/* --------------------------------------------------------------
         js/libs/jquery-1.11.0.js
   -------------------------------------------------------------- */
/*!
 * jQuery JavaScript Library v1.11.0
 * http://jquery.com/
 *
 * Includes Sizzle.js
 * http://sizzlejs.com/
 *
 * Copyright 2005, 2014 jQuery Foundation, Inc. and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2014-01-23T21:02Z
 */

(function( global, factory ) {

	if ( typeof module === "object" && typeof module.exports === "object" ) {
		// For CommonJS and CommonJS-like environments where a proper window is present,
		// execute the factory and get jQuery
		// For environments that do not inherently posses a window with a document
		// (such as Node.js), expose a jQuery-making factory as module.exports
		// This accentuates the need for the creation of a real window
		// e.g. var jQuery = require("jquery")(window);
		// See ticket #14549 for more info
		module.exports = global.document ?
			factory( global, true ) :
			function( w ) {
				if ( !w.document ) {
					throw new Error( "jQuery requires a window with a document" );
				}
				return factory( w );
			};
	} else {
		factory( global );
	}

// Pass this if window is not defined yet
}(typeof window !== "undefined" ? window : this, function( window, noGlobal ) {

// Can't do this because several apps including ASP.NET trace
// the stack via arguments.caller.callee and Firefox dies if
// you try to trace through "use strict" call chains. (#13335)
// Support: Firefox 18+
//

var deletedIds = [];

var slice = deletedIds.slice;

var concat = deletedIds.concat;

var push = deletedIds.push;

var indexOf = deletedIds.indexOf;

var class2type = {};

var toString = class2type.toString;

var hasOwn = class2type.hasOwnProperty;

var trim = "".trim;

var support = {};



var
	version = "1.11.0",

	// Define a local copy of jQuery
	jQuery = function( selector, context ) {
		// The jQuery object is actually just the init constructor 'enhanced'
		// Need init if jQuery is called (just allow error to be thrown if not included)
		return new jQuery.fn.init( selector, context );
	},

	// Make sure we trim BOM and NBSP (here's looking at you, Safari 5.0 and IE)
	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,

	// Matches dashed string for camelizing
	rmsPrefix = /^-ms-/,
	rdashAlpha = /-([\da-z])/gi,

	// Used by jQuery.camelCase as callback to replace()
	fcamelCase = function( all, letter ) {
		return letter.toUpperCase();
	};

jQuery.fn = jQuery.prototype = {
	// The current version of jQuery being used
	jquery: version,

	constructor: jQuery,

	// Start with an empty selector
	selector: "",

	// The default length of a jQuery object is 0
	length: 0,

	toArray: function() {
		return slice.call( this );
	},

	// Get the Nth element in the matched element set OR
	// Get the whole matched element set as a clean array
	get: function( num ) {
		return num != null ?

			// Return a 'clean' array
			( num < 0 ? this[ num + this.length ] : this[ num ] ) :

			// Return just the object
			slice.call( this );
	},

	// Take an array of elements and push it onto the stack
	// (returning the new matched element set)
	pushStack: function( elems ) {

		// Build a new jQuery matched element set
		var ret = jQuery.merge( this.constructor(), elems );

		// Add the old object onto the stack (as a reference)
		ret.prevObject = this;
		ret.context = this.context;

		// Return the newly-formed element set
		return ret;
	},

	// Execute a callback for every element in the matched set.
	// (You can seed the arguments with an array of args, but this is
	// only used internally.)
	each: function( callback, args ) {
		return jQuery.each( this, callback, args );
	},

	map: function( callback ) {
		return this.pushStack( jQuery.map(this, function( elem, i ) {
			return callback.call( elem, i, elem );
		}));
	},

	slice: function() {
		return this.pushStack( slice.apply( this, arguments ) );
	},

	first: function() {
		return this.eq( 0 );
	},

	last: function() {
		return this.eq( -1 );
	},

	eq: function( i ) {
		var len = this.length,
			j = +i + ( i < 0 ? len : 0 );
		return this.pushStack( j >= 0 && j < len ? [ this[j] ] : [] );
	},

	end: function() {
		return this.prevObject || this.constructor(null);
	},

	// For internal use only.
	// Behaves like an Array's method, not like a jQuery method.
	push: push,
	sort: deletedIds.sort,
	splice: deletedIds.splice
};

jQuery.extend = jQuery.fn.extend = function() {
	var src, copyIsArray, copy, name, options, clone,
		target = arguments[0] || {},
		i = 1,
		length = arguments.length,
		deep = false;

	// Handle a deep copy situation
	if ( typeof target === "boolean" ) {
		deep = target;

		// skip the boolean and the target
		target = arguments[ i ] || {};
		i++;
	}

	// Handle case when target is a string or something (possible in deep copy)
	if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
		target = {};
	}

	// extend jQuery itself if only one argument is passed
	if ( i === length ) {
		target = this;
		i--;
	}

	for ( ; i < length; i++ ) {
		// Only deal with non-null/undefined values
		if ( (options = arguments[ i ]) != null ) {
			// Extend the base object
			for ( name in options ) {
				src = target[ name ];
				copy = options[ name ];

				// Prevent never-ending loop
				if ( target === copy ) {
					continue;
				}

				// Recurse if we're merging plain objects or arrays
				if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
					if ( copyIsArray ) {
						copyIsArray = false;
						clone = src && jQuery.isArray(src) ? src : [];

					} else {
						clone = src && jQuery.isPlainObject(src) ? src : {};
					}

					// Never move original objects, clone them
					target[ name ] = jQuery.extend( deep, clone, copy );

				// Don't bring in undefined values
				} else if ( copy !== undefined ) {
					target[ name ] = copy;
				}
			}
		}
	}

	// Return the modified object
	return target;
};

jQuery.extend({
	// Unique for each copy of jQuery on the page
	expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),

	// Assume jQuery is ready without the ready module
	isReady: true,

	error: function( msg ) {
		throw new Error( msg );
	},

	noop: function() {},

	// See test/unit/core.js for details concerning isFunction.
	// Since version 1.3, DOM methods and functions like alert
	// aren't supported. They return false on IE (#2968).
	isFunction: function( obj ) {
		return jQuery.type(obj) === "function";
	},

	isArray: Array.isArray || function( obj ) {
		return jQuery.type(obj) === "array";
	},

	isWindow: function( obj ) {
		/* jshint eqeqeq: false */
		return obj != null && obj == obj.window;
	},

	isNumeric: function( obj ) {
		// parseFloat NaNs numeric-cast false positives (null|true|false|"")
		// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
		// subtraction forces infinities to NaN
		return obj - parseFloat( obj ) >= 0;
	},

	isEmptyObject: function( obj ) {
		var name;
		for ( name in obj ) {
			return false;
		}
		return true;
	},

	isPlainObject: function( obj ) {
		var key;

		// Must be an Object.
		// Because of IE, we also have to check the presence of the constructor property.
		// Make sure that DOM nodes and window objects don't pass through, as well
		if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
			return false;
		}

		try {
			// Not own constructor property must be Object
			if ( obj.constructor &&
				!hasOwn.call(obj, "constructor") &&
				!hasOwn.call(obj.constructor.prototype, "isPrototypeOf") ) {
				return false;
			}
		} catch ( e ) {
			// IE8,9 Will throw exceptions on certain host objects #9897
			return false;
		}

		// Support: IE<9
		// Handle iteration over inherited properties before own properties.
		if ( support.ownLast ) {
			for ( key in obj ) {
				return hasOwn.call( obj, key );
			}
		}

		// Own properties are enumerated firstly, so to speed up,
		// if last one is own, then all properties are own.
		for ( key in obj ) {}

		return key === undefined || hasOwn.call( obj, key );
	},

	type: function( obj ) {
		if ( obj == null ) {
			return obj + "";
		}
		return typeof obj === "object" || typeof obj === "function" ?
			class2type[ toString.call(obj) ] || "object" :
			typeof obj;
	},

	// Evaluates a script in a global context
	// Workarounds based on findings by Jim Driscoll
	// http://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context
	globalEval: function( data ) {
		if ( data && jQuery.trim( data ) ) {
			// We use execScript on Internet Explorer
			// We use an anonymous function so that context is window
			// rather than jQuery in Firefox
			( window.execScript || function( data ) {
				window[ "eval" ].call( window, data );
			} )( data );
		}
	},

	// Convert dashed to camelCase; used by the css and data modules
	// Microsoft forgot to hump their vendor prefix (#9572)
	camelCase: function( string ) {
		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
	},

	nodeName: function( elem, name ) {
		return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
	},

	// args is for internal usage only
	each: function( obj, callback, args ) {
		var value,
			i = 0,
			length = obj.length,
			isArray = isArraylike( obj );

		if ( args ) {
			if ( isArray ) {
				for ( ; i < length; i++ ) {
					value = callback.apply( obj[ i ], args );

					if ( value === false ) {
						break;
					}
				}
			} else {
				for ( i in obj ) {
					value = callback.apply( obj[ i ], args );

					if ( value === false ) {
						break;
					}
				}
			}

		// A special, fast, case for the most common use of each
		} else {
			if ( isArray ) {
				for ( ; i < length; i++ ) {
					value = callback.call( obj[ i ], i, obj[ i ] );

					if ( value === false ) {
						break;
					}
				}
			} else {
				for ( i in obj ) {
					value = callback.call( obj[ i ], i, obj[ i ] );

					if ( value === false ) {
						break;
					}
				}
			}
		}

		return obj;
	},

	// Use native String.trim function wherever possible
	trim: trim && !trim.call("\uFEFF\xA0") ?
		function( text ) {
			return text == null ?
				"" :
				trim.call( text );
		} :

		// Otherwise use our own trimming functionality
		function( text ) {
			return text == null ?
				"" :
				( text + "" ).replace( rtrim, "" );
		},

	// results is for internal usage only
	makeArray: function( arr, results ) {
		var ret = results || [];

		if ( arr != null ) {
			if ( isArraylike( Object(arr) ) ) {
				jQuery.merge( ret,
					typeof arr === "string" ?
					[ arr ] : arr
				);
			} else {
				push.call( ret, arr );
			}
		}

		return ret;
	},

	inArray: function( elem, arr, i ) {
		var len;

		if ( arr ) {
			if ( indexOf ) {
				return indexOf.call( arr, elem, i );
			}

			len = arr.length;
			i = i ? i < 0 ? Math.max( 0, len + i ) : i : 0;

			for ( ; i < len; i++ ) {
				// Skip accessing in sparse arrays
				if ( i in arr && arr[ i ] === elem ) {
					return i;
				}
			}
		}

		return -1;
	},

	merge: function( first, second ) {
		var len = +second.length,
			j = 0,
			i = first.length;

		while ( j < len ) {
			first[ i++ ] = second[ j++ ];
		}

		// Support: IE<9
		// Workaround casting of .length to NaN on otherwise arraylike objects (e.g., NodeLists)
		if ( len !== len ) {
			while ( second[j] !== undefined ) {
				first[ i++ ] = second[ j++ ];
			}
		}

		first.length = i;

		return first;
	},

	grep: function( elems, callback, invert ) {
		var callbackInverse,
			matches = [],
			i = 0,
			length = elems.length,
			callbackExpect = !invert;

		// Go through the array, only saving the items
		// that pass the validator function
		for ( ; i < length; i++ ) {
			callbackInverse = !callback( elems[ i ], i );
			if ( callbackInverse !== callbackExpect ) {
				matches.push( elems[ i ] );
			}
		}

		return matches;
	},

	// arg is for internal usage only
	map: function( elems, callback, arg ) {
		var value,
			i = 0,
			length = elems.length,
			isArray = isArraylike( elems ),
			ret = [];

		// Go through the array, translating each of the items to their new values
		if ( isArray ) {
			for ( ; i < length; i++ ) {
				value = callback( elems[ i ], i, arg );

				if ( value != null ) {
					ret.push( value );
				}
			}

		// Go through every key on the object,
		} else {
			for ( i in elems ) {
				value = callback( elems[ i ], i, arg );

				if ( value != null ) {
					ret.push( value );
				}
			}
		}

		// Flatten any nested arrays
		return concat.apply( [], ret );
	},

	// A global GUID counter for objects
	guid: 1,

	// Bind a function to a context, optionally partially applying any
	// arguments.
	proxy: function( fn, context ) {
		var args, proxy, tmp;

		if ( typeof context === "string" ) {
			tmp = fn[ context ];
			context = fn;
			fn = tmp;
		}

		// Quick check to determine if target is callable, in the spec
		// this throws a TypeError, but we will just return undefined.
		if ( !jQuery.isFunction( fn ) ) {
			return undefined;
		}

		// Simulated bind
		args = slice.call( arguments, 2 );
		proxy = function() {
			return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
		};

		// Set the guid of unique handler to the same of original handler, so it can be removed
		proxy.guid = fn.guid = fn.guid || jQuery.guid++;

		return proxy;
	},

	now: function() {
		return +( new Date() );
	},

	// jQuery.support is not used in Core but other projects attach their
	// properties to it so it needs to exist.
	support: support
});

// Populate the class2type map
jQuery.each("Boolean Number String Function Array Date RegExp Object Error".split(" "), function(i, name) {
	class2type[ "[object " + name + "]" ] = name.toLowerCase();
});

function isArraylike( obj ) {
	var length = obj.length,
		type = jQuery.type( obj );

	if ( type === "function" || jQuery.isWindow( obj ) ) {
		return false;
	}

	if ( obj.nodeType === 1 && length ) {
		return true;
	}

	return type === "array" || length === 0 ||
		typeof length === "number" && length > 0 && ( length - 1 ) in obj;
}
var Sizzle =
/*!
 * Sizzle CSS Selector Engine v1.10.16
 * http://sizzlejs.com/
 *
 * Copyright 2013 jQuery Foundation, Inc. and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2014-01-13
 */
(function( window ) {

var i,
	support,
	Expr,
	getText,
	isXML,
	compile,
	outermostContext,
	sortInput,
	hasDuplicate,

	// Local document vars
	setDocument,
	document,
	docElem,
	documentIsHTML,
	rbuggyQSA,
	rbuggyMatches,
	matches,
	contains,

	// Instance-specific data
	expando = "sizzle" + -(new Date()),
	preferredDoc = window.document,
	dirruns = 0,
	done = 0,
	classCache = createCache(),
	tokenCache = createCache(),
	compilerCache = createCache(),
	sortOrder = function( a, b ) {
		if ( a === b ) {
			hasDuplicate = true;
		}
		return 0;
	},

	// General-purpose constants
	strundefined = typeof undefined,
	MAX_NEGATIVE = 1 << 31,

	// Instance methods
	hasOwn = ({}).hasOwnProperty,
	arr = [],
	pop = arr.pop,
	push_native = arr.push,
	push = arr.push,
	slice = arr.slice,
	// Use a stripped-down indexOf if we can't use a native one
	indexOf = arr.indexOf || function( elem ) {
		var i = 0,
			len = this.length;
		for ( ; i < len; i++ ) {
			if ( this[i] === elem ) {
				return i;
			}
		}
		return -1;
	},

	booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",

	// Regular expressions

	// Whitespace characters http://www.w3.org/TR/css3-selectors/#whitespace
	whitespace = "[\\x20\\t\\r\\n\\f]",
	// http://www.w3.org/TR/css3-syntax/#characters
	characterEncoding = "(?:\\\\.|[\\w-]|[^\\x00-\\xa0])+",

	// Loosely modeled on CSS identifier characters
	// An unquoted value should be a CSS identifier http://www.w3.org/TR/css3-selectors/#attribute-selectors
	// Proper syntax: http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
	identifier = characterEncoding.replace( "w", "w#" ),

	// Acceptable operators http://www.w3.org/TR/selectors/#attribute-selectors
	attributes = "\\[" + whitespace + "*(" + characterEncoding + ")" + whitespace +
		"*(?:([*^$|!~]?=)" + whitespace + "*(?:(['\"])((?:\\\\.|[^\\\\])*?)\\3|(" + identifier + ")|)|)" + whitespace + "*\\]",

	// Prefer arguments quoted,
	//   then not containing pseudos/brackets,
	//   then attribute selectors/non-parenthetical expressions,
	//   then anything else
	// These preferences are here to reduce the number of selectors
	//   needing tokenize in the PSEUDO preFilter
	pseudos = ":(" + characterEncoding + ")(?:\\(((['\"])((?:\\\\.|[^\\\\])*?)\\3|((?:\\\\.|[^\\\\()[\\]]|" + attributes.replace( 3, 8 ) + ")*)|.*)\\)|)",

	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),

	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
	rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),

	rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ),

	rpseudo = new RegExp( pseudos ),
	ridentifier = new RegExp( "^" + identifier + "$" ),

	matchExpr = {
		"ID": new RegExp( "^#(" + characterEncoding + ")" ),
		"CLASS": new RegExp( "^\\.(" + characterEncoding + ")" ),
		"TAG": new RegExp( "^(" + characterEncoding.replace( "w", "w*" ) + ")" ),
		"ATTR": new RegExp( "^" + attributes ),
		"PSEUDO": new RegExp( "^" + pseudos ),
		"CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
		"bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
		// For use in libraries implementing .is()
		// We use this for POS matching in `select`
		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
			whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
	},

	rinputs = /^(?:input|select|textarea|button)$/i,
	rheader = /^h\d$/i,

	rnative = /^[^{]+\{\s*\[native \w/,

	// Easily-parseable/retrievable ID or TAG or CLASS selectors
	rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,

	rsibling = /[+~]/,
	rescape = /'|\\/g,

	// CSS escapes http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
	runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
	funescape = function( _, escaped, escapedWhitespace ) {
		var high = "0x" + escaped - 0x10000;
		// NaN means non-codepoint
		// Support: Firefox
		// Workaround erroneous numeric interpretation of +"0x"
		return high !== high || escapedWhitespace ?
			escaped :
			high < 0 ?
				// BMP codepoint
				String.fromCharCode( high + 0x10000 ) :
				// Supplemental Plane codepoint (surrogate pair)
				String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
	};

// Optimize for push.apply( _, NodeList )
try {
	push.apply(
		(arr = slice.call( preferredDoc.childNodes )),
		preferredDoc.childNodes
	);
	// Support: Android<4.0
	// Detect silently failing push.apply
	arr[ preferredDoc.childNodes.length ].nodeType;
} catch ( e ) {
	push = { apply: arr.length ?

		// Leverage slice if possible
		function( target, els ) {
			push_native.apply( target, slice.call(els) );
		} :

		// Support: IE<9
		// Otherwise append directly
		function( target, els ) {
			var j = target.length,
				i = 0;
			// Can't trust NodeList.length
			while ( (target[j++] = els[i++]) ) {}
			target.length = j - 1;
		}
	};
}

function Sizzle( selector, context, results, seed ) {
	var match, elem, m, nodeType,
		// QSA vars
		i, groups, old, nid, newContext, newSelector;

	if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) {
		setDocument( context );
	}

	context = context || document;
	results = results || [];

	if ( !selector || typeof selector !== "string" ) {
		return results;
	}

	if ( (nodeType = context.nodeType) !== 1 && nodeType !== 9 ) {
		return [];
	}

	if ( documentIsHTML && !seed ) {

		// Shortcuts
		if ( (match = rquickExpr.exec( selector )) ) {
			// Speed-up: Sizzle("#ID")
			if ( (m = match[1]) ) {
				if ( nodeType === 9 ) {
					elem = context.getElementById( m );
					// Check parentNode to catch when Blackberry 4.6 returns
					// nodes that are no longer in the document (jQuery #6963)
					if ( elem && elem.parentNode ) {
						// Handle the case where IE, Opera, and Webkit return items
						// by name instead of ID
						if ( elem.id === m ) {
							results.push( elem );
							return results;
						}
					} else {
						return results;
					}
				} else {
					// Context is not a document
					if ( context.ownerDocument && (elem = context.ownerDocument.getElementById( m )) &&
						contains( context, elem ) && elem.id === m ) {
						results.push( elem );
						return results;
					}
				}

			// Speed-up: Sizzle("TAG")
			} else if ( match[2] ) {
				push.apply( results, context.getElementsByTagName( selector ) );
				return results;

			// Speed-up: Sizzle(".CLASS")
			} else if ( (m = match[3]) && support.getElementsByClassName && context.getElementsByClassName ) {
				push.apply( results, context.getElementsByClassName( m ) );
				return results;
			}
		}

		// QSA path
		if ( support.qsa && (!rbuggyQSA || !rbuggyQSA.test( selector )) ) {
			nid = old = expando;
			newContext = context;
			newSelector = nodeType === 9 && selector;

			// qSA works strangely on Element-rooted queries
			// We can work around this by specifying an extra ID on the root
			// and working up from there (Thanks to Andrew Dupont for the technique)
			// IE 8 doesn't work on object elements
			if ( nodeType === 1 && context.nodeName.toLowerCase() !== "object" ) {
				groups = tokenize( selector );

				if ( (old = context.getAttribute("id")) ) {
					nid = old.replace( rescape, "\\$&" );
				} else {
					context.setAttribute( "id", nid );
				}
				nid = "[id='" + nid + "'] ";

				i = groups.length;
				while ( i-- ) {
					groups[i] = nid + toSelector( groups[i] );
				}
				newContext = rsibling.test( selector ) && testContext( context.parentNode ) || context;
				newSelector = groups.join(",");
			}

			if ( newSelector ) {
				try {
					push.apply( results,
						newContext.querySelectorAll( newSelector )
					);
					return results;
				} catch(qsaError) {
				} finally {
					if ( !old ) {
						context.removeAttribute("id");
					}
				}
			}
		}
	}

	// All others
	return select( selector.replace( rtrim, "$1" ), context, results, seed );
}

/**
 * Create key-value caches of limited size
 * @returns {Function(string, Object)} Returns the Object data after storing it on itself with
 *	property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
 *	deleting the oldest entry
 */
function createCache() {
	var keys = [];

	function cache( key, value ) {
		// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
		if ( keys.push( key + " " ) > Expr.cacheLength ) {
			// Only keep the most recent entries
			delete cache[ keys.shift() ];
		}
		return (cache[ key + " " ] = value);
	}
	return cache;
}

/**
 * Mark a function for special use by Sizzle
 * @param {Function} fn The function to mark
 */
function markFunction( fn ) {
	fn[ expando ] = true;
	return fn;
}

/**
 * Support testing using an element
 * @param {Function} fn Passed the created div and expects a boolean result
 */
function assert( fn ) {
	var div = document.createElement("div");

	try {
		return !!fn( div );
	} catch (e) {
		return false;
	} finally {
		// Remove from its parent by default
		if ( div.parentNode ) {
			div.parentNode.removeChild( div );
		}
		// release memory in IE
		div = null;
	}
}

/**
 * Adds the same handler for all of the specified attrs
 * @param {String} attrs Pipe-separated list of attributes
 * @param {Function} handler The method that will be applied
 */
function addHandle( attrs, handler ) {
	var arr = attrs.split("|"),
		i = attrs.length;

	while ( i-- ) {
		Expr.attrHandle[ arr[i] ] = handler;
	}
}

/**
 * Checks document order of two siblings
 * @param {Element} a
 * @param {Element} b
 * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
 */
function siblingCheck( a, b ) {
	var cur = b && a,
		diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
			( ~b.sourceIndex || MAX_NEGATIVE ) -
			( ~a.sourceIndex || MAX_NEGATIVE );

	// Use IE sourceIndex if available on both nodes
	if ( diff ) {
		return diff;
	}

	// Check if b follows a
	if ( cur ) {
		while ( (cur = cur.nextSibling) ) {
			if ( cur === b ) {
				return -1;
			}
		}
	}

	return a ? 1 : -1;
}

/**
 * Returns a function to use in pseudos for input types
 * @param {String} type
 */
function createInputPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return name === "input" && elem.type === type;
	};
}

/**
 * Returns a function to use in pseudos for buttons
 * @param {String} type
 */
function createButtonPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return (name === "input" || name === "button") && elem.type === type;
	};
}

/**
 * Returns a function to use in pseudos for positionals
 * @param {Function} fn
 */
function createPositionalPseudo( fn ) {
	return markFunction(function( argument ) {
		argument = +argument;
		return markFunction(function( seed, matches ) {
			var j,
				matchIndexes = fn( [], seed.length, argument ),
				i = matchIndexes.length;

			// Match elements found at the specified indexes
			while ( i-- ) {
				if ( seed[ (j = matchIndexes[i]) ] ) {
					seed[j] = !(matches[j] = seed[j]);
				}
			}
		});
	});
}

/**
 * Checks a node for validity as a Sizzle context
 * @param {Element|Object=} context
 * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
 */
function testContext( context ) {
	return context && typeof context.getElementsByTagName !== strundefined && context;
}

// Expose support vars for convenience
support = Sizzle.support = {};

/**
 * Detects XML nodes
 * @param {Element|Object} elem An element or a document
 * @returns {Boolean} True iff elem is a non-HTML XML node
 */
isXML = Sizzle.isXML = function( elem ) {
	// documentElement is verified for cases where it doesn't yet exist
	// (such as loading iframes in IE - #4833)
	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
	return documentElement ? documentElement.nodeName !== "HTML" : false;
};

/**
 * Sets document-related variables once based on the current document
 * @param {Element|Object} [doc] An element or document object to use to set the document
 * @returns {Object} Returns the current document
 */
setDocument = Sizzle.setDocument = function( node ) {
	var hasCompare,
		doc = node ? node.ownerDocument || node : preferredDoc,
		parent = doc.defaultView;

	// If no document and documentElement is available, return
	if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) {
		return document;
	}

	// Set our document
	document = doc;
	docElem = doc.documentElement;

	// Support tests
	documentIsHTML = !isXML( doc );

	// Support: IE>8
	// If iframe document is assigned to "document" variable and if iframe has been reloaded,
	// IE will throw "permission denied" error when accessing "document" variable, see jQuery #13936
	// IE6-8 do not support the defaultView property so parent will be undefined
	if ( parent && parent !== parent.top ) {
		// IE11 does not have attachEvent, so all must suffer
		if ( parent.addEventListener ) {
			parent.addEventListener( "unload", function() {
				setDocument();
			}, false );
		} else if ( parent.attachEvent ) {
			parent.attachEvent( "onunload", function() {
				setDocument();
			});
		}
	}

	/* Attributes
	---------------------------------------------------------------------- */

	// Support: IE<8
	// Verify that getAttribute really returns attributes and not properties (excepting IE8 booleans)
	support.attributes = assert(function( div ) {
		div.className = "i";
		return !div.getAttribute("className");
	});

	/* getElement(s)By*
	---------------------------------------------------------------------- */

	// Check if getElementsByTagName("*") returns only elements
	support.getElementsByTagName = assert(function( div ) {
		div.appendChild( doc.createComment("") );
		return !div.getElementsByTagName("*").length;
	});

	// Check if getElementsByClassName can be trusted
	support.getElementsByClassName = rnative.test( doc.getElementsByClassName ) && assert(function( div ) {
		div.innerHTML = "<div class='a'></div><div class='a i'></div>";

		// Support: Safari<4
		// Catch class over-caching
		div.firstChild.className = "i";
		// Support: Opera<10
		// Catch gEBCN failure to find non-leading classes
		return div.getElementsByClassName("i").length === 2;
	});

	// Support: IE<10
	// Check if getElementById returns elements by name
	// The broken getElementById methods don't pick up programatically-set names,
	// so use a roundabout getElementsByName test
	support.getById = assert(function( div ) {
		docElem.appendChild( div ).id = expando;
		return !doc.getElementsByName || !doc.getElementsByName( expando ).length;
	});

	// ID find and filter
	if ( support.getById ) {
		Expr.find["ID"] = function( id, context ) {
			if ( typeof context.getElementById !== strundefined && documentIsHTML ) {
				var m = context.getElementById( id );
				// Check parentNode to catch when Blackberry 4.6 returns
				// nodes that are no longer in the document #6963
				return m && m.parentNode ? [m] : [];
			}
		};
		Expr.filter["ID"] = function( id ) {
			var attrId = id.replace( runescape, funescape );
			return function( elem ) {
				return elem.getAttribute("id") === attrId;
			};
		};
	} else {
		// Support: IE6/7
		// getElementById is not reliable as a find shortcut
		delete Expr.find["ID"];

		Expr.filter["ID"] =  function( id ) {
			var attrId = id.replace( runescape, funescape );
			return function( elem ) {
				var node = typeof elem.getAttributeNode !== strundefined && elem.getAttributeNode("id");
				return node && node.value === attrId;
			};
		};
	}

	// Tag
	Expr.find["TAG"] = support.getElementsByTagName ?
		function( tag, context ) {
			if ( typeof context.getElementsByTagName !== strundefined ) {
				return context.getElementsByTagName( tag );
			}
		} :
		function( tag, context ) {
			var elem,
				tmp = [],
				i = 0,
				results = context.getElementsByTagName( tag );

			// Filter out possible comments
			if ( tag === "*" ) {
				while ( (elem = results[i++]) ) {
					if ( elem.nodeType === 1 ) {
						tmp.push( elem );
					}
				}

				return tmp;
			}
			return results;
		};

	// Class
	Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) {
		if ( typeof context.getElementsByClassName !== strundefined && documentIsHTML ) {
			return context.getElementsByClassName( className );
		}
	};

	/* QSA/matchesSelector
	---------------------------------------------------------------------- */

	// QSA and matchesSelector support

	// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
	rbuggyMatches = [];

	// qSa(:focus) reports false when true (Chrome 21)
	// We allow this because of a bug in IE8/9 that throws an error
	// whenever `document.activeElement` is accessed on an iframe
	// So, we allow :focus to pass through QSA all the time to avoid the IE error
	// See http://bugs.jquery.com/ticket/13378
	rbuggyQSA = [];

	if ( (support.qsa = rnative.test( doc.querySelectorAll )) ) {
		// Build QSA regex
		// Regex strategy adopted from Diego Perini
		assert(function( div ) {
			// Select is set to empty string on purpose
			// This is to test IE's treatment of not explicitly
			// setting a boolean content attribute,
			// since its presence should be enough
			// http://bugs.jquery.com/ticket/12359
			div.innerHTML = "<select t=''><option selected=''></option></select>";

			// Support: IE8, Opera 10-12
			// Nothing should be selected when empty strings follow ^= or $= or *=
			if ( div.querySelectorAll("[t^='']").length ) {
				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
			}

			// Support: IE8
			// Boolean attributes and "value" are not treated correctly
			if ( !div.querySelectorAll("[selected]").length ) {
				rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
			}

			// Webkit/Opera - :checked should return selected option elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			// IE8 throws error here and will not see later tests
			if ( !div.querySelectorAll(":checked").length ) {
				rbuggyQSA.push(":checked");
			}
		});

		assert(function( div ) {
			// Support: Windows 8 Native Apps
			// The type and name attributes are restricted during .innerHTML assignment
			var input = doc.createElement("input");
			input.setAttribute( "type", "hidden" );
			div.appendChild( input ).setAttribute( "name", "D" );

			// Support: IE8
			// Enforce case-sensitivity of name attribute
			if ( div.querySelectorAll("[name=d]").length ) {
				rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" );
			}

			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
			// IE8 throws error here and will not see later tests
			if ( !div.querySelectorAll(":enabled").length ) {
				rbuggyQSA.push( ":enabled", ":disabled" );
			}

			// Opera 10-11 does not throw on post-comma invalid pseudos
			div.querySelectorAll("*,:x");
			rbuggyQSA.push(",.*:");
		});
	}

	if ( (support.matchesSelector = rnative.test( (matches = docElem.webkitMatchesSelector ||
		docElem.mozMatchesSelector ||
		docElem.oMatchesSelector ||
		docElem.msMatchesSelector) )) ) {

		assert(function( div ) {
			// Check to see if it's possible to do matchesSelector
			// on a disconnected node (IE 9)
			support.disconnectedMatch = matches.call( div, "div" );

			// This should fail with an exception
			// Gecko does not error, returns false instead
			matches.call( div, "[s!='']:x" );
			rbuggyMatches.push( "!=", pseudos );
		});
	}

	rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") );
	rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") );

	/* Contains
	---------------------------------------------------------------------- */
	hasCompare = rnative.test( docElem.compareDocumentPosition );

	// Element contains another
	// Purposefully does not implement inclusive descendent
	// As in, an element does not contain itself
	contains = hasCompare || rnative.test( docElem.contains ) ?
		function( a, b ) {
			var adown = a.nodeType === 9 ? a.documentElement : a,
				bup = b && b.parentNode;
			return a === bup || !!( bup && bup.nodeType === 1 && (
				adown.contains ?
					adown.contains( bup ) :
					a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
			));
		} :
		function( a, b ) {
			if ( b ) {
				while ( (b = b.parentNode) ) {
					if ( b === a ) {
						return true;
					}
				}
			}
			return false;
		};

	/* Sorting
	---------------------------------------------------------------------- */

	// Document order sorting
	sortOrder = hasCompare ?
	function( a, b ) {

		// Flag for duplicate removal
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		// Sort on method existence if only one input has compareDocumentPosition
		var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
		if ( compare ) {
			return compare;
		}

		// Calculate position if both inputs belong to the same document
		compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ?
			a.compareDocumentPosition( b ) :

			// Otherwise we know they are disconnected
			1;

		// Disconnected nodes
		if ( compare & 1 ||
			(!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) {

			// Choose the first element that is related to our preferred document
			if ( a === doc || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) {
				return -1;
			}
			if ( b === doc || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) {
				return 1;
			}

			// Maintain original order
			return sortInput ?
				( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :
				0;
		}

		return compare & 4 ? -1 : 1;
	} :
	function( a, b ) {
		// Exit early if the nodes are identical
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		var cur,
			i = 0,
			aup = a.parentNode,
			bup = b.parentNode,
			ap = [ a ],
			bp = [ b ];

		// Parentless nodes are either documents or disconnected
		if ( !aup || !bup ) {
			return a === doc ? -1 :
				b === doc ? 1 :
				aup ? -1 :
				bup ? 1 :
				sortInput ?
				( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :
				0;

		// If the nodes are siblings, we can do a quick check
		} else if ( aup === bup ) {
			return siblingCheck( a, b );
		}

		// Otherwise we need full lists of their ancestors for comparison
		cur = a;
		while ( (cur = cur.parentNode) ) {
			ap.unshift( cur );
		}
		cur = b;
		while ( (cur = cur.parentNode) ) {
			bp.unshift( cur );
		}

		// Walk down the tree looking for a discrepancy
		while ( ap[i] === bp[i] ) {
			i++;
		}

		return i ?
			// Do a sibling check if the nodes have a common ancestor
			siblingCheck( ap[i], bp[i] ) :

			// Otherwise nodes in our document sort first
			ap[i] === preferredDoc ? -1 :
			bp[i] === preferredDoc ? 1 :
			0;
	};

	return doc;
};

Sizzle.matches = function( expr, elements ) {
	return Sizzle( expr, null, null, elements );
};

Sizzle.matchesSelector = function( elem, expr ) {
	// Set document vars if needed
	if ( ( elem.ownerDocument || elem ) !== document ) {
		setDocument( elem );
	}

	// Make sure that attribute selectors are quoted
	expr = expr.replace( rattributeQuotes, "='$1']" );

	if ( support.matchesSelector && documentIsHTML &&
		( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
		( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {

		try {
			var ret = matches.call( elem, expr );

			// IE 9's matchesSelector returns false on disconnected nodes
			if ( ret || support.disconnectedMatch ||
					// As well, disconnected nodes are said to be in a document
					// fragment in IE 9
					elem.document && elem.document.nodeType !== 11 ) {
				return ret;
			}
		} catch(e) {}
	}

	return Sizzle( expr, document, null, [elem] ).length > 0;
};

Sizzle.contains = function( context, elem ) {
	// Set document vars if needed
	if ( ( context.ownerDocument || context ) !== document ) {
		setDocument( context );
	}
	return contains( context, elem );
};

Sizzle.attr = function( elem, name ) {
	// Set document vars if needed
	if ( ( elem.ownerDocument || elem ) !== document ) {
		setDocument( elem );
	}

	var fn = Expr.attrHandle[ name.toLowerCase() ],
		// Don't get fooled by Object.prototype properties (jQuery #13807)
		val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
			fn( elem, name, !documentIsHTML ) :
			undefined;

	return val !== undefined ?
		val :
		support.attributes || !documentIsHTML ?
			elem.getAttribute( name ) :
			(val = elem.getAttributeNode(name)) && val.specified ?
				val.value :
				null;
};

Sizzle.error = function( msg ) {
	throw new Error( "Syntax error, unrecognized expression: " + msg );
};

/**
 * Document sorting and removing duplicates
 * @param {ArrayLike} results
 */
Sizzle.uniqueSort = function( results ) {
	var elem,
		duplicates = [],
		j = 0,
		i = 0;

	// Unless we *know* we can detect duplicates, assume their presence
	hasDuplicate = !support.detectDuplicates;
	sortInput = !support.sortStable && results.slice( 0 );
	results.sort( sortOrder );

	if ( hasDuplicate ) {
		while ( (elem = results[i++]) ) {
			if ( elem === results[ i ] ) {
				j = duplicates.push( i );
			}
		}
		while ( j-- ) {
			results.splice( duplicates[ j ], 1 );
		}
	}

	// Clear input after sorting to release objects
	// See https://github.com/jquery/sizzle/pull/225
	sortInput = null;

	return results;
};

/**
 * Utility function for retrieving the text value of an array of DOM nodes
 * @param {Array|Element} elem
 */
getText = Sizzle.getText = function( elem ) {
	var node,
		ret = "",
		i = 0,
		nodeType = elem.nodeType;

	if ( !nodeType ) {
		// If no nodeType, this is expected to be an array
		while ( (node = elem[i++]) ) {
			// Do not traverse comment nodes
			ret += getText( node );
		}
	} else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
		// Use textContent for elements
		// innerText usage removed for consistency of new lines (jQuery #11153)
		if ( typeof elem.textContent === "string" ) {
			return elem.textContent;
		} else {
			// Traverse its children
			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
				ret += getText( elem );
			}
		}
	} else if ( nodeType === 3 || nodeType === 4 ) {
		return elem.nodeValue;
	}
	// Do not include comment or processing instruction nodes

	return ret;
};

Expr = Sizzle.selectors = {

	// Can be adjusted by the user
	cacheLength: 50,

	createPseudo: markFunction,

	match: matchExpr,

	attrHandle: {},

	find: {},

	relative: {
		">": { dir: "parentNode", first: true },
		" ": { dir: "parentNode" },
		"+": { dir: "previousSibling", first: true },
		"~": { dir: "previousSibling" }
	},

	preFilter: {
		"ATTR": function( match ) {
			match[1] = match[1].replace( runescape, funescape );

			// Move the given value to match[3] whether quoted or unquoted
			match[3] = ( match[4] || match[5] || "" ).replace( runescape, funescape );

			if ( match[2] === "~=" ) {
				match[3] = " " + match[3] + " ";
			}

			return match.slice( 0, 4 );
		},

		"CHILD": function( match ) {
			/* matches from matchExpr["CHILD"]
				1 type (only|nth|...)
				2 what (child|of-type)
				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
				4 xn-component of xn+y argument ([+-]?\d*n|)
				5 sign of xn-component
				6 x of xn-component
				7 sign of y-component
				8 y of y-component
			*/
			match[1] = match[1].toLowerCase();

			if ( match[1].slice( 0, 3 ) === "nth" ) {
				// nth-* requires argument
				if ( !match[3] ) {
					Sizzle.error( match[0] );
				}

				// numeric x and y parameters for Expr.filter.CHILD
				// remember that false/true cast respectively to 0/1
				match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) );
				match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" );

			// other types prohibit arguments
			} else if ( match[3] ) {
				Sizzle.error( match[0] );
			}

			return match;
		},

		"PSEUDO": function( match ) {
			var excess,
				unquoted = !match[5] && match[2];

			if ( matchExpr["CHILD"].test( match[0] ) ) {
				return null;
			}

			// Accept quoted arguments as-is
			if ( match[3] && match[4] !== undefined ) {
				match[2] = match[4];

			// Strip excess characters from unquoted arguments
			} else if ( unquoted && rpseudo.test( unquoted ) &&
				// Get excess from tokenize (recursively)
				(excess = tokenize( unquoted, true )) &&
				// advance to the next closing parenthesis
				(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {

				// excess is a negative index
				match[0] = match[0].slice( 0, excess );
				match[2] = unquoted.slice( 0, excess );
			}

			// Return only captures needed by the pseudo filter method (type and argument)
			return match.slice( 0, 3 );
		}
	},

	filter: {

		"TAG": function( nodeNameSelector ) {
			var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
			return nodeNameSelector === "*" ?
				function() { return true; } :
				function( elem ) {
					return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
				};
		},

		"CLASS": function( className ) {
			var pattern = classCache[ className + " " ];

			return pattern ||
				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
				classCache( className, function( elem ) {
					return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== strundefined && elem.getAttribute("class") || "" );
				});
		},

		"ATTR": function( name, operator, check ) {
			return function( elem ) {
				var result = Sizzle.attr( elem, name );

				if ( result == null ) {
					return operator === "!=";
				}
				if ( !operator ) {
					return true;
				}

				result += "";

				return operator === "=" ? result === check :
					operator === "!=" ? result !== check :
					operator === "^=" ? check && result.indexOf( check ) === 0 :
					operator === "*=" ? check && result.indexOf( check ) > -1 :
					operator === "$=" ? check && result.slice( -check.length ) === check :
					operator === "~=" ? ( " " + result + " " ).indexOf( check ) > -1 :
					operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
					false;
			};
		},

		"CHILD": function( type, what, argument, first, last ) {
			var simple = type.slice( 0, 3 ) !== "nth",
				forward = type.slice( -4 ) !== "last",
				ofType = what === "of-type";

			return first === 1 && last === 0 ?

				// Shortcut for :nth-*(n)
				function( elem ) {
					return !!elem.parentNode;
				} :

				function( elem, context, xml ) {
					var cache, outerCache, node, diff, nodeIndex, start,
						dir = simple !== forward ? "nextSibling" : "previousSibling",
						parent = elem.parentNode,
						name = ofType && elem.nodeName.toLowerCase(),
						useCache = !xml && !ofType;

					if ( parent ) {

						// :(first|last|only)-(child|of-type)
						if ( simple ) {
							while ( dir ) {
								node = elem;
								while ( (node = node[ dir ]) ) {
									if ( ofType ? node.nodeName.toLowerCase() === name : node.nodeType === 1 ) {
										return false;
									}
								}
								// Reverse direction for :only-* (if we haven't yet done so)
								start = dir = type === "only" && !start && "nextSibling";
							}
							return true;
						}

						start = [ forward ? parent.firstChild : parent.lastChild ];

						// non-xml :nth-child(...) stores cache data on `parent`
						if ( forward && useCache ) {
							// Seek `elem` from a previously-cached index
							outerCache = parent[ expando ] || (parent[ expando ] = {});
							cache = outerCache[ type ] || [];
							nodeIndex = cache[0] === dirruns && cache[1];
							diff = cache[0] === dirruns && cache[2];
							node = nodeIndex && parent.childNodes[ nodeIndex ];

							while ( (node = ++nodeIndex && node && node[ dir ] ||

								// Fallback to seeking `elem` from the start
								(diff = nodeIndex = 0) || start.pop()) ) {

								// When found, cache indexes on `parent` and break
								if ( node.nodeType === 1 && ++diff && node === elem ) {
									outerCache[ type ] = [ dirruns, nodeIndex, diff ];
									break;
								}
							}

						// Use previously-cached element index if available
						} else if ( useCache && (cache = (elem[ expando ] || (elem[ expando ] = {}))[ type ]) && cache[0] === dirruns ) {
							diff = cache[1];

						// xml :nth-child(...) or :nth-last-child(...) or :nth(-last)?-of-type(...)
						} else {
							// Use the same loop as above to seek `elem` from the start
							while ( (node = ++nodeIndex && node && node[ dir ] ||
								(diff = nodeIndex = 0) || start.pop()) ) {

								if ( ( ofType ? node.nodeName.toLowerCase() === name : node.nodeType === 1 ) && ++diff ) {
									// Cache the index of each encountered element
									if ( useCache ) {
										(node[ expando ] || (node[ expando ] = {}))[ type ] = [ dirruns, diff ];
									}

									if ( node === elem ) {
										break;
									}
								}
							}
						}

						// Incorporate the offset, then check against cycle size
						diff -= last;
						return diff === first || ( diff % first === 0 && diff / first >= 0 );
					}
				};
		},

		"PSEUDO": function( pseudo, argument ) {
			// pseudo-class names are case-insensitive
			// http://www.w3.org/TR/selectors/#pseudo-classes
			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
			// Remember that setFilters inherits from pseudos
			var args,
				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
					Sizzle.error( "unsupported pseudo: " + pseudo );

			// The user may use createPseudo to indicate that
			// arguments are needed to create the filter function
			// just as Sizzle does
			if ( fn[ expando ] ) {
				return fn( argument );
			}

			// But maintain support for old signatures
			if ( fn.length > 1 ) {
				args = [ pseudo, pseudo, "", argument ];
				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
					markFunction(function( seed, matches ) {
						var idx,
							matched = fn( seed, argument ),
							i = matched.length;
						while ( i-- ) {
							idx = indexOf.call( seed, matched[i] );
							seed[ idx ] = !( matches[ idx ] = matched[i] );
						}
					}) :
					function( elem ) {
						return fn( elem, 0, args );
					};
			}

			return fn;
		}
	},

	pseudos: {
		// Potentially complex pseudos
		"not": markFunction(function( selector ) {
			// Trim the selector passed to compile
			// to avoid treating leading and trailing
			// spaces as combinators
			var input = [],
				results = [],
				matcher = compile( selector.replace( rtrim, "$1" ) );

			return matcher[ expando ] ?
				markFunction(function( seed, matches, context, xml ) {
					var elem,
						unmatched = matcher( seed, null, xml, [] ),
						i = seed.length;

					// Match elements unmatched by `matcher`
					while ( i-- ) {
						if ( (elem = unmatched[i]) ) {
							seed[i] = !(matches[i] = elem);
						}
					}
				}) :
				function( elem, context, xml ) {
					input[0] = elem;
					matcher( input, null, xml, results );
					return !results.pop();
				};
		}),

		"has": markFunction(function( selector ) {
			return function( elem ) {
				return Sizzle( selector, elem ).length > 0;
			};
		}),

		"contains": markFunction(function( text ) {
			return function( elem ) {
				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
			};
		}),

		// "Whether an element is represented by a :lang() selector
		// is based solely on the element's language value
		// being equal to the identifier C,
		// or beginning with the identifier C immediately followed by "-".
		// The matching of C against the element's language value is performed case-insensitively.
		// The identifier C does not have to be a valid language name."
		// http://www.w3.org/TR/selectors/#lang-pseudo
		"lang": markFunction( function( lang ) {
			// lang value must be a valid identifier
			if ( !ridentifier.test(lang || "") ) {
				Sizzle.error( "unsupported lang: " + lang );
			}
			lang = lang.replace( runescape, funescape ).toLowerCase();
			return function( elem ) {
				var elemLang;
				do {
					if ( (elemLang = documentIsHTML ?
						elem.lang :
						elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) {

						elemLang = elemLang.toLowerCase();
						return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
					}
				} while ( (elem = elem.parentNode) && elem.nodeType === 1 );
				return false;
			};
		}),

		// Miscellaneous
		"target": function( elem ) {
			var hash = window.location && window.location.hash;
			return hash && hash.slice( 1 ) === elem.id;
		},

		"root": function( elem ) {
			return elem === docElem;
		},

		"focus": function( elem ) {
			return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
		},

		// Boolean properties
		"enabled": function( elem ) {
			return elem.disabled === false;
		},

		"disabled": function( elem ) {
			return elem.disabled === true;
		},

		"checked": function( elem ) {
			// In CSS3, :checked should return both checked and selected elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			var nodeName = elem.nodeName.toLowerCase();
			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
		},

		"selected": function( elem ) {
			// Accessing this property makes selected-by-default
			// options in Safari work properly
			if ( elem.parentNode ) {
				elem.parentNode.selectedIndex;
			}

			return elem.selected === true;
		},

		// Contents
		"empty": function( elem ) {
			// http://www.w3.org/TR/selectors/#empty-pseudo
			// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
			//   but not by others (comment: 8; processing instruction: 7; etc.)
			// nodeType < 6 works because attributes (2) do not appear as children
			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
				if ( elem.nodeType < 6 ) {
					return false;
				}
			}
			return true;
		},

		"parent": function( elem ) {
			return !Expr.pseudos["empty"]( elem );
		},

		// Element/input types
		"header": function( elem ) {
			return rheader.test( elem.nodeName );
		},

		"input": function( elem ) {
			return rinputs.test( elem.nodeName );
		},

		"button": function( elem ) {
			var name = elem.nodeName.toLowerCase();
			return name === "input" && elem.type === "button" || name === "button";
		},

		"text": function( elem ) {
			var attr;
			return elem.nodeName.toLowerCase() === "input" &&
				elem.type === "text" &&

				// Support: IE<8
				// New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" );
		},

		// Position-in-collection
		"first": createPositionalPseudo(function() {
			return [ 0 ];
		}),

		"last": createPositionalPseudo(function( matchIndexes, length ) {
			return [ length - 1 ];
		}),

		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
			return [ argument < 0 ? argument + length : argument ];
		}),

		"even": createPositionalPseudo(function( matchIndexes, length ) {
			var i = 0;
			for ( ; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"odd": createPositionalPseudo(function( matchIndexes, length ) {
			var i = 1;
			for ( ; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			var i = argument < 0 ? argument + length : argument;
			for ( ; --i >= 0; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			var i = argument < 0 ? argument + length : argument;
			for ( ; ++i < length; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		})
	}
};

Expr.pseudos["nth"] = Expr.pseudos["eq"];

// Add button/input type pseudos
for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
	Expr.pseudos[ i ] = createInputPseudo( i );
}
for ( i in { submit: true, reset: true } ) {
	Expr.pseudos[ i ] = createButtonPseudo( i );
}

// Easy API for creating new setFilters
function setFilters() {}
setFilters.prototype = Expr.filters = Expr.pseudos;
Expr.setFilters = new setFilters();

function tokenize( selector, parseOnly ) {
	var matched, match, tokens, type,
		soFar, groups, preFilters,
		cached = tokenCache[ selector + " " ];

	if ( cached ) {
		return parseOnly ? 0 : cached.slice( 0 );
	}

	soFar = selector;
	groups = [];
	preFilters = Expr.preFilter;

	while ( soFar ) {

		// Comma and first run
		if ( !matched || (match = rcomma.exec( soFar )) ) {
			if ( match ) {
				// Don't consume trailing commas as valid
				soFar = soFar.slice( match[0].length ) || soFar;
			}
			groups.push( (tokens = []) );
		}

		matched = false;

		// Combinators
		if ( (match = rcombinators.exec( soFar )) ) {
			matched = match.shift();
			tokens.push({
				value: matched,
				// Cast descendant combinators to space
				type: match[0].replace( rtrim, " " )
			});
			soFar = soFar.slice( matched.length );
		}

		// Filters
		for ( type in Expr.filter ) {
			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
				(match = preFilters[ type ]( match ))) ) {
				matched = match.shift();
				tokens.push({
					value: matched,
					type: type,
					matches: match
				});
				soFar = soFar.slice( matched.length );
			}
		}

		if ( !matched ) {
			break;
		}
	}

	// Return the length of the invalid excess
	// if we're just parsing
	// Otherwise, throw an error or return tokens
	return parseOnly ?
		soFar.length :
		soFar ?
			Sizzle.error( selector ) :
			// Cache the tokens
			tokenCache( selector, groups ).slice( 0 );
}

function toSelector( tokens ) {
	var i = 0,
		len = tokens.length,
		selector = "";
	for ( ; i < len; i++ ) {
		selector += tokens[i].value;
	}
	return selector;
}

function addCombinator( matcher, combinator, base ) {
	var dir = combinator.dir,
		checkNonElements = base && dir === "parentNode",
		doneName = done++;

	return combinator.first ?
		// Check against closest ancestor/preceding element
		function( elem, context, xml ) {
			while ( (elem = elem[ dir ]) ) {
				if ( elem.nodeType === 1 || checkNonElements ) {
					return matcher( elem, context, xml );
				}
			}
		} :

		// Check against all ancestor/preceding elements
		function( elem, context, xml ) {
			var oldCache, outerCache,
				newCache = [ dirruns, doneName ];

			// We can't set arbitrary data on XML nodes, so they don't benefit from dir caching
			if ( xml ) {
				while ( (elem = elem[ dir ]) ) {
					if ( elem.nodeType === 1 || checkNonElements ) {
						if ( matcher( elem, context, xml ) ) {
							return true;
						}
					}
				}
			} else {
				while ( (elem = elem[ dir ]) ) {
					if ( elem.nodeType === 1 || checkNonElements ) {
						outerCache = elem[ expando ] || (elem[ expando ] = {});
						if ( (oldCache = outerCache[ dir ]) &&
							oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {

							// Assign to newCache so results back-propagate to previous elements
							return (newCache[ 2 ] = oldCache[ 2 ]);
						} else {
							// Reuse newcache so results back-propagate to previous elements
							outerCache[ dir ] = newCache;

							// A match means we're done; a fail means we have to keep checking
							if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) {
								return true;
							}
						}
					}
				}
			}
		};
}

function elementMatcher( matchers ) {
	return matchers.length > 1 ?
		function( elem, context, xml ) {
			var i = matchers.length;
			while ( i-- ) {
				if ( !matchers[i]( elem, context, xml ) ) {
					return false;
				}
			}
			return true;
		} :
		matchers[0];
}

function condense( unmatched, map, filter, context, xml ) {
	var elem,
		newUnmatched = [],
		i = 0,
		len = unmatched.length,
		mapped = map != null;

	for ( ; i < len; i++ ) {
		if ( (elem = unmatched[i]) ) {
			if ( !filter || filter( elem, context, xml ) ) {
				newUnmatched.push( elem );
				if ( mapped ) {
					map.push( i );
				}
			}
		}
	}

	return newUnmatched;
}

function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
	if ( postFilter && !postFilter[ expando ] ) {
		postFilter = setMatcher( postFilter );
	}
	if ( postFinder && !postFinder[ expando ] ) {
		postFinder = setMatcher( postFinder, postSelector );
	}
	return markFunction(function( seed, results, context, xml ) {
		var temp, i, elem,
			preMap = [],
			postMap = [],
			preexisting = results.length,

			// Get initial elements from seed or context
			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),

			// Prefilter to get matcher input, preserving a map for seed-results synchronization
			matcherIn = preFilter && ( seed || !selector ) ?
				condense( elems, preMap, preFilter, context, xml ) :
				elems,

			matcherOut = matcher ?
				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?

					// ...intermediate processing is necessary
					[] :

					// ...otherwise use results directly
					results :
				matcherIn;

		// Find primary matches
		if ( matcher ) {
			matcher( matcherIn, matcherOut, context, xml );
		}

		// Apply postFilter
		if ( postFilter ) {
			temp = condense( matcherOut, postMap );
			postFilter( temp, [], context, xml );

			// Un-match failing elements by moving them back to matcherIn
			i = temp.length;
			while ( i-- ) {
				if ( (elem = temp[i]) ) {
					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
				}
			}
		}

		if ( seed ) {
			if ( postFinder || preFilter ) {
				if ( postFinder ) {
					// Get the final matcherOut by condensing this intermediate into postFinder contexts
					temp = [];
					i = matcherOut.length;
					while ( i-- ) {
						if ( (elem = matcherOut[i]) ) {
							// Restore matcherIn since elem is not yet a final match
							temp.push( (matcherIn[i] = elem) );
						}
					}
					postFinder( null, (matcherOut = []), temp, xml );
				}

				// Move matched elements from seed to results to keep them synchronized
				i = matcherOut.length;
				while ( i-- ) {
					if ( (elem = matcherOut[i]) &&
						(temp = postFinder ? indexOf.call( seed, elem ) : preMap[i]) > -1 ) {

						seed[temp] = !(results[temp] = elem);
					}
				}
			}

		// Add elements to results, through postFinder if defined
		} else {
			matcherOut = condense(
				matcherOut === results ?
					matcherOut.splice( preexisting, matcherOut.length ) :
					matcherOut
			);
			if ( postFinder ) {
				postFinder( null, results, matcherOut, xml );
			} else {
				push.apply( results, matcherOut );
			}
		}
	});
}

function matcherFromTokens( tokens ) {
	var checkContext, matcher, j,
		len = tokens.length,
		leadingRelative = Expr.relative[ tokens[0].type ],
		implicitRelative = leadingRelative || Expr.relative[" "],
		i = leadingRelative ? 1 : 0,

		// The foundational matcher ensures that elements are reachable from top-level context(s)
		matchContext = addCombinator( function( elem ) {
			return elem === checkContext;
		}, implicitRelative, true ),
		matchAnyContext = addCombinator( function( elem ) {
			return indexOf.call( checkContext, elem ) > -1;
		}, implicitRelative, true ),
		matchers = [ function( elem, context, xml ) {
			return ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
				(checkContext = context).nodeType ?
					matchContext( elem, context, xml ) :
					matchAnyContext( elem, context, xml ) );
		} ];

	for ( ; i < len; i++ ) {
		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
			matchers = [ addCombinator(elementMatcher( matchers ), matcher) ];
		} else {
			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );

			// Return special upon seeing a positional matcher
			if ( matcher[ expando ] ) {
				// Find the next relative operator (if any) for proper handling
				j = ++i;
				for ( ; j < len; j++ ) {
					if ( Expr.relative[ tokens[j].type ] ) {
						break;
					}
				}
				return setMatcher(
					i > 1 && elementMatcher( matchers ),
					i > 1 && toSelector(
						// If the preceding token was a descendant combinator, insert an implicit any-element `*`
						tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" })
					).replace( rtrim, "$1" ),
					matcher,
					i < j && matcherFromTokens( tokens.slice( i, j ) ),
					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
					j < len && toSelector( tokens )
				);
			}
			matchers.push( matcher );
		}
	}

	return elementMatcher( matchers );
}

function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
	var bySet = setMatchers.length > 0,
		byElement = elementMatchers.length > 0,
		superMatcher = function( seed, context, xml, results, outermost ) {
			var elem, j, matcher,
				matchedCount = 0,
				i = "0",
				unmatched = seed && [],
				setMatched = [],
				contextBackup = outermostContext,
				// We must always have either seed elements or outermost context
				elems = seed || byElement && Expr.find["TAG"]( "*", outermost ),
				// Use integer dirruns iff this is the outermost matcher
				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
				len = elems.length;

			if ( outermost ) {
				outermostContext = context !== document && context;
			}

			// Add elements passing elementMatchers directly to results
			// Keep `i` a string if there are no elements so `matchedCount` will be "00" below
			// Support: IE<9, Safari
			// Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
			for ( ; i !== len && (elem = elems[i]) != null; i++ ) {
				if ( byElement && elem ) {
					j = 0;
					while ( (matcher = elementMatchers[j++]) ) {
						if ( matcher( elem, context, xml ) ) {
							results.push( elem );
							break;
						}
					}
					if ( outermost ) {
						dirruns = dirrunsUnique;
					}
				}

				// Track unmatched elements for set filters
				if ( bySet ) {
					// They will have gone through all possible matchers
					if ( (elem = !matcher && elem) ) {
						matchedCount--;
					}

					// Lengthen the array for every element, matched or not
					if ( seed ) {
						unmatched.push( elem );
					}
				}
			}

			// Apply set filters to unmatched elements
			matchedCount += i;
			if ( bySet && i !== matchedCount ) {
				j = 0;
				while ( (matcher = setMatchers[j++]) ) {
					matcher( unmatched, setMatched, context, xml );
				}

				if ( seed ) {
					// Reintegrate element matches to eliminate the need for sorting
					if ( matchedCount > 0 ) {
						while ( i-- ) {
							if ( !(unmatched[i] || setMatched[i]) ) {
								setMatched[i] = pop.call( results );
							}
						}
					}

					// Discard index placeholder values to get only actual matches
					setMatched = condense( setMatched );
				}

				// Add matches to results
				push.apply( results, setMatched );

				// Seedless set matches succeeding multiple successful matchers stipulate sorting
				if ( outermost && !seed && setMatched.length > 0 &&
					( matchedCount + setMatchers.length ) > 1 ) {

					Sizzle.uniqueSort( results );
				}
			}

			// Override manipulation of globals by nested matchers
			if ( outermost ) {
				dirruns = dirrunsUnique;
				outermostContext = contextBackup;
			}

			return unmatched;
		};

	return bySet ?
		markFunction( superMatcher ) :
		superMatcher;
}

compile = Sizzle.compile = function( selector, group /* Internal Use Only */ ) {
	var i,
		setMatchers = [],
		elementMatchers = [],
		cached = compilerCache[ selector + " " ];

	if ( !cached ) {
		// Generate a function of recursive functions that can be used to check each element
		if ( !group ) {
			group = tokenize( selector );
		}
		i = group.length;
		while ( i-- ) {
			cached = matcherFromTokens( group[i] );
			if ( cached[ expando ] ) {
				setMatchers.push( cached );
			} else {
				elementMatchers.push( cached );
			}
		}

		// Cache the compiled function
		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );
	}
	return cached;
};

function multipleContexts( selector, contexts, results ) {
	var i = 0,
		len = contexts.length;
	for ( ; i < len; i++ ) {
		Sizzle( selector, contexts[i], results );
	}
	return results;
}

function select( selector, context, results, seed ) {
	var i, tokens, token, type, find,
		match = tokenize( selector );

	if ( !seed ) {
		// Try to minimize operations if there is only one group
		if ( match.length === 1 ) {

			// Take a shortcut and set the context if the root selector is an ID
			tokens = match[0] = match[0].slice( 0 );
			if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
					support.getById && context.nodeType === 9 && documentIsHTML &&
					Expr.relative[ tokens[1].type ] ) {

				context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0];
				if ( !context ) {
					return results;
				}
				selector = selector.slice( tokens.shift().value.length );
			}

			// Fetch a seed set for right-to-left matching
			i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length;
			while ( i-- ) {
				token = tokens[i];

				// Abort if we hit a combinator
				if ( Expr.relative[ (type = token.type) ] ) {
					break;
				}
				if ( (find = Expr.find[ type ]) ) {
					// Search, expanding context for leading sibling combinators
					if ( (seed = find(
						token.matches[0].replace( runescape, funescape ),
						rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context
					)) ) {

						// If seed is empty or no tokens remain, we can return early
						tokens.splice( i, 1 );
						selector = seed.length && toSelector( tokens );
						if ( !selector ) {
							push.apply( results, seed );
							return results;
						}

						break;
					}
				}
			}
		}
	}

	// Compile and execute a filtering function
	// Provide `match` to avoid retokenization if we modified the selector above
	compile( selector, match )(
		seed,
		context,
		!documentIsHTML,
		results,
		rsibling.test( selector ) && testContext( context.parentNode ) || context
	);
	return results;
}

// One-time assignments

// Sort stability
support.sortStable = expando.split("").sort( sortOrder ).join("") === expando;

// Support: Chrome<14
// Always assume duplicates if they aren't passed to the comparison function
support.detectDuplicates = !!hasDuplicate;

// Initialize against the default document
setDocument();

// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
// Detached nodes confoundingly follow *each other*
support.sortDetached = assert(function( div1 ) {
	// Should return 1, but returns 4 (following)
	return div1.compareDocumentPosition( document.createElement("div") ) & 1;
});

// Support: IE<8
// Prevent attribute/property "interpolation"
// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !assert(function( div ) {
	div.innerHTML = "<a href='#'></a>";
	return div.firstChild.getAttribute("href") === "#" ;
}) ) {
	addHandle( "type|href|height|width", function( elem, name, isXML ) {
		if ( !isXML ) {
			return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
		}
	});
}

// Support: IE<9
// Use defaultValue in place of getAttribute("value")
if ( !support.attributes || !assert(function( div ) {
	div.innerHTML = "<input/>";
	div.firstChild.setAttribute( "value", "" );
	return div.firstChild.getAttribute( "value" ) === "";
}) ) {
	addHandle( "value", function( elem, name, isXML ) {
		if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
			return elem.defaultValue;
		}
	});
}

// Support: IE<9
// Use getAttributeNode to fetch booleans when getAttribute lies
if ( !assert(function( div ) {
	return div.getAttribute("disabled") == null;
}) ) {
	addHandle( booleans, function( elem, name, isXML ) {
		var val;
		if ( !isXML ) {
			return elem[ name ] === true ? name.toLowerCase() :
					(val = elem.getAttributeNode( name )) && val.specified ?
					val.value :
				null;
		}
	});
}

return Sizzle;

})( window );



jQuery.find = Sizzle;
jQuery.expr = Sizzle.selectors;
jQuery.expr[":"] = jQuery.expr.pseudos;
jQuery.unique = Sizzle.uniqueSort;
jQuery.text = Sizzle.getText;
jQuery.isXMLDoc = Sizzle.isXML;
jQuery.contains = Sizzle.contains;



var rneedsContext = jQuery.expr.match.needsContext;

var rsingleTag = (/^<(\w+)\s*\/?>(?:<\/\1>|)$/);



var risSimple = /^.[^:#\[\.,]*$/;

// Implement the identical functionality for filter and not
function winnow( elements, qualifier, not ) {
	if ( jQuery.isFunction( qualifier ) ) {
		return jQuery.grep( elements, function( elem, i ) {
			/* jshint -W018 */
			return !!qualifier.call( elem, i, elem ) !== not;
		});

	}

	if ( qualifier.nodeType ) {
		return jQuery.grep( elements, function( elem ) {
			return ( elem === qualifier ) !== not;
		});

	}

	if ( typeof qualifier === "string" ) {
		if ( risSimple.test( qualifier ) ) {
			return jQuery.filter( qualifier, elements, not );
		}

		qualifier = jQuery.filter( qualifier, elements );
	}

	return jQuery.grep( elements, function( elem ) {
		return ( jQuery.inArray( elem, qualifier ) >= 0 ) !== not;
	});
}

jQuery.filter = function( expr, elems, not ) {
	var elem = elems[ 0 ];

	if ( not ) {
		expr = ":not(" + expr + ")";
	}

	return elems.length === 1 && elem.nodeType === 1 ?
		jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [] :
		jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
			return elem.nodeType === 1;
		}));
};

jQuery.fn.extend({
	find: function( selector ) {
		var i,
			ret = [],
			self = this,
			len = self.length;

		if ( typeof selector !== "string" ) {
			return this.pushStack( jQuery( selector ).filter(function() {
				for ( i = 0; i < len; i++ ) {
					if ( jQuery.contains( self[ i ], this ) ) {
						return true;
					}
				}
			}) );
		}

		for ( i = 0; i < len; i++ ) {
			jQuery.find( selector, self[ i ], ret );
		}

		// Needed because $( selector, context ) becomes $( context ).find( selector )
		ret = this.pushStack( len > 1 ? jQuery.unique( ret ) : ret );
		ret.selector = this.selector ? this.selector + " " + selector : selector;
		return ret;
	},
	filter: function( selector ) {
		return this.pushStack( winnow(this, selector || [], false) );
	},
	not: function( selector ) {
		return this.pushStack( winnow(this, selector || [], true) );
	},
	is: function( selector ) {
		return !!winnow(
			this,

			// If this is a positional/relative selector, check membership in the returned set
			// so $("p:first").is("p:last") won't return true for a doc with two "p".
			typeof selector === "string" && rneedsContext.test( selector ) ?
				jQuery( selector ) :
				selector || [],
			false
		).length;
	}
});


// Initialize a jQuery object


// A central reference to the root jQuery(document)
var rootjQuery,

	// Use the correct document accordingly with window argument (sandbox)
	document = window.document,

	// A simple way to check for HTML strings
	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
	// Strict HTML recognition (#11290: must start with <)
	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/,

	init = jQuery.fn.init = function( selector, context ) {
		var match, elem;

		// HANDLE: $(""), $(null), $(undefined), $(false)
		if ( !selector ) {
			return this;
		}

		// Handle HTML strings
		if ( typeof selector === "string" ) {
			if ( selector.charAt(0) === "<" && selector.charAt( selector.length - 1 ) === ">" && selector.length >= 3 ) {
				// Assume that strings that start and end with <> are HTML and skip the regex check
				match = [ null, selector, null ];

			} else {
				match = rquickExpr.exec( selector );
			}

			// Match html or make sure no context is specified for #id
			if ( match && (match[1] || !context) ) {

				// HANDLE: $(html) -> $(array)
				if ( match[1] ) {
					context = context instanceof jQuery ? context[0] : context;

					// scripts is true for back-compat
					// Intentionally let the error be thrown if parseHTML is not present
					jQuery.merge( this, jQuery.parseHTML(
						match[1],
						context && context.nodeType ? context.ownerDocument || context : document,
						true
					) );

					// HANDLE: $(html, props)
					if ( rsingleTag.test( match[1] ) && jQuery.isPlainObject( context ) ) {
						for ( match in context ) {
							// Properties of context are called as methods if possible
							if ( jQuery.isFunction( this[ match ] ) ) {
								this[ match ]( context[ match ] );

							// ...and otherwise set as attributes
							} else {
								this.attr( match, context[ match ] );
							}
						}
					}

					return this;

				// HANDLE: $(#id)
				} else {
					elem = document.getElementById( match[2] );

					// Check parentNode to catch when Blackberry 4.6 returns
					// nodes that are no longer in the document #6963
					if ( elem && elem.parentNode ) {
						// Handle the case where IE and Opera return items
						// by name instead of ID
						if ( elem.id !== match[2] ) {
							return rootjQuery.find( selector );
						}

						// Otherwise, we inject the element directly into the jQuery object
						this.length = 1;
						this[0] = elem;
					}

					this.context = document;
					this.selector = selector;
					return this;
				}

			// HANDLE: $(expr, $(...))
			} else if ( !context || context.jquery ) {
				return ( context || rootjQuery ).find( selector );

			// HANDLE: $(expr, context)
			// (which is just equivalent to: $(context).find(expr)
			} else {
				return this.constructor( context ).find( selector );
			}

		// HANDLE: $(DOMElement)
		} else if ( selector.nodeType ) {
			this.context = this[0] = selector;
			this.length = 1;
			return this;

		// HANDLE: $(function)
		// Shortcut for document ready
		} else if ( jQuery.isFunction( selector ) ) {
			return typeof rootjQuery.ready !== "undefined" ?
				rootjQuery.ready( selector ) :
				// Execute immediately if ready is not present
				selector( jQuery );
		}

		if ( selector.selector !== undefined ) {
			this.selector = selector.selector;
			this.context = selector.context;
		}

		return jQuery.makeArray( selector, this );
	};

// Give the init function the jQuery prototype for later instantiation
init.prototype = jQuery.fn;

// Initialize central reference
rootjQuery = jQuery( document );


var rparentsprev = /^(?:parents|prev(?:Until|All))/,
	// methods guaranteed to produce a unique set when starting from a unique set
	guaranteedUnique = {
		children: true,
		contents: true,
		next: true,
		prev: true
	};

jQuery.extend({
	dir: function( elem, dir, until ) {
		var matched = [],
			cur = elem[ dir ];

		while ( cur && cur.nodeType !== 9 && (until === undefined || cur.nodeType !== 1 || !jQuery( cur ).is( until )) ) {
			if ( cur.nodeType === 1 ) {
				matched.push( cur );
			}
			cur = cur[dir];
		}
		return matched;
	},

	sibling: function( n, elem ) {
		var r = [];

		for ( ; n; n = n.nextSibling ) {
			if ( n.nodeType === 1 && n !== elem ) {
				r.push( n );
			}
		}

		return r;
	}
});

jQuery.fn.extend({
	has: function( target ) {
		var i,
			targets = jQuery( target, this ),
			len = targets.length;

		return this.filter(function() {
			for ( i = 0; i < len; i++ ) {
				if ( jQuery.contains( this, targets[i] ) ) {
					return true;
				}
			}
		});
	},

	closest: function( selectors, context ) {
		var cur,
			i = 0,
			l = this.length,
			matched = [],
			pos = rneedsContext.test( selectors ) || typeof selectors !== "string" ?
				jQuery( selectors, context || this.context ) :
				0;

		for ( ; i < l; i++ ) {
			for ( cur = this[i]; cur && cur !== context; cur = cur.parentNode ) {
				// Always skip document fragments
				if ( cur.nodeType < 11 && (pos ?
					pos.index(cur) > -1 :

					// Don't pass non-elements to Sizzle
					cur.nodeType === 1 &&
						jQuery.find.matchesSelector(cur, selectors)) ) {

					matched.push( cur );
					break;
				}
			}
		}

		return this.pushStack( matched.length > 1 ? jQuery.unique( matched ) : matched );
	},

	// Determine the position of an element within
	// the matched set of elements
	index: function( elem ) {

		// No argument, return index in parent
		if ( !elem ) {
			return ( this[0] && this[0].parentNode ) ? this.first().prevAll().length : -1;
		}

		// index in selector
		if ( typeof elem === "string" ) {
			return jQuery.inArray( this[0], jQuery( elem ) );
		}

		// Locate the position of the desired element
		return jQuery.inArray(
			// If it receives a jQuery object, the first element is used
			elem.jquery ? elem[0] : elem, this );
	},

	add: function( selector, context ) {
		return this.pushStack(
			jQuery.unique(
				jQuery.merge( this.get(), jQuery( selector, context ) )
			)
		);
	},

	addBack: function( selector ) {
		return this.add( selector == null ?
			this.prevObject : this.prevObject.filter(selector)
		);
	}
});

function sibling( cur, dir ) {
	do {
		cur = cur[ dir ];
	} while ( cur && cur.nodeType !== 1 );

	return cur;
}

jQuery.each({
	parent: function( elem ) {
		var parent = elem.parentNode;
		return parent && parent.nodeType !== 11 ? parent : null;
	},
	parents: function( elem ) {
		return jQuery.dir( elem, "parentNode" );
	},
	parentsUntil: function( elem, i, until ) {
		return jQuery.dir( elem, "parentNode", until );
	},
	next: function( elem ) {
		return sibling( elem, "nextSibling" );
	},
	prev: function( elem ) {
		return sibling( elem, "previousSibling" );
	},
	nextAll: function( elem ) {
		return jQuery.dir( elem, "nextSibling" );
	},
	prevAll: function( elem ) {
		return jQuery.dir( elem, "previousSibling" );
	},
	nextUntil: function( elem, i, until ) {
		return jQuery.dir( elem, "nextSibling", until );
	},
	prevUntil: function( elem, i, until ) {
		return jQuery.dir( elem, "previousSibling", until );
	},
	siblings: function( elem ) {
		return jQuery.sibling( ( elem.parentNode || {} ).firstChild, elem );
	},
	children: function( elem ) {
		return jQuery.sibling( elem.firstChild );
	},
	contents: function( elem ) {
		return jQuery.nodeName( elem, "iframe" ) ?
			elem.contentDocument || elem.contentWindow.document :
			jQuery.merge( [], elem.childNodes );
	}
}, function( name, fn ) {
	jQuery.fn[ name ] = function( until, selector ) {
		var ret = jQuery.map( this, fn, until );

		if ( name.slice( -5 ) !== "Until" ) {
			selector = until;
		}

		if ( selector && typeof selector === "string" ) {
			ret = jQuery.filter( selector, ret );
		}

		if ( this.length > 1 ) {
			// Remove duplicates
			if ( !guaranteedUnique[ name ] ) {
				ret = jQuery.unique( ret );
			}

			// Reverse order for parents* and prev-derivatives
			if ( rparentsprev.test( name ) ) {
				ret = ret.reverse();
			}
		}

		return this.pushStack( ret );
	};
});
var rnotwhite = (/\S+/g);



// String to Object options format cache
var optionsCache = {};

// Convert String-formatted options into Object-formatted ones and store in cache
function createOptions( options ) {
	var object = optionsCache[ options ] = {};
	jQuery.each( options.match( rnotwhite ) || [], function( _, flag ) {
		object[ flag ] = true;
	});
	return object;
}

/*
 * Create a callback list using the following parameters:
 *
 *	options: an optional list of space-separated options that will change how
 *			the callback list behaves or a more traditional option object
 *
 * By default a callback list will act like an event callback list and can be
 * "fired" multiple times.
 *
 * Possible options:
 *
 *	once:			will ensure the callback list can only be fired once (like a Deferred)
 *
 *	memory:			will keep track of previous values and will call any callback added
 *					after the list has been fired right away with the latest "memorized"
 *					values (like a Deferred)
 *
 *	unique:			will ensure a callback can only be added once (no duplicate in the list)
 *
 *	stopOnFalse:	interrupt callings when a callback returns false
 *
 */
jQuery.Callbacks = function( options ) {

	// Convert options from String-formatted to Object-formatted if needed
	// (we check in cache first)
	options = typeof options === "string" ?
		( optionsCache[ options ] || createOptions( options ) ) :
		jQuery.extend( {}, options );

	var // Flag to know if list is currently firing
		firing,
		// Last fire value (for non-forgettable lists)
		memory,
		// Flag to know if list was already fired
		fired,
		// End of the loop when firing
		firingLength,
		// Index of currently firing callback (modified by remove if needed)
		firingIndex,
		// First callback to fire (used internally by add and fireWith)
		firingStart,
		// Actual callback list
		list = [],
		// Stack of fire calls for repeatable lists
		stack = !options.once && [],
		// Fire callbacks
		fire = function( data ) {
			memory = options.memory && data;
			fired = true;
			firingIndex = firingStart || 0;
			firingStart = 0;
			firingLength = list.length;
			firing = true;
			for ( ; list && firingIndex < firingLength; firingIndex++ ) {
				if ( list[ firingIndex ].apply( data[ 0 ], data[ 1 ] ) === false && options.stopOnFalse ) {
					memory = false; // To prevent further calls using add
					break;
				}
			}
			firing = false;
			if ( list ) {
				if ( stack ) {
					if ( stack.length ) {
						fire( stack.shift() );
					}
				} else if ( memory ) {
					list = [];
				} else {
					self.disable();
				}
			}
		},
		// Actual Callbacks object
		self = {
			// Add a callback or a collection of callbacks to the list
			add: function() {
				if ( list ) {
					// First, we save the current length
					var start = list.length;
					(function add( args ) {
						jQuery.each( args, function( _, arg ) {
							var type = jQuery.type( arg );
							if ( type === "function" ) {
								if ( !options.unique || !self.has( arg ) ) {
									list.push( arg );
								}
							} else if ( arg && arg.length && type !== "string" ) {
								// Inspect recursively
								add( arg );
							}
						});
					})( arguments );
					// Do we need to add the callbacks to the
					// current firing batch?
					if ( firing ) {
						firingLength = list.length;
					// With memory, if we're not firing then
					// we should call right away
					} else if ( memory ) {
						firingStart = start;
						fire( memory );
					}
				}
				return this;
			},
			// Remove a callback from the list
			remove: function() {
				if ( list ) {
					jQuery.each( arguments, function( _, arg ) {
						var index;
						while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
							list.splice( index, 1 );
							// Handle firing indexes
							if ( firing ) {
								if ( index <= firingLength ) {
									firingLength--;
								}
								if ( index <= firingIndex ) {
									firingIndex--;
								}
							}
						}
					});
				}
				return this;
			},
			// Check if a given callback is in the list.
			// If no argument is given, return whether or not list has callbacks attached.
			has: function( fn ) {
				return fn ? jQuery.inArray( fn, list ) > -1 : !!( list && list.length );
			},
			// Remove all callbacks from the list
			empty: function() {
				list = [];
				firingLength = 0;
				return this;
			},
			// Have the list do nothing anymore
			disable: function() {
				list = stack = memory = undefined;
				return this;
			},
			// Is it disabled?
			disabled: function() {
				return !list;
			},
			// Lock the list in its current state
			lock: function() {
				stack = undefined;
				if ( !memory ) {
					self.disable();
				}
				return this;
			},
			// Is it locked?
			locked: function() {
				return !stack;
			},
			// Call all callbacks with the given context and arguments
			fireWith: function( context, args ) {
				if ( list && ( !fired || stack ) ) {
					args = args || [];
					args = [ context, args.slice ? args.slice() : args ];
					if ( firing ) {
						stack.push( args );
					} else {
						fire( args );
					}
				}
				return this;
			},
			// Call all the callbacks with the given arguments
			fire: function() {
				self.fireWith( this, arguments );
				return this;
			},
			// To know if the callbacks have already been called at least once
			fired: function() {
				return !!fired;
			}
		};

	return self;
};


jQuery.extend({

	Deferred: function( func ) {
		var tuples = [
				// action, add listener, listener list, final state
				[ "resolve", "done", jQuery.Callbacks("once memory"), "resolved" ],
				[ "reject", "fail", jQuery.Callbacks("once memory"), "rejected" ],
				[ "notify", "progress", jQuery.Callbacks("memory") ]
			],
			state = "pending",
			promise = {
				state: function() {
					return state;
				},
				always: function() {
					deferred.done( arguments ).fail( arguments );
					return this;
				},
				then: function( /* fnDone, fnFail, fnProgress */ ) {
					var fns = arguments;
					return jQuery.Deferred(function( newDefer ) {
						jQuery.each( tuples, function( i, tuple ) {
							var fn = jQuery.isFunction( fns[ i ] ) && fns[ i ];
							// deferred[ done | fail | progress ] for forwarding actions to newDefer
							deferred[ tuple[1] ](function() {
								var returned = fn && fn.apply( this, arguments );
								if ( returned && jQuery.isFunction( returned.promise ) ) {
									returned.promise()
										.done( newDefer.resolve )
										.fail( newDefer.reject )
										.progress( newDefer.notify );
								} else {
									newDefer[ tuple[ 0 ] + "With" ]( this === promise ? newDefer.promise() : this, fn ? [ returned ] : arguments );
								}
							});
						});
						fns = null;
					}).promise();
				},
				// Get a promise for this deferred
				// If obj is provided, the promise aspect is added to the object
				promise: function( obj ) {
					return obj != null ? jQuery.extend( obj, promise ) : promise;
				}
			},
			deferred = {};

		// Keep pipe for back-compat
		promise.pipe = promise.then;

		// Add list-specific methods
		jQuery.each( tuples, function( i, tuple ) {
			var list = tuple[ 2 ],
				stateString = tuple[ 3 ];

			// promise[ done | fail | progress ] = list.add
			promise[ tuple[1] ] = list.add;

			// Handle state
			if ( stateString ) {
				list.add(function() {
					// state = [ resolved | rejected ]
					state = stateString;

				// [ reject_list | resolve_list ].disable; progress_list.lock
				}, tuples[ i ^ 1 ][ 2 ].disable, tuples[ 2 ][ 2 ].lock );
			}

			// deferred[ resolve | reject | notify ]
			deferred[ tuple[0] ] = function() {
				deferred[ tuple[0] + "With" ]( this === deferred ? promise : this, arguments );
				return this;
			};
			deferred[ tuple[0] + "With" ] = list.fireWith;
		});

		// Make the deferred a promise
		promise.promise( deferred );

		// Call given func if any
		if ( func ) {
			func.call( deferred, deferred );
		}

		// All done!
		return deferred;
	},

	// Deferred helper
	when: function( subordinate /* , ..., subordinateN */ ) {
		var i = 0,
			resolveValues = slice.call( arguments ),
			length = resolveValues.length,

			// the count of uncompleted subordinates
			remaining = length !== 1 || ( subordinate && jQuery.isFunction( subordinate.promise ) ) ? length : 0,

			// the master Deferred. If resolveValues consist of only a single Deferred, just use that.
			deferred = remaining === 1 ? subordinate : jQuery.Deferred(),

			// Update function for both resolve and progress values
			updateFunc = function( i, contexts, values ) {
				return function( value ) {
					contexts[ i ] = this;
					values[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
					if ( values === progressValues ) {
						deferred.notifyWith( contexts, values );

					} else if ( !(--remaining) ) {
						deferred.resolveWith( contexts, values );
					}
				};
			},

			progressValues, progressContexts, resolveContexts;

		// add listeners to Deferred subordinates; treat others as resolved
		if ( length > 1 ) {
			progressValues = new Array( length );
			progressContexts = new Array( length );
			resolveContexts = new Array( length );
			for ( ; i < length; i++ ) {
				if ( resolveValues[ i ] && jQuery.isFunction( resolveValues[ i ].promise ) ) {
					resolveValues[ i ].promise()
						.done( updateFunc( i, resolveContexts, resolveValues ) )
						.fail( deferred.reject )
						.progress( updateFunc( i, progressContexts, progressValues ) );
				} else {
					--remaining;
				}
			}
		}

		// if we're not waiting on anything, resolve the master
		if ( !remaining ) {
			deferred.resolveWith( resolveContexts, resolveValues );
		}

		return deferred.promise();
	}
});


// The deferred used on DOM ready
var readyList;

jQuery.fn.ready = function( fn ) {
	// Add the callback
	jQuery.ready.promise().done( fn );

	return this;
};

jQuery.extend({
	// Is the DOM ready to be used? Set to true once it occurs.
	isReady: false,

	// A counter to track how many items to wait for before
	// the ready event fires. See #6781
	readyWait: 1,

	// Hold (or release) the ready event
	holdReady: function( hold ) {
		if ( hold ) {
			jQuery.readyWait++;
		} else {
			jQuery.ready( true );
		}
	},

	// Handle when the DOM is ready
	ready: function( wait ) {

		// Abort if there are pending holds or we're already ready
		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
			return;
		}

		// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
		if ( !document.body ) {
			return setTimeout( jQuery.ready );
		}

		// Remember that the DOM is ready
		jQuery.isReady = true;

		// If a normal DOM Ready event fired, decrement, and wait if need be
		if ( wait !== true && --jQuery.readyWait > 0 ) {
			return;
		}

		// If there are functions bound, to execute
		readyList.resolveWith( document, [ jQuery ] );

		// Trigger any bound ready events
		if ( jQuery.fn.trigger ) {
			jQuery( document ).trigger("ready").off("ready");
		}
	}
});

/**
 * Clean-up method for dom ready events
 */
function detach() {
	if ( document.addEventListener ) {
		document.removeEventListener( "DOMContentLoaded", completed, false );
		window.removeEventListener( "load", completed, false );

	} else {
		document.detachEvent( "onreadystatechange", completed );
		window.detachEvent( "onload", completed );
	}
}

/**
 * The ready event handler and self cleanup method
 */
function completed() {
	// readyState === "complete" is good enough for us to call the dom ready in oldIE
	if ( document.addEventListener || event.type === "load" || document.readyState === "complete" ) {
		detach();
		jQuery.ready();
	}
}

jQuery.ready.promise = function( obj ) {
	if ( !readyList ) {

		readyList = jQuery.Deferred();

		// Catch cases where $(document).ready() is called after the browser event has already occurred.
		// we once tried to use readyState "interactive" here, but it caused issues like the one
		// discovered by ChrisS here: http://bugs.jquery.com/ticket/12282#comment:15
		if ( document.readyState === "complete" ) {
			// Handle it asynchronously to allow scripts the opportunity to delay ready
			setTimeout( jQuery.ready );

		// Standards-based browsers support DOMContentLoaded
		} else if ( document.addEventListener ) {
			// Use the handy event callback
			document.addEventListener( "DOMContentLoaded", completed, false );

			// A fallback to window.onload, that will always work
			window.addEventListener( "load", completed, false );

		// If IE event model is used
		} else {
			// Ensure firing before onload, maybe late but safe also for iframes
			document.attachEvent( "onreadystatechange", completed );

			// A fallback to window.onload, that will always work
			window.attachEvent( "onload", completed );

			// If IE and not a frame
			// continually check to see if the document is ready
			var top = false;

			try {
				top = window.frameElement == null && document.documentElement;
			} catch(e) {}

			if ( top && top.doScroll ) {
				(function doScrollCheck() {
					if ( !jQuery.isReady ) {

						try {
							// Use the trick by Diego Perini
							// http://javascript.nwbox.com/IEContentLoaded/
							top.doScroll("left");
						} catch(e) {
							return setTimeout( doScrollCheck, 50 );
						}

						// detach all dom ready events
						detach();

						// and execute any waiting functions
						jQuery.ready();
					}
				})();
			}
		}
	}
	return readyList.promise( obj );
};


var strundefined = typeof undefined;



// Support: IE<9
// Iteration over object's inherited properties before its own
var i;
for ( i in jQuery( support ) ) {
	break;
}
support.ownLast = i !== "0";

// Note: most support tests are defined in their respective modules.
// false until the test is run
support.inlineBlockNeedsLayout = false;

jQuery(function() {
	// We need to execute this one support test ASAP because we need to know
	// if body.style.zoom needs to be set.

	var container, div,
		body = document.getElementsByTagName("body")[0];

	if ( !body ) {
		// Return for frameset docs that don't have a body
		return;
	}

	// Setup
	container = document.createElement( "div" );
	container.style.cssText = "border:0;width:0;height:0;position:absolute;top:0;left:-9999px;margin-top:1px";

	div = document.createElement( "div" );
	body.appendChild( container ).appendChild( div );

	if ( typeof div.style.zoom !== strundefined ) {
		// Support: IE<8
		// Check if natively block-level elements act like inline-block
		// elements when setting their display to 'inline' and giving
		// them layout
		div.style.cssText = "border:0;margin:0;width:1px;padding:1px;display:inline;zoom:1";

		if ( (support.inlineBlockNeedsLayout = ( div.offsetWidth === 3 )) ) {
			// Prevent IE 6 from affecting layout for positioned elements #11048
			// Prevent IE from shrinking the body in IE 7 mode #12869
			// Support: IE<8
			body.style.zoom = 1;
		}
	}

	body.removeChild( container );

	// Null elements to avoid leaks in IE
	container = div = null;
});




(function() {
	var div = document.createElement( "div" );

	// Execute the test only if not already executed in another module.
	if (support.deleteExpando == null) {
		// Support: IE<9
		support.deleteExpando = true;
		try {
			delete div.test;
		} catch( e ) {
			support.deleteExpando = false;
		}
	}

	// Null elements to avoid leaks in IE.
	div = null;
})();


/**
 * Determines whether an object can have data
 */
jQuery.acceptData = function( elem ) {
	var noData = jQuery.noData[ (elem.nodeName + " ").toLowerCase() ],
		nodeType = +elem.nodeType || 1;

	// Do not set data on non-element DOM nodes because it will not be cleared (#8335).
	return nodeType !== 1 && nodeType !== 9 ?
		false :

		// Nodes accept data unless otherwise specified; rejection can be conditional
		!noData || noData !== true && elem.getAttribute("classid") === noData;
};


var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
	rmultiDash = /([A-Z])/g;

function dataAttr( elem, key, data ) {
	// If nothing was found internally, try to fetch any
	// data from the HTML5 data-* attribute
	if ( data === undefined && elem.nodeType === 1 ) {

		var name = "data-" + key.replace( rmultiDash, "-$1" ).toLowerCase();

		data = elem.getAttribute( name );

		if ( typeof data === "string" ) {
			try {
				data = data === "true" ? true :
					data === "false" ? false :
					data === "null" ? null :
					// Only convert to a number if it doesn't change the string
					+data + "" === data ? +data :
					rbrace.test( data ) ? jQuery.parseJSON( data ) :
					data;
			} catch( e ) {}

			// Make sure we set the data so it isn't changed later
			jQuery.data( elem, key, data );

		} else {
			data = undefined;
		}
	}

	return data;
}

// checks a cache object for emptiness
function isEmptyDataObject( obj ) {
	var name;
	for ( name in obj ) {

		// if the public data object is empty, the private is still empty
		if ( name === "data" && jQuery.isEmptyObject( obj[name] ) ) {
			continue;
		}
		if ( name !== "toJSON" ) {
			return false;
		}
	}

	return true;
}

function internalData( elem, name, data, pvt /* Internal Use Only */ ) {
	if ( !jQuery.acceptData( elem ) ) {
		return;
	}

	var ret, thisCache,
		internalKey = jQuery.expando,

		// We have to handle DOM nodes and JS objects differently because IE6-7
		// can't GC object references properly across the DOM-JS boundary
		isNode = elem.nodeType,

		// Only DOM nodes need the global jQuery cache; JS object data is
		// attached directly to the object so GC can occur automatically
		cache = isNode ? jQuery.cache : elem,

		// Only defining an ID for JS objects if its cache already exists allows
		// the code to shortcut on the same path as a DOM node with no cache
		id = isNode ? elem[ internalKey ] : elem[ internalKey ] && internalKey;

	// Avoid doing any more work than we need to when trying to get data on an
	// object that has no data at all
	if ( (!id || !cache[id] || (!pvt && !cache[id].data)) && data === undefined && typeof name === "string" ) {
		return;
	}

	if ( !id ) {
		// Only DOM nodes need a new unique ID for each element since their data
		// ends up in the global cache
		if ( isNode ) {
			id = elem[ internalKey ] = deletedIds.pop() || jQuery.guid++;
		} else {
			id = internalKey;
		}
	}

	if ( !cache[ id ] ) {
		// Avoid exposing jQuery metadata on plain JS objects when the object
		// is serialized using JSON.stringify
		cache[ id ] = isNode ? {} : { toJSON: jQuery.noop };
	}

	// An object can be passed to jQuery.data instead of a key/value pair; this gets
	// shallow copied over onto the existing cache
	if ( typeof name === "object" || typeof name === "function" ) {
		if ( pvt ) {
			cache[ id ] = jQuery.extend( cache[ id ], name );
		} else {
			cache[ id ].data = jQuery.extend( cache[ id ].data, name );
		}
	}

	thisCache = cache[ id ];

	// jQuery data() is stored in a separate object inside the object's internal data
	// cache in order to avoid key collisions between internal data and user-defined
	// data.
	if ( !pvt ) {
		if ( !thisCache.data ) {
			thisCache.data = {};
		}

		thisCache = thisCache.data;
	}

	if ( data !== undefined ) {
		thisCache[ jQuery.camelCase( name ) ] = data;
	}

	// Check for both converted-to-camel and non-converted data property names
	// If a data property was specified
	if ( typeof name === "string" ) {

		// First Try to find as-is property data
		ret = thisCache[ name ];

		// Test for null|undefined property data
		if ( ret == null ) {

			// Try to find the camelCased property
			ret = thisCache[ jQuery.camelCase( name ) ];
		}
	} else {
		ret = thisCache;
	}

	return ret;
}

function internalRemoveData( elem, name, pvt ) {
	if ( !jQuery.acceptData( elem ) ) {
		return;
	}

	var thisCache, i,
		isNode = elem.nodeType,

		// See jQuery.data for more information
		cache = isNode ? jQuery.cache : elem,
		id = isNode ? elem[ jQuery.expando ] : jQuery.expando;

	// If there is already no cache entry for this object, there is no
	// purpose in continuing
	if ( !cache[ id ] ) {
		return;
	}

	if ( name ) {

		thisCache = pvt ? cache[ id ] : cache[ id ].data;

		if ( thisCache ) {

			// Support array or space separated string names for data keys
			if ( !jQuery.isArray( name ) ) {

				// try the string as a key before any manipulation
				if ( name in thisCache ) {
					name = [ name ];
				} else {

					// split the camel cased version by spaces unless a key with the spaces exists
					name = jQuery.camelCase( name );
					if ( name in thisCache ) {
						name = [ name ];
					} else {
						name = name.split(" ");
					}
				}
			} else {
				// If "name" is an array of keys...
				// When data is initially created, via ("key", "val") signature,
				// keys will be converted to camelCase.
				// Since there is no way to tell _how_ a key was added, remove
				// both plain key and camelCase key. #12786
				// This will only penalize the array argument path.
				name = name.concat( jQuery.map( name, jQuery.camelCase ) );
			}

			i = name.length;
			while ( i-- ) {
				delete thisCache[ name[i] ];
			}

			// If there is no data left in the cache, we want to continue
			// and let the cache object itself get destroyed
			if ( pvt ? !isEmptyDataObject(thisCache) : !jQuery.isEmptyObject(thisCache) ) {
				return;
			}
		}
	}

	// See jQuery.data for more information
	if ( !pvt ) {
		delete cache[ id ].data;

		// Don't destroy the parent cache unless the internal data object
		// had been the only thing left in it
		if ( !isEmptyDataObject( cache[ id ] ) ) {
			return;
		}
	}

	// Destroy the cache
	if ( isNode ) {
		jQuery.cleanData( [ elem ], true );

	// Use delete when supported for expandos or `cache` is not a window per isWindow (#10080)
	/* jshint eqeqeq: false */
	} else if ( support.deleteExpando || cache != cache.window ) {
		/* jshint eqeqeq: true */
		delete cache[ id ];

	// When all else fails, null
	} else {
		cache[ id ] = null;
	}
}

jQuery.extend({
	cache: {},

	// The following elements (space-suffixed to avoid Object.prototype collisions)
	// throw uncatchable exceptions if you attempt to set expando properties
	noData: {
		"applet ": true,
		"embed ": true,
		// ...but Flash objects (which have this classid) *can* handle expandos
		"object ": "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
	},

	hasData: function( elem ) {
		elem = elem.nodeType ? jQuery.cache[ elem[jQuery.expando] ] : elem[ jQuery.expando ];
		return !!elem && !isEmptyDataObject( elem );
	},

	data: function( elem, name, data ) {
		return internalData( elem, name, data );
	},

	removeData: function( elem, name ) {
		return internalRemoveData( elem, name );
	},

	// For internal use only.
	_data: function( elem, name, data ) {
		return internalData( elem, name, data, true );
	},

	_removeData: function( elem, name ) {
		return internalRemoveData( elem, name, true );
	}
});

jQuery.fn.extend({
	data: function( key, value ) {
		var i, name, data,
			elem = this[0],
			attrs = elem && elem.attributes;

		// Special expections of .data basically thwart jQuery.access,
		// so implement the relevant behavior ourselves

		// Gets all values
		if ( key === undefined ) {
			if ( this.length ) {
				data = jQuery.data( elem );

				if ( elem.nodeType === 1 && !jQuery._data( elem, "parsedAttrs" ) ) {
					i = attrs.length;
					while ( i-- ) {
						name = attrs[i].name;

						if ( name.indexOf("data-") === 0 ) {
							name = jQuery.camelCase( name.slice(5) );

							dataAttr( elem, name, data[ name ] );
						}
					}
					jQuery._data( elem, "parsedAttrs", true );
				}
			}

			return data;
		}

		// Sets multiple values
		if ( typeof key === "object" ) {
			return this.each(function() {
				jQuery.data( this, key );
			});
		}

		return arguments.length > 1 ?

			// Sets one value
			this.each(function() {
				jQuery.data( this, key, value );
			}) :

			// Gets one value
			// Try to fetch any internally stored data first
			elem ? dataAttr( elem, key, jQuery.data( elem, key ) ) : undefined;
	},

	removeData: function( key ) {
		return this.each(function() {
			jQuery.removeData( this, key );
		});
	}
});


jQuery.extend({
	queue: function( elem, type, data ) {
		var queue;

		if ( elem ) {
			type = ( type || "fx" ) + "queue";
			queue = jQuery._data( elem, type );

			// Speed up dequeue by getting out quickly if this is just a lookup
			if ( data ) {
				if ( !queue || jQuery.isArray(data) ) {
					queue = jQuery._data( elem, type, jQuery.makeArray(data) );
				} else {
					queue.push( data );
				}
			}
			return queue || [];
		}
	},

	dequeue: function( elem, type ) {
		type = type || "fx";

		var queue = jQuery.queue( elem, type ),
			startLength = queue.length,
			fn = queue.shift(),
			hooks = jQuery._queueHooks( elem, type ),
			next = function() {
				jQuery.dequeue( elem, type );
			};

		// If the fx queue is dequeued, always remove the progress sentinel
		if ( fn === "inprogress" ) {
			fn = queue.shift();
			startLength--;
		}

		if ( fn ) {

			// Add a progress sentinel to prevent the fx queue from being
			// automatically dequeued
			if ( type === "fx" ) {
				queue.unshift( "inprogress" );
			}

			// clear up the last queue stop function
			delete hooks.stop;
			fn.call( elem, next, hooks );
		}

		if ( !startLength && hooks ) {
			hooks.empty.fire();
		}
	},

	// not intended for public consumption - generates a queueHooks object, or returns the current one
	_queueHooks: function( elem, type ) {
		var key = type + "queueHooks";
		return jQuery._data( elem, key ) || jQuery._data( elem, key, {
			empty: jQuery.Callbacks("once memory").add(function() {
				jQuery._removeData( elem, type + "queue" );
				jQuery._removeData( elem, key );
			})
		});
	}
});

jQuery.fn.extend({
	queue: function( type, data ) {
		var setter = 2;

		if ( typeof type !== "string" ) {
			data = type;
			type = "fx";
			setter--;
		}

		if ( arguments.length < setter ) {
			return jQuery.queue( this[0], type );
		}

		return data === undefined ?
			this :
			this.each(function() {
				var queue = jQuery.queue( this, type, data );

				// ensure a hooks for this queue
				jQuery._queueHooks( this, type );

				if ( type === "fx" && queue[0] !== "inprogress" ) {
					jQuery.dequeue( this, type );
				}
			});
	},
	dequeue: function( type ) {
		return this.each(function() {
			jQuery.dequeue( this, type );
		});
	},
	clearQueue: function( type ) {
		return this.queue( type || "fx", [] );
	},
	// Get a promise resolved when queues of a certain type
	// are emptied (fx is the type by default)
	promise: function( type, obj ) {
		var tmp,
			count = 1,
			defer = jQuery.Deferred(),
			elements = this,
			i = this.length,
			resolve = function() {
				if ( !( --count ) ) {
					defer.resolveWith( elements, [ elements ] );
				}
			};

		if ( typeof type !== "string" ) {
			obj = type;
			type = undefined;
		}
		type = type || "fx";

		while ( i-- ) {
			tmp = jQuery._data( elements[ i ], type + "queueHooks" );
			if ( tmp && tmp.empty ) {
				count++;
				tmp.empty.add( resolve );
			}
		}
		resolve();
		return defer.promise( obj );
	}
});
var pnum = (/[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/).source;

var cssExpand = [ "Top", "Right", "Bottom", "Left" ];

var isHidden = function( elem, el ) {
		// isHidden might be called from jQuery#filter function;
		// in that case, element will be second argument
		elem = el || elem;
		return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument, elem );
	};



// Multifunctional method to get and set values of a collection
// The value/s can optionally be executed if it's a function
var access = jQuery.access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
	var i = 0,
		length = elems.length,
		bulk = key == null;

	// Sets many values
	if ( jQuery.type( key ) === "object" ) {
		chainable = true;
		for ( i in key ) {
			jQuery.access( elems, fn, i, key[i], true, emptyGet, raw );
		}

	// Sets one value
	} else if ( value !== undefined ) {
		chainable = true;

		if ( !jQuery.isFunction( value ) ) {
			raw = true;
		}

		if ( bulk ) {
			// Bulk operations run against the entire set
			if ( raw ) {
				fn.call( elems, value );
				fn = null;

			// ...except when executing function values
			} else {
				bulk = fn;
				fn = function( elem, key, value ) {
					return bulk.call( jQuery( elem ), value );
				};
			}
		}

		if ( fn ) {
			for ( ; i < length; i++ ) {
				fn( elems[i], key, raw ? value : value.call( elems[i], i, fn( elems[i], key ) ) );
			}
		}
	}

	return chainable ?
		elems :

		// Gets
		bulk ?
			fn.call( elems ) :
			length ? fn( elems[0], key ) : emptyGet;
};
var rcheckableType = (/^(?:checkbox|radio)$/i);



(function() {
	var fragment = document.createDocumentFragment(),
		div = document.createElement("div"),
		input = document.createElement("input");

	// Setup
	div.setAttribute( "className", "t" );
	div.innerHTML = "  <link/><table></table><a href='/a'>a</a>";

	// IE strips leading whitespace when .innerHTML is used
	support.leadingWhitespace = div.firstChild.nodeType === 3;

	// Make sure that tbody elements aren't automatically inserted
	// IE will insert them into empty tables
	support.tbody = !div.getElementsByTagName( "tbody" ).length;

	// Make sure that link elements get serialized correctly by innerHTML
	// This requires a wrapper element in IE
	support.htmlSerialize = !!div.getElementsByTagName( "link" ).length;

	// Makes sure cloning an html5 element does not cause problems
	// Where outerHTML is undefined, this still works
	support.html5Clone =
		document.createElement( "nav" ).cloneNode( true ).outerHTML !== "<:nav></:nav>";

	// Check if a disconnected checkbox will retain its checked
	// value of true after appended to the DOM (IE6/7)
	input.type = "checkbox";
	input.checked = true;
	fragment.appendChild( input );
	support.appendChecked = input.checked;

	// Make sure textarea (and checkbox) defaultValue is properly cloned
	// Support: IE6-IE11+
	div.innerHTML = "<textarea>x</textarea>";
	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;

	// #11217 - WebKit loses check when the name is after the checked attribute
	fragment.appendChild( div );
	div.innerHTML = "<input type='radio' checked='checked' name='t'/>";

	// Support: Safari 5.1, iOS 5.1, Android 4.x, Android 2.3
	// old WebKit doesn't clone checked state correctly in fragments
	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;

	// Support: IE<9
	// Opera does not clone events (and typeof div.attachEvent === undefined).
	// IE9-10 clones events bound via attachEvent, but they don't trigger with .click()
	support.noCloneEvent = true;
	if ( div.attachEvent ) {
		div.attachEvent( "onclick", function() {
			support.noCloneEvent = false;
		});

		div.cloneNode( true ).click();
	}

	// Execute the test only if not already executed in another module.
	if (support.deleteExpando == null) {
		// Support: IE<9
		support.deleteExpando = true;
		try {
			delete div.test;
		} catch( e ) {
			support.deleteExpando = false;
		}
	}

	// Null elements to avoid leaks in IE.
	fragment = div = input = null;
})();


(function() {
	var i, eventName,
		div = document.createElement( "div" );

	// Support: IE<9 (lack submit/change bubble), Firefox 23+ (lack focusin event)
	for ( i in { submit: true, change: true, focusin: true }) {
		eventName = "on" + i;

		if ( !(support[ i + "Bubbles" ] = eventName in window) ) {
			// Beware of CSP restrictions (https://developer.mozilla.org/en/Security/CSP)
			div.setAttribute( eventName, "t" );
			support[ i + "Bubbles" ] = div.attributes[ eventName ].expando === false;
		}
	}

	// Null elements to avoid leaks in IE.
	div = null;
})();


var rformElems = /^(?:input|select|textarea)$/i,
	rkeyEvent = /^key/,
	rmouseEvent = /^(?:mouse|contextmenu)|click/,
	rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
	rtypenamespace = /^([^.]*)(?:\.(.+)|)$/;

function returnTrue() {
	return true;
}

function returnFalse() {
	return false;
}

function safeActiveElement() {
	try {
		return document.activeElement;
	} catch ( err ) { }
}

/*
 * Helper functions for managing events -- not part of the public interface.
 * Props to Dean Edwards' addEvent library for many of the ideas.
 */
jQuery.event = {

	global: {},

	add: function( elem, types, handler, data, selector ) {
		var tmp, events, t, handleObjIn,
			special, eventHandle, handleObj,
			handlers, type, namespaces, origType,
			elemData = jQuery._data( elem );

		// Don't attach events to noData or text/comment nodes (but allow plain objects)
		if ( !elemData ) {
			return;
		}

		// Caller can pass in an object of custom data in lieu of the handler
		if ( handler.handler ) {
			handleObjIn = handler;
			handler = handleObjIn.handler;
			selector = handleObjIn.selector;
		}

		// Make sure that the handler has a unique ID, used to find/remove it later
		if ( !handler.guid ) {
			handler.guid = jQuery.guid++;
		}

		// Init the element's event structure and main handler, if this is the first
		if ( !(events = elemData.events) ) {
			events = elemData.events = {};
		}
		if ( !(eventHandle = elemData.handle) ) {
			eventHandle = elemData.handle = function( e ) {
				// Discard the second event of a jQuery.event.trigger() and
				// when an event is called after a page has unloaded
				return typeof jQuery !== strundefined && (!e || jQuery.event.triggered !== e.type) ?
					jQuery.event.dispatch.apply( eventHandle.elem, arguments ) :
					undefined;
			};
			// Add elem as a property of the handle fn to prevent a memory leak with IE non-native events
			eventHandle.elem = elem;
		}

		// Handle multiple events separated by a space
		types = ( types || "" ).match( rnotwhite ) || [ "" ];
		t = types.length;
		while ( t-- ) {
			tmp = rtypenamespace.exec( types[t] ) || [];
			type = origType = tmp[1];
			namespaces = ( tmp[2] || "" ).split( "." ).sort();

			// There *must* be a type, no attaching namespace-only handlers
			if ( !type ) {
				continue;
			}

			// If event changes its type, use the special event handlers for the changed type
			special = jQuery.event.special[ type ] || {};

			// If selector defined, determine special event api type, otherwise given type
			type = ( selector ? special.delegateType : special.bindType ) || type;

			// Update special based on newly reset type
			special = jQuery.event.special[ type ] || {};

			// handleObj is passed to all event handlers
			handleObj = jQuery.extend({
				type: type,
				origType: origType,
				data: data,
				handler: handler,
				guid: handler.guid,
				selector: selector,
				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
				namespace: namespaces.join(".")
			}, handleObjIn );

			// Init the event handler queue if we're the first
			if ( !(handlers = events[ type ]) ) {
				handlers = events[ type ] = [];
				handlers.delegateCount = 0;

				// Only use addEventListener/attachEvent if the special events handler returns false
				if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
					// Bind the global event handler to the element
					if ( elem.addEventListener ) {
						elem.addEventListener( type, eventHandle, false );

					} else if ( elem.attachEvent ) {
						elem.attachEvent( "on" + type, eventHandle );
					}
				}
			}

			if ( special.add ) {
				special.add.call( elem, handleObj );

				if ( !handleObj.handler.guid ) {
					handleObj.handler.guid = handler.guid;
				}
			}

			// Add to the element's handler list, delegates in front
			if ( selector ) {
				handlers.splice( handlers.delegateCount++, 0, handleObj );
			} else {
				handlers.push( handleObj );
			}

			// Keep track of which events have ever been used, for event optimization
			jQuery.event.global[ type ] = true;
		}

		// Nullify elem to prevent memory leaks in IE
		elem = null;
	},

	// Detach an event or set of events from an element
	remove: function( elem, types, handler, selector, mappedTypes ) {
		var j, handleObj, tmp,
			origCount, t, events,
			special, handlers, type,
			namespaces, origType,
			elemData = jQuery.hasData( elem ) && jQuery._data( elem );

		if ( !elemData || !(events = elemData.events) ) {
			return;
		}

		// Once for each type.namespace in types; type may be omitted
		types = ( types || "" ).match( rnotwhite ) || [ "" ];
		t = types.length;
		while ( t-- ) {
			tmp = rtypenamespace.exec( types[t] ) || [];
			type = origType = tmp[1];
			namespaces = ( tmp[2] || "" ).split( "." ).sort();

			// Unbind all events (on this namespace, if provided) for the element
			if ( !type ) {
				for ( type in events ) {
					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
				}
				continue;
			}

			special = jQuery.event.special[ type ] || {};
			type = ( selector ? special.delegateType : special.bindType ) || type;
			handlers = events[ type ] || [];
			tmp = tmp[2] && new RegExp( "(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)" );

			// Remove matching events
			origCount = j = handlers.length;
			while ( j-- ) {
				handleObj = handlers[ j ];

				if ( ( mappedTypes || origType === handleObj.origType ) &&
					( !handler || handler.guid === handleObj.guid ) &&
					( !tmp || tmp.test( handleObj.namespace ) ) &&
					( !selector || selector === handleObj.selector || selector === "**" && handleObj.selector ) ) {
					handlers.splice( j, 1 );

					if ( handleObj.selector ) {
						handlers.delegateCount--;
					}
					if ( special.remove ) {
						special.remove.call( elem, handleObj );
					}
				}
			}

			// Remove generic event handler if we removed something and no more handlers exist
			// (avoids potential for endless recursion during removal of special event handlers)
			if ( origCount && !handlers.length ) {
				if ( !special.teardown || special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
					jQuery.removeEvent( elem, type, elemData.handle );
				}

				delete events[ type ];
			}
		}

		// Remove the expando if it's no longer used
		if ( jQuery.isEmptyObject( events ) ) {
			delete elemData.handle;

			// removeData also checks for emptiness and clears the expando if empty
			// so use it instead of delete
			jQuery._removeData( elem, "events" );
		}
	},

	trigger: function( event, data, elem, onlyHandlers ) {
		var handle, ontype, cur,
			bubbleType, special, tmp, i,
			eventPath = [ elem || document ],
			type = hasOwn.call( event, "type" ) ? event.type : event,
			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split(".") : [];

		cur = tmp = elem = elem || document;

		// Don't do events on text and comment nodes
		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
			return;
		}

		// focus/blur morphs to focusin/out; ensure we're not firing them right now
		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
			return;
		}

		if ( type.indexOf(".") >= 0 ) {
			// Namespaced trigger; create a regexp to match event type in handle()
			namespaces = type.split(".");
			type = namespaces.shift();
			namespaces.sort();
		}
		ontype = type.indexOf(":") < 0 && "on" + type;

		// Caller can pass in a jQuery.Event object, Object, or just an event type string
		event = event[ jQuery.expando ] ?
			event :
			new jQuery.Event( type, typeof event === "object" && event );

		// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
		event.isTrigger = onlyHandlers ? 2 : 3;
		event.namespace = namespaces.join(".");
		event.namespace_re = event.namespace ?
			new RegExp( "(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)" ) :
			null;

		// Clean up the event in case it is being reused
		event.result = undefined;
		if ( !event.target ) {
			event.target = elem;
		}

		// Clone any incoming data and prepend the event, creating the handler arg list
		data = data == null ?
			[ event ] :
			jQuery.makeArray( data, [ event ] );

		// Allow special events to draw outside the lines
		special = jQuery.event.special[ type ] || {};
		if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
			return;
		}

		// Determine event propagation path in advance, per W3C events spec (#9951)
		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
		if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {

			bubbleType = special.delegateType || type;
			if ( !rfocusMorph.test( bubbleType + type ) ) {
				cur = cur.parentNode;
			}
			for ( ; cur; cur = cur.parentNode ) {
				eventPath.push( cur );
				tmp = cur;
			}

			// Only add window if we got to document (e.g., not plain obj or detached DOM)
			if ( tmp === (elem.ownerDocument || document) ) {
				eventPath.push( tmp.defaultView || tmp.parentWindow || window );
			}
		}

		// Fire handlers on the event path
		i = 0;
		while ( (cur = eventPath[i++]) && !event.isPropagationStopped() ) {

			event.type = i > 1 ?
				bubbleType :
				special.bindType || type;

			// jQuery handler
			handle = ( jQuery._data( cur, "events" ) || {} )[ event.type ] && jQuery._data( cur, "handle" );
			if ( handle ) {
				handle.apply( cur, data );
			}

			// Native handler
			handle = ontype && cur[ ontype ];
			if ( handle && handle.apply && jQuery.acceptData( cur ) ) {
				event.result = handle.apply( cur, data );
				if ( event.result === false ) {
					event.preventDefault();
				}
			}
		}
		event.type = type;

		// If nobody prevented the default action, do it now
		if ( !onlyHandlers && !event.isDefaultPrevented() ) {

			if ( (!special._default || special._default.apply( eventPath.pop(), data ) === false) &&
				jQuery.acceptData( elem ) ) {

				// Call a native DOM method on the target with the same name name as the event.
				// Can't use an .isFunction() check here because IE6/7 fails that test.
				// Don't do default actions on window, that's where global variables be (#6170)
				if ( ontype && elem[ type ] && !jQuery.isWindow( elem ) ) {

					// Don't re-trigger an onFOO event when we call its FOO() method
					tmp = elem[ ontype ];

					if ( tmp ) {
						elem[ ontype ] = null;
					}

					// Prevent re-triggering of the same event, since we already bubbled it above
					jQuery.event.triggered = type;
					try {
						elem[ type ]();
					} catch ( e ) {
						// IE<9 dies on focus/blur to hidden element (#1486,#12518)
						// only reproducible on winXP IE8 native, not IE9 in IE8 mode
					}
					jQuery.event.triggered = undefined;

					if ( tmp ) {
						elem[ ontype ] = tmp;
					}
				}
			}
		}

		return event.result;
	},

	dispatch: function( event ) {

		// Make a writable jQuery.Event from the native event object
		event = jQuery.event.fix( event );

		var i, ret, handleObj, matched, j,
			handlerQueue = [],
			args = slice.call( arguments ),
			handlers = ( jQuery._data( this, "events" ) || {} )[ event.type ] || [],
			special = jQuery.event.special[ event.type ] || {};

		// Use the fix-ed jQuery.Event rather than the (read-only) native event
		args[0] = event;
		event.delegateTarget = this;

		// Call the preDispatch hook for the mapped type, and let it bail if desired
		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
			return;
		}

		// Determine handlers
		handlerQueue = jQuery.event.handlers.call( this, event, handlers );

		// Run delegates first; they may want to stop propagation beneath us
		i = 0;
		while ( (matched = handlerQueue[ i++ ]) && !event.isPropagationStopped() ) {
			event.currentTarget = matched.elem;

			j = 0;
			while ( (handleObj = matched.handlers[ j++ ]) && !event.isImmediatePropagationStopped() ) {

				// Triggered event must either 1) have no namespace, or
				// 2) have namespace(s) a subset or equal to those in the bound event (both can have no namespace).
				if ( !event.namespace_re || event.namespace_re.test( handleObj.namespace ) ) {

					event.handleObj = handleObj;
					event.data = handleObj.data;

					ret = ( (jQuery.event.special[ handleObj.origType ] || {}).handle || handleObj.handler )
							.apply( matched.elem, args );

					if ( ret !== undefined ) {
						if ( (event.result = ret) === false ) {
							event.preventDefault();
							event.stopPropagation();
						}
					}
				}
			}
		}

		// Call the postDispatch hook for the mapped type
		if ( special.postDispatch ) {
			special.postDispatch.call( this, event );
		}

		return event.result;
	},

	handlers: function( event, handlers ) {
		var sel, handleObj, matches, i,
			handlerQueue = [],
			delegateCount = handlers.delegateCount,
			cur = event.target;

		// Find delegate handlers
		// Black-hole SVG <use> instance trees (#13180)
		// Avoid non-left-click bubbling in Firefox (#3861)
		if ( delegateCount && cur.nodeType && (!event.button || event.type !== "click") ) {

			/* jshint eqeqeq: false */
			for ( ; cur != this; cur = cur.parentNode || this ) {
				/* jshint eqeqeq: true */

				// Don't check non-elements (#13208)
				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
				if ( cur.nodeType === 1 && (cur.disabled !== true || event.type !== "click") ) {
					matches = [];
					for ( i = 0; i < delegateCount; i++ ) {
						handleObj = handlers[ i ];

						// Don't conflict with Object.prototype properties (#13203)
						sel = handleObj.selector + " ";

						if ( matches[ sel ] === undefined ) {
							matches[ sel ] = handleObj.needsContext ?
								jQuery( sel, this ).index( cur ) >= 0 :
								jQuery.find( sel, this, null, [ cur ] ).length;
						}
						if ( matches[ sel ] ) {
							matches.push( handleObj );
						}
					}
					if ( matches.length ) {
						handlerQueue.push({ elem: cur, handlers: matches });
					}
				}
			}
		}

		// Add the remaining (directly-bound) handlers
		if ( delegateCount < handlers.length ) {
			handlerQueue.push({ elem: this, handlers: handlers.slice( delegateCount ) });
		}

		return handlerQueue;
	},

	fix: function( event ) {
		if ( event[ jQuery.expando ] ) {
			return event;
		}

		// Create a writable copy of the event object and normalize some properties
		var i, prop, copy,
			type = event.type,
			originalEvent = event,
			fixHook = this.fixHooks[ type ];

		if ( !fixHook ) {
			this.fixHooks[ type ] = fixHook =
				rmouseEvent.test( type ) ? this.mouseHooks :
				rkeyEvent.test( type ) ? this.keyHooks :
				{};
		}
		copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props;

		event = new jQuery.Event( originalEvent );

		i = copy.length;
		while ( i-- ) {
			prop = copy[ i ];
			event[ prop ] = originalEvent[ prop ];
		}

		// Support: IE<9
		// Fix target property (#1925)
		if ( !event.target ) {
			event.target = originalEvent.srcElement || document;
		}

		// Support: Chrome 23+, Safari?
		// Target should not be a text node (#504, #13143)
		if ( event.target.nodeType === 3 ) {
			event.target = event.target.parentNode;
		}

		// Support: IE<9
		// For mouse/key events, metaKey==false if it's undefined (#3368, #11328)
		event.metaKey = !!event.metaKey;

		return fixHook.filter ? fixHook.filter( event, originalEvent ) : event;
	},

	// Includes some event props shared by KeyEvent and MouseEvent
	props: "altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "),

	fixHooks: {},

	keyHooks: {
		props: "char charCode key keyCode".split(" "),
		filter: function( event, original ) {

			// Add which for key events
			if ( event.which == null ) {
				event.which = original.charCode != null ? original.charCode : original.keyCode;
			}

			return event;
		}
	},

	mouseHooks: {
		props: "button buttons clientX clientY fromElement offsetX offsetY pageX pageY screenX screenY toElement".split(" "),
		filter: function( event, original ) {
			var body, eventDoc, doc,
				button = original.button,
				fromElement = original.fromElement;

			// Calculate pageX/Y if missing and clientX/Y available
			if ( event.pageX == null && original.clientX != null ) {
				eventDoc = event.target.ownerDocument || document;
				doc = eventDoc.documentElement;
				body = eventDoc.body;

				event.pageX = original.clientX + ( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) - ( doc && doc.clientLeft || body && body.clientLeft || 0 );
				event.pageY = original.clientY + ( doc && doc.scrollTop  || body && body.scrollTop  || 0 ) - ( doc && doc.clientTop  || body && body.clientTop  || 0 );
			}

			// Add relatedTarget, if necessary
			if ( !event.relatedTarget && fromElement ) {
				event.relatedTarget = fromElement === event.target ? original.toElement : fromElement;
			}

			// Add which for click: 1 === left; 2 === middle; 3 === right
			// Note: button is not normalized, so don't use it
			if ( !event.which && button !== undefined ) {
				event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) );
			}

			return event;
		}
	},

	special: {
		load: {
			// Prevent triggered image.load events from bubbling to window.load
			noBubble: true
		},
		focus: {
			// Fire native event if possible so blur/focus sequence is correct
			trigger: function() {
				if ( this !== safeActiveElement() && this.focus ) {
					try {
						this.focus();
						return false;
					} catch ( e ) {
						// Support: IE<9
						// If we error on focus to hidden element (#1486, #12518),
						// let .trigger() run the handlers
					}
				}
			},
			delegateType: "focusin"
		},
		blur: {
			trigger: function() {
				if ( this === safeActiveElement() && this.blur ) {
					this.blur();
					return false;
				}
			},
			delegateType: "focusout"
		},
		click: {
			// For checkbox, fire native event so checked state will be right
			trigger: function() {
				if ( jQuery.nodeName( this, "input" ) && this.type === "checkbox" && this.click ) {
					this.click();
					return false;
				}
			},

			// For cross-browser consistency, don't fire native .click() on links
			_default: function( event ) {
				return jQuery.nodeName( event.target, "a" );
			}
		},

		beforeunload: {
			postDispatch: function( event ) {

				// Even when returnValue equals to undefined Firefox will still show alert
				if ( event.result !== undefined ) {
					event.originalEvent.returnValue = event.result;
				}
			}
		}
	},

	simulate: function( type, elem, event, bubble ) {
		// Piggyback on a donor event to simulate a different one.
		// Fake originalEvent to avoid donor's stopPropagation, but if the
		// simulated event prevents default then we do the same on the donor.
		var e = jQuery.extend(
			new jQuery.Event(),
			event,
			{
				type: type,
				isSimulated: true,
				originalEvent: {}
			}
		);
		if ( bubble ) {
			jQuery.event.trigger( e, null, elem );
		} else {
			jQuery.event.dispatch.call( elem, e );
		}
		if ( e.isDefaultPrevented() ) {
			event.preventDefault();
		}
	}
};

jQuery.removeEvent = document.removeEventListener ?
	function( elem, type, handle ) {
		if ( elem.removeEventListener ) {
			elem.removeEventListener( type, handle, false );
		}
	} :
	function( elem, type, handle ) {
		var name = "on" + type;

		if ( elem.detachEvent ) {

			// #8545, #7054, preventing memory leaks for custom events in IE6-8
			// detachEvent needed property on element, by name of that event, to properly expose it to GC
			if ( typeof elem[ name ] === strundefined ) {
				elem[ name ] = null;
			}

			elem.detachEvent( name, handle );
		}
	};

jQuery.Event = function( src, props ) {
	// Allow instantiation without the 'new' keyword
	if ( !(this instanceof jQuery.Event) ) {
		return new jQuery.Event( src, props );
	}

	// Event object
	if ( src && src.type ) {
		this.originalEvent = src;
		this.type = src.type;

		// Events bubbling up the document may have been marked as prevented
		// by a handler lower down the tree; reflect the correct value.
		this.isDefaultPrevented = src.defaultPrevented ||
				src.defaultPrevented === undefined && (
				// Support: IE < 9
				src.returnValue === false ||
				// Support: Android < 4.0
				src.getPreventDefault && src.getPreventDefault() ) ?
			returnTrue :
			returnFalse;

	// Event type
	} else {
		this.type = src;
	}

	// Put explicitly provided properties onto the event object
	if ( props ) {
		jQuery.extend( this, props );
	}

	// Create a timestamp if incoming event doesn't have one
	this.timeStamp = src && src.timeStamp || jQuery.now();

	// Mark it as fixed
	this[ jQuery.expando ] = true;
};

// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
jQuery.Event.prototype = {
	isDefaultPrevented: returnFalse,
	isPropagationStopped: returnFalse,
	isImmediatePropagationStopped: returnFalse,

	preventDefault: function() {
		var e = this.originalEvent;

		this.isDefaultPrevented = returnTrue;
		if ( !e ) {
			return;
		}

		// If preventDefault exists, run it on the original event
		if ( e.preventDefault ) {
			e.preventDefault();

		// Support: IE
		// Otherwise set the returnValue property of the original event to false
		} else {
			e.returnValue = false;
		}
	},
	stopPropagation: function() {
		var e = this.originalEvent;

		this.isPropagationStopped = returnTrue;
		if ( !e ) {
			return;
		}
		// If stopPropagation exists, run it on the original event
		if ( e.stopPropagation ) {
			e.stopPropagation();
		}

		// Support: IE
		// Set the cancelBubble property of the original event to true
		e.cancelBubble = true;
	},
	stopImmediatePropagation: function() {
		this.isImmediatePropagationStopped = returnTrue;
		this.stopPropagation();
	}
};

// Create mouseenter/leave events using mouseover/out and event-time checks
jQuery.each({
	mouseenter: "mouseover",
	mouseleave: "mouseout"
}, function( orig, fix ) {
	jQuery.event.special[ orig ] = {
		delegateType: fix,
		bindType: fix,

		handle: function( event ) {
			var ret,
				target = this,
				related = event.relatedTarget,
				handleObj = event.handleObj;

			// For mousenter/leave call the handler if related is outside the target.
			// NB: No relatedTarget if the mouse left/entered the browser window
			if ( !related || (related !== target && !jQuery.contains( target, related )) ) {
				event.type = handleObj.origType;
				ret = handleObj.handler.apply( this, arguments );
				event.type = fix;
			}
			return ret;
		}
	};
});

// IE submit delegation
if ( !support.submitBubbles ) {

	jQuery.event.special.submit = {
		setup: function() {
			// Only need this for delegated form submit events
			if ( jQuery.nodeName( this, "form" ) ) {
				return false;
			}

			// Lazy-add a submit handler when a descendant form may potentially be submitted
			jQuery.event.add( this, "click._submit keypress._submit", function( e ) {
				// Node name check avoids a VML-related crash in IE (#9807)
				var elem = e.target,
					form = jQuery.nodeName( elem, "input" ) || jQuery.nodeName( elem, "button" ) ? elem.form : undefined;
				if ( form && !jQuery._data( form, "submitBubbles" ) ) {
					jQuery.event.add( form, "submit._submit", function( event ) {
						event._submit_bubble = true;
					});
					jQuery._data( form, "submitBubbles", true );
				}
			});
			// return undefined since we don't need an event listener
		},

		postDispatch: function( event ) {
			// If form was submitted by the user, bubble the event up the tree
			if ( event._submit_bubble ) {
				delete event._submit_bubble;
				if ( this.parentNode && !event.isTrigger ) {
					jQuery.event.simulate( "submit", this.parentNode, event, true );
				}
			}
		},

		teardown: function() {
			// Only need this for delegated form submit events
			if ( jQuery.nodeName( this, "form" ) ) {
				return false;
			}

			// Remove delegated handlers; cleanData eventually reaps submit handlers attached above
			jQuery.event.remove( this, "._submit" );
		}
	};
}

// IE change delegation and checkbox/radio fix
if ( !support.changeBubbles ) {

	jQuery.event.special.change = {

		setup: function() {

			if ( rformElems.test( this.nodeName ) ) {
				// IE doesn't fire change on a check/radio until blur; trigger it on click
				// after a propertychange. Eat the blur-change in special.change.handle.
				// This still fires onchange a second time for check/radio after blur.
				if ( this.type === "checkbox" || this.type === "radio" ) {
					jQuery.event.add( this, "propertychange._change", function( event ) {
						if ( event.originalEvent.propertyName === "checked" ) {
							this._just_changed = true;
						}
					});
					jQuery.event.add( this, "click._change", function( event ) {
						if ( this._just_changed && !event.isTrigger ) {
							this._just_changed = false;
						}
						// Allow triggered, simulated change events (#11500)
						jQuery.event.simulate( "change", this, event, true );
					});
				}
				return false;
			}
			// Delegated event; lazy-add a change handler on descendant inputs
			jQuery.event.add( this, "beforeactivate._change", function( e ) {
				var elem = e.target;

				if ( rformElems.test( elem.nodeName ) && !jQuery._data( elem, "changeBubbles" ) ) {
					jQuery.event.add( elem, "change._change", function( event ) {
						if ( this.parentNode && !event.isSimulated && !event.isTrigger ) {
							jQuery.event.simulate( "change", this.parentNode, event, true );
						}
					});
					jQuery._data( elem, "changeBubbles", true );
				}
			});
		},

		handle: function( event ) {
			var elem = event.target;

			// Swallow native change events from checkbox/radio, we already triggered them above
			if ( this !== elem || event.isSimulated || event.isTrigger || (elem.type !== "radio" && elem.type !== "checkbox") ) {
				return event.handleObj.handler.apply( this, arguments );
			}
		},

		teardown: function() {
			jQuery.event.remove( this, "._change" );

			return !rformElems.test( this.nodeName );
		}
	};
}

// Create "bubbling" focus and blur events
if ( !support.focusinBubbles ) {
	jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) {

		// Attach a single capturing handler on the document while someone wants focusin/focusout
		var handler = function( event ) {
				jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ), true );
			};

		jQuery.event.special[ fix ] = {
			setup: function() {
				var doc = this.ownerDocument || this,
					attaches = jQuery._data( doc, fix );

				if ( !attaches ) {
					doc.addEventListener( orig, handler, true );
				}
				jQuery._data( doc, fix, ( attaches || 0 ) + 1 );
			},
			teardown: function() {
				var doc = this.ownerDocument || this,
					attaches = jQuery._data( doc, fix ) - 1;

				if ( !attaches ) {
					doc.removeEventListener( orig, handler, true );
					jQuery._removeData( doc, fix );
				} else {
					jQuery._data( doc, fix, attaches );
				}
			}
		};
	});
}

jQuery.fn.extend({

	on: function( types, selector, data, fn, /*INTERNAL*/ one ) {
		var type, origFn;

		// Types can be a map of types/handlers
		if ( typeof types === "object" ) {
			// ( types-Object, selector, data )
			if ( typeof selector !== "string" ) {
				// ( types-Object, data )
				data = data || selector;
				selector = undefined;
			}
			for ( type in types ) {
				this.on( type, selector, data, types[ type ], one );
			}
			return this;
		}

		if ( data == null && fn == null ) {
			// ( types, fn )
			fn = selector;
			data = selector = undefined;
		} else if ( fn == null ) {
			if ( typeof selector === "string" ) {
				// ( types, selector, fn )
				fn = data;
				data = undefined;
			} else {
				// ( types, data, fn )
				fn = data;
				data = selector;
				selector = undefined;
			}
		}
		if ( fn === false ) {
			fn = returnFalse;
		} else if ( !fn ) {
			return this;
		}

		if ( one === 1 ) {
			origFn = fn;
			fn = function( event ) {
				// Can use an empty set, since event contains the info
				jQuery().off( event );
				return origFn.apply( this, arguments );
			};
			// Use same guid so caller can remove using origFn
			fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
		}
		return this.each( function() {
			jQuery.event.add( this, types, fn, data, selector );
		});
	},
	one: function( types, selector, data, fn ) {
		return this.on( types, selector, data, fn, 1 );
	},
	off: function( types, selector, fn ) {
		var handleObj, type;
		if ( types && types.preventDefault && types.handleObj ) {
			// ( event )  dispatched jQuery.Event
			handleObj = types.handleObj;
			jQuery( types.delegateTarget ).off(
				handleObj.namespace ? handleObj.origType + "." + handleObj.namespace : handleObj.origType,
				handleObj.selector,
				handleObj.handler
			);
			return this;
		}
		if ( typeof types === "object" ) {
			// ( types-object [, selector] )
			for ( type in types ) {
				this.off( type, selector, types[ type ] );
			}
			return this;
		}
		if ( selector === false || typeof selector === "function" ) {
			// ( types [, fn] )
			fn = selector;
			selector = undefined;
		}
		if ( fn === false ) {
			fn = returnFalse;
		}
		return this.each(function() {
			jQuery.event.remove( this, types, fn, selector );
		});
	},

	trigger: function( type, data ) {
		return this.each(function() {
			jQuery.event.trigger( type, data, this );
		});
	},
	triggerHandler: function( type, data ) {
		var elem = this[0];
		if ( elem ) {
			return jQuery.event.trigger( type, data, elem, true );
		}
	}
});


function createSafeFragment( document ) {
	var list = nodeNames.split( "|" ),
		safeFrag = document.createDocumentFragment();

	if ( safeFrag.createElement ) {
		while ( list.length ) {
			safeFrag.createElement(
				list.pop()
			);
		}
	}
	return safeFrag;
}

var nodeNames = "abbr|article|aside|audio|bdi|canvas|data|datalist|details|figcaption|figure|footer|" +
		"header|hgroup|mark|meter|nav|output|progress|section|summary|time|video",
	rinlinejQuery = / jQuery\d+="(?:null|\d+)"/g,
	rnoshimcache = new RegExp("<(?:" + nodeNames + ")[\\s/>]", "i"),
	rleadingWhitespace = /^\s+/,
	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi,
	rtagName = /<([\w:]+)/,
	rtbody = /<tbody/i,
	rhtml = /<|&#?\w+;/,
	rnoInnerhtml = /<(?:script|style|link)/i,
	// checked="checked" or checked
	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
	rscriptType = /^$|\/(?:java|ecma)script/i,
	rscriptTypeMasked = /^true\/(.*)/,
	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g,

	// We have to close these tags to support XHTML (#13200)
	wrapMap = {
		option: [ 1, "<select multiple='multiple'>", "</select>" ],
		legend: [ 1, "<fieldset>", "</fieldset>" ],
		area: [ 1, "<map>", "</map>" ],
		param: [ 1, "<object>", "</object>" ],
		thead: [ 1, "<table>", "</table>" ],
		tr: [ 2, "<table><tbody>", "</tbody></table>" ],
		col: [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ],
		td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],

		// IE6-8 can't serialize link, script, style, or any html5 (NoScope) tags,
		// unless wrapped in a div with non-breaking characters in front of it.
		_default: support.htmlSerialize ? [ 0, "", "" ] : [ 1, "X<div>", "</div>"  ]
	},
	safeFragment = createSafeFragment( document ),
	fragmentDiv = safeFragment.appendChild( document.createElement("div") );

wrapMap.optgroup = wrapMap.option;
wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
wrapMap.th = wrapMap.td;

function getAll( context, tag ) {
	var elems, elem,
		i = 0,
		found = typeof context.getElementsByTagName !== strundefined ? context.getElementsByTagName( tag || "*" ) :
			typeof context.querySelectorAll !== strundefined ? context.querySelectorAll( tag || "*" ) :
			undefined;

	if ( !found ) {
		for ( found = [], elems = context.childNodes || context; (elem = elems[i]) != null; i++ ) {
			if ( !tag || jQuery.nodeName( elem, tag ) ) {
				found.push( elem );
			} else {
				jQuery.merge( found, getAll( elem, tag ) );
			}
		}
	}

	return tag === undefined || tag && jQuery.nodeName( context, tag ) ?
		jQuery.merge( [ context ], found ) :
		found;
}

// Used in buildFragment, fixes the defaultChecked property
function fixDefaultChecked( elem ) {
	if ( rcheckableType.test( elem.type ) ) {
		elem.defaultChecked = elem.checked;
	}
}

// Support: IE<8
// Manipulating tables requires a tbody
function manipulationTarget( elem, content ) {
	return jQuery.nodeName( elem, "table" ) &&
		jQuery.nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ?

		elem.getElementsByTagName("tbody")[0] ||
			elem.appendChild( elem.ownerDocument.createElement("tbody") ) :
		elem;
}

// Replace/restore the type attribute of script elements for safe DOM manipulation
function disableScript( elem ) {
	elem.type = (jQuery.find.attr( elem, "type" ) !== null) + "/" + elem.type;
	return elem;
}
function restoreScript( elem ) {
	var match = rscriptTypeMasked.exec( elem.type );
	if ( match ) {
		elem.type = match[1];
	} else {
		elem.removeAttribute("type");
	}
	return elem;
}

// Mark scripts as having already been evaluated
function setGlobalEval( elems, refElements ) {
	var elem,
		i = 0;
	for ( ; (elem = elems[i]) != null; i++ ) {
		jQuery._data( elem, "globalEval", !refElements || jQuery._data( refElements[i], "globalEval" ) );
	}
}

function cloneCopyEvent( src, dest ) {

	if ( dest.nodeType !== 1 || !jQuery.hasData( src ) ) {
		return;
	}

	var type, i, l,
		oldData = jQuery._data( src ),
		curData = jQuery._data( dest, oldData ),
		events = oldData.events;

	if ( events ) {
		delete curData.handle;
		curData.events = {};

		for ( type in events ) {
			for ( i = 0, l = events[ type ].length; i < l; i++ ) {
				jQuery.event.add( dest, type, events[ type ][ i ] );
			}
		}
	}

	// make the cloned public data object a copy from the original
	if ( curData.data ) {
		curData.data = jQuery.extend( {}, curData.data );
	}
}

function fixCloneNodeIssues( src, dest ) {
	var nodeName, e, data;

	// We do not need to do anything for non-Elements
	if ( dest.nodeType !== 1 ) {
		return;
	}

	nodeName = dest.nodeName.toLowerCase();

	// IE6-8 copies events bound via attachEvent when using cloneNode.
	if ( !support.noCloneEvent && dest[ jQuery.expando ] ) {
		data = jQuery._data( dest );

		for ( e in data.events ) {
			jQuery.removeEvent( dest, e, data.handle );
		}

		// Event data gets referenced instead of copied if the expando gets copied too
		dest.removeAttribute( jQuery.expando );
	}

	// IE blanks contents when cloning scripts, and tries to evaluate newly-set text
	if ( nodeName === "script" && dest.text !== src.text ) {
		disableScript( dest ).text = src.text;
		restoreScript( dest );

	// IE6-10 improperly clones children of object elements using classid.
	// IE10 throws NoModificationAllowedError if parent is null, #12132.
	} else if ( nodeName === "object" ) {
		if ( dest.parentNode ) {
			dest.outerHTML = src.outerHTML;
		}

		// This path appears unavoidable for IE9. When cloning an object
		// element in IE9, the outerHTML strategy above is not sufficient.
		// If the src has innerHTML and the destination does not,
		// copy the src.innerHTML into the dest.innerHTML. #10324
		if ( support.html5Clone && ( src.innerHTML && !jQuery.trim(dest.innerHTML) ) ) {
			dest.innerHTML = src.innerHTML;
		}

	} else if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
		// IE6-8 fails to persist the checked state of a cloned checkbox
		// or radio button. Worse, IE6-7 fail to give the cloned element
		// a checked appearance if the defaultChecked value isn't also set

		dest.defaultChecked = dest.checked = src.checked;

		// IE6-7 get confused and end up setting the value of a cloned
		// checkbox/radio button to an empty string instead of "on"
		if ( dest.value !== src.value ) {
			dest.value = src.value;
		}

	// IE6-8 fails to return the selected option to the default selected
	// state when cloning options
	} else if ( nodeName === "option" ) {
		dest.defaultSelected = dest.selected = src.defaultSelected;

	// IE6-8 fails to set the defaultValue to the correct value when
	// cloning other types of input fields
	} else if ( nodeName === "input" || nodeName === "textarea" ) {
		dest.defaultValue = src.defaultValue;
	}
}

jQuery.extend({
	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
		var destElements, node, clone, i, srcElements,
			inPage = jQuery.contains( elem.ownerDocument, elem );

		if ( support.html5Clone || jQuery.isXMLDoc(elem) || !rnoshimcache.test( "<" + elem.nodeName + ">" ) ) {
			clone = elem.cloneNode( true );

		// IE<=8 does not properly clone detached, unknown element nodes
		} else {
			fragmentDiv.innerHTML = elem.outerHTML;
			fragmentDiv.removeChild( clone = fragmentDiv.firstChild );
		}

		if ( (!support.noCloneEvent || !support.noCloneChecked) &&
				(elem.nodeType === 1 || elem.nodeType === 11) && !jQuery.isXMLDoc(elem) ) {

			// We eschew Sizzle here for performance reasons: http://jsperf.com/getall-vs-sizzle/2
			destElements = getAll( clone );
			srcElements = getAll( elem );

			// Fix all IE cloning issues
			for ( i = 0; (node = srcElements[i]) != null; ++i ) {
				// Ensure that the destination node is not null; Fixes #9587
				if ( destElements[i] ) {
					fixCloneNodeIssues( node, destElements[i] );
				}
			}
		}

		// Copy the events from the original to the clone
		if ( dataAndEvents ) {
			if ( deepDataAndEvents ) {
				srcElements = srcElements || getAll( elem );
				destElements = destElements || getAll( clone );

				for ( i = 0; (node = srcElements[i]) != null; i++ ) {
					cloneCopyEvent( node, destElements[i] );
				}
			} else {
				cloneCopyEvent( elem, clone );
			}
		}

		// Preserve script evaluation history
		destElements = getAll( clone, "script" );
		if ( destElements.length > 0 ) {
			setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
		}

		destElements = srcElements = node = null;

		// Return the cloned set
		return clone;
	},

	buildFragment: function( elems, context, scripts, selection ) {
		var j, elem, contains,
			tmp, tag, tbody, wrap,
			l = elems.length,

			// Ensure a safe fragment
			safe = createSafeFragment( context ),

			nodes = [],
			i = 0;

		for ( ; i < l; i++ ) {
			elem = elems[ i ];

			if ( elem || elem === 0 ) {

				// Add nodes directly
				if ( jQuery.type( elem ) === "object" ) {
					jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );

				// Convert non-html into a text node
				} else if ( !rhtml.test( elem ) ) {
					nodes.push( context.createTextNode( elem ) );

				// Convert html into DOM nodes
				} else {
					tmp = tmp || safe.appendChild( context.createElement("div") );

					// Deserialize a standard representation
					tag = (rtagName.exec( elem ) || [ "", "" ])[ 1 ].toLowerCase();
					wrap = wrapMap[ tag ] || wrapMap._default;

					tmp.innerHTML = wrap[1] + elem.replace( rxhtmlTag, "<$1></$2>" ) + wrap[2];

					// Descend through wrappers to the right content
					j = wrap[0];
					while ( j-- ) {
						tmp = tmp.lastChild;
					}

					// Manually add leading whitespace removed by IE
					if ( !support.leadingWhitespace && rleadingWhitespace.test( elem ) ) {
						nodes.push( context.createTextNode( rleadingWhitespace.exec( elem )[0] ) );
					}

					// Remove IE's autoinserted <tbody> from table fragments
					if ( !support.tbody ) {

						// String was a <table>, *may* have spurious <tbody>
						elem = tag === "table" && !rtbody.test( elem ) ?
							tmp.firstChild :

							// String was a bare <thead> or <tfoot>
							wrap[1] === "<table>" && !rtbody.test( elem ) ?
								tmp :
								0;

						j = elem && elem.childNodes.length;
						while ( j-- ) {
							if ( jQuery.nodeName( (tbody = elem.childNodes[j]), "tbody" ) && !tbody.childNodes.length ) {
								elem.removeChild( tbody );
							}
						}
					}

					jQuery.merge( nodes, tmp.childNodes );

					// Fix #12392 for WebKit and IE > 9
					tmp.textContent = "";

					// Fix #12392 for oldIE
					while ( tmp.firstChild ) {
						tmp.removeChild( tmp.firstChild );
					}

					// Remember the top-level container for proper cleanup
					tmp = safe.lastChild;
				}
			}
		}

		// Fix #11356: Clear elements from fragment
		if ( tmp ) {
			safe.removeChild( tmp );
		}

		// Reset defaultChecked for any radios and checkboxes
		// about to be appended to the DOM in IE 6/7 (#8060)
		if ( !support.appendChecked ) {
			jQuery.grep( getAll( nodes, "input" ), fixDefaultChecked );
		}

		i = 0;
		while ( (elem = nodes[ i++ ]) ) {

			// #4087 - If origin and destination elements are the same, and this is
			// that element, do not do anything
			if ( selection && jQuery.inArray( elem, selection ) !== -1 ) {
				continue;
			}

			contains = jQuery.contains( elem.ownerDocument, elem );

			// Append to fragment
			tmp = getAll( safe.appendChild( elem ), "script" );

			// Preserve script evaluation history
			if ( contains ) {
				setGlobalEval( tmp );
			}

			// Capture executables
			if ( scripts ) {
				j = 0;
				while ( (elem = tmp[ j++ ]) ) {
					if ( rscriptType.test( elem.type || "" ) ) {
						scripts.push( elem );
					}
				}
			}
		}

		tmp = null;

		return safe;
	},

	cleanData: function( elems, /* internal */ acceptData ) {
		var elem, type, id, data,
			i = 0,
			internalKey = jQuery.expando,
			cache = jQuery.cache,
			deleteExpando = support.deleteExpando,
			special = jQuery.event.special;

		for ( ; (elem = elems[i]) != null; i++ ) {
			if ( acceptData || jQuery.acceptData( elem ) ) {

				id = elem[ internalKey ];
				data = id && cache[ id ];

				if ( data ) {
					if ( data.events ) {
						for ( type in data.events ) {
							if ( special[ type ] ) {
								jQuery.event.remove( elem, type );

							// This is a shortcut to avoid jQuery.event.remove's overhead
							} else {
								jQuery.removeEvent( elem, type, data.handle );
							}
						}
					}

					// Remove cache only if it was not already removed by jQuery.event.remove
					if ( cache[ id ] ) {

						delete cache[ id ];

						// IE does not allow us to delete expando properties from nodes,
						// nor does it have a removeAttribute function on Document nodes;
						// we must handle all of these cases
						if ( deleteExpando ) {
							delete elem[ internalKey ];

						} else if ( typeof elem.removeAttribute !== strundefined ) {
							elem.removeAttribute( internalKey );

						} else {
							elem[ internalKey ] = null;
						}

						deletedIds.push( id );
					}
				}
			}
		}
	}
});

jQuery.fn.extend({
	text: function( value ) {
		return access( this, function( value ) {
			return value === undefined ?
				jQuery.text( this ) :
				this.empty().append( ( this[0] && this[0].ownerDocument || document ).createTextNode( value ) );
		}, null, value, arguments.length );
	},

	append: function() {
		return this.domManip( arguments, function( elem ) {
			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
				var target = manipulationTarget( this, elem );
				target.appendChild( elem );
			}
		});
	},

	prepend: function() {
		return this.domManip( arguments, function( elem ) {
			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
				var target = manipulationTarget( this, elem );
				target.insertBefore( elem, target.firstChild );
			}
		});
	},

	before: function() {
		return this.domManip( arguments, function( elem ) {
			if ( this.parentNode ) {
				this.parentNode.insertBefore( elem, this );
			}
		});
	},

	after: function() {
		return this.domManip( arguments, function( elem ) {
			if ( this.parentNode ) {
				this.parentNode.insertBefore( elem, this.nextSibling );
			}
		});
	},

	remove: function( selector, keepData /* Internal Use Only */ ) {
		var elem,
			elems = selector ? jQuery.filter( selector, this ) : this,
			i = 0;

		for ( ; (elem = elems[i]) != null; i++ ) {

			if ( !keepData && elem.nodeType === 1 ) {
				jQuery.cleanData( getAll( elem ) );
			}

			if ( elem.parentNode ) {
				if ( keepData && jQuery.contains( elem.ownerDocument, elem ) ) {
					setGlobalEval( getAll( elem, "script" ) );
				}
				elem.parentNode.removeChild( elem );
			}
		}

		return this;
	},

	empty: function() {
		var elem,
			i = 0;

		for ( ; (elem = this[i]) != null; i++ ) {
			// Remove element nodes and prevent memory leaks
			if ( elem.nodeType === 1 ) {
				jQuery.cleanData( getAll( elem, false ) );
			}

			// Remove any remaining nodes
			while ( elem.firstChild ) {
				elem.removeChild( elem.firstChild );
			}

			// If this is a select, ensure that it displays empty (#12336)
			// Support: IE<9
			if ( elem.options && jQuery.nodeName( elem, "select" ) ) {
				elem.options.length = 0;
			}
		}

		return this;
	},

	clone: function( dataAndEvents, deepDataAndEvents ) {
		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;

		return this.map(function() {
			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
		});
	},

	html: function( value ) {
		return access( this, function( value ) {
			var elem = this[ 0 ] || {},
				i = 0,
				l = this.length;

			if ( value === undefined ) {
				return elem.nodeType === 1 ?
					elem.innerHTML.replace( rinlinejQuery, "" ) :
					undefined;
			}

			// See if we can take a shortcut and just use innerHTML
			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
				( support.htmlSerialize || !rnoshimcache.test( value )  ) &&
				( support.leadingWhitespace || !rleadingWhitespace.test( value ) ) &&
				!wrapMap[ (rtagName.exec( value ) || [ "", "" ])[ 1 ].toLowerCase() ] ) {

				value = value.replace( rxhtmlTag, "<$1></$2>" );

				try {
					for (; i < l; i++ ) {
						// Remove element nodes and prevent memory leaks
						elem = this[i] || {};
						if ( elem.nodeType === 1 ) {
							jQuery.cleanData( getAll( elem, false ) );
							elem.innerHTML = value;
						}
					}

					elem = 0;

				// If using innerHTML throws an exception, use the fallback method
				} catch(e) {}
			}

			if ( elem ) {
				this.empty().append( value );
			}
		}, null, value, arguments.length );
	},

	replaceWith: function() {
		var arg = arguments[ 0 ];

		// Make the changes, replacing each context element with the new content
		this.domManip( arguments, function( elem ) {
			arg = this.parentNode;

			jQuery.cleanData( getAll( this ) );

			if ( arg ) {
				arg.replaceChild( elem, this );
			}
		});

		// Force removal if there was no new content (e.g., from empty arguments)
		return arg && (arg.length || arg.nodeType) ? this : this.remove();
	},

	detach: function( selector ) {
		return this.remove( selector, true );
	},

	domManip: function( args, callback ) {

		// Flatten any nested arrays
		args = concat.apply( [], args );

		var first, node, hasScripts,
			scripts, doc, fragment,
			i = 0,
			l = this.length,
			set = this,
			iNoClone = l - 1,
			value = args[0],
			isFunction = jQuery.isFunction( value );

		// We can't cloneNode fragments that contain checked, in WebKit
		if ( isFunction ||
				( l > 1 && typeof value === "string" &&
					!support.checkClone && rchecked.test( value ) ) ) {
			return this.each(function( index ) {
				var self = set.eq( index );
				if ( isFunction ) {
					args[0] = value.call( this, index, self.html() );
				}
				self.domManip( args, callback );
			});
		}

		if ( l ) {
			fragment = jQuery.buildFragment( args, this[ 0 ].ownerDocument, false, this );
			first = fragment.firstChild;

			if ( fragment.childNodes.length === 1 ) {
				fragment = first;
			}

			if ( first ) {
				scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
				hasScripts = scripts.length;

				// Use the original fragment for the last item instead of the first because it can end up
				// being emptied incorrectly in certain situations (#8070).
				for ( ; i < l; i++ ) {
					node = fragment;

					if ( i !== iNoClone ) {
						node = jQuery.clone( node, true, true );

						// Keep references to cloned scripts for later restoration
						if ( hasScripts ) {
							jQuery.merge( scripts, getAll( node, "script" ) );
						}
					}

					callback.call( this[i], node, i );
				}

				if ( hasScripts ) {
					doc = scripts[ scripts.length - 1 ].ownerDocument;

					// Reenable scripts
					jQuery.map( scripts, restoreScript );

					// Evaluate executable scripts on first document insertion
					for ( i = 0; i < hasScripts; i++ ) {
						node = scripts[ i ];
						if ( rscriptType.test( node.type || "" ) &&
							!jQuery._data( node, "globalEval" ) && jQuery.contains( doc, node ) ) {

							if ( node.src ) {
								// Optional AJAX dependency, but won't run scripts if not present
								if ( jQuery._evalUrl ) {
									jQuery._evalUrl( node.src );
								}
							} else {
								jQuery.globalEval( ( node.text || node.textContent || node.innerHTML || "" ).replace( rcleanScript, "" ) );
							}
						}
					}
				}

				// Fix #11809: Avoid leaking memory
				fragment = first = null;
			}
		}

		return this;
	}
});

jQuery.each({
	appendTo: "append",
	prependTo: "prepend",
	insertBefore: "before",
	insertAfter: "after",
	replaceAll: "replaceWith"
}, function( name, original ) {
	jQuery.fn[ name ] = function( selector ) {
		var elems,
			i = 0,
			ret = [],
			insert = jQuery( selector ),
			last = insert.length - 1;

		for ( ; i <= last; i++ ) {
			elems = i === last ? this : this.clone(true);
			jQuery( insert[i] )[ original ]( elems );

			// Modern browsers can apply jQuery collections as arrays, but oldIE needs a .get()
			push.apply( ret, elems.get() );
		}

		return this.pushStack( ret );
	};
});


var iframe,
	elemdisplay = {};

/**
 * Retrieve the actual display of a element
 * @param {String} name nodeName of the element
 * @param {Object} doc Document object
 */
// Called only from within defaultDisplay
function actualDisplay( name, doc ) {
	var elem = jQuery( doc.createElement( name ) ).appendTo( doc.body ),

		// getDefaultComputedStyle might be reliably used only on attached element
		display = window.getDefaultComputedStyle ?

			// Use of this method is a temporary fix (more like optmization) until something better comes along,
			// since it was removed from specification and supported only in FF
			window.getDefaultComputedStyle( elem[ 0 ] ).display : jQuery.css( elem[ 0 ], "display" );

	// We don't have any data stored on the element,
	// so use "detach" method as fast way to get rid of the element
	elem.detach();

	return display;
}

/**
 * Try to determine the default display value of an element
 * @param {String} nodeName
 */
function defaultDisplay( nodeName ) {
	var doc = document,
		display = elemdisplay[ nodeName ];

	if ( !display ) {
		display = actualDisplay( nodeName, doc );

		// If the simple way fails, read from inside an iframe
		if ( display === "none" || !display ) {

			// Use the already-created iframe if possible
			iframe = (iframe || jQuery( "<iframe frameborder='0' width='0' height='0'/>" )).appendTo( doc.documentElement );

			// Always write a new HTML skeleton so Webkit and Firefox don't choke on reuse
			doc = ( iframe[ 0 ].contentWindow || iframe[ 0 ].contentDocument ).document;

			// Support: IE
			doc.write();
			doc.close();

			display = actualDisplay( nodeName, doc );
			iframe.detach();
		}

		// Store the correct default display
		elemdisplay[ nodeName ] = display;
	}

	return display;
}


(function() {
	var a, shrinkWrapBlocksVal,
		div = document.createElement( "div" ),
		divReset =
			"-webkit-box-sizing:content-box;-moz-box-sizing:content-box;box-sizing:content-box;" +
			"display:block;padding:0;margin:0;border:0";

	// Setup
	div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
	a = div.getElementsByTagName( "a" )[ 0 ];

	a.style.cssText = "float:left;opacity:.5";

	// Make sure that element opacity exists
	// (IE uses filter instead)
	// Use a regex to work around a WebKit issue. See #5145
	support.opacity = /^0.5/.test( a.style.opacity );

	// Verify style float existence
	// (IE uses styleFloat instead of cssFloat)
	support.cssFloat = !!a.style.cssFloat;

	div.style.backgroundClip = "content-box";
	div.cloneNode( true ).style.backgroundClip = "";
	support.clearCloneStyle = div.style.backgroundClip === "content-box";

	// Null elements to avoid leaks in IE.
	a = div = null;

	support.shrinkWrapBlocks = function() {
		var body, container, div, containerStyles;

		if ( shrinkWrapBlocksVal == null ) {
			body = document.getElementsByTagName( "body" )[ 0 ];
			if ( !body ) {
				// Test fired too early or in an unsupported environment, exit.
				return;
			}

			containerStyles = "border:0;width:0;height:0;position:absolute;top:0;left:-9999px";
			container = document.createElement( "div" );
			div = document.createElement( "div" );

			body.appendChild( container ).appendChild( div );

			// Will be changed later if needed.
			shrinkWrapBlocksVal = false;

			if ( typeof div.style.zoom !== strundefined ) {
				// Support: IE6
				// Check if elements with layout shrink-wrap their children
				div.style.cssText = divReset + ";width:1px;padding:1px;zoom:1";
				div.innerHTML = "<div></div>";
				div.firstChild.style.width = "5px";
				shrinkWrapBlocksVal = div.offsetWidth !== 3;
			}

			body.removeChild( container );

			// Null elements to avoid leaks in IE.
			body = container = div = null;
		}

		return shrinkWrapBlocksVal;
	};

})();
var rmargin = (/^margin/);

var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );



var getStyles, curCSS,
	rposition = /^(top|right|bottom|left)$/;

if ( window.getComputedStyle ) {
	getStyles = function( elem ) {
		return elem.ownerDocument.defaultView.getComputedStyle( elem, null );
	};

	curCSS = function( elem, name, computed ) {
		var width, minWidth, maxWidth, ret,
			style = elem.style;

		computed = computed || getStyles( elem );

		// getPropertyValue is only needed for .css('filter') in IE9, see #12537
		ret = computed ? computed.getPropertyValue( name ) || computed[ name ] : undefined;

		if ( computed ) {

			if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
				ret = jQuery.style( elem, name );
			}

			// A tribute to the "awesome hack by Dean Edwards"
			// Chrome < 17 and Safari 5.0 uses "computed value" instead of "used value" for margin-right
			// Safari 5.1.7 (at least) returns percentage for a larger set of values, but width seems to be reliably pixels
			// this is against the CSSOM draft spec: http://dev.w3.org/csswg/cssom/#resolved-values
			if ( rnumnonpx.test( ret ) && rmargin.test( name ) ) {

				// Remember the original values
				width = style.width;
				minWidth = style.minWidth;
				maxWidth = style.maxWidth;

				// Put in the new values to get a computed value out
				style.minWidth = style.maxWidth = style.width = ret;
				ret = computed.width;

				// Revert the changed values
				style.width = width;
				style.minWidth = minWidth;
				style.maxWidth = maxWidth;
			}
		}

		// Support: IE
		// IE returns zIndex value as an integer.
		return ret === undefined ?
			ret :
			ret + "";
	};
} else if ( document.documentElement.currentStyle ) {
	getStyles = function( elem ) {
		return elem.currentStyle;
	};

	curCSS = function( elem, name, computed ) {
		var left, rs, rsLeft, ret,
			style = elem.style;

		computed = computed || getStyles( elem );
		ret = computed ? computed[ name ] : undefined;

		// Avoid setting ret to empty string here
		// so we don't default to auto
		if ( ret == null && style && style[ name ] ) {
			ret = style[ name ];
		}

		// From the awesome hack by Dean Edwards
		// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291

		// If we're not dealing with a regular pixel number
		// but a number that has a weird ending, we need to convert it to pixels
		// but not position css attributes, as those are proportional to the parent element instead
		// and we can't measure the parent instead because it might trigger a "stacking dolls" problem
		if ( rnumnonpx.test( ret ) && !rposition.test( name ) ) {

			// Remember the original values
			left = style.left;
			rs = elem.runtimeStyle;
			rsLeft = rs && rs.left;

			// Put in the new values to get a computed value out
			if ( rsLeft ) {
				rs.left = elem.currentStyle.left;
			}
			style.left = name === "fontSize" ? "1em" : ret;
			ret = style.pixelLeft + "px";

			// Revert the changed values
			style.left = left;
			if ( rsLeft ) {
				rs.left = rsLeft;
			}
		}

		// Support: IE
		// IE returns zIndex value as an integer.
		return ret === undefined ?
			ret :
			ret + "" || "auto";
	};
}




function addGetHookIf( conditionFn, hookFn ) {
	// Define the hook, we'll check on the first run if it's really needed.
	return {
		get: function() {
			var condition = conditionFn();

			if ( condition == null ) {
				// The test was not ready at this point; screw the hook this time
				// but check again when needed next time.
				return;
			}

			if ( condition ) {
				// Hook not needed (or it's not possible to use it due to missing dependency),
				// remove it.
				// Since there are no other hooks for marginRight, remove the whole object.
				delete this.get;
				return;
			}

			// Hook needed; redefine it so that the support test is not executed again.

			return (this.get = hookFn).apply( this, arguments );
		}
	};
}


(function() {
	var a, reliableHiddenOffsetsVal, boxSizingVal, boxSizingReliableVal,
		pixelPositionVal, reliableMarginRightVal,
		div = document.createElement( "div" ),
		containerStyles = "border:0;width:0;height:0;position:absolute;top:0;left:-9999px",
		divReset =
			"-webkit-box-sizing:content-box;-moz-box-sizing:content-box;box-sizing:content-box;" +
			"display:block;padding:0;margin:0;border:0";

	// Setup
	div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
	a = div.getElementsByTagName( "a" )[ 0 ];

	a.style.cssText = "float:left;opacity:.5";

	// Make sure that element opacity exists
	// (IE uses filter instead)
	// Use a regex to work around a WebKit issue. See #5145
	support.opacity = /^0.5/.test( a.style.opacity );

	// Verify style float existence
	// (IE uses styleFloat instead of cssFloat)
	support.cssFloat = !!a.style.cssFloat;

	div.style.backgroundClip = "content-box";
	div.cloneNode( true ).style.backgroundClip = "";
	support.clearCloneStyle = div.style.backgroundClip === "content-box";

	// Null elements to avoid leaks in IE.
	a = div = null;

	jQuery.extend(support, {
		reliableHiddenOffsets: function() {
			if ( reliableHiddenOffsetsVal != null ) {
				return reliableHiddenOffsetsVal;
			}

			var container, tds, isSupported,
				div = document.createElement( "div" ),
				body = document.getElementsByTagName( "body" )[ 0 ];

			if ( !body ) {
				// Return for frameset docs that don't have a body
				return;
			}

			// Setup
			div.setAttribute( "className", "t" );
			div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";

			container = document.createElement( "div" );
			container.style.cssText = containerStyles;

			body.appendChild( container ).appendChild( div );

			// Support: IE8
			// Check if table cells still have offsetWidth/Height when they are set
			// to display:none and there are still other visible table cells in a
			// table row; if so, offsetWidth/Height are not reliable for use when
			// determining if an element has been hidden directly using
			// display:none (it is still safe to use offsets if a parent element is
			// hidden; don safety goggles and see bug #4512 for more information).
			div.innerHTML = "<table><tr><td></td><td>t</td></tr></table>";
			tds = div.getElementsByTagName( "td" );
			tds[ 0 ].style.cssText = "padding:0;margin:0;border:0;display:none";
			isSupported = ( tds[ 0 ].offsetHeight === 0 );

			tds[ 0 ].style.display = "";
			tds[ 1 ].style.display = "none";

			// Support: IE8
			// Check if empty table cells still have offsetWidth/Height
			reliableHiddenOffsetsVal = isSupported && ( tds[ 0 ].offsetHeight === 0 );

			body.removeChild( container );

			// Null elements to avoid leaks in IE.
			div = body = null;

			return reliableHiddenOffsetsVal;
		},

		boxSizing: function() {
			if ( boxSizingVal == null ) {
				computeStyleTests();
			}
			return boxSizingVal;
		},

		boxSizingReliable: function() {
			if ( boxSizingReliableVal == null ) {
				computeStyleTests();
			}
			return boxSizingReliableVal;
		},

		pixelPosition: function() {
			if ( pixelPositionVal == null ) {
				computeStyleTests();
			}
			return pixelPositionVal;
		},

		reliableMarginRight: function() {
			var body, container, div, marginDiv;

			// Use window.getComputedStyle because jsdom on node.js will break without it.
			if ( reliableMarginRightVal == null && window.getComputedStyle ) {
				body = document.getElementsByTagName( "body" )[ 0 ];
				if ( !body ) {
					// Test fired too early or in an unsupported environment, exit.
					return;
				}

				container = document.createElement( "div" );
				div = document.createElement( "div" );
				container.style.cssText = containerStyles;

				body.appendChild( container ).appendChild( div );

				// Check if div with explicit width and no margin-right incorrectly
				// gets computed margin-right based on width of container. (#3333)
				// Fails in WebKit before Feb 2011 nightlies
				// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
				marginDiv = div.appendChild( document.createElement( "div" ) );
				marginDiv.style.cssText = div.style.cssText = divReset;
				marginDiv.style.marginRight = marginDiv.style.width = "0";
				div.style.width = "1px";

				reliableMarginRightVal =
					!parseFloat( ( window.getComputedStyle( marginDiv, null ) || {} ).marginRight );

				body.removeChild( container );
			}

			return reliableMarginRightVal;
		}
	});

	function computeStyleTests() {
		var container, div,
			body = document.getElementsByTagName( "body" )[ 0 ];

		if ( !body ) {
			// Test fired too early or in an unsupported environment, exit.
			return;
		}

		container = document.createElement( "div" );
		div = document.createElement( "div" );
		container.style.cssText = containerStyles;

		body.appendChild( container ).appendChild( div );

		div.style.cssText =
			"-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;" +
				"position:absolute;display:block;padding:1px;border:1px;width:4px;" +
				"margin-top:1%;top:1%";

		// Workaround failing boxSizing test due to offsetWidth returning wrong value
		// with some non-1 values of body zoom, ticket #13543
		jQuery.swap( body, body.style.zoom != null ? { zoom: 1 } : {}, function() {
			boxSizingVal = div.offsetWidth === 4;
		});

		// Will be changed later if needed.
		boxSizingReliableVal = true;
		pixelPositionVal = false;
		reliableMarginRightVal = true;

		// Use window.getComputedStyle because jsdom on node.js will break without it.
		if ( window.getComputedStyle ) {
			pixelPositionVal = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
			boxSizingReliableVal =
				( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";
		}

		body.removeChild( container );

		// Null elements to avoid leaks in IE.
		div = body = null;
	}

})();


// A method for quickly swapping in/out CSS properties to get correct calculations.
jQuery.swap = function( elem, options, callback, args ) {
	var ret, name,
		old = {};

	// Remember the old values, and insert the new ones
	for ( name in options ) {
		old[ name ] = elem.style[ name ];
		elem.style[ name ] = options[ name ];
	}

	ret = callback.apply( elem, args || [] );

	// Revert the old values
	for ( name in options ) {
		elem.style[ name ] = old[ name ];
	}

	return ret;
};


var
		ralpha = /alpha\([^)]*\)/i,
	ropacity = /opacity\s*=\s*([^)]*)/,

	// swappable if display is none or starts with table except "table", "table-cell", or "table-caption"
	// see here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
	rnumsplit = new RegExp( "^(" + pnum + ")(.*)$", "i" ),
	rrelNum = new RegExp( "^([+-])=(" + pnum + ")", "i" ),

	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
	cssNormalTransform = {
		letterSpacing: 0,
		fontWeight: 400
	},

	cssPrefixes = [ "Webkit", "O", "Moz", "ms" ];


// return a css property mapped to a potentially vendor prefixed property
function vendorPropName( style, name ) {

	// shortcut for names that are not vendor prefixed
	if ( name in style ) {
		return name;
	}

	// check for vendor prefixed names
	var capName = name.charAt(0).toUpperCase() + name.slice(1),
		origName = name,
		i = cssPrefixes.length;

	while ( i-- ) {
		name = cssPrefixes[ i ] + capName;
		if ( name in style ) {
			return name;
		}
	}

	return origName;
}

function showHide( elements, show ) {
	var display, elem, hidden,
		values = [],
		index = 0,
		length = elements.length;

	for ( ; index < length; index++ ) {
		elem = elements[ index ];
		if ( !elem.style ) {
			continue;
		}

		values[ index ] = jQuery._data( elem, "olddisplay" );
		display = elem.style.display;
		if ( show ) {
			// Reset the inline display of this element to learn if it is
			// being hidden by cascaded rules or not
			if ( !values[ index ] && display === "none" ) {
				elem.style.display = "";
			}

			// Set elements which have been overridden with display: none
			// in a stylesheet to whatever the default browser style is
			// for such an element
			if ( elem.style.display === "" && isHidden( elem ) ) {
				values[ index ] = jQuery._data( elem, "olddisplay", defaultDisplay(elem.nodeName) );
			}
		} else {

			if ( !values[ index ] ) {
				hidden = isHidden( elem );

				if ( display && display !== "none" || !hidden ) {
					jQuery._data( elem, "olddisplay", hidden ? display : jQuery.css( elem, "display" ) );
				}
			}
		}
	}

	// Set the display of most of the elements in a second loop
	// to avoid the constant reflow
	for ( index = 0; index < length; index++ ) {
		elem = elements[ index ];
		if ( !elem.style ) {
			continue;
		}
		if ( !show || elem.style.display === "none" || elem.style.display === "" ) {
			elem.style.display = show ? values[ index ] || "" : "none";
		}
	}

	return elements;
}

function setPositiveNumber( elem, value, subtract ) {
	var matches = rnumsplit.exec( value );
	return matches ?
		// Guard against undefined "subtract", e.g., when used as in cssHooks
		Math.max( 0, matches[ 1 ] - ( subtract || 0 ) ) + ( matches[ 2 ] || "px" ) :
		value;
}

function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
	var i = extra === ( isBorderBox ? "border" : "content" ) ?
		// If we already have the right measurement, avoid augmentation
		4 :
		// Otherwise initialize for horizontal or vertical properties
		name === "width" ? 1 : 0,

		val = 0;

	for ( ; i < 4; i += 2 ) {
		// both box models exclude margin, so add it if we want it
		if ( extra === "margin" ) {
			val += jQuery.css( elem, extra + cssExpand[ i ], true, styles );
		}

		if ( isBorderBox ) {
			// border-box includes padding, so remove it if we want content
			if ( extra === "content" ) {
				val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
			}

			// at this point, extra isn't border nor margin, so remove border
			if ( extra !== "margin" ) {
				val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
			}
		} else {
			// at this point, extra isn't content, so add padding
			val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );

			// at this point, extra isn't content nor padding, so add border
			if ( extra !== "padding" ) {
				val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
			}
		}
	}

	return val;
}

function getWidthOrHeight( elem, name, extra ) {

	// Start with offset property, which is equivalent to the border-box value
	var valueIsBorderBox = true,
		val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
		styles = getStyles( elem ),
		isBorderBox = support.boxSizing() && jQuery.css( elem, "boxSizing", false, styles ) === "border-box";

	// some non-html elements return undefined for offsetWidth, so check for null/undefined
	// svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285
	// MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668
	if ( val <= 0 || val == null ) {
		// Fall back to computed then uncomputed css if necessary
		val = curCSS( elem, name, styles );
		if ( val < 0 || val == null ) {
			val = elem.style[ name ];
		}

		// Computed unit is not pixels. Stop here and return.
		if ( rnumnonpx.test(val) ) {
			return val;
		}

		// we need the check for style in case a browser which returns unreliable values
		// for getComputedStyle silently falls back to the reliable elem.style
		valueIsBorderBox = isBorderBox && ( support.boxSizingReliable() || val === elem.style[ name ] );

		// Normalize "", auto, and prepare for extra
		val = parseFloat( val ) || 0;
	}

	// use the active box-sizing model to add/subtract irrelevant styles
	return ( val +
		augmentWidthOrHeight(
			elem,
			name,
			extra || ( isBorderBox ? "border" : "content" ),
			valueIsBorderBox,
			styles
		)
	) + "px";
}

jQuery.extend({
	// Add in style property hooks for overriding the default
	// behavior of getting and setting a style property
	cssHooks: {
		opacity: {
			get: function( elem, computed ) {
				if ( computed ) {
					// We should always get a number back from opacity
					var ret = curCSS( elem, "opacity" );
					return ret === "" ? "1" : ret;
				}
			}
		}
	},

	// Don't automatically add "px" to these possibly-unitless properties
	cssNumber: {
		"columnCount": true,
		"fillOpacity": true,
		"fontWeight": true,
		"lineHeight": true,
		"opacity": true,
		"order": true,
		"orphans": true,
		"widows": true,
		"zIndex": true,
		"zoom": true
	},

	// Add in properties whose names you wish to fix before
	// setting or getting the value
	cssProps: {
		// normalize float css property
		"float": support.cssFloat ? "cssFloat" : "styleFloat"
	},

	// Get and set the style property on a DOM Node
	style: function( elem, name, value, extra ) {
		// Don't set styles on text and comment nodes
		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
			return;
		}

		// Make sure that we're working with the right name
		var ret, type, hooks,
			origName = jQuery.camelCase( name ),
			style = elem.style;

		name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( style, origName ) );

		// gets hook for the prefixed version
		// followed by the unprefixed version
		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

		// Check if we're setting a value
		if ( value !== undefined ) {
			type = typeof value;

			// convert relative number strings (+= or -=) to relative numbers. #7345
			if ( type === "string" && (ret = rrelNum.exec( value )) ) {
				value = ( ret[1] + 1 ) * ret[2] + parseFloat( jQuery.css( elem, name ) );
				// Fixes bug #9237
				type = "number";
			}

			// Make sure that null and NaN values aren't set. See: #7116
			if ( value == null || value !== value ) {
				return;
			}

			// If a number was passed in, add 'px' to the (except for certain CSS properties)
			if ( type === "number" && !jQuery.cssNumber[ origName ] ) {
				value += "px";
			}

			// Fixes #8908, it can be done more correctly by specifing setters in cssHooks,
			// but it would mean to define eight (for every problematic property) identical functions
			if ( !support.clearCloneStyle && value === "" && name.indexOf("background") === 0 ) {
				style[ name ] = "inherit";
			}

			// If a hook was provided, use that value, otherwise just set the specified value
			if ( !hooks || !("set" in hooks) || (value = hooks.set( elem, value, extra )) !== undefined ) {

				// Support: IE
				// Swallow errors from 'invalid' CSS values (#5509)
				try {
					// Support: Chrome, Safari
					// Setting style to blank string required to delete "style: x !important;"
					style[ name ] = "";
					style[ name ] = value;
				} catch(e) {}
			}

		} else {
			// If a hook was provided get the non-computed value from there
			if ( hooks && "get" in hooks && (ret = hooks.get( elem, false, extra )) !== undefined ) {
				return ret;
			}

			// Otherwise just get the value from the style object
			return style[ name ];
		}
	},

	css: function( elem, name, extra, styles ) {
		var num, val, hooks,
			origName = jQuery.camelCase( name );

		// Make sure that we're working with the right name
		name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( elem.style, origName ) );

		// gets hook for the prefixed version
		// followed by the unprefixed version
		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

		// If a hook was provided get the computed value from there
		if ( hooks && "get" in hooks ) {
			val = hooks.get( elem, true, extra );
		}

		// Otherwise, if a way to get the computed value exists, use that
		if ( val === undefined ) {
			val = curCSS( elem, name, styles );
		}

		//convert "normal" to computed value
		if ( val === "normal" && name in cssNormalTransform ) {
			val = cssNormalTransform[ name ];
		}

		// Return, converting to number if forced or a qualifier was provided and val looks numeric
		if ( extra === "" || extra ) {
			num = parseFloat( val );
			return extra === true || jQuery.isNumeric( num ) ? num || 0 : val;
		}
		return val;
	}
});

jQuery.each([ "height", "width" ], function( i, name ) {
	jQuery.cssHooks[ name ] = {
		get: function( elem, computed, extra ) {
			if ( computed ) {
				// certain elements can have dimension info if we invisibly show them
				// however, it must have a current display style that would benefit from this
				return elem.offsetWidth === 0 && rdisplayswap.test( jQuery.css( elem, "display" ) ) ?
					jQuery.swap( elem, cssShow, function() {
						return getWidthOrHeight( elem, name, extra );
					}) :
					getWidthOrHeight( elem, name, extra );
			}
		},

		set: function( elem, value, extra ) {
			var styles = extra && getStyles( elem );
			return setPositiveNumber( elem, value, extra ?
				augmentWidthOrHeight(
					elem,
					name,
					extra,
					support.boxSizing() && jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
					styles
				) : 0
			);
		}
	};
});

if ( !support.opacity ) {
	jQuery.cssHooks.opacity = {
		get: function( elem, computed ) {
			// IE uses filters for opacity
			return ropacity.test( (computed && elem.currentStyle ? elem.currentStyle.filter : elem.style.filter) || "" ) ?
				( 0.01 * parseFloat( RegExp.$1 ) ) + "" :
				computed ? "1" : "";
		},

		set: function( elem, value ) {
			var style = elem.style,
				currentStyle = elem.currentStyle,
				opacity = jQuery.isNumeric( value ) ? "alpha(opacity=" + value * 100 + ")" : "",
				filter = currentStyle && currentStyle.filter || style.filter || "";

			// IE has trouble with opacity if it does not have layout
			// Force it by setting the zoom level
			style.zoom = 1;

			// if setting opacity to 1, and no other filters exist - attempt to remove filter attribute #6652
			// if value === "", then remove inline opacity #12685
			if ( ( value >= 1 || value === "" ) &&
					jQuery.trim( filter.replace( ralpha, "" ) ) === "" &&
					style.removeAttribute ) {

				// Setting style.filter to null, "" & " " still leave "filter:" in the cssText
				// if "filter:" is present at all, clearType is disabled, we want to avoid this
				// style.removeAttribute is IE Only, but so apparently is this code path...
				style.removeAttribute( "filter" );

				// if there is no filter style applied in a css rule or unset inline opacity, we are done
				if ( value === "" || currentStyle && !currentStyle.filter ) {
					return;
				}
			}

			// otherwise, set new filter values
			style.filter = ralpha.test( filter ) ?
				filter.replace( ralpha, opacity ) :
				filter + " " + opacity;
		}
	};
}

jQuery.cssHooks.marginRight = addGetHookIf( support.reliableMarginRight,
	function( elem, computed ) {
		if ( computed ) {
			// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
			// Work around by temporarily setting element display to inline-block
			return jQuery.swap( elem, { "display": "inline-block" },
				curCSS, [ elem, "marginRight" ] );
		}
	}
);

// These hooks are used by animate to expand properties
jQuery.each({
	margin: "",
	padding: "",
	border: "Width"
}, function( prefix, suffix ) {
	jQuery.cssHooks[ prefix + suffix ] = {
		expand: function( value ) {
			var i = 0,
				expanded = {},

				// assumes a single number if not a string
				parts = typeof value === "string" ? value.split(" ") : [ value ];

			for ( ; i < 4; i++ ) {
				expanded[ prefix + cssExpand[ i ] + suffix ] =
					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
			}

			return expanded;
		}
	};

	if ( !rmargin.test( prefix ) ) {
		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
	}
});

jQuery.fn.extend({
	css: function( name, value ) {
		return access( this, function( elem, name, value ) {
			var styles, len,
				map = {},
				i = 0;

			if ( jQuery.isArray( name ) ) {
				styles = getStyles( elem );
				len = name.length;

				for ( ; i < len; i++ ) {
					map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
				}

				return map;
			}

			return value !== undefined ?
				jQuery.style( elem, name, value ) :
				jQuery.css( elem, name );
		}, name, value, arguments.length > 1 );
	},
	show: function() {
		return showHide( this, true );
	},
	hide: function() {
		return showHide( this );
	},
	toggle: function( state ) {
		if ( typeof state === "boolean" ) {
			return state ? this.show() : this.hide();
		}

		return this.each(function() {
			if ( isHidden( this ) ) {
				jQuery( this ).show();
			} else {
				jQuery( this ).hide();
			}
		});
	}
});


function Tween( elem, options, prop, end, easing ) {
	return new Tween.prototype.init( elem, options, prop, end, easing );
}
jQuery.Tween = Tween;

Tween.prototype = {
	constructor: Tween,
	init: function( elem, options, prop, end, easing, unit ) {
		this.elem = elem;
		this.prop = prop;
		this.easing = easing || "swing";
		this.options = options;
		this.start = this.now = this.cur();
		this.end = end;
		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
	},
	cur: function() {
		var hooks = Tween.propHooks[ this.prop ];

		return hooks && hooks.get ?
			hooks.get( this ) :
			Tween.propHooks._default.get( this );
	},
	run: function( percent ) {
		var eased,
			hooks = Tween.propHooks[ this.prop ];

		if ( this.options.duration ) {
			this.pos = eased = jQuery.easing[ this.easing ](
				percent, this.options.duration * percent, 0, 1, this.options.duration
			);
		} else {
			this.pos = eased = percent;
		}
		this.now = ( this.end - this.start ) * eased + this.start;

		if ( this.options.step ) {
			this.options.step.call( this.elem, this.now, this );
		}

		if ( hooks && hooks.set ) {
			hooks.set( this );
		} else {
			Tween.propHooks._default.set( this );
		}
		return this;
	}
};

Tween.prototype.init.prototype = Tween.prototype;

Tween.propHooks = {
	_default: {
		get: function( tween ) {
			var result;

			if ( tween.elem[ tween.prop ] != null &&
				(!tween.elem.style || tween.elem.style[ tween.prop ] == null) ) {
				return tween.elem[ tween.prop ];
			}

			// passing an empty string as a 3rd parameter to .css will automatically
			// attempt a parseFloat and fallback to a string if the parse fails
			// so, simple values such as "10px" are parsed to Float.
			// complex values such as "rotate(1rad)" are returned as is.
			result = jQuery.css( tween.elem, tween.prop, "" );
			// Empty strings, null, undefined and "auto" are converted to 0.
			return !result || result === "auto" ? 0 : result;
		},
		set: function( tween ) {
			// use step hook for back compat - use cssHook if its there - use .style if its
			// available and use plain properties where available
			if ( jQuery.fx.step[ tween.prop ] ) {
				jQuery.fx.step[ tween.prop ]( tween );
			} else if ( tween.elem.style && ( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null || jQuery.cssHooks[ tween.prop ] ) ) {
				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
			} else {
				tween.elem[ tween.prop ] = tween.now;
			}
		}
	}
};

// Support: IE <=9
// Panic based approach to setting things on disconnected nodes

Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
	set: function( tween ) {
		if ( tween.elem.nodeType && tween.elem.parentNode ) {
			tween.elem[ tween.prop ] = tween.now;
		}
	}
};

jQuery.easing = {
	linear: function( p ) {
		return p;
	},
	swing: function( p ) {
		return 0.5 - Math.cos( p * Math.PI ) / 2;
	}
};

jQuery.fx = Tween.prototype.init;

// Back Compat <1.8 extension point
jQuery.fx.step = {};




var
	fxNow, timerId,
	rfxtypes = /^(?:toggle|show|hide)$/,
	rfxnum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ),
	rrun = /queueHooks$/,
	animationPrefilters = [ defaultPrefilter ],
	tweeners = {
		"*": [ function( prop, value ) {
			var tween = this.createTween( prop, value ),
				target = tween.cur(),
				parts = rfxnum.exec( value ),
				unit = parts && parts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),

				// Starting value computation is required for potential unit mismatches
				start = ( jQuery.cssNumber[ prop ] || unit !== "px" && +target ) &&
					rfxnum.exec( jQuery.css( tween.elem, prop ) ),
				scale = 1,
				maxIterations = 20;

			if ( start && start[ 3 ] !== unit ) {
				// Trust units reported by jQuery.css
				unit = unit || start[ 3 ];

				// Make sure we update the tween properties later on
				parts = parts || [];

				// Iteratively approximate from a nonzero starting point
				start = +target || 1;

				do {
					// If previous iteration zeroed out, double until we get *something*
					// Use a string for doubling factor so we don't accidentally see scale as unchanged below
					scale = scale || ".5";

					// Adjust and apply
					start = start / scale;
					jQuery.style( tween.elem, prop, start + unit );

				// Update scale, tolerating zero or NaN from tween.cur()
				// And breaking the loop if scale is unchanged or perfect, or if we've just had enough
				} while ( scale !== (scale = tween.cur() / target) && scale !== 1 && --maxIterations );
			}

			// Update tween properties
			if ( parts ) {
				start = tween.start = +start || +target || 0;
				tween.unit = unit;
				// If a +=/-= token was provided, we're doing a relative animation
				tween.end = parts[ 1 ] ?
					start + ( parts[ 1 ] + 1 ) * parts[ 2 ] :
					+parts[ 2 ];
			}

			return tween;
		} ]
	};

// Animations created synchronously will run synchronously
function createFxNow() {
	setTimeout(function() {
		fxNow = undefined;
	});
	return ( fxNow = jQuery.now() );
}

// Generate parameters to create a standard animation
function genFx( type, includeWidth ) {
	var which,
		attrs = { height: type },
		i = 0;

	// if we include width, step value is 1 to do all cssExpand values,
	// if we don't include width, step value is 2 to skip over Left and Right
	includeWidth = includeWidth ? 1 : 0;
	for ( ; i < 4 ; i += 2 - includeWidth ) {
		which = cssExpand[ i ];
		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
	}

	if ( includeWidth ) {
		attrs.opacity = attrs.width = type;
	}

	return attrs;
}

function createTween( value, prop, animation ) {
	var tween,
		collection = ( tweeners[ prop ] || [] ).concat( tweeners[ "*" ] ),
		index = 0,
		length = collection.length;
	for ( ; index < length; index++ ) {
		if ( (tween = collection[ index ].call( animation, prop, value )) ) {

			// we're done with this property
			return tween;
		}
	}
}

function defaultPrefilter( elem, props, opts ) {
	/* jshint validthis: true */
	var prop, value, toggle, tween, hooks, oldfire, display, dDisplay,
		anim = this,
		orig = {},
		style = elem.style,
		hidden = elem.nodeType && isHidden( elem ),
		dataShow = jQuery._data( elem, "fxshow" );

	// handle queue: false promises
	if ( !opts.queue ) {
		hooks = jQuery._queueHooks( elem, "fx" );
		if ( hooks.unqueued == null ) {
			hooks.unqueued = 0;
			oldfire = hooks.empty.fire;
			hooks.empty.fire = function() {
				if ( !hooks.unqueued ) {
					oldfire();
				}
			};
		}
		hooks.unqueued++;

		anim.always(function() {
			// doing this makes sure that the complete handler will be called
			// before this completes
			anim.always(function() {
				hooks.unqueued--;
				if ( !jQuery.queue( elem, "fx" ).length ) {
					hooks.empty.fire();
				}
			});
		});
	}

	// height/width overflow pass
	if ( elem.nodeType === 1 && ( "height" in props || "width" in props ) ) {
		// Make sure that nothing sneaks out
		// Record all 3 overflow attributes because IE does not
		// change the overflow attribute when overflowX and
		// overflowY are set to the same value
		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];

		// Set display property to inline-block for height/width
		// animations on inline elements that are having width/height animated
		display = jQuery.css( elem, "display" );
		dDisplay = defaultDisplay( elem.nodeName );
		if ( display === "none" ) {
			display = dDisplay;
		}
		if ( display === "inline" &&
				jQuery.css( elem, "float" ) === "none" ) {

			// inline-level elements accept inline-block;
			// block-level elements need to be inline with layout
			if ( !support.inlineBlockNeedsLayout || dDisplay === "inline" ) {
				style.display = "inline-block";
			} else {
				style.zoom = 1;
			}
		}
	}

	if ( opts.overflow ) {
		style.overflow = "hidden";
		if ( !support.shrinkWrapBlocks() ) {
			anim.always(function() {
				style.overflow = opts.overflow[ 0 ];
				style.overflowX = opts.overflow[ 1 ];
				style.overflowY = opts.overflow[ 2 ];
			});
		}
	}

	// show/hide pass
	for ( prop in props ) {
		value = props[ prop ];
		if ( rfxtypes.exec( value ) ) {
			delete props[ prop ];
			toggle = toggle || value === "toggle";
			if ( value === ( hidden ? "hide" : "show" ) ) {

				// If there is dataShow left over from a stopped hide or show and we are going to proceed with show, we should pretend to be hidden
				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
					hidden = true;
				} else {
					continue;
				}
			}
			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );
		}
	}

	if ( !jQuery.isEmptyObject( orig ) ) {
		if ( dataShow ) {
			if ( "hidden" in dataShow ) {
				hidden = dataShow.hidden;
			}
		} else {
			dataShow = jQuery._data( elem, "fxshow", {} );
		}

		// store state if its toggle - enables .stop().toggle() to "reverse"
		if ( toggle ) {
			dataShow.hidden = !hidden;
		}
		if ( hidden ) {
			jQuery( elem ).show();
		} else {
			anim.done(function() {
				jQuery( elem ).hide();
			});
		}
		anim.done(function() {
			var prop;
			jQuery._removeData( elem, "fxshow" );
			for ( prop in orig ) {
				jQuery.style( elem, prop, orig[ prop ] );
			}
		});
		for ( prop in orig ) {
			tween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );

			if ( !( prop in dataShow ) ) {
				dataShow[ prop ] = tween.start;
				if ( hidden ) {
					tween.end = tween.start;
					tween.start = prop === "width" || prop === "height" ? 1 : 0;
				}
			}
		}
	}
}

function propFilter( props, specialEasing ) {
	var index, name, easing, value, hooks;

	// camelCase, specialEasing and expand cssHook pass
	for ( index in props ) {
		name = jQuery.camelCase( index );
		easing = specialEasing[ name ];
		value = props[ index ];
		if ( jQuery.isArray( value ) ) {
			easing = value[ 1 ];
			value = props[ index ] = value[ 0 ];
		}

		if ( index !== name ) {
			props[ name ] = value;
			delete props[ index ];
		}

		hooks = jQuery.cssHooks[ name ];
		if ( hooks && "expand" in hooks ) {
			value = hooks.expand( value );
			delete props[ name ];

			// not quite $.extend, this wont overwrite keys already present.
			// also - reusing 'index' from above because we have the correct "name"
			for ( index in value ) {
				if ( !( index in props ) ) {
					props[ index ] = value[ index ];
					specialEasing[ index ] = easing;
				}
			}
		} else {
			specialEasing[ name ] = easing;
		}
	}
}

function Animation( elem, properties, options ) {
	var result,
		stopped,
		index = 0,
		length = animationPrefilters.length,
		deferred = jQuery.Deferred().always( function() {
			// don't match elem in the :animated selector
			delete tick.elem;
		}),
		tick = function() {
			if ( stopped ) {
				return false;
			}
			var currentTime = fxNow || createFxNow(),
				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),
				// archaic crash bug won't allow us to use 1 - ( 0.5 || 0 ) (#12497)
				temp = remaining / animation.duration || 0,
				percent = 1 - temp,
				index = 0,
				length = animation.tweens.length;

			for ( ; index < length ; index++ ) {
				animation.tweens[ index ].run( percent );
			}

			deferred.notifyWith( elem, [ animation, percent, remaining ]);

			if ( percent < 1 && length ) {
				return remaining;
			} else {
				deferred.resolveWith( elem, [ animation ] );
				return false;
			}
		},
		animation = deferred.promise({
			elem: elem,
			props: jQuery.extend( {}, properties ),
			opts: jQuery.extend( true, { specialEasing: {} }, options ),
			originalProperties: properties,
			originalOptions: options,
			startTime: fxNow || createFxNow(),
			duration: options.duration,
			tweens: [],
			createTween: function( prop, end ) {
				var tween = jQuery.Tween( elem, animation.opts, prop, end,
						animation.opts.specialEasing[ prop ] || animation.opts.easing );
				animation.tweens.push( tween );
				return tween;
			},
			stop: function( gotoEnd ) {
				var index = 0,
					// if we are going to the end, we want to run all the tweens
					// otherwise we skip this part
					length = gotoEnd ? animation.tweens.length : 0;
				if ( stopped ) {
					return this;
				}
				stopped = true;
				for ( ; index < length ; index++ ) {
					animation.tweens[ index ].run( 1 );
				}

				// resolve when we played the last frame
				// otherwise, reject
				if ( gotoEnd ) {
					deferred.resolveWith( elem, [ animation, gotoEnd ] );
				} else {
					deferred.rejectWith( elem, [ animation, gotoEnd ] );
				}
				return this;
			}
		}),
		props = animation.props;

	propFilter( props, animation.opts.specialEasing );

	for ( ; index < length ; index++ ) {
		result = animationPrefilters[ index ].call( animation, elem, props, animation.opts );
		if ( result ) {
			return result;
		}
	}

	jQuery.map( props, createTween, animation );

	if ( jQuery.isFunction( animation.opts.start ) ) {
		animation.opts.start.call( elem, animation );
	}

	jQuery.fx.timer(
		jQuery.extend( tick, {
			elem: elem,
			anim: animation,
			queue: animation.opts.queue
		})
	);

	// attach callbacks from options
	return animation.progress( animation.opts.progress )
		.done( animation.opts.done, animation.opts.complete )
		.fail( animation.opts.fail )
		.always( animation.opts.always );
}

jQuery.Animation = jQuery.extend( Animation, {
	tweener: function( props, callback ) {
		if ( jQuery.isFunction( props ) ) {
			callback = props;
			props = [ "*" ];
		} else {
			props = props.split(" ");
		}

		var prop,
			index = 0,
			length = props.length;

		for ( ; index < length ; index++ ) {
			prop = props[ index ];
			tweeners[ prop ] = tweeners[ prop ] || [];
			tweeners[ prop ].unshift( callback );
		}
	},

	prefilter: function( callback, prepend ) {
		if ( prepend ) {
			animationPrefilters.unshift( callback );
		} else {
			animationPrefilters.push( callback );
		}
	}
});

jQuery.speed = function( speed, easing, fn ) {
	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
		complete: fn || !fn && easing ||
			jQuery.isFunction( speed ) && speed,
		duration: speed,
		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
	};

	opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
		opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default;

	// normalize opt.queue - true/undefined/null -> "fx"
	if ( opt.queue == null || opt.queue === true ) {
		opt.queue = "fx";
	}

	// Queueing
	opt.old = opt.complete;

	opt.complete = function() {
		if ( jQuery.isFunction( opt.old ) ) {
			opt.old.call( this );
		}

		if ( opt.queue ) {
			jQuery.dequeue( this, opt.queue );
		}
	};

	return opt;
};

jQuery.fn.extend({
	fadeTo: function( speed, to, easing, callback ) {

		// show any hidden elements after setting opacity to 0
		return this.filter( isHidden ).css( "opacity", 0 ).show()

			// animate to the value specified
			.end().animate({ opacity: to }, speed, easing, callback );
	},
	animate: function( prop, speed, easing, callback ) {
		var empty = jQuery.isEmptyObject( prop ),
			optall = jQuery.speed( speed, easing, callback ),
			doAnimation = function() {
				// Operate on a copy of prop so per-property easing won't be lost
				var anim = Animation( this, jQuery.extend( {}, prop ), optall );

				// Empty animations, or finishing resolves immediately
				if ( empty || jQuery._data( this, "finish" ) ) {
					anim.stop( true );
				}
			};
			doAnimation.finish = doAnimation;

		return empty || optall.queue === false ?
			this.each( doAnimation ) :
			this.queue( optall.queue, doAnimation );
	},
	stop: function( type, clearQueue, gotoEnd ) {
		var stopQueue = function( hooks ) {
			var stop = hooks.stop;
			delete hooks.stop;
			stop( gotoEnd );
		};

		if ( typeof type !== "string" ) {
			gotoEnd = clearQueue;
			clearQueue = type;
			type = undefined;
		}
		if ( clearQueue && type !== false ) {
			this.queue( type || "fx", [] );
		}

		return this.each(function() {
			var dequeue = true,
				index = type != null && type + "queueHooks",
				timers = jQuery.timers,
				data = jQuery._data( this );

			if ( index ) {
				if ( data[ index ] && data[ index ].stop ) {
					stopQueue( data[ index ] );
				}
			} else {
				for ( index in data ) {
					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
						stopQueue( data[ index ] );
					}
				}
			}

			for ( index = timers.length; index--; ) {
				if ( timers[ index ].elem === this && (type == null || timers[ index ].queue === type) ) {
					timers[ index ].anim.stop( gotoEnd );
					dequeue = false;
					timers.splice( index, 1 );
				}
			}

			// start the next in the queue if the last step wasn't forced
			// timers currently will call their complete callbacks, which will dequeue
			// but only if they were gotoEnd
			if ( dequeue || !gotoEnd ) {
				jQuery.dequeue( this, type );
			}
		});
	},
	finish: function( type ) {
		if ( type !== false ) {
			type = type || "fx";
		}
		return this.each(function() {
			var index,
				data = jQuery._data( this ),
				queue = data[ type + "queue" ],
				hooks = data[ type + "queueHooks" ],
				timers = jQuery.timers,
				length = queue ? queue.length : 0;

			// enable finishing flag on private data
			data.finish = true;

			// empty the queue first
			jQuery.queue( this, type, [] );

			if ( hooks && hooks.stop ) {
				hooks.stop.call( this, true );
			}

			// look for any active animations, and finish them
			for ( index = timers.length; index--; ) {
				if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
					timers[ index ].anim.stop( true );
					timers.splice( index, 1 );
				}
			}

			// look for any animations in the old queue and finish them
			for ( index = 0; index < length; index++ ) {
				if ( queue[ index ] && queue[ index ].finish ) {
					queue[ index ].finish.call( this );
				}
			}

			// turn off finishing flag
			delete data.finish;
		});
	}
});

jQuery.each([ "toggle", "show", "hide" ], function( i, name ) {
	var cssFn = jQuery.fn[ name ];
	jQuery.fn[ name ] = function( speed, easing, callback ) {
		return speed == null || typeof speed === "boolean" ?
			cssFn.apply( this, arguments ) :
			this.animate( genFx( name, true ), speed, easing, callback );
	};
});

// Generate shortcuts for custom animations
jQuery.each({
	slideDown: genFx("show"),
	slideUp: genFx("hide"),
	slideToggle: genFx("toggle"),
	fadeIn: { opacity: "show" },
	fadeOut: { opacity: "hide" },
	fadeToggle: { opacity: "toggle" }
}, function( name, props ) {
	jQuery.fn[ name ] = function( speed, easing, callback ) {
		return this.animate( props, speed, easing, callback );
	};
});

jQuery.timers = [];
jQuery.fx.tick = function() {
	var timer,
		timers = jQuery.timers,
		i = 0;

	fxNow = jQuery.now();

	for ( ; i < timers.length; i++ ) {
		timer = timers[ i ];
		// Checks the timer has not already been removed
		if ( !timer() && timers[ i ] === timer ) {
			timers.splice( i--, 1 );
		}
	}

	if ( !timers.length ) {
		jQuery.fx.stop();
	}
	fxNow = undefined;
};

jQuery.fx.timer = function( timer ) {
	jQuery.timers.push( timer );
	if ( timer() ) {
		jQuery.fx.start();
	} else {
		jQuery.timers.pop();
	}
};

jQuery.fx.interval = 13;

jQuery.fx.start = function() {
	if ( !timerId ) {
		timerId = setInterval( jQuery.fx.tick, jQuery.fx.interval );
	}
};

jQuery.fx.stop = function() {
	clearInterval( timerId );
	timerId = null;
};

jQuery.fx.speeds = {
	slow: 600,
	fast: 200,
	// Default speed
	_default: 400
};


// Based off of the plugin by Clint Helfers, with permission.
// http://blindsignals.com/index.php/2009/07/jquery-delay/
jQuery.fn.delay = function( time, type ) {
	time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
	type = type || "fx";

	return this.queue( type, function( next, hooks ) {
		var timeout = setTimeout( next, time );
		hooks.stop = function() {
			clearTimeout( timeout );
		};
	});
};


(function() {
	var a, input, select, opt,
		div = document.createElement("div" );

	// Setup
	div.setAttribute( "className", "t" );
	div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
	a = div.getElementsByTagName("a")[ 0 ];

	// First batch of tests.
	select = document.createElement("select");
	opt = select.appendChild( document.createElement("option") );
	input = div.getElementsByTagName("input")[ 0 ];

	a.style.cssText = "top:1px";

	// Test setAttribute on camelCase class. If it works, we need attrFixes when doing get/setAttribute (ie6/7)
	support.getSetAttribute = div.className !== "t";

	// Get the style information from getAttribute
	// (IE uses .cssText instead)
	support.style = /top/.test( a.getAttribute("style") );

	// Make sure that URLs aren't manipulated
	// (IE normalizes it by default)
	support.hrefNormalized = a.getAttribute("href") === "/a";

	// Check the default checkbox/radio value ("" on WebKit; "on" elsewhere)
	support.checkOn = !!input.value;

	// Make sure that a selected-by-default option has a working selected property.
	// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
	support.optSelected = opt.selected;

	// Tests for enctype support on a form (#6743)
	support.enctype = !!document.createElement("form").enctype;

	// Make sure that the options inside disabled selects aren't marked as disabled
	// (WebKit marks them as disabled)
	select.disabled = true;
	support.optDisabled = !opt.disabled;

	// Support: IE8 only
	// Check if we can trust getAttribute("value")
	input = document.createElement( "input" );
	input.setAttribute( "value", "" );
	support.input = input.getAttribute( "value" ) === "";

	// Check if an input maintains its value after becoming a radio
	input.value = "t";
	input.setAttribute( "type", "radio" );
	support.radioValue = input.value === "t";

	// Null elements to avoid leaks in IE.
	a = input = select = opt = div = null;
})();


var rreturn = /\r/g;

jQuery.fn.extend({
	val: function( value ) {
		var hooks, ret, isFunction,
			elem = this[0];

		if ( !arguments.length ) {
			if ( elem ) {
				hooks = jQuery.valHooks[ elem.type ] || jQuery.valHooks[ elem.nodeName.toLowerCase() ];

				if ( hooks && "get" in hooks && (ret = hooks.get( elem, "value" )) !== undefined ) {
					return ret;
				}

				ret = elem.value;

				return typeof ret === "string" ?
					// handle most common string cases
					ret.replace(rreturn, "") :
					// handle cases where value is null/undef or number
					ret == null ? "" : ret;
			}

			return;
		}

		isFunction = jQuery.isFunction( value );

		return this.each(function( i ) {
			var val;

			if ( this.nodeType !== 1 ) {
				return;
			}

			if ( isFunction ) {
				val = value.call( this, i, jQuery( this ).val() );
			} else {
				val = value;
			}

			// Treat null/undefined as ""; convert numbers to string
			if ( val == null ) {
				val = "";
			} else if ( typeof val === "number" ) {
				val += "";
			} else if ( jQuery.isArray( val ) ) {
				val = jQuery.map( val, function( value ) {
					return value == null ? "" : value + "";
				});
			}

			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];

			// If set returns undefined, fall back to normal setting
			if ( !hooks || !("set" in hooks) || hooks.set( this, val, "value" ) === undefined ) {
				this.value = val;
			}
		});
	}
});

jQuery.extend({
	valHooks: {
		option: {
			get: function( elem ) {
				var val = jQuery.find.attr( elem, "value" );
				return val != null ?
					val :
					jQuery.text( elem );
			}
		},
		select: {
			get: function( elem ) {
				var value, option,
					options = elem.options,
					index = elem.selectedIndex,
					one = elem.type === "select-one" || index < 0,
					values = one ? null : [],
					max = one ? index + 1 : options.length,
					i = index < 0 ?
						max :
						one ? index : 0;

				// Loop through all the selected options
				for ( ; i < max; i++ ) {
					option = options[ i ];

					// oldIE doesn't update selected after form reset (#2551)
					if ( ( option.selected || i === index ) &&
							// Don't return options that are disabled or in a disabled optgroup
							( support.optDisabled ? !option.disabled : option.getAttribute("disabled") === null ) &&
							( !option.parentNode.disabled || !jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {

						// Get the specific value for the option
						value = jQuery( option ).val();

						// We don't need an array for one selects
						if ( one ) {
							return value;
						}

						// Multi-Selects return an array
						values.push( value );
					}
				}

				return values;
			},

			set: function( elem, value ) {
				var optionSet, option,
					options = elem.options,
					values = jQuery.makeArray( value ),
					i = options.length;

				while ( i-- ) {
					option = options[ i ];

					if ( jQuery.inArray( jQuery.valHooks.option.get( option ), values ) >= 0 ) {

						// Support: IE6
						// When new option element is added to select box we need to
						// force reflow of newly added node in order to workaround delay
						// of initialization properties
						try {
							option.selected = optionSet = true;

						} catch ( _ ) {

							// Will be executed only in IE6
							option.scrollHeight;
						}

					} else {
						option.selected = false;
					}
				}

				// Force browsers to behave consistently when non-matching value is set
				if ( !optionSet ) {
					elem.selectedIndex = -1;
				}

				return options;
			}
		}
	}
});

// Radios and checkboxes getter/setter
jQuery.each([ "radio", "checkbox" ], function() {
	jQuery.valHooks[ this ] = {
		set: function( elem, value ) {
			if ( jQuery.isArray( value ) ) {
				return ( elem.checked = jQuery.inArray( jQuery(elem).val(), value ) >= 0 );
			}
		}
	};
	if ( !support.checkOn ) {
		jQuery.valHooks[ this ].get = function( elem ) {
			// Support: Webkit
			// "" is returned instead of "on" if a value isn't specified
			return elem.getAttribute("value") === null ? "on" : elem.value;
		};
	}
});




var nodeHook, boolHook,
	attrHandle = jQuery.expr.attrHandle,
	ruseDefault = /^(?:checked|selected)$/i,
	getSetAttribute = support.getSetAttribute,
	getSetInput = support.input;

jQuery.fn.extend({
	attr: function( name, value ) {
		return access( this, jQuery.attr, name, value, arguments.length > 1 );
	},

	removeAttr: function( name ) {
		return this.each(function() {
			jQuery.removeAttr( this, name );
		});
	}
});

jQuery.extend({
	attr: function( elem, name, value ) {
		var hooks, ret,
			nType = elem.nodeType;

		// don't get/set attributes on text, comment and attribute nodes
		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
			return;
		}

		// Fallback to prop when attributes are not supported
		if ( typeof elem.getAttribute === strundefined ) {
			return jQuery.prop( elem, name, value );
		}

		// All attributes are lowercase
		// Grab necessary hook if one is defined
		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
			name = name.toLowerCase();
			hooks = jQuery.attrHooks[ name ] ||
				( jQuery.expr.match.bool.test( name ) ? boolHook : nodeHook );
		}

		if ( value !== undefined ) {

			if ( value === null ) {
				jQuery.removeAttr( elem, name );

			} else if ( hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ) {
				return ret;

			} else {
				elem.setAttribute( name, value + "" );
				return value;
			}

		} else if ( hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ) {
			return ret;

		} else {
			ret = jQuery.find.attr( elem, name );

			// Non-existent attributes return null, we normalize to undefined
			return ret == null ?
				undefined :
				ret;
		}
	},

	removeAttr: function( elem, value ) {
		var name, propName,
			i = 0,
			attrNames = value && value.match( rnotwhite );

		if ( attrNames && elem.nodeType === 1 ) {
			while ( (name = attrNames[i++]) ) {
				propName = jQuery.propFix[ name ] || name;

				// Boolean attributes get special treatment (#10870)
				if ( jQuery.expr.match.bool.test( name ) ) {
					// Set corresponding property to false
					if ( getSetInput && getSetAttribute || !ruseDefault.test( name ) ) {
						elem[ propName ] = false;
					// Support: IE<9
					// Also clear defaultChecked/defaultSelected (if appropriate)
					} else {
						elem[ jQuery.camelCase( "default-" + name ) ] =
							elem[ propName ] = false;
					}

				// See #9699 for explanation of this approach (setting first, then removal)
				} else {
					jQuery.attr( elem, name, "" );
				}

				elem.removeAttribute( getSetAttribute ? name : propName );
			}
		}
	},

	attrHooks: {
		type: {
			set: function( elem, value ) {
				if ( !support.radioValue && value === "radio" && jQuery.nodeName(elem, "input") ) {
					// Setting the type on a radio button after the value resets the value in IE6-9
					// Reset value to default in case type is set after value during creation
					var val = elem.value;
					elem.setAttribute( "type", value );
					if ( val ) {
						elem.value = val;
					}
					return value;
				}
			}
		}
	}
});

// Hook for boolean attributes
boolHook = {
	set: function( elem, value, name ) {
		if ( value === false ) {
			// Remove boolean attributes when set to false
			jQuery.removeAttr( elem, name );
		} else if ( getSetInput && getSetAttribute || !ruseDefault.test( name ) ) {
			// IE<8 needs the *property* name
			elem.setAttribute( !getSetAttribute && jQuery.propFix[ name ] || name, name );

		// Use defaultChecked and defaultSelected for oldIE
		} else {
			elem[ jQuery.camelCase( "default-" + name ) ] = elem[ name ] = true;
		}

		return name;
	}
};

// Retrieve booleans specially
jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {

	var getter = attrHandle[ name ] || jQuery.find.attr;

	attrHandle[ name ] = getSetInput && getSetAttribute || !ruseDefault.test( name ) ?
		function( elem, name, isXML ) {
			var ret, handle;
			if ( !isXML ) {
				// Avoid an infinite loop by temporarily removing this function from the getter
				handle = attrHandle[ name ];
				attrHandle[ name ] = ret;
				ret = getter( elem, name, isXML ) != null ?
					name.toLowerCase() :
					null;
				attrHandle[ name ] = handle;
			}
			return ret;
		} :
		function( elem, name, isXML ) {
			if ( !isXML ) {
				return elem[ jQuery.camelCase( "default-" + name ) ] ?
					name.toLowerCase() :
					null;
			}
		};
});

// fix oldIE attroperties
if ( !getSetInput || !getSetAttribute ) {
	jQuery.attrHooks.value = {
		set: function( elem, value, name ) {
			if ( jQuery.nodeName( elem, "input" ) ) {
				// Does not return so that setAttribute is also used
				elem.defaultValue = value;
			} else {
				// Use nodeHook if defined (#1954); otherwise setAttribute is fine
				return nodeHook && nodeHook.set( elem, value, name );
			}
		}
	};
}

// IE6/7 do not support getting/setting some attributes with get/setAttribute
if ( !getSetAttribute ) {

	// Use this for any attribute in IE6/7
	// This fixes almost every IE6/7 issue
	nodeHook = {
		set: function( elem, value, name ) {
			// Set the existing or create a new attribute node
			var ret = elem.getAttributeNode( name );
			if ( !ret ) {
				elem.setAttributeNode(
					(ret = elem.ownerDocument.createAttribute( name ))
				);
			}

			ret.value = value += "";

			// Break association with cloned elements by also using setAttribute (#9646)
			if ( name === "value" || value === elem.getAttribute( name ) ) {
				return value;
			}
		}
	};

	// Some attributes are constructed with empty-string values when not defined
	attrHandle.id = attrHandle.name = attrHandle.coords =
		function( elem, name, isXML ) {
			var ret;
			if ( !isXML ) {
				return (ret = elem.getAttributeNode( name )) && ret.value !== "" ?
					ret.value :
					null;
			}
		};

	// Fixing value retrieval on a button requires this module
	jQuery.valHooks.button = {
		get: function( elem, name ) {
			var ret = elem.getAttributeNode( name );
			if ( ret && ret.specified ) {
				return ret.value;
			}
		},
		set: nodeHook.set
	};

	// Set contenteditable to false on removals(#10429)
	// Setting to empty string throws an error as an invalid value
	jQuery.attrHooks.contenteditable = {
		set: function( elem, value, name ) {
			nodeHook.set( elem, value === "" ? false : value, name );
		}
	};

	// Set width and height to auto instead of 0 on empty string( Bug #8150 )
	// This is for removals
	jQuery.each([ "width", "height" ], function( i, name ) {
		jQuery.attrHooks[ name ] = {
			set: function( elem, value ) {
				if ( value === "" ) {
					elem.setAttribute( name, "auto" );
					return value;
				}
			}
		};
	});
}

if ( !support.style ) {
	jQuery.attrHooks.style = {
		get: function( elem ) {
			// Return undefined in the case of empty string
			// Note: IE uppercases css property names, but if we were to .toLowerCase()
			// .cssText, that would destroy case senstitivity in URL's, like in "background"
			return elem.style.cssText || undefined;
		},
		set: function( elem, value ) {
			return ( elem.style.cssText = value + "" );
		}
	};
}




var rfocusable = /^(?:input|select|textarea|button|object)$/i,
	rclickable = /^(?:a|area)$/i;

jQuery.fn.extend({
	prop: function( name, value ) {
		return access( this, jQuery.prop, name, value, arguments.length > 1 );
	},

	removeProp: function( name ) {
		name = jQuery.propFix[ name ] || name;
		return this.each(function() {
			// try/catch handles cases where IE balks (such as removing a property on window)
			try {
				this[ name ] = undefined;
				delete this[ name ];
			} catch( e ) {}
		});
	}
});

jQuery.extend({
	propFix: {
		"for": "htmlFor",
		"class": "className"
	},

	prop: function( elem, name, value ) {
		var ret, hooks, notxml,
			nType = elem.nodeType;

		// don't get/set properties on text, comment and attribute nodes
		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
			return;
		}

		notxml = nType !== 1 || !jQuery.isXMLDoc( elem );

		if ( notxml ) {
			// Fix name and attach hooks
			name = jQuery.propFix[ name ] || name;
			hooks = jQuery.propHooks[ name ];
		}

		if ( value !== undefined ) {
			return hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ?
				ret :
				( elem[ name ] = value );

		} else {
			return hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ?
				ret :
				elem[ name ];
		}
	},

	propHooks: {
		tabIndex: {
			get: function( elem ) {
				// elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
				// http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
				// Use proper attribute retrieval(#12072)
				var tabindex = jQuery.find.attr( elem, "tabindex" );

				return tabindex ?
					parseInt( tabindex, 10 ) :
					rfocusable.test( elem.nodeName ) || rclickable.test( elem.nodeName ) && elem.href ?
						0 :
						-1;
			}
		}
	}
});

// Some attributes require a special call on IE
// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !support.hrefNormalized ) {
	// href/src property should get the full normalized URL (#10299/#12915)
	jQuery.each([ "href", "src" ], function( i, name ) {
		jQuery.propHooks[ name ] = {
			get: function( elem ) {
				return elem.getAttribute( name, 4 );
			}
		};
	});
}

// Support: Safari, IE9+
// mis-reports the default selected property of an option
// Accessing the parent's selectedIndex property fixes it
if ( !support.optSelected ) {
	jQuery.propHooks.selected = {
		get: function( elem ) {
			var parent = elem.parentNode;

			if ( parent ) {
				parent.selectedIndex;

				// Make sure that it also works with optgroups, see #5701
				if ( parent.parentNode ) {
					parent.parentNode.selectedIndex;
				}
			}
			return null;
		}
	};
}

jQuery.each([
	"tabIndex",
	"readOnly",
	"maxLength",
	"cellSpacing",
	"cellPadding",
	"rowSpan",
	"colSpan",
	"useMap",
	"frameBorder",
	"contentEditable"
], function() {
	jQuery.propFix[ this.toLowerCase() ] = this;
});

// IE6/7 call enctype encoding
if ( !support.enctype ) {
	jQuery.propFix.enctype = "encoding";
}




var rclass = /[\t\r\n\f]/g;

jQuery.fn.extend({
	addClass: function( value ) {
		var classes, elem, cur, clazz, j, finalValue,
			i = 0,
			len = this.length,
			proceed = typeof value === "string" && value;

		if ( jQuery.isFunction( value ) ) {
			return this.each(function( j ) {
				jQuery( this ).addClass( value.call( this, j, this.className ) );
			});
		}

		if ( proceed ) {
			// The disjunction here is for better compressibility (see removeClass)
			classes = ( value || "" ).match( rnotwhite ) || [];

			for ( ; i < len; i++ ) {
				elem = this[ i ];
				cur = elem.nodeType === 1 && ( elem.className ?
					( " " + elem.className + " " ).replace( rclass, " " ) :
					" "
				);

				if ( cur ) {
					j = 0;
					while ( (clazz = classes[j++]) ) {
						if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
							cur += clazz + " ";
						}
					}

					// only assign if different to avoid unneeded rendering.
					finalValue = jQuery.trim( cur );
					if ( elem.className !== finalValue ) {
						elem.className = finalValue;
					}
				}
			}
		}

		return this;
	},

	removeClass: function( value ) {
		var classes, elem, cur, clazz, j, finalValue,
			i = 0,
			len = this.length,
			proceed = arguments.length === 0 || typeof value === "string" && value;

		if ( jQuery.isFunction( value ) ) {
			return this.each(function( j ) {
				jQuery( this ).removeClass( value.call( this, j, this.className ) );
			});
		}
		if ( proceed ) {
			classes = ( value || "" ).match( rnotwhite ) || [];

			for ( ; i < len; i++ ) {
				elem = this[ i ];
				// This expression is here for better compressibility (see addClass)
				cur = elem.nodeType === 1 && ( elem.className ?
					( " " + elem.className + " " ).replace( rclass, " " ) :
					""
				);

				if ( cur ) {
					j = 0;
					while ( (clazz = classes[j++]) ) {
						// Remove *all* instances
						while ( cur.indexOf( " " + clazz + " " ) >= 0 ) {
							cur = cur.replace( " " + clazz + " ", " " );
						}
					}

					// only assign if different to avoid unneeded rendering.
					finalValue = value ? jQuery.trim( cur ) : "";
					if ( elem.className !== finalValue ) {
						elem.className = finalValue;
					}
				}
			}
		}

		return this;
	},

	toggleClass: function( value, stateVal ) {
		var type = typeof value;

		if ( typeof stateVal === "boolean" && type === "string" ) {
			return stateVal ? this.addClass( value ) : this.removeClass( value );
		}

		if ( jQuery.isFunction( value ) ) {
			return this.each(function( i ) {
				jQuery( this ).toggleClass( value.call(this, i, this.className, stateVal), stateVal );
			});
		}

		return this.each(function() {
			if ( type === "string" ) {
				// toggle individual class names
				var className,
					i = 0,
					self = jQuery( this ),
					classNames = value.match( rnotwhite ) || [];

				while ( (className = classNames[ i++ ]) ) {
					// check each className given, space separated list
					if ( self.hasClass( className ) ) {
						self.removeClass( className );
					} else {
						self.addClass( className );
					}
				}

			// Toggle whole class name
			} else if ( type === strundefined || type === "boolean" ) {
				if ( this.className ) {
					// store className if set
					jQuery._data( this, "__className__", this.className );
				}

				// If the element has a class name or if we're passed "false",
				// then remove the whole classname (if there was one, the above saved it).
				// Otherwise bring back whatever was previously saved (if anything),
				// falling back to the empty string if nothing was stored.
				this.className = this.className || value === false ? "" : jQuery._data( this, "__className__" ) || "";
			}
		});
	},

	hasClass: function( selector ) {
		var className = " " + selector + " ",
			i = 0,
			l = this.length;
		for ( ; i < l; i++ ) {
			if ( this[i].nodeType === 1 && (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) >= 0 ) {
				return true;
			}
		}

		return false;
	}
});




// Return jQuery for attributes-only inclusion


jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " +
	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
	"change select submit keydown keypress keyup error contextmenu").split(" "), function( i, name ) {

	// Handle event binding
	jQuery.fn[ name ] = function( data, fn ) {
		return arguments.length > 0 ?
			this.on( name, null, data, fn ) :
			this.trigger( name );
	};
});

jQuery.fn.extend({
	hover: function( fnOver, fnOut ) {
		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
	},

	bind: function( types, data, fn ) {
		return this.on( types, null, data, fn );
	},
	unbind: function( types, fn ) {
		return this.off( types, null, fn );
	},

	delegate: function( selector, types, data, fn ) {
		return this.on( types, selector, data, fn );
	},
	undelegate: function( selector, types, fn ) {
		// ( namespace ) or ( selector, types [, fn] )
		return arguments.length === 1 ? this.off( selector, "**" ) : this.off( types, selector || "**", fn );
	}
});


var nonce = jQuery.now();

var rquery = (/\?/);



var rvalidtokens = /(,)|(\[|{)|(}|])|"(?:[^"\\\r\n]|\\["\\\/bfnrt]|\\u[\da-fA-F]{4})*"\s*:?|true|false|null|-?(?!0\d)\d+(?:\.\d+|)(?:[eE][+-]?\d+|)/g;

jQuery.parseJSON = function( data ) {
	// Attempt to parse using the native JSON parser first
	if ( window.JSON && window.JSON.parse ) {
		// Support: Android 2.3
		// Workaround failure to string-cast null input
		return window.JSON.parse( data + "" );
	}

	var requireNonComma,
		depth = null,
		str = jQuery.trim( data + "" );

	// Guard against invalid (and possibly dangerous) input by ensuring that nothing remains
	// after removing valid tokens
	return str && !jQuery.trim( str.replace( rvalidtokens, function( token, comma, open, close ) {

		// Force termination if we see a misplaced comma
		if ( requireNonComma && comma ) {
			depth = 0;
		}

		// Perform no more replacements after returning to outermost depth
		if ( depth === 0 ) {
			return token;
		}

		// Commas must not follow "[", "{", or ","
		requireNonComma = open || comma;

		// Determine new depth
		// array/object open ("[" or "{"): depth += true - false (increment)
		// array/object close ("]" or "}"): depth += false - true (decrement)
		// other cases ("," or primitive): depth += true - true (numeric cast)
		depth += !close - !open;

		// Remove this token
		return "";
	}) ) ?
		( Function( "return " + str ) )() :
		jQuery.error( "Invalid JSON: " + data );
};


// Cross-browser xml parsing
jQuery.parseXML = function( data ) {
	var xml, tmp;
	if ( !data || typeof data !== "string" ) {
		return null;
	}
	try {
		if ( window.DOMParser ) { // Standard
			tmp = new DOMParser();
			xml = tmp.parseFromString( data, "text/xml" );
		} else { // IE
			xml = new ActiveXObject( "Microsoft.XMLDOM" );
			xml.async = "false";
			xml.loadXML( data );
		}
	} catch( e ) {
		xml = undefined;
	}
	if ( !xml || !xml.documentElement || xml.getElementsByTagName( "parsererror" ).length ) {
		jQuery.error( "Invalid XML: " + data );
	}
	return xml;
};


var
	// Document location
	ajaxLocParts,
	ajaxLocation,

	rhash = /#.*$/,
	rts = /([?&])_=[^&]*/,
	rheaders = /^(.*?):[ \t]*([^\r\n]*)\r?$/mg, // IE leaves an \r character at EOL
	// #7653, #8125, #8152: local protocol detection
	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
	rnoContent = /^(?:GET|HEAD)$/,
	rprotocol = /^\/\//,
	rurl = /^([\w.+-]+:)(?:\/\/(?:[^\/?#]*@|)([^\/?#:]*)(?::(\d+)|)|)/,

	/* Prefilters
	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
	 * 2) These are called:
	 *    - BEFORE asking for a transport
	 *    - AFTER param serialization (s.data is a string if s.processData is true)
	 * 3) key is the dataType
	 * 4) the catchall symbol "*" can be used
	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
	 */
	prefilters = {},

	/* Transports bindings
	 * 1) key is the dataType
	 * 2) the catchall symbol "*" can be used
	 * 3) selection will start with transport dataType and THEN go to "*" if needed
	 */
	transports = {},

	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
	allTypes = "*/".concat("*");

// #8138, IE may throw an exception when accessing
// a field from window.location if document.domain has been set
try {
	ajaxLocation = location.href;
} catch( e ) {
	// Use the href attribute of an A element
	// since IE will modify it given document.location
	ajaxLocation = document.createElement( "a" );
	ajaxLocation.href = "";
	ajaxLocation = ajaxLocation.href;
}

// Segment location into parts
ajaxLocParts = rurl.exec( ajaxLocation.toLowerCase() ) || [];

// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
function addToPrefiltersOrTransports( structure ) {

	// dataTypeExpression is optional and defaults to "*"
	return function( dataTypeExpression, func ) {

		if ( typeof dataTypeExpression !== "string" ) {
			func = dataTypeExpression;
			dataTypeExpression = "*";
		}

		var dataType,
			i = 0,
			dataTypes = dataTypeExpression.toLowerCase().match( rnotwhite ) || [];

		if ( jQuery.isFunction( func ) ) {
			// For each dataType in the dataTypeExpression
			while ( (dataType = dataTypes[i++]) ) {
				// Prepend if requested
				if ( dataType.charAt( 0 ) === "+" ) {
					dataType = dataType.slice( 1 ) || "*";
					(structure[ dataType ] = structure[ dataType ] || []).unshift( func );

				// Otherwise append
				} else {
					(structure[ dataType ] = structure[ dataType ] || []).push( func );
				}
			}
		}
	};
}

// Base inspection function for prefilters and transports
function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {

	var inspected = {},
		seekingTransport = ( structure === transports );

	function inspect( dataType ) {
		var selected;
		inspected[ dataType ] = true;
		jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
			var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
			if ( typeof dataTypeOrTransport === "string" && !seekingTransport && !inspected[ dataTypeOrTransport ] ) {
				options.dataTypes.unshift( dataTypeOrTransport );
				inspect( dataTypeOrTransport );
				return false;
			} else if ( seekingTransport ) {
				return !( selected = dataTypeOrTransport );
			}
		});
		return selected;
	}

	return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
}

// A special extend for ajax options
// that takes "flat" options (not to be deep extended)
// Fixes #9887
function ajaxExtend( target, src ) {
	var deep, key,
		flatOptions = jQuery.ajaxSettings.flatOptions || {};

	for ( key in src ) {
		if ( src[ key ] !== undefined ) {
			( flatOptions[ key ] ? target : ( deep || (deep = {}) ) )[ key ] = src[ key ];
		}
	}
	if ( deep ) {
		jQuery.extend( true, target, deep );
	}

	return target;
}

/* Handles responses to an ajax request:
 * - finds the right dataType (mediates between content-type and expected dataType)
 * - returns the corresponding response
 */
function ajaxHandleResponses( s, jqXHR, responses ) {
	var firstDataType, ct, finalDataType, type,
		contents = s.contents,
		dataTypes = s.dataTypes;

	// Remove auto dataType and get content-type in the process
	while ( dataTypes[ 0 ] === "*" ) {
		dataTypes.shift();
		if ( ct === undefined ) {
			ct = s.mimeType || jqXHR.getResponseHeader("Content-Type");
		}
	}

	// Check if we're dealing with a known content-type
	if ( ct ) {
		for ( type in contents ) {
			if ( contents[ type ] && contents[ type ].test( ct ) ) {
				dataTypes.unshift( type );
				break;
			}
		}
	}

	// Check to see if we have a response for the expected dataType
	if ( dataTypes[ 0 ] in responses ) {
		finalDataType = dataTypes[ 0 ];
	} else {
		// Try convertible dataTypes
		for ( type in responses ) {
			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[0] ] ) {
				finalDataType = type;
				break;
			}
			if ( !firstDataType ) {
				firstDataType = type;
			}
		}
		// Or just use first one
		finalDataType = finalDataType || firstDataType;
	}

	// If we found a dataType
	// We add the dataType to the list if needed
	// and return the corresponding response
	if ( finalDataType ) {
		if ( finalDataType !== dataTypes[ 0 ] ) {
			dataTypes.unshift( finalDataType );
		}
		return responses[ finalDataType ];
	}
}

/* Chain conversions given the request and the original response
 * Also sets the responseXXX fields on the jqXHR instance
 */
function ajaxConvert( s, response, jqXHR, isSuccess ) {
	var conv2, current, conv, tmp, prev,
		converters = {},
		// Work with a copy of dataTypes in case we need to modify it for conversion
		dataTypes = s.dataTypes.slice();

	// Create converters map with lowercased keys
	if ( dataTypes[ 1 ] ) {
		for ( conv in s.converters ) {
			converters[ conv.toLowerCase() ] = s.converters[ conv ];
		}
	}

	current = dataTypes.shift();

	// Convert to each sequential dataType
	while ( current ) {

		if ( s.responseFields[ current ] ) {
			jqXHR[ s.responseFields[ current ] ] = response;
		}

		// Apply the dataFilter if provided
		if ( !prev && isSuccess && s.dataFilter ) {
			response = s.dataFilter( response, s.dataType );
		}

		prev = current;
		current = dataTypes.shift();

		if ( current ) {

			// There's only work to do if current dataType is non-auto
			if ( current === "*" ) {

				current = prev;

			// Convert response if prev dataType is non-auto and differs from current
			} else if ( prev !== "*" && prev !== current ) {

				// Seek a direct converter
				conv = converters[ prev + " " + current ] || converters[ "* " + current ];

				// If none found, seek a pair
				if ( !conv ) {
					for ( conv2 in converters ) {

						// If conv2 outputs current
						tmp = conv2.split( " " );
						if ( tmp[ 1 ] === current ) {

							// If prev can be converted to accepted input
							conv = converters[ prev + " " + tmp[ 0 ] ] ||
								converters[ "* " + tmp[ 0 ] ];
							if ( conv ) {
								// Condense equivalence converters
								if ( conv === true ) {
									conv = converters[ conv2 ];

								// Otherwise, insert the intermediate dataType
								} else if ( converters[ conv2 ] !== true ) {
									current = tmp[ 0 ];
									dataTypes.unshift( tmp[ 1 ] );
								}
								break;
							}
						}
					}
				}

				// Apply converter (if not an equivalence)
				if ( conv !== true ) {

					// Unless errors are allowed to bubble, catch and return them
					if ( conv && s[ "throws" ] ) {
						response = conv( response );
					} else {
						try {
							response = conv( response );
						} catch ( e ) {
							return { state: "parsererror", error: conv ? e : "No conversion from " + prev + " to " + current };
						}
					}
				}
			}
		}
	}

	return { state: "success", data: response };
}

jQuery.extend({

	// Counter for holding the number of active queries
	active: 0,

	// Last-Modified header cache for next request
	lastModified: {},
	etag: {},

	ajaxSettings: {
		url: ajaxLocation,
		type: "GET",
		isLocal: rlocalProtocol.test( ajaxLocParts[ 1 ] ),
		global: true,
		processData: true,
		async: true,
		contentType: "application/x-www-form-urlencoded; charset=UTF-8",
		/*
		timeout: 0,
		data: null,
		dataType: null,
		username: null,
		password: null,
		cache: null,
		throws: false,
		traditional: false,
		headers: {},
		*/

		accepts: {
			"*": allTypes,
			text: "text/plain",
			html: "text/html",
			xml: "application/xml, text/xml",
			json: "application/json, text/javascript"
		},

		contents: {
			xml: /xml/,
			html: /html/,
			json: /json/
		},

		responseFields: {
			xml: "responseXML",
			text: "responseText",
			json: "responseJSON"
		},

		// Data converters
		// Keys separate source (or catchall "*") and destination types with a single space
		converters: {

			// Convert anything to text
			"* text": String,

			// Text to html (true = no transformation)
			"text html": true,

			// Evaluate text as a json expression
			"text json": jQuery.parseJSON,

			// Parse text as xml
			"text xml": jQuery.parseXML
		},

		// For options that shouldn't be deep extended:
		// you can add your own custom options here if
		// and when you create one that shouldn't be
		// deep extended (see ajaxExtend)
		flatOptions: {
			url: true,
			context: true
		}
	},

	// Creates a full fledged settings object into target
	// with both ajaxSettings and settings fields.
	// If target is omitted, writes into ajaxSettings.
	ajaxSetup: function( target, settings ) {
		return settings ?

			// Building a settings object
			ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :

			// Extending ajaxSettings
			ajaxExtend( jQuery.ajaxSettings, target );
	},

	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
	ajaxTransport: addToPrefiltersOrTransports( transports ),

	// Main method
	ajax: function( url, options ) {

		// If url is an object, simulate pre-1.5 signature
		if ( typeof url === "object" ) {
			options = url;
			url = undefined;
		}

		// Force options to be an object
		options = options || {};

		var // Cross-domain detection vars
			parts,
			// Loop variable
			i,
			// URL without anti-cache param
			cacheURL,
			// Response headers as string
			responseHeadersString,
			// timeout handle
			timeoutTimer,

			// To know if global events are to be dispatched
			fireGlobals,

			transport,
			// Response headers
			responseHeaders,
			// Create the final options object
			s = jQuery.ajaxSetup( {}, options ),
			// Callbacks context
			callbackContext = s.context || s,
			// Context for global events is callbackContext if it is a DOM node or jQuery collection
			globalEventContext = s.context && ( callbackContext.nodeType || callbackContext.jquery ) ?
				jQuery( callbackContext ) :
				jQuery.event,
			// Deferreds
			deferred = jQuery.Deferred(),
			completeDeferred = jQuery.Callbacks("once memory"),
			// Status-dependent callbacks
			statusCode = s.statusCode || {},
			// Headers (they are sent all at once)
			requestHeaders = {},
			requestHeadersNames = {},
			// The jqXHR state
			state = 0,
			// Default abort message
			strAbort = "canceled",
			// Fake xhr
			jqXHR = {
				readyState: 0,

				// Builds headers hashtable if needed
				getResponseHeader: function( key ) {
					var match;
					if ( state === 2 ) {
						if ( !responseHeaders ) {
							responseHeaders = {};
							while ( (match = rheaders.exec( responseHeadersString )) ) {
								responseHeaders[ match[1].toLowerCase() ] = match[ 2 ];
							}
						}
						match = responseHeaders[ key.toLowerCase() ];
					}
					return match == null ? null : match;
				},

				// Raw string
				getAllResponseHeaders: function() {
					return state === 2 ? responseHeadersString : null;
				},

				// Caches the header
				setRequestHeader: function( name, value ) {
					var lname = name.toLowerCase();
					if ( !state ) {
						name = requestHeadersNames[ lname ] = requestHeadersNames[ lname ] || name;
						requestHeaders[ name ] = value;
					}
					return this;
				},

				// Overrides response content-type header
				overrideMimeType: function( type ) {
					if ( !state ) {
						s.mimeType = type;
					}
					return this;
				},

				// Status-dependent callbacks
				statusCode: function( map ) {
					var code;
					if ( map ) {
						if ( state < 2 ) {
							for ( code in map ) {
								// Lazy-add the new callback in a way that preserves old ones
								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
							}
						} else {
							// Execute the appropriate callbacks
							jqXHR.always( map[ jqXHR.status ] );
						}
					}
					return this;
				},

				// Cancel the request
				abort: function( statusText ) {
					var finalText = statusText || strAbort;
					if ( transport ) {
						transport.abort( finalText );
					}
					done( 0, finalText );
					return this;
				}
			};

		// Attach deferreds
		deferred.promise( jqXHR ).complete = completeDeferred.add;
		jqXHR.success = jqXHR.done;
		jqXHR.error = jqXHR.fail;

		// Remove hash character (#7531: and string promotion)
		// Add protocol if not provided (#5866: IE7 issue with protocol-less urls)
		// Handle falsy url in the settings object (#10093: consistency with old signature)
		// We also use the url parameter if available
		s.url = ( ( url || s.url || ajaxLocation ) + "" ).replace( rhash, "" ).replace( rprotocol, ajaxLocParts[ 1 ] + "//" );

		// Alias method option to type as per ticket #12004
		s.type = options.method || options.type || s.method || s.type;

		// Extract dataTypes list
		s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().match( rnotwhite ) || [ "" ];

		// A cross-domain request is in order when we have a protocol:host:port mismatch
		if ( s.crossDomain == null ) {
			parts = rurl.exec( s.url.toLowerCase() );
			s.crossDomain = !!( parts &&
				( parts[ 1 ] !== ajaxLocParts[ 1 ] || parts[ 2 ] !== ajaxLocParts[ 2 ] ||
					( parts[ 3 ] || ( parts[ 1 ] === "http:" ? "80" : "443" ) ) !==
						( ajaxLocParts[ 3 ] || ( ajaxLocParts[ 1 ] === "http:" ? "80" : "443" ) ) )
			);
		}

		// Convert data if not already a string
		if ( s.data && s.processData && typeof s.data !== "string" ) {
			s.data = jQuery.param( s.data, s.traditional );
		}

		// Apply prefilters
		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );

		// If request was aborted inside a prefilter, stop there
		if ( state === 2 ) {
			return jqXHR;
		}

		// We can fire global events as of now if asked to
		fireGlobals = s.global;

		// Watch for a new set of requests
		if ( fireGlobals && jQuery.active++ === 0 ) {
			jQuery.event.trigger("ajaxStart");
		}

		// Uppercase the type
		s.type = s.type.toUpperCase();

		// Determine if request has content
		s.hasContent = !rnoContent.test( s.type );

		// Save the URL in case we're toying with the If-Modified-Since
		// and/or If-None-Match header later on
		cacheURL = s.url;

		// More options handling for requests with no content
		if ( !s.hasContent ) {

			// If data is available, append data to url
			if ( s.data ) {
				cacheURL = ( s.url += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data );
				// #9682: remove data so that it's not used in an eventual retry
				delete s.data;
			}

			// Add anti-cache in url if needed
			if ( s.cache === false ) {
				s.url = rts.test( cacheURL ) ?

					// If there is already a '_' parameter, set its value
					cacheURL.replace( rts, "$1_=" + nonce++ ) :

					// Otherwise add one to the end
					cacheURL + ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + nonce++;
			}
		}

		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
		if ( s.ifModified ) {
			if ( jQuery.lastModified[ cacheURL ] ) {
				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
			}
			if ( jQuery.etag[ cacheURL ] ) {
				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
			}
		}

		// Set the correct header, if data is being sent
		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
			jqXHR.setRequestHeader( "Content-Type", s.contentType );
		}

		// Set the Accepts header for the server, depending on the dataType
		jqXHR.setRequestHeader(
			"Accept",
			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[0] ] ?
				s.accepts[ s.dataTypes[0] ] + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
				s.accepts[ "*" ]
		);

		// Check for headers option
		for ( i in s.headers ) {
			jqXHR.setRequestHeader( i, s.headers[ i ] );
		}

		// Allow custom headers/mimetypes and early abort
		if ( s.beforeSend && ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) {
			// Abort if not done already and return
			return jqXHR.abort();
		}

		// aborting is no longer a cancellation
		strAbort = "abort";

		// Install callbacks on deferreds
		for ( i in { success: 1, error: 1, complete: 1 } ) {
			jqXHR[ i ]( s[ i ] );
		}

		// Get transport
		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );

		// If no transport, we auto-abort
		if ( !transport ) {
			done( -1, "No Transport" );
		} else {
			jqXHR.readyState = 1;

			// Send global event
			if ( fireGlobals ) {
				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
			}
			// Timeout
			if ( s.async && s.timeout > 0 ) {
				timeoutTimer = setTimeout(function() {
					jqXHR.abort("timeout");
				}, s.timeout );
			}

			try {
				state = 1;
				transport.send( requestHeaders, done );
			} catch ( e ) {
				// Propagate exception as error if not done
				if ( state < 2 ) {
					done( -1, e );
				// Simply rethrow otherwise
				} else {
					throw e;
				}
			}
		}

		// Callback for when everything is done
		function done( status, nativeStatusText, responses, headers ) {
			var isSuccess, success, error, response, modified,
				statusText = nativeStatusText;

			// Called once
			if ( state === 2 ) {
				return;
			}

			// State is "done" now
			state = 2;

			// Clear timeout if it exists
			if ( timeoutTimer ) {
				clearTimeout( timeoutTimer );
			}

			// Dereference transport for early garbage collection
			// (no matter how long the jqXHR object will be used)
			transport = undefined;

			// Cache response headers
			responseHeadersString = headers || "";

			// Set readyState
			jqXHR.readyState = status > 0 ? 4 : 0;

			// Determine if successful
			isSuccess = status >= 200 && status < 300 || status === 304;

			// Get response data
			if ( responses ) {
				response = ajaxHandleResponses( s, jqXHR, responses );
			}

			// Convert no matter what (that way responseXXX fields are always set)
			response = ajaxConvert( s, response, jqXHR, isSuccess );

			// If successful, handle type chaining
			if ( isSuccess ) {

				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
				if ( s.ifModified ) {
					modified = jqXHR.getResponseHeader("Last-Modified");
					if ( modified ) {
						jQuery.lastModified[ cacheURL ] = modified;
					}
					modified = jqXHR.getResponseHeader("etag");
					if ( modified ) {
						jQuery.etag[ cacheURL ] = modified;
					}
				}

				// if no content
				if ( status === 204 || s.type === "HEAD" ) {
					statusText = "nocontent";

				// if not modified
				} else if ( status === 304 ) {
					statusText = "notmodified";

				// If we have data, let's convert it
				} else {
					statusText = response.state;
					success = response.data;
					error = response.error;
					isSuccess = !error;
				}
			} else {
				// We extract error from statusText
				// then normalize statusText and status for non-aborts
				error = statusText;
				if ( status || !statusText ) {
					statusText = "error";
					if ( status < 0 ) {
						status = 0;
					}
				}
			}

			// Set data for the fake xhr object
			jqXHR.status = status;
			jqXHR.statusText = ( nativeStatusText || statusText ) + "";

			// Success/Error
			if ( isSuccess ) {
				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
			} else {
				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
			}

			// Status-dependent callbacks
			jqXHR.statusCode( statusCode );
			statusCode = undefined;

			if ( fireGlobals ) {
				globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
					[ jqXHR, s, isSuccess ? success : error ] );
			}

			// Complete
			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );

			if ( fireGlobals ) {
				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );
				// Handle the global AJAX counter
				if ( !( --jQuery.active ) ) {
					jQuery.event.trigger("ajaxStop");
				}
			}
		}

		return jqXHR;
	},

	getJSON: function( url, data, callback ) {
		return jQuery.get( url, data, callback, "json" );
	},

	getScript: function( url, callback ) {
		return jQuery.get( url, undefined, callback, "script" );
	}
});

jQuery.each( [ "get", "post" ], function( i, method ) {
	jQuery[ method ] = function( url, data, callback, type ) {
		// shift arguments if data argument was omitted
		if ( jQuery.isFunction( data ) ) {
			type = type || callback;
			callback = data;
			data = undefined;
		}

		return jQuery.ajax({
			url: url,
			type: method,
			dataType: type,
			data: data,
			success: callback
		});
	};
});

// Attach a bunch of functions for handling common AJAX events
jQuery.each( [ "ajaxStart", "ajaxStop", "ajaxComplete", "ajaxError", "ajaxSuccess", "ajaxSend" ], function( i, type ) {
	jQuery.fn[ type ] = function( fn ) {
		return this.on( type, fn );
	};
});


jQuery._evalUrl = function( url ) {
	return jQuery.ajax({
		url: url,
		type: "GET",
		dataType: "script",
		async: false,
		global: false,
		"throws": true
	});
};


jQuery.fn.extend({
	wrapAll: function( html ) {
		if ( jQuery.isFunction( html ) ) {
			return this.each(function(i) {
				jQuery(this).wrapAll( html.call(this, i) );
			});
		}

		if ( this[0] ) {
			// The elements to wrap the target around
			var wrap = jQuery( html, this[0].ownerDocument ).eq(0).clone(true);

			if ( this[0].parentNode ) {
				wrap.insertBefore( this[0] );
			}

			wrap.map(function() {
				var elem = this;

				while ( elem.firstChild && elem.firstChild.nodeType === 1 ) {
					elem = elem.firstChild;
				}

				return elem;
			}).append( this );
		}

		return this;
	},

	wrapInner: function( html ) {
		if ( jQuery.isFunction( html ) ) {
			return this.each(function(i) {
				jQuery(this).wrapInner( html.call(this, i) );
			});
		}

		return this.each(function() {
			var self = jQuery( this ),
				contents = self.contents();

			if ( contents.length ) {
				contents.wrapAll( html );

			} else {
				self.append( html );
			}
		});
	},

	wrap: function( html ) {
		var isFunction = jQuery.isFunction( html );

		return this.each(function(i) {
			jQuery( this ).wrapAll( isFunction ? html.call(this, i) : html );
		});
	},

	unwrap: function() {
		return this.parent().each(function() {
			if ( !jQuery.nodeName( this, "body" ) ) {
				jQuery( this ).replaceWith( this.childNodes );
			}
		}).end();
	}
});


jQuery.expr.filters.hidden = function( elem ) {
	// Support: Opera <= 12.12
	// Opera reports offsetWidths and offsetHeights less than zero on some elements
	return elem.offsetWidth <= 0 && elem.offsetHeight <= 0 ||
		(!support.reliableHiddenOffsets() &&
			((elem.style && elem.style.display) || jQuery.css( elem, "display" )) === "none");
};

jQuery.expr.filters.visible = function( elem ) {
	return !jQuery.expr.filters.hidden( elem );
};




var r20 = /%20/g,
	rbracket = /\[\]$/,
	rCRLF = /\r?\n/g,
	rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
	rsubmittable = /^(?:input|select|textarea|keygen)/i;

function buildParams( prefix, obj, traditional, add ) {
	var name;

	if ( jQuery.isArray( obj ) ) {
		// Serialize array item.
		jQuery.each( obj, function( i, v ) {
			if ( traditional || rbracket.test( prefix ) ) {
				// Treat each array item as a scalar.
				add( prefix, v );

			} else {
				// Item is non-scalar (array or object), encode its numeric index.
				buildParams( prefix + "[" + ( typeof v === "object" ? i : "" ) + "]", v, traditional, add );
			}
		});

	} else if ( !traditional && jQuery.type( obj ) === "object" ) {
		// Serialize object item.
		for ( name in obj ) {
			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
		}

	} else {
		// Serialize scalar item.
		add( prefix, obj );
	}
}

// Serialize an array of form elements or a set of
// key/values into a query string
jQuery.param = function( a, traditional ) {
	var prefix,
		s = [],
		add = function( key, value ) {
			// If value is a function, invoke it and return its value
			value = jQuery.isFunction( value ) ? value() : ( value == null ? "" : value );
			s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value );
		};

	// Set traditional to true for jQuery <= 1.3.2 behavior.
	if ( traditional === undefined ) {
		traditional = jQuery.ajaxSettings && jQuery.ajaxSettings.traditional;
	}

	// If an array was passed in, assume that it is an array of form elements.
	if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
		// Serialize the form elements
		jQuery.each( a, function() {
			add( this.name, this.value );
		});

	} else {
		// If traditional, encode the "old" way (the way 1.3.2 or older
		// did it), otherwise encode params recursively.
		for ( prefix in a ) {
			buildParams( prefix, a[ prefix ], traditional, add );
		}
	}

	// Return the resulting serialization
	return s.join( "&" ).replace( r20, "+" );
};

jQuery.fn.extend({
	serialize: function() {
		return jQuery.param( this.serializeArray() );
	},
	serializeArray: function() {
		return this.map(function() {
			// Can add propHook for "elements" to filter or add form elements
			var elements = jQuery.prop( this, "elements" );
			return elements ? jQuery.makeArray( elements ) : this;
		})
		.filter(function() {
			var type = this.type;
			// Use .is(":disabled") so that fieldset[disabled] works
			return this.name && !jQuery( this ).is( ":disabled" ) &&
				rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
				( this.checked || !rcheckableType.test( type ) );
		})
		.map(function( i, elem ) {
			var val = jQuery( this ).val();

			return val == null ?
				null :
				jQuery.isArray( val ) ?
					jQuery.map( val, function( val ) {
						return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
					}) :
					{ name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
		}).get();
	}
});


// Create the request object
// (This is still attached to ajaxSettings for backward compatibility)
jQuery.ajaxSettings.xhr = window.ActiveXObject !== undefined ?
	// Support: IE6+
	function() {

		// XHR cannot access local files, always use ActiveX for that case
		return !this.isLocal &&

			// Support: IE7-8
			// oldIE XHR does not support non-RFC2616 methods (#13240)
			// See http://msdn.microsoft.com/en-us/library/ie/ms536648(v=vs.85).aspx
			// and http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9
			// Although this check for six methods instead of eight
			// since IE also does not support "trace" and "connect"
			/^(get|post|head|put|delete|options)$/i.test( this.type ) &&

			createStandardXHR() || createActiveXHR();
	} :
	// For all other browsers, use the standard XMLHttpRequest object
	createStandardXHR;

var xhrId = 0,
	xhrCallbacks = {},
	xhrSupported = jQuery.ajaxSettings.xhr();

// Support: IE<10
// Open requests must be manually aborted on unload (#5280)
if ( window.ActiveXObject ) {
	jQuery( window ).on( "unload", function() {
		for ( var key in xhrCallbacks ) {
			xhrCallbacks[ key ]( undefined, true );
		}
	});
}

// Determine support properties
support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
xhrSupported = support.ajax = !!xhrSupported;

// Create transport if the browser can provide an xhr
if ( xhrSupported ) {

	jQuery.ajaxTransport(function( options ) {
		// Cross domain only allowed if supported through XMLHttpRequest
		if ( !options.crossDomain || support.cors ) {

			var callback;

			return {
				send: function( headers, complete ) {
					var i,
						xhr = options.xhr(),
						id = ++xhrId;

					// Open the socket
					xhr.open( options.type, options.url, options.async, options.username, options.password );

					// Apply custom fields if provided
					if ( options.xhrFields ) {
						for ( i in options.xhrFields ) {
							xhr[ i ] = options.xhrFields[ i ];
						}
					}

					// Override mime type if needed
					if ( options.mimeType && xhr.overrideMimeType ) {
						xhr.overrideMimeType( options.mimeType );
					}

					// X-Requested-With header
					// For cross-domain requests, seeing as conditions for a preflight are
					// akin to a jigsaw puzzle, we simply never set it to be sure.
					// (it can always be set on a per-request basis or even using ajaxSetup)
					// For same-domain requests, won't change header if already provided.
					if ( !options.crossDomain && !headers["X-Requested-With"] ) {
						headers["X-Requested-With"] = "XMLHttpRequest";
					}

					// Set headers
					for ( i in headers ) {
						// Support: IE<9
						// IE's ActiveXObject throws a 'Type Mismatch' exception when setting
						// request header to a null-value.
						//
						// To keep consistent with other XHR implementations, cast the value
						// to string and ignore `undefined`.
						if ( headers[ i ] !== undefined ) {
							xhr.setRequestHeader( i, headers[ i ] + "" );
						}
					}

					// Do send the request
					// This may raise an exception which is actually
					// handled in jQuery.ajax (so no try/catch here)
					xhr.send( ( options.hasContent && options.data ) || null );

					// Listener
					callback = function( _, isAbort ) {
						var status, statusText, responses;

						// Was never called and is aborted or complete
						if ( callback && ( isAbort || xhr.readyState === 4 ) ) {
							// Clean up
							delete xhrCallbacks[ id ];
							callback = undefined;
							xhr.onreadystatechange = jQuery.noop;

							// Abort manually if needed
							if ( isAbort ) {
								if ( xhr.readyState !== 4 ) {
									xhr.abort();
								}
							} else {
								responses = {};
								status = xhr.status;

								// Support: IE<10
								// Accessing binary-data responseText throws an exception
								// (#11426)
								if ( typeof xhr.responseText === "string" ) {
									responses.text = xhr.responseText;
								}

								// Firefox throws an exception when accessing
								// statusText for faulty cross-domain requests
								try {
									statusText = xhr.statusText;
								} catch( e ) {
									// We normalize with Webkit giving an empty statusText
									statusText = "";
								}

								// Filter status for non standard behaviors

								// If the request is local and we have data: assume a success
								// (success with no data won't get notified, that's the best we
								// can do given current implementations)
								if ( !status && options.isLocal && !options.crossDomain ) {
									status = responses.text ? 200 : 404;
								// IE - #1450: sometimes returns 1223 when it should be 204
								} else if ( status === 1223 ) {
									status = 204;
								}
							}
						}

						// Call complete if needed
						if ( responses ) {
							complete( status, statusText, responses, xhr.getAllResponseHeaders() );
						}
					};

					if ( !options.async ) {
						// if we're in sync mode we fire the callback
						callback();
					} else if ( xhr.readyState === 4 ) {
						// (IE6 & IE7) if it's in cache and has been
						// retrieved directly we need to fire the callback
						setTimeout( callback );
					} else {
						// Add to the list of active xhr callbacks
						xhr.onreadystatechange = xhrCallbacks[ id ] = callback;
					}
				},

				abort: function() {
					if ( callback ) {
						callback( undefined, true );
					}
				}
			};
		}
	});
}

// Functions to create xhrs
function createStandardXHR() {
	try {
		return new window.XMLHttpRequest();
	} catch( e ) {}
}

function createActiveXHR() {
	try {
		return new window.ActiveXObject( "Microsoft.XMLHTTP" );
	} catch( e ) {}
}




// Install script dataType
jQuery.ajaxSetup({
	accepts: {
		script: "text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"
	},
	contents: {
		script: /(?:java|ecma)script/
	},
	converters: {
		"text script": function( text ) {
			jQuery.globalEval( text );
			return text;
		}
	}
});

// Handle cache's special case and global
jQuery.ajaxPrefilter( "script", function( s ) {
	if ( s.cache === undefined ) {
		s.cache = false;
	}
	if ( s.crossDomain ) {
		s.type = "GET";
		s.global = false;
	}
});

// Bind script tag hack transport
jQuery.ajaxTransport( "script", function(s) {

	// This transport only deals with cross domain requests
	if ( s.crossDomain ) {

		var script,
			head = document.head || jQuery("head")[0] || document.documentElement;

		return {

			send: function( _, callback ) {

				script = document.createElement("script");

				script.async = true;

				if ( s.scriptCharset ) {
					script.charset = s.scriptCharset;
				}

				script.src = s.url;

				// Attach handlers for all browsers
				script.onload = script.onreadystatechange = function( _, isAbort ) {

					if ( isAbort || !script.readyState || /loaded|complete/.test( script.readyState ) ) {

						// Handle memory leak in IE
						script.onload = script.onreadystatechange = null;

						// Remove the script
						if ( script.parentNode ) {
							script.parentNode.removeChild( script );
						}

						// Dereference the script
						script = null;

						// Callback if not abort
						if ( !isAbort ) {
							callback( 200, "success" );
						}
					}
				};

				// Circumvent IE6 bugs with base elements (#2709 and #4378) by prepending
				// Use native DOM manipulation to avoid our domManip AJAX trickery
				head.insertBefore( script, head.firstChild );
			},

			abort: function() {
				if ( script ) {
					script.onload( undefined, true );
				}
			}
		};
	}
});




var oldCallbacks = [],
	rjsonp = /(=)\?(?=&|$)|\?\?/;

// Default jsonp settings
jQuery.ajaxSetup({
	jsonp: "callback",
	jsonpCallback: function() {
		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
		this[ callback ] = true;
		return callback;
	}
});

// Detect, normalize options and install callbacks for jsonp requests
jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {

	var callbackName, overwritten, responseContainer,
		jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
			"url" :
			typeof s.data === "string" && !( s.contentType || "" ).indexOf("application/x-www-form-urlencoded") && rjsonp.test( s.data ) && "data"
		);

	// Handle iff the expected data type is "jsonp" or we have a parameter to set
	if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {

		// Get callback name, remembering preexisting value associated with it
		callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
			s.jsonpCallback() :
			s.jsonpCallback;

		// Insert callback into url or form data
		if ( jsonProp ) {
			s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
		} else if ( s.jsonp !== false ) {
			s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
		}

		// Use data converter to retrieve json after script execution
		s.converters["script json"] = function() {
			if ( !responseContainer ) {
				jQuery.error( callbackName + " was not called" );
			}
			return responseContainer[ 0 ];
		};

		// force json dataType
		s.dataTypes[ 0 ] = "json";

		// Install callback
		overwritten = window[ callbackName ];
		window[ callbackName ] = function() {
			responseContainer = arguments;
		};

		// Clean-up function (fires after converters)
		jqXHR.always(function() {
			// Restore preexisting value
			window[ callbackName ] = overwritten;

			// Save back as free
			if ( s[ callbackName ] ) {
				// make sure that re-using the options doesn't screw things around
				s.jsonpCallback = originalSettings.jsonpCallback;

				// save the callback name for future use
				oldCallbacks.push( callbackName );
			}

			// Call if it was a function and we have a response
			if ( responseContainer && jQuery.isFunction( overwritten ) ) {
				overwritten( responseContainer[ 0 ] );
			}

			responseContainer = overwritten = undefined;
		});

		// Delegate to script
		return "script";
	}
});




// data: string of html
// context (optional): If specified, the fragment will be created in this context, defaults to document
// keepScripts (optional): If true, will include scripts passed in the html string
jQuery.parseHTML = function( data, context, keepScripts ) {
	if ( !data || typeof data !== "string" ) {
		return null;
	}
	if ( typeof context === "boolean" ) {
		keepScripts = context;
		context = false;
	}
	context = context || document;

	var parsed = rsingleTag.exec( data ),
		scripts = !keepScripts && [];

	// Single tag
	if ( parsed ) {
		return [ context.createElement( parsed[1] ) ];
	}

	parsed = jQuery.buildFragment( [ data ], context, scripts );

	if ( scripts && scripts.length ) {
		jQuery( scripts ).remove();
	}

	return jQuery.merge( [], parsed.childNodes );
};


// Keep a copy of the old load method
var _load = jQuery.fn.load;

/**
 * Load a url into a page
 */
jQuery.fn.load = function( url, params, callback ) {
	if ( typeof url !== "string" && _load ) {
		return _load.apply( this, arguments );
	}

	var selector, response, type,
		self = this,
		off = url.indexOf(" ");

	if ( off >= 0 ) {
		selector = url.slice( off, url.length );
		url = url.slice( 0, off );
	}

	// If it's a function
	if ( jQuery.isFunction( params ) ) {

		// We assume that it's the callback
		callback = params;
		params = undefined;

	// Otherwise, build a param string
	} else if ( params && typeof params === "object" ) {
		type = "POST";
	}

	// If we have elements to modify, make the request
	if ( self.length > 0 ) {
		jQuery.ajax({
			url: url,

			// if "type" variable is undefined, then "GET" method will be used
			type: type,
			dataType: "html",
			data: params
		}).done(function( responseText ) {

			// Save response for use in complete callback
			response = arguments;

			self.html( selector ?

				// If a selector was specified, locate the right elements in a dummy div
				// Exclude scripts to avoid IE 'Permission Denied' errors
				jQuery("<div>").append( jQuery.parseHTML( responseText ) ).find( selector ) :

				// Otherwise use the full result
				responseText );

		}).complete( callback && function( jqXHR, status ) {
			self.each( callback, response || [ jqXHR.responseText, status, jqXHR ] );
		});
	}

	return this;
};




jQuery.expr.filters.animated = function( elem ) {
	return jQuery.grep(jQuery.timers, function( fn ) {
		return elem === fn.elem;
	}).length;
};





var docElem = window.document.documentElement;

/**
 * Gets a window from an element
 */
function getWindow( elem ) {
	return jQuery.isWindow( elem ) ?
		elem :
		elem.nodeType === 9 ?
			elem.defaultView || elem.parentWindow :
			false;
}

jQuery.offset = {
	setOffset: function( elem, options, i ) {
		var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
			position = jQuery.css( elem, "position" ),
			curElem = jQuery( elem ),
			props = {};

		// set position first, in-case top/left are set even on static elem
		if ( position === "static" ) {
			elem.style.position = "relative";
		}

		curOffset = curElem.offset();
		curCSSTop = jQuery.css( elem, "top" );
		curCSSLeft = jQuery.css( elem, "left" );
		calculatePosition = ( position === "absolute" || position === "fixed" ) &&
			jQuery.inArray("auto", [ curCSSTop, curCSSLeft ] ) > -1;

		// need to be able to calculate position if either top or left is auto and position is either absolute or fixed
		if ( calculatePosition ) {
			curPosition = curElem.position();
			curTop = curPosition.top;
			curLeft = curPosition.left;
		} else {
			curTop = parseFloat( curCSSTop ) || 0;
			curLeft = parseFloat( curCSSLeft ) || 0;
		}

		if ( jQuery.isFunction( options ) ) {
			options = options.call( elem, i, curOffset );
		}

		if ( options.top != null ) {
			props.top = ( options.top - curOffset.top ) + curTop;
		}
		if ( options.left != null ) {
			props.left = ( options.left - curOffset.left ) + curLeft;
		}

		if ( "using" in options ) {
			options.using.call( elem, props );
		} else {
			curElem.css( props );
		}
	}
};

jQuery.fn.extend({
	offset: function( options ) {
		if ( arguments.length ) {
			return options === undefined ?
				this :
				this.each(function( i ) {
					jQuery.offset.setOffset( this, options, i );
				});
		}

		var docElem, win,
			box = { top: 0, left: 0 },
			elem = this[ 0 ],
			doc = elem && elem.ownerDocument;

		if ( !doc ) {
			return;
		}

		docElem = doc.documentElement;

		// Make sure it's not a disconnected DOM node
		if ( !jQuery.contains( docElem, elem ) ) {
			return box;
		}

		// If we don't have gBCR, just use 0,0 rather than error
		// BlackBerry 5, iOS 3 (original iPhone)
		if ( typeof elem.getBoundingClientRect !== strundefined ) {
			box = elem.getBoundingClientRect();
		}
		win = getWindow( doc );
		return {
			top: box.top  + ( win.pageYOffset || docElem.scrollTop )  - ( docElem.clientTop  || 0 ),
			left: box.left + ( win.pageXOffset || docElem.scrollLeft ) - ( docElem.clientLeft || 0 )
		};
	},

	position: function() {
		if ( !this[ 0 ] ) {
			return;
		}

		var offsetParent, offset,
			parentOffset = { top: 0, left: 0 },
			elem = this[ 0 ];

		// fixed elements are offset from window (parentOffset = {top:0, left: 0}, because it is its only offset parent
		if ( jQuery.css( elem, "position" ) === "fixed" ) {
			// we assume that getBoundingClientRect is available when computed position is fixed
			offset = elem.getBoundingClientRect();
		} else {
			// Get *real* offsetParent
			offsetParent = this.offsetParent();

			// Get correct offsets
			offset = this.offset();
			if ( !jQuery.nodeName( offsetParent[ 0 ], "html" ) ) {
				parentOffset = offsetParent.offset();
			}

			// Add offsetParent borders
			parentOffset.top  += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true );
			parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true );
		}

		// Subtract parent offsets and element margins
		// note: when an element has margin: auto the offsetLeft and marginLeft
		// are the same in Safari causing offset.left to incorrectly be 0
		return {
			top:  offset.top  - parentOffset.top - jQuery.css( elem, "marginTop", true ),
			left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true)
		};
	},

	offsetParent: function() {
		return this.map(function() {
			var offsetParent = this.offsetParent || docElem;

			while ( offsetParent && ( !jQuery.nodeName( offsetParent, "html" ) && jQuery.css( offsetParent, "position" ) === "static" ) ) {
				offsetParent = offsetParent.offsetParent;
			}
			return offsetParent || docElem;
		});
	}
});

// Create scrollLeft and scrollTop methods
jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
	var top = /Y/.test( prop );

	jQuery.fn[ method ] = function( val ) {
		return access( this, function( elem, method, val ) {
			var win = getWindow( elem );

			if ( val === undefined ) {
				return win ? (prop in win) ? win[ prop ] :
					win.document.documentElement[ method ] :
					elem[ method ];
			}

			if ( win ) {
				win.scrollTo(
					!top ? val : jQuery( win ).scrollLeft(),
					top ? val : jQuery( win ).scrollTop()
				);

			} else {
				elem[ method ] = val;
			}
		}, method, val, arguments.length, null );
	};
});

// Add the top/left cssHooks using jQuery.fn.position
// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
// getComputedStyle returns percent when specified for top/left/bottom/right
// rather than make the css module depend on the offset module, we just check for it here
jQuery.each( [ "top", "left" ], function( i, prop ) {
	jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
		function( elem, computed ) {
			if ( computed ) {
				computed = curCSS( elem, prop );
				// if curCSS returns percentage, fallback to offset
				return rnumnonpx.test( computed ) ?
					jQuery( elem ).position()[ prop ] + "px" :
					computed;
			}
		}
	);
});


// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name }, function( defaultExtra, funcName ) {
		// margin is only for outerHeight, outerWidth
		jQuery.fn[ funcName ] = function( margin, value ) {
			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );

			return access( this, function( elem, type, value ) {
				var doc;

				if ( jQuery.isWindow( elem ) ) {
					// As of 5/8/2012 this will yield incorrect results for Mobile Safari, but there
					// isn't a whole lot we can do. See pull request at this URL for discussion:
					// https://github.com/jquery/jquery/pull/764
					return elem.document.documentElement[ "client" + name ];
				}

				// Get document width or height
				if ( elem.nodeType === 9 ) {
					doc = elem.documentElement;

					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height], whichever is greatest
					// unfortunately, this causes bug #3838 in IE6/8 only, but there is currently no good, small way to fix it.
					return Math.max(
						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
						elem.body[ "offset" + name ], doc[ "offset" + name ],
						doc[ "client" + name ]
					);
				}

				return value === undefined ?
					// Get width or height on the element, requesting but not forcing parseFloat
					jQuery.css( elem, type, extra ) :

					// Set width or height on the element
					jQuery.style( elem, type, value, extra );
			}, type, chainable ? margin : undefined, chainable, null );
		};
	});
});


// The number of elements contained in the matched element set
jQuery.fn.size = function() {
	return this.length;
};

jQuery.fn.andSelf = jQuery.fn.addBack;




// Register as a named AMD module, since jQuery can be concatenated with other
// files that may use define, but not via a proper concatenation script that
// understands anonymous AMD modules. A named AMD is safest and most robust
// way to register. Lowercase jquery is used because AMD module names are
// derived from file names, and jQuery is normally delivered in a lowercase
// file name. Do this after creating the global so that if an AMD module wants
// to call noConflict to hide this version of jQuery, it will work.
if ( typeof define === "function" && define.amd ) {
	define( "jquery", [], function() {
		return jQuery;
	});
}




var
	// Map over jQuery in case of overwrite
	_jQuery = window.jQuery,

	// Map over the $ in case of overwrite
	_$ = window.$;

jQuery.noConflict = function( deep ) {
	if ( window.$ === jQuery ) {
		window.$ = _$;
	}

	if ( deep && window.jQuery === jQuery ) {
		window.jQuery = _jQuery;
	}

	return jQuery;
};

// Expose jQuery and $ identifiers, even in
// AMD (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
// and CommonJS for browser emulators (#13566)
if ( typeof noGlobal === strundefined ) {
	window.jQuery = window.$ = jQuery;
}




return jQuery;

}));
/* --------------------------------------------------------------
         js/libs/jquery-ui-1.10.1.custom.js
   -------------------------------------------------------------- */
/*! jQuery UI - v1.10.1 - 2013-03-06
* http://jqueryui.com
* Includes: jquery.ui.core.js, jquery.ui.widget.js, jquery.ui.mouse.js, jquery.ui.position.js, jquery.ui.draggable.js, jquery.ui.droppable.js, jquery.ui.resizable.js, jquery.ui.selectable.js, jquery.ui.sortable.js, jquery.ui.accordion.js, jquery.ui.autocomplete.js, jquery.ui.button.js, jquery.ui.datepicker.js, jquery.ui.dialog.js, jquery.ui.menu.js, jquery.ui.progressbar.js, jquery.ui.slider.js, jquery.ui.spinner.js, jquery.ui.tabs.js, jquery.ui.tooltip.js, jquery.ui.effect.js, jquery.ui.effect-blind.js, jquery.ui.effect-bounce.js, jquery.ui.effect-clip.js, jquery.ui.effect-drop.js, jquery.ui.effect-explode.js, jquery.ui.effect-fade.js, jquery.ui.effect-fold.js, jquery.ui.effect-highlight.js, jquery.ui.effect-pulsate.js, jquery.ui.effect-scale.js, jquery.ui.effect-shake.js, jquery.ui.effect-slide.js, jquery.ui.effect-transfer.js
* Copyright (c) 2013 jQuery Foundation and other contributors Licensed MIT */

(function( $, undefined ) {

var uuid = 0,
	runiqueId = /^ui-id-\d+$/;

// prevent duplicate loading
// this is only a problem because we proxy existing functions
// and we don't want to double proxy them
$.ui = $.ui || {};
if ( $.ui.version ) {
	return;
}

$.extend( $.ui, {
	version: "1.10.1",

	keyCode: {
		BACKSPACE: 8,
		COMMA: 188,
		DELETE: 46,
		DOWN: 40,
		END: 35,
		ENTER: 13,
		ESCAPE: 27,
		HOME: 36,
		LEFT: 37,
		NUMPAD_ADD: 107,
		NUMPAD_DECIMAL: 110,
		NUMPAD_DIVIDE: 111,
		NUMPAD_ENTER: 108,
		NUMPAD_MULTIPLY: 106,
		NUMPAD_SUBTRACT: 109,
		PAGE_DOWN: 34,
		PAGE_UP: 33,
		PERIOD: 190,
		RIGHT: 39,
		SPACE: 32,
		TAB: 9,
		UP: 38
	}
});

// plugins
$.fn.extend({
	_focus: $.fn.focus,
	focus: function( delay, fn ) {
		return typeof delay === "number" ?
			this.each(function() {
				var elem = this;
				setTimeout(function() {
					$( elem ).focus();
					if ( fn ) {
						fn.call( elem );
					}
				}, delay );
			}) :
			this._focus.apply( this, arguments );
	},

	scrollParent: function() {
		var scrollParent;
		if (($.ui.ie && (/(static|relative)/).test(this.css("position"))) || (/absolute/).test(this.css("position"))) {
			scrollParent = this.parents().filter(function() {
				return (/(relative|absolute|fixed)/).test($.css(this,"position")) && (/(auto|scroll)/).test($.css(this,"overflow")+$.css(this,"overflow-y")+$.css(this,"overflow-x"));
			}).eq(0);
		} else {
			scrollParent = this.parents().filter(function() {
				return (/(auto|scroll)/).test($.css(this,"overflow")+$.css(this,"overflow-y")+$.css(this,"overflow-x"));
			}).eq(0);
		}

		return (/fixed/).test(this.css("position")) || !scrollParent.length ? $(document) : scrollParent;
	},

	zIndex: function( zIndex ) {
		if ( zIndex !== undefined ) {
			return this.css( "zIndex", zIndex );
		}

		if ( this.length ) {
			var elem = $( this[ 0 ] ), position, value;
			while ( elem.length && elem[ 0 ] !== document ) {
				// Ignore z-index if position is set to a value where z-index is ignored by the browser
				// This makes behavior of this function consistent across browsers
				// WebKit always returns auto if the element is positioned
				position = elem.css( "position" );
				if ( position === "absolute" || position === "relative" || position === "fixed" ) {
					// IE returns 0 when zIndex is not specified
					// other browsers return a string
					// we ignore the case of nested elements with an explicit value of 0
					// <div style="z-index: -10;"><div style="z-index: 0;"></div></div>
					value = parseInt( elem.css( "zIndex" ), 10 );
					if ( !isNaN( value ) && value !== 0 ) {
						return value;
					}
				}
				elem = elem.parent();
			}
		}

		return 0;
	},

	uniqueId: function() {
		return this.each(function() {
			if ( !this.id ) {
				this.id = "ui-id-" + (++uuid);
			}
		});
	},

	removeUniqueId: function() {
		return this.each(function() {
			if ( runiqueId.test( this.id ) ) {
				$( this ).removeAttr( "id" );
			}
		});
	}
});

// selectors
function focusable( element, isTabIndexNotNaN ) {
	var map, mapName, img,
		nodeName = element.nodeName.toLowerCase();
	if ( "area" === nodeName ) {
		map = element.parentNode;
		mapName = map.name;
		if ( !element.href || !mapName || map.nodeName.toLowerCase() !== "map" ) {
			return false;
		}
		img = $( "img[usemap=#" + mapName + "]" )[0];
		return !!img && visible( img );
	}
	return ( /input|select|textarea|button|object/.test( nodeName ) ?
		!element.disabled :
		"a" === nodeName ?
			element.href || isTabIndexNotNaN :
			isTabIndexNotNaN) &&
		// the element and all of its ancestors must be visible
		visible( element );
}

function visible( element ) {
	return $.expr.filters.visible( element ) &&
		!$( element ).parents().addBack().filter(function() {
			return $.css( this, "visibility" ) === "hidden";
		}).length;
}

$.extend( $.expr[ ":" ], {
	data: $.expr.createPseudo ?
		$.expr.createPseudo(function( dataName ) {
			return function( elem ) {
				return !!$.data( elem, dataName );
			};
		}) :
		// support: jQuery <1.8
		function( elem, i, match ) {
			return !!$.data( elem, match[ 3 ] );
		},

	focusable: function( element ) {
		return focusable( element, !isNaN( $.attr( element, "tabindex" ) ) );
	},

	tabbable: function( element ) {
		var tabIndex = $.attr( element, "tabindex" ),
			isTabIndexNaN = isNaN( tabIndex );
		return ( isTabIndexNaN || tabIndex >= 0 ) && focusable( element, !isTabIndexNaN );
	}
});

// support: jQuery <1.8
if ( !$( "<a>" ).outerWidth( 1 ).jquery ) {
	$.each( [ "Width", "Height" ], function( i, name ) {
		var side = name === "Width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ],
			type = name.toLowerCase(),
			orig = {
				innerWidth: $.fn.innerWidth,
				innerHeight: $.fn.innerHeight,
				outerWidth: $.fn.outerWidth,
				outerHeight: $.fn.outerHeight
			};

		function reduce( elem, size, border, margin ) {
			$.each( side, function() {
				size -= parseFloat( $.css( elem, "padding" + this ) ) || 0;
				if ( border ) {
					size -= parseFloat( $.css( elem, "border" + this + "Width" ) ) || 0;
				}
				if ( margin ) {
					size -= parseFloat( $.css( elem, "margin" + this ) ) || 0;
				}
			});
			return size;
		}

		$.fn[ "inner" + name ] = function( size ) {
			if ( size === undefined ) {
				return orig[ "inner" + name ].call( this );
			}

			return this.each(function() {
				$( this ).css( type, reduce( this, size ) + "px" );
			});
		};

		$.fn[ "outer" + name] = function( size, margin ) {
			if ( typeof size !== "number" ) {
				return orig[ "outer" + name ].call( this, size );
			}

			return this.each(function() {
				$( this).css( type, reduce( this, size, true, margin ) + "px" );
			});
		};
	});
}

// support: jQuery <1.8
if ( !$.fn.addBack ) {
	$.fn.addBack = function( selector ) {
		return this.add( selector == null ?
			this.prevObject : this.prevObject.filter( selector )
		);
	};
}

// support: jQuery 1.6.1, 1.6.2 (http://bugs.jquery.com/ticket/9413)
if ( $( "<a>" ).data( "a-b", "a" ).removeData( "a-b" ).data( "a-b" ) ) {
	$.fn.removeData = (function( removeData ) {
		return function( key ) {
			if ( arguments.length ) {
				return removeData.call( this, $.camelCase( key ) );
			} else {
				return removeData.call( this );
			}
		};
	})( $.fn.removeData );
}





// deprecated
$.ui.ie = !!/msie [\w.]+/.exec( navigator.userAgent.toLowerCase() );

$.support.selectstart = "onselectstart" in document.createElement( "div" );
$.fn.extend({
	disableSelection: function() {
		return this.bind( ( $.support.selectstart ? "selectstart" : "mousedown" ) +
			".ui-disableSelection", function( event ) {
				event.preventDefault();
			});
	},

	enableSelection: function() {
		return this.unbind( ".ui-disableSelection" );
	}
});

$.extend( $.ui, {
	// $.ui.plugin is deprecated.  Use the proxy pattern instead.
	plugin: {
		add: function( module, option, set ) {
			var i,
				proto = $.ui[ module ].prototype;
			for ( i in set ) {
				proto.plugins[ i ] = proto.plugins[ i ] || [];
				proto.plugins[ i ].push( [ option, set[ i ] ] );
			}
		},
		call: function( instance, name, args ) {
			var i,
				set = instance.plugins[ name ];
			if ( !set || !instance.element[ 0 ].parentNode || instance.element[ 0 ].parentNode.nodeType === 11 ) {
				return;
			}

			for ( i = 0; i < set.length; i++ ) {
				if ( instance.options[ set[ i ][ 0 ] ] ) {
					set[ i ][ 1 ].apply( instance.element, args );
				}
			}
		}
	},

	// only used by resizable
	hasScroll: function( el, a ) {

		//If overflow is hidden, the element might have extra content, but the user wants to hide it
		if ( $( el ).css( "overflow" ) === "hidden") {
			return false;
		}

		var scroll = ( a && a === "left" ) ? "scrollLeft" : "scrollTop",
			has = false;

		if ( el[ scroll ] > 0 ) {
			return true;
		}

		// TODO: determine which cases actually cause this to happen
		// if the element doesn't have the scroll set, see if it's possible to
		// set the scroll
		el[ scroll ] = 1;
		has = ( el[ scroll ] > 0 );
		el[ scroll ] = 0;
		return has;
	}
});

})( jQuery );
(function( $, undefined ) {

var uuid = 0,
	slice = Array.prototype.slice,
	_cleanData = $.cleanData;
$.cleanData = function( elems ) {
	for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) {
		try {
			$( elem ).triggerHandler( "remove" );
		// http://bugs.jquery.com/ticket/8235
		} catch( e ) {}
	}
	_cleanData( elems );
};

$.widget = function( name, base, prototype ) {
	var fullName, existingConstructor, constructor, basePrototype,
		// proxiedPrototype allows the provided prototype to remain unmodified
		// so that it can be used as a mixin for multiple widgets (#8876)
		proxiedPrototype = {},
		namespace = name.split( "." )[ 0 ];

	name = name.split( "." )[ 1 ];
	fullName = namespace + "-" + name;

	if ( !prototype ) {
		prototype = base;
		base = $.Widget;
	}

	// create selector for plugin
	$.expr[ ":" ][ fullName.toLowerCase() ] = function( elem ) {
		return !!$.data( elem, fullName );
	};

	$[ namespace ] = $[ namespace ] || {};
	existingConstructor = $[ namespace ][ name ];
	constructor = $[ namespace ][ name ] = function( options, element ) {
		// allow instantiation without "new" keyword
		if ( !this._createWidget ) {
			return new constructor( options, element );
		}

		// allow instantiation without initializing for simple inheritance
		// must use "new" keyword (the code above always passes args)
		if ( arguments.length ) {
			this._createWidget( options, element );
		}
	};
	// extend with the existing constructor to carry over any static properties
	$.extend( constructor, existingConstructor, {
		version: prototype.version,
		// copy the object used to create the prototype in case we need to
		// redefine the widget later
		_proto: $.extend( {}, prototype ),
		// track widgets that inherit from this widget in case this widget is
		// redefined after a widget inherits from it
		_childConstructors: []
	});

	basePrototype = new base();
	// we need to make the options hash a property directly on the new instance
	// otherwise we'll modify the options hash on the prototype that we're
	// inheriting from
	basePrototype.options = $.widget.extend( {}, basePrototype.options );
	$.each( prototype, function( prop, value ) {
		if ( !$.isFunction( value ) ) {
			proxiedPrototype[ prop ] = value;
			return;
		}
		proxiedPrototype[ prop ] = (function() {
			var _super = function() {
					return base.prototype[ prop ].apply( this, arguments );
				},
				_superApply = function( args ) {
					return base.prototype[ prop ].apply( this, args );
				};
			return function() {
				var __super = this._super,
					__superApply = this._superApply,
					returnValue;

				this._super = _super;
				this._superApply = _superApply;

				returnValue = value.apply( this, arguments );

				this._super = __super;
				this._superApply = __superApply;

				return returnValue;
			};
		})();
	});
	constructor.prototype = $.widget.extend( basePrototype, {
		// TODO: remove support for widgetEventPrefix
		// always use the name + a colon as the prefix, e.g., draggable:start
		// don't prefix for widgets that aren't DOM-based
		widgetEventPrefix: existingConstructor ? basePrototype.widgetEventPrefix : name
	}, proxiedPrototype, {
		constructor: constructor,
		namespace: namespace,
		widgetName: name,
		widgetFullName: fullName
	});

	// If this widget is being redefined then we need to find all widgets that
	// are inheriting from it and redefine all of them so that they inherit from
	// the new version of this widget. We're essentially trying to replace one
	// level in the prototype chain.
	if ( existingConstructor ) {
		$.each( existingConstructor._childConstructors, function( i, child ) {
			var childPrototype = child.prototype;

			// redefine the child widget using the same prototype that was
			// originally used, but inherit from the new version of the base
			$.widget( childPrototype.namespace + "." + childPrototype.widgetName, constructor, child._proto );
		});
		// remove the list of existing child constructors from the old constructor
		// so the old child constructors can be garbage collected
		delete existingConstructor._childConstructors;
	} else {
		base._childConstructors.push( constructor );
	}

	$.widget.bridge( name, constructor );
};

$.widget.extend = function( target ) {
	var input = slice.call( arguments, 1 ),
		inputIndex = 0,
		inputLength = input.length,
		key,
		value;
	for ( ; inputIndex < inputLength; inputIndex++ ) {
		for ( key in input[ inputIndex ] ) {
			value = input[ inputIndex ][ key ];
			if ( input[ inputIndex ].hasOwnProperty( key ) && value !== undefined ) {
				// Clone objects
				if ( $.isPlainObject( value ) ) {
					target[ key ] = $.isPlainObject( target[ key ] ) ?
						$.widget.extend( {}, target[ key ], value ) :
						// Don't extend strings, arrays, etc. with objects
						$.widget.extend( {}, value );
				// Copy everything else by reference
				} else {
					target[ key ] = value;
				}
			}
		}
	}
	return target;
};

$.widget.bridge = function( name, object ) {
	var fullName = object.prototype.widgetFullName || name;
	$.fn[ name ] = function( options ) {
		var isMethodCall = typeof options === "string",
			args = slice.call( arguments, 1 ),
			returnValue = this;

		// allow multiple hashes to be passed on init
		options = !isMethodCall && args.length ?
			$.widget.extend.apply( null, [ options ].concat(args) ) :
			options;

		if ( isMethodCall ) {
			this.each(function() {
				var methodValue,
					instance = $.data( this, fullName );
				if ( !instance ) {
					return $.error( "cannot call methods on " + name + " prior to initialization; " +
						"attempted to call method '" + options + "'" );
				}
				if ( !$.isFunction( instance[options] ) || options.charAt( 0 ) === "_" ) {
					return $.error( "no such method '" + options + "' for " + name + " widget instance" );
				}
				methodValue = instance[ options ].apply( instance, args );
				if ( methodValue !== instance && methodValue !== undefined ) {
					returnValue = methodValue && methodValue.jquery ?
						returnValue.pushStack( methodValue.get() ) :
						methodValue;
					return false;
				}
			});
		} else {
			this.each(function() {
				var instance = $.data( this, fullName );
				if ( instance ) {
					instance.option( options || {} )._init();
				} else {
					$.data( this, fullName, new object( options, this ) );
				}
			});
		}

		return returnValue;
	};
};

$.Widget = function( /* options, element */ ) {};
$.Widget._childConstructors = [];

$.Widget.prototype = {
	widgetName: "widget",
	widgetEventPrefix: "",
	defaultElement: "<div>",
	options: {
		disabled: false,

		// callbacks
		create: null
	},
	_createWidget: function( options, element ) {
		element = $( element || this.defaultElement || this )[ 0 ];
		this.element = $( element );
		this.uuid = uuid++;
		this.eventNamespace = "." + this.widgetName + this.uuid;
		this.options = $.widget.extend( {},
			this.options,
			this._getCreateOptions(),
			options );

		this.bindings = $();
		this.hoverable = $();
		this.focusable = $();

		if ( element !== this ) {
			$.data( element, this.widgetFullName, this );
			this._on( true, this.element, {
				remove: function( event ) {
					if ( event.target === element ) {
						this.destroy();
					}
				}
			});
			this.document = $( element.style ?
				// element within the document
				element.ownerDocument :
				// element is window or document
				element.document || element );
			this.window = $( this.document[0].defaultView || this.document[0].parentWindow );
		}

		this._create();
		this._trigger( "create", null, this._getCreateEventData() );
		this._init();
	},
	_getCreateOptions: $.noop,
	_getCreateEventData: $.noop,
	_create: $.noop,
	_init: $.noop,

	destroy: function() {
		this._destroy();
		// we can probably remove the unbind calls in 2.0
		// all event bindings should go through this._on()
		this.element
			.unbind( this.eventNamespace )
			// 1.9 BC for #7810
			// TODO remove dual storage
			.removeData( this.widgetName )
			.removeData( this.widgetFullName )
			// support: jquery <1.6.3
			// http://bugs.jquery.com/ticket/9413
			.removeData( $.camelCase( this.widgetFullName ) );
		this.widget()
			.unbind( this.eventNamespace )
			.removeAttr( "aria-disabled" )
			.removeClass(
				this.widgetFullName + "-disabled " +
				"ui-state-disabled" );

		// clean up events and states
		this.bindings.unbind( this.eventNamespace );
		this.hoverable.removeClass( "ui-state-hover" );
		this.focusable.removeClass( "ui-state-focus" );
	},
	_destroy: $.noop,

	widget: function() {
		return this.element;
	},

	option: function( key, value ) {
		var options = key,
			parts,
			curOption,
			i;

		if ( arguments.length === 0 ) {
			// don't return a reference to the internal hash
			return $.widget.extend( {}, this.options );
		}

		if ( typeof key === "string" ) {
			// handle nested keys, e.g., "foo.bar" => { foo: { bar: ___ } }
			options = {};
			parts = key.split( "." );
			key = parts.shift();
			if ( parts.length ) {
				curOption = options[ key ] = $.widget.extend( {}, this.options[ key ] );
				for ( i = 0; i < parts.length - 1; i++ ) {
					curOption[ parts[ i ] ] = curOption[ parts[ i ] ] || {};
					curOption = curOption[ parts[ i ] ];
				}
				key = parts.pop();
				if ( value === undefined ) {
					return curOption[ key ] === undefined ? null : curOption[ key ];
				}
				curOption[ key ] = value;
			} else {
				if ( value === undefined ) {
					return this.options[ key ] === undefined ? null : this.options[ key ];
				}
				options[ key ] = value;
			}
		}

		this._setOptions( options );

		return this;
	},
	_setOptions: function( options ) {
		var key;

		for ( key in options ) {
			this._setOption( key, options[ key ] );
		}

		return this;
	},
	_setOption: function( key, value ) {
		this.options[ key ] = value;

		if ( key === "disabled" ) {
			this.widget()
				.toggleClass( this.widgetFullName + "-disabled ui-state-disabled", !!value )
				.attr( "aria-disabled", value );
			this.hoverable.removeClass( "ui-state-hover" );
			this.focusable.removeClass( "ui-state-focus" );
		}

		return this;
	},

	enable: function() {
		return this._setOption( "disabled", false );
	},
	disable: function() {
		return this._setOption( "disabled", true );
	},

	_on: function( suppressDisabledCheck, element, handlers ) {
		var delegateElement,
			instance = this;

		// no suppressDisabledCheck flag, shuffle arguments
		if ( typeof suppressDisabledCheck !== "boolean" ) {
			handlers = element;
			element = suppressDisabledCheck;
			suppressDisabledCheck = false;
		}

		// no element argument, shuffle and use this.element
		if ( !handlers ) {
			handlers = element;
			element = this.element;
			delegateElement = this.widget();
		} else {
			// accept selectors, DOM elements
			element = delegateElement = $( element );
			this.bindings = this.bindings.add( element );
		}

		$.each( handlers, function( event, handler ) {
			function handlerProxy() {
				// allow widgets to customize the disabled handling
				// - disabled as an array instead of boolean
				// - disabled class as method for disabling individual parts
				if ( !suppressDisabledCheck &&
						( instance.options.disabled === true ||
							$( this ).hasClass( "ui-state-disabled" ) ) ) {
					return;
				}
				return ( typeof handler === "string" ? instance[ handler ] : handler )
					.apply( instance, arguments );
			}

			// copy the guid so direct unbinding works
			if ( typeof handler !== "string" ) {
				handlerProxy.guid = handler.guid =
					handler.guid || handlerProxy.guid || $.guid++;
			}

			var match = event.match( /^(\w+)\s*(.*)$/ ),
				eventName = match[1] + instance.eventNamespace,
				selector = match[2];
			if ( selector ) {
				delegateElement.delegate( selector, eventName, handlerProxy );
			} else {
				element.bind( eventName, handlerProxy );
			}
		});
	},

	_off: function( element, eventName ) {
		eventName = (eventName || "").split( " " ).join( this.eventNamespace + " " ) + this.eventNamespace;
		element.unbind( eventName ).undelegate( eventName );
	},

	_delay: function( handler, delay ) {
		function handlerProxy() {
			return ( typeof handler === "string" ? instance[ handler ] : handler )
				.apply( instance, arguments );
		}
		var instance = this;
		return setTimeout( handlerProxy, delay || 0 );
	},

	_hoverable: function( element ) {
		this.hoverable = this.hoverable.add( element );
		this._on( element, {
			mouseenter: function( event ) {
				$( event.currentTarget ).addClass( "ui-state-hover" );
			},
			mouseleave: function( event ) {
				$( event.currentTarget ).removeClass( "ui-state-hover" );
			}
		});
	},

	_focusable: function( element ) {
		this.focusable = this.focusable.add( element );
		this._on( element, {
			focusin: function( event ) {
				$( event.currentTarget ).addClass( "ui-state-focus" );
			},
			focusout: function( event ) {
				$( event.currentTarget ).removeClass( "ui-state-focus" );
			}
		});
	},

	_trigger: function( type, event, data ) {
		var prop, orig,
			callback = this.options[ type ];

		data = data || {};
		event = $.Event( event );
		event.type = ( type === this.widgetEventPrefix ?
			type :
			this.widgetEventPrefix + type ).toLowerCase();
		// the original event may come from any element
		// so we need to reset the target on the new event
		event.target = this.element[ 0 ];

		// copy original event properties over to the new event
		orig = event.originalEvent;
		if ( orig ) {
			for ( prop in orig ) {
				if ( !( prop in event ) ) {
					event[ prop ] = orig[ prop ];
				}
			}
		}

		this.element.trigger( event, data );
		return !( $.isFunction( callback ) &&
			callback.apply( this.element[0], [ event ].concat( data ) ) === false ||
			event.isDefaultPrevented() );
	}
};

$.each( { show: "fadeIn", hide: "fadeOut" }, function( method, defaultEffect ) {
	$.Widget.prototype[ "_" + method ] = function( element, options, callback ) {
		if ( typeof options === "string" ) {
			options = { effect: options };
		}
		var hasOptions,
			effectName = !options ?
				method :
				options === true || typeof options === "number" ?
					defaultEffect :
					options.effect || defaultEffect;
		options = options || {};
		if ( typeof options === "number" ) {
			options = { duration: options };
		}
		hasOptions = !$.isEmptyObject( options );
		options.complete = callback;
		if ( options.delay ) {
			element.delay( options.delay );
		}
		if ( hasOptions && $.effects && $.effects.effect[ effectName ] ) {
			element[ method ]( options );
		} else if ( effectName !== method && element[ effectName ] ) {
			element[ effectName ]( options.duration, options.easing, callback );
		} else {
			element.queue(function( next ) {
				$( this )[ method ]();
				if ( callback ) {
					callback.call( element[ 0 ] );
				}
				next();
			});
		}
	};
});

})( jQuery );
(function( $, undefined ) {

var mouseHandled = false;
$( document ).mouseup( function() {
	mouseHandled = false;
});

$.widget("ui.mouse", {
	version: "1.10.1",
	options: {
		cancel: "input,textarea,button,select,option",
		distance: 1,
		delay: 0
	},
	_mouseInit: function() {
		var that = this;

		this.element
			.bind("mousedown."+this.widgetName, function(event) {
				return that._mouseDown(event);
			})
			.bind("click."+this.widgetName, function(event) {
				if (true === $.data(event.target, that.widgetName + ".preventClickEvent")) {
					$.removeData(event.target, that.widgetName + ".preventClickEvent");
					event.stopImmediatePropagation();
					return false;
				}
			});

		this.started = false;
	},

	// TODO: make sure destroying one instance of mouse doesn't mess with
	// other instances of mouse
	_mouseDestroy: function() {
		this.element.unbind("."+this.widgetName);
		if ( this._mouseMoveDelegate ) {
			$(document)
				.unbind("mousemove."+this.widgetName, this._mouseMoveDelegate)
				.unbind("mouseup."+this.widgetName, this._mouseUpDelegate);
		}
	},

	_mouseDown: function(event) {
		// don't let more than one widget handle mouseStart
		if( mouseHandled ) { return; }

		// we may have missed mouseup (out of window)
		(this._mouseStarted && this._mouseUp(event));

		this._mouseDownEvent = event;

		var that = this,
			btnIsLeft = (event.which === 1),
			// event.target.nodeName works around a bug in IE 8 with
			// disabled inputs (#7620)
			elIsCancel = (typeof this.options.cancel === "string" && event.target.nodeName ? $(event.target).closest(this.options.cancel).length : false);
		if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
			return true;
		}

		this.mouseDelayMet = !this.options.delay;
		if (!this.mouseDelayMet) {
			this._mouseDelayTimer = setTimeout(function() {
				that.mouseDelayMet = true;
			}, this.options.delay);
		}

		if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
			this._mouseStarted = (this._mouseStart(event) !== false);
			if (!this._mouseStarted) {
				event.preventDefault();
				return true;
			}
		}

		// Click event may never have fired (Gecko & Opera)
		if (true === $.data(event.target, this.widgetName + ".preventClickEvent")) {
			$.removeData(event.target, this.widgetName + ".preventClickEvent");
		}

		// these delegates are required to keep context
		this._mouseMoveDelegate = function(event) {
			return that._mouseMove(event);
		};
		this._mouseUpDelegate = function(event) {
			return that._mouseUp(event);
		};
		$(document)
			.bind("mousemove."+this.widgetName, this._mouseMoveDelegate)
			.bind("mouseup."+this.widgetName, this._mouseUpDelegate);

		event.preventDefault();

		mouseHandled = true;
		return true;
	},

	_mouseMove: function(event) {
		// IE mouseup check - mouseup happened when mouse was out of window
		if ($.ui.ie && ( !document.documentMode || document.documentMode < 9 ) && !event.button) {
			return this._mouseUp(event);
		}

		if (this._mouseStarted) {
			this._mouseDrag(event);
			return event.preventDefault();
		}

		if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
			this._mouseStarted =
				(this._mouseStart(this._mouseDownEvent, event) !== false);
			(this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
		}

		return !this._mouseStarted;
	},

	_mouseUp: function(event) {
		$(document)
			.unbind("mousemove."+this.widgetName, this._mouseMoveDelegate)
			.unbind("mouseup."+this.widgetName, this._mouseUpDelegate);

		if (this._mouseStarted) {
			this._mouseStarted = false;

			if (event.target === this._mouseDownEvent.target) {
				$.data(event.target, this.widgetName + ".preventClickEvent", true);
			}

			this._mouseStop(event);
		}

		return false;
	},

	_mouseDistanceMet: function(event) {
		return (Math.max(
				Math.abs(this._mouseDownEvent.pageX - event.pageX),
				Math.abs(this._mouseDownEvent.pageY - event.pageY)
			) >= this.options.distance
		);
	},

	_mouseDelayMet: function(/* event */) {
		return this.mouseDelayMet;
	},

	// These are placeholder methods, to be overriden by extending plugin
	_mouseStart: function(/* event */) {},
	_mouseDrag: function(/* event */) {},
	_mouseStop: function(/* event */) {},
	_mouseCapture: function(/* event */) { return true; }
});

})(jQuery);
(function( $, undefined ) {

$.ui = $.ui || {};

var cachedScrollbarWidth,
	max = Math.max,
	abs = Math.abs,
	round = Math.round,
	rhorizontal = /left|center|right/,
	rvertical = /top|center|bottom/,
	roffset = /[\+\-]\d+(\.[\d]+)?%?/,
	rposition = /^\w+/,
	rpercent = /%$/,
	_position = $.fn.position;

function getOffsets( offsets, width, height ) {
	return [
		parseFloat( offsets[ 0 ] ) * ( rpercent.test( offsets[ 0 ] ) ? width / 100 : 1 ),
		parseFloat( offsets[ 1 ] ) * ( rpercent.test( offsets[ 1 ] ) ? height / 100 : 1 )
	];
}

function parseCss( element, property ) {
	return parseInt( $.css( element, property ), 10 ) || 0;
}

function getDimensions( elem ) {
	var raw = elem[0];
	if ( raw.nodeType === 9 ) {
		return {
			width: elem.width(),
			height: elem.height(),
			offset: { top: 0, left: 0 }
		};
	}
	if ( $.isWindow( raw ) ) {
		return {
			width: elem.width(),
			height: elem.height(),
			offset: { top: elem.scrollTop(), left: elem.scrollLeft() }
		};
	}
	if ( raw.preventDefault ) {
		return {
			width: 0,
			height: 0,
			offset: { top: raw.pageY, left: raw.pageX }
		};
	}
	return {
		width: elem.outerWidth(),
		height: elem.outerHeight(),
		offset: elem.offset()
	};
}

$.position = {
	scrollbarWidth: function() {
		if ( cachedScrollbarWidth !== undefined ) {
			return cachedScrollbarWidth;
		}
		var w1, w2,
			div = $( "<div style='display:block;width:50px;height:50px;overflow:hidden;'><div style='height:100px;width:auto;'></div></div>" ),
			innerDiv = div.children()[0];

		$( "body" ).append( div );
		w1 = innerDiv.offsetWidth;
		div.css( "overflow", "scroll" );

		w2 = innerDiv.offsetWidth;

		if ( w1 === w2 ) {
			w2 = div[0].clientWidth;
		}

		div.remove();

		return (cachedScrollbarWidth = w1 - w2);
	},
	getScrollInfo: function( within ) {
		var overflowX = within.isWindow ? "" : within.element.css( "overflow-x" ),
			overflowY = within.isWindow ? "" : within.element.css( "overflow-y" ),
			hasOverflowX = overflowX === "scroll" ||
				( overflowX === "auto" && within.width < within.element[0].scrollWidth ),
			hasOverflowY = overflowY === "scroll" ||
				( overflowY === "auto" && within.height < within.element[0].scrollHeight );
		return {
			width: hasOverflowX ? $.position.scrollbarWidth() : 0,
			height: hasOverflowY ? $.position.scrollbarWidth() : 0
		};
	},
	getWithinInfo: function( element ) {
		var withinElement = $( element || window ),
			isWindow = $.isWindow( withinElement[0] );
		return {
			element: withinElement,
			isWindow: isWindow,
			offset: withinElement.offset() || { left: 0, top: 0 },
			scrollLeft: withinElement.scrollLeft(),
			scrollTop: withinElement.scrollTop(),
			width: isWindow ? withinElement.width() : withinElement.outerWidth(),
			height: isWindow ? withinElement.height() : withinElement.outerHeight()
		};
	}
};

$.fn.position = function( options ) {
	if ( !options || !options.of ) {
		return _position.apply( this, arguments );
	}

	// make a copy, we don't want to modify arguments
	options = $.extend( {}, options );

	var atOffset, targetWidth, targetHeight, targetOffset, basePosition, dimensions,
		target = $( options.of ),
		within = $.position.getWithinInfo( options.within ),
		scrollInfo = $.position.getScrollInfo( within ),
		collision = ( options.collision || "flip" ).split( " " ),
		offsets = {};

	dimensions = getDimensions( target );
	if ( target[0].preventDefault ) {
		// force left top to allow flipping
		options.at = "left top";
	}
	targetWidth = dimensions.width;
	targetHeight = dimensions.height;
	targetOffset = dimensions.offset;
	// clone to reuse original targetOffset later
	basePosition = $.extend( {}, targetOffset );

	// force my and at to have valid horizontal and vertical positions
	// if a value is missing or invalid, it will be converted to center
	$.each( [ "my", "at" ], function() {
		var pos = ( options[ this ] || "" ).split( " " ),
			horizontalOffset,
			verticalOffset;

		if ( pos.length === 1) {
			pos = rhorizontal.test( pos[ 0 ] ) ?
				pos.concat( [ "center" ] ) :
				rvertical.test( pos[ 0 ] ) ?
					[ "center" ].concat( pos ) :
					[ "center", "center" ];
		}
		pos[ 0 ] = rhorizontal.test( pos[ 0 ] ) ? pos[ 0 ] : "center";
		pos[ 1 ] = rvertical.test( pos[ 1 ] ) ? pos[ 1 ] : "center";

		// calculate offsets
		horizontalOffset = roffset.exec( pos[ 0 ] );
		verticalOffset = roffset.exec( pos[ 1 ] );
		offsets[ this ] = [
			horizontalOffset ? horizontalOffset[ 0 ] : 0,
			verticalOffset ? verticalOffset[ 0 ] : 0
		];

		// reduce to just the positions without the offsets
		options[ this ] = [
			rposition.exec( pos[ 0 ] )[ 0 ],
			rposition.exec( pos[ 1 ] )[ 0 ]
		];
	});

	// normalize collision option
	if ( collision.length === 1 ) {
		collision[ 1 ] = collision[ 0 ];
	}

	if ( options.at[ 0 ] === "right" ) {
		basePosition.left += targetWidth;
	} else if ( options.at[ 0 ] === "center" ) {
		basePosition.left += targetWidth / 2;
	}

	if ( options.at[ 1 ] === "bottom" ) {
		basePosition.top += targetHeight;
	} else if ( options.at[ 1 ] === "center" ) {
		basePosition.top += targetHeight / 2;
	}

	atOffset = getOffsets( offsets.at, targetWidth, targetHeight );
	basePosition.left += atOffset[ 0 ];
	basePosition.top += atOffset[ 1 ];

	return this.each(function() {
		var collisionPosition, using,
			elem = $( this ),
			elemWidth = elem.outerWidth(),
			elemHeight = elem.outerHeight(),
			marginLeft = parseCss( this, "marginLeft" ),
			marginTop = parseCss( this, "marginTop" ),
			collisionWidth = elemWidth + marginLeft + parseCss( this, "marginRight" ) + scrollInfo.width,
			collisionHeight = elemHeight + marginTop + parseCss( this, "marginBottom" ) + scrollInfo.height,
			position = $.extend( {}, basePosition ),
			myOffset = getOffsets( offsets.my, elem.outerWidth(), elem.outerHeight() );

		if ( options.my[ 0 ] === "right" ) {
			position.left -= elemWidth;
		} else if ( options.my[ 0 ] === "center" ) {
			position.left -= elemWidth / 2;
		}

		if ( options.my[ 1 ] === "bottom" ) {
			position.top -= elemHeight;
		} else if ( options.my[ 1 ] === "center" ) {
			position.top -= elemHeight / 2;
		}

		position.left += myOffset[ 0 ];
		position.top += myOffset[ 1 ];

		// if the browser doesn't support fractions, then round for consistent results
		if ( !$.support.offsetFractions ) {
			position.left = round( position.left );
			position.top = round( position.top );
		}

		collisionPosition = {
			marginLeft: marginLeft,
			marginTop: marginTop
		};

		$.each( [ "left", "top" ], function( i, dir ) {
			if ( $.ui.position[ collision[ i ] ] ) {
				$.ui.position[ collision[ i ] ][ dir ]( position, {
					targetWidth: targetWidth,
					targetHeight: targetHeight,
					elemWidth: elemWidth,
					elemHeight: elemHeight,
					collisionPosition: collisionPosition,
					collisionWidth: collisionWidth,
					collisionHeight: collisionHeight,
					offset: [ atOffset[ 0 ] + myOffset[ 0 ], atOffset [ 1 ] + myOffset[ 1 ] ],
					my: options.my,
					at: options.at,
					within: within,
					elem : elem
				});
			}
		});

		if ( options.using ) {
			// adds feedback as second argument to using callback, if present
			using = function( props ) {
				var left = targetOffset.left - position.left,
					right = left + targetWidth - elemWidth,
					top = targetOffset.top - position.top,
					bottom = top + targetHeight - elemHeight,
					feedback = {
						target: {
							element: target,
							left: targetOffset.left,
							top: targetOffset.top,
							width: targetWidth,
							height: targetHeight
						},
						element: {
							element: elem,
							left: position.left,
							top: position.top,
							width: elemWidth,
							height: elemHeight
						},
						horizontal: right < 0 ? "left" : left > 0 ? "right" : "center",
						vertical: bottom < 0 ? "top" : top > 0 ? "bottom" : "middle"
					};
				if ( targetWidth < elemWidth && abs( left + right ) < targetWidth ) {
					feedback.horizontal = "center";
				}
				if ( targetHeight < elemHeight && abs( top + bottom ) < targetHeight ) {
					feedback.vertical = "middle";
				}
				if ( max( abs( left ), abs( right ) ) > max( abs( top ), abs( bottom ) ) ) {
					feedback.important = "horizontal";
				} else {
					feedback.important = "vertical";
				}
				options.using.call( this, props, feedback );
			};
		}

		elem.offset( $.extend( position, { using: using } ) );
	});
};

$.ui.position = {
	fit: {
		left: function( position, data ) {
			var within = data.within,
				withinOffset = within.isWindow ? within.scrollLeft : within.offset.left,
				outerWidth = within.width,
				collisionPosLeft = position.left - data.collisionPosition.marginLeft,
				overLeft = withinOffset - collisionPosLeft,
				overRight = collisionPosLeft + data.collisionWidth - outerWidth - withinOffset,
				newOverRight;

			// element is wider than within
			if ( data.collisionWidth > outerWidth ) {
				// element is initially over the left side of within
				if ( overLeft > 0 && overRight <= 0 ) {
					newOverRight = position.left + overLeft + data.collisionWidth - outerWidth - withinOffset;
					position.left += overLeft - newOverRight;
				// element is initially over right side of within
				} else if ( overRight > 0 && overLeft <= 0 ) {
					position.left = withinOffset;
				// element is initially over both left and right sides of within
				} else {
					if ( overLeft > overRight ) {
						position.left = withinOffset + outerWidth - data.collisionWidth;
					} else {
						position.left = withinOffset;
					}
				}
			// too far left -> align with left edge
			} else if ( overLeft > 0 ) {
				position.left += overLeft;
			// too far right -> align with right edge
			} else if ( overRight > 0 ) {
				position.left -= overRight;
			// adjust based on position and margin
			} else {
				position.left = max( position.left - collisionPosLeft, position.left );
			}
		},
		top: function( position, data ) {
			var within = data.within,
				withinOffset = within.isWindow ? within.scrollTop : within.offset.top,
				outerHeight = data.within.height,
				collisionPosTop = position.top - data.collisionPosition.marginTop,
				overTop = withinOffset - collisionPosTop,
				overBottom = collisionPosTop + data.collisionHeight - outerHeight - withinOffset,
				newOverBottom;

			// element is taller than within
			if ( data.collisionHeight > outerHeight ) {
				// element is initially over the top of within
				if ( overTop > 0 && overBottom <= 0 ) {
					newOverBottom = position.top + overTop + data.collisionHeight - outerHeight - withinOffset;
					position.top += overTop - newOverBottom;
				// element is initially over bottom of within
				} else if ( overBottom > 0 && overTop <= 0 ) {
					position.top = withinOffset;
				// element is initially over both top and bottom of within
				} else {
					if ( overTop > overBottom ) {
						position.top = withinOffset + outerHeight - data.collisionHeight;
					} else {
						position.top = withinOffset;
					}
				}
			// too far up -> align with top
			} else if ( overTop > 0 ) {
				position.top += overTop;
			// too far down -> align with bottom edge
			} else if ( overBottom > 0 ) {
				position.top -= overBottom;
			// adjust based on position and margin
			} else {
				position.top = max( position.top - collisionPosTop, position.top );
			}
		}
	},
	flip: {
		left: function( position, data ) {
			var within = data.within,
				withinOffset = within.offset.left + within.scrollLeft,
				outerWidth = within.width,
				offsetLeft = within.isWindow ? within.scrollLeft : within.offset.left,
				collisionPosLeft = position.left - data.collisionPosition.marginLeft,
				overLeft = collisionPosLeft - offsetLeft,
				overRight = collisionPosLeft + data.collisionWidth - outerWidth - offsetLeft,
				myOffset = data.my[ 0 ] === "left" ?
					-data.elemWidth :
					data.my[ 0 ] === "right" ?
						data.elemWidth :
						0,
				atOffset = data.at[ 0 ] === "left" ?
					data.targetWidth :
					data.at[ 0 ] === "right" ?
						-data.targetWidth :
						0,
				offset = -2 * data.offset[ 0 ],
				newOverRight,
				newOverLeft;

			if ( overLeft < 0 ) {
				newOverRight = position.left + myOffset + atOffset + offset + data.collisionWidth - outerWidth - withinOffset;
				if ( newOverRight < 0 || newOverRight < abs( overLeft ) ) {
					position.left += myOffset + atOffset + offset;
				}
			}
			else if ( overRight > 0 ) {
				newOverLeft = position.left - data.collisionPosition.marginLeft + myOffset + atOffset + offset - offsetLeft;
				if ( newOverLeft > 0 || abs( newOverLeft ) < overRight ) {
					position.left += myOffset + atOffset + offset;
				}
			}
		},
		top: function( position, data ) {
			var within = data.within,
				withinOffset = within.offset.top + within.scrollTop,
				outerHeight = within.height,
				offsetTop = within.isWindow ? within.scrollTop : within.offset.top,
				collisionPosTop = position.top - data.collisionPosition.marginTop,
				overTop = collisionPosTop - offsetTop,
				overBottom = collisionPosTop + data.collisionHeight - outerHeight - offsetTop,
				top = data.my[ 1 ] === "top",
				myOffset = top ?
					-data.elemHeight :
					data.my[ 1 ] === "bottom" ?
						data.elemHeight :
						0,
				atOffset = data.at[ 1 ] === "top" ?
					data.targetHeight :
					data.at[ 1 ] === "bottom" ?
						-data.targetHeight :
						0,
				offset = -2 * data.offset[ 1 ],
				newOverTop,
				newOverBottom;
			if ( overTop < 0 ) {
				newOverBottom = position.top + myOffset + atOffset + offset + data.collisionHeight - outerHeight - withinOffset;
				if ( ( position.top + myOffset + atOffset + offset) > overTop && ( newOverBottom < 0 || newOverBottom < abs( overTop ) ) ) {
					position.top += myOffset + atOffset + offset;
				}
			}
			else if ( overBottom > 0 ) {
				newOverTop = position.top -  data.collisionPosition.marginTop + myOffset + atOffset + offset - offsetTop;
				if ( ( position.top + myOffset + atOffset + offset) > overBottom && ( newOverTop > 0 || abs( newOverTop ) < overBottom ) ) {
					position.top += myOffset + atOffset + offset;
				}
			}
		}
	},
	flipfit: {
		left: function() {
			$.ui.position.flip.left.apply( this, arguments );
			$.ui.position.fit.left.apply( this, arguments );
		},
		top: function() {
			$.ui.position.flip.top.apply( this, arguments );
			$.ui.position.fit.top.apply( this, arguments );
		}
	}
};

// fraction support test
(function () {
	var testElement, testElementParent, testElementStyle, offsetLeft, i,
		body = document.getElementsByTagName( "body" )[ 0 ],
		div = document.createElement( "div" );

	//Create a "fake body" for testing based on method used in jQuery.support
	testElement = document.createElement( body ? "div" : "body" );
	testElementStyle = {
		visibility: "hidden",
		width: 0,
		height: 0,
		border: 0,
		margin: 0,
		background: "none"
	};
	if ( body ) {
		$.extend( testElementStyle, {
			position: "absolute",
			left: "-1000px",
			top: "-1000px"
		});
	}
	for ( i in testElementStyle ) {
		testElement.style[ i ] = testElementStyle[ i ];
	}
	testElement.appendChild( div );
	testElementParent = body || document.documentElement;
	testElementParent.insertBefore( testElement, testElementParent.firstChild );

	div.style.cssText = "position: absolute; left: 10.7432222px;";

	offsetLeft = $( div ).offset().left;
	$.support.offsetFractions = offsetLeft > 10 && offsetLeft < 11;

	testElement.innerHTML = "";
	testElementParent.removeChild( testElement );
})();

}( jQuery ) );
(function( $, undefined ) {

$.widget("ui.draggable", $.ui.mouse, {
	version: "1.10.1",
	widgetEventPrefix: "drag",
	options: {
		addClasses: true,
		appendTo: "parent",
		axis: false,
		connectToSortable: false,
		containment: false,
		cursor: "auto",
		cursorAt: false,
		grid: false,
		handle: false,
		helper: "original",
		iframeFix: false,
		opacity: false,
		refreshPositions: false,
		revert: false,
		revertDuration: 500,
		scope: "default",
		scroll: true,
		scrollSensitivity: 20,
		scrollSpeed: 20,
		snap: false,
		snapMode: "both",
		snapTolerance: 20,
		stack: false,
		zIndex: false,

		// callbacks
		drag: null,
		start: null,
		stop: null
	},
	_create: function() {

		if (this.options.helper === "original" && !(/^(?:r|a|f)/).test(this.element.css("position"))) {
			this.element[0].style.position = "relative";
		}
		if (this.options.addClasses){
			this.element.addClass("ui-draggable");
		}
		if (this.options.disabled){
			this.element.addClass("ui-draggable-disabled");
		}

		this._mouseInit();

	},

	_destroy: function() {
		this.element.removeClass( "ui-draggable ui-draggable-dragging ui-draggable-disabled" );
		this._mouseDestroy();
	},

	_mouseCapture: function(event) {

		var o = this.options;

		// among others, prevent a drag on a resizable-handle
		if (this.helper || o.disabled || $(event.target).closest(".ui-resizable-handle").length > 0) {
			return false;
		}

		//Quit if we're not on a valid handle
		this.handle = this._getHandle(event);
		if (!this.handle) {
			return false;
		}

		$(o.iframeFix === true ? "iframe" : o.iframeFix).each(function() {
			$("<div class='ui-draggable-iframeFix' style='background: #fff;'></div>")
			.css({
				width: this.offsetWidth+"px", height: this.offsetHeight+"px",
				position: "absolute", opacity: "0.001", zIndex: 1000
			})
			.css($(this).offset())
			.appendTo("body");
		});

		return true;

	},

	_mouseStart: function(event) {

		var o = this.options;

		//Create and append the visible helper
		this.helper = this._createHelper(event);

		this.helper.addClass("ui-draggable-dragging");

		//Cache the helper size
		this._cacheHelperProportions();

		//If ddmanager is used for droppables, set the global draggable
		if($.ui.ddmanager) {
			$.ui.ddmanager.current = this;
		}

		/*
		 * - Position generation -
		 * This block generates everything position related - it's the core of draggables.
		 */

		//Cache the margins of the original element
		this._cacheMargins();

		//Store the helper's css position
		this.cssPosition = this.helper.css("position");
		this.scrollParent = this.helper.scrollParent();

		//The element's absolute position on the page minus margins
		this.offset = this.positionAbs = this.element.offset();
		this.offset = {
			top: this.offset.top - this.margins.top,
			left: this.offset.left - this.margins.left
		};

		$.extend(this.offset, {
			click: { //Where the click happened, relative to the element
				left: event.pageX - this.offset.left,
				top: event.pageY - this.offset.top
			},
			parent: this._getParentOffset(),
			relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
		});

		//Generate the original position
		this.originalPosition = this.position = this._generatePosition(event);
		this.originalPageX = event.pageX;
		this.originalPageY = event.pageY;

		//Adjust the mouse offset relative to the helper if "cursorAt" is supplied
		(o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));

		//Set a containment if given in the options
		if(o.containment) {
			this._setContainment();
		}

		//Trigger event + callbacks
		if(this._trigger("start", event) === false) {
			this._clear();
			return false;
		}

		//Recache the helper size
		this._cacheHelperProportions();

		//Prepare the droppable offsets
		if ($.ui.ddmanager && !o.dropBehaviour) {
			$.ui.ddmanager.prepareOffsets(this, event);
		}


		this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position

		//If the ddmanager is used for droppables, inform the manager that dragging has started (see #5003)
		if ( $.ui.ddmanager ) {
			$.ui.ddmanager.dragStart(this, event);
		}

		return true;
	},

	_mouseDrag: function(event, noPropagation) {

		//Compute the helpers position
		this.position = this._generatePosition(event);
		this.positionAbs = this._convertPositionTo("absolute");

		//Call plugins and callbacks and use the resulting position if something is returned
		if (!noPropagation) {
			var ui = this._uiHash();
			if(this._trigger("drag", event, ui) === false) {
				this._mouseUp({});
				return false;
			}
			this.position = ui.position;
		}

		if(!this.options.axis || this.options.axis !== "y") {
			this.helper[0].style.left = this.position.left+"px";
		}
		if(!this.options.axis || this.options.axis !== "x") {
			this.helper[0].style.top = this.position.top+"px";
		}
		if($.ui.ddmanager) {
			$.ui.ddmanager.drag(this, event);
		}

		return false;
	},

	_mouseStop: function(event) {

		//If we are using droppables, inform the manager about the drop
		var element,
			that = this,
			elementInDom = false,
			dropped = false;
		if ($.ui.ddmanager && !this.options.dropBehaviour) {
			dropped = $.ui.ddmanager.drop(this, event);
		}

		//if a drop comes from outside (a sortable)
		if(this.dropped) {
			dropped = this.dropped;
			this.dropped = false;
		}

		//if the original element is no longer in the DOM don't bother to continue (see #8269)
		element = this.element[0];
		while ( element && (element = element.parentNode) ) {
			if (element === document ) {
				elementInDom = true;
			}
		}
		if ( !elementInDom && this.options.helper === "original" ) {
			return false;
		}

		if((this.options.revert === "invalid" && !dropped) || (this.options.revert === "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {
			$(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {
				if(that._trigger("stop", event) !== false) {
					that._clear();
				}
			});
		} else {
			if(this._trigger("stop", event) !== false) {
				this._clear();
			}
		}

		return false;
	},

	_mouseUp: function(event) {
		//Remove frame helpers
		$("div.ui-draggable-iframeFix").each(function() {
			this.parentNode.removeChild(this);
		});

		//If the ddmanager is used for droppables, inform the manager that dragging has stopped (see #5003)
		if( $.ui.ddmanager ) {
			$.ui.ddmanager.dragStop(this, event);
		}

		return $.ui.mouse.prototype._mouseUp.call(this, event);
	},

	cancel: function() {

		if(this.helper.is(".ui-draggable-dragging")) {
			this._mouseUp({});
		} else {
			this._clear();
		}

		return this;

	},

	_getHandle: function(event) {

		var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false;
		$(this.options.handle, this.element)
			.find("*")
			.addBack()
			.each(function() {
				if(this === event.target) {
					handle = true;
				}
			});

		return handle;

	},

	_createHelper: function(event) {

		var o = this.options,
			helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper === "clone" ? this.element.clone().removeAttr("id") : this.element);

		if(!helper.parents("body").length) {
			helper.appendTo((o.appendTo === "parent" ? this.element[0].parentNode : o.appendTo));
		}

		if(helper[0] !== this.element[0] && !(/(fixed|absolute)/).test(helper.css("position"))) {
			helper.css("position", "absolute");
		}

		return helper;

	},

	_adjustOffsetFromHelper: function(obj) {
		if (typeof obj === "string") {
			obj = obj.split(" ");
		}
		if ($.isArray(obj)) {
			obj = {left: +obj[0], top: +obj[1] || 0};
		}
		if ("left" in obj) {
			this.offset.click.left = obj.left + this.margins.left;
		}
		if ("right" in obj) {
			this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
		}
		if ("top" in obj) {
			this.offset.click.top = obj.top + this.margins.top;
		}
		if ("bottom" in obj) {
			this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
		}
	},

	_getParentOffset: function() {

		//Get the offsetParent and cache its position
		this.offsetParent = this.helper.offsetParent();
		var po = this.offsetParent.offset();

		// This is a special case where we need to modify a offset calculated on start, since the following happened:
		// 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
		// 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
		//    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
		if(this.cssPosition === "absolute" && this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
			po.left += this.scrollParent.scrollLeft();
			po.top += this.scrollParent.scrollTop();
		}

		//This needs to be actually done for all browsers, since pageX/pageY includes this information
		//Ugly IE fix
		if((this.offsetParent[0] === document.body) ||
			(this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() === "html" && $.ui.ie)) {
			po = { top: 0, left: 0 };
		}

		return {
			top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
			left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
		};

	},

	_getRelativeOffset: function() {

		if(this.cssPosition === "relative") {
			var p = this.element.position();
			return {
				top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
				left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
			};
		} else {
			return { top: 0, left: 0 };
		}

	},

	_cacheMargins: function() {
		this.margins = {
			left: (parseInt(this.element.css("marginLeft"),10) || 0),
			top: (parseInt(this.element.css("marginTop"),10) || 0),
			right: (parseInt(this.element.css("marginRight"),10) || 0),
			bottom: (parseInt(this.element.css("marginBottom"),10) || 0)
		};
	},

	_cacheHelperProportions: function() {
		this.helperProportions = {
			width: this.helper.outerWidth(),
			height: this.helper.outerHeight()
		};
	},

	_setContainment: function() {

		var over, c, ce,
			o = this.options;

		if(o.containment === "parent") {
			o.containment = this.helper[0].parentNode;
		}
		if(o.containment === "document" || o.containment === "window") {
			this.containment = [
				o.containment === "document" ? 0 : $(window).scrollLeft() - this.offset.relative.left - this.offset.parent.left,
				o.containment === "document" ? 0 : $(window).scrollTop() - this.offset.relative.top - this.offset.parent.top,
				(o.containment === "document" ? 0 : $(window).scrollLeft()) + $(o.containment === "document" ? document : window).width() - this.helperProportions.width - this.margins.left,
				(o.containment === "document" ? 0 : $(window).scrollTop()) + ($(o.containment === "document" ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
			];
		}

		if(!(/^(document|window|parent)$/).test(o.containment) && o.containment.constructor !== Array) {
			c = $(o.containment);
			ce = c[0];

			if(!ce) {
				return;
			}

			over = ($(ce).css("overflow") !== "hidden");

			this.containment = [
				(parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0),
				(parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0),
				(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - (parseInt($(ce).css("paddingRight"),10) || 0) - this.helperProportions.width - this.margins.left - this.margins.right,
				(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - (parseInt($(ce).css("paddingBottom"),10) || 0) - this.helperProportions.height - this.margins.top  - this.margins.bottom
			];
			this.relative_container = c;

		} else if(o.containment.constructor === Array) {
			this.containment = o.containment;
		}

	},

	_convertPositionTo: function(d, pos) {

		if(!pos) {
			pos = this.position;
		}

		var mod = d === "absolute" ? 1 : -1,
			scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);

		return {
			top: (
				pos.top	+																// The absolute mouse position
				this.offset.relative.top * mod +										// Only for relative positioned nodes: Relative offset from element to offset parent
				this.offset.parent.top * mod -										// The offsetParent's offset without borders (offset + border)
				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
			),
			left: (
				pos.left +																// The absolute mouse position
				this.offset.relative.left * mod +										// Only for relative positioned nodes: Relative offset from element to offset parent
				this.offset.parent.left * mod	-										// The offsetParent's offset without borders (offset + border)
				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
			)
		};

	},

	_generatePosition: function(event) {

		var containment, co, top, left,
			o = this.options,
			scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent,
			scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName),
			pageX = event.pageX,
			pageY = event.pageY;

		/*
		 * - Position constraining -
		 * Constrain the position to a mix of grid, containment.
		 */

		if(this.originalPosition) { //If we are not dragging yet, we won't check for options
			if(this.containment) {
			if (this.relative_container){
				co = this.relative_container.offset();
				containment = [ this.containment[0] + co.left,
					this.containment[1] + co.top,
					this.containment[2] + co.left,
					this.containment[3] + co.top ];
			}
			else {
				containment = this.containment;
			}

				if(event.pageX - this.offset.click.left < containment[0]) {
					pageX = containment[0] + this.offset.click.left;
				}
				if(event.pageY - this.offset.click.top < containment[1]) {
					pageY = containment[1] + this.offset.click.top;
				}
				if(event.pageX - this.offset.click.left > containment[2]) {
					pageX = containment[2] + this.offset.click.left;
				}
				if(event.pageY - this.offset.click.top > containment[3]) {
					pageY = containment[3] + this.offset.click.top;
				}
			}

			if(o.grid) {
				//Check for grid elements set to 0 to prevent divide by 0 error causing invalid argument errors in IE (see ticket #6950)
				top = o.grid[1] ? this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1] : this.originalPageY;
				pageY = containment ? ((top - this.offset.click.top >= containment[1] || top - this.offset.click.top > containment[3]) ? top : ((top - this.offset.click.top >= containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;

				left = o.grid[0] ? this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0] : this.originalPageX;
				pageX = containment ? ((left - this.offset.click.left >= containment[0] || left - this.offset.click.left > containment[2]) ? left : ((left - this.offset.click.left >= containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
			}

		}

		return {
			top: (
				pageY -																	// The absolute mouse position
				this.offset.click.top	-												// Click offset (relative to the element)
				this.offset.relative.top -												// Only for relative positioned nodes: Relative offset from element to offset parent
				this.offset.parent.top +												// The offsetParent's offset without borders (offset + border)
				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
			),
			left: (
				pageX -																	// The absolute mouse position
				this.offset.click.left -												// Click offset (relative to the element)
				this.offset.relative.left -												// Only for relative positioned nodes: Relative offset from element to offset parent
				this.offset.parent.left +												// The offsetParent's offset without borders (offset + border)
				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
			)
		};

	},

	_clear: function() {
		this.helper.removeClass("ui-draggable-dragging");
		if(this.helper[0] !== this.element[0] && !this.cancelHelperRemoval) {
			this.helper.remove();
		}
		this.helper = null;
		this.cancelHelperRemoval = false;
	},

	// From now on bulk stuff - mainly helpers

	_trigger: function(type, event, ui) {
		ui = ui || this._uiHash();
		$.ui.plugin.call(this, type, [event, ui]);
		//The absolute position has to be recalculated after plugins
		if(type === "drag") {
			this.positionAbs = this._convertPositionTo("absolute");
		}
		return $.Widget.prototype._trigger.call(this, type, event, ui);
	},

	plugins: {},

	_uiHash: function() {
		return {
			helper: this.helper,
			position: this.position,
			originalPosition: this.originalPosition,
			offset: this.positionAbs
		};
	}

});

$.ui.plugin.add("draggable", "connectToSortable", {
	start: function(event, ui) {

		var inst = $(this).data("ui-draggable"), o = inst.options,
			uiSortable = $.extend({}, ui, { item: inst.element });
		inst.sortables = [];
		$(o.connectToSortable).each(function() {
			var sortable = $.data(this, "ui-sortable");
			if (sortable && !sortable.options.disabled) {
				inst.sortables.push({
					instance: sortable,
					shouldRevert: sortable.options.revert
				});
				sortable.refreshPositions();	// Call the sortable's refreshPositions at drag start to refresh the containerCache since the sortable container cache is used in drag and needs to be up to date (this will ensure it's initialised as well as being kept in step with any changes that might have happened on the page).
				sortable._trigger("activate", event, uiSortable);
			}
		});

	},
	stop: function(event, ui) {

		//If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
		var inst = $(this).data("ui-draggable"),
			uiSortable = $.extend({}, ui, { item: inst.element });

		$.each(inst.sortables, function() {
			if(this.instance.isOver) {

				this.instance.isOver = 0;

				inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance
				this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work)

				//The sortable revert is supported, and we have to set a temporary dropped variable on the draggable to support revert: "valid/invalid"
				if(this.shouldRevert) {
					this.instance.options.revert = true;
				}

				//Trigger the stop of the sortable
				this.instance._mouseStop(event);

				this.instance.options.helper = this.instance.options._helper;

				//If the helper has been the original item, restore properties in the sortable
				if(inst.options.helper === "original") {
					this.instance.currentItem.css({ top: "auto", left: "auto" });
				}

			} else {
				this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance
				this.instance._trigger("deactivate", event, uiSortable);
			}

		});

	},
	drag: function(event, ui) {

		var inst = $(this).data("ui-draggable"), that = this;

		$.each(inst.sortables, function() {

			var innermostIntersecting = false,
				thisSortable = this;

			//Copy over some variables to allow calling the sortable's native _intersectsWith
			this.instance.positionAbs = inst.positionAbs;
			this.instance.helperProportions = inst.helperProportions;
			this.instance.offset.click = inst.offset.click;

			if(this.instance._intersectsWith(this.instance.containerCache)) {
				innermostIntersecting = true;
				$.each(inst.sortables, function () {
					this.instance.positionAbs = inst.positionAbs;
					this.instance.helperProportions = inst.helperProportions;
					this.instance.offset.click = inst.offset.click;
					if (this !== thisSortable &&
						this.instance._intersectsWith(this.instance.containerCache) &&
						$.contains(thisSortable.instance.element[0], this.instance.element[0])
					) {
						innermostIntersecting = false;
					}
					return innermostIntersecting;
				});
			}


			if(innermostIntersecting) {
				//If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once
				if(!this.instance.isOver) {

					this.instance.isOver = 1;
					//Now we fake the start of dragging for the sortable instance,
					//by cloning the list group item, appending it to the sortable and using it as inst.currentItem
					//We can then fire the start event of the sortable with our passed browser event, and our own helper (so it doesn't create a new one)
					this.instance.currentItem = $(that).clone().removeAttr("id").appendTo(this.instance.element).data("ui-sortable-item", true);
					this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it
					this.instance.options.helper = function() { return ui.helper[0]; };

					event.target = this.instance.currentItem[0];
					this.instance._mouseCapture(event, true);
					this.instance._mouseStart(event, true, true);

					//Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes
					this.instance.offset.click.top = inst.offset.click.top;
					this.instance.offset.click.left = inst.offset.click.left;
					this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left;
					this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top;

					inst._trigger("toSortable", event);
					inst.dropped = this.instance.element; //draggable revert needs that
					//hack so receive/update callbacks work (mostly)
					inst.currentItem = inst.element;
					this.instance.fromOutside = inst;

				}

				//Provided we did all the previous steps, we can fire the drag event of the sortable on every draggable drag, when it intersects with the sortable
				if(this.instance.currentItem) {
					this.instance._mouseDrag(event);
				}

			} else {

				//If it doesn't intersect with the sortable, and it intersected before,
				//we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval
				if(this.instance.isOver) {

					this.instance.isOver = 0;
					this.instance.cancelHelperRemoval = true;

					//Prevent reverting on this forced stop
					this.instance.options.revert = false;

					// The out event needs to be triggered independently
					this.instance._trigger("out", event, this.instance._uiHash(this.instance));

					this.instance._mouseStop(event, true);
					this.instance.options.helper = this.instance.options._helper;

					//Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size
					this.instance.currentItem.remove();
					if(this.instance.placeholder) {
						this.instance.placeholder.remove();
					}

					inst._trigger("fromSortable", event);
					inst.dropped = false; //draggable revert needs that
				}

			}

		});

	}
});

$.ui.plugin.add("draggable", "cursor", {
	start: function() {
		var t = $("body"), o = $(this).data("ui-draggable").options;
		if (t.css("cursor")) {
			o._cursor = t.css("cursor");
		}
		t.css("cursor", o.cursor);
	},
	stop: function() {
		var o = $(this).data("ui-draggable").options;
		if (o._cursor) {
			$("body").css("cursor", o._cursor);
		}
	}
});

$.ui.plugin.add("draggable", "opacity", {
	start: function(event, ui) {
		var t = $(ui.helper), o = $(this).data("ui-draggable").options;
		if(t.css("opacity")) {
			o._opacity = t.css("opacity");
		}
		t.css("opacity", o.opacity);
	},
	stop: function(event, ui) {
		var o = $(this).data("ui-draggable").options;
		if(o._opacity) {
			$(ui.helper).css("opacity", o._opacity);
		}
	}
});

$.ui.plugin.add("draggable", "scroll", {
	start: function() {
		var i = $(this).data("ui-draggable");
		if(i.scrollParent[0] !== document && i.scrollParent[0].tagName !== "HTML") {
			i.overflowOffset = i.scrollParent.offset();
		}
	},
	drag: function( event ) {

		var i = $(this).data("ui-draggable"), o = i.options, scrolled = false;

		if(i.scrollParent[0] !== document && i.scrollParent[0].tagName !== "HTML") {

			if(!o.axis || o.axis !== "x") {
				if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) {
					i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed;
				} else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity) {
					i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed;
				}
			}

			if(!o.axis || o.axis !== "y") {
				if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) {
					i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed;
				} else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity) {
					i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed;
				}
			}

		} else {

			if(!o.axis || o.axis !== "x") {
				if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
					scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
				} else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) {
					scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
				}
			}

			if(!o.axis || o.axis !== "y") {
				if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
					scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
				} else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) {
					scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
				}
			}

		}

		if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
			$.ui.ddmanager.prepareOffsets(i, event);
		}

	}
});

$.ui.plugin.add("draggable", "snap", {
	start: function() {

		var i = $(this).data("ui-draggable"),
			o = i.options;

		i.snapElements = [];

		$(o.snap.constructor !== String ? ( o.snap.items || ":data(ui-draggable)" ) : o.snap).each(function() {
			var $t = $(this),
				$o = $t.offset();
			if(this !== i.element[0]) {
				i.snapElements.push({
					item: this,
					width: $t.outerWidth(), height: $t.outerHeight(),
					top: $o.top, left: $o.left
				});
			}
		});

	},
	drag: function(event, ui) {

		var ts, bs, ls, rs, l, r, t, b, i, first,
			inst = $(this).data("ui-draggable"),
			o = inst.options,
			d = o.snapTolerance,
			x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
			y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;

		for (i = inst.snapElements.length - 1; i >= 0; i--){

			l = inst.snapElements[i].left;
			r = l + inst.snapElements[i].width;
			t = inst.snapElements[i].top;
			b = t + inst.snapElements[i].height;

			//Yes, I know, this is insane ;)
			if(!((l-d < x1 && x1 < r+d && t-d < y1 && y1 < b+d) || (l-d < x1 && x1 < r+d && t-d < y2 && y2 < b+d) || (l-d < x2 && x2 < r+d && t-d < y1 && y1 < b+d) || (l-d < x2 && x2 < r+d && t-d < y2 && y2 < b+d))) {
				if(inst.snapElements[i].snapping) {
					(inst.options.snap.release && inst.options.snap.release.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
				}
				inst.snapElements[i].snapping = false;
				continue;
			}

			if(o.snapMode !== "inner") {
				ts = Math.abs(t - y2) <= d;
				bs = Math.abs(b - y1) <= d;
				ls = Math.abs(l - x2) <= d;
				rs = Math.abs(r - x1) <= d;
				if(ts) {
					ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
				}
				if(bs) {
					ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top - inst.margins.top;
				}
				if(ls) {
					ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left - inst.margins.left;
				}
				if(rs) {
					ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left - inst.margins.left;
				}
			}

			first = (ts || bs || ls || rs);

			if(o.snapMode !== "outer") {
				ts = Math.abs(t - y1) <= d;
				bs = Math.abs(b - y2) <= d;
				ls = Math.abs(l - x1) <= d;
				rs = Math.abs(r - x2) <= d;
				if(ts) {
					ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top - inst.margins.top;
				}
				if(bs) {
					ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
				}
				if(ls) {
					ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left - inst.margins.left;
				}
				if(rs) {
					ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left - inst.margins.left;
				}
			}

			if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first)) {
				(inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
			}
			inst.snapElements[i].snapping = (ts || bs || ls || rs || first);

		}

	}
});

$.ui.plugin.add("draggable", "stack", {
	start: function() {
		var min,
			o = this.data("ui-draggable").options,
			group = $.makeArray($(o.stack)).sort(function(a,b) {
				return (parseInt($(a).css("zIndex"),10) || 0) - (parseInt($(b).css("zIndex"),10) || 0);
			});

		if (!group.length) { return; }

		min = parseInt($(group[0]).css("zIndex"), 10) || 0;
		$(group).each(function(i) {
			$(this).css("zIndex", min + i);
		});
		this.css("zIndex", (min + group.length));
	}
});

$.ui.plugin.add("draggable", "zIndex", {
	start: function(event, ui) {
		var t = $(ui.helper), o = $(this).data("ui-draggable").options;
		if(t.css("zIndex")) {
			o._zIndex = t.css("zIndex");
		}
		t.css("zIndex", o.zIndex);
	},
	stop: function(event, ui) {
		var o = $(this).data("ui-draggable").options;
		if(o._zIndex) {
			$(ui.helper).css("zIndex", o._zIndex);
		}
	}
});

})(jQuery);
(function( $, undefined ) {

function isOverAxis( x, reference, size ) {
	return ( x > reference ) && ( x < ( reference + size ) );
}

$.widget("ui.droppable", {
	version: "1.10.1",
	widgetEventPrefix: "drop",
	options: {
		accept: "*",
		activeClass: false,
		addClasses: true,
		greedy: false,
		hoverClass: false,
		scope: "default",
		tolerance: "intersect",

		// callbacks
		activate: null,
		deactivate: null,
		drop: null,
		out: null,
		over: null
	},
	_create: function() {

		var o = this.options,
			accept = o.accept;

		this.isover = false;
		this.isout = true;

		this.accept = $.isFunction(accept) ? accept : function(d) {
			return d.is(accept);
		};

		//Store the droppable's proportions
		this.proportions = { width: this.element[0].offsetWidth, height: this.element[0].offsetHeight };

		// Add the reference and positions to the manager
		$.ui.ddmanager.droppables[o.scope] = $.ui.ddmanager.droppables[o.scope] || [];
		$.ui.ddmanager.droppables[o.scope].push(this);

		(o.addClasses && this.element.addClass("ui-droppable"));

	},

	_destroy: function() {
		var i = 0,
			drop = $.ui.ddmanager.droppables[this.options.scope];

		for ( ; i < drop.length; i++ ) {
			if ( drop[i] === this ) {
				drop.splice(i, 1);
			}
		}

		this.element.removeClass("ui-droppable ui-droppable-disabled");
	},

	_setOption: function(key, value) {

		if(key === "accept") {
			this.accept = $.isFunction(value) ? value : function(d) {
				return d.is(value);
			};
		}
		$.Widget.prototype._setOption.apply(this, arguments);
	},

	_activate: function(event) {
		var draggable = $.ui.ddmanager.current;
		if(this.options.activeClass) {
			this.element.addClass(this.options.activeClass);
		}
		if(draggable){
			this._trigger("activate", event, this.ui(draggable));
		}
	},

	_deactivate: function(event) {
		var draggable = $.ui.ddmanager.current;
		if(this.options.activeClass) {
			this.element.removeClass(this.options.activeClass);
		}
		if(draggable){
			this._trigger("deactivate", event, this.ui(draggable));
		}
	},

	_over: function(event) {

		var draggable = $.ui.ddmanager.current;

		// Bail if draggable and droppable are same element
		if (!draggable || (draggable.currentItem || draggable.element)[0] === this.element[0]) {
			return;
		}

		if (this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
			if(this.options.hoverClass) {
				this.element.addClass(this.options.hoverClass);
			}
			this._trigger("over", event, this.ui(draggable));
		}

	},

	_out: function(event) {

		var draggable = $.ui.ddmanager.current;

		// Bail if draggable and droppable are same element
		if (!draggable || (draggable.currentItem || draggable.element)[0] === this.element[0]) {
			return;
		}

		if (this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
			if(this.options.hoverClass) {
				this.element.removeClass(this.options.hoverClass);
			}
			this._trigger("out", event, this.ui(draggable));
		}

	},

	_drop: function(event,custom) {

		var draggable = custom || $.ui.ddmanager.current,
			childrenIntersection = false;

		// Bail if draggable and droppable are same element
		if (!draggable || (draggable.currentItem || draggable.element)[0] === this.element[0]) {
			return false;
		}

		this.element.find(":data(ui-droppable)").not(".ui-draggable-dragging").each(function() {
			var inst = $.data(this, "ui-droppable");
			if(
				inst.options.greedy &&
				!inst.options.disabled &&
				inst.options.scope === draggable.options.scope &&
				inst.accept.call(inst.element[0], (draggable.currentItem || draggable.element)) &&
				$.ui.intersect(draggable, $.extend(inst, { offset: inst.element.offset() }), inst.options.tolerance)
			) { childrenIntersection = true; return false; }
		});
		if(childrenIntersection) {
			return false;
		}

		if(this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
			if(this.options.activeClass) {
				this.element.removeClass(this.options.activeClass);
			}
			if(this.options.hoverClass) {
				this.element.removeClass(this.options.hoverClass);
			}
			this._trigger("drop", event, this.ui(draggable));
			return this.element;
		}

		return false;

	},

	ui: function(c) {
		return {
			draggable: (c.currentItem || c.element),
			helper: c.helper,
			position: c.position,
			offset: c.positionAbs
		};
	}

});

$.ui.intersect = function(draggable, droppable, toleranceMode) {

	if (!droppable.offset) {
		return false;
	}

	var draggableLeft, draggableTop,
		x1 = (draggable.positionAbs || draggable.position.absolute).left, x2 = x1 + draggable.helperProportions.width,
		y1 = (draggable.positionAbs || draggable.position.absolute).top, y2 = y1 + draggable.helperProportions.height,
		l = droppable.offset.left, r = l + droppable.proportions.width,
		t = droppable.offset.top, b = t + droppable.proportions.height;

	switch (toleranceMode) {
		case "fit":
			return (l <= x1 && x2 <= r && t <= y1 && y2 <= b);
		case "intersect":
			return (l < x1 + (draggable.helperProportions.width / 2) && // Right Half
				x2 - (draggable.helperProportions.width / 2) < r && // Left Half
				t < y1 + (draggable.helperProportions.height / 2) && // Bottom Half
				y2 - (draggable.helperProportions.height / 2) < b ); // Top Half
		case "pointer":
			draggableLeft = ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left);
			draggableTop = ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top);
			return isOverAxis( draggableTop, t, droppable.proportions.height ) && isOverAxis( draggableLeft, l, droppable.proportions.width );
		case "touch":
			return (
				(y1 >= t && y1 <= b) ||	// Top edge touching
				(y2 >= t && y2 <= b) ||	// Bottom edge touching
				(y1 < t && y2 > b)		// Surrounded vertically
			) && (
				(x1 >= l && x1 <= r) ||	// Left edge touching
				(x2 >= l && x2 <= r) ||	// Right edge touching
				(x1 < l && x2 > r)		// Surrounded horizontally
			);
		default:
			return false;
		}

};

/*
	This manager tracks offsets of draggables and droppables
*/
$.ui.ddmanager = {
	current: null,
	droppables: { "default": [] },
	prepareOffsets: function(t, event) {

		var i, j,
			m = $.ui.ddmanager.droppables[t.options.scope] || [],
			type = event ? event.type : null, // workaround for #2317
			list = (t.currentItem || t.element).find(":data(ui-droppable)").addBack();

		droppablesLoop: for (i = 0; i < m.length; i++) {

			//No disabled and non-accepted
			if(m[i].options.disabled || (t && !m[i].accept.call(m[i].element[0],(t.currentItem || t.element)))) {
				continue;
			}

			// Filter out elements in the current dragged item
			for (j=0; j < list.length; j++) {
				if(list[j] === m[i].element[0]) {
					m[i].proportions.height = 0;
					continue droppablesLoop;
				}
			}

			m[i].visible = m[i].element.css("display") !== "none";
			if(!m[i].visible) {
				continue;
			}

			//Activate the droppable if used directly from draggables
			if(type === "mousedown") {
				m[i]._activate.call(m[i], event);
			}

			m[i].offset = m[i].element.offset();
			m[i].proportions = { width: m[i].element[0].offsetWidth, height: m[i].element[0].offsetHeight };

		}

	},
	drop: function(draggable, event) {

		var dropped = false;
		$.each($.ui.ddmanager.droppables[draggable.options.scope] || [], function() {

			if(!this.options) {
				return;
			}
			if (!this.options.disabled && this.visible && $.ui.intersect(draggable, this, this.options.tolerance)) {
				dropped = this._drop.call(this, event) || dropped;
			}

			if (!this.options.disabled && this.visible && this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
				this.isout = true;
				this.isover = false;
				this._deactivate.call(this, event);
			}

		});
		return dropped;

	},
	dragStart: function( draggable, event ) {
		//Listen for scrolling so that if the dragging causes scrolling the position of the droppables can be recalculated (see #5003)
		draggable.element.parentsUntil( "body" ).bind( "scroll.droppable", function() {
			if( !draggable.options.refreshPositions ) {
				$.ui.ddmanager.prepareOffsets( draggable, event );
			}
		});
	},
	drag: function(draggable, event) {

		//If you have a highly dynamic page, you might try this option. It renders positions every time you move the mouse.
		if(draggable.options.refreshPositions) {
			$.ui.ddmanager.prepareOffsets(draggable, event);
		}

		//Run through all droppables and check their positions based on specific tolerance options
		$.each($.ui.ddmanager.droppables[draggable.options.scope] || [], function() {

			if(this.options.disabled || this.greedyChild || !this.visible) {
				return;
			}

			var parentInstance, scope, parent,
				intersects = $.ui.intersect(draggable, this, this.options.tolerance),
				c = !intersects && this.isover ? "isout" : (intersects && !this.isover ? "isover" : null);
			if(!c) {
				return;
			}

			if (this.options.greedy) {
				// find droppable parents with same scope
				scope = this.options.scope;
				parent = this.element.parents(":data(ui-droppable)").filter(function () {
					return $.data(this, "ui-droppable").options.scope === scope;
				});

				if (parent.length) {
					parentInstance = $.data(parent[0], "ui-droppable");
					parentInstance.greedyChild = (c === "isover");
				}
			}

			// we just moved into a greedy child
			if (parentInstance && c === "isover") {
				parentInstance.isover = false;
				parentInstance.isout = true;
				parentInstance._out.call(parentInstance, event);
			}

			this[c] = true;
			this[c === "isout" ? "isover" : "isout"] = false;
			this[c === "isover" ? "_over" : "_out"].call(this, event);

			// we just moved out of a greedy child
			if (parentInstance && c === "isout") {
				parentInstance.isout = false;
				parentInstance.isover = true;
				parentInstance._over.call(parentInstance, event);
			}
		});

	},
	dragStop: function( draggable, event ) {
		draggable.element.parentsUntil( "body" ).unbind( "scroll.droppable" );
		//Call prepareOffsets one final time since IE does not fire return scroll events when overflow was caused by drag (see #5003)
		if( !draggable.options.refreshPositions ) {
			$.ui.ddmanager.prepareOffsets( draggable, event );
		}
	}
};

})(jQuery);
(function( $, undefined ) {

function num(v) {
	return parseInt(v, 10) || 0;
}

function isNumber(value) {
	return !isNaN(parseInt(value, 10));
}

$.widget("ui.resizable", $.ui.mouse, {
	version: "1.10.1",
	widgetEventPrefix: "resize",
	options: {
		alsoResize: false,
		animate: false,
		animateDuration: "slow",
		animateEasing: "swing",
		aspectRatio: false,
		autoHide: false,
		containment: false,
		ghost: false,
		grid: false,
		handles: "e,s,se",
		helper: false,
		maxHeight: null,
		maxWidth: null,
		minHeight: 10,
		minWidth: 10,
		// See #7960
		zIndex: 90,

		// callbacks
		resize: null,
		start: null,
		stop: null
	},
	_create: function() {

		var n, i, handle, axis, hname,
			that = this,
			o = this.options;
		this.element.addClass("ui-resizable");

		$.extend(this, {
			_aspectRatio: !!(o.aspectRatio),
			aspectRatio: o.aspectRatio,
			originalElement: this.element,
			_proportionallyResizeElements: [],
			_helper: o.helper || o.ghost || o.animate ? o.helper || "ui-resizable-helper" : null
		});

		//Wrap the element if it cannot hold child nodes
		if(this.element[0].nodeName.match(/canvas|textarea|input|select|button|img/i)) {

			//Create a wrapper element and set the wrapper to the new current internal element
			this.element.wrap(
				$("<div class='ui-wrapper' style='overflow: hidden;'></div>").css({
					position: this.element.css("position"),
					width: this.element.outerWidth(),
					height: this.element.outerHeight(),
					top: this.element.css("top"),
					left: this.element.css("left")
				})
			);

			//Overwrite the original this.element
			this.element = this.element.parent().data(
				"ui-resizable", this.element.data("ui-resizable")
			);

			this.elementIsWrapper = true;

			//Move margins to the wrapper
			this.element.css({ marginLeft: this.originalElement.css("marginLeft"), marginTop: this.originalElement.css("marginTop"), marginRight: this.originalElement.css("marginRight"), marginBottom: this.originalElement.css("marginBottom") });
			this.originalElement.css({ marginLeft: 0, marginTop: 0, marginRight: 0, marginBottom: 0});

			//Prevent Safari textarea resize
			this.originalResizeStyle = this.originalElement.css("resize");
			this.originalElement.css("resize", "none");

			//Push the actual element to our proportionallyResize internal array
			this._proportionallyResizeElements.push(this.originalElement.css({ position: "static", zoom: 1, display: "block" }));

			// avoid IE jump (hard set the margin)
			this.originalElement.css({ margin: this.originalElement.css("margin") });

			// fix handlers offset
			this._proportionallyResize();

		}

		this.handles = o.handles || (!$(".ui-resizable-handle", this.element).length ? "e,s,se" : { n: ".ui-resizable-n", e: ".ui-resizable-e", s: ".ui-resizable-s", w: ".ui-resizable-w", se: ".ui-resizable-se", sw: ".ui-resizable-sw", ne: ".ui-resizable-ne", nw: ".ui-resizable-nw" });
		if(this.handles.constructor === String) {

			if ( this.handles === "all") {
				this.handles = "n,e,s,w,se,sw,ne,nw";
			}

			n = this.handles.split(",");
			this.handles = {};

			for(i = 0; i < n.length; i++) {

				handle = $.trim(n[i]);
				hname = "ui-resizable-"+handle;
				axis = $("<div class='ui-resizable-handle " + hname + "'></div>");

				// Apply zIndex to all handles - see #7960
				axis.css({ zIndex: o.zIndex });

				//TODO : What's going on here?
				if ("se" === handle) {
					axis.addClass("ui-icon ui-icon-gripsmall-diagonal-se");
				}

				//Insert into internal handles object and append to element
				this.handles[handle] = ".ui-resizable-"+handle;
				this.element.append(axis);
			}

		}

		this._renderAxis = function(target) {

			var i, axis, padPos, padWrapper;

			target = target || this.element;

			for(i in this.handles) {

				if(this.handles[i].constructor === String) {
					this.handles[i] = $(this.handles[i], this.element).show();
				}

				//Apply pad to wrapper element, needed to fix axis position (textarea, inputs, scrolls)
				if (this.elementIsWrapper && this.originalElement[0].nodeName.match(/textarea|input|select|button/i)) {

					axis = $(this.handles[i], this.element);

					//Checking the correct pad and border
					padWrapper = /sw|ne|nw|se|n|s/.test(i) ? axis.outerHeight() : axis.outerWidth();

					//The padding type i have to apply...
					padPos = [ "padding",
						/ne|nw|n/.test(i) ? "Top" :
						/se|sw|s/.test(i) ? "Bottom" :
						/^e$/.test(i) ? "Right" : "Left" ].join("");

					target.css(padPos, padWrapper);

					this._proportionallyResize();

				}

				//TODO: What's that good for? There's not anything to be executed left
				if(!$(this.handles[i]).length) {
					continue;
				}
			}
		};

		//TODO: make renderAxis a prototype function
		this._renderAxis(this.element);

		this._handles = $(".ui-resizable-handle", this.element)
			.disableSelection();

		//Matching axis name
		this._handles.mouseover(function() {
			if (!that.resizing) {
				if (this.className) {
					axis = this.className.match(/ui-resizable-(se|sw|ne|nw|n|e|s|w)/i);
				}
				//Axis, default = se
				that.axis = axis && axis[1] ? axis[1] : "se";
			}
		});

		//If we want to auto hide the elements
		if (o.autoHide) {
			this._handles.hide();
			$(this.element)
				.addClass("ui-resizable-autohide")
				.mouseenter(function() {
					if (o.disabled) {
						return;
					}
					$(this).removeClass("ui-resizable-autohide");
					that._handles.show();
				})
				.mouseleave(function(){
					if (o.disabled) {
						return;
					}
					if (!that.resizing) {
						$(this).addClass("ui-resizable-autohide");
						that._handles.hide();
					}
				});
		}

		//Initialize the mouse interaction
		this._mouseInit();

	},

	_destroy: function() {

		this._mouseDestroy();

		var wrapper,
			_destroy = function(exp) {
				$(exp).removeClass("ui-resizable ui-resizable-disabled ui-resizable-resizing")
					.removeData("resizable").removeData("ui-resizable").unbind(".resizable").find(".ui-resizable-handle").remove();
			};

		//TODO: Unwrap at same DOM position
		if (this.elementIsWrapper) {
			_destroy(this.element);
			wrapper = this.element;
			this.originalElement.css({
				position: wrapper.css("position"),
				width: wrapper.outerWidth(),
				height: wrapper.outerHeight(),
				top: wrapper.css("top"),
				left: wrapper.css("left")
			}).insertAfter( wrapper );
			wrapper.remove();
		}

		this.originalElement.css("resize", this.originalResizeStyle);
		_destroy(this.originalElement);

		return this;
	},

	_mouseCapture: function(event) {
		var i, handle,
			capture = false;

		for (i in this.handles) {
			handle = $(this.handles[i])[0];
			if (handle === event.target || $.contains(handle, event.target)) {
				capture = true;
			}
		}

		return !this.options.disabled && capture;
	},

	_mouseStart: function(event) {

		var curleft, curtop, cursor,
			o = this.options,
			iniPos = this.element.position(),
			el = this.element;

		this.resizing = true;

		// bugfix for http://dev.jquery.com/ticket/1749
		if ( (/absolute/).test( el.css("position") ) ) {
			el.css({ position: "absolute", top: el.css("top"), left: el.css("left") });
		} else if (el.is(".ui-draggable")) {
			el.css({ position: "absolute", top: iniPos.top, left: iniPos.left });
		}

		this._renderProxy();

		curleft = num(this.helper.css("left"));
		curtop = num(this.helper.css("top"));

		if (o.containment) {
			curleft += $(o.containment).scrollLeft() || 0;
			curtop += $(o.containment).scrollTop() || 0;
		}

		//Store needed variables
		this.offset = this.helper.offset();
		this.position = { left: curleft, top: curtop };
		this.size = this._helper ? { width: el.outerWidth(), height: el.outerHeight() } : { width: el.width(), height: el.height() };
		this.originalSize = this._helper ? { width: el.outerWidth(), height: el.outerHeight() } : { width: el.width(), height: el.height() };
		this.originalPosition = { left: curleft, top: curtop };
		this.sizeDiff = { width: el.outerWidth() - el.width(), height: el.outerHeight() - el.height() };
		this.originalMousePosition = { left: event.pageX, top: event.pageY };

		//Aspect Ratio
		this.aspectRatio = (typeof o.aspectRatio === "number") ? o.aspectRatio : ((this.originalSize.width / this.originalSize.height) || 1);

		cursor = $(".ui-resizable-" + this.axis).css("cursor");
		$("body").css("cursor", cursor === "auto" ? this.axis + "-resize" : cursor);

		el.addClass("ui-resizable-resizing");
		this._propagate("start", event);
		return true;
	},

	_mouseDrag: function(event) {

		//Increase performance, avoid regex
		var data,
			el = this.helper, props = {},
			smp = this.originalMousePosition,
			a = this.axis,
			prevTop = this.position.top,
			prevLeft = this.position.left,
			prevWidth = this.size.width,
			prevHeight = this.size.height,
			dx = (event.pageX-smp.left)||0,
			dy = (event.pageY-smp.top)||0,
			trigger = this._change[a];

		if (!trigger) {
			return false;
		}

		// Calculate the attrs that will be change
		data = trigger.apply(this, [event, dx, dy]);

		// Put this in the mouseDrag handler since the user can start pressing shift while resizing
		this._updateVirtualBoundaries(event.shiftKey);
		if (this._aspectRatio || event.shiftKey) {
			data = this._updateRatio(data, event);
		}

		data = this._respectSize(data, event);

		this._updateCache(data);

		// plugins callbacks need to be called first
		this._propagate("resize", event);

		if (this.position.top !== prevTop) {
			props.top = this.position.top + "px";
		}
		if (this.position.left !== prevLeft) {
			props.left = this.position.left + "px";
		}
		if (this.size.width !== prevWidth) {
			props.width = this.size.width + "px";
		}
		if (this.size.height !== prevHeight) {
			props.height = this.size.height + "px";
		}
		el.css(props);

		if (!this._helper && this._proportionallyResizeElements.length) {
			this._proportionallyResize();
		}

		// Call the user callback if the element was resized
		if ( ! $.isEmptyObject(props) ) {
			this._trigger("resize", event, this.ui());
		}

		return false;
	},

	_mouseStop: function(event) {

		this.resizing = false;
		var pr, ista, soffseth, soffsetw, s, left, top,
			o = this.options, that = this;

		if(this._helper) {

			pr = this._proportionallyResizeElements;
			ista = pr.length && (/textarea/i).test(pr[0].nodeName);
			soffseth = ista && $.ui.hasScroll(pr[0], "left") /* TODO - jump height */ ? 0 : that.sizeDiff.height;
			soffsetw = ista ? 0 : that.sizeDiff.width;

			s = { width: (that.helper.width()  - soffsetw), height: (that.helper.height() - soffseth) };
			left = (parseInt(that.element.css("left"), 10) + (that.position.left - that.originalPosition.left)) || null;
			top = (parseInt(that.element.css("top"), 10) + (that.position.top - that.originalPosition.top)) || null;

			if (!o.animate) {
				this.element.css($.extend(s, { top: top, left: left }));
			}

			that.helper.height(that.size.height);
			that.helper.width(that.size.width);

			if (this._helper && !o.animate) {
				this._proportionallyResize();
			}
		}

		$("body").css("cursor", "auto");

		this.element.removeClass("ui-resizable-resizing");

		this._propagate("stop", event);

		if (this._helper) {
			this.helper.remove();
		}

		return false;

	},

	_updateVirtualBoundaries: function(forceAspectRatio) {
		var pMinWidth, pMaxWidth, pMinHeight, pMaxHeight, b,
			o = this.options;

		b = {
			minWidth: isNumber(o.minWidth) ? o.minWidth : 0,
			maxWidth: isNumber(o.maxWidth) ? o.maxWidth : Infinity,
			minHeight: isNumber(o.minHeight) ? o.minHeight : 0,
			maxHeight: isNumber(o.maxHeight) ? o.maxHeight : Infinity
		};

		if(this._aspectRatio || forceAspectRatio) {
			// We want to create an enclosing box whose aspect ration is the requested one
			// First, compute the "projected" size for each dimension based on the aspect ratio and other dimension
			pMinWidth = b.minHeight * this.aspectRatio;
			pMinHeight = b.minWidth / this.aspectRatio;
			pMaxWidth = b.maxHeight * this.aspectRatio;
			pMaxHeight = b.maxWidth / this.aspectRatio;

			if(pMinWidth > b.minWidth) {
				b.minWidth = pMinWidth;
			}
			if(pMinHeight > b.minHeight) {
				b.minHeight = pMinHeight;
			}
			if(pMaxWidth < b.maxWidth) {
				b.maxWidth = pMaxWidth;
			}
			if(pMaxHeight < b.maxHeight) {
				b.maxHeight = pMaxHeight;
			}
		}
		this._vBoundaries = b;
	},

	_updateCache: function(data) {
		this.offset = this.helper.offset();
		if (isNumber(data.left)) {
			this.position.left = data.left;
		}
		if (isNumber(data.top)) {
			this.position.top = data.top;
		}
		if (isNumber(data.height)) {
			this.size.height = data.height;
		}
		if (isNumber(data.width)) {
			this.size.width = data.width;
		}
	},

	_updateRatio: function( data ) {

		var cpos = this.position,
			csize = this.size,
			a = this.axis;

		if (isNumber(data.height)) {
			data.width = (data.height * this.aspectRatio);
		} else if (isNumber(data.width)) {
			data.height = (data.width / this.aspectRatio);
		}

		if (a === "sw") {
			data.left = cpos.left + (csize.width - data.width);
			data.top = null;
		}
		if (a === "nw") {
			data.top = cpos.top + (csize.height - data.height);
			data.left = cpos.left + (csize.width - data.width);
		}

		return data;
	},

	_respectSize: function( data ) {

		var o = this._vBoundaries,
			a = this.axis,
			ismaxw = isNumber(data.width) && o.maxWidth && (o.maxWidth < data.width), ismaxh = isNumber(data.height) && o.maxHeight && (o.maxHeight < data.height),
			isminw = isNumber(data.width) && o.minWidth && (o.minWidth > data.width), isminh = isNumber(data.height) && o.minHeight && (o.minHeight > data.height),
			dw = this.originalPosition.left + this.originalSize.width,
			dh = this.position.top + this.size.height,
			cw = /sw|nw|w/.test(a), ch = /nw|ne|n/.test(a);
		if (isminw) {
			data.width = o.minWidth;
		}
		if (isminh) {
			data.height = o.minHeight;
		}
		if (ismaxw) {
			data.width = o.maxWidth;
		}
		if (ismaxh) {
			data.height = o.maxHeight;
		}

		if (isminw && cw) {
			data.left = dw - o.minWidth;
		}
		if (ismaxw && cw) {
			data.left = dw - o.maxWidth;
		}
		if (isminh && ch) {
			data.top = dh - o.minHeight;
		}
		if (ismaxh && ch) {
			data.top = dh - o.maxHeight;
		}

		// fixing jump error on top/left - bug #2330
		if (!data.width && !data.height && !data.left && data.top) {
			data.top = null;
		} else if (!data.width && !data.height && !data.top && data.left) {
			data.left = null;
		}

		return data;
	},

	_proportionallyResize: function() {

		if (!this._proportionallyResizeElements.length) {
			return;
		}

		var i, j, borders, paddings, prel,
			element = this.helper || this.element;

		for ( i=0; i < this._proportionallyResizeElements.length; i++) {

			prel = this._proportionallyResizeElements[i];

			if (!this.borderDif) {
				this.borderDif = [];
				borders = [prel.css("borderTopWidth"), prel.css("borderRightWidth"), prel.css("borderBottomWidth"), prel.css("borderLeftWidth")];
				paddings = [prel.css("paddingTop"), prel.css("paddingRight"), prel.css("paddingBottom"), prel.css("paddingLeft")];

				for ( j = 0; j < borders.length; j++ ) {
					this.borderDif[ j ] = ( parseInt( borders[ j ], 10 ) || 0 ) + ( parseInt( paddings[ j ], 10 ) || 0 );
				}
			}

			prel.css({
				height: (element.height() - this.borderDif[0] - this.borderDif[2]) || 0,
				width: (element.width() - this.borderDif[1] - this.borderDif[3]) || 0
			});

		}

	},

	_renderProxy: function() {

		var el = this.element, o = this.options;
		this.elementOffset = el.offset();

		if(this._helper) {

			this.helper = this.helper || $("<div style='overflow:hidden;'></div>");

			this.helper.addClass(this._helper).css({
				width: this.element.outerWidth() - 1,
				height: this.element.outerHeight() - 1,
				position: "absolute",
				left: this.elementOffset.left +"px",
				top: this.elementOffset.top +"px",
				zIndex: ++o.zIndex //TODO: Don't modify option
			});

			this.helper
				.appendTo("body")
				.disableSelection();

		} else {
			this.helper = this.element;
		}

	},

	_change: {
		e: function(event, dx) {
			return { width: this.originalSize.width + dx };
		},
		w: function(event, dx) {
			var cs = this.originalSize, sp = this.originalPosition;
			return { left: sp.left + dx, width: cs.width - dx };
		},
		n: function(event, dx, dy) {
			var cs = this.originalSize, sp = this.originalPosition;
			return { top: sp.top + dy, height: cs.height - dy };
		},
		s: function(event, dx, dy) {
			return { height: this.originalSize.height + dy };
		},
		se: function(event, dx, dy) {
			return $.extend(this._change.s.apply(this, arguments), this._change.e.apply(this, [event, dx, dy]));
		},
		sw: function(event, dx, dy) {
			return $.extend(this._change.s.apply(this, arguments), this._change.w.apply(this, [event, dx, dy]));
		},
		ne: function(event, dx, dy) {
			return $.extend(this._change.n.apply(this, arguments), this._change.e.apply(this, [event, dx, dy]));
		},
		nw: function(event, dx, dy) {
			return $.extend(this._change.n.apply(this, arguments), this._change.w.apply(this, [event, dx, dy]));
		}
	},

	_propagate: function(n, event) {
		$.ui.plugin.call(this, n, [event, this.ui()]);
		(n !== "resize" && this._trigger(n, event, this.ui()));
	},

	plugins: {},

	ui: function() {
		return {
			originalElement: this.originalElement,
			element: this.element,
			helper: this.helper,
			position: this.position,
			size: this.size,
			originalSize: this.originalSize,
			originalPosition: this.originalPosition
		};
	}

});

/*
 * Resizable Extensions
 */

$.ui.plugin.add("resizable", "animate", {

	stop: function( event ) {
		var that = $(this).data("ui-resizable"),
			o = that.options,
			pr = that._proportionallyResizeElements,
			ista = pr.length && (/textarea/i).test(pr[0].nodeName),
			soffseth = ista && $.ui.hasScroll(pr[0], "left") /* TODO - jump height */ ? 0 : that.sizeDiff.height,
			soffsetw = ista ? 0 : that.sizeDiff.width,
			style = { width: (that.size.width - soffsetw), height: (that.size.height - soffseth) },
			left = (parseInt(that.element.css("left"), 10) + (that.position.left - that.originalPosition.left)) || null,
			top = (parseInt(that.element.css("top"), 10) + (that.position.top - that.originalPosition.top)) || null;

		that.element.animate(
			$.extend(style, top && left ? { top: top, left: left } : {}), {
				duration: o.animateDuration,
				easing: o.animateEasing,
				step: function() {

					var data = {
						width: parseInt(that.element.css("width"), 10),
						height: parseInt(that.element.css("height"), 10),
						top: parseInt(that.element.css("top"), 10),
						left: parseInt(that.element.css("left"), 10)
					};

					if (pr && pr.length) {
						$(pr[0]).css({ width: data.width, height: data.height });
					}

					// propagating resize, and updating values for each animation step
					that._updateCache(data);
					that._propagate("resize", event);

				}
			}
		);
	}

});

$.ui.plugin.add("resizable", "containment", {

	start: function() {
		var element, p, co, ch, cw, width, height,
			that = $(this).data("ui-resizable"),
			o = that.options,
			el = that.element,
			oc = o.containment,
			ce = (oc instanceof $) ? oc.get(0) : (/parent/.test(oc)) ? el.parent().get(0) : oc;

		if (!ce) {
			return;
		}

		that.containerElement = $(ce);

		if (/document/.test(oc) || oc === document) {
			that.containerOffset = { left: 0, top: 0 };
			that.containerPosition = { left: 0, top: 0 };

			that.parentData = {
				element: $(document), left: 0, top: 0,
				width: $(document).width(), height: $(document).height() || document.body.parentNode.scrollHeight
			};
		}

		// i'm a node, so compute top, left, right, bottom
		else {
			element = $(ce);
			p = [];
			$([ "Top", "Right", "Left", "Bottom" ]).each(function(i, name) { p[i] = num(element.css("padding" + name)); });

			that.containerOffset = element.offset();
			that.containerPosition = element.position();
			that.containerSize = { height: (element.innerHeight() - p[3]), width: (element.innerWidth() - p[1]) };

			co = that.containerOffset;
			ch = that.containerSize.height;
			cw = that.containerSize.width;
			width = ($.ui.hasScroll(ce, "left") ? ce.scrollWidth : cw );
			height = ($.ui.hasScroll(ce) ? ce.scrollHeight : ch);

			that.parentData = {
				element: ce, left: co.left, top: co.top, width: width, height: height
			};
		}
	},

	resize: function( event ) {
		var woset, hoset, isParent, isOffsetRelative,
			that = $(this).data("ui-resizable"),
			o = that.options,
			co = that.containerOffset, cp = that.position,
			pRatio = that._aspectRatio || event.shiftKey,
			cop = { top:0, left:0 }, ce = that.containerElement;

		if (ce[0] !== document && (/static/).test(ce.css("position"))) {
			cop = co;
		}

		if (cp.left < (that._helper ? co.left : 0)) {
			that.size.width = that.size.width + (that._helper ? (that.position.left - co.left) : (that.position.left - cop.left));
			if (pRatio) {
				that.size.height = that.size.width / that.aspectRatio;
			}
			that.position.left = o.helper ? co.left : 0;
		}

		if (cp.top < (that._helper ? co.top : 0)) {
			that.size.height = that.size.height + (that._helper ? (that.position.top - co.top) : that.position.top);
			if (pRatio) {
				that.size.width = that.size.height * that.aspectRatio;
			}
			that.position.top = that._helper ? co.top : 0;
		}

		that.offset.left = that.parentData.left+that.position.left;
		that.offset.top = that.parentData.top+that.position.top;

		woset = Math.abs( (that._helper ? that.offset.left - cop.left : (that.offset.left - cop.left)) + that.sizeDiff.width );
		hoset = Math.abs( (that._helper ? that.offset.top - cop.top : (that.offset.top - co.top)) + that.sizeDiff.height );

		isParent = that.containerElement.get(0) === that.element.parent().get(0);
		isOffsetRelative = /relative|absolute/.test(that.containerElement.css("position"));

		if(isParent && isOffsetRelative) {
			woset -= that.parentData.left;
		}

		if (woset + that.size.width >= that.parentData.width) {
			that.size.width = that.parentData.width - woset;
			if (pRatio) {
				that.size.height = that.size.width / that.aspectRatio;
			}
		}

		if (hoset + that.size.height >= that.parentData.height) {
			that.size.height = that.parentData.height - hoset;
			if (pRatio) {
				that.size.width = that.size.height * that.aspectRatio;
			}
		}
	},

	stop: function(){
		var that = $(this).data("ui-resizable"),
			o = that.options,
			co = that.containerOffset,
			cop = that.containerPosition,
			ce = that.containerElement,
			helper = $(that.helper),
			ho = helper.offset(),
			w = helper.outerWidth() - that.sizeDiff.width,
			h = helper.outerHeight() - that.sizeDiff.height;

		if (that._helper && !o.animate && (/relative/).test(ce.css("position"))) {
			$(this).css({ left: ho.left - cop.left - co.left, width: w, height: h });
		}

		if (that._helper && !o.animate && (/static/).test(ce.css("position"))) {
			$(this).css({ left: ho.left - cop.left - co.left, width: w, height: h });
		}

	}
});

$.ui.plugin.add("resizable", "alsoResize", {

	start: function () {
		var that = $(this).data("ui-resizable"),
			o = that.options,
			_store = function (exp) {
				$(exp).each(function() {
					var el = $(this);
					el.data("ui-resizable-alsoresize", {
						width: parseInt(el.width(), 10), height: parseInt(el.height(), 10),
						left: parseInt(el.css("left"), 10), top: parseInt(el.css("top"), 10)
					});
				});
			};

		if (typeof(o.alsoResize) === "object" && !o.alsoResize.parentNode) {
			if (o.alsoResize.length) { o.alsoResize = o.alsoResize[0]; _store(o.alsoResize); }
			else { $.each(o.alsoResize, function (exp) { _store(exp); }); }
		}else{
			_store(o.alsoResize);
		}
	},

	resize: function (event, ui) {
		var that = $(this).data("ui-resizable"),
			o = that.options,
			os = that.originalSize,
			op = that.originalPosition,
			delta = {
				height: (that.size.height - os.height) || 0, width: (that.size.width - os.width) || 0,
				top: (that.position.top - op.top) || 0, left: (that.position.left - op.left) || 0
			},

			_alsoResize = function (exp, c) {
				$(exp).each(function() {
					var el = $(this), start = $(this).data("ui-resizable-alsoresize"), style = {},
						css = c && c.length ? c : el.parents(ui.originalElement[0]).length ? ["width", "height"] : ["width", "height", "top", "left"];

					$.each(css, function (i, prop) {
						var sum = (start[prop]||0) + (delta[prop]||0);
						if (sum && sum >= 0) {
							style[prop] = sum || null;
						}
					});

					el.css(style);
				});
			};

		if (typeof(o.alsoResize) === "object" && !o.alsoResize.nodeType) {
			$.each(o.alsoResize, function (exp, c) { _alsoResize(exp, c); });
		}else{
			_alsoResize(o.alsoResize);
		}
	},

	stop: function () {
		$(this).removeData("resizable-alsoresize");
	}
});

$.ui.plugin.add("resizable", "ghost", {

	start: function() {

		var that = $(this).data("ui-resizable"), o = that.options, cs = that.size;

		that.ghost = that.originalElement.clone();
		that.ghost
			.css({ opacity: 0.25, display: "block", position: "relative", height: cs.height, width: cs.width, margin: 0, left: 0, top: 0 })
			.addClass("ui-resizable-ghost")
			.addClass(typeof o.ghost === "string" ? o.ghost : "");

		that.ghost.appendTo(that.helper);

	},

	resize: function(){
		var that = $(this).data("ui-resizable");
		if (that.ghost) {
			that.ghost.css({ position: "relative", height: that.size.height, width: that.size.width });
		}
	},

	stop: function() {
		var that = $(this).data("ui-resizable");
		if (that.ghost && that.helper) {
			that.helper.get(0).removeChild(that.ghost.get(0));
		}
	}

});

$.ui.plugin.add("resizable", "grid", {

	resize: function() {
		var that = $(this).data("ui-resizable"),
			o = that.options,
			cs = that.size,
			os = that.originalSize,
			op = that.originalPosition,
			a = that.axis,
			grid = typeof o.grid === "number" ? [o.grid, o.grid] : o.grid,
			gridX = (grid[0]||1),
			gridY = (grid[1]||1),
			ox = Math.round((cs.width - os.width) / gridX) * gridX,
			oy = Math.round((cs.height - os.height) / gridY) * gridY,
			newWidth = os.width + ox,
			newHeight = os.height + oy,
			isMaxWidth = o.maxWidth && (o.maxWidth < newWidth),
			isMaxHeight = o.maxHeight && (o.maxHeight < newHeight),
			isMinWidth = o.minWidth && (o.minWidth > newWidth),
			isMinHeight = o.minHeight && (o.minHeight > newHeight);

		o.grid = grid;

		if (isMinWidth) {
			newWidth = newWidth + gridX;
		}
		if (isMinHeight) {
			newHeight = newHeight + gridY;
		}
		if (isMaxWidth) {
			newWidth = newWidth - gridX;
		}
		if (isMaxHeight) {
			newHeight = newHeight - gridY;
		}

		if (/^(se|s|e)$/.test(a)) {
			that.size.width = newWidth;
			that.size.height = newHeight;
		} else if (/^(ne)$/.test(a)) {
			that.size.width = newWidth;
			that.size.height = newHeight;
			that.position.top = op.top - oy;
		} else if (/^(sw)$/.test(a)) {
			that.size.width = newWidth;
			that.size.height = newHeight;
			that.position.left = op.left - ox;
		} else {
			that.size.width = newWidth;
			that.size.height = newHeight;
			that.position.top = op.top - oy;
			that.position.left = op.left - ox;
		}
	}

});

})(jQuery);
(function( $, undefined ) {

$.widget("ui.selectable", $.ui.mouse, {
	version: "1.10.1",
	options: {
		appendTo: "body",
		autoRefresh: true,
		distance: 0,
		filter: "*",
		tolerance: "touch",

		// callbacks
		selected: null,
		selecting: null,
		start: null,
		stop: null,
		unselected: null,
		unselecting: null
	},
	_create: function() {
		var selectees,
			that = this;

		this.element.addClass("ui-selectable");

		this.dragged = false;

		// cache selectee children based on filter
		this.refresh = function() {
			selectees = $(that.options.filter, that.element[0]);
			selectees.addClass("ui-selectee");
			selectees.each(function() {
				var $this = $(this),
					pos = $this.offset();
				$.data(this, "selectable-item", {
					element: this,
					$element: $this,
					left: pos.left,
					top: pos.top,
					right: pos.left + $this.outerWidth(),
					bottom: pos.top + $this.outerHeight(),
					startselected: false,
					selected: $this.hasClass("ui-selected"),
					selecting: $this.hasClass("ui-selecting"),
					unselecting: $this.hasClass("ui-unselecting")
				});
			});
		};
		this.refresh();

		this.selectees = selectees.addClass("ui-selectee");

		this._mouseInit();

		this.helper = $("<div class='ui-selectable-helper'></div>");
	},

	_destroy: function() {
		this.selectees
			.removeClass("ui-selectee")
			.removeData("selectable-item");
		this.element
			.removeClass("ui-selectable ui-selectable-disabled");
		this._mouseDestroy();
	},

	_mouseStart: function(event) {
		var that = this,
			options = this.options;

		this.opos = [event.pageX, event.pageY];

		if (this.options.disabled) {
			return;
		}

		this.selectees = $(options.filter, this.element[0]);

		this._trigger("start", event);

		$(options.appendTo).append(this.helper);
		// position helper (lasso)
		this.helper.css({
			"left": event.pageX,
			"top": event.pageY,
			"width": 0,
			"height": 0
		});

		if (options.autoRefresh) {
			this.refresh();
		}

		this.selectees.filter(".ui-selected").each(function() {
			var selectee = $.data(this, "selectable-item");
			selectee.startselected = true;
			if (!event.metaKey && !event.ctrlKey) {
				selectee.$element.removeClass("ui-selected");
				selectee.selected = false;
				selectee.$element.addClass("ui-unselecting");
				selectee.unselecting = true;
				// selectable UNSELECTING callback
				that._trigger("unselecting", event, {
					unselecting: selectee.element
				});
			}
		});

		$(event.target).parents().addBack().each(function() {
			var doSelect,
				selectee = $.data(this, "selectable-item");
			if (selectee) {
				doSelect = (!event.metaKey && !event.ctrlKey) || !selectee.$element.hasClass("ui-selected");
				selectee.$element
					.removeClass(doSelect ? "ui-unselecting" : "ui-selected")
					.addClass(doSelect ? "ui-selecting" : "ui-unselecting");
				selectee.unselecting = !doSelect;
				selectee.selecting = doSelect;
				selectee.selected = doSelect;
				// selectable (UN)SELECTING callback
				if (doSelect) {
					that._trigger("selecting", event, {
						selecting: selectee.element
					});
				} else {
					that._trigger("unselecting", event, {
						unselecting: selectee.element
					});
				}
				return false;
			}
		});

	},

	_mouseDrag: function(event) {

		this.dragged = true;

		if (this.options.disabled) {
			return;
		}

		var tmp,
			that = this,
			options = this.options,
			x1 = this.opos[0],
			y1 = this.opos[1],
			x2 = event.pageX,
			y2 = event.pageY;

		if (x1 > x2) { tmp = x2; x2 = x1; x1 = tmp; }
		if (y1 > y2) { tmp = y2; y2 = y1; y1 = tmp; }
		this.helper.css({left: x1, top: y1, width: x2-x1, height: y2-y1});

		this.selectees.each(function() {
			var selectee = $.data(this, "selectable-item"),
				hit = false;

			//prevent helper from being selected if appendTo: selectable
			if (!selectee || selectee.element === that.element[0]) {
				return;
			}

			if (options.tolerance === "touch") {
				hit = ( !(selectee.left > x2 || selectee.right < x1 || selectee.top > y2 || selectee.bottom < y1) );
			} else if (options.tolerance === "fit") {
				hit = (selectee.left > x1 && selectee.right < x2 && selectee.top > y1 && selectee.bottom < y2);
			}

			if (hit) {
				// SELECT
				if (selectee.selected) {
					selectee.$element.removeClass("ui-selected");
					selectee.selected = false;
				}
				if (selectee.unselecting) {
					selectee.$element.removeClass("ui-unselecting");
					selectee.unselecting = false;
				}
				if (!selectee.selecting) {
					selectee.$element.addClass("ui-selecting");
					selectee.selecting = true;
					// selectable SELECTING callback
					that._trigger("selecting", event, {
						selecting: selectee.element
					});
				}
			} else {
				// UNSELECT
				if (selectee.selecting) {
					if ((event.metaKey || event.ctrlKey) && selectee.startselected) {
						selectee.$element.removeClass("ui-selecting");
						selectee.selecting = false;
						selectee.$element.addClass("ui-selected");
						selectee.selected = true;
					} else {
						selectee.$element.removeClass("ui-selecting");
						selectee.selecting = false;
						if (selectee.startselected) {
							selectee.$element.addClass("ui-unselecting");
							selectee.unselecting = true;
						}
						// selectable UNSELECTING callback
						that._trigger("unselecting", event, {
							unselecting: selectee.element
						});
					}
				}
				if (selectee.selected) {
					if (!event.metaKey && !event.ctrlKey && !selectee.startselected) {
						selectee.$element.removeClass("ui-selected");
						selectee.selected = false;

						selectee.$element.addClass("ui-unselecting");
						selectee.unselecting = true;
						// selectable UNSELECTING callback
						that._trigger("unselecting", event, {
							unselecting: selectee.element
						});
					}
				}
			}
		});

		return false;
	},

	_mouseStop: function(event) {
		var that = this;

		this.dragged = false;

		$(".ui-unselecting", this.element[0]).each(function() {
			var selectee = $.data(this, "selectable-item");
			selectee.$element.removeClass("ui-unselecting");
			selectee.unselecting = false;
			selectee.startselected = false;
			that._trigger("unselected", event, {
				unselected: selectee.element
			});
		});
		$(".ui-selecting", this.element[0]).each(function() {
			var selectee = $.data(this, "selectable-item");
			selectee.$element.removeClass("ui-selecting").addClass("ui-selected");
			selectee.selecting = false;
			selectee.selected = true;
			selectee.startselected = true;
			that._trigger("selected", event, {
				selected: selectee.element
			});
		});
		this._trigger("stop", event);

		this.helper.remove();

		return false;
	}

});

})(jQuery);
(function( $, undefined ) {

/*jshint loopfunc: true */

function isOverAxis( x, reference, size ) {
	return ( x > reference ) && ( x < ( reference + size ) );
}

$.widget("ui.sortable", $.ui.mouse, {
	version: "1.10.1",
	widgetEventPrefix: "sort",
	ready: false,
	options: {
		appendTo: "parent",
		axis: false,
		connectWith: false,
		containment: false,
		cursor: "auto",
		cursorAt: false,
		dropOnEmpty: true,
		forcePlaceholderSize: false,
		forceHelperSize: false,
		grid: false,
		handle: false,
		helper: "original",
		items: "> *",
		opacity: false,
		placeholder: false,
		revert: false,
		scroll: true,
		scrollSensitivity: 20,
		scrollSpeed: 20,
		scope: "default",
		tolerance: "intersect",
		zIndex: 1000,

		// callbacks
		activate: null,
		beforeStop: null,
		change: null,
		deactivate: null,
		out: null,
		over: null,
		receive: null,
		remove: null,
		sort: null,
		start: null,
		stop: null,
		update: null
	},
	_create: function() {

		var o = this.options;
		this.containerCache = {};
		this.element.addClass("ui-sortable");

		//Get the items
		this.refresh();

		//Let's determine if the items are being displayed horizontally
		this.floating = this.items.length ? o.axis === "x" || (/left|right/).test(this.items[0].item.css("float")) || (/inline|table-cell/).test(this.items[0].item.css("display")) : false;

		//Let's determine the parent's offset
		this.offset = this.element.offset();

		//Initialize mouse events for interaction
		this._mouseInit();

		//We're ready to go
		this.ready = true;

	},

	_destroy: function() {
		this.element
			.removeClass("ui-sortable ui-sortable-disabled");
		this._mouseDestroy();

		for ( var i = this.items.length - 1; i >= 0; i-- ) {
			this.items[i].item.removeData(this.widgetName + "-item");
		}

		return this;
	},

	_setOption: function(key, value){
		if ( key === "disabled" ) {
			this.options[ key ] = value;

			this.widget().toggleClass( "ui-sortable-disabled", !!value );
		} else {
			// Don't call widget base _setOption for disable as it adds ui-state-disabled class
			$.Widget.prototype._setOption.apply(this, arguments);
		}
	},

	_mouseCapture: function(event, overrideHandle) {
		var currentItem = null,
			validHandle = false,
			that = this;

		if (this.reverting) {
			return false;
		}

		if(this.options.disabled || this.options.type === "static") {
			return false;
		}

		//We have to refresh the items data once first
		this._refreshItems(event);

		//Find out if the clicked node (or one of its parents) is a actual item in this.items
		$(event.target).parents().each(function() {
			if($.data(this, that.widgetName + "-item") === that) {
				currentItem = $(this);
				return false;
			}
		});
		if($.data(event.target, that.widgetName + "-item") === that) {
			currentItem = $(event.target);
		}

		if(!currentItem) {
			return false;
		}
		if(this.options.handle && !overrideHandle) {
			$(this.options.handle, currentItem).find("*").addBack().each(function() {
				if(this === event.target) {
					validHandle = true;
				}
			});
			if(!validHandle) {
				return false;
			}
		}

		this.currentItem = currentItem;
		this._removeCurrentsFromItems();
		return true;

	},

	_mouseStart: function(event, overrideHandle, noActivation) {

		var i,
			o = this.options;

		this.currentContainer = this;

		//We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture
		this.refreshPositions();

		//Create and append the visible helper
		this.helper = this._createHelper(event);

		//Cache the helper size
		this._cacheHelperProportions();

		/*
		 * - Position generation -
		 * This block generates everything position related - it's the core of draggables.
		 */

		//Cache the margins of the original element
		this._cacheMargins();

		//Get the next scrolling parent
		this.scrollParent = this.helper.scrollParent();

		//The element's absolute position on the page minus margins
		this.offset = this.currentItem.offset();
		this.offset = {
			top: this.offset.top - this.margins.top,
			left: this.offset.left - this.margins.left
		};

		$.extend(this.offset, {
			click: { //Where the click happened, relative to the element
				left: event.pageX - this.offset.left,
				top: event.pageY - this.offset.top
			},
			parent: this._getParentOffset(),
			relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
		});

		// Only after we got the offset, we can change the helper's position to absolute
		// TODO: Still need to figure out a way to make relative sorting possible
		this.helper.css("position", "absolute");
		this.cssPosition = this.helper.css("position");

		//Generate the original position
		this.originalPosition = this._generatePosition(event);
		this.originalPageX = event.pageX;
		this.originalPageY = event.pageY;

		//Adjust the mouse offset relative to the helper if "cursorAt" is supplied
		(o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));

		//Cache the former DOM position
		this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };

		//If the helper is not the original, hide the original so it's not playing any role during the drag, won't cause anything bad this way
		if(this.helper[0] !== this.currentItem[0]) {
			this.currentItem.hide();
		}

		//Create the placeholder
		this._createPlaceholder();

		//Set a containment if given in the options
		if(o.containment) {
			this._setContainment();
		}

		if(o.cursor) { // cursor option
			if ($("body").css("cursor")) {
				this._storedCursor = $("body").css("cursor");
			}
			$("body").css("cursor", o.cursor);
		}

		if(o.opacity) { // opacity option
			if (this.helper.css("opacity")) {
				this._storedOpacity = this.helper.css("opacity");
			}
			this.helper.css("opacity", o.opacity);
		}

		if(o.zIndex) { // zIndex option
			if (this.helper.css("zIndex")) {
				this._storedZIndex = this.helper.css("zIndex");
			}
			this.helper.css("zIndex", o.zIndex);
		}

		//Prepare scrolling
		if(this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {
			this.overflowOffset = this.scrollParent.offset();
		}

		//Call callbacks
		this._trigger("start", event, this._uiHash());

		//Recache the helper size
		if(!this._preserveHelperProportions) {
			this._cacheHelperProportions();
		}


		//Post "activate" events to possible containers
		if( !noActivation ) {
			for ( i = this.containers.length - 1; i >= 0; i-- ) {
				this.containers[ i ]._trigger( "activate", event, this._uiHash( this ) );
			}
		}

		//Prepare possible droppables
		if($.ui.ddmanager) {
			$.ui.ddmanager.current = this;
		}

		if ($.ui.ddmanager && !o.dropBehaviour) {
			$.ui.ddmanager.prepareOffsets(this, event);
		}

		this.dragging = true;

		this.helper.addClass("ui-sortable-helper");
		this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position
		return true;

	},

	_mouseDrag: function(event) {
		var i, item, itemElement, intersection,
			o = this.options,
			scrolled = false;

		//Compute the helpers position
		this.position = this._generatePosition(event);
		this.positionAbs = this._convertPositionTo("absolute");

		if (!this.lastPositionAbs) {
			this.lastPositionAbs = this.positionAbs;
		}

		//Do scrolling
		if(this.options.scroll) {
			if(this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {

				if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) {
					this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
				} else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity) {
					this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
				}

				if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) {
					this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
				} else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity) {
					this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
				}

			} else {

				if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
					scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
				} else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) {
					scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
				}

				if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
					scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
				} else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) {
					scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
				}

			}

			if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
				$.ui.ddmanager.prepareOffsets(this, event);
			}
		}

		//Regenerate the absolute position used for position checks
		this.positionAbs = this._convertPositionTo("absolute");

		//Set the helper position
		if(!this.options.axis || this.options.axis !== "y") {
			this.helper[0].style.left = this.position.left+"px";
		}
		if(!this.options.axis || this.options.axis !== "x") {
			this.helper[0].style.top = this.position.top+"px";
		}

		//Rearrange
		for (i = this.items.length - 1; i >= 0; i--) {

			//Cache variables and intersection, continue if no intersection
			item = this.items[i];
			itemElement = item.item[0];
			intersection = this._intersectsWithPointer(item);
			if (!intersection) {
				continue;
			}

			// Only put the placeholder inside the current Container, skip all
			// items form other containers. This works because when moving
			// an item from one container to another the
			// currentContainer is switched before the placeholder is moved.
			//
			// Without this moving items in "sub-sortables" can cause the placeholder to jitter
			// beetween the outer and inner container.
			if (item.instance !== this.currentContainer) {
				continue;
			}

			// cannot intersect with itself
			// no useless actions that have been done before
			// no action if the item moved is the parent of the item checked
			if (itemElement !== this.currentItem[0] &&
				this.placeholder[intersection === 1 ? "next" : "prev"]()[0] !== itemElement &&
				!$.contains(this.placeholder[0], itemElement) &&
				(this.options.type === "semi-dynamic" ? !$.contains(this.element[0], itemElement) : true)
			) {

				this.direction = intersection === 1 ? "down" : "up";

				if (this.options.tolerance === "pointer" || this._intersectsWithSides(item)) {
					this._rearrange(event, item);
				} else {
					break;
				}

				this._trigger("change", event, this._uiHash());
				break;
			}
		}

		//Post events to containers
		this._contactContainers(event);

		//Interconnect with droppables
		if($.ui.ddmanager) {
			$.ui.ddmanager.drag(this, event);
		}

		//Call callbacks
		this._trigger("sort", event, this._uiHash());

		this.lastPositionAbs = this.positionAbs;
		return false;

	},

	_mouseStop: function(event, noPropagation) {

		if(!event) {
			return;
		}

		//If we are using droppables, inform the manager about the drop
		if ($.ui.ddmanager && !this.options.dropBehaviour) {
			$.ui.ddmanager.drop(this, event);
		}

		if(this.options.revert) {
			var that = this,
				cur = this.placeholder.offset();

			this.reverting = true;

			$(this.helper).animate({
				left: cur.left - this.offset.parent.left - this.margins.left + (this.offsetParent[0] === document.body ? 0 : this.offsetParent[0].scrollLeft),
				top: cur.top - this.offset.parent.top - this.margins.top + (this.offsetParent[0] === document.body ? 0 : this.offsetParent[0].scrollTop)
			}, parseInt(this.options.revert, 10) || 500, function() {
				that._clear(event);
			});
		} else {
			this._clear(event, noPropagation);
		}

		return false;

	},

	cancel: function() {

		if(this.dragging) {

			this._mouseUp({ target: null });

			if(this.options.helper === "original") {
				this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
			} else {
				this.currentItem.show();
			}

			//Post deactivating events to containers
			for (var i = this.containers.length - 1; i >= 0; i--){
				this.containers[i]._trigger("deactivate", null, this._uiHash(this));
				if(this.containers[i].containerCache.over) {
					this.containers[i]._trigger("out", null, this._uiHash(this));
					this.containers[i].containerCache.over = 0;
				}
			}

		}

		if (this.placeholder) {
			//$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
			if(this.placeholder[0].parentNode) {
				this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
			}
			if(this.options.helper !== "original" && this.helper && this.helper[0].parentNode) {
				this.helper.remove();
			}

			$.extend(this, {
				helper: null,
				dragging: false,
				reverting: false,
				_noFinalSort: null
			});

			if(this.domPosition.prev) {
				$(this.domPosition.prev).after(this.currentItem);
			} else {
				$(this.domPosition.parent).prepend(this.currentItem);
			}
		}

		return this;

	},

	serialize: function(o) {

		var items = this._getItemsAsjQuery(o && o.connected),
			str = [];
		o = o || {};

		$(items).each(function() {
			var res = ($(o.item || this).attr(o.attribute || "id") || "").match(o.expression || (/(.+)[\-=_](.+)/));
			if (res) {
				str.push((o.key || res[1]+"[]")+"="+(o.key && o.expression ? res[1] : res[2]));
			}
		});

		if(!str.length && o.key) {
			str.push(o.key + "=");
		}

		return str.join("&");

	},

	toArray: function(o) {

		var items = this._getItemsAsjQuery(o && o.connected),
			ret = [];

		o = o || {};

		items.each(function() { ret.push($(o.item || this).attr(o.attribute || "id") || ""); });
		return ret;

	},

	/* Be careful with the following core functions */
	_intersectsWith: function(item) {

		var x1 = this.positionAbs.left,
			x2 = x1 + this.helperProportions.width,
			y1 = this.positionAbs.top,
			y2 = y1 + this.helperProportions.height,
			l = item.left,
			r = l + item.width,
			t = item.top,
			b = t + item.height,
			dyClick = this.offset.click.top,
			dxClick = this.offset.click.left,
			isOverElement = (y1 + dyClick) > t && (y1 + dyClick) < b && (x1 + dxClick) > l && (x1 + dxClick) < r;

		if ( this.options.tolerance === "pointer" ||
			this.options.forcePointerForContainers ||
			(this.options.tolerance !== "pointer" && this.helperProportions[this.floating ? "width" : "height"] > item[this.floating ? "width" : "height"])
		) {
			return isOverElement;
		} else {

			return (l < x1 + (this.helperProportions.width / 2) && // Right Half
				x2 - (this.helperProportions.width / 2) < r && // Left Half
				t < y1 + (this.helperProportions.height / 2) && // Bottom Half
				y2 - (this.helperProportions.height / 2) < b ); // Top Half

		}
	},

	_intersectsWithPointer: function(item) {

		var isOverElementHeight = (this.options.axis === "x") || isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
			isOverElementWidth = (this.options.axis === "y") || isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
			isOverElement = isOverElementHeight && isOverElementWidth,
			verticalDirection = this._getDragVerticalDirection(),
			horizontalDirection = this._getDragHorizontalDirection();

		if (!isOverElement) {
			return false;
		}

		return this.floating ?
			( ((horizontalDirection && horizontalDirection === "right") || verticalDirection === "down") ? 2 : 1 )
			: ( verticalDirection && (verticalDirection === "down" ? 2 : 1) );

	},

	_intersectsWithSides: function(item) {

		var isOverBottomHalf = isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height),
			isOverRightHalf = isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
			verticalDirection = this._getDragVerticalDirection(),
			horizontalDirection = this._getDragHorizontalDirection();

		if (this.floating && horizontalDirection) {
			return ((horizontalDirection === "right" && isOverRightHalf) || (horizontalDirection === "left" && !isOverRightHalf));
		} else {
			return verticalDirection && ((verticalDirection === "down" && isOverBottomHalf) || (verticalDirection === "up" && !isOverBottomHalf));
		}

	},

	_getDragVerticalDirection: function() {
		var delta = this.positionAbs.top - this.lastPositionAbs.top;
		return delta !== 0 && (delta > 0 ? "down" : "up");
	},

	_getDragHorizontalDirection: function() {
		var delta = this.positionAbs.left - this.lastPositionAbs.left;
		return delta !== 0 && (delta > 0 ? "right" : "left");
	},

	refresh: function(event) {
		this._refreshItems(event);
		this.refreshPositions();
		return this;
	},

	_connectWith: function() {
		var options = this.options;
		return options.connectWith.constructor === String ? [options.connectWith] : options.connectWith;
	},

	_getItemsAsjQuery: function(connected) {

		var i, j, cur, inst,
			items = [],
			queries = [],
			connectWith = this._connectWith();

		if(connectWith && connected) {
			for (i = connectWith.length - 1; i >= 0; i--){
				cur = $(connectWith[i]);
				for ( j = cur.length - 1; j >= 0; j--){
					inst = $.data(cur[j], this.widgetFullName);
					if(inst && inst !== this && !inst.options.disabled) {
						queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper").not(".ui-sortable-placeholder"), inst]);
					}
				}
			}
		}

		queries.push([$.isFunction(this.options.items) ? this.options.items.call(this.element, null, { options: this.options, item: this.currentItem }) : $(this.options.items, this.element).not(".ui-sortable-helper").not(".ui-sortable-placeholder"), this]);

		for (i = queries.length - 1; i >= 0; i--){
			queries[i][0].each(function() {
				items.push(this);
			});
		}

		return $(items);

	},

	_removeCurrentsFromItems: function() {

		var list = this.currentItem.find(":data(" + this.widgetName + "-item)");

		this.items = $.grep(this.items, function (item) {
			for (var j=0; j < list.length; j++) {
				if(list[j] === item.item[0]) {
					return false;
				}
			}
			return true;
		});

	},

	_refreshItems: function(event) {

		this.items = [];
		this.containers = [this];

		var i, j, cur, inst, targetData, _queries, item, queriesLength,
			items = this.items,
			queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]],
			connectWith = this._connectWith();

		if(connectWith && this.ready) { //Shouldn't be run the first time through due to massive slow-down
			for (i = connectWith.length - 1; i >= 0; i--){
				cur = $(connectWith[i]);
				for (j = cur.length - 1; j >= 0; j--){
					inst = $.data(cur[j], this.widgetFullName);
					if(inst && inst !== this && !inst.options.disabled) {
						queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
						this.containers.push(inst);
					}
				}
			}
		}

		for (i = queries.length - 1; i >= 0; i--) {
			targetData = queries[i][1];
			_queries = queries[i][0];

			for (j=0, queriesLength = _queries.length; j < queriesLength; j++) {
				item = $(_queries[j]);

				item.data(this.widgetName + "-item", targetData); // Data for target checking (mouse manager)

				items.push({
					item: item,
					instance: targetData,
					width: 0, height: 0,
					left: 0, top: 0
				});
			}
		}

	},

	refreshPositions: function(fast) {

		//This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change
		if(this.offsetParent && this.helper) {
			this.offset.parent = this._getParentOffset();
		}

		var i, item, t, p;

		for (i = this.items.length - 1; i >= 0; i--){
			item = this.items[i];

			//We ignore calculating positions of all connected containers when we're not over them
			if(item.instance !== this.currentContainer && this.currentContainer && item.item[0] !== this.currentItem[0]) {
				continue;
			}

			t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;

			if (!fast) {
				item.width = t.outerWidth();
				item.height = t.outerHeight();
			}

			p = t.offset();
			item.left = p.left;
			item.top = p.top;
		}

		if(this.options.custom && this.options.custom.refreshContainers) {
			this.options.custom.refreshContainers.call(this);
		} else {
			for (i = this.containers.length - 1; i >= 0; i--){
				p = this.containers[i].element.offset();
				this.containers[i].containerCache.left = p.left;
				this.containers[i].containerCache.top = p.top;
				this.containers[i].containerCache.width	= this.containers[i].element.outerWidth();
				this.containers[i].containerCache.height = this.containers[i].element.outerHeight();
			}
		}

		return this;
	},

	_createPlaceholder: function(that) {
		that = that || this;
		var className,
			o = that.options;

		if(!o.placeholder || o.placeholder.constructor === String) {
			className = o.placeholder;
			o.placeholder = {
				element: function() {

					var el = $(document.createElement(that.currentItem[0].nodeName))
						.addClass(className || that.currentItem[0].className+" ui-sortable-placeholder")
						.removeClass("ui-sortable-helper")[0];

					if(!className) {
						el.style.visibility = "hidden";
					}

					return el;
				},
				update: function(container, p) {

					// 1. If a className is set as 'placeholder option, we don't force sizes - the class is responsible for that
					// 2. The option 'forcePlaceholderSize can be enabled to force it even if a class name is specified
					if(className && !o.forcePlaceholderSize) {
						return;
					}

					//If the element doesn't have a actual height by itself (without styles coming from a stylesheet), it receives the inline height from the dragged item
					if(!p.height()) { p.height(that.currentItem.innerHeight() - parseInt(that.currentItem.css("paddingTop")||0, 10) - parseInt(that.currentItem.css("paddingBottom")||0, 10)); }
					if(!p.width()) { p.width(that.currentItem.innerWidth() - parseInt(that.currentItem.css("paddingLeft")||0, 10) - parseInt(that.currentItem.css("paddingRight")||0, 10)); }
				}
			};
		}

		//Create the placeholder
		that.placeholder = $(o.placeholder.element.call(that.element, that.currentItem));

		//Append it after the actual current item
		that.currentItem.after(that.placeholder);

		//Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317)
		o.placeholder.update(that, that.placeholder);

	},

	_contactContainers: function(event) {
		var i, j, dist, itemWithLeastDistance, posProperty, sizeProperty, base, cur, nearBottom,
			innermostContainer = null,
			innermostIndex = null;

		// get innermost container that intersects with item
		for (i = this.containers.length - 1; i >= 0; i--) {

			// never consider a container that's located within the item itself
			if($.contains(this.currentItem[0], this.containers[i].element[0])) {
				continue;
			}

			if(this._intersectsWith(this.containers[i].containerCache)) {

				// if we've already found a container and it's more "inner" than this, then continue
				if(innermostContainer && $.contains(this.containers[i].element[0], innermostContainer.element[0])) {
					continue;
				}

				innermostContainer = this.containers[i];
				innermostIndex = i;

			} else {
				// container doesn't intersect. trigger "out" event if necessary
				if(this.containers[i].containerCache.over) {
					this.containers[i]._trigger("out", event, this._uiHash(this));
					this.containers[i].containerCache.over = 0;
				}
			}

		}

		// if no intersecting containers found, return
		if(!innermostContainer) {
			return;
		}

		// move the item into the container if it's not there already
		if(this.containers.length === 1) {
			this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
			this.containers[innermostIndex].containerCache.over = 1;
		} else {

			//When entering a new container, we will find the item with the least distance and append our item near it
			dist = 10000;
			itemWithLeastDistance = null;
			posProperty = this.containers[innermostIndex].floating ? "left" : "top";
			sizeProperty = this.containers[innermostIndex].floating ? "width" : "height";
			base = this.positionAbs[posProperty] + this.offset.click[posProperty];
			for (j = this.items.length - 1; j >= 0; j--) {
				if(!$.contains(this.containers[innermostIndex].element[0], this.items[j].item[0])) {
					continue;
				}
				if(this.items[j].item[0] === this.currentItem[0]) {
					continue;
				}
				cur = this.items[j].item.offset()[posProperty];
				nearBottom = false;
				if(Math.abs(cur - base) > Math.abs(cur + this.items[j][sizeProperty] - base)){
					nearBottom = true;
					cur += this.items[j][sizeProperty];
				}

				if(Math.abs(cur - base) < dist) {
					dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
					this.direction = nearBottom ? "up": "down";
				}
			}

			//Check if dropOnEmpty is enabled
			if(!itemWithLeastDistance && !this.options.dropOnEmpty) {
				return;
			}

			this.currentContainer = this.containers[innermostIndex];
			itemWithLeastDistance ? this._rearrange(event, itemWithLeastDistance, null, true) : this._rearrange(event, null, this.containers[innermostIndex].element, true);
			this._trigger("change", event, this._uiHash());
			this.containers[innermostIndex]._trigger("change", event, this._uiHash(this));

			//Update the placeholder
			this.options.placeholder.update(this.currentContainer, this.placeholder);

			this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
			this.containers[innermostIndex].containerCache.over = 1;
		}


	},

	_createHelper: function(event) {

		var o = this.options,
			helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper === "clone" ? this.currentItem.clone() : this.currentItem);

		//Add the helper to the DOM if that didn't happen already
		if(!helper.parents("body").length) {
			$(o.appendTo !== "parent" ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]);
		}

		if(helper[0] === this.currentItem[0]) {
			this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") };
		}

		if(!helper[0].style.width || o.forceHelperSize) {
			helper.width(this.currentItem.width());
		}
		if(!helper[0].style.height || o.forceHelperSize) {
			helper.height(this.currentItem.height());
		}

		return helper;

	},

	_adjustOffsetFromHelper: function(obj) {
		if (typeof obj === "string") {
			obj = obj.split(" ");
		}
		if ($.isArray(obj)) {
			obj = {left: +obj[0], top: +obj[1] || 0};
		}
		if ("left" in obj) {
			this.offset.click.left = obj.left + this.margins.left;
		}
		if ("right" in obj) {
			this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
		}
		if ("top" in obj) {
			this.offset.click.top = obj.top + this.margins.top;
		}
		if ("bottom" in obj) {
			this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
		}
	},

	_getParentOffset: function() {


		//Get the offsetParent and cache its position
		this.offsetParent = this.helper.offsetParent();
		var po = this.offsetParent.offset();

		// This is a special case where we need to modify a offset calculated on start, since the following happened:
		// 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
		// 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
		//    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
		if(this.cssPosition === "absolute" && this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
			po.left += this.scrollParent.scrollLeft();
			po.top += this.scrollParent.scrollTop();
		}

		// This needs to be actually done for all browsers, since pageX/pageY includes this information
		// with an ugly IE fix
		if( this.offsetParent[0] === document.body || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() === "html" && $.ui.ie)) {
			po = { top: 0, left: 0 };
		}

		return {
			top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
			left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
		};

	},

	_getRelativeOffset: function() {

		if(this.cssPosition === "relative") {
			var p = this.currentItem.position();
			return {
				top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
				left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
			};
		} else {
			return { top: 0, left: 0 };
		}

	},

	_cacheMargins: function() {
		this.margins = {
			left: (parseInt(this.currentItem.css("marginLeft"),10) || 0),
			top: (parseInt(this.currentItem.css("marginTop"),10) || 0)
		};
	},

	_cacheHelperProportions: function() {
		this.helperProportions = {
			width: this.helper.outerWidth(),
			height: this.helper.outerHeight()
		};
	},

	_setContainment: function() {

		var ce, co, over,
			o = this.options;
		if(o.containment === "parent") {
			o.containment = this.helper[0].parentNode;
		}
		if(o.containment === "document" || o.containment === "window") {
			this.containment = [
				0 - this.offset.relative.left - this.offset.parent.left,
				0 - this.offset.relative.top - this.offset.parent.top,
				$(o.containment === "document" ? document : window).width() - this.helperProportions.width - this.margins.left,
				($(o.containment === "document" ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
			];
		}

		if(!(/^(document|window|parent)$/).test(o.containment)) {
			ce = $(o.containment)[0];
			co = $(o.containment).offset();
			over = ($(ce).css("overflow") !== "hidden");

			this.containment = [
				co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
				co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
				co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - (parseInt($(ce).css("paddingRight"),10) || 0) - this.helperProportions.width - this.margins.left,
				co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - (parseInt($(ce).css("paddingBottom"),10) || 0) - this.helperProportions.height - this.margins.top
			];
		}

	},

	_convertPositionTo: function(d, pos) {

		if(!pos) {
			pos = this.position;
		}
		var mod = d === "absolute" ? 1 : -1,
			scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent,
			scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);

		return {
			top: (
				pos.top	+																// The absolute mouse position
				this.offset.relative.top * mod +										// Only for relative positioned nodes: Relative offset from element to offset parent
				this.offset.parent.top * mod -											// The offsetParent's offset without borders (offset + border)
				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
			),
			left: (
				pos.left +																// The absolute mouse position
				this.offset.relative.left * mod +										// Only for relative positioned nodes: Relative offset from element to offset parent
				this.offset.parent.left * mod	-										// The offsetParent's offset without borders (offset + border)
				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
			)
		};

	},

	_generatePosition: function(event) {

		var top, left,
			o = this.options,
			pageX = event.pageX,
			pageY = event.pageY,
			scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);

		// This is another very weird special case that only happens for relative elements:
		// 1. If the css position is relative
		// 2. and the scroll parent is the document or similar to the offset parent
		// we have to refresh the relative offset during the scroll so there are no jumps
		if(this.cssPosition === "relative" && !(this.scrollParent[0] !== document && this.scrollParent[0] !== this.offsetParent[0])) {
			this.offset.relative = this._getRelativeOffset();
		}

		/*
		 * - Position constraining -
		 * Constrain the position to a mix of grid, containment.
		 */

		if(this.originalPosition) { //If we are not dragging yet, we won't check for options

			if(this.containment) {
				if(event.pageX - this.offset.click.left < this.containment[0]) {
					pageX = this.containment[0] + this.offset.click.left;
				}
				if(event.pageY - this.offset.click.top < this.containment[1]) {
					pageY = this.containment[1] + this.offset.click.top;
				}
				if(event.pageX - this.offset.click.left > this.containment[2]) {
					pageX = this.containment[2] + this.offset.click.left;
				}
				if(event.pageY - this.offset.click.top > this.containment[3]) {
					pageY = this.containment[3] + this.offset.click.top;
				}
			}

			if(o.grid) {
				top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
				pageY = this.containment ? ( (top - this.offset.click.top >= this.containment[1] && top - this.offset.click.top <= this.containment[3]) ? top : ((top - this.offset.click.top >= this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;

				left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
				pageX = this.containment ? ( (left - this.offset.click.left >= this.containment[0] && left - this.offset.click.left <= this.containment[2]) ? left : ((left - this.offset.click.left >= this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
			}

		}

		return {
			top: (
				pageY -																// The absolute mouse position
				this.offset.click.top -													// Click offset (relative to the element)
				this.offset.relative.top	-											// Only for relative positioned nodes: Relative offset from element to offset parent
				this.offset.parent.top +												// The offsetParent's offset without borders (offset + border)
				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
			),
			left: (
				pageX -																// The absolute mouse position
				this.offset.click.left -												// Click offset (relative to the element)
				this.offset.relative.left	-											// Only for relative positioned nodes: Relative offset from element to offset parent
				this.offset.parent.left +												// The offsetParent's offset without borders (offset + border)
				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
			)
		};

	},

	_rearrange: function(event, i, a, hardRefresh) {

		a ? a[0].appendChild(this.placeholder[0]) : i.item[0].parentNode.insertBefore(this.placeholder[0], (this.direction === "down" ? i.item[0] : i.item[0].nextSibling));

		//Various things done here to improve the performance:
		// 1. we create a setTimeout, that calls refreshPositions
		// 2. on the instance, we have a counter variable, that get's higher after every append
		// 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
		// 4. this lets only the last addition to the timeout stack through
		this.counter = this.counter ? ++this.counter : 1;
		var counter = this.counter;

		this._delay(function() {
			if(counter === this.counter) {
				this.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
			}
		});

	},

	_clear: function(event, noPropagation) {

		this.reverting = false;
		// We delay all events that have to be triggered to after the point where the placeholder has been removed and
		// everything else normalized again
		var i,
			delayedTriggers = [];

		// We first have to update the dom position of the actual currentItem
		// Note: don't do it if the current item is already removed (by a user), or it gets reappended (see #4088)
		if(!this._noFinalSort && this.currentItem.parent().length) {
			this.placeholder.before(this.currentItem);
		}
		this._noFinalSort = null;

		if(this.helper[0] === this.currentItem[0]) {
			for(i in this._storedCSS) {
				if(this._storedCSS[i] === "auto" || this._storedCSS[i] === "static") {
					this._storedCSS[i] = "";
				}
			}
			this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
		} else {
			this.currentItem.show();
		}

		if(this.fromOutside && !noPropagation) {
			delayedTriggers.push(function(event) { this._trigger("receive", event, this._uiHash(this.fromOutside)); });
		}
		if((this.fromOutside || this.domPosition.prev !== this.currentItem.prev().not(".ui-sortable-helper")[0] || this.domPosition.parent !== this.currentItem.parent()[0]) && !noPropagation) {
			delayedTriggers.push(function(event) { this._trigger("update", event, this._uiHash()); }); //Trigger update callback if the DOM position has changed
		}

		// Check if the items Container has Changed and trigger appropriate
		// events.
		if (this !== this.currentContainer) {
			if(!noPropagation) {
				delayedTriggers.push(function(event) { this._trigger("remove", event, this._uiHash()); });
				delayedTriggers.push((function(c) { return function(event) { c._trigger("receive", event, this._uiHash(this)); };  }).call(this, this.currentContainer));
				delayedTriggers.push((function(c) { return function(event) { c._trigger("update", event, this._uiHash(this));  }; }).call(this, this.currentContainer));
			}
		}


		//Post events to containers
		for (i = this.containers.length - 1; i >= 0; i--){
			if(!noPropagation) {
				delayedTriggers.push((function(c) { return function(event) { c._trigger("deactivate", event, this._uiHash(this)); };  }).call(this, this.containers[i]));
			}
			if(this.containers[i].containerCache.over) {
				delayedTriggers.push((function(c) { return function(event) { c._trigger("out", event, this._uiHash(this)); };  }).call(this, this.containers[i]));
				this.containers[i].containerCache.over = 0;
			}
		}

		//Do what was originally in plugins
		if(this._storedCursor) {
			$("body").css("cursor", this._storedCursor);
		}
		if(this._storedOpacity) {
			this.helper.css("opacity", this._storedOpacity);
		}
		if(this._storedZIndex) {
			this.helper.css("zIndex", this._storedZIndex === "auto" ? "" : this._storedZIndex);
		}

		this.dragging = false;
		if(this.cancelHelperRemoval) {
			if(!noPropagation) {
				this._trigger("beforeStop", event, this._uiHash());
				for (i=0; i < delayedTriggers.length; i++) {
					delayedTriggers[i].call(this, event);
				} //Trigger all delayed events
				this._trigger("stop", event, this._uiHash());
			}

			this.fromOutside = false;
			return false;
		}

		if(!noPropagation) {
			this._trigger("beforeStop", event, this._uiHash());
		}

		//$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
		this.placeholder[0].parentNode.removeChild(this.placeholder[0]);

		if(this.helper[0] !== this.currentItem[0]) {
			this.helper.remove();
		}
		this.helper = null;

		if(!noPropagation) {
			for (i=0; i < delayedTriggers.length; i++) {
				delayedTriggers[i].call(this, event);
			} //Trigger all delayed events
			this._trigger("stop", event, this._uiHash());
		}

		this.fromOutside = false;
		return true;

	},

	_trigger: function() {
		if ($.Widget.prototype._trigger.apply(this, arguments) === false) {
			this.cancel();
		}
	},

	_uiHash: function(_inst) {
		var inst = _inst || this;
		return {
			helper: inst.helper,
			placeholder: inst.placeholder || $([]),
			position: inst.position,
			originalPosition: inst.originalPosition,
			offset: inst.positionAbs,
			item: inst.currentItem,
			sender: _inst ? _inst.element : null
		};
	}

});

})(jQuery);
(function( $, undefined ) {

var uid = 0,
	hideProps = {},
	showProps = {};

hideProps.height = hideProps.paddingTop = hideProps.paddingBottom =
	hideProps.borderTopWidth = hideProps.borderBottomWidth = "hide";
showProps.height = showProps.paddingTop = showProps.paddingBottom =
	showProps.borderTopWidth = showProps.borderBottomWidth = "show";

$.widget( "ui.accordion", {
	version: "1.10.1",
	options: {
		active: 0,
		animate: {},
		collapsible: false,
		event: "click",
		header: "> li > :first-child,> :not(li):even",
		heightStyle: "auto",
		icons: {
			activeHeader: "ui-icon-triangle-1-s",
			header: "ui-icon-triangle-1-e"
		},

		// callbacks
		activate: null,
		beforeActivate: null
	},

	_create: function() {
		var options = this.options;
		this.prevShow = this.prevHide = $();
		this.element.addClass( "ui-accordion ui-widget ui-helper-reset" )
			// ARIA
			.attr( "role", "tablist" );

		// don't allow collapsible: false and active: false / null
		if ( !options.collapsible && (options.active === false || options.active == null) ) {
			options.active = 0;
		}

		this._processPanels();
		// handle negative values
		if ( options.active < 0 ) {
			options.active += this.headers.length;
		}
		this._refresh();
	},

	_getCreateEventData: function() {
		return {
			header: this.active,
			panel: !this.active.length ? $() : this.active.next(),
			content: !this.active.length ? $() : this.active.next()
		};
	},

	_createIcons: function() {
		var icons = this.options.icons;
		if ( icons ) {
			$( "<span>" )
				.addClass( "ui-accordion-header-icon ui-icon " + icons.header )
				.prependTo( this.headers );
			this.active.children( ".ui-accordion-header-icon" )
				.removeClass( icons.header )
				.addClass( icons.activeHeader );
			this.headers.addClass( "ui-accordion-icons" );
		}
	},

	_destroyIcons: function() {
		this.headers
			.removeClass( "ui-accordion-icons" )
			.children( ".ui-accordion-header-icon" )
				.remove();
	},

	_destroy: function() {
		var contents;

		// clean up main element
		this.element
			.removeClass( "ui-accordion ui-widget ui-helper-reset" )
			.removeAttr( "role" );

		// clean up headers
		this.headers
			.removeClass( "ui-accordion-header ui-accordion-header-active ui-helper-reset ui-state-default ui-corner-all ui-state-active ui-state-disabled ui-corner-top" )
			.removeAttr( "role" )
			.removeAttr( "aria-selected" )
			.removeAttr( "aria-controls" )
			.removeAttr( "tabIndex" )
			.each(function() {
				if ( /^ui-accordion/.test( this.id ) ) {
					this.removeAttribute( "id" );
				}
			});
		this._destroyIcons();

		// clean up content panels
		contents = this.headers.next()
			.css( "display", "" )
			.removeAttr( "role" )
			.removeAttr( "aria-expanded" )
			.removeAttr( "aria-hidden" )
			.removeAttr( "aria-labelledby" )
			.removeClass( "ui-helper-reset ui-widget-content ui-corner-bottom ui-accordion-content ui-accordion-content-active ui-state-disabled" )
			.each(function() {
				if ( /^ui-accordion/.test( this.id ) ) {
					this.removeAttribute( "id" );
				}
			});
		if ( this.options.heightStyle !== "content" ) {
			contents.css( "height", "" );
		}
	},

	_setOption: function( key, value ) {
		if ( key === "active" ) {
			// _activate() will handle invalid values and update this.options
			this._activate( value );
			return;
		}

		if ( key === "event" ) {
			if ( this.options.event ) {
				this._off( this.headers, this.options.event );
			}
			this._setupEvents( value );
		}

		this._super( key, value );

		// setting collapsible: false while collapsed; open first panel
		if ( key === "collapsible" && !value && this.options.active === false ) {
			this._activate( 0 );
		}

		if ( key === "icons" ) {
			this._destroyIcons();
			if ( value ) {
				this._createIcons();
			}
		}

		// #5332 - opacity doesn't cascade to positioned elements in IE
		// so we need to add the disabled class to the headers and panels
		if ( key === "disabled" ) {
			this.headers.add( this.headers.next() )
				.toggleClass( "ui-state-disabled", !!value );
		}
	},

	_keydown: function( event ) {
		/*jshint maxcomplexity:15*/
		if ( event.altKey || event.ctrlKey ) {
			return;
		}

		var keyCode = $.ui.keyCode,
			length = this.headers.length,
			currentIndex = this.headers.index( event.target ),
			toFocus = false;

		switch ( event.keyCode ) {
			case keyCode.RIGHT:
			case keyCode.DOWN:
				toFocus = this.headers[ ( currentIndex + 1 ) % length ];
				break;
			case keyCode.LEFT:
			case keyCode.UP:
				toFocus = this.headers[ ( currentIndex - 1 + length ) % length ];
				break;
			case keyCode.SPACE:
			case keyCode.ENTER:
				this._eventHandler( event );
				break;
			case keyCode.HOME:
				toFocus = this.headers[ 0 ];
				break;
			case keyCode.END:
				toFocus = this.headers[ length - 1 ];
				break;
		}

		if ( toFocus ) {
			$( event.target ).attr( "tabIndex", -1 );
			$( toFocus ).attr( "tabIndex", 0 );
			toFocus.focus();
			event.preventDefault();
		}
	},

	_panelKeyDown : function( event ) {
		if ( event.keyCode === $.ui.keyCode.UP && event.ctrlKey ) {
			$( event.currentTarget ).prev().focus();
		}
	},

	refresh: function() {
		var options = this.options;
		this._processPanels();

		// was collapsed or no panel
		if ( ( options.active === false && options.collapsible === true ) || !this.headers.length ) {
			options.active = false;
			this.active = $();
		// active false only when collapsible is true
		} if ( options.active === false ) {
			this._activate( 0 );
		// was active, but active panel is gone
		} else if ( this.active.length && !$.contains( this.element[ 0 ], this.active[ 0 ] ) ) {
			// all remaining panel are disabled
			if ( this.headers.length === this.headers.find(".ui-state-disabled").length ) {
				options.active = false;
				this.active = $();
			// activate previous panel
			} else {
				this._activate( Math.max( 0, options.active - 1 ) );
			}
		// was active, active panel still exists
		} else {
			// make sure active index is correct
			options.active = this.headers.index( this.active );
		}

		this._destroyIcons();

		this._refresh();
	},

	_processPanels: function() {
		this.headers = this.element.find( this.options.header )
			.addClass( "ui-accordion-header ui-helper-reset ui-state-default ui-corner-all" );

		this.headers.next()
			.addClass( "ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom" )
			.filter(":not(.ui-accordion-content-active)")
			.hide();
	},

	_refresh: function() {
		var maxHeight,
			options = this.options,
			heightStyle = options.heightStyle,
			parent = this.element.parent(),
			accordionId = this.accordionId = "ui-accordion-" +
				(this.element.attr( "id" ) || ++uid);

		this.active = this._findActive( options.active )
			.addClass( "ui-accordion-header-active ui-state-active ui-corner-top" )
			.removeClass( "ui-corner-all" );
		this.active.next()
			.addClass( "ui-accordion-content-active" )
			.show();

		this.headers
			.attr( "role", "tab" )
			.each(function( i ) {
				var header = $( this ),
					headerId = header.attr( "id" ),
					panel = header.next(),
					panelId = panel.attr( "id" );
				if ( !headerId ) {
					headerId = accordionId + "-header-" + i;
					header.attr( "id", headerId );
				}
				if ( !panelId ) {
					panelId = accordionId + "-panel-" + i;
					panel.attr( "id", panelId );
				}
				header.attr( "aria-controls", panelId );
				panel.attr( "aria-labelledby", headerId );
			})
			.next()
				.attr( "role", "tabpanel" );

		this.headers
			.not( this.active )
			.attr({
				"aria-selected": "false",
				tabIndex: -1
			})
			.next()
				.attr({
					"aria-expanded": "false",
					"aria-hidden": "true"
				})
				.hide();

		// make sure at least one header is in the tab order
		if ( !this.active.length ) {
			this.headers.eq( 0 ).attr( "tabIndex", 0 );
		} else {
			this.active.attr({
				"aria-selected": "true",
				tabIndex: 0
			})
			.next()
				.attr({
					"aria-expanded": "true",
					"aria-hidden": "false"
				});
		}

		this._createIcons();

		this._setupEvents( options.event );

		if ( heightStyle === "fill" ) {
			maxHeight = parent.height();
			this.element.siblings( ":visible" ).each(function() {
				var elem = $( this ),
					position = elem.css( "position" );

				if ( position === "absolute" || position === "fixed" ) {
					return;
				}
				maxHeight -= elem.outerHeight( true );
			});

			this.headers.each(function() {
				maxHeight -= $( this ).outerHeight( true );
			});

			this.headers.next()
				.each(function() {
					$( this ).height( Math.max( 0, maxHeight -
						$( this ).innerHeight() + $( this ).height() ) );
				})
				.css( "overflow", "auto" );
		} else if ( heightStyle === "auto" ) {
			maxHeight = 0;
			this.headers.next()
				.each(function() {
					maxHeight = Math.max( maxHeight, $( this ).css( "height", "" ).height() );
				})
				.height( maxHeight );
		}
	},

	_activate: function( index ) {
		var active = this._findActive( index )[ 0 ];

		// trying to activate the already active panel
		if ( active === this.active[ 0 ] ) {
			return;
		}

		// trying to collapse, simulate a click on the currently active header
		active = active || this.active[ 0 ];

		this._eventHandler({
			target: active,
			currentTarget: active,
			preventDefault: $.noop
		});
	},

	_findActive: function( selector ) {
		return typeof selector === "number" ? this.headers.eq( selector ) : $();
	},

	_setupEvents: function( event ) {
		var events = {
			keydown: "_keydown"
		};
		if ( event ) {
			$.each( event.split(" "), function( index, eventName ) {
				events[ eventName ] = "_eventHandler";
			});
		}

		this._off( this.headers.add( this.headers.next() ) );
		this._on( this.headers, events );
		this._on( this.headers.next(), { keydown: "_panelKeyDown" });
		this._hoverable( this.headers );
		this._focusable( this.headers );
	},

	_eventHandler: function( event ) {
		var options = this.options,
			active = this.active,
			clicked = $( event.currentTarget ),
			clickedIsActive = clicked[ 0 ] === active[ 0 ],
			collapsing = clickedIsActive && options.collapsible,
			toShow = collapsing ? $() : clicked.next(),
			toHide = active.next(),
			eventData = {
				oldHeader: active,
				oldPanel: toHide,
				newHeader: collapsing ? $() : clicked,
				newPanel: toShow
			};

		event.preventDefault();

		if (
				// click on active header, but not collapsible
				( clickedIsActive && !options.collapsible ) ||
				// allow canceling activation
				( this._trigger( "beforeActivate", event, eventData ) === false ) ) {
			return;
		}

		options.active = collapsing ? false : this.headers.index( clicked );

		// when the call to ._toggle() comes after the class changes
		// it causes a very odd bug in IE 8 (see #6720)
		this.active = clickedIsActive ? $() : clicked;
		this._toggle( eventData );

		// switch classes
		// corner classes on the previously active header stay after the animation
		active.removeClass( "ui-accordion-header-active ui-state-active" );
		if ( options.icons ) {
			active.children( ".ui-accordion-header-icon" )
				.removeClass( options.icons.activeHeader )
				.addClass( options.icons.header );
		}

		if ( !clickedIsActive ) {
			clicked
				.removeClass( "ui-corner-all" )
				.addClass( "ui-accordion-header-active ui-state-active ui-corner-top" );
			if ( options.icons ) {
				clicked.children( ".ui-accordion-header-icon" )
					.removeClass( options.icons.header )
					.addClass( options.icons.activeHeader );
			}

			clicked
				.next()
				.addClass( "ui-accordion-content-active" );
		}
	},

	_toggle: function( data ) {
		var toShow = data.newPanel,
			toHide = this.prevShow.length ? this.prevShow : data.oldPanel;

		// handle activating a panel during the animation for another activation
		this.prevShow.add( this.prevHide ).stop( true, true );
		this.prevShow = toShow;
		this.prevHide = toHide;

		if ( this.options.animate ) {
			this._animate( toShow, toHide, data );
		} else {
			toHide.hide();
			toShow.show();
			this._toggleComplete( data );
		}

		toHide.attr({
			"aria-expanded": "false",
			"aria-hidden": "true"
		});
		toHide.prev().attr( "aria-selected", "false" );
		// if we're switching panels, remove the old header from the tab order
		// if we're opening from collapsed state, remove the previous header from the tab order
		// if we're collapsing, then keep the collapsing header in the tab order
		if ( toShow.length && toHide.length ) {
			toHide.prev().attr( "tabIndex", -1 );
		} else if ( toShow.length ) {
			this.headers.filter(function() {
				return $( this ).attr( "tabIndex" ) === 0;
			})
			.attr( "tabIndex", -1 );
		}

		toShow
			.attr({
				"aria-expanded": "true",
				"aria-hidden": "false"
			})
			.prev()
				.attr({
					"aria-selected": "true",
					tabIndex: 0
				});
	},

	_animate: function( toShow, toHide, data ) {
		var total, easing, duration,
			that = this,
			adjust = 0,
			down = toShow.length &&
				( !toHide.length || ( toShow.index() < toHide.index() ) ),
			animate = this.options.animate || {},
			options = down && animate.down || animate,
			complete = function() {
				that._toggleComplete( data );
			};

		if ( typeof options === "number" ) {
			duration = options;
		}
		if ( typeof options === "string" ) {
			easing = options;
		}
		// fall back from options to animation in case of partial down settings
		easing = easing || options.easing || animate.easing;
		duration = duration || options.duration || animate.duration;

		if ( !toHide.length ) {
			return toShow.animate( showProps, duration, easing, complete );
		}
		if ( !toShow.length ) {
			return toHide.animate( hideProps, duration, easing, complete );
		}

		total = toShow.show().outerHeight();
		toHide.animate( hideProps, {
			duration: duration,
			easing: easing,
			step: function( now, fx ) {
				fx.now = Math.round( now );
			}
		});
		toShow
			.hide()
			.animate( showProps, {
				duration: duration,
				easing: easing,
				complete: complete,
				step: function( now, fx ) {
					fx.now = Math.round( now );
					if ( fx.prop !== "height" ) {
						adjust += fx.now;
					} else if ( that.options.heightStyle !== "content" ) {
						fx.now = Math.round( total - toHide.outerHeight() - adjust );
						adjust = 0;
					}
				}
			});
	},

	_toggleComplete: function( data ) {
		var toHide = data.oldPanel;

		toHide
			.removeClass( "ui-accordion-content-active" )
			.prev()
				.removeClass( "ui-corner-top" )
				.addClass( "ui-corner-all" );

		// Work around for rendering bug in IE (#5421)
		if ( toHide.length ) {
			toHide.parent()[0].className = toHide.parent()[0].className;
		}

		this._trigger( "activate", null, data );
	}
});

})( jQuery );
(function( $, undefined ) {

// used to prevent race conditions with remote data sources
var requestIndex = 0;

$.widget( "ui.autocomplete", {
	version: "1.10.1",
	defaultElement: "<input>",
	options: {
		appendTo: null,
		autoFocus: false,
		delay: 300,
		minLength: 1,
		position: {
			my: "left top",
			at: "left bottom",
			collision: "none"
		},
		source: null,

		// callbacks
		change: null,
		close: null,
		focus: null,
		open: null,
		response: null,
		search: null,
		select: null
	},

	pending: 0,

	_create: function() {
		// Some browsers only repeat keydown events, not keypress events,
		// so we use the suppressKeyPress flag to determine if we've already
		// handled the keydown event. #7269
		// Unfortunately the code for & in keypress is the same as the up arrow,
		// so we use the suppressKeyPressRepeat flag to avoid handling keypress
		// events when we know the keydown event was used to modify the
		// search term. #7799
		var suppressKeyPress, suppressKeyPressRepeat, suppressInput,
			nodeName = this.element[0].nodeName.toLowerCase(),
			isTextarea = nodeName === "textarea",
			isInput = nodeName === "input";

		this.isMultiLine =
			// Textareas are always multi-line
			isTextarea ? true :
			// Inputs are always single-line, even if inside a contentEditable element
			// IE also treats inputs as contentEditable
			isInput ? false :
			// All other element types are determined by whether or not they're contentEditable
			this.element.prop( "isContentEditable" );

		this.valueMethod = this.element[ isTextarea || isInput ? "val" : "text" ];
		this.isNewMenu = true;

		this.element
			.addClass( "ui-autocomplete-input" )
			.attr( "autocomplete", "off" );

		this._on( this.element, {
			keydown: function( event ) {
				/*jshint maxcomplexity:15*/
				if ( this.element.prop( "readOnly" ) ) {
					suppressKeyPress = true;
					suppressInput = true;
					suppressKeyPressRepeat = true;
					return;
				}

				suppressKeyPress = false;
				suppressInput = false;
				suppressKeyPressRepeat = false;
				var keyCode = $.ui.keyCode;
				switch( event.keyCode ) {
				case keyCode.PAGE_UP:
					suppressKeyPress = true;
					this._move( "previousPage", event );
					break;
				case keyCode.PAGE_DOWN:
					suppressKeyPress = true;
					this._move( "nextPage", event );
					break;
				case keyCode.UP:
					suppressKeyPress = true;
					this._keyEvent( "previous", event );
					break;
				case keyCode.DOWN:
					suppressKeyPress = true;
					this._keyEvent( "next", event );
					break;
				case keyCode.ENTER:
				case keyCode.NUMPAD_ENTER:
					// when menu is open and has focus
					if ( this.menu.active ) {
						// #6055 - Opera still allows the keypress to occur
						// which causes forms to submit
						suppressKeyPress = true;
						event.preventDefault();
						this.menu.select( event );
					}
					break;
				case keyCode.TAB:
					if ( this.menu.active ) {
						this.menu.select( event );
					}
					break;
				case keyCode.ESCAPE:
					if ( this.menu.element.is( ":visible" ) ) {
						this._value( this.term );
						this.close( event );
						// Different browsers have different default behavior for escape
						// Single press can mean undo or clear
						// Double press in IE means clear the whole form
						event.preventDefault();
					}
					break;
				default:
					suppressKeyPressRepeat = true;
					// search timeout should be triggered before the input value is changed
					this._searchTimeout( event );
					break;
				}
			},
			keypress: function( event ) {
				if ( suppressKeyPress ) {
					suppressKeyPress = false;
					event.preventDefault();
					return;
				}
				if ( suppressKeyPressRepeat ) {
					return;
				}

				// replicate some key handlers to allow them to repeat in Firefox and Opera
				var keyCode = $.ui.keyCode;
				switch( event.keyCode ) {
				case keyCode.PAGE_UP:
					this._move( "previousPage", event );
					break;
				case keyCode.PAGE_DOWN:
					this._move( "nextPage", event );
					break;
				case keyCode.UP:
					this._keyEvent( "previous", event );
					break;
				case keyCode.DOWN:
					this._keyEvent( "next", event );
					break;
				}
			},
			input: function( event ) {
				if ( suppressInput ) {
					suppressInput = false;
					event.preventDefault();
					return;
				}
				this._searchTimeout( event );
			},
			focus: function() {
				this.selectedItem = null;
				this.previous = this._value();
			},
			blur: function( event ) {
				if ( this.cancelBlur ) {
					delete this.cancelBlur;
					return;
				}

				clearTimeout( this.searching );
				this.close( event );
				this._change( event );
			}
		});

		this._initSource();
		this.menu = $( "<ul>" )
			.addClass( "ui-autocomplete ui-front" )
			.appendTo( this._appendTo() )
			.menu({
				// custom key handling for now
				input: $(),
				// disable ARIA support, the live region takes care of that
				role: null
			})
			.hide()
			.data( "ui-menu" );

		this._on( this.menu.element, {
			mousedown: function( event ) {
				// prevent moving focus out of the text field
				event.preventDefault();

				// IE doesn't prevent moving focus even with event.preventDefault()
				// so we set a flag to know when we should ignore the blur event
				this.cancelBlur = true;
				this._delay(function() {
					delete this.cancelBlur;
				});

				// clicking on the scrollbar causes focus to shift to the body
				// but we can't detect a mouseup or a click immediately afterward
				// so we have to track the next mousedown and close the menu if
				// the user clicks somewhere outside of the autocomplete
				var menuElement = this.menu.element[ 0 ];
				if ( !$( event.target ).closest( ".ui-menu-item" ).length ) {
					this._delay(function() {
						var that = this;
						this.document.one( "mousedown", function( event ) {
							if ( event.target !== that.element[ 0 ] &&
									event.target !== menuElement &&
									!$.contains( menuElement, event.target ) ) {
								that.close();
							}
						});
					});
				}
			},
			menufocus: function( event, ui ) {
				// #7024 - Prevent accidental activation of menu items in Firefox
				if ( this.isNewMenu ) {
					this.isNewMenu = false;
					if ( event.originalEvent && /^mouse/.test( event.originalEvent.type ) ) {
						this.menu.blur();

						this.document.one( "mousemove", function() {
							$( event.target ).trigger( event.originalEvent );
						});

						return;
					}
				}

				var item = ui.item.data( "ui-autocomplete-item" );
				if ( false !== this._trigger( "focus", event, { item: item } ) ) {
					// use value to match what will end up in the input, if it was a key event
					if ( event.originalEvent && /^key/.test( event.originalEvent.type ) ) {
						this._value( item.value );
					}
				} else {
					// Normally the input is populated with the item's value as the
					// menu is navigated, causing screen readers to notice a change and
					// announce the item. Since the focus event was canceled, this doesn't
					// happen, so we update the live region so that screen readers can
					// still notice the change and announce it.
					this.liveRegion.text( item.value );
				}
			},
			menuselect: function( event, ui ) {
				var item = ui.item.data( "ui-autocomplete-item" ),
					previous = this.previous;

				// only trigger when focus was lost (click on menu)
				if ( this.element[0] !== this.document[0].activeElement ) {
					this.element.focus();
					this.previous = previous;
					// #6109 - IE triggers two focus events and the second
					// is asynchronous, so we need to reset the previous
					// term synchronously and asynchronously :-(
					this._delay(function() {
						this.previous = previous;
						this.selectedItem = item;
					});
				}

				if ( false !== this._trigger( "select", event, { item: item } ) ) {
					this._value( item.value );
				}
				// reset the term after the select event
				// this allows custom select handling to work properly
				this.term = this._value();

				this.close( event );
				this.selectedItem = item;
			}
		});

		this.liveRegion = $( "<span>", {
				role: "status",
				"aria-live": "polite"
			})
			.addClass( "ui-helper-hidden-accessible" )
			.insertAfter( this.element );

		// turning off autocomplete prevents the browser from remembering the
		// value when navigating through history, so we re-enable autocomplete
		// if the page is unloaded before the widget is destroyed. #7790
		this._on( this.window, {
			beforeunload: function() {
				this.element.removeAttr( "autocomplete" );
			}
		});
	},

	_destroy: function() {
		clearTimeout( this.searching );
		this.element
			.removeClass( "ui-autocomplete-input" )
			.removeAttr( "autocomplete" );
		this.menu.element.remove();
		this.liveRegion.remove();
	},

	_setOption: function( key, value ) {
		this._super( key, value );
		if ( key === "source" ) {
			this._initSource();
		}
		if ( key === "appendTo" ) {
			this.menu.element.appendTo( this._appendTo() );
		}
		if ( key === "disabled" && value && this.xhr ) {
			this.xhr.abort();
		}
	},

	_appendTo: function() {
		var element = this.options.appendTo;

		if ( element ) {
			element = element.jquery || element.nodeType ?
				$( element ) :
				this.document.find( element ).eq( 0 );
		}

		if ( !element ) {
			element = this.element.closest( ".ui-front" );
		}

		if ( !element.length ) {
			element = this.document[0].body;
		}

		return element;
	},

	_initSource: function() {
		var array, url,
			that = this;
		if ( $.isArray(this.options.source) ) {
			array = this.options.source;
			this.source = function( request, response ) {
				response( $.ui.autocomplete.filter( array, request.term ) );
			};
		} else if ( typeof this.options.source === "string" ) {
			url = this.options.source;
			this.source = function( request, response ) {
				if ( that.xhr ) {
					that.xhr.abort();
				}
				that.xhr = $.ajax({
					url: url,
					data: request,
					dataType: "json",
					success: function( data ) {
						response( data );
					},
					error: function() {
						response( [] );
					}
				});
			};
		} else {
			this.source = this.options.source;
		}
	},

	_searchTimeout: function( event ) {
		clearTimeout( this.searching );
		this.searching = this._delay(function() {
			// only search if the value has changed
			if ( this.term !== this._value() ) {
				this.selectedItem = null;
				this.search( null, event );
			}
		}, this.options.delay );
	},

	search: function( value, event ) {
		value = value != null ? value : this._value();

		// always save the actual value, not the one passed as an argument
		this.term = this._value();

		if ( value.length < this.options.minLength ) {
			return this.close( event );
		}

		if ( this._trigger( "search", event ) === false ) {
			return;
		}

		return this._search( value );
	},

	_search: function( value ) {
		this.pending++;
		this.element.addClass( "ui-autocomplete-loading" );
		this.cancelSearch = false;

		this.source( { term: value }, this._response() );
	},

	_response: function() {
		var that = this,
			index = ++requestIndex;

		return function( content ) {
			if ( index === requestIndex ) {
				that.__response( content );
			}

			that.pending--;
			if ( !that.pending ) {
				that.element.removeClass( "ui-autocomplete-loading" );
			}
		};
	},

	__response: function( content ) {
		if ( content ) {
			content = this._normalize( content );
		}
		this._trigger( "response", null, { content: content } );
		if ( !this.options.disabled && content && content.length && !this.cancelSearch ) {
			this._suggest( content );
			this._trigger( "open" );
		} else {
			// use ._close() instead of .close() so we don't cancel future searches
			this._close();
		}
	},

	close: function( event ) {
		this.cancelSearch = true;
		this._close( event );
	},

	_close: function( event ) {
		if ( this.menu.element.is( ":visible" ) ) {
			this.menu.element.hide();
			this.menu.blur();
			this.isNewMenu = true;
			this._trigger( "close", event );
		}
	},

	_change: function( event ) {
		if ( this.previous !== this._value() ) {
			this._trigger( "change", event, { item: this.selectedItem } );
		}
	},

	_normalize: function( items ) {
		// assume all items have the right format when the first item is complete
		if ( items.length && items[0].label && items[0].value ) {
			return items;
		}
		return $.map( items, function( item ) {
			if ( typeof item === "string" ) {
				return {
					label: item,
					value: item
				};
			}
			return $.extend({
				label: item.label || item.value,
				value: item.value || item.label
			}, item );
		});
	},

	_suggest: function( items ) {
		var ul = this.menu.element.empty();
		this._renderMenu( ul, items );
		this.menu.refresh();

		// size and position menu
		ul.show();
		this._resizeMenu();
		ul.position( $.extend({
			of: this.element
		}, this.options.position ));

		if ( this.options.autoFocus ) {
			this.menu.next();
		}
	},

	_resizeMenu: function() {
		var ul = this.menu.element;
		ul.outerWidth( Math.max(
			// Firefox wraps long text (possibly a rounding bug)
			// so we add 1px to avoid the wrapping (#7513)
			ul.width( "" ).outerWidth() + 1,
			this.element.outerWidth()
		) );
	},

	_renderMenu: function( ul, items ) {
		var that = this;
		$.each( items, function( index, item ) {
			that._renderItemData( ul, item );
		});
	},

	_renderItemData: function( ul, item ) {
		return this._renderItem( ul, item ).data( "ui-autocomplete-item", item );
	},

	_renderItem: function( ul, item ) {
		return $( "<li>" )
			.append( $( "<a>" ).text( item.label ) )
			.appendTo( ul );
	},

	_move: function( direction, event ) {
		if ( !this.menu.element.is( ":visible" ) ) {
			this.search( null, event );
			return;
		}
		if ( this.menu.isFirstItem() && /^previous/.test( direction ) ||
				this.menu.isLastItem() && /^next/.test( direction ) ) {
			this._value( this.term );
			this.menu.blur();
			return;
		}
		this.menu[ direction ]( event );
	},

	widget: function() {
		return this.menu.element;
	},

	_value: function() {
		return this.valueMethod.apply( this.element, arguments );
	},

	_keyEvent: function( keyEvent, event ) {
		if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
			this._move( keyEvent, event );

			// prevents moving cursor to beginning/end of the text field in some browsers
			event.preventDefault();
		}
	}
});

$.extend( $.ui.autocomplete, {
	escapeRegex: function( value ) {
		return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
	},
	filter: function(array, term) {
		var matcher = new RegExp( $.ui.autocomplete.escapeRegex(term), "i" );
		return $.grep( array, function(value) {
			return matcher.test( value.label || value.value || value );
		});
	}
});


// live region extension, adding a `messages` option
// NOTE: This is an experimental API. We are still investigating
// a full solution for string manipulation and internationalization.
$.widget( "ui.autocomplete", $.ui.autocomplete, {
	options: {
		messages: {
			noResults: "No search results.",
			results: function( amount ) {
				return amount + ( amount > 1 ? " results are" : " result is" ) +
					" available, use up and down arrow keys to navigate.";
			}
		}
	},

	__response: function( content ) {
		var message;
		this._superApply( arguments );
		if ( this.options.disabled || this.cancelSearch ) {
			return;
		}
		if ( content && content.length ) {
			message = this.options.messages.results( content.length );
		} else {
			message = this.options.messages.noResults;
		}
		this.liveRegion.text( message );
	}
});

}( jQuery ));
(function( $, undefined ) {

var lastActive, startXPos, startYPos, clickDragged,
	baseClasses = "ui-button ui-widget ui-state-default ui-corner-all",
	stateClasses = "ui-state-hover ui-state-active ",
	typeClasses = "ui-button-icons-only ui-button-icon-only ui-button-text-icons ui-button-text-icon-primary ui-button-text-icon-secondary ui-button-text-only",
	formResetHandler = function() {
		var buttons = $( this ).find( ":ui-button" );
		setTimeout(function() {
			buttons.button( "refresh" );
		}, 1 );
	},
	radioGroup = function( radio ) {
		var name = radio.name,
			form = radio.form,
			radios = $( [] );
		if ( name ) {
			name = name.replace( /'/g, "\\'" );
			if ( form ) {
				radios = $( form ).find( "[name='" + name + "']" );
			} else {
				radios = $( "[name='" + name + "']", radio.ownerDocument )
					.filter(function() {
						return !this.form;
					});
			}
		}
		return radios;
	};

$.widget( "ui.button", {
	version: "1.10.1",
	defaultElement: "<button>",
	options: {
		disabled: null,
		text: true,
		label: null,
		icons: {
			primary: null,
			secondary: null
		}
	},
	_create: function() {
		this.element.closest( "form" )
			.unbind( "reset" + this.eventNamespace )
			.bind( "reset" + this.eventNamespace, formResetHandler );

		if ( typeof this.options.disabled !== "boolean" ) {
			this.options.disabled = !!this.element.prop( "disabled" );
		} else {
			this.element.prop( "disabled", this.options.disabled );
		}

		this._determineButtonType();
		this.hasTitle = !!this.buttonElement.attr( "title" );

		var that = this,
			options = this.options,
			toggleButton = this.type === "checkbox" || this.type === "radio",
			activeClass = !toggleButton ? "ui-state-active" : "",
			focusClass = "ui-state-focus";

		if ( options.label === null ) {
			options.label = (this.type === "input" ? this.buttonElement.val() : this.buttonElement.html());
		}

		this._hoverable( this.buttonElement );

		this.buttonElement
			.addClass( baseClasses )
			.attr( "role", "button" )
			.bind( "mouseenter" + this.eventNamespace, function() {
				if ( options.disabled ) {
					return;
				}
				if ( this === lastActive ) {
					$( this ).addClass( "ui-state-active" );
				}
			})
			.bind( "mouseleave" + this.eventNamespace, function() {
				if ( options.disabled ) {
					return;
				}
				$( this ).removeClass( activeClass );
			})
			.bind( "click" + this.eventNamespace, function( event ) {
				if ( options.disabled ) {
					event.preventDefault();
					event.stopImmediatePropagation();
				}
			});

		this.element
			.bind( "focus" + this.eventNamespace, function() {
				// no need to check disabled, focus won't be triggered anyway
				that.buttonElement.addClass( focusClass );
			})
			.bind( "blur" + this.eventNamespace, function() {
				that.buttonElement.removeClass( focusClass );
			});

		if ( toggleButton ) {
			this.element.bind( "change" + this.eventNamespace, function() {
				if ( clickDragged ) {
					return;
				}
				that.refresh();
			});
			// if mouse moves between mousedown and mouseup (drag) set clickDragged flag
			// prevents issue where button state changes but checkbox/radio checked state
			// does not in Firefox (see ticket #6970)
			this.buttonElement
				.bind( "mousedown" + this.eventNamespace, function( event ) {
					if ( options.disabled ) {
						return;
					}
					clickDragged = false;
					startXPos = event.pageX;
					startYPos = event.pageY;
				})
				.bind( "mouseup" + this.eventNamespace, function( event ) {
					if ( options.disabled ) {
						return;
					}
					if ( startXPos !== event.pageX || startYPos !== event.pageY ) {
						clickDragged = true;
					}
			});
		}

		if ( this.type === "checkbox" ) {
			this.buttonElement.bind( "click" + this.eventNamespace, function() {
				if ( options.disabled || clickDragged ) {
					return false;
				}
			});
		} else if ( this.type === "radio" ) {
			this.buttonElement.bind( "click" + this.eventNamespace, function() {
				if ( options.disabled || clickDragged ) {
					return false;
				}
				$( this ).addClass( "ui-state-active" );
				that.buttonElement.attr( "aria-pressed", "true" );

				var radio = that.element[ 0 ];
				radioGroup( radio )
					.not( radio )
					.map(function() {
						return $( this ).button( "widget" )[ 0 ];
					})
					.removeClass( "ui-state-active" )
					.attr( "aria-pressed", "false" );
			});
		} else {
			this.buttonElement
				.bind( "mousedown" + this.eventNamespace, function() {
					if ( options.disabled ) {
						return false;
					}
					$( this ).addClass( "ui-state-active" );
					lastActive = this;
					that.document.one( "mouseup", function() {
						lastActive = null;
					});
				})
				.bind( "mouseup" + this.eventNamespace, function() {
					if ( options.disabled ) {
						return false;
					}
					$( this ).removeClass( "ui-state-active" );
				})
				.bind( "keydown" + this.eventNamespace, function(event) {
					if ( options.disabled ) {
						return false;
					}
					if ( event.keyCode === $.ui.keyCode.SPACE || event.keyCode === $.ui.keyCode.ENTER ) {
						$( this ).addClass( "ui-state-active" );
					}
				})
				// see #8559, we bind to blur here in case the button element loses
				// focus between keydown and keyup, it would be left in an "active" state
				.bind( "keyup" + this.eventNamespace + " blur" + this.eventNamespace, function() {
					$( this ).removeClass( "ui-state-active" );
				});

			if ( this.buttonElement.is("a") ) {
				this.buttonElement.keyup(function(event) {
					if ( event.keyCode === $.ui.keyCode.SPACE ) {
						// TODO pass through original event correctly (just as 2nd argument doesn't work)
						$( this ).click();
					}
				});
			}
		}

		// TODO: pull out $.Widget's handling for the disabled option into
		// $.Widget.prototype._setOptionDisabled so it's easy to proxy and can
		// be overridden by individual plugins
		this._setOption( "disabled", options.disabled );
		this._resetButton();
	},

	_determineButtonType: function() {
		var ancestor, labelSelector, checked;

		if ( this.element.is("[type=checkbox]") ) {
			this.type = "checkbox";
		} else if ( this.element.is("[type=radio]") ) {
			this.type = "radio";
		} else if ( this.element.is("input") ) {
			this.type = "input";
		} else {
			this.type = "button";
		}

		if ( this.type === "checkbox" || this.type === "radio" ) {
			// we don't search against the document in case the element
			// is disconnected from the DOM
			ancestor = this.element.parents().last();
			labelSelector = "label[for='" + this.element.attr("id") + "']";
			this.buttonElement = ancestor.find( labelSelector );
			if ( !this.buttonElement.length ) {
				ancestor = ancestor.length ? ancestor.siblings() : this.element.siblings();
				this.buttonElement = ancestor.filter( labelSelector );
				if ( !this.buttonElement.length ) {
					this.buttonElement = ancestor.find( labelSelector );
				}
			}
			this.element.addClass( "ui-helper-hidden-accessible" );

			checked = this.element.is( ":checked" );
			if ( checked ) {
				this.buttonElement.addClass( "ui-state-active" );
			}
			this.buttonElement.prop( "aria-pressed", checked );
		} else {
			this.buttonElement = this.element;
		}
	},

	widget: function() {
		return this.buttonElement;
	},

	_destroy: function() {
		this.element
			.removeClass( "ui-helper-hidden-accessible" );
		this.buttonElement
			.removeClass( baseClasses + " " + stateClasses + " " + typeClasses )
			.removeAttr( "role" )
			.removeAttr( "aria-pressed" )
			.html( this.buttonElement.find(".ui-button-text").html() );

		if ( !this.hasTitle ) {
			this.buttonElement.removeAttr( "title" );
		}
	},

	_setOption: function( key, value ) {
		this._super( key, value );
		if ( key === "disabled" ) {
			if ( value ) {
				this.element.prop( "disabled", true );
			} else {
				this.element.prop( "disabled", false );
			}
			return;
		}
		this._resetButton();
	},

	refresh: function() {
		//See #8237 & #8828
		var isDisabled = this.element.is( "input, button" ) ? this.element.is( ":disabled" ) : this.element.hasClass( "ui-button-disabled" );

		if ( isDisabled !== this.options.disabled ) {
			this._setOption( "disabled", isDisabled );
		}
		if ( this.type === "radio" ) {
			radioGroup( this.element[0] ).each(function() {
				if ( $( this ).is( ":checked" ) ) {
					$( this ).button( "widget" )
						.addClass( "ui-state-active" )
						.attr( "aria-pressed", "true" );
				} else {
					$( this ).button( "widget" )
						.removeClass( "ui-state-active" )
						.attr( "aria-pressed", "false" );
				}
			});
		} else if ( this.type === "checkbox" ) {
			if ( this.element.is( ":checked" ) ) {
				this.buttonElement
					.addClass( "ui-state-active" )
					.attr( "aria-pressed", "true" );
			} else {
				this.buttonElement
					.removeClass( "ui-state-active" )
					.attr( "aria-pressed", "false" );
			}
		}
	},

	_resetButton: function() {
		if ( this.type === "input" ) {
			if ( this.options.label ) {
				this.element.val( this.options.label );
			}
			return;
		}
		var buttonElement = this.buttonElement.removeClass( typeClasses ),
			buttonText = $( "<span></span>", this.document[0] )
				.addClass( "ui-button-text" )
				.html( this.options.label )
				.appendTo( buttonElement.empty() )
				.text(),
			icons = this.options.icons,
			multipleIcons = icons.primary && icons.secondary,
			buttonClasses = [];

		if ( icons.primary || icons.secondary ) {
			if ( this.options.text ) {
				buttonClasses.push( "ui-button-text-icon" + ( multipleIcons ? "s" : ( icons.primary ? "-primary" : "-secondary" ) ) );
			}

			if ( icons.primary ) {
				buttonElement.prepend( "<span class='ui-button-icon-primary ui-icon " + icons.primary + "'></span>" );
			}

			if ( icons.secondary ) {
				buttonElement.append( "<span class='ui-button-icon-secondary ui-icon " + icons.secondary + "'></span>" );
			}

			if ( !this.options.text ) {
				buttonClasses.push( multipleIcons ? "ui-button-icons-only" : "ui-button-icon-only" );

				if ( !this.hasTitle ) {
					buttonElement.attr( "title", $.trim( buttonText ) );
				}
			}
		} else {
			buttonClasses.push( "ui-button-text-only" );
		}
		buttonElement.addClass( buttonClasses.join( " " ) );
	}
});

$.widget( "ui.buttonset", {
	version: "1.10.1",
	options: {
		items: "button, input[type=button], input[type=submit], input[type=reset], input[type=checkbox], input[type=radio], a, :data(ui-button)"
	},

	_create: function() {
		this.element.addClass( "ui-buttonset" );
	},

	_init: function() {
		this.refresh();
	},

	_setOption: function( key, value ) {
		if ( key === "disabled" ) {
			this.buttons.button( "option", key, value );
		}

		this._super( key, value );
	},

	refresh: function() {
		var rtl = this.element.css( "direction" ) === "rtl";

		this.buttons = this.element.find( this.options.items )
			.filter( ":ui-button" )
				.button( "refresh" )
			.end()
			.not( ":ui-button" )
				.button()
			.end()
			.map(function() {
				return $( this ).button( "widget" )[ 0 ];
			})
				.removeClass( "ui-corner-all ui-corner-left ui-corner-right" )
				.filter( ":first" )
					.addClass( rtl ? "ui-corner-right" : "ui-corner-left" )
				.end()
				.filter( ":last" )
					.addClass( rtl ? "ui-corner-left" : "ui-corner-right" )
				.end()
			.end();
	},

	_destroy: function() {
		this.element.removeClass( "ui-buttonset" );
		this.buttons
			.map(function() {
				return $( this ).button( "widget" )[ 0 ];
			})
				.removeClass( "ui-corner-left ui-corner-right" )
			.end()
			.button( "destroy" );
	}
});

}( jQuery ) );
(function( $, undefined ) {

$.extend($.ui, { datepicker: { version: "1.10.1" } });

var PROP_NAME = "datepicker",
	dpuuid = new Date().getTime(),
	instActive;

/* Date picker manager.
   Use the singleton instance of this class, $.datepicker, to interact with the date picker.
   Settings for (groups of) date pickers are maintained in an instance object,
   allowing multiple different settings on the same page. */

function Datepicker() {
	this._curInst = null; // The current instance in use
	this._keyEvent = false; // If the last event was a key event
	this._disabledInputs = []; // List of date picker inputs that have been disabled
	this._datepickerShowing = false; // True if the popup picker is showing , false if not
	this._inDialog = false; // True if showing within a "dialog", false if not
	this._mainDivId = "ui-datepicker-div"; // The ID of the main datepicker division
	this._inlineClass = "ui-datepicker-inline"; // The name of the inline marker class
	this._appendClass = "ui-datepicker-append"; // The name of the append marker class
	this._triggerClass = "ui-datepicker-trigger"; // The name of the trigger marker class
	this._dialogClass = "ui-datepicker-dialog"; // The name of the dialog marker class
	this._disableClass = "ui-datepicker-disabled"; // The name of the disabled covering marker class
	this._unselectableClass = "ui-datepicker-unselectable"; // The name of the unselectable cell marker class
	this._currentClass = "ui-datepicker-current-day"; // The name of the current day marker class
	this._dayOverClass = "ui-datepicker-days-cell-over"; // The name of the day hover marker class
	this.regional = []; // Available regional settings, indexed by language code
	this.regional[""] = { // Default regional settings
		closeText: "Done", // Display text for close link
		prevText: "Prev", // Display text for previous month link
		nextText: "Next", // Display text for next month link
		currentText: "Today", // Display text for current month link
		monthNames: ["January","February","March","April","May","June",
			"July","August","September","October","November","December"], // Names of months for drop-down and formatting
		monthNamesShort: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"], // For formatting
		dayNames: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"], // For formatting
		dayNamesShort: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"], // For formatting
		dayNamesMin: ["Su","Mo","Tu","We","Th","Fr","Sa"], // Column headings for days starting at Sunday
		weekHeader: "Wk", // Column header for week of the year
		dateFormat: "mm/dd/yy", // See format options on parseDate
		firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
		isRTL: false, // True if right-to-left language, false if left-to-right
		showMonthAfterYear: false, // True if the year select precedes month, false for month then year
		yearSuffix: "" // Additional text to append to the year in the month headers
	};
	this._defaults = { // Global defaults for all the date picker instances
		showOn: "focus", // "focus" for popup on focus,
			// "button" for trigger button, or "both" for either
		showAnim: "fadeIn", // Name of jQuery animation for popup
		showOptions: {}, // Options for enhanced animations
		defaultDate: null, // Used when field is blank: actual date,
			// +/-number for offset from today, null for today
		appendText: "", // Display text following the input box, e.g. showing the format
		buttonText: "...", // Text for trigger button
		buttonImage: "", // URL for trigger button image
		buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
		hideIfNoPrevNext: false, // True to hide next/previous month links
			// if not applicable, false to just disable them
		navigationAsDateFormat: false, // True if date formatting applied to prev/today/next links
		gotoCurrent: false, // True if today link goes back to current selection instead
		changeMonth: false, // True if month can be selected directly, false if only prev/next
		changeYear: false, // True if year can be selected directly, false if only prev/next
		yearRange: "c-10:c+10", // Range of years to display in drop-down,
			// either relative to today's year (-nn:+nn), relative to currently displayed year
			// (c-nn:c+nn), absolute (nnnn:nnnn), or a combination of the above (nnnn:-n)
		showOtherMonths: false, // True to show dates in other months, false to leave blank
		selectOtherMonths: false, // True to allow selection of dates in other months, false for unselectable
		showWeek: false, // True to show week of the year, false to not show it
		calculateWeek: this.iso8601Week, // How to calculate the week of the year,
			// takes a Date and returns the number of the week for it
		shortYearCutoff: "+10", // Short year values < this are in the current century,
			// > this are in the previous century,
			// string value starting with "+" for current year + value
		minDate: null, // The earliest selectable date, or null for no limit
		maxDate: null, // The latest selectable date, or null for no limit
		duration: "fast", // Duration of display/closure
		beforeShowDay: null, // Function that takes a date and returns an array with
			// [0] = true if selectable, false if not, [1] = custom CSS class name(s) or "",
			// [2] = cell title (optional), e.g. $.datepicker.noWeekends
		beforeShow: null, // Function that takes an input field and
			// returns a set of custom settings for the date picker
		onSelect: null, // Define a callback function when a date is selected
		onChangeMonthYear: null, // Define a callback function when the month or year is changed
		onClose: null, // Define a callback function when the datepicker is closed
		numberOfMonths: 1, // Number of months to show at a time
		showCurrentAtPos: 0, // The position in multipe months at which to show the current month (starting at 0)
		stepMonths: 1, // Number of months to step back/forward
		stepBigMonths: 12, // Number of months to step back/forward for the big links
		altField: "", // Selector for an alternate field to store selected dates into
		altFormat: "", // The date format to use for the alternate field
		constrainInput: true, // The input is constrained by the current date format
		showButtonPanel: false, // True to show button panel, false to not show it
		autoSize: false, // True to size the input for the date format, false to leave as is
		disabled: false // The initial disabled state
	};
	$.extend(this._defaults, this.regional[""]);
	this.dpDiv = bindHover($("<div id='" + this._mainDivId + "' class='ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all'></div>"));
}

$.extend(Datepicker.prototype, {
	/* Class name added to elements to indicate already configured with a date picker. */
	markerClassName: "hasDatepicker",

	//Keep track of the maximum number of rows displayed (see #7043)
	maxRows: 4,

	// TODO rename to "widget" when switching to widget factory
	_widgetDatepicker: function() {
		return this.dpDiv;
	},

	/* Override the default settings for all instances of the date picker.
	 * @param  settings  object - the new settings to use as defaults (anonymous object)
	 * @return the manager object
	 */
	setDefaults: function(settings) {
		extendRemove(this._defaults, settings || {});
		return this;
	},

	/* Attach the date picker to a jQuery selection.
	 * @param  target	element - the target input field or division or span
	 * @param  settings  object - the new settings to use for this date picker instance (anonymous)
	 */
	_attachDatepicker: function(target, settings) {
		var nodeName, inline, inst;
		nodeName = target.nodeName.toLowerCase();
		inline = (nodeName === "div" || nodeName === "span");
		if (!target.id) {
			this.uuid += 1;
			target.id = "dp" + this.uuid;
		}
		inst = this._newInst($(target), inline);
		inst.settings = $.extend({}, settings || {});
		if (nodeName === "input") {
			this._connectDatepicker(target, inst);
		} else if (inline) {
			this._inlineDatepicker(target, inst);
		}
	},

	/* Create a new instance object. */
	_newInst: function(target, inline) {
		var id = target[0].id.replace(/([^A-Za-z0-9_\-])/g, "\\\\$1"); // escape jQuery meta chars
		return {id: id, input: target, // associated target
			selectedDay: 0, selectedMonth: 0, selectedYear: 0, // current selection
			drawMonth: 0, drawYear: 0, // month being drawn
			inline: inline, // is datepicker inline or not
			dpDiv: (!inline ? this.dpDiv : // presentation div
			bindHover($("<div class='" + this._inlineClass + " ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all'></div>")))};
	},

	/* Attach the date picker to an input field. */
	_connectDatepicker: function(target, inst) {
		var input = $(target);
		inst.append = $([]);
		inst.trigger = $([]);
		if (input.hasClass(this.markerClassName)) {
			return;
		}
		this._attachments(input, inst);
		input.addClass(this.markerClassName).keydown(this._doKeyDown).
			keypress(this._doKeyPress).keyup(this._doKeyUp);
		this._autoSize(inst);
		$.data(target, PROP_NAME, inst);
		//If disabled option is true, disable the datepicker once it has been attached to the input (see ticket #5665)
		if( inst.settings.disabled ) {
			this._disableDatepicker( target );
		}
	},

	/* Make attachments based on settings. */
	_attachments: function(input, inst) {
		var showOn, buttonText, buttonImage,
			appendText = this._get(inst, "appendText"),
			isRTL = this._get(inst, "isRTL");

		if (inst.append) {
			inst.append.remove();
		}
		if (appendText) {
			inst.append = $("<span class='" + this._appendClass + "'>" + appendText + "</span>");
			input[isRTL ? "before" : "after"](inst.append);
		}

		input.unbind("focus", this._showDatepicker);

		if (inst.trigger) {
			inst.trigger.remove();
		}

		showOn = this._get(inst, "showOn");
		if (showOn === "focus" || showOn === "both") { // pop-up date picker when in the marked field
			input.focus(this._showDatepicker);
		}
		if (showOn === "button" || showOn === "both") { // pop-up date picker when button clicked
			buttonText = this._get(inst, "buttonText");
			buttonImage = this._get(inst, "buttonImage");
			inst.trigger = $(this._get(inst, "buttonImageOnly") ?
				$("<img/>").addClass(this._triggerClass).
					attr({ src: buttonImage, alt: buttonText, title: buttonText }) :
				$("<button type='button'></button>").addClass(this._triggerClass).
					html(!buttonImage ? buttonText : $("<img/>").attr(
					{ src:buttonImage, alt:buttonText, title:buttonText })));
			input[isRTL ? "before" : "after"](inst.trigger);
			inst.trigger.click(function() {
				if ($.datepicker._datepickerShowing && $.datepicker._lastInput === input[0]) {
					$.datepicker._hideDatepicker();
				} else if ($.datepicker._datepickerShowing && $.datepicker._lastInput !== input[0]) {
					$.datepicker._hideDatepicker();
					$.datepicker._showDatepicker(input[0]);
				} else {
					$.datepicker._showDatepicker(input[0]);
				}
				return false;
			});
		}
	},

	/* Apply the maximum length for the date format. */
	_autoSize: function(inst) {
		if (this._get(inst, "autoSize") && !inst.inline) {
			var findMax, max, maxI, i,
				date = new Date(2009, 12 - 1, 20), // Ensure double digits
				dateFormat = this._get(inst, "dateFormat");

			if (dateFormat.match(/[DM]/)) {
				findMax = function(names) {
					max = 0;
					maxI = 0;
					for (i = 0; i < names.length; i++) {
						if (names[i].length > max) {
							max = names[i].length;
							maxI = i;
						}
					}
					return maxI;
				};
				date.setMonth(findMax(this._get(inst, (dateFormat.match(/MM/) ?
					"monthNames" : "monthNamesShort"))));
				date.setDate(findMax(this._get(inst, (dateFormat.match(/DD/) ?
					"dayNames" : "dayNamesShort"))) + 20 - date.getDay());
			}
			inst.input.attr("size", this._formatDate(inst, date).length);
		}
	},

	/* Attach an inline date picker to a div. */
	_inlineDatepicker: function(target, inst) {
		var divSpan = $(target);
		if (divSpan.hasClass(this.markerClassName)) {
			return;
		}
		divSpan.addClass(this.markerClassName).append(inst.dpDiv);
		$.data(target, PROP_NAME, inst);
		this._setDate(inst, this._getDefaultDate(inst), true);
		this._updateDatepicker(inst);
		this._updateAlternate(inst);
		//If disabled option is true, disable the datepicker before showing it (see ticket #5665)
		if( inst.settings.disabled ) {
			this._disableDatepicker( target );
		}
		// Set display:block in place of inst.dpDiv.show() which won't work on disconnected elements
		// http://bugs.jqueryui.com/ticket/7552 - A Datepicker created on a detached div has zero height
		inst.dpDiv.css( "display", "block" );
	},

	/* Pop-up the date picker in a "dialog" box.
	 * @param  input element - ignored
	 * @param  date	string or Date - the initial date to display
	 * @param  onSelect  function - the function to call when a date is selected
	 * @param  settings  object - update the dialog date picker instance's settings (anonymous object)
	 * @param  pos int[2] - coordinates for the dialog's position within the screen or
	 *					event - with x/y coordinates or
	 *					leave empty for default (screen centre)
	 * @return the manager object
	 */
	_dialogDatepicker: function(input, date, onSelect, settings, pos) {
		var id, browserWidth, browserHeight, scrollX, scrollY,
			inst = this._dialogInst; // internal instance

		if (!inst) {
			this.uuid += 1;
			id = "dp" + this.uuid;
			this._dialogInput = $("<input type='text' id='" + id +
				"' style='position: absolute; top: -100px; width: 0px;'/>");
			this._dialogInput.keydown(this._doKeyDown);
			$("body").append(this._dialogInput);
			inst = this._dialogInst = this._newInst(this._dialogInput, false);
			inst.settings = {};
			$.data(this._dialogInput[0], PROP_NAME, inst);
		}
		extendRemove(inst.settings, settings || {});
		date = (date && date.constructor === Date ? this._formatDate(inst, date) : date);
		this._dialogInput.val(date);

		this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
		if (!this._pos) {
			browserWidth = document.documentElement.clientWidth;
			browserHeight = document.documentElement.clientHeight;
			scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
			scrollY = document.documentElement.scrollTop || document.body.scrollTop;
			this._pos = // should use actual width/height below
				[(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
		}

		// move input on screen for focus, but hidden behind dialog
		this._dialogInput.css("left", (this._pos[0] + 20) + "px").css("top", this._pos[1] + "px");
		inst.settings.onSelect = onSelect;
		this._inDialog = true;
		this.dpDiv.addClass(this._dialogClass);
		this._showDatepicker(this._dialogInput[0]);
		if ($.blockUI) {
			$.blockUI(this.dpDiv);
		}
		$.data(this._dialogInput[0], PROP_NAME, inst);
		return this;
	},

	/* Detach a datepicker from its control.
	 * @param  target	element - the target input field or division or span
	 */
	_destroyDatepicker: function(target) {
		var nodeName,
			$target = $(target),
			inst = $.data(target, PROP_NAME);

		if (!$target.hasClass(this.markerClassName)) {
			return;
		}

		nodeName = target.nodeName.toLowerCase();
		$.removeData(target, PROP_NAME);
		if (nodeName === "input") {
			inst.append.remove();
			inst.trigger.remove();
			$target.removeClass(this.markerClassName).
				unbind("focus", this._showDatepicker).
				unbind("keydown", this._doKeyDown).
				unbind("keypress", this._doKeyPress).
				unbind("keyup", this._doKeyUp);
		} else if (nodeName === "div" || nodeName === "span") {
			$target.removeClass(this.markerClassName).empty();
		}
	},

	/* Enable the date picker to a jQuery selection.
	 * @param  target	element - the target input field or division or span
	 */
	_enableDatepicker: function(target) {
		var nodeName, inline,
			$target = $(target),
			inst = $.data(target, PROP_NAME);

		if (!$target.hasClass(this.markerClassName)) {
			return;
		}

		nodeName = target.nodeName.toLowerCase();
		if (nodeName === "input") {
			target.disabled = false;
			inst.trigger.filter("button").
				each(function() { this.disabled = false; }).end().
				filter("img").css({opacity: "1.0", cursor: ""});
		} else if (nodeName === "div" || nodeName === "span") {
			inline = $target.children("." + this._inlineClass);
			inline.children().removeClass("ui-state-disabled");
			inline.find("select.ui-datepicker-month, select.ui-datepicker-year").
				prop("disabled", false);
		}
		this._disabledInputs = $.map(this._disabledInputs,
			function(value) { return (value === target ? null : value); }); // delete entry
	},

	/* Disable the date picker to a jQuery selection.
	 * @param  target	element - the target input field or division or span
	 */
	_disableDatepicker: function(target) {
		var nodeName, inline,
			$target = $(target),
			inst = $.data(target, PROP_NAME);

		if (!$target.hasClass(this.markerClassName)) {
			return;
		}

		nodeName = target.nodeName.toLowerCase();
		if (nodeName === "input") {
			target.disabled = true;
			inst.trigger.filter("button").
				each(function() { this.disabled = true; }).end().
				filter("img").css({opacity: "0.5", cursor: "default"});
		} else if (nodeName === "div" || nodeName === "span") {
			inline = $target.children("." + this._inlineClass);
			inline.children().addClass("ui-state-disabled");
			inline.find("select.ui-datepicker-month, select.ui-datepicker-year").
				prop("disabled", true);
		}
		this._disabledInputs = $.map(this._disabledInputs,
			function(value) { return (value === target ? null : value); }); // delete entry
		this._disabledInputs[this._disabledInputs.length] = target;
	},

	/* Is the first field in a jQuery collection disabled as a datepicker?
	 * @param  target	element - the target input field or division or span
	 * @return boolean - true if disabled, false if enabled
	 */
	_isDisabledDatepicker: function(target) {
		if (!target) {
			return false;
		}
		for (var i = 0; i < this._disabledInputs.length; i++) {
			if (this._disabledInputs[i] === target) {
				return true;
			}
		}
		return false;
	},

	/* Retrieve the instance data for the target control.
	 * @param  target  element - the target input field or division or span
	 * @return  object - the associated instance data
	 * @throws  error if a jQuery problem getting data
	 */
	_getInst: function(target) {
		try {
			return $.data(target, PROP_NAME);
		}
		catch (err) {
			throw "Missing instance data for this datepicker";
		}
	},

	/* Update or retrieve the settings for a date picker attached to an input field or division.
	 * @param  target  element - the target input field or division or span
	 * @param  name	object - the new settings to update or
	 *				string - the name of the setting to change or retrieve,
	 *				when retrieving also "all" for all instance settings or
	 *				"defaults" for all global defaults
	 * @param  value   any - the new value for the setting
	 *				(omit if above is an object or to retrieve a value)
	 */
	_optionDatepicker: function(target, name, value) {
		var settings, date, minDate, maxDate,
			inst = this._getInst(target);

		if (arguments.length === 2 && typeof name === "string") {
			return (name === "defaults" ? $.extend({}, $.datepicker._defaults) :
				(inst ? (name === "all" ? $.extend({}, inst.settings) :
				this._get(inst, name)) : null));
		}

		settings = name || {};
		if (typeof name === "string") {
			settings = {};
			settings[name] = value;
		}

		if (inst) {
			if (this._curInst === inst) {
				this._hideDatepicker();
			}

			date = this._getDateDatepicker(target, true);
			minDate = this._getMinMaxDate(inst, "min");
			maxDate = this._getMinMaxDate(inst, "max");
			extendRemove(inst.settings, settings);
			// reformat the old minDate/maxDate values if dateFormat changes and a new minDate/maxDate isn't provided
			if (minDate !== null && settings.dateFormat !== undefined && settings.minDate === undefined) {
				inst.settings.minDate = this._formatDate(inst, minDate);
			}
			if (maxDate !== null && settings.dateFormat !== undefined && settings.maxDate === undefined) {
				inst.settings.maxDate = this._formatDate(inst, maxDate);
			}
			if ( "disabled" in settings ) {
				if ( settings.disabled ) {
					this._disableDatepicker(target);
				} else {
					this._enableDatepicker(target);
				}
			}
			this._attachments($(target), inst);
			this._autoSize(inst);
			this._setDate(inst, date);
			this._updateAlternate(inst);
			this._updateDatepicker(inst);
		}
	},

	// change method deprecated
	_changeDatepicker: function(target, name, value) {
		this._optionDatepicker(target, name, value);
	},

	/* Redraw the date picker attached to an input field or division.
	 * @param  target  element - the target input field or division or span
	 */
	_refreshDatepicker: function(target) {
		var inst = this._getInst(target);
		if (inst) {
			this._updateDatepicker(inst);
		}
	},

	/* Set the dates for a jQuery selection.
	 * @param  target element - the target input field or division or span
	 * @param  date	Date - the new date
	 */
	_setDateDatepicker: function(target, date) {
		var inst = this._getInst(target);
		if (inst) {
			this._setDate(inst, date);
			this._updateDatepicker(inst);
			this._updateAlternate(inst);
		}
	},

	/* Get the date(s) for the first entry in a jQuery selection.
	 * @param  target element - the target input field or division or span
	 * @param  noDefault boolean - true if no default date is to be used
	 * @return Date - the current date
	 */
	_getDateDatepicker: function(target, noDefault) {
		var inst = this._getInst(target);
		if (inst && !inst.inline) {
			this._setDateFromField(inst, noDefault);
		}
		return (inst ? this._getDate(inst) : null);
	},

	/* Handle keystrokes. */
	_doKeyDown: function(event) {
		var onSelect, dateStr, sel,
			inst = $.datepicker._getInst(event.target),
			handled = true,
			isRTL = inst.dpDiv.is(".ui-datepicker-rtl");

		inst._keyEvent = true;
		if ($.datepicker._datepickerShowing) {
			switch (event.keyCode) {
				case 9: $.datepicker._hideDatepicker();
						handled = false;
						break; // hide on tab out
				case 13: sel = $("td." + $.datepicker._dayOverClass + ":not(." +
									$.datepicker._currentClass + ")", inst.dpDiv);
						if (sel[0]) {
							$.datepicker._selectDay(event.target, inst.selectedMonth, inst.selectedYear, sel[0]);
						}

						onSelect = $.datepicker._get(inst, "onSelect");
						if (onSelect) {
							dateStr = $.datepicker._formatDate(inst);

							// trigger custom callback
							onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);
						} else {
							$.datepicker._hideDatepicker();
						}

						return false; // don't submit the form
				case 27: $.datepicker._hideDatepicker();
						break; // hide on escape
				case 33: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
							-$.datepicker._get(inst, "stepBigMonths") :
							-$.datepicker._get(inst, "stepMonths")), "M");
						break; // previous month/year on page up/+ ctrl
				case 34: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
							+$.datepicker._get(inst, "stepBigMonths") :
							+$.datepicker._get(inst, "stepMonths")), "M");
						break; // next month/year on page down/+ ctrl
				case 35: if (event.ctrlKey || event.metaKey) {
							$.datepicker._clearDate(event.target);
						}
						handled = event.ctrlKey || event.metaKey;
						break; // clear on ctrl or command +end
				case 36: if (event.ctrlKey || event.metaKey) {
							$.datepicker._gotoToday(event.target);
						}
						handled = event.ctrlKey || event.metaKey;
						break; // current on ctrl or command +home
				case 37: if (event.ctrlKey || event.metaKey) {
							$.datepicker._adjustDate(event.target, (isRTL ? +1 : -1), "D");
						}
						handled = event.ctrlKey || event.metaKey;
						// -1 day on ctrl or command +left
						if (event.originalEvent.altKey) {
							$.datepicker._adjustDate(event.target, (event.ctrlKey ?
								-$.datepicker._get(inst, "stepBigMonths") :
								-$.datepicker._get(inst, "stepMonths")), "M");
						}
						// next month/year on alt +left on Mac
						break;
				case 38: if (event.ctrlKey || event.metaKey) {
							$.datepicker._adjustDate(event.target, -7, "D");
						}
						handled = event.ctrlKey || event.metaKey;
						break; // -1 week on ctrl or command +up
				case 39: if (event.ctrlKey || event.metaKey) {
							$.datepicker._adjustDate(event.target, (isRTL ? -1 : +1), "D");
						}
						handled = event.ctrlKey || event.metaKey;
						// +1 day on ctrl or command +right
						if (event.originalEvent.altKey) {
							$.datepicker._adjustDate(event.target, (event.ctrlKey ?
								+$.datepicker._get(inst, "stepBigMonths") :
								+$.datepicker._get(inst, "stepMonths")), "M");
						}
						// next month/year on alt +right
						break;
				case 40: if (event.ctrlKey || event.metaKey) {
							$.datepicker._adjustDate(event.target, +7, "D");
						}
						handled = event.ctrlKey || event.metaKey;
						break; // +1 week on ctrl or command +down
				default: handled = false;
			}
		} else if (event.keyCode === 36 && event.ctrlKey) { // display the date picker on ctrl+home
			$.datepicker._showDatepicker(this);
		} else {
			handled = false;
		}

		if (handled) {
			event.preventDefault();
			event.stopPropagation();
		}
	},

	/* Filter entered characters - based on date format. */
	_doKeyPress: function(event) {
		var chars, chr,
			inst = $.datepicker._getInst(event.target);

		if ($.datepicker._get(inst, "constrainInput")) {
			chars = $.datepicker._possibleChars($.datepicker._get(inst, "dateFormat"));
			chr = String.fromCharCode(event.charCode == null ? event.keyCode : event.charCode);
			return event.ctrlKey || event.metaKey || (chr < " " || !chars || chars.indexOf(chr) > -1);
		}
	},

	/* Synchronise manual entry and field/alternate field. */
	_doKeyUp: function(event) {
		var date,
			inst = $.datepicker._getInst(event.target);

		if (inst.input.val() !== inst.lastVal) {
			try {
				date = $.datepicker.parseDate($.datepicker._get(inst, "dateFormat"),
					(inst.input ? inst.input.val() : null),
					$.datepicker._getFormatConfig(inst));

				if (date) { // only if valid
					$.datepicker._setDateFromField(inst);
					$.datepicker._updateAlternate(inst);
					$.datepicker._updateDatepicker(inst);
				}
			}
			catch (err) {
			}
		}
		return true;
	},

	/* Pop-up the date picker for a given input field.
	 * If false returned from beforeShow event handler do not show.
	 * @param  input  element - the input field attached to the date picker or
	 *					event - if triggered by focus
	 */
	_showDatepicker: function(input) {
		input = input.target || input;
		if (input.nodeName.toLowerCase() !== "input") { // find from button/image trigger
			input = $("input", input.parentNode)[0];
		}

		if ($.datepicker._isDisabledDatepicker(input) || $.datepicker._lastInput === input) { // already here
			return;
		}

		var inst, beforeShow, beforeShowSettings, isFixed,
			offset, showAnim, duration;

		inst = $.datepicker._getInst(input);
		if ($.datepicker._curInst && $.datepicker._curInst !== inst) {
			$.datepicker._curInst.dpDiv.stop(true, true);
			if ( inst && $.datepicker._datepickerShowing ) {
				$.datepicker._hideDatepicker( $.datepicker._curInst.input[0] );
			}
		}

		beforeShow = $.datepicker._get(inst, "beforeShow");
		beforeShowSettings = beforeShow ? beforeShow.apply(input, [input, inst]) : {};
		if(beforeShowSettings === false){
			return;
		}
		extendRemove(inst.settings, beforeShowSettings);

		inst.lastVal = null;
		$.datepicker._lastInput = input;
		$.datepicker._setDateFromField(inst);

		if ($.datepicker._inDialog) { // hide cursor
			input.value = "";
		}
		if (!$.datepicker._pos) { // position below input
			$.datepicker._pos = $.datepicker._findPos(input);
			$.datepicker._pos[1] += input.offsetHeight; // add the height
		}

		isFixed = false;
		$(input).parents().each(function() {
			isFixed |= $(this).css("position") === "fixed";
			return !isFixed;
		});

		offset = {left: $.datepicker._pos[0], top: $.datepicker._pos[1]};
		$.datepicker._pos = null;
		//to avoid flashes on Firefox
		inst.dpDiv.empty();
		// determine sizing offscreen
		inst.dpDiv.css({position: "absolute", display: "block", top: "-1000px"});
		$.datepicker._updateDatepicker(inst);
		// fix width for dynamic number of date pickers
		// and adjust position before showing
		offset = $.datepicker._checkOffset(inst, offset, isFixed);
		inst.dpDiv.css({position: ($.datepicker._inDialog && $.blockUI ?
			"static" : (isFixed ? "fixed" : "absolute")), display: "none",
			left: offset.left + "px", top: offset.top + "px"});

		if (!inst.inline) {
			showAnim = $.datepicker._get(inst, "showAnim");
			duration = $.datepicker._get(inst, "duration");
			inst.dpDiv.zIndex($(input).zIndex()+1);
			$.datepicker._datepickerShowing = true;

			if ( $.effects && $.effects.effect[ showAnim ] ) {
				inst.dpDiv.show(showAnim, $.datepicker._get(inst, "showOptions"), duration);
			} else {
				inst.dpDiv[showAnim || "show"](showAnim ? duration : null);
			}

			if (inst.input.is(":visible") && !inst.input.is(":disabled")) {
				inst.input.focus();
			}
			$.datepicker._curInst = inst;
		}
	},

	/* Generate the date picker content. */
	_updateDatepicker: function(inst) {
		this.maxRows = 4; //Reset the max number of rows being displayed (see #7043)
		instActive = inst; // for delegate hover events
		inst.dpDiv.empty().append(this._generateHTML(inst));
		this._attachHandlers(inst);
		inst.dpDiv.find("." + this._dayOverClass + " a").mouseover();

		var origyearshtml,
			numMonths = this._getNumberOfMonths(inst),
			cols = numMonths[1],
			width = 17;

		inst.dpDiv.removeClass("ui-datepicker-multi-2 ui-datepicker-multi-3 ui-datepicker-multi-4").width("");
		if (cols > 1) {
			inst.dpDiv.addClass("ui-datepicker-multi-" + cols).css("width", (width * cols) + "em");
		}
		inst.dpDiv[(numMonths[0] !== 1 || numMonths[1] !== 1 ? "add" : "remove") +
			"Class"]("ui-datepicker-multi");
		inst.dpDiv[(this._get(inst, "isRTL") ? "add" : "remove") +
			"Class"]("ui-datepicker-rtl");

		// #6694 - don't focus the input if it's already focused
		// this breaks the change event in IE
		if (inst === $.datepicker._curInst && $.datepicker._datepickerShowing && inst.input &&
			inst.input.is(":visible") && !inst.input.is(":disabled") && inst.input[0] !== document.activeElement) {
			inst.input.focus();
		}

		// deffered render of the years select (to avoid flashes on Firefox)
		if( inst.yearshtml ){
			origyearshtml = inst.yearshtml;
			setTimeout(function(){
				//assure that inst.yearshtml didn't change.
				if( origyearshtml === inst.yearshtml && inst.yearshtml ){
					inst.dpDiv.find("select.ui-datepicker-year:first").replaceWith(inst.yearshtml);
				}
				origyearshtml = inst.yearshtml = null;
			}, 0);
		}
	},

	/* Retrieve the size of left and top borders for an element.
	 * @param  elem  (jQuery object) the element of interest
	 * @return  (number[2]) the left and top borders
	 */
	_getBorders: function(elem) {
		var convert = function(value) {
			return {thin: 1, medium: 2, thick: 3}[value] || value;
		};
		return [parseFloat(convert(elem.css("border-left-width"))),
			parseFloat(convert(elem.css("border-top-width")))];
	},

	/* Check positioning to remain on screen. */
	_checkOffset: function(inst, offset, isFixed) {
		var dpWidth = inst.dpDiv.outerWidth(),
			dpHeight = inst.dpDiv.outerHeight(),
			inputWidth = inst.input ? inst.input.outerWidth() : 0,
			inputHeight = inst.input ? inst.input.outerHeight() : 0,
			viewWidth = document.documentElement.clientWidth + (isFixed ? 0 : $(document).scrollLeft()),
			viewHeight = document.documentElement.clientHeight + (isFixed ? 0 : $(document).scrollTop());

		offset.left -= (this._get(inst, "isRTL") ? (dpWidth - inputWidth) : 0);
		offset.left -= (isFixed && offset.left === inst.input.offset().left) ? $(document).scrollLeft() : 0;
		offset.top -= (isFixed && offset.top === (inst.input.offset().top + inputHeight)) ? $(document).scrollTop() : 0;

		// now check if datepicker is showing outside window viewport - move to a better place if so.
		offset.left -= Math.min(offset.left, (offset.left + dpWidth > viewWidth && viewWidth > dpWidth) ?
			Math.abs(offset.left + dpWidth - viewWidth) : 0);
		offset.top -= Math.min(offset.top, (offset.top + dpHeight > viewHeight && viewHeight > dpHeight) ?
			Math.abs(dpHeight + inputHeight) : 0);

		return offset;
	},

	/* Find an object's position on the screen. */
	_findPos: function(obj) {
		var position,
			inst = this._getInst(obj),
			isRTL = this._get(inst, "isRTL");

		while (obj && (obj.type === "hidden" || obj.nodeType !== 1 || $.expr.filters.hidden(obj))) {
			obj = obj[isRTL ? "previousSibling" : "nextSibling"];
		}

		position = $(obj).offset();
		return [position.left, position.top];
	},

	/* Hide the date picker from view.
	 * @param  input  element - the input field attached to the date picker
	 */
	_hideDatepicker: function(input) {
		var showAnim, duration, postProcess, onClose,
			inst = this._curInst;

		if (!inst || (input && inst !== $.data(input, PROP_NAME))) {
			return;
		}

		if (this._datepickerShowing) {
			showAnim = this._get(inst, "showAnim");
			duration = this._get(inst, "duration");
			postProcess = function() {
				$.datepicker._tidyDialog(inst);
			};

			// DEPRECATED: after BC for 1.8.x $.effects[ showAnim ] is not needed
			if ( $.effects && ( $.effects.effect[ showAnim ] || $.effects[ showAnim ] ) ) {
				inst.dpDiv.hide(showAnim, $.datepicker._get(inst, "showOptions"), duration, postProcess);
			} else {
				inst.dpDiv[(showAnim === "slideDown" ? "slideUp" :
					(showAnim === "fadeIn" ? "fadeOut" : "hide"))]((showAnim ? duration : null), postProcess);
			}

			if (!showAnim) {
				postProcess();
			}
			this._datepickerShowing = false;

			onClose = this._get(inst, "onClose");
			if (onClose) {
				onClose.apply((inst.input ? inst.input[0] : null), [(inst.input ? inst.input.val() : ""), inst]);
			}

			this._lastInput = null;
			if (this._inDialog) {
				this._dialogInput.css({ position: "absolute", left: "0", top: "-100px" });
				if ($.blockUI) {
					$.unblockUI();
					$("body").append(this.dpDiv);
				}
			}
			this._inDialog = false;
		}
	},

	/* Tidy up after a dialog display. */
	_tidyDialog: function(inst) {
		inst.dpDiv.removeClass(this._dialogClass).unbind(".ui-datepicker-calendar");
	},

	/* Close date picker if clicked elsewhere. */
	_checkExternalClick: function(event) {
		if (!$.datepicker._curInst) {
			return;
		}

		var $target = $(event.target),
			inst = $.datepicker._getInst($target[0]);

		if ( ( ( $target[0].id !== $.datepicker._mainDivId &&
				$target.parents("#" + $.datepicker._mainDivId).length === 0 &&
				!$target.hasClass($.datepicker.markerClassName) &&
				!$target.closest("." + $.datepicker._triggerClass).length &&
				$.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI) ) ) ||
			( $target.hasClass($.datepicker.markerClassName) && $.datepicker._curInst !== inst ) ) {
				$.datepicker._hideDatepicker();
		}
	},

	/* Adjust one of the date sub-fields. */
	_adjustDate: function(id, offset, period) {
		var target = $(id),
			inst = this._getInst(target[0]);

		if (this._isDisabledDatepicker(target[0])) {
			return;
		}
		this._adjustInstDate(inst, offset +
			(period === "M" ? this._get(inst, "showCurrentAtPos") : 0), // undo positioning
			period);
		this._updateDatepicker(inst);
	},

	/* Action for current link. */
	_gotoToday: function(id) {
		var date,
			target = $(id),
			inst = this._getInst(target[0]);

		if (this._get(inst, "gotoCurrent") && inst.currentDay) {
			inst.selectedDay = inst.currentDay;
			inst.drawMonth = inst.selectedMonth = inst.currentMonth;
			inst.drawYear = inst.selectedYear = inst.currentYear;
		} else {
			date = new Date();
			inst.selectedDay = date.getDate();
			inst.drawMonth = inst.selectedMonth = date.getMonth();
			inst.drawYear = inst.selectedYear = date.getFullYear();
		}
		this._notifyChange(inst);
		this._adjustDate(target);
	},

	/* Action for selecting a new month/year. */
	_selectMonthYear: function(id, select, period) {
		var target = $(id),
			inst = this._getInst(target[0]);

		inst["selected" + (period === "M" ? "Month" : "Year")] =
		inst["draw" + (period === "M" ? "Month" : "Year")] =
			parseInt(select.options[select.selectedIndex].value,10);

		this._notifyChange(inst);
		this._adjustDate(target);
	},

	/* Action for selecting a day. */
	_selectDay: function(id, month, year, td) {
		var inst,
			target = $(id);

		if ($(td).hasClass(this._unselectableClass) || this._isDisabledDatepicker(target[0])) {
			return;
		}

		inst = this._getInst(target[0]);
		inst.selectedDay = inst.currentDay = $("a", td).html();
		inst.selectedMonth = inst.currentMonth = month;
		inst.selectedYear = inst.currentYear = year;
		this._selectDate(id, this._formatDate(inst,
			inst.currentDay, inst.currentMonth, inst.currentYear));
	},

	/* Erase the input field and hide the date picker. */
	_clearDate: function(id) {
		var target = $(id);
		this._selectDate(target, "");
	},

	/* Update the input field with the selected date. */
	_selectDate: function(id, dateStr) {
		var onSelect,
			target = $(id),
			inst = this._getInst(target[0]);

		dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
		if (inst.input) {
			inst.input.val(dateStr);
		}
		this._updateAlternate(inst);

		onSelect = this._get(inst, "onSelect");
		if (onSelect) {
			onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);  // trigger custom callback
		} else if (inst.input) {
			inst.input.trigger("change"); // fire the change event
		}

		if (inst.inline){
			this._updateDatepicker(inst);
		} else {
			this._hideDatepicker();
			this._lastInput = inst.input[0];
			if (typeof(inst.input[0]) !== "object") {
				inst.input.focus(); // restore focus
			}
			this._lastInput = null;
		}
	},

	/* Update any alternate field to synchronise with the main field. */
	_updateAlternate: function(inst) {
		var altFormat, date, dateStr,
			altField = this._get(inst, "altField");

		if (altField) { // update alternate field too
			altFormat = this._get(inst, "altFormat") || this._get(inst, "dateFormat");
			date = this._getDate(inst);
			dateStr = this.formatDate(altFormat, date, this._getFormatConfig(inst));
			$(altField).each(function() { $(this).val(dateStr); });
		}
	},

	/* Set as beforeShowDay function to prevent selection of weekends.
	 * @param  date  Date - the date to customise
	 * @return [boolean, string] - is this date selectable?, what is its CSS class?
	 */
	noWeekends: function(date) {
		var day = date.getDay();
		return [(day > 0 && day < 6), ""];
	},

	/* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
	 * @param  date  Date - the date to get the week for
	 * @return  number - the number of the week within the year that contains this date
	 */
	iso8601Week: function(date) {
		var time,
			checkDate = new Date(date.getTime());

		// Find Thursday of this week starting on Monday
		checkDate.setDate(checkDate.getDate() + 4 - (checkDate.getDay() || 7));

		time = checkDate.getTime();
		checkDate.setMonth(0); // Compare with Jan 1
		checkDate.setDate(1);
		return Math.floor(Math.round((time - checkDate) / 86400000) / 7) + 1;
	},

	/* Parse a string value into a date object.
	 * See formatDate below for the possible formats.
	 *
	 * @param  format string - the expected format of the date
	 * @param  value string - the date in the above format
	 * @param  settings Object - attributes include:
	 *					shortYearCutoff  number - the cutoff year for determining the century (optional)
	 *					dayNamesShort	string[7] - abbreviated names of the days from Sunday (optional)
	 *					dayNames		string[7] - names of the days from Sunday (optional)
	 *					monthNamesShort string[12] - abbreviated names of the months (optional)
	 *					monthNames		string[12] - names of the months (optional)
	 * @return  Date - the extracted date value or null if value is blank
	 */
	parseDate: function (format, value, settings) {
		if (format == null || value == null) {
			throw "Invalid arguments";
		}

		value = (typeof value === "object" ? value.toString() : value + "");
		if (value === "") {
			return null;
		}

		var iFormat, dim, extra,
			iValue = 0,
			shortYearCutoffTemp = (settings ? settings.shortYearCutoff : null) || this._defaults.shortYearCutoff,
			shortYearCutoff = (typeof shortYearCutoffTemp !== "string" ? shortYearCutoffTemp :
				new Date().getFullYear() % 100 + parseInt(shortYearCutoffTemp, 10)),
			dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort,
			dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames,
			monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort,
			monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames,
			year = -1,
			month = -1,
			day = -1,
			doy = -1,
			literal = false,
			date,
			// Check whether a format character is doubled
			lookAhead = function(match) {
				var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) === match);
				if (matches) {
					iFormat++;
				}
				return matches;
			},
			// Extract a number from the string value
			getNumber = function(match) {
				var isDoubled = lookAhead(match),
					size = (match === "@" ? 14 : (match === "!" ? 20 :
					(match === "y" && isDoubled ? 4 : (match === "o" ? 3 : 2)))),
					digits = new RegExp("^\\d{1," + size + "}"),
					num = value.substring(iValue).match(digits);
				if (!num) {
					throw "Missing number at position " + iValue;
				}
				iValue += num[0].length;
				return parseInt(num[0], 10);
			},
			// Extract a name from the string value and convert to an index
			getName = function(match, shortNames, longNames) {
				var index = -1,
					names = $.map(lookAhead(match) ? longNames : shortNames, function (v, k) {
						return [ [k, v] ];
					}).sort(function (a, b) {
						return -(a[1].length - b[1].length);
					});

				$.each(names, function (i, pair) {
					var name = pair[1];
					if (value.substr(iValue, name.length).toLowerCase() === name.toLowerCase()) {
						index = pair[0];
						iValue += name.length;
						return false;
					}
				});
				if (index !== -1) {
					return index + 1;
				} else {
					throw "Unknown name at position " + iValue;
				}
			},
			// Confirm that a literal character matches the string value
			checkLiteral = function() {
				if (value.charAt(iValue) !== format.charAt(iFormat)) {
					throw "Unexpected literal at position " + iValue;
				}
				iValue++;
			};

		for (iFormat = 0; iFormat < format.length; iFormat++) {
			if (literal) {
				if (format.charAt(iFormat) === "'" && !lookAhead("'")) {
					literal = false;
				} else {
					checkLiteral();
				}
			} else {
				switch (format.charAt(iFormat)) {
					case "d":
						day = getNumber("d");
						break;
					case "D":
						getName("D", dayNamesShort, dayNames);
						break;
					case "o":
						doy = getNumber("o");
						break;
					case "m":
						month = getNumber("m");
						break;
					case "M":
						month = getName("M", monthNamesShort, monthNames);
						break;
					case "y":
						year = getNumber("y");
						break;
					case "@":
						date = new Date(getNumber("@"));
						year = date.getFullYear();
						month = date.getMonth() + 1;
						day = date.getDate();
						break;
					case "!":
						date = new Date((getNumber("!") - this._ticksTo1970) / 10000);
						year = date.getFullYear();
						month = date.getMonth() + 1;
						day = date.getDate();
						break;
					case "'":
						if (lookAhead("'")){
							checkLiteral();
						} else {
							literal = true;
						}
						break;
					default:
						checkLiteral();
				}
			}
		}

		if (iValue < value.length){
			extra = value.substr(iValue);
			if (!/^\s+/.test(extra)) {
				throw "Extra/unparsed characters found in date: " + extra;
			}
		}

		if (year === -1) {
			year = new Date().getFullYear();
		} else if (year < 100) {
			year += new Date().getFullYear() - new Date().getFullYear() % 100 +
				(year <= shortYearCutoff ? 0 : -100);
		}

		if (doy > -1) {
			month = 1;
			day = doy;
			do {
				dim = this._getDaysInMonth(year, month - 1);
				if (day <= dim) {
					break;
				}
				month++;
				day -= dim;
			} while (true);
		}

		date = this._daylightSavingAdjust(new Date(year, month - 1, day));
		if (date.getFullYear() !== year || date.getMonth() + 1 !== month || date.getDate() !== day) {
			throw "Invalid date"; // E.g. 31/02/00
		}
		return date;
	},

	/* Standard date formats. */
	ATOM: "yy-mm-dd", // RFC 3339 (ISO 8601)
	COOKIE: "D, dd M yy",
	ISO_8601: "yy-mm-dd",
	RFC_822: "D, d M y",
	RFC_850: "DD, dd-M-y",
	RFC_1036: "D, d M y",
	RFC_1123: "D, d M yy",
	RFC_2822: "D, d M yy",
	RSS: "D, d M y", // RFC 822
	TICKS: "!",
	TIMESTAMP: "@",
	W3C: "yy-mm-dd", // ISO 8601

	_ticksTo1970: (((1970 - 1) * 365 + Math.floor(1970 / 4) - Math.floor(1970 / 100) +
		Math.floor(1970 / 400)) * 24 * 60 * 60 * 10000000),

	/* Format a date object into a string value.
	 * The format can be combinations of the following:
	 * d  - day of month (no leading zero)
	 * dd - day of month (two digit)
	 * o  - day of year (no leading zeros)
	 * oo - day of year (three digit)
	 * D  - day name short
	 * DD - day name long
	 * m  - month of year (no leading zero)
	 * mm - month of year (two digit)
	 * M  - month name short
	 * MM - month name long
	 * y  - year (two digit)
	 * yy - year (four digit)
	 * @ - Unix timestamp (ms since 01/01/1970)
	 * ! - Windows ticks (100ns since 01/01/0001)
	 * "..." - literal text
	 * '' - single quote
	 *
	 * @param  format string - the desired format of the date
	 * @param  date Date - the date value to format
	 * @param  settings Object - attributes include:
	 *					dayNamesShort	string[7] - abbreviated names of the days from Sunday (optional)
	 *					dayNames		string[7] - names of the days from Sunday (optional)
	 *					monthNamesShort string[12] - abbreviated names of the months (optional)
	 *					monthNames		string[12] - names of the months (optional)
	 * @return  string - the date in the above format
	 */
	formatDate: function (format, date, settings) {
		if (!date) {
			return "";
		}

		var iFormat,
			dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort,
			dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames,
			monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort,
			monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames,
			// Check whether a format character is doubled
			lookAhead = function(match) {
				var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) === match);
				if (matches) {
					iFormat++;
				}
				return matches;
			},
			// Format a number, with leading zero if necessary
			formatNumber = function(match, value, len) {
				var num = "" + value;
				if (lookAhead(match)) {
					while (num.length < len) {
						num = "0" + num;
					}
				}
				return num;
			},
			// Format a name, short or long as requested
			formatName = function(match, value, shortNames, longNames) {
				return (lookAhead(match) ? longNames[value] : shortNames[value]);
			},
			output = "",
			literal = false;

		if (date) {
			for (iFormat = 0; iFormat < format.length; iFormat++) {
				if (literal) {
					if (format.charAt(iFormat) === "'" && !lookAhead("'")) {
						literal = false;
					} else {
						output += format.charAt(iFormat);
					}
				} else {
					switch (format.charAt(iFormat)) {
						case "d":
							output += formatNumber("d", date.getDate(), 2);
							break;
						case "D":
							output += formatName("D", date.getDay(), dayNamesShort, dayNames);
							break;
						case "o":
							output += formatNumber("o",
								Math.round((new Date(date.getFullYear(), date.getMonth(), date.getDate()).getTime() - new Date(date.getFullYear(), 0, 0).getTime()) / 86400000), 3);
							break;
						case "m":
							output += formatNumber("m", date.getMonth() + 1, 2);
							break;
						case "M":
							output += formatName("M", date.getMonth(), monthNamesShort, monthNames);
							break;
						case "y":
							output += (lookAhead("y") ? date.getFullYear() :
								(date.getYear() % 100 < 10 ? "0" : "") + date.getYear() % 100);
							break;
						case "@":
							output += date.getTime();
							break;
						case "!":
							output += date.getTime() * 10000 + this._ticksTo1970;
							break;
						case "'":
							if (lookAhead("'")) {
								output += "'";
							} else {
								literal = true;
							}
							break;
						default:
							output += format.charAt(iFormat);
					}
				}
			}
		}
		return output;
	},

	/* Extract all possible characters from the date format. */
	_possibleChars: function (format) {
		var iFormat,
			chars = "",
			literal = false,
			// Check whether a format character is doubled
			lookAhead = function(match) {
				var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) === match);
				if (matches) {
					iFormat++;
				}
				return matches;
			};

		for (iFormat = 0; iFormat < format.length; iFormat++) {
			if (literal) {
				if (format.charAt(iFormat) === "'" && !lookAhead("'")) {
					literal = false;
				} else {
					chars += format.charAt(iFormat);
				}
			} else {
				switch (format.charAt(iFormat)) {
					case "d": case "m": case "y": case "@":
						chars += "0123456789";
						break;
					case "D": case "M":
						return null; // Accept anything
					case "'":
						if (lookAhead("'")) {
							chars += "'";
						} else {
							literal = true;
						}
						break;
					default:
						chars += format.charAt(iFormat);
				}
			}
		}
		return chars;
	},

	/* Get a setting value, defaulting if necessary. */
	_get: function(inst, name) {
		return inst.settings[name] !== undefined ?
			inst.settings[name] : this._defaults[name];
	},

	/* Parse existing date and initialise date picker. */
	_setDateFromField: function(inst, noDefault) {
		if (inst.input.val() === inst.lastVal) {
			return;
		}

		var dateFormat = this._get(inst, "dateFormat"),
			dates = inst.lastVal = inst.input ? inst.input.val() : null,
			defaultDate = this._getDefaultDate(inst),
			date = defaultDate,
			settings = this._getFormatConfig(inst);

		try {
			date = this.parseDate(dateFormat, dates, settings) || defaultDate;
		} catch (event) {
			dates = (noDefault ? "" : dates);
		}
		inst.selectedDay = date.getDate();
		inst.drawMonth = inst.selectedMonth = date.getMonth();
		inst.drawYear = inst.selectedYear = date.getFullYear();
		inst.currentDay = (dates ? date.getDate() : 0);
		inst.currentMonth = (dates ? date.getMonth() : 0);
		inst.currentYear = (dates ? date.getFullYear() : 0);
		this._adjustInstDate(inst);
	},

	/* Retrieve the default date shown on opening. */
	_getDefaultDate: function(inst) {
		return this._restrictMinMax(inst,
			this._determineDate(inst, this._get(inst, "defaultDate"), new Date()));
	},

	/* A date may be specified as an exact value or a relative one. */
	_determineDate: function(inst, date, defaultDate) {
		var offsetNumeric = function(offset) {
				var date = new Date();
				date.setDate(date.getDate() + offset);
				return date;
			},
			offsetString = function(offset) {
				try {
					return $.datepicker.parseDate($.datepicker._get(inst, "dateFormat"),
						offset, $.datepicker._getFormatConfig(inst));
				}
				catch (e) {
					// Ignore
				}

				var date = (offset.toLowerCase().match(/^c/) ?
					$.datepicker._getDate(inst) : null) || new Date(),
					year = date.getFullYear(),
					month = date.getMonth(),
					day = date.getDate(),
					pattern = /([+\-]?[0-9]+)\s*(d|D|w|W|m|M|y|Y)?/g,
					matches = pattern.exec(offset);

				while (matches) {
					switch (matches[2] || "d") {
						case "d" : case "D" :
							day += parseInt(matches[1],10); break;
						case "w" : case "W" :
							day += parseInt(matches[1],10) * 7; break;
						case "m" : case "M" :
							month += parseInt(matches[1],10);
							day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
							break;
						case "y": case "Y" :
							year += parseInt(matches[1],10);
							day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
							break;
					}
					matches = pattern.exec(offset);
				}
				return new Date(year, month, day);
			},
			newDate = (date == null || date === "" ? defaultDate : (typeof date === "string" ? offsetString(date) :
				(typeof date === "number" ? (isNaN(date) ? defaultDate : offsetNumeric(date)) : new Date(date.getTime()))));

		newDate = (newDate && newDate.toString() === "Invalid Date" ? defaultDate : newDate);
		if (newDate) {
			newDate.setHours(0);
			newDate.setMinutes(0);
			newDate.setSeconds(0);
			newDate.setMilliseconds(0);
		}
		return this._daylightSavingAdjust(newDate);
	},

	/* Handle switch to/from daylight saving.
	 * Hours may be non-zero on daylight saving cut-over:
	 * > 12 when midnight changeover, but then cannot generate
	 * midnight datetime, so jump to 1AM, otherwise reset.
	 * @param  date  (Date) the date to check
	 * @return  (Date) the corrected date
	 */
	_daylightSavingAdjust: function(date) {
		if (!date) {
			return null;
		}
		date.setHours(date.getHours() > 12 ? date.getHours() + 2 : 0);
		return date;
	},

	/* Set the date(s) directly. */
	_setDate: function(inst, date, noChange) {
		var clear = !date,
			origMonth = inst.selectedMonth,
			origYear = inst.selectedYear,
			newDate = this._restrictMinMax(inst, this._determineDate(inst, date, new Date()));

		inst.selectedDay = inst.currentDay = newDate.getDate();
		inst.drawMonth = inst.selectedMonth = inst.currentMonth = newDate.getMonth();
		inst.drawYear = inst.selectedYear = inst.currentYear = newDate.getFullYear();
		if ((origMonth !== inst.selectedMonth || origYear !== inst.selectedYear) && !noChange) {
			this._notifyChange(inst);
		}
		this._adjustInstDate(inst);
		if (inst.input) {
			inst.input.val(clear ? "" : this._formatDate(inst));
		}
	},

	/* Retrieve the date(s) directly. */
	_getDate: function(inst) {
		var startDate = (!inst.currentYear || (inst.input && inst.input.val() === "") ? null :
			this._daylightSavingAdjust(new Date(
			inst.currentYear, inst.currentMonth, inst.currentDay)));
			return startDate;
	},

	/* Attach the onxxx handlers.  These are declared statically so
	 * they work with static code transformers like Caja.
	 */
	_attachHandlers: function(inst) {
		var stepMonths = this._get(inst, "stepMonths"),
			id = "#" + inst.id.replace( /\\\\/g, "\\" );
		inst.dpDiv.find("[data-handler]").map(function () {
			var handler = {
				prev: function () {
					window["DP_jQuery_" + dpuuid].datepicker._adjustDate(id, -stepMonths, "M");
				},
				next: function () {
					window["DP_jQuery_" + dpuuid].datepicker._adjustDate(id, +stepMonths, "M");
				},
				hide: function () {
					window["DP_jQuery_" + dpuuid].datepicker._hideDatepicker();
				},
				today: function () {
					window["DP_jQuery_" + dpuuid].datepicker._gotoToday(id);
				},
				selectDay: function () {
					window["DP_jQuery_" + dpuuid].datepicker._selectDay(id, +this.getAttribute("data-month"), +this.getAttribute("data-year"), this);
					return false;
				},
				selectMonth: function () {
					window["DP_jQuery_" + dpuuid].datepicker._selectMonthYear(id, this, "M");
					return false;
				},
				selectYear: function () {
					window["DP_jQuery_" + dpuuid].datepicker._selectMonthYear(id, this, "Y");
					return false;
				}
			};
			$(this).bind(this.getAttribute("data-event"), handler[this.getAttribute("data-handler")]);
		});
	},

	/* Generate the HTML for the current state of the date picker. */
	_generateHTML: function(inst) {
		var maxDraw, prevText, prev, nextText, next, currentText, gotoDate,
			controls, buttonPanel, firstDay, showWeek, dayNames, dayNamesMin,
			monthNames, monthNamesShort, beforeShowDay, showOtherMonths,
			selectOtherMonths, defaultDate, html, dow, row, group, col, selectedDate,
			cornerClass, calender, thead, day, daysInMonth, leadDays, curRows, numRows,
			printDate, dRow, tbody, daySettings, otherMonth, unselectable,
			tempDate = new Date(),
			today = this._daylightSavingAdjust(
				new Date(tempDate.getFullYear(), tempDate.getMonth(), tempDate.getDate())), // clear time
			isRTL = this._get(inst, "isRTL"),
			showButtonPanel = this._get(inst, "showButtonPanel"),
			hideIfNoPrevNext = this._get(inst, "hideIfNoPrevNext"),
			navigationAsDateFormat = this._get(inst, "navigationAsDateFormat"),
			numMonths = this._getNumberOfMonths(inst),
			showCurrentAtPos = this._get(inst, "showCurrentAtPos"),
			stepMonths = this._get(inst, "stepMonths"),
			isMultiMonth = (numMonths[0] !== 1 || numMonths[1] !== 1),
			currentDate = this._daylightSavingAdjust((!inst.currentDay ? new Date(9999, 9, 9) :
				new Date(inst.currentYear, inst.currentMonth, inst.currentDay))),
			minDate = this._getMinMaxDate(inst, "min"),
			maxDate = this._getMinMaxDate(inst, "max"),
			drawMonth = inst.drawMonth - showCurrentAtPos,
			drawYear = inst.drawYear;

		if (drawMonth < 0) {
			drawMonth += 12;
			drawYear--;
		}
		if (maxDate) {
			maxDraw = this._daylightSavingAdjust(new Date(maxDate.getFullYear(),
				maxDate.getMonth() - (numMonths[0] * numMonths[1]) + 1, maxDate.getDate()));
			maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
			while (this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1)) > maxDraw) {
				drawMonth--;
				if (drawMonth < 0) {
					drawMonth = 11;
					drawYear--;
				}
			}
		}
		inst.drawMonth = drawMonth;
		inst.drawYear = drawYear;

		prevText = this._get(inst, "prevText");
		prevText = (!navigationAsDateFormat ? prevText : this.formatDate(prevText,
			this._daylightSavingAdjust(new Date(drawYear, drawMonth - stepMonths, 1)),
			this._getFormatConfig(inst)));

		prev = (this._canAdjustMonth(inst, -1, drawYear, drawMonth) ?
			"<a class='ui-datepicker-prev ui-corner-all' data-handler='prev' data-event='click'" +
			" title='" + prevText + "'><span class='ui-icon ui-icon-circle-triangle-" + ( isRTL ? "e" : "w") + "'>" + prevText + "</span></a>" :
			(hideIfNoPrevNext ? "" : "<a class='ui-datepicker-prev ui-corner-all ui-state-disabled' title='"+ prevText +"'><span class='ui-icon ui-icon-circle-triangle-" + ( isRTL ? "e" : "w") + "'>" + prevText + "</span></a>"));

		nextText = this._get(inst, "nextText");
		nextText = (!navigationAsDateFormat ? nextText : this.formatDate(nextText,
			this._daylightSavingAdjust(new Date(drawYear, drawMonth + stepMonths, 1)),
			this._getFormatConfig(inst)));

		next = (this._canAdjustMonth(inst, +1, drawYear, drawMonth) ?
			"<a class='ui-datepicker-next ui-corner-all' data-handler='next' data-event='click'" +
			" title='" + nextText + "'><span class='ui-icon ui-icon-circle-triangle-" + ( isRTL ? "w" : "e") + "'>" + nextText + "</span></a>" :
			(hideIfNoPrevNext ? "" : "<a class='ui-datepicker-next ui-corner-all ui-state-disabled' title='"+ nextText + "'><span class='ui-icon ui-icon-circle-triangle-" + ( isRTL ? "w" : "e") + "'>" + nextText + "</span></a>"));

		currentText = this._get(inst, "currentText");
		gotoDate = (this._get(inst, "gotoCurrent") && inst.currentDay ? currentDate : today);
		currentText = (!navigationAsDateFormat ? currentText :
			this.formatDate(currentText, gotoDate, this._getFormatConfig(inst)));

		controls = (!inst.inline ? "<button type='button' class='ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all' data-handler='hide' data-event='click'>" +
			this._get(inst, "closeText") + "</button>" : "");

		buttonPanel = (showButtonPanel) ? "<div class='ui-datepicker-buttonpane ui-widget-content'>" + (isRTL ? controls : "") +
			(this._isInRange(inst, gotoDate) ? "<button type='button' class='ui-datepicker-current ui-state-default ui-priority-secondary ui-corner-all' data-handler='today' data-event='click'" +
			">" + currentText + "</button>" : "") + (isRTL ? "" : controls) + "</div>" : "";

		firstDay = parseInt(this._get(inst, "firstDay"),10);
		firstDay = (isNaN(firstDay) ? 0 : firstDay);

		showWeek = this._get(inst, "showWeek");
		dayNames = this._get(inst, "dayNames");
		dayNamesMin = this._get(inst, "dayNamesMin");
		monthNames = this._get(inst, "monthNames");
		monthNamesShort = this._get(inst, "monthNamesShort");
		beforeShowDay = this._get(inst, "beforeShowDay");
		showOtherMonths = this._get(inst, "showOtherMonths");
		selectOtherMonths = this._get(inst, "selectOtherMonths");
		defaultDate = this._getDefaultDate(inst);
		html = "";
		dow;
		for (row = 0; row < numMonths[0]; row++) {
			group = "";
			this.maxRows = 4;
			for (col = 0; col < numMonths[1]; col++) {
				selectedDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, inst.selectedDay));
				cornerClass = " ui-corner-all";
				calender = "";
				if (isMultiMonth) {
					calender += "<div class='ui-datepicker-group";
					if (numMonths[1] > 1) {
						switch (col) {
							case 0: calender += " ui-datepicker-group-first";
								cornerClass = " ui-corner-" + (isRTL ? "right" : "left"); break;
							case numMonths[1]-1: calender += " ui-datepicker-group-last";
								cornerClass = " ui-corner-" + (isRTL ? "left" : "right"); break;
							default: calender += " ui-datepicker-group-middle"; cornerClass = ""; break;
						}
					}
					calender += "'>";
				}
				calender += "<div class='ui-datepicker-header ui-widget-header ui-helper-clearfix" + cornerClass + "'>" +
					(/all|left/.test(cornerClass) && row === 0 ? (isRTL ? next : prev) : "") +
					(/all|right/.test(cornerClass) && row === 0 ? (isRTL ? prev : next) : "") +
					this._generateMonthYearHeader(inst, drawMonth, drawYear, minDate, maxDate,
					row > 0 || col > 0, monthNames, monthNamesShort) + // draw month headers
					"</div><table class='ui-datepicker-calendar'><thead>" +
					"<tr>";
				thead = (showWeek ? "<th class='ui-datepicker-week-col'>" + this._get(inst, "weekHeader") + "</th>" : "");
				for (dow = 0; dow < 7; dow++) { // days of the week
					day = (dow + firstDay) % 7;
					thead += "<th" + ((dow + firstDay + 6) % 7 >= 5 ? " class='ui-datepicker-week-end'" : "") + ">" +
						"<span title='" + dayNames[day] + "'>" + dayNamesMin[day] + "</span></th>";
				}
				calender += thead + "</tr></thead><tbody>";
				daysInMonth = this._getDaysInMonth(drawYear, drawMonth);
				if (drawYear === inst.selectedYear && drawMonth === inst.selectedMonth) {
					inst.selectedDay = Math.min(inst.selectedDay, daysInMonth);
				}
				leadDays = (this._getFirstDayOfMonth(drawYear, drawMonth) - firstDay + 7) % 7;
				curRows = Math.ceil((leadDays + daysInMonth) / 7); // calculate the number of rows to generate
				numRows = (isMultiMonth ? this.maxRows > curRows ? this.maxRows : curRows : curRows); //If multiple months, use the higher number of rows (see #7043)
				this.maxRows = numRows;
				printDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1 - leadDays));
				for (dRow = 0; dRow < numRows; dRow++) { // create date picker rows
					calender += "<tr>";
					tbody = (!showWeek ? "" : "<td class='ui-datepicker-week-col'>" +
						this._get(inst, "calculateWeek")(printDate) + "</td>");
					for (dow = 0; dow < 7; dow++) { // create date picker days
						daySettings = (beforeShowDay ?
							beforeShowDay.apply((inst.input ? inst.input[0] : null), [printDate]) : [true, ""]);
						otherMonth = (printDate.getMonth() !== drawMonth);
						unselectable = (otherMonth && !selectOtherMonths) || !daySettings[0] ||
							(minDate && printDate < minDate) || (maxDate && printDate > maxDate);
						tbody += "<td class='" +
							((dow + firstDay + 6) % 7 >= 5 ? " ui-datepicker-week-end" : "") + // highlight weekends
							(otherMonth ? " ui-datepicker-other-month" : "") + // highlight days from other months
							((printDate.getTime() === selectedDate.getTime() && drawMonth === inst.selectedMonth && inst._keyEvent) || // user pressed key
							(defaultDate.getTime() === printDate.getTime() && defaultDate.getTime() === selectedDate.getTime()) ?
							// or defaultDate is current printedDate and defaultDate is selectedDate
							" " + this._dayOverClass : "") + // highlight selected day
							(unselectable ? " " + this._unselectableClass + " ui-state-disabled": "") +  // highlight unselectable days
							(otherMonth && !showOtherMonths ? "" : " " + daySettings[1] + // highlight custom dates
							(printDate.getTime() === currentDate.getTime() ? " " + this._currentClass : "") + // highlight selected day
							(printDate.getTime() === today.getTime() ? " ui-datepicker-today" : "")) + "'" + // highlight today (if different)
							((!otherMonth || showOtherMonths) && daySettings[2] ? " title='" + daySettings[2].replace(/'/g, "&#39;") + "'" : "") + // cell title
							(unselectable ? "" : " data-handler='selectDay' data-event='click' data-month='" + printDate.getMonth() + "' data-year='" + printDate.getFullYear() + "'") + ">" + // actions
							(otherMonth && !showOtherMonths ? "&#xa0;" : // display for other months
							(unselectable ? "<span class='ui-state-default'>" + printDate.getDate() + "</span>" : "<a class='ui-state-default" +
							(printDate.getTime() === today.getTime() ? " ui-state-highlight" : "") +
							(printDate.getTime() === currentDate.getTime() ? " ui-state-active" : "") + // highlight selected day
							(otherMonth ? " ui-priority-secondary" : "") + // distinguish dates from other months
							"' href='#'>" + printDate.getDate() + "</a>")) + "</td>"; // display selectable date
						printDate.setDate(printDate.getDate() + 1);
						printDate = this._daylightSavingAdjust(printDate);
					}
					calender += tbody + "</tr>";
				}
				drawMonth++;
				if (drawMonth > 11) {
					drawMonth = 0;
					drawYear++;
				}
				calender += "</tbody></table>" + (isMultiMonth ? "</div>" +
							((numMonths[0] > 0 && col === numMonths[1]-1) ? "<div class='ui-datepicker-row-break'></div>" : "") : "");
				group += calender;
			}
			html += group;
		}
		html += buttonPanel;
		inst._keyEvent = false;
		return html;
	},

	/* Generate the month and year header. */
	_generateMonthYearHeader: function(inst, drawMonth, drawYear, minDate, maxDate,
			secondary, monthNames, monthNamesShort) {

		var inMinYear, inMaxYear, month, years, thisYear, determineYear, year, endYear,
			changeMonth = this._get(inst, "changeMonth"),
			changeYear = this._get(inst, "changeYear"),
			showMonthAfterYear = this._get(inst, "showMonthAfterYear"),
			html = "<div class='ui-datepicker-title'>",
			monthHtml = "";

		// month selection
		if (secondary || !changeMonth) {
			monthHtml += "<span class='ui-datepicker-month'>" + monthNames[drawMonth] + "</span>";
		} else {
			inMinYear = (minDate && minDate.getFullYear() === drawYear);
			inMaxYear = (maxDate && maxDate.getFullYear() === drawYear);
			monthHtml += "<select class='ui-datepicker-month' data-handler='selectMonth' data-event='change'>";
			for ( month = 0; month < 12; month++) {
				if ((!inMinYear || month >= minDate.getMonth()) && (!inMaxYear || month <= maxDate.getMonth())) {
					monthHtml += "<option value='" + month + "'" +
						(month === drawMonth ? " selected='selected'" : "") +
						">" + monthNamesShort[month] + "</option>";
				}
			}
			monthHtml += "</select>";
		}

		if (!showMonthAfterYear) {
			html += monthHtml + (secondary || !(changeMonth && changeYear) ? "&#xa0;" : "");
		}

		// year selection
		if ( !inst.yearshtml ) {
			inst.yearshtml = "";
			if (secondary || !changeYear) {
				html += "<span class='ui-datepicker-year'>" + drawYear + "</span>";
			} else {
				// determine range of years to display
				years = this._get(inst, "yearRange").split(":");
				thisYear = new Date().getFullYear();
				determineYear = function(value) {
					var year = (value.match(/c[+\-].*/) ? drawYear + parseInt(value.substring(1), 10) :
						(value.match(/[+\-].*/) ? thisYear + parseInt(value, 10) :
						parseInt(value, 10)));
					return (isNaN(year) ? thisYear : year);
				};
				year = determineYear(years[0]);
				endYear = Math.max(year, determineYear(years[1] || ""));
				year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
				endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
				inst.yearshtml += "<select class='ui-datepicker-year' data-handler='selectYear' data-event='change'>";
				for (; year <= endYear; year++) {
					inst.yearshtml += "<option value='" + year + "'" +
						(year === drawYear ? " selected='selected'" : "") +
						">" + year + "</option>";
				}
				inst.yearshtml += "</select>";

				html += inst.yearshtml;
				inst.yearshtml = null;
			}
		}

		html += this._get(inst, "yearSuffix");
		if (showMonthAfterYear) {
			html += (secondary || !(changeMonth && changeYear) ? "&#xa0;" : "") + monthHtml;
		}
		html += "</div>"; // Close datepicker_header
		return html;
	},

	/* Adjust one of the date sub-fields. */
	_adjustInstDate: function(inst, offset, period) {
		var year = inst.drawYear + (period === "Y" ? offset : 0),
			month = inst.drawMonth + (period === "M" ? offset : 0),
			day = Math.min(inst.selectedDay, this._getDaysInMonth(year, month)) + (period === "D" ? offset : 0),
			date = this._restrictMinMax(inst, this._daylightSavingAdjust(new Date(year, month, day)));

		inst.selectedDay = date.getDate();
		inst.drawMonth = inst.selectedMonth = date.getMonth();
		inst.drawYear = inst.selectedYear = date.getFullYear();
		if (period === "M" || period === "Y") {
			this._notifyChange(inst);
		}
	},

	/* Ensure a date is within any min/max bounds. */
	_restrictMinMax: function(inst, date) {
		var minDate = this._getMinMaxDate(inst, "min"),
			maxDate = this._getMinMaxDate(inst, "max"),
			newDate = (minDate && date < minDate ? minDate : date);
		return (maxDate && newDate > maxDate ? maxDate : newDate);
	},

	/* Notify change of month/year. */
	_notifyChange: function(inst) {
		var onChange = this._get(inst, "onChangeMonthYear");
		if (onChange) {
			onChange.apply((inst.input ? inst.input[0] : null),
				[inst.selectedYear, inst.selectedMonth + 1, inst]);
		}
	},

	/* Determine the number of months to show. */
	_getNumberOfMonths: function(inst) {
		var numMonths = this._get(inst, "numberOfMonths");
		return (numMonths == null ? [1, 1] : (typeof numMonths === "number" ? [1, numMonths] : numMonths));
	},

	/* Determine the current maximum date - ensure no time components are set. */
	_getMinMaxDate: function(inst, minMax) {
		return this._determineDate(inst, this._get(inst, minMax + "Date"), null);
	},

	/* Find the number of days in a given month. */
	_getDaysInMonth: function(year, month) {
		return 32 - this._daylightSavingAdjust(new Date(year, month, 32)).getDate();
	},

	/* Find the day of the week of the first of a month. */
	_getFirstDayOfMonth: function(year, month) {
		return new Date(year, month, 1).getDay();
	},

	/* Determines if we should allow a "next/prev" month display change. */
	_canAdjustMonth: function(inst, offset, curYear, curMonth) {
		var numMonths = this._getNumberOfMonths(inst),
			date = this._daylightSavingAdjust(new Date(curYear,
			curMonth + (offset < 0 ? offset : numMonths[0] * numMonths[1]), 1));

		if (offset < 0) {
			date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
		}
		return this._isInRange(inst, date);
	},

	/* Is the given date in the accepted range? */
	_isInRange: function(inst, date) {
		var yearSplit, currentYear,
			minDate = this._getMinMaxDate(inst, "min"),
			maxDate = this._getMinMaxDate(inst, "max"),
			minYear = null,
			maxYear = null,
			years = this._get(inst, "yearRange");
			if (years){
				yearSplit = years.split(":");
				currentYear = new Date().getFullYear();
				minYear = parseInt(yearSplit[0], 10);
				maxYear = parseInt(yearSplit[1], 10);
				if ( yearSplit[0].match(/[+\-].*/) ) {
					minYear += currentYear;
				}
				if ( yearSplit[1].match(/[+\-].*/) ) {
					maxYear += currentYear;
				}
			}

		return ((!minDate || date.getTime() >= minDate.getTime()) &&
			(!maxDate || date.getTime() <= maxDate.getTime()) &&
			(!minYear || date.getFullYear() >= minYear) &&
			(!maxYear || date.getFullYear() <= maxYear));
	},

	/* Provide the configuration settings for formatting/parsing. */
	_getFormatConfig: function(inst) {
		var shortYearCutoff = this._get(inst, "shortYearCutoff");
		shortYearCutoff = (typeof shortYearCutoff !== "string" ? shortYearCutoff :
			new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
		return {shortYearCutoff: shortYearCutoff,
			dayNamesShort: this._get(inst, "dayNamesShort"), dayNames: this._get(inst, "dayNames"),
			monthNamesShort: this._get(inst, "monthNamesShort"), monthNames: this._get(inst, "monthNames")};
	},

	/* Format the given date for display. */
	_formatDate: function(inst, day, month, year) {
		if (!day) {
			inst.currentDay = inst.selectedDay;
			inst.currentMonth = inst.selectedMonth;
			inst.currentYear = inst.selectedYear;
		}
		var date = (day ? (typeof day === "object" ? day :
			this._daylightSavingAdjust(new Date(year, month, day))) :
			this._daylightSavingAdjust(new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
		return this.formatDate(this._get(inst, "dateFormat"), date, this._getFormatConfig(inst));
	}
});

/*
 * Bind hover events for datepicker elements.
 * Done via delegate so the binding only occurs once in the lifetime of the parent div.
 * Global instActive, set by _updateDatepicker allows the handlers to find their way back to the active picker.
 */
function bindHover(dpDiv) {
	var selector = "button, .ui-datepicker-prev, .ui-datepicker-next, .ui-datepicker-calendar td a";
	return dpDiv.delegate(selector, "mouseout", function() {
			$(this).removeClass("ui-state-hover");
			if (this.className.indexOf("ui-datepicker-prev") !== -1) {
				$(this).removeClass("ui-datepicker-prev-hover");
			}
			if (this.className.indexOf("ui-datepicker-next") !== -1) {
				$(this).removeClass("ui-datepicker-next-hover");
			}
		})
		.delegate(selector, "mouseover", function(){
			if (!$.datepicker._isDisabledDatepicker( instActive.inline ? dpDiv.parent()[0] : instActive.input[0])) {
				$(this).parents(".ui-datepicker-calendar").find("a").removeClass("ui-state-hover");
				$(this).addClass("ui-state-hover");
				if (this.className.indexOf("ui-datepicker-prev") !== -1) {
					$(this).addClass("ui-datepicker-prev-hover");
				}
				if (this.className.indexOf("ui-datepicker-next") !== -1) {
					$(this).addClass("ui-datepicker-next-hover");
				}
			}
		});
}

/* jQuery extend now ignores nulls! */
function extendRemove(target, props) {
	$.extend(target, props);
	for (var name in props) {
		if (props[name] == null) {
			target[name] = props[name];
		}
	}
	return target;
}

/* Invoke the datepicker functionality.
   @param  options  string - a command, optionally followed by additional parameters or
					Object - settings for attaching new datepicker functionality
   @return  jQuery object */
$.fn.datepicker = function(options){

	/* Verify an empty collection wasn't passed - Fixes #6976 */
	if ( !this.length ) {
		return this;
	}

	/* Initialise the date picker. */
	if (!$.datepicker.initialized) {
		$(document).mousedown($.datepicker._checkExternalClick);
		$.datepicker.initialized = true;
	}

	/* Append datepicker main container to body if not exist. */
	if ($("#"+$.datepicker._mainDivId).length === 0) {
		$("body").append($.datepicker.dpDiv);
	}

	var otherArgs = Array.prototype.slice.call(arguments, 1);
	if (typeof options === "string" && (options === "isDisabled" || options === "getDate" || options === "widget")) {
		return $.datepicker["_" + options + "Datepicker"].
			apply($.datepicker, [this[0]].concat(otherArgs));
	}
	if (options === "option" && arguments.length === 2 && typeof arguments[1] === "string") {
		return $.datepicker["_" + options + "Datepicker"].
			apply($.datepicker, [this[0]].concat(otherArgs));
	}
	return this.each(function() {
		typeof options === "string" ?
			$.datepicker["_" + options + "Datepicker"].
				apply($.datepicker, [this].concat(otherArgs)) :
			$.datepicker._attachDatepicker(this, options);
	});
};

$.datepicker = new Datepicker(); // singleton instance
$.datepicker.initialized = false;
$.datepicker.uuid = new Date().getTime();
$.datepicker.version = "1.10.1";

// Workaround for #4055
// Add another global to avoid noConflict issues with inline event handlers
window["DP_jQuery_" + dpuuid] = $;

})(jQuery);
(function( $, undefined ) {

var sizeRelatedOptions = {
		buttons: true,
		height: true,
		maxHeight: true,
		maxWidth: true,
		minHeight: true,
		minWidth: true,
		width: true
	},
	resizableRelatedOptions = {
		maxHeight: true,
		maxWidth: true,
		minHeight: true,
		minWidth: true
	};

$.widget( "ui.dialog", {
	version: "1.10.1",
	options: {
		appendTo: "body",
		autoOpen: true,
		buttons: [],
		closeOnEscape: true,
		closeText: "close",
		dialogClass: "",
		draggable: true,
		hide: null,
		height: "auto",
		maxHeight: null,
		maxWidth: null,
		minHeight: 150,
		minWidth: 150,
		modal: false,
		position: {
			my: "center",
			at: "center",
			of: window,
			collision: "fit",
			// Ensure the titlebar is always visible
			using: function( pos ) {
				var topOffset = $( this ).css( pos ).offset().top;
				if ( topOffset < 0 ) {
					$( this ).css( "top", pos.top - topOffset );
				}
			}
		},
		resizable: true,
		show: null,
		title: null,
		width: 300,

		// callbacks
		beforeClose: null,
		close: null,
		drag: null,
		dragStart: null,
		dragStop: null,
		focus: null,
		open: null,
		resize: null,
		resizeStart: null,
		resizeStop: null
	},

	_create: function() {
		this.originalCss = {
			display: this.element[0].style.display,
			width: this.element[0].style.width,
			minHeight: this.element[0].style.minHeight,
			maxHeight: this.element[0].style.maxHeight,
			height: this.element[0].style.height
		};
		this.originalPosition = {
			parent: this.element.parent(),
			index: this.element.parent().children().index( this.element )
		};
		this.originalTitle = this.element.attr("title");
		this.options.title = this.options.title || this.originalTitle;

		this._createWrapper();

		this.element
			.show()
			.removeAttr("title")
			.addClass("ui-dialog-content ui-widget-content")
			.appendTo( this.uiDialog );

		this._createTitlebar();
		this._createButtonPane();

		if ( this.options.draggable && $.fn.draggable ) {
			this._makeDraggable();
		}
		if ( this.options.resizable && $.fn.resizable ) {
			this._makeResizable();
		}

		this._isOpen = false;
	},

	_init: function() {
		if ( this.options.autoOpen ) {
			this.open();
		}
	},

	_appendTo: function() {
		var element = this.options.appendTo;
		if ( element && (element.jquery || element.nodeType) ) {
			return $( element );
		}
		return this.document.find( element || "body" ).eq( 0 );
	},

	_destroy: function() {
		var next,
			originalPosition = this.originalPosition;

		this._destroyOverlay();

		this.element
			.removeUniqueId()
			.removeClass("ui-dialog-content ui-widget-content")
			.css( this.originalCss )
			// Without detaching first, the following becomes really slow
			.detach();

		this.uiDialog.stop( true, true ).remove();

		if ( this.originalTitle ) {
			this.element.attr( "title", this.originalTitle );
		}

		next = originalPosition.parent.children().eq( originalPosition.index );
		// Don't try to place the dialog next to itself (#8613)
		if ( next.length && next[0] !== this.element[0] ) {
			next.before( this.element );
		} else {
			originalPosition.parent.append( this.element );
		}
	},

	widget: function() {
		return this.uiDialog;
	},

	disable: $.noop,
	enable: $.noop,

	close: function( event ) {
		var that = this;

		if ( !this._isOpen || this._trigger( "beforeClose", event ) === false ) {
			return;
		}

		this._isOpen = false;
		this._destroyOverlay();

		if ( !this.opener.filter(":focusable").focus().length ) {
			// Hiding a focused element doesn't trigger blur in WebKit
			// so in case we have nothing to focus on, explicitly blur the active element
			// https://bugs.webkit.org/show_bug.cgi?id=47182
			$( this.document[0].activeElement ).blur();
		}

		this._hide( this.uiDialog, this.options.hide, function() {
			that._trigger( "close", event );
		});
	},

	isOpen: function() {
		return this._isOpen;
	},

	moveToTop: function() {
		this._moveToTop();
	},

	_moveToTop: function( event, silent ) {
		var moved = !!this.uiDialog.nextAll(":visible").insertBefore( this.uiDialog ).length;
		if ( moved && !silent ) {
			this._trigger( "focus", event );
		}
		return moved;
	},

	open: function() {
		var that = this;
		if ( this._isOpen ) {
			if ( this._moveToTop() ) {
				this._focusTabbable();
			}
			return;
		}

		this._isOpen = true;
		this.opener = $( this.document[0].activeElement );

		this._size();
		this._position();
		this._createOverlay();
		this._moveToTop( null, true );
		this._show( this.uiDialog, this.options.show, function() {
			that._focusTabbable();
			that._trigger("focus");
		});

		this._trigger("open");
	},

	_focusTabbable: function() {
		// Set focus to the first match:
		// 1. First element inside the dialog matching [autofocus]
		// 2. Tabbable element inside the content element
		// 3. Tabbable element inside the buttonpane
		// 4. The close button
		// 5. The dialog itself
		var hasFocus = this.element.find("[autofocus]");
		if ( !hasFocus.length ) {
			hasFocus = this.element.find(":tabbable");
		}
		if ( !hasFocus.length ) {
			hasFocus = this.uiDialogButtonPane.find(":tabbable");
		}
		if ( !hasFocus.length ) {
			hasFocus = this.uiDialogTitlebarClose.filter(":tabbable");
		}
		if ( !hasFocus.length ) {
			hasFocus = this.uiDialog;
		}
		hasFocus.eq( 0 ).focus();
	},

	_keepFocus: function( event ) {
		function checkFocus() {
			var activeElement = this.document[0].activeElement,
				isActive = this.uiDialog[0] === activeElement ||
					$.contains( this.uiDialog[0], activeElement );
			if ( !isActive ) {
				this._focusTabbable();
			}
		}
		event.preventDefault();
		checkFocus.call( this );
		// support: IE
		// IE <= 8 doesn't prevent moving focus even with event.preventDefault()
		// so we check again later
		this._delay( checkFocus );
	},

	_createWrapper: function() {
		this.uiDialog = $("<div>")
			.addClass( "ui-dialog ui-widget ui-widget-content ui-corner-all ui-front " +
				this.options.dialogClass )
			.hide()
			.attr({
				// Setting tabIndex makes the div focusable
				tabIndex: -1,
				role: "dialog"
			})
			.appendTo( this._appendTo() );

		this._on( this.uiDialog, {
			keydown: function( event ) {
				if ( this.options.closeOnEscape && !event.isDefaultPrevented() && event.keyCode &&
						event.keyCode === $.ui.keyCode.ESCAPE ) {
					event.preventDefault();
					this.close( event );
					return;
				}

				// prevent tabbing out of dialogs
				if ( event.keyCode !== $.ui.keyCode.TAB ) {
					return;
				}
				var tabbables = this.uiDialog.find(":tabbable"),
					first = tabbables.filter(":first"),
					last  = tabbables.filter(":last");

				if ( ( event.target === last[0] || event.target === this.uiDialog[0] ) && !event.shiftKey ) {
					first.focus( 1 );
					event.preventDefault();
				} else if ( ( event.target === first[0] || event.target === this.uiDialog[0] ) && event.shiftKey ) {
					last.focus( 1 );
					event.preventDefault();
				}
			},
			mousedown: function( event ) {
				if ( this._moveToTop( event ) ) {
					this._focusTabbable();
				}
			}
		});

		// We assume that any existing aria-describedby attribute means
		// that the dialog content is marked up properly
		// otherwise we brute force the content as the description
		if ( !this.element.find("[aria-describedby]").length ) {
			this.uiDialog.attr({
				"aria-describedby": this.element.uniqueId().attr("id")
			});
		}
	},

	_createTitlebar: function() {
		var uiDialogTitle;

		this.uiDialogTitlebar = $("<div>")
			.addClass("ui-dialog-titlebar ui-widget-header ui-corner-all ui-helper-clearfix")
			.prependTo( this.uiDialog );
		this._on( this.uiDialogTitlebar, {
			mousedown: function( event ) {
				// Don't prevent click on close button (#8838)
				// Focusing a dialog that is partially scrolled out of view
				// causes the browser to scroll it into view, preventing the click event
				if ( !$( event.target ).closest(".ui-dialog-titlebar-close") ) {
					// Dialog isn't getting focus when dragging (#8063)
					this.uiDialog.focus();
				}
			}
		});

		this.uiDialogTitlebarClose = $("<button></button>")
			.button({
				label: this.options.closeText,
				icons: {
					primary: "ui-icon-closethick"
				},
				text: false
			})
			.addClass("ui-dialog-titlebar-close")
			.appendTo( this.uiDialogTitlebar );
		this._on( this.uiDialogTitlebarClose, {
			click: function( event ) {
				event.preventDefault();
				this.close( event );
			}
		});

		uiDialogTitle = $("<span>")
			.uniqueId()
			.addClass("ui-dialog-title")
			.prependTo( this.uiDialogTitlebar );
		this._title( uiDialogTitle );

		this.uiDialog.attr({
			"aria-labelledby": uiDialogTitle.attr("id")
		});
	},

	_title: function( title ) {
		if ( !this.options.title ) {
			title.html("&#160;");
		}
		title.text( this.options.title );
	},

	_createButtonPane: function() {
		this.uiDialogButtonPane = $("<div>")
			.addClass("ui-dialog-buttonpane ui-widget-content ui-helper-clearfix");

		this.uiButtonSet = $("<div>")
			.addClass("ui-dialog-buttonset")
			.appendTo( this.uiDialogButtonPane );

		this._createButtons();
	},

	_createButtons: function() {
		var that = this,
			buttons = this.options.buttons;

		// if we already have a button pane, remove it
		this.uiDialogButtonPane.remove();
		this.uiButtonSet.empty();

		if ( $.isEmptyObject( buttons ) || ($.isArray( buttons ) && !buttons.length) ) {
			this.uiDialog.removeClass("ui-dialog-buttons");
			return;
		}

		$.each( buttons, function( name, props ) {
			var click, buttonOptions;
			props = $.isFunction( props ) ?
				{ click: props, text: name } :
				props;
			// Default to a non-submitting button
			props = $.extend( { type: "button" }, props );
			// Change the context for the click callback to be the main element
			click = props.click;
			props.click = function() {
				click.apply( that.element[0], arguments );
			};
			buttonOptions = {
				icons: props.icons,
				text: props.showText
			};
			delete props.icons;
			delete props.showText;
			$( "<button></button>", props )
				.button( buttonOptions )
				.appendTo( that.uiButtonSet );
		});
		this.uiDialog.addClass("ui-dialog-buttons");
		this.uiDialogButtonPane.appendTo( this.uiDialog );
	},

	_makeDraggable: function() {
		var that = this,
			options = this.options;

		function filteredUi( ui ) {
			return {
				position: ui.position,
				offset: ui.offset
			};
		}

		this.uiDialog.draggable({
			cancel: ".ui-dialog-content, .ui-dialog-titlebar-close",
			handle: ".ui-dialog-titlebar",
			containment: "document",
			start: function( event, ui ) {
				$( this ).addClass("ui-dialog-dragging");
				that._blockFrames();
				that._trigger( "dragStart", event, filteredUi( ui ) );
			},
			drag: function( event, ui ) {
				that._trigger( "drag", event, filteredUi( ui ) );
			},
			stop: function( event, ui ) {
				options.position = [
					ui.position.left - that.document.scrollLeft(),
					ui.position.top - that.document.scrollTop()
				];
				$( this ).removeClass("ui-dialog-dragging");
				that._unblockFrames();
				that._trigger( "dragStop", event, filteredUi( ui ) );
			}
		});
	},

	_makeResizable: function() {
		var that = this,
			options = this.options,
			handles = options.resizable,
			// .ui-resizable has position: relative defined in the stylesheet
			// but dialogs have to use absolute or fixed positioning
			position = this.uiDialog.css("position"),
			resizeHandles = typeof handles === "string" ?
				handles	:
				"n,e,s,w,se,sw,ne,nw";

		function filteredUi( ui ) {
			return {
				originalPosition: ui.originalPosition,
				originalSize: ui.originalSize,
				position: ui.position,
				size: ui.size
			};
		}

		this.uiDialog.resizable({
			cancel: ".ui-dialog-content",
			containment: "document",
			alsoResize: this.element,
			maxWidth: options.maxWidth,
			maxHeight: options.maxHeight,
			minWidth: options.minWidth,
			minHeight: this._minHeight(),
			handles: resizeHandles,
			start: function( event, ui ) {
				$( this ).addClass("ui-dialog-resizing");
				that._blockFrames();
				that._trigger( "resizeStart", event, filteredUi( ui ) );
			},
			resize: function( event, ui ) {
				that._trigger( "resize", event, filteredUi( ui ) );
			},
			stop: function( event, ui ) {
				options.height = $( this ).height();
				options.width = $( this ).width();
				$( this ).removeClass("ui-dialog-resizing");
				that._unblockFrames();
				that._trigger( "resizeStop", event, filteredUi( ui ) );
			}
		})
		.css( "position", position );
	},

	_minHeight: function() {
		var options = this.options;

		return options.height === "auto" ?
			options.minHeight :
			Math.min( options.minHeight, options.height );
	},

	_position: function() {
		// Need to show the dialog to get the actual offset in the position plugin
		var isVisible = this.uiDialog.is(":visible");
		if ( !isVisible ) {
			this.uiDialog.show();
		}
		this.uiDialog.position( this.options.position );
		if ( !isVisible ) {
			this.uiDialog.hide();
		}
	},

	_setOptions: function( options ) {
		var that = this,
			resize = false,
			resizableOptions = {};

		$.each( options, function( key, value ) {
			that._setOption( key, value );

			if ( key in sizeRelatedOptions ) {
				resize = true;
			}
			if ( key in resizableRelatedOptions ) {
				resizableOptions[ key ] = value;
			}
		});

		if ( resize ) {
			this._size();
			this._position();
		}
		if ( this.uiDialog.is(":data(ui-resizable)") ) {
			this.uiDialog.resizable( "option", resizableOptions );
		}
	},

	_setOption: function( key, value ) {
		/*jshint maxcomplexity:15*/
		var isDraggable, isResizable,
			uiDialog = this.uiDialog;

		if ( key === "dialogClass" ) {
			uiDialog
				.removeClass( this.options.dialogClass )
				.addClass( value );
		}

		if ( key === "disabled" ) {
			return;
		}

		this._super( key, value );

		if ( key === "appendTo" ) {
			this.uiDialog.appendTo( this._appendTo() );
		}

		if ( key === "buttons" ) {
			this._createButtons();
		}

		if ( key === "closeText" ) {
			this.uiDialogTitlebarClose.button({
				// Ensure that we always pass a string
				label: "" + value
			});
		}

		if ( key === "draggable" ) {
			isDraggable = uiDialog.is(":data(ui-draggable)");
			if ( isDraggable && !value ) {
				uiDialog.draggable("destroy");
			}

			if ( !isDraggable && value ) {
				this._makeDraggable();
			}
		}

		if ( key === "position" ) {
			this._position();
		}

		if ( key === "resizable" ) {
			// currently resizable, becoming non-resizable
			isResizable = uiDialog.is(":data(ui-resizable)");
			if ( isResizable && !value ) {
				uiDialog.resizable("destroy");
			}

			// currently resizable, changing handles
			if ( isResizable && typeof value === "string" ) {
				uiDialog.resizable( "option", "handles", value );
			}

			// currently non-resizable, becoming resizable
			if ( !isResizable && value !== false ) {
				this._makeResizable();
			}
		}

		if ( key === "title" ) {
			this._title( this.uiDialogTitlebar.find(".ui-dialog-title") );
		}
	},

	_size: function() {
		// If the user has resized the dialog, the .ui-dialog and .ui-dialog-content
		// divs will both have width and height set, so we need to reset them
		var nonContentHeight, minContentHeight, maxContentHeight,
			options = this.options;

		// Reset content sizing
		this.element.show().css({
			width: "auto",
			minHeight: 0,
			maxHeight: "none",
			height: 0
		});

		if ( options.minWidth > options.width ) {
			options.width = options.minWidth;
		}

		// reset wrapper sizing
		// determine the height of all the non-content elements
		nonContentHeight = this.uiDialog.css({
				height: "auto",
				width: options.width
			})
			.outerHeight();
		minContentHeight = Math.max( 0, options.minHeight - nonContentHeight );
		maxContentHeight = typeof options.maxHeight === "number" ?
			Math.max( 0, options.maxHeight - nonContentHeight ) :
			"none";

		if ( options.height === "auto" ) {
			this.element.css({
				minHeight: minContentHeight,
				maxHeight: maxContentHeight,
				height: "auto"
			});
		} else {
			this.element.height( Math.max( 0, options.height - nonContentHeight ) );
		}

		if (this.uiDialog.is(":data(ui-resizable)") ) {
			this.uiDialog.resizable( "option", "minHeight", this._minHeight() );
		}
	},

	_blockFrames: function() {
		this.iframeBlocks = this.document.find( "iframe" ).map(function() {
			var iframe = $( this );

			return $( "<div>" )
				.css({
					position: "absolute",
					width: iframe.outerWidth(),
					height: iframe.outerHeight()
				})
				.appendTo( iframe.parent() )
				.offset( iframe.offset() )[0];
		});
	},

	_unblockFrames: function() {
		if ( this.iframeBlocks ) {
			this.iframeBlocks.remove();
			delete this.iframeBlocks;
		}
	},

	_createOverlay: function() {
		if ( !this.options.modal ) {
			return;
		}

		if ( !$.ui.dialog.overlayInstances ) {
			// Prevent use of anchors and inputs.
			// We use a delay in case the overlay is created from an
			// event that we're going to be cancelling. (#2804)
			this._delay(function() {
				// Handle .dialog().dialog("close") (#4065)
				if ( $.ui.dialog.overlayInstances ) {
					this.document.bind( "focusin.dialog", function( event ) {
						if ( !$( event.target ).closest(".ui-dialog").length &&
								// TODO: Remove hack when datepicker implements
								// the .ui-front logic (#8989)
								!$( event.target ).closest(".ui-datepicker").length ) {
							event.preventDefault();
							$(".ui-dialog:visible:last .ui-dialog-content")
								.data("ui-dialog")._focusTabbable();
						}
					});
				}
			});
		}

		this.overlay = $("<div>")
			.addClass("ui-widget-overlay ui-front")
			.appendTo( this._appendTo() );
		this._on( this.overlay, {
			mousedown: "_keepFocus"
		});
		$.ui.dialog.overlayInstances++;
	},

	_destroyOverlay: function() {
		if ( !this.options.modal ) {
			return;
		}

		if ( this.overlay ) {
			$.ui.dialog.overlayInstances--;

			if ( !$.ui.dialog.overlayInstances ) {
				this.document.unbind( "focusin.dialog" );
			}
			this.overlay.remove();
			this.overlay = null;
		}
	}
});

$.ui.dialog.overlayInstances = 0;

// DEPRECATED
if ( $.uiBackCompat !== false ) {
	// position option with array notation
	// just override with old implementation
	$.widget( "ui.dialog", $.ui.dialog, {
		_position: function() {
			var position = this.options.position,
				myAt = [],
				offset = [ 0, 0 ],
				isVisible;

			if ( position ) {
				if ( typeof position === "string" || (typeof position === "object" && "0" in position ) ) {
					myAt = position.split ? position.split(" ") : [ position[0], position[1] ];
					if ( myAt.length === 1 ) {
						myAt[1] = myAt[0];
					}

					$.each( [ "left", "top" ], function( i, offsetPosition ) {
						if ( +myAt[ i ] === myAt[ i ] ) {
							offset[ i ] = myAt[ i ];
							myAt[ i ] = offsetPosition;
						}
					});

					position = {
						my: myAt[0] + (offset[0] < 0 ? offset[0] : "+" + offset[0]) + " " +
							myAt[1] + (offset[1] < 0 ? offset[1] : "+" + offset[1]),
						at: myAt.join(" ")
					};
				}

				position = $.extend( {}, $.ui.dialog.prototype.options.position, position );
			} else {
				position = $.ui.dialog.prototype.options.position;
			}

			// need to show the dialog to get the actual offset in the position plugin
			isVisible = this.uiDialog.is(":visible");
			if ( !isVisible ) {
				this.uiDialog.show();
			}
			this.uiDialog.position( position );
			if ( !isVisible ) {
				this.uiDialog.hide();
			}
		}
	});
}

}( jQuery ) );
(function( $, undefined ) {

$.widget( "ui.menu", {
	version: "1.10.1",
	defaultElement: "<ul>",
	delay: 300,
	options: {
		icons: {
			submenu: "ui-icon-carat-1-e"
		},
		menus: "ul",
		position: {
			my: "left top",
			at: "right top"
		},
		role: "menu",

		// callbacks
		blur: null,
		focus: null,
		select: null
	},

	_create: function() {
		this.activeMenu = this.element;
		// flag used to prevent firing of the click handler
		// as the event bubbles up through nested menus
		this.mouseHandled = false;
		this.element
			.uniqueId()
			.addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" )
			.toggleClass( "ui-menu-icons", !!this.element.find( ".ui-icon" ).length )
			.attr({
				role: this.options.role,
				tabIndex: 0
			})
			// need to catch all clicks on disabled menu
			// not possible through _on
			.bind( "click" + this.eventNamespace, $.proxy(function( event ) {
				if ( this.options.disabled ) {
					event.preventDefault();
				}
			}, this ));

		if ( this.options.disabled ) {
			this.element
				.addClass( "ui-state-disabled" )
				.attr( "aria-disabled", "true" );
		}

		this._on({
			// Prevent focus from sticking to links inside menu after clicking
			// them (focus should always stay on UL during navigation).
			"mousedown .ui-menu-item > a": function( event ) {
				event.preventDefault();
			},
			"click .ui-state-disabled > a": function( event ) {
				event.preventDefault();
			},
			"click .ui-menu-item:has(a)": function( event ) {
				var target = $( event.target ).closest( ".ui-menu-item" );
				if ( !this.mouseHandled && target.not( ".ui-state-disabled" ).length ) {
					this.mouseHandled = true;

					this.select( event );
					// Open submenu on click
					if ( target.has( ".ui-menu" ).length ) {
						this.expand( event );
					} else if ( !this.element.is( ":focus" ) ) {
						// Redirect focus to the menu
						this.element.trigger( "focus", [ true ] );

						// If the active item is on the top level, let it stay active.
						// Otherwise, blur the active item since it is no longer visible.
						if ( this.active && this.active.parents( ".ui-menu" ).length === 1 ) {
							clearTimeout( this.timer );
						}
					}
				}
			},
			"mouseenter .ui-menu-item": function( event ) {
				var target = $( event.currentTarget );
				// Remove ui-state-active class from siblings of the newly focused menu item
				// to avoid a jump caused by adjacent elements both having a class with a border
				target.siblings().children( ".ui-state-active" ).removeClass( "ui-state-active" );
				this.focus( event, target );
			},
			mouseleave: "collapseAll",
			"mouseleave .ui-menu": "collapseAll",
			focus: function( event, keepActiveItem ) {
				// If there's already an active item, keep it active
				// If not, activate the first item
				var item = this.active || this.element.children( ".ui-menu-item" ).eq( 0 );

				if ( !keepActiveItem ) {
					this.focus( event, item );
				}
			},
			blur: function( event ) {
				this._delay(function() {
					if ( !$.contains( this.element[0], this.document[0].activeElement ) ) {
						this.collapseAll( event );
					}
				});
			},
			keydown: "_keydown"
		});

		this.refresh();

		// Clicks outside of a menu collapse any open menus
		this._on( this.document, {
			click: function( event ) {
				if ( !$( event.target ).closest( ".ui-menu" ).length ) {
					this.collapseAll( event );
				}

				// Reset the mouseHandled flag
				this.mouseHandled = false;
			}
		});
	},

	_destroy: function() {
		// Destroy (sub)menus
		this.element
			.removeAttr( "aria-activedescendant" )
			.find( ".ui-menu" ).addBack()
				.removeClass( "ui-menu ui-widget ui-widget-content ui-corner-all ui-menu-icons" )
				.removeAttr( "role" )
				.removeAttr( "tabIndex" )
				.removeAttr( "aria-labelledby" )
				.removeAttr( "aria-expanded" )
				.removeAttr( "aria-hidden" )
				.removeAttr( "aria-disabled" )
				.removeUniqueId()
				.show();

		// Destroy menu items
		this.element.find( ".ui-menu-item" )
			.removeClass( "ui-menu-item" )
			.removeAttr( "role" )
			.removeAttr( "aria-disabled" )
			.children( "a" )
				.removeUniqueId()
				.removeClass( "ui-corner-all ui-state-hover" )
				.removeAttr( "tabIndex" )
				.removeAttr( "role" )
				.removeAttr( "aria-haspopup" )
				.children().each( function() {
					var elem = $( this );
					if ( elem.data( "ui-menu-submenu-carat" ) ) {
						elem.remove();
					}
				});

		// Destroy menu dividers
		this.element.find( ".ui-menu-divider" ).removeClass( "ui-menu-divider ui-widget-content" );
	},

	_keydown: function( event ) {
		/*jshint maxcomplexity:20*/
		var match, prev, character, skip, regex,
			preventDefault = true;

		function escape( value ) {
			return value.replace( /[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&" );
		}

		switch ( event.keyCode ) {
		case $.ui.keyCode.PAGE_UP:
			this.previousPage( event );
			break;
		case $.ui.keyCode.PAGE_DOWN:
			this.nextPage( event );
			break;
		case $.ui.keyCode.HOME:
			this._move( "first", "first", event );
			break;
		case $.ui.keyCode.END:
			this._move( "last", "last", event );
			break;
		case $.ui.keyCode.UP:
			this.previous( event );
			break;
		case $.ui.keyCode.DOWN:
			this.next( event );
			break;
		case $.ui.keyCode.LEFT:
			this.collapse( event );
			break;
		case $.ui.keyCode.RIGHT:
			if ( this.active && !this.active.is( ".ui-state-disabled" ) ) {
				this.expand( event );
			}
			break;
		case $.ui.keyCode.ENTER:
		case $.ui.keyCode.SPACE:
			this._activate( event );
			break;
		case $.ui.keyCode.ESCAPE:
			this.collapse( event );
			break;
		default:
			preventDefault = false;
			prev = this.previousFilter || "";
			character = String.fromCharCode( event.keyCode );
			skip = false;

			clearTimeout( this.filterTimer );

			if ( character === prev ) {
				skip = true;
			} else {
				character = prev + character;
			}

			regex = new RegExp( "^" + escape( character ), "i" );
			match = this.activeMenu.children( ".ui-menu-item" ).filter(function() {
				return regex.test( $( this ).children( "a" ).text() );
			});
			match = skip && match.index( this.active.next() ) !== -1 ?
				this.active.nextAll( ".ui-menu-item" ) :
				match;

			// If no matches on the current filter, reset to the last character pressed
			// to move down the menu to the first item that starts with that character
			if ( !match.length ) {
				character = String.fromCharCode( event.keyCode );
				regex = new RegExp( "^" + escape( character ), "i" );
				match = this.activeMenu.children( ".ui-menu-item" ).filter(function() {
					return regex.test( $( this ).children( "a" ).text() );
				});
			}

			if ( match.length ) {
				this.focus( event, match );
				if ( match.length > 1 ) {
					this.previousFilter = character;
					this.filterTimer = this._delay(function() {
						delete this.previousFilter;
					}, 1000 );
				} else {
					delete this.previousFilter;
				}
			} else {
				delete this.previousFilter;
			}
		}

		if ( preventDefault ) {
			event.preventDefault();
		}
	},

	_activate: function( event ) {
		if ( !this.active.is( ".ui-state-disabled" ) ) {
			if ( this.active.children( "a[aria-haspopup='true']" ).length ) {
				this.expand( event );
			} else {
				this.select( event );
			}
		}
	},

	refresh: function() {
		var menus,
			icon = this.options.icons.submenu,
			submenus = this.element.find( this.options.menus );

		// Initialize nested menus
		submenus.filter( ":not(.ui-menu)" )
			.addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" )
			.hide()
			.attr({
				role: this.options.role,
				"aria-hidden": "true",
				"aria-expanded": "false"
			})
			.each(function() {
				var menu = $( this ),
					item = menu.prev( "a" ),
					submenuCarat = $( "<span>" )
						.addClass( "ui-menu-icon ui-icon " + icon )
						.data( "ui-menu-submenu-carat", true );

				item
					.attr( "aria-haspopup", "true" )
					.prepend( submenuCarat );
				menu.attr( "aria-labelledby", item.attr( "id" ) );
			});

		menus = submenus.add( this.element );

		// Don't refresh list items that are already adapted
		menus.children( ":not(.ui-menu-item):has(a)" )
			.addClass( "ui-menu-item" )
			.attr( "role", "presentation" )
			.children( "a" )
				.uniqueId()
				.addClass( "ui-corner-all" )
				.attr({
					tabIndex: -1,
					role: this._itemRole()
				});

		// Initialize unlinked menu-items containing spaces and/or dashes only as dividers
		menus.children( ":not(.ui-menu-item)" ).each(function() {
			var item = $( this );
			// hyphen, em dash, en dash
			if ( !/[^\-\u2014\u2013\s]/.test( item.text() ) ) {
				item.addClass( "ui-widget-content ui-menu-divider" );
			}
		});

		// Add aria-disabled attribute to any disabled menu item
		menus.children( ".ui-state-disabled" ).attr( "aria-disabled", "true" );

		// If the active item has been removed, blur the menu
		if ( this.active && !$.contains( this.element[ 0 ], this.active[ 0 ] ) ) {
			this.blur();
		}
	},

	_itemRole: function() {
		return {
			menu: "menuitem",
			listbox: "option"
		}[ this.options.role ];
	},

	_setOption: function( key, value ) {
		if ( key === "icons" ) {
			this.element.find( ".ui-menu-icon" )
				.removeClass( this.options.icons.submenu )
				.addClass( value.submenu );
		}
		this._super( key, value );
	},

	focus: function( event, item ) {
		var nested, focused;
		this.blur( event, event && event.type === "focus" );

		this._scrollIntoView( item );

		this.active = item.first();
		focused = this.active.children( "a" ).addClass( "ui-state-focus" );
		// Only update aria-activedescendant if there's a role
		// otherwise we assume focus is managed elsewhere
		if ( this.options.role ) {
			this.element.attr( "aria-activedescendant", focused.attr( "id" ) );
		}

		// Highlight active parent menu item, if any
		this.active
			.parent()
			.closest( ".ui-menu-item" )
			.children( "a:first" )
			.addClass( "ui-state-active" );

		if ( event && event.type === "keydown" ) {
			this._close();
		} else {
			this.timer = this._delay(function() {
				this._close();
			}, this.delay );
		}

		nested = item.children( ".ui-menu" );
		if ( nested.length && ( /^mouse/.test( event.type ) ) ) {
			this._startOpening(nested);
		}
		this.activeMenu = item.parent();

		this._trigger( "focus", event, { item: item } );
	},

	_scrollIntoView: function( item ) {
		var borderTop, paddingTop, offset, scroll, elementHeight, itemHeight;
		if ( this._hasScroll() ) {
			borderTop = parseFloat( $.css( this.activeMenu[0], "borderTopWidth" ) ) || 0;
			paddingTop = parseFloat( $.css( this.activeMenu[0], "paddingTop" ) ) || 0;
			offset = item.offset().top - this.activeMenu.offset().top - borderTop - paddingTop;
			scroll = this.activeMenu.scrollTop();
			elementHeight = this.activeMenu.height();
			itemHeight = item.height();

			if ( offset < 0 ) {
				this.activeMenu.scrollTop( scroll + offset );
			} else if ( offset + itemHeight > elementHeight ) {
				this.activeMenu.scrollTop( scroll + offset - elementHeight + itemHeight );
			}
		}
	},

	blur: function( event, fromFocus ) {
		if ( !fromFocus ) {
			clearTimeout( this.timer );
		}

		if ( !this.active ) {
			return;
		}

		this.active.children( "a" ).removeClass( "ui-state-focus" );
		this.active = null;

		this._trigger( "blur", event, { item: this.active } );
	},

	_startOpening: function( submenu ) {
		clearTimeout( this.timer );

		// Don't open if already open fixes a Firefox bug that caused a .5 pixel
		// shift in the submenu position when mousing over the carat icon
		if ( submenu.attr( "aria-hidden" ) !== "true" ) {
			return;
		}

		this.timer = this._delay(function() {
			this._close();
			this._open( submenu );
		}, this.delay );
	},

	_open: function( submenu ) {
		var position = $.extend({
			of: this.active
		}, this.options.position );

		clearTimeout( this.timer );
		this.element.find( ".ui-menu" ).not( submenu.parents( ".ui-menu" ) )
			.hide()
			.attr( "aria-hidden", "true" );

		submenu
			.show()
			.removeAttr( "aria-hidden" )
			.attr( "aria-expanded", "true" )
			.position( position );
	},

	collapseAll: function( event, all ) {
		clearTimeout( this.timer );
		this.timer = this._delay(function() {
			// If we were passed an event, look for the submenu that contains the event
			var currentMenu = all ? this.element :
				$( event && event.target ).closest( this.element.find( ".ui-menu" ) );

			// If we found no valid submenu ancestor, use the main menu to close all sub menus anyway
			if ( !currentMenu.length ) {
				currentMenu = this.element;
			}

			this._close( currentMenu );

			this.blur( event );
			this.activeMenu = currentMenu;
		}, this.delay );
	},

	// With no arguments, closes the currently active menu - if nothing is active
	// it closes all menus.  If passed an argument, it will search for menus BELOW
	_close: function( startMenu ) {
		if ( !startMenu ) {
			startMenu = this.active ? this.active.parent() : this.element;
		}

		startMenu
			.find( ".ui-menu" )
				.hide()
				.attr( "aria-hidden", "true" )
				.attr( "aria-expanded", "false" )
			.end()
			.find( "a.ui-state-active" )
				.removeClass( "ui-state-active" );
	},

	collapse: function( event ) {
		var newItem = this.active &&
			this.active.parent().closest( ".ui-menu-item", this.element );
		if ( newItem && newItem.length ) {
			this._close();
			this.focus( event, newItem );
		}
	},

	expand: function( event ) {
		var newItem = this.active &&
			this.active
				.children( ".ui-menu " )
				.children( ".ui-menu-item" )
				.first();

		if ( newItem && newItem.length ) {
			this._open( newItem.parent() );

			// Delay so Firefox will not hide activedescendant change in expanding submenu from AT
			this._delay(function() {
				this.focus( event, newItem );
			});
		}
	},

	next: function( event ) {
		this._move( "next", "first", event );
	},

	previous: function( event ) {
		this._move( "prev", "last", event );
	},

	isFirstItem: function() {
		return this.active && !this.active.prevAll( ".ui-menu-item" ).length;
	},

	isLastItem: function() {
		return this.active && !this.active.nextAll( ".ui-menu-item" ).length;
	},

	_move: function( direction, filter, event ) {
		var next;
		if ( this.active ) {
			if ( direction === "first" || direction === "last" ) {
				next = this.active
					[ direction === "first" ? "prevAll" : "nextAll" ]( ".ui-menu-item" )
					.eq( -1 );
			} else {
				next = this.active
					[ direction + "All" ]( ".ui-menu-item" )
					.eq( 0 );
			}
		}
		if ( !next || !next.length || !this.active ) {
			next = this.activeMenu.children( ".ui-menu-item" )[ filter ]();
		}

		this.focus( event, next );
	},

	nextPage: function( event ) {
		var item, base, height;

		if ( !this.active ) {
			this.next( event );
			return;
		}
		if ( this.isLastItem() ) {
			return;
		}
		if ( this._hasScroll() ) {
			base = this.active.offset().top;
			height = this.element.height();
			this.active.nextAll( ".ui-menu-item" ).each(function() {
				item = $( this );
				return item.offset().top - base - height < 0;
			});

			this.focus( event, item );
		} else {
			this.focus( event, this.activeMenu.children( ".ui-menu-item" )
				[ !this.active ? "first" : "last" ]() );
		}
	},

	previousPage: function( event ) {
		var item, base, height;
		if ( !this.active ) {
			this.next( event );
			return;
		}
		if ( this.isFirstItem() ) {
			return;
		}
		if ( this._hasScroll() ) {
			base = this.active.offset().top;
			height = this.element.height();
			this.active.prevAll( ".ui-menu-item" ).each(function() {
				item = $( this );
				return item.offset().top - base + height > 0;
			});

			this.focus( event, item );
		} else {
			this.focus( event, this.activeMenu.children( ".ui-menu-item" ).first() );
		}
	},

	_hasScroll: function() {
		return this.element.outerHeight() < this.element.prop( "scrollHeight" );
	},

	select: function( event ) {
		// TODO: It should never be possible to not have an active item at this
		// point, but the tests don't trigger mouseenter before click.
		this.active = this.active || $( event.target ).closest( ".ui-menu-item" );
		var ui = { item: this.active };
		if ( !this.active.has( ".ui-menu" ).length ) {
			this.collapseAll( event, true );
		}
		this._trigger( "select", event, ui );
	}
});

}( jQuery ));
(function( $, undefined ) {

$.widget( "ui.progressbar", {
	version: "1.10.1",
	options: {
		max: 100,
		value: 0,

		change: null,
		complete: null
	},

	min: 0,

	_create: function() {
		// Constrain initial value
		this.oldValue = this.options.value = this._constrainedValue();

		this.element
			.addClass( "ui-progressbar ui-widget ui-widget-content ui-corner-all" )
			.attr({
				// Only set static values, aria-valuenow and aria-valuemax are
				// set inside _refreshValue()
				role: "progressbar",
				"aria-valuemin": this.min
			});

		this.valueDiv = $( "<div class='ui-progressbar-value ui-widget-header ui-corner-left'></div>" )
			.appendTo( this.element );

		this._refreshValue();
	},

	_destroy: function() {
		this.element
			.removeClass( "ui-progressbar ui-widget ui-widget-content ui-corner-all" )
			.removeAttr( "role" )
			.removeAttr( "aria-valuemin" )
			.removeAttr( "aria-valuemax" )
			.removeAttr( "aria-valuenow" );

		this.valueDiv.remove();
	},

	value: function( newValue ) {
		if ( newValue === undefined ) {
			return this.options.value;
		}

		this.options.value = this._constrainedValue( newValue );
		this._refreshValue();
	},

	_constrainedValue: function( newValue ) {
		if ( newValue === undefined ) {
			newValue = this.options.value;
		}

		this.indeterminate = newValue === false;

		// sanitize value
		if ( typeof newValue !== "number" ) {
			newValue = 0;
		}

		return this.indeterminate ? false :
			Math.min( this.options.max, Math.max( this.min, newValue ) );
	},

	_setOptions: function( options ) {
		// Ensure "value" option is set after other values (like max)
		var value = options.value;
		delete options.value;

		this._super( options );

		this.options.value = this._constrainedValue( value );
		this._refreshValue();
	},

	_setOption: function( key, value ) {
		if ( key === "max" ) {
			// Don't allow a max less than min
			value = Math.max( this.min, value );
		}

		this._super( key, value );
	},

	_percentage: function() {
		return this.indeterminate ? 100 : 100 * ( this.options.value - this.min ) / ( this.options.max - this.min );
	},

	_refreshValue: function() {
		var value = this.options.value,
			percentage = this._percentage();

		this.valueDiv
			.toggle( this.indeterminate || value > this.min )
			.toggleClass( "ui-corner-right", value === this.options.max )
			.width( percentage.toFixed(0) + "%" );

		this.element.toggleClass( "ui-progressbar-indeterminate", this.indeterminate );

		if ( this.indeterminate ) {
			this.element.removeAttr( "aria-valuenow" );
			if ( !this.overlayDiv ) {
				this.overlayDiv = $( "<div class='ui-progressbar-overlay'></div>" ).appendTo( this.valueDiv );
			}
		} else {
			this.element.attr({
				"aria-valuemax": this.options.max,
				"aria-valuenow": value
			});
			if ( this.overlayDiv ) {
				this.overlayDiv.remove();
				this.overlayDiv = null;
			}
		}

		if ( this.oldValue !== value ) {
			this.oldValue = value;
			this._trigger( "change" );
		}
		if ( value === this.options.max ) {
			this._trigger( "complete" );
		}
	}
});

})( jQuery );
(function( $, undefined ) {

// number of pages in a slider
// (how many times can you page up/down to go through the whole range)
var numPages = 5;

$.widget( "ui.slider", $.ui.mouse, {
	version: "1.10.1",
	widgetEventPrefix: "slide",

	options: {
		animate: false,
		distance: 0,
		max: 100,
		min: 0,
		orientation: "horizontal",
		range: false,
		step: 1,
		value: 0,
		values: null,

		// callbacks
		change: null,
		slide: null,
		start: null,
		stop: null
	},

	_create: function() {
		this._keySliding = false;
		this._mouseSliding = false;
		this._animateOff = true;
		this._handleIndex = null;
		this._detectOrientation();
		this._mouseInit();

		this.element
			.addClass( "ui-slider" +
				" ui-slider-" + this.orientation +
				" ui-widget" +
				" ui-widget-content" +
				" ui-corner-all");

		this._refresh();
		this._setOption( "disabled", this.options.disabled );

		this._animateOff = false;
	},

	_refresh: function() {
		this._createRange();
		this._createHandles();
		this._setupEvents();
		this._refreshValue();
	},

	_createHandles: function() {
		var i, handleCount,
			options = this.options,
			existingHandles = this.element.find( ".ui-slider-handle" ).addClass( "ui-state-default ui-corner-all" ),
			handle = "<a class='ui-slider-handle ui-state-default ui-corner-all' href='#'></a>",
			handles = [];

		handleCount = ( options.values && options.values.length ) || 1;

		if ( existingHandles.length > handleCount ) {
			existingHandles.slice( handleCount ).remove();
			existingHandles = existingHandles.slice( 0, handleCount );
		}

		for ( i = existingHandles.length; i < handleCount; i++ ) {
			handles.push( handle );
		}

		this.handles = existingHandles.add( $( handles.join( "" ) ).appendTo( this.element ) );

		this.handle = this.handles.eq( 0 );

		this.handles.each(function( i ) {
			$( this ).data( "ui-slider-handle-index", i );
		});
	},

	_createRange: function() {
		var options = this.options,
			classes = "";

		if ( options.range ) {
			if ( options.range === true ) {
				if ( !options.values ) {
					options.values = [ this._valueMin(), this._valueMin() ];
				} else if ( options.values.length && options.values.length !== 2 ) {
					options.values = [ options.values[0], options.values[0] ];
				} else if ( $.isArray( options.values ) ) {
					options.values = options.values.slice(0);
				}
			}

			if ( !this.range || !this.range.length ) {
				this.range = $( "<div></div>" )
					.appendTo( this.element );

				classes = "ui-slider-range" +
				// note: this isn't the most fittingly semantic framework class for this element,
				// but worked best visually with a variety of themes
				" ui-widget-header ui-corner-all";
			} else {
				this.range.removeClass( "ui-slider-range-min ui-slider-range-max" )
					// Handle range switching from true to min/max
					.css({
						"left": "",
						"bottom": ""
					});
			}

			this.range.addClass( classes +
				( ( options.range === "min" || options.range === "max" ) ? " ui-slider-range-" + options.range : "" ) );
		} else {
			this.range = $([]);
		}
	},

	_setupEvents: function() {
		var elements = this.handles.add( this.range ).filter( "a" );
		this._off( elements );
		this._on( elements, this._handleEvents );
		this._hoverable( elements );
		this._focusable( elements );
	},

	_destroy: function() {
		this.handles.remove();
		this.range.remove();

		this.element
			.removeClass( "ui-slider" +
				" ui-slider-horizontal" +
				" ui-slider-vertical" +
				" ui-widget" +
				" ui-widget-content" +
				" ui-corner-all" );

		this._mouseDestroy();
	},

	_mouseCapture: function( event ) {
		var position, normValue, distance, closestHandle, index, allowed, offset, mouseOverHandle,
			that = this,
			o = this.options;

		if ( o.disabled ) {
			return false;
		}

		this.elementSize = {
			width: this.element.outerWidth(),
			height: this.element.outerHeight()
		};
		this.elementOffset = this.element.offset();

		position = { x: event.pageX, y: event.pageY };
		normValue = this._normValueFromMouse( position );
		distance = this._valueMax() - this._valueMin() + 1;
		this.handles.each(function( i ) {
			var thisDistance = Math.abs( normValue - that.values(i) );
			if (( distance > thisDistance ) ||
				( distance === thisDistance &&
					(i === that._lastChangedValue || that.values(i) === o.min ))) {
				distance = thisDistance;
				closestHandle = $( this );
				index = i;
			}
		});

		allowed = this._start( event, index );
		if ( allowed === false ) {
			return false;
		}
		this._mouseSliding = true;

		this._handleIndex = index;

		closestHandle
			.addClass( "ui-state-active" )
			.focus();

		offset = closestHandle.offset();
		mouseOverHandle = !$( event.target ).parents().addBack().is( ".ui-slider-handle" );
		this._clickOffset = mouseOverHandle ? { left: 0, top: 0 } : {
			left: event.pageX - offset.left - ( closestHandle.width() / 2 ),
			top: event.pageY - offset.top -
				( closestHandle.height() / 2 ) -
				( parseInt( closestHandle.css("borderTopWidth"), 10 ) || 0 ) -
				( parseInt( closestHandle.css("borderBottomWidth"), 10 ) || 0) +
				( parseInt( closestHandle.css("marginTop"), 10 ) || 0)
		};

		if ( !this.handles.hasClass( "ui-state-hover" ) ) {
			this._slide( event, index, normValue );
		}
		this._animateOff = true;
		return true;
	},

	_mouseStart: function() {
		return true;
	},

	_mouseDrag: function( event ) {
		var position = { x: event.pageX, y: event.pageY },
			normValue = this._normValueFromMouse( position );

		this._slide( event, this._handleIndex, normValue );

		return false;
	},

	_mouseStop: function( event ) {
		this.handles.removeClass( "ui-state-active" );
		this._mouseSliding = false;

		this._stop( event, this._handleIndex );
		this._change( event, this._handleIndex );

		this._handleIndex = null;
		this._clickOffset = null;
		this._animateOff = false;

		return false;
	},

	_detectOrientation: function() {
		this.orientation = ( this.options.orientation === "vertical" ) ? "vertical" : "horizontal";
	},

	_normValueFromMouse: function( position ) {
		var pixelTotal,
			pixelMouse,
			percentMouse,
			valueTotal,
			valueMouse;

		if ( this.orientation === "horizontal" ) {
			pixelTotal = this.elementSize.width;
			pixelMouse = position.x - this.elementOffset.left - ( this._clickOffset ? this._clickOffset.left : 0 );
		} else {
			pixelTotal = this.elementSize.height;
			pixelMouse = position.y - this.elementOffset.top - ( this._clickOffset ? this._clickOffset.top : 0 );
		}

		percentMouse = ( pixelMouse / pixelTotal );
		if ( percentMouse > 1 ) {
			percentMouse = 1;
		}
		if ( percentMouse < 0 ) {
			percentMouse = 0;
		}
		if ( this.orientation === "vertical" ) {
			percentMouse = 1 - percentMouse;
		}

		valueTotal = this._valueMax() - this._valueMin();
		valueMouse = this._valueMin() + percentMouse * valueTotal;

		return this._trimAlignValue( valueMouse );
	},

	_start: function( event, index ) {
		var uiHash = {
			handle: this.handles[ index ],
			value: this.value()
		};
		if ( this.options.values && this.options.values.length ) {
			uiHash.value = this.values( index );
			uiHash.values = this.values();
		}
		return this._trigger( "start", event, uiHash );
	},

	_slide: function( event, index, newVal ) {
		var otherVal,
			newValues,
			allowed;

		if ( this.options.values && this.options.values.length ) {
			otherVal = this.values( index ? 0 : 1 );

			if ( ( this.options.values.length === 2 && this.options.range === true ) &&
					( ( index === 0 && newVal > otherVal) || ( index === 1 && newVal < otherVal ) )
				) {
				newVal = otherVal;
			}

			if ( newVal !== this.values( index ) ) {
				newValues = this.values();
				newValues[ index ] = newVal;
				// A slide can be canceled by returning false from the slide callback
				allowed = this._trigger( "slide", event, {
					handle: this.handles[ index ],
					value: newVal,
					values: newValues
				} );
				otherVal = this.values( index ? 0 : 1 );
				if ( allowed !== false ) {
					this.values( index, newVal, true );
				}
			}
		} else {
			if ( newVal !== this.value() ) {
				// A slide can be canceled by returning false from the slide callback
				allowed = this._trigger( "slide", event, {
					handle: this.handles[ index ],
					value: newVal
				} );
				if ( allowed !== false ) {
					this.value( newVal );
				}
			}
		}
	},

	_stop: function( event, index ) {
		var uiHash = {
			handle: this.handles[ index ],
			value: this.value()
		};
		if ( this.options.values && this.options.values.length ) {
			uiHash.value = this.values( index );
			uiHash.values = this.values();
		}

		this._trigger( "stop", event, uiHash );
	},

	_change: function( event, index ) {
		if ( !this._keySliding && !this._mouseSliding ) {
			var uiHash = {
				handle: this.handles[ index ],
				value: this.value()
			};
			if ( this.options.values && this.options.values.length ) {
				uiHash.value = this.values( index );
				uiHash.values = this.values();
			}

			//store the last changed value index for reference when handles overlap
			this._lastChangedValue = index;

			this._trigger( "change", event, uiHash );
		}
	},

	value: function( newValue ) {
		if ( arguments.length ) {
			this.options.value = this._trimAlignValue( newValue );
			this._refreshValue();
			this._change( null, 0 );
			return;
		}

		return this._value();
	},

	values: function( index, newValue ) {
		var vals,
			newValues,
			i;

		if ( arguments.length > 1 ) {
			this.options.values[ index ] = this._trimAlignValue( newValue );
			this._refreshValue();
			this._change( null, index );
			return;
		}

		if ( arguments.length ) {
			if ( $.isArray( arguments[ 0 ] ) ) {
				vals = this.options.values;
				newValues = arguments[ 0 ];
				for ( i = 0; i < vals.length; i += 1 ) {
					vals[ i ] = this._trimAlignValue( newValues[ i ] );
					this._change( null, i );
				}
				this._refreshValue();
			} else {
				if ( this.options.values && this.options.values.length ) {
					return this._values( index );
				} else {
					return this.value();
				}
			}
		} else {
			return this._values();
		}
	},

	_setOption: function( key, value ) {
		var i,
			valsLength = 0;

		if ( key === "range" && this.options.range === true ) {
			if ( value === "min" ) {
				this.options.value = this._values( 0 );
				this.options.values = null;
			} else if ( value === "max" ) {
				this.options.value = this._values( this.options.values.length-1 );
				this.options.values = null;
			}
		}

		if ( $.isArray( this.options.values ) ) {
			valsLength = this.options.values.length;
		}

		$.Widget.prototype._setOption.apply( this, arguments );

		switch ( key ) {
			case "orientation":
				this._detectOrientation();
				this.element
					.removeClass( "ui-slider-horizontal ui-slider-vertical" )
					.addClass( "ui-slider-" + this.orientation );
				this._refreshValue();
				break;
			case "value":
				this._animateOff = true;
				this._refreshValue();
				this._change( null, 0 );
				this._animateOff = false;
				break;
			case "values":
				this._animateOff = true;
				this._refreshValue();
				for ( i = 0; i < valsLength; i += 1 ) {
					this._change( null, i );
				}
				this._animateOff = false;
				break;
			case "min":
			case "max":
				this._animateOff = true;
				this._refreshValue();
				this._animateOff = false;
				break;
			case "range":
				this._animateOff = true;
				this._refresh();
				this._animateOff = false;
				break;
		}
	},

	//internal value getter
	// _value() returns value trimmed by min and max, aligned by step
	_value: function() {
		var val = this.options.value;
		val = this._trimAlignValue( val );

		return val;
	},

	//internal values getter
	// _values() returns array of values trimmed by min and max, aligned by step
	// _values( index ) returns single value trimmed by min and max, aligned by step
	_values: function( index ) {
		var val,
			vals,
			i;

		if ( arguments.length ) {
			val = this.options.values[ index ];
			val = this._trimAlignValue( val );

			return val;
		} else if ( this.options.values && this.options.values.length ) {
			// .slice() creates a copy of the array
			// this copy gets trimmed by min and max and then returned
			vals = this.options.values.slice();
			for ( i = 0; i < vals.length; i+= 1) {
				vals[ i ] = this._trimAlignValue( vals[ i ] );
			}

			return vals;
		} else {
			return [];
		}
	},

	// returns the step-aligned value that val is closest to, between (inclusive) min and max
	_trimAlignValue: function( val ) {
		if ( val <= this._valueMin() ) {
			return this._valueMin();
		}
		if ( val >= this._valueMax() ) {
			return this._valueMax();
		}
		var step = ( this.options.step > 0 ) ? this.options.step : 1,
			valModStep = (val - this._valueMin()) % step,
			alignValue = val - valModStep;

		if ( Math.abs(valModStep) * 2 >= step ) {
			alignValue += ( valModStep > 0 ) ? step : ( -step );
		}

		// Since JavaScript has problems with large floats, round
		// the final value to 5 digits after the decimal point (see #4124)
		return parseFloat( alignValue.toFixed(5) );
	},

	_valueMin: function() {
		return this.options.min;
	},

	_valueMax: function() {
		return this.options.max;
	},

	_refreshValue: function() {
		var lastValPercent, valPercent, value, valueMin, valueMax,
			oRange = this.options.range,
			o = this.options,
			that = this,
			animate = ( !this._animateOff ) ? o.animate : false,
			_set = {};

		if ( this.options.values && this.options.values.length ) {
			this.handles.each(function( i ) {
				valPercent = ( that.values(i) - that._valueMin() ) / ( that._valueMax() - that._valueMin() ) * 100;
				_set[ that.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";
				$( this ).stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );
				if ( that.options.range === true ) {
					if ( that.orientation === "horizontal" ) {
						if ( i === 0 ) {
							that.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( { left: valPercent + "%" }, o.animate );
						}
						if ( i === 1 ) {
							that.range[ animate ? "animate" : "css" ]( { width: ( valPercent - lastValPercent ) + "%" }, { queue: false, duration: o.animate } );
						}
					} else {
						if ( i === 0 ) {
							that.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( { bottom: ( valPercent ) + "%" }, o.animate );
						}
						if ( i === 1 ) {
							that.range[ animate ? "animate" : "css" ]( { height: ( valPercent - lastValPercent ) + "%" }, { queue: false, duration: o.animate } );
						}
					}
				}
				lastValPercent = valPercent;
			});
		} else {
			value = this.value();
			valueMin = this._valueMin();
			valueMax = this._valueMax();
			valPercent = ( valueMax !== valueMin ) ?
					( value - valueMin ) / ( valueMax - valueMin ) * 100 :
					0;
			_set[ this.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";
			this.handle.stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );

			if ( oRange === "min" && this.orientation === "horizontal" ) {
				this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( { width: valPercent + "%" }, o.animate );
			}
			if ( oRange === "max" && this.orientation === "horizontal" ) {
				this.range[ animate ? "animate" : "css" ]( { width: ( 100 - valPercent ) + "%" }, { queue: false, duration: o.animate } );
			}
			if ( oRange === "min" && this.orientation === "vertical" ) {
				this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( { height: valPercent + "%" }, o.animate );
			}
			if ( oRange === "max" && this.orientation === "vertical" ) {
				this.range[ animate ? "animate" : "css" ]( { height: ( 100 - valPercent ) + "%" }, { queue: false, duration: o.animate } );
			}
		}
	},

	_handleEvents: {
		keydown: function( event ) {
			/*jshint maxcomplexity:25*/
			var allowed, curVal, newVal, step,
				index = $( event.target ).data( "ui-slider-handle-index" );

			switch ( event.keyCode ) {
				case $.ui.keyCode.HOME:
				case $.ui.keyCode.END:
				case $.ui.keyCode.PAGE_UP:
				case $.ui.keyCode.PAGE_DOWN:
				case $.ui.keyCode.UP:
				case $.ui.keyCode.RIGHT:
				case $.ui.keyCode.DOWN:
				case $.ui.keyCode.LEFT:
					event.preventDefault();
					if ( !this._keySliding ) {
						this._keySliding = true;
						$( event.target ).addClass( "ui-state-active" );
						allowed = this._start( event, index );
						if ( allowed === false ) {
							return;
						}
					}
					break;
			}

			step = this.options.step;
			if ( this.options.values && this.options.values.length ) {
				curVal = newVal = this.values( index );
			} else {
				curVal = newVal = this.value();
			}

			switch ( event.keyCode ) {
				case $.ui.keyCode.HOME:
					newVal = this._valueMin();
					break;
				case $.ui.keyCode.END:
					newVal = this._valueMax();
					break;
				case $.ui.keyCode.PAGE_UP:
					newVal = this._trimAlignValue( curVal + ( (this._valueMax() - this._valueMin()) / numPages ) );
					break;
				case $.ui.keyCode.PAGE_DOWN:
					newVal = this._trimAlignValue( curVal - ( (this._valueMax() - this._valueMin()) / numPages ) );
					break;
				case $.ui.keyCode.UP:
				case $.ui.keyCode.RIGHT:
					if ( curVal === this._valueMax() ) {
						return;
					}
					newVal = this._trimAlignValue( curVal + step );
					break;
				case $.ui.keyCode.DOWN:
				case $.ui.keyCode.LEFT:
					if ( curVal === this._valueMin() ) {
						return;
					}
					newVal = this._trimAlignValue( curVal - step );
					break;
			}

			this._slide( event, index, newVal );
		},
		click: function( event ) {
			event.preventDefault();
		},
		keyup: function( event ) {
			var index = $( event.target ).data( "ui-slider-handle-index" );

			if ( this._keySliding ) {
				this._keySliding = false;
				this._stop( event, index );
				this._change( event, index );
				$( event.target ).removeClass( "ui-state-active" );
			}
		}
	}

});

}(jQuery));
(function( $ ) {

function modifier( fn ) {
	return function() {
		var previous = this.element.val();
		fn.apply( this, arguments );
		this._refresh();
		if ( previous !== this.element.val() ) {
			this._trigger( "change" );
		}
	};
}

$.widget( "ui.spinner", {
	version: "1.10.1",
	defaultElement: "<input>",
	widgetEventPrefix: "spin",
	options: {
		culture: null,
		icons: {
			down: "ui-icon-triangle-1-s",
			up: "ui-icon-triangle-1-n"
		},
		incremental: true,
		max: null,
		min: null,
		numberFormat: null,
		page: 10,
		step: 1,

		change: null,
		spin: null,
		start: null,
		stop: null
	},

	_create: function() {
		// handle string values that need to be parsed
		this._setOption( "max", this.options.max );
		this._setOption( "min", this.options.min );
		this._setOption( "step", this.options.step );

		// format the value, but don't constrain
		this._value( this.element.val(), true );

		this._draw();
		this._on( this._events );
		this._refresh();

		// turning off autocomplete prevents the browser from remembering the
		// value when navigating through history, so we re-enable autocomplete
		// if the page is unloaded before the widget is destroyed. #7790
		this._on( this.window, {
			beforeunload: function() {
				this.element.removeAttr( "autocomplete" );
			}
		});
	},

	_getCreateOptions: function() {
		var options = {},
			element = this.element;

		$.each( [ "min", "max", "step" ], function( i, option ) {
			var value = element.attr( option );
			if ( value !== undefined && value.length ) {
				options[ option ] = value;
			}
		});

		return options;
	},

	_events: {
		keydown: function( event ) {
			if ( this._start( event ) && this._keydown( event ) ) {
				event.preventDefault();
			}
		},
		keyup: "_stop",
		focus: function() {
			this.previous = this.element.val();
		},
		blur: function( event ) {
			if ( this.cancelBlur ) {
				delete this.cancelBlur;
				return;
			}

			this._refresh();
			if ( this.previous !== this.element.val() ) {
				this._trigger( "change", event );
			}
		},
		mousewheel: function( event, delta ) {
			if ( !delta ) {
				return;
			}
			if ( !this.spinning && !this._start( event ) ) {
				return false;
			}

			this._spin( (delta > 0 ? 1 : -1) * this.options.step, event );
			clearTimeout( this.mousewheelTimer );
			this.mousewheelTimer = this._delay(function() {
				if ( this.spinning ) {
					this._stop( event );
				}
			}, 100 );
			event.preventDefault();
		},
		"mousedown .ui-spinner-button": function( event ) {
			var previous;

			// We never want the buttons to have focus; whenever the user is
			// interacting with the spinner, the focus should be on the input.
			// If the input is focused then this.previous is properly set from
			// when the input first received focus. If the input is not focused
			// then we need to set this.previous based on the value before spinning.
			previous = this.element[0] === this.document[0].activeElement ?
				this.previous : this.element.val();
			function checkFocus() {
				var isActive = this.element[0] === this.document[0].activeElement;
				if ( !isActive ) {
					this.element.focus();
					this.previous = previous;
					// support: IE
					// IE sets focus asynchronously, so we need to check if focus
					// moved off of the input because the user clicked on the button.
					this._delay(function() {
						this.previous = previous;
					});
				}
			}

			// ensure focus is on (or stays on) the text field
			event.preventDefault();
			checkFocus.call( this );

			// support: IE
			// IE doesn't prevent moving focus even with event.preventDefault()
			// so we set a flag to know when we should ignore the blur event
			// and check (again) if focus moved off of the input.
			this.cancelBlur = true;
			this._delay(function() {
				delete this.cancelBlur;
				checkFocus.call( this );
			});

			if ( this._start( event ) === false ) {
				return;
			}

			this._repeat( null, $( event.currentTarget ).hasClass( "ui-spinner-up" ) ? 1 : -1, event );
		},
		"mouseup .ui-spinner-button": "_stop",
		"mouseenter .ui-spinner-button": function( event ) {
			// button will add ui-state-active if mouse was down while mouseleave and kept down
			if ( !$( event.currentTarget ).hasClass( "ui-state-active" ) ) {
				return;
			}

			if ( this._start( event ) === false ) {
				return false;
			}
			this._repeat( null, $( event.currentTarget ).hasClass( "ui-spinner-up" ) ? 1 : -1, event );
		},
		// TODO: do we really want to consider this a stop?
		// shouldn't we just stop the repeater and wait until mouseup before
		// we trigger the stop event?
		"mouseleave .ui-spinner-button": "_stop"
	},

	_draw: function() {
		var uiSpinner = this.uiSpinner = this.element
			.addClass( "ui-spinner-input" )
			.attr( "autocomplete", "off" )
			.wrap( this._uiSpinnerHtml() )
			.parent()
				// add buttons
				.append( this._buttonHtml() );

		this.element.attr( "role", "spinbutton" );

		// button bindings
		this.buttons = uiSpinner.find( ".ui-spinner-button" )
			.attr( "tabIndex", -1 )
			.button()
			.removeClass( "ui-corner-all" );

		// IE 6 doesn't understand height: 50% for the buttons
		// unless the wrapper has an explicit height
		if ( this.buttons.height() > Math.ceil( uiSpinner.height() * 0.5 ) &&
				uiSpinner.height() > 0 ) {
			uiSpinner.height( uiSpinner.height() );
		}

		// disable spinner if element was already disabled
		if ( this.options.disabled ) {
			this.disable();
		}
	},

	_keydown: function( event ) {
		var options = this.options,
			keyCode = $.ui.keyCode;

		switch ( event.keyCode ) {
		case keyCode.UP:
			this._repeat( null, 1, event );
			return true;
		case keyCode.DOWN:
			this._repeat( null, -1, event );
			return true;
		case keyCode.PAGE_UP:
			this._repeat( null, options.page, event );
			return true;
		case keyCode.PAGE_DOWN:
			this._repeat( null, -options.page, event );
			return true;
		}

		return false;
	},

	_uiSpinnerHtml: function() {
		return "<span class='ui-spinner ui-widget ui-widget-content ui-corner-all'></span>";
	},

	_buttonHtml: function() {
		return "" +
			"<a class='ui-spinner-button ui-spinner-up ui-corner-tr'>" +
				"<span class='ui-icon " + this.options.icons.up + "'>&#9650;</span>" +
			"</a>" +
			"<a class='ui-spinner-button ui-spinner-down ui-corner-br'>" +
				"<span class='ui-icon " + this.options.icons.down + "'>&#9660;</span>" +
			"</a>";
	},

	_start: function( event ) {
		if ( !this.spinning && this._trigger( "start", event ) === false ) {
			return false;
		}

		if ( !this.counter ) {
			this.counter = 1;
		}
		this.spinning = true;
		return true;
	},

	_repeat: function( i, steps, event ) {
		i = i || 500;

		clearTimeout( this.timer );
		this.timer = this._delay(function() {
			this._repeat( 40, steps, event );
		}, i );

		this._spin( steps * this.options.step, event );
	},

	_spin: function( step, event ) {
		var value = this.value() || 0;

		if ( !this.counter ) {
			this.counter = 1;
		}

		value = this._adjustValue( value + step * this._increment( this.counter ) );

		if ( !this.spinning || this._trigger( "spin", event, { value: value } ) !== false) {
			this._value( value );
			this.counter++;
		}
	},

	_increment: function( i ) {
		var incremental = this.options.incremental;

		if ( incremental ) {
			return $.isFunction( incremental ) ?
				incremental( i ) :
				Math.floor( i*i*i/50000 - i*i/500 + 17*i/200 + 1 );
		}

		return 1;
	},

	_precision: function() {
		var precision = this._precisionOf( this.options.step );
		if ( this.options.min !== null ) {
			precision = Math.max( precision, this._precisionOf( this.options.min ) );
		}
		return precision;
	},

	_precisionOf: function( num ) {
		var str = num.toString(),
			decimal = str.indexOf( "." );
		return decimal === -1 ? 0 : str.length - decimal - 1;
	},

	_adjustValue: function( value ) {
		var base, aboveMin,
			options = this.options;

		// make sure we're at a valid step
		// - find out where we are relative to the base (min or 0)
		base = options.min !== null ? options.min : 0;
		aboveMin = value - base;
		// - round to the nearest step
		aboveMin = Math.round(aboveMin / options.step) * options.step;
		// - rounding is based on 0, so adjust back to our base
		value = base + aboveMin;

		// fix precision from bad JS floating point math
		value = parseFloat( value.toFixed( this._precision() ) );

		// clamp the value
		if ( options.max !== null && value > options.max) {
			return options.max;
		}
		if ( options.min !== null && value < options.min ) {
			return options.min;
		}

		return value;
	},

	_stop: function( event ) {
		if ( !this.spinning ) {
			return;
		}

		clearTimeout( this.timer );
		clearTimeout( this.mousewheelTimer );
		this.counter = 0;
		this.spinning = false;
		this._trigger( "stop", event );
	},

	_setOption: function( key, value ) {
		if ( key === "culture" || key === "numberFormat" ) {
			var prevValue = this._parse( this.element.val() );
			this.options[ key ] = value;
			this.element.val( this._format( prevValue ) );
			return;
		}

		if ( key === "max" || key === "min" || key === "step" ) {
			if ( typeof value === "string" ) {
				value = this._parse( value );
			}
		}
		if ( key === "icons" ) {
			this.buttons.first().find( ".ui-icon" )
				.removeClass( this.options.icons.up )
				.addClass( value.up );
			this.buttons.last().find( ".ui-icon" )
				.removeClass( this.options.icons.down )
				.addClass( value.down );
		}

		this._super( key, value );

		if ( key === "disabled" ) {
			if ( value ) {
				this.element.prop( "disabled", true );
				this.buttons.button( "disable" );
			} else {
				this.element.prop( "disabled", false );
				this.buttons.button( "enable" );
			}
		}
	},

	_setOptions: modifier(function( options ) {
		this._super( options );
		this._value( this.element.val() );
	}),

	_parse: function( val ) {
		if ( typeof val === "string" && val !== "" ) {
			val = window.Globalize && this.options.numberFormat ?
				Globalize.parseFloat( val, 10, this.options.culture ) : +val;
		}
		return val === "" || isNaN( val ) ? null : val;
	},

	_format: function( value ) {
		if ( value === "" ) {
			return "";
		}
		return window.Globalize && this.options.numberFormat ?
			Globalize.format( value, this.options.numberFormat, this.options.culture ) :
			value;
	},

	_refresh: function() {
		this.element.attr({
			"aria-valuemin": this.options.min,
			"aria-valuemax": this.options.max,
			// TODO: what should we do with values that can't be parsed?
			"aria-valuenow": this._parse( this.element.val() )
		});
	},

	// update the value without triggering change
	_value: function( value, allowAny ) {
		var parsed;
		if ( value !== "" ) {
			parsed = this._parse( value );
			if ( parsed !== null ) {
				if ( !allowAny ) {
					parsed = this._adjustValue( parsed );
				}
				value = this._format( parsed );
			}
		}
		this.element.val( value );
		this._refresh();
	},

	_destroy: function() {
		this.element
			.removeClass( "ui-spinner-input" )
			.prop( "disabled", false )
			.removeAttr( "autocomplete" )
			.removeAttr( "role" )
			.removeAttr( "aria-valuemin" )
			.removeAttr( "aria-valuemax" )
			.removeAttr( "aria-valuenow" );
		this.uiSpinner.replaceWith( this.element );
	},

	stepUp: modifier(function( steps ) {
		this._stepUp( steps );
	}),
	_stepUp: function( steps ) {
		if ( this._start() ) {
			this._spin( (steps || 1) * this.options.step );
			this._stop();
		}
	},

	stepDown: modifier(function( steps ) {
		this._stepDown( steps );
	}),
	_stepDown: function( steps ) {
		if ( this._start() ) {
			this._spin( (steps || 1) * -this.options.step );
			this._stop();
		}
	},

	pageUp: modifier(function( pages ) {
		this._stepUp( (pages || 1) * this.options.page );
	}),

	pageDown: modifier(function( pages ) {
		this._stepDown( (pages || 1) * this.options.page );
	}),

	value: function( newVal ) {
		if ( !arguments.length ) {
			return this._parse( this.element.val() );
		}
		modifier( this._value ).call( this, newVal );
	},

	widget: function() {
		return this.uiSpinner;
	}
});

}( jQuery ) );
(function( $, undefined ) {

var tabId = 0,
	rhash = /#.*$/;

function getNextTabId() {
	return ++tabId;
}

function isLocal( anchor ) {
	return anchor.hash.length > 1 &&
		decodeURIComponent( anchor.href.replace( rhash, "" ) ) ===
			decodeURIComponent( location.href.replace( rhash, "" ) );
}

$.widget( "ui.tabs", {
	version: "1.10.1",
	delay: 300,
	options: {
		active: null,
		collapsible: false,
		event: "click",
		heightStyle: "content",
		hide: null,
		show: null,

		// callbacks
		activate: null,
		beforeActivate: null,
		beforeLoad: null,
		load: null
	},

	_create: function() {
		var that = this,
			options = this.options;

		this.running = false;

		this.element
			.addClass( "ui-tabs ui-widget ui-widget-content ui-corner-all" )
			.toggleClass( "ui-tabs-collapsible", options.collapsible )
			// Prevent users from focusing disabled tabs via click
			.delegate( ".ui-tabs-nav > li", "mousedown" + this.eventNamespace, function( event ) {
				if ( $( this ).is( ".ui-state-disabled" ) ) {
					event.preventDefault();
				}
			})
			// support: IE <9
			// Preventing the default action in mousedown doesn't prevent IE
			// from focusing the element, so if the anchor gets focused, blur.
			// We don't have to worry about focusing the previously focused
			// element since clicking on a non-focusable element should focus
			// the body anyway.
			.delegate( ".ui-tabs-anchor", "focus" + this.eventNamespace, function() {
				if ( $( this ).closest( "li" ).is( ".ui-state-disabled" ) ) {
					this.blur();
				}
			});

		this._processTabs();
		options.active = this._initialActive();

		// Take disabling tabs via class attribute from HTML
		// into account and update option properly.
		if ( $.isArray( options.disabled ) ) {
			options.disabled = $.unique( options.disabled.concat(
				$.map( this.tabs.filter( ".ui-state-disabled" ), function( li ) {
					return that.tabs.index( li );
				})
			) ).sort();
		}

		// check for length avoids error when initializing empty list
		if ( this.options.active !== false && this.anchors.length ) {
			this.active = this._findActive( options.active );
		} else {
			this.active = $();
		}

		this._refresh();

		if ( this.active.length ) {
			this.load( options.active );
		}
	},

	_initialActive: function() {
		var active = this.options.active,
			collapsible = this.options.collapsible,
			locationHash = location.hash.substring( 1 );

		if ( active === null ) {
			// check the fragment identifier in the URL
			if ( locationHash ) {
				this.tabs.each(function( i, tab ) {
					if ( $( tab ).attr( "aria-controls" ) === locationHash ) {
						active = i;
						return false;
					}
				});
			}

			// check for a tab marked active via a class
			if ( active === null ) {
				active = this.tabs.index( this.tabs.filter( ".ui-tabs-active" ) );
			}

			// no active tab, set to false
			if ( active === null || active === -1 ) {
				active = this.tabs.length ? 0 : false;
			}
		}

		// handle numbers: negative, out of range
		if ( active !== false ) {
			active = this.tabs.index( this.tabs.eq( active ) );
			if ( active === -1 ) {
				active = collapsible ? false : 0;
			}
		}

		// don't allow collapsible: false and active: false
		if ( !collapsible && active === false && this.anchors.length ) {
			active = 0;
		}

		return active;
	},

	_getCreateEventData: function() {
		return {
			tab: this.active,
			panel: !this.active.length ? $() : this._getPanelForTab( this.active )
		};
	},

	_tabKeydown: function( event ) {
		/*jshint maxcomplexity:15*/
		var focusedTab = $( this.document[0].activeElement ).closest( "li" ),
			selectedIndex = this.tabs.index( focusedTab ),
			goingForward = true;

		if ( this._handlePageNav( event ) ) {
			return;
		}

		switch ( event.keyCode ) {
			case $.ui.keyCode.RIGHT:
			case $.ui.keyCode.DOWN:
				selectedIndex++;
				break;
			case $.ui.keyCode.UP:
			case $.ui.keyCode.LEFT:
				goingForward = false;
				selectedIndex--;
				break;
			case $.ui.keyCode.END:
				selectedIndex = this.anchors.length - 1;
				break;
			case $.ui.keyCode.HOME:
				selectedIndex = 0;
				break;
			case $.ui.keyCode.SPACE:
				// Activate only, no collapsing
				event.preventDefault();
				clearTimeout( this.activating );
				this._activate( selectedIndex );
				return;
			case $.ui.keyCode.ENTER:
				// Toggle (cancel delayed activation, allow collapsing)
				event.preventDefault();
				clearTimeout( this.activating );
				// Determine if we should collapse or activate
				this._activate( selectedIndex === this.options.active ? false : selectedIndex );
				return;
			default:
				return;
		}

		// Focus the appropriate tab, based on which key was pressed
		event.preventDefault();
		clearTimeout( this.activating );
		selectedIndex = this._focusNextTab( selectedIndex, goingForward );

		// Navigating with control key will prevent automatic activation
		if ( !event.ctrlKey ) {
			// Update aria-selected immediately so that AT think the tab is already selected.
			// Otherwise AT may confuse the user by stating that they need to activate the tab,
			// but the tab will already be activated by the time the announcement finishes.
			focusedTab.attr( "aria-selected", "false" );
			this.tabs.eq( selectedIndex ).attr( "aria-selected", "true" );

			this.activating = this._delay(function() {
				this.option( "active", selectedIndex );
			}, this.delay );
		}
	},

	_panelKeydown: function( event ) {
		if ( this._handlePageNav( event ) ) {
			return;
		}

		// Ctrl+up moves focus to the current tab
		if ( event.ctrlKey && event.keyCode === $.ui.keyCode.UP ) {
			event.preventDefault();
			this.active.focus();
		}
	},

	// Alt+page up/down moves focus to the previous/next tab (and activates)
	_handlePageNav: function( event ) {
		if ( event.altKey && event.keyCode === $.ui.keyCode.PAGE_UP ) {
			this._activate( this._focusNextTab( this.options.active - 1, false ) );
			return true;
		}
		if ( event.altKey && event.keyCode === $.ui.keyCode.PAGE_DOWN ) {
			this._activate( this._focusNextTab( this.options.active + 1, true ) );
			return true;
		}
	},

	_findNextTab: function( index, goingForward ) {
		var lastTabIndex = this.tabs.length - 1;

		function constrain() {
			if ( index > lastTabIndex ) {
				index = 0;
			}
			if ( index < 0 ) {
				index = lastTabIndex;
			}
			return index;
		}

		while ( $.inArray( constrain(), this.options.disabled ) !== -1 ) {
			index = goingForward ? index + 1 : index - 1;
		}

		return index;
	},

	_focusNextTab: function( index, goingForward ) {
		index = this._findNextTab( index, goingForward );
		this.tabs.eq( index ).focus();
		return index;
	},

	_setOption: function( key, value ) {
		if ( key === "active" ) {
			// _activate() will handle invalid values and update this.options
			this._activate( value );
			return;
		}

		if ( key === "disabled" ) {
			// don't use the widget factory's disabled handling
			this._setupDisabled( value );
			return;
		}

		this._super( key, value);

		if ( key === "collapsible" ) {
			this.element.toggleClass( "ui-tabs-collapsible", value );
			// Setting collapsible: false while collapsed; open first panel
			if ( !value && this.options.active === false ) {
				this._activate( 0 );
			}
		}

		if ( key === "event" ) {
			this._setupEvents( value );
		}

		if ( key === "heightStyle" ) {
			this._setupHeightStyle( value );
		}
	},

	_tabId: function( tab ) {
		return tab.attr( "aria-controls" ) || "ui-tabs-" + getNextTabId();
	},

	_sanitizeSelector: function( hash ) {
		return hash ? hash.replace( /[!"$%&'()*+,.\/:;<=>?@\[\]\^`{|}~]/g, "\\$&" ) : "";
	},

	refresh: function() {
		var options = this.options,
			lis = this.tablist.children( ":has(a[href])" );

		// get disabled tabs from class attribute from HTML
		// this will get converted to a boolean if needed in _refresh()
		options.disabled = $.map( lis.filter( ".ui-state-disabled" ), function( tab ) {
			return lis.index( tab );
		});

		this._processTabs();

		// was collapsed or no tabs
		if ( options.active === false || !this.anchors.length ) {
			options.active = false;
			this.active = $();
		// was active, but active tab is gone
		} else if ( this.active.length && !$.contains( this.tablist[ 0 ], this.active[ 0 ] ) ) {
			// all remaining tabs are disabled
			if ( this.tabs.length === options.disabled.length ) {
				options.active = false;
				this.active = $();
			// activate previous tab
			} else {
				this._activate( this._findNextTab( Math.max( 0, options.active - 1 ), false ) );
			}
		// was active, active tab still exists
		} else {
			// make sure active index is correct
			options.active = this.tabs.index( this.active );
		}

		this._refresh();
	},

	_refresh: function() {
		this._setupDisabled( this.options.disabled );
		this._setupEvents( this.options.event );
		this._setupHeightStyle( this.options.heightStyle );

		this.tabs.not( this.active ).attr({
			"aria-selected": "false",
			tabIndex: -1
		});
		this.panels.not( this._getPanelForTab( this.active ) )
			.hide()
			.attr({
				"aria-expanded": "false",
				"aria-hidden": "true"
			});

		// Make sure one tab is in the tab order
		if ( !this.active.length ) {
			this.tabs.eq( 0 ).attr( "tabIndex", 0 );
		} else {
			this.active
				.addClass( "ui-tabs-active ui-state-active" )
				.attr({
					"aria-selected": "true",
					tabIndex: 0
				});
			this._getPanelForTab( this.active )
				.show()
				.attr({
					"aria-expanded": "true",
					"aria-hidden": "false"
				});
		}
	},

	_processTabs: function() {
		var that = this;

		this.tablist = this._getList()
			.addClass( "ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all" )
			.attr( "role", "tablist" );

		this.tabs = this.tablist.find( "> li:has(a[href])" )
			.addClass( "ui-state-default ui-corner-top" )
			.attr({
				role: "tab",
				tabIndex: -1
			});

		this.anchors = this.tabs.map(function() {
				return $( "a", this )[ 0 ];
			})
			.addClass( "ui-tabs-anchor" )
			.attr({
				role: "presentation",
				tabIndex: -1
			});

		this.panels = $();

		this.anchors.each(function( i, anchor ) {
			var selector, panel, panelId,
				anchorId = $( anchor ).uniqueId().attr( "id" ),
				tab = $( anchor ).closest( "li" ),
				originalAriaControls = tab.attr( "aria-controls" );

			// inline tab
			if ( isLocal( anchor ) ) {
				selector = anchor.hash;
				panel = that.element.find( that._sanitizeSelector( selector ) );
			// remote tab
			} else {
				panelId = that._tabId( tab );
				selector = "#" + panelId;
				panel = that.element.find( selector );
				if ( !panel.length ) {
					panel = that._createPanel( panelId );
					panel.insertAfter( that.panels[ i - 1 ] || that.tablist );
				}
				panel.attr( "aria-live", "polite" );
			}

			if ( panel.length) {
				that.panels = that.panels.add( panel );
			}
			if ( originalAriaControls ) {
				tab.data( "ui-tabs-aria-controls", originalAriaControls );
			}
			tab.attr({
				"aria-controls": selector.substring( 1 ),
				"aria-labelledby": anchorId
			});
			panel.attr( "aria-labelledby", anchorId );
		});

		this.panels
			.addClass( "ui-tabs-panel ui-widget-content ui-corner-bottom" )
			.attr( "role", "tabpanel" );
	},

	// allow overriding how to find the list for rare usage scenarios (#7715)
	_getList: function() {
		return this.element.find( "ol,ul" ).eq( 0 );
	},

	_createPanel: function( id ) {
		return $( "<div>" )
			.attr( "id", id )
			.addClass( "ui-tabs-panel ui-widget-content ui-corner-bottom" )
			.data( "ui-tabs-destroy", true );
	},

	_setupDisabled: function( disabled ) {
		if ( $.isArray( disabled ) ) {
			if ( !disabled.length ) {
				disabled = false;
			} else if ( disabled.length === this.anchors.length ) {
				disabled = true;
			}
		}

		// disable tabs
		for ( var i = 0, li; ( li = this.tabs[ i ] ); i++ ) {
			if ( disabled === true || $.inArray( i, disabled ) !== -1 ) {
				$( li )
					.addClass( "ui-state-disabled" )
					.attr( "aria-disabled", "true" );
			} else {
				$( li )
					.removeClass( "ui-state-disabled" )
					.removeAttr( "aria-disabled" );
			}
		}

		this.options.disabled = disabled;
	},

	_setupEvents: function( event ) {
		var events = {
			click: function( event ) {
				event.preventDefault();
			}
		};
		if ( event ) {
			$.each( event.split(" "), function( index, eventName ) {
				events[ eventName ] = "_eventHandler";
			});
		}

		this._off( this.anchors.add( this.tabs ).add( this.panels ) );
		this._on( this.anchors, events );
		this._on( this.tabs, { keydown: "_tabKeydown" } );
		this._on( this.panels, { keydown: "_panelKeydown" } );

		this._focusable( this.tabs );
		this._hoverable( this.tabs );
	},

	_setupHeightStyle: function( heightStyle ) {
		var maxHeight,
			parent = this.element.parent();

		if ( heightStyle === "fill" ) {
			maxHeight = parent.height();
			maxHeight -= this.element.outerHeight() - this.element.height();

			this.element.siblings( ":visible" ).each(function() {
				var elem = $( this ),
					position = elem.css( "position" );

				if ( position === "absolute" || position === "fixed" ) {
					return;
				}
				maxHeight -= elem.outerHeight( true );
			});

			this.element.children().not( this.panels ).each(function() {
				maxHeight -= $( this ).outerHeight( true );
			});

			this.panels.each(function() {
				$( this ).height( Math.max( 0, maxHeight -
					$( this ).innerHeight() + $( this ).height() ) );
			})
			.css( "overflow", "auto" );
		} else if ( heightStyle === "auto" ) {
			maxHeight = 0;
			this.panels.each(function() {
				maxHeight = Math.max( maxHeight, $( this ).height( "" ).height() );
			}).height( maxHeight );
		}
	},

	_eventHandler: function( event ) {
		var options = this.options,
			active = this.active,
			anchor = $( event.currentTarget ),
			tab = anchor.closest( "li" ),
			clickedIsActive = tab[ 0 ] === active[ 0 ],
			collapsing = clickedIsActive && options.collapsible,
			toShow = collapsing ? $() : this._getPanelForTab( tab ),
			toHide = !active.length ? $() : this._getPanelForTab( active ),
			eventData = {
				oldTab: active,
				oldPanel: toHide,
				newTab: collapsing ? $() : tab,
				newPanel: toShow
			};

		event.preventDefault();

		if ( tab.hasClass( "ui-state-disabled" ) ||
				// tab is already loading
				tab.hasClass( "ui-tabs-loading" ) ||
				// can't switch durning an animation
				this.running ||
				// click on active header, but not collapsible
				( clickedIsActive && !options.collapsible ) ||
				// allow canceling activation
				( this._trigger( "beforeActivate", event, eventData ) === false ) ) {
			return;
		}

		options.active = collapsing ? false : this.tabs.index( tab );

		this.active = clickedIsActive ? $() : tab;
		if ( this.xhr ) {
			this.xhr.abort();
		}

		if ( !toHide.length && !toShow.length ) {
			$.error( "jQuery UI Tabs: Mismatching fragment identifier." );
		}

		if ( toShow.length ) {
			this.load( this.tabs.index( tab ), event );
		}
		this._toggle( event, eventData );
	},

	// handles show/hide for selecting tabs
	_toggle: function( event, eventData ) {
		var that = this,
			toShow = eventData.newPanel,
			toHide = eventData.oldPanel;

		this.running = true;

		function complete() {
			that.running = false;
			that._trigger( "activate", event, eventData );
		}

		function show() {
			eventData.newTab.closest( "li" ).addClass( "ui-tabs-active ui-state-active" );

			if ( toShow.length && that.options.show ) {
				that._show( toShow, that.options.show, complete );
			} else {
				toShow.show();
				complete();
			}
		}

		// start out by hiding, then showing, then completing
		if ( toHide.length && this.options.hide ) {
			this._hide( toHide, this.options.hide, function() {
				eventData.oldTab.closest( "li" ).removeClass( "ui-tabs-active ui-state-active" );
				show();
			});
		} else {
			eventData.oldTab.closest( "li" ).removeClass( "ui-tabs-active ui-state-active" );
			toHide.hide();
			show();
		}

		toHide.attr({
			"aria-expanded": "false",
			"aria-hidden": "true"
		});
		eventData.oldTab.attr( "aria-selected", "false" );
		// If we're switching tabs, remove the old tab from the tab order.
		// If we're opening from collapsed state, remove the previous tab from the tab order.
		// If we're collapsing, then keep the collapsing tab in the tab order.
		if ( toShow.length && toHide.length ) {
			eventData.oldTab.attr( "tabIndex", -1 );
		} else if ( toShow.length ) {
			this.tabs.filter(function() {
				return $( this ).attr( "tabIndex" ) === 0;
			})
			.attr( "tabIndex", -1 );
		}

		toShow.attr({
			"aria-expanded": "true",
			"aria-hidden": "false"
		});
		eventData.newTab.attr({
			"aria-selected": "true",
			tabIndex: 0
		});
	},

	_activate: function( index ) {
		var anchor,
			active = this._findActive( index );

		// trying to activate the already active panel
		if ( active[ 0 ] === this.active[ 0 ] ) {
			return;
		}

		// trying to collapse, simulate a click on the current active header
		if ( !active.length ) {
			active = this.active;
		}

		anchor = active.find( ".ui-tabs-anchor" )[ 0 ];
		this._eventHandler({
			target: anchor,
			currentTarget: anchor,
			preventDefault: $.noop
		});
	},

	_findActive: function( index ) {
		return index === false ? $() : this.tabs.eq( index );
	},

	_getIndex: function( index ) {
		// meta-function to give users option to provide a href string instead of a numerical index.
		if ( typeof index === "string" ) {
			index = this.anchors.index( this.anchors.filter( "[href$='" + index + "']" ) );
		}

		return index;
	},

	_destroy: function() {
		if ( this.xhr ) {
			this.xhr.abort();
		}

		this.element.removeClass( "ui-tabs ui-widget ui-widget-content ui-corner-all ui-tabs-collapsible" );

		this.tablist
			.removeClass( "ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all" )
			.removeAttr( "role" );

		this.anchors
			.removeClass( "ui-tabs-anchor" )
			.removeAttr( "role" )
			.removeAttr( "tabIndex" )
			.removeUniqueId();

		this.tabs.add( this.panels ).each(function() {
			if ( $.data( this, "ui-tabs-destroy" ) ) {
				$( this ).remove();
			} else {
				$( this )
					.removeClass( "ui-state-default ui-state-active ui-state-disabled " +
						"ui-corner-top ui-corner-bottom ui-widget-content ui-tabs-active ui-tabs-panel" )
					.removeAttr( "tabIndex" )
					.removeAttr( "aria-live" )
					.removeAttr( "aria-busy" )
					.removeAttr( "aria-selected" )
					.removeAttr( "aria-labelledby" )
					.removeAttr( "aria-hidden" )
					.removeAttr( "aria-expanded" )
					.removeAttr( "role" );
			}
		});

		this.tabs.each(function() {
			var li = $( this ),
				prev = li.data( "ui-tabs-aria-controls" );
			if ( prev ) {
				li
					.attr( "aria-controls", prev )
					.removeData( "ui-tabs-aria-controls" );
			} else {
				li.removeAttr( "aria-controls" );
			}
		});

		this.panels.show();

		if ( this.options.heightStyle !== "content" ) {
			this.panels.css( "height", "" );
		}
	},

	enable: function( index ) {
		var disabled = this.options.disabled;
		if ( disabled === false ) {
			return;
		}

		if ( index === undefined ) {
			disabled = false;
		} else {
			index = this._getIndex( index );
			if ( $.isArray( disabled ) ) {
				disabled = $.map( disabled, function( num ) {
					return num !== index ? num : null;
				});
			} else {
				disabled = $.map( this.tabs, function( li, num ) {
					return num !== index ? num : null;
				});
			}
		}
		this._setupDisabled( disabled );
	},

	disable: function( index ) {
		var disabled = this.options.disabled;
		if ( disabled === true ) {
			return;
		}

		if ( index === undefined ) {
			disabled = true;
		} else {
			index = this._getIndex( index );
			if ( $.inArray( index, disabled ) !== -1 ) {
				return;
			}
			if ( $.isArray( disabled ) ) {
				disabled = $.merge( [ index ], disabled ).sort();
			} else {
				disabled = [ index ];
			}
		}
		this._setupDisabled( disabled );
	},

	load: function( index, event ) {
		index = this._getIndex( index );
		var that = this,
			tab = this.tabs.eq( index ),
			anchor = tab.find( ".ui-tabs-anchor" ),
			panel = this._getPanelForTab( tab ),
			eventData = {
				tab: tab,
				panel: panel
			};

		// not remote
		if ( isLocal( anchor[ 0 ] ) ) {
			return;
		}

		this.xhr = $.ajax( this._ajaxSettings( anchor, event, eventData ) );

		// support: jQuery <1.8
		// jQuery <1.8 returns false if the request is canceled in beforeSend,
		// but as of 1.8, $.ajax() always returns a jqXHR object.
		if ( this.xhr && this.xhr.statusText !== "canceled" ) {
			tab.addClass( "ui-tabs-loading" );
			panel.attr( "aria-busy", "true" );

			this.xhr
				.success(function( response ) {
					// support: jQuery <1.8
					// http://bugs.jquery.com/ticket/11778
					setTimeout(function() {
						panel.html( response );
						that._trigger( "load", event, eventData );
					}, 1 );
				})
				.complete(function( jqXHR, status ) {
					// support: jQuery <1.8
					// http://bugs.jquery.com/ticket/11778
					setTimeout(function() {
						if ( status === "abort" ) {
							that.panels.stop( false, true );
						}

						tab.removeClass( "ui-tabs-loading" );
						panel.removeAttr( "aria-busy" );

						if ( jqXHR === that.xhr ) {
							delete that.xhr;
						}
					}, 1 );
				});
		}
	},

	_ajaxSettings: function( anchor, event, eventData ) {
		var that = this;
		return {
			url: anchor.attr( "href" ),
			beforeSend: function( jqXHR, settings ) {
				return that._trigger( "beforeLoad", event,
					$.extend( { jqXHR : jqXHR, ajaxSettings: settings }, eventData ) );
			}
		};
	},

	_getPanelForTab: function( tab ) {
		var id = $( tab ).attr( "aria-controls" );
		return this.element.find( this._sanitizeSelector( "#" + id ) );
	}
});

})( jQuery );
(function( $ ) {

var increments = 0;

function addDescribedBy( elem, id ) {
	var describedby = (elem.attr( "aria-describedby" ) || "").split( /\s+/ );
	describedby.push( id );
	elem
		.data( "ui-tooltip-id", id )
		.attr( "aria-describedby", $.trim( describedby.join( " " ) ) );
}

function removeDescribedBy( elem ) {
	var id = elem.data( "ui-tooltip-id" ),
		describedby = (elem.attr( "aria-describedby" ) || "").split( /\s+/ ),
		index = $.inArray( id, describedby );
	if ( index !== -1 ) {
		describedby.splice( index, 1 );
	}

	elem.removeData( "ui-tooltip-id" );
	describedby = $.trim( describedby.join( " " ) );
	if ( describedby ) {
		elem.attr( "aria-describedby", describedby );
	} else {
		elem.removeAttr( "aria-describedby" );
	}
}

$.widget( "ui.tooltip", {
	version: "1.10.1",
	options: {
		content: function() {
			// support: IE<9, Opera in jQuery <1.7
			// .text() can't accept undefined, so coerce to a string
			var title = $( this ).attr( "title" ) || "";
			// Escape title, since we're going from an attribute to raw HTML
			return $( "<a>" ).text( title ).html();
		},
		hide: true,
		// Disabled elements have inconsistent behavior across browsers (#8661)
		items: "[title]:not([disabled])",
		position: {
			my: "left top+15",
			at: "left bottom",
			collision: "flipfit flip"
		},
		show: true,
		tooltipClass: null,
		track: false,

		// callbacks
		close: null,
		open: null
	},

	_create: function() {
		this._on({
			mouseover: "open",
			focusin: "open"
		});

		// IDs of generated tooltips, needed for destroy
		this.tooltips = {};
		// IDs of parent tooltips where we removed the title attribute
		this.parents = {};

		if ( this.options.disabled ) {
			this._disable();
		}
	},

	_setOption: function( key, value ) {
		var that = this;

		if ( key === "disabled" ) {
			this[ value ? "_disable" : "_enable" ]();
			this.options[ key ] = value;
			// disable element style changes
			return;
		}

		this._super( key, value );

		if ( key === "content" ) {
			$.each( this.tooltips, function( id, element ) {
				that._updateContent( element );
			});
		}
	},

	_disable: function() {
		var that = this;

		// close open tooltips
		$.each( this.tooltips, function( id, element ) {
			var event = $.Event( "blur" );
			event.target = event.currentTarget = element[0];
			that.close( event, true );
		});

		// remove title attributes to prevent native tooltips
		this.element.find( this.options.items ).addBack().each(function() {
			var element = $( this );
			if ( element.is( "[title]" ) ) {
				element
					.data( "ui-tooltip-title", element.attr( "title" ) )
					.attr( "title", "" );
			}
		});
	},

	_enable: function() {
		// restore title attributes
		this.element.find( this.options.items ).addBack().each(function() {
			var element = $( this );
			if ( element.data( "ui-tooltip-title" ) ) {
				element.attr( "title", element.data( "ui-tooltip-title" ) );
			}
		});
	},

	open: function( event ) {
		var that = this,
			target = $( event ? event.target : this.element )
				// we need closest here due to mouseover bubbling,
				// but always pointing at the same event target
				.closest( this.options.items );

		// No element to show a tooltip for or the tooltip is already open
		if ( !target.length || target.data( "ui-tooltip-id" ) ) {
			return;
		}

		if ( target.attr( "title" ) ) {
			target.data( "ui-tooltip-title", target.attr( "title" ) );
		}

		target.data( "ui-tooltip-open", true );

		// kill parent tooltips, custom or native, for hover
		if ( event && event.type === "mouseover" ) {
			target.parents().each(function() {
				var parent = $( this ),
					blurEvent;
				if ( parent.data( "ui-tooltip-open" ) ) {
					blurEvent = $.Event( "blur" );
					blurEvent.target = blurEvent.currentTarget = this;
					that.close( blurEvent, true );
				}
				if ( parent.attr( "title" ) ) {
					parent.uniqueId();
					that.parents[ this.id ] = {
						element: this,
						title: parent.attr( "title" )
					};
					parent.attr( "title", "" );
				}
			});
		}

		this._updateContent( target, event );
	},

	_updateContent: function( target, event ) {
		var content,
			contentOption = this.options.content,
			that = this,
			eventType = event ? event.type : null;

		if ( typeof contentOption === "string" ) {
			return this._open( event, target, contentOption );
		}

		content = contentOption.call( target[0], function( response ) {
			// ignore async response if tooltip was closed already
			if ( !target.data( "ui-tooltip-open" ) ) {
				return;
			}
			// IE may instantly serve a cached response for ajax requests
			// delay this call to _open so the other call to _open runs first
			that._delay(function() {
				// jQuery creates a special event for focusin when it doesn't
				// exist natively. To improve performance, the native event
				// object is reused and the type is changed. Therefore, we can't
				// rely on the type being correct after the event finished
				// bubbling, so we set it back to the previous value. (#8740)
				if ( event ) {
					event.type = eventType;
				}
				this._open( event, target, response );
			});
		});
		if ( content ) {
			this._open( event, target, content );
		}
	},

	_open: function( event, target, content ) {
		var tooltip, events, delayedShow,
			positionOption = $.extend( {}, this.options.position );

		if ( !content ) {
			return;
		}

		// Content can be updated multiple times. If the tooltip already
		// exists, then just update the content and bail.
		tooltip = this._find( target );
		if ( tooltip.length ) {
			tooltip.find( ".ui-tooltip-content" ).html( content );
			return;
		}

		// if we have a title, clear it to prevent the native tooltip
		// we have to check first to avoid defining a title if none exists
		// (we don't want to cause an element to start matching [title])
		//
		// We use removeAttr only for key events, to allow IE to export the correct
		// accessible attributes. For mouse events, set to empty string to avoid
		// native tooltip showing up (happens only when removing inside mouseover).
		if ( target.is( "[title]" ) ) {
			if ( event && event.type === "mouseover" ) {
				target.attr( "title", "" );
			} else {
				target.removeAttr( "title" );
			}
		}

		tooltip = this._tooltip( target );
		addDescribedBy( target, tooltip.attr( "id" ) );
		tooltip.find( ".ui-tooltip-content" ).html( content );

		function position( event ) {
			positionOption.of = event;
			if ( tooltip.is( ":hidden" ) ) {
				return;
			}
			tooltip.position( positionOption );
		}
		if ( this.options.track && event && /^mouse/.test( event.type ) ) {
			this._on( this.document, {
				mousemove: position
			});
			// trigger once to override element-relative positioning
			position( event );
		} else {
			tooltip.position( $.extend({
				of: target
			}, this.options.position ) );
		}

		tooltip.hide();

		this._show( tooltip, this.options.show );
		// Handle tracking tooltips that are shown with a delay (#8644). As soon
		// as the tooltip is visible, position the tooltip using the most recent
		// event.
		if ( this.options.show && this.options.show.delay ) {
			delayedShow = this.delayedShow = setInterval(function() {
				if ( tooltip.is( ":visible" ) ) {
					position( positionOption.of );
					clearInterval( delayedShow );
				}
			}, $.fx.interval );
		}

		this._trigger( "open", event, { tooltip: tooltip } );

		events = {
			keyup: function( event ) {
				if ( event.keyCode === $.ui.keyCode.ESCAPE ) {
					var fakeEvent = $.Event(event);
					fakeEvent.currentTarget = target[0];
					this.close( fakeEvent, true );
				}
			},
			remove: function() {
				this._removeTooltip( tooltip );
			}
		};
		if ( !event || event.type === "mouseover" ) {
			events.mouseleave = "close";
		}
		if ( !event || event.type === "focusin" ) {
			events.focusout = "close";
		}
		this._on( true, target, events );
	},

	close: function( event ) {
		var that = this,
			target = $( event ? event.currentTarget : this.element ),
			tooltip = this._find( target );

		// disabling closes the tooltip, so we need to track when we're closing
		// to avoid an infinite loop in case the tooltip becomes disabled on close
		if ( this.closing ) {
			return;
		}

		// Clear the interval for delayed tracking tooltips
		clearInterval( this.delayedShow );

		// only set title if we had one before (see comment in _open())
		if ( target.data( "ui-tooltip-title" ) ) {
			target.attr( "title", target.data( "ui-tooltip-title" ) );
		}

		removeDescribedBy( target );

		tooltip.stop( true );
		this._hide( tooltip, this.options.hide, function() {
			that._removeTooltip( $( this ) );
		});

		target.removeData( "ui-tooltip-open" );
		this._off( target, "mouseleave focusout keyup" );
		// Remove 'remove' binding only on delegated targets
		if ( target[0] !== this.element[0] ) {
			this._off( target, "remove" );
		}
		this._off( this.document, "mousemove" );

		if ( event && event.type === "mouseleave" ) {
			$.each( this.parents, function( id, parent ) {
				$( parent.element ).attr( "title", parent.title );
				delete that.parents[ id ];
			});
		}

		this.closing = true;
		this._trigger( "close", event, { tooltip: tooltip } );
		this.closing = false;
	},

	_tooltip: function( element ) {
		var id = "ui-tooltip-" + increments++,
			tooltip = $( "<div>" )
				.attr({
					id: id,
					role: "tooltip"
				})
				.addClass( "ui-tooltip ui-widget ui-corner-all ui-widget-content " +
					( this.options.tooltipClass || "" ) );
		$( "<div>" )
			.addClass( "ui-tooltip-content" )
			.appendTo( tooltip );
		tooltip.appendTo( this.document[0].body );
		this.tooltips[ id ] = element;
		return tooltip;
	},

	_find: function( target ) {
		var id = target.data( "ui-tooltip-id" );
		return id ? $( "#" + id ) : $();
	},

	_removeTooltip: function( tooltip ) {
		tooltip.remove();
		delete this.tooltips[ tooltip.attr( "id" ) ];
	},

	_destroy: function() {
		var that = this;

		// close open tooltips
		$.each( this.tooltips, function( id, element ) {
			// Delegate to close method to handle common cleanup
			var event = $.Event( "blur" );
			event.target = event.currentTarget = element[0];
			that.close( event, true );

			// Remove immediately; destroying an open tooltip doesn't use the
			// hide animation
			$( "#" + id ).remove();

			// Restore the title
			if ( element.data( "ui-tooltip-title" ) ) {
				element.attr( "title", element.data( "ui-tooltip-title" ) );
				element.removeData( "ui-tooltip-title" );
			}
		});
	}
});

}( jQuery ) );
;(jQuery.effects || (function($, undefined) {

var dataSpace = "ui-effects-";

$.effects = {
	effect: {}
};

/*!
 * jQuery Color Animations v2.1.2
 * https://github.com/jquery/jquery-color
 *
 * Copyright 2013 jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 *
 * Date: Wed Jan 16 08:47:09 2013 -0600
 */
(function( jQuery, undefined ) {

	var stepHooks = "backgroundColor borderBottomColor borderLeftColor borderRightColor borderTopColor color columnRuleColor outlineColor textDecorationColor textEmphasisColor",

	// plusequals test for += 100 -= 100
	rplusequals = /^([\-+])=\s*(\d+\.?\d*)/,
	// a set of RE's that can match strings and generate color tuples.
	stringParsers = [{
			re: /rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*(?:,\s*(\d?(?:\.\d+)?)\s*)?\)/,
			parse: function( execResult ) {
				return [
					execResult[ 1 ],
					execResult[ 2 ],
					execResult[ 3 ],
					execResult[ 4 ]
				];
			}
		}, {
			re: /rgba?\(\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d?(?:\.\d+)?)\s*)?\)/,
			parse: function( execResult ) {
				return [
					execResult[ 1 ] * 2.55,
					execResult[ 2 ] * 2.55,
					execResult[ 3 ] * 2.55,
					execResult[ 4 ]
				];
			}
		}, {
			// this regex ignores A-F because it's compared against an already lowercased string
			re: /#([a-f0-9]{2})([a-f0-9]{2})([a-f0-9]{2})/,
			parse: function( execResult ) {
				return [
					parseInt( execResult[ 1 ], 16 ),
					parseInt( execResult[ 2 ], 16 ),
					parseInt( execResult[ 3 ], 16 )
				];
			}
		}, {
			// this regex ignores A-F because it's compared against an already lowercased string
			re: /#([a-f0-9])([a-f0-9])([a-f0-9])/,
			parse: function( execResult ) {
				return [
					parseInt( execResult[ 1 ] + execResult[ 1 ], 16 ),
					parseInt( execResult[ 2 ] + execResult[ 2 ], 16 ),
					parseInt( execResult[ 3 ] + execResult[ 3 ], 16 )
				];
			}
		}, {
			re: /hsla?\(\s*(\d+(?:\.\d+)?)\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d?(?:\.\d+)?)\s*)?\)/,
			space: "hsla",
			parse: function( execResult ) {
				return [
					execResult[ 1 ],
					execResult[ 2 ] / 100,
					execResult[ 3 ] / 100,
					execResult[ 4 ]
				];
			}
		}],

	// jQuery.Color( )
	color = jQuery.Color = function( color, green, blue, alpha ) {
		return new jQuery.Color.fn.parse( color, green, blue, alpha );
	},
	spaces = {
		rgba: {
			props: {
				red: {
					idx: 0,
					type: "byte"
				},
				green: {
					idx: 1,
					type: "byte"
				},
				blue: {
					idx: 2,
					type: "byte"
				}
			}
		},

		hsla: {
			props: {
				hue: {
					idx: 0,
					type: "degrees"
				},
				saturation: {
					idx: 1,
					type: "percent"
				},
				lightness: {
					idx: 2,
					type: "percent"
				}
			}
		}
	},
	propTypes = {
		"byte": {
			floor: true,
			max: 255
		},
		"percent": {
			max: 1
		},
		"degrees": {
			mod: 360,
			floor: true
		}
	},
	support = color.support = {},

	// element for support tests
	supportElem = jQuery( "<p>" )[ 0 ],

	// colors = jQuery.Color.names
	colors,

	// local aliases of functions called often
	each = jQuery.each;

// determine rgba support immediately
supportElem.style.cssText = "background-color:rgba(1,1,1,.5)";
support.rgba = supportElem.style.backgroundColor.indexOf( "rgba" ) > -1;

// define cache name and alpha properties
// for rgba and hsla spaces
each( spaces, function( spaceName, space ) {
	space.cache = "_" + spaceName;
	space.props.alpha = {
		idx: 3,
		type: "percent",
		def: 1
	};
});

function clamp( value, prop, allowEmpty ) {
	var type = propTypes[ prop.type ] || {};

	if ( value == null ) {
		return (allowEmpty || !prop.def) ? null : prop.def;
	}

	// ~~ is an short way of doing floor for positive numbers
	value = type.floor ? ~~value : parseFloat( value );

	// IE will pass in empty strings as value for alpha,
	// which will hit this case
	if ( isNaN( value ) ) {
		return prop.def;
	}

	if ( type.mod ) {
		// we add mod before modding to make sure that negatives values
		// get converted properly: -10 -> 350
		return (value + type.mod) % type.mod;
	}

	// for now all property types without mod have min and max
	return 0 > value ? 0 : type.max < value ? type.max : value;
}

function stringParse( string ) {
	var inst = color(),
		rgba = inst._rgba = [];

	string = string.toLowerCase();

	each( stringParsers, function( i, parser ) {
		var parsed,
			match = parser.re.exec( string ),
			values = match && parser.parse( match ),
			spaceName = parser.space || "rgba";

		if ( values ) {
			parsed = inst[ spaceName ]( values );

			// if this was an rgba parse the assignment might happen twice
			// oh well....
			inst[ spaces[ spaceName ].cache ] = parsed[ spaces[ spaceName ].cache ];
			rgba = inst._rgba = parsed._rgba;

			// exit each( stringParsers ) here because we matched
			return false;
		}
	});

	// Found a stringParser that handled it
	if ( rgba.length ) {

		// if this came from a parsed string, force "transparent" when alpha is 0
		// chrome, (and maybe others) return "transparent" as rgba(0,0,0,0)
		if ( rgba.join() === "0,0,0,0" ) {
			jQuery.extend( rgba, colors.transparent );
		}
		return inst;
	}

	// named colors
	return colors[ string ];
}

color.fn = jQuery.extend( color.prototype, {
	parse: function( red, green, blue, alpha ) {
		if ( red === undefined ) {
			this._rgba = [ null, null, null, null ];
			return this;
		}
		if ( red.jquery || red.nodeType ) {
			red = jQuery( red ).css( green );
			green = undefined;
		}

		var inst = this,
			type = jQuery.type( red ),
			rgba = this._rgba = [];

		// more than 1 argument specified - assume ( red, green, blue, alpha )
		if ( green !== undefined ) {
			red = [ red, green, blue, alpha ];
			type = "array";
		}

		if ( type === "string" ) {
			return this.parse( stringParse( red ) || colors._default );
		}

		if ( type === "array" ) {
			each( spaces.rgba.props, function( key, prop ) {
				rgba[ prop.idx ] = clamp( red[ prop.idx ], prop );
			});
			return this;
		}

		if ( type === "object" ) {
			if ( red instanceof color ) {
				each( spaces, function( spaceName, space ) {
					if ( red[ space.cache ] ) {
						inst[ space.cache ] = red[ space.cache ].slice();
					}
				});
			} else {
				each( spaces, function( spaceName, space ) {
					var cache = space.cache;
					each( space.props, function( key, prop ) {

						// if the cache doesn't exist, and we know how to convert
						if ( !inst[ cache ] && space.to ) {

							// if the value was null, we don't need to copy it
							// if the key was alpha, we don't need to copy it either
							if ( key === "alpha" || red[ key ] == null ) {
								return;
							}
							inst[ cache ] = space.to( inst._rgba );
						}

						// this is the only case where we allow nulls for ALL properties.
						// call clamp with alwaysAllowEmpty
						inst[ cache ][ prop.idx ] = clamp( red[ key ], prop, true );
					});

					// everything defined but alpha?
					if ( inst[ cache ] && jQuery.inArray( null, inst[ cache ].slice( 0, 3 ) ) < 0 ) {
						// use the default of 1
						inst[ cache ][ 3 ] = 1;
						if ( space.from ) {
							inst._rgba = space.from( inst[ cache ] );
						}
					}
				});
			}
			return this;
		}
	},
	is: function( compare ) {
		var is = color( compare ),
			same = true,
			inst = this;

		each( spaces, function( _, space ) {
			var localCache,
				isCache = is[ space.cache ];
			if (isCache) {
				localCache = inst[ space.cache ] || space.to && space.to( inst._rgba ) || [];
				each( space.props, function( _, prop ) {
					if ( isCache[ prop.idx ] != null ) {
						same = ( isCache[ prop.idx ] === localCache[ prop.idx ] );
						return same;
					}
				});
			}
			return same;
		});
		return same;
	},
	_space: function() {
		var used = [],
			inst = this;
		each( spaces, function( spaceName, space ) {
			if ( inst[ space.cache ] ) {
				used.push( spaceName );
			}
		});
		return used.pop();
	},
	transition: function( other, distance ) {
		var end = color( other ),
			spaceName = end._space(),
			space = spaces[ spaceName ],
			startColor = this.alpha() === 0 ? color( "transparent" ) : this,
			start = startColor[ space.cache ] || space.to( startColor._rgba ),
			result = start.slice();

		end = end[ space.cache ];
		each( space.props, function( key, prop ) {
			var index = prop.idx,
				startValue = start[ index ],
				endValue = end[ index ],
				type = propTypes[ prop.type ] || {};

			// if null, don't override start value
			if ( endValue === null ) {
				return;
			}
			// if null - use end
			if ( startValue === null ) {
				result[ index ] = endValue;
			} else {
				if ( type.mod ) {
					if ( endValue - startValue > type.mod / 2 ) {
						startValue += type.mod;
					} else if ( startValue - endValue > type.mod / 2 ) {
						startValue -= type.mod;
					}
				}
				result[ index ] = clamp( ( endValue - startValue ) * distance + startValue, prop );
			}
		});
		return this[ spaceName ]( result );
	},
	blend: function( opaque ) {
		// if we are already opaque - return ourself
		if ( this._rgba[ 3 ] === 1 ) {
			return this;
		}

		var rgb = this._rgba.slice(),
			a = rgb.pop(),
			blend = color( opaque )._rgba;

		return color( jQuery.map( rgb, function( v, i ) {
			return ( 1 - a ) * blend[ i ] + a * v;
		}));
	},
	toRgbaString: function() {
		var prefix = "rgba(",
			rgba = jQuery.map( this._rgba, function( v, i ) {
				return v == null ? ( i > 2 ? 1 : 0 ) : v;
			});

		if ( rgba[ 3 ] === 1 ) {
			rgba.pop();
			prefix = "rgb(";
		}

		return prefix + rgba.join() + ")";
	},
	toHslaString: function() {
		var prefix = "hsla(",
			hsla = jQuery.map( this.hsla(), function( v, i ) {
				if ( v == null ) {
					v = i > 2 ? 1 : 0;
				}

				// catch 1 and 2
				if ( i && i < 3 ) {
					v = Math.round( v * 100 ) + "%";
				}
				return v;
			});

		if ( hsla[ 3 ] === 1 ) {
			hsla.pop();
			prefix = "hsl(";
		}
		return prefix + hsla.join() + ")";
	},
	toHexString: function( includeAlpha ) {
		var rgba = this._rgba.slice(),
			alpha = rgba.pop();

		if ( includeAlpha ) {
			rgba.push( ~~( alpha * 255 ) );
		}

		return "#" + jQuery.map( rgba, function( v ) {

			// default to 0 when nulls exist
			v = ( v || 0 ).toString( 16 );
			return v.length === 1 ? "0" + v : v;
		}).join("");
	},
	toString: function() {
		return this._rgba[ 3 ] === 0 ? "transparent" : this.toRgbaString();
	}
});
color.fn.parse.prototype = color.fn;

// hsla conversions adapted from:
// https://code.google.com/p/maashaack/source/browse/packages/graphics/trunk/src/graphics/colors/HUE2RGB.as?r=5021

function hue2rgb( p, q, h ) {
	h = ( h + 1 ) % 1;
	if ( h * 6 < 1 ) {
		return p + (q - p) * h * 6;
	}
	if ( h * 2 < 1) {
		return q;
	}
	if ( h * 3 < 2 ) {
		return p + (q - p) * ((2/3) - h) * 6;
	}
	return p;
}

spaces.hsla.to = function ( rgba ) {
	if ( rgba[ 0 ] == null || rgba[ 1 ] == null || rgba[ 2 ] == null ) {
		return [ null, null, null, rgba[ 3 ] ];
	}
	var r = rgba[ 0 ] / 255,
		g = rgba[ 1 ] / 255,
		b = rgba[ 2 ] / 255,
		a = rgba[ 3 ],
		max = Math.max( r, g, b ),
		min = Math.min( r, g, b ),
		diff = max - min,
		add = max + min,
		l = add * 0.5,
		h, s;

	if ( min === max ) {
		h = 0;
	} else if ( r === max ) {
		h = ( 60 * ( g - b ) / diff ) + 360;
	} else if ( g === max ) {
		h = ( 60 * ( b - r ) / diff ) + 120;
	} else {
		h = ( 60 * ( r - g ) / diff ) + 240;
	}

	// chroma (diff) == 0 means greyscale which, by definition, saturation = 0%
	// otherwise, saturation is based on the ratio of chroma (diff) to lightness (add)
	if ( diff === 0 ) {
		s = 0;
	} else if ( l <= 0.5 ) {
		s = diff / add;
	} else {
		s = diff / ( 2 - add );
	}
	return [ Math.round(h) % 360, s, l, a == null ? 1 : a ];
};

spaces.hsla.from = function ( hsla ) {
	if ( hsla[ 0 ] == null || hsla[ 1 ] == null || hsla[ 2 ] == null ) {
		return [ null, null, null, hsla[ 3 ] ];
	}
	var h = hsla[ 0 ] / 360,
		s = hsla[ 1 ],
		l = hsla[ 2 ],
		a = hsla[ 3 ],
		q = l <= 0.5 ? l * ( 1 + s ) : l + s - l * s,
		p = 2 * l - q;

	return [
		Math.round( hue2rgb( p, q, h + ( 1 / 3 ) ) * 255 ),
		Math.round( hue2rgb( p, q, h ) * 255 ),
		Math.round( hue2rgb( p, q, h - ( 1 / 3 ) ) * 255 ),
		a
	];
};


each( spaces, function( spaceName, space ) {
	var props = space.props,
		cache = space.cache,
		to = space.to,
		from = space.from;

	// makes rgba() and hsla()
	color.fn[ spaceName ] = function( value ) {

		// generate a cache for this space if it doesn't exist
		if ( to && !this[ cache ] ) {
			this[ cache ] = to( this._rgba );
		}
		if ( value === undefined ) {
			return this[ cache ].slice();
		}

		var ret,
			type = jQuery.type( value ),
			arr = ( type === "array" || type === "object" ) ? value : arguments,
			local = this[ cache ].slice();

		each( props, function( key, prop ) {
			var val = arr[ type === "object" ? key : prop.idx ];
			if ( val == null ) {
				val = local[ prop.idx ];
			}
			local[ prop.idx ] = clamp( val, prop );
		});

		if ( from ) {
			ret = color( from( local ) );
			ret[ cache ] = local;
			return ret;
		} else {
			return color( local );
		}
	};

	// makes red() green() blue() alpha() hue() saturation() lightness()
	each( props, function( key, prop ) {
		// alpha is included in more than one space
		if ( color.fn[ key ] ) {
			return;
		}
		color.fn[ key ] = function( value ) {
			var vtype = jQuery.type( value ),
				fn = ( key === "alpha" ? ( this._hsla ? "hsla" : "rgba" ) : spaceName ),
				local = this[ fn ](),
				cur = local[ prop.idx ],
				match;

			if ( vtype === "undefined" ) {
				return cur;
			}

			if ( vtype === "function" ) {
				value = value.call( this, cur );
				vtype = jQuery.type( value );
			}
			if ( value == null && prop.empty ) {
				return this;
			}
			if ( vtype === "string" ) {
				match = rplusequals.exec( value );
				if ( match ) {
					value = cur + parseFloat( match[ 2 ] ) * ( match[ 1 ] === "+" ? 1 : -1 );
				}
			}
			local[ prop.idx ] = value;
			return this[ fn ]( local );
		};
	});
});

// add cssHook and .fx.step function for each named hook.
// accept a space separated string of properties
color.hook = function( hook ) {
	var hooks = hook.split( " " );
	each( hooks, function( i, hook ) {
		jQuery.cssHooks[ hook ] = {
			set: function( elem, value ) {
				var parsed, curElem,
					backgroundColor = "";

				if ( value !== "transparent" && ( jQuery.type( value ) !== "string" || ( parsed = stringParse( value ) ) ) ) {
					value = color( parsed || value );
					if ( !support.rgba && value._rgba[ 3 ] !== 1 ) {
						curElem = hook === "backgroundColor" ? elem.parentNode : elem;
						while (
							(backgroundColor === "" || backgroundColor === "transparent") &&
							curElem && curElem.style
						) {
							try {
								backgroundColor = jQuery.css( curElem, "backgroundColor" );
								curElem = curElem.parentNode;
							} catch ( e ) {
							}
						}

						value = value.blend( backgroundColor && backgroundColor !== "transparent" ?
							backgroundColor :
							"_default" );
					}

					value = value.toRgbaString();
				}
				try {
					elem.style[ hook ] = value;
				} catch( e ) {
					// wrapped to prevent IE from throwing errors on "invalid" values like 'auto' or 'inherit'
				}
			}
		};
		jQuery.fx.step[ hook ] = function( fx ) {
			if ( !fx.colorInit ) {
				fx.start = color( fx.elem, hook );
				fx.end = color( fx.end );
				fx.colorInit = true;
			}
			jQuery.cssHooks[ hook ].set( fx.elem, fx.start.transition( fx.end, fx.pos ) );
		};
	});

};

color.hook( stepHooks );

jQuery.cssHooks.borderColor = {
	expand: function( value ) {
		var expanded = {};

		each( [ "Top", "Right", "Bottom", "Left" ], function( i, part ) {
			expanded[ "border" + part + "Color" ] = value;
		});
		return expanded;
	}
};

// Basic color names only.
// Usage of any of the other color names requires adding yourself or including
// jquery.color.svg-names.js.
colors = jQuery.Color.names = {
	// 4.1. Basic color keywords
	aqua: "#00ffff",
	black: "#000000",
	blue: "#0000ff",
	fuchsia: "#ff00ff",
	gray: "#808080",
	green: "#008000",
	lime: "#00ff00",
	maroon: "#800000",
	navy: "#000080",
	olive: "#808000",
	purple: "#800080",
	red: "#ff0000",
	silver: "#c0c0c0",
	teal: "#008080",
	white: "#ffffff",
	yellow: "#ffff00",

	// 4.2.3. "transparent" color keyword
	transparent: [ null, null, null, 0 ],

	_default: "#ffffff"
};

})( jQuery );


/******************************************************************************/
/****************************** CLASS ANIMATIONS ******************************/
/******************************************************************************/
(function() {

var classAnimationActions = [ "add", "remove", "toggle" ],
	shorthandStyles = {
		border: 1,
		borderBottom: 1,
		borderColor: 1,
		borderLeft: 1,
		borderRight: 1,
		borderTop: 1,
		borderWidth: 1,
		margin: 1,
		padding: 1
	};

$.each([ "borderLeftStyle", "borderRightStyle", "borderBottomStyle", "borderTopStyle" ], function( _, prop ) {
	$.fx.step[ prop ] = function( fx ) {
		if ( fx.end !== "none" && !fx.setAttr || fx.pos === 1 && !fx.setAttr ) {
			jQuery.style( fx.elem, prop, fx.end );
			fx.setAttr = true;
		}
	};
});

function getElementStyles( elem ) {
	var key, len,
		style = elem.ownerDocument.defaultView ?
			elem.ownerDocument.defaultView.getComputedStyle( elem, null ) :
			elem.currentStyle,
		styles = {};

	if ( style && style.length && style[ 0 ] && style[ style[ 0 ] ] ) {
		len = style.length;
		while ( len-- ) {
			key = style[ len ];
			if ( typeof style[ key ] === "string" ) {
				styles[ $.camelCase( key ) ] = style[ key ];
			}
		}
	// support: Opera, IE <9
	} else {
		for ( key in style ) {
			if ( typeof style[ key ] === "string" ) {
				styles[ key ] = style[ key ];
			}
		}
	}

	return styles;
}


function styleDifference( oldStyle, newStyle ) {
	var diff = {},
		name, value;

	for ( name in newStyle ) {
		value = newStyle[ name ];
		if ( oldStyle[ name ] !== value ) {
			if ( !shorthandStyles[ name ] ) {
				if ( $.fx.step[ name ] || !isNaN( parseFloat( value ) ) ) {
					diff[ name ] = value;
				}
			}
		}
	}

	return diff;
}

// support: jQuery <1.8
if ( !$.fn.addBack ) {
	$.fn.addBack = function( selector ) {
		return this.add( selector == null ?
			this.prevObject : this.prevObject.filter( selector )
		);
	};
}

$.effects.animateClass = function( value, duration, easing, callback ) {
	var o = $.speed( duration, easing, callback );

	return this.queue( function() {
		var animated = $( this ),
			baseClass = animated.attr( "class" ) || "",
			applyClassChange,
			allAnimations = o.children ? animated.find( "*" ).addBack() : animated;

		// map the animated objects to store the original styles.
		allAnimations = allAnimations.map(function() {
			var el = $( this );
			return {
				el: el,
				start: getElementStyles( this )
			};
		});

		// apply class change
		applyClassChange = function() {
			$.each( classAnimationActions, function(i, action) {
				if ( value[ action ] ) {
					animated[ action + "Class" ]( value[ action ] );
				}
			});
		};
		applyClassChange();

		// map all animated objects again - calculate new styles and diff
		allAnimations = allAnimations.map(function() {
			this.end = getElementStyles( this.el[ 0 ] );
			this.diff = styleDifference( this.start, this.end );
			return this;
		});

		// apply original class
		animated.attr( "class", baseClass );

		// map all animated objects again - this time collecting a promise
		allAnimations = allAnimations.map(function() {
			var styleInfo = this,
				dfd = $.Deferred(),
				opts = $.extend({}, o, {
					queue: false,
					complete: function() {
						dfd.resolve( styleInfo );
					}
				});

			this.el.animate( this.diff, opts );
			return dfd.promise();
		});

		// once all animations have completed:
		$.when.apply( $, allAnimations.get() ).done(function() {

			// set the final class
			applyClassChange();

			// for each animated element,
			// clear all css properties that were animated
			$.each( arguments, function() {
				var el = this.el;
				$.each( this.diff, function(key) {
					el.css( key, "" );
				});
			});

			// this is guarnteed to be there if you use jQuery.speed()
			// it also handles dequeuing the next anim...
			o.complete.call( animated[ 0 ] );
		});
	});
};

$.fn.extend({
	_addClass: $.fn.addClass,
	addClass: function( classNames, speed, easing, callback ) {
		return speed ?
			$.effects.animateClass.call( this,
				{ add: classNames }, speed, easing, callback ) :
			this._addClass( classNames );
	},

	_removeClass: $.fn.removeClass,
	removeClass: function( classNames, speed, easing, callback ) {
		return arguments.length > 1 ?
			$.effects.animateClass.call( this,
				{ remove: classNames }, speed, easing, callback ) :
			this._removeClass.apply( this, arguments );
	},

	_toggleClass: $.fn.toggleClass,
	toggleClass: function( classNames, force, speed, easing, callback ) {
		if ( typeof force === "boolean" || force === undefined ) {
			if ( !speed ) {
				// without speed parameter
				return this._toggleClass( classNames, force );
			} else {
				return $.effects.animateClass.call( this,
					(force ? { add: classNames } : { remove: classNames }),
					speed, easing, callback );
			}
		} else {
			// without force parameter
			return $.effects.animateClass.call( this,
				{ toggle: classNames }, force, speed, easing );
		}
	},

	switchClass: function( remove, add, speed, easing, callback) {
		return $.effects.animateClass.call( this, {
			add: add,
			remove: remove
		}, speed, easing, callback );
	}
});

})();

/******************************************************************************/
/*********************************** EFFECTS **********************************/
/******************************************************************************/

(function() {

$.extend( $.effects, {
	version: "1.10.1",

	// Saves a set of properties in a data storage
	save: function( element, set ) {
		for( var i=0; i < set.length; i++ ) {
			if ( set[ i ] !== null ) {
				element.data( dataSpace + set[ i ], element[ 0 ].style[ set[ i ] ] );
			}
		}
	},

	// Restores a set of previously saved properties from a data storage
	restore: function( element, set ) {
		var val, i;
		for( i=0; i < set.length; i++ ) {
			if ( set[ i ] !== null ) {
				val = element.data( dataSpace + set[ i ] );
				// support: jQuery 1.6.2
				// http://bugs.jquery.com/ticket/9917
				// jQuery 1.6.2 incorrectly returns undefined for any falsy value.
				// We can't differentiate between "" and 0 here, so we just assume
				// empty string since it's likely to be a more common value...
				if ( val === undefined ) {
					val = "";
				}
				element.css( set[ i ], val );
			}
		}
	},

	setMode: function( el, mode ) {
		if (mode === "toggle") {
			mode = el.is( ":hidden" ) ? "show" : "hide";
		}
		return mode;
	},

	// Translates a [top,left] array into a baseline value
	// this should be a little more flexible in the future to handle a string & hash
	getBaseline: function( origin, original ) {
		var y, x;
		switch ( origin[ 0 ] ) {
			case "top": y = 0; break;
			case "middle": y = 0.5; break;
			case "bottom": y = 1; break;
			default: y = origin[ 0 ] / original.height;
		}
		switch ( origin[ 1 ] ) {
			case "left": x = 0; break;
			case "center": x = 0.5; break;
			case "right": x = 1; break;
			default: x = origin[ 1 ] / original.width;
		}
		return {
			x: x,
			y: y
		};
	},

	// Wraps the element around a wrapper that copies position properties
	createWrapper: function( element ) {

		// if the element is already wrapped, return it
		if ( element.parent().is( ".ui-effects-wrapper" )) {
			return element.parent();
		}

		// wrap the element
		var props = {
				width: element.outerWidth(true),
				height: element.outerHeight(true),
				"float": element.css( "float" )
			},
			wrapper = $( "<div></div>" )
				.addClass( "ui-effects-wrapper" )
				.css({
					fontSize: "100%",
					background: "transparent",
					border: "none",
					margin: 0,
					padding: 0
				}),
			// Store the size in case width/height are defined in % - Fixes #5245
			size = {
				width: element.width(),
				height: element.height()
			},
			active = document.activeElement;

		// support: Firefox
		// Firefox incorrectly exposes anonymous content
		// https://bugzilla.mozilla.org/show_bug.cgi?id=561664
		try {
			active.id;
		} catch( e ) {
			active = document.body;
		}

		element.wrap( wrapper );

		// Fixes #7595 - Elements lose focus when wrapped.
		if ( element[ 0 ] === active || $.contains( element[ 0 ], active ) ) {
			$( active ).focus();
		}

		wrapper = element.parent(); //Hotfix for jQuery 1.4 since some change in wrap() seems to actually lose the reference to the wrapped element

		// transfer positioning properties to the wrapper
		if ( element.css( "position" ) === "static" ) {
			wrapper.css({ position: "relative" });
			element.css({ position: "relative" });
		} else {
			$.extend( props, {
				position: element.css( "position" ),
				zIndex: element.css( "z-index" )
			});
			$.each([ "top", "left", "bottom", "right" ], function(i, pos) {
				props[ pos ] = element.css( pos );
				if ( isNaN( parseInt( props[ pos ], 10 ) ) ) {
					props[ pos ] = "auto";
				}
			});
			element.css({
				position: "relative",
				top: 0,
				left: 0,
				right: "auto",
				bottom: "auto"
			});
		}
		element.css(size);

		return wrapper.css( props ).show();
	},

	removeWrapper: function( element ) {
		var active = document.activeElement;

		if ( element.parent().is( ".ui-effects-wrapper" ) ) {
			element.parent().replaceWith( element );

			// Fixes #7595 - Elements lose focus when wrapped.
			if ( element[ 0 ] === active || $.contains( element[ 0 ], active ) ) {
				$( active ).focus();
			}
		}


		return element;
	},

	setTransition: function( element, list, factor, value ) {
		value = value || {};
		$.each( list, function( i, x ) {
			var unit = element.cssUnit( x );
			if ( unit[ 0 ] > 0 ) {
				value[ x ] = unit[ 0 ] * factor + unit[ 1 ];
			}
		});
		return value;
	}
});

// return an effect options object for the given parameters:
function _normalizeArguments( effect, options, speed, callback ) {

	// allow passing all options as the first parameter
	if ( $.isPlainObject( effect ) ) {
		options = effect;
		effect = effect.effect;
	}

	// convert to an object
	effect = { effect: effect };

	// catch (effect, null, ...)
	if ( options == null ) {
		options = {};
	}

	// catch (effect, callback)
	if ( $.isFunction( options ) ) {
		callback = options;
		speed = null;
		options = {};
	}

	// catch (effect, speed, ?)
	if ( typeof options === "number" || $.fx.speeds[ options ] ) {
		callback = speed;
		speed = options;
		options = {};
	}

	// catch (effect, options, callback)
	if ( $.isFunction( speed ) ) {
		callback = speed;
		speed = null;
	}

	// add options to effect
	if ( options ) {
		$.extend( effect, options );
	}

	speed = speed || options.duration;
	effect.duration = $.fx.off ? 0 :
		typeof speed === "number" ? speed :
		speed in $.fx.speeds ? $.fx.speeds[ speed ] :
		$.fx.speeds._default;

	effect.complete = callback || options.complete;

	return effect;
}

function standardSpeed( speed ) {
	// valid standard speeds
	if ( !speed || typeof speed === "number" || $.fx.speeds[ speed ] ) {
		return true;
	}

	// invalid strings - treat as "normal" speed
	return typeof speed === "string" && !$.effects.effect[ speed ];
}

$.fn.extend({
	effect: function( /* effect, options, speed, callback */ ) {
		var args = _normalizeArguments.apply( this, arguments ),
			mode = args.mode,
			queue = args.queue,
			effectMethod = $.effects.effect[ args.effect ];

		if ( $.fx.off || !effectMethod ) {
			// delegate to the original method (e.g., .show()) if possible
			if ( mode ) {
				return this[ mode ]( args.duration, args.complete );
			} else {
				return this.each( function() {
					if ( args.complete ) {
						args.complete.call( this );
					}
				});
			}
		}

		function run( next ) {
			var elem = $( this ),
				complete = args.complete,
				mode = args.mode;

			function done() {
				if ( $.isFunction( complete ) ) {
					complete.call( elem[0] );
				}
				if ( $.isFunction( next ) ) {
					next();
				}
			}

			// if the element is hiddden and mode is hide,
			// or element is visible and mode is show
			if ( elem.is( ":hidden" ) ? mode === "hide" : mode === "show" ) {
				done();
			} else {
				effectMethod.call( elem[0], args, done );
			}
		}

		return queue === false ? this.each( run ) : this.queue( queue || "fx", run );
	},

	_show: $.fn.show,
	show: function( speed ) {
		if ( standardSpeed( speed ) ) {
			return this._show.apply( this, arguments );
		} else {
			var args = _normalizeArguments.apply( this, arguments );
			args.mode = "show";
			return this.effect.call( this, args );
		}
	},

	_hide: $.fn.hide,
	hide: function( speed ) {
		if ( standardSpeed( speed ) ) {
			return this._hide.apply( this, arguments );
		} else {
			var args = _normalizeArguments.apply( this, arguments );
			args.mode = "hide";
			return this.effect.call( this, args );
		}
	},

	// jQuery core overloads toggle and creates _toggle
	__toggle: $.fn.toggle,
	toggle: function( speed ) {
		if ( standardSpeed( speed ) || typeof speed === "boolean" || $.isFunction( speed ) ) {
			return this.__toggle.apply( this, arguments );
		} else {
			var args = _normalizeArguments.apply( this, arguments );
			args.mode = "toggle";
			return this.effect.call( this, args );
		}
	},

	// helper functions
	cssUnit: function(key) {
		var style = this.css( key ),
			val = [];

		$.each( [ "em", "px", "%", "pt" ], function( i, unit ) {
			if ( style.indexOf( unit ) > 0 ) {
				val = [ parseFloat( style ), unit ];
			}
		});
		return val;
	}
});

})();

/******************************************************************************/
/*********************************** EASING ***********************************/
/******************************************************************************/

(function() {

// based on easing equations from Robert Penner (http://www.robertpenner.com/easing)

var baseEasings = {};

$.each( [ "Quad", "Cubic", "Quart", "Quint", "Expo" ], function( i, name ) {
	baseEasings[ name ] = function( p ) {
		return Math.pow( p, i + 2 );
	};
});

$.extend( baseEasings, {
	Sine: function ( p ) {
		return 1 - Math.cos( p * Math.PI / 2 );
	},
	Circ: function ( p ) {
		return 1 - Math.sqrt( 1 - p * p );
	},
	Elastic: function( p ) {
		return p === 0 || p === 1 ? p :
			-Math.pow( 2, 8 * (p - 1) ) * Math.sin( ( (p - 1) * 80 - 7.5 ) * Math.PI / 15 );
	},
	Back: function( p ) {
		return p * p * ( 3 * p - 2 );
	},
	Bounce: function ( p ) {
		var pow2,
			bounce = 4;

		while ( p < ( ( pow2 = Math.pow( 2, --bounce ) ) - 1 ) / 11 ) {}
		return 1 / Math.pow( 4, 3 - bounce ) - 7.5625 * Math.pow( ( pow2 * 3 - 2 ) / 22 - p, 2 );
	}
});

$.each( baseEasings, function( name, easeIn ) {
	$.easing[ "easeIn" + name ] = easeIn;
	$.easing[ "easeOut" + name ] = function( p ) {
		return 1 - easeIn( 1 - p );
	};
	$.easing[ "easeInOut" + name ] = function( p ) {
		return p < 0.5 ?
			easeIn( p * 2 ) / 2 :
			1 - easeIn( p * -2 + 2 ) / 2;
	};
});

})();

})(jQuery));
(function( $, undefined ) {

var rvertical = /up|down|vertical/,
	rpositivemotion = /up|left|vertical|horizontal/;

$.effects.effect.blind = function( o, done ) {
	// Create element
	var el = $( this ),
		props = [ "position", "top", "bottom", "left", "right", "height", "width" ],
		mode = $.effects.setMode( el, o.mode || "hide" ),
		direction = o.direction || "up",
		vertical = rvertical.test( direction ),
		ref = vertical ? "height" : "width",
		ref2 = vertical ? "top" : "left",
		motion = rpositivemotion.test( direction ),
		animation = {},
		show = mode === "show",
		wrapper, distance, margin;

	// if already wrapped, the wrapper's properties are my property. #6245
	if ( el.parent().is( ".ui-effects-wrapper" ) ) {
		$.effects.save( el.parent(), props );
	} else {
		$.effects.save( el, props );
	}
	el.show();
	wrapper = $.effects.createWrapper( el ).css({
		overflow: "hidden"
	});

	distance = wrapper[ ref ]();
	margin = parseFloat( wrapper.css( ref2 ) ) || 0;

	animation[ ref ] = show ? distance : 0;
	if ( !motion ) {
		el
			.css( vertical ? "bottom" : "right", 0 )
			.css( vertical ? "top" : "left", "auto" )
			.css({ position: "absolute" });

		animation[ ref2 ] = show ? margin : distance + margin;
	}

	// start at 0 if we are showing
	if ( show ) {
		wrapper.css( ref, 0 );
		if ( ! motion ) {
			wrapper.css( ref2, margin + distance );
		}
	}

	// Animate
	wrapper.animate( animation, {
		duration: o.duration,
		easing: o.easing,
		queue: false,
		complete: function() {
			if ( mode === "hide" ) {
				el.hide();
			}
			$.effects.restore( el, props );
			$.effects.removeWrapper( el );
			done();
		}
	});

};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.bounce = function( o, done ) {
	var el = $( this ),
		props = [ "position", "top", "bottom", "left", "right", "height", "width" ],

		// defaults:
		mode = $.effects.setMode( el, o.mode || "effect" ),
		hide = mode === "hide",
		show = mode === "show",
		direction = o.direction || "up",
		distance = o.distance,
		times = o.times || 5,

		// number of internal animations
		anims = times * 2 + ( show || hide ? 1 : 0 ),
		speed = o.duration / anims,
		easing = o.easing,

		// utility:
		ref = ( direction === "up" || direction === "down" ) ? "top" : "left",
		motion = ( direction === "up" || direction === "left" ),
		i,
		upAnim,
		downAnim,

		// we will need to re-assemble the queue to stack our animations in place
		queue = el.queue(),
		queuelen = queue.length;

	// Avoid touching opacity to prevent clearType and PNG issues in IE
	if ( show || hide ) {
		props.push( "opacity" );
	}

	$.effects.save( el, props );
	el.show();
	$.effects.createWrapper( el ); // Create Wrapper

	// default distance for the BIGGEST bounce is the outer Distance / 3
	if ( !distance ) {
		distance = el[ ref === "top" ? "outerHeight" : "outerWidth" ]() / 3;
	}

	if ( show ) {
		downAnim = { opacity: 1 };
		downAnim[ ref ] = 0;

		// if we are showing, force opacity 0 and set the initial position
		// then do the "first" animation
		el.css( "opacity", 0 )
			.css( ref, motion ? -distance * 2 : distance * 2 )
			.animate( downAnim, speed, easing );
	}

	// start at the smallest distance if we are hiding
	if ( hide ) {
		distance = distance / Math.pow( 2, times - 1 );
	}

	downAnim = {};
	downAnim[ ref ] = 0;
	// Bounces up/down/left/right then back to 0 -- times * 2 animations happen here
	for ( i = 0; i < times; i++ ) {
		upAnim = {};
		upAnim[ ref ] = ( motion ? "-=" : "+=" ) + distance;

		el.animate( upAnim, speed, easing )
			.animate( downAnim, speed, easing );

		distance = hide ? distance * 2 : distance / 2;
	}

	// Last Bounce when Hiding
	if ( hide ) {
		upAnim = { opacity: 0 };
		upAnim[ ref ] = ( motion ? "-=" : "+=" ) + distance;

		el.animate( upAnim, speed, easing );
	}

	el.queue(function() {
		if ( hide ) {
			el.hide();
		}
		$.effects.restore( el, props );
		$.effects.removeWrapper( el );
		done();
	});

	// inject all the animations we just queued to be first in line (after "inprogress")
	if ( queuelen > 1) {
		queue.splice.apply( queue,
			[ 1, 0 ].concat( queue.splice( queuelen, anims + 1 ) ) );
	}
	el.dequeue();

};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.clip = function( o, done ) {
	// Create element
	var el = $( this ),
		props = [ "position", "top", "bottom", "left", "right", "height", "width" ],
		mode = $.effects.setMode( el, o.mode || "hide" ),
		show = mode === "show",
		direction = o.direction || "vertical",
		vert = direction === "vertical",
		size = vert ? "height" : "width",
		position = vert ? "top" : "left",
		animation = {},
		wrapper, animate, distance;

	// Save & Show
	$.effects.save( el, props );
	el.show();

	// Create Wrapper
	wrapper = $.effects.createWrapper( el ).css({
		overflow: "hidden"
	});
	animate = ( el[0].tagName === "IMG" ) ? wrapper : el;
	distance = animate[ size ]();

	// Shift
	if ( show ) {
		animate.css( size, 0 );
		animate.css( position, distance / 2 );
	}

	// Create Animation Object:
	animation[ size ] = show ? distance : 0;
	animation[ position ] = show ? 0 : distance / 2;

	// Animate
	animate.animate( animation, {
		queue: false,
		duration: o.duration,
		easing: o.easing,
		complete: function() {
			if ( !show ) {
				el.hide();
			}
			$.effects.restore( el, props );
			$.effects.removeWrapper( el );
			done();
		}
	});

};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.drop = function( o, done ) {

	var el = $( this ),
		props = [ "position", "top", "bottom", "left", "right", "opacity", "height", "width" ],
		mode = $.effects.setMode( el, o.mode || "hide" ),
		show = mode === "show",
		direction = o.direction || "left",
		ref = ( direction === "up" || direction === "down" ) ? "top" : "left",
		motion = ( direction === "up" || direction === "left" ) ? "pos" : "neg",
		animation = {
			opacity: show ? 1 : 0
		},
		distance;

	// Adjust
	$.effects.save( el, props );
	el.show();
	$.effects.createWrapper( el );

	distance = o.distance || el[ ref === "top" ? "outerHeight": "outerWidth" ]( true ) / 2;

	if ( show ) {
		el
			.css( "opacity", 0 )
			.css( ref, motion === "pos" ? -distance : distance );
	}

	// Animation
	animation[ ref ] = ( show ?
		( motion === "pos" ? "+=" : "-=" ) :
		( motion === "pos" ? "-=" : "+=" ) ) +
		distance;

	// Animate
	el.animate( animation, {
		queue: false,
		duration: o.duration,
		easing: o.easing,
		complete: function() {
			if ( mode === "hide" ) {
				el.hide();
			}
			$.effects.restore( el, props );
			$.effects.removeWrapper( el );
			done();
		}
	});
};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.explode = function( o, done ) {

	var rows = o.pieces ? Math.round( Math.sqrt( o.pieces ) ) : 3,
		cells = rows,
		el = $( this ),
		mode = $.effects.setMode( el, o.mode || "hide" ),
		show = mode === "show",

		// show and then visibility:hidden the element before calculating offset
		offset = el.show().css( "visibility", "hidden" ).offset(),

		// width and height of a piece
		width = Math.ceil( el.outerWidth() / cells ),
		height = Math.ceil( el.outerHeight() / rows ),
		pieces = [],

		// loop
		i, j, left, top, mx, my;

	// children animate complete:
	function childComplete() {
		pieces.push( this );
		if ( pieces.length === rows * cells ) {
			animComplete();
		}
	}

	// clone the element for each row and cell.
	for( i = 0; i < rows ; i++ ) { // ===>
		top = offset.top + i * height;
		my = i - ( rows - 1 ) / 2 ;

		for( j = 0; j < cells ; j++ ) { // |||
			left = offset.left + j * width;
			mx = j - ( cells - 1 ) / 2 ;

			// Create a clone of the now hidden main element that will be absolute positioned
			// within a wrapper div off the -left and -top equal to size of our pieces
			el
				.clone()
				.appendTo( "body" )
				.wrap( "<div></div>" )
				.css({
					position: "absolute",
					visibility: "visible",
					left: -j * width,
					top: -i * height
				})

			// select the wrapper - make it overflow: hidden and absolute positioned based on
			// where the original was located +left and +top equal to the size of pieces
				.parent()
				.addClass( "ui-effects-explode" )
				.css({
					position: "absolute",
					overflow: "hidden",
					width: width,
					height: height,
					left: left + ( show ? mx * width : 0 ),
					top: top + ( show ? my * height : 0 ),
					opacity: show ? 0 : 1
				}).animate({
					left: left + ( show ? 0 : mx * width ),
					top: top + ( show ? 0 : my * height ),
					opacity: show ? 1 : 0
				}, o.duration || 500, o.easing, childComplete );
		}
	}

	function animComplete() {
		el.css({
			visibility: "visible"
		});
		$( pieces ).remove();
		if ( !show ) {
			el.hide();
		}
		done();
	}
};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.fade = function( o, done ) {
	var el = $( this ),
		mode = $.effects.setMode( el, o.mode || "toggle" );

	el.animate({
		opacity: mode
	}, {
		queue: false,
		duration: o.duration,
		easing: o.easing,
		complete: done
	});
};

})( jQuery );
(function( $, undefined ) {

$.effects.effect.fold = function( o, done ) {

	// Create element
	var el = $( this ),
		props = [ "position", "top", "bottom", "left", "right", "height", "width" ],
		mode = $.effects.setMode( el, o.mode || "hide" ),
		show = mode === "show",
		hide = mode === "hide",
		size = o.size || 15,
		percent = /([0-9]+)%/.exec( size ),
		horizFirst = !!o.horizFirst,
		widthFirst = show !== horizFirst,
		ref = widthFirst ? [ "width", "height" ] : [ "height", "width" ],
		duration = o.duration / 2,
		wrapper, distance,
		animation1 = {},
		animation2 = {};

	$.effects.save( el, props );
	el.show();

	// Create Wrapper
	wrapper = $.effects.createWrapper( el ).css({
		overflow: "hidden"
	});
	distance = widthFirst ?
		[ wrapper.width(), wrapper.height() ] :
		[ wrapper.height(), wrapper.width() ];

	if ( percent ) {
		size = parseInt( percent[ 1 ], 10 ) / 100 * distance[ hide ? 0 : 1 ];
	}
	if ( show ) {
		wrapper.css( horizFirst ? {
			height: 0,
			width: size
		} : {
			height: size,
			width: 0
		});
	}

	// Animation
	animation1[ ref[ 0 ] ] = show ? distance[ 0 ] : size;
	animation2[ ref[ 1 ] ] = show ? distance[ 1 ] : 0;

	// Animate
	wrapper
		.animate( animation1, duration, o.easing )
		.animate( animation2, duration, o.easing, function() {
			if ( hide ) {
				el.hide();
			}
			$.effects.restore( el, props );
			$.effects.removeWrapper( el );
			done();
		});

};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.highlight = function( o, done ) {
	var elem = $( this ),
		props = [ "backgroundImage", "backgroundColor", "opacity" ],
		mode = $.effects.setMode( elem, o.mode || "show" ),
		animation = {
			backgroundColor: elem.css( "backgroundColor" )
		};

	if (mode === "hide") {
		animation.opacity = 0;
	}

	$.effects.save( elem, props );

	elem
		.show()
		.css({
			backgroundImage: "none",
			backgroundColor: o.color || "#ffff99"
		})
		.animate( animation, {
			queue: false,
			duration: o.duration,
			easing: o.easing,
			complete: function() {
				if ( mode === "hide" ) {
					elem.hide();
				}
				$.effects.restore( elem, props );
				done();
			}
		});
};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.pulsate = function( o, done ) {
	var elem = $( this ),
		mode = $.effects.setMode( elem, o.mode || "show" ),
		show = mode === "show",
		hide = mode === "hide",
		showhide = ( show || mode === "hide" ),

		// showing or hiding leaves of the "last" animation
		anims = ( ( o.times || 5 ) * 2 ) + ( showhide ? 1 : 0 ),
		duration = o.duration / anims,
		animateTo = 0,
		queue = elem.queue(),
		queuelen = queue.length,
		i;

	if ( show || !elem.is(":visible")) {
		elem.css( "opacity", 0 ).show();
		animateTo = 1;
	}

	// anims - 1 opacity "toggles"
	for ( i = 1; i < anims; i++ ) {
		elem.animate({
			opacity: animateTo
		}, duration, o.easing );
		animateTo = 1 - animateTo;
	}

	elem.animate({
		opacity: animateTo
	}, duration, o.easing);

	elem.queue(function() {
		if ( hide ) {
			elem.hide();
		}
		done();
	});

	// We just queued up "anims" animations, we need to put them next in the queue
	if ( queuelen > 1 ) {
		queue.splice.apply( queue,
			[ 1, 0 ].concat( queue.splice( queuelen, anims + 1 ) ) );
	}
	elem.dequeue();
};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.puff = function( o, done ) {
	var elem = $( this ),
		mode = $.effects.setMode( elem, o.mode || "hide" ),
		hide = mode === "hide",
		percent = parseInt( o.percent, 10 ) || 150,
		factor = percent / 100,
		original = {
			height: elem.height(),
			width: elem.width(),
			outerHeight: elem.outerHeight(),
			outerWidth: elem.outerWidth()
		};

	$.extend( o, {
		effect: "scale",
		queue: false,
		fade: true,
		mode: mode,
		complete: done,
		percent: hide ? percent : 100,
		from: hide ?
			original :
			{
				height: original.height * factor,
				width: original.width * factor,
				outerHeight: original.outerHeight * factor,
				outerWidth: original.outerWidth * factor
			}
	});

	elem.effect( o );
};

$.effects.effect.scale = function( o, done ) {

	// Create element
	var el = $( this ),
		options = $.extend( true, {}, o ),
		mode = $.effects.setMode( el, o.mode || "effect" ),
		percent = parseInt( o.percent, 10 ) ||
			( parseInt( o.percent, 10 ) === 0 ? 0 : ( mode === "hide" ? 0 : 100 ) ),
		direction = o.direction || "both",
		origin = o.origin,
		original = {
			height: el.height(),
			width: el.width(),
			outerHeight: el.outerHeight(),
			outerWidth: el.outerWidth()
		},
		factor = {
			y: direction !== "horizontal" ? (percent / 100) : 1,
			x: direction !== "vertical" ? (percent / 100) : 1
		};

	// We are going to pass this effect to the size effect:
	options.effect = "size";
	options.queue = false;
	options.complete = done;

	// Set default origin and restore for show/hide
	if ( mode !== "effect" ) {
		options.origin = origin || ["middle","center"];
		options.restore = true;
	}

	options.from = o.from || ( mode === "show" ? {
		height: 0,
		width: 0,
		outerHeight: 0,
		outerWidth: 0
	} : original );
	options.to = {
		height: original.height * factor.y,
		width: original.width * factor.x,
		outerHeight: original.outerHeight * factor.y,
		outerWidth: original.outerWidth * factor.x
	};

	// Fade option to support puff
	if ( options.fade ) {
		if ( mode === "show" ) {
			options.from.opacity = 0;
			options.to.opacity = 1;
		}
		if ( mode === "hide" ) {
			options.from.opacity = 1;
			options.to.opacity = 0;
		}
	}

	// Animate
	el.effect( options );

};

$.effects.effect.size = function( o, done ) {

	// Create element
	var original, baseline, factor,
		el = $( this ),
		props0 = [ "position", "top", "bottom", "left", "right", "width", "height", "overflow", "opacity" ],

		// Always restore
		props1 = [ "position", "top", "bottom", "left", "right", "overflow", "opacity" ],

		// Copy for children
		props2 = [ "width", "height", "overflow" ],
		cProps = [ "fontSize" ],
		vProps = [ "borderTopWidth", "borderBottomWidth", "paddingTop", "paddingBottom" ],
		hProps = [ "borderLeftWidth", "borderRightWidth", "paddingLeft", "paddingRight" ],

		// Set options
		mode = $.effects.setMode( el, o.mode || "effect" ),
		restore = o.restore || mode !== "effect",
		scale = o.scale || "both",
		origin = o.origin || [ "middle", "center" ],
		position = el.css( "position" ),
		props = restore ? props0 : props1,
		zero = {
			height: 0,
			width: 0,
			outerHeight: 0,
			outerWidth: 0
		};

	if ( mode === "show" ) {
		el.show();
	}
	original = {
		height: el.height(),
		width: el.width(),
		outerHeight: el.outerHeight(),
		outerWidth: el.outerWidth()
	};

	if ( o.mode === "toggle" && mode === "show" ) {
		el.from = o.to || zero;
		el.to = o.from || original;
	} else {
		el.from = o.from || ( mode === "show" ? zero : original );
		el.to = o.to || ( mode === "hide" ? zero : original );
	}

	// Set scaling factor
	factor = {
		from: {
			y: el.from.height / original.height,
			x: el.from.width / original.width
		},
		to: {
			y: el.to.height / original.height,
			x: el.to.width / original.width
		}
	};

	// Scale the css box
	if ( scale === "box" || scale === "both" ) {

		// Vertical props scaling
		if ( factor.from.y !== factor.to.y ) {
			props = props.concat( vProps );
			el.from = $.effects.setTransition( el, vProps, factor.from.y, el.from );
			el.to = $.effects.setTransition( el, vProps, factor.to.y, el.to );
		}

		// Horizontal props scaling
		if ( factor.from.x !== factor.to.x ) {
			props = props.concat( hProps );
			el.from = $.effects.setTransition( el, hProps, factor.from.x, el.from );
			el.to = $.effects.setTransition( el, hProps, factor.to.x, el.to );
		}
	}

	// Scale the content
	if ( scale === "content" || scale === "both" ) {

		// Vertical props scaling
		if ( factor.from.y !== factor.to.y ) {
			props = props.concat( cProps ).concat( props2 );
			el.from = $.effects.setTransition( el, cProps, factor.from.y, el.from );
			el.to = $.effects.setTransition( el, cProps, factor.to.y, el.to );
		}
	}

	$.effects.save( el, props );
	el.show();
	$.effects.createWrapper( el );
	el.css( "overflow", "hidden" ).css( el.from );

	// Adjust
	if (origin) { // Calculate baseline shifts
		baseline = $.effects.getBaseline( origin, original );
		el.from.top = ( original.outerHeight - el.outerHeight() ) * baseline.y;
		el.from.left = ( original.outerWidth - el.outerWidth() ) * baseline.x;
		el.to.top = ( original.outerHeight - el.to.outerHeight ) * baseline.y;
		el.to.left = ( original.outerWidth - el.to.outerWidth ) * baseline.x;
	}
	el.css( el.from ); // set top & left

	// Animate
	if ( scale === "content" || scale === "both" ) { // Scale the children

		// Add margins/font-size
		vProps = vProps.concat([ "marginTop", "marginBottom" ]).concat(cProps);
		hProps = hProps.concat([ "marginLeft", "marginRight" ]);
		props2 = props0.concat(vProps).concat(hProps);

		el.find( "*[width]" ).each( function(){
			var child = $( this ),
				c_original = {
					height: child.height(),
					width: child.width(),
					outerHeight: child.outerHeight(),
					outerWidth: child.outerWidth()
				};
			if (restore) {
				$.effects.save(child, props2);
			}

			child.from = {
				height: c_original.height * factor.from.y,
				width: c_original.width * factor.from.x,
				outerHeight: c_original.outerHeight * factor.from.y,
				outerWidth: c_original.outerWidth * factor.from.x
			};
			child.to = {
				height: c_original.height * factor.to.y,
				width: c_original.width * factor.to.x,
				outerHeight: c_original.height * factor.to.y,
				outerWidth: c_original.width * factor.to.x
			};

			// Vertical props scaling
			if ( factor.from.y !== factor.to.y ) {
				child.from = $.effects.setTransition( child, vProps, factor.from.y, child.from );
				child.to = $.effects.setTransition( child, vProps, factor.to.y, child.to );
			}

			// Horizontal props scaling
			if ( factor.from.x !== factor.to.x ) {
				child.from = $.effects.setTransition( child, hProps, factor.from.x, child.from );
				child.to = $.effects.setTransition( child, hProps, factor.to.x, child.to );
			}

			// Animate children
			child.css( child.from );
			child.animate( child.to, o.duration, o.easing, function() {

				// Restore children
				if ( restore ) {
					$.effects.restore( child, props2 );
				}
			});
		});
	}

	// Animate
	el.animate( el.to, {
		queue: false,
		duration: o.duration,
		easing: o.easing,
		complete: function() {
			if ( el.to.opacity === 0 ) {
				el.css( "opacity", el.from.opacity );
			}
			if( mode === "hide" ) {
				el.hide();
			}
			$.effects.restore( el, props );
			if ( !restore ) {

				// we need to calculate our new positioning based on the scaling
				if ( position === "static" ) {
					el.css({
						position: "relative",
						top: el.to.top,
						left: el.to.left
					});
				} else {
					$.each([ "top", "left" ], function( idx, pos ) {
						el.css( pos, function( _, str ) {
							var val = parseInt( str, 10 ),
								toRef = idx ? el.to.left : el.to.top;

							// if original was "auto", recalculate the new value from wrapper
							if ( str === "auto" ) {
								return toRef + "px";
							}

							return val + toRef + "px";
						});
					});
				}
			}

			$.effects.removeWrapper( el );
			done();
		}
	});

};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.shake = function( o, done ) {

	var el = $( this ),
		props = [ "position", "top", "bottom", "left", "right", "height", "width" ],
		mode = $.effects.setMode( el, o.mode || "effect" ),
		direction = o.direction || "left",
		distance = o.distance || 20,
		times = o.times || 3,
		anims = times * 2 + 1,
		speed = Math.round(o.duration/anims),
		ref = (direction === "up" || direction === "down") ? "top" : "left",
		positiveMotion = (direction === "up" || direction === "left"),
		animation = {},
		animation1 = {},
		animation2 = {},
		i,

		// we will need to re-assemble the queue to stack our animations in place
		queue = el.queue(),
		queuelen = queue.length;

	$.effects.save( el, props );
	el.show();
	$.effects.createWrapper( el );

	// Animation
	animation[ ref ] = ( positiveMotion ? "-=" : "+=" ) + distance;
	animation1[ ref ] = ( positiveMotion ? "+=" : "-=" ) + distance * 2;
	animation2[ ref ] = ( positiveMotion ? "-=" : "+=" ) + distance * 2;

	// Animate
	el.animate( animation, speed, o.easing );

	// Shakes
	for ( i = 1; i < times; i++ ) {
		el.animate( animation1, speed, o.easing ).animate( animation2, speed, o.easing );
	}
	el
		.animate( animation1, speed, o.easing )
		.animate( animation, speed / 2, o.easing )
		.queue(function() {
			if ( mode === "hide" ) {
				el.hide();
			}
			$.effects.restore( el, props );
			$.effects.removeWrapper( el );
			done();
		});

	// inject all the animations we just queued to be first in line (after "inprogress")
	if ( queuelen > 1) {
		queue.splice.apply( queue,
			[ 1, 0 ].concat( queue.splice( queuelen, anims + 1 ) ) );
	}
	el.dequeue();

};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.slide = function( o, done ) {

	// Create element
	var el = $( this ),
		props = [ "position", "top", "bottom", "left", "right", "width", "height" ],
		mode = $.effects.setMode( el, o.mode || "show" ),
		show = mode === "show",
		direction = o.direction || "left",
		ref = (direction === "up" || direction === "down") ? "top" : "left",
		positiveMotion = (direction === "up" || direction === "left"),
		distance,
		animation = {};

	// Adjust
	$.effects.save( el, props );
	el.show();
	distance = o.distance || el[ ref === "top" ? "outerHeight" : "outerWidth" ]( true );

	$.effects.createWrapper( el ).css({
		overflow: "hidden"
	});

	if ( show ) {
		el.css( ref, positiveMotion ? (isNaN(distance) ? "-" + distance : -distance) : distance );
	}

	// Animation
	animation[ ref ] = ( show ?
		( positiveMotion ? "+=" : "-=") :
		( positiveMotion ? "-=" : "+=")) +
		distance;

	// Animate
	el.animate( animation, {
		queue: false,
		duration: o.duration,
		easing: o.easing,
		complete: function() {
			if ( mode === "hide" ) {
				el.hide();
			}
			$.effects.restore( el, props );
			$.effects.removeWrapper( el );
			done();
		}
	});
};

})(jQuery);
(function( $, undefined ) {

$.effects.effect.transfer = function( o, done ) {
	var elem = $( this ),
		target = $( o.to ),
		targetFixed = target.css( "position" ) === "fixed",
		body = $("body"),
		fixTop = targetFixed ? body.scrollTop() : 0,
		fixLeft = targetFixed ? body.scrollLeft() : 0,
		endPosition = target.offset(),
		animation = {
			top: endPosition.top - fixTop ,
			left: endPosition.left - fixLeft ,
			height: target.innerHeight(),
			width: target.innerWidth()
		},
		startPosition = elem.offset(),
		transfer = $( "<div class='ui-effects-transfer'></div>" )
			.appendTo( document.body )
			.addClass( o.className )
			.css({
				top: startPosition.top - fixTop ,
				left: startPosition.left - fixLeft ,
				height: elem.innerHeight(),
				width: elem.innerWidth(),
				position: targetFixed ? "fixed" : "absolute"
			})
			.animate( animation, o.duration, o.easing, function() {
				transfer.remove();
				done();
			});
};

})(jQuery);
/* --------------------------------------------------------------
         js/libs/jquery.ui.touch-punch.min.js
   -------------------------------------------------------------- */
/*!
 * jQuery UI Touch Punch 0.2.3 (forked, see below)
 *
 * Copyright 2011–2014, Dave Furfero
 * Dual licensed under the MIT or GPL Version 2 licenses.
 *
 * Depends:
 *  jquery.ui.widget.js
 *  jquery.ui.mouse.js
 *
 * This version is forked from: https://github.com/dukex/jquery-ui-touch-punch
 * And available at: https://github.com/nobitagit/jquery-ui-touch-punch
 *
 */
!function(t){function o(o,e){if(!(o.originalEvent.touches.length>1)){var u=o.originalEvent.changedTouches[0],n=document.createEvent("MouseEvents");t(u.target).is("input")||t(u.target).is("textarea")?o.stopPropagation():o.preventDefault(),n.initMouseEvent(e,!0,!0,window,1,u.screenX,u.screenY,u.clientX,u.clientY,!1,!1,!1,!1,0,null),o.target.dispatchEvent(n)}}if(t.support.touch="ontouchend"in document,t.support.touch){var e,u=t.ui.mouse.prototype,n=u._mouseInit,c=u._mouseDestroy;u._touchStart=function(t){var u=this;!e&&u._mouseCapture(t.originalEvent.changedTouches[0])&&(e=!0,u._touchMoved=!1,this._startedMove=t.timeStamp,o(t,"mouseover"),o(t,"mousemove"),o(t,"mousedown"))},u._touchMove=function(t){e&&(this._touchMoved=!0,o(t,"mousemove"))},u._touchEnd=function(t){if(e){o(t,"mouseup"),o(t,"mouseout");var u=t.timeStamp-this._startedMove;(!this._touchMoved||500>u)&&o(t,"click"),e=!1}},u._mouseInit=function(){var o=this;o.element.bind({touchstart:t.proxy(o,"_touchStart"),touchmove:t.proxy(o,"_touchMove"),touchend:t.proxy(o,"_touchEnd")}),n.call(o)},u._mouseDestroy=function(){var o=this;o.element.unbind({touchstart:t.proxy(o,"_touchStart"),touchmove:t.proxy(o,"_touchMove"),touchend:t.proxy(o,"_touchEnd")}),c.call(o)}}}(jQuery);
/* --------------------------------------------------------------
         js/libs/jquery.treeview.js
   -------------------------------------------------------------- */
/*
 * Treeview 1.4 - jQuery plugin to hide and show branches of a tree
 * 
 * http://bassistance.de/jquery-plugins/jquery-plugin-treeview/
 * http://docs.jquery.com/Plugins/Treeview
 *
 * Copyright (c) 2007 Jörn Zaefferer
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 * Revision: $Id: jquery.treeview.js 4684 2008-02-07 19:08:06Z joern.zaefferer $
 *
 */
;(function($) {

	$.extend($.fn, {
		swapClass: function(c1, c2) {
			var c1Elements = this.filter('.' + c1);
			this.filter('.' + c2).removeClass(c2).addClass(c1);
			c1Elements.removeClass(c1).addClass(c2);
			return this;
		},
		replaceClass: function(c1, c2) {
			return this.filter('.' + c1).removeClass(c1).addClass(c2).end();
		},
		hoverClass: function(className) {
			className = className || "hover";
			return this.hover(function() {
				$(this).addClass(className);
			}, function() {
				$(this).removeClass(className);
			});
		},
		heightToggle: function(animated, callback) {
			animated ?
				this.animate({ height: "toggle" }, animated, callback) :
				this.each(function(){
					jQuery(this)[ jQuery(this).is(":hidden") ? "show" : "hide" ]();
					if(callback)
						callback.apply(this, arguments);
				});
		},
		heightHide: function(animated, callback) {
			if (animated) {
				this.animate({ height: "hide" }, animated, callback);
			} else {
				this.hide();
				if (callback)
					this.each(callback);				
			}
		},
		prepareBranches: function(settings) {
			if (!settings.prerendered) {
				// mark last tree items
				this.filter(":last-child:not(ul)").addClass(CLASSES.last);
				// collapse whole tree, or only those marked as closed, anyway except those marked as open
				this.filter((settings.collapsed ? "" : "." + CLASSES.closed) + ":not(." + CLASSES.open + ")").find(">ul").hide();
			}
			// return all items with sublists
			return this.filter(":has(>ul)");
		},
		applyClasses: function(settings, toggler) {
			this.filter(":has(>ul):not(:has(>a))").find(">span").click(function(event) {
				toggler.apply($(this).next());
			}).add( $("a", this) ).hoverClass();
			
			if (!settings.prerendered) {
				// handle closed ones first
				this.filter(":has(>ul:hidden)")
						.addClass(CLASSES.expandable)
						.replaceClass(CLASSES.last, CLASSES.lastExpandable);
						
				// handle open ones
				this.not(":has(>ul:hidden)")
						.addClass(CLASSES.collapsable)
						.replaceClass(CLASSES.last, CLASSES.lastCollapsable);
						
	            // create hitarea
				this.prepend("<div class=\"" + CLASSES.hitarea + "\"/>").find("div." + CLASSES.hitarea).each(function() {
					var classes = "";
					$.each($(this).parent().attr("class").split(" "), function() {
						classes += this + "-hitarea ";
					});
					$(this).addClass( classes );
				});
			}
			
			// apply event to hitarea
			this.find("div." + CLASSES.hitarea).click( toggler );
		},
		treeview: function(settings) {
			
			settings = $.extend({
				cookieId: "treeview"
			}, settings);
			
			if (settings.add) {
				return this.trigger("add", [settings.add]);
			}
			
			if ( settings.toggle ) {
				var callback = settings.toggle;
				settings.toggle = function() {
					return callback.apply($(this).parent()[0], arguments);
				};
			}
		
			// factory for treecontroller
			function treeController(tree, control) {
				// factory for click handlers
				function handler(filter) {
					return function() {
						// reuse toggle event handler, applying the elements to toggle
						// start searching for all hitareas
						toggler.apply( $("div." + CLASSES.hitarea, tree).filter(function() {
							// for plain toggle, no filter is provided, otherwise we need to check the parent element
							return filter ? $(this).parent("." + filter).length : true;
						}) );
						return false;
					};
				}
				// click on first element to collapse tree
				$("a:eq(0)", control).click( handler(CLASSES.collapsable) );
				// click on second to expand tree
				$("a:eq(1)", control).click( handler(CLASSES.expandable) );
				// click on third to toggle tree
				$("a:eq(2)", control).click( handler() ); 
			}
		
			// handle toggle event
			function toggler() {
				$(this)
					.parent()
					// swap classes for hitarea
					.find(">.hitarea")
						.swapClass( CLASSES.collapsableHitarea, CLASSES.expandableHitarea )
						.swapClass( CLASSES.lastCollapsableHitarea, CLASSES.lastExpandableHitarea )
					.end()
					// swap classes for parent li
					.swapClass( CLASSES.collapsable, CLASSES.expandable )
					.swapClass( CLASSES.lastCollapsable, CLASSES.lastExpandable )
					// find child lists
					.find( ">ul" )
					// toggle them
					.heightToggle( settings.animated, settings.toggle );
				if ( settings.unique ) {
					$(this).parent()
						.siblings()
						// swap classes for hitarea
						.find(">.hitarea")
							.replaceClass( CLASSES.collapsableHitarea, CLASSES.expandableHitarea )
							.replaceClass( CLASSES.lastCollapsableHitarea, CLASSES.lastExpandableHitarea )
						.end()
						.replaceClass( CLASSES.collapsable, CLASSES.expandable )
						.replaceClass( CLASSES.lastCollapsable, CLASSES.lastExpandable )
						.find( ">ul" )
						.heightHide( settings.animated, settings.toggle );
				}
			}
			
			function serialize() {
				function binary(arg) {
					return arg ? 1 : 0;
				}
				var data = [];
				branches.each(function(i, e) {
					data[i] = $(e).is(":has(>ul:visible)") ? 1 : 0;
				});
				$.cookie(settings.cookieId, data.join("") );
			}
			
			function deserialize() {
				var stored = $.cookie(settings.cookieId);
				if ( stored ) {
					var data = stored.split("");
					branches.each(function(i, e) {
						$(e).find(">ul")[ parseInt(data[i]) ? "show" : "hide" ]();
					});
				}
			}
			
			// add treeview class to activate styles
			this.addClass("treeview");
			
			// prepare branches and find all tree items with child lists
			var branches = this.find("li").prepareBranches(settings);
			
			switch(settings.persist) {
			case "cookie":
				var toggleCallback = settings.toggle;
				settings.toggle = function() {
					serialize();
					if (toggleCallback) {
						toggleCallback.apply(this, arguments);
					}
				};
				deserialize();
				break;
			case "location":
				var current = this.find("a").filter(function() { return this.href.toLowerCase() == location.href.toLowerCase(); });
				if ( current.length ) {
					current.addClass("selected").parents("ul, li").add( current.next() ).show();
				}
				break;
			}
			
			branches.applyClasses(settings, toggler);
				
			// if control option is set, create the treecontroller and show it
			if ( settings.control ) {
				treeController(this, settings.control);
				$(settings.control).show();
			}
			
			return this.bind("add", function(event, branches) {
				$(branches).prev()
					.removeClass(CLASSES.last)
					.removeClass(CLASSES.lastCollapsable)
					.removeClass(CLASSES.lastExpandable)
				.find(">.hitarea")
					.removeClass(CLASSES.lastCollapsableHitarea)
					.removeClass(CLASSES.lastExpandableHitarea);
				$(branches).find("li").andSelf().prepareBranches(settings).applyClasses(settings, toggler);
			});
		}
	});
	
	// classes used by the plugin
	// need to be styled via external stylesheet, see first example
	var CLASSES = $.fn.treeview.classes = {
		open: "open",
		closed: "closed",
		expandable: "expandable",
		expandableHitarea: "expandable-hitarea",
		lastExpandableHitarea: "lastExpandable-hitarea",
		collapsable: "collapsable",
		collapsableHitarea: "collapsable-hitarea",
		lastCollapsableHitarea: "lastCollapsable-hitarea",
		lastCollapsable: "lastCollapsable",
		lastExpandable: "lastExpandable",
		last: "last",
		hitarea: "hitarea"
	};
	
	// provide backwards compability
	$.fn.Treeview = $.fn.treeview;
	
})(jQuery);
/* --------------------------------------------------------------
         js/libs/jquery.sparkline.min.js
   -------------------------------------------------------------- */
/* jquery.sparkline 2.1.2 - http://omnipotent.net/jquery.sparkline/ 
** Licensed under the New BSD License - see above site for details */

(function(a,b,c){(function(a){typeof define=="function"&&define.amd?define(["jquery"],a):jQuery&&!jQuery.fn.sparkline&&a(jQuery)})(function(d){"use strict";var e={},f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L=0;f=function(){return{common:{type:"line",lineColor:"#00f",fillColor:"#cdf",defaultPixelsPerValue:3,width:"auto",height:"auto",composite:!1,tagValuesAttribute:"values",tagOptionsPrefix:"spark",enableTagOptions:!1,enableHighlight:!0,highlightLighten:1.4,tooltipSkipNull:!0,tooltipPrefix:"",tooltipSuffix:"",disableHiddenCheck:!1,numberFormatter:!1,numberDigitGroupCount:3,numberDigitGroupSep:",",numberDecimalMark:".",disableTooltips:!1,disableInteraction:!1},line:{spotColor:"#f80",highlightSpotColor:"#5f5",highlightLineColor:"#f22",spotRadius:1.5,minSpotColor:"#f80",maxSpotColor:"#f80",lineWidth:1,normalRangeMin:c,normalRangeMax:c,normalRangeColor:"#ccc",drawNormalOnTop:!1,chartRangeMin:c,chartRangeMax:c,chartRangeMinX:c,chartRangeMaxX:c,tooltipFormat:new h('<span style="color: {{color}}">&#9679;</span> {{prefix}}{{y}}{{suffix}}')},bar:{barColor:"#3366cc",negBarColor:"#f44",stackedBarColor:["#3366cc","#dc3912","#ff9900","#109618","#66aa00","#dd4477","#0099c6","#990099"],zeroColor:c,nullColor:c,zeroAxis:!0,barWidth:4,barSpacing:1,chartRangeMax:c,chartRangeMin:c,chartRangeClip:!1,colorMap:c,tooltipFormat:new h('<span style="color: {{color}}">&#9679;</span> {{prefix}}{{value}}{{suffix}}')},tristate:{barWidth:4,barSpacing:1,posBarColor:"#6f6",negBarColor:"#f44",zeroBarColor:"#999",colorMap:{},tooltipFormat:new h('<span style="color: {{color}}">&#9679;</span> {{value:map}}'),tooltipValueLookups:{map:{"-1":"Loss",0:"Draw",1:"Win"}}},discrete:{lineHeight:"auto",thresholdColor:c,thresholdValue:0,chartRangeMax:c,chartRangeMin:c,chartRangeClip:!1,tooltipFormat:new h("{{prefix}}{{value}}{{suffix}}")},bullet:{targetColor:"#f33",targetWidth:3,performanceColor:"#33f",rangeColors:["#d3dafe","#a8b6ff","#7f94ff"],base:c,tooltipFormat:new h("{{fieldkey:fields}} - {{value}}"),tooltipValueLookups:{fields:{r:"Range",p:"Performance",t:"Target"}}},pie:{offset:0,sliceColors:["#3366cc","#dc3912","#ff9900","#109618","#66aa00","#dd4477","#0099c6","#990099"],borderWidth:0,borderColor:"#000",tooltipFormat:new h('<span style="color: {{color}}">&#9679;</span> {{value}} ({{percent.1}}%)')},box:{raw:!1,boxLineColor:"#000",boxFillColor:"#cdf",whiskerColor:"#000",outlierLineColor:"#333",outlierFillColor:"#fff",medianColor:"#f00",showOutliers:!0,outlierIQR:1.5,spotRadius:1.5,target:c,targetColor:"#4a2",chartRangeMax:c,chartRangeMin:c,tooltipFormat:new h("{{field:fields}}: {{value}}"),tooltipFormatFieldlistKey:"field",tooltipValueLookups:{fields:{lq:"Lower Quartile",med:"Median",uq:"Upper Quartile",lo:"Left Outlier",ro:"Right Outlier",lw:"Left Whisker",rw:"Right Whisker"}}}}},E='.jqstooltip { position: absolute;left: 0px;top: 0px;visibility: hidden;background: rgb(0, 0, 0) transparent;background-color: rgba(0,0,0,0.6);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000);-ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)";color: white;font: 10px arial, san serif;text-align: left;white-space: nowrap;padding: 5px;border: 1px solid white;z-index: 10000;}.jqsfield { color: white;font: 10px arial, san serif;text-align: left;}',g=function(){var a,b;return a=function(){this.init.apply(this,arguments)},arguments.length>1?(arguments[0]?(a.prototype=d.extend(new arguments[0],arguments[arguments.length-1]),a._super=arguments[0].prototype):a.prototype=arguments[arguments.length-1],arguments.length>2&&(b=Array.prototype.slice.call(arguments,1,-1),b.unshift(a.prototype),d.extend.apply(d,b))):a.prototype=arguments[0],a.prototype.cls=a,a},d.SPFormatClass=h=g({fre:/\{\{([\w.]+?)(:(.+?))?\}\}/g,precre:/(\w+)\.(\d+)/,init:function(a,b){this.format=a,this.fclass=b},render:function(a,b,d){var e=this,f=a,g,h,i,j,k;return this.format.replace(this.fre,function(){var a;return h=arguments[1],i=arguments[3],g=e.precre.exec(h),g?(k=g[2],h=g[1]):k=!1,j=f[h],j===c?"":i&&b&&b[i]?(a=b[i],a.get?b[i].get(j)||j:b[i][j]||j):(n(j)&&(d.get("numberFormatter")?j=d.get("numberFormatter")(j):j=s(j,k,d.get("numberDigitGroupCount"),d.get("numberDigitGroupSep"),d.get("numberDecimalMark"))),j)})}}),d.spformat=function(a,b){return new h(a,b)},i=function(a,b,c){return a<b?b:a>c?c:a},j=function(a,c){var d;return c===2?(d=b.floor(a.length/2),a.length%2?a[d]:(a[d-1]+a[d])/2):a.length%2?(d=(a.length*c+c)/4,d%1?(a[b.floor(d)]+a[b.floor(d)-1])/2:a[d-1]):(d=(a.length*c+2)/4,d%1?(a[b.floor(d)]+a[b.floor(d)-1])/2:a[d-1])},k=function(a){var b;switch(a){case"undefined":a=c;break;case"null":a=null;break;case"true":a=!0;break;case"false":a=!1;break;default:b=parseFloat(a),a==b&&(a=b)}return a},l=function(a){var b,c=[];for(b=a.length;b--;)c[b]=k(a[b]);return c},m=function(a,b){var c,d,e=[];for(c=0,d=a.length;c<d;c++)a[c]!==b&&e.push(a[c]);return e},n=function(a){return!isNaN(parseFloat(a))&&isFinite(a)},s=function(a,b,c,e,f){var g,h;a=(b===!1?parseFloat(a).toString():a.toFixed(b)).split(""),g=(g=d.inArray(".",a))<0?a.length:g,g<a.length&&(a[g]=f);for(h=g-c;h>0;h-=c)a.splice(h,0,e);return a.join("")},o=function(a,b,c){var d;for(d=b.length;d--;){if(c&&b[d]===null)continue;if(b[d]!==a)return!1}return!0},p=function(a){var b=0,c;for(c=a.length;c--;)b+=typeof a[c]=="number"?a[c]:0;return b},r=function(a){return d.isArray(a)?a:[a]},q=function(b){var c;a.createStyleSheet?a.createStyleSheet().cssText=b:(c=a.createElement("style"),c.type="text/css",a.getElementsByTagName("head")[0].appendChild(c),c[typeof a.body.style.WebkitAppearance=="string"?"innerText":"innerHTML"]=b)},d.fn.simpledraw=function(b,e,f,g){var h,i;if(f&&(h=this.data("_jqs_vcanvas")))return h;if(d.fn.sparkline.canvas===!1)return!1;if(d.fn.sparkline.canvas===c){var j=a.createElement("canvas");if(!j.getContext||!j.getContext("2d")){if(!a.namespaces||!!a.namespaces.v)return d.fn.sparkline.canvas=!1,!1;a.namespaces.add("v","urn:schemas-microsoft-com:vml","#default#VML"),d.fn.sparkline.canvas=function(a,b,c,d){return new J(a,b,c)}}else d.fn.sparkline.canvas=function(a,b,c,d){return new I(a,b,c,d)}}return b===c&&(b=d(this).innerWidth()),e===c&&(e=d(this).innerHeight()),h=d.fn.sparkline.canvas(b,e,this,g),i=d(this).data("_jqs_mhandler"),i&&i.registerCanvas(h),h},d.fn.cleardraw=function(){var a=this.data("_jqs_vcanvas");a&&a.reset()},d.RangeMapClass=t=g({init:function(a){var b,c,d=[];for(b in a)a.hasOwnProperty(b)&&typeof b=="string"&&b.indexOf(":")>-1&&(c=b.split(":"),c[0]=c[0].length===0?-Infinity:parseFloat(c[0]),c[1]=c[1].length===0?Infinity:parseFloat(c[1]),c[2]=a[b],d.push(c));this.map=a,this.rangelist=d||!1},get:function(a){var b=this.rangelist,d,e,f;if((f=this.map[a])!==c)return f;if(b)for(d=b.length;d--;){e=b[d];if(e[0]<=a&&e[1]>=a)return e[2]}return c}}),d.range_map=function(a){return new t(a)},u=g({init:function(a,b){var c=d(a);this.$el=c,this.options=b,this.currentPageX=0,this.currentPageY=0,this.el=a,this.splist=[],this.tooltip=null,this.over=!1,this.displayTooltips=!b.get("disableTooltips"),this.highlightEnabled=!b.get("disableHighlight")},registerSparkline:function(a){this.splist.push(a),this.over&&this.updateDisplay()},registerCanvas:function(a){var b=d(a.canvas);this.canvas=a,this.$canvas=b,b.mouseenter(d.proxy(this.mouseenter,this)),b.mouseleave(d.proxy(this.mouseleave,this)),b.click(d.proxy(this.mouseclick,this))},reset:function(a){this.splist=[],this.tooltip&&a&&(this.tooltip.remove(),this.tooltip=c)},mouseclick:function(a){var b=d.Event("sparklineClick");b.originalEvent=a,b.sparklines=this.splist,this.$el.trigger(b)},mouseenter:function(b){d(a.body).unbind("mousemove.jqs"),d(a.body).bind("mousemove.jqs",d.proxy(this.mousemove,this)),this.over=!0,this.currentPageX=b.pageX,this.currentPageY=b.pageY,this.currentEl=b.target,!this.tooltip&&this.displayTooltips&&(this.tooltip=new v(this.options),this.tooltip.updatePosition(b.pageX,b.pageY)),this.updateDisplay()},mouseleave:function(){d(a.body).unbind("mousemove.jqs");var b=this.splist,c=b.length,e=!1,f,g;this.over=!1,this.currentEl=null,this.tooltip&&(this.tooltip.remove(),this.tooltip=null);for(g=0;g<c;g++)f=b[g],f.clearRegionHighlight()&&(e=!0);e&&this.canvas.render()},mousemove:function(a){this.currentPageX=a.pageX,this.currentPageY=a.pageY,this.currentEl=a.target,this.tooltip&&this.tooltip.updatePosition(a.pageX,a.pageY),this.updateDisplay()},updateDisplay:function(){var a=this.splist,b=a.length,c=!1,e=this.$canvas.offset(),f=this.currentPageX-e.left,g=this.currentPageY-e.top,h,i,j,k,l;if(!this.over)return;for(j=0;j<b;j++)i=a[j],k=i.setRegionHighlight(this.currentEl,f,g),k&&(c=!0);if(c){l=d.Event("sparklineRegionChange"),l.sparklines=this.splist,this.$el.trigger(l);if(this.tooltip){h="";for(j=0;j<b;j++)i=a[j],h+=i.getCurrentRegionTooltip();this.tooltip.setContent(h)}this.disableHighlight||this.canvas.render()}k===null&&this.mouseleave()}}),v=g({sizeStyle:"position: static !important;display: block !important;visibility: hidden !important;float: left !important;",init:function(b){var c=b.get("tooltipClassname","jqstooltip"),e=this.sizeStyle,f;this.container=b.get("tooltipContainer")||a.body,this.tooltipOffsetX=b.get("tooltipOffsetX",10),this.tooltipOffsetY=b.get("tooltipOffsetY",12),d("#jqssizetip").remove(),d("#jqstooltip").remove(),this.sizetip=d("<div/>",{id:"jqssizetip",style:e,"class":c}),this.tooltip=d("<div/>",{id:"jqstooltip","class":c}).appendTo(this.container),f=this.tooltip.offset(),this.offsetLeft=f.left,this.offsetTop=f.top,this.hidden=!0,d(window).unbind("resize.jqs scroll.jqs"),d(window).bind("resize.jqs scroll.jqs",d.proxy(this.updateWindowDims,this)),this.updateWindowDims()},updateWindowDims:function(){this.scrollTop=d(window).scrollTop(),this.scrollLeft=d(window).scrollLeft(),this.scrollRight=this.scrollLeft+d(window).width(),this.updatePosition()},getSize:function(a){this.sizetip.html(a).appendTo(this.container),this.width=this.sizetip.width()+1,this.height=this.sizetip.height(),this.sizetip.remove()},setContent:function(a){if(!a){this.tooltip.css("visibility","hidden"),this.hidden=!0;return}this.getSize(a),this.tooltip.html(a).css({width:this.width,height:this.height,visibility:"visible"}),this.hidden&&(this.hidden=!1,this.updatePosition())},updatePosition:function(a,b){if(a===c){if(this.mousex===c)return;a=this.mousex-this.offsetLeft,b=this.mousey-this.offsetTop}else this.mousex=a-=this.offsetLeft,this.mousey=b-=this.offsetTop;if(!this.height||!this.width||this.hidden)return;b-=this.height+this.tooltipOffsetY,a+=this.tooltipOffsetX,b<this.scrollTop&&(b=this.scrollTop),a<this.scrollLeft?a=this.scrollLeft:a+this.width>this.scrollRight&&(a=this.scrollRight-this.width),this.tooltip.css({left:a,top:b})},remove:function(){this.tooltip.remove(),this.sizetip.remove(),this.sizetip=this.tooltip=c,d(window).unbind("resize.jqs scroll.jqs")}}),F=function(){q(E)},d(F),K=[],d.fn.sparkline=function(b,e){return this.each(function(){var f=new d.fn.sparkline.options(this,e),g=d(this),h,i;h=function(){var e,h,i,j,k,l,m;if(b==="html"||b===c){m=this.getAttribute(f.get("tagValuesAttribute"));if(m===c||m===null)m=g.html();e=m.replace(/(^\s*<!--)|(-->\s*$)|\s+/g,"").split(",")}else e=b;h=f.get("width")==="auto"?e.length*f.get("defaultPixelsPerValue"):f.get("width");if(f.get("height")==="auto"){if(!f.get("composite")||!d.data(this,"_jqs_vcanvas"))j=a.createElement("span"),j.innerHTML="a",g.html(j),i=d(j).innerHeight()||d(j).height(),d(j).remove(),j=null}else i=f.get("height");f.get("disableInteraction")?k=!1:(k=d.data(this,"_jqs_mhandler"),k?f.get("composite")||k.reset():(k=new u(this,f),d.data(this,"_jqs_mhandler",k)));if(f.get("composite")&&!d.data(this,"_jqs_vcanvas")){d.data(this,"_jqs_errnotify")||(alert("Attempted to attach a composite sparkline to an element with no existing sparkline"),d.data(this,"_jqs_errnotify",!0));return}l=new(d.fn.sparkline[f.get("type")])(this,e,f,h,i),l.render(),k&&k.registerSparkline(l)};if(d(this).html()&&!f.get("disableHiddenCheck")&&d(this).is(":hidden")||!d(this).parents("body").length){if(!f.get("composite")&&d.data(this,"_jqs_pending"))for(i=K.length;i;i--)K[i-1][0]==this&&K.splice(i-1,1);K.push([this,h]),d.data(this,"_jqs_pending",!0)}else h.call(this)})},d.fn.sparkline.defaults=f(),d.sparkline_display_visible=function(){var a,b,c,e=[];for(b=0,c=K.length;b<c;b++)a=K[b][0],d(a).is(":visible")&&!d(a).parents().is(":hidden")?(K[b][1].call(a),d.data(K[b][0],"_jqs_pending",!1),e.push(b)):!d(a).closest("html").length&&!d.data(a,"_jqs_pending")&&(d.data(K[b][0],"_jqs_pending",!1),e.push(b));for(b=e.length;b;b--)K.splice(e[b-1],1)},d.fn.sparkline.options=g({init:function(a,b){var c,f,g,h;this.userOptions=b=b||{},this.tag=a,this.tagValCache={},f=d.fn.sparkline.defaults,g=f.common,this.tagOptionsPrefix=b.enableTagOptions&&(b.tagOptionsPrefix||g.tagOptionsPrefix),h=this.getTagSetting("type"),h===e?c=f[b.type||g.type]:c=f[h],this.mergedOptions=d.extend({},g,c,b)},getTagSetting:function(a){var b=this.tagOptionsPrefix,d,f,g,h;if(b===!1||b===c)return e;if(this.tagValCache.hasOwnProperty(a))d=this.tagValCache.key;else{d=this.tag.getAttribute(b+a);if(d===c||d===null)d=e;else if(d.substr(0,1)==="["){d=d.substr(1,d.length-2).split(",");for(f=d.length;f--;)d[f]=k(d[f].replace(/(^\s*)|(\s*$)/g,""))}else if(d.substr(0,1)==="{"){g=d.substr(1,d.length-2).split(","),d={};for(f=g.length;f--;)h=g[f].split(":",2),d[h[0].replace(/(^\s*)|(\s*$)/g,"")]=k(h[1].replace(/(^\s*)|(\s*$)/g,""))}else d=k(d);this.tagValCache.key=d}return d},get:function(a,b){var d=this.getTagSetting(a),f;return d!==e?d:(f=this.mergedOptions[a])===c?b:f}}),d.fn.sparkline._base=g({disabled:!1,init:function(a,b,e,f,g){this.el=a,this.$el=d(a),this.values=b,this.options=e,this.width=f,this.height=g,this.currentRegion=c},initTarget:function(){var a=!this.options.get("disableInteraction");(this.target=this.$el.simpledraw(this.width,this.height,this.options.get("composite"),a))?(this.canvasWidth=this.target.pixelWidth,this.canvasHeight=this.target.pixelHeight):this.disabled=!0},render:function(){return this.disabled?(this.el.innerHTML="",!1):!0},getRegion:function(a,b){},setRegionHighlight:function(a,b,d){var e=this.currentRegion,f=!this.options.get("disableHighlight"),g;return b>this.canvasWidth||d>this.canvasHeight||b<0||d<0?null:(g=this.getRegion(a,b,d),e!==g?(e!==c&&f&&this.removeHighlight(),this.currentRegion=g,g!==c&&f&&this.renderHighlight(),!0):!1)},clearRegionHighlight:function(){return this.currentRegion!==c?(this.removeHighlight(),this.currentRegion=c,!0):!1},renderHighlight:function(){this.changeHighlight(!0)},removeHighlight:function(){this.changeHighlight(!1)},changeHighlight:function(a){},getCurrentRegionTooltip:function(){var a=this.options,b="",e=[],f,g,i,j,k,l,m,n,o,p,q,r,s,t;if(this.currentRegion===c)return"";f=this.getCurrentRegionFields(),q=a.get("tooltipFormatter");if(q)return q(this,a,f);a.get("tooltipChartTitle")&&(b+='<div class="jqs jqstitle">'+a.get("tooltipChartTitle")+"</div>\n"),g=this.options.get("tooltipFormat");if(!g)return"";d.isArray(g)||(g=[g]),d.isArray(f)||(f=[f]),m=this.options.get("tooltipFormatFieldlist"),n=this.options.get("tooltipFormatFieldlistKey");if(m&&n){o=[];for(l=f.length;l--;)p=f[l][n],(t=d.inArray(p,m))!=-1&&(o[t]=f[l]);f=o}i=g.length,s=f.length;for(l=0;l<i;l++){r=g[l],typeof r=="string"&&(r=new h(r)),j=r.fclass||"jqsfield";for(t=0;t<s;t++)if(!f[t].isNull||!a.get("tooltipSkipNull"))d.extend(f[t],{prefix:a.get("tooltipPrefix"),suffix:a.get("tooltipSuffix")}),k=r.render(f[t],a.get("tooltipValueLookups"),a),e.push('<div class="'+j+'">'+k+"</div>")}return e.length?b+e.join("\n"):""},getCurrentRegionFields:function(){},calcHighlightColor:function(a,c){var d=c.get("highlightColor"),e=c.get("highlightLighten"),f,g,h,j;if(d)return d;if(e){f=/^#([0-9a-f])([0-9a-f])([0-9a-f])$/i.exec(a)||/^#([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i.exec(a);if(f){h=[],g=a.length===4?16:1;for(j=0;j<3;j++)h[j]=i(b.round(parseInt(f[j+1],16)*g*e),0,255);return"rgb("+h.join(",")+")"}}return a}}),w={changeHighlight:function(a){var b=this.currentRegion,c=this.target,e=this.regionShapes[b],f;e&&(f=this.renderRegion(b,a),d.isArray(f)||d.isArray(e)?(c.replaceWithShapes(e,f),this.regionShapes[b]=d.map(f,function(a){return a.id})):(c.replaceWithShape(e,f),this.regionShapes[b]=f.id))},render:function(){var a=this.values,b=this.target,c=this.regionShapes,e,f,g,h;if(!this.cls._super.render.call(this))return;for(g=a.length;g--;){e=this.renderRegion(g);if(e)if(d.isArray(e)){f=[];for(h=e.length;h--;)e[h].append(),f.push(e[h].id);c[g]=f}else e.append(),c[g]=e.id;else c[g]=null}b.render()}},d.fn.sparkline.line=x=g(d.fn.sparkline._base,{type:"line",init:function(a,b,c,d,e){x._super.init.call(this,a,b,c,d,e),this.vertices=[],this.regionMap=[],this.xvalues=[],this.yvalues=[],this.yminmax=[],this.hightlightSpotId=null,this.lastShapeId=null,this.initTarget()},getRegion:function(a,b,d){var e,f=this.regionMap;for(e=f.length;e--;)if(f[e]!==null&&b>=f[e][0]&&b<=f[e][1])return f[e][2];return c},getCurrentRegionFields:function(){var a=this.currentRegion;return{isNull:this.yvalues[a]===null,x:this.xvalues[a],y:this.yvalues[a],color:this.options.get("lineColor"),fillColor:this.options.get("fillColor"),offset:a}},renderHighlight:function(){var a=this.currentRegion,b=this.target,d=this.vertices[a],e=this.options,f=e.get("spotRadius"),g=e.get("highlightSpotColor"),h=e.get("highlightLineColor"),i,j;if(!d)return;f&&g&&(i=b.drawCircle(d[0],d[1],f,c,g),this.highlightSpotId=i.id,b.insertAfterShape(this.lastShapeId,i)),h&&(j=b.drawLine(d[0],this.canvasTop,d[0],this.canvasTop+this.canvasHeight,h),this.highlightLineId=j.id,b.insertAfterShape(this.lastShapeId,j))},removeHighlight:function(){var a=this.target;this.highlightSpotId&&(a.removeShapeId(this.highlightSpotId),this.highlightSpotId=null),this.highlightLineId&&(a.removeShapeId(this.highlightLineId),this.highlightLineId=null)},scanValues:function(){var a=this.values,c=a.length,d=this.xvalues,e=this.yvalues,f=this.yminmax,g,h,i,j,k;for(g=0;g<c;g++)h=a[g],i=typeof a[g]=="string",j=typeof a[g]=="object"&&a[g]instanceof Array,k=i&&a[g].split(":"),i&&k.length===2?(d.push(Number(k[0])),e.push(Number(k[1])),f.push(Number(k[1]))):j?(d.push(h[0]),e.push(h[1]),f.push(h[1])):(d.push(g),a[g]===null||a[g]==="null"?e.push(null):(e.push(Number(h)),f.push(Number(h))));this.options.get("xvalues")&&(d=this.options.get("xvalues")),this.maxy=this.maxyorg=b.max.apply(b,f),this.miny=this.minyorg=b.min.apply(b,f),this.maxx=b.max.apply(b,d),this.minx=b.min.apply(b,d),this.xvalues=d,this.yvalues=e,this.yminmax=f},processRangeOptions:function(){var a=this.options,b=a.get("normalRangeMin"),d=a.get("normalRangeMax");b!==c&&(b<this.miny&&(this.miny=b),d>this.maxy&&(this.maxy=d)),a.get("chartRangeMin")!==c&&(a.get("chartRangeClip")||a.get("chartRangeMin")<this.miny)&&(this.miny=a.get("chartRangeMin")),a.get("chartRangeMax")!==c&&(a.get("chartRangeClip")||a.get("chartRangeMax")>this.maxy)&&(this.maxy=a.get("chartRangeMax")),a.get("chartRangeMinX")!==c&&(a.get("chartRangeClipX")||a.get("chartRangeMinX")<this.minx)&&(this.minx=a.get("chartRangeMinX")),a.get("chartRangeMaxX")!==c&&(a.get("chartRangeClipX")||a.get("chartRangeMaxX")>this.maxx)&&(this.maxx=a.get("chartRangeMaxX"))},drawNormalRange:function(a,d,e,f,g){var h=this.options.get("normalRangeMin"),i=this.options.get("normalRangeMax"),j=d+b.round(e-e*((i-this.miny)/g)),k=b.round(e*(i-h)/g);this.target.drawRect(a,j,f,k,c,this.options.get("normalRangeColor")).append()},render:function(){var a=this.options,e=this.target,f=this.canvasWidth,g=this.canvasHeight,h=this.vertices,i=a.get("spotRadius"),j=this.regionMap,k,l,m,n,o,p,q,r,s,u,v,w,y,z,A,B,C,D,E,F,G,H,I,J,K;if(!x._super.render.call(this))return;this.scanValues(),this.processRangeOptions(),I=this.xvalues,J=this.yvalues;if(!this.yminmax.length||this.yvalues.length<2)return;n=o=0,k=this.maxx-this.minx===0?1:this.maxx-this.minx,l=this.maxy-this.miny===0?1:this.maxy-this.miny,m=this.yvalues.length-1,i&&(f<i*4||g<i*4)&&(i=0);if(i){G=a.get("highlightSpotColor")&&!a.get("disableInteraction");if(G||a.get("minSpotColor")||a.get("spotColor")&&J[m]===this.miny)g-=b.ceil(i);if(G||a.get("maxSpotColor")||a.get("spotColor")&&J[m]===this.maxy)g-=b.ceil(i),n+=b.ceil(i);if(G||(a.get("minSpotColor")||a.get("maxSpotColor"))&&(J[0]===this.miny||J[0]===this.maxy))o+=b.ceil(i),f-=b.ceil(i);if(G||a.get("spotColor")||a.get("minSpotColor")||a.get("maxSpotColor")&&(J[m]===this.miny||J[m]===this.maxy))f-=b.ceil(i)}g--,a.get("normalRangeMin")!==c&&!a.get("drawNormalOnTop")&&this.drawNormalRange(o,n,g,f,l),q=[],r=[q],z=A=null,B=J.length;for(K=0;K<B;K++)s=I[K],v=I[K+1],u=J[K],w=o+b.round((s-this.minx)*(f/k)),y=K<B-1?o+b.round((v-this.minx)*(f/k)):f,A=w+(y-w)/2,j[K]=[z||0,A,K],z=A,u===null?K&&(J[K-1]!==null&&(q=[],r.push(q)),h.push(null)):(u<this.miny&&(u=this.miny),u>this.maxy&&(u=this.maxy),q.length||q.push([w,n+g]),p=[w,n+b.round(g-g*((u-this.miny)/l))],q.push(p),h.push(p));C=[],D=[],E=r.length;for(K=0;K<E;K++)q=r[K],q.length&&(a.get("fillColor")&&(q.push([q[q.length-1][0],n+g]),D.push(q.slice(0)),q.pop()),q.length>2&&(q[0]=[q[0][0],q[1][1]]),C.push(q));E=D.length;for(K=0;K<E;K++)e.drawShape(D[K],a.get("fillColor"),a.get("fillColor")).append();a.get("normalRangeMin")!==c&&a.get("drawNormalOnTop")&&this.drawNormalRange(o,n,g,f,l),E=C.length;for(K=0;K<E;K++)e.drawShape(C[K],a.get("lineColor"),c,a.get("lineWidth")).append();if(i&&a.get("valueSpots")){F=a.get("valueSpots"),F.get===c&&(F=new t(F));for(K=0;K<B;K++)H=F.get(J[K]),H&&e.drawCircle(o+b.round((I[K]-this.minx)*(f/k)),n+b.round(g-g*((J[K]-this.miny)/l)),i,c,H).append()}i&&a.get("spotColor")&&J[m]!==null&&e.drawCircle(o+b.round((I[I.length-1]-this.minx)*(f/k)),n+b.round(g-g*((J[m]-this.miny)/l)),i,c,a.get("spotColor")).append(),this.maxy!==this.minyorg&&(i&&a.get("minSpotColor")&&(s=I[d.inArray(this.minyorg,J)],e.drawCircle(o+b.round((s-this.minx)*(f/k)),n+b.round(g-g*((this.minyorg-this.miny)/l)),i,c,a.get("minSpotColor")).append()),i&&a.get("maxSpotColor")&&(s=I[d.inArray(this.maxyorg,J)],e.drawCircle(o+b.round((s-this.minx)*(f/k)),n+b.round(g-g*((this.maxyorg-this.miny)/l)),i,c,a.get("maxSpotColor")).append())),this.lastShapeId=e.getLastShapeId(),this.canvasTop=n,e.render()}}),d.fn.sparkline.bar=y=g(d.fn.sparkline._base,w,{type:"bar",init:function(a,e,f,g,h){var j=parseInt(f.get("barWidth"),10),n=parseInt(f.get("barSpacing"),10),o=f.get("chartRangeMin"),p=f.get("chartRangeMax"),q=f.get("chartRangeClip"),r=Infinity,s=-Infinity,u,v,w,x,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R;y._super.init.call(this,a,e,f,g,h);for(A=0,B=e.length;A<B;A++){O=e[A],u=typeof O=="string"&&O.indexOf(":")>-1;if(u||d.isArray(O))J=!0,u&&(O=e[A]=l(O.split(":"))),O=m(O,null),v=b.min.apply(b,O),w=b.max.apply(b,O),v<r&&(r=v),w>s&&(s=w)}this.stacked=J,this.regionShapes={},this.barWidth=j,this.barSpacing=n,this.totalBarWidth=j+n,this.width=g=e.length*j+(e.length-1)*n,this.initTarget(),q&&(H=o===c?-Infinity:o,I=p===c?Infinity:p),z=[],x=J?[]:z;var S=[],T=[];for(A=0,B=e.length;A<B;A++)if(J){K=e[A],e[A]=N=[],S[A]=0,x[A]=T[A]=0;for(L=0,M=K.length;L<M;L++)O=N[L]=q?i(K[L],H,I):K[L],O!==null&&(O>0&&(S[A]+=O),r<0&&s>0?O<0?T[A]+=b.abs(O):x[A]+=O:x[A]+=b.abs(O-(O<0?s:r)),z.push(O))}else O=q?i(e[A],H,I):e[A],O=e[A]=k(O),O!==null&&z.push(O);this.max=G=b.max.apply(b,z),this.min=F=b.min.apply(b,z),this.stackMax=s=J?b.max.apply(b,S):G,this.stackMin=r=J?b.min.apply(b,z):F,f.get("chartRangeMin")!==c&&(f.get("chartRangeClip")||f.get("chartRangeMin")<F)&&(F=f.get("chartRangeMin")),f.get("chartRangeMax")!==c&&(f.get("chartRangeClip")||f.get("chartRangeMax")>G)&&(G=f.get("chartRangeMax")),this.zeroAxis=D=f.get("zeroAxis",!0),F<=0&&G>=0&&D?E=0:D==0?E=F:F>0?E=F:E=G,this.xaxisOffset=E,C=J?b.max.apply(b,x)+b.max.apply(b,T):G-F,this.canvasHeightEf=D&&F<0?this.canvasHeight-2:this.canvasHeight-1,F<E?(Q=J&&G>=0?s:G,P=(Q-E)/C*this.canvasHeight,P!==b.ceil(P)&&(this.canvasHeightEf-=2,P=b.ceil(P))):P=this.canvasHeight,this.yoffset=P,d.isArray(f.get("colorMap"))?(this.colorMapByIndex=f.get("colorMap"),this.colorMapByValue=null):(this.colorMapByIndex=null,this.colorMapByValue=f.get("colorMap"),this.colorMapByValue&&this.colorMapByValue.get===c&&(this.colorMapByValue=new t(this.colorMapByValue))),this.range=C},getRegion:function(a,d,e){var f=b.floor(d/this.totalBarWidth);return f<0||f>=this.values.length?c:f},getCurrentRegionFields:function(){var a=this.currentRegion,b=r(this.values[a]),c=[],d,e;for(e=b.length;e--;)d=b[e],c.push({isNull:d===null,value:d,color:this.calcColor(e,d,a),offset:a});return c},calcColor:function(a,b,e){var f=this.colorMapByIndex,g=this.colorMapByValue,h=this.options,i,j;return this.stacked?i=h.get("stackedBarColor"):i=b<0?h.get("negBarColor"):h.get("barColor"),b===0&&h.get("zeroColor")!==c&&(i=h.get("zeroColor")),g&&(j=g.get(b))?i=j:f&&f.length>e&&(i=f[e]),d.isArray(i)?i[a%i.length]:i},renderRegion:function(a,e){var f=this.values[a],g=this.options,h=this.xaxisOffset,i=[],j=this.range,k=this.stacked,l=this.target,m=a*this.totalBarWidth,n=this.canvasHeightEf,p=this.yoffset,q,r,s,t,u,v,w,x,y,z;f=d.isArray(f)?f:[f],w=f.length,x=f[0],t=o(null,f),z=o(h,f,!0);if(t)return g.get("nullColor")?(s=e?g.get("nullColor"):this.calcHighlightColor(g.get("nullColor"),g),q=p>0?p-1:p,l.drawRect(m,q,this.barWidth-1,0,s,s)):c;u=p;for(v=0;v<w;v++){x=f[v];if(k&&x===h){if(!z||y)continue;y=!0}j>0?r=b.floor(n*(b.abs(x-h)/j))+1:r=1,x<h||x===h&&p===0?(q=u,u+=r):(q=p-r,p-=r),s=this.calcColor(v,x,a),e&&(s=this.calcHighlightColor(s,g)),i.push(l.drawRect(m,q,this.barWidth-1,r-1,s,s))}return i.length===1?i[0]:i}}),d.fn.sparkline.tristate=z=g(d.fn.sparkline._base,w,{type:"tristate",init:function(a,b,e,f,g){var h=parseInt(e.get("barWidth"),10),i=parseInt(e.get("barSpacing"),10);z._super.init.call(this,a,b,e,f,g),this.regionShapes={},this.barWidth=h,this.barSpacing=i,this.totalBarWidth=h+i,this.values=d.map(b,Number),this.width=f=b.length*h+(b.length-1)*i,d.isArray(e.get("colorMap"))?(this.colorMapByIndex=e.get("colorMap"),this.colorMapByValue=null):(this.colorMapByIndex=null,this.colorMapByValue=e.get("colorMap"),this.colorMapByValue&&this.colorMapByValue.get===c&&(this.colorMapByValue=new t(this.colorMapByValue))),this.initTarget()},getRegion:function(a,c,d){return b.floor(c/this.totalBarWidth)},getCurrentRegionFields:function(){var a=this.currentRegion;return{isNull:this.values[a]===c,value:this.values[a],color:this.calcColor(this.values[a],a),offset:a}},calcColor:function(a,b){var c=this.values,d=this.options,e=this.colorMapByIndex,f=this.colorMapByValue,g,h;return f&&(h=f.get(a))?g=h:e&&e.length>b?g=e[b]:c[b]<0?g=d.get("negBarColor"):c[b]>0?g=d.get("posBarColor"):g=d.get("zeroBarColor"),g},renderRegion:function(a,c){var d=this.values,e=this.options,f=this.target,g,h,i,j,k,l;g=f.pixelHeight,i=b.round(g/2),j=a*this.totalBarWidth,d[a]<0?(k=i,h=i-1):d[a]>0?(k=0,h=i-1):(k=i-1,h=2),l=this.calcColor(d[a],a);if(l===null)return;return c&&(l=this.calcHighlightColor(l,e)),f.drawRect(j,k,this.barWidth-1,h-1,l,l)}}),d.fn.sparkline.discrete=A=g(d.fn.sparkline._base,w,{type:"discrete",init:function(a,e,f,g,h){A._super.init.call(this,a,e,f,g,h),this.regionShapes={},this.values=e=d.map(e,Number),this.min=b.min.apply(b,e),this.max=b.max.apply(b,e),this.range=this.max-this.min,this.width=g=f.get("width")==="auto"?e.length*2:this.width,this.interval=b.floor(g/e.length),this.itemWidth=g/e.length,f.get("chartRangeMin")!==c&&(f.get("chartRangeClip")||f.get("chartRangeMin")<this.min)&&(this.min=f.get("chartRangeMin")),f.get("chartRangeMax")!==c&&(f.get("chartRangeClip")||f.get("chartRangeMax")>this.max)&&(this.max=f.get("chartRangeMax")),this.initTarget(),this.target&&(this.lineHeight=f.get("lineHeight")==="auto"?b.round(this.canvasHeight*.3):f.get("lineHeight"))},getRegion:function(a,c,d){return b.floor(c/this.itemWidth)},getCurrentRegionFields:function(){var a=this.currentRegion;return{isNull:this.values[a]===c,value:this.values[a],offset:a}},renderRegion:function(a,c){var d=this.values,e=this.options,f=this.min,g=this.max,h=this.range,j=this.interval,k=this.target,l=this.canvasHeight,m=this.lineHeight,n=l-m,o,p,q,r;return p=i(d[a],f,g),r=a*j,o=b.round(n-n*((p-f)/h)),q=e.get("thresholdColor")&&p<e.get("thresholdValue")?e.get("thresholdColor"):e.get("lineColor"),c&&(q=this.calcHighlightColor(q,e)),k.drawLine(r,o,r,o+m,q)}}),d.fn.sparkline.bullet=B=g(d.fn.sparkline._base,{type:"bullet",init:function(a,d,e,f,g){var h,i,j;B._super.init.call(this,a,d,e,f,g),this.values=d=l(d),j=d.slice(),j[0]=j[0]===null?j[2]:j[0],j[1]=d[1]===null?j[2]:j[1],h=b.min.apply(b,d),i=b.max.apply(b,d),e.get("base")===c?h=h<0?h:0:h=e.get("base"),this.min=h,this.max=i,this.range=i-h,this.shapes={},this.valueShapes={},this.regiondata={},this.width=f=e.get("width")==="auto"?"4.0em":f,this.target=this.$el.simpledraw(f,g,e.get("composite")),d.length||(this.disabled=!0),this.initTarget()},getRegion:function(a,b,d){var e=this.target.getShapeAt(a,b,d);return e!==c&&this.shapes[e]!==c?this.shapes[e]:c},getCurrentRegionFields:function(){var a=this.currentRegion;return{fieldkey:a.substr(0,1),value:this.values[a.substr(1)],region:a}},changeHighlight:function(a){var b=this.currentRegion,c=this.valueShapes[b],d;delete this.shapes[c];switch(b.substr(0,1)){case"r":d=this.renderRange(b.substr(1),a);break;case"p":d=this.renderPerformance(a);break;case"t":d=this.renderTarget(a)}this.valueShapes[b]=d.id,this.shapes[d.id]=b,this.target.replaceWithShape(c,d)},renderRange:function(a,c){var d=this.values[a],e=b.round(this.canvasWidth*((d-this.min)/this.range)),f=this.options.get("rangeColors")[a-2];return c&&(f=this.calcHighlightColor(f,this.options)),this.target.drawRect(0,0,e-1,this.canvasHeight-1,f,f)},renderPerformance:function(a){var c=this.values[1],d=b.round(this.canvasWidth*((c-this.min)/this.range)),e=this.options.get("performanceColor");return a&&(e=this.calcHighlightColor(e,this.options)),this.target.drawRect(0,b.round(this.canvasHeight*.3),d-1,b.round(this.canvasHeight*.4)-1,e,e)},renderTarget:function(a){var c=this.values[0],d=b.round(this.canvasWidth*((c-this.min)/this.range)-this.options.get("targetWidth")/2),e=b.round(this.canvasHeight*.1),f=this.canvasHeight-e*2,g=this.options.get("targetColor");return a&&(g=this.calcHighlightColor(g,this.options)),this.target.drawRect(d,e,this.options.get("targetWidth")-1,f-1,g,g)},render:function(){var a=this.values.length,b=this.target,c,d;if(!B._super.render.call(this))return;for(c=2;c<a;c++)d=this.renderRange(c).append(),this.shapes[d.id]="r"+c,this.valueShapes["r"+c]=d.id;this.values[1]!==null&&(d=this.renderPerformance().append(),this.shapes[d.id]="p1",this.valueShapes.p1=d.id),this.values[0]!==null&&(d=this.renderTarget().append(),this.shapes[d.id]="t0",this.valueShapes.t0=d.id),b.render()}}),d.fn.sparkline.pie=C=g(d.fn.sparkline._base,{type:"pie",init:function(a,c,e,f,g){var h=0,i;C._super.init.call(this,a,c,e,f,g),this.shapes={},this.valueShapes={},this.values=c=d.map(c,Number),e.get("width")==="auto"&&(this.width=this.height);if(c.length>0)for(i=c.length;i--;)h+=c[i];this.total=h,this.initTarget(),this.radius=b.floor(b.min(this.canvasWidth,this.canvasHeight)/2)},getRegion:function(a,b,d){var e=this.target.getShapeAt(a,b,d);return e!==c&&this.shapes[e]!==c?this.shapes[e]:c},getCurrentRegionFields:function(){var a=this.currentRegion;return{isNull:this.values[a]===c,value:this.values[a],percent:this.values[a]/this.total*100,color:this.options.get("sliceColors")[a%this.options.get("sliceColors").length],offset:a}},changeHighlight:function(a){var b=this.currentRegion,c=this.renderSlice(b,a),d=this.valueShapes[b];delete this.shapes[d],this.target.replaceWithShape(d,c),this.valueShapes[b]=c.id,this.shapes[c.id]=b},renderSlice:function(a,d){var e=this.target,f=this.options,g=this.radius,h=f.get("borderWidth"),i=f.get("offset"),j=2*b.PI,k=this.values,l=this.total,m=i?2*b.PI*(i/360):0,n,o,p,q,r;q=k.length;for(p=0;p<q;p++){n=m,o=m,l>0&&(o=m+j*(k[p]/l));if(a===p)return r=f.get("sliceColors")[p%f.get("sliceColors").length],d&&(r=this.calcHighlightColor(r,f)),e.drawPieSlice(g,g,g-h,n,o,c,r);m=o}},render:function(){var a=this.target,d=this.values,e=this.options,f=this.radius,g=e.get("borderWidth"),h,i;if(!C._super.render.call(this))return;g&&a.drawCircle(f,f,b.floor(f-g/2),e.get("borderColor"),c,g).append();for(i=d.length;i--;)d[i]&&(h=this.renderSlice(i).append(),this.valueShapes[i]=h.id,this.shapes[h.id]=i);a.render()}}),d.fn.sparkline.box=D=g(d.fn.sparkline._base,{type:"box",init:function(a,b,c,e,f){D._super.init.call(this,a,b,c,e,f),this.values=d.map(b,Number),this.width=c.get("width")==="auto"?"4.0em":e,this.initTarget(),this.values.length||(this.disabled=1)},getRegion:function(){return 1},getCurrentRegionFields:function(){var a=[{field:"lq",value:this.quartiles[0]},{field:"med",value:this.quartiles
[1]},{field:"uq",value:this.quartiles[2]}];return this.loutlier!==c&&a.push({field:"lo",value:this.loutlier}),this.routlier!==c&&a.push({field:"ro",value:this.routlier}),this.lwhisker!==c&&a.push({field:"lw",value:this.lwhisker}),this.rwhisker!==c&&a.push({field:"rw",value:this.rwhisker}),a},render:function(){var a=this.target,d=this.values,e=d.length,f=this.options,g=this.canvasWidth,h=this.canvasHeight,i=f.get("chartRangeMin")===c?b.min.apply(b,d):f.get("chartRangeMin"),k=f.get("chartRangeMax")===c?b.max.apply(b,d):f.get("chartRangeMax"),l=0,m,n,o,p,q,r,s,t,u,v,w;if(!D._super.render.call(this))return;if(f.get("raw"))f.get("showOutliers")&&d.length>5?(n=d[0],m=d[1],p=d[2],q=d[3],r=d[4],s=d[5],t=d[6]):(m=d[0],p=d[1],q=d[2],r=d[3],s=d[4]);else{d.sort(function(a,b){return a-b}),p=j(d,1),q=j(d,2),r=j(d,3),o=r-p;if(f.get("showOutliers")){m=s=c;for(u=0;u<e;u++)m===c&&d[u]>p-o*f.get("outlierIQR")&&(m=d[u]),d[u]<r+o*f.get("outlierIQR")&&(s=d[u]);n=d[0],t=d[e-1]}else m=d[0],s=d[e-1]}this.quartiles=[p,q,r],this.lwhisker=m,this.rwhisker=s,this.loutlier=n,this.routlier=t,w=g/(k-i+1),f.get("showOutliers")&&(l=b.ceil(f.get("spotRadius")),g-=2*b.ceil(f.get("spotRadius")),w=g/(k-i+1),n<m&&a.drawCircle((n-i)*w+l,h/2,f.get("spotRadius"),f.get("outlierLineColor"),f.get("outlierFillColor")).append(),t>s&&a.drawCircle((t-i)*w+l,h/2,f.get("spotRadius"),f.get("outlierLineColor"),f.get("outlierFillColor")).append()),a.drawRect(b.round((p-i)*w+l),b.round(h*.1),b.round((r-p)*w),b.round(h*.8),f.get("boxLineColor"),f.get("boxFillColor")).append(),a.drawLine(b.round((m-i)*w+l),b.round(h/2),b.round((p-i)*w+l),b.round(h/2),f.get("lineColor")).append(),a.drawLine(b.round((m-i)*w+l),b.round(h/4),b.round((m-i)*w+l),b.round(h-h/4),f.get("whiskerColor")).append(),a.drawLine(b.round((s-i)*w+l),b.round(h/2),b.round((r-i)*w+l),b.round(h/2),f.get("lineColor")).append(),a.drawLine(b.round((s-i)*w+l),b.round(h/4),b.round((s-i)*w+l),b.round(h-h/4),f.get("whiskerColor")).append(),a.drawLine(b.round((q-i)*w+l),b.round(h*.1),b.round((q-i)*w+l),b.round(h*.9),f.get("medianColor")).append(),f.get("target")&&(v=b.ceil(f.get("spotRadius")),a.drawLine(b.round((f.get("target")-i)*w+l),b.round(h/2-v),b.round((f.get("target")-i)*w+l),b.round(h/2+v),f.get("targetColor")).append(),a.drawLine(b.round((f.get("target")-i)*w+l-v),b.round(h/2),b.round((f.get("target")-i)*w+l+v),b.round(h/2),f.get("targetColor")).append()),a.render()}}),G=g({init:function(a,b,c,d){this.target=a,this.id=b,this.type=c,this.args=d},append:function(){return this.target.appendShape(this),this}}),H=g({_pxregex:/(\d+)(px)?\s*$/i,init:function(a,b,c){if(!a)return;this.width=a,this.height=b,this.target=c,this.lastShapeId=null,c[0]&&(c=c[0]),d.data(c,"_jqs_vcanvas",this)},drawLine:function(a,b,c,d,e,f){return this.drawShape([[a,b],[c,d]],e,f)},drawShape:function(a,b,c,d){return this._genShape("Shape",[a,b,c,d])},drawCircle:function(a,b,c,d,e,f){return this._genShape("Circle",[a,b,c,d,e,f])},drawPieSlice:function(a,b,c,d,e,f,g){return this._genShape("PieSlice",[a,b,c,d,e,f,g])},drawRect:function(a,b,c,d,e,f){return this._genShape("Rect",[a,b,c,d,e,f])},getElement:function(){return this.canvas},getLastShapeId:function(){return this.lastShapeId},reset:function(){alert("reset not implemented")},_insert:function(a,b){d(b).html(a)},_calculatePixelDims:function(a,b,c){var e;e=this._pxregex.exec(b),e?this.pixelHeight=e[1]:this.pixelHeight=d(c).height(),e=this._pxregex.exec(a),e?this.pixelWidth=e[1]:this.pixelWidth=d(c).width()},_genShape:function(a,b){var c=L++;return b.unshift(c),new G(this,c,a,b)},appendShape:function(a){alert("appendShape not implemented")},replaceWithShape:function(a,b){alert("replaceWithShape not implemented")},insertAfterShape:function(a,b){alert("insertAfterShape not implemented")},removeShapeId:function(a){alert("removeShapeId not implemented")},getShapeAt:function(a,b,c){alert("getShapeAt not implemented")},render:function(){alert("render not implemented")}}),I=g(H,{init:function(b,e,f,g){I._super.init.call(this,b,e,f),this.canvas=a.createElement("canvas"),f[0]&&(f=f[0]),d.data(f,"_jqs_vcanvas",this),d(this.canvas).css({display:"inline-block",width:b,height:e,verticalAlign:"top"}),this._insert(this.canvas,f),this._calculatePixelDims(b,e,this.canvas),this.canvas.width=this.pixelWidth,this.canvas.height=this.pixelHeight,this.interact=g,this.shapes={},this.shapeseq=[],this.currentTargetShapeId=c,d(this.canvas).css({width:this.pixelWidth,height:this.pixelHeight})},_getContext:function(a,b,d){var e=this.canvas.getContext("2d");return a!==c&&(e.strokeStyle=a),e.lineWidth=d===c?1:d,b!==c&&(e.fillStyle=b),e},reset:function(){var a=this._getContext();a.clearRect(0,0,this.pixelWidth,this.pixelHeight),this.shapes={},this.shapeseq=[],this.currentTargetShapeId=c},_drawShape:function(a,b,d,e,f){var g=this._getContext(d,e,f),h,i;g.beginPath(),g.moveTo(b[0][0]+.5,b[0][1]+.5);for(h=1,i=b.length;h<i;h++)g.lineTo(b[h][0]+.5,b[h][1]+.5);d!==c&&g.stroke(),e!==c&&g.fill(),this.targetX!==c&&this.targetY!==c&&g.isPointInPath(this.targetX,this.targetY)&&(this.currentTargetShapeId=a)},_drawCircle:function(a,d,e,f,g,h,i){var j=this._getContext(g,h,i);j.beginPath(),j.arc(d,e,f,0,2*b.PI,!1),this.targetX!==c&&this.targetY!==c&&j.isPointInPath(this.targetX,this.targetY)&&(this.currentTargetShapeId=a),g!==c&&j.stroke(),h!==c&&j.fill()},_drawPieSlice:function(a,b,d,e,f,g,h,i){var j=this._getContext(h,i);j.beginPath(),j.moveTo(b,d),j.arc(b,d,e,f,g,!1),j.lineTo(b,d),j.closePath(),h!==c&&j.stroke(),i&&j.fill(),this.targetX!==c&&this.targetY!==c&&j.isPointInPath(this.targetX,this.targetY)&&(this.currentTargetShapeId=a)},_drawRect:function(a,b,c,d,e,f,g){return this._drawShape(a,[[b,c],[b+d,c],[b+d,c+e],[b,c+e],[b,c]],f,g)},appendShape:function(a){return this.shapes[a.id]=a,this.shapeseq.push(a.id),this.lastShapeId=a.id,a.id},replaceWithShape:function(a,b){var c=this.shapeseq,d;this.shapes[b.id]=b;for(d=c.length;d--;)c[d]==a&&(c[d]=b.id);delete this.shapes[a]},replaceWithShapes:function(a,b){var c=this.shapeseq,d={},e,f,g;for(f=a.length;f--;)d[a[f]]=!0;for(f=c.length;f--;)e=c[f],d[e]&&(c.splice(f,1),delete this.shapes[e],g=f);for(f=b.length;f--;)c.splice(g,0,b[f].id),this.shapes[b[f].id]=b[f]},insertAfterShape:function(a,b){var c=this.shapeseq,d;for(d=c.length;d--;)if(c[d]===a){c.splice(d+1,0,b.id),this.shapes[b.id]=b;return}},removeShapeId:function(a){var b=this.shapeseq,c;for(c=b.length;c--;)if(b[c]===a){b.splice(c,1);break}delete this.shapes[a]},getShapeAt:function(a,b,c){return this.targetX=b,this.targetY=c,this.render(),this.currentTargetShapeId},render:function(){var a=this.shapeseq,b=this.shapes,c=a.length,d=this._getContext(),e,f,g;d.clearRect(0,0,this.pixelWidth,this.pixelHeight);for(g=0;g<c;g++)e=a[g],f=b[e],this["_draw"+f.type].apply(this,f.args);this.interact||(this.shapes={},this.shapeseq=[])}}),J=g(H,{init:function(b,c,e){var f;J._super.init.call(this,b,c,e),e[0]&&(e=e[0]),d.data(e,"_jqs_vcanvas",this),this.canvas=a.createElement("span"),d(this.canvas).css({display:"inline-block",position:"relative",overflow:"hidden",width:b,height:c,margin:"0px",padding:"0px",verticalAlign:"top"}),this._insert(this.canvas,e),this._calculatePixelDims(b,c,this.canvas),this.canvas.width=this.pixelWidth,this.canvas.height=this.pixelHeight,f='<v:group coordorigin="0 0" coordsize="'+this.pixelWidth+" "+this.pixelHeight+'"'+' style="position:absolute;top:0;left:0;width:'+this.pixelWidth+"px;height="+this.pixelHeight+'px;"></v:group>',this.canvas.insertAdjacentHTML("beforeEnd",f),this.group=d(this.canvas).children()[0],this.rendered=!1,this.prerender=""},_drawShape:function(a,b,d,e,f){var g=[],h,i,j,k,l,m,n;for(n=0,m=b.length;n<m;n++)g[n]=""+b[n][0]+","+b[n][1];return h=g.splice(0,1),f=f===c?1:f,i=d===c?' stroked="false" ':' strokeWeight="'+f+'px" strokeColor="'+d+'" ',j=e===c?' filled="false"':' fillColor="'+e+'" filled="true" ',k=g[0]===g[g.length-1]?"x ":"",l='<v:shape coordorigin="0 0" coordsize="'+this.pixelWidth+" "+this.pixelHeight+'" '+' id="jqsshape'+a+'" '+i+j+' style="position:absolute;left:0px;top:0px;height:'+this.pixelHeight+"px;width:"+this.pixelWidth+'px;padding:0px;margin:0px;" '+' path="m '+h+" l "+g.join(", ")+" "+k+'e">'+" </v:shape>",l},_drawCircle:function(a,b,d,e,f,g,h){var i,j,k;return b-=e,d-=e,i=f===c?' stroked="false" ':' strokeWeight="'+h+'px" strokeColor="'+f+'" ',j=g===c?' filled="false"':' fillColor="'+g+'" filled="true" ',k='<v:oval  id="jqsshape'+a+'" '+i+j+' style="position:absolute;top:'+d+"px; left:"+b+"px; width:"+e*2+"px; height:"+e*2+'px"></v:oval>',k},_drawPieSlice:function(a,d,e,f,g,h,i,j){var k,l,m,n,o,p,q,r;if(g===h)return"";h-g===2*b.PI&&(g=0,h=2*b.PI),l=d+b.round(b.cos(g)*f),m=e+b.round(b.sin(g)*f),n=d+b.round(b.cos(h)*f),o=e+b.round(b.sin(h)*f);if(l===n&&m===o){if(h-g<b.PI)return"";l=n=d+f,m=o=e}return l===n&&m===o&&h-g<b.PI?"":(k=[d-f,e-f,d+f,e+f,l,m,n,o],p=i===c?' stroked="false" ':' strokeWeight="1px" strokeColor="'+i+'" ',q=j===c?' filled="false"':' fillColor="'+j+'" filled="true" ',r='<v:shape coordorigin="0 0" coordsize="'+this.pixelWidth+" "+this.pixelHeight+'" '+' id="jqsshape'+a+'" '+p+q+' style="position:absolute;left:0px;top:0px;height:'+this.pixelHeight+"px;width:"+this.pixelWidth+'px;padding:0px;margin:0px;" '+' path="m '+d+","+e+" wa "+k.join(", ")+' x e">'+" </v:shape>",r)},_drawRect:function(a,b,c,d,e,f,g){return this._drawShape(a,[[b,c],[b,c+e],[b+d,c+e],[b+d,c],[b,c]],f,g)},reset:function(){this.group.innerHTML=""},appendShape:function(a){var b=this["_draw"+a.type].apply(this,a.args);return this.rendered?this.group.insertAdjacentHTML("beforeEnd",b):this.prerender+=b,this.lastShapeId=a.id,a.id},replaceWithShape:function(a,b){var c=d("#jqsshape"+a),e=this["_draw"+b.type].apply(this,b.args);c[0].outerHTML=e},replaceWithShapes:function(a,b){var c=d("#jqsshape"+a[0]),e="",f=b.length,g;for(g=0;g<f;g++)e+=this["_draw"+b[g].type].apply(this,b[g].args);c[0].outerHTML=e;for(g=1;g<a.length;g++)d("#jqsshape"+a[g]).remove()},insertAfterShape:function(a,b){var c=d("#jqsshape"+a),e=this["_draw"+b.type].apply(this,b.args);c[0].insertAdjacentHTML("afterEnd",e)},removeShapeId:function(a){var b=d("#jqsshape"+a);this.group.removeChild(b[0])},getShapeAt:function(a,b,c){var d=a.id.substr(8);return d},render:function(){this.rendered||(this.group.innerHTML=this.prerender,this.rendered=!0)}})})})(document,Math);
/* --------------------------------------------------------------
         js/libs/splitster/splitster.js
   -------------------------------------------------------------- */
(function($, window, document, undefined){

	var Splitster = function(el, options)
	{
		var self = this;
        var $el = $(el);

        // Setup instance
        self.el = el;
        self.opts = $.extend( {}, $.fn.splitster.defaults, options );

        // Initialize
        self._init();

        // Return configures component
        return self;
	}

	Splitster.prototype = {

		// Private methods
		_init: function()
		{
			var self = this;
			var $el = $(self.el);

			// Setup markup
			$el.addClass("splitster").addClass("splitster--" + self.opts.orientation);
			$el.find("> *").addClass("splitster__pane");
			$el.find("> *:first-child").after("<div class='splitster__bar' style='width:" + self.opts.barWidth + "px;height:" + self.opts.barWidth + "px;' />");

			self.pane1 = $el.find("> .splitster__pane:first-child").get(0);
			self.pane2 = $el.find("> .splitster__pane:last-child").get(0);
			self.bar = $el.find("> .splitster__bar").get(0);

			var dragOpts = self._getDraggableOptions();

			$(self.bar).draggable(dragOpts);

			if(self.opts.draggable){
				$(self.opts.draggable).draggable(dragOpts).addClass("splitster__draggable");
			}

			self._updateSplit();

			$(window).on("resize.splitster", function(){
				self._updateSplit();
			});
		},

		_getDraggableOptions: function()
		{
			var self = this;
			var $el = $(self.el);

			return {
				helper: "clone",
				containment: ".splitster",
				appendTo: ".splitster",
				axis: self.opts.orientation == "vertical" ? "x" : "y",
				cancel: "a",
				start: function(e, ui)
				{
					$(ui.helper).addClass("splitster__bar--ghost").empty();
				},
				stop: function(e, ui)
				{
					// Recalculate the split
					if(self.opts.orientation == "vertical")
					{
						var elWidth = $el.width();
						var offset = ui.position.left + (self.opts.barWidth / 2);
						self.opts.splitPos = (100 / elWidth) * offset;
					}
					else
					{
						var elHeight = $el.height();
						var offset = ui.position.top + (self.opts.barWidth / 2);
						self.opts.splitPos = (100 / elHeight) * offset;
					}

					// Update the split
					self._updateSplit();
				}
			};
		},

		_updateSplit: function()
		{
			var self = this;
			var $el = $(self.el);
			var $bar = $(self.bar);
			var $pane1 = $(self.pane1);
			var $pane2 = $(self.pane2);

			var halfBarWidth = self.opts.barWidth / 2;

			if(self.opts.orientation == "vertical")
			{
				var elWidth = $el.width();
				var splitPos = (elWidth / 100) * self.opts.splitPos;

				var pane1Width = Math.floor(splitPos - halfBarWidth);
				var pane2Width = elWidth - pane1Width - self.opts.barWidth;

				$pane1.css({
					"width": pane1Width + "px",
					"height": "100%",
					"top": 0,
					"left": 0
				});

				$pane2.css({
					"width": pane2Width + "px",
					"height": "100%",
					"top": 0,
					"left": (pane1Width + self.opts.barWidth) + "px"
				});

				$bar.css({
					"top": 0,
					"left": pane1Width + "px"
				});
			}
			else
			{
				var elHeight = $el.height();
				var splitPos = (elHeight / 100) * self.opts.splitPos;

				var pane1Height = Math.floor(splitPos - halfBarWidth);
				var pane2Height = elHeight - pane1Height - self.opts.barWidth;

				$pane1.css({
					"width": "100%",
					"height": pane1Height + "px",
					"top": 0,
					"left": 0
				});

				$pane2.css({
					"width": "100%",
					"height": pane2Height + "px",
					"top": (pane1Height + self.opts.barWidth) + "px",
					"left": 0
				});

				$bar.css({
					"top": pane1Height + "px",
					"left": 0
				});
			}
		},

		// Public methods
		orientation: function(orientation)
		{
			var self = this;
			var $el = $(self.el);

			// Add / remove classes
			$el.removeClass("splitster--" + self.opts.orientation);
			self.opts.orientation = orientation;
			$el.addClass("splitster--" + self.opts.orientation);

			// Change the dragging axis
			$(self.bar).draggable("option", "axis", self.opts.orientation == "vertical" ? "x" : "y");

			// Update the split
			self._updateSplit();
		},

		barWidth: function(barWidth)
		{
			var self = this;
			var $el = $(self.el);

			// Store new width
			self.opts.barWidth = barWidth;

			// Update bar size
			$(self.bar).css({"width":barWidth+"px", "height":barWidth+"px"});

			// Update the split
			self._updateSplit();
		},

		draggable: function(selector)
		{
			var self = this;
			var $el = $(self.el);

			// Destroy the current draggable
			if(self.opts.draggable)
			{
				$(self.opts.draggable).draggable("destroy").removeClass("splitster__draggable");
			}

			self.opts.draggable = selector;

			if(self.opts.draggable)
			{
				$(self.opts.draggable).draggable(self._getDraggableOptions()).addClass("splitster__draggable");
			}
		}

	}

	$.fn.splitster = function(o)
	{
		var args = arguments;
        if (typeof o === 'string') 
        {
            var api = this.splitsterApi();
            if (api[o]) 
            {
                return api[o].apply(api, Array.prototype.slice.call(args, 1));
            } 
            else 
            {
                $.error('Method ' + o + ' does not exist on jQuery.splitster');
            }
        }
        else if (typeof o === 'object' || !o) 
        {
            return this.each(function () 
            {
                $(this).data("splitster_api", new Splitster(this, o));
            });
        }
	}

	$.fn.splitsterApi = function () 
	{
        //ensure there's only 1
        if (this.length != 1) 
        {
            throw "Requesting the API can only match one element";
        }

        //ensure thsi is a splitster
        if (this.data("splitster_api") === null) 
        {
            return undefined;
        }

        return this.data("splitster_api");
    };

	$.fn.splitster.defaults = 
	{
	    orientation: "vertical",
	    barWidth: 6,
	    splitPos: 50
	};

}(jQuery, window, document));
/* --------------------------------------------------------------
         js/libs/toastr/toastr.min.js
   -------------------------------------------------------------- */
(function(n){n(["jquery"],function(n){return function(){function l(n,t,f){return u({type:r.error,iconClass:i().iconClasses.error,message:n,optionsOverride:f,title:t})}function a(n,t,f){return u({type:r.info,iconClass:i().iconClasses.info,message:n,optionsOverride:f,title:t})}function v(n){e=n}function y(n,t,f){return u({type:r.success,iconClass:i().iconClasses.success,message:n,optionsOverride:f,title:t})}function p(n,t,f){return u({type:r.warning,iconClass:i().iconClasses.warning,message:n,optionsOverride:f,title:t})}function w(r){var u=i();if(t||f(u),r&&n(":focus",r).length===0){r[u.hideMethod]({duration:u.hideDuration,easing:u.hideEasing,complete:function(){c(r)}});return}t.children().length&&t[u.hideMethod]({duration:u.hideDuration,easing:u.hideEasing,complete:function(){t.remove()}})}function b(){return{tapToDismiss:!0,toastClass:"toast",containerId:"toast-container",debug:!1,showMethod:"fadeIn",showDuration:300,showEasing:"swing",onShown:undefined,hideMethod:"fadeOut",hideDuration:1e3,hideEasing:"swing",onHidden:undefined,extendedTimeOut:1e3,iconClasses:{error:"toast-error",info:"toast-info",success:"toast-success",warning:"toast-warning"},iconClass:"toast-info",positionClass:"toast-top-right",timeOut:5e3,titleClass:"toast-title",messageClass:"toast-message",target:"body",closeHtml:"<button>&times;<\/button>",newestOnTop:!0}}function h(n){e&&e(n)}function u(r){function l(t){if(!n(":focus",e).length||t)return e[u.hideMethod]({duration:u.hideDuration,easing:u.hideEasing,complete:function(){c(e),u.onHidden&&u.onHidden(),s.state="hidden",s.endTime=new Date,h(s)}})}function b(){(u.timeOut>0||u.extendedTimeOut>0)&&(y=setTimeout(l,u.extendedTimeOut))}function k(){clearTimeout(y),e.stop(!0,!0)[u.showMethod]({duration:u.showDuration,easing:u.showEasing})}var u=i(),v=r.iconClass||u.iconClass;typeof r.optionsOverride!="undefined"&&(u=n.extend(u,r.optionsOverride),v=r.optionsOverride.iconClass||v),o++,t=f(u);var y=null,e=n("<div/>"),p=n("<div/>"),w=n("<div/>"),a=n(u.closeHtml),s={toastId:o,state:"visible",startTime:new Date,options:u,map:r};return r.iconClass&&e.addClass(u.toastClass).addClass(v),r.title&&(p.append(r.title).addClass(u.titleClass),e.append(p)),r.message&&(w.append(r.message).addClass(u.messageClass),e.append(w)),u.closeButton&&(a.addClass("toast-close-button"),e.prepend(a)),e.hide(),u.newestOnTop?t.prepend(e):t.append(e),e[u.showMethod]({duration:u.showDuration,easing:u.showEasing,complete:u.onShown}),u.timeOut>0&&(y=setTimeout(l,u.timeOut)),e.hover(k,b),!u.onclick&&u.tapToDismiss&&e.click(l),u.closeButton&&a&&a.click(function(n){n.stopPropagation(),l(!0)}),u.onclick&&e.click(function(){u.onclick(),l()}),h(s),u.debug&&console&&console.log(s),e}function f(r){return(r||(r=i()),t=n("#"+r.containerId),t.length)?t:(t=n("<div/>").attr("id",r.containerId).addClass(r.positionClass),t.appendTo(n(r.target)),t)}function i(){return n.extend({},b(),s.options)}function c(n){(t||(t=f()),n.is(":visible"))||(n.remove(),n=null,t.children().length===0&&t.remove())}var t,e,o=0,r={error:"error",info:"info",success:"success",warning:"warning"},s={clear:w,error:l,getContainer:f,info:a,options:{},subscribe:v,success:y,version:"2.0.1",warning:p};return s}()})})(typeof define=="function"&&define.amd?define:function(n,t){typeof module!="undefined"&&module.exports?module.exports=t(require(n[0])):window.toastr=t(window.jQuery)});
/* --------------------------------------------------------------
         js/libs/guiders/guiders.js
   -------------------------------------------------------------- */
/**
 * guiders.js
 *
 * version 2.0.0
 *
 * Released under the Apache License 2.0.
 * www.apache.org/licenses/LICENSE-2.0.html
 *
 * Questions about Guiders?
 * Email me (Jeff Pickhardt) at pickhardt@gmail.com
 *
 * Questions about Optimizely? Email one of the following:
 * sales@optimizely.com or support@optimizely.com
 *
 * Enjoy!
 */

var guiders = (function($) {
  var guiders = $.guiders = {};
  
  guiders.version = "2.0.0";

  guiders._defaultSettings = {
    attachTo: null, // Selector of the element to attach to.
    autoFocus: false, // Determines whether or not the browser scrolls to the element.
    buttons: [{name: "Close"}],
    buttonCustomHTML: "",
    classString: null,
    closeOnEscape: false,
    description: "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.",
    highlight: null,
    isHashable: true,
    maxWidth: null,
    offset: {
      top: null,
      left: null
    },
    onClose: null, 
    onHide: null,
    onShow: null,
    overlay: false,
    position: 0, // 1-12 follows an analog clock, 0 means centered.
    shouldSkip: function() {}, // Optional handler allows you to skip a guider if returns true.
    title: "Sample title goes here",
    width: 400,
    xButton: false // This places a closer "x" button in the top right of the guider.
  };

  guiders._htmlSkeleton = [
    "<div class='guider'>",
    "  <div class='guiders_content'>",
    "    <h1 class='guiders_title'></h1>",
    "    <div class='guiders_close'></div>",
    "    <p class='guiders_description'></p>",
    "    <div class='guiders_buttons_container'>",
    "    </div>",
    "  </div>",
    "  <div class='guiders_arrow'>",
    "  </div>",
    "</div>"
  ].join("");

  guiders._arrowSize = 42; // This is the arrow's width and height.
  guiders._arrowOffset = 21; // This is the arrow's width and height.
  guiders._backButtonTitle = "Back";
  guiders._buttonAttributes = {"href": "javascript:void(0);"};
  guiders._buttonClassName = "guiders_button"; // Override this if you use a different class name for your buttons.
  guiders._buttonClickEvent = "click touch"; // Using click touch allows this to trigger with iPad/iPhone taps, as well as browser clicks
  guiders._buttonElement = "<a></a>"; // Override this if you want to use a different element for your buttons, like spans.
  guiders._closeButtonTitle = "Close";
  guiders._currentGuiderID = null;
  guiders._fixedOrAbsolute = "fixed";
  guiders._guiders = {};
  guiders._lastCreatedGuiderID = null;
  guiders._nextButtonTitle = "Next";
  guiders._offsetNameMapping = {
    "topLeft": 11,
    "top": 12,
    "topRight": 1,
    "rightTop": 2,
    "right": 3,
    "rightBottom": 4,
    "bottomRight": 5,
    "bottom": 6,
    "bottomLeft": 7,
    "leftBottom": 8,
    "left": 9,
    "leftTop": 10
  };
  guiders._windowHeight = 0;
  
  // Basic IE browser detection
  var ieBrowserMatch = navigator.userAgent.match(/MSIE\s([\d.]+)/);
  guiders._isIE = ieBrowserMatch && ieBrowserMatch.length > 1;
  guiders._ieVersion = ieBrowserMatch && ieBrowserMatch.length > 1 ? Number(ieBrowserMatch[1]) : -1;
  
  guiders._addButtons = function(myGuider) {
    var guiderButtonsContainer = myGuider.elem.find(".guiders_buttons_container");
  
    if (myGuider.buttons === null || myGuider.buttons.length === 0) {
      guiderButtonsContainer.remove();
      return;
    }
  
    for (var i = myGuider.buttons.length - 1; i >= 0; i--) {
      var thisButton = myGuider.buttons[i];
      var thisButtonElem = $(guiders._buttonElement,
        $.extend({"class" : guiders._buttonClassName, "html" : thisButton.name }, guiders._buttonAttributes, thisButton.html || {})
      );

      if (typeof thisButton.classString !== "undefined" && thisButton.classString !== null) {
        thisButtonElem.addClass(thisButton.classString);
      }
  
      guiderButtonsContainer.append(thisButtonElem);
      
      var thisButtonName = thisButton.name.toLowerCase();
      if (thisButton.onclick) {
        thisButtonElem.bind(guiders._buttonClickEvent, thisButton.onclick);
      } else {
        switch (thisButtonName) {
          case guiders._closeButtonTitle.toLowerCase():
            thisButtonElem.bind(guiders._buttonClickEvent, function () {
              guiders.hideAll();
              if (myGuider.onClose) {
                myGuider.onClose(myGuider, false /* close by button */);
              }
              $("body").trigger("guidersClose");
            });
            break;
          case guiders._nextButtonTitle.toLowerCase():
            thisButtonElem.bind(guiders._buttonClickEvent, function () {
              !myGuider.elem.data("locked") && guiders.next();
            });
            break;
          case guiders._backButtonTitle.toLowerCase():
            thisButtonElem.bind(guiders._buttonClickEvent, function () {
              !myGuider.elem.data("locked") && guiders.prev();
            });
            break;
        }
      }
    }
  
    if (myGuider.buttonCustomHTML !== "") {
      var myCustomHTML = $(myGuider.buttonCustomHTML);
      myGuider.elem.find(".guiders_buttons_container").append(myCustomHTML);
    }
  
    if (myGuider.buttons.length === 0) {
      guiderButtonsContainer.remove();
    }
  };

  guiders._addXButton = function(myGuider) {
    var xButtonContainer = myGuider.elem.find(".guiders_close");
    var xButton = $("<div></div>", {
      "class" : "guiders_x_button",
      "role" : "button"
    });
    xButtonContainer.append(xButton);
    xButton.click(function() {
      guiders.hideAll();
      if (myGuider.onClose) {
        myGuider.onClose(myGuider, true);
       }
       $("body").trigger("guidersClose");
    });
  };
  
  guiders._attach = function(myGuider) {
    if (typeof myGuider !== 'object') {
      return;
    }
        
    var attachTo = $(myGuider.attachTo);

    var myHeight = myGuider.elem.innerHeight();
    var myWidth = myGuider.elem.innerWidth();

    if (myGuider.position === 0 || attachTo.length === 0) {
      var fixedOrAbsolute = "fixed";
      if (guiders._isIE && guiders._ieVersion < 9) {
        fixedOrAbsolute = "absolute";
      }
      myGuider.elem.css("position", fixedOrAbsolute);
      myGuider.elem.css("top", ($(window).height() - myHeight) / 3 + "px");
      myGuider.elem.css("left", ($(window).width() - myWidth) / 2 + "px");
      return;
    }
    
    // Otherwise, the guider is positioned relative to the attachTo element.
    var base = attachTo.offset();
    var top = base.top;
    var left = base.left;
    
    // topMarginOfBody corrects positioning if body has a top margin set on it.
    var topMarginOfBody = $("body").outerHeight(true) - $("body").outerHeight(false);
    top -= topMarginOfBody;

    // Now, take into account how the guider should be positioned relative to the attachTo element.
    // e.g. top left, bottom center, etc.
    if (guiders._offsetNameMapping[myGuider.position]) {
      // As an alternative to the clock model, you can also use keywords to position the guider.
      myGuider.position = guiders._offsetNameMapping[myGuider.position];
    }
    
    var attachToHeight = attachTo.innerHeight();
    var attachToWidth = attachTo.innerWidth();  
    var bufferOffset = 0.9 * guiders._arrowSize;
    
    // offsetMap follows the form: [height, width]
    var offsetMap = {
      1: [-bufferOffset - myHeight, attachToWidth - myWidth],
      2: [0, bufferOffset + attachToWidth],
      3: [attachToHeight/2 - myHeight/2, bufferOffset + attachToWidth],
      4: [attachToHeight - myHeight, bufferOffset + attachToWidth],
      5: [bufferOffset + attachToHeight, attachToWidth - myWidth],
      6: [bufferOffset + attachToHeight, attachToWidth/2 - myWidth/2],
      7: [bufferOffset + attachToHeight, 0],
      8: [attachToHeight - myHeight, -myWidth - bufferOffset],
      9: [attachToHeight/2 - myHeight/2, -myWidth - bufferOffset],
      10: [0, -myWidth - bufferOffset],
      11: [-bufferOffset - myHeight, 0],
      12: [-bufferOffset - myHeight, attachToWidth/2 - myWidth/2]
    };
    
    var offset = offsetMap[myGuider.position];
    top += offset[0];
    left += offset[1];
    
    var positionType = "absolute";
    // If the element you are attaching to is position: fixed, then we will make the guider
    // position: fixed as well.
    if (attachTo.css("position") === "fixed" && guiders._fixedOrAbsolute === "fixed") {
      positionType = "fixed";
      top -= $(window).scrollTop();
      left -= $(window).scrollLeft();
    }
    
    // If you specify an additional offset parameter when you create the guider, it gets added here.
    if (myGuider.offset.top !== null) {
      top += myGuider.offset.top;
    }
    if (myGuider.offset.left !== null) {
      left += myGuider.offset.left;
    }
    
    guiders._styleArrow(myGuider);
    
    // Finally, set the style of the guider and return it!
    myGuider.elem.css({
      "position": positionType,
      "top": top,
      "left": left
    });
    
    return myGuider;
  };

  guiders._dehighlightElement = function(selector) {
    $(selector).removeClass('guiders_highlight');
  };
  
  guiders._hideOverlay = function() {
    $("#guiders_overlay").fadeOut("fast");
  };

  guiders._highlightElement = function(selector) {
    $(selector).addClass('guiders_highlight');
  };

  guiders._initializeOverlay = function() {
    if ($("#guiders_overlay").length === 0) {
      $("<div id='guiders_overlay'></div>").hide().appendTo("body");
    }
  };

  guiders._showOverlay = function(myGuider) {
    // This callback is needed to fix an IE opacity bug.
    // See also:
    // http://www.kevinleary.net/jquery-fadein-fadeout-problems-in-internet-explorer/
    $("#guiders_overlay").fadeIn("fast", function(){
      if (this.style.removeAttribute) {
        this.style.removeAttribute("filter");
      }
    });
    if (guiders._isIE) {
      $("#guiders_overlay").css("position", "absolute");
    }
  };

  guiders._styleArrow = function(myGuider) {
    var position = myGuider.position || 0;
    if (!position) {
      return;
    }
    var myGuiderArrow = $(myGuider.elem.find(".guiders_arrow"));
    var newClass = {
      1: "guiders_arrow_down",
      2: "guiders_arrow_left",
      3: "guiders_arrow_left",
      4: "guiders_arrow_left",
      5: "guiders_arrow_up",
      6: "guiders_arrow_up",
      7: "guiders_arrow_up",
      8: "guiders_arrow_right",
      9: "guiders_arrow_right",
      10: "guiders_arrow_right",
      11: "guiders_arrow_down",
      12: "guiders_arrow_down"
    };
    myGuiderArrow.addClass(newClass[position]);
  
    var myHeight = myGuider.elem.innerHeight();
    var myWidth = myGuider.elem.innerWidth();
    var arrowOffset = guiders._arrowOffset || guiders._arrowSize / 2;
    var positionMap = {
      1: ["right", arrowOffset],
      2: ["top", arrowOffset],
      3: ["top", myHeight/2 - arrowOffset],
      4: ["bottom", arrowOffset],
      5: ["right", arrowOffset],
      6: ["left", myWidth/2 - arrowOffset],
      7: ["left", arrowOffset],
      8: ["bottom", arrowOffset],
      9: ["top", myHeight/2 - arrowOffset],
      10: ["top", arrowOffset],
      11: ["left", arrowOffset],
      12: ["left", myWidth/2 - arrowOffset]
    };
    var position = positionMap[myGuider.position];
    myGuiderArrow.css(position[0], position[1] + "px");
  };

  /**
   * One way to show a guider to new users is to direct new users to a URL such as
   * http://www.mysite.com/myapp#guider=welcome
   *
   * This can also be used to run guiders on multiple pages, by redirecting from
   * one page to another, with the guider id in the hash tag.
   *
   * Alternatively, if you use a session variable or flash messages after sign up,
   * you can add selectively add JavaScript to the page: "guiders.show('first');"
   */
  guiders._showIfHashed = function(myGuider) {
    var GUIDER_HASH_TAG = "guider=";
    var hashIndex = window.location.hash.indexOf(GUIDER_HASH_TAG);
    if (hashIndex !== -1) {
      var hashGuiderId = window.location.hash.substr(hashIndex + GUIDER_HASH_TAG.length);
      if (myGuider.id.toLowerCase() === hashGuiderId.toLowerCase()) {
        guiders.show(myGuider.id);
      }
    }
  };
  
  guiders._updatePositionOnResize = function() {
    // Change the bubble position after browser gets resized
    var _resizing = undefined;
    $(window).resize(function() {
      if (typeof(_resizing) !== "undefined") {
        clearTimeout(_resizing); // Prevents seizures
      }
      _resizing = setTimeout(function() {
        _resizing = undefined;
        if (typeof (guiders) !== "undefined") {
          guiders.reposition();
        }
      }, 20);
    });
  };
  guiders._updatePositionOnResize();

  guiders._unwireEscape = function (myGuider) {
    $(document).unbind("keydown");
  };

  guiders._wireEscape = function (myGuider) {
    $(document).keydown(function(event) {
      if (event.keyCode == 27 || event.which == 27) {
        guiders.hideAll();
        if (myGuider.onClose) {
          myGuider.onClose(myGuider, true /*close by X/Escape*/);
        }
        $("body").trigger("guidersClose");
        return false;
      }
    });      
  };

  guiders.createGuider = function(passedSettings) {
    if (passedSettings === null || passedSettings === undefined) {
      passedSettings = {};
    }
    
    // Extend those settings with passedSettings
    myGuider = $.extend({}, guiders._defaultSettings, passedSettings);
    myGuider.id = myGuider.id || "guider_random_" + String(Math.floor(Math.random() * 1000));
    
    var guiderElement = $("#" + myGuider.id);
    if (!guiderElement.length) {
      // If the guider already exists in the DOM, use that, as an alternate guider instantiation method.
      // See the docs and $.fn.guider for more details.
      // Otherwise, use the html skeleton.
      guiderElement = $(guiders._htmlSkeleton);
    }
    
    myGuider.elem = guiderElement;
    if (typeof myGuider.classString !== "undefined" && myGuider.classString !== null) {
      myGuider.elem.addClass(myGuider.classString);
    }
    
    // You may pass a parameter to width/maxwidth as either a string or a number.
    // If it's a number then it is assumed to be in px.
    if (Number(myGuider.width) === myGuider.width) {
      myGuider.width = String(myGuider.width) + "px";
    }
    if (Number(myGuider.maxWidth) === myGuider.maxWidth) {
      myGuider.maxWidth = String(myGuider.maxWidth) + "px";
    }
    myGuider.elem.css("width", myGuider.width);
    myGuider.elem.css("maxWidth", myGuider.maxWidth);
    
    var guiderTitleContainer = guiderElement.find(".guiders_title");
    guiderTitleContainer.html(myGuider.title);
    
    guiderElement.find(".guiders_description").html(myGuider.description);
    
    guiders._addButtons(myGuider);
    
    if (myGuider.xButton) {
        guiders._addXButton(myGuider);
    }
    
    guiderElement.hide();
    guiderElement.appendTo("body");
    guiderElement.attr("id", myGuider.id);
    
    // Ensure myGuider.attachTo is a jQuery element.
    if (typeof myGuider.attachTo !== "undefined" && myGuider !== null) {
      guiders._attach(myGuider);
    }
    
    guiders._initializeOverlay();
    
    guiders._guiders[myGuider.id] = myGuider;
    if (guiders._lastCreatedGuiderID != null) {
      myGuider.prev = guiders._lastCreatedGuiderID;
    }
    guiders._lastCreatedGuiderID = myGuider.id;
    
    /**
     * If the URL of the current window is of the form
     * http://www.myurl.com/mypage.html#guider=id
     * then show this guider.
     */
    if (myGuider.isHashable) {
      guiders._showIfHashed(myGuider);
    }
    


    return guiders;
  };
  
  guiders.get = function(id) {
    if (typeof guiders._guiders[id] === "undefined") {
      return null;
    }
    return guiders._guiders[id] || null;
  };
  
  guiders.getCurrentGuider = function() {
    return guiders._guiders[guiders._currentGuiderID] || null;
  };

  guiders.hideAll = function(omitHidingOverlay, next) {
    next = next || false;

    $(".guider:visible").each(function(index, elem){
      var myGuider = guiders.get($(elem).attr('id'));
      if (myGuider.onHide) {
        myGuider.onHide(myGuider, next);
      }
    });
    $(".guider").fadeOut("fast");
    var currentGuider = guiders._guiders[guiders._currentGuiderID];
    if (currentGuider && currentGuider.highlight) {
    	guiders._dehighlightElement(currentGuider.highlight);
    }
    if (typeof omitHidingOverlay !== "undefined" && omitHidingOverlay === true) {
      // do nothing for now
    } else {
      guiders._hideOverlay();
    }
    return guiders;
  };
  
  guiders.next = function() {
    var currentGuider = guiders._guiders[guiders._currentGuiderID];
    if (typeof currentGuider === "undefined") {
      return null;
    }
    currentGuider.elem.data("locked", true);

    var nextGuiderId = currentGuider.next || null;
    if (nextGuiderId !== null && nextGuiderId !== "") {
      var nextGuider = guiders.get(nextGuiderId);
      var omitHidingOverlay = nextGuider.overlay ? true : false;
      guiders.hideAll(omitHidingOverlay, true);
      if (currentGuider && currentGuider.highlight) {
        guiders._dehighlightElement(currentGuider.highlight);
      }

      if (nextGuider.shouldSkip && nextGuider.shouldSkip()) {
        guiders._currentGuiderID = nextGuider.id;
        guiders.next();
        return guiders.getCurrentGuider();
      }
      else {
        guiders.show(nextGuiderId);
        return guiders.getCurrentGuider();
      }
    }
  };
  
  guiders.prev = function () {
    var currentGuider = guiders._guiders[guiders._currentGuiderID];
    if (typeof currentGuider === "undefined") {
      // not what we think it is
      return null;
    }
    if (currentGuider.prev === null) {
      // no previous to look at
      return null;
    }
  
    var prevGuider = guiders._guiders[currentGuider.prev];
    prevGuider.elem.data("locked", true);
    
    // Note we use prevGuider.id as "prevGuider" is _already_ looking at the previous guider
    var prevGuiderId = prevGuider.id || null;
    if (prevGuiderId !== null && prevGuiderId !== "") {
      var myGuider = guiders.get(prevGuiderId);
      var omitHidingOverlay = myGuider.overlay ? true : false;
      guiders.hideAll(omitHidingOverlay, true);
      if (prevGuider && prevGuider.highlight) {
        guiders._dehighlightElement(prevGuider.highlight);
      }
      guiders.show(prevGuiderId);
      return myGuider;
    }
  };
  
  guiders.reposition = function() {
    var currentGuider = guiders._guiders[guiders._currentGuiderID];
    guiders._attach(currentGuider);
  };

  guiders.scrollToCurrent = function() {
    var currentGuider = guiders._guiders[guiders._currentGuiderID];
    if (typeof currentGuider === "undefined") {
      return;
    }
    
    var windowHeight = guiders._windowHeight;
    var scrollHeight = $(window).scrollTop();
    var guiderOffset = currentGuider.elem.offset();
    var guiderElemHeight = currentGuider.elem.height();
    
    // Scroll to the guider's position.
    var scrollToHeight = Math.round(Math.max(guiderOffset.top + (guiderElemHeight / 2) - (windowHeight / 2), 0));
    window.scrollTo(0, scrollToHeight);
  };

  guiders.show = function(id) {
    if (!id && guiders._lastCreatedGuiderID) {
      id = guiders._lastCreatedGuiderID;
    }
  
    var myGuider = guiders.get(id);
    if (myGuider.overlay) {
      guiders._showOverlay(myGuider);
      // if guider is attached to an element, make sure it's visible
      if (myGuider.highlight && myGuider.attachTo) {
        guiders._highlightElement(myGuider.attachTo);
      }
    }
    
    if (myGuider.closeOnEscape) {
      guiders._wireEscape(myGuider);
    } else {
      guiders._unwireEscape(myGuider);
    }
  
    // You can use an onShow function to take some action before the guider is shown.
    if (myGuider.onShow) {
      myGuider.onShow(myGuider);
    }
    guiders._attach(myGuider);
    myGuider.elem.fadeIn("fast").data("locked", false);
      
    guiders._currentGuiderID = id;
    
    var windowHeight = guiders._windowHeight = $(window).height();
    var scrollHeight = $(window).scrollTop();
    var guiderOffset = myGuider.elem.offset();
    var guiderElemHeight = myGuider.elem.height();
    
    var isGuiderBelow = (scrollHeight + windowHeight < guiderOffset.top + guiderElemHeight); /* we will need to scroll down */
    var isGuiderAbove = (guiderOffset.top < scrollHeight); /* we will need to scroll up */
    
    if (myGuider.autoFocus && (isGuiderBelow || isGuiderAbove)) {
      // Sometimes the browser won't scroll if the person just clicked,
      // so let's do this in a setTimeout.
      setTimeout(guiders.scrollToCurrent, 10);
    }
    
    $(myGuider.elem).trigger("guiders.show");

    return guiders;
  };
  
  // Allow separate method of instantiating guiders, with $("#guider2").guider()
  // You can pass parameters to the guiders with either data-attributes on the element,
  // or as optional parameters in the options hash: $("#guider").guider(options)
  $.fn.guider = function (passedOptions) {
    passedOptions = passedOptions || {};
    var options = $.extend({}, passedOptions);
    options.id = $(this).attr("id");
      
    var buttons = [];
    $(this).find(".guiders_buttons_container").children().each(function () {
      var buttonOptions = {
        name: $(this).html(),
        classString: $(this).attr("class")
      };
      if ($(this).attr("data-onclick")) {
        var functionName = $(this).attr("data-onclick");
        buttonOptions.onclick = function () { window[functionName](); };
      }
      $(this).remove();
      buttons.push(buttonOptions);
    });
    options.buttons = buttons;
    
    title = $(this).find(".guiders_title").html()
    if (title) {
      options.title = title;
    }

    description = $(this).find(".guiders_description").html()
    if (description) {
      options.description = description;
    }
    
    for (var optionName in guiders._defaultSettings) {
      if (!guiders._defaultSettings.hasOwnProperty(optionName)) {
        continue;
      }
    
      var optionValue = $(this).attr("data-" + optionName);
      if (optionValue === undefined || optionValue === null) {
        continue;
      }
    
      if (optionValue == "true") {
        optionValue = true;
      } else if (optionValue == "false") {
        optionValue = false;
      }
    
      options[optionName] = optionValue;
    }
    
    guiders.createGuider(options);
    return this;
	};
	  
  return guiders;
}).call(this, jQuery);
/* --------------------------------------------------------------
         js/libs/flot/jquery.flot.js
   -------------------------------------------------------------- */
/* Javascript plotting library for jQuery, version 0.8.3.

Copyright (c) 2007-2014 IOLA and Ole Laursen.
Licensed under the MIT license.

*/

// first an inline dependency, jquery.colorhelpers.js, we inline it here
// for convenience

/* Plugin for jQuery for working with colors.
 *
 * Version 1.1.
 *
 * Inspiration from jQuery color animation plugin by John Resig.
 *
 * Released under the MIT license by Ole Laursen, October 2009.
 *
 * Examples:
 *
 *   $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
 *   var c = $.color.extract($("#mydiv"), 'background-color');
 *   console.log(c.r, c.g, c.b, c.a);
 *   $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
 *
 * Note that .scale() and .add() return the same modified object
 * instead of making a new one.
 *
 * V. 1.1: Fix error handling so e.g. parsing an empty string does
 * produce a color rather than just crashing.
 */
(function($){$.color={};$.color.make=function(r,g,b,a){var o={};o.r=r||0;o.g=g||0;o.b=b||0;o.a=a!=null?a:1;o.add=function(c,d){for(var i=0;i<c.length;++i)o[c.charAt(i)]+=d;return o.normalize()};o.scale=function(c,f){for(var i=0;i<c.length;++i)o[c.charAt(i)]*=f;return o.normalize()};o.toString=function(){if(o.a>=1){return"rgb("+[o.r,o.g,o.b].join(",")+")"}else{return"rgba("+[o.r,o.g,o.b,o.a].join(",")+")"}};o.normalize=function(){function clamp(min,value,max){return value<min?min:value>max?max:value}o.r=clamp(0,parseInt(o.r),255);o.g=clamp(0,parseInt(o.g),255);o.b=clamp(0,parseInt(o.b),255);o.a=clamp(0,o.a,1);return o};o.clone=function(){return $.color.make(o.r,o.b,o.g,o.a)};return o.normalize()};$.color.extract=function(elem,css){var c;do{c=elem.css(css).toLowerCase();if(c!=""&&c!="transparent")break;elem=elem.parent()}while(elem.length&&!$.nodeName(elem.get(0),"body"));if(c=="rgba(0, 0, 0, 0)")c="transparent";return $.color.parse(c)};$.color.parse=function(str){var res,m=$.color.make;if(res=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10));if(res=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10),parseFloat(res[4]));if(res=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55);if(res=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55,parseFloat(res[4]));if(res=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str))return m(parseInt(res[1],16),parseInt(res[2],16),parseInt(res[3],16));if(res=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str))return m(parseInt(res[1]+res[1],16),parseInt(res[2]+res[2],16),parseInt(res[3]+res[3],16));var name=$.trim(str).toLowerCase();if(name=="transparent")return m(255,255,255,0);else{res=lookupColors[name]||[0,0,0];return m(res[0],res[1],res[2])}};var lookupColors={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery);

// the actual Flot code
(function($) {

	// Cache the prototype hasOwnProperty for faster access

	var hasOwnProperty = Object.prototype.hasOwnProperty;

    // A shim to provide 'detach' to jQuery versions prior to 1.4.  Using a DOM
    // operation produces the same effect as detach, i.e. removing the element
    // without touching its jQuery data.

    // Do not merge this into Flot 0.9, since it requires jQuery 1.4.4+.

    if (!$.fn.detach) {
        $.fn.detach = function() {
            return this.each(function() {
                if (this.parentNode) {
                    this.parentNode.removeChild( this );
                }
            });
        };
    }

	///////////////////////////////////////////////////////////////////////////
	// The Canvas object is a wrapper around an HTML5 <canvas> tag.
	//
	// @constructor
	// @param {string} cls List of classes to apply to the canvas.
	// @param {element} container Element onto which to append the canvas.
	//
	// Requiring a container is a little iffy, but unfortunately canvas
	// operations don't work unless the canvas is attached to the DOM.

	function Canvas(cls, container) {

		var element = container.children("." + cls)[0];

		if (element == null) {

			element = document.createElement("canvas");
			element.className = cls;

			$(element).css({ direction: "ltr", position: "absolute", left: 0, top: 0 })
				.appendTo(container);

			// If HTML5 Canvas isn't available, fall back to [Ex|Flash]canvas

			if (!element.getContext) {
				if (window.G_vmlCanvasManager) {
					element = window.G_vmlCanvasManager.initElement(element);
				} else {
					throw new Error("Canvas is not available. If you're using IE with a fall-back such as Excanvas, then there's either a mistake in your conditional include, or the page has no DOCTYPE and is rendering in Quirks Mode.");
				}
			}
		}

		this.element = element;

		var context = this.context = element.getContext("2d");

		// Determine the screen's ratio of physical to device-independent
		// pixels.  This is the ratio between the canvas width that the browser
		// advertises and the number of pixels actually present in that space.

		// The iPhone 4, for example, has a device-independent width of 320px,
		// but its screen is actually 640px wide.  It therefore has a pixel
		// ratio of 2, while most normal devices have a ratio of 1.

		var devicePixelRatio = window.devicePixelRatio || 1,
			backingStoreRatio =
				context.webkitBackingStorePixelRatio ||
				context.mozBackingStorePixelRatio ||
				context.msBackingStorePixelRatio ||
				context.oBackingStorePixelRatio ||
				context.backingStorePixelRatio || 1;

		this.pixelRatio = devicePixelRatio / backingStoreRatio;

		// Size the canvas to match the internal dimensions of its container

		this.resize(container.width(), container.height());

		// Collection of HTML div layers for text overlaid onto the canvas

		this.textContainer = null;
		this.text = {};

		// Cache of text fragments and metrics, so we can avoid expensively
		// re-calculating them when the plot is re-rendered in a loop.

		this._textCache = {};
	}

	// Resizes the canvas to the given dimensions.
	//
	// @param {number} width New width of the canvas, in pixels.
	// @param {number} width New height of the canvas, in pixels.

	Canvas.prototype.resize = function(width, height) {

		if (width <= 0 || height <= 0) {
			throw new Error("Invalid dimensions for plot, width = " + width + ", height = " + height);
		}

		var element = this.element,
			context = this.context,
			pixelRatio = this.pixelRatio;

		// Resize the canvas, increasing its density based on the display's
		// pixel ratio; basically giving it more pixels without increasing the
		// size of its element, to take advantage of the fact that retina
		// displays have that many more pixels in the same advertised space.

		// Resizing should reset the state (excanvas seems to be buggy though)

		if (this.width != width) {
			element.width = width * pixelRatio;
			element.style.width = width + "px";
			this.width = width;
		}

		if (this.height != height) {
			element.height = height * pixelRatio;
			element.style.height = height + "px";
			this.height = height;
		}

		// Save the context, so we can reset in case we get replotted.  The
		// restore ensure that we're really back at the initial state, and
		// should be safe even if we haven't saved the initial state yet.

		context.restore();
		context.save();

		// Scale the coordinate space to match the display density; so even though we
		// may have twice as many pixels, we still want lines and other drawing to
		// appear at the same size; the extra pixels will just make them crisper.

		context.scale(pixelRatio, pixelRatio);
	};

	// Clears the entire canvas area, not including any overlaid HTML text

	Canvas.prototype.clear = function() {
		this.context.clearRect(0, 0, this.width, this.height);
	};

	// Finishes rendering the canvas, including managing the text overlay.

	Canvas.prototype.render = function() {

		var cache = this._textCache;

		// For each text layer, add elements marked as active that haven't
		// already been rendered, and remove those that are no longer active.

		for (var layerKey in cache) {
			if (hasOwnProperty.call(cache, layerKey)) {

				var layer = this.getTextLayer(layerKey),
					layerCache = cache[layerKey];

				layer.hide();

				for (var styleKey in layerCache) {
					if (hasOwnProperty.call(layerCache, styleKey)) {
						var styleCache = layerCache[styleKey];
						for (var key in styleCache) {
							if (hasOwnProperty.call(styleCache, key)) {

								var positions = styleCache[key].positions;

								for (var i = 0, position; position = positions[i]; i++) {
									if (position.active) {
										if (!position.rendered) {
											layer.append(position.element);
											position.rendered = true;
										}
									} else {
										positions.splice(i--, 1);
										if (position.rendered) {
											position.element.detach();
										}
									}
								}

								if (positions.length == 0) {
									delete styleCache[key];
								}
							}
						}
					}
				}

				layer.show();
			}
		}
	};

	// Creates (if necessary) and returns the text overlay container.
	//
	// @param {string} classes String of space-separated CSS classes used to
	//     uniquely identify the text layer.
	// @return {object} The jQuery-wrapped text-layer div.

	Canvas.prototype.getTextLayer = function(classes) {

		var layer = this.text[classes];

		// Create the text layer if it doesn't exist

		if (layer == null) {

			// Create the text layer container, if it doesn't exist

			if (this.textContainer == null) {
				this.textContainer = $("<div class='flot-text'></div>")
					.css({
						position: "absolute",
						top: 0,
						left: 0,
						bottom: 0,
						right: 0,
						'font-size': "smaller",
						color: "#545454"
					})
					.insertAfter(this.element);
			}

			layer = this.text[classes] = $("<div></div>")
				.addClass(classes)
				.css({
					position: "absolute",
					top: 0,
					left: 0,
					bottom: 0,
					right: 0
				})
				.appendTo(this.textContainer);
		}

		return layer;
	};

	// Creates (if necessary) and returns a text info object.
	//
	// The object looks like this:
	//
	// {
	//     width: Width of the text's wrapper div.
	//     height: Height of the text's wrapper div.
	//     element: The jQuery-wrapped HTML div containing the text.
	//     positions: Array of positions at which this text is drawn.
	// }
	//
	// The positions array contains objects that look like this:
	//
	// {
	//     active: Flag indicating whether the text should be visible.
	//     rendered: Flag indicating whether the text is currently visible.
	//     element: The jQuery-wrapped HTML div containing the text.
	//     x: X coordinate at which to draw the text.
	//     y: Y coordinate at which to draw the text.
	// }
	//
	// Each position after the first receives a clone of the original element.
	//
	// The idea is that that the width, height, and general 'identity' of the
	// text is constant no matter where it is placed; the placements are a
	// secondary property.
	//
	// Canvas maintains a cache of recently-used text info objects; getTextInfo
	// either returns the cached element or creates a new entry.
	//
	// @param {string} layer A string of space-separated CSS classes uniquely
	//     identifying the layer containing this text.
	// @param {string} text Text string to retrieve info for.
	// @param {(string|object)=} font Either a string of space-separated CSS
	//     classes or a font-spec object, defining the text's font and style.
	// @param {number=} angle Angle at which to rotate the text, in degrees.
	//     Angle is currently unused, it will be implemented in the future.
	// @param {number=} width Maximum width of the text before it wraps.
	// @return {object} a text info object.

	Canvas.prototype.getTextInfo = function(layer, text, font, angle, width) {

		var textStyle, layerCache, styleCache, info;

		// Cast the value to a string, in case we were given a number or such

		text = "" + text;

		// If the font is a font-spec object, generate a CSS font definition

		if (typeof font === "object") {
			textStyle = font.style + " " + font.variant + " " + font.weight + " " + font.size + "px/" + font.lineHeight + "px " + font.family;
		} else {
			textStyle = font;
		}

		// Retrieve (or create) the cache for the text's layer and styles

		layerCache = this._textCache[layer];

		if (layerCache == null) {
			layerCache = this._textCache[layer] = {};
		}

		styleCache = layerCache[textStyle];

		if (styleCache == null) {
			styleCache = layerCache[textStyle] = {};
		}

		info = styleCache[text];

		// If we can't find a matching element in our cache, create a new one

		if (info == null) {

			var element = $("<div></div>").html(text)
				.css({
					position: "absolute",
					'max-width': width,
					top: -9999
				})
				.appendTo(this.getTextLayer(layer));

			if (typeof font === "object") {
				element.css({
					font: textStyle,
					color: font.color
				});
			} else if (typeof font === "string") {
				element.addClass(font);
			}

			info = styleCache[text] = {
				width: element.outerWidth(true),
				height: element.outerHeight(true),
				element: element,
				positions: []
			};

			element.detach();
		}

		return info;
	};

	// Adds a text string to the canvas text overlay.
	//
	// The text isn't drawn immediately; it is marked as rendering, which will
	// result in its addition to the canvas on the next render pass.
	//
	// @param {string} layer A string of space-separated CSS classes uniquely
	//     identifying the layer containing this text.
	// @param {number} x X coordinate at which to draw the text.
	// @param {number} y Y coordinate at which to draw the text.
	// @param {string} text Text string to draw.
	// @param {(string|object)=} font Either a string of space-separated CSS
	//     classes or a font-spec object, defining the text's font and style.
	// @param {number=} angle Angle at which to rotate the text, in degrees.
	//     Angle is currently unused, it will be implemented in the future.
	// @param {number=} width Maximum width of the text before it wraps.
	// @param {string=} halign Horizontal alignment of the text; either "left",
	//     "center" or "right".
	// @param {string=} valign Vertical alignment of the text; either "top",
	//     "middle" or "bottom".

	Canvas.prototype.addText = function(layer, x, y, text, font, angle, width, halign, valign) {

		var info = this.getTextInfo(layer, text, font, angle, width),
			positions = info.positions;

		// Tweak the div's position to match the text's alignment

		if (halign == "center") {
			x -= info.width / 2;
		} else if (halign == "right") {
			x -= info.width;
		}

		if (valign == "middle") {
			y -= info.height / 2;
		} else if (valign == "bottom") {
			y -= info.height;
		}

		// Determine whether this text already exists at this position.
		// If so, mark it for inclusion in the next render pass.

		for (var i = 0, position; position = positions[i]; i++) {
			if (position.x == x && position.y == y) {
				position.active = true;
				return;
			}
		}

		// If the text doesn't exist at this position, create a new entry

		// For the very first position we'll re-use the original element,
		// while for subsequent ones we'll clone it.

		position = {
			active: true,
			rendered: false,
			element: positions.length ? info.element.clone() : info.element,
			x: x,
			y: y
		};

		positions.push(position);

		// Move the element to its final position within the container

		position.element.css({
			top: Math.round(y),
			left: Math.round(x),
			'text-align': halign	// In case the text wraps
		});
	};

	// Removes one or more text strings from the canvas text overlay.
	//
	// If no parameters are given, all text within the layer is removed.
	//
	// Note that the text is not immediately removed; it is simply marked as
	// inactive, which will result in its removal on the next render pass.
	// This avoids the performance penalty for 'clear and redraw' behavior,
	// where we potentially get rid of all text on a layer, but will likely
	// add back most or all of it later, as when redrawing axes, for example.
	//
	// @param {string} layer A string of space-separated CSS classes uniquely
	//     identifying the layer containing this text.
	// @param {number=} x X coordinate of the text.
	// @param {number=} y Y coordinate of the text.
	// @param {string=} text Text string to remove.
	// @param {(string|object)=} font Either a string of space-separated CSS
	//     classes or a font-spec object, defining the text's font and style.
	// @param {number=} angle Angle at which the text is rotated, in degrees.
	//     Angle is currently unused, it will be implemented in the future.

	Canvas.prototype.removeText = function(layer, x, y, text, font, angle) {
		if (text == null) {
			var layerCache = this._textCache[layer];
			if (layerCache != null) {
				for (var styleKey in layerCache) {
					if (hasOwnProperty.call(layerCache, styleKey)) {
						var styleCache = layerCache[styleKey];
						for (var key in styleCache) {
							if (hasOwnProperty.call(styleCache, key)) {
								var positions = styleCache[key].positions;
								for (var i = 0, position; position = positions[i]; i++) {
									position.active = false;
								}
							}
						}
					}
				}
			}
		} else {
			var positions = this.getTextInfo(layer, text, font, angle).positions;
			for (var i = 0, position; position = positions[i]; i++) {
				if (position.x == x && position.y == y) {
					position.active = false;
				}
			}
		}
	};

	///////////////////////////////////////////////////////////////////////////
	// The top-level container for the entire plot.

    function Plot(placeholder, data_, options_, plugins) {
        // data is on the form:
        //   [ series1, series2 ... ]
        // where series is either just the data as [ [x1, y1], [x2, y2], ... ]
        // or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }

        var series = [],
            options = {
                // the color theme used for graphs
                colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"],
                legend: {
                    show: true,
                    noColumns: 1, // number of colums in legend table
                    labelFormatter: null, // fn: string -> string
                    labelBoxBorderColor: "#ccc", // border color for the little label boxes
                    container: null, // container (as jQuery object) to put legend in, null means default on top of graph
                    position: "ne", // position of default legend container within plot
                    margin: 5, // distance from grid edge to default legend container within plot
                    backgroundColor: null, // null means auto-detect
                    backgroundOpacity: 0.85, // set to 0 to avoid background
                    sorted: null    // default to no legend sorting
                },
                xaxis: {
                    show: null, // null = auto-detect, true = always, false = never
                    position: "bottom", // or "top"
                    mode: null, // null or "time"
                    font: null, // null (derived from CSS in placeholder) or object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
                    color: null, // base color, labels, ticks
                    tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
                    transform: null, // null or f: number -> number to transform axis
                    inverseTransform: null, // if transform is set, this should be the inverse function
                    min: null, // min. value to show, null means set automatically
                    max: null, // max. value to show, null means set automatically
                    autoscaleMargin: null, // margin in % to add if auto-setting min/max
                    ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
                    tickFormatter: null, // fn: number -> string
                    labelWidth: null, // size of tick labels in pixels
                    labelHeight: null,
                    reserveSpace: null, // whether to reserve space even if axis isn't shown
                    tickLength: null, // size in pixels of ticks, or "full" for whole line
                    alignTicksWithAxis: null, // axis number or null for no sync
                    tickDecimals: null, // no. of decimals, null means auto
                    tickSize: null, // number or [number, "unit"]
                    minTickSize: null // number or [number, "unit"]
                },
                yaxis: {
                    autoscaleMargin: 0.02,
                    position: "left" // or "right"
                },
                xaxes: [],
                yaxes: [],
                series: {
                    points: {
                        show: false,
                        radius: 3,
                        lineWidth: 2, // in pixels
                        fill: true,
                        fillColor: "#ffffff",
                        symbol: "circle" // or callback
                    },
                    lines: {
                        // we don't put in show: false so we can see
                        // whether lines were actively disabled
                        lineWidth: 2, // in pixels
                        fill: false,
                        fillColor: null,
                        steps: false
                        // Omit 'zero', so we can later default its value to
                        // match that of the 'fill' option.
                    },
                    bars: {
                        show: false,
                        lineWidth: 2, // in pixels
                        barWidth: 1, // in units of the x axis
                        fill: true,
                        fillColor: null,
                        align: "left", // "left", "right", or "center"
                        horizontal: false,
                        zero: true
                    },
                    shadowSize: 3,
                    highlightColor: null
                },
                grid: {
                    show: true,
                    aboveData: false,
                    color: "#545454", // primary color used for outline and labels
                    backgroundColor: null, // null for transparent, else color
                    borderColor: null, // set if different from the grid color
                    tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)"
                    margin: 0, // distance from the canvas edge to the grid
                    labelMargin: 5, // in pixels
                    axisMargin: 8, // in pixels
                    borderWidth: 2, // in pixels
                    minBorderMargin: null, // in pixels, null means taken from points radius
                    markings: null, // array of ranges or fn: axes -> array of ranges
                    markingsColor: "#f4f4f4",
                    markingsLineWidth: 2,
                    // interactive stuff
                    clickable: false,
                    hoverable: false,
                    autoHighlight: true, // highlight in case mouse is near
                    mouseActiveRadius: 10 // how far the mouse can be away to activate an item
                },
                interaction: {
                    redrawOverlayInterval: 1000/60 // time between updates, -1 means in same flow
                },
                hooks: {}
            },
        surface = null,     // the canvas for the plot itself
        overlay = null,     // canvas for interactive stuff on top of plot
        eventHolder = null, // jQuery object that events should be bound to
        ctx = null, octx = null,
        xaxes = [], yaxes = [],
        plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
        plotWidth = 0, plotHeight = 0,
        hooks = {
            processOptions: [],
            processRawData: [],
            processDatapoints: [],
            processOffset: [],
            drawBackground: [],
            drawSeries: [],
            draw: [],
            bindEvents: [],
            drawOverlay: [],
            shutdown: []
        },
        plot = this;

        // public functions
        plot.setData = setData;
        plot.setupGrid = setupGrid;
        plot.draw = draw;
        plot.getPlaceholder = function() { return placeholder; };
        plot.getCanvas = function() { return surface.element; };
        plot.getPlotOffset = function() { return plotOffset; };
        plot.width = function () { return plotWidth; };
        plot.height = function () { return plotHeight; };
        plot.offset = function () {
            var o = eventHolder.offset();
            o.left += plotOffset.left;
            o.top += plotOffset.top;
            return o;
        };
        plot.getData = function () { return series; };
        plot.getAxes = function () {
            var res = {}, i;
            $.each(xaxes.concat(yaxes), function (_, axis) {
                if (axis)
                    res[axis.direction + (axis.n != 1 ? axis.n : "") + "axis"] = axis;
            });
            return res;
        };
        plot.getXAxes = function () { return xaxes; };
        plot.getYAxes = function () { return yaxes; };
        plot.c2p = canvasToAxisCoords;
        plot.p2c = axisToCanvasCoords;
        plot.getOptions = function () { return options; };
        plot.highlight = highlight;
        plot.unhighlight = unhighlight;
        plot.triggerRedrawOverlay = triggerRedrawOverlay;
        plot.pointOffset = function(point) {
            return {
                left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left, 10),
                top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top, 10)
            };
        };
        plot.shutdown = shutdown;
        plot.destroy = function () {
            shutdown();
            placeholder.removeData("plot").empty();

            series = [];
            options = null;
            surface = null;
            overlay = null;
            eventHolder = null;
            ctx = null;
            octx = null;
            xaxes = [];
            yaxes = [];
            hooks = null;
            highlights = [];
            plot = null;
        };
        plot.resize = function () {
        	var width = placeholder.width(),
        		height = placeholder.height();
            surface.resize(width, height);
            overlay.resize(width, height);
        };

        // public attributes
        plot.hooks = hooks;

        // initialize
        initPlugins(plot);
        parseOptions(options_);
        setupCanvases();
        setData(data_);
        setupGrid();
        draw();
        bindEvents();


        function executeHooks(hook, args) {
            args = [plot].concat(args);
            for (var i = 0; i < hook.length; ++i)
                hook[i].apply(this, args);
        }

        function initPlugins() {

            // References to key classes, allowing plugins to modify them

            var classes = {
                Canvas: Canvas
            };

            for (var i = 0; i < plugins.length; ++i) {
                var p = plugins[i];
                p.init(plot, classes);
                if (p.options)
                    $.extend(true, options, p.options);
            }
        }

        function parseOptions(opts) {

            $.extend(true, options, opts);

            // $.extend merges arrays, rather than replacing them.  When less
            // colors are provided than the size of the default palette, we
            // end up with those colors plus the remaining defaults, which is
            // not expected behavior; avoid it by replacing them here.

            if (opts && opts.colors) {
            	options.colors = opts.colors;
            }

            if (options.xaxis.color == null)
                options.xaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
            if (options.yaxis.color == null)
                options.yaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();

            if (options.xaxis.tickColor == null) // grid.tickColor for back-compatibility
                options.xaxis.tickColor = options.grid.tickColor || options.xaxis.color;
            if (options.yaxis.tickColor == null) // grid.tickColor for back-compatibility
                options.yaxis.tickColor = options.grid.tickColor || options.yaxis.color;

            if (options.grid.borderColor == null)
                options.grid.borderColor = options.grid.color;
            if (options.grid.tickColor == null)
                options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString();

            // Fill in defaults for axis options, including any unspecified
            // font-spec fields, if a font-spec was provided.

            // If no x/y axis options were provided, create one of each anyway,
            // since the rest of the code assumes that they exist.

            var i, axisOptions, axisCount,
                fontSize = placeholder.css("font-size"),
                fontSizeDefault = fontSize ? +fontSize.replace("px", "") : 13,
                fontDefaults = {
                    style: placeholder.css("font-style"),
                    size: Math.round(0.8 * fontSizeDefault),
                    variant: placeholder.css("font-variant"),
                    weight: placeholder.css("font-weight"),
                    family: placeholder.css("font-family")
                };

            axisCount = options.xaxes.length || 1;
            for (i = 0; i < axisCount; ++i) {

                axisOptions = options.xaxes[i];
                if (axisOptions && !axisOptions.tickColor) {
                    axisOptions.tickColor = axisOptions.color;
                }

                axisOptions = $.extend(true, {}, options.xaxis, axisOptions);
                options.xaxes[i] = axisOptions;

                if (axisOptions.font) {
                    axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
                    if (!axisOptions.font.color) {
                        axisOptions.font.color = axisOptions.color;
                    }
                    if (!axisOptions.font.lineHeight) {
                        axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
                    }
                }
            }

            axisCount = options.yaxes.length || 1;
            for (i = 0; i < axisCount; ++i) {

                axisOptions = options.yaxes[i];
                if (axisOptions && !axisOptions.tickColor) {
                    axisOptions.tickColor = axisOptions.color;
                }

                axisOptions = $.extend(true, {}, options.yaxis, axisOptions);
                options.yaxes[i] = axisOptions;

                if (axisOptions.font) {
                    axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
                    if (!axisOptions.font.color) {
                        axisOptions.font.color = axisOptions.color;
                    }
                    if (!axisOptions.font.lineHeight) {
                        axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
                    }
                }
            }

            // backwards compatibility, to be removed in future
            if (options.xaxis.noTicks && options.xaxis.ticks == null)
                options.xaxis.ticks = options.xaxis.noTicks;
            if (options.yaxis.noTicks && options.yaxis.ticks == null)
                options.yaxis.ticks = options.yaxis.noTicks;
            if (options.x2axis) {
                options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis);
                options.xaxes[1].position = "top";
                // Override the inherit to allow the axis to auto-scale
                if (options.x2axis.min == null) {
                    options.xaxes[1].min = null;
                }
                if (options.x2axis.max == null) {
                    options.xaxes[1].max = null;
                }
            }
            if (options.y2axis) {
                options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis);
                options.yaxes[1].position = "right";
                // Override the inherit to allow the axis to auto-scale
                if (options.y2axis.min == null) {
                    options.yaxes[1].min = null;
                }
                if (options.y2axis.max == null) {
                    options.yaxes[1].max = null;
                }
            }
            if (options.grid.coloredAreas)
                options.grid.markings = options.grid.coloredAreas;
            if (options.grid.coloredAreasColor)
                options.grid.markingsColor = options.grid.coloredAreasColor;
            if (options.lines)
                $.extend(true, options.series.lines, options.lines);
            if (options.points)
                $.extend(true, options.series.points, options.points);
            if (options.bars)
                $.extend(true, options.series.bars, options.bars);
            if (options.shadowSize != null)
                options.series.shadowSize = options.shadowSize;
            if (options.highlightColor != null)
                options.series.highlightColor = options.highlightColor;

            // save options on axes for future reference
            for (i = 0; i < options.xaxes.length; ++i)
                getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i];
            for (i = 0; i < options.yaxes.length; ++i)
                getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i];

            // add hooks from options
            for (var n in hooks)
                if (options.hooks[n] && options.hooks[n].length)
                    hooks[n] = hooks[n].concat(options.hooks[n]);

            executeHooks(hooks.processOptions, [options]);
        }

        function setData(d) {
            series = parseData(d);
            fillInSeriesOptions();
            processData();
        }

        function parseData(d) {
            var res = [];
            for (var i = 0; i < d.length; ++i) {
                var s = $.extend(true, {}, options.series);

                if (d[i].data != null) {
                    s.data = d[i].data; // move the data instead of deep-copy
                    delete d[i].data;

                    $.extend(true, s, d[i]);

                    d[i].data = s.data;
                }
                else
                    s.data = d[i];
                res.push(s);
            }

            return res;
        }

        function axisNumber(obj, coord) {
            var a = obj[coord + "axis"];
            if (typeof a == "object") // if we got a real axis, extract number
                a = a.n;
            if (typeof a != "number")
                a = 1; // default to first axis
            return a;
        }

        function allAxes() {
            // return flat array without annoying null entries
            return $.grep(xaxes.concat(yaxes), function (a) { return a; });
        }

        function canvasToAxisCoords(pos) {
            // return an object with x/y corresponding to all used axes
            var res = {}, i, axis;
            for (i = 0; i < xaxes.length; ++i) {
                axis = xaxes[i];
                if (axis && axis.used)
                    res["x" + axis.n] = axis.c2p(pos.left);
            }

            for (i = 0; i < yaxes.length; ++i) {
                axis = yaxes[i];
                if (axis && axis.used)
                    res["y" + axis.n] = axis.c2p(pos.top);
            }

            if (res.x1 !== undefined)
                res.x = res.x1;
            if (res.y1 !== undefined)
                res.y = res.y1;

            return res;
        }

        function axisToCanvasCoords(pos) {
            // get canvas coords from the first pair of x/y found in pos
            var res = {}, i, axis, key;

            for (i = 0; i < xaxes.length; ++i) {
                axis = xaxes[i];
                if (axis && axis.used) {
                    key = "x" + axis.n;
                    if (pos[key] == null && axis.n == 1)
                        key = "x";

                    if (pos[key] != null) {
                        res.left = axis.p2c(pos[key]);
                        break;
                    }
                }
            }

            for (i = 0; i < yaxes.length; ++i) {
                axis = yaxes[i];
                if (axis && axis.used) {
                    key = "y" + axis.n;
                    if (pos[key] == null && axis.n == 1)
                        key = "y";

                    if (pos[key] != null) {
                        res.top = axis.p2c(pos[key]);
                        break;
                    }
                }
            }

            return res;
        }

        function getOrCreateAxis(axes, number) {
            if (!axes[number - 1])
                axes[number - 1] = {
                    n: number, // save the number for future reference
                    direction: axes == xaxes ? "x" : "y",
                    options: $.extend(true, {}, axes == xaxes ? options.xaxis : options.yaxis)
                };

            return axes[number - 1];
        }

        function fillInSeriesOptions() {

            var neededColors = series.length, maxIndex = -1, i;

            // Subtract the number of series that already have fixed colors or
            // color indexes from the number that we still need to generate.

            for (i = 0; i < series.length; ++i) {
                var sc = series[i].color;
                if (sc != null) {
                    neededColors--;
                    if (typeof sc == "number" && sc > maxIndex) {
                        maxIndex = sc;
                    }
                }
            }

            // If any of the series have fixed color indexes, then we need to
            // generate at least as many colors as the highest index.

            if (neededColors <= maxIndex) {
                neededColors = maxIndex + 1;
            }

            // Generate all the colors, using first the option colors and then
            // variations on those colors once they're exhausted.

            var c, colors = [], colorPool = options.colors,
                colorPoolSize = colorPool.length, variation = 0;

            for (i = 0; i < neededColors; i++) {

                c = $.color.parse(colorPool[i % colorPoolSize] || "#666");

                // Each time we exhaust the colors in the pool we adjust
                // a scaling factor used to produce more variations on
                // those colors. The factor alternates negative/positive
                // to produce lighter/darker colors.

                // Reset the variation after every few cycles, or else
                // it will end up producing only white or black colors.

                if (i % colorPoolSize == 0 && i) {
                    if (variation >= 0) {
                        if (variation < 0.5) {
                            variation = -variation - 0.2;
                        } else variation = 0;
                    } else variation = -variation;
                }

                colors[i] = c.scale('rgb', 1 + variation);
            }

            // Finalize the series options, filling in their colors

            var colori = 0, s;
            for (i = 0; i < series.length; ++i) {
                s = series[i];

                // assign colors
                if (s.color == null) {
                    s.color = colors[colori].toString();
                    ++colori;
                }
                else if (typeof s.color == "number")
                    s.color = colors[s.color].toString();

                // turn on lines automatically in case nothing is set
                if (s.lines.show == null) {
                    var v, show = true;
                    for (v in s)
                        if (s[v] && s[v].show) {
                            show = false;
                            break;
                        }
                    if (show)
                        s.lines.show = true;
                }

                // If nothing was provided for lines.zero, default it to match
                // lines.fill, since areas by default should extend to zero.

                if (s.lines.zero == null) {
                    s.lines.zero = !!s.lines.fill;
                }

                // setup axes
                s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x"));
                s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y"));
            }
        }

        function processData() {
            var topSentry = Number.POSITIVE_INFINITY,
                bottomSentry = Number.NEGATIVE_INFINITY,
                fakeInfinity = Number.MAX_VALUE,
                i, j, k, m, length,
                s, points, ps, x, y, axis, val, f, p,
                data, format;

            function updateAxis(axis, min, max) {
                if (min < axis.datamin && min != -fakeInfinity)
                    axis.datamin = min;
                if (max > axis.datamax && max != fakeInfinity)
                    axis.datamax = max;
            }

            $.each(allAxes(), function (_, axis) {
                // init axis
                axis.datamin = topSentry;
                axis.datamax = bottomSentry;
                axis.used = false;
            });

            for (i = 0; i < series.length; ++i) {
                s = series[i];
                s.datapoints = { points: [] };

                executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]);
            }

            // first pass: clean and copy data
            for (i = 0; i < series.length; ++i) {
                s = series[i];

                data = s.data;
                format = s.datapoints.format;

                if (!format) {
                    format = [];
                    // find out how to copy
                    format.push({ x: true, number: true, required: true });
                    format.push({ y: true, number: true, required: true });

                    if (s.bars.show || (s.lines.show && s.lines.fill)) {
                        var autoscale = !!((s.bars.show && s.bars.zero) || (s.lines.show && s.lines.zero));
                        format.push({ y: true, number: true, required: false, defaultValue: 0, autoscale: autoscale });
                        if (s.bars.horizontal) {
                            delete format[format.length - 1].y;
                            format[format.length - 1].x = true;
                        }
                    }

                    s.datapoints.format = format;
                }

                if (s.datapoints.pointsize != null)
                    continue; // already filled in

                s.datapoints.pointsize = format.length;

                ps = s.datapoints.pointsize;
                points = s.datapoints.points;

                var insertSteps = s.lines.show && s.lines.steps;
                s.xaxis.used = s.yaxis.used = true;

                for (j = k = 0; j < data.length; ++j, k += ps) {
                    p = data[j];

                    var nullify = p == null;
                    if (!nullify) {
                        for (m = 0; m < ps; ++m) {
                            val = p[m];
                            f = format[m];

                            if (f) {
                                if (f.number && val != null) {
                                    val = +val; // convert to number
                                    if (isNaN(val))
                                        val = null;
                                    else if (val == Infinity)
                                        val = fakeInfinity;
                                    else if (val == -Infinity)
                                        val = -fakeInfinity;
                                }

                                if (val == null) {
                                    if (f.required)
                                        nullify = true;

                                    if (f.defaultValue != null)
                                        val = f.defaultValue;
                                }
                            }

                            points[k + m] = val;
                        }
                    }

                    if (nullify) {
                        for (m = 0; m < ps; ++m) {
                            val = points[k + m];
                            if (val != null) {
                                f = format[m];
                                // extract min/max info
                                if (f.autoscale !== false) {
                                    if (f.x) {
                                        updateAxis(s.xaxis, val, val);
                                    }
                                    if (f.y) {
                                        updateAxis(s.yaxis, val, val);
                                    }
                                }
                            }
                            points[k + m] = null;
                        }
                    }
                    else {
                        // a little bit of line specific stuff that
                        // perhaps shouldn't be here, but lacking
                        // better means...
                        if (insertSteps && k > 0
                            && points[k - ps] != null
                            && points[k - ps] != points[k]
                            && points[k - ps + 1] != points[k + 1]) {
                            // copy the point to make room for a middle point
                            for (m = 0; m < ps; ++m)
                                points[k + ps + m] = points[k + m];

                            // middle point has same y
                            points[k + 1] = points[k - ps + 1];

                            // we've added a point, better reflect that
                            k += ps;
                        }
                    }
                }
            }

            // give the hooks a chance to run
            for (i = 0; i < series.length; ++i) {
                s = series[i];

                executeHooks(hooks.processDatapoints, [ s, s.datapoints]);
            }

            // second pass: find datamax/datamin for auto-scaling
            for (i = 0; i < series.length; ++i) {
                s = series[i];
                points = s.datapoints.points;
                ps = s.datapoints.pointsize;
                format = s.datapoints.format;

                var xmin = topSentry, ymin = topSentry,
                    xmax = bottomSentry, ymax = bottomSentry;

                for (j = 0; j < points.length; j += ps) {
                    if (points[j] == null)
                        continue;

                    for (m = 0; m < ps; ++m) {
                        val = points[j + m];
                        f = format[m];
                        if (!f || f.autoscale === false || val == fakeInfinity || val == -fakeInfinity)
                            continue;

                        if (f.x) {
                            if (val < xmin)
                                xmin = val;
                            if (val > xmax)
                                xmax = val;
                        }
                        if (f.y) {
                            if (val < ymin)
                                ymin = val;
                            if (val > ymax)
                                ymax = val;
                        }
                    }
                }

                if (s.bars.show) {
                    // make sure we got room for the bar on the dancing floor
                    var delta;

                    switch (s.bars.align) {
                        case "left":
                            delta = 0;
                            break;
                        case "right":
                            delta = -s.bars.barWidth;
                            break;
                        default:
                            delta = -s.bars.barWidth / 2;
                    }

                    if (s.bars.horizontal) {
                        ymin += delta;
                        ymax += delta + s.bars.barWidth;
                    }
                    else {
                        xmin += delta;
                        xmax += delta + s.bars.barWidth;
                    }
                }

                updateAxis(s.xaxis, xmin, xmax);
                updateAxis(s.yaxis, ymin, ymax);
            }

            $.each(allAxes(), function (_, axis) {
                if (axis.datamin == topSentry)
                    axis.datamin = null;
                if (axis.datamax == bottomSentry)
                    axis.datamax = null;
            });
        }

        function setupCanvases() {

            // Make sure the placeholder is clear of everything except canvases
            // from a previous plot in this container that we'll try to re-use.

            placeholder.css("padding", 0) // padding messes up the positioning
                .children().filter(function(){
                    return !$(this).hasClass("flot-overlay") && !$(this).hasClass('flot-base');
                }).remove();

            if (placeholder.css("position") == 'static')
                placeholder.css("position", "relative"); // for positioning labels and overlay

            surface = new Canvas("flot-base", placeholder);
            overlay = new Canvas("flot-overlay", placeholder); // overlay canvas for interactive features

            ctx = surface.context;
            octx = overlay.context;

            // define which element we're listening for events on
            eventHolder = $(overlay.element).unbind();

            // If we're re-using a plot object, shut down the old one

            var existing = placeholder.data("plot");

            if (existing) {
                existing.shutdown();
                overlay.clear();
            }

            // save in case we get replotted
            placeholder.data("plot", plot);
        }

        function bindEvents() {
            // bind events
            if (options.grid.hoverable) {
                eventHolder.mousemove(onMouseMove);

                // Use bind, rather than .mouseleave, because we officially
                // still support jQuery 1.2.6, which doesn't define a shortcut
                // for mouseenter or mouseleave.  This was a bug/oversight that
                // was fixed somewhere around 1.3.x.  We can return to using
                // .mouseleave when we drop support for 1.2.6.

                eventHolder.bind("mouseleave", onMouseLeave);
            }

            if (options.grid.clickable)
                eventHolder.click(onClick);

            executeHooks(hooks.bindEvents, [eventHolder]);
        }

        function shutdown() {
            if (redrawTimeout)
                clearTimeout(redrawTimeout);

            eventHolder.unbind("mousemove", onMouseMove);
            eventHolder.unbind("mouseleave", onMouseLeave);
            eventHolder.unbind("click", onClick);

            executeHooks(hooks.shutdown, [eventHolder]);
        }

        function setTransformationHelpers(axis) {
            // set helper functions on the axis, assumes plot area
            // has been computed already

            function identity(x) { return x; }

            var s, m, t = axis.options.transform || identity,
                it = axis.options.inverseTransform;

            // precompute how much the axis is scaling a point
            // in canvas space
            if (axis.direction == "x") {
                s = axis.scale = plotWidth / Math.abs(t(axis.max) - t(axis.min));
                m = Math.min(t(axis.max), t(axis.min));
            }
            else {
                s = axis.scale = plotHeight / Math.abs(t(axis.max) - t(axis.min));
                s = -s;
                m = Math.max(t(axis.max), t(axis.min));
            }

            // data point to canvas coordinate
            if (t == identity) // slight optimization
                axis.p2c = function (p) { return (p - m) * s; };
            else
                axis.p2c = function (p) { return (t(p) - m) * s; };
            // canvas coordinate to data point
            if (!it)
                axis.c2p = function (c) { return m + c / s; };
            else
                axis.c2p = function (c) { return it(m + c / s); };
        }

        function measureTickLabels(axis) {

            var opts = axis.options,
                ticks = axis.ticks || [],
                labelWidth = opts.labelWidth || 0,
                labelHeight = opts.labelHeight || 0,
                maxWidth = labelWidth || (axis.direction == "x" ? Math.floor(surface.width / (ticks.length || 1)) : null),
                legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
                layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
                font = opts.font || "flot-tick-label tickLabel";

            for (var i = 0; i < ticks.length; ++i) {

                var t = ticks[i];

                if (!t.label)
                    continue;

                var info = surface.getTextInfo(layer, t.label, font, null, maxWidth);

                labelWidth = Math.max(labelWidth, info.width);
                labelHeight = Math.max(labelHeight, info.height);
            }

            axis.labelWidth = opts.labelWidth || labelWidth;
            axis.labelHeight = opts.labelHeight || labelHeight;
        }

        function allocateAxisBoxFirstPhase(axis) {
            // find the bounding box of the axis by looking at label
            // widths/heights and ticks, make room by diminishing the
            // plotOffset; this first phase only looks at one
            // dimension per axis, the other dimension depends on the
            // other axes so will have to wait

            var lw = axis.labelWidth,
                lh = axis.labelHeight,
                pos = axis.options.position,
                isXAxis = axis.direction === "x",
                tickLength = axis.options.tickLength,
                axisMargin = options.grid.axisMargin,
                padding = options.grid.labelMargin,
                innermost = true,
                outermost = true,
                first = true,
                found = false;

            // Determine the axis's position in its direction and on its side

            $.each(isXAxis ? xaxes : yaxes, function(i, a) {
                if (a && (a.show || a.reserveSpace)) {
                    if (a === axis) {
                        found = true;
                    } else if (a.options.position === pos) {
                        if (found) {
                            outermost = false;
                        } else {
                            innermost = false;
                        }
                    }
                    if (!found) {
                        first = false;
                    }
                }
            });

            // The outermost axis on each side has no margin

            if (outermost) {
                axisMargin = 0;
            }

            // The ticks for the first axis in each direction stretch across

            if (tickLength == null) {
                tickLength = first ? "full" : 5;
            }

            if (!isNaN(+tickLength))
                padding += +tickLength;

            if (isXAxis) {
                lh += padding;

                if (pos == "bottom") {
                    plotOffset.bottom += lh + axisMargin;
                    axis.box = { top: surface.height - plotOffset.bottom, height: lh };
                }
                else {
                    axis.box = { top: plotOffset.top + axisMargin, height: lh };
                    plotOffset.top += lh + axisMargin;
                }
            }
            else {
                lw += padding;

                if (pos == "left") {
                    axis.box = { left: plotOffset.left + axisMargin, width: lw };
                    plotOffset.left += lw + axisMargin;
                }
                else {
                    plotOffset.right += lw + axisMargin;
                    axis.box = { left: surface.width - plotOffset.right, width: lw };
                }
            }

             // save for future reference
            axis.position = pos;
            axis.tickLength = tickLength;
            axis.box.padding = padding;
            axis.innermost = innermost;
        }

        function allocateAxisBoxSecondPhase(axis) {
            // now that all axis boxes have been placed in one
            // dimension, we can set the remaining dimension coordinates
            if (axis.direction == "x") {
                axis.box.left = plotOffset.left - axis.labelWidth / 2;
                axis.box.width = surface.width - plotOffset.left - plotOffset.right + axis.labelWidth;
            }
            else {
                axis.box.top = plotOffset.top - axis.labelHeight / 2;
                axis.box.height = surface.height - plotOffset.bottom - plotOffset.top + axis.labelHeight;
            }
        }

        function adjustLayoutForThingsStickingOut() {
            // possibly adjust plot offset to ensure everything stays
            // inside the canvas and isn't clipped off

            var minMargin = options.grid.minBorderMargin,
                axis, i;

            // check stuff from the plot (FIXME: this should just read
            // a value from the series, otherwise it's impossible to
            // customize)
            if (minMargin == null) {
                minMargin = 0;
                for (i = 0; i < series.length; ++i)
                    minMargin = Math.max(minMargin, 2 * (series[i].points.radius + series[i].points.lineWidth/2));
            }

            var margins = {
                left: minMargin,
                right: minMargin,
                top: minMargin,
                bottom: minMargin
            };

            // check axis labels, note we don't check the actual
            // labels but instead use the overall width/height to not
            // jump as much around with replots
            $.each(allAxes(), function (_, axis) {
                if (axis.reserveSpace && axis.ticks && axis.ticks.length) {
                    if (axis.direction === "x") {
                        margins.left = Math.max(margins.left, axis.labelWidth / 2);
                        margins.right = Math.max(margins.right, axis.labelWidth / 2);
                    } else {
                        margins.bottom = Math.max(margins.bottom, axis.labelHeight / 2);
                        margins.top = Math.max(margins.top, axis.labelHeight / 2);
                    }
                }
            });

            plotOffset.left = Math.ceil(Math.max(margins.left, plotOffset.left));
            plotOffset.right = Math.ceil(Math.max(margins.right, plotOffset.right));
            plotOffset.top = Math.ceil(Math.max(margins.top, plotOffset.top));
            plotOffset.bottom = Math.ceil(Math.max(margins.bottom, plotOffset.bottom));
        }

        function setupGrid() {
            var i, axes = allAxes(), showGrid = options.grid.show;

            // Initialize the plot's offset from the edge of the canvas

            for (var a in plotOffset) {
                var margin = options.grid.margin || 0;
                plotOffset[a] = typeof margin == "number" ? margin : margin[a] || 0;
            }

            executeHooks(hooks.processOffset, [plotOffset]);

            // If the grid is visible, add its border width to the offset

            for (var a in plotOffset) {
                if(typeof(options.grid.borderWidth) == "object") {
                    plotOffset[a] += showGrid ? options.grid.borderWidth[a] : 0;
                }
                else {
                    plotOffset[a] += showGrid ? options.grid.borderWidth : 0;
                }
            }

            $.each(axes, function (_, axis) {
                var axisOpts = axis.options;
                axis.show = axisOpts.show == null ? axis.used : axisOpts.show;
                axis.reserveSpace = axisOpts.reserveSpace == null ? axis.show : axisOpts.reserveSpace;
                setRange(axis);
            });

            if (showGrid) {

                var allocatedAxes = $.grep(axes, function (axis) {
                    return axis.show || axis.reserveSpace;
                });

                $.each(allocatedAxes, function (_, axis) {
                    // make the ticks
                    setupTickGeneration(axis);
                    setTicks(axis);
                    snapRangeToTicks(axis, axis.ticks);
                    // find labelWidth/Height for axis
                    measureTickLabels(axis);
                });

                // with all dimensions calculated, we can compute the
                // axis bounding boxes, start from the outside
                // (reverse order)
                for (i = allocatedAxes.length - 1; i >= 0; --i)
                    allocateAxisBoxFirstPhase(allocatedAxes[i]);

                // make sure we've got enough space for things that
                // might stick out
                adjustLayoutForThingsStickingOut();

                $.each(allocatedAxes, function (_, axis) {
                    allocateAxisBoxSecondPhase(axis);
                });
            }

            plotWidth = surface.width - plotOffset.left - plotOffset.right;
            plotHeight = surface.height - plotOffset.bottom - plotOffset.top;

            // now we got the proper plot dimensions, we can compute the scaling
            $.each(axes, function (_, axis) {
                setTransformationHelpers(axis);
            });

            if (showGrid) {
                drawAxisLabels();
            }

            insertLegend();
        }

        function setRange(axis) {
            var opts = axis.options,
                min = +(opts.min != null ? opts.min : axis.datamin),
                max = +(opts.max != null ? opts.max : axis.datamax),
                delta = max - min;

            if (delta == 0.0) {
                // degenerate case
                var widen = max == 0 ? 1 : 0.01;

                if (opts.min == null)
                    min -= widen;
                // always widen max if we couldn't widen min to ensure we
                // don't fall into min == max which doesn't work
                if (opts.max == null || opts.min != null)
                    max += widen;
            }
            else {
                // consider autoscaling
                var margin = opts.autoscaleMargin;
                if (margin != null) {
                    if (opts.min == null) {
                        min -= delta * margin;
                        // make sure we don't go below zero if all values
                        // are positive
                        if (min < 0 && axis.datamin != null && axis.datamin >= 0)
                            min = 0;
                    }
                    if (opts.max == null) {
                        max += delta * margin;
                        if (max > 0 && axis.datamax != null && axis.datamax <= 0)
                            max = 0;
                    }
                }
            }
            axis.min = min;
            axis.max = max;
        }

        function setupTickGeneration(axis) {
            var opts = axis.options;

            // estimate number of ticks
            var noTicks;
            if (typeof opts.ticks == "number" && opts.ticks > 0)
                noTicks = opts.ticks;
            else
                // heuristic based on the model a*sqrt(x) fitted to
                // some data points that seemed reasonable
                noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? surface.width : surface.height);

            var delta = (axis.max - axis.min) / noTicks,
                dec = -Math.floor(Math.log(delta) / Math.LN10),
                maxDec = opts.tickDecimals;

            if (maxDec != null && dec > maxDec) {
                dec = maxDec;
            }

            var magn = Math.pow(10, -dec),
                norm = delta / magn, // norm is between 1.0 and 10.0
                size;

            if (norm < 1.5) {
                size = 1;
            } else if (norm < 3) {
                size = 2;
                // special case for 2.5, requires an extra decimal
                if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
                    size = 2.5;
                    ++dec;
                }
            } else if (norm < 7.5) {
                size = 5;
            } else {
                size = 10;
            }

            size *= magn;

            if (opts.minTickSize != null && size < opts.minTickSize) {
                size = opts.minTickSize;
            }

            axis.delta = delta;
            axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
            axis.tickSize = opts.tickSize || size;

            // Time mode was moved to a plug-in in 0.8, and since so many people use it
            // we'll add an especially friendly reminder to make sure they included it.

            if (opts.mode == "time" && !axis.tickGenerator) {
                throw new Error("Time mode requires the flot.time plugin.");
            }

            // Flot supports base-10 axes; any other mode else is handled by a plug-in,
            // like flot.time.js.

            if (!axis.tickGenerator) {

                axis.tickGenerator = function (axis) {

                    var ticks = [],
                        start = floorInBase(axis.min, axis.tickSize),
                        i = 0,
                        v = Number.NaN,
                        prev;

                    do {
                        prev = v;
                        v = start + i * axis.tickSize;
                        ticks.push(v);
                        ++i;
                    } while (v < axis.max && v != prev);
                    return ticks;
                };

				axis.tickFormatter = function (value, axis) {

					var factor = axis.tickDecimals ? Math.pow(10, axis.tickDecimals) : 1;
					var formatted = "" + Math.round(value * factor) / factor;

					// If tickDecimals was specified, ensure that we have exactly that
					// much precision; otherwise default to the value's own precision.

					if (axis.tickDecimals != null) {
						var decimal = formatted.indexOf(".");
						var precision = decimal == -1 ? 0 : formatted.length - decimal - 1;
						if (precision < axis.tickDecimals) {
							return (precision ? formatted : formatted + ".") + ("" + factor).substr(1, axis.tickDecimals - precision);
						}
					}

                    return formatted;
                };
            }

            if ($.isFunction(opts.tickFormatter))
                axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); };

            if (opts.alignTicksWithAxis != null) {
                var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1];
                if (otherAxis && otherAxis.used && otherAxis != axis) {
                    // consider snapping min/max to outermost nice ticks
                    var niceTicks = axis.tickGenerator(axis);
                    if (niceTicks.length > 0) {
                        if (opts.min == null)
                            axis.min = Math.min(axis.min, niceTicks[0]);
                        if (opts.max == null && niceTicks.length > 1)
                            axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]);
                    }

                    axis.tickGenerator = function (axis) {
                        // copy ticks, scaled to this axis
                        var ticks = [], v, i;
                        for (i = 0; i < otherAxis.ticks.length; ++i) {
                            v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min);
                            v = axis.min + v * (axis.max - axis.min);
                            ticks.push(v);
                        }
                        return ticks;
                    };

                    // we might need an extra decimal since forced
                    // ticks don't necessarily fit naturally
                    if (!axis.mode && opts.tickDecimals == null) {
                        var extraDec = Math.max(0, -Math.floor(Math.log(axis.delta) / Math.LN10) + 1),
                            ts = axis.tickGenerator(axis);

                        // only proceed if the tick interval rounded
                        // with an extra decimal doesn't give us a
                        // zero at end
                        if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec))))
                            axis.tickDecimals = extraDec;
                    }
                }
            }
        }

        function setTicks(axis) {
            var oticks = axis.options.ticks, ticks = [];
            if (oticks == null || (typeof oticks == "number" && oticks > 0))
                ticks = axis.tickGenerator(axis);
            else if (oticks) {
                if ($.isFunction(oticks))
                    // generate the ticks
                    ticks = oticks(axis);
                else
                    ticks = oticks;
            }

            // clean up/labelify the supplied ticks, copy them over
            var i, v;
            axis.ticks = [];
            for (i = 0; i < ticks.length; ++i) {
                var label = null;
                var t = ticks[i];
                if (typeof t == "object") {
                    v = +t[0];
                    if (t.length > 1)
                        label = t[1];
                }
                else
                    v = +t;
                if (label == null)
                    label = axis.tickFormatter(v, axis);
                if (!isNaN(v))
                    axis.ticks.push({ v: v, label: label });
            }
        }

        function snapRangeToTicks(axis, ticks) {
            if (axis.options.autoscaleMargin && ticks.length > 0) {
                // snap to ticks
                if (axis.options.min == null)
                    axis.min = Math.min(axis.min, ticks[0].v);
                if (axis.options.max == null && ticks.length > 1)
                    axis.max = Math.max(axis.max, ticks[ticks.length - 1].v);
            }
        }

        function draw() {

            surface.clear();

            executeHooks(hooks.drawBackground, [ctx]);

            var grid = options.grid;

            // draw background, if any
            if (grid.show && grid.backgroundColor)
                drawBackground();

            if (grid.show && !grid.aboveData) {
                drawGrid();
            }

            for (var i = 0; i < series.length; ++i) {
                executeHooks(hooks.drawSeries, [ctx, series[i]]);
                drawSeries(series[i]);
            }

            executeHooks(hooks.draw, [ctx]);

            if (grid.show && grid.aboveData) {
                drawGrid();
            }

            surface.render();

            // A draw implies that either the axes or data have changed, so we
            // should probably update the overlay highlights as well.

            triggerRedrawOverlay();
        }

        function extractRange(ranges, coord) {
            var axis, from, to, key, axes = allAxes();

            for (var i = 0; i < axes.length; ++i) {
                axis = axes[i];
                if (axis.direction == coord) {
                    key = coord + axis.n + "axis";
                    if (!ranges[key] && axis.n == 1)
                        key = coord + "axis"; // support x1axis as xaxis
                    if (ranges[key]) {
                        from = ranges[key].from;
                        to = ranges[key].to;
                        break;
                    }
                }
            }

            // backwards-compat stuff - to be removed in future
            if (!ranges[key]) {
                axis = coord == "x" ? xaxes[0] : yaxes[0];
                from = ranges[coord + "1"];
                to = ranges[coord + "2"];
            }

            // auto-reverse as an added bonus
            if (from != null && to != null && from > to) {
                var tmp = from;
                from = to;
                to = tmp;
            }

            return { from: from, to: to, axis: axis };
        }

        function drawBackground() {
            ctx.save();
            ctx.translate(plotOffset.left, plotOffset.top);

            ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)");
            ctx.fillRect(0, 0, plotWidth, plotHeight);
            ctx.restore();
        }

        function drawGrid() {
            var i, axes, bw, bc;

            ctx.save();
            ctx.translate(plotOffset.left, plotOffset.top);

            // draw markings
            var markings = options.grid.markings;
            if (markings) {
                if ($.isFunction(markings)) {
                    axes = plot.getAxes();
                    // xmin etc. is backwards compatibility, to be
                    // removed in the future
                    axes.xmin = axes.xaxis.min;
                    axes.xmax = axes.xaxis.max;
                    axes.ymin = axes.yaxis.min;
                    axes.ymax = axes.yaxis.max;

                    markings = markings(axes);
                }

                for (i = 0; i < markings.length; ++i) {
                    var m = markings[i],
                        xrange = extractRange(m, "x"),
                        yrange = extractRange(m, "y");

                    // fill in missing
                    if (xrange.from == null)
                        xrange.from = xrange.axis.min;
                    if (xrange.to == null)
                        xrange.to = xrange.axis.max;
                    if (yrange.from == null)
                        yrange.from = yrange.axis.min;
                    if (yrange.to == null)
                        yrange.to = yrange.axis.max;

                    // clip
                    if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max ||
                        yrange.to < yrange.axis.min || yrange.from > yrange.axis.max)
                        continue;

                    xrange.from = Math.max(xrange.from, xrange.axis.min);
                    xrange.to = Math.min(xrange.to, xrange.axis.max);
                    yrange.from = Math.max(yrange.from, yrange.axis.min);
                    yrange.to = Math.min(yrange.to, yrange.axis.max);

                    var xequal = xrange.from === xrange.to,
                        yequal = yrange.from === yrange.to;

                    if (xequal && yequal) {
                        continue;
                    }

                    // then draw
                    xrange.from = Math.floor(xrange.axis.p2c(xrange.from));
                    xrange.to = Math.floor(xrange.axis.p2c(xrange.to));
                    yrange.from = Math.floor(yrange.axis.p2c(yrange.from));
                    yrange.to = Math.floor(yrange.axis.p2c(yrange.to));

                    if (xequal || yequal) {
                        var lineWidth = m.lineWidth || options.grid.markingsLineWidth,
                            subPixel = lineWidth % 2 ? 0.5 : 0;
                        ctx.beginPath();
                        ctx.strokeStyle = m.color || options.grid.markingsColor;
                        ctx.lineWidth = lineWidth;
                        if (xequal) {
                            ctx.moveTo(xrange.to + subPixel, yrange.from);
                            ctx.lineTo(xrange.to + subPixel, yrange.to);
                        } else {
                            ctx.moveTo(xrange.from, yrange.to + subPixel);
                            ctx.lineTo(xrange.to, yrange.to + subPixel);                            
                        }
                        ctx.stroke();
                    } else {
                        ctx.fillStyle = m.color || options.grid.markingsColor;
                        ctx.fillRect(xrange.from, yrange.to,
                                     xrange.to - xrange.from,
                                     yrange.from - yrange.to);
                    }
                }
            }

            // draw the ticks
            axes = allAxes();
            bw = options.grid.borderWidth;

            for (var j = 0; j < axes.length; ++j) {
                var axis = axes[j], box = axis.box,
                    t = axis.tickLength, x, y, xoff, yoff;
                if (!axis.show || axis.ticks.length == 0)
                    continue;

                ctx.lineWidth = 1;

                // find the edges
                if (axis.direction == "x") {
                    x = 0;
                    if (t == "full")
                        y = (axis.position == "top" ? 0 : plotHeight);
                    else
                        y = box.top - plotOffset.top + (axis.position == "top" ? box.height : 0);
                }
                else {
                    y = 0;
                    if (t == "full")
                        x = (axis.position == "left" ? 0 : plotWidth);
                    else
                        x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0);
                }

                // draw tick bar
                if (!axis.innermost) {
                    ctx.strokeStyle = axis.options.color;
                    ctx.beginPath();
                    xoff = yoff = 0;
                    if (axis.direction == "x")
                        xoff = plotWidth + 1;
                    else
                        yoff = plotHeight + 1;

                    if (ctx.lineWidth == 1) {
                        if (axis.direction == "x") {
                            y = Math.floor(y) + 0.5;
                        } else {
                            x = Math.floor(x) + 0.5;
                        }
                    }

                    ctx.moveTo(x, y);
                    ctx.lineTo(x + xoff, y + yoff);
                    ctx.stroke();
                }

                // draw ticks

                ctx.strokeStyle = axis.options.tickColor;

                ctx.beginPath();
                for (i = 0; i < axis.ticks.length; ++i) {
                    var v = axis.ticks[i].v;

                    xoff = yoff = 0;

                    if (isNaN(v) || v < axis.min || v > axis.max
                        // skip those lying on the axes if we got a border
                        || (t == "full"
                            && ((typeof bw == "object" && bw[axis.position] > 0) || bw > 0)
                            && (v == axis.min || v == axis.max)))
                        continue;

                    if (axis.direction == "x") {
                        x = axis.p2c(v);
                        yoff = t == "full" ? -plotHeight : t;

                        if (axis.position == "top")
                            yoff = -yoff;
                    }
                    else {
                        y = axis.p2c(v);
                        xoff = t == "full" ? -plotWidth : t;

                        if (axis.position == "left")
                            xoff = -xoff;
                    }

                    if (ctx.lineWidth == 1) {
                        if (axis.direction == "x")
                            x = Math.floor(x) + 0.5;
                        else
                            y = Math.floor(y) + 0.5;
                    }

                    ctx.moveTo(x, y);
                    ctx.lineTo(x + xoff, y + yoff);
                }

                ctx.stroke();
            }


            // draw border
            if (bw) {
                // If either borderWidth or borderColor is an object, then draw the border
                // line by line instead of as one rectangle
                bc = options.grid.borderColor;
                if(typeof bw == "object" || typeof bc == "object") {
                    if (typeof bw !== "object") {
                        bw = {top: bw, right: bw, bottom: bw, left: bw};
                    }
                    if (typeof bc !== "object") {
                        bc = {top: bc, right: bc, bottom: bc, left: bc};
                    }

                    if (bw.top > 0) {
                        ctx.strokeStyle = bc.top;
                        ctx.lineWidth = bw.top;
                        ctx.beginPath();
                        ctx.moveTo(0 - bw.left, 0 - bw.top/2);
                        ctx.lineTo(plotWidth, 0 - bw.top/2);
                        ctx.stroke();
                    }

                    if (bw.right > 0) {
                        ctx.strokeStyle = bc.right;
                        ctx.lineWidth = bw.right;
                        ctx.beginPath();
                        ctx.moveTo(plotWidth + bw.right / 2, 0 - bw.top);
                        ctx.lineTo(plotWidth + bw.right / 2, plotHeight);
                        ctx.stroke();
                    }

                    if (bw.bottom > 0) {
                        ctx.strokeStyle = bc.bottom;
                        ctx.lineWidth = bw.bottom;
                        ctx.beginPath();
                        ctx.moveTo(plotWidth + bw.right, plotHeight + bw.bottom / 2);
                        ctx.lineTo(0, plotHeight + bw.bottom / 2);
                        ctx.stroke();
                    }

                    if (bw.left > 0) {
                        ctx.strokeStyle = bc.left;
                        ctx.lineWidth = bw.left;
                        ctx.beginPath();
                        ctx.moveTo(0 - bw.left/2, plotHeight + bw.bottom);
                        ctx.lineTo(0- bw.left/2, 0);
                        ctx.stroke();
                    }
                }
                else {
                    ctx.lineWidth = bw;
                    ctx.strokeStyle = options.grid.borderColor;
                    ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw);
                }
            }

            ctx.restore();
        }

        function drawAxisLabels() {

            $.each(allAxes(), function (_, axis) {
                var box = axis.box,
                    legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
                    layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
                    font = axis.options.font || "flot-tick-label tickLabel",
                    tick, x, y, halign, valign;

                // Remove text before checking for axis.show and ticks.length;
                // otherwise plugins, like flot-tickrotor, that draw their own
                // tick labels will end up with both theirs and the defaults.

                surface.removeText(layer);

                if (!axis.show || axis.ticks.length == 0)
                    return;

                for (var i = 0; i < axis.ticks.length; ++i) {

                    tick = axis.ticks[i];
                    if (!tick.label || tick.v < axis.min || tick.v > axis.max)
                        continue;

                    if (axis.direction == "x") {
                        halign = "center";
                        x = plotOffset.left + axis.p2c(tick.v);
                        if (axis.position == "bottom") {
                            y = box.top + box.padding;
                        } else {
                            y = box.top + box.height - box.padding;
                            valign = "bottom";
                        }
                    } else {
                        valign = "middle";
                        y = plotOffset.top + axis.p2c(tick.v);
                        if (axis.position == "left") {
                            x = box.left + box.width - box.padding;
                            halign = "right";
                        } else {
                            x = box.left + box.padding;
                        }
                    }

                    surface.addText(layer, x, y, tick.label, font, null, null, halign, valign);
                }
            });
        }

        function drawSeries(series) {
            if (series.lines.show)
                drawSeriesLines(series);
            if (series.bars.show)
                drawSeriesBars(series);
            if (series.points.show)
                drawSeriesPoints(series);
        }

        function drawSeriesLines(series) {
            function plotLine(datapoints, xoffset, yoffset, axisx, axisy) {
                var points = datapoints.points,
                    ps = datapoints.pointsize,
                    prevx = null, prevy = null;

                ctx.beginPath();
                for (var i = ps; i < points.length; i += ps) {
                    var x1 = points[i - ps], y1 = points[i - ps + 1],
                        x2 = points[i], y2 = points[i + 1];

                    if (x1 == null || x2 == null)
                        continue;

                    // clip with ymin
                    if (y1 <= y2 && y1 < axisy.min) {
                        if (y2 < axisy.min)
                            continue;   // line segment is outside
                        // compute new intersection point
                        x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
                        y1 = axisy.min;
                    }
                    else if (y2 <= y1 && y2 < axisy.min) {
                        if (y1 < axisy.min)
                            continue;
                        x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
                        y2 = axisy.min;
                    }

                    // clip with ymax
                    if (y1 >= y2 && y1 > axisy.max) {
                        if (y2 > axisy.max)
                            continue;
                        x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
                        y1 = axisy.max;
                    }
                    else if (y2 >= y1 && y2 > axisy.max) {
                        if (y1 > axisy.max)
                            continue;
                        x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
                        y2 = axisy.max;
                    }

                    // clip with xmin
                    if (x1 <= x2 && x1 < axisx.min) {
                        if (x2 < axisx.min)
                            continue;
                        y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
                        x1 = axisx.min;
                    }
                    else if (x2 <= x1 && x2 < axisx.min) {
                        if (x1 < axisx.min)
                            continue;
                        y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
                        x2 = axisx.min;
                    }

                    // clip with xmax
                    if (x1 >= x2 && x1 > axisx.max) {
                        if (x2 > axisx.max)
                            continue;
                        y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
                        x1 = axisx.max;
                    }
                    else if (x2 >= x1 && x2 > axisx.max) {
                        if (x1 > axisx.max)
                            continue;
                        y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
                        x2 = axisx.max;
                    }

                    if (x1 != prevx || y1 != prevy)
                        ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset);

                    prevx = x2;
                    prevy = y2;
                    ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset);
                }
                ctx.stroke();
            }

            function plotLineArea(datapoints, axisx, axisy) {
                var points = datapoints.points,
                    ps = datapoints.pointsize,
                    bottom = Math.min(Math.max(0, axisy.min), axisy.max),
                    i = 0, top, areaOpen = false,
                    ypos = 1, segmentStart = 0, segmentEnd = 0;

                // we process each segment in two turns, first forward
                // direction to sketch out top, then once we hit the
                // end we go backwards to sketch the bottom
                while (true) {
                    if (ps > 0 && i > points.length + ps)
                        break;

                    i += ps; // ps is negative if going backwards

                    var x1 = points[i - ps],
                        y1 = points[i - ps + ypos],
                        x2 = points[i], y2 = points[i + ypos];

                    if (areaOpen) {
                        if (ps > 0 && x1 != null && x2 == null) {
                            // at turning point
                            segmentEnd = i;
                            ps = -ps;
                            ypos = 2;
                            continue;
                        }

                        if (ps < 0 && i == segmentStart + ps) {
                            // done with the reverse sweep
                            ctx.fill();
                            areaOpen = false;
                            ps = -ps;
                            ypos = 1;
                            i = segmentStart = segmentEnd + ps;
                            continue;
                        }
                    }

                    if (x1 == null || x2 == null)
                        continue;

                    // clip x values

                    // clip with xmin
                    if (x1 <= x2 && x1 < axisx.min) {
                        if (x2 < axisx.min)
                            continue;
                        y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
                        x1 = axisx.min;
                    }
                    else if (x2 <= x1 && x2 < axisx.min) {
                        if (x1 < axisx.min)
                            continue;
                        y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
                        x2 = axisx.min;
                    }

                    // clip with xmax
                    if (x1 >= x2 && x1 > axisx.max) {
                        if (x2 > axisx.max)
                            continue;
                        y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
                        x1 = axisx.max;
                    }
                    else if (x2 >= x1 && x2 > axisx.max) {
                        if (x1 > axisx.max)
                            continue;
                        y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
                        x2 = axisx.max;
                    }

                    if (!areaOpen) {
                        // open area
                        ctx.beginPath();
                        ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
                        areaOpen = true;
                    }

                    // now first check the case where both is outside
                    if (y1 >= axisy.max && y2 >= axisy.max) {
                        ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max));
                        ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max));
                        continue;
                    }
                    else if (y1 <= axisy.min && y2 <= axisy.min) {
                        ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min));
                        ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min));
                        continue;
                    }

                    // else it's a bit more complicated, there might
                    // be a flat maxed out rectangle first, then a
                    // triangular cutout or reverse; to find these
                    // keep track of the current x values
                    var x1old = x1, x2old = x2;

                    // clip the y values, without shortcutting, we
                    // go through all cases in turn

                    // clip with ymin
                    if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
                        x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
                        y1 = axisy.min;
                    }
                    else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) {
                        x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
                        y2 = axisy.min;
                    }

                    // clip with ymax
                    if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
                        x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
                        y1 = axisy.max;
                    }
                    else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) {
                        x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
                        y2 = axisy.max;
                    }

                    // if the x value was changed we got a rectangle
                    // to fill
                    if (x1 != x1old) {
                        ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1));
                        // it goes to (x1, y1), but we fill that below
                    }

                    // fill triangular section, this sometimes result
                    // in redundant points if (x1, y1) hasn't changed
                    // from previous line to, but we just ignore that
                    ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1));
                    ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));

                    // fill the other rectangle if it's there
                    if (x2 != x2old) {
                        ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
                        ctx.lineTo(axisx.p2c(x2old), axisy.p2c(y2));
                    }
                }
            }

            ctx.save();
            ctx.translate(plotOffset.left, plotOffset.top);
            ctx.lineJoin = "round";

            var lw = series.lines.lineWidth,
                sw = series.shadowSize;
            // FIXME: consider another form of shadow when filling is turned on
            if (lw > 0 && sw > 0) {
                // draw shadow as a thick and thin line with transparency
                ctx.lineWidth = sw;
                ctx.strokeStyle = "rgba(0,0,0,0.1)";
                // position shadow at angle from the mid of line
                var angle = Math.PI/18;
                plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis);
                ctx.lineWidth = sw/2;
                plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis);
            }

            ctx.lineWidth = lw;
            ctx.strokeStyle = series.color;
            var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight);
            if (fillStyle) {
                ctx.fillStyle = fillStyle;
                plotLineArea(series.datapoints, series.xaxis, series.yaxis);
            }

            if (lw > 0)
                plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis);
            ctx.restore();
        }

        function drawSeriesPoints(series) {
            function plotPoints(datapoints, radius, fillStyle, offset, shadow, axisx, axisy, symbol) {
                var points = datapoints.points, ps = datapoints.pointsize;

                for (var i = 0; i < points.length; i += ps) {
                    var x = points[i], y = points[i + 1];
                    if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
                        continue;

                    ctx.beginPath();
                    x = axisx.p2c(x);
                    y = axisy.p2c(y) + offset;
                    if (symbol == "circle")
                        ctx.arc(x, y, radius, 0, shadow ? Math.PI : Math.PI * 2, false);
                    else
                        symbol(ctx, x, y, radius, shadow);
                    ctx.closePath();

                    if (fillStyle) {
                        ctx.fillStyle = fillStyle;
                        ctx.fill();
                    }
                    ctx.stroke();
                }
            }

            ctx.save();
            ctx.translate(plotOffset.left, plotOffset.top);

            var lw = series.points.lineWidth,
                sw = series.shadowSize,
                radius = series.points.radius,
                symbol = series.points.symbol;

            // If the user sets the line width to 0, we change it to a very 
            // small value. A line width of 0 seems to force the default of 1.
            // Doing the conditional here allows the shadow setting to still be 
            // optional even with a lineWidth of 0.

            if( lw == 0 )
                lw = 0.0001;

            if (lw > 0 && sw > 0) {
                // draw shadow in two steps
                var w = sw / 2;
                ctx.lineWidth = w;
                ctx.strokeStyle = "rgba(0,0,0,0.1)";
                plotPoints(series.datapoints, radius, null, w + w/2, true,
                           series.xaxis, series.yaxis, symbol);

                ctx.strokeStyle = "rgba(0,0,0,0.2)";
                plotPoints(series.datapoints, radius, null, w/2, true,
                           series.xaxis, series.yaxis, symbol);
            }

            ctx.lineWidth = lw;
            ctx.strokeStyle = series.color;
            plotPoints(series.datapoints, radius,
                       getFillStyle(series.points, series.color), 0, false,
                       series.xaxis, series.yaxis, symbol);
            ctx.restore();
        }

        function drawBar(x, y, b, barLeft, barRight, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) {
            var left, right, bottom, top,
                drawLeft, drawRight, drawTop, drawBottom,
                tmp;

            // in horizontal mode, we start the bar from the left
            // instead of from the bottom so it appears to be
            // horizontal rather than vertical
            if (horizontal) {
                drawBottom = drawRight = drawTop = true;
                drawLeft = false;
                left = b;
                right = x;
                top = y + barLeft;
                bottom = y + barRight;

                // account for negative bars
                if (right < left) {
                    tmp = right;
                    right = left;
                    left = tmp;
                    drawLeft = true;
                    drawRight = false;
                }
            }
            else {
                drawLeft = drawRight = drawTop = true;
                drawBottom = false;
                left = x + barLeft;
                right = x + barRight;
                bottom = b;
                top = y;

                // account for negative bars
                if (top < bottom) {
                    tmp = top;
                    top = bottom;
                    bottom = tmp;
                    drawBottom = true;
                    drawTop = false;
                }
            }

            // clip
            if (right < axisx.min || left > axisx.max ||
                top < axisy.min || bottom > axisy.max)
                return;

            if (left < axisx.min) {
                left = axisx.min;
                drawLeft = false;
            }

            if (right > axisx.max) {
                right = axisx.max;
                drawRight = false;
            }

            if (bottom < axisy.min) {
                bottom = axisy.min;
                drawBottom = false;
            }

            if (top > axisy.max) {
                top = axisy.max;
                drawTop = false;
            }

            left = axisx.p2c(left);
            bottom = axisy.p2c(bottom);
            right = axisx.p2c(right);
            top = axisy.p2c(top);

            // fill the bar
            if (fillStyleCallback) {
                c.fillStyle = fillStyleCallback(bottom, top);
                c.fillRect(left, top, right - left, bottom - top)
            }

            // draw outline
            if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) {
                c.beginPath();

                // FIXME: inline moveTo is buggy with excanvas
                c.moveTo(left, bottom);
                if (drawLeft)
                    c.lineTo(left, top);
                else
                    c.moveTo(left, top);
                if (drawTop)
                    c.lineTo(right, top);
                else
                    c.moveTo(right, top);
                if (drawRight)
                    c.lineTo(right, bottom);
                else
                    c.moveTo(right, bottom);
                if (drawBottom)
                    c.lineTo(left, bottom);
                else
                    c.moveTo(left, bottom);
                c.stroke();
            }
        }

        function drawSeriesBars(series) {
            function plotBars(datapoints, barLeft, barRight, fillStyleCallback, axisx, axisy) {
                var points = datapoints.points, ps = datapoints.pointsize;

                for (var i = 0; i < points.length; i += ps) {
                    if (points[i] == null)
                        continue;
                    drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth);
                }
            }

            ctx.save();
            ctx.translate(plotOffset.left, plotOffset.top);

            // FIXME: figure out a way to add shadows (for instance along the right edge)
            ctx.lineWidth = series.bars.lineWidth;
            ctx.strokeStyle = series.color;

            var barLeft;

            switch (series.bars.align) {
                case "left":
                    barLeft = 0;
                    break;
                case "right":
                    barLeft = -series.bars.barWidth;
                    break;
                default:
                    barLeft = -series.bars.barWidth / 2;
            }

            var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null;
            plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, fillStyleCallback, series.xaxis, series.yaxis);
            ctx.restore();
        }

        function getFillStyle(filloptions, seriesColor, bottom, top) {
            var fill = filloptions.fill;
            if (!fill)
                return null;

            if (filloptions.fillColor)
                return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);

            var c = $.color.parse(seriesColor);
            c.a = typeof fill == "number" ? fill : 0.4;
            c.normalize();
            return c.toString();
        }

        function insertLegend() {

            if (options.legend.container != null) {
                $(options.legend.container).html("");
            } else {
                placeholder.find(".legend").remove();
            }

            if (!options.legend.show) {
                return;
            }

            var fragments = [], entries = [], rowStarted = false,
                lf = options.legend.labelFormatter, s, label;

            // Build a list of legend entries, with each having a label and a color

            for (var i = 0; i < series.length; ++i) {
                s = series[i];
                if (s.label) {
                    label = lf ? lf(s.label, s) : s.label;
                    if (label) {
                        entries.push({
                            label: label,
                            color: s.color
                        });
                    }
                }
            }

            // Sort the legend using either the default or a custom comparator

            if (options.legend.sorted) {
                if ($.isFunction(options.legend.sorted)) {
                    entries.sort(options.legend.sorted);
                } else if (options.legend.sorted == "reverse") {
                	entries.reverse();
                } else {
                    var ascending = options.legend.sorted != "descending";
                    entries.sort(function(a, b) {
                        return a.label == b.label ? 0 : (
                            (a.label < b.label) != ascending ? 1 : -1   // Logical XOR
                        );
                    });
                }
            }

            // Generate markup for the list of entries, in their final order

            for (var i = 0; i < entries.length; ++i) {

                var entry = entries[i];

                if (i % options.legend.noColumns == 0) {
                    if (rowStarted)
                        fragments.push('</tr>');
                    fragments.push('<tr>');
                    rowStarted = true;
                }

                fragments.push(
                    '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + entry.color + ';overflow:hidden"></div></div></td>' +
                    '<td class="legendLabel">' + entry.label + '</td>'
                );
            }

            if (rowStarted)
                fragments.push('</tr>');

            if (fragments.length == 0)
                return;

            var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>';
            if (options.legend.container != null)
                $(options.legend.container).html(table);
            else {
                var pos = "",
                    p = options.legend.position,
                    m = options.legend.margin;
                if (m[0] == null)
                    m = [m, m];
                if (p.charAt(0) == "n")
                    pos += 'top:' + (m[1] + plotOffset.top) + 'px;';
                else if (p.charAt(0) == "s")
                    pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;';
                if (p.charAt(1) == "e")
                    pos += 'right:' + (m[0] + plotOffset.right) + 'px;';
                else if (p.charAt(1) == "w")
                    pos += 'left:' + (m[0] + plotOffset.left) + 'px;';
                var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder);
                if (options.legend.backgroundOpacity != 0.0) {
                    // put in the transparent background
                    // separately to avoid blended labels and
                    // label boxes
                    var c = options.legend.backgroundColor;
                    if (c == null) {
                        c = options.grid.backgroundColor;
                        if (c && typeof c == "string")
                            c = $.color.parse(c);
                        else
                            c = $.color.extract(legend, 'background-color');
                        c.a = 1;
                        c = c.toString();
                    }
                    var div = legend.children();
                    $('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity);
                }
            }
        }


        // interactive features

        var highlights = [],
            redrawTimeout = null;

        // returns the data item the mouse is over, or null if none is found
        function findNearbyItem(mouseX, mouseY, seriesFilter) {
            var maxDistance = options.grid.mouseActiveRadius,
                smallestDistance = maxDistance * maxDistance + 1,
                item = null, foundPoint = false, i, j, ps;

            for (i = series.length - 1; i >= 0; --i) {
                if (!seriesFilter(series[i]))
                    continue;

                var s = series[i],
                    axisx = s.xaxis,
                    axisy = s.yaxis,
                    points = s.datapoints.points,
                    mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
                    my = axisy.c2p(mouseY),
                    maxx = maxDistance / axisx.scale,
                    maxy = maxDistance / axisy.scale;

                ps = s.datapoints.pointsize;
                // with inverse transforms, we can't use the maxx/maxy
                // optimization, sadly
                if (axisx.options.inverseTransform)
                    maxx = Number.MAX_VALUE;
                if (axisy.options.inverseTransform)
                    maxy = Number.MAX_VALUE;

                if (s.lines.show || s.points.show) {
                    for (j = 0; j < points.length; j += ps) {
                        var x = points[j], y = points[j + 1];
                        if (x == null)
                            continue;

                        // For points and lines, the cursor must be within a
                        // certain distance to the data point
                        if (x - mx > maxx || x - mx < -maxx ||
                            y - my > maxy || y - my < -maxy)
                            continue;

                        // We have to calculate distances in pixels, not in
                        // data units, because the scales of the axes may be different
                        var dx = Math.abs(axisx.p2c(x) - mouseX),
                            dy = Math.abs(axisy.p2c(y) - mouseY),
                            dist = dx * dx + dy * dy; // we save the sqrt

                        // use <= to ensure last point takes precedence
                        // (last generally means on top of)
                        if (dist < smallestDistance) {
                            smallestDistance = dist;
                            item = [i, j / ps];
                        }
                    }
                }

                if (s.bars.show && !item) { // no other point can be nearby

                    var barLeft, barRight;

                    switch (s.bars.align) {
                        case "left":
                            barLeft = 0;
                            break;
                        case "right":
                            barLeft = -s.bars.barWidth;
                            break;
                        default:
                            barLeft = -s.bars.barWidth / 2;
                    }

                    barRight = barLeft + s.bars.barWidth;

                    for (j = 0; j < points.length; j += ps) {
                        var x = points[j], y = points[j + 1], b = points[j + 2];
                        if (x == null)
                            continue;

                        // for a bar graph, the cursor must be inside the bar
                        if (series[i].bars.horizontal ?
                            (mx <= Math.max(b, x) && mx >= Math.min(b, x) &&
                             my >= y + barLeft && my <= y + barRight) :
                            (mx >= x + barLeft && mx <= x + barRight &&
                             my >= Math.min(b, y) && my <= Math.max(b, y)))
                                item = [i, j / ps];
                    }
                }
            }

            if (item) {
                i = item[0];
                j = item[1];
                ps = series[i].datapoints.pointsize;

                return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps),
                         dataIndex: j,
                         series: series[i],
                         seriesIndex: i };
            }

            return null;
        }

        function onMouseMove(e) {
            if (options.grid.hoverable)
                triggerClickHoverEvent("plothover", e,
                                       function (s) { return s["hoverable"] != false; });
        }

        function onMouseLeave(e) {
            if (options.grid.hoverable)
                triggerClickHoverEvent("plothover", e,
                                       function (s) { return false; });
        }

        function onClick(e) {
            triggerClickHoverEvent("plotclick", e,
                                   function (s) { return s["clickable"] != false; });
        }

        // trigger click or hover event (they send the same parameters
        // so we share their code)
        function triggerClickHoverEvent(eventname, event, seriesFilter) {
            var offset = eventHolder.offset(),
                canvasX = event.pageX - offset.left - plotOffset.left,
                canvasY = event.pageY - offset.top - plotOffset.top,
            pos = canvasToAxisCoords({ left: canvasX, top: canvasY });

            pos.pageX = event.pageX;
            pos.pageY = event.pageY;

            var item = findNearbyItem(canvasX, canvasY, seriesFilter);

            if (item) {
                // fill in mouse pos for any listeners out there
                item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left, 10);
                item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top, 10);
            }

            if (options.grid.autoHighlight) {
                // clear auto-highlights
                for (var i = 0; i < highlights.length; ++i) {
                    var h = highlights[i];
                    if (h.auto == eventname &&
                        !(item && h.series == item.series &&
                          h.point[0] == item.datapoint[0] &&
                          h.point[1] == item.datapoint[1]))
                        unhighlight(h.series, h.point);
                }

                if (item)
                    highlight(item.series, item.datapoint, eventname);
            }

            placeholder.trigger(eventname, [ pos, item ]);
        }

        function triggerRedrawOverlay() {
            var t = options.interaction.redrawOverlayInterval;
            if (t == -1) {      // skip event queue
                drawOverlay();
                return;
            }

            if (!redrawTimeout)
                redrawTimeout = setTimeout(drawOverlay, t);
        }

        function drawOverlay() {
            redrawTimeout = null;

            // draw highlights
            octx.save();
            overlay.clear();
            octx.translate(plotOffset.left, plotOffset.top);

            var i, hi;
            for (i = 0; i < highlights.length; ++i) {
                hi = highlights[i];

                if (hi.series.bars.show)
                    drawBarHighlight(hi.series, hi.point);
                else
                    drawPointHighlight(hi.series, hi.point);
            }
            octx.restore();

            executeHooks(hooks.drawOverlay, [octx]);
        }

        function highlight(s, point, auto) {
            if (typeof s == "number")
                s = series[s];

            if (typeof point == "number") {
                var ps = s.datapoints.pointsize;
                point = s.datapoints.points.slice(ps * point, ps * (point + 1));
            }

            var i = indexOfHighlight(s, point);
            if (i == -1) {
                highlights.push({ series: s, point: point, auto: auto });

                triggerRedrawOverlay();
            }
            else if (!auto)
                highlights[i].auto = false;
        }

        function unhighlight(s, point) {
            if (s == null && point == null) {
                highlights = [];
                triggerRedrawOverlay();
                return;
            }

            if (typeof s == "number")
                s = series[s];

            if (typeof point == "number") {
                var ps = s.datapoints.pointsize;
                point = s.datapoints.points.slice(ps * point, ps * (point + 1));
            }

            var i = indexOfHighlight(s, point);
            if (i != -1) {
                highlights.splice(i, 1);

                triggerRedrawOverlay();
            }
        }

        function indexOfHighlight(s, p) {
            for (var i = 0; i < highlights.length; ++i) {
                var h = highlights[i];
                if (h.series == s && h.point[0] == p[0]
                    && h.point[1] == p[1])
                    return i;
            }
            return -1;
        }

        function drawPointHighlight(series, point) {
            var x = point[0], y = point[1],
                axisx = series.xaxis, axisy = series.yaxis,
                highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString();

            if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
                return;

            var pointRadius = series.points.radius + series.points.lineWidth / 2;
            octx.lineWidth = pointRadius;
            octx.strokeStyle = highlightColor;
            var radius = 1.5 * pointRadius;
            x = axisx.p2c(x);
            y = axisy.p2c(y);

            octx.beginPath();
            if (series.points.symbol == "circle")
                octx.arc(x, y, radius, 0, 2 * Math.PI, false);
            else
                series.points.symbol(octx, x, y, radius, false);
            octx.closePath();
            octx.stroke();
        }

        function drawBarHighlight(series, point) {
            var highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString(),
                fillStyle = highlightColor,
                barLeft;

            switch (series.bars.align) {
                case "left":
                    barLeft = 0;
                    break;
                case "right":
                    barLeft = -series.bars.barWidth;
                    break;
                default:
                    barLeft = -series.bars.barWidth / 2;
            }

            octx.lineWidth = series.bars.lineWidth;
            octx.strokeStyle = highlightColor;

            drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth,
                    function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth);
        }

        function getColorOrGradient(spec, bottom, top, defaultColor) {
            if (typeof spec == "string")
                return spec;
            else {
                // assume this is a gradient spec; IE currently only
                // supports a simple vertical gradient properly, so that's
                // what we support too
                var gradient = ctx.createLinearGradient(0, top, 0, bottom);

                for (var i = 0, l = spec.colors.length; i < l; ++i) {
                    var c = spec.colors[i];
                    if (typeof c != "string") {
                        var co = $.color.parse(defaultColor);
                        if (c.brightness != null)
                            co = co.scale('rgb', c.brightness);
                        if (c.opacity != null)
                            co.a *= c.opacity;
                        c = co.toString();
                    }
                    gradient.addColorStop(i / (l - 1), c);
                }

                return gradient;
            }
        }
    }

    // Add the plot function to the top level of the jQuery object

    $.plot = function(placeholder, data, options) {
        //var t0 = new Date();
        var plot = new Plot($(placeholder), data, options, $.plot.plugins);
        //(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime()));
        return plot;
    };

    $.plot.version = "0.8.3";

    $.plot.plugins = [];

    // Also add the plot function as a chainable property

    $.fn.plot = function(data, options) {
        return this.each(function() {
            $.plot(this, data, options);
        });
    };

    // round to nearby lower multiple of base
    function floorInBase(n, base) {
        return base * Math.floor(n / base);
    }

})(jQuery);
/* --------------------------------------------------------------
         js/libs/flot/jquery.flot.time.js
   -------------------------------------------------------------- */
/* Pretty handling of time axes.

Copyright (c) 2007-2014 IOLA and Ole Laursen.
Licensed under the MIT license.

Set axis.mode to "time" to enable. See the section "Time series data" in
API.txt for details.

*/

(function($) {

    var options = {
        xaxis: {
            timezone: null,     // "browser" for local to the client or timezone for timezone-js
            timeformat: null,   // format string to use
            twelveHourClock: false, // 12 or 24 time in time mode
            monthNames: null    // list of names of months
        }
    };

    // round to nearby lower multiple of base

    function floorInBase(n, base) {
        return base * Math.floor(n / base);
    }

    // Returns a string with the date d formatted according to fmt.
    // A subset of the Open Group's strftime format is supported.

    function formatDate(d, fmt, monthNames, dayNames) {

        if (typeof d.strftime == "function") {
            return d.strftime(fmt);
        }

        var leftPad = function(n, pad) {
            n = "" + n;
            pad = "" + (pad == null ? "0" : pad);
            return n.length == 1 ? pad + n : n;
        };

        var r = [];
        var escape = false;
        var hours = d.getHours();
        var isAM = hours < 12;

        if (monthNames == null) {
            monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
        }

        if (dayNames == null) {
            dayNames = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
        }

        var hours12;

        if (hours > 12) {
            hours12 = hours - 12;
        } else if (hours == 0) {
            hours12 = 12;
        } else {
            hours12 = hours;
        }

        for (var i = 0; i < fmt.length; ++i) {

            var c = fmt.charAt(i);

            if (escape) {
                switch (c) {
                    case 'a': c = "" + dayNames[d.getDay()]; break;
                    case 'b': c = "" + monthNames[d.getMonth()]; break;
                    case 'd': c = leftPad(d.getDate()); break;
                    case 'e': c = leftPad(d.getDate(), " "); break;
                    case 'h':   // For back-compat with 0.7; remove in 1.0
                    case 'H': c = leftPad(hours); break;
                    case 'I': c = leftPad(hours12); break;
                    case 'l': c = leftPad(hours12, " "); break;
                    case 'm': c = leftPad(d.getMonth() + 1); break;
                    case 'M': c = leftPad(d.getMinutes()); break;
                    // quarters not in Open Group's strftime specification
                    case 'q':
                        c = "" + (Math.floor(d.getMonth() / 3) + 1); break;
                    case 'S': c = leftPad(d.getSeconds()); break;
                    case 'y': c = leftPad(d.getFullYear() % 100); break;
                    case 'Y': c = "" + d.getFullYear(); break;
                    case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
                    case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
                    case 'w': c = "" + d.getDay(); break;
                }
                r.push(c);
                escape = false;
            } else {
                if (c == "%") {
                    escape = true;
                } else {
                    r.push(c);
                }
            }
        }

        return r.join("");
    }

    // To have a consistent view of time-based data independent of which time
    // zone the client happens to be in we need a date-like object independent
    // of time zones.  This is done through a wrapper that only calls the UTC
    // versions of the accessor methods.

    function makeUtcWrapper(d) {

        function addProxyMethod(sourceObj, sourceMethod, targetObj, targetMethod) {
            sourceObj[sourceMethod] = function() {
                return targetObj[targetMethod].apply(targetObj, arguments);
            };
        };

        var utc = {
            date: d
        };

        // support strftime, if found

        if (d.strftime != undefined) {
            addProxyMethod(utc, "strftime", d, "strftime");
        }

        addProxyMethod(utc, "getTime", d, "getTime");
        addProxyMethod(utc, "setTime", d, "setTime");

        var props = ["Date", "Day", "FullYear", "Hours", "Milliseconds", "Minutes", "Month", "Seconds"];

        for (var p = 0; p < props.length; p++) {
            addProxyMethod(utc, "get" + props[p], d, "getUTC" + props[p]);
            addProxyMethod(utc, "set" + props[p], d, "setUTC" + props[p]);
        }

        return utc;
    };

    // select time zone strategy.  This returns a date-like object tied to the
    // desired timezone

    function dateGenerator(ts, opts) {
        if (opts.timezone == "browser") {
            return new Date(ts);
        } else if (!opts.timezone || opts.timezone == "utc") {
            return makeUtcWrapper(new Date(ts));
        } else if (typeof timezoneJS != "undefined" && typeof timezoneJS.Date != "undefined") {
            var d = new timezoneJS.Date();
            // timezone-js is fickle, so be sure to set the time zone before
            // setting the time.
            d.setTimezone(opts.timezone);
            d.setTime(ts);
            return d;
        } else {
            return makeUtcWrapper(new Date(ts));
        }
    }
    
    // map of app. size of time units in milliseconds

    var timeUnitSize = {
        "second": 1000,
        "minute": 60 * 1000,
        "hour": 60 * 60 * 1000,
        "day": 24 * 60 * 60 * 1000,
        "month": 30 * 24 * 60 * 60 * 1000,
        "quarter": 3 * 30 * 24 * 60 * 60 * 1000,
        "year": 365.2425 * 24 * 60 * 60 * 1000
    };

    // the allowed tick sizes, after 1 year we use
    // an integer algorithm

    var baseSpec = [
        [1, "second"], [2, "second"], [5, "second"], [10, "second"],
        [30, "second"], 
        [1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
        [30, "minute"], 
        [1, "hour"], [2, "hour"], [4, "hour"],
        [8, "hour"], [12, "hour"],
        [1, "day"], [2, "day"], [3, "day"],
        [0.25, "month"], [0.5, "month"], [1, "month"],
        [2, "month"]
    ];

    // we don't know which variant(s) we'll need yet, but generating both is
    // cheap

    var specMonths = baseSpec.concat([[3, "month"], [6, "month"],
        [1, "year"]]);
    var specQuarters = baseSpec.concat([[1, "quarter"], [2, "quarter"],
        [1, "year"]]);

    function init(plot) {
        plot.hooks.processOptions.push(function (plot, options) {
            $.each(plot.getAxes(), function(axisName, axis) {

                var opts = axis.options;

                if (opts.mode == "time") {
                    axis.tickGenerator = function(axis) {

                        var ticks = [];
                        var d = dateGenerator(axis.min, opts);
                        var minSize = 0;

                        // make quarter use a possibility if quarters are
                        // mentioned in either of these options

                        var spec = (opts.tickSize && opts.tickSize[1] ===
                            "quarter") ||
                            (opts.minTickSize && opts.minTickSize[1] ===
                            "quarter") ? specQuarters : specMonths;

                        if (opts.minTickSize != null) {
                            if (typeof opts.tickSize == "number") {
                                minSize = opts.tickSize;
                            } else {
                                minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]];
                            }
                        }

                        for (var i = 0; i < spec.length - 1; ++i) {
                            if (axis.delta < (spec[i][0] * timeUnitSize[spec[i][1]]
                                              + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2
                                && spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) {
                                break;
                            }
                        }

                        var size = spec[i][0];
                        var unit = spec[i][1];

                        // special-case the possibility of several years

                        if (unit == "year") {

                            // if given a minTickSize in years, just use it,
                            // ensuring that it's an integer

                            if (opts.minTickSize != null && opts.minTickSize[1] == "year") {
                                size = Math.floor(opts.minTickSize[0]);
                            } else {

                                var magn = Math.pow(10, Math.floor(Math.log(axis.delta / timeUnitSize.year) / Math.LN10));
                                var norm = (axis.delta / timeUnitSize.year) / magn;

                                if (norm < 1.5) {
                                    size = 1;
                                } else if (norm < 3) {
                                    size = 2;
                                } else if (norm < 7.5) {
                                    size = 5;
                                } else {
                                    size = 10;
                                }

                                size *= magn;
                            }

                            // minimum size for years is 1

                            if (size < 1) {
                                size = 1;
                            }
                        }

                        axis.tickSize = opts.tickSize || [size, unit];
                        var tickSize = axis.tickSize[0];
                        unit = axis.tickSize[1];

                        var step = tickSize * timeUnitSize[unit];

                        if (unit == "second") {
                            d.setSeconds(floorInBase(d.getSeconds(), tickSize));
                        } else if (unit == "minute") {
                            d.setMinutes(floorInBase(d.getMinutes(), tickSize));
                        } else if (unit == "hour") {
                            d.setHours(floorInBase(d.getHours(), tickSize));
                        } else if (unit == "month") {
                            d.setMonth(floorInBase(d.getMonth(), tickSize));
                        } else if (unit == "quarter") {
                            d.setMonth(3 * floorInBase(d.getMonth() / 3,
                                tickSize));
                        } else if (unit == "year") {
                            d.setFullYear(floorInBase(d.getFullYear(), tickSize));
                        }

                        // reset smaller components

                        d.setMilliseconds(0);

                        if (step >= timeUnitSize.minute) {
                            d.setSeconds(0);
                        }
                        if (step >= timeUnitSize.hour) {
                            d.setMinutes(0);
                        }
                        if (step >= timeUnitSize.day) {
                            d.setHours(0);
                        }
                        if (step >= timeUnitSize.day * 4) {
                            d.setDate(1);
                        }
                        if (step >= timeUnitSize.month * 2) {
                            d.setMonth(floorInBase(d.getMonth(), 3));
                        }
                        if (step >= timeUnitSize.quarter * 2) {
                            d.setMonth(floorInBase(d.getMonth(), 6));
                        }
                        if (step >= timeUnitSize.year) {
                            d.setMonth(0);
                        }

                        var carry = 0;
                        var v = Number.NaN;
                        var prev;

                        do {

                            prev = v;
                            v = d.getTime();
                            ticks.push(v);

                            if (unit == "month" || unit == "quarter") {
                                if (tickSize < 1) {

                                    // a bit complicated - we'll divide the
                                    // month/quarter up but we need to take
                                    // care of fractions so we don't end up in
                                    // the middle of a day

                                    d.setDate(1);
                                    var start = d.getTime();
                                    d.setMonth(d.getMonth() +
                                        (unit == "quarter" ? 3 : 1));
                                    var end = d.getTime();
                                    d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
                                    carry = d.getHours();
                                    d.setHours(0);
                                } else {
                                    d.setMonth(d.getMonth() +
                                        tickSize * (unit == "quarter" ? 3 : 1));
                                }
                            } else if (unit == "year") {
                                d.setFullYear(d.getFullYear() + tickSize);
                            } else {
                                d.setTime(v + step);
                            }
                        } while (v < axis.max && v != prev);

                        return ticks;
                    };

                    axis.tickFormatter = function (v, axis) {

                        var d = dateGenerator(v, axis.options);

                        // first check global format

                        if (opts.timeformat != null) {
                            return formatDate(d, opts.timeformat, opts.monthNames, opts.dayNames);
                        }

                        // possibly use quarters if quarters are mentioned in
                        // any of these places

                        var useQuarters = (axis.options.tickSize &&
                                axis.options.tickSize[1] == "quarter") ||
                            (axis.options.minTickSize &&
                                axis.options.minTickSize[1] == "quarter");

                        var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
                        var span = axis.max - axis.min;
                        var suffix = (opts.twelveHourClock) ? " %p" : "";
                        var hourCode = (opts.twelveHourClock) ? "%I" : "%H";
                        var fmt;

                        if (t < timeUnitSize.minute) {
                            fmt = hourCode + ":%M:%S" + suffix;
                        } else if (t < timeUnitSize.day) {
                            if (span < 2 * timeUnitSize.day) {
                                fmt = hourCode + ":%M" + suffix;
                            } else {
                                fmt = "%b %d " + hourCode + ":%M" + suffix;
                            }
                        } else if (t < timeUnitSize.month) {
                            fmt = "%b %d";
                        } else if ((useQuarters && t < timeUnitSize.quarter) ||
                            (!useQuarters && t < timeUnitSize.year)) {
                            if (span < timeUnitSize.year) {
                                fmt = "%b";
                            } else {
                                fmt = "%b %Y";
                            }
                        } else if (useQuarters && t < timeUnitSize.year) {
                            if (span < timeUnitSize.year) {
                                fmt = "Q%q";
                            } else {
                                fmt = "Q%q %Y";
                            }
                        } else {
                            fmt = "%Y";
                        }

                        var rt = formatDate(d, fmt, opts.monthNames, opts.dayNames);

                        return rt;
                    };
                }
            });
        });
    }

    $.plot.plugins.push({
        init: init,
        options: options,
        name: 'time',
        version: '1.0'
    });

    // Time-axis support used to be in Flot core, which exposed the
    // formatDate function on the plot object.  Various plugins depend
    // on the function, so we need to re-expose it here.

    $.plot.formatDate = formatDate;
    $.plot.dateGenerator = dateGenerator;

})(jQuery);
/* --------------------------------------------------------------
         js/libs/jcanvas/jcanvas.min.js
   -------------------------------------------------------------- */
/*
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 Released under the MIT license
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/* --------------------------------------------------------------
         js/libs/jszip.min.js
   -------------------------------------------------------------- */
/*!

JSZip v3.1.3 - A Javascript class for generating and reading zip files
<http://stuartk.com/jszip>

(c) 2009-2016 Stuart Knightley <stuart [at] stuartk.com>
Dual licenced under the MIT license or GPLv3. See https://raw.github.com/Stuk/jszip/master/LICENSE.markdown.

JSZip uses the library pako released under the MIT license :
https://github.com/nodeca/pako/blob/master/LICENSE
*/
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b=a.meta.percent||0,c=this.entriesCount,d=this._sources.length;this.accumulate?this.contentBuffer.push(a):(this.bytesWritten+=a.data.length,f.prototype.push.call(this,{data:a.data,meta:{currentFile:this.currentFile,percent:c?(b+100*(c-d-1))/c:100}}))},d.prototype.openedSource=function(a){this.currentSourceOffset=this.bytesWritten,this.currentFile=a.file.name;var b=this.streamFiles&&!a.file.dir;if(b){var c=m(a,b,!1,this.currentSourceOffset,this.zipPlatform,this.encodeFileName);this.push({data:c.fileRecord,meta:{percent:0}})}else this.accumulate=!0},d.prototype.closedSource=function(a){this.accumulate=!1;var b=this.streamFiles&&!a.file.dir,c=m(a,b,!0,this.currentSourceOffset,this.zipPlatform,this.encodeFileName);if(this.dirRecords.push(c.dirRecord),b)this.push({data:o(a),meta:{percent:100}});else for(this.push({data:c.fileRecord,meta:{percent:0}});this.contentBuffer.length;)this.push(this.contentBuffer.shift());this.currentFile=null},d.prototype.flush=function(){for(var a=this.bytesWritten,b=0;b<this.dirRecords.length;b++)this.push({data:this.dirRecords[b],meta:{percent:100}});var c=this.bytesWritten-a,d=n(this.dirRecords.length,c,a,this.zipComment,this.encodeFileName);this.push({data:d,meta:{percent:100}})},d.prototype.prepareNextSource=function(){this.previous=this._sources.shift(),this.openedSource(this.previous.streamInfo),this.isPaused?this.previous.pause():this.previous.resume()},d.prototype.registerPrevious=function(a){this._sources.push(a);var b=this;return a.on("data",function(a){b.processChunk(a)}),a.on("end",function(){b.closedSource(b.previous.streamInfo),b._sources.length?b.prepareNextSource():b.end()}),a.on("error",function(a){b.error(a)}),this},d.prototype.resume=function(){return!!f.prototype.resume.call(this)&&(!this.previous&&this._sources.length?(this.prepareNextSource(),!0):this.previous||this._sources.length||this.generatedError?void 0:(this.end(),!0))},d.prototype.error=function(a){var b=this._sources;if(!f.prototype.error.call(this,a))return!1;for(var c=0;c<b.length;c++)try{b[c].error(a)}catch(a){}return!0},d.prototype.lock=function(){f.prototype.lock.call(this);for(var a=this._sources,b=0;b<a.length;b++)a[b].lock()},b.exports=d},{"../crc32":4,"../signature":23,"../stream/GenericWorker":28,"../utf8":31,"../utils":32}],9:[function(a,b,c){"use strict";var d=a("../compressions"),e=a("./ZipFileWorker"),f=function(a,b){var c=a||b,e=d[c];if(!e)throw new Error(c+" is not a valid compression method !");return e};c.generateWorker=function(a,b,c){var d=new e(b.streamFiles,c,b.platform,b.encodeFileName),g=0;try{a.forEach(function(a,c){g++;var e=f(c.options.compression,b.compression),h=c.options.compressionOptions||b.compressionOptions||{},i=c.dir,j=c.date;c._compressWorker(e,h).withStreamInfo("file",{name:a,dir:i,date:j,comment:c.comment||"",unixPermissions:c.unixPermissions,dosPermissions:c.dosPermissions}).pipe(d)}),d.entriesCount=g}catch(h){d.error(h)}return 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Buffer,newBuffer:function(a,b){return new Buffer(a,b)},isBuffer:function(a){return Buffer.isBuffer(a)},isStream:function(a){return a&&"function"==typeof a.on&&"function"==typeof a.pause&&"function"==typeof a.resume}}},{}],15:[function(a,b,c){"use strict";function d(a){return"[object RegExp]"===Object.prototype.toString.call(a)}var e=a("./utf8"),f=a("./utils"),g=a("./stream/GenericWorker"),h=a("./stream/StreamHelper"),i=a("./defaults"),j=a("./compressedObject"),k=a("./zipObject"),l=a("./generate"),m=a("./nodejsUtils"),n=a("./nodejs/NodejsStreamInputAdapter"),o=function(a,b,c){var d,e=f.getTypeOf(b),h=f.extend(c||{},i);h.date=h.date||new Date,null!==h.compression&&(h.compression=h.compression.toUpperCase()),"string"==typeof h.unixPermissions&&(h.unixPermissions=parseInt(h.unixPermissions,8)),h.unixPermissions&&16384&h.unixPermissions&&(h.dir=!0),h.dosPermissions&&16&h.dosPermissions&&(h.dir=!0),h.dir&&(a=q(a)),h.createFolders&&(d=p(a))&&r.call(this,d,!0);var l="string"===e&&h.binary===!1&&h.base64===!1;c&&"undefined"!=typeof c.binary||(h.binary=!l);var o=b instanceof j&&0===b.uncompressedSize;(o||h.dir||!b||0===b.length)&&(h.base64=!1,h.binary=!0,b="",h.compression="STORE",e="string");var s=null;s=b instanceof j||b instanceof g?b:m.isNode&&m.isStream(b)?new n(a,b):f.prepareContent(a,b,h.binary,h.optimizedBinaryString,h.base64);var t=new k(a,s,h);this.files[a]=t},p=function(a){"/"===a.slice(-1)&&(a=a.substring(0,a.length-1));var b=a.lastIndexOf("/");return b>0?a.substring(0,b):""},q=function(a){return"/"!==a.slice(-1)&&(a+="/"),a},r=function(a,b){return b="undefined"!=typeof b?b:i.createFolders,a=q(a),this.files[a]||o.call(this,a,null,{dir:!0,createFolders:b}),this.files[a]},s={load:function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.")},forEach:function(a){var b,c,d;for(b in this.files)this.files.hasOwnProperty(b)&&(d=this.files[b],c=b.slice(this.root.length,b.length),c&&b.slice(0,this.root.length)===this.root&&a(c,d))},filter:function(a){var b=[];return this.forEach(function(c,d){a(c,d)&&b.push(d)}),b},file:function(a,b,c){if(1===arguments.length){if(d(a)){var e=a;return this.filter(function(a,b){return!b.dir&&e.test(a)})}var f=this.files[this.root+a];return f&&!f.dir?f:null}return a=this.root+a,o.call(this,a,b,c),this},folder:function(a){if(!a)return this;if(d(a))return this.filter(function(b,c){return c.dir&&a.test(b)});var b=this.root+a,c=r.call(this,b),e=this.clone();return e.root=c.name,e},remove:function(a){a=this.root+a;var b=this.files[a];if(b||("/"!==a.slice(-1)&&(a+="/"),b=this.files[a]),b&&!b.dir)delete this.files[a];else for(var c=this.filter(function(b,c){return c.name.slice(0,a.length)===a}),d=0;d<c.length;d++)delete this.files[c[d].name];return this},generate:function(a){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.")},generateInternalStream:function(a){var b,c={};try{if(c=f.extend(a||{},{streamFiles:!1,compression:"STORE",compressionOptions:null,type:"",platform:"DOS",comment:null,mimeType:"application/zip",encodeFileName:e.utf8encode}),c.type=c.type.toLowerCase(),c.compression=c.compression.toUpperCase(),"binarystring"===c.type&&(c.type="string"),!c.type)throw new Error("No output type specified.");f.checkSupport(c.type),"darwin"!==c.platform&&"freebsd"!==c.platform&&"linux"!==c.platform&&"sunos"!==c.platform||(c.platform="UNIX"),"win32"===c.platform&&(c.platform="DOS");var d=c.comment||this.comment||"";b=l.generateWorker(this,c,d)}catch(i){b=new g("error"),b.error(i)}return new h(b,c.type||"string",c.mimeType)},generateAsync:function(a,b){return this.generateInternalStream(a).accumulate(b)},generateNodeStream:function(a,b){return 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a=this.reader.readData(this.zipCommentLength),b=i.uint8array?"uint8array":"array",c=f.transformTo(b,a);this.zipComment=this.loadOptions.decodeFileName(c)},readBlockZip64EndOfCentral:function(){this.zip64EndOfCentralSize=this.reader.readInt(8),this.reader.skip(4),this.diskNumber=this.reader.readInt(4),this.diskWithCentralDirStart=this.reader.readInt(4),this.centralDirRecordsOnThisDisk=this.reader.readInt(8),this.centralDirRecords=this.reader.readInt(8),this.centralDirSize=this.reader.readInt(8),this.centralDirOffset=this.reader.readInt(8),this.zip64ExtensibleData={};for(var a,b,c,d=this.zip64EndOfCentralSize-44,e=0;e<d;)a=this.reader.readInt(2),b=this.reader.readInt(4),c=this.reader.readData(b),this.zip64ExtensibleData[a]={id:a,length:b,value:c}},readBlockZip64EndOfCentralLocator:function(){if(this.diskWithZip64CentralDirStart=this.reader.readInt(4),this.relativeOffsetEndOfZip64CentralDir=this.reader.readInt(8),this.disksCount=this.reader.readInt(4),this.disksCount>1)throw new Error("Multi-volumes zip are not supported")},readLocalFiles:function(){var a,b;for(a=0;a<this.files.length;a++)b=this.files[a],this.reader.setIndex(b.localHeaderOffset),this.checkSignature(g.LOCAL_FILE_HEADER),b.readLocalPart(this.reader),b.handleUTF8(),b.processAttributes()},readCentralDir:function(){var a;for(this.reader.setIndex(this.centralDirOffset);this.reader.readAndCheckSignature(g.CENTRAL_FILE_HEADER);)a=new h({zip64:this.zip64},this.loadOptions),a.readCentralPart(this.reader),this.files.push(a);if(this.centralDirRecords!==this.files.length&&0!==this.centralDirRecords&&0===this.files.length)throw new Error("Corrupted zip or bug: expected "+this.centralDirRecords+" records in central dir, got "+this.files.length)},readEndOfCentral:function(){var a=this.reader.lastIndexOfSignature(g.CENTRAL_DIRECTORY_END);if(a<0){var b=!this.isSignature(0,g.LOCAL_FILE_HEADER);throw b?new Error("Can't find end of central directory : is this a zip file ? 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b,c,d,e=a.index+this.extraFieldsLength;for(this.extraFields||(this.extraFields={});a.index<e;)b=a.readInt(2),c=a.readInt(2),d=a.readData(c),this.extraFields[b]={id:b,length:c,value:d}},handleUTF8:function(){var a=k.uint8array?"uint8array":"array";if(this.useUTF8())this.fileNameStr=i.utf8decode(this.fileName),this.fileCommentStr=i.utf8decode(this.fileComment);else{var b=this.findExtraFieldUnicodePath();if(null!==b)this.fileNameStr=b;else{var c=f.transformTo(a,this.fileName);this.fileNameStr=this.loadOptions.decodeFileName(c)}var d=this.findExtraFieldUnicodeComment();if(null!==d)this.fileCommentStr=d;else{var e=f.transformTo(a,this.fileComment);this.fileCommentStr=this.loadOptions.decodeFileName(e)}}},findExtraFieldUnicodePath:function(){var a=this.extraFields[28789];if(a){var b=e(a.value);return 1!==b.readInt(1)?null:h(this.fileName)!==b.readInt(4)?null:i.utf8decode(b.readData(a.length-5))}return null},findExtraFieldUnicodeComment:function(){var a=this.extraFields[25461];if(a){var b=e(a.value);return 1!==b.readInt(1)?null:h(this.fileComment)!==b.readInt(4)?null:i.utf8decode(b.readData(a.length-5))}return null}},b.exports=d},{"./compressedObject":2,"./compressions":3,"./crc32":4,"./reader/readerFor":22,"./support":30,"./utf8":31,"./utils":32}],35:[function(a,b,c){"use strict";var d=a("./stream/StreamHelper"),e=a("./stream/DataWorker"),f=a("./utf8"),g=a("./compressedObject"),h=a("./stream/GenericWorker"),i=function(a,b,c){this.name=a,this.dir=c.dir,this.date=c.date,this.comment=c.comment,this.unixPermissions=c.unixPermissions,this.dosPermissions=c.dosPermissions,this._data=b,this._dataBinary=c.binary,this.options={compression:c.compression,compressionOptions:c.compressionOptions}};i.prototype={internalStream:function(a){var b=a.toLowerCase(),c="string"===b||"text"===b;"binarystring"!==b&&"text"!==b||(b="string");var e=this._decompressWorker(),g=!this._dataBinary;return g&&!c&&(e=e.pipe(new f.Utf8EncodeWorker)),!g&&c&&(e=e.pipe(new f.Utf8DecodeWorker)),new 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s(32,258,258,4096,p)],c.deflateInit=z,c.deflateInit2=y,c.deflateReset=w,c.deflateResetKeep=v,c.deflateSetHeader=x,c.deflate=A,c.deflateEnd=B,c.deflateSetDictionary=C,c.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":62,"./adler32":64,"./crc32":66,"./messages":72,"./trees":73}],68:[function(a,b,c){"use strict";function d(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1}b.exports=d},{}],69:[function(a,b,c){"use strict";var d=30,e=12;b.exports=function(a,b){var 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a}if(p>>>=w,q-=w,w=h-i,y>w){if(w=y-w,w>m&&c.sane){a.msg="invalid distance too far back",c.mode=d;break a}if(z=0,A=o,0===n){if(z+=l-w,w<x){x-=w;do C[h++]=o[z++];while(--w);z=h-y,A=C}}else if(n<w){if(z+=l+n-w,w-=n,w<x){x-=w;do C[h++]=o[z++];while(--w);if(z=0,n<x){w=n,x-=w;do C[h++]=o[z++];while(--w);z=h-y,A=C}}}else if(z+=n-w,w<x){x-=w;do C[h++]=o[z++];while(--w);z=h-y,A=C}for(;x>2;)C[h++]=A[z++],C[h++]=A[z++],C[h++]=A[z++],x-=3;x&&(C[h++]=A[z++],x>1&&(C[h++]=A[z++]))}else{z=h-y;do C[h++]=C[z++],C[h++]=C[z++],C[h++]=C[z++],x-=3;while(x>2);x&&(C[h++]=C[z++],x>1&&(C[h++]=C[z++]))}break}}break}}while(f<g&&h<j);x=q>>3,f-=x,q-=x<<3,p&=(1<<q)-1,a.next_in=f,a.next_out=h,a.avail_in=f<g?5+(g-f):5-(f-g),a.avail_out=h<j?257+(j-h):257-(h-j),c.hold=p,c.bits=q}},{}],70:[function(a,b,c){"use strict";function d(a){return(a>>>24&255)+(a>>>8&65280)+((65280&a)<<8)+((255&a)<<24)}function 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P:if(1024&c.flags){for(;n<16;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}c.length=m,c.head&&(c.head.extra_len=m),512&c.flags&&(Ba[0]=255&m,Ba[1]=m>>>8&255,c.check=u(c.check,Ba,2,0)),m=0,n=0}else c.head&&(c.head.extra=null);c.mode=Q;case Q:if(1024&c.flags&&(q=c.length,q>i&&(q=i),q&&(c.head&&(wa=c.head.extra_len-c.length,c.head.extra||(c.head.extra=new Array(c.head.extra_len)),s.arraySet(c.head.extra,e,g,q,wa)),512&c.flags&&(c.check=u(c.check,e,q,g)),i-=q,g+=q,c.length-=q),c.length))break a;c.length=0,c.mode=R;case R:if(2048&c.flags){if(0===i)break a;q=0;do wa=e[g+q++],c.head&&wa&&c.length<65536&&(c.head.name+=String.fromCharCode(wa));while(wa&&q<i);if(512&c.flags&&(c.check=u(c.check,e,q,g)),i-=q,g+=q,wa)break a}else c.head&&(c.head.name=null);c.length=0,c.mode=S;case S:if(4096&c.flags){if(0===i)break a;q=0;do wa=e[g+q++],c.head&&wa&&c.length<65536&&(c.head.comment+=String.fromCharCode(wa));while(wa&&q<i);if(512&c.flags&&(c.check=u(c.check,e,q,g)),i-=q,g+=q,wa)break a}else c.head&&(c.head.comment=null);c.mode=T;case T:if(512&c.flags){for(;n<16;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}if(m!==(65535&c.check)){a.msg="header crc mismatch",c.mode=ma;break}m=0,n=0}c.head&&(c.head.hcrc=c.flags>>9&1,c.head.done=!0),a.adler=c.check=0,c.mode=W;break;case U:for(;n<32;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}a.adler=c.check=d(m),m=0,n=0,c.mode=V;case V:if(0===c.havedict)return a.next_out=h,a.avail_out=j,a.next_in=g,a.avail_in=i,c.hold=m,c.bits=n,F;a.adler=c.check=1,c.mode=W;case W:if(b===B||b===C)break a;case X:if(c.last){m>>>=7&n,n-=7&n,c.mode=ja;break}for(;n<3;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}switch(c.last=1&m,m>>>=1,n-=1,3&m){case 0:c.mode=Y;break;case 1:if(k(c),c.mode=ca,b===C){m>>>=2,n-=2;break a}break;case 2:c.mode=_;break;case 3:a.msg="invalid block type",c.mode=ma}m>>>=2,n-=2;break;case Y:for(m>>>=7&n,n-=7&n;n<32;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}if((65535&m)!==(m>>>16^65535)){a.msg="invalid stored block 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fa:for(;Aa=c.distcode[m&(1<<c.distbits)-1],qa=Aa>>>24,ra=Aa>>>16&255,sa=65535&Aa,!(qa<=n);){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}if(0===(240&ra)){for(ta=qa,ua=ra,va=sa;Aa=c.distcode[va+((m&(1<<ta+ua)-1)>>ta)],qa=Aa>>>24,ra=Aa>>>16&255,sa=65535&Aa,!(ta+qa<=n);){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}m>>>=ta,n-=ta,c.back+=ta}if(m>>>=qa,n-=qa,c.back+=qa,64&ra){a.msg="invalid distance code",c.mode=ma;break}c.offset=sa,c.extra=15&ra,c.mode=ga;case ga:if(c.extra){for(za=c.extra;n<za;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}c.offset+=m&(1<<c.extra)-1,m>>>=c.extra,n-=c.extra,c.back+=c.extra}if(c.offset>c.dmax){a.msg="invalid distance too far back",c.mode=ma;break}c.mode=ha;case ha:if(0===j)break a;if(q=p-j,c.offset>q){if(q=c.offset-q,q>c.whave&&c.sane){a.msg="invalid distance too far back",c.mode=ma;break}q>c.wnext?(q-=c.wnext,r=c.wsize-q):r=c.wnext-q,q>c.length&&(q=c.length),pa=c.window}else pa=f,r=h-c.offset,q=c.length;q>j&&(q=j),j-=q,c.length-=q;do f[h++]=pa[r++];while(--q);0===c.length&&(c.mode=da);break;case ia:if(0===j)break a;f[h++]=c.length,j--,c.mode=da;break;case ja:if(c.wrap){for(;n<32;){if(0===i)break a;i--,m|=e[g++]<<n,n+=8}if(p-=j,a.total_out+=p,c.total+=p,p&&(a.adler=c.check=c.flags?u(c.check,f,p,h-p):t(c.check,f,p,h-p)),p=j,(c.flags?m:d(m))!==c.check){a.msg="incorrect data check",c.mode=ma;break}m=0,n=0}c.mode=ka;case ka:if(c.wrap&&c.flags){for(;n<32;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}if(m!==(4294967295&c.total)){a.msg="incorrect length check",c.mode=ma;break}m=0,n=0}c.mode=la;case la:xa=E;break a;case ma:xa=H;break a;case na:return I;case oa:default:return G}return a.next_out=h,a.avail_out=j,a.next_in=g,a.avail_in=i,c.hold=m,c.bits=n,(c.wsize||p!==a.avail_out&&c.mode<ma&&(c.mode<ja||b!==A))&&l(a,a.output,a.next_out,p-a.avail_out)?(c.mode=na,I):(o-=a.avail_in,p-=a.avail_out,a.total_in+=o,a.total_out+=p,c.total+=p,c.wrap&&p&&(a.adler=c.check=c.flags?u(c.check,f,p,a.next_out-p):t(c.check,f,p,a.next_out-p)),a.data_type=c.bits+(c.last?64:0)+(c.mode===W?128:0)+(c.mode===ca||c.mode===Z?256:0),(0===o&&0===p||b===A)&&xa===D&&(xa=J),xa)}function n(a){if(!a||!a.state)return G;var b=a.state;return b.window&&(b.window=null),a.state=null,D}function o(a,b){var c;return a&&a.state?(c=a.state,0===(2&c.wrap)?G:(c.head=b,b.done=!1,D)):G}function p(a,b){var c,d,e,f=b.length;return a&&a.state?(c=a.state,0!==c.wrap&&c.mode!==V?G:c.mode===V&&(d=1,d=t(d,b,f,0),d!==c.check)?H:(e=l(a,b,f,f))?(c.mode=na,I):(c.havedict=1,D)):G}var q,r,s=a("../utils/common"),t=a("./adler32"),u=a("./crc32"),v=a("./inffast"),w=a("./inftrees"),x=0,y=1,z=2,A=4,B=5,C=6,D=0,E=1,F=2,G=-2,H=-3,I=-4,J=-5,K=8,L=1,M=2,N=3,O=4,P=5,Q=6,R=7,S=8,T=9,U=10,V=11,W=12,X=13,Y=14,Z=15,$=16,_=17,aa=18,ba=19,ca=20,da=21,ea=22,fa=23,ga=24,ha=25,ia=26,ja=27,ka=28,la=29,ma=30,na=31,oa=32,pa=852,qa=592,ra=15,sa=ra,ta=!0;c.inflateReset=g,c.inflateReset2=h,c.inflateResetKeep=f,c.inflateInit=j,c.inflateInit2=i,c.inflate=m,c.inflateEnd=n,c.inflateGetHeader=o,c.inflateSetDictionary=p,c.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":62,"./adler32":64,"./crc32":66,"./inffast":69,"./inftrees":71}],71:[function(a,b,c){"use strict";var d=a("../utils/common"),e=15,f=852,g=592,h=0,i=1,j=2,k=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],l=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],m=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],n=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];b.exports=function(a,b,c,o,p,q,r,s){var t,u,v,w,x,y,z,A,B,C=s.bits,D=0,E=0,F=0,G=0,H=0,I=0,J=0,K=0,L=0,M=0,N=null,O=0,P=new d.Buf16(e+1),Q=new d.Buf16(e+1),R=null,S=0;for(D=0;D<=e;D++)P[D]=0;for(E=0;E<o;E++)P[b[c+E]]++;for(H=C,G=e;G>=1&&0===P[G];G--);if(H>G&&(H=G),0===G)return p[q++]=20971520,p[q++]=20971520,s.bits=1,0;for(F=1;F<G&&0===P[F];F++);for(H<F&&(H=F),K=1,D=1;D<=e;D++)if(K<<=1,K-=P[D],K<0)return-1;if(K>0&&(a===h||1!==G))return-1;for(Q[1]=0,D=1;D<e;D++)Q[D+1]=Q[D]+P[D];for(E=0;E<o;E++)0!==b[c+E]&&(r[Q[b[c+E]]++]=E);if(a===h?(N=R=r,y=19):a===i?(N=k,O-=257,R=l,S-=257,y=256):(N=m,R=n,y=-1),M=0,E=0,D=F,x=q,I=H,J=0,v=-1,L=1<<H,w=L-1,a===i&&L>f||a===j&&L>g)return 1;for(var T=0;;){T++,z=D-J,r[E]<y?(A=0,B=r[E]):r[E]>y?(A=R[S+r[E]],B=N[O+r[E]]):(A=96,B=0),t=1<<D-J,u=1<<I,F=u;do u-=t,p[x+(M>>J)+u]=z<<24|A<<16|B|0;while(0!==u);for(t=1<<D-1;M&t;)t>>=1;if(0!==t?(M&=t-1,M+=t):M=0,E++,0===--P[D]){if(D===G)break;D=b[c+r[E]]}if(D>H&&(M&w)!==v){for(0===J&&(J=H),x+=F,I=D-J,K=1<<I;I+J<G&&(K-=P[I+J],!(K<=0));)I++,K<<=1;if(L+=1<<I,a===i&&L>f||a===j&&L>g)return 1;v=M&w,p[v]=H<<24|I<<16|x-q|0}}return 0!==M&&(p[x+M]=D-J<<24|64<<16|0),s.bits=H,0}},{"../utils/common":62}],72:[function(a,b,c){"use strict";b.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],73:[function(a,b,c){"use strict";function d(a){for(var b=a.length;--b>=0;)a[b]=0}function e(a,b,c,d,e){this.static_tree=a,this.extra_bits=b,this.extra_base=c,this.elems=d,this.max_length=e,this.has_stree=a&&a.length}function f(a,b){this.dyn_tree=a,this.max_code=0,this.stat_desc=b}function g(a){return a<256?ia[a]:ia[256+(a>>>7)]}function h(a,b){a.pending_buf[a.pending++]=255&b,a.pending_buf[a.pending++]=b>>>8&255}function i(a,b,c){a.bi_valid>X-c?(a.bi_buf|=b<<a.bi_valid&65535,h(a,a.bi_buf),a.bi_buf=b>>X-a.bi_valid,a.bi_valid+=c-X):(a.bi_buf|=b<<a.bi_valid&65535,a.bi_valid+=c)}function j(a,b,c){i(a,c[2*b],c[2*b+1])}function k(a,b){var c=0;do c|=1&a,a>>>=1,c<<=1;while(--b>0);return c>>>1}function l(a){16===a.bi_valid?(h(a,a.bi_buf),a.bi_buf=0,a.bi_valid=0):a.bi_valid>=8&&(a.pending_buf[a.pending++]=255&a.bi_buf,a.bi_buf>>=8,a.bi_valid-=8)}function m(a,b){var c,d,e,f,g,h,i=b.dyn_tree,j=b.max_code,k=b.stat_desc.static_tree,l=b.stat_desc.has_stree,m=b.stat_desc.extra_bits,n=b.stat_desc.extra_base,o=b.stat_desc.max_length,p=0;for(f=0;f<=W;f++)a.bl_count[f]=0;for(i[2*a.heap[a.heap_max]+1]=0,c=a.heap_max+1;c<V;c++)d=a.heap[c],f=i[2*i[2*d+1]+1]+1,f>o&&(f=o,p++),i[2*d+1]=f,d>j||(a.bl_count[f]++,g=0,d>=n&&(g=m[d-n]),h=i[2*d],a.opt_len+=h*(f+g),l&&(a.static_len+=h*(k[2*d+1]+g)));if(0!==p){do{for(f=o-1;0===a.bl_count[f];)f--;a.bl_count[f]--,a.bl_count[f+1]+=2,a.bl_count[o]--,p-=2}while(p>0);for(f=o;0!==f;f--)for(d=a.bl_count[f];0!==d;)e=a.heap[--c],e>j||(i[2*e+1]!==f&&(a.opt_len+=(f-i[2*e+1])*i[2*e],i[2*e+1]=f),d--)}}function n(a,b,c){var d,e,f=new Array(W+1),g=0;
for(d=1;d<=W;d++)f[d]=g=g+c[d-1]<<1;for(e=0;e<=b;e++){var h=a[2*e+1];0!==h&&(a[2*e]=k(f[h]++,h))}}function o(){var a,b,c,d,f,g=new Array(W+1);for(c=0,d=0;d<Q-1;d++)for(ka[d]=c,a=0;a<1<<ba[d];a++)ja[c++]=d;for(ja[c-1]=d,f=0,d=0;d<16;d++)for(la[d]=f,a=0;a<1<<ca[d];a++)ia[f++]=d;for(f>>=7;d<T;d++)for(la[d]=f<<7,a=0;a<1<<ca[d]-7;a++)ia[256+f++]=d;for(b=0;b<=W;b++)g[b]=0;for(a=0;a<=143;)ga[2*a+1]=8,a++,g[8]++;for(;a<=255;)ga[2*a+1]=9,a++,g[9]++;for(;a<=279;)ga[2*a+1]=7,a++,g[7]++;for(;a<=287;)ga[2*a+1]=8,a++,g[8]++;for(n(ga,S+1,g),a=0;a<T;a++)ha[2*a+1]=5,ha[2*a]=k(a,5);ma=new e(ga,ba,R+1,S,W),na=new e(ha,ca,0,T,W),oa=new e(new Array(0),da,0,U,Y)}function p(a){var b;for(b=0;b<S;b++)a.dyn_ltree[2*b]=0;for(b=0;b<T;b++)a.dyn_dtree[2*b]=0;for(b=0;b<U;b++)a.bl_tree[2*b]=0;a.dyn_ltree[2*Z]=1,a.opt_len=a.static_len=0,a.last_lit=a.matches=0}function q(a){a.bi_valid>8?h(a,a.bi_buf):a.bi_valid>0&&(a.pending_buf[a.pending++]=a.bi_buf),a.bi_buf=0,a.bi_valid=0}function r(a,b,c,d){q(a),d&&(h(a,c),h(a,~c)),G.arraySet(a.pending_buf,a.window,b,c,a.pending),a.pending+=c}function s(a,b,c,d){var e=2*b,f=2*c;return a[e]<a[f]||a[e]===a[f]&&d[b]<=d[c]}function t(a,b,c){for(var d=a.heap[c],e=c<<1;e<=a.heap_len&&(e<a.heap_len&&s(b,a.heap[e+1],a.heap[e],a.depth)&&e++,!s(b,d,a.heap[e],a.depth));)a.heap[c]=a.heap[e],c=e,e<<=1;a.heap[c]=d}function u(a,b,c){var d,e,f,h,k=0;if(0!==a.last_lit)do d=a.pending_buf[a.d_buf+2*k]<<8|a.pending_buf[a.d_buf+2*k+1],e=a.pending_buf[a.l_buf+k],k++,0===d?j(a,e,b):(f=ja[e],j(a,f+R+1,b),h=ba[f],0!==h&&(e-=ka[f],i(a,e,h)),d--,f=g(d),j(a,f,c),h=ca[f],0!==h&&(d-=la[f],i(a,d,h)));while(k<a.last_lit);j(a,Z,b)}function v(a,b){var c,d,e,f=b.dyn_tree,g=b.stat_desc.static_tree,h=b.stat_desc.has_stree,i=b.stat_desc.elems,j=-1;for(a.heap_len=0,a.heap_max=V,c=0;c<i;c++)0!==f[2*c]?(a.heap[++a.heap_len]=j=c,a.depth[c]=0):f[2*c+1]=0;for(;a.heap_len<2;)e=a.heap[++a.heap_len]=j<2?++j:0,f[2*e]=1,a.depth[e]=0,a.opt_len--,h&&(a.static_len-=g[2*e+1]);for(b.max_code=j,c=a.heap_len>>1;c>=1;c--)t(a,f,c);e=i;do c=a.heap[1],a.heap[1]=a.heap[a.heap_len--],t(a,f,1),d=a.heap[1],a.heap[--a.heap_max]=c,a.heap[--a.heap_max]=d,f[2*e]=f[2*c]+f[2*d],a.depth[e]=(a.depth[c]>=a.depth[d]?a.depth[c]:a.depth[d])+1,f[2*c+1]=f[2*d+1]=e,a.heap[1]=e++,t(a,f,1);while(a.heap_len>=2);a.heap[--a.heap_max]=a.heap[1],m(a,b),n(f,j,a.bl_count)}function w(a,b,c){var d,e,f=-1,g=b[1],h=0,i=7,j=4;for(0===g&&(i=138,j=3),b[2*(c+1)+1]=65535,d=0;d<=c;d++)e=g,g=b[2*(d+1)+1],++h<i&&e===g||(h<j?a.bl_tree[2*e]+=h:0!==e?(e!==f&&a.bl_tree[2*e]++,a.bl_tree[2*$]++):h<=10?a.bl_tree[2*_]++:a.bl_tree[2*aa]++,h=0,f=e,0===g?(i=138,j=3):e===g?(i=6,j=3):(i=7,j=4))}function x(a,b,c){var d,e,f=-1,g=b[1],h=0,k=7,l=4;for(0===g&&(k=138,l=3),d=0;d<=c;d++)if(e=g,g=b[2*(d+1)+1],!(++h<k&&e===g)){if(h<l){do j(a,e,a.bl_tree);while(0!==--h)}else 0!==e?(e!==f&&(j(a,e,a.bl_tree),h--),j(a,$,a.bl_tree),i(a,h-3,2)):h<=10?(j(a,_,a.bl_tree),i(a,h-3,3)):(j(a,aa,a.bl_tree),i(a,h-11,7));h=0,f=e,0===g?(k=138,l=3):e===g?(k=6,l=3):(k=7,l=4)}}function y(a){var b;for(w(a,a.dyn_ltree,a.l_desc.max_code),w(a,a.dyn_dtree,a.d_desc.max_code),v(a,a.bl_desc),b=U-1;b>=3&&0===a.bl_tree[2*ea[b]+1];b--);return a.opt_len+=3*(b+1)+5+5+4,b}function z(a,b,c,d){var e;for(i(a,b-257,5),i(a,c-1,5),i(a,d-4,4),e=0;e<d;e++)i(a,a.bl_tree[2*ea[e]+1],3);x(a,a.dyn_ltree,b-1),x(a,a.dyn_dtree,c-1)}function A(a){var b,c=4093624447;for(b=0;b<=31;b++,c>>>=1)if(1&c&&0!==a.dyn_ltree[2*b])return I;if(0!==a.dyn_ltree[18]||0!==a.dyn_ltree[20]||0!==a.dyn_ltree[26])return J;for(b=32;b<R;b++)if(0!==a.dyn_ltree[2*b])return J;return I}function B(a){pa||(o(),pa=!0),a.l_desc=new f(a.dyn_ltree,ma),a.d_desc=new f(a.dyn_dtree,na),a.bl_desc=new f(a.bl_tree,oa),a.bi_buf=0,a.bi_valid=0,p(a)}function C(a,b,c,d){i(a,(L<<1)+(d?1:0),3),r(a,b,c,!0)}function D(a){i(a,M<<1,3),j(a,Z,ga),l(a)}function E(a,b,c,d){var e,f,g=0;a.level>0?(a.strm.data_type===K&&(a.strm.data_type=A(a)),v(a,a.l_desc),v(a,a.d_desc),g=y(a),e=a.opt_len+3+7>>>3,f=a.static_len+3+7>>>3,f<=e&&(e=f)):e=f=c+5,c+4<=e&&b!==-1?C(a,b,c,d):a.strategy===H||f===e?(i(a,(M<<1)+(d?1:0),3),u(a,ga,ha)):(i(a,(N<<1)+(d?1:0),3),z(a,a.l_desc.max_code+1,a.d_desc.max_code+1,g+1),u(a,a.dyn_ltree,a.dyn_dtree)),p(a),d&&q(a)}function F(a,b,c){return a.pending_buf[a.d_buf+2*a.last_lit]=b>>>8&255,a.pending_buf[a.d_buf+2*a.last_lit+1]=255&b,a.pending_buf[a.l_buf+a.last_lit]=255&c,a.last_lit++,0===b?a.dyn_ltree[2*c]++:(a.matches++,b--,a.dyn_ltree[2*(ja[c]+R+1)]++,a.dyn_dtree[2*g(b)]++),a.last_lit===a.lit_bufsize-1}var G=a("../utils/common"),H=4,I=0,J=1,K=2,L=0,M=1,N=2,O=3,P=258,Q=29,R=256,S=R+1+Q,T=30,U=19,V=2*S+1,W=15,X=16,Y=7,Z=256,$=16,_=17,aa=18,ba=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],ca=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],da=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],ea=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],fa=512,ga=new Array(2*(S+2));d(ga);var ha=new Array(2*T);d(ha);var ia=new Array(fa);d(ia);var ja=new Array(P-O+1);d(ja);var ka=new Array(Q);d(ka);var la=new Array(T);d(la);var ma,na,oa,pa=!1;c._tr_init=B,c._tr_stored_block=C,c._tr_flush_block=E,c._tr_tally=F,c._tr_align=D},{"../utils/common":62}],74:[function(a,b,c){"use strict";function d(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}b.exports=d},{}]},{},[10])(10)});
/* --------------------------------------------------------------
         js/libs/codemirror/codemirror.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/5/LICENSE

// This is CodeMirror (https://codemirror.net/5), a code editor
// implemented in JavaScript on top of the browser's DOM.
//
// You can find some technical background for some of the code below
// at http://marijnhaverbeke.nl/blog/#cm-internals .

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = global || self, global.CodeMirror = factory());
}(this, (function () { 'use strict';

  // Kludges for bugs and behavior differences that can't be feature
  // detected are enabled based on userAgent etc sniffing.
  var userAgent = navigator.userAgent;
  var platform = navigator.platform;

  var gecko = /gecko\/\d/i.test(userAgent);
  var ie_upto10 = /MSIE \d/.test(userAgent);
  var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(userAgent);
  var edge = /Edge\/(\d+)/.exec(userAgent);
  var ie = ie_upto10 || ie_11up || edge;
  var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1]);
  var webkit = !edge && /WebKit\//.test(userAgent);
  var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent);
  var chrome = !edge && /Chrome\/(\d+)/.exec(userAgent);
  var chrome_version = chrome && +chrome[1];
  var presto = /Opera\//.test(userAgent);
  var safari = /Apple Computer/.test(navigator.vendor);
  var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(userAgent);
  var phantom = /PhantomJS/.test(userAgent);

  var ios = safari && (/Mobile\/\w+/.test(userAgent) || navigator.maxTouchPoints > 2);
  var android = /Android/.test(userAgent);
  // This is woefully incomplete. Suggestions for alternative methods welcome.
  var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent);
  var mac = ios || /Mac/.test(platform);
  var chromeOS = /\bCrOS\b/.test(userAgent);
  var windows = /win/i.test(platform);

  var presto_version = presto && userAgent.match(/Version\/(\d*\.\d*)/);
  if (presto_version) { presto_version = Number(presto_version[1]); }
  if (presto_version && presto_version >= 15) { presto = false; webkit = true; }
  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
  var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
  var captureRightClick = gecko || (ie && ie_version >= 9);

  function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") }

  var rmClass = function(node, cls) {
    var current = node.className;
    var match = classTest(cls).exec(current);
    if (match) {
      var after = current.slice(match.index + match[0].length);
      node.className = current.slice(0, match.index) + (after ? match[1] + after : "");
    }
  };

  function removeChildren(e) {
    for (var count = e.childNodes.length; count > 0; --count)
      { e.removeChild(e.firstChild); }
    return e
  }

  function removeChildrenAndAdd(parent, e) {
    return removeChildren(parent).appendChild(e)
  }

  function elt(tag, content, className, style) {
    var e = document.createElement(tag);
    if (className) { e.className = className; }
    if (style) { e.style.cssText = style; }
    if (typeof content == "string") { e.appendChild(document.createTextNode(content)); }
    else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]); } }
    return e
  }
  // wrapper for elt, which removes the elt from the accessibility tree
  function eltP(tag, content, className, style) {
    var e = elt(tag, content, className, style);
    e.setAttribute("role", "presentation");
    return e
  }

  var range;
  if (document.createRange) { range = function(node, start, end, endNode) {
    var r = document.createRange();
    r.setEnd(endNode || node, end);
    r.setStart(node, start);
    return r
  }; }
  else { range = function(node, start, end) {
    var r = document.body.createTextRange();
    try { r.moveToElementText(node.parentNode); }
    catch(e) { return r }
    r.collapse(true);
    r.moveEnd("character", end);
    r.moveStart("character", start);
    return r
  }; }

  function contains(parent, child) {
    if (child.nodeType == 3) // Android browser always returns false when child is a textnode
      { child = child.parentNode; }
    if (parent.contains)
      { return parent.contains(child) }
    do {
      if (child.nodeType == 11) { child = child.host; }
      if (child == parent) { return true }
    } while (child = child.parentNode)
  }

  function activeElt(rootNode) {
    // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement.
    // IE < 10 will throw when accessed while the page is loading or in an iframe.
    // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable.
    var doc = rootNode.ownerDocument || rootNode;
    var activeElement;
    try {
      activeElement = rootNode.activeElement;
    } catch(e) {
      activeElement = doc.body || null;
    }
    while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement)
      { activeElement = activeElement.shadowRoot.activeElement; }
    return activeElement
  }

  function addClass(node, cls) {
    var current = node.className;
    if (!classTest(cls).test(current)) { node.className += (current ? " " : "") + cls; }
  }
  function joinClasses(a, b) {
    var as = a.split(" ");
    for (var i = 0; i < as.length; i++)
      { if (as[i] && !classTest(as[i]).test(b)) { b += " " + as[i]; } }
    return b
  }

  var selectInput = function(node) { node.select(); };
  if (ios) // Mobile Safari apparently has a bug where select() is broken.
    { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; }; }
  else if (ie) // Suppress mysterious IE10 errors
    { selectInput = function(node) { try { node.select(); } catch(_e) {} }; }

  function doc(cm) { return cm.display.wrapper.ownerDocument }

  function root(cm) {
    return rootNode(cm.display.wrapper)
  }

  function rootNode(element) {
    // Detect modern browsers (2017+).
    return element.getRootNode ? element.getRootNode() : element.ownerDocument
  }

  function win(cm) { return doc(cm).defaultView }

  function bind(f) {
    var args = Array.prototype.slice.call(arguments, 1);
    return function(){return f.apply(null, args)}
  }

  function copyObj(obj, target, overwrite) {
    if (!target) { target = {}; }
    for (var prop in obj)
      { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
        { target[prop] = obj[prop]; } }
    return target
  }

  // Counts the column offset in a string, taking tabs into account.
  // Used mostly to find indentation.
  function countColumn(string, end, tabSize, startIndex, startValue) {
    if (end == null) {
      end = string.search(/[^\s\u00a0]/);
      if (end == -1) { end = string.length; }
    }
    for (var i = startIndex || 0, n = startValue || 0;;) {
      var nextTab = string.indexOf("\t", i);
      if (nextTab < 0 || nextTab >= end)
        { return n + (end - i) }
      n += nextTab - i;
      n += tabSize - (n % tabSize);
      i = nextTab + 1;
    }
  }

  var Delayed = function() {
    this.id = null;
    this.f = null;
    this.time = 0;
    this.handler = bind(this.onTimeout, this);
  };
  Delayed.prototype.onTimeout = function (self) {
    self.id = 0;
    if (self.time <= +new Date) {
      self.f();
    } else {
      setTimeout(self.handler, self.time - +new Date);
    }
  };
  Delayed.prototype.set = function (ms, f) {
    this.f = f;
    var time = +new Date + ms;
    if (!this.id || time < this.time) {
      clearTimeout(this.id);
      this.id = setTimeout(this.handler, ms);
      this.time = time;
    }
  };

  function indexOf(array, elt) {
    for (var i = 0; i < array.length; ++i)
      { if (array[i] == elt) { return i } }
    return -1
  }

  // Number of pixels added to scroller and sizer to hide scrollbar
  var scrollerGap = 50;

  // Returned or thrown by various protocols to signal 'I'm not
  // handling this'.
  var Pass = {toString: function(){return "CodeMirror.Pass"}};

  // Reused option objects for setSelection & friends
  var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"};

  // The inverse of countColumn -- find the offset that corresponds to
  // a particular column.
  function findColumn(string, goal, tabSize) {
    for (var pos = 0, col = 0;;) {
      var nextTab = string.indexOf("\t", pos);
      if (nextTab == -1) { nextTab = string.length; }
      var skipped = nextTab - pos;
      if (nextTab == string.length || col + skipped >= goal)
        { return pos + Math.min(skipped, goal - col) }
      col += nextTab - pos;
      col += tabSize - (col % tabSize);
      pos = nextTab + 1;
      if (col >= goal) { return pos }
    }
  }

  var spaceStrs = [""];
  function spaceStr(n) {
    while (spaceStrs.length <= n)
      { spaceStrs.push(lst(spaceStrs) + " "); }
    return spaceStrs[n]
  }

  function lst(arr) { return arr[arr.length-1] }

  function map(array, f) {
    var out = [];
    for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i); }
    return out
  }

  function insertSorted(array, value, score) {
    var pos = 0, priority = score(value);
    while (pos < array.length && score(array[pos]) <= priority) { pos++; }
    array.splice(pos, 0, value);
  }

  function nothing() {}

  function createObj(base, props) {
    var inst;
    if (Object.create) {
      inst = Object.create(base);
    } else {
      nothing.prototype = base;
      inst = new nothing();
    }
    if (props) { copyObj(props, inst); }
    return inst
  }

  var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
  function isWordCharBasic(ch) {
    return /\w/.test(ch) || ch > "\x80" &&
      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch))
  }
  function isWordChar(ch, helper) {
    if (!helper) { return isWordCharBasic(ch) }
    if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) { return true }
    return helper.test(ch)
  }

  function isEmpty(obj) {
    for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } }
    return true
  }

  // Extending unicode characters. A series of a non-extending char +
  // any number of extending chars is treated as a single unit as far
  // as editing and measuring is concerned. This is not fully correct,
  // since some scripts/fonts/browsers also treat other configurations
  // of code points as a group.
  var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
  function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) }

  // Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range.
  function skipExtendingChars(str, pos, dir) {
    while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir; }
    return pos
  }

  // Returns the value from the range [`from`; `to`] that satisfies
  // `pred` and is closest to `from`. Assumes that at least `to`
  // satisfies `pred`. Supports `from` being greater than `to`.
  function findFirst(pred, from, to) {
    // At any point we are certain `to` satisfies `pred`, don't know
    // whether `from` does.
    var dir = from > to ? -1 : 1;
    for (;;) {
      if (from == to) { return from }
      var midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF);
      if (mid == from) { return pred(mid) ? from : to }
      if (pred(mid)) { to = mid; }
      else { from = mid + dir; }
    }
  }

  // BIDI HELPERS

  function iterateBidiSections(order, from, to, f) {
    if (!order) { return f(from, to, "ltr", 0) }
    var found = false;
    for (var i = 0; i < order.length; ++i) {
      var part = order[i];
      if (part.from < to && part.to > from || from == to && part.to == from) {
        f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr", i);
        found = true;
      }
    }
    if (!found) { f(from, to, "ltr"); }
  }

  var bidiOther = null;
  function getBidiPartAt(order, ch, sticky) {
    var found;
    bidiOther = null;
    for (var i = 0; i < order.length; ++i) {
      var cur = order[i];
      if (cur.from < ch && cur.to > ch) { return i }
      if (cur.to == ch) {
        if (cur.from != cur.to && sticky == "before") { found = i; }
        else { bidiOther = i; }
      }
      if (cur.from == ch) {
        if (cur.from != cur.to && sticky != "before") { found = i; }
        else { bidiOther = i; }
      }
    }
    return found != null ? found : bidiOther
  }

  // Bidirectional ordering algorithm
  // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
  // that this (partially) implements.

  // One-char codes used for character types:
  // L (L):   Left-to-Right
  // R (R):   Right-to-Left
  // r (AL):  Right-to-Left Arabic
  // 1 (EN):  European Number
  // + (ES):  European Number Separator
  // % (ET):  European Number Terminator
  // n (AN):  Arabic Number
  // , (CS):  Common Number Separator
  // m (NSM): Non-Spacing Mark
  // b (BN):  Boundary Neutral
  // s (B):   Paragraph Separator
  // t (S):   Segment Separator
  // w (WS):  Whitespace
  // N (ON):  Other Neutrals

  // Returns null if characters are ordered as they appear
  // (left-to-right), or an array of sections ({from, to, level}
  // objects) in the order in which they occur visually.
  var bidiOrdering = (function() {
    // Character types for codepoints 0 to 0xff
    var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
    // Character types for codepoints 0x600 to 0x6f9
    var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111";
    function charType(code) {
      if (code <= 0xf7) { return lowTypes.charAt(code) }
      else if (0x590 <= code && code <= 0x5f4) { return "R" }
      else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) }
      else if (0x6ee <= code && code <= 0x8ac) { return "r" }
      else if (0x2000 <= code && code <= 0x200b) { return "w" }
      else if (code == 0x200c) { return "b" }
      else { return "L" }
    }

    var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
    var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;

    function BidiSpan(level, from, to) {
      this.level = level;
      this.from = from; this.to = to;
    }

    return function(str, direction) {
      var outerType = direction == "ltr" ? "L" : "R";

      if (str.length == 0 || direction == "ltr" && !bidiRE.test(str)) { return false }
      var len = str.length, types = [];
      for (var i = 0; i < len; ++i)
        { types.push(charType(str.charCodeAt(i))); }

      // W1. Examine each non-spacing mark (NSM) in the level run, and
      // change the type of the NSM to the type of the previous
      // character. If the NSM is at the start of the level run, it will
      // get the type of sor.
      for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) {
        var type = types[i$1];
        if (type == "m") { types[i$1] = prev; }
        else { prev = type; }
      }

      // W2. Search backwards from each instance of a European number
      // until the first strong type (R, L, AL, or sor) is found. If an
      // AL is found, change the type of the European number to Arabic
      // number.
      // W3. Change all ALs to R.
      for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) {
        var type$1 = types[i$2];
        if (type$1 == "1" && cur == "r") { types[i$2] = "n"; }
        else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == "r") { types[i$2] = "R"; } }
      }

      // W4. A single European separator between two European numbers
      // changes to a European number. A single common separator between
      // two numbers of the same type changes to that type.
      for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) {
        var type$2 = types[i$3];
        if (type$2 == "+" && prev$1 == "1" && types[i$3+1] == "1") { types[i$3] = "1"; }
        else if (type$2 == "," && prev$1 == types[i$3+1] &&
                 (prev$1 == "1" || prev$1 == "n")) { types[i$3] = prev$1; }
        prev$1 = type$2;
      }

      // W5. A sequence of European terminators adjacent to European
      // numbers changes to all European numbers.
      // W6. Otherwise, separators and terminators change to Other
      // Neutral.
      for (var i$4 = 0; i$4 < len; ++i$4) {
        var type$3 = types[i$4];
        if (type$3 == ",") { types[i$4] = "N"; }
        else if (type$3 == "%") {
          var end = (void 0);
          for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {}
          var replace = (i$4 && types[i$4-1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
          for (var j = i$4; j < end; ++j) { types[j] = replace; }
          i$4 = end - 1;
        }
      }

      // W7. Search backwards from each instance of a European number
      // until the first strong type (R, L, or sor) is found. If an L is
      // found, then change the type of the European number to L.
      for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) {
        var type$4 = types[i$5];
        if (cur$1 == "L" && type$4 == "1") { types[i$5] = "L"; }
        else if (isStrong.test(type$4)) { cur$1 = type$4; }
      }

      // N1. A sequence of neutrals takes the direction of the
      // surrounding strong text if the text on both sides has the same
      // direction. European and Arabic numbers act as if they were R in
      // terms of their influence on neutrals. Start-of-level-run (sor)
      // and end-of-level-run (eor) are used at level run boundaries.
      // N2. Any remaining neutrals take the embedding direction.
      for (var i$6 = 0; i$6 < len; ++i$6) {
        if (isNeutral.test(types[i$6])) {
          var end$1 = (void 0);
          for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {}
          var before = (i$6 ? types[i$6-1] : outerType) == "L";
          var after = (end$1 < len ? types[end$1] : outerType) == "L";
          var replace$1 = before == after ? (before ? "L" : "R") : outerType;
          for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1; }
          i$6 = end$1 - 1;
        }
      }

      // Here we depart from the documented algorithm, in order to avoid
      // building up an actual levels array. Since there are only three
      // levels (0, 1, 2) in an implementation that doesn't take
      // explicit embedding into account, we can build up the order on
      // the fly, without following the level-based algorithm.
      var order = [], m;
      for (var i$7 = 0; i$7 < len;) {
        if (countsAsLeft.test(types[i$7])) {
          var start = i$7;
          for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {}
          order.push(new BidiSpan(0, start, i$7));
        } else {
          var pos = i$7, at = order.length, isRTL = direction == "rtl" ? 1 : 0;
          for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {}
          for (var j$2 = pos; j$2 < i$7;) {
            if (countsAsNum.test(types[j$2])) {
              if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)); at += isRTL; }
              var nstart = j$2;
              for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {}
              order.splice(at, 0, new BidiSpan(2, nstart, j$2));
              at += isRTL;
              pos = j$2;
            } else { ++j$2; }
          }
          if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)); }
        }
      }
      if (direction == "ltr") {
        if (order[0].level == 1 && (m = str.match(/^\s+/))) {
          order[0].from = m[0].length;
          order.unshift(new BidiSpan(0, 0, m[0].length));
        }
        if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
          lst(order).to -= m[0].length;
          order.push(new BidiSpan(0, len - m[0].length, len));
        }
      }

      return direction == "rtl" ? order.reverse() : order
    }
  })();

  // Get the bidi ordering for the given line (and cache it). Returns
  // false for lines that are fully left-to-right, and an array of
  // BidiSpan objects otherwise.
  function getOrder(line, direction) {
    var order = line.order;
    if (order == null) { order = line.order = bidiOrdering(line.text, direction); }
    return order
  }

  // EVENT HANDLING

  // Lightweight event framework. on/off also work on DOM nodes,
  // registering native DOM handlers.

  var noHandlers = [];

  var on = function(emitter, type, f) {
    if (emitter.addEventListener) {
      emitter.addEventListener(type, f, false);
    } else if (emitter.attachEvent) {
      emitter.attachEvent("on" + type, f);
    } else {
      var map = emitter._handlers || (emitter._handlers = {});
      map[type] = (map[type] || noHandlers).concat(f);
    }
  };

  function getHandlers(emitter, type) {
    return emitter._handlers && emitter._handlers[type] || noHandlers
  }

  function off(emitter, type, f) {
    if (emitter.removeEventListener) {
      emitter.removeEventListener(type, f, false);
    } else if (emitter.detachEvent) {
      emitter.detachEvent("on" + type, f);
    } else {
      var map = emitter._handlers, arr = map && map[type];
      if (arr) {
        var index = indexOf(arr, f);
        if (index > -1)
          { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)); }
      }
    }
  }

  function signal(emitter, type /*, values...*/) {
    var handlers = getHandlers(emitter, type);
    if (!handlers.length) { return }
    var args = Array.prototype.slice.call(arguments, 2);
    for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args); }
  }

  // The DOM events that CodeMirror handles can be overridden by
  // registering a (non-DOM) handler on the editor for the event name,
  // and preventDefault-ing the event in that handler.
  function signalDOMEvent(cm, e, override) {
    if (typeof e == "string")
      { e = {type: e, preventDefault: function() { this.defaultPrevented = true; }}; }
    signal(cm, override || e.type, cm, e);
    return e_defaultPrevented(e) || e.codemirrorIgnore
  }

  function signalCursorActivity(cm) {
    var arr = cm._handlers && cm._handlers.cursorActivity;
    if (!arr) { return }
    var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);
    for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1)
      { set.push(arr[i]); } }
  }

  function hasHandler(emitter, type) {
    return getHandlers(emitter, type).length > 0
  }

  // Add on and off methods to a constructor's prototype, to make
  // registering events on such objects more convenient.
  function eventMixin(ctor) {
    ctor.prototype.on = function(type, f) {on(this, type, f);};
    ctor.prototype.off = function(type, f) {off(this, type, f);};
  }

  // Due to the fact that we still support jurassic IE versions, some
  // compatibility wrappers are needed.

  function e_preventDefault(e) {
    if (e.preventDefault) { e.preventDefault(); }
    else { e.returnValue = false; }
  }
  function e_stopPropagation(e) {
    if (e.stopPropagation) { e.stopPropagation(); }
    else { e.cancelBubble = true; }
  }
  function e_defaultPrevented(e) {
    return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false
  }
  function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}

  function e_target(e) {return e.target || e.srcElement}
  function e_button(e) {
    var b = e.which;
    if (b == null) {
      if (e.button & 1) { b = 1; }
      else if (e.button & 2) { b = 3; }
      else if (e.button & 4) { b = 2; }
    }
    if (mac && e.ctrlKey && b == 1) { b = 3; }
    return b
  }

  // Detect drag-and-drop
  var dragAndDrop = function() {
    // There is *some* kind of drag-and-drop support in IE6-8, but I
    // couldn't get it to work yet.
    if (ie && ie_version < 9) { return false }
    var div = elt('div');
    return "draggable" in div || "dragDrop" in div
  }();

  var zwspSupported;
  function zeroWidthElement(measure) {
    if (zwspSupported == null) {
      var test = elt("span", "\u200b");
      removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
      if (measure.firstChild.offsetHeight != 0)
        { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8); }
    }
    var node = zwspSupported ? elt("span", "\u200b") :
      elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
    node.setAttribute("cm-text", "");
    return node
  }

  // Feature-detect IE's crummy client rect reporting for bidi text
  var badBidiRects;
  function hasBadBidiRects(measure) {
    if (badBidiRects != null) { return badBidiRects }
    var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
    var r0 = range(txt, 0, 1).getBoundingClientRect();
    var r1 = range(txt, 1, 2).getBoundingClientRect();
    removeChildren(measure);
    if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780)
    return badBidiRects = (r1.right - r0.right < 3)
  }

  // See if "".split is the broken IE version, if so, provide an
  // alternative way to split lines.
  var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) {
    var pos = 0, result = [], l = string.length;
    while (pos <= l) {
      var nl = string.indexOf("\n", pos);
      if (nl == -1) { nl = string.length; }
      var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
      var rt = line.indexOf("\r");
      if (rt != -1) {
        result.push(line.slice(0, rt));
        pos += rt + 1;
      } else {
        result.push(line);
        pos = nl + 1;
      }
    }
    return result
  } : function (string) { return string.split(/\r\n?|\n/); };

  var hasSelection = window.getSelection ? function (te) {
    try { return te.selectionStart != te.selectionEnd }
    catch(e) { return false }
  } : function (te) {
    var range;
    try {range = te.ownerDocument.selection.createRange();}
    catch(e) {}
    if (!range || range.parentElement() != te) { return false }
    return range.compareEndPoints("StartToEnd", range) != 0
  };

  var hasCopyEvent = (function () {
    var e = elt("div");
    if ("oncopy" in e) { return true }
    e.setAttribute("oncopy", "return;");
    return typeof e.oncopy == "function"
  })();

  var badZoomedRects = null;
  function hasBadZoomedRects(measure) {
    if (badZoomedRects != null) { return badZoomedRects }
    var node = removeChildrenAndAdd(measure, elt("span", "x"));
    var normal = node.getBoundingClientRect();
    var fromRange = range(node, 0, 1).getBoundingClientRect();
    return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1
  }

  // Known modes, by name and by MIME
  var modes = {}, mimeModes = {};

  // Extra arguments are stored as the mode's dependencies, which is
  // used by (legacy) mechanisms like loadmode.js to automatically
  // load a mode. (Preferred mechanism is the require/define calls.)
  function defineMode(name, mode) {
    if (arguments.length > 2)
      { mode.dependencies = Array.prototype.slice.call(arguments, 2); }
    modes[name] = mode;
  }

  function defineMIME(mime, spec) {
    mimeModes[mime] = spec;
  }

  // Given a MIME type, a {name, ...options} config object, or a name
  // string, return a mode config object.
  function resolveMode(spec) {
    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
      spec = mimeModes[spec];
    } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
      var found = mimeModes[spec.name];
      if (typeof found == "string") { found = {name: found}; }
      spec = createObj(found, spec);
      spec.name = found.name;
    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
      return resolveMode("application/xml")
    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) {
      return resolveMode("application/json")
    }
    if (typeof spec == "string") { return {name: spec} }
    else { return spec || {name: "null"} }
  }

  // Given a mode spec (anything that resolveMode accepts), find and
  // initialize an actual mode object.
  function getMode(options, spec) {
    spec = resolveMode(spec);
    var mfactory = modes[spec.name];
    if (!mfactory) { return getMode(options, "text/plain") }
    var modeObj = mfactory(options, spec);
    if (modeExtensions.hasOwnProperty(spec.name)) {
      var exts = modeExtensions[spec.name];
      for (var prop in exts) {
        if (!exts.hasOwnProperty(prop)) { continue }
        if (modeObj.hasOwnProperty(prop)) { modeObj["_" + prop] = modeObj[prop]; }
        modeObj[prop] = exts[prop];
      }
    }
    modeObj.name = spec.name;
    if (spec.helperType) { modeObj.helperType = spec.helperType; }
    if (spec.modeProps) { for (var prop$1 in spec.modeProps)
      { modeObj[prop$1] = spec.modeProps[prop$1]; } }

    return modeObj
  }

  // This can be used to attach properties to mode objects from
  // outside the actual mode definition.
  var modeExtensions = {};
  function extendMode(mode, properties) {
    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
    copyObj(properties, exts);
  }

  function copyState(mode, state) {
    if (state === true) { return state }
    if (mode.copyState) { return mode.copyState(state) }
    var nstate = {};
    for (var n in state) {
      var val = state[n];
      if (val instanceof Array) { val = val.concat([]); }
      nstate[n] = val;
    }
    return nstate
  }

  // Given a mode and a state (for that mode), find the inner mode and
  // state at the position that the state refers to.
  function innerMode(mode, state) {
    var info;
    while (mode.innerMode) {
      info = mode.innerMode(state);
      if (!info || info.mode == mode) { break }
      state = info.state;
      mode = info.mode;
    }
    return info || {mode: mode, state: state}
  }

  function startState(mode, a1, a2) {
    return mode.startState ? mode.startState(a1, a2) : true
  }

  // STRING STREAM

  // Fed to the mode parsers, provides helper functions to make
  // parsers more succinct.

  var StringStream = function(string, tabSize, lineOracle) {
    this.pos = this.start = 0;
    this.string = string;
    this.tabSize = tabSize || 8;
    this.lastColumnPos = this.lastColumnValue = 0;
    this.lineStart = 0;
    this.lineOracle = lineOracle;
  };

  StringStream.prototype.eol = function () {return this.pos >= this.string.length};
  StringStream.prototype.sol = function () {return this.pos == this.lineStart};
  StringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined};
  StringStream.prototype.next = function () {
    if (this.pos < this.string.length)
      { return this.string.charAt(this.pos++) }
  };
  StringStream.prototype.eat = function (match) {
    var ch = this.string.charAt(this.pos);
    var ok;
    if (typeof match == "string") { ok = ch == match; }
    else { ok = ch && (match.test ? match.test(ch) : match(ch)); }
    if (ok) {++this.pos; return ch}
  };
  StringStream.prototype.eatWhile = function (match) {
    var start = this.pos;
    while (this.eat(match)){}
    return this.pos > start
  };
  StringStream.prototype.eatSpace = function () {
    var start = this.pos;
    while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this.pos; }
    return this.pos > start
  };
  StringStream.prototype.skipToEnd = function () {this.pos = this.string.length;};
  StringStream.prototype.skipTo = function (ch) {
    var found = this.string.indexOf(ch, this.pos);
    if (found > -1) {this.pos = found; return true}
  };
  StringStream.prototype.backUp = function (n) {this.pos -= n;};
  StringStream.prototype.column = function () {
    if (this.lastColumnPos < this.start) {
      this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
      this.lastColumnPos = this.start;
    }
    return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
  };
  StringStream.prototype.indentation = function () {
    return countColumn(this.string, null, this.tabSize) -
      (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
  };
  StringStream.prototype.match = function (pattern, consume, caseInsensitive) {
    if (typeof pattern == "string") {
      var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; };
      var substr = this.string.substr(this.pos, pattern.length);
      if (cased(substr) == cased(pattern)) {
        if (consume !== false) { this.pos += pattern.length; }
        return true
      }
    } else {
      var match = this.string.slice(this.pos).match(pattern);
      if (match && match.index > 0) { return null }
      if (match && consume !== false) { this.pos += match[0].length; }
      return match
    }
  };
  StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)};
  StringStream.prototype.hideFirstChars = function (n, inner) {
    this.lineStart += n;
    try { return inner() }
    finally { this.lineStart -= n; }
  };
  StringStream.prototype.lookAhead = function (n) {
    var oracle = this.lineOracle;
    return oracle && oracle.lookAhead(n)
  };
  StringStream.prototype.baseToken = function () {
    var oracle = this.lineOracle;
    return oracle && oracle.baseToken(this.pos)
  };

  // Find the line object corresponding to the given line number.
  function getLine(doc, n) {
    n -= doc.first;
    if (n < 0 || n >= doc.size) { throw new Error("There is no line " + (n + doc.first) + " in the document.") }
    var chunk = doc;
    while (!chunk.lines) {
      for (var i = 0;; ++i) {
        var child = chunk.children[i], sz = child.chunkSize();
        if (n < sz) { chunk = child; break }
        n -= sz;
      }
    }
    return chunk.lines[n]
  }

  // Get the part of a document between two positions, as an array of
  // strings.
  function getBetween(doc, start, end) {
    var out = [], n = start.line;
    doc.iter(start.line, end.line + 1, function (line) {
      var text = line.text;
      if (n == end.line) { text = text.slice(0, end.ch); }
      if (n == start.line) { text = text.slice(start.ch); }
      out.push(text);
      ++n;
    });
    return out
  }
  // Get the lines between from and to, as array of strings.
  function getLines(doc, from, to) {
    var out = [];
    doc.iter(from, to, function (line) { out.push(line.text); }); // iter aborts when callback returns truthy value
    return out
  }

  // Update the height of a line, propagating the height change
  // upwards to parent nodes.
  function updateLineHeight(line, height) {
    var diff = height - line.height;
    if (diff) { for (var n = line; n; n = n.parent) { n.height += diff; } }
  }

  // Given a line object, find its line number by walking up through
  // its parent links.
  function lineNo(line) {
    if (line.parent == null) { return null }
    var cur = line.parent, no = indexOf(cur.lines, line);
    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
      for (var i = 0;; ++i) {
        if (chunk.children[i] == cur) { break }
        no += chunk.children[i].chunkSize();
      }
    }
    return no + cur.first
  }

  // Find the line at the given vertical position, using the height
  // information in the document tree.
  function lineAtHeight(chunk, h) {
    var n = chunk.first;
    outer: do {
      for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) {
        var child = chunk.children[i$1], ch = child.height;
        if (h < ch) { chunk = child; continue outer }
        h -= ch;
        n += child.chunkSize();
      }
      return n
    } while (!chunk.lines)
    var i = 0;
    for (; i < chunk.lines.length; ++i) {
      var line = chunk.lines[i], lh = line.height;
      if (h < lh) { break }
      h -= lh;
    }
    return n + i
  }

  function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size}

  function lineNumberFor(options, i) {
    return String(options.lineNumberFormatter(i + options.firstLineNumber))
  }

  // A Pos instance represents a position within the text.
  function Pos(line, ch, sticky) {
    if ( sticky === void 0 ) sticky = null;

    if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) }
    this.line = line;
    this.ch = ch;
    this.sticky = sticky;
  }

  // Compare two positions, return 0 if they are the same, a negative
  // number when a is less, and a positive number otherwise.
  function cmp(a, b) { return a.line - b.line || a.ch - b.ch }

  function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 }

  function copyPos(x) {return Pos(x.line, x.ch)}
  function maxPos(a, b) { return cmp(a, b) < 0 ? b : a }
  function minPos(a, b) { return cmp(a, b) < 0 ? a : b }

  // Most of the external API clips given positions to make sure they
  // actually exist within the document.
  function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))}
  function clipPos(doc, pos) {
    if (pos.line < doc.first) { return Pos(doc.first, 0) }
    var last = doc.first + doc.size - 1;
    if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) }
    return clipToLen(pos, getLine(doc, pos.line).text.length)
  }
  function clipToLen(pos, linelen) {
    var ch = pos.ch;
    if (ch == null || ch > linelen) { return Pos(pos.line, linelen) }
    else if (ch < 0) { return Pos(pos.line, 0) }
    else { return pos }
  }
  function clipPosArray(doc, array) {
    var out = [];
    for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]); }
    return out
  }

  var SavedContext = function(state, lookAhead) {
    this.state = state;
    this.lookAhead = lookAhead;
  };

  var Context = function(doc, state, line, lookAhead) {
    this.state = state;
    this.doc = doc;
    this.line = line;
    this.maxLookAhead = lookAhead || 0;
    this.baseTokens = null;
    this.baseTokenPos = 1;
  };

  Context.prototype.lookAhead = function (n) {
    var line = this.doc.getLine(this.line + n);
    if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n; }
    return line
  };

  Context.prototype.baseToken = function (n) {
    if (!this.baseTokens) { return null }
    while (this.baseTokens[this.baseTokenPos] <= n)
      { this.baseTokenPos += 2; }
    var type = this.baseTokens[this.baseTokenPos + 1];
    return {type: type && type.replace(/( |^)overlay .*/, ""),
            size: this.baseTokens[this.baseTokenPos] - n}
  };

  Context.prototype.nextLine = function () {
    this.line++;
    if (this.maxLookAhead > 0) { this.maxLookAhead--; }
  };

  Context.fromSaved = function (doc, saved, line) {
    if (saved instanceof SavedContext)
      { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) }
    else
      { return new Context(doc, copyState(doc.mode, saved), line) }
  };

  Context.prototype.save = function (copy) {
    var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state;
    return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state
  };


  // Compute a style array (an array starting with a mode generation
  // -- for invalidation -- followed by pairs of end positions and
  // style strings), which is used to highlight the tokens on the
  // line.
  function highlightLine(cm, line, context, forceToEnd) {
    // A styles array always starts with a number identifying the
    // mode/overlays that it is based on (for easy invalidation).
    var st = [cm.state.modeGen], lineClasses = {};
    // Compute the base array of styles
    runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); },
            lineClasses, forceToEnd);
    var state = context.state;

    // Run overlays, adjust style array.
    var loop = function ( o ) {
      context.baseTokens = st;
      var overlay = cm.state.overlays[o], i = 1, at = 0;
      context.state = true;
      runMode(cm, line.text, overlay.mode, context, function (end, style) {
        var start = i;
        // Ensure there's a token end at the current position, and that i points at it
        while (at < end) {
          var i_end = st[i];
          if (i_end > end)
            { st.splice(i, 1, end, st[i+1], i_end); }
          i += 2;
          at = Math.min(end, i_end);
        }
        if (!style) { return }
        if (overlay.opaque) {
          st.splice(start, i - start, end, "overlay " + style);
          i = start + 2;
        } else {
          for (; start < i; start += 2) {
            var cur = st[start+1];
            st[start+1] = (cur ? cur + " " : "") + "overlay " + style;
          }
        }
      }, lineClasses);
      context.state = state;
      context.baseTokens = null;
      context.baseTokenPos = 1;
    };

    for (var o = 0; o < cm.state.overlays.length; ++o) loop( o );

    return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}
  }

  function getLineStyles(cm, line, updateFrontier) {
    if (!line.styles || line.styles[0] != cm.state.modeGen) {
      var context = getContextBefore(cm, lineNo(line));
      var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state);
      var result = highlightLine(cm, line, context);
      if (resetState) { context.state = resetState; }
      line.stateAfter = context.save(!resetState);
      line.styles = result.styles;
      if (result.classes) { line.styleClasses = result.classes; }
      else if (line.styleClasses) { line.styleClasses = null; }
      if (updateFrontier === cm.doc.highlightFrontier)
        { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier); }
    }
    return line.styles
  }

  function getContextBefore(cm, n, precise) {
    var doc = cm.doc, display = cm.display;
    if (!doc.mode.startState) { return new Context(doc, true, n) }
    var start = findStartLine(cm, n, precise);
    var saved = start > doc.first && getLine(doc, start - 1).stateAfter;
    var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start);

    doc.iter(start, n, function (line) {
      processLine(cm, line.text, context);
      var pos = context.line;
      line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null;
      context.nextLine();
    });
    if (precise) { doc.modeFrontier = context.line; }
    return context
  }

  // Lightweight form of highlight -- proceed over this line and
  // update state, but don't save a style array. Used for lines that
  // aren't currently visible.
  function processLine(cm, text, context, startAt) {
    var mode = cm.doc.mode;
    var stream = new StringStream(text, cm.options.tabSize, context);
    stream.start = stream.pos = startAt || 0;
    if (text == "") { callBlankLine(mode, context.state); }
    while (!stream.eol()) {
      readToken(mode, stream, context.state);
      stream.start = stream.pos;
    }
  }

  function callBlankLine(mode, state) {
    if (mode.blankLine) { return mode.blankLine(state) }
    if (!mode.innerMode) { return }
    var inner = innerMode(mode, state);
    if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) }
  }

  function readToken(mode, stream, state, inner) {
    for (var i = 0; i < 10; i++) {
      if (inner) { inner[0] = innerMode(mode, state).mode; }
      var style = mode.token(stream, state);
      if (stream.pos > stream.start) { return style }
    }
    throw new Error("Mode " + mode.name + " failed to advance stream.")
  }

  var Token = function(stream, type, state) {
    this.start = stream.start; this.end = stream.pos;
    this.string = stream.current();
    this.type = type || null;
    this.state = state;
  };

  // Utility for getTokenAt and getLineTokens
  function takeToken(cm, pos, precise, asArray) {
    var doc = cm.doc, mode = doc.mode, style;
    pos = clipPos(doc, pos);
    var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise);
    var stream = new StringStream(line.text, cm.options.tabSize, context), tokens;
    if (asArray) { tokens = []; }
    while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
      stream.start = stream.pos;
      style = readToken(mode, stream, context.state);
      if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))); }
    }
    return asArray ? tokens : new Token(stream, style, context.state)
  }

  function extractLineClasses(type, output) {
    if (type) { for (;;) {
      var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/);
      if (!lineClass) { break }
      type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);
      var prop = lineClass[1] ? "bgClass" : "textClass";
      if (output[prop] == null)
        { output[prop] = lineClass[2]; }
      else if (!(new RegExp("(?:^|\\s)" + lineClass[2] + "(?:$|\\s)")).test(output[prop]))
        { output[prop] += " " + lineClass[2]; }
    } }
    return type
  }

  // Run the given mode's parser over a line, calling f for each token.
  function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) {
    var flattenSpans = mode.flattenSpans;
    if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans; }
    var curStart = 0, curStyle = null;
    var stream = new StringStream(text, cm.options.tabSize, context), style;
    var inner = cm.options.addModeClass && [null];
    if (text == "") { extractLineClasses(callBlankLine(mode, context.state), lineClasses); }
    while (!stream.eol()) {
      if (stream.pos > cm.options.maxHighlightLength) {
        flattenSpans = false;
        if (forceToEnd) { processLine(cm, text, context, stream.pos); }
        stream.pos = text.length;
        style = null;
      } else {
        style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses);
      }
      if (inner) {
        var mName = inner[0].name;
        if (mName) { style = "m-" + (style ? mName + " " + style : mName); }
      }
      if (!flattenSpans || curStyle != style) {
        while (curStart < stream.start) {
          curStart = Math.min(stream.start, curStart + 5000);
          f(curStart, curStyle);
        }
        curStyle = style;
      }
      stream.start = stream.pos;
    }
    while (curStart < stream.pos) {
      // Webkit seems to refuse to render text nodes longer than 57444
      // characters, and returns inaccurate measurements in nodes
      // starting around 5000 chars.
      var pos = Math.min(stream.pos, curStart + 5000);
      f(pos, curStyle);
      curStart = pos;
    }
  }

  // Finds the line to start with when starting a parse. Tries to
  // find a line with a stateAfter, so that it can start with a
  // valid state. If that fails, it returns the line with the
  // smallest indentation, which tends to need the least context to
  // parse correctly.
  function findStartLine(cm, n, precise) {
    var minindent, minline, doc = cm.doc;
    var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
    for (var search = n; search > lim; --search) {
      if (search <= doc.first) { return doc.first }
      var line = getLine(doc, search - 1), after = line.stateAfter;
      if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier))
        { return search }
      var indented = countColumn(line.text, null, cm.options.tabSize);
      if (minline == null || minindent > indented) {
        minline = search - 1;
        minindent = indented;
      }
    }
    return minline
  }

  function retreatFrontier(doc, n) {
    doc.modeFrontier = Math.min(doc.modeFrontier, n);
    if (doc.highlightFrontier < n - 10) { return }
    var start = doc.first;
    for (var line = n - 1; line > start; line--) {
      var saved = getLine(doc, line).stateAfter;
      // change is on 3
      // state on line 1 looked ahead 2 -- so saw 3
      // test 1 + 2 < 3 should cover this
      if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) {
        start = line + 1;
        break
      }
    }
    doc.highlightFrontier = Math.min(doc.highlightFrontier, start);
  }

  // Optimize some code when these features are not used.
  var sawReadOnlySpans = false, sawCollapsedSpans = false;

  function seeReadOnlySpans() {
    sawReadOnlySpans = true;
  }

  function seeCollapsedSpans() {
    sawCollapsedSpans = true;
  }

  // TEXTMARKER SPANS

  function MarkedSpan(marker, from, to) {
    this.marker = marker;
    this.from = from; this.to = to;
  }

  // Search an array of spans for a span matching the given marker.
  function getMarkedSpanFor(spans, marker) {
    if (spans) { for (var i = 0; i < spans.length; ++i) {
      var span = spans[i];
      if (span.marker == marker) { return span }
    } }
  }

  // Remove a span from an array, returning undefined if no spans are
  // left (we don't store arrays for lines without spans).
  function removeMarkedSpan(spans, span) {
    var r;
    for (var i = 0; i < spans.length; ++i)
      { if (spans[i] != span) { (r || (r = [])).push(spans[i]); } }
    return r
  }

  // Add a span to a line.
  function addMarkedSpan(line, span, op) {
    var inThisOp = op && window.WeakSet && (op.markedSpans || (op.markedSpans = new WeakSet));
    if (inThisOp && line.markedSpans && inThisOp.has(line.markedSpans)) {
      line.markedSpans.push(span);
    } else {
      line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
      if (inThisOp) { inThisOp.add(line.markedSpans); }
    }
    span.marker.attachLine(line);
  }

  // Used for the algorithm that adjusts markers for a change in the
  // document. These functions cut an array of spans at a given
  // character position, returning an array of remaining chunks (or
  // undefined if nothing remains).
  function markedSpansBefore(old, startCh, isInsert) {
    var nw;
    if (old) { for (var i = 0; i < old.length; ++i) {
      var span = old[i], marker = span.marker;
      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
      if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh)
        ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
      }
    } }
    return nw
  }
  function markedSpansAfter(old, endCh, isInsert) {
    var nw;
    if (old) { for (var i = 0; i < old.length; ++i) {
      var span = old[i], marker = span.marker;
      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
      if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh)
        ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
                                              span.to == null ? null : span.to - endCh));
      }
    } }
    return nw
  }

  // Given a change object, compute the new set of marker spans that
  // cover the line in which the change took place. Removes spans
  // entirely within the change, reconnects spans belonging to the
  // same marker that appear on both sides of the change, and cuts off
  // spans partially within the change. Returns an array of span
  // arrays with one element for each line in (after) the change.
  function stretchSpansOverChange(doc, change) {
    if (change.full) { return null }
    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
    if (!oldFirst && !oldLast) { return null }

    var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;
    // Get the spans that 'stick out' on both sides
    var first = markedSpansBefore(oldFirst, startCh, isInsert);
    var last = markedSpansAfter(oldLast, endCh, isInsert);

    // Next, merge those two ends
    var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
    if (first) {
      // Fix up .to properties of first
      for (var i = 0; i < first.length; ++i) {
        var span = first[i];
        if (span.to == null) {
          var found = getMarkedSpanFor(last, span.marker);
          if (!found) { span.to = startCh; }
          else if (sameLine) { span.to = found.to == null ? null : found.to + offset; }
        }
      }
    }
    if (last) {
      // Fix up .from in last (or move them into first in case of sameLine)
      for (var i$1 = 0; i$1 < last.length; ++i$1) {
        var span$1 = last[i$1];
        if (span$1.to != null) { span$1.to += offset; }
        if (span$1.from == null) {
          var found$1 = getMarkedSpanFor(first, span$1.marker);
          if (!found$1) {
            span$1.from = offset;
            if (sameLine) { (first || (first = [])).push(span$1); }
          }
        } else {
          span$1.from += offset;
          if (sameLine) { (first || (first = [])).push(span$1); }
        }
      }
    }
    // Make sure we didn't create any zero-length spans
    if (first) { first = clearEmptySpans(first); }
    if (last && last != first) { last = clearEmptySpans(last); }

    var newMarkers = [first];
    if (!sameLine) {
      // Fill gap with whole-line-spans
      var gap = change.text.length - 2, gapMarkers;
      if (gap > 0 && first)
        { for (var i$2 = 0; i$2 < first.length; ++i$2)
          { if (first[i$2].to == null)
            { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)); } } }
      for (var i$3 = 0; i$3 < gap; ++i$3)
        { newMarkers.push(gapMarkers); }
      newMarkers.push(last);
    }
    return newMarkers
  }

  // Remove spans that are empty and don't have a clearWhenEmpty
  // option of false.
  function clearEmptySpans(spans) {
    for (var i = 0; i < spans.length; ++i) {
      var span = spans[i];
      if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
        { spans.splice(i--, 1); }
    }
    if (!spans.length) { return null }
    return spans
  }

  // Used to 'clip' out readOnly ranges when making a change.
  function removeReadOnlyRanges(doc, from, to) {
    var markers = null;
    doc.iter(from.line, to.line + 1, function (line) {
      if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {
        var mark = line.markedSpans[i].marker;
        if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
          { (markers || (markers = [])).push(mark); }
      } }
    });
    if (!markers) { return null }
    var parts = [{from: from, to: to}];
    for (var i = 0; i < markers.length; ++i) {
      var mk = markers[i], m = mk.find(0);
      for (var j = 0; j < parts.length; ++j) {
        var p = parts[j];
        if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue }
        var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);
        if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
          { newParts.push({from: p.from, to: m.from}); }
        if (dto > 0 || !mk.inclusiveRight && !dto)
          { newParts.push({from: m.to, to: p.to}); }
        parts.splice.apply(parts, newParts);
        j += newParts.length - 3;
      }
    }
    return parts
  }

  // Connect or disconnect spans from a line.
  function detachMarkedSpans(line) {
    var spans = line.markedSpans;
    if (!spans) { return }
    for (var i = 0; i < spans.length; ++i)
      { spans[i].marker.detachLine(line); }
    line.markedSpans = null;
  }
  function attachMarkedSpans(line, spans) {
    if (!spans) { return }
    for (var i = 0; i < spans.length; ++i)
      { spans[i].marker.attachLine(line); }
    line.markedSpans = spans;
  }

  // Helpers used when computing which overlapping collapsed span
  // counts as the larger one.
  function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 }
  function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 }

  // Returns a number indicating which of two overlapping collapsed
  // spans is larger (and thus includes the other). Falls back to
  // comparing ids when the spans cover exactly the same range.
  function compareCollapsedMarkers(a, b) {
    var lenDiff = a.lines.length - b.lines.length;
    if (lenDiff != 0) { return lenDiff }
    var aPos = a.find(), bPos = b.find();
    var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
    if (fromCmp) { return -fromCmp }
    var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
    if (toCmp) { return toCmp }
    return b.id - a.id
  }

  // Find out whether a line ends or starts in a collapsed span. If
  // so, return the marker for that span.
  function collapsedSpanAtSide(line, start) {
    var sps = sawCollapsedSpans && line.markedSpans, found;
    if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {
      sp = sps[i];
      if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
          (!found || compareCollapsedMarkers(found, sp.marker) < 0))
        { found = sp.marker; }
    } }
    return found
  }
  function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) }
  function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) }

  function collapsedSpanAround(line, ch) {
    var sps = sawCollapsedSpans && line.markedSpans, found;
    if (sps) { for (var i = 0; i < sps.length; ++i) {
      var sp = sps[i];
      if (sp.marker.collapsed && (sp.from == null || sp.from < ch) && (sp.to == null || sp.to > ch) &&
          (!found || compareCollapsedMarkers(found, sp.marker) < 0)) { found = sp.marker; }
    } }
    return found
  }

  // Test whether there exists a collapsed span that partially
  // overlaps (covers the start or end, but not both) of a new span.
  // Such overlap is not allowed.
  function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
    var line = getLine(doc, lineNo);
    var sps = sawCollapsedSpans && line.markedSpans;
    if (sps) { for (var i = 0; i < sps.length; ++i) {
      var sp = sps[i];
      if (!sp.marker.collapsed) { continue }
      var found = sp.marker.find(0);
      var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
      var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
      if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue }
      if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) ||
          fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0))
        { return true }
    } }
  }

  // A visual line is a line as drawn on the screen. Folding, for
  // example, can cause multiple logical lines to appear on the same
  // visual line. This finds the start of the visual line that the
  // given line is part of (usually that is the line itself).
  function visualLine(line) {
    var merged;
    while (merged = collapsedSpanAtStart(line))
      { line = merged.find(-1, true).line; }
    return line
  }

  function visualLineEnd(line) {
    var merged;
    while (merged = collapsedSpanAtEnd(line))
      { line = merged.find(1, true).line; }
    return line
  }

  // Returns an array of logical lines that continue the visual line
  // started by the argument, or undefined if there are no such lines.
  function visualLineContinued(line) {
    var merged, lines;
    while (merged = collapsedSpanAtEnd(line)) {
      line = merged.find(1, true).line
      ;(lines || (lines = [])).push(line);
    }
    return lines
  }

  // Get the line number of the start of the visual line that the
  // given line number is part of.
  function visualLineNo(doc, lineN) {
    var line = getLine(doc, lineN), vis = visualLine(line);
    if (line == vis) { return lineN }
    return lineNo(vis)
  }

  // Get the line number of the start of the next visual line after
  // the given line.
  function visualLineEndNo(doc, lineN) {
    if (lineN > doc.lastLine()) { return lineN }
    var line = getLine(doc, lineN), merged;
    if (!lineIsHidden(doc, line)) { return lineN }
    while (merged = collapsedSpanAtEnd(line))
      { line = merged.find(1, true).line; }
    return lineNo(line) + 1
  }

  // Compute whether a line is hidden. Lines count as hidden when they
  // are part of a visual line that starts with another line, or when
  // they are entirely covered by collapsed, non-widget span.
  function lineIsHidden(doc, line) {
    var sps = sawCollapsedSpans && line.markedSpans;
    if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {
      sp = sps[i];
      if (!sp.marker.collapsed) { continue }
      if (sp.from == null) { return true }
      if (sp.marker.widgetNode) { continue }
      if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
        { return true }
    } }
  }
  function lineIsHiddenInner(doc, line, span) {
    if (span.to == null) {
      var end = span.marker.find(1, true);
      return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker))
    }
    if (span.marker.inclusiveRight && span.to == line.text.length)
      { return true }
    for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) {
      sp = line.markedSpans[i];
      if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
          (sp.to == null || sp.to != span.from) &&
          (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
          lineIsHiddenInner(doc, line, sp)) { return true }
    }
  }

  // Find the height above the given line.
  function heightAtLine(lineObj) {
    lineObj = visualLine(lineObj);

    var h = 0, chunk = lineObj.parent;
    for (var i = 0; i < chunk.lines.length; ++i) {
      var line = chunk.lines[i];
      if (line == lineObj) { break }
      else { h += line.height; }
    }
    for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
      for (var i$1 = 0; i$1 < p.children.length; ++i$1) {
        var cur = p.children[i$1];
        if (cur == chunk) { break }
        else { h += cur.height; }
      }
    }
    return h
  }

  // Compute the character length of a line, taking into account
  // collapsed ranges (see markText) that might hide parts, and join
  // other lines onto it.
  function lineLength(line) {
    if (line.height == 0) { return 0 }
    var len = line.text.length, merged, cur = line;
    while (merged = collapsedSpanAtStart(cur)) {
      var found = merged.find(0, true);
      cur = found.from.line;
      len += found.from.ch - found.to.ch;
    }
    cur = line;
    while (merged = collapsedSpanAtEnd(cur)) {
      var found$1 = merged.find(0, true);
      len -= cur.text.length - found$1.from.ch;
      cur = found$1.to.line;
      len += cur.text.length - found$1.to.ch;
    }
    return len
  }

  // Find the longest line in the document.
  function findMaxLine(cm) {
    var d = cm.display, doc = cm.doc;
    d.maxLine = getLine(doc, doc.first);
    d.maxLineLength = lineLength(d.maxLine);
    d.maxLineChanged = true;
    doc.iter(function (line) {
      var len = lineLength(line);
      if (len > d.maxLineLength) {
        d.maxLineLength = len;
        d.maxLine = line;
      }
    });
  }

  // LINE DATA STRUCTURE

  // Line objects. These hold state related to a line, including
  // highlighting info (the styles array).
  var Line = function(text, markedSpans, estimateHeight) {
    this.text = text;
    attachMarkedSpans(this, markedSpans);
    this.height = estimateHeight ? estimateHeight(this) : 1;
  };

  Line.prototype.lineNo = function () { return lineNo(this) };
  eventMixin(Line);

  // Change the content (text, markers) of a line. Automatically
  // invalidates cached information and tries to re-estimate the
  // line's height.
  function updateLine(line, text, markedSpans, estimateHeight) {
    line.text = text;
    if (line.stateAfter) { line.stateAfter = null; }
    if (line.styles) { line.styles = null; }
    if (line.order != null) { line.order = null; }
    detachMarkedSpans(line);
    attachMarkedSpans(line, markedSpans);
    var estHeight = estimateHeight ? estimateHeight(line) : 1;
    if (estHeight != line.height) { updateLineHeight(line, estHeight); }
  }

  // Detach a line from the document tree and its markers.
  function cleanUpLine(line) {
    line.parent = null;
    detachMarkedSpans(line);
  }

  // Convert a style as returned by a mode (either null, or a string
  // containing one or more styles) to a CSS style. This is cached,
  // and also looks for line-wide styles.
  var styleToClassCache = {}, styleToClassCacheWithMode = {};
  function interpretTokenStyle(style, options) {
    if (!style || /^\s*$/.test(style)) { return null }
    var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
    return cache[style] ||
      (cache[style] = style.replace(/\S+/g, "cm-$&"))
  }

  // Render the DOM representation of the text of a line. Also builds
  // up a 'line map', which points at the DOM nodes that represent
  // specific stretches of text, and is used by the measuring code.
  // The returned object contains the DOM node, this map, and
  // information about line-wide styles that were set by the mode.
  function buildLineContent(cm, lineView) {
    // The padding-right forces the element to have a 'border', which
    // is needed on Webkit to be able to get line-level bounding
    // rectangles for it (in measureChar).
    var content = eltP("span", null, null, webkit ? "padding-right: .1px" : null);
    var builder = {pre: eltP("pre", [content], "CodeMirror-line"), content: content,
                   col: 0, pos: 0, cm: cm,
                   trailingSpace: false,
                   splitSpaces: cm.getOption("lineWrapping")};
    lineView.measure = {};

    // Iterate over the logical lines that make up this visual line.
    for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
      var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0);
      builder.pos = 0;
      builder.addToken = buildToken;
      // Optionally wire in some hacks into the token-rendering
      // algorithm, to deal with browser quirks.
      if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction)))
        { builder.addToken = buildTokenBadBidi(builder.addToken, order); }
      builder.map = [];
      var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);
      insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));
      if (line.styleClasses) {
        if (line.styleClasses.bgClass)
          { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || ""); }
        if (line.styleClasses.textClass)
          { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || ""); }
      }

      // Ensure at least a single node is present, for measuring.
      if (builder.map.length == 0)
        { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))); }

      // Store the map and a cache object for the current logical line
      if (i == 0) {
        lineView.measure.map = builder.map;
        lineView.measure.cache = {};
      } else {
  (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map)
        ;(lineView.measure.caches || (lineView.measure.caches = [])).push({});
      }
    }

    // See issue #2901
    if (webkit) {
      var last = builder.content.lastChild;
      if (/\bcm-tab\b/.test(last.className) || (last.querySelector && last.querySelector(".cm-tab")))
        { builder.content.className = "cm-tab-wrap-hack"; }
    }

    signal(cm, "renderLine", cm, lineView.line, builder.pre);
    if (builder.pre.className)
      { builder.textClass = joinClasses(builder.pre.className, builder.textClass || ""); }

    return builder
  }

  function defaultSpecialCharPlaceholder(ch) {
    var token = elt("span", "\u2022", "cm-invalidchar");
    token.title = "\\u" + ch.charCodeAt(0).toString(16);
    token.setAttribute("aria-label", token.title);
    return token
  }

  // Build up the DOM representation for a single token, and add it to
  // the line map. Takes care to render special characters separately.
  function buildToken(builder, text, style, startStyle, endStyle, css, attributes) {
    if (!text) { return }
    var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text;
    var special = builder.cm.state.specialChars, mustWrap = false;
    var content;
    if (!special.test(text)) {
      builder.col += text.length;
      content = document.createTextNode(displayText);
      builder.map.push(builder.pos, builder.pos + text.length, content);
      if (ie && ie_version < 9) { mustWrap = true; }
      builder.pos += text.length;
    } else {
      content = document.createDocumentFragment();
      var pos = 0;
      while (true) {
        special.lastIndex = pos;
        var m = special.exec(text);
        var skipped = m ? m.index - pos : text.length - pos;
        if (skipped) {
          var txt = document.createTextNode(displayText.slice(pos, pos + skipped));
          if (ie && ie_version < 9) { content.appendChild(elt("span", [txt])); }
          else { content.appendChild(txt); }
          builder.map.push(builder.pos, builder.pos + skipped, txt);
          builder.col += skipped;
          builder.pos += skipped;
        }
        if (!m) { break }
        pos += skipped + 1;
        var txt$1 = (void 0);
        if (m[0] == "\t") {
          var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
          txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
          txt$1.setAttribute("role", "presentation");
          txt$1.setAttribute("cm-text", "\t");
          builder.col += tabWidth;
        } else if (m[0] == "\r" || m[0] == "\n") {
          txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar"));
          txt$1.setAttribute("cm-text", m[0]);
          builder.col += 1;
        } else {
          txt$1 = builder.cm.options.specialCharPlaceholder(m[0]);
          txt$1.setAttribute("cm-text", m[0]);
          if (ie && ie_version < 9) { content.appendChild(elt("span", [txt$1])); }
          else { content.appendChild(txt$1); }
          builder.col += 1;
        }
        builder.map.push(builder.pos, builder.pos + 1, txt$1);
        builder.pos++;
      }
    }
    builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32;
    if (style || startStyle || endStyle || mustWrap || css || attributes) {
      var fullStyle = style || "";
      if (startStyle) { fullStyle += startStyle; }
      if (endStyle) { fullStyle += endStyle; }
      var token = elt("span", [content], fullStyle, css);
      if (attributes) {
        for (var attr in attributes) { if (attributes.hasOwnProperty(attr) && attr != "style" && attr != "class")
          { token.setAttribute(attr, attributes[attr]); } }
      }
      return builder.content.appendChild(token)
    }
    builder.content.appendChild(content);
  }

  // Change some spaces to NBSP to prevent the browser from collapsing
  // trailing spaces at the end of a line when rendering text (issue #1362).
  function splitSpaces(text, trailingBefore) {
    if (text.length > 1 && !/  /.test(text)) { return text }
    var spaceBefore = trailingBefore, result = "";
    for (var i = 0; i < text.length; i++) {
      var ch = text.charAt(i);
      if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32))
        { ch = "\u00a0"; }
      result += ch;
      spaceBefore = ch == " ";
    }
    return result
  }

  // Work around nonsense dimensions being reported for stretches of
  // right-to-left text.
  function buildTokenBadBidi(inner, order) {
    return function (builder, text, style, startStyle, endStyle, css, attributes) {
      style = style ? style + " cm-force-border" : "cm-force-border";
      var start = builder.pos, end = start + text.length;
      for (;;) {
        // Find the part that overlaps with the start of this text
        var part = (void 0);
        for (var i = 0; i < order.length; i++) {
          part = order[i];
          if (part.to > start && part.from <= start) { break }
        }
        if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, css, attributes) }
        inner(builder, text.slice(0, part.to - start), style, startStyle, null, css, attributes);
        startStyle = null;
        text = text.slice(part.to - start);
        start = part.to;
      }
    }
  }

  function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
    var widget = !ignoreWidget && marker.widgetNode;
    if (widget) { builder.map.push(builder.pos, builder.pos + size, widget); }
    if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {
      if (!widget)
        { widget = builder.content.appendChild(document.createElement("span")); }
      widget.setAttribute("cm-marker", marker.id);
    }
    if (widget) {
      builder.cm.display.input.setUneditable(widget);
      builder.content.appendChild(widget);
    }
    builder.pos += size;
    builder.trailingSpace = false;
  }

  // Outputs a number of spans to make up a line, taking highlighting
  // and marked text into account.
  function insertLineContent(line, builder, styles) {
    var spans = line.markedSpans, allText = line.text, at = 0;
    if (!spans) {
      for (var i$1 = 1; i$1 < styles.length; i$1+=2)
        { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)); }
      return
    }

    var len = allText.length, pos = 0, i = 1, text = "", style, css;
    var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed, attributes;
    for (;;) {
      if (nextChange == pos) { // Update current marker set
        spanStyle = spanEndStyle = spanStartStyle = css = "";
        attributes = null;
        collapsed = null; nextChange = Infinity;
        var foundBookmarks = [], endStyles = (void 0);
        for (var j = 0; j < spans.length; ++j) {
          var sp = spans[j], m = sp.marker;
          if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
            foundBookmarks.push(m);
          } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {
            if (sp.to != null && sp.to != pos && nextChange > sp.to) {
              nextChange = sp.to;
              spanEndStyle = "";
            }
            if (m.className) { spanStyle += " " + m.className; }
            if (m.css) { css = (css ? css + ";" : "") + m.css; }
            if (m.startStyle && sp.from == pos) { spanStartStyle += " " + m.startStyle; }
            if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to); }
            // support for the old title property
            // https://github.com/codemirror/CodeMirror/pull/5673
            if (m.title) { (attributes || (attributes = {})).title = m.title; }
            if (m.attributes) {
              for (var attr in m.attributes)
                { (attributes || (attributes = {}))[attr] = m.attributes[attr]; }
            }
            if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
              { collapsed = sp; }
          } else if (sp.from > pos && nextChange > sp.from) {
            nextChange = sp.from;
          }
        }
        if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2)
          { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += " " + endStyles[j$1]; } } }

        if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2)
          { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]); } }
        if (collapsed && (collapsed.from || 0) == pos) {
          buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
                             collapsed.marker, collapsed.from == null);
          if (collapsed.to == null) { return }
          if (collapsed.to == pos) { collapsed = false; }
        }
      }
      if (pos >= len) { break }

      var upto = Math.min(len, nextChange);
      while (true) {
        if (text) {
          var end = pos + text.length;
          if (!collapsed) {
            var tokenText = end > upto ? text.slice(0, upto - pos) : text;
            builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
                             spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", css, attributes);
          }
          if (end >= upto) {text = text.slice(upto - pos); pos = upto; break}
          pos = end;
          spanStartStyle = "";
        }
        text = allText.slice(at, at = styles[i++]);
        style = interpretTokenStyle(styles[i++], builder.cm.options);
      }
    }
  }


  // These objects are used to represent the visible (currently drawn)
  // part of the document. A LineView may correspond to multiple
  // logical lines, if those are connected by collapsed ranges.
  function LineView(doc, line, lineN) {
    // The starting line
    this.line = line;
    // Continuing lines, if any
    this.rest = visualLineContinued(line);
    // Number of logical lines in this visual line
    this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
    this.node = this.text = null;
    this.hidden = lineIsHidden(doc, line);
  }

  // Create a range of LineView objects for the given lines.
  function buildViewArray(cm, from, to) {
    var array = [], nextPos;
    for (var pos = from; pos < to; pos = nextPos) {
      var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
      nextPos = pos + view.size;
      array.push(view);
    }
    return array
  }

  var operationGroup = null;

  function pushOperation(op) {
    if (operationGroup) {
      operationGroup.ops.push(op);
    } else {
      op.ownsGroup = operationGroup = {
        ops: [op],
        delayedCallbacks: []
      };
    }
  }

  function fireCallbacksForOps(group) {
    // Calls delayed callbacks and cursorActivity handlers until no
    // new ones appear
    var callbacks = group.delayedCallbacks, i = 0;
    do {
      for (; i < callbacks.length; i++)
        { callbacks[i].call(null); }
      for (var j = 0; j < group.ops.length; j++) {
        var op = group.ops[j];
        if (op.cursorActivityHandlers)
          { while (op.cursorActivityCalled < op.cursorActivityHandlers.length)
            { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm); } }
      }
    } while (i < callbacks.length)
  }

  function finishOperation(op, endCb) {
    var group = op.ownsGroup;
    if (!group) { return }

    try { fireCallbacksForOps(group); }
    finally {
      operationGroup = null;
      endCb(group);
    }
  }

  var orphanDelayedCallbacks = null;

  // Often, we want to signal events at a point where we are in the
  // middle of some work, but don't want the handler to start calling
  // other methods on the editor, which might be in an inconsistent
  // state or simply not expect any other events to happen.
  // signalLater looks whether there are any handlers, and schedules
  // them to be executed when the last operation ends, or, if no
  // operation is active, when a timeout fires.
  function signalLater(emitter, type /*, values...*/) {
    var arr = getHandlers(emitter, type);
    if (!arr.length) { return }
    var args = Array.prototype.slice.call(arguments, 2), list;
    if (operationGroup) {
      list = operationGroup.delayedCallbacks;
    } else if (orphanDelayedCallbacks) {
      list = orphanDelayedCallbacks;
    } else {
      list = orphanDelayedCallbacks = [];
      setTimeout(fireOrphanDelayed, 0);
    }
    var loop = function ( i ) {
      list.push(function () { return arr[i].apply(null, args); });
    };

    for (var i = 0; i < arr.length; ++i)
      loop( i );
  }

  function fireOrphanDelayed() {
    var delayed = orphanDelayedCallbacks;
    orphanDelayedCallbacks = null;
    for (var i = 0; i < delayed.length; ++i) { delayed[i](); }
  }

  // When an aspect of a line changes, a string is added to
  // lineView.changes. This updates the relevant part of the line's
  // DOM structure.
  function updateLineForChanges(cm, lineView, lineN, dims) {
    for (var j = 0; j < lineView.changes.length; j++) {
      var type = lineView.changes[j];
      if (type == "text") { updateLineText(cm, lineView); }
      else if (type == "gutter") { updateLineGutter(cm, lineView, lineN, dims); }
      else if (type == "class") { updateLineClasses(cm, lineView); }
      else if (type == "widget") { updateLineWidgets(cm, lineView, dims); }
    }
    lineView.changes = null;
  }

  // Lines with gutter elements, widgets or a background class need to
  // be wrapped, and have the extra elements added to the wrapper div
  function ensureLineWrapped(lineView) {
    if (lineView.node == lineView.text) {
      lineView.node = elt("div", null, null, "position: relative");
      if (lineView.text.parentNode)
        { lineView.text.parentNode.replaceChild(lineView.node, lineView.text); }
      lineView.node.appendChild(lineView.text);
      if (ie && ie_version < 8) { lineView.node.style.zIndex = 2; }
    }
    return lineView.node
  }

  function updateLineBackground(cm, lineView) {
    var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
    if (cls) { cls += " CodeMirror-linebackground"; }
    if (lineView.background) {
      if (cls) { lineView.background.className = cls; }
      else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }
    } else if (cls) {
      var wrap = ensureLineWrapped(lineView);
      lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
      cm.display.input.setUneditable(lineView.background);
    }
  }

  // Wrapper around buildLineContent which will reuse the structure
  // in display.externalMeasured when possible.
  function getLineContent(cm, lineView) {
    var ext = cm.display.externalMeasured;
    if (ext && ext.line == lineView.line) {
      cm.display.externalMeasured = null;
      lineView.measure = ext.measure;
      return ext.built
    }
    return buildLineContent(cm, lineView)
  }

  // Redraw the line's text. Interacts with the background and text
  // classes because the mode may output tokens that influence these
  // classes.
  function updateLineText(cm, lineView) {
    var cls = lineView.text.className;
    var built = getLineContent(cm, lineView);
    if (lineView.text == lineView.node) { lineView.node = built.pre; }
    lineView.text.parentNode.replaceChild(built.pre, lineView.text);
    lineView.text = built.pre;
    if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
      lineView.bgClass = built.bgClass;
      lineView.textClass = built.textClass;
      updateLineClasses(cm, lineView);
    } else if (cls) {
      lineView.text.className = cls;
    }
  }

  function updateLineClasses(cm, lineView) {
    updateLineBackground(cm, lineView);
    if (lineView.line.wrapClass)
      { ensureLineWrapped(lineView).className = lineView.line.wrapClass; }
    else if (lineView.node != lineView.text)
      { lineView.node.className = ""; }
    var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
    lineView.text.className = textClass || "";
  }

  function updateLineGutter(cm, lineView, lineN, dims) {
    if (lineView.gutter) {
      lineView.node.removeChild(lineView.gutter);
      lineView.gutter = null;
    }
    if (lineView.gutterBackground) {
      lineView.node.removeChild(lineView.gutterBackground);
      lineView.gutterBackground = null;
    }
    if (lineView.line.gutterClass) {
      var wrap = ensureLineWrapped(lineView);
      lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass,
                                      ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px"));
      cm.display.input.setUneditable(lineView.gutterBackground);
      wrap.insertBefore(lineView.gutterBackground, lineView.text);
    }
    var markers = lineView.line.gutterMarkers;
    if (cm.options.lineNumbers || markers) {
      var wrap$1 = ensureLineWrapped(lineView);
      var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"));
      gutterWrap.setAttribute("aria-hidden", "true");
      cm.display.input.setUneditable(gutterWrap);
      wrap$1.insertBefore(gutterWrap, lineView.text);
      if (lineView.line.gutterClass)
        { gutterWrap.className += " " + lineView.line.gutterClass; }
      if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
        { lineView.lineNumber = gutterWrap.appendChild(
          elt("div", lineNumberFor(cm.options, lineN),
              "CodeMirror-linenumber CodeMirror-gutter-elt",
              ("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px"))); }
      if (markers) { for (var k = 0; k < cm.display.gutterSpecs.length; ++k) {
        var id = cm.display.gutterSpecs[k].className, found = markers.hasOwnProperty(id) && markers[id];
        if (found)
          { gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt",
                                     ("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px"))); }
      } }
    }
  }

  function updateLineWidgets(cm, lineView, dims) {
    if (lineView.alignable) { lineView.alignable = null; }
    var isWidget = classTest("CodeMirror-linewidget");
    for (var node = lineView.node.firstChild, next = (void 0); node; node = next) {
      next = node.nextSibling;
      if (isWidget.test(node.className)) { lineView.node.removeChild(node); }
    }
    insertLineWidgets(cm, lineView, dims);
  }

  // Build a line's DOM representation from scratch
  function buildLineElement(cm, lineView, lineN, dims) {
    var built = getLineContent(cm, lineView);
    lineView.text = lineView.node = built.pre;
    if (built.bgClass) { lineView.bgClass = built.bgClass; }
    if (built.textClass) { lineView.textClass = built.textClass; }

    updateLineClasses(cm, lineView);
    updateLineGutter(cm, lineView, lineN, dims);
    insertLineWidgets(cm, lineView, dims);
    return lineView.node
  }

  // A lineView may contain multiple logical lines (when merged by
  // collapsed spans). The widgets for all of them need to be drawn.
  function insertLineWidgets(cm, lineView, dims) {
    insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);
    if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)
      { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false); } }
  }

  function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {
    if (!line.widgets) { return }
    var wrap = ensureLineWrapped(lineView);
    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget" + (widget.className ? " " + widget.className : ""));
      if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true"); }
      positionLineWidget(widget, node, lineView, dims);
      cm.display.input.setUneditable(node);
      if (allowAbove && widget.above)
        { wrap.insertBefore(node, lineView.gutter || lineView.text); }
      else
        { wrap.appendChild(node); }
      signalLater(widget, "redraw");
    }
  }

  function positionLineWidget(widget, node, lineView, dims) {
    if (widget.noHScroll) {
  (lineView.alignable || (lineView.alignable = [])).push(node);
      var width = dims.wrapperWidth;
      node.style.left = dims.fixedPos + "px";
      if (!widget.coverGutter) {
        width -= dims.gutterTotalWidth;
        node.style.paddingLeft = dims.gutterTotalWidth + "px";
      }
      node.style.width = width + "px";
    }
    if (widget.coverGutter) {
      node.style.zIndex = 5;
      node.style.position = "relative";
      if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + "px"; }
    }
  }

  function widgetHeight(widget) {
    if (widget.height != null) { return widget.height }
    var cm = widget.doc.cm;
    if (!cm) { return 0 }
    if (!contains(document.body, widget.node)) {
      var parentStyle = "position: relative;";
      if (widget.coverGutter)
        { parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;"; }
      if (widget.noHScroll)
        { parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;"; }
      removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle));
    }
    return widget.height = widget.node.parentNode.offsetHeight
  }

  // Return true when the given mouse event happened in a widget
  function eventInWidget(display, e) {
    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
      if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") ||
          (n.parentNode == display.sizer && n != display.mover))
        { return true }
    }
  }

  // POSITION MEASUREMENT

  function paddingTop(display) {return display.lineSpace.offsetTop}
  function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight}
  function paddingH(display) {
    if (display.cachedPaddingH) { return display.cachedPaddingH }
    var e = removeChildrenAndAdd(display.measure, elt("pre", "x", "CodeMirror-line-like"));
    var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
    if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data; }
    return data
  }

  function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth }
  function displayWidth(cm) {
    return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth
  }
  function displayHeight(cm) {
    return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight
  }

  // Ensure the lineView.wrapping.heights array is populated. This is
  // an array of bottom offsets for the lines that make up a drawn
  // line. When lineWrapping is on, there might be more than one
  // height.
  function ensureLineHeights(cm, lineView, rect) {
    var wrapping = cm.options.lineWrapping;
    var curWidth = wrapping && displayWidth(cm);
    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
      var heights = lineView.measure.heights = [];
      if (wrapping) {
        lineView.measure.width = curWidth;
        var rects = lineView.text.firstChild.getClientRects();
        for (var i = 0; i < rects.length - 1; i++) {
          var cur = rects[i], next = rects[i + 1];
          if (Math.abs(cur.bottom - next.bottom) > 2)
            { heights.push((cur.bottom + next.top) / 2 - rect.top); }
        }
      }
      heights.push(rect.bottom - rect.top);
    }
  }

  // Find a line map (mapping character offsets to text nodes) and a
  // measurement cache for the given line number. (A line view might
  // contain multiple lines when collapsed ranges are present.)
  function mapFromLineView(lineView, line, lineN) {
    if (lineView.line == line)
      { return {map: lineView.measure.map, cache: lineView.measure.cache} }
    if (lineView.rest) {
      for (var i = 0; i < lineView.rest.length; i++)
        { if (lineView.rest[i] == line)
          { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } }
      for (var i$1 = 0; i$1 < lineView.rest.length; i$1++)
        { if (lineNo(lineView.rest[i$1]) > lineN)
          { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } }
    }
  }

  // Render a line into the hidden node display.externalMeasured. Used
  // when measurement is needed for a line that's not in the viewport.
  function updateExternalMeasurement(cm, line) {
    line = visualLine(line);
    var lineN = lineNo(line);
    var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
    view.lineN = lineN;
    var built = view.built = buildLineContent(cm, view);
    view.text = built.pre;
    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
    return view
  }

  // Get a {top, bottom, left, right} box (in line-local coordinates)
  // for a given character.
  function measureChar(cm, line, ch, bias) {
    return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias)
  }

  // Find a line view that corresponds to the given line number.
  function findViewForLine(cm, lineN) {
    if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
      { return cm.display.view[findViewIndex(cm, lineN)] }
    var ext = cm.display.externalMeasured;
    if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
      { return ext }
  }

  // Measurement can be split in two steps, the set-up work that
  // applies to the whole line, and the measurement of the actual
  // character. Functions like coordsChar, that need to do a lot of
  // measurements in a row, can thus ensure that the set-up work is
  // only done once.
  function prepareMeasureForLine(cm, line) {
    var lineN = lineNo(line);
    var view = findViewForLine(cm, lineN);
    if (view && !view.text) {
      view = null;
    } else if (view && view.changes) {
      updateLineForChanges(cm, view, lineN, getDimensions(cm));
      cm.curOp.forceUpdate = true;
    }
    if (!view)
      { view = updateExternalMeasurement(cm, line); }

    var info = mapFromLineView(view, line, lineN);
    return {
      line: line, view: view, rect: null,
      map: info.map, cache: info.cache, before: info.before,
      hasHeights: false
    }
  }

  // Given a prepared measurement object, measures the position of an
  // actual character (or fetches it from the cache).
  function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
    if (prepared.before) { ch = -1; }
    var key = ch + (bias || ""), found;
    if (prepared.cache.hasOwnProperty(key)) {
      found = prepared.cache[key];
    } else {
      if (!prepared.rect)
        { prepared.rect = prepared.view.text.getBoundingClientRect(); }
      if (!prepared.hasHeights) {
        ensureLineHeights(cm, prepared.view, prepared.rect);
        prepared.hasHeights = true;
      }
      found = measureCharInner(cm, prepared, ch, bias);
      if (!found.bogus) { prepared.cache[key] = found; }
    }
    return {left: found.left, right: found.right,
            top: varHeight ? found.rtop : found.top,
            bottom: varHeight ? found.rbottom : found.bottom}
  }

  var nullRect = {left: 0, right: 0, top: 0, bottom: 0};

  function nodeAndOffsetInLineMap(map, ch, bias) {
    var node, start, end, collapse, mStart, mEnd;
    // First, search the line map for the text node corresponding to,
    // or closest to, the target character.
    for (var i = 0; i < map.length; i += 3) {
      mStart = map[i];
      mEnd = map[i + 1];
      if (ch < mStart) {
        start = 0; end = 1;
        collapse = "left";
      } else if (ch < mEnd) {
        start = ch - mStart;
        end = start + 1;
      } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
        end = mEnd - mStart;
        start = end - 1;
        if (ch >= mEnd) { collapse = "right"; }
      }
      if (start != null) {
        node = map[i + 2];
        if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
          { collapse = bias; }
        if (bias == "left" && start == 0)
          { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
            node = map[(i -= 3) + 2];
            collapse = "left";
          } }
        if (bias == "right" && start == mEnd - mStart)
          { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
            node = map[(i += 3) + 2];
            collapse = "right";
          } }
        break
      }
    }
    return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd}
  }

  function getUsefulRect(rects, bias) {
    var rect = nullRect;
    if (bias == "left") { for (var i = 0; i < rects.length; i++) {
      if ((rect = rects[i]).left != rect.right) { break }
    } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) {
      if ((rect = rects[i$1]).left != rect.right) { break }
    } }
    return rect
  }

  function measureCharInner(cm, prepared, ch, bias) {
    var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);
    var node = place.node, start = place.start, end = place.end, collapse = place.collapse;

    var rect;
    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
      for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned
        while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start; }
        while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end; }
        if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart)
          { rect = node.parentNode.getBoundingClientRect(); }
        else
          { rect = getUsefulRect(range(node, start, end).getClientRects(), bias); }
        if (rect.left || rect.right || start == 0) { break }
        end = start;
        start = start - 1;
        collapse = "right";
      }
      if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect); }
    } else { // If it is a widget, simply get the box for the whole widget.
      if (start > 0) { collapse = bias = "right"; }
      var rects;
      if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
        { rect = rects[bias == "right" ? rects.length - 1 : 0]; }
      else
        { rect = node.getBoundingClientRect(); }
    }
    if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {
      var rSpan = node.parentNode.getClientRects()[0];
      if (rSpan)
        { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom}; }
      else
        { rect = nullRect; }
    }

    var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;
    var mid = (rtop + rbot) / 2;
    var heights = prepared.view.measure.heights;
    var i = 0;
    for (; i < heights.length - 1; i++)
      { if (mid < heights[i]) { break } }
    var top = i ? heights[i - 1] : 0, bot = heights[i];
    var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
                  right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
                  top: top, bottom: bot};
    if (!rect.left && !rect.right) { result.bogus = true; }
    if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }

    return result
  }

  // Work around problem with bounding client rects on ranges being
  // returned incorrectly when zoomed on IE10 and below.
  function maybeUpdateRectForZooming(measure, rect) {
    if (!window.screen || screen.logicalXDPI == null ||
        screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))
      { return rect }
    var scaleX = screen.logicalXDPI / screen.deviceXDPI;
    var scaleY = screen.logicalYDPI / screen.deviceYDPI;
    return {left: rect.left * scaleX, right: rect.right * scaleX,
            top: rect.top * scaleY, bottom: rect.bottom * scaleY}
  }

  function clearLineMeasurementCacheFor(lineView) {
    if (lineView.measure) {
      lineView.measure.cache = {};
      lineView.measure.heights = null;
      if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)
        { lineView.measure.caches[i] = {}; } }
    }
  }

  function clearLineMeasurementCache(cm) {
    cm.display.externalMeasure = null;
    removeChildren(cm.display.lineMeasure);
    for (var i = 0; i < cm.display.view.length; i++)
      { clearLineMeasurementCacheFor(cm.display.view[i]); }
  }

  function clearCaches(cm) {
    clearLineMeasurementCache(cm);
    cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
    if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true; }
    cm.display.lineNumChars = null;
  }

  function pageScrollX(doc) {
    // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206
    // which causes page_Offset and bounding client rects to use
    // different reference viewports and invalidate our calculations.
    if (chrome && android) { return -(doc.body.getBoundingClientRect().left - parseInt(getComputedStyle(doc.body).marginLeft)) }
    return doc.defaultView.pageXOffset || (doc.documentElement || doc.body).scrollLeft
  }
  function pageScrollY(doc) {
    if (chrome && android) { return -(doc.body.getBoundingClientRect().top - parseInt(getComputedStyle(doc.body).marginTop)) }
    return doc.defaultView.pageYOffset || (doc.documentElement || doc.body).scrollTop
  }

  function widgetTopHeight(lineObj) {
    var ref = visualLine(lineObj);
    var widgets = ref.widgets;
    var height = 0;
    if (widgets) { for (var i = 0; i < widgets.length; ++i) { if (widgets[i].above)
      { height += widgetHeight(widgets[i]); } } }
    return height
  }

  // Converts a {top, bottom, left, right} box from line-local
  // coordinates into another coordinate system. Context may be one of
  // "line", "div" (display.lineDiv), "local"./null (editor), "window",
  // or "page".
  function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) {
    if (!includeWidgets) {
      var height = widgetTopHeight(lineObj);
      rect.top += height; rect.bottom += height;
    }
    if (context == "line") { return rect }
    if (!context) { context = "local"; }
    var yOff = heightAtLine(lineObj);
    if (context == "local") { yOff += paddingTop(cm.display); }
    else { yOff -= cm.display.viewOffset; }
    if (context == "page" || context == "window") {
      var lOff = cm.display.lineSpace.getBoundingClientRect();
      yOff += lOff.top + (context == "window" ? 0 : pageScrollY(doc(cm)));
      var xOff = lOff.left + (context == "window" ? 0 : pageScrollX(doc(cm)));
      rect.left += xOff; rect.right += xOff;
    }
    rect.top += yOff; rect.bottom += yOff;
    return rect
  }

  // Coverts a box from "div" coords to another coordinate system.
  // Context may be "window", "page", "div", or "local"./null.
  function fromCoordSystem(cm, coords, context) {
    if (context == "div") { return coords }
    var left = coords.left, top = coords.top;
    // First move into "page" coordinate system
    if (context == "page") {
      left -= pageScrollX(doc(cm));
      top -= pageScrollY(doc(cm));
    } else if (context == "local" || !context) {
      var localBox = cm.display.sizer.getBoundingClientRect();
      left += localBox.left;
      top += localBox.top;
    }

    var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
    return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}
  }

  function charCoords(cm, pos, context, lineObj, bias) {
    if (!lineObj) { lineObj = getLine(cm.doc, pos.line); }
    return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context)
  }

  // Returns a box for a given cursor position, which may have an
  // 'other' property containing the position of the secondary cursor
  // on a bidi boundary.
  // A cursor Pos(line, char, "before") is on the same visual line as `char - 1`
  // and after `char - 1` in writing order of `char - 1`
  // A cursor Pos(line, char, "after") is on the same visual line as `char`
  // and before `char` in writing order of `char`
  // Examples (upper-case letters are RTL, lower-case are LTR):
  //     Pos(0, 1, ...)
  //     before   after
  // ab     a|b     a|b
  // aB     a|B     aB|
  // Ab     |Ab     A|b
  // AB     B|A     B|A
  // Every position after the last character on a line is considered to stick
  // to the last character on the line.
  function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
    lineObj = lineObj || getLine(cm.doc, pos.line);
    if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); }
    function get(ch, right) {
      var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight);
      if (right) { m.left = m.right; } else { m.right = m.left; }
      return intoCoordSystem(cm, lineObj, m, context)
    }
    var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky;
    if (ch >= lineObj.text.length) {
      ch = lineObj.text.length;
      sticky = "before";
    } else if (ch <= 0) {
      ch = 0;
      sticky = "after";
    }
    if (!order) { return get(sticky == "before" ? ch - 1 : ch, sticky == "before") }

    function getBidi(ch, partPos, invert) {
      var part = order[partPos], right = part.level == 1;
      return get(invert ? ch - 1 : ch, right != invert)
    }
    var partPos = getBidiPartAt(order, ch, sticky);
    var other = bidiOther;
    var val = getBidi(ch, partPos, sticky == "before");
    if (other != null) { val.other = getBidi(ch, other, sticky != "before"); }
    return val
  }

  // Used to cheaply estimate the coordinates for a position. Used for
  // intermediate scroll updates.
  function estimateCoords(cm, pos) {
    var left = 0;
    pos = clipPos(cm.doc, pos);
    if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch; }
    var lineObj = getLine(cm.doc, pos.line);
    var top = heightAtLine(lineObj) + paddingTop(cm.display);
    return {left: left, right: left, top: top, bottom: top + lineObj.height}
  }

  // Positions returned by coordsChar contain some extra information.
  // xRel is the relative x position of the input coordinates compared
  // to the found position (so xRel > 0 means the coordinates are to
  // the right of the character position, for example). When outside
  // is true, that means the coordinates lie outside the line's
  // vertical range.
  function PosWithInfo(line, ch, sticky, outside, xRel) {
    var pos = Pos(line, ch, sticky);
    pos.xRel = xRel;
    if (outside) { pos.outside = outside; }
    return pos
  }

  // Compute the character position closest to the given coordinates.
  // Input must be lineSpace-local ("div" coordinate system).
  function coordsChar(cm, x, y) {
    var doc = cm.doc;
    y += cm.display.viewOffset;
    if (y < 0) { return PosWithInfo(doc.first, 0, null, -1, -1) }
    var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
    if (lineN > last)
      { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, 1, 1) }
    if (x < 0) { x = 0; }

    var lineObj = getLine(doc, lineN);
    for (;;) {
      var found = coordsCharInner(cm, lineObj, lineN, x, y);
      var collapsed = collapsedSpanAround(lineObj, found.ch + (found.xRel > 0 || found.outside > 0 ? 1 : 0));
      if (!collapsed) { return found }
      var rangeEnd = collapsed.find(1);
      if (rangeEnd.line == lineN) { return rangeEnd }
      lineObj = getLine(doc, lineN = rangeEnd.line);
    }
  }

  function wrappedLineExtent(cm, lineObj, preparedMeasure, y) {
    y -= widgetTopHeight(lineObj);
    var end = lineObj.text.length;
    var begin = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y; }, end, 0);
    end = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch).top > y; }, begin, end);
    return {begin: begin, end: end}
  }

  function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) {
    if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); }
    var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), "line").top;
    return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop)
  }

  // Returns true if the given side of a box is after the given
  // coordinates, in top-to-bottom, left-to-right order.
  function boxIsAfter(box, x, y, left) {
    return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x
  }

  function coordsCharInner(cm, lineObj, lineNo, x, y) {
    // Move y into line-local coordinate space
    y -= heightAtLine(lineObj);
    var preparedMeasure = prepareMeasureForLine(cm, lineObj);
    // When directly calling `measureCharPrepared`, we have to adjust
    // for the widgets at this line.
    var widgetHeight = widgetTopHeight(lineObj);
    var begin = 0, end = lineObj.text.length, ltr = true;

    var order = getOrder(lineObj, cm.doc.direction);
    // If the line isn't plain left-to-right text, first figure out
    // which bidi section the coordinates fall into.
    if (order) {
      var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart)
                   (cm, lineObj, lineNo, preparedMeasure, order, x, y);
      ltr = part.level != 1;
      // The awkward -1 offsets are needed because findFirst (called
      // on these below) will treat its first bound as inclusive,
      // second as exclusive, but we want to actually address the
      // characters in the part's range
      begin = ltr ? part.from : part.to - 1;
      end = ltr ? part.to : part.from - 1;
    }

    // A binary search to find the first character whose bounding box
    // starts after the coordinates. If we run across any whose box wrap
    // the coordinates, store that.
    var chAround = null, boxAround = null;
    var ch = findFirst(function (ch) {
      var box = measureCharPrepared(cm, preparedMeasure, ch);
      box.top += widgetHeight; box.bottom += widgetHeight;
      if (!boxIsAfter(box, x, y, false)) { return false }
      if (box.top <= y && box.left <= x) {
        chAround = ch;
        boxAround = box;
      }
      return true
    }, begin, end);

    var baseX, sticky, outside = false;
    // If a box around the coordinates was found, use that
    if (boxAround) {
      // Distinguish coordinates nearer to the left or right side of the box
      var atLeft = x - boxAround.left < boxAround.right - x, atStart = atLeft == ltr;
      ch = chAround + (atStart ? 0 : 1);
      sticky = atStart ? "after" : "before";
      baseX = atLeft ? boxAround.left : boxAround.right;
    } else {
      // (Adjust for extended bound, if necessary.)
      if (!ltr && (ch == end || ch == begin)) { ch++; }
      // To determine which side to associate with, get the box to the
      // left of the character and compare it's vertical position to the
      // coordinates
      sticky = ch == 0 ? "after" : ch == lineObj.text.length ? "before" :
        (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight <= y) == ltr ?
        "after" : "before";
      // Now get accurate coordinates for this place, in order to get a
      // base X position
      var coords = cursorCoords(cm, Pos(lineNo, ch, sticky), "line", lineObj, preparedMeasure);
      baseX = coords.left;
      outside = y < coords.top ? -1 : y >= coords.bottom ? 1 : 0;
    }

    ch = skipExtendingChars(lineObj.text, ch, 1);
    return PosWithInfo(lineNo, ch, sticky, outside, x - baseX)
  }

  function coordsBidiPart(cm, lineObj, lineNo, preparedMeasure, order, x, y) {
    // Bidi parts are sorted left-to-right, and in a non-line-wrapping
    // situation, we can take this ordering to correspond to the visual
    // ordering. This finds the first part whose end is after the given
    // coordinates.
    var index = findFirst(function (i) {
      var part = order[i], ltr = part.level != 1;
      return boxIsAfter(cursorCoords(cm, Pos(lineNo, ltr ? part.to : part.from, ltr ? "before" : "after"),
                                     "line", lineObj, preparedMeasure), x, y, true)
    }, 0, order.length - 1);
    var part = order[index];
    // If this isn't the first part, the part's start is also after
    // the coordinates, and the coordinates aren't on the same line as
    // that start, move one part back.
    if (index > 0) {
      var ltr = part.level != 1;
      var start = cursorCoords(cm, Pos(lineNo, ltr ? part.from : part.to, ltr ? "after" : "before"),
                               "line", lineObj, preparedMeasure);
      if (boxIsAfter(start, x, y, true) && start.top > y)
        { part = order[index - 1]; }
    }
    return part
  }

  function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) {
    // In a wrapped line, rtl text on wrapping boundaries can do things
    // that don't correspond to the ordering in our `order` array at
    // all, so a binary search doesn't work, and we want to return a
    // part that only spans one line so that the binary search in
    // coordsCharInner is safe. As such, we first find the extent of the
    // wrapped line, and then do a flat search in which we discard any
    // spans that aren't on the line.
    var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y);
    var begin = ref.begin;
    var end = ref.end;
    if (/\s/.test(lineObj.text.charAt(end - 1))) { end--; }
    var part = null, closestDist = null;
    for (var i = 0; i < order.length; i++) {
      var p = order[i];
      if (p.from >= end || p.to <= begin) { continue }
      var ltr = p.level != 1;
      var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right;
      // Weigh against spans ending before this, so that they are only
      // picked if nothing ends after
      var dist = endX < x ? x - endX + 1e9 : endX - x;
      if (!part || closestDist > dist) {
        part = p;
        closestDist = dist;
      }
    }
    if (!part) { part = order[order.length - 1]; }
    // Clip the part to the wrapped line.
    if (part.from < begin) { part = {from: begin, to: part.to, level: part.level}; }
    if (part.to > end) { part = {from: part.from, to: end, level: part.level}; }
    return part
  }

  var measureText;
  // Compute the default text height.
  function textHeight(display) {
    if (display.cachedTextHeight != null) { return display.cachedTextHeight }
    if (measureText == null) {
      measureText = elt("pre", null, "CodeMirror-line-like");
      // Measure a bunch of lines, for browsers that compute
      // fractional heights.
      for (var i = 0; i < 49; ++i) {
        measureText.appendChild(document.createTextNode("x"));
        measureText.appendChild(elt("br"));
      }
      measureText.appendChild(document.createTextNode("x"));
    }
    removeChildrenAndAdd(display.measure, measureText);
    var height = measureText.offsetHeight / 50;
    if (height > 3) { display.cachedTextHeight = height; }
    removeChildren(display.measure);
    return height || 1
  }

  // Compute the default character width.
  function charWidth(display) {
    if (display.cachedCharWidth != null) { return display.cachedCharWidth }
    var anchor = elt("span", "xxxxxxxxxx");
    var pre = elt("pre", [anchor], "CodeMirror-line-like");
    removeChildrenAndAdd(display.measure, pre);
    var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;
    if (width > 2) { display.cachedCharWidth = width; }
    return width || 10
  }

  // Do a bulk-read of the DOM positions and sizes needed to draw the
  // view, so that we don't interleave reading and writing to the DOM.
  function getDimensions(cm) {
    var d = cm.display, left = {}, width = {};
    var gutterLeft = d.gutters.clientLeft;
    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
      var id = cm.display.gutterSpecs[i].className;
      left[id] = n.offsetLeft + n.clientLeft + gutterLeft;
      width[id] = n.clientWidth;
    }
    return {fixedPos: compensateForHScroll(d),
            gutterTotalWidth: d.gutters.offsetWidth,
            gutterLeft: left,
            gutterWidth: width,
            wrapperWidth: d.wrapper.clientWidth}
  }

  // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
  // but using getBoundingClientRect to get a sub-pixel-accurate
  // result.
  function compensateForHScroll(display) {
    return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left
  }

  // Returns a function that estimates the height of a line, to use as
  // first approximation until the line becomes visible (and is thus
  // properly measurable).
  function estimateHeight(cm) {
    var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
    var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
    return function (line) {
      if (lineIsHidden(cm.doc, line)) { return 0 }

      var widgetsHeight = 0;
      if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) {
        if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height; }
      } }

      if (wrapping)
        { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th }
      else
        { return widgetsHeight + th }
    }
  }

  function estimateLineHeights(cm) {
    var doc = cm.doc, est = estimateHeight(cm);
    doc.iter(function (line) {
      var estHeight = est(line);
      if (estHeight != line.height) { updateLineHeight(line, estHeight); }
    });
  }

  // Given a mouse event, find the corresponding position. If liberal
  // is false, it checks whether a gutter or scrollbar was clicked,
  // and returns null if it was. forRect is used by rectangular
  // selections, and tries to estimate a character position even for
  // coordinates beyond the right of the text.
  function posFromMouse(cm, e, liberal, forRect) {
    var display = cm.display;
    if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") { return null }

    var x, y, space = display.lineSpace.getBoundingClientRect();
    // Fails unpredictably on IE[67] when mouse is dragged around quickly.
    try { x = e.clientX - space.left; y = e.clientY - space.top; }
    catch (e$1) { return null }
    var coords = coordsChar(cm, x, y), line;
    if (forRect && coords.xRel > 0 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
      var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
      coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
    }
    return coords
  }

  // Find the view element corresponding to a given line. Return null
  // when the line isn't visible.
  function findViewIndex(cm, n) {
    if (n >= cm.display.viewTo) { return null }
    n -= cm.display.viewFrom;
    if (n < 0) { return null }
    var view = cm.display.view;
    for (var i = 0; i < view.length; i++) {
      n -= view[i].size;
      if (n < 0) { return i }
    }
  }

  // Updates the display.view data structure for a given change to the
  // document. From and to are in pre-change coordinates. Lendiff is
  // the amount of lines added or subtracted by the change. This is
  // used for changes that span multiple lines, or change the way
  // lines are divided into visual lines. regLineChange (below)
  // registers single-line changes.
  function regChange(cm, from, to, lendiff) {
    if (from == null) { from = cm.doc.first; }
    if (to == null) { to = cm.doc.first + cm.doc.size; }
    if (!lendiff) { lendiff = 0; }

    var display = cm.display;
    if (lendiff && to < display.viewTo &&
        (display.updateLineNumbers == null || display.updateLineNumbers > from))
      { display.updateLineNumbers = from; }

    cm.curOp.viewChanged = true;

    if (from >= display.viewTo) { // Change after
      if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
        { resetView(cm); }
    } else if (to <= display.viewFrom) { // Change before
      if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
        resetView(cm);
      } else {
        display.viewFrom += lendiff;
        display.viewTo += lendiff;
      }
    } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
      resetView(cm);
    } else if (from <= display.viewFrom) { // Top overlap
      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
      if (cut) {
        display.view = display.view.slice(cut.index);
        display.viewFrom = cut.lineN;
        display.viewTo += lendiff;
      } else {
        resetView(cm);
      }
    } else if (to >= display.viewTo) { // Bottom overlap
      var cut$1 = viewCuttingPoint(cm, from, from, -1);
      if (cut$1) {
        display.view = display.view.slice(0, cut$1.index);
        display.viewTo = cut$1.lineN;
      } else {
        resetView(cm);
      }
    } else { // Gap in the middle
      var cutTop = viewCuttingPoint(cm, from, from, -1);
      var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
      if (cutTop && cutBot) {
        display.view = display.view.slice(0, cutTop.index)
          .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
          .concat(display.view.slice(cutBot.index));
        display.viewTo += lendiff;
      } else {
        resetView(cm);
      }
    }

    var ext = display.externalMeasured;
    if (ext) {
      if (to < ext.lineN)
        { ext.lineN += lendiff; }
      else if (from < ext.lineN + ext.size)
        { display.externalMeasured = null; }
    }
  }

  // Register a change to a single line. Type must be one of "text",
  // "gutter", "class", "widget"
  function regLineChange(cm, line, type) {
    cm.curOp.viewChanged = true;
    var display = cm.display, ext = cm.display.externalMeasured;
    if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
      { display.externalMeasured = null; }

    if (line < display.viewFrom || line >= display.viewTo) { return }
    var lineView = display.view[findViewIndex(cm, line)];
    if (lineView.node == null) { return }
    var arr = lineView.changes || (lineView.changes = []);
    if (indexOf(arr, type) == -1) { arr.push(type); }
  }

  // Clear the view.
  function resetView(cm) {
    cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
    cm.display.view = [];
    cm.display.viewOffset = 0;
  }

  function viewCuttingPoint(cm, oldN, newN, dir) {
    var index = findViewIndex(cm, oldN), diff, view = cm.display.view;
    if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)
      { return {index: index, lineN: newN} }
    var n = cm.display.viewFrom;
    for (var i = 0; i < index; i++)
      { n += view[i].size; }
    if (n != oldN) {
      if (dir > 0) {
        if (index == view.length - 1) { return null }
        diff = (n + view[index].size) - oldN;
        index++;
      } else {
        diff = n - oldN;
      }
      oldN += diff; newN += diff;
    }
    while (visualLineNo(cm.doc, newN) != newN) {
      if (index == (dir < 0 ? 0 : view.length - 1)) { return null }
      newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
      index += dir;
    }
    return {index: index, lineN: newN}
  }

  // Force the view to cover a given range, adding empty view element
  // or clipping off existing ones as needed.
  function adjustView(cm, from, to) {
    var display = cm.display, view = display.view;
    if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
      display.view = buildViewArray(cm, from, to);
      display.viewFrom = from;
    } else {
      if (display.viewFrom > from)
        { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view); }
      else if (display.viewFrom < from)
        { display.view = display.view.slice(findViewIndex(cm, from)); }
      display.viewFrom = from;
      if (display.viewTo < to)
        { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)); }
      else if (display.viewTo > to)
        { display.view = display.view.slice(0, findViewIndex(cm, to)); }
    }
    display.viewTo = to;
  }

  // Count the number of lines in the view whose DOM representation is
  // out of date (or nonexistent).
  function countDirtyView(cm) {
    var view = cm.display.view, dirty = 0;
    for (var i = 0; i < view.length; i++) {
      var lineView = view[i];
      if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty; }
    }
    return dirty
  }

  function updateSelection(cm) {
    cm.display.input.showSelection(cm.display.input.prepareSelection());
  }

  function prepareSelection(cm, primary) {
    if ( primary === void 0 ) primary = true;

    var doc = cm.doc, result = {};
    var curFragment = result.cursors = document.createDocumentFragment();
    var selFragment = result.selection = document.createDocumentFragment();

    var customCursor = cm.options.$customCursor;
    if (customCursor) { primary = true; }
    for (var i = 0; i < doc.sel.ranges.length; i++) {
      if (!primary && i == doc.sel.primIndex) { continue }
      var range = doc.sel.ranges[i];
      if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) { continue }
      var collapsed = range.empty();
      if (customCursor) {
        var head = customCursor(cm, range);
        if (head) { drawSelectionCursor(cm, head, curFragment); }
      } else if (collapsed || cm.options.showCursorWhenSelecting) {
        drawSelectionCursor(cm, range.head, curFragment);
      }
      if (!collapsed)
        { drawSelectionRange(cm, range, selFragment); }
    }
    return result
  }

  // Draws a cursor for the given range
  function drawSelectionCursor(cm, head, output) {
    var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine);

    var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
    cursor.style.left = pos.left + "px";
    cursor.style.top = pos.top + "px";
    cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";

    if (/\bcm-fat-cursor\b/.test(cm.getWrapperElement().className)) {
      var charPos = charCoords(cm, head, "div", null, null);
      var width = charPos.right - charPos.left;
      cursor.style.width = (width > 0 ? width : cm.defaultCharWidth()) + "px";
    }

    if (pos.other) {
      // Secondary cursor, shown when on a 'jump' in bi-directional text
      var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
      otherCursor.style.display = "";
      otherCursor.style.left = pos.other.left + "px";
      otherCursor.style.top = pos.other.top + "px";
      otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
    }
  }

  function cmpCoords(a, b) { return a.top - b.top || a.left - b.left }

  // Draws the given range as a highlighted selection
  function drawSelectionRange(cm, range, output) {
    var display = cm.display, doc = cm.doc;
    var fragment = document.createDocumentFragment();
    var padding = paddingH(cm.display), leftSide = padding.left;
    var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;
    var docLTR = doc.direction == "ltr";

    function add(left, top, width, bottom) {
      if (top < 0) { top = 0; }
      top = Math.round(top);
      bottom = Math.round(bottom);
      fragment.appendChild(elt("div", null, "CodeMirror-selected", ("position: absolute; left: " + left + "px;\n                             top: " + top + "px; width: " + (width == null ? rightSide - left : width) + "px;\n                             height: " + (bottom - top) + "px")));
    }

    function drawForLine(line, fromArg, toArg) {
      var lineObj = getLine(doc, line);
      var lineLen = lineObj.text.length;
      var start, end;
      function coords(ch, bias) {
        return charCoords(cm, Pos(line, ch), "div", lineObj, bias)
      }

      function wrapX(pos, dir, side) {
        var extent = wrappedLineExtentChar(cm, lineObj, null, pos);
        var prop = (dir == "ltr") == (side == "after") ? "left" : "right";
        var ch = side == "after" ? extent.begin : extent.end - (/\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1);
        return coords(ch, prop)[prop]
      }

      var order = getOrder(lineObj, doc.direction);
      iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) {
        var ltr = dir == "ltr";
        var fromPos = coords(from, ltr ? "left" : "right");
        var toPos = coords(to - 1, ltr ? "right" : "left");

        var openStart = fromArg == null && from == 0, openEnd = toArg == null && to == lineLen;
        var first = i == 0, last = !order || i == order.length - 1;
        if (toPos.top - fromPos.top <= 3) { // Single line
          var openLeft = (docLTR ? openStart : openEnd) && first;
          var openRight = (docLTR ? openEnd : openStart) && last;
          var left = openLeft ? leftSide : (ltr ? fromPos : toPos).left;
          var right = openRight ? rightSide : (ltr ? toPos : fromPos).right;
          add(left, fromPos.top, right - left, fromPos.bottom);
        } else { // Multiple lines
          var topLeft, topRight, botLeft, botRight;
          if (ltr) {
            topLeft = docLTR && openStart && first ? leftSide : fromPos.left;
            topRight = docLTR ? rightSide : wrapX(from, dir, "before");
            botLeft = docLTR ? leftSide : wrapX(to, dir, "after");
            botRight = docLTR && openEnd && last ? rightSide : toPos.right;
          } else {
            topLeft = !docLTR ? leftSide : wrapX(from, dir, "before");
            topRight = !docLTR && openStart && first ? rightSide : fromPos.right;
            botLeft = !docLTR && openEnd && last ? leftSide : toPos.left;
            botRight = !docLTR ? rightSide : wrapX(to, dir, "after");
          }
          add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom);
          if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top); }
          add(botLeft, toPos.top, botRight - botLeft, toPos.bottom);
        }

        if (!start || cmpCoords(fromPos, start) < 0) { start = fromPos; }
        if (cmpCoords(toPos, start) < 0) { start = toPos; }
        if (!end || cmpCoords(fromPos, end) < 0) { end = fromPos; }
        if (cmpCoords(toPos, end) < 0) { end = toPos; }
      });
      return {start: start, end: end}
    }

    var sFrom = range.from(), sTo = range.to();
    if (sFrom.line == sTo.line) {
      drawForLine(sFrom.line, sFrom.ch, sTo.ch);
    } else {
      var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
      var singleVLine = visualLine(fromLine) == visualLine(toLine);
      var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
      var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
      if (singleVLine) {
        if (leftEnd.top < rightStart.top - 2) {
          add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
          add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
        } else {
          add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
        }
      }
      if (leftEnd.bottom < rightStart.top)
        { add(leftSide, leftEnd.bottom, null, rightStart.top); }
    }

    output.appendChild(fragment);
  }

  // Cursor-blinking
  function restartBlink(cm) {
    if (!cm.state.focused) { return }
    var display = cm.display;
    clearInterval(display.blinker);
    var on = true;
    display.cursorDiv.style.visibility = "";
    if (cm.options.cursorBlinkRate > 0)
      { display.blinker = setInterval(function () {
        if (!cm.hasFocus()) { onBlur(cm); }
        display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
      }, cm.options.cursorBlinkRate); }
    else if (cm.options.cursorBlinkRate < 0)
      { display.cursorDiv.style.visibility = "hidden"; }
  }

  function ensureFocus(cm) {
    if (!cm.hasFocus()) {
      cm.display.input.focus();
      if (!cm.state.focused) { onFocus(cm); }
    }
  }

  function delayBlurEvent(cm) {
    cm.state.delayingBlurEvent = true;
    setTimeout(function () { if (cm.state.delayingBlurEvent) {
      cm.state.delayingBlurEvent = false;
      if (cm.state.focused) { onBlur(cm); }
    } }, 100);
  }

  function onFocus(cm, e) {
    if (cm.state.delayingBlurEvent && !cm.state.draggingText) { cm.state.delayingBlurEvent = false; }

    if (cm.options.readOnly == "nocursor") { return }
    if (!cm.state.focused) {
      signal(cm, "focus", cm, e);
      cm.state.focused = true;
      addClass(cm.display.wrapper, "CodeMirror-focused");
      // This test prevents this from firing when a context
      // menu is closed (since the input reset would kill the
      // select-all detection hack)
      if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
        cm.display.input.reset();
        if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20); } // Issue #1730
      }
      cm.display.input.receivedFocus();
    }
    restartBlink(cm);
  }
  function onBlur(cm, e) {
    if (cm.state.delayingBlurEvent) { return }

    if (cm.state.focused) {
      signal(cm, "blur", cm, e);
      cm.state.focused = false;
      rmClass(cm.display.wrapper, "CodeMirror-focused");
    }
    clearInterval(cm.display.blinker);
    setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false; } }, 150);
  }

  // Read the actual heights of the rendered lines, and update their
  // stored heights to match.
  function updateHeightsInViewport(cm) {
    var display = cm.display;
    var prevBottom = display.lineDiv.offsetTop;
    var viewTop = Math.max(0, display.scroller.getBoundingClientRect().top);
    var oldHeight = display.lineDiv.getBoundingClientRect().top;
    var mustScroll = 0;
    for (var i = 0; i < display.view.length; i++) {
      var cur = display.view[i], wrapping = cm.options.lineWrapping;
      var height = (void 0), width = 0;
      if (cur.hidden) { continue }
      oldHeight += cur.line.height;
      if (ie && ie_version < 8) {
        var bot = cur.node.offsetTop + cur.node.offsetHeight;
        height = bot - prevBottom;
        prevBottom = bot;
      } else {
        var box = cur.node.getBoundingClientRect();
        height = box.bottom - box.top;
        // Check that lines don't extend past the right of the current
        // editor width
        if (!wrapping && cur.text.firstChild)
          { width = cur.text.firstChild.getBoundingClientRect().right - box.left - 1; }
      }
      var diff = cur.line.height - height;
      if (diff > .005 || diff < -.005) {
        if (oldHeight < viewTop) { mustScroll -= diff; }
        updateLineHeight(cur.line, height);
        updateWidgetHeight(cur.line);
        if (cur.rest) { for (var j = 0; j < cur.rest.length; j++)
          { updateWidgetHeight(cur.rest[j]); } }
      }
      if (width > cm.display.sizerWidth) {
        var chWidth = Math.ceil(width / charWidth(cm.display));
        if (chWidth > cm.display.maxLineLength) {
          cm.display.maxLineLength = chWidth;
          cm.display.maxLine = cur.line;
          cm.display.maxLineChanged = true;
        }
      }
    }
    if (Math.abs(mustScroll) > 2) { display.scroller.scrollTop += mustScroll; }
  }

  // Read and store the height of line widgets associated with the
  // given line.
  function updateWidgetHeight(line) {
    if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) {
      var w = line.widgets[i], parent = w.node.parentNode;
      if (parent) { w.height = parent.offsetHeight; }
    } }
  }

  // Compute the lines that are visible in a given viewport (defaults
  // the the current scroll position). viewport may contain top,
  // height, and ensure (see op.scrollToPos) properties.
  function visibleLines(display, doc, viewport) {
    var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;
    top = Math.floor(top - paddingTop(display));
    var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;

    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
    // forces those lines into the viewport (if possible).
    if (viewport && viewport.ensure) {
      var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;
      if (ensureFrom < from) {
        from = ensureFrom;
        to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);
      } else if (Math.min(ensureTo, doc.lastLine()) >= to) {
        from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);
        to = ensureTo;
      }
    }
    return {from: from, to: Math.max(to, from + 1)}
  }

  // SCROLLING THINGS INTO VIEW

  // If an editor sits on the top or bottom of the window, partially
  // scrolled out of view, this ensures that the cursor is visible.
  function maybeScrollWindow(cm, rect) {
    if (signalDOMEvent(cm, "scrollCursorIntoView")) { return }

    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
    var doc = display.wrapper.ownerDocument;
    if (rect.top + box.top < 0) { doScroll = true; }
    else if (rect.bottom + box.top > (doc.defaultView.innerHeight || doc.documentElement.clientHeight)) { doScroll = false; }
    if (doScroll != null && !phantom) {
      var scrollNode = elt("div", "\u200b", null, ("position: absolute;\n                         top: " + (rect.top - display.viewOffset - paddingTop(cm.display)) + "px;\n                         height: " + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + "px;\n                         left: " + (rect.left) + "px; width: " + (Math.max(2, rect.right - rect.left)) + "px;"));
      cm.display.lineSpace.appendChild(scrollNode);
      scrollNode.scrollIntoView(doScroll);
      cm.display.lineSpace.removeChild(scrollNode);
    }
  }

  // Scroll a given position into view (immediately), verifying that
  // it actually became visible (as line heights are accurately
  // measured, the position of something may 'drift' during drawing).
  function scrollPosIntoView(cm, pos, end, margin) {
    if (margin == null) { margin = 0; }
    var rect;
    if (!cm.options.lineWrapping && pos == end) {
      // Set pos and end to the cursor positions around the character pos sticks to
      // If pos.sticky == "before", that is around pos.ch - 1, otherwise around pos.ch
      // If pos == Pos(_, 0, "before"), pos and end are unchanged
      end = pos.sticky == "before" ? Pos(pos.line, pos.ch + 1, "before") : pos;
      pos = pos.ch ? Pos(pos.line, pos.sticky == "before" ? pos.ch - 1 : pos.ch, "after") : pos;
    }
    for (var limit = 0; limit < 5; limit++) {
      var changed = false;
      var coords = cursorCoords(cm, pos);
      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
      rect = {left: Math.min(coords.left, endCoords.left),
              top: Math.min(coords.top, endCoords.top) - margin,
              right: Math.max(coords.left, endCoords.left),
              bottom: Math.max(coords.bottom, endCoords.bottom) + margin};
      var scrollPos = calculateScrollPos(cm, rect);
      var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
      if (scrollPos.scrollTop != null) {
        updateScrollTop(cm, scrollPos.scrollTop);
        if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true; }
      }
      if (scrollPos.scrollLeft != null) {
        setScrollLeft(cm, scrollPos.scrollLeft);
        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true; }
      }
      if (!changed) { break }
    }
    return rect
  }

  // Scroll a given set of coordinates into view (immediately).
  function scrollIntoView(cm, rect) {
    var scrollPos = calculateScrollPos(cm, rect);
    if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop); }
    if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft); }
  }

  // Calculate a new scroll position needed to scroll the given
  // rectangle into view. Returns an object with scrollTop and
  // scrollLeft properties. When these are undefined, the
  // vertical/horizontal position does not need to be adjusted.
  function calculateScrollPos(cm, rect) {
    var display = cm.display, snapMargin = textHeight(cm.display);
    if (rect.top < 0) { rect.top = 0; }
    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
    var screen = displayHeight(cm), result = {};
    if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen; }
    var docBottom = cm.doc.height + paddingVert(display);
    var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin;
    if (rect.top < screentop) {
      result.scrollTop = atTop ? 0 : rect.top;
    } else if (rect.bottom > screentop + screen) {
      var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen);
      if (newTop != screentop) { result.scrollTop = newTop; }
    }

    var gutterSpace = cm.options.fixedGutter ? 0 : display.gutters.offsetWidth;
    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft - gutterSpace;
    var screenw = displayWidth(cm) - display.gutters.offsetWidth;
    var tooWide = rect.right - rect.left > screenw;
    if (tooWide) { rect.right = rect.left + screenw; }
    if (rect.left < 10)
      { result.scrollLeft = 0; }
    else if (rect.left < screenleft)
      { result.scrollLeft = Math.max(0, rect.left + gutterSpace - (tooWide ? 0 : 10)); }
    else if (rect.right > screenw + screenleft - 3)
      { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw; }
    return result
  }

  // Store a relative adjustment to the scroll position in the current
  // operation (to be applied when the operation finishes).
  function addToScrollTop(cm, top) {
    if (top == null) { return }
    resolveScrollToPos(cm);
    cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
  }

  // Make sure that at the end of the operation the current cursor is
  // shown.
  function ensureCursorVisible(cm) {
    resolveScrollToPos(cm);
    var cur = cm.getCursor();
    cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin};
  }

  function scrollToCoords(cm, x, y) {
    if (x != null || y != null) { resolveScrollToPos(cm); }
    if (x != null) { cm.curOp.scrollLeft = x; }
    if (y != null) { cm.curOp.scrollTop = y; }
  }

  function scrollToRange(cm, range) {
    resolveScrollToPos(cm);
    cm.curOp.scrollToPos = range;
  }

  // When an operation has its scrollToPos property set, and another
  // scroll action is applied before the end of the operation, this
  // 'simulates' scrolling that position into view in a cheap way, so
  // that the effect of intermediate scroll commands is not ignored.
  function resolveScrollToPos(cm) {
    var range = cm.curOp.scrollToPos;
    if (range) {
      cm.curOp.scrollToPos = null;
      var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);
      scrollToCoordsRange(cm, from, to, range.margin);
    }
  }

  function scrollToCoordsRange(cm, from, to, margin) {
    var sPos = calculateScrollPos(cm, {
      left: Math.min(from.left, to.left),
      top: Math.min(from.top, to.top) - margin,
      right: Math.max(from.right, to.right),
      bottom: Math.max(from.bottom, to.bottom) + margin
    });
    scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop);
  }

  // Sync the scrollable area and scrollbars, ensure the viewport
  // covers the visible area.
  function updateScrollTop(cm, val) {
    if (Math.abs(cm.doc.scrollTop - val) < 2) { return }
    if (!gecko) { updateDisplaySimple(cm, {top: val}); }
    setScrollTop(cm, val, true);
    if (gecko) { updateDisplaySimple(cm); }
    startWorker(cm, 100);
  }

  function setScrollTop(cm, val, forceScroll) {
    val = Math.max(0, Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val));
    if (cm.display.scroller.scrollTop == val && !forceScroll) { return }
    cm.doc.scrollTop = val;
    cm.display.scrollbars.setScrollTop(val);
    if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val; }
  }

  // Sync scroller and scrollbar, ensure the gutter elements are
  // aligned.
  function setScrollLeft(cm, val, isScroller, forceScroll) {
    val = Math.max(0, Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth));
    if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return }
    cm.doc.scrollLeft = val;
    alignHorizontally(cm);
    if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val; }
    cm.display.scrollbars.setScrollLeft(val);
  }

  // SCROLLBARS

  // Prepare DOM reads needed to update the scrollbars. Done in one
  // shot to minimize update/measure roundtrips.
  function measureForScrollbars(cm) {
    var d = cm.display, gutterW = d.gutters.offsetWidth;
    var docH = Math.round(cm.doc.height + paddingVert(cm.display));
    return {
      clientHeight: d.scroller.clientHeight,
      viewHeight: d.wrapper.clientHeight,
      scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,
      viewWidth: d.wrapper.clientWidth,
      barLeft: cm.options.fixedGutter ? gutterW : 0,
      docHeight: docH,
      scrollHeight: docH + scrollGap(cm) + d.barHeight,
      nativeBarWidth: d.nativeBarWidth,
      gutterWidth: gutterW
    }
  }

  var NativeScrollbars = function(place, scroll, cm) {
    this.cm = cm;
    var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
    var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
    vert.tabIndex = horiz.tabIndex = -1;
    place(vert); place(horiz);

    on(vert, "scroll", function () {
      if (vert.clientHeight) { scroll(vert.scrollTop, "vertical"); }
    });
    on(horiz, "scroll", function () {
      if (horiz.clientWidth) { scroll(horiz.scrollLeft, "horizontal"); }
    });

    this.checkedZeroWidth = false;
    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
    if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = "18px"; }
  };

  NativeScrollbars.prototype.update = function (measure) {
    var needsH = measure.scrollWidth > measure.clientWidth + 1;
    var needsV = measure.scrollHeight > measure.clientHeight + 1;
    var sWidth = measure.nativeBarWidth;

    if (needsV) {
      this.vert.style.display = "block";
      this.vert.style.bottom = needsH ? sWidth + "px" : "0";
      var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);
      // A bug in IE8 can cause this value to be negative, so guard it.
      this.vert.firstChild.style.height =
        Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px";
    } else {
      this.vert.scrollTop = 0;
      this.vert.style.display = "";
      this.vert.firstChild.style.height = "0";
    }

    if (needsH) {
      this.horiz.style.display = "block";
      this.horiz.style.right = needsV ? sWidth + "px" : "0";
      this.horiz.style.left = measure.barLeft + "px";
      var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);
      this.horiz.firstChild.style.width =
        Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + "px";
    } else {
      this.horiz.style.display = "";
      this.horiz.firstChild.style.width = "0";
    }

    if (!this.checkedZeroWidth && measure.clientHeight > 0) {
      if (sWidth == 0) { this.zeroWidthHack(); }
      this.checkedZeroWidth = true;
    }

    return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0}
  };

  NativeScrollbars.prototype.setScrollLeft = function (pos) {
    if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos; }
    if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, "horiz"); }
  };

  NativeScrollbars.prototype.setScrollTop = function (pos) {
    if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos; }
    if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, "vert"); }
  };

  NativeScrollbars.prototype.zeroWidthHack = function () {
    var w = mac && !mac_geMountainLion ? "12px" : "18px";
    this.horiz.style.height = this.vert.style.width = w;
    this.horiz.style.visibility = this.vert.style.visibility = "hidden";
    this.disableHoriz = new Delayed;
    this.disableVert = new Delayed;
  };

  NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) {
    bar.style.visibility = "";
    function maybeDisable() {
      // To find out whether the scrollbar is still visible, we
      // check whether the element under the pixel in the bottom
      // right corner of the scrollbar box is the scrollbar box
      // itself (when the bar is still visible) or its filler child
      // (when the bar is hidden). If it is still visible, we keep
      // it enabled, if it's hidden, we disable pointer events.
      var box = bar.getBoundingClientRect();
      var elt = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2)
          : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1);
      if (elt != bar) { bar.style.visibility = "hidden"; }
      else { delay.set(1000, maybeDisable); }
    }
    delay.set(1000, maybeDisable);
  };

  NativeScrollbars.prototype.clear = function () {
    var parent = this.horiz.parentNode;
    parent.removeChild(this.horiz);
    parent.removeChild(this.vert);
  };

  var NullScrollbars = function () {};

  NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} };
  NullScrollbars.prototype.setScrollLeft = function () {};
  NullScrollbars.prototype.setScrollTop = function () {};
  NullScrollbars.prototype.clear = function () {};

  function updateScrollbars(cm, measure) {
    if (!measure) { measure = measureForScrollbars(cm); }
    var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;
    updateScrollbarsInner(cm, measure);
    for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {
      if (startWidth != cm.display.barWidth && cm.options.lineWrapping)
        { updateHeightsInViewport(cm); }
      updateScrollbarsInner(cm, measureForScrollbars(cm));
      startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;
    }
  }

  // Re-synchronize the fake scrollbars with the actual size of the
  // content.
  function updateScrollbarsInner(cm, measure) {
    var d = cm.display;
    var sizes = d.scrollbars.update(measure);

    d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px";
    d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px";
    d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent";

    if (sizes.right && sizes.bottom) {
      d.scrollbarFiller.style.display = "block";
      d.scrollbarFiller.style.height = sizes.bottom + "px";
      d.scrollbarFiller.style.width = sizes.right + "px";
    } else { d.scrollbarFiller.style.display = ""; }
    if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
      d.gutterFiller.style.display = "block";
      d.gutterFiller.style.height = sizes.bottom + "px";
      d.gutterFiller.style.width = measure.gutterWidth + "px";
    } else { d.gutterFiller.style.display = ""; }
  }

  var scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars};

  function initScrollbars(cm) {
    if (cm.display.scrollbars) {
      cm.display.scrollbars.clear();
      if (cm.display.scrollbars.addClass)
        { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass); }
    }

    cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) {
      cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);
      // Prevent clicks in the scrollbars from killing focus
      on(node, "mousedown", function () {
        if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0); }
      });
      node.setAttribute("cm-not-content", "true");
    }, function (pos, axis) {
      if (axis == "horizontal") { setScrollLeft(cm, pos); }
      else { updateScrollTop(cm, pos); }
    }, cm);
    if (cm.display.scrollbars.addClass)
      { addClass(cm.display.wrapper, cm.display.scrollbars.addClass); }
  }

  // Operations are used to wrap a series of changes to the editor
  // state in such a way that each change won't have to update the
  // cursor and display (which would be awkward, slow, and
  // error-prone). Instead, display updates are batched and then all
  // combined and executed at once.

  var nextOpId = 0;
  // Start a new operation.
  function startOperation(cm) {
    cm.curOp = {
      cm: cm,
      viewChanged: false,      // Flag that indicates that lines might need to be redrawn
      startHeight: cm.doc.height, // Used to detect need to update scrollbar
      forceUpdate: false,      // Used to force a redraw
      updateInput: 0,       // Whether to reset the input textarea
      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
      changeObjs: null,        // Accumulated changes, for firing change events
      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
      cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
      selectionChanged: false, // Whether the selection needs to be redrawn
      updateMaxLine: false,    // Set when the widest line needs to be determined anew
      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
      scrollToPos: null,       // Used to scroll to a specific position
      focus: false,
      id: ++nextOpId,          // Unique ID
      markArrays: null         // Used by addMarkedSpan
    };
    pushOperation(cm.curOp);
  }

  // Finish an operation, updating the display and signalling delayed events
  function endOperation(cm) {
    var op = cm.curOp;
    if (op) { finishOperation(op, function (group) {
      for (var i = 0; i < group.ops.length; i++)
        { group.ops[i].cm.curOp = null; }
      endOperations(group);
    }); }
  }

  // The DOM updates done when an operation finishes are batched so
  // that the minimum number of relayouts are required.
  function endOperations(group) {
    var ops = group.ops;
    for (var i = 0; i < ops.length; i++) // Read DOM
      { endOperation_R1(ops[i]); }
    for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe)
      { endOperation_W1(ops[i$1]); }
    for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM
      { endOperation_R2(ops[i$2]); }
    for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe)
      { endOperation_W2(ops[i$3]); }
    for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM
      { endOperation_finish(ops[i$4]); }
  }

  function endOperation_R1(op) {
    var cm = op.cm, display = cm.display;
    maybeClipScrollbars(cm);
    if (op.updateMaxLine) { findMaxLine(cm); }

    op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||
      op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
                         op.scrollToPos.to.line >= display.viewTo) ||
      display.maxLineChanged && cm.options.lineWrapping;
    op.update = op.mustUpdate &&
      new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
  }

  function endOperation_W1(op) {
    op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);
  }

  function endOperation_R2(op) {
    var cm = op.cm, display = cm.display;
    if (op.updatedDisplay) { updateHeightsInViewport(cm); }

    op.barMeasure = measureForScrollbars(cm);

    // If the max line changed since it was last measured, measure it,
    // and ensure the document's width matches it.
    // updateDisplay_W2 will use these properties to do the actual resizing
    if (display.maxLineChanged && !cm.options.lineWrapping) {
      op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;
      cm.display.sizerWidth = op.adjustWidthTo;
      op.barMeasure.scrollWidth =
        Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);
      op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));
    }

    if (op.updatedDisplay || op.selectionChanged)
      { op.preparedSelection = display.input.prepareSelection(); }
  }

  function endOperation_W2(op) {
    var cm = op.cm;

    if (op.adjustWidthTo != null) {
      cm.display.sizer.style.minWidth = op.adjustWidthTo + "px";
      if (op.maxScrollLeft < cm.doc.scrollLeft)
        { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true); }
      cm.display.maxLineChanged = false;
    }

    var takeFocus = op.focus && op.focus == activeElt(root(cm));
    if (op.preparedSelection)
      { cm.display.input.showSelection(op.preparedSelection, takeFocus); }
    if (op.updatedDisplay || op.startHeight != cm.doc.height)
      { updateScrollbars(cm, op.barMeasure); }
    if (op.updatedDisplay)
      { setDocumentHeight(cm, op.barMeasure); }

    if (op.selectionChanged) { restartBlink(cm); }

    if (cm.state.focused && op.updateInput)
      { cm.display.input.reset(op.typing); }
    if (takeFocus) { ensureFocus(op.cm); }
  }

  function endOperation_finish(op) {
    var cm = op.cm, display = cm.display, doc = cm.doc;

    if (op.updatedDisplay) { postUpdateDisplay(cm, op.update); }

    // Abort mouse wheel delta measurement, when scrolling explicitly
    if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
      { display.wheelStartX = display.wheelStartY = null; }

    // Propagate the scroll position to the actual DOM scroller
    if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll); }

    if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true); }
    // If we need to scroll a specific position into view, do so.
    if (op.scrollToPos) {
      var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
                                   clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);
      maybeScrollWindow(cm, rect);
    }

    // Fire events for markers that are hidden/unidden by editing or
    // undoing
    var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
    if (hidden) { for (var i = 0; i < hidden.length; ++i)
      { if (!hidden[i].lines.length) { signal(hidden[i], "hide"); } } }
    if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1)
      { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], "unhide"); } } }

    if (display.wrapper.offsetHeight)
      { doc.scrollTop = cm.display.scroller.scrollTop; }

    // Fire change events, and delayed event handlers
    if (op.changeObjs)
      { signal(cm, "changes", cm, op.changeObjs); }
    if (op.update)
      { op.update.finish(); }
  }

  // Run the given function in an operation
  function runInOp(cm, f) {
    if (cm.curOp) { return f() }
    startOperation(cm);
    try { return f() }
    finally { endOperation(cm); }
  }
  // Wraps a function in an operation. Returns the wrapped function.
  function operation(cm, f) {
    return function() {
      if (cm.curOp) { return f.apply(cm, arguments) }
      startOperation(cm);
      try { return f.apply(cm, arguments) }
      finally { endOperation(cm); }
    }
  }
  // Used to add methods to editor and doc instances, wrapping them in
  // operations.
  function methodOp(f) {
    return function() {
      if (this.curOp) { return f.apply(this, arguments) }
      startOperation(this);
      try { return f.apply(this, arguments) }
      finally { endOperation(this); }
    }
  }
  function docMethodOp(f) {
    return function() {
      var cm = this.cm;
      if (!cm || cm.curOp) { return f.apply(this, arguments) }
      startOperation(cm);
      try { return f.apply(this, arguments) }
      finally { endOperation(cm); }
    }
  }

  // HIGHLIGHT WORKER

  function startWorker(cm, time) {
    if (cm.doc.highlightFrontier < cm.display.viewTo)
      { cm.state.highlight.set(time, bind(highlightWorker, cm)); }
  }

  function highlightWorker(cm) {
    var doc = cm.doc;
    if (doc.highlightFrontier >= cm.display.viewTo) { return }
    var end = +new Date + cm.options.workTime;
    var context = getContextBefore(cm, doc.highlightFrontier);
    var changedLines = [];

    doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {
      if (context.line >= cm.display.viewFrom) { // Visible
        var oldStyles = line.styles;
        var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null;
        var highlighted = highlightLine(cm, line, context, true);
        if (resetState) { context.state = resetState; }
        line.styles = highlighted.styles;
        var oldCls = line.styleClasses, newCls = highlighted.classes;
        if (newCls) { line.styleClasses = newCls; }
        else if (oldCls) { line.styleClasses = null; }
        var ischange = !oldStyles || oldStyles.length != line.styles.length ||
          oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);
        for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i]; }
        if (ischange) { changedLines.push(context.line); }
        line.stateAfter = context.save();
        context.nextLine();
      } else {
        if (line.text.length <= cm.options.maxHighlightLength)
          { processLine(cm, line.text, context); }
        line.stateAfter = context.line % 5 == 0 ? context.save() : null;
        context.nextLine();
      }
      if (+new Date > end) {
        startWorker(cm, cm.options.workDelay);
        return true
      }
    });
    doc.highlightFrontier = context.line;
    doc.modeFrontier = Math.max(doc.modeFrontier, context.line);
    if (changedLines.length) { runInOp(cm, function () {
      for (var i = 0; i < changedLines.length; i++)
        { regLineChange(cm, changedLines[i], "text"); }
    }); }
  }

  // DISPLAY DRAWING

  var DisplayUpdate = function(cm, viewport, force) {
    var display = cm.display;

    this.viewport = viewport;
    // Store some values that we'll need later (but don't want to force a relayout for)
    this.visible = visibleLines(display, cm.doc, viewport);
    this.editorIsHidden = !display.wrapper.offsetWidth;
    this.wrapperHeight = display.wrapper.clientHeight;
    this.wrapperWidth = display.wrapper.clientWidth;
    this.oldDisplayWidth = displayWidth(cm);
    this.force = force;
    this.dims = getDimensions(cm);
    this.events = [];
  };

  DisplayUpdate.prototype.signal = function (emitter, type) {
    if (hasHandler(emitter, type))
      { this.events.push(arguments); }
  };
  DisplayUpdate.prototype.finish = function () {
    for (var i = 0; i < this.events.length; i++)
      { signal.apply(null, this.events[i]); }
  };

  function maybeClipScrollbars(cm) {
    var display = cm.display;
    if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
      display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;
      display.heightForcer.style.height = scrollGap(cm) + "px";
      display.sizer.style.marginBottom = -display.nativeBarWidth + "px";
      display.sizer.style.borderRightWidth = scrollGap(cm) + "px";
      display.scrollbarsClipped = true;
    }
  }

  function selectionSnapshot(cm) {
    if (cm.hasFocus()) { return null }
    var active = activeElt(root(cm));
    if (!active || !contains(cm.display.lineDiv, active)) { return null }
    var result = {activeElt: active};
    if (window.getSelection) {
      var sel = win(cm).getSelection();
      if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) {
        result.anchorNode = sel.anchorNode;
        result.anchorOffset = sel.anchorOffset;
        result.focusNode = sel.focusNode;
        result.focusOffset = sel.focusOffset;
      }
    }
    return result
  }

  function restoreSelection(snapshot) {
    if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt(rootNode(snapshot.activeElt))) { return }
    snapshot.activeElt.focus();
    if (!/^(INPUT|TEXTAREA)$/.test(snapshot.activeElt.nodeName) &&
        snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) {
      var doc = snapshot.activeElt.ownerDocument;
      var sel = doc.defaultView.getSelection(), range = doc.createRange();
      range.setEnd(snapshot.anchorNode, snapshot.anchorOffset);
      range.collapse(false);
      sel.removeAllRanges();
      sel.addRange(range);
      sel.extend(snapshot.focusNode, snapshot.focusOffset);
    }
  }

  // Does the actual updating of the line display. Bails out
  // (returning false) when there is nothing to be done and forced is
  // false.
  function updateDisplayIfNeeded(cm, update) {
    var display = cm.display, doc = cm.doc;

    if (update.editorIsHidden) {
      resetView(cm);
      return false
    }

    // Bail out if the visible area is already rendered and nothing changed.
    if (!update.force &&
        update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&
        display.renderedView == display.view && countDirtyView(cm) == 0)
      { return false }

    if (maybeUpdateLineNumberWidth(cm)) {
      resetView(cm);
      update.dims = getDimensions(cm);
    }

    // Compute a suitable new viewport (from & to)
    var end = doc.first + doc.size;
    var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);
    var to = Math.min(end, update.visible.to + cm.options.viewportMargin);
    if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom); }
    if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo); }
    if (sawCollapsedSpans) {
      from = visualLineNo(cm.doc, from);
      to = visualLineEndNo(cm.doc, to);
    }

    var different = from != display.viewFrom || to != display.viewTo ||
      display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;
    adjustView(cm, from, to);

    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
    // Position the mover div to align with the current scroll position
    cm.display.mover.style.top = display.viewOffset + "px";

    var toUpdate = countDirtyView(cm);
    if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))
      { return false }

    // For big changes, we hide the enclosing element during the
    // update, since that speeds up the operations on most browsers.
    var selSnapshot = selectionSnapshot(cm);
    if (toUpdate > 4) { display.lineDiv.style.display = "none"; }
    patchDisplay(cm, display.updateLineNumbers, update.dims);
    if (toUpdate > 4) { display.lineDiv.style.display = ""; }
    display.renderedView = display.view;
    // There might have been a widget with a focused element that got
    // hidden or updated, if so re-focus it.
    restoreSelection(selSnapshot);

    // Prevent selection and cursors from interfering with the scroll
    // width and height.
    removeChildren(display.cursorDiv);
    removeChildren(display.selectionDiv);
    display.gutters.style.height = display.sizer.style.minHeight = 0;

    if (different) {
      display.lastWrapHeight = update.wrapperHeight;
      display.lastWrapWidth = update.wrapperWidth;
      startWorker(cm, 400);
    }

    display.updateLineNumbers = null;

    return true
  }

  function postUpdateDisplay(cm, update) {
    var viewport = update.viewport;

    for (var first = true;; first = false) {
      if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {
        // Clip forced viewport to actual scrollable area.
        if (viewport && viewport.top != null)
          { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)}; }
        // Updated line heights might result in the drawn area not
        // actually covering the viewport. Keep looping until it does.
        update.visible = visibleLines(cm.display, cm.doc, viewport);
        if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)
          { break }
      } else if (first) {
        update.visible = visibleLines(cm.display, cm.doc, viewport);
      }
      if (!updateDisplayIfNeeded(cm, update)) { break }
      updateHeightsInViewport(cm);
      var barMeasure = measureForScrollbars(cm);
      updateSelection(cm);
      updateScrollbars(cm, barMeasure);
      setDocumentHeight(cm, barMeasure);
      update.force = false;
    }

    update.signal(cm, "update", cm);
    if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {
      update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
      cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;
    }
  }

  function updateDisplaySimple(cm, viewport) {
    var update = new DisplayUpdate(cm, viewport);
    if (updateDisplayIfNeeded(cm, update)) {
      updateHeightsInViewport(cm);
      postUpdateDisplay(cm, update);
      var barMeasure = measureForScrollbars(cm);
      updateSelection(cm);
      updateScrollbars(cm, barMeasure);
      setDocumentHeight(cm, barMeasure);
      update.finish();
    }
  }

  // Sync the actual display DOM structure with display.view, removing
  // nodes for lines that are no longer in view, and creating the ones
  // that are not there yet, and updating the ones that are out of
  // date.
  function patchDisplay(cm, updateNumbersFrom, dims) {
    var display = cm.display, lineNumbers = cm.options.lineNumbers;
    var container = display.lineDiv, cur = container.firstChild;

    function rm(node) {
      var next = node.nextSibling;
      // Works around a throw-scroll bug in OS X Webkit
      if (webkit && mac && cm.display.currentWheelTarget == node)
        { node.style.display = "none"; }
      else
        { node.parentNode.removeChild(node); }
      return next
    }

    var view = display.view, lineN = display.viewFrom;
    // Loop over the elements in the view, syncing cur (the DOM nodes
    // in display.lineDiv) with the view as we go.
    for (var i = 0; i < view.length; i++) {
      var lineView = view[i];
      if (lineView.hidden) ; else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet
        var node = buildLineElement(cm, lineView, lineN, dims);
        container.insertBefore(node, cur);
      } else { // Already drawn
        while (cur != lineView.node) { cur = rm(cur); }
        var updateNumber = lineNumbers && updateNumbersFrom != null &&
          updateNumbersFrom <= lineN && lineView.lineNumber;
        if (lineView.changes) {
          if (indexOf(lineView.changes, "gutter") > -1) { updateNumber = false; }
          updateLineForChanges(cm, lineView, lineN, dims);
        }
        if (updateNumber) {
          removeChildren(lineView.lineNumber);
          lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
        }
        cur = lineView.node.nextSibling;
      }
      lineN += lineView.size;
    }
    while (cur) { cur = rm(cur); }
  }

  function updateGutterSpace(display) {
    var width = display.gutters.offsetWidth;
    display.sizer.style.marginLeft = width + "px";
    // Send an event to consumers responding to changes in gutter width.
    signalLater(display, "gutterChanged", display);
  }

  function setDocumentHeight(cm, measure) {
    cm.display.sizer.style.minHeight = measure.docHeight + "px";
    cm.display.heightForcer.style.top = measure.docHeight + "px";
    cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px";
  }

  // Re-align line numbers and gutter marks to compensate for
  // horizontal scrolling.
  function alignHorizontally(cm) {
    var display = cm.display, view = display.view;
    if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return }
    var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
    var gutterW = display.gutters.offsetWidth, left = comp + "px";
    for (var i = 0; i < view.length; i++) { if (!view[i].hidden) {
      if (cm.options.fixedGutter) {
        if (view[i].gutter)
          { view[i].gutter.style.left = left; }
        if (view[i].gutterBackground)
          { view[i].gutterBackground.style.left = left; }
      }
      var align = view[i].alignable;
      if (align) { for (var j = 0; j < align.length; j++)
        { align[j].style.left = left; } }
    } }
    if (cm.options.fixedGutter)
      { display.gutters.style.left = (comp + gutterW) + "px"; }
  }

  // Used to ensure that the line number gutter is still the right
  // size for the current document size. Returns true when an update
  // is needed.
  function maybeUpdateLineNumberWidth(cm) {
    if (!cm.options.lineNumbers) { return false }
    var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
    if (last.length != display.lineNumChars) {
      var test = display.measure.appendChild(elt("div", [elt("div", last)],
                                                 "CodeMirror-linenumber CodeMirror-gutter-elt"));
      var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
      display.lineGutter.style.width = "";
      display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;
      display.lineNumWidth = display.lineNumInnerWidth + padding;
      display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
      display.lineGutter.style.width = display.lineNumWidth + "px";
      updateGutterSpace(cm.display);
      return true
    }
    return false
  }

  function getGutters(gutters, lineNumbers) {
    var result = [], sawLineNumbers = false;
    for (var i = 0; i < gutters.length; i++) {
      var name = gutters[i], style = null;
      if (typeof name != "string") { style = name.style; name = name.className; }
      if (name == "CodeMirror-linenumbers") {
        if (!lineNumbers) { continue }
        else { sawLineNumbers = true; }
      }
      result.push({className: name, style: style});
    }
    if (lineNumbers && !sawLineNumbers) { result.push({className: "CodeMirror-linenumbers", style: null}); }
    return result
  }

  // Rebuild the gutter elements, ensure the margin to the left of the
  // code matches their width.
  function renderGutters(display) {
    var gutters = display.gutters, specs = display.gutterSpecs;
    removeChildren(gutters);
    display.lineGutter = null;
    for (var i = 0; i < specs.length; ++i) {
      var ref = specs[i];
      var className = ref.className;
      var style = ref.style;
      var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + className));
      if (style) { gElt.style.cssText = style; }
      if (className == "CodeMirror-linenumbers") {
        display.lineGutter = gElt;
        gElt.style.width = (display.lineNumWidth || 1) + "px";
      }
    }
    gutters.style.display = specs.length ? "" : "none";
    updateGutterSpace(display);
  }

  function updateGutters(cm) {
    renderGutters(cm.display);
    regChange(cm);
    alignHorizontally(cm);
  }

  // The display handles the DOM integration, both for input reading
  // and content drawing. It holds references to DOM nodes and
  // display-related state.

  function Display(place, doc, input, options) {
    var d = this;
    this.input = input;

    // Covers bottom-right square when both scrollbars are present.
    d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
    d.scrollbarFiller.setAttribute("cm-not-content", "true");
    // Covers bottom of gutter when coverGutterNextToScrollbar is on
    // and h scrollbar is present.
    d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
    d.gutterFiller.setAttribute("cm-not-content", "true");
    // Will contain the actual code, positioned to cover the viewport.
    d.lineDiv = eltP("div", null, "CodeMirror-code");
    // Elements are added to these to represent selection and cursors.
    d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
    d.cursorDiv = elt("div", null, "CodeMirror-cursors");
    // A visibility: hidden element used to find the size of things.
    d.measure = elt("div", null, "CodeMirror-measure");
    // When lines outside of the viewport are measured, they are drawn in this.
    d.lineMeasure = elt("div", null, "CodeMirror-measure");
    // Wraps everything that needs to exist inside the vertically-padded coordinate system
    d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
                      null, "position: relative; outline: none");
    var lines = eltP("div", [d.lineSpace], "CodeMirror-lines");
    // Moved around its parent to cover visible view.
    d.mover = elt("div", [lines], null, "position: relative");
    // Set to the height of the document, allowing scrolling.
    d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
    d.sizerWidth = null;
    // Behavior of elts with overflow: auto and padding is
    // inconsistent across browsers. This is used to ensure the
    // scrollable area is big enough.
    d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;");
    // Will contain the gutters, if any.
    d.gutters = elt("div", null, "CodeMirror-gutters");
    d.lineGutter = null;
    // Actual scrollable element.
    d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
    d.scroller.setAttribute("tabIndex", "-1");
    // The element in which the editor lives.
    d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
    // See #6982. FIXME remove when this has been fixed for a while in Chrome
    if (chrome && chrome_version >= 105) { d.wrapper.style.clipPath = "inset(0px)"; }

    // This attribute is respected by automatic translation systems such as Google Translate,
    // and may also be respected by tools used by human translators.
    d.wrapper.setAttribute('translate', 'no');

    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
    if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
    if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true; }

    if (place) {
      if (place.appendChild) { place.appendChild(d.wrapper); }
      else { place(d.wrapper); }
    }

    // Current rendered range (may be bigger than the view window).
    d.viewFrom = d.viewTo = doc.first;
    d.reportedViewFrom = d.reportedViewTo = doc.first;
    // Information about the rendered lines.
    d.view = [];
    d.renderedView = null;
    // Holds info about a single rendered line when it was rendered
    // for measurement, while not in view.
    d.externalMeasured = null;
    // Empty space (in pixels) above the view
    d.viewOffset = 0;
    d.lastWrapHeight = d.lastWrapWidth = 0;
    d.updateLineNumbers = null;

    d.nativeBarWidth = d.barHeight = d.barWidth = 0;
    d.scrollbarsClipped = false;

    // Used to only resize the line number gutter when necessary (when
    // the amount of lines crosses a boundary that makes its width change)
    d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
    // Set to true when a non-horizontal-scrolling line widget is
    // added. As an optimization, line widget aligning is skipped when
    // this is false.
    d.alignWidgets = false;

    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;

    // Tracks the maximum line length so that the horizontal scrollbar
    // can be kept static when scrolling.
    d.maxLine = null;
    d.maxLineLength = 0;
    d.maxLineChanged = false;

    // Used for measuring wheel scrolling granularity
    d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;

    // True when shift is held down.
    d.shift = false;

    // Used to track whether anything happened since the context menu
    // was opened.
    d.selForContextMenu = null;

    d.activeTouch = null;

    d.gutterSpecs = getGutters(options.gutters, options.lineNumbers);
    renderGutters(d);

    input.init(d);
  }

  // Since the delta values reported on mouse wheel events are
  // unstandardized between browsers and even browser versions, and
  // generally horribly unpredictable, this code starts by measuring
  // the scroll effect that the first few mouse wheel events have,
  // and, from that, detects the way it can convert deltas to pixel
  // offsets afterwards.
  //
  // The reason we want to know the amount a wheel event will scroll
  // is that it gives us a chance to update the display before the
  // actual scrolling happens, reducing flickering.

  var wheelSamples = 0, wheelPixelsPerUnit = null;
  // Fill in a browser-detected starting value on browsers where we
  // know one. These don't have to be accurate -- the result of them
  // being wrong would just be a slight flicker on the first wheel
  // scroll (if it is large enough).
  if (ie) { wheelPixelsPerUnit = -.53; }
  else if (gecko) { wheelPixelsPerUnit = 15; }
  else if (chrome) { wheelPixelsPerUnit = -.7; }
  else if (safari) { wheelPixelsPerUnit = -1/3; }

  function wheelEventDelta(e) {
    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail; }
    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail; }
    else if (dy == null) { dy = e.wheelDelta; }
    return {x: dx, y: dy}
  }
  function wheelEventPixels(e) {
    var delta = wheelEventDelta(e);
    delta.x *= wheelPixelsPerUnit;
    delta.y *= wheelPixelsPerUnit;
    return delta
  }

  function onScrollWheel(cm, e) {
    // On Chrome 102, viewport updates somehow stop wheel-based
    // scrolling. Turning off pointer events during the scroll seems
    // to avoid the issue.
    if (chrome && chrome_version == 102) {
      if (cm.display.chromeScrollHack == null) { cm.display.sizer.style.pointerEvents = "none"; }
      else { clearTimeout(cm.display.chromeScrollHack); }
      cm.display.chromeScrollHack = setTimeout(function () {
        cm.display.chromeScrollHack = null;
        cm.display.sizer.style.pointerEvents = "";
      }, 100);
    }
    var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;
    var pixelsPerUnit = wheelPixelsPerUnit;
    if (e.deltaMode === 0) {
      dx = e.deltaX;
      dy = e.deltaY;
      pixelsPerUnit = 1;
    }

    var display = cm.display, scroll = display.scroller;
    // Quit if there's nothing to scroll here
    var canScrollX = scroll.scrollWidth > scroll.clientWidth;
    var canScrollY = scroll.scrollHeight > scroll.clientHeight;
    if (!(dx && canScrollX || dy && canScrollY)) { return }

    // Webkit browsers on OS X abort momentum scrolls when the target
    // of the scroll event is removed from the scrollable element.
    // This hack (see related code in patchDisplay) makes sure the
    // element is kept around.
    if (dy && mac && webkit) {
      outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
        for (var i = 0; i < view.length; i++) {
          if (view[i].node == cur) {
            cm.display.currentWheelTarget = cur;
            break outer
          }
        }
      }
    }

    // On some browsers, horizontal scrolling will cause redraws to
    // happen before the gutter has been realigned, causing it to
    // wriggle around in a most unseemly way. When we have an
    // estimated pixels/delta value, we just handle horizontal
    // scrolling entirely here. It'll be slightly off from native, but
    // better than glitching out.
    if (dx && !gecko && !presto && pixelsPerUnit != null) {
      if (dy && canScrollY)
        { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * pixelsPerUnit)); }
      setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * pixelsPerUnit));
      // Only prevent default scrolling if vertical scrolling is
      // actually possible. Otherwise, it causes vertical scroll
      // jitter on OSX trackpads when deltaX is small and deltaY
      // is large (issue #3579)
      if (!dy || (dy && canScrollY))
        { e_preventDefault(e); }
      display.wheelStartX = null; // Abort measurement, if in progress
      return
    }

    // 'Project' the visible viewport to cover the area that is being
    // scrolled into view (if we know enough to estimate it).
    if (dy && pixelsPerUnit != null) {
      var pixels = dy * pixelsPerUnit;
      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
      if (pixels < 0) { top = Math.max(0, top + pixels - 50); }
      else { bot = Math.min(cm.doc.height, bot + pixels + 50); }
      updateDisplaySimple(cm, {top: top, bottom: bot});
    }

    if (wheelSamples < 20 && e.deltaMode !== 0) {
      if (display.wheelStartX == null) {
        display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
        display.wheelDX = dx; display.wheelDY = dy;
        setTimeout(function () {
          if (display.wheelStartX == null) { return }
          var movedX = scroll.scrollLeft - display.wheelStartX;
          var movedY = scroll.scrollTop - display.wheelStartY;
          var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
            (movedX && display.wheelDX && movedX / display.wheelDX);
          display.wheelStartX = display.wheelStartY = null;
          if (!sample) { return }
          wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
          ++wheelSamples;
        }, 200);
      } else {
        display.wheelDX += dx; display.wheelDY += dy;
      }
    }
  }

  // Selection objects are immutable. A new one is created every time
  // the selection changes. A selection is one or more non-overlapping
  // (and non-touching) ranges, sorted, and an integer that indicates
  // which one is the primary selection (the one that's scrolled into
  // view, that getCursor returns, etc).
  var Selection = function(ranges, primIndex) {
    this.ranges = ranges;
    this.primIndex = primIndex;
  };

  Selection.prototype.primary = function () { return this.ranges[this.primIndex] };

  Selection.prototype.equals = function (other) {
    if (other == this) { return true }
    if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false }
    for (var i = 0; i < this.ranges.length; i++) {
      var here = this.ranges[i], there = other.ranges[i];
      if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false }
    }
    return true
  };

  Selection.prototype.deepCopy = function () {
    var out = [];
    for (var i = 0; i < this.ranges.length; i++)
      { out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head)); }
    return new Selection(out, this.primIndex)
  };

  Selection.prototype.somethingSelected = function () {
    for (var i = 0; i < this.ranges.length; i++)
      { if (!this.ranges[i].empty()) { return true } }
    return false
  };

  Selection.prototype.contains = function (pos, end) {
    if (!end) { end = pos; }
    for (var i = 0; i < this.ranges.length; i++) {
      var range = this.ranges[i];
      if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
        { return i }
    }
    return -1
  };

  var Range = function(anchor, head) {
    this.anchor = anchor; this.head = head;
  };

  Range.prototype.from = function () { return minPos(this.anchor, this.head) };
  Range.prototype.to = function () { return maxPos(this.anchor, this.head) };
  Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch };

  // Take an unsorted, potentially overlapping set of ranges, and
  // build a selection out of it. 'Consumes' ranges array (modifying
  // it).
  function normalizeSelection(cm, ranges, primIndex) {
    var mayTouch = cm && cm.options.selectionsMayTouch;
    var prim = ranges[primIndex];
    ranges.sort(function (a, b) { return cmp(a.from(), b.from()); });
    primIndex = indexOf(ranges, prim);
    for (var i = 1; i < ranges.length; i++) {
      var cur = ranges[i], prev = ranges[i - 1];
      var diff = cmp(prev.to(), cur.from());
      if (mayTouch && !cur.empty() ? diff > 0 : diff >= 0) {
        var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
        var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
        if (i <= primIndex) { --primIndex; }
        ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
      }
    }
    return new Selection(ranges, primIndex)
  }

  function simpleSelection(anchor, head) {
    return new Selection([new Range(anchor, head || anchor)], 0)
  }

  // Compute the position of the end of a change (its 'to' property
  // refers to the pre-change end).
  function changeEnd(change) {
    if (!change.text) { return change.to }
    return Pos(change.from.line + change.text.length - 1,
               lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0))
  }

  // Adjust a position to refer to the post-change position of the
  // same text, or the end of the change if the change covers it.
  function adjustForChange(pos, change) {
    if (cmp(pos, change.from) < 0) { return pos }
    if (cmp(pos, change.to) <= 0) { return changeEnd(change) }

    var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
    if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch; }
    return Pos(line, ch)
  }

  function computeSelAfterChange(doc, change) {
    var out = [];
    for (var i = 0; i < doc.sel.ranges.length; i++) {
      var range = doc.sel.ranges[i];
      out.push(new Range(adjustForChange(range.anchor, change),
                         adjustForChange(range.head, change)));
    }
    return normalizeSelection(doc.cm, out, doc.sel.primIndex)
  }

  function offsetPos(pos, old, nw) {
    if (pos.line == old.line)
      { return Pos(nw.line, pos.ch - old.ch + nw.ch) }
    else
      { return Pos(nw.line + (pos.line - old.line), pos.ch) }
  }

  // Used by replaceSelections to allow moving the selection to the
  // start or around the replaced test. Hint may be "start" or "around".
  function computeReplacedSel(doc, changes, hint) {
    var out = [];
    var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;
    for (var i = 0; i < changes.length; i++) {
      var change = changes[i];
      var from = offsetPos(change.from, oldPrev, newPrev);
      var to = offsetPos(changeEnd(change), oldPrev, newPrev);
      oldPrev = change.to;
      newPrev = to;
      if (hint == "around") {
        var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;
        out[i] = new Range(inv ? to : from, inv ? from : to);
      } else {
        out[i] = new Range(from, from);
      }
    }
    return new Selection(out, doc.sel.primIndex)
  }

  // Used to get the editor into a consistent state again when options change.

  function loadMode(cm) {
    cm.doc.mode = getMode(cm.options, cm.doc.modeOption);
    resetModeState(cm);
  }

  function resetModeState(cm) {
    cm.doc.iter(function (line) {
      if (line.stateAfter) { line.stateAfter = null; }
      if (line.styles) { line.styles = null; }
    });
    cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first;
    startWorker(cm, 100);
    cm.state.modeGen++;
    if (cm.curOp) { regChange(cm); }
  }

  // DOCUMENT DATA STRUCTURE

  // By default, updates that start and end at the beginning of a line
  // are treated specially, in order to make the association of line
  // widgets and marker elements with the text behave more intuitive.
  function isWholeLineUpdate(doc, change) {
    return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
      (!doc.cm || doc.cm.options.wholeLineUpdateBefore)
  }

  // Perform a change on the document data structure.
  function updateDoc(doc, change, markedSpans, estimateHeight) {
    function spansFor(n) {return markedSpans ? markedSpans[n] : null}
    function update(line, text, spans) {
      updateLine(line, text, spans, estimateHeight);
      signalLater(line, "change", line, change);
    }
    function linesFor(start, end) {
      var result = [];
      for (var i = start; i < end; ++i)
        { result.push(new Line(text[i], spansFor(i), estimateHeight)); }
      return result
    }

    var from = change.from, to = change.to, text = change.text;
    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
    var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;

    // Adjust the line structure
    if (change.full) {
      doc.insert(0, linesFor(0, text.length));
      doc.remove(text.length, doc.size - text.length);
    } else if (isWholeLineUpdate(doc, change)) {
      // This is a whole-line replace. Treated specially to make
      // sure line objects move the way they are supposed to.
      var added = linesFor(0, text.length - 1);
      update(lastLine, lastLine.text, lastSpans);
      if (nlines) { doc.remove(from.line, nlines); }
      if (added.length) { doc.insert(from.line, added); }
    } else if (firstLine == lastLine) {
      if (text.length == 1) {
        update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
      } else {
        var added$1 = linesFor(1, text.length - 1);
        added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
        update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
        doc.insert(from.line + 1, added$1);
      }
    } else if (text.length == 1) {
      update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
      doc.remove(from.line + 1, nlines);
    } else {
      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
      update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
      var added$2 = linesFor(1, text.length - 1);
      if (nlines > 1) { doc.remove(from.line + 1, nlines - 1); }
      doc.insert(from.line + 1, added$2);
    }

    signalLater(doc, "change", doc, change);
  }

  // Call f for all linked documents.
  function linkedDocs(doc, f, sharedHistOnly) {
    function propagate(doc, skip, sharedHist) {
      if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) {
        var rel = doc.linked[i];
        if (rel.doc == skip) { continue }
        var shared = sharedHist && rel.sharedHist;
        if (sharedHistOnly && !shared) { continue }
        f(rel.doc, shared);
        propagate(rel.doc, doc, shared);
      } }
    }
    propagate(doc, null, true);
  }

  // Attach a document to an editor.
  function attachDoc(cm, doc) {
    if (doc.cm) { throw new Error("This document is already in use.") }
    cm.doc = doc;
    doc.cm = cm;
    estimateLineHeights(cm);
    loadMode(cm);
    setDirectionClass(cm);
    cm.options.direction = doc.direction;
    if (!cm.options.lineWrapping) { findMaxLine(cm); }
    cm.options.mode = doc.modeOption;
    regChange(cm);
  }

  function setDirectionClass(cm) {
  (cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl");
  }

  function directionChanged(cm) {
    runInOp(cm, function () {
      setDirectionClass(cm);
      regChange(cm);
    });
  }

  function History(prev) {
    // Arrays of change events and selections. Doing something adds an
    // event to done and clears undo. Undoing moves events from done
    // to undone, redoing moves them in the other direction.
    this.done = []; this.undone = [];
    this.undoDepth = prev ? prev.undoDepth : Infinity;
    // Used to track when changes can be merged into a single undo
    // event
    this.lastModTime = this.lastSelTime = 0;
    this.lastOp = this.lastSelOp = null;
    this.lastOrigin = this.lastSelOrigin = null;
    // Used by the isClean() method
    this.generation = this.maxGeneration = prev ? prev.maxGeneration : 1;
  }

  // Create a history change event from an updateDoc-style change
  // object.
  function historyChangeFromChange(doc, change) {
    var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
    attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
    linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true);
    return histChange
  }

  // Pop all selection events off the end of a history array. Stop at
  // a change event.
  function clearSelectionEvents(array) {
    while (array.length) {
      var last = lst(array);
      if (last.ranges) { array.pop(); }
      else { break }
    }
  }

  // Find the top change event in the history. Pop off selection
  // events that are in the way.
  function lastChangeEvent(hist, force) {
    if (force) {
      clearSelectionEvents(hist.done);
      return lst(hist.done)
    } else if (hist.done.length && !lst(hist.done).ranges) {
      return lst(hist.done)
    } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
      hist.done.pop();
      return lst(hist.done)
    }
  }

  // Register a change in the history. Merges changes that are within
  // a single operation, or are close together with an origin that
  // allows merging (starting with "+") into a single event.
  function addChangeToHistory(doc, change, selAfter, opId) {
    var hist = doc.history;
    hist.undone.length = 0;
    var time = +new Date, cur;
    var last;

    if ((hist.lastOp == opId ||
         hist.lastOrigin == change.origin && change.origin &&
         ((change.origin.charAt(0) == "+" && hist.lastModTime > time - (doc.cm ? doc.cm.options.historyEventDelay : 500)) ||
          change.origin.charAt(0) == "*")) &&
        (cur = lastChangeEvent(hist, hist.lastOp == opId))) {
      // Merge this change into the last event
      last = lst(cur.changes);
      if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
        // Optimized case for simple insertion -- don't want to add
        // new changesets for every character typed
        last.to = changeEnd(change);
      } else {
        // Add new sub-event
        cur.changes.push(historyChangeFromChange(doc, change));
      }
    } else {
      // Can not be merged, start a new event.
      var before = lst(hist.done);
      if (!before || !before.ranges)
        { pushSelectionToHistory(doc.sel, hist.done); }
      cur = {changes: [historyChangeFromChange(doc, change)],
             generation: hist.generation};
      hist.done.push(cur);
      while (hist.done.length > hist.undoDepth) {
        hist.done.shift();
        if (!hist.done[0].ranges) { hist.done.shift(); }
      }
    }
    hist.done.push(selAfter);
    hist.generation = ++hist.maxGeneration;
    hist.lastModTime = hist.lastSelTime = time;
    hist.lastOp = hist.lastSelOp = opId;
    hist.lastOrigin = hist.lastSelOrigin = change.origin;

    if (!last) { signal(doc, "historyAdded"); }
  }

  function selectionEventCanBeMerged(doc, origin, prev, sel) {
    var ch = origin.charAt(0);
    return ch == "*" ||
      ch == "+" &&
      prev.ranges.length == sel.ranges.length &&
      prev.somethingSelected() == sel.somethingSelected() &&
      new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500)
  }

  // Called whenever the selection changes, sets the new selection as
  // the pending selection in the history, and pushes the old pending
  // selection into the 'done' array when it was significantly
  // different (in number of selected ranges, emptiness, or time).
  function addSelectionToHistory(doc, sel, opId, options) {
    var hist = doc.history, origin = options && options.origin;

    // A new event is started when the previous origin does not match
    // the current, or the origins don't allow matching. Origins
    // starting with * are always merged, those starting with + are
    // merged when similar and close together in time.
    if (opId == hist.lastSelOp ||
        (origin && hist.lastSelOrigin == origin &&
         (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
          selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
      { hist.done[hist.done.length - 1] = sel; }
    else
      { pushSelectionToHistory(sel, hist.done); }

    hist.lastSelTime = +new Date;
    hist.lastSelOrigin = origin;
    hist.lastSelOp = opId;
    if (options && options.clearRedo !== false)
      { clearSelectionEvents(hist.undone); }
  }

  function pushSelectionToHistory(sel, dest) {
    var top = lst(dest);
    if (!(top && top.ranges && top.equals(sel)))
      { dest.push(sel); }
  }

  // Used to store marked span information in the history.
  function attachLocalSpans(doc, change, from, to) {
    var existing = change["spans_" + doc.id], n = 0;
    doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) {
      if (line.markedSpans)
        { (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; }
      ++n;
    });
  }

  // When un/re-doing restores text containing marked spans, those
  // that have been explicitly cleared should not be restored.
  function removeClearedSpans(spans) {
    if (!spans) { return null }
    var out;
    for (var i = 0; i < spans.length; ++i) {
      if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i); } }
      else if (out) { out.push(spans[i]); }
    }
    return !out ? spans : out.length ? out : null
  }

  // Retrieve and filter the old marked spans stored in a change event.
  function getOldSpans(doc, change) {
    var found = change["spans_" + doc.id];
    if (!found) { return null }
    var nw = [];
    for (var i = 0; i < change.text.length; ++i)
      { nw.push(removeClearedSpans(found[i])); }
    return nw
  }

  // Used for un/re-doing changes from the history. Combines the
  // result of computing the existing spans with the set of spans that
  // existed in the history (so that deleting around a span and then
  // undoing brings back the span).
  function mergeOldSpans(doc, change) {
    var old = getOldSpans(doc, change);
    var stretched = stretchSpansOverChange(doc, change);
    if (!old) { return stretched }
    if (!stretched) { return old }

    for (var i = 0; i < old.length; ++i) {
      var oldCur = old[i], stretchCur = stretched[i];
      if (oldCur && stretchCur) {
        spans: for (var j = 0; j < stretchCur.length; ++j) {
          var span = stretchCur[j];
          for (var k = 0; k < oldCur.length; ++k)
            { if (oldCur[k].marker == span.marker) { continue spans } }
          oldCur.push(span);
        }
      } else if (stretchCur) {
        old[i] = stretchCur;
      }
    }
    return old
  }

  // Used both to provide a JSON-safe object in .getHistory, and, when
  // detaching a document, to split the history in two
  function copyHistoryArray(events, newGroup, instantiateSel) {
    var copy = [];
    for (var i = 0; i < events.length; ++i) {
      var event = events[i];
      if (event.ranges) {
        copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
        continue
      }
      var changes = event.changes, newChanges = [];
      copy.push({changes: newChanges});
      for (var j = 0; j < changes.length; ++j) {
        var change = changes[j], m = (void 0);
        newChanges.push({from: change.from, to: change.to, text: change.text});
        if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\d+)$/)) {
          if (indexOf(newGroup, Number(m[1])) > -1) {
            lst(newChanges)[prop] = change[prop];
            delete change[prop];
          }
        } } }
      }
    }
    return copy
  }

  // The 'scroll' parameter given to many of these indicated whether
  // the new cursor position should be scrolled into view after
  // modifying the selection.

  // If shift is held or the extend flag is set, extends a range to
  // include a given position (and optionally a second position).
  // Otherwise, simply returns the range between the given positions.
  // Used for cursor motion and such.
  function extendRange(range, head, other, extend) {
    if (extend) {
      var anchor = range.anchor;
      if (other) {
        var posBefore = cmp(head, anchor) < 0;
        if (posBefore != (cmp(other, anchor) < 0)) {
          anchor = head;
          head = other;
        } else if (posBefore != (cmp(head, other) < 0)) {
          head = other;
        }
      }
      return new Range(anchor, head)
    } else {
      return new Range(other || head, head)
    }
  }

  // Extend the primary selection range, discard the rest.
  function extendSelection(doc, head, other, options, extend) {
    if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend); }
    setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options);
  }

  // Extend all selections (pos is an array of selections with length
  // equal the number of selections)
  function extendSelections(doc, heads, options) {
    var out = [];
    var extend = doc.cm && (doc.cm.display.shift || doc.extend);
    for (var i = 0; i < doc.sel.ranges.length; i++)
      { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend); }
    var newSel = normalizeSelection(doc.cm, out, doc.sel.primIndex);
    setSelection(doc, newSel, options);
  }

  // Updates a single range in the selection.
  function replaceOneSelection(doc, i, range, options) {
    var ranges = doc.sel.ranges.slice(0);
    ranges[i] = range;
    setSelection(doc, normalizeSelection(doc.cm, ranges, doc.sel.primIndex), options);
  }

  // Reset the selection to a single range.
  function setSimpleSelection(doc, anchor, head, options) {
    setSelection(doc, simpleSelection(anchor, head), options);
  }

  // Give beforeSelectionChange handlers a change to influence a
  // selection update.
  function filterSelectionChange(doc, sel, options) {
    var obj = {
      ranges: sel.ranges,
      update: function(ranges) {
        this.ranges = [];
        for (var i = 0; i < ranges.length; i++)
          { this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
                                     clipPos(doc, ranges[i].head)); }
      },
      origin: options && options.origin
    };
    signal(doc, "beforeSelectionChange", doc, obj);
    if (doc.cm) { signal(doc.cm, "beforeSelectionChange", doc.cm, obj); }
    if (obj.ranges != sel.ranges) { return normalizeSelection(doc.cm, obj.ranges, obj.ranges.length - 1) }
    else { return sel }
  }

  function setSelectionReplaceHistory(doc, sel, options) {
    var done = doc.history.done, last = lst(done);
    if (last && last.ranges) {
      done[done.length - 1] = sel;
      setSelectionNoUndo(doc, sel, options);
    } else {
      setSelection(doc, sel, options);
    }
  }

  // Set a new selection.
  function setSelection(doc, sel, options) {
    setSelectionNoUndo(doc, sel, options);
    addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
  }

  function setSelectionNoUndo(doc, sel, options) {
    if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
      { sel = filterSelectionChange(doc, sel, options); }

    var bias = options && options.bias ||
      (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);
    setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));

    if (!(options && options.scroll === false) && doc.cm && doc.cm.getOption("readOnly") != "nocursor")
      { ensureCursorVisible(doc.cm); }
  }

  function setSelectionInner(doc, sel) {
    if (sel.equals(doc.sel)) { return }

    doc.sel = sel;

    if (doc.cm) {
      doc.cm.curOp.updateInput = 1;
      doc.cm.curOp.selectionChanged = true;
      signalCursorActivity(doc.cm);
    }
    signalLater(doc, "cursorActivity", doc);
  }

  // Verify that the selection does not partially select any atomic
  // marked ranges.
  function reCheckSelection(doc) {
    setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false));
  }

  // Return a selection that does not partially select any atomic
  // ranges.
  function skipAtomicInSelection(doc, sel, bias, mayClear) {
    var out;
    for (var i = 0; i < sel.ranges.length; i++) {
      var range = sel.ranges[i];
      var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i];
      var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear);
      var newHead = range.head == range.anchor ? newAnchor : skipAtomic(doc, range.head, old && old.head, bias, mayClear);
      if (out || newAnchor != range.anchor || newHead != range.head) {
        if (!out) { out = sel.ranges.slice(0, i); }
        out[i] = new Range(newAnchor, newHead);
      }
    }
    return out ? normalizeSelection(doc.cm, out, sel.primIndex) : sel
  }

  function skipAtomicInner(doc, pos, oldPos, dir, mayClear) {
    var line = getLine(doc, pos.line);
    if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {
      var sp = line.markedSpans[i], m = sp.marker;

      // Determine if we should prevent the cursor being placed to the left/right of an atomic marker
      // Historically this was determined using the inclusiveLeft/Right option, but the new way to control it
      // is with selectLeft/Right
      var preventCursorLeft = ("selectLeft" in m) ? !m.selectLeft : m.inclusiveLeft;
      var preventCursorRight = ("selectRight" in m) ? !m.selectRight : m.inclusiveRight;

      if ((sp.from == null || (preventCursorLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&
          (sp.to == null || (preventCursorRight ? sp.to >= pos.ch : sp.to > pos.ch))) {
        if (mayClear) {
          signal(m, "beforeCursorEnter");
          if (m.explicitlyCleared) {
            if (!line.markedSpans) { break }
            else {--i; continue}
          }
        }
        if (!m.atomic) { continue }

        if (oldPos) {
          var near = m.find(dir < 0 ? 1 : -1), diff = (void 0);
          if (dir < 0 ? preventCursorRight : preventCursorLeft)
            { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null); }
          if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0))
            { return skipAtomicInner(doc, near, pos, dir, mayClear) }
        }

        var far = m.find(dir < 0 ? -1 : 1);
        if (dir < 0 ? preventCursorLeft : preventCursorRight)
          { far = movePos(doc, far, dir, far.line == pos.line ? line : null); }
        return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null
      }
    } }
    return pos
  }

  // Ensure a given position is not inside an atomic range.
  function skipAtomic(doc, pos, oldPos, bias, mayClear) {
    var dir = bias || 1;
    var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) ||
        (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) ||
        skipAtomicInner(doc, pos, oldPos, -dir, mayClear) ||
        (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true));
    if (!found) {
      doc.cantEdit = true;
      return Pos(doc.first, 0)
    }
    return found
  }

  function movePos(doc, pos, dir, line) {
    if (dir < 0 && pos.ch == 0) {
      if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) }
      else { return null }
    } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) {
      if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) }
      else { return null }
    } else {
      return new Pos(pos.line, pos.ch + dir)
    }
  }

  function selectAll(cm) {
    cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);
  }

  // UPDATING

  // Allow "beforeChange" event handlers to influence a change
  function filterChange(doc, change, update) {
    var obj = {
      canceled: false,
      from: change.from,
      to: change.to,
      text: change.text,
      origin: change.origin,
      cancel: function () { return obj.canceled = true; }
    };
    if (update) { obj.update = function (from, to, text, origin) {
      if (from) { obj.from = clipPos(doc, from); }
      if (to) { obj.to = clipPos(doc, to); }
      if (text) { obj.text = text; }
      if (origin !== undefined) { obj.origin = origin; }
    }; }
    signal(doc, "beforeChange", doc, obj);
    if (doc.cm) { signal(doc.cm, "beforeChange", doc.cm, obj); }

    if (obj.canceled) {
      if (doc.cm) { doc.cm.curOp.updateInput = 2; }
      return null
    }
    return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}
  }

  // Apply a change to a document, and add it to the document's
  // history, and propagating it to all linked documents.
  function makeChange(doc, change, ignoreReadOnly) {
    if (doc.cm) {
      if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) }
      if (doc.cm.state.suppressEdits) { return }
    }

    if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
      change = filterChange(doc, change, true);
      if (!change) { return }
    }

    // Possibly split or suppress the update based on the presence
    // of read-only spans in its range.
    var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
    if (split) {
      for (var i = split.length - 1; i >= 0; --i)
        { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text, origin: change.origin}); }
    } else {
      makeChangeInner(doc, change);
    }
  }

  function makeChangeInner(doc, change) {
    if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) { return }
    var selAfter = computeSelAfterChange(doc, change);
    addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);

    makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
    var rebased = [];

    linkedDocs(doc, function (doc, sharedHist) {
      if (!sharedHist && indexOf(rebased, doc.history) == -1) {
        rebaseHist(doc.history, change);
        rebased.push(doc.history);
      }
      makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
    });
  }

  // Revert a change stored in a document's history.
  function makeChangeFromHistory(doc, type, allowSelectionOnly) {
    var suppress = doc.cm && doc.cm.state.suppressEdits;
    if (suppress && !allowSelectionOnly) { return }

    var hist = doc.history, event, selAfter = doc.sel;
    var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;

    // Verify that there is a useable event (so that ctrl-z won't
    // needlessly clear selection events)
    var i = 0;
    for (; i < source.length; i++) {
      event = source[i];
      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
        { break }
    }
    if (i == source.length) { return }
    hist.lastOrigin = hist.lastSelOrigin = null;

    for (;;) {
      event = source.pop();
      if (event.ranges) {
        pushSelectionToHistory(event, dest);
        if (allowSelectionOnly && !event.equals(doc.sel)) {
          setSelection(doc, event, {clearRedo: false});
          return
        }
        selAfter = event;
      } else if (suppress) {
        source.push(event);
        return
      } else { break }
    }

    // Build up a reverse change object to add to the opposite history
    // stack (redo when undoing, and vice versa).
    var antiChanges = [];
    pushSelectionToHistory(selAfter, dest);
    dest.push({changes: antiChanges, generation: hist.generation});
    hist.generation = event.generation || ++hist.maxGeneration;

    var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");

    var loop = function ( i ) {
      var change = event.changes[i];
      change.origin = type;
      if (filter && !filterChange(doc, change, false)) {
        source.length = 0;
        return {}
      }

      antiChanges.push(historyChangeFromChange(doc, change));

      var after = i ? computeSelAfterChange(doc, change) : lst(source);
      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
      if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}); }
      var rebased = [];

      // Propagate to the linked documents
      linkedDocs(doc, function (doc, sharedHist) {
        if (!sharedHist && indexOf(rebased, doc.history) == -1) {
          rebaseHist(doc.history, change);
          rebased.push(doc.history);
        }
        makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
      });
    };

    for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) {
      var returned = loop( i$1 );

      if ( returned ) return returned.v;
    }
  }

  // Sub-views need their line numbers shifted when text is added
  // above or below them in the parent document.
  function shiftDoc(doc, distance) {
    if (distance == 0) { return }
    doc.first += distance;
    doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range(
      Pos(range.anchor.line + distance, range.anchor.ch),
      Pos(range.head.line + distance, range.head.ch)
    ); }), doc.sel.primIndex);
    if (doc.cm) {
      regChange(doc.cm, doc.first, doc.first - distance, distance);
      for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)
        { regLineChange(doc.cm, l, "gutter"); }
    }
  }

  // More lower-level change function, handling only a single document
  // (not linked ones).
  function makeChangeSingleDoc(doc, change, selAfter, spans) {
    if (doc.cm && !doc.cm.curOp)
      { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) }

    if (change.to.line < doc.first) {
      shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
      return
    }
    if (change.from.line > doc.lastLine()) { return }

    // Clip the change to the size of this doc
    if (change.from.line < doc.first) {
      var shift = change.text.length - 1 - (doc.first - change.from.line);
      shiftDoc(doc, shift);
      change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
                text: [lst(change.text)], origin: change.origin};
    }
    var last = doc.lastLine();
    if (change.to.line > last) {
      change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
                text: [change.text[0]], origin: change.origin};
    }

    change.removed = getBetween(doc, change.from, change.to);

    if (!selAfter) { selAfter = computeSelAfterChange(doc, change); }
    if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans); }
    else { updateDoc(doc, change, spans); }
    setSelectionNoUndo(doc, selAfter, sel_dontScroll);

    if (doc.cantEdit && skipAtomic(doc, Pos(doc.firstLine(), 0)))
      { doc.cantEdit = false; }
  }

  // Handle the interaction of a change to a document with the editor
  // that this document is part of.
  function makeChangeSingleDocInEditor(cm, change, spans) {
    var doc = cm.doc, display = cm.display, from = change.from, to = change.to;

    var recomputeMaxLength = false, checkWidthStart = from.line;
    if (!cm.options.lineWrapping) {
      checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
      doc.iter(checkWidthStart, to.line + 1, function (line) {
        if (line == display.maxLine) {
          recomputeMaxLength = true;
          return true
        }
      });
    }

    if (doc.sel.contains(change.from, change.to) > -1)
      { signalCursorActivity(cm); }

    updateDoc(doc, change, spans, estimateHeight(cm));

    if (!cm.options.lineWrapping) {
      doc.iter(checkWidthStart, from.line + change.text.length, function (line) {
        var len = lineLength(line);
        if (len > display.maxLineLength) {
          display.maxLine = line;
          display.maxLineLength = len;
          display.maxLineChanged = true;
          recomputeMaxLength = false;
        }
      });
      if (recomputeMaxLength) { cm.curOp.updateMaxLine = true; }
    }

    retreatFrontier(doc, from.line);
    startWorker(cm, 400);

    var lendiff = change.text.length - (to.line - from.line) - 1;
    // Remember that these lines changed, for updating the display
    if (change.full)
      { regChange(cm); }
    else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
      { regLineChange(cm, from.line, "text"); }
    else
      { regChange(cm, from.line, to.line + 1, lendiff); }

    var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change");
    if (changeHandler || changesHandler) {
      var obj = {
        from: from, to: to,
        text: change.text,
        removed: change.removed,
        origin: change.origin
      };
      if (changeHandler) { signalLater(cm, "change", cm, obj); }
      if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj); }
    }
    cm.display.selForContextMenu = null;
  }

  function replaceRange(doc, code, from, to, origin) {
    var assign;

    if (!to) { to = from; }
    if (cmp(to, from) < 0) { (assign = [to, from], from = assign[0], to = assign[1]); }
    if (typeof code == "string") { code = doc.splitLines(code); }
    makeChange(doc, {from: from, to: to, text: code, origin: origin});
  }

  // Rebasing/resetting history to deal with externally-sourced changes

  function rebaseHistSelSingle(pos, from, to, diff) {
    if (to < pos.line) {
      pos.line += diff;
    } else if (from < pos.line) {
      pos.line = from;
      pos.ch = 0;
    }
  }

  // Tries to rebase an array of history events given a change in the
  // document. If the change touches the same lines as the event, the
  // event, and everything 'behind' it, is discarded. If the change is
  // before the event, the event's positions are updated. Uses a
  // copy-on-write scheme for the positions, to avoid having to
  // reallocate them all on every rebase, but also avoid problems with
  // shared position objects being unsafely updated.
  function rebaseHistArray(array, from, to, diff) {
    for (var i = 0; i < array.length; ++i) {
      var sub = array[i], ok = true;
      if (sub.ranges) {
        if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }
        for (var j = 0; j < sub.ranges.length; j++) {
          rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
          rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
        }
        continue
      }
      for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) {
        var cur = sub.changes[j$1];
        if (to < cur.from.line) {
          cur.from = Pos(cur.from.line + diff, cur.from.ch);
          cur.to = Pos(cur.to.line + diff, cur.to.ch);
        } else if (from <= cur.to.line) {
          ok = false;
          break
        }
      }
      if (!ok) {
        array.splice(0, i + 1);
        i = 0;
      }
    }
  }

  function rebaseHist(hist, change) {
    var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
    rebaseHistArray(hist.done, from, to, diff);
    rebaseHistArray(hist.undone, from, to, diff);
  }

  // Utility for applying a change to a line by handle or number,
  // returning the number and optionally registering the line as
  // changed.
  function changeLine(doc, handle, changeType, op) {
    var no = handle, line = handle;
    if (typeof handle == "number") { line = getLine(doc, clipLine(doc, handle)); }
    else { no = lineNo(handle); }
    if (no == null) { return null }
    if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType); }
    return line
  }

  // The document is represented as a BTree consisting of leaves, with
  // chunk of lines in them, and branches, with up to ten leaves or
  // other branch nodes below them. The top node is always a branch
  // node, and is the document object itself (meaning it has
  // additional methods and properties).
  //
  // All nodes have parent links. The tree is used both to go from
  // line numbers to line objects, and to go from objects to numbers.
  // It also indexes by height, and is used to convert between height
  // and line object, and to find the total height of the document.
  //
  // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html

  function LeafChunk(lines) {
    this.lines = lines;
    this.parent = null;
    var height = 0;
    for (var i = 0; i < lines.length; ++i) {
      lines[i].parent = this;
      height += lines[i].height;
    }
    this.height = height;
  }

  LeafChunk.prototype = {
    chunkSize: function() { return this.lines.length },

    // Remove the n lines at offset 'at'.
    removeInner: function(at, n) {
      for (var i = at, e = at + n; i < e; ++i) {
        var line = this.lines[i];
        this.height -= line.height;
        cleanUpLine(line);
        signalLater(line, "delete");
      }
      this.lines.splice(at, n);
    },

    // Helper used to collapse a small branch into a single leaf.
    collapse: function(lines) {
      lines.push.apply(lines, this.lines);
    },

    // Insert the given array of lines at offset 'at', count them as
    // having the given height.
    insertInner: function(at, lines, height) {
      this.height += height;
      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
      for (var i = 0; i < lines.length; ++i) { lines[i].parent = this; }
    },

    // Used to iterate over a part of the tree.
    iterN: function(at, n, op) {
      for (var e = at + n; at < e; ++at)
        { if (op(this.lines[at])) { return true } }
    }
  };

  function BranchChunk(children) {
    this.children = children;
    var size = 0, height = 0;
    for (var i = 0; i < children.length; ++i) {
      var ch = children[i];
      size += ch.chunkSize(); height += ch.height;
      ch.parent = this;
    }
    this.size = size;
    this.height = height;
    this.parent = null;
  }

  BranchChunk.prototype = {
    chunkSize: function() { return this.size },

    removeInner: function(at, n) {
      this.size -= n;
      for (var i = 0; i < this.children.length; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at < sz) {
          var rm = Math.min(n, sz - at), oldHeight = child.height;
          child.removeInner(at, rm);
          this.height -= oldHeight - child.height;
          if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
          if ((n -= rm) == 0) { break }
          at = 0;
        } else { at -= sz; }
      }
      // If the result is smaller than 25 lines, ensure that it is a
      // single leaf node.
      if (this.size - n < 25 &&
          (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
        var lines = [];
        this.collapse(lines);
        this.children = [new LeafChunk(lines)];
        this.children[0].parent = this;
      }
    },

    collapse: function(lines) {
      for (var i = 0; i < this.children.length; ++i) { this.children[i].collapse(lines); }
    },

    insertInner: function(at, lines, height) {
      this.size += lines.length;
      this.height += height;
      for (var i = 0; i < this.children.length; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at <= sz) {
          child.insertInner(at, lines, height);
          if (child.lines && child.lines.length > 50) {
            // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced.
            // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest.
            var remaining = child.lines.length % 25 + 25;
            for (var pos = remaining; pos < child.lines.length;) {
              var leaf = new LeafChunk(child.lines.slice(pos, pos += 25));
              child.height -= leaf.height;
              this.children.splice(++i, 0, leaf);
              leaf.parent = this;
            }
            child.lines = child.lines.slice(0, remaining);
            this.maybeSpill();
          }
          break
        }
        at -= sz;
      }
    },

    // When a node has grown, check whether it should be split.
    maybeSpill: function() {
      if (this.children.length <= 10) { return }
      var me = this;
      do {
        var spilled = me.children.splice(me.children.length - 5, 5);
        var sibling = new BranchChunk(spilled);
        if (!me.parent) { // Become the parent node
          var copy = new BranchChunk(me.children);
          copy.parent = me;
          me.children = [copy, sibling];
          me = copy;
       } else {
          me.size -= sibling.size;
          me.height -= sibling.height;
          var myIndex = indexOf(me.parent.children, me);
          me.parent.children.splice(myIndex + 1, 0, sibling);
        }
        sibling.parent = me.parent;
      } while (me.children.length > 10)
      me.parent.maybeSpill();
    },

    iterN: function(at, n, op) {
      for (var i = 0; i < this.children.length; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at < sz) {
          var used = Math.min(n, sz - at);
          if (child.iterN(at, used, op)) { return true }
          if ((n -= used) == 0) { break }
          at = 0;
        } else { at -= sz; }
      }
    }
  };

  // Line widgets are block elements displayed above or below a line.

  var LineWidget = function(doc, node, options) {
    if (options) { for (var opt in options) { if (options.hasOwnProperty(opt))
      { this[opt] = options[opt]; } } }
    this.doc = doc;
    this.node = node;
  };

  LineWidget.prototype.clear = function () {
    var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);
    if (no == null || !ws) { return }
    for (var i = 0; i < ws.length; ++i) { if (ws[i] == this) { ws.splice(i--, 1); } }
    if (!ws.length) { line.widgets = null; }
    var height = widgetHeight(this);
    updateLineHeight(line, Math.max(0, line.height - height));
    if (cm) {
      runInOp(cm, function () {
        adjustScrollWhenAboveVisible(cm, line, -height);
        regLineChange(cm, no, "widget");
      });
      signalLater(cm, "lineWidgetCleared", cm, this, no);
    }
  };

  LineWidget.prototype.changed = function () {
      var this$1 = this;

    var oldH = this.height, cm = this.doc.cm, line = this.line;
    this.height = null;
    var diff = widgetHeight(this) - oldH;
    if (!diff) { return }
    if (!lineIsHidden(this.doc, line)) { updateLineHeight(line, line.height + diff); }
    if (cm) {
      runInOp(cm, function () {
        cm.curOp.forceUpdate = true;
        adjustScrollWhenAboveVisible(cm, line, diff);
        signalLater(cm, "lineWidgetChanged", cm, this$1, lineNo(line));
      });
    }
  };
  eventMixin(LineWidget);

  function adjustScrollWhenAboveVisible(cm, line, diff) {
    if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
      { addToScrollTop(cm, diff); }
  }

  function addLineWidget(doc, handle, node, options) {
    var widget = new LineWidget(doc, node, options);
    var cm = doc.cm;
    if (cm && widget.noHScroll) { cm.display.alignWidgets = true; }
    changeLine(doc, handle, "widget", function (line) {
      var widgets = line.widgets || (line.widgets = []);
      if (widget.insertAt == null) { widgets.push(widget); }
      else { widgets.splice(Math.min(widgets.length, Math.max(0, widget.insertAt)), 0, widget); }
      widget.line = line;
      if (cm && !lineIsHidden(doc, line)) {
        var aboveVisible = heightAtLine(line) < doc.scrollTop;
        updateLineHeight(line, line.height + widgetHeight(widget));
        if (aboveVisible) { addToScrollTop(cm, widget.height); }
        cm.curOp.forceUpdate = true;
      }
      return true
    });
    if (cm) { signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle)); }
    return widget
  }

  // TEXTMARKERS

  // Created with markText and setBookmark methods. A TextMarker is a
  // handle that can be used to clear or find a marked position in the
  // document. Line objects hold arrays (markedSpans) containing
  // {from, to, marker} object pointing to such marker objects, and
  // indicating that such a marker is present on that line. Multiple
  // lines may point to the same marker when it spans across lines.
  // The spans will have null for their from/to properties when the
  // marker continues beyond the start/end of the line. Markers have
  // links back to the lines they currently touch.

  // Collapsed markers have unique ids, in order to be able to order
  // them, which is needed for uniquely determining an outer marker
  // when they overlap (they may nest, but not partially overlap).
  var nextMarkerId = 0;

  var TextMarker = function(doc, type) {
    this.lines = [];
    this.type = type;
    this.doc = doc;
    this.id = ++nextMarkerId;
  };

  // Clear the marker.
  TextMarker.prototype.clear = function () {
    if (this.explicitlyCleared) { return }
    var cm = this.doc.cm, withOp = cm && !cm.curOp;
    if (withOp) { startOperation(cm); }
    if (hasHandler(this, "clear")) {
      var found = this.find();
      if (found) { signalLater(this, "clear", found.from, found.to); }
    }
    var min = null, max = null;
    for (var i = 0; i < this.lines.length; ++i) {
      var line = this.lines[i];
      var span = getMarkedSpanFor(line.markedSpans, this);
      if (cm && !this.collapsed) { regLineChange(cm, lineNo(line), "text"); }
      else if (cm) {
        if (span.to != null) { max = lineNo(line); }
        if (span.from != null) { min = lineNo(line); }
      }
      line.markedSpans = removeMarkedSpan(line.markedSpans, span);
      if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)
        { updateLineHeight(line, textHeight(cm.display)); }
    }
    if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) {
      var visual = visualLine(this.lines[i$1]), len = lineLength(visual);
      if (len > cm.display.maxLineLength) {
        cm.display.maxLine = visual;
        cm.display.maxLineLength = len;
        cm.display.maxLineChanged = true;
      }
    } }

    if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1); }
    this.lines.length = 0;
    this.explicitlyCleared = true;
    if (this.atomic && this.doc.cantEdit) {
      this.doc.cantEdit = false;
      if (cm) { reCheckSelection(cm.doc); }
    }
    if (cm) { signalLater(cm, "markerCleared", cm, this, min, max); }
    if (withOp) { endOperation(cm); }
    if (this.parent) { this.parent.clear(); }
  };

  // Find the position of the marker in the document. Returns a {from,
  // to} object by default. Side can be passed to get a specific side
  // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
  // Pos objects returned contain a line object, rather than a line
  // number (used to prevent looking up the same line twice).
  TextMarker.prototype.find = function (side, lineObj) {
    if (side == null && this.type == "bookmark") { side = 1; }
    var from, to;
    for (var i = 0; i < this.lines.length; ++i) {
      var line = this.lines[i];
      var span = getMarkedSpanFor(line.markedSpans, this);
      if (span.from != null) {
        from = Pos(lineObj ? line : lineNo(line), span.from);
        if (side == -1) { return from }
      }
      if (span.to != null) {
        to = Pos(lineObj ? line : lineNo(line), span.to);
        if (side == 1) { return to }
      }
    }
    return from && {from: from, to: to}
  };

  // Signals that the marker's widget changed, and surrounding layout
  // should be recomputed.
  TextMarker.prototype.changed = function () {
      var this$1 = this;

    var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
    if (!pos || !cm) { return }
    runInOp(cm, function () {
      var line = pos.line, lineN = lineNo(pos.line);
      var view = findViewForLine(cm, lineN);
      if (view) {
        clearLineMeasurementCacheFor(view);
        cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
      }
      cm.curOp.updateMaxLine = true;
      if (!lineIsHidden(widget.doc, line) && widget.height != null) {
        var oldHeight = widget.height;
        widget.height = null;
        var dHeight = widgetHeight(widget) - oldHeight;
        if (dHeight)
          { updateLineHeight(line, line.height + dHeight); }
      }
      signalLater(cm, "markerChanged", cm, this$1);
    });
  };

  TextMarker.prototype.attachLine = function (line) {
    if (!this.lines.length && this.doc.cm) {
      var op = this.doc.cm.curOp;
      if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
        { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); }
    }
    this.lines.push(line);
  };

  TextMarker.prototype.detachLine = function (line) {
    this.lines.splice(indexOf(this.lines, line), 1);
    if (!this.lines.length && this.doc.cm) {
      var op = this.doc.cm.curOp
      ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
    }
  };
  eventMixin(TextMarker);

  // Create a marker, wire it up to the right lines, and
  function markText(doc, from, to, options, type) {
    // Shared markers (across linked documents) are handled separately
    // (markTextShared will call out to this again, once per
    // document).
    if (options && options.shared) { return markTextShared(doc, from, to, options, type) }
    // Ensure we are in an operation.
    if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) }

    var marker = new TextMarker(doc, type), diff = cmp(from, to);
    if (options) { copyObj(options, marker, false); }
    // Don't connect empty markers unless clearWhenEmpty is false
    if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
      { return marker }
    if (marker.replacedWith) {
      // Showing up as a widget implies collapsed (widget replaces text)
      marker.collapsed = true;
      marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget");
      if (!options.handleMouseEvents) { marker.widgetNode.setAttribute("cm-ignore-events", "true"); }
      if (options.insertLeft) { marker.widgetNode.insertLeft = true; }
    }
    if (marker.collapsed) {
      if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
          from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
        { throw new Error("Inserting collapsed marker partially overlapping an existing one") }
      seeCollapsedSpans();
    }

    if (marker.addToHistory)
      { addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN); }

    var curLine = from.line, cm = doc.cm, updateMaxLine;
    doc.iter(curLine, to.line + 1, function (line) {
      if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
        { updateMaxLine = true; }
      if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0); }
      addMarkedSpan(line, new MarkedSpan(marker,
                                         curLine == from.line ? from.ch : null,
                                         curLine == to.line ? to.ch : null), doc.cm && doc.cm.curOp);
      ++curLine;
    });
    // lineIsHidden depends on the presence of the spans, so needs a second pass
    if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) {
      if (lineIsHidden(doc, line)) { updateLineHeight(line, 0); }
    }); }

    if (marker.clearOnEnter) { on(marker, "beforeCursorEnter", function () { return marker.clear(); }); }

    if (marker.readOnly) {
      seeReadOnlySpans();
      if (doc.history.done.length || doc.history.undone.length)
        { doc.clearHistory(); }
    }
    if (marker.collapsed) {
      marker.id = ++nextMarkerId;
      marker.atomic = true;
    }
    if (cm) {
      // Sync editor state
      if (updateMaxLine) { cm.curOp.updateMaxLine = true; }
      if (marker.collapsed)
        { regChange(cm, from.line, to.line + 1); }
      else if (marker.className || marker.startStyle || marker.endStyle || marker.css ||
               marker.attributes || marker.title)
        { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, "text"); } }
      if (marker.atomic) { reCheckSelection(cm.doc); }
      signalLater(cm, "markerAdded", cm, marker);
    }
    return marker
  }

  // SHARED TEXTMARKERS

  // A shared marker spans multiple linked documents. It is
  // implemented as a meta-marker-object controlling multiple normal
  // markers.
  var SharedTextMarker = function(markers, primary) {
    this.markers = markers;
    this.primary = primary;
    for (var i = 0; i < markers.length; ++i)
      { markers[i].parent = this; }
  };

  SharedTextMarker.prototype.clear = function () {
    if (this.explicitlyCleared) { return }
    this.explicitlyCleared = true;
    for (var i = 0; i < this.markers.length; ++i)
      { this.markers[i].clear(); }
    signalLater(this, "clear");
  };

  SharedTextMarker.prototype.find = function (side, lineObj) {
    return this.primary.find(side, lineObj)
  };
  eventMixin(SharedTextMarker);

  function markTextShared(doc, from, to, options, type) {
    options = copyObj(options);
    options.shared = false;
    var markers = [markText(doc, from, to, options, type)], primary = markers[0];
    var widget = options.widgetNode;
    linkedDocs(doc, function (doc) {
      if (widget) { options.widgetNode = widget.cloneNode(true); }
      markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
      for (var i = 0; i < doc.linked.length; ++i)
        { if (doc.linked[i].isParent) { return } }
      primary = lst(markers);
    });
    return new SharedTextMarker(markers, primary)
  }

  function findSharedMarkers(doc) {
    return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; })
  }

  function copySharedMarkers(doc, markers) {
    for (var i = 0; i < markers.length; i++) {
      var marker = markers[i], pos = marker.find();
      var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);
      if (cmp(mFrom, mTo)) {
        var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);
        marker.markers.push(subMark);
        subMark.parent = marker;
      }
    }
  }

  function detachSharedMarkers(markers) {
    var loop = function ( i ) {
      var marker = markers[i], linked = [marker.primary.doc];
      linkedDocs(marker.primary.doc, function (d) { return linked.push(d); });
      for (var j = 0; j < marker.markers.length; j++) {
        var subMarker = marker.markers[j];
        if (indexOf(linked, subMarker.doc) == -1) {
          subMarker.parent = null;
          marker.markers.splice(j--, 1);
        }
      }
    };

    for (var i = 0; i < markers.length; i++) loop( i );
  }

  var nextDocId = 0;
  var Doc = function(text, mode, firstLine, lineSep, direction) {
    if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) }
    if (firstLine == null) { firstLine = 0; }

    BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
    this.first = firstLine;
    this.scrollTop = this.scrollLeft = 0;
    this.cantEdit = false;
    this.cleanGeneration = 1;
    this.modeFrontier = this.highlightFrontier = firstLine;
    var start = Pos(firstLine, 0);
    this.sel = simpleSelection(start);
    this.history = new History(null);
    this.id = ++nextDocId;
    this.modeOption = mode;
    this.lineSep = lineSep;
    this.direction = (direction == "rtl") ? "rtl" : "ltr";
    this.extend = false;

    if (typeof text == "string") { text = this.splitLines(text); }
    updateDoc(this, {from: start, to: start, text: text});
    setSelection(this, simpleSelection(start), sel_dontScroll);
  };

  Doc.prototype = createObj(BranchChunk.prototype, {
    constructor: Doc,
    // Iterate over the document. Supports two forms -- with only one
    // argument, it calls that for each line in the document. With
    // three, it iterates over the range given by the first two (with
    // the second being non-inclusive).
    iter: function(from, to, op) {
      if (op) { this.iterN(from - this.first, to - from, op); }
      else { this.iterN(this.first, this.first + this.size, from); }
    },

    // Non-public interface for adding and removing lines.
    insert: function(at, lines) {
      var height = 0;
      for (var i = 0; i < lines.length; ++i) { height += lines[i].height; }
      this.insertInner(at - this.first, lines, height);
    },
    remove: function(at, n) { this.removeInner(at - this.first, n); },

    // From here, the methods are part of the public interface. Most
    // are also available from CodeMirror (editor) instances.

    getValue: function(lineSep) {
      var lines = getLines(this, this.first, this.first + this.size);
      if (lineSep === false) { return lines }
      return lines.join(lineSep || this.lineSeparator())
    },
    setValue: docMethodOp(function(code) {
      var top = Pos(this.first, 0), last = this.first + this.size - 1;
      makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
                        text: this.splitLines(code), origin: "setValue", full: true}, true);
      if (this.cm) { scrollToCoords(this.cm, 0, 0); }
      setSelection(this, simpleSelection(top), sel_dontScroll);
    }),
    replaceRange: function(code, from, to, origin) {
      from = clipPos(this, from);
      to = to ? clipPos(this, to) : from;
      replaceRange(this, code, from, to, origin);
    },
    getRange: function(from, to, lineSep) {
      var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
      if (lineSep === false) { return lines }
      if (lineSep === '') { return lines.join('') }
      return lines.join(lineSep || this.lineSeparator())
    },

    getLine: function(line) {var l = this.getLineHandle(line); return l && l.text},

    getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }},
    getLineNumber: function(line) {return lineNo(line)},

    getLineHandleVisualStart: function(line) {
      if (typeof line == "number") { line = getLine(this, line); }
      return visualLine(line)
    },

    lineCount: function() {return this.size},
    firstLine: function() {return this.first},
    lastLine: function() {return this.first + this.size - 1},

    clipPos: function(pos) {return clipPos(this, pos)},

    getCursor: function(start) {
      var range = this.sel.primary(), pos;
      if (start == null || start == "head") { pos = range.head; }
      else if (start == "anchor") { pos = range.anchor; }
      else if (start == "end" || start == "to" || start === false) { pos = range.to(); }
      else { pos = range.from(); }
      return pos
    },
    listSelections: function() { return this.sel.ranges },
    somethingSelected: function() {return this.sel.somethingSelected()},

    setCursor: docMethodOp(function(line, ch, options) {
      setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options);
    }),
    setSelection: docMethodOp(function(anchor, head, options) {
      setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);
    }),
    extendSelection: docMethodOp(function(head, other, options) {
      extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
    }),
    extendSelections: docMethodOp(function(heads, options) {
      extendSelections(this, clipPosArray(this, heads), options);
    }),
    extendSelectionsBy: docMethodOp(function(f, options) {
      var heads = map(this.sel.ranges, f);
      extendSelections(this, clipPosArray(this, heads), options);
    }),
    setSelections: docMethodOp(function(ranges, primary, options) {
      if (!ranges.length) { return }
      var out = [];
      for (var i = 0; i < ranges.length; i++)
        { out[i] = new Range(clipPos(this, ranges[i].anchor),
                           clipPos(this, ranges[i].head || ranges[i].anchor)); }
      if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex); }
      setSelection(this, normalizeSelection(this.cm, out, primary), options);
    }),
    addSelection: docMethodOp(function(anchor, head, options) {
      var ranges = this.sel.ranges.slice(0);
      ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));
      setSelection(this, normalizeSelection(this.cm, ranges, ranges.length - 1), options);
    }),

    getSelection: function(lineSep) {
      var ranges = this.sel.ranges, lines;
      for (var i = 0; i < ranges.length; i++) {
        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
        lines = lines ? lines.concat(sel) : sel;
      }
      if (lineSep === false) { return lines }
      else { return lines.join(lineSep || this.lineSeparator()) }
    },
    getSelections: function(lineSep) {
      var parts = [], ranges = this.sel.ranges;
      for (var i = 0; i < ranges.length; i++) {
        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
        if (lineSep !== false) { sel = sel.join(lineSep || this.lineSeparator()); }
        parts[i] = sel;
      }
      return parts
    },
    replaceSelection: function(code, collapse, origin) {
      var dup = [];
      for (var i = 0; i < this.sel.ranges.length; i++)
        { dup[i] = code; }
      this.replaceSelections(dup, collapse, origin || "+input");
    },
    replaceSelections: docMethodOp(function(code, collapse, origin) {
      var changes = [], sel = this.sel;
      for (var i = 0; i < sel.ranges.length; i++) {
        var range = sel.ranges[i];
        changes[i] = {from: range.from(), to: range.to(), text: this.splitLines(code[i]), origin: origin};
      }
      var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
      for (var i$1 = changes.length - 1; i$1 >= 0; i$1--)
        { makeChange(this, changes[i$1]); }
      if (newSel) { setSelectionReplaceHistory(this, newSel); }
      else if (this.cm) { ensureCursorVisible(this.cm); }
    }),
    undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}),
    redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}),
    undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}),
    redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}),

    setExtending: function(val) {this.extend = val;},
    getExtending: function() {return this.extend},

    historySize: function() {
      var hist = this.history, done = 0, undone = 0;
      for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done; } }
      for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone; } }
      return {undo: done, redo: undone}
    },
    clearHistory: function() {
      var this$1 = this;

      this.history = new History(this.history);
      linkedDocs(this, function (doc) { return doc.history = this$1.history; }, true);
    },

    markClean: function() {
      this.cleanGeneration = this.changeGeneration(true);
    },
    changeGeneration: function(forceSplit) {
      if (forceSplit)
        { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null; }
      return this.history.generation
    },
    isClean: function (gen) {
      return this.history.generation == (gen || this.cleanGeneration)
    },

    getHistory: function() {
      return {done: copyHistoryArray(this.history.done),
              undone: copyHistoryArray(this.history.undone)}
    },
    setHistory: function(histData) {
      var hist = this.history = new History(this.history);
      hist.done = copyHistoryArray(histData.done.slice(0), null, true);
      hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
    },

    setGutterMarker: docMethodOp(function(line, gutterID, value) {
      return changeLine(this, line, "gutter", function (line) {
        var markers = line.gutterMarkers || (line.gutterMarkers = {});
        markers[gutterID] = value;
        if (!value && isEmpty(markers)) { line.gutterMarkers = null; }
        return true
      })
    }),

    clearGutter: docMethodOp(function(gutterID) {
      var this$1 = this;

      this.iter(function (line) {
        if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
          changeLine(this$1, line, "gutter", function () {
            line.gutterMarkers[gutterID] = null;
            if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null; }
            return true
          });
        }
      });
    }),

    lineInfo: function(line) {
      var n;
      if (typeof line == "number") {
        if (!isLine(this, line)) { return null }
        n = line;
        line = getLine(this, line);
        if (!line) { return null }
      } else {
        n = lineNo(line);
        if (n == null) { return null }
      }
      return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
              textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
              widgets: line.widgets}
    },

    addLineClass: docMethodOp(function(handle, where, cls) {
      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
        var prop = where == "text" ? "textClass"
                 : where == "background" ? "bgClass"
                 : where == "gutter" ? "gutterClass" : "wrapClass";
        if (!line[prop]) { line[prop] = cls; }
        else if (classTest(cls).test(line[prop])) { return false }
        else { line[prop] += " " + cls; }
        return true
      })
    }),
    removeLineClass: docMethodOp(function(handle, where, cls) {
      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
        var prop = where == "text" ? "textClass"
                 : where == "background" ? "bgClass"
                 : where == "gutter" ? "gutterClass" : "wrapClass";
        var cur = line[prop];
        if (!cur) { return false }
        else if (cls == null) { line[prop] = null; }
        else {
          var found = cur.match(classTest(cls));
          if (!found) { return false }
          var end = found.index + found[0].length;
          line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
        }
        return true
      })
    }),

    addLineWidget: docMethodOp(function(handle, node, options) {
      return addLineWidget(this, handle, node, options)
    }),
    removeLineWidget: function(widget) { widget.clear(); },

    markText: function(from, to, options) {
      return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range")
    },
    setBookmark: function(pos, options) {
      var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
                      insertLeft: options && options.insertLeft,
                      clearWhenEmpty: false, shared: options && options.shared,
                      handleMouseEvents: options && options.handleMouseEvents};
      pos = clipPos(this, pos);
      return markText(this, pos, pos, realOpts, "bookmark")
    },
    findMarksAt: function(pos) {
      pos = clipPos(this, pos);
      var markers = [], spans = getLine(this, pos.line).markedSpans;
      if (spans) { for (var i = 0; i < spans.length; ++i) {
        var span = spans[i];
        if ((span.from == null || span.from <= pos.ch) &&
            (span.to == null || span.to >= pos.ch))
          { markers.push(span.marker.parent || span.marker); }
      } }
      return markers
    },
    findMarks: function(from, to, filter) {
      from = clipPos(this, from); to = clipPos(this, to);
      var found = [], lineNo = from.line;
      this.iter(from.line, to.line + 1, function (line) {
        var spans = line.markedSpans;
        if (spans) { for (var i = 0; i < spans.length; i++) {
          var span = spans[i];
          if (!(span.to != null && lineNo == from.line && from.ch >= span.to ||
                span.from == null && lineNo != from.line ||
                span.from != null && lineNo == to.line && span.from >= to.ch) &&
              (!filter || filter(span.marker)))
            { found.push(span.marker.parent || span.marker); }
        } }
        ++lineNo;
      });
      return found
    },
    getAllMarks: function() {
      var markers = [];
      this.iter(function (line) {
        var sps = line.markedSpans;
        if (sps) { for (var i = 0; i < sps.length; ++i)
          { if (sps[i].from != null) { markers.push(sps[i].marker); } } }
      });
      return markers
    },

    posFromIndex: function(off) {
      var ch, lineNo = this.first, sepSize = this.lineSeparator().length;
      this.iter(function (line) {
        var sz = line.text.length + sepSize;
        if (sz > off) { ch = off; return true }
        off -= sz;
        ++lineNo;
      });
      return clipPos(this, Pos(lineNo, ch))
    },
    indexFromPos: function (coords) {
      coords = clipPos(this, coords);
      var index = coords.ch;
      if (coords.line < this.first || coords.ch < 0) { return 0 }
      var sepSize = this.lineSeparator().length;
      this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value
        index += line.text.length + sepSize;
      });
      return index
    },

    copy: function(copyHistory) {
      var doc = new Doc(getLines(this, this.first, this.first + this.size),
                        this.modeOption, this.first, this.lineSep, this.direction);
      doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
      doc.sel = this.sel;
      doc.extend = false;
      if (copyHistory) {
        doc.history.undoDepth = this.history.undoDepth;
        doc.setHistory(this.getHistory());
      }
      return doc
    },

    linkedDoc: function(options) {
      if (!options) { options = {}; }
      var from = this.first, to = this.first + this.size;
      if (options.from != null && options.from > from) { from = options.from; }
      if (options.to != null && options.to < to) { to = options.to; }
      var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction);
      if (options.sharedHist) { copy.history = this.history
      ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
      copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
      copySharedMarkers(copy, findSharedMarkers(this));
      return copy
    },
    unlinkDoc: function(other) {
      if (other instanceof CodeMirror) { other = other.doc; }
      if (this.linked) { for (var i = 0; i < this.linked.length; ++i) {
        var link = this.linked[i];
        if (link.doc != other) { continue }
        this.linked.splice(i, 1);
        other.unlinkDoc(this);
        detachSharedMarkers(findSharedMarkers(this));
        break
      } }
      // If the histories were shared, split them again
      if (other.history == this.history) {
        var splitIds = [other.id];
        linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true);
        other.history = new History(null);
        other.history.done = copyHistoryArray(this.history.done, splitIds);
        other.history.undone = copyHistoryArray(this.history.undone, splitIds);
      }
    },
    iterLinkedDocs: function(f) {linkedDocs(this, f);},

    getMode: function() {return this.mode},
    getEditor: function() {return this.cm},

    splitLines: function(str) {
      if (this.lineSep) { return str.split(this.lineSep) }
      return splitLinesAuto(str)
    },
    lineSeparator: function() { return this.lineSep || "\n" },

    setDirection: docMethodOp(function (dir) {
      if (dir != "rtl") { dir = "ltr"; }
      if (dir == this.direction) { return }
      this.direction = dir;
      this.iter(function (line) { return line.order = null; });
      if (this.cm) { directionChanged(this.cm); }
    })
  });

  // Public alias.
  Doc.prototype.eachLine = Doc.prototype.iter;

  // Kludge to work around strange IE behavior where it'll sometimes
  // re-fire a series of drag-related events right after the drop (#1551)
  var lastDrop = 0;

  function onDrop(e) {
    var cm = this;
    clearDragCursor(cm);
    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))
      { return }
    e_preventDefault(e);
    if (ie) { lastDrop = +new Date; }
    var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
    if (!pos || cm.isReadOnly()) { return }
    // Might be a file drop, in which case we simply extract the text
    // and insert it.
    if (files && files.length && window.FileReader && window.File) {
      var n = files.length, text = Array(n), read = 0;
      var markAsReadAndPasteIfAllFilesAreRead = function () {
        if (++read == n) {
          operation(cm, function () {
            pos = clipPos(cm.doc, pos);
            var change = {from: pos, to: pos,
                          text: cm.doc.splitLines(
                              text.filter(function (t) { return t != null; }).join(cm.doc.lineSeparator())),
                          origin: "paste"};
            makeChange(cm.doc, change);
            setSelectionReplaceHistory(cm.doc, simpleSelection(clipPos(cm.doc, pos), clipPos(cm.doc, changeEnd(change))));
          })();
        }
      };
      var readTextFromFile = function (file, i) {
        if (cm.options.allowDropFileTypes &&
            indexOf(cm.options.allowDropFileTypes, file.type) == -1) {
          markAsReadAndPasteIfAllFilesAreRead();
          return
        }
        var reader = new FileReader;
        reader.onerror = function () { return markAsReadAndPasteIfAllFilesAreRead(); };
        reader.onload = function () {
          var content = reader.result;
          if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) {
            markAsReadAndPasteIfAllFilesAreRead();
            return
          }
          text[i] = content;
          markAsReadAndPasteIfAllFilesAreRead();
        };
        reader.readAsText(file);
      };
      for (var i = 0; i < files.length; i++) { readTextFromFile(files[i], i); }
    } else { // Normal drop
      // Don't do a replace if the drop happened inside of the selected text.
      if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
        cm.state.draggingText(e);
        // Ensure the editor is re-focused
        setTimeout(function () { return cm.display.input.focus(); }, 20);
        return
      }
      try {
        var text$1 = e.dataTransfer.getData("Text");
        if (text$1) {
          var selected;
          if (cm.state.draggingText && !cm.state.draggingText.copy)
            { selected = cm.listSelections(); }
          setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
          if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1)
            { replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag"); } }
          cm.replaceSelection(text$1, "around", "paste");
          cm.display.input.focus();
        }
      }
      catch(e$1){}
    }
  }

  function onDragStart(cm, e) {
    if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return }
    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return }

    e.dataTransfer.setData("Text", cm.getSelection());
    e.dataTransfer.effectAllowed = "copyMove";

    // Use dummy image instead of default browsers image.
    // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
    if (e.dataTransfer.setDragImage && !safari) {
      var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
      img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
      if (presto) {
        img.width = img.height = 1;
        cm.display.wrapper.appendChild(img);
        // Force a relayout, or Opera won't use our image for some obscure reason
        img._top = img.offsetTop;
      }
      e.dataTransfer.setDragImage(img, 0, 0);
      if (presto) { img.parentNode.removeChild(img); }
    }
  }

  function onDragOver(cm, e) {
    var pos = posFromMouse(cm, e);
    if (!pos) { return }
    var frag = document.createDocumentFragment();
    drawSelectionCursor(cm, pos, frag);
    if (!cm.display.dragCursor) {
      cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors");
      cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv);
    }
    removeChildrenAndAdd(cm.display.dragCursor, frag);
  }

  function clearDragCursor(cm) {
    if (cm.display.dragCursor) {
      cm.display.lineSpace.removeChild(cm.display.dragCursor);
      cm.display.dragCursor = null;
    }
  }

  // These must be handled carefully, because naively registering a
  // handler for each editor will cause the editors to never be
  // garbage collected.

  function forEachCodeMirror(f) {
    if (!document.getElementsByClassName) { return }
    var byClass = document.getElementsByClassName("CodeMirror"), editors = [];
    for (var i = 0; i < byClass.length; i++) {
      var cm = byClass[i].CodeMirror;
      if (cm) { editors.push(cm); }
    }
    if (editors.length) { editors[0].operation(function () {
      for (var i = 0; i < editors.length; i++) { f(editors[i]); }
    }); }
  }

  var globalsRegistered = false;
  function ensureGlobalHandlers() {
    if (globalsRegistered) { return }
    registerGlobalHandlers();
    globalsRegistered = true;
  }
  function registerGlobalHandlers() {
    // When the window resizes, we need to refresh active editors.
    var resizeTimer;
    on(window, "resize", function () {
      if (resizeTimer == null) { resizeTimer = setTimeout(function () {
        resizeTimer = null;
        forEachCodeMirror(onResize);
      }, 100); }
    });
    // When the window loses focus, we want to show the editor as blurred
    on(window, "blur", function () { return forEachCodeMirror(onBlur); });
  }
  // Called when the window resizes
  function onResize(cm) {
    var d = cm.display;
    // Might be a text scaling operation, clear size caches.
    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
    d.scrollbarsClipped = false;
    cm.setSize();
  }

  var keyNames = {
    3: "Pause", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
    19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
    36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
    46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod",
    106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 145: "ScrollLock",
    173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
    221: "]", 222: "'", 224: "Mod", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
    63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"
  };

  // Number keys
  for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i); }
  // Alphabetic keys
  for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1); }
  // Function keys
  for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2; }

  var keyMap = {};

  keyMap.basic = {
    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
    "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
    "Tab": "defaultTab", "Shift-Tab": "indentAuto",
    "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
    "Esc": "singleSelection"
  };
  // Note that the save and find-related commands aren't defined by
  // default. User code or addons can define them. Unknown commands
  // are simply ignored.
  keyMap.pcDefault = {
    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
    "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
    "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
    "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
    "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
    "fallthrough": "basic"
  };
  // Very basic readline/emacs-style bindings, which are standard on Mac.
  keyMap.emacsy = {
    "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
    "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp",
    "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine",
    "Ctrl-T": "transposeChars", "Ctrl-O": "openLine"
  };
  keyMap.macDefault = {
    "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
    "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
    "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore",
    "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
    "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
    "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
    "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
    "fallthrough": ["basic", "emacsy"]
  };
  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;

  // KEYMAP DISPATCH

  function normalizeKeyName(name) {
    var parts = name.split(/-(?!$)/);
    name = parts[parts.length - 1];
    var alt, ctrl, shift, cmd;
    for (var i = 0; i < parts.length - 1; i++) {
      var mod = parts[i];
      if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true; }
      else if (/^a(lt)?$/i.test(mod)) { alt = true; }
      else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true; }
      else if (/^s(hift)?$/i.test(mod)) { shift = true; }
      else { throw new Error("Unrecognized modifier name: " + mod) }
    }
    if (alt) { name = "Alt-" + name; }
    if (ctrl) { name = "Ctrl-" + name; }
    if (cmd) { name = "Cmd-" + name; }
    if (shift) { name = "Shift-" + name; }
    return name
  }

  // This is a kludge to keep keymaps mostly working as raw objects
  // (backwards compatibility) while at the same time support features
  // like normalization and multi-stroke key bindings. It compiles a
  // new normalized keymap, and then updates the old object to reflect
  // this.
  function normalizeKeyMap(keymap) {
    var copy = {};
    for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) {
      var value = keymap[keyname];
      if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue }
      if (value == "...") { delete keymap[keyname]; continue }

      var keys = map(keyname.split(" "), normalizeKeyName);
      for (var i = 0; i < keys.length; i++) {
        var val = (void 0), name = (void 0);
        if (i == keys.length - 1) {
          name = keys.join(" ");
          val = value;
        } else {
          name = keys.slice(0, i + 1).join(" ");
          val = "...";
        }
        var prev = copy[name];
        if (!prev) { copy[name] = val; }
        else if (prev != val) { throw new Error("Inconsistent bindings for " + name) }
      }
      delete keymap[keyname];
    } }
    for (var prop in copy) { keymap[prop] = copy[prop]; }
    return keymap
  }

  function lookupKey(key, map, handle, context) {
    map = getKeyMap(map);
    var found = map.call ? map.call(key, context) : map[key];
    if (found === false) { return "nothing" }
    if (found === "...") { return "multi" }
    if (found != null && handle(found)) { return "handled" }

    if (map.fallthrough) {
      if (Object.prototype.toString.call(map.fallthrough) != "[object Array]")
        { return lookupKey(key, map.fallthrough, handle, context) }
      for (var i = 0; i < map.fallthrough.length; i++) {
        var result = lookupKey(key, map.fallthrough[i], handle, context);
        if (result) { return result }
      }
    }
  }

  // Modifier key presses don't count as 'real' key presses for the
  // purpose of keymap fallthrough.
  function isModifierKey(value) {
    var name = typeof value == "string" ? value : keyNames[value.keyCode];
    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"
  }

  function addModifierNames(name, event, noShift) {
    var base = name;
    if (event.altKey && base != "Alt") { name = "Alt-" + name; }
    if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") { name = "Ctrl-" + name; }
    if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Mod") { name = "Cmd-" + name; }
    if (!noShift && event.shiftKey && base != "Shift") { name = "Shift-" + name; }
    return name
  }

  // Look up the name of a key as indicated by an event object.
  function keyName(event, noShift) {
    if (presto && event.keyCode == 34 && event["char"]) { return false }
    var name = keyNames[event.keyCode];
    if (name == null || event.altGraphKey) { return false }
    // Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause,
    // so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+)
    if (event.keyCode == 3 && event.code) { name = event.code; }
    return addModifierNames(name, event, noShift)
  }

  function getKeyMap(val) {
    return typeof val == "string" ? keyMap[val] : val
  }

  // Helper for deleting text near the selection(s), used to implement
  // backspace, delete, and similar functionality.
  function deleteNearSelection(cm, compute) {
    var ranges = cm.doc.sel.ranges, kill = [];
    // Build up a set of ranges to kill first, merging overlapping
    // ranges.
    for (var i = 0; i < ranges.length; i++) {
      var toKill = compute(ranges[i]);
      while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
        var replaced = kill.pop();
        if (cmp(replaced.from, toKill.from) < 0) {
          toKill.from = replaced.from;
          break
        }
      }
      kill.push(toKill);
    }
    // Next, remove those actual ranges.
    runInOp(cm, function () {
      for (var i = kill.length - 1; i >= 0; i--)
        { replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete"); }
      ensureCursorVisible(cm);
    });
  }

  function moveCharLogically(line, ch, dir) {
    var target = skipExtendingChars(line.text, ch + dir, dir);
    return target < 0 || target > line.text.length ? null : target
  }

  function moveLogically(line, start, dir) {
    var ch = moveCharLogically(line, start.ch, dir);
    return ch == null ? null : new Pos(start.line, ch, dir < 0 ? "after" : "before")
  }

  function endOfLine(visually, cm, lineObj, lineNo, dir) {
    if (visually) {
      if (cm.doc.direction == "rtl") { dir = -dir; }
      var order = getOrder(lineObj, cm.doc.direction);
      if (order) {
        var part = dir < 0 ? lst(order) : order[0];
        var moveInStorageOrder = (dir < 0) == (part.level == 1);
        var sticky = moveInStorageOrder ? "after" : "before";
        var ch;
        // With a wrapped rtl chunk (possibly spanning multiple bidi parts),
        // it could be that the last bidi part is not on the last visual line,
        // since visual lines contain content order-consecutive chunks.
        // Thus, in rtl, we are looking for the first (content-order) character
        // in the rtl chunk that is on the last line (that is, the same line
        // as the last (content-order) character).
        if (part.level > 0 || cm.doc.direction == "rtl") {
          var prep = prepareMeasureForLine(cm, lineObj);
          ch = dir < 0 ? lineObj.text.length - 1 : 0;
          var targetTop = measureCharPrepared(cm, prep, ch).top;
          ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch);
          if (sticky == "before") { ch = moveCharLogically(lineObj, ch, 1); }
        } else { ch = dir < 0 ? part.to : part.from; }
        return new Pos(lineNo, ch, sticky)
      }
    }
    return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? "before" : "after")
  }

  function moveVisually(cm, line, start, dir) {
    var bidi = getOrder(line, cm.doc.direction);
    if (!bidi) { return moveLogically(line, start, dir) }
    if (start.ch >= line.text.length) {
      start.ch = line.text.length;
      start.sticky = "before";
    } else if (start.ch <= 0) {
      start.ch = 0;
      start.sticky = "after";
    }
    var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos];
    if (cm.doc.direction == "ltr" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) {
      // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines,
      // nothing interesting happens.
      return moveLogically(line, start, dir)
    }

    var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); };
    var prep;
    var getWrappedLineExtent = function (ch) {
      if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} }
      prep = prep || prepareMeasureForLine(cm, line);
      return wrappedLineExtentChar(cm, line, prep, ch)
    };
    var wrappedLineExtent = getWrappedLineExtent(start.sticky == "before" ? mv(start, -1) : start.ch);

    if (cm.doc.direction == "rtl" || part.level == 1) {
      var moveInStorageOrder = (part.level == 1) == (dir < 0);
      var ch = mv(start, moveInStorageOrder ? 1 : -1);
      if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) {
        // Case 2: We move within an rtl part or in an rtl editor on the same visual line
        var sticky = moveInStorageOrder ? "before" : "after";
        return new Pos(start.line, ch, sticky)
      }
    }

    // Case 3: Could not move within this bidi part in this visual line, so leave
    // the current bidi part

    var searchInVisualLine = function (partPos, dir, wrappedLineExtent) {
      var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder
        ? new Pos(start.line, mv(ch, 1), "before")
        : new Pos(start.line, ch, "after"); };

      for (; partPos >= 0 && partPos < bidi.length; partPos += dir) {
        var part = bidi[partPos];
        var moveInStorageOrder = (dir > 0) == (part.level != 1);
        var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1);
        if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) }
        ch = moveInStorageOrder ? part.from : mv(part.to, -1);
        if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) }
      }
    };

    // Case 3a: Look for other bidi parts on the same visual line
    var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent);
    if (res) { return res }

    // Case 3b: Look for other bidi parts on the next visual line
    var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1);
    if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) {
      res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh));
      if (res) { return res }
    }

    // Case 4: Nowhere to move
    return null
  }

  // Commands are parameter-less actions that can be performed on an
  // editor, mostly used for keybindings.
  var commands = {
    selectAll: selectAll,
    singleSelection: function (cm) { return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); },
    killLine: function (cm) { return deleteNearSelection(cm, function (range) {
      if (range.empty()) {
        var len = getLine(cm.doc, range.head.line).text.length;
        if (range.head.ch == len && range.head.line < cm.lastLine())
          { return {from: range.head, to: Pos(range.head.line + 1, 0)} }
        else
          { return {from: range.head, to: Pos(range.head.line, len)} }
      } else {
        return {from: range.from(), to: range.to()}
      }
    }); },
    deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({
      from: Pos(range.from().line, 0),
      to: clipPos(cm.doc, Pos(range.to().line + 1, 0))
    }); }); },
    delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({
      from: Pos(range.from().line, 0), to: range.from()
    }); }); },
    delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) {
      var top = cm.charCoords(range.head, "div").top + 5;
      var leftPos = cm.coordsChar({left: 0, top: top}, "div");
      return {from: leftPos, to: range.from()}
    }); },
    delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) {
      var top = cm.charCoords(range.head, "div").top + 5;
      var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
      return {from: range.from(), to: rightPos }
    }); },
    undo: function (cm) { return cm.undo(); },
    redo: function (cm) { return cm.redo(); },
    undoSelection: function (cm) { return cm.undoSelection(); },
    redoSelection: function (cm) { return cm.redoSelection(); },
    goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); },
    goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); },
    goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); },
      {origin: "+move", bias: 1}
    ); },
    goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); },
      {origin: "+move", bias: 1}
    ); },
    goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); },
      {origin: "+move", bias: -1}
    ); },
    goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) {
      var top = cm.cursorCoords(range.head, "div").top + 5;
      return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")
    }, sel_move); },
    goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) {
      var top = cm.cursorCoords(range.head, "div").top + 5;
      return cm.coordsChar({left: 0, top: top}, "div")
    }, sel_move); },
    goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) {
      var top = cm.cursorCoords(range.head, "div").top + 5;
      var pos = cm.coordsChar({left: 0, top: top}, "div");
      if (pos.ch < cm.getLine(pos.line).search(/\S/)) { return lineStartSmart(cm, range.head) }
      return pos
    }, sel_move); },
    goLineUp: function (cm) { return cm.moveV(-1, "line"); },
    goLineDown: function (cm) { return cm.moveV(1, "line"); },
    goPageUp: function (cm) { return cm.moveV(-1, "page"); },
    goPageDown: function (cm) { return cm.moveV(1, "page"); },
    goCharLeft: function (cm) { return cm.moveH(-1, "char"); },
    goCharRight: function (cm) { return cm.moveH(1, "char"); },
    goColumnLeft: function (cm) { return cm.moveH(-1, "column"); },
    goColumnRight: function (cm) { return cm.moveH(1, "column"); },
    goWordLeft: function (cm) { return cm.moveH(-1, "word"); },
    goGroupRight: function (cm) { return cm.moveH(1, "group"); },
    goGroupLeft: function (cm) { return cm.moveH(-1, "group"); },
    goWordRight: function (cm) { return cm.moveH(1, "word"); },
    delCharBefore: function (cm) { return cm.deleteH(-1, "codepoint"); },
    delCharAfter: function (cm) { return cm.deleteH(1, "char"); },
    delWordBefore: function (cm) { return cm.deleteH(-1, "word"); },
    delWordAfter: function (cm) { return cm.deleteH(1, "word"); },
    delGroupBefore: function (cm) { return cm.deleteH(-1, "group"); },
    delGroupAfter: function (cm) { return cm.deleteH(1, "group"); },
    indentAuto: function (cm) { return cm.indentSelection("smart"); },
    indentMore: function (cm) { return cm.indentSelection("add"); },
    indentLess: function (cm) { return cm.indentSelection("subtract"); },
    insertTab: function (cm) { return cm.replaceSelection("\t"); },
    insertSoftTab: function (cm) {
      var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;
      for (var i = 0; i < ranges.length; i++) {
        var pos = ranges[i].from();
        var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);
        spaces.push(spaceStr(tabSize - col % tabSize));
      }
      cm.replaceSelections(spaces);
    },
    defaultTab: function (cm) {
      if (cm.somethingSelected()) { cm.indentSelection("add"); }
      else { cm.execCommand("insertTab"); }
    },
    // Swap the two chars left and right of each selection's head.
    // Move cursor behind the two swapped characters afterwards.
    //
    // Doesn't consider line feeds a character.
    // Doesn't scan more than one line above to find a character.
    // Doesn't do anything on an empty line.
    // Doesn't do anything with non-empty selections.
    transposeChars: function (cm) { return runInOp(cm, function () {
      var ranges = cm.listSelections(), newSel = [];
      for (var i = 0; i < ranges.length; i++) {
        if (!ranges[i].empty()) { continue }
        var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
        if (line) {
          if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1); }
          if (cur.ch > 0) {
            cur = new Pos(cur.line, cur.ch + 1);
            cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
                            Pos(cur.line, cur.ch - 2), cur, "+transpose");
          } else if (cur.line > cm.doc.first) {
            var prev = getLine(cm.doc, cur.line - 1).text;
            if (prev) {
              cur = new Pos(cur.line, 1);
              cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +
                              prev.charAt(prev.length - 1),
                              Pos(cur.line - 1, prev.length - 1), cur, "+transpose");
            }
          }
        }
        newSel.push(new Range(cur, cur));
      }
      cm.setSelections(newSel);
    }); },
    newlineAndIndent: function (cm) { return runInOp(cm, function () {
      var sels = cm.listSelections();
      for (var i = sels.length - 1; i >= 0; i--)
        { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input"); }
      sels = cm.listSelections();
      for (var i$1 = 0; i$1 < sels.length; i$1++)
        { cm.indentLine(sels[i$1].from().line, null, true); }
      ensureCursorVisible(cm);
    }); },
    openLine: function (cm) { return cm.replaceSelection("\n", "start"); },
    toggleOverwrite: function (cm) { return cm.toggleOverwrite(); }
  };


  function lineStart(cm, lineN) {
    var line = getLine(cm.doc, lineN);
    var visual = visualLine(line);
    if (visual != line) { lineN = lineNo(visual); }
    return endOfLine(true, cm, visual, lineN, 1)
  }
  function lineEnd(cm, lineN) {
    var line = getLine(cm.doc, lineN);
    var visual = visualLineEnd(line);
    if (visual != line) { lineN = lineNo(visual); }
    return endOfLine(true, cm, line, lineN, -1)
  }
  function lineStartSmart(cm, pos) {
    var start = lineStart(cm, pos.line);
    var line = getLine(cm.doc, start.line);
    var order = getOrder(line, cm.doc.direction);
    if (!order || order[0].level == 0) {
      var firstNonWS = Math.max(start.ch, line.text.search(/\S/));
      var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;
      return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky)
    }
    return start
  }

  // Run a handler that was bound to a key.
  function doHandleBinding(cm, bound, dropShift) {
    if (typeof bound == "string") {
      bound = commands[bound];
      if (!bound) { return false }
    }
    // Ensure previous input has been read, so that the handler sees a
    // consistent view of the document
    cm.display.input.ensurePolled();
    var prevShift = cm.display.shift, done = false;
    try {
      if (cm.isReadOnly()) { cm.state.suppressEdits = true; }
      if (dropShift) { cm.display.shift = false; }
      done = bound(cm) != Pass;
    } finally {
      cm.display.shift = prevShift;
      cm.state.suppressEdits = false;
    }
    return done
  }

  function lookupKeyForEditor(cm, name, handle) {
    for (var i = 0; i < cm.state.keyMaps.length; i++) {
      var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);
      if (result) { return result }
    }
    return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))
      || lookupKey(name, cm.options.keyMap, handle, cm)
  }

  // Note that, despite the name, this function is also used to check
  // for bound mouse clicks.

  var stopSeq = new Delayed;

  function dispatchKey(cm, name, e, handle) {
    var seq = cm.state.keySeq;
    if (seq) {
      if (isModifierKey(name)) { return "handled" }
      if (/\'$/.test(name))
        { cm.state.keySeq = null; }
      else
        { stopSeq.set(50, function () {
          if (cm.state.keySeq == seq) {
            cm.state.keySeq = null;
            cm.display.input.reset();
          }
        }); }
      if (dispatchKeyInner(cm, seq + " " + name, e, handle)) { return true }
    }
    return dispatchKeyInner(cm, name, e, handle)
  }

  function dispatchKeyInner(cm, name, e, handle) {
    var result = lookupKeyForEditor(cm, name, handle);

    if (result == "multi")
      { cm.state.keySeq = name; }
    if (result == "handled")
      { signalLater(cm, "keyHandled", cm, name, e); }

    if (result == "handled" || result == "multi") {
      e_preventDefault(e);
      restartBlink(cm);
    }

    return !!result
  }

  // Handle a key from the keydown event.
  function handleKeyBinding(cm, e) {
    var name = keyName(e, true);
    if (!name) { return false }

    if (e.shiftKey && !cm.state.keySeq) {
      // First try to resolve full name (including 'Shift-'). Failing
      // that, see if there is a cursor-motion command (starting with
      // 'go') bound to the keyname without 'Shift-'.
      return dispatchKey(cm, "Shift-" + name, e, function (b) { return doHandleBinding(cm, b, true); })
          || dispatchKey(cm, name, e, function (b) {
               if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
                 { return doHandleBinding(cm, b) }
             })
    } else {
      return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); })
    }
  }

  // Handle a key from the keypress event
  function handleCharBinding(cm, e, ch) {
    return dispatchKey(cm, "'" + ch + "'", e, function (b) { return doHandleBinding(cm, b, true); })
  }

  var lastStoppedKey = null;
  function onKeyDown(e) {
    var cm = this;
    if (e.target && e.target != cm.display.input.getField()) { return }
    cm.curOp.focus = activeElt(root(cm));
    if (signalDOMEvent(cm, e)) { return }
    // IE does strange things with escape.
    if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false; }
    var code = e.keyCode;
    cm.display.shift = code == 16 || e.shiftKey;
    var handled = handleKeyBinding(cm, e);
    if (presto) {
      lastStoppedKey = handled ? code : null;
      // Opera has no cut event... we try to at least catch the key combo
      if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
        { cm.replaceSelection("", null, "cut"); }
    }
    if (gecko && !mac && !handled && code == 46 && e.shiftKey && !e.ctrlKey && document.execCommand)
      { document.execCommand("cut"); }

    // Turn mouse into crosshair when Alt is held on Mac.
    if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
      { showCrossHair(cm); }
  }

  function showCrossHair(cm) {
    var lineDiv = cm.display.lineDiv;
    addClass(lineDiv, "CodeMirror-crosshair");

    function up(e) {
      if (e.keyCode == 18 || !e.altKey) {
        rmClass(lineDiv, "CodeMirror-crosshair");
        off(document, "keyup", up);
        off(document, "mouseover", up);
      }
    }
    on(document, "keyup", up);
    on(document, "mouseover", up);
  }

  function onKeyUp(e) {
    if (e.keyCode == 16) { this.doc.sel.shift = false; }
    signalDOMEvent(this, e);
  }

  function onKeyPress(e) {
    var cm = this;
    if (e.target && e.target != cm.display.input.getField()) { return }
    if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return }
    var keyCode = e.keyCode, charCode = e.charCode;
    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return}
    if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return }
    var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
    // Some browsers fire keypress events for backspace
    if (ch == "\x08") { return }
    if (handleCharBinding(cm, e, ch)) { return }
    cm.display.input.onKeyPress(e);
  }

  var DOUBLECLICK_DELAY = 400;

  var PastClick = function(time, pos, button) {
    this.time = time;
    this.pos = pos;
    this.button = button;
  };

  PastClick.prototype.compare = function (time, pos, button) {
    return this.time + DOUBLECLICK_DELAY > time &&
      cmp(pos, this.pos) == 0 && button == this.button
  };

  var lastClick, lastDoubleClick;
  function clickRepeat(pos, button) {
    var now = +new Date;
    if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) {
      lastClick = lastDoubleClick = null;
      return "triple"
    } else if (lastClick && lastClick.compare(now, pos, button)) {
      lastDoubleClick = new PastClick(now, pos, button);
      lastClick = null;
      return "double"
    } else {
      lastClick = new PastClick(now, pos, button);
      lastDoubleClick = null;
      return "single"
    }
  }

  // A mouse down can be a single click, double click, triple click,
  // start of selection drag, start of text drag, new cursor
  // (ctrl-click), rectangle drag (alt-drag), or xwin
  // middle-click-paste. Or it might be a click on something we should
  // not interfere with, such as a scrollbar or widget.
  function onMouseDown(e) {
    var cm = this, display = cm.display;
    if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return }
    display.input.ensurePolled();
    display.shift = e.shiftKey;

    if (eventInWidget(display, e)) {
      if (!webkit) {
        // Briefly turn off draggability, to allow widgets to do
        // normal dragging things.
        display.scroller.draggable = false;
        setTimeout(function () { return display.scroller.draggable = true; }, 100);
      }
      return
    }
    if (clickInGutter(cm, e)) { return }
    var pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : "single";
    win(cm).focus();

    // #3261: make sure, that we're not starting a second selection
    if (button == 1 && cm.state.selectingText)
      { cm.state.selectingText(e); }

    if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return }

    if (button == 1) {
      if (pos) { leftButtonDown(cm, pos, repeat, e); }
      else if (e_target(e) == display.scroller) { e_preventDefault(e); }
    } else if (button == 2) {
      if (pos) { extendSelection(cm.doc, pos); }
      setTimeout(function () { return display.input.focus(); }, 20);
    } else if (button == 3) {
      if (captureRightClick) { cm.display.input.onContextMenu(e); }
      else { delayBlurEvent(cm); }
    }
  }

  function handleMappedButton(cm, button, pos, repeat, event) {
    var name = "Click";
    if (repeat == "double") { name = "Double" + name; }
    else if (repeat == "triple") { name = "Triple" + name; }
    name = (button == 1 ? "Left" : button == 2 ? "Middle" : "Right") + name;

    return dispatchKey(cm,  addModifierNames(name, event), event, function (bound) {
      if (typeof bound == "string") { bound = commands[bound]; }
      if (!bound) { return false }
      var done = false;
      try {
        if (cm.isReadOnly()) { cm.state.suppressEdits = true; }
        done = bound(cm, pos) != Pass;
      } finally {
        cm.state.suppressEdits = false;
      }
      return done
    })
  }

  function configureMouse(cm, repeat, event) {
    var option = cm.getOption("configureMouse");
    var value = option ? option(cm, repeat, event) : {};
    if (value.unit == null) {
      var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey;
      value.unit = rect ? "rectangle" : repeat == "single" ? "char" : repeat == "double" ? "word" : "line";
    }
    if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey; }
    if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey; }
    if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey); }
    return value
  }

  function leftButtonDown(cm, pos, repeat, event) {
    if (ie) { setTimeout(bind(ensureFocus, cm), 0); }
    else { cm.curOp.focus = activeElt(root(cm)); }

    var behavior = configureMouse(cm, repeat, event);

    var sel = cm.doc.sel, contained;
    if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&
        repeat == "single" && (contained = sel.contains(pos)) > -1 &&
        (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) &&
        (cmp(contained.to(), pos) > 0 || pos.xRel < 0))
      { leftButtonStartDrag(cm, event, pos, behavior); }
    else
      { leftButtonSelect(cm, event, pos, behavior); }
  }

  // Start a text drag. When it ends, see if any dragging actually
  // happen, and treat as a click if it didn't.
  function leftButtonStartDrag(cm, event, pos, behavior) {
    var display = cm.display, moved = false;
    var dragEnd = operation(cm, function (e) {
      if (webkit) { display.scroller.draggable = false; }
      cm.state.draggingText = false;
      if (cm.state.delayingBlurEvent) {
        if (cm.hasFocus()) { cm.state.delayingBlurEvent = false; }
        else { delayBlurEvent(cm); }
      }
      off(display.wrapper.ownerDocument, "mouseup", dragEnd);
      off(display.wrapper.ownerDocument, "mousemove", mouseMove);
      off(display.scroller, "dragstart", dragStart);
      off(display.scroller, "drop", dragEnd);
      if (!moved) {
        e_preventDefault(e);
        if (!behavior.addNew)
          { extendSelection(cm.doc, pos, null, null, behavior.extend); }
        // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
        if ((webkit && !safari) || ie && ie_version == 9)
          { setTimeout(function () {display.wrapper.ownerDocument.body.focus({preventScroll: true}); display.input.focus();}, 20); }
        else
          { display.input.focus(); }
      }
    });
    var mouseMove = function(e2) {
      moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10;
    };
    var dragStart = function () { return moved = true; };
    // Let the drag handler handle this.
    if (webkit) { display.scroller.draggable = true; }
    cm.state.draggingText = dragEnd;
    dragEnd.copy = !behavior.moveOnDrag;
    on(display.wrapper.ownerDocument, "mouseup", dragEnd);
    on(display.wrapper.ownerDocument, "mousemove", mouseMove);
    on(display.scroller, "dragstart", dragStart);
    on(display.scroller, "drop", dragEnd);

    cm.state.delayingBlurEvent = true;
    setTimeout(function () { return display.input.focus(); }, 20);
    // IE's approach to draggable
    if (display.scroller.dragDrop) { display.scroller.dragDrop(); }
  }

  function rangeForUnit(cm, pos, unit) {
    if (unit == "char") { return new Range(pos, pos) }
    if (unit == "word") { return cm.findWordAt(pos) }
    if (unit == "line") { return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) }
    var result = unit(cm, pos);
    return new Range(result.from, result.to)
  }

  // Normal selection, as opposed to text dragging.
  function leftButtonSelect(cm, event, start, behavior) {
    if (ie) { delayBlurEvent(cm); }
    var display = cm.display, doc = cm.doc;
    e_preventDefault(event);

    var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;
    if (behavior.addNew && !behavior.extend) {
      ourIndex = doc.sel.contains(start);
      if (ourIndex > -1)
        { ourRange = ranges[ourIndex]; }
      else
        { ourRange = new Range(start, start); }
    } else {
      ourRange = doc.sel.primary();
      ourIndex = doc.sel.primIndex;
    }

    if (behavior.unit == "rectangle") {
      if (!behavior.addNew) { ourRange = new Range(start, start); }
      start = posFromMouse(cm, event, true, true);
      ourIndex = -1;
    } else {
      var range = rangeForUnit(cm, start, behavior.unit);
      if (behavior.extend)
        { ourRange = extendRange(ourRange, range.anchor, range.head, behavior.extend); }
      else
        { ourRange = range; }
    }

    if (!behavior.addNew) {
      ourIndex = 0;
      setSelection(doc, new Selection([ourRange], 0), sel_mouse);
      startSel = doc.sel;
    } else if (ourIndex == -1) {
      ourIndex = ranges.length;
      setSelection(doc, normalizeSelection(cm, ranges.concat([ourRange]), ourIndex),
                   {scroll: false, origin: "*mouse"});
    } else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == "char" && !behavior.extend) {
      setSelection(doc, normalizeSelection(cm, ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),
                   {scroll: false, origin: "*mouse"});
      startSel = doc.sel;
    } else {
      replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
    }

    var lastPos = start;
    function extendTo(pos) {
      if (cmp(lastPos, pos) == 0) { return }
      lastPos = pos;

      if (behavior.unit == "rectangle") {
        var ranges = [], tabSize = cm.options.tabSize;
        var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
        var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
        var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);
        for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
             line <= end; line++) {
          var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);
          if (left == right)
            { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))); }
          else if (text.length > leftPos)
            { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))); }
        }
        if (!ranges.length) { ranges.push(new Range(start, start)); }
        setSelection(doc, normalizeSelection(cm, startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
                     {origin: "*mouse", scroll: false});
        cm.scrollIntoView(pos);
      } else {
        var oldRange = ourRange;
        var range = rangeForUnit(cm, pos, behavior.unit);
        var anchor = oldRange.anchor, head;
        if (cmp(range.anchor, anchor) > 0) {
          head = range.head;
          anchor = minPos(oldRange.from(), range.anchor);
        } else {
          head = range.anchor;
          anchor = maxPos(oldRange.to(), range.head);
        }
        var ranges$1 = startSel.ranges.slice(0);
        ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head));
        setSelection(doc, normalizeSelection(cm, ranges$1, ourIndex), sel_mouse);
      }
    }

    var editorSize = display.wrapper.getBoundingClientRect();
    // Used to ensure timeout re-tries don't fire when another extend
    // happened in the meantime (clearTimeout isn't reliable -- at
    // least on Chrome, the timeouts still happen even when cleared,
    // if the clear happens after their scheduled firing time).
    var counter = 0;

    function extend(e) {
      var curCount = ++counter;
      var cur = posFromMouse(cm, e, true, behavior.unit == "rectangle");
      if (!cur) { return }
      if (cmp(cur, lastPos) != 0) {
        cm.curOp.focus = activeElt(root(cm));
        extendTo(cur);
        var visible = visibleLines(display, doc);
        if (cur.line >= visible.to || cur.line < visible.from)
          { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e); }}), 150); }
      } else {
        var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
        if (outside) { setTimeout(operation(cm, function () {
          if (counter != curCount) { return }
          display.scroller.scrollTop += outside;
          extend(e);
        }), 50); }
      }
    }

    function done(e) {
      cm.state.selectingText = false;
      counter = Infinity;
      // If e is null or undefined we interpret this as someone trying
      // to explicitly cancel the selection rather than the user
      // letting go of the mouse button.
      if (e) {
        e_preventDefault(e);
        display.input.focus();
      }
      off(display.wrapper.ownerDocument, "mousemove", move);
      off(display.wrapper.ownerDocument, "mouseup", up);
      doc.history.lastSelOrigin = null;
    }

    var move = operation(cm, function (e) {
      if (e.buttons === 0 || !e_button(e)) { done(e); }
      else { extend(e); }
    });
    var up = operation(cm, done);
    cm.state.selectingText = up;
    on(display.wrapper.ownerDocument, "mousemove", move);
    on(display.wrapper.ownerDocument, "mouseup", up);
  }

  // Used when mouse-selecting to adjust the anchor to the proper side
  // of a bidi jump depending on the visual position of the head.
  function bidiSimplify(cm, range) {
    var anchor = range.anchor;
    var head = range.head;
    var anchorLine = getLine(cm.doc, anchor.line);
    if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range }
    var order = getOrder(anchorLine);
    if (!order) { return range }
    var index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index];
    if (part.from != anchor.ch && part.to != anchor.ch) { return range }
    var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1);
    if (boundary == 0 || boundary == order.length) { return range }

    // Compute the relative visual position of the head compared to the
    // anchor (<0 is to the left, >0 to the right)
    var leftSide;
    if (head.line != anchor.line) {
      leftSide = (head.line - anchor.line) * (cm.doc.direction == "ltr" ? 1 : -1) > 0;
    } else {
      var headIndex = getBidiPartAt(order, head.ch, head.sticky);
      var dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1);
      if (headIndex == boundary - 1 || headIndex == boundary)
        { leftSide = dir < 0; }
      else
        { leftSide = dir > 0; }
    }

    var usePart = order[boundary + (leftSide ? -1 : 0)];
    var from = leftSide == (usePart.level == 1);
    var ch = from ? usePart.from : usePart.to, sticky = from ? "after" : "before";
    return anchor.ch == ch && anchor.sticky == sticky ? range : new Range(new Pos(anchor.line, ch, sticky), head)
  }


  // Determines whether an event happened in the gutter, and fires the
  // handlers for the corresponding event.
  function gutterEvent(cm, e, type, prevent) {
    var mX, mY;
    if (e.touches) {
      mX = e.touches[0].clientX;
      mY = e.touches[0].clientY;
    } else {
      try { mX = e.clientX; mY = e.clientY; }
      catch(e$1) { return false }
    }
    if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false }
    if (prevent) { e_preventDefault(e); }

    var display = cm.display;
    var lineBox = display.lineDiv.getBoundingClientRect();

    if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) }
    mY -= lineBox.top - display.viewOffset;

    for (var i = 0; i < cm.display.gutterSpecs.length; ++i) {
      var g = display.gutters.childNodes[i];
      if (g && g.getBoundingClientRect().right >= mX) {
        var line = lineAtHeight(cm.doc, mY);
        var gutter = cm.display.gutterSpecs[i];
        signal(cm, type, cm, line, gutter.className, e);
        return e_defaultPrevented(e)
      }
    }
  }

  function clickInGutter(cm, e) {
    return gutterEvent(cm, e, "gutterClick", true)
  }

  // CONTEXT MENU HANDLING

  // To make the context menu work, we need to briefly unhide the
  // textarea (making it as unobtrusive as possible) to let the
  // right-click take effect on it.
  function onContextMenu(cm, e) {
    if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return }
    if (signalDOMEvent(cm, e, "contextmenu")) { return }
    if (!captureRightClick) { cm.display.input.onContextMenu(e); }
  }

  function contextMenuInGutter(cm, e) {
    if (!hasHandler(cm, "gutterContextMenu")) { return false }
    return gutterEvent(cm, e, "gutterContextMenu", false)
  }

  function themeChanged(cm) {
    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
      cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
    clearCaches(cm);
  }

  var Init = {toString: function(){return "CodeMirror.Init"}};

  var defaults = {};
  var optionHandlers = {};

  function defineOptions(CodeMirror) {
    var optionHandlers = CodeMirror.optionHandlers;

    function option(name, deflt, handle, notOnInit) {
      CodeMirror.defaults[name] = deflt;
      if (handle) { optionHandlers[name] =
        notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old); }} : handle; }
    }

    CodeMirror.defineOption = option;

    // Passed to option handlers when there is no old value.
    CodeMirror.Init = Init;

    // These two are, on init, called from the constructor because they
    // have to be initialized before the editor can start at all.
    option("value", "", function (cm, val) { return cm.setValue(val); }, true);
    option("mode", null, function (cm, val) {
      cm.doc.modeOption = val;
      loadMode(cm);
    }, true);

    option("indentUnit", 2, loadMode, true);
    option("indentWithTabs", false);
    option("smartIndent", true);
    option("tabSize", 4, function (cm) {
      resetModeState(cm);
      clearCaches(cm);
      regChange(cm);
    }, true);

    option("lineSeparator", null, function (cm, val) {
      cm.doc.lineSep = val;
      if (!val) { return }
      var newBreaks = [], lineNo = cm.doc.first;
      cm.doc.iter(function (line) {
        for (var pos = 0;;) {
          var found = line.text.indexOf(val, pos);
          if (found == -1) { break }
          pos = found + val.length;
          newBreaks.push(Pos(lineNo, found));
        }
        lineNo++;
      });
      for (var i = newBreaks.length - 1; i >= 0; i--)
        { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)); }
    });
    option("specialChars", /[\u0000-\u001f\u007f-\u009f\u00ad\u061c\u200b\u200e\u200f\u2028\u2029\u202d\u202e\u2066\u2067\u2069\ufeff\ufff9-\ufffc]/g, function (cm, val, old) {
      cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
      if (old != Init) { cm.refresh(); }
    });
    option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true);
    option("electricChars", true);
    option("inputStyle", mobile ? "contenteditable" : "textarea", function () {
      throw new Error("inputStyle can not (yet) be changed in a running editor") // FIXME
    }, true);
    option("spellcheck", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true);
    option("autocorrect", false, function (cm, val) { return cm.getInputField().autocorrect = val; }, true);
    option("autocapitalize", false, function (cm, val) { return cm.getInputField().autocapitalize = val; }, true);
    option("rtlMoveVisually", !windows);
    option("wholeLineUpdateBefore", true);

    option("theme", "default", function (cm) {
      themeChanged(cm);
      updateGutters(cm);
    }, true);
    option("keyMap", "default", function (cm, val, old) {
      var next = getKeyMap(val);
      var prev = old != Init && getKeyMap(old);
      if (prev && prev.detach) { prev.detach(cm, next); }
      if (next.attach) { next.attach(cm, prev || null); }
    });
    option("extraKeys", null);
    option("configureMouse", null);

    option("lineWrapping", false, wrappingChanged, true);
    option("gutters", [], function (cm, val) {
      cm.display.gutterSpecs = getGutters(val, cm.options.lineNumbers);
      updateGutters(cm);
    }, true);
    option("fixedGutter", true, function (cm, val) {
      cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
      cm.refresh();
    }, true);
    option("coverGutterNextToScrollbar", false, function (cm) { return updateScrollbars(cm); }, true);
    option("scrollbarStyle", "native", function (cm) {
      initScrollbars(cm);
      updateScrollbars(cm);
      cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);
      cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);
    }, true);
    option("lineNumbers", false, function (cm, val) {
      cm.display.gutterSpecs = getGutters(cm.options.gutters, val);
      updateGutters(cm);
    }, true);
    option("firstLineNumber", 1, updateGutters, true);
    option("lineNumberFormatter", function (integer) { return integer; }, updateGutters, true);
    option("showCursorWhenSelecting", false, updateSelection, true);

    option("resetSelectionOnContextMenu", true);
    option("lineWiseCopyCut", true);
    option("pasteLinesPerSelection", true);
    option("selectionsMayTouch", false);

    option("readOnly", false, function (cm, val) {
      if (val == "nocursor") {
        onBlur(cm);
        cm.display.input.blur();
      }
      cm.display.input.readOnlyChanged(val);
    });

    option("screenReaderLabel", null, function (cm, val) {
      val = (val === '') ? null : val;
      cm.display.input.screenReaderLabelChanged(val);
    });

    option("disableInput", false, function (cm, val) {if (!val) { cm.display.input.reset(); }}, true);
    option("dragDrop", true, dragDropChanged);
    option("allowDropFileTypes", null);

    option("cursorBlinkRate", 530);
    option("cursorScrollMargin", 0);
    option("cursorHeight", 1, updateSelection, true);
    option("singleCursorHeightPerLine", true, updateSelection, true);
    option("workTime", 100);
    option("workDelay", 100);
    option("flattenSpans", true, resetModeState, true);
    option("addModeClass", false, resetModeState, true);
    option("pollInterval", 100);
    option("undoDepth", 200, function (cm, val) { return cm.doc.history.undoDepth = val; });
    option("historyEventDelay", 1250);
    option("viewportMargin", 10, function (cm) { return cm.refresh(); }, true);
    option("maxHighlightLength", 10000, resetModeState, true);
    option("moveInputWithCursor", true, function (cm, val) {
      if (!val) { cm.display.input.resetPosition(); }
    });

    option("tabindex", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || ""; });
    option("autofocus", null);
    option("direction", "ltr", function (cm, val) { return cm.doc.setDirection(val); }, true);
    option("phrases", null);
  }

  function dragDropChanged(cm, value, old) {
    var wasOn = old && old != Init;
    if (!value != !wasOn) {
      var funcs = cm.display.dragFunctions;
      var toggle = value ? on : off;
      toggle(cm.display.scroller, "dragstart", funcs.start);
      toggle(cm.display.scroller, "dragenter", funcs.enter);
      toggle(cm.display.scroller, "dragover", funcs.over);
      toggle(cm.display.scroller, "dragleave", funcs.leave);
      toggle(cm.display.scroller, "drop", funcs.drop);
    }
  }

  function wrappingChanged(cm) {
    if (cm.options.lineWrapping) {
      addClass(cm.display.wrapper, "CodeMirror-wrap");
      cm.display.sizer.style.minWidth = "";
      cm.display.sizerWidth = null;
    } else {
      rmClass(cm.display.wrapper, "CodeMirror-wrap");
      findMaxLine(cm);
    }
    estimateLineHeights(cm);
    regChange(cm);
    clearCaches(cm);
    setTimeout(function () { return updateScrollbars(cm); }, 100);
  }

  // A CodeMirror instance represents an editor. This is the object
  // that user code is usually dealing with.

  function CodeMirror(place, options) {
    var this$1 = this;

    if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) }

    this.options = options = options ? copyObj(options) : {};
    // Determine effective options based on given values and defaults.
    copyObj(defaults, options, false);

    var doc = options.value;
    if (typeof doc == "string") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction); }
    else if (options.mode) { doc.modeOption = options.mode; }
    this.doc = doc;

    var input = new CodeMirror.inputStyles[options.inputStyle](this);
    var display = this.display = new Display(place, doc, input, options);
    display.wrapper.CodeMirror = this;
    themeChanged(this);
    if (options.lineWrapping)
      { this.display.wrapper.className += " CodeMirror-wrap"; }
    initScrollbars(this);

    this.state = {
      keyMaps: [],  // stores maps added by addKeyMap
      overlays: [], // highlighting overlays, as added by addOverlay
      modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info
      overwrite: false,
      delayingBlurEvent: false,
      focused: false,
      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
      pasteIncoming: -1, cutIncoming: -1, // help recognize paste/cut edits in input.poll
      selectingText: false,
      draggingText: false,
      highlight: new Delayed(), // stores highlight worker timeout
      keySeq: null,  // Unfinished key sequence
      specialChars: null
    };

    if (options.autofocus && !mobile) { display.input.focus(); }

    // Override magic textarea content restore that IE sometimes does
    // on our hidden textarea on reload
    if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20); }

    registerEventHandlers(this);
    ensureGlobalHandlers();

    startOperation(this);
    this.curOp.forceUpdate = true;
    attachDoc(this, doc);

    if ((options.autofocus && !mobile) || this.hasFocus())
      { setTimeout(function () {
        if (this$1.hasFocus() && !this$1.state.focused) { onFocus(this$1); }
      }, 20); }
    else
      { onBlur(this); }

    for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt))
      { optionHandlers[opt](this, options[opt], Init); } }
    maybeUpdateLineNumberWidth(this);
    if (options.finishInit) { options.finishInit(this); }
    for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this); }
    endOperation(this);
    // Suppress optimizelegibility in Webkit, since it breaks text
    // measuring on line wrapping boundaries.
    if (webkit && options.lineWrapping &&
        getComputedStyle(display.lineDiv).textRendering == "optimizelegibility")
      { display.lineDiv.style.textRendering = "auto"; }
  }

  // The default configuration options.
  CodeMirror.defaults = defaults;
  // Functions to run when options are changed.
  CodeMirror.optionHandlers = optionHandlers;

  // Attach the necessary event handlers when initializing the editor
  function registerEventHandlers(cm) {
    var d = cm.display;
    on(d.scroller, "mousedown", operation(cm, onMouseDown));
    // Older IE's will not fire a second mousedown for a double click
    if (ie && ie_version < 11)
      { on(d.scroller, "dblclick", operation(cm, function (e) {
        if (signalDOMEvent(cm, e)) { return }
        var pos = posFromMouse(cm, e);
        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return }
        e_preventDefault(e);
        var word = cm.findWordAt(pos);
        extendSelection(cm.doc, word.anchor, word.head);
      })); }
    else
      { on(d.scroller, "dblclick", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }); }
    // Some browsers fire contextmenu *after* opening the menu, at
    // which point we can't mess with it anymore. Context menu is
    // handled in onMouseDown for these browsers.
    on(d.scroller, "contextmenu", function (e) { return onContextMenu(cm, e); });
    on(d.input.getField(), "contextmenu", function (e) {
      if (!d.scroller.contains(e.target)) { onContextMenu(cm, e); }
    });

    // Used to suppress mouse event handling when a touch happens
    var touchFinished, prevTouch = {end: 0};
    function finishTouch() {
      if (d.activeTouch) {
        touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000);
        prevTouch = d.activeTouch;
        prevTouch.end = +new Date;
      }
    }
    function isMouseLikeTouchEvent(e) {
      if (e.touches.length != 1) { return false }
      var touch = e.touches[0];
      return touch.radiusX <= 1 && touch.radiusY <= 1
    }
    function farAway(touch, other) {
      if (other.left == null) { return true }
      var dx = other.left - touch.left, dy = other.top - touch.top;
      return dx * dx + dy * dy > 20 * 20
    }
    on(d.scroller, "touchstart", function (e) {
      if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) {
        d.input.ensurePolled();
        clearTimeout(touchFinished);
        var now = +new Date;
        d.activeTouch = {start: now, moved: false,
                         prev: now - prevTouch.end <= 300 ? prevTouch : null};
        if (e.touches.length == 1) {
          d.activeTouch.left = e.touches[0].pageX;
          d.activeTouch.top = e.touches[0].pageY;
        }
      }
    });
    on(d.scroller, "touchmove", function () {
      if (d.activeTouch) { d.activeTouch.moved = true; }
    });
    on(d.scroller, "touchend", function (e) {
      var touch = d.activeTouch;
      if (touch && !eventInWidget(d, e) && touch.left != null &&
          !touch.moved && new Date - touch.start < 300) {
        var pos = cm.coordsChar(d.activeTouch, "page"), range;
        if (!touch.prev || farAway(touch, touch.prev)) // Single tap
          { range = new Range(pos, pos); }
        else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap
          { range = cm.findWordAt(pos); }
        else // Triple tap
          { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))); }
        cm.setSelection(range.anchor, range.head);
        cm.focus();
        e_preventDefault(e);
      }
      finishTouch();
    });
    on(d.scroller, "touchcancel", finishTouch);

    // Sync scrolling between fake scrollbars and real scrollable
    // area, ensure viewport is updated when scrolling.
    on(d.scroller, "scroll", function () {
      if (d.scroller.clientHeight) {
        updateScrollTop(cm, d.scroller.scrollTop);
        setScrollLeft(cm, d.scroller.scrollLeft, true);
        signal(cm, "scroll", cm);
      }
    });

    // Listen to wheel events in order to try and update the viewport on time.
    on(d.scroller, "mousewheel", function (e) { return onScrollWheel(cm, e); });
    on(d.scroller, "DOMMouseScroll", function (e) { return onScrollWheel(cm, e); });

    // Prevent wrapper from ever scrolling
    on(d.wrapper, "scroll", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });

    d.dragFunctions = {
      enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e); }},
      over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e); }},
      start: function (e) { return onDragStart(cm, e); },
      drop: operation(cm, onDrop),
      leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm); }}
    };

    var inp = d.input.getField();
    on(inp, "keyup", function (e) { return onKeyUp.call(cm, e); });
    on(inp, "keydown", operation(cm, onKeyDown));
    on(inp, "keypress", operation(cm, onKeyPress));
    on(inp, "focus", function (e) { return onFocus(cm, e); });
    on(inp, "blur", function (e) { return onBlur(cm, e); });
  }

  var initHooks = [];
  CodeMirror.defineInitHook = function (f) { return initHooks.push(f); };

  // Indent the given line. The how parameter can be "smart",
  // "add"/null, "subtract", or "prev". When aggressive is false
  // (typically set to true for forced single-line indents), empty
  // lines are not indented, and places where the mode returns Pass
  // are left alone.
  function indentLine(cm, n, how, aggressive) {
    var doc = cm.doc, state;
    if (how == null) { how = "add"; }
    if (how == "smart") {
      // Fall back to "prev" when the mode doesn't have an indentation
      // method.
      if (!doc.mode.indent) { how = "prev"; }
      else { state = getContextBefore(cm, n).state; }
    }

    var tabSize = cm.options.tabSize;
    var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
    if (line.stateAfter) { line.stateAfter = null; }
    var curSpaceString = line.text.match(/^\s*/)[0], indentation;
    if (!aggressive && !/\S/.test(line.text)) {
      indentation = 0;
      how = "not";
    } else if (how == "smart") {
      indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
      if (indentation == Pass || indentation > 150) {
        if (!aggressive) { return }
        how = "prev";
      }
    }
    if (how == "prev") {
      if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize); }
      else { indentation = 0; }
    } else if (how == "add") {
      indentation = curSpace + cm.options.indentUnit;
    } else if (how == "subtract") {
      indentation = curSpace - cm.options.indentUnit;
    } else if (typeof how == "number") {
      indentation = curSpace + how;
    }
    indentation = Math.max(0, indentation);

    var indentString = "", pos = 0;
    if (cm.options.indentWithTabs)
      { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} }
    if (pos < indentation) { indentString += spaceStr(indentation - pos); }

    if (indentString != curSpaceString) {
      replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
      line.stateAfter = null;
      return true
    } else {
      // Ensure that, if the cursor was in the whitespace at the start
      // of the line, it is moved to the end of that space.
      for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) {
        var range = doc.sel.ranges[i$1];
        if (range.head.line == n && range.head.ch < curSpaceString.length) {
          var pos$1 = Pos(n, curSpaceString.length);
          replaceOneSelection(doc, i$1, new Range(pos$1, pos$1));
          break
        }
      }
    }
  }

  // This will be set to a {lineWise: bool, text: [string]} object, so
  // that, when pasting, we know what kind of selections the copied
  // text was made out of.
  var lastCopied = null;

  function setLastCopied(newLastCopied) {
    lastCopied = newLastCopied;
  }

  function applyTextInput(cm, inserted, deleted, sel, origin) {
    var doc = cm.doc;
    cm.display.shift = false;
    if (!sel) { sel = doc.sel; }

    var recent = +new Date - 200;
    var paste = origin == "paste" || cm.state.pasteIncoming > recent;
    var textLines = splitLinesAuto(inserted), multiPaste = null;
    // When pasting N lines into N selections, insert one line per selection
    if (paste && sel.ranges.length > 1) {
      if (lastCopied && lastCopied.text.join("\n") == inserted) {
        if (sel.ranges.length % lastCopied.text.length == 0) {
          multiPaste = [];
          for (var i = 0; i < lastCopied.text.length; i++)
            { multiPaste.push(doc.splitLines(lastCopied.text[i])); }
        }
      } else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) {
        multiPaste = map(textLines, function (l) { return [l]; });
      }
    }

    var updateInput = cm.curOp.updateInput;
    // Normal behavior is to insert the new text into every selection
    for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) {
      var range = sel.ranges[i$1];
      var from = range.from(), to = range.to();
      if (range.empty()) {
        if (deleted && deleted > 0) // Handle deletion
          { from = Pos(from.line, from.ch - deleted); }
        else if (cm.state.overwrite && !paste) // Handle overwrite
          { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)); }
        else if (paste && lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == textLines.join("\n"))
          { from = to = Pos(from.line, 0); }
      }
      var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines,
                         origin: origin || (paste ? "paste" : cm.state.cutIncoming > recent ? "cut" : "+input")};
      makeChange(cm.doc, changeEvent);
      signalLater(cm, "inputRead", cm, changeEvent);
    }
    if (inserted && !paste)
      { triggerElectric(cm, inserted); }

    ensureCursorVisible(cm);
    if (cm.curOp.updateInput < 2) { cm.curOp.updateInput = updateInput; }
    cm.curOp.typing = true;
    cm.state.pasteIncoming = cm.state.cutIncoming = -1;
  }

  function handlePaste(e, cm) {
    var pasted = e.clipboardData && e.clipboardData.getData("Text");
    if (pasted) {
      e.preventDefault();
      if (!cm.isReadOnly() && !cm.options.disableInput && cm.hasFocus())
        { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, "paste"); }); }
      return true
    }
  }

  function triggerElectric(cm, inserted) {
    // When an 'electric' character is inserted, immediately trigger a reindent
    if (!cm.options.electricChars || !cm.options.smartIndent) { return }
    var sel = cm.doc.sel;

    for (var i = sel.ranges.length - 1; i >= 0; i--) {
      var range = sel.ranges[i];
      if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) { continue }
      var mode = cm.getModeAt(range.head);
      var indented = false;
      if (mode.electricChars) {
        for (var j = 0; j < mode.electricChars.length; j++)
          { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
            indented = indentLine(cm, range.head.line, "smart");
            break
          } }
      } else if (mode.electricInput) {
        if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))
          { indented = indentLine(cm, range.head.line, "smart"); }
      }
      if (indented) { signalLater(cm, "electricInput", cm, range.head.line); }
    }
  }

  function copyableRanges(cm) {
    var text = [], ranges = [];
    for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
      var line = cm.doc.sel.ranges[i].head.line;
      var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
      ranges.push(lineRange);
      text.push(cm.getRange(lineRange.anchor, lineRange.head));
    }
    return {text: text, ranges: ranges}
  }

  function disableBrowserMagic(field, spellcheck, autocorrect, autocapitalize) {
    field.setAttribute("autocorrect", autocorrect ? "on" : "off");
    field.setAttribute("autocapitalize", autocapitalize ? "on" : "off");
    field.setAttribute("spellcheck", !!spellcheck);
  }

  function hiddenTextarea() {
    var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; min-height: 1em; outline: none");
    var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
    // The textarea is kept positioned near the cursor to prevent the
    // fact that it'll be scrolled into view on input from scrolling
    // our fake cursor out of view. On webkit, when wrap=off, paste is
    // very slow. So make the area wide instead.
    if (webkit) { te.style.width = "1000px"; }
    else { te.setAttribute("wrap", "off"); }
    // If border: 0; -- iOS fails to open keyboard (issue #1287)
    if (ios) { te.style.border = "1px solid black"; }
    return div
  }

  // The publicly visible API. Note that methodOp(f) means
  // 'wrap f in an operation, performed on its `this` parameter'.

  // This is not the complete set of editor methods. Most of the
  // methods defined on the Doc type are also injected into
  // CodeMirror.prototype, for backwards compatibility and
  // convenience.

  function addEditorMethods(CodeMirror) {
    var optionHandlers = CodeMirror.optionHandlers;

    var helpers = CodeMirror.helpers = {};

    CodeMirror.prototype = {
      constructor: CodeMirror,
      focus: function(){win(this).focus(); this.display.input.focus();},

      setOption: function(option, value) {
        var options = this.options, old = options[option];
        if (options[option] == value && option != "mode") { return }
        options[option] = value;
        if (optionHandlers.hasOwnProperty(option))
          { operation(this, optionHandlers[option])(this, value, old); }
        signal(this, "optionChange", this, option);
      },

      getOption: function(option) {return this.options[option]},
      getDoc: function() {return this.doc},

      addKeyMap: function(map, bottom) {
        this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map));
      },
      removeKeyMap: function(map) {
        var maps = this.state.keyMaps;
        for (var i = 0; i < maps.length; ++i)
          { if (maps[i] == map || maps[i].name == map) {
            maps.splice(i, 1);
            return true
          } }
      },

      addOverlay: methodOp(function(spec, options) {
        var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
        if (mode.startState) { throw new Error("Overlays may not be stateful.") }
        insertSorted(this.state.overlays,
                     {mode: mode, modeSpec: spec, opaque: options && options.opaque,
                      priority: (options && options.priority) || 0},
                     function (overlay) { return overlay.priority; });
        this.state.modeGen++;
        regChange(this);
      }),
      removeOverlay: methodOp(function(spec) {
        var overlays = this.state.overlays;
        for (var i = 0; i < overlays.length; ++i) {
          var cur = overlays[i].modeSpec;
          if (cur == spec || typeof spec == "string" && cur.name == spec) {
            overlays.splice(i, 1);
            this.state.modeGen++;
            regChange(this);
            return
          }
        }
      }),

      indentLine: methodOp(function(n, dir, aggressive) {
        if (typeof dir != "string" && typeof dir != "number") {
          if (dir == null) { dir = this.options.smartIndent ? "smart" : "prev"; }
          else { dir = dir ? "add" : "subtract"; }
        }
        if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive); }
      }),
      indentSelection: methodOp(function(how) {
        var ranges = this.doc.sel.ranges, end = -1;
        for (var i = 0; i < ranges.length; i++) {
          var range = ranges[i];
          if (!range.empty()) {
            var from = range.from(), to = range.to();
            var start = Math.max(end, from.line);
            end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
            for (var j = start; j < end; ++j)
              { indentLine(this, j, how); }
            var newRanges = this.doc.sel.ranges;
            if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
              { replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); }
          } else if (range.head.line > end) {
            indentLine(this, range.head.line, how, true);
            end = range.head.line;
            if (i == this.doc.sel.primIndex) { ensureCursorVisible(this); }
          }
        }
      }),

      // Fetch the parser token for a given character. Useful for hacks
      // that want to inspect the mode state (say, for completion).
      getTokenAt: function(pos, precise) {
        return takeToken(this, pos, precise)
      },

      getLineTokens: function(line, precise) {
        return takeToken(this, Pos(line), precise, true)
      },

      getTokenTypeAt: function(pos) {
        pos = clipPos(this.doc, pos);
        var styles = getLineStyles(this, getLine(this.doc, pos.line));
        var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
        var type;
        if (ch == 0) { type = styles[2]; }
        else { for (;;) {
          var mid = (before + after) >> 1;
          if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid; }
          else if (styles[mid * 2 + 1] < ch) { before = mid + 1; }
          else { type = styles[mid * 2 + 2]; break }
        } }
        var cut = type ? type.indexOf("overlay ") : -1;
        return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1)
      },

      getModeAt: function(pos) {
        var mode = this.doc.mode;
        if (!mode.innerMode) { return mode }
        return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode
      },

      getHelper: function(pos, type) {
        return this.getHelpers(pos, type)[0]
      },

      getHelpers: function(pos, type) {
        var found = [];
        if (!helpers.hasOwnProperty(type)) { return found }
        var help = helpers[type], mode = this.getModeAt(pos);
        if (typeof mode[type] == "string") {
          if (help[mode[type]]) { found.push(help[mode[type]]); }
        } else if (mode[type]) {
          for (var i = 0; i < mode[type].length; i++) {
            var val = help[mode[type][i]];
            if (val) { found.push(val); }
          }
        } else if (mode.helperType && help[mode.helperType]) {
          found.push(help[mode.helperType]);
        } else if (help[mode.name]) {
          found.push(help[mode.name]);
        }
        for (var i$1 = 0; i$1 < help._global.length; i$1++) {
          var cur = help._global[i$1];
          if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
            { found.push(cur.val); }
        }
        return found
      },

      getStateAfter: function(line, precise) {
        var doc = this.doc;
        line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
        return getContextBefore(this, line + 1, precise).state
      },

      cursorCoords: function(start, mode) {
        var pos, range = this.doc.sel.primary();
        if (start == null) { pos = range.head; }
        else if (typeof start == "object") { pos = clipPos(this.doc, start); }
        else { pos = start ? range.from() : range.to(); }
        return cursorCoords(this, pos, mode || "page")
      },

      charCoords: function(pos, mode) {
        return charCoords(this, clipPos(this.doc, pos), mode || "page")
      },

      coordsChar: function(coords, mode) {
        coords = fromCoordSystem(this, coords, mode || "page");
        return coordsChar(this, coords.left, coords.top)
      },

      lineAtHeight: function(height, mode) {
        height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
        return lineAtHeight(this.doc, height + this.display.viewOffset)
      },
      heightAtLine: function(line, mode, includeWidgets) {
        var end = false, lineObj;
        if (typeof line == "number") {
          var last = this.doc.first + this.doc.size - 1;
          if (line < this.doc.first) { line = this.doc.first; }
          else if (line > last) { line = last; end = true; }
          lineObj = getLine(this.doc, line);
        } else {
          lineObj = line;
        }
        return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page", includeWidgets || end).top +
          (end ? this.doc.height - heightAtLine(lineObj) : 0)
      },

      defaultTextHeight: function() { return textHeight(this.display) },
      defaultCharWidth: function() { return charWidth(this.display) },

      getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}},

      addWidget: function(pos, node, scroll, vert, horiz) {
        var display = this.display;
        pos = cursorCoords(this, clipPos(this.doc, pos));
        var top = pos.bottom, left = pos.left;
        node.style.position = "absolute";
        node.setAttribute("cm-ignore-events", "true");
        this.display.input.setUneditable(node);
        display.sizer.appendChild(node);
        if (vert == "over") {
          top = pos.top;
        } else if (vert == "above" || vert == "near") {
          var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
          hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
          // Default to positioning above (if specified and possible); otherwise default to positioning below
          if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
            { top = pos.top - node.offsetHeight; }
          else if (pos.bottom + node.offsetHeight <= vspace)
            { top = pos.bottom; }
          if (left + node.offsetWidth > hspace)
            { left = hspace - node.offsetWidth; }
        }
        node.style.top = top + "px";
        node.style.left = node.style.right = "";
        if (horiz == "right") {
          left = display.sizer.clientWidth - node.offsetWidth;
          node.style.right = "0px";
        } else {
          if (horiz == "left") { left = 0; }
          else if (horiz == "middle") { left = (display.sizer.clientWidth - node.offsetWidth) / 2; }
          node.style.left = left + "px";
        }
        if (scroll)
          { scrollIntoView(this, {left: left, top: top, right: left + node.offsetWidth, bottom: top + node.offsetHeight}); }
      },

      triggerOnKeyDown: methodOp(onKeyDown),
      triggerOnKeyPress: methodOp(onKeyPress),
      triggerOnKeyUp: onKeyUp,
      triggerOnMouseDown: methodOp(onMouseDown),

      execCommand: function(cmd) {
        if (commands.hasOwnProperty(cmd))
          { return commands[cmd].call(null, this) }
      },

      triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),

      findPosH: function(from, amount, unit, visually) {
        var dir = 1;
        if (amount < 0) { dir = -1; amount = -amount; }
        var cur = clipPos(this.doc, from);
        for (var i = 0; i < amount; ++i) {
          cur = findPosH(this.doc, cur, dir, unit, visually);
          if (cur.hitSide) { break }
        }
        return cur
      },

      moveH: methodOp(function(dir, unit) {
        var this$1 = this;

        this.extendSelectionsBy(function (range) {
          if (this$1.display.shift || this$1.doc.extend || range.empty())
            { return findPosH(this$1.doc, range.head, dir, unit, this$1.options.rtlMoveVisually) }
          else
            { return dir < 0 ? range.from() : range.to() }
        }, sel_move);
      }),

      deleteH: methodOp(function(dir, unit) {
        var sel = this.doc.sel, doc = this.doc;
        if (sel.somethingSelected())
          { doc.replaceSelection("", null, "+delete"); }
        else
          { deleteNearSelection(this, function (range) {
            var other = findPosH(doc, range.head, dir, unit, false);
            return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other}
          }); }
      }),

      findPosV: function(from, amount, unit, goalColumn) {
        var dir = 1, x = goalColumn;
        if (amount < 0) { dir = -1; amount = -amount; }
        var cur = clipPos(this.doc, from);
        for (var i = 0; i < amount; ++i) {
          var coords = cursorCoords(this, cur, "div");
          if (x == null) { x = coords.left; }
          else { coords.left = x; }
          cur = findPosV(this, coords, dir, unit);
          if (cur.hitSide) { break }
        }
        return cur
      },

      moveV: methodOp(function(dir, unit) {
        var this$1 = this;

        var doc = this.doc, goals = [];
        var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected();
        doc.extendSelectionsBy(function (range) {
          if (collapse)
            { return dir < 0 ? range.from() : range.to() }
          var headPos = cursorCoords(this$1, range.head, "div");
          if (range.goalColumn != null) { headPos.left = range.goalColumn; }
          goals.push(headPos.left);
          var pos = findPosV(this$1, headPos, dir, unit);
          if (unit == "page" && range == doc.sel.primary())
            { addToScrollTop(this$1, charCoords(this$1, pos, "div").top - headPos.top); }
          return pos
        }, sel_move);
        if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++)
          { doc.sel.ranges[i].goalColumn = goals[i]; } }
      }),

      // Find the word at the given position (as returned by coordsChar).
      findWordAt: function(pos) {
        var doc = this.doc, line = getLine(doc, pos.line).text;
        var start = pos.ch, end = pos.ch;
        if (line) {
          var helper = this.getHelper(pos, "wordChars");
          if ((pos.sticky == "before" || end == line.length) && start) { --start; } else { ++end; }
          var startChar = line.charAt(start);
          var check = isWordChar(startChar, helper)
            ? function (ch) { return isWordChar(ch, helper); }
            : /\s/.test(startChar) ? function (ch) { return /\s/.test(ch); }
            : function (ch) { return (!/\s/.test(ch) && !isWordChar(ch)); };
          while (start > 0 && check(line.charAt(start - 1))) { --start; }
          while (end < line.length && check(line.charAt(end))) { ++end; }
        }
        return new Range(Pos(pos.line, start), Pos(pos.line, end))
      },

      toggleOverwrite: function(value) {
        if (value != null && value == this.state.overwrite) { return }
        if (this.state.overwrite = !this.state.overwrite)
          { addClass(this.display.cursorDiv, "CodeMirror-overwrite"); }
        else
          { rmClass(this.display.cursorDiv, "CodeMirror-overwrite"); }

        signal(this, "overwriteToggle", this, this.state.overwrite);
      },
      hasFocus: function() { return this.display.input.getField() == activeElt(root(this)) },
      isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) },

      scrollTo: methodOp(function (x, y) { scrollToCoords(this, x, y); }),
      getScrollInfo: function() {
        var scroller = this.display.scroller;
        return {left: scroller.scrollLeft, top: scroller.scrollTop,
                height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
                width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
                clientHeight: displayHeight(this), clientWidth: displayWidth(this)}
      },

      scrollIntoView: methodOp(function(range, margin) {
        if (range == null) {
          range = {from: this.doc.sel.primary().head, to: null};
          if (margin == null) { margin = this.options.cursorScrollMargin; }
        } else if (typeof range == "number") {
          range = {from: Pos(range, 0), to: null};
        } else if (range.from == null) {
          range = {from: range, to: null};
        }
        if (!range.to) { range.to = range.from; }
        range.margin = margin || 0;

        if (range.from.line != null) {
          scrollToRange(this, range);
        } else {
          scrollToCoordsRange(this, range.from, range.to, range.margin);
        }
      }),

      setSize: methodOp(function(width, height) {
        var this$1 = this;

        var interpret = function (val) { return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; };
        if (width != null) { this.display.wrapper.style.width = interpret(width); }
        if (height != null) { this.display.wrapper.style.height = interpret(height); }
        if (this.options.lineWrapping) { clearLineMeasurementCache(this); }
        var lineNo = this.display.viewFrom;
        this.doc.iter(lineNo, this.display.viewTo, function (line) {
          if (line.widgets) { for (var i = 0; i < line.widgets.length; i++)
            { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo, "widget"); break } } }
          ++lineNo;
        });
        this.curOp.forceUpdate = true;
        signal(this, "refresh", this);
      }),

      operation: function(f){return runInOp(this, f)},
      startOperation: function(){return startOperation(this)},
      endOperation: function(){return endOperation(this)},

      refresh: methodOp(function() {
        var oldHeight = this.display.cachedTextHeight;
        regChange(this);
        this.curOp.forceUpdate = true;
        clearCaches(this);
        scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop);
        updateGutterSpace(this.display);
        if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5 || this.options.lineWrapping)
          { estimateLineHeights(this); }
        signal(this, "refresh", this);
      }),

      swapDoc: methodOp(function(doc) {
        var old = this.doc;
        old.cm = null;
        // Cancel the current text selection if any (#5821)
        if (this.state.selectingText) { this.state.selectingText(); }
        attachDoc(this, doc);
        clearCaches(this);
        this.display.input.reset();
        scrollToCoords(this, doc.scrollLeft, doc.scrollTop);
        this.curOp.forceScroll = true;
        signalLater(this, "swapDoc", this, old);
        return old
      }),

      phrase: function(phraseText) {
        var phrases = this.options.phrases;
        return phrases && Object.prototype.hasOwnProperty.call(phrases, phraseText) ? phrases[phraseText] : phraseText
      },

      getInputField: function(){return this.display.input.getField()},
      getWrapperElement: function(){return this.display.wrapper},
      getScrollerElement: function(){return this.display.scroller},
      getGutterElement: function(){return this.display.gutters}
    };
    eventMixin(CodeMirror);

    CodeMirror.registerHelper = function(type, name, value) {
      if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []}; }
      helpers[type][name] = value;
    };
    CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
      CodeMirror.registerHelper(type, name, value);
      helpers[type]._global.push({pred: predicate, val: value});
    };
  }

  // Used for horizontal relative motion. Dir is -1 or 1 (left or
  // right), unit can be "codepoint", "char", "column" (like char, but
  // doesn't cross line boundaries), "word" (across next word), or
  // "group" (to the start of next group of word or
  // non-word-non-whitespace chars). The visually param controls
  // whether, in right-to-left text, direction 1 means to move towards
  // the next index in the string, or towards the character to the right
  // of the current position. The resulting position will have a
  // hitSide=true property if it reached the end of the document.
  function findPosH(doc, pos, dir, unit, visually) {
    var oldPos = pos;
    var origDir = dir;
    var lineObj = getLine(doc, pos.line);
    var lineDir = visually && doc.direction == "rtl" ? -dir : dir;
    function findNextLine() {
      var l = pos.line + lineDir;
      if (l < doc.first || l >= doc.first + doc.size) { return false }
      pos = new Pos(l, pos.ch, pos.sticky);
      return lineObj = getLine(doc, l)
    }
    function moveOnce(boundToLine) {
      var next;
      if (unit == "codepoint") {
        var ch = lineObj.text.charCodeAt(pos.ch + (dir > 0 ? 0 : -1));
        if (isNaN(ch)) {
          next = null;
        } else {
          var astral = dir > 0 ? ch >= 0xD800 && ch < 0xDC00 : ch >= 0xDC00 && ch < 0xDFFF;
          next = new Pos(pos.line, Math.max(0, Math.min(lineObj.text.length, pos.ch + dir * (astral ? 2 : 1))), -dir);
        }
      } else if (visually) {
        next = moveVisually(doc.cm, lineObj, pos, dir);
      } else {
        next = moveLogically(lineObj, pos, dir);
      }
      if (next == null) {
        if (!boundToLine && findNextLine())
          { pos = endOfLine(visually, doc.cm, lineObj, pos.line, lineDir); }
        else
          { return false }
      } else {
        pos = next;
      }
      return true
    }

    if (unit == "char" || unit == "codepoint") {
      moveOnce();
    } else if (unit == "column") {
      moveOnce(true);
    } else if (unit == "word" || unit == "group") {
      var sawType = null, group = unit == "group";
      var helper = doc.cm && doc.cm.getHelper(pos, "wordChars");
      for (var first = true;; first = false) {
        if (dir < 0 && !moveOnce(!first)) { break }
        var cur = lineObj.text.charAt(pos.ch) || "\n";
        var type = isWordChar(cur, helper) ? "w"
          : group && cur == "\n" ? "n"
          : !group || /\s/.test(cur) ? null
          : "p";
        if (group && !first && !type) { type = "s"; }
        if (sawType && sawType != type) {
          if (dir < 0) {dir = 1; moveOnce(); pos.sticky = "after";}
          break
        }

        if (type) { sawType = type; }
        if (dir > 0 && !moveOnce(!first)) { break }
      }
    }
    var result = skipAtomic(doc, pos, oldPos, origDir, true);
    if (equalCursorPos(oldPos, result)) { result.hitSide = true; }
    return result
  }

  // For relative vertical movement. Dir may be -1 or 1. Unit can be
  // "page" or "line". The resulting position will have a hitSide=true
  // property if it reached the end of the document.
  function findPosV(cm, pos, dir, unit) {
    var doc = cm.doc, x = pos.left, y;
    if (unit == "page") {
      var pageSize = Math.min(cm.display.wrapper.clientHeight, win(cm).innerHeight || doc(cm).documentElement.clientHeight);
      var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3);
      y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount;

    } else if (unit == "line") {
      y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
    }
    var target;
    for (;;) {
      target = coordsChar(cm, x, y);
      if (!target.outside) { break }
      if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break }
      y += dir * 5;
    }
    return target
  }

  // CONTENTEDITABLE INPUT STYLE

  var ContentEditableInput = function(cm) {
    this.cm = cm;
    this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;
    this.polling = new Delayed();
    this.composing = null;
    this.gracePeriod = false;
    this.readDOMTimeout = null;
  };

  ContentEditableInput.prototype.init = function (display) {
      var this$1 = this;

    var input = this, cm = input.cm;
    var div = input.div = display.lineDiv;
    div.contentEditable = true;
    disableBrowserMagic(div, cm.options.spellcheck, cm.options.autocorrect, cm.options.autocapitalize);

    function belongsToInput(e) {
      for (var t = e.target; t; t = t.parentNode) {
        if (t == div) { return true }
        if (/\bCodeMirror-(?:line)?widget\b/.test(t.className)) { break }
      }
      return false
    }

    on(div, "paste", function (e) {
      if (!belongsToInput(e) || signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }
      // IE doesn't fire input events, so we schedule a read for the pasted content in this way
      if (ie_version <= 11) { setTimeout(operation(cm, function () { return this$1.updateFromDOM(); }), 20); }
    });

    on(div, "compositionstart", function (e) {
      this$1.composing = {data: e.data, done: false};
    });
    on(div, "compositionupdate", function (e) {
      if (!this$1.composing) { this$1.composing = {data: e.data, done: false}; }
    });
    on(div, "compositionend", function (e) {
      if (this$1.composing) {
        if (e.data != this$1.composing.data) { this$1.readFromDOMSoon(); }
        this$1.composing.done = true;
      }
    });

    on(div, "touchstart", function () { return input.forceCompositionEnd(); });

    on(div, "input", function () {
      if (!this$1.composing) { this$1.readFromDOMSoon(); }
    });

    function onCopyCut(e) {
      if (!belongsToInput(e) || signalDOMEvent(cm, e)) { return }
      if (cm.somethingSelected()) {
        setLastCopied({lineWise: false, text: cm.getSelections()});
        if (e.type == "cut") { cm.replaceSelection("", null, "cut"); }
      } else if (!cm.options.lineWiseCopyCut) {
        return
      } else {
        var ranges = copyableRanges(cm);
        setLastCopied({lineWise: true, text: ranges.text});
        if (e.type == "cut") {
          cm.operation(function () {
            cm.setSelections(ranges.ranges, 0, sel_dontScroll);
            cm.replaceSelection("", null, "cut");
          });
        }
      }
      if (e.clipboardData) {
        e.clipboardData.clearData();
        var content = lastCopied.text.join("\n");
        // iOS exposes the clipboard API, but seems to discard content inserted into it
        e.clipboardData.setData("Text", content);
        if (e.clipboardData.getData("Text") == content) {
          e.preventDefault();
          return
        }
      }
      // Old-fashioned briefly-focus-a-textarea hack
      var kludge = hiddenTextarea(), te = kludge.firstChild;
      disableBrowserMagic(te);
      cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
      te.value = lastCopied.text.join("\n");
      var hadFocus = activeElt(rootNode(div));
      selectInput(te);
      setTimeout(function () {
        cm.display.lineSpace.removeChild(kludge);
        hadFocus.focus();
        if (hadFocus == div) { input.showPrimarySelection(); }
      }, 50);
    }
    on(div, "copy", onCopyCut);
    on(div, "cut", onCopyCut);
  };

  ContentEditableInput.prototype.screenReaderLabelChanged = function (label) {
    // Label for screenreaders, accessibility
    if(label) {
      this.div.setAttribute('aria-label', label);
    } else {
      this.div.removeAttribute('aria-label');
    }
  };

  ContentEditableInput.prototype.prepareSelection = function () {
    var result = prepareSelection(this.cm, false);
    result.focus = activeElt(rootNode(this.div)) == this.div;
    return result
  };

  ContentEditableInput.prototype.showSelection = function (info, takeFocus) {
    if (!info || !this.cm.display.view.length) { return }
    if (info.focus || takeFocus) { this.showPrimarySelection(); }
    this.showMultipleSelections(info);
  };

  ContentEditableInput.prototype.getSelection = function () {
    return this.cm.display.wrapper.ownerDocument.getSelection()
  };

  ContentEditableInput.prototype.showPrimarySelection = function () {
    var sel = this.getSelection(), cm = this.cm, prim = cm.doc.sel.primary();
    var from = prim.from(), to = prim.to();

    if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) {
      sel.removeAllRanges();
      return
    }

    var curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
    var curFocus = domToPos(cm, sel.focusNode, sel.focusOffset);
    if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
        cmp(minPos(curAnchor, curFocus), from) == 0 &&
        cmp(maxPos(curAnchor, curFocus), to) == 0)
      { return }

    var view = cm.display.view;
    var start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) ||
        {node: view[0].measure.map[2], offset: 0};
    var end = to.line < cm.display.viewTo && posToDOM(cm, to);
    if (!end) {
      var measure = view[view.length - 1].measure;
      var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
      end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]};
    }

    if (!start || !end) {
      sel.removeAllRanges();
      return
    }

    var old = sel.rangeCount && sel.getRangeAt(0), rng;
    try { rng = range(start.node, start.offset, end.offset, end.node); }
    catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
    if (rng) {
      if (!gecko && cm.state.focused) {
        sel.collapse(start.node, start.offset);
        if (!rng.collapsed) {
          sel.removeAllRanges();
          sel.addRange(rng);
        }
      } else {
        sel.removeAllRanges();
        sel.addRange(rng);
      }
      if (old && sel.anchorNode == null) { sel.addRange(old); }
      else if (gecko) { this.startGracePeriod(); }
    }
    this.rememberSelection();
  };

  ContentEditableInput.prototype.startGracePeriod = function () {
      var this$1 = this;

    clearTimeout(this.gracePeriod);
    this.gracePeriod = setTimeout(function () {
      this$1.gracePeriod = false;
      if (this$1.selectionChanged())
        { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }); }
    }, 20);
  };

  ContentEditableInput.prototype.showMultipleSelections = function (info) {
    removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);
    removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);
  };

  ContentEditableInput.prototype.rememberSelection = function () {
    var sel = this.getSelection();
    this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;
    this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;
  };

  ContentEditableInput.prototype.selectionInEditor = function () {
    var sel = this.getSelection();
    if (!sel.rangeCount) { return false }
    var node = sel.getRangeAt(0).commonAncestorContainer;
    return contains(this.div, node)
  };

  ContentEditableInput.prototype.focus = function () {
    if (this.cm.options.readOnly != "nocursor") {
      if (!this.selectionInEditor() || activeElt(rootNode(this.div)) != this.div)
        { this.showSelection(this.prepareSelection(), true); }
      this.div.focus();
    }
  };
  ContentEditableInput.prototype.blur = function () { this.div.blur(); };
  ContentEditableInput.prototype.getField = function () { return this.div };

  ContentEditableInput.prototype.supportsTouch = function () { return true };

  ContentEditableInput.prototype.receivedFocus = function () {
      var this$1 = this;

    var input = this;
    if (this.selectionInEditor())
      { setTimeout(function () { return this$1.pollSelection(); }, 20); }
    else
      { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }); }

    function poll() {
      if (input.cm.state.focused) {
        input.pollSelection();
        input.polling.set(input.cm.options.pollInterval, poll);
      }
    }
    this.polling.set(this.cm.options.pollInterval, poll);
  };

  ContentEditableInput.prototype.selectionChanged = function () {
    var sel = this.getSelection();
    return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
      sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset
  };

  ContentEditableInput.prototype.pollSelection = function () {
    if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) { return }
    var sel = this.getSelection(), cm = this.cm;
    // On Android Chrome (version 56, at least), backspacing into an
    // uneditable block element will put the cursor in that element,
    // and then, because it's not editable, hide the virtual keyboard.
    // Because Android doesn't allow us to actually detect backspace
    // presses in a sane way, this code checks for when that happens
    // and simulates a backspace press in this case.
    if (android && chrome && this.cm.display.gutterSpecs.length && isInGutter(sel.anchorNode)) {
      this.cm.triggerOnKeyDown({type: "keydown", keyCode: 8, preventDefault: Math.abs});
      this.blur();
      this.focus();
      return
    }
    if (this.composing) { return }
    this.rememberSelection();
    var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
    var head = domToPos(cm, sel.focusNode, sel.focusOffset);
    if (anchor && head) { runInOp(cm, function () {
      setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);
      if (anchor.bad || head.bad) { cm.curOp.selectionChanged = true; }
    }); }
  };

  ContentEditableInput.prototype.pollContent = function () {
    if (this.readDOMTimeout != null) {
      clearTimeout(this.readDOMTimeout);
      this.readDOMTimeout = null;
    }

    var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();
    var from = sel.from(), to = sel.to();
    if (from.ch == 0 && from.line > cm.firstLine())
      { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length); }
    if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine())
      { to = Pos(to.line + 1, 0); }
    if (from.line < display.viewFrom || to.line > display.viewTo - 1) { return false }

    var fromIndex, fromLine, fromNode;
    if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {
      fromLine = lineNo(display.view[0].line);
      fromNode = display.view[0].node;
    } else {
      fromLine = lineNo(display.view[fromIndex].line);
      fromNode = display.view[fromIndex - 1].node.nextSibling;
    }
    var toIndex = findViewIndex(cm, to.line);
    var toLine, toNode;
    if (toIndex == display.view.length - 1) {
      toLine = display.viewTo - 1;
      toNode = display.lineDiv.lastChild;
    } else {
      toLine = lineNo(display.view[toIndex + 1].line) - 1;
      toNode = display.view[toIndex + 1].node.previousSibling;
    }

    if (!fromNode) { return false }
    var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));
    var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));
    while (newText.length > 1 && oldText.length > 1) {
      if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }
      else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }
      else { break }
    }

    var cutFront = 0, cutEnd = 0;
    var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);
    while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))
      { ++cutFront; }
    var newBot = lst(newText), oldBot = lst(oldText);
    var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
                             oldBot.length - (oldText.length == 1 ? cutFront : 0));
    while (cutEnd < maxCutEnd &&
           newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))
      { ++cutEnd; }
    // Try to move start of change to start of selection if ambiguous
    if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) {
      while (cutFront && cutFront > from.ch &&
             newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) {
        cutFront--;
        cutEnd++;
      }
    }

    newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\u200b+/, "");
    newText[0] = newText[0].slice(cutFront).replace(/\u200b+$/, "");

    var chFrom = Pos(fromLine, cutFront);
    var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);
    if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {
      replaceRange(cm.doc, newText, chFrom, chTo, "+input");
      return true
    }
  };

  ContentEditableInput.prototype.ensurePolled = function () {
    this.forceCompositionEnd();
  };
  ContentEditableInput.prototype.reset = function () {
    this.forceCompositionEnd();
  };
  ContentEditableInput.prototype.forceCompositionEnd = function () {
    if (!this.composing) { return }
    clearTimeout(this.readDOMTimeout);
    this.composing = null;
    this.updateFromDOM();
    this.div.blur();
    this.div.focus();
  };
  ContentEditableInput.prototype.readFromDOMSoon = function () {
      var this$1 = this;

    if (this.readDOMTimeout != null) { return }
    this.readDOMTimeout = setTimeout(function () {
      this$1.readDOMTimeout = null;
      if (this$1.composing) {
        if (this$1.composing.done) { this$1.composing = null; }
        else { return }
      }
      this$1.updateFromDOM();
    }, 80);
  };

  ContentEditableInput.prototype.updateFromDOM = function () {
      var this$1 = this;

    if (this.cm.isReadOnly() || !this.pollContent())
      { runInOp(this.cm, function () { return regChange(this$1.cm); }); }
  };

  ContentEditableInput.prototype.setUneditable = function (node) {
    node.contentEditable = "false";
  };

  ContentEditableInput.prototype.onKeyPress = function (e) {
    if (e.charCode == 0 || this.composing) { return }
    e.preventDefault();
    if (!this.cm.isReadOnly())
      { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0); }
  };

  ContentEditableInput.prototype.readOnlyChanged = function (val) {
    this.div.contentEditable = String(val != "nocursor");
  };

  ContentEditableInput.prototype.onContextMenu = function () {};
  ContentEditableInput.prototype.resetPosition = function () {};

  ContentEditableInput.prototype.needsContentAttribute = true;

  function posToDOM(cm, pos) {
    var view = findViewForLine(cm, pos.line);
    if (!view || view.hidden) { return null }
    var line = getLine(cm.doc, pos.line);
    var info = mapFromLineView(view, line, pos.line);

    var order = getOrder(line, cm.doc.direction), side = "left";
    if (order) {
      var partPos = getBidiPartAt(order, pos.ch);
      side = partPos % 2 ? "right" : "left";
    }
    var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);
    result.offset = result.collapse == "right" ? result.end : result.start;
    return result
  }

  function isInGutter(node) {
    for (var scan = node; scan; scan = scan.parentNode)
      { if (/CodeMirror-gutter-wrapper/.test(scan.className)) { return true } }
    return false
  }

  function badPos(pos, bad) { if (bad) { pos.bad = true; } return pos }

  function domTextBetween(cm, from, to, fromLine, toLine) {
    var text = "", closing = false, lineSep = cm.doc.lineSeparator(), extraLinebreak = false;
    function recognizeMarker(id) { return function (marker) { return marker.id == id; } }
    function close() {
      if (closing) {
        text += lineSep;
        if (extraLinebreak) { text += lineSep; }
        closing = extraLinebreak = false;
      }
    }
    function addText(str) {
      if (str) {
        close();
        text += str;
      }
    }
    function walk(node) {
      if (node.nodeType == 1) {
        var cmText = node.getAttribute("cm-text");
        if (cmText) {
          addText(cmText);
          return
        }
        var markerID = node.getAttribute("cm-marker"), range;
        if (markerID) {
          var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));
          if (found.length && (range = found[0].find(0)))
            { addText(getBetween(cm.doc, range.from, range.to).join(lineSep)); }
          return
        }
        if (node.getAttribute("contenteditable") == "false") { return }
        var isBlock = /^(pre|div|p|li|table|br)$/i.test(node.nodeName);
        if (!/^br$/i.test(node.nodeName) && node.textContent.length == 0) { return }

        if (isBlock) { close(); }
        for (var i = 0; i < node.childNodes.length; i++)
          { walk(node.childNodes[i]); }

        if (/^(pre|p)$/i.test(node.nodeName)) { extraLinebreak = true; }
        if (isBlock) { closing = true; }
      } else if (node.nodeType == 3) {
        addText(node.nodeValue.replace(/\u200b/g, "").replace(/\u00a0/g, " "));
      }
    }
    for (;;) {
      walk(from);
      if (from == to) { break }
      from = from.nextSibling;
      extraLinebreak = false;
    }
    return text
  }

  function domToPos(cm, node, offset) {
    var lineNode;
    if (node == cm.display.lineDiv) {
      lineNode = cm.display.lineDiv.childNodes[offset];
      if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) }
      node = null; offset = 0;
    } else {
      for (lineNode = node;; lineNode = lineNode.parentNode) {
        if (!lineNode || lineNode == cm.display.lineDiv) { return null }
        if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break }
      }
    }
    for (var i = 0; i < cm.display.view.length; i++) {
      var lineView = cm.display.view[i];
      if (lineView.node == lineNode)
        { return locateNodeInLineView(lineView, node, offset) }
    }
  }

  function locateNodeInLineView(lineView, node, offset) {
    var wrapper = lineView.text.firstChild, bad = false;
    if (!node || !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) }
    if (node == wrapper) {
      bad = true;
      node = wrapper.childNodes[offset];
      offset = 0;
      if (!node) {
        var line = lineView.rest ? lst(lineView.rest) : lineView.line;
        return badPos(Pos(lineNo(line), line.text.length), bad)
      }
    }

    var textNode = node.nodeType == 3 ? node : null, topNode = node;
    if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
      textNode = node.firstChild;
      if (offset) { offset = textNode.nodeValue.length; }
    }
    while (topNode.parentNode != wrapper) { topNode = topNode.parentNode; }
    var measure = lineView.measure, maps = measure.maps;

    function find(textNode, topNode, offset) {
      for (var i = -1; i < (maps ? maps.length : 0); i++) {
        var map = i < 0 ? measure.map : maps[i];
        for (var j = 0; j < map.length; j += 3) {
          var curNode = map[j + 2];
          if (curNode == textNode || curNode == topNode) {
            var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);
            var ch = map[j] + offset;
            if (offset < 0 || curNode != textNode) { ch = map[j + (offset ? 1 : 0)]; }
            return Pos(line, ch)
          }
        }
      }
    }
    var found = find(textNode, topNode, offset);
    if (found) { return badPos(found, bad) }

    // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
    for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
      found = find(after, after.firstChild, 0);
      if (found)
        { return badPos(Pos(found.line, found.ch - dist), bad) }
      else
        { dist += after.textContent.length; }
    }
    for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) {
      found = find(before, before.firstChild, -1);
      if (found)
        { return badPos(Pos(found.line, found.ch + dist$1), bad) }
      else
        { dist$1 += before.textContent.length; }
    }
  }

  // TEXTAREA INPUT STYLE

  var TextareaInput = function(cm) {
    this.cm = cm;
    // See input.poll and input.reset
    this.prevInput = "";

    // Flag that indicates whether we expect input to appear real soon
    // now (after some event like 'keypress' or 'input') and are
    // polling intensively.
    this.pollingFast = false;
    // Self-resetting timeout for the poller
    this.polling = new Delayed();
    // Used to work around IE issue with selection being forgotten when focus moves away from textarea
    this.hasSelection = false;
    this.composing = null;
    this.resetting = false;
  };

  TextareaInput.prototype.init = function (display) {
      var this$1 = this;

    var input = this, cm = this.cm;
    this.createField(display);
    var te = this.textarea;

    display.wrapper.insertBefore(this.wrapper, display.wrapper.firstChild);

    // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)
    if (ios) { te.style.width = "0px"; }

    on(te, "input", function () {
      if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null; }
      input.poll();
    });

    on(te, "paste", function (e) {
      if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }

      cm.state.pasteIncoming = +new Date;
      input.fastPoll();
    });

    function prepareCopyCut(e) {
      if (signalDOMEvent(cm, e)) { return }
      if (cm.somethingSelected()) {
        setLastCopied({lineWise: false, text: cm.getSelections()});
      } else if (!cm.options.lineWiseCopyCut) {
        return
      } else {
        var ranges = copyableRanges(cm);
        setLastCopied({lineWise: true, text: ranges.text});
        if (e.type == "cut") {
          cm.setSelections(ranges.ranges, null, sel_dontScroll);
        } else {
          input.prevInput = "";
          te.value = ranges.text.join("\n");
          selectInput(te);
        }
      }
      if (e.type == "cut") { cm.state.cutIncoming = +new Date; }
    }
    on(te, "cut", prepareCopyCut);
    on(te, "copy", prepareCopyCut);

    on(display.scroller, "paste", function (e) {
      if (eventInWidget(display, e) || signalDOMEvent(cm, e)) { return }
      if (!te.dispatchEvent) {
        cm.state.pasteIncoming = +new Date;
        input.focus();
        return
      }

      // Pass the `paste` event to the textarea so it's handled by its event listener.
      var event = new Event("paste");
      event.clipboardData = e.clipboardData;
      te.dispatchEvent(event);
    });

    // Prevent normal selection in the editor (we handle our own)
    on(display.lineSpace, "selectstart", function (e) {
      if (!eventInWidget(display, e)) { e_preventDefault(e); }
    });

    on(te, "compositionstart", function () {
      var start = cm.getCursor("from");
      if (input.composing) { input.composing.range.clear(); }
      input.composing = {
        start: start,
        range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"})
      };
    });
    on(te, "compositionend", function () {
      if (input.composing) {
        input.poll();
        input.composing.range.clear();
        input.composing = null;
      }
    });
  };

  TextareaInput.prototype.createField = function (_display) {
    // Wraps and hides input textarea
    this.wrapper = hiddenTextarea();
    // The semihidden textarea that is focused when the editor is
    // focused, and receives input.
    this.textarea = this.wrapper.firstChild;
    var opts = this.cm.options;
    disableBrowserMagic(this.textarea, opts.spellcheck, opts.autocorrect, opts.autocapitalize);
  };

  TextareaInput.prototype.screenReaderLabelChanged = function (label) {
    // Label for screenreaders, accessibility
    if(label) {
      this.textarea.setAttribute('aria-label', label);
    } else {
      this.textarea.removeAttribute('aria-label');
    }
  };

  TextareaInput.prototype.prepareSelection = function () {
    // Redraw the selection and/or cursor
    var cm = this.cm, display = cm.display, doc = cm.doc;
    var result = prepareSelection(cm);

    // Move the hidden textarea near the cursor to prevent scrolling artifacts
    if (cm.options.moveInputWithCursor) {
      var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
      var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
      result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
                                          headPos.top + lineOff.top - wrapOff.top));
      result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
                                           headPos.left + lineOff.left - wrapOff.left));
    }

    return result
  };

  TextareaInput.prototype.showSelection = function (drawn) {
    var cm = this.cm, display = cm.display;
    removeChildrenAndAdd(display.cursorDiv, drawn.cursors);
    removeChildrenAndAdd(display.selectionDiv, drawn.selection);
    if (drawn.teTop != null) {
      this.wrapper.style.top = drawn.teTop + "px";
      this.wrapper.style.left = drawn.teLeft + "px";
    }
  };

  // Reset the input to correspond to the selection (or to be empty,
  // when not typing and nothing is selected)
  TextareaInput.prototype.reset = function (typing) {
    if (this.contextMenuPending || this.composing && typing) { return }
    var cm = this.cm;
    this.resetting = true;
    if (cm.somethingSelected()) {
      this.prevInput = "";
      var content = cm.getSelection();
      this.textarea.value = content;
      if (cm.state.focused) { selectInput(this.textarea); }
      if (ie && ie_version >= 9) { this.hasSelection = content; }
    } else if (!typing) {
      this.prevInput = this.textarea.value = "";
      if (ie && ie_version >= 9) { this.hasSelection = null; }
    }
    this.resetting = false;
  };

  TextareaInput.prototype.getField = function () { return this.textarea };

  TextareaInput.prototype.supportsTouch = function () { return false };

  TextareaInput.prototype.focus = function () {
    if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt(rootNode(this.textarea)) != this.textarea)) {
      try { this.textarea.focus(); }
      catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM
    }
  };

  TextareaInput.prototype.blur = function () { this.textarea.blur(); };

  TextareaInput.prototype.resetPosition = function () {
    this.wrapper.style.top = this.wrapper.style.left = 0;
  };

  TextareaInput.prototype.receivedFocus = function () { this.slowPoll(); };

  // Poll for input changes, using the normal rate of polling. This
  // runs as long as the editor is focused.
  TextareaInput.prototype.slowPoll = function () {
      var this$1 = this;

    if (this.pollingFast) { return }
    this.polling.set(this.cm.options.pollInterval, function () {
      this$1.poll();
      if (this$1.cm.state.focused) { this$1.slowPoll(); }
    });
  };

  // When an event has just come in that is likely to add or change
  // something in the input textarea, we poll faster, to ensure that
  // the change appears on the screen quickly.
  TextareaInput.prototype.fastPoll = function () {
    var missed = false, input = this;
    input.pollingFast = true;
    function p() {
      var changed = input.poll();
      if (!changed && !missed) {missed = true; input.polling.set(60, p);}
      else {input.pollingFast = false; input.slowPoll();}
    }
    input.polling.set(20, p);
  };

  // Read input from the textarea, and update the document to match.
  // When something is selected, it is present in the textarea, and
  // selected (unless it is huge, in which case a placeholder is
  // used). When nothing is selected, the cursor sits after previously
  // seen text (can be empty), which is stored in prevInput (we must
  // not reset the textarea when typing, because that breaks IME).
  TextareaInput.prototype.poll = function () {
      var this$1 = this;

    var cm = this.cm, input = this.textarea, prevInput = this.prevInput;
    // Since this is called a *lot*, try to bail out as cheaply as
    // possible when it is clear that nothing happened. hasSelection
    // will be the case when there is a lot of text in the textarea,
    // in which case reading its value would be expensive.
    if (this.contextMenuPending || this.resetting || !cm.state.focused ||
        (hasSelection(input) && !prevInput && !this.composing) ||
        cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq)
      { return false }

    var text = input.value;
    // If nothing changed, bail.
    if (text == prevInput && !cm.somethingSelected()) { return false }
    // Work around nonsensical selection resetting in IE9/10, and
    // inexplicable appearance of private area unicode characters on
    // some key combos in Mac (#2689).
    if (ie && ie_version >= 9 && this.hasSelection === text ||
        mac && /[\uf700-\uf7ff]/.test(text)) {
      cm.display.input.reset();
      return false
    }

    if (cm.doc.sel == cm.display.selForContextMenu) {
      var first = text.charCodeAt(0);
      if (first == 0x200b && !prevInput) { prevInput = "\u200b"; }
      if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo") }
    }
    // Find the part of the input that is actually new
    var same = 0, l = Math.min(prevInput.length, text.length);
    while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same; }

    runInOp(cm, function () {
      applyTextInput(cm, text.slice(same), prevInput.length - same,
                     null, this$1.composing ? "*compose" : null);

      // Don't leave long text in the textarea, since it makes further polling slow
      if (text.length > 1000 || text.indexOf("\n") > -1) { input.value = this$1.prevInput = ""; }
      else { this$1.prevInput = text; }

      if (this$1.composing) {
        this$1.composing.range.clear();
        this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor("to"),
                                           {className: "CodeMirror-composing"});
      }
    });
    return true
  };

  TextareaInput.prototype.ensurePolled = function () {
    if (this.pollingFast && this.poll()) { this.pollingFast = false; }
  };

  TextareaInput.prototype.onKeyPress = function () {
    if (ie && ie_version >= 9) { this.hasSelection = null; }
    this.fastPoll();
  };

  TextareaInput.prototype.onContextMenu = function (e) {
    var input = this, cm = input.cm, display = cm.display, te = input.textarea;
    if (input.contextMenuPending) { input.contextMenuPending(); }
    var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
    if (!pos || presto) { return } // Opera is difficult.

    // Reset the current text selection only if the click is done outside of the selection
    // and 'resetSelectionOnContextMenu' option is true.
    var reset = cm.options.resetSelectionOnContextMenu;
    if (reset && cm.doc.sel.contains(pos) == -1)
      { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll); }

    var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText;
    var wrapperBox = input.wrapper.offsetParent.getBoundingClientRect();
    input.wrapper.style.cssText = "position: static";
    te.style.cssText = "position: absolute; width: 30px; height: 30px;\n      top: " + (e.clientY - wrapperBox.top - 5) + "px; left: " + (e.clientX - wrapperBox.left - 5) + "px;\n      z-index: 1000; background: " + (ie ? "rgba(255, 255, 255, .05)" : "transparent") + ";\n      outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
    var oldScrollY;
    if (webkit) { oldScrollY = te.ownerDocument.defaultView.scrollY; } // Work around Chrome issue (#2712)
    display.input.focus();
    if (webkit) { te.ownerDocument.defaultView.scrollTo(null, oldScrollY); }
    display.input.reset();
    // Adds "Select all" to context menu in FF
    if (!cm.somethingSelected()) { te.value = input.prevInput = " "; }
    input.contextMenuPending = rehide;
    display.selForContextMenu = cm.doc.sel;
    clearTimeout(display.detectingSelectAll);

    // Select-all will be greyed out if there's nothing to select, so
    // this adds a zero-width space so that we can later check whether
    // it got selected.
    function prepareSelectAllHack() {
      if (te.selectionStart != null) {
        var selected = cm.somethingSelected();
        var extval = "\u200b" + (selected ? te.value : "");
        te.value = "\u21da"; // Used to catch context-menu undo
        te.value = extval;
        input.prevInput = selected ? "" : "\u200b";
        te.selectionStart = 1; te.selectionEnd = extval.length;
        // Re-set this, in case some other handler touched the
        // selection in the meantime.
        display.selForContextMenu = cm.doc.sel;
      }
    }
    function rehide() {
      if (input.contextMenuPending != rehide) { return }
      input.contextMenuPending = false;
      input.wrapper.style.cssText = oldWrapperCSS;
      te.style.cssText = oldCSS;
      if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos); }

      // Try to detect the user choosing select-all
      if (te.selectionStart != null) {
        if (!ie || (ie && ie_version < 9)) { prepareSelectAllHack(); }
        var i = 0, poll = function () {
          if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&
              te.selectionEnd > 0 && input.prevInput == "\u200b") {
            operation(cm, selectAll)(cm);
          } else if (i++ < 10) {
            display.detectingSelectAll = setTimeout(poll, 500);
          } else {
            display.selForContextMenu = null;
            display.input.reset();
          }
        };
        display.detectingSelectAll = setTimeout(poll, 200);
      }
    }

    if (ie && ie_version >= 9) { prepareSelectAllHack(); }
    if (captureRightClick) {
      e_stop(e);
      var mouseup = function () {
        off(window, "mouseup", mouseup);
        setTimeout(rehide, 20);
      };
      on(window, "mouseup", mouseup);
    } else {
      setTimeout(rehide, 50);
    }
  };

  TextareaInput.prototype.readOnlyChanged = function (val) {
    if (!val) { this.reset(); }
    this.textarea.disabled = val == "nocursor";
    this.textarea.readOnly = !!val;
  };

  TextareaInput.prototype.setUneditable = function () {};

  TextareaInput.prototype.needsContentAttribute = false;

  function fromTextArea(textarea, options) {
    options = options ? copyObj(options) : {};
    options.value = textarea.value;
    if (!options.tabindex && textarea.tabIndex)
      { options.tabindex = textarea.tabIndex; }
    if (!options.placeholder && textarea.placeholder)
      { options.placeholder = textarea.placeholder; }
    // Set autofocus to true if this textarea is focused, or if it has
    // autofocus and no other element is focused.
    if (options.autofocus == null) {
      var hasFocus = activeElt(rootNode(textarea));
      options.autofocus = hasFocus == textarea ||
        textarea.getAttribute("autofocus") != null && hasFocus == document.body;
    }

    function save() {textarea.value = cm.getValue();}

    var realSubmit;
    if (textarea.form) {
      on(textarea.form, "submit", save);
      // Deplorable hack to make the submit method do the right thing.
      if (!options.leaveSubmitMethodAlone) {
        var form = textarea.form;
        realSubmit = form.submit;
        try {
          var wrappedSubmit = form.submit = function () {
            save();
            form.submit = realSubmit;
            form.submit();
            form.submit = wrappedSubmit;
          };
        } catch(e) {}
      }
    }

    options.finishInit = function (cm) {
      cm.save = save;
      cm.getTextArea = function () { return textarea; };
      cm.toTextArea = function () {
        cm.toTextArea = isNaN; // Prevent this from being ran twice
        save();
        textarea.parentNode.removeChild(cm.getWrapperElement());
        textarea.style.display = "";
        if (textarea.form) {
          off(textarea.form, "submit", save);
          if (!options.leaveSubmitMethodAlone && typeof textarea.form.submit == "function")
            { textarea.form.submit = realSubmit; }
        }
      };
    };

    textarea.style.display = "none";
    var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); },
      options);
    return cm
  }

  function addLegacyProps(CodeMirror) {
    CodeMirror.off = off;
    CodeMirror.on = on;
    CodeMirror.wheelEventPixels = wheelEventPixels;
    CodeMirror.Doc = Doc;
    CodeMirror.splitLines = splitLinesAuto;
    CodeMirror.countColumn = countColumn;
    CodeMirror.findColumn = findColumn;
    CodeMirror.isWordChar = isWordCharBasic;
    CodeMirror.Pass = Pass;
    CodeMirror.signal = signal;
    CodeMirror.Line = Line;
    CodeMirror.changeEnd = changeEnd;
    CodeMirror.scrollbarModel = scrollbarModel;
    CodeMirror.Pos = Pos;
    CodeMirror.cmpPos = cmp;
    CodeMirror.modes = modes;
    CodeMirror.mimeModes = mimeModes;
    CodeMirror.resolveMode = resolveMode;
    CodeMirror.getMode = getMode;
    CodeMirror.modeExtensions = modeExtensions;
    CodeMirror.extendMode = extendMode;
    CodeMirror.copyState = copyState;
    CodeMirror.startState = startState;
    CodeMirror.innerMode = innerMode;
    CodeMirror.commands = commands;
    CodeMirror.keyMap = keyMap;
    CodeMirror.keyName = keyName;
    CodeMirror.isModifierKey = isModifierKey;
    CodeMirror.lookupKey = lookupKey;
    CodeMirror.normalizeKeyMap = normalizeKeyMap;
    CodeMirror.StringStream = StringStream;
    CodeMirror.SharedTextMarker = SharedTextMarker;
    CodeMirror.TextMarker = TextMarker;
    CodeMirror.LineWidget = LineWidget;
    CodeMirror.e_preventDefault = e_preventDefault;
    CodeMirror.e_stopPropagation = e_stopPropagation;
    CodeMirror.e_stop = e_stop;
    CodeMirror.addClass = addClass;
    CodeMirror.contains = contains;
    CodeMirror.rmClass = rmClass;
    CodeMirror.keyNames = keyNames;
  }

  // EDITOR CONSTRUCTOR

  defineOptions(CodeMirror);

  addEditorMethods(CodeMirror);

  // Set up methods on CodeMirror's prototype to redirect to the editor's document.
  var dontDelegate = "iter insert remove copy getEditor constructor".split(" ");
  for (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
    { CodeMirror.prototype[prop] = (function(method) {
      return function() {return method.apply(this.doc, arguments)}
    })(Doc.prototype[prop]); } }

  eventMixin(Doc);
  CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput};

  // Extra arguments are stored as the mode's dependencies, which is
  // used by (legacy) mechanisms like loadmode.js to automatically
  // load a mode. (Preferred mechanism is the require/define calls.)
  CodeMirror.defineMode = function(name/*, mode, …*/) {
    if (!CodeMirror.defaults.mode && name != "null") { CodeMirror.defaults.mode = name; }
    defineMode.apply(this, arguments);
  };

  CodeMirror.defineMIME = defineMIME;

  // Minimal default mode.
  CodeMirror.defineMode("null", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); });
  CodeMirror.defineMIME("text/plain", "null");

  // EXTENSIONS

  CodeMirror.defineExtension = function (name, func) {
    CodeMirror.prototype[name] = func;
  };
  CodeMirror.defineDocExtension = function (name, func) {
    Doc.prototype[name] = func;
  };

  CodeMirror.fromTextArea = fromTextArea;

  addLegacyProps(CodeMirror);

  CodeMirror.version = "5.65.16";

  return CodeMirror;

})));
/* --------------------------------------------------------------
         js/libs/codemirror/javascript.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
"use strict";

CodeMirror.defineMode("javascript", function(config, parserConfig) {
  var indentUnit = config.indentUnit;
  var statementIndent = parserConfig.statementIndent;
  var jsonldMode = parserConfig.jsonld;
  var jsonMode = parserConfig.json || jsonldMode;
  var isTS = parserConfig.typescript;
  var wordRE = parserConfig.wordCharacters || /[\w$\xa1-\uffff]/;

  // Tokenizer

  var keywords = function(){
    function kw(type) {return {type: type, style: "keyword"};}
    var A = kw("keyword a"), B = kw("keyword b"), C = kw("keyword c"), D = kw("keyword d");
    var operator = kw("operator"), atom = {type: "atom", style: "atom"};

    return {
      "if": kw("if"), "while": A, "with": A, "else": B, "do": B, "try": B, "finally": B,
      "return": D, "break": D, "continue": D, "new": kw("new"), "delete": C, "void": C, "throw": C,
      "debugger": kw("debugger"), "var": kw("var"), "const": kw("var"), "let": kw("var"),
      "function": kw("function"), "catch": kw("catch"),
      "for": kw("for"), "switch": kw("switch"), "case": kw("case"), "default": kw("default"),
      "in": operator, "typeof": operator, "instanceof": operator,
      "true": atom, "false": atom, "null": atom, "undefined": atom, "NaN": atom, "Infinity": atom,
      "this": kw("this"), "class": kw("class"), "super": kw("atom"),
      "yield": C, "export": kw("export"), "import": kw("import"), "extends": C,
      "await": C
    };
  }();

  var isOperatorChar = /[+\-*&%=<>!?|~^@]/;
  var isJsonldKeyword = /^@(context|id|value|language|type|container|list|set|reverse|index|base|vocab|graph)"/;

  function readRegexp(stream) {
    var escaped = false, next, inSet = false;
    while ((next = stream.next()) != null) {
      if (!escaped) {
        if (next == "/" && !inSet) return;
        if (next == "[") inSet = true;
        else if (inSet && next == "]") inSet = false;
      }
      escaped = !escaped && next == "\\";
    }
  }

  // Used as scratch variables to communicate multiple values without
  // consing up tons of objects.
  var type, content;
  function ret(tp, style, cont) {
    type = tp; content = cont;
    return style;
  }
  function tokenBase(stream, state) {
    var ch = stream.next();
    if (ch == '"' || ch == "'") {
      state.tokenize = tokenString(ch);
      return state.tokenize(stream, state);
    } else if (ch == "." && stream.match(/^\d+(?:[eE][+\-]?\d+)?/)) {
      return ret("number", "number");
    } else if (ch == "." && stream.match("..")) {
      return ret("spread", "meta");
    } else if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
      return ret(ch);
    } else if (ch == "=" && stream.eat(">")) {
      return ret("=>", "operator");
    } else if (ch == "0" && stream.match(/^(?:x[\da-f]+|o[0-7]+|b[01]+)n?/i)) {
      return ret("number", "number");
    } else if (/\d/.test(ch)) {
      stream.match(/^\d*(?:n|(?:\.\d*)?(?:[eE][+\-]?\d+)?)?/);
      return ret("number", "number");
    } else if (ch == "/") {
      if (stream.eat("*")) {
        state.tokenize = tokenComment;
        return tokenComment(stream, state);
      } else if (stream.eat("/")) {
        stream.skipToEnd();
        return ret("comment", "comment");
      } else if (expressionAllowed(stream, state, 1)) {
        readRegexp(stream);
        stream.match(/^\b(([gimyus])(?![gimyus]*\2))+\b/);
        return ret("regexp", "string-2");
      } else {
        stream.eat("=");
        return ret("operator", "operator", stream.current());
      }
    } else if (ch == "`") {
      state.tokenize = tokenQuasi;
      return tokenQuasi(stream, state);
    } else if (ch == "#") {
      stream.skipToEnd();
      return ret("error", "error");
    } else if (isOperatorChar.test(ch)) {
      if (ch != ">" || !state.lexical || state.lexical.type != ">") {
        if (stream.eat("=")) {
          if (ch == "!" || ch == "=") stream.eat("=")
        } else if (/[<>*+\-]/.test(ch)) {
          stream.eat(ch)
          if (ch == ">") stream.eat(ch)
        }
      }
      return ret("operator", "operator", stream.current());
    } else if (wordRE.test(ch)) {
      stream.eatWhile(wordRE);
      var word = stream.current()
      if (state.lastType != ".") {
        if (keywords.propertyIsEnumerable(word)) {
          var kw = keywords[word]
          return ret(kw.type, kw.style, word)
        }
        if (word == "async" && stream.match(/^(\s|\/\*.*?\*\/)*[\[\(\w]/, false))
          return ret("async", "keyword", word)
      }
      return ret("variable", "variable", word)
    }
  }

  function tokenString(quote) {
    return function(stream, state) {
      var escaped = false, next;
      if (jsonldMode && stream.peek() == "@" && stream.match(isJsonldKeyword)){
        state.tokenize = tokenBase;
        return ret("jsonld-keyword", "meta");
      }
      while ((next = stream.next()) != null) {
        if (next == quote && !escaped) break;
        escaped = !escaped && next == "\\";
      }
      if (!escaped) state.tokenize = tokenBase;
      return ret("string", "string");
    };
  }

  function tokenComment(stream, state) {
    var maybeEnd = false, ch;
    while (ch = stream.next()) {
      if (ch == "/" && maybeEnd) {
        state.tokenize = tokenBase;
        break;
      }
      maybeEnd = (ch == "*");
    }
    return ret("comment", "comment");
  }

  function tokenQuasi(stream, state) {
    var escaped = false, next;
    while ((next = stream.next()) != null) {
      if (!escaped && (next == "`" || next == "$" && stream.eat("{"))) {
        state.tokenize = tokenBase;
        break;
      }
      escaped = !escaped && next == "\\";
    }
    return ret("quasi", "string-2", stream.current());
  }

  var brackets = "([{}])";
  // This is a crude lookahead trick to try and notice that we're
  // parsing the argument patterns for a fat-arrow function before we
  // actually hit the arrow token. It only works if the arrow is on
  // the same line as the arguments and there's no strange noise
  // (comments) in between. Fallback is to only notice when we hit the
  // arrow, and not declare the arguments as locals for the arrow
  // body.
  function findFatArrow(stream, state) {
    if (state.fatArrowAt) state.fatArrowAt = null;
    var arrow = stream.string.indexOf("=>", stream.start);
    if (arrow < 0) return;

    if (isTS) { // Try to skip TypeScript return type declarations after the arguments
      var m = /:\s*(?:\w+(?:<[^>]*>|\[\])?|\{[^}]*\})\s*$/.exec(stream.string.slice(stream.start, arrow))
      if (m) arrow = m.index
    }

    var depth = 0, sawSomething = false;
    for (var pos = arrow - 1; pos >= 0; --pos) {
      var ch = stream.string.charAt(pos);
      var bracket = brackets.indexOf(ch);
      if (bracket >= 0 && bracket < 3) {
        if (!depth) { ++pos; break; }
        if (--depth == 0) { if (ch == "(") sawSomething = true; break; }
      } else if (bracket >= 3 && bracket < 6) {
        ++depth;
      } else if (wordRE.test(ch)) {
        sawSomething = true;
      } else if (/["'\/]/.test(ch)) {
        return;
      } else if (sawSomething && !depth) {
        ++pos;
        break;
      }
    }
    if (sawSomething && !depth) state.fatArrowAt = pos;
  }

  // Parser

  var atomicTypes = {"atom": true, "number": true, "variable": true, "string": true, "regexp": true, "this": true, "jsonld-keyword": true};

  function JSLexical(indented, column, type, align, prev, info) {
    this.indented = indented;
    this.column = column;
    this.type = type;
    this.prev = prev;
    this.info = info;
    if (align != null) this.align = align;
  }

  function inScope(state, varname) {
    for (var v = state.localVars; v; v = v.next)
      if (v.name == varname) return true;
    for (var cx = state.context; cx; cx = cx.prev) {
      for (var v = cx.vars; v; v = v.next)
        if (v.name == varname) return true;
    }
  }

  function parseJS(state, style, type, content, stream) {
    var cc = state.cc;
    // Communicate our context to the combinators.
    // (Less wasteful than consing up a hundred closures on every call.)
    cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc; cx.style = style;

    if (!state.lexical.hasOwnProperty("align"))
      state.lexical.align = true;

    while(true) {
      var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement;
      if (combinator(type, content)) {
        while(cc.length && cc[cc.length - 1].lex)
          cc.pop()();
        if (cx.marked) return cx.marked;
        if (type == "variable" && inScope(state, content)) return "variable-2";
        return style;
      }
    }
  }

  // Combinator utils

  var cx = {state: null, column: null, marked: null, cc: null};
  function pass() {
    for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);
  }
  function cont() {
    pass.apply(null, arguments);
    return true;
  }
  function inList(name, list) {
    for (var v = list; v; v = v.next) if (v.name == name) return true
    return false;
  }
  function register(varname) {
    var state = cx.state;
    cx.marked = "def";
    if (state.context) {
      if (state.lexical.info == "var" && state.context && state.context.block) {
        // FIXME function decls are also not block scoped
        var newContext = registerVarScoped(varname, state.context)
        if (newContext != null) {
          state.context = newContext
          return
        }
      } else if (!inList(varname, state.localVars)) {
        state.localVars = new Var(varname, state.localVars)
        return
      }
    }
    // Fall through means this is global
    if (parserConfig.globalVars && !inList(varname, state.globalVars))
      state.globalVars = new Var(varname, state.globalVars)
  }
  function registerVarScoped(varname, context) {
    if (!context) {
      return null
    } else if (context.block) {
      var inner = registerVarScoped(varname, context.prev)
      if (!inner) return null
      if (inner == context.prev) return context
      return new Context(inner, context.vars, true)
    } else if (inList(varname, context.vars)) {
      return context
    } else {
      return new Context(context.prev, new Var(varname, context.vars), false)
    }
  }

  function isModifier(name) {
    return name == "public" || name == "private" || name == "protected" || name == "abstract" || name == "readonly"
  }

  // Combinators

  function Context(prev, vars, block) { this.prev = prev; this.vars = vars; this.block = block }
  function Var(name, next) { this.name = name; this.next = next }

  var defaultVars = new Var("this", new Var("arguments", null))
  function pushcontext() {
    cx.state.context = new Context(cx.state.context, cx.state.localVars, false)
    cx.state.localVars = defaultVars
  }
  function pushblockcontext() {
    cx.state.context = new Context(cx.state.context, cx.state.localVars, true)
    cx.state.localVars = null
  }
  function popcontext() {
    cx.state.localVars = cx.state.context.vars
    cx.state.context = cx.state.context.prev
  }
  popcontext.lex = true
  function pushlex(type, info) {
    var result = function() {
      var state = cx.state, indent = state.indented;
      if (state.lexical.type == "stat") indent = state.lexical.indented;
      else for (var outer = state.lexical; outer && outer.type == ")" && outer.align; outer = outer.prev)
        indent = outer.indented;
      state.lexical = new JSLexical(indent, cx.stream.column(), type, null, state.lexical, info);
    };
    result.lex = true;
    return result;
  }
  function poplex() {
    var state = cx.state;
    if (state.lexical.prev) {
      if (state.lexical.type == ")")
        state.indented = state.lexical.indented;
      state.lexical = state.lexical.prev;
    }
  }
  poplex.lex = true;

  function expect(wanted) {
    function exp(type) {
      if (type == wanted) return cont();
      else if (wanted == ";" || type == "}" || type == ")" || type == "]") return pass();
      else return cont(exp);
    };
    return exp;
  }

  function statement(type, value) {
    if (type == "var") return cont(pushlex("vardef", value), vardef, expect(";"), poplex);
    if (type == "keyword a") return cont(pushlex("form"), parenExpr, statement, poplex);
    if (type == "keyword b") return cont(pushlex("form"), statement, poplex);
    if (type == "keyword d") return cx.stream.match(/^\s*$/, false) ? cont() : cont(pushlex("stat"), maybeexpression, expect(";"), poplex);
    if (type == "debugger") return cont(expect(";"));
    if (type == "{") return cont(pushlex("}"), pushblockcontext, block, poplex, popcontext);
    if (type == ";") return cont();
    if (type == "if") {
      if (cx.state.lexical.info == "else" && cx.state.cc[cx.state.cc.length - 1] == poplex)
        cx.state.cc.pop()();
      return cont(pushlex("form"), parenExpr, statement, poplex, maybeelse);
    }
    if (type == "function") return cont(functiondef);
    if (type == "for") return cont(pushlex("form"), forspec, statement, poplex);
    if (type == "class" || (isTS && value == "interface")) {
      cx.marked = "keyword"
      return cont(pushlex("form", type == "class" ? type : value), className, poplex)
    }
    if (type == "variable") {
      if (isTS && value == "declare") {
        cx.marked = "keyword"
        return cont(statement)
      } else if (isTS && (value == "module" || value == "enum" || value == "type") && cx.stream.match(/^\s*\w/, false)) {
        cx.marked = "keyword"
        if (value == "enum") return cont(enumdef);
        else if (value == "type") return cont(typename, expect("operator"), typeexpr, expect(";"));
        else return cont(pushlex("form"), pattern, expect("{"), pushlex("}"), block, poplex, poplex)
      } else if (isTS && value == "namespace") {
        cx.marked = "keyword"
        return cont(pushlex("form"), expression, statement, poplex)
      } else if (isTS && value == "abstract") {
        cx.marked = "keyword"
        return cont(statement)
      } else {
        return cont(pushlex("stat"), maybelabel);
      }
    }
    if (type == "switch") return cont(pushlex("form"), parenExpr, expect("{"), pushlex("}", "switch"), pushblockcontext,
                                      block, poplex, poplex, popcontext);
    if (type == "case") return cont(expression, expect(":"));
    if (type == "default") return cont(expect(":"));
    if (type == "catch") return cont(pushlex("form"), pushcontext, maybeCatchBinding, statement, poplex, popcontext);
    if (type == "export") return cont(pushlex("stat"), afterExport, poplex);
    if (type == "import") return cont(pushlex("stat"), afterImport, poplex);
    if (type == "async") return cont(statement)
    if (value == "@") return cont(expression, statement)
    return pass(pushlex("stat"), expression, expect(";"), poplex);
  }
  function maybeCatchBinding(type) {
    if (type == "(") return cont(funarg, expect(")"))
  }
  function expression(type, value) {
    return expressionInner(type, value, false);
  }
  function expressionNoComma(type, value) {
    return expressionInner(type, value, true);
  }
  function parenExpr(type) {
    if (type != "(") return pass()
    return cont(pushlex(")"), expression, expect(")"), poplex)
  }
  function expressionInner(type, value, noComma) {
    if (cx.state.fatArrowAt == cx.stream.start) {
      var body = noComma ? arrowBodyNoComma : arrowBody;
      if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, expect("=>"), body, popcontext);
      else if (type == "variable") return pass(pushcontext, pattern, expect("=>"), body, popcontext);
    }

    var maybeop = noComma ? maybeoperatorNoComma : maybeoperatorComma;
    if (atomicTypes.hasOwnProperty(type)) return cont(maybeop);
    if (type == "function") return cont(functiondef, maybeop);
    if (type == "class" || (isTS && value == "interface")) { cx.marked = "keyword"; return cont(pushlex("form"), classExpression, poplex); }
    if (type == "keyword c" || type == "async") return cont(noComma ? expressionNoComma : expression);
    if (type == "(") return cont(pushlex(")"), maybeexpression, expect(")"), poplex, maybeop);
    if (type == "operator" || type == "spread") return cont(noComma ? expressionNoComma : expression);
    if (type == "[") return cont(pushlex("]"), arrayLiteral, poplex, maybeop);
    if (type == "{") return contCommasep(objprop, "}", null, maybeop);
    if (type == "quasi") return pass(quasi, maybeop);
    if (type == "new") return cont(maybeTarget(noComma));
    if (type == "import") return cont(expression);
    return cont();
  }
  function maybeexpression(type) {
    if (type.match(/[;\}\)\],]/)) return pass();
    return pass(expression);
  }

  function maybeoperatorComma(type, value) {
    if (type == ",") return cont(expression);
    return maybeoperatorNoComma(type, value, false);
  }
  function maybeoperatorNoComma(type, value, noComma) {
    var me = noComma == false ? maybeoperatorComma : maybeoperatorNoComma;
    var expr = noComma == false ? expression : expressionNoComma;
    if (type == "=>") return cont(pushcontext, noComma ? arrowBodyNoComma : arrowBody, popcontext);
    if (type == "operator") {
      if (/\+\+|--/.test(value) || isTS && value == "!") return cont(me);
      if (isTS && value == "<" && cx.stream.match(/^([^>]|<.*?>)*>\s*\(/, false))
        return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, me);
      if (value == "?") return cont(expression, expect(":"), expr);
      return cont(expr);
    }
    if (type == "quasi") { return pass(quasi, me); }
    if (type == ";") return;
    if (type == "(") return contCommasep(expressionNoComma, ")", "call", me);
    if (type == ".") return cont(property, me);
    if (type == "[") return cont(pushlex("]"), maybeexpression, expect("]"), poplex, me);
    if (isTS && value == "as") { cx.marked = "keyword"; return cont(typeexpr, me) }
    if (type == "regexp") {
      cx.state.lastType = cx.marked = "operator"
      cx.stream.backUp(cx.stream.pos - cx.stream.start - 1)
      return cont(expr)
    }
  }
  function quasi(type, value) {
    if (type != "quasi") return pass();
    if (value.slice(value.length - 2) != "${") return cont(quasi);
    return cont(expression, continueQuasi);
  }
  function continueQuasi(type) {
    if (type == "}") {
      cx.marked = "string-2";
      cx.state.tokenize = tokenQuasi;
      return cont(quasi);
    }
  }
  function arrowBody(type) {
    findFatArrow(cx.stream, cx.state);
    return pass(type == "{" ? statement : expression);
  }
  function arrowBodyNoComma(type) {
    findFatArrow(cx.stream, cx.state);
    return pass(type == "{" ? statement : expressionNoComma);
  }
  function maybeTarget(noComma) {
    return function(type) {
      if (type == ".") return cont(noComma ? targetNoComma : target);
      else if (type == "variable" && isTS) return cont(maybeTypeArgs, noComma ? maybeoperatorNoComma : maybeoperatorComma)
      else return pass(noComma ? expressionNoComma : expression);
    };
  }
  function target(_, value) {
    if (value == "target") { cx.marked = "keyword"; return cont(maybeoperatorComma); }
  }
  function targetNoComma(_, value) {
    if (value == "target") { cx.marked = "keyword"; return cont(maybeoperatorNoComma); }
  }
  function maybelabel(type) {
    if (type == ":") return cont(poplex, statement);
    return pass(maybeoperatorComma, expect(";"), poplex);
  }
  function property(type) {
    if (type == "variable") {cx.marked = "property"; return cont();}
  }
  function objprop(type, value) {
    if (type == "async") {
      cx.marked = "property";
      return cont(objprop);
    } else if (type == "variable" || cx.style == "keyword") {
      cx.marked = "property";
      if (value == "get" || value == "set") return cont(getterSetter);
      var m // Work around fat-arrow-detection complication for detecting typescript typed arrow params
      if (isTS && cx.state.fatArrowAt == cx.stream.start && (m = cx.stream.match(/^\s*:\s*/, false)))
        cx.state.fatArrowAt = cx.stream.pos + m[0].length
      return cont(afterprop);
    } else if (type == "number" || type == "string") {
      cx.marked = jsonldMode ? "property" : (cx.style + " property");
      return cont(afterprop);
    } else if (type == "jsonld-keyword") {
      return cont(afterprop);
    } else if (isTS && isModifier(value)) {
      cx.marked = "keyword"
      return cont(objprop)
    } else if (type == "[") {
      return cont(expression, maybetype, expect("]"), afterprop);
    } else if (type == "spread") {
      return cont(expressionNoComma, afterprop);
    } else if (value == "*") {
      cx.marked = "keyword";
      return cont(objprop);
    } else if (type == ":") {
      return pass(afterprop)
    }
  }
  function getterSetter(type) {
    if (type != "variable") return pass(afterprop);
    cx.marked = "property";
    return cont(functiondef);
  }
  function afterprop(type) {
    if (type == ":") return cont(expressionNoComma);
    if (type == "(") return pass(functiondef);
  }
  function commasep(what, end, sep) {
    function proceed(type, value) {
      if (sep ? sep.indexOf(type) > -1 : type == ",") {
        var lex = cx.state.lexical;
        if (lex.info == "call") lex.pos = (lex.pos || 0) + 1;
        return cont(function(type, value) {
          if (type == end || value == end) return pass()
          return pass(what)
        }, proceed);
      }
      if (type == end || value == end) return cont();
      if (sep && sep.indexOf(";") > -1) return pass(what)
      return cont(expect(end));
    }
    return function(type, value) {
      if (type == end || value == end) return cont();
      return pass(what, proceed);
    };
  }
  function contCommasep(what, end, info) {
    for (var i = 3; i < arguments.length; i++)
      cx.cc.push(arguments[i]);
    return cont(pushlex(end, info), commasep(what, end), poplex);
  }
  function block(type) {
    if (type == "}") return cont();
    return pass(statement, block);
  }
  function maybetype(type, value) {
    if (isTS) {
      if (type == ":" || value == "in") return cont(typeexpr);
      if (value == "?") return cont(maybetype);
    }
  }
  function mayberettype(type) {
    if (isTS && type == ":") {
      if (cx.stream.match(/^\s*\w+\s+is\b/, false)) return cont(expression, isKW, typeexpr)
      else return cont(typeexpr)
    }
  }
  function isKW(_, value) {
    if (value == "is") {
      cx.marked = "keyword"
      return cont()
    }
  }
  function typeexpr(type, value) {
    if (value == "keyof" || value == "typeof" || value == "infer") {
      cx.marked = "keyword"
      return cont(value == "typeof" ? expressionNoComma : typeexpr)
    }
    if (type == "variable" || value == "void") {
      cx.marked = "type"
      return cont(afterType)
    }
    if (value == "|" || value == "&") return cont(typeexpr)
    if (type == "string" || type == "number" || type == "atom") return cont(afterType);
    if (type == "[") return cont(pushlex("]"), commasep(typeexpr, "]", ","), poplex, afterType)
    if (type == "{") return cont(pushlex("}"), commasep(typeprop, "}", ",;"), poplex, afterType)
    if (type == "(") return cont(commasep(typearg, ")"), maybeReturnType, afterType)
    if (type == "<") return cont(commasep(typeexpr, ">"), typeexpr)
  }
  function maybeReturnType(type) {
    if (type == "=>") return cont(typeexpr)
  }
  function typeprop(type, value) {
    if (type == "variable" || cx.style == "keyword") {
      cx.marked = "property"
      return cont(typeprop)
    } else if (value == "?" || type == "number" || type == "string") {
      return cont(typeprop)
    } else if (type == ":") {
      return cont(typeexpr)
    } else if (type == "[") {
      return cont(expect("variable"), maybetype, expect("]"), typeprop)
    } else if (type == "(") {
      return pass(functiondecl, typeprop)
    }
  }
  function typearg(type, value) {
    if (type == "variable" && cx.stream.match(/^\s*[?:]/, false) || value == "?") return cont(typearg)
    if (type == ":") return cont(typeexpr)
    if (type == "spread") return cont(typearg)
    return pass(typeexpr)
  }
  function afterType(type, value) {
    if (value == "<") return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, afterType)
    if (value == "|" || type == "." || value == "&") return cont(typeexpr)
    if (type == "[") return cont(typeexpr, expect("]"), afterType)
    if (value == "extends" || value == "implements") { cx.marked = "keyword"; return cont(typeexpr) }
    if (value == "?") return cont(typeexpr, expect(":"), typeexpr)
  }
  function maybeTypeArgs(_, value) {
    if (value == "<") return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, afterType)
  }
  function typeparam() {
    return pass(typeexpr, maybeTypeDefault)
  }
  function maybeTypeDefault(_, value) {
    if (value == "=") return cont(typeexpr)
  }
  function vardef(_, value) {
    if (value == "enum") {cx.marked = "keyword"; return cont(enumdef)}
    return pass(pattern, maybetype, maybeAssign, vardefCont);
  }
  function pattern(type, value) {
    if (isTS && isModifier(value)) { cx.marked = "keyword"; return cont(pattern) }
    if (type == "variable") { register(value); return cont(); }
    if (type == "spread") return cont(pattern);
    if (type == "[") return contCommasep(eltpattern, "]");
    if (type == "{") return contCommasep(proppattern, "}");
  }
  function proppattern(type, value) {
    if (type == "variable" && !cx.stream.match(/^\s*:/, false)) {
      register(value);
      return cont(maybeAssign);
    }
    if (type == "variable") cx.marked = "property";
    if (type == "spread") return cont(pattern);
    if (type == "}") return pass();
    if (type == "[") return cont(expression, expect(']'), expect(':'), proppattern);
    return cont(expect(":"), pattern, maybeAssign);
  }
  function eltpattern() {
    return pass(pattern, maybeAssign)
  }
  function maybeAssign(_type, value) {
    if (value == "=") return cont(expressionNoComma);
  }
  function vardefCont(type) {
    if (type == ",") return cont(vardef);
  }
  function maybeelse(type, value) {
    if (type == "keyword b" && value == "else") return cont(pushlex("form", "else"), statement, poplex);
  }
  function forspec(type, value) {
    if (value == "await") return cont(forspec);
    if (type == "(") return cont(pushlex(")"), forspec1, poplex);
  }
  function forspec1(type) {
    if (type == "var") return cont(vardef, forspec2);
    if (type == "variable") return cont(forspec2);
    return pass(forspec2)
  }
  function forspec2(type, value) {
    if (type == ")") return cont()
    if (type == ";") return cont(forspec2)
    if (value == "in" || value == "of") { cx.marked = "keyword"; return cont(expression, forspec2) }
    return pass(expression, forspec2)
  }
  function functiondef(type, value) {
    if (value == "*") {cx.marked = "keyword"; return cont(functiondef);}
    if (type == "variable") {register(value); return cont(functiondef);}
    if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, mayberettype, statement, popcontext);
    if (isTS && value == "<") return cont(pushlex(">"), commasep(typeparam, ">"), poplex, functiondef)
  }
  function functiondecl(type, value) {
    if (value == "*") {cx.marked = "keyword"; return cont(functiondecl);}
    if (type == "variable") {register(value); return cont(functiondecl);}
    if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, mayberettype, popcontext);
    if (isTS && value == "<") return cont(pushlex(">"), commasep(typeparam, ">"), poplex, functiondecl)
  }
  function typename(type, value) {
    if (type == "keyword" || type == "variable") {
      cx.marked = "type"
      return cont(typename)
    } else if (value == "<") {
      return cont(pushlex(">"), commasep(typeparam, ">"), poplex)
    }
  }
  function funarg(type, value) {
    if (value == "@") cont(expression, funarg)
    if (type == "spread") return cont(funarg);
    if (isTS && isModifier(value)) { cx.marked = "keyword"; return cont(funarg); }
    if (isTS && type == "this") return cont(maybetype, maybeAssign)
    return pass(pattern, maybetype, maybeAssign);
  }
  function classExpression(type, value) {
    // Class expressions may have an optional name.
    if (type == "variable") return className(type, value);
    return classNameAfter(type, value);
  }
  function className(type, value) {
    if (type == "variable") {register(value); return cont(classNameAfter);}
  }
  function classNameAfter(type, value) {
    if (value == "<") return cont(pushlex(">"), commasep(typeparam, ">"), poplex, classNameAfter)
    if (value == "extends" || value == "implements" || (isTS && type == ",")) {
      if (value == "implements") cx.marked = "keyword";
      return cont(isTS ? typeexpr : expression, classNameAfter);
    }
    if (type == "{") return cont(pushlex("}"), classBody, poplex);
  }
  function classBody(type, value) {
    if (type == "async" ||
        (type == "variable" &&
         (value == "static" || value == "get" || value == "set" || (isTS && isModifier(value))) &&
         cx.stream.match(/^\s+[\w$\xa1-\uffff]/, false))) {
      cx.marked = "keyword";
      return cont(classBody);
    }
    if (type == "variable" || cx.style == "keyword") {
      cx.marked = "property";
      return cont(isTS ? classfield : functiondef, classBody);
    }
    if (type == "number" || type == "string") return cont(isTS ? classfield : functiondef, classBody);
    if (type == "[")
      return cont(expression, maybetype, expect("]"), isTS ? classfield : functiondef, classBody)
    if (value == "*") {
      cx.marked = "keyword";
      return cont(classBody);
    }
    if (isTS && type == "(") return pass(functiondecl, classBody)
    if (type == ";" || type == ",") return cont(classBody);
    if (type == "}") return cont();
    if (value == "@") return cont(expression, classBody)
  }
  function classfield(type, value) {
    if (value == "?") return cont(classfield)
    if (type == ":") return cont(typeexpr, maybeAssign)
    if (value == "=") return cont(expressionNoComma)
    var context = cx.state.lexical.prev, isInterface = context && context.info == "interface"
    return pass(isInterface ? functiondecl : functiondef)
  }
  function afterExport(type, value) {
    if (value == "*") { cx.marked = "keyword"; return cont(maybeFrom, expect(";")); }
    if (value == "default") { cx.marked = "keyword"; return cont(expression, expect(";")); }
    if (type == "{") return cont(commasep(exportField, "}"), maybeFrom, expect(";"));
    return pass(statement);
  }
  function exportField(type, value) {
    if (value == "as") { cx.marked = "keyword"; return cont(expect("variable")); }
    if (type == "variable") return pass(expressionNoComma, exportField);
  }
  function afterImport(type) {
    if (type == "string") return cont();
    if (type == "(") return pass(expression);
    return pass(importSpec, maybeMoreImports, maybeFrom);
  }
  function importSpec(type, value) {
    if (type == "{") return contCommasep(importSpec, "}");
    if (type == "variable") register(value);
    if (value == "*") cx.marked = "keyword";
    return cont(maybeAs);
  }
  function maybeMoreImports(type) {
    if (type == ",") return cont(importSpec, maybeMoreImports)
  }
  function maybeAs(_type, value) {
    if (value == "as") { cx.marked = "keyword"; return cont(importSpec); }
  }
  function maybeFrom(_type, value) {
    if (value == "from") { cx.marked = "keyword"; return cont(expression); }
  }
  function arrayLiteral(type) {
    if (type == "]") return cont();
    return pass(commasep(expressionNoComma, "]"));
  }
  function enumdef() {
    return pass(pushlex("form"), pattern, expect("{"), pushlex("}"), commasep(enummember, "}"), poplex, poplex)
  }
  function enummember() {
    return pass(pattern, maybeAssign);
  }

  function isContinuedStatement(state, textAfter) {
    return state.lastType == "operator" || state.lastType == "," ||
      isOperatorChar.test(textAfter.charAt(0)) ||
      /[,.]/.test(textAfter.charAt(0));
  }

  function expressionAllowed(stream, state, backUp) {
    return state.tokenize == tokenBase &&
      /^(?:operator|sof|keyword [bcd]|case|new|export|default|spread|[\[{}\(,;:]|=>)$/.test(state.lastType) ||
      (state.lastType == "quasi" && /\{\s*$/.test(stream.string.slice(0, stream.pos - (backUp || 0))))
  }

  // Interface

  return {
    startState: function(basecolumn) {
      var state = {
        tokenize: tokenBase,
        lastType: "sof",
        cc: [],
        lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false),
        localVars: parserConfig.localVars,
        context: parserConfig.localVars && new Context(null, null, false),
        indented: basecolumn || 0
      };
      if (parserConfig.globalVars && typeof parserConfig.globalVars == "object")
        state.globalVars = parserConfig.globalVars;
      return state;
    },

    token: function(stream, state) {
      if (stream.sol()) {
        if (!state.lexical.hasOwnProperty("align"))
          state.lexical.align = false;
        state.indented = stream.indentation();
        findFatArrow(stream, state);
      }
      if (state.tokenize != tokenComment && stream.eatSpace()) return null;
      var style = state.tokenize(stream, state);
      if (type == "comment") return style;
      state.lastType = type == "operator" && (content == "++" || content == "--") ? "incdec" : type;
      return parseJS(state, style, type, content, stream);
    },

    indent: function(state, textAfter) {
      if (state.tokenize == tokenComment) return CodeMirror.Pass;
      if (state.tokenize != tokenBase) return 0;
      var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical, top
      // Kludge to prevent 'maybelse' from blocking lexical scope pops
      if (!/^\s*else\b/.test(textAfter)) for (var i = state.cc.length - 1; i >= 0; --i) {
        var c = state.cc[i];
        if (c == poplex) lexical = lexical.prev;
        else if (c != maybeelse) break;
      }
      while ((lexical.type == "stat" || lexical.type == "form") &&
             (firstChar == "}" || ((top = state.cc[state.cc.length - 1]) &&
                                   (top == maybeoperatorComma || top == maybeoperatorNoComma) &&
                                   !/^[,\.=+\-*:?[\(]/.test(textAfter))))
        lexical = lexical.prev;
      if (statementIndent && lexical.type == ")" && lexical.prev.type == "stat")
        lexical = lexical.prev;
      var type = lexical.type, closing = firstChar == type;

      if (type == "vardef") return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? lexical.info.length + 1 : 0);
      else if (type == "form" && firstChar == "{") return lexical.indented;
      else if (type == "form") return lexical.indented + indentUnit;
      else if (type == "stat")
        return lexical.indented + (isContinuedStatement(state, textAfter) ? statementIndent || indentUnit : 0);
      else if (lexical.info == "switch" && !closing && parserConfig.doubleIndentSwitch != false)
        return lexical.indented + (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit);
      else if (lexical.align) return lexical.column + (closing ? 0 : 1);
      else return lexical.indented + (closing ? 0 : indentUnit);
    },

    electricInput: /^\s*(?:case .*?:|default:|\{|\})$/,
    blockCommentStart: jsonMode ? null : "/*",
    blockCommentEnd: jsonMode ? null : "*/",
    blockCommentContinue: jsonMode ? null : " * ",
    lineComment: jsonMode ? null : "//",
    fold: "brace",
    closeBrackets: "()[]{}''\"\"``",

    helperType: jsonMode ? "json" : "javascript",
    jsonldMode: jsonldMode,
    jsonMode: jsonMode,

    expressionAllowed: expressionAllowed,

    skipExpression: function(state) {
      var top = state.cc[state.cc.length - 1]
      if (top == expression || top == expressionNoComma) state.cc.pop()
    }
  };
});

CodeMirror.registerHelper("wordChars", "javascript", /[\w$]/);

CodeMirror.defineMIME("text/javascript", "javascript");
CodeMirror.defineMIME("text/ecmascript", "javascript");
CodeMirror.defineMIME("application/javascript", "javascript");
CodeMirror.defineMIME("application/x-javascript", "javascript");
CodeMirror.defineMIME("application/ecmascript", "javascript");
CodeMirror.defineMIME("application/json", {name: "javascript", json: true});
CodeMirror.defineMIME("application/x-json", {name: "javascript", json: true});
CodeMirror.defineMIME("application/ld+json", {name: "javascript", jsonld: true});
CodeMirror.defineMIME("text/typescript", { name: "javascript", typescript: true });
CodeMirror.defineMIME("application/typescript", { name: "javascript", typescript: true });

});
/* --------------------------------------------------------------
         js/libs/codemirror/jshint.js
   -------------------------------------------------------------- */
/*! 2.13.6 */
var JSHINT;
if (typeof window === 'undefined') window = {};
(function () {
var require;
require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
var identifierStartTable = [];

for (var i = 0; i < 128; i++) {
  identifierStartTable[i] =
    i === 36 ||           // $
    i >= 65 && i <= 90 || // A-Z
    i === 95 ||           // _
    i >= 97 && i <= 122;  // a-z
}

var identifierPartTable = [];

for (var i = 0; i < 128; i++) {
  identifierPartTable[i] =
    identifierStartTable[i] || // $, _, A-Z, a-z
    i >= 48 && i <= 57;        // 0-9
}

module.exports = {
  asciiIdentifierStartTable: identifierStartTable,
  asciiIdentifierPartTable: identifierPartTable
};

},{}],2:[function(require,module,exports){
module.exports = /^(?:[\$A-Z_a-z\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u0525\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0621-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971\u0972\u0979-\u097F\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D28\u0D2A-\u0D39\u0D3D\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC\u0EDD\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8B\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10D0-\u10FA\u10FC\u1100-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F0\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191C\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u2094\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2D00-\u2D25\u2D30-\u2D65\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31B7\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCB\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA65F\uA662-\uA66E\uA67F-\uA697\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B\uA78C\uA7FB-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA80-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA2D\uFA30-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC])(?:[\$0-9A-Z_a-z\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u0525\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0621-\u065E\u0660-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0900-\u0939\u093C-\u094E\u0950-\u0955\u0958-\u0963\u0966-\u096F\u0971\u0972\u0979-\u097F\u0981-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C01-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C66-\u0C6F\u0C82\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0D02\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D28\u0D2A-\u0D39\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4D\u0D57\u0D60-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC\u0EDD\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F8B\u0F90-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10D0-\u10FA\u10FC\u1100-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135F\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F0\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17B3\u17B6-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191C\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19DA\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BAA\u1BAE-\u1BB9\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1CD0-\u1CD2\u1CD4-\u1CF2\u1D00-\u1DE6\u1DFD-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u2094\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF1\u2D00-\u2D25\u2D30-\u2D65\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u2E2F\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099\u309A\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31B7\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCB\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA65F\uA662-\uA66F\uA67C\uA67D\uA67F-\uA697\uA6A0-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B\uA78C\uA7FB-\uA827\uA840-\uA873\uA880-\uA8C4\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A\uAA7B\uAA80-\uAAC2\uAADB-\uAADD\uABC0-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA2D\uFA30-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE26\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC])*$/;
},{}],3:[function(require,module,exports){
var str = 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var arr = str.split(',').map(function(code) {
  return parseInt(code, 10);
});
module.exports = arr;
},{}],4:[function(require,module,exports){
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932,64933,64934,64935,64936,64937,64938,64939,64940,64941,64942,64943,64944,64945,64946,64947,64948,64949,64950,64951,64952,64953,64954,64955,64956,64957,64958,64959,64960,64961,64962,64963,64964,64965,64966,64967,65008,65009,65010,65011,65012,65013,65014,65015,65016,65017,65018,65019,65136,65137,65138,65139,65140,65142,65143,65144,65145,65146,65147,65148,65149,65150,65151,65152,65153,65154,65155,65156,65157,65158,65159,65160,65161,65162,65163,65164,65165,65166,65167,65168,65169,65170,65171,65172,65173,65174,65175,65176,65177,65178,65179,65180,65181,65182,65183,65184,65185,65186,65187,65188,65189,65190,65191,65192,65193,65194,65195,65196,65197,65198,65199,65200,65201,65202,65203,65204,65205,65206,65207,65208,65209,65210,65211,65212,65213,65214,65215,65216,65217,65218,65219,65220,65221,65222,65223,65224,65225,65226,65227,65228,65229,65230,65231,65232,65233,65234,65235,65236,65237,65238,65239,65240,65241,65242,65243,65244,65245,65246,65247,65248,65249,65250,65251,65252,65253,65254,65255,65256,65257,65258,65259,65260,65261,65262,65263,65264,65265,65266,65267,65268,65269,65270,65271,65272,65273,65274,65275,65276,65313,65314,65315,65316,65317,65318,65319,65320,65321,65322,65323,65324,65325,65326,65327,65328,65329,65330,65331,65332,65333,65334,65335,65336,65337,65338,65345,65346,65347,65348,65349,65350,65351,65352,65353,65354,65355,65356,65357,65358,65359,65360,65361,65362,65363,65364,65365,65366,65367,65368,65369,65370,65382,65383,65384,65385,65386,65387,65388,65389,65390,65391,65392,65393,65394,65395,65396,65397,65398,65399,65400,65401,65402,65403,65404,65405,65406,65407,65408,65409,65410,65411,65412,65413,65414,65415,65416,65417,65418,65419,65420,65421,65422,65423,65424,65425,65426,65427,65428,65429,65430,65431,65432,65433,65434,65435,65436,65437,65438,65439,65440,65441,65442,65443,65444,65445,65446,65447,65448,65449,65450,65451,65452,65453,65454,65455,65456,65457,65458,65459,65460,65461,65462,65463,65464,65465,65466,65467,65468,65469,65470,65474,65475,65476,65477,65478,65479,65482,65483,65484,65485,65486,65487,65490,65491,65492,65493,65494,65495,65498,65499,65500';
var arr = str.split(',').map(function(code) {
  return parseInt(code, 10);
});
module.exports = arr;
},{}],5:[function(require,module,exports){
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

// when used in node, this will actually load the util module we depend on
// versus loading the builtin util module as happens otherwise
// this is a bug in node module loading as far as I am concerned
var util = require('util/');

var pSlice = Array.prototype.slice;
var hasOwn = Object.prototype.hasOwnProperty;

// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  if (options.message) {
    this.message = options.message;
    this.generatedMessage = false;
  } else {
    this.message = getMessage(this);
    this.generatedMessage = true;
  }
  var stackStartFunction = options.stackStartFunction || fail;

  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, stackStartFunction);
  }
  else {
    // non v8 browsers so we can have a stacktrace
    var err = new Error();
    if (err.stack) {
      var out = err.stack;

      // try to strip useless frames
      var fn_name = stackStartFunction.name;
      var idx = out.indexOf('\n' + fn_name);
      if (idx >= 0) {
        // once we have located the function frame
        // we need to strip out everything before it (and its line)
        var next_line = out.indexOf('\n', idx + 1);
        out = out.substring(next_line + 1);
      }

      this.stack = out;
    }
  }
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function replacer(key, value) {
  if (util.isUndefined(value)) {
    return '' + value;
  }
  if (util.isNumber(value) && !isFinite(value)) {
    return value.toString();
  }
  if (util.isFunction(value) || util.isRegExp(value)) {
    return value.toString();
  }
  return value;
}

function truncate(s, n) {
  if (util.isString(s)) {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}

function getMessage(self) {
  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
         self.operator + ' ' +
         truncate(JSON.stringify(self.expected, replacer), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

function _deepEqual(actual, expected) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;

  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
    if (actual.length != expected.length) return false;

    for (var i = 0; i < actual.length; i++) {
      if (actual[i] !== expected[i]) return false;
    }

    return true;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if (!util.isObject(actual) && !util.isObject(expected)) {
    return actual == expected;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else {
    return objEquiv(actual, expected);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b) {
  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
    return false;
  // an identical 'prototype' property.
  if (a.prototype !== b.prototype) return false;
  // if one is a primitive, the other must be same
  if (util.isPrimitive(a) || util.isPrimitive(b)) {
    return a === b;
  }
  var aIsArgs = isArguments(a),
      bIsArgs = isArguments(b);
  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
    return false;
  if (aIsArgs) {
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b);
  }
  var ka = objectKeys(a),
      kb = objectKeys(b),
      key, i;
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length != kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] != kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key])) return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  } else if (actual instanceof expected) {
    return true;
  } else if (expected.call({}, actual) === true) {
    return true;
  }

  return false;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (util.isString(expected)) {
    message = expected;
    expected = null;
  }

  try {
    block();
  } catch (e) {
    actual = e;
  }

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  if (!shouldThrow && expectedException(actual, expected)) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws.apply(this, [true].concat(pSlice.call(arguments)));
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/message) {
  _throws.apply(this, [false].concat(pSlice.call(arguments)));
};

assert.ifError = function(err) { if (err) {throw err;}};

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    if (hasOwn.call(obj, key)) keys.push(key);
  }
  return keys;
};

},{"util/":8}],6:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],7:[function(require,module,exports){
module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}
},{}],8:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = require('inherits');

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":7,"_process":13,"inherits":6}],9:[function(require,module,exports){
(function (global){
/*global window, global*/
var util = require("util")
var assert = require("assert")
var now = require("date-now")

var slice = Array.prototype.slice
var console
var times = {}

if (typeof global !== "undefined" && global.console) {
    console = global.console
} else if (typeof window !== "undefined" && window.console) {
    console = window.console
} else {
    console = {}
}

var functions = [
    [log, "log"],
    [info, "info"],
    [warn, "warn"],
    [error, "error"],
    [time, "time"],
    [timeEnd, "timeEnd"],
    [trace, "trace"],
    [dir, "dir"],
    [consoleAssert, "assert"]
]

for (var i = 0; i < functions.length; i++) {
    var tuple = functions[i]
    var f = tuple[0]
    var name = tuple[1]

    if (!console[name]) {
        console[name] = f
    }
}

module.exports = console

function log() {}

function info() {
    console.log.apply(console, arguments)
}

function warn() {
    console.log.apply(console, arguments)
}

function error() {
    console.warn.apply(console, arguments)
}

function time(label) {
    times[label] = now()
}

function timeEnd(label) {
    var time = times[label]
    if (!time) {
        throw new Error("No such label: " + label)
    }

    var duration = now() - time
    console.log(label + ": " + duration + "ms")
}

function trace() {
    var err = new Error()
    err.name = "Trace"
    err.message = util.format.apply(null, arguments)
    console.error(err.stack)
}

function dir(object) {
    console.log(util.inspect(object) + "\n")
}

function consoleAssert(expression) {
    if (!expression) {
        var arr = slice.call(arguments, 1)
        assert.ok(false, util.format.apply(null, arr))
    }
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"assert":5,"date-now":10,"util":16}],10:[function(require,module,exports){
module.exports = now

function now() {
    return new Date().getTime()
}

},{}],11:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

function EventEmitter() {
  this._events = this._events || {};
  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
  if (!isNumber(n) || n < 0 || isNaN(n))
    throw TypeError('n must be a positive number');
  this._maxListeners = n;
  return this;
};

EventEmitter.prototype.emit = function(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};

  // If there is no 'error' event listener then throw.
  if (type === 'error') {
    if (!this._events.error ||
        (isObject(this._events.error) && !this._events.error.length)) {
      er = arguments[1];
      if (er instanceof Error) {
        throw er; // Unhandled 'error' event
      }
      throw TypeError('Uncaught, unspecified "error" event.');
    }
  }

  handler = this._events[type];

  if (isUndefined(handler))
    return false;

  if (isFunction(handler)) {
    switch (arguments.length) {
      // fast cases
      case 1:
        handler.call(this);
        break;
      case 2:
        handler.call(this, arguments[1]);
        break;
      case 3:
        handler.call(this, arguments[1], arguments[2]);
        break;
      // slower
      default:
        len = arguments.length;
        args = new Array(len - 1);
        for (i = 1; i < len; i++)
          args[i - 1] = arguments[i];
        handler.apply(this, args);
    }
  } else if (isObject(handler)) {
    len = arguments.length;
    args = new Array(len - 1);
    for (i = 1; i < len; i++)
      args[i - 1] = arguments[i];

    listeners = handler.slice();
    len = listeners.length;
    for (i = 0; i < len; i++)
      listeners[i].apply(this, args);
  }

  return true;
};

EventEmitter.prototype.addListener = function(type, listener) {
  var m;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events)
    this._events = {};

  // To avoid recursion in the case that type === "newListener"! Before
  // adding it to the listeners, first emit "newListener".
  if (this._events.newListener)
    this.emit('newListener', type,
              isFunction(listener.listener) ?
              listener.listener : listener);

  if (!this._events[type])
    // Optimize the case of one listener. Don't need the extra array object.
    this._events[type] = listener;
  else if (isObject(this._events[type]))
    // If we've already got an array, just append.
    this._events[type].push(listener);
  else
    // Adding the second element, need to change to array.
    this._events[type] = [this._events[type], listener];

  // Check for listener leak
  if (isObject(this._events[type]) && !this._events[type].warned) {
    var m;
    if (!isUndefined(this._maxListeners)) {
      m = this._maxListeners;
    } else {
      m = EventEmitter.defaultMaxListeners;
    }

    if (m && m > 0 && this._events[type].length > m) {
      this._events[type].warned = true;
      console.error('(node) warning: possible EventEmitter memory ' +
                    'leak detected. %d listeners added. ' +
                    'Use emitter.setMaxListeners() to increase limit.',
                    this._events[type].length);
      if (typeof console.trace === 'function') {
        // not supported in IE 10
        console.trace();
      }
    }
  }

  return this;
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.once = function(type, listener) {
  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  var fired = false;

  function g() {
    this.removeListener(type, g);

    if (!fired) {
      fired = true;
      listener.apply(this, arguments);
    }
  }

  g.listener = listener;
  this.on(type, g);

  return this;
};

// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
  var list, position, length, i;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events || !this._events[type])
    return this;

  list = this._events[type];
  length = list.length;
  position = -1;

  if (list === listener ||
      (isFunction(list.listener) && list.listener === listener)) {
    delete this._events[type];
    if (this._events.removeListener)
      this.emit('removeListener', type, listener);

  } else if (isObject(list)) {
    for (i = length; i-- > 0;) {
      if (list[i] === listener ||
          (list[i].listener && list[i].listener === listener)) {
        position = i;
        break;
      }
    }

    if (position < 0)
      return this;

    if (list.length === 1) {
      list.length = 0;
      delete this._events[type];
    } else {
      list.splice(position, 1);
    }

    if (this._events.removeListener)
      this.emit('removeListener', type, listener);
  }

  return this;
};

EventEmitter.prototype.removeAllListeners = function(type) {
  var key, listeners;

  if (!this._events)
    return this;

  // not listening for removeListener, no need to emit
  if (!this._events.removeListener) {
    if (arguments.length === 0)
      this._events = {};
    else if (this._events[type])
      delete this._events[type];
    return this;
  }

  // emit removeListener for all listeners on all events
  if (arguments.length === 0) {
    for (key in this._events) {
      if (key === 'removeListener') continue;
      this.removeAllListeners(key);
    }
    this.removeAllListeners('removeListener');
    this._events = {};
    return this;
  }

  listeners = this._events[type];

  if (isFunction(listeners)) {
    this.removeListener(type, listeners);
  } else {
    // LIFO order
    while (listeners.length)
      this.removeListener(type, listeners[listeners.length - 1]);
  }
  delete this._events[type];

  return this;
};

EventEmitter.prototype.listeners = function(type) {
  var ret;
  if (!this._events || !this._events[type])
    ret = [];
  else if (isFunction(this._events[type]))
    ret = [this._events[type]];
  else
    ret = this._events[type].slice();
  return ret;
};

EventEmitter.listenerCount = function(emitter, type) {
  var ret;
  if (!emitter._events || !emitter._events[type])
    ret = 0;
  else if (isFunction(emitter._events[type]))
    ret = 1;
  else
    ret = emitter._events[type].length;
  return ret;
};

function isFunction(arg) {
  return typeof arg === 'function';
}

function isNumber(arg) {
  return typeof arg === 'number';
}

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}

function isUndefined(arg) {
  return arg === void 0;
}

},{}],12:[function(require,module,exports){
(function (global){
/**
 * @license
 * Lodash <https://lodash.com/>
 * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 */
;(function() {

  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
  var undefined;

  /** Used as the semantic version number. */
  var VERSION = '4.17.21';

  /** Used as the size to enable large array optimizations. */
  var LARGE_ARRAY_SIZE = 200;

  /** Error message constants. */
  var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',
      FUNC_ERROR_TEXT = 'Expected a function',
      INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';

  /** Used to stand-in for `undefined` hash values. */
  var HASH_UNDEFINED = '__lodash_hash_undefined__';

  /** Used as the maximum memoize cache size. */
  var MAX_MEMOIZE_SIZE = 500;

  /** Used as the internal argument placeholder. */
  var PLACEHOLDER = '__lodash_placeholder__';

  /** Used to compose bitmasks for cloning. */
  var CLONE_DEEP_FLAG = 1,
      CLONE_FLAT_FLAG = 2,
      CLONE_SYMBOLS_FLAG = 4;

  /** Used to compose bitmasks for value comparisons. */
  var COMPARE_PARTIAL_FLAG = 1,
      COMPARE_UNORDERED_FLAG = 2;

  /** Used to compose bitmasks for function metadata. */
  var WRAP_BIND_FLAG = 1,
      WRAP_BIND_KEY_FLAG = 2,
      WRAP_CURRY_BOUND_FLAG = 4,
      WRAP_CURRY_FLAG = 8,
      WRAP_CURRY_RIGHT_FLAG = 16,
      WRAP_PARTIAL_FLAG = 32,
      WRAP_PARTIAL_RIGHT_FLAG = 64,
      WRAP_ARY_FLAG = 128,
      WRAP_REARG_FLAG = 256,
      WRAP_FLIP_FLAG = 512;

  /** Used as default options for `_.truncate`. */
  var DEFAULT_TRUNC_LENGTH = 30,
      DEFAULT_TRUNC_OMISSION = '...';

  /** Used to detect hot functions by number of calls within a span of milliseconds. */
  var HOT_COUNT = 800,
      HOT_SPAN = 16;

  /** Used to indicate the type of lazy iteratees. */
  var LAZY_FILTER_FLAG = 1,
      LAZY_MAP_FLAG = 2,
      LAZY_WHILE_FLAG = 3;

  /** Used as references for various `Number` constants. */
  var INFINITY = 1 / 0,
      MAX_SAFE_INTEGER = 9007199254740991,
      MAX_INTEGER = 1.7976931348623157e+308,
      NAN = 0 / 0;

  /** Used as references for the maximum length and index of an array. */
  var MAX_ARRAY_LENGTH = 4294967295,
      MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
      HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;

  /** Used to associate wrap methods with their bit flags. */
  var wrapFlags = [
    ['ary', WRAP_ARY_FLAG],
    ['bind', WRAP_BIND_FLAG],
    ['bindKey', WRAP_BIND_KEY_FLAG],
    ['curry', WRAP_CURRY_FLAG],
    ['curryRight', WRAP_CURRY_RIGHT_FLAG],
    ['flip', WRAP_FLIP_FLAG],
    ['partial', WRAP_PARTIAL_FLAG],
    ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],
    ['rearg', WRAP_REARG_FLAG]
  ];

  /** `Object#toString` result references. */
  var argsTag = '[object Arguments]',
      arrayTag = '[object Array]',
      asyncTag = '[object AsyncFunction]',
      boolTag = '[object Boolean]',
      dateTag = '[object Date]',
      domExcTag = '[object DOMException]',
      errorTag = '[object Error]',
      funcTag = '[object Function]',
      genTag = '[object GeneratorFunction]',
      mapTag = '[object Map]',
      numberTag = '[object Number]',
      nullTag = '[object Null]',
      objectTag = '[object Object]',
      promiseTag = '[object Promise]',
      proxyTag = '[object Proxy]',
      regexpTag = '[object RegExp]',
      setTag = '[object Set]',
      stringTag = '[object String]',
      symbolTag = '[object Symbol]',
      undefinedTag = '[object Undefined]',
      weakMapTag = '[object WeakMap]',
      weakSetTag = '[object WeakSet]';

  var arrayBufferTag = '[object ArrayBuffer]',
      dataViewTag = '[object DataView]',
      float32Tag = '[object Float32Array]',
      float64Tag = '[object Float64Array]',
      int8Tag = '[object Int8Array]',
      int16Tag = '[object Int16Array]',
      int32Tag = '[object Int32Array]',
      uint8Tag = '[object Uint8Array]',
      uint8ClampedTag = '[object Uint8ClampedArray]',
      uint16Tag = '[object Uint16Array]',
      uint32Tag = '[object Uint32Array]';

  /** Used to match empty string literals in compiled template source. */
  var reEmptyStringLeading = /\b__p \+= '';/g,
      reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
      reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;

  /** Used to match HTML entities and HTML characters. */
  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
      reUnescapedHtml = /[&<>"']/g,
      reHasEscapedHtml = RegExp(reEscapedHtml.source),
      reHasUnescapedHtml = RegExp(reUnescapedHtml.source);

  /** Used to match template delimiters. */
  var reEscape = /<%-([\s\S]+?)%>/g,
      reEvaluate = /<%([\s\S]+?)%>/g,
      reInterpolate = /<%=([\s\S]+?)%>/g;

  /** Used to match property names within property paths. */
  var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
      reIsPlainProp = /^\w*$/,
      rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;

  /**
   * Used to match `RegExp`
   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
   */
  var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
      reHasRegExpChar = RegExp(reRegExpChar.source);

  /** Used to match leading whitespace. */
  var reTrimStart = /^\s+/;

  /** Used to match a single whitespace character. */
  var reWhitespace = /\s/;

  /** Used to match wrap detail comments. */
  var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/,
      reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/,
      reSplitDetails = /,? & /;

  /** Used to match words composed of alphanumeric characters. */
  var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;

  /**
   * Used to validate the `validate` option in `_.template` variable.
   *
   * Forbids characters which could potentially change the meaning of the function argument definition:
   * - "()," (modification of function parameters)
   * - "=" (default value)
   * - "[]{}" (destructuring of function parameters)
   * - "/" (beginning of a comment)
   * - whitespace
   */
  var reForbiddenIdentifierChars = /[()=,{}\[\]\/\s]/;

  /** Used to match backslashes in property paths. */
  var reEscapeChar = /\\(\\)?/g;

  /**
   * Used to match
   * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
   */
  var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;

  /** Used to match `RegExp` flags from their coerced string values. */
  var reFlags = /\w*$/;

  /** Used to detect bad signed hexadecimal string values. */
  var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;

  /** Used to detect binary string values. */
  var reIsBinary = /^0b[01]+$/i;

  /** Used to detect host constructors (Safari). */
  var reIsHostCtor = /^\[object .+?Constructor\]$/;

  /** Used to detect octal string values. */
  var reIsOctal = /^0o[0-7]+$/i;

  /** Used to detect unsigned integer values. */
  var reIsUint = /^(?:0|[1-9]\d*)$/;

  /** Used to match Latin Unicode letters (excluding mathematical operators). */
  var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;

  /** Used to ensure capturing order of template delimiters. */
  var reNoMatch = /($^)/;

  /** Used to match unescaped characters in compiled string literals. */
  var reUnescapedString = /['\n\r\u2028\u2029\\]/g;

  /** Used to compose unicode character classes. */
  var rsAstralRange = '\\ud800-\\udfff',
      rsComboMarksRange = '\\u0300-\\u036f',
      reComboHalfMarksRange = '\\ufe20-\\ufe2f',
      rsComboSymbolsRange = '\\u20d0-\\u20ff',
      rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
      rsDingbatRange = '\\u2700-\\u27bf',
      rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
      rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
      rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
      rsPunctuationRange = '\\u2000-\\u206f',
      rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
      rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
      rsVarRange = '\\ufe0e\\ufe0f',
      rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;

  /** Used to compose unicode capture groups. */
  var rsApos = "['\u2019]",
      rsAstral = '[' + rsAstralRange + ']',
      rsBreak = '[' + rsBreakRange + ']',
      rsCombo = '[' + rsComboRange + ']',
      rsDigits = '\\d+',
      rsDingbat = '[' + rsDingbatRange + ']',
      rsLower = '[' + rsLowerRange + ']',
      rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
      rsFitz = '\\ud83c[\\udffb-\\udfff]',
      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
      rsNonAstral = '[^' + rsAstralRange + ']',
      rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
      rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
      rsUpper = '[' + rsUpperRange + ']',
      rsZWJ = '\\u200d';

  /** Used to compose unicode regexes. */
  var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
      rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
      rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
      rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
      reOptMod = rsModifier + '?',
      rsOptVar = '[' + rsVarRange + ']?',
      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
      rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
      rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
      rsSeq = rsOptVar + reOptMod + rsOptJoin,
      rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';

  /** Used to match apostrophes. */
  var reApos = RegExp(rsApos, 'g');

  /**
   * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
   * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
   */
  var reComboMark = RegExp(rsCombo, 'g');

  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');

  /** Used to match complex or compound words. */
  var reUnicodeWord = RegExp([
    rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
    rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
    rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
    rsUpper + '+' + rsOptContrUpper,
    rsOrdUpper,
    rsOrdLower,
    rsDigits,
    rsEmoji
  ].join('|'), 'g');

  /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
  var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');

  /** Used to detect strings that need a more robust regexp to match words. */
  var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;

  /** Used to assign default `context` object properties. */
  var contextProps = [
    'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',
    'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',
    'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',
    'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
    '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'
  ];

  /** Used to make template sourceURLs easier to identify. */
  var templateCounter = -1;

  /** Used to identify `toStringTag` values of typed arrays. */
  var typedArrayTags = {};
  typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
  typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
  typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
  typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
  typedArrayTags[uint32Tag] = true;
  typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
  typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
  typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
  typedArrayTags[errorTag] = typedArrayTags[funcTag] =
  typedArrayTags[mapTag] = typedArrayTags[numberTag] =
  typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
  typedArrayTags[setTag] = typedArrayTags[stringTag] =
  typedArrayTags[weakMapTag] = false;

  /** Used to identify `toStringTag` values supported by `_.clone`. */
  var cloneableTags = {};
  cloneableTags[argsTag] = cloneableTags[arrayTag] =
  cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
  cloneableTags[boolTag] = cloneableTags[dateTag] =
  cloneableTags[float32Tag] = cloneableTags[float64Tag] =
  cloneableTags[int8Tag] = cloneableTags[int16Tag] =
  cloneableTags[int32Tag] = cloneableTags[mapTag] =
  cloneableTags[numberTag] = cloneableTags[objectTag] =
  cloneableTags[regexpTag] = cloneableTags[setTag] =
  cloneableTags[stringTag] = cloneableTags[symbolTag] =
  cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
  cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
  cloneableTags[errorTag] = cloneableTags[funcTag] =
  cloneableTags[weakMapTag] = false;

  /** Used to map Latin Unicode letters to basic Latin letters. */
  var deburredLetters = {
    // Latin-1 Supplement block.
    '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
    '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
    '\xc7': 'C',  '\xe7': 'c',
    '\xd0': 'D',  '\xf0': 'd',
    '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
    '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
    '\xcc': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
    '\xec': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
    '\xd1': 'N',  '\xf1': 'n',
    '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
    '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
    '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
    '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
    '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
    '\xc6': 'Ae', '\xe6': 'ae',
    '\xde': 'Th', '\xfe': 'th',
    '\xdf': 'ss',
    // Latin Extended-A block.
    '\u0100': 'A',  '\u0102': 'A', '\u0104': 'A',
    '\u0101': 'a',  '\u0103': 'a', '\u0105': 'a',
    '\u0106': 'C',  '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
    '\u0107': 'c',  '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
    '\u010e': 'D',  '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
    '\u0112': 'E',  '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
    '\u0113': 'e',  '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
    '\u011c': 'G',  '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
    '\u011d': 'g',  '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
    '\u0124': 'H',  '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
    '\u0128': 'I',  '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
    '\u0129': 'i',  '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
    '\u0134': 'J',  '\u0135': 'j',
    '\u0136': 'K',  '\u0137': 'k', '\u0138': 'k',
    '\u0139': 'L',  '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
    '\u013a': 'l',  '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
    '\u0143': 'N',  '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
    '\u0144': 'n',  '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
    '\u014c': 'O',  '\u014e': 'O', '\u0150': 'O',
    '\u014d': 'o',  '\u014f': 'o', '\u0151': 'o',
    '\u0154': 'R',  '\u0156': 'R', '\u0158': 'R',
    '\u0155': 'r',  '\u0157': 'r', '\u0159': 'r',
    '\u015a': 'S',  '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
    '\u015b': 's',  '\u015d': 's', '\u015f': 's', '\u0161': 's',
    '\u0162': 'T',  '\u0164': 'T', '\u0166': 'T',
    '\u0163': 't',  '\u0165': 't', '\u0167': 't',
    '\u0168': 'U',  '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
    '\u0169': 'u',  '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
    '\u0174': 'W',  '\u0175': 'w',
    '\u0176': 'Y',  '\u0177': 'y', '\u0178': 'Y',
    '\u0179': 'Z',  '\u017b': 'Z', '\u017d': 'Z',
    '\u017a': 'z',  '\u017c': 'z', '\u017e': 'z',
    '\u0132': 'IJ', '\u0133': 'ij',
    '\u0152': 'Oe', '\u0153': 'oe',
    '\u0149': "'n", '\u017f': 's'
  };

  /** Used to map characters to HTML entities. */
  var htmlEscapes = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#39;'
  };

  /** Used to map HTML entities to characters. */
  var htmlUnescapes = {
    '&amp;': '&',
    '&lt;': '<',
    '&gt;': '>',
    '&quot;': '"',
    '&#39;': "'"
  };

  /** Used to escape characters for inclusion in compiled string literals. */
  var stringEscapes = {
    '\\': '\\',
    "'": "'",
    '\n': 'n',
    '\r': 'r',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  /** Built-in method references without a dependency on `root`. */
  var freeParseFloat = parseFloat,
      freeParseInt = parseInt;

  /** Detect free variable `global` from Node.js. */
  var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;

  /** Detect free variable `self`. */
  var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

  /** Used as a reference to the global object. */
  var root = freeGlobal || freeSelf || Function('return this')();

  /** Detect free variable `exports`. */
  var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;

  /** Detect free variable `module`. */
  var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;

  /** Detect the popular CommonJS extension `module.exports`. */
  var moduleExports = freeModule && freeModule.exports === freeExports;

  /** Detect free variable `process` from Node.js. */
  var freeProcess = moduleExports && freeGlobal.process;

  /** Used to access faster Node.js helpers. */
  var nodeUtil = (function() {
    try {
      // Use `util.types` for Node.js 10+.
      var types = freeModule && freeModule.require && freeModule.require('util').types;

      if (types) {
        return types;
      }

      // Legacy `process.binding('util')` for Node.js < 10.
      return freeProcess && freeProcess.binding && freeProcess.binding('util');
    } catch (e) {}
  }());

  /* Node.js helper references. */
  var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,
      nodeIsDate = nodeUtil && nodeUtil.isDate,
      nodeIsMap = nodeUtil && nodeUtil.isMap,
      nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,
      nodeIsSet = nodeUtil && nodeUtil.isSet,
      nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;

  /*--------------------------------------------------------------------------*/

  /**
   * A faster alternative to `Function#apply`, this function invokes `func`
   * with the `this` binding of `thisArg` and the arguments of `args`.
   *
   * @private
   * @param {Function} func The function to invoke.
   * @param {*} thisArg The `this` binding of `func`.
   * @param {Array} args The arguments to invoke `func` with.
   * @returns {*} Returns the result of `func`.
   */
  function apply(func, thisArg, args) {
    switch (args.length) {
      case 0: return func.call(thisArg);
      case 1: return func.call(thisArg, args[0]);
      case 2: return func.call(thisArg, args[0], args[1]);
      case 3: return func.call(thisArg, args[0], args[1], args[2]);
    }
    return func.apply(thisArg, args);
  }

  /**
   * A specialized version of `baseAggregator` for arrays.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} setter The function to set `accumulator` values.
   * @param {Function} iteratee The iteratee to transform keys.
   * @param {Object} accumulator The initial aggregated object.
   * @returns {Function} Returns `accumulator`.
   */
  function arrayAggregator(array, setter, iteratee, accumulator) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      var value = array[index];
      setter(accumulator, value, iteratee(value), array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.forEach` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns `array`.
   */
  function arrayEach(array, iteratee) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (iteratee(array[index], index, array) === false) {
        break;
      }
    }
    return array;
  }

  /**
   * A specialized version of `_.forEachRight` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns `array`.
   */
  function arrayEachRight(array, iteratee) {
    var length = array == null ? 0 : array.length;

    while (length--) {
      if (iteratee(array[length], length, array) === false) {
        break;
      }
    }
    return array;
  }

  /**
   * A specialized version of `_.every` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {boolean} Returns `true` if all elements pass the predicate check,
   *  else `false`.
   */
  function arrayEvery(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (!predicate(array[index], index, array)) {
        return false;
      }
    }
    return true;
  }

  /**
   * A specialized version of `_.filter` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {Array} Returns the new filtered array.
   */
  function arrayFilter(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length,
        resIndex = 0,
        result = [];

    while (++index < length) {
      var value = array[index];
      if (predicate(value, index, array)) {
        result[resIndex++] = value;
      }
    }
    return result;
  }

  /**
   * A specialized version of `_.includes` for arrays without support for
   * specifying an index to search from.
   *
   * @private
   * @param {Array} [array] The array to inspect.
   * @param {*} target The value to search for.
   * @returns {boolean} Returns `true` if `target` is found, else `false`.
   */
  function arrayIncludes(array, value) {
    var length = array == null ? 0 : array.length;
    return !!length && baseIndexOf(array, value, 0) > -1;
  }

  /**
   * This function is like `arrayIncludes` except that it accepts a comparator.
   *
   * @private
   * @param {Array} [array] The array to inspect.
   * @param {*} target The value to search for.
   * @param {Function} comparator The comparator invoked per element.
   * @returns {boolean} Returns `true` if `target` is found, else `false`.
   */
  function arrayIncludesWith(array, value, comparator) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (comparator(value, array[index])) {
        return true;
      }
    }
    return false;
  }

  /**
   * A specialized version of `_.map` for arrays without support for iteratee
   * shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns the new mapped array.
   */
  function arrayMap(array, iteratee) {
    var index = -1,
        length = array == null ? 0 : array.length,
        result = Array(length);

    while (++index < length) {
      result[index] = iteratee(array[index], index, array);
    }
    return result;
  }

  /**
   * Appends the elements of `values` to `array`.
   *
   * @private
   * @param {Array} array The array to modify.
   * @param {Array} values The values to append.
   * @returns {Array} Returns `array`.
   */
  function arrayPush(array, values) {
    var index = -1,
        length = values.length,
        offset = array.length;

    while (++index < length) {
      array[offset + index] = values[index];
    }
    return array;
  }

  /**
   * A specialized version of `_.reduce` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} [accumulator] The initial value.
   * @param {boolean} [initAccum] Specify using the first element of `array` as
   *  the initial value.
   * @returns {*} Returns the accumulated value.
   */
  function arrayReduce(array, iteratee, accumulator, initAccum) {
    var index = -1,
        length = array == null ? 0 : array.length;

    if (initAccum && length) {
      accumulator = array[++index];
    }
    while (++index < length) {
      accumulator = iteratee(accumulator, array[index], index, array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.reduceRight` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} [accumulator] The initial value.
   * @param {boolean} [initAccum] Specify using the last element of `array` as
   *  the initial value.
   * @returns {*} Returns the accumulated value.
   */
  function arrayReduceRight(array, iteratee, accumulator, initAccum) {
    var length = array == null ? 0 : array.length;
    if (initAccum && length) {
      accumulator = array[--length];
    }
    while (length--) {
      accumulator = iteratee(accumulator, array[length], length, array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.some` for arrays without support for iteratee
   * shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {boolean} Returns `true` if any element passes the predicate check,
   *  else `false`.
   */
  function arraySome(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (predicate(array[index], index, array)) {
        return true;
      }
    }
    return false;
  }

  /**
   * Gets the size of an ASCII `string`.
   *
   * @private
   * @param {string} string The string inspect.
   * @returns {number} Returns the string size.
   */
  var asciiSize = baseProperty('length');

  /**
   * Converts an ASCII `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function asciiToArray(string) {
    return string.split('');
  }

  /**
   * Splits an ASCII `string` into an array of its words.
   *
   * @private
   * @param {string} The string to inspect.
   * @returns {Array} Returns the words of `string`.
   */
  function asciiWords(string) {
    return string.match(reAsciiWord) || [];
  }

  /**
   * The base implementation of methods like `_.findKey` and `_.findLastKey`,
   * without support for iteratee shorthands, which iterates over `collection`
   * using `eachFunc`.
   *
   * @private
   * @param {Array|Object} collection The collection to inspect.
   * @param {Function} predicate The function invoked per iteration.
   * @param {Function} eachFunc The function to iterate over `collection`.
   * @returns {*} Returns the found element or its key, else `undefined`.
   */
  function baseFindKey(collection, predicate, eachFunc) {
    var result;
    eachFunc(collection, function(value, key, collection) {
      if (predicate(value, key, collection)) {
        result = key;
        return false;
      }
    });
    return result;
  }

  /**
   * The base implementation of `_.findIndex` and `_.findLastIndex` without
   * support for iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {Function} predicate The function invoked per iteration.
   * @param {number} fromIndex The index to search from.
   * @param {boolean} [fromRight] Specify iterating from right to left.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseFindIndex(array, predicate, fromIndex, fromRight) {
    var length = array.length,
        index = fromIndex + (fromRight ? 1 : -1);

    while ((fromRight ? index-- : ++index < length)) {
      if (predicate(array[index], index, array)) {
        return index;
      }
    }
    return -1;
  }

  /**
   * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseIndexOf(array, value, fromIndex) {
    return value === value
      ? strictIndexOf(array, value, fromIndex)
      : baseFindIndex(array, baseIsNaN, fromIndex);
  }

  /**
   * This function is like `baseIndexOf` except that it accepts a comparator.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @param {Function} comparator The comparator invoked per element.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseIndexOfWith(array, value, fromIndex, comparator) {
    var index = fromIndex - 1,
        length = array.length;

    while (++index < length) {
      if (comparator(array[index], value)) {
        return index;
      }
    }
    return -1;
  }

  /**
   * The base implementation of `_.isNaN` without support for number objects.
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
   */
  function baseIsNaN(value) {
    return value !== value;
  }

  /**
   * The base implementation of `_.mean` and `_.meanBy` without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {number} Returns the mean.
   */
  function baseMean(array, iteratee) {
    var length = array == null ? 0 : array.length;
    return length ? (baseSum(array, iteratee) / length) : NAN;
  }

  /**
   * The base implementation of `_.property` without support for deep paths.
   *
   * @private
   * @param {string} key The key of the property to get.
   * @returns {Function} Returns the new accessor function.
   */
  function baseProperty(key) {
    return function(object) {
      return object == null ? undefined : object[key];
    };
  }

  /**
   * The base implementation of `_.propertyOf` without support for deep paths.
   *
   * @private
   * @param {Object} object The object to query.
   * @returns {Function} Returns the new accessor function.
   */
  function basePropertyOf(object) {
    return function(key) {
      return object == null ? undefined : object[key];
    };
  }

  /**
   * The base implementation of `_.reduce` and `_.reduceRight`, without support
   * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
   *
   * @private
   * @param {Array|Object} collection The collection to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} accumulator The initial value.
   * @param {boolean} initAccum Specify using the first or last element of
   *  `collection` as the initial value.
   * @param {Function} eachFunc The function to iterate over `collection`.
   * @returns {*} Returns the accumulated value.
   */
  function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
    eachFunc(collection, function(value, index, collection) {
      accumulator = initAccum
        ? (initAccum = false, value)
        : iteratee(accumulator, value, index, collection);
    });
    return accumulator;
  }

  /**
   * The base implementation of `_.sortBy` which uses `comparer` to define the
   * sort order of `array` and replaces criteria objects with their corresponding
   * values.
   *
   * @private
   * @param {Array} array The array to sort.
   * @param {Function} comparer The function to define sort order.
   * @returns {Array} Returns `array`.
   */
  function baseSortBy(array, comparer) {
    var length = array.length;

    array.sort(comparer);
    while (length--) {
      array[length] = array[length].value;
    }
    return array;
  }

  /**
   * The base implementation of `_.sum` and `_.sumBy` without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {number} Returns the sum.
   */
  function baseSum(array, iteratee) {
    var result,
        index = -1,
        length = array.length;

    while (++index < length) {
      var current = iteratee(array[index]);
      if (current !== undefined) {
        result = result === undefined ? current : (result + current);
      }
    }
    return result;
  }

  /**
   * The base implementation of `_.times` without support for iteratee shorthands
   * or max array length checks.
   *
   * @private
   * @param {number} n The number of times to invoke `iteratee`.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns the array of results.
   */
  function baseTimes(n, iteratee) {
    var index = -1,
        result = Array(n);

    while (++index < n) {
      result[index] = iteratee(index);
    }
    return result;
  }

  /**
   * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
   * of key-value pairs for `object` corresponding to the property names of `props`.
   *
   * @private
   * @param {Object} object The object to query.
   * @param {Array} props The property names to get values for.
   * @returns {Object} Returns the key-value pairs.
   */
  function baseToPairs(object, props) {
    return arrayMap(props, function(key) {
      return [key, object[key]];
    });
  }

  /**
   * The base implementation of `_.trim`.
   *
   * @private
   * @param {string} string The string to trim.
   * @returns {string} Returns the trimmed string.
   */
  function baseTrim(string) {
    return string
      ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')
      : string;
  }

  /**
   * The base implementation of `_.unary` without support for storing metadata.
   *
   * @private
   * @param {Function} func The function to cap arguments for.
   * @returns {Function} Returns the new capped function.
   */
  function baseUnary(func) {
    return function(value) {
      return func(value);
    };
  }

  /**
   * The base implementation of `_.values` and `_.valuesIn` which creates an
   * array of `object` property values corresponding to the property names
   * of `props`.
   *
   * @private
   * @param {Object} object The object to query.
   * @param {Array} props The property names to get values for.
   * @returns {Object} Returns the array of property values.
   */
  function baseValues(object, props) {
    return arrayMap(props, function(key) {
      return object[key];
    });
  }

  /**
   * Checks if a `cache` value for `key` exists.
   *
   * @private
   * @param {Object} cache The cache to query.
   * @param {string} key The key of the entry to check.
   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
   */
  function cacheHas(cache, key) {
    return cache.has(key);
  }

  /**
   * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
   * that is not found in the character symbols.
   *
   * @private
   * @param {Array} strSymbols The string symbols to inspect.
   * @param {Array} chrSymbols The character symbols to find.
   * @returns {number} Returns the index of the first unmatched string symbol.
   */
  function charsStartIndex(strSymbols, chrSymbols) {
    var index = -1,
        length = strSymbols.length;

    while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
    return index;
  }

  /**
   * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
   * that is not found in the character symbols.
   *
   * @private
   * @param {Array} strSymbols The string symbols to inspect.
   * @param {Array} chrSymbols The character symbols to find.
   * @returns {number} Returns the index of the last unmatched string symbol.
   */
  function charsEndIndex(strSymbols, chrSymbols) {
    var index = strSymbols.length;

    while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
    return index;
  }

  /**
   * Gets the number of `placeholder` occurrences in `array`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} placeholder The placeholder to search for.
   * @returns {number} Returns the placeholder count.
   */
  function countHolders(array, placeholder) {
    var length = array.length,
        result = 0;

    while (length--) {
      if (array[length] === placeholder) {
        ++result;
      }
    }
    return result;
  }

  /**
   * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
   * letters to basic Latin letters.
   *
   * @private
   * @param {string} letter The matched letter to deburr.
   * @returns {string} Returns the deburred letter.
   */
  var deburrLetter = basePropertyOf(deburredLetters);

  /**
   * Used by `_.escape` to convert characters to HTML entities.
   *
   * @private
   * @param {string} chr The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  var escapeHtmlChar = basePropertyOf(htmlEscapes);

  /**
   * Used by `_.template` to escape characters for inclusion in compiled string literals.
   *
   * @private
   * @param {string} chr The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  function escapeStringChar(chr) {
    return '\\' + stringEscapes[chr];
  }

  /**
   * Gets the value at `key` of `object`.
   *
   * @private
   * @param {Object} [object] The object to query.
   * @param {string} key The key of the property to get.
   * @returns {*} Returns the property value.
   */
  function getValue(object, key) {
    return object == null ? undefined : object[key];
  }

  /**
   * Checks if `string` contains Unicode symbols.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {boolean} Returns `true` if a symbol is found, else `false`.
   */
  function hasUnicode(string) {
    return reHasUnicode.test(string);
  }

  /**
   * Checks if `string` contains a word composed of Unicode symbols.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {boolean} Returns `true` if a word is found, else `false`.
   */
  function hasUnicodeWord(string) {
    return reHasUnicodeWord.test(string);
  }

  /**
   * Converts `iterator` to an array.
   *
   * @private
   * @param {Object} iterator The iterator to convert.
   * @returns {Array} Returns the converted array.
   */
  function iteratorToArray(iterator) {
    var data,
        result = [];

    while (!(data = iterator.next()).done) {
      result.push(data.value);
    }
    return result;
  }

  /**
   * Converts `map` to its key-value pairs.
   *
   * @private
   * @param {Object} map The map to convert.
   * @returns {Array} Returns the key-value pairs.
   */
  function mapToArray(map) {
    var index = -1,
        result = Array(map.size);

    map.forEach(function(value, key) {
      result[++index] = [key, value];
    });
    return result;
  }

  /**
   * Creates a unary function that invokes `func` with its argument transformed.
   *
   * @private
   * @param {Function} func The function to wrap.
   * @param {Function} transform The argument transform.
   * @returns {Function} Returns the new function.
   */
  function overArg(func, transform) {
    return function(arg) {
      return func(transform(arg));
    };
  }

  /**
   * Replaces all `placeholder` elements in `array` with an internal placeholder
   * and returns an array of their indexes.
   *
   * @private
   * @param {Array} array The array to modify.
   * @param {*} placeholder The placeholder to replace.
   * @returns {Array} Returns the new array of placeholder indexes.
   */
  function replaceHolders(array, placeholder) {
    var index = -1,
        length = array.length,
        resIndex = 0,
        result = [];

    while (++index < length) {
      var value = array[index];
      if (value === placeholder || value === PLACEHOLDER) {
        array[index] = PLACEHOLDER;
        result[resIndex++] = index;
      }
    }
    return result;
  }

  /**
   * Converts `set` to an array of its values.
   *
   * @private
   * @param {Object} set The set to convert.
   * @returns {Array} Returns the values.
   */
  function setToArray(set) {
    var index = -1,
        result = Array(set.size);

    set.forEach(function(value) {
      result[++index] = value;
    });
    return result;
  }

  /**
   * Converts `set` to its value-value pairs.
   *
   * @private
   * @param {Object} set The set to convert.
   * @returns {Array} Returns the value-value pairs.
   */
  function setToPairs(set) {
    var index = -1,
        result = Array(set.size);

    set.forEach(function(value) {
      result[++index] = [value, value];
    });
    return result;
  }

  /**
   * A specialized version of `_.indexOf` which performs strict equality
   * comparisons of values, i.e. `===`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function strictIndexOf(array, value, fromIndex) {
    var index = fromIndex - 1,
        length = array.length;

    while (++index < length) {
      if (array[index] === value) {
        return index;
      }
    }
    return -1;
  }

  /**
   * A specialized version of `_.lastIndexOf` which performs strict equality
   * comparisons of values, i.e. `===`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function strictLastIndexOf(array, value, fromIndex) {
    var index = fromIndex + 1;
    while (index--) {
      if (array[index] === value) {
        return index;
      }
    }
    return index;
  }

  /**
   * Gets the number of symbols in `string`.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {number} Returns the string size.
   */
  function stringSize(string) {
    return hasUnicode(string)
      ? unicodeSize(string)
      : asciiSize(string);
  }

  /**
   * Converts `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function stringToArray(string) {
    return hasUnicode(string)
      ? unicodeToArray(string)
      : asciiToArray(string);
  }

  /**
   * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace
   * character of `string`.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {number} Returns the index of the last non-whitespace character.
   */
  function trimmedEndIndex(string) {
    var index = string.length;

    while (index-- && reWhitespace.test(string.charAt(index))) {}
    return index;
  }

  /**
   * Used by `_.unescape` to convert HTML entities to characters.
   *
   * @private
   * @param {string} chr The matched character to unescape.
   * @returns {string} Returns the unescaped character.
   */
  var unescapeHtmlChar = basePropertyOf(htmlUnescapes);

  /**
   * Gets the size of a Unicode `string`.
   *
   * @private
   * @param {string} string The string inspect.
   * @returns {number} Returns the string size.
   */
  function unicodeSize(string) {
    var result = reUnicode.lastIndex = 0;
    while (reUnicode.test(string)) {
      ++result;
    }
    return result;
  }

  /**
   * Converts a Unicode `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function unicodeToArray(string) {
    return string.match(reUnicode) || [];
  }

  /**
   * Splits a Unicode `string` into an array of its words.
   *
   * @private
   * @param {string} The string to inspect.
   * @returns {Array} Returns the words of `string`.
   */
  function unicodeWords(string) {
    return string.match(reUnicodeWord) || [];
  }

  /*--------------------------------------------------------------------------*/

  /**
   * Create a new pristine `lodash` function using the `context` object.
   *
   * @static
   * @memberOf _
   * @since 1.1.0
   * @category Util
   * @param {Object} [context=root] The context object.
   * @returns {Function} Returns a new `lodash` function.
   * @example
   *
   * _.mixin({ 'foo': _.constant('foo') });
   *
   * var lodash = _.runInContext();
   * lodash.mixin({ 'bar': lodash.constant('bar') });
   *
   * _.isFunction(_.foo);
   * // => true
   * _.isFunction(_.bar);
   * // => false
   *
   * lodash.isFunction(lodash.foo);
   * // => false
   * lodash.isFunction(lodash.bar);
   * // => true
   *
   * // Create a suped-up `defer` in Node.js.
   * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
   */
  var runInContext = (function runInContext(context) {
    context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));

    /** Built-in constructor references. */
    var Array = context.Array,
        Date = context.Date,
        Error = context.Error,
        Function = context.Function,
        Math = context.Math,
        Object = context.Object,
        RegExp = context.RegExp,
        String = context.String,
        TypeError = context.TypeError;

    /** Used for built-in method references. */
    var arrayProto = Array.prototype,
        funcProto = Function.prototype,
        objectProto = Object.prototype;

    /** Used to detect overreaching core-js shims. */
    var coreJsData = context['__core-js_shared__'];

    /** Used to resolve the decompiled source of functions. */
    var funcToString = funcProto.toString;

    /** Used to check objects for own properties. */
    var hasOwnProperty = objectProto.hasOwnProperty;

    /** Used to generate unique IDs. */
    var idCounter = 0;

    /** Used to detect methods masquerading as native. */
    var maskSrcKey = (function() {
      var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
      return uid ? ('Symbol(src)_1.' + uid) : '';
    }());

    /**
     * Used to resolve the
     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
     * of values.
     */
    var nativeObjectToString = objectProto.toString;

    /** Used to infer the `Object` constructor. */
    var objectCtorString = funcToString.call(Object);

    /** Used to restore the original `_` reference in `_.noConflict`. */
    var oldDash = root._;

    /** Used to detect if a method is native. */
    var reIsNative = RegExp('^' +
      funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
      .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
    );

    /** Built-in value references. */
    var Buffer = moduleExports ? context.Buffer : undefined,
        Symbol = context.Symbol,
        Uint8Array = context.Uint8Array,
        allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,
        getPrototype = overArg(Object.getPrototypeOf, Object),
        objectCreate = Object.create,
        propertyIsEnumerable = objectProto.propertyIsEnumerable,
        splice = arrayProto.splice,
        spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,
        symIterator = Symbol ? Symbol.iterator : undefined,
        symToStringTag = Symbol ? Symbol.toStringTag : undefined;

    var defineProperty = (function() {
      try {
        var func = getNative(Object, 'defineProperty');
        func({}, '', {});
        return func;
      } catch (e) {}
    }());

    /** Mocked built-ins. */
    var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,
        ctxNow = Date && Date.now !== root.Date.now && Date.now,
        ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;

    /* Built-in method references for those with the same name as other `lodash` methods. */
    var nativeCeil = Math.ceil,
        nativeFloor = Math.floor,
        nativeGetSymbols = Object.getOwnPropertySymbols,
        nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
        nativeIsFinite = context.isFinite,
        nativeJoin = arrayProto.join,
        nativeKeys = overArg(Object.keys, Object),
        nativeMax = Math.max,
        nativeMin = Math.min,
        nativeNow = Date.now,
        nativeParseInt = context.parseInt,
        nativeRandom = Math.random,
        nativeReverse = arrayProto.reverse;

    /* Built-in method references that are verified to be native. */
    var DataView = getNative(context, 'DataView'),
        Map = getNative(context, 'Map'),
        Promise = getNative(context, 'Promise'),
        Set = getNative(context, 'Set'),
        WeakMap = getNative(context, 'WeakMap'),
        nativeCreate = getNative(Object, 'create');

    /** Used to store function metadata. */
    var metaMap = WeakMap && new WeakMap;

    /** Used to lookup unminified function names. */
    var realNames = {};

    /** Used to detect maps, sets, and weakmaps. */
    var dataViewCtorString = toSource(DataView),
        mapCtorString = toSource(Map),
        promiseCtorString = toSource(Promise),
        setCtorString = toSource(Set),
        weakMapCtorString = toSource(WeakMap);

    /** Used to convert symbols to primitives and strings. */
    var symbolProto = Symbol ? Symbol.prototype : undefined,
        symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,
        symbolToString = symbolProto ? symbolProto.toString : undefined;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` object which wraps `value` to enable implicit method
     * chain sequences. Methods that operate on and return arrays, collections,
     * and functions can be chained together. Methods that retrieve a single value
     * or may return a primitive value will automatically end the chain sequence
     * and return the unwrapped value. Otherwise, the value must be unwrapped
     * with `_#value`.
     *
     * Explicit chain sequences, which must be unwrapped with `_#value`, may be
     * enabled using `_.chain`.
     *
     * The execution of chained methods is lazy, that is, it's deferred until
     * `_#value` is implicitly or explicitly called.
     *
     * Lazy evaluation allows several methods to support shortcut fusion.
     * Shortcut fusion is an optimization to merge iteratee calls; this avoids
     * the creation of intermediate arrays and can greatly reduce the number of
     * iteratee executions. Sections of a chain sequence qualify for shortcut
     * fusion if the section is applied to an array and iteratees accept only
     * one argument. The heuristic for whether a section qualifies for shortcut
     * fusion is subject to change.
     *
     * Chaining is supported in custom builds as long as the `_#value` method is
     * directly or indirectly included in the build.
     *
     * In addition to lodash methods, wrappers have `Array` and `String` methods.
     *
     * The wrapper `Array` methods are:
     * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
     *
     * The wrapper `String` methods are:
     * `replace` and `split`
     *
     * The wrapper methods that support shortcut fusion are:
     * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
     * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
     * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
     *
     * The chainable wrapper methods are:
     * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
     * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
     * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
     * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
     * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
     * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
     * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
     * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
     * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
     * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
     * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
     * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
     * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
     * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
     * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
     * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
     * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
     * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
     * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
     * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
     * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
     * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
     * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
     * `zipObject`, `zipObjectDeep`, and `zipWith`
     *
     * The wrapper methods that are **not** chainable by default are:
     * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
     * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
     * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
     * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
     * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
     * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
     * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
     * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
     * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
     * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
     * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
     * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
     * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
     * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
     * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
     * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
     * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
     * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
     * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
     * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
     * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
     * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
     * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
     * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
     * `upperFirst`, `value`, and `words`
     *
     * @name _
     * @constructor
     * @category Seq
     * @param {*} value The value to wrap in a `lodash` instance.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var wrapped = _([1, 2, 3]);
     *
     * // Returns an unwrapped value.
     * wrapped.reduce(_.add);
     * // => 6
     *
     * // Returns a wrapped value.
     * var squares = wrapped.map(square);
     *
     * _.isArray(squares);
     * // => false
     *
     * _.isArray(squares.value());
     * // => true
     */
    function lodash(value) {
      if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
        if (value instanceof LodashWrapper) {
          return value;
        }
        if (hasOwnProperty.call(value, '__wrapped__')) {
          return wrapperClone(value);
        }
      }
      return new LodashWrapper(value);
    }

    /**
     * The base implementation of `_.create` without support for assigning
     * properties to the created object.
     *
     * @private
     * @param {Object} proto The object to inherit from.
     * @returns {Object} Returns the new object.
     */
    var baseCreate = (function() {
      function object() {}
      return function(proto) {
        if (!isObject(proto)) {
          return {};
        }
        if (objectCreate) {
          return objectCreate(proto);
        }
        object.prototype = proto;
        var result = new object;
        object.prototype = undefined;
        return result;
      };
    }());

    /**
     * The function whose prototype chain sequence wrappers inherit from.
     *
     * @private
     */
    function baseLodash() {
      // No operation performed.
    }

    /**
     * The base constructor for creating `lodash` wrapper objects.
     *
     * @private
     * @param {*} value The value to wrap.
     * @param {boolean} [chainAll] Enable explicit method chain sequences.
     */
    function LodashWrapper(value, chainAll) {
      this.__wrapped__ = value;
      this.__actions__ = [];
      this.__chain__ = !!chainAll;
      this.__index__ = 0;
      this.__values__ = undefined;
    }

    /**
     * By default, the template delimiters used by lodash are like those in
     * embedded Ruby (ERB) as well as ES2015 template strings. Change the
     * following template settings to use alternative delimiters.
     *
     * @static
     * @memberOf _
     * @type {Object}
     */
    lodash.templateSettings = {

      /**
       * Used to detect `data` property values to be HTML-escaped.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'escape': reEscape,

      /**
       * Used to detect code to be evaluated.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'evaluate': reEvaluate,

      /**
       * Used to detect `data` property values to inject.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'interpolate': reInterpolate,

      /**
       * Used to reference the data object in the template text.
       *
       * @memberOf _.templateSettings
       * @type {string}
       */
      'variable': '',

      /**
       * Used to import variables into the compiled template.
       *
       * @memberOf _.templateSettings
       * @type {Object}
       */
      'imports': {

        /**
         * A reference to the `lodash` function.
         *
         * @memberOf _.templateSettings.imports
         * @type {Function}
         */
        '_': lodash
      }
    };

    // Ensure wrappers are instances of `baseLodash`.
    lodash.prototype = baseLodash.prototype;
    lodash.prototype.constructor = lodash;

    LodashWrapper.prototype = baseCreate(baseLodash.prototype);
    LodashWrapper.prototype.constructor = LodashWrapper;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
     *
     * @private
     * @constructor
     * @param {*} value The value to wrap.
     */
    function LazyWrapper(value) {
      this.__wrapped__ = value;
      this.__actions__ = [];
      this.__dir__ = 1;
      this.__filtered__ = false;
      this.__iteratees__ = [];
      this.__takeCount__ = MAX_ARRAY_LENGTH;
      this.__views__ = [];
    }

    /**
     * Creates a clone of the lazy wrapper object.
     *
     * @private
     * @name clone
     * @memberOf LazyWrapper
     * @returns {Object} Returns the cloned `LazyWrapper` object.
     */
    function lazyClone() {
      var result = new LazyWrapper(this.__wrapped__);
      result.__actions__ = copyArray(this.__actions__);
      result.__dir__ = this.__dir__;
      result.__filtered__ = this.__filtered__;
      result.__iteratees__ = copyArray(this.__iteratees__);
      result.__takeCount__ = this.__takeCount__;
      result.__views__ = copyArray(this.__views__);
      return result;
    }

    /**
     * Reverses the direction of lazy iteration.
     *
     * @private
     * @name reverse
     * @memberOf LazyWrapper
     * @returns {Object} Returns the new reversed `LazyWrapper` object.
     */
    function lazyReverse() {
      if (this.__filtered__) {
        var result = new LazyWrapper(this);
        result.__dir__ = -1;
        result.__filtered__ = true;
      } else {
        result = this.clone();
        result.__dir__ *= -1;
      }
      return result;
    }

    /**
     * Extracts the unwrapped value from its lazy wrapper.
     *
     * @private
     * @name value
     * @memberOf LazyWrapper
     * @returns {*} Returns the unwrapped value.
     */
    function lazyValue() {
      var array = this.__wrapped__.value(),
          dir = this.__dir__,
          isArr = isArray(array),
          isRight = dir < 0,
          arrLength = isArr ? array.length : 0,
          view = getView(0, arrLength, this.__views__),
          start = view.start,
          end = view.end,
          length = end - start,
          index = isRight ? end : (start - 1),
          iteratees = this.__iteratees__,
          iterLength = iteratees.length,
          resIndex = 0,
          takeCount = nativeMin(length, this.__takeCount__);

      if (!isArr || (!isRight && arrLength == length && takeCount == length)) {
        return baseWrapperValue(array, this.__actions__);
      }
      var result = [];

      outer:
      while (length-- && resIndex < takeCount) {
        index += dir;

        var iterIndex = -1,
            value = array[index];

        while (++iterIndex < iterLength) {
          var data = iteratees[iterIndex],
              iteratee = data.iteratee,
              type = data.type,
              computed = iteratee(value);

          if (type == LAZY_MAP_FLAG) {
            value = computed;
          } else if (!computed) {
            if (type == LAZY_FILTER_FLAG) {
              continue outer;
            } else {
              break outer;
            }
          }
        }
        result[resIndex++] = value;
      }
      return result;
    }

    // Ensure `LazyWrapper` is an instance of `baseLodash`.
    LazyWrapper.prototype = baseCreate(baseLodash.prototype);
    LazyWrapper.prototype.constructor = LazyWrapper;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a hash object.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function Hash(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the hash.
     *
     * @private
     * @name clear
     * @memberOf Hash
     */
    function hashClear() {
      this.__data__ = nativeCreate ? nativeCreate(null) : {};
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the hash.
     *
     * @private
     * @name delete
     * @memberOf Hash
     * @param {Object} hash The hash to modify.
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function hashDelete(key) {
      var result = this.has(key) && delete this.__data__[key];
      this.size -= result ? 1 : 0;
      return result;
    }

    /**
     * Gets the hash value for `key`.
     *
     * @private
     * @name get
     * @memberOf Hash
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function hashGet(key) {
      var data = this.__data__;
      if (nativeCreate) {
        var result = data[key];
        return result === HASH_UNDEFINED ? undefined : result;
      }
      return hasOwnProperty.call(data, key) ? data[key] : undefined;
    }

    /**
     * Checks if a hash value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf Hash
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function hashHas(key) {
      var data = this.__data__;
      return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
    }

    /**
     * Sets the hash `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf Hash
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the hash instance.
     */
    function hashSet(key, value) {
      var data = this.__data__;
      this.size += this.has(key) ? 0 : 1;
      data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
      return this;
    }

    // Add methods to `Hash`.
    Hash.prototype.clear = hashClear;
    Hash.prototype['delete'] = hashDelete;
    Hash.prototype.get = hashGet;
    Hash.prototype.has = hashHas;
    Hash.prototype.set = hashSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates an list cache object.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function ListCache(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the list cache.
     *
     * @private
     * @name clear
     * @memberOf ListCache
     */
    function listCacheClear() {
      this.__data__ = [];
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the list cache.
     *
     * @private
     * @name delete
     * @memberOf ListCache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function listCacheDelete(key) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      if (index < 0) {
        return false;
      }
      var lastIndex = data.length - 1;
      if (index == lastIndex) {
        data.pop();
      } else {
        splice.call(data, index, 1);
      }
      --this.size;
      return true;
    }

    /**
     * Gets the list cache value for `key`.
     *
     * @private
     * @name get
     * @memberOf ListCache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function listCacheGet(key) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      return index < 0 ? undefined : data[index][1];
    }

    /**
     * Checks if a list cache value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf ListCache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function listCacheHas(key) {
      return assocIndexOf(this.__data__, key) > -1;
    }

    /**
     * Sets the list cache `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf ListCache
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the list cache instance.
     */
    function listCacheSet(key, value) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      if (index < 0) {
        ++this.size;
        data.push([key, value]);
      } else {
        data[index][1] = value;
      }
      return this;
    }

    // Add methods to `ListCache`.
    ListCache.prototype.clear = listCacheClear;
    ListCache.prototype['delete'] = listCacheDelete;
    ListCache.prototype.get = listCacheGet;
    ListCache.prototype.has = listCacheHas;
    ListCache.prototype.set = listCacheSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a map cache object to store key-value pairs.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function MapCache(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the map.
     *
     * @private
     * @name clear
     * @memberOf MapCache
     */
    function mapCacheClear() {
      this.size = 0;
      this.__data__ = {
        'hash': new Hash,
        'map': new (Map || ListCache),
        'string': new Hash
      };
    }

    /**
     * Removes `key` and its value from the map.
     *
     * @private
     * @name delete
     * @memberOf MapCache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function mapCacheDelete(key) {
      var result = getMapData(this, key)['delete'](key);
      this.size -= result ? 1 : 0;
      return result;
    }

    /**
     * Gets the map value for `key`.
     *
     * @private
     * @name get
     * @memberOf MapCache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function mapCacheGet(key) {
      return getMapData(this, key).get(key);
    }

    /**
     * Checks if a map value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf MapCache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function mapCacheHas(key) {
      return getMapData(this, key).has(key);
    }

    /**
     * Sets the map `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf MapCache
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the map cache instance.
     */
    function mapCacheSet(key, value) {
      var data = getMapData(this, key),
          size = data.size;

      data.set(key, value);
      this.size += data.size == size ? 0 : 1;
      return this;
    }

    // Add methods to `MapCache`.
    MapCache.prototype.clear = mapCacheClear;
    MapCache.prototype['delete'] = mapCacheDelete;
    MapCache.prototype.get = mapCacheGet;
    MapCache.prototype.has = mapCacheHas;
    MapCache.prototype.set = mapCacheSet;

    /*------------------------------------------------------------------------*/

    /**
     *
     * Creates an array cache object to store unique values.
     *
     * @private
     * @constructor
     * @param {Array} [values] The values to cache.
     */
    function SetCache(values) {
      var index = -1,
          length = values == null ? 0 : values.length;

      this.__data__ = new MapCache;
      while (++index < length) {
        this.add(values[index]);
      }
    }

    /**
     * Adds `value` to the array cache.
     *
     * @private
     * @name add
     * @memberOf SetCache
     * @alias push
     * @param {*} value The value to cache.
     * @returns {Object} Returns the cache instance.
     */
    function setCacheAdd(value) {
      this.__data__.set(value, HASH_UNDEFINED);
      return this;
    }

    /**
     * Checks if `value` is in the array cache.
     *
     * @private
     * @name has
     * @memberOf SetCache
     * @param {*} value The value to search for.
     * @returns {number} Returns `true` if `value` is found, else `false`.
     */
    function setCacheHas(value) {
      return this.__data__.has(value);
    }

    // Add methods to `SetCache`.
    SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
    SetCache.prototype.has = setCacheHas;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a stack cache object to store key-value pairs.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function Stack(entries) {
      var data = this.__data__ = new ListCache(entries);
      this.size = data.size;
    }

    /**
     * Removes all key-value entries from the stack.
     *
     * @private
     * @name clear
     * @memberOf Stack
     */
    function stackClear() {
      this.__data__ = new ListCache;
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the stack.
     *
     * @private
     * @name delete
     * @memberOf Stack
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function stackDelete(key) {
      var data = this.__data__,
          result = data['delete'](key);

      this.size = data.size;
      return result;
    }

    /**
     * Gets the stack value for `key`.
     *
     * @private
     * @name get
     * @memberOf Stack
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function stackGet(key) {
      return this.__data__.get(key);
    }

    /**
     * Checks if a stack value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf Stack
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function stackHas(key) {
      return this.__data__.has(key);
    }

    /**
     * Sets the stack `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf Stack
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the stack cache instance.
     */
    function stackSet(key, value) {
      var data = this.__data__;
      if (data instanceof ListCache) {
        var pairs = data.__data__;
        if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
          pairs.push([key, value]);
          this.size = ++data.size;
          return this;
        }
        data = this.__data__ = new MapCache(pairs);
      }
      data.set(key, value);
      this.size = data.size;
      return this;
    }

    // Add methods to `Stack`.
    Stack.prototype.clear = stackClear;
    Stack.prototype['delete'] = stackDelete;
    Stack.prototype.get = stackGet;
    Stack.prototype.has = stackHas;
    Stack.prototype.set = stackSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates an array of the enumerable property names of the array-like `value`.
     *
     * @private
     * @param {*} value The value to query.
     * @param {boolean} inherited Specify returning inherited property names.
     * @returns {Array} Returns the array of property names.
     */
    function arrayLikeKeys(value, inherited) {
      var isArr = isArray(value),
          isArg = !isArr && isArguments(value),
          isBuff = !isArr && !isArg && isBuffer(value),
          isType = !isArr && !isArg && !isBuff && isTypedArray(value),
          skipIndexes = isArr || isArg || isBuff || isType,
          result = skipIndexes ? baseTimes(value.length, String) : [],
          length = result.length;

      for (var key in value) {
        if ((inherited || hasOwnProperty.call(value, key)) &&
            !(skipIndexes && (
               // Safari 9 has enumerable `arguments.length` in strict mode.
               key == 'length' ||
               // Node.js 0.10 has enumerable non-index properties on buffers.
               (isBuff && (key == 'offset' || key == 'parent')) ||
               // PhantomJS 2 has enumerable non-index properties on typed arrays.
               (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
               // Skip index properties.
               isIndex(key, length)
            ))) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * A specialized version of `_.sample` for arrays.
     *
     * @private
     * @param {Array} array The array to sample.
     * @returns {*} Returns the random element.
     */
    function arraySample(array) {
      var length = array.length;
      return length ? array[baseRandom(0, length - 1)] : undefined;
    }

    /**
     * A specialized version of `_.sampleSize` for arrays.
     *
     * @private
     * @param {Array} array The array to sample.
     * @param {number} n The number of elements to sample.
     * @returns {Array} Returns the random elements.
     */
    function arraySampleSize(array, n) {
      return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
    }

    /**
     * A specialized version of `_.shuffle` for arrays.
     *
     * @private
     * @param {Array} array The array to shuffle.
     * @returns {Array} Returns the new shuffled array.
     */
    function arrayShuffle(array) {
      return shuffleSelf(copyArray(array));
    }

    /**
     * This function is like `assignValue` except that it doesn't assign
     * `undefined` values.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function assignMergeValue(object, key, value) {
      if ((value !== undefined && !eq(object[key], value)) ||
          (value === undefined && !(key in object))) {
        baseAssignValue(object, key, value);
      }
    }

    /**
     * Assigns `value` to `key` of `object` if the existing value is not equivalent
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function assignValue(object, key, value) {
      var objValue = object[key];
      if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
          (value === undefined && !(key in object))) {
        baseAssignValue(object, key, value);
      }
    }

    /**
     * Gets the index at which the `key` is found in `array` of key-value pairs.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {*} key The key to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function assocIndexOf(array, key) {
      var length = array.length;
      while (length--) {
        if (eq(array[length][0], key)) {
          return length;
        }
      }
      return -1;
    }

    /**
     * Aggregates elements of `collection` on `accumulator` with keys transformed
     * by `iteratee` and values set by `setter`.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} setter The function to set `accumulator` values.
     * @param {Function} iteratee The iteratee to transform keys.
     * @param {Object} accumulator The initial aggregated object.
     * @returns {Function} Returns `accumulator`.
     */
    function baseAggregator(collection, setter, iteratee, accumulator) {
      baseEach(collection, function(value, key, collection) {
        setter(accumulator, value, iteratee(value), collection);
      });
      return accumulator;
    }

    /**
     * The base implementation of `_.assign` without support for multiple sources
     * or `customizer` functions.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @returns {Object} Returns `object`.
     */
    function baseAssign(object, source) {
      return object && copyObject(source, keys(source), object);
    }

    /**
     * The base implementation of `_.assignIn` without support for multiple sources
     * or `customizer` functions.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @returns {Object} Returns `object`.
     */
    function baseAssignIn(object, source) {
      return object && copyObject(source, keysIn(source), object);
    }

    /**
     * The base implementation of `assignValue` and `assignMergeValue` without
     * value checks.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function baseAssignValue(object, key, value) {
      if (key == '__proto__' && defineProperty) {
        defineProperty(object, key, {
          'configurable': true,
          'enumerable': true,
          'value': value,
          'writable': true
        });
      } else {
        object[key] = value;
      }
    }

    /**
     * The base implementation of `_.at` without support for individual paths.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {string[]} paths The property paths to pick.
     * @returns {Array} Returns the picked elements.
     */
    function baseAt(object, paths) {
      var index = -1,
          length = paths.length,
          result = Array(length),
          skip = object == null;

      while (++index < length) {
        result[index] = skip ? undefined : get(object, paths[index]);
      }
      return result;
    }

    /**
     * The base implementation of `_.clamp` which doesn't coerce arguments.
     *
     * @private
     * @param {number} number The number to clamp.
     * @param {number} [lower] The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the clamped number.
     */
    function baseClamp(number, lower, upper) {
      if (number === number) {
        if (upper !== undefined) {
          number = number <= upper ? number : upper;
        }
        if (lower !== undefined) {
          number = number >= lower ? number : lower;
        }
      }
      return number;
    }

    /**
     * The base implementation of `_.clone` and `_.cloneDeep` which tracks
     * traversed objects.
     *
     * @private
     * @param {*} value The value to clone.
     * @param {boolean} bitmask The bitmask flags.
     *  1 - Deep clone
     *  2 - Flatten inherited properties
     *  4 - Clone symbols
     * @param {Function} [customizer] The function to customize cloning.
     * @param {string} [key] The key of `value`.
     * @param {Object} [object] The parent object of `value`.
     * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
     * @returns {*} Returns the cloned value.
     */
    function baseClone(value, bitmask, customizer, key, object, stack) {
      var result,
          isDeep = bitmask & CLONE_DEEP_FLAG,
          isFlat = bitmask & CLONE_FLAT_FLAG,
          isFull = bitmask & CLONE_SYMBOLS_FLAG;

      if (customizer) {
        result = object ? customizer(value, key, object, stack) : customizer(value);
      }
      if (result !== undefined) {
        return result;
      }
      if (!isObject(value)) {
        return value;
      }
      var isArr = isArray(value);
      if (isArr) {
        result = initCloneArray(value);
        if (!isDeep) {
          return copyArray(value, result);
        }
      } else {
        var tag = getTag(value),
            isFunc = tag == funcTag || tag == genTag;

        if (isBuffer(value)) {
          return cloneBuffer(value, isDeep);
        }
        if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
          result = (isFlat || isFunc) ? {} : initCloneObject(value);
          if (!isDeep) {
            return isFlat
              ? copySymbolsIn(value, baseAssignIn(result, value))
              : copySymbols(value, baseAssign(result, value));
          }
        } else {
          if (!cloneableTags[tag]) {
            return object ? value : {};
          }
          result = initCloneByTag(value, tag, isDeep);
        }
      }
      // Check for circular references and return its corresponding clone.
      stack || (stack = new Stack);
      var stacked = stack.get(value);
      if (stacked) {
        return stacked;
      }
      stack.set(value, result);

      if (isSet(value)) {
        value.forEach(function(subValue) {
          result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
        });
      } else if (isMap(value)) {
        value.forEach(function(subValue, key) {
          result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
        });
      }

      var keysFunc = isFull
        ? (isFlat ? getAllKeysIn : getAllKeys)
        : (isFlat ? keysIn : keys);

      var props = isArr ? undefined : keysFunc(value);
      arrayEach(props || value, function(subValue, key) {
        if (props) {
          key = subValue;
          subValue = value[key];
        }
        // Recursively populate clone (susceptible to call stack limits).
        assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
      });
      return result;
    }

    /**
     * The base implementation of `_.conforms` which doesn't clone `source`.
     *
     * @private
     * @param {Object} source The object of property predicates to conform to.
     * @returns {Function} Returns the new spec function.
     */
    function baseConforms(source) {
      var props = keys(source);
      return function(object) {
        return baseConformsTo(object, source, props);
      };
    }

    /**
     * The base implementation of `_.conformsTo` which accepts `props` to check.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property predicates to conform to.
     * @returns {boolean} Returns `true` if `object` conforms, else `false`.
     */
    function baseConformsTo(object, source, props) {
      var length = props.length;
      if (object == null) {
        return !length;
      }
      object = Object(object);
      while (length--) {
        var key = props[length],
            predicate = source[key],
            value = object[key];

        if ((value === undefined && !(key in object)) || !predicate(value)) {
          return false;
        }
      }
      return true;
    }

    /**
     * The base implementation of `_.delay` and `_.defer` which accepts `args`
     * to provide to `func`.
     *
     * @private
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @param {Array} args The arguments to provide to `func`.
     * @returns {number|Object} Returns the timer id or timeout object.
     */
    function baseDelay(func, wait, args) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return setTimeout(function() { func.apply(undefined, args); }, wait);
    }

    /**
     * The base implementation of methods like `_.difference` without support
     * for excluding multiple arrays or iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Array} values The values to exclude.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     */
    function baseDifference(array, values, iteratee, comparator) {
      var index = -1,
          includes = arrayIncludes,
          isCommon = true,
          length = array.length,
          result = [],
          valuesLength = values.length;

      if (!length) {
        return result;
      }
      if (iteratee) {
        values = arrayMap(values, baseUnary(iteratee));
      }
      if (comparator) {
        includes = arrayIncludesWith;
        isCommon = false;
      }
      else if (values.length >= LARGE_ARRAY_SIZE) {
        includes = cacheHas;
        isCommon = false;
        values = new SetCache(values);
      }
      outer:
      while (++index < length) {
        var value = array[index],
            computed = iteratee == null ? value : iteratee(value);

        value = (comparator || value !== 0) ? value : 0;
        if (isCommon && computed === computed) {
          var valuesIndex = valuesLength;
          while (valuesIndex--) {
            if (values[valuesIndex] === computed) {
              continue outer;
            }
          }
          result.push(value);
        }
        else if (!includes(values, computed, comparator)) {
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.forEach` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     */
    var baseEach = createBaseEach(baseForOwn);

    /**
     * The base implementation of `_.forEachRight` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     */
    var baseEachRight = createBaseEach(baseForOwnRight, true);

    /**
     * The base implementation of `_.every` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`
     */
    function baseEvery(collection, predicate) {
      var result = true;
      baseEach(collection, function(value, index, collection) {
        result = !!predicate(value, index, collection);
        return result;
      });
      return result;
    }

    /**
     * The base implementation of methods like `_.max` and `_.min` which accepts a
     * `comparator` to determine the extremum value.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The iteratee invoked per iteration.
     * @param {Function} comparator The comparator used to compare values.
     * @returns {*} Returns the extremum value.
     */
    function baseExtremum(array, iteratee, comparator) {
      var index = -1,
          length = array.length;

      while (++index < length) {
        var value = array[index],
            current = iteratee(value);

        if (current != null && (computed === undefined
              ? (current === current && !isSymbol(current))
              : comparator(current, computed)
            )) {
          var computed = current,
              result = value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.fill` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to fill.
     * @param {*} value The value to fill `array` with.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns `array`.
     */
    function baseFill(array, value, start, end) {
      var length = array.length;

      start = toInteger(start);
      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = (end === undefined || end > length) ? length : toInteger(end);
      if (end < 0) {
        end += length;
      }
      end = start > end ? 0 : toLength(end);
      while (start < end) {
        array[start++] = value;
      }
      return array;
    }

    /**
     * The base implementation of `_.filter` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     */
    function baseFilter(collection, predicate) {
      var result = [];
      baseEach(collection, function(value, index, collection) {
        if (predicate(value, index, collection)) {
          result.push(value);
        }
      });
      return result;
    }

    /**
     * The base implementation of `_.flatten` with support for restricting flattening.
     *
     * @private
     * @param {Array} array The array to flatten.
     * @param {number} depth The maximum recursion depth.
     * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
     * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
     * @param {Array} [result=[]] The initial result value.
     * @returns {Array} Returns the new flattened array.
     */
    function baseFlatten(array, depth, predicate, isStrict, result) {
      var index = -1,
          length = array.length;

      predicate || (predicate = isFlattenable);
      result || (result = []);

      while (++index < length) {
        var value = array[index];
        if (depth > 0 && predicate(value)) {
          if (depth > 1) {
            // Recursively flatten arrays (susceptible to call stack limits).
            baseFlatten(value, depth - 1, predicate, isStrict, result);
          } else {
            arrayPush(result, value);
          }
        } else if (!isStrict) {
          result[result.length] = value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `baseForOwn` which iterates over `object`
     * properties returned by `keysFunc` and invokes `iteratee` for each property.
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    var baseFor = createBaseFor();

    /**
     * This function is like `baseFor` except that it iterates over properties
     * in the opposite order.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    var baseForRight = createBaseFor(true);

    /**
     * The base implementation of `_.forOwn` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwn(object, iteratee) {
      return object && baseFor(object, iteratee, keys);
    }

    /**
     * The base implementation of `_.forOwnRight` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwnRight(object, iteratee) {
      return object && baseForRight(object, iteratee, keys);
    }

    /**
     * The base implementation of `_.functions` which creates an array of
     * `object` function property names filtered from `props`.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Array} props The property names to filter.
     * @returns {Array} Returns the function names.
     */
    function baseFunctions(object, props) {
      return arrayFilter(props, function(key) {
        return isFunction(object[key]);
      });
    }

    /**
     * The base implementation of `_.get` without support for default values.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to get.
     * @returns {*} Returns the resolved value.
     */
    function baseGet(object, path) {
      path = castPath(path, object);

      var index = 0,
          length = path.length;

      while (object != null && index < length) {
        object = object[toKey(path[index++])];
      }
      return (index && index == length) ? object : undefined;
    }

    /**
     * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
     * `keysFunc` and `symbolsFunc` to get the enumerable property names and
     * symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @param {Function} symbolsFunc The function to get the symbols of `object`.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function baseGetAllKeys(object, keysFunc, symbolsFunc) {
      var result = keysFunc(object);
      return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
    }

    /**
     * The base implementation of `getTag` without fallbacks for buggy environments.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the `toStringTag`.
     */
    function baseGetTag(value) {
      if (value == null) {
        return value === undefined ? undefinedTag : nullTag;
      }
      return (symToStringTag && symToStringTag in Object(value))
        ? getRawTag(value)
        : objectToString(value);
    }

    /**
     * The base implementation of `_.gt` which doesn't coerce arguments.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than `other`,
     *  else `false`.
     */
    function baseGt(value, other) {
      return value > other;
    }

    /**
     * The base implementation of `_.has` without support for deep paths.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {Array|string} key The key to check.
     * @returns {boolean} Returns `true` if `key` exists, else `false`.
     */
    function baseHas(object, key) {
      return object != null && hasOwnProperty.call(object, key);
    }

    /**
     * The base implementation of `_.hasIn` without support for deep paths.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {Array|string} key The key to check.
     * @returns {boolean} Returns `true` if `key` exists, else `false`.
     */
    function baseHasIn(object, key) {
      return object != null && key in Object(object);
    }

    /**
     * The base implementation of `_.inRange` which doesn't coerce arguments.
     *
     * @private
     * @param {number} number The number to check.
     * @param {number} start The start of the range.
     * @param {number} end The end of the range.
     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
     */
    function baseInRange(number, start, end) {
      return number >= nativeMin(start, end) && number < nativeMax(start, end);
    }

    /**
     * The base implementation of methods like `_.intersection`, without support
     * for iteratee shorthands, that accepts an array of arrays to inspect.
     *
     * @private
     * @param {Array} arrays The arrays to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of shared values.
     */
    function baseIntersection(arrays, iteratee, comparator) {
      var includes = comparator ? arrayIncludesWith : arrayIncludes,
          length = arrays[0].length,
          othLength = arrays.length,
          othIndex = othLength,
          caches = Array(othLength),
          maxLength = Infinity,
          result = [];

      while (othIndex--) {
        var array = arrays[othIndex];
        if (othIndex && iteratee) {
          array = arrayMap(array, baseUnary(iteratee));
        }
        maxLength = nativeMin(array.length, maxLength);
        caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))
          ? new SetCache(othIndex && array)
          : undefined;
      }
      array = arrays[0];

      var index = -1,
          seen = caches[0];

      outer:
      while (++index < length && result.length < maxLength) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        value = (comparator || value !== 0) ? value : 0;
        if (!(seen
              ? cacheHas(seen, computed)
              : includes(result, computed, comparator)
            )) {
          othIndex = othLength;
          while (--othIndex) {
            var cache = caches[othIndex];
            if (!(cache
                  ? cacheHas(cache, computed)
                  : includes(arrays[othIndex], computed, comparator))
                ) {
              continue outer;
            }
          }
          if (seen) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.invert` and `_.invertBy` which inverts
     * `object` with values transformed by `iteratee` and set by `setter`.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} setter The function to set `accumulator` values.
     * @param {Function} iteratee The iteratee to transform values.
     * @param {Object} accumulator The initial inverted object.
     * @returns {Function} Returns `accumulator`.
     */
    function baseInverter(object, setter, iteratee, accumulator) {
      baseForOwn(object, function(value, key, object) {
        setter(accumulator, iteratee(value), key, object);
      });
      return accumulator;
    }

    /**
     * The base implementation of `_.invoke` without support for individual
     * method arguments.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the method to invoke.
     * @param {Array} args The arguments to invoke the method with.
     * @returns {*} Returns the result of the invoked method.
     */
    function baseInvoke(object, path, args) {
      path = castPath(path, object);
      object = parent(object, path);
      var func = object == null ? object : object[toKey(last(path))];
      return func == null ? undefined : apply(func, object, args);
    }

    /**
     * The base implementation of `_.isArguments`.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an `arguments` object,
     */
    function baseIsArguments(value) {
      return isObjectLike(value) && baseGetTag(value) == argsTag;
    }

    /**
     * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
     */
    function baseIsArrayBuffer(value) {
      return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
    }

    /**
     * The base implementation of `_.isDate` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
     */
    function baseIsDate(value) {
      return isObjectLike(value) && baseGetTag(value) == dateTag;
    }

    /**
     * The base implementation of `_.isEqual` which supports partial comparisons
     * and tracks traversed objects.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @param {boolean} bitmask The bitmask flags.
     *  1 - Unordered comparison
     *  2 - Partial comparison
     * @param {Function} [customizer] The function to customize comparisons.
     * @param {Object} [stack] Tracks traversed `value` and `other` objects.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     */
    function baseIsEqual(value, other, bitmask, customizer, stack) {
      if (value === other) {
        return true;
      }
      if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
        return value !== value && other !== other;
      }
      return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
    }

    /**
     * A specialized version of `baseIsEqual` for arrays and objects which performs
     * deep comparisons and tracks traversed objects enabling objects with circular
     * references to be compared.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} [stack] Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
      var objIsArr = isArray(object),
          othIsArr = isArray(other),
          objTag = objIsArr ? arrayTag : getTag(object),
          othTag = othIsArr ? arrayTag : getTag(other);

      objTag = objTag == argsTag ? objectTag : objTag;
      othTag = othTag == argsTag ? objectTag : othTag;

      var objIsObj = objTag == objectTag,
          othIsObj = othTag == objectTag,
          isSameTag = objTag == othTag;

      if (isSameTag && isBuffer(object)) {
        if (!isBuffer(other)) {
          return false;
        }
        objIsArr = true;
        objIsObj = false;
      }
      if (isSameTag && !objIsObj) {
        stack || (stack = new Stack);
        return (objIsArr || isTypedArray(object))
          ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
          : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
      }
      if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
        var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
            othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');

        if (objIsWrapped || othIsWrapped) {
          var objUnwrapped = objIsWrapped ? object.value() : object,
              othUnwrapped = othIsWrapped ? other.value() : other;

          stack || (stack = new Stack);
          return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
        }
      }
      if (!isSameTag) {
        return false;
      }
      stack || (stack = new Stack);
      return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
    }

    /**
     * The base implementation of `_.isMap` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a map, else `false`.
     */
    function baseIsMap(value) {
      return isObjectLike(value) && getTag(value) == mapTag;
    }

    /**
     * The base implementation of `_.isMatch` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @param {Array} matchData The property names, values, and compare flags to match.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     */
    function baseIsMatch(object, source, matchData, customizer) {
      var index = matchData.length,
          length = index,
          noCustomizer = !customizer;

      if (object == null) {
        return !length;
      }
      object = Object(object);
      while (index--) {
        var data = matchData[index];
        if ((noCustomizer && data[2])
              ? data[1] !== object[data[0]]
              : !(data[0] in object)
            ) {
          return false;
        }
      }
      while (++index < length) {
        data = matchData[index];
        var key = data[0],
            objValue = object[key],
            srcValue = data[1];

        if (noCustomizer && data[2]) {
          if (objValue === undefined && !(key in object)) {
            return false;
          }
        } else {
          var stack = new Stack;
          if (customizer) {
            var result = customizer(objValue, srcValue, key, object, source, stack);
          }
          if (!(result === undefined
                ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
                : result
              )) {
            return false;
          }
        }
      }
      return true;
    }

    /**
     * The base implementation of `_.isNative` without bad shim checks.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a native function,
     *  else `false`.
     */
    function baseIsNative(value) {
      if (!isObject(value) || isMasked(value)) {
        return false;
      }
      var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
      return pattern.test(toSource(value));
    }

    /**
     * The base implementation of `_.isRegExp` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
     */
    function baseIsRegExp(value) {
      return isObjectLike(value) && baseGetTag(value) == regexpTag;
    }

    /**
     * The base implementation of `_.isSet` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a set, else `false`.
     */
    function baseIsSet(value) {
      return isObjectLike(value) && getTag(value) == setTag;
    }

    /**
     * The base implementation of `_.isTypedArray` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
     */
    function baseIsTypedArray(value) {
      return isObjectLike(value) &&
        isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
    }

    /**
     * The base implementation of `_.iteratee`.
     *
     * @private
     * @param {*} [value=_.identity] The value to convert to an iteratee.
     * @returns {Function} Returns the iteratee.
     */
    function baseIteratee(value) {
      // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
      // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
      if (typeof value == 'function') {
        return value;
      }
      if (value == null) {
        return identity;
      }
      if (typeof value == 'object') {
        return isArray(value)
          ? baseMatchesProperty(value[0], value[1])
          : baseMatches(value);
      }
      return property(value);
    }

    /**
     * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function baseKeys(object) {
      if (!isPrototype(object)) {
        return nativeKeys(object);
      }
      var result = [];
      for (var key in Object(object)) {
        if (hasOwnProperty.call(object, key) && key != 'constructor') {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function baseKeysIn(object) {
      if (!isObject(object)) {
        return nativeKeysIn(object);
      }
      var isProto = isPrototype(object),
          result = [];

      for (var key in object) {
        if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.lt` which doesn't coerce arguments.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than `other`,
     *  else `false`.
     */
    function baseLt(value, other) {
      return value < other;
    }

    /**
     * The base implementation of `_.map` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     */
    function baseMap(collection, iteratee) {
      var index = -1,
          result = isArrayLike(collection) ? Array(collection.length) : [];

      baseEach(collection, function(value, key, collection) {
        result[++index] = iteratee(value, key, collection);
      });
      return result;
    }

    /**
     * The base implementation of `_.matches` which doesn't clone `source`.
     *
     * @private
     * @param {Object} source The object of property values to match.
     * @returns {Function} Returns the new spec function.
     */
    function baseMatches(source) {
      var matchData = getMatchData(source);
      if (matchData.length == 1 && matchData[0][2]) {
        return matchesStrictComparable(matchData[0][0], matchData[0][1]);
      }
      return function(object) {
        return object === source || baseIsMatch(object, source, matchData);
      };
    }

    /**
     * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
     *
     * @private
     * @param {string} path The path of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     */
    function baseMatchesProperty(path, srcValue) {
      if (isKey(path) && isStrictComparable(srcValue)) {
        return matchesStrictComparable(toKey(path), srcValue);
      }
      return function(object) {
        var objValue = get(object, path);
        return (objValue === undefined && objValue === srcValue)
          ? hasIn(object, path)
          : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
      };
    }

    /**
     * The base implementation of `_.merge` without support for multiple sources.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {number} srcIndex The index of `source`.
     * @param {Function} [customizer] The function to customize merged values.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     */
    function baseMerge(object, source, srcIndex, customizer, stack) {
      if (object === source) {
        return;
      }
      baseFor(source, function(srcValue, key) {
        stack || (stack = new Stack);
        if (isObject(srcValue)) {
          baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
        }
        else {
          var newValue = customizer
            ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
            : undefined;

          if (newValue === undefined) {
            newValue = srcValue;
          }
          assignMergeValue(object, key, newValue);
        }
      }, keysIn);
    }

    /**
     * A specialized version of `baseMerge` for arrays and objects which performs
     * deep merges and tracks traversed objects enabling objects with circular
     * references to be merged.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {string} key The key of the value to merge.
     * @param {number} srcIndex The index of `source`.
     * @param {Function} mergeFunc The function to merge values.
     * @param {Function} [customizer] The function to customize assigned values.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     */
    function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
      var objValue = safeGet(object, key),
          srcValue = safeGet(source, key),
          stacked = stack.get(srcValue);

      if (stacked) {
        assignMergeValue(object, key, stacked);
        return;
      }
      var newValue = customizer
        ? customizer(objValue, srcValue, (key + ''), object, source, stack)
        : undefined;

      var isCommon = newValue === undefined;

      if (isCommon) {
        var isArr = isArray(srcValue),
            isBuff = !isArr && isBuffer(srcValue),
            isTyped = !isArr && !isBuff && isTypedArray(srcValue);

        newValue = srcValue;
        if (isArr || isBuff || isTyped) {
          if (isArray(objValue)) {
            newValue = objValue;
          }
          else if (isArrayLikeObject(objValue)) {
            newValue = copyArray(objValue);
          }
          else if (isBuff) {
            isCommon = false;
            newValue = cloneBuffer(srcValue, true);
          }
          else if (isTyped) {
            isCommon = false;
            newValue = cloneTypedArray(srcValue, true);
          }
          else {
            newValue = [];
          }
        }
        else if (isPlainObject(srcValue) || isArguments(srcValue)) {
          newValue = objValue;
          if (isArguments(objValue)) {
            newValue = toPlainObject(objValue);
          }
          else if (!isObject(objValue) || isFunction(objValue)) {
            newValue = initCloneObject(srcValue);
          }
        }
        else {
          isCommon = false;
        }
      }
      if (isCommon) {
        // Recursively merge objects and arrays (susceptible to call stack limits).
        stack.set(srcValue, newValue);
        mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
        stack['delete'](srcValue);
      }
      assignMergeValue(object, key, newValue);
    }

    /**
     * The base implementation of `_.nth` which doesn't coerce arguments.
     *
     * @private
     * @param {Array} array The array to query.
     * @param {number} n The index of the element to return.
     * @returns {*} Returns the nth element of `array`.
     */
    function baseNth(array, n) {
      var length = array.length;
      if (!length) {
        return;
      }
      n += n < 0 ? length : 0;
      return isIndex(n, length) ? array[n] : undefined;
    }

    /**
     * The base implementation of `_.orderBy` without param guards.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
     * @param {string[]} orders The sort orders of `iteratees`.
     * @returns {Array} Returns the new sorted array.
     */
    function baseOrderBy(collection, iteratees, orders) {
      if (iteratees.length) {
        iteratees = arrayMap(iteratees, function(iteratee) {
          if (isArray(iteratee)) {
            return function(value) {
              return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);
            }
          }
          return iteratee;
        });
      } else {
        iteratees = [identity];
      }

      var index = -1;
      iteratees = arrayMap(iteratees, baseUnary(getIteratee()));

      var result = baseMap(collection, function(value, key, collection) {
        var criteria = arrayMap(iteratees, function(iteratee) {
          return iteratee(value);
        });
        return { 'criteria': criteria, 'index': ++index, 'value': value };
      });

      return baseSortBy(result, function(object, other) {
        return compareMultiple(object, other, orders);
      });
    }

    /**
     * The base implementation of `_.pick` without support for individual
     * property identifiers.
     *
     * @private
     * @param {Object} object The source object.
     * @param {string[]} paths The property paths to pick.
     * @returns {Object} Returns the new object.
     */
    function basePick(object, paths) {
      return basePickBy(object, paths, function(value, path) {
        return hasIn(object, path);
      });
    }

    /**
     * The base implementation of  `_.pickBy` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The source object.
     * @param {string[]} paths The property paths to pick.
     * @param {Function} predicate The function invoked per property.
     * @returns {Object} Returns the new object.
     */
    function basePickBy(object, paths, predicate) {
      var index = -1,
          length = paths.length,
          result = {};

      while (++index < length) {
        var path = paths[index],
            value = baseGet(object, path);

        if (predicate(value, path)) {
          baseSet(result, castPath(path, object), value);
        }
      }
      return result;
    }

    /**
     * A specialized version of `baseProperty` which supports deep paths.
     *
     * @private
     * @param {Array|string} path The path of the property to get.
     * @returns {Function} Returns the new accessor function.
     */
    function basePropertyDeep(path) {
      return function(object) {
        return baseGet(object, path);
      };
    }

    /**
     * The base implementation of `_.pullAllBy` without support for iteratee
     * shorthands.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns `array`.
     */
    function basePullAll(array, values, iteratee, comparator) {
      var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
          index = -1,
          length = values.length,
          seen = array;

      if (array === values) {
        values = copyArray(values);
      }
      if (iteratee) {
        seen = arrayMap(array, baseUnary(iteratee));
      }
      while (++index < length) {
        var fromIndex = 0,
            value = values[index],
            computed = iteratee ? iteratee(value) : value;

        while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
          if (seen !== array) {
            splice.call(seen, fromIndex, 1);
          }
          splice.call(array, fromIndex, 1);
        }
      }
      return array;
    }

    /**
     * The base implementation of `_.pullAt` without support for individual
     * indexes or capturing the removed elements.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {number[]} indexes The indexes of elements to remove.
     * @returns {Array} Returns `array`.
     */
    function basePullAt(array, indexes) {
      var length = array ? indexes.length : 0,
          lastIndex = length - 1;

      while (length--) {
        var index = indexes[length];
        if (length == lastIndex || index !== previous) {
          var previous = index;
          if (isIndex(index)) {
            splice.call(array, index, 1);
          } else {
            baseUnset(array, index);
          }
        }
      }
      return array;
    }

    /**
     * The base implementation of `_.random` without support for returning
     * floating-point numbers.
     *
     * @private
     * @param {number} lower The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the random number.
     */
    function baseRandom(lower, upper) {
      return lower + nativeFloor(nativeRandom() * (upper - lower + 1));
    }

    /**
     * The base implementation of `_.range` and `_.rangeRight` which doesn't
     * coerce arguments.
     *
     * @private
     * @param {number} start The start of the range.
     * @param {number} end The end of the range.
     * @param {number} step The value to increment or decrement by.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Array} Returns the range of numbers.
     */
    function baseRange(start, end, step, fromRight) {
      var index = -1,
          length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
          result = Array(length);

      while (length--) {
        result[fromRight ? length : ++index] = start;
        start += step;
      }
      return result;
    }

    /**
     * The base implementation of `_.repeat` which doesn't coerce arguments.
     *
     * @private
     * @param {string} string The string to repeat.
     * @param {number} n The number of times to repeat the string.
     * @returns {string} Returns the repeated string.
     */
    function baseRepeat(string, n) {
      var result = '';
      if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
        return result;
      }
      // Leverage the exponentiation by squaring algorithm for a faster repeat.
      // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
      do {
        if (n % 2) {
          result += string;
        }
        n = nativeFloor(n / 2);
        if (n) {
          string += string;
        }
      } while (n);

      return result;
    }

    /**
     * The base implementation of `_.rest` which doesn't validate or coerce arguments.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @returns {Function} Returns the new function.
     */
    function baseRest(func, start) {
      return setToString(overRest(func, start, identity), func + '');
    }

    /**
     * The base implementation of `_.sample`.
     *
     * @private
     * @param {Array|Object} collection The collection to sample.
     * @returns {*} Returns the random element.
     */
    function baseSample(collection) {
      return arraySample(values(collection));
    }

    /**
     * The base implementation of `_.sampleSize` without param guards.
     *
     * @private
     * @param {Array|Object} collection The collection to sample.
     * @param {number} n The number of elements to sample.
     * @returns {Array} Returns the random elements.
     */
    function baseSampleSize(collection, n) {
      var array = values(collection);
      return shuffleSelf(array, baseClamp(n, 0, array.length));
    }

    /**
     * The base implementation of `_.set`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @param {Function} [customizer] The function to customize path creation.
     * @returns {Object} Returns `object`.
     */
    function baseSet(object, path, value, customizer) {
      if (!isObject(object)) {
        return object;
      }
      path = castPath(path, object);

      var index = -1,
          length = path.length,
          lastIndex = length - 1,
          nested = object;

      while (nested != null && ++index < length) {
        var key = toKey(path[index]),
            newValue = value;

        if (key === '__proto__' || key === 'constructor' || key === 'prototype') {
          return object;
        }

        if (index != lastIndex) {
          var objValue = nested[key];
          newValue = customizer ? customizer(objValue, key, nested) : undefined;
          if (newValue === undefined) {
            newValue = isObject(objValue)
              ? objValue
              : (isIndex(path[index + 1]) ? [] : {});
          }
        }
        assignValue(nested, key, newValue);
        nested = nested[key];
      }
      return object;
    }

    /**
     * The base implementation of `setData` without support for hot loop shorting.
     *
     * @private
     * @param {Function} func The function to associate metadata with.
     * @param {*} data The metadata.
     * @returns {Function} Returns `func`.
     */
    var baseSetData = !metaMap ? identity : function(func, data) {
      metaMap.set(func, data);
      return func;
    };

    /**
     * The base implementation of `setToString` without support for hot loop shorting.
     *
     * @private
     * @param {Function} func The function to modify.
     * @param {Function} string The `toString` result.
     * @returns {Function} Returns `func`.
     */
    var baseSetToString = !defineProperty ? identity : function(func, string) {
      return defineProperty(func, 'toString', {
        'configurable': true,
        'enumerable': false,
        'value': constant(string),
        'writable': true
      });
    };

    /**
     * The base implementation of `_.shuffle`.
     *
     * @private
     * @param {Array|Object} collection The collection to shuffle.
     * @returns {Array} Returns the new shuffled array.
     */
    function baseShuffle(collection) {
      return shuffleSelf(values(collection));
    }

    /**
     * The base implementation of `_.slice` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function baseSlice(array, start, end) {
      var index = -1,
          length = array.length;

      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = end > length ? length : end;
      if (end < 0) {
        end += length;
      }
      length = start > end ? 0 : ((end - start) >>> 0);
      start >>>= 0;

      var result = Array(length);
      while (++index < length) {
        result[index] = array[index + start];
      }
      return result;
    }

    /**
     * The base implementation of `_.some` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     */
    function baseSome(collection, predicate) {
      var result;

      baseEach(collection, function(value, index, collection) {
        result = predicate(value, index, collection);
        return !result;
      });
      return !!result;
    }

    /**
     * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
     * performs a binary search of `array` to determine the index at which `value`
     * should be inserted into `array` in order to maintain its sort order.
     *
     * @private
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {boolean} [retHighest] Specify returning the highest qualified index.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     */
    function baseSortedIndex(array, value, retHighest) {
      var low = 0,
          high = array == null ? low : array.length;

      if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
        while (low < high) {
          var mid = (low + high) >>> 1,
              computed = array[mid];

          if (computed !== null && !isSymbol(computed) &&
              (retHighest ? (computed <= value) : (computed < value))) {
            low = mid + 1;
          } else {
            high = mid;
          }
        }
        return high;
      }
      return baseSortedIndexBy(array, value, identity, retHighest);
    }

    /**
     * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
     * which invokes `iteratee` for `value` and each element of `array` to compute
     * their sort ranking. The iteratee is invoked with one argument; (value).
     *
     * @private
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} iteratee The iteratee invoked per element.
     * @param {boolean} [retHighest] Specify returning the highest qualified index.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     */
    function baseSortedIndexBy(array, value, iteratee, retHighest) {
      var low = 0,
          high = array == null ? 0 : array.length;
      if (high === 0) {
        return 0;
      }

      value = iteratee(value);
      var valIsNaN = value !== value,
          valIsNull = value === null,
          valIsSymbol = isSymbol(value),
          valIsUndefined = value === undefined;

      while (low < high) {
        var mid = nativeFloor((low + high) / 2),
            computed = iteratee(array[mid]),
            othIsDefined = computed !== undefined,
            othIsNull = computed === null,
            othIsReflexive = computed === computed,
            othIsSymbol = isSymbol(computed);

        if (valIsNaN) {
          var setLow = retHighest || othIsReflexive;
        } else if (valIsUndefined) {
          setLow = othIsReflexive && (retHighest || othIsDefined);
        } else if (valIsNull) {
          setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
        } else if (valIsSymbol) {
          setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
        } else if (othIsNull || othIsSymbol) {
          setLow = false;
        } else {
          setLow = retHighest ? (computed <= value) : (computed < value);
        }
        if (setLow) {
          low = mid + 1;
        } else {
          high = mid;
        }
      }
      return nativeMin(high, MAX_ARRAY_INDEX);
    }

    /**
     * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
     * support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     */
    function baseSortedUniq(array, iteratee) {
      var index = -1,
          length = array.length,
          resIndex = 0,
          result = [];

      while (++index < length) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        if (!index || !eq(computed, seen)) {
          var seen = computed;
          result[resIndex++] = value === 0 ? 0 : value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.toNumber` which doesn't ensure correct
     * conversions of binary, hexadecimal, or octal string values.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {number} Returns the number.
     */
    function baseToNumber(value) {
      if (typeof value == 'number') {
        return value;
      }
      if (isSymbol(value)) {
        return NAN;
      }
      return +value;
    }

    /**
     * The base implementation of `_.toString` which doesn't convert nullish
     * values to empty strings.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {string} Returns the string.
     */
    function baseToString(value) {
      // Exit early for strings to avoid a performance hit in some environments.
      if (typeof value == 'string') {
        return value;
      }
      if (isArray(value)) {
        // Recursively convert values (susceptible to call stack limits).
        return arrayMap(value, baseToString) + '';
      }
      if (isSymbol(value)) {
        return symbolToString ? symbolToString.call(value) : '';
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
    }

    /**
     * The base implementation of `_.uniqBy` without support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     */
    function baseUniq(array, iteratee, comparator) {
      var index = -1,
          includes = arrayIncludes,
          length = array.length,
          isCommon = true,
          result = [],
          seen = result;

      if (comparator) {
        isCommon = false;
        includes = arrayIncludesWith;
      }
      else if (length >= LARGE_ARRAY_SIZE) {
        var set = iteratee ? null : createSet(array);
        if (set) {
          return setToArray(set);
        }
        isCommon = false;
        includes = cacheHas;
        seen = new SetCache;
      }
      else {
        seen = iteratee ? [] : result;
      }
      outer:
      while (++index < length) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        value = (comparator || value !== 0) ? value : 0;
        if (isCommon && computed === computed) {
          var seenIndex = seen.length;
          while (seenIndex--) {
            if (seen[seenIndex] === computed) {
              continue outer;
            }
          }
          if (iteratee) {
            seen.push(computed);
          }
          result.push(value);
        }
        else if (!includes(seen, computed, comparator)) {
          if (seen !== result) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.unset`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The property path to unset.
     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
     */
    function baseUnset(object, path) {
      path = castPath(path, object);
      object = parent(object, path);
      return object == null || delete object[toKey(last(path))];
    }

    /**
     * The base implementation of `_.update`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to update.
     * @param {Function} updater The function to produce the updated value.
     * @param {Function} [customizer] The function to customize path creation.
     * @returns {Object} Returns `object`.
     */
    function baseUpdate(object, path, updater, customizer) {
      return baseSet(object, path, updater(baseGet(object, path)), customizer);
    }

    /**
     * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
     * without support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to query.
     * @param {Function} predicate The function invoked per iteration.
     * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Array} Returns the slice of `array`.
     */
    function baseWhile(array, predicate, isDrop, fromRight) {
      var length = array.length,
          index = fromRight ? length : -1;

      while ((fromRight ? index-- : ++index < length) &&
        predicate(array[index], index, array)) {}

      return isDrop
        ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
        : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
    }

    /**
     * The base implementation of `wrapperValue` which returns the result of
     * performing a sequence of actions on the unwrapped `value`, where each
     * successive action is supplied the return value of the previous.
     *
     * @private
     * @param {*} value The unwrapped value.
     * @param {Array} actions Actions to perform to resolve the unwrapped value.
     * @returns {*} Returns the resolved value.
     */
    function baseWrapperValue(value, actions) {
      var result = value;
      if (result instanceof LazyWrapper) {
        result = result.value();
      }
      return arrayReduce(actions, function(result, action) {
        return action.func.apply(action.thisArg, arrayPush([result], action.args));
      }, result);
    }

    /**
     * The base implementation of methods like `_.xor`, without support for
     * iteratee shorthands, that accepts an array of arrays to inspect.
     *
     * @private
     * @param {Array} arrays The arrays to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of values.
     */
    function baseXor(arrays, iteratee, comparator) {
      var length = arrays.length;
      if (length < 2) {
        return length ? baseUniq(arrays[0]) : [];
      }
      var index = -1,
          result = Array(length);

      while (++index < length) {
        var array = arrays[index],
            othIndex = -1;

        while (++othIndex < length) {
          if (othIndex != index) {
            result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
          }
        }
      }
      return baseUniq(baseFlatten(result, 1), iteratee, comparator);
    }

    /**
     * This base implementation of `_.zipObject` which assigns values using `assignFunc`.
     *
     * @private
     * @param {Array} props The property identifiers.
     * @param {Array} values The property values.
     * @param {Function} assignFunc The function to assign values.
     * @returns {Object} Returns the new object.
     */
    function baseZipObject(props, values, assignFunc) {
      var index = -1,
          length = props.length,
          valsLength = values.length,
          result = {};

      while (++index < length) {
        var value = index < valsLength ? values[index] : undefined;
        assignFunc(result, props[index], value);
      }
      return result;
    }

    /**
     * Casts `value` to an empty array if it's not an array like object.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {Array|Object} Returns the cast array-like object.
     */
    function castArrayLikeObject(value) {
      return isArrayLikeObject(value) ? value : [];
    }

    /**
     * Casts `value` to `identity` if it's not a function.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {Function} Returns cast function.
     */
    function castFunction(value) {
      return typeof value == 'function' ? value : identity;
    }

    /**
     * Casts `value` to a path array if it's not one.
     *
     * @private
     * @param {*} value The value to inspect.
     * @param {Object} [object] The object to query keys on.
     * @returns {Array} Returns the cast property path array.
     */
    function castPath(value, object) {
      if (isArray(value)) {
        return value;
      }
      return isKey(value, object) ? [value] : stringToPath(toString(value));
    }

    /**
     * A `baseRest` alias which can be replaced with `identity` by module
     * replacement plugins.
     *
     * @private
     * @type {Function}
     * @param {Function} func The function to apply a rest parameter to.
     * @returns {Function} Returns the new function.
     */
    var castRest = baseRest;

    /**
     * Casts `array` to a slice if it's needed.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {number} start The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the cast slice.
     */
    function castSlice(array, start, end) {
      var length = array.length;
      end = end === undefined ? length : end;
      return (!start && end >= length) ? array : baseSlice(array, start, end);
    }

    /**
     * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).
     *
     * @private
     * @param {number|Object} id The timer id or timeout object of the timer to clear.
     */
    var clearTimeout = ctxClearTimeout || function(id) {
      return root.clearTimeout(id);
    };

    /**
     * Creates a clone of  `buffer`.
     *
     * @private
     * @param {Buffer} buffer The buffer to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Buffer} Returns the cloned buffer.
     */
    function cloneBuffer(buffer, isDeep) {
      if (isDeep) {
        return buffer.slice();
      }
      var length = buffer.length,
          result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);

      buffer.copy(result);
      return result;
    }

    /**
     * Creates a clone of `arrayBuffer`.
     *
     * @private
     * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
     * @returns {ArrayBuffer} Returns the cloned array buffer.
     */
    function cloneArrayBuffer(arrayBuffer) {
      var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
      new Uint8Array(result).set(new Uint8Array(arrayBuffer));
      return result;
    }

    /**
     * Creates a clone of `dataView`.
     *
     * @private
     * @param {Object} dataView The data view to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the cloned data view.
     */
    function cloneDataView(dataView, isDeep) {
      var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
      return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
    }

    /**
     * Creates a clone of `regexp`.
     *
     * @private
     * @param {Object} regexp The regexp to clone.
     * @returns {Object} Returns the cloned regexp.
     */
    function cloneRegExp(regexp) {
      var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
      result.lastIndex = regexp.lastIndex;
      return result;
    }

    /**
     * Creates a clone of the `symbol` object.
     *
     * @private
     * @param {Object} symbol The symbol object to clone.
     * @returns {Object} Returns the cloned symbol object.
     */
    function cloneSymbol(symbol) {
      return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
    }

    /**
     * Creates a clone of `typedArray`.
     *
     * @private
     * @param {Object} typedArray The typed array to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the cloned typed array.
     */
    function cloneTypedArray(typedArray, isDeep) {
      var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
      return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
    }

    /**
     * Compares values to sort them in ascending order.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {number} Returns the sort order indicator for `value`.
     */
    function compareAscending(value, other) {
      if (value !== other) {
        var valIsDefined = value !== undefined,
            valIsNull = value === null,
            valIsReflexive = value === value,
            valIsSymbol = isSymbol(value);

        var othIsDefined = other !== undefined,
            othIsNull = other === null,
            othIsReflexive = other === other,
            othIsSymbol = isSymbol(other);

        if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
            (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
            (valIsNull && othIsDefined && othIsReflexive) ||
            (!valIsDefined && othIsReflexive) ||
            !valIsReflexive) {
          return 1;
        }
        if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
            (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
            (othIsNull && valIsDefined && valIsReflexive) ||
            (!othIsDefined && valIsReflexive) ||
            !othIsReflexive) {
          return -1;
        }
      }
      return 0;
    }

    /**
     * Used by `_.orderBy` to compare multiple properties of a value to another
     * and stable sort them.
     *
     * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
     * specify an order of "desc" for descending or "asc" for ascending sort order
     * of corresponding values.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {boolean[]|string[]} orders The order to sort by for each property.
     * @returns {number} Returns the sort order indicator for `object`.
     */
    function compareMultiple(object, other, orders) {
      var index = -1,
          objCriteria = object.criteria,
          othCriteria = other.criteria,
          length = objCriteria.length,
          ordersLength = orders.length;

      while (++index < length) {
        var result = compareAscending(objCriteria[index], othCriteria[index]);
        if (result) {
          if (index >= ordersLength) {
            return result;
          }
          var order = orders[index];
          return result * (order == 'desc' ? -1 : 1);
        }
      }
      // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
      // that causes it, under certain circumstances, to provide the same value for
      // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
      // for more details.
      //
      // This also ensures a stable sort in V8 and other engines.
      // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
      return object.index - other.index;
    }

    /**
     * Creates an array that is the composition of partially applied arguments,
     * placeholders, and provided arguments into a single array of arguments.
     *
     * @private
     * @param {Array} args The provided arguments.
     * @param {Array} partials The arguments to prepend to those provided.
     * @param {Array} holders The `partials` placeholder indexes.
     * @params {boolean} [isCurried] Specify composing for a curried function.
     * @returns {Array} Returns the new array of composed arguments.
     */
    function composeArgs(args, partials, holders, isCurried) {
      var argsIndex = -1,
          argsLength = args.length,
          holdersLength = holders.length,
          leftIndex = -1,
          leftLength = partials.length,
          rangeLength = nativeMax(argsLength - holdersLength, 0),
          result = Array(leftLength + rangeLength),
          isUncurried = !isCurried;

      while (++leftIndex < leftLength) {
        result[leftIndex] = partials[leftIndex];
      }
      while (++argsIndex < holdersLength) {
        if (isUncurried || argsIndex < argsLength) {
          result[holders[argsIndex]] = args[argsIndex];
        }
      }
      while (rangeLength--) {
        result[leftIndex++] = args[argsIndex++];
      }
      return result;
    }

    /**
     * This function is like `composeArgs` except that the arguments composition
     * is tailored for `_.partialRight`.
     *
     * @private
     * @param {Array} args The provided arguments.
     * @param {Array} partials The arguments to append to those provided.
     * @param {Array} holders The `partials` placeholder indexes.
     * @params {boolean} [isCurried] Specify composing for a curried function.
     * @returns {Array} Returns the new array of composed arguments.
     */
    function composeArgsRight(args, partials, holders, isCurried) {
      var argsIndex = -1,
          argsLength = args.length,
          holdersIndex = -1,
          holdersLength = holders.length,
          rightIndex = -1,
          rightLength = partials.length,
          rangeLength = nativeMax(argsLength - holdersLength, 0),
          result = Array(rangeLength + rightLength),
          isUncurried = !isCurried;

      while (++argsIndex < rangeLength) {
        result[argsIndex] = args[argsIndex];
      }
      var offset = argsIndex;
      while (++rightIndex < rightLength) {
        result[offset + rightIndex] = partials[rightIndex];
      }
      while (++holdersIndex < holdersLength) {
        if (isUncurried || argsIndex < argsLength) {
          result[offset + holders[holdersIndex]] = args[argsIndex++];
        }
      }
      return result;
    }

    /**
     * Copies the values of `source` to `array`.
     *
     * @private
     * @param {Array} source The array to copy values from.
     * @param {Array} [array=[]] The array to copy values to.
     * @returns {Array} Returns `array`.
     */
    function copyArray(source, array) {
      var index = -1,
          length = source.length;

      array || (array = Array(length));
      while (++index < length) {
        array[index] = source[index];
      }
      return array;
    }

    /**
     * Copies properties of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy properties from.
     * @param {Array} props The property identifiers to copy.
     * @param {Object} [object={}] The object to copy properties to.
     * @param {Function} [customizer] The function to customize copied values.
     * @returns {Object} Returns `object`.
     */
    function copyObject(source, props, object, customizer) {
      var isNew = !object;
      object || (object = {});

      var index = -1,
          length = props.length;

      while (++index < length) {
        var key = props[index];

        var newValue = customizer
          ? customizer(object[key], source[key], key, object, source)
          : undefined;

        if (newValue === undefined) {
          newValue = source[key];
        }
        if (isNew) {
          baseAssignValue(object, key, newValue);
        } else {
          assignValue(object, key, newValue);
        }
      }
      return object;
    }

    /**
     * Copies own symbols of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy symbols from.
     * @param {Object} [object={}] The object to copy symbols to.
     * @returns {Object} Returns `object`.
     */
    function copySymbols(source, object) {
      return copyObject(source, getSymbols(source), object);
    }

    /**
     * Copies own and inherited symbols of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy symbols from.
     * @param {Object} [object={}] The object to copy symbols to.
     * @returns {Object} Returns `object`.
     */
    function copySymbolsIn(source, object) {
      return copyObject(source, getSymbolsIn(source), object);
    }

    /**
     * Creates a function like `_.groupBy`.
     *
     * @private
     * @param {Function} setter The function to set accumulator values.
     * @param {Function} [initializer] The accumulator object initializer.
     * @returns {Function} Returns the new aggregator function.
     */
    function createAggregator(setter, initializer) {
      return function(collection, iteratee) {
        var func = isArray(collection) ? arrayAggregator : baseAggregator,
            accumulator = initializer ? initializer() : {};

        return func(collection, setter, getIteratee(iteratee, 2), accumulator);
      };
    }

    /**
     * Creates a function like `_.assign`.
     *
     * @private
     * @param {Function} assigner The function to assign values.
     * @returns {Function} Returns the new assigner function.
     */
    function createAssigner(assigner) {
      return baseRest(function(object, sources) {
        var index = -1,
            length = sources.length,
            customizer = length > 1 ? sources[length - 1] : undefined,
            guard = length > 2 ? sources[2] : undefined;

        customizer = (assigner.length > 3 && typeof customizer == 'function')
          ? (length--, customizer)
          : undefined;

        if (guard && isIterateeCall(sources[0], sources[1], guard)) {
          customizer = length < 3 ? undefined : customizer;
          length = 1;
        }
        object = Object(object);
        while (++index < length) {
          var source = sources[index];
          if (source) {
            assigner(object, source, index, customizer);
          }
        }
        return object;
      });
    }

    /**
     * Creates a `baseEach` or `baseEachRight` function.
     *
     * @private
     * @param {Function} eachFunc The function to iterate over a collection.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new base function.
     */
    function createBaseEach(eachFunc, fromRight) {
      return function(collection, iteratee) {
        if (collection == null) {
          return collection;
        }
        if (!isArrayLike(collection)) {
          return eachFunc(collection, iteratee);
        }
        var length = collection.length,
            index = fromRight ? length : -1,
            iterable = Object(collection);

        while ((fromRight ? index-- : ++index < length)) {
          if (iteratee(iterable[index], index, iterable) === false) {
            break;
          }
        }
        return collection;
      };
    }

    /**
     * Creates a base function for methods like `_.forIn` and `_.forOwn`.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new base function.
     */
    function createBaseFor(fromRight) {
      return function(object, iteratee, keysFunc) {
        var index = -1,
            iterable = Object(object),
            props = keysFunc(object),
            length = props.length;

        while (length--) {
          var key = props[fromRight ? length : ++index];
          if (iteratee(iterable[key], key, iterable) === false) {
            break;
          }
        }
        return object;
      };
    }

    /**
     * Creates a function that wraps `func` to invoke it with the optional `this`
     * binding of `thisArg`.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createBind(func, bitmask, thisArg) {
      var isBind = bitmask & WRAP_BIND_FLAG,
          Ctor = createCtor(func);

      function wrapper() {
        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
        return fn.apply(isBind ? thisArg : this, arguments);
      }
      return wrapper;
    }

    /**
     * Creates a function like `_.lowerFirst`.
     *
     * @private
     * @param {string} methodName The name of the `String` case method to use.
     * @returns {Function} Returns the new case function.
     */
    function createCaseFirst(methodName) {
      return function(string) {
        string = toString(string);

        var strSymbols = hasUnicode(string)
          ? stringToArray(string)
          : undefined;

        var chr = strSymbols
          ? strSymbols[0]
          : string.charAt(0);

        var trailing = strSymbols
          ? castSlice(strSymbols, 1).join('')
          : string.slice(1);

        return chr[methodName]() + trailing;
      };
    }

    /**
     * Creates a function like `_.camelCase`.
     *
     * @private
     * @param {Function} callback The function to combine each word.
     * @returns {Function} Returns the new compounder function.
     */
    function createCompounder(callback) {
      return function(string) {
        return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
      };
    }

    /**
     * Creates a function that produces an instance of `Ctor` regardless of
     * whether it was invoked as part of a `new` expression or by `call` or `apply`.
     *
     * @private
     * @param {Function} Ctor The constructor to wrap.
     * @returns {Function} Returns the new wrapped function.
     */
    function createCtor(Ctor) {
      return function() {
        // Use a `switch` statement to work with class constructors. See
        // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
        // for more details.
        var args = arguments;
        switch (args.length) {
          case 0: return new Ctor;
          case 1: return new Ctor(args[0]);
          case 2: return new Ctor(args[0], args[1]);
          case 3: return new Ctor(args[0], args[1], args[2]);
          case 4: return new Ctor(args[0], args[1], args[2], args[3]);
          case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);
          case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
          case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
        }
        var thisBinding = baseCreate(Ctor.prototype),
            result = Ctor.apply(thisBinding, args);

        // Mimic the constructor's `return` behavior.
        // See https://es5.github.io/#x13.2.2 for more details.
        return isObject(result) ? result : thisBinding;
      };
    }

    /**
     * Creates a function that wraps `func` to enable currying.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {number} arity The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createCurry(func, bitmask, arity) {
      var Ctor = createCtor(func);

      function wrapper() {
        var length = arguments.length,
            args = Array(length),
            index = length,
            placeholder = getHolder(wrapper);

        while (index--) {
          args[index] = arguments[index];
        }
        var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
          ? []
          : replaceHolders(args, placeholder);

        length -= holders.length;
        if (length < arity) {
          return createRecurry(
            func, bitmask, createHybrid, wrapper.placeholder, undefined,
            args, holders, undefined, undefined, arity - length);
        }
        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
        return apply(fn, this, args);
      }
      return wrapper;
    }

    /**
     * Creates a `_.find` or `_.findLast` function.
     *
     * @private
     * @param {Function} findIndexFunc The function to find the collection index.
     * @returns {Function} Returns the new find function.
     */
    function createFind(findIndexFunc) {
      return function(collection, predicate, fromIndex) {
        var iterable = Object(collection);
        if (!isArrayLike(collection)) {
          var iteratee = getIteratee(predicate, 3);
          collection = keys(collection);
          predicate = function(key) { return iteratee(iterable[key], key, iterable); };
        }
        var index = findIndexFunc(collection, predicate, fromIndex);
        return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;
      };
    }

    /**
     * Creates a `_.flow` or `_.flowRight` function.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new flow function.
     */
    function createFlow(fromRight) {
      return flatRest(function(funcs) {
        var length = funcs.length,
            index = length,
            prereq = LodashWrapper.prototype.thru;

        if (fromRight) {
          funcs.reverse();
        }
        while (index--) {
          var func = funcs[index];
          if (typeof func != 'function') {
            throw new TypeError(FUNC_ERROR_TEXT);
          }
          if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
            var wrapper = new LodashWrapper([], true);
          }
        }
        index = wrapper ? index : length;
        while (++index < length) {
          func = funcs[index];

          var funcName = getFuncName(func),
              data = funcName == 'wrapper' ? getData(func) : undefined;

          if (data && isLaziable(data[0]) &&
                data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
                !data[4].length && data[9] == 1
              ) {
            wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
          } else {
            wrapper = (func.length == 1 && isLaziable(func))
              ? wrapper[funcName]()
              : wrapper.thru(func);
          }
        }
        return function() {
          var args = arguments,
              value = args[0];

          if (wrapper && args.length == 1 && isArray(value)) {
            return wrapper.plant(value).value();
          }
          var index = 0,
              result = length ? funcs[index].apply(this, args) : value;

          while (++index < length) {
            result = funcs[index].call(this, result);
          }
          return result;
        };
      });
    }

    /**
     * Creates a function that wraps `func` to invoke it with optional `this`
     * binding of `thisArg`, partial application, and currying.
     *
     * @private
     * @param {Function|string} func The function or method name to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to prepend to those provided to
     *  the new function.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [partialsRight] The arguments to append to those provided
     *  to the new function.
     * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
      var isAry = bitmask & WRAP_ARY_FLAG,
          isBind = bitmask & WRAP_BIND_FLAG,
          isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
          isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
          isFlip = bitmask & WRAP_FLIP_FLAG,
          Ctor = isBindKey ? undefined : createCtor(func);

      function wrapper() {
        var length = arguments.length,
            args = Array(length),
            index = length;

        while (index--) {
          args[index] = arguments[index];
        }
        if (isCurried) {
          var placeholder = getHolder(wrapper),
              holdersCount = countHolders(args, placeholder);
        }
        if (partials) {
          args = composeArgs(args, partials, holders, isCurried);
        }
        if (partialsRight) {
          args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
        }
        length -= holdersCount;
        if (isCurried && length < arity) {
          var newHolders = replaceHolders(args, placeholder);
          return createRecurry(
            func, bitmask, createHybrid, wrapper.placeholder, thisArg,
            args, newHolders, argPos, ary, arity - length
          );
        }
        var thisBinding = isBind ? thisArg : this,
            fn = isBindKey ? thisBinding[func] : func;

        length = args.length;
        if (argPos) {
          args = reorder(args, argPos);
        } else if (isFlip && length > 1) {
          args.reverse();
        }
        if (isAry && ary < length) {
          args.length = ary;
        }
        if (this && this !== root && this instanceof wrapper) {
          fn = Ctor || createCtor(fn);
        }
        return fn.apply(thisBinding, args);
      }
      return wrapper;
    }

    /**
     * Creates a function like `_.invertBy`.
     *
     * @private
     * @param {Function} setter The function to set accumulator values.
     * @param {Function} toIteratee The function to resolve iteratees.
     * @returns {Function} Returns the new inverter function.
     */
    function createInverter(setter, toIteratee) {
      return function(object, iteratee) {
        return baseInverter(object, setter, toIteratee(iteratee), {});
      };
    }

    /**
     * Creates a function that performs a mathematical operation on two values.
     *
     * @private
     * @param {Function} operator The function to perform the operation.
     * @param {number} [defaultValue] The value used for `undefined` arguments.
     * @returns {Function} Returns the new mathematical operation function.
     */
    function createMathOperation(operator, defaultValue) {
      return function(value, other) {
        var result;
        if (value === undefined && other === undefined) {
          return defaultValue;
        }
        if (value !== undefined) {
          result = value;
        }
        if (other !== undefined) {
          if (result === undefined) {
            return other;
          }
          if (typeof value == 'string' || typeof other == 'string') {
            value = baseToString(value);
            other = baseToString(other);
          } else {
            value = baseToNumber(value);
            other = baseToNumber(other);
          }
          result = operator(value, other);
        }
        return result;
      };
    }

    /**
     * Creates a function like `_.over`.
     *
     * @private
     * @param {Function} arrayFunc The function to iterate over iteratees.
     * @returns {Function} Returns the new over function.
     */
    function createOver(arrayFunc) {
      return flatRest(function(iteratees) {
        iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
        return baseRest(function(args) {
          var thisArg = this;
          return arrayFunc(iteratees, function(iteratee) {
            return apply(iteratee, thisArg, args);
          });
        });
      });
    }

    /**
     * Creates the padding for `string` based on `length`. The `chars` string
     * is truncated if the number of characters exceeds `length`.
     *
     * @private
     * @param {number} length The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padding for `string`.
     */
    function createPadding(length, chars) {
      chars = chars === undefined ? ' ' : baseToString(chars);

      var charsLength = chars.length;
      if (charsLength < 2) {
        return charsLength ? baseRepeat(chars, length) : chars;
      }
      var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
      return hasUnicode(chars)
        ? castSlice(stringToArray(result), 0, length).join('')
        : result.slice(0, length);
    }

    /**
     * Creates a function that wraps `func` to invoke it with the `this` binding
     * of `thisArg` and `partials` prepended to the arguments it receives.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {Array} partials The arguments to prepend to those provided to
     *  the new function.
     * @returns {Function} Returns the new wrapped function.
     */
    function createPartial(func, bitmask, thisArg, partials) {
      var isBind = bitmask & WRAP_BIND_FLAG,
          Ctor = createCtor(func);

      function wrapper() {
        var argsIndex = -1,
            argsLength = arguments.length,
            leftIndex = -1,
            leftLength = partials.length,
            args = Array(leftLength + argsLength),
            fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;

        while (++leftIndex < leftLength) {
          args[leftIndex] = partials[leftIndex];
        }
        while (argsLength--) {
          args[leftIndex++] = arguments[++argsIndex];
        }
        return apply(fn, isBind ? thisArg : this, args);
      }
      return wrapper;
    }

    /**
     * Creates a `_.range` or `_.rangeRight` function.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new range function.
     */
    function createRange(fromRight) {
      return function(start, end, step) {
        if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
          end = step = undefined;
        }
        // Ensure the sign of `-0` is preserved.
        start = toFinite(start);
        if (end === undefined) {
          end = start;
          start = 0;
        } else {
          end = toFinite(end);
        }
        step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
        return baseRange(start, end, step, fromRight);
      };
    }

    /**
     * Creates a function that performs a relational operation on two values.
     *
     * @private
     * @param {Function} operator The function to perform the operation.
     * @returns {Function} Returns the new relational operation function.
     */
    function createRelationalOperation(operator) {
      return function(value, other) {
        if (!(typeof value == 'string' && typeof other == 'string')) {
          value = toNumber(value);
          other = toNumber(other);
        }
        return operator(value, other);
      };
    }

    /**
     * Creates a function that wraps `func` to continue currying.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {Function} wrapFunc The function to create the `func` wrapper.
     * @param {*} placeholder The placeholder value.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to prepend to those provided to
     *  the new function.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
      var isCurry = bitmask & WRAP_CURRY_FLAG,
          newHolders = isCurry ? holders : undefined,
          newHoldersRight = isCurry ? undefined : holders,
          newPartials = isCurry ? partials : undefined,
          newPartialsRight = isCurry ? undefined : partials;

      bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);
      bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);

      if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
        bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
      }
      var newData = [
        func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
        newHoldersRight, argPos, ary, arity
      ];

      var result = wrapFunc.apply(undefined, newData);
      if (isLaziable(func)) {
        setData(result, newData);
      }
      result.placeholder = placeholder;
      return setWrapToString(result, func, bitmask);
    }

    /**
     * Creates a function like `_.round`.
     *
     * @private
     * @param {string} methodName The name of the `Math` method to use when rounding.
     * @returns {Function} Returns the new round function.
     */
    function createRound(methodName) {
      var func = Math[methodName];
      return function(number, precision) {
        number = toNumber(number);
        precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
        if (precision && nativeIsFinite(number)) {
          // Shift with exponential notation to avoid floating-point issues.
          // See [MDN](https://mdn.io/round#Examples) for more details.
          var pair = (toString(number) + 'e').split('e'),
              value = func(pair[0] + 'e' + (+pair[1] + precision));

          pair = (toString(value) + 'e').split('e');
          return +(pair[0] + 'e' + (+pair[1] - precision));
        }
        return func(number);
      };
    }

    /**
     * Creates a set object of `values`.
     *
     * @private
     * @param {Array} values The values to add to the set.
     * @returns {Object} Returns the new set.
     */
    var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {
      return new Set(values);
    };

    /**
     * Creates a `_.toPairs` or `_.toPairsIn` function.
     *
     * @private
     * @param {Function} keysFunc The function to get the keys of a given object.
     * @returns {Function} Returns the new pairs function.
     */
    function createToPairs(keysFunc) {
      return function(object) {
        var tag = getTag(object);
        if (tag == mapTag) {
          return mapToArray(object);
        }
        if (tag == setTag) {
          return setToPairs(object);
        }
        return baseToPairs(object, keysFunc(object));
      };
    }

    /**
     * Creates a function that either curries or invokes `func` with optional
     * `this` binding and partially applied arguments.
     *
     * @private
     * @param {Function|string} func The function or method name to wrap.
     * @param {number} bitmask The bitmask flags.
     *    1 - `_.bind`
     *    2 - `_.bindKey`
     *    4 - `_.curry` or `_.curryRight` of a bound function
     *    8 - `_.curry`
     *   16 - `_.curryRight`
     *   32 - `_.partial`
     *   64 - `_.partialRight`
     *  128 - `_.rearg`
     *  256 - `_.ary`
     *  512 - `_.flip`
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to be partially applied.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
      var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
      if (!isBindKey && typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var length = partials ? partials.length : 0;
      if (!length) {
        bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
        partials = holders = undefined;
      }
      ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
      arity = arity === undefined ? arity : toInteger(arity);
      length -= holders ? holders.length : 0;

      if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
        var partialsRight = partials,
            holdersRight = holders;

        partials = holders = undefined;
      }
      var data = isBindKey ? undefined : getData(func);

      var newData = [
        func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
        argPos, ary, arity
      ];

      if (data) {
        mergeData(newData, data);
      }
      func = newData[0];
      bitmask = newData[1];
      thisArg = newData[2];
      partials = newData[3];
      holders = newData[4];
      arity = newData[9] = newData[9] === undefined
        ? (isBindKey ? 0 : func.length)
        : nativeMax(newData[9] - length, 0);

      if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
        bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
      }
      if (!bitmask || bitmask == WRAP_BIND_FLAG) {
        var result = createBind(func, bitmask, thisArg);
      } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
        result = createCurry(func, bitmask, arity);
      } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
        result = createPartial(func, bitmask, thisArg, partials);
      } else {
        result = createHybrid.apply(undefined, newData);
      }
      var setter = data ? baseSetData : setData;
      return setWrapToString(setter(result, newData), func, bitmask);
    }

    /**
     * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
     * of source objects to the destination object for all destination properties
     * that resolve to `undefined`.
     *
     * @private
     * @param {*} objValue The destination value.
     * @param {*} srcValue The source value.
     * @param {string} key The key of the property to assign.
     * @param {Object} object The parent object of `objValue`.
     * @returns {*} Returns the value to assign.
     */
    function customDefaultsAssignIn(objValue, srcValue, key, object) {
      if (objValue === undefined ||
          (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
        return srcValue;
      }
      return objValue;
    }

    /**
     * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
     * objects into destination objects that are passed thru.
     *
     * @private
     * @param {*} objValue The destination value.
     * @param {*} srcValue The source value.
     * @param {string} key The key of the property to merge.
     * @param {Object} object The parent object of `objValue`.
     * @param {Object} source The parent object of `srcValue`.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     * @returns {*} Returns the value to assign.
     */
    function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
      if (isObject(objValue) && isObject(srcValue)) {
        // Recursively merge objects and arrays (susceptible to call stack limits).
        stack.set(srcValue, objValue);
        baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
        stack['delete'](srcValue);
      }
      return objValue;
    }

    /**
     * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
     * objects.
     *
     * @private
     * @param {*} value The value to inspect.
     * @param {string} key The key of the property to inspect.
     * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
     */
    function customOmitClone(value) {
      return isPlainObject(value) ? undefined : value;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for arrays with support for
     * partial deep comparisons.
     *
     * @private
     * @param {Array} array The array to compare.
     * @param {Array} other The other array to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `array` and `other` objects.
     * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
     */
    function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
          arrLength = array.length,
          othLength = other.length;

      if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
        return false;
      }
      // Check that cyclic values are equal.
      var arrStacked = stack.get(array);
      var othStacked = stack.get(other);
      if (arrStacked && othStacked) {
        return arrStacked == other && othStacked == array;
      }
      var index = -1,
          result = true,
          seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;

      stack.set(array, other);
      stack.set(other, array);

      // Ignore non-index properties.
      while (++index < arrLength) {
        var arrValue = array[index],
            othValue = other[index];

        if (customizer) {
          var compared = isPartial
            ? customizer(othValue, arrValue, index, other, array, stack)
            : customizer(arrValue, othValue, index, array, other, stack);
        }
        if (compared !== undefined) {
          if (compared) {
            continue;
          }
          result = false;
          break;
        }
        // Recursively compare arrays (susceptible to call stack limits).
        if (seen) {
          if (!arraySome(other, function(othValue, othIndex) {
                if (!cacheHas(seen, othIndex) &&
                    (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
                  return seen.push(othIndex);
                }
              })) {
            result = false;
            break;
          }
        } else if (!(
              arrValue === othValue ||
                equalFunc(arrValue, othValue, bitmask, customizer, stack)
            )) {
          result = false;
          break;
        }
      }
      stack['delete'](array);
      stack['delete'](other);
      return result;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for comparing objects of
     * the same `toStringTag`.
     *
     * **Note:** This function only supports comparing values with tags of
     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {string} tag The `toStringTag` of the objects to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
      switch (tag) {
        case dataViewTag:
          if ((object.byteLength != other.byteLength) ||
              (object.byteOffset != other.byteOffset)) {
            return false;
          }
          object = object.buffer;
          other = other.buffer;

        case arrayBufferTag:
          if ((object.byteLength != other.byteLength) ||
              !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
            return false;
          }
          return true;

        case boolTag:
        case dateTag:
        case numberTag:
          // Coerce booleans to `1` or `0` and dates to milliseconds.
          // Invalid dates are coerced to `NaN`.
          return eq(+object, +other);

        case errorTag:
          return object.name == other.name && object.message == other.message;

        case regexpTag:
        case stringTag:
          // Coerce regexes to strings and treat strings, primitives and objects,
          // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
          // for more details.
          return object == (other + '');

        case mapTag:
          var convert = mapToArray;

        case setTag:
          var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
          convert || (convert = setToArray);

          if (object.size != other.size && !isPartial) {
            return false;
          }
          // Assume cyclic values are equal.
          var stacked = stack.get(object);
          if (stacked) {
            return stacked == other;
          }
          bitmask |= COMPARE_UNORDERED_FLAG;

          // Recursively compare objects (susceptible to call stack limits).
          stack.set(object, other);
          var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
          stack['delete'](object);
          return result;

        case symbolTag:
          if (symbolValueOf) {
            return symbolValueOf.call(object) == symbolValueOf.call(other);
          }
      }
      return false;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for objects with support for
     * partial deep comparisons.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
          objProps = getAllKeys(object),
          objLength = objProps.length,
          othProps = getAllKeys(other),
          othLength = othProps.length;

      if (objLength != othLength && !isPartial) {
        return false;
      }
      var index = objLength;
      while (index--) {
        var key = objProps[index];
        if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
          return false;
        }
      }
      // Check that cyclic values are equal.
      var objStacked = stack.get(object);
      var othStacked = stack.get(other);
      if (objStacked && othStacked) {
        return objStacked == other && othStacked == object;
      }
      var result = true;
      stack.set(object, other);
      stack.set(other, object);

      var skipCtor = isPartial;
      while (++index < objLength) {
        key = objProps[index];
        var objValue = object[key],
            othValue = other[key];

        if (customizer) {
          var compared = isPartial
            ? customizer(othValue, objValue, key, other, object, stack)
            : customizer(objValue, othValue, key, object, other, stack);
        }
        // Recursively compare objects (susceptible to call stack limits).
        if (!(compared === undefined
              ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
              : compared
            )) {
          result = false;
          break;
        }
        skipCtor || (skipCtor = key == 'constructor');
      }
      if (result && !skipCtor) {
        var objCtor = object.constructor,
            othCtor = other.constructor;

        // Non `Object` object instances with different constructors are not equal.
        if (objCtor != othCtor &&
            ('constructor' in object && 'constructor' in other) &&
            !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
              typeof othCtor == 'function' && othCtor instanceof othCtor)) {
          result = false;
        }
      }
      stack['delete'](object);
      stack['delete'](other);
      return result;
    }

    /**
     * A specialized version of `baseRest` which flattens the rest array.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @returns {Function} Returns the new function.
     */
    function flatRest(func) {
      return setToString(overRest(func, undefined, flatten), func + '');
    }

    /**
     * Creates an array of own enumerable property names and symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function getAllKeys(object) {
      return baseGetAllKeys(object, keys, getSymbols);
    }

    /**
     * Creates an array of own and inherited enumerable property names and
     * symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function getAllKeysIn(object) {
      return baseGetAllKeys(object, keysIn, getSymbolsIn);
    }

    /**
     * Gets metadata for `func`.
     *
     * @private
     * @param {Function} func The function to query.
     * @returns {*} Returns the metadata for `func`.
     */
    var getData = !metaMap ? noop : function(func) {
      return metaMap.get(func);
    };

    /**
     * Gets the name of `func`.
     *
     * @private
     * @param {Function} func The function to query.
     * @returns {string} Returns the function name.
     */
    function getFuncName(func) {
      var result = (func.name + ''),
          array = realNames[result],
          length = hasOwnProperty.call(realNames, result) ? array.length : 0;

      while (length--) {
        var data = array[length],
            otherFunc = data.func;
        if (otherFunc == null || otherFunc == func) {
          return data.name;
        }
      }
      return result;
    }

    /**
     * Gets the argument placeholder value for `func`.
     *
     * @private
     * @param {Function} func The function to inspect.
     * @returns {*} Returns the placeholder value.
     */
    function getHolder(func) {
      var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;
      return object.placeholder;
    }

    /**
     * Gets the appropriate "iteratee" function. If `_.iteratee` is customized,
     * this function returns the custom method, otherwise it returns `baseIteratee`.
     * If arguments are provided, the chosen function is invoked with them and
     * its result is returned.
     *
     * @private
     * @param {*} [value] The value to convert to an iteratee.
     * @param {number} [arity] The arity of the created iteratee.
     * @returns {Function} Returns the chosen function or its result.
     */
    function getIteratee() {
      var result = lodash.iteratee || iteratee;
      result = result === iteratee ? baseIteratee : result;
      return arguments.length ? result(arguments[0], arguments[1]) : result;
    }

    /**
     * Gets the data for `map`.
     *
     * @private
     * @param {Object} map The map to query.
     * @param {string} key The reference key.
     * @returns {*} Returns the map data.
     */
    function getMapData(map, key) {
      var data = map.__data__;
      return isKeyable(key)
        ? data[typeof key == 'string' ? 'string' : 'hash']
        : data.map;
    }

    /**
     * Gets the property names, values, and compare flags of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the match data of `object`.
     */
    function getMatchData(object) {
      var result = keys(object),
          length = result.length;

      while (length--) {
        var key = result[length],
            value = object[key];

        result[length] = [key, value, isStrictComparable(value)];
      }
      return result;
    }

    /**
     * Gets the native function at `key` of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {string} key The key of the method to get.
     * @returns {*} Returns the function if it's native, else `undefined`.
     */
    function getNative(object, key) {
      var value = getValue(object, key);
      return baseIsNative(value) ? value : undefined;
    }

    /**
     * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the raw `toStringTag`.
     */
    function getRawTag(value) {
      var isOwn = hasOwnProperty.call(value, symToStringTag),
          tag = value[symToStringTag];

      try {
        value[symToStringTag] = undefined;
        var unmasked = true;
      } catch (e) {}

      var result = nativeObjectToString.call(value);
      if (unmasked) {
        if (isOwn) {
          value[symToStringTag] = tag;
        } else {
          delete value[symToStringTag];
        }
      }
      return result;
    }

    /**
     * Creates an array of the own enumerable symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of symbols.
     */
    var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
      if (object == null) {
        return [];
      }
      object = Object(object);
      return arrayFilter(nativeGetSymbols(object), function(symbol) {
        return propertyIsEnumerable.call(object, symbol);
      });
    };

    /**
     * Creates an array of the own and inherited enumerable symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of symbols.
     */
    var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {
      var result = [];
      while (object) {
        arrayPush(result, getSymbols(object));
        object = getPrototype(object);
      }
      return result;
    };

    /**
     * Gets the `toStringTag` of `value`.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the `toStringTag`.
     */
    var getTag = baseGetTag;

    // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
    if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
        (Map && getTag(new Map) != mapTag) ||
        (Promise && getTag(Promise.resolve()) != promiseTag) ||
        (Set && getTag(new Set) != setTag) ||
        (WeakMap && getTag(new WeakMap) != weakMapTag)) {
      getTag = function(value) {
        var result = baseGetTag(value),
            Ctor = result == objectTag ? value.constructor : undefined,
            ctorString = Ctor ? toSource(Ctor) : '';

        if (ctorString) {
          switch (ctorString) {
            case dataViewCtorString: return dataViewTag;
            case mapCtorString: return mapTag;
            case promiseCtorString: return promiseTag;
            case setCtorString: return setTag;
            case weakMapCtorString: return weakMapTag;
          }
        }
        return result;
      };
    }

    /**
     * Gets the view, applying any `transforms` to the `start` and `end` positions.
     *
     * @private
     * @param {number} start The start of the view.
     * @param {number} end The end of the view.
     * @param {Array} transforms The transformations to apply to the view.
     * @returns {Object} Returns an object containing the `start` and `end`
     *  positions of the view.
     */
    function getView(start, end, transforms) {
      var index = -1,
          length = transforms.length;

      while (++index < length) {
        var data = transforms[index],
            size = data.size;

        switch (data.type) {
          case 'drop':      start += size; break;
          case 'dropRight': end -= size; break;
          case 'take':      end = nativeMin(end, start + size); break;
          case 'takeRight': start = nativeMax(start, end - size); break;
        }
      }
      return { 'start': start, 'end': end };
    }

    /**
     * Extracts wrapper details from the `source` body comment.
     *
     * @private
     * @param {string} source The source to inspect.
     * @returns {Array} Returns the wrapper details.
     */
    function getWrapDetails(source) {
      var match = source.match(reWrapDetails);
      return match ? match[1].split(reSplitDetails) : [];
    }

    /**
     * Checks if `path` exists on `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @param {Function} hasFunc The function to check properties.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     */
    function hasPath(object, path, hasFunc) {
      path = castPath(path, object);

      var index = -1,
          length = path.length,
          result = false;

      while (++index < length) {
        var key = toKey(path[index]);
        if (!(result = object != null && hasFunc(object, key))) {
          break;
        }
        object = object[key];
      }
      if (result || ++index != length) {
        return result;
      }
      length = object == null ? 0 : object.length;
      return !!length && isLength(length) && isIndex(key, length) &&
        (isArray(object) || isArguments(object));
    }

    /**
     * Initializes an array clone.
     *
     * @private
     * @param {Array} array The array to clone.
     * @returns {Array} Returns the initialized clone.
     */
    function initCloneArray(array) {
      var length = array.length,
          result = new array.constructor(length);

      // Add properties assigned by `RegExp#exec`.
      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
        result.index = array.index;
        result.input = array.input;
      }
      return result;
    }

    /**
     * Initializes an object clone.
     *
     * @private
     * @param {Object} object The object to clone.
     * @returns {Object} Returns the initialized clone.
     */
    function initCloneObject(object) {
      return (typeof object.constructor == 'function' && !isPrototype(object))
        ? baseCreate(getPrototype(object))
        : {};
    }

    /**
     * Initializes an object clone based on its `toStringTag`.
     *
     * **Note:** This function only supports cloning values with tags of
     * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
     *
     * @private
     * @param {Object} object The object to clone.
     * @param {string} tag The `toStringTag` of the object to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the initialized clone.
     */
    function initCloneByTag(object, tag, isDeep) {
      var Ctor = object.constructor;
      switch (tag) {
        case arrayBufferTag:
          return cloneArrayBuffer(object);

        case boolTag:
        case dateTag:
          return new Ctor(+object);

        case dataViewTag:
          return cloneDataView(object, isDeep);

        case float32Tag: case float64Tag:
        case int8Tag: case int16Tag: case int32Tag:
        case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
          return cloneTypedArray(object, isDeep);

        case mapTag:
          return new Ctor;

        case numberTag:
        case stringTag:
          return new Ctor(object);

        case regexpTag:
          return cloneRegExp(object);

        case setTag:
          return new Ctor;

        case symbolTag:
          return cloneSymbol(object);
      }
    }

    /**
     * Inserts wrapper `details` in a comment at the top of the `source` body.
     *
     * @private
     * @param {string} source The source to modify.
     * @returns {Array} details The details to insert.
     * @returns {string} Returns the modified source.
     */
    function insertWrapDetails(source, details) {
      var length = details.length;
      if (!length) {
        return source;
      }
      var lastIndex = length - 1;
      details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
      details = details.join(length > 2 ? ', ' : ' ');
      return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
    }

    /**
     * Checks if `value` is a flattenable `arguments` object or array.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
     */
    function isFlattenable(value) {
      return isArray(value) || isArguments(value) ||
        !!(spreadableSymbol && value && value[spreadableSymbol]);
    }

    /**
     * Checks if `value` is a valid array-like index.
     *
     * @private
     * @param {*} value The value to check.
     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
     */
    function isIndex(value, length) {
      var type = typeof value;
      length = length == null ? MAX_SAFE_INTEGER : length;

      return !!length &&
        (type == 'number' ||
          (type != 'symbol' && reIsUint.test(value))) &&
            (value > -1 && value % 1 == 0 && value < length);
    }

    /**
     * Checks if the given arguments are from an iteratee call.
     *
     * @private
     * @param {*} value The potential iteratee value argument.
     * @param {*} index The potential iteratee index or key argument.
     * @param {*} object The potential iteratee object argument.
     * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
     *  else `false`.
     */
    function isIterateeCall(value, index, object) {
      if (!isObject(object)) {
        return false;
      }
      var type = typeof index;
      if (type == 'number'
            ? (isArrayLike(object) && isIndex(index, object.length))
            : (type == 'string' && index in object)
          ) {
        return eq(object[index], value);
      }
      return false;
    }

    /**
     * Checks if `value` is a property name and not a property path.
     *
     * @private
     * @param {*} value The value to check.
     * @param {Object} [object] The object to query keys on.
     * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
     */
    function isKey(value, object) {
      if (isArray(value)) {
        return false;
      }
      var type = typeof value;
      if (type == 'number' || type == 'symbol' || type == 'boolean' ||
          value == null || isSymbol(value)) {
        return true;
      }
      return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
        (object != null && value in Object(object));
    }

    /**
     * Checks if `value` is suitable for use as unique object key.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
     */
    function isKeyable(value) {
      var type = typeof value;
      return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
        ? (value !== '__proto__')
        : (value === null);
    }

    /**
     * Checks if `func` has a lazy counterpart.
     *
     * @private
     * @param {Function} func The function to check.
     * @returns {boolean} Returns `true` if `func` has a lazy counterpart,
     *  else `false`.
     */
    function isLaziable(func) {
      var funcName = getFuncName(func),
          other = lodash[funcName];

      if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
        return false;
      }
      if (func === other) {
        return true;
      }
      var data = getData(other);
      return !!data && func === data[0];
    }

    /**
     * Checks if `func` has its source masked.
     *
     * @private
     * @param {Function} func The function to check.
     * @returns {boolean} Returns `true` if `func` is masked, else `false`.
     */
    function isMasked(func) {
      return !!maskSrcKey && (maskSrcKey in func);
    }

    /**
     * Checks if `func` is capable of being masked.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `func` is maskable, else `false`.
     */
    var isMaskable = coreJsData ? isFunction : stubFalse;

    /**
     * Checks if `value` is likely a prototype object.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
     */
    function isPrototype(value) {
      var Ctor = value && value.constructor,
          proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;

      return value === proto;
    }

    /**
     * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` if suitable for strict
     *  equality comparisons, else `false`.
     */
    function isStrictComparable(value) {
      return value === value && !isObject(value);
    }

    /**
     * A specialized version of `matchesProperty` for source values suitable
     * for strict equality comparisons, i.e. `===`.
     *
     * @private
     * @param {string} key The key of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     */
    function matchesStrictComparable(key, srcValue) {
      return function(object) {
        if (object == null) {
          return false;
        }
        return object[key] === srcValue &&
          (srcValue !== undefined || (key in Object(object)));
      };
    }

    /**
     * A specialized version of `_.memoize` which clears the memoized function's
     * cache when it exceeds `MAX_MEMOIZE_SIZE`.
     *
     * @private
     * @param {Function} func The function to have its output memoized.
     * @returns {Function} Returns the new memoized function.
     */
    function memoizeCapped(func) {
      var result = memoize(func, function(key) {
        if (cache.size === MAX_MEMOIZE_SIZE) {
          cache.clear();
        }
        return key;
      });

      var cache = result.cache;
      return result;
    }

    /**
     * Merges the function metadata of `source` into `data`.
     *
     * Merging metadata reduces the number of wrappers used to invoke a function.
     * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
     * may be applied regardless of execution order. Methods like `_.ary` and
     * `_.rearg` modify function arguments, making the order in which they are
     * executed important, preventing the merging of metadata. However, we make
     * an exception for a safe combined case where curried functions have `_.ary`
     * and or `_.rearg` applied.
     *
     * @private
     * @param {Array} data The destination metadata.
     * @param {Array} source The source metadata.
     * @returns {Array} Returns `data`.
     */
    function mergeData(data, source) {
      var bitmask = data[1],
          srcBitmask = source[1],
          newBitmask = bitmask | srcBitmask,
          isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);

      var isCombo =
        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||
        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||
        ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));

      // Exit early if metadata can't be merged.
      if (!(isCommon || isCombo)) {
        return data;
      }
      // Use source `thisArg` if available.
      if (srcBitmask & WRAP_BIND_FLAG) {
        data[2] = source[2];
        // Set when currying a bound function.
        newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
      }
      // Compose partial arguments.
      var value = source[3];
      if (value) {
        var partials = data[3];
        data[3] = partials ? composeArgs(partials, value, source[4]) : value;
        data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];
      }
      // Compose partial right arguments.
      value = source[5];
      if (value) {
        partials = data[5];
        data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
        data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];
      }
      // Use source `argPos` if available.
      value = source[7];
      if (value) {
        data[7] = value;
      }
      // Use source `ary` if it's smaller.
      if (srcBitmask & WRAP_ARY_FLAG) {
        data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
      }
      // Use source `arity` if one is not provided.
      if (data[9] == null) {
        data[9] = source[9];
      }
      // Use source `func` and merge bitmasks.
      data[0] = source[0];
      data[1] = newBitmask;

      return data;
    }

    /**
     * This function is like
     * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
     * except that it includes inherited enumerable properties.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function nativeKeysIn(object) {
      var result = [];
      if (object != null) {
        for (var key in Object(object)) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * Converts `value` to a string using `Object.prototype.toString`.
     *
     * @private
     * @param {*} value The value to convert.
     * @returns {string} Returns the converted string.
     */
    function objectToString(value) {
      return nativeObjectToString.call(value);
    }

    /**
     * A specialized version of `baseRest` which transforms the rest array.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @param {Function} transform The rest array transform.
     * @returns {Function} Returns the new function.
     */
    function overRest(func, start, transform) {
      start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
      return function() {
        var args = arguments,
            index = -1,
            length = nativeMax(args.length - start, 0),
            array = Array(length);

        while (++index < length) {
          array[index] = args[start + index];
        }
        index = -1;
        var otherArgs = Array(start + 1);
        while (++index < start) {
          otherArgs[index] = args[index];
        }
        otherArgs[start] = transform(array);
        return apply(func, this, otherArgs);
      };
    }

    /**
     * Gets the parent value at `path` of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array} path The path to get the parent value of.
     * @returns {*} Returns the parent value.
     */
    function parent(object, path) {
      return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
    }

    /**
     * Reorder `array` according to the specified indexes where the element at
     * the first index is assigned as the first element, the element at
     * the second index is assigned as the second element, and so on.
     *
     * @private
     * @param {Array} array The array to reorder.
     * @param {Array} indexes The arranged array indexes.
     * @returns {Array} Returns `array`.
     */
    function reorder(array, indexes) {
      var arrLength = array.length,
          length = nativeMin(indexes.length, arrLength),
          oldArray = copyArray(array);

      while (length--) {
        var index = indexes[length];
        array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
      }
      return array;
    }

    /**
     * Gets the value at `key`, unless `key` is "__proto__" or "constructor".
     *
     * @private
     * @param {Object} object The object to query.
     * @param {string} key The key of the property to get.
     * @returns {*} Returns the property value.
     */
    function safeGet(object, key) {
      if (key === 'constructor' && typeof object[key] === 'function') {
        return;
      }

      if (key == '__proto__') {
        return;
      }

      return object[key];
    }

    /**
     * Sets metadata for `func`.
     *
     * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
     * period of time, it will trip its breaker and transition to an identity
     * function to avoid garbage collection pauses in V8. See
     * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
     * for more details.
     *
     * @private
     * @param {Function} func The function to associate metadata with.
     * @param {*} data The metadata.
     * @returns {Function} Returns `func`.
     */
    var setData = shortOut(baseSetData);

    /**
     * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).
     *
     * @private
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @returns {number|Object} Returns the timer id or timeout object.
     */
    var setTimeout = ctxSetTimeout || function(func, wait) {
      return root.setTimeout(func, wait);
    };

    /**
     * Sets the `toString` method of `func` to return `string`.
     *
     * @private
     * @param {Function} func The function to modify.
     * @param {Function} string The `toString` result.
     * @returns {Function} Returns `func`.
     */
    var setToString = shortOut(baseSetToString);

    /**
     * Sets the `toString` method of `wrapper` to mimic the source of `reference`
     * with wrapper details in a comment at the top of the source body.
     *
     * @private
     * @param {Function} wrapper The function to modify.
     * @param {Function} reference The reference function.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @returns {Function} Returns `wrapper`.
     */
    function setWrapToString(wrapper, reference, bitmask) {
      var source = (reference + '');
      return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
    }

    /**
     * Creates a function that'll short out and invoke `identity` instead
     * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
     * milliseconds.
     *
     * @private
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new shortable function.
     */
    function shortOut(func) {
      var count = 0,
          lastCalled = 0;

      return function() {
        var stamp = nativeNow(),
            remaining = HOT_SPAN - (stamp - lastCalled);

        lastCalled = stamp;
        if (remaining > 0) {
          if (++count >= HOT_COUNT) {
            return arguments[0];
          }
        } else {
          count = 0;
        }
        return func.apply(undefined, arguments);
      };
    }

    /**
     * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
     *
     * @private
     * @param {Array} array The array to shuffle.
     * @param {number} [size=array.length] The size of `array`.
     * @returns {Array} Returns `array`.
     */
    function shuffleSelf(array, size) {
      var index = -1,
          length = array.length,
          lastIndex = length - 1;

      size = size === undefined ? length : size;
      while (++index < size) {
        var rand = baseRandom(index, lastIndex),
            value = array[rand];

        array[rand] = array[index];
        array[index] = value;
      }
      array.length = size;
      return array;
    }

    /**
     * Converts `string` to a property path array.
     *
     * @private
     * @param {string} string The string to convert.
     * @returns {Array} Returns the property path array.
     */
    var stringToPath = memoizeCapped(function(string) {
      var result = [];
      if (string.charCodeAt(0) === 46 /* . */) {
        result.push('');
      }
      string.replace(rePropName, function(match, number, quote, subString) {
        result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
      });
      return result;
    });

    /**
     * Converts `value` to a string key if it's not a string or symbol.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {string|symbol} Returns the key.
     */
    function toKey(value) {
      if (typeof value == 'string' || isSymbol(value)) {
        return value;
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
    }

    /**
     * Converts `func` to its source code.
     *
     * @private
     * @param {Function} func The function to convert.
     * @returns {string} Returns the source code.
     */
    function toSource(func) {
      if (func != null) {
        try {
          return funcToString.call(func);
        } catch (e) {}
        try {
          return (func + '');
        } catch (e) {}
      }
      return '';
    }

    /**
     * Updates wrapper `details` based on `bitmask` flags.
     *
     * @private
     * @returns {Array} details The details to modify.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @returns {Array} Returns `details`.
     */
    function updateWrapDetails(details, bitmask) {
      arrayEach(wrapFlags, function(pair) {
        var value = '_.' + pair[0];
        if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {
          details.push(value);
        }
      });
      return details.sort();
    }

    /**
     * Creates a clone of `wrapper`.
     *
     * @private
     * @param {Object} wrapper The wrapper to clone.
     * @returns {Object} Returns the cloned wrapper.
     */
    function wrapperClone(wrapper) {
      if (wrapper instanceof LazyWrapper) {
        return wrapper.clone();
      }
      var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
      result.__actions__ = copyArray(wrapper.__actions__);
      result.__index__  = wrapper.__index__;
      result.__values__ = wrapper.__values__;
      return result;
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates an array of elements split into groups the length of `size`.
     * If `array` can't be split evenly, the final chunk will be the remaining
     * elements.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to process.
     * @param {number} [size=1] The length of each chunk
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the new array of chunks.
     * @example
     *
     * _.chunk(['a', 'b', 'c', 'd'], 2);
     * // => [['a', 'b'], ['c', 'd']]
     *
     * _.chunk(['a', 'b', 'c', 'd'], 3);
     * // => [['a', 'b', 'c'], ['d']]
     */
    function chunk(array, size, guard) {
      if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {
        size = 1;
      } else {
        size = nativeMax(toInteger(size), 0);
      }
      var length = array == null ? 0 : array.length;
      if (!length || size < 1) {
        return [];
      }
      var index = 0,
          resIndex = 0,
          result = Array(nativeCeil(length / size));

      while (index < length) {
        result[resIndex++] = baseSlice(array, index, (index += size));
      }
      return result;
    }

    /**
     * Creates an array with all falsey values removed. The values `false`, `null`,
     * `0`, `""`, `undefined`, and `NaN` are falsey.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to compact.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.compact([0, 1, false, 2, '', 3]);
     * // => [1, 2, 3]
     */
    function compact(array) {
      var index = -1,
          length = array == null ? 0 : array.length,
          resIndex = 0,
          result = [];

      while (++index < length) {
        var value = array[index];
        if (value) {
          result[resIndex++] = value;
        }
      }
      return result;
    }

    /**
     * Creates a new array concatenating `array` with any additional arrays
     * and/or values.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to concatenate.
     * @param {...*} [values] The values to concatenate.
     * @returns {Array} Returns the new concatenated array.
     * @example
     *
     * var array = [1];
     * var other = _.concat(array, 2, [3], [[4]]);
     *
     * console.log(other);
     * // => [1, 2, 3, [4]]
     *
     * console.log(array);
     * // => [1]
     */
    function concat() {
      var length = arguments.length;
      if (!length) {
        return [];
      }
      var args = Array(length - 1),
          array = arguments[0],
          index = length;

      while (index--) {
        args[index - 1] = arguments[index];
      }
      return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
    }

    /**
     * Creates an array of `array` values not included in the other given arrays
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. The order and references of result values are
     * determined by the first array.
     *
     * **Note:** Unlike `_.pullAll`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.without, _.xor
     * @example
     *
     * _.difference([2, 1], [2, 3]);
     * // => [1]
     */
    var difference = baseRest(function(array, values) {
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))
        : [];
    });

    /**
     * This method is like `_.difference` except that it accepts `iteratee` which
     * is invoked for each element of `array` and `values` to generate the criterion
     * by which they're compared. The order and references of result values are
     * determined by the first array. The iteratee is invoked with one argument:
     * (value).
     *
     * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
     * // => [{ 'x': 2 }]
     */
    var differenceBy = baseRest(function(array, values) {
      var iteratee = last(values);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))
        : [];
    });

    /**
     * This method is like `_.difference` except that it accepts `comparator`
     * which is invoked to compare elements of `array` to `values`. The order and
     * references of result values are determined by the first array. The comparator
     * is invoked with two arguments: (arrVal, othVal).
     *
     * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     *
     * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
     * // => [{ 'x': 2, 'y': 1 }]
     */
    var differenceWith = baseRest(function(array, values) {
      var comparator = last(values);
      if (isArrayLikeObject(comparator)) {
        comparator = undefined;
      }
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)
        : [];
    });

    /**
     * Creates a slice of `array` with `n` elements dropped from the beginning.
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to drop.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.drop([1, 2, 3]);
     * // => [2, 3]
     *
     * _.drop([1, 2, 3], 2);
     * // => [3]
     *
     * _.drop([1, 2, 3], 5);
     * // => []
     *
     * _.drop([1, 2, 3], 0);
     * // => [1, 2, 3]
     */
    function drop(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      return baseSlice(array, n < 0 ? 0 : n, length);
    }

    /**
     * Creates a slice of `array` with `n` elements dropped from the end.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to drop.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.dropRight([1, 2, 3]);
     * // => [1, 2]
     *
     * _.dropRight([1, 2, 3], 2);
     * // => [1]
     *
     * _.dropRight([1, 2, 3], 5);
     * // => []
     *
     * _.dropRight([1, 2, 3], 0);
     * // => [1, 2, 3]
     */
    function dropRight(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      n = length - n;
      return baseSlice(array, 0, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` excluding elements dropped from the end.
     * Elements are dropped until `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.dropRightWhile(users, function(o) { return !o.active; });
     * // => objects for ['barney']
     *
     * // The `_.matches` iteratee shorthand.
     * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
     * // => objects for ['barney', 'fred']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.dropRightWhile(users, ['active', false]);
     * // => objects for ['barney']
     *
     * // The `_.property` iteratee shorthand.
     * _.dropRightWhile(users, 'active');
     * // => objects for ['barney', 'fred', 'pebbles']
     */
    function dropRightWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), true, true)
        : [];
    }

    /**
     * Creates a slice of `array` excluding elements dropped from the beginning.
     * Elements are dropped until `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.dropWhile(users, function(o) { return !o.active; });
     * // => objects for ['pebbles']
     *
     * // The `_.matches` iteratee shorthand.
     * _.dropWhile(users, { 'user': 'barney', 'active': false });
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.dropWhile(users, ['active', false]);
     * // => objects for ['pebbles']
     *
     * // The `_.property` iteratee shorthand.
     * _.dropWhile(users, 'active');
     * // => objects for ['barney', 'fred', 'pebbles']
     */
    function dropWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), true)
        : [];
    }

    /**
     * Fills elements of `array` with `value` from `start` up to, but not
     * including, `end`.
     *
     * **Note:** This method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Array
     * @param {Array} array The array to fill.
     * @param {*} value The value to fill `array` with.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _.fill(array, 'a');
     * console.log(array);
     * // => ['a', 'a', 'a']
     *
     * _.fill(Array(3), 2);
     * // => [2, 2, 2]
     *
     * _.fill([4, 6, 8, 10], '*', 1, 3);
     * // => [4, '*', '*', 10]
     */
    function fill(array, value, start, end) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
        start = 0;
        end = length;
      }
      return baseFill(array, value, start, end);
    }

    /**
     * This method is like `_.find` except that it returns the index of the first
     * element `predicate` returns truthy for instead of the element itself.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.findIndex(users, function(o) { return o.user == 'barney'; });
     * // => 0
     *
     * // The `_.matches` iteratee shorthand.
     * _.findIndex(users, { 'user': 'fred', 'active': false });
     * // => 1
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findIndex(users, ['active', false]);
     * // => 0
     *
     * // The `_.property` iteratee shorthand.
     * _.findIndex(users, 'active');
     * // => 2
     */
    function findIndex(array, predicate, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = fromIndex == null ? 0 : toInteger(fromIndex);
      if (index < 0) {
        index = nativeMax(length + index, 0);
      }
      return baseFindIndex(array, getIteratee(predicate, 3), index);
    }

    /**
     * This method is like `_.findIndex` except that it iterates over elements
     * of `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=array.length-1] The index to search from.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
     * // => 2
     *
     * // The `_.matches` iteratee shorthand.
     * _.findLastIndex(users, { 'user': 'barney', 'active': true });
     * // => 0
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findLastIndex(users, ['active', false]);
     * // => 2
     *
     * // The `_.property` iteratee shorthand.
     * _.findLastIndex(users, 'active');
     * // => 0
     */
    function findLastIndex(array, predicate, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = length - 1;
      if (fromIndex !== undefined) {
        index = toInteger(fromIndex);
        index = fromIndex < 0
          ? nativeMax(length + index, 0)
          : nativeMin(index, length - 1);
      }
      return baseFindIndex(array, getIteratee(predicate, 3), index, true);
    }

    /**
     * Flattens `array` a single level deep.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * _.flatten([1, [2, [3, [4]], 5]]);
     * // => [1, 2, [3, [4]], 5]
     */
    function flatten(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseFlatten(array, 1) : [];
    }

    /**
     * Recursively flattens `array`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * _.flattenDeep([1, [2, [3, [4]], 5]]);
     * // => [1, 2, 3, 4, 5]
     */
    function flattenDeep(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseFlatten(array, INFINITY) : [];
    }

    /**
     * Recursively flatten `array` up to `depth` times.
     *
     * @static
     * @memberOf _
     * @since 4.4.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @param {number} [depth=1] The maximum recursion depth.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * var array = [1, [2, [3, [4]], 5]];
     *
     * _.flattenDepth(array, 1);
     * // => [1, 2, [3, [4]], 5]
     *
     * _.flattenDepth(array, 2);
     * // => [1, 2, 3, [4], 5]
     */
    function flattenDepth(array, depth) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      depth = depth === undefined ? 1 : toInteger(depth);
      return baseFlatten(array, depth);
    }

    /**
     * The inverse of `_.toPairs`; this method returns an object composed
     * from key-value `pairs`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} pairs The key-value pairs.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.fromPairs([['a', 1], ['b', 2]]);
     * // => { 'a': 1, 'b': 2 }
     */
    function fromPairs(pairs) {
      var index = -1,
          length = pairs == null ? 0 : pairs.length,
          result = {};

      while (++index < length) {
        var pair = pairs[index];
        result[pair[0]] = pair[1];
      }
      return result;
    }

    /**
     * Gets the first element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @alias first
     * @category Array
     * @param {Array} array The array to query.
     * @returns {*} Returns the first element of `array`.
     * @example
     *
     * _.head([1, 2, 3]);
     * // => 1
     *
     * _.head([]);
     * // => undefined
     */
    function head(array) {
      return (array && array.length) ? array[0] : undefined;
    }

    /**
     * Gets the index at which the first occurrence of `value` is found in `array`
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. If `fromIndex` is negative, it's used as the
     * offset from the end of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.indexOf([1, 2, 1, 2], 2);
     * // => 1
     *
     * // Search from the `fromIndex`.
     * _.indexOf([1, 2, 1, 2], 2, 2);
     * // => 3
     */
    function indexOf(array, value, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = fromIndex == null ? 0 : toInteger(fromIndex);
      if (index < 0) {
        index = nativeMax(length + index, 0);
      }
      return baseIndexOf(array, value, index);
    }

    /**
     * Gets all but the last element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.initial([1, 2, 3]);
     * // => [1, 2]
     */
    function initial(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseSlice(array, 0, -1) : [];
    }

    /**
     * Creates an array of unique values that are included in all given arrays
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. The order and references of result values are
     * determined by the first array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * _.intersection([2, 1], [2, 3]);
     * // => [2]
     */
    var intersection = baseRest(function(arrays) {
      var mapped = arrayMap(arrays, castArrayLikeObject);
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped)
        : [];
    });

    /**
     * This method is like `_.intersection` except that it accepts `iteratee`
     * which is invoked for each element of each `arrays` to generate the criterion
     * by which they're compared. The order and references of result values are
     * determined by the first array. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [2.1]
     *
     * // The `_.property` iteratee shorthand.
     * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }]
     */
    var intersectionBy = baseRest(function(arrays) {
      var iteratee = last(arrays),
          mapped = arrayMap(arrays, castArrayLikeObject);

      if (iteratee === last(mapped)) {
        iteratee = undefined;
      } else {
        mapped.pop();
      }
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped, getIteratee(iteratee, 2))
        : [];
    });

    /**
     * This method is like `_.intersection` except that it accepts `comparator`
     * which is invoked to compare elements of `arrays`. The order and references
     * of result values are determined by the first array. The comparator is
     * invoked with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.intersectionWith(objects, others, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }]
     */
    var intersectionWith = baseRest(function(arrays) {
      var comparator = last(arrays),
          mapped = arrayMap(arrays, castArrayLikeObject);

      comparator = typeof comparator == 'function' ? comparator : undefined;
      if (comparator) {
        mapped.pop();
      }
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped, undefined, comparator)
        : [];
    });

    /**
     * Converts all elements in `array` into a string separated by `separator`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to convert.
     * @param {string} [separator=','] The element separator.
     * @returns {string} Returns the joined string.
     * @example
     *
     * _.join(['a', 'b', 'c'], '~');
     * // => 'a~b~c'
     */
    function join(array, separator) {
      return array == null ? '' : nativeJoin.call(array, separator);
    }

    /**
     * Gets the last element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {*} Returns the last element of `array`.
     * @example
     *
     * _.last([1, 2, 3]);
     * // => 3
     */
    function last(array) {
      var length = array == null ? 0 : array.length;
      return length ? array[length - 1] : undefined;
    }

    /**
     * This method is like `_.indexOf` except that it iterates over elements of
     * `array` from right to left.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=array.length-1] The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.lastIndexOf([1, 2, 1, 2], 2);
     * // => 3
     *
     * // Search from the `fromIndex`.
     * _.lastIndexOf([1, 2, 1, 2], 2, 2);
     * // => 1
     */
    function lastIndexOf(array, value, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = length;
      if (fromIndex !== undefined) {
        index = toInteger(fromIndex);
        index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
      }
      return value === value
        ? strictLastIndexOf(array, value, index)
        : baseFindIndex(array, baseIsNaN, index, true);
    }

    /**
     * Gets the element at index `n` of `array`. If `n` is negative, the nth
     * element from the end is returned.
     *
     * @static
     * @memberOf _
     * @since 4.11.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=0] The index of the element to return.
     * @returns {*} Returns the nth element of `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'd'];
     *
     * _.nth(array, 1);
     * // => 'b'
     *
     * _.nth(array, -2);
     * // => 'c';
     */
    function nth(array, n) {
      return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;
    }

    /**
     * Removes all given values from `array` using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
     * to remove elements from an array by predicate.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {...*} [values] The values to remove.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
     *
     * _.pull(array, 'a', 'c');
     * console.log(array);
     * // => ['b', 'b']
     */
    var pull = baseRest(pullAll);

    /**
     * This method is like `_.pull` except that it accepts an array of values to remove.
     *
     * **Note:** Unlike `_.difference`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
     *
     * _.pullAll(array, ['a', 'c']);
     * console.log(array);
     * // => ['b', 'b']
     */
    function pullAll(array, values) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values)
        : array;
    }

    /**
     * This method is like `_.pullAll` except that it accepts `iteratee` which is
     * invoked for each element of `array` and `values` to generate the criterion
     * by which they're compared. The iteratee is invoked with one argument: (value).
     *
     * **Note:** Unlike `_.differenceBy`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
     *
     * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
     * console.log(array);
     * // => [{ 'x': 2 }]
     */
    function pullAllBy(array, values, iteratee) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values, getIteratee(iteratee, 2))
        : array;
    }

    /**
     * This method is like `_.pullAll` except that it accepts `comparator` which
     * is invoked to compare elements of `array` to `values`. The comparator is
     * invoked with two arguments: (arrVal, othVal).
     *
     * **Note:** Unlike `_.differenceWith`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
     *
     * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
     * console.log(array);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
     */
    function pullAllWith(array, values, comparator) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values, undefined, comparator)
        : array;
    }

    /**
     * Removes elements from `array` corresponding to `indexes` and returns an
     * array of removed elements.
     *
     * **Note:** Unlike `_.at`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {...(number|number[])} [indexes] The indexes of elements to remove.
     * @returns {Array} Returns the new array of removed elements.
     * @example
     *
     * var array = ['a', 'b', 'c', 'd'];
     * var pulled = _.pullAt(array, [1, 3]);
     *
     * console.log(array);
     * // => ['a', 'c']
     *
     * console.log(pulled);
     * // => ['b', 'd']
     */
    var pullAt = flatRest(function(array, indexes) {
      var length = array == null ? 0 : array.length,
          result = baseAt(array, indexes);

      basePullAt(array, arrayMap(indexes, function(index) {
        return isIndex(index, length) ? +index : index;
      }).sort(compareAscending));

      return result;
    });

    /**
     * Removes all elements from `array` that `predicate` returns truthy for
     * and returns an array of the removed elements. The predicate is invoked
     * with three arguments: (value, index, array).
     *
     * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
     * to pull elements from an array by value.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new array of removed elements.
     * @example
     *
     * var array = [1, 2, 3, 4];
     * var evens = _.remove(array, function(n) {
     *   return n % 2 == 0;
     * });
     *
     * console.log(array);
     * // => [1, 3]
     *
     * console.log(evens);
     * // => [2, 4]
     */
    function remove(array, predicate) {
      var result = [];
      if (!(array && array.length)) {
        return result;
      }
      var index = -1,
          indexes = [],
          length = array.length;

      predicate = getIteratee(predicate, 3);
      while (++index < length) {
        var value = array[index];
        if (predicate(value, index, array)) {
          result.push(value);
          indexes.push(index);
        }
      }
      basePullAt(array, indexes);
      return result;
    }

    /**
     * Reverses `array` so that the first element becomes the last, the second
     * element becomes the second to last, and so on.
     *
     * **Note:** This method mutates `array` and is based on
     * [`Array#reverse`](https://mdn.io/Array/reverse).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _.reverse(array);
     * // => [3, 2, 1]
     *
     * console.log(array);
     * // => [3, 2, 1]
     */
    function reverse(array) {
      return array == null ? array : nativeReverse.call(array);
    }

    /**
     * Creates a slice of `array` from `start` up to, but not including, `end`.
     *
     * **Note:** This method is used instead of
     * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
     * returned.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function slice(array, start, end) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
        start = 0;
        end = length;
      }
      else {
        start = start == null ? 0 : toInteger(start);
        end = end === undefined ? length : toInteger(end);
      }
      return baseSlice(array, start, end);
    }

    /**
     * Uses a binary search to determine the lowest index at which `value`
     * should be inserted into `array` in order to maintain its sort order.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedIndex([30, 50], 40);
     * // => 1
     */
    function sortedIndex(array, value) {
      return baseSortedIndex(array, value);
    }

    /**
     * This method is like `_.sortedIndex` except that it accepts `iteratee`
     * which is invoked for `value` and each element of `array` to compute their
     * sort ranking. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * var objects = [{ 'x': 4 }, { 'x': 5 }];
     *
     * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
     * // => 0
     *
     * // The `_.property` iteratee shorthand.
     * _.sortedIndexBy(objects, { 'x': 4 }, 'x');
     * // => 0
     */
    function sortedIndexBy(array, value, iteratee) {
      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));
    }

    /**
     * This method is like `_.indexOf` except that it performs a binary
     * search on a sorted `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
     * // => 1
     */
    function sortedIndexOf(array, value) {
      var length = array == null ? 0 : array.length;
      if (length) {
        var index = baseSortedIndex(array, value);
        if (index < length && eq(array[index], value)) {
          return index;
        }
      }
      return -1;
    }

    /**
     * This method is like `_.sortedIndex` except that it returns the highest
     * index at which `value` should be inserted into `array` in order to
     * maintain its sort order.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedLastIndex([4, 5, 5, 5, 6], 5);
     * // => 4
     */
    function sortedLastIndex(array, value) {
      return baseSortedIndex(array, value, true);
    }

    /**
     * This method is like `_.sortedLastIndex` except that it accepts `iteratee`
     * which is invoked for `value` and each element of `array` to compute their
     * sort ranking. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * var objects = [{ 'x': 4 }, { 'x': 5 }];
     *
     * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
     * // => 1
     *
     * // The `_.property` iteratee shorthand.
     * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
     * // => 1
     */
    function sortedLastIndexBy(array, value, iteratee) {
      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);
    }

    /**
     * This method is like `_.lastIndexOf` except that it performs a binary
     * search on a sorted `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
     * // => 3
     */
    function sortedLastIndexOf(array, value) {
      var length = array == null ? 0 : array.length;
      if (length) {
        var index = baseSortedIndex(array, value, true) - 1;
        if (eq(array[index], value)) {
          return index;
        }
      }
      return -1;
    }

    /**
     * This method is like `_.uniq` except that it's designed and optimized
     * for sorted arrays.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.sortedUniq([1, 1, 2]);
     * // => [1, 2]
     */
    function sortedUniq(array) {
      return (array && array.length)
        ? baseSortedUniq(array)
        : [];
    }

    /**
     * This method is like `_.uniqBy` except that it's designed and optimized
     * for sorted arrays.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
     * // => [1.1, 2.3]
     */
    function sortedUniqBy(array, iteratee) {
      return (array && array.length)
        ? baseSortedUniq(array, getIteratee(iteratee, 2))
        : [];
    }

    /**
     * Gets all but the first element of `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.tail([1, 2, 3]);
     * // => [2, 3]
     */
    function tail(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseSlice(array, 1, length) : [];
    }

    /**
     * Creates a slice of `array` with `n` elements taken from the beginning.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to take.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.take([1, 2, 3]);
     * // => [1]
     *
     * _.take([1, 2, 3], 2);
     * // => [1, 2]
     *
     * _.take([1, 2, 3], 5);
     * // => [1, 2, 3]
     *
     * _.take([1, 2, 3], 0);
     * // => []
     */
    function take(array, n, guard) {
      if (!(array && array.length)) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      return baseSlice(array, 0, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` with `n` elements taken from the end.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to take.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.takeRight([1, 2, 3]);
     * // => [3]
     *
     * _.takeRight([1, 2, 3], 2);
     * // => [2, 3]
     *
     * _.takeRight([1, 2, 3], 5);
     * // => [1, 2, 3]
     *
     * _.takeRight([1, 2, 3], 0);
     * // => []
     */
    function takeRight(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      n = length - n;
      return baseSlice(array, n < 0 ? 0 : n, length);
    }

    /**
     * Creates a slice of `array` with elements taken from the end. Elements are
     * taken until `predicate` returns falsey. The predicate is invoked with
     * three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.takeRightWhile(users, function(o) { return !o.active; });
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.matches` iteratee shorthand.
     * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
     * // => objects for ['pebbles']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.takeRightWhile(users, ['active', false]);
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.property` iteratee shorthand.
     * _.takeRightWhile(users, 'active');
     * // => []
     */
    function takeRightWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), false, true)
        : [];
    }

    /**
     * Creates a slice of `array` with elements taken from the beginning. Elements
     * are taken until `predicate` returns falsey. The predicate is invoked with
     * three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.takeWhile(users, function(o) { return !o.active; });
     * // => objects for ['barney', 'fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.takeWhile(users, { 'user': 'barney', 'active': false });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.takeWhile(users, ['active', false]);
     * // => objects for ['barney', 'fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.takeWhile(users, 'active');
     * // => []
     */
    function takeWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3))
        : [];
    }

    /**
     * Creates an array of unique values, in order, from all given arrays using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * _.union([2], [1, 2]);
     * // => [2, 1]
     */
    var union = baseRest(function(arrays) {
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
    });

    /**
     * This method is like `_.union` except that it accepts `iteratee` which is
     * invoked for each element of each `arrays` to generate the criterion by
     * which uniqueness is computed. Result values are chosen from the first
     * array in which the value occurs. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * _.unionBy([2.1], [1.2, 2.3], Math.floor);
     * // => [2.1, 1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }, { 'x': 2 }]
     */
    var unionBy = baseRest(function(arrays) {
      var iteratee = last(arrays);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));
    });

    /**
     * This method is like `_.union` except that it accepts `comparator` which
     * is invoked to compare elements of `arrays`. Result values are chosen from
     * the first array in which the value occurs. The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.unionWith(objects, others, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
     */
    var unionWith = baseRest(function(arrays) {
      var comparator = last(arrays);
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);
    });

    /**
     * Creates a duplicate-free version of an array, using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons, in which only the first occurrence of each element
     * is kept. The order of result values is determined by the order they occur
     * in the array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.uniq([2, 1, 2]);
     * // => [2, 1]
     */
    function uniq(array) {
      return (array && array.length) ? baseUniq(array) : [];
    }

    /**
     * This method is like `_.uniq` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * uniqueness is computed. The order of result values is determined by the
     * order they occur in the array. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
     * // => [2.1, 1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }, { 'x': 2 }]
     */
    function uniqBy(array, iteratee) {
      return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];
    }

    /**
     * This method is like `_.uniq` except that it accepts `comparator` which
     * is invoked to compare elements of `array`. The order of result values is
     * determined by the order they occur in the array.The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.uniqWith(objects, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
     */
    function uniqWith(array, comparator) {
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return (array && array.length) ? baseUniq(array, undefined, comparator) : [];
    }

    /**
     * This method is like `_.zip` except that it accepts an array of grouped
     * elements and creates an array regrouping the elements to their pre-zip
     * configuration.
     *
     * @static
     * @memberOf _
     * @since 1.2.0
     * @category Array
     * @param {Array} array The array of grouped elements to process.
     * @returns {Array} Returns the new array of regrouped elements.
     * @example
     *
     * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
     * // => [['a', 1, true], ['b', 2, false]]
     *
     * _.unzip(zipped);
     * // => [['a', 'b'], [1, 2], [true, false]]
     */
    function unzip(array) {
      if (!(array && array.length)) {
        return [];
      }
      var length = 0;
      array = arrayFilter(array, function(group) {
        if (isArrayLikeObject(group)) {
          length = nativeMax(group.length, length);
          return true;
        }
      });
      return baseTimes(length, function(index) {
        return arrayMap(array, baseProperty(index));
      });
    }

    /**
     * This method is like `_.unzip` except that it accepts `iteratee` to specify
     * how regrouped values should be combined. The iteratee is invoked with the
     * elements of each group: (...group).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Array
     * @param {Array} array The array of grouped elements to process.
     * @param {Function} [iteratee=_.identity] The function to combine
     *  regrouped values.
     * @returns {Array} Returns the new array of regrouped elements.
     * @example
     *
     * var zipped = _.zip([1, 2], [10, 20], [100, 200]);
     * // => [[1, 10, 100], [2, 20, 200]]
     *
     * _.unzipWith(zipped, _.add);
     * // => [3, 30, 300]
     */
    function unzipWith(array, iteratee) {
      if (!(array && array.length)) {
        return [];
      }
      var result = unzip(array);
      if (iteratee == null) {
        return result;
      }
      return arrayMap(result, function(group) {
        return apply(iteratee, undefined, group);
      });
    }

    /**
     * Creates an array excluding all given values using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * **Note:** Unlike `_.pull`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...*} [values] The values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.difference, _.xor
     * @example
     *
     * _.without([2, 1, 2, 3], 1, 2);
     * // => [3]
     */
    var without = baseRest(function(array, values) {
      return isArrayLikeObject(array)
        ? baseDifference(array, values)
        : [];
    });

    /**
     * Creates an array of unique values that is the
     * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
     * of the given arrays. The order of result values is determined by the order
     * they occur in the arrays.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.difference, _.without
     * @example
     *
     * _.xor([2, 1], [2, 3]);
     * // => [1, 3]
     */
    var xor = baseRest(function(arrays) {
      return baseXor(arrayFilter(arrays, isArrayLikeObject));
    });

    /**
     * This method is like `_.xor` except that it accepts `iteratee` which is
     * invoked for each element of each `arrays` to generate the criterion by
     * which by which they're compared. The order of result values is determined
     * by the order they occur in the arrays. The iteratee is invoked with one
     * argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [1.2, 3.4]
     *
     * // The `_.property` iteratee shorthand.
     * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 2 }]
     */
    var xorBy = baseRest(function(arrays) {
      var iteratee = last(arrays);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));
    });

    /**
     * This method is like `_.xor` except that it accepts `comparator` which is
     * invoked to compare elements of `arrays`. The order of result values is
     * determined by the order they occur in the arrays. The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.xorWith(objects, others, _.isEqual);
     * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
     */
    var xorWith = baseRest(function(arrays) {
      var comparator = last(arrays);
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);
    });

    /**
     * Creates an array of grouped elements, the first of which contains the
     * first elements of the given arrays, the second of which contains the
     * second elements of the given arrays, and so on.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to process.
     * @returns {Array} Returns the new array of grouped elements.
     * @example
     *
     * _.zip(['a', 'b'], [1, 2], [true, false]);
     * // => [['a', 1, true], ['b', 2, false]]
     */
    var zip = baseRest(unzip);

    /**
     * This method is like `_.fromPairs` except that it accepts two arrays,
     * one of property identifiers and one of corresponding values.
     *
     * @static
     * @memberOf _
     * @since 0.4.0
     * @category Array
     * @param {Array} [props=[]] The property identifiers.
     * @param {Array} [values=[]] The property values.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.zipObject(['a', 'b'], [1, 2]);
     * // => { 'a': 1, 'b': 2 }
     */
    function zipObject(props, values) {
      return baseZipObject(props || [], values || [], assignValue);
    }

    /**
     * This method is like `_.zipObject` except that it supports property paths.
     *
     * @static
     * @memberOf _
     * @since 4.1.0
     * @category Array
     * @param {Array} [props=[]] The property identifiers.
     * @param {Array} [values=[]] The property values.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
     * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
     */
    function zipObjectDeep(props, values) {
      return baseZipObject(props || [], values || [], baseSet);
    }

    /**
     * This method is like `_.zip` except that it accepts `iteratee` to specify
     * how grouped values should be combined. The iteratee is invoked with the
     * elements of each group: (...group).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Array
     * @param {...Array} [arrays] The arrays to process.
     * @param {Function} [iteratee=_.identity] The function to combine
     *  grouped values.
     * @returns {Array} Returns the new array of grouped elements.
     * @example
     *
     * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
     *   return a + b + c;
     * });
     * // => [111, 222]
     */
    var zipWith = baseRest(function(arrays) {
      var length = arrays.length,
          iteratee = length > 1 ? arrays[length - 1] : undefined;

      iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
      return unzipWith(arrays, iteratee);
    });

    /*------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` wrapper instance that wraps `value` with explicit method
     * chain sequences enabled. The result of such sequences must be unwrapped
     * with `_#value`.
     *
     * @static
     * @memberOf _
     * @since 1.3.0
     * @category Seq
     * @param {*} value The value to wrap.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36 },
     *   { 'user': 'fred',    'age': 40 },
     *   { 'user': 'pebbles', 'age': 1 }
     * ];
     *
     * var youngest = _
     *   .chain(users)
     *   .sortBy('age')
     *   .map(function(o) {
     *     return o.user + ' is ' + o.age;
     *   })
     *   .head()
     *   .value();
     * // => 'pebbles is 1'
     */
    function chain(value) {
      var result = lodash(value);
      result.__chain__ = true;
      return result;
    }

    /**
     * This method invokes `interceptor` and returns `value`. The interceptor
     * is invoked with one argument; (value). The purpose of this method is to
     * "tap into" a method chain sequence in order to modify intermediate results.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @returns {*} Returns `value`.
     * @example
     *
     * _([1, 2, 3])
     *  .tap(function(array) {
     *    // Mutate input array.
     *    array.pop();
     *  })
     *  .reverse()
     *  .value();
     * // => [2, 1]
     */
    function tap(value, interceptor) {
      interceptor(value);
      return value;
    }

    /**
     * This method is like `_.tap` except that it returns the result of `interceptor`.
     * The purpose of this method is to "pass thru" values replacing intermediate
     * results in a method chain sequence.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Seq
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @returns {*} Returns the result of `interceptor`.
     * @example
     *
     * _('  abc  ')
     *  .chain()
     *  .trim()
     *  .thru(function(value) {
     *    return [value];
     *  })
     *  .value();
     * // => ['abc']
     */
    function thru(value, interceptor) {
      return interceptor(value);
    }

    /**
     * This method is the wrapper version of `_.at`.
     *
     * @name at
     * @memberOf _
     * @since 1.0.0
     * @category Seq
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
     *
     * _(object).at(['a[0].b.c', 'a[1]']).value();
     * // => [3, 4]
     */
    var wrapperAt = flatRest(function(paths) {
      var length = paths.length,
          start = length ? paths[0] : 0,
          value = this.__wrapped__,
          interceptor = function(object) { return baseAt(object, paths); };

      if (length > 1 || this.__actions__.length ||
          !(value instanceof LazyWrapper) || !isIndex(start)) {
        return this.thru(interceptor);
      }
      value = value.slice(start, +start + (length ? 1 : 0));
      value.__actions__.push({
        'func': thru,
        'args': [interceptor],
        'thisArg': undefined
      });
      return new LodashWrapper(value, this.__chain__).thru(function(array) {
        if (length && !array.length) {
          array.push(undefined);
        }
        return array;
      });
    });

    /**
     * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
     *
     * @name chain
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 }
     * ];
     *
     * // A sequence without explicit chaining.
     * _(users).head();
     * // => { 'user': 'barney', 'age': 36 }
     *
     * // A sequence with explicit chaining.
     * _(users)
     *   .chain()
     *   .head()
     *   .pick('user')
     *   .value();
     * // => { 'user': 'barney' }
     */
    function wrapperChain() {
      return chain(this);
    }

    /**
     * Executes the chain sequence and returns the wrapped result.
     *
     * @name commit
     * @memberOf _
     * @since 3.2.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2];
     * var wrapped = _(array).push(3);
     *
     * console.log(array);
     * // => [1, 2]
     *
     * wrapped = wrapped.commit();
     * console.log(array);
     * // => [1, 2, 3]
     *
     * wrapped.last();
     * // => 3
     *
     * console.log(array);
     * // => [1, 2, 3]
     */
    function wrapperCommit() {
      return new LodashWrapper(this.value(), this.__chain__);
    }

    /**
     * Gets the next value on a wrapped object following the
     * [iterator protocol](https://mdn.io/iteration_protocols#iterator).
     *
     * @name next
     * @memberOf _
     * @since 4.0.0
     * @category Seq
     * @returns {Object} Returns the next iterator value.
     * @example
     *
     * var wrapped = _([1, 2]);
     *
     * wrapped.next();
     * // => { 'done': false, 'value': 1 }
     *
     * wrapped.next();
     * // => { 'done': false, 'value': 2 }
     *
     * wrapped.next();
     * // => { 'done': true, 'value': undefined }
     */
    function wrapperNext() {
      if (this.__values__ === undefined) {
        this.__values__ = toArray(this.value());
      }
      var done = this.__index__ >= this.__values__.length,
          value = done ? undefined : this.__values__[this.__index__++];

      return { 'done': done, 'value': value };
    }

    /**
     * Enables the wrapper to be iterable.
     *
     * @name Symbol.iterator
     * @memberOf _
     * @since 4.0.0
     * @category Seq
     * @returns {Object} Returns the wrapper object.
     * @example
     *
     * var wrapped = _([1, 2]);
     *
     * wrapped[Symbol.iterator]() === wrapped;
     * // => true
     *
     * Array.from(wrapped);
     * // => [1, 2]
     */
    function wrapperToIterator() {
      return this;
    }

    /**
     * Creates a clone of the chain sequence planting `value` as the wrapped value.
     *
     * @name plant
     * @memberOf _
     * @since 3.2.0
     * @category Seq
     * @param {*} value The value to plant.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var wrapped = _([1, 2]).map(square);
     * var other = wrapped.plant([3, 4]);
     *
     * other.value();
     * // => [9, 16]
     *
     * wrapped.value();
     * // => [1, 4]
     */
    function wrapperPlant(value) {
      var result,
          parent = this;

      while (parent instanceof baseLodash) {
        var clone = wrapperClone(parent);
        clone.__index__ = 0;
        clone.__values__ = undefined;
        if (result) {
          previous.__wrapped__ = clone;
        } else {
          result = clone;
        }
        var previous = clone;
        parent = parent.__wrapped__;
      }
      previous.__wrapped__ = value;
      return result;
    }

    /**
     * This method is the wrapper version of `_.reverse`.
     *
     * **Note:** This method mutates the wrapped array.
     *
     * @name reverse
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _(array).reverse().value()
     * // => [3, 2, 1]
     *
     * console.log(array);
     * // => [3, 2, 1]
     */
    function wrapperReverse() {
      var value = this.__wrapped__;
      if (value instanceof LazyWrapper) {
        var wrapped = value;
        if (this.__actions__.length) {
          wrapped = new LazyWrapper(this);
        }
        wrapped = wrapped.reverse();
        wrapped.__actions__.push({
          'func': thru,
          'args': [reverse],
          'thisArg': undefined
        });
        return new LodashWrapper(wrapped, this.__chain__);
      }
      return this.thru(reverse);
    }

    /**
     * Executes the chain sequence to resolve the unwrapped value.
     *
     * @name value
     * @memberOf _
     * @since 0.1.0
     * @alias toJSON, valueOf
     * @category Seq
     * @returns {*} Returns the resolved unwrapped value.
     * @example
     *
     * _([1, 2, 3]).value();
     * // => [1, 2, 3]
     */
    function wrapperValue() {
      return baseWrapperValue(this.__wrapped__, this.__actions__);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The corresponding value of
     * each key is the number of times the key was returned by `iteratee`. The
     * iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.countBy([6.1, 4.2, 6.3], Math.floor);
     * // => { '4': 1, '6': 2 }
     *
     * // The `_.property` iteratee shorthand.
     * _.countBy(['one', 'two', 'three'], 'length');
     * // => { '3': 2, '5': 1 }
     */
    var countBy = createAggregator(function(result, value, key) {
      if (hasOwnProperty.call(result, key)) {
        ++result[key];
      } else {
        baseAssignValue(result, key, 1);
      }
    });

    /**
     * Checks if `predicate` returns truthy for **all** elements of `collection`.
     * Iteration is stopped once `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index|key, collection).
     *
     * **Note:** This method returns `true` for
     * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
     * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
     * elements of empty collections.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`.
     * @example
     *
     * _.every([true, 1, null, 'yes'], Boolean);
     * // => false
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.every(users, { 'user': 'barney', 'active': false });
     * // => false
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.every(users, ['active', false]);
     * // => true
     *
     * // The `_.property` iteratee shorthand.
     * _.every(users, 'active');
     * // => false
     */
    function every(collection, predicate, guard) {
      var func = isArray(collection) ? arrayEvery : baseEvery;
      if (guard && isIterateeCall(collection, predicate, guard)) {
        predicate = undefined;
      }
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Iterates over elements of `collection`, returning an array of all elements
     * `predicate` returns truthy for. The predicate is invoked with three
     * arguments: (value, index|key, collection).
     *
     * **Note:** Unlike `_.remove`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     * @see _.reject
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * _.filter(users, function(o) { return !o.active; });
     * // => objects for ['fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.filter(users, { 'age': 36, 'active': true });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.filter(users, ['active', false]);
     * // => objects for ['fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.filter(users, 'active');
     * // => objects for ['barney']
     *
     * // Combining several predicates using `_.overEvery` or `_.overSome`.
     * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));
     * // => objects for ['fred', 'barney']
     */
    function filter(collection, predicate) {
      var func = isArray(collection) ? arrayFilter : baseFilter;
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Iterates over elements of `collection`, returning the first element
     * `predicate` returns truthy for. The predicate is invoked with three
     * arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': true },
     *   { 'user': 'fred',    'age': 40, 'active': false },
     *   { 'user': 'pebbles', 'age': 1,  'active': true }
     * ];
     *
     * _.find(users, function(o) { return o.age < 40; });
     * // => object for 'barney'
     *
     * // The `_.matches` iteratee shorthand.
     * _.find(users, { 'age': 1, 'active': true });
     * // => object for 'pebbles'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.find(users, ['active', false]);
     * // => object for 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.find(users, 'active');
     * // => object for 'barney'
     */
    var find = createFind(findIndex);

    /**
     * This method is like `_.find` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=collection.length-1] The index to search from.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * _.findLast([1, 2, 3, 4], function(n) {
     *   return n % 2 == 1;
     * });
     * // => 3
     */
    var findLast = createFind(findLastIndex);

    /**
     * Creates a flattened array of values by running each element in `collection`
     * thru `iteratee` and flattening the mapped results. The iteratee is invoked
     * with three arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [n, n];
     * }
     *
     * _.flatMap([1, 2], duplicate);
     * // => [1, 1, 2, 2]
     */
    function flatMap(collection, iteratee) {
      return baseFlatten(map(collection, iteratee), 1);
    }

    /**
     * This method is like `_.flatMap` except that it recursively flattens the
     * mapped results.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [[[n, n]]];
     * }
     *
     * _.flatMapDeep([1, 2], duplicate);
     * // => [1, 1, 2, 2]
     */
    function flatMapDeep(collection, iteratee) {
      return baseFlatten(map(collection, iteratee), INFINITY);
    }

    /**
     * This method is like `_.flatMap` except that it recursively flattens the
     * mapped results up to `depth` times.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {number} [depth=1] The maximum recursion depth.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [[[n, n]]];
     * }
     *
     * _.flatMapDepth([1, 2], duplicate, 2);
     * // => [[1, 1], [2, 2]]
     */
    function flatMapDepth(collection, iteratee, depth) {
      depth = depth === undefined ? 1 : toInteger(depth);
      return baseFlatten(map(collection, iteratee), depth);
    }

    /**
     * Iterates over elements of `collection` and invokes `iteratee` for each element.
     * The iteratee is invoked with three arguments: (value, index|key, collection).
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * **Note:** As with other "Collections" methods, objects with a "length"
     * property are iterated like arrays. To avoid this behavior use `_.forIn`
     * or `_.forOwn` for object iteration.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @alias each
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     * @see _.forEachRight
     * @example
     *
     * _.forEach([1, 2], function(value) {
     *   console.log(value);
     * });
     * // => Logs `1` then `2`.
     *
     * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a' then 'b' (iteration order is not guaranteed).
     */
    function forEach(collection, iteratee) {
      var func = isArray(collection) ? arrayEach : baseEach;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.forEach` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @alias eachRight
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     * @see _.forEach
     * @example
     *
     * _.forEachRight([1, 2], function(value) {
     *   console.log(value);
     * });
     * // => Logs `2` then `1`.
     */
    function forEachRight(collection, iteratee) {
      var func = isArray(collection) ? arrayEachRight : baseEachRight;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The order of grouped values
     * is determined by the order they occur in `collection`. The corresponding
     * value of each key is an array of elements responsible for generating the
     * key. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.groupBy([6.1, 4.2, 6.3], Math.floor);
     * // => { '4': [4.2], '6': [6.1, 6.3] }
     *
     * // The `_.property` iteratee shorthand.
     * _.groupBy(['one', 'two', 'three'], 'length');
     * // => { '3': ['one', 'two'], '5': ['three'] }
     */
    var groupBy = createAggregator(function(result, value, key) {
      if (hasOwnProperty.call(result, key)) {
        result[key].push(value);
      } else {
        baseAssignValue(result, key, [value]);
      }
    });

    /**
     * Checks if `value` is in `collection`. If `collection` is a string, it's
     * checked for a substring of `value`, otherwise
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * is used for equality comparisons. If `fromIndex` is negative, it's used as
     * the offset from the end of `collection`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object|string} collection The collection to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=0] The index to search from.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
     * @returns {boolean} Returns `true` if `value` is found, else `false`.
     * @example
     *
     * _.includes([1, 2, 3], 1);
     * // => true
     *
     * _.includes([1, 2, 3], 1, 2);
     * // => false
     *
     * _.includes({ 'a': 1, 'b': 2 }, 1);
     * // => true
     *
     * _.includes('abcd', 'bc');
     * // => true
     */
    function includes(collection, value, fromIndex, guard) {
      collection = isArrayLike(collection) ? collection : values(collection);
      fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;

      var length = collection.length;
      if (fromIndex < 0) {
        fromIndex = nativeMax(length + fromIndex, 0);
      }
      return isString(collection)
        ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
        : (!!length && baseIndexOf(collection, value, fromIndex) > -1);
    }

    /**
     * Invokes the method at `path` of each element in `collection`, returning
     * an array of the results of each invoked method. Any additional arguments
     * are provided to each invoked method. If `path` is a function, it's invoked
     * for, and `this` bound to, each element in `collection`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Array|Function|string} path The path of the method to invoke or
     *  the function invoked per iteration.
     * @param {...*} [args] The arguments to invoke each method with.
     * @returns {Array} Returns the array of results.
     * @example
     *
     * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
     * // => [[1, 5, 7], [1, 2, 3]]
     *
     * _.invokeMap([123, 456], String.prototype.split, '');
     * // => [['1', '2', '3'], ['4', '5', '6']]
     */
    var invokeMap = baseRest(function(collection, path, args) {
      var index = -1,
          isFunc = typeof path == 'function',
          result = isArrayLike(collection) ? Array(collection.length) : [];

      baseEach(collection, function(value) {
        result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
      });
      return result;
    });

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The corresponding value of
     * each key is the last element responsible for generating the key. The
     * iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * var array = [
     *   { 'dir': 'left', 'code': 97 },
     *   { 'dir': 'right', 'code': 100 }
     * ];
     *
     * _.keyBy(array, function(o) {
     *   return String.fromCharCode(o.code);
     * });
     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
     *
     * _.keyBy(array, 'dir');
     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
     */
    var keyBy = createAggregator(function(result, value, key) {
      baseAssignValue(result, key, value);
    });

    /**
     * Creates an array of values by running each element in `collection` thru
     * `iteratee`. The iteratee is invoked with three arguments:
     * (value, index|key, collection).
     *
     * Many lodash methods are guarded to work as iteratees for methods like
     * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
     *
     * The guarded methods are:
     * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
     * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
     * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
     * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * _.map([4, 8], square);
     * // => [16, 64]
     *
     * _.map({ 'a': 4, 'b': 8 }, square);
     * // => [16, 64] (iteration order is not guaranteed)
     *
     * var users = [
     *   { 'user': 'barney' },
     *   { 'user': 'fred' }
     * ];
     *
     * // The `_.property` iteratee shorthand.
     * _.map(users, 'user');
     * // => ['barney', 'fred']
     */
    function map(collection, iteratee) {
      var func = isArray(collection) ? arrayMap : baseMap;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.sortBy` except that it allows specifying the sort
     * orders of the iteratees to sort by. If `orders` is unspecified, all values
     * are sorted in ascending order. Otherwise, specify an order of "desc" for
     * descending or "asc" for ascending sort order of corresponding values.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
     *  The iteratees to sort by.
     * @param {string[]} [orders] The sort orders of `iteratees`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
     * @returns {Array} Returns the new sorted array.
     * @example
     *
     * var users = [
     *   { 'user': 'fred',   'age': 48 },
     *   { 'user': 'barney', 'age': 34 },
     *   { 'user': 'fred',   'age': 40 },
     *   { 'user': 'barney', 'age': 36 }
     * ];
     *
     * // Sort by `user` in ascending order and by `age` in descending order.
     * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
     */
    function orderBy(collection, iteratees, orders, guard) {
      if (collection == null) {
        return [];
      }
      if (!isArray(iteratees)) {
        iteratees = iteratees == null ? [] : [iteratees];
      }
      orders = guard ? undefined : orders;
      if (!isArray(orders)) {
        orders = orders == null ? [] : [orders];
      }
      return baseOrderBy(collection, iteratees, orders);
    }

    /**
     * Creates an array of elements split into two groups, the first of which
     * contains elements `predicate` returns truthy for, the second of which
     * contains elements `predicate` returns falsey for. The predicate is
     * invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the array of grouped elements.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': false },
     *   { 'user': 'fred',    'age': 40, 'active': true },
     *   { 'user': 'pebbles', 'age': 1,  'active': false }
     * ];
     *
     * _.partition(users, function(o) { return o.active; });
     * // => objects for [['fred'], ['barney', 'pebbles']]
     *
     * // The `_.matches` iteratee shorthand.
     * _.partition(users, { 'age': 1, 'active': false });
     * // => objects for [['pebbles'], ['barney', 'fred']]
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.partition(users, ['active', false]);
     * // => objects for [['barney', 'pebbles'], ['fred']]
     *
     * // The `_.property` iteratee shorthand.
     * _.partition(users, 'active');
     * // => objects for [['fred'], ['barney', 'pebbles']]
     */
    var partition = createAggregator(function(result, value, key) {
      result[key ? 0 : 1].push(value);
    }, function() { return [[], []]; });

    /**
     * Reduces `collection` to a value which is the accumulated result of running
     * each element in `collection` thru `iteratee`, where each successive
     * invocation is supplied the return value of the previous. If `accumulator`
     * is not given, the first element of `collection` is used as the initial
     * value. The iteratee is invoked with four arguments:
     * (accumulator, value, index|key, collection).
     *
     * Many lodash methods are guarded to work as iteratees for methods like
     * `_.reduce`, `_.reduceRight`, and `_.transform`.
     *
     * The guarded methods are:
     * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
     * and `sortBy`
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @returns {*} Returns the accumulated value.
     * @see _.reduceRight
     * @example
     *
     * _.reduce([1, 2], function(sum, n) {
     *   return sum + n;
     * }, 0);
     * // => 3
     *
     * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
     *   (result[value] || (result[value] = [])).push(key);
     *   return result;
     * }, {});
     * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
     */
    function reduce(collection, iteratee, accumulator) {
      var func = isArray(collection) ? arrayReduce : baseReduce,
          initAccum = arguments.length < 3;

      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
    }

    /**
     * This method is like `_.reduce` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @returns {*} Returns the accumulated value.
     * @see _.reduce
     * @example
     *
     * var array = [[0, 1], [2, 3], [4, 5]];
     *
     * _.reduceRight(array, function(flattened, other) {
     *   return flattened.concat(other);
     * }, []);
     * // => [4, 5, 2, 3, 0, 1]
     */
    function reduceRight(collection, iteratee, accumulator) {
      var func = isArray(collection) ? arrayReduceRight : baseReduce,
          initAccum = arguments.length < 3;

      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
    }

    /**
     * The opposite of `_.filter`; this method returns the elements of `collection`
     * that `predicate` does **not** return truthy for.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     * @see _.filter
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': true }
     * ];
     *
     * _.reject(users, function(o) { return !o.active; });
     * // => objects for ['fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.reject(users, { 'age': 40, 'active': true });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.reject(users, ['active', false]);
     * // => objects for ['fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.reject(users, 'active');
     * // => objects for ['barney']
     */
    function reject(collection, predicate) {
      var func = isArray(collection) ? arrayFilter : baseFilter;
      return func(collection, negate(getIteratee(predicate, 3)));
    }

    /**
     * Gets a random element from `collection`.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to sample.
     * @returns {*} Returns the random element.
     * @example
     *
     * _.sample([1, 2, 3, 4]);
     * // => 2
     */
    function sample(collection) {
      var func = isArray(collection) ? arraySample : baseSample;
      return func(collection);
    }

    /**
     * Gets `n` random elements at unique keys from `collection` up to the
     * size of `collection`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to sample.
     * @param {number} [n=1] The number of elements to sample.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the random elements.
     * @example
     *
     * _.sampleSize([1, 2, 3], 2);
     * // => [3, 1]
     *
     * _.sampleSize([1, 2, 3], 4);
     * // => [2, 3, 1]
     */
    function sampleSize(collection, n, guard) {
      if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
        n = 1;
      } else {
        n = toInteger(n);
      }
      var func = isArray(collection) ? arraySampleSize : baseSampleSize;
      return func(collection, n);
    }

    /**
     * Creates an array of shuffled values, using a version of the
     * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to shuffle.
     * @returns {Array} Returns the new shuffled array.
     * @example
     *
     * _.shuffle([1, 2, 3, 4]);
     * // => [4, 1, 3, 2]
     */
    function shuffle(collection) {
      var func = isArray(collection) ? arrayShuffle : baseShuffle;
      return func(collection);
    }

    /**
     * Gets the size of `collection` by returning its length for array-like
     * values or the number of own enumerable string keyed properties for objects.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object|string} collection The collection to inspect.
     * @returns {number} Returns the collection size.
     * @example
     *
     * _.size([1, 2, 3]);
     * // => 3
     *
     * _.size({ 'a': 1, 'b': 2 });
     * // => 2
     *
     * _.size('pebbles');
     * // => 7
     */
    function size(collection) {
      if (collection == null) {
        return 0;
      }
      if (isArrayLike(collection)) {
        return isString(collection) ? stringSize(collection) : collection.length;
      }
      var tag = getTag(collection);
      if (tag == mapTag || tag == setTag) {
        return collection.size;
      }
      return baseKeys(collection).length;
    }

    /**
     * Checks if `predicate` returns truthy for **any** element of `collection`.
     * Iteration is stopped once `predicate` returns truthy. The predicate is
     * invoked with three arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     * @example
     *
     * _.some([null, 0, 'yes', false], Boolean);
     * // => true
     *
     * var users = [
     *   { 'user': 'barney', 'active': true },
     *   { 'user': 'fred',   'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.some(users, { 'user': 'barney', 'active': false });
     * // => false
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.some(users, ['active', false]);
     * // => true
     *
     * // The `_.property` iteratee shorthand.
     * _.some(users, 'active');
     * // => true
     */
    function some(collection, predicate, guard) {
      var func = isArray(collection) ? arraySome : baseSome;
      if (guard && isIterateeCall(collection, predicate, guard)) {
        predicate = undefined;
      }
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Creates an array of elements, sorted in ascending order by the results of
     * running each element in a collection thru each iteratee. This method
     * performs a stable sort, that is, it preserves the original sort order of
     * equal elements. The iteratees are invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {...(Function|Function[])} [iteratees=[_.identity]]
     *  The iteratees to sort by.
     * @returns {Array} Returns the new sorted array.
     * @example
     *
     * var users = [
     *   { 'user': 'fred',   'age': 48 },
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 30 },
     *   { 'user': 'barney', 'age': 34 }
     * ];
     *
     * _.sortBy(users, [function(o) { return o.user; }]);
     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]
     *
     * _.sortBy(users, ['user', 'age']);
     * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]
     */
    var sortBy = baseRest(function(collection, iteratees) {
      if (collection == null) {
        return [];
      }
      var length = iteratees.length;
      if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
        iteratees = [];
      } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
        iteratees = [iteratees[0]];
      }
      return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
    });

    /*------------------------------------------------------------------------*/

    /**
     * Gets the timestamp of the number of milliseconds that have elapsed since
     * the Unix epoch (1 January 1970 00:00:00 UTC).
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Date
     * @returns {number} Returns the timestamp.
     * @example
     *
     * _.defer(function(stamp) {
     *   console.log(_.now() - stamp);
     * }, _.now());
     * // => Logs the number of milliseconds it took for the deferred invocation.
     */
    var now = ctxNow || function() {
      return root.Date.now();
    };

    /*------------------------------------------------------------------------*/

    /**
     * The opposite of `_.before`; this method creates a function that invokes
     * `func` once it's called `n` or more times.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {number} n The number of calls before `func` is invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var saves = ['profile', 'settings'];
     *
     * var done = _.after(saves.length, function() {
     *   console.log('done saving!');
     * });
     *
     * _.forEach(saves, function(type) {
     *   asyncSave({ 'type': type, 'complete': done });
     * });
     * // => Logs 'done saving!' after the two async saves have completed.
     */
    function after(n, func) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      n = toInteger(n);
      return function() {
        if (--n < 1) {
          return func.apply(this, arguments);
        }
      };
    }

    /**
     * Creates a function that invokes `func`, with up to `n` arguments,
     * ignoring any additional arguments.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to cap arguments for.
     * @param {number} [n=func.length] The arity cap.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new capped function.
     * @example
     *
     * _.map(['6', '8', '10'], _.ary(parseInt, 1));
     * // => [6, 8, 10]
     */
    function ary(func, n, guard) {
      n = guard ? undefined : n;
      n = (func && n == null) ? func.length : n;
      return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
    }

    /**
     * Creates a function that invokes `func`, with the `this` binding and arguments
     * of the created function, while it's called less than `n` times. Subsequent
     * calls to the created function return the result of the last `func` invocation.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {number} n The number of calls at which `func` is no longer invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * jQuery(element).on('click', _.before(5, addContactToList));
     * // => Allows adding up to 4 contacts to the list.
     */
    function before(n, func) {
      var result;
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      n = toInteger(n);
      return function() {
        if (--n > 0) {
          result = func.apply(this, arguments);
        }
        if (n <= 1) {
          func = undefined;
        }
        return result;
      };
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of `thisArg`
     * and `partials` prepended to the arguments it receives.
     *
     * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
     * may be used as a placeholder for partially applied arguments.
     *
     * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
     * property of bound functions.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to bind.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * function greet(greeting, punctuation) {
     *   return greeting + ' ' + this.user + punctuation;
     * }
     *
     * var object = { 'user': 'fred' };
     *
     * var bound = _.bind(greet, object, 'hi');
     * bound('!');
     * // => 'hi fred!'
     *
     * // Bound with placeholders.
     * var bound = _.bind(greet, object, _, '!');
     * bound('hi');
     * // => 'hi fred!'
     */
    var bind = baseRest(function(func, thisArg, partials) {
      var bitmask = WRAP_BIND_FLAG;
      if (partials.length) {
        var holders = replaceHolders(partials, getHolder(bind));
        bitmask |= WRAP_PARTIAL_FLAG;
      }
      return createWrap(func, bitmask, thisArg, partials, holders);
    });

    /**
     * Creates a function that invokes the method at `object[key]` with `partials`
     * prepended to the arguments it receives.
     *
     * This method differs from `_.bind` by allowing bound functions to reference
     * methods that may be redefined or don't yet exist. See
     * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
     * for more details.
     *
     * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * @static
     * @memberOf _
     * @since 0.10.0
     * @category Function
     * @param {Object} object The object to invoke the method on.
     * @param {string} key The key of the method.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * var object = {
     *   'user': 'fred',
     *   'greet': function(greeting, punctuation) {
     *     return greeting + ' ' + this.user + punctuation;
     *   }
     * };
     *
     * var bound = _.bindKey(object, 'greet', 'hi');
     * bound('!');
     * // => 'hi fred!'
     *
     * object.greet = function(greeting, punctuation) {
     *   return greeting + 'ya ' + this.user + punctuation;
     * };
     *
     * bound('!');
     * // => 'hiya fred!'
     *
     * // Bound with placeholders.
     * var bound = _.bindKey(object, 'greet', _, '!');
     * bound('hi');
     * // => 'hiya fred!'
     */
    var bindKey = baseRest(function(object, key, partials) {
      var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
      if (partials.length) {
        var holders = replaceHolders(partials, getHolder(bindKey));
        bitmask |= WRAP_PARTIAL_FLAG;
      }
      return createWrap(key, bitmask, object, partials, holders);
    });

    /**
     * Creates a function that accepts arguments of `func` and either invokes
     * `func` returning its result, if at least `arity` number of arguments have
     * been provided, or returns a function that accepts the remaining `func`
     * arguments, and so on. The arity of `func` may be specified if `func.length`
     * is not sufficient.
     *
     * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
     * may be used as a placeholder for provided arguments.
     *
     * **Note:** This method doesn't set the "length" property of curried functions.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Function
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var abc = function(a, b, c) {
     *   return [a, b, c];
     * };
     *
     * var curried = _.curry(abc);
     *
     * curried(1)(2)(3);
     * // => [1, 2, 3]
     *
     * curried(1, 2)(3);
     * // => [1, 2, 3]
     *
     * curried(1, 2, 3);
     * // => [1, 2, 3]
     *
     * // Curried with placeholders.
     * curried(1)(_, 3)(2);
     * // => [1, 2, 3]
     */
    function curry(func, arity, guard) {
      arity = guard ? undefined : arity;
      var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
      result.placeholder = curry.placeholder;
      return result;
    }

    /**
     * This method is like `_.curry` except that arguments are applied to `func`
     * in the manner of `_.partialRight` instead of `_.partial`.
     *
     * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for provided arguments.
     *
     * **Note:** This method doesn't set the "length" property of curried functions.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var abc = function(a, b, c) {
     *   return [a, b, c];
     * };
     *
     * var curried = _.curryRight(abc);
     *
     * curried(3)(2)(1);
     * // => [1, 2, 3]
     *
     * curried(2, 3)(1);
     * // => [1, 2, 3]
     *
     * curried(1, 2, 3);
     * // => [1, 2, 3]
     *
     * // Curried with placeholders.
     * curried(3)(1, _)(2);
     * // => [1, 2, 3]
     */
    function curryRight(func, arity, guard) {
      arity = guard ? undefined : arity;
      var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
      result.placeholder = curryRight.placeholder;
      return result;
    }

    /**
     * Creates a debounced function that delays invoking `func` until after `wait`
     * milliseconds have elapsed since the last time the debounced function was
     * invoked. The debounced function comes with a `cancel` method to cancel
     * delayed `func` invocations and a `flush` method to immediately invoke them.
     * Provide `options` to indicate whether `func` should be invoked on the
     * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
     * with the last arguments provided to the debounced function. Subsequent
     * calls to the debounced function return the result of the last `func`
     * invocation.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is
     * invoked on the trailing edge of the timeout only if the debounced function
     * is invoked more than once during the `wait` timeout.
     *
     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
     *
     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
     * for details over the differences between `_.debounce` and `_.throttle`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to debounce.
     * @param {number} [wait=0] The number of milliseconds to delay.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.leading=false]
     *  Specify invoking on the leading edge of the timeout.
     * @param {number} [options.maxWait]
     *  The maximum time `func` is allowed to be delayed before it's invoked.
     * @param {boolean} [options.trailing=true]
     *  Specify invoking on the trailing edge of the timeout.
     * @returns {Function} Returns the new debounced function.
     * @example
     *
     * // Avoid costly calculations while the window size is in flux.
     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
     *
     * // Invoke `sendMail` when clicked, debouncing subsequent calls.
     * jQuery(element).on('click', _.debounce(sendMail, 300, {
     *   'leading': true,
     *   'trailing': false
     * }));
     *
     * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
     * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
     * var source = new EventSource('/stream');
     * jQuery(source).on('message', debounced);
     *
     * // Cancel the trailing debounced invocation.
     * jQuery(window).on('popstate', debounced.cancel);
     */
    function debounce(func, wait, options) {
      var lastArgs,
          lastThis,
          maxWait,
          result,
          timerId,
          lastCallTime,
          lastInvokeTime = 0,
          leading = false,
          maxing = false,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      wait = toNumber(wait) || 0;
      if (isObject(options)) {
        leading = !!options.leading;
        maxing = 'maxWait' in options;
        maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
        trailing = 'trailing' in options ? !!options.trailing : trailing;
      }

      function invokeFunc(time) {
        var args = lastArgs,
            thisArg = lastThis;

        lastArgs = lastThis = undefined;
        lastInvokeTime = time;
        result = func.apply(thisArg, args);
        return result;
      }

      function leadingEdge(time) {
        // Reset any `maxWait` timer.
        lastInvokeTime = time;
        // Start the timer for the trailing edge.
        timerId = setTimeout(timerExpired, wait);
        // Invoke the leading edge.
        return leading ? invokeFunc(time) : result;
      }

      function remainingWait(time) {
        var timeSinceLastCall = time - lastCallTime,
            timeSinceLastInvoke = time - lastInvokeTime,
            timeWaiting = wait - timeSinceLastCall;

        return maxing
          ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
          : timeWaiting;
      }

      function shouldInvoke(time) {
        var timeSinceLastCall = time - lastCallTime,
            timeSinceLastInvoke = time - lastInvokeTime;

        // Either this is the first call, activity has stopped and we're at the
        // trailing edge, the system time has gone backwards and we're treating
        // it as the trailing edge, or we've hit the `maxWait` limit.
        return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
          (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
      }

      function timerExpired() {
        var time = now();
        if (shouldInvoke(time)) {
          return trailingEdge(time);
        }
        // Restart the timer.
        timerId = setTimeout(timerExpired, remainingWait(time));
      }

      function trailingEdge(time) {
        timerId = undefined;

        // Only invoke if we have `lastArgs` which means `func` has been
        // debounced at least once.
        if (trailing && lastArgs) {
          return invokeFunc(time);
        }
        lastArgs = lastThis = undefined;
        return result;
      }

      function cancel() {
        if (timerId !== undefined) {
          clearTimeout(timerId);
        }
        lastInvokeTime = 0;
        lastArgs = lastCallTime = lastThis = timerId = undefined;
      }

      function flush() {
        return timerId === undefined ? result : trailingEdge(now());
      }

      function debounced() {
        var time = now(),
            isInvoking = shouldInvoke(time);

        lastArgs = arguments;
        lastThis = this;
        lastCallTime = time;

        if (isInvoking) {
          if (timerId === undefined) {
            return leadingEdge(lastCallTime);
          }
          if (maxing) {
            // Handle invocations in a tight loop.
            clearTimeout(timerId);
            timerId = setTimeout(timerExpired, wait);
            return invokeFunc(lastCallTime);
          }
        }
        if (timerId === undefined) {
          timerId = setTimeout(timerExpired, wait);
        }
        return result;
      }
      debounced.cancel = cancel;
      debounced.flush = flush;
      return debounced;
    }

    /**
     * Defers invoking the `func` until the current call stack has cleared. Any
     * additional arguments are provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to defer.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.defer(function(text) {
     *   console.log(text);
     * }, 'deferred');
     * // => Logs 'deferred' after one millisecond.
     */
    var defer = baseRest(function(func, args) {
      return baseDelay(func, 1, args);
    });

    /**
     * Invokes `func` after `wait` milliseconds. Any additional arguments are
     * provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.delay(function(text) {
     *   console.log(text);
     * }, 1000, 'later');
     * // => Logs 'later' after one second.
     */
    var delay = baseRest(function(func, wait, args) {
      return baseDelay(func, toNumber(wait) || 0, args);
    });

    /**
     * Creates a function that invokes `func` with arguments reversed.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to flip arguments for.
     * @returns {Function} Returns the new flipped function.
     * @example
     *
     * var flipped = _.flip(function() {
     *   return _.toArray(arguments);
     * });
     *
     * flipped('a', 'b', 'c', 'd');
     * // => ['d', 'c', 'b', 'a']
     */
    function flip(func) {
      return createWrap(func, WRAP_FLIP_FLAG);
    }

    /**
     * Creates a function that memoizes the result of `func`. If `resolver` is
     * provided, it determines the cache key for storing the result based on the
     * arguments provided to the memoized function. By default, the first argument
     * provided to the memoized function is used as the map cache key. The `func`
     * is invoked with the `this` binding of the memoized function.
     *
     * **Note:** The cache is exposed as the `cache` property on the memoized
     * function. Its creation may be customized by replacing the `_.memoize.Cache`
     * constructor with one whose instances implement the
     * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
     * method interface of `clear`, `delete`, `get`, `has`, and `set`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to have its output memoized.
     * @param {Function} [resolver] The function to resolve the cache key.
     * @returns {Function} Returns the new memoized function.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     * var other = { 'c': 3, 'd': 4 };
     *
     * var values = _.memoize(_.values);
     * values(object);
     * // => [1, 2]
     *
     * values(other);
     * // => [3, 4]
     *
     * object.a = 2;
     * values(object);
     * // => [1, 2]
     *
     * // Modify the result cache.
     * values.cache.set(object, ['a', 'b']);
     * values(object);
     * // => ['a', 'b']
     *
     * // Replace `_.memoize.Cache`.
     * _.memoize.Cache = WeakMap;
     */
    function memoize(func, resolver) {
      if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var memoized = function() {
        var args = arguments,
            key = resolver ? resolver.apply(this, args) : args[0],
            cache = memoized.cache;

        if (cache.has(key)) {
          return cache.get(key);
        }
        var result = func.apply(this, args);
        memoized.cache = cache.set(key, result) || cache;
        return result;
      };
      memoized.cache = new (memoize.Cache || MapCache);
      return memoized;
    }

    // Expose `MapCache`.
    memoize.Cache = MapCache;

    /**
     * Creates a function that negates the result of the predicate `func`. The
     * `func` predicate is invoked with the `this` binding and arguments of the
     * created function.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} predicate The predicate to negate.
     * @returns {Function} Returns the new negated function.
     * @example
     *
     * function isEven(n) {
     *   return n % 2 == 0;
     * }
     *
     * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
     * // => [1, 3, 5]
     */
    function negate(predicate) {
      if (typeof predicate != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return function() {
        var args = arguments;
        switch (args.length) {
          case 0: return !predicate.call(this);
          case 1: return !predicate.call(this, args[0]);
          case 2: return !predicate.call(this, args[0], args[1]);
          case 3: return !predicate.call(this, args[0], args[1], args[2]);
        }
        return !predicate.apply(this, args);
      };
    }

    /**
     * Creates a function that is restricted to invoking `func` once. Repeat calls
     * to the function return the value of the first invocation. The `func` is
     * invoked with the `this` binding and arguments of the created function.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var initialize = _.once(createApplication);
     * initialize();
     * initialize();
     * // => `createApplication` is invoked once
     */
    function once(func) {
      return before(2, func);
    }

    /**
     * Creates a function that invokes `func` with its arguments transformed.
     *
     * @static
     * @since 4.0.0
     * @memberOf _
     * @category Function
     * @param {Function} func The function to wrap.
     * @param {...(Function|Function[])} [transforms=[_.identity]]
     *  The argument transforms.
     * @returns {Function} Returns the new function.
     * @example
     *
     * function doubled(n) {
     *   return n * 2;
     * }
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var func = _.overArgs(function(x, y) {
     *   return [x, y];
     * }, [square, doubled]);
     *
     * func(9, 3);
     * // => [81, 6]
     *
     * func(10, 5);
     * // => [100, 10]
     */
    var overArgs = castRest(function(func, transforms) {
      transforms = (transforms.length == 1 && isArray(transforms[0]))
        ? arrayMap(transforms[0], baseUnary(getIteratee()))
        : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));

      var funcsLength = transforms.length;
      return baseRest(function(args) {
        var index = -1,
            length = nativeMin(args.length, funcsLength);

        while (++index < length) {
          args[index] = transforms[index].call(this, args[index]);
        }
        return apply(func, this, args);
      });
    });

    /**
     * Creates a function that invokes `func` with `partials` prepended to the
     * arguments it receives. This method is like `_.bind` except it does **not**
     * alter the `this` binding.
     *
     * The `_.partial.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * **Note:** This method doesn't set the "length" property of partially
     * applied functions.
     *
     * @static
     * @memberOf _
     * @since 0.2.0
     * @category Function
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * function greet(greeting, name) {
     *   return greeting + ' ' + name;
     * }
     *
     * var sayHelloTo = _.partial(greet, 'hello');
     * sayHelloTo('fred');
     * // => 'hello fred'
     *
     * // Partially applied with placeholders.
     * var greetFred = _.partial(greet, _, 'fred');
     * greetFred('hi');
     * // => 'hi fred'
     */
    var partial = baseRest(function(func, partials) {
      var holders = replaceHolders(partials, getHolder(partial));
      return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);
    });

    /**
     * This method is like `_.partial` except that partially applied arguments
     * are appended to the arguments it receives.
     *
     * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * **Note:** This method doesn't set the "length" property of partially
     * applied functions.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Function
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * function greet(greeting, name) {
     *   return greeting + ' ' + name;
     * }
     *
     * var greetFred = _.partialRight(greet, 'fred');
     * greetFred('hi');
     * // => 'hi fred'
     *
     * // Partially applied with placeholders.
     * var sayHelloTo = _.partialRight(greet, 'hello', _);
     * sayHelloTo('fred');
     * // => 'hello fred'
     */
    var partialRight = baseRest(function(func, partials) {
      var holders = replaceHolders(partials, getHolder(partialRight));
      return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);
    });

    /**
     * Creates a function that invokes `func` with arguments arranged according
     * to the specified `indexes` where the argument value at the first index is
     * provided as the first argument, the argument value at the second index is
     * provided as the second argument, and so on.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to rearrange arguments for.
     * @param {...(number|number[])} indexes The arranged argument indexes.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var rearged = _.rearg(function(a, b, c) {
     *   return [a, b, c];
     * }, [2, 0, 1]);
     *
     * rearged('b', 'c', 'a')
     * // => ['a', 'b', 'c']
     */
    var rearg = flatRest(function(func, indexes) {
      return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);
    });

    /**
     * Creates a function that invokes `func` with the `this` binding of the
     * created function and arguments from `start` and beyond provided as
     * an array.
     *
     * **Note:** This method is based on the
     * [rest parameter](https://mdn.io/rest_parameters).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var say = _.rest(function(what, names) {
     *   return what + ' ' + _.initial(names).join(', ') +
     *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
     * });
     *
     * say('hello', 'fred', 'barney', 'pebbles');
     * // => 'hello fred, barney, & pebbles'
     */
    function rest(func, start) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      start = start === undefined ? start : toInteger(start);
      return baseRest(func, start);
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of the
     * create function and an array of arguments much like
     * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
     *
     * **Note:** This method is based on the
     * [spread operator](https://mdn.io/spread_operator).
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Function
     * @param {Function} func The function to spread arguments over.
     * @param {number} [start=0] The start position of the spread.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var say = _.spread(function(who, what) {
     *   return who + ' says ' + what;
     * });
     *
     * say(['fred', 'hello']);
     * // => 'fred says hello'
     *
     * var numbers = Promise.all([
     *   Promise.resolve(40),
     *   Promise.resolve(36)
     * ]);
     *
     * numbers.then(_.spread(function(x, y) {
     *   return x + y;
     * }));
     * // => a Promise of 76
     */
    function spread(func, start) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      start = start == null ? 0 : nativeMax(toInteger(start), 0);
      return baseRest(function(args) {
        var array = args[start],
            otherArgs = castSlice(args, 0, start);

        if (array) {
          arrayPush(otherArgs, array);
        }
        return apply(func, this, otherArgs);
      });
    }

    /**
     * Creates a throttled function that only invokes `func` at most once per
     * every `wait` milliseconds. The throttled function comes with a `cancel`
     * method to cancel delayed `func` invocations and a `flush` method to
     * immediately invoke them. Provide `options` to indicate whether `func`
     * should be invoked on the leading and/or trailing edge of the `wait`
     * timeout. The `func` is invoked with the last arguments provided to the
     * throttled function. Subsequent calls to the throttled function return the
     * result of the last `func` invocation.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is
     * invoked on the trailing edge of the timeout only if the throttled function
     * is invoked more than once during the `wait` timeout.
     *
     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
     *
     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
     * for details over the differences between `_.throttle` and `_.debounce`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to throttle.
     * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.leading=true]
     *  Specify invoking on the leading edge of the timeout.
     * @param {boolean} [options.trailing=true]
     *  Specify invoking on the trailing edge of the timeout.
     * @returns {Function} Returns the new throttled function.
     * @example
     *
     * // Avoid excessively updating the position while scrolling.
     * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
     *
     * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
     * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
     * jQuery(element).on('click', throttled);
     *
     * // Cancel the trailing throttled invocation.
     * jQuery(window).on('popstate', throttled.cancel);
     */
    function throttle(func, wait, options) {
      var leading = true,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      if (isObject(options)) {
        leading = 'leading' in options ? !!options.leading : leading;
        trailing = 'trailing' in options ? !!options.trailing : trailing;
      }
      return debounce(func, wait, {
        'leading': leading,
        'maxWait': wait,
        'trailing': trailing
      });
    }

    /**
     * Creates a function that accepts up to one argument, ignoring any
     * additional arguments.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to cap arguments for.
     * @returns {Function} Returns the new capped function.
     * @example
     *
     * _.map(['6', '8', '10'], _.unary(parseInt));
     * // => [6, 8, 10]
     */
    function unary(func) {
      return ary(func, 1);
    }

    /**
     * Creates a function that provides `value` to `wrapper` as its first
     * argument. Any additional arguments provided to the function are appended
     * to those provided to the `wrapper`. The wrapper is invoked with the `this`
     * binding of the created function.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {*} value The value to wrap.
     * @param {Function} [wrapper=identity] The wrapper function.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var p = _.wrap(_.escape, function(func, text) {
     *   return '<p>' + func(text) + '</p>';
     * });
     *
     * p('fred, barney, & pebbles');
     * // => '<p>fred, barney, &amp; pebbles</p>'
     */
    function wrap(value, wrapper) {
      return partial(castFunction(wrapper), value);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Casts `value` as an array if it's not one.
     *
     * @static
     * @memberOf _
     * @since 4.4.0
     * @category Lang
     * @param {*} value The value to inspect.
     * @returns {Array} Returns the cast array.
     * @example
     *
     * _.castArray(1);
     * // => [1]
     *
     * _.castArray({ 'a': 1 });
     * // => [{ 'a': 1 }]
     *
     * _.castArray('abc');
     * // => ['abc']
     *
     * _.castArray(null);
     * // => [null]
     *
     * _.castArray(undefined);
     * // => [undefined]
     *
     * _.castArray();
     * // => []
     *
     * var array = [1, 2, 3];
     * console.log(_.castArray(array) === array);
     * // => true
     */
    function castArray() {
      if (!arguments.length) {
        return [];
      }
      var value = arguments[0];
      return isArray(value) ? value : [value];
    }

    /**
     * Creates a shallow clone of `value`.
     *
     * **Note:** This method is loosely based on the
     * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
     * and supports cloning arrays, array buffers, booleans, date objects, maps,
     * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
     * arrays. The own enumerable properties of `arguments` objects are cloned
     * as plain objects. An empty object is returned for uncloneable values such
     * as error objects, functions, DOM nodes, and WeakMaps.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to clone.
     * @returns {*} Returns the cloned value.
     * @see _.cloneDeep
     * @example
     *
     * var objects = [{ 'a': 1 }, { 'b': 2 }];
     *
     * var shallow = _.clone(objects);
     * console.log(shallow[0] === objects[0]);
     * // => true
     */
    function clone(value) {
      return baseClone(value, CLONE_SYMBOLS_FLAG);
    }

    /**
     * This method is like `_.clone` except that it accepts `customizer` which
     * is invoked to produce the cloned value. If `customizer` returns `undefined`,
     * cloning is handled by the method instead. The `customizer` is invoked with
     * up to four arguments; (value [, index|key, object, stack]).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to clone.
     * @param {Function} [customizer] The function to customize cloning.
     * @returns {*} Returns the cloned value.
     * @see _.cloneDeepWith
     * @example
     *
     * function customizer(value) {
     *   if (_.isElement(value)) {
     *     return value.cloneNode(false);
     *   }
     * }
     *
     * var el = _.cloneWith(document.body, customizer);
     *
     * console.log(el === document.body);
     * // => false
     * console.log(el.nodeName);
     * // => 'BODY'
     * console.log(el.childNodes.length);
     * // => 0
     */
    function cloneWith(value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
    }

    /**
     * This method is like `_.clone` except that it recursively clones `value`.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Lang
     * @param {*} value The value to recursively clone.
     * @returns {*} Returns the deep cloned value.
     * @see _.clone
     * @example
     *
     * var objects = [{ 'a': 1 }, { 'b': 2 }];
     *
     * var deep = _.cloneDeep(objects);
     * console.log(deep[0] === objects[0]);
     * // => false
     */
    function cloneDeep(value) {
      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
    }

    /**
     * This method is like `_.cloneWith` except that it recursively clones `value`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to recursively clone.
     * @param {Function} [customizer] The function to customize cloning.
     * @returns {*} Returns the deep cloned value.
     * @see _.cloneWith
     * @example
     *
     * function customizer(value) {
     *   if (_.isElement(value)) {
     *     return value.cloneNode(true);
     *   }
     * }
     *
     * var el = _.cloneDeepWith(document.body, customizer);
     *
     * console.log(el === document.body);
     * // => false
     * console.log(el.nodeName);
     * // => 'BODY'
     * console.log(el.childNodes.length);
     * // => 20
     */
    function cloneDeepWith(value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
    }

    /**
     * Checks if `object` conforms to `source` by invoking the predicate
     * properties of `source` with the corresponding property values of `object`.
     *
     * **Note:** This method is equivalent to `_.conforms` when `source` is
     * partially applied.
     *
     * @static
     * @memberOf _
     * @since 4.14.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property predicates to conform to.
     * @returns {boolean} Returns `true` if `object` conforms, else `false`.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     *
     * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
     * // => true
     *
     * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
     * // => false
     */
    function conformsTo(object, source) {
      return source == null || baseConformsTo(object, source, keys(source));
    }

    /**
     * Performs a
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * comparison between two values to determine if they are equivalent.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'a': 1 };
     * var other = { 'a': 1 };
     *
     * _.eq(object, object);
     * // => true
     *
     * _.eq(object, other);
     * // => false
     *
     * _.eq('a', 'a');
     * // => true
     *
     * _.eq('a', Object('a'));
     * // => false
     *
     * _.eq(NaN, NaN);
     * // => true
     */
    function eq(value, other) {
      return value === other || (value !== value && other !== other);
    }

    /**
     * Checks if `value` is greater than `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than `other`,
     *  else `false`.
     * @see _.lt
     * @example
     *
     * _.gt(3, 1);
     * // => true
     *
     * _.gt(3, 3);
     * // => false
     *
     * _.gt(1, 3);
     * // => false
     */
    var gt = createRelationalOperation(baseGt);

    /**
     * Checks if `value` is greater than or equal to `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than or equal to
     *  `other`, else `false`.
     * @see _.lte
     * @example
     *
     * _.gte(3, 1);
     * // => true
     *
     * _.gte(3, 3);
     * // => true
     *
     * _.gte(1, 3);
     * // => false
     */
    var gte = createRelationalOperation(function(value, other) {
      return value >= other;
    });

    /**
     * Checks if `value` is likely an `arguments` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an `arguments` object,
     *  else `false`.
     * @example
     *
     * _.isArguments(function() { return arguments; }());
     * // => true
     *
     * _.isArguments([1, 2, 3]);
     * // => false
     */
    var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
      return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
        !propertyIsEnumerable.call(value, 'callee');
    };

    /**
     * Checks if `value` is classified as an `Array` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array, else `false`.
     * @example
     *
     * _.isArray([1, 2, 3]);
     * // => true
     *
     * _.isArray(document.body.children);
     * // => false
     *
     * _.isArray('abc');
     * // => false
     *
     * _.isArray(_.noop);
     * // => false
     */
    var isArray = Array.isArray;

    /**
     * Checks if `value` is classified as an `ArrayBuffer` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
     * @example
     *
     * _.isArrayBuffer(new ArrayBuffer(2));
     * // => true
     *
     * _.isArrayBuffer(new Array(2));
     * // => false
     */
    var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;

    /**
     * Checks if `value` is array-like. A value is considered array-like if it's
     * not a function and has a `value.length` that's an integer greater than or
     * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
     * @example
     *
     * _.isArrayLike([1, 2, 3]);
     * // => true
     *
     * _.isArrayLike(document.body.children);
     * // => true
     *
     * _.isArrayLike('abc');
     * // => true
     *
     * _.isArrayLike(_.noop);
     * // => false
     */
    function isArrayLike(value) {
      return value != null && isLength(value.length) && !isFunction(value);
    }

    /**
     * This method is like `_.isArrayLike` except that it also checks if `value`
     * is an object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array-like object,
     *  else `false`.
     * @example
     *
     * _.isArrayLikeObject([1, 2, 3]);
     * // => true
     *
     * _.isArrayLikeObject(document.body.children);
     * // => true
     *
     * _.isArrayLikeObject('abc');
     * // => false
     *
     * _.isArrayLikeObject(_.noop);
     * // => false
     */
    function isArrayLikeObject(value) {
      return isObjectLike(value) && isArrayLike(value);
    }

    /**
     * Checks if `value` is classified as a boolean primitive or object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
     * @example
     *
     * _.isBoolean(false);
     * // => true
     *
     * _.isBoolean(null);
     * // => false
     */
    function isBoolean(value) {
      return value === true || value === false ||
        (isObjectLike(value) && baseGetTag(value) == boolTag);
    }

    /**
     * Checks if `value` is a buffer.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
     * @example
     *
     * _.isBuffer(new Buffer(2));
     * // => true
     *
     * _.isBuffer(new Uint8Array(2));
     * // => false
     */
    var isBuffer = nativeIsBuffer || stubFalse;

    /**
     * Checks if `value` is classified as a `Date` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
     * @example
     *
     * _.isDate(new Date);
     * // => true
     *
     * _.isDate('Mon April 23 2012');
     * // => false
     */
    var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;

    /**
     * Checks if `value` is likely a DOM element.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
     * @example
     *
     * _.isElement(document.body);
     * // => true
     *
     * _.isElement('<body>');
     * // => false
     */
    function isElement(value) {
      return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
    }

    /**
     * Checks if `value` is an empty object, collection, map, or set.
     *
     * Objects are considered empty if they have no own enumerable string keyed
     * properties.
     *
     * Array-like values such as `arguments` objects, arrays, buffers, strings, or
     * jQuery-like collections are considered empty if they have a `length` of `0`.
     * Similarly, maps and sets are considered empty if they have a `size` of `0`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is empty, else `false`.
     * @example
     *
     * _.isEmpty(null);
     * // => true
     *
     * _.isEmpty(true);
     * // => true
     *
     * _.isEmpty(1);
     * // => true
     *
     * _.isEmpty([1, 2, 3]);
     * // => false
     *
     * _.isEmpty({ 'a': 1 });
     * // => false
     */
    function isEmpty(value) {
      if (value == null) {
        return true;
      }
      if (isArrayLike(value) &&
          (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||
            isBuffer(value) || isTypedArray(value) || isArguments(value))) {
        return !value.length;
      }
      var tag = getTag(value);
      if (tag == mapTag || tag == setTag) {
        return !value.size;
      }
      if (isPrototype(value)) {
        return !baseKeys(value).length;
      }
      for (var key in value) {
        if (hasOwnProperty.call(value, key)) {
          return false;
        }
      }
      return true;
    }

    /**
     * Performs a deep comparison between two values to determine if they are
     * equivalent.
     *
     * **Note:** This method supports comparing arrays, array buffers, booleans,
     * date objects, error objects, maps, numbers, `Object` objects, regexes,
     * sets, strings, symbols, and typed arrays. `Object` objects are compared
     * by their own, not inherited, enumerable properties. Functions and DOM
     * nodes are compared by strict equality, i.e. `===`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'a': 1 };
     * var other = { 'a': 1 };
     *
     * _.isEqual(object, other);
     * // => true
     *
     * object === other;
     * // => false
     */
    function isEqual(value, other) {
      return baseIsEqual(value, other);
    }

    /**
     * This method is like `_.isEqual` except that it accepts `customizer` which
     * is invoked to compare values. If `customizer` returns `undefined`, comparisons
     * are handled by the method instead. The `customizer` is invoked with up to
     * six arguments: (objValue, othValue [, index|key, object, other, stack]).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * function isGreeting(value) {
     *   return /^h(?:i|ello)$/.test(value);
     * }
     *
     * function customizer(objValue, othValue) {
     *   if (isGreeting(objValue) && isGreeting(othValue)) {
     *     return true;
     *   }
     * }
     *
     * var array = ['hello', 'goodbye'];
     * var other = ['hi', 'goodbye'];
     *
     * _.isEqualWith(array, other, customizer);
     * // => true
     */
    function isEqualWith(value, other, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      var result = customizer ? customizer(value, other) : undefined;
      return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;
    }

    /**
     * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
     * `SyntaxError`, `TypeError`, or `URIError` object.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
     * @example
     *
     * _.isError(new Error);
     * // => true
     *
     * _.isError(Error);
     * // => false
     */
    function isError(value) {
      if (!isObjectLike(value)) {
        return false;
      }
      var tag = baseGetTag(value);
      return tag == errorTag || tag == domExcTag ||
        (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
    }

    /**
     * Checks if `value` is a finite primitive number.
     *
     * **Note:** This method is based on
     * [`Number.isFinite`](https://mdn.io/Number/isFinite).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
     * @example
     *
     * _.isFinite(3);
     * // => true
     *
     * _.isFinite(Number.MIN_VALUE);
     * // => true
     *
     * _.isFinite(Infinity);
     * // => false
     *
     * _.isFinite('3');
     * // => false
     */
    function isFinite(value) {
      return typeof value == 'number' && nativeIsFinite(value);
    }

    /**
     * Checks if `value` is classified as a `Function` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a function, else `false`.
     * @example
     *
     * _.isFunction(_);
     * // => true
     *
     * _.isFunction(/abc/);
     * // => false
     */
    function isFunction(value) {
      if (!isObject(value)) {
        return false;
      }
      // The use of `Object#toString` avoids issues with the `typeof` operator
      // in Safari 9 which returns 'object' for typed arrays and other constructors.
      var tag = baseGetTag(value);
      return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
    }

    /**
     * Checks if `value` is an integer.
     *
     * **Note:** This method is based on
     * [`Number.isInteger`](https://mdn.io/Number/isInteger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an integer, else `false`.
     * @example
     *
     * _.isInteger(3);
     * // => true
     *
     * _.isInteger(Number.MIN_VALUE);
     * // => false
     *
     * _.isInteger(Infinity);
     * // => false
     *
     * _.isInteger('3');
     * // => false
     */
    function isInteger(value) {
      return typeof value == 'number' && value == toInteger(value);
    }

    /**
     * Checks if `value` is a valid array-like length.
     *
     * **Note:** This method is loosely based on
     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
     * @example
     *
     * _.isLength(3);
     * // => true
     *
     * _.isLength(Number.MIN_VALUE);
     * // => false
     *
     * _.isLength(Infinity);
     * // => false
     *
     * _.isLength('3');
     * // => false
     */
    function isLength(value) {
      return typeof value == 'number' &&
        value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
    }

    /**
     * Checks if `value` is the
     * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an object, else `false`.
     * @example
     *
     * _.isObject({});
     * // => true
     *
     * _.isObject([1, 2, 3]);
     * // => true
     *
     * _.isObject(_.noop);
     * // => true
     *
     * _.isObject(null);
     * // => false
     */
    function isObject(value) {
      var type = typeof value;
      return value != null && (type == 'object' || type == 'function');
    }

    /**
     * Checks if `value` is object-like. A value is object-like if it's not `null`
     * and has a `typeof` result of "object".
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
     * @example
     *
     * _.isObjectLike({});
     * // => true
     *
     * _.isObjectLike([1, 2, 3]);
     * // => true
     *
     * _.isObjectLike(_.noop);
     * // => false
     *
     * _.isObjectLike(null);
     * // => false
     */
    function isObjectLike(value) {
      return value != null && typeof value == 'object';
    }

    /**
     * Checks if `value` is classified as a `Map` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a map, else `false`.
     * @example
     *
     * _.isMap(new Map);
     * // => true
     *
     * _.isMap(new WeakMap);
     * // => false
     */
    var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;

    /**
     * Performs a partial deep comparison between `object` and `source` to
     * determine if `object` contains equivalent property values.
     *
     * **Note:** This method is equivalent to `_.matches` when `source` is
     * partially applied.
     *
     * Partial comparisons will match empty array and empty object `source`
     * values against any array or object value, respectively. See `_.isEqual`
     * for a list of supported value comparisons.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     *
     * _.isMatch(object, { 'b': 2 });
     * // => true
     *
     * _.isMatch(object, { 'b': 1 });
     * // => false
     */
    function isMatch(object, source) {
      return object === source || baseIsMatch(object, source, getMatchData(source));
    }

    /**
     * This method is like `_.isMatch` except that it accepts `customizer` which
     * is invoked to compare values. If `customizer` returns `undefined`, comparisons
     * are handled by the method instead. The `customizer` is invoked with five
     * arguments: (objValue, srcValue, index|key, object, source).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     * @example
     *
     * function isGreeting(value) {
     *   return /^h(?:i|ello)$/.test(value);
     * }
     *
     * function customizer(objValue, srcValue) {
     *   if (isGreeting(objValue) && isGreeting(srcValue)) {
     *     return true;
     *   }
     * }
     *
     * var object = { 'greeting': 'hello' };
     * var source = { 'greeting': 'hi' };
     *
     * _.isMatchWith(object, source, customizer);
     * // => true
     */
    function isMatchWith(object, source, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseIsMatch(object, source, getMatchData(source), customizer);
    }

    /**
     * Checks if `value` is `NaN`.
     *
     * **Note:** This method is based on
     * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
     * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
     * `undefined` and other non-number values.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
     * @example
     *
     * _.isNaN(NaN);
     * // => true
     *
     * _.isNaN(new Number(NaN));
     * // => true
     *
     * isNaN(undefined);
     * // => true
     *
     * _.isNaN(undefined);
     * // => false
     */
    function isNaN(value) {
      // An `NaN` primitive is the only value that is not equal to itself.
      // Perform the `toStringTag` check first to avoid errors with some
      // ActiveX objects in IE.
      return isNumber(value) && value != +value;
    }

    /**
     * Checks if `value` is a pristine native function.
     *
     * **Note:** This method can't reliably detect native functions in the presence
     * of the core-js package because core-js circumvents this kind of detection.
     * Despite multiple requests, the core-js maintainer has made it clear: any
     * attempt to fix the detection will be obstructed. As a result, we're left
     * with little choice but to throw an error. Unfortunately, this also affects
     * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
     * which rely on core-js.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a native function,
     *  else `false`.
     * @example
     *
     * _.isNative(Array.prototype.push);
     * // => true
     *
     * _.isNative(_);
     * // => false
     */
    function isNative(value) {
      if (isMaskable(value)) {
        throw new Error(CORE_ERROR_TEXT);
      }
      return baseIsNative(value);
    }

    /**
     * Checks if `value` is `null`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
     * @example
     *
     * _.isNull(null);
     * // => true
     *
     * _.isNull(void 0);
     * // => false
     */
    function isNull(value) {
      return value === null;
    }

    /**
     * Checks if `value` is `null` or `undefined`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
     * @example
     *
     * _.isNil(null);
     * // => true
     *
     * _.isNil(void 0);
     * // => true
     *
     * _.isNil(NaN);
     * // => false
     */
    function isNil(value) {
      return value == null;
    }

    /**
     * Checks if `value` is classified as a `Number` primitive or object.
     *
     * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
     * classified as numbers, use the `_.isFinite` method.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a number, else `false`.
     * @example
     *
     * _.isNumber(3);
     * // => true
     *
     * _.isNumber(Number.MIN_VALUE);
     * // => true
     *
     * _.isNumber(Infinity);
     * // => true
     *
     * _.isNumber('3');
     * // => false
     */
    function isNumber(value) {
      return typeof value == 'number' ||
        (isObjectLike(value) && baseGetTag(value) == numberTag);
    }

    /**
     * Checks if `value` is a plain object, that is, an object created by the
     * `Object` constructor or one with a `[[Prototype]]` of `null`.
     *
     * @static
     * @memberOf _
     * @since 0.8.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * _.isPlainObject(new Foo);
     * // => false
     *
     * _.isPlainObject([1, 2, 3]);
     * // => false
     *
     * _.isPlainObject({ 'x': 0, 'y': 0 });
     * // => true
     *
     * _.isPlainObject(Object.create(null));
     * // => true
     */
    function isPlainObject(value) {
      if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
        return false;
      }
      var proto = getPrototype(value);
      if (proto === null) {
        return true;
      }
      var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
      return typeof Ctor == 'function' && Ctor instanceof Ctor &&
        funcToString.call(Ctor) == objectCtorString;
    }

    /**
     * Checks if `value` is classified as a `RegExp` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
     * @example
     *
     * _.isRegExp(/abc/);
     * // => true
     *
     * _.isRegExp('/abc/');
     * // => false
     */
    var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;

    /**
     * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
     * double precision number which isn't the result of a rounded unsafe integer.
     *
     * **Note:** This method is based on
     * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
     * @example
     *
     * _.isSafeInteger(3);
     * // => true
     *
     * _.isSafeInteger(Number.MIN_VALUE);
     * // => false
     *
     * _.isSafeInteger(Infinity);
     * // => false
     *
     * _.isSafeInteger('3');
     * // => false
     */
    function isSafeInteger(value) {
      return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
    }

    /**
     * Checks if `value` is classified as a `Set` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a set, else `false`.
     * @example
     *
     * _.isSet(new Set);
     * // => true
     *
     * _.isSet(new WeakSet);
     * // => false
     */
    var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;

    /**
     * Checks if `value` is classified as a `String` primitive or object.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a string, else `false`.
     * @example
     *
     * _.isString('abc');
     * // => true
     *
     * _.isString(1);
     * // => false
     */
    function isString(value) {
      return typeof value == 'string' ||
        (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);
    }

    /**
     * Checks if `value` is classified as a `Symbol` primitive or object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
     * @example
     *
     * _.isSymbol(Symbol.iterator);
     * // => true
     *
     * _.isSymbol('abc');
     * // => false
     */
    function isSymbol(value) {
      return typeof value == 'symbol' ||
        (isObjectLike(value) && baseGetTag(value) == symbolTag);
    }

    /**
     * Checks if `value` is classified as a typed array.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
     * @example
     *
     * _.isTypedArray(new Uint8Array);
     * // => true
     *
     * _.isTypedArray([]);
     * // => false
     */
    var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;

    /**
     * Checks if `value` is `undefined`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
     * @example
     *
     * _.isUndefined(void 0);
     * // => true
     *
     * _.isUndefined(null);
     * // => false
     */
    function isUndefined(value) {
      return value === undefined;
    }

    /**
     * Checks if `value` is classified as a `WeakMap` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
     * @example
     *
     * _.isWeakMap(new WeakMap);
     * // => true
     *
     * _.isWeakMap(new Map);
     * // => false
     */
    function isWeakMap(value) {
      return isObjectLike(value) && getTag(value) == weakMapTag;
    }

    /**
     * Checks if `value` is classified as a `WeakSet` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
     * @example
     *
     * _.isWeakSet(new WeakSet);
     * // => true
     *
     * _.isWeakSet(new Set);
     * // => false
     */
    function isWeakSet(value) {
      return isObjectLike(value) && baseGetTag(value) == weakSetTag;
    }

    /**
     * Checks if `value` is less than `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than `other`,
     *  else `false`.
     * @see _.gt
     * @example
     *
     * _.lt(1, 3);
     * // => true
     *
     * _.lt(3, 3);
     * // => false
     *
     * _.lt(3, 1);
     * // => false
     */
    var lt = createRelationalOperation(baseLt);

    /**
     * Checks if `value` is less than or equal to `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than or equal to
     *  `other`, else `false`.
     * @see _.gte
     * @example
     *
     * _.lte(1, 3);
     * // => true
     *
     * _.lte(3, 3);
     * // => true
     *
     * _.lte(3, 1);
     * // => false
     */
    var lte = createRelationalOperation(function(value, other) {
      return value <= other;
    });

    /**
     * Converts `value` to an array.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {Array} Returns the converted array.
     * @example
     *
     * _.toArray({ 'a': 1, 'b': 2 });
     * // => [1, 2]
     *
     * _.toArray('abc');
     * // => ['a', 'b', 'c']
     *
     * _.toArray(1);
     * // => []
     *
     * _.toArray(null);
     * // => []
     */
    function toArray(value) {
      if (!value) {
        return [];
      }
      if (isArrayLike(value)) {
        return isString(value) ? stringToArray(value) : copyArray(value);
      }
      if (symIterator && value[symIterator]) {
        return iteratorToArray(value[symIterator]());
      }
      var tag = getTag(value),
          func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);

      return func(value);
    }

    /**
     * Converts `value` to a finite number.
     *
     * @static
     * @memberOf _
     * @since 4.12.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted number.
     * @example
     *
     * _.toFinite(3.2);
     * // => 3.2
     *
     * _.toFinite(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toFinite(Infinity);
     * // => 1.7976931348623157e+308
     *
     * _.toFinite('3.2');
     * // => 3.2
     */
    function toFinite(value) {
      if (!value) {
        return value === 0 ? value : 0;
      }
      value = toNumber(value);
      if (value === INFINITY || value === -INFINITY) {
        var sign = (value < 0 ? -1 : 1);
        return sign * MAX_INTEGER;
      }
      return value === value ? value : 0;
    }

    /**
     * Converts `value` to an integer.
     *
     * **Note:** This method is loosely based on
     * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toInteger(3.2);
     * // => 3
     *
     * _.toInteger(Number.MIN_VALUE);
     * // => 0
     *
     * _.toInteger(Infinity);
     * // => 1.7976931348623157e+308
     *
     * _.toInteger('3.2');
     * // => 3
     */
    function toInteger(value) {
      var result = toFinite(value),
          remainder = result % 1;

      return result === result ? (remainder ? result - remainder : result) : 0;
    }

    /**
     * Converts `value` to an integer suitable for use as the length of an
     * array-like object.
     *
     * **Note:** This method is based on
     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toLength(3.2);
     * // => 3
     *
     * _.toLength(Number.MIN_VALUE);
     * // => 0
     *
     * _.toLength(Infinity);
     * // => 4294967295
     *
     * _.toLength('3.2');
     * // => 3
     */
    function toLength(value) {
      return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
    }

    /**
     * Converts `value` to a number.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to process.
     * @returns {number} Returns the number.
     * @example
     *
     * _.toNumber(3.2);
     * // => 3.2
     *
     * _.toNumber(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toNumber(Infinity);
     * // => Infinity
     *
     * _.toNumber('3.2');
     * // => 3.2
     */
    function toNumber(value) {
      if (typeof value == 'number') {
        return value;
      }
      if (isSymbol(value)) {
        return NAN;
      }
      if (isObject(value)) {
        var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
        value = isObject(other) ? (other + '') : other;
      }
      if (typeof value != 'string') {
        return value === 0 ? value : +value;
      }
      value = baseTrim(value);
      var isBinary = reIsBinary.test(value);
      return (isBinary || reIsOctal.test(value))
        ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
        : (reIsBadHex.test(value) ? NAN : +value);
    }

    /**
     * Converts `value` to a plain object flattening inherited enumerable string
     * keyed properties of `value` to own properties of the plain object.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {Object} Returns the converted plain object.
     * @example
     *
     * function Foo() {
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.assign({ 'a': 1 }, new Foo);
     * // => { 'a': 1, 'b': 2 }
     *
     * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
     * // => { 'a': 1, 'b': 2, 'c': 3 }
     */
    function toPlainObject(value) {
      return copyObject(value, keysIn(value));
    }

    /**
     * Converts `value` to a safe integer. A safe integer can be compared and
     * represented correctly.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toSafeInteger(3.2);
     * // => 3
     *
     * _.toSafeInteger(Number.MIN_VALUE);
     * // => 0
     *
     * _.toSafeInteger(Infinity);
     * // => 9007199254740991
     *
     * _.toSafeInteger('3.2');
     * // => 3
     */
    function toSafeInteger(value) {
      return value
        ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
        : (value === 0 ? value : 0);
    }

    /**
     * Converts `value` to a string. An empty string is returned for `null`
     * and `undefined` values. The sign of `-0` is preserved.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.toString(null);
     * // => ''
     *
     * _.toString(-0);
     * // => '-0'
     *
     * _.toString([1, 2, 3]);
     * // => '1,2,3'
     */
    function toString(value) {
      return value == null ? '' : baseToString(value);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Assigns own enumerable string keyed properties of source objects to the
     * destination object. Source objects are applied from left to right.
     * Subsequent sources overwrite property assignments of previous sources.
     *
     * **Note:** This method mutates `object` and is loosely based on
     * [`Object.assign`](https://mdn.io/Object/assign).
     *
     * @static
     * @memberOf _
     * @since 0.10.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.assignIn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * function Bar() {
     *   this.c = 3;
     * }
     *
     * Foo.prototype.b = 2;
     * Bar.prototype.d = 4;
     *
     * _.assign({ 'a': 0 }, new Foo, new Bar);
     * // => { 'a': 1, 'c': 3 }
     */
    var assign = createAssigner(function(object, source) {
      if (isPrototype(source) || isArrayLike(source)) {
        copyObject(source, keys(source), object);
        return;
      }
      for (var key in source) {
        if (hasOwnProperty.call(source, key)) {
          assignValue(object, key, source[key]);
        }
      }
    });

    /**
     * This method is like `_.assign` except that it iterates over own and
     * inherited source properties.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias extend
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.assign
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * function Bar() {
     *   this.c = 3;
     * }
     *
     * Foo.prototype.b = 2;
     * Bar.prototype.d = 4;
     *
     * _.assignIn({ 'a': 0 }, new Foo, new Bar);
     * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
     */
    var assignIn = createAssigner(function(object, source) {
      copyObject(source, keysIn(source), object);
    });

    /**
     * This method is like `_.assignIn` except that it accepts `customizer`
     * which is invoked to produce the assigned values. If `customizer` returns
     * `undefined`, assignment is handled by the method instead. The `customizer`
     * is invoked with five arguments: (objValue, srcValue, key, object, source).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias extendWith
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @see _.assignWith
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   return _.isUndefined(objValue) ? srcValue : objValue;
     * }
     *
     * var defaults = _.partialRight(_.assignInWith, customizer);
     *
     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {
      copyObject(source, keysIn(source), object, customizer);
    });

    /**
     * This method is like `_.assign` except that it accepts `customizer`
     * which is invoked to produce the assigned values. If `customizer` returns
     * `undefined`, assignment is handled by the method instead. The `customizer`
     * is invoked with five arguments: (objValue, srcValue, key, object, source).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @see _.assignInWith
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   return _.isUndefined(objValue) ? srcValue : objValue;
     * }
     *
     * var defaults = _.partialRight(_.assignWith, customizer);
     *
     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var assignWith = createAssigner(function(object, source, srcIndex, customizer) {
      copyObject(source, keys(source), object, customizer);
    });

    /**
     * Creates an array of values corresponding to `paths` of `object`.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Array} Returns the picked values.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
     *
     * _.at(object, ['a[0].b.c', 'a[1]']);
     * // => [3, 4]
     */
    var at = flatRest(baseAt);

    /**
     * Creates an object that inherits from the `prototype` object. If a
     * `properties` object is given, its own enumerable string keyed properties
     * are assigned to the created object.
     *
     * @static
     * @memberOf _
     * @since 2.3.0
     * @category Object
     * @param {Object} prototype The object to inherit from.
     * @param {Object} [properties] The properties to assign to the object.
     * @returns {Object} Returns the new object.
     * @example
     *
     * function Shape() {
     *   this.x = 0;
     *   this.y = 0;
     * }
     *
     * function Circle() {
     *   Shape.call(this);
     * }
     *
     * Circle.prototype = _.create(Shape.prototype, {
     *   'constructor': Circle
     * });
     *
     * var circle = new Circle;
     * circle instanceof Circle;
     * // => true
     *
     * circle instanceof Shape;
     * // => true
     */
    function create(prototype, properties) {
      var result = baseCreate(prototype);
      return properties == null ? result : baseAssign(result, properties);
    }

    /**
     * Assigns own and inherited enumerable string keyed properties of source
     * objects to the destination object for all destination properties that
     * resolve to `undefined`. Source objects are applied from left to right.
     * Once a property is set, additional values of the same property are ignored.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.defaultsDeep
     * @example
     *
     * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var defaults = baseRest(function(object, sources) {
      object = Object(object);

      var index = -1;
      var length = sources.length;
      var guard = length > 2 ? sources[2] : undefined;

      if (guard && isIterateeCall(sources[0], sources[1], guard)) {
        length = 1;
      }

      while (++index < length) {
        var source = sources[index];
        var props = keysIn(source);
        var propsIndex = -1;
        var propsLength = props.length;

        while (++propsIndex < propsLength) {
          var key = props[propsIndex];
          var value = object[key];

          if (value === undefined ||
              (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
            object[key] = source[key];
          }
        }
      }

      return object;
    });

    /**
     * This method is like `_.defaults` except that it recursively assigns
     * default properties.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.defaults
     * @example
     *
     * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
     * // => { 'a': { 'b': 2, 'c': 3 } }
     */
    var defaultsDeep = baseRest(function(args) {
      args.push(undefined, customDefaultsMerge);
      return apply(mergeWith, undefined, args);
    });

    /**
     * This method is like `_.find` except that it returns the key of the first
     * element `predicate` returns truthy for instead of the element itself.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {string|undefined} Returns the key of the matched element,
     *  else `undefined`.
     * @example
     *
     * var users = {
     *   'barney':  { 'age': 36, 'active': true },
     *   'fred':    { 'age': 40, 'active': false },
     *   'pebbles': { 'age': 1,  'active': true }
     * };
     *
     * _.findKey(users, function(o) { return o.age < 40; });
     * // => 'barney' (iteration order is not guaranteed)
     *
     * // The `_.matches` iteratee shorthand.
     * _.findKey(users, { 'age': 1, 'active': true });
     * // => 'pebbles'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findKey(users, ['active', false]);
     * // => 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.findKey(users, 'active');
     * // => 'barney'
     */
    function findKey(object, predicate) {
      return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);
    }

    /**
     * This method is like `_.findKey` except that it iterates over elements of
     * a collection in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {string|undefined} Returns the key of the matched element,
     *  else `undefined`.
     * @example
     *
     * var users = {
     *   'barney':  { 'age': 36, 'active': true },
     *   'fred':    { 'age': 40, 'active': false },
     *   'pebbles': { 'age': 1,  'active': true }
     * };
     *
     * _.findLastKey(users, function(o) { return o.age < 40; });
     * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
     *
     * // The `_.matches` iteratee shorthand.
     * _.findLastKey(users, { 'age': 36, 'active': true });
     * // => 'barney'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findLastKey(users, ['active', false]);
     * // => 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.findLastKey(users, 'active');
     * // => 'pebbles'
     */
    function findLastKey(object, predicate) {
      return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);
    }

    /**
     * Iterates over own and inherited enumerable string keyed properties of an
     * object and invokes `iteratee` for each property. The iteratee is invoked
     * with three arguments: (value, key, object). Iteratee functions may exit
     * iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 0.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forInRight
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forIn(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
     */
    function forIn(object, iteratee) {
      return object == null
        ? object
        : baseFor(object, getIteratee(iteratee, 3), keysIn);
    }

    /**
     * This method is like `_.forIn` except that it iterates over properties of
     * `object` in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forIn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forInRight(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
     */
    function forInRight(object, iteratee) {
      return object == null
        ? object
        : baseForRight(object, getIteratee(iteratee, 3), keysIn);
    }

    /**
     * Iterates over own enumerable string keyed properties of an object and
     * invokes `iteratee` for each property. The iteratee is invoked with three
     * arguments: (value, key, object). Iteratee functions may exit iteration
     * early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 0.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forOwnRight
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forOwn(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a' then 'b' (iteration order is not guaranteed).
     */
    function forOwn(object, iteratee) {
      return object && baseForOwn(object, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.forOwn` except that it iterates over properties of
     * `object` in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forOwn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forOwnRight(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
     */
    function forOwnRight(object, iteratee) {
      return object && baseForOwnRight(object, getIteratee(iteratee, 3));
    }

    /**
     * Creates an array of function property names from own enumerable properties
     * of `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the function names.
     * @see _.functionsIn
     * @example
     *
     * function Foo() {
     *   this.a = _.constant('a');
     *   this.b = _.constant('b');
     * }
     *
     * Foo.prototype.c = _.constant('c');
     *
     * _.functions(new Foo);
     * // => ['a', 'b']
     */
    function functions(object) {
      return object == null ? [] : baseFunctions(object, keys(object));
    }

    /**
     * Creates an array of function property names from own and inherited
     * enumerable properties of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the function names.
     * @see _.functions
     * @example
     *
     * function Foo() {
     *   this.a = _.constant('a');
     *   this.b = _.constant('b');
     * }
     *
     * Foo.prototype.c = _.constant('c');
     *
     * _.functionsIn(new Foo);
     * // => ['a', 'b', 'c']
     */
    function functionsIn(object) {
      return object == null ? [] : baseFunctions(object, keysIn(object));
    }

    /**
     * Gets the value at `path` of `object`. If the resolved value is
     * `undefined`, the `defaultValue` is returned in its place.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to get.
     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.get(object, 'a[0].b.c');
     * // => 3
     *
     * _.get(object, ['a', '0', 'b', 'c']);
     * // => 3
     *
     * _.get(object, 'a.b.c', 'default');
     * // => 'default'
     */
    function get(object, path, defaultValue) {
      var result = object == null ? undefined : baseGet(object, path);
      return result === undefined ? defaultValue : result;
    }

    /**
     * Checks if `path` is a direct property of `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     * @example
     *
     * var object = { 'a': { 'b': 2 } };
     * var other = _.create({ 'a': _.create({ 'b': 2 }) });
     *
     * _.has(object, 'a');
     * // => true
     *
     * _.has(object, 'a.b');
     * // => true
     *
     * _.has(object, ['a', 'b']);
     * // => true
     *
     * _.has(other, 'a');
     * // => false
     */
    function has(object, path) {
      return object != null && hasPath(object, path, baseHas);
    }

    /**
     * Checks if `path` is a direct or inherited property of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     * @example
     *
     * var object = _.create({ 'a': _.create({ 'b': 2 }) });
     *
     * _.hasIn(object, 'a');
     * // => true
     *
     * _.hasIn(object, 'a.b');
     * // => true
     *
     * _.hasIn(object, ['a', 'b']);
     * // => true
     *
     * _.hasIn(object, 'b');
     * // => false
     */
    function hasIn(object, path) {
      return object != null && hasPath(object, path, baseHasIn);
    }

    /**
     * Creates an object composed of the inverted keys and values of `object`.
     * If `object` contains duplicate values, subsequent values overwrite
     * property assignments of previous values.
     *
     * @static
     * @memberOf _
     * @since 0.7.0
     * @category Object
     * @param {Object} object The object to invert.
     * @returns {Object} Returns the new inverted object.
     * @example
     *
     * var object = { 'a': 1, 'b': 2, 'c': 1 };
     *
     * _.invert(object);
     * // => { '1': 'c', '2': 'b' }
     */
    var invert = createInverter(function(result, value, key) {
      if (value != null &&
          typeof value.toString != 'function') {
        value = nativeObjectToString.call(value);
      }

      result[value] = key;
    }, constant(identity));

    /**
     * This method is like `_.invert` except that the inverted object is generated
     * from the results of running each element of `object` thru `iteratee`. The
     * corresponding inverted value of each inverted key is an array of keys
     * responsible for generating the inverted value. The iteratee is invoked
     * with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.1.0
     * @category Object
     * @param {Object} object The object to invert.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Object} Returns the new inverted object.
     * @example
     *
     * var object = { 'a': 1, 'b': 2, 'c': 1 };
     *
     * _.invertBy(object);
     * // => { '1': ['a', 'c'], '2': ['b'] }
     *
     * _.invertBy(object, function(value) {
     *   return 'group' + value;
     * });
     * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
     */
    var invertBy = createInverter(function(result, value, key) {
      if (value != null &&
          typeof value.toString != 'function') {
        value = nativeObjectToString.call(value);
      }

      if (hasOwnProperty.call(result, value)) {
        result[value].push(key);
      } else {
        result[value] = [key];
      }
    }, getIteratee);

    /**
     * Invokes the method at `path` of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the method to invoke.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {*} Returns the result of the invoked method.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
     *
     * _.invoke(object, 'a[0].b.c.slice', 1, 3);
     * // => [2, 3]
     */
    var invoke = baseRest(baseInvoke);

    /**
     * Creates an array of the own enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects. See the
     * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
     * for more details.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keys(new Foo);
     * // => ['a', 'b'] (iteration order is not guaranteed)
     *
     * _.keys('hi');
     * // => ['0', '1']
     */
    function keys(object) {
      return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
    }

    /**
     * Creates an array of the own and inherited enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keysIn(new Foo);
     * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
     */
    function keysIn(object) {
      return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
    }

    /**
     * The opposite of `_.mapValues`; this method creates an object with the
     * same values as `object` and keys generated by running each own enumerable
     * string keyed property of `object` thru `iteratee`. The iteratee is invoked
     * with three arguments: (value, key, object).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns the new mapped object.
     * @see _.mapValues
     * @example
     *
     * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
     *   return key + value;
     * });
     * // => { 'a1': 1, 'b2': 2 }
     */
    function mapKeys(object, iteratee) {
      var result = {};
      iteratee = getIteratee(iteratee, 3);

      baseForOwn(object, function(value, key, object) {
        baseAssignValue(result, iteratee(value, key, object), value);
      });
      return result;
    }

    /**
     * Creates an object with the same keys as `object` and values generated
     * by running each own enumerable string keyed property of `object` thru
     * `iteratee`. The iteratee is invoked with three arguments:
     * (value, key, object).
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns the new mapped object.
     * @see _.mapKeys
     * @example
     *
     * var users = {
     *   'fred':    { 'user': 'fred',    'age': 40 },
     *   'pebbles': { 'user': 'pebbles', 'age': 1 }
     * };
     *
     * _.mapValues(users, function(o) { return o.age; });
     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
     *
     * // The `_.property` iteratee shorthand.
     * _.mapValues(users, 'age');
     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
     */
    function mapValues(object, iteratee) {
      var result = {};
      iteratee = getIteratee(iteratee, 3);

      baseForOwn(object, function(value, key, object) {
        baseAssignValue(result, key, iteratee(value, key, object));
      });
      return result;
    }

    /**
     * This method is like `_.assign` except that it recursively merges own and
     * inherited enumerable string keyed properties of source objects into the
     * destination object. Source properties that resolve to `undefined` are
     * skipped if a destination value exists. Array and plain object properties
     * are merged recursively. Other objects and value types are overridden by
     * assignment. Source objects are applied from left to right. Subsequent
     * sources overwrite property assignments of previous sources.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {
     *   'a': [{ 'b': 2 }, { 'd': 4 }]
     * };
     *
     * var other = {
     *   'a': [{ 'c': 3 }, { 'e': 5 }]
     * };
     *
     * _.merge(object, other);
     * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
     */
    var merge = createAssigner(function(object, source, srcIndex) {
      baseMerge(object, source, srcIndex);
    });

    /**
     * This method is like `_.merge` except that it accepts `customizer` which
     * is invoked to produce the merged values of the destination and source
     * properties. If `customizer` returns `undefined`, merging is handled by the
     * method instead. The `customizer` is invoked with six arguments:
     * (objValue, srcValue, key, object, source, stack).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} customizer The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   if (_.isArray(objValue)) {
     *     return objValue.concat(srcValue);
     *   }
     * }
     *
     * var object = { 'a': [1], 'b': [2] };
     * var other = { 'a': [3], 'b': [4] };
     *
     * _.mergeWith(object, other, customizer);
     * // => { 'a': [1, 3], 'b': [2, 4] }
     */
    var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {
      baseMerge(object, source, srcIndex, customizer);
    });

    /**
     * The opposite of `_.pick`; this method creates an object composed of the
     * own and inherited enumerable property paths of `object` that are not omitted.
     *
     * **Note:** This method is considerably slower than `_.pick`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The source object.
     * @param {...(string|string[])} [paths] The property paths to omit.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.omit(object, ['a', 'c']);
     * // => { 'b': '2' }
     */
    var omit = flatRest(function(object, paths) {
      var result = {};
      if (object == null) {
        return result;
      }
      var isDeep = false;
      paths = arrayMap(paths, function(path) {
        path = castPath(path, object);
        isDeep || (isDeep = path.length > 1);
        return path;
      });
      copyObject(object, getAllKeysIn(object), result);
      if (isDeep) {
        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
      }
      var length = paths.length;
      while (length--) {
        baseUnset(result, paths[length]);
      }
      return result;
    });

    /**
     * The opposite of `_.pickBy`; this method creates an object composed of
     * the own and inherited enumerable string keyed properties of `object` that
     * `predicate` doesn't return truthy for. The predicate is invoked with two
     * arguments: (value, key).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The source object.
     * @param {Function} [predicate=_.identity] The function invoked per property.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.omitBy(object, _.isNumber);
     * // => { 'b': '2' }
     */
    function omitBy(object, predicate) {
      return pickBy(object, negate(getIteratee(predicate)));
    }

    /**
     * Creates an object composed of the picked `object` properties.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The source object.
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.pick(object, ['a', 'c']);
     * // => { 'a': 1, 'c': 3 }
     */
    var pick = flatRest(function(object, paths) {
      return object == null ? {} : basePick(object, paths);
    });

    /**
     * Creates an object composed of the `object` properties `predicate` returns
     * truthy for. The predicate is invoked with two arguments: (value, key).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The source object.
     * @param {Function} [predicate=_.identity] The function invoked per property.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.pickBy(object, _.isNumber);
     * // => { 'a': 1, 'c': 3 }
     */
    function pickBy(object, predicate) {
      if (object == null) {
        return {};
      }
      var props = arrayMap(getAllKeysIn(object), function(prop) {
        return [prop];
      });
      predicate = getIteratee(predicate);
      return basePickBy(object, props, function(value, path) {
        return predicate(value, path[0]);
      });
    }

    /**
     * This method is like `_.get` except that if the resolved value is a
     * function it's invoked with the `this` binding of its parent object and
     * its result is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to resolve.
     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
     *
     * _.result(object, 'a[0].b.c1');
     * // => 3
     *
     * _.result(object, 'a[0].b.c2');
     * // => 4
     *
     * _.result(object, 'a[0].b.c3', 'default');
     * // => 'default'
     *
     * _.result(object, 'a[0].b.c3', _.constant('default'));
     * // => 'default'
     */
    function result(object, path, defaultValue) {
      path = castPath(path, object);

      var index = -1,
          length = path.length;

      // Ensure the loop is entered when path is empty.
      if (!length) {
        length = 1;
        object = undefined;
      }
      while (++index < length) {
        var value = object == null ? undefined : object[toKey(path[index])];
        if (value === undefined) {
          index = length;
          value = defaultValue;
        }
        object = isFunction(value) ? value.call(object) : value;
      }
      return object;
    }

    /**
     * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
     * it's created. Arrays are created for missing index properties while objects
     * are created for all other missing properties. Use `_.setWith` to customize
     * `path` creation.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.set(object, 'a[0].b.c', 4);
     * console.log(object.a[0].b.c);
     * // => 4
     *
     * _.set(object, ['x', '0', 'y', 'z'], 5);
     * console.log(object.x[0].y.z);
     * // => 5
     */
    function set(object, path, value) {
      return object == null ? object : baseSet(object, path, value);
    }

    /**
     * This method is like `_.set` except that it accepts `customizer` which is
     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
     * path creation is handled by the method instead. The `customizer` is invoked
     * with three arguments: (nsValue, key, nsObject).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {};
     *
     * _.setWith(object, '[0][1]', 'a', Object);
     * // => { '0': { '1': 'a' } }
     */
    function setWith(object, path, value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return object == null ? object : baseSet(object, path, value, customizer);
    }

    /**
     * Creates an array of own enumerable string keyed-value pairs for `object`
     * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
     * entries are returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias entries
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the key-value pairs.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.toPairs(new Foo);
     * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
     */
    var toPairs = createToPairs(keys);

    /**
     * Creates an array of own and inherited enumerable string keyed-value pairs
     * for `object` which can be consumed by `_.fromPairs`. If `object` is a map
     * or set, its entries are returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias entriesIn
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the key-value pairs.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.toPairsIn(new Foo);
     * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
     */
    var toPairsIn = createToPairs(keysIn);

    /**
     * An alternative to `_.reduce`; this method transforms `object` to a new
     * `accumulator` object which is the result of running each of its own
     * enumerable string keyed properties thru `iteratee`, with each invocation
     * potentially mutating the `accumulator` object. If `accumulator` is not
     * provided, a new object with the same `[[Prototype]]` will be used. The
     * iteratee is invoked with four arguments: (accumulator, value, key, object).
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 1.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The custom accumulator value.
     * @returns {*} Returns the accumulated value.
     * @example
     *
     * _.transform([2, 3, 4], function(result, n) {
     *   result.push(n *= n);
     *   return n % 2 == 0;
     * }, []);
     * // => [4, 9]
     *
     * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
     *   (result[value] || (result[value] = [])).push(key);
     * }, {});
     * // => { '1': ['a', 'c'], '2': ['b'] }
     */
    function transform(object, iteratee, accumulator) {
      var isArr = isArray(object),
          isArrLike = isArr || isBuffer(object) || isTypedArray(object);

      iteratee = getIteratee(iteratee, 4);
      if (accumulator == null) {
        var Ctor = object && object.constructor;
        if (isArrLike) {
          accumulator = isArr ? new Ctor : [];
        }
        else if (isObject(object)) {
          accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
        }
        else {
          accumulator = {};
        }
      }
      (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {
        return iteratee(accumulator, value, index, object);
      });
      return accumulator;
    }

    /**
     * Removes the property at `path` of `object`.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to unset.
     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 7 } }] };
     * _.unset(object, 'a[0].b.c');
     * // => true
     *
     * console.log(object);
     * // => { 'a': [{ 'b': {} }] };
     *
     * _.unset(object, ['a', '0', 'b', 'c']);
     * // => true
     *
     * console.log(object);
     * // => { 'a': [{ 'b': {} }] };
     */
    function unset(object, path) {
      return object == null ? true : baseUnset(object, path);
    }

    /**
     * This method is like `_.set` except that accepts `updater` to produce the
     * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
     * is invoked with one argument: (value).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {Function} updater The function to produce the updated value.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.update(object, 'a[0].b.c', function(n) { return n * n; });
     * console.log(object.a[0].b.c);
     * // => 9
     *
     * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
     * console.log(object.x[0].y.z);
     * // => 0
     */
    function update(object, path, updater) {
      return object == null ? object : baseUpdate(object, path, castFunction(updater));
    }

    /**
     * This method is like `_.update` except that it accepts `customizer` which is
     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
     * path creation is handled by the method instead. The `customizer` is invoked
     * with three arguments: (nsValue, key, nsObject).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {Function} updater The function to produce the updated value.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {};
     *
     * _.updateWith(object, '[0][1]', _.constant('a'), Object);
     * // => { '0': { '1': 'a' } }
     */
    function updateWith(object, path, updater, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
    }

    /**
     * Creates an array of the own enumerable string keyed property values of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property values.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.values(new Foo);
     * // => [1, 2] (iteration order is not guaranteed)
     *
     * _.values('hi');
     * // => ['h', 'i']
     */
    function values(object) {
      return object == null ? [] : baseValues(object, keys(object));
    }

    /**
     * Creates an array of the own and inherited enumerable string keyed property
     * values of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property values.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.valuesIn(new Foo);
     * // => [1, 2, 3] (iteration order is not guaranteed)
     */
    function valuesIn(object) {
      return object == null ? [] : baseValues(object, keysIn(object));
    }

    /*------------------------------------------------------------------------*/

    /**
     * Clamps `number` within the inclusive `lower` and `upper` bounds.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Number
     * @param {number} number The number to clamp.
     * @param {number} [lower] The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the clamped number.
     * @example
     *
     * _.clamp(-10, -5, 5);
     * // => -5
     *
     * _.clamp(10, -5, 5);
     * // => 5
     */
    function clamp(number, lower, upper) {
      if (upper === undefined) {
        upper = lower;
        lower = undefined;
      }
      if (upper !== undefined) {
        upper = toNumber(upper);
        upper = upper === upper ? upper : 0;
      }
      if (lower !== undefined) {
        lower = toNumber(lower);
        lower = lower === lower ? lower : 0;
      }
      return baseClamp(toNumber(number), lower, upper);
    }

    /**
     * Checks if `n` is between `start` and up to, but not including, `end`. If
     * `end` is not specified, it's set to `start` with `start` then set to `0`.
     * If `start` is greater than `end` the params are swapped to support
     * negative ranges.
     *
     * @static
     * @memberOf _
     * @since 3.3.0
     * @category Number
     * @param {number} number The number to check.
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
     * @see _.range, _.rangeRight
     * @example
     *
     * _.inRange(3, 2, 4);
     * // => true
     *
     * _.inRange(4, 8);
     * // => true
     *
     * _.inRange(4, 2);
     * // => false
     *
     * _.inRange(2, 2);
     * // => false
     *
     * _.inRange(1.2, 2);
     * // => true
     *
     * _.inRange(5.2, 4);
     * // => false
     *
     * _.inRange(-3, -2, -6);
     * // => true
     */
    function inRange(number, start, end) {
      start = toFinite(start);
      if (end === undefined) {
        end = start;
        start = 0;
      } else {
        end = toFinite(end);
      }
      number = toNumber(number);
      return baseInRange(number, start, end);
    }

    /**
     * Produces a random number between the inclusive `lower` and `upper` bounds.
     * If only one argument is provided a number between `0` and the given number
     * is returned. If `floating` is `true`, or either `lower` or `upper` are
     * floats, a floating-point number is returned instead of an integer.
     *
     * **Note:** JavaScript follows the IEEE-754 standard for resolving
     * floating-point values which can produce unexpected results.
     *
     * @static
     * @memberOf _
     * @since 0.7.0
     * @category Number
     * @param {number} [lower=0] The lower bound.
     * @param {number} [upper=1] The upper bound.
     * @param {boolean} [floating] Specify returning a floating-point number.
     * @returns {number} Returns the random number.
     * @example
     *
     * _.random(0, 5);
     * // => an integer between 0 and 5
     *
     * _.random(5);
     * // => also an integer between 0 and 5
     *
     * _.random(5, true);
     * // => a floating-point number between 0 and 5
     *
     * _.random(1.2, 5.2);
     * // => a floating-point number between 1.2 and 5.2
     */
    function random(lower, upper, floating) {
      if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
        upper = floating = undefined;
      }
      if (floating === undefined) {
        if (typeof upper == 'boolean') {
          floating = upper;
          upper = undefined;
        }
        else if (typeof lower == 'boolean') {
          floating = lower;
          lower = undefined;
        }
      }
      if (lower === undefined && upper === undefined) {
        lower = 0;
        upper = 1;
      }
      else {
        lower = toFinite(lower);
        if (upper === undefined) {
          upper = lower;
          lower = 0;
        } else {
          upper = toFinite(upper);
        }
      }
      if (lower > upper) {
        var temp = lower;
        lower = upper;
        upper = temp;
      }
      if (floating || lower % 1 || upper % 1) {
        var rand = nativeRandom();
        return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);
      }
      return baseRandom(lower, upper);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the camel cased string.
     * @example
     *
     * _.camelCase('Foo Bar');
     * // => 'fooBar'
     *
     * _.camelCase('--foo-bar--');
     * // => 'fooBar'
     *
     * _.camelCase('__FOO_BAR__');
     * // => 'fooBar'
     */
    var camelCase = createCompounder(function(result, word, index) {
      word = word.toLowerCase();
      return result + (index ? capitalize(word) : word);
    });

    /**
     * Converts the first character of `string` to upper case and the remaining
     * to lower case.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to capitalize.
     * @returns {string} Returns the capitalized string.
     * @example
     *
     * _.capitalize('FRED');
     * // => 'Fred'
     */
    function capitalize(string) {
      return upperFirst(toString(string).toLowerCase());
    }

    /**
     * Deburrs `string` by converting
     * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
     * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
     * letters to basic Latin letters and removing
     * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to deburr.
     * @returns {string} Returns the deburred string.
     * @example
     *
     * _.deburr('déjà vu');
     * // => 'deja vu'
     */
    function deburr(string) {
      string = toString(string);
      return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
    }

    /**
     * Checks if `string` ends with the given target string.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {string} [target] The string to search for.
     * @param {number} [position=string.length] The position to search up to.
     * @returns {boolean} Returns `true` if `string` ends with `target`,
     *  else `false`.
     * @example
     *
     * _.endsWith('abc', 'c');
     * // => true
     *
     * _.endsWith('abc', 'b');
     * // => false
     *
     * _.endsWith('abc', 'b', 2);
     * // => true
     */
    function endsWith(string, target, position) {
      string = toString(string);
      target = baseToString(target);

      var length = string.length;
      position = position === undefined
        ? length
        : baseClamp(toInteger(position), 0, length);

      var end = position;
      position -= target.length;
      return position >= 0 && string.slice(position, end) == target;
    }

    /**
     * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
     * corresponding HTML entities.
     *
     * **Note:** No other characters are escaped. To escape additional
     * characters use a third-party library like [_he_](https://mths.be/he).
     *
     * Though the ">" character is escaped for symmetry, characters like
     * ">" and "/" don't need escaping in HTML and have no special meaning
     * unless they're part of a tag or unquoted attribute value. See
     * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
     * (under "semi-related fun fact") for more details.
     *
     * When working with HTML you should always
     * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
     * XSS vectors.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escape('fred, barney, & pebbles');
     * // => 'fred, barney, &amp; pebbles'
     */
    function escape(string) {
      string = toString(string);
      return (string && reHasUnescapedHtml.test(string))
        ? string.replace(reUnescapedHtml, escapeHtmlChar)
        : string;
    }

    /**
     * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
     * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escapeRegExp('[lodash](https://lodash.com/)');
     * // => '\[lodash\]\(https://lodash\.com/\)'
     */
    function escapeRegExp(string) {
      string = toString(string);
      return (string && reHasRegExpChar.test(string))
        ? string.replace(reRegExpChar, '\\$&')
        : string;
    }

    /**
     * Converts `string` to
     * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the kebab cased string.
     * @example
     *
     * _.kebabCase('Foo Bar');
     * // => 'foo-bar'
     *
     * _.kebabCase('fooBar');
     * // => 'foo-bar'
     *
     * _.kebabCase('__FOO_BAR__');
     * // => 'foo-bar'
     */
    var kebabCase = createCompounder(function(result, word, index) {
      return result + (index ? '-' : '') + word.toLowerCase();
    });

    /**
     * Converts `string`, as space separated words, to lower case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the lower cased string.
     * @example
     *
     * _.lowerCase('--Foo-Bar--');
     * // => 'foo bar'
     *
     * _.lowerCase('fooBar');
     * // => 'foo bar'
     *
     * _.lowerCase('__FOO_BAR__');
     * // => 'foo bar'
     */
    var lowerCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + word.toLowerCase();
    });

    /**
     * Converts the first character of `string` to lower case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.lowerFirst('Fred');
     * // => 'fred'
     *
     * _.lowerFirst('FRED');
     * // => 'fRED'
     */
    var lowerFirst = createCaseFirst('toLowerCase');

    /**
     * Pads `string` on the left and right sides if it's shorter than `length`.
     * Padding characters are truncated if they can't be evenly divided by `length`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.pad('abc', 8);
     * // => '  abc   '
     *
     * _.pad('abc', 8, '_-');
     * // => '_-abc_-_'
     *
     * _.pad('abc', 3);
     * // => 'abc'
     */
    function pad(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      if (!length || strLength >= length) {
        return string;
      }
      var mid = (length - strLength) / 2;
      return (
        createPadding(nativeFloor(mid), chars) +
        string +
        createPadding(nativeCeil(mid), chars)
      );
    }

    /**
     * Pads `string` on the right side if it's shorter than `length`. Padding
     * characters are truncated if they exceed `length`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.padEnd('abc', 6);
     * // => 'abc   '
     *
     * _.padEnd('abc', 6, '_-');
     * // => 'abc_-_'
     *
     * _.padEnd('abc', 3);
     * // => 'abc'
     */
    function padEnd(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      return (length && strLength < length)
        ? (string + createPadding(length - strLength, chars))
        : string;
    }

    /**
     * Pads `string` on the left side if it's shorter than `length`. Padding
     * characters are truncated if they exceed `length`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.padStart('abc', 6);
     * // => '   abc'
     *
     * _.padStart('abc', 6, '_-');
     * // => '_-_abc'
     *
     * _.padStart('abc', 3);
     * // => 'abc'
     */
    function padStart(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      return (length && strLength < length)
        ? (createPadding(length - strLength, chars) + string)
        : string;
    }

    /**
     * Converts `string` to an integer of the specified radix. If `radix` is
     * `undefined` or `0`, a `radix` of `10` is used unless `value` is a
     * hexadecimal, in which case a `radix` of `16` is used.
     *
     * **Note:** This method aligns with the
     * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category String
     * @param {string} string The string to convert.
     * @param {number} [radix=10] The radix to interpret `value` by.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.parseInt('08');
     * // => 8
     *
     * _.map(['6', '08', '10'], _.parseInt);
     * // => [6, 8, 10]
     */
    function parseInt(string, radix, guard) {
      if (guard || radix == null) {
        radix = 0;
      } else if (radix) {
        radix = +radix;
      }
      return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
    }

    /**
     * Repeats the given string `n` times.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to repeat.
     * @param {number} [n=1] The number of times to repeat the string.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the repeated string.
     * @example
     *
     * _.repeat('*', 3);
     * // => '***'
     *
     * _.repeat('abc', 2);
     * // => 'abcabc'
     *
     * _.repeat('abc', 0);
     * // => ''
     */
    function repeat(string, n, guard) {
      if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {
        n = 1;
      } else {
        n = toInteger(n);
      }
      return baseRepeat(toString(string), n);
    }

    /**
     * Replaces matches for `pattern` in `string` with `replacement`.
     *
     * **Note:** This method is based on
     * [`String#replace`](https://mdn.io/String/replace).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to modify.
     * @param {RegExp|string} pattern The pattern to replace.
     * @param {Function|string} replacement The match replacement.
     * @returns {string} Returns the modified string.
     * @example
     *
     * _.replace('Hi Fred', 'Fred', 'Barney');
     * // => 'Hi Barney'
     */
    function replace() {
      var args = arguments,
          string = toString(args[0]);

      return args.length < 3 ? string : string.replace(args[1], args[2]);
    }

    /**
     * Converts `string` to
     * [snake case](https://en.wikipedia.org/wiki/Snake_case).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the snake cased string.
     * @example
     *
     * _.snakeCase('Foo Bar');
     * // => 'foo_bar'
     *
     * _.snakeCase('fooBar');
     * // => 'foo_bar'
     *
     * _.snakeCase('--FOO-BAR--');
     * // => 'foo_bar'
     */
    var snakeCase = createCompounder(function(result, word, index) {
      return result + (index ? '_' : '') + word.toLowerCase();
    });

    /**
     * Splits `string` by `separator`.
     *
     * **Note:** This method is based on
     * [`String#split`](https://mdn.io/String/split).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to split.
     * @param {RegExp|string} separator The separator pattern to split by.
     * @param {number} [limit] The length to truncate results to.
     * @returns {Array} Returns the string segments.
     * @example
     *
     * _.split('a-b-c', '-', 2);
     * // => ['a', 'b']
     */
    function split(string, separator, limit) {
      if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
        separator = limit = undefined;
      }
      limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;
      if (!limit) {
        return [];
      }
      string = toString(string);
      if (string && (
            typeof separator == 'string' ||
            (separator != null && !isRegExp(separator))
          )) {
        separator = baseToString(separator);
        if (!separator && hasUnicode(string)) {
          return castSlice(stringToArray(string), 0, limit);
        }
      }
      return string.split(separator, limit);
    }

    /**
     * Converts `string` to
     * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
     *
     * @static
     * @memberOf _
     * @since 3.1.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the start cased string.
     * @example
     *
     * _.startCase('--foo-bar--');
     * // => 'Foo Bar'
     *
     * _.startCase('fooBar');
     * // => 'Foo Bar'
     *
     * _.startCase('__FOO_BAR__');
     * // => 'FOO BAR'
     */
    var startCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + upperFirst(word);
    });

    /**
     * Checks if `string` starts with the given target string.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {string} [target] The string to search for.
     * @param {number} [position=0] The position to search from.
     * @returns {boolean} Returns `true` if `string` starts with `target`,
     *  else `false`.
     * @example
     *
     * _.startsWith('abc', 'a');
     * // => true
     *
     * _.startsWith('abc', 'b');
     * // => false
     *
     * _.startsWith('abc', 'b', 1);
     * // => true
     */
    function startsWith(string, target, position) {
      string = toString(string);
      position = position == null
        ? 0
        : baseClamp(toInteger(position), 0, string.length);

      target = baseToString(target);
      return string.slice(position, position + target.length) == target;
    }

    /**
     * Creates a compiled template function that can interpolate data properties
     * in "interpolate" delimiters, HTML-escape interpolated data properties in
     * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
     * properties may be accessed as free variables in the template. If a setting
     * object is given, it takes precedence over `_.templateSettings` values.
     *
     * **Note:** In the development build `_.template` utilizes
     * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
     * for easier debugging.
     *
     * For more information on precompiling templates see
     * [lodash's custom builds documentation](https://lodash.com/custom-builds).
     *
     * For more information on Chrome extension sandboxes see
     * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category String
     * @param {string} [string=''] The template string.
     * @param {Object} [options={}] The options object.
     * @param {RegExp} [options.escape=_.templateSettings.escape]
     *  The HTML "escape" delimiter.
     * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
     *  The "evaluate" delimiter.
     * @param {Object} [options.imports=_.templateSettings.imports]
     *  An object to import into the template as free variables.
     * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
     *  The "interpolate" delimiter.
     * @param {string} [options.sourceURL='lodash.templateSources[n]']
     *  The sourceURL of the compiled template.
     * @param {string} [options.variable='obj']
     *  The data object variable name.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the compiled template function.
     * @example
     *
     * // Use the "interpolate" delimiter to create a compiled template.
     * var compiled = _.template('hello <%= user %>!');
     * compiled({ 'user': 'fred' });
     * // => 'hello fred!'
     *
     * // Use the HTML "escape" delimiter to escape data property values.
     * var compiled = _.template('<b><%- value %></b>');
     * compiled({ 'value': '<script>' });
     * // => '<b>&lt;script&gt;</b>'
     *
     * // Use the "evaluate" delimiter to execute JavaScript and generate HTML.
     * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
     * compiled({ 'users': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // Use the internal `print` function in "evaluate" delimiters.
     * var compiled = _.template('<% print("hello " + user); %>!');
     * compiled({ 'user': 'barney' });
     * // => 'hello barney!'
     *
     * // Use the ES template literal delimiter as an "interpolate" delimiter.
     * // Disable support by replacing the "interpolate" delimiter.
     * var compiled = _.template('hello ${ user }!');
     * compiled({ 'user': 'pebbles' });
     * // => 'hello pebbles!'
     *
     * // Use backslashes to treat delimiters as plain text.
     * var compiled = _.template('<%= "\\<%- value %\\>" %>');
     * compiled({ 'value': 'ignored' });
     * // => '<%- value %>'
     *
     * // Use the `imports` option to import `jQuery` as `jq`.
     * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
     * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
     * compiled({ 'users': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // Use the `sourceURL` option to specify a custom sourceURL for the template.
     * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
     * compiled(data);
     * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector.
     *
     * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.
     * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
     * compiled.source;
     * // => function(data) {
     * //   var __t, __p = '';
     * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
     * //   return __p;
     * // }
     *
     * // Use custom template delimiters.
     * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
     * var compiled = _.template('hello {{ user }}!');
     * compiled({ 'user': 'mustache' });
     * // => 'hello mustache!'
     *
     * // Use the `source` property to inline compiled templates for meaningful
     * // line numbers in error messages and stack traces.
     * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\
     *   var JST = {\
     *     "main": ' + _.template(mainText).source + '\
     *   };\
     * ');
     */
    function template(string, options, guard) {
      // Based on John Resig's `tmpl` implementation
      // (http://ejohn.org/blog/javascript-micro-templating/)
      // and Laura Doktorova's doT.js (https://github.com/olado/doT).
      var settings = lodash.templateSettings;

      if (guard && isIterateeCall(string, options, guard)) {
        options = undefined;
      }
      string = toString(string);
      options = assignInWith({}, options, settings, customDefaultsAssignIn);

      var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
          importsKeys = keys(imports),
          importsValues = baseValues(imports, importsKeys);

      var isEscaping,
          isEvaluating,
          index = 0,
          interpolate = options.interpolate || reNoMatch,
          source = "__p += '";

      // Compile the regexp to match each delimiter.
      var reDelimiters = RegExp(
        (options.escape || reNoMatch).source + '|' +
        interpolate.source + '|' +
        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
        (options.evaluate || reNoMatch).source + '|$'
      , 'g');

      // Use a sourceURL for easier debugging.
      // The sourceURL gets injected into the source that's eval-ed, so be careful
      // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in
      // and escape the comment, thus injecting code that gets evaled.
      var sourceURL = '//# sourceURL=' +
        (hasOwnProperty.call(options, 'sourceURL')
          ? (options.sourceURL + '').replace(/\s/g, ' ')
          : ('lodash.templateSources[' + (++templateCounter) + ']')
        ) + '\n';

      string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
        interpolateValue || (interpolateValue = esTemplateValue);

        // Escape characters that can't be included in string literals.
        source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);

        // Replace delimiters with snippets.
        if (escapeValue) {
          isEscaping = true;
          source += "' +\n__e(" + escapeValue + ") +\n'";
        }
        if (evaluateValue) {
          isEvaluating = true;
          source += "';\n" + evaluateValue + ";\n__p += '";
        }
        if (interpolateValue) {
          source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
        }
        index = offset + match.length;

        // The JS engine embedded in Adobe products needs `match` returned in
        // order to produce the correct `offset` value.
        return match;
      });

      source += "';\n";

      // If `variable` is not specified wrap a with-statement around the generated
      // code to add the data object to the top of the scope chain.
      var variable = hasOwnProperty.call(options, 'variable') && options.variable;
      if (!variable) {
        source = 'with (obj) {\n' + source + '\n}\n';
      }
      // Throw an error if a forbidden character was found in `variable`, to prevent
      // potential command injection attacks.
      else if (reForbiddenIdentifierChars.test(variable)) {
        throw new Error(INVALID_TEMPL_VAR_ERROR_TEXT);
      }

      // Cleanup code by stripping empty strings.
      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
        .replace(reEmptyStringMiddle, '$1')
        .replace(reEmptyStringTrailing, '$1;');

      // Frame code as the function body.
      source = 'function(' + (variable || 'obj') + ') {\n' +
        (variable
          ? ''
          : 'obj || (obj = {});\n'
        ) +
        "var __t, __p = ''" +
        (isEscaping
           ? ', __e = _.escape'
           : ''
        ) +
        (isEvaluating
          ? ', __j = Array.prototype.join;\n' +
            "function print() { __p += __j.call(arguments, '') }\n"
          : ';\n'
        ) +
        source +
        'return __p\n}';

      var result = attempt(function() {
        return Function(importsKeys, sourceURL + 'return ' + source)
          .apply(undefined, importsValues);
      });

      // Provide the compiled function's source by its `toString` method or
      // the `source` property as a convenience for inlining compiled templates.
      result.source = source;
      if (isError(result)) {
        throw result;
      }
      return result;
    }

    /**
     * Converts `string`, as a whole, to lower case just like
     * [String#toLowerCase](https://mdn.io/toLowerCase).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the lower cased string.
     * @example
     *
     * _.toLower('--Foo-Bar--');
     * // => '--foo-bar--'
     *
     * _.toLower('fooBar');
     * // => 'foobar'
     *
     * _.toLower('__FOO_BAR__');
     * // => '__foo_bar__'
     */
    function toLower(value) {
      return toString(value).toLowerCase();
    }

    /**
     * Converts `string`, as a whole, to upper case just like
     * [String#toUpperCase](https://mdn.io/toUpperCase).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the upper cased string.
     * @example
     *
     * _.toUpper('--foo-bar--');
     * // => '--FOO-BAR--'
     *
     * _.toUpper('fooBar');
     * // => 'FOOBAR'
     *
     * _.toUpper('__foo_bar__');
     * // => '__FOO_BAR__'
     */
    function toUpper(value) {
      return toString(value).toUpperCase();
    }

    /**
     * Removes leading and trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trim('  abc  ');
     * // => 'abc'
     *
     * _.trim('-_-abc-_-', '_-');
     * // => 'abc'
     *
     * _.map(['  foo  ', '  bar  '], _.trim);
     * // => ['foo', 'bar']
     */
    function trim(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return baseTrim(string);
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          chrSymbols = stringToArray(chars),
          start = charsStartIndex(strSymbols, chrSymbols),
          end = charsEndIndex(strSymbols, chrSymbols) + 1;

      return castSlice(strSymbols, start, end).join('');
    }

    /**
     * Removes trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trimEnd('  abc  ');
     * // => '  abc'
     *
     * _.trimEnd('-_-abc-_-', '_-');
     * // => '-_-abc'
     */
    function trimEnd(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.slice(0, trimmedEndIndex(string) + 1);
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;

      return castSlice(strSymbols, 0, end).join('');
    }

    /**
     * Removes leading whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trimStart('  abc  ');
     * // => 'abc  '
     *
     * _.trimStart('-_-abc-_-', '_-');
     * // => 'abc-_-'
     */
    function trimStart(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrimStart, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          start = charsStartIndex(strSymbols, stringToArray(chars));

      return castSlice(strSymbols, start).join('');
    }

    /**
     * Truncates `string` if it's longer than the given maximum string length.
     * The last characters of the truncated string are replaced with the omission
     * string which defaults to "...".
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to truncate.
     * @param {Object} [options={}] The options object.
     * @param {number} [options.length=30] The maximum string length.
     * @param {string} [options.omission='...'] The string to indicate text is omitted.
     * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
     * @returns {string} Returns the truncated string.
     * @example
     *
     * _.truncate('hi-diddly-ho there, neighborino');
     * // => 'hi-diddly-ho there, neighbo...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'length': 24,
     *   'separator': ' '
     * });
     * // => 'hi-diddly-ho there,...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'length': 24,
     *   'separator': /,? +/
     * });
     * // => 'hi-diddly-ho there...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'omission': ' [...]'
     * });
     * // => 'hi-diddly-ho there, neig [...]'
     */
    function truncate(string, options) {
      var length = DEFAULT_TRUNC_LENGTH,
          omission = DEFAULT_TRUNC_OMISSION;

      if (isObject(options)) {
        var separator = 'separator' in options ? options.separator : separator;
        length = 'length' in options ? toInteger(options.length) : length;
        omission = 'omission' in options ? baseToString(options.omission) : omission;
      }
      string = toString(string);

      var strLength = string.length;
      if (hasUnicode(string)) {
        var strSymbols = stringToArray(string);
        strLength = strSymbols.length;
      }
      if (length >= strLength) {
        return string;
      }
      var end = length - stringSize(omission);
      if (end < 1) {
        return omission;
      }
      var result = strSymbols
        ? castSlice(strSymbols, 0, end).join('')
        : string.slice(0, end);

      if (separator === undefined) {
        return result + omission;
      }
      if (strSymbols) {
        end += (result.length - end);
      }
      if (isRegExp(separator)) {
        if (string.slice(end).search(separator)) {
          var match,
              substring = result;

          if (!separator.global) {
            separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');
          }
          separator.lastIndex = 0;
          while ((match = separator.exec(substring))) {
            var newEnd = match.index;
          }
          result = result.slice(0, newEnd === undefined ? end : newEnd);
        }
      } else if (string.indexOf(baseToString(separator), end) != end) {
        var index = result.lastIndexOf(separator);
        if (index > -1) {
          result = result.slice(0, index);
        }
      }
      return result + omission;
    }

    /**
     * The inverse of `_.escape`; this method converts the HTML entities
     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
     * their corresponding characters.
     *
     * **Note:** No other HTML entities are unescaped. To unescape additional
     * HTML entities use a third-party library like [_he_](https://mths.be/he).
     *
     * @static
     * @memberOf _
     * @since 0.6.0
     * @category String
     * @param {string} [string=''] The string to unescape.
     * @returns {string} Returns the unescaped string.
     * @example
     *
     * _.unescape('fred, barney, &amp; pebbles');
     * // => 'fred, barney, & pebbles'
     */
    function unescape(string) {
      string = toString(string);
      return (string && reHasEscapedHtml.test(string))
        ? string.replace(reEscapedHtml, unescapeHtmlChar)
        : string;
    }

    /**
     * Converts `string`, as space separated words, to upper case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the upper cased string.
     * @example
     *
     * _.upperCase('--foo-bar');
     * // => 'FOO BAR'
     *
     * _.upperCase('fooBar');
     * // => 'FOO BAR'
     *
     * _.upperCase('__foo_bar__');
     * // => 'FOO BAR'
     */
    var upperCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + word.toUpperCase();
    });

    /**
     * Converts the first character of `string` to upper case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.upperFirst('fred');
     * // => 'Fred'
     *
     * _.upperFirst('FRED');
     * // => 'FRED'
     */
    var upperFirst = createCaseFirst('toUpperCase');

    /**
     * Splits `string` into an array of its words.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {RegExp|string} [pattern] The pattern to match words.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the words of `string`.
     * @example
     *
     * _.words('fred, barney, & pebbles');
     * // => ['fred', 'barney', 'pebbles']
     *
     * _.words('fred, barney, & pebbles', /[^, ]+/g);
     * // => ['fred', 'barney', '&', 'pebbles']
     */
    function words(string, pattern, guard) {
      string = toString(string);
      pattern = guard ? undefined : pattern;

      if (pattern === undefined) {
        return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
      }
      return string.match(pattern) || [];
    }

    /*------------------------------------------------------------------------*/

    /**
     * Attempts to invoke `func`, returning either the result or the caught error
     * object. Any additional arguments are provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Function} func The function to attempt.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {*} Returns the `func` result or error object.
     * @example
     *
     * // Avoid throwing errors for invalid selectors.
     * var elements = _.attempt(function(selector) {
     *   return document.querySelectorAll(selector);
     * }, '>_>');
     *
     * if (_.isError(elements)) {
     *   elements = [];
     * }
     */
    var attempt = baseRest(function(func, args) {
      try {
        return apply(func, undefined, args);
      } catch (e) {
        return isError(e) ? e : new Error(e);
      }
    });

    /**
     * Binds methods of an object to the object itself, overwriting the existing
     * method.
     *
     * **Note:** This method doesn't set the "length" property of bound functions.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {Object} object The object to bind and assign the bound methods to.
     * @param {...(string|string[])} methodNames The object method names to bind.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var view = {
     *   'label': 'docs',
     *   'click': function() {
     *     console.log('clicked ' + this.label);
     *   }
     * };
     *
     * _.bindAll(view, ['click']);
     * jQuery(element).on('click', view.click);
     * // => Logs 'clicked docs' when clicked.
     */
    var bindAll = flatRest(function(object, methodNames) {
      arrayEach(methodNames, function(key) {
        key = toKey(key);
        baseAssignValue(object, key, bind(object[key], object));
      });
      return object;
    });

    /**
     * Creates a function that iterates over `pairs` and invokes the corresponding
     * function of the first predicate to return truthy. The predicate-function
     * pairs are invoked with the `this` binding and arguments of the created
     * function.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {Array} pairs The predicate-function pairs.
     * @returns {Function} Returns the new composite function.
     * @example
     *
     * var func = _.cond([
     *   [_.matches({ 'a': 1 }),           _.constant('matches A')],
     *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
     *   [_.stubTrue,                      _.constant('no match')]
     * ]);
     *
     * func({ 'a': 1, 'b': 2 });
     * // => 'matches A'
     *
     * func({ 'a': 0, 'b': 1 });
     * // => 'matches B'
     *
     * func({ 'a': '1', 'b': '2' });
     * // => 'no match'
     */
    function cond(pairs) {
      var length = pairs == null ? 0 : pairs.length,
          toIteratee = getIteratee();

      pairs = !length ? [] : arrayMap(pairs, function(pair) {
        if (typeof pair[1] != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        return [toIteratee(pair[0]), pair[1]];
      });

      return baseRest(function(args) {
        var index = -1;
        while (++index < length) {
          var pair = pairs[index];
          if (apply(pair[0], this, args)) {
            return apply(pair[1], this, args);
          }
        }
      });
    }

    /**
     * Creates a function that invokes the predicate properties of `source` with
     * the corresponding property values of a given object, returning `true` if
     * all predicates return truthy, else `false`.
     *
     * **Note:** The created function is equivalent to `_.conformsTo` with
     * `source` partially applied.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {Object} source The object of property predicates to conform to.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 2, 'b': 1 },
     *   { 'a': 1, 'b': 2 }
     * ];
     *
     * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));
     * // => [{ 'a': 1, 'b': 2 }]
     */
    function conforms(source) {
      return baseConforms(baseClone(source, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that returns `value`.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Util
     * @param {*} value The value to return from the new function.
     * @returns {Function} Returns the new constant function.
     * @example
     *
     * var objects = _.times(2, _.constant({ 'a': 1 }));
     *
     * console.log(objects);
     * // => [{ 'a': 1 }, { 'a': 1 }]
     *
     * console.log(objects[0] === objects[1]);
     * // => true
     */
    function constant(value) {
      return function() {
        return value;
      };
    }

    /**
     * Checks `value` to determine whether a default value should be returned in
     * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
     * or `undefined`.
     *
     * @static
     * @memberOf _
     * @since 4.14.0
     * @category Util
     * @param {*} value The value to check.
     * @param {*} defaultValue The default value.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * _.defaultTo(1, 10);
     * // => 1
     *
     * _.defaultTo(undefined, 10);
     * // => 10
     */
    function defaultTo(value, defaultValue) {
      return (value == null || value !== value) ? defaultValue : value;
    }

    /**
     * Creates a function that returns the result of invoking the given functions
     * with the `this` binding of the created function, where each successive
     * invocation is supplied the return value of the previous.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {...(Function|Function[])} [funcs] The functions to invoke.
     * @returns {Function} Returns the new composite function.
     * @see _.flowRight
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var addSquare = _.flow([_.add, square]);
     * addSquare(1, 2);
     * // => 9
     */
    var flow = createFlow();

    /**
     * This method is like `_.flow` except that it creates a function that
     * invokes the given functions from right to left.
     *
     * @static
     * @since 3.0.0
     * @memberOf _
     * @category Util
     * @param {...(Function|Function[])} [funcs] The functions to invoke.
     * @returns {Function} Returns the new composite function.
     * @see _.flow
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var addSquare = _.flowRight([square, _.add]);
     * addSquare(1, 2);
     * // => 9
     */
    var flowRight = createFlow(true);

    /**
     * This method returns the first argument it receives.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {*} value Any value.
     * @returns {*} Returns `value`.
     * @example
     *
     * var object = { 'a': 1 };
     *
     * console.log(_.identity(object) === object);
     * // => true
     */
    function identity(value) {
      return value;
    }

    /**
     * Creates a function that invokes `func` with the arguments of the created
     * function. If `func` is a property name, the created function returns the
     * property value for a given element. If `func` is an array or object, the
     * created function returns `true` for elements that contain the equivalent
     * source properties, otherwise it returns `false`.
     *
     * @static
     * @since 4.0.0
     * @memberOf _
     * @category Util
     * @param {*} [func=_.identity] The value to convert to a callback.
     * @returns {Function} Returns the callback.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
     * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.filter(users, _.iteratee(['user', 'fred']));
     * // => [{ 'user': 'fred', 'age': 40 }]
     *
     * // The `_.property` iteratee shorthand.
     * _.map(users, _.iteratee('user'));
     * // => ['barney', 'fred']
     *
     * // Create custom iteratee shorthands.
     * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
     *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
     *     return func.test(string);
     *   };
     * });
     *
     * _.filter(['abc', 'def'], /ef/);
     * // => ['def']
     */
    function iteratee(func) {
      return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that performs a partial deep comparison between a given
     * object and `source`, returning `true` if the given object has equivalent
     * property values, else `false`.
     *
     * **Note:** The created function is equivalent to `_.isMatch` with `source`
     * partially applied.
     *
     * Partial comparisons will match empty array and empty object `source`
     * values against any array or object value, respectively. See `_.isEqual`
     * for a list of supported value comparisons.
     *
     * **Note:** Multiple values can be checked by combining several matchers
     * using `_.overSome`
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Object} source The object of property values to match.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 1, 'b': 2, 'c': 3 },
     *   { 'a': 4, 'b': 5, 'c': 6 }
     * ];
     *
     * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));
     * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
     *
     * // Checking for several possible values
     * _.filter(objects, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })]));
     * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]
     */
    function matches(source) {
      return baseMatches(baseClone(source, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that performs a partial deep comparison between the
     * value at `path` of a given object to `srcValue`, returning `true` if the
     * object value is equivalent, else `false`.
     *
     * **Note:** Partial comparisons will match empty array and empty object
     * `srcValue` values against any array or object value, respectively. See
     * `_.isEqual` for a list of supported value comparisons.
     *
     * **Note:** Multiple values can be checked by combining several matchers
     * using `_.overSome`
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Util
     * @param {Array|string} path The path of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 1, 'b': 2, 'c': 3 },
     *   { 'a': 4, 'b': 5, 'c': 6 }
     * ];
     *
     * _.find(objects, _.matchesProperty('a', 4));
     * // => { 'a': 4, 'b': 5, 'c': 6 }
     *
     * // Checking for several possible values
     * _.filter(objects, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)]));
     * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]
     */
    function matchesProperty(path, srcValue) {
      return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that invokes the method at `path` of a given object.
     * Any additional arguments are provided to the invoked method.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Util
     * @param {Array|string} path The path of the method to invoke.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {Function} Returns the new invoker function.
     * @example
     *
     * var objects = [
     *   { 'a': { 'b': _.constant(2) } },
     *   { 'a': { 'b': _.constant(1) } }
     * ];
     *
     * _.map(objects, _.method('a.b'));
     * // => [2, 1]
     *
     * _.map(objects, _.method(['a', 'b']));
     * // => [2, 1]
     */
    var method = baseRest(function(path, args) {
      return function(object) {
        return baseInvoke(object, path, args);
      };
    });

    /**
     * The opposite of `_.method`; this method creates a function that invokes
     * the method at a given path of `object`. Any additional arguments are
     * provided to the invoked method.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Util
     * @param {Object} object The object to query.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {Function} Returns the new invoker function.
     * @example
     *
     * var array = _.times(3, _.constant),
     *     object = { 'a': array, 'b': array, 'c': array };
     *
     * _.map(['a[2]', 'c[0]'], _.methodOf(object));
     * // => [2, 0]
     *
     * _.map([['a', '2'], ['c', '0']], _.methodOf(object));
     * // => [2, 0]
     */
    var methodOf = baseRest(function(object, args) {
      return function(path) {
        return baseInvoke(object, path, args);
      };
    });

    /**
     * Adds all own enumerable string keyed function properties of a source
     * object to the destination object. If `object` is a function, then methods
     * are added to its prototype as well.
     *
     * **Note:** Use `_.runInContext` to create a pristine `lodash` function to
     * avoid conflicts caused by modifying the original.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {Function|Object} [object=lodash] The destination object.
     * @param {Object} source The object of functions to add.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.chain=true] Specify whether mixins are chainable.
     * @returns {Function|Object} Returns `object`.
     * @example
     *
     * function vowels(string) {
     *   return _.filter(string, function(v) {
     *     return /[aeiou]/i.test(v);
     *   });
     * }
     *
     * _.mixin({ 'vowels': vowels });
     * _.vowels('fred');
     * // => ['e']
     *
     * _('fred').vowels().value();
     * // => ['e']
     *
     * _.mixin({ 'vowels': vowels }, { 'chain': false });
     * _('fred').vowels();
     * // => ['e']
     */
    function mixin(object, source, options) {
      var props = keys(source),
          methodNames = baseFunctions(source, props);

      if (options == null &&
          !(isObject(source) && (methodNames.length || !props.length))) {
        options = source;
        source = object;
        object = this;
        methodNames = baseFunctions(source, keys(source));
      }
      var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
          isFunc = isFunction(object);

      arrayEach(methodNames, function(methodName) {
        var func = source[methodName];
        object[methodName] = func;
        if (isFunc) {
          object.prototype[methodName] = function() {
            var chainAll = this.__chain__;
            if (chain || chainAll) {
              var result = object(this.__wrapped__),
                  actions = result.__actions__ = copyArray(this.__actions__);

              actions.push({ 'func': func, 'args': arguments, 'thisArg': object });
              result.__chain__ = chainAll;
              return result;
            }
            return func.apply(object, arrayPush([this.value()], arguments));
          };
        }
      });

      return object;
    }

    /**
     * Reverts the `_` variable to its previous value and returns a reference to
     * the `lodash` function.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @returns {Function} Returns the `lodash` function.
     * @example
     *
     * var lodash = _.noConflict();
     */
    function noConflict() {
      if (root._ === this) {
        root._ = oldDash;
      }
      return this;
    }

    /**
     * This method returns `undefined`.
     *
     * @static
     * @memberOf _
     * @since 2.3.0
     * @category Util
     * @example
     *
     * _.times(2, _.noop);
     * // => [undefined, undefined]
     */
    function noop() {
      // No operation performed.
    }

    /**
     * Creates a function that gets the argument at index `n`. If `n` is negative,
     * the nth argument from the end is returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {number} [n=0] The index of the argument to return.
     * @returns {Function} Returns the new pass-thru function.
     * @example
     *
     * var func = _.nthArg(1);
     * func('a', 'b', 'c', 'd');
     * // => 'b'
     *
     * var func = _.nthArg(-2);
     * func('a', 'b', 'c', 'd');
     * // => 'c'
     */
    function nthArg(n) {
      n = toInteger(n);
      return baseRest(function(args) {
        return baseNth(args, n);
      });
    }

    /**
     * Creates a function that invokes `iteratees` with the arguments it receives
     * and returns their results.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [iteratees=[_.identity]]
     *  The iteratees to invoke.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.over([Math.max, Math.min]);
     *
     * func(1, 2, 3, 4);
     * // => [4, 1]
     */
    var over = createOver(arrayMap);

    /**
     * Creates a function that checks if **all** of the `predicates` return
     * truthy when invoked with the arguments it receives.
     *
     * Following shorthands are possible for providing predicates.
     * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
     * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [predicates=[_.identity]]
     *  The predicates to check.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.overEvery([Boolean, isFinite]);
     *
     * func('1');
     * // => true
     *
     * func(null);
     * // => false
     *
     * func(NaN);
     * // => false
     */
    var overEvery = createOver(arrayEvery);

    /**
     * Creates a function that checks if **any** of the `predicates` return
     * truthy when invoked with the arguments it receives.
     *
     * Following shorthands are possible for providing predicates.
     * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
     * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [predicates=[_.identity]]
     *  The predicates to check.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.overSome([Boolean, isFinite]);
     *
     * func('1');
     * // => true
     *
     * func(null);
     * // => true
     *
     * func(NaN);
     * // => false
     *
     * var matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }])
     * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]])
     */
    var overSome = createOver(arraySome);

    /**
     * Creates a function that returns the value at `path` of a given object.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Util
     * @param {Array|string} path The path of the property to get.
     * @returns {Function} Returns the new accessor function.
     * @example
     *
     * var objects = [
     *   { 'a': { 'b': 2 } },
     *   { 'a': { 'b': 1 } }
     * ];
     *
     * _.map(objects, _.property('a.b'));
     * // => [2, 1]
     *
     * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
     * // => [1, 2]
     */
    function property(path) {
      return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
    }

    /**
     * The opposite of `_.property`; this method creates a function that returns
     * the value at a given path of `object`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Object} object The object to query.
     * @returns {Function} Returns the new accessor function.
     * @example
     *
     * var array = [0, 1, 2],
     *     object = { 'a': array, 'b': array, 'c': array };
     *
     * _.map(['a[2]', 'c[0]'], _.propertyOf(object));
     * // => [2, 0]
     *
     * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));
     * // => [2, 0]
     */
    function propertyOf(object) {
      return function(path) {
        return object == null ? undefined : baseGet(object, path);
      };
    }

    /**
     * Creates an array of numbers (positive and/or negative) progressing from
     * `start` up to, but not including, `end`. A step of `-1` is used if a negative
     * `start` is specified without an `end` or `step`. If `end` is not specified,
     * it's set to `start` with `start` then set to `0`.
     *
     * **Note:** JavaScript follows the IEEE-754 standard for resolving
     * floating-point values which can produce unexpected results.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @param {number} [step=1] The value to increment or decrement by.
     * @returns {Array} Returns the range of numbers.
     * @see _.inRange, _.rangeRight
     * @example
     *
     * _.range(4);
     * // => [0, 1, 2, 3]
     *
     * _.range(-4);
     * // => [0, -1, -2, -3]
     *
     * _.range(1, 5);
     * // => [1, 2, 3, 4]
     *
     * _.range(0, 20, 5);
     * // => [0, 5, 10, 15]
     *
     * _.range(0, -4, -1);
     * // => [0, -1, -2, -3]
     *
     * _.range(1, 4, 0);
     * // => [1, 1, 1]
     *
     * _.range(0);
     * // => []
     */
    var range = createRange();

    /**
     * This method is like `_.range` except that it populates values in
     * descending order.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @param {number} [step=1] The value to increment or decrement by.
     * @returns {Array} Returns the range of numbers.
     * @see _.inRange, _.range
     * @example
     *
     * _.rangeRight(4);
     * // => [3, 2, 1, 0]
     *
     * _.rangeRight(-4);
     * // => [-3, -2, -1, 0]
     *
     * _.rangeRight(1, 5);
     * // => [4, 3, 2, 1]
     *
     * _.rangeRight(0, 20, 5);
     * // => [15, 10, 5, 0]
     *
     * _.rangeRight(0, -4, -1);
     * // => [-3, -2, -1, 0]
     *
     * _.rangeRight(1, 4, 0);
     * // => [1, 1, 1]
     *
     * _.rangeRight(0);
     * // => []
     */
    var rangeRight = createRange(true);

    /**
     * This method returns a new empty array.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {Array} Returns the new empty array.
     * @example
     *
     * var arrays = _.times(2, _.stubArray);
     *
     * console.log(arrays);
     * // => [[], []]
     *
     * console.log(arrays[0] === arrays[1]);
     * // => false
     */
    function stubArray() {
      return [];
    }

    /**
     * This method returns `false`.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {boolean} Returns `false`.
     * @example
     *
     * _.times(2, _.stubFalse);
     * // => [false, false]
     */
    function stubFalse() {
      return false;
    }

    /**
     * This method returns a new empty object.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {Object} Returns the new empty object.
     * @example
     *
     * var objects = _.times(2, _.stubObject);
     *
     * console.log(objects);
     * // => [{}, {}]
     *
     * console.log(objects[0] === objects[1]);
     * // => false
     */
    function stubObject() {
      return {};
    }

    /**
     * This method returns an empty string.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {string} Returns the empty string.
     * @example
     *
     * _.times(2, _.stubString);
     * // => ['', '']
     */
    function stubString() {
      return '';
    }

    /**
     * This method returns `true`.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {boolean} Returns `true`.
     * @example
     *
     * _.times(2, _.stubTrue);
     * // => [true, true]
     */
    function stubTrue() {
      return true;
    }

    /**
     * Invokes the iteratee `n` times, returning an array of the results of
     * each invocation. The iteratee is invoked with one argument; (index).
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {number} n The number of times to invoke `iteratee`.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the array of results.
     * @example
     *
     * _.times(3, String);
     * // => ['0', '1', '2']
     *
     *  _.times(4, _.constant(0));
     * // => [0, 0, 0, 0]
     */
    function times(n, iteratee) {
      n = toInteger(n);
      if (n < 1 || n > MAX_SAFE_INTEGER) {
        return [];
      }
      var index = MAX_ARRAY_LENGTH,
          length = nativeMin(n, MAX_ARRAY_LENGTH);

      iteratee = getIteratee(iteratee);
      n -= MAX_ARRAY_LENGTH;

      var result = baseTimes(length, iteratee);
      while (++index < n) {
        iteratee(index);
      }
      return result;
    }

    /**
     * Converts `value` to a property path array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {*} value The value to convert.
     * @returns {Array} Returns the new property path array.
     * @example
     *
     * _.toPath('a.b.c');
     * // => ['a', 'b', 'c']
     *
     * _.toPath('a[0].b.c');
     * // => ['a', '0', 'b', 'c']
     */
    function toPath(value) {
      if (isArray(value)) {
        return arrayMap(value, toKey);
      }
      return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));
    }

    /**
     * Generates a unique ID. If `prefix` is given, the ID is appended to it.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {string} [prefix=''] The value to prefix the ID with.
     * @returns {string} Returns the unique ID.
     * @example
     *
     * _.uniqueId('contact_');
     * // => 'contact_104'
     *
     * _.uniqueId();
     * // => '105'
     */
    function uniqueId(prefix) {
      var id = ++idCounter;
      return toString(prefix) + id;
    }

    /*------------------------------------------------------------------------*/

    /**
     * Adds two numbers.
     *
     * @static
     * @memberOf _
     * @since 3.4.0
     * @category Math
     * @param {number} augend The first number in an addition.
     * @param {number} addend The second number in an addition.
     * @returns {number} Returns the total.
     * @example
     *
     * _.add(6, 4);
     * // => 10
     */
    var add = createMathOperation(function(augend, addend) {
      return augend + addend;
    }, 0);

    /**
     * Computes `number` rounded up to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round up.
     * @param {number} [precision=0] The precision to round up to.
     * @returns {number} Returns the rounded up number.
     * @example
     *
     * _.ceil(4.006);
     * // => 5
     *
     * _.ceil(6.004, 2);
     * // => 6.01
     *
     * _.ceil(6040, -2);
     * // => 6100
     */
    var ceil = createRound('ceil');

    /**
     * Divide two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {number} dividend The first number in a division.
     * @param {number} divisor The second number in a division.
     * @returns {number} Returns the quotient.
     * @example
     *
     * _.divide(6, 4);
     * // => 1.5
     */
    var divide = createMathOperation(function(dividend, divisor) {
      return dividend / divisor;
    }, 1);

    /**
     * Computes `number` rounded down to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round down.
     * @param {number} [precision=0] The precision to round down to.
     * @returns {number} Returns the rounded down number.
     * @example
     *
     * _.floor(4.006);
     * // => 4
     *
     * _.floor(0.046, 2);
     * // => 0.04
     *
     * _.floor(4060, -2);
     * // => 4000
     */
    var floor = createRound('floor');

    /**
     * Computes the maximum value of `array`. If `array` is empty or falsey,
     * `undefined` is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {*} Returns the maximum value.
     * @example
     *
     * _.max([4, 2, 8, 6]);
     * // => 8
     *
     * _.max([]);
     * // => undefined
     */
    function max(array) {
      return (array && array.length)
        ? baseExtremum(array, identity, baseGt)
        : undefined;
    }

    /**
     * This method is like `_.max` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * the value is ranked. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {*} Returns the maximum value.
     * @example
     *
     * var objects = [{ 'n': 1 }, { 'n': 2 }];
     *
     * _.maxBy(objects, function(o) { return o.n; });
     * // => { 'n': 2 }
     *
     * // The `_.property` iteratee shorthand.
     * _.maxBy(objects, 'n');
     * // => { 'n': 2 }
     */
    function maxBy(array, iteratee) {
      return (array && array.length)
        ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)
        : undefined;
    }

    /**
     * Computes the mean of the values in `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {number} Returns the mean.
     * @example
     *
     * _.mean([4, 2, 8, 6]);
     * // => 5
     */
    function mean(array) {
      return baseMean(array, identity);
    }

    /**
     * This method is like `_.mean` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the value to be averaged.
     * The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the mean.
     * @example
     *
     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
     *
     * _.meanBy(objects, function(o) { return o.n; });
     * // => 5
     *
     * // The `_.property` iteratee shorthand.
     * _.meanBy(objects, 'n');
     * // => 5
     */
    function meanBy(array, iteratee) {
      return baseMean(array, getIteratee(iteratee, 2));
    }

    /**
     * Computes the minimum value of `array`. If `array` is empty or falsey,
     * `undefined` is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {*} Returns the minimum value.
     * @example
     *
     * _.min([4, 2, 8, 6]);
     * // => 2
     *
     * _.min([]);
     * // => undefined
     */
    function min(array) {
      return (array && array.length)
        ? baseExtremum(array, identity, baseLt)
        : undefined;
    }

    /**
     * This method is like `_.min` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * the value is ranked. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {*} Returns the minimum value.
     * @example
     *
     * var objects = [{ 'n': 1 }, { 'n': 2 }];
     *
     * _.minBy(objects, function(o) { return o.n; });
     * // => { 'n': 1 }
     *
     * // The `_.property` iteratee shorthand.
     * _.minBy(objects, 'n');
     * // => { 'n': 1 }
     */
    function minBy(array, iteratee) {
      return (array && array.length)
        ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)
        : undefined;
    }

    /**
     * Multiply two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {number} multiplier The first number in a multiplication.
     * @param {number} multiplicand The second number in a multiplication.
     * @returns {number} Returns the product.
     * @example
     *
     * _.multiply(6, 4);
     * // => 24
     */
    var multiply = createMathOperation(function(multiplier, multiplicand) {
      return multiplier * multiplicand;
    }, 1);

    /**
     * Computes `number` rounded to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round.
     * @param {number} [precision=0] The precision to round to.
     * @returns {number} Returns the rounded number.
     * @example
     *
     * _.round(4.006);
     * // => 4
     *
     * _.round(4.006, 2);
     * // => 4.01
     *
     * _.round(4060, -2);
     * // => 4100
     */
    var round = createRound('round');

    /**
     * Subtract two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {number} minuend The first number in a subtraction.
     * @param {number} subtrahend The second number in a subtraction.
     * @returns {number} Returns the difference.
     * @example
     *
     * _.subtract(6, 4);
     * // => 2
     */
    var subtract = createMathOperation(function(minuend, subtrahend) {
      return minuend - subtrahend;
    }, 0);

    /**
     * Computes the sum of the values in `array`.
     *
     * @static
     * @memberOf _
     * @since 3.4.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {number} Returns the sum.
     * @example
     *
     * _.sum([4, 2, 8, 6]);
     * // => 20
     */
    function sum(array) {
      return (array && array.length)
        ? baseSum(array, identity)
        : 0;
    }

    /**
     * This method is like `_.sum` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the value to be summed.
     * The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the sum.
     * @example
     *
     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
     *
     * _.sumBy(objects, function(o) { return o.n; });
     * // => 20
     *
     * // The `_.property` iteratee shorthand.
     * _.sumBy(objects, 'n');
     * // => 20
     */
    function sumBy(array, iteratee) {
      return (array && array.length)
        ? baseSum(array, getIteratee(iteratee, 2))
        : 0;
    }

    /*------------------------------------------------------------------------*/

    // Add methods that return wrapped values in chain sequences.
    lodash.after = after;
    lodash.ary = ary;
    lodash.assign = assign;
    lodash.assignIn = assignIn;
    lodash.assignInWith = assignInWith;
    lodash.assignWith = assignWith;
    lodash.at = at;
    lodash.before = before;
    lodash.bind = bind;
    lodash.bindAll = bindAll;
    lodash.bindKey = bindKey;
    lodash.castArray = castArray;
    lodash.chain = chain;
    lodash.chunk = chunk;
    lodash.compact = compact;
    lodash.concat = concat;
    lodash.cond = cond;
    lodash.conforms = conforms;
    lodash.constant = constant;
    lodash.countBy = countBy;
    lodash.create = create;
    lodash.curry = curry;
    lodash.curryRight = curryRight;
    lodash.debounce = debounce;
    lodash.defaults = defaults;
    lodash.defaultsDeep = defaultsDeep;
    lodash.defer = defer;
    lodash.delay = delay;
    lodash.difference = difference;
    lodash.differenceBy = differenceBy;
    lodash.differenceWith = differenceWith;
    lodash.drop = drop;
    lodash.dropRight = dropRight;
    lodash.dropRightWhile = dropRightWhile;
    lodash.dropWhile = dropWhile;
    lodash.fill = fill;
    lodash.filter = filter;
    lodash.flatMap = flatMap;
    lodash.flatMapDeep = flatMapDeep;
    lodash.flatMapDepth = flatMapDepth;
    lodash.flatten = flatten;
    lodash.flattenDeep = flattenDeep;
    lodash.flattenDepth = flattenDepth;
    lodash.flip = flip;
    lodash.flow = flow;
    lodash.flowRight = flowRight;
    lodash.fromPairs = fromPairs;
    lodash.functions = functions;
    lodash.functionsIn = functionsIn;
    lodash.groupBy = groupBy;
    lodash.initial = initial;
    lodash.intersection = intersection;
    lodash.intersectionBy = intersectionBy;
    lodash.intersectionWith = intersectionWith;
    lodash.invert = invert;
    lodash.invertBy = invertBy;
    lodash.invokeMap = invokeMap;
    lodash.iteratee = iteratee;
    lodash.keyBy = keyBy;
    lodash.keys = keys;
    lodash.keysIn = keysIn;
    lodash.map = map;
    lodash.mapKeys = mapKeys;
    lodash.mapValues = mapValues;
    lodash.matches = matches;
    lodash.matchesProperty = matchesProperty;
    lodash.memoize = memoize;
    lodash.merge = merge;
    lodash.mergeWith = mergeWith;
    lodash.method = method;
    lodash.methodOf = methodOf;
    lodash.mixin = mixin;
    lodash.negate = negate;
    lodash.nthArg = nthArg;
    lodash.omit = omit;
    lodash.omitBy = omitBy;
    lodash.once = once;
    lodash.orderBy = orderBy;
    lodash.over = over;
    lodash.overArgs = overArgs;
    lodash.overEvery = overEvery;
    lodash.overSome = overSome;
    lodash.partial = partial;
    lodash.partialRight = partialRight;
    lodash.partition = partition;
    lodash.pick = pick;
    lodash.pickBy = pickBy;
    lodash.property = property;
    lodash.propertyOf = propertyOf;
    lodash.pull = pull;
    lodash.pullAll = pullAll;
    lodash.pullAllBy = pullAllBy;
    lodash.pullAllWith = pullAllWith;
    lodash.pullAt = pullAt;
    lodash.range = range;
    lodash.rangeRight = rangeRight;
    lodash.rearg = rearg;
    lodash.reject = reject;
    lodash.remove = remove;
    lodash.rest = rest;
    lodash.reverse = reverse;
    lodash.sampleSize = sampleSize;
    lodash.set = set;
    lodash.setWith = setWith;
    lodash.shuffle = shuffle;
    lodash.slice = slice;
    lodash.sortBy = sortBy;
    lodash.sortedUniq = sortedUniq;
    lodash.sortedUniqBy = sortedUniqBy;
    lodash.split = split;
    lodash.spread = spread;
    lodash.tail = tail;
    lodash.take = take;
    lodash.takeRight = takeRight;
    lodash.takeRightWhile = takeRightWhile;
    lodash.takeWhile = takeWhile;
    lodash.tap = tap;
    lodash.throttle = throttle;
    lodash.thru = thru;
    lodash.toArray = toArray;
    lodash.toPairs = toPairs;
    lodash.toPairsIn = toPairsIn;
    lodash.toPath = toPath;
    lodash.toPlainObject = toPlainObject;
    lodash.transform = transform;
    lodash.unary = unary;
    lodash.union = union;
    lodash.unionBy = unionBy;
    lodash.unionWith = unionWith;
    lodash.uniq = uniq;
    lodash.uniqBy = uniqBy;
    lodash.uniqWith = uniqWith;
    lodash.unset = unset;
    lodash.unzip = unzip;
    lodash.unzipWith = unzipWith;
    lodash.update = update;
    lodash.updateWith = updateWith;
    lodash.values = values;
    lodash.valuesIn = valuesIn;
    lodash.without = without;
    lodash.words = words;
    lodash.wrap = wrap;
    lodash.xor = xor;
    lodash.xorBy = xorBy;
    lodash.xorWith = xorWith;
    lodash.zip = zip;
    lodash.zipObject = zipObject;
    lodash.zipObjectDeep = zipObjectDeep;
    lodash.zipWith = zipWith;

    // Add aliases.
    lodash.entries = toPairs;
    lodash.entriesIn = toPairsIn;
    lodash.extend = assignIn;
    lodash.extendWith = assignInWith;

    // Add methods to `lodash.prototype`.
    mixin(lodash, lodash);

    /*------------------------------------------------------------------------*/

    // Add methods that return unwrapped values in chain sequences.
    lodash.add = add;
    lodash.attempt = attempt;
    lodash.camelCase = camelCase;
    lodash.capitalize = capitalize;
    lodash.ceil = ceil;
    lodash.clamp = clamp;
    lodash.clone = clone;
    lodash.cloneDeep = cloneDeep;
    lodash.cloneDeepWith = cloneDeepWith;
    lodash.cloneWith = cloneWith;
    lodash.conformsTo = conformsTo;
    lodash.deburr = deburr;
    lodash.defaultTo = defaultTo;
    lodash.divide = divide;
    lodash.endsWith = endsWith;
    lodash.eq = eq;
    lodash.escape = escape;
    lodash.escapeRegExp = escapeRegExp;
    lodash.every = every;
    lodash.find = find;
    lodash.findIndex = findIndex;
    lodash.findKey = findKey;
    lodash.findLast = findLast;
    lodash.findLastIndex = findLastIndex;
    lodash.findLastKey = findLastKey;
    lodash.floor = floor;
    lodash.forEach = forEach;
    lodash.forEachRight = forEachRight;
    lodash.forIn = forIn;
    lodash.forInRight = forInRight;
    lodash.forOwn = forOwn;
    lodash.forOwnRight = forOwnRight;
    lodash.get = get;
    lodash.gt = gt;
    lodash.gte = gte;
    lodash.has = has;
    lodash.hasIn = hasIn;
    lodash.head = head;
    lodash.identity = identity;
    lodash.includes = includes;
    lodash.indexOf = indexOf;
    lodash.inRange = inRange;
    lodash.invoke = invoke;
    lodash.isArguments = isArguments;
    lodash.isArray = isArray;
    lodash.isArrayBuffer = isArrayBuffer;
    lodash.isArrayLike = isArrayLike;
    lodash.isArrayLikeObject = isArrayLikeObject;
    lodash.isBoolean = isBoolean;
    lodash.isBuffer = isBuffer;
    lodash.isDate = isDate;
    lodash.isElement = isElement;
    lodash.isEmpty = isEmpty;
    lodash.isEqual = isEqual;
    lodash.isEqualWith = isEqualWith;
    lodash.isError = isError;
    lodash.isFinite = isFinite;
    lodash.isFunction = isFunction;
    lodash.isInteger = isInteger;
    lodash.isLength = isLength;
    lodash.isMap = isMap;
    lodash.isMatch = isMatch;
    lodash.isMatchWith = isMatchWith;
    lodash.isNaN = isNaN;
    lodash.isNative = isNative;
    lodash.isNil = isNil;
    lodash.isNull = isNull;
    lodash.isNumber = isNumber;
    lodash.isObject = isObject;
    lodash.isObjectLike = isObjectLike;
    lodash.isPlainObject = isPlainObject;
    lodash.isRegExp = isRegExp;
    lodash.isSafeInteger = isSafeInteger;
    lodash.isSet = isSet;
    lodash.isString = isString;
    lodash.isSymbol = isSymbol;
    lodash.isTypedArray = isTypedArray;
    lodash.isUndefined = isUndefined;
    lodash.isWeakMap = isWeakMap;
    lodash.isWeakSet = isWeakSet;
    lodash.join = join;
    lodash.kebabCase = kebabCase;
    lodash.last = last;
    lodash.lastIndexOf = lastIndexOf;
    lodash.lowerCase = lowerCase;
    lodash.lowerFirst = lowerFirst;
    lodash.lt = lt;
    lodash.lte = lte;
    lodash.max = max;
    lodash.maxBy = maxBy;
    lodash.mean = mean;
    lodash.meanBy = meanBy;
    lodash.min = min;
    lodash.minBy = minBy;
    lodash.stubArray = stubArray;
    lodash.stubFalse = stubFalse;
    lodash.stubObject = stubObject;
    lodash.stubString = stubString;
    lodash.stubTrue = stubTrue;
    lodash.multiply = multiply;
    lodash.nth = nth;
    lodash.noConflict = noConflict;
    lodash.noop = noop;
    lodash.now = now;
    lodash.pad = pad;
    lodash.padEnd = padEnd;
    lodash.padStart = padStart;
    lodash.parseInt = parseInt;
    lodash.random = random;
    lodash.reduce = reduce;
    lodash.reduceRight = reduceRight;
    lodash.repeat = repeat;
    lodash.replace = replace;
    lodash.result = result;
    lodash.round = round;
    lodash.runInContext = runInContext;
    lodash.sample = sample;
    lodash.size = size;
    lodash.snakeCase = snakeCase;
    lodash.some = some;
    lodash.sortedIndex = sortedIndex;
    lodash.sortedIndexBy = sortedIndexBy;
    lodash.sortedIndexOf = sortedIndexOf;
    lodash.sortedLastIndex = sortedLastIndex;
    lodash.sortedLastIndexBy = sortedLastIndexBy;
    lodash.sortedLastIndexOf = sortedLastIndexOf;
    lodash.startCase = startCase;
    lodash.startsWith = startsWith;
    lodash.subtract = subtract;
    lodash.sum = sum;
    lodash.sumBy = sumBy;
    lodash.template = template;
    lodash.times = times;
    lodash.toFinite = toFinite;
    lodash.toInteger = toInteger;
    lodash.toLength = toLength;
    lodash.toLower = toLower;
    lodash.toNumber = toNumber;
    lodash.toSafeInteger = toSafeInteger;
    lodash.toString = toString;
    lodash.toUpper = toUpper;
    lodash.trim = trim;
    lodash.trimEnd = trimEnd;
    lodash.trimStart = trimStart;
    lodash.truncate = truncate;
    lodash.unescape = unescape;
    lodash.uniqueId = uniqueId;
    lodash.upperCase = upperCase;
    lodash.upperFirst = upperFirst;

    // Add aliases.
    lodash.each = forEach;
    lodash.eachRight = forEachRight;
    lodash.first = head;

    mixin(lodash, (function() {
      var source = {};
      baseForOwn(lodash, function(func, methodName) {
        if (!hasOwnProperty.call(lodash.prototype, methodName)) {
          source[methodName] = func;
        }
      });
      return source;
    }()), { 'chain': false });

    /*------------------------------------------------------------------------*/

    /**
     * The semantic version number.
     *
     * @static
     * @memberOf _
     * @type {string}
     */
    lodash.VERSION = VERSION;

    // Assign default placeholders.
    arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {
      lodash[methodName].placeholder = lodash;
    });

    // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
    arrayEach(['drop', 'take'], function(methodName, index) {
      LazyWrapper.prototype[methodName] = function(n) {
        n = n === undefined ? 1 : nativeMax(toInteger(n), 0);

        var result = (this.__filtered__ && !index)
          ? new LazyWrapper(this)
          : this.clone();

        if (result.__filtered__) {
          result.__takeCount__ = nativeMin(n, result.__takeCount__);
        } else {
          result.__views__.push({
            'size': nativeMin(n, MAX_ARRAY_LENGTH),
            'type': methodName + (result.__dir__ < 0 ? 'Right' : '')
          });
        }
        return result;
      };

      LazyWrapper.prototype[methodName + 'Right'] = function(n) {
        return this.reverse()[methodName](n).reverse();
      };
    });

    // Add `LazyWrapper` methods that accept an `iteratee` value.
    arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {
      var type = index + 1,
          isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;

      LazyWrapper.prototype[methodName] = function(iteratee) {
        var result = this.clone();
        result.__iteratees__.push({
          'iteratee': getIteratee(iteratee, 3),
          'type': type
        });
        result.__filtered__ = result.__filtered__ || isFilter;
        return result;
      };
    });

    // Add `LazyWrapper` methods for `_.head` and `_.last`.
    arrayEach(['head', 'last'], function(methodName, index) {
      var takeName = 'take' + (index ? 'Right' : '');

      LazyWrapper.prototype[methodName] = function() {
        return this[takeName](1).value()[0];
      };
    });

    // Add `LazyWrapper` methods for `_.initial` and `_.tail`.
    arrayEach(['initial', 'tail'], function(methodName, index) {
      var dropName = 'drop' + (index ? '' : 'Right');

      LazyWrapper.prototype[methodName] = function() {
        return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);
      };
    });

    LazyWrapper.prototype.compact = function() {
      return this.filter(identity);
    };

    LazyWrapper.prototype.find = function(predicate) {
      return this.filter(predicate).head();
    };

    LazyWrapper.prototype.findLast = function(predicate) {
      return this.reverse().find(predicate);
    };

    LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {
      if (typeof path == 'function') {
        return new LazyWrapper(this);
      }
      return this.map(function(value) {
        return baseInvoke(value, path, args);
      });
    });

    LazyWrapper.prototype.reject = function(predicate) {
      return this.filter(negate(getIteratee(predicate)));
    };

    LazyWrapper.prototype.slice = function(start, end) {
      start = toInteger(start);

      var result = this;
      if (result.__filtered__ && (start > 0 || end < 0)) {
        return new LazyWrapper(result);
      }
      if (start < 0) {
        result = result.takeRight(-start);
      } else if (start) {
        result = result.drop(start);
      }
      if (end !== undefined) {
        end = toInteger(end);
        result = end < 0 ? result.dropRight(-end) : result.take(end - start);
      }
      return result;
    };

    LazyWrapper.prototype.takeRightWhile = function(predicate) {
      return this.reverse().takeWhile(predicate).reverse();
    };

    LazyWrapper.prototype.toArray = function() {
      return this.take(MAX_ARRAY_LENGTH);
    };

    // Add `LazyWrapper` methods to `lodash.prototype`.
    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
      var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),
          isTaker = /^(?:head|last)$/.test(methodName),
          lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],
          retUnwrapped = isTaker || /^find/.test(methodName);

      if (!lodashFunc) {
        return;
      }
      lodash.prototype[methodName] = function() {
        var value = this.__wrapped__,
            args = isTaker ? [1] : arguments,
            isLazy = value instanceof LazyWrapper,
            iteratee = args[0],
            useLazy = isLazy || isArray(value);

        var interceptor = function(value) {
          var result = lodashFunc.apply(lodash, arrayPush([value], args));
          return (isTaker && chainAll) ? result[0] : result;
        };

        if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {
          // Avoid lazy use if the iteratee has a "length" value other than `1`.
          isLazy = useLazy = false;
        }
        var chainAll = this.__chain__,
            isHybrid = !!this.__actions__.length,
            isUnwrapped = retUnwrapped && !chainAll,
            onlyLazy = isLazy && !isHybrid;

        if (!retUnwrapped && useLazy) {
          value = onlyLazy ? value : new LazyWrapper(this);
          var result = func.apply(value, args);
          result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined });
          return new LodashWrapper(result, chainAll);
        }
        if (isUnwrapped && onlyLazy) {
          return func.apply(this, args);
        }
        result = this.thru(interceptor);
        return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;
      };
    });

    // Add `Array` methods to `lodash.prototype`.
    arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
      var func = arrayProto[methodName],
          chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
          retUnwrapped = /^(?:pop|shift)$/.test(methodName);

      lodash.prototype[methodName] = function() {
        var args = arguments;
        if (retUnwrapped && !this.__chain__) {
          var value = this.value();
          return func.apply(isArray(value) ? value : [], args);
        }
        return this[chainName](function(value) {
          return func.apply(isArray(value) ? value : [], args);
        });
      };
    });

    // Map minified method names to their real names.
    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
      var lodashFunc = lodash[methodName];
      if (lodashFunc) {
        var key = lodashFunc.name + '';
        if (!hasOwnProperty.call(realNames, key)) {
          realNames[key] = [];
        }
        realNames[key].push({ 'name': methodName, 'func': lodashFunc });
      }
    });

    realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{
      'name': 'wrapper',
      'func': undefined
    }];

    // Add methods to `LazyWrapper`.
    LazyWrapper.prototype.clone = lazyClone;
    LazyWrapper.prototype.reverse = lazyReverse;
    LazyWrapper.prototype.value = lazyValue;

    // Add chain sequence methods to the `lodash` wrapper.
    lodash.prototype.at = wrapperAt;
    lodash.prototype.chain = wrapperChain;
    lodash.prototype.commit = wrapperCommit;
    lodash.prototype.next = wrapperNext;
    lodash.prototype.plant = wrapperPlant;
    lodash.prototype.reverse = wrapperReverse;
    lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;

    // Add lazy aliases.
    lodash.prototype.first = lodash.prototype.head;

    if (symIterator) {
      lodash.prototype[symIterator] = wrapperToIterator;
    }
    return lodash;
  });

  /*--------------------------------------------------------------------------*/

  // Export lodash.
  var _ = runInContext();

  // Some AMD build optimizers, like r.js, check for condition patterns like:
  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
    // Expose Lodash on the global object to prevent errors when Lodash is
    // loaded by a script tag in the presence of an AMD loader.
    // See http://requirejs.org/docs/errors.html#mismatch for more details.
    // Use `_.noConflict` to remove Lodash from the global object.
    root._ = _;

    // Define as an anonymous module so, through path mapping, it can be
    // referenced as the "underscore" module.
    define(function() {
      return _;
    });
  }
  // Check for `exports` after `define` in case a build optimizer adds it.
  else if (freeModule) {
    // Export for Node.js.
    (freeModule.exports = _)._ = _;
    // Export for CommonJS support.
    freeExports._ = _;
  }
  else {
    // Export to the global object.
    root._ = _;
  }
}.call(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],13:[function(require,module,exports){
// shim for using process in browser

var process = module.exports = {};
var queue = [];
var draining = false;

function drainQueue() {
    if (draining) {
        return;
    }
    draining = true;
    var currentQueue;
    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        var i = -1;
        while (++i < len) {
            currentQueue[i]();
        }
        len = queue.length;
    }
    draining = false;
}
process.nextTick = function (fun) {
    queue.push(fun);
    if (!draining) {
        setTimeout(drainQueue, 0);
    }
};

process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],14:[function(require,module,exports){
arguments[4][6][0].apply(exports,arguments)
},{"dup":6}],15:[function(require,module,exports){
arguments[4][7][0].apply(exports,arguments)
},{"dup":7}],16:[function(require,module,exports){
arguments[4][8][0].apply(exports,arguments)
},{"./support/isBuffer":15,"_process":13,"dup":8,"inherits":14}],17:[function(require,module,exports){
/*
 * Lexical analysis and token construction.
 */

"use strict";

var _      = require("lodash");
var events = require("events");
var reg    = require("./reg.js");
var state  = require("./state.js").state;

var unicodeData = require("../data/ascii-identifier-data.js");
var asciiIdentifierStartTable = unicodeData.asciiIdentifierStartTable;
var asciiIdentifierPartTable = unicodeData.asciiIdentifierPartTable;
var nonAsciiIdentifierStartTable = require("../data/non-ascii-identifier-start.js");
var nonAsciiIdentifierPartTable = require("../data/non-ascii-identifier-part-only.js");
// Loading of this module is deferred as an optimization for ES2015 input
var es5IdentifierNames;

// Some of these token types are from JavaScript Parser API
// while others are specific to JSHint parser.
// JS Parser API: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API

var Token = {
  Identifier: 1,
  Punctuator: 2,
  NumericLiteral: 3,
  StringLiteral: 4,
  Comment: 5,
  Keyword: 6,
  RegExp: 9,
  TemplateHead: 10,
  TemplateMiddle: 11,
  TemplateTail: 12,
  NoSubstTemplate: 13
};

var Context = {
  Block: 1,
  Template: 2
};

function isHex(str) {
  return /^[0-9a-fA-F]+$/.test(str);
}

function isHexDigit(str) {
  return str.length === 1 && isHex(str);
}

// Object that handles postponed lexing verifications that checks the parsed
// environment state.

function asyncTrigger() {
  var _checks = [];

  return {
    push: function(fn) {
      _checks.push(fn);
    },

    check: function() {
      for (var check = 0; check < _checks.length; ++check) {
        _checks[check]();
      }

      _checks.splice(0, _checks.length);
    }
  };
}

/*
 * Lexer for JSHint.
 *
 * This object does a char-by-char scan of the provided source code
 * and produces a sequence of tokens.
 *
 *   var lex = new Lexer("var i = 0;");
 *   lex.start();
 *   lex.token(); // returns the next token
 *
 * You have to use the token() method to move the lexer forward
 * but you don't have to use its return value to get tokens. In addition
 * to token() method returning the next token, the Lexer object also
 * emits events.
 *
 *   lex.on("Identifier", function(data) {
 *     if (data.name.indexOf("_") >= 0) {
 *       // Produce a warning.
 *     }
 *   });
 *
 * Note that the token() method returns tokens in a JSLint-compatible
 * format while the event emitter uses a slightly modified version of
 * Mozilla's JavaScript Parser API. Eventually, we will move away from
 * JSLint format.
 */
function Lexer(source) {
  var lines = source;

  if (typeof lines === "string") {
    lines = lines
      .replace(/\r\n/g, "\n")
      .replace(/\r/g, "\n")
      .split("\n");
  }

  // If the first line is a shebang (#!), make it a blank and move on.
  // Shebangs are used by Node scripts.

  if (lines[0] && lines[0].substr(0, 2) === "#!") {
    if (lines[0].indexOf("node") !== -1) {
      state.option.node = true;
    }
    lines[0] = "";
  }

  this.emitter = new events.EventEmitter();
  this.source = source;
  this.setLines(lines);
  this.prereg = true;

  this.line = 0;
  this.char = 1;
  this.from = 1;
  this.input = "";
  this.inComment = false;
  this.context = [];
  this.templateStarts = [];

  for (var i = 0; i < state.option.indent; i += 1) {
    state.tab += " ";
  }
}

Lexer.prototype = {
  _lines: [],

  inContext: function(ctxType) {
    return this.context.length > 0 && this.context[this.context.length - 1].type === ctxType;
  },

  pushContext: function(ctxType) {
    this.context.push({ type: ctxType });
  },

  popContext: function() {
    return this.context.pop();
  },

  currentContext: function() {
    return this.context.length > 0 && this.context[this.context.length - 1];
  },

  getLines: function() {
    this._lines = state.lines;
    return this._lines;
  },

  setLines: function(val) {
    this._lines = val;
    state.lines = this._lines;
  },

  /*
   * Return the next i character without actually moving the
   * char pointer.
   */
  peek: function(i) {
    return this.input.charAt(i || 0);
  },

  /*
   * Move the char pointer forward i times.
   */
  skip: function(i) {
    i = i || 1;
    this.char += i;
    this.input = this.input.slice(i);
  },

  /*
   * Subscribe to a token event. The API for this method is similar
   * Underscore.js i.e. you can subscribe to multiple events with
   * one call:
   *
   *   lex.on("Identifier Number", function(data) {
   *     // ...
   *   });
   */
  on: function(names, listener) {
    names.split(" ").forEach(function(name) {
      this.emitter.on(name, listener);
    }.bind(this));
  },

  /*
   * Trigger a token event. All arguments will be passed to each
   * listener.
   */
  trigger: function() {
    this.emitter.emit.apply(this.emitter, Array.prototype.slice.call(arguments));
  },

  /*
   * Postpone a token event. the checking condition is set as
   * last parameter, and the trigger function is called in a
   * stored callback. To be later called using the check() function
   * by the parser. This avoids parser's peek() to give the lexer
   * a false context.
   */
  triggerAsync: function(type, args, checks, fn) {
    checks.push(function() {
      if (fn()) {
        this.trigger(type, args);
      }
    }.bind(this));
  },

  /*
   * Extract a punctuator out of the next sequence of characters
   * or return 'null' if its not possible.
   *
   * This method's implementation was heavily influenced by the
   * scanPunctuator function in the Esprima parser's source code.
   */
  scanPunctuator: function() {
    var ch1 = this.peek();
    var ch2, ch3, ch4;

    switch (ch1) {
    // Most common single-character punctuators
    case ".":
      if ((/^[0-9]$/).test(this.peek(1))) {
        return null;
      }
      if (this.peek(1) === "." && this.peek(2) === ".") {
        return {
          type: Token.Punctuator,
          value: "..."
        };
      }
      /* falls through */
    case "(":
    case ")":
    case ";":
    case ",":
    case "[":
    case "]":
    case ":":
    case "~":
      return {
        type: Token.Punctuator,
        value: ch1
      };

    // A block/object opener
    case "{":
      this.pushContext(Context.Block);
      return {
        type: Token.Punctuator,
        value: ch1
      };

    // A block/object closer
    case "}":
      if (this.inContext(Context.Block)) {
        this.popContext();
      }
      return {
        type: Token.Punctuator,
        value: ch1
      };

    // A pound sign (for Node shebangs)
    case "#":
      return {
        type: Token.Punctuator,
        value: ch1
      };

    // We're at the end of input
    case "":
      return null;
    }

    // Peek more characters

    ch2 = this.peek(1);
    ch3 = this.peek(2);

    if (ch1 === "?") {
      // Optional chaining
      if (ch2 === "." && !reg.decimalDigit.test(ch3)) {
        return {
          type: Token.Punctuator,
          value: "?."
        };
      }

      return {
        type: Token.Punctuator,
        value: ch2 === "?" ? "??" : "?"
      };
    }

    ch4 = this.peek(3);

    // 4-character punctuator: >>>=

    if (ch1 === ">" && ch2 === ">" && ch3 === ">" && ch4 === "=") {
      return {
        type: Token.Punctuator,
        value: ">>>="
      };
    }

    // 3-character punctuators: === !== >>> <<= >>=

    if (ch1 === "=" && ch2 === "=" && ch3 === "=") {
      return {
        type: Token.Punctuator,
        value: "==="
      };
    }

    if (ch1 === "!" && ch2 === "=" && ch3 === "=") {
      return {
        type: Token.Punctuator,
        value: "!=="
      };
    }

    if (ch1 === ">" && ch2 === ">" && ch3 === ">") {
      return {
        type: Token.Punctuator,
        value: ">>>"
      };
    }

    if (ch1 === "<" && ch2 === "<" && ch3 === "=") {
      return {
        type: Token.Punctuator,
        value: "<<="
      };
    }

    if (ch1 === ">" && ch2 === ">" && ch3 === "=") {
      return {
        type: Token.Punctuator,
        value: ">>="
      };
    }

    // Fat arrow punctuator
    if (ch1 === "=" && ch2 === ">") {
      return {
        type: Token.Punctuator,
        value: ch1 + ch2
      };
    }

    // 2-character punctuators: ++ -- << >> && || **
    if (ch1 === ch2 && ("+-<>&|*".indexOf(ch1) >= 0)) {
      if (ch1 === "*" && ch3 === "=") {
        return {
          type: Token.Punctuator,
          value: ch1 + ch2 + ch3
        };
      }

      return {
        type: Token.Punctuator,
        value: ch1 + ch2
      };
    }

    // <= >= != += -= *= %= &= |= ^= /=
    if ("<>=!+-*%&|^/".indexOf(ch1) >= 0) {
      if (ch2 === "=") {
        return {
          type: Token.Punctuator,
          value: ch1 + ch2
        };
      }

      return {
        type: Token.Punctuator,
        value: ch1
      };
    }

    return null;
  },

  /*
   * Extract a comment out of the next sequence of characters and/or
   * lines or return 'null' if its not possible. Since comments can
   * span across multiple lines this method has to move the char
   * pointer.
   *
   * In addition to normal JavaScript comments (// and /*) this method
   * also recognizes JSHint- and JSLint-specific comments such as
   * /*jshint, /*jslint, /*globals and so on.
   */
  scanComments: function(checks) {
    var ch1 = this.peek();
    var ch2 = this.peek(1);
    var rest = this.input.substr(2);
    var startLine = this.line;
    var startChar = this.char;
    var self = this;

    // Create a comment token object and make sure it
    // has all the data JSHint needs to work with special
    // comments.

    function commentToken(label, body, opt) {
      var special = [
        "jshint", "jshint.unstable", "jslint", "members", "member", "globals",
        "global", "exported"
      ];
      var isSpecial = false;
      var value = label + body;
      var commentType = "plain";
      opt = opt || {};

      if (opt.isMultiline) {
        value += "*/";
      }

      body = body.replace(/\n/g, " ");

      if (label === "/*" && reg.fallsThrough.test(body)) {
        isSpecial = true;
        commentType = "falls through";
      }

      special.forEach(function(str) {
        if (isSpecial) {
          return;
        }

        // Don't recognize any special comments other than jshint for single-line
        // comments. This introduced many problems with legit comments.
        if (label === "//" && str !== "jshint" && str !== "jshint.unstable") {
          return;
        }

        if (body.charAt(str.length) === " " && body.substr(0, str.length) === str) {
          isSpecial = true;
          label = label + str;
          body = body.substr(str.length);
        }

        if (!isSpecial && body.charAt(0) === " " && body.charAt(str.length + 1) === " " &&
          body.substr(1, str.length) === str) {
          isSpecial = true;
          label = label + " " + str;
          body = body.substr(str.length + 1);
        }

        // To handle rarer case when special word is separated from label by
        // multiple spaces or tabs
        var strIndex = body.indexOf(str);
        if (!isSpecial && strIndex >= 0 && body.charAt(strIndex + str.length) === " ") {
          var isAllWhitespace = body.substr(0, strIndex).trim().length === 0;
          if (isAllWhitespace) {
            isSpecial = true;
            body = body.substr(str.length + strIndex);
          }
        }

        if (!isSpecial) {
          return;
        }

        switch (str) {
        case "member":
          commentType = "members";
          break;
        case "global":
          commentType = "globals";
          break;
        default:
          var options = body.split(":").map(function(v) {
            return v.replace(/^\s+/, "").replace(/\s+$/, "");
          });

          if (options.length === 2) {
            switch (options[0]) {
            case "ignore":
              switch (options[1]) {
              case "start":
                self.ignoringLinterErrors = true;
                isSpecial = false;
                break;
              case "end":
                self.ignoringLinterErrors = false;
                isSpecial = false;
                break;
              }
            }
          }

          commentType = str;
        }
      });

      return {
        type: Token.Comment,
        commentType: commentType,
        value: value,
        body: body,
        isSpecial: isSpecial,
        isMalformed: opt.isMalformed || false
      };
    }

    // End of unbegun comment. Raise an error and skip that input.
    if (ch1 === "*" && ch2 === "/") {
      this.trigger("error", {
        code: "E018",
        line: startLine,
        character: startChar
      });

      this.skip(2);
      return null;
    }

    // Comments must start either with // or /*
    if (ch1 !== "/" || (ch2 !== "*" && ch2 !== "/")) {
      return null;
    }

    // One-line comment
    if (ch2 === "/") {
      this.skip(this.input.length); // Skip to the EOL.
      return commentToken("//", rest);
    }

    var body = "";

    /* Multi-line comment */
    if (ch2 === "*") {
      this.inComment = true;
      this.skip(2);

      while (this.peek() !== "*" || this.peek(1) !== "/") {
        if (this.peek() === "") { // End of Line
          body += "\n";

          // If we hit EOF and our comment is still unclosed,
          // trigger an error and end the comment implicitly.
          if (!this.nextLine(checks)) {
            this.trigger("error", {
              code: "E017",
              line: startLine,
              character: startChar
            });

            this.inComment = false;
            return commentToken("/*", body, {
              isMultiline: true,
              isMalformed: true
            });
          }
        } else {
          body += this.peek();
          this.skip();
        }
      }

      this.skip(2);
      this.inComment = false;
      return commentToken("/*", body, { isMultiline: true });
    }
  },

  /*
   * Extract a keyword out of the next sequence of characters or
   * return 'null' if its not possible.
   */
  scanKeyword: function() {
    var result = /^[a-zA-Z_$][a-zA-Z0-9_$]*/.exec(this.input);
    var keywords = [
      "if", "in", "do", "var", "for", "new",
      "try", "let", "this", "else", "case",
      "void", "with", "enum", "while", "break",
      "catch", "throw", "const", "yield", "class",
      "super", "return", "typeof", "delete",
      "switch", "export", "import", "default",
      "finally", "extends", "function", "continue",
      "debugger", "instanceof", "true", "false", "null", "async", "await"
    ];

    if (result && keywords.indexOf(result[0]) >= 0) {
      return {
        type: Token.Keyword,
        value: result[0]
      };
    }

    return null;
  },

  /*
   * Extract a JavaScript identifier out of the next sequence of
   * characters or return 'null' if its not possible.
   */
  scanIdentifier: function(checks) {
    var id = "";
    var index = 0;
    var char, value;

    function isNonAsciiIdentifierStart(code) {
      return nonAsciiIdentifierStartTable.indexOf(code) > -1;
    }

    function isNonAsciiIdentifierPart(code) {
      return isNonAsciiIdentifierStart(code) || nonAsciiIdentifierPartTable.indexOf(code) > -1;
    }

    var readUnicodeEscapeSequence = function() {
      /*jshint validthis:true */
      index += 1;

      if (this.peek(index) !== "u") {
        return null;
      }

      var sequence = this.peek(index + 1) + this.peek(index + 2) +
        this.peek(index + 3) + this.peek(index + 4);
      var code;

      if (isHex(sequence)) {
        code = parseInt(sequence, 16);

        if (asciiIdentifierPartTable[code] || isNonAsciiIdentifierPart(code)) {
          index += 5;
          return "\\u" + sequence;
        }

        return null;
      }

      return null;
    }.bind(this);

    var getIdentifierStart = function() {
      /*jshint validthis:true */
      var chr = this.peek(index);
      var code = chr.charCodeAt(0);

      if (code === 92) {
        return readUnicodeEscapeSequence();
      }

      if (code < 128) {
        if (asciiIdentifierStartTable[code]) {
          index += 1;
          return chr;
        }

        return null;
      }

      if (isNonAsciiIdentifierStart(code)) {
        index += 1;
        return chr;
      }

      return null;
    }.bind(this);

    var getIdentifierPart = function() {
      /*jshint validthis:true */
      var chr = this.peek(index);
      var code = chr.charCodeAt(0);

      if (code === 92) {
        return readUnicodeEscapeSequence();
      }

      if (code < 128) {
        if (asciiIdentifierPartTable[code]) {
          index += 1;
          return chr;
        }

        return null;
      }

      if (isNonAsciiIdentifierPart(code)) {
        index += 1;
        return chr;
      }

      return null;
    }.bind(this);

    function removeEscapeSequences(id) {
      return id.replace(/\\u([0-9a-fA-F]{4})/g, function(m0, codepoint) {
        return String.fromCharCode(parseInt(codepoint, 16));
      });
    }

    char = getIdentifierStart();
    if (char === null) {
      return null;
    }

    id = char;
    for (;;) {
      char = getIdentifierPart();

      if (char === null) {
        break;
      }

      id += char;
    }

    value = removeEscapeSequences(id);

    if (!state.inES6(true)) {
      es5IdentifierNames = require("../data/es5-identifier-names.js");

      if (!es5IdentifierNames.test(value)) {
        this.triggerAsync(
          "warning",
          {
            code: "W119",
            line: this.line,
            character: this.char,
            data: ["unicode 8", "6"]
          },
          checks,
          function() { return true; }
        );
      }
    }

    return {
      type: Token.Identifier,
      value: value,
      text: id,
      tokenLength: id.length
    };
  },

  /*
   * Extract a numeric literal out of the next sequence of
   * characters or return 'null' if its not possible. This method
   * supports all numeric literals described in section 7.8.3
   * of the EcmaScript 5 specification.
   *
   * This method's implementation was heavily influenced by the
   * scanNumericLiteral function in the Esprima parser's source code.
   */
  scanNumericLiteral: function(checks) {
    var index = 0;
    var value = "";
    var length = this.input.length;
    var char = this.peek(index);
    var isAllowedDigit = isDecimalDigit;
    var base = 10;
    var isLegacy = false;
    var isNonOctal = false;

    function isDecimalDigit(str) {
      return (/^[0-9]$/).test(str);
    }

    function isOctalDigit(str) {
      return (/^[0-7]$/).test(str);
    }

    function isNonOctalDigit(str) {
      return str === "8" || str === "9";
    }

    function isBinaryDigit(str) {
      return (/^[01]$/).test(str);
    }

    function isIdentifierStart(ch) {
      return (ch === "$") || (ch === "_") || (ch === "\\") ||
        (ch >= "a" && ch <= "z") || (ch >= "A" && ch <= "Z");
    }

    // Numbers must start either with a decimal digit or a point.

    if (char !== "." && !isDecimalDigit(char)) {
      return null;
    }

    if (char !== ".") {
      value = this.peek(index);
      index += 1;
      char = this.peek(index);

      if (value === "0") {
        // Base-16 numbers.
        if (char === "x" || char === "X") {
          isAllowedDigit = isHexDigit;
          base = 16;

          index += 1;
          value += char;
        }

        // Base-8 numbers.
        if (char === "o" || char === "O") {
          isAllowedDigit = isOctalDigit;
          base = 8;

          if (!state.inES6(true)) {
            this.triggerAsync(
              "warning",
              {
                code: "W119",
                line: this.line,
                character: this.char,
                data: [ "Octal integer literal", "6" ]
              },
              checks,
              function() { return true; }
            );
          }

          index += 1;
          value += char;
        }

        // Base-2 numbers.
        if (char === "b" || char === "B") {
          isAllowedDigit = isBinaryDigit;
          base = 2;

          if (!state.inES6(true)) {
            this.triggerAsync(
              "warning",
              {
                code: "W119",
                line: this.line,
                character: this.char,
                data: [ "Binary integer literal", "6" ]
              },
              checks,
              function() { return true; }
            );
          }

          index += 1;
          value += char;
        }

        // Legacy base-8 numbers.
        if (isOctalDigit(char)) {
          isAllowedDigit = isOctalDigit;
          base = 8;
          isLegacy = true;

        } else if (isDecimalDigit(char)) {
          isNonOctal = true;
        }
      }

      while (index < length) {
        char = this.peek(index);

        if (isLegacy && isNonOctalDigit(char)) {
          base = 10;
          isLegacy = false;
          isNonOctal = true;
          isAllowedDigit = isDecimalDigit;
        }

        if (!isAllowedDigit(char)) {
          break;
        }
        value += char;
        index += 1;
      }

      var isBigInt = this.peek(index) === 'n';

      if (isAllowedDigit !== isDecimalDigit || isBigInt) {
        if (isBigInt) {
          this.triggerAsync(
            "warning",
            {
              code: "W119",
              line: this.line,
              character: this.char,
              data: [ "BigInt", "11" ]
            },
            checks,
            function() { return !state.inES11(); }
          );

          if (isLegacy || isNonOctal) {
            this.triggerAsync(
              "error",
              {
                code: "E067",
                line: this.line,
                character: this.char,
                data: [value + char]
              },
              checks,
              function() { return true; }
            );
          }

          value += char;
          index += 1;
        } else if (!isLegacy && value.length <= 2) { // 0x
          return {
            type: Token.NumericLiteral,
            value: value,
            isMalformed: true
          };
        }

        if (index < length) {
          char = this.peek(index);
          if (isIdentifierStart(char)) {
            return null;
          }
        }

        return {
          type: Token.NumericLiteral,
          value: value,
          base: base,
          isLegacy: isLegacy,
          isMalformed: false
        };
      }
    }

    // Decimal digits.

    if (char === ".") {
      value += char;
      index += 1;

      while (index < length) {
        char = this.peek(index);
        if (!isDecimalDigit(char)) {
          break;
        }
        value += char;
        index += 1;
      }
    }

    // Exponent part.

    if (char === "e" || char === "E") {
      value += char;
      index += 1;
      char = this.peek(index);

      if (char === "+" || char === "-") {
        value += this.peek(index);
        index += 1;
      }

      char = this.peek(index);
      if (isDecimalDigit(char)) {
        value += char;
        index += 1;

        while (index < length) {
          char = this.peek(index);
          if (!isDecimalDigit(char)) {
            break;
          }
          value += char;
          index += 1;
        }
      } else {
        return null;
      }
    }

    if (index < length) {
      char = this.peek(index);
      if (isIdentifierStart(char)) {
        return null;
      }
    }

    // TODO: Extend this check to other numeric literals
    this.triggerAsync("warning", {
      code: "W045",
      line: this.line,
      character: this.char + value.length,
      data: [ value ]
    }, checks, function() { return !isFinite(value); });

    return {
      type: Token.NumericLiteral,
      value: value,
      base: base,
      isNonOctal: isNonOctal,
      isMalformed: false
    };
  },


  // Assumes previously parsed character was \ (=== '\\') and was not skipped.
  scanEscapeSequence: function(checks) {
    var allowNewLine = false;
    var jump = 1;
    this.skip();
    var char = this.peek();

    switch (char) {
    case "'":
      this.triggerAsync("warning", {
        code: "W114",
        line: this.line,
        character: this.char,
        data: [ "\\'" ]
      }, checks, function() {return state.jsonMode; });
      break;
    case "b":
      char = "\\b";
      break;
    case "f":
      char = "\\f";
      break;
    case "n":
      char = "\\n";
      break;
    case "r":
      char = "\\r";
      break;
    case "t":
      char = "\\t";
      break;
    case "0":
      char = "\\0";

      // Octal literals fail in strict mode.
      // Check if the number is between 00 and 07.
      var n = parseInt(this.peek(1), 10);
      this.triggerAsync("warning", {
        code: "W115",
        line: this.line,
        character: this.char
      }, checks,
      function() { return n >= 0 && n <= 7 && state.isStrict(); });
      break;
    case "1":
    case "2":
    case "3":
    case "4":
    case "5":
    case "6":
    case "7":
      char = "\\" + char;
      this.triggerAsync("warning", {
        code: "W115",
        line: this.line,
        character: this.char
      }, checks,
      function() { return state.isStrict(); });
      break;
    case "u":
      var sequence = this.input.substr(1, 4);
      var code = parseInt(sequence, 16);
      if (!isHex(sequence)) {
        // This condition unequivocally describes a syntax error.
        // TODO: Re-factor as an "error" (not a "warning").
        this.trigger("warning", {
          code: "W052",
          line: this.line,
          character: this.char,
          data: [ "u" + sequence ]
        });
      }
      char = String.fromCharCode(code);
      jump = 5;
      break;
    case "v":
      this.triggerAsync("warning", {
        code: "W114",
        line: this.line,
        character: this.char,
        data: [ "\\v" ]
      }, checks, function() { return state.jsonMode; });

      char = "\v";
      break;
    case "x":
      var  x = parseInt(this.input.substr(1, 2), 16);

      this.triggerAsync("warning", {
        code: "W114",
        line: this.line,
        character: this.char,
        data: [ "\\x-" ]
      }, checks, function() { return state.jsonMode; });

      char = String.fromCharCode(x);
      jump = 3;
      break;
    case "\\":
      char = "\\\\";
      break;
    case "/":
      break;
    case "":
      allowNewLine = true;
      char = "";
      break;
    }

    return { char: char, jump: jump, allowNewLine: allowNewLine };
  },

  /*
   * Extract a template literal out of the next sequence of characters
   * and/or lines or return 'null' if its not possible. Since template
   * literals can span across multiple lines, this method has to move
   * the char pointer.
   */
  scanTemplateLiteral: function(checks) {
    var tokenType;
    var value = "";
    var ch;
    var startLine = this.line;
    var startChar = this.char;
    var depth = this.templateStarts.length;

    if (this.peek() === "`") {
      if (!state.inES6(true)) {
        this.triggerAsync(
          "warning",
          {
            code: "W119",
            line: this.line,
            character: this.char,
            data: ["template literal syntax", "6"]
          },
          checks,
          function() { return true; }
        );
      }
      // Template must start with a backtick.
      tokenType = Token.TemplateHead;
      this.templateStarts.push({ line: this.line, char: this.char });
      depth = this.templateStarts.length;
      this.skip(1);
      this.pushContext(Context.Template);
    } else if (this.inContext(Context.Template) && this.peek() === "}") {
      // If we're in a template context, and we have a '}', lex a TemplateMiddle.
      tokenType = Token.TemplateMiddle;
    } else {
      // Go lex something else.
      return null;
    }

    while (this.peek() !== "`") {
      while ((ch = this.peek()) === "") {
        value += "\n";
        if (!this.nextLine(checks)) {
          // Unclosed template literal --- point to the starting "`"
          var startPos = this.templateStarts.pop();
          this.trigger("error", {
            code: "E052",
            line: startPos.line,
            character: startPos.char
          });
          return {
            type: tokenType,
            value: value,
            startLine: startLine,
            startChar: startChar,
            isUnclosed: true,
            depth: depth,
            context: this.popContext()
          };
        }
      }

      if (ch === '$' && this.peek(1) === '{') {
        value += '${';
        this.skip(2);
        return {
          type: tokenType,
          value: value,
          startLine: startLine,
          startChar: startChar,
          isUnclosed: false,
          depth: depth,
          context: this.currentContext()
        };
      } else if (ch === '\\') {
        var escape = this.scanEscapeSequence(checks);
        value += escape.char;
        this.skip(escape.jump);
      } else if (ch !== '`') {
        // Otherwise, append the value and continue.
        value += ch;
        this.skip(1);
      }
    }

    // Final value is either NoSubstTemplate or TemplateTail
    tokenType = tokenType === Token.TemplateHead ? Token.NoSubstTemplate : Token.TemplateTail;
    this.skip(1);
    this.templateStarts.pop();

    return {
      type: tokenType,
      value: value,
      startLine: startLine,
      startChar: startChar,
      isUnclosed: false,
      depth: depth,
      context: this.popContext()
    };
  },

  /*
   * Extract a string out of the next sequence of characters and/or
   * lines or return 'null' if its not possible. Since strings can
   * span across multiple lines this method has to move the char
   * pointer.
   *
   * This method recognizes pseudo-multiline JavaScript strings:
   *
   *   var str = "hello\
   *   world";
   */
  scanStringLiteral: function(checks) {
    /*jshint loopfunc:true */
    var quote = this.peek();

    // String must start with a quote.
    if (quote !== "\"" && quote !== "'") {
      return null;
    }

    // In JSON strings must always use double quotes.
    this.triggerAsync("warning", {
      code: "W108",
      line: this.line,
      character: this.char // +1?
    }, checks, function() { return state.jsonMode && quote !== "\""; });

    var value = "";
    var startLine = this.line;
    var startChar = this.char;
    var allowNewLine = false;

    this.skip();

    while (this.peek() !== quote) {
      if (this.peek() === "") { // End Of Line

        // If an EOL is not preceded by a backslash, show a warning
        // and proceed like it was a legit multi-line string where
        // author simply forgot to escape the newline symbol.
        //
        // Another approach is to implicitly close a string on EOL
        // but it generates too many false positives.

        if (!allowNewLine) {
          // This condition unequivocally describes a syntax error.
          // TODO: Emit error E029 and remove W112.
          this.trigger("warning", {
            code: "W112",
            line: this.line,
            character: this.char
          });
        } else {
          allowNewLine = false;

          // Otherwise show a warning if multistr option was not set.
          // For JSON, show warning no matter what.

          this.triggerAsync("warning", {
            code: "W043",
            line: this.line,
            character: this.char
          }, checks, function() { return !state.option.multistr; });

          this.triggerAsync("warning", {
            code: "W042",
            line: this.line,
            character: this.char
          }, checks, function() { return state.jsonMode && state.option.multistr; });
        }

        // If we get an EOF inside of an unclosed string, show an
        // error and implicitly close it at the EOF point.

        if (!this.nextLine(checks)) {
          return {
            type: Token.StringLiteral,
            value: value,
            startLine: startLine,
            startChar: startChar,
            isUnclosed: true,
            quote: quote
          };
        }

      } else { // Any character other than End Of Line

        allowNewLine = false;
        var char = this.peek();
        var jump = 1; // A length of a jump, after we're done
                      // parsing this character.

        if (char < " ") {
          // Warn about a control character in a string.
          this.triggerAsync(
            "warning",
            {
              code: "W113",
              line: this.line,
              character: this.char,
              data: [ "<non-printable>" ]
            },
            checks,
            function() { return true; }
          );
        }

        // Special treatment for some escaped characters.
        if (char === "\\") {
          var parsed = this.scanEscapeSequence(checks);
          char = parsed.char;
          jump = parsed.jump;
          allowNewLine = parsed.allowNewLine;
        }

        // If char is the empty string, end of the line has been reached. In
        // this case, `this.char` should not be incremented so that warnings
        // and errors reported in the subsequent loop iteration have the
        // correct character column offset.
        if (char !== "") {
          value += char;
          this.skip(jump);
        }
      }
    }

    this.skip();
    return {
      type: Token.StringLiteral,
      value: value,
      startLine: startLine,
      startChar: startChar,
      isUnclosed: false,
      quote: quote
    };
  },

  /*
   * Extract a regular expression out of the next sequence of
   * characters and/or lines or return 'null' if its not possible.
   *
   * This method is platform dependent: it accepts almost any
   * regular expression values but then tries to compile and run
   * them using system's RegExp object. This means that there are
   * rare edge cases where one JavaScript engine complains about
   * your regular expression while others don't.
   */
  scanRegExp: function(checks) {
    var index = 0;
    var length = this.input.length;
    var char = this.peek();
    var value = char;
    var body = "";
    var groupReferences = [];
    var allFlags = "";
    var es5Flags = "";
    var malformed = false;
    var isCharSet = false;
    var isCharSetRange = false;
    var isGroup = false;
    var isQuantifiable = false;
    var hasInvalidQuantifier = false;
    var escapedChars = "";
    var hasUFlag = function() { return allFlags.indexOf("u") > -1; };
    var escapeSequence;
    var groupCount = 0;
    var terminated, malformedDesc;

    var scanRegexpEscapeSequence = function() {
      var next, sequence;
      index += 1;
      char = this.peek(index);

      if (reg.nonzeroDigit.test(char)) {
        sequence = char;
        next = this.peek(index + 1);
        while (reg.nonzeroDigit.test(next) || next === "0") {
          index += 1;
          char = next;
          sequence += char;
          body += char;
          value += char;
          next = this.peek(index + 1);
        }
        groupReferences.push(Number(sequence));
        return sequence;
      }

      escapedChars += char;

      if (char === "u" && this.peek(index + 1) === "{") {
        var x = index + 2;
        sequence = "u{";
        next = this.peek(x);
        while (isHex(next)) {
          sequence += next;
          x += 1;
          next = this.peek(x);
        }

        if (next !== "}") {
          this.triggerAsync(
            "error",
            {
              code: "E016",
              line: this.line,
              character: this.char,
              data: [ "Invalid Unicode escape sequence" ]
            },
            checks,
            hasUFlag
          );
        } else if (sequence.length > 2) {
          sequence += "}";
          body += sequence;
          value += sequence;
          index = x + 1;
          return sequence;
        }
      }

      if (char === "p" || char === "P") {
        var y = index + 2;
        sequence = "";
        next = "";

        if (this.peek(index + 1) === "{") {
          next = this.peek(y);
          while (next && next !== "}") {
            sequence += next;
            y += 1;
            next = this.peek(y);
          }
        }

        // Module loading is intentionally deferred as an optimization for
        // Node.js users who do not use Unicode escape sequences.
        if (!sequence || !require("./validate-unicode-escape-sequence")(sequence)) {
          this.triggerAsync(
            "error",
            {
              code: "E016",
              line: this.line,
              character: this.char,
              data: [ "Invalid Unicode property escape sequence" ]
            },
            checks,
            hasUFlag
          );
        }

        if (sequence) {
          sequence = char + "{" + sequence + "}";
          body += sequence;
          value += sequence;
          index = y + 1;

          if (!state.inES9()) {
            this.triggerAsync(
              "warning",
              {
                code: "W119",
                line: this.line,
                character: this.char,
                data: [ "Unicode property escape", "9" ]
              },
              checks,
              hasUFlag
            );
          }

          return sequence;
        }
      }

      // Unexpected control character
      if (char < " ") {
        malformed = true;
        this.triggerAsync(
          "warning",
          {
            code: "W048",
            line: this.line,
            character: this.char
          },
          checks,
          function() { return true; }
        );
      }

      // Unexpected escaped character
      if (char === "<") {
        malformed = true;
        this.triggerAsync(
          "warning",
          {
            code: "W049",
            line: this.line,
            character: this.char,
            data: [ char ]
          },
          checks,
          function() { return true; }
        );
      } else if (char === "0" && reg.decimalDigit.test(this.peek(index + 1))) {
        this.triggerAsync(
          "error",
          {
            code: "E016",
            line: this.line,
            character: this.char,
            data: [ "Invalid decimal escape sequence" ]
          },
          checks,
          hasUFlag
        );
      }

      index += 1;
      body += char;
      value += char;

      return char;
    }.bind(this);

    var checkQuantifier = function() {
      var lookahead = index;
      var lowerBound = "";
      var upperBound = "";
      var next;

      next = this.peek(lookahead + 1);

      while (reg.decimalDigit.test(next)) {
        lookahead += 1;
        lowerBound += next;
        next = this.peek(lookahead + 1);
      }

      if (!lowerBound) {
        return false;
      }

      if (next === "}") {
        return true;
      }

      if (next !== ",") {
        return false;
      }

      lookahead += 1;
      next = this.peek(lookahead + 1);

      while (reg.decimalDigit.test(next)) {
        lookahead += 1;
        upperBound += next;
        next = this.peek(lookahead + 1);
      }

      if (next !== "}") {
        return false;
      }

      if (upperBound) {
        return Number(lowerBound) <= Number(upperBound);
      }

      return true;
    }.bind(this);

    var translateUFlag = function(body) {
      // The BMP character to use as a replacement for astral symbols when
      // translating an ES6 "u"-flagged pattern to an ES5-compatible
      // approximation.
      // Note: replacing with '\uFFFF' enables false positives in unlikely
      // scenarios. For example, `[\u{1044f}-\u{10440}]` is an invalid pattern
      // that would not be detected by this substitution.
      var astralSubstitute = "\uFFFF";

      return body
        // Replace every Unicode escape sequence with the equivalent BMP
        // character or a constant ASCII code point in the case of astral
        // symbols. (See the above note on `astralSubstitute` for more
        // information.)
        .replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, function($0, $1, $2) {
          var codePoint = parseInt($1 || $2, 16);
          var literal;

          if (codePoint > 0x10FFFF) {
            malformed = true;
            this.trigger("error", {
              code: "E016",
              line: this.line,
              character: this.char,
              data: [ char ]
            });

            return;
          }
          literal = String.fromCharCode(codePoint);

          if (reg.regexpSyntaxChars.test(literal)) {
            return $0;
          }

          if (codePoint <= 0xFFFF) {
            return String.fromCharCode(codePoint);
          }
          return astralSubstitute;
        }.bind(this))
        // Replace each paired surrogate with a single ASCII symbol to avoid
        // throwing on regular expressions that are only valid in combination
        // with the "u" flag.
        .replace(
          /[\uD800-\uDBFF][\uDC00-\uDFFF]/g,
          astralSubstitute
        );
    }.bind(this);

    // Regular expressions must start with '/'
    if (!this.prereg || char !== "/") {
      return null;
    }

    index += 1;
    terminated = false;

    // Try to get everything in between slashes. A couple of
    // cases aside (see scanRegexpEscapeSequence) we don't really
    // care whether the resulting expression is valid or not.
    // We will check that later using the RegExp object.

    while (index < length) {
      // Because an iteration of this loop may terminate in a number of
      // distinct locations, `isCharSetRange` is re-set at the onset of
      // iteration.
      isCharSetRange &= char === "-";
      char = this.peek(index);
      value += char;
      body += char;

      if (isCharSet) {
        if (char === "]") {
          if (this.peek(index - 1) !== "\\" || this.peek(index - 2) === "\\") {
            isCharSet = false;
          }
        } else if (char === "-") {
          isCharSetRange = true;
        }
      }

      if (char === "\\") {
        escapeSequence = scanRegexpEscapeSequence();

        if (isCharSet && (this.peek(index) === "-" || isCharSetRange) &&
          reg.regexpCharClasses.test(escapeSequence)) {
          this.triggerAsync(
            "error",
            {
              code: "E016",
              line: this.line,
              character: this.char,
              data: [ "Character class used in range" ]
            },
            checks,
            hasUFlag
          );
        }

        continue;
      }

      if (isCharSet) {
        index += 1;
        continue;
      }

      if (char === "{" && !hasInvalidQuantifier) {
        hasInvalidQuantifier = !checkQuantifier();
      }

      if (char === "[") {
        isCharSet = true;
        index += 1;
        continue;
      } else if (char === "(") {
        isGroup = true;

        if (this.peek(index + 1) === "?" &&
          (this.peek(index + 2) === "=" || this.peek(index + 2) === "!")) {
          isQuantifiable = true;
        }
      } else if (char === ")") {
        if (isQuantifiable) {
          isQuantifiable = false;

          if (reg.regexpQuantifiers.test(this.peek(index + 1))) {
            this.triggerAsync(
              "error",
              {
                code: "E016",
                line: this.line,
                character: this.char,
                data: [ "Quantified quantifiable" ]
              },
              checks,
              hasUFlag
            );
          }
        } else {
          groupCount += 1;
        }

        isGroup = false;
      } else if (char === "/") {
        body = body.substr(0, body.length - 1);
        terminated = true;
        index += 1;
        break;
      }

      index += 1;
    }

    // A regular expression that was never closed is an
    // error from which we cannot recover.

    if (!terminated) {
      this.trigger("error", {
        code: "E015",
        line: this.line,
        character: this.from
      });

      return void this.trigger("fatal", {
        line: this.line,
        from: this.from
      });
    }

    // Parse flags (if any).

    while (index < length) {
      char = this.peek(index);
      if (!/[gimyus]/.test(char)) {
        break;
      }
      if (char === "y") {
        if (!state.inES6(true)) {
          this.triggerAsync(
            "warning",
            {
              code: "W119",
              line: this.line,
              character: this.char,
              data: [ "Sticky RegExp flag", "6" ]
            },
            checks,
            function() { return true; }
          );
        }
      } else if (char === "u") {
        if (!state.inES6(true)) {
          this.triggerAsync(
            "warning",
            {
              code: "W119",
              line: this.line,
              character: this.char,
              data: [ "Unicode RegExp flag", "6" ]
            },
            checks,
            function() { return true; }
          );
        }

        var hasInvalidEscape = (function(groupReferences, groupCount, escapedChars, reg) {
          var hasInvalidGroup = groupReferences.some(function(groupReference) {
            if (groupReference > groupCount) {
              return true;
            }
          });

          if (hasInvalidGroup) {
            return true;
          }

          return !escapedChars.split("").every(function(escapedChar) {
              return escapedChar === "u" ||
                escapedChar === "/" ||
                escapedChar === "0" ||
                reg.regexpControlEscapes.test(escapedChar) ||
                reg.regexpCharClasses.test(escapedChar) ||
                reg.regexpSyntaxChars.test(escapedChar);
            });
        }(groupReferences, groupCount, escapedChars, reg));

        if (hasInvalidEscape) {
          malformedDesc = "Invalid escape";
        } else if (hasInvalidQuantifier) {
          malformedDesc = "Invalid quantifier";
        }

        body = translateUFlag(body);
      } else if (char === "s") {
        if (!state.inES9()) {
          this.triggerAsync(
            "warning",
            {
              code: "W119",
              line: this.line,
              character: this.char,
              data: [ "DotAll RegExp flag", "9" ]
            },
            checks,
            function() { return true; }
          );
        }
        if (value.indexOf("s") > -1) {
          malformedDesc = "Duplicate RegExp flag";
        }
      } else {
        es5Flags += char;
      }

      if (allFlags.indexOf(char) > -1) {
        malformedDesc = "Duplicate RegExp flag";
      }
      allFlags += char;

      value += char;
      allFlags += char;
      index += 1;
    }

    if (allFlags.indexOf("u") === -1) {
      this.triggerAsync("warning", {
        code: "W147",
        line: this.line,
        character: this.char
      }, checks, function() { return state.option.regexpu; });
    }

    // Check regular expression for correctness.

    try {
      new RegExp(body, es5Flags);
    } catch (err) {
      /**
       * Because JSHint relies on the current engine's RegExp parser to
       * validate RegExp literals, the description (exposed as the "data"
       * property on the error object) is platform dependent.
       */
      malformedDesc = err.message;
    }

    if (malformedDesc) {
      malformed = true;
      this.trigger("error", {
        code: "E016",
        line: this.line,
        character: this.char,
        data: [ malformedDesc ]
      });
    } else if (allFlags.indexOf("s") > -1 && !reg.regexpDot.test(body)) {
      this.trigger("warning", {
        code: "W148",
        line: this.line,
        character: this.char
      });
    }

    return {
      type: Token.RegExp,
      value: value,
      isMalformed: malformed
    };
  },

  /*
   * Scan for any occurrence of non-breaking spaces. Non-breaking spaces
   * can be mistakenly typed on OS X with option-space. Non UTF-8 web
   * pages with non-breaking pages produce syntax errors.
   */
  scanNonBreakingSpaces: function() {
    return state.option.nonbsp ?
      this.input.search(/(\u00A0)/) : -1;
  },

  /*
   * Produce the next raw token or return 'null' if no tokens can be matched.
   * This method skips over all space characters.
   */
  next: function(checks) {
    this.from = this.char;

    // Move to the next non-space character.
    while (reg.whitespace.test(this.peek())) {
      this.from += 1;
      this.skip();
    }

    // Methods that work with multi-line structures and move the
    // character pointer.

    var match = this.scanComments(checks) ||
      this.scanStringLiteral(checks) ||
      this.scanTemplateLiteral(checks);

    if (match) {
      return match;
    }

    // Methods that don't move the character pointer.

    match =
      this.scanRegExp(checks) ||
      this.scanPunctuator() ||
      this.scanKeyword() ||
      this.scanIdentifier(checks) ||
      this.scanNumericLiteral(checks);

    if (match) {
      this.skip(match.tokenLength || match.value.length);
      return match;
    }

    // No token could be matched, give up.

    return null;
  },

  /*
   * Switch to the next line and reset all char pointers. Once
   * switched, this method also checks for other minor warnings.
   */
  nextLine: function(checks) {
    var char;

    if (this.line >= this.getLines().length) {
      return false;
    }

    this.input = this.getLines()[this.line];
    this.line += 1;
    this.char = 1;
    this.from = 1;

    var inputTrimmed = this.input.trim();

    var startsWith = function() {
      return _.some(arguments, function(prefix) {
        return inputTrimmed.indexOf(prefix) === 0;
      });
    };

    var endsWith = function() {
      return _.some(arguments, function(suffix) {
        return inputTrimmed.indexOf(suffix, inputTrimmed.length - suffix.length) !== -1;
      });
    };

    // If we are ignoring linter errors, replace the input with empty string
    // if it doesn't already at least start or end a multi-line comment
    if (this.ignoringLinterErrors === true) {
      if (!startsWith("/*", "//") && !(this.inComment && endsWith("*/"))) {
        this.input = "";
      }
    }

    char = this.scanNonBreakingSpaces();
    if (char >= 0) {
      this.triggerAsync(
        "warning",
        { code: "W125", line: this.line, character: char + 1 },
        checks,
        function() { return true; }
      );
    }

    this.input = this.input.replace(/\t/g, state.tab);

    // If there is a limit on line length, warn when lines get too
    // long.

    if (!this.ignoringLinterErrors && state.option.maxlen &&
      state.option.maxlen < this.input.length) {
      var inComment = this.inComment ||
        startsWith.call(inputTrimmed, "//") ||
        startsWith.call(inputTrimmed, "/*");

      var shouldTriggerError = !inComment || !reg.maxlenException.test(inputTrimmed);

      if (shouldTriggerError) {
        this.triggerAsync(
          "warning",
          { code: "W101", line: this.line, character: this.input.length },
          checks,
          function() { return true; }
        );
      }
    }

    return true;
  },

  /*
   * Produce the next token. This function is called by advance() to get
   * the next token. It returns a token in a JSLint-compatible format.
   */
  token: function() {
    /*jshint loopfunc:true */
    var checks = asyncTrigger();
    var token;

    // Produce a token object.
    var create = function(type, value, isProperty, token) {
      /*jshint validthis:true */
      var obj;

      if (type !== "(endline)" && type !== "(end)") {
        this.prereg = false;
      }

      if (type === "(punctuator)") {
        switch (value) {
        case ".":
        case ")":
        case "~":
        case "#":
        case "]":
        case "}":
        case "++":
        case "--":
          this.prereg = false;
          break;
        default:
          this.prereg = true;
        }

        obj = Object.create(state.syntax[value] || state.syntax["(error)"]);
      }

      if (type === "(identifier)") {
        if (value === "return" || value === "case" || value === "yield" ||
            value === "typeof" || value === "instanceof" || value === "void" ||
            value === "await" || value === "new" || value === "delete" ||
            value === "default" || value === "extends") {
          this.prereg = true;
        }

        if (_.has(state.syntax, value)) {
          obj = Object.create(state.syntax[value] || state.syntax["(error)"]);
        }
      }

      if (type === "(template)" || type === "(template middle)") {
        this.prereg = true;
      }

      if (!obj) {
        obj = Object.create(state.syntax[type]);
      }

      obj.identifier = (type === "(identifier)");
      obj.type = obj.type || type;
      obj.value = value;
      obj.line = this.line;
      obj.character = this.char;
      obj.from = this.from;
      if (obj.identifier && token) obj.raw_text = token.text || token.value;
      if (token && token.startLine && token.startLine !== this.line) {
        obj.startLine = token.startLine;
      }
      if (token && token.context) {
        // Context of current token
        obj.context = token.context;
      }
      if (token && token.depth) {
        // Nested template depth
        obj.depth = token.depth;
      }
      if (token && token.isUnclosed) {
        // Mark token as unclosed string / template literal
        obj.isUnclosed = token.isUnclosed;
      }

      if (isProperty && obj.identifier) {
        obj.isProperty = isProperty;
      }

      obj.check = checks.check;

      return obj;
    }.bind(this);

    for (;;) {
      if (!this.input.length) {
        if (this.nextLine(checks)) {
          return create("(endline)", "");
        }

        if (this.exhausted) {
          return null;
        }

        this.exhausted = true;
        return create("(end)", "");
      }

      token = this.next(checks);

      if (!token) {
        if (this.input.length) {
          // Unexpected character.
          this.trigger("error", {
            code: "E024",
            line: this.line,
            character: this.char,
            data: [ this.peek() ]
          });

          this.input = "";
        }

        continue;
      }

      switch (token.type) {
      case Token.StringLiteral:
        this.triggerAsync("String", {
          line: this.line,
          char: this.char,
          from: this.from,
          startLine: token.startLine,
          startChar: token.startChar,
          value: token.value,
          quote: token.quote
        }, checks, function() { return true; });

        return create("(string)", token.value, null, token);

      case Token.TemplateHead:
        this.trigger("TemplateHead", {
          line: this.line,
          char: this.char,
          from: this.from,
          startLine: token.startLine,
          startChar: token.startChar,
          value: token.value
        });
        return create("(template)", token.value, null, token);

      case Token.TemplateMiddle:
        this.trigger("TemplateMiddle", {
          line: this.line,
          char: this.char,
          from: this.from,
          startLine: token.startLine,
          startChar: token.startChar,
          value: token.value
        });
        return create("(template middle)", token.value, null, token);

      case Token.TemplateTail:
        this.trigger("TemplateTail", {
          line: this.line,
          char: this.char,
          from: this.from,
          startLine: token.startLine,
          startChar: token.startChar,
          value: token.value
        });
        return create("(template tail)", token.value, null, token);

      case Token.NoSubstTemplate:
        this.trigger("NoSubstTemplate", {
          line: this.line,
          char: this.char,
          from: this.from,
          startLine: token.startLine,
          startChar: token.startChar,
          value: token.value
        });
        return create("(no subst template)", token.value, null, token);

      case Token.Identifier:
        this.triggerAsync("Identifier", {
          line: this.line,
          char: this.char,
          from: this.from,
          name: token.value,
          raw_name: token.text,
          isProperty: state.tokens.curr.id === "."
        }, checks, function() { return true; });

        /* falls through */
      case Token.Keyword:
        return create("(identifier)", token.value, state.tokens.curr.id === ".", token);

      case Token.NumericLiteral:
        if (token.isMalformed) {
          this.trigger("error", {
            code: "E067",
            line: this.line,
            character: this.char,
            data: [ token.value ]
          });
        }

        this.triggerAsync("warning", {
          code: "W114",
          line: this.line,
          character: this.char,
          data: [ "0x-" ]
        }, checks, function() { return token.base === 16 && state.jsonMode; });

        this.triggerAsync("warning", {
          code: "W115",
          line: this.line,
          character: this.char
        }, checks, function() {
          return state.isStrict() && token.base === 8 && token.isLegacy;
        });

        this.triggerAsync("error", {
          code: "E068",
          line: this.line,
          character: this.char
        }, checks, function() {
          return state.isStrict() && token.isNonOctal;
        });

        this.trigger("Number", {
          line: this.line,
          char: this.char,
          from: this.from,
          value: token.value,
          base: token.base,
          isMalformed: token.isMalformed
        });

        return create("(number)", token.value);

      case Token.RegExp:
        return create("(regexp)", token.value);

      case Token.Comment:
        if (token.isSpecial) {
          return {
            id: '(comment)',
            value: token.value,
            body: token.body,
            type: token.commentType,
            isSpecial: token.isSpecial,
            line: this.line,
            character: this.char,
            from: this.from
          };
        }

        break;

      default:
        return create("(punctuator)", token.value);
      }
    }
  }
};

exports.Lexer = Lexer;
exports.Context = Context;

},{"../data/ascii-identifier-data.js":1,"../data/es5-identifier-names.js":2,"../data/non-ascii-identifier-part-only.js":3,"../data/non-ascii-identifier-start.js":4,"./reg.js":22,"./state.js":24,"./validate-unicode-escape-sequence":26,"events":11,"lodash":12}],18:[function(require,module,exports){
"use strict";

var _ = require("lodash");

var errors = {
  // JSHint options
  E001: "Bad {a}option: '{b}'.",
  E002: "Bad option value.",

  // JSHint input
  E003: "Expected a JSON value.",
  E004: "Input is neither a string nor an array of strings.",
  E005: "Input is empty.",
  E006: "Unexpected early end of program.",

  // Strict mode
  E007: "Missing \"use strict\" statement.",
  E008: "Strict violation.",
  E009: "Option 'validthis' can't be used in a global scope.",
  E010: "'with' is not allowed in strict mode.",

  // Constants
  E011: "'{a}' has already been declared.",
  E012: "Missing initializer for constant '{a}'.",
  E013: "Attempting to override '{a}' which is a constant.",

  // Regular expressions
  E014: "A regular expression literal can be confused with '/='.",
  E015: "Unclosed regular expression.",
  E016: "Invalid regular expression.",

  // Tokens
  E017: "Unclosed comment.",
  E018: "Unbegun comment.",
  E019: "Unmatched '{a}'.",
  E020: "Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.",
  E021: "Expected '{a}' and instead saw '{b}'.",
  E022: "Line breaking error '{a}'.",
  E023: "Missing '{a}'.",
  E024: "Unexpected '{a}'.",
  E025: "Missing ':' on a case clause.",
  E026: "Missing '}' to match '{' from line {a}.",
  E027: "Missing ']' to match '[' from line {a}.",
  E028: "Illegal comma.",
  E029: "Unclosed string.",

  // Everything else
  E030: "Expected an identifier and instead saw '{a}'.",
  E031: "Bad assignment.", // FIXME: Rephrase
  E032: "Expected a small integer or 'false' and instead saw '{a}'.",
  E033: "Expected an operator and instead saw '{a}'.",
  E034: "get/set are ES5 features.",
  E035: "Missing property name.",
  E036: "Expected to see a statement and instead saw a block.",
  E037: null,
  E038: null,
  E039: "Function declarations are not invocable. Wrap the whole function invocation in parens.",
  E040: "Each value should have its own case label.",
  E041: "Unrecoverable syntax error.",
  E042: "Stopping.",
  E043: "Too many errors.",
  E044: null,
  E045: "Invalid for each loop.",
  E046: "Yield expressions may only occur within generator functions.",
  E047: null,
  E048: "{a} declaration not directly within block.",
  E049: "A {a} cannot be named '{b}'.",
  E050: "Mozilla requires the yield expression to be parenthesized here.",
  E051: null,
  E052: "Unclosed template literal.",
  E053: "{a} declarations are only allowed at the top level of module scope.",
  E054: "Class properties must be methods. Expected '(' but instead saw '{a}'.",
  E055: "The '{a}' option cannot be set after any executable code.",
  E056: "'{a}' was used before it was declared, which is illegal for '{b}' variables.",
  E057: "Invalid meta property: '{a}.{b}'.",
  E058: "Missing semicolon.",
  E059: "Incompatible values for the '{a}' and '{b}' linting options.",
  E060: "Non-callable values cannot be used as the second operand to instanceof.",
  E061: "Invalid position for 'yield' expression (consider wrapping in parenthesis).",
  E062: "Rest parameter does not a support default value.",
  E063: "Super property may only be used within method bodies.",
  E064: "Super call may only be used within class method bodies.",
  E065: "Functions defined outside of strict mode with non-simple parameter lists may not " +
    "enable strict mode.",
  E066: "Asynchronous iteration is only available with for-of loops.",
  E067: "Malformed numeric literal: '{a}'.",
  E068: "Decimals with leading zeros are not allowed in strict mode.",
  E069: "Duplicate exported binding: '{a}'.",
  E070: "import.meta may only be used in module code."
};

var warnings = {
  W001: "'hasOwnProperty' is a really bad name.",
  W002: "Value of '{a}' may be overwritten in IE 8 and earlier.",
  W003: "'{a}' was used before it was defined.",
  W004: "'{a}' is already defined.",
  W005: "A dot following a number can be confused with a decimal point.",
  W006: "Confusing minuses.",
  W007: "Confusing plusses.",
  W008: "A leading decimal point can be confused with a dot: '{a}'.",
  W009: "The array literal notation [] is preferable.",
  W010: "The object literal notation {} is preferable.",
  W011: null,
  W012: null,
  W013: null,
  W014: "Misleading line break before '{a}'; readers may interpret this as an expression boundary.",
  W015: null,
  W016: "Unexpected use of '{a}'.",
  W017: "Bad operand.",
  W018: "Confusing use of '{a}'.",
  W019: "Use the isNaN function to compare with NaN.",
  W020: "Read only.",
  W021: "Reassignment of '{a}', which is a {b}. " +
    "Use 'var' or 'let' to declare bindings that may change.",
  W022: "Do not assign to the exception parameter.",
  W023: null,
  W024: "Expected an identifier and instead saw '{a}' (a reserved word).",
  W025: "Missing name in function declaration.",
  W026: "Inner functions should be listed at the top of the outer function.",
  W027: "Unreachable '{a}' after '{b}'.",
  W028: "Label '{a}' on {b} statement.",
  W030: "Expected an assignment or function call and instead saw an expression.",
  W031: "Do not use 'new' for side effects.",
  W032: "Unnecessary semicolon.",
  W033: "Missing semicolon.",
  W034: "Unnecessary directive \"{a}\".",
  W035: "Empty block.",
  W036: "Unexpected /*member '{a}'.",
  W037: "'{a}' is a statement label.",
  W038: "'{a}' used out of scope.",
  W039: null,
  W040: "If a strict mode function is executed using function invocation, " +
    "its 'this' value will be undefined.",
  W041: null,
  W042: "Avoid EOL escaping.",
  W043: "Bad escaping of EOL. Use option multistr if needed.",
  W044: "Bad or unnecessary escaping.", /* TODO(caitp): remove W044 */
  W045: "Value described by numeric literal cannot be accurately " +
    "represented with a number value: '{a}'.",
  W046: "Don't use extra leading zeros '{a}'.",
  W047: "A trailing decimal point can be confused with a dot: '{a}'.",
  W048: "Unexpected control character in regular expression.",
  W049: "Unexpected escaped character '{a}' in regular expression.",
  W050: "JavaScript URL.",
  W051: "Variables should not be deleted.",
  W052: "Unexpected '{a}'.",
  W053: "Do not use {a} as a constructor.",
  W054: "The Function constructor is a form of eval.",
  W055: "A constructor name should start with an uppercase letter.",
  W056: "Bad constructor.",
  W057: "Weird construction. Is 'new' necessary?",
  W058: "Missing '()' invoking a constructor.",
  W059: "Avoid arguments.{a}.",
  W060: "document.write can be a form of eval.",
  W061: "eval can be harmful.",
  W062: "Wrap an immediate function invocation in parens " +
    "to assist the reader in understanding that the expression " +
    "is the result of a function, and not the function itself.",
  W063: "Math is not a function.",
  W064: "Missing 'new' prefix when invoking a constructor.",
  W065: "Missing radix parameter.",
  W066: "Implied eval. Consider passing a function instead of a string.",
  W067: "Unorthodox function invocation.",
  W068: "Wrapping non-IIFE function literals in parens is unnecessary.",
  W069: "['{a}'] is better written in dot notation.",
  W070: "Extra comma. (it breaks older versions of IE)",
  W071: "This function has too many statements. ({a})",
  W072: "This function has too many parameters. ({a})",
  W073: "Blocks are nested too deeply. ({a})",
  W074: "This function's cyclomatic complexity is too high. ({a})",
  W075: "Duplicate {a} '{b}'.",
  W076: "Unexpected parameter '{a}' in get {b} function.",
  W077: "Expected a single parameter in set {a} function.",
  W078: "Setter is defined without getter.",
  W079: "Redefinition of '{a}'.",
  W080: "It's not necessary to initialize '{a}' to 'undefined'.",
  W081: null,
  W082: "Function declarations should not be placed in blocks. " +
    "Use a function expression or move the statement to the top of " +
    "the outer function.",
  W083: "Functions declared within loops referencing an outer scoped " +
    "variable may lead to confusing semantics. ({a})",
  W084: "Expected a conditional expression and instead saw an assignment.",
  W085: "Don't use 'with'.",
  W086: "Expected a 'break' statement before '{a}'.",
  W087: "Forgotten 'debugger' statement?",
  W088: "Creating global 'for' variable. Should be 'for (var {a} ...'.",
  W089: "The body of a for in should be wrapped in an if statement to filter " +
    "unwanted properties from the prototype.",
  W090: "'{a}' is not a statement label.",
  W091: null,
  W093: "Did you mean to return a conditional instead of an assignment?",
  W094: "Unexpected comma.",
  W095: "Expected a string and instead saw {a}.",
  W096: "The '{a}' key may produce unexpected results.",
  W097: "Use the function form of \"use strict\".",
  W098: "'{a}' is defined but never used.",
  W099: null,
  W100: null,
  W101: "Line is too long.",
  W102: null,
  W103: "The '{a}' property is deprecated.",
  W104: "'{a}' is available in ES{b} (use 'esversion: {b}') or Mozilla JS extensions (use moz).",
  W105: null,
  W106: "Identifier '{a}' is not in camel case.",
  W107: "Script URL.",
  W108: "Strings must use doublequote.",
  W109: "Strings must use singlequote.",
  W110: "Mixed double and single quotes.",
  W112: "Unclosed string.",
  W113: "Control character in string: {a}.",
  W114: "Avoid {a}.",
  W115: "Octal literals are not allowed in strict mode.",
  W116: "Expected '{a}' and instead saw '{b}'.",
  W117: "'{a}' is not defined.",
  W118: "'{a}' is only available in Mozilla JavaScript extensions (use moz option).",
  W119: "'{a}' is only available in ES{b} (use 'esversion: {b}').",
  W120: "You might be leaking a variable ({a}) here.",
  W121: "Extending prototype of native object: '{a}'.",
  W122: "Invalid typeof value '{a}'",
  W123: "'{a}' is already defined in outer scope.",
  W124: "A generator function should contain at least one yield expression.",
  W125: "This line contains non-breaking spaces: http://jshint.com/docs/options/#nonbsp",
  W126: "Unnecessary grouping operator.",
  W127: "Unexpected use of a comma operator.",
  W128: "Empty array elements require elision=true.",
  W129: "'{a}' is defined in a future version of JavaScript. Use a " +
    "different variable name to avoid migration issues.",
  W130: "Invalid element after rest element.",
  W131: "Invalid parameter after rest parameter.",
  W132: "`var` declarations are forbidden. Use `let` or `const` instead.",
  W133: "Invalid for-{a} loop left-hand-side: {b}.",
  W134: "The '{a}' option is only available when linting ECMAScript {b} code.",
  W135: "{a} may not be supported by non-browser environments.",
  W136: "'{a}' must be in function scope.",
  W137: "Empty destructuring: this is unnecessary and can be removed.",
  W138: "Regular parameters should not come after default parameters.",
  W139: "Function expressions should not be used as the second operand to instanceof.",
  W140: "Missing comma.",
  W141: "Empty {a}: this is unnecessary and can be removed.",
  W142: "Empty {a}: consider replacing with `import '{b}';`.",
  W143: "Assignment to properties of a mapped arguments object may cause " +
    "unexpected changes to formal parameters.",
  W144: "'{a}' is a non-standard language feature. Enable it using the '{b}' unstable option.",
  W145: "Superfluous 'case' clause.",
  W146: "Unnecessary `await` expression.",
  W147: "Regular expressions should include the 'u' flag.",
  W148: "Unnecessary RegExp 's' flag."
};

var info = {
  I001: "Comma warnings can be turned off with 'laxcomma'.",
  I002: null,
  I003: "ES5 option is now set per default"
};

exports.errors = {};
exports.warnings = {};
exports.info = {};

_.each(errors, function(desc, code) {
  exports.errors[code] = { code: code, desc: desc };
});

_.each(warnings, function(desc, code) {
  exports.warnings[code] = { code: code, desc: desc };
});

_.each(info, function(desc, code) {
  exports.info[code] = { code: code, desc: desc };
});

},{"lodash":12}],19:[function(require,module,exports){
/**
 * The NameStack class is used to approximate function name inference as
 * introduced by ECMAScript 2015. In that edition, the `name` property of
 * function objects is set according to the function's syntactic form. For
 * certain forms, this value depends on values available to the runtime during
 * execution. For example:
 *
 *     var fnName = function() {};
 *
 * In the program code above, the function object's `name` property is set to
 * `"fnName"` during execution.
 *
 * This general "name inference" behavior extends to a number of additional
 * syntactic forms, not all of which can be implemented statically. `NameStack`
 * is a support class representing a "best-effort" attempt to implement the
 * specified behavior in cases where this may be done statically.
 *
 * For more information on this behavior, see the following blog post:
 * https://bocoup.com/blog/whats-in-a-function-name
 */
"use strict";

function NameStack() {
  this._stack = [];
}

Object.defineProperty(NameStack.prototype, "length", {
  get: function() {
    return this._stack.length;
  }
});

/**
 * Create a new entry in the stack. Useful for tracking names across
 * expressions.
 */
NameStack.prototype.push = function() {
  this._stack.push(null);
};

/**
 * Discard the most recently-created name on the stack.
 */
NameStack.prototype.pop = function() {
  this._stack.pop();
};

/**
 * Update the most recent name on the top of the stack.
 *
 * @param {object} token The token to consider as the source for the most
 *                       recent name.
 */
NameStack.prototype.set = function(token) {
  this._stack[this.length - 1] = token;
};

/**
 * Generate a string representation of the most recent name.
 *
 * @returns {string}
 */
NameStack.prototype.infer = function() {
  var nameToken = this._stack[this.length - 1];
  var prefix = "";
  var type;

  // During expected operation, the topmost entry on the stack will only
  // reflect the current function's name when the function is declared without
  // the `function` keyword (i.e. for in-line accessor methods). In other
  // cases, the `function` expression itself will introduce an empty entry on
  // the top of the stack, and this should be ignored.
  if (!nameToken || nameToken.type === "class") {
    nameToken = this._stack[this.length - 2];
  }

  if (!nameToken) {
    return "(empty)";
  }

  type = nameToken.type;

  if (type !== "(string)" && type !== "(number)" && type !== "(identifier)" && type !== "default") {
    return "(expression)";
  }

  if (nameToken.accessorType) {
    prefix = nameToken.accessorType + " ";
  }

  return prefix + nameToken.value;
};

module.exports = NameStack;

},{}],20:[function(require,module,exports){
"use strict";

// These are the JSHint boolean options.
exports.bool = {
  enforcing: {

    /**
     * This option prohibits the use of bitwise operators such as `^` (XOR),
     * `|` (OR) and others. Bitwise operators are very rare in JavaScript
     * programs and quite often `&` is simply a mistyped `&&`.
     */
    bitwise     : true,

    /**
     *
     * This options prohibits overwriting prototypes of native objects such as
     * `Array`, `Date` and so on.
     *
     *     // jshint freeze:true
     *     Array.prototype.count = function (value) { return 4; };
     *     // -> Warning: Extending prototype of native object: 'Array'.
     */
    freeze      : true,

    /**
     * This option allows you to force all variable names to use either
     * camelCase style or UPPER_CASE with underscores.
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    camelcase   : true,

    /**
     * This option requires you to always put curly braces around blocks in
     * loops and conditionals. JavaScript allows you to omit curly braces when
     * the block consists of only one statement, for example:
     *
     *     while (day)
     *       shuffle();
     *
     * However, in some circumstances, it can lead to bugs (you'd think that
     * `sleep()` is a part of the loop while in reality it is not):
     *
     *     while (day)
     *       shuffle();
     *       sleep();
     */
    curly       : true,

    /**
     * This options prohibits the use of `==` and `!=` in favor of `===` and
     * `!==`. The former try to coerce values before comparing them which can
     * lead to some unexpected results. The latter don't do any coercion so
     * they are generally safer. If you would like to learn more about type
     * coercion in JavaScript, we recommend [Truth, Equality and
     * JavaScript](http://javascriptweblog.wordpress.com/2011/02/07/truth-equality-and-javascript/)
     * by Angus Croll.
     */
    eqeqeq      : true,

    /**
     * This option enables warnings about the use of identifiers which are
     * defined in future versions of JavaScript. Although overwriting them has
     * no effect in contexts where they are not implemented, this practice can
     * cause issues when migrating codebases to newer versions of the language.
     */
    futurehostile: true,

    /**
     * This option tells JSHint that your code needs to adhere to ECMAScript 3
     * specification. Use this option if you need your program to be executable
     * in older browsers—such as Internet Explorer 6/7/8/9—and other legacy
     * JavaScript environments.
     *
     * @deprecated Use `esversion: 3` instead.
     */
    es3         : true,

    /**
     * This option enables syntax first defined in [the ECMAScript 5.1
     * specification](http://es5.github.io/). This includes allowing reserved
     * keywords as object properties.
     *
     * @deprecated Use `esversion: 5` instead.
     */
    es5         : true,

    /**
     * This option requires all `for in` loops to filter object's items. The
     * for in statement allows for looping through the names of all of the
     * properties of an object including those inherited through the prototype
     * chain. This behavior can lead to unexpected items in your object so it
     * is generally safer to always filter inherited properties out as shown in
     * the example:
     *
     *     for (key in obj) {
     *       if (obj.hasOwnProperty(key)) {
     *         // We are sure that obj[key] belongs to the object and was not inherited.
     *       }
     *     }
     *
     * For more in-depth understanding of `for in` loops in JavaScript, read
     * [Exploring JavaScript for-in
     * loops](http://javascriptweblog.wordpress.com/2011/01/04/exploring-javascript-for-in-loops/)
     * by Angus Croll.
     */
    forin       : true,

    /**
     * This option prohibits the use of immediate function invocations without
     * wrapping them in parentheses. Wrapping parentheses assists readers of
     * your code in understanding that the expression is the result of a
     * function, and not the function itself.
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    immed       : true,

    /**
     * This option prohibits unnecessary clauses within `switch` statements,
     * e.g.
     *
     *     switch (x) {
     *       case 1:
     *       default:
     *         z();
     *     }
     *
     * While clauses like these are techincally valid, they do not effect
     * program behavior and may indicate an erroneous refactoring.
     */
    leanswitch  : true,

    /**
     * This option requires you to capitalize names of constructor functions.
     * Capitalizing functions that are intended to be used with `new` operator
     * is just a convention that helps programmers to visually distinguish
     * constructor functions from other types of functions to help spot
     * mistakes when using `this`.
     *
     * Not doing so won't break your code in any browsers or environments but
     * it will be a bit harder to figure out—by reading the code—if the
     * function was supposed to be used with or without new. And this is
     * important because when the function that was intended to be used with
     * `new` is used without it, `this` will point to the global object instead
     * of a new object.
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    newcap      : true,

    /**
     * This option prohibits the use of `arguments.caller` and
     * `arguments.callee`.  Both `.caller` and `.callee` make quite a few
     * optimizations impossible so they were deprecated in future versions of
     * JavaScript. In fact, ECMAScript 5 forbids the use of `arguments.callee`
     * in strict mode.
     */
    noarg       : true,

    /**
     * This option prohibits the use of the comma operator. When misused, the
     * comma operator can obscure the value of a statement and promote
     * incorrect code.
     */
    nocomma     : true,

    /**
     * This option warns when you have an empty block in your code. JSLint was
     * originally warning for all empty blocks and we simply made it optional.
     * There were no studies reporting that empty blocks in JavaScript break
     * your code in any way.
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    noempty     : true,

    /**
     * This option warns about "non-breaking whitespace" characters. These
     * characters can be entered with option-space on Mac computers and have a
     * potential of breaking non-UTF8 web pages.
     */
    nonbsp      : true,

    /**
     * This option prohibits the use of constructor functions for side-effects.
     * Some people like to call constructor functions without assigning its
     * result to any variable:
     *
     *     new MyConstructor();
     *
     * There is no advantage in this approach over simply calling
     * `MyConstructor` since the object that the operator `new` creates isn't
     * used anywhere so you should generally avoid constructors like this one.
     */
    nonew       : true,


    /**
     * Async functions resolve on their return value. In most cases, this makes
     * returning the result of an AwaitExpression (which is itself a Promise
     * instance) unnecessary. For clarity, it's often preferable to return the
     * result of the asynchronous operation directly. The notable exception is
     * within the `try` clause of a TryStatement--for more, see "await vs
     * return vs return await":
     *
     * https://jakearchibald.com/2017/await-vs-return-vs-return-await/
     */
    noreturnawait: true,

    /**
     * This option enables warnings for regular expressions which do not
     * include the "u" flag. The "u" flag extends support for Unicode and also
     * enables more strict parsing rules. JSHint will enforce these rules even
     * if it is executed in a JavaScript engine which does not support the "u"
     * flag.
     */
    regexpu     : true,

    /**
     * This option prohibits the use of explicitly undeclared variables. This
     * option is very useful for spotting leaking and mistyped variables.
     *
     *     // jshint undef:true
     *
     *     function test() {
     *       var myVar = 'Hello, World';
     *       console.log(myvar); // Oops, typoed here. JSHint with undef will complain
     *     }
     *
     * If your variable is defined in another file, you can use the `global`
     * directive to tell JSHint about it.
     */
    undef       : true,

    /**
     * This option prohibits the use of the grouping operator when it is not
     * strictly required. Such usage commonly reflects a misunderstanding of
     * unary operators, for example:
     *
     *     // jshint singleGroups: true
     *
     *     delete(obj.attr); // Warning: Unnecessary grouping operator.
     */
    singleGroups: false,

    /**
     * When set to true, the use of VariableStatements are forbidden.
     * For example:
     *
     *     // jshint varstmt: true
     *
     *     var a; // Warning: `var` declarations are forbidden. Use `let` or `const` instead.
     */
    varstmt: false,

    /**
     * This option is a short hand for the most strict JSHint configuration as
     * available in JSHint version 2.6.3. It enables all enforcing options and
     * disables all relaxing options that were defined in that release.
     *
     * @deprecated The option cannot be maintained without automatically opting
     *             users in to new features. This can lead to unexpected
     *             warnings/errors in when upgrading between minor versions of
     *             JSHint.
     */
    enforceall : false,

    /**
     * This option warns when a comma is not placed after the last element in an
     * array or object literal. Due to bugs in old versions of IE, trailing
     * commas used to be discouraged, but since ES5 their semantics were
     * standardized. (See
     * [#11.1.4](http://www.ecma-international.org/ecma-262/5.1/#sec-11.1.4) and
     * [#11.1.5](http://www.ecma-international.org/ecma-262/5.1/#sec-11.1.5).)
     * Now, they help to prevent the same [visual
     * ambiguities](http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.2)
     * that the strict usage of semicolons helps prevent.
     *
     * For example, this code might have worked last Tuesday:
     *
     *     [
     *         b + c
     *     ].forEach(print);
     *
     * But if one adds an element to the array and forgets to compensate for the
     * missing comma, no syntax error is thrown, and a linter cannot determine
     * if this was a mistake or an intentional function invocation.
     *
     *     [
     *         b + c
     *         (d + e)
     *     ].forEach(print);
     *
     * If one always appends a list item with a comma, this ambiguity cannot
     * occur:
     *
     *     [
     *         b + c,
     *     ].forEach(print);
     *
     *     [
     *         b + c,
     *         (d + e),
     *     ].forEach(print);
     */
    trailingcomma: false
  },
  relaxing: {

    /**
     * This option suppresses warnings about missing semicolons. There is a lot
     * of FUD about semicolon spread by quite a few people in the community.
     * The common myths are that semicolons are required all the time (they are
     * not) and that they are unreliable. JavaScript has rules about semicolons
     * which are followed by *all* browsers so it is up to you to decide
     * whether you should or should not use semicolons in your code.
     *
     * For more information about semicolons in JavaScript read [An Open Letter
     * to JavaScript Leaders Regarding
     * Semicolons](http://blog.izs.me/post/2353458699/an-open-letter-to-javascript-leaders-regarding)
     * by Isaac Schlueter and [JavaScript Semicolon
     * Insertion](http://inimino.org/~inimino/blog/javascript_semicolons).
     */
    asi         : true,

    /**
     * This option suppresses warnings about multi-line strings. Multi-line
     * strings can be dangerous in JavaScript because all hell breaks loose if
     * you accidentally put a whitespace in between the escape character (`\`)
     * and a new line.
     *
     * Note that even though this option allows correct multi-line strings, it
     * still warns about multi-line strings without escape characters or with
     * anything in between the escape character and a whitespace.
     *
     *     // jshint multistr:true
     *
     *     var text = "Hello\
     *     World"; // All good.
     *
     *     text = "Hello
     *     World"; // Warning, no escape character.
     *
     *     text = "Hello\
     *     World"; // Warning, there is a space after \
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    multistr    : true,

    /**
     * This option suppresses warnings about the `debugger` statements in your
     * code.
     */
    debug       : true,

    /**
     * This option suppresses warnings about the use of assignments in cases
     * where comparisons are expected. More often than not, code like `if (a =
     * 10) {}` is a typo. However, it can be useful in cases like this one:
     *
     *     for (var i = 0, person; person = people[i]; i++) {}
     *
     * You can silence this error on a per-use basis by surrounding the assignment
     * with parenthesis, such as:
     *
     *     for (var i = 0, person; (person = people[i]); i++) {}
     */
    boss        : true,

    /**
     * This option suppresses warnings about the use of `eval`. The use of
     * `eval` is discouraged because it can make your code vulnerable to
     * various injection attacks and it makes it hard for JavaScript
     * interpreter to do certain optimizations.
    */
    evil        : true,

    /**
     * This option suppresses warnings about declaring variables inside
     * of control structures while accessing them later from the outside.
     * Even though identifiers declared with `var` have two real scopes—global
     * and function—such practice leads to confusion among people new to
     * the language and hard-to-debug bugs. This is why, by default, JSHint
     * warns about variables that are used outside of their intended scope.
     *
     *     function test() {
     *       if (true) {
     *         var x = 0;
     *       }
     *
     *       x += 1; // Default: 'x' used out of scope.
     *                 // No warning when funcscope:true
     *     }
     */
    funcscope   : true,

    /**
     * This option suppresses warnings about the use of global strict mode.
     * Global strict mode can break third-party widgets so it is not
     * recommended.
     *
     * For more info about strict mode see the `strict` option.
     *
     * @deprecated Use `strict: "global"`.
     */
    globalstrict: true,

    /**
     * This option suppresses warnings about the `__iterator__` property. This
     * property is not supported by all browsers so use it carefully.
     */
    iterator    : true,

     /**
     * This option suppresses warnings about invalid `typeof` operator values.
     * This operator has only [a limited set of possible return
     * values](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof).
     * By default, JSHint warns when you compare its result with an invalid
     * value which often can be a typo.
     *
     *     // 'fuction' instead of 'function'
     *     if (typeof a == "fuction") { // Invalid typeof value 'fuction'
     *       // ...
     *     }
     *
     * Do not use this option unless you're absolutely sure you don't want
     * these checks.
     */
    notypeof    : true,

    /**
     * This option prohibits the use of unary increment and decrement
     * operators.  Some people think that `++` and `--` reduces the quality of
     * their coding styles and there are programming languages—such as
     * Python—that go completely without these operators.
     */
    plusplus    : true,

    /**
     * This option suppresses warnings about the `__proto__` property.
     */
    proto       : true,

    /**
     * This option suppresses warnings about the use of script-targeted
     * URLs—such as `javascript:...`.
     */
    scripturl   : true,

    /**
     * This option suppresses warnings about using `[]` notation when it can be
     * expressed in dot notation: `person['name']` vs. `person.name`.
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    sub         : true,

    /**
     * This option suppresses warnings about "weird" constructions like
     * `new function () { ... }` and `new Object;`. Such constructions are
     * sometimes used to produce singletons in JavaScript:
     *
     *     var singleton = new function() {
     *       var privateVar;
     *
     *       this.publicMethod  = function () {}
     *       this.publicMethod2 = function () {}
     *     };
     */
    supernew    : true,

    /**
     * This option suppresses most of the warnings about possibly unsafe line
     * breakings in your code. It doesn't suppress warnings about comma-first
     * coding style. To suppress those you have to use `laxcomma` (see below).
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    laxbreak    : true,

    /**
     * This option suppresses warnings about comma-first coding style:
     *
     *     var obj = {
     *         name: 'Anton'
     *       , handle: 'valueof'
     *       , role: 'SW Engineer'
     *     };
     *
     * @deprecated JSHint is limiting its scope to issues of code correctness.
     *             If you would like to enforce rules relating to code style,
     *             check out [the JSCS
     *             project](https://github.com/jscs-dev/node-jscs).
     */
    laxcomma    : true,

    /**
     * This option suppresses warnings about possible strict violations when
     * the code is running in strict mode and you use `this` in a
     * non-constructor function. You should use this option—in a function scope
     * only—when you are positive that your use of `this` is valid in the
     * strict mode (for example, if you call your function using
     * `Function.call`).
     *
     * **Note:** This option can be used only inside of a function scope.
     * JSHint will fail with an error if you will try to set this option
     * globally.
     */
    validthis   : true,

    /**
     * This option suppresses warnings about the use of the `with` statement.
     * The semantics of the `with` statement can cause confusion among
     * developers and accidental definition of global variables.
     *
     * More info:
     *
     * * [with Statement Considered
     *   Harmful](http://yuiblog.com/blog/2006/04/11/with-statement-considered-harmful/)
     */
    withstmt    : true,

    /**
     * This options tells JSHint that your code uses Mozilla JavaScript
     * extensions. Unless you develop specifically for the Firefox web browser
     * you don't need this option.
     *
     * More info:
     *
     * * [New in JavaScript
     *   1.7](https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.7)
     */
    moz         : true,

    /**
     * This option suppresses warnings about generator functions with no
     * `yield` statement in them.
     */
    noyield     : true,

    /**
     * This option suppresses warnings about `== null` comparisons. Such
     * comparisons are often useful when you want to check if a variable is
     * `null` or `undefined`.
     */
    eqnull      : true,

    /**
     * This option suppresses warnings about missing semicolons, but only when
     * the semicolon is omitted for the last statement in a one-line block:
     *
     *     var name = (function() { return 'Anton' }());
     *
     * This is a very niche use case that is useful only when you use automatic
     * JavaScript code generators.
     */
    lastsemic   : true,

    /**
     * This option suppresses warnings about functions inside of loops.
     * Defining functions inside of loops can lead to bugs such as this one:
     *
     *     var nums = [];
     *
     *     for (var i = 0; i < 10; i++) {
     *       nums[i] = function (j) {
     *         return i + j;
     *       };
     *     }
     *
     *     nums[0](2); // Prints 12 instead of 2
     *
     * To fix the code above you need to copy the value of `i`:
     *
     *     var nums = [];
     *
     *     for (var i = 0; i < 10; i++) {
     *       (function (i) {
     *         nums[i] = function (j) {
     *             return i + j;
     *         };
     *       }(i));
     *     }
     */
    loopfunc    : true,

    /**
     * This option suppresses warnings about the use of expressions where
     * normally you would expect to see assignments or function calls. Most of
     * the time, such code is a typo. However, it is not forbidden by the spec
     * and that's why this warning is optional.
     */
    expr        : true,

    /**
     * This option tells JSHint that your code uses ECMAScript 6 specific
     * syntax. Note that not all browsers implement these features.
     *
     * More info:
     *
     * * [Specification for ECMAScript
     *   6](http://www.ecma-international.org/ecma-262/6.0/index.html)
     *
     * @deprecated Use `esversion: 6` instead.
     */
    esnext      : true,

    /**
     * This option tells JSHint that your code uses ES3 array elision elements,
     * or empty elements (for example, `[1, , , 4, , , 7]`).
     */
    elision     : true,
  },

  // Third party globals
  environments: {

    /**
     * This option defines globals exposed by the
     * [MooTools](http://mootools.net/) JavaScript framework.
     */
    mootools    : true,

    /**
     * This option defines globals exposed by
     * [CouchDB](http://couchdb.apache.org/). CouchDB is a document-oriented
     * database that can be queried and indexed in a MapReduce fashion using
     * JavaScript.
     */
    couch       : true,

    /**
     * This option defines globals exposed by [the Jasmine unit testing
     * framework](https://jasmine.github.io/).
     */
    jasmine     : true,

    /**
     * This option defines globals exposed by the [jQuery](http://jquery.com/)
     * JavaScript library.
     */
    jquery      : true,

    /**
     * This option defines globals available when your code is running inside
     * of the Node runtime environment. [Node.js](http://nodejs.org/) is a
     * server-side JavaScript environment that uses an asynchronous
     * event-driven model. This option also skips some warnings that make sense
     * in the browser environments but don't make sense in Node such as
     * file-level `use strict` pragmas and `console.log` statements.
     */
    node        : true,

    /**
     * This option defines globals exposed by [the QUnit unit testing
     * framework](http://qunitjs.com/).
     */
    qunit       : true,

    /**
     * This option defines globals available when your code is running inside
     * of the Rhino runtime environment. [Rhino](http://www.mozilla.org/rhino/)
     * is an open-source implementation of JavaScript written entirely in Java.
     */
    rhino       : true,

    /**
     * This option defines globals exposed by [the ShellJS
     * library](http://documentup.com/arturadib/shelljs).
     */
    shelljs     : true,

    /**
     * This option defines globals exposed by the
     * [Prototype](http://www.prototypejs.org/) JavaScript framework.
     */
    prototypejs : true,

    /**
     * This option defines globals exposed by the [YUI](http://yuilibrary.com/)
     * JavaScript framework.
     */
    yui         : true,

    /**
     * This option defines globals exposed by the "BDD" and "TDD" UIs of the
     * [Mocha unit testing framework](http://mochajs.org/).
     */
    mocha       : true,

    /**
     * This option informs JSHint that the input code describes an ECMAScript 6
     * module. All module code is interpreted as strict mode code.
     */
    module      : true,

    /**
     * This option defines globals available when your code is running as a
     * script for the [Windows Script
     * Host](http://en.wikipedia.org/wiki/Windows_Script_Host).
     */
    wsh         : true,

    /**
     * This option defines globals available when your code is running inside
     * of a Web Worker. [Web
     * Workers](https://developer.mozilla.org/en/Using_web_workers) provide a
     * simple means for web content to run scripts in background threads.
     */
    worker      : true,

    /**
     * This option defines non-standard but widely adopted globals such as
     * `escape` and `unescape`.
     */
    nonstandard : true,

    /**
     * This option defines globals exposed by modern browsers: all the way from
     * good old `document` and `navigator` to the HTML5 `FileReader` and other
     * new developments in the browser world.
     *
     * **Note:** This option doesn't expose variables like `alert` or
     * `console`. See option `devel` for more information.
     */
    browser     : true,

    /**
     * This option defines globals available when using [the Browserify
     * tool](http://browserify.org/) to build a project.
     */
    browserify  : true,

    /**
     * This option defines globals that are usually used for logging poor-man's
     * debugging: `console`, `alert`, etc. It is usually a good idea to not
     * ship them in production because, for example, `console.log` breaks in
     * legacy versions of Internet Explorer.
     */
    devel       : true,

    /**
     * This option defines globals exposed by the [Dojo
     * Toolkit](http://dojotoolkit.org/).
     */
    dojo        : true,

    /**
     * This option defines globals for typed array constructors.
     *
     * More info:
     *
     * * [JavaScript typed
     *   arrays](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays)
     */
    typed       : true,

    /**
     * This option defines globals available when your core is running inside
     * of the PhantomJS runtime environment. [PhantomJS](http://phantomjs.org/)
     * is a headless WebKit scriptable with a JavaScript API. It has fast and
     * native support for various web standards: DOM handling, CSS selector,
     * JSON, Canvas, and SVG.
     */
    phantom     : true
  },

  // Obsolete options
  obsolete: {
    onecase     : true, // if one case switch statements should be allowed
    regexp      : true, // if the . should not be allowed in regexp literals
    regexdash   : true  // if unescaped first/last dash (-) inside brackets
                        // should be tolerated
  }
};

// These are the JSHint options that can take any value
// (we use this object to detect invalid options)
exports.val = {

  /**
   * This option lets you set the maximum length of a line.
   *
   * @deprecated JSHint is limiting its scope to issues of code correctness. If
   *             you would like to enforce rules relating to code style, check
   *             out [the JSCS project](https://github.com/jscs-dev/node-jscs).
   */
  maxlen       : false,

  /**
   * This option sets a specific tab width for your code.
   *
   * @deprecated JSHint is limiting its scope to issues of code correctness. If
   *             you would like to enforce rules relating to code style, check
   *             out [the JSCS project](https://github.com/jscs-dev/node-jscs).
   */
  indent       : false,

  /**
   * This options allows you to set the maximum amount of errors JSHint will
   * produce before giving up. Default is 50.
   */
  maxerr       : false,

  /**
   * This option allows you to control which variables JSHint considers to be
   * implicitly defined in the environment. Configure it with an array of
   * string values. Prefixing a variable name with a hyphen (-) character will
   * remove that name from the collection of predefined variables.
   *
   * JSHint will consider variables declared in this way to be read-only.
   *
   * This option cannot be specified in-line; it may only be used via the
   * JavaScript API or from an external configuration file.
   */
  predef       : false,

  /**
   * This option can be used to specify a white list of global variables that
   * are not formally defined in the source code. This is most useful when
   * combined with the `undef` option in order to suppress warnings for
   * project-specific global variables.
   *
   * Setting an entry to `true` enables reading and writing to that variable.
   * Setting it to `false` will trigger JSHint to consider that variable
   * read-only.
   *
   * See also the "environment" options: a set of options to be used as short
   * hand for enabling global variables defined in common JavaScript
   * environments.
   *
   * To configure `globals` within an individual file, see [Inline
   * Configuration](http://jshint.com/docs/#inline-configuration).
   */
  globals      : false,

  /**
   * This option enforces the consistency of quotation marks used throughout
   * your code. It accepts three values: `true` if you don't want to enforce
   * one particular style but want some consistency, `"single"` if you want to
   * allow only single quotes and `"double"` if you want to allow only double
   * quotes.
   *
   * @deprecated JSHint is limiting its scope to issues of code correctness. If
   *             you would like to enforce rules relating to code style, check
   *             out [the JSCS project](https://github.com/jscs-dev/node-jscs).
   */
  quotmark     : false,

  scope        : false,

  /**
   * This option lets you set the max number of statements allowed per function:
   *
   *     // jshint maxstatements:4
   *
   *     function main() {
   *       var i = 0;
   *       var j = 0;
   *
   *       // Function declarations count as one statement. Their bodies
   *       // don't get taken into account for the outer function.
   *       function inner() {
   *         var i2 = 1;
   *         var j2 = 1;
   *
   *         return i2 + j2;
   *       }
   *
   *       j = i + j;
   *       return j; // JSHint: Too many statements per function. (5)
   *     }
   */
  maxstatements: false,

  /**
   * This option lets you control how nested do you want your blocks to be:
   *
   *     // jshint maxdepth:2
   *
   *     function main(meaning) {
   *       var day = true;
   *
   *       if (meaning === 42) {
   *         while (day) {
   *           shuffle();
   *
   *           if (tired) { // JSHint: Blocks are nested too deeply (3).
   *               sleep();
   *           }
   *         }
   *       }
   *     }
   */
  maxdepth     : false,

  /**
   * This option lets you set the max number of formal parameters allowed per
   * function:
   *
   *     // jshint maxparams:3
   *
   *     function login(request, onSuccess) {
   *       // ...
   *     }
   *
   *     // JSHint: Too many parameters per function (4).
   *     function logout(request, isManual, whereAmI, onSuccess) {
   *       // ...
   *     }
   */
  maxparams    : false,

  /**
   * This option lets you control cyclomatic complexity throughout your code.
   * Cyclomatic complexity measures the number of linearly independent paths
   * through a program's source code. Read more about [cyclomatic complexity on
   * Wikipedia](http://en.wikipedia.org/wiki/Cyclomatic_complexity).
   */
  maxcomplexity: false,

  /**
   * This option suppresses warnings about variable shadowing i.e. declaring a
   * variable that had been already declared somewhere in the outer scope.
   *
   * - "inner"  - check for variables defined in the same scope only
   * - "outer"  - check for variables defined in outer scopes as well
   * - false    - same as inner
   * - true     - allow variable shadowing
   */
  shadow       : false,

  /**
   * This option requires the code to run in ECMAScript 5's strict mode.
   * [Strict mode](https://developer.mozilla.org/en/JavaScript/Strict_mode)
   * is a way to opt in to a restricted variant of JavaScript. Strict mode
   * eliminates some JavaScript pitfalls that didn't cause errors by changing
   * them to produce errors.  It also fixes mistakes that made it difficult
   * for the JavaScript engines to perform certain optimizations.
   *
   * - "global"  - there must be a `"use strict";` directive at global level
   * - "implied" - lint the code as if there is the `"use strict";` directive
   * - false     - disable warnings about strict mode
   * - true      - there must be a `"use strict";` directive at function level;
   *               this is preferable for scripts intended to be loaded in web
   *               browsers directly because enabling strict mode globally
   *               could adversely effect other scripts running on the same
   *               page
   */
  strict      : true,

  /**
   * This option warns when you define and never use your variables. It is very
   * useful for general code cleanup, especially when used in addition to
   * `undef`.
   *
   *     // jshint unused:true
   *
   *     function test(a, b) {
   *       var c, d = 2;
   *
   *       return a + d;
   *     }
   *
   *     test(1, 2);
   *
   *     // Line 3: 'b' was defined but never used.
   *     // Line 4: 'c' was defined but never used.
   *
   * In addition to that, this option will warn you about unused global
   * variables declared via the `global` directive.
   *
   * When set to `true`, unused parameters that are followed by a used
   * parameter will not produce warnings. This option can be set to `vars` to
   * only check for variables, not function parameters, or `strict` to check
   * all variables and parameters.
   */
  unused       : true,

  /**
   * This option prohibits the use of a variable before it was defined.
   * JavaScript has function scope only and, in addition to that, all variables
   * are always moved—or hoisted— to the top of the function. This behavior can
   * lead to some very nasty bugs and that's why it is safer to always use
   * variable only after they have been explicitly defined.
   *
   * Setting this option to "nofunc" will allow function declarations to be
   * ignored.
   *
   * For more in-depth understanding of scoping and hoisting in JavaScript,
   * read [JavaScript Scoping and
   * Hoisting](http://www.adequatelygood.com/2010/2/JavaScript-Scoping-and-Hoisting)
   * by Ben Cherry.
   */
  latedef      : false,

  ignore       : false, // start/end ignoring lines of code, bypassing the lexer
                        //   start    - start ignoring lines, including the current line
                        //   end      - stop ignoring lines, starting on the next line
                        //   line     - ignore warnings / errors for just a single line
                        //              (this option does not bypass the lexer)

  ignoreDelimiters: false, // array of start/end delimiters used to ignore
                           // certain chunks from code

  /**
   * This option is used to specify the ECMAScript version to which the code
   * must adhere. It can assume one of the following values:
   *  - `3` - If you need your program to be executable
   *    in older browsers—such as Internet Explorer 6/7/8/9—and other legacy
   *    JavaScript environments
   *  - `5` - To enable syntax first defined in [the ECMAScript 5.1
   *    specification](http://www.ecma-international.org/ecma-262/5.1/index.html).
   *    This includes allowing reserved keywords as object properties.
   *  - `6` - To tell JSHint that your code uses [ECMAScript
   *    6](http://www.ecma-international.org/ecma-262/6.0/index.html) specific
   *    syntax. Note that not all browsers implement them.
   *  - `7` - To enable language features introduced by [ECMAScript
   *    7](https://www.ecma-international.org/ecma-262/7.0/index.html). Notable
   *    additions: the exponentiation operator.
   *  - `8` - To enable language features introduced by [ECMAScript
   *    8](https://www.ecma-international.org/ecma-262/8.0/index.html). Notable
   *    additions: async functions, shared memory, and atomics
   *  - `9` - To enable language features introduced by [ECMAScript
   *    9](https://www.ecma-international.org/ecma-262/9.0/index.html). Notable
   *    additions: asynchronous iteration, rest/spread properties, and various
   *    RegExp extensions
   *  - `10` - To enable language features introduced by [ECMAScript
   *    10](https://www.ecma-international.org/ecma-262/10.0/index.html).
   *    Notable additions: optional catch bindings.
   *  - `11` - To enable language features introduced by ECMAScript 11. Notable
   *    additions: "export * as ns from 'module'", `import.meta`, the nullish
   *    coalescing operator, the BigInt type, the `globalThis` binding,
   *    optional chaining, and dynamic import.
   */
  esversion: 5
};

/**
 * Unstable options allow control for parsing and linting of proposed additions
 * to the JavaScript language. Just like the language features they describe,
 * the presence and behavior of these options is volatile; JSHint reserves the
 * right to remove or modify them between major version releases.
 */
exports.unstable = {
};

// These are JSHint boolean options which are shared with JSLint
// where the definition in JSHint is opposite JSLint
exports.inverted = {
  bitwise : true,
  forin   : true,
  newcap  : true,
  plusplus: true,
  regexp  : true,
  undef   : true,

  // Inverted and renamed, use JSHint name here
  eqeqeq  : true,
  strict  : true
};

exports.validNames = Object.keys(exports.val)
  .concat(Object.keys(exports.bool.relaxing))
  .concat(Object.keys(exports.bool.enforcing))
  .concat(Object.keys(exports.bool.obsolete))
  .concat(Object.keys(exports.bool.environments))
  .concat(["unstable"]);

exports.unstableNames = Object.keys(exports.unstable);

// These are JSHint boolean options which are shared with JSLint
// where the name has been changed but the effect is unchanged
exports.renamed = {
  eqeq   : "eqeqeq",
  windows: "wsh",
  sloppy : "strict"
};

exports.removed = {
  nomen: true,
  onevar: true,
  passfail: true,
  white: true,
  gcl: true,
  smarttabs: true,
  trailing: true
};

// Add options here which should not be automatically enforced by
// `enforceall`.
exports.noenforceall = {
  varstmt: true,
  strict: true,
  regexpu: true
};

},{}],21:[function(require,module,exports){
/**
 * This module defines a set of enum-like values intended for use as bit
 * "flags" during parsing. The ECMAScript grammar defines a number of such
 * "production parameters" to control how certain forms are parsed in context.
 * JSHint implements additional parameters to facilitate detection of lint
 * warnings.
 *
 * An equivalent implementation which described the context in terms of a
 * "lookup table" object would be more idiomatic for a JavaScript project like
 * JSHint. However, because the number of contexts scales with the number of
 * expressions in the input program, this would have non-negligible impact on
 * the process's memory footprint.
 */
module.exports = {
  /**
   * Enabled when parsing expressions within ES2015 "export" declarations,
   * allowing otherwise-unreferenced bindings to be considered "used".
   */
  export: 1,

  /**
   * Enabled when parsing expressions within the head of `for` statements,
   * allowing to distinguish between `for-in` and "C-style" `for` statements.
   */
  noin: 2,

  /**
   * Enabled when the expression begins the statement, allowing the parser to
   * correctly select between the null denotation ("nud") and first null
   * denotation ("fud") parsing strategy.
   */
  initial: 4,

  preAsync: 8,

  async: 16,

  /**
   * Enabled when any exception thrown by the expression will be caught by a
   * TryStatement.
   */
  tryClause: 32,

  /**
   * Enabled when parsing the body of a generator function.
   */
  yield: 64
};

},{}],22:[function(require,module,exports){
/*
 * Regular expressions. Some of these are stupidly long.
 */

/*jshint maxlen:1000 */

"use strict";

// Unsafe comment or string (ax)
exports.unsafeString =
  /@cc|<\/?|script|\]\s*\]|<\s*!|&lt/i;

// Characters in strings that need escaping (nx and nxg)
exports.needEsc =
  /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/;

exports.needEscGlobal =
  /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;

// Star slash (lx)
exports.starSlash = /\*\//;

// Identifier (ix)
exports.identifier = /^([a-zA-Z_$][a-zA-Z0-9_$]*)$/;

// JavaScript URL (jx)
exports.javascriptURL = /^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i;

// Catches /* falls through */ comments (ft)
exports.fallsThrough = /^\s*falls?\sthrough\s*$/;

// very conservative rule (eg: only one space between the start of the comment and the first character)
// to relax the maxlen option
exports.maxlenException = /^(?:(?:\/\/|\/\*|\*) ?)?[^ ]+$/;

// Node.js releases prior to version 8 include a version of the V8 engine which
// incorrectly interprets the character class escape `\s`. The following
// regular expression may be replaced with `/\s/` when JSHint removes support
// for Node.js versions prior to 8.
// Source:
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp
exports.whitespace = /[ \f\n\r\t\v\u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff]/;

exports.nonzeroDigit = /^[1-9]$/;

exports.decimalDigit = /^[0-9]$/;

exports.regexpSyntaxChars = /[\^$\\.*+?()[\]{}|]/;

exports.regexpQuantifiers = /[*+?{]/;

exports.regexpControlEscapes = /[fnrtv]/;

exports.regexpCharClasses = /[dDsSwWpP]/;

// Identifies the "dot" atom in regular expressions
exports.regexpDot = /(^|[^\\])(\\\\)*\./;

},{}],23:[function(require,module,exports){
"use strict";
/**
 * A note on `__proto__`:
 *
 * This file uses ordinary objects to track identifiers that are observed in
 * the input source code. It creates these objects using `Object.create` so
 * that the tracking objects have no prototype, allowing the `__proto__`
 * property to be used to store a value *without* triggering the invocation of
 * the built-in `Object.prototype.__proto__` accessor method. Some environments
 * (e.g. PhantomJS) do not implement the correct semantics for property
 * enumeration. In those environments, methods like `Object.keys` and Lodash's
 * `values` do not include the property name. This file includes a number of
 * branches which ensure that JSHint behaves consistently in those
 * environments. The branches must be ignored by the test coverage verification
 * system because the workaround is not necessary in the environment where
 * coverage is verified (i.e. Node.js).
 */

var _      = require("lodash");
var events = require("events");

// Used to denote membership in lookup tables (a primitive value such as `true`
// would be silently rejected for the property name "__proto__" in some
// environments)
var marker = {};

/**
 * A factory function for creating scope managers. A scope manager tracks
 * bindings, detecting when variables are referenced (through "usages").
 *
 * @param {object} state - the global state object (see `state.js`)
 * @param {Array} predefined - a set of binding names for built-in bindings
 *                             provided by the environment
 * @param {object} exported - a hash for binding names that are intended to be
 *                            referenced in contexts beyond the current program
 *                            code
 * @param {object} declared - a hash for binding names that were defined as
 *                            global bindings via linting configuration
 *
 * @returns {object} - a scope manager
 */
var scopeManager = function(state, predefined, exported, declared) {

  var _current;
  var _scopeStack = [];

  function _newScope(type) {
    _current = {
      "(bindings)": Object.create(null),
      "(usages)": Object.create(null),
      "(labels)": Object.create(null),
      "(parent)": _current,
      "(type)": type,
      "(params)": (type === "functionparams" || type === "catchparams") ? [] : null
    };
    _scopeStack.push(_current);
  }

  _newScope("global");
  _current["(predefined)"] = predefined;

  var _currentFunctBody = _current; // this is the block after the params = function

  var usedPredefinedAndGlobals = Object.create(null);
  var impliedGlobals = Object.create(null);
  var unuseds = [];
  var esModuleExports = [];
  var emitter = new events.EventEmitter();

  function warning(code, token) {
    emitter.emit("warning", {
      code: code,
      token: token,
      data: _.slice(arguments, 2)
    });
  }

  function error(code, token) {
    emitter.emit("warning", {
      code: code,
      token: token,
      data: _.slice(arguments, 2)
    });
  }

  function _setupUsages(bindingName) {
    if (!_current["(usages)"][bindingName]) {
      _current["(usages)"][bindingName] = {
        "(modified)": [],
        "(reassigned)": [],
        "(tokens)": []
      };
    }
  }

  var _getUnusedOption = function(unused_opt) {
    if (unused_opt === undefined) {
      unused_opt = state.option.unused;
    }

    if (unused_opt === true) {
      unused_opt = "last-param";
    }

    return unused_opt;
  };

  var _warnUnused = function(name, tkn, type, unused_opt) {
    var line = tkn.line;
    var chr  = tkn.from;
    var raw_name = tkn.raw_text || name;

    unused_opt = _getUnusedOption(unused_opt);

    var warnable_types = {
      "vars": ["var"],
      "last-param": ["var", "param"],
      "strict": ["var", "param", "last-param"]
    };

    if (unused_opt) {
      if (warnable_types[unused_opt] && warnable_types[unused_opt].indexOf(type) !== -1) {
        warning("W098", { line: line, from: chr }, raw_name);
      }
    }

    // inconsistent - see gh-1894
    if (unused_opt || type === "var") {
      unuseds.push({
        name: name,
        line: line,
        character: chr
      });
    }
  };

  /**
   * Check the current scope for unused identifiers
   */
  function _checkForUnused() {
    if (_current["(type)"] !== "functionparams") {
      var currentBindings = _current["(bindings)"];
      for (var bindingName in currentBindings) {
        if (currentBindings[bindingName]["(type)"] !== "exception" &&
          currentBindings[bindingName]["(unused)"]) {
          _warnUnused(bindingName, currentBindings[bindingName]["(token)"], "var");
        }
      }
      return;
    }

    // Check the current scope for unused parameters and issue warnings as
    // necessary.
    var params = _current["(params)"];

    var param = params.pop();
    var unused_opt;

    while (param) {
      var binding = _current["(bindings)"][param];

      unused_opt = _getUnusedOption(state.funct["(unusedOption)"]);

      // 'undefined' is a special case for the common pattern where `undefined`
      // is used as a formal parameter name to defend against global
      // re-assignment, e.g.
      //
      //     (function(window, undefined) {
      //     })();
      if (param === "undefined")
        return;

      if (binding["(unused)"]) {
        _warnUnused(param, binding["(token)"], "param", state.funct["(unusedOption)"]);
      } else if (unused_opt === "last-param") {
        return;
      }

      param = params.pop();
    }
  }

  /**
   * Find the relevant binding's scope. The owning scope is located by first
   * inspecting the current scope and then moving "downward" through the stack
   * of scopes.
   *
   * @param {string} bindingName - the value of the identifier
   *
   * @returns {Object} - the scope in which the binding was found
   */
  function _getBinding(bindingName) {
    for (var i = _scopeStack.length - 1 ; i >= 0; --i) {
      var scopeBindings = _scopeStack[i]["(bindings)"];
      if (scopeBindings[bindingName]) {
        return scopeBindings;
      }
    }
  }

  /**
   * Determine if a given binding name has been referenced within the current
   * function or any function defined within.
   *
   * @param {string} bindingName - the value of the identifier
   *
   * @returns {boolean}
   */
  function usedSoFarInCurrentFunction(bindingName) {
    for (var i = _scopeStack.length - 1; i >= 0; i--) {
      var current = _scopeStack[i];
      if (current["(usages)"][bindingName]) {
        return current["(usages)"][bindingName];
      }
      if (current === _currentFunctBody) {
        break;
      }
    }
    return false;
  }

  function _checkOuterShadow(bindingName, token) {

    // only check if shadow is outer
    if (state.option.shadow !== "outer") {
      return;
    }

    var isGlobal = _currentFunctBody["(type)"] === "global",
      isNewFunction = _current["(type)"] === "functionparams";

    var outsideCurrentFunction = !isGlobal;
    for (var i = 0; i < _scopeStack.length; i++) {
      var stackItem = _scopeStack[i];

      if (!isNewFunction && _scopeStack[i + 1] === _currentFunctBody) {
        outsideCurrentFunction = false;
      }
      if (outsideCurrentFunction && stackItem["(bindings)"][bindingName]) {
        warning("W123", token, bindingName);
      }
      if (stackItem["(labels)"][bindingName]) {
        warning("W123", token, bindingName);
      }
    }
  }

  function _latedefWarning(type, bindingName, token) {
    var isFunction;

    if (state.option.latedef) {
      isFunction = type === "function" || type === "generator function" ||
        type === "async function";

      // if either latedef is strict and this is a function
      //    or this is not a function
      if ((state.option.latedef === true && isFunction) || !isFunction) {
        warning("W003", token, bindingName);
      }
    }
  }

  var scopeManagerInst = {

    on: function(names, listener) {
      names.split(" ").forEach(function(name) {
        emitter.on(name, listener);
      });
    },

    isPredefined: function(bindingName) {
      return !this.has(bindingName) && _.has(_scopeStack[0]["(predefined)"], bindingName);
    },

    /**
     * Create a new scope within the current scope. As the topmost value, the
     * new scope will be interpreted as the current scope until it is
     * exited--see the `unstack` method.
     *
     * @param {string} [type] - The type of the scope. Valid values are
     *                          "functionparams", "catchparams" and
     *                          "functionouter"
     */
    stack: function(type) {
      var previousScope = _current;
      _newScope(type);

      if (!type && previousScope["(type)"] === "functionparams") {

        _current["(isFuncBody)"] = true;
        _currentFunctBody = _current;
      }
    },

    /**
     * Valldate all binding references and declarations in the current scope
     * and set the next scope on the stack as the active scope.
     */
    unstack: function() {
      // jshint proto: true
      var subScope = _scopeStack.length > 1 ? _scopeStack[_scopeStack.length - 2] : null;
      var isUnstackingFunctionBody = _current === _currentFunctBody,
        isUnstackingFunctionParams = _current["(type)"] === "functionparams",
        isUnstackingFunctionOuter = _current["(type)"] === "functionouter";

      var i, j, isImmutable, isFunction;
      var currentUsages = _current["(usages)"];
      var currentBindings = _current["(bindings)"];
      var usedBindingNameList = Object.keys(currentUsages);

      // See comment, "A note on `__proto__`"
      /* istanbul ignore if */
      if (currentUsages.__proto__ && usedBindingNameList.indexOf("__proto__") === -1) {
        usedBindingNameList.push("__proto__");
      }

      for (i = 0; i < usedBindingNameList.length; i++) {
        var usedBindingName = usedBindingNameList[i];

        var usage = currentUsages[usedBindingName];
        var usedBinding = currentBindings[usedBindingName];
        if (usedBinding) {
          var usedBindingType = usedBinding["(type)"];
          isImmutable = usedBindingType === "const" || usedBindingType === "import";

          if (usedBinding["(useOutsideOfScope)"] && !state.option.funcscope) {
            var usedTokens = usage["(tokens)"];
            for (j = 0; j < usedTokens.length; j++) {
              // Keep the consistency of https://github.com/jshint/jshint/issues/2409
              if (usedBinding["(function)"] === usedTokens[j]["(function)"]) {
                error("W038", usedTokens[j], usedBindingName);
              }
            }
          }

          // mark the binding used
          _current["(bindings)"][usedBindingName]["(unused)"] = false;

          // check for modifying a const
          if (isImmutable && usage["(modified)"]) {
            for (j = 0; j < usage["(modified)"].length; j++) {
              error("E013", usage["(modified)"][j], usedBindingName);
            }
          }

          isFunction = usedBindingType === "function" ||
            usedBindingType === "generator function" ||
            usedBindingType === "async function";

          // check for re-assigning a function declaration
          if ((isFunction || usedBindingType === "class") && usage["(reassigned)"]) {
            for (j = 0; j < usage["(reassigned)"].length; j++) {
              if (!usage["(reassigned)"][j].ignoreW021) {
                warning("W021", usage["(reassigned)"][j], usedBindingName, usedBindingType);
              }
            }
          }
          continue;
        }

        if (subScope) {
          var bindingType = this.bindingtype(usedBindingName);
          isImmutable = bindingType === "const" ||
            (bindingType === null && _scopeStack[0]["(predefined)"][usedBindingName] === false);
          if (isUnstackingFunctionOuter && !isImmutable) {
            if (!state.funct["(outerMutables)"]) {
              state.funct["(outerMutables)"] = [];
            }
            state.funct["(outerMutables)"].push(usedBindingName);
          }

          // not exiting the global scope, so copy the usage down in case its an out of scope usage
          if (!subScope["(usages)"][usedBindingName]) {
            subScope["(usages)"][usedBindingName] = usage;
            if (isUnstackingFunctionBody) {
              subScope["(usages)"][usedBindingName]["(onlyUsedSubFunction)"] = true;
            }
          } else {
            var subScopeUsage = subScope["(usages)"][usedBindingName];
            subScopeUsage["(modified)"] = subScopeUsage["(modified)"].concat(usage["(modified)"]);
            subScopeUsage["(tokens)"] = subScopeUsage["(tokens)"].concat(usage["(tokens)"]);
            subScopeUsage["(reassigned)"] =
              subScopeUsage["(reassigned)"].concat(usage["(reassigned)"]);
          }
        } else {
          // this is exiting global scope, so we finalise everything here - we are at the end of the file
          if (typeof _current["(predefined)"][usedBindingName] === "boolean") {

            // remove the declared token, so we know it is used
            delete declared[usedBindingName];

            // note it as used so it can be reported
            usedPredefinedAndGlobals[usedBindingName] = marker;

            // check for re-assigning a read-only (set to false) predefined
            if (_current["(predefined)"][usedBindingName] === false && usage["(reassigned)"]) {
              for (j = 0; j < usage["(reassigned)"].length; j++) {
                if (!usage["(reassigned)"][j].ignoreW020) {
                  warning("W020", usage["(reassigned)"][j]);
                }
              }
            }
          }
          else {
            // binding usage is not predefined and we have not found a declaration
            // so report as undeclared
            for (j = 0; j < usage["(tokens)"].length; j++) {
              var undefinedToken = usage["(tokens)"][j];
              // if its not a forgiven undefined (e.g. typof x)
              if (!undefinedToken.forgiveUndef) {
                // if undef is on and undef was on when the token was defined
                if (state.option.undef && !undefinedToken.ignoreUndef) {
                  warning("W117", undefinedToken, usedBindingName);
                }
                if (impliedGlobals[usedBindingName]) {
                  impliedGlobals[usedBindingName].line.push(undefinedToken.line);
                } else {
                  impliedGlobals[usedBindingName] = {
                    name: usedBindingName,
                    line: [undefinedToken.line]
                  };
                }
              }
            }
          }
        }
      }

      // if exiting the global scope, we can warn about declared globals that haven't been used yet
      if (!subScope) {
        Object.keys(declared)
          .forEach(function(bindingNotUsed) {
            _warnUnused(bindingNotUsed, declared[bindingNotUsed], "var");
          });
      }

      // If this is not a function boundary, transfer function-scoped bindings to
      // the parent block (a rough simulation of variable hoisting). Previously
      // existing bindings in the parent block should take precedence so that
      // prior usages are not discarded.
      if (subScope && !isUnstackingFunctionBody &&
        !isUnstackingFunctionParams && !isUnstackingFunctionOuter) {
        var bindingNames = Object.keys(currentBindings);
        for (i = 0; i < bindingNames.length; i++) {

          var defBindingName = bindingNames[i];
          var defBinding = currentBindings[defBindingName];

          if (!defBinding["(blockscoped)"] && defBinding["(type)"] !== "exception") {
            var shadowed = subScope["(bindings)"][defBindingName];

            // Do not overwrite a binding if it exists in the parent scope
            // because it is shared by adjacent blocks. Copy the `unused`
            // property so that any references found within the current block
            // are counted toward that higher-level declaration.
            if (shadowed) {
              shadowed["(unused)"] &= defBinding["(unused)"];

            // "Hoist" the variable to the parent block, decorating the binding
            // so that future references, though technically valid, can be
            // reported as "out-of-scope" in the absence of the `funcscope`
            // option.
            } else {
              defBinding["(useOutsideOfScope)"] =
                // Do not warn about out-of-scope usages in the global scope
                _currentFunctBody["(type)"] !== "global" &&
                // When a higher scope contains a binding for the binding, the
                // binding is a re-declaration and should not prompt "used
                // out-of-scope" warnings.
                !this.funct.has(defBindingName, { excludeCurrent: true });

              subScope["(bindings)"][defBindingName] = defBinding;
            }

            delete currentBindings[defBindingName];
          }
        }
      }

      _checkForUnused();

      _scopeStack.pop();
      if (isUnstackingFunctionBody) {
        _currentFunctBody = _scopeStack[_.findLastIndex(_scopeStack, function(scope) {
          // if function or if global (which is at the bottom so it will only return true if we call back)
          return scope["(isFuncBody)"] || scope["(type)"] === "global";
        })];
      }

      _current = subScope;
    },

    /**
     * Add a function parameter to the current scope.
     *
     * @param {string} bindingName - the value of the identifier
     * @param {Token} token
     * @param {string} [type] - binding type; defaults to "param"
     */
    addParam: function(bindingName, token, type) {
      type = type || "param";

      if (type === "exception") {
        // if defined in the current function
        var previouslyDefinedBindingType = this.funct.bindingtype(bindingName);
        if (previouslyDefinedBindingType && previouslyDefinedBindingType !== "exception") {
          // and has not been used yet in the current function scope
          if (!state.option.node) {
            warning("W002", state.tokens.next, bindingName);
          }
        }

        if (state.isStrict() && (bindingName === "arguments" || bindingName === "eval")) {
          warning("E008", token);
        }
      }

      // The variable was declared in the current scope
      if (_.has(_current["(bindings)"], bindingName)) {
        _current["(bindings)"][bindingName].duplicated = true;

      // The variable was declared in an outer scope
      } else {
        // if this scope has the variable defined, it's a re-definition error
        _checkOuterShadow(bindingName, token);

        _current["(bindings)"][bindingName] = {
          "(type)" : type,
          "(token)": token,
          "(unused)": true };

        _current["(params)"].push(bindingName);
      }

      if (_.has(_current["(usages)"], bindingName)) {
        var usage = _current["(usages)"][bindingName];
        // if its in a sub function it is not necessarily an error, just latedef
        if (usage["(onlyUsedSubFunction)"]) {
          _latedefWarning(type, bindingName, token);
        } else {
          // this is a clear illegal usage, but not a syntax error, so emit a
          // warning and not an error
          warning("W003", token, bindingName);
        }
      }
    },

    validateParams: function(isArrow) {
      var isStrict = state.isStrict();
      var currentFunctParamScope = _currentFunctBody["(parent)"];
      // From ECMAScript 2017:
      //
      // > 14.1.2Static Semantics: Early Errors
      // >
      // > [...]
      // > - It is a Syntax Error if IsSimpleParameterList of
      // >   FormalParameterList is false and BoundNames of FormalParameterList
      // >   contains any duplicate elements.
      var isSimple = state.funct['(hasSimpleParams)'];
      // Method definitions are defined in terms of UniqueFormalParameters, so
      // they cannot support duplicate parameter names regardless of strict
      // mode.
      var isMethod = state.funct["(method)"];

      if (!currentFunctParamScope["(params)"]) {
        /* istanbul ignore next */
        return;
      }

      currentFunctParamScope["(params)"].forEach(function(bindingName) {
        var binding = currentFunctParamScope["(bindings)"][bindingName];

        if (binding.duplicated) {
          if (isStrict || isArrow || isMethod || !isSimple) {
            warning("E011", binding["(token)"], bindingName);
          } else if (state.option.shadow !== true) {
            warning("W004", binding["(token)"], bindingName);
          }
        }

        if (isStrict && (bindingName === "arguments" || bindingName === "eval")) {
          warning("E008", binding["(token)"]);
        }
      });
    },

    getUsedOrDefinedGlobals: function() {
      // jshint proto: true
      var list = Object.keys(usedPredefinedAndGlobals);

      // See comment, "A note on `__proto__`"
      /* istanbul ignore if */
      if (usedPredefinedAndGlobals.__proto__ === marker &&
        list.indexOf("__proto__") === -1) {
        list.push("__proto__");
      }

      return list;
    },

    /**
     * Get an array of implied globals
     *
     * @returns {Array.<{ name: string, line: Array.<number>}>}
     */
    getImpliedGlobals: function() {
      // jshint proto: true
      var values = _.values(impliedGlobals);
      var hasProto = false;

      // See comment, "A note on `__proto__`"
      if (impliedGlobals.__proto__) {
        hasProto = values.some(function(value) {
          return value.name === "__proto__";
        });

        /* istanbul ignore if */
        if (!hasProto) {
          values.push(impliedGlobals.__proto__);
        }
      }

      return values;
    },

    /**
     * Get an array of objects describing unused bindings.
     *
     * @returns {Array<Object>}
     */
    getUnuseds: function() {
      return unuseds;
    },

    /**
     * Determine if a given name has been defined in the current scope or any
     * lower scope.
     *
     * @param {string} bindingName - the value of the identifier
     *
     * @return {boolean}
     */
    has: function(bindingName) {
      return Boolean(_getBinding(bindingName));
    },

    /**
     * Retrieve binding described by `bindingName` or null
     *
     * @param {string} bindingName - the value of the identifier
     *
     * @returns {string|null} - the type of the binding or `null` if no such
     *                          binding exists
     */
    bindingtype: function(bindingName) {
      var scopeBindings = _getBinding(bindingName);
      if (scopeBindings) {
        return scopeBindings[bindingName]["(type)"];
      }
      return null;
    },

    /**
     * For the exported options, indicating a variable is used outside the file
     *
     * @param {string} bindingName - the value of the identifier
     */
    addExported: function(bindingName) {
      var globalBindings = _scopeStack[0]["(bindings)"];
      if (_.has(declared, bindingName)) {
        // remove the declared token, so we know it is used
        delete declared[bindingName];
      } else if (_.has(globalBindings, bindingName)) {
        globalBindings[bindingName]["(unused)"] = false;
      } else {
        for (var i = 1; i < _scopeStack.length; i++) {
          var scope = _scopeStack[i];
          // if `scope.(type)` is not defined, it is a block scope
          if (!scope["(type)"]) {
            if (_.has(scope["(bindings)"], bindingName) &&
                !scope["(bindings)"][bindingName]["(blockscoped)"]) {
              scope["(bindings)"][bindingName]["(unused)"] = false;
              return;
            }
          } else {
            break;
          }
        }
        exported[bindingName] = true;
      }
    },

    /**
     * Mark a binding as "exported" by an ES2015 module
     *
     * @param {string} bindingName - the value of the identifier
     * @param {object} token
     */
    setExported: function(localName, exportName) {
      if (exportName) {
        if (esModuleExports.indexOf(exportName.value) > -1) {
          error("E069", exportName, exportName.value);
        }

        esModuleExports.push(exportName.value);
      }

      if (localName) {
        this.block.use(localName.value, localName);
      }
    },

    /**
     * Mark a binding as "initialized." This is necessary to enforce the
     * "temporal dead zone" (TDZ) of block-scoped bindings which are not
     * hoisted.
     *
     * @param {string} bindingName - the value of the identifier
     */
    initialize: function(bindingName) {
      if (_current["(bindings)"][bindingName]) {
        _current["(bindings)"][bindingName]["(initialized)"] = true;
      }
    },

    /**
     * Create a new binding and add it to the current scope. Delegates to the
     * internal `block.add` or `func.add` methods depending on the type.
     * Produces warnings and errors as necessary.
     *
     * @param {string} bindingName
     * @param {Object} opts
     * @param {String} opts.type - the type of the binding e.g. "param", "var",
     *                             "let, "const", "import", "function",
     *                             "generator function", "async function",
     *                             "async generator function"
     * @param {object} opts.token - the token pointing at the declaration
     * @param {boolean} opts.initialized - whether the binding should be
     *                                     created in an "initialized" state.
     */
    addbinding: function(bindingName, opts) {

      var type  = opts.type;
      var token = opts.token;
      var isblockscoped = type === "let" || type === "const" ||
        type === "class" || type === "import" || type === "generator function" ||
        type === "async function" || type === "async generator function";
      var ishoisted = type === "function" || type === "generator function" ||
        type === "async function" || type === "import";
      var isexported    = (isblockscoped ? _current : _currentFunctBody)["(type)"] === "global" &&
                          _.has(exported, bindingName);

      // outer shadow check (inner is only on non-block scoped)
      _checkOuterShadow(bindingName, token);

      if (state.isStrict() && (bindingName === "arguments" || bindingName === "eval")) {
        warning("E008", token);
      }

      if (isblockscoped) {

        var declaredInCurrentScope = _current["(bindings)"][bindingName];
        // for block scoped variables, params are seen in the current scope as the root function
        // scope, so check these too.
        if (!declaredInCurrentScope && _current === _currentFunctBody &&
          _current["(type)"] !== "global") {
          declaredInCurrentScope = !!_currentFunctBody["(parent)"]["(bindings)"][bindingName];
        }

        // if its not already defined (which is an error, so ignore) and is used in TDZ
        if (!declaredInCurrentScope && _current["(usages)"][bindingName]) {
          var usage = _current["(usages)"][bindingName];
          // if its in a sub function it is not necessarily an error, just latedef
          if (usage["(onlyUsedSubFunction)"] || ishoisted) {
            _latedefWarning(type, bindingName, token);
          } else if (!ishoisted) {
            // this is a clear illegal usage for block scoped variables
            warning("E056", token, bindingName, type);
          }
        }

        // If this scope has already declared a binding with the same name,
        // then this represents a redeclaration error if:
        //
        // 1. it is a "hoisted" block-scoped binding within a block. For
        //    instance: generator functions may be redeclared in the global
        //    scope but not within block statements
        // 2. this is not a "hoisted" block-scoped binding
        if (declaredInCurrentScope &&
          (!ishoisted || (_current["(type)"] !== "global" || type === "import"))) {
          warning("E011", token, bindingName);
        }
        else if (state.option.shadow === "outer") {

          // if shadow is outer, for block scope we want to detect any shadowing within this function
          if (scopeManagerInst.funct.has(bindingName)) {
            warning("W004", token, bindingName);
          }
        }

        scopeManagerInst.block.add(
          bindingName, type, token, !isexported, opts.initialized
        );

      } else {

        var declaredInCurrentFunctionScope = scopeManagerInst.funct.has(bindingName);

        // check for late definition, ignore if already declared
        if (!declaredInCurrentFunctionScope && usedSoFarInCurrentFunction(bindingName)) {
          _latedefWarning(type, bindingName, token);
        }

        // defining with a var or a function when a block scope variable of the same name
        // is in scope is an error
        if (scopeManagerInst.funct.has(bindingName, { onlyBlockscoped: true })) {
          warning("E011", token, bindingName);
        } else if (state.option.shadow !== true) {
          // now since we didn't get any block scope variables, test for var/function
          // shadowing
          if (declaredInCurrentFunctionScope && bindingName !== "__proto__") {

            // see https://github.com/jshint/jshint/issues/2400
            if (_currentFunctBody["(type)"] !== "global") {
              warning("W004", token, bindingName);
            }
          }
        }

        scopeManagerInst.funct.add(bindingName, type, token, !isexported);

        if (_currentFunctBody["(type)"] === "global" && !state.impliedClosure()) {
          usedPredefinedAndGlobals[bindingName] = marker;
        }
      }
    },

    funct: {
      /**
       * Return the type of the provided binding given certain options
       *
       * @param {string} bindingName
       * @param {Object=} [options]
       * @param {boolean} [options.onlyBlockscoped] - only include block scoped
       *                                              bindings
       * @param {boolean} [options.excludeParams] - exclude the param scope
       * @param {boolean} [options.excludeCurrent] - exclude the current scope
       *
       * @returns {String}
       */
      bindingtype: function(bindingName, options) {
        var onlyBlockscoped = options && options.onlyBlockscoped;
        var excludeParams = options && options.excludeParams;
        var currentScopeIndex = _scopeStack.length - (options && options.excludeCurrent ? 2 : 1);
        for (var i = currentScopeIndex; i >= 0; i--) {
          var current = _scopeStack[i];
          if (current["(bindings)"][bindingName] &&
            (!onlyBlockscoped || current["(bindings)"][bindingName]["(blockscoped)"])) {
            return current["(bindings)"][bindingName]["(type)"];
          }
          var scopeCheck = excludeParams ? _scopeStack[ i - 1 ] : current;
          if (scopeCheck && scopeCheck["(type)"] === "functionparams") {
            return null;
          }
        }
        return null;
      },

      /**
       * Determine whether a `break` statement label exists in the function
       * scope.
       *
       * @param {string} labelName - the value of the identifier
       *
       * @returns {boolean}
       */
      hasLabel: function(labelName) {
        for (var i = _scopeStack.length - 1; i >= 0; i--) {
          var current = _scopeStack[i];

          if (current["(labels)"][labelName]) {
            return true;
          }
          if (current["(type)"] === "functionparams") {
            return false;
          }
        }
        return false;
      },

      /**
       * Determine if a given name has been defined in the current function
       * scope.
       *
       * @param {string} bindingName - the value of the identifier
       * @param {object} options - options as supported by the
       *                           `funct.bindingtype` method
       *
       * @return {boolean}
       */
      has: function(bindingName, options) {
        return Boolean(this.bindingtype(bindingName, options));
      },

      /**
       * Create a new function-scoped binding and add it to the current scope.
       * See the `block.add` method for coresponding logic to create
       * block-scoped bindings.
       *
       * @param {string} bindingName - the value of the identifier
       * @param {string} type - the type of the binding; either "function" or
       *                        "var"
       * @param {object} tok - the token that triggered the definition
       * @param {boolean} unused - `true` if the binding has not been
       *                           referenced
       */
      add: function(bindingName, type, tok, unused) {
        _current["(bindings)"][bindingName] = {
          "(type)" : type,
          "(token)": tok,
          "(blockscoped)": false,
          "(function)": _currentFunctBody,
          "(unused)": unused };
      }
    },

    block: {

      /**
       * Determine whether the current block scope is the global scope.
       *
       * @returns Boolean
       */
      isGlobal: function() {
        return _current["(type)"] === "global";
      },

      /**
       * Resolve a reference to a binding and mark the corresponding binding as
       * "used."
       *
       * @param {string} bindingName - the value of the identifier
       * @param {object} token - the token value that triggered the reference
       */
      use: function(bindingName, token) {
        // If the name resolves to a parameter of the current function, then do
        // not store usage. This is because in cases such as the following:
        //
        //     function(a) {
        //       var a;
        //       a = a;
        //     }
        //
        // the usage of `a` will resolve to the parameter, not to the unset
        // variable binding.
        var paramScope = _currentFunctBody["(parent)"];
        if (paramScope && paramScope["(bindings)"][bindingName] &&
          paramScope["(bindings)"][bindingName]["(type)"] === "param") {

          // then check its not declared by a block scope variable
          if (!scopeManagerInst.funct.has(bindingName,
                { excludeParams: true, onlyBlockscoped: true })) {
            paramScope["(bindings)"][bindingName]["(unused)"] = false;
          }
        }

        if (token && (state.ignored.W117 || state.option.undef === false)) {
          token.ignoreUndef = true;
        }

        _setupUsages(bindingName);

        _current["(usages)"][bindingName]["(onlyUsedSubFunction)"] = false;

        if (token) {
          token["(function)"] = _currentFunctBody;
          _current["(usages)"][bindingName]["(tokens)"].push(token);
        }

        // Block-scoped bindings can't be used within their initializer due to
        // "temporal dead zone" (TDZ) restrictions.
        var binding = _current["(bindings)"][bindingName];
        if (binding && binding["(blockscoped)"] && !binding["(initialized)"]) {
          error("E056", token, bindingName, binding["(type)"]);
        }
      },

      reassign: function(bindingName, token) {
        token.ignoreW020 = state.ignored.W020;
        token.ignoreW021 = state.ignored.W021;

        this.modify(bindingName, token);

        _current["(usages)"][bindingName]["(reassigned)"].push(token);
      },

      modify: function(bindingName, token) {

        _setupUsages(bindingName);

        _current["(usages)"][bindingName]["(onlyUsedSubFunction)"] = false;
        _current["(usages)"][bindingName]["(modified)"].push(token);
      },

      /**
       * Create a new block-scoped binding and add it to the current scope. See
       * the `funct.add` method for coresponding logic to create
       * function-scoped bindings.
       *
       * @param {string} bindingName - the value of the identifier
       * @param {string} type - the type of the binding; one of "class",
       *                        "const", "function", "import", or "let"
       * @param {object} tok - the token that triggered the definition
       * @param {boolean} unused - `true` if the binding has not been
       *                           referenced
       * @param {boolean} initialized - `true` if the binding has been
       *                                initialized (as is the case with
       *                                bindings created via `import`
       *                                declarations)
       */
      add: function(bindingName, type, tok, unused, initialized) {
        _current["(bindings)"][bindingName] = {
          "(type)" : type,
          "(token)": tok,
          "(initialized)": !!initialized,
          "(blockscoped)": true,
          "(unused)": unused };
      },

      addLabel: function(labelName, opts) {
        var token = opts.token;
        if (scopeManagerInst.funct.hasLabel(labelName)) {
          warning("E011", token, labelName);
        }
        else if (state.option.shadow === "outer") {
          if (scopeManagerInst.funct.has(labelName)) {
            warning("W004", token, labelName);
          } else {
            _checkOuterShadow(labelName, token);
          }
        }
        _current["(labels)"][labelName] = token;
      }
    }
  };
  return scopeManagerInst;
};

module.exports = scopeManager;

},{"events":11,"lodash":12}],24:[function(require,module,exports){
"use strict";
var NameStack = require("./name-stack.js");

var state = {
  syntax: {},

  /**
   * Determine if the code currently being linted is strict mode code.
   *
   * @returns {boolean}
   */
  isStrict: function() {
    return !!this.directive["use strict"] || this.inClassBody ||
      this.option.module || this.option.strict === "implied";
  },

  /**
   * Determine if the current state warrants a warning for statements outside
   * of strict mode code.
   *
   * While emitting warnings based on function scope would be more intuitive
   * (and less noisy), JSHint observes statement-based semantics in order to
   * preserve legacy behavior.
   *
   * This method does not take the state of the parser into account, making no
   * distinction between global code and function code. Because the "missing
   * 'use strict'" warning is *also* reported at function boundaries, this
   * function interprets `strict` option values `true` and `undefined` as
   * equivalent.
   */
  stmtMissingStrict: function() {
    if (this.option.strict === "global") {
      return true;
    }

    if (this.option.strict === false) {
      return false;
    }

    if (this.option.globalstrict) {
      return true;
    }

    return false;
  },

  allowsGlobalUsd: function() {
    return this.option.strict === "global" || this.option.globalstrict ||
      this.option.module || this.impliedClosure();
  },

  /**
   * Determine if the current configuration describes an environment that is
   * wrapped in an immediately-invoked function expression prior to evaluation.
   *
   * @returns {boolean}
   */
  impliedClosure: function() {
    return this.option.node || this.option.phantom || this.option.browserify;
  },

  // Assumption: chronologically ES3 < ES5 < ES6 < Moz

  inMoz: function() {
    return this.option.moz;
  },

  /**
   * Determine if constructs introduced in ECMAScript 11 should be accepted.
   *
   * @returns {boolean}
   */
  inES11: function() {
    return this.esVersion >= 11;
  },

  /**
   * Determine if constructs introduced in ECMAScript 10 should be accepted.
   *
   * @returns {boolean}
   */
  inES10: function() {
    return this.esVersion >= 10;
  },

  /**
   * Determine if constructs introduced in ECMAScript 9 should be accepted.
   *
   * @returns {boolean}
   */
  inES9: function() {
    return this.esVersion >= 9;
  },

  /**
   * Determine if constructs introduced in ECMAScript 8 should be accepted.
   *
   * @returns {boolean}
   */
  inES8: function() {
    return this.esVersion >= 8;
  },

  /**
   * Determine if constructs introduced in ECMAScript 7 should be accepted.
   *
   * @returns {boolean}
   */
  inES7: function() {
    return this.esVersion >= 7;
  },

  /**
   * Determine if constructs introduced in ECMAScript 6 should be accepted.
   *
   * @param {boolean} strict - When `true`, do not interpret the `moz` option
   *                           as ECMAScript 6
   *
   * @returns {boolean}
   */
  inES6: function(strict) {
    if (!strict && this.option.moz) {
      return true;
    }

    return this.esVersion >= 6;
  },

  /**
   * Determine if constructs introduced in ECMAScript 5 should be accepted.
   *
   * @returns {boolean}
   */
  inES5: function() {
    return !this.esVersion || this.esVersion >= 5 || this.option.moz;
  },

  /**
   * Determine the current version of the input language by inspecting the
   * value of all ECMAScript-version-related options. This logic is necessary
   * to ensure compatibility with deprecated options `es3`, `es5`, and
   * `esnext`, and it may be drastically simplified when those options are
   * removed.
   *
   * @returns {string|null} - the name of any incompatible option detected,
   *                          `null` otherwise
   */
  inferEsVersion: function() {
    var badOpt = null;

    if (this.option.esversion) {
      if (this.option.es3) {
        badOpt = "es3";
      } else if (this.option.es5) {
        badOpt = "es5";
      } else if (this.option.esnext) {
        badOpt = "esnext";
      }

      if (badOpt) {
        return badOpt;
      }

      if (this.option.esversion === 2015) {
        this.esVersion = 6;
      } else {
        this.esVersion = this.option.esversion;
      }
    } else if (this.option.es3) {
      this.esVersion = 3;
    } else if (this.option.esnext) {
      this.esVersion = 6;
    }

    return null;
  },

  reset: function() {
    this.tokens = {
      prev: null,
      next: null,
      curr: null
    };

    this.option = { unstable: {} };
    this.esVersion = 5;
    this.funct = null;
    this.ignored = {};
    /**
     * A lookup table for active directives whose keys are the value of the
     * directives and whose values are the tokens which enabled the directives.
     */
    this.directive = Object.create(null);
    this.jsonMode = false;
    this.lines = [];
    this.tab = "";
    this.cache = {}; // Node.JS doesn't have Map. Sniff.
    this.ignoredLines = {};
    this.forinifcheckneeded = false;
    this.nameStack = new NameStack();
    this.inClassBody = false;
  }
};

exports.state = state;

},{"./name-stack.js":19}],25:[function(require,module,exports){
"use strict";

exports.register = function(linter) {
  // Check for properties named __proto__. This special property was
  // deprecated and then re-introduced for ES6.

  linter.on("Identifier", function style_scanProto(data) {
    if (linter.getOption("proto")) {
      return;
    }

    if (data.name === "__proto__") {
      linter.warn("W103", {
        line: data.line,
        char: data.char,
        data: [ data.name, "6" ]
      });
    }
  });

  // Check for properties named __iterator__. This is a special property
  // available only in browsers with JavaScript 1.7 implementation, but
  // it is deprecated for ES6

  linter.on("Identifier", function style_scanIterator(data) {
    if (linter.getOption("iterator")) {
      return;
    }

    if (data.name === "__iterator__") {
      linter.warn("W103", {
        line: data.line,
        char: data.char,
        data: [ data.name ]
      });
    }
  });

  // Check that all identifiers are using camelCase notation.
  // Exceptions: names like MY_VAR and _myVar.

  linter.on("Identifier", function style_scanCamelCase(data) {
    if (!linter.getOption("camelcase")) {
      return;
    }

    if (data.name.replace(/^_+|_+$/g, "").indexOf("_") > -1 && !data.name.match(/^[A-Z0-9_]*$/)) {
      linter.warn("W106", {
        line: data.line,
        char: data.char,
        data: [ data.name ]
      });
    }
  });

  // Enforce consistency in style of quoting.

  linter.on("String", function style_scanQuotes(data) {
    var quotmark = linter.getOption("quotmark");
    var code;

    if (!quotmark) {
      return;
    }

    // If quotmark is set to 'single' warn about all double-quotes.

    if (quotmark === "single" && data.quote !== "'") {
      code = "W109";
    }

    // If quotmark is set to 'double' warn about all single-quotes.

    if (quotmark === "double" && data.quote !== "\"") {
      code = "W108";
    }

    // If quotmark is set to true, remember the first quotation style
    // and then warn about all others.

    if (quotmark === true) {
      if (!linter.getCache("quotmark")) {
        linter.setCache("quotmark", data.quote);
      }

      if (linter.getCache("quotmark") !== data.quote) {
        code = "W110";
      }
    }

    if (code) {
      linter.warn(code, {
        line: data.line,
        char: data.char,
      });
    }
  });

  linter.on("Number", function style_scanNumbers(data) {
    if (data.value.charAt(0) === ".") {
      // Warn about a leading decimal point.
      linter.warn("W008", {
        line: data.line,
        char: data.char,
        data: [ data.value ]
      });
    }

    if (data.value.substr(data.value.length - 1) === ".") {
      // Warn about a trailing decimal point.
      linter.warn("W047", {
        line: data.line,
        char: data.char,
        data: [ data.value ]
      });
    }

    if (/^00+/.test(data.value)) {
      // Multiple leading zeroes.
      linter.warn("W046", {
        line: data.line,
        char: data.char,
        data: [ data.value ]
      });
    }
  });

  // Warn about script URLs.

  linter.on("String", function style_scanJavaScriptURLs(data) {
    var re = /^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i;

    if (linter.getOption("scripturl")) {
      return;
    }

    if (re.test(data.value)) {
      linter.warn("W107", {
        line: data.line,
        char: data.char
      });
    }
  });
};

},{}],26:[function(require,module,exports){
/*
 * Determine whether a given string is a valid UnicodePropertyValueExpression.
 */

"use strict";

module.exports = function validate(sequence) {
  var equalSignIndex = sequence.indexOf("=");

  if (equalSignIndex === -1) {
    return sequence in names.binary || sequence in values.general;
  }

  var name = sequence.substr(0, equalSignIndex);
  var value = sequence.substr(equalSignIndex + 1);

  if (name === "General_Category" || name === "gc") {
    return value in values.general;
  } if (name === "Script" || name === "sc" || name === "Script_Extensions" || name === "scx") {
    return value in values.script;
  }

  return false;
};


var names = {
  nonBinary: Object.create(null),
  binary: Object.create(null)
};
var values = {
  general: Object.create(null),
  script: Object.create(null)
};

var nb = names.nonBinary;
nb.General_Category = true;
nb.gc = true;
nb.Script = true;
nb.sc = true;
nb.Script_Extensions = true;
nb.scx = true;

var b = names.binary;
b.ASCII = true;
b.ASCII_Hex_Digit = true;
b.AHex = true;
b.Alphabetic = true;
b.Alpha = true;
b.Any = true;
b.Assigned = true;
b.Bidi_Control = true;
b.Bidi_C = true;
b.Bidi_Mirrored = true;
b.Bidi_M = true;
b.Case_Ignorable = true;
b.CI = true;
b.Cased = true;
b.Changes_When_Casefolded = true;
b.CWCF = true;
b.Changes_When_Casemapped = true;
b.CWCM = true;
b.Changes_When_Lowercased = true;
b.CWL = true;
b.Changes_When_NFKC_Casefolded = true;
b.CWKCF = true;
b.Changes_When_Titlecased = true;
b.CWT = true;
b.Changes_When_Uppercased = true;
b.CWU = true;
b.Dash = true;
b.Default_Ignorable_Code_Point = true;
b.DI = true;
b.Deprecated = true;
b.Dep = true;
b.Diacritic = true;
b.Dia = true;
b.Emoji = true;
b.Emoji_Component = true;
b.EComp = true;
b.Emoji_Modifier = true;
b.EMod = true;
b.Emoji_Modifier_Base = true;
b.EBase = true;
b.Emoji_Presentation = true;
b.EPres = true;
b.Extended_Pictographic = true;
b.ExtPict = true;
b.Extender = true;
b.Ext = true;
b.Grapheme_Base = true;
b.Gr_Base = true;
b.Grapheme_Extend = true;
b.Gr_Ext = true;
b.Hex_Digit = true;
b.Hex = true;
b.IDS_Binary_Operator = true;
b.IDSB = true;
b.IDS_Trinary_Operator = true;
b.IDST = true;
b.ID_Continue = true;
b.IDC = true;
b.ID_Start = true;
b.IDS = true;
b.Ideographic = true;
b.Ideo = true;
b.Join_Control = true;
b.Join_C = true;
b.Logical_Order_Exception = true;
b.LOE = true;
b.Lowercase = true;
b.Lower = true;
b.Math = true;
b.Noncharacter_Code_Point = true;
b.NChar = true;
b.Pattern_Syntax = true;
b.Pat_Syn = true;
b.Pattern_White_Space = true;
b.Pat_WS = true;
b.Quotation_Mark = true;
b.QMark = true;
b.Radical = true;
b.Regional_Indicator = true;
b.RI = true;
b.Sentence_Terminal = true;
b.STerm = true;
b.Soft_Dotted = true;
b.SD = true;
b.Terminal_Punctuation = true;
b.Term = true;
b.Unified_Ideograph = true;
b.UIdeo = true;
b.Uppercase = true;
b.Upper = true;
b.Variation_Selector = true;
b.VS = true;
b.White_Space = true;
b.space = true;
b.XID_Continue = true;
b.XIDC = true;
b.XID_Start = true;
b.XIDS = true;

var g = values.general;
g.Cased_Letter = true;
g.LC = true;
g.Close_Punctuation = true;
g.Pe = true;
g.Connector_Punctuation = true;
g.Pc = true;
g.Control = true;
g.Cc = true;
g.cntrl = true;
g.Currency_Symbol = true;
g.Sc = true;
g.Dash_Punctuation = true;
g.Pd = true;
g.Decimal_Number = true;
g.Nd = true;
g.digit = true;
g.Enclosing_Mark = true;
g.Me = true;
g.Final_Punctuation = true;
g.Pf = true;
g.Format = true;
g.Cf = true;
g.Initial_Punctuation = true;
g.Pi = true;
g.Letter = true;
g.L = true;
g.Letter_Number = true;
g.Nl = true;
g.Line_Separator = true;
g.Zl = true;
g.Lowercase_Letter = true;
g.Ll = true;
g.Mark = true;
g.M = true;
g.Combining_Mark = true;
g.Math_Symbol = true;
g.Sm = true;
g.Modifier_Letter = true;
g.Lm = true;
g.Modifier_Symbol = true;
g.Sk = true;
g.Nonspacing_Mark = true;
g.Mn = true;
g.Number = true;
g.N = true;
g.Open_Punctuation = true;
g.Ps = true;
g.Other = true;
g.C = true;
g.Other_Letter = true;
g.Lo = true;
g.Other_Number = true;
g.No = true;
g.Other_Punctuation = true;
g.Po = true;
g.Other_Symbol = true;
g.So = true;
g.Paragraph_Separator = true;
g.Zp = true;
g.Private_Use = true;
g.Co = true;
g.Punctuation = true;
g.P = true;
g.punct = true;
g.Separator = true;
g.Z = true;
g.Space_Separator = true;
g.Zs = true;
g.Spacing_Mark = true;
g.Mc = true;
g.Surrogate = true;
g.Cs = true;
g.Symbol = true;
g.S = true;
g.Titlecase_Letter = true;
g.Lt = true;
g.Unassigned = true;
g.Cn = true;
g.Uppercase_Letter = true;
g.Lu = true;

var s = values.script;
s.Adlam = true;
s.Adlm = true;
s.Ahom = true;
s.Anatolian_Hieroglyphs = true;
s.Hluw = true;
s.Arabic = true;
s.Arab = true;
s.Armenian = true;
s.Armn = true;
s.Avestan = true;
s.Avst = true;
s.Balinese = true;
s.Bali = true;
s.Bamum = true;
s.Bamu = true;
s.Bassa_Vah = true;
s.Bass = true;
s.Batak = true;
s.Batk = true;
s.Bengali = true;
s.Beng = true;
s.Bhaiksuki = true;
s.Bhks = true;
s.Bopomofo = true;
s.Bopo = true;
s.Brahmi = true;
s.Brah = true;
s.Braille = true;
s.Brai = true;
s.Buginese = true;
s.Bugi = true;
s.Buhid = true;
s.Buhd = true;
s.Canadian_Aboriginal = true;
s.Cans = true;
s.Carian = true;
s.Cari = true;
s.Caucasian_Albanian = true;
s.Aghb = true;
s.Chakma = true;
s.Cakm = true;
s.Cham = true;
s.Chorasmian = true;
s.Chrs = true;
s.Cherokee = true;
s.Cher = true;
s.Common = true;
s.Zyyy = true;
s.Coptic = true;
s.Copt = true;
s.Qaac = true;
s.Cuneiform = true;
s.Xsux = true;
s.Cypriot = true;
s.Cprt = true;
s.Cyrillic = true;
s.Cyrl = true;
s.Deseret = true;
s.Dsrt = true;
s.Devanagari = true;
s.Deva = true;
s.Dives_Akuru = true;
s.Diak = true;
s.Dogra = true;
s.Dogr = true;
s.Duployan = true;
s.Dupl = true;
s.Egyptian_Hieroglyphs = true;
s.Egyp = true;
s.Elbasan = true;
s.Elba = true;
s.Elymaic = true;
s.Elym = true;
s.Ethiopic = true;
s.Ethi = true;
s.Georgian = true;
s.Geor = true;
s.Glagolitic = true;
s.Glag = true;
s.Gothic = true;
s.Goth = true;
s.Grantha = true;
s.Gran = true;
s.Greek = true;
s.Grek = true;
s.Gujarati = true;
s.Gujr = true;
s.Gunjala_Gondi = true;
s.Gong = true;
s.Gurmukhi = true;
s.Guru = true;
s.Han = true;
s.Hani = true;
s.Hangul = true;
s.Hang = true;
s.Hanifi_Rohingya = true;
s.Rohg = true;
s.Hanunoo = true;
s.Hano = true;
s.Hatran = true;
s.Hatr = true;
s.Hebrew = true;
s.Hebr = true;
s.Hiragana = true;
s.Hira = true;
s.Imperial_Aramaic = true;
s.Armi = true;
s.Inherited = true;
s.Zinh = true;
s.Qaai = true;
s.Inscriptional_Pahlavi = true;
s.Phli = true;
s.Inscriptional_Parthian = true;
s.Prti = true;
s.Javanese = true;
s.Java = true;
s.Kaithi = true;
s.Kthi = true;
s.Kannada = true;
s.Knda = true;
s.Katakana = true;
s.Kana = true;
s.Kayah_Li = true;
s.Kali = true;
s.Kharoshthi = true;
s.Khar = true;
s.Khitan_Small_Script = true;
s.Kits = true;
s.Khmer = true;
s.Khmr = true;
s.Khojki = true;
s.Khoj = true;
s.Khudawadi = true;
s.Sind = true;
s.Lao = true;
s.Laoo = true;
s.Latin = true;
s.Latn = true;
s.Lepcha = true;
s.Lepc = true;
s.Limbu = true;
s.Limb = true;
s.Linear_A = true;
s.Lina = true;
s.Linear_B = true;
s.Linb = true;
s.Lisu = true;
s.Lycian = true;
s.Lyci = true;
s.Lydian = true;
s.Lydi = true;
s.Mahajani = true;
s.Mahj = true;
s.Makasar = true;
s.Maka = true;
s.Malayalam = true;
s.Mlym = true;
s.Mandaic = true;
s.Mand = true;
s.Manichaean = true;
s.Mani = true;
s.Marchen = true;
s.Marc = true;
s.Medefaidrin = true;
s.Medf = true;
s.Masaram_Gondi = true;
s.Gonm = true;
s.Meetei_Mayek = true;
s.Mtei = true;
s.Mende_Kikakui = true;
s.Mend = true;
s.Meroitic_Cursive = true;
s.Merc = true;
s.Meroitic_Hieroglyphs = true;
s.Mero = true;
s.Miao = true;
s.Plrd = true;
s.Modi = true;
s.Mongolian = true;
s.Mong = true;
s.Mro = true;
s.Mroo = true;
s.Multani = true;
s.Mult = true;
s.Myanmar = true;
s.Mymr = true;
s.Nabataean = true;
s.Nbat = true;
s.Nandinagari = true;
s.Nand = true;
s.New_Tai_Lue = true;
s.Talu = true;
s.Newa = true;
s.Nko = true;
s.Nkoo = true;
s.Nushu = true;
s.Nshu = true;
s.Nyiakeng_Puachue_Hmong = true;
s.Hmnp = true;
s.Ogham = true;
s.Ogam = true;
s.Ol_Chiki = true;
s.Olck = true;
s.Old_Hungarian = true;
s.Hung = true;
s.Old_Italic = true;
s.Ital = true;
s.Old_North_Arabian = true;
s.Narb = true;
s.Old_Permic = true;
s.Perm = true;
s.Old_Persian = true;
s.Xpeo = true;
s.Old_Sogdian = true;
s.Sogo = true;
s.Old_South_Arabian = true;
s.Sarb = true;
s.Old_Turkic = true;
s.Orkh = true;
s.Oriya = true;
s.Orya = true;
s.Osage = true;
s.Osge = true;
s.Osmanya = true;
s.Osma = true;
s.Pahawh_Hmong = true;
s.Hmng = true;
s.Palmyrene = true;
s.Palm = true;
s.Pau_Cin_Hau = true;
s.Pauc = true;
s.Phags_Pa = true;
s.Phag = true;
s.Phoenician = true;
s.Phnx = true;
s.Psalter_Pahlavi = true;
s.Phlp = true;
s.Rejang = true;
s.Rjng = true;
s.Runic = true;
s.Runr = true;
s.Samaritan = true;
s.Samr = true;
s.Saurashtra = true;
s.Saur = true;
s.Sharada = true;
s.Shrd = true;
s.Shavian = true;
s.Shaw = true;
s.Siddham = true;
s.Sidd = true;
s.SignWriting = true;
s.Sgnw = true;
s.Sinhala = true;
s.Sinh = true;
s.Sogdian = true;
s.Sogd = true;
s.Sora_Sompeng = true;
s.Sora = true;
s.Soyombo = true;
s.Soyo = true;
s.Sundanese = true;
s.Sund = true;
s.Syloti_Nagri = true;
s.Sylo = true;
s.Syriac = true;
s.Syrc = true;
s.Tagalog = true;
s.Tglg = true;
s.Tagbanwa = true;
s.Tagb = true;
s.Tai_Le = true;
s.Tale = true;
s.Tai_Tham = true;
s.Lana = true;
s.Tai_Viet = true;
s.Tavt = true;
s.Takri = true;
s.Takr = true;
s.Tamil = true;
s.Taml = true;
s.Tangut = true;
s.Tang = true;
s.Telugu = true;
s.Telu = true;
s.Thaana = true;
s.Thaa = true;
s.Thai = true;
s.Tibetan = true;
s.Tibt = true;
s.Tifinagh = true;
s.Tfng = true;
s.Tirhuta = true;
s.Tirh = true;
s.Ugaritic = true;
s.Ugar = true;
s.Vai = true;
s.Vaii = true;
s.Wancho = true;
s.Wcho = true;
s.Warang_Citi = true;
s.Wara = true;
s.Yezidi = true;
s.Yezi = true;
s.Yi = true;
s.Yiii = true;
s.Zanabazar_Square = true;
s.Zanb = true;

},{}],27:[function(require,module,exports){
// jshint -W001

"use strict";

// Identifiers provided by the ECMAScript standard.

exports.reservedVars = {
  NaN       : false,
  undefined : false
};

exports.ecmaIdentifiers = {
  3: {
    Array              : false,
    Boolean            : false,
    Date               : false,
    decodeURI          : false,
    decodeURIComponent : false,
    encodeURI          : false,
    encodeURIComponent : false,
    Error              : false,
    "eval"             : false,
    EvalError          : false,
    Function           : false,
    hasOwnProperty     : false,
    Infinity           : false,
    isFinite           : false,
    isNaN              : false,
    Math               : false,
    Number             : false,
    Object             : false,
    parseInt           : false,
    parseFloat         : false,
    RangeError         : false,
    ReferenceError     : false,
    RegExp             : false,
    String             : false,
    SyntaxError        : false,
    TypeError          : false,
    URIError           : false
  },
  5: {
    JSON               : false
  },
  6: {
    ArrayBuffer        : false,
    DataView           : false,
    Float32Array       : false,
    Float64Array       : false,
    Int8Array          : false,
    Int16Array         : false,
    Int32Array         : false,
    Map                : false,
    Promise            : false,
    Proxy              : false,
    Reflect            : false,
    Set                : false,
    Symbol             : false,
    Uint8Array         : false,
    Uint16Array        : false,
    Uint32Array        : false,
    Uint8ClampedArray  : false,
    WeakMap            : false,
    WeakSet            : false
  },
  8: {
    Atomics            : false,
    SharedArrayBuffer  : false
  },
  11: {
    BigInt             : false,
    globalThis         : false
  }
};

// Global variables commonly provided by a web browser environment.

exports.browser = {
  Audio                : false,
  Blob                 : false,
  addEventListener     : false, // EventTarget
  applicationCache     : false,
  atob                 : false, // WindowOrWorkerGlobalScope
  blur                 : false,
  btoa                 : false, // WindowOrWorkerGlobalScope
  cancelAnimationFrame : false,
  CanvasGradient       : false,
  CanvasPattern        : false,
  CanvasRenderingContext2D: false,
  CSS                  : false,
  CSSImportRule        : false,
  CSSGroupingRule      : false,
  CSSMarginRule        : false,
  CSSMediaRule         : false,
  CSSNamespaceRule     : false,
  CSSPageRule          : false,
  CSSRule              : false,
  CSSRuleList          : false,
  CSSStyleDeclaration  : false,
  CSSStyleRule         : false,
  CSSStyleSheet        : false,
  clearInterval        : false, // WindowOrWorkerGlobalScope
  clearTimeout         : false, // WindowOrWorkerGlobalScope
  close                : false,
  closed               : false,
  Comment              : false,
  CompositionEvent     : false,
  createImageBitmap    : false, // WindowOrWorkerGlobalScope
  CustomEvent          : false,
  DOMParser            : false,
  defaultStatus        : false,
  dispatchEvent        : false, // EventTarget
  Document             : false,
  document             : false,
  DocumentFragment     : false,
  Element              : false,
  ElementTimeControl   : false,
  Event                : false,
  event                : false,
  fetch                : false,
  File                 : false,
  FileList             : false,
  FileReader           : false,
  FormData             : false,
  focus                : false,
  frames               : false,
  getComputedStyle     : false,
  Headers              : false,
  HTMLAnchorElement    : false,
  HTMLAreaElement      : false,
  HTMLAudioElement     : false,
  HTMLBaseElement      : false,
  HTMLBlockquoteElement: false,
  HTMLBodyElement      : false,
  HTMLBRElement        : false,
  HTMLButtonElement    : false,
  HTMLCanvasElement    : false,
  HTMLCollection       : false,
  HTMLDataElement      : false,
  HTMLDataListElement  : false,
  HTMLDetailsElement   : false,
  HTMLDialogElement    : false,
  HTMLDirectoryElement : false,
  HTMLDivElement       : false,
  HTMLDListElement     : false,
  HTMLElement          : false,
  HTMLEmbedElement     : false,
  HTMLFieldSetElement  : false,
  HTMLFontElement      : false,
  HTMLFormElement      : false,
  HTMLFrameElement     : false,
  HTMLFrameSetElement  : false,
  HTMLHeadElement      : false,
  HTMLHeadingElement   : false,
  HTMLHRElement        : false,
  HTMLHtmlElement      : false,
  HTMLIFrameElement    : false,
  HTMLImageElement     : false,
  HTMLInputElement     : false,
/* HTMLIsIndexElement was removed from the WHATWG HTML spec;
   see https://github.com/whatwg/html/pull/1095.
   HTMLIsIndexElement has been removed from browsers; see:
   • Chromium Removal: https://codereview.chromium.org/96653004/
   • Gecko Removal: https://bugzilla.mozilla.org/show_bug.cgi?id=1266495
   • WebKit Removal: https://bugs.webkit.org/show_bug.cgi?id=7139.
   See also the discussion at https://github.com/jshint/jshint/pull/3222. */
  HTMLIsIndexElement   : false,
  HTMLLabelElement     : false,
  HTMLLayerElement     : false,
  HTMLLegendElement    : false,
  HTMLLIElement        : false,
  HTMLLinkElement      : false,
  HTMLMapElement       : false,
  HTMLMarqueeElement   : false,
  HTMLMediaElement     : false,
  HTMLMenuElement      : false,
  HTMLMetaElement      : false,
  HTMLMeterElement     : false,
  HTMLModElement       : false,
  HTMLObjectElement    : false,
  HTMLOListElement     : false,
  HTMLOptGroupElement  : false,
  HTMLOptionElement    : false,
  HTMLParagraphElement : false,
  HTMLParamElement     : false,
  HTMLPictureElement   : false,
  HTMLPreElement       : false,
  HTMLProgressElement  : false,
  HTMLQuoteElement     : false,
  HTMLScriptElement    : false,
  HTMLSelectElement    : false,
  HTMLSlotElement      : false,
  HTMLSourceElement    : false,
  HTMLStyleElement     : false,
  HTMLTableCaptionElement: false,
  HTMLTableCellElement : false,
  HTMLTableColElement  : false,
  HTMLTableElement     : false,
  HTMLTableRowElement  : false,
  HTMLTableSectionElement: false,
  HTMLTemplateElement  : false,
  HTMLTextAreaElement  : false,
  HTMLTimeElement      : false,
  HTMLTitleElement     : false,
  HTMLTrackElement     : false,
  HTMLUListElement     : false,
  HTMLVideoElement     : false,
  history              : false,
  Image                : false,
  IntersectionObserver : false,
  Intl                 : false,
  length               : false,
  localStorage         : false,
  location             : false,
  matchMedia           : false,
  MediaList            : false,
  MediaRecorder        : false,
  MessageChannel       : false,
  MessageEvent         : false,
  MessagePort          : false,
  MouseEvent           : false,
  moveBy               : false,
  moveTo               : false,
  MutationObserver     : false,
  name                 : false,
  Node                 : false,
  NodeFilter           : false,
  NodeList             : false,
  Notification         : false,
  navigator            : false,
  onbeforeunload       : true,
  onblur               : true,
  onerror              : true,
  onfocus              : true,
  onload               : true,
  onresize             : true,
  onunload             : true,
  open                 : false,
  openDatabase         : false,
  opener               : false,
  Option               : false,
  origin               : false, // WindowOrWorkerGlobalScope
  parent               : false,
  performance          : false,
  print                : false,
  queueMicrotask       : false, // WindowOrWorkerGlobalScope
  Range                : false,
  requestAnimationFrame : false,
  removeEventListener  : false, // EventTarget
  Request              : false,
  resizeBy             : false,
  resizeTo             : false,
  Response             : false,
  screen               : false,
  scroll               : false,
  scrollBy             : false,
  scrollTo             : false,
  sessionStorage       : false,
  setInterval          : false, // WindowOrWorkerGlobalScope
  setTimeout           : false, // WindowOrWorkerGlobalScope
  SharedWorker         : false,
  status               : false,
  Storage              : false,
  StyleSheet           : false,
  SVGAElement          : false,
  SVGAltGlyphDefElement: false,
  SVGAltGlyphElement   : false,
  SVGAltGlyphItemElement: false,
  SVGAngle             : false,
  SVGAnimateColorElement: false,
  SVGAnimateElement    : false,
  SVGAnimateMotionElement: false,
  SVGAnimateTransformElement: false,
  SVGAnimatedAngle     : false,
  SVGAnimatedBoolean   : false,
  SVGAnimatedEnumeration: false,
  SVGAnimatedInteger   : false,
  SVGAnimatedLength    : false,
  SVGAnimatedLengthList: false,
  SVGAnimatedNumber    : false,
  SVGAnimatedNumberList: false,
  SVGAnimatedPathData  : false,
  SVGAnimatedPoints    : false,
  SVGAnimatedPreserveAspectRatio: false,
  SVGAnimatedRect      : false,
  SVGAnimatedString    : false,
  SVGAnimatedTransformList: false,
  SVGAnimationElement  : false,
  SVGCSSRule           : false,
  SVGCircleElement     : false,
  SVGClipPathElement   : false,
  SVGColor             : false,
  SVGColorProfileElement: false,
  SVGColorProfileRule  : false,
  SVGComponentTransferFunctionElement: false,
  SVGCursorElement     : false,
  SVGDefsElement       : false,
  SVGDescElement       : false,
  SVGDocument          : false,
  SVGElement           : false,
  SVGElementInstance   : false,
  SVGElementInstanceList: false,
  SVGEllipseElement    : false,
  SVGExternalResourcesRequired: false,
  SVGFEBlendElement    : false,
  SVGFEColorMatrixElement: false,
  SVGFEComponentTransferElement: false,
  SVGFECompositeElement: false,
  SVGFEConvolveMatrixElement: false,
  SVGFEDiffuseLightingElement: false,
  SVGFEDisplacementMapElement: false,
  SVGFEDistantLightElement: false,
  SVGFEFloodElement    : false,
  SVGFEFuncAElement    : false,
  SVGFEFuncBElement    : false,
  SVGFEFuncGElement    : false,
  SVGFEFuncRElement    : false,
  SVGFEGaussianBlurElement: false,
  SVGFEImageElement    : false,
  SVGFEMergeElement    : false,
  SVGFEMergeNodeElement: false,
  SVGFEMorphologyElement: false,
  SVGFEOffsetElement   : false,
  SVGFEPointLightElement: false,
  SVGFESpecularLightingElement: false,
  SVGFESpotLightElement: false,
  SVGFETileElement     : false,
  SVGFETurbulenceElement: false,
  SVGFilterElement     : false,
  SVGFilterPrimitiveStandardAttributes: false,
  SVGFitToViewBox      : false,
  SVGFontElement       : false,
  SVGFontFaceElement   : false,
  SVGFontFaceFormatElement: false,
  SVGFontFaceNameElement: false,
  SVGFontFaceSrcElement: false,
  SVGFontFaceUriElement: false,
  SVGForeignObjectElement: false,
  SVGGElement          : false,
  SVGGlyphElement      : false,
  SVGGlyphRefElement   : false,
  SVGGradientElement   : false,
  SVGHKernElement      : false,
  SVGICCColor          : false,
  SVGImageElement      : false,
  SVGLangSpace         : false,
  SVGLength            : false,
  SVGLengthList        : false,
  SVGLineElement       : false,
  SVGLinearGradientElement: false,
  SVGLocatable         : false,
  SVGMPathElement      : false,
  SVGMarkerElement     : false,
  SVGMaskElement       : false,
  SVGMatrix            : false,
  SVGMetadataElement   : false,
  SVGMissingGlyphElement: false,
  SVGNumber            : false,
  SVGNumberList        : false,
  SVGPaint             : false,
  SVGPathElement       : false,
  SVGPathSeg           : false,
  SVGPathSegArcAbs     : false,
  SVGPathSegArcRel     : false,
  SVGPathSegClosePath  : false,
  SVGPathSegCurvetoCubicAbs: false,
  SVGPathSegCurvetoCubicRel: false,
  SVGPathSegCurvetoCubicSmoothAbs: false,
  SVGPathSegCurvetoCubicSmoothRel: false,
  SVGPathSegCurvetoQuadraticAbs: false,
  SVGPathSegCurvetoQuadraticRel: false,
  SVGPathSegCurvetoQuadraticSmoothAbs: false,
  SVGPathSegCurvetoQuadraticSmoothRel: false,
  SVGPathSegLinetoAbs  : false,
  SVGPathSegLinetoHorizontalAbs: false,
  SVGPathSegLinetoHorizontalRel: false,
  SVGPathSegLinetoRel  : false,
  SVGPathSegLinetoVerticalAbs: false,
  SVGPathSegLinetoVerticalRel: false,
  SVGPathSegList       : false,
  SVGPathSegMovetoAbs  : false,
  SVGPathSegMovetoRel  : false,
  SVGPatternElement    : false,
  SVGPoint             : false,
  SVGPointList         : false,
  SVGPolygonElement    : false,
  SVGPolylineElement   : false,
  SVGPreserveAspectRatio: false,
  SVGRadialGradientElement: false,
  SVGRect              : false,
  SVGRectElement       : false,
  SVGRenderingIntent   : false,
  SVGSVGElement        : false,
  SVGScriptElement     : false,
  SVGSetElement        : false,
  SVGStopElement       : false,
  SVGStringList        : false,
  SVGStylable          : false,
  SVGStyleElement      : false,
  SVGSwitchElement     : false,
  SVGSymbolElement     : false,
  SVGTRefElement       : false,
  SVGTSpanElement      : false,
  SVGTests             : false,
  SVGTextContentElement: false,
  SVGTextElement       : false,
  SVGTextPathElement   : false,
  SVGTextPositioningElement: false,
  SVGTitleElement      : false,
  SVGTransform         : false,
  SVGTransformList     : false,
  SVGTransformable     : false,
  SVGURIReference      : false,
  SVGUnitTypes         : false,
  SVGUseElement        : false,
  SVGVKernElement      : false,
  SVGViewElement       : false,
  SVGViewSpec          : false,
  SVGZoomAndPan        : false,
  Text                 : false,
  TextDecoder          : false,
  TextEncoder          : false,
  TimeEvent            : false,
  top                  : false,
  URL                  : false,
  URLSearchParams      : false,
  WebGLActiveInfo      : false,
  WebGLBuffer          : false,
  WebGLContextEvent    : false,
  WebGLFramebuffer     : false,
  WebGLProgram         : false,
  WebGLRenderbuffer    : false,
  WebGLRenderingContext: false,
  WebGLShader          : false,
  WebGLShaderPrecisionFormat: false,
  WebGLTexture         : false,
  WebGLUniformLocation : false,
  WebSocket            : false,
  window               : false,
  Window               : false,
  Worker               : false,
  XDomainRequest       : false,
  XMLDocument          : false,
  XMLHttpRequest       : false,
  XMLSerializer        : false,
  XPathEvaluator       : false,
  XPathException       : false,
  XPathExpression      : false,
  XPathNamespace       : false,
  XPathNSResolver      : false,
  XPathResult          : false
};

exports.devel = {
  alert  : false,
  confirm: false,
  console: false,
  Debug  : false,
  opera  : false,
  prompt : false
};

exports.worker = {
  addEventListener    : true, // EventTarget
  atob                : true, // WindowOrWorkerGlobalScope
  btoa                : true, // WindowOrWorkerGlobalScope
  clearInterval       : true, // WindowOrWorkerGlobalScope
  clearTimeout        : true, // WindowOrWorkerGlobalScope
  createImageBitmap   : true, // WindowOrWorkerGlobalScope
  dispatchEvent       : true, // EventTarget
  importScripts       : true,
  onmessage           : true,
  origin              : true, // WindowOrWorkerGlobalScope
  postMessage         : true,
  queueMicrotask      : true, // WindowOrWorkerGlobalScope
  removeEventListener : true, // EventTarget
  self                : true,
  setInterval         : true, // WindowOrWorkerGlobalScope
  setTimeout          : true, // WindowOrWorkerGlobalScope
  FileReaderSync      : true
};

// Widely adopted global names that are not part of ECMAScript standard
exports.nonstandard = {
  escape  : false,
  unescape: false
};

// Globals provided by popular JavaScript environments.

exports.couch = {
  "require" : false,
  respond   : false,
  getRow    : false,
  emit      : false,
  send      : false,
  start     : false,
  sum       : false,
  log       : false,
  exports   : false,
  module    : false,
  provides  : false
};

exports.node = {
  __filename    : false,
  __dirname     : false,
  arguments     : false,
  GLOBAL        : false,
  global        : false,
  module        : false,
  require       : false,
  Intl          : false,

  // These globals are writeable because Node allows the following
  // usage pattern: var Buffer = require("buffer").Buffer;

  Buffer         : true,
  console        : true,
  exports        : true,
  process        : true,
  setTimeout     : true,
  clearTimeout   : true,
  setInterval    : true,
  clearInterval  : true,
  setImmediate   : true, // v0.9.1+
  clearImmediate : true, // v0.9.1+
  URL            : true, // v10.0.0+
  URLSearchParams: true  // v10.0.0+
};

exports.browserify = {
  __filename    : false,
  __dirname     : false,
  global        : false,
  module        : false,
  require       : false,
  Buffer        : true,
  exports       : true,
  process       : true
};

exports.phantom = {
  phantom      : true,
  require      : true,
  WebPage      : true,
  console      : true, // in examples, but undocumented
  exports      : true  // v1.7+
};

exports.qunit = {
  asyncTest      : false,
  deepEqual      : false,
  equal          : false,
  expect         : false,
  module         : false,
  notDeepEqual   : false,
  notEqual       : false,
  notOk          : false,
  notPropEqual   : false,
  notStrictEqual : false,
  ok             : false,
  propEqual      : false,
  QUnit          : false,
  raises         : false,
  start          : false,
  stop           : false,
  strictEqual    : false,
  test           : false,
  "throws"       : false
};

exports.rhino = {
  arguments    : false,
  defineClass  : false,
  deserialize  : false,
  gc           : false,
  help         : false,
  importClass  : false,
  importPackage: false,
  "java"       : false,
  load         : false,
  loadClass    : false,
  Packages     : false,
  print        : false,
  quit         : false,
  readFile     : false,
  readUrl      : false,
  runCommand   : false,
  seal         : false,
  serialize    : false,
  spawn        : false,
  sync         : false,
  toint32      : false,
  version      : false
};

exports.shelljs = {
  target       : false,
  echo         : false,
  exit         : false,
  cd           : false,
  pwd          : false,
  ls           : false,
  find         : false,
  cp           : false,
  rm           : false,
  mv           : false,
  mkdir        : false,
  test         : false,
  cat          : false,
  sed          : false,
  grep         : false,
  which        : false,
  dirs         : false,
  pushd        : false,
  popd         : false,
  env          : false,
  exec         : false,
  chmod        : false,
  config       : false,
  error        : false,
  tempdir      : false
};

exports.typed = {
  ArrayBuffer         : false,
  ArrayBufferView     : false,
  DataView            : false,
  Float32Array        : false,
  Float64Array        : false,
  Int16Array          : false,
  Int32Array          : false,
  Int8Array           : false,
  Uint16Array         : false,
  Uint32Array         : false,
  Uint8Array          : false,
  Uint8ClampedArray   : false
};

exports.wsh = {
  ActiveXObject            : true,
  Enumerator               : true,
  GetObject                : true,
  ScriptEngine             : true,
  ScriptEngineBuildVersion : true,
  ScriptEngineMajorVersion : true,
  ScriptEngineMinorVersion : true,
  VBArray                  : true,
  WSH                      : true,
  WScript                  : true,
  XDomainRequest           : true
};

// Globals provided by popular JavaScript libraries.

exports.dojo = {
  dojo     : false,
  dijit    : false,
  dojox    : false,
  define   : false,
  "require": false
};

exports.jquery = {
  "$"    : false,
  jQuery : false
};

exports.mootools = {
  "$"           : false,
  "$$"          : false,
  Asset         : false,
  Browser       : false,
  Chain         : false,
  Class         : false,
  Color         : false,
  Cookie        : false,
  Core          : false,
  Document      : false,
  DomReady      : false,
  DOMEvent      : false,
  DOMReady      : false,
  Drag          : false,
  Element       : false,
  Elements      : false,
  Event         : false,
  Events        : false,
  Fx            : false,
  Group         : false,
  Hash          : false,
  HtmlTable     : false,
  IFrame        : false,
  IframeShim    : false,
  InputValidator: false,
  instanceOf    : false,
  Keyboard      : false,
  Locale        : false,
  Mask          : false,
  MooTools      : false,
  Native        : false,
  Options       : false,
  OverText      : false,
  Request       : false,
  Scroller      : false,
  Slick         : false,
  Slider        : false,
  Sortables     : false,
  Spinner       : false,
  Swiff         : false,
  Tips          : false,
  Type          : false,
  typeOf        : false,
  URI           : false,
  Window        : false
};

exports.prototypejs = {
  "$"               : false,
  "$$"              : false,
  "$A"              : false,
  "$F"              : false,
  "$H"              : false,
  "$R"              : false,
  "$break"          : false,
  "$continue"       : false,
  "$w"              : false,
  Abstract          : false,
  Ajax              : false,
  Class             : false,
  Enumerable        : false,
  Element           : false,
  Event             : false,
  Field             : false,
  Form              : false,
  Hash              : false,
  Insertion         : false,
  ObjectRange       : false,
  PeriodicalExecuter: false,
  Position          : false,
  Prototype         : false,
  Selector          : false,
  Template          : false,
  Toggle            : false,
  Try               : false,
  Autocompleter     : false,
  Builder           : false,
  Control           : false,
  Draggable         : false,
  Draggables        : false,
  Droppables        : false,
  Effect            : false,
  Sortable          : false,
  SortableObserver  : false,
  Sound             : false,
  Scriptaculous     : false
};

exports.yui = {
  YUI       : false,
  Y         : false,
  YUI_config: false
};

exports.mocha = {
  // Global (for config etc.)
  mocha       : false,
  // BDD
  describe    : false,
  xdescribe   : false,
  context     : false,
  xcontext    : false,
  it          : false,
  xit         : false,
  specify     : false,
  xspecify    : false,
  before      : false,
  after       : false,
  beforeEach  : false,
  afterEach   : false,
  // TDD
  suite         : false,
  test          : false,
  setup         : false,
  teardown      : false,
  suiteSetup    : false,
  suiteTeardown : false
};

exports.jasmine = {
  jasmine     : false,
  describe    : false,
  xdescribe   : false,
  it          : false,
  xit         : false,
  beforeEach  : false,
  afterEach   : false,
  setFixtures : false,
  loadFixtures: false,
  spyOn       : false,
  expect      : false,
  // Jasmine 1.3
  runs        : false,
  waitsFor    : false,
  waits       : false,
  // Jasmine 2.1
  beforeAll   : false,
  afterAll    : false,
  fail        : false,
  fdescribe   : false,
  fit         : false,
  pending     : false,
  // Jasmine 2.6
  spyOnProperty: false
};

},{}],"jshint":[function(require,module,exports){
/*!
 * JSHint, by JSHint Community.
 *
 * Licensed under the MIT license.
 *
 * JSHint is a derivative work of JSLint:
 *
 *   Copyright (c) 2002 Douglas Crockford  (www.JSLint.com)
 *
 *   Permission is hereby granted, free of charge, to any person obtaining
 *   a copy of this software and associated documentation files (the "Software"),
 *   to deal in the Software without restriction, including without limitation
 *   the rights to use, copy, modify, merge, publish, distribute, sublicense,
 *   and/or sell copies of the Software, and to permit persons to whom
 *   the Software is furnished to do so, subject to the following conditions:
 *
 *   The above copyright notice and this permission notice shall be included
 *   in all copies or substantial portions of the Software.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 *   DEALINGS IN THE SOFTWARE.
 *
 */

/*jshint quotmark:double */
/*exported console */

var _            = require("lodash");
var events       = require("events");
var vars         = require("./vars.js");
var messages     = require("./messages.js");
var Lexer        = require("./lex.js").Lexer;
var reg          = require("./reg.js");
var state        = require("./state.js").state;
var style        = require("./style.js");
var options      = require("./options.js");
var scopeManager = require("./scope-manager.js");
var prodParams   = require("./prod-params.js");

// We need this module here because environments such as IE and Rhino
// don't necessarilly expose the 'console' API and browserify uses
// it to log things. It's a sad state of affair, really.
var console = require("console-browserify");

// We build the application inside a function so that we produce only a singleton
// variable. That function will be invoked immediately, and its return value is
// the JSHINT function itself.

var JSHINT = (function() {
  "use strict";

  var api, // Extension API

    // These are operators that should not be used with the ! operator.
    bang = {
      "<"  : true,
      "<=" : true,
      "==" : true,
      "===": true,
      "!==": true,
      "!=" : true,
      ">"  : true,
      ">=" : true,
      "+"  : true,
      "-"  : true,
      "*"  : true,
      "/"  : true,
      "%"  : true
    },

    declared, // Globals that were declared using /*global ... */ syntax.

    functions, // All of the functions

    inblock,
    indent,
    lookahead,
    lex,
    member,
    membersOnly,
    predefined,    // Global variables defined by option

    extraModules = [],
    emitter = new events.EventEmitter();

  function checkOption(name, isStable, t) {
    var type, validNames;

    if (isStable) {
      type = "";
      validNames = options.validNames;
    } else {
      type = "unstable ";
      validNames = options.unstableNames;
    }

    name = name.trim();

    if (/^[+-]W\d{3}$/g.test(name)) {
      return true;
    }

    if (validNames.indexOf(name) === -1) {
      if (t.type !== "jslint" && !_.has(options.removed, name)) {
        error("E001", t, type, name);
        return false;
      }
    }

    return true;
  }

  function isString(obj) {
    return Object.prototype.toString.call(obj) === "[object String]";
  }

  function isIdentifier(tkn, value) {
    if (!tkn)
      return false;

    if (!tkn.identifier || tkn.value !== value)
      return false;

    return true;
  }

  /**
   * ES3 defined a set of "FutureReservedWords" in order "to allow for the
   * possibility of future adoption of [proposed] extensions."
   *
   * ES5 reduced the set of FutureReservedWords, in some cases by using them to
   * define new syntactic forms (e.g. `class` and `const`) and in other cases
   * by simply allowing their use as Identifiers (e.g. `int` and `goto`).
   * Separately, ES5 introduced new restrictions on certain tokens, but limited
   * the restriction to strict mode code (e.g. `let` and `yield`).
   *
   * This function determines if a given token describes a reserved word
   * according to the current state of the parser.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   * @param {Token} token
   */
  function isReserved(context, token) {
    if (!token.reserved) {
      return false;
    }
    var meta = token.meta;

    if (meta && meta.isFutureReservedWord) {
      if (state.inES5()) {
        // ES3 FutureReservedWord in an ES5 environment.
        if (!meta.es5) {
          return false;
        }

        if (token.isProperty) {
          return false;
        }
      }
    } else if (meta && meta.es5 && !state.inES5()) {
      return false;
    }

    // Some identifiers are reserved only within a strict mode environment.
    if (meta && meta.strictOnly && state.inES5()) {
      if (!state.option.strict && !state.isStrict()) {
        return false;
      }
    }

    if (token.id === "await" && (!(context & prodParams.async) && !state.option.module)) {
      return false;
    }

    if (token.id === "yield" && (!(context & prodParams.yield))) {
      return state.isStrict();
    }

    return true;
  }

  function supplant(str, data) {
    return str.replace(/\{([^{}]*)\}/g, function(a, b) {
      var r = data[b];
      return typeof r === "string" || typeof r === "number" ? r : a;
    });
  }

  function combine(dest, src) {
    Object.keys(src).forEach(function(name) {
      if (_.has(JSHINT.blacklist, name)) return;
      dest[name] = src[name];
    });
  }

  function processenforceall() {
    if (state.option.enforceall) {
      for (var enforceopt in options.bool.enforcing) {
        if (state.option[enforceopt] === undefined &&
            !options.noenforceall[enforceopt]) {
          state.option[enforceopt] = true;
        }
      }
      for (var relaxopt in options.bool.relaxing) {
        if (state.option[relaxopt] === undefined) {
          state.option[relaxopt] = false;
        }
      }
    }
  }

  /**
   * Apply all linting options according to the status of the `state` object.
   */
  function applyOptions() {
    var badESOpt = null;
    processenforceall();

    /**
     * TODO: Remove in JSHint 3
     */
    badESOpt = state.inferEsVersion();
    if (badESOpt) {
      quit("E059", state.tokens.next, "esversion", badESOpt);
    }

    if (state.inES5()) {
      combine(predefined, vars.ecmaIdentifiers[5]);
    }

    if (state.inES6()) {
      combine(predefined, vars.ecmaIdentifiers[6]);
    }

    if (state.inES8()) {
      combine(predefined, vars.ecmaIdentifiers[8]);
    }

    if (state.inES11()) {
      combine(predefined, vars.ecmaIdentifiers[11]);
    }

    /**
     * Use `in` to check for the presence of any explicitly-specified value for
     * `globalstrict` because both `true` and `false` should trigger an error.
     */
    if (state.option.strict === "global" && "globalstrict" in state.option) {
      quit("E059", state.tokens.next, "strict", "globalstrict");
    }

    if (state.option.module) {
      /**
       * TODO: Extend this restriction to *all* ES6-specific options.
       */
      if (!state.inES6()) {
        warning("W134", state.tokens.next, "module", 6);
      }
    }

    if (state.option.regexpu) {
      /**
       * TODO: Extend this restriction to *all* ES6-specific options.
       */
      if (!state.inES6()) {
        warning("W134", state.tokens.next, "regexpu", 6);
      }
    }

    if (state.option.couch) {
      combine(predefined, vars.couch);
    }

    if (state.option.qunit) {
      combine(predefined, vars.qunit);
    }

    if (state.option.rhino) {
      combine(predefined, vars.rhino);
    }

    if (state.option.shelljs) {
      combine(predefined, vars.shelljs);
      combine(predefined, vars.node);
    }
    if (state.option.typed) {
      combine(predefined, vars.typed);
    }

    if (state.option.phantom) {
      combine(predefined, vars.phantom);
    }

    if (state.option.prototypejs) {
      combine(predefined, vars.prototypejs);
    }

    if (state.option.node) {
      combine(predefined, vars.node);
      combine(predefined, vars.typed);
    }

    if (state.option.devel) {
      combine(predefined, vars.devel);
    }

    if (state.option.dojo) {
      combine(predefined, vars.dojo);
    }

    if (state.option.browser) {
      combine(predefined, vars.browser);
      combine(predefined, vars.typed);
    }

    if (state.option.browserify) {
      combine(predefined, vars.browser);
      combine(predefined, vars.typed);
      combine(predefined, vars.browserify);
    }

    if (state.option.nonstandard) {
      combine(predefined, vars.nonstandard);
    }

    if (state.option.jasmine) {
      combine(predefined, vars.jasmine);
    }

    if (state.option.jquery) {
      combine(predefined, vars.jquery);
    }

    if (state.option.mootools) {
      combine(predefined, vars.mootools);
    }

    if (state.option.worker) {
      combine(predefined, vars.worker);
    }

    if (state.option.wsh) {
      combine(predefined, vars.wsh);
    }

    if (state.option.yui) {
      combine(predefined, vars.yui);
    }

    if (state.option.mocha) {
      combine(predefined, vars.mocha);
    }
  }

  // Produce an error warning.
  function quit(code, token, a, b) {
    var percentage = Math.floor((token.line / state.lines.length) * 100);
    var message = messages.errors[code].desc;

    var exception = {
      name: "JSHintError",
      line: token.line,
      character: token.from,
      message: message + " (" + percentage + "% scanned).",
      raw: message,
      code: code,
      a: a,
      b: b
    };

    exception.reason = supplant(message, exception) + " (" + percentage +
      "% scanned).";

    throw exception;
  }

  function removeIgnoredMessages() {
    var ignored = state.ignoredLines;

    if (_.isEmpty(ignored)) return;
    JSHINT.errors = _.reject(JSHINT.errors, function(err) { return ignored[err.line] });
  }

  function warning(code, t, a, b, c, d) {
    var ch, l, w, msg;

    if (/^W\d{3}$/.test(code)) {
      if (state.ignored[code])
        return;

      msg = messages.warnings[code];
    } else if (/E\d{3}/.test(code)) {
      msg = messages.errors[code];
    } else if (/I\d{3}/.test(code)) {
      msg = messages.info[code];
    }

    t = t || state.tokens.next || {};
    if (t.id === "(end)") {  // `~
      t = state.tokens.curr;
    }

    l = t.line;
    ch = t.from;

    w = {
      id: "(error)",
      raw: msg.desc,
      code: msg.code,
      evidence: state.lines[l - 1] || "",
      line: l,
      character: ch,
      scope: JSHINT.scope,
      a: a,
      b: b,
      c: c,
      d: d
    };

    w.reason = supplant(msg.desc, w);
    JSHINT.errors.push(w);

    removeIgnoredMessages();

    var errors = JSHINT.errors.filter(function(e) { return /E\d{3}/.test(e.code); });
    if (errors.length >= state.option.maxerr) {
      quit("E043", t);
    }
    return w;
  }

  function warningAt(m, l, ch, a, b, c, d) {
    return warning(m, {
      line: l,
      from: ch
    }, a, b, c, d);
  }

  function error(m, t, a, b, c, d) {
    warning(m, t, a, b, c, d);
  }

  function errorAt(m, l, ch, a, b, c, d) {
    return error(m, {
      line: l,
      from: ch
    }, a, b, c, d);
  }

  // Tracking of "internal" scripts, like eval containing a static string
  function addEvalCode(elem, token) {
    JSHINT.internals.push({
      id: "(internal)",
      elem: elem,
      token: token,
      code: token.value.replace(/([^\\])(\\*)\2\\n/g, "$1\n")
    });
  }

  /**
   * Process an inline linting directive
   *
   * @param {Token} directiveToken - the directive-bearing comment token
   * @param {Token} previous - the token that preceeds the directive
   */
  function lintingDirective(directiveToken, previous) {
    var body = directiveToken.body.split(",")
      .map(function(s) { return s.trim(); });
    var predef = {};

    if (directiveToken.type === "falls through") {
      previous.caseFallsThrough = true;
      return;
    }

    if (directiveToken.type === "globals") {
      body.forEach(function(item, idx) {
        var parts = item.split(":");
        var key = parts[0].trim();

        if (key === "-" || !key.length) {
          // Ignore trailing comma
          if (idx > 0 && idx === body.length - 1) {
            return;
          }
          error("E002", directiveToken);
          return;
        }

        if (key.charAt(0) === "-") {
          key = key.slice(1);

          JSHINT.blacklist[key] = key;
          delete predefined[key];
        } else {
          predef[key] = parts.length > 1 && parts[1].trim() === "true";
        }
      });

      combine(predefined, predef);

      for (var key in predef) {
        if (_.has(predef, key)) {
          declared[key] = directiveToken;
        }
      }
    }

    if (directiveToken.type === "exported") {
      body.forEach(function(e, idx) {
        if (!e.length) {
          // Ignore trailing comma
          if (idx > 0 && idx === body.length - 1) {
            return;
          }
          error("E002", directiveToken);
          return;
        }

        state.funct["(scope)"].addExported(e);
      });
    }

    if (directiveToken.type === "members") {
      membersOnly = membersOnly || {};

      body.forEach(function(m) {
        var ch1 = m.charAt(0);
        var ch2 = m.charAt(m.length - 1);

        if (ch1 === ch2 && (ch1 === "\"" || ch1 === "'")) {
          m = m
            .substr(1, m.length - 2)
            .replace("\\\"", "\"");
        }

        membersOnly[m] = false;
      });
    }

    var numvals = [
      "maxstatements",
      "maxparams",
      "maxdepth",
      "maxcomplexity",
      "maxerr",
      "maxlen",
      "indent"
    ];

    if (directiveToken.type === "jshint" || directiveToken.type === "jslint" ||
      directiveToken.type === "jshint.unstable") {
      body.forEach(function(item) {
        var parts = item.split(":");
        var key = parts[0].trim();
        var val = parts.length > 1 ? parts[1].trim() : "";
        var numberVal;

        if (!checkOption(key, directiveToken.type !== "jshint.unstable", directiveToken)) {
          return;
        }

        if (numvals.indexOf(key) >= 0) {
          // GH988 - numeric options can be disabled by setting them to `false`
          if (val !== "false") {
            numberVal = +val;

            if (typeof numberVal !== "number" || !isFinite(numberVal) ||
              numberVal <= 0 || Math.floor(numberVal) !== numberVal) {
              error("E032", directiveToken, val);
              return;
            }

            state.option[key] = numberVal;
          } else {
            state.option[key] = key === "indent" ? 4 : false;
          }

          return;
        }

        if (key === "validthis") {
          // `validthis` is valid only within a function scope.

          if (state.funct["(global)"])
            return void error("E009");

          if (val !== "true" && val !== "false")
            return void error("E002", directiveToken);

          state.option.validthis = (val === "true");
          return;
        }

        if (key === "quotmark") {
          switch (val) {
          case "true":
          case "false":
            state.option.quotmark = (val === "true");
            break;
          case "double":
          case "single":
            state.option.quotmark = val;
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "shadow") {
          switch (val) {
          case "true":
            state.option.shadow = true;
            break;
          case "outer":
            state.option.shadow = "outer";
            break;
          case "false":
          case "inner":
            state.option.shadow = "inner";
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "unused") {
          switch (val) {
          case "true":
            state.option.unused = true;
            break;
          case "false":
            state.option.unused = false;
            break;
          case "vars":
          case "strict":
            state.option.unused = val;
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "latedef") {
          switch (val) {
          case "true":
            state.option.latedef = true;
            break;
          case "false":
            state.option.latedef = false;
            break;
          case "nofunc":
            state.option.latedef = "nofunc";
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "ignore") {
          switch (val) {
          case "line":
            state.ignoredLines[directiveToken.line] = true;
            removeIgnoredMessages();
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "strict") {
          switch (val) {
          case "true":
            state.option.strict = true;
            break;
          case "false":
            state.option.strict = false;
            break;
          case "global":
          case "implied":
            state.option.strict = val;
            break;
          default:
            error("E002", directiveToken);
          }
          return;
        }

        if (key === "module") {
          /**
           * TODO: Extend this restriction to *all* "environmental" options.
           */
          if (!hasParsedCode(state.funct)) {
            error("E055", directiveToken, "module");
          }
        }

        if (key === "esversion") {
          switch (val) {
          case "3":
          case "5":
          case "6":
          case "7":
          case "8":
          case "9":
          case "10":
          case "11":
            state.option.moz = false;
            state.option.esversion = +val;
            break;
          case "2015":
          case "2016":
          case "2017":
          case "2018":
          case "2019":
          case "2020":
            state.option.moz = false;
            // Translate specification publication year to version number.
            state.option.esversion = +val - 2009;
            break;
          default:
            error("E002", directiveToken);
          }
          if (!hasParsedCode(state.funct)) {
            error("E055", directiveToken, "esversion");
          }
          return;
        }

        var match = /^([+-])(W\d{3})$/g.exec(key);
        if (match) {
          // ignore for -W..., unignore for +W...
          state.ignored[match[2]] = (match[1] === "-");
          return;
        }

        var tn;
        if (val === "true" || val === "false") {
          if (directiveToken.type === "jslint") {
            tn = options.renamed[key] || key;
            state.option[tn] = (val === "true");

            if (options.inverted[tn] !== undefined) {
              state.option[tn] = !state.option[tn];
            }
          } else if (directiveToken.type === "jshint.unstable") {
            /* istanbul ignore next */
            state.option.unstable[key] = (val === "true");
          } else {
            state.option[key] = (val === "true");
          }

          return;
        }

        error("E002", directiveToken);
      });

      applyOptions();
    }
  }

  /**
   * Return a token beyond the token available in `state.tokens.next`. If no
   * such token exists, return the "(end)" token. This function is used to
   * determine parsing strategies in cases where the value of the next token
   * does not provide sufficient information, as is the case with `for` loops,
   * e.g.:
   *
   *     for ( var i in ...
   *
   * versus:
   *
   *     for ( var i = ...
   *
   * @param {number} [p] - offset of desired token; defaults to 0
   *
   * @returns {token}
   */
  function peek(p) {
    var i = p || 0, j = lookahead.length, t;

    if (i < j) {
      return lookahead[i];
    }

    while (j <= i) {
      t = lex.token();

      // When the lexer is exhausted, this function should produce the "(end)"
      // token, even in cases where the requested token is beyond the end of
      // the input stream.
      if (!t) {
        // If the lookahead buffer is empty, the expected "(end)" token was
        // already emitted by the most recent invocation of `advance` and is
        // available as the next token.
        if (!lookahead.length) {
          return state.tokens.next;
        }

        return lookahead[j - 1];
      }

      lookahead[j] = t;
      j += 1;
    }

    return t;
  }

  function peekIgnoreEOL() {
    var i = 0;
    var t;
    do {
      t = peek(i++);
    } while (t.id === "(endline)");
    return t;
  }

  /**
   * Consume the next token.
   *
   * @param {string} [expected] - the expected value of the next token's `id`
   *                              property (in the case of punctuators) or
   *                              `value` property (in the case of identifiers
   *                              and literals); if unspecified, any token will
   *                              be accepted
   * @param {object} [relatedToken] - the token that informed the expected
   *                                  value, if any (for example: the opening
   *                                  brace when a closing brace is expected);
   *                                  used to produce more meaningful errors
   */
  function advance(expected, relatedToken) {
    var nextToken = state.tokens.next;

    if (expected && nextToken.id !== expected) {
      if (relatedToken) {
        if (nextToken.id === "(end)") {
          error("E019", relatedToken, relatedToken.id);
        } else {
          error("E020", nextToken, expected, relatedToken.id,
            relatedToken.line, nextToken.value);
        }
      } else if (nextToken.type !== "(identifier)" || nextToken.value !== expected) {
        error("E021", nextToken, expected, nextToken.value);
      }
    }

    state.tokens.prev = state.tokens.curr;
    state.tokens.curr = state.tokens.next;
    for (;;) {
      state.tokens.next = lookahead.shift() || lex.token();

      if (!state.tokens.next) { // No more tokens left, give up
        quit("E041", state.tokens.curr);
      }

      if (state.tokens.next.id === "(end)" || state.tokens.next.id === "(error)") {
        return;
      }

      if (state.tokens.next.check) {
        state.tokens.next.check();
      }

      if (state.tokens.next.isSpecial) {
        lintingDirective(state.tokens.next, state.tokens.curr);
      } else {
        if (state.tokens.next.id !== "(endline)") {
          break;
        }
      }
    }
  }

  /**
   * Determine whether a given token is an operator.
   *
   * @param {token} token
   *
   * @returns {boolean}
   */
  function isOperator(token) {
    return token.first || token.right || token.left || token.id === "yield" || token.id === "await";
  }

  function isEndOfExpr(context, curr, next) {
    if (arguments.length <= 1) {
      curr = state.tokens.curr;
      next = state.tokens.next;
    }

    if (next.id === "in" && context & prodParams.noin) {
      return true;
    }

    if (next.id === ";" || next.id === "}" || next.id === ":") {
      return true;
    }

    if (next.infix === curr.infix ||
      // Infix operators which follow `yield` should only be consumed as part
      // of the current expression if allowed by the syntactic grammar. In
      // effect, this prevents automatic semicolon insertion when `yield` is
      // followed by a newline and a comma operator (without enabling it when
      // `yield` is followed by a newline and a `[` token).
      (curr.id === "yield" && curr.rbp < next.rbp)) {
      return !sameLine(curr, next);
    }

    return false;
  }

  /**
   * The `expression` function is the heart of JSHint's parsing behaior. It is
   * based on the Pratt parser, but it extends that model with a `fud` method.
   * Short for "first null denotation," it it similar to the `nud` ("null
   * denotation") function, but it is only used on the first token of a
   * statement. This simplifies usage in statement-oriented languages like
   * JavaScript.
   *
   * .nud  Null denotation
   * .fud  First null denotation
   * .led  Left denotation
   *  lbp  Left binding power
   *  rbp  Right binding power
   *
   * They are elements of the parsing method called Top Down Operator Precedence.
   *
   * In addition to parsing, this function applies a number of linting patterns.
   *
   * @param {number} context - the parsing context (a bitfield describing
   *                           conditions of the current parsing operation
   *                           which can influence how the next tokens are
   *                           interpreted); see `prod-params.js` for more
   *                           detail)
   * @param {number} rbp - the right-binding power of the token to be consumed
   */
  function expression(context, rbp) {
    var left, isArray = false, isObject = false;
    var initial = context & prodParams.initial;
    var curr;

    context &= ~prodParams.initial;

    state.nameStack.push();

    if (state.tokens.next.id === "(end)")
      error("E006", state.tokens.curr);

    advance();

    if (initial) {
      state.funct["(verb)"] = state.tokens.curr.value;
      state.tokens.curr.beginsStmt = true;
    }

    curr = state.tokens.curr;

    if (initial && curr.fud && (!curr.useFud || curr.useFud(context))) {
      left = state.tokens.curr.fud(context);
    } else {
      if (state.tokens.curr.nud) {
        left = state.tokens.curr.nud(context, rbp);
      } else {
        error("E030", state.tokens.curr, state.tokens.curr.id);
      }

      while (rbp < state.tokens.next.lbp && !isEndOfExpr(context)) {
        isArray = state.tokens.curr.value === "Array";
        isObject = state.tokens.curr.value === "Object";

        // #527, new Foo.Array(), Foo.Array(), new Foo.Object(), Foo.Object()
        // Line breaks in IfStatement heads exist to satisfy the checkJSHint
        // "Line too long." error.
        if (left && (left.value || (left.first && left.first.value))) {
          // If the left.value is not "new", or the left.first.value is a "."
          // then safely assume that this is not "new Array()" and possibly
          // not "new Object()"...
          if (left.value !== "new" ||
            (left.first && left.first.value && left.first.value === ".")) {
            isArray = false;
            // ...In the case of Object, if the left.value and state.tokens.curr.value
            // are not equal, then safely assume that this not "new Object()"
            if (left.value !== state.tokens.curr.value) {
              isObject = false;
            }
          }
        }

        advance();

        if (isArray && state.tokens.curr.id === "(" && state.tokens.next.id === ")") {
          warning("W009", state.tokens.curr);
        }

        if (isObject && state.tokens.curr.id === "(" && state.tokens.next.id === ")") {
          warning("W010", state.tokens.curr);
        }

        if (left && state.tokens.curr.led) {
          left = state.tokens.curr.led(context, left);
        } else {
          error("E033", state.tokens.curr, state.tokens.curr.id);
        }
      }
    }

    state.nameStack.pop();

    return left;
  }


  // Functions for conformance of style.

  function sameLine(first, second) {
    return first.line === (second.startLine || second.line);
  }

  function nobreaknonadjacent(left, right) {
    if (!state.option.laxbreak && !sameLine(left, right)) {
      warning("W014", right, right.value);
    }
  }

  function nolinebreak(t) {
    if (!sameLine(t, state.tokens.next)) {
      warning("E022", t, t.value);
    }
  }

  /**
   * Validate the comma token in the "current" position of the token stream.
   *
   * @param {object} [opts]
   * @param {boolean} [opts.property] - flag indicating whether the current
   *                                    comma token is situated directly within
   *                                    an object initializer
   * @param {boolean} [opts.allowTrailing] - flag indicating whether the
   *                                         current comma token may appear
   *                                         directly before a delimiter
   *
   * @returns {boolean} flag indicating the validity of the current comma
   *                    token; `false` if the token directly causes a syntax
   *                    error, `true` otherwise
   */
  function checkComma(opts) {
    var prev = state.tokens.prev;
    var curr = state.tokens.curr;
    opts = opts || {};

    if (!sameLine(prev, curr)) {
      if (!state.option.laxcomma) {
        if (checkComma.first) {
          warning("I001", curr);
          checkComma.first = false;
        }
        warning("W014", prev, curr.value);
      }
    }

    if (state.tokens.next.identifier && !(opts.property && state.inES5())) {
      // Keywords that cannot follow a comma operator.
      switch (state.tokens.next.value) {
      case "break":
      case "case":
      case "catch":
      case "continue":
      case "default":
      case "do":
      case "else":
      case "finally":
      case "for":
      case "if":
      case "in":
      case "instanceof":
      case "return":
      case "switch":
      case "throw":
      case "try":
      case "var":
      case "let":
      case "while":
      case "with":
        error("E024", state.tokens.next, state.tokens.next.value);
        return false;
      }
    }

    if (state.tokens.next.type === "(punctuator)") {
      switch (state.tokens.next.value) {
      case "}":
      case "]":
      case ",":
      case ")":
        if (opts.allowTrailing) {
          return true;
        }

        error("E024", state.tokens.next, state.tokens.next.value);
        return false;
      }
    }
    return true;
  }

  /**
   * Factory function for creating "symbols"--objects that will be inherited by
   * tokens. The objects created by this function are stored in a symbol table
   * and set as the prototype of the tokens generated by the lexer.
   *
   * Note that this definition of "symbol" describes an implementation detail
   * of JSHint and is not related to the ECMAScript value type introduced in
   * ES2015.
   *
   * @param {string} s - the name of the token; for keywords (e.g. `void`) and
   *                     delimiters (e.g.. `[`), this is the token's text
   *                     representation; for literals (e.g. numbers) and other
   *                     "special" tokens (e.g. the end-of-file marker) this is
   *                     a parenthetical value
   * @param {number} p - the left-binding power of the token as used by the
   *                     Pratt parsing semantics
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function symbol(s, p) {
    var x = state.syntax[s];
    if (!x || typeof x !== "object") {
      state.syntax[s] = x = {
        id: s,
        lbp: p,
        // Symbols that accept a right-hand side do so with a binding power
        // that is commonly identical to their left-binding power. (This value
        // is relevant when determining if the grouping operator is necessary
        // to override the precedence of surrounding operators.) Because the
        // exponentiation operator's left-binding power and right-binding power
        // are distinct, the values must be encoded separately.
        rbp: p,
        value: s
      };
    }
    return x;
  }

  /**
   * Convenience function for defining delimiter symbols.
   *
   * @param {string} s - the name of the symbol
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function delim(s) {
    var x = symbol(s, 0);
    x.delim = true;
    return x;
  }

  /**
   * Convenience function for defining statement-denoting symbols.
   *
   * @param {string} s - the name of the symbol
   * @param {function} f - the first null denotation function for the symbol;
   *                       see the `expression` function for more detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function stmt(s, f) {
    var x = delim(s);
    x.identifier = x.reserved = true;
    x.fud = f;
    return x;
  }

  /**
   * Convenience function for defining block-statement-denoting symbols.
   *
   * A block-statement-denoting symbol is one like 'if' or 'for', which will be
   * followed by a block and will not have to end with a semicolon.
   *
   * @param {string} s - the name of the symbol
   * @param {function} - the first null denotation function for the symbol; see
   *                     the `expression` function for more detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function blockstmt(s, f) {
    var x = stmt(s, f);
    x.block = true;
    return x;
  }
  /**
   * Denote a given JSHint symbol as an identifier and a reserved keyword.
   *
   * @param {object} - a JSHint symbol value
   *
   * @returns {object} - the provided object
   */
  function reserveName(x) {
    var c = x.id.charAt(0);
    if ((c >= "a" && c <= "z") || (c >= "A" && c <= "Z")) {
      x.identifier = x.reserved = true;
    }
    return x;
  }

  /**
   * Convenience function for defining "prefix" symbols--operators that accept
   * expressions as a right-hand side.
   *
   * @param {string} s - the name of the symbol
   * @param {function} [f] - the first null denotation function for the symbol;
   *                         see the `expression` function for more detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function prefix(s, f) {
    var x = symbol(s, 150);
    reserveName(x);

    x.nud = (typeof f === "function") ? f : function(context) {
      this.arity = "unary";
      this.right = expression(context, 150);

      if (this.id === "++" || this.id === "--") {
        if (state.option.plusplus) {
          warning("W016", this, this.id);
        }

        if (this.right) {
          checkLeftSideAssign(context, this.right, this);
        }
      }

      return this;
    };

    return x;
  }

  /**
   * Convenience function for defining "type" symbols--those that describe
   * literal values.
   *
   * @param {string} s - the name of the symbol
   * @param {function} f - the first null denotation function for the symbol;
   *                       see the `expression` function for more detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function type(s, f) {
    var x = symbol(s, 0);
    x.type = s;
    x.nud = f;
    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for reserved
   * keywords--those that are restricted from use as bindings (and as property
   * names in ECMAScript 3 environments).
   *
   * @param {string} s - the name of the symbol
   * @param {function} func - the first null denotation function for the
   *                          symbol; see the `expression` function for more
   *                          detail
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function reserve(name, func) {
    var x = type(name, func);
    x.identifier = true;
    x.reserved = true;
    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for keywords that are
   * only reserved in some circumstances.
   *
   * @param {string} name - the name of the symbol
   * @param {object} [meta] - a collection of optional arguments
   * @param {function} [meta.nud] -the null denotation function for the symbol;
   *                   see the `expression` function for more detail
   * @param {boolean} [meta.es5] - `true` if the identifier is reserved
   *                               in ECMAScript 5 or later
   * @param {boolean} [meta.strictOnly] - `true` if the identifier is only
   *                                      reserved in strict mode code.
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function FutureReservedWord(name, meta) {
    var x = type(name, state.syntax["(identifier)"].nud);

    meta = meta || {};
    meta.isFutureReservedWord = true;

    x.value = name;
    x.identifier = true;
    x.reserved = true;
    x.meta = meta;

    return x;
  }

  /**
   * Convenience function for defining "infix" symbols--operators that require
   * operands as both "land-hand side" and "right-hand side".
   *
   * @param {string} s - the name of the symbol
   * @param {function} [f] - a function to be invoked that consumes the
   *                         right-hand side of the operator
   * @param {number} p - the left-binding power of the token as used by the
   *                     Pratt parsing semantics
   * @param {boolean} [w] - if `true`
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function infix(s, f, p, w) {
    var x = symbol(s, p);
    reserveName(x);
    x.infix = true;
    x.led = function(context, left) {
      if (!w) {
        nobreaknonadjacent(state.tokens.prev, state.tokens.curr);
      }
      if ((s === "in" || s === "instanceof") && left.id === "!") {
        warning("W018", left, "!");
      }
      if (typeof f === "function") {
        return f(context, left, this);
      } else {
        this.left = left;
        this.right = expression(context, p);
        return this;
      }
    };
    return x;
  }

  /**
   * Convenience function for defining the `=>` token as used in arrow
   * functions.
   *
   * @param {string} s - the name of the symbol
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function application(s) {
    var x = symbol(s, 42);

    x.infix = true;
    x.led = function(context, left) {
      nobreaknonadjacent(state.tokens.prev, state.tokens.curr);

      this.left = left;
      this.right = doFunction(context, { type: "arrow", loneArg: left });
      return this;
    };
    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for relation operators.
   *
   * @param {string} s - the name of the symbol
   * @param {function} [f] - a function to be invoked to enforce any additional
   *                         linting rules.
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function relation(s, f) {
    var x = symbol(s, 100);

    x.infix = true;
    x.led = function(context, left) {
      nobreaknonadjacent(state.tokens.prev, state.tokens.curr);
      this.left = left;
      var right = this.right = expression(context, 100);

      if (isIdentifier(left, "NaN") || isIdentifier(right, "NaN")) {
        warning("W019", this);
      } else if (f) {
        f.apply(this, [context, left, right]);
      }

      if (!left || !right) {
        quit("E041", state.tokens.curr);
      }

      if (left.id === "!") {
        warning("W018", left, "!");
      }

      if (right.id === "!") {
        warning("W018", right, "!");
      }

      return this;
    };
    return x;
  }

  /**
   * Determine if a given token marks the beginning of a UnaryExpression.
   *
   * @param {object} token
   *
   * @returns {boolean}
   */
  function beginsUnaryExpression(token) {
    return token.arity === "unary" && token.id !== "++" && token.id !== "--";
  }

  var typeofValues = {};
  typeofValues.legacy = [
    // E4X extended the `typeof` operator to return "xml" for the XML and
    // XMLList types it introduced.
    // Ref: 11.3.2 The typeof Operator
    // http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-357.pdf
    "xml",
    // IE<9 reports "unknown" when the `typeof` operator is applied to an
    // object existing across a COM+ bridge. In lieu of official documentation
    // (which does not exist), see:
    // http://robertnyman.com/2005/12/21/what-is-typeof-unknown/
    "unknown"
  ];
  typeofValues.es3 = [
    "undefined", "boolean", "number", "string", "function", "object",
  ];
  typeofValues.es3 = typeofValues.es3.concat(typeofValues.legacy);
  typeofValues.es6 = typeofValues.es3.concat("symbol", "bigint");

  /**
   * Validate comparisons between the result of a `typeof` expression and a
   * string literal.
   *
   * @param {token} [left] - one of the values being compared
   * @param {token} [right] - the other value being compared
   * @param {object} state - the global state object (see `state.js`)
   *
   * @returns {boolean} - `false` if the second token describes a `typeof`
   *                       expression and the first token is a string literal
   *                       whose value is never returned by that operator;
   *                       `true` otherwise
   */
  function isTypoTypeof(left, right, state) {
    var values;

    if (state.option.notypeof)
      return false;

    if (!left || !right)
      return false;

    values = state.inES6() ? typeofValues.es6 : typeofValues.es3;

    if (right.type === "(identifier)" && right.value === "typeof" && left.type === "(string)") {
      if (left.value === "bigint") {
        if (!state.inES11()) {
          warning("W119", left, "BigInt", "11");
        }

        return false;
      }

      return !_.includes(values, left.value);
    }

    return false;
  }

  /**
   * Determine if a given token describes the built-in `eval` function.
   *
   * @param {token} left
   * @param {object} state - the global state object (see `state.js`)
   *
   * @returns {boolean}
   */
  function isGlobalEval(left, state) {
    var isGlobal = false;

    // permit methods to refer to an "eval" key in their own context
    if (left.type === "this" && state.funct["(context)"] === null) {
      isGlobal = true;
    }
    // permit use of "eval" members of objects
    else if (left.type === "(identifier)") {
      if (state.option.node && left.value === "global") {
        isGlobal = true;
      }

      else if (state.option.browser && (left.value === "window" || left.value === "document")) {
        isGlobal = true;
      }
    }

    return isGlobal;
  }

  /**
   * Determine if a given token describes a property of a built-in object.
   *
   * @param {token} left
   *
   * @returns {boolean}
   */
  function findNativePrototype(left) {
    var natives = [
      "Array", "ArrayBuffer", "Boolean", "Collator", "DataView", "Date",
      "DateTimeFormat", "Error", "EvalError", "Float32Array", "Float64Array",
      "Function", "Infinity", "Intl", "Int16Array", "Int32Array", "Int8Array",
      "Iterator", "Number", "NumberFormat", "Object", "RangeError",
      "ReferenceError", "RegExp", "StopIteration", "String", "SyntaxError",
      "TypeError", "Uint16Array", "Uint32Array", "Uint8Array", "Uint8ClampedArray",
      "URIError"
    ];

    function walkPrototype(obj) {
      if (typeof obj !== "object") return;
      return obj.right === "prototype" ? obj : walkPrototype(obj.left);
    }

    function walkNative(obj) {
      while (!obj.identifier && typeof obj.left === "object")
        obj = obj.left;

      if (obj.identifier && natives.indexOf(obj.value) >= 0 &&
          state.funct["(scope)"].isPredefined(obj.value)) {
        return obj.value;
      }
    }

    var prototype = walkPrototype(left);
    if (prototype) return walkNative(prototype);
  }

  /**
   * Determine if the given token is a valid assignment target; emit errors
   * and/or warnings as appropriate
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   * @param {token} left - the left hand side of the assignment
   * @param {token=} assignToken - the token for the assignment, used for
   *                               reporting
   * @param {object=} options - optional object
   * @param {boolean} options.allowDestructuring - whether to allow
   *                                               destructuring binding
   *
   * @returns {boolean} Whether the left hand side is OK
   */
  function checkLeftSideAssign(context, left, assignToken, options) {

    var allowDestructuring = options && options.allowDestructuring;

    assignToken = assignToken || left;

    if (state.option.freeze) {
      var nativeObject = findNativePrototype(left);
      if (nativeObject)
        warning("W121", left, nativeObject);
    }

    if (left.identifier && !left.isMetaProperty) {
      // The `reassign` method also calls `modify`, but we are specific in
      // order to catch function re-assignment and globals re-assignment
      state.funct["(scope)"].block.reassign(left.value, left);
    }

    if (left.id === ".") {
      if (!left.left || left.left.value === "arguments" && !state.isStrict()) {
        warning("W143", assignToken);
      }

      state.nameStack.set(state.tokens.prev);
      return true;
    } else if (left.id === "{" || left.id === "[") {
      if (!allowDestructuring || !left.destructAssign) {
        if (left.id === "{" || !left.left) {
          warning("E031", assignToken);
        } else if (left.left.value === "arguments" && !state.isStrict()) {
          warning("W143", assignToken);
        }
      }

      if (left.id === "[") {
        state.nameStack.set(left.right);
      }

      return true;
    } else if (left.identifier && !isReserved(context, left) && !left.isMetaProperty) {
      if (state.funct["(scope)"].bindingtype(left.value) === "exception") {
        warning("W022", left);
      }

      if (left.value === "eval" && state.isStrict()) {
        error("E031", assignToken);
        return false;
      } else if (left.value === "arguments") {
        if (!state.isStrict()) {
          warning("W143", assignToken);
        } else {
          error("E031", assignToken);
          return false;
        }
      }
      state.nameStack.set(left);
      return true;
    }

    error("E031", assignToken);

    return false;
  }

  /**
   * Convenience function for defining JSHint symbols for assignment operators.
   *
   * @param {string} s - the name of the symbol
   * @param {function} [f] - a function to be invoked that consumes the
   *                         right-hand side of the operator (see the `infix`
   *                         function)
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function assignop(s, f) {
    var x = infix(s, typeof f === "function" ? f : function(context, left, that) {
      that.left = left;

      checkLeftSideAssign(context, left, that, { allowDestructuring: true });

      that.right = expression(context, 10);

      return that;
    }, 20);

    x.exps = true;
    x.assign = true;

    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for bitwise operators.
   *
   * @param {string} s - the name of the symbol
   * @param {function} [f] - the left denotation function for the symbol; see
   *                         the `expression` function for more detail
   * @param {number} p - the left-binding power of the token as used by the
   *                     Pratt parsing semantics
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function bitwise(s, f, p) {
    var x = symbol(s, p);
    reserveName(x);
    x.infix = true;
    x.led = (typeof f === "function") ? f : function(context, left) {
      if (state.option.bitwise) {
        warning("W016", this, this.id);
      }
      this.left = left;
      this.right = expression(context, p);
      return this;
    };
    return x;
  }

  /**
   * Convenience function for defining JSHint symbols for bitwise assignment
   * operators. See the `assignop` function for more detail.
   *
   * @param {string} s - the name of the symbol
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function bitwiseassignop(s) {
    symbol(s, 20).exps = true;
    return infix(s, function(context, left, that) {
      if (state.option.bitwise) {
        warning("W016", that, that.id);
      }

      checkLeftSideAssign(context, left, that);

      that.right = expression(context, 10);

      return that;
    }, 20);
  }

  /**
   * Convenience function for defining JSHint symbols for those operators which
   * have a single operand that appears before them in the source code.
   *
   * @param {string} s - the name of the symbol
   *
   * @returns {object} - the object describing the JSHint symbol (provided to
   *                     support cases where further refinement is necessary)
   */
  function suffix(s) {
    var x = symbol(s, 150);

    x.led = function(context, left) {
      // this = suffix e.g. "++" punctuator
      // left = symbol operated e.g. "a" identifier or "a.b" punctuator
      if (state.option.plusplus) {
        warning("W016", this, this.id);
      }

      checkLeftSideAssign(context, left, this);

      this.left = left;
      return this;
    };
    return x;
  }

  /**
   * Retrieve the value of the next token if it is an identifier and optionally
   * advance the parser.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   * @param {boolean} [isName] - `true` if an IdentifierName should be consumed
   *                             (e.g. object properties)
   * @param {boolean} [preserve] - `true` if the token should not be consumed
   *
   * @returns {string|undefined} - the value of the identifier, if present
   */
  function optionalidentifier(context, isName, preserve) {
    if (!state.tokens.next.identifier) {
      return;
    }

    if (!preserve) {
      advance();
    }

    var curr = state.tokens.curr;

    if (isReserved(context, curr) && !(isName && state.inES5())) {
      warning("W024", state.tokens.curr, state.tokens.curr.id);
    }

    return curr.value;
  }

  /**
   * Consume the "..." token which designates "spread" and "rest" operations if
   * it is present. If the operator is repeated, consume every repetition, and
   * issue a single error describing the syntax error.
   *
   * @param {string} operation - either "spread" or "rest"
   *
   * @returns {boolean} a value describing whether or not any tokens were
   *                    consumed in this way
   */
  function spreadrest(operation) {
    if (!checkPunctuator(state.tokens.next, "...")) {
      return false;
    }

    if (!state.inES6(true)) {
      warning("W119", state.tokens.next, operation + " operator", "6");
    }
    advance();

    if (checkPunctuator(state.tokens.next, "...")) {
      warning("E024", state.tokens.next, "...");
      while (checkPunctuator(state.tokens.next, "...")) {
        advance();
      }
    }

    return true;
  }

  /**
   * Ensure that the current token is an identifier and retrieve its value.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   * @param {boolean} [isName] - `true` if an IdentifierName should be consumed
   *                             (e.g. object properties)
   *
   * @returns {string|undefined} - the value of the identifier, if present
   */
  function identifier(context, isName) {
    var i = optionalidentifier(context, isName, false);
    if (i) {
      return i;
    }

    error("E030", state.tokens.next, state.tokens.next.value);

    // The token should be consumed after a warning is issued so the parser
    // can continue as though an identifier were found. The semicolon token
    // should not be consumed in this way so that the parser interprets it as
    // a statement delimiter;
    if (state.tokens.next.id !== ";") {
      advance();
    }
  }


  /**
   * Determine if the provided token may be evaluated and emit a linting
   * warning if this is note the case.
   *
   * @param {token} controlToken
   */
  function reachable(controlToken) {
    var i = 0, t;
    if (state.tokens.next.id !== ";" || controlToken.inBracelessBlock) {
      return;
    }
    for (;;) {
      do {
        t = peek(i);
        i += 1;
      } while (t.id !== "(end)" && t.id === "(comment)");

      if (t.reach) {
        return;
      }

      if (t.id !== "(endline)") {
        if (isFunction(t, i)) {
          if (state.option.latedef === true) {
            warning("W026", t);
          }
          break;
        }

        warning("W027", t, t.value, controlToken.value);
        break;
      }
    }

    function isFunction(t, i) {
      if (t.id === "function") {
        return true;
      }
      if (t.id === "async") {
        t = peek(i);
        return t.id === "function";
      }
    }
  }

  /**
   * Consume the semicolon that delimits the statement currently being parsed,
   * emitting relevant warnings/errors as appropriate.
   *
   * @param {token} stmt - token describing the statement under consideration
   */
  function parseFinalSemicolon(stmt) {
    if (state.tokens.next.id !== ";") {
      // don't complain about unclosed templates / strings
      if (state.tokens.next.isUnclosed) return advance();

      var isSameLine = sameLine(state.tokens.curr, state.tokens.next) &&
                       state.tokens.next.id !== "(end)";
      var blockEnd = checkPunctuator(state.tokens.next, "}");

      if (isSameLine && !blockEnd && !(stmt.id === "do" && state.inES6(true))) {
        errorAt("E058", state.tokens.curr.line, state.tokens.curr.character);
      } else if (!state.option.asi) {

        // If this is the last statement in a block that ends on the same line
        // *and* option lastsemic is on, ignore the warning.  Otherwise, issue
        // a warning about missing semicolon.
        if (!(blockEnd && isSameLine && state.option.lastsemic)) {
          warningAt("W033", state.tokens.curr.line, state.tokens.curr.character);
        }
      }
    } else {
      advance(";");
    }
  }

  /**
   * Consume a statement.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   *
   * @returns {token} - the token describing the statement
   */
  function statement(context) {
    var i = indent, r, t = state.tokens.next, hasOwnScope = false;

    context |= prodParams.initial;

    if (t.id === ";") {
      advance(";");
      return;
    }

    // Is this a labelled statement?
    var res = isReserved(context, t);

    // We're being more tolerant here: if someone uses
    // a FutureReservedWord (that is not meant to start a statement)
    // as a label, we warn but proceed anyway.

    if (res && t.meta && t.meta.isFutureReservedWord && !t.fud) {
      warning("W024", t, t.id);
      res = false;
    }

    if (t.identifier && !res && peek().id === ":") {
      advance();
      advance(":");

      hasOwnScope = true;
      state.funct["(scope)"].stack();
      state.funct["(scope)"].block.addLabel(t.value, { token: state.tokens.curr });

      if (!state.tokens.next.labelled && state.tokens.next.value !== "{") {
        warning("W028", state.tokens.next, t.value, state.tokens.next.value);
      }

      t = state.tokens.next;
    }

    // Is it a lonely block?

    if (t.id === "{") {
      // Is it a switch case block?
      //
      //  switch (foo) {
      //    case bar: { <= here.
      //      ...
      //    }
      //  }
      var iscase = (state.funct["(verb)"] === "case" && state.tokens.curr.value === ":");
      block(context, true, true, false, false, iscase);

      if (hasOwnScope) {
        state.funct["(scope)"].unstack();
      }

      return;
    }

    // Parse the statement.

    r = expression(context, 0);

    if (r && !(r.identifier && r.value === "function") &&
        !(r.type === "(punctuator)" && r.left &&
          r.left.identifier && r.left.value === "function")) {
      if (!state.isStrict() && state.stmtMissingStrict()) {
        warning("E007");
      }
    }

    // Look for the final semicolon.

    if (!t.block) {
      if (!state.option.expr && (!r || !r.exps)) {
        warning("W030", state.tokens.curr);
      } else if (state.option.nonew && r && r.left && r.id === "(" && r.left.id === "new") {
        warning("W031", t);
      }

      parseFinalSemicolon(t);
    }


    // Restore the indentation.

    indent = i;
    if (hasOwnScope) {
      state.funct["(scope)"].unstack();
    }
    return r;
  }

  /**
   * Consume a series of statements until encountering either the end of the
   * program or a token that interrupts control flow.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   *
   * @returns {Array<token>} - the tokens consumed
   */
  function statements(context) {
    var a = [], p;

    while (!state.tokens.next.reach && state.tokens.next.id !== "(end)") {
      if (state.tokens.next.id === ";") {
        p = peek();

        if (!p || (p.id !== "(" && p.id !== "[")) {
          warning("W032");
        }

        advance(";");
      } else {
        a.push(statement(context));
      }
    }
    return a;
  }


  /**
   * Parse any directives in a directive prologue.
   */
  function directives() {
    var current = state.tokens.next;
    while (state.tokens.next.id === "(string)") {
      var next = peekIgnoreEOL();
      if (!isEndOfExpr(0, current, next)) {
        break;
      }
      current = next;

      advance();
      var directive = state.tokens.curr.value;
      if (state.directive[directive] ||
          (directive === "use strict" && state.option.strict === "implied")) {
        warning("W034", state.tokens.curr, directive);
      }

      // From ECMAScript 2016:
      //
      // > 14.1.2 Static Semantics: Early Errors
      // >
      // > [...]
      // > - It is a Syntax Error if ContainsUseStrict of FunctionBody is true
      // >   and IsSimpleParameterList of FormalParameters is false.
      if (directive === "use strict" && state.inES7() &&
        !state.funct["(global)"] && state.funct["(hasSimpleParams)"] === false) {
        error("E065", state.tokens.curr);
      }

      state.directive[directive] = state.tokens.curr;

      parseFinalSemicolon(current);
    }

    if (state.isStrict()) {
      state.option.undef = true;
    }
  }

  /**
   * Parses a single block. A block is a sequence of statements wrapped in
   * braces.
   *
   * @param {number} context - parsing context
   * @param {boolean} ordinary - `true` for everything but function bodies and
   *                             try blocks
   * @param {boolean} [stmt] - `true` if block can be a single statement (e.g.
   *                           in if/for/while)
   * @param {boolean} [isfunc] - `true` if block is a function body
   * @param {boolean} [isfatarrow] - `true` if its a body of a fat arrow
   *                                 function
   * @param {boolean} [iscase] - `true` if block is a switch case block
   *
   * @returns {token} - the token describing the block
   */
  function block(context, ordinary, stmt, isfunc, isfatarrow, iscase) {
    var a,
      b = inblock,
      old_indent = indent,
      m,
      t,
      d;

    inblock = ordinary;

    t = state.tokens.next;

    var metrics = state.funct["(metrics)"];
    metrics.nestedBlockDepth += 1;
    metrics.verifyMaxNestedBlockDepthPerFunction();

    if (state.tokens.next.id === "{") {
      advance("{");

      // create a new block scope
      state.funct["(scope)"].stack();

      if (state.tokens.next.id !== "}") {
        indent += state.option.indent;
        while (!ordinary && state.tokens.next.from > indent) {
          indent += state.option.indent;
        }

        if (isfunc) {
          m = {};
          for (d in state.directive) {
            m[d] = state.directive[d];
          }
          directives();

          state.funct["(isStrict)"] = state.isStrict();

          if (state.option.strict && state.funct["(context)"]["(global)"]) {
            if (!m["use strict"] && !state.isStrict()) {
              warning("E007");
            }
          }
        }

        a = statements(context);

        metrics.statementCount += a.length;

        indent -= state.option.indent;
      } else if (isfunc) {
        // Ensure property is set for functions with empty bodies.
        state.funct["(isStrict)"] = state.isStrict();
      }

      advance("}", t);

      if (isfunc) {
        state.funct["(scope)"].validateParams(isfatarrow);
        if (m) {
          state.directive = m;
        }
      }

      state.funct["(scope)"].unstack();

      indent = old_indent;
    } else if (!ordinary) {
      if (isfunc) {
        state.funct["(scope)"].stack();

        if (stmt && !isfatarrow && !state.inMoz()) {
          error("W118", state.tokens.curr, "function closure expressions");
        }

        if (isfatarrow) {
          state.funct["(scope)"].validateParams(true);
        }

        var expr = expression(context, 10);

        if (state.option.noreturnawait && context & prodParams.async &&
            expr.identifier && expr.value === "await") {
          warning("W146", expr);
        }

        if (state.option.strict && state.funct["(context)"]["(global)"]) {
          if (!state.isStrict()) {
            warning("E007");
          }
        }

        state.funct["(scope)"].unstack();
      } else {
        error("E021", state.tokens.next, "{", state.tokens.next.value);
      }
    } else {

      state.funct["(scope)"].stack();

      if (!stmt || state.option.curly) {
        warning("W116", state.tokens.next, "{", state.tokens.next.value);
      }

      // JSHint observes Annex B of the ECMAScript specification by default,
      // where function declarations are permitted in the statement positions
      // of IfStatements.
      var supportsFnDecl = state.funct["(verb)"] === "if" ||
        state.tokens.curr.id === "else";

      state.tokens.next.inBracelessBlock = true;
      indent += state.option.indent;
      // test indentation only if statement is in new line
      a = [statement(context)];
      indent -= state.option.indent;

      if (a[0] && a[0].declaration &&
        !(supportsFnDecl && a[0].id === "function")) {
        error("E048", a[0], a[0].id[0].toUpperCase() + a[0].id.slice(1));
      }

      state.funct["(scope)"].unstack();
    }

    // Don't clear and let it propagate out if it is "break", "return" or
    // similar in switch case
    switch (state.funct["(verb)"]) {
    case "break":
    case "continue":
    case "return":
    case "throw":
      if (iscase) {
        break;
      }

      /* falls through */
    default:
      state.funct["(verb)"] = null;
    }

    inblock = b;
    if (ordinary && state.option.noempty && (!a || a.length === 0)) {
      warning("W035", state.tokens.prev);
    }
    metrics.nestedBlockDepth -= 1;
    return a;
  }


  /**
   * Update the global state which tracks all statically-identifiable property
   * names, and emit a warning if the `members` linting directive is in use and
   * does not include the given name.
   *
   * @param {string} m - the property name
   */
  function countMember(m) {
    if (membersOnly && typeof membersOnly[m] !== "boolean") {
      warning("W036", state.tokens.curr, m);
    }
    if (typeof member[m] === "number") {
      member[m] += 1;
    } else {
      member[m] = 1;
    }
  }

  // Build the syntax table by declaring the syntactic elements of the language.

  type("(number)", function() {
    if (state.tokens.next.id === ".") {
      warning("W005", this);
    }

    return this;
  });

  type("(string)", function() {
    return this;
  });

  state.syntax["(identifier)"] = {
    type: "(identifier)",
    lbp: 0,
    identifier: true,

    nud: function(context) {
      var v = this.value;
      // If this identifier is the lone parameter to a shorthand "fat arrow"
      // function definition, i.e.
      //
      //     x => x;
      //
      // ...it should not be considered as a variable in the current scope. It
      // will be added to the scope of the new function when the next token is
      // parsed, so it can be safely ignored for now.
      var isLoneArrowParam = state.tokens.next.id === "=>";

      if (isReserved(context, this)) {
        warning("W024", this, v);
      } else if (!isLoneArrowParam && !state.funct["(comparray)"].check(v)) {
        state.funct["(scope)"].block.use(v, state.tokens.curr);
      }

      return this;
    },

    led: function() {
      /* istanbul ignore next */
      error("E033", state.tokens.next, state.tokens.next.value);
    }
  };

  var baseTemplateSyntax = {
    identifier: false,
    template: true,
  };
  state.syntax["(template)"] = _.extend({
    lbp: 155,
    type: "(template)",
    nud: doTemplateLiteral,
    led: doTemplateLiteral,
    noSubst: false
  }, baseTemplateSyntax);

  state.syntax["(template middle)"] = _.extend({
    lbp: 0,
    type: "(template middle)",
    noSubst: false
  }, baseTemplateSyntax);

  state.syntax["(template tail)"] = _.extend({
    lbp: 0,
    type: "(template tail)",
    tail: true,
    noSubst: false
  }, baseTemplateSyntax);

  state.syntax["(no subst template)"] = _.extend({
    lbp: 155,
    type: "(template)",
    nud: doTemplateLiteral,
    led: doTemplateLiteral,
    noSubst: true,
    tail: true // mark as tail, since it's always the last component
  }, baseTemplateSyntax);

  type("(regexp)", function() {
    return this;
  });

  // ECMAScript parser

  delim("(endline)");
  (function(x) {
    x.line = x.from = 0;
  })(delim("(begin)"));
  delim("(end)").reach = true;
  delim("(error)").reach = true;
  delim("}").reach = true;
  delim(")");
  delim("]");
  delim("\"").reach = true;
  delim("'").reach = true;
  delim(";");
  delim(":").reach = true;
  delim("#");

  reserve("else");
  reserve("case").reach = true;
  reserve("catch");
  reserve("default").reach = true;
  reserve("finally");
  reserve("true", function() { return this; });
  reserve("false", function() { return this; });
  reserve("null", function() { return this; });
  reserve("this", function() {
    if (state.isStrict() && !isMethod() &&
        !state.option.validthis && ((state.funct["(statement)"] &&
        state.funct["(name)"].charAt(0) > "Z") || state.funct["(global)"])) {
      warning("W040", this);
    }

    return this;
  });

  (function(superSymbol) {
    superSymbol.rbp = 161;
  })(reserve("super", function() {
    superNud.call(state.tokens.curr, this);

    return this;
  }));

  assignop("=", "assign");
  assignop("+=", "assignadd");
  assignop("-=", "assignsub");
  assignop("*=", "assignmult");
  assignop("/=", "assigndiv").nud = function() {
    /* istanbul ignore next */
    error("E014");
  };
  assignop("%=", "assignmod");
  assignop("**=", function(context, left, that) {
    if (!state.inES7()) {
      warning("W119", that, "Exponentiation operator", "7");
    }

    that.left = left;

    checkLeftSideAssign(context, left, that);

    that.right = expression(context, 10);

    return that;
  });

  bitwiseassignop("&=");
  bitwiseassignop("|=");
  bitwiseassignop("^=");
  bitwiseassignop("<<=");
  bitwiseassignop(">>=");
  bitwiseassignop(">>>=");
  infix(",", function(context, left, that) {
    if (state.option.nocomma) {
      warning("W127", that);
    }

    that.left = left;

    if (checkComma()) {
      that.right = expression(context, 10);
    } else {
      that.right = null;
    }

    return that;
  }, 10, true);

  infix("?", function(context, left, that) {
    increaseComplexityCount();
    that.left = left;
    that.right = expression(context & ~prodParams.noin, 10);
    advance(":");
    expression(context, 10);
    return that;
  }, 30);

  infix("||", function(context, left, that) {
    increaseComplexityCount();
    that.left = left;
    that.right = expression(context, 40);
    return that;
  }, 40);

  var andPrecedence = 50;
  infix("&&", function(context, left, that) {
    increaseComplexityCount();
    that.left = left;
    that.right = expression(context, andPrecedence);
    return that;
  }, andPrecedence);

  infix("??", function(context, left, that) {
    if (!left.paren && (left.id === "||" || left.id === "&&")) {
      error("E024", that, "??");
    }

    if (!state.inES11()) {
      warning("W119", that, "nullish coalescing", "11");
    }

    increaseComplexityCount();
    that.left = left;
    var right = that.right = expression(context, 39);

    if (!right) {
      error("E024", state.tokens.next, state.tokens.next.id);
    } else if (!right.paren && (right.id === "||" || right.id === "&&")) {
      error("E024", that.right, that.right.id);
    }

    return that;
  }, 39);

  // The Exponentiation operator, introduced in ECMAScript 2016
  //
  // ExponentiationExpression[Yield] :
  //   UnaryExpression[?Yield]
  //   UpdateExpression[?Yield] ** ExponentiationExpression[?Yield]
  infix("**", function(context, left, that) {
    if (!state.inES7()) {
      warning("W119", that, "Exponentiation operator", "7");
    }

    // Disallow UnaryExpressions which are not wrapped in parenthesis
    if (!left.paren && beginsUnaryExpression(left)) {
      error("E024", that, "**");
    }

    that.left = left;
    that.right = expression(context, that.rbp);
    return that;
  }, 150);
  state.syntax["**"].rbp = 140;
  bitwise("|", "bitor", 70);
  bitwise("^", "bitxor", 80);
  bitwise("&", "bitand", 90);
  relation("==", function(context, left, right) {
    var eqnull = state.option.eqnull &&
      ((left && left.value) === "null" || (right && right.value) === "null");

    switch (true) {
      case !eqnull && state.option.eqeqeq:
        this.from = this.character;
        warning("W116", this, "===", "==");
        break;
      /* istanbul ignore next */
      case isTypoTypeof(right, left, state):
        warning("W122", this, right.value);
        break;
      case isTypoTypeof(left, right, state):
        warning("W122", this, left.value);
        break;
    }

    return this;
  });
  relation("===", function(context, left, right) {
    if (isTypoTypeof(right, left, state)) {
      warning("W122", this, right.value);
    } else if (isTypoTypeof(left, right, state)) {
      /* istanbul ignore next */
      warning("W122", this, left.value);
    }
    return this;
  });
  relation("!=", function(context, left, right) {
    var eqnull = state.option.eqnull &&
        ((left && left.value) === "null" || (right && right.value) === "null");

    if (!eqnull && state.option.eqeqeq) {
      this.from = this.character;
      warning("W116", this, "!==", "!=");
    } else if (isTypoTypeof(right, left, state)) {
      /* istanbul ignore next */
      warning("W122", this, right.value);
    } else if (isTypoTypeof(left, right, state)) {
      warning("W122", this, left.value);
    }
    return this;
  });
  relation("!==", function(context, left, right) {
    if (isTypoTypeof(right, left, state)) {
      warning("W122", this, right.value);
    } else if (isTypoTypeof(left, right, state)) {
      /* istanbul ignore next */
      warning("W122", this, left.value);
    }
    return this;
  });
  relation("<");
  relation(">");
  relation("<=");
  relation(">=");
  bitwise("<<", "shiftleft", 120);
  bitwise(">>", "shiftright", 120);
  bitwise(">>>", "shiftrightunsigned", 120);
  infix("in", "in", 120);
  infix("instanceof", function(context, left, token) {
    var right;
    var scope = state.funct["(scope)"];
    token.left = left;
    token.right = right = expression(context, 120);

    // This condition reflects a syntax error which will be reported by the
    // `expression` function.
    if (!right) {
      return token;
    }

    if (right.id === "(number)" ||
        right.id === "(string)" ||
        right.value === "null" ||
        (right.value === "undefined" && !scope.has("undefined")) ||
        right.arity === "unary" ||
        right.id === "{" ||
        (right.id === "[" && !right.right) ||
        right.id === "(regexp)" ||
        (right.id === "(template)" && !right.tag)) {
      error("E060");
    }

    if (right.id === "function") {
      warning("W139");
    }

    return token;
  }, 120);
  infix("+", function(context, left, that) {
    var next = state.tokens.next;
    var right;
    that.left = left;
    that.right = right = expression(context, 130);

    if (left && right && left.id === "(string)" && right.id === "(string)") {
      left.value += right.value;
      left.character = right.character;
      if (!state.option.scripturl && reg.javascriptURL.test(left.value)) {
        warning("W050", left);
      }
      return left;
    }

    if (next.id === "+" || next.id === "++") {
      warning("W007", that.right);
    }

    return that;
  }, 130);
  prefix("+", function(context) {
    var next = state.tokens.next;
    this.arity = "unary";
    this.right = expression(context, 150);

    if (next.id === "+" || next.id === "++") {
      warning("W007", this.right);
    }

    return this;
  });
  infix("-", function(context, left, that) {
    var next = state.tokens.next;
    that.left = left;
    that.right = expression(context, 130);

    if (next.id === "-" || next.id === "--") {
      warning("W006", that.right);
    }

    return that;
  }, 130);
  prefix("-", function(context) {
    var next = state.tokens.next;
    this.arity = "unary";
    this.right = expression(context, 150);

    if (next.id === "-" || next.id === "--") {
      warning("W006", this.right);
    }

    return this;
  });
  infix("*", "mult", 140);
  infix("/", "div", 140);
  infix("%", "mod", 140);

  suffix("++");
  prefix("++", "preinc");
  state.syntax["++"].exps = true;

  suffix("--");
  prefix("--", "predec");
  state.syntax["--"].exps = true;

  prefix("delete", function(context) {
    this.arity = "unary";
    var p = expression(context, 150);
    if (!p) {
      return this;
    }

    if (p.id !== "." && p.id !== "[") {
      warning("W051");
    }
    this.first = p;

    // The `delete` operator accepts unresolvable references when not in strict
    // mode, so the operand may be undefined.
    if (p.identifier && !state.isStrict()) {
      p.forgiveUndef = true;
    }
    return this;
  }).exps = true;

  prefix("~", function(context) {
    if (state.option.bitwise) {
      warning("W016", this, "~");
    }
    this.arity = "unary";
    this.right = expression(context, 150);
    return this;
  });

  infix("...");

  prefix("!", function(context) {
    this.arity = "unary";
    this.right = expression(context, 150);

    if (!this.right) { // '!' followed by nothing? Give up.
      quit("E041", this);
    }

    if (bang[this.right.id] === true) {
      warning("W018", this, "!");
    }
    return this;
  });

  prefix("typeof", function(context) {
    this.arity = "unary";
    var p = expression(context, 150);
    this.first = this.right = p;

    if (!p) { // 'typeof' followed by nothing? Give up.
      quit("E041", this);
    }

    // The `typeof` operator accepts unresolvable references, so the operand
    // may be undefined.
    if (p.identifier) {
      p.forgiveUndef = true;
    }
    return this;
  });
  prefix("new", function(context) {
    var mp = metaProperty(context, "target", function() {
      if (!state.inES6(true)) {
        warning("W119", state.tokens.prev, "new.target", "6");
      }
      var inFunction, c = state.funct;
      while (c) {
        inFunction = !c["(global)"];
        if (!c["(arrow)"]) { break; }
        c = c["(context)"];
      }
      if (!inFunction) {
        warning("W136", state.tokens.prev, "new.target");
      }
    });
    if (mp) { return mp; }

    var opening = state.tokens.next;
    var c = expression(context, 155), i;

    if (!c) {
      return this;
    }

    if (!c.paren && c.rbp > 160) {
      error("E024", opening, opening.value);
    }

    if (c.id !== "function") {
      if (c.identifier) {
        switch (c.value) {
        case "Number":
        case "String":
        case "Boolean":
        case "Math":
        case "JSON":
          warning("W053", state.tokens.prev, c.value);
          break;
        case "Symbol":
          if (state.inES6()) {
            warning("W053", state.tokens.prev, c.value);
          }
          break;
        case "Function":
          if (!state.option.evil) {
            warning("W054");
          }
          break;
        case "Date":
        case "RegExp":
        case "this":
          break;
        default:
          i = c.value.substr(0, 1);
          if (state.option.newcap && (i < "A" || i > "Z") &&
            !state.funct["(scope)"].isPredefined(c.value)) {
            warning("W055", state.tokens.curr);
          }
        }
      } else {
        if (c.id === "?." && !c.paren) {
          error("E024", c, "?.");
        } else if (c.id !== "." && c.id !== "[" && c.id !== "(") {
          /* istanbul ignore next */
          warning("W056", state.tokens.curr);
        }
      }
    } else {
      if (!state.option.supernew)
        warning("W057", this);
    }
    if (state.tokens.next.id !== "(" && !state.option.supernew) {
      warning("W058", state.tokens.curr, state.tokens.curr.value);
    }
    this.first = this.right = c;
    return this;
  });
  state.syntax["new"].exps = true;


  var classDeclaration = blockstmt("class", function(context) {
    var className, classNameToken;

    if (!state.inES6()) {
      warning("W104", state.tokens.curr, "class", "6");
    }
    state.inClassBody = true;

    // Class Declaration: 'class <Classname>'
    if (state.tokens.next.identifier && state.tokens.next.value !== "extends") {
      classNameToken = state.tokens.next;
      className = classNameToken.value;
      identifier(context);
      // unintialized, so that the 'extends' clause is parsed while the class is in TDZ
      state.funct["(scope)"].addbinding(className, {
        type: "class",
        initialized: false,
        token: classNameToken
      });
    }

    // Class Declaration: 'class <Classname> extends <Superclass>'
    if (state.tokens.next.value === "extends") {
      advance("extends");
      expression(context, 0);
    }

    if (classNameToken) {
      this.name = classNameToken;
      state.funct["(scope)"].initialize(className);
    } else {
      this.name = null;
    }

    state.funct["(scope)"].stack();
    classBody(this, context);
    return this;
  });
  classDeclaration.exps = true;
  classDeclaration.declaration = true;

  /*
    Class expression

    The Block- and Expression- handling for "class" are almost identical, except for the ordering of steps.
    In an expression:, the name should not be saved into the calling scope, but is still accessible inside the definition, so we open a new scope first, then save the name. We also mark it as used.
  */
  prefix("class", function(context) {
    var className, classNameToken;

    if (!state.inES6()) {
      warning("W104", state.tokens.curr, "class", "6");
    }
    state.inClassBody = true;

    // Class Declaration: 'class <Classname>'
    if (state.tokens.next.identifier && state.tokens.next.value !== "extends") {
      classNameToken = state.tokens.next;
      className = classNameToken.value;
      identifier(context);
    }

    // Class Declaration: 'class <Classname> extends <Superclass>'
    if (state.tokens.next.value === "extends") {
      advance("extends");
      expression(context, 0);
    }

    state.funct["(scope)"].stack();
    if (classNameToken) {
      this.name = classNameToken;
      state.funct["(scope)"].addbinding(className, {
        type: "class",
        initialized: true,
        token: classNameToken
      });
      state.funct["(scope)"].block.use(className, classNameToken);
    } else {
      this.name = null;
    }

    classBody(this, context);
    return this;
  });

  function classBody(classToken, context) {
    var props = Object.create(null);
    var name, accessorType, token, isStatic, inGenerator, hasConstructor;

    /* istanbul ignore else */
    if (state.tokens.next.value === "{") {
      advance("{");
    } else {
      warning("W116", state.tokens.curr, "identifier", state.tokens.next.type); //?
      advance();
    }

    while (state.tokens.next.value !== "}") {
      isStatic = false;
      inGenerator = false;
      context &= ~prodParams.preAsync;

      if (state.tokens.next.value === "static" &&
        !checkPunctuator(peek(), "(")) {
        isStatic = true;
        advance();
      }

      if (state.tokens.next.value === "async") {
        if (!checkPunctuator(peek(), "(")) {
          context |= prodParams.preAsync;
          advance();

          nolinebreak(state.tokens.curr);

          if (checkPunctuator(state.tokens.next, "*")) {
            inGenerator = true;
            advance("*");

            if (!state.inES9()) {
              warning("W119", state.tokens.next, "async generators", "9");
            }
          }

          if (!state.inES8()) {
            warning("W119", state.tokens.curr, "async functions", "8");
          }
        }
      }

      if (state.tokens.next.value === "*") {
        inGenerator = true;
        advance();
      }

      token = state.tokens.next;

      if ((token.value === "set" || token.value === "get") && !checkPunctuator(peek(), "(")) {
        if (inGenerator) {
          /* istanbul ignore next */
          error("E024", token, token.value);
        }
        accessorType = token.value;
        advance();
        token = state.tokens.next;

        if (!isStatic && token.value === "constructor") {
          error("E049", token, "class " + accessorType + "ter method", token.value);
        } else if (isStatic && token.value === "prototype") {
          error("E049", token, "static class " + accessorType + "ter method", token.value);
        }
      } else {
        accessorType = null;
      }

      switch (token.value) {
        case ";":
          warning("W032", token);
          advance();
          break;
        case "constructor":
          if (isStatic) {
            // treat like a regular method -- static methods can be called 'constructor'
            name = propertyName(context);
            saveProperty(props, name, token, true, isStatic);
            doMethod(classToken, context, name, inGenerator);
          } else {
            if (inGenerator || context & prodParams.preAsync) {
              error("E024", token, token.value);
            } else if (hasConstructor) {
              /* istanbul ignore next */
              error("E024", token, token.value);
            } else {
              hasConstructor = !accessorType && !isStatic;
            }
            advance();
            doMethod(classToken, context, state.nameStack.infer());
          }
          break;
        case "[":
          name = computedPropertyName(context);
          doMethod(classToken, context, name, inGenerator);
          // We don't check names (via calling saveProperty()) of computed expressions like ["Symbol.iterator"]()
          break;
        default:
          name = propertyName(context);
          if (name === undefined) {
            error("E024", token, token.value);
            advance();
            break;
          }

          if (accessorType) {
            saveAccessor(accessorType, props, name, token, true, isStatic);
            name = state.nameStack.infer();
          } else {
            if (isStatic && name === "prototype") {
              error("E049", token, "static class method", name);
            }

            saveProperty(props, name, token, true, isStatic);
          }

          doMethod(classToken, context, name, inGenerator);
          break;
      }
    }
    advance("}");
    checkProperties(props);

    state.inClassBody = false;
    state.funct["(scope)"].unstack();
  }

  function doMethod(classToken, context, name, generator) {
    if (generator) {
      if (!state.inES6()) {
        warning("W119", state.tokens.curr, "function*", "6");
      }
    }

    if (state.tokens.next.value !== "(") {
      error("E054", state.tokens.next, state.tokens.next.value);
      advance();
      if (state.tokens.next.value === "{") {
        // manually cheating the test "invalidClasses", which asserts this particular behavior when a class is misdefined.
        advance();
        if (state.tokens.next.value === "}") {
          warning("W116", state.tokens.next, "(", state.tokens.next.value);
          advance();
          identifier(context);
          advance();
        }
        /* istanbul ignore next */
        return;
      } else {
        while (state.tokens.next.value !== "(") {
          advance();
        }
      }
    }

    doFunction(context, { name: name,
        type: generator ? "generator" : null,
        isMethod: true,
        statement: classToken });
  }

  prefix("void").exps = true;

  infix(".", function(context, left, that) {
    var m = identifier(context, true);

    if (typeof m === "string") {
      countMember(m);
    }

    that.left = left;
    that.right = m;

    if (m && m === "hasOwnProperty" && state.tokens.next.value === "=") {
      warning("W001");
    }

    if (left && left.value === "arguments" && (m === "callee" || m === "caller")) {
      if (state.option.noarg)
        warning("W059", left, m);
      else if (state.isStrict())
        error("E008");
    } else if (!state.option.evil && left && left.value === "document" &&
        (m === "write" || m === "writeln")) {
      warning("W060", left);
    }

    if (!state.option.evil && (m === "eval" || m === "execScript")) {
      if (isGlobalEval(left, state)) {
        warning("W061");
      }
    }

    return that;
  }, 160, true);

  infix("?.", function(context, left, that) {
    if (!state.inES11()) {
      warning("W119", state.tokens.curr, "Optional chaining", "11");
    }


    if (checkPunctuator(state.tokens.next, "[")) {
      that.left = left;
      advance();
      that.right = state.tokens.curr.led(context, left);
    } else if (checkPunctuator(state.tokens.next, "(")) {
      that.left = left;
      advance();
      that.right = state.tokens.curr.led(context, left);
      that.exps = true;
    } else {
      state.syntax["."].led.call(that, context, left);
    }

    if (state.tokens.next.type === "(template)") {
      error("E024", state.tokens.next, "`");
    }

    return that;
  }, 160, true);


  /**
   * Determine if a CallExpression's "base" is a type of expression commonly
   * used in this position.
   *
   * @param {token} token - token describing the "base" of the CallExpression
   * @returns {boolean}
   */
  function isTypicalCallExpression(token) {
    return token.identifier || token.id === "." || token.id === "[" ||
      token.id === "=>" || token.id === "(" || token.id === "&&" ||
      token.id === "||" || token.id === "?" || token.id === "async" ||
      token.id === "?." || (state.inES6() && token["(name)"]);
  }

  infix("(", function(context, left, that) {
    if (state.option.immed && left && !left.immed && left.id === "function") {
      warning("W062");
    }

    if (state.option.asi && checkPunctuators(state.tokens.prev, [")", "]"]) &&
      !sameLine(state.tokens.prev, state.tokens.curr)) {
      warning("W014", state.tokens.curr, state.tokens.curr.id);
    }

    var n = 0;
    var p = [];

    if (left) {
      if (left.type === "(identifier)") {
        var newcapRe = /^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/;
        var newcapIgnore = [
          "Array", "Boolean", "Date", "Error", "Function", "Number",
          "Object", "RegExp", "String", "Symbol"
        ];
        if (newcapRe.test(left.value) && newcapIgnore.indexOf(left.value) === -1) {
          if (left.value === "Math") {
            /* istanbul ignore next */
            warning("W063", left);
          } else if (state.option.newcap) {
            warning("W064", left);
          }
        }
      }
    }

    if (state.tokens.next.id !== ")") {
      for (;;) {
        spreadrest("spread");

        p[p.length] = expression(context, 10);
        n += 1;
        if (state.tokens.next.id !== ",") {
          break;
        }
        advance(",");
        checkComma({ allowTrailing: true });

        if (state.tokens.next.id === ")") {
          if (!state.inES8()) {
            warning("W119", state.tokens.curr, "Trailing comma in arguments lists", "8");
          }

          break;
        }
      }
    }

    advance(")");

    if (typeof left === "object") {
      if (!state.inES5() && left.value === "parseInt" && n === 1) {
        warning("W065", state.tokens.curr);
      }
      if (!state.option.evil) {
        if (left.value === "eval" || left.value === "Function" ||
            left.value === "execScript") {
          warning("W061", left);

          // This conditional expression was initially implemented with a typo
          // which prevented the branch's execution in all cases. While
          // enabling the code will produce behavior that is consistent with
          // the other forms of code evaluation that follow, such a change is
          // also technically incompatable with prior versions of JSHint (due
          // to the fact that the behavior was never formally documented). This
          // branch should be enabled as part of a major release.
          //if (p[0] && p[0].id === "(string)") {
          //  addEvalCode(left, p[0]);
          //}
        } else if (p[0] && p[0].id === "(string)" &&
             (left.value === "setTimeout" ||
            left.value === "setInterval")) {
          warning("W066", left);
          addEvalCode(left, p[0]);

        // window.setTimeout/setInterval
        } else if (p[0] && p[0].id === "(string)" &&
             left.value === "." &&
             left.left.value === "window" &&
             (left.right === "setTimeout" ||
            left.right === "setInterval")) {
          warning("W066", left);
          addEvalCode(left, p[0]);
        }
      }
      if (!isTypicalCallExpression(left)) {
        warning("W067", that);
      }
    }

    that.left = left;
    return that;
  }, 155, true).exps = true;

  function peekThroughParens(parens) {
    var pn = state.tokens.next;
    var i = -1;
    var pn1;

    do {
      if (pn.value === "(") {
        parens += 1;
      } else if (pn.value === ")") {
        parens -= 1;
      }

      i += 1;
      pn1 = pn;
      pn = peek(i);
    } while (!(parens === 0 && pn1.value === ")") && pn.type !== "(end)");

    return pn;
  }

  prefix("(", function(context, rbp) {
    var ret, triggerFnExpr, first, last;
    var opening = state.tokens.curr;
    var preceeding = state.tokens.prev;
    var isNecessary = !state.option.singleGroups;
    var pn = peekThroughParens(1);

    if (state.tokens.next.id === "function") {
      triggerFnExpr = state.tokens.next.immed = true;
    }

    // If the balanced grouping operator is followed by a "fat arrow", the
    // current token marks the beginning of a "fat arrow" function and parsing
    // should proceed accordingly.
    if (pn.value === "=>") {
      pn.funct = doFunction(context, { type: "arrow", parsedOpening: true });
      return pn;
    }

    // The ECMA262 grammar requires an expression between the "opening
    // parenthesis" and "close parenthesis" tokens of the grouping operator.
    // However, the "ignore" directive is commonly used to inject values that
    // are not included in the token stream. For example:
    //
    //     return (
    //       /*jshint ignore:start */
    //       <div></div>
    //       /*jshint ignore:end */
    //     );
    //
    // The "empty" grouping operator is permitted in order to tolerate this
    // pattern.
    if (state.tokens.next.id === ")") {
      advance(")");
      return;
    }

    ret = expression(context, 0);

    advance(")", this);

    if (!ret) {
      return;
    }

    ret.paren = true;

    if (state.option.immed && ret && ret.id === "function") {
      if (state.tokens.next.id !== "(" &&
        state.tokens.next.id !== "." && state.tokens.next.id !== "[") {
        warning("W068", this);
      }
    }

    if (ret.id === ",") {
      first = ret.left;
      while (first.id === ",") {
        first = first.left;
      }

      last = ret.right;
    } else {
      first = last = ret;

      if (!isNecessary) {
        // async functions are identified after parsing due to the complexity
        // of disambiguating the `async` keyword.
        if (!triggerFnExpr) {
          triggerFnExpr = ret.id === "async";
        }

        isNecessary =
          // Used to distinguish from an ExpressionStatement which may not
          // begin with the `{` and `function` tokens
          (opening.beginsStmt && (ret.id === "{" || triggerFnExpr)) ||
          // Used to signal that a function expression is being supplied to
          // some other operator.
          (triggerFnExpr &&
            // For parenthesis wrapping a function expression to be considered
            // necessary, the grouping operator should be the left-hand-side of
            // some other operator--either within the parenthesis or directly
            // following them.
            (!isEndOfExpr() || state.tokens.prev.id !== "}")) ||
          // Used to demarcate an arrow function as the left-hand side of some
          // operator.
          (ret.id === "=>" && !isEndOfExpr()) ||
          // Used as the return value of a single-statement arrow function
          (ret.id === "{" && preceeding.id === "=>") ||
          // Used to cover a unary expression as the left-hand side of the
          // exponentiation operator
          (beginsUnaryExpression(ret) && state.tokens.next.id === "**") ||
          // Used to cover a logical operator as the right-hand side of the
          // nullish coalescing operator
          (preceeding.id === "??" && (ret.id === "&&" || ret.id === "||")) ||
          // Used to delineate an integer number literal from a dereferencing
          // punctuator (otherwise interpreted as a decimal point)
          (ret.type === "(number)" &&
            checkPunctuator(pn, ".") && /^\d+$/.test(ret.value)) ||
          // Used to wrap object destructuring assignment
          (opening.beginsStmt && ret.id === "=" && ret.left.id === "{") ||
          // Used to allow optional chaining with other language features which
          // are otherwise restricted.
          (ret.id === "?." &&
              (preceeding.id === "new" || state.tokens.next.type === "(template)"));
      }
    }

    // The operator may be necessary to override the default binding power of
    // neighboring operators (whenever there is an operator in use within the
    // first expression *or* the current group contains multiple expressions)
    if (!isNecessary && (isOperator(first) || first !== last)) {
      isNecessary =
        (rbp > first.lbp) ||
        (rbp > 0 && rbp === first.lbp) ||
        (!isEndOfExpr() && last.rbp < state.tokens.next.lbp);
    }

    if (!isNecessary) {
      warning("W126", opening);
    }

    return ret;
  });

  application("=>").rbp = 161;

  infix("[", function(context, left, that) {
    var e, s, canUseDot;

    if (state.option.asi && checkPunctuators(state.tokens.prev, [")", "]"]) &&
      !sameLine(state.tokens.prev, state.tokens.curr)) {
      warning("W014", state.tokens.curr, state.tokens.curr.id);
    }

    e = expression(context & ~prodParams.noin, 0);

    if (e && e.type === "(string)") {
      if (!state.option.evil && (e.value === "eval" || e.value === "execScript")) {
        if (isGlobalEval(left, state)) {
          warning("W061");
        }
      }

      countMember(e.value);
      if (!state.option.sub && reg.identifier.test(e.value)) {
        s = state.syntax[e.value];

        if (s) {
          canUseDot = !isReserved(context, s);
        } else {
          // This branch exists to preserve legacy behavior with version 2.9.5
          // and earlier. In those releases, `eval` and `arguments` were
          // incorrectly interpreted as reserved keywords, so Member
          // Expressions such as `object["eval"]` did not trigger warning W069.
          //
          // TODO: Remove in JSHint 3
          canUseDot = e.value !== "eval" && e.value !== "arguments";
        }

        if (canUseDot) {
          warning("W069", state.tokens.prev, e.value);
        }
      }
    }
    advance("]", that);

    if (e && e.value === "hasOwnProperty" && state.tokens.next.value === "=") {
      warning("W001");
    }

    that.left = left;
    that.right = e;
    return that;
  }, 160, true);

  function comprehensiveArrayExpression(context) {
    var res = {};
    res.exps = true;
    state.funct["(comparray)"].stack();

    // Handle reversed for expressions, used in spidermonkey
    var reversed = false;
    if (state.tokens.next.value !== "for") {
      reversed = true;
      if (!state.inMoz()) {
        warning("W116", state.tokens.next, "for", state.tokens.next.value);
      }
      state.funct["(comparray)"].setState("use");
      res.right = expression(context, 10);
    }

    advance("for");
    if (state.tokens.next.value === "each") {
      advance("each");
      if (!state.inMoz()) {
        warning("W118", state.tokens.curr, "for each");
      }
    }
    advance("(");
    state.funct["(comparray)"].setState("define");
    res.left = expression(context, 130);
    if (_.includes(["in", "of"], state.tokens.next.value)) {
      advance();
    } else {
      /* istanbul ignore next */
      error("E045", state.tokens.curr);
    }
    state.funct["(comparray)"].setState("generate");
    expression(context, 10);

    advance(")");
    if (state.tokens.next.value === "if") {
      advance("if");
      advance("(");
      state.funct["(comparray)"].setState("filter");
      expression(context, 10);
      advance(")");
    }

    if (!reversed) {
      state.funct["(comparray)"].setState("use");
      res.right = expression(context, 10);
    }

    advance("]");
    state.funct["(comparray)"].unstack();
    return res;
  }

  prefix("[", function(context) {
    var blocktype = lookupBlockType();
    if (blocktype.isCompArray) {
      if (!state.option.esnext && !state.inMoz()) {
        warning("W118", state.tokens.curr, "array comprehension");
      }
      return comprehensiveArrayExpression(context);
    } else if (blocktype.isDestAssign) {
      this.destructAssign = destructuringPattern(context, {
          openingParsed: true,
          assignment: true
        });
      return this;
    }
    var b = !sameLine(state.tokens.curr, state.tokens.next);
    this.first = [];
    if (b) {
      indent += state.option.indent;
      if (state.tokens.next.from === indent + state.option.indent) {
        /* istanbul ignore next */
        indent += state.option.indent;
      }
    }
    while (state.tokens.next.id !== "(end)") {
      while (state.tokens.next.id === ",") {
        if (!state.option.elision) {
          if (!state.inES5()) {
            // Maintain compat with old options --- ES5 mode without
            // elision=true will warn once per comma
            warning("W070");
          } else {
            warning("W128");
            do {
              advance(",");
            } while (state.tokens.next.id === ",");
            continue;
          }
        }
        advance(",");
      }

      if (state.tokens.next.id === "]") {
        break;
      }

      spreadrest("spread");

      this.first.push(expression(context, 10));
      if (state.tokens.next.id === ",") {
        advance(",");
        checkComma({ allowTrailing: true });
        if (state.tokens.next.id === "]" && !state.inES5()) {
          warning("W070", state.tokens.curr);
          break;
        }
      } else {
        if (state.option.trailingcomma && state.inES5()) {
          warningAt("W140", state.tokens.curr.line, state.tokens.curr.character);
        }
        break;
      }
    }
    if (b) {
      indent -= state.option.indent;
    }
    advance("]", this);
    return this;
  });


  function isMethod() {
    return !!state.funct["(method)"];
  }

  /**
   * Retrieve the value of the next token if it is a valid LiteralPropertyName
   * and optionally advance the parser.
   *
   * @param {number} context - the parsing context; see `prod-params.js` for
   *                           more information
   *
   * @returns {string|undefined} - the value of the identifier, if present
   */
  function propertyName(context) {
    var id = optionalidentifier(context, true);

    if (!id) {
      if (state.tokens.next.id === "(string)") {
        id = state.tokens.next.value;
        advance();
      } else if (state.tokens.next.id === "(number)") {
        id = state.tokens.next.value.toString();
        advance();
      }
    }

    if (id === "hasOwnProperty") {
      warning("W001");
    }

    return id;
  }

  /**
   * @param {Number} context The parsing context
   * @param {Object} [options]
   * @param {token} [options.loneArg] The argument to the function in cases
   *                                  where it was defined using the
   *                                  single-argument shorthand.
   * @param {bool} [options.parsedOpening] Whether the opening parenthesis has
   *                                       already been parsed.
   *
   * @returns {{ arity: number, params: Array.<string>, isSimple: boolean }}
   */
  function functionparams(context, options) {
    var next;
    var paramsIds = [];
    var ident;
    var tokens = [];
    var t;
    var pastDefault = false;
    var pastRest = false;
    var arity = 0;
    var loneArg = options && options.loneArg;
    var hasDestructuring = false;

    if (loneArg && loneArg.identifier === true) {
      state.funct["(scope)"].addParam(loneArg.value, loneArg);
      return { arity: 1, params: [ loneArg.value ], isSimple: true };
    }

    next = state.tokens.next;

    if (!options || !options.parsedOpening) {
      advance("(");
    }

    if (state.tokens.next.id === ")") {
      advance(")");
      return;
    }

    function addParam(addParamArgs) {
      state.funct["(scope)"].addParam.apply(state.funct["(scope)"], addParamArgs);
    }

    for (;;) {
      arity++;
      // are added to the param scope
      var currentParams = [];

      pastRest = spreadrest("rest");

      if (_.includes(["{", "["], state.tokens.next.id)) {
        hasDestructuring = true;
        tokens = destructuringPattern(context);
        for (t in tokens) {
          t = tokens[t];
          if (t.id) {
            paramsIds.push(t.id);
            currentParams.push([t.id, t.token]);
          }
        }
      } else {
        ident = identifier(context);

        if (ident) {
          paramsIds.push(ident);
          currentParams.push([ident, state.tokens.curr]);
        } else {
          // Skip invalid parameter.
          while (!checkPunctuators(state.tokens.next, [",", ")"])) advance();
        }
      }

      // It is valid to have a regular argument after a default argument
      // since undefined can be used for missing parameters. Still warn as it is
      // a possible code smell.
      if (pastDefault) {
        if (state.tokens.next.id !== "=") {
          error("W138", state.tokens.curr);
        }
      }
      if (state.tokens.next.id === "=") {
        if (!state.inES6()) {
          warning("W119", state.tokens.next, "default parameters", "6");
        }

        if (pastRest) {
          error("E062", state.tokens.next);
        }

        advance("=");
        pastDefault = true;
        expression(context, 10);
      }

      // now we have evaluated the default expression, add the variable to the param scope
      currentParams.forEach(addParam);
      if (state.tokens.next.id === ",") {
        if (pastRest) {
          warning("W131", state.tokens.next);
        }
        advance(",");
        checkComma({ allowTrailing: true });
      }

      if (state.tokens.next.id === ")") {
        if (state.tokens.curr.id === "," && !state.inES8()) {
          warning("W119", state.tokens.curr, "Trailing comma in function parameters", "8");
        }

        advance(")", next);
        return {
          arity: arity,
          params: paramsIds,
          isSimple: !hasDestructuring && !pastRest && !pastDefault
        };
      }
    }
  }

  /**
   * Factory function for creating objects used to track statistics of function
   * literals.
   *
   * @param {string} name - the identifier name to associate with the function
   * @param {object} [token] - token responsible for creating the function
   *                           object
   * @param {object} [overwrites] - a collection of properties that should
   *                                override the corresponding default value of
   *                                the new "functor" object
   */
  function functor(name, token, overwrites) {
    var funct = {
      "(name)"      : name,
      "(breakage)"  : 0,
      "(loopage)"   : 0,
      // The strictness of the function body is tracked via a dedicated
      // property (as opposed to via the global `state` object) so that the
      // value can be referenced after the body has been fully parsed (i.e.
      // when validating the identifier used in function declarations and
      // function expressions).
      "(isStrict)"  : "unknown",

      "(global)"    : false,

      "(line)"      : null,
      "(character)" : null,
      "(metrics)"   : null,
      "(statement)" : null,
      "(context)"   : null,
      "(scope)"     : null,
      "(comparray)" : null,
      "(yielded)"   : null,
      "(arrow)"     : null,
      "(async)"     : null,
      "(params)"    : null
    };

    if (token) {
      _.extend(funct, {
        "(line)"     : token.line,
        "(character)": token.character,
        "(metrics)"  : createMetrics(token)
      });
    }

    _.extend(funct, overwrites);

    if (funct["(context)"]) {
      funct["(scope)"] = funct["(context)"]["(scope)"];
      funct["(comparray)"]  = funct["(context)"]["(comparray)"];
    }

    return funct;
  }

  /**
   * Determine if the parser has begun parsing executable code.
   *
   * @param {Token} funct - The current "functor" token
   *
   * @returns {boolean}
   */
  function hasParsedCode(funct) {
    return funct["(global)"] && !funct["(verb)"];
  }

  /**
   * This function is used as both a null-denotation method *and* a
   * left-denotation method, meaning the first parameter is overloaded.
   */
  function doTemplateLiteral(context, leftOrRbp) {
    // ASSERT: this.type === "(template)"
    // jshint validthis: true
    var ctx = this.context;
    var noSubst = this.noSubst;
    var depth = this.depth;
    var left = typeof leftOrRbp === "number" ? null : leftOrRbp;

    if (!noSubst) {
      while (!end()) {
        if (!state.tokens.next.template || state.tokens.next.depth > depth) {
          expression(context, 0); // should probably have different rbp?
        } else {
          // skip template start / middle
          advance();
        }
      }
    }

    return {
      id: "(template)",
      type: "(template)",
      tag: left
    };

    function end() {
      if (state.tokens.curr.template && state.tokens.curr.tail &&
          state.tokens.curr.context === ctx) {
        /* istanbul ignore next */
        return true;
      }
      var complete = (state.tokens.next.template && state.tokens.next.tail &&
                      state.tokens.next.context === ctx);
      if (complete) advance();
      return complete || state.tokens.next.isUnclosed;
    }
  }

  /**
   * Parse a function literal.
   *
   * @param {Number} context The parsing context
   * @param {Object} [options]
   * @param {string} [options.name] The identifier belonging to the function (if
   *                                any)
   * @param {token} [options.statement] The statement that triggered creation
   *                                    of the current function.
   * @param {string} [options.type] If specified, either "generator" or "arrow"
   * @param {token} [options.loneArg] The argument to the function in cases
   *                                  where it was defined using the
   *                                  single-argument shorthand
   * @param {bool} [options.parsedOpening] Whether the opening parenthesis has
   *                                       already been parsed
   * @param {string} [options.classExprBinding] Define a function with this
   *                                            identifier in the new function's
   *                                            scope, mimicking the bahavior of
   *                                            class expression names within
   *                                            the body of member functions.
   */
  function doFunction(context, options) {
    var f, token, name, statement, classExprBinding, isGenerator, isArrow,
      isMethod, ignoreLoopFunc;
    var oldOption = state.option;
    var oldIgnored = state.ignored;
    var isAsync = context & prodParams.preAsync;

    if (options) {
      name = options.name;
      statement = options.statement;
      classExprBinding = options.classExprBinding;
      isGenerator = options.type === "generator";
      isArrow = options.type === "arrow";
      isMethod = options.isMethod;
      ignoreLoopFunc = options.ignoreLoopFunc;
    }

    context &= ~prodParams.noin;
    context &= ~prodParams.tryClause;

    if (isAsync) {
      context |= prodParams.async;
    } else {
      context &= ~prodParams.async;
    }

    if (isGenerator) {
      context |= prodParams.yield;
    } else if (!isArrow) {
      context &= ~prodParams.yield;
    }
    context &= ~prodParams.preAsync;

    state.option = Object.create(state.option);
    state.ignored = Object.create(state.ignored);

    state.funct = functor(name || state.nameStack.infer(), state.tokens.next, {
      "(statement)": statement,
      "(context)":   state.funct,
      "(arrow)":     isArrow,
      "(method)":    isMethod,
      "(async)":     isAsync
    });

    f = state.funct;
    token = state.tokens.curr;

    functions.push(state.funct);

    // So that the function is available to itself and referencing itself is not
    // seen as a closure, add the function name to a new scope, but do not
    // test for unused (unused: false)
    // it is a new block scope so that params can override it, it can be block scoped
    // but declarations inside the function don't cause already declared error
    state.funct["(scope)"].stack("functionouter");
    var internallyAccessibleName = !isMethod && (name || classExprBinding);
    if (internallyAccessibleName) {
      state.funct["(scope)"].block.add(internallyAccessibleName,
        classExprBinding ? "class" : "function", state.tokens.curr, false);
    }

    if (!isArrow) {
      state.funct["(scope)"].funct.add("arguments", "var", token, false);
    }

    // create the param scope (params added in functionparams)
    state.funct["(scope)"].stack("functionparams");

    var paramsInfo = functionparams(context, options);

    if (paramsInfo) {
      state.funct["(params)"] = paramsInfo.params;
      state.funct["(hasSimpleParams)"] = paramsInfo.isSimple;
      state.funct["(metrics)"].arity = paramsInfo.arity;
      state.funct["(metrics)"].verifyMaxParametersPerFunction();
    } else {
      state.funct["(params)"] = [];
      state.funct["(metrics)"].arity = 0;
      state.funct["(hasSimpleParams)"] = true;
    }

    if (isArrow) {
      context &= ~prodParams.yield;

      if (!state.inES6(true)) {
        warning("W119", state.tokens.curr, "arrow function syntax (=>)", "6");
      }

      if (!options.loneArg) {
        advance("=>");
      }
    }

    block(context, false, true, true, isArrow);

    if (!state.option.noyield && isGenerator && !state.funct["(yielded)"]) {
      warning("W124", state.tokens.curr);
    }

    state.funct["(metrics)"].verifyMaxStatementsPerFunction();
    state.funct["(metrics)"].verifyMaxComplexityPerFunction();
    state.funct["(unusedOption)"] = state.option.unused;
    state.option = oldOption;
    state.ignored = oldIgnored;
    state.funct["(last)"] = state.tokens.curr.line;
    state.funct["(lastcharacter)"] = state.tokens.curr.character;

    // unstack the params scope
    state.funct["(scope)"].unstack(); // also does usage and label checks

    // unstack the function outer stack
    state.funct["(scope)"].unstack();

    state.funct = state.funct["(context)"];

    if (!ignoreLoopFunc && !state.option.loopfunc && state.funct["(loopage)"]) {
      // If the function we just parsed accesses any non-local variables
      // trigger a warning. Otherwise, the function is safe even within
      // a loop.
      if (f["(outerMutables)"]) {
        warning("W083", token, f["(outerMutables)"].join(", "));
      }
    }

    return f;
  }

  function createMetrics(functionStartToken) {
    return {
      statementCount: 0,
      nestedBlockDepth: -1,
      ComplexityCount: 1,
      arity: 0,

      verifyMaxStatementsPerFunction: function() {
        if (state.option.maxstatements &&
          this.statementCount > state.option.maxstatements) {
          warning("W071", functionStartToken, this.statementCount);
        }
      },

      verifyMaxParametersPerFunction: function() {
        if (_.isNumber(state.option.maxparams) &&
          this.arity > state.option.maxparams) {
          warning("W072", functionStartToken, this.arity);
        }
      },

      verifyMaxNestedBlockDepthPerFunction: function() {
        if (state.option.maxdepth &&
          this.nestedBlockDepth > 0 &&
          this.nestedBlockDepth === state.option.maxdepth + 1) {
          warning("W073", null, this.nestedBlockDepth);
        }
      },

      verifyMaxComplexityPerFunction: function() {
        var max = state.option.maxcomplexity;
        var cc = this.ComplexityCount;
        if (max && cc > max) {
          warning("W074", functionStartToken, cc);
        }
      }
    };
  }

  function increaseComplexityCount() {
    state.funct["(metrics)"].ComplexityCount += 1;
  }

  // Parse assignments that were found instead of conditionals.
  // For example: if (a = 1) { ... }

  function checkCondAssignment(token) {
    if (!token || token.paren) {
      return;
    }

    if (token.id === ",") {
      checkCondAssignment(token.right);
      return;
    }

    switch (token.id) {
    case "=":
    case "+=":
    case "-=":
    case "*=":
    case "%=":
    case "&=":
    case "|=":
    case "^=":
    case "/=":
      if (!state.option.boss) {
        warning("W084", token);
      }
    }
  }

  /**
   * Validate the properties defined within an object literal or class body.
   * See the `saveAccessor` and `saveProperty` functions for more detail.
   *
   * @param {object} props - Collection of objects describing the properties
   *                         encountered
   */
  function checkProperties(props) {
    // Check for lonely setters if in the ES5 mode.
    if (state.inES5()) {
      for (var name in props) {
        if (props[name] && props[name].setterToken && !props[name].getterToken &&
          !props[name].static) {
          warning("W078", props[name].setterToken);
        }
      }
    }
  }

  function metaProperty(context, name, c) {
    if (checkPunctuator(state.tokens.next, ".")) {
      var left = state.tokens.curr.id;
      advance(".");
      var id = identifier(context);
      state.tokens.curr.isMetaProperty = true;
      if (name !== id) {
        error("E057", state.tokens.prev, left, id);
      } else {
        c();
      }
      return state.tokens.curr;
    }
  }

//object literals
  (function(x) {
    x.nud = function(context) {
      var b, f, i, params, t, isGeneratorMethod = false, nextVal;
      var props = Object.create(null); // All properties, including accessors
      var isAsyncMethod = false;

      b = !sameLine(state.tokens.curr, state.tokens.next);
      if (b) {
        indent += state.option.indent;
        if (state.tokens.next.from === indent + state.option.indent) {
          /* istanbul ignore next */
          indent += state.option.indent;
        }
      }

      var blocktype = lookupBlockType();
      if (blocktype.isDestAssign) {
        this.destructAssign = destructuringPattern(context, {
            openingParsed: true,
            assignment: true
          });
        return this;
      }
      state.inObjectBody = true;
      for (;;) {
        if (state.tokens.next.id === "}") {
          break;
        }

        nextVal = state.tokens.next.value;
        if (state.tokens.next.identifier &&
            (peekIgnoreEOL().id === "," || peekIgnoreEOL().id === "}")) {
          if (!state.inES6()) {
            warning("W104", state.tokens.next, "object short notation", "6");
          }
          t = expression(context, 10);
          i = t && t.value;
          if (t) {
            saveProperty(props, i, t);
          }

        } else if (peek().id !== ":" && (nextVal === "get" || nextVal === "set")) {
          advance(nextVal);

          if (!state.inES5()) {
            error("E034");
          }

          if (state.tokens.next.id === "[") {
            i = computedPropertyName(context);
          } else {
            i = propertyName(context);

            // ES6 allows for get() {...} and set() {...} method
            // definition shorthand syntax, so we don't produce an error
            // if linting ECMAScript 6 code.
            if (!i && !state.inES6()) {
              error("E035");
            }
          }

          // We don't want to save this getter unless it's an actual getter
          // and not an ES6 concise method
          if (i) {
            saveAccessor(nextVal, props, i, state.tokens.curr);
          }

          t = state.tokens.next;
          f = doFunction(context, { isMethod: true });
          params = f["(params)"];

          // Don't warn about getter/setter pairs if this is an ES6 concise method
          if (nextVal === "get" && i && params.length) {
            warning("W076", t, params[0], i);
          } else if (nextVal === "set" && i && f["(metrics)"].arity !== 1) {
            warning("W077", t, i);
          }

        } else if (spreadrest("spread")) {
          if (!state.inES9()) {
            warning("W119", state.tokens.next, "object spread property", "9");
          }

          expression(context, 10);
        } else {
          if (state.tokens.next.id === "async" && !checkPunctuators(peek(), ["(", ":"])) {
            if (!state.inES8()) {
              warning("W119", state.tokens.next, "async functions", "8");
            }

            isAsyncMethod = true;
            advance();

            nolinebreak(state.tokens.curr);
          } else {
            isAsyncMethod = false;
          }

          if (state.tokens.next.value === "*" && state.tokens.next.type === "(punctuator)") {
            if (isAsyncMethod && !state.inES9()) {
              warning("W119", state.tokens.next, "async generators", "9");
            } else if (!state.inES6()) {
              warning("W104", state.tokens.next, "generator functions", "6");
            }

            advance("*");
            isGeneratorMethod = true;
          } else {
            isGeneratorMethod = false;
          }

          if (state.tokens.next.id === "[") {
            i = computedPropertyName(context);
            state.nameStack.set(i);
          } else {
            state.nameStack.set(state.tokens.next);
            i = propertyName(context);
            saveProperty(props, i, state.tokens.next);

            if (typeof i !== "string") {
              break;
            }
          }

          if (state.tokens.next.value === "(") {
            if (!state.inES6()) {
              warning("W104", state.tokens.curr, "concise methods", "6");
            }

            doFunction(isAsyncMethod ? context | prodParams.preAsync : context, {
              isMethod: true,
              type: isGeneratorMethod ? "generator" : null
            });
          } else {
            advance(":");
            expression(context, 10);
          }
        }

        countMember(i);

        if (state.tokens.next.id === ",") {
          advance(",");
          checkComma({ allowTrailing: true, property: true });
          if (state.tokens.next.id === ",") {
            /* istanbul ignore next */
            warning("W070", state.tokens.curr);
          } else if (state.tokens.next.id === "}" && !state.inES5()) {
            warning("W070", state.tokens.curr);
          }
        } else {
          if (state.option.trailingcomma && state.inES5()) {
            warningAt("W140", state.tokens.curr.line, state.tokens.curr.character);
          }
          break;
        }
      }
      if (b) {
        indent -= state.option.indent;
      }
      advance("}", this);

      checkProperties(props);
      state.inObjectBody = false;

      return this;
    };
    x.fud = function() {
      /* istanbul ignore next */
      error("E036", state.tokens.curr);
    };
  }(delim("{")));

  function destructuringPattern(context, options) {
    var isAssignment = options && options.assignment;

    context &= ~prodParams.noin;

    if (!state.inES6()) {
      warning("W104", state.tokens.curr,
        isAssignment ? "destructuring assignment" : "destructuring binding", "6");
    }

    return destructuringPatternRecursive(context, options);
  }

  function destructuringPatternRecursive(context, options) {
    var ids, idx;
    var identifiers = [];
    var openingParsed = options && options.openingParsed;
    var isAssignment = options && options.assignment;
    var recursiveOptions = isAssignment ? { assignment: isAssignment } : null;
    var firstToken = openingParsed ? state.tokens.curr : state.tokens.next;

    var nextInnerDE = function() {
      var ident;
      if (checkPunctuators(state.tokens.next, ["[", "{"])) {
        ids = destructuringPatternRecursive(context, recursiveOptions);
        for (idx = 0; idx < ids.length; idx++) {
          identifiers.push({ id: ids[idx].id, token: ids[idx].token });
        }
      } else if (checkPunctuator(state.tokens.next, ",")) {
        identifiers.push({ id: null, token: state.tokens.curr });
      } else if (checkPunctuator(state.tokens.next, "(")) {
        advance("(");
        nextInnerDE();
        advance(")");
      } else {
        if (isAssignment) {
          var assignTarget = expression(context, 20);
          if (assignTarget) {
            checkLeftSideAssign(context, assignTarget);

            // if the target was a simple identifier, add it to the list to return
            if (assignTarget.identifier) {
              ident = assignTarget.value;
            }
          }
        } else {
          ident = identifier(context);
        }
        if (ident) {
          identifiers.push({ id: ident, token: state.tokens.curr });
        }
      }
    };

    var assignmentProperty = function(context) {
      var id, expr;

      if (checkPunctuator(state.tokens.next, "[")) {
        advance("[");
        expression(context, 10);
        advance("]");
        advance(":");
        nextInnerDE();
      } else if (state.tokens.next.id === "(string)" ||
                 state.tokens.next.id === "(number)") {
        advance();
        advance(":");
        nextInnerDE();
      } else {
        // this id will either be the property name or the property name and the assigning identifier
        var isRest = spreadrest("rest");

        if (isRest) {
          if (!state.inES9()) {
            warning("W119", state.tokens.next, "object rest property", "9");
          }

          // Due to visual symmetry with the array rest property (and the early
          // design of the language feature), developers may mistakenly assume
          // any expression is valid in this position. If the next token is not
          // an identifier, attempt to parse an expression and issue an error.
          // order to recover more gracefully from this condition.
          if (state.tokens.next.type === "(identifier)") {
            id = identifier(context);
          } else {
            expr = expression(context, 10);
            error("E030", expr, expr.value);
          }
        } else {
          id = identifier(context);
        }

        if (!isRest && checkPunctuator(state.tokens.next, ":")) {
          advance(":");
          nextInnerDE();
        } else if (id) {
          // in this case we are assigning (not declaring), so check assignment
          if (isAssignment) {
            checkLeftSideAssign(context, state.tokens.curr);
          }
          identifiers.push({ id: id, token: state.tokens.curr });
        }

        if (isRest && checkPunctuator(state.tokens.next, ",")) {
          warning("W130", state.tokens.next);
        }
      }
    };

    var id, value;
    if (checkPunctuator(firstToken, "[")) {
      if (!openingParsed) {
        advance("[");
      }
      if (checkPunctuator(state.tokens.next, "]")) {
        warning("W137", state.tokens.curr);
      }
      var element_after_rest = false;
      while (!checkPunctuator(state.tokens.next, "]")) {
        var isRest = spreadrest("rest");

        nextInnerDE();

        if (isRest && !element_after_rest &&
            checkPunctuator(state.tokens.next, ",")) {
          warning("W130", state.tokens.next);
          element_after_rest = true;
        }
        if (!isRest && checkPunctuator(state.tokens.next, "=")) {
          if (checkPunctuator(state.tokens.prev, "...")) {
            /* istanbul ignore next */
            advance("]");
          } else {
            advance("=");
          }
          id = state.tokens.prev;
          value = expression(context, 10);
          if (value && value.identifier && value.value === "undefined") {
            warning("W080", id, id.value);
          }
        }
        if (!checkPunctuator(state.tokens.next, "]")) {
          advance(",");
        }
      }
      advance("]");
    } else if (checkPunctuator(firstToken, "{")) {

      if (!openingParsed) {
        advance("{");
      }
      if (checkPunctuator(state.tokens.next, "}")) {
        warning("W137", state.tokens.curr);
      }
      while (!checkPunctuator(state.tokens.next, "}")) {
        assignmentProperty(context);
        if (checkPunctuator(state.tokens.next, "=")) {
          advance("=");
          id = state.tokens.prev;
          value = expression(context, 10);
          if (value && value.identifier && value.value === "undefined") {
            warning("W080", id, id.value);
          }
        }
        if (!checkPunctuator(state.tokens.next, "}")) {
          advance(",");
          if (checkPunctuator(state.tokens.next, "}")) {
            // Trailing comma
            // ObjectBindingPattern: { BindingPropertyList , }
            break;
          }
        }
      }
      advance("}");
    }
    return identifiers;
  }

  function destructuringPatternMatch(tokens, value) {
    var first = value.first;

    if (!first)
      return;

    _.zip(tokens, Array.isArray(first) ? first : [ first ]).forEach(function(val) {
      var token = val[0];
      var value = val[1];

      if (token && value)
        token.first = value;
      else if (token && token.first && !value)
        /* istanbul ignore next */
        warning("W080", token.first, token.first.value);
    });
  }

  function blockVariableStatement(type, statement, context) {
    // used for both let and const statements

    var noin = context & prodParams.noin;
    var isLet = type === "let";
    var isConst = type === "const";
    var tokens, lone, value, letblock;

    if (!state.inES6()) {
      warning("W104", state.tokens.curr, type, "6");
    }

    if (isLet && isMozillaLet()) {
      advance("(");
      state.funct["(scope)"].stack();
      letblock = true;
      statement.declaration = false;
    }

    statement.first = [];
    for (;;) {
      var names = [];
      if (_.includes(["{", "["], state.tokens.next.value)) {
        tokens = destructuringPattern(context);
        lone = false;
      } else {
        tokens = [ { id: identifier(context), token: state.tokens.curr } ];
        lone = true;
      }

      // A `const` declaration without an initializer is permissible within the
      // head of for-in and for-of statements. If this binding list is being
      // parsed as part of a `for` statement of any kind, allow the initializer
      // to be omitted. Although this may erroneously allow such forms from
      // "C-style" `for` statements (i.e. `for (const x;;) {}`, the `for`
      // statement logic includes dedicated logic to issue the error for such
      // cases.
      if (!noin && isConst && state.tokens.next.id !== "=") {
        warning("E012", state.tokens.curr, state.tokens.curr.value);
      }

      for (var t in tokens) {
        if (tokens.hasOwnProperty(t)) {
          t = tokens[t];

          // It is a Syntax Error if the BoundNames of BindingList contains
          // "let".
          if (t.id === "let") {
            /* istanbul ignore next */
            warning("W024", t.token, t.id);
          }

          if (state.funct["(scope)"].block.isGlobal()) {
            if (predefined[t.id] === false) {
              warning("W079", t.token, t.id);
            }
          }
          if (t.id) {
            state.funct["(scope)"].addbinding(t.id, {
              type: type,
              token: t.token });
            names.push(t.token);
          }
        }
      }

      if (state.tokens.next.id === "=") {
        statement.hasInitializer = true;

        advance("=");
        if (!noin && peek(0).id === "=" && state.tokens.next.identifier) {
          warning("W120", state.tokens.next, state.tokens.next.value);
        }
        var id = state.tokens.prev;
        value = expression(context, 10);
        if (value) {
          if (!isConst && value.identifier && value.value === "undefined") {
            warning("W080", id, id.value);
          }
          if (!lone) {
            destructuringPatternMatch(names, value);
          }
        }
      }

      // Bindings are not immediately initialized in for-in and for-of
      // statements. As with `const` initializers (described above), the `for`
      // statement parsing logic includes
      if (state.tokens.next.value !== "in" && state.tokens.next.value !== "of") {
        for (t in tokens) {
          if (tokens.hasOwnProperty(t)) {
            t = tokens[t];
            state.funct["(scope)"].initialize(t.id);
          }
        }
      }

      statement.first = statement.first.concat(names);

      if (state.tokens.next.id !== ",") {
        break;
      }

      statement.hasComma = true;
      advance(",");
      checkComma();
    }
    if (letblock) {
      advance(")");
      block(context, true, true);
      statement.block = true;
      state.funct["(scope)"].unstack();
    }

    return statement;
  }

  var conststatement = stmt("const", function(context) {
    return blockVariableStatement("const", this, context);
  });
  conststatement.exps = true;
  conststatement.declaration = true;


  /**
   * Determine if the current `let` token designates the beginning of a "let
   * block" or "let expression" as implemented in the Mozilla SpiderMonkey
   * engine.
   *
   * This function will only return `true` if Mozilla extensions have been
   * enabled. It would be preferable to detect the language feature regardless
   * of the parser's state because this would allow JSHint to instruct users to
   * enable the `moz` option where necessary. This is not possible because the
   * language extension is not compatible with standard JavaScript. For
   * example, the following program code may describe a "let block" or a
   * function invocation:
   *
   *     let(x)
   *     {
   *       typeof x;
   *     }
   *
   * @returns {boolean}
   */
  function isMozillaLet() {
    return state.tokens.next.id === "(" && state.inMoz();
  }
  var letstatement = stmt("let", function(context) {
    return blockVariableStatement("let", this, context);
  });
  letstatement.nud = function(context, rbp) {
    if (isMozillaLet()) {
      // create a new block scope we use only for the current expression
      state.funct["(scope)"].stack();
      advance("(");
      state.tokens.prev.fud(context);
      advance(")");
      expression(context, rbp);
      state.funct["(scope)"].unstack();
    } else {
      this.exps = false;
      return state.syntax["(identifier)"].nud.apply(this, arguments);
    }
  };
  letstatement.meta = { es5: true, isFutureReservedWord: false, strictOnly: true };
  letstatement.exps = true;
  letstatement.declaration = true;
  letstatement.useFud = function(context) {
    var next = state.tokens.next;
    var nextIsBindingName;

    if (this.line !== next.line && !state.inES6()) {
      return false;
    }

    // JSHint generally interprets `let` as a reserved word even though it is
    // not considered as such by the ECMAScript specification because doing so
    // simplifies parsing logic. It is special-cased here so that code such as
    //
    //     let
    //     let
    //
    // is correctly interpreted as an invalid LexicalBinding. (Without this
    // consideration, the code above would be parsed as two
    // IdentifierReferences.)
    nextIsBindingName = next.identifier && (!isReserved(context, next) ||
      next.id === "let");

    return nextIsBindingName || checkPunctuators(next, ["{", "["]) ||
      isMozillaLet();
  };

  var varstatement = stmt("var", function(context) {
    var noin = context & prodParams.noin;
    var tokens, lone, value, id;

    this.first = [];
    for (;;) {
      var names = [];
      if (_.includes(["{", "["], state.tokens.next.value)) {
        tokens = destructuringPattern(context);
        lone = false;
      } else {
        tokens = [];
        id = identifier(context);

        if (id) {
          tokens.push({ id: id, token: state.tokens.curr });
        }

        lone = true;
      }

      if (state.option.varstmt) {
        warning("W132", this);
      }


      for (var t in tokens) {
        if (tokens.hasOwnProperty(t)) {
          t = tokens[t];
          if (state.funct["(global)"] && !state.impliedClosure()) {
            if (predefined[t.id] === false) {
              warning("W079", t.token, t.id);
            } else if (state.option.futurehostile === false) {
              if ((!state.inES5() && vars.ecmaIdentifiers[5][t.id] === false) ||
                (!state.inES6() && vars.ecmaIdentifiers[6][t.id] === false)) {
                warning("W129", t.token, t.id);
              }
            }
          }
          if (t.id) {
            state.funct["(scope)"].addbinding(t.id, {
              type: "var",
              token: t.token });

            names.push(t.token);
          }
        }
      }

      if (state.tokens.next.id === "=") {
        this.hasInitializer = true;

        state.nameStack.set(state.tokens.curr);

        advance("=");
        if (peek(0).id === "=" && state.tokens.next.identifier) {
          if (!noin &&
              !state.funct["(params)"] ||
              state.funct["(params)"].indexOf(state.tokens.next.value) === -1) {
            warning("W120", state.tokens.next, state.tokens.next.value);
          }
        }
        id = state.tokens.prev;
        value = expression(context, 10);
        if (value) {
          if (!state.funct["(loopage)"] && value.identifier &&
            value.value === "undefined") {
            warning("W080", id, id.value);
          }
          if (!lone) {
            destructuringPatternMatch(names, value);
          }
        }
      }

      this.first = this.first.concat(names);

      if (state.tokens.next.id !== ",") {
        break;
      }
      this.hasComma = true;
      advance(",");
      checkComma();
    }

    return this;
  });
  varstatement.exps = true;

  blockstmt("function", function(context) {
    var inexport = context & prodParams.export;
    var generator = false;
    var isAsync = context & prodParams.preAsync;
    var labelType = "";

    if (isAsync) {
      labelType = "async ";
    }

    if (state.tokens.next.value === "*") {
      if (isAsync && !state.inES9()) {
        warning("W119", state.tokens.prev, "async generators", "9");
      } else if (!isAsync && !state.inES6(true)) {
        warning("W119", state.tokens.next, "function*", "6");
      }

      advance("*");
      labelType += "generator ";
      generator = true;
    }

    labelType += "function";

    if (inblock) {
      warning("W082", state.tokens.curr);
    }
    this.name = optionalidentifier(context) ? state.tokens.curr : null;

    if (!this.name) {
      if (!inexport) {
        warning("W025");
      }
    } else {
      state.funct["(scope)"].addbinding(this.name.value, {
        type: labelType,
        token: state.tokens.curr,
        initialized: true });
    }

    var f = doFunction(context, {
      name: this.name && this.name.value,
      statement: this,
      type: generator ? "generator" : null,
      ignoreLoopFunc: inblock // a declaration may already have warned
    });

    // If the function declaration is strict because the surrounding code is
    // strict, the invalid name will trigger E008 when the scope manager
    // attempts to create a binding in the strict environment record. An error
    // should only be signaled here when the function itself enables strict
    // mode (the scope manager will not report an error because a declaration
    // does not introduce a binding into the function's environment record).
    var enablesStrictMode = f["(isStrict)"] && !state.isStrict();
    if (this.name && (f["(name)"] === "arguments" || f["(name)"] === "eval") &&
      enablesStrictMode) {
      error("E008", this.name);
    }

    // Although the parser correctly recognizes the statement boundary in this
    // condition, it's support for the invalid "empty grouping" expression
    // makes it tolerant of productions such as `function f() {}();`.
    if (state.tokens.next.id === "(" && peek().id === ")" && peek(1).id !== "=>" &&
      state.tokens.next.line === state.tokens.curr.line) {
      error("E039");
    }
    return this;
  }).declaration = true;

  prefix("function", function(context) {
    var generator = false;
    var isAsync = context & prodParams.preAsync;

    if (state.tokens.next.value === "*") {
      if (isAsync && !state.inES9()) {
        warning("W119", state.tokens.prev, "async generators", "9");
      } else if (!isAsync && !state.inES6(true)) {
        warning("W119", state.tokens.curr, "function*", "6");
      }

      advance("*");
      generator = true;
    }

    // This context modification restricts the use of `await` as the optional
    // BindingIdentifier in async function expressions.
    this.name = optionalidentifier(isAsync ? context | prodParams.async : context) ?
      state.tokens.curr : null;

    var f = doFunction(context, {
      name: this.name && this.name.value,
      type: generator ? "generator" : null
    });

    if (generator && this.name && this.name.value === "yield") {
      error("E024", this.name, "yield");
    }

    if (this.name && (f["(name)"] === "arguments" || f["(name)"] === "eval") &&
      f["(isStrict)"]) {
      error("E008", this.name);
    }

    return this;
  });

  blockstmt("if", function(context) {
    var t = state.tokens.next;
    increaseComplexityCount();
    advance("(");
    var expr = expression(context, 0);

    if (!expr) {
      quit("E041", this);
    }

    checkCondAssignment(expr);

    // When the if is within a for-in loop, check if the condition
    // starts with a negation operator
    var forinifcheck = null;
    if (state.option.forin && state.forinifcheckneeded) {
      state.forinifcheckneeded = false; // We only need to analyze the first if inside the loop
      forinifcheck = state.forinifchecks[state.forinifchecks.length - 1];
      if (expr.type === "(punctuator)" && expr.value === "!") {
        forinifcheck.type = "(negative)";
      } else {
        forinifcheck.type = "(positive)";
      }
    }

    advance(")", t);
    var s = block(context, true, true);

    // When the if is within a for-in loop and the condition has a negative form,
    // check if the body contains nothing but a continue statement
    if (forinifcheck && forinifcheck.type === "(negative)") {
      if (s && s[0] && s[0].type === "(identifier)" && s[0].value === "continue") {
        forinifcheck.type = "(negative-with-continue)";
      }
    }

    if (state.tokens.next.id === "else") {
      advance("else");
      if (state.tokens.next.id === "if" || state.tokens.next.id === "switch") {
        statement(context);
      } else {
        block(context, true, true);
      }
    }
    return this;
  });

  blockstmt("try", function(context) {
    var b;
    var hasParameter = false;

    function catchParameter() {
      advance("(");

      if (checkPunctuators(state.tokens.next, ["[", "{"])) {
        var tokens = destructuringPattern(context);
        _.each(tokens, function(token) {
          if (token.id) {
            state.funct["(scope)"].addParam(token.id, token.token, "exception");
          }
        });
      } else if (state.tokens.next.type !== "(identifier)") {
        warning("E030", state.tokens.next, state.tokens.next.value);
      } else {
        // only advance if an identifier is present. This allows JSHint to
        // recover from the case where no value is specified.
        state.funct["(scope)"].addParam(identifier(context), state.tokens.curr, "exception");
      }

      if (state.tokens.next.value === "if") {
        if (!state.inMoz()) {
          warning("W118", state.tokens.curr, "catch filter");
        }
        advance("if");
        expression(context, 0);
      }

      advance(")");
    }

    block(context | prodParams.tryClause, true);

    while (state.tokens.next.id === "catch") {
      increaseComplexityCount();
      if (b && (!state.inMoz())) {
        warning("W118", state.tokens.next, "multiple catch blocks");
      }
      advance("catch");
      if (state.tokens.next.id !== "{") {
        state.funct["(scope)"].stack("catchparams");
        hasParameter = true;
        catchParameter();
      } else if (!state.inES10()) {
        warning("W119", state.tokens.curr, "optional catch binding", "10");
      }
      block(context, false);

      if (hasParameter) {
        state.funct["(scope)"].unstack();
        hasParameter = false;
      }
      b = true;
    }

    if (state.tokens.next.id === "finally") {
      advance("finally");
      block(context, true);
      return;
    }

    if (!b) {
      error("E021", state.tokens.next, "catch", state.tokens.next.value);
    }

    return this;
  });

  blockstmt("while", function(context) {
    var t = state.tokens.next;
    state.funct["(breakage)"] += 1;
    state.funct["(loopage)"] += 1;
    increaseComplexityCount();
    advance("(");
    checkCondAssignment(expression(context, 0));
    advance(")", t);
    block(context, true, true);
    state.funct["(breakage)"] -= 1;
    state.funct["(loopage)"] -= 1;
    return this;
  }).labelled = true;

  blockstmt("with", function(context) {
    var t = state.tokens.next;
    if (state.isStrict()) {
      error("E010", state.tokens.curr);
    } else if (!state.option.withstmt) {
      warning("W085", state.tokens.curr);
    }

    advance("(");
    expression(context, 0);
    advance(")", t);
    block(context, true, true);

    return this;
  });

  blockstmt("switch", function(context) {
    var t = state.tokens.next;
    var g = false;
    var noindent = false;
    var seenCase = false;

    state.funct["(breakage)"] += 1;
    advance("(");
    checkCondAssignment(expression(context, 0));
    advance(")", t);
    t = state.tokens.next;
    advance("{");
    state.funct["(scope)"].stack();

    if (state.tokens.next.from === indent)
      noindent = true;

    if (!noindent)
      indent += state.option.indent;

    for (;;) {
      switch (state.tokens.next.id) {
      case "case":
        switch (state.funct["(verb)"]) {
        case "yield":
        case "break":
        case "case":
        case "continue":
        case "return":
        case "switch":
        case "throw":
          break;
        case "default":
          if (state.option.leanswitch) {
            warning("W145", state.tokens.next);
          }

          break;
        default:
          // You can tell JSHint that you don't use break intentionally by
          // adding a comment /* falls through */ on a line just before
          // the next `case`.
          if (!state.tokens.curr.caseFallsThrough) {
            warning("W086", state.tokens.curr, "case");
          }
        }

        advance("case");
        expression(context, 0);
        seenCase = true;
        increaseComplexityCount();
        g = true;
        advance(":");
        state.funct["(verb)"] = "case";
        break;
      case "default":
        switch (state.funct["(verb)"]) {
        case "yield":
        case "break":
        case "continue":
        case "return":
        case "throw":
          break;
        case "case":
          if (state.option.leanswitch) {
            warning("W145", state.tokens.curr);
          }

          break;
        default:
          // Do not display a warning if 'default' is the first statement or if
          // there is a special /* falls through */ comment.
          if (seenCase && !state.tokens.curr.caseFallsThrough) {
            warning("W086", state.tokens.curr, "default");
          }
        }

        advance("default");
        g = true;
        advance(":");
        state.funct["(verb)"] = "default";
        break;
      case "}":
        if (!noindent)
          indent -= state.option.indent;

        advance("}", t);
        state.funct["(scope)"].unstack();
        state.funct["(breakage)"] -= 1;
        state.funct["(verb)"] = undefined;
        return;
      /* istanbul ignore next */
      case "(end)":
        error("E023", state.tokens.next, "}");
        return;
      default:
        indent += state.option.indent;
        if (g) {
          switch (state.tokens.curr.id) {
          /* istanbul ignore next */
          case ",":
            error("E040");
            return;
          case ":":
            g = false;
            statements(context);
            break;
          /* istanbul ignore next */
          default:
            error("E025", state.tokens.curr);
            return;
          }
        } else {
          /* istanbul ignore else */
          if (state.tokens.curr.id === ":") {
            advance(":");
            error("E024", state.tokens.curr, ":");
            statements(context);
          } else {
            error("E021", state.tokens.next, "case", state.tokens.next.value);
            return;
          }
        }
        indent -= state.option.indent;
      }
    }
  }).labelled = true;

  stmt("debugger", function() {
    if (!state.option.debug) {
      warning("W087", this);
    }
    return this;
  }).exps = true;

  (function() {
    var x = stmt("do", function(context) {
      state.funct["(breakage)"] += 1;
      state.funct["(loopage)"] += 1;
      increaseComplexityCount();

      this.first = block(context, true, true);
      advance("while");
      var t = state.tokens.next;
      advance("(");
      checkCondAssignment(expression(context, 0));
      advance(")", t);
      state.funct["(breakage)"] -= 1;
      state.funct["(loopage)"] -= 1;
      return this;
    });
    x.labelled = true;
    x.exps = true;
  }());

  blockstmt("for", function(context) {
    var s, t = state.tokens.next;
    var letscope = false;
    var isAsync = false;
    var foreachtok = null;

    if (t.value === "each") {
      foreachtok = t;
      advance("each");
      if (!state.inMoz()) {
        warning("W118", state.tokens.curr, "for each");
      }
    }

    if (state.tokens.next.identifier && state.tokens.next.value === "await") {
      advance("await");
      isAsync = true;

      if (!(context & prodParams.async)) {
        error("E024", state.tokens.curr, "await");
      } else if (!state.inES9()) {
        warning("W119", state.tokens.curr, "asynchronous iteration", "9");
      }
    }

    increaseComplexityCount();
    advance("(");

    // what kind of for(…) statement it is? for(…of…)? for(…in…)? for(…;…;…)?
    var nextop; // contains the token of the "in" or "of" operator
    var comma; // First comma punctuator at level 0
    var initializer; // First initializer at level 0
    var bindingPower;
    var targets;
    var target;
    var decl;
    var afterNext = peek();

    var headContext = context | prodParams.noin;

    if (state.tokens.next.id === "var") {
      advance("var");
      decl = state.tokens.curr.fud(headContext);
      comma = decl.hasComma ? decl : null;
      initializer = decl.hasInitializer ? decl : null;
    } else if (state.tokens.next.id === "const" ||
      // The "let" keyword only signals a lexical binding if it is followed by
      // an identifier, `{`, or `[`. Otherwise, it should be parsed as an
      // IdentifierReference (i.e. in a subsquent branch).
      (state.tokens.next.id === "let" &&
        ((afterNext.identifier && afterNext.id !== "in") ||
         checkPunctuators(afterNext, ["{", "["])))) {
      advance(state.tokens.next.id);
      // create a new block scope
      letscope = true;
      state.funct["(scope)"].stack();
      decl = state.tokens.curr.fud(headContext);
      comma = decl.hasComma ? decl : null;
      initializer = decl.hasInitializer ? decl : null;
    } else if (!checkPunctuator(state.tokens.next, ";")) {
      targets = [];

      while (state.tokens.next.value !== "in" &&
        state.tokens.next.value !== "of" &&
        !checkPunctuator(state.tokens.next, ";")) {

        if (checkPunctuators(state.tokens.next, ["{", "["])) {
          destructuringPattern(headContext, { assignment: true })
            .forEach(function(elem) {
              this.push(elem.token);
            }, targets);
          if (checkPunctuator(state.tokens.next, "=")) {
            advance("=");
            initializer = state.tokens.curr;
            expression(headContext, 10);
          }
        } else {
          target = expression(headContext, 10);

          if (target) {
            if (target.type === "(identifier)") {
              targets.push(target);
            } else if (checkPunctuator(target, "=")) {
              initializer = target;
              targets.push(target);
            }
          }
        }

        if (checkPunctuator(state.tokens.next, ",")) {
          advance(",");

          if (!comma) {
            comma = state.tokens.curr;
          }
        }
      }

      //checkLeftSideAssign(target, nextop);

      // In the event of a syntax error, do not issue warnings regarding the
      // implicit creation of bindings.
      if (!initializer && !comma) {
        targets.forEach(function(token) {
          if (!state.funct["(scope)"].has(token.value)) {
            warning("W088", token, token.value);
          }
        });
      }
    }

    nextop = state.tokens.next;

    if (isAsync && nextop.value !== "of") {
      error("E066", nextop);
    }

    // if we're in a for (… in|of …) statement
    if (_.includes(["in", "of"], nextop.value)) {
      if (nextop.value === "of") {
        bindingPower = 20;

        if (!state.inES6()) {
          warning("W104", nextop, "for of", "6");
        }
      } else {
        bindingPower = 0;
      }
      if (comma) {
        error("W133", comma, nextop.value, "more than one ForBinding");
      }
      if (initializer) {
        error("W133", initializer, nextop.value, "initializer is forbidden");
      }
      if (target && !comma && !initializer) {
        checkLeftSideAssign(context, target, nextop);
      }

      advance(nextop.value);

      // The binding power is variable because for-in statements accept any
      // Expression in this position, while for-of statements are limited to
      // AssignmentExpressions. For example:
      //
      //     for ( LeftHandSideExpression in Expression ) Statement
      //     for ( LeftHandSideExpression of AssignmentExpression ) Statement
      expression(context, bindingPower);
      advance(")", t);

      if (nextop.value === "in" && state.option.forin) {
        state.forinifcheckneeded = true;

        if (state.forinifchecks === undefined) {
          state.forinifchecks = [];
        }

        // Push a new for-in-if check onto the stack. The type will be modified
        // when the loop's body is parsed and a suitable if statement exists.
        state.forinifchecks.push({
          type: "(none)"
        });
      }

      state.funct["(breakage)"] += 1;
      state.funct["(loopage)"] += 1;

      s = block(context, true, true);

      if (nextop.value === "in" && state.option.forin) {
        if (state.forinifchecks && state.forinifchecks.length > 0) {
          var check = state.forinifchecks.pop();

          if (// No if statement or not the first statement in loop body
              s && s.length > 0 && (typeof s[0] !== "object" || s[0].value !== "if") ||
              // Positive if statement is not the only one in loop body
              check.type === "(positive)" && s.length > 1 ||
              // Negative if statement but no continue
              check.type === "(negative)") {
            warning("W089", this);
          }
        }

        // Reset the flag in case no if statement was contained in the loop body
        state.forinifcheckneeded = false;
      }

      state.funct["(breakage)"] -= 1;
      state.funct["(loopage)"] -= 1;

    } else {
      if (foreachtok) {
        error("E045", foreachtok);
      }

      advance(";");
      if (decl && decl.first && decl.first[0]) {
        if (decl.value === "const"  && !decl.hasInitializer) {
          warning("E012", decl, decl.first[0].value);
        }

        decl.first.forEach(function(token) {
          state.funct["(scope)"].initialize(token.value);
        });
      }

      // start loopage after the first ; as the next two expressions are executed
      // on every loop
      state.funct["(loopage)"] += 1;
      if (state.tokens.next.id !== ";") {
        checkCondAssignment(expression(context, 0));
      }

      advance(";");
      if (state.tokens.next.id === ";") {
        error("E021", state.tokens.next, ")", ";");
      }
      if (state.tokens.next.id !== ")") {
        for (;;) {
          expression(context, 0);
          if (state.tokens.next.id !== ",") {
            break;
          }
          advance(",");
          checkComma();
        }
      }
      advance(")", t);
      state.funct["(breakage)"] += 1;
      block(context, true, true);
      state.funct["(breakage)"] -= 1;
      state.funct["(loopage)"] -= 1;
    }

    // unstack loop blockscope
    if (letscope) {
      state.funct["(scope)"].unstack();
    }
    return this;
  }).labelled = true;


  stmt("break", function() {
    var v = state.tokens.next.value;

    if (state.tokens.next.identifier &&
        sameLine(state.tokens.curr, state.tokens.next)) {
      if (!state.funct["(scope)"].funct.hasLabel(v)) {
        warning("W090", state.tokens.next, v);
      }
      this.first = state.tokens.next;
      advance();
    } else {
      if (state.funct["(breakage)"] === 0)
        warning("W052", state.tokens.next, this.value);
    }

    reachable(this);

    return this;
  }).exps = true;


  stmt("continue", function() {
    var v = state.tokens.next.value;

    if (state.funct["(breakage)"] === 0 || !state.funct["(loopage)"]) {
      warning("W052", state.tokens.next, this.value);
    }

    if (state.tokens.next.identifier) {
      if (sameLine(state.tokens.curr, state.tokens.next)) {
        if (!state.funct["(scope)"].funct.hasLabel(v)) {
          warning("W090", state.tokens.next, v);
        }
        this.first = state.tokens.next;
        advance();
      }
    }

    reachable(this);

    return this;
  }).exps = true;


  stmt("return", function(context) {
    if (sameLine(this, state.tokens.next)) {
      if (state.tokens.next.id !== ";" && !state.tokens.next.reach) {
        this.first = expression(context, 0);

        if (this.first &&
            this.first.type === "(punctuator)" && this.first.value === "=" &&
            !this.first.paren && !state.option.boss) {
          warning("W093", this.first);
        }

        if (state.option.noreturnawait && context & prodParams.async &&
            !(context & prodParams.tryClause) &&
            this.first.identifier && this.first.value === "await") {
          warning("W146", this.first);
        }
      }
    } else {
      if (state.tokens.next.type === "(punctuator)" &&
        ["[", "{", "+", "-"].indexOf(state.tokens.next.value) > -1) {
        nolinebreak(this); // always warn (Line breaking error)
      }
    }

    reachable(this);

    return this;
  }).exps = true;

  prefix("await", function(context) {
    if (context & prodParams.async) {
      // If the parameters of the current function scope have not been defined,
      // it is because the current expression is contained within the parameter
      // list.
      if (!state.funct["(params)"]) {
        error("E024", this, "await");
      }

      expression(context, 10);
      return this;
    } else {
      this.exps = false;
      return state.syntax["(identifier)"].nud.apply(this, arguments);
    }
  }).exps = true;

  (function(asyncSymbol) {
    asyncSymbol.meta = { es5: true, isFutureReservedWord: true, strictOnly: true };
    asyncSymbol.isFunc = function() {
      var next = state.tokens.next;
      var afterParens;

      if (this.line !== next.line) {
        return false;
      }

      if (next.id === "function") {
        return true;
      }

      if (next.id === "(") {
        afterParens = peekThroughParens(0);

        return afterParens.id === "=>";
      }

      if (next.identifier) {
        return peek().id === "=>";
      }

      return false;
    };
    asyncSymbol.useFud = asyncSymbol.isFunc;
    // async function declaration
    asyncSymbol.fud = function(context) {
      if (!state.inES8()) {
        warning("W119", this, "async functions", "8");
      }
      context |= prodParams.preAsync;
      context |= prodParams.initial;
      this.func = expression(context, 0);
      this.block = this.func.block;
      this.exps = this.func.exps;
      return this;
    };
    asyncSymbol.exps = true;
    delete asyncSymbol.reserved;
  }(prefix("async", function(context, rbp) {
    if (this.isFunc(context)) {
      if (!state.inES8()) {
        warning("W119", this, "async functions", "8");
      }

      context |= prodParams.preAsync;
      this.func = expression(context, rbp);
      this.identifier = false;
      return this;
    }

    this.exps = false;
    return state.syntax["(identifier)"].nud.apply(this, arguments);
  })));

  (function(yieldSymbol) {
    yieldSymbol.rbp = yieldSymbol.lbp = 25;
    yieldSymbol.exps = true;
  })(prefix("yield", function(context) {
    if (state.inMoz()) {
      return mozYield.call(this, context);
    }

    if (!(context & prodParams.yield)) {
      this.exps = false;
      return state.syntax["(identifier)"].nud.apply(this, arguments);
    }

    var prev = state.tokens.prev;

    // If the parameters of the current function scope have not been defined,
    // it is because the current expression is contained within the parameter
    // list.
    if (!state.funct["(params)"]) {
      error("E024", this, "yield");
    }

    if (!this.beginsStmt && prev.lbp > 30 && !checkPunctuators(prev, ["("])) {
      error("E061", this);
    }

    if (!state.inES6()) {
      warning("W104", state.tokens.curr, "yield", "6");
    }
    state.funct["(yielded)"] = true;

    if (state.tokens.next.value === "*") {
      advance("*");
    }

    // Parse operand
    if (state.tokens.curr.value === "*" || sameLine(state.tokens.curr, state.tokens.next)) {
      if (state.tokens.next.nud) {

        nobreaknonadjacent(state.tokens.curr, state.tokens.next);
        this.first = expression(context, 10);

        if (this.first.type === "(punctuator)" && this.first.value === "=" &&
            !this.first.paren && !state.option.boss) {
          warning("W093", this.first);
        }
      } else if (state.tokens.next.led) {
        if (state.tokens.next.id !== ",") {
          error("W017", state.tokens.next);
        }
      }
    }

    return this;
  }));

  /**
   * Parsing logic for non-standard Mozilla implementation of `yield`
   * expressions.
   */
  var mozYield = function(context) {
    var prev = state.tokens.prev;
    if (state.inES6(true) && !(context & prodParams.yield)) {
      error("E046", state.tokens.curr, "yield");
    }
    state.funct["(yielded)"] = true;
    var delegatingYield = false;

    if (state.tokens.next.value === "*") {
      delegatingYield = true;
      advance("*");
    }

    if (sameLine(this, state.tokens.next)) {
      if (delegatingYield ||
          (state.tokens.next.id !== ";" && !state.option.asi &&
           !state.tokens.next.reach && state.tokens.next.nud)) {

        nobreaknonadjacent(state.tokens.curr, state.tokens.next);
        this.first = expression(context, 10);

        if (this.first.type === "(punctuator)" && this.first.value === "=" &&
            !this.first.paren && !state.option.boss) {
          warning("W093", this.first);
        }
      }
      if (state.tokens.next.id !== ")" &&
          (prev.lbp > 30 || (!prev.assign && !isEndOfExpr()))) {
        error("E050", this);
      }
    } else if (!state.option.asi) {
      nolinebreak(this); // always warn (Line breaking error)
    }
    return this;
  };

  stmt("throw", function(context) {
    nolinebreak(this);
    this.first = expression(context, 20);

    reachable(this);

    return this;
  }).exps = true;

  prefix("import", function(context) {
    var mp = metaProperty(context, "meta", function() {
      if (!state.inES11(true)) {
        warning("W119", state.tokens.prev, "import.meta", "11");
      }
      if (!state.option.module) {
        error("E070", state.tokens.prev);
      }
    });

    if (mp) {
      return mp;
    }

    if (!checkPunctuator(state.tokens.next, "(")) {
      return state.syntax["(identifier)"].nud.call(this, context);
    }

    if (!state.inES11()) {
      warning("W119", state.tokens.curr, "dynamic import", "11");
    }

    advance("(");
    expression(context, 10);
    advance(")");
    return this;
  });

  var importSymbol = stmt("import", function(context) {
    if (!state.funct["(scope)"].block.isGlobal()) {
      error("E053", state.tokens.curr, "Import");
    }

    if (!state.inES6()) {
      warning("W119", state.tokens.curr, "import", "6");
    }

    if (state.tokens.next.type === "(string)") {
      // ModuleSpecifier :: StringLiteral
      advance("(string)");
      return this;
    }

    if (state.tokens.next.identifier) {
      // ImportClause :: ImportedDefaultBinding
      this.name = identifier(context);
      // Import bindings are immutable (see ES6 8.1.1.5.5)
      state.funct["(scope)"].addbinding(this.name, {
        type: "import",
        initialized: true,
        token: state.tokens.curr });

      if (state.tokens.next.value === ",") {
        // ImportClause :: ImportedDefaultBinding , NameSpaceImport
        // ImportClause :: ImportedDefaultBinding , NamedImports
        advance(",");
        // At this point, we intentionally fall through to continue matching
        // either NameSpaceImport or NamedImports.
        // Discussion:
        // https://github.com/jshint/jshint/pull/2144#discussion_r23978406
      } else {
        advance("from");
        advance("(string)");
        return this;
      }
    }

    if (state.tokens.next.id === "*") {
      // ImportClause :: NameSpaceImport
      advance("*");
      advance("as");
      if (state.tokens.next.identifier) {
        this.name = identifier(context);
        // Import bindings are immutable (see ES6 8.1.1.5.5)
        state.funct["(scope)"].addbinding(this.name, {
          type: "import",
          initialized: true,
          token: state.tokens.curr });
      }
    } else {
      // ImportClause :: NamedImports
      advance("{");
      for (;;) {
        if (state.tokens.next.value === "}") {
          advance("}");
          break;
        }
        var importName;
        if (peek().value === "as") {
          identifier(context, true);
          advance("as");
          importName = identifier(context);
        } else {
          importName = identifier(context);
        }

        // Import bindings are immutable (see ES6 8.1.1.5.5)
        state.funct["(scope)"].addbinding(importName, {
          type: "import",
          initialized: true,
          token: state.tokens.curr });

        if (state.tokens.next.value === ",") {
          advance(",");
        } else if (state.tokens.next.value === "}") {
          advance("}");
          break;
        } else {
          error("E024", state.tokens.next, state.tokens.next.value);
          break;
        }
      }
    }

    // FromClause
    advance("from");
    advance("(string)");

    // Support for ES2015 modules was released without warning for `import`
    // declarations that lack bindings. Issuing a warning would therefor
    // constitute a breaking change.
    // TODO: enable this warning in JSHint 3
    // if (hasBindings) {
    //   warning("W142", this, "import", moduleSpecifier);
    // }

    return this;
  });
  importSymbol.exps = true;
  importSymbol.reserved = true;
  importSymbol.meta = { isFutureReservedWord: true, es5: true };
  importSymbol.useFud = function() {
    return !(checkPunctuators(state.tokens.next, [".", "("]));
  };
  importSymbol.rbp = 161;

  stmt("export", function(context) {
    var ok = true;
    var token;
    var moduleSpecifier;
    context = context | prodParams.export;

    if (!state.inES6()) {
      warning("W119", state.tokens.curr, "export", "6");
      ok = false;
    }

    if (!state.funct["(scope)"].block.isGlobal()) {
      error("E053", state.tokens.curr, "Export");
      ok = false;
    }

    if (state.tokens.next.value === "*") {
      // ExportDeclaration :: export * FromClause
      // ExportDeclaration :: export * as IdentifierName FromClause
      advance("*");

      if (state.tokens.next.value === "as") {
        if (!state.inES11()) {
          warning("W119", state.tokens.curr, "export * as ns from", "11");
        }
        advance("as");
        identifier(context, true);
        state.funct["(scope)"].setExported(null, state.tokens.curr);
      }

      advance("from");
      advance("(string)");
      return this;
    }

    if (state.tokens.next.type === "default") {
      // ExportDeclaration ::
      //      export default [lookahead ∉ { function, class }] AssignmentExpression[In] ;
      //      export default HoistableDeclaration
      //      export default ClassDeclaration

      // because the 'name' of a default-exported function is, confusingly, 'default'
      // see https://bocoup.com/blog/whats-in-a-function-name
      state.nameStack.set(state.tokens.next);

      advance("default");
      var def = state.tokens.curr;
      var exportType = state.tokens.next.id;
      if (exportType === "function") {
        this.block = true;
        advance("function");
        token = state.syntax["function"].fud(context);
        state.funct["(scope)"].setExported(token.name, def);
      } else if (exportType === "async" && peek().id === "function") {
        this.block = true;
        advance("async");
        advance("function");
        token = state.syntax["function"].fud(context | prodParams.preAsync);
        state.funct["(scope)"].setExported(token.name, def);
      } else if (exportType === "class") {
        this.block = true;
        advance("class");
        token = state.syntax["class"].fud(context);
        state.funct["(scope)"].setExported(token.name, def);
      } else {
        expression(context, 10);
        state.funct["(scope)"].setExported(null, def);
      }
      return this;
    }
    if (state.tokens.next.value === "{") {
      // ExportDeclaration :: export ExportClause
      advance("{");
      var exportedTokens = [];
      while (!checkPunctuator(state.tokens.next, "}")) {
        if (!state.tokens.next.identifier) {
          /* istanbul ignore next */
          error("E030", state.tokens.next, state.tokens.next.value);
        }
        advance();

        if (state.tokens.next.value === "as") {
          advance("as");
          if (!state.tokens.next.identifier) {
            /* istanbul ignore next */
            error("E030", state.tokens.next, state.tokens.next.value);
          }
          exportedTokens.push({
            local: state.tokens.prev,
            export: state.tokens.next
          });
          advance();
        } else {
          exportedTokens.push({
            local: state.tokens.curr,
            export: state.tokens.curr
          });
        }

        if (!checkPunctuator(state.tokens.next, "}")) {
          advance(",");
        }
      }
      advance("}");
      if (state.tokens.next.value === "from") {
        // ExportDeclaration :: export ExportClause FromClause
        advance("from");
        moduleSpecifier = state.tokens.next;
        advance("(string)");
      } else if (ok) {
        exportedTokens.forEach(function(x) {
          state.funct["(scope)"].setExported(x.local, x.export);
        });
      }

      if (exportedTokens.length === 0) {
        if (moduleSpecifier) {
          warning("W142", this, "export", moduleSpecifier.value);
        } else {
          warning("W141", this, "export");
        }
      }

      return this;
    } else if (state.tokens.next.id === "var") {
      // ExportDeclaration :: export VariableStatement
      advance("var");
      token = state.tokens.curr.fud(context);
      token.first.forEach(function(binding) {
        state.funct["(scope)"].setExported(binding, binding);
      });
    } else if (state.tokens.next.id === "let") {
      // ExportDeclaration :: export VariableStatement
      advance("let");
      token = state.tokens.curr.fud(context);
      token.first.forEach(function(binding) {
        state.funct["(scope)"].setExported(binding, binding);
      });
    } else if (state.tokens.next.id === "const") {
      // ExportDeclaration :: export VariableStatement
      advance("const");
      token = state.tokens.curr.fud(context);
      token.first.forEach(function(binding) {
        state.funct["(scope)"].setExported(binding, binding);
      });
    } else if (state.tokens.next.id === "function") {
      // ExportDeclaration :: export Declaration
      this.block = true;
      advance("function");
      token = state.syntax["function"].fud(context);
      state.funct["(scope)"].setExported(token.name, token.name);
    } else if (state.tokens.next.id === "async" && peek().id === "function") {
      // ExportDeclaration :: export Declaration
      this.block = true;
      advance("async");
      advance("function");
      token = state.syntax["function"].fud(context | prodParams.preAsync);
      state.funct["(scope)"].setExported(token.name, token.name);
    } else if (state.tokens.next.id === "class") {
      // ExportDeclaration :: export Declaration
      this.block = true;
      advance("class");
      token = state.syntax["class"].fud(context);
      state.funct["(scope)"].setExported(token.name, token.name);
    } else {
      /* istanbul ignore next */
      error("E024", state.tokens.next, state.tokens.next.value);
    }

    return this;
  }).exps = true;

  /**
   * Determine if SuperCall or SuperProperty may be used in the current context
   * (as described by the provided "functor" object).
   *
   * @param {string} type - one of "property" or "call"
   * @param {object} funct - a "functor" object describing the current function
   *                         context
   *
   * @returns {boolean}
   */
  function supportsSuper(type, funct) {
    if (type === "call" && funct["(async)"]) {
      return false;
    }

    if (type === "property" && funct["(method)"]) {
      return true;
    }

    if (type === "call" && funct["(statement)"] &&
      funct["(statement)"].id === "class") {
      return true;
    }

    if (funct["(arrow)"]) {
      return supportsSuper(type, funct["(context)"]);
    }

    return false;
  }

  var superNud = function() {
    var next = state.tokens.next;

    if (checkPunctuators(next, ["[", "."])) {
      if (!supportsSuper("property", state.funct)) {
        error("E063", this);
      }
    } else if (checkPunctuator(next, "(")) {
      if (!supportsSuper("call", state.funct)) {
        error("E064", this);
      }
    } else {
      error("E024", next, next.value || next.id);
    }

    return this;
  };

  // Future Reserved Words

  FutureReservedWord("abstract");
  FutureReservedWord("boolean");
  FutureReservedWord("byte");
  FutureReservedWord("char");
  FutureReservedWord("double");
  FutureReservedWord("enum", { es5: true });
  FutureReservedWord("export", { es5: true });
  FutureReservedWord("extends", { es5: true });
  FutureReservedWord("final");
  FutureReservedWord("float");
  FutureReservedWord("goto");
  FutureReservedWord("implements", { es5: true, strictOnly: true });
  FutureReservedWord("int");
  FutureReservedWord("interface", { es5: true, strictOnly: true });
  FutureReservedWord("long");
  FutureReservedWord("native");
  FutureReservedWord("package", { es5: true, strictOnly: true });
  FutureReservedWord("private", { es5: true, strictOnly: true });
  FutureReservedWord("protected", { es5: true, strictOnly: true });
  FutureReservedWord("public", { es5: true, strictOnly: true });
  FutureReservedWord("short");
  FutureReservedWord("static", { es5: true, strictOnly: true });
  FutureReservedWord("synchronized");
  FutureReservedWord("transient");
  FutureReservedWord("volatile");

  // this function is used to determine whether a squarebracket or a curlybracket
  // expression is a comprehension array, destructuring assignment or a json value.

  var lookupBlockType = function() {
    var pn, pn1, prev;
    var i = -1;
    var bracketStack = 0;
    var ret = {};
    if (checkPunctuators(state.tokens.curr, ["[", "{"])) {
      bracketStack += 1;
    }
    do {
      prev = i === -1 ? state.tokens.curr : pn;
      pn = i === -1 ? state.tokens.next : peek(i);
      pn1 = peek(i + 1);
      i = i + 1;
      if (checkPunctuators(pn, ["[", "{"])) {
        bracketStack += 1;
      } else if (checkPunctuators(pn, ["]", "}"])) {
        bracketStack -= 1;
      }
      if (bracketStack === 1 && pn.identifier && pn.value === "for" &&
          !checkPunctuator(prev, ".")) {
        ret.isCompArray = true;
        ret.notJson = true;
        break;
      }
      if (bracketStack === 0 && checkPunctuators(pn, ["}", "]"])) {
        if (pn1.value === "=") {
          ret.isDestAssign = true;
          ret.notJson = true;
          break;
        } else if (pn1.value === ".") {
          ret.notJson = true;
          break;
        }
      }
      if (checkPunctuator(pn, ";")) {
        ret.notJson = true;
      }
    } while (bracketStack > 0 && pn.id !== "(end)");
    return ret;
  };

  /**
   * Update an object used to track property names within object initializers
   * and class bodies. Produce warnings in response to duplicated names.
   *
   * @param {object} props - a collection of all properties of the object or
   *                         class to which the current property is being
   *                         assigned
   * @param {string} name - the property name
   * @param {object} tkn - the token defining the property
   * @param {boolean} [isClass] - whether the accessor is part of an ES6 Class
   *                              definition
   * @param {boolean} [isStatic] - whether the accessor is a static method
   * @param {boolean} [isComputed] - whether the property is a computed expression like [Symbol.iterator]
   */
  function saveProperty(props, name, tkn, isClass, isStatic, isComputed) {
    if (tkn.identifier) {
      name = tkn.value;
    }
    var key = name;
    if (isClass && isStatic) {
      key = "static " + name;
    }

    if (props[key] && name !== "__proto__" && !isComputed) {
      var msg = ["key", "class method", "static class method"];
      msg = msg[(isClass || false) + (isStatic || false)];
      warning("W075", state.tokens.next, msg, name);
    } else {
      props[key] = Object.create(null);
    }

    props[key].basic = true;
    props[key].basictkn = tkn;
  }

  /**
   * Update an object used to track property names within object initializers
   * and class bodies. Produce warnings in response to duplicated names.
   *
   * @param {string} accessorType - Either "get" or "set"
   * @param {object} props - a collection of all properties of the object or
   *                         class to which the current accessor is being
   *                         assigned
   * @param {object} tkn - the identifier token representing the accessor name
   * @param {boolean} [isClass] - whether the accessor is part of an ES6 Class
   *                              definition
   * @param {boolean} [isStatic] - whether the accessor is a static method
   */
  function saveAccessor(accessorType, props, name, tkn, isClass, isStatic) {
    var flagName = accessorType === "get" ? "getterToken" : "setterToken";
    var key = name;
    state.tokens.curr.accessorType = accessorType;
    state.nameStack.set(tkn);
    if (isClass && isStatic) {
      key = "static " + name;
    }

    if (props[key]) {
      if ((props[key].basic || props[key][flagName]) && name !== "__proto__") {
        var msg = "";
        if (isClass) {
          if (isStatic) {
            msg += "static ";
          }
          msg += accessorType + "ter method";
        } else {
          msg = "key";
        }
        warning("W075", state.tokens.next, msg, name);
      }
    } else {
      props[key] = Object.create(null);
    }

    props[key][flagName] = tkn;
    if (isStatic) {
      props[key].static = true;
    }
  }

  /**
   * Parse a computed property name within object initializers and class bodies
   * as introduced by ES2015. For example:
   *
   *     void {
   *       [object.method()]: null
   *     };
   *
   * @param {number} context - the parsing context
   *
   * @returns {object} - the token value that describes the expression which
   *                     defines the property name
   */
  function computedPropertyName(context) {
    advance("[");

    // Explicitly reclassify token as a delimeter to prevent its later
    // interpretation as an "infix" operator.
    state.tokens.curr.delim = true;
    state.tokens.curr.lbp = 0;

    if (!state.inES6()) {
      warning("W119", state.tokens.curr, "computed property names", "6");
    }
    var value = expression(context & ~prodParams.noin, 10);
    advance("]");
    return value;
  }

  /**
   * Test whether a given token is a punctuator whose `value` property matches
   * one of the specified values. This function explicitly verifies the token's
   * `type` property so that like-valued string literals (e.g. `";"`) do not
   * produce false positives.
   *
   * @param {Token} token
   * @param {Array.<string>} values
   *
   * @returns {boolean}
   */
  function checkPunctuators(token, values) {
    if (token.type === "(punctuator)") {
      return _.includes(values, token.value);
    }
    return false;
  }

  /**
   * Test whether a given token is a punctuator whose `value` property matches
   * the specified value. This function explicitly verifies the token's `type`
   * property so that like-valued string literals (e.g. `";"`) do not produce
   * false positives.
   *
   * @param {Token} token
   * @param {string} value
   *
   * @returns {boolean}
   */
  function checkPunctuator(token, value) {
    return token.type === "(punctuator)" && token.value === value;
  }

  // Check whether this function has been reached for a destructuring assign with undeclared values
  function destructuringAssignOrJsonValue(context) {
    // lookup for the assignment (ECMAScript 6 only)
    // if it has semicolons, it is a block, so go parse it as a block
    // or it's not a block, but there are assignments, check for undeclared variables

    var block = lookupBlockType();
    if (block.notJson) {
      if (!state.inES6() && block.isDestAssign) {
        /* istanbul ignore next */
        warning("W104", state.tokens.curr, "destructuring assignment", "6");
      }
      statements(context);
    // otherwise parse json value
    } else {
      state.option.laxbreak = true;
      state.jsonMode = true;
      jsonValue();
    }
  }

  /**
   * Parse and define the three states of a list comprehension in order to
   * avoid defining global variables, but keeping them to the list
   * comprehension scope only. The order of the states are as follows:
   *
   * - "use" - which will be the returned iterative part of the list
   *   comprehension
   * - "define" - which will define the variables local to the list
   *   comprehension
   * - "filter" - which will help filter out values
   */
  var arrayComprehension = function() {
    var CompArray = function() {
      this.mode = "use";
      this.variables = [];
    };
    var _carrays = [];
    var _current;
    function declare(v) {
      var l = _current.variables.filter(function(elt) {
        // if it has, change its undef state
        if (elt.value === v) {
          elt.undef = false;
          return v;
        }
      }).length;
      return l !== 0;
    }
    function use(v) {
      var l = _current.variables.filter(function(elt) {
        // and if it has been defined
        if (elt.value === v && !elt.undef) {
          if (elt.unused === true) {
            elt.unused = false;
          }
          return v;
        }
      }).length;
      // otherwise we warn about it
      return (l === 0);
    }
    return { stack: function() {
          _current = new CompArray();
          _carrays.push(_current);
        },
        unstack: function() {
          _current.variables.filter(function(v) {
            if (v.unused)
              warning("W098", v.token, v.token.raw_text || v.value);
            if (v.undef)
              state.funct["(scope)"].block.use(v.value, v.token);
          });
          _carrays.splice(-1, 1);
          _current = _carrays[_carrays.length - 1];
        },
        setState: function(s) {
          if (_.includes(["use", "define", "generate", "filter"], s))
            _current.mode = s;
        },
        check: function(v) {
          if (!_current) {
            return;
          }
          // When we are in "use" state of the list comp, we enqueue that var
          if (_current && _current.mode === "use") {
            if (use(v)) {
              _current.variables.push({
                token: state.tokens.curr,
                value: v,
                undef: true,
                unused: false
              });
            }
            return true;
          // When we are in "define" state of the list comp,
          } else if (_current && _current.mode === "define") {
            // check if the variable has been used previously
            if (!declare(v)) {
              _current.variables.push({
                token: state.tokens.curr,
                value: v,
                undef: false,
                unused: true
              });
            }
            return true;
          // When we are in the "generate" state of the list comp,
          } else if (_current && _current.mode === "generate") {
            state.funct["(scope)"].block.use(v, state.tokens.curr);
            return true;
          // When we are in "filter" state,
          } else if (_current && _current.mode === "filter") {
            // we check whether current variable has been declared
            if (use(v)) {
              // if not we warn about it
              /* istanbul ignore next */
              state.funct["(scope)"].block.use(v, state.tokens.curr);
            }
            return true;
          }
          /* istanbul ignore next */
          return false;
        }
        };
  };


  /**
   * Parse input according to the JSON format.
   *
   * http://json.org/
   */
  function jsonValue() {
    function jsonObject() {
      var o = {}, t = state.tokens.next;
      advance("{");
      if (state.tokens.next.id !== "}") {
        for (;;) {
          if (state.tokens.next.id === "(end)") {
            error("E026", state.tokens.next, t.line);
          } else if (state.tokens.next.id === "}") {
            warning("W094", state.tokens.curr);
            break;
          } else if (state.tokens.next.id === ",") {
            error("E028", state.tokens.next);
          } else if (state.tokens.next.id !== "(string)") {
            warning("W095", state.tokens.next, state.tokens.next.value);
          }
          if (o[state.tokens.next.value] === true) {
            warning("W075", state.tokens.next, "key", state.tokens.next.value);
          } else if ((state.tokens.next.value === "__proto__" &&
            !state.option.proto) || (state.tokens.next.value === "__iterator__" &&
            !state.option.iterator)) {
            warning("W096", state.tokens.next, state.tokens.next.value);
          } else {
            o[state.tokens.next.value] = true;
          }
          advance();
          advance(":");
          jsonValue();
          if (state.tokens.next.id !== ",") {
            break;
          }
          advance(",");
        }
      }
      advance("}");
    }

    function jsonArray() {
      var t = state.tokens.next;
      advance("[");
      if (state.tokens.next.id !== "]") {
        for (;;) {
          if (state.tokens.next.id === "(end)") {
            error("E027", state.tokens.next, t.line);
          } else if (state.tokens.next.id === "]") {
            warning("W094", state.tokens.curr);
            break;
          } else if (state.tokens.next.id === ",") {
            error("E028", state.tokens.next);
          }
          jsonValue();
          if (state.tokens.next.id !== ",") {
            break;
          }
          advance(",");
        }
      }
      advance("]");
    }

    switch (state.tokens.next.id) {
    case "{":
      jsonObject();
      break;
    case "[":
      jsonArray();
      break;
    case "true":
    case "false":
    case "null":
    case "(number)":
    case "(string)":
      advance();
      break;
    case "-":
      advance("-");
      advance("(number)");
      break;
    default:
      error("E003", state.tokens.next);
    }
  }

  /**
   * Lint dynamically-evaluated code, appending any resulting errors/warnings
   * into the global `errors` array.
   *
   * @param {array} internals - collection of "internals" objects describing
   *                            string tokens that contain evaluated code
   * @param {object} options - linting options to apply
   * @param {object} globals - globally-defined bindings for the evaluated code
   */
  function lintEvalCode(internals, options, globals) {
    var priorErrorCount, idx, jdx, internal;

    for (idx = 0; idx < internals.length; idx += 1) {
      internal = internals[idx];
      options.scope = internal.elem;
      priorErrorCount = JSHINT.errors.length;

      itself(internal.code, options, globals);

      for (jdx = priorErrorCount; jdx < JSHINT.errors.length; jdx += 1) {
        JSHINT.errors[jdx].line += internal.token.line - 1;
      }
    }
  }

  var escapeRegex = function(str) {
    return str.replace(/[-\/\\^$*+?.()|[\]{}]/g, "\\$&");
  };

  // The actual JSHINT function itself.
  var itself = function(s, o, g) {
    var x, reIgnoreStr, reIgnore;
    var optionKeys, newOptionObj, newIgnoredObj;

    o = _.clone(o);
    state.reset();
    newOptionObj = state.option;
    newIgnoredObj = state.ignored;

    if (o && o.scope) {
      JSHINT.scope = o.scope;
    } else {
      JSHINT.errors = [];
      JSHINT.internals = [];
      JSHINT.blacklist = {};
      JSHINT.scope = "(main)";
    }

    predefined = Object.create(null);
    combine(predefined, vars.ecmaIdentifiers[3]);
    combine(predefined, vars.reservedVars);

    declared = Object.create(null);
    var exported = Object.create(null); // Variables that live outside the current file

    function each(obj, cb) {
      if (!obj)
        return;

      if (!Array.isArray(obj) && typeof obj === "object")
        obj = Object.keys(obj);

      obj.forEach(cb);
    }

    if (o) {

      each([o.predef, o.globals], function(dict) {
        each(dict, function(item) {
          var slice, prop;

          if (item[0] === "-") {
            slice = item.slice(1);
            JSHINT.blacklist[slice] = slice;
            // remove from predefined if there
            delete predefined[slice];
          } else {
            prop = Object.getOwnPropertyDescriptor(dict, item);
            predefined[item] = prop ? prop.value : false;
          }
        });
      });

      each(o.exported || null, function(item) {
        exported[item] = true;
      });

      delete o.predef;
      delete o.exported;

      optionKeys = Object.keys(o);
      for (x = 0; x < optionKeys.length; x++) {
        if (/^-W\d{3}$/g.test(optionKeys[x])) {
          newIgnoredObj[optionKeys[x].slice(1)] = true;
        } else {
          var optionKey = optionKeys[x];
          newOptionObj[optionKey] = o[optionKey];
        }
      }
    }

    state.option = newOptionObj;
    state.ignored = newIgnoredObj;

    state.option.indent = state.option.indent || 4;
    state.option.maxerr = state.option.maxerr || 50;

    indent = 1;

    var scopeManagerInst = scopeManager(state, predefined, exported, declared);
    scopeManagerInst.on("warning", function(ev) {
      warning.apply(null, [ ev.code, ev.token].concat(ev.data));
    });

    scopeManagerInst.on("error", function(ev) {
      /* istanbul ignore next */
      error.apply(null, [ ev.code, ev.token ].concat(ev.data));
    });

    state.funct = functor("(global)", null, {
      "(global)"    : true,
      "(scope)"     : scopeManagerInst,
      "(comparray)" : arrayComprehension(),
      "(metrics)"   : createMetrics(state.tokens.next)
    });

    functions = [state.funct];
    member = {};
    membersOnly = null;
    inblock = false;
    lookahead = [];

    if (!isString(s) && !Array.isArray(s)) {
      errorAt("E004", 0);
      return false;
    }

    api = {
      get isJSON() {
        /* istanbul ignore next */
        return state.jsonMode;
      },

      getOption: function(name) {
        return state.option[name] || null;
      },

      getCache: function(name) {
        return state.cache[name];
      },

      setCache: function(name, value) {
        state.cache[name] = value;
      },

      warn: function(code, data) {
        warningAt.apply(null, [ code, data.line, data.char ].concat(data.data));
      },

      on: function(names, listener) {
        names.split(" ").forEach(function(name) {
          emitter.on(name, listener);
        }.bind(this));
      }
    };

    emitter.removeAllListeners();
    (extraModules || []).forEach(function(func) {
      func(api);
    });

    state.tokens.prev = state.tokens.curr = state.tokens.next = state.syntax["(begin)"];
    if (o && o.ignoreDelimiters) {

      if (!Array.isArray(o.ignoreDelimiters)) {
        /* istanbul ignore next */
        o.ignoreDelimiters = [o.ignoreDelimiters];
      }

      o.ignoreDelimiters.forEach(function(delimiterPair) {
        if (!delimiterPair.start || !delimiterPair.end)
            return;

        reIgnoreStr = escapeRegex(delimiterPair.start) +
                      "[\\s\\S]*?" +
                      escapeRegex(delimiterPair.end);

        reIgnore = new RegExp(reIgnoreStr, "ig");

        s = s.replace(reIgnore, function(match) {
          return match.replace(/./g, " ");
        });
      });
    }

    lex = new Lexer(s);

    lex.on("warning", function(ev) {
      warningAt.apply(null, [ ev.code, ev.line, ev.character].concat(ev.data));
    });

    lex.on("error", function(ev) {
      errorAt.apply(null, [ ev.code, ev.line, ev.character ].concat(ev.data));
    });

    lex.on("fatal", function(ev) {
      quit("E041", ev);
    });

    lex.on("Identifier", function(ev) {
      emitter.emit("Identifier", ev);
    });

    lex.on("String", function(ev) {
      emitter.emit("String", ev);
    });

    lex.on("Number", function(ev) {
      emitter.emit("Number", ev);
    });

    // Check options
    var name;
    for (name in o) {
      if (_.has(o, name)) {
        checkOption(name, true, state.tokens.curr);
      }
    }
    if (o) {
      for (name in o.unstable) {
        if (_.has(o.unstable, name)) {
          checkOption(name, false, state.tokens.curr);
        }
      }
    }

    try {
      applyOptions();

      // combine the passed globals after we've assumed all our options
      combine(predefined, g || {});

      //reset values
      checkComma.first = true;

      advance();
      switch (state.tokens.next.id) {
      case "{":
      case "[":
        destructuringAssignOrJsonValue(0);
        break;
      default:
        directives();

        if (state.directive["use strict"]) {
          if (!state.allowsGlobalUsd()) {
            warning("W097", state.directive["use strict"]);
          }
        }

        statements(0);
      }

      if (state.tokens.next.id !== "(end)") {
        quit("E041", state.tokens.curr);
      }

      state.funct["(scope)"].unstack();

    } catch (err) {
      if (err && err.name === "JSHintError") {
        var nt = state.tokens.next || {};
        JSHINT.errors.push({
          scope     : "(main)",
          raw       : err.raw,
          code      : err.code,
          reason    : err.reason,
          line      : err.line || nt.line,
          character : err.character || nt.from
        });
      } else {
        /* istanbul ignore next */
        throw err;
      }
    }

    // Loop over the listed "internals", and check them as well.
    if (JSHINT.scope === "(main)") {
      lintEvalCode(JSHINT.internals, o || {}, g);
    }

    return JSHINT.errors.length === 0;
  };

  // Modules.
  itself.addModule = function(func) {
    extraModules.push(func);
  };

  itself.addModule(style.register);

  // Data summary.
  itself.data = function() {
    var data = {
      functions: [],
      options: state.option
    };

    var fu, f, i, n, globals;

    if (itself.errors.length) {
      data.errors = itself.errors;
    }

    if (state.jsonMode) {
      /* istanbul ignore next */
      data.json = true;
    }

    var impliedGlobals = state.funct["(scope)"].getImpliedGlobals();
    if (impliedGlobals.length > 0) {
      data.implieds = impliedGlobals;
    }

    globals = state.funct["(scope)"].getUsedOrDefinedGlobals();
    if (globals.length > 0) {
      data.globals = globals;
    }

    for (i = 1; i < functions.length; i += 1) {
      f = functions[i];
      fu = {};

      fu.name = f["(name)"];
      fu.param = f["(params)"];
      fu.line = f["(line)"];
      fu.character = f["(character)"];
      fu.last = f["(last)"];
      fu.lastcharacter = f["(lastcharacter)"];

      fu.metrics = {
        complexity: f["(metrics)"].ComplexityCount,
        parameters: f["(metrics)"].arity,
        statements: f["(metrics)"].statementCount
      };

      data.functions.push(fu);
    }

    var unuseds = state.funct["(scope)"].getUnuseds();
    if (unuseds.length > 0) {
      data.unused = unuseds;
    }

    for (n in member) {
      if (typeof member[n] === "number") {
        data.member = member;
        break;
      }
    }

    return data;
  };

  itself.jshint = itself;

  return itself;
}());

// Make JSHINT a Node module, if possible.
if (typeof exports === "object" && exports) {
  exports.JSHINT = JSHINT;
}

},{"./lex.js":17,"./messages.js":18,"./options.js":20,"./prod-params.js":21,"./reg.js":22,"./scope-manager.js":23,"./state.js":24,"./style.js":25,"./vars.js":27,"console-browserify":9,"events":11,"lodash":12}]},{},[]);

JSHINT = require('jshint').JSHINT;
if (typeof exports === 'object' && exports) exports.JSHINT = JSHINT;
}());
/* --------------------------------------------------------------
         js/libs/codemirror/beautify.js
   -------------------------------------------------------------- */
!function(){var e;!function(){"use strict";var n=[function(t,e,u){var n=u(1).Beautifier,i=u(5).Options;t.exports=function(t,e){return new n(t,e).beautify()},t.exports.defaultOptions=function(){return new i}},function(t,e,u){var n=u(2).Output,i=u(3).Token,o=u(4),_=u(5).Options,s=u(7).Tokenizer,r=u(7).line_starters,h=u(7).positionable_operators,p=u(7).TOKEN;function l(t,e){return-1!==e.indexOf(t)}function a(t,e){return t&&t.type===p.RESERVED&&t.text===e}function f(t,e){return t&&t.type===p.RESERVED&&l(t.text,e)}var c=["case","return","do","if","throw","else","await","break","continue","async"],d=function(t){for(var e={},u=0;u<t.length;u++)e[t[u].replace(/-/g,"_")]=t[u];return e}(["before-newline","after-newline","preserve-newline"]),b=[d.before_newline,d.preserve_newline],g="BlockStatement",m="Statement",k="ObjectLiteral",w="ArrayLiteral",y="ForInitializer",x="Conditional",v="Expression";function E(t,e){e.multiline_frame||e.mode===y||e.mode===x||t.remove_indent(e.start_line_index)}function R(t){return t===w}function O(t){return l(t,[v,y,x])}function T(t,e){e=e||{},this._source_text=t||"",this._output=null,this._tokens=null,this._last_last_text=null,this._flags=null,this._previous_flags=null,this._flag_store=null,this._options=new _(e)}T.prototype.create_flags=function(t,e){var u=0;return t&&(u=t.indentation_level,!this._output.just_added_newline()&&t.line_indent_level>u&&(u=t.line_indent_level)),{mode:e,parent:t,last_token:t?t.last_token:new i(p.START_BLOCK,""),last_word:t?t.last_word:"",declaration_statement:!1,declaration_assignment:!1,multiline_frame:!1,inline_frame:!1,if_block:!1,else_block:!1,do_block:!1,do_while:!1,import_block:!1,in_case_statement:!1,in_case:!1,case_body:!1,indentation_level:u,alignment:0,line_indent_level:t?t.line_indent_level:u,start_line_index:this._output.get_line_number(),ternary_depth:0}},T.prototype._reset=function(t){var e=t.match(/^[\t ]*/)[0];this._last_last_text="",this._output=new n(this._options,e),this._output.raw=this._options.test_output_raw,this._flag_store=[],this.set_mode(g);e=new s(t,this._options);return this._tokens=e.tokenize(),t},T.prototype.beautify=function(){if(this._options.disabled)return this._source_text;var t=this._reset(this._source_text),e=this._options.eol;"auto"===this._options.eol&&(e="\n",t&&o.lineBreak.test(t||"")&&(e=t.match(o.lineBreak)[0]));for(var u=this._tokens.next();u;)this.handle_token(u),this._last_last_text=this._flags.last_token.text,this._flags.last_token=u,u=this._tokens.next();return this._output.get_code(e)},T.prototype.handle_token=function(t,e){t.type===p.START_EXPR?this.handle_start_expr(t):t.type===p.END_EXPR?this.handle_end_expr(t):t.type===p.START_BLOCK?this.handle_start_block(t):t.type===p.END_BLOCK?this.handle_end_block(t):t.type===p.WORD||t.type===p.RESERVED?this.handle_word(t):t.type===p.SEMICOLON?this.handle_semicolon(t):t.type===p.STRING?this.handle_string(t):t.type===p.EQUALS?this.handle_equals(t):t.type===p.OPERATOR?this.handle_operator(t):t.type===p.COMMA?this.handle_comma(t):t.type===p.BLOCK_COMMENT?this.handle_block_comment(t,e):t.type===p.COMMENT?this.handle_comment(t,e):t.type===p.DOT?this.handle_dot(t):t.type===p.EOF?this.handle_eof(t):(t.type,p.UNKNOWN,this.handle_unknown(t,e))},T.prototype.handle_whitespace_and_comments=function(t,e){var u=t.newlines,n=this._options.keep_array_indentation&&R(this._flags.mode);if(t.comments_before)for(var i=t.comments_before.next();i;)this.handle_whitespace_and_comments(i,e),this.handle_token(i,e),i=t.comments_before.next();if(n)for(var _=0;_<u;_+=1)this.print_newline(0<_,e);else if(this._options.max_preserve_newlines&&u>this._options.max_preserve_newlines&&(u=this._options.max_preserve_newlines),this._options.preserve_newlines&&1<u){this.print_newline(!1,e);for(var s=1;s<u;s+=1)this.print_newline(!0,e)}};var A=["async","break","continue","return","throw","yield"];T.prototype.allow_wrap_or_preserved_newline=function(t,e){e=void 0!==e&&e,this._output.just_added_newline()||(e=this._options.preserve_newlines&&t.newlines||e,(l(this._flags.last_token.text,h)||l(t.text,h))&&(t=l(this._flags.last_token.text,h)&&l(this._options.operator_position,b)||l(t.text,h),e=e&&t),e?this.print_newline(!1,!0):this._options.wrap_line_length&&(f(this._flags.last_token,A)||this._output.set_wrap_point()))},T.prototype.print_newline=function(t,e){if(!e&&";"!==this._flags.last_token.text&&","!==this._flags.last_token.text&&"="!==this._flags.last_token.text&&(this._flags.last_token.type!==p.OPERATOR||"--"===this._flags.last_token.text||"++"===this._flags.last_token.text))for(var u=this._tokens.peek();!(this._flags.mode!==m||this._flags.if_block&&a(u,"else")||this._flags.do_block);)this.restore_mode();this._output.add_new_line(t)&&(this._flags.multiline_frame=!0)},T.prototype.print_token_line_indentation=function(t){this._output.just_added_newline()&&(this._options.keep_array_indentation&&t.newlines&&("["===t.text||R(this._flags.mode))?(this._output.current_line.set_indent(-1),this._output.current_line.push(t.whitespace_before),this._output.space_before_token=!1):this._output.set_indent(this._flags.indentation_level,this._flags.alignment)&&(this._flags.line_indent_level=this._flags.indentation_level))},T.prototype.print_token=function(t){var e;this._output.raw?this._output.add_raw_token(t):(this._options.comma_first&&t.previous&&t.previous.type===p.COMMA&&this._output.just_added_newline()&&","===this._output.previous_line.last()&&(e=this._output.previous_line.pop(),this._output.previous_line.is_empty()&&(this._output.previous_line.push(e),this._output.trim(!0),this._output.current_line.pop(),this._output.trim()),this.print_token_line_indentation(t),this._output.add_token(","),this._output.space_before_token=!0),this.print_token_line_indentation(t),this._output.non_breaking_space=!0,this._output.add_token(t.text),this._output.previous_token_wrapped&&(this._flags.multiline_frame=!0))},T.prototype.indent=function(){this._flags.indentation_level+=1,this._output.set_indent(this._flags.indentation_level,this._flags.alignment)},T.prototype.deindent=function(){0<this._flags.indentation_level&&(!this._flags.parent||this._flags.indentation_level>this._flags.parent.indentation_level)&&(--this._flags.indentation_level,this._output.set_indent(this._flags.indentation_level,this._flags.alignment))},T.prototype.set_mode=function(t){this._flags?(this._flag_store.push(this._flags),this._previous_flags=this._flags):this._previous_flags=this.create_flags(null,t),this._flags=this.create_flags(this._previous_flags,t),this._output.set_indent(this._flags.indentation_level,this._flags.alignment)},T.prototype.restore_mode=function(){0<this._flag_store.length&&(this._previous_flags=this._flags,this._flags=this._flag_store.pop(),this._previous_flags.mode===m&&E(this._output,this._previous_flags),this._output.set_indent(this._flags.indentation_level,this._flags.alignment))},T.prototype.start_of_object_property=function(){return this._flags.parent.mode===k&&this._flags.mode===m&&(":"===this._flags.last_token.text&&0===this._flags.ternary_depth||f(this._flags.last_token,["get","set"]))},T.prototype.start_of_statement=function(t){return!!(f(this._flags.last_token,["var","let","const"])&&t.type===p.WORD||a(this._flags.last_token,"do")||!(this._flags.parent.mode===k&&this._flags.mode===m)&&f(this._flags.last_token,A)&&!t.newlines||a(this._flags.last_token,"else")&&!(a(t,"if")&&!t.comments_before)||this._flags.last_token.type===p.END_EXPR&&(this._previous_flags.mode===y||this._previous_flags.mode===x)||this._flags.last_token.type===p.WORD&&this._flags.mode===g&&!this._flags.in_case&&!("--"===t.text||"++"===t.text)&&"function"!==this._last_last_text&&t.type!==p.WORD&&t.type!==p.RESERVED||this._flags.mode===k&&(":"===this._flags.last_token.text&&0===this._flags.ternary_depth||f(this._flags.last_token,["get","set"])))&&(this.set_mode(m),this.indent(),this.handle_whitespace_and_comments(t,!0),this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t,f(t,["do","for","if","while"])),!0)},T.prototype.handle_start_expr=function(t){this.start_of_statement(t)||this.handle_whitespace_and_comments(t);var e,u,n=v;if("["===t.text){if(this._flags.last_token.type===p.WORD||")"===this._flags.last_token.text)return f(this._flags.last_token,r)&&(this._output.space_before_token=!0),this.print_token(t),this.set_mode(n),this.indent(),void(this._options.space_in_paren&&(this._output.space_before_token=!0));n=w,R(this._flags.mode)&&("["!==this._flags.last_token.text&&(","!==this._flags.last_token.text||"]"!==this._last_last_text&&"}"!==this._last_last_text)||this._options.keep_array_indentation||this.print_newline()),l(this._flags.last_token.type,[p.START_EXPR,p.END_EXPR,p.WORD,p.OPERATOR,p.DOT])||(this._output.space_before_token=!0)}else this._flags.last_token.type===p.RESERVED?"for"===this._flags.last_token.text?(this._output.space_before_token=this._options.space_before_conditional,n=y):l(this._flags.last_token.text,["if","while","switch"])?(this._output.space_before_token=this._options.space_before_conditional,n=x):l(this._flags.last_word,["await","async"])?this._output.space_before_token=!0:"import"===this._flags.last_token.text&&""===t.whitespace_before?this._output.space_before_token=!1:!l(this._flags.last_token.text,r)&&"catch"!==this._flags.last_token.text||(this._output.space_before_token=!0):this._flags.last_token.type===p.EQUALS||this._flags.last_token.type===p.OPERATOR?this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t):this._flags.last_token.type===p.WORD?(this._output.space_before_token=!1,e=this._tokens.peek(-3),this._options.space_after_named_function&&e&&(u=this._tokens.peek(-4),f(e,["async","function"])||"*"===e.text&&f(u,["async","function"])?this._output.space_before_token=!0:this._flags.mode===k&&("{"!==e.text&&","!==e.text&&("*"!==e.text||"{"!==u.text&&","!==u.text)||(this._output.space_before_token=!0)))):this.allow_wrap_or_preserved_newline(t),(this._flags.last_token.type===p.RESERVED&&("function"===this._flags.last_word||"typeof"===this._flags.last_word)||"*"===this._flags.last_token.text&&(l(this._last_last_text,["function","yield"])||this._flags.mode===k&&l(this._last_last_text,["{",","])))&&(this._output.space_before_token=this._options.space_after_anon_function);";"===this._flags.last_token.text||this._flags.last_token.type===p.START_BLOCK?this.print_newline():this._flags.last_token.type!==p.END_EXPR&&this._flags.last_token.type!==p.START_EXPR&&this._flags.last_token.type!==p.END_BLOCK&&"."!==this._flags.last_token.text&&this._flags.last_token.type!==p.COMMA||this.allow_wrap_or_preserved_newline(t,t.newlines),this.print_token(t),this.set_mode(n),this._options.space_in_paren&&(this._output.space_before_token=!0),this.indent()},T.prototype.handle_end_expr=function(t){for(;this._flags.mode===m;)this.restore_mode();this.handle_whitespace_and_comments(t),this._flags.multiline_frame&&this.allow_wrap_or_preserved_newline(t,"]"===t.text&&R(this._flags.mode)&&!this._options.keep_array_indentation),this._options.space_in_paren&&(this._flags.last_token.type!==p.START_EXPR||this._options.space_in_empty_paren?this._output.space_before_token=!0:(this._output.trim(),this._output.space_before_token=!1)),this.deindent(),this.print_token(t),this.restore_mode(),E(this._output,this._previous_flags),this._flags.do_while&&this._previous_flags.mode===x&&(this._previous_flags.mode=v,this._flags.do_block=!1,this._flags.do_while=!1)},T.prototype.handle_start_block=function(t){this.handle_whitespace_and_comments(t);var e=this._tokens.peek(),u=this._tokens.peek(1);"switch"===this._flags.last_word&&this._flags.last_token.type===p.END_EXPR?(this.set_mode(g),this._flags.in_case_statement=!0):this._flags.case_body?this.set_mode(g):u&&(l(u.text,[":",","])&&l(e.type,[p.STRING,p.WORD,p.RESERVED])||l(e.text,["get","set","..."])&&l(u.type,[p.WORD,p.RESERVED]))?l(this._last_last_text,["class","interface"])?this.set_mode(g):this.set_mode(k):(this._flags.last_token.type!==p.OPERATOR||"=>"!==this._flags.last_token.text)&&(l(this._flags.last_token.type,[p.EQUALS,p.START_EXPR,p.COMMA,p.OPERATOR])||f(this._flags.last_token,["return","throw","import","default"]))?this.set_mode(k):this.set_mode(g);u=!e.comments_before&&"}"===e.text,e=u&&"function"===this._flags.last_word&&this._flags.last_token.type===p.END_EXPR;if(this._options.brace_preserve_inline){var n=0,i=null;this._flags.inline_frame=!0;do{if((i=this._tokens.peek((n+=1)-1)).newlines){this._flags.inline_frame=!1;break}}while(i.type!==p.EOF&&(i.type!==p.END_BLOCK||i.opened!==t))}("expand"===this._options.brace_style||"none"===this._options.brace_style&&t.newlines)&&!this._flags.inline_frame?this._flags.last_token.type!==p.OPERATOR&&(e||this._flags.last_token.type===p.EQUALS||f(this._flags.last_token,c)&&"else"!==this._flags.last_token.text)?this._output.space_before_token=!0:this.print_newline(!1,!0):(!R(this._previous_flags.mode)||this._flags.last_token.type!==p.START_EXPR&&this._flags.last_token.type!==p.COMMA||(this._flags.last_token.type!==p.COMMA&&!this._options.space_in_paren||(this._output.space_before_token=!0),(this._flags.last_token.type===p.COMMA||this._flags.last_token.type===p.START_EXPR&&this._flags.inline_frame)&&(this.allow_wrap_or_preserved_newline(t),this._previous_flags.multiline_frame=this._previous_flags.multiline_frame||this._flags.multiline_frame,this._flags.multiline_frame=!1)),this._flags.last_token.type!==p.OPERATOR&&this._flags.last_token.type!==p.START_EXPR&&(this._flags.last_token.type!==p.START_BLOCK||this._flags.inline_frame?this._output.space_before_token=!0:this.print_newline())),this.print_token(t),this.indent(),u||this._options.brace_preserve_inline&&this._flags.inline_frame||this.print_newline()},T.prototype.handle_end_block=function(t){for(this.handle_whitespace_and_comments(t);this._flags.mode===m;)this.restore_mode();var e=this._flags.last_token.type===p.START_BLOCK;this._flags.inline_frame&&!e?this._output.space_before_token=!0:"expand"===this._options.brace_style?e||this.print_newline():e||(R(this._flags.mode)&&this._options.keep_array_indentation?(this._options.keep_array_indentation=!1,this.print_newline(),this._options.keep_array_indentation=!0):this.print_newline()),this.restore_mode(),this.print_token(t)},T.prototype.handle_word=function(t){if(t.type===p.RESERVED&&(l(t.text,["set","get"])&&this._flags.mode!==k||"import"===t.text&&"("===this._tokens.peek().text||l(t.text,["as","from"])&&!this._flags.import_block||this._flags.mode===k&&":"===this._tokens.peek().text)&&(t.type=p.WORD),this.start_of_statement(t)?f(this._flags.last_token,["var","let","const"])&&t.type===p.WORD&&(this._flags.declaration_statement=!0):!t.newlines||O(this._flags.mode)||this._flags.last_token.type===p.OPERATOR&&"--"!==this._flags.last_token.text&&"++"!==this._flags.last_token.text||this._flags.last_token.type===p.EQUALS||!this._options.preserve_newlines&&f(this._flags.last_token,["var","let","const","set","get"])?this.handle_whitespace_and_comments(t):(this.handle_whitespace_and_comments(t),this.print_newline()),this._flags.do_block&&!this._flags.do_while){if(a(t,"while"))return this._output.space_before_token=!0,this.print_token(t),this._output.space_before_token=!0,void(this._flags.do_while=!0);this.print_newline(),this._flags.do_block=!1}if(this._flags.if_block)if(!this._flags.else_block&&a(t,"else"))this._flags.else_block=!0;else{for(;this._flags.mode===m;)this.restore_mode();this._flags.if_block=!1,this._flags.else_block=!1}if(this._flags.in_case_statement&&f(t,["case","default"]))return this.print_newline(),this._flags.last_token.type!==p.END_BLOCK&&(this._flags.case_body||this._options.jslint_happy)&&this.deindent(),this._flags.case_body=!1,this.print_token(t),void(this._flags.in_case=!0);if(this._flags.last_token.type!==p.COMMA&&this._flags.last_token.type!==p.START_EXPR&&this._flags.last_token.type!==p.EQUALS&&this._flags.last_token.type!==p.OPERATOR||this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t),a(t,"function"))return(l(this._flags.last_token.text,["}",";"])||this._output.just_added_newline()&&!l(this._flags.last_token.text,["(","[","{",":","=",","])&&this._flags.last_token.type!==p.OPERATOR)&&(this._output.just_added_blankline()||t.comments_before||(this.print_newline(),this.print_newline(!0))),this._flags.last_token.type===p.RESERVED||this._flags.last_token.type===p.WORD?f(this._flags.last_token,["get","set","new","export"])||f(this._flags.last_token,A)||a(this._flags.last_token,"default")&&"export"===this._last_last_text||"declare"===this._flags.last_token.text?this._output.space_before_token=!0:this.print_newline():this._flags.last_token.type===p.OPERATOR||"="===this._flags.last_token.text?this._output.space_before_token=!0:!this._flags.multiline_frame&&(O(this._flags.mode)||R(this._flags.mode))||this.print_newline(),this.print_token(t),void(this._flags.last_word=t.text);var e="NONE";this._flags.last_token.type===p.END_BLOCK?this._previous_flags.inline_frame?e="SPACE":!f(t,["else","catch","finally","from"])||"expand"===this._options.brace_style||"end-expand"===this._options.brace_style||"none"===this._options.brace_style&&t.newlines?e="NEWLINE":(e="SPACE",this._output.space_before_token=!0):this._flags.last_token.type===p.SEMICOLON&&this._flags.mode===g?e="NEWLINE":this._flags.last_token.type===p.SEMICOLON&&O(this._flags.mode)?e="SPACE":this._flags.last_token.type===p.STRING?e="NEWLINE":this._flags.last_token.type===p.RESERVED||this._flags.last_token.type===p.WORD||"*"===this._flags.last_token.text&&(l(this._last_last_text,["function","yield"])||this._flags.mode===k&&l(this._last_last_text,["{",","]))?e="SPACE":this._flags.last_token.type===p.START_BLOCK?e=this._flags.inline_frame?"SPACE":"NEWLINE":this._flags.last_token.type===p.END_EXPR&&(this._output.space_before_token=!0,e="NEWLINE"),f(t,r)&&")"!==this._flags.last_token.text&&(e=this._flags.inline_frame||"else"===this._flags.last_token.text||"export"===this._flags.last_token.text?"SPACE":"NEWLINE"),f(t,["else","catch","finally"])?(this._flags.last_token.type!==p.END_BLOCK||this._previous_flags.mode!==g||"expand"===this._options.brace_style||"end-expand"===this._options.brace_style||"none"===this._options.brace_style&&t.newlines)&&!this._flags.inline_frame?this.print_newline():(this._output.trim(!0),"}"!==this._output.current_line.last()&&this.print_newline(),this._output.space_before_token=!0):"NEWLINE"===e?f(this._flags.last_token,c)||"declare"===this._flags.last_token.text&&f(t,["var","let","const"])?this._output.space_before_token=!0:this._flags.last_token.type!==p.END_EXPR?this._flags.last_token.type===p.START_EXPR&&f(t,["var","let","const"])||":"===this._flags.last_token.text||(a(t,"if")&&a(t.previous,"else")?this._output.space_before_token=!0:this.print_newline()):f(t,r)&&")"!==this._flags.last_token.text&&this.print_newline():this._flags.multiline_frame&&R(this._flags.mode)&&","===this._flags.last_token.text&&"}"===this._last_last_text?this.print_newline():"SPACE"===e&&(this._output.space_before_token=!0),!t.previous||t.previous.type!==p.WORD&&t.previous.type!==p.RESERVED||(this._output.space_before_token=!0),this.print_token(t),this._flags.last_word=t.text,t.type===p.RESERVED&&("do"===t.text?this._flags.do_block=!0:"if"===t.text?this._flags.if_block=!0:"import"===t.text?this._flags.import_block=!0:this._flags.import_block&&a(t,"from")&&(this._flags.import_block=!1))},T.prototype.handle_semicolon=function(t){this.start_of_statement(t)?this._output.space_before_token=!1:this.handle_whitespace_and_comments(t);for(var e=this._tokens.peek();!(this._flags.mode!==m||this._flags.if_block&&a(e,"else")||this._flags.do_block);)this.restore_mode();this._flags.import_block&&(this._flags.import_block=!1),this.print_token(t)},T.prototype.handle_string=function(t){t.text.startsWith("`")&&0===t.newlines&&""===t.whitespace_before&&(")"===t.previous.text||this._flags.last_token.type===p.WORD)||(this.start_of_statement(t)?this._output.space_before_token=!0:(this.handle_whitespace_and_comments(t),this._flags.last_token.type===p.RESERVED||this._flags.last_token.type===p.WORD||this._flags.inline_frame?this._output.space_before_token=!0:this._flags.last_token.type===p.COMMA||this._flags.last_token.type===p.START_EXPR||this._flags.last_token.type===p.EQUALS||this._flags.last_token.type===p.OPERATOR?this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t):!t.text.startsWith("`")||this._flags.last_token.type!==p.END_EXPR||"]"!==t.previous.text&&")"!==t.previous.text||0!==t.newlines?this.print_newline():this._output.space_before_token=!0)),this.print_token(t)},T.prototype.handle_equals=function(t){this.start_of_statement(t)||this.handle_whitespace_and_comments(t),this._flags.declaration_statement&&(this._flags.declaration_assignment=!0),this._output.space_before_token=!0,this.print_token(t),this._output.space_before_token=!0},T.prototype.handle_comma=function(t){this.handle_whitespace_and_comments(t,!0),this.print_token(t),this._output.space_before_token=!0,this._flags.declaration_statement?(O(this._flags.parent.mode)&&(this._flags.declaration_assignment=!1),this._flags.declaration_assignment?(this._flags.declaration_assignment=!1,this.print_newline(!1,!0)):this._options.comma_first&&this.allow_wrap_or_preserved_newline(t)):this._flags.mode===k||this._flags.mode===m&&this._flags.parent.mode===k?(this._flags.mode===m&&this.restore_mode(),this._flags.inline_frame||this.print_newline()):this._options.comma_first&&this.allow_wrap_or_preserved_newline(t)},T.prototype.handle_operator=function(t){var e="*"===t.text&&(f(this._flags.last_token,["function","yield"])||l(this._flags.last_token.type,[p.START_BLOCK,p.COMMA,p.END_BLOCK,p.SEMICOLON])),u=l(t.text,["-","+"])&&(l(this._flags.last_token.type,[p.START_BLOCK,p.START_EXPR,p.EQUALS,p.OPERATOR])||l(this._flags.last_token.text,r)||","===this._flags.last_token.text);if(this.start_of_statement(t)||this.handle_whitespace_and_comments(t,!e),f(this._flags.last_token,c))return this._output.space_before_token=!0,void this.print_token(t);if("*"!==t.text||this._flags.last_token.type!==p.DOT)if("::"!==t.text){if(this._flags.last_token.type===p.OPERATOR&&l(this._options.operator_position,b)&&this.allow_wrap_or_preserved_newline(t),":"===t.text&&this._flags.in_case)return this.print_token(t),this._flags.in_case=!1,this._flags.case_body=!0,void(this._tokens.peek().type!==p.START_BLOCK?(this.indent(),this.print_newline()):this._output.space_before_token=!0);var n=!0,i=!0,_=!1;if(":"===t.text?0===this._flags.ternary_depth?n=!1:(--this._flags.ternary_depth,_=!0):"?"===t.text&&(this._flags.ternary_depth+=1),!u&&!e&&this._options.preserve_newlines&&l(t.text,h)){var s=":"===t.text,a=s&&_,o=s&&!_;switch(this._options.operator_position){case d.before_newline:return this._output.space_before_token=!o,this.print_token(t),s&&!a||this.allow_wrap_or_preserved_newline(t),void(this._output.space_before_token=!0);case d.after_newline:return this._output.space_before_token=!0,!s||a?this._tokens.peek().newlines?this.print_newline(!1,!0):this.allow_wrap_or_preserved_newline(t):this._output.space_before_token=!1,this.print_token(t),void(this._output.space_before_token=!0);case d.preserve_newline:return o||this.allow_wrap_or_preserved_newline(t),n=!(this._output.just_added_newline()||o),this._output.space_before_token=n,this.print_token(t),void(this._output.space_before_token=!0)}}e?(this.allow_wrap_or_preserved_newline(t),n=!1,i=(e=this._tokens.peek())&&l(e.type,[p.WORD,p.RESERVED])):"..."===t.text?(this.allow_wrap_or_preserved_newline(t),n=this._flags.last_token.type===p.START_BLOCK,i=!1):(l(t.text,["--","++","!","~"])||u)&&(this._flags.last_token.type!==p.COMMA&&this._flags.last_token.type!==p.START_EXPR||this.allow_wrap_or_preserved_newline(t),i=n=!1,!t.newlines||"--"!==t.text&&"++"!==t.text||this.print_newline(!1,!0),";"===this._flags.last_token.text&&O(this._flags.mode)&&(n=!0),this._flags.last_token.type===p.RESERVED?n=!0:this._flags.last_token.type===p.END_EXPR?n=!("]"===this._flags.last_token.text&&("--"===t.text||"++"===t.text)):this._flags.last_token.type===p.OPERATOR&&(n=l(t.text,["--","-","++","+"])&&l(this._flags.last_token.text,["--","-","++","+"]),l(t.text,["+","-"])&&l(this._flags.last_token.text,["--","++"])&&(i=!0)),(this._flags.mode!==g||this._flags.inline_frame)&&this._flags.mode!==m||"{"!==this._flags.last_token.text&&";"!==this._flags.last_token.text||this.print_newline()),this._output.space_before_token=this._output.space_before_token||n,this.print_token(t),this._output.space_before_token=i}else this.print_token(t);else this.print_token(t)},T.prototype.handle_block_comment=function(t,e){return this._output.raw?(this._output.add_raw_token(t),void(t.directives&&"end"===t.directives.preserve&&(this._output.raw=this._options.test_output_raw))):t.directives?(this.print_newline(!1,e),this.print_token(t),"start"===t.directives.preserve&&(this._output.raw=!0),void this.print_newline(!1,!0)):void(o.newline.test(t.text)||t.newlines?this.print_block_commment(t,e):(this._output.space_before_token=!0,this.print_token(t),this._output.space_before_token=!0))},T.prototype.print_block_commment=function(t,e){var u,n,i,_=function(t){for(var e=[],u=(t=t.replace(o.allLineBreaks,"\n")).indexOf("\n");-1!==u;)e.push(t.substring(0,u)),u=(t=t.substring(u+1)).indexOf("\n");return t.length&&e.push(t),e}(t.text),s=t.whitespace_before,a=s.length;if(this.print_newline(!1,e),this.print_token_line_indentation(t),this._output.add_token(_[0]),this.print_newline(!1,e),1<_.length){for(n=function(t,e){for(var u=0;u<t.length;u++)if(t[u].trim().charAt(0)!==e)return!1;return!0}(_=_.slice(1),"*"),i=function(t,e){for(var u,n=0,i=t.length;n<i;n++)if((u=t[n])&&0!==u.indexOf(e))return!1;return!0}(_,s),n&&(this._flags.alignment=1),u=0;u<_.length;u++)n?(this.print_token_line_indentation(t),this._output.add_token(_[u].replace(/^\s+/g,""))):i&&_[u]?(this.print_token_line_indentation(t),this._output.add_token(_[u].substring(a))):(this._output.current_line.set_indent(-1),this._output.add_token(_[u])),this.print_newline(!1,e);this._flags.alignment=0}},T.prototype.handle_comment=function(t,e){t.newlines?this.print_newline(!1,e):this._output.trim(!0),this._output.space_before_token=!0,this.print_token(t),this.print_newline(!1,e)},T.prototype.handle_dot=function(t){this.start_of_statement(t)||this.handle_whitespace_and_comments(t,!0),f(this._flags.last_token,c)?this._output.space_before_token=!1:this.allow_wrap_or_preserved_newline(t,")"===this._flags.last_token.text&&this._options.break_chained_methods),this._options.unindent_chained_methods&&this._output.just_added_newline()&&this.deindent(),this.print_token(t)},T.prototype.handle_unknown=function(t,e){this.print_token(t),"\n"===t.text[t.text.length-1]&&this.print_newline(!1,e)},T.prototype.handle_eof=function(t){for(;this._flags.mode===m;)this.restore_mode();this.handle_whitespace_and_comments(t)},t.exports.Beautifier=T},function(t){function i(t){this.__parent=t,this.__character_count=0,this.__indent_count=-1,this.__alignment_count=0,this.__wrap_point_index=0,this.__wrap_point_character_count=0,this.__wrap_point_indent_count=-1,this.__wrap_point_alignment_count=0,this.__items=[]}function u(t,e){this.__cache=[""],this.__indent_size=t.indent_size,this.__indent_string=t.indent_char,t.indent_with_tabs||(this.__indent_string=new Array(t.indent_size+1).join(t.indent_char)),e=e||"",0<t.indent_level&&(e=new Array(t.indent_level+1).join(this.__indent_string)),this.__base_string=e,this.__base_string_length=e.length}function e(t,e){this.__indent_cache=new u(t,e),this.raw=!1,this._end_with_newline=t.end_with_newline,this.indent_size=t.indent_size,this.wrap_line_length=t.wrap_line_length,this.indent_empty_lines=t.indent_empty_lines,this.__lines=[],this.previous_line=null,this.current_line=null,this.next_line=new i(this),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=!1,this.__add_outputline()}i.prototype.clone_empty=function(){var t=new i(this.__parent);return t.set_indent(this.__indent_count,this.__alignment_count),t},i.prototype.item=function(t){return t<0?this.__items[this.__items.length+t]:this.__items[t]},i.prototype.has_match=function(t){for(var e=this.__items.length-1;0<=e;e--)if(this.__items[e].match(t))return!0;return!1},i.prototype.set_indent=function(t,e){this.is_empty()&&(this.__indent_count=t||0,this.__alignment_count=e||0,this.__character_count=this.__parent.get_indent_size(this.__indent_count,this.__alignment_count))},i.prototype._set_wrap_point=function(){this.__parent.wrap_line_length&&(this.__wrap_point_index=this.__items.length,this.__wrap_point_character_count=this.__character_count,this.__wrap_point_indent_count=this.__parent.next_line.__indent_count,this.__wrap_point_alignment_count=this.__parent.next_line.__alignment_count)},i.prototype._should_wrap=function(){return this.__wrap_point_index&&this.__character_count>this.__parent.wrap_line_length&&this.__wrap_point_character_count>this.__parent.next_line.__character_count},i.prototype._allow_wrap=function(){if(this._should_wrap()){this.__parent.add_new_line();var t=this.__parent.current_line;return t.set_indent(this.__wrap_point_indent_count,this.__wrap_point_alignment_count),t.__items=this.__items.slice(this.__wrap_point_index),this.__items=this.__items.slice(0,this.__wrap_point_index),t.__character_count+=this.__character_count-this.__wrap_point_character_count,this.__character_count=this.__wrap_point_character_count," "===t.__items[0]&&(t.__items.splice(0,1),--t.__character_count),!0}return!1},i.prototype.is_empty=function(){return 0===this.__items.length},i.prototype.last=function(){return this.is_empty()?null:this.__items[this.__items.length-1]},i.prototype.push=function(t){this.__items.push(t);var e=t.lastIndexOf("\n");-1!==e?this.__character_count=t.length-e:this.__character_count+=t.length},i.prototype.pop=function(){var t=null;return this.is_empty()||(t=this.__items.pop(),this.__character_count-=t.length),t},i.prototype._remove_indent=function(){0<this.__indent_count&&(--this.__indent_count,this.__character_count-=this.__parent.indent_size)},i.prototype._remove_wrap_indent=function(){0<this.__wrap_point_indent_count&&--this.__wrap_point_indent_count},i.prototype.trim=function(){for(;" "===this.last();)this.__items.pop(),--this.__character_count},i.prototype.toString=function(){var t="";return this.is_empty()?this.__parent.indent_empty_lines&&(t=this.__parent.get_indent_string(this.__indent_count)):(t=this.__parent.get_indent_string(this.__indent_count,this.__alignment_count),t+=this.__items.join("")),t},u.prototype.get_indent_size=function(t,e){var u=this.__base_string_length;return t<0&&(u=0),u+=t*this.__indent_size,u+=e=e||0},u.prototype.get_indent_string=function(t,e){var u=this.__base_string;return 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t.concat&&(e=t.concat()):"string"==typeof t&&(e=t.split(/[^a-zA-Z0-9_\/\-]+/)),e},e.prototype._get_boolean=function(t,e){t=this.raw_options[t];return void 0===t?!!e:!!t},e.prototype._get_characters=function(t,e){t=this.raw_options[t],e=e||"";return e="string"==typeof t?t.replace(/\\r/,"\r").replace(/\\n/,"\n").replace(/\\t/,"\t"):e},e.prototype._get_number=function(t,e){t=this.raw_options[t];e=parseInt(e,10),isNaN(e)&&(e=0);t=parseInt(t,10);return t=isNaN(t)?e:t},e.prototype._get_selection=function(t,e,u){u=this._get_selection_list(t,e,u);if(1!==u.length)throw new Error("Invalid Option Value: The option '"+t+"' can only be one of the following values:\n"+e+"\nYou passed in: '"+this.raw_options[t]+"'");return u[0]},e.prototype._get_selection_list=function(t,e,u){if(!e||0===e.length)throw new Error("Selection list cannot be empty.");if(u=u||[e[0]],!this._is_valid_selection(u,e))throw new Error("Invalid Default Value!");u=this._get_array(t,u);if(!this._is_valid_selection(u,e))throw new Error("Invalid Option Value: The option '"+t+"' can contain only the following values:\n"+e+"\nYou passed in: '"+this.raw_options[t]+"'");return u},e.prototype._is_valid_selection=function(t,e){return t.length&&e.length&&!t.some(function(t){return-1===e.indexOf(t)})},t.exports.Options=e,t.exports.normalizeOpts=i,t.exports.mergeOpts=u},function(t,e,u){var _=u(8).InputScanner,n=u(9).Tokenizer,i=u(9).TOKEN,s=u(13).Directives,r=u(4),a=u(12).Pattern,o=u(14).TemplatablePattern;function h(t,e){return-1!==e.indexOf(t)}var p={START_EXPR:"TK_START_EXPR",END_EXPR:"TK_END_EXPR",START_BLOCK:"TK_START_BLOCK",END_BLOCK:"TK_END_BLOCK",WORD:"TK_WORD",RESERVED:"TK_RESERVED",SEMICOLON:"TK_SEMICOLON",STRING:"TK_STRING",EQUALS:"TK_EQUALS",OPERATOR:"TK_OPERATOR",COMMA:"TK_COMMA",BLOCK_COMMENT:"TK_BLOCK_COMMENT",COMMENT:"TK_COMMENT",DOT:"TK_DOT",UNKNOWN:"TK_UNKNOWN",START:i.START,RAW:i.RAW,EOF:i.EOF},l=new s(/\/\*/,/\*\//),f=/0[xX][0123456789abcdefABCDEF_]*n?|0[oO][01234567_]*n?|0[bB][01_]*n?|\d[\d_]*n|(?:\.\d[\d_]*|\d[\d_]*\.?[\d_]*)(?:[eE][+-]?[\d_]+)?/,c=/[0-9]/,d=/[^\d\.]/,u=">>> === !== << && >= ** != == <= >> || ?? |> < / - + > : & % ? ^ | *".split(" "),i=">>>= ... >>= <<= === >>> !== **= => ^= :: /= << <= == && -= >= >> != -- += ** || ?? ++ %= &= *= |= |> = ! ? > < : / ^ - + * & % ~ |";i=(i="\\?\\.(?!\\d) "+(i=i.replace(/[-[\]{}()*+?.,\\^$|#]/g,"\\$&"))).replace(/ /g,"|");var b,g=new RegExp(i),s="continue,try,throw,return,var,let,const,if,switch,case,default,for,while,break,function,import,export".split(","),i=s.concat(["do","in","of","else","get","set","new","catch","finally","typeof","yield","async","await","from","as"]),m=new RegExp("^(?:"+i.join("|")+")$"),i=function(t,e){n.call(this,t,e),this._patterns.whitespace=this._patterns.whitespace.matching(/\u00A0\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff/.source,/\u2028\u2029/.source);t=new a(this._input),e=new o(this._input).read_options(this._options);this.__patterns={template:e,identifier:e.starting_with(r.identifier).matching(r.identifierMatch),number:t.matching(f),punct:t.matching(g),comment:t.starting_with(/\/\//).until(/[\n\r\u2028\u2029]/),block_comment:t.starting_with(/\/\*/).until_after(/\*\//),html_comment_start:t.matching(/<!--/),html_comment_end:t.matching(/-->/),include:t.starting_with(/#include/).until_after(r.lineBreak),shebang:t.starting_with(/#!/).until_after(r.lineBreak),xml:t.matching(/[\s\S]*?<(\/?)([-a-zA-Z:0-9_.]+|{[\s\S]+?}|!\[CDATA\[[\s\S]*?\]\]|)(\s+{[\s\S]+?}|\s+[-a-zA-Z:0-9_.]+|\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{[\s\S]+?}))*\s*(\/?)\s*>/),single_quote:e.until(/['\\\n\r\u2028\u2029]/),double_quote:e.until(/["\\\n\r\u2028\u2029]/),template_text:e.until(/[`\\$]/),template_expression:e.until(/[`}\\]/)}};(i.prototype=new n)._is_comment=function(t){return t.type===p.COMMENT||t.type===p.BLOCK_COMMENT||t.type===p.UNKNOWN},i.prototype._is_opening=function(t){return t.type===p.START_BLOCK||t.type===p.START_EXPR},i.prototype._is_closing=function(t,e){return(t.type===p.END_BLOCK||t.type===p.END_EXPR)&&e&&("]"===t.text&&"["===e.text||")"===t.text&&"("===e.text||"}"===t.text&&"{"===e.text)},i.prototype._reset=function(){b=!1},i.prototype._get_next_token=function(t,e){this._readWhitespace();var u=this._input.peek();return null===u?this._create_token(p.EOF,""):this._read_non_javascript(u)||this._read_string(u)||this._read_word(t)||this._read_singles(u)||this._read_comment(u)||this._read_regexp(u,t)||this._read_xml(u,t)||this._read_punctuation()||this._create_token(p.UNKNOWN,this._input.next())},i.prototype._read_word=function(t){var e=this.__patterns.identifier.read();return""!==e?(e=e.replace(r.allLineBreaks,"\n"),t.type!==p.DOT&&(t.type!==p.RESERVED||"set"!==t.text&&"get"!==t.text)&&m.test(e)?"in"===e||"of"===e?this._create_token(p.OPERATOR,e):this._create_token(p.RESERVED,e):this._create_token(p.WORD,e)):""!==(e=this.__patterns.number.read())?this._create_token(p.WORD,e):void 0},i.prototype._read_singles=function(t){var e=null;return"("===t||"["===t?e=this._create_token(p.START_EXPR,t):")"===t||"]"===t?e=this._create_token(p.END_EXPR,t):"{"===t?e=this._create_token(p.START_BLOCK,t):"}"===t?e=this._create_token(p.END_BLOCK,t):";"===t?e=this._create_token(p.SEMICOLON,t):"."===t&&d.test(this._input.peek(1))?e=this._create_token(p.DOT,t):","===t&&(e=this._create_token(p.COMMA,t)),e&&this._input.next(),e},i.prototype._read_punctuation=function(){var t=this.__patterns.punct.read();if(""!==t)return"="===t?this._create_token(p.EQUALS,t):"?."===t?this._create_token(p.DOT,t):this._create_token(p.OPERATOR,t)},i.prototype._read_non_javascript=function(t){var e="";if("#"===t){if(this._is_first_token()&&(e=this.__patterns.shebang.read()))return this._create_token(p.UNKNOWN,e.trim()+"\n");if(e=this.__patterns.include.read())return this._create_token(p.UNKNOWN,e.trim()+"\n");t=this._input.next();var u="#";if(this._input.hasNext()&&this._input.testChar(c)){for(;u+=t=this._input.next(),this._input.hasNext()&&"#"!==t&&"="!==t;);return"#"===t||("["===this._input.peek()&&"]"===this._input.peek(1)?(u+="[]",this._input.next(),this._input.next()):"{"===this._input.peek()&&"}"===this._input.peek(1)&&(u+="{}",this._input.next(),this._input.next())),this._create_token(p.WORD,u)}this._input.back()}else if("<"===t&&this._is_first_token()){if(e=this.__patterns.html_comment_start.read()){for(;this._input.hasNext()&&!this._input.testChar(r.newline);)e+=this._input.next();return b=!0,this._create_token(p.COMMENT,e)}}else if(b&&"-"===t&&(e=this.__patterns.html_comment_end.read()))return b=!1,this._create_token(p.COMMENT,e);return null},i.prototype._read_comment=function(t){var e,u=null;return"/"===t&&(e="","*"===this._input.peek(1)?(e=this.__patterns.block_comment.read(),(t=l.get_directives(e))&&"start"===t.ignore&&(e+=l.readIgnored(this._input)),e=e.replace(r.allLineBreaks,"\n"),(u=this._create_token(p.BLOCK_COMMENT,e)).directives=t):"/"===this._input.peek(1)&&(e=this.__patterns.comment.read(),u=this._create_token(p.COMMENT,e))),u},i.prototype._read_string=function(t){if("`"!==t&&"'"!==t&&'"'!==t)return null;var e=this._input.next();return this.has_char_escapes=!1,e+="`"===t?this._read_string_recursive("`",!0,"${"):this._read_string_recursive(t),this.has_char_escapes&&this._options.unescape_strings&&(e=function(t){var e="",u=0,n=new _(t),i=null;for(;n.hasNext();)if((i=n.match(/([\s]|[^\\]|\\\\)+/g))&&(e+=i[0]),"\\"===n.peek()){if(n.next(),"x"===n.peek())i=n.match(/x([0-9A-Fa-f]{2})/g);else{if("u"!==n.peek()){e+="\\",n.hasNext()&&(e+=n.next());continue}i=n.match(/u([0-9A-Fa-f]{4})/g)}if(!i)return t;if(126<(u=parseInt(i[1],16))&&u<=255&&0===i[0].indexOf("x"))return t;e+=0<=u&&u<32?"\\"+i[0]:34===u||39===u||92===u?"\\"+String.fromCharCode(u):String.fromCharCode(u)}return e}(e)),this._input.peek()===t&&(e+=this._input.next()),e=e.replace(r.allLineBreaks,"\n"),this._create_token(p.STRING,e)},i.prototype._allow_regexp_or_xml=function(t){return t.type===p.RESERVED&&h(t.text,["return","case","throw","else","do","typeof","yield"])||t.type===p.END_EXPR&&")"===t.text&&t.opened.previous.type===p.RESERVED&&h(t.opened.previous.text,["if","while","for"])||h(t.type,[p.COMMENT,p.START_EXPR,p.START_BLOCK,p.START,p.END_BLOCK,p.OPERATOR,p.EQUALS,p.EOF,p.SEMICOLON,p.COMMA])},i.prototype._read_regexp=function(t,e){if("/"===t&&this._allow_regexp_or_xml(e)){for(var u=this._input.next(),n=!1,i=!1;this._input.hasNext()&&(n||i||this._input.peek()!==t)&&!this._input.testChar(r.newline);)u+=this._input.peek(),n?n=!1:(n="\\"===this._input.peek(),"["===this._input.peek()?i=!0:"]"===this._input.peek()&&(i=!1)),this._input.next();return this._input.peek()===t&&(u+=this._input.next(),u+=this._input.read(r.identifier)),this._create_token(p.STRING,u)}return null},i.prototype._read_xml=function(t,e){if(this._options.e4x&&"<"===t&&this._allow_regexp_or_xml(e)){var u="",n=this.__patterns.xml.read_match();if(n){for(var i=n[2].replace(/^{\s+/,"{").replace(/\s+}$/,"}"),_=0===i.indexOf("{"),s=0;n;){var a=!!n[1],o=n[2];if(!(!!n[n.length-1]||"![CDATA["===o.slice(0,8))&&(o===i||_&&o.replace(/^{\s+/,"{").replace(/\s+}$/,"}"))&&(a?--s:++s),u+=n[0],s<=0)break;n=this.__patterns.xml.read_match()}return n||(u+=this._input.match(/[\s\S]*/g)[0]),u=u.replace(r.allLineBreaks,"\n"),this._create_token(p.STRING,u)}}return null},i.prototype._read_string_recursive=function(t,e,u){var n,i;"'"===t?i=this.__patterns.single_quote:'"'===t?i=this.__patterns.double_quote:"`"===t?i=this.__patterns.template_text:"}"===t&&(i=this.__patterns.template_expression);for(var _=i.read(),s="";this._input.hasNext();){if((s=this._input.next())===t||!e&&r.newline.test(s)){this._input.back();break}"\\"===s&&this._input.hasNext()?("x"===(n=this._input.peek())||"u"===n?this.has_char_escapes=!0:"\r"===n&&"\n"===this._input.peek(1)&&this._input.next(),s+=this._input.next()):u&&("${"===u&&"$"===s&&"{"===this._input.peek()&&(s+=this._input.next()),u===s&&(s+="`"===t?this._read_string_recursive("}",e,"`"):this._read_string_recursive("`",e,"${"),this._input.hasNext()&&(s+=this._input.next()))),_+=s+=i.read()}return _},t.exports.Tokenizer=i,t.exports.TOKEN=p,t.exports.positionable_operators=u.slice(),t.exports.line_starters=s.slice()},function(t){var n=RegExp.prototype.hasOwnProperty("sticky");function e(t){this.__input=t||"",this.__input_length=this.__input.length,this.__position=0}e.prototype.restart=function(){this.__position=0},e.prototype.back=function(){0<this.__position&&--this.__position},e.prototype.hasNext=function(){return this.__position<this.__input_length},e.prototype.next=function(){var t=null;return this.hasNext()&&(t=this.__input.charAt(this.__position),this.__position+=1),t},e.prototype.peek=function(t){var e=null;return t=t||0,e=0<=(t+=this.__position)&&t<this.__input_length?this.__input.charAt(t):e},e.prototype.__match=function(t,e){t.lastIndex=e;var u=t.exec(this.__input);return!u||n&&t.sticky||u.index!==e&&(u=null),u},e.prototype.test=function(t,e){return e=e||0,0<=(e+=this.__position)&&e<this.__input_length&&!!this.__match(t,e)},e.prototype.testChar=function(t,e){e=this.peek(e);return t.lastIndex=0,null!==e&&t.test(e)},e.prototype.match=function(t){t=this.__match(t,this.__position);return t?this.__position+=t[0].length:t=null,t},e.prototype.read=function(t,e,u){var n,i="";return t&&(n=this.match(t))&&(i+=n[0]),!e||!n&&t||(i+=this.readUntil(e,u)),i},e.prototype.readUntil=function(t,e){var u,n=this.__position;t.lastIndex=this.__position;t=t.exec(this.__input);return t?(n=t.index,e&&(n+=t[0].length)):n=this.__input_length,u=this.__input.substring(this.__position,n),this.__position=n,u},e.prototype.readUntilAfter=function(t){return this.readUntil(t,!0)},e.prototype.get_regexp=function(t,e){var u=null,e=e&&n?"y":"g";return"string"==typeof t&&""!==t?u=new RegExp(t,e):t&&(u=new RegExp(t.source,e)),u},e.prototype.get_literal_regexp=function(t){return RegExp(t.replace(/[-\/\\^$*+?.()|[\]{}]/g,"\\$&"))},e.prototype.peekUntilAfter=function(t){var e=this.__position,t=this.readUntilAfter(t);return this.__position=e,t},e.prototype.lookBack=function(t){var e=this.__position-1;return e>=t.length&&this.__input.substring(e-t.length,e).toLowerCase()===t},t.exports.InputScanner=e},function(t,e,u){var n=u(8).InputScanner,_=u(3).Token,s=u(10).TokenStream,i=u(11).WhitespacePattern,a={START:"TK_START",RAW:"TK_RAW",EOF:"TK_EOF"},u=function(t,e){this._input=new n(t),this._options=e||{},this.__tokens=null,this._patterns={},this._patterns.whitespace=new i(this._input)};u.prototype.tokenize=function(){var t;this._input.restart(),this.__tokens=new s,this._reset();for(var e=new _(a.START,""),u=null,n=[],i=new s;e.type!==a.EOF;){for(t=this._get_next_token(e,u);this._is_comment(t);)i.add(t),t=this._get_next_token(e,u);i.isEmpty()||(t.comments_before=i,i=new s),t.parent=u,this._is_opening(t)?(n.push(u),u=t):u&&this._is_closing(t,u)&&((t.opened=u).closed=t,u=n.pop(),t.parent=u),(t.previous=e).next=t,this.__tokens.add(t),e=t}return this.__tokens},u.prototype._is_first_token=function(){return this.__tokens.isEmpty()},u.prototype._reset=function(){},u.prototype._get_next_token=function(t,e){this._readWhitespace();var u=this._input.read(/.+/g);return u?this._create_token(a.RAW,u):this._create_token(a.EOF,"")},u.prototype._is_comment=function(t){return!1},u.prototype._is_opening=function(t){return!1},u.prototype._is_closing=function(t,e){return!1},u.prototype._create_token=function(t,e){return new _(t,e,this._patterns.whitespace.newline_count,this._patterns.whitespace.whitespace_before_token)},u.prototype._readWhitespace=function(){return this._patterns.whitespace.read()},t.exports.Tokenizer=u,t.exports.TOKEN=a},function(t){function e(t){this.__tokens=[],this.__tokens_length=this.__tokens.length,this.__position=0,this.__parent_token=t}e.prototype.restart=function(){this.__position=0},e.prototype.isEmpty=function(){return 0===this.__tokens_length},e.prototype.hasNext=function(){return this.__position<this.__tokens_length},e.prototype.next=function(){var t=null;return this.hasNext()&&(t=this.__tokens[this.__position],this.__position+=1),t},e.prototype.peek=function(t){var e=null;return t=t||0,e=0<=(t+=this.__position)&&t<this.__tokens_length?this.__tokens[t]:e},e.prototype.add=function(t){this.__parent_token&&(t.parent=this.__parent_token),this.__tokens.push(t),this.__tokens_length+=1},t.exports.TokenStream=e},function(t,e,u){var n=u(12).Pattern;function i(t,e){n.call(this,t,e),e?this._line_regexp=this._input.get_regexp(e._line_regexp):this.__set_whitespace_patterns("",""),this.newline_count=0,this.whitespace_before_token=""}(i.prototype=new n).__set_whitespace_patterns=function(t,e){this._match_pattern=this._input.get_regexp("["+(t+="\\t ")+(e+="\\n\\r")+"]+",!0),this._newline_regexp=this._input.get_regexp("\\r\\n|["+e+"]")},i.prototype.read=function(){this.newline_count=0,this.whitespace_before_token="";var t,e=this._input.read(this._match_pattern);return" "===e?this.whitespace_before_token=" ":e&&(t=this.__split(this._newline_regexp,e),this.newline_count=t.length-1,this.whitespace_before_token=t[this.newline_count]),e},i.prototype.matching=function(t,e){var u=this._create();return u.__set_whitespace_patterns(t,e),u._update(),u},i.prototype._create=function(){return new i(this._input,this)},i.prototype.__split=function(t,e){for(var u=t.lastIndex=0,n=[],i=t.exec(e);i;)n.push(e.substring(u,i.index)),u=i.index+i[0].length,i=t.exec(e);return u<e.length?n.push(e.substring(u,e.length)):n.push(""),n},t.exports.WhitespacePattern=i},function(t){function e(t,e){this._input=t,this._starting_pattern=null,this._match_pattern=null,this._until_pattern=null,this._until_after=!1,e&&(this._starting_pattern=this._input.get_regexp(e._starting_pattern,!0),this._match_pattern=this._input.get_regexp(e._match_pattern,!0),this._until_pattern=this._input.get_regexp(e._until_pattern),this._until_after=e._until_after)}e.prototype.read=function(){var t=this._input.read(this._starting_pattern);return this._starting_pattern&&!t||(t+=this._input.read(this._match_pattern,this._until_pattern,this._until_after)),t},e.prototype.read_match=function(){return this._input.match(this._match_pattern)},e.prototype.until_after=function(t){var e=this._create();return e._until_after=!0,e._until_pattern=this._input.get_regexp(t),e._update(),e},e.prototype.until=function(t){var e=this._create();return e._until_after=!1,e._until_pattern=this._input.get_regexp(t),e._update(),e},e.prototype.starting_with=function(t){var e=this._create();return e._starting_pattern=this._input.get_regexp(t,!0),e._update(),e},e.prototype.matching=function(t){var e=this._create();return e._match_pattern=this._input.get_regexp(t,!0),e._update(),e},e.prototype._create=function(){return new e(this._input,this)},e.prototype._update=function(){},t.exports.Pattern=e},function(t){function e(t,e){t="string"==typeof t?t:t.source,e="string"==typeof e?e:e.source,this.__directives_block_pattern=new RegExp(t+/ beautify( \w+[:]\w+)+ /.source+e,"g"),this.__directive_pattern=/ (\w+)[:](\w+)/g,this.__directives_end_ignore_pattern=new RegExp(t+/\sbeautify\signore:end\s/.source+e,"g")}e.prototype.get_directives=function(t){if(!t.match(this.__directives_block_pattern))return null;var e={};this.__directive_pattern.lastIndex=0;for(var u=this.__directive_pattern.exec(t);u;)e[u[1]]=u[2],u=this.__directive_pattern.exec(t);return e},e.prototype.readIgnored=function(t){return t.readUntilAfter(this.__directives_end_ignore_pattern)},t.exports.Directives=e},function(t,e,u){var n=u(12).Pattern,i={django:!1,erb:!1,handlebars:!1,php:!1,smarty:!1};function _(t,e){n.call(this,t,e),this.__template_pattern=null,this._disabled=Object.assign({},i),this._excluded=Object.assign({},i),e&&(this.__template_pattern=this._input.get_regexp(e.__template_pattern),this._excluded=Object.assign(this._excluded,e._excluded),this._disabled=Object.assign(this._disabled,e._disabled));t=new n(t);this.__patterns={handlebars_comment:t.starting_with(/{{!--/).until_after(/--}}/),handlebars_unescaped:t.starting_with(/{{{/).until_after(/}}}/),handlebars:t.starting_with(/{{/).until_after(/}}/),php:t.starting_with(/<\?(?:[= ]|php)/).until_after(/\?>/),erb:t.starting_with(/<%[^%]/).until_after(/[^%]%>/),django:t.starting_with(/{%/).until_after(/%}/),django_value:t.starting_with(/{{/).until_after(/}}/),django_comment:t.starting_with(/{#/).until_after(/#}/),smarty:t.starting_with(/{(?=[^}{\s\n])/).until_after(/[^\s\n]}/),smarty_comment:t.starting_with(/{\*/).until_after(/\*}/),smarty_literal:t.starting_with(/{literal}/).until_after(/{\/literal}/)}}(_.prototype=new n)._create=function(){return new _(this._input,this)},_.prototype._update=function(){this.__set_templated_pattern()},_.prototype.disable=function(t){var e=this._create();return e._disabled[t]=!0,e._update(),e},_.prototype.read_options=function(t){var e,u=this._create();for(e in i)u._disabled[e]=-1===t.templating.indexOf(e);return u._update(),u},_.prototype.exclude=function(t){var e=this._create();return e._excluded[t]=!0,e._update(),e},_.prototype.read=function(){for(var t="",t=this._match_pattern?this._input.read(this._starting_pattern):this._input.read(this._starting_pattern,this.__template_pattern),e=this._read_template();e;)this._match_pattern?e+=this._input.read(this._match_pattern):e+=this._input.readUntil(this.__template_pattern),t+=e,e=this._read_template();return this._until_after&&(t+=this._input.readUntilAfter(this._until_pattern)),t},_.prototype.__set_templated_pattern=function(){var t=[];this._disabled.php||t.push(this.__patterns.php._starting_pattern.source),this._disabled.handlebars||t.push(this.__patterns.handlebars._starting_pattern.source),this._disabled.erb||t.push(this.__patterns.erb._starting_pattern.source),this._disabled.django||(t.push(this.__patterns.django._starting_pattern.source),t.push(this.__patterns.django_value._starting_pattern.source),t.push(this.__patterns.django_comment._starting_pattern.source)),this._disabled.smarty||t.push(this.__patterns.smarty._starting_pattern.source),this._until_pattern&&t.push(this._until_pattern.source),this.__template_pattern=this._input.get_regexp("(?:"+t.join("|")+")")},_.prototype._read_template=function(){var t,e="",u=this._input.peek();return"<"===u?(t=this._input.peek(1),this._disabled.php||this._excluded.php||"?"!==t||(e=e||this.__patterns.php.read()),this._disabled.erb||this._excluded.erb||"%"!==t||(e=e||this.__patterns.erb.read())):"{"===u&&(this._disabled.handlebars||this._excluded.handlebars||(e=(e=(e=e||this.__patterns.handlebars_comment.read())||this.__patterns.handlebars_unescaped.read())||this.__patterns.handlebars.read()),this._disabled.django||(this._excluded.django||this._excluded.handlebars||(e=e||this.__patterns.django_value.read()),this._excluded.django||(e=(e=e||this.__patterns.django_comment.read())||this.__patterns.django.read())),this._disabled.smarty||this._disabled.django&&this._disabled.handlebars&&(e=(e=(e=e||this.__patterns.smarty_comment.read())||this.__patterns.smarty_literal.read())||this.__patterns.smarty.read())),e},t.exports.TemplatablePattern=_}],i={};var t=function t(e){var u=i[e];if(void 0!==u)return u.exports;u=i[e]={exports:{}};return n[e](u,u.exports,t),u.exports}(0);e=t}();var t=e;"function"==typeof define&&define.amd?define([],function(){return{js_beautify:t}}):"undefined"!=typeof exports?exports.js_beautify=t:"undefined"!=typeof window?window.js_beautify=t:"undefined"!=typeof global&&(global.js_beautify=t)}();
/* --------------------------------------------------------------
         js/libs/codemirror/addon/dialog/dialog.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// Open simple dialogs on top of an editor. Relies on dialog.css.

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  function dialogDiv(cm, template, bottom) {
    var wrap = cm.getWrapperElement();
    var dialog;
    dialog = wrap.appendChild(document.createElement("div"));
    if (bottom)
      dialog.className = "CodeMirror-dialog CodeMirror-dialog-bottom";
    else
      dialog.className = "CodeMirror-dialog CodeMirror-dialog-top";

    if (typeof template == "string") {
      dialog.innerHTML = template;
    } else { // Assuming it's a detached DOM element.
      dialog.appendChild(template);
    }
    CodeMirror.addClass(wrap, 'dialog-opened');
    return dialog;
  }

  function closeNotification(cm, newVal) {
    if (cm.state.currentNotificationClose)
      cm.state.currentNotificationClose();
    cm.state.currentNotificationClose = newVal;
  }

  CodeMirror.defineExtension("openDialog", function(template, callback, options) {
    if (!options) options = {};

    closeNotification(this, null);

    var dialog = dialogDiv(this, template, options.bottom);
    var closed = false, me = this;
    function close(newVal) {
      if (typeof newVal == 'string') {
        inp.value = newVal;
      } else {
        if (closed) return;
        closed = true;
        CodeMirror.rmClass(dialog.parentNode, 'dialog-opened');
        dialog.parentNode.removeChild(dialog);
        me.focus();

        if (options.onClose) options.onClose(dialog);
      }
    }

    var inp = dialog.getElementsByTagName("input")[0], button;
    if (inp) {
      inp.focus();

      if (options.value) {
        inp.value = options.value;
        if (options.selectValueOnOpen !== false) {
          inp.select();
        }
      }

      if (options.onInput)
        CodeMirror.on(inp, "input", function(e) { options.onInput(e, inp.value, close);});
      if (options.onKeyUp)
        CodeMirror.on(inp, "keyup", function(e) {options.onKeyUp(e, inp.value, close);});

      CodeMirror.on(inp, "keydown", function(e) {
        if (options && options.onKeyDown && options.onKeyDown(e, inp.value, close)) { return; }
        if (e.keyCode == 27 || (options.closeOnEnter !== false && e.keyCode == 13)) {
          inp.blur();
          CodeMirror.e_stop(e);
          close();
        }
        if (e.keyCode == 13) callback(inp.value, e);
      });

      if (options.closeOnBlur !== false) CodeMirror.on(inp, "blur", close);
    } else if (button = dialog.getElementsByTagName("button")[0]) {
      CodeMirror.on(button, "click", function() {
        close();
        me.focus();
      });

      if (options.closeOnBlur !== false) CodeMirror.on(button, "blur", close);

      button.focus();
    }
    return close;
  });

  CodeMirror.defineExtension("openConfirm", function(template, callbacks, options) {
    closeNotification(this, null);
    var dialog = dialogDiv(this, template, options && options.bottom);
    var buttons = dialog.getElementsByTagName("button");
    var closed = false, me = this, blurring = 1;
    function close() {
      if (closed) return;
      closed = true;
      CodeMirror.rmClass(dialog.parentNode, 'dialog-opened');
      dialog.parentNode.removeChild(dialog);
      me.focus();
    }
    buttons[0].focus();
    for (var i = 0; i < buttons.length; ++i) {
      var b = buttons[i];
      (function(callback) {
        CodeMirror.on(b, "click", function(e) {
          CodeMirror.e_preventDefault(e);
          close();
          if (callback) callback(me);
        });
      })(callbacks[i]);
      CodeMirror.on(b, "blur", function() {
        --blurring;
        setTimeout(function() { if (blurring <= 0) close(); }, 200);
      });
      CodeMirror.on(b, "focus", function() { ++blurring; });
    }
  });

  /*
   * openNotification
   * Opens a notification, that can be closed with an optional timer
   * (default 5000ms timer) and always closes on click.
   *
   * If a notification is opened while another is opened, it will close the
   * currently opened one and open the new one immediately.
   */
  CodeMirror.defineExtension("openNotification", function(template, options) {
    closeNotification(this, close);
    var dialog = dialogDiv(this, template, options && options.bottom);
    var closed = false, doneTimer;
    var duration = options && typeof options.duration !== "undefined" ? options.duration : 5000;

    function close() {
      if (closed) return;
      closed = true;
      clearTimeout(doneTimer);
      CodeMirror.rmClass(dialog.parentNode, 'dialog-opened');
      dialog.parentNode.removeChild(dialog);
    }

    CodeMirror.on(dialog, 'click', function(e) {
      CodeMirror.e_preventDefault(e);
      close();
    });

    if (duration)
      doneTimer = setTimeout(close, duration);

    return close;
  });
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/edit/closebrackets.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  var defaults = {
    pairs: "()[]{}''\"\"",
    closeBefore: ")]}'\":;>",
    triples: "",
    explode: "[]{}"
  };

  var Pos = CodeMirror.Pos;

  CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) {
    if (old && old != CodeMirror.Init) {
      cm.removeKeyMap(keyMap);
      cm.state.closeBrackets = null;
    }
    if (val) {
      ensureBound(getOption(val, "pairs"))
      cm.state.closeBrackets = val;
      cm.addKeyMap(keyMap);
    }
  });

  function getOption(conf, name) {
    if (name == "pairs" && typeof conf == "string") return conf;
    if (typeof conf == "object" && conf[name] != null) return conf[name];
    return defaults[name];
  }

  var keyMap = {Backspace: handleBackspace, Enter: handleEnter};
  function ensureBound(chars) {
    for (var i = 0; i < chars.length; i++) {
      var ch = chars.charAt(i), key = "'" + ch + "'"
      if (!keyMap[key]) keyMap[key] = handler(ch)
    }
  }
  ensureBound(defaults.pairs + "`")

  function handler(ch) {
    return function(cm) { return handleChar(cm, ch); };
  }

  function getConfig(cm) {
    var deflt = cm.state.closeBrackets;
    if (!deflt || deflt.override) return deflt;
    var mode = cm.getModeAt(cm.getCursor());
    return mode.closeBrackets || deflt;
  }

  function handleBackspace(cm) {
    var conf = getConfig(cm);
    if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass;

    var pairs = getOption(conf, "pairs");
    var ranges = cm.listSelections();
    for (var i = 0; i < ranges.length; i++) {
      if (!ranges[i].empty()) return CodeMirror.Pass;
      var around = charsAround(cm, ranges[i].head);
      if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass;
    }
    for (var i = ranges.length - 1; i >= 0; i--) {
      var cur = ranges[i].head;
      cm.replaceRange("", Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1), "+delete");
    }
  }

  function handleEnter(cm) {
    var conf = getConfig(cm);
    var explode = conf && getOption(conf, "explode");
    if (!explode || cm.getOption("disableInput")) return CodeMirror.Pass;

    var ranges = cm.listSelections();
    for (var i = 0; i < ranges.length; i++) {
      if (!ranges[i].empty()) return CodeMirror.Pass;
      var around = charsAround(cm, ranges[i].head);
      if (!around || explode.indexOf(around) % 2 != 0) return CodeMirror.Pass;
    }
    cm.operation(function() {
      var linesep = cm.lineSeparator() || "\n";
      cm.replaceSelection(linesep + linesep, null);
      cm.execCommand("goCharLeft");
      ranges = cm.listSelections();
      for (var i = 0; i < ranges.length; i++) {
        var line = ranges[i].head.line;
        cm.indentLine(line, null, true);
        cm.indentLine(line + 1, null, true);
      }
    });
  }

  function contractSelection(sel) {
    var inverted = CodeMirror.cmpPos(sel.anchor, sel.head) > 0;
    return {anchor: new Pos(sel.anchor.line, sel.anchor.ch + (inverted ? -1 : 1)),
            head: new Pos(sel.head.line, sel.head.ch + (inverted ? 1 : -1))};
  }

  function handleChar(cm, ch) {
    var conf = getConfig(cm);
    if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass;

    var pairs = getOption(conf, "pairs");
    var pos = pairs.indexOf(ch);
    if (pos == -1) return CodeMirror.Pass;

    var closeBefore = getOption(conf,"closeBefore");

    var triples = getOption(conf, "triples");

    var identical = pairs.charAt(pos + 1) == ch;
    var ranges = cm.listSelections();
    var opening = pos % 2 == 0;

    var type;
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i], cur = range.head, curType;
      var next = cm.getRange(cur, Pos(cur.line, cur.ch + 1));
      if (opening && !range.empty()) {
        curType = "surround";
      } else if ((identical || !opening) && next == ch) {
        if (identical && stringStartsAfter(cm, cur))
          curType = "both";
        else if (triples.indexOf(ch) >= 0 && cm.getRange(cur, Pos(cur.line, cur.ch + 3)) == ch + ch + ch)
          curType = "skipThree";
        else
          curType = "skip";
      } else if (identical && cur.ch > 1 && triples.indexOf(ch) >= 0 &&
                 cm.getRange(Pos(cur.line, cur.ch - 2), cur) == ch + ch) {
        if (cur.ch > 2 && /\bstring/.test(cm.getTokenTypeAt(Pos(cur.line, cur.ch - 2)))) return CodeMirror.Pass;
        curType = "addFour";
      } else if (identical) {
        var prev = cur.ch == 0 ? " " : cm.getRange(Pos(cur.line, cur.ch - 1), cur)
        if (!CodeMirror.isWordChar(next) && prev != ch && !CodeMirror.isWordChar(prev)) curType = "both";
        else return CodeMirror.Pass;
      } else if (opening && (next.length === 0 || /\s/.test(next) || closeBefore.indexOf(next) > -1)) {
        curType = "both";
      } else {
        return CodeMirror.Pass;
      }
      if (!type) type = curType;
      else if (type != curType) return CodeMirror.Pass;
    }

    var left = pos % 2 ? pairs.charAt(pos - 1) : ch;
    var right = pos % 2 ? ch : pairs.charAt(pos + 1);
    cm.operation(function() {
      if (type == "skip") {
        cm.execCommand("goCharRight");
      } else if (type == "skipThree") {
        for (var i = 0; i < 3; i++)
          cm.execCommand("goCharRight");
      } else if (type == "surround") {
        var sels = cm.getSelections();
        for (var i = 0; i < sels.length; i++)
          sels[i] = left + sels[i] + right;
        cm.replaceSelections(sels, "around");
        sels = cm.listSelections().slice();
        for (var i = 0; i < sels.length; i++)
          sels[i] = contractSelection(sels[i]);
        cm.setSelections(sels);
      } else if (type == "both") {
        cm.replaceSelection(left + right, null);
        cm.triggerElectric(left + right);
        cm.execCommand("goCharLeft");
      } else if (type == "addFour") {
        cm.replaceSelection(left + left + left + left, "before");
        cm.execCommand("goCharRight");
      }
    });
  }

  function charsAround(cm, pos) {
    var str = cm.getRange(Pos(pos.line, pos.ch - 1),
                          Pos(pos.line, pos.ch + 1));
    return str.length == 2 ? str : null;
  }

  function stringStartsAfter(cm, pos) {
    var token = cm.getTokenAt(Pos(pos.line, pos.ch + 1))
    return /\bstring/.test(token.type) && token.start == pos.ch &&
      (pos.ch == 0 || !/\bstring/.test(cm.getTokenTypeAt(pos)))
  }
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/edit/trailingspace.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  CodeMirror.defineOption("showTrailingSpace", false, function(cm, val, prev) {
    if (prev == CodeMirror.Init) prev = false;
    if (prev && !val)
      cm.removeOverlay("trailingspace");
    else if (!prev && val)
      cm.addOverlay({
        token: function(stream) {
          for (var l = stream.string.length, i = l; i && /\s/.test(stream.string.charAt(i - 1)); --i) {}
          if (i > stream.pos) { stream.pos = i; return null; }
          stream.pos = l;
          return "trailingspace";
        },
        name: "trailingspace"
      });
  });
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/fold/brace-fold.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
"use strict";

CodeMirror.registerHelper("fold", "brace", function(cm, start) {
  var line = start.line, lineText = cm.getLine(line);
  var tokenType;

  function findOpening(openCh) {
    for (var at = start.ch, pass = 0;;) {
      var found = at <= 0 ? -1 : lineText.lastIndexOf(openCh, at - 1);
      if (found == -1) {
        if (pass == 1) break;
        pass = 1;
        at = lineText.length;
        continue;
      }
      if (pass == 1 && found < start.ch) break;
      tokenType = cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1));
      if (!/^(comment|string)/.test(tokenType)) return found + 1;
      at = found - 1;
    }
  }

  var startToken = "{", endToken = "}", startCh = findOpening("{");
  if (startCh == null) {
    startToken = "[", endToken = "]";
    startCh = findOpening("[");
  }

  if (startCh == null) return;
  var count = 1, lastLine = cm.lastLine(), end, endCh;
  outer: for (var i = line; i <= lastLine; ++i) {
    var text = cm.getLine(i), pos = i == line ? startCh : 0;
    for (;;) {
      var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos);
      if (nextOpen < 0) nextOpen = text.length;
      if (nextClose < 0) nextClose = text.length;
      pos = Math.min(nextOpen, nextClose);
      if (pos == text.length) break;
      if (cm.getTokenTypeAt(CodeMirror.Pos(i, pos + 1)) == tokenType) {
        if (pos == nextOpen) ++count;
        else if (!--count) { end = i; endCh = pos; break outer; }
      }
      ++pos;
    }
  }
  if (end == null || line == end) return;
  return {from: CodeMirror.Pos(line, startCh),
          to: CodeMirror.Pos(end, endCh)};
});

CodeMirror.registerHelper("fold", "import", function(cm, start) {
  function hasImport(line) {
    if (line < cm.firstLine() || line > cm.lastLine()) return null;
    var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
    if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
    if (start.type != "keyword" || start.string != "import") return null;
    // Now find closing semicolon, return its position
    for (var i = line, e = Math.min(cm.lastLine(), line + 10); i <= e; ++i) {
      var text = cm.getLine(i), semi = text.indexOf(";");
      if (semi != -1) return {startCh: start.end, end: CodeMirror.Pos(i, semi)};
    }
  }

  var startLine = start.line, has = hasImport(startLine), prev;
  if (!has || hasImport(startLine - 1) || ((prev = hasImport(startLine - 2)) && prev.end.line == startLine - 1))
    return null;
  for (var end = has.end;;) {
    var next = hasImport(end.line + 1);
    if (next == null) break;
    end = next.end;
  }
  return {from: cm.clipPos(CodeMirror.Pos(startLine, has.startCh + 1)), to: end};
});

CodeMirror.registerHelper("fold", "include", function(cm, start) {
  function hasInclude(line) {
    if (line < cm.firstLine() || line > cm.lastLine()) return null;
    var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
    if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
    if (start.type == "meta" && start.string.slice(0, 8) == "#include") return start.start + 8;
  }

  var startLine = start.line, has = hasInclude(startLine);
  if (has == null || hasInclude(startLine - 1) != null) return null;
  for (var end = startLine;;) {
    var next = hasInclude(end + 1);
    if (next == null) break;
    ++end;
  }
  return {from: CodeMirror.Pos(startLine, has + 1),
          to: cm.clipPos(CodeMirror.Pos(end))};
});

});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/fold/comment-fold.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
"use strict";

CodeMirror.registerGlobalHelper("fold", "comment", function(mode) {
  return mode.blockCommentStart && mode.blockCommentEnd;
}, function(cm, start) {
  var mode = cm.getModeAt(start), startToken = mode.blockCommentStart, endToken = mode.blockCommentEnd;
  if (!startToken || !endToken) return;
  var line = start.line, lineText = cm.getLine(line);

  var startCh;
  for (var at = start.ch, pass = 0;;) {
    var found = at <= 0 ? -1 : lineText.lastIndexOf(startToken, at - 1);
    if (found == -1) {
      if (pass == 1) return;
      pass = 1;
      at = lineText.length;
      continue;
    }
    if (pass == 1 && found < start.ch) return;
    if (/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1))) &&
        (found == 0 || lineText.slice(found - endToken.length, found) == endToken ||
         !/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found))))) {
      startCh = found + startToken.length;
      break;
    }
    at = found - 1;
  }

  var depth = 1, lastLine = cm.lastLine(), end, endCh;
  outer: for (var i = line; i <= lastLine; ++i) {
    var text = cm.getLine(i), pos = i == line ? startCh : 0;
    for (;;) {
      var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos);
      if (nextOpen < 0) nextOpen = text.length;
      if (nextClose < 0) nextClose = text.length;
      pos = Math.min(nextOpen, nextClose);
      if (pos == text.length) break;
      if (pos == nextOpen) ++depth;
      else if (!--depth) { end = i; endCh = pos; break outer; }
      ++pos;
    }
  }
  if (end == null || line == end && endCh == startCh) return;
  return {from: CodeMirror.Pos(line, startCh),
          to: CodeMirror.Pos(end, endCh)};
});

});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/fold/foldcode.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  function doFold(cm, pos, options, force) {
    if (options && options.call) {
      var finder = options;
      options = null;
    } else {
      var finder = getOption(cm, options, "rangeFinder");
    }
    if (typeof pos == "number") pos = CodeMirror.Pos(pos, 0);
    var minSize = getOption(cm, options, "minFoldSize");

    function getRange(allowFolded) {
      var range = finder(cm, pos);
      if (!range || range.to.line - range.from.line < minSize) return null;
      var marks = cm.findMarksAt(range.from);
      for (var i = 0; i < marks.length; ++i) {
        if (marks[i].__isFold && force !== "fold") {
          if (!allowFolded) return null;
          range.cleared = true;
          marks[i].clear();
        }
      }
      return range;
    }

    var range = getRange(true);
    if (getOption(cm, options, "scanUp")) while (!range && pos.line > cm.firstLine()) {
      pos = CodeMirror.Pos(pos.line - 1, 0);
      range = getRange(false);
    }
    if (!range || range.cleared || force === "unfold") return;

    var myWidget = makeWidget(cm, options);
    CodeMirror.on(myWidget, "mousedown", function(e) {
      myRange.clear();
      CodeMirror.e_preventDefault(e);
    });
    var myRange = cm.markText(range.from, range.to, {
      replacedWith: myWidget,
      clearOnEnter: getOption(cm, options, "clearOnEnter"),
      __isFold: true
    });
    myRange.on("clear", function(from, to) {
      CodeMirror.signal(cm, "unfold", cm, from, to);
    });
    CodeMirror.signal(cm, "fold", cm, range.from, range.to);
  }

  function makeWidget(cm, options) {
    var widget = getOption(cm, options, "widget");
    if (typeof widget == "string") {
      var text = document.createTextNode(widget);
      widget = document.createElement("span");
      widget.appendChild(text);
      widget.className = "CodeMirror-foldmarker";
    } else if (widget) {
      widget = widget.cloneNode(true)
    }
    return widget;
  }

  // Clumsy backwards-compatible interface
  CodeMirror.newFoldFunction = function(rangeFinder, widget) {
    return function(cm, pos) { doFold(cm, pos, {rangeFinder: rangeFinder, widget: widget}); };
  };

  // New-style interface
  CodeMirror.defineExtension("foldCode", function(pos, options, force) {
    doFold(this, pos, options, force);
  });

  CodeMirror.defineExtension("isFolded", function(pos) {
    var marks = this.findMarksAt(pos);
    for (var i = 0; i < marks.length; ++i)
      if (marks[i].__isFold) return true;
  });

  CodeMirror.commands.toggleFold = function(cm) {
    cm.foldCode(cm.getCursor());
  };
  CodeMirror.commands.fold = function(cm) {
    cm.foldCode(cm.getCursor(), null, "fold");
  };
  CodeMirror.commands.unfold = function(cm) {
    cm.foldCode(cm.getCursor(), null, "unfold");
  };
  CodeMirror.commands.foldAll = function(cm) {
    cm.operation(function() {
      for (var i = cm.firstLine(), e = cm.lastLine(); i <= e; i++)
        cm.foldCode(CodeMirror.Pos(i, 0), null, "fold");
    });
  };
  CodeMirror.commands.unfoldAll = function(cm) {
    cm.operation(function() {
      for (var i = cm.firstLine(), e = cm.lastLine(); i <= e; i++)
        cm.foldCode(CodeMirror.Pos(i, 0), null, "unfold");
    });
  };

  CodeMirror.registerHelper("fold", "combine", function() {
    var funcs = Array.prototype.slice.call(arguments, 0);
    return function(cm, start) {
      for (var i = 0; i < funcs.length; ++i) {
        var found = funcs[i](cm, start);
        if (found) return found;
      }
    };
  });

  CodeMirror.registerHelper("fold", "auto", function(cm, start) {
    var helpers = cm.getHelpers(start, "fold");
    for (var i = 0; i < helpers.length; i++) {
      var cur = helpers[i](cm, start);
      if (cur) return cur;
    }
  });

  var defaultOptions = {
    rangeFinder: CodeMirror.fold.auto,
    widget: "\u2194",
    minFoldSize: 0,
    scanUp: false,
    clearOnEnter: true
  };

  CodeMirror.defineOption("foldOptions", null);

  function getOption(cm, options, name) {
    if (options && options[name] !== undefined)
      return options[name];
    var editorOptions = cm.options.foldOptions;
    if (editorOptions && editorOptions[name] !== undefined)
      return editorOptions[name];
    return defaultOptions[name];
  }

  CodeMirror.defineExtension("foldOption", function(options, name) {
    return getOption(this, options, name);
  });
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/fold/foldgutter.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"), require("./foldcode"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror", "./foldcode"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  CodeMirror.defineOption("foldGutter", false, function(cm, val, old) {
    if (old && old != CodeMirror.Init) {
      cm.clearGutter(cm.state.foldGutter.options.gutter);
      cm.state.foldGutter = null;
      cm.off("gutterClick", onGutterClick);
      cm.off("change", onChange);
      cm.off("viewportChange", onViewportChange);
      cm.off("fold", onFold);
      cm.off("unfold", onFold);
      cm.off("swapDoc", onChange);
    }
    if (val) {
      cm.state.foldGutter = new State(parseOptions(val));
      updateInViewport(cm);
      cm.on("gutterClick", onGutterClick);
      cm.on("change", onChange);
      cm.on("viewportChange", onViewportChange);
      cm.on("fold", onFold);
      cm.on("unfold", onFold);
      cm.on("swapDoc", onChange);
    }
  });

  var Pos = CodeMirror.Pos;

  function State(options) {
    this.options = options;
    this.from = this.to = 0;
  }

  function parseOptions(opts) {
    if (opts === true) opts = {};
    if (opts.gutter == null) opts.gutter = "CodeMirror-foldgutter";
    if (opts.indicatorOpen == null) opts.indicatorOpen = "CodeMirror-foldgutter-open";
    if (opts.indicatorFolded == null) opts.indicatorFolded = "CodeMirror-foldgutter-folded";
    return opts;
  }

  function isFolded(cm, line) {
    var marks = cm.findMarks(Pos(line, 0), Pos(line + 1, 0));
    for (var i = 0; i < marks.length; ++i)
      if (marks[i].__isFold && marks[i].find().from.line == line) return marks[i];
  }

  function marker(spec) {
    if (typeof spec == "string") {
      var elt = document.createElement("div");
      elt.className = spec + " CodeMirror-guttermarker-subtle";
      return elt;
    } else {
      return spec.cloneNode(true);
    }
  }

  function updateFoldInfo(cm, from, to) {
    var opts = cm.state.foldGutter.options, cur = from;
    var minSize = cm.foldOption(opts, "minFoldSize");
    var func = cm.foldOption(opts, "rangeFinder");
    cm.eachLine(from, to, function(line) {
      var mark = null;
      if (isFolded(cm, cur)) {
        mark = marker(opts.indicatorFolded);
      } else {
        var pos = Pos(cur, 0);
        var range = func && func(cm, pos);
        if (range && range.to.line - range.from.line >= minSize)
          mark = marker(opts.indicatorOpen);
      }
      cm.setGutterMarker(line, opts.gutter, mark);
      ++cur;
    });
  }

  function updateInViewport(cm) {
    var vp = cm.getViewport(), state = cm.state.foldGutter;
    if (!state) return;
    cm.operation(function() {
      updateFoldInfo(cm, vp.from, vp.to);
    });
    state.from = vp.from; state.to = vp.to;
  }

  function onGutterClick(cm, line, gutter) {
    var state = cm.state.foldGutter;
    if (!state) return;
    var opts = state.options;
    if (gutter != opts.gutter) return;
    var folded = isFolded(cm, line);
    if (folded) folded.clear();
    else cm.foldCode(Pos(line, 0), opts.rangeFinder);
  }

  function onChange(cm) {
    var state = cm.state.foldGutter;
    if (!state) return;
    var opts = state.options;
    state.from = state.to = 0;
    clearTimeout(state.changeUpdate);
    state.changeUpdate = setTimeout(function() { updateInViewport(cm); }, opts.foldOnChangeTimeSpan || 600);
  }

  function onViewportChange(cm) {
    var state = cm.state.foldGutter;
    if (!state) return;
    var opts = state.options;
    clearTimeout(state.changeUpdate);
    state.changeUpdate = setTimeout(function() {
      var vp = cm.getViewport();
      if (state.from == state.to || vp.from - state.to > 20 || state.from - vp.to > 20) {
        updateInViewport(cm);
      } else {
        cm.operation(function() {
          if (vp.from < state.from) {
            updateFoldInfo(cm, vp.from, state.from);
            state.from = vp.from;
          }
          if (vp.to > state.to) {
            updateFoldInfo(cm, state.to, vp.to);
            state.to = vp.to;
          }
        });
      }
    }, opts.updateViewportTimeSpan || 400);
  }

  function onFold(cm, from) {
    var state = cm.state.foldGutter;
    if (!state) return;
    var line = from.line;
    if (line >= state.from && line < state.to)
      updateFoldInfo(cm, line, line + 1);
  }
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/fold/indent-fold.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
"use strict";

function lineIndent(cm, lineNo) {
  var text = cm.getLine(lineNo)
  var spaceTo = text.search(/\S/)
  if (spaceTo == -1 || /\bcomment\b/.test(cm.getTokenTypeAt(CodeMirror.Pos(lineNo, spaceTo + 1))))
    return -1
  return CodeMirror.countColumn(text, null, cm.getOption("tabSize"))
}

CodeMirror.registerHelper("fold", "indent", function(cm, start) {
  var myIndent = lineIndent(cm, start.line)
  if (myIndent < 0) return
  var lastLineInFold = null

  // Go through lines until we find a line that definitely doesn't belong in
  // the block we're folding, or to the end.
  for (var i = start.line + 1, end = cm.lastLine(); i <= end; ++i) {
    var indent = lineIndent(cm, i)
    if (indent == -1) {
    } else if (indent > myIndent) {
      // Lines with a greater indent are considered part of the block.
      lastLineInFold = i;
    } else {
      // If this line has non-space, non-comment content, and is
      // indented less or equal to the start line, it is the start of
      // another block.
      break;
    }
  }
  if (lastLineInFold) return {
    from: CodeMirror.Pos(start.line, cm.getLine(start.line).length),
    to: CodeMirror.Pos(lastLineInFold, cm.getLine(lastLineInFold).length)
  };
});

});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/hint/javascript-hint.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  var Pos = CodeMirror.Pos;

  function forEach(arr, f) {
    for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]);
  }

  function arrayContains(arr, item) {
    if (!Array.prototype.indexOf) {
      var i = arr.length;
      while (i--) {
        if (arr[i] === item) {
          return true;
        }
      }
      return false;
    }
    return arr.indexOf(item) != -1;
  }

  function scriptHint(editor, keywords, getToken, options) {
    // Find the token at the cursor
    var cur = editor.getCursor(), token = getToken(editor, cur);
    if (/\b(?:string|comment)\b/.test(token.type)) return;
    var innerMode = CodeMirror.innerMode(editor.getMode(), token.state);
    if (innerMode.mode.helperType === "json") return;
    token.state = innerMode.state;

    // If it's not a 'word-style' token, ignore the token.
    if (!/^[\w$_]*$/.test(token.string)) {
      token = {start: cur.ch, end: cur.ch, string: "", state: token.state,
               type: token.string == "." ? "property" : null};
    } else if (token.end > cur.ch) {
      token.end = cur.ch;
      token.string = token.string.slice(0, cur.ch - token.start);
    }

    var tprop = token;
    // If it is a property, find out what it is a property of.
    while (tprop.type == "property") {
      tprop = getToken(editor, Pos(cur.line, tprop.start));
      if (tprop.string != ".") return;
      tprop = getToken(editor, Pos(cur.line, tprop.start));
      if (!context) var context = [];
      context.push(tprop);
    }
    return {list: getCompletions(token, context, keywords, options),
            from: Pos(cur.line, token.start),
            to: Pos(cur.line, token.end)};
  }

  function javascriptHint(editor, options) {
    return scriptHint(editor, javascriptKeywords,
                      function (e, cur) {return e.getTokenAt(cur);},
                      options);
  };
  CodeMirror.registerHelper("hint", "javascript", javascriptHint);

  function getCoffeeScriptToken(editor, cur) {
  // This getToken, it is for coffeescript, imitates the behavior of
  // getTokenAt method in javascript.js, that is, returning "property"
  // type and treat "." as indepenent token.
    var token = editor.getTokenAt(cur);
    if (cur.ch == token.start + 1 && token.string.charAt(0) == '.') {
      token.end = token.start;
      token.string = '.';
      token.type = "property";
    }
    else if (/^\.[\w$_]*$/.test(token.string)) {
      token.type = "property";
      token.start++;
      token.string = token.string.replace(/\./, '');
    }
    return token;
  }

  function coffeescriptHint(editor, options) {
    return scriptHint(editor, coffeescriptKeywords, getCoffeeScriptToken, options);
  }
  CodeMirror.registerHelper("hint", "coffeescript", coffeescriptHint);

  var stringProps = ("charAt charCodeAt indexOf lastIndexOf substring substr slice trim trimLeft trimRight " +
                     "toUpperCase toLowerCase split concat match replace search").split(" ");
  var arrayProps = ("length concat join splice push pop shift unshift slice reverse sort indexOf " +
                    "lastIndexOf every some filter forEach map reduce reduceRight ").split(" ");
  var funcProps = "prototype apply call bind".split(" ");
  var javascriptKeywords = ("break case catch class const continue debugger default delete do else export extends false finally for function " +
                  "if in import instanceof new null return super switch this throw true try typeof var void while with yield").split(" ");
  var coffeescriptKeywords = ("and break catch class continue delete do else extends false finally for " +
                  "if in instanceof isnt new no not null of off on or return switch then throw true try typeof until void while with yes").split(" ");

  function forAllProps(obj, callback) {
    if (!Object.getOwnPropertyNames || !Object.getPrototypeOf) {
      for (var name in obj) callback(name)
    } else {
      for (var o = obj; o; o = Object.getPrototypeOf(o))
        Object.getOwnPropertyNames(o).forEach(callback)
    }
  }

  function getCompletions(token, context, keywords, options) {
    var found = [], start = token.string, global = options && options.globalScope || window;
    function maybeAdd(str) {
      if (str.lastIndexOf(start, 0) == 0 && !arrayContains(found, str)) found.push(str);
    }
    function gatherCompletions(obj) {
      if (typeof obj == "string") forEach(stringProps, maybeAdd);
      else if (obj instanceof Array) forEach(arrayProps, maybeAdd);
      else if (obj instanceof Function) forEach(funcProps, maybeAdd);
      forAllProps(obj, maybeAdd)
    }

    if (context && context.length) {
      // If this is a property, see if it belongs to some object we can
      // find in the current environment.
      var obj = context.pop(), base;
      if (obj.type && obj.type.indexOf("variable") === 0) {
        if (options && options.additionalContext)
          base = options.additionalContext[obj.string];
        if (!options || options.useGlobalScope !== false)
          base = base || global[obj.string];
      } else if (obj.type == "string") {
        base = "";
      } else if (obj.type == "atom") {
        base = 1;
      } else if (obj.type == "function") {
        if (global.jQuery != null && (obj.string == '$' || obj.string == 'jQuery') &&
            (typeof global.jQuery == 'function'))
          base = global.jQuery();
        else if (global._ != null && (obj.string == '_') && (typeof global._ == 'function'))
          base = global._();
      }
      while (base != null && context.length)
        base = base[context.pop().string];
      if (base != null) gatherCompletions(base);
    } else {
      // If not, just look in the global object and any local scope
      // (reading into JS mode internals to get at the local and global variables)
      for (var v = token.state.localVars; v; v = v.next) maybeAdd(v.name);
      for (var v = token.state.globalVars; v; v = v.next) maybeAdd(v.name);
      if (!options || options.useGlobalScope !== false)
        gatherCompletions(global);
      forEach(keywords, maybeAdd);
    }
    return found;
  }
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/hint/show-hint.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  var HINT_ELEMENT_CLASS        = "CodeMirror-hint";
  var ACTIVE_HINT_ELEMENT_CLASS = "CodeMirror-hint-active";

  // This is the old interface, kept around for now to stay
  // backwards-compatible.
  CodeMirror.showHint = function(cm, getHints, options) {
    if (!getHints) return cm.showHint(options);
    if (options && options.async) getHints.async = true;
    var newOpts = {hint: getHints};
    if (options) for (var prop in options) newOpts[prop] = options[prop];
    return cm.showHint(newOpts);
  };

  CodeMirror.defineExtension("showHint", function(options) {
    options = parseOptions(this, this.getCursor("start"), options);
    var selections = this.listSelections()
    if (selections.length > 1) return;
    // By default, don't allow completion when something is selected.
    // A hint function can have a `supportsSelection` property to
    // indicate that it can handle selections.
    if (this.somethingSelected()) {
      if (!options.hint.supportsSelection) return;
      // Don't try with cross-line selections
      for (var i = 0; i < selections.length; i++)
        if (selections[i].head.line != selections[i].anchor.line) return;
    }

    if (this.state.completionActive) this.state.completionActive.close();
    var completion = this.state.completionActive = new Completion(this, options);
    if (!completion.options.hint) return;

    CodeMirror.signal(this, "startCompletion", this);
    completion.update(true);
  });

  CodeMirror.defineExtension("closeHint", function() {
    if (this.state.completionActive) this.state.completionActive.close()
  })

  function Completion(cm, options) {
    this.cm = cm;
    this.options = options;
    this.widget = null;
    this.debounce = 0;
    this.tick = 0;
    this.startPos = this.cm.getCursor("start");
    this.startLen = this.cm.getLine(this.startPos.line).length - this.cm.getSelection().length;

    var self = this;
    cm.on("cursorActivity", this.activityFunc = function() { self.cursorActivity(); });
  }

  var requestAnimationFrame = window.requestAnimationFrame || function(fn) {
    return setTimeout(fn, 1000/60);
  };
  var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout;

  Completion.prototype = {
    close: function() {
      if (!this.active()) return;
      this.cm.state.completionActive = null;
      this.tick = null;
      this.cm.off("cursorActivity", this.activityFunc);

      if (this.widget && this.data) CodeMirror.signal(this.data, "close");
      if (this.widget) this.widget.close();
      CodeMirror.signal(this.cm, "endCompletion", this.cm);
    },

    active: function() {
      return this.cm.state.completionActive == this;
    },

    pick: function(data, i) {
      var completion = data.list[i];
      if (completion.hint) completion.hint(this.cm, data, completion);
      else this.cm.replaceRange(getText(completion), completion.from || data.from,
                                completion.to || data.to, "complete");
      CodeMirror.signal(data, "pick", completion);
      this.close();
    },

    cursorActivity: function() {
      if (this.debounce) {
        cancelAnimationFrame(this.debounce);
        this.debounce = 0;
      }

      var pos = this.cm.getCursor(), line = this.cm.getLine(pos.line);
      if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch ||
          pos.ch < this.startPos.ch || this.cm.somethingSelected() ||
          (!pos.ch || this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) {
        this.close();
      } else {
        var self = this;
        this.debounce = requestAnimationFrame(function() {self.update();});
        if (this.widget) this.widget.disable();
      }
    },

    update: function(first) {
      if (this.tick == null) return
      var self = this, myTick = ++this.tick
      fetchHints(this.options.hint, this.cm, this.options, function(data) {
        if (self.tick == myTick) self.finishUpdate(data, first)
      })
    },

    finishUpdate: function(data, first) {
      if (this.data) CodeMirror.signal(this.data, "update");

      var picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle);
      if (this.widget) this.widget.close();

      this.data = data;

      if (data && data.list.length) {
        if (picked && data.list.length == 1) {
          this.pick(data, 0);
        } else {
          this.widget = new Widget(this, data);
          CodeMirror.signal(data, "shown");
        }
      }
    }
  };

  function parseOptions(cm, pos, options) {
    var editor = cm.options.hintOptions;
    var out = {};
    for (var prop in defaultOptions) out[prop] = defaultOptions[prop];
    if (editor) for (var prop in editor)
      if (editor[prop] !== undefined) out[prop] = editor[prop];
    if (options) for (var prop in options)
      if (options[prop] !== undefined) out[prop] = options[prop];
    if (out.hint.resolve) out.hint = out.hint.resolve(cm, pos)
    return out;
  }

  function getText(completion) {
    if (typeof completion == "string") return completion;
    else return completion.text;
  }

  function buildKeyMap(completion, handle) {
    var baseMap = {
      Up: function() {handle.moveFocus(-1);},
      Down: function() {handle.moveFocus(1);},
      PageUp: function() {handle.moveFocus(-handle.menuSize() + 1, true);},
      PageDown: function() {handle.moveFocus(handle.menuSize() - 1, true);},
      Home: function() {handle.setFocus(0);},
      End: function() {handle.setFocus(handle.length - 1);},
      Enter: handle.pick,
      Tab: handle.pick,
      Esc: handle.close
    };

    var mac = /Mac/.test(navigator.platform);

    if (mac) {
      baseMap["Ctrl-P"] = function() {handle.moveFocus(-1);};
      baseMap["Ctrl-N"] = function() {handle.moveFocus(1);};
    }

    var custom = completion.options.customKeys;
    var ourMap = custom ? {} : baseMap;
    function addBinding(key, val) {
      var bound;
      if (typeof val != "string")
        bound = function(cm) { return val(cm, handle); };
      // This mechanism is deprecated
      else if (baseMap.hasOwnProperty(val))
        bound = baseMap[val];
      else
        bound = val;
      ourMap[key] = bound;
    }
    if (custom)
      for (var key in custom) if (custom.hasOwnProperty(key))
        addBinding(key, custom[key]);
    var extra = completion.options.extraKeys;
    if (extra)
      for (var key in extra) if (extra.hasOwnProperty(key))
        addBinding(key, extra[key]);
    return ourMap;
  }

  function getHintElement(hintsElement, el) {
    while (el && el != hintsElement) {
      if (el.nodeName.toUpperCase() === "LI" && el.parentNode == hintsElement) return el;
      el = el.parentNode;
    }
  }

  function Widget(completion, data) {
    this.completion = completion;
    this.data = data;
    this.picked = false;
    var widget = this, cm = completion.cm;
    var ownerDocument = cm.getInputField().ownerDocument;
    var parentWindow = ownerDocument.defaultView || ownerDocument.parentWindow;

    var hints = this.hints = ownerDocument.createElement("ul");
    var theme = completion.cm.options.theme;
    hints.className = "CodeMirror-hints " + theme;
    this.selectedHint = data.selectedHint || 0;

    var completions = data.list;
    for (var i = 0; i < completions.length; ++i) {
      var elt = hints.appendChild(ownerDocument.createElement("li")), cur = completions[i];
      var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? "" : " " + ACTIVE_HINT_ELEMENT_CLASS);
      if (cur.className != null) className = cur.className + " " + className;
      elt.className = className;
      if (cur.render) cur.render(elt, data, cur);
      else elt.appendChild(ownerDocument.createTextNode(cur.displayText || getText(cur)));
      elt.hintId = i;
    }

    var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null);
    var left = pos.left, top = pos.bottom, below = true;
    hints.style.left = left + "px";
    hints.style.top = top + "px";
    // If we're at the edge of the screen, then we want the menu to appear on the left of the cursor.
    var winW = parentWindow.innerWidth || Math.max(ownerDocument.body.offsetWidth, ownerDocument.documentElement.offsetWidth);
    var winH = parentWindow.innerHeight || Math.max(ownerDocument.body.offsetHeight, ownerDocument.documentElement.offsetHeight);
    (completion.options.container || ownerDocument.body).appendChild(hints);
    var box = hints.getBoundingClientRect(), overlapY = box.bottom - winH;
    var scrolls = hints.scrollHeight > hints.clientHeight + 1
    var startScroll = cm.getScrollInfo();

    if (overlapY > 0) {
      var height = box.bottom - box.top, curTop = pos.top - (pos.bottom - box.top);
      if (curTop - height > 0) { // Fits above cursor
        hints.style.top = (top = pos.top - height) + "px";
        below = false;
      } else if (height > winH) {
        hints.style.height = (winH - 5) + "px";
        hints.style.top = (top = pos.bottom - box.top) + "px";
        var cursor = cm.getCursor();
        if (data.from.ch != cursor.ch) {
          pos = cm.cursorCoords(cursor);
          hints.style.left = (left = pos.left) + "px";
          box = hints.getBoundingClientRect();
        }
      }
    }
    var overlapX = box.right - winW;
    if (overlapX > 0) {
      if (box.right - box.left > winW) {
        hints.style.width = (winW - 5) + "px";
        overlapX -= (box.right - box.left) - winW;
      }
      hints.style.left = (left = pos.left - overlapX) + "px";
    }
    if (scrolls) for (var node = hints.firstChild; node; node = node.nextSibling)
      node.style.paddingRight = cm.display.nativeBarWidth + "px"

    cm.addKeyMap(this.keyMap = buildKeyMap(completion, {
      moveFocus: function(n, avoidWrap) { widget.changeActive(widget.selectedHint + n, avoidWrap); },
      setFocus: function(n) { widget.changeActive(n); },
      menuSize: function() { return widget.screenAmount(); },
      length: completions.length,
      close: function() { completion.close(); },
      pick: function() { widget.pick(); },
      data: data
    }));

    if (completion.options.closeOnUnfocus) {
      var closingOnBlur;
      cm.on("blur", this.onBlur = function() { closingOnBlur = setTimeout(function() { completion.close(); }, 100); });
      cm.on("focus", this.onFocus = function() { clearTimeout(closingOnBlur); });
    }

    cm.on("scroll", this.onScroll = function() {
      var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect();
      var newTop = top + startScroll.top - curScroll.top;
      var point = newTop - (parentWindow.pageYOffset || (ownerDocument.documentElement || ownerDocument.body).scrollTop);
      if (!below) point += hints.offsetHeight;
      if (point <= editor.top || point >= editor.bottom) return completion.close();
      hints.style.top = newTop + "px";
      hints.style.left = (left + startScroll.left - curScroll.left) + "px";
    });

    CodeMirror.on(hints, "dblclick", function(e) {
      var t = getHintElement(hints, e.target || e.srcElement);
      if (t && t.hintId != null) {widget.changeActive(t.hintId); widget.pick();}
    });

    CodeMirror.on(hints, "click", function(e) {
      var t = getHintElement(hints, e.target || e.srcElement);
      if (t && t.hintId != null) {
        widget.changeActive(t.hintId);
        if (completion.options.completeOnSingleClick) widget.pick();
      }
    });

    CodeMirror.on(hints, "mousedown", function() {
      setTimeout(function(){cm.focus();}, 20);
    });

    CodeMirror.signal(data, "select", completions[this.selectedHint], hints.childNodes[this.selectedHint]);
    return true;
  }

  Widget.prototype = {
    close: function() {
      if (this.completion.widget != this) return;
      this.completion.widget = null;
      this.hints.parentNode.removeChild(this.hints);
      this.completion.cm.removeKeyMap(this.keyMap);

      var cm = this.completion.cm;
      if (this.completion.options.closeOnUnfocus) {
        cm.off("blur", this.onBlur);
        cm.off("focus", this.onFocus);
      }
      cm.off("scroll", this.onScroll);
    },

    disable: function() {
      this.completion.cm.removeKeyMap(this.keyMap);
      var widget = this;
      this.keyMap = {Enter: function() { widget.picked = true; }};
      this.completion.cm.addKeyMap(this.keyMap);
    },

    pick: function() {
      this.completion.pick(this.data, this.selectedHint);
    },

    changeActive: function(i, avoidWrap) {
      if (i >= this.data.list.length)
        i = avoidWrap ? this.data.list.length - 1 : 0;
      else if (i < 0)
        i = avoidWrap ? 0  : this.data.list.length - 1;
      if (this.selectedHint == i) return;
      var node = this.hints.childNodes[this.selectedHint];
      if (node) node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, "");
      node = this.hints.childNodes[this.selectedHint = i];
      node.className += " " + ACTIVE_HINT_ELEMENT_CLASS;
      if (node.offsetTop < this.hints.scrollTop)
        this.hints.scrollTop = node.offsetTop - 3;
      else if (node.offsetTop + node.offsetHeight > this.hints.scrollTop + this.hints.clientHeight)
        this.hints.scrollTop = node.offsetTop + node.offsetHeight - this.hints.clientHeight + 3;
      CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node);
    },

    screenAmount: function() {
      return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1;
    }
  };

  function applicableHelpers(cm, helpers) {
    if (!cm.somethingSelected()) return helpers
    var result = []
    for (var i = 0; i < helpers.length; i++)
      if (helpers[i].supportsSelection) result.push(helpers[i])
    return result
  }

  function fetchHints(hint, cm, options, callback) {
    if (hint.async) {
      hint(cm, callback, options)
    } else {
      var result = hint(cm, options)
      if (result && result.then) result.then(callback)
      else callback(result)
    }
  }

  function resolveAutoHints(cm, pos) {
    var helpers = cm.getHelpers(pos, "hint"), words
    if (helpers.length) {
      var resolved = function(cm, callback, options) {
        var app = applicableHelpers(cm, helpers);
        function run(i) {
          if (i == app.length) return callback(null)
          fetchHints(app[i], cm, options, function(result) {
            if (result && result.list.length > 0) callback(result)
            else run(i + 1)
          })
        }
        run(0)
      }
      resolved.async = true
      resolved.supportsSelection = true
      return resolved
    } else if (words = cm.getHelper(cm.getCursor(), "hintWords")) {
      return function(cm) { return CodeMirror.hint.fromList(cm, {words: words}) }
    } else if (CodeMirror.hint.anyword) {
      return function(cm, options) { return CodeMirror.hint.anyword(cm, options) }
    } else {
      return function() {}
    }
  }

  CodeMirror.registerHelper("hint", "auto", {
    resolve: resolveAutoHints
  });

  CodeMirror.registerHelper("hint", "fromList", function(cm, options) {
    var cur = cm.getCursor(), token = cm.getTokenAt(cur)
    var term, from = CodeMirror.Pos(cur.line, token.start), to = cur
    if (token.start < cur.ch && /\w/.test(token.string.charAt(cur.ch - token.start - 1))) {
      term = token.string.substr(0, cur.ch - token.start)
    } else {
      term = ""
      from = cur
    }
    var found = [];
    for (var i = 0; i < options.words.length; i++) {
      var word = options.words[i];
      if (word.slice(0, term.length) == term)
        found.push(word);
    }

    if (found.length) return {list: found, from: from, to: to};
  });

  CodeMirror.commands.autocomplete = CodeMirror.showHint;

  var defaultOptions = {
    hint: CodeMirror.hint.auto,
    completeSingle: true,
    alignWithWord: true,
    closeCharacters: /[\s()\[\]{};:>,]/,
    closeOnUnfocus: true,
    completeOnSingleClick: true,
    container: null,
    customKeys: null,
    extraKeys: null
  };

  CodeMirror.defineOption("hintOptions", null);
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/lint/lint.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";
  var GUTTER_ID = "CodeMirror-lint-markers";

  function showTooltip(e, content) {
    var tt = document.createElement("div");
    tt.className = "CodeMirror-lint-tooltip";
    tt.appendChild(content.cloneNode(true));
    document.body.appendChild(tt);

    function position(e) {
      if (!tt.parentNode) return CodeMirror.off(document, "mousemove", position);
      tt.style.top = Math.max(0, e.clientY - tt.offsetHeight - 5) + "px";
      tt.style.left = (e.clientX + 5) + "px";
    }
    CodeMirror.on(document, "mousemove", position);
    position(e);
    if (tt.style.opacity != null) tt.style.opacity = 1;
    return tt;
  }
  function rm(elt) {
    if (elt.parentNode) elt.parentNode.removeChild(elt);
  }
  function hideTooltip(tt) {
    if (!tt.parentNode) return;
    if (tt.style.opacity == null) rm(tt);
    tt.style.opacity = 0;
    setTimeout(function() { rm(tt); }, 600);
  }

  function showTooltipFor(e, content, node) {
    var tooltip = showTooltip(e, content);
    function hide() {
      CodeMirror.off(node, "mouseout", hide);
      if (tooltip) { hideTooltip(tooltip); tooltip = null; }
    }
    var poll = setInterval(function() {
      if (tooltip) for (var n = node;; n = n.parentNode) {
        if (n && n.nodeType == 11) n = n.host;
        if (n == document.body) return;
        if (!n) { hide(); break; }
      }
      if (!tooltip) return clearInterval(poll);
    }, 400);
    CodeMirror.on(node, "mouseout", hide);
  }

  function LintState(cm, options, hasGutter) {
    this.marked = [];
    this.options = options;
    this.timeout = null;
    this.hasGutter = hasGutter;
    this.onMouseOver = function(e) { onMouseOver(cm, e); };
    this.waitingFor = 0
  }

  function parseOptions(_cm, options) {
    if (options instanceof Function) return {getAnnotations: options};
    if (!options || options === true) options = {};
    return options;
  }

  function clearMarks(cm) {
    var state = cm.state.lint;
    if (state.hasGutter) cm.clearGutter(GUTTER_ID);
    for (var i = 0; i < state.marked.length; ++i)
      state.marked[i].clear();
    state.marked.length = 0;
  }

  function makeMarker(labels, severity, multiple, tooltips) {
    var marker = document.createElement("div"), inner = marker;
    marker.className = "CodeMirror-lint-marker-" + severity;
    if (multiple) {
      inner = marker.appendChild(document.createElement("div"));
      inner.className = "CodeMirror-lint-marker-multiple";
    }

    if (tooltips != false) CodeMirror.on(inner, "mouseover", function(e) {
      showTooltipFor(e, labels, inner);
    });

    return marker;
  }

  function getMaxSeverity(a, b) {
    if (a == "error") return a;
    else return b;
  }

  function groupByLine(annotations) {
    var lines = [];
    for (var i = 0; i < annotations.length; ++i) {
      var ann = annotations[i], line = ann.from.line;
      (lines[line] || (lines[line] = [])).push(ann);
    }
    return lines;
  }

  function annotationTooltip(ann) {
    var severity = ann.severity;
    if (!severity) severity = "error";
    var tip = document.createElement("div");
    tip.className = "CodeMirror-lint-message-" + severity;
    if (typeof ann.messageHTML != 'undefined') {
        tip.innerHTML = ann.messageHTML;
    } else {
        tip.appendChild(document.createTextNode(ann.message));
    }
    return tip;
  }

  function lintAsync(cm, getAnnotations, passOptions) {
    var state = cm.state.lint
    var id = ++state.waitingFor
    function abort() {
      id = -1
      cm.off("change", abort)
    }
    cm.on("change", abort)
    getAnnotations(cm.getValue(), function(annotations, arg2) {
      cm.off("change", abort)
      if (state.waitingFor != id) return
      if (arg2 && annotations instanceof CodeMirror) annotations = arg2
      cm.operation(function() {updateLinting(cm, annotations)})
    }, passOptions, cm);
  }

  function startLinting(cm) {
    var state = cm.state.lint, options = state.options;
    /*
     * Passing rules in `options` property prevents JSHint (and other linters) from complaining
     * about unrecognized rules like `onUpdateLinting`, `delay`, `lintOnChange`, etc.
     */
    var passOptions = options.options || options;
    var getAnnotations = options.getAnnotations || cm.getHelper(CodeMirror.Pos(0, 0), "lint");
    if (!getAnnotations) return;
    if (options.async || getAnnotations.async) {
      lintAsync(cm, getAnnotations, passOptions)
    } else {
      var annotations = getAnnotations(cm.getValue(), passOptions, cm);
      if (!annotations) return;
      if (annotations.then) annotations.then(function(issues) {
        cm.operation(function() {updateLinting(cm, issues)})
      });
      else cm.operation(function() {updateLinting(cm, annotations)})
    }
  }

  function updateLinting(cm, annotationsNotSorted) {
    clearMarks(cm);
    var state = cm.state.lint, options = state.options;

    var annotations = groupByLine(annotationsNotSorted);

    for (var line = 0; line < annotations.length; ++line) {
      var anns = annotations[line];
      if (!anns) continue;

      var maxSeverity = null;
      var tipLabel = state.hasGutter && document.createDocumentFragment();

      for (var i = 0; i < anns.length; ++i) {
        var ann = anns[i];
        var severity = ann.severity;
        if (!severity) severity = "error";
        maxSeverity = getMaxSeverity(maxSeverity, severity);

        if (options.formatAnnotation) ann = options.formatAnnotation(ann);
        if (state.hasGutter) tipLabel.appendChild(annotationTooltip(ann));

        if (ann.to) state.marked.push(cm.markText(ann.from, ann.to, {
          className: "CodeMirror-lint-mark-" + severity,
          __annotation: ann
        }));
      }

      if (state.hasGutter)
        cm.setGutterMarker(line, GUTTER_ID, makeMarker(tipLabel, maxSeverity, anns.length > 1,
                                                       state.options.tooltips));
    }
    if (options.onUpdateLinting) options.onUpdateLinting(annotationsNotSorted, annotations, cm);
  }

  function onChange(cm) {
    var state = cm.state.lint;
    if (!state) return;
    clearTimeout(state.timeout);
    state.timeout = setTimeout(function(){startLinting(cm);}, state.options.delay || 500);
  }

  function popupTooltips(annotations, e) {
    var target = e.target || e.srcElement;
    var tooltip = document.createDocumentFragment();
    for (var i = 0; i < annotations.length; i++) {
      var ann = annotations[i];
      tooltip.appendChild(annotationTooltip(ann));
    }
    showTooltipFor(e, tooltip, target);
  }

  function onMouseOver(cm, e) {
    var target = e.target || e.srcElement;
    if (!/\bCodeMirror-lint-mark-/.test(target.className)) return;
    var box = target.getBoundingClientRect(), x = (box.left + box.right) / 2, y = (box.top + box.bottom) / 2;
    var spans = cm.findMarksAt(cm.coordsChar({left: x, top: y}, "client"));

    var annotations = [];
    for (var i = 0; i < spans.length; ++i) {
      var ann = spans[i].__annotation;
      if (ann) annotations.push(ann);
    }
    if (annotations.length) popupTooltips(annotations, e);
  }

  CodeMirror.defineOption("lint", false, function(cm, val, old) {
    if (old && old != CodeMirror.Init) {
      clearMarks(cm);
      if (cm.state.lint.options.lintOnChange !== false)
        cm.off("change", onChange);
      CodeMirror.off(cm.getWrapperElement(), "mouseover", cm.state.lint.onMouseOver);
      clearTimeout(cm.state.lint.timeout);
      delete cm.state.lint;
    }

    if (val) {
      var gutters = cm.getOption("gutters"), hasLintGutter = false;
      for (var i = 0; i < gutters.length; ++i) if (gutters[i] == GUTTER_ID) hasLintGutter = true;
      var state = cm.state.lint = new LintState(cm, parseOptions(cm, val), hasLintGutter);
      if (state.options.lintOnChange !== false)
        cm.on("change", onChange);
      if (state.options.tooltips != false && state.options.tooltips != "gutter")
        CodeMirror.on(cm.getWrapperElement(), "mouseover", state.onMouseOver);

      startLinting(cm);
    }
  });

  CodeMirror.defineExtension("performLint", function() {
    if (this.state.lint) startLinting(this);
  });
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/lint/javascript-lint.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";
  // declare global: JSHINT

  function validator(text, options) {
    if (!window.JSHINT) {
      if (window.console) {
        window.console.error("Error: window.JSHINT not defined, CodeMirror JavaScript linting cannot run.");
      }
      return [];
    }
    if (!options.indent) // JSHint error.character actually is a column index, this fixes underlining on lines using tabs for indentation
      options.indent = 1; // JSHint default value is 4
    JSHINT(text, options, options.globals);
    var errors = JSHINT.data().errors, result = [];
    if (errors) parseErrors(errors, result);
    return result;
  }

  CodeMirror.registerHelper("lint", "javascript", validator);

  function parseErrors(errors, output) {
    for ( var i = 0; i < errors.length; i++) {
      var error = errors[i];
      if (error) {
        if (error.a == 'nullish coalescing') continue; // ignore these warnings - we don't want to enable all ES11 just to disable this
        if (error.code == "E054") continue; // Class properties must be methods (no way to ignore otherwise?) #298
        
        if (error.line <= 0) {
          if (window.console) {
            window.console.warn("Cannot display JSHint error (invalid line " + error.line + ")", error);
          }
          continue;
        }

        var start = error.character - 1, end = start + 1;
        if (error.evidence) {
          var index = error.evidence.substring(start).search(/.\b/);
          if (index > -1) {
            end += index;
          }
        }

        // Convert to format expected by validation service
        var hint = {
          message: error.reason,
          severity: error.code ? (error.code.startsWith('W') ? "warning" : "error") : "error",
          from: CodeMirror.Pos(error.line - 1, start),
          to: CodeMirror.Pos(error.line - 1, end)
        };

        output.push(hint);
      }
    }
  }
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/scroll/annotatescrollbar.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  CodeMirror.defineExtension("annotateScrollbar", function(options) {
    if (typeof options == "string") options = {className: options};
    return new Annotation(this, options);
  });

  CodeMirror.defineOption("scrollButtonHeight", 0);

  function Annotation(cm, options) {
    this.cm = cm;
    this.options = options;
    this.buttonHeight = options.scrollButtonHeight || cm.getOption("scrollButtonHeight");
    this.annotations = [];
    this.doRedraw = this.doUpdate = null;
    this.div = cm.getWrapperElement().appendChild(document.createElement("div"));
    this.div.style.cssText = "position: absolute; right: 0; top: 0; z-index: 7; pointer-events: none";
    this.computeScale();

    function scheduleRedraw(delay) {
      clearTimeout(self.doRedraw);
      self.doRedraw = setTimeout(function() { self.redraw(); }, delay);
    }

    var self = this;
    cm.on("refresh", this.resizeHandler = function() {
      clearTimeout(self.doUpdate);
      self.doUpdate = setTimeout(function() {
        if (self.computeScale()) scheduleRedraw(20);
      }, 100);
    });
    cm.on("markerAdded", this.resizeHandler);
    cm.on("markerCleared", this.resizeHandler);
    if (options.listenForChanges !== false)
      cm.on("change", this.changeHandler = function() {
        scheduleRedraw(250);
      });
  }

  Annotation.prototype.computeScale = function() {
    var cm = this.cm;
    var hScale = (cm.getWrapperElement().clientHeight - cm.display.barHeight - this.buttonHeight * 2) /
      cm.getScrollerElement().scrollHeight
    if (hScale != this.hScale) {
      this.hScale = hScale;
      return true;
    }
  };

  Annotation.prototype.update = function(annotations) {
    this.annotations = annotations;
    this.redraw();
  };

  Annotation.prototype.redraw = function(compute) {
    if (compute !== false) this.computeScale();
    var cm = this.cm, hScale = this.hScale;

    var frag = document.createDocumentFragment(), anns = this.annotations;

    var wrapping = cm.getOption("lineWrapping");
    var singleLineH = wrapping && cm.defaultTextHeight() * 1.5;
    var curLine = null, curLineObj = null;
    function getY(pos, top) {
      if (curLine != pos.line) {
        curLine = pos.line;
        curLineObj = cm.getLineHandle(curLine);
      }
      if ((curLineObj.widgets && curLineObj.widgets.length) ||
          (wrapping && curLineObj.height > singleLineH))
        return cm.charCoords(pos, "local")[top ? "top" : "bottom"];
      var topY = cm.heightAtLine(curLineObj, "local");
      return topY + (top ? 0 : curLineObj.height);
    }

    var lastLine = cm.lastLine()
    if (cm.display.barWidth) for (var i = 0, nextTop; i < anns.length; i++) {
      var ann = anns[i];
      if (ann.to.line > lastLine) continue;
      var top = nextTop || getY(ann.from, true) * hScale;
      var bottom = getY(ann.to, false) * hScale;
      while (i < anns.length - 1) {
        if (anns[i + 1].to.line > lastLine) break;
        nextTop = getY(anns[i + 1].from, true) * hScale;
        if (nextTop > bottom + .9) break;
        ann = anns[++i];
        bottom = getY(ann.to, false) * hScale;
      }
      if (bottom == top) continue;
      var height = Math.max(bottom - top, 3);

      var elt = frag.appendChild(document.createElement("div"));
      elt.style.cssText = "position: absolute; right: 0px; width: " + Math.max(cm.display.barWidth - 1, 2) + "px; top: "
        + (top + this.buttonHeight) + "px; height: " + height + "px";
      elt.className = this.options.className;
      if (ann.id) {
        elt.setAttribute("annotation-id", ann.id);
      }
    }
    this.div.textContent = "";
    this.div.appendChild(frag);
  };

  Annotation.prototype.clear = function() {
    this.cm.off("refresh", this.resizeHandler);
    this.cm.off("markerAdded", this.resizeHandler);
    this.cm.off("markerCleared", this.resizeHandler);
    if (this.changeHandler) this.cm.off("change", this.changeHandler);
    this.div.parentNode.removeChild(this.div);
  };
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/search/jump-to-line.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// Defines jumpToLine command. Uses dialog.js if present.

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"), require("../dialog/dialog"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror", "../dialog/dialog"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  function dialog(cm, text, shortText, deflt, f) {
    if (cm.openDialog) cm.openDialog(text, f, {value: deflt, selectValueOnOpen: true});
    else f(prompt(shortText, deflt));
  }

  function getJumpDialog(cm) {
    return cm.phrase("Jump to line:") + ' <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">' + cm.phrase("(Use line:column or scroll% syntax)") + '</span>';
  }

  function interpretLine(cm, string) {
    var num = Number(string)
    if (/^[-+]/.test(string)) return cm.getCursor().line + num
    else return num - 1
  }

  CodeMirror.commands.jumpToLine = function(cm) {
    var cur = cm.getCursor();
    dialog(cm, getJumpDialog(cm), cm.phrase("Jump to line:"), (cur.line + 1) + ":" + cur.ch, function(posStr) {
      if (!posStr) return;

      var match;
      if (match = /^\s*([\+\-]?\d+)\s*\:\s*(\d+)\s*$/.exec(posStr)) {
        cm.setCursor(interpretLine(cm, match[1]), Number(match[2]))
      } else if (match = /^\s*([\+\-]?\d+(\.\d+)?)\%\s*/.exec(posStr)) {
        var line = Math.round(cm.lineCount() * Number(match[1]) / 100);
        if (/^[-+]/.test(match[1])) line = cur.line + line + 1;
        cm.setCursor(line - 1, cur.ch);
      } else if (match = /^\s*\:?\s*([\+\-]?\d+)\s*/.exec(posStr)) {
        cm.setCursor(interpretLine(cm, match[1]), cur.ch);
      }
    });
  };

  CodeMirror.keyMap["default"]["Alt-G"] = "jumpToLine";
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/search/matchesonscrollbar.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"), require("./searchcursor"), require("../scroll/annotatescrollbar"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror", "./searchcursor", "../scroll/annotatescrollbar"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  CodeMirror.defineExtension("showMatchesOnScrollbar", function(query, caseFold, options) {
    if (typeof options == "string") options = {className: options};
    if (!options) options = {};
    return new SearchAnnotation(this, query, caseFold, options);
  });

  function SearchAnnotation(cm, query, caseFold, options) {
    this.cm = cm;
    this.options = options;
    var annotateOptions = {listenForChanges: false};
    for (var prop in options) annotateOptions[prop] = options[prop];
    if (!annotateOptions.className) annotateOptions.className = "CodeMirror-search-match";
    this.annotation = cm.annotateScrollbar(annotateOptions);
    this.query = query;
    this.caseFold = caseFold;
    this.gap = {from: cm.firstLine(), to: cm.lastLine() + 1};
    this.matches = [];
    this.update = null;

    this.findMatches();
    this.annotation.update(this.matches);

    var self = this;
    cm.on("change", this.changeHandler = function(_cm, change) { self.onChange(change); });
  }

  var MAX_MATCHES = 1000;

  SearchAnnotation.prototype.findMatches = function() {
    if (!this.gap) return;
    for (var i = 0; i < this.matches.length; i++) {
      var match = this.matches[i];
      if (match.from.line >= this.gap.to) break;
      if (match.to.line >= this.gap.from) this.matches.splice(i--, 1);
    }
    var cursor = this.cm.getSearchCursor(this.query, CodeMirror.Pos(this.gap.from, 0), {caseFold: this.caseFold, multiline: this.options.multiline});
    var maxMatches = this.options && this.options.maxMatches || MAX_MATCHES;
    while (cursor.findNext()) {
      var match = {from: cursor.from(), to: cursor.to()};
      if (match.from.line >= this.gap.to) break;
      this.matches.splice(i++, 0, match);
      if (this.matches.length > maxMatches) break;
    }
    this.gap = null;
  };

  function offsetLine(line, changeStart, sizeChange) {
    if (line <= changeStart) return line;
    return Math.max(changeStart, line + sizeChange);
  }

  SearchAnnotation.prototype.onChange = function(change) {
    var startLine = change.from.line;
    var endLine = CodeMirror.changeEnd(change).line;
    var sizeChange = endLine - change.to.line;
    if (this.gap) {
      this.gap.from = Math.min(offsetLine(this.gap.from, startLine, sizeChange), change.from.line);
      this.gap.to = Math.max(offsetLine(this.gap.to, startLine, sizeChange), change.from.line);
    } else {
      this.gap = {from: change.from.line, to: endLine + 1};
    }

    if (sizeChange) for (var i = 0; i < this.matches.length; i++) {
      var match = this.matches[i];
      var newFrom = offsetLine(match.from.line, startLine, sizeChange);
      if (newFrom != match.from.line) match.from = CodeMirror.Pos(newFrom, match.from.ch);
      var newTo = offsetLine(match.to.line, startLine, sizeChange);
      if (newTo != match.to.line) match.to = CodeMirror.Pos(newTo, match.to.ch);
    }
    clearTimeout(this.update);
    var self = this;
    this.update = setTimeout(function() { self.updateAfterChange(); }, 250);
  };

  SearchAnnotation.prototype.updateAfterChange = function() {
    this.findMatches();
    this.annotation.update(this.matches);
  };

  SearchAnnotation.prototype.clear = function() {
    this.cm.off("change", this.changeHandler);
    this.annotation.clear();
  };
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/search/match-highlighter.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// Highlighting text that matches the selection
//
// Defines an option highlightSelectionMatches, which, when enabled,
// will style strings that match the selection throughout the
// document.
//
// The option can be set to true to simply enable it, or to a
// {minChars, style, wordsOnly, showToken, delay} object to explicitly
// configure it. minChars is the minimum amount of characters that should be
// selected for the behavior to occur, and style is the token style to
// apply to the matches. This will be prefixed by "cm-" to create an
// actual CSS class name. If wordsOnly is enabled, the matches will be
// highlighted only if the selected text is a word. showToken, when enabled,
// will cause the current token to be highlighted when nothing is selected.
// delay is used to specify how much time to wait, in milliseconds, before
// highlighting the matches. If annotateScrollbar is enabled, the occurences
// will be highlighted on the scrollbar via the matchesonscrollbar addon.

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"), require("./matchesonscrollbar"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror", "./matchesonscrollbar"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  var defaults = {
    style: "matchhighlight",
    minChars: 2,
    delay: 100,
    wordsOnly: false,
    annotateScrollbar: false,
    showToken: false,
    trim: true
  }

  function State(options) {
    this.options = {}
    for (var name in defaults)
      this.options[name] = (options && options.hasOwnProperty(name) ? options : defaults)[name]
    this.overlay = this.timeout = null;
    this.matchesonscroll = null;
    this.active = false;
  }

  CodeMirror.defineOption("highlightSelectionMatches", false, function(cm, val, old) {
    if (old && old != CodeMirror.Init) {
      removeOverlay(cm);
      clearTimeout(cm.state.matchHighlighter.timeout);
      cm.state.matchHighlighter = null;
      cm.off("cursorActivity", cursorActivity);
      cm.off("focus", onFocus)
    }
    if (val) {
      var state = cm.state.matchHighlighter = new State(val);
      if (cm.hasFocus()) {
        state.active = true
        highlightMatches(cm)
      } else {
        cm.on("focus", onFocus)
      }
      cm.on("cursorActivity", cursorActivity);
    }
  });

  function cursorActivity(cm) {
    var state = cm.state.matchHighlighter;
    if (state.active || cm.hasFocus()) scheduleHighlight(cm, state)
  }

  function onFocus(cm) {
    var state = cm.state.matchHighlighter
    if (!state.active) {
      state.active = true
      scheduleHighlight(cm, state)
    }
  }

  function scheduleHighlight(cm, state) {
    clearTimeout(state.timeout);
    state.timeout = setTimeout(function() {highlightMatches(cm);}, state.options.delay);
  }

  function addOverlay(cm, query, hasBoundary, style) {
    var state = cm.state.matchHighlighter;
    cm.addOverlay(state.overlay = makeOverlay(query, hasBoundary, style));
    if (state.options.annotateScrollbar && cm.showMatchesOnScrollbar) {
      var searchFor = hasBoundary ? new RegExp("\\b" + query.replace(/[\\\[.+*?(){|^$]/g, "\\$&") + "\\b") : query;
      state.matchesonscroll = cm.showMatchesOnScrollbar(searchFor, false,
        {className: "CodeMirror-selection-highlight-scrollbar"});
    }
  }

  function removeOverlay(cm) {
    var state = cm.state.matchHighlighter;
    if (state.overlay) {
      cm.removeOverlay(state.overlay);
      state.overlay = null;
      if (state.matchesonscroll) {
        state.matchesonscroll.clear();
        state.matchesonscroll = null;
      }
    }
  }

  function highlightMatches(cm) {
    cm.operation(function() {
      var state = cm.state.matchHighlighter;
      removeOverlay(cm);
      if (!cm.somethingSelected() && state.options.showToken) {
        var re = state.options.showToken === true ? /[\w$]/ : state.options.showToken;
        var cur = cm.getCursor(), line = cm.getLine(cur.line), start = cur.ch, end = start;
        while (start && re.test(line.charAt(start - 1))) --start;
        while (end < line.length && re.test(line.charAt(end))) ++end;
        if (start < end)
          addOverlay(cm, line.slice(start, end), re, state.options.style);
        return;
      }
      var from = cm.getCursor("from"), to = cm.getCursor("to");
      if (from.line != to.line) return;
      if (state.options.wordsOnly && !isWord(cm, from, to)) return;
      var selection = cm.getRange(from, to)
      if (state.options.trim) selection = selection.replace(/^\s+|\s+$/g, "")
      if (selection.length >= state.options.minChars)
        addOverlay(cm, selection, false, state.options.style);
    });
  }

  function isWord(cm, from, to) {
    var str = cm.getRange(from, to);
    if (str.match(/^\w+$/) !== null) {
        if (from.ch > 0) {
            var pos = {line: from.line, ch: from.ch - 1};
            var chr = cm.getRange(pos, from);
            if (chr.match(/\W/) === null) return false;
        }
        if (to.ch < cm.getLine(from.line).length) {
            var pos = {line: to.line, ch: to.ch + 1};
            var chr = cm.getRange(to, pos);
            if (chr.match(/\W/) === null) return false;
        }
        return true;
    } else return false;
  }

  function boundariesAround(stream, re) {
    return (!stream.start || !re.test(stream.string.charAt(stream.start - 1))) &&
      (stream.pos == stream.string.length || !re.test(stream.string.charAt(stream.pos)));
  }

  function makeOverlay(query, hasBoundary, style) {
    return {token: function(stream) {
      if (stream.match(query) &&
          (!hasBoundary || boundariesAround(stream, hasBoundary)))
        return style;
      stream.next();
      stream.skipTo(query.charAt(0)) || stream.skipToEnd();
    }};
  }
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/search/search.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// Define search commands. Depends on dialog.js or another
// implementation of the openDialog method.

// Replace works a little oddly -- it will do the replace on the next
// Ctrl-G (or whatever is bound to findNext) press. You prevent a
// replace by making sure the match is no longer selected when hitting
// Ctrl-G.

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"), require("./searchcursor"), require("../dialog/dialog"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror", "./searchcursor", "../dialog/dialog"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  function searchOverlay(query, caseInsensitive) {
    if (typeof query == "string")
      query = new RegExp(query.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&"), caseInsensitive ? "gi" : "g");
    else if (!query.global)
      query = new RegExp(query.source, query.ignoreCase ? "gi" : "g");

    return {token: function(stream) {
      query.lastIndex = stream.pos;
      var match = query.exec(stream.string);
      if (match && match.index == stream.pos) {
        stream.pos += match[0].length || 1;
        return "searching";
      } else if (match) {
        stream.pos = match.index;
      } else {
        stream.skipToEnd();
      }
    }};
  }

  function SearchState() {
    this.posFrom = this.posTo = this.lastQuery = this.query = null;
    this.overlay = null;
  }

  function getSearchState(cm) {
    return cm.state.search || (cm.state.search = new SearchState());
  }

  function queryCaseInsensitive(query) {
    return typeof query == "string" && query == query.toLowerCase();
  }

  function getSearchCursor(cm, query, pos) {
    // Heuristic: if the query string is all lowercase, do a case insensitive search.
    return cm.getSearchCursor(query, pos, {caseFold: queryCaseInsensitive(query), multiline: true});
  }

  function persistentDialog(cm, text, deflt, onEnter, onKeyDown) {
    cm.openDialog(text, onEnter, {
      value: deflt,
      selectValueOnOpen: true,
      closeOnEnter: false,
      onClose: function() { clearSearch(cm); },
      onKeyDown: onKeyDown
    });
  }

  function dialog(cm, text, shortText, deflt, f) {
    if (cm.openDialog) cm.openDialog(text, f, {value: deflt, selectValueOnOpen: true});
    else f(prompt(shortText, deflt));
  }

  function confirmDialog(cm, text, shortText, fs) {
    if (cm.openConfirm) cm.openConfirm(text, fs);
    else if (confirm(shortText)) fs[0]();
  }

  function parseString(string) {
    return string.replace(/\\(.)/g, function(_, ch) {
      if (ch == "n") return "\n"
      if (ch == "r") return "\r"
      return ch
    })
  }

  function parseQuery(query) {
    var isRE = query.match(/^\/(.*)\/([a-z]*)$/);
    if (isRE) {
      try { query = new RegExp(isRE[1], isRE[2].indexOf("i") == -1 ? "" : "i"); }
      catch(e) {} // Not a regular expression after all, do a string search
    } else {
      query = parseString(query)
    }
    if (typeof query == "string" ? query == "" : query.test(""))
      query = /x^/;
    return query;
  }

  function startSearch(cm, state, query) {
    state.queryText = query;
    state.query = parseQuery(query);
    cm.removeOverlay(state.overlay, queryCaseInsensitive(state.query));
    state.overlay = searchOverlay(state.query, queryCaseInsensitive(state.query));
    cm.addOverlay(state.overlay);
    if (cm.showMatchesOnScrollbar) {
      if (state.annotate) { state.annotate.clear(); state.annotate = null; }
      state.annotate = cm.showMatchesOnScrollbar(state.query, queryCaseInsensitive(state.query));
    }
  }

  function doSearch(cm, rev, persistent, immediate) {
    var state = getSearchState(cm);
    if (state.query) return findNext(cm, rev);
    var q = cm.getSelection() || state.lastQuery;
    if (q instanceof RegExp && q.source == "x^") q = null
    if (persistent && cm.openDialog) {
      var hiding = null
      var searchNext = function(query, event) {
        CodeMirror.e_stop(event);
        if (!query) return;
        if (query != state.queryText) {
          startSearch(cm, state, query);
          state.posFrom = state.posTo = cm.getCursor();
        }
        if (hiding) hiding.style.opacity = 1
        findNext(cm, event.shiftKey, function(_, to) {
          var dialog
          if (to.line < 3 && document.querySelector &&
              (dialog = cm.display.wrapper.querySelector(".CodeMirror-dialog")) &&
              dialog.getBoundingClientRect().bottom - 4 > cm.cursorCoords(to, "window").top)
            (hiding = dialog).style.opacity = .4
        })
      };
      persistentDialog(cm, getQueryDialog(cm), q, searchNext, function(event, query) {
        var keyName = CodeMirror.keyName(event)
        var extra = cm.getOption('extraKeys'), cmd = (extra && extra[keyName]) || CodeMirror.keyMap[cm.getOption("keyMap")][keyName]
        if (cmd == "findNext" || cmd == "findPrev" ||
          cmd == "findPersistentNext" || cmd == "findPersistentPrev") {
          CodeMirror.e_stop(event);
          startSearch(cm, getSearchState(cm), query);
          cm.execCommand(cmd);
        } else if (cmd == "find" || cmd == "findPersistent") {
          CodeMirror.e_stop(event);
          searchNext(query, event);
        }
      });
      if (immediate && q) {
        startSearch(cm, state, q);
        findNext(cm, rev);
      }
    } else {
      dialog(cm, getQueryDialog(cm), "Search for:", q, function(query) {
        if (query && !state.query) cm.operation(function() {
          startSearch(cm, state, query);
          state.posFrom = state.posTo = cm.getCursor();
          findNext(cm, rev);
        });
      });
    }
  }

  function findNext(cm, rev, callback) {cm.operation(function() {
    var state = getSearchState(cm);
    var cursor = getSearchCursor(cm, state.query, rev ? state.posFrom : state.posTo);
    if (!cursor.find(rev)) {
      cursor = getSearchCursor(cm, state.query, rev ? CodeMirror.Pos(cm.lastLine()) : CodeMirror.Pos(cm.firstLine(), 0));
      if (!cursor.find(rev)) return;
    }
    cm.setSelection(cursor.from(), cursor.to());
    cm.scrollIntoView({from: cursor.from(), to: cursor.to()}, 20);
    state.posFrom = cursor.from(); state.posTo = cursor.to();
    if (callback) callback(cursor.from(), cursor.to())
  });}

  function clearSearch(cm) {cm.operation(function() {
    var state = getSearchState(cm);
    state.lastQuery = state.query;
    if (!state.query) return;
    state.query = state.queryText = null;
    cm.removeOverlay(state.overlay);
    if (state.annotate) { state.annotate.clear(); state.annotate = null; }
  });}


  function getQueryDialog(cm)  {
    return '<span class="CodeMirror-search-label">' + cm.phrase("Search:") + '</span> <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">' + cm.phrase("(Use /re/ syntax for regexp search)") + '</span>';
  }
  function getReplaceQueryDialog(cm) {
    return ' <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">' + cm.phrase("(Use /re/ syntax for regexp search)") + '</span>';
  }
  function getReplacementQueryDialog(cm) {
    return '<span class="CodeMirror-search-label">' + cm.phrase("With:") + '</span> <input type="text" style="width: 10em" class="CodeMirror-search-field"/>';
  }
  function getDoReplaceConfirm(cm) {
    return '<span class="CodeMirror-search-label">' + cm.phrase("Replace?") + '</span> <button>' + cm.phrase("Yes") + '</button> <button>' + cm.phrase("No") + '</button> <button>' + cm.phrase("All") + '</button> <button>' + cm.phrase("Stop") + '</button> ';
  }

  function replaceAll(cm, query, text) {
    cm.operation(function() {
      for (var cursor = getSearchCursor(cm, query); cursor.findNext();) {
        if (typeof query != "string") {
          var match = cm.getRange(cursor.from(), cursor.to()).match(query);
          cursor.replace(text.replace(/\$(\d)/g, function(_, i) {return match[i];}));
        } else cursor.replace(text);
      }
    });
  }

  function replace(cm, all) {
    if (cm.getOption("readOnly")) return;
    var query = cm.getSelection() || getSearchState(cm).lastQuery;
    var dialogText = '<span class="CodeMirror-search-label">' + (all ? cm.phrase("Replace all:") : cm.phrase("Replace:")) + '</span>';
    dialog(cm, dialogText + getReplaceQueryDialog(cm), dialogText, query, function(query) {
      if (!query) return;
      query = parseQuery(query);
      dialog(cm, getReplacementQueryDialog(cm), cm.phrase("Replace with:"), "", function(text) {
        text = parseString(text)
        if (all) {
          replaceAll(cm, query, text)
        } else {
          clearSearch(cm);
          var cursor = getSearchCursor(cm, query, cm.getCursor("from"));
          var advance = function() {
            var start = cursor.from(), match;
            if (!(match = cursor.findNext())) {
              cursor = getSearchCursor(cm, query);
              if (!(match = cursor.findNext()) ||
                  (start && cursor.from().line == start.line && cursor.from().ch == start.ch)) return;
            }
            cm.setSelection(cursor.from(), cursor.to());
            cm.scrollIntoView({from: cursor.from(), to: cursor.to()});
            confirmDialog(cm, getDoReplaceConfirm(cm), cm.phrase("Replace?"),
                          [function() {doReplace(match);}, advance,
                           function() {replaceAll(cm, query, text)}]);
          };
          var doReplace = function(match) {
            cursor.replace(typeof query == "string" ? text :
                           text.replace(/\$(\d)/g, function(_, i) {return match[i];}));
            advance();
          };
          advance();
        }
      });
    });
  }

  CodeMirror.commands.find = function(cm) {clearSearch(cm); doSearch(cm);};
  CodeMirror.commands.findPersistent = function(cm) {clearSearch(cm); doSearch(cm, false, true);};
  CodeMirror.commands.findPersistentNext = function(cm) {doSearch(cm, false, true, true);};
  CodeMirror.commands.findPersistentPrev = function(cm) {doSearch(cm, true, true, true);};
  CodeMirror.commands.findNext = doSearch;
  CodeMirror.commands.findPrev = function(cm) {doSearch(cm, true);};
  CodeMirror.commands.clearSearch = clearSearch;
  CodeMirror.commands.replace = replace;
  CodeMirror.commands.replaceAll = function(cm) {replace(cm, true);};
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/search/searchcursor.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"))
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod)
  else // Plain browser env
    mod(CodeMirror)
})(function(CodeMirror) {
  "use strict"
  var Pos = CodeMirror.Pos

  function regexpFlags(regexp) {
    var flags = regexp.flags
    return flags != null ? flags : (regexp.ignoreCase ? "i" : "")
      + (regexp.global ? "g" : "")
      + (regexp.multiline ? "m" : "")
  }

  function ensureFlags(regexp, flags) {
    var current = regexpFlags(regexp), target = current
    for (var i = 0; i < flags.length; i++) if (target.indexOf(flags.charAt(i)) == -1)
      target += flags.charAt(i)
    return current == target ? regexp : new RegExp(regexp.source, target)
  }

  function maybeMultiline(regexp) {
    return /\\s|\\n|\n|\\W|\\D|\[\^/.test(regexp.source)
  }

  function searchRegexpForward(doc, regexp, start) {
    regexp = ensureFlags(regexp, "g")
    for (var line = start.line, ch = start.ch, last = doc.lastLine(); line <= last; line++, ch = 0) {
      regexp.lastIndex = ch
      var string = doc.getLine(line), match = regexp.exec(string)
      if (match)
        return {from: Pos(line, match.index),
                to: Pos(line, match.index + match[0].length),
                match: match}
    }
  }

  function searchRegexpForwardMultiline(doc, regexp, start) {
    if (!maybeMultiline(regexp)) return searchRegexpForward(doc, regexp, start)

    regexp = ensureFlags(regexp, "gm")
    var string, chunk = 1
    for (var line = start.line, last = doc.lastLine(); line <= last;) {
      // This grows the search buffer in exponentially-sized chunks
      // between matches, so that nearby matches are fast and don't
      // require concatenating the whole document (in case we're
      // searching for something that has tons of matches), but at the
      // same time, the amount of retries is limited.
      for (var i = 0; i < chunk; i++) {
        if (line > last) break
        var curLine = doc.getLine(line++)
        string = string == null ? curLine : string + "\n" + curLine
      }
      chunk = chunk * 2
      regexp.lastIndex = start.ch
      var match = regexp.exec(string)
      if (match) {
        var before = string.slice(0, match.index).split("\n"), inside = match[0].split("\n")
        var startLine = start.line + before.length - 1, startCh = before[before.length - 1].length
        return {from: Pos(startLine, startCh),
                to: Pos(startLine + inside.length - 1,
                        inside.length == 1 ? startCh + inside[0].length : inside[inside.length - 1].length),
                match: match}
      }
    }
  }

  function lastMatchIn(string, regexp) {
    var cutOff = 0, match
    for (;;) {
      regexp.lastIndex = cutOff
      var newMatch = regexp.exec(string)
      if (!newMatch) return match
      match = newMatch
      cutOff = match.index + (match[0].length || 1)
      if (cutOff == string.length) return match
    }
  }

  function searchRegexpBackward(doc, regexp, start) {
    regexp = ensureFlags(regexp, "g")
    for (var line = start.line, ch = start.ch, first = doc.firstLine(); line >= first; line--, ch = -1) {
      var string = doc.getLine(line)
      if (ch > -1) string = string.slice(0, ch)
      var match = lastMatchIn(string, regexp)
      if (match)
        return {from: Pos(line, match.index),
                to: Pos(line, match.index + match[0].length),
                match: match}
    }
  }

  function searchRegexpBackwardMultiline(doc, regexp, start) {
    regexp = ensureFlags(regexp, "gm")
    var string, chunk = 1
    for (var line = start.line, first = doc.firstLine(); line >= first;) {
      for (var i = 0; i < chunk; i++) {
        var curLine = doc.getLine(line--)
        string = string == null ? curLine.slice(0, start.ch) : curLine + "\n" + string
      }
      chunk *= 2

      var match = lastMatchIn(string, regexp)
      if (match) {
        var before = string.slice(0, match.index).split("\n"), inside = match[0].split("\n")
        var startLine = line + before.length, startCh = before[before.length - 1].length
        return {from: Pos(startLine, startCh),
                to: Pos(startLine + inside.length - 1,
                        inside.length == 1 ? startCh + inside[0].length : inside[inside.length - 1].length),
                match: match}
      }
    }
  }

  var doFold, noFold
  if (String.prototype.normalize) {
    doFold = function(str) { return str.normalize("NFD").toLowerCase() }
    noFold = function(str) { return str.normalize("NFD") }
  } else {
    doFold = function(str) { return str.toLowerCase() }
    noFold = function(str) { return str }
  }

  // Maps a position in a case-folded line back to a position in the original line
  // (compensating for codepoints increasing in number during folding)
  function adjustPos(orig, folded, pos, foldFunc) {
    if (orig.length == folded.length) return pos
    for (var min = 0, max = pos + Math.max(0, orig.length - folded.length);;) {
      if (min == max) return min
      var mid = (min + max) >> 1
      var len = foldFunc(orig.slice(0, mid)).length
      if (len == pos) return mid
      else if (len > pos) max = mid
      else min = mid + 1
    }
  }

  function searchStringForward(doc, query, start, caseFold) {
    // Empty string would match anything and never progress, so we
    // define it to match nothing instead.
    if (!query.length) return null
    var fold = caseFold ? doFold : noFold
    var lines = fold(query).split(/\r|\n\r?/)

    search: for (var line = start.line, ch = start.ch, last = doc.lastLine() + 1 - lines.length; line <= last; line++, ch = 0) {
      var orig = doc.getLine(line).slice(ch), string = fold(orig)
      if (lines.length == 1) {
        var found = string.indexOf(lines[0])
        if (found == -1) continue search
        var start = adjustPos(orig, string, found, fold) + ch
        return {from: Pos(line, adjustPos(orig, string, found, fold) + ch),
                to: Pos(line, adjustPos(orig, string, found + lines[0].length, fold) + ch)}
      } else {
        var cutFrom = string.length - lines[0].length
        if (string.slice(cutFrom) != lines[0]) continue search
        for (var i = 1; i < lines.length - 1; i++)
          if (fold(doc.getLine(line + i)) != lines[i]) continue search
        var end = doc.getLine(line + lines.length - 1), endString = fold(end), lastLine = lines[lines.length - 1]
        if (endString.slice(0, lastLine.length) != lastLine) continue search
        return {from: Pos(line, adjustPos(orig, string, cutFrom, fold) + ch),
                to: Pos(line + lines.length - 1, adjustPos(end, endString, lastLine.length, fold))}
      }
    }
  }

  function searchStringBackward(doc, query, start, caseFold) {
    if (!query.length) return null
    var fold = caseFold ? doFold : noFold
    var lines = fold(query).split(/\r|\n\r?/)

    search: for (var line = start.line, ch = start.ch, first = doc.firstLine() - 1 + lines.length; line >= first; line--, ch = -1) {
      var orig = doc.getLine(line)
      if (ch > -1) orig = orig.slice(0, ch)
      var string = fold(orig)
      if (lines.length == 1) {
        var found = string.lastIndexOf(lines[0])
        if (found == -1) continue search
        return {from: Pos(line, adjustPos(orig, string, found, fold)),
                to: Pos(line, adjustPos(orig, string, found + lines[0].length, fold))}
      } else {
        var lastLine = lines[lines.length - 1]
        if (string.slice(0, lastLine.length) != lastLine) continue search
        for (var i = 1, start = line - lines.length + 1; i < lines.length - 1; i++)
          if (fold(doc.getLine(start + i)) != lines[i]) continue search
        var top = doc.getLine(line + 1 - lines.length), topString = fold(top)
        if (topString.slice(topString.length - lines[0].length) != lines[0]) continue search
        return {from: Pos(line + 1 - lines.length, adjustPos(top, topString, top.length - lines[0].length, fold)),
                to: Pos(line, adjustPos(orig, string, lastLine.length, fold))}
      }
    }
  }

  function SearchCursor(doc, query, pos, options) {
    this.atOccurrence = false
    this.doc = doc
    pos = pos ? doc.clipPos(pos) : Pos(0, 0)
    this.pos = {from: pos, to: pos}

    var caseFold
    if (typeof options == "object") {
      caseFold = options.caseFold
    } else { // Backwards compat for when caseFold was the 4th argument
      caseFold = options
      options = null
    }

    if (typeof query == "string") {
      if (caseFold == null) caseFold = false
      this.matches = function(reverse, pos) {
        return (reverse ? searchStringBackward : searchStringForward)(doc, query, pos, caseFold)
      }
    } else {
      query = ensureFlags(query, "gm")
      if (!options || options.multiline !== false)
        this.matches = function(reverse, pos) {
          return (reverse ? searchRegexpBackwardMultiline : searchRegexpForwardMultiline)(doc, query, pos)
        }
      else
        this.matches = function(reverse, pos) {
          return (reverse ? searchRegexpBackward : searchRegexpForward)(doc, query, pos)
        }
    }
  }

  SearchCursor.prototype = {
    findNext: function() {return this.find(false)},
    findPrevious: function() {return this.find(true)},

    find: function(reverse) {
      var result = this.matches(reverse, this.doc.clipPos(reverse ? this.pos.from : this.pos.to))

      // Implements weird auto-growing behavior on null-matches for
      // backwards-compatiblity with the vim code (unfortunately)
      while (result && CodeMirror.cmpPos(result.from, result.to) == 0) {
        if (reverse) {
          if (result.from.ch) result.from = Pos(result.from.line, result.from.ch - 1)
          else if (result.from.line == this.doc.firstLine()) result = null
          else result = this.matches(reverse, this.doc.clipPos(Pos(result.from.line - 1)))
        } else {
          if (result.to.ch < this.doc.getLine(result.to.line).length) result.to = Pos(result.to.line, result.to.ch + 1)
          else if (result.to.line == this.doc.lastLine()) result = null
          else result = this.matches(reverse, Pos(result.to.line + 1, 0))
        }
      }

      if (result) {
        this.pos = result
        this.atOccurrence = true
        return this.pos.match || true
      } else {
        var end = Pos(reverse ? this.doc.firstLine() : this.doc.lastLine() + 1, 0)
        this.pos = {from: end, to: end}
        return this.atOccurrence = false
      }
    },

    from: function() {if (this.atOccurrence) return this.pos.from},
    to: function() {if (this.atOccurrence) return this.pos.to},

    replace: function(newText, origin) {
      if (!this.atOccurrence) return
      var lines = CodeMirror.splitLines(newText)
      this.doc.replaceRange(lines, this.pos.from, this.pos.to, origin)
      this.pos.to = Pos(this.pos.from.line + lines.length - 1,
                        lines[lines.length - 1].length + (lines.length == 1 ? this.pos.from.ch : 0))
    }
  }

  CodeMirror.defineExtension("getSearchCursor", function(query, pos, caseFold) {
    return new SearchCursor(this.doc, query, pos, caseFold)
  })
  CodeMirror.defineDocExtension("getSearchCursor", function(query, pos, caseFold) {
    return new SearchCursor(this, query, pos, caseFold)
  })

  CodeMirror.defineExtension("selectMatches", function(query, caseFold) {
    var ranges = []
    var cur = this.getSearchCursor(query, this.getCursor("from"), caseFold)
    while (cur.findNext()) {
      if (CodeMirror.cmpPos(cur.to(), this.getCursor("to")) > 0) break
      ranges.push({anchor: cur.from(), head: cur.to()})
    }
    if (ranges.length)
      this.setSelections(ranges, 0)
  })
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/selection/active-line.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";
  var WRAP_CLASS = "CodeMirror-activeline";
  var BACK_CLASS = "CodeMirror-activeline-background";
  var GUTT_CLASS = "CodeMirror-activeline-gutter";

  CodeMirror.defineOption("styleActiveLine", false, function(cm, val, old) {
    var prev = old == CodeMirror.Init ? false : old;
    if (val == prev) return
    if (prev) {
      cm.off("beforeSelectionChange", selectionChange);
      clearActiveLines(cm);
      delete cm.state.activeLines;
    }
    if (val) {
      cm.state.activeLines = [];
      updateActiveLines(cm, cm.listSelections());
      cm.on("beforeSelectionChange", selectionChange);
    }
  });

  function clearActiveLines(cm) {
    for (var i = 0; i < cm.state.activeLines.length; i++) {
      cm.removeLineClass(cm.state.activeLines[i], "wrap", WRAP_CLASS);
      cm.removeLineClass(cm.state.activeLines[i], "background", BACK_CLASS);
      cm.removeLineClass(cm.state.activeLines[i], "gutter", GUTT_CLASS);
    }
  }

  function sameArray(a, b) {
    if (a.length != b.length) return false;
    for (var i = 0; i < a.length; i++)
      if (a[i] != b[i]) return false;
    return true;
  }

  function updateActiveLines(cm, ranges) {
    var active = [];
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i];
      var option = cm.getOption("styleActiveLine");
      if (typeof option == "object" && option.nonEmpty ? range.anchor.line != range.head.line : !range.empty())
        continue
      var line = cm.getLineHandleVisualStart(range.head.line);
      if (active[active.length - 1] != line) active.push(line);
    }
    if (sameArray(cm.state.activeLines, active)) return;
    cm.operation(function() {
      clearActiveLines(cm);
      for (var i = 0; i < active.length; i++) {
        cm.addLineClass(active[i], "wrap", WRAP_CLASS);
        cm.addLineClass(active[i], "background", BACK_CLASS);
        cm.addLineClass(active[i], "gutter", GUTT_CLASS);
      }
      cm.state.activeLines = active;
    });
  }

  function selectionChange(cm, sel) {
    updateActiveLines(cm, sel.ranges);
  }
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/selection/mark-selection.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// Because sometimes you need to mark the selected *text*.
//
// Adds an option 'styleSelectedText' which, when enabled, gives
// selected text the CSS class given as option value, or
// "CodeMirror-selectedtext" when the value is not a string.

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  CodeMirror.defineOption("styleSelectedText", false, function(cm, val, old) {
    var prev = old && old != CodeMirror.Init;
    if (val && !prev) {
      cm.state.markedSelection = [];
      cm.state.markedSelectionStyle = typeof val == "string" ? val : "CodeMirror-selectedtext";
      reset(cm);
      cm.on("cursorActivity", onCursorActivity);
      cm.on("change", onChange);
    } else if (!val && prev) {
      cm.off("cursorActivity", onCursorActivity);
      cm.off("change", onChange);
      clear(cm);
      cm.state.markedSelection = cm.state.markedSelectionStyle = null;
    }
  });

  function onCursorActivity(cm) {
    if (cm.state.markedSelection)
      cm.operation(function() { update(cm); });
  }

  function onChange(cm) {
    if (cm.state.markedSelection && cm.state.markedSelection.length)
      cm.operation(function() { clear(cm); });
  }

  var CHUNK_SIZE = 8;
  var Pos = CodeMirror.Pos;
  var cmp = CodeMirror.cmpPos;

  function coverRange(cm, from, to, addAt) {
    if (cmp(from, to) == 0) return;
    var array = cm.state.markedSelection;
    var cls = cm.state.markedSelectionStyle;
    for (var line = from.line;;) {
      var start = line == from.line ? from : Pos(line, 0);
      var endLine = line + CHUNK_SIZE, atEnd = endLine >= to.line;
      var end = atEnd ? to : Pos(endLine, 0);
      var mark = cm.markText(start, end, {className: cls});
      if (addAt == null) array.push(mark);
      else array.splice(addAt++, 0, mark);
      if (atEnd) break;
      line = endLine;
    }
  }

  function clear(cm) {
    var array = cm.state.markedSelection;
    for (var i = 0; i < array.length; ++i) array[i].clear();
    array.length = 0;
  }

  function reset(cm) {
    clear(cm);
    var ranges = cm.listSelections();
    for (var i = 0; i < ranges.length; i++)
      coverRange(cm, ranges[i].from(), ranges[i].to());
  }

  function update(cm) {
    if (!cm.somethingSelected()) return clear(cm);
    if (cm.listSelections().length > 1) return reset(cm);

    var from = cm.getCursor("start"), to = cm.getCursor("end");

    var array = cm.state.markedSelection;
    if (!array.length) return coverRange(cm, from, to);

    var coverStart = array[0].find(), coverEnd = array[array.length - 1].find();
    if (!coverStart || !coverEnd || to.line - from.line <= CHUNK_SIZE ||
        cmp(from, coverEnd.to) >= 0 || cmp(to, coverStart.from) <= 0)
      return reset(cm);

    while (cmp(from, coverStart.from) > 0) {
      array.shift().clear();
      coverStart = array[0].find();
    }
    if (cmp(from, coverStart.from) < 0) {
      if (coverStart.to.line - from.line < CHUNK_SIZE) {
        array.shift().clear();
        coverRange(cm, from, coverStart.to, 0);
      } else {
        coverRange(cm, from, coverStart.from, 0);
      }
    }

    while (cmp(to, coverEnd.to) < 0) {
      array.pop().clear();
      coverEnd = array[array.length - 1].find();
    }
    if (cmp(to, coverEnd.to) > 0) {
      if (to.line - coverEnd.from.line < CHUNK_SIZE) {
        array.pop().clear();
        coverRange(cm, coverEnd.from, to);
      } else {
        coverRange(cm, coverEnd.to, to);
      }
    }
  }
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/selection/selection-pointer.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  CodeMirror.defineOption("selectionPointer", false, function(cm, val) {
    var data = cm.state.selectionPointer;
    if (data) {
      CodeMirror.off(cm.getWrapperElement(), "mousemove", data.mousemove);
      CodeMirror.off(cm.getWrapperElement(), "mouseout", data.mouseout);
      CodeMirror.off(window, "scroll", data.windowScroll);
      cm.off("cursorActivity", reset);
      cm.off("scroll", reset);
      cm.state.selectionPointer = null;
      cm.display.lineDiv.style.cursor = "";
    }
    if (val) {
      data = cm.state.selectionPointer = {
        value: typeof val == "string" ? val : "default",
        mousemove: function(event) { mousemove(cm, event); },
        mouseout: function(event) { mouseout(cm, event); },
        windowScroll: function() { reset(cm); },
        rects: null,
        mouseX: null, mouseY: null,
        willUpdate: false
      };
      CodeMirror.on(cm.getWrapperElement(), "mousemove", data.mousemove);
      CodeMirror.on(cm.getWrapperElement(), "mouseout", data.mouseout);
      CodeMirror.on(window, "scroll", data.windowScroll);
      cm.on("cursorActivity", reset);
      cm.on("scroll", reset);
    }
  });

  function mousemove(cm, event) {
    var data = cm.state.selectionPointer;
    if (event.buttons == null ? event.which : event.buttons) {
      data.mouseX = data.mouseY = null;
    } else {
      data.mouseX = event.clientX;
      data.mouseY = event.clientY;
    }
    scheduleUpdate(cm);
  }

  function mouseout(cm, event) {
    if (!cm.getWrapperElement().contains(event.relatedTarget)) {
      var data = cm.state.selectionPointer;
      data.mouseX = data.mouseY = null;
      scheduleUpdate(cm);
    }
  }

  function reset(cm) {
    cm.state.selectionPointer.rects = null;
    scheduleUpdate(cm);
  }

  function scheduleUpdate(cm) {
    if (!cm.state.selectionPointer.willUpdate) {
      cm.state.selectionPointer.willUpdate = true;
      setTimeout(function() {
        update(cm);
        cm.state.selectionPointer.willUpdate = false;
      }, 50);
    }
  }

  function update(cm) {
    var data = cm.state.selectionPointer;
    if (!data) return;
    if (data.rects == null && data.mouseX != null) {
      data.rects = [];
      if (cm.somethingSelected()) {
        for (var sel = cm.display.selectionDiv.firstChild; sel; sel = sel.nextSibling)
          data.rects.push(sel.getBoundingClientRect());
      }
    }
    var inside = false;
    if (data.mouseX != null) for (var i = 0; i < data.rects.length; i++) {
      var rect = data.rects[i];
      if (rect.left <= data.mouseX && rect.right >= data.mouseX &&
          rect.top <= data.mouseY && rect.bottom >= data.mouseY)
        inside = true;
    }
    var cursor = inside ? data.value : "";
    if (cm.display.lineDiv.style.cursor != cursor)
      cm.display.lineDiv.style.cursor = cursor;
  }
});
/* --------------------------------------------------------------
         js/libs/codemirror/addon/tern/tern.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// Glue code between CodeMirror and Tern.
//
// Create a CodeMirror.TernServer to wrap an actual Tern server,
// register open documents (CodeMirror.Doc instances) with it, and
// call its methods to activate the assisting functions that Tern
// provides.
//
// Options supported (all optional):
// * defs: An array of JSON definition data structures.
// * plugins: An object mapping plugin names to configuration
//   options.
// * getFile: A function(name, c) that can be used to access files in
//   the project that haven't been loaded yet. Simply do c(null) to
//   indicate that a file is not available.
// * fileFilter: A function(value, docName, doc) that will be applied
//   to documents before passing them on to Tern.
// * switchToDoc: A function(name, doc) that should, when providing a
//   multi-file view, switch the view or focus to the named file.
// * showError: A function(editor, message) that can be used to
//   override the way errors are displayed.
// * completionTip: Customize the content in tooltips for completions.
//   Is passed a single argument—the completion's data as returned by
//   Tern—and may return a string, DOM node, or null to indicate that
//   no tip should be shown. By default the docstring is shown.
// * typeTip: Like completionTip, but for the tooltips shown for type
//   queries.
// * responseFilter: A function(doc, query, request, error, data) that
//   will be applied to the Tern responses before treating them
//
//
// It is possible to run the Tern server in a web worker by specifying
// these additional options:
// * useWorker: Set to true to enable web worker mode. You'll probably
//   want to feature detect the actual value you use here, for example
//   !!window.Worker.
// * workerScript: The main script of the worker. Point this to
//   wherever you are hosting worker.js from this directory.
// * workerDeps: An array of paths pointing (relative to workerScript)
//   to the Acorn and Tern libraries and any Tern plugins you want to
//   load. Or, if you minified those into a single script and included
//   them in the workerScript, simply leave this undefined.

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";
  // declare global: tern

  CodeMirror.TernServer = function(options) {
    var self = this;
    this.options = options || {};
    var plugins = this.options.plugins || (this.options.plugins = {});
    if (!plugins.doc_comment) plugins.doc_comment = true;
    this.docs = Object.create(null);
    if (this.options.useWorker) {
      this.server = new WorkerServer(this);
    } else {
      this.server = new tern.Server({
        getFile: function(name, c) { return getFile(self, name, c); },
        async: true,
        defs: this.options.defs || [],
        plugins: plugins
      });
    }
    this.trackChange = function(doc, change) { trackChange(self, doc, change); };

    this.cachedArgHints = null;
    this.activeArgHints = null;
    this.jumpStack = [];

    this.getHint = function(cm, c) { return hint(self, cm, c); };
    this.getHint.async = true;
  };

  CodeMirror.TernServer.prototype = {
    addDoc: function(name, doc) {
      var data = {doc: doc, name: name, changed: null};
      this.server.addFile(name, docValue(this, data));
      CodeMirror.on(doc, "change", this.trackChange);
      return this.docs[name] = data;
    },

    delDoc: function(id) {
      var found = resolveDoc(this, id);
      if (!found) return;
      CodeMirror.off(found.doc, "change", this.trackChange);
      delete this.docs[found.name];
      this.server.delFile(found.name);
    },

    hideDoc: function(id) {
      closeArgHints(this);
      var found = resolveDoc(this, id);
      if (found && found.changed) sendDoc(this, found);
    },

    complete: function(cm) {
      cm.showHint({hint: this.getHint});
    },

    showType: function(cm, pos, c) { showContextInfo(this, cm, pos, "type", c); },

    showDocs: function(cm, pos, c) { showContextInfo(this, cm, pos, "documentation", c); },

    updateArgHints: function(cm) { updateArgHints(this, cm); },

    jumpToDef: function(cm) { jumpToDef(this, cm); },

    jumpBack: function(cm) { jumpBack(this, cm); },

    rename: function(cm) { rename(this, cm); },

    selectName: function(cm) { selectName(this, cm); },

    request: function (cm, query, c, pos) {
      var self = this;
      var doc = findDoc(this, cm.getDoc());
      var request = buildRequest(this, doc, query, pos);
      var extraOptions = request.query && this.options.queryOptions && this.options.queryOptions[request.query.type]
      if (extraOptions) for (var prop in extraOptions) request.query[prop] = extraOptions[prop];

      this.server.request(request, function (error, data) {
        if (!error && self.options.responseFilter)
          data = self.options.responseFilter(doc, query, request, error, data);
        c(error, data);
      });
    },

    destroy: function () {
      closeArgHints(this)
      if (this.worker) {
        this.worker.terminate();
        this.worker = null;
      }
    }
  };

  var Pos = CodeMirror.Pos;
  var cls = "CodeMirror-Tern-";
  var bigDoc = 250;

  function getFile(ts, name, c) {
    var buf = ts.docs[name];
    if (buf)
      c(docValue(ts, buf));
    else if (ts.options.getFile)
      ts.options.getFile(name, c);
    else
      c(null);
  }

  function findDoc(ts, doc, name) {
    for (var n in ts.docs) {
      var cur = ts.docs[n];
      if (cur.doc == doc) return cur;
    }
    if (!name) for (var i = 0;; ++i) {
      n = "[doc" + (i || "") + "]";
      if (!ts.docs[n]) { name = n; break; }
    }
    return ts.addDoc(name, doc);
  }

  function resolveDoc(ts, id) {
    if (typeof id == "string") return ts.docs[id];
    if (id instanceof CodeMirror) id = id.getDoc();
    if (id instanceof CodeMirror.Doc) return findDoc(ts, id);
  }

  function trackChange(ts, doc, change) {
    var data = findDoc(ts, doc);

    var argHints = ts.cachedArgHints;
    if (argHints && argHints.doc == doc && cmpPos(argHints.start, change.to) >= 0)
      ts.cachedArgHints = null;

    var changed = data.changed;
    if (changed == null)
      data.changed = changed = {from: change.from.line, to: change.from.line};
    var end = change.from.line + (change.text.length - 1);
    if (change.from.line < changed.to) changed.to = changed.to - (change.to.line - end);
    if (end >= changed.to) changed.to = end + 1;
    if (changed.from > change.from.line) changed.from = change.from.line;

    if (doc.lineCount() > bigDoc && change.to - changed.from > 100) setTimeout(function() {
      if (data.changed && data.changed.to - data.changed.from > 100) sendDoc(ts, data);
    }, 200);
  }

  function sendDoc(ts, doc) {
    ts.server.request({files: [{type: "full", name: doc.name, text: docValue(ts, doc)}]}, function(error) {
      if (error) window.console.error(error);
      else doc.changed = null;
    });
  }

  // Completion

  function hint(ts, cm, c) {
    ts.request(cm, {type: "completions", types: true, docs: true, urls: true}, function(error, data) {
      if (error) return showError(ts, cm, error);
      var completions = [], after = "";
      var from = data.start, to = data.end;
      if (cm.getRange(Pos(from.line, from.ch - 2), from) == "[\"" &&
          cm.getRange(to, Pos(to.line, to.ch + 2)) != "\"]")
        after = "\"]";

      for (var i = 0; i < data.completions.length; ++i) {
        var completion = data.completions[i], className = typeToIcon(completion.type);
        if (data.guess) className += " " + cls + "guess";
        completions.push({text: completion.name + after,
                          displayText: completion.displayName || completion.name,
                          className: className,
                          data: completion});
      }

      var obj = {from: from, to: to, list: completions};
      var tooltip = null;
      CodeMirror.on(obj, "close", function() { remove(tooltip); });
      CodeMirror.on(obj, "update", function() { remove(tooltip); });
      CodeMirror.on(obj, "select", function(cur, node) {
        remove(tooltip);
        var content = ts.options.completionTip ? ts.options.completionTip(cur.data) : cur.data.doc;
        if (content) {
          tooltip = makeTooltip(node.parentNode.getBoundingClientRect().right + window.pageXOffset,
                                node.getBoundingClientRect().top + window.pageYOffset, content);
          tooltip.className += " " + cls + "hint-doc";
        }
      });
      c(obj);
    });
  }

  function typeToIcon(type) {
    var suffix;
    if (type == "?") suffix = "unknown";
    else if (type == "number" || type == "string" || type == "bool") suffix = type;
    else if (/^fn\(/.test(type)) suffix = "fn";
    else if (/^\[/.test(type)) suffix = "array";
    else suffix = "object";
    return cls + "completion " + cls + "completion-" + suffix;
  }

  // Type queries

  function showContextInfo(ts, cm, pos, queryName, c) {
    ts.request(cm, queryName, function(error, data) {
      if (error) return showError(ts, cm, error);
      if (ts.options.typeTip) {
        var tip = ts.options.typeTip(data);
      } else {
        var tip = elt("span", null, elt("strong", null, data.type || "not found"));
        if (data.doc)
          tip.appendChild(document.createTextNode(" — " + data.doc));
        if (data.url) {
          tip.appendChild(document.createTextNode(" "));
          var child = tip.appendChild(elt("a", null, "[docs]"));
          child.href = data.url;
          child.target = "_blank";
        }
      }
      tempTooltip(cm, tip, ts);
      if (c) c();
    }, pos);
  }

  // Maintaining argument hints

  function updateArgHints(ts, cm) {
    closeArgHints(ts);

    if (cm.somethingSelected()) return;
    var state = cm.getTokenAt(cm.getCursor()).state;
    var inner = CodeMirror.innerMode(cm.getMode(), state);
    if (inner.mode.name != "javascript") return;
    var lex = inner.state.lexical;
    if (lex.info != "call") return;

    var ch, argPos = lex.pos || 0, tabSize = cm.getOption("tabSize");
    for (var line = cm.getCursor().line, e = Math.max(0, line - 9), found = false; line >= e; --line) {
      var str = cm.getLine(line), extra = 0;
      for (var pos = 0;;) {
        var tab = str.indexOf("\t", pos);
        if (tab == -1) break;
        extra += tabSize - (tab + extra) % tabSize - 1;
        pos = tab + 1;
      }
      ch = lex.column - extra;
      if (str.charAt(ch) == "(") {found = true; break;}
    }
    if (!found) return;

    var start = Pos(line, ch);
    var cache = ts.cachedArgHints;
    if (cache && cache.doc == cm.getDoc() && cmpPos(start, cache.start) == 0)
      return showArgHints(ts, cm, argPos);

    ts.request(cm, {type: "type", preferFunction: true, end: start}, function(error, data) {
      if (error || !data.type || !(/^fn\(/).test(data.type)) return;
      ts.cachedArgHints = {
        start: start,
        type: parseFnType(data.type),
        name: data.exprName || data.name || "fn",
        guess: data.guess,
        doc: cm.getDoc()
      };
      showArgHints(ts, cm, argPos);
    });
  }

  function showArgHints(ts, cm, pos) {
    closeArgHints(ts);

    var cache = ts.cachedArgHints, tp = cache.type;
    var tip = elt("span", cache.guess ? cls + "fhint-guess" : null,
                  elt("span", cls + "fname", cache.name), "(");
    for (var i = 0; i < tp.args.length; ++i) {
      if (i) tip.appendChild(document.createTextNode(", "));
      var arg = tp.args[i];
      tip.appendChild(elt("span", cls + "farg" + (i == pos ? " " + cls + "farg-current" : ""), arg.name || "?"));
      if (arg.type != "?") {
        tip.appendChild(document.createTextNode(":\u00a0"));
        tip.appendChild(elt("span", cls + "type", arg.type));
      }
    }
    tip.appendChild(document.createTextNode(tp.rettype ? ") ->\u00a0" : ")"));
    if (tp.rettype) tip.appendChild(elt("span", cls + "type", tp.rettype));
    var place = cm.cursorCoords(null, "page");
    var tooltip = ts.activeArgHints = makeTooltip(place.right + 1, place.bottom, tip)
    setTimeout(function() {
      tooltip.clear = onEditorActivity(cm, function() {
        if (ts.activeArgHints == tooltip) closeArgHints(ts) })
    }, 20)
  }

  function parseFnType(text) {
    var args = [], pos = 3;

    function skipMatching(upto) {
      var depth = 0, start = pos;
      for (;;) {
        var next = text.charAt(pos);
        if (upto.test(next) && !depth) return text.slice(start, pos);
        if (/[{\[\(]/.test(next)) ++depth;
        else if (/[}\]\)]/.test(next)) --depth;
        ++pos;
      }
    }

    // Parse arguments
    if (text.charAt(pos) != ")") for (;;) {
      var name = text.slice(pos).match(/^([^, \(\[\{]+): /);
      if (name) {
        pos += name[0].length;
        name = name[1];
      }
      args.push({name: name, type: skipMatching(/[\),]/)});
      if (text.charAt(pos) == ")") break;
      pos += 2;
    }

    var rettype = text.slice(pos).match(/^\) -> (.*)$/);

    return {args: args, rettype: rettype && rettype[1]};
  }

  // Moving to the definition of something

  function jumpToDef(ts, cm) {
    function inner(varName) {
      var req = {type: "definition", variable: varName || null};
      var doc = findDoc(ts, cm.getDoc());
      ts.server.request(buildRequest(ts, doc, req), function(error, data) {
        if (error) return showError(ts, cm, error);
        if (!data.file && data.url) { window.open(data.url); return; }

        if (data.file) {
          var localDoc = ts.docs[data.file], found;
          if (localDoc && (found = findContext(localDoc.doc, data))) {
            ts.jumpStack.push({file: doc.name,
                               start: cm.getCursor("from"),
                               end: cm.getCursor("to")});
            moveTo(ts, doc, localDoc, found.start, found.end);
            return;
          }
        }
        showError(ts, cm, "Could not find a definition.");
      });
    }

    if (!atInterestingExpression(cm))
      dialog(cm, "Jump to variable", function(name) { if (name) inner(name); });
    else
      inner();
  }

  function jumpBack(ts, cm) {
    var pos = ts.jumpStack.pop(), doc = pos && ts.docs[pos.file];
    if (!doc) return;
    moveTo(ts, findDoc(ts, cm.getDoc()), doc, pos.start, pos.end);
  }

  function moveTo(ts, curDoc, doc, start, end) {
    doc.doc.setSelection(start, end);
    if (curDoc != doc && ts.options.switchToDoc) {
      closeArgHints(ts);
      ts.options.switchToDoc(doc.name, doc.doc);
    }
  }

  // The {line,ch} representation of positions makes this rather awkward.
  function findContext(doc, data) {
    var before = data.context.slice(0, data.contextOffset).split("\n");
    var startLine = data.start.line - (before.length - 1);
    var start = Pos(startLine, (before.length == 1 ? data.start.ch : doc.getLine(startLine).length) - before[0].length);

    var text = doc.getLine(startLine).slice(start.ch);
    for (var cur = startLine + 1; cur < doc.lineCount() && text.length < data.context.length; ++cur)
      text += "\n" + doc.getLine(cur);
    if (text.slice(0, data.context.length) == data.context) return data;

    var cursor = doc.getSearchCursor(data.context, 0, false);
    var nearest, nearestDist = Infinity;
    while (cursor.findNext()) {
      var from = cursor.from(), dist = Math.abs(from.line - start.line) * 10000;
      if (!dist) dist = Math.abs(from.ch - start.ch);
      if (dist < nearestDist) { nearest = from; nearestDist = dist; }
    }
    if (!nearest) return null;

    if (before.length == 1)
      nearest.ch += before[0].length;
    else
      nearest = Pos(nearest.line + (before.length - 1), before[before.length - 1].length);
    if (data.start.line == data.end.line)
      var end = Pos(nearest.line, nearest.ch + (data.end.ch - data.start.ch));
    else
      var end = Pos(nearest.line + (data.end.line - data.start.line), data.end.ch);
    return {start: nearest, end: end};
  }

  function atInterestingExpression(cm) {
    var pos = cm.getCursor("end"), tok = cm.getTokenAt(pos);
    if (tok.start < pos.ch && tok.type == "comment") return false;
    return /[\w)\]]/.test(cm.getLine(pos.line).slice(Math.max(pos.ch - 1, 0), pos.ch + 1));
  }

  // Variable renaming

  function rename(ts, cm) {
    var token = cm.getTokenAt(cm.getCursor());
    if (!/\w/.test(token.string)) return showError(ts, cm, "Not at a variable");
    dialog(cm, "New name for " + token.string, function(newName) {
      ts.request(cm, {type: "rename", newName: newName, fullDocs: true}, function(error, data) {
        if (error) return showError(ts, cm, error);
        applyChanges(ts, data.changes);
      });
    });
  }

  function selectName(ts, cm) {
    var name = findDoc(ts, cm.doc).name;
    ts.request(cm, {type: "refs"}, function(error, data) {
      if (error) return showError(ts, cm, error);
      var ranges = [], cur = 0;
      var curPos = cm.getCursor();
      for (var i = 0; i < data.refs.length; i++) {
        var ref = data.refs[i];
        if (ref.file == name) {
          ranges.push({anchor: ref.start, head: ref.end});
          if (cmpPos(curPos, ref.start) >= 0 && cmpPos(curPos, ref.end) <= 0)
            cur = ranges.length - 1;
        }
      }
      cm.setSelections(ranges, cur);
    });
  }

  var nextChangeOrig = 0;
  function applyChanges(ts, changes) {
    var perFile = Object.create(null);
    for (var i = 0; i < changes.length; ++i) {
      var ch = changes[i];
      (perFile[ch.file] || (perFile[ch.file] = [])).push(ch);
    }
    for (var file in perFile) {
      var known = ts.docs[file], chs = perFile[file];;
      if (!known) continue;
      chs.sort(function(a, b) { return cmpPos(b.start, a.start); });
      var origin = "*rename" + (++nextChangeOrig);
      for (var i = 0; i < chs.length; ++i) {
        var ch = chs[i];
        known.doc.replaceRange(ch.text, ch.start, ch.end, origin);
      }
    }
  }

  // Generic request-building helper

  function buildRequest(ts, doc, query, pos) {
    var files = [], offsetLines = 0, allowFragments = !query.fullDocs;
    if (!allowFragments) delete query.fullDocs;
    if (typeof query == "string") query = {type: query};
    query.lineCharPositions = true;
    if (query.end == null) {
      query.end = pos || doc.doc.getCursor("end");
      if (doc.doc.somethingSelected())
        query.start = doc.doc.getCursor("start");
    }
    var startPos = query.start || query.end;

    if (doc.changed) {
      if (doc.doc.lineCount() > bigDoc && allowFragments !== false &&
          doc.changed.to - doc.changed.from < 100 &&
          doc.changed.from <= startPos.line && doc.changed.to > query.end.line) {
        files.push(getFragmentAround(doc, startPos, query.end));
        query.file = "#0";
        var offsetLines = files[0].offsetLines;
        if (query.start != null) query.start = Pos(query.start.line - -offsetLines, query.start.ch);
        query.end = Pos(query.end.line - offsetLines, query.end.ch);
      } else {
        files.push({type: "full",
                    name: doc.name,
                    text: docValue(ts, doc)});
        query.file = doc.name;
        doc.changed = null;
      }
    } else {
      query.file = doc.name;
    }
    for (var name in ts.docs) {
      var cur = ts.docs[name];
      if (cur.changed && cur != doc) {
        files.push({type: "full", name: cur.name, text: docValue(ts, cur)});
        cur.changed = null;
      }
    }

    return {query: query, files: files};
  }

  function getFragmentAround(data, start, end) {
    var doc = data.doc;
    var minIndent = null, minLine = null, endLine, tabSize = 4;
    for (var p = start.line - 1, min = Math.max(0, p - 50); p >= min; --p) {
      var line = doc.getLine(p), fn = line.search(/\bfunction\b/);
      if (fn < 0) continue;
      var indent = CodeMirror.countColumn(line, null, tabSize);
      if (minIndent != null && minIndent <= indent) continue;
      minIndent = indent;
      minLine = p;
    }
    if (minLine == null) minLine = min;
    var max = Math.min(doc.lastLine(), end.line + 20);
    if (minIndent == null || minIndent == CodeMirror.countColumn(doc.getLine(start.line), null, tabSize))
      endLine = max;
    else for (endLine = end.line + 1; endLine < max; ++endLine) {
      var indent = CodeMirror.countColumn(doc.getLine(endLine), null, tabSize);
      if (indent <= minIndent) break;
    }
    var from = Pos(minLine, 0);

    return {type: "part",
            name: data.name,
            offsetLines: from.line,
            text: doc.getRange(from, Pos(endLine, end.line == endLine ? null : 0))};
  }

  // Generic utilities

  var cmpPos = CodeMirror.cmpPos;

  function elt(tagname, cls /*, ... elts*/) {
    var e = document.createElement(tagname);
    if (cls) e.className = cls;
    for (var i = 2; i < arguments.length; ++i) {
      var elt = arguments[i];
      if (typeof elt == "string") elt = document.createTextNode(elt);
      e.appendChild(elt);
    }
    return e;
  }

  function dialog(cm, text, f) {
    if (cm.openDialog)
      cm.openDialog(text + ": <input type=text>", f);
    else
      f(prompt(text, ""));
  }

  // Tooltips

  function tempTooltip(cm, content, ts) {
    if (cm.state.ternTooltip) remove(cm.state.ternTooltip);
    var where = cm.cursorCoords();
    var tip = cm.state.ternTooltip = makeTooltip(where.right + 1, where.bottom, content);
    function maybeClear() {
      old = true;
      if (!mouseOnTip) clear();
    }
    function clear() {
      cm.state.ternTooltip = null;
      if (tip.parentNode) fadeOut(tip)
      clearActivity()
    }
    var mouseOnTip = false, old = false;
    CodeMirror.on(tip, "mousemove", function() { mouseOnTip = true; });
    CodeMirror.on(tip, "mouseout", function(e) {
      var related = e.relatedTarget || e.toElement
      if (!related || !CodeMirror.contains(tip, related)) {
        if (old) clear();
        else mouseOnTip = false;
      }
    });
    setTimeout(maybeClear, ts.options.hintDelay ? ts.options.hintDelay : 1700);
    var clearActivity = onEditorActivity(cm, clear)
  }

  function onEditorActivity(cm, f) {
    cm.on("cursorActivity", f)
    cm.on("blur", f)
    cm.on("scroll", f)
    cm.on("setDoc", f)
    return function() {
      cm.off("cursorActivity", f)
      cm.off("blur", f)
      cm.off("scroll", f)
      cm.off("setDoc", f)
    }
  }

  function makeTooltip(x, y, content) {
    var node = elt("div", cls + "tooltip", content);
    node.style.left = x + "px";
    node.style.top = y + "px";
    document.body.appendChild(node);
    return node;
  }

  function remove(node) {
    var p = node && node.parentNode;
    if (p) p.removeChild(node);
  }

  function fadeOut(tooltip) {
    tooltip.style.opacity = "0";
    setTimeout(function() { remove(tooltip); }, 1100);
  }

  function showError(ts, cm, msg) {
    if (ts.options.showError)
      ts.options.showError(cm, msg);
    else
      tempTooltip(cm, String(msg), ts);
  }

  function closeArgHints(ts) {
    if (ts.activeArgHints) {
      if (ts.activeArgHints.clear) ts.activeArgHints.clear()
      remove(ts.activeArgHints)
      ts.activeArgHints = null
    }
  }

  function docValue(ts, doc) {
    var val = doc.doc.getValue();
    if (ts.options.fileFilter) val = ts.options.fileFilter(val, doc.name, doc.doc);
    return val;
  }

  // Worker wrapper

  function WorkerServer(ts) {
    var worker = ts.worker = new Worker(ts.options.workerScript);
    worker.postMessage({type: "init",
                        defs: ts.options.defs,
                        plugins: ts.options.plugins,
                        scripts: ts.options.workerDeps});
    var msgId = 0, pending = {};

    function send(data, c) {
      if (c) {
        data.id = ++msgId;
        pending[msgId] = c;
      }
      worker.postMessage(data);
    }
    worker.onmessage = function(e) {
      var data = e.data;
      if (data.type == "getFile") {
        getFile(ts, data.name, function(err, text) {
          send({type: "getFile", err: String(err), text: text, id: data.id});
        });
      } else if (data.type == "debug") {
        window.console.log(data.message);
      } else if (data.id && pending[data.id]) {
        pending[data.id](data.err, data.body);
        delete pending[data.id];
      }
    };
    worker.onerror = function(e) {
      for (var id in pending) pending[id](e);
      pending = {};
    };

    this.addFile = function(name, text) { send({type: "add", name: name, text: text}); };
    this.delFile = function(name) { send({type: "del", name: name}); };
    this.request = function(body, c) { send({type: "req", body: body}, c); };
  }
});
/* --------------------------------------------------------------
         js/libs/codemirror/keymap/emacs.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  var Pos = CodeMirror.Pos;
  function posEq(a, b) { return a.line == b.line && a.ch == b.ch; }

  // Kill 'ring'

  var killRing = [];
  function addToRing(str) {
    killRing.push(str);
    if (killRing.length > 50) killRing.shift();
  }
  function growRingTop(str) {
    if (!killRing.length) return addToRing(str);
    killRing[killRing.length - 1] += str;
  }
  function getFromRing(n) { return killRing[killRing.length - (n ? Math.min(n, 1) : 1)] || ""; }
  function popFromRing() { if (killRing.length > 1) killRing.pop(); return getFromRing(); }

  var lastKill = null;

  function kill(cm, from, to, ring, text) {
    if (text == null) text = cm.getRange(from, to);

    if (ring == "grow" && lastKill && lastKill.cm == cm && posEq(from, lastKill.pos) && cm.isClean(lastKill.gen))
      growRingTop(text);
    else if (ring !== false)
      addToRing(text);
    cm.replaceRange("", from, to, "+delete");

    if (ring == "grow") lastKill = {cm: cm, pos: from, gen: cm.changeGeneration()};
    else lastKill = null;
  }

  // Boundaries of various units

  function byChar(cm, pos, dir) {
    return cm.findPosH(pos, dir, "char", true);
  }

  function byWord(cm, pos, dir) {
    return cm.findPosH(pos, dir, "word", true);
  }

  function byLine(cm, pos, dir) {
    return cm.findPosV(pos, dir, "line", cm.doc.sel.goalColumn);
  }

  function byPage(cm, pos, dir) {
    return cm.findPosV(pos, dir, "page", cm.doc.sel.goalColumn);
  }

  function byParagraph(cm, pos, dir) {
    var no = pos.line, line = cm.getLine(no);
    var sawText = /\S/.test(dir < 0 ? line.slice(0, pos.ch) : line.slice(pos.ch));
    var fst = cm.firstLine(), lst = cm.lastLine();
    for (;;) {
      no += dir;
      if (no < fst || no > lst)
        return cm.clipPos(Pos(no - dir, dir < 0 ? 0 : null));
      line = cm.getLine(no);
      var hasText = /\S/.test(line);
      if (hasText) sawText = true;
      else if (sawText) return Pos(no, 0);
    }
  }

  function bySentence(cm, pos, dir) {
    var line = pos.line, ch = pos.ch;
    var text = cm.getLine(pos.line), sawWord = false;
    for (;;) {
      var next = text.charAt(ch + (dir < 0 ? -1 : 0));
      if (!next) { // End/beginning of line reached
        if (line == (dir < 0 ? cm.firstLine() : cm.lastLine())) return Pos(line, ch);
        text = cm.getLine(line + dir);
        if (!/\S/.test(text)) return Pos(line, ch);
        line += dir;
        ch = dir < 0 ? text.length : 0;
        continue;
      }
      if (sawWord && /[!?.]/.test(next)) return Pos(line, ch + (dir > 0 ? 1 : 0));
      if (!sawWord) sawWord = /\w/.test(next);
      ch += dir;
    }
  }

  function byExpr(cm, pos, dir) {
    var wrap;
    if (cm.findMatchingBracket && (wrap = cm.findMatchingBracket(pos, {strict: true}))
        && wrap.match && (wrap.forward ? 1 : -1) == dir)
      return dir > 0 ? Pos(wrap.to.line, wrap.to.ch + 1) : wrap.to;

    for (var first = true;; first = false) {
      var token = cm.getTokenAt(pos);
      var after = Pos(pos.line, dir < 0 ? token.start : token.end);
      if (first && dir > 0 && token.end == pos.ch || !/\w/.test(token.string)) {
        var newPos = cm.findPosH(after, dir, "char");
        if (posEq(after, newPos)) return pos;
        else pos = newPos;
      } else {
        return after;
      }
    }
  }

  // Prefixes (only crudely supported)

  function getPrefix(cm, precise) {
    var digits = cm.state.emacsPrefix;
    if (!digits) return precise ? null : 1;
    clearPrefix(cm);
    return digits == "-" ? -1 : Number(digits);
  }

  function repeated(cmd) {
    var f = typeof cmd == "string" ? function(cm) { cm.execCommand(cmd); } : cmd;
    return function(cm) {
      var prefix = getPrefix(cm);
      f(cm);
      for (var i = 1; i < prefix; ++i) f(cm);
    };
  }

  function findEnd(cm, pos, by, dir) {
    var prefix = getPrefix(cm);
    if (prefix < 0) { dir = -dir; prefix = -prefix; }
    for (var i = 0; i < prefix; ++i) {
      var newPos = by(cm, pos, dir);
      if (posEq(newPos, pos)) break;
      pos = newPos;
    }
    return pos;
  }

  function move(by, dir) {
    var f = function(cm) {
      cm.extendSelection(findEnd(cm, cm.getCursor(), by, dir));
    };
    f.motion = true;
    return f;
  }

  function killTo(cm, by, dir, ring) {
    var selections = cm.listSelections(), cursor;
    var i = selections.length;
    while (i--) {
      cursor = selections[i].head;
      kill(cm, cursor, findEnd(cm, cursor, by, dir), ring);
    }
  }

  function killRegion(cm, ring) {
    if (cm.somethingSelected()) {
      var selections = cm.listSelections(), selection;
      var i = selections.length;
      while (i--) {
        selection = selections[i];
        kill(cm, selection.anchor, selection.head, ring);
      }
      return true;
    }
  }

  function addPrefix(cm, digit) {
    if (cm.state.emacsPrefix) {
      if (digit != "-") cm.state.emacsPrefix += digit;
      return;
    }
    // Not active yet
    cm.state.emacsPrefix = digit;
    cm.on("keyHandled", maybeClearPrefix);
    cm.on("inputRead", maybeDuplicateInput);
  }

  var prefixPreservingKeys = {"Alt-G": true, "Ctrl-X": true, "Ctrl-Q": true, "Ctrl-U": true};

  function maybeClearPrefix(cm, arg) {
    if (!cm.state.emacsPrefixMap && !prefixPreservingKeys.hasOwnProperty(arg))
      clearPrefix(cm);
  }

  function clearPrefix(cm) {
    cm.state.emacsPrefix = null;
    cm.off("keyHandled", maybeClearPrefix);
    cm.off("inputRead", maybeDuplicateInput);
  }

  function maybeDuplicateInput(cm, event) {
    var dup = getPrefix(cm);
    if (dup > 1 && event.origin == "+input") {
      var one = event.text.join("\n"), txt = "";
      for (var i = 1; i < dup; ++i) txt += one;
      cm.replaceSelection(txt);
    }
  }

  function addPrefixMap(cm) {
    cm.state.emacsPrefixMap = true;
    cm.addKeyMap(prefixMap);
    cm.on("keyHandled", maybeRemovePrefixMap);
    cm.on("inputRead", maybeRemovePrefixMap);
  }

  function maybeRemovePrefixMap(cm, arg) {
    if (typeof arg == "string" && (/^\d$/.test(arg) || arg == "Ctrl-U")) return;
    cm.removeKeyMap(prefixMap);
    cm.state.emacsPrefixMap = false;
    cm.off("keyHandled", maybeRemovePrefixMap);
    cm.off("inputRead", maybeRemovePrefixMap);
  }

  // Utilities

  function setMark(cm) {
    cm.setCursor(cm.getCursor());
    cm.setExtending(!cm.getExtending());
    cm.on("change", function() { cm.setExtending(false); });
  }

  function clearMark(cm) {
    cm.setExtending(false);
    cm.setCursor(cm.getCursor());
  }

  function getInput(cm, msg, f) {
    if (cm.openDialog)
      cm.openDialog(msg + ": <input type=\"text\" style=\"width: 10em\"/>", f, {bottom: true});
    else
      f(prompt(msg, ""));
  }

  function operateOnWord(cm, op) {
    var start = cm.getCursor(), end = cm.findPosH(start, 1, "word");
    cm.replaceRange(op(cm.getRange(start, end)), start, end);
    cm.setCursor(end);
  }

  function toEnclosingExpr(cm) {
    var pos = cm.getCursor(), line = pos.line, ch = pos.ch;
    var stack = [];
    while (line >= cm.firstLine()) {
      var text = cm.getLine(line);
      for (var i = ch == null ? text.length : ch; i > 0;) {
        var ch = text.charAt(--i);
        if (ch == ")")
          stack.push("(");
        else if (ch == "]")
          stack.push("[");
        else if (ch == "}")
          stack.push("{");
        else if (/[\(\{\[]/.test(ch) && (!stack.length || stack.pop() != ch))
          return cm.extendSelection(Pos(line, i));
      }
      --line; ch = null;
    }
  }

  function quit(cm) {
    cm.execCommand("clearSearch");
    clearMark(cm);
  }

  CodeMirror.emacs = {kill: kill, killRegion: killRegion, repeated: repeated};

  // Actual keymap

  var keyMap = CodeMirror.keyMap.emacs = CodeMirror.normalizeKeyMap({
    "Ctrl-W": function(cm) {kill(cm, cm.getCursor("start"), cm.getCursor("end"), true);},
    "Ctrl-K": repeated(function(cm) {
      var start = cm.getCursor(), end = cm.clipPos(Pos(start.line));
      var text = cm.getRange(start, end);
      if (!/\S/.test(text)) {
        text += "\n";
        end = Pos(start.line + 1, 0);
      }
      kill(cm, start, end, "grow", text);
    }),
    "Alt-W": function(cm) {
      addToRing(cm.getSelection());
      clearMark(cm);
    },
    "Ctrl-Y": function(cm) {
      var start = cm.getCursor();
      cm.replaceRange(getFromRing(getPrefix(cm)), start, start, "paste");
      cm.setSelection(start, cm.getCursor());
    },
    "Alt-Y": function(cm) {cm.replaceSelection(popFromRing(), "around", "paste");},

    "Ctrl-Space": setMark, "Ctrl-Shift-2": setMark,

    "Ctrl-F": move(byChar, 1), "Ctrl-B": move(byChar, -1),
    "Right": move(byChar, 1), "Left": move(byChar, -1),
    "Ctrl-D": function(cm) { killTo(cm, byChar, 1, false); },
    "Delete": function(cm) { killRegion(cm, false) || killTo(cm, byChar, 1, false); },
    "Ctrl-H": function(cm) { killTo(cm, byChar, -1, false); },
    "Backspace": function(cm) { killRegion(cm, false) || killTo(cm, byChar, -1, false); },

    "Alt-F": move(byWord, 1), "Alt-B": move(byWord, -1),
    "Alt-Right": move(byWord, 1), "Alt-Left": move(byWord, -1),
    "Alt-D": function(cm) { killTo(cm, byWord, 1, "grow"); },
    "Alt-Backspace": function(cm) { killTo(cm, byWord, -1, "grow"); },

    "Ctrl-N": move(byLine, 1), "Ctrl-P": move(byLine, -1),
    "Down": move(byLine, 1), "Up": move(byLine, -1),
    "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
    "End": "goLineEnd", "Home": "goLineStart",

    "Alt-V": move(byPage, -1), "Ctrl-V": move(byPage, 1),
    "PageUp": move(byPage, -1), "PageDown": move(byPage, 1),

    "Ctrl-Up": move(byParagraph, -1), "Ctrl-Down": move(byParagraph, 1),

    "Alt-A": move(bySentence, -1), "Alt-E": move(bySentence, 1),
    "Alt-K": function(cm) { killTo(cm, bySentence, 1, "grow"); },

    "Ctrl-Alt-K": function(cm) { killTo(cm, byExpr, 1, "grow"); },
    "Ctrl-Alt-Backspace": function(cm) { killTo(cm, byExpr, -1, "grow"); },
    "Ctrl-Alt-F": move(byExpr, 1), "Ctrl-Alt-B": move(byExpr, -1, "grow"),

    "Shift-Ctrl-Alt-2": function(cm) {
      var cursor = cm.getCursor();
      cm.setSelection(findEnd(cm, cursor, byExpr, 1), cursor);
    },
    "Ctrl-Alt-T": function(cm) {
      var leftStart = byExpr(cm, cm.getCursor(), -1), leftEnd = byExpr(cm, leftStart, 1);
      var rightEnd = byExpr(cm, leftEnd, 1), rightStart = byExpr(cm, rightEnd, -1);
      cm.replaceRange(cm.getRange(rightStart, rightEnd) + cm.getRange(leftEnd, rightStart) +
                      cm.getRange(leftStart, leftEnd), leftStart, rightEnd);
    },
    "Ctrl-Alt-U": repeated(toEnclosingExpr),

    "Alt-Space": function(cm) {
      var pos = cm.getCursor(), from = pos.ch, to = pos.ch, text = cm.getLine(pos.line);
      while (from && /\s/.test(text.charAt(from - 1))) --from;
      while (to < text.length && /\s/.test(text.charAt(to))) ++to;
      cm.replaceRange(" ", Pos(pos.line, from), Pos(pos.line, to));
    },
    "Ctrl-O": repeated(function(cm) { cm.replaceSelection("\n", "start"); }),
    "Ctrl-T": repeated(function(cm) {
      cm.execCommand("transposeChars");
    }),

    "Alt-C": repeated(function(cm) {
      operateOnWord(cm, function(w) {
        var letter = w.search(/\w/);
        if (letter == -1) return w;
        return w.slice(0, letter) + w.charAt(letter).toUpperCase() + w.slice(letter + 1).toLowerCase();
      });
    }),
    "Alt-U": repeated(function(cm) {
      operateOnWord(cm, function(w) { return w.toUpperCase(); });
    }),
    "Alt-L": repeated(function(cm) {
      operateOnWord(cm, function(w) { return w.toLowerCase(); });
    }),

    "Alt-;": "toggleComment",

    "Ctrl-/": repeated("undo"), "Shift-Ctrl--": repeated("undo"),
    "Ctrl-Z": repeated("undo"), "Cmd-Z": repeated("undo"),
    "Shift-Alt-,": "goDocStart", "Shift-Alt-.": "goDocEnd",
    "Ctrl-S": "findPersistentNext", "Ctrl-R": "findPersistentPrev", "Ctrl-G": quit, "Shift-Alt-5": "replace",
    "Alt-/": "autocomplete",
    "Enter": "newlineAndIndent",
    "Ctrl-J": repeated(function(cm) { cm.replaceSelection("\n", "end"); }),
    "Tab": "indentAuto",

    "Alt-G G": function(cm) {
      var prefix = getPrefix(cm, true);
      if (prefix != null && prefix > 0) return cm.setCursor(prefix - 1);

      getInput(cm, "Goto line", function(str) {
        var num;
        if (str && !isNaN(num = Number(str)) && num == (num|0) && num > 0)
          cm.setCursor(num - 1);
      });
    },

    "Ctrl-X Tab": function(cm) {
      cm.indentSelection(getPrefix(cm, true) || cm.getOption("indentUnit"));
    },
    "Ctrl-X Ctrl-X": function(cm) {
      cm.setSelection(cm.getCursor("head"), cm.getCursor("anchor"));
    },
    "Ctrl-X Ctrl-S": "save",
    "Ctrl-X Ctrl-W": "save",
    "Ctrl-X S": "saveAll",
    "Ctrl-X F": "open",
    "Ctrl-X U": repeated("undo"),
    "Ctrl-X K": "close",
    "Ctrl-X Delete": function(cm) { kill(cm, cm.getCursor(), bySentence(cm, cm.getCursor(), 1), "grow"); },
    "Ctrl-X H": "selectAll",

    "Ctrl-Q Tab": repeated("insertTab"),
    "Ctrl-U": addPrefixMap
  });

  var prefixMap = {"Ctrl-G": clearPrefix};
  function regPrefix(d) {
    prefixMap[d] = function(cm) { addPrefix(cm, d); };
    keyMap["Ctrl-" + d] = function(cm) { addPrefix(cm, d); };
    prefixPreservingKeys["Ctrl-" + d] = true;
  }
  for (var i = 0; i < 10; ++i) regPrefix(String(i));
  regPrefix("-");
});
/* --------------------------------------------------------------
         js/libs/codemirror/keymap/sublime.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// A rough approximation of Sublime Text's keybindings
// Depends on addon/search/searchcursor.js and optionally addon/dialog/dialogs.js

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../lib/codemirror"), require("../addon/search/searchcursor"), require("../addon/edit/matchbrackets"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../lib/codemirror", "../addon/search/searchcursor", "../addon/edit/matchbrackets"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  var cmds = CodeMirror.commands;
  var Pos = CodeMirror.Pos;

  // This is not exactly Sublime's algorithm. I couldn't make heads or tails of that.
  function findPosSubword(doc, start, dir) {
    if (dir < 0 && start.ch == 0) return doc.clipPos(Pos(start.line - 1));
    var line = doc.getLine(start.line);
    if (dir > 0 && start.ch >= line.length) return doc.clipPos(Pos(start.line + 1, 0));
    var state = "start", type;
    for (var pos = start.ch, e = dir < 0 ? 0 : line.length, i = 0; pos != e; pos += dir, i++) {
      var next = line.charAt(dir < 0 ? pos - 1 : pos);
      var cat = next != "_" && CodeMirror.isWordChar(next) ? "w" : "o";
      if (cat == "w" && next.toUpperCase() == next) cat = "W";
      if (state == "start") {
        if (cat != "o") { state = "in"; type = cat; }
      } else if (state == "in") {
        if (type != cat) {
          if (type == "w" && cat == "W" && dir < 0) pos--;
          if (type == "W" && cat == "w" && dir > 0) { type = "w"; continue; }
          break;
        }
      }
    }
    return Pos(start.line, pos);
  }

  function moveSubword(cm, dir) {
    cm.extendSelectionsBy(function(range) {
      if (cm.display.shift || cm.doc.extend || range.empty())
        return findPosSubword(cm.doc, range.head, dir);
      else
        return dir < 0 ? range.from() : range.to();
    });
  }

  cmds.goSubwordLeft = function(cm) { moveSubword(cm, -1); };
  cmds.goSubwordRight = function(cm) { moveSubword(cm, 1); };

  cmds.scrollLineUp = function(cm) {
    var info = cm.getScrollInfo();
    if (!cm.somethingSelected()) {
      var visibleBottomLine = cm.lineAtHeight(info.top + info.clientHeight, "local");
      if (cm.getCursor().line >= visibleBottomLine)
        cm.execCommand("goLineUp");
    }
    cm.scrollTo(null, info.top - cm.defaultTextHeight());
  };
  cmds.scrollLineDown = function(cm) {
    var info = cm.getScrollInfo();
    if (!cm.somethingSelected()) {
      var visibleTopLine = cm.lineAtHeight(info.top, "local")+1;
      if (cm.getCursor().line <= visibleTopLine)
        cm.execCommand("goLineDown");
    }
    cm.scrollTo(null, info.top + cm.defaultTextHeight());
  };

  cmds.splitSelectionByLine = function(cm) {
    var ranges = cm.listSelections(), lineRanges = [];
    for (var i = 0; i < ranges.length; i++) {
      var from = ranges[i].from(), to = ranges[i].to();
      for (var line = from.line; line <= to.line; ++line)
        if (!(to.line > from.line && line == to.line && to.ch == 0))
          lineRanges.push({anchor: line == from.line ? from : Pos(line, 0),
                           head: line == to.line ? to : Pos(line)});
    }
    cm.setSelections(lineRanges, 0);
  };

  cmds.singleSelectionTop = function(cm) {
    var range = cm.listSelections()[0];
    cm.setSelection(range.anchor, range.head, {scroll: false});
  };

  cmds.selectLine = function(cm) {
    var ranges = cm.listSelections(), extended = [];
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i];
      extended.push({anchor: Pos(range.from().line, 0),
                     head: Pos(range.to().line + 1, 0)});
    }
    cm.setSelections(extended);
  };

  function insertLine(cm, above) {
    if (cm.isReadOnly()) return CodeMirror.Pass
    cm.operation(function() {
      var len = cm.listSelections().length, newSelection = [], last = -1;
      for (var i = 0; i < len; i++) {
        var head = cm.listSelections()[i].head;
        if (head.line <= last) continue;
        var at = Pos(head.line + (above ? 0 : 1), 0);
        cm.replaceRange("\n", at, null, "+insertLine");
        cm.indentLine(at.line, null, true);
        newSelection.push({head: at, anchor: at});
        last = head.line + 1;
      }
      cm.setSelections(newSelection);
    });
    cm.execCommand("indentAuto");
  }

  cmds.insertLineAfter = function(cm) { return insertLine(cm, false); };

  cmds.insertLineBefore = function(cm) { return insertLine(cm, true); };

  function wordAt(cm, pos) {
    var start = pos.ch, end = start, line = cm.getLine(pos.line);
    while (start && CodeMirror.isWordChar(line.charAt(start - 1))) --start;
    while (end < line.length && CodeMirror.isWordChar(line.charAt(end))) ++end;
    return {from: Pos(pos.line, start), to: Pos(pos.line, end), word: line.slice(start, end)};
  }

  cmds.selectNextOccurrence = function(cm) {
    var from = cm.getCursor("from"), to = cm.getCursor("to");
    var fullWord = cm.state.sublimeFindFullWord == cm.doc.sel;
    if (CodeMirror.cmpPos(from, to) == 0) {
      var word = wordAt(cm, from);
      if (!word.word) return;
      cm.setSelection(word.from, word.to);
      fullWord = true;
    } else {
      var text = cm.getRange(from, to);
      var query = fullWord ? new RegExp("\\b" + text + "\\b") : text;
      var cur = cm.getSearchCursor(query, to);
      var found = cur.findNext();
      if (!found) {
        cur = cm.getSearchCursor(query, Pos(cm.firstLine(), 0));
        found = cur.findNext();
      }
      if (!found || isSelectedRange(cm.listSelections(), cur.from(), cur.to()))
        return CodeMirror.Pass
      cm.addSelection(cur.from(), cur.to());
    }
    if (fullWord)
      cm.state.sublimeFindFullWord = cm.doc.sel;
  };

  function addCursorToSelection(cm, dir) {
    var ranges = cm.listSelections(), newRanges = [];
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i];
      var newAnchor = cm.findPosV(
          range.anchor, dir, "line", range.anchor.goalColumn);
      var newHead = cm.findPosV(
          range.head, dir, "line", range.head.goalColumn);
      newAnchor.goalColumn = range.anchor.goalColumn != null ?
          range.anchor.goalColumn : cm.cursorCoords(range.anchor, "div").left;
      newHead.goalColumn = range.head.goalColumn != null ?
          range.head.goalColumn : cm.cursorCoords(range.head, "div").left;
      var newRange = {anchor: newAnchor, head: newHead};
      newRanges.push(range);
      newRanges.push(newRange);
    }
    cm.setSelections(newRanges);
  }
  cmds.addCursorToPrevLine = function(cm) { addCursorToSelection(cm, -1); };
  cmds.addCursorToNextLine = function(cm) { addCursorToSelection(cm, 1); };

  function isSelectedRange(ranges, from, to) {
    for (var i = 0; i < ranges.length; i++)
      if (ranges[i].from() == from && ranges[i].to() == to) return true
    return false
  }

  var mirror = "(){}[]";
  function selectBetweenBrackets(cm) {
    var ranges = cm.listSelections(), newRanges = []
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i], pos = range.head, opening = cm.scanForBracket(pos, -1);
      if (!opening) return false;
      for (;;) {
        var closing = cm.scanForBracket(pos, 1);
        if (!closing) return false;
        if (closing.ch == mirror.charAt(mirror.indexOf(opening.ch) + 1)) {
          var startPos = Pos(opening.pos.line, opening.pos.ch + 1);
          if (CodeMirror.cmpPos(startPos, range.from()) == 0 &&
              CodeMirror.cmpPos(closing.pos, range.to()) == 0) {
            opening = cm.scanForBracket(opening.pos, -1);
            if (!opening) return false;
          } else {
            newRanges.push({anchor: startPos, head: closing.pos});
            break;
          }
        }
        pos = Pos(closing.pos.line, closing.pos.ch + 1);
      }
    }
    cm.setSelections(newRanges);
    return true;
  }

  cmds.selectScope = function(cm) {
    selectBetweenBrackets(cm) || cm.execCommand("selectAll");
  };
  cmds.selectBetweenBrackets = function(cm) {
    if (!selectBetweenBrackets(cm)) return CodeMirror.Pass;
  };

  cmds.goToBracket = function(cm) {
    cm.extendSelectionsBy(function(range) {
      var next = cm.scanForBracket(range.head, 1);
      if (next && CodeMirror.cmpPos(next.pos, range.head) != 0) return next.pos;
      var prev = cm.scanForBracket(range.head, -1);
      return prev && Pos(prev.pos.line, prev.pos.ch + 1) || range.head;
    });
  };

  cmds.swapLineUp = function(cm) {
    if (cm.isReadOnly()) return CodeMirror.Pass
    var ranges = cm.listSelections(), linesToMove = [], at = cm.firstLine() - 1, newSels = [];
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i], from = range.from().line - 1, to = range.to().line;
      newSels.push({anchor: Pos(range.anchor.line - 1, range.anchor.ch),
                    head: Pos(range.head.line - 1, range.head.ch)});
      if (range.to().ch == 0 && !range.empty()) --to;
      if (from > at) linesToMove.push(from, to);
      else if (linesToMove.length) linesToMove[linesToMove.length - 1] = to;
      at = to;
    }
    cm.operation(function() {
      for (var i = 0; i < linesToMove.length; i += 2) {
        var from = linesToMove[i], to = linesToMove[i + 1];
        var line = cm.getLine(from);
        cm.replaceRange("", Pos(from, 0), Pos(from + 1, 0), "+swapLine");
        if (to > cm.lastLine())
          cm.replaceRange("\n" + line, Pos(cm.lastLine()), null, "+swapLine");
        else
          cm.replaceRange(line + "\n", Pos(to, 0), null, "+swapLine");
      }
      cm.setSelections(newSels);
      cm.scrollIntoView();
    });
  };

  cmds.swapLineDown = function(cm) {
    if (cm.isReadOnly()) return CodeMirror.Pass
    var ranges = cm.listSelections(), linesToMove = [], at = cm.lastLine() + 1;
    for (var i = ranges.length - 1; i >= 0; i--) {
      var range = ranges[i], from = range.to().line + 1, to = range.from().line;
      if (range.to().ch == 0 && !range.empty()) from--;
      if (from < at) linesToMove.push(from, to);
      else if (linesToMove.length) linesToMove[linesToMove.length - 1] = to;
      at = to;
    }
    cm.operation(function() {
      for (var i = linesToMove.length - 2; i >= 0; i -= 2) {
        var from = linesToMove[i], to = linesToMove[i + 1];
        var line = cm.getLine(from);
        if (from == cm.lastLine())
          cm.replaceRange("", Pos(from - 1), Pos(from), "+swapLine");
        else
          cm.replaceRange("", Pos(from, 0), Pos(from + 1, 0), "+swapLine");
        cm.replaceRange(line + "\n", Pos(to, 0), null, "+swapLine");
      }
      cm.scrollIntoView();
    });
  };

  cmds.toggleCommentIndented = function(cm) {
    cm.toggleComment({ indent: true });
  }

  cmds.joinLines = function(cm) {
    var ranges = cm.listSelections(), joined = [];
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i], from = range.from();
      var start = from.line, end = range.to().line;
      while (i < ranges.length - 1 && ranges[i + 1].from().line == end)
        end = ranges[++i].to().line;
      joined.push({start: start, end: end, anchor: !range.empty() && from});
    }
    cm.operation(function() {
      var offset = 0, ranges = [];
      for (var i = 0; i < joined.length; i++) {
        var obj = joined[i];
        var anchor = obj.anchor && Pos(obj.anchor.line - offset, obj.anchor.ch), head;
        for (var line = obj.start; line <= obj.end; line++) {
          var actual = line - offset;
          if (line == obj.end) head = Pos(actual, cm.getLine(actual).length + 1);
          if (actual < cm.lastLine()) {
            cm.replaceRange(" ", Pos(actual), Pos(actual + 1, /^\s*/.exec(cm.getLine(actual + 1))[0].length));
            ++offset;
          }
        }
        ranges.push({anchor: anchor || head, head: head});
      }
      cm.setSelections(ranges, 0);
    });
  };

  cmds.duplicateLine = function(cm) {
    cm.operation(function() {
      var rangeCount = cm.listSelections().length;
      for (var i = 0; i < rangeCount; i++) {
        var range = cm.listSelections()[i];
        if (range.empty())
          cm.replaceRange(cm.getLine(range.head.line) + "\n", Pos(range.head.line, 0));
        else
          cm.replaceRange(cm.getRange(range.from(), range.to()), range.from());
      }
      cm.scrollIntoView();
    });
  };


  function sortLines(cm, caseSensitive) {
    if (cm.isReadOnly()) return CodeMirror.Pass
    var ranges = cm.listSelections(), toSort = [], selected;
    for (var i = 0; i < ranges.length; i++) {
      var range = ranges[i];
      if (range.empty()) continue;
      var from = range.from().line, to = range.to().line;
      while (i < ranges.length - 1 && ranges[i + 1].from().line == to)
        to = ranges[++i].to().line;
      if (!ranges[i].to().ch) to--;
      toSort.push(from, to);
    }
    if (toSort.length) selected = true;
    else toSort.push(cm.firstLine(), cm.lastLine());

    cm.operation(function() {
      var ranges = [];
      for (var i = 0; i < toSort.length; i += 2) {
        var from = toSort[i], to = toSort[i + 1];
        var start = Pos(from, 0), end = Pos(to);
        var lines = cm.getRange(start, end, false);
        if (caseSensitive)
          lines.sort();
        else
          lines.sort(function(a, b) {
            var au = a.toUpperCase(), bu = b.toUpperCase();
            if (au != bu) { a = au; b = bu; }
            return a < b ? -1 : a == b ? 0 : 1;
          });
        cm.replaceRange(lines, start, end);
        if (selected) ranges.push({anchor: start, head: Pos(to + 1, 0)});
      }
      if (selected) cm.setSelections(ranges, 0);
    });
  }

  cmds.sortLines = function(cm) { sortLines(cm, true); };
  cmds.sortLinesInsensitive = function(cm) { sortLines(cm, false); };

  cmds.nextBookmark = function(cm) {
    var marks = cm.state.sublimeBookmarks;
    if (marks) while (marks.length) {
      var current = marks.shift();
      var found = current.find();
      if (found) {
        marks.push(current);
        return cm.setSelection(found.from, found.to);
      }
    }
  };

  cmds.prevBookmark = function(cm) {
    var marks = cm.state.sublimeBookmarks;
    if (marks) while (marks.length) {
      marks.unshift(marks.pop());
      var found = marks[marks.length - 1].find();
      if (!found)
        marks.pop();
      else
        return cm.setSelection(found.from, found.to);
    }
  };

  cmds.toggleBookmark = function(cm) {
    var ranges = cm.listSelections();
    var marks = cm.state.sublimeBookmarks || (cm.state.sublimeBookmarks = []);
    for (var i = 0; i < ranges.length; i++) {
      var from = ranges[i].from(), to = ranges[i].to();
      var found = ranges[i].empty() ? cm.findMarksAt(from) : cm.findMarks(from, to);
      for (var j = 0; j < found.length; j++) {
        if (found[j].sublimeBookmark) {
          found[j].clear();
          for (var k = 0; k < marks.length; k++)
            if (marks[k] == found[j])
              marks.splice(k--, 1);
          break;
        }
      }
      if (j == found.length)
        marks.push(cm.markText(from, to, {sublimeBookmark: true, clearWhenEmpty: false}));
    }
  };

  cmds.clearBookmarks = function(cm) {
    var marks = cm.state.sublimeBookmarks;
    if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear();
    marks.length = 0;
  };

  cmds.selectBookmarks = function(cm) {
    var marks = cm.state.sublimeBookmarks, ranges = [];
    if (marks) for (var i = 0; i < marks.length; i++) {
      var found = marks[i].find();
      if (!found)
        marks.splice(i--, 0);
      else
        ranges.push({anchor: found.from, head: found.to});
    }
    if (ranges.length)
      cm.setSelections(ranges, 0);
  };

  function modifyWordOrSelection(cm, mod) {
    cm.operation(function() {
      var ranges = cm.listSelections(), indices = [], replacements = [];
      for (var i = 0; i < ranges.length; i++) {
        var range = ranges[i];
        if (range.empty()) { indices.push(i); replacements.push(""); }
        else replacements.push(mod(cm.getRange(range.from(), range.to())));
      }
      cm.replaceSelections(replacements, "around", "case");
      for (var i = indices.length - 1, at; i >= 0; i--) {
        var range = ranges[indices[i]];
        if (at && CodeMirror.cmpPos(range.head, at) > 0) continue;
        var word = wordAt(cm, range.head);
        at = word.from;
        cm.replaceRange(mod(word.word), word.from, word.to);
      }
    });
  }

  cmds.smartBackspace = function(cm) {
    if (cm.somethingSelected()) return CodeMirror.Pass;

    cm.operation(function() {
      var cursors = cm.listSelections();
      var indentUnit = cm.getOption("indentUnit");

      for (var i = cursors.length - 1; i >= 0; i--) {
        var cursor = cursors[i].head;
        var toStartOfLine = cm.getRange({line: cursor.line, ch: 0}, cursor);
        var column = CodeMirror.countColumn(toStartOfLine, null, cm.getOption("tabSize"));

        // Delete by one character by default
        var deletePos = cm.findPosH(cursor, -1, "char", false);

        if (toStartOfLine && !/\S/.test(toStartOfLine) && column % indentUnit == 0) {
          var prevIndent = new Pos(cursor.line,
            CodeMirror.findColumn(toStartOfLine, column - indentUnit, indentUnit));

          // Smart delete only if we found a valid prevIndent location
          if (prevIndent.ch != cursor.ch) deletePos = prevIndent;
        }

        cm.replaceRange("", deletePos, cursor, "+delete");
      }
    });
  };

  cmds.delLineRight = function(cm) {
    cm.operation(function() {
      var ranges = cm.listSelections();
      for (var i = ranges.length - 1; i >= 0; i--)
        cm.replaceRange("", ranges[i].anchor, Pos(ranges[i].to().line), "+delete");
      cm.scrollIntoView();
    });
  };

  cmds.upcaseAtCursor = function(cm) {
    modifyWordOrSelection(cm, function(str) { return str.toUpperCase(); });
  };
  cmds.downcaseAtCursor = function(cm) {
    modifyWordOrSelection(cm, function(str) { return str.toLowerCase(); });
  };

  cmds.setSublimeMark = function(cm) {
    if (cm.state.sublimeMark) cm.state.sublimeMark.clear();
    cm.state.sublimeMark = cm.setBookmark(cm.getCursor());
  };
  cmds.selectToSublimeMark = function(cm) {
    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
    if (found) cm.setSelection(cm.getCursor(), found);
  };
  cmds.deleteToSublimeMark = function(cm) {
    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
    if (found) {
      var from = cm.getCursor(), to = found;
      if (CodeMirror.cmpPos(from, to) > 0) { var tmp = to; to = from; from = tmp; }
      cm.state.sublimeKilled = cm.getRange(from, to);
      cm.replaceRange("", from, to);
    }
  };
  cmds.swapWithSublimeMark = function(cm) {
    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();
    if (found) {
      cm.state.sublimeMark.clear();
      cm.state.sublimeMark = cm.setBookmark(cm.getCursor());
      cm.setCursor(found);
    }
  };
  cmds.sublimeYank = function(cm) {
    if (cm.state.sublimeKilled != null)
      cm.replaceSelection(cm.state.sublimeKilled, null, "paste");
  };

  cmds.showInCenter = function(cm) {
    var pos = cm.cursorCoords(null, "local");
    cm.scrollTo(null, (pos.top + pos.bottom) / 2 - cm.getScrollInfo().clientHeight / 2);
  };

  function getTarget(cm) {
    var from = cm.getCursor("from"), to = cm.getCursor("to");
    if (CodeMirror.cmpPos(from, to) == 0) {
      var word = wordAt(cm, from);
      if (!word.word) return;
      from = word.from;
      to = word.to;
    }
    return {from: from, to: to, query: cm.getRange(from, to), word: word};
  }

  function findAndGoTo(cm, forward) {
    var target = getTarget(cm);
    if (!target) return;
    var query = target.query;
    var cur = cm.getSearchCursor(query, forward ? target.to : target.from);

    if (forward ? cur.findNext() : cur.findPrevious()) {
      cm.setSelection(cur.from(), cur.to());
    } else {
      cur = cm.getSearchCursor(query, forward ? Pos(cm.firstLine(), 0)
                                              : cm.clipPos(Pos(cm.lastLine())));
      if (forward ? cur.findNext() : cur.findPrevious())
        cm.setSelection(cur.from(), cur.to());
      else if (target.word)
        cm.setSelection(target.from, target.to);
    }
  };
  cmds.findUnder = function(cm) { findAndGoTo(cm, true); };
  cmds.findUnderPrevious = function(cm) { findAndGoTo(cm,false); };
  cmds.findAllUnder = function(cm) {
    var target = getTarget(cm);
    if (!target) return;
    var cur = cm.getSearchCursor(target.query);
    var matches = [];
    var primaryIndex = -1;
    while (cur.findNext()) {
      matches.push({anchor: cur.from(), head: cur.to()});
      if (cur.from().line <= target.from.line && cur.from().ch <= target.from.ch)
        primaryIndex++;
    }
    cm.setSelections(matches, primaryIndex);
  };


  var keyMap = CodeMirror.keyMap;
  keyMap.macSublime = {
    "Cmd-Left": "goLineStartSmart",
    "Shift-Tab": "indentLess",
    "Shift-Ctrl-K": "deleteLine",
    "Alt-Q": "wrapLines",
    "Ctrl-Left": "goSubwordLeft",
    "Ctrl-Right": "goSubwordRight",
    "Ctrl-Alt-Up": "scrollLineUp",
    "Ctrl-Alt-Down": "scrollLineDown",
    "Cmd-L": "selectLine",
    "Shift-Cmd-L": "splitSelectionByLine",
    "Esc": "singleSelectionTop",
    "Cmd-Enter": "insertLineAfter",
    "Shift-Cmd-Enter": "insertLineBefore",
    "Cmd-D": "selectNextOccurrence",
    "Shift-Cmd-Space": "selectScope",
    "Shift-Cmd-M": "selectBetweenBrackets",
    "Cmd-M": "goToBracket",
    "Cmd-Ctrl-Up": "swapLineUp",
    "Cmd-Ctrl-Down": "swapLineDown",
    "Cmd-/": "toggleCommentIndented",
    "Cmd-J": "joinLines",
    "Shift-Cmd-D": "duplicateLine",
    "F5": "sortLines",
    "Cmd-F5": "sortLinesInsensitive",
    "F2": "nextBookmark",
    "Shift-F2": "prevBookmark",
    "Cmd-F2": "toggleBookmark",
    "Shift-Cmd-F2": "clearBookmarks",
    "Alt-F2": "selectBookmarks",
    "Backspace": "smartBackspace",
    "Cmd-K Cmd-K": "delLineRight",
    "Cmd-K Cmd-U": "upcaseAtCursor",
    "Cmd-K Cmd-L": "downcaseAtCursor",
    "Cmd-K Cmd-Space": "setSublimeMark",
    "Cmd-K Cmd-A": "selectToSublimeMark",
    "Cmd-K Cmd-W": "deleteToSublimeMark",
    "Cmd-K Cmd-X": "swapWithSublimeMark",
    "Cmd-K Cmd-Y": "sublimeYank",
    "Cmd-K Cmd-C": "showInCenter",
    "Cmd-K Cmd-G": "clearBookmarks",
    "Cmd-K Cmd-Backspace": "delLineLeft",
    "Cmd-K Cmd-0": "unfoldAll",
    "Cmd-K Cmd-J": "unfoldAll",
    "Ctrl-Shift-Up": "addCursorToPrevLine",
    "Ctrl-Shift-Down": "addCursorToNextLine",
    "Cmd-F3": "findUnder",
    "Shift-Cmd-F3": "findUnderPrevious",
    "Alt-F3": "findAllUnder",
    "Shift-Cmd-[": "fold",
    "Shift-Cmd-]": "unfold",
    "Cmd-I": "findIncremental",
    "Shift-Cmd-I": "findIncrementalReverse",
    "Cmd-H": "replace",
    "F3": "findNext",
    "Shift-F3": "findPrev",
    "fallthrough": "macDefault"
  };
  CodeMirror.normalizeKeyMap(keyMap.macSublime);

  keyMap.pcSublime = {
    "Shift-Tab": "indentLess",
    "Shift-Ctrl-K": "deleteLine",
    "Alt-Q": "wrapLines",
    "Ctrl-T": "transposeChars",
    "Alt-Left": "goSubwordLeft",
    "Alt-Right": "goSubwordRight",
    "Ctrl-Up": "scrollLineUp",
    "Ctrl-Down": "scrollLineDown",
    "Ctrl-L": "selectLine",
    "Shift-Ctrl-L": "splitSelectionByLine",
    "Esc": "singleSelectionTop",
    "Ctrl-Enter": "insertLineAfter",
    "Shift-Ctrl-Enter": "insertLineBefore",
    "Ctrl-D": "selectNextOccurrence",
    "Shift-Ctrl-Space": "selectScope",
    "Shift-Ctrl-M": "selectBetweenBrackets",
    "Ctrl-M": "goToBracket",
    "Shift-Ctrl-Up": "swapLineUp",
    "Shift-Ctrl-Down": "swapLineDown",
    "Ctrl-/": "toggleCommentIndented",
    "Ctrl-J": "joinLines",
    "Shift-Ctrl-D": "duplicateLine",
    "F9": "sortLines",
    "Ctrl-F9": "sortLinesInsensitive",
    "F2": "nextBookmark",
    "Shift-F2": "prevBookmark",
    "Ctrl-F2": "toggleBookmark",
    "Shift-Ctrl-F2": "clearBookmarks",
    "Alt-F2": "selectBookmarks",
    "Backspace": "smartBackspace",
    "Ctrl-K Ctrl-K": "delLineRight",
    "Ctrl-K Ctrl-U": "upcaseAtCursor",
    "Ctrl-K Ctrl-L": "downcaseAtCursor",
    "Ctrl-K Ctrl-Space": "setSublimeMark",
    "Ctrl-K Ctrl-A": "selectToSublimeMark",
    "Ctrl-K Ctrl-W": "deleteToSublimeMark",
    "Ctrl-K Ctrl-X": "swapWithSublimeMark",
    "Ctrl-K Ctrl-Y": "sublimeYank",
    "Ctrl-K Ctrl-C": "showInCenter",
    "Ctrl-K Ctrl-G": "clearBookmarks",
    "Ctrl-K Ctrl-Backspace": "delLineLeft",
    "Ctrl-K Ctrl-0": "unfoldAll",
    "Ctrl-K Ctrl-J": "unfoldAll",
    "Ctrl-Alt-Up": "addCursorToPrevLine",
    "Ctrl-Alt-Down": "addCursorToNextLine",
    "Ctrl-F3": "findUnder",
    "Shift-Ctrl-F3": "findUnderPrevious",
    "Alt-F3": "findAllUnder",
    "Shift-Ctrl-[": "fold",
    "Shift-Ctrl-]": "unfold",
    "Ctrl-I": "findIncremental",
    "Shift-Ctrl-I": "findIncrementalReverse",
    "Ctrl-H": "replace",
    "F3": "findNext",
    "Shift-F3": "findPrev",
    "fallthrough": "pcDefault"
  };
  CodeMirror.normalizeKeyMap(keyMap.pcSublime);

  var mac = keyMap.default == keyMap.macDefault;
  keyMap.sublime = mac ? keyMap.macSublime : keyMap.pcSublime;
});
/* --------------------------------------------------------------
         js/libs/codemirror/keymap/vim.js
   -------------------------------------------------------------- */
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

/**
 * Supported keybindings:
 *   Too many to list. Refer to defaultKeymap below.
 *
 * Supported Ex commands:
 *   Refer to defaultExCommandMap below.
 *
 * Registers: unnamed, -, a-z, A-Z, 0-9
 *   (Does not respect the special case for number registers when delete
 *    operator is made with these commands: %, (, ),  , /, ?, n, N, {, } )
 *   TODO: Implement the remaining registers.
 *
 * Marks: a-z, A-Z, and 0-9
 *   TODO: Implement the remaining special marks. They have more complex
 *       behavior.
 *
 * Events:
 *  'vim-mode-change' - raised on the editor anytime the current mode changes,
 *                      Event object: {mode: "visual", subMode: "linewise"}
 *
 * Code structure:
 *  1. Default keymap
 *  2. Variable declarations and short basic helpers
 *  3. Instance (External API) implementation
 *  4. Internal state tracking objects (input state, counter) implementation
 *     and instantiation
 *  5. Key handler (the main command dispatcher) implementation
 *  6. Motion, operator, and action implementations
 *  7. Helper functions for the key handler, motions, operators, and actions
 *  8. Set up Vim to work as a keymap for CodeMirror.
 *  9. Ex command implementations.
 */

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../lib/codemirror"), require("../addon/search/searchcursor"), require("../addon/dialog/dialog"), require("../addon/edit/matchbrackets.js"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../lib/codemirror", "../addon/search/searchcursor", "../addon/dialog/dialog", "../addon/edit/matchbrackets"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  'use strict';

  var defaultKeymap = [
    // Key to key mapping. This goes first to make it possible to override
    // existing mappings.
    { keys: '<Left>', type: 'keyToKey', toKeys: 'h' },
    { keys: '<Right>', type: 'keyToKey', toKeys: 'l' },
    { keys: '<Up>', type: 'keyToKey', toKeys: 'k' },
    { keys: '<Down>', type: 'keyToKey', toKeys: 'j' },
    { keys: '<Space>', type: 'keyToKey', toKeys: 'l' },
    { keys: '<BS>', type: 'keyToKey', toKeys: 'h', context: 'normal'},
    { keys: '<Del>', type: 'keyToKey', toKeys: 'x', context: 'normal'},
    { keys: '<C-Space>', type: 'keyToKey', toKeys: 'W' },
    { keys: '<C-BS>', type: 'keyToKey', toKeys: 'B', context: 'normal' },
    { keys: '<S-Space>', type: 'keyToKey', toKeys: 'w' },
    { keys: '<S-BS>', type: 'keyToKey', toKeys: 'b', context: 'normal' },
    { keys: '<C-n>', type: 'keyToKey', toKeys: 'j' },
    { keys: '<C-p>', type: 'keyToKey', toKeys: 'k' },
    { keys: '<C-[>', type: 'keyToKey', toKeys: '<Esc>' },
    { keys: '<C-c>', type: 'keyToKey', toKeys: '<Esc>' },
    { keys: '<C-[>', type: 'keyToKey', toKeys: '<Esc>', context: 'insert' },
    { keys: '<C-c>', type: 'keyToKey', toKeys: '<Esc>', context: 'insert' },
    { keys: 's', type: 'keyToKey', toKeys: 'cl', context: 'normal' },
    { keys: 's', type: 'keyToKey', toKeys: 'c', context: 'visual'},
    { keys: 'S', type: 'keyToKey', toKeys: 'cc', context: 'normal' },
    { keys: 'S', type: 'keyToKey', toKeys: 'VdO', context: 'visual' },
    { keys: '<Home>', type: 'keyToKey', toKeys: '0' },
    { keys: '<End>', type: 'keyToKey', toKeys: '$' },
    { keys: '<PageUp>', type: 'keyToKey', toKeys: '<C-b>' },
    { keys: '<PageDown>', type: 'keyToKey', toKeys: '<C-f>' },
    { keys: '<CR>', type: 'keyToKey', toKeys: 'j^', context: 'normal' },
    { keys: '<Ins>', type: 'action', action: 'toggleOverwrite', context: 'insert' },
    // Motions
    { keys: 'H', type: 'motion', motion: 'moveToTopLine', motionArgs: { linewise: true, toJumplist: true }},
    { keys: 'M', type: 'motion', motion: 'moveToMiddleLine', motionArgs: { linewise: true, toJumplist: true }},
    { keys: 'L', type: 'motion', motion: 'moveToBottomLine', motionArgs: { linewise: true, toJumplist: true }},
    { keys: 'h', type: 'motion', motion: 'moveByCharacters', motionArgs: { forward: false }},
    { keys: 'l', type: 'motion', motion: 'moveByCharacters', motionArgs: { forward: true }},
    { keys: 'j', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, linewise: true }},
    { keys: 'k', type: 'motion', motion: 'moveByLines', motionArgs: { forward: false, linewise: true }},
    { keys: 'gj', type: 'motion', motion: 'moveByDisplayLines', motionArgs: { forward: true }},
    { keys: 'gk', type: 'motion', motion: 'moveByDisplayLines', motionArgs: { forward: false }},
    { keys: 'w', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: false }},
    { keys: 'W', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: false, bigWord: true }},
    { keys: 'e', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: true, inclusive: true }},
    { keys: 'E', type: 'motion', motion: 'moveByWords', motionArgs: { forward: true, wordEnd: true, bigWord: true, inclusive: true }},
    { keys: 'b', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false }},
    { keys: 'B', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false, bigWord: true }},
    { keys: 'ge', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: true, inclusive: true }},
    { keys: 'gE', type: 'motion', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: true, bigWord: true, inclusive: true }},
    { keys: '{', type: 'motion', motion: 'moveByParagraph', motionArgs: { forward: false, toJumplist: true }},
    { keys: '}', type: 'motion', motion: 'moveByParagraph', motionArgs: { forward: true, toJumplist: true }},
    { keys: '(', type: 'motion', motion: 'moveBySentence', motionArgs: { forward: false }},
    { keys: ')', type: 'motion', motion: 'moveBySentence', motionArgs: { forward: true }},
    { keys: '<C-f>', type: 'motion', motion: 'moveByPage', motionArgs: { forward: true }},
    { keys: '<C-b>', type: 'motion', motion: 'moveByPage', motionArgs: { forward: false }},
    { keys: '<C-d>', type: 'motion', motion: 'moveByScroll', motionArgs: { forward: true, explicitRepeat: true }},
    { keys: '<C-u>', type: 'motion', motion: 'moveByScroll', motionArgs: { forward: false, explicitRepeat: true }},
    { keys: 'gg', type: 'motion', motion: 'moveToLineOrEdgeOfDocument', motionArgs: { forward: false, explicitRepeat: true, linewise: true, toJumplist: true }},
    { keys: 'G', type: 'motion', motion: 'moveToLineOrEdgeOfDocument', motionArgs: { forward: true, explicitRepeat: true, linewise: true, toJumplist: true }},
    { keys: '0', type: 'motion', motion: 'moveToStartOfLine' },
    { keys: '^', type: 'motion', motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: '+', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, toFirstChar:true }},
    { keys: '-', type: 'motion', motion: 'moveByLines', motionArgs: { forward: false, toFirstChar:true }},
    { keys: '_', type: 'motion', motion: 'moveByLines', motionArgs: { forward: true, toFirstChar:true, repeatOffset:-1 }},
    { keys: '$', type: 'motion', motion: 'moveToEol', motionArgs: { inclusive: true }},
    { keys: '%', type: 'motion', motion: 'moveToMatchedSymbol', motionArgs: { inclusive: true, toJumplist: true }},
    { keys: 'f<character>', type: 'motion', motion: 'moveToCharacter', motionArgs: { forward: true , inclusive: true }},
    { keys: 'F<character>', type: 'motion', motion: 'moveToCharacter', motionArgs: { forward: false }},
    { keys: 't<character>', type: 'motion', motion: 'moveTillCharacter', motionArgs: { forward: true, inclusive: true }},
    { keys: 'T<character>', type: 'motion', motion: 'moveTillCharacter', motionArgs: { forward: false }},
    { keys: ';', type: 'motion', motion: 'repeatLastCharacterSearch', motionArgs: { forward: true }},
    { keys: ',', type: 'motion', motion: 'repeatLastCharacterSearch', motionArgs: { forward: false }},
    { keys: '\'<character>', type: 'motion', motion: 'goToMark', motionArgs: {toJumplist: true, linewise: true}},
    { keys: '`<character>', type: 'motion', motion: 'goToMark', motionArgs: {toJumplist: true}},
    { keys: ']`', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true } },
    { keys: '[`', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false } },
    { keys: ']\'', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true, linewise: true } },
    { keys: '[\'', type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false, linewise: true } },
    // the next two aren't motions but must come before more general motion declarations
    { keys: ']p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true, matchIndent: true}},
    { keys: '[p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true, matchIndent: true}},
    { keys: ']<character>', type: 'motion', motion: 'moveToSymbol', motionArgs: { forward: true, toJumplist: true}},
    { keys: '[<character>', type: 'motion', motion: 'moveToSymbol', motionArgs: { forward: false, toJumplist: true}},
    { keys: '|', type: 'motion', motion: 'moveToColumn'},
    { keys: 'o', type: 'motion', motion: 'moveToOtherHighlightedEnd', context:'visual'},
    { keys: 'O', type: 'motion', motion: 'moveToOtherHighlightedEnd', motionArgs: {sameLine: true}, context:'visual'},
    // Operators
    { keys: 'd', type: 'operator', operator: 'delete' },
    { keys: 'y', type: 'operator', operator: 'yank' },
    { keys: 'c', type: 'operator', operator: 'change' },
    { keys: '=', type: 'operator', operator: 'indentAuto' },
    { keys: '>', type: 'operator', operator: 'indent', operatorArgs: { indentRight: true }},
    { keys: '<', type: 'operator', operator: 'indent', operatorArgs: { indentRight: false }},
    { keys: 'g~', type: 'operator', operator: 'changeCase' },
    { keys: 'gu', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, isEdit: true },
    { keys: 'gU', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, isEdit: true },
    { keys: 'n', type: 'motion', motion: 'findNext', motionArgs: { forward: true, toJumplist: true }},
    { keys: 'N', type: 'motion', motion: 'findNext', motionArgs: { forward: false, toJumplist: true }},
    // Operator-Motion dual commands
    { keys: 'x', type: 'operatorMotion', operator: 'delete', motion: 'moveByCharacters', motionArgs: { forward: true }, operatorMotionArgs: { visualLine: false }},
    { keys: 'X', type: 'operatorMotion', operator: 'delete', motion: 'moveByCharacters', motionArgs: { forward: false }, operatorMotionArgs: { visualLine: true }},
    { keys: 'D', type: 'operatorMotion', operator: 'delete', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
    { keys: 'D', type: 'operator', operator: 'delete', operatorArgs: { linewise: true }, context: 'visual'},
    { keys: 'Y', type: 'operatorMotion', operator: 'yank', motion: 'expandToLine', motionArgs: { linewise: true }, context: 'normal'},
    { keys: 'Y', type: 'operator', operator: 'yank', operatorArgs: { linewise: true }, context: 'visual'},
    { keys: 'C', type: 'operatorMotion', operator: 'change', motion: 'moveToEol', motionArgs: { inclusive: true }, context: 'normal'},
    { keys: 'C', type: 'operator', operator: 'change', operatorArgs: { linewise: true }, context: 'visual'},
    { keys: '~', type: 'operatorMotion', operator: 'changeCase', motion: 'moveByCharacters', motionArgs: { forward: true }, operatorArgs: { shouldMoveCursor: true }, context: 'normal'},
    { keys: '~', type: 'operator', operator: 'changeCase', context: 'visual'},
    { keys: '<C-w>', type: 'operatorMotion', operator: 'delete', motion: 'moveByWords', motionArgs: { forward: false, wordEnd: false }, context: 'insert' },
    //ignore C-w in normal mode
    { keys: '<C-w>', type: 'idle', context: 'normal' },
    // Actions
    { keys: '<C-i>', type: 'action', action: 'jumpListWalk', actionArgs: { forward: true }},
    { keys: '<C-o>', type: 'action', action: 'jumpListWalk', actionArgs: { forward: false }},
    { keys: '<C-e>', type: 'action', action: 'scroll', actionArgs: { forward: true, linewise: true }},
    { keys: '<C-y>', type: 'action', action: 'scroll', actionArgs: { forward: false, linewise: true }},
    { keys: 'a', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'charAfter' }, context: 'normal' },
    { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'eol' }, context: 'normal' },
    { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'endOfSelectedArea' }, context: 'visual' },
    { keys: 'i', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'inplace' }, context: 'normal' },
    { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'firstNonBlank'}, context: 'normal' },
    { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'startOfSelectedArea' }, context: 'visual' },
    { keys: 'o', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: true }, context: 'normal' },
    { keys: 'O', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: false }, context: 'normal' },
    { keys: 'v', type: 'action', action: 'toggleVisualMode' },
    { keys: 'V', type: 'action', action: 'toggleVisualMode', actionArgs: { linewise: true }},
    { keys: '<C-v>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
    { keys: '<C-q>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
    { keys: 'gv', type: 'action', action: 'reselectLastSelection' },
    { keys: 'J', type: 'action', action: 'joinLines', isEdit: true },
    { keys: 'p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true }},
    { keys: 'P', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true }},
    { keys: 'r<character>', type: 'action', action: 'replace', isEdit: true },
    { keys: '@<character>', type: 'action', action: 'replayMacro' },
    { keys: 'q<character>', type: 'action', action: 'enterMacroRecordMode' },
    // Handle Replace-mode as a special case of insert mode.
    { keys: 'R', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { replace: true }},
    { keys: 'u', type: 'action', action: 'undo', context: 'normal' },
    { keys: 'u', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, context: 'visual', isEdit: true },
    { keys: 'U', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, context: 'visual', isEdit: true },
    { keys: '<C-r>', type: 'action', action: 'redo' },
    { keys: 'm<character>', type: 'action', action: 'setMark' },
    { keys: '"<character>', type: 'action', action: 'setRegister' },
    { keys: 'zz', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'center' }},
    { keys: 'z.', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'center' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: 'zt', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'top' }},
    { keys: 'z<CR>', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'top' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: 'z-', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'bottom' }},
    { keys: 'zb', type: 'action', action: 'scrollToCursor', actionArgs: { position: 'bottom' }, motion: 'moveToFirstNonWhiteSpaceCharacter' },
    { keys: '.', type: 'action', action: 'repeatLastEdit' },
    { keys: '<C-a>', type: 'action', action: 'incrementNumberToken', isEdit: true, actionArgs: {increase: true, backtrack: false}},
    { keys: '<C-x>', type: 'action', action: 'incrementNumberToken', isEdit: true, actionArgs: {increase: false, backtrack: false}},
    { keys: '<C-t>', type: 'action', action: 'indent', actionArgs: { indentRight: true }, context: 'insert' },
    { keys: '<C-d>', type: 'action', action: 'indent', actionArgs: { indentRight: false }, context: 'insert' },
    // Text object motions
    { keys: 'a<character>', type: 'motion', motion: 'textObjectManipulation' },
    { keys: 'i<character>', type: 'motion', motion: 'textObjectManipulation', motionArgs: { textObjectInner: true }},
    // Search
    { keys: '/', type: 'search', searchArgs: { forward: true, querySrc: 'prompt', toJumplist: true }},
    { keys: '?', type: 'search', searchArgs: { forward: false, querySrc: 'prompt', toJumplist: true }},
    { keys: '*', type: 'search', searchArgs: { forward: true, querySrc: 'wordUnderCursor', wholeWordOnly: true, toJumplist: true }},
    { keys: '#', type: 'search', searchArgs: { forward: false, querySrc: 'wordUnderCursor', wholeWordOnly: true, toJumplist: true }},
    { keys: 'g*', type: 'search', searchArgs: { forward: true, querySrc: 'wordUnderCursor', toJumplist: true }},
    { keys: 'g#', type: 'search', searchArgs: { forward: false, querySrc: 'wordUnderCursor', toJumplist: true }},
    // Ex command
    { keys: ':', type: 'ex' }
  ];
  var defaultKeymapLength = defaultKeymap.length;

  /**
   * Ex commands
   * Care must be taken when adding to the default Ex command map. For any
   * pair of commands that have a shared prefix, at least one of their
   * shortNames must not match the prefix of the other command.
   */
  var defaultExCommandMap = [
    { name: 'colorscheme', shortName: 'colo' },
    { name: 'map' },
    { name: 'imap', shortName: 'im' },
    { name: 'nmap', shortName: 'nm' },
    { name: 'vmap', shortName: 'vm' },
    { name: 'unmap' },
    { name: 'write', shortName: 'w' },
    { name: 'undo', shortName: 'u' },
    { name: 'redo', shortName: 'red' },
    { name: 'set', shortName: 'se' },
    { name: 'set', shortName: 'se' },
    { name: 'setlocal', shortName: 'setl' },
    { name: 'setglobal', shortName: 'setg' },
    { name: 'sort', shortName: 'sor' },
    { name: 'substitute', shortName: 's', possiblyAsync: true },
    { name: 'nohlsearch', shortName: 'noh' },
    { name: 'yank', shortName: 'y' },
    { name: 'delmarks', shortName: 'delm' },
    { name: 'registers', shortName: 'reg', excludeFromCommandHistory: true },
    { name: 'global', shortName: 'g' }
  ];

  var Pos = CodeMirror.Pos;

  var Vim = function() {
    function enterVimMode(cm) {
      cm.setOption('disableInput', true);
      cm.setOption('showCursorWhenSelecting', false);
      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
      cm.on('cursorActivity', onCursorActivity);
      maybeInitVimState(cm);
      CodeMirror.on(cm.getInputField(), 'paste', getOnPasteFn(cm));
    }

    function leaveVimMode(cm) {
      cm.setOption('disableInput', false);
      cm.off('cursorActivity', onCursorActivity);
      CodeMirror.off(cm.getInputField(), 'paste', getOnPasteFn(cm));
      cm.state.vim = null;
    }

    function detachVimMap(cm, next) {
      if (this == CodeMirror.keyMap.vim) {
        CodeMirror.rmClass(cm.getWrapperElement(), "cm-fat-cursor");
        if (cm.getOption("inputStyle") == "contenteditable" && document.body.style.caretColor != null) {
          disableFatCursorMark(cm);
          cm.getInputField().style.caretColor = "";
        }
      }

      if (!next || next.attach != attachVimMap)
        leaveVimMode(cm);
    }
    function attachVimMap(cm, prev) {
      if (this == CodeMirror.keyMap.vim) {
        CodeMirror.addClass(cm.getWrapperElement(), "cm-fat-cursor");
        if (cm.getOption("inputStyle") == "contenteditable" && document.body.style.caretColor != null) {
          enableFatCursorMark(cm);
          cm.getInputField().style.caretColor = "transparent";
        }
      }

      if (!prev || prev.attach != attachVimMap)
        enterVimMode(cm);
    }

    function fatCursorMarks(cm) {
      var ranges = cm.listSelections(), result = []
      for (var i = 0; i < ranges.length; i++) {
        var range = ranges[i]
        if (range.empty()) {
          if (range.anchor.ch < cm.getLine(range.anchor.line).length) {
            result.push(cm.markText(range.anchor, Pos(range.anchor.line, range.anchor.ch + 1),
                                    {className: "cm-fat-cursor-mark"}))
          } else {
            var widget = document.createElement("span")
            widget.textContent = "\u00a0"
            widget.className = "cm-fat-cursor-mark"
            result.push(cm.setBookmark(range.anchor, {widget: widget}))
          }
        }
      }
      return result
    }

    function updateFatCursorMark(cm) {
      var marks = cm.state.fatCursorMarks
      if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear()
      cm.state.fatCursorMarks = fatCursorMarks(cm)
    }

    function enableFatCursorMark(cm) {
      cm.state.fatCursorMarks = fatCursorMarks(cm)
      cm.on("cursorActivity", updateFatCursorMark)
    }

    function disableFatCursorMark(cm) {
      var marks = cm.state.fatCursorMarks
      if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear()
      cm.state.fatCursorMarks = null
      cm.off("cursorActivity", updateFatCursorMark)
    }

    // Deprecated, simply setting the keymap works again.
    CodeMirror.defineOption('vimMode', false, function(cm, val, prev) {
      if (val && cm.getOption("keyMap") != "vim")
        cm.setOption("keyMap", "vim");
      else if (!val && prev != CodeMirror.Init && /^vim/.test(cm.getOption("keyMap")))
        cm.setOption("keyMap", "default");
    });

    function cmKey(key, cm) {
      if (!cm) { return undefined; }
      if (this[key]) { return this[key]; }
      var vimKey = cmKeyToVimKey(key);
      if (!vimKey) {
        return false;
      }
      var cmd = CodeMirror.Vim.findKey(cm, vimKey);
      if (typeof cmd == 'function') {
        CodeMirror.signal(cm, 'vim-keypress', vimKey);
      }
      return cmd;
    }

    var modifiers = {'Shift': 'S', 'Ctrl': 'C', 'Alt': 'A', 'Cmd': 'D', 'Mod': 'A'};
    var specialKeys = {Enter:'CR',Backspace:'BS',Delete:'Del',Insert:'Ins'};
    function cmKeyToVimKey(key) {
      if (key.charAt(0) == '\'') {
        // Keypress character binding of format "'a'"
        return key.charAt(1);
      }
      var pieces = key.split(/-(?!$)/);
      var lastPiece = pieces[pieces.length - 1];
      if (pieces.length == 1 && pieces[0].length == 1) {
        // No-modifier bindings use literal character bindings above. Skip.
        return false;
      } else if (pieces.length == 2 && pieces[0] == 'Shift' && lastPiece.length == 1) {
        // Ignore Shift+char bindings as they should be handled by literal character.
        return false;
      }
      var hasCharacter = false;
      for (var i = 0; i < pieces.length; i++) {
        var piece = pieces[i];
        if (piece in modifiers) { pieces[i] = modifiers[piece]; }
        else { hasCharacter = true; }
        if (piece in specialKeys) { pieces[i] = specialKeys[piece]; }
      }
      if (!hasCharacter) {
        // Vim does not support modifier only keys.
        return false;
      }
      // TODO: Current bindings expect the character to be lower case, but
      // it looks like vim key notation uses upper case.
      if (isUpperCase(lastPiece)) {
        pieces[pieces.length - 1] = lastPiece.toLowerCase();
      }
      return '<' + pieces.join('-') + '>';
    }

    function getOnPasteFn(cm) {
      var vim = cm.state.vim;
      if (!vim.onPasteFn) {
        vim.onPasteFn = function() {
          if (!vim.insertMode) {
            cm.setCursor(offsetCursor(cm.getCursor(), 0, 1));
            actions.enterInsertMode(cm, {}, vim);
          }
        };
      }
      return vim.onPasteFn;
    }

    var numberRegex = /[\d]/;
    var wordCharTest = [CodeMirror.isWordChar, function(ch) {
      return ch && !CodeMirror.isWordChar(ch) && !/\s/.test(ch);
    }], bigWordCharTest = [function(ch) {
      return /\S/.test(ch);
    }];
    function makeKeyRange(start, size) {
      var keys = [];
      for (var i = start; i < start + size; i++) {
        keys.push(String.fromCharCode(i));
      }
      return keys;
    }
    var upperCaseAlphabet = makeKeyRange(65, 26);
    var lowerCaseAlphabet = makeKeyRange(97, 26);
    var numbers = makeKeyRange(48, 10);
    var validMarks = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['<', '>']);
    var validRegisters = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['-', '"', '.', ':', '/']);

    function isLine(cm, line) {
      return line >= cm.firstLine() && line <= cm.lastLine();
    }
    function isLowerCase(k) {
      return (/^[a-z]$/).test(k);
    }
    function isMatchableSymbol(k) {
      return '()[]{}'.indexOf(k) != -1;
    }
    function isNumber(k) {
      return numberRegex.test(k);
    }
    function isUpperCase(k) {
      return (/^[A-Z]$/).test(k);
    }
    function isWhiteSpaceString(k) {
      return (/^\s*$/).test(k);
    }
    function isEndOfSentenceSymbol(k) {
      return '.?!'.indexOf(k) != -1;
    }
    function inArray(val, arr) {
      for (var i = 0; i < arr.length; i++) {
        if (arr[i] == val) {
          return true;
        }
      }
      return false;
    }

    var options = {};
    function defineOption(name, defaultValue, type, aliases, callback) {
      if (defaultValue === undefined && !callback) {
        throw Error('defaultValue is required unless callback is provided');
      }
      if (!type) { type = 'string'; }
      options[name] = {
        type: type,
        defaultValue: defaultValue,
        callback: callback
      };
      if (aliases) {
        for (var i = 0; i < aliases.length; i++) {
          options[aliases[i]] = options[name];
        }
      }
      if (defaultValue) {
        setOption(name, defaultValue);
      }
    }

    function setOption(name, value, cm, cfg) {
      var option = options[name];
      cfg = cfg || {};
      var scope = cfg.scope;
      if (!option) {
        return new Error('Unknown option: ' + name);
      }
      if (option.type == 'boolean') {
        if (value && value !== true) {
          return new Error('Invalid argument: ' + name + '=' + value);
        } else if (value !== false) {
          // Boolean options are set to true if value is not defined.
          value = true;
        }
      }
      if (option.callback) {
        if (scope !== 'local') {
          option.callback(value, undefined);
        }
        if (scope !== 'global' && cm) {
          option.callback(value, cm);
        }
      } else {
        if (scope !== 'local') {
          option.value = option.type == 'boolean' ? !!value : value;
        }
        if (scope !== 'global' && cm) {
          cm.state.vim.options[name] = {value: value};
        }
      }
    }

    function getOption(name, cm, cfg) {
      var option = options[name];
      cfg = cfg || {};
      var scope = cfg.scope;
      if (!option) {
        return new Error('Unknown option: ' + name);
      }
      if (option.callback) {
        var local = cm && option.callback(undefined, cm);
        if (scope !== 'global' && local !== undefined) {
          return local;
        }
        if (scope !== 'local') {
          return option.callback();
        }
        return;
      } else {
        var local = (scope !== 'global') && (cm && cm.state.vim.options[name]);
        return (local || (scope !== 'local') && option || {}).value;
      }
    }

    defineOption('filetype', undefined, 'string', ['ft'], function(name, cm) {
      // Option is local. Do nothing for global.
      if (cm === undefined) {
        return;
      }
      // The 'filetype' option proxies to the CodeMirror 'mode' option.
      if (name === undefined) {
        var mode = cm.getOption('mode');
        return mode == 'null' ? '' : mode;
      } else {
        var mode = name == '' ? 'null' : name;
        cm.setOption('mode', mode);
      }
    });

    var createCircularJumpList = function() {
      var size = 100;
      var pointer = -1;
      var head = 0;
      var tail = 0;
      var buffer = new Array(size);
      function add(cm, oldCur, newCur) {
        var current = pointer % size;
        var curMark = buffer[current];
        function useNextSlot(cursor) {
          var next = ++pointer % size;
          var trashMark = buffer[next];
          if (trashMark) {
            trashMark.clear();
          }
          buffer[next] = cm.setBookmark(cursor);
        }
        if (curMark) {
          var markPos = curMark.find();
          // avoid recording redundant cursor position
          if (markPos && !cursorEqual(markPos, oldCur)) {
            useNextSlot(oldCur);
          }
        } else {
          useNextSlot(oldCur);
        }
        useNextSlot(newCur);
        head = pointer;
        tail = pointer - size + 1;
        if (tail < 0) {
          tail = 0;
        }
      }
      function move(cm, offset) {
        pointer += offset;
        if (pointer > head) {
          pointer = head;
        } else if (pointer < tail) {
          pointer = tail;
        }
        var mark = buffer[(size + pointer) % size];
        // skip marks that are temporarily removed from text buffer
        if (mark && !mark.find()) {
          var inc = offset > 0 ? 1 : -1;
          var newCur;
          var oldCur = cm.getCursor();
          do {
            pointer += inc;
            mark = buffer[(size + pointer) % size];
            // skip marks that are the same as current position
            if (mark &&
                (newCur = mark.find()) &&
                !cursorEqual(oldCur, newCur)) {
              break;
            }
          } while (pointer < head && pointer > tail);
        }
        return mark;
      }
      return {
        cachedCursor: undefined, //used for # and * jumps
        add: add,
        move: move
      };
    };

    // Returns an object to track the changes associated insert mode.  It
    // clones the object that is passed in, or creates an empty object one if
    // none is provided.
    var createInsertModeChanges = function(c) {
      if (c) {
        // Copy construction
        return {
          changes: c.changes,
          expectCursorActivityForChange: c.expectCursorActivityForChange
        };
      }
      return {
        // Change list
        changes: [],
        // Set to true on change, false on cursorActivity.
        expectCursorActivityForChange: false
      };
    };

    function MacroModeState() {
      this.latestRegister = undefined;
      this.isPlaying = false;
      this.isRecording = false;
      this.replaySearchQueries = [];
      this.onRecordingDone = undefined;
      this.lastInsertModeChanges = createInsertModeChanges();
    }
    MacroModeState.prototype = {
      exitMacroRecordMode: function() {
        var macroModeState = vimGlobalState.macroModeState;
        if (macroModeState.onRecordingDone) {
          macroModeState.onRecordingDone(); // close dialog
        }
        macroModeState.onRecordingDone = undefined;
        macroModeState.isRecording = false;
      },
      enterMacroRecordMode: function(cm, registerName) {
        var register =
            vimGlobalState.registerController.getRegister(registerName);
        if (register) {
          register.clear();
          this.latestRegister = registerName;
          if (cm.openDialog) {
            this.onRecordingDone = cm.openDialog(
                '(recording)['+registerName+']', null, {bottom:true});
          }
          this.isRecording = true;
        }
      }
    };

    function maybeInitVimState(cm) {
      if (!cm.state.vim) {
        // Store instance state in the CodeMirror object.
        cm.state.vim = {
          inputState: new InputState(),
          // Vim's input state that triggered the last edit, used to repeat
          // motions and operators with '.'.
          lastEditInputState: undefined,
          // Vim's action command before the last edit, used to repeat actions
          // with '.' and insert mode repeat.
          lastEditActionCommand: undefined,
          // When using jk for navigation, if you move from a longer line to a
          // shorter line, the cursor may clip to the end of the shorter line.
          // If j is pressed again and cursor goes to the next line, the
          // cursor should go back to its horizontal position on the longer
          // line if it can. This is to keep track of the horizontal position.
          lastHPos: -1,
          // Doing the same with screen-position for gj/gk
          lastHSPos: -1,
          // The last motion command run. Cleared if a non-motion command gets
          // executed in between.
          lastMotion: null,
          marks: {},
          // Mark for rendering fake cursor for visual mode.
          fakeCursor: null,
          insertMode: false,
          // Repeat count for changes made in insert mode, triggered by key
          // sequences like 3,i. Only exists when insertMode is true.
          insertModeRepeat: undefined,
          visualMode: false,
          // If we are in visual line mode. No effect if visualMode is false.
          visualLine: false,
          visualBlock: false,
          lastSelection: null,
          lastPastedText: null,
          sel: {},
          // Buffer-local/window-local values of vim options.
          options: {}
        };
      }
      return cm.state.vim;
    }
    var vimGlobalState;
    function resetVimGlobalState() {
      vimGlobalState = {
        // The current search query.
        searchQuery: null,
        // Whether we are searching backwards.
        searchIsReversed: false,
        // Replace part of the last substituted pattern
        lastSubstituteReplacePart: undefined,
        jumpList: createCircularJumpList(),
        macroModeState: new MacroModeState,
        // Recording latest f, t, F or T motion command.
        lastCharacterSearch: {increment:0, forward:true, selectedCharacter:''},
        registerController: new RegisterController({}),
        // search history buffer
        searchHistoryController: new HistoryController(),
        // ex Command history buffer
        exCommandHistoryController : new HistoryController()
      };
      for (var optionName in options) {
        var option = options[optionName];
        option.value = option.defaultValue;
      }
    }

    var lastInsertModeKeyTimer;
    var vimApi= {
      buildKeyMap: function() {
        // TODO: Convert keymap into dictionary format for fast lookup.
      },
      // Testing hook, though it might be useful to expose the register
      // controller anyways.
      getRegisterController: function() {
        return vimGlobalState.registerController;
      },
      // Testing hook.
      resetVimGlobalState_: resetVimGlobalState,

      // Testing hook.
      getVimGlobalState_: function() {
        return vimGlobalState;
      },

      // Testing hook.
      maybeInitVimState_: maybeInitVimState,

      suppressErrorLogging: false,

      InsertModeKey: InsertModeKey,
      map: function(lhs, rhs, ctx) {
        // Add user defined key bindings.
        exCommandDispatcher.map(lhs, rhs, ctx);
      },
      unmap: function(lhs, ctx) {
        exCommandDispatcher.unmap(lhs, ctx);
      },
      // Non-recursive map function.
      // NOTE: This will not create mappings to key maps that aren't present
      // in the default key map. See TODO at bottom of function.
      noremap: function(lhs, rhs, ctx) {
        function toCtxArray(ctx) {
          return ctx ? [ctx] : ['normal', 'insert', 'visual'];
        }
        var ctxsToMap = toCtxArray(ctx);
        // Look through all actual defaults to find a map candidate.
        var actualLength = defaultKeymap.length, origLength = defaultKeymapLength;
        for (var i = actualLength - origLength;
             i < actualLength && ctxsToMap.length;
             i++) {
          var mapping = defaultKeymap[i];
          // Omit mappings that operate in the wrong context(s) and those of invalid type.
          if (mapping.keys == rhs &&
              (!ctx || !mapping.context || mapping.context === ctx) &&
              mapping.type.substr(0, 2) !== 'ex' &&
              mapping.type.substr(0, 3) !== 'key') {
            // Make a shallow copy of the original keymap entry.
            var newMapping = {};
            for (var key in mapping) {
              newMapping[key] = mapping[key];
            }
            // Modify it point to the new mapping with the proper context.
            newMapping.keys = lhs;
            if (ctx && !newMapping.context) {
              newMapping.context = ctx;
            }
            // Add it to the keymap with a higher priority than the original.
            this._mapCommand(newMapping);
            // Record the mapped contexts as complete.
            var mappedCtxs = toCtxArray(mapping.context);
            ctxsToMap = ctxsToMap.filter(function(el) { return mappedCtxs.indexOf(el) === -1; });
          }
        }
        // TODO: Create non-recursive keyToKey mappings for the unmapped contexts once those exist.
      },
      // Remove all user-defined mappings for the provided context.
      mapclear: function(ctx) {
        // Partition the existing keymap into user-defined and true defaults.
        var actualLength = defaultKeymap.length,
            origLength = defaultKeymapLength;
        var userKeymap = defaultKeymap.slice(0, actualLength - origLength);
        defaultKeymap = defaultKeymap.slice(actualLength - origLength);
        if (ctx) {
          // If a specific context is being cleared, we need to keep mappings
          // from all other contexts.
          for (var i = userKeymap.length - 1; i >= 0; i--) {
            var mapping = userKeymap[i];
            if (ctx !== mapping.context) {
              if (mapping.context) {
                this._mapCommand(mapping);
              } else {
                // `mapping` applies to all contexts so create keymap copies
                // for each context except the one being cleared.
                var contexts = ['normal', 'insert', 'visual'];
                for (var j in contexts) {
                  if (contexts[j] !== ctx) {
                    var newMapping = {};
                    for (var key in mapping) {
                      newMapping[key] = mapping[key];
                    }
                    newMapping.context = contexts[j];
                    this._mapCommand(newMapping);
                  }
                }
              }
            }
          }
        }
      },
      // TODO: Expose setOption and getOption as instance methods. Need to decide how to namespace
      // them, or somehow make them work with the existing CodeMirror setOption/getOption API.
      setOption: setOption,
      getOption: getOption,
      defineOption: defineOption,
      defineEx: function(name, prefix, func){
        if (!prefix) {
          prefix = name;
        } else if (name.indexOf(prefix) !== 0) {
          throw new Error('(Vim.defineEx) "'+prefix+'" is not a prefix of "'+name+'", command not registered');
        }
        exCommands[name]=func;
        exCommandDispatcher.commandMap_[prefix]={name:name, shortName:prefix, type:'api'};
      },
      handleKey: function (cm, key, origin) {
        var command = this.findKey(cm, key, origin);
        if (typeof command === 'function') {
          return command();
        }
      },
      /**
       * This is the outermost function called by CodeMirror, after keys have
       * been mapped to their Vim equivalents.
       *
       * Finds a command based on the key (and cached keys if there is a
       * multi-key sequence). Returns `undefined` if no key is matched, a noop
       * function if a partial match is found (multi-key), and a function to
       * execute the bound command if a a key is matched. The function always
       * returns true.
       */
      findKey: function(cm, key, origin) {
        var vim = maybeInitVimState(cm);
        function handleMacroRecording() {
          var macroModeState = vimGlobalState.macroModeState;
          if (macroModeState.isRecording) {
            if (key == 'q') {
              macroModeState.exitMacroRecordMode();
              clearInputState(cm);
              return true;
            }
            if (origin != 'mapping') {
              logKey(macroModeState, key);
            }
          }
        }
        function handleEsc() {
          if (key == '<Esc>') {
            // Clear input state and get back to normal mode.
            clearInputState(cm);
            if (vim.visualMode) {
              exitVisualMode(cm);
            } else if (vim.insertMode) {
              exitInsertMode(cm);
            }
            return true;
          }
        }
        function doKeyToKey(keys) {
          // TODO: prevent infinite recursion.
          var match;
          while (keys) {
            // Pull off one command key, which is either a single character
            // or a special sequence wrapped in '<' and '>', e.g. '<Space>'.
            match = (/<\w+-.+?>|<\w+>|./).exec(keys);
            key = match[0];
            keys = keys.substring(match.index + key.length);
            CodeMirror.Vim.handleKey(cm, key, 'mapping');
          }
        }

        function handleKeyInsertMode() {
          if (handleEsc()) { return true; }
          var keys = vim.inputState.keyBuffer = vim.inputState.keyBuffer + key;
          var keysAreChars = key.length == 1;
          var match = commandDispatcher.matchCommand(keys, defaultKeymap, vim.inputState, 'insert');
          // Need to check all key substrings in insert mode.
          while (keys.length > 1 && match.type != 'full') {
            var keys = vim.inputState.keyBuffer = keys.slice(1);
            var thisMatch = commandDispatcher.matchCommand(keys, defaultKeymap, vim.inputState, 'insert');
            if (thisMatch.type != 'none') { match = thisMatch; }
          }
          if (match.type == 'none') { clearInputState(cm); return false; }
          else if (match.type == 'partial') {
            if (lastInsertModeKeyTimer) { window.clearTimeout(lastInsertModeKeyTimer); }
            lastInsertModeKeyTimer = window.setTimeout(
              function() { if (vim.insertMode && vim.inputState.keyBuffer) { clearInputState(cm); } },
              getOption('insertModeEscKeysTimeout'));
            return !keysAreChars;
          }

          if (lastInsertModeKeyTimer) { window.clearTimeout(lastInsertModeKeyTimer); }
          if (keysAreChars) {
            var selections = cm.listSelections();
            for (var i = 0; i < selections.length; i++) {
              var here = selections[i].head;
              cm.replaceRange('', offsetCursor(here, 0, -(keys.length - 1)), here, '+input');
            }
            vimGlobalState.macroModeState.lastInsertModeChanges.changes.pop();
          }
          clearInputState(cm);
          return match.command;
        }

        function handleKeyNonInsertMode() {
          if (handleMacroRecording() || handleEsc()) { return true; }

          var keys = vim.inputState.keyBuffer = vim.inputState.keyBuffer + key;
          if (/^[1-9]\d*$/.test(keys)) { return true; }

          var keysMatcher = /^(\d*)(.*)$/.exec(keys);
          if (!keysMatcher) { clearInputState(cm); return false; }
          var context = vim.visualMode ? 'visual' :
                                         'normal';
          var match = commandDispatcher.matchCommand(keysMatcher[2] || keysMatcher[1], defaultKeymap, vim.inputState, context);
          if (match.type == 'none') { clearInputState(cm); return false; }
          else if (match.type == 'partial') { return true; }

          vim.inputState.keyBuffer = '';
          var keysMatcher = /^(\d*)(.*)$/.exec(keys);
          if (keysMatcher[1] && keysMatcher[1] != '0') {
            vim.inputState.pushRepeatDigit(keysMatcher[1]);
          }
          return match.command;
        }

        var command;
        if (vim.insertMode) { command = handleKeyInsertMode(); }
        else { command = handleKeyNonInsertMode(); }
        if (command === false) {
          return !vim.insertMode && key.length === 1 ? function() { return true; } : undefined;
        } else if (command === true) {
          // TODO: Look into using CodeMirror's multi-key handling.
          // Return no-op since we are caching the key. Counts as handled, but
          // don't want act on it just yet.
          return function() { return true; };
        } else {
          return function() {
            return cm.operation(function() {
              cm.curOp.isVimOp = true;
              try {
                if (command.type == 'keyToKey') {
                  doKeyToKey(command.toKeys);
                } else {
                  commandDispatcher.processCommand(cm, vim, command);
                }
              } catch (e) {
                // clear VIM state in case it's in a bad state.
                cm.state.vim = undefined;
                maybeInitVimState(cm);
                if (!CodeMirror.Vim.suppressErrorLogging) {
                  console['log'](e);
                }
                throw e;
              }
              return true;
            });
          };
        }
      },
      handleEx: function(cm, input) {
        exCommandDispatcher.processCommand(cm, input);
      },

      defineMotion: defineMotion,
      defineAction: defineAction,
      defineOperator: defineOperator,
      mapCommand: mapCommand,
      _mapCommand: _mapCommand,

      defineRegister: defineRegister,

      exitVisualMode: exitVisualMode,
      exitInsertMode: exitInsertMode
    };

    // Represents the current input state.
    function InputState() {
      this.prefixRepeat = [];
      this.motionRepeat = [];

      this.operator = null;
      this.operatorArgs = null;
      this.motion = null;
      this.motionArgs = null;
      this.keyBuffer = []; // For matching multi-key commands.
      this.registerName = null; // Defaults to the unnamed register.
    }
    InputState.prototype.pushRepeatDigit = function(n) {
      if (!this.operator) {
        this.prefixRepeat = this.prefixRepeat.concat(n);
      } else {
        this.motionRepeat = this.motionRepeat.concat(n);
      }
    };
    InputState.prototype.getRepeat = function() {
      var repeat = 0;
      if (this.prefixRepeat.length > 0 || this.motionRepeat.length > 0) {
        repeat = 1;
        if (this.prefixRepeat.length > 0) {
          repeat *= parseInt(this.prefixRepeat.join(''), 10);
        }
        if (this.motionRepeat.length > 0) {
          repeat *= parseInt(this.motionRepeat.join(''), 10);
        }
      }
      return repeat;
    };

    function clearInputState(cm, reason) {
      cm.state.vim.inputState = new InputState();
      CodeMirror.signal(cm, 'vim-command-done', reason);
    }

    /*
     * Register stores information about copy and paste registers.  Besides
     * text, a register must store whether it is linewise (i.e., when it is
     * pasted, should it insert itself into a new line, or should the text be
     * inserted at the cursor position.)
     */
    function Register(text, linewise, blockwise) {
      this.clear();
      this.keyBuffer = [text || ''];
      this.insertModeChanges = [];
      this.searchQueries = [];
      this.linewise = !!linewise;
      this.blockwise = !!blockwise;
    }
    Register.prototype = {
      setText: function(text, linewise, blockwise) {
        this.keyBuffer = [text || ''];
        this.linewise = !!linewise;
        this.blockwise = !!blockwise;
      },
      pushText: function(text, linewise) {
        // if this register has ever been set to linewise, use linewise.
        if (linewise) {
          if (!this.linewise) {
            this.keyBuffer.push('\n');
          }
          this.linewise = true;
        }
        this.keyBuffer.push(text);
      },
      pushInsertModeChanges: function(changes) {
        this.insertModeChanges.push(createInsertModeChanges(changes));
      },
      pushSearchQuery: function(query) {
        this.searchQueries.push(query);
      },
      clear: function() {
        this.keyBuffer = [];
        this.insertModeChanges = [];
        this.searchQueries = [];
        this.linewise = false;
      },
      toString: function() {
        return this.keyBuffer.join('');
      }
    };

    /**
     * Defines an external register.
     *
     * The name should be a single character that will be used to reference the register.
     * The register should support setText, pushText, clear, and toString(). See Register
     * for a reference implementation.
     */
    function defineRegister(name, register) {
      var registers = vimGlobalState.registerController.registers;
      if (!name || name.length != 1) {
        throw Error('Register name must be 1 character');
      }
      if (registers[name]) {
        throw Error('Register already defined ' + name);
      }
      registers[name] = register;
      validRegisters.push(name);
    }

    /*
     * vim registers allow you to keep many independent copy and paste buffers.
     * See http://usevim.com/2012/04/13/registers/ for an introduction.
     *
     * RegisterController keeps the state of all the registers.  An initial
     * state may be passed in.  The unnamed register '"' will always be
     * overridden.
     */
    function RegisterController(registers) {
      this.registers = registers;
      this.unnamedRegister = registers['"'] = new Register();
      registers['.'] = new Register();
      registers[':'] = new Register();
      registers['/'] = new Register();
    }
    RegisterController.prototype = {
      pushText: function(registerName, operator, text, linewise, blockwise) {
        if (linewise && text.charAt(text.length - 1) !== '\n'){
          text += '\n';
        }
        // Lowercase and uppercase registers refer to the same register.
        // Uppercase just means append.
        var register = this.isValidRegister(registerName) ?
            this.getRegister(registerName) : null;
        // if no register/an invalid register was specified, things go to the
        // default registers
        if (!register) {
          switch (operator) {
            case 'yank':
              // The 0 register contains the text from the most recent yank.
              this.registers['0'] = new Register(text, linewise, blockwise);
              break;
            case 'delete':
            case 'change':
              if (text.indexOf('\n') == -1) {
                // Delete less than 1 line. Update the small delete register.
                this.registers['-'] = new Register(text, linewise);
              } else {
                // Shift down the contents of the numbered registers and put the
                // deleted text into register 1.
                this.shiftNumericRegisters_();
                this.registers['1'] = new Register(text, linewise);
              }
              break;
          }
          // Make sure the unnamed register is set to what just happened
          this.unnamedRegister.setText(text, linewise, blockwise);
          return;
        }

        // If we've gotten to this point, we've actually specified a register
        var append = isUpperCase(registerName);
        if (append) {
          register.pushText(text, linewise);
        } else {
          register.setText(text, linewise, blockwise);
        }
        // The unnamed register always has the same value as the last used
        // register.
        this.unnamedRegister.setText(register.toString(), linewise);
      },
      // Gets the register named @name.  If one of @name doesn't already exist,
      // create it.  If @name is invalid, return the unnamedRegister.
      getRegister: function(name) {
        if (!this.isValidRegister(name)) {
          return this.unnamedRegister;
        }
        name = name.toLowerCase();
        if (!this.registers[name]) {
          this.registers[name] = new Register();
        }
        return this.registers[name];
      },
      isValidRegister: function(name) {
        return name && inArray(name, validRegisters);
      },
      shiftNumericRegisters_: function() {
        for (var i = 9; i >= 2; i--) {
          this.registers[i] = this.getRegister('' + (i - 1));
        }
      }
    };
    function HistoryController() {
        this.historyBuffer = [];
        this.iterator = 0;
        this.initialPrefix = null;
    }
    HistoryController.prototype = {
      // the input argument here acts a user entered prefix for a small time
      // until we start autocompletion in which case it is the autocompleted.
      nextMatch: function (input, up) {
        var historyBuffer = this.historyBuffer;
        var dir = up ? -1 : 1;
        if (this.initialPrefix === null) this.initialPrefix = input;
        for (var i = this.iterator + dir; up ? i >= 0 : i < historyBuffer.length; i+= dir) {
          var element = historyBuffer[i];
          for (var j = 0; j <= element.length; j++) {
            if (this.initialPrefix == element.substring(0, j)) {
              this.iterator = i;
              return element;
            }
          }
        }
        // should return the user input in case we reach the end of buffer.
        if (i >= historyBuffer.length) {
          this.iterator = historyBuffer.length;
          return this.initialPrefix;
        }
        // return the last autocompleted query or exCommand as it is.
        if (i < 0 ) return input;
      },
      pushInput: function(input) {
        var index = this.historyBuffer.indexOf(input);
        if (index > -1) this.historyBuffer.splice(index, 1);
        if (input.length) this.historyBuffer.push(input);
      },
      reset: function() {
        this.initialPrefix = null;
        this.iterator = this.historyBuffer.length;
      }
    };
    var commandDispatcher = {
      matchCommand: function(keys, keyMap, inputState, context) {
        var matches = commandMatches(keys, keyMap, context, inputState);
        if (!matches.full && !matches.partial) {
          return {type: 'none'};
        } else if (!matches.full && matches.partial) {
          return {type: 'partial'};
        }

        var bestMatch;
        for (var i = 0; i < matches.full.length; i++) {
          var match = matches.full[i];
          if (!bestMatch) {
            bestMatch = match;
          }
        }
        if (bestMatch.keys.slice(-11) == '<character>') {
          var character = lastChar(keys);
          if (!character) return {type: 'none'};
          inputState.selectedCharacter = character;
        }
        return {type: 'full', command: bestMatch};
      },
      processCommand: function(cm, vim, command) {
        vim.inputState.repeatOverride = command.repeatOverride;
        switch (command.type) {
          case 'motion':
            this.processMotion(cm, vim, command);
            break;
          case 'operator':
            this.processOperator(cm, vim, command);
            break;
          case 'operatorMotion':
            this.processOperatorMotion(cm, vim, command);
            break;
          case 'action':
            this.processAction(cm, vim, command);
            break;
          case 'search':
            this.processSearch(cm, vim, command);
            break;
          case 'ex':
          case 'keyToEx':
            this.processEx(cm, vim, command);
            break;
          default:
            break;
        }
      },
      processMotion: function(cm, vim, command) {
        vim.inputState.motion = command.motion;
        vim.inputState.motionArgs = copyArgs(command.motionArgs);
        this.evalInput(cm, vim);
      },
      processOperator: function(cm, vim, command) {
        var inputState = vim.inputState;
        if (inputState.operator) {
          if (inputState.operator == command.operator) {
            // Typing an operator twice like 'dd' makes the operator operate
            // linewise
            inputState.motion = 'expandToLine';
            inputState.motionArgs = { linewise: true };
            this.evalInput(cm, vim);
            return;
          } else {
            // 2 different operators in a row doesn't make sense.
            clearInputState(cm);
          }
        }
        inputState.operator = command.operator;
        inputState.operatorArgs = copyArgs(command.operatorArgs);
        if (vim.visualMode) {
          // Operating on a selection in visual mode. We don't need a motion.
          this.evalInput(cm, vim);
        }
      },
      processOperatorMotion: function(cm, vim, command) {
        var visualMode = vim.visualMode;
        var operatorMotionArgs = copyArgs(command.operatorMotionArgs);
        if (operatorMotionArgs) {
          // Operator motions may have special behavior in visual mode.
          if (visualMode && operatorMotionArgs.visualLine) {
            vim.visualLine = true;
          }
        }
        this.processOperator(cm, vim, command);
        if (!visualMode) {
          this.processMotion(cm, vim, command);
        }
      },
      processAction: function(cm, vim, command) {
        var inputState = vim.inputState;
        var repeat = inputState.getRepeat();
        var repeatIsExplicit = !!repeat;
        var actionArgs = copyArgs(command.actionArgs) || {};
        if (inputState.selectedCharacter) {
          actionArgs.selectedCharacter = inputState.selectedCharacter;
        }
        // Actions may or may not have motions and operators. Do these first.
        if (command.operator) {
          this.processOperator(cm, vim, command);
        }
        if (command.motion) {
          this.processMotion(cm, vim, command);
        }
        if (command.motion || command.operator) {
          this.evalInput(cm, vim);
        }
        actionArgs.repeat = repeat || 1;
        actionArgs.repeatIsExplicit = repeatIsExplicit;
        actionArgs.registerName = inputState.registerName;
        clearInputState(cm);
        vim.lastMotion = null;
        if (command.isEdit) {
          this.recordLastEdit(vim, inputState, command);
        }
        actions[command.action](cm, actionArgs, vim);
      },
      processSearch: function(cm, vim, command) {
        if (!cm.getSearchCursor) {
          // Search depends on SearchCursor.
          return;
        }
        var forward = command.searchArgs.forward;
        var wholeWordOnly = command.searchArgs.wholeWordOnly;
        getSearchState(cm).setReversed(!forward);
        var promptPrefix = (forward) ? '/' : '?';
        var originalQuery = getSearchState(cm).getQuery();
        var originalScrollPos = cm.getScrollInfo();
        function handleQuery(query, ignoreCase, smartCase) {
          vimGlobalState.searchHistoryController.pushInput(query);
          vimGlobalState.searchHistoryController.reset();
          try {
            updateSearchQuery(cm, query, ignoreCase, smartCase);
          } catch (e) {
            showConfirm(cm, 'Invalid regex: ' + query);
            clearInputState(cm);
            return;
          }
          commandDispatcher.processMotion(cm, vim, {
            type: 'motion',
            motion: 'findNext',
            motionArgs: { forward: true, toJumplist: command.searchArgs.toJumplist }
          });
        }
        function onPromptClose(query) {
          cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
          handleQuery(query, true /** ignoreCase */, true /** smartCase */);
          var macroModeState = vimGlobalState.macroModeState;
          if (macroModeState.isRecording) {
            logSearchQuery(macroModeState, query);
          }
        }
        function onPromptKeyUp(e, query, close) {
          var keyName = CodeMirror.keyName(e), up, offset;
          if (keyName == 'Up' || keyName == 'Down') {
            up = keyName == 'Up' ? true : false;
            offset = e.target ? e.target.selectionEnd : 0;
            query = vimGlobalState.searchHistoryController.nextMatch(query, up) || '';
            close(query);
            if (offset && e.target) e.target.selectionEnd = e.target.selectionStart = Math.min(offset, e.target.value.length);
          } else {
            if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
              vimGlobalState.searchHistoryController.reset();
          }
          var parsedQuery;
          try {
            parsedQuery = updateSearchQuery(cm, query,
                true /** ignoreCase */, true /** smartCase */);
          } catch (e) {
            // Swallow bad regexes for incremental search.
          }
          if (parsedQuery) {
            cm.scrollIntoView(findNext(cm, !forward, parsedQuery), 30);
          } else {
            clearSearchHighlight(cm);
            cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
          }
        }
        function onPromptKeyDown(e, query, close) {
          var keyName = CodeMirror.keyName(e);
          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
              (keyName == 'Backspace' && query == '')) {
            vimGlobalState.searchHistoryController.pushInput(query);
            vimGlobalState.searchHistoryController.reset();
            updateSearchQuery(cm, originalQuery);
            clearSearchHighlight(cm);
            cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
            CodeMirror.e_stop(e);
            clearInputState(cm);
            close();
            cm.focus();
          } else if (keyName == 'Up' || keyName == 'Down') {
            CodeMirror.e_stop(e);
          } else if (keyName == 'Ctrl-U') {
            // Ctrl-U clears input.
            CodeMirror.e_stop(e);
            close('');
          }
        }
        switch (command.searchArgs.querySrc) {
          case 'prompt':
            var macroModeState = vimGlobalState.macroModeState;
            if (macroModeState.isPlaying) {
              var query = macroModeState.replaySearchQueries.shift();
              handleQuery(query, true /** ignoreCase */, false /** smartCase */);
            } else {
              showPrompt(cm, {
                  onClose: onPromptClose,
                  prefix: promptPrefix,
                  desc: searchPromptDesc,
                  onKeyUp: onPromptKeyUp,
                  onKeyDown: onPromptKeyDown
              });
            }
            break;
          case 'wordUnderCursor':
            var word = expandWordUnderCursor(cm, false /** inclusive */,
                true /** forward */, false /** bigWord */,
                true /** noSymbol */);
            var isKeyword = true;
            if (!word) {
              word = expandWordUnderCursor(cm, false /** inclusive */,
                  true /** forward */, false /** bigWord */,
                  false /** noSymbol */);
              isKeyword = false;
            }
            if (!word) {
              return;
            }
            var query = cm.getLine(word.start.line).substring(word.start.ch,
                word.end.ch);
            if (isKeyword && wholeWordOnly) {
                query = '\\b' + query + '\\b';
            } else {
              query = escapeRegex(query);
            }

            // cachedCursor is used to save the old position of the cursor
            // when * or # causes vim to seek for the nearest word and shift
            // the cursor before entering the motion.
            vimGlobalState.jumpList.cachedCursor = cm.getCursor();
            cm.setCursor(word.start);

            handleQuery(query, true /** ignoreCase */, false /** smartCase */);
            break;
        }
      },
      processEx: function(cm, vim, command) {
        function onPromptClose(input) {
          // Give the prompt some time to close so that if processCommand shows
          // an error, the elements don't overlap.
          vimGlobalState.exCommandHistoryController.pushInput(input);
          vimGlobalState.exCommandHistoryController.reset();
          exCommandDispatcher.processCommand(cm, input);
        }
        function onPromptKeyDown(e, input, close) {
          var keyName = CodeMirror.keyName(e), up, offset;
          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
              (keyName == 'Backspace' && input == '')) {
            vimGlobalState.exCommandHistoryController.pushInput(input);
            vimGlobalState.exCommandHistoryController.reset();
            CodeMirror.e_stop(e);
            clearInputState(cm);
            close();
            cm.focus();
          }
          if (keyName == 'Up' || keyName == 'Down') {
            CodeMirror.e_stop(e);
            up = keyName == 'Up' ? true : false;
            offset = e.target ? e.target.selectionEnd : 0;
            input = vimGlobalState.exCommandHistoryController.nextMatch(input, up) || '';
            close(input);
            if (offset && e.target) e.target.selectionEnd = e.target.selectionStart = Math.min(offset, e.target.value.length);
          } else if (keyName == 'Ctrl-U') {
            // Ctrl-U clears input.
            CodeMirror.e_stop(e);
            close('');
          } else {
            if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
              vimGlobalState.exCommandHistoryController.reset();
          }
        }
        if (command.type == 'keyToEx') {
          // Handle user defined Ex to Ex mappings
          exCommandDispatcher.processCommand(cm, command.exArgs.input);
        } else {
          if (vim.visualMode) {
            showPrompt(cm, { onClose: onPromptClose, prefix: ':', value: '\'<,\'>',
                onKeyDown: onPromptKeyDown, selectValueOnOpen: false});
          } else {
            showPrompt(cm, { onClose: onPromptClose, prefix: ':',
                onKeyDown: onPromptKeyDown});
          }
        }
      },
      evalInput: function(cm, vim) {
        // If the motion command is set, execute both the operator and motion.
        // Otherwise return.
        var inputState = vim.inputState;
        var motion = inputState.motion;
        var motionArgs = inputState.motionArgs || {};
        var operator = inputState.operator;
        var operatorArgs = inputState.operatorArgs || {};
        var registerName = inputState.registerName;
        var sel = vim.sel;
        // TODO: Make sure cm and vim selections are identical outside visual mode.
        var origHead = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.head): cm.getCursor('head'));
        var origAnchor = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.anchor) : cm.getCursor('anchor'));
        var oldHead = copyCursor(origHead);
        var oldAnchor = copyCursor(origAnchor);
        var newHead, newAnchor;
        var repeat;
        if (operator) {
          this.recordLastEdit(vim, inputState);
        }
        if (inputState.repeatOverride !== undefined) {
          // If repeatOverride is specified, that takes precedence over the
          // input state's repeat. Used by Ex mode and can be user defined.
          repeat = inputState.repeatOverride;
        } else {
          repeat = inputState.getRepeat();
        }
        if (repeat > 0 && motionArgs.explicitRepeat) {
          motionArgs.repeatIsExplicit = true;
        } else if (motionArgs.noRepeat ||
            (!motionArgs.explicitRepeat && repeat === 0)) {
          repeat = 1;
          motionArgs.repeatIsExplicit = false;
        }
        if (inputState.selectedCharacter) {
          // If there is a character input, stick it in all of the arg arrays.
          motionArgs.selectedCharacter = operatorArgs.selectedCharacter =
              inputState.selectedCharacter;
        }
        motionArgs.repeat = repeat;
        clearInputState(cm);
        if (motion) {
          var motionResult = motions[motion](cm, origHead, motionArgs, vim);
          vim.lastMotion = motions[motion];
          if (!motionResult) {
            return;
          }
          if (motionArgs.toJumplist) {
            var jumpList = vimGlobalState.jumpList;
            // if the current motion is # or *, use cachedCursor
            var cachedCursor = jumpList.cachedCursor;
            if (cachedCursor) {
              recordJumpPosition(cm, cachedCursor, motionResult);
              delete jumpList.cachedCursor;
            } else {
              recordJumpPosition(cm, origHead, motionResult);
            }
          }
          if (motionResult instanceof Array) {
            newAnchor = motionResult[0];
            newHead = motionResult[1];
          } else {
            newHead = motionResult;
          }
          // TODO: Handle null returns from motion commands better.
          if (!newHead) {
            newHead = copyCursor(origHead);
          }
          if (vim.visualMode) {
            if (!(vim.visualBlock && newHead.ch === Infinity)) {
              newHead = clipCursorToContent(cm, newHead, vim.visualBlock);
            }
            if (newAnchor) {
              newAnchor = clipCursorToContent(cm, newAnchor, true);
            }
            newAnchor = newAnchor || oldAnchor;
            sel.anchor = newAnchor;
            sel.head = newHead;
            updateCmSelection(cm);
            updateMark(cm, vim, '<',
                cursorIsBefore(newAnchor, newHead) ? newAnchor
                    : newHead);
            updateMark(cm, vim, '>',
                cursorIsBefore(newAnchor, newHead) ? newHead
                    : newAnchor);
          } else if (!operator) {
            newHead = clipCursorToContent(cm, newHead);
            cm.setCursor(newHead.line, newHead.ch);
          }
        }
        if (operator) {
          if (operatorArgs.lastSel) {
            // Replaying a visual mode operation
            newAnchor = oldAnchor;
            var lastSel = operatorArgs.lastSel;
            var lineOffset = Math.abs(lastSel.head.line - lastSel.anchor.line);
            var chOffset = Math.abs(lastSel.head.ch - lastSel.anchor.ch);
            if (lastSel.visualLine) {
              // Linewise Visual mode: The same number of lines.
              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch);
            } else if (lastSel.visualBlock) {
              // Blockwise Visual mode: The same number of lines and columns.
              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch + chOffset);
            } else if (lastSel.head.line == lastSel.anchor.line) {
              // Normal Visual mode within one line: The same number of characters.
              newHead = Pos(oldAnchor.line, oldAnchor.ch + chOffset);
            } else {
              // Normal Visual mode with several lines: The same number of lines, in the
              // last line the same number of characters as in the last line the last time.
              newHead = Pos(oldAnchor.line + lineOffset, oldAnchor.ch);
            }
            vim.visualMode = true;
            vim.visualLine = lastSel.visualLine;
            vim.visualBlock = lastSel.visualBlock;
            sel = vim.sel = {
              anchor: newAnchor,
              head: newHead
            };
            updateCmSelection(cm);
          } else if (vim.visualMode) {
            operatorArgs.lastSel = {
              anchor: copyCursor(sel.anchor),
              head: copyCursor(sel.head),
              visualBlock: vim.visualBlock,
              visualLine: vim.visualLine
            };
          }
          var curStart, curEnd, linewise, mode;
          var cmSel;
          if (vim.visualMode) {
            // Init visual op
            curStart = cursorMin(sel.head, sel.anchor);
            curEnd = cursorMax(sel.head, sel.anchor);
            linewise = vim.visualLine || operatorArgs.linewise;
            mode = vim.visualBlock ? 'block' :
                   linewise ? 'line' :
                   'char';
            cmSel = makeCmSelection(cm, {
              anchor: curStart,
              head: curEnd
            }, mode);
            if (linewise) {
              var ranges = cmSel.ranges;
              if (mode == 'block') {
                // Linewise operators in visual block mode extend to end of line
                for (var i = 0; i < ranges.length; i++) {
                  ranges[i].head.ch = lineLength(cm, ranges[i].head.line);
                }
              } else if (mode == 'line') {
                ranges[0].head = Pos(ranges[0].head.line + 1, 0);
              }
            }
          } else {
            // Init motion op
            curStart = copyCursor(newAnchor || oldAnchor);
            curEnd = copyCursor(newHead || oldHead);
            if (cursorIsBefore(curEnd, curStart)) {
              var tmp = curStart;
              curStart = curEnd;
              curEnd = tmp;
            }
            linewise = motionArgs.linewise || operatorArgs.linewise;
            if (linewise) {
              // Expand selection to entire line.
              expandSelectionToLine(cm, curStart, curEnd);
            } else if (motionArgs.forward) {
              // Clip to trailing newlines only if the motion goes forward.
              clipToLine(cm, curStart, curEnd);
            }
            mode = 'char';
            var exclusive = !motionArgs.inclusive || linewise;
            cmSel = makeCmSelection(cm, {
              anchor: curStart,
              head: curEnd
            }, mode, exclusive);
          }
          cm.setSelections(cmSel.ranges, cmSel.primary);
          vim.lastMotion = null;
          operatorArgs.repeat = repeat; // For indent in visual mode.
          operatorArgs.registerName = registerName;
          // Keep track of linewise as it affects how paste and change behave.
          operatorArgs.linewise = linewise;
          var operatorMoveTo = operators[operator](
            cm, operatorArgs, cmSel.ranges, oldAnchor, newHead);
          if (vim.visualMode) {
            exitVisualMode(cm, operatorMoveTo != null);
          }
          if (operatorMoveTo) {
            cm.setCursor(operatorMoveTo);
          }
        }
      },
      recordLastEdit: function(vim, inputState, actionCommand) {
        var macroModeState = vimGlobalState.macroModeState;
        if (macroModeState.isPlaying) { return; }
        vim.lastEditInputState = inputState;
        vim.lastEditActionCommand = actionCommand;
        macroModeState.lastInsertModeChanges.changes = [];
        macroModeState.lastInsertModeChanges.expectCursorActivityForChange = false;
      }
    };

    /**
     * typedef {Object{line:number,ch:number}} Cursor An object containing the
     *     position of the cursor.
     */
    // All of the functions below return Cursor objects.
    var motions = {
      moveToTopLine: function(cm, _head, motionArgs) {
        var line = getUserVisibleLines(cm).top + motionArgs.repeat -1;
        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
      },
      moveToMiddleLine: function(cm) {
        var range = getUserVisibleLines(cm);
        var line = Math.floor((range.top + range.bottom) * 0.5);
        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
      },
      moveToBottomLine: function(cm, _head, motionArgs) {
        var line = getUserVisibleLines(cm).bottom - motionArgs.repeat +1;
        return Pos(line, findFirstNonWhiteSpaceCharacter(cm.getLine(line)));
      },
      expandToLine: function(_cm, head, motionArgs) {
        // Expands forward to end of line, and then to next line if repeat is
        // >1. Does not handle backward motion!
        var cur = head;
        return Pos(cur.line + motionArgs.repeat - 1, Infinity);
      },
      findNext: function(cm, _head, motionArgs) {
        var state = getSearchState(cm);
        var query = state.getQuery();
        if (!query) {
          return;
        }
        var prev = !motionArgs.forward;
        // If search is initiated with ? instead of /, negate direction.
        prev = (state.isReversed()) ? !prev : prev;
        highlightSearchMatches(cm, query);
        return findNext(cm, prev/** prev */, query, motionArgs.repeat);
      },
      goToMark: function(cm, _head, motionArgs, vim) {
        var pos = getMarkPos(cm, vim, motionArgs.selectedCharacter);
        if (pos) {
          return motionArgs.linewise ? { line: pos.line, ch: findFirstNonWhiteSpaceCharacter(cm.getLine(pos.line)) } : pos;
        }
        return null;
      },
      moveToOtherHighlightedEnd: function(cm, _head, motionArgs, vim) {
        if (vim.visualBlock && motionArgs.sameLine) {
          var sel = vim.sel;
          return [
            clipCursorToContent(cm, Pos(sel.anchor.line, sel.head.ch)),
            clipCursorToContent(cm, Pos(sel.head.line, sel.anchor.ch))
          ];
        } else {
          return ([vim.sel.head, vim.sel.anchor]);
        }
      },
      jumpToMark: function(cm, head, motionArgs, vim) {
        var best = head;
        for (var i = 0; i < motionArgs.repeat; i++) {
          var cursor = best;
          for (var key in vim.marks) {
            if (!isLowerCase(key)) {
              continue;
            }
            var mark = vim.marks[key].find();
            var isWrongDirection = (motionArgs.forward) ?
              cursorIsBefore(mark, cursor) : cursorIsBefore(cursor, mark);

            if (isWrongDirection) {
              continue;
            }
            if (motionArgs.linewise && (mark.line == cursor.line)) {
              continue;
            }

            var equal = cursorEqual(cursor, best);
            var between = (motionArgs.forward) ?
              cursorIsBetween(cursor, mark, best) :
              cursorIsBetween(best, mark, cursor);

            if (equal || between) {
              best = mark;
            }
          }
        }

        if (motionArgs.linewise) {
          // Vim places the cursor on the first non-whitespace character of
          // the line if there is one, else it places the cursor at the end
          // of the line, regardless of whether a mark was found.
          best = Pos(best.line, findFirstNonWhiteSpaceCharacter(cm.getLine(best.line)));
        }
        return best;
      },
      moveByCharacters: function(_cm, head, motionArgs) {
        var cur = head;
        var repeat = motionArgs.repeat;
        var ch = motionArgs.forward ? cur.ch + repeat : cur.ch - repeat;
        return Pos(cur.line, ch);
      },
      moveByLines: function(cm, head, motionArgs, vim) {
        var cur = head;
        var endCh = cur.ch;
        // Depending what our last motion was, we may want to do different
        // things. If our last motion was moving vertically, we want to
        // preserve the HPos from our last horizontal move.  If our last motion
        // was going to the end of a line, moving vertically we should go to
        // the end of the line, etc.
        switch (vim.lastMotion) {
          case this.moveByLines:
          case this.moveByDisplayLines:
          case this.moveByScroll:
          case this.moveToColumn:
          case this.moveToEol:
            endCh = vim.lastHPos;
            break;
          default:
            vim.lastHPos = endCh;
        }
        var repeat = motionArgs.repeat+(motionArgs.repeatOffset||0);
        var line = motionArgs.forward ? cur.line + repeat : cur.line - repeat;
        var first = cm.firstLine();
        var last = cm.lastLine();
        // Vim go to line begin or line end when cursor at first/last line and
        // move to previous/next line is triggered.
        if (line < first && cur.line == first){
          return this.moveToStartOfLine(cm, head, motionArgs, vim);
        }else if (line > last && cur.line == last){
            return this.moveToEol(cm, head, motionArgs, vim);
        }
        if (motionArgs.toFirstChar){
          endCh=findFirstNonWhiteSpaceCharacter(cm.getLine(line));
          vim.lastHPos = endCh;
        }
        vim.lastHSPos = cm.charCoords(Pos(line, endCh),'div').left;
        return Pos(line, endCh);
      },
      moveByDisplayLines: function(cm, head, motionArgs, vim) {
        var cur = head;
        switch (vim.lastMotion) {
          case this.moveByDisplayLines:
          case this.moveByScroll:
          case this.moveByLines:
          case this.moveToColumn:
          case this.moveToEol:
            break;
          default:
            vim.lastHSPos = cm.charCoords(cur,'div').left;
        }
        var repeat = motionArgs.repeat;
        var res=cm.findPosV(cur,(motionArgs.forward ? repeat : -repeat),'line',vim.lastHSPos);
        if (res.hitSide) {
          if (motionArgs.forward) {
            var lastCharCoords = cm.charCoords(res, 'div');
            var goalCoords = { top: lastCharCoords.top + 8, left: vim.lastHSPos };
            var res = cm.coordsChar(goalCoords, 'div');
          } else {
            var resCoords = cm.charCoords(Pos(cm.firstLine(), 0), 'div');
            resCoords.left = vim.lastHSPos;
            res = cm.coordsChar(resCoords, 'div');
          }
        }
        vim.lastHPos = res.ch;
        return res;
      },
      moveByPage: function(cm, head, motionArgs) {
        // CodeMirror only exposes functions that move the cursor page down, so
        // doing this bad hack to move the cursor and move it back. evalInput
        // will move the cursor to where it should be in the end.
        var curStart = head;
        var repeat = motionArgs.repeat;
        return cm.findPosV(curStart, (motionArgs.forward ? repeat : -repeat), 'page');
      },
      moveByParagraph: function(cm, head, motionArgs) {
        var dir = motionArgs.forward ? 1 : -1;
        return findParagraph(cm, head, motionArgs.repeat, dir);
      },
      moveBySentence: function(cm, head, motionArgs) {
        var dir = motionArgs.forward ? 1 : -1;
        return findSentence(cm, head, motionArgs.repeat, dir);
      },
      moveByScroll: function(cm, head, motionArgs, vim) {
        var scrollbox = cm.getScrollInfo();
        var curEnd = null;
        var repeat = motionArgs.repeat;
        if (!repeat) {
          repeat = scrollbox.clientHeight / (2 * cm.defaultTextHeight());
        }
        var orig = cm.charCoords(head, 'local');
        motionArgs.repeat = repeat;
        var curEnd = motions.moveByDisplayLines(cm, head, motionArgs, vim);
        if (!curEnd) {
          return null;
        }
        var dest = cm.charCoords(curEnd, 'local');
        cm.scrollTo(null, scrollbox.top + dest.top - orig.top);
        return curEnd;
      },
      moveByWords: function(cm, head, motionArgs) {
        return moveToWord(cm, head, motionArgs.repeat, !!motionArgs.forward,
            !!motionArgs.wordEnd, !!motionArgs.bigWord);
      },
      moveTillCharacter: function(cm, _head, motionArgs) {
        var repeat = motionArgs.repeat;
        var curEnd = moveToCharacter(cm, repeat, motionArgs.forward,
            motionArgs.selectedCharacter);
        var increment = motionArgs.forward ? -1 : 1;
        recordLastCharacterSearch(increment, motionArgs);
        if (!curEnd) return null;
        curEnd.ch += increment;
        return curEnd;
      },
      moveToCharacter: function(cm, head, motionArgs) {
        var repeat = motionArgs.repeat;
        recordLastCharacterSearch(0, motionArgs);
        return moveToCharacter(cm, repeat, motionArgs.forward,
            motionArgs.selectedCharacter) || head;
      },
      moveToSymbol: function(cm, head, motionArgs) {
        var repeat = motionArgs.repeat;
        return findSymbol(cm, repeat, motionArgs.forward,
            motionArgs.selectedCharacter) || head;
      },
      moveToColumn: function(cm, head, motionArgs, vim) {
        var repeat = motionArgs.repeat;
        // repeat is equivalent to which column we want to move to!
        vim.lastHPos = repeat - 1;
        vim.lastHSPos = cm.charCoords(head,'div').left;
        return moveToColumn(cm, repeat);
      },
      moveToEol: function(cm, head, motionArgs, vim) {
        var cur = head;
        vim.lastHPos = Infinity;
        var retval= Pos(cur.line + motionArgs.repeat - 1, Infinity);
        var end=cm.clipPos(retval);
        end.ch--;
        vim.lastHSPos = cm.charCoords(end,'div').left;
        return retval;
      },
      moveToFirstNonWhiteSpaceCharacter: function(cm, head) {
        // Go to the start of the line where the text begins, or the end for
        // whitespace-only lines
        var cursor = head;
        return Pos(cursor.line,
                   findFirstNonWhiteSpaceCharacter(cm.getLine(cursor.line)));
      },
      moveToMatchedSymbol: function(cm, head) {
        var cursor = head;
        var line = cursor.line;
        var ch = cursor.ch;
        var lineText = cm.getLine(line);
        var symbol;
        for (; ch < lineText.length; ch++) {
          symbol = lineText.charAt(ch);
          if (symbol && isMatchableSymbol(symbol)) {
            var style = cm.getTokenTypeAt(Pos(line, ch + 1));
            if (style !== "string" && style !== "comment") {
              break;
            }
          }
        }
        if (ch < lineText.length) {
          // Only include angle brackets in analysis if they are being matched.
          var re = (ch === '<' || ch === '>') ? /[(){}[\]<>]/ : /[(){}[\]]/;
          var matched = cm.findMatchingBracket(Pos(line, ch), {bracketRegex: re});
          return matched.to;
        } else {
          return cursor;
        }
      },
      moveToStartOfLine: function(_cm, head) {
        return Pos(head.line, 0);
      },
      moveToLineOrEdgeOfDocument: function(cm, _head, motionArgs) {
        var lineNum = motionArgs.forward ? cm.lastLine() : cm.firstLine();
        if (motionArgs.repeatIsExplicit) {
          lineNum = motionArgs.repeat - cm.getOption('firstLineNumber');
        }
        return Pos(lineNum,
                   findFirstNonWhiteSpaceCharacter(cm.getLine(lineNum)));
      },
      textObjectManipulation: function(cm, head, motionArgs, vim) {
        // TODO: lots of possible exceptions that can be thrown here. Try da(
        //     outside of a () block.
        var mirroredPairs = {'(': ')', ')': '(',
                             '{': '}', '}': '{',
                             '[': ']', ']': '[',
                             '<': '>', '>': '<'};
        var selfPaired = {'\'': true, '"': true};

        var character = motionArgs.selectedCharacter;
        // 'b' refers to  '()' block.
        // 'B' refers to  '{}' block.
        if (character == 'b') {
          character = '(';
        } else if (character == 'B') {
          character = '{';
        }

        // Inclusive is the difference between a and i
        // TODO: Instead of using the additional text object map to perform text
        //     object operations, merge the map into the defaultKeyMap and use
        //     motionArgs to define behavior. Define separate entries for 'aw',
        //     'iw', 'a[', 'i[', etc.
        var inclusive = !motionArgs.textObjectInner;

        var tmp;
        if (mirroredPairs[character]) {
          tmp = selectCompanionObject(cm, head, character, inclusive);
        } else if (selfPaired[character]) {
          tmp = findBeginningAndEnd(cm, head, character, inclusive);
        } else if (character === 'W') {
          tmp = expandWordUnderCursor(cm, inclusive, true /** forward */,
                                                     true /** bigWord */);
        } else if (character === 'w') {
          tmp = expandWordUnderCursor(cm, inclusive, true /** forward */,
                                                     false /** bigWord */);
        } else if (character === 'p') {
          tmp = findParagraph(cm, head, motionArgs.repeat, 0, inclusive);
          motionArgs.linewise = true;
          if (vim.visualMode) {
            if (!vim.visualLine) { vim.visualLine = true; }
          } else {
            var operatorArgs = vim.inputState.operatorArgs;
            if (operatorArgs) { operatorArgs.linewise = true; }
            tmp.end.line--;
          }
        } else {
          // No text object defined for this, don't move.
          return null;
        }

        if (!cm.state.vim.visualMode) {
          return [tmp.start, tmp.end];
        } else {
          return expandSelection(cm, tmp.start, tmp.end);
        }
      },

      repeatLastCharacterSearch: function(cm, head, motionArgs) {
        var lastSearch = vimGlobalState.lastCharacterSearch;
        var repeat = motionArgs.repeat;
        var forward = motionArgs.forward === lastSearch.forward;
        var increment = (lastSearch.increment ? 1 : 0) * (forward ? -1 : 1);
        cm.moveH(-increment, 'char');
        motionArgs.inclusive = forward ? true : false;
        var curEnd = moveToCharacter(cm, repeat, forward, lastSearch.selectedCharacter);
        if (!curEnd) {
          cm.moveH(increment, 'char');
          return head;
        }
        curEnd.ch += increment;
        return curEnd;
      }
    };

    function defineMotion(name, fn) {
      motions[name] = fn;
    }

    function fillArray(val, times) {
      var arr = [];
      for (var i = 0; i < times; i++) {
        arr.push(val);
      }
      return arr;
    }
    /**
     * An operator acts on a text selection. It receives the list of selections
     * as input. The corresponding CodeMirror selection is guaranteed to
    * match the input selection.
     */
    var operators = {
      change: function(cm, args, ranges) {
        var finalHead, text;
        var vim = cm.state.vim;
        vimGlobalState.macroModeState.lastInsertModeChanges.inVisualBlock = vim.visualBlock;
        if (!vim.visualMode) {
          var anchor = ranges[0].anchor,
              head = ranges[0].head;
          text = cm.getRange(anchor, head);
          var lastState = vim.lastEditInputState || {};
          if (lastState.motion == "moveByWords" && !isWhiteSpaceString(text)) {
            // Exclude trailing whitespace if the range is not all whitespace.
            var match = (/\s+$/).exec(text);
            if (match && lastState.motionArgs && lastState.motionArgs.forward) {
              head = offsetCursor(head, 0, - match[0].length);
              text = text.slice(0, - match[0].length);
            }
          }
          var prevLineEnd = new Pos(anchor.line - 1, Number.MAX_VALUE);
          var wasLastLine = cm.firstLine() == cm.lastLine();
          if (head.line > cm.lastLine() && args.linewise && !wasLastLine) {
            cm.replaceRange('', prevLineEnd, head);
          } else {
            cm.replaceRange('', anchor, head);
          }
          if (args.linewise) {
            // Push the next line back down, if there is a next line.
            if (!wasLastLine) {
              cm.setCursor(prevLineEnd);
              CodeMirror.commands.newlineAndIndent(cm);
            }
            // make sure cursor ends up at the end of the line.
            anchor.ch = Number.MAX_VALUE;
          }
          finalHead = anchor;
        } else {
          text = cm.getSelection();
          var replacement = fillArray('', ranges.length);
          cm.replaceSelections(replacement);
          finalHead = cursorMin(ranges[0].head, ranges[0].anchor);
        }
        vimGlobalState.registerController.pushText(
            args.registerName, 'change', text,
            args.linewise, ranges.length > 1);
        actions.enterInsertMode(cm, {head: finalHead}, cm.state.vim);
      },
      // delete is a javascript keyword.
      'delete': function(cm, args, ranges) {
        var finalHead, text;
        var vim = cm.state.vim;
        if (!vim.visualBlock) {
          var anchor = ranges[0].anchor,
              head = ranges[0].head;
          if (args.linewise &&
              head.line != cm.firstLine() &&
              anchor.line == cm.lastLine() &&
              anchor.line == head.line - 1) {
            // Special case for dd on last line (and first line).
            if (anchor.line == cm.firstLine()) {
              anchor.ch = 0;
            } else {
              anchor = Pos(anchor.line - 1, lineLength(cm, anchor.line - 1));
            }
          }
          text = cm.getRange(anchor, head);
          cm.replaceRange('', anchor, head);
          finalHead = anchor;
          if (args.linewise) {
            finalHead = motions.moveToFirstNonWhiteSpaceCharacter(cm, anchor);
          }
        } else {
          text = cm.getSelection();
          var replacement = fillArray('', ranges.length);
          cm.replaceSelections(replacement);
          finalHead = ranges[0].anchor;
        }
        vimGlobalState.registerController.pushText(
            args.registerName, 'delete', text,
            args.linewise, vim.visualBlock);
        var includeLineBreak = vim.insertMode
        return clipCursorToContent(cm, finalHead, includeLineBreak);
      },
      indent: function(cm, args, ranges) {
        var vim = cm.state.vim;
        var startLine = ranges[0].anchor.line;
        var endLine = vim.visualBlock ?
          ranges[ranges.length - 1].anchor.line :
          ranges[0].head.line;
        // In visual mode, n> shifts the selection right n times, instead of
        // shifting n lines right once.
        var repeat = (vim.visualMode) ? args.repeat : 1;
        if (args.linewise) {
          // The only way to delete a newline is to delete until the start of
          // the next line, so in linewise mode evalInput will include the next
          // line. We don't want this in indent, so we go back a line.
          endLine--;
        }
        for (var i = startLine; i <= endLine; i++) {
          for (var j = 0; j < repeat; j++) {
            cm.indentLine(i, args.indentRight);
          }
        }
        return motions.moveToFirstNonWhiteSpaceCharacter(cm, ranges[0].anchor);
      },
      indentAuto: function(cm, _args, ranges) {
        cm.execCommand("indentAuto");
        return motions.moveToFirstNonWhiteSpaceCharacter(cm, ranges[0].anchor);
      },
      changeCase: function(cm, args, ranges, oldAnchor, newHead) {
        var selections = cm.getSelections();
        var swapped = [];
        var toLower = args.toLower;
        for (var j = 0; j < selections.length; j++) {
          var toSwap = selections[j];
          var text = '';
          if (toLower === true) {
            text = toSwap.toLowerCase();
          } else if (toLower === false) {
            text = toSwap.toUpperCase();
          } else {
            for (var i = 0; i < toSwap.length; i++) {
              var character = toSwap.charAt(i);
              text += isUpperCase(character) ? character.toLowerCase() :
                  character.toUpperCase();
            }
          }
          swapped.push(text);
        }
        cm.replaceSelections(swapped);
        if (args.shouldMoveCursor){
          return newHead;
        } else if (!cm.state.vim.visualMode && args.linewise && ranges[0].anchor.line + 1 == ranges[0].head.line) {
          return motions.moveToFirstNonWhiteSpaceCharacter(cm, oldAnchor);
        } else if (args.linewise){
          return oldAnchor;
        } else {
          return cursorMin(ranges[0].anchor, ranges[0].head);
        }
      },
      yank: function(cm, args, ranges, oldAnchor) {
        var vim = cm.state.vim;
        var text = cm.getSelection();
        var endPos = vim.visualMode
          ? cursorMin(vim.sel.anchor, vim.sel.head, ranges[0].head, ranges[0].anchor)
          : oldAnchor;
        vimGlobalState.registerController.pushText(
            args.registerName, 'yank',
            text, args.linewise, vim.visualBlock);
        return endPos;
      }
    };

    function defineOperator(name, fn) {
      operators[name] = fn;
    }

    var actions = {
      jumpListWalk: function(cm, actionArgs, vim) {
        if (vim.visualMode) {
          return;
        }
        var repeat = actionArgs.repeat;
        var forward = actionArgs.forward;
        var jumpList = vimGlobalState.jumpList;

        var mark = jumpList.move(cm, forward ? repeat : -repeat);
        var markPos = mark ? mark.find() : undefined;
        markPos = markPos ? markPos : cm.getCursor();
        cm.setCursor(markPos);
      },
      scroll: function(cm, actionArgs, vim) {
        if (vim.visualMode) {
          return;
        }
        var repeat = actionArgs.repeat || 1;
        var lineHeight = cm.defaultTextHeight();
        var top = cm.getScrollInfo().top;
        var delta = lineHeight * repeat;
        var newPos = actionArgs.forward ? top + delta : top - delta;
        var cursor = copyCursor(cm.getCursor());
        var cursorCoords = cm.charCoords(cursor, 'local');
        if (actionArgs.forward) {
          if (newPos > cursorCoords.top) {
             cursor.line += (newPos - cursorCoords.top) / lineHeight;
             cursor.line = Math.ceil(cursor.line);
             cm.setCursor(cursor);
             cursorCoords = cm.charCoords(cursor, 'local');
             cm.scrollTo(null, cursorCoords.top);
          } else {
             // Cursor stays within bounds.  Just reposition the scroll window.
             cm.scrollTo(null, newPos);
          }
        } else {
          var newBottom = newPos + cm.getScrollInfo().clientHeight;
          if (newBottom < cursorCoords.bottom) {
             cursor.line -= (cursorCoords.bottom - newBottom) / lineHeight;
             cursor.line = Math.floor(cursor.line);
             cm.setCursor(cursor);
             cursorCoords = cm.charCoords(cursor, 'local');
             cm.scrollTo(
                 null, cursorCoords.bottom - cm.getScrollInfo().clientHeight);
          } else {
             // Cursor stays within bounds.  Just reposition the scroll window.
             cm.scrollTo(null, newPos);
          }
        }
      },
      scrollToCursor: function(cm, actionArgs) {
        var lineNum = cm.getCursor().line;
        var charCoords = cm.charCoords(Pos(lineNum, 0), 'local');
        var height = cm.getScrollInfo().clientHeight;
        var y = charCoords.top;
        var lineHeight = charCoords.bottom - y;
        switch (actionArgs.position) {
          case 'center': y = y - (height / 2) + lineHeight;
            break;
          case 'bottom': y = y - height + lineHeight;
            break;
        }
        cm.scrollTo(null, y);
      },
      replayMacro: function(cm, actionArgs, vim) {
        var registerName = actionArgs.selectedCharacter;
        var repeat = actionArgs.repeat;
        var macroModeState = vimGlobalState.macroModeState;
        if (registerName == '@') {
          registerName = macroModeState.latestRegister;
        }
        while(repeat--){
          executeMacroRegister(cm, vim, macroModeState, registerName);
        }
      },
      enterMacroRecordMode: function(cm, actionArgs) {
        var macroModeState = vimGlobalState.macroModeState;
        var registerName = actionArgs.selectedCharacter;
        if (vimGlobalState.registerController.isValidRegister(registerName)) {
          macroModeState.enterMacroRecordMode(cm, registerName);
        }
      },
      toggleOverwrite: function(cm) {
        if (!cm.state.overwrite) {
          cm.toggleOverwrite(true);
          cm.setOption('keyMap', 'vim-replace');
          CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
        } else {
          cm.toggleOverwrite(false);
          cm.setOption('keyMap', 'vim-insert');
          CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
        }
      },
      enterInsertMode: function(cm, actionArgs, vim) {
        if (cm.getOption('readOnly')) { return; }
        vim.insertMode = true;
        vim.insertModeRepeat = actionArgs && actionArgs.repeat || 1;
        var insertAt = (actionArgs) ? actionArgs.insertAt : null;
        var sel = vim.sel;
        var head = actionArgs.head || cm.getCursor('head');
        var height = cm.listSelections().length;
        if (insertAt == 'eol') {
          head = Pos(head.line, lineLength(cm, head.line));
        } else if (insertAt == 'charAfter') {
          head = offsetCursor(head, 0, 1);
        } else if (insertAt == 'firstNonBlank') {
          head = motions.moveToFirstNonWhiteSpaceCharacter(cm, head);
        } else if (insertAt == 'startOfSelectedArea') {
          if (!vim.visualBlock) {
            if (sel.head.line < sel.anchor.line) {
              head = sel.head;
            } else {
              head = Pos(sel.anchor.line, 0);
            }
          } else {
            head = Pos(
                Math.min(sel.head.line, sel.anchor.line),
                Math.min(sel.head.ch, sel.anchor.ch));
            height = Math.abs(sel.head.line - sel.anchor.line) + 1;
          }
        } else if (insertAt == 'endOfSelectedArea') {
          if (!vim.visualBlock) {
            if (sel.head.line >= sel.anchor.line) {
              head = offsetCursor(sel.head, 0, 1);
            } else {
              head = Pos(sel.anchor.line, 0);
            }
          } else {
            head = Pos(
                Math.min(sel.head.line, sel.anchor.line),
                Math.max(sel.head.ch + 1, sel.anchor.ch));
            height = Math.abs(sel.head.line - sel.anchor.line) + 1;
          }
        } else if (insertAt == 'inplace') {
          if (vim.visualMode){
            return;
          }
        }
        cm.setOption('disableInput', false);
        if (actionArgs && actionArgs.replace) {
          // Handle Replace-mode as a special case of insert mode.
          cm.toggleOverwrite(true);
          cm.setOption('keyMap', 'vim-replace');
          CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
        } else {
          cm.toggleOverwrite(false);
          cm.setOption('keyMap', 'vim-insert');
          CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
        }
        if (!vimGlobalState.macroModeState.isPlaying) {
          // Only record if not replaying.
          cm.on('change', onChange);
          CodeMirror.on(cm.getInputField(), 'keydown', onKeyEventTargetKeyDown);
        }
        if (vim.visualMode) {
          exitVisualMode(cm);
        }
        selectForInsert(cm, head, height);
      },
      toggleVisualMode: function(cm, actionArgs, vim) {
        var repeat = actionArgs.repeat;
        var anchor = cm.getCursor();
        var head;
        // TODO: The repeat should actually select number of characters/lines
        //     equal to the repeat times the size of the previous visual
        //     operation.
        if (!vim.visualMode) {
          // Entering visual mode
          vim.visualMode = true;
          vim.visualLine = !!actionArgs.linewise;
          vim.visualBlock = !!actionArgs.blockwise;
          head = clipCursorToContent(
              cm, Pos(anchor.line, anchor.ch + repeat - 1),
              true /** includeLineBreak */);
          vim.sel = {
            anchor: anchor,
            head: head
          };
          CodeMirror.signal(cm, "vim-mode-change", {mode: "visual", subMode: vim.visualLine ? "linewise" : vim.visualBlock ? "blockwise" : ""});
          updateCmSelection(cm);
          updateMark(cm, vim, '<', cursorMin(anchor, head));
          updateMark(cm, vim, '>', cursorMax(anchor, head));
        } else if (vim.visualLine ^ actionArgs.linewise ||
            vim.visualBlock ^ actionArgs.blockwise) {
          // Toggling between modes
          vim.visualLine = !!actionArgs.linewise;
          vim.visualBlock = !!actionArgs.blockwise;
          CodeMirror.signal(cm, "vim-mode-change", {mode: "visual", subMode: vim.visualLine ? "linewise" : vim.visualBlock ? "blockwise" : ""});
          updateCmSelection(cm);
        } else {
          exitVisualMode(cm);
        }
      },
      reselectLastSelection: function(cm, _actionArgs, vim) {
        var lastSelection = vim.lastSelection;
        if (vim.visualMode) {
          updateLastSelection(cm, vim);
        }
        if (lastSelection) {
          var anchor = lastSelection.anchorMark.find();
          var head = lastSelection.headMark.find();
          if (!anchor || !head) {
            // If the marks have been destroyed due to edits, do nothing.
            return;
          }
          vim.sel = {
            anchor: anchor,
            head: head
          };
          vim.visualMode = true;
          vim.visualLine = lastSelection.visualLine;
          vim.visualBlock = lastSelection.visualBlock;
          updateCmSelection(cm);
          updateMark(cm, vim, '<', cursorMin(anchor, head));
          updateMark(cm, vim, '>', cursorMax(anchor, head));
          CodeMirror.signal(cm, 'vim-mode-change', {
            mode: 'visual',
            subMode: vim.visualLine ? 'linewise' :
                     vim.visualBlock ? 'blockwise' : ''});
        }
      },
      joinLines: function(cm, actionArgs, vim) {
        var curStart, curEnd;
        if (vim.visualMode) {
          curStart = cm.getCursor('anchor');
          curEnd = cm.getCursor('head');
          if (cursorIsBefore(curEnd, curStart)) {
            var tmp = curEnd;
            curEnd = curStart;
            curStart = tmp;
          }
          curEnd.ch = lineLength(cm, curEnd.line) - 1;
        } else {
          // Repeat is the number of lines to join. Minimum 2 lines.
          var repeat = Math.max(actionArgs.repeat, 2);
          curStart = cm.getCursor();
          curEnd = clipCursorToContent(cm, Pos(curStart.line + repeat - 1,
                                               Infinity));
        }
        var finalCh = 0;
        for (var i = curStart.line; i < curEnd.line; i++) {
          finalCh = lineLength(cm, curStart.line);
          var tmp = Pos(curStart.line + 1,
                        lineLength(cm, curStart.line + 1));
          var text = cm.getRange(curStart, tmp);
          text = text.replace(/\n\s*/g, ' ');
          cm.replaceRange(text, curStart, tmp);
        }
        var curFinalPos = Pos(curStart.line, finalCh);
        if (vim.visualMode) {
          exitVisualMode(cm, false);
        }
        cm.setCursor(curFinalPos);
      },
      newLineAndEnterInsertMode: function(cm, actionArgs, vim) {
        vim.insertMode = true;
        var insertAt = copyCursor(cm.getCursor());
        if (insertAt.line === cm.firstLine() && !actionArgs.after) {
          // Special case for inserting newline before start of document.
          cm.replaceRange('\n', Pos(cm.firstLine(), 0));
          cm.setCursor(cm.firstLine(), 0);
        } else {
          insertAt.line = (actionArgs.after) ? insertAt.line :
              insertAt.line - 1;
          insertAt.ch = lineLength(cm, insertAt.line);
          cm.setCursor(insertAt);
          var newlineFn = CodeMirror.commands.newlineAndIndentContinueComment ||
              CodeMirror.commands.newlineAndIndent;
          newlineFn(cm);
        }
        this.enterInsertMode(cm, { repeat: actionArgs.repeat }, vim);
      },
      paste: function(cm, actionArgs, vim) {
        var cur = copyCursor(cm.getCursor());
        var register = vimGlobalState.registerController.getRegister(
            actionArgs.registerName);
        var text = register.toString();
        if (!text) {
          return;
        }
        if (actionArgs.matchIndent) {
          var tabSize = cm.getOption("tabSize");
          // length that considers tabs and tabSize
          var whitespaceLength = function(str) {
            var tabs = (str.split("\t").length - 1);
            var spaces = (str.split(" ").length - 1);
            return tabs * tabSize + spaces * 1;
          };
          var currentLine = cm.getLine(cm.getCursor().line);
          var indent = whitespaceLength(currentLine.match(/^\s*/)[0]);
          // chomp last newline b/c don't want it to match /^\s*/gm
          var chompedText = text.replace(/\n$/, '');
          var wasChomped = text !== chompedText;
          var firstIndent = whitespaceLength(text.match(/^\s*/)[0]);
          var text = chompedText.replace(/^\s*/gm, function(wspace) {
            var newIndent = indent + (whitespaceLength(wspace) - firstIndent);
            if (newIndent < 0) {
              return "";
            }
            else if (cm.getOption("indentWithTabs")) {
              var quotient = Math.floor(newIndent / tabSize);
              return Array(quotient + 1).join('\t');
            }
            else {
              return Array(newIndent + 1).join(' ');
            }
          });
          text += wasChomped ? "\n" : "";
        }
        if (actionArgs.repeat > 1) {
          var text = Array(actionArgs.repeat + 1).join(text);
        }
        var linewise = register.linewise;
        var blockwise = register.blockwise;
        if (linewise) {
          if(vim.visualMode) {
            text = vim.visualLine ? text.slice(0, -1) : '\n' + text.slice(0, text.length - 1) + '\n';
          } else if (actionArgs.after) {
            // Move the newline at the end to the start instead, and paste just
            // before the newline character of the line we are on right now.
            text = '\n' + text.slice(0, text.length - 1);
            cur.ch = lineLength(cm, cur.line);
          } else {
            cur.ch = 0;
          }
        } else {
          if (blockwise) {
            text = text.split('\n');
            for (var i = 0; i < text.length; i++) {
              text[i] = (text[i] == '') ? ' ' : text[i];
            }
          }
          cur.ch += actionArgs.after ? 1 : 0;
        }
        var curPosFinal;
        var idx;
        if (vim.visualMode) {
          //  save the pasted text for reselection if the need arises
          vim.lastPastedText = text;
          var lastSelectionCurEnd;
          var selectedArea = getSelectedAreaRange(cm, vim);
          var selectionStart = selectedArea[0];
          var selectionEnd = selectedArea[1];
          var selectedText = cm.getSelection();
          var selections = cm.listSelections();
          var emptyStrings = new Array(selections.length).join('1').split('1');
          // save the curEnd marker before it get cleared due to cm.replaceRange.
          if (vim.lastSelection) {
            lastSelectionCurEnd = vim.lastSelection.headMark.find();
          }
          // push the previously selected text to unnamed register
          vimGlobalState.registerController.unnamedRegister.setText(selectedText);
          if (blockwise) {
            // first delete the selected text
            cm.replaceSelections(emptyStrings);
            // Set new selections as per the block length of the yanked text
            selectionEnd = Pos(selectionStart.line + text.length-1, selectionStart.ch);
            cm.setCursor(selectionStart);
            selectBlock(cm, selectionEnd);
            cm.replaceSelections(text);
            curPosFinal = selectionStart;
          } else if (vim.visualBlock) {
            cm.replaceSelections(emptyStrings);
            cm.setCursor(selectionStart);
            cm.replaceRange(text, selectionStart, selectionStart);
            curPosFinal = selectionStart;
          } else {
            cm.replaceRange(text, selectionStart, selectionEnd);
            curPosFinal = cm.posFromIndex(cm.indexFromPos(selectionStart) + text.length - 1);
          }
          // restore the the curEnd marker
          if(lastSelectionCurEnd) {
            vim.lastSelection.headMark = cm.setBookmark(lastSelectionCurEnd);
          }
          if (linewise) {
            curPosFinal.ch=0;
          }
        } else {
          if (blockwise) {
            cm.setCursor(cur);
            for (var i = 0; i < text.length; i++) {
              var line = cur.line+i;
              if (line > cm.lastLine()) {
                cm.replaceRange('\n',  Pos(line, 0));
              }
              var lastCh = lineLength(cm, line);
              if (lastCh < cur.ch) {
                extendLineToColumn(cm, line, cur.ch);
              }
            }
            cm.setCursor(cur);
            selectBlock(cm, Pos(cur.line + text.length-1, cur.ch));
            cm.replaceSelections(text);
            curPosFinal = cur;
          } else {
            cm.replaceRange(text, cur);
            // Now fine tune the cursor to where we want it.
            if (linewise && actionArgs.after) {
              curPosFinal = Pos(
              cur.line + 1,
              findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line + 1)));
            } else if (linewise && !actionArgs.after) {
              curPosFinal = Pos(
                cur.line,
                findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line)));
            } else if (!linewise && actionArgs.after) {
              idx = cm.indexFromPos(cur);
              curPosFinal = cm.posFromIndex(idx + text.length - 1);
            } else {
              idx = cm.indexFromPos(cur);
              curPosFinal = cm.posFromIndex(idx + text.length);
            }
          }
        }
        if (vim.visualMode) {
          exitVisualMode(cm, false);
        }
        cm.setCursor(curPosFinal);
      },
      undo: function(cm, actionArgs) {
        cm.operation(function() {
          repeatFn(cm, CodeMirror.commands.undo, actionArgs.repeat)();
          cm.setCursor(cm.getCursor('anchor'));
        });
      },
      redo: function(cm, actionArgs) {
        repeatFn(cm, CodeMirror.commands.redo, actionArgs.repeat)();
      },
      setRegister: function(_cm, actionArgs, vim) {
        vim.inputState.registerName = actionArgs.selectedCharacter;
      },
      setMark: function(cm, actionArgs, vim) {
        var markName = actionArgs.selectedCharacter;
        updateMark(cm, vim, markName, cm.getCursor());
      },
      replace: function(cm, actionArgs, vim) {
        var replaceWith = actionArgs.selectedCharacter;
        var curStart = cm.getCursor();
        var replaceTo;
        var curEnd;
        var selections = cm.listSelections();
        if (vim.visualMode) {
          curStart = cm.getCursor('start');
          curEnd = cm.getCursor('end');
        } else {
          var line = cm.getLine(curStart.line);
          replaceTo = curStart.ch + actionArgs.repeat;
          if (replaceTo > line.length) {
            replaceTo=line.length;
          }
          curEnd = Pos(curStart.line, replaceTo);
        }
        if (replaceWith=='\n') {
          if (!vim.visualMode) cm.replaceRange('', curStart, curEnd);
          // special case, where vim help says to replace by just one line-break
          (CodeMirror.commands.newlineAndIndentContinueComment || CodeMirror.commands.newlineAndIndent)(cm);
        } else {
          var replaceWithStr = cm.getRange(curStart, curEnd);
          //replace all characters in range by selected, but keep linebreaks
          replaceWithStr = replaceWithStr.replace(/[^\n]/g, replaceWith);
          if (vim.visualBlock) {
            // Tabs are split in visua block before replacing
            var spaces = new Array(cm.getOption("tabSize")+1).join(' ');
            replaceWithStr = cm.getSelection();
            replaceWithStr = replaceWithStr.replace(/\t/g, spaces).replace(/[^\n]/g, replaceWith).split('\n');
            cm.replaceSelections(replaceWithStr);
          } else {
            cm.replaceRange(replaceWithStr, curStart, curEnd);
          }
          if (vim.visualMode) {
            curStart = cursorIsBefore(selections[0].anchor, selections[0].head) ?
                         selections[0].anchor : selections[0].head;
            cm.setCursor(curStart);
            exitVisualMode(cm, false);
          } else {
            cm.setCursor(offsetCursor(curEnd, 0, -1));
          }
        }
      },
      incrementNumberToken: function(cm, actionArgs) {
        var cur = cm.getCursor();
        var lineStr = cm.getLine(cur.line);
        var re = /(-?)(?:(0x)([\da-f]+)|(0b|0|)(\d+))/gi;
        var match;
        var start;
        var end;
        var numberStr;
        while ((match = re.exec(lineStr)) !== null) {
          start = match.index;
          end = start + match[0].length;
          if (cur.ch < end)break;
        }
        if (!actionArgs.backtrack && (end <= cur.ch))return;
        if (match) {
          var baseStr = match[2] || match[4]
          var digits = match[3] || match[5]
          var increment = actionArgs.increase ? 1 : -1;
          var base = {'0b': 2, '0': 8, '': 10, '0x': 16}[baseStr.toLowerCase()];
          var number = parseInt(match[1] + digits, base) + (increment * actionArgs.repeat);
          numberStr = number.toString(base);
          var zeroPadding = baseStr ? new Array(digits.length - numberStr.length + 1 + match[1].length).join('0') : ''
          if (numberStr.charAt(0) === '-') {
            numberStr = '-' + baseStr + zeroPadding + numberStr.substr(1);
          } else {
            numberStr = baseStr + zeroPadding + numberStr;
          }
          var from = Pos(cur.line, start);
          var to = Pos(cur.line, end);
          cm.replaceRange(numberStr, from, to);
        } else {
          return;
        }
        cm.setCursor(Pos(cur.line, start + numberStr.length - 1));
      },
      repeatLastEdit: function(cm, actionArgs, vim) {
        var lastEditInputState = vim.lastEditInputState;
        if (!lastEditInputState) { return; }
        var repeat = actionArgs.repeat;
        if (repeat && actionArgs.repeatIsExplicit) {
          vim.lastEditInputState.repeatOverride = repeat;
        } else {
          repeat = vim.lastEditInputState.repeatOverride || repeat;
        }
        repeatLastEdit(cm, vim, repeat, false /** repeatForInsert */);
      },
      indent: function(cm, actionArgs) {
        cm.indentLine(cm.getCursor().line, actionArgs.indentRight);
      },
      exitInsertMode: exitInsertMode
    };

    function defineAction(name, fn) {
      actions[name] = fn;
    }

    /*
     * Below are miscellaneous utility functions used by vim.js
     */

    /**
     * Clips cursor to ensure that line is within the buffer's range
     * If includeLineBreak is true, then allow cur.ch == lineLength.
     */
    function clipCursorToContent(cm, cur, includeLineBreak) {
      var line = Math.min(Math.max(cm.firstLine(), cur.line), cm.lastLine() );
      var maxCh = lineLength(cm, line) - 1;
      maxCh = (includeLineBreak) ? maxCh + 1 : maxCh;
      var ch = Math.min(Math.max(0, cur.ch), maxCh);
      return Pos(line, ch);
    }
    function copyArgs(args) {
      var ret = {};
      for (var prop in args) {
        if (args.hasOwnProperty(prop)) {
          ret[prop] = args[prop];
        }
      }
      return ret;
    }
    function offsetCursor(cur, offsetLine, offsetCh) {
      if (typeof offsetLine === 'object') {
        offsetCh = offsetLine.ch;
        offsetLine = offsetLine.line;
      }
      return Pos(cur.line + offsetLine, cur.ch + offsetCh);
    }
    function getOffset(anchor, head) {
      return {
        line: head.line - anchor.line,
        ch: head.line - anchor.line
      };
    }
    function commandMatches(keys, keyMap, context, inputState) {
      // Partial matches are not applied. They inform the key handler
      // that the current key sequence is a subsequence of a valid key
      // sequence, so that the key buffer is not cleared.
      var match, partial = [], full = [];
      for (var i = 0; i < keyMap.length; i++) {
        var command = keyMap[i];
        if (context == 'insert' && command.context != 'insert' ||
            command.context && command.context != context ||
            inputState.operator && command.type == 'action' ||
            !(match = commandMatch(keys, command.keys))) { continue; }
        if (match == 'partial') { partial.push(command); }
        if (match == 'full') { full.push(command); }
      }
      return {
        partial: partial.length && partial,
        full: full.length && full
      };
    }
    function commandMatch(pressed, mapped) {
      if (mapped.slice(-11) == '<character>') {
        // Last character matches anything.
        var prefixLen = mapped.length - 11;
        var pressedPrefix = pressed.slice(0, prefixLen);
        var mappedPrefix = mapped.slice(0, prefixLen);
        return pressedPrefix == mappedPrefix && pressed.length > prefixLen ? 'full' :
               mappedPrefix.indexOf(pressedPrefix) == 0 ? 'partial' : false;
      } else {
        return pressed == mapped ? 'full' :
               mapped.indexOf(pressed) == 0 ? 'partial' : false;
      }
    }
    function lastChar(keys) {
      var match = /^.*(<[^>]+>)$/.exec(keys);
      var selectedCharacter = match ? match[1] : keys.slice(-1);
      if (selectedCharacter.length > 1){
        switch(selectedCharacter){
          case '<CR>':
            selectedCharacter='\n';
            break;
          case '<Space>':
            selectedCharacter=' ';
            break;
          default:
            selectedCharacter='';
            break;
        }
      }
      return selectedCharacter;
    }
    function repeatFn(cm, fn, repeat) {
      return function() {
        for (var i = 0; i < repeat; i++) {
          fn(cm);
        }
      };
    }
    function copyCursor(cur) {
      return Pos(cur.line, cur.ch);
    }
    function cursorEqual(cur1, cur2) {
      return cur1.ch == cur2.ch && cur1.line == cur2.line;
    }
    function cursorIsBefore(cur1, cur2) {
      if (cur1.line < cur2.line) {
        return true;
      }
      if (cur1.line == cur2.line && cur1.ch < cur2.ch) {
        return true;
      }
      return false;
    }
    function cursorMin(cur1, cur2) {
      if (arguments.length > 2) {
        cur2 = cursorMin.apply(undefined, Array.prototype.slice.call(arguments, 1));
      }
      return cursorIsBefore(cur1, cur2) ? cur1 : cur2;
    }
    function cursorMax(cur1, cur2) {
      if (arguments.length > 2) {
        cur2 = cursorMax.apply(undefined, Array.prototype.slice.call(arguments, 1));
      }
      return cursorIsBefore(cur1, cur2) ? cur2 : cur1;
    }
    function cursorIsBetween(cur1, cur2, cur3) {
      // returns true if cur2 is between cur1 and cur3.
      var cur1before2 = cursorIsBefore(cur1, cur2);
      var cur2before3 = cursorIsBefore(cur2, cur3);
      return cur1before2 && cur2before3;
    }
    function lineLength(cm, lineNum) {
      return cm.getLine(lineNum).length;
    }
    function trim(s) {
      if (s.trim) {
        return s.trim();
      }
      return s.replace(/^\s+|\s+$/g, '');
    }
    function escapeRegex(s) {
      return s.replace(/([.?*+$\[\]\/\\(){}|\-])/g, '\\$1');
    }
    function extendLineToColumn(cm, lineNum, column) {
      var endCh = lineLength(cm, lineNum);
      var spaces = new Array(column-endCh+1).join(' ');
      cm.setCursor(Pos(lineNum, endCh));
      cm.replaceRange(spaces, cm.getCursor());
    }
    // This functions selects a rectangular block
    // of text with selectionEnd as any of its corner
    // Height of block:
    // Difference in selectionEnd.line and first/last selection.line
    // Width of the block:
    // Distance between selectionEnd.ch and any(first considered here) selection.ch
    function selectBlock(cm, selectionEnd) {
      var selections = [], ranges = cm.listSelections();
      var head = copyCursor(cm.clipPos(selectionEnd));
      var isClipped = !cursorEqual(selectionEnd, head);
      var curHead = cm.getCursor('head');
      var primIndex = getIndex(ranges, curHead);
      var wasClipped = cursorEqual(ranges[primIndex].head, ranges[primIndex].anchor);
      var max = ranges.length - 1;
      var index = max - primIndex > primIndex ? max : 0;
      var base = ranges[index].anchor;

      var firstLine = Math.min(base.line, head.line);
      var lastLine = Math.max(base.line, head.line);
      var baseCh = base.ch, headCh = head.ch;

      var dir = ranges[index].head.ch - baseCh;
      var newDir = headCh - baseCh;
      if (dir > 0 && newDir <= 0) {
        baseCh++;
        if (!isClipped) { headCh--; }
      } else if (dir < 0 && newDir >= 0) {
        baseCh--;
        if (!wasClipped) { headCh++; }
      } else if (dir < 0 && newDir == -1) {
        baseCh--;
        headCh++;
      }
      for (var line = firstLine; line <= lastLine; line++) {
        var range = {anchor: new Pos(line, baseCh), head: new Pos(line, headCh)};
        selections.push(range);
      }
      cm.setSelections(selections);
      selectionEnd.ch = headCh;
      base.ch = baseCh;
      return base;
    }
    function selectForInsert(cm, head, height) {
      var sel = [];
      for (var i = 0; i < height; i++) {
        var lineHead = offsetCursor(head, i, 0);
        sel.push({anchor: lineHead, head: lineHead});
      }
      cm.setSelections(sel, 0);
    }
    // getIndex returns the index of the cursor in the selections.
    function getIndex(ranges, cursor, end) {
      for (var i = 0; i < ranges.length; i++) {
        var atAnchor = end != 'head' && cursorEqual(ranges[i].anchor, cursor);
        var atHead = end != 'anchor' && cursorEqual(ranges[i].head, cursor);
        if (atAnchor || atHead) {
          return i;
        }
      }
      return -1;
    }
    function getSelectedAreaRange(cm, vim) {
      var lastSelection = vim.lastSelection;
      var getCurrentSelectedAreaRange = function() {
        var selections = cm.listSelections();
        var start =  selections[0];
        var end = selections[selections.length-1];
        var selectionStart = cursorIsBefore(start.anchor, start.head) ? start.anchor : start.head;
        var selectionEnd = cursorIsBefore(end.anchor, end.head) ? end.head : end.anchor;
        return [selectionStart, selectionEnd];
      };
      var getLastSelectedAreaRange = function() {
        var selectionStart = cm.getCursor();
        var selectionEnd = cm.getCursor();
        var block = lastSelection.visualBlock;
        if (block) {
          var width = block.width;
          var height = block.height;
          selectionEnd = Pos(selectionStart.line + height, selectionStart.ch + width);
          var selections = [];
          // selectBlock creates a 'proper' rectangular block.
          // We do not want that in all cases, so we manually set selections.
          for (var i = selectionStart.line; i < selectionEnd.line; i++) {
            var anchor = Pos(i, selectionStart.ch);
            var head = Pos(i, selectionEnd.ch);
            var range = {anchor: anchor, head: head};
            selections.push(range);
          }
          cm.setSelections(selections);
        } else {
          var start = lastSelection.anchorMark.find();
          var end = lastSelection.headMark.find();
          var line = end.line - start.line;
          var ch = end.ch - start.ch;
          selectionEnd = {line: selectionEnd.line + line, ch: line ? selectionEnd.ch : ch + selectionEnd.ch};
          if (lastSelection.visualLine) {
            selectionStart = Pos(selectionStart.line, 0);
            selectionEnd = Pos(selectionEnd.line, lineLength(cm, selectionEnd.line));
          }
          cm.setSelection(selectionStart, selectionEnd);
        }
        return [selectionStart, selectionEnd];
      };
      if (!vim.visualMode) {
      // In case of replaying the action.
        return getLastSelectedAreaRange();
      } else {
        return getCurrentSelectedAreaRange();
      }
    }
    // Updates the previous selection with the current selection's values. This
    // should only be called in visual mode.
    function updateLastSelection(cm, vim) {
      var anchor = vim.sel.anchor;
      var head = vim.sel.head;
      // To accommodate the effect of lastPastedText in the last selection
      if (vim.lastPastedText) {
        head = cm.posFromIndex(cm.indexFromPos(anchor) + vim.lastPastedText.length);
        vim.lastPastedText = null;
      }
      vim.lastSelection = {'anchorMark': cm.setBookmark(anchor),
                           'headMark': cm.setBookmark(head),
                           'anchor': copyCursor(anchor),
                           'head': copyCursor(head),
                           'visualMode': vim.visualMode,
                           'visualLine': vim.visualLine,
                           'visualBlock': vim.visualBlock};
    }
    function expandSelection(cm, start, end) {
      var sel = cm.state.vim.sel;
      var head = sel.head;
      var anchor = sel.anchor;
      var tmp;
      if (cursorIsBefore(end, start)) {
        tmp = end;
        end = start;
        start = tmp;
      }
      if (cursorIsBefore(head, anchor)) {
        head = cursorMin(start, head);
        anchor = cursorMax(anchor, end);
      } else {
        anchor = cursorMin(start, anchor);
        head = cursorMax(head, end);
        head = offsetCursor(head, 0, -1);
        if (head.ch == -1 && head.line != cm.firstLine()) {
          head = Pos(head.line - 1, lineLength(cm, head.line - 1));
        }
      }
      return [anchor, head];
    }
    /**
     * Updates the CodeMirror selection to match the provided vim selection.
     * If no arguments are given, it uses the current vim selection state.
     */
    function updateCmSelection(cm, sel, mode) {
      var vim = cm.state.vim;
      sel = sel || vim.sel;
      var mode = mode ||
        vim.visualLine ? 'line' : vim.visualBlock ? 'block' : 'char';
      var cmSel = makeCmSelection(cm, sel, mode);
      cm.setSelections(cmSel.ranges, cmSel.primary);
      updateFakeCursor(cm);
    }
    function makeCmSelection(cm, sel, mode, exclusive) {
      var head = copyCursor(sel.head);
      var anchor = copyCursor(sel.anchor);
      if (mode == 'char') {
        var headOffset = !exclusive && !cursorIsBefore(sel.head, sel.anchor) ? 1 : 0;
        var anchorOffset = cursorIsBefore(sel.head, sel.anchor) ? 1 : 0;
        head = offsetCursor(sel.head, 0, headOffset);
        anchor = offsetCursor(sel.anchor, 0, anchorOffset);
        return {
          ranges: [{anchor: anchor, head: head}],
          primary: 0
        };
      } else if (mode == 'line') {
        if (!cursorIsBefore(sel.head, sel.anchor)) {
          anchor.ch = 0;

          var lastLine = cm.lastLine();
          if (head.line > lastLine) {
            head.line = lastLine;
          }
          head.ch = lineLength(cm, head.line);
        } else {
          head.ch = 0;
          anchor.ch = lineLength(cm, anchor.line);
        }
        return {
          ranges: [{anchor: anchor, head: head}],
          primary: 0
        };
      } else if (mode == 'block') {
        var top = Math.min(anchor.line, head.line),
            left = Math.min(anchor.ch, head.ch),
            bottom = Math.max(anchor.line, head.line),
            right = Math.max(anchor.ch, head.ch) + 1;
        var height = bottom - top + 1;
        var primary = head.line == top ? 0 : height - 1;
        var ranges = [];
        for (var i = 0; i < height; i++) {
          ranges.push({
            anchor: Pos(top + i, left),
            head: Pos(top + i, right)
          });
        }
        return {
          ranges: ranges,
          primary: primary
        };
      }
    }
    function getHead(cm) {
      var cur = cm.getCursor('head');
      if (cm.getSelection().length == 1) {
        // Small corner case when only 1 character is selected. The "real"
        // head is the left of head and anchor.
        cur = cursorMin(cur, cm.getCursor('anchor'));
      }
      return cur;
    }

    /**
     * If moveHead is set to false, the CodeMirror selection will not be
     * touched. The caller assumes the responsibility of putting the cursor
    * in the right place.
     */
    function exitVisualMode(cm, moveHead) {
      var vim = cm.state.vim;
      if (moveHead !== false) {
        cm.setCursor(clipCursorToContent(cm, vim.sel.head));
      }
      updateLastSelection(cm, vim);
      vim.visualMode = false;
      vim.visualLine = false;
      vim.visualBlock = false;
      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
      if (vim.fakeCursor) {
        vim.fakeCursor.clear();
      }
    }

    // Remove any trailing newlines from the selection. For
    // example, with the caret at the start of the last word on the line,
    // 'dw' should word, but not the newline, while 'w' should advance the
    // caret to the first character of the next line.
    function clipToLine(cm, curStart, curEnd) {
      var selection = cm.getRange(curStart, curEnd);
      // Only clip if the selection ends with trailing newline + whitespace
      if (/\n\s*$/.test(selection)) {
        var lines = selection.split('\n');
        // We know this is all whitespace.
        lines.pop();

        // Cases:
        // 1. Last word is an empty line - do not clip the trailing '\n'
        // 2. Last word is not an empty line - clip the trailing '\n'
        var line;
        // Find the line containing the last word, and clip all whitespace up
        // to it.
        for (var line = lines.pop(); lines.length > 0 && line && isWhiteSpaceString(line); line = lines.pop()) {
          curEnd.line--;
          curEnd.ch = 0;
        }
        // If the last word is not an empty line, clip an additional newline
        if (line) {
          curEnd.line--;
          curEnd.ch = lineLength(cm, curEnd.line);
        } else {
          curEnd.ch = 0;
        }
      }
    }

    // Expand the selection to line ends.
    function expandSelectionToLine(_cm, curStart, curEnd) {
      curStart.ch = 0;
      curEnd.ch = 0;
      curEnd.line++;
    }

    function findFirstNonWhiteSpaceCharacter(text) {
      if (!text) {
        return 0;
      }
      var firstNonWS = text.search(/\S/);
      return firstNonWS == -1 ? text.length : firstNonWS;
    }

    function expandWordUnderCursor(cm, inclusive, _forward, bigWord, noSymbol) {
      var cur = getHead(cm);
      var line = cm.getLine(cur.line);
      var idx = cur.ch;

      // Seek to first word or non-whitespace character, depending on if
      // noSymbol is true.
      var test = noSymbol ? wordCharTest[0] : bigWordCharTest [0];
      while (!test(line.charAt(idx))) {
        idx++;
        if (idx >= line.length) { return null; }
      }

      if (bigWord) {
        test = bigWordCharTest[0];
      } else {
        test = wordCharTest[0];
        if (!test(line.charAt(idx))) {
          test = wordCharTest[1];
        }
      }

      var end = idx, start = idx;
      while (test(line.charAt(end)) && end < line.length) { end++; }
      while (test(line.charAt(start)) && start >= 0) { start--; }
      start++;

      if (inclusive) {
        // If present, include all whitespace after word.
        // Otherwise, include all whitespace before word, except indentation.
        var wordEnd = end;
        while (/\s/.test(line.charAt(end)) && end < line.length) { end++; }
        if (wordEnd == end) {
          var wordStart = start;
          while (/\s/.test(line.charAt(start - 1)) && start > 0) { start--; }
          if (!start) { start = wordStart; }
        }
      }
      return { start: Pos(cur.line, start), end: Pos(cur.line, end) };
    }

    function recordJumpPosition(cm, oldCur, newCur) {
      if (!cursorEqual(oldCur, newCur)) {
        vimGlobalState.jumpList.add(cm, oldCur, newCur);
      }
    }

    function recordLastCharacterSearch(increment, args) {
        vimGlobalState.lastCharacterSearch.increment = increment;
        vimGlobalState.lastCharacterSearch.forward = args.forward;
        vimGlobalState.lastCharacterSearch.selectedCharacter = args.selectedCharacter;
    }

    var symbolToMode = {
        '(': 'bracket', ')': 'bracket', '{': 'bracket', '}': 'bracket',
        '[': 'section', ']': 'section',
        '*': 'comment', '/': 'comment',
        'm': 'method', 'M': 'method',
        '#': 'preprocess'
    };
    var findSymbolModes = {
      bracket: {
        isComplete: function(state) {
          if (state.nextCh === state.symb) {
            state.depth++;
            if (state.depth >= 1)return true;
          } else if (state.nextCh === state.reverseSymb) {
            state.depth--;
          }
          return false;
        }
      },
      section: {
        init: function(state) {
          state.curMoveThrough = true;
          state.symb = (state.forward ? ']' : '[') === state.symb ? '{' : '}';
        },
        isComplete: function(state) {
          return state.index === 0 && state.nextCh === state.symb;
        }
      },
      comment: {
        isComplete: function(state) {
          var found = state.lastCh === '*' && state.nextCh === '/';
          state.lastCh = state.nextCh;
          return found;
        }
      },
      // TODO: The original Vim implementation only operates on level 1 and 2.
      // The current implementation doesn't check for code block level and
      // therefore it operates on any levels.
      method: {
        init: function(state) {
          state.symb = (state.symb === 'm' ? '{' : '}');
          state.reverseSymb = state.symb === '{' ? '}' : '{';
        },
        isComplete: function(state) {
          if (state.nextCh === state.symb)return true;
          return false;
        }
      },
      preprocess: {
        init: function(state) {
          state.index = 0;
        },
        isComplete: function(state) {
          if (state.nextCh === '#') {
            var token = state.lineText.match(/#(\w+)/)[1];
            if (token === 'endif') {
              if (state.forward && state.depth === 0) {
                return true;
              }
              state.depth++;
            } else if (token === 'if') {
              if (!state.forward && state.depth === 0) {
                return true;
              }
              state.depth--;
            }
            if (token === 'else' && state.depth === 0)return true;
          }
          return false;
        }
      }
    };
    function findSymbol(cm, repeat, forward, symb) {
      var cur = copyCursor(cm.getCursor());
      var increment = forward ? 1 : -1;
      var endLine = forward ? cm.lineCount() : -1;
      var curCh = cur.ch;
      var line = cur.line;
      var lineText = cm.getLine(line);
      var state = {
        lineText: lineText,
        nextCh: lineText.charAt(curCh),
        lastCh: null,
        index: curCh,
        symb: symb,
        reverseSymb: (forward ?  { ')': '(', '}': '{' } : { '(': ')', '{': '}' })[symb],
        forward: forward,
        depth: 0,
        curMoveThrough: false
      };
      var mode = symbolToMode[symb];
      if (!mode)return cur;
      var init = findSymbolModes[mode].init;
      var isComplete = findSymbolModes[mode].isComplete;
      if (init) { init(state); }
      while (line !== endLine && repeat) {
        state.index += increment;
        state.nextCh = state.lineText.charAt(state.index);
        if (!state.nextCh) {
          line += increment;
          state.lineText = cm.getLine(line) || '';
          if (increment > 0) {
            state.index = 0;
          } else {
            var lineLen = state.lineText.length;
            state.index = (lineLen > 0) ? (lineLen-1) : 0;
          }
          state.nextCh = state.lineText.charAt(state.index);
        }
        if (isComplete(state)) {
          cur.line = line;
          cur.ch = state.index;
          repeat--;
        }
      }
      if (state.nextCh || state.curMoveThrough) {
        return Pos(line, state.index);
      }
      return cur;
    }

    /*
     * Returns the boundaries of the next word. If the cursor in the middle of
     * the word, then returns the boundaries of the current word, starting at
     * the cursor. If the cursor is at the start/end of a word, and we are going
     * forward/backward, respectively, find the boundaries of the next word.
     *
     * @param {CodeMirror} cm CodeMirror object.
     * @param {Cursor} cur The cursor position.
     * @param {boolean} forward True to search forward. False to search
     *     backward.
     * @param {boolean} bigWord True if punctuation count as part of the word.
     *     False if only [a-zA-Z0-9] characters count as part of the word.
     * @param {boolean} emptyLineIsWord True if empty lines should be treated
     *     as words.
     * @return {Object{from:number, to:number, line: number}} The boundaries of
     *     the word, or null if there are no more words.
     */
    function findWord(cm, cur, forward, bigWord, emptyLineIsWord) {
      var lineNum = cur.line;
      var pos = cur.ch;
      var line = cm.getLine(lineNum);
      var dir = forward ? 1 : -1;
      var charTests = bigWord ? bigWordCharTest: wordCharTest;

      if (emptyLineIsWord && line == '') {
        lineNum += dir;
        line = cm.getLine(lineNum);
        if (!isLine(cm, lineNum)) {
          return null;
        }
        pos = (forward) ? 0 : line.length;
      }

      while (true) {
        if (emptyLineIsWord && line == '') {
          return { from: 0, to: 0, line: lineNum };
        }
        var stop = (dir > 0) ? line.length : -1;
        var wordStart = stop, wordEnd = stop;
        // Find bounds of next word.
        while (pos != stop) {
          var foundWord = false;
          for (var i = 0; i < charTests.length && !foundWord; ++i) {
            if (charTests[i](line.charAt(pos))) {
              wordStart = pos;
              // Advance to end of word.
              while (pos != stop && charTests[i](line.charAt(pos))) {
                pos += dir;
              }
              wordEnd = pos;
              foundWord = wordStart != wordEnd;
              if (wordStart == cur.ch && lineNum == cur.line &&
                  wordEnd == wordStart + dir) {
                // We started at the end of a word. Find the next one.
                continue;
              } else {
                return {
                  from: Math.min(wordStart, wordEnd + 1),
                  to: Math.max(wordStart, wordEnd),
                  line: lineNum };
              }
            }
          }
          if (!foundWord) {
            pos += dir;
          }
        }
        // Advance to next/prev line.
        lineNum += dir;
        if (!isLine(cm, lineNum)) {
          return null;
        }
        line = cm.getLine(lineNum);
        pos = (dir > 0) ? 0 : line.length;
      }
    }

    /**
     * @param {CodeMirror} cm CodeMirror object.
     * @param {Pos} cur The position to start from.
     * @param {int} repeat Number of words to move past.
     * @param {boolean} forward True to search forward. False to search
     *     backward.
     * @param {boolean} wordEnd True to move to end of word. False to move to
     *     beginning of word.
     * @param {boolean} bigWord True if punctuation count as part of the word.
     *     False if only alphabet characters count as part of the word.
     * @return {Cursor} The position the cursor should move to.
     */
    function moveToWord(cm, cur, repeat, forward, wordEnd, bigWord) {
      var curStart = copyCursor(cur);
      var words = [];
      if (forward && !wordEnd || !forward && wordEnd) {
        repeat++;
      }
      // For 'e', empty lines are not considered words, go figure.
      var emptyLineIsWord = !(forward && wordEnd);
      for (var i = 0; i < repeat; i++) {
        var word = findWord(cm, cur, forward, bigWord, emptyLineIsWord);
        if (!word) {
          var eodCh = lineLength(cm, cm.lastLine());
          words.push(forward
              ? {line: cm.lastLine(), from: eodCh, to: eodCh}
              : {line: 0, from: 0, to: 0});
          break;
        }
        words.push(word);
        cur = Pos(word.line, forward ? (word.to - 1) : word.from);
      }
      var shortCircuit = words.length != repeat;
      var firstWord = words[0];
      var lastWord = words.pop();
      if (forward && !wordEnd) {
        // w
        if (!shortCircuit && (firstWord.from != curStart.ch || firstWord.line != curStart.line)) {
          // We did not start in the middle of a word. Discard the extra word at the end.
          lastWord = words.pop();
        }
        return Pos(lastWord.line, lastWord.from);
      } else if (forward && wordEnd) {
        return Pos(lastWord.line, lastWord.to - 1);
      } else if (!forward && wordEnd) {
        // ge
        if (!shortCircuit && (firstWord.to != curStart.ch || firstWord.line != curStart.line)) {
          // We did not start in the middle of a word. Discard the extra word at the end.
          lastWord = words.pop();
        }
        return Pos(lastWord.line, lastWord.to);
      } else {
        // b
        return Pos(lastWord.line, lastWord.from);
      }
    }

    function moveToCharacter(cm, repeat, forward, character) {
      var cur = cm.getCursor();
      var start = cur.ch;
      var idx;
      for (var i = 0; i < repeat; i ++) {
        var line = cm.getLine(cur.line);
        idx = charIdxInLine(start, line, character, forward, true);
        if (idx == -1) {
          return null;
        }
        start = idx;
      }
      return Pos(cm.getCursor().line, idx);
    }

    function moveToColumn(cm, repeat) {
      // repeat is always >= 1, so repeat - 1 always corresponds
      // to the column we want to go to.
      var line = cm.getCursor().line;
      return clipCursorToContent(cm, Pos(line, repeat - 1));
    }

    function updateMark(cm, vim, markName, pos) {
      if (!inArray(markName, validMarks)) {
        return;
      }
      if (vim.marks[markName]) {
        vim.marks[markName].clear();
      }
      vim.marks[markName] = cm.setBookmark(pos);
    }

    function charIdxInLine(start, line, character, forward, includeChar) {
      // Search for char in line.
      // motion_options: {forward, includeChar}
      // If includeChar = true, include it too.
      // If forward = true, search forward, else search backwards.
      // If char is not found on this line, do nothing
      var idx;
      if (forward) {
        idx = line.indexOf(character, start + 1);
        if (idx != -1 && !includeChar) {
          idx -= 1;
        }
      } else {
        idx = line.lastIndexOf(character, start - 1);
        if (idx != -1 && !includeChar) {
          idx += 1;
        }
      }
      return idx;
    }

    function findParagraph(cm, head, repeat, dir, inclusive) {
      var line = head.line;
      var min = cm.firstLine();
      var max = cm.lastLine();
      var start, end, i = line;
      function isEmpty(i) { return !cm.getLine(i); }
      function isBoundary(i, dir, any) {
        if (any) { return isEmpty(i) != isEmpty(i + dir); }
        return !isEmpty(i) && isEmpty(i + dir);
      }
      if (dir) {
        while (min <= i && i <= max && repeat > 0) {
          if (isBoundary(i, dir)) { repeat--; }
          i += dir;
        }
        return new Pos(i, 0);
      }

      var vim = cm.state.vim;
      if (vim.visualLine && isBoundary(line, 1, true)) {
        var anchor = vim.sel.anchor;
        if (isBoundary(anchor.line, -1, true)) {
          if (!inclusive || anchor.line != line) {
            line += 1;
          }
        }
      }
      var startState = isEmpty(line);
      for (i = line; i <= max && repeat; i++) {
        if (isBoundary(i, 1, true)) {
          if (!inclusive || isEmpty(i) != startState) {
            repeat--;
          }
        }
      }
      end = new Pos(i, 0);
      // select boundary before paragraph for the last one
      if (i > max && !startState) { startState = true; }
      else { inclusive = false; }
      for (i = line; i > min; i--) {
        if (!inclusive || isEmpty(i) == startState || i == line) {
          if (isBoundary(i, -1, true)) { break; }
        }
      }
      start = new Pos(i, 0);
      return { start: start, end: end };
    }

    function findSentence(cm, cur, repeat, dir) {

      /*
        Takes an index object
        {
          line: the line string,
          ln: line number,
          pos: index in line,
          dir: direction of traversal (-1 or 1)
        }
        and modifies the line, ln, and pos members to represent the
        next valid position or sets them to null if there are
        no more valid positions.
       */
      function nextChar(cm, idx) {
        if (idx.pos + idx.dir < 0 || idx.pos + idx.dir >= idx.line.length) {
          idx.ln += idx.dir;
          if (!isLine(cm, idx.ln)) {
            idx.line = null;
            idx.ln = null;
            idx.pos = null;
            return;
          }
          idx.line = cm.getLine(idx.ln);
          idx.pos = (idx.dir > 0) ? 0 : idx.line.length - 1;
        }
        else {
          idx.pos += idx.dir;
        }
      }

      /*
        Performs one iteration of traversal in forward direction
        Returns an index object of the new location
       */
      function forward(cm, ln, pos, dir) {
        var line = cm.getLine(ln);
        var stop = (line === "");

        var curr = {
          line: line,
          ln: ln,
          pos: pos,
          dir: dir,
        }

        var last_valid = {
          ln: curr.ln,
          pos: curr.pos,
        }

        var skip_empty_lines = (curr.line === "");

        // Move one step to skip character we start on
        nextChar(cm, curr);

        while (curr.line !== null) {
          last_valid.ln = curr.ln;
          last_valid.pos = curr.pos;

          if (curr.line === "" && !skip_empty_lines) {
            return { ln: curr.ln, pos: curr.pos, };
          }
          else if (stop && curr.line !== "" && !isWhiteSpaceString(curr.line[curr.pos])) {
            return { ln: curr.ln, pos: curr.pos, };
          }
          else if (isEndOfSentenceSymbol(curr.line[curr.pos])
            && !stop
            && (curr.pos === curr.line.length - 1
              || isWhiteSpaceString(curr.line[curr.pos + 1]))) {
            stop = true;
          }

          nextChar(cm, curr);
        }

        /*
          Set the position to the last non whitespace character on the last
          valid line in the case that we reach the end of the document.
        */
        var line = cm.getLine(last_valid.ln);
        last_valid.pos = 0;
        for(var i = line.length - 1; i >= 0; --i) {
          if (!isWhiteSpaceString(line[i])) {
            last_valid.pos = i;
            break;
          }
        }

        return last_valid;

      }

      /*
        Performs one iteration of traversal in reverse direction
        Returns an index object of the new location
       */
      function reverse(cm, ln, pos, dir) {
        var line = cm.getLine(ln);

        var curr = {
          line: line,
          ln: ln,
          pos: pos,
          dir: dir,
        }

        var last_valid = {
          ln: curr.ln,
          pos: null,
        };

        var skip_empty_lines = (curr.line === "");

        // Move one step to skip character we start on
        nextChar(cm, curr);

        while (curr.line !== null) {

          if (curr.line === "" && !skip_empty_lines) {
            if (last_valid.pos !== null) {
              return last_valid;
            }
            else {
              return { ln: curr.ln, pos: curr.pos };
            }
          }
          else if (isEndOfSentenceSymbol(curr.line[curr.pos])
              && last_valid.pos !== null
              && !(curr.ln === last_valid.ln && curr.pos + 1 === last_valid.pos)) {
            return last_valid;
          }
          else if (curr.line !== "" && !isWhiteSpaceString(curr.line[curr.pos])) {
            skip_empty_lines = false;
            last_valid = { ln: curr.ln, pos: curr.pos }
          }

          nextChar(cm, curr);
        }

        /*
          Set the position to the first non whitespace character on the last
          valid line in the case that we reach the beginning of the document.
        */
        var line = cm.getLine(last_valid.ln);
        last_valid.pos = 0;
        for(var i = 0; i < line.length; ++i) {
          if (!isWhiteSpaceString(line[i])) {
            last_valid.pos = i;
            break;
          }
        }
        return last_valid;
      }

      var curr_index = {
        ln: cur.line,
        pos: cur.ch,
      };

      while (repeat > 0) {
        if (dir < 0) {
          curr_index = reverse(cm, curr_index.ln, curr_index.pos, dir);
        }
        else {
          curr_index = forward(cm, curr_index.ln, curr_index.pos, dir);
        }
        repeat--;
      }

      return Pos(curr_index.ln, curr_index.pos);
    }

    // TODO: perhaps this finagling of start and end positions belonds
    // in codemirror/replaceRange?
    function selectCompanionObject(cm, head, symb, inclusive) {
      var cur = head, start, end;

      var bracketRegexp = ({
        '(': /[()]/, ')': /[()]/,
        '[': /[[\]]/, ']': /[[\]]/,
        '{': /[{}]/, '}': /[{}]/,
        '<': /[<>]/, '>': /[<>]/})[symb];
      var openSym = ({
        '(': '(', ')': '(',
        '[': '[', ']': '[',
        '{': '{', '}': '{',
        '<': '<', '>': '<'})[symb];
      var curChar = cm.getLine(cur.line).charAt(cur.ch);
      // Due to the behavior of scanForBracket, we need to add an offset if the
      // cursor is on a matching open bracket.
      var offset = curChar === openSym ? 1 : 0;

      start = cm.scanForBracket(Pos(cur.line, cur.ch + offset), -1, undefined, {'bracketRegex': bracketRegexp});
      end = cm.scanForBracket(Pos(cur.line, cur.ch + offset), 1, undefined, {'bracketRegex': bracketRegexp});

      if (!start || !end) {
        return { start: cur, end: cur };
      }

      start = start.pos;
      end = end.pos;

      if ((start.line == end.line && start.ch > end.ch)
          || (start.line > end.line)) {
        var tmp = start;
        start = end;
        end = tmp;
      }

      if (inclusive) {
        end.ch += 1;
      } else {
        start.ch += 1;
      }

      return { start: start, end: end };
    }

    // Takes in a symbol and a cursor and tries to simulate text objects that
    // have identical opening and closing symbols
    // TODO support across multiple lines
    function findBeginningAndEnd(cm, head, symb, inclusive) {
      var cur = copyCursor(head);
      var line = cm.getLine(cur.line);
      var chars = line.split('');
      var start, end, i, len;
      var firstIndex = chars.indexOf(symb);

      // the decision tree is to always look backwards for the beginning first,
      // but if the cursor is in front of the first instance of the symb,
      // then move the cursor forward
      if (cur.ch < firstIndex) {
        cur.ch = firstIndex;
        // Why is this line even here???
        // cm.setCursor(cur.line, firstIndex+1);
      }
      // otherwise if the cursor is currently on the closing symbol
      else if (firstIndex < cur.ch && chars[cur.ch] == symb) {
        end = cur.ch; // assign end to the current cursor
        --cur.ch; // make sure to look backwards
      }

      // if we're currently on the symbol, we've got a start
      if (chars[cur.ch] == symb && !end) {
        start = cur.ch + 1; // assign start to ahead of the cursor
      } else {
        // go backwards to find the start
        for (i = cur.ch; i > -1 && !start; i--) {
          if (chars[i] == symb) {
            start = i + 1;
          }
        }
      }

      // look forwards for the end symbol
      if (start && !end) {
        for (i = start, len = chars.length; i < len && !end; i++) {
          if (chars[i] == symb) {
            end = i;
          }
        }
      }

      // nothing found
      if (!start || !end) {
        return { start: cur, end: cur };
      }

      // include the symbols
      if (inclusive) {
        --start; ++end;
      }

      return {
        start: Pos(cur.line, start),
        end: Pos(cur.line, end)
      };
    }

    // Search functions
    defineOption('pcre', true, 'boolean');
    function SearchState() {}
    SearchState.prototype = {
      getQuery: function() {
        return vimGlobalState.query;
      },
      setQuery: function(query) {
        vimGlobalState.query = query;
      },
      getOverlay: function() {
        return this.searchOverlay;
      },
      setOverlay: function(overlay) {
        this.searchOverlay = overlay;
      },
      isReversed: function() {
        return vimGlobalState.isReversed;
      },
      setReversed: function(reversed) {
        vimGlobalState.isReversed = reversed;
      },
      getScrollbarAnnotate: function() {
        return this.annotate;
      },
      setScrollbarAnnotate: function(annotate) {
        this.annotate = annotate;
      }
    };
    function getSearchState(cm) {
      var vim = cm.state.vim;
      return vim.searchState_ || (vim.searchState_ = new SearchState());
    }
    function dialog(cm, template, shortText, onClose, options) {
      if (cm.openDialog) {
        cm.openDialog(template, onClose, { bottom: true, value: options.value,
            onKeyDown: options.onKeyDown, onKeyUp: options.onKeyUp,
            selectValueOnOpen: false});
      }
      else {
        onClose(prompt(shortText, ''));
      }
    }
    function splitBySlash(argString) {
      return splitBySeparator(argString, '/');
    }

    function findUnescapedSlashes(argString) {
      return findUnescapedSeparators(argString, '/');
    }

    function splitBySeparator(argString, separator) {
      var slashes = findUnescapedSeparators(argString, separator) || [];
      if (!slashes.length) return [];
      var tokens = [];
      // in case of strings like foo/bar
      if (slashes[0] !== 0) return;
      for (var i = 0; i < slashes.length; i++) {
        if (typeof slashes[i] == 'number')
          tokens.push(argString.substring(slashes[i] + 1, slashes[i+1]));
      }
      return tokens;
    }

    function findUnescapedSeparators(str, separator) {
      if (!separator)
        separator = '/';

      var escapeNextChar = false;
      var slashes = [];
      for (var i = 0; i < str.length; i++) {
        var c = str.charAt(i);
        if (!escapeNextChar && c == separator) {
          slashes.push(i);
        }
        escapeNextChar = !escapeNextChar && (c == '\\');
      }
      return slashes;
    }

    // Translates a search string from ex (vim) syntax into javascript form.
    function translateRegex(str) {
      // When these match, add a '\' if unescaped or remove one if escaped.
      var specials = '|(){';
      // Remove, but never add, a '\' for these.
      var unescape = '}';
      var escapeNextChar = false;
      var out = [];
      for (var i = -1; i < str.length; i++) {
        var c = str.charAt(i) || '';
        var n = str.charAt(i+1) || '';
        var specialComesNext = (n && specials.indexOf(n) != -1);
        if (escapeNextChar) {
          if (c !== '\\' || !specialComesNext) {
            out.push(c);
          }
          escapeNextChar = false;
        } else {
          if (c === '\\') {
            escapeNextChar = true;
            // Treat the unescape list as special for removing, but not adding '\'.
            if (n && unescape.indexOf(n) != -1) {
              specialComesNext = true;
            }
            // Not passing this test means removing a '\'.
            if (!specialComesNext || n === '\\') {
              out.push(c);
            }
          } else {
            out.push(c);
            if (specialComesNext && n !== '\\') {
              out.push('\\');
            }
          }
        }
      }
      return out.join('');
    }

    // Translates the replace part of a search and replace from ex (vim) syntax into
    // javascript form.  Similar to translateRegex, but additionally fixes back references
    // (translates '\[0..9]' to '$[0..9]') and follows different rules for escaping '$'.
    var charUnescapes = {'\\n': '\n', '\\r': '\r', '\\t': '\t'};
    function translateRegexReplace(str) {
      var escapeNextChar = false;
      var out = [];
      for (var i = -1; i < str.length; i++) {
        var c = str.charAt(i) || '';
        var n = str.charAt(i+1) || '';
        if (charUnescapes[c + n]) {
          out.push(charUnescapes[c+n]);
          i++;
        } else if (escapeNextChar) {
          // At any point in the loop, escapeNextChar is true if the previous
          // character was a '\' and was not escaped.
          out.push(c);
          escapeNextChar = false;
        } else {
          if (c === '\\') {
            escapeNextChar = true;
            if ((isNumber(n) || n === '$')) {
              out.push('$');
            } else if (n !== '/' && n !== '\\') {
              out.push('\\');
            }
          } else {
            if (c === '$') {
              out.push('$');
            }
            out.push(c);
            if (n === '/') {
              out.push('\\');
            }
          }
        }
      }
      return out.join('');
    }

    // Unescape \ and / in the replace part, for PCRE mode.
    var unescapes = {'\\/': '/', '\\\\': '\\', '\\n': '\n', '\\r': '\r', '\\t': '\t'};
    function unescapeRegexReplace(str) {
      var stream = new CodeMirror.StringStream(str);
      var output = [];
      while (!stream.eol()) {
        // Search for \.
        while (stream.peek() && stream.peek() != '\\') {
          output.push(stream.next());
        }
        var matched = false;
        for (var matcher in unescapes) {
          if (stream.match(matcher, true)) {
            matched = true;
            output.push(unescapes[matcher]);
            break;
          }
        }
        if (!matched) {
          // Don't change anything
          output.push(stream.next());
        }
      }
      return output.join('');
    }

    /**
     * Extract the regular expression from the query and return a Regexp object.
     * Returns null if the query is blank.
     * If ignoreCase is passed in, the Regexp object will have the 'i' flag set.
     * If smartCase is passed in, and the query contains upper case letters,
     *   then ignoreCase is overridden, and the 'i' flag will not be set.
     * If the query contains the /i in the flag part of the regular expression,
     *   then both ignoreCase and smartCase are ignored, and 'i' will be passed
     *   through to the Regex object.
     */
    function parseQuery(query, ignoreCase, smartCase) {
      // First update the last search register
      var lastSearchRegister = vimGlobalState.registerController.getRegister('/');
      lastSearchRegister.setText(query);
      // Check if the query is already a regex.
      if (query instanceof RegExp) { return query; }
      // First try to extract regex + flags from the input. If no flags found,
      // extract just the regex. IE does not accept flags directly defined in
      // the regex string in the form /regex/flags
      var slashes = findUnescapedSlashes(query);
      var regexPart;
      var forceIgnoreCase;
      if (!slashes.length) {
        // Query looks like 'regexp'
        regexPart = query;
      } else {
        // Query looks like 'regexp/...'
        regexPart = query.substring(0, slashes[0]);
        var flagsPart = query.substring(slashes[0]);
        forceIgnoreCase = (flagsPart.indexOf('i') != -1);
      }
      if (!regexPart) {
        return null;
      }
      if (!getOption('pcre')) {
        regexPart = translateRegex(regexPart);
      }
      if (smartCase) {
        ignoreCase = (/^[^A-Z]*$/).test(regexPart);
      }
      var regexp = new RegExp(regexPart,
          (ignoreCase || forceIgnoreCase) ? 'i' : undefined);
      return regexp;
    }
    function showConfirm(cm, text) {
      if (cm.openNotification) {
        cm.openNotification('<span style="color: red">' + text + '</span>',
                            {bottom: true, duration: 5000});
      } else {
        alert(text);
      }
    }
    function makePrompt(prefix, desc) {
      var raw = '<span style="font-family: monospace; white-space: pre">' +
          (prefix || "") + '<input type="text"></span>';
      if (desc)
        raw += ' <span style="color: #888">' + desc + '</span>';
      return raw;
    }
    var searchPromptDesc = '(Javascript regexp)';
    function showPrompt(cm, options) {
      var shortText = (options.prefix || '') + ' ' + (options.desc || '');
      var prompt = makePrompt(options.prefix, options.desc);
      dialog(cm, prompt, shortText, options.onClose, options);
    }
    function regexEqual(r1, r2) {
      if (r1 instanceof RegExp && r2 instanceof RegExp) {
          var props = ['global', 'multiline', 'ignoreCase', 'source'];
          for (var i = 0; i < props.length; i++) {
              var prop = props[i];
              if (r1[prop] !== r2[prop]) {
                  return false;
              }
          }
          return true;
      }
      return false;
    }
    // Returns true if the query is valid.
    function updateSearchQuery(cm, rawQuery, ignoreCase, smartCase) {
      if (!rawQuery) {
        return;
      }
      var state = getSearchState(cm);
      var query = parseQuery(rawQuery, !!ignoreCase, !!smartCase);
      if (!query) {
        return;
      }
      highlightSearchMatches(cm, query);
      if (regexEqual(query, state.getQuery())) {
        return query;
      }
      state.setQuery(query);
      return query;
    }
    function searchOverlay(query) {
      if (query.source.charAt(0) == '^') {
        var matchSol = true;
      }
      return {
        token: function(stream) {
          if (matchSol && !stream.sol()) {
            stream.skipToEnd();
            return;
          }
          var match = stream.match(query, false);
          if (match) {
            if (match[0].length == 0) {
              // Matched empty string, skip to next.
              stream.next();
              return 'searching';
            }
            if (!stream.sol()) {
              // Backtrack 1 to match \b
              stream.backUp(1);
              if (!query.exec(stream.next() + match[0])) {
                stream.next();
                return null;
              }
            }
            stream.match(query);
            return 'searching';
          }
          while (!stream.eol()) {
            stream.next();
            if (stream.match(query, false)) break;
          }
        },
        query: query
      };
    }
    function highlightSearchMatches(cm, query) {
      var searchState = getSearchState(cm);
      var overlay = searchState.getOverlay();
      if (!overlay || query != overlay.query) {
        if (overlay) {
          cm.removeOverlay(overlay);
        }
        overlay = searchOverlay(query);
        cm.addOverlay(overlay);
        if (cm.showMatchesOnScrollbar) {
          if (searchState.getScrollbarAnnotate()) {
            searchState.getScrollbarAnnotate().clear();
          }
          searchState.setScrollbarAnnotate(cm.showMatchesOnScrollbar(query));
        }
        searchState.setOverlay(overlay);
      }
    }
    function findNext(cm, prev, query, repeat) {
      if (repeat === undefined) { repeat = 1; }
      return cm.operation(function() {
        var pos = cm.getCursor();
        var cursor = cm.getSearchCursor(query, pos);
        for (var i = 0; i < repeat; i++) {
          var found = cursor.find(prev);
          if (i == 0 && found && cursorEqual(cursor.from(), pos)) { found = cursor.find(prev); }
          if (!found) {
            // SearchCursor may have returned null because it hit EOF, wrap
            // around and try again.
            cursor = cm.getSearchCursor(query,
                (prev) ? Pos(cm.lastLine()) : Pos(cm.firstLine(), 0) );
            if (!cursor.find(prev)) {
              return;
            }
          }
        }
        return cursor.from();
      });
    }
    function clearSearchHighlight(cm) {
      var state = getSearchState(cm);
      cm.removeOverlay(getSearchState(cm).getOverlay());
      state.setOverlay(null);
      if (state.getScrollbarAnnotate()) {
        state.getScrollbarAnnotate().clear();
        state.setScrollbarAnnotate(null);
      }
    }
    /**
     * Check if pos is in the specified range, INCLUSIVE.
     * Range can be specified with 1 or 2 arguments.
     * If the first range argument is an array, treat it as an array of line
     * numbers. Match pos against any of the lines.
     * If the first range argument is a number,
     *   if there is only 1 range argument, check if pos has the same line
     *       number
     *   if there are 2 range arguments, then check if pos is in between the two
     *       range arguments.
     */
    function isInRange(pos, start, end) {
      if (typeof pos != 'number') {
        // Assume it is a cursor position. Get the line number.
        pos = pos.line;
      }
      if (start instanceof Array) {
        return inArray(pos, start);
      } else {
        if (end) {
          return (pos >= start && pos <= end);
        } else {
          return pos == start;
        }
      }
    }
    function getUserVisibleLines(cm) {
      var scrollInfo = cm.getScrollInfo();
      var occludeToleranceTop = 6;
      var occludeToleranceBottom = 10;
      var from = cm.coordsChar({left:0, top: occludeToleranceTop + scrollInfo.top}, 'local');
      var bottomY = scrollInfo.clientHeight - occludeToleranceBottom + scrollInfo.top;
      var to = cm.coordsChar({left:0, top: bottomY}, 'local');
      return {top: from.line, bottom: to.line};
    }

    function getMarkPos(cm, vim, markName) {
      if (markName == '\'') {
        var history = cm.doc.history.done;
        var event = history[history.length - 2];
        return event && event.ranges && event.ranges[0].head;
      } else if (markName == '.') {
        if (cm.doc.history.lastModTime == 0) {
          return  // If no changes, bail out; don't bother to copy or reverse history array.
        } else {
          var changeHistory = cm.doc.history.done.filter(function(el){ if (el.changes !== undefined) { return el } });
          changeHistory.reverse();
          var lastEditPos = changeHistory[0].changes[0].to;
        }
        return lastEditPos;
      }

      var mark = vim.marks[markName];
      return mark && mark.find();
    }

    var ExCommandDispatcher = function() {
      this.buildCommandMap_();
    };
    ExCommandDispatcher.prototype = {
      processCommand: function(cm, input, opt_params) {
        var that = this;
        cm.operation(function () {
          cm.curOp.isVimOp = true;
          that._processCommand(cm, input, opt_params);
        });
      },
      _processCommand: function(cm, input, opt_params) {
        var vim = cm.state.vim;
        var commandHistoryRegister = vimGlobalState.registerController.getRegister(':');
        var previousCommand = commandHistoryRegister.toString();
        if (vim.visualMode) {
          exitVisualMode(cm);
        }
        var inputStream = new CodeMirror.StringStream(input);
        // update ": with the latest command whether valid or invalid
        commandHistoryRegister.setText(input);
        var params = opt_params || {};
        params.input = input;
        try {
          this.parseInput_(cm, inputStream, params);
        } catch(e) {
          showConfirm(cm, e);
          throw e;
        }
        var command;
        var commandName;
        if (!params.commandName) {
          // If only a line range is defined, move to the line.
          if (params.line !== undefined) {
            commandName = 'move';
          }
        } else {
          command = this.matchCommand_(params.commandName);
          if (command) {
            commandName = command.name;
            if (command.excludeFromCommandHistory) {
              commandHistoryRegister.setText(previousCommand);
            }
            this.parseCommandArgs_(inputStream, params, command);
            if (command.type == 'exToKey') {
              // Handle Ex to Key mapping.
              for (var i = 0; i < command.toKeys.length; i++) {
                CodeMirror.Vim.handleKey(cm, command.toKeys[i], 'mapping');
              }
              return;
            } else if (command.type == 'exToEx') {
              // Handle Ex to Ex mapping.
              this.processCommand(cm, command.toInput);
              return;
            }
          }
        }
        if (!commandName) {
          showConfirm(cm, 'Not an editor command ":' + input + '"');
          return;
        }
        try {
          exCommands[commandName](cm, params);
          // Possibly asynchronous commands (e.g. substitute, which might have a
          // user confirmation), are responsible for calling the callback when
          // done. All others have it taken care of for them here.
          if ((!command || !command.possiblyAsync) && params.callback) {
            params.callback();
          }
        } catch(e) {
          showConfirm(cm, e);
          throw e;
        }
      },
      parseInput_: function(cm, inputStream, result) {
        inputStream.eatWhile(':');
        // Parse range.
        if (inputStream.eat('%')) {
          result.line = cm.firstLine();
          result.lineEnd = cm.lastLine();
        } else {
          result.line = this.parseLineSpec_(cm, inputStream);
          if (result.line !== undefined && inputStream.eat(',')) {
            result.lineEnd = this.parseLineSpec_(cm, inputStream);
          }
        }

        // Parse command name.
        var commandMatch = inputStream.match(/^(\w+)/);
        if (commandMatch) {
          result.commandName = commandMatch[1];
        } else {
          result.commandName = inputStream.match(/.*/)[0];
        }

        return result;
      },
      parseLineSpec_: function(cm, inputStream) {
        var numberMatch = inputStream.match(/^(\d+)/);
        if (numberMatch) {
          // Absolute line number plus offset (N+M or N-M) is probably a typo,
          // not something the user actually wanted. (NB: vim does allow this.)
          return parseInt(numberMatch[1], 10) - 1;
        }
        switch (inputStream.next()) {
          case '.':
            return this.parseLineSpecOffset_(inputStream, cm.getCursor().line);
          case '$':
            return this.parseLineSpecOffset_(inputStream, cm.lastLine());
          case '\'':
            var markName = inputStream.next();
            var markPos = getMarkPos(cm, cm.state.vim, markName);
            if (!markPos) throw new Error('Mark not set');
            return this.parseLineSpecOffset_(inputStream, markPos.line);
          case '-':
          case '+':
            inputStream.backUp(1);
            // Offset is relative to current line if not otherwise specified.
            return this.parseLineSpecOffset_(inputStream, cm.getCursor().line);
          default:
            inputStream.backUp(1);
            return undefined;
        }
      },
      parseLineSpecOffset_: function(inputStream, line) {
        var offsetMatch = inputStream.match(/^([+-])?(\d+)/);
        if (offsetMatch) {
          var offset = parseInt(offsetMatch[2], 10);
          if (offsetMatch[1] == "-") {
            line -= offset;
          } else {
            line += offset;
          }
        }
        return line;
      },
      parseCommandArgs_: function(inputStream, params, command) {
        if (inputStream.eol()) {
          return;
        }
        params.argString = inputStream.match(/.*/)[0];
        // Parse command-line arguments
        var delim = command.argDelimiter || /\s+/;
        var args = trim(params.argString).split(delim);
        if (args.length && args[0]) {
          params.args = args;
        }
      },
      matchCommand_: function(commandName) {
        // Return the command in the command map that matches the shortest
        // prefix of the passed in command name. The match is guaranteed to be
        // unambiguous if the defaultExCommandMap's shortNames are set up
        // correctly. (see @code{defaultExCommandMap}).
        for (var i = commandName.length; i > 0; i--) {
          var prefix = commandName.substring(0, i);
          if (this.commandMap_[prefix]) {
            var command = this.commandMap_[prefix];
            if (command.name.indexOf(commandName) === 0) {
              return command;
            }
          }
        }
        return null;
      },
      buildCommandMap_: function() {
        this.commandMap_ = {};
        for (var i = 0; i < defaultExCommandMap.length; i++) {
          var command = defaultExCommandMap[i];
          var key = command.shortName || command.name;
          this.commandMap_[key] = command;
        }
      },
      map: function(lhs, rhs, ctx) {
        if (lhs != ':' && lhs.charAt(0) == ':') {
          if (ctx) { throw Error('Mode not supported for ex mappings'); }
          var commandName = lhs.substring(1);
          if (rhs != ':' && rhs.charAt(0) == ':') {
            // Ex to Ex mapping
            this.commandMap_[commandName] = {
              name: commandName,
              type: 'exToEx',
              toInput: rhs.substring(1),
              user: true
            };
          } else {
            // Ex to key mapping
            this.commandMap_[commandName] = {
              name: commandName,
              type: 'exToKey',
              toKeys: rhs,
              user: true
            };
          }
        } else {
          if (rhs != ':' && rhs.charAt(0) == ':') {
            // Key to Ex mapping.
            var mapping = {
              keys: lhs,
              type: 'keyToEx',
              exArgs: { input: rhs.substring(1) }
            };
            if (ctx) { mapping.context = ctx; }
            defaultKeymap.unshift(mapping);
          } else {
            // Key to key mapping
            var mapping = {
              keys: lhs,
              type: 'keyToKey',
              toKeys: rhs
            };
            if (ctx) { mapping.context = ctx; }
            defaultKeymap.unshift(mapping);
          }
        }
      },
      unmap: function(lhs, ctx) {
        if (lhs != ':' && lhs.charAt(0) == ':') {
          // Ex to Ex or Ex to key mapping
          if (ctx) { throw Error('Mode not supported for ex mappings'); }
          var commandName = lhs.substring(1);
          if (this.commandMap_[commandName] && this.commandMap_[commandName].user) {
            delete this.commandMap_[commandName];
            return;
          }
        } else {
          // Key to Ex or key to key mapping
          var keys = lhs;
          for (var i = 0; i < defaultKeymap.length; i++) {
            if (keys == defaultKeymap[i].keys
                && defaultKeymap[i].context === ctx) {
              defaultKeymap.splice(i, 1);
              return;
            }
          }
        }
        throw Error('No such mapping.');
      }
    };

    var exCommands = {
      colorscheme: function(cm, params) {
        if (!params.args || params.args.length < 1) {
          showConfirm(cm, cm.getOption('theme'));
          return;
        }
        cm.setOption('theme', params.args[0]);
      },
      map: function(cm, params, ctx) {
        var mapArgs = params.args;
        if (!mapArgs || mapArgs.length < 2) {
          if (cm) {
            showConfirm(cm, 'Invalid mapping: ' + params.input);
          }
          return;
        }
        exCommandDispatcher.map(mapArgs[0], mapArgs[1], ctx);
      },
      imap: function(cm, params) { this.map(cm, params, 'insert'); },
      nmap: function(cm, params) { this.map(cm, params, 'normal'); },
      vmap: function(cm, params) { this.map(cm, params, 'visual'); },
      unmap: function(cm, params, ctx) {
        var mapArgs = params.args;
        if (!mapArgs || mapArgs.length < 1) {
          if (cm) {
            showConfirm(cm, 'No such mapping: ' + params.input);
          }
          return;
        }
        exCommandDispatcher.unmap(mapArgs[0], ctx);
      },
      move: function(cm, params) {
        commandDispatcher.processCommand(cm, cm.state.vim, {
            type: 'motion',
            motion: 'moveToLineOrEdgeOfDocument',
            motionArgs: { forward: false, explicitRepeat: true,
              linewise: true },
            repeatOverride: params.line+1});
      },
      set: function(cm, params) {
        var setArgs = params.args;
        // Options passed through to the setOption/getOption calls. May be passed in by the
        // local/global versions of the set command
        var setCfg = params.setCfg || {};
        if (!setArgs || setArgs.length < 1) {
          if (cm) {
            showConfirm(cm, 'Invalid mapping: ' + params.input);
          }
          return;
        }
        var expr = setArgs[0].split('=');
        var optionName = expr[0];
        var value = expr[1];
        var forceGet = false;

        if (optionName.charAt(optionName.length - 1) == '?') {
          // If post-fixed with ?, then the set is actually a get.
          if (value) { throw Error('Trailing characters: ' + params.argString); }
          optionName = optionName.substring(0, optionName.length - 1);
          forceGet = true;
        }
        if (value === undefined && optionName.substring(0, 2) == 'no') {
          // To set boolean options to false, the option name is prefixed with
          // 'no'.
          optionName = optionName.substring(2);
          value = false;
        }

        var optionIsBoolean = options[optionName] && options[optionName].type == 'boolean';
        if (optionIsBoolean && value == undefined) {
          // Calling set with a boolean option sets it to true.
          value = true;
        }
        // If no value is provided, then we assume this is a get.
        if (!optionIsBoolean && value === undefined || forceGet) {
          var oldValue = getOption(optionName, cm, setCfg);
          if (oldValue instanceof Error) {
            showConfirm(cm, oldValue.message);
          } else if (oldValue === true || oldValue === false) {
            showConfirm(cm, ' ' + (oldValue ? '' : 'no') + optionName);
          } else {
            showConfirm(cm, '  ' + optionName + '=' + oldValue);
          }
        } else {
          var setOptionReturn = setOption(optionName, value, cm, setCfg);
          if (setOptionReturn instanceof Error) {
            showConfirm(cm, setOptionReturn.message);
          }
        }
      },
      setlocal: function (cm, params) {
        // setCfg is passed through to setOption
        params.setCfg = {scope: 'local'};
        this.set(cm, params);
      },
      setglobal: function (cm, params) {
        // setCfg is passed through to setOption
        params.setCfg = {scope: 'global'};
        this.set(cm, params);
      },
      registers: function(cm, params) {
        var regArgs = params.args;
        var registers = vimGlobalState.registerController.registers;
        var regInfo = '----------Registers----------<br><br>';
        if (!regArgs) {
          for (var registerName in registers) {
            var text = registers[registerName].toString();
            if (text.length) {
              regInfo += '"' + registerName + '    ' + text + '<br>';
            }
          }
        } else {
          var registerName;
          regArgs = regArgs.join('');
          for (var i = 0; i < regArgs.length; i++) {
            registerName = regArgs.charAt(i);
            if (!vimGlobalState.registerController.isValidRegister(registerName)) {
              continue;
            }
            var register = registers[registerName] || new Register();
            regInfo += '"' + registerName + '    ' + register.toString() + '<br>';
          }
        }
        showConfirm(cm, regInfo);
      },
      sort: function(cm, params) {
        var reverse, ignoreCase, unique, number, pattern;
        function parseArgs() {
          if (params.argString) {
            var args = new CodeMirror.StringStream(params.argString);
            if (args.eat('!')) { reverse = true; }
            if (args.eol()) { return; }
            if (!args.eatSpace()) { return 'Invalid arguments'; }
            var opts = args.match(/([dinuox]+)?\s*(\/.+\/)?\s*/);
            if (!opts && !args.eol()) { return 'Invalid arguments'; }
            if (opts[1]) {
              ignoreCase = opts[1].indexOf('i') != -1;
              unique = opts[1].indexOf('u') != -1;
              var decimal = opts[1].indexOf('d') != -1 || opts[1].indexOf('n') != -1 && 1;
              var hex = opts[1].indexOf('x') != -1 && 1;
              var octal = opts[1].indexOf('o') != -1 && 1;
              if (decimal + hex + octal > 1) { return 'Invalid arguments'; }
              number = decimal && 'decimal' || hex && 'hex' || octal && 'octal';
            }
            if (opts[2]) {
              pattern = new RegExp(opts[2].substr(1, opts[2].length - 2), ignoreCase ? 'i' : '');
            }
          }
        }
        var err = parseArgs();
        if (err) {
          showConfirm(cm, err + ': ' + params.argString);
          return;
        }
        var lineStart = params.line || cm.firstLine();
        var lineEnd = params.lineEnd || params.line || cm.lastLine();
        if (lineStart == lineEnd) { return; }
        var curStart = Pos(lineStart, 0);
        var curEnd = Pos(lineEnd, lineLength(cm, lineEnd));
        var text = cm.getRange(curStart, curEnd).split('\n');
        var numberRegex = pattern ? pattern :
           (number == 'decimal') ? /(-?)([\d]+)/ :
           (number == 'hex') ? /(-?)(?:0x)?([0-9a-f]+)/i :
           (number == 'octal') ? /([0-7]+)/ : null;
        var radix = (number == 'decimal') ? 10 : (number == 'hex') ? 16 : (number == 'octal') ? 8 : null;
        var numPart = [], textPart = [];
        if (number || pattern) {
          for (var i = 0; i < text.length; i++) {
            var matchPart = pattern ? text[i].match(pattern) : null;
            if (matchPart && matchPart[0] != '') {
              numPart.push(matchPart);
            } else if (!pattern && numberRegex.exec(text[i])) {
              numPart.push(text[i]);
            } else {
              textPart.push(text[i]);
            }
          }
        } else {
          textPart = text;
        }
        function compareFn(a, b) {
          if (reverse) { var tmp; tmp = a; a = b; b = tmp; }
          if (ignoreCase) { a = a.toLowerCase(); b = b.toLowerCase(); }
          var anum = number && numberRegex.exec(a);
          var bnum = number && numberRegex.exec(b);
          if (!anum) { return a < b ? -1 : 1; }
          anum = parseInt((anum[1] + anum[2]).toLowerCase(), radix);
          bnum = parseInt((bnum[1] + bnum[2]).toLowerCase(), radix);
          return anum - bnum;
        }
        function comparePatternFn(a, b) {
          if (reverse) { var tmp; tmp = a; a = b; b = tmp; }
          if (ignoreCase) { a[0] = a[0].toLowerCase(); b[0] = b[0].toLowerCase(); }
          return (a[0] < b[0]) ? -1 : 1;
        }
        numPart.sort(pattern ? comparePatternFn : compareFn);
        if (pattern) {
          for (var i = 0; i < numPart.length; i++) {
            numPart[i] = numPart[i].input;
          }
        } else if (!number) { textPart.sort(compareFn); }
        text = (!reverse) ? textPart.concat(numPart) : numPart.concat(textPart);
        if (unique) { // Remove duplicate lines
          var textOld = text;
          var lastLine;
          text = [];
          for (var i = 0; i < textOld.length; i++) {
            if (textOld[i] != lastLine) {
              text.push(textOld[i]);
            }
            lastLine = textOld[i];
          }
        }
        cm.replaceRange(text.join('\n'), curStart, curEnd);
      },
      global: function(cm, params) {
        // a global command is of the form
        // :[range]g/pattern/[cmd]
        // argString holds the string /pattern/[cmd]
        var argString = params.argString;
        if (!argString) {
          showConfirm(cm, 'Regular Expression missing from global');
          return;
        }
        // range is specified here
        var lineStart = (params.line !== undefined) ? params.line : cm.firstLine();
        var lineEnd = params.lineEnd || params.line || cm.lastLine();
        // get the tokens from argString
        var tokens = splitBySlash(argString);
        var regexPart = argString, cmd;
        if (tokens.length) {
          regexPart = tokens[0];
          cmd = tokens.slice(1, tokens.length).join('/');
        }
        if (regexPart) {
          // If regex part is empty, then use the previous query. Otherwise
          // use the regex part as the new query.
          try {
           updateSearchQuery(cm, regexPart, true /** ignoreCase */,
             true /** smartCase */);
          } catch (e) {
           showConfirm(cm, 'Invalid regex: ' + regexPart);
           return;
          }
        }
        // now that we have the regexPart, search for regex matches in the
        // specified range of lines
        var query = getSearchState(cm).getQuery();
        var matchedLines = [], content = '';
        for (var i = lineStart; i <= lineEnd; i++) {
          var matched = query.test(cm.getLine(i));
          if (matched) {
            matchedLines.push(i+1);
            content+= cm.getLine(i) + '<br>';
          }
        }
        // if there is no [cmd], just display the list of matched lines
        if (!cmd) {
          showConfirm(cm, content);
          return;
        }
        var index = 0;
        var nextCommand = function() {
          if (index < matchedLines.length) {
            var command = matchedLines[index] + cmd;
            exCommandDispatcher.processCommand(cm, command, {
              callback: nextCommand
            });
          }
          index++;
        };
        nextCommand();
      },
      substitute: function(cm, params) {
        if (!cm.getSearchCursor) {
          throw new Error('Search feature not available. Requires searchcursor.js or ' +
              'any other getSearchCursor implementation.');
        }
        var argString = params.argString;
        var tokens = argString ? splitBySeparator(argString, argString[0]) : [];
        var regexPart, replacePart = '', trailing, flagsPart, count;
        var confirm = false; // Whether to confirm each replace.
        var global = false; // True to replace all instances on a line, false to replace only 1.
        if (tokens.length) {
          regexPart = tokens[0];
          replacePart = tokens[1];
          if (regexPart && regexPart[regexPart.length - 1] === '$') {
            regexPart = regexPart.slice(0, regexPart.length - 1) + '\\n';
            replacePart = replacePart ? replacePart + '\n' : '\n';
          }
          if (replacePart !== undefined) {
            if (getOption('pcre')) {
              replacePart = unescapeRegexReplace(replacePart);
            } else {
              replacePart = translateRegexReplace(replacePart);
            }
            vimGlobalState.lastSubstituteReplacePart = replacePart;
          }
          trailing = tokens[2] ? tokens[2].split(' ') : [];
        } else {
          // either the argString is empty or its of the form ' hello/world'
          // actually splitBySlash returns a list of tokens
          // only if the string starts with a '/'
          if (argString && argString.length) {
            showConfirm(cm, 'Substitutions should be of the form ' +
                ':s/pattern/replace/');
            return;
          }
        }
        // After the 3rd slash, we can have flags followed by a space followed
        // by count.
        if (trailing) {
          flagsPart = trailing[0];
          count = parseInt(trailing[1]);
          if (flagsPart) {
            if (flagsPart.indexOf('c') != -1) {
              confirm = true;
              flagsPart.replace('c', '');
            }
            if (flagsPart.indexOf('g') != -1) {
              global = true;
              flagsPart.replace('g', '');
            }
            regexPart = regexPart.replace(/\//g, "\\/") + '/' + flagsPart;
          }
        }
        if (regexPart) {
          // If regex part is empty, then use the previous query. Otherwise use
          // the regex part as the new query.
          try {
            updateSearchQuery(cm, regexPart, true /** ignoreCase */,
              true /** smartCase */);
          } catch (e) {
            showConfirm(cm, 'Invalid regex: ' + regexPart);
            return;
          }
        }
        replacePart = replacePart || vimGlobalState.lastSubstituteReplacePart;
        if (replacePart === undefined) {
          showConfirm(cm, 'No previous substitute regular expression');
          return;
        }
        var state = getSearchState(cm);
        var query = state.getQuery();
        var lineStart = (params.line !== undefined) ? params.line : cm.getCursor().line;
        var lineEnd = params.lineEnd || lineStart;
        if (lineStart == cm.firstLine() && lineEnd == cm.lastLine()) {
          lineEnd = Infinity;
        }
        if (count) {
          lineStart = lineEnd;
          lineEnd = lineStart + count - 1;
        }
        var startPos = clipCursorToContent(cm, Pos(lineStart, 0));
        var cursor = cm.getSearchCursor(query, startPos);
        doReplace(cm, confirm, global, lineStart, lineEnd, cursor, query, replacePart, params.callback);
      },
      redo: CodeMirror.commands.redo,
      undo: CodeMirror.commands.undo,
      write: function(cm) {
        if (CodeMirror.commands.save) {
          // If a save command is defined, call it.
          CodeMirror.commands.save(cm);
        } else if (cm.save) {
          // Saves to text area if no save command is defined and cm.save() is available.
          cm.save();
        }
      },
      nohlsearch: function(cm) {
        clearSearchHighlight(cm);
      },
      yank: function (cm) {
        var cur = copyCursor(cm.getCursor());
        var line = cur.line;
        var lineText = cm.getLine(line);
        vimGlobalState.registerController.pushText(
          '0', 'yank', lineText, true, true);
      },
      delmarks: function(cm, params) {
        if (!params.argString || !trim(params.argString)) {
          showConfirm(cm, 'Argument required');
          return;
        }

        var state = cm.state.vim;
        var stream = new CodeMirror.StringStream(trim(params.argString));
        while (!stream.eol()) {
          stream.eatSpace();

          // Record the streams position at the beginning of the loop for use
          // in error messages.
          var count = stream.pos;

          if (!stream.match(/[a-zA-Z]/, false)) {
            showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
            return;
          }

          var sym = stream.next();
          // Check if this symbol is part of a range
          if (stream.match('-', true)) {
            // This symbol is part of a range.

            // The range must terminate at an alphabetic character.
            if (!stream.match(/[a-zA-Z]/, false)) {
              showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
              return;
            }

            var startMark = sym;
            var finishMark = stream.next();
            // The range must terminate at an alphabetic character which
            // shares the same case as the start of the range.
            if (isLowerCase(startMark) && isLowerCase(finishMark) ||
                isUpperCase(startMark) && isUpperCase(finishMark)) {
              var start = startMark.charCodeAt(0);
              var finish = finishMark.charCodeAt(0);
              if (start >= finish) {
                showConfirm(cm, 'Invalid argument: ' + params.argString.substring(count));
                return;
              }

              // Because marks are always ASCII values, and we have
              // determined that they are the same case, we can use
              // their char codes to iterate through the defined range.
              for (var j = 0; j <= finish - start; j++) {
                var mark = String.fromCharCode(start + j);
                delete state.marks[mark];
              }
            } else {
              showConfirm(cm, 'Invalid argument: ' + startMark + '-');
              return;
            }
          } else {
            // This symbol is a valid mark, and is not part of a range.
            delete state.marks[sym];
          }
        }
      }
    };

    var exCommandDispatcher = new ExCommandDispatcher();

    /**
    * @param {CodeMirror} cm CodeMirror instance we are in.
    * @param {boolean} confirm Whether to confirm each replace.
    * @param {Cursor} lineStart Line to start replacing from.
    * @param {Cursor} lineEnd Line to stop replacing at.
    * @param {RegExp} query Query for performing matches with.
    * @param {string} replaceWith Text to replace matches with. May contain $1,
    *     $2, etc for replacing captured groups using Javascript replace.
    * @param {function()} callback A callback for when the replace is done.
    */
    function doReplace(cm, confirm, global, lineStart, lineEnd, searchCursor, query,
        replaceWith, callback) {
      // Set up all the functions.
      cm.state.vim.exMode = true;
      var done = false;
      var lastPos = searchCursor.from();
      function replaceAll() {
        cm.operation(function() {
          while (!done) {
            replace();
            next();
          }
          stop();
        });
      }
      function replace() {
        var text = cm.getRange(searchCursor.from(), searchCursor.to());
        var newText = text.replace(query, replaceWith);
        searchCursor.replace(newText);
      }
      function next() {
        // The below only loops to skip over multiple occurrences on the same
        // line when 'global' is not true.
        while(searchCursor.findNext() &&
              isInRange(searchCursor.from(), lineStart, lineEnd)) {
          if (!global && lastPos && searchCursor.from().line == lastPos.line) {
            continue;
          }
          cm.scrollIntoView(searchCursor.from(), 30);
          cm.setSelection(searchCursor.from(), searchCursor.to());
          lastPos = searchCursor.from();
          done = false;
          return;
        }
        done = true;
      }
      function stop(close) {
        if (close) { close(); }
        cm.focus();
        if (lastPos) {
          cm.setCursor(lastPos);
          var vim = cm.state.vim;
          vim.exMode = false;
          vim.lastHPos = vim.lastHSPos = lastPos.ch;
        }
        if (callback) { callback(); }
      }
      function onPromptKeyDown(e, _value, close) {
        // Swallow all keys.
        CodeMirror.e_stop(e);
        var keyName = CodeMirror.keyName(e);
        switch (keyName) {
          case 'Y':
            replace(); next(); break;
          case 'N':
            next(); break;
          case 'A':
            // replaceAll contains a call to close of its own. We don't want it
            // to fire too early or multiple times.
            var savedCallback = callback;
            callback = undefined;
            cm.operation(replaceAll);
            callback = savedCallback;
            break;
          case 'L':
            replace();
            // fall through and exit.
          case 'Q':
          case 'Esc':
          case 'Ctrl-C':
          case 'Ctrl-[':
            stop(close);
            break;
        }
        if (done) { stop(close); }
        return true;
      }

      // Actually do replace.
      next();
      if (done) {
        showConfirm(cm, 'No matches for ' + query.source);
        return;
      }
      if (!confirm) {
        replaceAll();
        if (callback) { callback(); }
        return;
      }
      showPrompt(cm, {
        prefix: 'replace with <strong>' + replaceWith + '</strong> (y/n/a/q/l)',
        onKeyDown: onPromptKeyDown
      });
    }

    CodeMirror.keyMap.vim = {
      attach: attachVimMap,
      detach: detachVimMap,
      call: cmKey
    };

    function exitInsertMode(cm) {
      var vim = cm.state.vim;
      var macroModeState = vimGlobalState.macroModeState;
      var insertModeChangeRegister = vimGlobalState.registerController.getRegister('.');
      var isPlaying = macroModeState.isPlaying;
      var lastChange = macroModeState.lastInsertModeChanges;
      if (!isPlaying) {
        cm.off('change', onChange);
        CodeMirror.off(cm.getInputField(), 'keydown', onKeyEventTargetKeyDown);
      }
      if (!isPlaying && vim.insertModeRepeat > 1) {
        // Perform insert mode repeat for commands like 3,a and 3,o.
        repeatLastEdit(cm, vim, vim.insertModeRepeat - 1,
            true /** repeatForInsert */);
        vim.lastEditInputState.repeatOverride = vim.insertModeRepeat;
      }
      delete vim.insertModeRepeat;
      vim.insertMode = false;
      cm.setCursor(cm.getCursor().line, cm.getCursor().ch-1);
      cm.setOption('keyMap', 'vim');
      cm.setOption('disableInput', true);
      cm.toggleOverwrite(false); // exit replace mode if we were in it.
      // update the ". register before exiting insert mode
      insertModeChangeRegister.setText(lastChange.changes.join(''));
      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
      if (macroModeState.isRecording) {
        logInsertModeChange(macroModeState);
      }
    }

    function _mapCommand(command) {
      defaultKeymap.unshift(command);
    }

    function mapCommand(keys, type, name, args, extra) {
      var command = {keys: keys, type: type};
      command[type] = name;
      command[type + "Args"] = args;
      for (var key in extra)
        command[key] = extra[key];
      _mapCommand(command);
    }

    // The timeout in milliseconds for the two-character ESC keymap should be
    // adjusted according to your typing speed to prevent false positives.
    defineOption('insertModeEscKeysTimeout', 200, 'number');

    CodeMirror.keyMap['vim-insert'] = {
      // TODO: override navigation keys so that Esc will cancel automatic
      // indentation from o, O, i_<CR>
      fallthrough: ['default'],
      attach: attachVimMap,
      detach: detachVimMap,
      call: cmKey
    };

    CodeMirror.keyMap['vim-replace'] = {
      'Backspace': 'goCharLeft',
      fallthrough: ['vim-insert'],
      attach: attachVimMap,
      detach: detachVimMap,
      call: cmKey
    };

    function executeMacroRegister(cm, vim, macroModeState, registerName) {
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (registerName == ':') {
        // Read-only register containing last Ex command.
        if (register.keyBuffer[0]) {
          exCommandDispatcher.processCommand(cm, register.keyBuffer[0]);
        }
        macroModeState.isPlaying = false;
        return;
      }
      var keyBuffer = register.keyBuffer;
      var imc = 0;
      macroModeState.isPlaying = true;
      macroModeState.replaySearchQueries = register.searchQueries.slice(0);
      for (var i = 0; i < keyBuffer.length; i++) {
        var text = keyBuffer[i];
        var match, key;
        while (text) {
          // Pull off one command key, which is either a single character
          // or a special sequence wrapped in '<' and '>', e.g. '<Space>'.
          match = (/<\w+-.+?>|<\w+>|./).exec(text);
          key = match[0];
          text = text.substring(match.index + key.length);
          CodeMirror.Vim.handleKey(cm, key, 'macro');
          if (vim.insertMode) {
            var changes = register.insertModeChanges[imc++].changes;
            vimGlobalState.macroModeState.lastInsertModeChanges.changes =
                changes;
            repeatInsertModeChanges(cm, changes, 1);
            exitInsertMode(cm);
          }
        }
      }
      macroModeState.isPlaying = false;
    }

    function logKey(macroModeState, key) {
      if (macroModeState.isPlaying) { return; }
      var registerName = macroModeState.latestRegister;
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (register) {
        register.pushText(key);
      }
    }

    function logInsertModeChange(macroModeState) {
      if (macroModeState.isPlaying) { return; }
      var registerName = macroModeState.latestRegister;
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (register && register.pushInsertModeChanges) {
        register.pushInsertModeChanges(macroModeState.lastInsertModeChanges);
      }
    }

    function logSearchQuery(macroModeState, query) {
      if (macroModeState.isPlaying) { return; }
      var registerName = macroModeState.latestRegister;
      var register = vimGlobalState.registerController.getRegister(registerName);
      if (register && register.pushSearchQuery) {
        register.pushSearchQuery(query);
      }
    }

    /**
     * Listens for changes made in insert mode.
     * Should only be active in insert mode.
     */
    function onChange(cm, changeObj) {
      var macroModeState = vimGlobalState.macroModeState;
      var lastChange = macroModeState.lastInsertModeChanges;
      if (!macroModeState.isPlaying) {
        while(changeObj) {
          lastChange.expectCursorActivityForChange = true;
          if (lastChange.ignoreCount > 1) {
            lastChange.ignoreCount--;
          } else if (changeObj.origin == '+input' || changeObj.origin == 'paste'
              || changeObj.origin === undefined /* only in testing */) {
            var selectionCount = cm.listSelections().length;
            if (selectionCount > 1)
              lastChange.ignoreCount = selectionCount;
            var text = changeObj.text.join('\n');
            if (lastChange.maybeReset) {
              lastChange.changes = [];
              lastChange.maybeReset = false;
            }
            if (text) {
              if (cm.state.overwrite && !/\n/.test(text)) {
                lastChange.changes.push([text]);
              } else {
                lastChange.changes.push(text);
              }
            }
          }
          // Change objects may be chained with next.
          changeObj = changeObj.next;
        }
      }
    }

    /**
    * Listens for any kind of cursor activity on CodeMirror.
    */
    function onCursorActivity(cm) {
      var vim = cm.state.vim;
      if (vim.insertMode) {
        // Tracking cursor activity in insert mode (for macro support).
        var macroModeState = vimGlobalState.macroModeState;
        if (macroModeState.isPlaying) { return; }
        var lastChange = macroModeState.lastInsertModeChanges;
        if (lastChange.expectCursorActivityForChange) {
          lastChange.expectCursorActivityForChange = false;
        } else {
          // Cursor moved outside the context of an edit. Reset the change.
          lastChange.maybeReset = true;
        }
      } else if (!cm.curOp.isVimOp) {
        handleExternalSelection(cm, vim);
      }
      if (vim.visualMode) {
        updateFakeCursor(cm);
      }
    }
    function updateFakeCursor(cm) {
      var vim = cm.state.vim;
      var from = clipCursorToContent(cm, copyCursor(vim.sel.head));
      var to = offsetCursor(from, 0, 1);
      if (vim.fakeCursor) {
        vim.fakeCursor.clear();
      }
      vim.fakeCursor = cm.markText(from, to, {className: 'cm-animate-fat-cursor'});
    }
    function handleExternalSelection(cm, vim) {
      var anchor = cm.getCursor('anchor');
      var head = cm.getCursor('head');
      // Enter or exit visual mode to match mouse selection.
      if (vim.visualMode && !cm.somethingSelected()) {
        exitVisualMode(cm, false);
      } else if (!vim.visualMode && !vim.insertMode && cm.somethingSelected()) {
        vim.visualMode = true;
        vim.visualLine = false;
        CodeMirror.signal(cm, "vim-mode-change", {mode: "visual"});
      }
      if (vim.visualMode) {
        // Bind CodeMirror selection model to vim selection model.
        // Mouse selections are considered visual characterwise.
        var headOffset = !cursorIsBefore(head, anchor) ? -1 : 0;
        var anchorOffset = cursorIsBefore(head, anchor) ? -1 : 0;
        head = offsetCursor(head, 0, headOffset);
        anchor = offsetCursor(anchor, 0, anchorOffset);
        vim.sel = {
          anchor: anchor,
          head: head
        };
        updateMark(cm, vim, '<', cursorMin(head, anchor));
        updateMark(cm, vim, '>', cursorMax(head, anchor));
      } else if (!vim.insertMode) {
        // Reset lastHPos if selection was modified by something outside of vim mode e.g. by mouse.
        vim.lastHPos = cm.getCursor().ch;
      }
    }

    /** Wrapper for special keys pressed in insert mode */
    function InsertModeKey(keyName) {
      this.keyName = keyName;
    }

    /**
    * Handles raw key down events from the text area.
    * - Should only be active in insert mode.
    * - For recording deletes in insert mode.
    */
    function onKeyEventTargetKeyDown(e) {
      var macroModeState = vimGlobalState.macroModeState;
      var lastChange = macroModeState.lastInsertModeChanges;
      var keyName = CodeMirror.keyName(e);
      if (!keyName) { return; }
      function onKeyFound() {
        if (lastChange.maybeReset) {
          lastChange.changes = [];
          lastChange.maybeReset = false;
        }
        lastChange.changes.push(new InsertModeKey(keyName));
        return true;
      }
      if (keyName.indexOf('Delete') != -1 || keyName.indexOf('Backspace') != -1) {
        CodeMirror.lookupKey(keyName, 'vim-insert', onKeyFound);
      }
    }

    /**
     * Repeats the last edit, which includes exactly 1 command and at most 1
     * insert. Operator and motion commands are read from lastEditInputState,
     * while action commands are read from lastEditActionCommand.
     *
     * If repeatForInsert is true, then the function was called by
     * exitInsertMode to repeat the insert mode changes the user just made. The
     * corresponding enterInsertMode call was made with a count.
     */
    function repeatLastEdit(cm, vim, repeat, repeatForInsert) {
      var macroModeState = vimGlobalState.macroModeState;
      macroModeState.isPlaying = true;
      var isAction = !!vim.lastEditActionCommand;
      var cachedInputState = vim.inputState;
      function repeatCommand() {
        if (isAction) {
          commandDispatcher.processAction(cm, vim, vim.lastEditActionCommand);
        } else {
          commandDispatcher.evalInput(cm, vim);
        }
      }
      function repeatInsert(repeat) {
        if (macroModeState.lastInsertModeChanges.changes.length > 0) {
          // For some reason, repeat cw in desktop VIM does not repeat
          // insert mode changes. Will conform to that behavior.
          repeat = !vim.lastEditActionCommand ? 1 : repeat;
          var changeObject = macroModeState.lastInsertModeChanges;
          repeatInsertModeChanges(cm, changeObject.changes, repeat);
        }
      }
      vim.inputState = vim.lastEditInputState;
      if (isAction && vim.lastEditActionCommand.interlaceInsertRepeat) {
        // o and O repeat have to be interlaced with insert repeats so that the
        // insertions appear on separate lines instead of the last line.
        for (var i = 0; i < repeat; i++) {
          repeatCommand();
          repeatInsert(1);
        }
      } else {
        if (!repeatForInsert) {
          // Hack to get the cursor to end up at the right place. If I is
          // repeated in insert mode repeat, cursor will be 1 insert
          // change set left of where it should be.
          repeatCommand();
        }
        repeatInsert(repeat);
      }
      vim.inputState = cachedInputState;
      if (vim.insertMode && !repeatForInsert) {
        // Don't exit insert mode twice. If repeatForInsert is set, then we
        // were called by an exitInsertMode call lower on the stack.
        exitInsertMode(cm);
      }
      macroModeState.isPlaying = false;
    }

    function repeatInsertModeChanges(cm, changes, repeat) {
      function keyHandler(binding) {
        if (typeof binding == 'string') {
          CodeMirror.commands[binding](cm);
        } else {
          binding(cm);
        }
        return true;
      }
      var head = cm.getCursor('head');
      var inVisualBlock = vimGlobalState.macroModeState.lastInsertModeChanges.inVisualBlock;
      if (inVisualBlock) {
        // Set up block selection again for repeating the changes.
        var vim = cm.state.vim;
        var lastSel = vim.lastSelection;
        var offset = getOffset(lastSel.anchor, lastSel.head);
        selectForInsert(cm, head, offset.line + 1);
        repeat = cm.listSelections().length;
        cm.setCursor(head);
      }
      for (var i = 0; i < repeat; i++) {
        if (inVisualBlock) {
          cm.setCursor(offsetCursor(head, i, 0));
        }
        for (var j = 0; j < changes.length; j++) {
          var change = changes[j];
          if (change instanceof InsertModeKey) {
            CodeMirror.lookupKey(change.keyName, 'vim-insert', keyHandler);
          } else if (typeof change == "string") {
            var cur = cm.getCursor();
            cm.replaceRange(change, cur, cur);
          } else {
            var start = cm.getCursor();
            var end = offsetCursor(start, 0, change[0].length);
            cm.replaceRange(change[0], start, end);
          }
        }
      }
      if (inVisualBlock) {
        cm.setCursor(offsetCursor(head, 0, 1));
      }
    }

    resetVimGlobalState();
    return vimApi;
  };
  // Initialize Vim and make it available as an API.
  CodeMirror.Vim = Vim();
});
/* --------------------------------------------------------------
         js/libs/acorn/acorn.js
   -------------------------------------------------------------- */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.acorn = {}));
})(this, (function (exports) { 'use strict';

  // This file was generated. Do not modify manually!
  var astralIdentifierCodes = [509, 0, 227, 0, 150, 4, 294, 9, 1368, 2, 2, 1, 6, 3, 41, 2, 5, 0, 166, 1, 574, 3, 9, 9, 370, 1, 81, 2, 71, 10, 50, 3, 123, 2, 54, 14, 32, 10, 3, 1, 11, 3, 46, 10, 8, 0, 46, 9, 7, 2, 37, 13, 2, 9, 6, 1, 45, 0, 13, 2, 49, 13, 9, 3, 2, 11, 83, 11, 7, 0, 3, 0, 158, 11, 6, 9, 7, 3, 56, 1, 2, 6, 3, 1, 3, 2, 10, 0, 11, 1, 3, 6, 4, 4, 193, 17, 10, 9, 5, 0, 82, 19, 13, 9, 214, 6, 3, 8, 28, 1, 83, 16, 16, 9, 82, 12, 9, 9, 84, 14, 5, 9, 243, 14, 166, 9, 71, 5, 2, 1, 3, 3, 2, 0, 2, 1, 13, 9, 120, 6, 3, 6, 4, 0, 29, 9, 41, 6, 2, 3, 9, 0, 10, 10, 47, 15, 406, 7, 2, 7, 17, 9, 57, 21, 2, 13, 123, 5, 4, 0, 2, 1, 2, 6, 2, 0, 9, 9, 49, 4, 2, 1, 2, 4, 9, 9, 330, 3, 10, 1, 2, 0, 49, 6, 4, 4, 14, 9, 5351, 0, 7, 14, 13835, 9, 87, 9, 39, 4, 60, 6, 26, 9, 1014, 0, 2, 54, 8, 3, 82, 0, 12, 1, 19628, 1, 4706, 45, 3, 22, 543, 4, 4, 5, 9, 7, 3, 6, 31, 3, 149, 2, 1418, 49, 513, 54, 5, 49, 9, 0, 15, 0, 23, 4, 2, 14, 1361, 6, 2, 16, 3, 6, 2, 1, 2, 4, 101, 0, 161, 6, 10, 9, 357, 0, 62, 13, 499, 13, 983, 6, 110, 6, 6, 9, 4759, 9, 787719, 239];

  // This file was generated. Do not modify manually!
  var astralIdentifierStartCodes = [0, 11, 2, 25, 2, 18, 2, 1, 2, 14, 3, 13, 35, 122, 70, 52, 268, 28, 4, 48, 48, 31, 14, 29, 6, 37, 11, 29, 3, 35, 5, 7, 2, 4, 43, 157, 19, 35, 5, 35, 5, 39, 9, 51, 13, 10, 2, 14, 2, 6, 2, 1, 2, 10, 2, 14, 2, 6, 2, 1, 68, 310, 10, 21, 11, 7, 25, 5, 2, 41, 2, 8, 70, 5, 3, 0, 2, 43, 2, 1, 4, 0, 3, 22, 11, 22, 10, 30, 66, 18, 2, 1, 11, 21, 11, 25, 71, 55, 7, 1, 65, 0, 16, 3, 2, 2, 2, 28, 43, 28, 4, 28, 36, 7, 2, 27, 28, 53, 11, 21, 11, 18, 14, 17, 111, 72, 56, 50, 14, 50, 14, 35, 349, 41, 7, 1, 79, 28, 11, 0, 9, 21, 43, 17, 47, 20, 28, 22, 13, 52, 58, 1, 3, 0, 14, 44, 33, 24, 27, 35, 30, 0, 3, 0, 9, 34, 4, 0, 13, 47, 15, 3, 22, 0, 2, 0, 36, 17, 2, 24, 20, 1, 64, 6, 2, 0, 2, 3, 2, 14, 2, 9, 8, 46, 39, 7, 3, 1, 3, 21, 2, 6, 2, 1, 2, 4, 4, 0, 19, 0, 13, 4, 159, 52, 19, 3, 21, 2, 31, 47, 21, 1, 2, 0, 185, 46, 42, 3, 37, 47, 21, 0, 60, 42, 14, 0, 72, 26, 38, 6, 186, 43, 117, 63, 32, 7, 3, 0, 3, 7, 2, 1, 2, 23, 16, 0, 2, 0, 95, 7, 3, 38, 17, 0, 2, 0, 29, 0, 11, 39, 8, 0, 22, 0, 12, 45, 20, 0, 19, 72, 264, 8, 2, 36, 18, 0, 50, 29, 113, 6, 2, 1, 2, 37, 22, 0, 26, 5, 2, 1, 2, 31, 15, 0, 328, 18, 16, 0, 2, 12, 2, 33, 125, 0, 80, 921, 103, 110, 18, 195, 2637, 96, 16, 1071, 18, 5, 4026, 582, 8634, 568, 8, 30, 18, 78, 18, 29, 19, 47, 17, 3, 32, 20, 6, 18, 689, 63, 129, 74, 6, 0, 67, 12, 65, 1, 2, 0, 29, 6135, 9, 1237, 43, 8, 8936, 3, 2, 6, 2, 1, 2, 290, 16, 0, 30, 2, 3, 0, 15, 3, 9, 395, 2309, 106, 6, 12, 4, 8, 8, 9, 5991, 84, 2, 70, 2, 1, 3, 0, 3, 1, 3, 3, 2, 11, 2, 0, 2, 6, 2, 64, 2, 3, 3, 7, 2, 6, 2, 27, 2, 3, 2, 4, 2, 0, 4, 6, 2, 339, 3, 24, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 7, 1845, 30, 7, 5, 262, 61, 147, 44, 11, 6, 17, 0, 322, 29, 19, 43, 485, 27, 757, 6, 2, 3, 2, 1, 2, 14, 2, 196, 60, 67, 8, 0, 1205, 3, 2, 26, 2, 1, 2, 0, 3, 0, 2, 9, 2, 3, 2, 0, 2, 0, 7, 0, 5, 0, 2, 0, 2, 0, 2, 2, 2, 1, 2, 0, 3, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 1, 2, 0, 3, 3, 2, 6, 2, 3, 2, 3, 2, 0, 2, 9, 2, 16, 6, 2, 2, 4, 2, 16, 4421, 42719, 33, 4153, 7, 221, 3, 5761, 15, 7472, 16, 621, 2467, 541, 1507, 4938, 6, 4191];

  // This file was generated. Do not modify manually!
  var nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u07fd\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u0898-\u089f\u08ca-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u09fe\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0afa-\u0aff\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b55-\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c04\u0c3c\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0cf3\u0d00-\u0d03\u0d3b\u0d3c\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d81-\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0ebc\u0ec8-\u0ece\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1715\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u180f-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1abf-\u1ace\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf4\u1cf7-\u1cf9\u1dc0-\u1dff\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\u30fb\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua82c\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua8ff-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f\uff65";

  // This file was generated. Do not modify manually!
  var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0560-\u0588\u05d0-\u05ea\u05ef-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u0860-\u086a\u0870-\u0887\u0889-\u088e\u08a0-\u08c9\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u09fc\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c5d\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cdd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d04-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e86-\u0e8a\u0e8c-\u0ea3\u0ea5\u0ea7-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u1711\u171f-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1878\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4c\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1c90-\u1cba\u1cbd-\u1cbf\u1ce9-\u1cec\u1cee-\u1cf3\u1cf5\u1cf6\u1cfa\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312f\u3131-\u318e\u31a0-\u31bf\u31f0-\u31ff\u3400-\u4dbf\u4e00-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7ca\ua7d0\ua7d1\ua7d3\ua7d5-\ua7d9\ua7f2-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua8fe\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab69\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";

  // These are a run-length and offset encoded representation of the
  // >0xffff code points that are a valid part of identifiers. The
  // offset starts at 0x10000, and each pair of numbers represents an
  // offset to the next range, and then a size of the range.

  // Reserved word lists for various dialects of the language

  var reservedWords = {
    3: "abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile",
    5: "class enum extends super const export import",
    6: "enum",
    strict: "implements interface let package private protected public static yield",
    strictBind: "eval arguments"
  };

  // And the keywords

  var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this";

  var keywords$1 = {
    5: ecma5AndLessKeywords,
    "5module": ecma5AndLessKeywords + " export import",
    6: ecma5AndLessKeywords + " const class extends export import super"
  };

  var keywordRelationalOperator = /^in(stanceof)?$/;

  // ## Character categories

  var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
  var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");

  // This has a complexity linear to the value of the code. The
  // assumption is that looking up astral identifier characters is
  // rare.
  function isInAstralSet(code, set) {
    var pos = 0x10000;
    for (var i = 0; i < set.length; i += 2) {
      pos += set[i];
      if (pos > code) { return false }
      pos += set[i + 1];
      if (pos >= code) { return true }
    }
    return false
  }

  // Test whether a given character code starts an identifier.

  function isIdentifierStart(code, astral) {
    if (code < 65) { return code === 36 }
    if (code < 91) { return true }
    if (code < 97) { return code === 95 }
    if (code < 123) { return true }
    if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code)) }
    if (astral === false) { return false }
    return isInAstralSet(code, astralIdentifierStartCodes)
  }

  // Test whether a given character is part of an identifier.

  function isIdentifierChar(code, astral) {
    if (code < 48) { return code === 36 }
    if (code < 58) { return true }
    if (code < 65) { return false }
    if (code < 91) { return true }
    if (code < 97) { return code === 95 }
    if (code < 123) { return true }
    if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code)) }
    if (astral === false) { return false }
    return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes)
  }

  // ## Token types

  // The assignment of fine-grained, information-carrying type objects
  // allows the tokenizer to store the information it has about a
  // token in a way that is very cheap for the parser to look up.

  // All token type variables start with an underscore, to make them
  // easy to recognize.

  // The `beforeExpr` property is used to disambiguate between regular
  // expressions and divisions. It is set on all token types that can
  // be followed by an expression (thus, a slash after them would be a
  // regular expression).
  //
  // The `startsExpr` property is used to check if the token ends a
  // `yield` expression. It is set on all token types that either can
  // directly start an expression (like a quotation mark) or can
  // continue an expression (like the body of a string).
  //
  // `isLoop` marks a keyword as starting a loop, which is important
  // to know when parsing a label, in order to allow or disallow
  // continue jumps to that label.

  var TokenType = function TokenType(label, conf) {
    if ( conf === void 0 ) conf = {};

    this.label = label;
    this.keyword = conf.keyword;
    this.beforeExpr = !!conf.beforeExpr;
    this.startsExpr = !!conf.startsExpr;
    this.isLoop = !!conf.isLoop;
    this.isAssign = !!conf.isAssign;
    this.prefix = !!conf.prefix;
    this.postfix = !!conf.postfix;
    this.binop = conf.binop || null;
    this.updateContext = null;
  };

  function binop(name, prec) {
    return new TokenType(name, {beforeExpr: true, binop: prec})
  }
  var beforeExpr = {beforeExpr: true}, startsExpr = {startsExpr: true};

  // Map keyword names to token types.

  var keywords = {};

  // Succinct definitions of keyword token types
  function kw(name, options) {
    if ( options === void 0 ) options = {};

    options.keyword = name;
    return keywords[name] = new TokenType(name, options)
  }

  var types$1 = {
    num: new TokenType("num", startsExpr),
    regexp: new TokenType("regexp", startsExpr),
    string: new TokenType("string", startsExpr),
    name: new TokenType("name", startsExpr),
    privateId: new TokenType("privateId", startsExpr),
    eof: new TokenType("eof"),

    // Punctuation token types.
    bracketL: new TokenType("[", {beforeExpr: true, startsExpr: true}),
    bracketR: new TokenType("]"),
    braceL: new TokenType("{", {beforeExpr: true, startsExpr: true}),
    braceR: new TokenType("}"),
    parenL: new TokenType("(", {beforeExpr: true, startsExpr: true}),
    parenR: new TokenType(")"),
    comma: new TokenType(",", beforeExpr),
    semi: new TokenType(";", beforeExpr),
    colon: new TokenType(":", beforeExpr),
    dot: new TokenType("."),
    question: new TokenType("?", beforeExpr),
    questionDot: new TokenType("?."),
    arrow: new TokenType("=>", beforeExpr),
    template: new TokenType("template"),
    invalidTemplate: new TokenType("invalidTemplate"),
    ellipsis: new TokenType("...", beforeExpr),
    backQuote: new TokenType("`", startsExpr),
    dollarBraceL: new TokenType("${", {beforeExpr: true, startsExpr: true}),

    // Operators. These carry several kinds of properties to help the
    // parser use them properly (the presence of these properties is
    // what categorizes them as operators).
    //
    // `binop`, when present, specifies that this operator is a binary
    // operator, and will refer to its precedence.
    //
    // `prefix` and `postfix` mark the operator as a prefix or postfix
    // unary operator.
    //
    // `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as
    // binary operators with a very low precedence, that should result
    // in AssignmentExpression nodes.

    eq: new TokenType("=", {beforeExpr: true, isAssign: true}),
    assign: new TokenType("_=", {beforeExpr: true, isAssign: true}),
    incDec: new TokenType("++/--", {prefix: true, postfix: true, startsExpr: true}),
    prefix: new TokenType("!/~", {beforeExpr: true, prefix: true, startsExpr: true}),
    logicalOR: binop("||", 1),
    logicalAND: binop("&&", 2),
    bitwiseOR: binop("|", 3),
    bitwiseXOR: binop("^", 4),
    bitwiseAND: binop("&", 5),
    equality: binop("==/!=/===/!==", 6),
    relational: binop("</>/<=/>=", 7),
    bitShift: binop("<</>>/>>>", 8),
    plusMin: new TokenType("+/-", {beforeExpr: true, binop: 9, prefix: true, startsExpr: true}),
    modulo: binop("%", 10),
    star: binop("*", 10),
    slash: binop("/", 10),
    starstar: new TokenType("**", {beforeExpr: true}),
    coalesce: binop("??", 1),

    // Keyword token types.
    _break: kw("break"),
    _case: kw("case", beforeExpr),
    _catch: kw("catch"),
    _continue: kw("continue"),
    _debugger: kw("debugger"),
    _default: kw("default", beforeExpr),
    _do: kw("do", {isLoop: true, beforeExpr: true}),
    _else: kw("else", beforeExpr),
    _finally: kw("finally"),
    _for: kw("for", {isLoop: true}),
    _function: kw("function", startsExpr),
    _if: kw("if"),
    _return: kw("return", beforeExpr),
    _switch: kw("switch"),
    _throw: kw("throw", beforeExpr),
    _try: kw("try"),
    _var: kw("var"),
    _const: kw("const"),
    _while: kw("while", {isLoop: true}),
    _with: kw("with"),
    _new: kw("new", {beforeExpr: true, startsExpr: true}),
    _this: kw("this", startsExpr),
    _super: kw("super", startsExpr),
    _class: kw("class", startsExpr),
    _extends: kw("extends", beforeExpr),
    _export: kw("export"),
    _import: kw("import", startsExpr),
    _null: kw("null", startsExpr),
    _true: kw("true", startsExpr),
    _false: kw("false", startsExpr),
    _in: kw("in", {beforeExpr: true, binop: 7}),
    _instanceof: kw("instanceof", {beforeExpr: true, binop: 7}),
    _typeof: kw("typeof", {beforeExpr: true, prefix: true, startsExpr: true}),
    _void: kw("void", {beforeExpr: true, prefix: true, startsExpr: true}),
    _delete: kw("delete", {beforeExpr: true, prefix: true, startsExpr: true})
  };

  // Matches a whole line break (where CRLF is considered a single
  // line break). Used to count lines.

  var lineBreak = /\r\n?|\n|\u2028|\u2029/;
  var lineBreakG = new RegExp(lineBreak.source, "g");

  function isNewLine(code) {
    return code === 10 || code === 13 || code === 0x2028 || code === 0x2029
  }

  function nextLineBreak(code, from, end) {
    if ( end === void 0 ) end = code.length;

    for (var i = from; i < end; i++) {
      var next = code.charCodeAt(i);
      if (isNewLine(next))
        { return i < end - 1 && next === 13 && code.charCodeAt(i + 1) === 10 ? i + 2 : i + 1 }
    }
    return -1
  }

  var nonASCIIwhitespace = /[\u1680\u2000-\u200a\u202f\u205f\u3000\ufeff]/;

  var skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g;

  var ref = Object.prototype;
  var hasOwnProperty = ref.hasOwnProperty;
  var toString = ref.toString;

  var hasOwn = Object.hasOwn || (function (obj, propName) { return (
    hasOwnProperty.call(obj, propName)
  ); });

  var isArray = Array.isArray || (function (obj) { return (
    toString.call(obj) === "[object Array]"
  ); });

  var regexpCache = Object.create(null);

  function wordsRegexp(words) {
    return regexpCache[words] || (regexpCache[words] = new RegExp("^(?:" + words.replace(/ /g, "|") + ")$"))
  }

  function codePointToString(code) {
    // UTF-16 Decoding
    if (code <= 0xFFFF) { return String.fromCharCode(code) }
    code -= 0x10000;
    return String.fromCharCode((code >> 10) + 0xD800, (code & 1023) + 0xDC00)
  }

  var loneSurrogate = /(?:[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF])/;

  // These are used when `options.locations` is on, for the
  // `startLoc` and `endLoc` properties.

  var Position = function Position(line, col) {
    this.line = line;
    this.column = col;
  };

  Position.prototype.offset = function offset (n) {
    return new Position(this.line, this.column + n)
  };

  var SourceLocation = function SourceLocation(p, start, end) {
    this.start = start;
    this.end = end;
    if (p.sourceFile !== null) { this.source = p.sourceFile; }
  };

  // The `getLineInfo` function is mostly useful when the
  // `locations` option is off (for performance reasons) and you
  // want to find the line/column position for a given character
  // offset. `input` should be the code string that the offset refers
  // into.

  function getLineInfo(input, offset) {
    for (var line = 1, cur = 0;;) {
      var nextBreak = nextLineBreak(input, cur, offset);
      if (nextBreak < 0) { return new Position(line, offset - cur) }
      ++line;
      cur = nextBreak;
    }
  }

  // A second argument must be given to configure the parser process.
  // These options are recognized (only `ecmaVersion` is required):

  var defaultOptions = {
    // `ecmaVersion` indicates the ECMAScript version to parse. Must be
    // either 3, 5, 6 (or 2015), 7 (2016), 8 (2017), 9 (2018), 10
    // (2019), 11 (2020), 12 (2021), 13 (2022), 14 (2023), or `"latest"`
    // (the latest version the library supports). This influences
    // support for strict mode, the set of reserved words, and support
    // for new syntax features.
    ecmaVersion: null,
    // `sourceType` indicates the mode the code should be parsed in.
    // Can be either `"script"` or `"module"`. This influences global
    // strict mode and parsing of `import` and `export` declarations.
    sourceType: "script",
    // `onInsertedSemicolon` can be a callback that will be called when
    // a semicolon is automatically inserted. It will be passed the
    // position of the inserted semicolon as an offset, and if
    // `locations` is enabled, it is given the location as a `{line,
    // column}` object as second argument.
    onInsertedSemicolon: null,
    // `onTrailingComma` is similar to `onInsertedSemicolon`, but for
    // trailing commas.
    onTrailingComma: null,
    // By default, reserved words are only enforced if ecmaVersion >= 5.
    // Set `allowReserved` to a boolean value to explicitly turn this on
    // an off. When this option has the value "never", reserved words
    // and keywords can also not be used as property names.
    allowReserved: null,
    // When enabled, a return at the top level is not considered an
    // error.
    allowReturnOutsideFunction: false,
    // When enabled, import/export statements are not constrained to
    // appearing at the top of the program, and an import.meta expression
    // in a script isn't considered an error.
    allowImportExportEverywhere: false,
    // By default, await identifiers are allowed to appear at the top-level scope only if ecmaVersion >= 2022.
    // When enabled, await identifiers are allowed to appear at the top-level scope,
    // but they are still not allowed in non-async functions.
    allowAwaitOutsideFunction: null,
    // When enabled, super identifiers are not constrained to
    // appearing in methods and do not raise an error when they appear elsewhere.
    allowSuperOutsideMethod: null,
    // When enabled, hashbang directive in the beginning of file is
    // allowed and treated as a line comment. Enabled by default when
    // `ecmaVersion` >= 2023.
    allowHashBang: false,
    // By default, the parser will verify that private properties are
    // only used in places where they are valid and have been declared.
    // Set this to false to turn such checks off.
    checkPrivateFields: true,
    // When `locations` is on, `loc` properties holding objects with
    // `start` and `end` properties in `{line, column}` form (with
    // line being 1-based and column 0-based) will be attached to the
    // nodes.
    locations: false,
    // A function can be passed as `onToken` option, which will
    // cause Acorn to call that function with object in the same
    // format as tokens returned from `tokenizer().getToken()`. Note
    // that you are not allowed to call the parser from the
    // callback—that will corrupt its internal state.
    onToken: null,
    // A function can be passed as `onComment` option, which will
    // cause Acorn to call that function with `(block, text, start,
    // end)` parameters whenever a comment is skipped. `block` is a
    // boolean indicating whether this is a block (`/* */`) comment,
    // `text` is the content of the comment, and `start` and `end` are
    // character offsets that denote the start and end of the comment.
    // When the `locations` option is on, two more parameters are
    // passed, the full `{line, column}` locations of the start and
    // end of the comments. Note that you are not allowed to call the
    // parser from the callback—that will corrupt its internal state.
    // When this option has an array as value, objects representing the
    // comments are pushed to it.
    onComment: null,
    // Nodes have their start and end characters offsets recorded in
    // `start` and `end` properties (directly on the node, rather than
    // the `loc` object, which holds line/column data. To also add a
    // [semi-standardized][range] `range` property holding a `[start,
    // end]` array with the same numbers, set the `ranges` option to
    // `true`.
    //
    // [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
    ranges: false,
    // It is possible to parse multiple files into a single AST by
    // passing the tree produced by parsing the first file as
    // `program` option in subsequent parses. This will add the
    // toplevel forms of the parsed file to the `Program` (top) node
    // of an existing parse tree.
    program: null,
    // When `locations` is on, you can pass this to record the source
    // file in every node's `loc` object.
    sourceFile: null,
    // This value, if given, is stored in every node, whether
    // `locations` is on or off.
    directSourceFile: null,
    // When enabled, parenthesized expressions are represented by
    // (non-standard) ParenthesizedExpression nodes
    preserveParens: false
  };

  // Interpret and default an options object

  var warnedAboutEcmaVersion = false;

  function getOptions(opts) {
    var options = {};

    for (var opt in defaultOptions)
      { options[opt] = opts && hasOwn(opts, opt) ? opts[opt] : defaultOptions[opt]; }

    if (options.ecmaVersion === "latest") {
      options.ecmaVersion = 1e8;
    } else if (options.ecmaVersion == null) {
      if (!warnedAboutEcmaVersion && typeof console === "object" && console.warn) {
        warnedAboutEcmaVersion = true;
        console.warn("Since Acorn 8.0.0, options.ecmaVersion is required.\nDefaulting to 2020, but this will stop working in the future.");
      }
      options.ecmaVersion = 11;
    } else if (options.ecmaVersion >= 2015) {
      options.ecmaVersion -= 2009;
    }

    if (options.allowReserved == null)
      { options.allowReserved = options.ecmaVersion < 5; }

    if (!opts || opts.allowHashBang == null)
      { options.allowHashBang = options.ecmaVersion >= 14; }

    if (isArray(options.onToken)) {
      var tokens = options.onToken;
      options.onToken = function (token) { return tokens.push(token); };
    }
    if (isArray(options.onComment))
      { options.onComment = pushComment(options, options.onComment); }

    return options
  }

  function pushComment(options, array) {
    return function(block, text, start, end, startLoc, endLoc) {
      var comment = {
        type: block ? "Block" : "Line",
        value: text,
        start: start,
        end: end
      };
      if (options.locations)
        { comment.loc = new SourceLocation(this, startLoc, endLoc); }
      if (options.ranges)
        { comment.range = [start, end]; }
      array.push(comment);
    }
  }

  // Each scope gets a bitset that may contain these flags
  var
      SCOPE_TOP = 1,
      SCOPE_FUNCTION = 2,
      SCOPE_ASYNC = 4,
      SCOPE_GENERATOR = 8,
      SCOPE_ARROW = 16,
      SCOPE_SIMPLE_CATCH = 32,
      SCOPE_SUPER = 64,
      SCOPE_DIRECT_SUPER = 128,
      SCOPE_CLASS_STATIC_BLOCK = 256,
      SCOPE_VAR = SCOPE_TOP | SCOPE_FUNCTION | SCOPE_CLASS_STATIC_BLOCK;

  function functionFlags(async, generator) {
    return SCOPE_FUNCTION | (async ? SCOPE_ASYNC : 0) | (generator ? SCOPE_GENERATOR : 0)
  }

  // Used in checkLVal* and declareName to determine the type of a binding
  var
      BIND_NONE = 0, // Not a binding
      BIND_VAR = 1, // Var-style binding
      BIND_LEXICAL = 2, // Let- or const-style binding
      BIND_FUNCTION = 3, // Function declaration
      BIND_SIMPLE_CATCH = 4, // Simple (identifier pattern) catch binding
      BIND_OUTSIDE = 5; // Special case for function names as bound inside the function

  var Parser = function Parser(options, input, startPos) {
    this.options = options = getOptions(options);
    this.sourceFile = options.sourceFile;
    this.keywords = wordsRegexp(keywords$1[options.ecmaVersion >= 6 ? 6 : options.sourceType === "module" ? "5module" : 5]);
    var reserved = "";
    if (options.allowReserved !== true) {
      reserved = reservedWords[options.ecmaVersion >= 6 ? 6 : options.ecmaVersion === 5 ? 5 : 3];
      if (options.sourceType === "module") { reserved += " await"; }
    }
    this.reservedWords = wordsRegexp(reserved);
    var reservedStrict = (reserved ? reserved + " " : "") + reservedWords.strict;
    this.reservedWordsStrict = wordsRegexp(reservedStrict);
    this.reservedWordsStrictBind = wordsRegexp(reservedStrict + " " + reservedWords.strictBind);
    this.input = String(input);

    // Used to signal to callers of `readWord1` whether the word
    // contained any escape sequences. This is needed because words with
    // escape sequences must not be interpreted as keywords.
    this.containsEsc = false;

    // Set up token state

    // The current position of the tokenizer in the input.
    if (startPos) {
      this.pos = startPos;
      this.lineStart = this.input.lastIndexOf("\n", startPos - 1) + 1;
      this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length;
    } else {
      this.pos = this.lineStart = 0;
      this.curLine = 1;
    }

    // Properties of the current token:
    // Its type
    this.type = types$1.eof;
    // For tokens that include more information than their type, the value
    this.value = null;
    // Its start and end offset
    this.start = this.end = this.pos;
    // And, if locations are used, the {line, column} object
    // corresponding to those offsets
    this.startLoc = this.endLoc = this.curPosition();

    // Position information for the previous token
    this.lastTokEndLoc = this.lastTokStartLoc = null;
    this.lastTokStart = this.lastTokEnd = this.pos;

    // The context stack is used to superficially track syntactic
    // context to predict whether a regular expression is allowed in a
    // given position.
    this.context = this.initialContext();
    this.exprAllowed = true;

    // Figure out if it's a module code.
    this.inModule = options.sourceType === "module";
    this.strict = this.inModule || this.strictDirective(this.pos);

    // Used to signify the start of a potential arrow function
    this.potentialArrowAt = -1;
    this.potentialArrowInForAwait = false;

    // Positions to delayed-check that yield/await does not exist in default parameters.
    this.yieldPos = this.awaitPos = this.awaitIdentPos = 0;
    // Labels in scope.
    this.labels = [];
    // Thus-far undefined exports.
    this.undefinedExports = Object.create(null);

    // If enabled, skip leading hashbang line.
    if (this.pos === 0 && options.allowHashBang && this.input.slice(0, 2) === "#!")
      { this.skipLineComment(2); }

    // Scope tracking for duplicate variable names (see scope.js)
    this.scopeStack = [];
    this.enterScope(SCOPE_TOP);

    // For RegExp validation
    this.regexpState = null;

    // The stack of private names.
    // Each element has two properties: 'declared' and 'used'.
    // When it exited from the outermost class definition, all used private names must be declared.
    this.privateNameStack = [];
  };

  var prototypeAccessors = { inFunction: { configurable: true },inGenerator: { configurable: true },inAsync: { configurable: true },canAwait: { configurable: true },allowSuper: { configurable: true },allowDirectSuper: { configurable: true },treatFunctionsAsVar: { configurable: true },allowNewDotTarget: { configurable: true },inClassStaticBlock: { configurable: true } };

  Parser.prototype.parse = function parse () {
    var node = this.options.program || this.startNode();
    this.nextToken();
    return this.parseTopLevel(node)
  };

  prototypeAccessors.inFunction.get = function () { return (this.currentVarScope().flags & SCOPE_FUNCTION) > 0 };

  prototypeAccessors.inGenerator.get = function () { return (this.currentVarScope().flags & SCOPE_GENERATOR) > 0 && !this.currentVarScope().inClassFieldInit };

  prototypeAccessors.inAsync.get = function () { return (this.currentVarScope().flags & SCOPE_ASYNC) > 0 && !this.currentVarScope().inClassFieldInit };

  prototypeAccessors.canAwait.get = function () {
    for (var i = this.scopeStack.length - 1; i >= 0; i--) {
      var scope = this.scopeStack[i];
      if (scope.inClassFieldInit || scope.flags & SCOPE_CLASS_STATIC_BLOCK) { return false }
      if (scope.flags & SCOPE_FUNCTION) { return (scope.flags & SCOPE_ASYNC) > 0 }
    }
    return (this.inModule && this.options.ecmaVersion >= 13) || this.options.allowAwaitOutsideFunction
  };

  prototypeAccessors.allowSuper.get = function () {
    var ref = this.currentThisScope();
      var flags = ref.flags;
      var inClassFieldInit = ref.inClassFieldInit;
    return (flags & SCOPE_SUPER) > 0 || inClassFieldInit || this.options.allowSuperOutsideMethod
  };

  prototypeAccessors.allowDirectSuper.get = function () { return (this.currentThisScope().flags & SCOPE_DIRECT_SUPER) > 0 };

  prototypeAccessors.treatFunctionsAsVar.get = function () { return this.treatFunctionsAsVarInScope(this.currentScope()) };

  prototypeAccessors.allowNewDotTarget.get = function () {
    var ref = this.currentThisScope();
      var flags = ref.flags;
      var inClassFieldInit = ref.inClassFieldInit;
    return (flags & (SCOPE_FUNCTION | SCOPE_CLASS_STATIC_BLOCK)) > 0 || inClassFieldInit
  };

  prototypeAccessors.inClassStaticBlock.get = function () {
    return (this.currentVarScope().flags & SCOPE_CLASS_STATIC_BLOCK) > 0
  };

  Parser.extend = function extend () {
      var plugins = [], len = arguments.length;
      while ( len-- ) plugins[ len ] = arguments[ len ];

    var cls = this;
    for (var i = 0; i < plugins.length; i++) { cls = plugins[i](cls); }
    return cls
  };

  Parser.parse = function parse (input, options) {
    return new this(options, input).parse()
  };

  Parser.parseExpressionAt = function parseExpressionAt (input, pos, options) {
    var parser = new this(options, input, pos);
    parser.nextToken();
    return parser.parseExpression()
  };

  Parser.tokenizer = function tokenizer (input, options) {
    return new this(options, input)
  };

  Object.defineProperties( Parser.prototype, prototypeAccessors );

  var pp$9 = Parser.prototype;

  // ## Parser utilities

  var literal = /^(?:'((?:\\.|[^'\\])*?)'|"((?:\\.|[^"\\])*?)")/s;
  pp$9.strictDirective = function(start) {
    if (this.options.ecmaVersion < 5) { return false }
    for (;;) {
      // Try to find string literal.
      skipWhiteSpace.lastIndex = start;
      start += skipWhiteSpace.exec(this.input)[0].length;
      var match = literal.exec(this.input.slice(start));
      if (!match) { return false }
      if ((match[1] || match[2]) === "use strict") {
        skipWhiteSpace.lastIndex = start + match[0].length;
        var spaceAfter = skipWhiteSpace.exec(this.input), end = spaceAfter.index + spaceAfter[0].length;
        var next = this.input.charAt(end);
        return next === ";" || next === "}" ||
          (lineBreak.test(spaceAfter[0]) &&
           !(/[(`.[+\-/*%<>=,?^&]/.test(next) || next === "!" && this.input.charAt(end + 1) === "="))
      }
      start += match[0].length;

      // Skip semicolon, if any.
      skipWhiteSpace.lastIndex = start;
      start += skipWhiteSpace.exec(this.input)[0].length;
      if (this.input[start] === ";")
        { start++; }
    }
  };

  // Predicate that tests whether the next token is of the given
  // type, and if yes, consumes it as a side effect.

  pp$9.eat = function(type) {
    if (this.type === type) {
      this.next();
      return true
    } else {
      return false
    }
  };

  // Tests whether parsed token is a contextual keyword.

  pp$9.isContextual = function(name) {
    return this.type === types$1.name && this.value === name && !this.containsEsc
  };

  // Consumes contextual keyword if possible.

  pp$9.eatContextual = function(name) {
    if (!this.isContextual(name)) { return false }
    this.next();
    return true
  };

  // Asserts that following token is given contextual keyword.

  pp$9.expectContextual = function(name) {
    if (!this.eatContextual(name)) { this.unexpected(); }
  };

  // Test whether a semicolon can be inserted at the current position.

  pp$9.canInsertSemicolon = function() {
    return this.type === types$1.eof ||
      this.type === types$1.braceR ||
      lineBreak.test(this.input.slice(this.lastTokEnd, this.start))
  };

  pp$9.insertSemicolon = function() {
    if (this.canInsertSemicolon()) {
      if (this.options.onInsertedSemicolon)
        { this.options.onInsertedSemicolon(this.lastTokEnd, this.lastTokEndLoc); }
      return true
    }
  };

  // Consume a semicolon, or, failing that, see if we are allowed to
  // pretend that there is a semicolon at this position.

  pp$9.semicolon = function() {
    if (!this.eat(types$1.semi) && !this.insertSemicolon()) { this.unexpected(); }
  };

  pp$9.afterTrailingComma = function(tokType, notNext) {
    if (this.type === tokType) {
      if (this.options.onTrailingComma)
        { this.options.onTrailingComma(this.lastTokStart, this.lastTokStartLoc); }
      if (!notNext)
        { this.next(); }
      return true
    }
  };

  // Expect a token of a given type. If found, consume it, otherwise,
  // raise an unexpected token error.

  pp$9.expect = function(type) {
    this.eat(type) || this.unexpected();
  };

  // Raise an unexpected token error.

  pp$9.unexpected = function(pos) {
    this.raise(pos != null ? pos : this.start, "Unexpected token");
  };

  var DestructuringErrors = function DestructuringErrors() {
    this.shorthandAssign =
    this.trailingComma =
    this.parenthesizedAssign =
    this.parenthesizedBind =
    this.doubleProto =
      -1;
  };

  pp$9.checkPatternErrors = function(refDestructuringErrors, isAssign) {
    if (!refDestructuringErrors) { return }
    if (refDestructuringErrors.trailingComma > -1)
      { this.raiseRecoverable(refDestructuringErrors.trailingComma, "Comma is not permitted after the rest element"); }
    var parens = isAssign ? refDestructuringErrors.parenthesizedAssign : refDestructuringErrors.parenthesizedBind;
    if (parens > -1) { this.raiseRecoverable(parens, isAssign ? "Assigning to rvalue" : "Parenthesized pattern"); }
  };

  pp$9.checkExpressionErrors = function(refDestructuringErrors, andThrow) {
    if (!refDestructuringErrors) { return false }
    var shorthandAssign = refDestructuringErrors.shorthandAssign;
    var doubleProto = refDestructuringErrors.doubleProto;
    if (!andThrow) { return shorthandAssign >= 0 || doubleProto >= 0 }
    if (shorthandAssign >= 0)
      { this.raise(shorthandAssign, "Shorthand property assignments are valid only in destructuring patterns"); }
    if (doubleProto >= 0)
      { this.raiseRecoverable(doubleProto, "Redefinition of __proto__ property"); }
  };

  pp$9.checkYieldAwaitInDefaultParams = function() {
    if (this.yieldPos && (!this.awaitPos || this.yieldPos < this.awaitPos))
      { this.raise(this.yieldPos, "Yield expression cannot be a default value"); }
    if (this.awaitPos)
      { this.raise(this.awaitPos, "Await expression cannot be a default value"); }
  };

  pp$9.isSimpleAssignTarget = function(expr) {
    if (expr.type === "ParenthesizedExpression")
      { return this.isSimpleAssignTarget(expr.expression) }
    return expr.type === "Identifier" || expr.type === "MemberExpression"
  };

  var pp$8 = Parser.prototype;

  // ### Statement parsing

  // Parse a program. Initializes the parser, reads any number of
  // statements, and wraps them in a Program node.  Optionally takes a
  // `program` argument.  If present, the statements will be appended
  // to its body instead of creating a new node.

  pp$8.parseTopLevel = function(node) {
    var exports = Object.create(null);
    if (!node.body) { node.body = []; }
    while (this.type !== types$1.eof) {
      var stmt = this.parseStatement(null, true, exports);
      node.body.push(stmt);
    }
    if (this.inModule)
      { for (var i = 0, list = Object.keys(this.undefinedExports); i < list.length; i += 1)
        {
          var name = list[i];

          this.raiseRecoverable(this.undefinedExports[name].start, ("Export '" + name + "' is not defined"));
        } }
    this.adaptDirectivePrologue(node.body);
    this.next();
    node.sourceType = this.options.sourceType;
    return this.finishNode(node, "Program")
  };

  var loopLabel = {kind: "loop"}, switchLabel = {kind: "switch"};

  pp$8.isLet = function(context) {
    if (this.options.ecmaVersion < 6 || !this.isContextual("let")) { return false }
    skipWhiteSpace.lastIndex = this.pos;
    var skip = skipWhiteSpace.exec(this.input);
    var next = this.pos + skip[0].length, nextCh = this.input.charCodeAt(next);
    // For ambiguous cases, determine if a LexicalDeclaration (or only a
    // Statement) is allowed here. If context is not empty then only a Statement
    // is allowed. However, `let [` is an explicit negative lookahead for
    // ExpressionStatement, so special-case it first.
    if (nextCh === 91 || nextCh === 92) { return true } // '[', '\'
    if (context) { return false }

    if (nextCh === 123 || nextCh > 0xd7ff && nextCh < 0xdc00) { return true } // '{', astral
    if (isIdentifierStart(nextCh, true)) {
      var pos = next + 1;
      while (isIdentifierChar(nextCh = this.input.charCodeAt(pos), true)) { ++pos; }
      if (nextCh === 92 || nextCh > 0xd7ff && nextCh < 0xdc00) { return true }
      var ident = this.input.slice(next, pos);
      if (!keywordRelationalOperator.test(ident)) { return true }
    }
    return false
  };

  // check 'async [no LineTerminator here] function'
  // - 'async /*foo*/ function' is OK.
  // - 'async /*\n*/ function' is invalid.
  pp$8.isAsyncFunction = function() {
    if (this.options.ecmaVersion < 8 || !this.isContextual("async"))
      { return false }

    skipWhiteSpace.lastIndex = this.pos;
    var skip = skipWhiteSpace.exec(this.input);
    var next = this.pos + skip[0].length, after;
    return !lineBreak.test(this.input.slice(this.pos, next)) &&
      this.input.slice(next, next + 8) === "function" &&
      (next + 8 === this.input.length ||
       !(isIdentifierChar(after = this.input.charCodeAt(next + 8)) || after > 0xd7ff && after < 0xdc00))
  };

  // Parse a single statement.
  //
  // If expecting a statement and finding a slash operator, parse a
  // regular expression literal. This is to handle cases like
  // `if (foo) /blah/.exec(foo)`, where looking at the previous token
  // does not help.

  pp$8.parseStatement = function(context, topLevel, exports) {
    var starttype = this.type, node = this.startNode(), kind;

    if (this.isLet(context)) {
      starttype = types$1._var;
      kind = "let";
    }

    // Most types of statements are recognized by the keyword they
    // start with. Many are trivial to parse, some require a bit of
    // complexity.

    switch (starttype) {
    case types$1._break: case types$1._continue: return this.parseBreakContinueStatement(node, starttype.keyword)
    case types$1._debugger: return this.parseDebuggerStatement(node)
    case types$1._do: return this.parseDoStatement(node)
    case types$1._for: return this.parseForStatement(node)
    case types$1._function:
      // Function as sole body of either an if statement or a labeled statement
      // works, but not when it is part of a labeled statement that is the sole
      // body of an if statement.
      if ((context && (this.strict || context !== "if" && context !== "label")) && this.options.ecmaVersion >= 6) { this.unexpected(); }
      return this.parseFunctionStatement(node, false, !context)
    case types$1._class:
      if (context) { this.unexpected(); }
      return this.parseClass(node, true)
    case types$1._if: return this.parseIfStatement(node)
    case types$1._return: return this.parseReturnStatement(node)
    case types$1._switch: return this.parseSwitchStatement(node)
    case types$1._throw: return this.parseThrowStatement(node)
    case types$1._try: return this.parseTryStatement(node)
    case types$1._const: case types$1._var:
      kind = kind || this.value;
      if (context && kind !== "var") { this.unexpected(); }
      return this.parseVarStatement(node, kind)
    case types$1._while: return this.parseWhileStatement(node)
    case types$1._with: return this.parseWithStatement(node)
    case types$1.braceL: return this.parseBlock(true, node)
    case types$1.semi: return this.parseEmptyStatement(node)
    case types$1._export:
    case types$1._import:
      if (this.options.ecmaVersion > 10 && starttype === types$1._import) {
        skipWhiteSpace.lastIndex = this.pos;
        var skip = skipWhiteSpace.exec(this.input);
        var next = this.pos + skip[0].length, nextCh = this.input.charCodeAt(next);
        if (nextCh === 40 || nextCh === 46) // '(' or '.'
          { return this.parseExpressionStatement(node, this.parseExpression()) }
      }

      if (!this.options.allowImportExportEverywhere) {
        if (!topLevel)
          { this.raise(this.start, "'import' and 'export' may only appear at the top level"); }
        if (!this.inModule)
          { this.raise(this.start, "'import' and 'export' may appear only with 'sourceType: module'"); }
      }
      return starttype === types$1._import ? this.parseImport(node) : this.parseExport(node, exports)

      // If the statement does not start with a statement keyword or a
      // brace, it's an ExpressionStatement or LabeledStatement. We
      // simply start parsing an expression, and afterwards, if the
      // next token is a colon and the expression was a simple
      // Identifier node, we switch to interpreting it as a label.
    default:
      if (this.isAsyncFunction()) {
        if (context) { this.unexpected(); }
        this.next();
        return this.parseFunctionStatement(node, true, !context)
      }

      var maybeName = this.value, expr = this.parseExpression();
      if (starttype === types$1.name && expr.type === "Identifier" && this.eat(types$1.colon))
        { return this.parseLabeledStatement(node, maybeName, expr, context) }
      else { return this.parseExpressionStatement(node, expr) }
    }
  };

  pp$8.parseBreakContinueStatement = function(node, keyword) {
    var isBreak = keyword === "break";
    this.next();
    if (this.eat(types$1.semi) || this.insertSemicolon()) { node.label = null; }
    else if (this.type !== types$1.name) { this.unexpected(); }
    else {
      node.label = this.parseIdent();
      this.semicolon();
    }

    // Verify that there is an actual destination to break or
    // continue to.
    var i = 0;
    for (; i < this.labels.length; ++i) {
      var lab = this.labels[i];
      if (node.label == null || lab.name === node.label.name) {
        if (lab.kind != null && (isBreak || lab.kind === "loop")) { break }
        if (node.label && isBreak) { break }
      }
    }
    if (i === this.labels.length) { this.raise(node.start, "Unsyntactic " + keyword); }
    return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")
  };

  pp$8.parseDebuggerStatement = function(node) {
    this.next();
    this.semicolon();
    return this.finishNode(node, "DebuggerStatement")
  };

  pp$8.parseDoStatement = function(node) {
    this.next();
    this.labels.push(loopLabel);
    node.body = this.parseStatement("do");
    this.labels.pop();
    this.expect(types$1._while);
    node.test = this.parseParenExpression();
    if (this.options.ecmaVersion >= 6)
      { this.eat(types$1.semi); }
    else
      { this.semicolon(); }
    return this.finishNode(node, "DoWhileStatement")
  };

  // Disambiguating between a `for` and a `for`/`in` or `for`/`of`
  // loop is non-trivial. Basically, we have to parse the init `var`
  // statement or expression, disallowing the `in` operator (see
  // the second parameter to `parseExpression`), and then check
  // whether the next token is `in` or `of`. When there is no init
  // part (semicolon immediately after the opening parenthesis), it
  // is a regular `for` loop.

  pp$8.parseForStatement = function(node) {
    this.next();
    var awaitAt = (this.options.ecmaVersion >= 9 && this.canAwait && this.eatContextual("await")) ? this.lastTokStart : -1;
    this.labels.push(loopLabel);
    this.enterScope(0);
    this.expect(types$1.parenL);
    if (this.type === types$1.semi) {
      if (awaitAt > -1) { this.unexpected(awaitAt); }
      return this.parseFor(node, null)
    }
    var isLet = this.isLet();
    if (this.type === types$1._var || this.type === types$1._const || isLet) {
      var init$1 = this.startNode(), kind = isLet ? "let" : this.value;
      this.next();
      this.parseVar(init$1, true, kind);
      this.finishNode(init$1, "VariableDeclaration");
      if ((this.type === types$1._in || (this.options.ecmaVersion >= 6 && this.isContextual("of"))) && init$1.declarations.length === 1) {
        if (this.options.ecmaVersion >= 9) {
          if (this.type === types$1._in) {
            if (awaitAt > -1) { this.unexpected(awaitAt); }
          } else { node.await = awaitAt > -1; }
        }
        return this.parseForIn(node, init$1)
      }
      if (awaitAt > -1) { this.unexpected(awaitAt); }
      return this.parseFor(node, init$1)
    }
    var startsWithLet = this.isContextual("let"), isForOf = false;
    var containsEsc = this.containsEsc;
    var refDestructuringErrors = new DestructuringErrors;
    var initPos = this.start;
    var init = awaitAt > -1
      ? this.parseExprSubscripts(refDestructuringErrors, "await")
      : this.parseExpression(true, refDestructuringErrors);
    if (this.type === types$1._in || (isForOf = this.options.ecmaVersion >= 6 && this.isContextual("of"))) {
      if (awaitAt > -1) { // implies `ecmaVersion >= 9` (see declaration of awaitAt)
        if (this.type === types$1._in) { this.unexpected(awaitAt); }
        node.await = true;
      } else if (isForOf && this.options.ecmaVersion >= 8) {
        if (init.start === initPos && !containsEsc && init.type === "Identifier" && init.name === "async") { this.unexpected(); }
        else if (this.options.ecmaVersion >= 9) { node.await = false; }
      }
      if (startsWithLet && isForOf) { this.raise(init.start, "The left-hand side of a for-of loop may not start with 'let'."); }
      this.toAssignable(init, false, refDestructuringErrors);
      this.checkLValPattern(init);
      return this.parseForIn(node, init)
    } else {
      this.checkExpressionErrors(refDestructuringErrors, true);
    }
    if (awaitAt > -1) { this.unexpected(awaitAt); }
    return this.parseFor(node, init)
  };

  pp$8.parseFunctionStatement = function(node, isAsync, declarationPosition) {
    this.next();
    return this.parseFunction(node, FUNC_STATEMENT | (declarationPosition ? 0 : FUNC_HANGING_STATEMENT), false, isAsync)
  };

  pp$8.parseIfStatement = function(node) {
    this.next();
    node.test = this.parseParenExpression();
    // allow function declarations in branches, but only in non-strict mode
    node.consequent = this.parseStatement("if");
    node.alternate = this.eat(types$1._else) ? this.parseStatement("if") : null;
    return this.finishNode(node, "IfStatement")
  };

  pp$8.parseReturnStatement = function(node) {
    if (!this.inFunction && !this.options.allowReturnOutsideFunction)
      { this.raise(this.start, "'return' outside of function"); }
    this.next();

    // In `return` (and `break`/`continue`), the keywords with
    // optional arguments, we eagerly look for a semicolon or the
    // possibility to insert one.

    if (this.eat(types$1.semi) || this.insertSemicolon()) { node.argument = null; }
    else { node.argument = this.parseExpression(); this.semicolon(); }
    return this.finishNode(node, "ReturnStatement")
  };

  pp$8.parseSwitchStatement = function(node) {
    this.next();
    node.discriminant = this.parseParenExpression();
    node.cases = [];
    this.expect(types$1.braceL);
    this.labels.push(switchLabel);
    this.enterScope(0);

    // Statements under must be grouped (by label) in SwitchCase
    // nodes. `cur` is used to keep the node that we are currently
    // adding statements to.

    var cur;
    for (var sawDefault = false; this.type !== types$1.braceR;) {
      if (this.type === types$1._case || this.type === types$1._default) {
        var isCase = this.type === types$1._case;
        if (cur) { this.finishNode(cur, "SwitchCase"); }
        node.cases.push(cur = this.startNode());
        cur.consequent = [];
        this.next();
        if (isCase) {
          cur.test = this.parseExpression();
        } else {
          if (sawDefault) { this.raiseRecoverable(this.lastTokStart, "Multiple default clauses"); }
          sawDefault = true;
          cur.test = null;
        }
        this.expect(types$1.colon);
      } else {
        if (!cur) { this.unexpected(); }
        cur.consequent.push(this.parseStatement(null));
      }
    }
    this.exitScope();
    if (cur) { this.finishNode(cur, "SwitchCase"); }
    this.next(); // Closing brace
    this.labels.pop();
    return this.finishNode(node, "SwitchStatement")
  };

  pp$8.parseThrowStatement = function(node) {
    this.next();
    if (lineBreak.test(this.input.slice(this.lastTokEnd, this.start)))
      { this.raise(this.lastTokEnd, "Illegal newline after throw"); }
    node.argument = this.parseExpression();
    this.semicolon();
    return this.finishNode(node, "ThrowStatement")
  };

  // Reused empty array added for node fields that are always empty.

  var empty$1 = [];

  pp$8.parseCatchClauseParam = function() {
    var param = this.parseBindingAtom();
    var simple = param.type === "Identifier";
    this.enterScope(simple ? SCOPE_SIMPLE_CATCH : 0);
    this.checkLValPattern(param, simple ? BIND_SIMPLE_CATCH : BIND_LEXICAL);
    this.expect(types$1.parenR);

    return param
  };

  pp$8.parseTryStatement = function(node) {
    this.next();
    node.block = this.parseBlock();
    node.handler = null;
    if (this.type === types$1._catch) {
      var clause = this.startNode();
      this.next();
      if (this.eat(types$1.parenL)) {
        clause.param = this.parseCatchClauseParam();
      } else {
        if (this.options.ecmaVersion < 10) { this.unexpected(); }
        clause.param = null;
        this.enterScope(0);
      }
      clause.body = this.parseBlock(false);
      this.exitScope();
      node.handler = this.finishNode(clause, "CatchClause");
    }
    node.finalizer = this.eat(types$1._finally) ? this.parseBlock() : null;
    if (!node.handler && !node.finalizer)
      { this.raise(node.start, "Missing catch or finally clause"); }
    return this.finishNode(node, "TryStatement")
  };

  pp$8.parseVarStatement = function(node, kind, allowMissingInitializer) {
    this.next();
    this.parseVar(node, false, kind, allowMissingInitializer);
    this.semicolon();
    return this.finishNode(node, "VariableDeclaration")
  };

  pp$8.parseWhileStatement = function(node) {
    this.next();
    node.test = this.parseParenExpression();
    this.labels.push(loopLabel);
    node.body = this.parseStatement("while");
    this.labels.pop();
    return this.finishNode(node, "WhileStatement")
  };

  pp$8.parseWithStatement = function(node) {
    if (this.strict) { this.raise(this.start, "'with' in strict mode"); }
    this.next();
    node.object = this.parseParenExpression();
    node.body = this.parseStatement("with");
    return this.finishNode(node, "WithStatement")
  };

  pp$8.parseEmptyStatement = function(node) {
    this.next();
    return this.finishNode(node, "EmptyStatement")
  };

  pp$8.parseLabeledStatement = function(node, maybeName, expr, context) {
    for (var i$1 = 0, list = this.labels; i$1 < list.length; i$1 += 1)
      {
      var label = list[i$1];

      if (label.name === maybeName)
        { this.raise(expr.start, "Label '" + maybeName + "' is already declared");
    } }
    var kind = this.type.isLoop ? "loop" : this.type === types$1._switch ? "switch" : null;
    for (var i = this.labels.length - 1; i >= 0; i--) {
      var label$1 = this.labels[i];
      if (label$1.statementStart === node.start) {
        // Update information about previous labels on this node
        label$1.statementStart = this.start;
        label$1.kind = kind;
      } else { break }
    }
    this.labels.push({name: maybeName, kind: kind, statementStart: this.start});
    node.body = this.parseStatement(context ? context.indexOf("label") === -1 ? context + "label" : context : "label");
    this.labels.pop();
    node.label = expr;
    return this.finishNode(node, "LabeledStatement")
  };

  pp$8.parseExpressionStatement = function(node, expr) {
    node.expression = expr;
    this.semicolon();
    return this.finishNode(node, "ExpressionStatement")
  };

  // Parse a semicolon-enclosed block of statements, handling `"use
  // strict"` declarations when `allowStrict` is true (used for
  // function bodies).

  pp$8.parseBlock = function(createNewLexicalScope, node, exitStrict) {
    if ( createNewLexicalScope === void 0 ) createNewLexicalScope = true;
    if ( node === void 0 ) node = this.startNode();

    node.body = [];
    this.expect(types$1.braceL);
    if (createNewLexicalScope) { this.enterScope(0); }
    while (this.type !== types$1.braceR) {
      var stmt = this.parseStatement(null);
      node.body.push(stmt);
    }
    if (exitStrict) { this.strict = false; }
    this.next();
    if (createNewLexicalScope) { this.exitScope(); }
    return this.finishNode(node, "BlockStatement")
  };

  // Parse a regular `for` loop. The disambiguation code in
  // `parseStatement` will already have parsed the init statement or
  // expression.

  pp$8.parseFor = function(node, init) {
    node.init = init;
    this.expect(types$1.semi);
    node.test = this.type === types$1.semi ? null : this.parseExpression();
    this.expect(types$1.semi);
    node.update = this.type === types$1.parenR ? null : this.parseExpression();
    this.expect(types$1.parenR);
    node.body = this.parseStatement("for");
    this.exitScope();
    this.labels.pop();
    return this.finishNode(node, "ForStatement")
  };

  // Parse a `for`/`in` and `for`/`of` loop, which are almost
  // same from parser's perspective.

  pp$8.parseForIn = function(node, init) {
    var isForIn = this.type === types$1._in;
    this.next();

    if (
      init.type === "VariableDeclaration" &&
      init.declarations[0].init != null &&
      (
        !isForIn ||
        this.options.ecmaVersion < 8 ||
        this.strict ||
        init.kind !== "var" ||
        init.declarations[0].id.type !== "Identifier"
      )
    ) {
      this.raise(
        init.start,
        ((isForIn ? "for-in" : "for-of") + " loop variable declaration may not have an initializer")
      );
    }
    node.left = init;
    node.right = isForIn ? this.parseExpression() : this.parseMaybeAssign();
    this.expect(types$1.parenR);
    node.body = this.parseStatement("for");
    this.exitScope();
    this.labels.pop();
    return this.finishNode(node, isForIn ? "ForInStatement" : "ForOfStatement")
  };

  // Parse a list of variable declarations.

  pp$8.parseVar = function(node, isFor, kind, allowMissingInitializer) {
    node.declarations = [];
    node.kind = kind;
    for (;;) {
      var decl = this.startNode();
      this.parseVarId(decl, kind);
      if (this.eat(types$1.eq)) {
        decl.init = this.parseMaybeAssign(isFor);
      } else if (!allowMissingInitializer && kind === "const" && !(this.type === types$1._in || (this.options.ecmaVersion >= 6 && this.isContextual("of")))) {
        this.unexpected();
      } else if (!allowMissingInitializer && decl.id.type !== "Identifier" && !(isFor && (this.type === types$1._in || this.isContextual("of")))) {
        this.raise(this.lastTokEnd, "Complex binding patterns require an initialization value");
      } else {
        decl.init = null;
      }
      node.declarations.push(this.finishNode(decl, "VariableDeclarator"));
      if (!this.eat(types$1.comma)) { break }
    }
    return node
  };

  pp$8.parseVarId = function(decl, kind) {
    decl.id = this.parseBindingAtom();
    this.checkLValPattern(decl.id, kind === "var" ? BIND_VAR : BIND_LEXICAL, false);
  };

  var FUNC_STATEMENT = 1, FUNC_HANGING_STATEMENT = 2, FUNC_NULLABLE_ID = 4;

  // Parse a function declaration or literal (depending on the
  // `statement & FUNC_STATEMENT`).

  // Remove `allowExpressionBody` for 7.0.0, as it is only called with false
  pp$8.parseFunction = function(node, statement, allowExpressionBody, isAsync, forInit) {
    this.initFunction(node);
    if (this.options.ecmaVersion >= 9 || this.options.ecmaVersion >= 6 && !isAsync) {
      if (this.type === types$1.star && (statement & FUNC_HANGING_STATEMENT))
        { this.unexpected(); }
      node.generator = this.eat(types$1.star);
    }
    if (this.options.ecmaVersion >= 8)
      { node.async = !!isAsync; }

    if (statement & FUNC_STATEMENT) {
      node.id = (statement & FUNC_NULLABLE_ID) && this.type !== types$1.name ? null : this.parseIdent();
      if (node.id && !(statement & FUNC_HANGING_STATEMENT))
        // If it is a regular function declaration in sloppy mode, then it is
        // subject to Annex B semantics (BIND_FUNCTION). Otherwise, the binding
        // mode depends on properties of the current scope (see
        // treatFunctionsAsVar).
        { this.checkLValSimple(node.id, (this.strict || node.generator || node.async) ? this.treatFunctionsAsVar ? BIND_VAR : BIND_LEXICAL : BIND_FUNCTION); }
    }

    var oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldAwaitIdentPos = this.awaitIdentPos;
    this.yieldPos = 0;
    this.awaitPos = 0;
    this.awaitIdentPos = 0;
    this.enterScope(functionFlags(node.async, node.generator));

    if (!(statement & FUNC_STATEMENT))
      { node.id = this.type === types$1.name ? this.parseIdent() : null; }

    this.parseFunctionParams(node);
    this.parseFunctionBody(node, allowExpressionBody, false, forInit);

    this.yieldPos = oldYieldPos;
    this.awaitPos = oldAwaitPos;
    this.awaitIdentPos = oldAwaitIdentPos;
    return this.finishNode(node, (statement & FUNC_STATEMENT) ? "FunctionDeclaration" : "FunctionExpression")
  };

  pp$8.parseFunctionParams = function(node) {
    this.expect(types$1.parenL);
    node.params = this.parseBindingList(types$1.parenR, false, this.options.ecmaVersion >= 8);
    this.checkYieldAwaitInDefaultParams();
  };

  // Parse a class declaration or literal (depending on the
  // `isStatement` parameter).

  pp$8.parseClass = function(node, isStatement) {
    this.next();

    // ecma-262 14.6 Class Definitions
    // A class definition is always strict mode code.
    var oldStrict = this.strict;
    this.strict = true;

    this.parseClassId(node, isStatement);
    this.parseClassSuper(node);
    var privateNameMap = this.enterClassBody();
    var classBody = this.startNode();
    var hadConstructor = false;
    classBody.body = [];
    this.expect(types$1.braceL);
    while (this.type !== types$1.braceR) {
      var element = this.parseClassElement(node.superClass !== null);
      if (element) {
        classBody.body.push(element);
        if (element.type === "MethodDefinition" && element.kind === "constructor") {
          if (hadConstructor) { this.raiseRecoverable(element.start, "Duplicate constructor in the same class"); }
          hadConstructor = true;
        } else if (element.key && element.key.type === "PrivateIdentifier" && isPrivateNameConflicted(privateNameMap, element)) {
          this.raiseRecoverable(element.key.start, ("Identifier '#" + (element.key.name) + "' has already been declared"));
        }
      }
    }
    this.strict = oldStrict;
    this.next();
    node.body = this.finishNode(classBody, "ClassBody");
    this.exitClassBody();
    return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")
  };

  pp$8.parseClassElement = function(constructorAllowsSuper) {
    if (this.eat(types$1.semi)) { return null }

    var ecmaVersion = this.options.ecmaVersion;
    var node = this.startNode();
    var keyName = "";
    var isGenerator = false;
    var isAsync = false;
    var kind = "method";
    var isStatic = false;

    if (this.eatContextual("static")) {
      // Parse static init block
      if (ecmaVersion >= 13 && this.eat(types$1.braceL)) {
        this.parseClassStaticBlock(node);
        return node
      }
      if (this.isClassElementNameStart() || this.type === types$1.star) {
        isStatic = true;
      } else {
        keyName = "static";
      }
    }
    node.static = isStatic;
    if (!keyName && ecmaVersion >= 8 && this.eatContextual("async")) {
      if ((this.isClassElementNameStart() || this.type === types$1.star) && !this.canInsertSemicolon()) {
        isAsync = true;
      } else {
        keyName = "async";
      }
    }
    if (!keyName && (ecmaVersion >= 9 || !isAsync) && this.eat(types$1.star)) {
      isGenerator = true;
    }
    if (!keyName && !isAsync && !isGenerator) {
      var lastValue = this.value;
      if (this.eatContextual("get") || this.eatContextual("set")) {
        if (this.isClassElementNameStart()) {
          kind = lastValue;
        } else {
          keyName = lastValue;
        }
      }
    }

    // Parse element name
    if (keyName) {
      // 'async', 'get', 'set', or 'static' were not a keyword contextually.
      // The last token is any of those. Make it the element name.
      node.computed = false;
      node.key = this.startNodeAt(this.lastTokStart, this.lastTokStartLoc);
      node.key.name = keyName;
      this.finishNode(node.key, "Identifier");
    } else {
      this.parseClassElementName(node);
    }

    // Parse element value
    if (ecmaVersion < 13 || this.type === types$1.parenL || kind !== "method" || isGenerator || isAsync) {
      var isConstructor = !node.static && checkKeyName(node, "constructor");
      var allowsDirectSuper = isConstructor && constructorAllowsSuper;
      // Couldn't move this check into the 'parseClassMethod' method for backward compatibility.
      if (isConstructor && kind !== "method") { this.raise(node.key.start, "Constructor can't have get/set modifier"); }
      node.kind = isConstructor ? "constructor" : kind;
      this.parseClassMethod(node, isGenerator, isAsync, allowsDirectSuper);
    } else {
      this.parseClassField(node);
    }

    return node
  };

  pp$8.isClassElementNameStart = function() {
    return (
      this.type === types$1.name ||
      this.type === types$1.privateId ||
      this.type === types$1.num ||
      this.type === types$1.string ||
      this.type === types$1.bracketL ||
      this.type.keyword
    )
  };

  pp$8.parseClassElementName = function(element) {
    if (this.type === types$1.privateId) {
      if (this.value === "constructor") {
        this.raise(this.start, "Classes can't have an element named '#constructor'");
      }
      element.computed = false;
      element.key = this.parsePrivateIdent();
    } else {
      this.parsePropertyName(element);
    }
  };

  pp$8.parseClassMethod = function(method, isGenerator, isAsync, allowsDirectSuper) {
    // Check key and flags
    var key = method.key;
    if (method.kind === "constructor") {
      if (isGenerator) { this.raise(key.start, "Constructor can't be a generator"); }
      if (isAsync) { this.raise(key.start, "Constructor can't be an async method"); }
    } else if (method.static && checkKeyName(method, "prototype")) {
      this.raise(key.start, "Classes may not have a static property named prototype");
    }

    // Parse value
    var value = method.value = this.parseMethod(isGenerator, isAsync, allowsDirectSuper);

    // Check value
    if (method.kind === "get" && value.params.length !== 0)
      { this.raiseRecoverable(value.start, "getter should have no params"); }
    if (method.kind === "set" && value.params.length !== 1)
      { this.raiseRecoverable(value.start, "setter should have exactly one param"); }
    if (method.kind === "set" && value.params[0].type === "RestElement")
      { this.raiseRecoverable(value.params[0].start, "Setter cannot use rest params"); }

    return this.finishNode(method, "MethodDefinition")
  };

  pp$8.parseClassField = function(field) {
    if (checkKeyName(field, "constructor")) {
      this.raise(field.key.start, "Classes can't have a field named 'constructor'");
    } else if (field.static && checkKeyName(field, "prototype")) {
      this.raise(field.key.start, "Classes can't have a static field named 'prototype'");
    }

    if (this.eat(types$1.eq)) {
      // To raise SyntaxError if 'arguments' exists in the initializer.
      var scope = this.currentThisScope();
      var inClassFieldInit = scope.inClassFieldInit;
      scope.inClassFieldInit = true;
      field.value = this.parseMaybeAssign();
      scope.inClassFieldInit = inClassFieldInit;
    } else {
      field.value = null;
    }
    this.semicolon();

    return this.finishNode(field, "PropertyDefinition")
  };

  pp$8.parseClassStaticBlock = function(node) {
    node.body = [];

    var oldLabels = this.labels;
    this.labels = [];
    this.enterScope(SCOPE_CLASS_STATIC_BLOCK | SCOPE_SUPER);
    while (this.type !== types$1.braceR) {
      var stmt = this.parseStatement(null);
      node.body.push(stmt);
    }
    this.next();
    this.exitScope();
    this.labels = oldLabels;

    return this.finishNode(node, "StaticBlock")
  };

  pp$8.parseClassId = function(node, isStatement) {
    if (this.type === types$1.name) {
      node.id = this.parseIdent();
      if (isStatement)
        { this.checkLValSimple(node.id, BIND_LEXICAL, false); }
    } else {
      if (isStatement === true)
        { this.unexpected(); }
      node.id = null;
    }
  };

  pp$8.parseClassSuper = function(node) {
    node.superClass = this.eat(types$1._extends) ? this.parseExprSubscripts(null, false) : null;
  };

  pp$8.enterClassBody = function() {
    var element = {declared: Object.create(null), used: []};
    this.privateNameStack.push(element);
    return element.declared
  };

  pp$8.exitClassBody = function() {
    var ref = this.privateNameStack.pop();
    var declared = ref.declared;
    var used = ref.used;
    if (!this.options.checkPrivateFields) { return }
    var len = this.privateNameStack.length;
    var parent = len === 0 ? null : this.privateNameStack[len - 1];
    for (var i = 0; i < used.length; ++i) {
      var id = used[i];
      if (!hasOwn(declared, id.name)) {
        if (parent) {
          parent.used.push(id);
        } else {
          this.raiseRecoverable(id.start, ("Private field '#" + (id.name) + "' must be declared in an enclosing class"));
        }
      }
    }
  };

  function isPrivateNameConflicted(privateNameMap, element) {
    var name = element.key.name;
    var curr = privateNameMap[name];

    var next = "true";
    if (element.type === "MethodDefinition" && (element.kind === "get" || element.kind === "set")) {
      next = (element.static ? "s" : "i") + element.kind;
    }

    // `class { get #a(){}; static set #a(_){} }` is also conflict.
    if (
      curr === "iget" && next === "iset" ||
      curr === "iset" && next === "iget" ||
      curr === "sget" && next === "sset" ||
      curr === "sset" && next === "sget"
    ) {
      privateNameMap[name] = "true";
      return false
    } else if (!curr) {
      privateNameMap[name] = next;
      return false
    } else {
      return true
    }
  }

  function checkKeyName(node, name) {
    var computed = node.computed;
    var key = node.key;
    return !computed && (
      key.type === "Identifier" && key.name === name ||
      key.type === "Literal" && key.value === name
    )
  }

  // Parses module export declaration.

  pp$8.parseExportAllDeclaration = function(node, exports) {
    if (this.options.ecmaVersion >= 11) {
      if (this.eatContextual("as")) {
        node.exported = this.parseModuleExportName();
        this.checkExport(exports, node.exported, this.lastTokStart);
      } else {
        node.exported = null;
      }
    }
    this.expectContextual("from");
    if (this.type !== types$1.string) { this.unexpected(); }
    node.source = this.parseExprAtom();
    this.semicolon();
    return this.finishNode(node, "ExportAllDeclaration")
  };

  pp$8.parseExport = function(node, exports) {
    this.next();
    // export * from '...'
    if (this.eat(types$1.star)) {
      return this.parseExportAllDeclaration(node, exports)
    }
    if (this.eat(types$1._default)) { // export default ...
      this.checkExport(exports, "default", this.lastTokStart);
      node.declaration = this.parseExportDefaultDeclaration();
      return this.finishNode(node, "ExportDefaultDeclaration")
    }
    // export var|const|let|function|class ...
    if (this.shouldParseExportStatement()) {
      node.declaration = this.parseExportDeclaration(node);
      if (node.declaration.type === "VariableDeclaration")
        { this.checkVariableExport(exports, node.declaration.declarations); }
      else
        { this.checkExport(exports, node.declaration.id, node.declaration.id.start); }
      node.specifiers = [];
      node.source = null;
    } else { // export { x, y as z } [from '...']
      node.declaration = null;
      node.specifiers = this.parseExportSpecifiers(exports);
      if (this.eatContextual("from")) {
        if (this.type !== types$1.string) { this.unexpected(); }
        node.source = this.parseExprAtom();
      } else {
        for (var i = 0, list = node.specifiers; i < list.length; i += 1) {
          // check for keywords used as local names
          var spec = list[i];

          this.checkUnreserved(spec.local);
          // check if export is defined
          this.checkLocalExport(spec.local);

          if (spec.local.type === "Literal") {
            this.raise(spec.local.start, "A string literal cannot be used as an exported binding without `from`.");
          }
        }

        node.source = null;
      }
      this.semicolon();
    }
    return this.finishNode(node, "ExportNamedDeclaration")
  };

  pp$8.parseExportDeclaration = function(node) {
    return this.parseStatement(null)
  };

  pp$8.parseExportDefaultDeclaration = function() {
    var isAsync;
    if (this.type === types$1._function || (isAsync = this.isAsyncFunction())) {
      var fNode = this.startNode();
      this.next();
      if (isAsync) { this.next(); }
      return this.parseFunction(fNode, FUNC_STATEMENT | FUNC_NULLABLE_ID, false, isAsync)
    } else if (this.type === types$1._class) {
      var cNode = this.startNode();
      return this.parseClass(cNode, "nullableID")
    } else {
      var declaration = this.parseMaybeAssign();
      this.semicolon();
      return declaration
    }
  };

  pp$8.checkExport = function(exports, name, pos) {
    if (!exports) { return }
    if (typeof name !== "string")
      { name = name.type === "Identifier" ? name.name : name.value; }
    if (hasOwn(exports, name))
      { this.raiseRecoverable(pos, "Duplicate export '" + name + "'"); }
    exports[name] = true;
  };

  pp$8.checkPatternExport = function(exports, pat) {
    var type = pat.type;
    if (type === "Identifier")
      { this.checkExport(exports, pat, pat.start); }
    else if (type === "ObjectPattern")
      { for (var i = 0, list = pat.properties; i < list.length; i += 1)
        {
          var prop = list[i];

          this.checkPatternExport(exports, prop);
        } }
    else if (type === "ArrayPattern")
      { for (var i$1 = 0, list$1 = pat.elements; i$1 < list$1.length; i$1 += 1) {
        var elt = list$1[i$1];

          if (elt) { this.checkPatternExport(exports, elt); }
      } }
    else if (type === "Property")
      { this.checkPatternExport(exports, pat.value); }
    else if (type === "AssignmentPattern")
      { this.checkPatternExport(exports, pat.left); }
    else if (type === "RestElement")
      { this.checkPatternExport(exports, pat.argument); }
  };

  pp$8.checkVariableExport = function(exports, decls) {
    if (!exports) { return }
    for (var i = 0, list = decls; i < list.length; i += 1)
      {
      var decl = list[i];

      this.checkPatternExport(exports, decl.id);
    }
  };

  pp$8.shouldParseExportStatement = function() {
    return this.type.keyword === "var" ||
      this.type.keyword === "const" ||
      this.type.keyword === "class" ||
      this.type.keyword === "function" ||
      this.isLet() ||
      this.isAsyncFunction()
  };

  // Parses a comma-separated list of module exports.

  pp$8.parseExportSpecifier = function(exports) {
    var node = this.startNode();
    node.local = this.parseModuleExportName();

    node.exported = this.eatContextual("as") ? this.parseModuleExportName() : node.local;
    this.checkExport(
      exports,
      node.exported,
      node.exported.start
    );

    return this.finishNode(node, "ExportSpecifier")
  };

  pp$8.parseExportSpecifiers = function(exports) {
    var nodes = [], first = true;
    // export { x, y as z } [from '...']
    this.expect(types$1.braceL);
    while (!this.eat(types$1.braceR)) {
      if (!first) {
        this.expect(types$1.comma);
        if (this.afterTrailingComma(types$1.braceR)) { break }
      } else { first = false; }

      nodes.push(this.parseExportSpecifier(exports));
    }
    return nodes
  };

  // Parses import declaration.

  pp$8.parseImport = function(node) {
    this.next();

    // import '...'
    if (this.type === types$1.string) {
      node.specifiers = empty$1;
      node.source = this.parseExprAtom();
    } else {
      node.specifiers = this.parseImportSpecifiers();
      this.expectContextual("from");
      node.source = this.type === types$1.string ? this.parseExprAtom() : this.unexpected();
    }
    this.semicolon();
    return this.finishNode(node, "ImportDeclaration")
  };

  // Parses a comma-separated list of module imports.

  pp$8.parseImportSpecifier = function() {
    var node = this.startNode();
    node.imported = this.parseModuleExportName();

    if (this.eatContextual("as")) {
      node.local = this.parseIdent();
    } else {
      this.checkUnreserved(node.imported);
      node.local = node.imported;
    }
    this.checkLValSimple(node.local, BIND_LEXICAL);

    return this.finishNode(node, "ImportSpecifier")
  };

  pp$8.parseImportDefaultSpecifier = function() {
    // import defaultObj, { x, y as z } from '...'
    var node = this.startNode();
    node.local = this.parseIdent();
    this.checkLValSimple(node.local, BIND_LEXICAL);
    return this.finishNode(node, "ImportDefaultSpecifier")
  };

  pp$8.parseImportNamespaceSpecifier = function() {
    var node = this.startNode();
    this.next();
    this.expectContextual("as");
    node.local = this.parseIdent();
    this.checkLValSimple(node.local, BIND_LEXICAL);
    return this.finishNode(node, "ImportNamespaceSpecifier")
  };

  pp$8.parseImportSpecifiers = function() {
    var nodes = [], first = true;
    if (this.type === types$1.name) {
      nodes.push(this.parseImportDefaultSpecifier());
      if (!this.eat(types$1.comma)) { return nodes }
    }
    if (this.type === types$1.star) {
      nodes.push(this.parseImportNamespaceSpecifier());
      return nodes
    }
    this.expect(types$1.braceL);
    while (!this.eat(types$1.braceR)) {
      if (!first) {
        this.expect(types$1.comma);
        if (this.afterTrailingComma(types$1.braceR)) { break }
      } else { first = false; }

      nodes.push(this.parseImportSpecifier());
    }
    return nodes
  };

  pp$8.parseModuleExportName = function() {
    if (this.options.ecmaVersion >= 13 && this.type === types$1.string) {
      var stringLiteral = this.parseLiteral(this.value);
      if (loneSurrogate.test(stringLiteral.value)) {
        this.raise(stringLiteral.start, "An export name cannot include a lone surrogate.");
      }
      return stringLiteral
    }
    return this.parseIdent(true)
  };

  // Set `ExpressionStatement#directive` property for directive prologues.
  pp$8.adaptDirectivePrologue = function(statements) {
    for (var i = 0; i < statements.length && this.isDirectiveCandidate(statements[i]); ++i) {
      statements[i].directive = statements[i].expression.raw.slice(1, -1);
    }
  };
  pp$8.isDirectiveCandidate = function(statement) {
    return (
      this.options.ecmaVersion >= 5 &&
      statement.type === "ExpressionStatement" &&
      statement.expression.type === "Literal" &&
      typeof statement.expression.value === "string" &&
      // Reject parenthesized strings.
      (this.input[statement.start] === "\"" || this.input[statement.start] === "'")
    )
  };

  var pp$7 = Parser.prototype;

  // Convert existing expression atom to assignable pattern
  // if possible.

  pp$7.toAssignable = function(node, isBinding, refDestructuringErrors) {
    if (this.options.ecmaVersion >= 6 && node) {
      switch (node.type) {
      case "Identifier":
        if (this.inAsync && node.name === "await")
          { this.raise(node.start, "Cannot use 'await' as identifier inside an async function"); }
        break

      case "ObjectPattern":
      case "ArrayPattern":
      case "AssignmentPattern":
      case "RestElement":
        break

      case "ObjectExpression":
        node.type = "ObjectPattern";
        if (refDestructuringErrors) { this.checkPatternErrors(refDestructuringErrors, true); }
        for (var i = 0, list = node.properties; i < list.length; i += 1) {
          var prop = list[i];

        this.toAssignable(prop, isBinding);
          // Early error:
          //   AssignmentRestProperty[Yield, Await] :
          //     `...` DestructuringAssignmentTarget[Yield, Await]
          //
          //   It is a Syntax Error if |DestructuringAssignmentTarget| is an |ArrayLiteral| or an |ObjectLiteral|.
          if (
            prop.type === "RestElement" &&
            (prop.argument.type === "ArrayPattern" || prop.argument.type === "ObjectPattern")
          ) {
            this.raise(prop.argument.start, "Unexpected token");
          }
        }
        break

      case "Property":
        // AssignmentProperty has type === "Property"
        if (node.kind !== "init") { this.raise(node.key.start, "Object pattern can't contain getter or setter"); }
        this.toAssignable(node.value, isBinding);
        break

      case "ArrayExpression":
        node.type = "ArrayPattern";
        if (refDestructuringErrors) { this.checkPatternErrors(refDestructuringErrors, true); }
        this.toAssignableList(node.elements, isBinding);
        break

      case "SpreadElement":
        node.type = "RestElement";
        this.toAssignable(node.argument, isBinding);
        if (node.argument.type === "AssignmentPattern")
          { this.raise(node.argument.start, "Rest elements cannot have a default value"); }
        break

      case "AssignmentExpression":
        if (node.operator !== "=") { this.raise(node.left.end, "Only '=' operator can be used for specifying default value."); }
        node.type = "AssignmentPattern";
        delete node.operator;
        this.toAssignable(node.left, isBinding);
        break

      case "ParenthesizedExpression":
        this.toAssignable(node.expression, isBinding, refDestructuringErrors);
        break

      case "ChainExpression":
        this.raiseRecoverable(node.start, "Optional chaining cannot appear in left-hand side");
        break

      case "MemberExpression":
        if (!isBinding) { break }

      default:
        this.raise(node.start, "Assigning to rvalue");
      }
    } else if (refDestructuringErrors) { this.checkPatternErrors(refDestructuringErrors, true); }
    return node
  };

  // Convert list of expression atoms to binding list.

  pp$7.toAssignableList = function(exprList, isBinding) {
    var end = exprList.length;
    for (var i = 0; i < end; i++) {
      var elt = exprList[i];
      if (elt) { this.toAssignable(elt, isBinding); }
    }
    if (end) {
      var last = exprList[end - 1];
      if (this.options.ecmaVersion === 6 && isBinding && last && last.type === "RestElement" && last.argument.type !== "Identifier")
        { this.unexpected(last.argument.start); }
    }
    return exprList
  };

  // Parses spread element.

  pp$7.parseSpread = function(refDestructuringErrors) {
    var node = this.startNode();
    this.next();
    node.argument = this.parseMaybeAssign(false, refDestructuringErrors);
    return this.finishNode(node, "SpreadElement")
  };

  pp$7.parseRestBinding = function() {
    var node = this.startNode();
    this.next();

    // RestElement inside of a function parameter must be an identifier
    if (this.options.ecmaVersion === 6 && this.type !== types$1.name)
      { this.unexpected(); }

    node.argument = this.parseBindingAtom();

    return this.finishNode(node, "RestElement")
  };

  // Parses lvalue (assignable) atom.

  pp$7.parseBindingAtom = function() {
    if (this.options.ecmaVersion >= 6) {
      switch (this.type) {
      case types$1.bracketL:
        var node = this.startNode();
        this.next();
        node.elements = this.parseBindingList(types$1.bracketR, true, true);
        return this.finishNode(node, "ArrayPattern")

      case types$1.braceL:
        return this.parseObj(true)
      }
    }
    return this.parseIdent()
  };

  pp$7.parseBindingList = function(close, allowEmpty, allowTrailingComma, allowModifiers) {
    var elts = [], first = true;
    while (!this.eat(close)) {
      if (first) { first = false; }
      else { this.expect(types$1.comma); }
      if (allowEmpty && this.type === types$1.comma) {
        elts.push(null);
      } else if (allowTrailingComma && this.afterTrailingComma(close)) {
        break
      } else if (this.type === types$1.ellipsis) {
        var rest = this.parseRestBinding();
        this.parseBindingListItem(rest);
        elts.push(rest);
        if (this.type === types$1.comma) { this.raiseRecoverable(this.start, "Comma is not permitted after the rest element"); }
        this.expect(close);
        break
      } else {
        elts.push(this.parseAssignableListItem(allowModifiers));
      }
    }
    return elts
  };

  pp$7.parseAssignableListItem = function(allowModifiers) {
    var elem = this.parseMaybeDefault(this.start, this.startLoc);
    this.parseBindingListItem(elem);
    return elem
  };

  pp$7.parseBindingListItem = function(param) {
    return param
  };

  // Parses assignment pattern around given atom if possible.

  pp$7.parseMaybeDefault = function(startPos, startLoc, left) {
    left = left || this.parseBindingAtom();
    if (this.options.ecmaVersion < 6 || !this.eat(types$1.eq)) { return left }
    var node = this.startNodeAt(startPos, startLoc);
    node.left = left;
    node.right = this.parseMaybeAssign();
    return this.finishNode(node, "AssignmentPattern")
  };

  // The following three functions all verify that a node is an lvalue —
  // something that can be bound, or assigned to. In order to do so, they perform
  // a variety of checks:
  //
  // - Check that none of the bound/assigned-to identifiers are reserved words.
  // - Record name declarations for bindings in the appropriate scope.
  // - Check duplicate argument names, if checkClashes is set.
  //
  // If a complex binding pattern is encountered (e.g., object and array
  // destructuring), the entire pattern is recursively checked.
  //
  // There are three versions of checkLVal*() appropriate for different
  // circumstances:
  //
  // - checkLValSimple() shall be used if the syntactic construct supports
  //   nothing other than identifiers and member expressions. Parenthesized
  //   expressions are also correctly handled. This is generally appropriate for
  //   constructs for which the spec says
  //
  //   > It is a Syntax Error if AssignmentTargetType of [the production] is not
  //   > simple.
  //
  //   It is also appropriate for checking if an identifier is valid and not
  //   defined elsewhere, like import declarations or function/class identifiers.
  //
  //   Examples where this is used include:
  //     a += …;
  //     import a from '…';
  //   where a is the node to be checked.
  //
  // - checkLValPattern() shall be used if the syntactic construct supports
  //   anything checkLValSimple() supports, as well as object and array
  //   destructuring patterns. This is generally appropriate for constructs for
  //   which the spec says
  //
  //   > It is a Syntax Error if [the production] is neither an ObjectLiteral nor
  //   > an ArrayLiteral and AssignmentTargetType of [the production] is not
  //   > simple.
  //
  //   Examples where this is used include:
  //     (a = …);
  //     const a = …;
  //     try { … } catch (a) { … }
  //   where a is the node to be checked.
  //
  // - checkLValInnerPattern() shall be used if the syntactic construct supports
  //   anything checkLValPattern() supports, as well as default assignment
  //   patterns, rest elements, and other constructs that may appear within an
  //   object or array destructuring pattern.
  //
  //   As a special case, function parameters also use checkLValInnerPattern(),
  //   as they also support defaults and rest constructs.
  //
  // These functions deliberately support both assignment and binding constructs,
  // as the logic for both is exceedingly similar. If the node is the target of
  // an assignment, then bindingType should be set to BIND_NONE. Otherwise, it
  // should be set to the appropriate BIND_* constant, like BIND_VAR or
  // BIND_LEXICAL.
  //
  // If the function is called with a non-BIND_NONE bindingType, then
  // additionally a checkClashes object may be specified to allow checking for
  // duplicate argument names. checkClashes is ignored if the provided construct
  // is an assignment (i.e., bindingType is BIND_NONE).

  pp$7.checkLValSimple = function(expr, bindingType, checkClashes) {
    if ( bindingType === void 0 ) bindingType = BIND_NONE;

    var isBind = bindingType !== BIND_NONE;

    switch (expr.type) {
    case "Identifier":
      if (this.strict && this.reservedWordsStrictBind.test(expr.name))
        { this.raiseRecoverable(expr.start, (isBind ? "Binding " : "Assigning to ") + expr.name + " in strict mode"); }
      if (isBind) {
        if (bindingType === BIND_LEXICAL && expr.name === "let")
          { this.raiseRecoverable(expr.start, "let is disallowed as a lexically bound name"); }
        if (checkClashes) {
          if (hasOwn(checkClashes, expr.name))
            { this.raiseRecoverable(expr.start, "Argument name clash"); }
          checkClashes[expr.name] = true;
        }
        if (bindingType !== BIND_OUTSIDE) { this.declareName(expr.name, bindingType, expr.start); }
      }
      break

    case "ChainExpression":
      this.raiseRecoverable(expr.start, "Optional chaining cannot appear in left-hand side");
      break

    case "MemberExpression":
      if (isBind) { this.raiseRecoverable(expr.start, "Binding member expression"); }
      break

    case "ParenthesizedExpression":
      if (isBind) { this.raiseRecoverable(expr.start, "Binding parenthesized expression"); }
      return this.checkLValSimple(expr.expression, bindingType, checkClashes)

    default:
      this.raise(expr.start, (isBind ? "Binding" : "Assigning to") + " rvalue");
    }
  };

  pp$7.checkLValPattern = function(expr, bindingType, checkClashes) {
    if ( bindingType === void 0 ) bindingType = BIND_NONE;

    switch (expr.type) {
    case "ObjectPattern":
      for (var i = 0, list = expr.properties; i < list.length; i += 1) {
        var prop = list[i];

      this.checkLValInnerPattern(prop, bindingType, checkClashes);
      }
      break

    case "ArrayPattern":
      for (var i$1 = 0, list$1 = expr.elements; i$1 < list$1.length; i$1 += 1) {
        var elem = list$1[i$1];

      if (elem) { this.checkLValInnerPattern(elem, bindingType, checkClashes); }
      }
      break

    default:
      this.checkLValSimple(expr, bindingType, checkClashes);
    }
  };

  pp$7.checkLValInnerPattern = function(expr, bindingType, checkClashes) {
    if ( bindingType === void 0 ) bindingType = BIND_NONE;

    switch (expr.type) {
    case "Property":
      // AssignmentProperty has type === "Property"
      this.checkLValInnerPattern(expr.value, bindingType, checkClashes);
      break

    case "AssignmentPattern":
      this.checkLValPattern(expr.left, bindingType, checkClashes);
      break

    case "RestElement":
      this.checkLValPattern(expr.argument, bindingType, checkClashes);
      break

    default:
      this.checkLValPattern(expr, bindingType, checkClashes);
    }
  };

  // The algorithm used to determine whether a regexp can appear at a
  // given point in the program is loosely based on sweet.js' approach.
  // See https://github.com/mozilla/sweet.js/wiki/design


  var TokContext = function TokContext(token, isExpr, preserveSpace, override, generator) {
    this.token = token;
    this.isExpr = !!isExpr;
    this.preserveSpace = !!preserveSpace;
    this.override = override;
    this.generator = !!generator;
  };

  var types = {
    b_stat: new TokContext("{", false),
    b_expr: new TokContext("{", true),
    b_tmpl: new TokContext("${", false),
    p_stat: new TokContext("(", false),
    p_expr: new TokContext("(", true),
    q_tmpl: new TokContext("`", true, true, function (p) { return p.tryReadTemplateToken(); }),
    f_stat: new TokContext("function", false),
    f_expr: new TokContext("function", true),
    f_expr_gen: new TokContext("function", true, false, null, true),
    f_gen: new TokContext("function", false, false, null, true)
  };

  var pp$6 = Parser.prototype;

  pp$6.initialContext = function() {
    return [types.b_stat]
  };

  pp$6.curContext = function() {
    return this.context[this.context.length - 1]
  };

  pp$6.braceIsBlock = function(prevType) {
    var parent = this.curContext();
    if (parent === types.f_expr || parent === types.f_stat)
      { return true }
    if (prevType === types$1.colon && (parent === types.b_stat || parent === types.b_expr))
      { return !parent.isExpr }

    // The check for `tt.name && exprAllowed` detects whether we are
    // after a `yield` or `of` construct. See the `updateContext` for
    // `tt.name`.
    if (prevType === types$1._return || prevType === types$1.name && this.exprAllowed)
      { return lineBreak.test(this.input.slice(this.lastTokEnd, this.start)) }
    if (prevType === types$1._else || prevType === types$1.semi || prevType === types$1.eof || prevType === types$1.parenR || prevType === types$1.arrow)
      { return true }
    if (prevType === types$1.braceL)
      { return parent === types.b_stat }
    if (prevType === types$1._var || prevType === types$1._const || prevType === types$1.name)
      { return false }
    return !this.exprAllowed
  };

  pp$6.inGeneratorContext = function() {
    for (var i = this.context.length - 1; i >= 1; i--) {
      var context = this.context[i];
      if (context.token === "function")
        { return context.generator }
    }
    return false
  };

  pp$6.updateContext = function(prevType) {
    var update, type = this.type;
    if (type.keyword && prevType === types$1.dot)
      { this.exprAllowed = false; }
    else if (update = type.updateContext)
      { update.call(this, prevType); }
    else
      { this.exprAllowed = type.beforeExpr; }
  };

  // Used to handle edge cases when token context could not be inferred correctly during tokenization phase

  pp$6.overrideContext = function(tokenCtx) {
    if (this.curContext() !== tokenCtx) {
      this.context[this.context.length - 1] = tokenCtx;
    }
  };

  // Token-specific context update code

  types$1.parenR.updateContext = types$1.braceR.updateContext = function() {
    if (this.context.length === 1) {
      this.exprAllowed = true;
      return
    }
    var out = this.context.pop();
    if (out === types.b_stat && this.curContext().token === "function") {
      out = this.context.pop();
    }
    this.exprAllowed = !out.isExpr;
  };

  types$1.braceL.updateContext = function(prevType) {
    this.context.push(this.braceIsBlock(prevType) ? types.b_stat : types.b_expr);
    this.exprAllowed = true;
  };

  types$1.dollarBraceL.updateContext = function() {
    this.context.push(types.b_tmpl);
    this.exprAllowed = true;
  };

  types$1.parenL.updateContext = function(prevType) {
    var statementParens = prevType === types$1._if || prevType === types$1._for || prevType === types$1._with || prevType === types$1._while;
    this.context.push(statementParens ? types.p_stat : types.p_expr);
    this.exprAllowed = true;
  };

  types$1.incDec.updateContext = function() {
    // tokExprAllowed stays unchanged
  };

  types$1._function.updateContext = types$1._class.updateContext = function(prevType) {
    if (prevType.beforeExpr && prevType !== types$1._else &&
        !(prevType === types$1.semi && this.curContext() !== types.p_stat) &&
        !(prevType === types$1._return && lineBreak.test(this.input.slice(this.lastTokEnd, this.start))) &&
        !((prevType === types$1.colon || prevType === types$1.braceL) && this.curContext() === types.b_stat))
      { this.context.push(types.f_expr); }
    else
      { this.context.push(types.f_stat); }
    this.exprAllowed = false;
  };

  types$1.colon.updateContext = function() {
    if (this.curContext().token === "function") { this.context.pop(); }
    this.exprAllowed = true;
  };

  types$1.backQuote.updateContext = function() {
    if (this.curContext() === types.q_tmpl)
      { this.context.pop(); }
    else
      { this.context.push(types.q_tmpl); }
    this.exprAllowed = false;
  };

  types$1.star.updateContext = function(prevType) {
    if (prevType === types$1._function) {
      var index = this.context.length - 1;
      if (this.context[index] === types.f_expr)
        { this.context[index] = types.f_expr_gen; }
      else
        { this.context[index] = types.f_gen; }
    }
    this.exprAllowed = true;
  };

  types$1.name.updateContext = function(prevType) {
    var allowed = false;
    if (this.options.ecmaVersion >= 6 && prevType !== types$1.dot) {
      if (this.value === "of" && !this.exprAllowed ||
          this.value === "yield" && this.inGeneratorContext())
        { allowed = true; }
    }
    this.exprAllowed = allowed;
  };

  // A recursive descent parser operates by defining functions for all
  // syntactic elements, and recursively calling those, each function
  // advancing the input stream and returning an AST node. Precedence
  // of constructs (for example, the fact that `!x[1]` means `!(x[1])`
  // instead of `(!x)[1]` is handled by the fact that the parser
  // function that parses unary prefix operators is called first, and
  // in turn calls the function that parses `[]` subscripts — that
  // way, it'll receive the node for `x[1]` already parsed, and wraps
  // *that* in the unary operator node.
  //
  // Acorn uses an [operator precedence parser][opp] to handle binary
  // operator precedence, because it is much more compact than using
  // the technique outlined above, which uses different, nesting
  // functions to specify precedence, for all of the ten binary
  // precedence levels that JavaScript defines.
  //
  // [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser


  var pp$5 = Parser.prototype;

  // Check if property name clashes with already added.
  // Object/class getters and setters are not allowed to clash —
  // either with each other or with an init property — and in
  // strict mode, init properties are also not allowed to be repeated.

  pp$5.checkPropClash = function(prop, propHash, refDestructuringErrors) {
    if (this.options.ecmaVersion >= 9 && prop.type === "SpreadElement")
      { return }
    if (this.options.ecmaVersion >= 6 && (prop.computed || prop.method || prop.shorthand))
      { return }
    var key = prop.key;
    var name;
    switch (key.type) {
    case "Identifier": name = key.name; break
    case "Literal": name = String(key.value); break
    default: return
    }
    var kind = prop.kind;
    if (this.options.ecmaVersion >= 6) {
      if (name === "__proto__" && kind === "init") {
        if (propHash.proto) {
          if (refDestructuringErrors) {
            if (refDestructuringErrors.doubleProto < 0) {
              refDestructuringErrors.doubleProto = key.start;
            }
          } else {
            this.raiseRecoverable(key.start, "Redefinition of __proto__ property");
          }
        }
        propHash.proto = true;
      }
      return
    }
    name = "$" + name;
    var other = propHash[name];
    if (other) {
      var redefinition;
      if (kind === "init") {
        redefinition = this.strict && other.init || other.get || other.set;
      } else {
        redefinition = other.init || other[kind];
      }
      if (redefinition)
        { this.raiseRecoverable(key.start, "Redefinition of property"); }
    } else {
      other = propHash[name] = {
        init: false,
        get: false,
        set: false
      };
    }
    other[kind] = true;
  };

  // ### Expression parsing

  // These nest, from the most general expression type at the top to
  // 'atomic', nondivisible expression types at the bottom. Most of
  // the functions will simply let the function(s) below them parse,
  // and, *if* the syntactic construct they handle is present, wrap
  // the AST node that the inner parser gave them in another node.

  // Parse a full expression. The optional arguments are used to
  // forbid the `in` operator (in for loops initalization expressions)
  // and provide reference for storing '=' operator inside shorthand
  // property assignment in contexts where both object expression
  // and object pattern might appear (so it's possible to raise
  // delayed syntax error at correct position).

  pp$5.parseExpression = function(forInit, refDestructuringErrors) {
    var startPos = this.start, startLoc = this.startLoc;
    var expr = this.parseMaybeAssign(forInit, refDestructuringErrors);
    if (this.type === types$1.comma) {
      var node = this.startNodeAt(startPos, startLoc);
      node.expressions = [expr];
      while (this.eat(types$1.comma)) { node.expressions.push(this.parseMaybeAssign(forInit, refDestructuringErrors)); }
      return this.finishNode(node, "SequenceExpression")
    }
    return expr
  };

  // Parse an assignment expression. This includes applications of
  // operators like `+=`.

  pp$5.parseMaybeAssign = function(forInit, refDestructuringErrors, afterLeftParse) {
    if (this.isContextual("yield")) {
      if (this.inGenerator) { return this.parseYield(forInit) }
      // The tokenizer will assume an expression is allowed after
      // `yield`, but this isn't that kind of yield
      else { this.exprAllowed = false; }
    }

    var ownDestructuringErrors = false, oldParenAssign = -1, oldTrailingComma = -1, oldDoubleProto = -1;
    if (refDestructuringErrors) {
      oldParenAssign = refDestructuringErrors.parenthesizedAssign;
      oldTrailingComma = refDestructuringErrors.trailingComma;
      oldDoubleProto = refDestructuringErrors.doubleProto;
      refDestructuringErrors.parenthesizedAssign = refDestructuringErrors.trailingComma = -1;
    } else {
      refDestructuringErrors = new DestructuringErrors;
      ownDestructuringErrors = true;
    }

    var startPos = this.start, startLoc = this.startLoc;
    if (this.type === types$1.parenL || this.type === types$1.name) {
      this.potentialArrowAt = this.start;
      this.potentialArrowInForAwait = forInit === "await";
    }
    var left = this.parseMaybeConditional(forInit, refDestructuringErrors);
    if (afterLeftParse) { left = afterLeftParse.call(this, left, startPos, startLoc); }
    if (this.type.isAssign) {
      var node = this.startNodeAt(startPos, startLoc);
      node.operator = this.value;
      if (this.type === types$1.eq)
        { left = this.toAssignable(left, false, refDestructuringErrors); }
      if (!ownDestructuringErrors) {
        refDestructuringErrors.parenthesizedAssign = refDestructuringErrors.trailingComma = refDestructuringErrors.doubleProto = -1;
      }
      if (refDestructuringErrors.shorthandAssign >= left.start)
        { refDestructuringErrors.shorthandAssign = -1; } // reset because shorthand default was used correctly
      if (this.type === types$1.eq)
        { this.checkLValPattern(left); }
      else
        { this.checkLValSimple(left); }
      node.left = left;
      this.next();
      node.right = this.parseMaybeAssign(forInit);
      if (oldDoubleProto > -1) { refDestructuringErrors.doubleProto = oldDoubleProto; }
      return this.finishNode(node, "AssignmentExpression")
    } else {
      if (ownDestructuringErrors) { this.checkExpressionErrors(refDestructuringErrors, true); }
    }
    if (oldParenAssign > -1) { refDestructuringErrors.parenthesizedAssign = oldParenAssign; }
    if (oldTrailingComma > -1) { refDestructuringErrors.trailingComma = oldTrailingComma; }
    return left
  };

  // Parse a ternary conditional (`?:`) operator.

  pp$5.parseMaybeConditional = function(forInit, refDestructuringErrors) {
    var startPos = this.start, startLoc = this.startLoc;
    var expr = this.parseExprOps(forInit, refDestructuringErrors);
    if (this.checkExpressionErrors(refDestructuringErrors)) { return expr }
    if (this.eat(types$1.question)) {
      var node = this.startNodeAt(startPos, startLoc);
      node.test = expr;
      node.consequent = this.parseMaybeAssign();
      this.expect(types$1.colon);
      node.alternate = this.parseMaybeAssign(forInit);
      return this.finishNode(node, "ConditionalExpression")
    }
    return expr
  };

  // Start the precedence parser.

  pp$5.parseExprOps = function(forInit, refDestructuringErrors) {
    var startPos = this.start, startLoc = this.startLoc;
    var expr = this.parseMaybeUnary(refDestructuringErrors, false, false, forInit);
    if (this.checkExpressionErrors(refDestructuringErrors)) { return expr }
    return expr.start === startPos && expr.type === "ArrowFunctionExpression" ? expr : this.parseExprOp(expr, startPos, startLoc, -1, forInit)
  };

  // Parse binary operators with the operator precedence parsing
  // algorithm. `left` is the left-hand side of the operator.
  // `minPrec` provides context that allows the function to stop and
  // defer further parser to one of its callers when it encounters an
  // operator that has a lower precedence than the set it is parsing.

  pp$5.parseExprOp = function(left, leftStartPos, leftStartLoc, minPrec, forInit) {
    var prec = this.type.binop;
    if (prec != null && (!forInit || this.type !== types$1._in)) {
      if (prec > minPrec) {
        var logical = this.type === types$1.logicalOR || this.type === types$1.logicalAND;
        var coalesce = this.type === types$1.coalesce;
        if (coalesce) {
          // Handle the precedence of `tt.coalesce` as equal to the range of logical expressions.
          // In other words, `node.right` shouldn't contain logical expressions in order to check the mixed error.
          prec = types$1.logicalAND.binop;
        }
        var op = this.value;
        this.next();
        var startPos = this.start, startLoc = this.startLoc;
        var right = this.parseExprOp(this.parseMaybeUnary(null, false, false, forInit), startPos, startLoc, prec, forInit);
        var node = this.buildBinary(leftStartPos, leftStartLoc, left, right, op, logical || coalesce);
        if ((logical && this.type === types$1.coalesce) || (coalesce && (this.type === types$1.logicalOR || this.type === types$1.logicalAND))) {
          this.raiseRecoverable(this.start, "Logical expressions and coalesce expressions cannot be mixed. Wrap either by parentheses");
        }
        return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec, forInit)
      }
    }
    return left
  };

  pp$5.buildBinary = function(startPos, startLoc, left, right, op, logical) {
    if (right.type === "PrivateIdentifier") { this.raise(right.start, "Private identifier can only be left side of binary expression"); }
    var node = this.startNodeAt(startPos, startLoc);
    node.left = left;
    node.operator = op;
    node.right = right;
    return this.finishNode(node, logical ? "LogicalExpression" : "BinaryExpression")
  };

  // Parse unary operators, both prefix and postfix.

  pp$5.parseMaybeUnary = function(refDestructuringErrors, sawUnary, incDec, forInit) {
    var startPos = this.start, startLoc = this.startLoc, expr;
    if (this.isContextual("await") && this.canAwait) {
      expr = this.parseAwait(forInit);
      sawUnary = true;
    } else if (this.type.prefix) {
      var node = this.startNode(), update = this.type === types$1.incDec;
      node.operator = this.value;
      node.prefix = true;
      this.next();
      node.argument = this.parseMaybeUnary(null, true, update, forInit);
      this.checkExpressionErrors(refDestructuringErrors, true);
      if (update) { this.checkLValSimple(node.argument); }
      else if (this.strict && node.operator === "delete" && isLocalVariableAccess(node.argument))
        { this.raiseRecoverable(node.start, "Deleting local variable in strict mode"); }
      else if (node.operator === "delete" && isPrivateFieldAccess(node.argument))
        { this.raiseRecoverable(node.start, "Private fields can not be deleted"); }
      else { sawUnary = true; }
      expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
    } else if (!sawUnary && this.type === types$1.privateId) {
      if ((forInit || this.privateNameStack.length === 0) && this.options.checkPrivateFields) { this.unexpected(); }
      expr = this.parsePrivateIdent();
      // only could be private fields in 'in', such as #x in obj
      if (this.type !== types$1._in) { this.unexpected(); }
    } else {
      expr = this.parseExprSubscripts(refDestructuringErrors, forInit);
      if (this.checkExpressionErrors(refDestructuringErrors)) { return expr }
      while (this.type.postfix && !this.canInsertSemicolon()) {
        var node$1 = this.startNodeAt(startPos, startLoc);
        node$1.operator = this.value;
        node$1.prefix = false;
        node$1.argument = expr;
        this.checkLValSimple(expr);
        this.next();
        expr = this.finishNode(node$1, "UpdateExpression");
      }
    }

    if (!incDec && this.eat(types$1.starstar)) {
      if (sawUnary)
        { this.unexpected(this.lastTokStart); }
      else
        { return this.buildBinary(startPos, startLoc, expr, this.parseMaybeUnary(null, false, false, forInit), "**", false) }
    } else {
      return expr
    }
  };

  function isLocalVariableAccess(node) {
    return (
      node.type === "Identifier" ||
      node.type === "ParenthesizedExpression" && isLocalVariableAccess(node.expression)
    )
  }

  function isPrivateFieldAccess(node) {
    return (
      node.type === "MemberExpression" && node.property.type === "PrivateIdentifier" ||
      node.type === "ChainExpression" && isPrivateFieldAccess(node.expression) ||
      node.type === "ParenthesizedExpression" && isPrivateFieldAccess(node.expression)
    )
  }

  // Parse call, dot, and `[]`-subscript expressions.

  pp$5.parseExprSubscripts = function(refDestructuringErrors, forInit) {
    var startPos = this.start, startLoc = this.startLoc;
    var expr = this.parseExprAtom(refDestructuringErrors, forInit);
    if (expr.type === "ArrowFunctionExpression" && this.input.slice(this.lastTokStart, this.lastTokEnd) !== ")")
      { return expr }
    var result = this.parseSubscripts(expr, startPos, startLoc, false, forInit);
    if (refDestructuringErrors && result.type === "MemberExpression") {
      if (refDestructuringErrors.parenthesizedAssign >= result.start) { refDestructuringErrors.parenthesizedAssign = -1; }
      if (refDestructuringErrors.parenthesizedBind >= result.start) { refDestructuringErrors.parenthesizedBind = -1; }
      if (refDestructuringErrors.trailingComma >= result.start) { refDestructuringErrors.trailingComma = -1; }
    }
    return result
  };

  pp$5.parseSubscripts = function(base, startPos, startLoc, noCalls, forInit) {
    var maybeAsyncArrow = this.options.ecmaVersion >= 8 && base.type === "Identifier" && base.name === "async" &&
        this.lastTokEnd === base.end && !this.canInsertSemicolon() && base.end - base.start === 5 &&
        this.potentialArrowAt === base.start;
    var optionalChained = false;

    while (true) {
      var element = this.parseSubscript(base, startPos, startLoc, noCalls, maybeAsyncArrow, optionalChained, forInit);

      if (element.optional) { optionalChained = true; }
      if (element === base || element.type === "ArrowFunctionExpression") {
        if (optionalChained) {
          var chainNode = this.startNodeAt(startPos, startLoc);
          chainNode.expression = element;
          element = this.finishNode(chainNode, "ChainExpression");
        }
        return element
      }

      base = element;
    }
  };

  pp$5.shouldParseAsyncArrow = function() {
    return !this.canInsertSemicolon() && this.eat(types$1.arrow)
  };

  pp$5.parseSubscriptAsyncArrow = function(startPos, startLoc, exprList, forInit) {
    return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList, true, forInit)
  };

  pp$5.parseSubscript = function(base, startPos, startLoc, noCalls, maybeAsyncArrow, optionalChained, forInit) {
    var optionalSupported = this.options.ecmaVersion >= 11;
    var optional = optionalSupported && this.eat(types$1.questionDot);
    if (noCalls && optional) { this.raise(this.lastTokStart, "Optional chaining cannot appear in the callee of new expressions"); }

    var computed = this.eat(types$1.bracketL);
    if (computed || (optional && this.type !== types$1.parenL && this.type !== types$1.backQuote) || this.eat(types$1.dot)) {
      var node = this.startNodeAt(startPos, startLoc);
      node.object = base;
      if (computed) {
        node.property = this.parseExpression();
        this.expect(types$1.bracketR);
      } else if (this.type === types$1.privateId && base.type !== "Super") {
        node.property = this.parsePrivateIdent();
      } else {
        node.property = this.parseIdent(this.options.allowReserved !== "never");
      }
      node.computed = !!computed;
      if (optionalSupported) {
        node.optional = optional;
      }
      base = this.finishNode(node, "MemberExpression");
    } else if (!noCalls && this.eat(types$1.parenL)) {
      var refDestructuringErrors = new DestructuringErrors, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldAwaitIdentPos = this.awaitIdentPos;
      this.yieldPos = 0;
      this.awaitPos = 0;
      this.awaitIdentPos = 0;
      var exprList = this.parseExprList(types$1.parenR, this.options.ecmaVersion >= 8, false, refDestructuringErrors);
      if (maybeAsyncArrow && !optional && this.shouldParseAsyncArrow()) {
        this.checkPatternErrors(refDestructuringErrors, false);
        this.checkYieldAwaitInDefaultParams();
        if (this.awaitIdentPos > 0)
          { this.raise(this.awaitIdentPos, "Cannot use 'await' as identifier inside an async function"); }
        this.yieldPos = oldYieldPos;
        this.awaitPos = oldAwaitPos;
        this.awaitIdentPos = oldAwaitIdentPos;
        return this.parseSubscriptAsyncArrow(startPos, startLoc, exprList, forInit)
      }
      this.checkExpressionErrors(refDestructuringErrors, true);
      this.yieldPos = oldYieldPos || this.yieldPos;
      this.awaitPos = oldAwaitPos || this.awaitPos;
      this.awaitIdentPos = oldAwaitIdentPos || this.awaitIdentPos;
      var node$1 = this.startNodeAt(startPos, startLoc);
      node$1.callee = base;
      node$1.arguments = exprList;
      if (optionalSupported) {
        node$1.optional = optional;
      }
      base = this.finishNode(node$1, "CallExpression");
    } else if (this.type === types$1.backQuote) {
      if (optional || optionalChained) {
        this.raise(this.start, "Optional chaining cannot appear in the tag of tagged template expressions");
      }
      var node$2 = this.startNodeAt(startPos, startLoc);
      node$2.tag = base;
      node$2.quasi = this.parseTemplate({isTagged: true});
      base = this.finishNode(node$2, "TaggedTemplateExpression");
    }
    return base
  };

  // Parse an atomic expression — either a single token that is an
  // expression, an expression started by a keyword like `function` or
  // `new`, or an expression wrapped in punctuation like `()`, `[]`,
  // or `{}`.

  pp$5.parseExprAtom = function(refDestructuringErrors, forInit, forNew) {
    // If a division operator appears in an expression position, the
    // tokenizer got confused, and we force it to read a regexp instead.
    if (this.type === types$1.slash) { this.readRegexp(); }

    var node, canBeArrow = this.potentialArrowAt === this.start;
    switch (this.type) {
    case types$1._super:
      if (!this.allowSuper)
        { this.raise(this.start, "'super' keyword outside a method"); }
      node = this.startNode();
      this.next();
      if (this.type === types$1.parenL && !this.allowDirectSuper)
        { this.raise(node.start, "super() call outside constructor of a subclass"); }
      // The `super` keyword can appear at below:
      // SuperProperty:
      //     super [ Expression ]
      //     super . IdentifierName
      // SuperCall:
      //     super ( Arguments )
      if (this.type !== types$1.dot && this.type !== types$1.bracketL && this.type !== types$1.parenL)
        { this.unexpected(); }
      return this.finishNode(node, "Super")

    case types$1._this:
      node = this.startNode();
      this.next();
      return this.finishNode(node, "ThisExpression")

    case types$1.name:
      var startPos = this.start, startLoc = this.startLoc, containsEsc = this.containsEsc;
      var id = this.parseIdent(false);
      if (this.options.ecmaVersion >= 8 && !containsEsc && id.name === "async" && !this.canInsertSemicolon() && this.eat(types$1._function)) {
        this.overrideContext(types.f_expr);
        return this.parseFunction(this.startNodeAt(startPos, startLoc), 0, false, true, forInit)
      }
      if (canBeArrow && !this.canInsertSemicolon()) {
        if (this.eat(types$1.arrow))
          { return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], false, forInit) }
        if (this.options.ecmaVersion >= 8 && id.name === "async" && this.type === types$1.name && !containsEsc &&
            (!this.potentialArrowInForAwait || this.value !== "of" || this.containsEsc)) {
          id = this.parseIdent(false);
          if (this.canInsertSemicolon() || !this.eat(types$1.arrow))
            { this.unexpected(); }
          return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], true, forInit)
        }
      }
      return id

    case types$1.regexp:
      var value = this.value;
      node = this.parseLiteral(value.value);
      node.regex = {pattern: value.pattern, flags: value.flags};
      return node

    case types$1.num: case types$1.string:
      return this.parseLiteral(this.value)

    case types$1._null: case types$1._true: case types$1._false:
      node = this.startNode();
      node.value = this.type === types$1._null ? null : this.type === types$1._true;
      node.raw = this.type.keyword;
      this.next();
      return this.finishNode(node, "Literal")

    case types$1.parenL:
      var start = this.start, expr = this.parseParenAndDistinguishExpression(canBeArrow, forInit);
      if (refDestructuringErrors) {
        if (refDestructuringErrors.parenthesizedAssign < 0 && !this.isSimpleAssignTarget(expr))
          { refDestructuringErrors.parenthesizedAssign = start; }
        if (refDestructuringErrors.parenthesizedBind < 0)
          { refDestructuringErrors.parenthesizedBind = start; }
      }
      return expr

    case types$1.bracketL:
      node = this.startNode();
      this.next();
      node.elements = this.parseExprList(types$1.bracketR, true, true, refDestructuringErrors);
      return this.finishNode(node, "ArrayExpression")

    case types$1.braceL:
      this.overrideContext(types.b_expr);
      return this.parseObj(false, refDestructuringErrors)

    case types$1._function:
      node = this.startNode();
      this.next();
      return this.parseFunction(node, 0)

    case types$1._class:
      return this.parseClass(this.startNode(), false)

    case types$1._new:
      return this.parseNew()

    case types$1.backQuote:
      return this.parseTemplate()

    case types$1._import:
      if (this.options.ecmaVersion >= 11) {
        return this.parseExprImport(forNew)
      } else {
        return this.unexpected()
      }

    default:
      return this.parseExprAtomDefault()
    }
  };

  pp$5.parseExprAtomDefault = function() {
    this.unexpected();
  };

  pp$5.parseExprImport = function(forNew) {
    var node = this.startNode();

    // Consume `import` as an identifier for `import.meta`.
    // Because `this.parseIdent(true)` doesn't check escape sequences, it needs the check of `this.containsEsc`.
    if (this.containsEsc) { this.raiseRecoverable(this.start, "Escape sequence in keyword import"); }
    this.next();

    if (this.type === types$1.parenL && !forNew) {
      return this.parseDynamicImport(node)
    } else if (this.type === types$1.dot) {
      var meta = this.startNodeAt(node.start, node.loc && node.loc.start);
      meta.name = "import";
      node.meta = this.finishNode(meta, "Identifier");
      return this.parseImportMeta(node)
    } else {
      this.unexpected();
    }
  };

  pp$5.parseDynamicImport = function(node) {
    this.next(); // skip `(`

    // Parse node.source.
    node.source = this.parseMaybeAssign();

    // Verify ending.
    if (!this.eat(types$1.parenR)) {
      var errorPos = this.start;
      if (this.eat(types$1.comma) && this.eat(types$1.parenR)) {
        this.raiseRecoverable(errorPos, "Trailing comma is not allowed in import()");
      } else {
        this.unexpected(errorPos);
      }
    }

    return this.finishNode(node, "ImportExpression")
  };

  pp$5.parseImportMeta = function(node) {
    this.next(); // skip `.`

    var containsEsc = this.containsEsc;
    node.property = this.parseIdent(true);

    if (node.property.name !== "meta")
      { this.raiseRecoverable(node.property.start, "The only valid meta property for import is 'import.meta'"); }
    if (containsEsc)
      { this.raiseRecoverable(node.start, "'import.meta' must not contain escaped characters"); }
    if (this.options.sourceType !== "module" && !this.options.allowImportExportEverywhere)
      { this.raiseRecoverable(node.start, "Cannot use 'import.meta' outside a module"); }

    return this.finishNode(node, "MetaProperty")
  };

  pp$5.parseLiteral = function(value) {
    var node = this.startNode();
    node.value = value;
    node.raw = this.input.slice(this.start, this.end);
    if (node.raw.charCodeAt(node.raw.length - 1) === 110) { node.bigint = node.raw.slice(0, -1).replace(/_/g, ""); }
    this.next();
    return this.finishNode(node, "Literal")
  };

  pp$5.parseParenExpression = function() {
    this.expect(types$1.parenL);
    var val = this.parseExpression();
    this.expect(types$1.parenR);
    return val
  };

  pp$5.shouldParseArrow = function(exprList) {
    return !this.canInsertSemicolon()
  };

  pp$5.parseParenAndDistinguishExpression = function(canBeArrow, forInit) {
    var startPos = this.start, startLoc = this.startLoc, val, allowTrailingComma = this.options.ecmaVersion >= 8;
    if (this.options.ecmaVersion >= 6) {
      this.next();

      var innerStartPos = this.start, innerStartLoc = this.startLoc;
      var exprList = [], first = true, lastIsComma = false;
      var refDestructuringErrors = new DestructuringErrors, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, spreadStart;
      this.yieldPos = 0;
      this.awaitPos = 0;
      // Do not save awaitIdentPos to allow checking awaits nested in parameters
      while (this.type !== types$1.parenR) {
        first ? first = false : this.expect(types$1.comma);
        if (allowTrailingComma && this.afterTrailingComma(types$1.parenR, true)) {
          lastIsComma = true;
          break
        } else if (this.type === types$1.ellipsis) {
          spreadStart = this.start;
          exprList.push(this.parseParenItem(this.parseRestBinding()));
          if (this.type === types$1.comma) {
            this.raiseRecoverable(
              this.start,
              "Comma is not permitted after the rest element"
            );
          }
          break
        } else {
          exprList.push(this.parseMaybeAssign(false, refDestructuringErrors, this.parseParenItem));
        }
      }
      var innerEndPos = this.lastTokEnd, innerEndLoc = this.lastTokEndLoc;
      this.expect(types$1.parenR);

      if (canBeArrow && this.shouldParseArrow(exprList) && this.eat(types$1.arrow)) {
        this.checkPatternErrors(refDestructuringErrors, false);
        this.checkYieldAwaitInDefaultParams();
        this.yieldPos = oldYieldPos;
        this.awaitPos = oldAwaitPos;
        return this.parseParenArrowList(startPos, startLoc, exprList, forInit)
      }

      if (!exprList.length || lastIsComma) { this.unexpected(this.lastTokStart); }
      if (spreadStart) { this.unexpected(spreadStart); }
      this.checkExpressionErrors(refDestructuringErrors, true);
      this.yieldPos = oldYieldPos || this.yieldPos;
      this.awaitPos = oldAwaitPos || this.awaitPos;

      if (exprList.length > 1) {
        val = this.startNodeAt(innerStartPos, innerStartLoc);
        val.expressions = exprList;
        this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc);
      } else {
        val = exprList[0];
      }
    } else {
      val = this.parseParenExpression();
    }

    if (this.options.preserveParens) {
      var par = this.startNodeAt(startPos, startLoc);
      par.expression = val;
      return this.finishNode(par, "ParenthesizedExpression")
    } else {
      return val
    }
  };

  pp$5.parseParenItem = function(item) {
    return item
  };

  pp$5.parseParenArrowList = function(startPos, startLoc, exprList, forInit) {
    return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList, false, forInit)
  };

  // New's precedence is slightly tricky. It must allow its argument to
  // be a `[]` or dot subscript expression, but not a call — at least,
  // not without wrapping it in parentheses. Thus, it uses the noCalls
  // argument to parseSubscripts to prevent it from consuming the
  // argument list.

  var empty = [];

  pp$5.parseNew = function() {
    if (this.containsEsc) { this.raiseRecoverable(this.start, "Escape sequence in keyword new"); }
    var node = this.startNode();
    this.next();
    if (this.options.ecmaVersion >= 6 && this.type === types$1.dot) {
      var meta = this.startNodeAt(node.start, node.loc && node.loc.start);
      meta.name = "new";
      node.meta = this.finishNode(meta, "Identifier");
      this.next();
      var containsEsc = this.containsEsc;
      node.property = this.parseIdent(true);
      if (node.property.name !== "target")
        { this.raiseRecoverable(node.property.start, "The only valid meta property for new is 'new.target'"); }
      if (containsEsc)
        { this.raiseRecoverable(node.start, "'new.target' must not contain escaped characters"); }
      if (!this.allowNewDotTarget)
        { this.raiseRecoverable(node.start, "'new.target' can only be used in functions and class static block"); }
      return this.finishNode(node, "MetaProperty")
    }
    var startPos = this.start, startLoc = this.startLoc;
    node.callee = this.parseSubscripts(this.parseExprAtom(null, false, true), startPos, startLoc, true, false);
    if (this.eat(types$1.parenL)) { node.arguments = this.parseExprList(types$1.parenR, this.options.ecmaVersion >= 8, false); }
    else { node.arguments = empty; }
    return this.finishNode(node, "NewExpression")
  };

  // Parse template expression.

  pp$5.parseTemplateElement = function(ref) {
    var isTagged = ref.isTagged;

    var elem = this.startNode();
    if (this.type === types$1.invalidTemplate) {
      if (!isTagged) {
        this.raiseRecoverable(this.start, "Bad escape sequence in untagged template literal");
      }
      elem.value = {
        raw: this.value.replace(/\r\n?/g, "\n"),
        cooked: null
      };
    } else {
      elem.value = {
        raw: this.input.slice(this.start, this.end).replace(/\r\n?/g, "\n"),
        cooked: this.value
      };
    }
    this.next();
    elem.tail = this.type === types$1.backQuote;
    return this.finishNode(elem, "TemplateElement")
  };

  pp$5.parseTemplate = function(ref) {
    if ( ref === void 0 ) ref = {};
    var isTagged = ref.isTagged; if ( isTagged === void 0 ) isTagged = false;

    var node = this.startNode();
    this.next();
    node.expressions = [];
    var curElt = this.parseTemplateElement({isTagged: isTagged});
    node.quasis = [curElt];
    while (!curElt.tail) {
      if (this.type === types$1.eof) { this.raise(this.pos, "Unterminated template literal"); }
      this.expect(types$1.dollarBraceL);
      node.expressions.push(this.parseExpression());
      this.expect(types$1.braceR);
      node.quasis.push(curElt = this.parseTemplateElement({isTagged: isTagged}));
    }
    this.next();
    return this.finishNode(node, "TemplateLiteral")
  };

  pp$5.isAsyncProp = function(prop) {
    return !prop.computed && prop.key.type === "Identifier" && prop.key.name === "async" &&
      (this.type === types$1.name || this.type === types$1.num || this.type === types$1.string || this.type === types$1.bracketL || this.type.keyword || (this.options.ecmaVersion >= 9 && this.type === types$1.star)) &&
      !lineBreak.test(this.input.slice(this.lastTokEnd, this.start))
  };

  // Parse an object literal or binding pattern.

  pp$5.parseObj = function(isPattern, refDestructuringErrors) {
    var node = this.startNode(), first = true, propHash = {};
    node.properties = [];
    this.next();
    while (!this.eat(types$1.braceR)) {
      if (!first) {
        this.expect(types$1.comma);
        if (this.options.ecmaVersion >= 5 && this.afterTrailingComma(types$1.braceR)) { break }
      } else { first = false; }

      var prop = this.parseProperty(isPattern, refDestructuringErrors);
      if (!isPattern) { this.checkPropClash(prop, propHash, refDestructuringErrors); }
      node.properties.push(prop);
    }
    return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression")
  };

  pp$5.parseProperty = function(isPattern, refDestructuringErrors) {
    var prop = this.startNode(), isGenerator, isAsync, startPos, startLoc;
    if (this.options.ecmaVersion >= 9 && this.eat(types$1.ellipsis)) {
      if (isPattern) {
        prop.argument = this.parseIdent(false);
        if (this.type === types$1.comma) {
          this.raiseRecoverable(this.start, "Comma is not permitted after the rest element");
        }
        return this.finishNode(prop, "RestElement")
      }
      // Parse argument.
      prop.argument = this.parseMaybeAssign(false, refDestructuringErrors);
      // To disallow trailing comma via `this.toAssignable()`.
      if (this.type === types$1.comma && refDestructuringErrors && refDestructuringErrors.trailingComma < 0) {
        refDestructuringErrors.trailingComma = this.start;
      }
      // Finish
      return this.finishNode(prop, "SpreadElement")
    }
    if (this.options.ecmaVersion >= 6) {
      prop.method = false;
      prop.shorthand = false;
      if (isPattern || refDestructuringErrors) {
        startPos = this.start;
        startLoc = this.startLoc;
      }
      if (!isPattern)
        { isGenerator = this.eat(types$1.star); }
    }
    var containsEsc = this.containsEsc;
    this.parsePropertyName(prop);
    if (!isPattern && !containsEsc && this.options.ecmaVersion >= 8 && !isGenerator && this.isAsyncProp(prop)) {
      isAsync = true;
      isGenerator = this.options.ecmaVersion >= 9 && this.eat(types$1.star);
      this.parsePropertyName(prop);
    } else {
      isAsync = false;
    }
    this.parsePropertyValue(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors, containsEsc);
    return this.finishNode(prop, "Property")
  };

  pp$5.parseGetterSetter = function(prop) {
    prop.kind = prop.key.name;
    this.parsePropertyName(prop);
    prop.value = this.parseMethod(false);
    var paramCount = prop.kind === "get" ? 0 : 1;
    if (prop.value.params.length !== paramCount) {
      var start = prop.value.start;
      if (prop.kind === "get")
        { this.raiseRecoverable(start, "getter should have no params"); }
      else
        { this.raiseRecoverable(start, "setter should have exactly one param"); }
    } else {
      if (prop.kind === "set" && prop.value.params[0].type === "RestElement")
        { this.raiseRecoverable(prop.value.params[0].start, "Setter cannot use rest params"); }
    }
  };

  pp$5.parsePropertyValue = function(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors, containsEsc) {
    if ((isGenerator || isAsync) && this.type === types$1.colon)
      { this.unexpected(); }

    if (this.eat(types$1.colon)) {
      prop.value = isPattern ? this.parseMaybeDefault(this.start, this.startLoc) : this.parseMaybeAssign(false, refDestructuringErrors);
      prop.kind = "init";
    } else if (this.options.ecmaVersion >= 6 && this.type === types$1.parenL) {
      if (isPattern) { this.unexpected(); }
      prop.kind = "init";
      prop.method = true;
      prop.value = this.parseMethod(isGenerator, isAsync);
    } else if (!isPattern && !containsEsc &&
               this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" &&
               (prop.key.name === "get" || prop.key.name === "set") &&
               (this.type !== types$1.comma && this.type !== types$1.braceR && this.type !== types$1.eq)) {
      if (isGenerator || isAsync) { this.unexpected(); }
      this.parseGetterSetter(prop);
    } else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") {
      if (isGenerator || isAsync) { this.unexpected(); }
      this.checkUnreserved(prop.key);
      if (prop.key.name === "await" && !this.awaitIdentPos)
        { this.awaitIdentPos = startPos; }
      prop.kind = "init";
      if (isPattern) {
        prop.value = this.parseMaybeDefault(startPos, startLoc, this.copyNode(prop.key));
      } else if (this.type === types$1.eq && refDestructuringErrors) {
        if (refDestructuringErrors.shorthandAssign < 0)
          { refDestructuringErrors.shorthandAssign = this.start; }
        prop.value = this.parseMaybeDefault(startPos, startLoc, this.copyNode(prop.key));
      } else {
        prop.value = this.copyNode(prop.key);
      }
      prop.shorthand = true;
    } else { this.unexpected(); }
  };

  pp$5.parsePropertyName = function(prop) {
    if (this.options.ecmaVersion >= 6) {
      if (this.eat(types$1.bracketL)) {
        prop.computed = true;
        prop.key = this.parseMaybeAssign();
        this.expect(types$1.bracketR);
        return prop.key
      } else {
        prop.computed = false;
      }
    }
    return prop.key = this.type === types$1.num || this.type === types$1.string ? this.parseExprAtom() : this.parseIdent(this.options.allowReserved !== "never")
  };

  // Initialize empty function node.

  pp$5.initFunction = function(node) {
    node.id = null;
    if (this.options.ecmaVersion >= 6) { node.generator = node.expression = false; }
    if (this.options.ecmaVersion >= 8) { node.async = false; }
  };

  // Parse object or class method.

  pp$5.parseMethod = function(isGenerator, isAsync, allowDirectSuper) {
    var node = this.startNode(), oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldAwaitIdentPos = this.awaitIdentPos;

    this.initFunction(node);
    if (this.options.ecmaVersion >= 6)
      { node.generator = isGenerator; }
    if (this.options.ecmaVersion >= 8)
      { node.async = !!isAsync; }

    this.yieldPos = 0;
    this.awaitPos = 0;
    this.awaitIdentPos = 0;
    this.enterScope(functionFlags(isAsync, node.generator) | SCOPE_SUPER | (allowDirectSuper ? SCOPE_DIRECT_SUPER : 0));

    this.expect(types$1.parenL);
    node.params = this.parseBindingList(types$1.parenR, false, this.options.ecmaVersion >= 8);
    this.checkYieldAwaitInDefaultParams();
    this.parseFunctionBody(node, false, true, false);

    this.yieldPos = oldYieldPos;
    this.awaitPos = oldAwaitPos;
    this.awaitIdentPos = oldAwaitIdentPos;
    return this.finishNode(node, "FunctionExpression")
  };

  // Parse arrow function expression with given parameters.

  pp$5.parseArrowExpression = function(node, params, isAsync, forInit) {
    var oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldAwaitIdentPos = this.awaitIdentPos;

    this.enterScope(functionFlags(isAsync, false) | SCOPE_ARROW);
    this.initFunction(node);
    if (this.options.ecmaVersion >= 8) { node.async = !!isAsync; }

    this.yieldPos = 0;
    this.awaitPos = 0;
    this.awaitIdentPos = 0;

    node.params = this.toAssignableList(params, true);
    this.parseFunctionBody(node, true, false, forInit);

    this.yieldPos = oldYieldPos;
    this.awaitPos = oldAwaitPos;
    this.awaitIdentPos = oldAwaitIdentPos;
    return this.finishNode(node, "ArrowFunctionExpression")
  };

  // Parse function body and check parameters.

  pp$5.parseFunctionBody = function(node, isArrowFunction, isMethod, forInit) {
    var isExpression = isArrowFunction && this.type !== types$1.braceL;
    var oldStrict = this.strict, useStrict = false;

    if (isExpression) {
      node.body = this.parseMaybeAssign(forInit);
      node.expression = true;
      this.checkParams(node, false);
    } else {
      var nonSimple = this.options.ecmaVersion >= 7 && !this.isSimpleParamList(node.params);
      if (!oldStrict || nonSimple) {
        useStrict = this.strictDirective(this.end);
        // If this is a strict mode function, verify that argument names
        // are not repeated, and it does not try to bind the words `eval`
        // or `arguments`.
        if (useStrict && nonSimple)
          { this.raiseRecoverable(node.start, "Illegal 'use strict' directive in function with non-simple parameter list"); }
      }
      // Start a new scope with regard to labels and the `inFunction`
      // flag (restore them to their old value afterwards).
      var oldLabels = this.labels;
      this.labels = [];
      if (useStrict) { this.strict = true; }

      // Add the params to varDeclaredNames to ensure that an error is thrown
      // if a let/const declaration in the function clashes with one of the params.
      this.checkParams(node, !oldStrict && !useStrict && !isArrowFunction && !isMethod && this.isSimpleParamList(node.params));
      // Ensure the function name isn't a forbidden identifier in strict mode, e.g. 'eval'
      if (this.strict && node.id) { this.checkLValSimple(node.id, BIND_OUTSIDE); }
      node.body = this.parseBlock(false, undefined, useStrict && !oldStrict);
      node.expression = false;
      this.adaptDirectivePrologue(node.body.body);
      this.labels = oldLabels;
    }
    this.exitScope();
  };

  pp$5.isSimpleParamList = function(params) {
    for (var i = 0, list = params; i < list.length; i += 1)
      {
      var param = list[i];

      if (param.type !== "Identifier") { return false
    } }
    return true
  };

  // Checks function params for various disallowed patterns such as using "eval"
  // or "arguments" and duplicate parameters.

  pp$5.checkParams = function(node, allowDuplicates) {
    var nameHash = Object.create(null);
    for (var i = 0, list = node.params; i < list.length; i += 1)
      {
      var param = list[i];

      this.checkLValInnerPattern(param, BIND_VAR, allowDuplicates ? null : nameHash);
    }
  };

  // Parses a comma-separated list of expressions, and returns them as
  // an array. `close` is the token type that ends the list, and
  // `allowEmpty` can be turned on to allow subsequent commas with
  // nothing in between them to be parsed as `null` (which is needed
  // for array literals).

  pp$5.parseExprList = function(close, allowTrailingComma, allowEmpty, refDestructuringErrors) {
    var elts = [], first = true;
    while (!this.eat(close)) {
      if (!first) {
        this.expect(types$1.comma);
        if (allowTrailingComma && this.afterTrailingComma(close)) { break }
      } else { first = false; }

      var elt = (void 0);
      if (allowEmpty && this.type === types$1.comma)
        { elt = null; }
      else if (this.type === types$1.ellipsis) {
        elt = this.parseSpread(refDestructuringErrors);
        if (refDestructuringErrors && this.type === types$1.comma && refDestructuringErrors.trailingComma < 0)
          { refDestructuringErrors.trailingComma = this.start; }
      } else {
        elt = this.parseMaybeAssign(false, refDestructuringErrors);
      }
      elts.push(elt);
    }
    return elts
  };

  pp$5.checkUnreserved = function(ref) {
    var start = ref.start;
    var end = ref.end;
    var name = ref.name;

    if (this.inGenerator && name === "yield")
      { this.raiseRecoverable(start, "Cannot use 'yield' as identifier inside a generator"); }
    if (this.inAsync && name === "await")
      { this.raiseRecoverable(start, "Cannot use 'await' as identifier inside an async function"); }
    if (this.currentThisScope().inClassFieldInit && name === "arguments")
      { this.raiseRecoverable(start, "Cannot use 'arguments' in class field initializer"); }
    if (this.inClassStaticBlock && (name === "arguments" || name === "await"))
      { this.raise(start, ("Cannot use " + name + " in class static initialization block")); }
    if (this.keywords.test(name))
      { this.raise(start, ("Unexpected keyword '" + name + "'")); }
    if (this.options.ecmaVersion < 6 &&
      this.input.slice(start, end).indexOf("\\") !== -1) { return }
    var re = this.strict ? this.reservedWordsStrict : this.reservedWords;
    if (re.test(name)) {
      if (!this.inAsync && name === "await")
        { this.raiseRecoverable(start, "Cannot use keyword 'await' outside an async function"); }
      this.raiseRecoverable(start, ("The keyword '" + name + "' is reserved"));
    }
  };

  // Parse the next token as an identifier. If `liberal` is true (used
  // when parsing properties), it will also convert keywords into
  // identifiers.

  pp$5.parseIdent = function(liberal) {
    var node = this.parseIdentNode();
    this.next(!!liberal);
    this.finishNode(node, "Identifier");
    if (!liberal) {
      this.checkUnreserved(node);
      if (node.name === "await" && !this.awaitIdentPos)
        { this.awaitIdentPos = node.start; }
    }
    return node
  };

  pp$5.parseIdentNode = function() {
    var node = this.startNode();
    if (this.type === types$1.name) {
      node.name = this.value;
    } else if (this.type.keyword) {
      node.name = this.type.keyword;

      // To fix https://github.com/acornjs/acorn/issues/575
      // `class` and `function` keywords push new context into this.context.
      // But there is no chance to pop the context if the keyword is consumed as an identifier such as a property name.
      // If the previous token is a dot, this does not apply because the context-managing code already ignored the keyword
      if ((node.name === "class" || node.name === "function") &&
        (this.lastTokEnd !== this.lastTokStart + 1 || this.input.charCodeAt(this.lastTokStart) !== 46)) {
        this.context.pop();
      }
      this.type = types$1.name;
    } else {
      this.unexpected();
    }
    return node
  };

  pp$5.parsePrivateIdent = function() {
    var node = this.startNode();
    if (this.type === types$1.privateId) {
      node.name = this.value;
    } else {
      this.unexpected();
    }
    this.next();
    this.finishNode(node, "PrivateIdentifier");

    // For validating existence
    if (this.options.checkPrivateFields) {
      if (this.privateNameStack.length === 0) {
        this.raise(node.start, ("Private field '#" + (node.name) + "' must be declared in an enclosing class"));
      } else {
        this.privateNameStack[this.privateNameStack.length - 1].used.push(node);
      }
    }

    return node
  };

  // Parses yield expression inside generator.

  pp$5.parseYield = function(forInit) {
    if (!this.yieldPos) { this.yieldPos = this.start; }

    var node = this.startNode();
    this.next();
    if (this.type === types$1.semi || this.canInsertSemicolon() || (this.type !== types$1.star && !this.type.startsExpr)) {
      node.delegate = false;
      node.argument = null;
    } else {
      node.delegate = this.eat(types$1.star);
      node.argument = this.parseMaybeAssign(forInit);
    }
    return this.finishNode(node, "YieldExpression")
  };

  pp$5.parseAwait = function(forInit) {
    if (!this.awaitPos) { this.awaitPos = this.start; }

    var node = this.startNode();
    this.next();
    node.argument = this.parseMaybeUnary(null, true, false, forInit);
    return this.finishNode(node, "AwaitExpression")
  };

  var pp$4 = Parser.prototype;

  // This function is used to raise exceptions on parse errors. It
  // takes an offset integer (into the current `input`) to indicate
  // the location of the error, attaches the position to the end
  // of the error message, and then raises a `SyntaxError` with that
  // message.

  pp$4.raise = function(pos, message) {
    var loc = getLineInfo(this.input, pos);
    message += " (" + loc.line + ":" + loc.column + ")";
    var err = new SyntaxError(message);
    err.pos = pos; err.loc = loc; err.raisedAt = this.pos;
    throw err
  };

  pp$4.raiseRecoverable = pp$4.raise;

  pp$4.curPosition = function() {
    if (this.options.locations) {
      return new Position(this.curLine, this.pos - this.lineStart)
    }
  };

  var pp$3 = Parser.prototype;

  var Scope = function Scope(flags) {
    this.flags = flags;
    // A list of var-declared names in the current lexical scope
    this.var = [];
    // A list of lexically-declared names in the current lexical scope
    this.lexical = [];
    // A list of lexically-declared FunctionDeclaration names in the current lexical scope
    this.functions = [];
    // A switch to disallow the identifier reference 'arguments'
    this.inClassFieldInit = false;
  };

  // The functions in this module keep track of declared variables in the current scope in order to detect duplicate variable names.

  pp$3.enterScope = function(flags) {
    this.scopeStack.push(new Scope(flags));
  };

  pp$3.exitScope = function() {
    this.scopeStack.pop();
  };

  // The spec says:
  // > At the top level of a function, or script, function declarations are
  // > treated like var declarations rather than like lexical declarations.
  pp$3.treatFunctionsAsVarInScope = function(scope) {
    return (scope.flags & SCOPE_FUNCTION) || !this.inModule && (scope.flags & SCOPE_TOP)
  };

  pp$3.declareName = function(name, bindingType, pos) {
    var redeclared = false;
    if (bindingType === BIND_LEXICAL) {
      var scope = this.currentScope();
      redeclared = scope.lexical.indexOf(name) > -1 || scope.functions.indexOf(name) > -1 || scope.var.indexOf(name) > -1;
      scope.lexical.push(name);
      if (this.inModule && (scope.flags & SCOPE_TOP))
        { delete this.undefinedExports[name]; }
    } else if (bindingType === BIND_SIMPLE_CATCH) {
      var scope$1 = this.currentScope();
      scope$1.lexical.push(name);
    } else if (bindingType === BIND_FUNCTION) {
      var scope$2 = this.currentScope();
      if (this.treatFunctionsAsVar)
        { redeclared = scope$2.lexical.indexOf(name) > -1; }
      else
        { redeclared = scope$2.lexical.indexOf(name) > -1 || scope$2.var.indexOf(name) > -1; }
      scope$2.functions.push(name);
    } else {
      for (var i = this.scopeStack.length - 1; i >= 0; --i) {
        var scope$3 = this.scopeStack[i];
        if (scope$3.lexical.indexOf(name) > -1 && !((scope$3.flags & SCOPE_SIMPLE_CATCH) && scope$3.lexical[0] === name) ||
            !this.treatFunctionsAsVarInScope(scope$3) && scope$3.functions.indexOf(name) > -1) {
          redeclared = true;
          break
        }
        scope$3.var.push(name);
        if (this.inModule && (scope$3.flags & SCOPE_TOP))
          { delete this.undefinedExports[name]; }
        if (scope$3.flags & SCOPE_VAR) { break }
      }
    }
    if (redeclared) { this.raiseRecoverable(pos, ("Identifier '" + name + "' has already been declared")); }
  };

  pp$3.checkLocalExport = function(id) {
    // scope.functions must be empty as Module code is always strict.
    if (this.scopeStack[0].lexical.indexOf(id.name) === -1 &&
        this.scopeStack[0].var.indexOf(id.name) === -1) {
      this.undefinedExports[id.name] = id;
    }
  };

  pp$3.currentScope = function() {
    return this.scopeStack[this.scopeStack.length - 1]
  };

  pp$3.currentVarScope = function() {
    for (var i = this.scopeStack.length - 1;; i--) {
      var scope = this.scopeStack[i];
      if (scope.flags & SCOPE_VAR) { return scope }
    }
  };

  // Could be useful for `this`, `new.target`, `super()`, `super.property`, and `super[property]`.
  pp$3.currentThisScope = function() {
    for (var i = this.scopeStack.length - 1;; i--) {
      var scope = this.scopeStack[i];
      if (scope.flags & SCOPE_VAR && !(scope.flags & SCOPE_ARROW)) { return scope }
    }
  };

  var Node = function Node(parser, pos, loc) {
    this.type = "";
    this.start = pos;
    this.end = 0;
    if (parser.options.locations)
      { this.loc = new SourceLocation(parser, loc); }
    if (parser.options.directSourceFile)
      { this.sourceFile = parser.options.directSourceFile; }
    if (parser.options.ranges)
      { this.range = [pos, 0]; }
  };

  // Start an AST node, attaching a start offset.

  var pp$2 = Parser.prototype;

  pp$2.startNode = function() {
    return new Node(this, this.start, this.startLoc)
  };

  pp$2.startNodeAt = function(pos, loc) {
    return new Node(this, pos, loc)
  };

  // Finish an AST node, adding `type` and `end` properties.

  function finishNodeAt(node, type, pos, loc) {
    node.type = type;
    node.end = pos;
    if (this.options.locations)
      { node.loc.end = loc; }
    if (this.options.ranges)
      { node.range[1] = pos; }
    return node
  }

  pp$2.finishNode = function(node, type) {
    return finishNodeAt.call(this, node, type, this.lastTokEnd, this.lastTokEndLoc)
  };

  // Finish node at given position

  pp$2.finishNodeAt = function(node, type, pos, loc) {
    return finishNodeAt.call(this, node, type, pos, loc)
  };

  pp$2.copyNode = function(node) {
    var newNode = new Node(this, node.start, this.startLoc);
    for (var prop in node) { newNode[prop] = node[prop]; }
    return newNode
  };

  // This file contains Unicode properties extracted from the ECMAScript specification.
  // The lists are extracted like so:
  // $$('#table-binary-unicode-properties > figure > table > tbody > tr > td:nth-child(1) code').map(el => el.innerText)

  // #table-binary-unicode-properties
  var ecma9BinaryProperties = "ASCII ASCII_Hex_Digit AHex Alphabetic Alpha Any Assigned Bidi_Control Bidi_C Bidi_Mirrored Bidi_M Case_Ignorable CI Cased Changes_When_Casefolded CWCF Changes_When_Casemapped CWCM Changes_When_Lowercased CWL Changes_When_NFKC_Casefolded CWKCF Changes_When_Titlecased CWT Changes_When_Uppercased CWU Dash Default_Ignorable_Code_Point DI Deprecated Dep Diacritic Dia Emoji Emoji_Component Emoji_Modifier Emoji_Modifier_Base Emoji_Presentation Extender Ext Grapheme_Base Gr_Base Grapheme_Extend Gr_Ext Hex_Digit Hex IDS_Binary_Operator IDSB IDS_Trinary_Operator IDST ID_Continue IDC ID_Start IDS Ideographic Ideo Join_Control Join_C Logical_Order_Exception LOE Lowercase Lower Math Noncharacter_Code_Point NChar Pattern_Syntax Pat_Syn Pattern_White_Space Pat_WS Quotation_Mark QMark Radical Regional_Indicator RI Sentence_Terminal STerm Soft_Dotted SD Terminal_Punctuation Term Unified_Ideograph UIdeo Uppercase Upper Variation_Selector VS White_Space space XID_Continue XIDC XID_Start XIDS";
  var ecma10BinaryProperties = ecma9BinaryProperties + " Extended_Pictographic";
  var ecma11BinaryProperties = ecma10BinaryProperties;
  var ecma12BinaryProperties = ecma11BinaryProperties + " EBase EComp EMod EPres ExtPict";
  var ecma13BinaryProperties = ecma12BinaryProperties;
  var ecma14BinaryProperties = ecma13BinaryProperties;

  var unicodeBinaryProperties = {
    9: ecma9BinaryProperties,
    10: ecma10BinaryProperties,
    11: ecma11BinaryProperties,
    12: ecma12BinaryProperties,
    13: ecma13BinaryProperties,
    14: ecma14BinaryProperties
  };

  // #table-binary-unicode-properties-of-strings
  var ecma14BinaryPropertiesOfStrings = "Basic_Emoji Emoji_Keycap_Sequence RGI_Emoji_Modifier_Sequence RGI_Emoji_Flag_Sequence RGI_Emoji_Tag_Sequence RGI_Emoji_ZWJ_Sequence RGI_Emoji";

  var unicodeBinaryPropertiesOfStrings = {
    9: "",
    10: "",
    11: "",
    12: "",
    13: "",
    14: ecma14BinaryPropertiesOfStrings
  };

  // #table-unicode-general-category-values
  var unicodeGeneralCategoryValues = "Cased_Letter LC Close_Punctuation Pe Connector_Punctuation Pc Control Cc cntrl Currency_Symbol Sc Dash_Punctuation Pd Decimal_Number Nd digit Enclosing_Mark Me Final_Punctuation Pf Format Cf Initial_Punctuation Pi Letter L Letter_Number Nl Line_Separator Zl Lowercase_Letter Ll Mark M Combining_Mark Math_Symbol Sm Modifier_Letter Lm Modifier_Symbol Sk Nonspacing_Mark Mn Number N Open_Punctuation Ps Other C Other_Letter Lo Other_Number No Other_Punctuation Po Other_Symbol So Paragraph_Separator Zp Private_Use Co Punctuation P punct Separator Z Space_Separator Zs Spacing_Mark Mc Surrogate Cs Symbol S Titlecase_Letter Lt Unassigned Cn Uppercase_Letter Lu";

  // #table-unicode-script-values
  var ecma9ScriptValues = "Adlam Adlm Ahom Anatolian_Hieroglyphs Hluw Arabic Arab Armenian Armn Avestan Avst Balinese Bali Bamum Bamu Bassa_Vah Bass Batak Batk Bengali Beng Bhaiksuki Bhks Bopomofo Bopo Brahmi Brah Braille Brai Buginese Bugi Buhid Buhd Canadian_Aboriginal Cans Carian Cari Caucasian_Albanian Aghb Chakma Cakm Cham Cham Cherokee Cher Common Zyyy Coptic Copt Qaac Cuneiform Xsux Cypriot Cprt Cyrillic Cyrl Deseret Dsrt Devanagari Deva Duployan Dupl Egyptian_Hieroglyphs Egyp Elbasan Elba Ethiopic Ethi Georgian Geor Glagolitic Glag Gothic Goth Grantha Gran Greek Grek Gujarati Gujr Gurmukhi Guru Han Hani Hangul Hang Hanunoo Hano Hatran Hatr Hebrew Hebr Hiragana Hira Imperial_Aramaic Armi Inherited Zinh Qaai Inscriptional_Pahlavi Phli Inscriptional_Parthian Prti Javanese Java Kaithi Kthi Kannada Knda Katakana Kana Kayah_Li Kali Kharoshthi Khar Khmer Khmr Khojki Khoj Khudawadi Sind Lao Laoo Latin Latn Lepcha Lepc Limbu Limb Linear_A Lina Linear_B Linb Lisu Lisu Lycian Lyci Lydian Lydi Mahajani Mahj Malayalam Mlym Mandaic Mand Manichaean Mani Marchen Marc Masaram_Gondi Gonm Meetei_Mayek Mtei Mende_Kikakui Mend Meroitic_Cursive Merc Meroitic_Hieroglyphs Mero Miao Plrd Modi Mongolian Mong Mro Mroo Multani Mult Myanmar Mymr Nabataean Nbat New_Tai_Lue Talu Newa Newa Nko Nkoo Nushu Nshu Ogham Ogam Ol_Chiki Olck Old_Hungarian Hung Old_Italic Ital Old_North_Arabian Narb Old_Permic Perm Old_Persian Xpeo Old_South_Arabian Sarb Old_Turkic Orkh Oriya Orya Osage Osge Osmanya Osma Pahawh_Hmong Hmng Palmyrene Palm Pau_Cin_Hau Pauc Phags_Pa Phag Phoenician Phnx Psalter_Pahlavi Phlp Rejang Rjng Runic Runr Samaritan Samr Saurashtra Saur Sharada Shrd Shavian Shaw Siddham Sidd SignWriting Sgnw Sinhala Sinh Sora_Sompeng Sora Soyombo Soyo Sundanese Sund Syloti_Nagri Sylo Syriac Syrc Tagalog Tglg Tagbanwa Tagb Tai_Le Tale Tai_Tham Lana Tai_Viet Tavt Takri Takr Tamil Taml Tangut Tang Telugu Telu Thaana Thaa Thai Thai Tibetan Tibt Tifinagh Tfng Tirhuta Tirh Ugaritic Ugar Vai Vaii Warang_Citi Wara Yi Yiii Zanabazar_Square Zanb";
  var ecma10ScriptValues = ecma9ScriptValues + " Dogra Dogr Gunjala_Gondi Gong Hanifi_Rohingya Rohg Makasar Maka Medefaidrin Medf Old_Sogdian Sogo Sogdian Sogd";
  var ecma11ScriptValues = ecma10ScriptValues + " Elymaic Elym Nandinagari Nand Nyiakeng_Puachue_Hmong Hmnp Wancho Wcho";
  var ecma12ScriptValues = ecma11ScriptValues + " Chorasmian Chrs Diak Dives_Akuru Khitan_Small_Script Kits Yezi Yezidi";
  var ecma13ScriptValues = ecma12ScriptValues + " Cypro_Minoan Cpmn Old_Uyghur Ougr Tangsa Tnsa Toto Vithkuqi Vith";
  var ecma14ScriptValues = ecma13ScriptValues + " Hrkt Katakana_Or_Hiragana Kawi Nag_Mundari Nagm Unknown Zzzz";

  var unicodeScriptValues = {
    9: ecma9ScriptValues,
    10: ecma10ScriptValues,
    11: ecma11ScriptValues,
    12: ecma12ScriptValues,
    13: ecma13ScriptValues,
    14: ecma14ScriptValues
  };

  var data = {};
  function buildUnicodeData(ecmaVersion) {
    var d = data[ecmaVersion] = {
      binary: wordsRegexp(unicodeBinaryProperties[ecmaVersion] + " " + unicodeGeneralCategoryValues),
      binaryOfStrings: wordsRegexp(unicodeBinaryPropertiesOfStrings[ecmaVersion]),
      nonBinary: {
        General_Category: wordsRegexp(unicodeGeneralCategoryValues),
        Script: wordsRegexp(unicodeScriptValues[ecmaVersion])
      }
    };
    d.nonBinary.Script_Extensions = d.nonBinary.Script;

    d.nonBinary.gc = d.nonBinary.General_Category;
    d.nonBinary.sc = d.nonBinary.Script;
    d.nonBinary.scx = d.nonBinary.Script_Extensions;
  }

  for (var i = 0, list = [9, 10, 11, 12, 13, 14]; i < list.length; i += 1) {
    var ecmaVersion = list[i];

    buildUnicodeData(ecmaVersion);
  }

  var pp$1 = Parser.prototype;

  // Track disjunction structure to determine whether a duplicate
  // capture group name is allowed because it is in a separate branch.
  var BranchID = function BranchID(parent, base) {
    // Parent disjunction branch
    this.parent = parent;
    // Identifies this set of sibling branches
    this.base = base || this;
  };

  BranchID.prototype.separatedFrom = function separatedFrom (alt) {
    // A branch is separate from another branch if they or any of
    // their parents are siblings in a given disjunction
    for (var self = this; self; self = self.parent) {
      for (var other = alt; other; other = other.parent) {
        if (self.base === other.base && self !== other) { return true }
      }
    }
    return false
  };

  BranchID.prototype.sibling = function sibling () {
    return new BranchID(this.parent, this.base)
  };

  var RegExpValidationState = function RegExpValidationState(parser) {
    this.parser = parser;
    this.validFlags = "gim" + (parser.options.ecmaVersion >= 6 ? "uy" : "") + (parser.options.ecmaVersion >= 9 ? "s" : "") + (parser.options.ecmaVersion >= 13 ? "d" : "") + (parser.options.ecmaVersion >= 15 ? "v" : "");
    this.unicodeProperties = data[parser.options.ecmaVersion >= 14 ? 14 : parser.options.ecmaVersion];
    this.source = "";
    this.flags = "";
    this.start = 0;
    this.switchU = false;
    this.switchV = false;
    this.switchN = false;
    this.pos = 0;
    this.lastIntValue = 0;
    this.lastStringValue = "";
    this.lastAssertionIsQuantifiable = false;
    this.numCapturingParens = 0;
    this.maxBackReference = 0;
    this.groupNames = Object.create(null);
    this.backReferenceNames = [];
    this.branchID = null;
  };

  RegExpValidationState.prototype.reset = function reset (start, pattern, flags) {
    var unicodeSets = flags.indexOf("v") !== -1;
    var unicode = flags.indexOf("u") !== -1;
    this.start = start | 0;
    this.source = pattern + "";
    this.flags = flags;
    if (unicodeSets && this.parser.options.ecmaVersion >= 15) {
      this.switchU = true;
      this.switchV = true;
      this.switchN = true;
    } else {
      this.switchU = unicode && this.parser.options.ecmaVersion >= 6;
      this.switchV = false;
      this.switchN = unicode && this.parser.options.ecmaVersion >= 9;
    }
  };

  RegExpValidationState.prototype.raise = function raise (message) {
    this.parser.raiseRecoverable(this.start, ("Invalid regular expression: /" + (this.source) + "/: " + message));
  };

  // If u flag is given, this returns the code point at the index (it combines a surrogate pair).
  // Otherwise, this returns the code unit of the index (can be a part of a surrogate pair).
  RegExpValidationState.prototype.at = function at (i, forceU) {
      if ( forceU === void 0 ) forceU = false;

    var s = this.source;
    var l = s.length;
    if (i >= l) {
      return -1
    }
    var c = s.charCodeAt(i);
    if (!(forceU || this.switchU) || c <= 0xD7FF || c >= 0xE000 || i + 1 >= l) {
      return c
    }
    var next = s.charCodeAt(i + 1);
    return next >= 0xDC00 && next <= 0xDFFF ? (c << 10) + next - 0x35FDC00 : c
  };

  RegExpValidationState.prototype.nextIndex = function nextIndex (i, forceU) {
      if ( forceU === void 0 ) forceU = false;

    var s = this.source;
    var l = s.length;
    if (i >= l) {
      return l
    }
    var c = s.charCodeAt(i), next;
    if (!(forceU || this.switchU) || c <= 0xD7FF || c >= 0xE000 || i + 1 >= l ||
        (next = s.charCodeAt(i + 1)) < 0xDC00 || next > 0xDFFF) {
      return i + 1
    }
    return i + 2
  };

  RegExpValidationState.prototype.current = function current (forceU) {
      if ( forceU === void 0 ) forceU = false;

    return this.at(this.pos, forceU)
  };

  RegExpValidationState.prototype.lookahead = function lookahead (forceU) {
      if ( forceU === void 0 ) forceU = false;

    return this.at(this.nextIndex(this.pos, forceU), forceU)
  };

  RegExpValidationState.prototype.advance = function advance (forceU) {
      if ( forceU === void 0 ) forceU = false;

    this.pos = this.nextIndex(this.pos, forceU);
  };

  RegExpValidationState.prototype.eat = function eat (ch, forceU) {
      if ( forceU === void 0 ) forceU = false;

    if (this.current(forceU) === ch) {
      this.advance(forceU);
      return true
    }
    return false
  };

  RegExpValidationState.prototype.eatChars = function eatChars (chs, forceU) {
      if ( forceU === void 0 ) forceU = false;

    var pos = this.pos;
    for (var i = 0, list = chs; i < list.length; i += 1) {
      var ch = list[i];

        var current = this.at(pos, forceU);
      if (current === -1 || current !== ch) {
        return false
      }
      pos = this.nextIndex(pos, forceU);
    }
    this.pos = pos;
    return true
  };

  /**
   * Validate the flags part of a given RegExpLiteral.
   *
   * @param {RegExpValidationState} state The state to validate RegExp.
   * @returns {void}
   */
  pp$1.validateRegExpFlags = function(state) {
    var validFlags = state.validFlags;
    var flags = state.flags;

    var u = false;
    var v = false;

    for (var i = 0; i < flags.length; i++) {
      var flag = flags.charAt(i);
      if (validFlags.indexOf(flag) === -1) {
        this.raise(state.start, "Invalid regular expression flag");
      }
      if (flags.indexOf(flag, i + 1) > -1) {
        this.raise(state.start, "Duplicate regular expression flag");
      }
      if (flag === "u") { u = true; }
      if (flag === "v") { v = true; }
    }
    if (this.options.ecmaVersion >= 15 && u && v) {
      this.raise(state.start, "Invalid regular expression flag");
    }
  };

  function hasProp(obj) {
    for (var _ in obj) { return true }
    return false
  }

  /**
   * Validate the pattern part of a given RegExpLiteral.
   *
   * @param {RegExpValidationState} state The state to validate RegExp.
   * @returns {void}
   */
  pp$1.validateRegExpPattern = function(state) {
    this.regexp_pattern(state);

    // The goal symbol for the parse is |Pattern[~U, ~N]|. If the result of
    // parsing contains a |GroupName|, reparse with the goal symbol
    // |Pattern[~U, +N]| and use this result instead. Throw a *SyntaxError*
    // exception if _P_ did not conform to the grammar, if any elements of _P_
    // were not matched by the parse, or if any Early Error conditions exist.
    if (!state.switchN && this.options.ecmaVersion >= 9 && hasProp(state.groupNames)) {
      state.switchN = true;
      this.regexp_pattern(state);
    }
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Pattern
  pp$1.regexp_pattern = function(state) {
    state.pos = 0;
    state.lastIntValue = 0;
    state.lastStringValue = "";
    state.lastAssertionIsQuantifiable = false;
    state.numCapturingParens = 0;
    state.maxBackReference = 0;
    state.groupNames = Object.create(null);
    state.backReferenceNames.length = 0;
    state.branchID = null;

    this.regexp_disjunction(state);

    if (state.pos !== state.source.length) {
      // Make the same messages as V8.
      if (state.eat(0x29 /* ) */)) {
        state.raise("Unmatched ')'");
      }
      if (state.eat(0x5D /* ] */) || state.eat(0x7D /* } */)) {
        state.raise("Lone quantifier brackets");
      }
    }
    if (state.maxBackReference > state.numCapturingParens) {
      state.raise("Invalid escape");
    }
    for (var i = 0, list = state.backReferenceNames; i < list.length; i += 1) {
      var name = list[i];

      if (!state.groupNames[name]) {
        state.raise("Invalid named capture referenced");
      }
    }
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Disjunction
  pp$1.regexp_disjunction = function(state) {
    var trackDisjunction = this.options.ecmaVersion >= 16;
    if (trackDisjunction) { state.branchID = new BranchID(state.branchID, null); }
    this.regexp_alternative(state);
    while (state.eat(0x7C /* | */)) {
      if (trackDisjunction) { state.branchID = state.branchID.sibling(); }
      this.regexp_alternative(state);
    }
    if (trackDisjunction) { state.branchID = state.branchID.parent; }

    // Make the same message as V8.
    if (this.regexp_eatQuantifier(state, true)) {
      state.raise("Nothing to repeat");
    }
    if (state.eat(0x7B /* { */)) {
      state.raise("Lone quantifier brackets");
    }
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Alternative
  pp$1.regexp_alternative = function(state) {
    while (state.pos < state.source.length && this.regexp_eatTerm(state)) {}
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-Term
  pp$1.regexp_eatTerm = function(state) {
    if (this.regexp_eatAssertion(state)) {
      // Handle `QuantifiableAssertion Quantifier` alternative.
      // `state.lastAssertionIsQuantifiable` is true if the last eaten Assertion
      // is a QuantifiableAssertion.
      if (state.lastAssertionIsQuantifiable && this.regexp_eatQuantifier(state)) {
        // Make the same message as V8.
        if (state.switchU) {
          state.raise("Invalid quantifier");
        }
      }
      return true
    }

    if (state.switchU ? this.regexp_eatAtom(state) : this.regexp_eatExtendedAtom(state)) {
      this.regexp_eatQuantifier(state);
      return true
    }

    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-Assertion
  pp$1.regexp_eatAssertion = function(state) {
    var start = state.pos;
    state.lastAssertionIsQuantifiable = false;

    // ^, $
    if (state.eat(0x5E /* ^ */) || state.eat(0x24 /* $ */)) {
      return true
    }

    // \b \B
    if (state.eat(0x5C /* \ */)) {
      if (state.eat(0x42 /* B */) || state.eat(0x62 /* b */)) {
        return true
      }
      state.pos = start;
    }

    // Lookahead / Lookbehind
    if (state.eat(0x28 /* ( */) && state.eat(0x3F /* ? */)) {
      var lookbehind = false;
      if (this.options.ecmaVersion >= 9) {
        lookbehind = state.eat(0x3C /* < */);
      }
      if (state.eat(0x3D /* = */) || state.eat(0x21 /* ! */)) {
        this.regexp_disjunction(state);
        if (!state.eat(0x29 /* ) */)) {
          state.raise("Unterminated group");
        }
        state.lastAssertionIsQuantifiable = !lookbehind;
        return true
      }
    }

    state.pos = start;
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Quantifier
  pp$1.regexp_eatQuantifier = function(state, noError) {
    if ( noError === void 0 ) noError = false;

    if (this.regexp_eatQuantifierPrefix(state, noError)) {
      state.eat(0x3F /* ? */);
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-QuantifierPrefix
  pp$1.regexp_eatQuantifierPrefix = function(state, noError) {
    return (
      state.eat(0x2A /* * */) ||
      state.eat(0x2B /* + */) ||
      state.eat(0x3F /* ? */) ||
      this.regexp_eatBracedQuantifier(state, noError)
    )
  };
  pp$1.regexp_eatBracedQuantifier = function(state, noError) {
    var start = state.pos;
    if (state.eat(0x7B /* { */)) {
      var min = 0, max = -1;
      if (this.regexp_eatDecimalDigits(state)) {
        min = state.lastIntValue;
        if (state.eat(0x2C /* , */) && this.regexp_eatDecimalDigits(state)) {
          max = state.lastIntValue;
        }
        if (state.eat(0x7D /* } */)) {
          // SyntaxError in https://www.ecma-international.org/ecma-262/8.0/#sec-term
          if (max !== -1 && max < min && !noError) {
            state.raise("numbers out of order in {} quantifier");
          }
          return true
        }
      }
      if (state.switchU && !noError) {
        state.raise("Incomplete quantifier");
      }
      state.pos = start;
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Atom
  pp$1.regexp_eatAtom = function(state) {
    return (
      this.regexp_eatPatternCharacters(state) ||
      state.eat(0x2E /* . */) ||
      this.regexp_eatReverseSolidusAtomEscape(state) ||
      this.regexp_eatCharacterClass(state) ||
      this.regexp_eatUncapturingGroup(state) ||
      this.regexp_eatCapturingGroup(state)
    )
  };
  pp$1.regexp_eatReverseSolidusAtomEscape = function(state) {
    var start = state.pos;
    if (state.eat(0x5C /* \ */)) {
      if (this.regexp_eatAtomEscape(state)) {
        return true
      }
      state.pos = start;
    }
    return false
  };
  pp$1.regexp_eatUncapturingGroup = function(state) {
    var start = state.pos;
    if (state.eat(0x28 /* ( */)) {
      if (state.eat(0x3F /* ? */) && state.eat(0x3A /* : */)) {
        this.regexp_disjunction(state);
        if (state.eat(0x29 /* ) */)) {
          return true
        }
        state.raise("Unterminated group");
      }
      state.pos = start;
    }
    return false
  };
  pp$1.regexp_eatCapturingGroup = function(state) {
    if (state.eat(0x28 /* ( */)) {
      if (this.options.ecmaVersion >= 9) {
        this.regexp_groupSpecifier(state);
      } else if (state.current() === 0x3F /* ? */) {
        state.raise("Invalid group");
      }
      this.regexp_disjunction(state);
      if (state.eat(0x29 /* ) */)) {
        state.numCapturingParens += 1;
        return true
      }
      state.raise("Unterminated group");
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-ExtendedAtom
  pp$1.regexp_eatExtendedAtom = function(state) {
    return (
      state.eat(0x2E /* . */) ||
      this.regexp_eatReverseSolidusAtomEscape(state) ||
      this.regexp_eatCharacterClass(state) ||
      this.regexp_eatUncapturingGroup(state) ||
      this.regexp_eatCapturingGroup(state) ||
      this.regexp_eatInvalidBracedQuantifier(state) ||
      this.regexp_eatExtendedPatternCharacter(state)
    )
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-InvalidBracedQuantifier
  pp$1.regexp_eatInvalidBracedQuantifier = function(state) {
    if (this.regexp_eatBracedQuantifier(state, true)) {
      state.raise("Nothing to repeat");
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-SyntaxCharacter
  pp$1.regexp_eatSyntaxCharacter = function(state) {
    var ch = state.current();
    if (isSyntaxCharacter(ch)) {
      state.lastIntValue = ch;
      state.advance();
      return true
    }
    return false
  };
  function isSyntaxCharacter(ch) {
    return (
      ch === 0x24 /* $ */ ||
      ch >= 0x28 /* ( */ && ch <= 0x2B /* + */ ||
      ch === 0x2E /* . */ ||
      ch === 0x3F /* ? */ ||
      ch >= 0x5B /* [ */ && ch <= 0x5E /* ^ */ ||
      ch >= 0x7B /* { */ && ch <= 0x7D /* } */
    )
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-PatternCharacter
  // But eat eager.
  pp$1.regexp_eatPatternCharacters = function(state) {
    var start = state.pos;
    var ch = 0;
    while ((ch = state.current()) !== -1 && !isSyntaxCharacter(ch)) {
      state.advance();
    }
    return state.pos !== start
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-ExtendedPatternCharacter
  pp$1.regexp_eatExtendedPatternCharacter = function(state) {
    var ch = state.current();
    if (
      ch !== -1 &&
      ch !== 0x24 /* $ */ &&
      !(ch >= 0x28 /* ( */ && ch <= 0x2B /* + */) &&
      ch !== 0x2E /* . */ &&
      ch !== 0x3F /* ? */ &&
      ch !== 0x5B /* [ */ &&
      ch !== 0x5E /* ^ */ &&
      ch !== 0x7C /* | */
    ) {
      state.advance();
      return true
    }
    return false
  };

  // GroupSpecifier ::
  //   [empty]
  //   `?` GroupName
  pp$1.regexp_groupSpecifier = function(state) {
    if (state.eat(0x3F /* ? */)) {
      if (!this.regexp_eatGroupName(state)) { state.raise("Invalid group"); }
      var trackDisjunction = this.options.ecmaVersion >= 16;
      var known = state.groupNames[state.lastStringValue];
      if (known) {
        if (trackDisjunction) {
          for (var i = 0, list = known; i < list.length; i += 1) {
            var altID = list[i];

            if (!altID.separatedFrom(state.branchID))
              { state.raise("Duplicate capture group name"); }
          }
        } else {
          state.raise("Duplicate capture group name");
        }
      }
      if (trackDisjunction) {
        (known || (state.groupNames[state.lastStringValue] = [])).push(state.branchID);
      } else {
        state.groupNames[state.lastStringValue] = true;
      }
    }
  };

  // GroupName ::
  //   `<` RegExpIdentifierName `>`
  // Note: this updates `state.lastStringValue` property with the eaten name.
  pp$1.regexp_eatGroupName = function(state) {
    state.lastStringValue = "";
    if (state.eat(0x3C /* < */)) {
      if (this.regexp_eatRegExpIdentifierName(state) && state.eat(0x3E /* > */)) {
        return true
      }
      state.raise("Invalid capture group name");
    }
    return false
  };

  // RegExpIdentifierName ::
  //   RegExpIdentifierStart
  //   RegExpIdentifierName RegExpIdentifierPart
  // Note: this updates `state.lastStringValue` property with the eaten name.
  pp$1.regexp_eatRegExpIdentifierName = function(state) {
    state.lastStringValue = "";
    if (this.regexp_eatRegExpIdentifierStart(state)) {
      state.lastStringValue += codePointToString(state.lastIntValue);
      while (this.regexp_eatRegExpIdentifierPart(state)) {
        state.lastStringValue += codePointToString(state.lastIntValue);
      }
      return true
    }
    return false
  };

  // RegExpIdentifierStart ::
  //   UnicodeIDStart
  //   `$`
  //   `_`
  //   `\` RegExpUnicodeEscapeSequence[+U]
  pp$1.regexp_eatRegExpIdentifierStart = function(state) {
    var start = state.pos;
    var forceU = this.options.ecmaVersion >= 11;
    var ch = state.current(forceU);
    state.advance(forceU);

    if (ch === 0x5C /* \ */ && this.regexp_eatRegExpUnicodeEscapeSequence(state, forceU)) {
      ch = state.lastIntValue;
    }
    if (isRegExpIdentifierStart(ch)) {
      state.lastIntValue = ch;
      return true
    }

    state.pos = start;
    return false
  };
  function isRegExpIdentifierStart(ch) {
    return isIdentifierStart(ch, true) || ch === 0x24 /* $ */ || ch === 0x5F /* _ */
  }

  // RegExpIdentifierPart ::
  //   UnicodeIDContinue
  //   `$`
  //   `_`
  //   `\` RegExpUnicodeEscapeSequence[+U]
  //   <ZWNJ>
  //   <ZWJ>
  pp$1.regexp_eatRegExpIdentifierPart = function(state) {
    var start = state.pos;
    var forceU = this.options.ecmaVersion >= 11;
    var ch = state.current(forceU);
    state.advance(forceU);

    if (ch === 0x5C /* \ */ && this.regexp_eatRegExpUnicodeEscapeSequence(state, forceU)) {
      ch = state.lastIntValue;
    }
    if (isRegExpIdentifierPart(ch)) {
      state.lastIntValue = ch;
      return true
    }

    state.pos = start;
    return false
  };
  function isRegExpIdentifierPart(ch) {
    return isIdentifierChar(ch, true) || ch === 0x24 /* $ */ || ch === 0x5F /* _ */ || ch === 0x200C /* <ZWNJ> */ || ch === 0x200D /* <ZWJ> */
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-AtomEscape
  pp$1.regexp_eatAtomEscape = function(state) {
    if (
      this.regexp_eatBackReference(state) ||
      this.regexp_eatCharacterClassEscape(state) ||
      this.regexp_eatCharacterEscape(state) ||
      (state.switchN && this.regexp_eatKGroupName(state))
    ) {
      return true
    }
    if (state.switchU) {
      // Make the same message as V8.
      if (state.current() === 0x63 /* c */) {
        state.raise("Invalid unicode escape");
      }
      state.raise("Invalid escape");
    }
    return false
  };
  pp$1.regexp_eatBackReference = function(state) {
    var start = state.pos;
    if (this.regexp_eatDecimalEscape(state)) {
      var n = state.lastIntValue;
      if (state.switchU) {
        // For SyntaxError in https://www.ecma-international.org/ecma-262/8.0/#sec-atomescape
        if (n > state.maxBackReference) {
          state.maxBackReference = n;
        }
        return true
      }
      if (n <= state.numCapturingParens) {
        return true
      }
      state.pos = start;
    }
    return false
  };
  pp$1.regexp_eatKGroupName = function(state) {
    if (state.eat(0x6B /* k */)) {
      if (this.regexp_eatGroupName(state)) {
        state.backReferenceNames.push(state.lastStringValue);
        return true
      }
      state.raise("Invalid named reference");
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-CharacterEscape
  pp$1.regexp_eatCharacterEscape = function(state) {
    return (
      this.regexp_eatControlEscape(state) ||
      this.regexp_eatCControlLetter(state) ||
      this.regexp_eatZero(state) ||
      this.regexp_eatHexEscapeSequence(state) ||
      this.regexp_eatRegExpUnicodeEscapeSequence(state, false) ||
      (!state.switchU && this.regexp_eatLegacyOctalEscapeSequence(state)) ||
      this.regexp_eatIdentityEscape(state)
    )
  };
  pp$1.regexp_eatCControlLetter = function(state) {
    var start = state.pos;
    if (state.eat(0x63 /* c */)) {
      if (this.regexp_eatControlLetter(state)) {
        return true
      }
      state.pos = start;
    }
    return false
  };
  pp$1.regexp_eatZero = function(state) {
    if (state.current() === 0x30 /* 0 */ && !isDecimalDigit(state.lookahead())) {
      state.lastIntValue = 0;
      state.advance();
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-ControlEscape
  pp$1.regexp_eatControlEscape = function(state) {
    var ch = state.current();
    if (ch === 0x74 /* t */) {
      state.lastIntValue = 0x09; /* \t */
      state.advance();
      return true
    }
    if (ch === 0x6E /* n */) {
      state.lastIntValue = 0x0A; /* \n */
      state.advance();
      return true
    }
    if (ch === 0x76 /* v */) {
      state.lastIntValue = 0x0B; /* \v */
      state.advance();
      return true
    }
    if (ch === 0x66 /* f */) {
      state.lastIntValue = 0x0C; /* \f */
      state.advance();
      return true
    }
    if (ch === 0x72 /* r */) {
      state.lastIntValue = 0x0D; /* \r */
      state.advance();
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-ControlLetter
  pp$1.regexp_eatControlLetter = function(state) {
    var ch = state.current();
    if (isControlLetter(ch)) {
      state.lastIntValue = ch % 0x20;
      state.advance();
      return true
    }
    return false
  };
  function isControlLetter(ch) {
    return (
      (ch >= 0x41 /* A */ && ch <= 0x5A /* Z */) ||
      (ch >= 0x61 /* a */ && ch <= 0x7A /* z */)
    )
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-RegExpUnicodeEscapeSequence
  pp$1.regexp_eatRegExpUnicodeEscapeSequence = function(state, forceU) {
    if ( forceU === void 0 ) forceU = false;

    var start = state.pos;
    var switchU = forceU || state.switchU;

    if (state.eat(0x75 /* u */)) {
      if (this.regexp_eatFixedHexDigits(state, 4)) {
        var lead = state.lastIntValue;
        if (switchU && lead >= 0xD800 && lead <= 0xDBFF) {
          var leadSurrogateEnd = state.pos;
          if (state.eat(0x5C /* \ */) && state.eat(0x75 /* u */) && this.regexp_eatFixedHexDigits(state, 4)) {
            var trail = state.lastIntValue;
            if (trail >= 0xDC00 && trail <= 0xDFFF) {
              state.lastIntValue = (lead - 0xD800) * 0x400 + (trail - 0xDC00) + 0x10000;
              return true
            }
          }
          state.pos = leadSurrogateEnd;
          state.lastIntValue = lead;
        }
        return true
      }
      if (
        switchU &&
        state.eat(0x7B /* { */) &&
        this.regexp_eatHexDigits(state) &&
        state.eat(0x7D /* } */) &&
        isValidUnicode(state.lastIntValue)
      ) {
        return true
      }
      if (switchU) {
        state.raise("Invalid unicode escape");
      }
      state.pos = start;
    }

    return false
  };
  function isValidUnicode(ch) {
    return ch >= 0 && ch <= 0x10FFFF
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-IdentityEscape
  pp$1.regexp_eatIdentityEscape = function(state) {
    if (state.switchU) {
      if (this.regexp_eatSyntaxCharacter(state)) {
        return true
      }
      if (state.eat(0x2F /* / */)) {
        state.lastIntValue = 0x2F; /* / */
        return true
      }
      return false
    }

    var ch = state.current();
    if (ch !== 0x63 /* c */ && (!state.switchN || ch !== 0x6B /* k */)) {
      state.lastIntValue = ch;
      state.advance();
      return true
    }

    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-DecimalEscape
  pp$1.regexp_eatDecimalEscape = function(state) {
    state.lastIntValue = 0;
    var ch = state.current();
    if (ch >= 0x31 /* 1 */ && ch <= 0x39 /* 9 */) {
      do {
        state.lastIntValue = 10 * state.lastIntValue + (ch - 0x30 /* 0 */);
        state.advance();
      } while ((ch = state.current()) >= 0x30 /* 0 */ && ch <= 0x39 /* 9 */)
      return true
    }
    return false
  };

  // Return values used by character set parsing methods, needed to
  // forbid negation of sets that can match strings.
  var CharSetNone = 0; // Nothing parsed
  var CharSetOk = 1; // Construct parsed, cannot contain strings
  var CharSetString = 2; // Construct parsed, can contain strings

  // https://www.ecma-international.org/ecma-262/8.0/#prod-CharacterClassEscape
  pp$1.regexp_eatCharacterClassEscape = function(state) {
    var ch = state.current();

    if (isCharacterClassEscape(ch)) {
      state.lastIntValue = -1;
      state.advance();
      return CharSetOk
    }

    var negate = false;
    if (
      state.switchU &&
      this.options.ecmaVersion >= 9 &&
      ((negate = ch === 0x50 /* P */) || ch === 0x70 /* p */)
    ) {
      state.lastIntValue = -1;
      state.advance();
      var result;
      if (
        state.eat(0x7B /* { */) &&
        (result = this.regexp_eatUnicodePropertyValueExpression(state)) &&
        state.eat(0x7D /* } */)
      ) {
        if (negate && result === CharSetString) { state.raise("Invalid property name"); }
        return result
      }
      state.raise("Invalid property name");
    }

    return CharSetNone
  };

  function isCharacterClassEscape(ch) {
    return (
      ch === 0x64 /* d */ ||
      ch === 0x44 /* D */ ||
      ch === 0x73 /* s */ ||
      ch === 0x53 /* S */ ||
      ch === 0x77 /* w */ ||
      ch === 0x57 /* W */
    )
  }

  // UnicodePropertyValueExpression ::
  //   UnicodePropertyName `=` UnicodePropertyValue
  //   LoneUnicodePropertyNameOrValue
  pp$1.regexp_eatUnicodePropertyValueExpression = function(state) {
    var start = state.pos;

    // UnicodePropertyName `=` UnicodePropertyValue
    if (this.regexp_eatUnicodePropertyName(state) && state.eat(0x3D /* = */)) {
      var name = state.lastStringValue;
      if (this.regexp_eatUnicodePropertyValue(state)) {
        var value = state.lastStringValue;
        this.regexp_validateUnicodePropertyNameAndValue(state, name, value);
        return CharSetOk
      }
    }
    state.pos = start;

    // LoneUnicodePropertyNameOrValue
    if (this.regexp_eatLoneUnicodePropertyNameOrValue(state)) {
      var nameOrValue = state.lastStringValue;
      return this.regexp_validateUnicodePropertyNameOrValue(state, nameOrValue)
    }
    return CharSetNone
  };

  pp$1.regexp_validateUnicodePropertyNameAndValue = function(state, name, value) {
    if (!hasOwn(state.unicodeProperties.nonBinary, name))
      { state.raise("Invalid property name"); }
    if (!state.unicodeProperties.nonBinary[name].test(value))
      { state.raise("Invalid property value"); }
  };

  pp$1.regexp_validateUnicodePropertyNameOrValue = function(state, nameOrValue) {
    if (state.unicodeProperties.binary.test(nameOrValue)) { return CharSetOk }
    if (state.switchV && state.unicodeProperties.binaryOfStrings.test(nameOrValue)) { return CharSetString }
    state.raise("Invalid property name");
  };

  // UnicodePropertyName ::
  //   UnicodePropertyNameCharacters
  pp$1.regexp_eatUnicodePropertyName = function(state) {
    var ch = 0;
    state.lastStringValue = "";
    while (isUnicodePropertyNameCharacter(ch = state.current())) {
      state.lastStringValue += codePointToString(ch);
      state.advance();
    }
    return state.lastStringValue !== ""
  };

  function isUnicodePropertyNameCharacter(ch) {
    return isControlLetter(ch) || ch === 0x5F /* _ */
  }

  // UnicodePropertyValue ::
  //   UnicodePropertyValueCharacters
  pp$1.regexp_eatUnicodePropertyValue = function(state) {
    var ch = 0;
    state.lastStringValue = "";
    while (isUnicodePropertyValueCharacter(ch = state.current())) {
      state.lastStringValue += codePointToString(ch);
      state.advance();
    }
    return state.lastStringValue !== ""
  };
  function isUnicodePropertyValueCharacter(ch) {
    return isUnicodePropertyNameCharacter(ch) || isDecimalDigit(ch)
  }

  // LoneUnicodePropertyNameOrValue ::
  //   UnicodePropertyValueCharacters
  pp$1.regexp_eatLoneUnicodePropertyNameOrValue = function(state) {
    return this.regexp_eatUnicodePropertyValue(state)
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-CharacterClass
  pp$1.regexp_eatCharacterClass = function(state) {
    if (state.eat(0x5B /* [ */)) {
      var negate = state.eat(0x5E /* ^ */);
      var result = this.regexp_classContents(state);
      if (!state.eat(0x5D /* ] */))
        { state.raise("Unterminated character class"); }
      if (negate && result === CharSetString)
        { state.raise("Negated character class may contain strings"); }
      return true
    }
    return false
  };

  // https://tc39.es/ecma262/#prod-ClassContents
  // https://www.ecma-international.org/ecma-262/8.0/#prod-ClassRanges
  pp$1.regexp_classContents = function(state) {
    if (state.current() === 0x5D /* ] */) { return CharSetOk }
    if (state.switchV) { return this.regexp_classSetExpression(state) }
    this.regexp_nonEmptyClassRanges(state);
    return CharSetOk
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-NonemptyClassRanges
  // https://www.ecma-international.org/ecma-262/8.0/#prod-NonemptyClassRangesNoDash
  pp$1.regexp_nonEmptyClassRanges = function(state) {
    while (this.regexp_eatClassAtom(state)) {
      var left = state.lastIntValue;
      if (state.eat(0x2D /* - */) && this.regexp_eatClassAtom(state)) {
        var right = state.lastIntValue;
        if (state.switchU && (left === -1 || right === -1)) {
          state.raise("Invalid character class");
        }
        if (left !== -1 && right !== -1 && left > right) {
          state.raise("Range out of order in character class");
        }
      }
    }
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-ClassAtom
  // https://www.ecma-international.org/ecma-262/8.0/#prod-ClassAtomNoDash
  pp$1.regexp_eatClassAtom = function(state) {
    var start = state.pos;

    if (state.eat(0x5C /* \ */)) {
      if (this.regexp_eatClassEscape(state)) {
        return true
      }
      if (state.switchU) {
        // Make the same message as V8.
        var ch$1 = state.current();
        if (ch$1 === 0x63 /* c */ || isOctalDigit(ch$1)) {
          state.raise("Invalid class escape");
        }
        state.raise("Invalid escape");
      }
      state.pos = start;
    }

    var ch = state.current();
    if (ch !== 0x5D /* ] */) {
      state.lastIntValue = ch;
      state.advance();
      return true
    }

    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-ClassEscape
  pp$1.regexp_eatClassEscape = function(state) {
    var start = state.pos;

    if (state.eat(0x62 /* b */)) {
      state.lastIntValue = 0x08; /* <BS> */
      return true
    }

    if (state.switchU && state.eat(0x2D /* - */)) {
      state.lastIntValue = 0x2D; /* - */
      return true
    }

    if (!state.switchU && state.eat(0x63 /* c */)) {
      if (this.regexp_eatClassControlLetter(state)) {
        return true
      }
      state.pos = start;
    }

    return (
      this.regexp_eatCharacterClassEscape(state) ||
      this.regexp_eatCharacterEscape(state)
    )
  };

  // https://tc39.es/ecma262/#prod-ClassSetExpression
  // https://tc39.es/ecma262/#prod-ClassUnion
  // https://tc39.es/ecma262/#prod-ClassIntersection
  // https://tc39.es/ecma262/#prod-ClassSubtraction
  pp$1.regexp_classSetExpression = function(state) {
    var result = CharSetOk, subResult;
    if (this.regexp_eatClassSetRange(state)) ; else if (subResult = this.regexp_eatClassSetOperand(state)) {
      if (subResult === CharSetString) { result = CharSetString; }
      // https://tc39.es/ecma262/#prod-ClassIntersection
      var start = state.pos;
      while (state.eatChars([0x26, 0x26] /* && */)) {
        if (
          state.current() !== 0x26 /* & */ &&
          (subResult = this.regexp_eatClassSetOperand(state))
        ) {
          if (subResult !== CharSetString) { result = CharSetOk; }
          continue
        }
        state.raise("Invalid character in character class");
      }
      if (start !== state.pos) { return result }
      // https://tc39.es/ecma262/#prod-ClassSubtraction
      while (state.eatChars([0x2D, 0x2D] /* -- */)) {
        if (this.regexp_eatClassSetOperand(state)) { continue }
        state.raise("Invalid character in character class");
      }
      if (start !== state.pos) { return result }
    } else {
      state.raise("Invalid character in character class");
    }
    // https://tc39.es/ecma262/#prod-ClassUnion
    for (;;) {
      if (this.regexp_eatClassSetRange(state)) { continue }
      subResult = this.regexp_eatClassSetOperand(state);
      if (!subResult) { return result }
      if (subResult === CharSetString) { result = CharSetString; }
    }
  };

  // https://tc39.es/ecma262/#prod-ClassSetRange
  pp$1.regexp_eatClassSetRange = function(state) {
    var start = state.pos;
    if (this.regexp_eatClassSetCharacter(state)) {
      var left = state.lastIntValue;
      if (state.eat(0x2D /* - */) && this.regexp_eatClassSetCharacter(state)) {
        var right = state.lastIntValue;
        if (left !== -1 && right !== -1 && left > right) {
          state.raise("Range out of order in character class");
        }
        return true
      }
      state.pos = start;
    }
    return false
  };

  // https://tc39.es/ecma262/#prod-ClassSetOperand
  pp$1.regexp_eatClassSetOperand = function(state) {
    if (this.regexp_eatClassSetCharacter(state)) { return CharSetOk }
    return this.regexp_eatClassStringDisjunction(state) || this.regexp_eatNestedClass(state)
  };

  // https://tc39.es/ecma262/#prod-NestedClass
  pp$1.regexp_eatNestedClass = function(state) {
    var start = state.pos;
    if (state.eat(0x5B /* [ */)) {
      var negate = state.eat(0x5E /* ^ */);
      var result = this.regexp_classContents(state);
      if (state.eat(0x5D /* ] */)) {
        if (negate && result === CharSetString) {
          state.raise("Negated character class may contain strings");
        }
        return result
      }
      state.pos = start;
    }
    if (state.eat(0x5C /* \ */)) {
      var result$1 = this.regexp_eatCharacterClassEscape(state);
      if (result$1) {
        return result$1
      }
      state.pos = start;
    }
    return null
  };

  // https://tc39.es/ecma262/#prod-ClassStringDisjunction
  pp$1.regexp_eatClassStringDisjunction = function(state) {
    var start = state.pos;
    if (state.eatChars([0x5C, 0x71] /* \q */)) {
      if (state.eat(0x7B /* { */)) {
        var result = this.regexp_classStringDisjunctionContents(state);
        if (state.eat(0x7D /* } */)) {
          return result
        }
      } else {
        // Make the same message as V8.
        state.raise("Invalid escape");
      }
      state.pos = start;
    }
    return null
  };

  // https://tc39.es/ecma262/#prod-ClassStringDisjunctionContents
  pp$1.regexp_classStringDisjunctionContents = function(state) {
    var result = this.regexp_classString(state);
    while (state.eat(0x7C /* | */)) {
      if (this.regexp_classString(state) === CharSetString) { result = CharSetString; }
    }
    return result
  };

  // https://tc39.es/ecma262/#prod-ClassString
  // https://tc39.es/ecma262/#prod-NonEmptyClassString
  pp$1.regexp_classString = function(state) {
    var count = 0;
    while (this.regexp_eatClassSetCharacter(state)) { count++; }
    return count === 1 ? CharSetOk : CharSetString
  };

  // https://tc39.es/ecma262/#prod-ClassSetCharacter
  pp$1.regexp_eatClassSetCharacter = function(state) {
    var start = state.pos;
    if (state.eat(0x5C /* \ */)) {
      if (
        this.regexp_eatCharacterEscape(state) ||
        this.regexp_eatClassSetReservedPunctuator(state)
      ) {
        return true
      }
      if (state.eat(0x62 /* b */)) {
        state.lastIntValue = 0x08; /* <BS> */
        return true
      }
      state.pos = start;
      return false
    }
    var ch = state.current();
    if (ch < 0 || ch === state.lookahead() && isClassSetReservedDoublePunctuatorCharacter(ch)) { return false }
    if (isClassSetSyntaxCharacter(ch)) { return false }
    state.advance();
    state.lastIntValue = ch;
    return true
  };

  // https://tc39.es/ecma262/#prod-ClassSetReservedDoublePunctuator
  function isClassSetReservedDoublePunctuatorCharacter(ch) {
    return (
      ch === 0x21 /* ! */ ||
      ch >= 0x23 /* # */ && ch <= 0x26 /* & */ ||
      ch >= 0x2A /* * */ && ch <= 0x2C /* , */ ||
      ch === 0x2E /* . */ ||
      ch >= 0x3A /* : */ && ch <= 0x40 /* @ */ ||
      ch === 0x5E /* ^ */ ||
      ch === 0x60 /* ` */ ||
      ch === 0x7E /* ~ */
    )
  }

  // https://tc39.es/ecma262/#prod-ClassSetSyntaxCharacter
  function isClassSetSyntaxCharacter(ch) {
    return (
      ch === 0x28 /* ( */ ||
      ch === 0x29 /* ) */ ||
      ch === 0x2D /* - */ ||
      ch === 0x2F /* / */ ||
      ch >= 0x5B /* [ */ && ch <= 0x5D /* ] */ ||
      ch >= 0x7B /* { */ && ch <= 0x7D /* } */
    )
  }

  // https://tc39.es/ecma262/#prod-ClassSetReservedPunctuator
  pp$1.regexp_eatClassSetReservedPunctuator = function(state) {
    var ch = state.current();
    if (isClassSetReservedPunctuator(ch)) {
      state.lastIntValue = ch;
      state.advance();
      return true
    }
    return false
  };

  // https://tc39.es/ecma262/#prod-ClassSetReservedPunctuator
  function isClassSetReservedPunctuator(ch) {
    return (
      ch === 0x21 /* ! */ ||
      ch === 0x23 /* # */ ||
      ch === 0x25 /* % */ ||
      ch === 0x26 /* & */ ||
      ch === 0x2C /* , */ ||
      ch === 0x2D /* - */ ||
      ch >= 0x3A /* : */ && ch <= 0x3E /* > */ ||
      ch === 0x40 /* @ */ ||
      ch === 0x60 /* ` */ ||
      ch === 0x7E /* ~ */
    )
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-ClassControlLetter
  pp$1.regexp_eatClassControlLetter = function(state) {
    var ch = state.current();
    if (isDecimalDigit(ch) || ch === 0x5F /* _ */) {
      state.lastIntValue = ch % 0x20;
      state.advance();
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-HexEscapeSequence
  pp$1.regexp_eatHexEscapeSequence = function(state) {
    var start = state.pos;
    if (state.eat(0x78 /* x */)) {
      if (this.regexp_eatFixedHexDigits(state, 2)) {
        return true
      }
      if (state.switchU) {
        state.raise("Invalid escape");
      }
      state.pos = start;
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-DecimalDigits
  pp$1.regexp_eatDecimalDigits = function(state) {
    var start = state.pos;
    var ch = 0;
    state.lastIntValue = 0;
    while (isDecimalDigit(ch = state.current())) {
      state.lastIntValue = 10 * state.lastIntValue + (ch - 0x30 /* 0 */);
      state.advance();
    }
    return state.pos !== start
  };
  function isDecimalDigit(ch) {
    return ch >= 0x30 /* 0 */ && ch <= 0x39 /* 9 */
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-HexDigits
  pp$1.regexp_eatHexDigits = function(state) {
    var start = state.pos;
    var ch = 0;
    state.lastIntValue = 0;
    while (isHexDigit(ch = state.current())) {
      state.lastIntValue = 16 * state.lastIntValue + hexToInt(ch);
      state.advance();
    }
    return state.pos !== start
  };
  function isHexDigit(ch) {
    return (
      (ch >= 0x30 /* 0 */ && ch <= 0x39 /* 9 */) ||
      (ch >= 0x41 /* A */ && ch <= 0x46 /* F */) ||
      (ch >= 0x61 /* a */ && ch <= 0x66 /* f */)
    )
  }
  function hexToInt(ch) {
    if (ch >= 0x41 /* A */ && ch <= 0x46 /* F */) {
      return 10 + (ch - 0x41 /* A */)
    }
    if (ch >= 0x61 /* a */ && ch <= 0x66 /* f */) {
      return 10 + (ch - 0x61 /* a */)
    }
    return ch - 0x30 /* 0 */
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-LegacyOctalEscapeSequence
  // Allows only 0-377(octal) i.e. 0-255(decimal).
  pp$1.regexp_eatLegacyOctalEscapeSequence = function(state) {
    if (this.regexp_eatOctalDigit(state)) {
      var n1 = state.lastIntValue;
      if (this.regexp_eatOctalDigit(state)) {
        var n2 = state.lastIntValue;
        if (n1 <= 3 && this.regexp_eatOctalDigit(state)) {
          state.lastIntValue = n1 * 64 + n2 * 8 + state.lastIntValue;
        } else {
          state.lastIntValue = n1 * 8 + n2;
        }
      } else {
        state.lastIntValue = n1;
      }
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-OctalDigit
  pp$1.regexp_eatOctalDigit = function(state) {
    var ch = state.current();
    if (isOctalDigit(ch)) {
      state.lastIntValue = ch - 0x30; /* 0 */
      state.advance();
      return true
    }
    state.lastIntValue = 0;
    return false
  };
  function isOctalDigit(ch) {
    return ch >= 0x30 /* 0 */ && ch <= 0x37 /* 7 */
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Hex4Digits
  // https://www.ecma-international.org/ecma-262/8.0/#prod-HexDigit
  // And HexDigit HexDigit in https://www.ecma-international.org/ecma-262/8.0/#prod-HexEscapeSequence
  pp$1.regexp_eatFixedHexDigits = function(state, length) {
    var start = state.pos;
    state.lastIntValue = 0;
    for (var i = 0; i < length; ++i) {
      var ch = state.current();
      if (!isHexDigit(ch)) {
        state.pos = start;
        return false
      }
      state.lastIntValue = 16 * state.lastIntValue + hexToInt(ch);
      state.advance();
    }
    return true
  };

  // Object type used to represent tokens. Note that normally, tokens
  // simply exist as properties on the parser object. This is only
  // used for the onToken callback and the external tokenizer.

  var Token = function Token(p) {
    this.type = p.type;
    this.value = p.value;
    this.start = p.start;
    this.end = p.end;
    if (p.options.locations)
      { this.loc = new SourceLocation(p, p.startLoc, p.endLoc); }
    if (p.options.ranges)
      { this.range = [p.start, p.end]; }
  };

  // ## Tokenizer

  var pp = Parser.prototype;

  // Move to the next token

  pp.next = function(ignoreEscapeSequenceInKeyword) {
    if (!ignoreEscapeSequenceInKeyword && this.type.keyword && this.containsEsc)
      { this.raiseRecoverable(this.start, "Escape sequence in keyword " + this.type.keyword); }
    if (this.options.onToken)
      { this.options.onToken(new Token(this)); }

    this.lastTokEnd = this.end;
    this.lastTokStart = this.start;
    this.lastTokEndLoc = this.endLoc;
    this.lastTokStartLoc = this.startLoc;
    this.nextToken();
  };

  pp.getToken = function() {
    this.next();
    return new Token(this)
  };

  // If we're in an ES6 environment, make parsers iterable
  if (typeof Symbol !== "undefined")
    { pp[Symbol.iterator] = function() {
      var this$1$1 = this;

      return {
        next: function () {
          var token = this$1$1.getToken();
          return {
            done: token.type === types$1.eof,
            value: token
          }
        }
      }
    }; }

  // Toggle strict mode. Re-reads the next number or string to please
  // pedantic tests (`"use strict"; 010;` should fail).

  // Read a single token, updating the parser object's token-related
  // properties.

  pp.nextToken = function() {
    var curContext = this.curContext();
    if (!curContext || !curContext.preserveSpace) { this.skipSpace(); }

    this.start = this.pos;
    if (this.options.locations) { this.startLoc = this.curPosition(); }
    if (this.pos >= this.input.length) { return this.finishToken(types$1.eof) }

    if (curContext.override) { return curContext.override(this) }
    else { this.readToken(this.fullCharCodeAtPos()); }
  };

  pp.readToken = function(code) {
    // Identifier or keyword. '\uXXXX' sequences are allowed in
    // identifiers, so '\' also dispatches to that.
    if (isIdentifierStart(code, this.options.ecmaVersion >= 6) || code === 92 /* '\' */)
      { return this.readWord() }

    return this.getTokenFromCode(code)
  };

  pp.fullCharCodeAtPos = function() {
    var code = this.input.charCodeAt(this.pos);
    if (code <= 0xd7ff || code >= 0xdc00) { return code }
    var next = this.input.charCodeAt(this.pos + 1);
    return next <= 0xdbff || next >= 0xe000 ? code : (code << 10) + next - 0x35fdc00
  };

  pp.skipBlockComment = function() {
    var startLoc = this.options.onComment && this.curPosition();
    var start = this.pos, end = this.input.indexOf("*/", this.pos += 2);
    if (end === -1) { this.raise(this.pos - 2, "Unterminated comment"); }
    this.pos = end + 2;
    if (this.options.locations) {
      for (var nextBreak = (void 0), pos = start; (nextBreak = nextLineBreak(this.input, pos, this.pos)) > -1;) {
        ++this.curLine;
        pos = this.lineStart = nextBreak;
      }
    }
    if (this.options.onComment)
      { this.options.onComment(true, this.input.slice(start + 2, end), start, this.pos,
                             startLoc, this.curPosition()); }
  };

  pp.skipLineComment = function(startSkip) {
    var start = this.pos;
    var startLoc = this.options.onComment && this.curPosition();
    var ch = this.input.charCodeAt(this.pos += startSkip);
    while (this.pos < this.input.length && !isNewLine(ch)) {
      ch = this.input.charCodeAt(++this.pos);
    }
    if (this.options.onComment)
      { this.options.onComment(false, this.input.slice(start + startSkip, this.pos), start, this.pos,
                             startLoc, this.curPosition()); }
  };

  // Called at the start of the parse and after every token. Skips
  // whitespace and comments, and.

  pp.skipSpace = function() {
    loop: while (this.pos < this.input.length) {
      var ch = this.input.charCodeAt(this.pos);
      switch (ch) {
      case 32: case 160: // ' '
        ++this.pos;
        break
      case 13:
        if (this.input.charCodeAt(this.pos + 1) === 10) {
          ++this.pos;
        }
      case 10: case 8232: case 8233:
        ++this.pos;
        if (this.options.locations) {
          ++this.curLine;
          this.lineStart = this.pos;
        }
        break
      case 47: // '/'
        switch (this.input.charCodeAt(this.pos + 1)) {
        case 42: // '*'
          this.skipBlockComment();
          break
        case 47:
          this.skipLineComment(2);
          break
        default:
          break loop
        }
        break
      default:
        if (ch > 8 && ch < 14 || ch >= 5760 && nonASCIIwhitespace.test(String.fromCharCode(ch))) {
          ++this.pos;
        } else {
          break loop
        }
      }
    }
  };

  // Called at the end of every token. Sets `end`, `val`, and
  // maintains `context` and `exprAllowed`, and skips the space after
  // the token, so that the next one's `start` will point at the
  // right position.

  pp.finishToken = function(type, val) {
    this.end = this.pos;
    if (this.options.locations) { this.endLoc = this.curPosition(); }
    var prevType = this.type;
    this.type = type;
    this.value = val;

    this.updateContext(prevType);
  };

  // ### Token reading

  // This is the function that is called to fetch the next token. It
  // is somewhat obscure, because it works in character codes rather
  // than characters, and because operator parsing has been inlined
  // into it.
  //
  // All in the name of speed.
  //
  pp.readToken_dot = function() {
    var next = this.input.charCodeAt(this.pos + 1);
    if (next >= 48 && next <= 57) { return this.readNumber(true) }
    var next2 = this.input.charCodeAt(this.pos + 2);
    if (this.options.ecmaVersion >= 6 && next === 46 && next2 === 46) { // 46 = dot '.'
      this.pos += 3;
      return this.finishToken(types$1.ellipsis)
    } else {
      ++this.pos;
      return this.finishToken(types$1.dot)
    }
  };

  pp.readToken_slash = function() { // '/'
    var next = this.input.charCodeAt(this.pos + 1);
    if (this.exprAllowed) { ++this.pos; return this.readRegexp() }
    if (next === 61) { return this.finishOp(types$1.assign, 2) }
    return this.finishOp(types$1.slash, 1)
  };

  pp.readToken_mult_modulo_exp = function(code) { // '%*'
    var next = this.input.charCodeAt(this.pos + 1);
    var size = 1;
    var tokentype = code === 42 ? types$1.star : types$1.modulo;

    // exponentiation operator ** and **=
    if (this.options.ecmaVersion >= 7 && code === 42 && next === 42) {
      ++size;
      tokentype = types$1.starstar;
      next = this.input.charCodeAt(this.pos + 2);
    }

    if (next === 61) { return this.finishOp(types$1.assign, size + 1) }
    return this.finishOp(tokentype, size)
  };

  pp.readToken_pipe_amp = function(code) { // '|&'
    var next = this.input.charCodeAt(this.pos + 1);
    if (next === code) {
      if (this.options.ecmaVersion >= 12) {
        var next2 = this.input.charCodeAt(this.pos + 2);
        if (next2 === 61) { return this.finishOp(types$1.assign, 3) }
      }
      return this.finishOp(code === 124 ? types$1.logicalOR : types$1.logicalAND, 2)
    }
    if (next === 61) { return this.finishOp(types$1.assign, 2) }
    return this.finishOp(code === 124 ? types$1.bitwiseOR : types$1.bitwiseAND, 1)
  };

  pp.readToken_caret = function() { // '^'
    var next = this.input.charCodeAt(this.pos + 1);
    if (next === 61) { return this.finishOp(types$1.assign, 2) }
    return this.finishOp(types$1.bitwiseXOR, 1)
  };

  pp.readToken_plus_min = function(code) { // '+-'
    var next = this.input.charCodeAt(this.pos + 1);
    if (next === code) {
      if (next === 45 && !this.inModule && this.input.charCodeAt(this.pos + 2) === 62 &&
          (this.lastTokEnd === 0 || lineBreak.test(this.input.slice(this.lastTokEnd, this.pos)))) {
        // A `-->` line comment
        this.skipLineComment(3);
        this.skipSpace();
        return this.nextToken()
      }
      return this.finishOp(types$1.incDec, 2)
    }
    if (next === 61) { return this.finishOp(types$1.assign, 2) }
    return this.finishOp(types$1.plusMin, 1)
  };

  pp.readToken_lt_gt = function(code) { // '<>'
    var next = this.input.charCodeAt(this.pos + 1);
    var size = 1;
    if (next === code) {
      size = code === 62 && this.input.charCodeAt(this.pos + 2) === 62 ? 3 : 2;
      if (this.input.charCodeAt(this.pos + size) === 61) { return this.finishOp(types$1.assign, size + 1) }
      return this.finishOp(types$1.bitShift, size)
    }
    if (next === 33 && code === 60 && !this.inModule && this.input.charCodeAt(this.pos + 2) === 45 &&
        this.input.charCodeAt(this.pos + 3) === 45) {
      // `<!--`, an XML-style comment that should be interpreted as a line comment
      this.skipLineComment(4);
      this.skipSpace();
      return this.nextToken()
    }
    if (next === 61) { size = 2; }
    return this.finishOp(types$1.relational, size)
  };

  pp.readToken_eq_excl = function(code) { // '=!'
    var next = this.input.charCodeAt(this.pos + 1);
    if (next === 61) { return this.finishOp(types$1.equality, this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2) }
    if (code === 61 && next === 62 && this.options.ecmaVersion >= 6) { // '=>'
      this.pos += 2;
      return this.finishToken(types$1.arrow)
    }
    return this.finishOp(code === 61 ? types$1.eq : types$1.prefix, 1)
  };

  pp.readToken_question = function() { // '?'
    var ecmaVersion = this.options.ecmaVersion;
    if (ecmaVersion >= 11) {
      var next = this.input.charCodeAt(this.pos + 1);
      if (next === 46) {
        var next2 = this.input.charCodeAt(this.pos + 2);
        if (next2 < 48 || next2 > 57) { return this.finishOp(types$1.questionDot, 2) }
      }
      if (next === 63) {
        if (ecmaVersion >= 12) {
          var next2$1 = this.input.charCodeAt(this.pos + 2);
          if (next2$1 === 61) { return this.finishOp(types$1.assign, 3) }
        }
        return this.finishOp(types$1.coalesce, 2)
      }
    }
    return this.finishOp(types$1.question, 1)
  };

  pp.readToken_numberSign = function() { // '#'
    var ecmaVersion = this.options.ecmaVersion;
    var code = 35; // '#'
    if (ecmaVersion >= 13) {
      ++this.pos;
      code = this.fullCharCodeAtPos();
      if (isIdentifierStart(code, true) || code === 92 /* '\' */) {
        return this.finishToken(types$1.privateId, this.readWord1())
      }
    }

    this.raise(this.pos, "Unexpected character '" + codePointToString(code) + "'");
  };

  pp.getTokenFromCode = function(code) {
    switch (code) {
    // The interpretation of a dot depends on whether it is followed
    // by a digit or another two dots.
    case 46: // '.'
      return this.readToken_dot()

    // Punctuation tokens.
    case 40: ++this.pos; return this.finishToken(types$1.parenL)
    case 41: ++this.pos; return this.finishToken(types$1.parenR)
    case 59: ++this.pos; return this.finishToken(types$1.semi)
    case 44: ++this.pos; return this.finishToken(types$1.comma)
    case 91: ++this.pos; return this.finishToken(types$1.bracketL)
    case 93: ++this.pos; return this.finishToken(types$1.bracketR)
    case 123: ++this.pos; return this.finishToken(types$1.braceL)
    case 125: ++this.pos; return this.finishToken(types$1.braceR)
    case 58: ++this.pos; return this.finishToken(types$1.colon)

    case 96: // '`'
      if (this.options.ecmaVersion < 6) { break }
      ++this.pos;
      return this.finishToken(types$1.backQuote)

    case 48: // '0'
      var next = this.input.charCodeAt(this.pos + 1);
      if (next === 120 || next === 88) { return this.readRadixNumber(16) } // '0x', '0X' - hex number
      if (this.options.ecmaVersion >= 6) {
        if (next === 111 || next === 79) { return this.readRadixNumber(8) } // '0o', '0O' - octal number
        if (next === 98 || next === 66) { return this.readRadixNumber(2) } // '0b', '0B' - binary number
      }

    // Anything else beginning with a digit is an integer, octal
    // number, or float.
    case 49: case 50: case 51: case 52: case 53: case 54: case 55: case 56: case 57: // 1-9
      return this.readNumber(false)

    // Quotes produce strings.
    case 34: case 39: // '"', "'"
      return this.readString(code)

    // Operators are parsed inline in tiny state machines. '=' (61) is
    // often referred to. `finishOp` simply skips the amount of
    // characters it is given as second argument, and returns a token
    // of the type given by its first argument.
    case 47: // '/'
      return this.readToken_slash()

    case 37: case 42: // '%*'
      return this.readToken_mult_modulo_exp(code)

    case 124: case 38: // '|&'
      return this.readToken_pipe_amp(code)

    case 94: // '^'
      return this.readToken_caret()

    case 43: case 45: // '+-'
      return this.readToken_plus_min(code)

    case 60: case 62: // '<>'
      return this.readToken_lt_gt(code)

    case 61: case 33: // '=!'
      return this.readToken_eq_excl(code)

    case 63: // '?'
      return this.readToken_question()

    case 126: // '~'
      return this.finishOp(types$1.prefix, 1)

    case 35: // '#'
      return this.readToken_numberSign()
    }

    this.raise(this.pos, "Unexpected character '" + codePointToString(code) + "'");
  };

  pp.finishOp = function(type, size) {
    var str = this.input.slice(this.pos, this.pos + size);
    this.pos += size;
    return this.finishToken(type, str)
  };

  pp.readRegexp = function() {
    var escaped, inClass, start = this.pos;
    for (;;) {
      if (this.pos >= this.input.length) { this.raise(start, "Unterminated regular expression"); }
      var ch = this.input.charAt(this.pos);
      if (lineBreak.test(ch)) { this.raise(start, "Unterminated regular expression"); }
      if (!escaped) {
        if (ch === "[") { inClass = true; }
        else if (ch === "]" && inClass) { inClass = false; }
        else if (ch === "/" && !inClass) { break }
        escaped = ch === "\\";
      } else { escaped = false; }
      ++this.pos;
    }
    var pattern = this.input.slice(start, this.pos);
    ++this.pos;
    var flagsStart = this.pos;
    var flags = this.readWord1();
    if (this.containsEsc) { this.unexpected(flagsStart); }

    // Validate pattern
    var state = this.regexpState || (this.regexpState = new RegExpValidationState(this));
    state.reset(start, pattern, flags);
    this.validateRegExpFlags(state);
    this.validateRegExpPattern(state);

    // Create Literal#value property value.
    var value = null;
    try {
      value = new RegExp(pattern, flags);
    } catch (e) {
      // ESTree requires null if it failed to instantiate RegExp object.
      // https://github.com/estree/estree/blob/a27003adf4fd7bfad44de9cef372a2eacd527b1c/es5.md#regexpliteral
    }

    return this.finishToken(types$1.regexp, {pattern: pattern, flags: flags, value: value})
  };

  // Read an integer in the given radix. Return null if zero digits
  // were read, the integer value otherwise. When `len` is given, this
  // will return `null` unless the integer has exactly `len` digits.

  pp.readInt = function(radix, len, maybeLegacyOctalNumericLiteral) {
    // `len` is used for character escape sequences. In that case, disallow separators.
    var allowSeparators = this.options.ecmaVersion >= 12 && len === undefined;

    // `maybeLegacyOctalNumericLiteral` is true if it doesn't have prefix (0x,0o,0b)
    // and isn't fraction part nor exponent part. In that case, if the first digit
    // is zero then disallow separators.
    var isLegacyOctalNumericLiteral = maybeLegacyOctalNumericLiteral && this.input.charCodeAt(this.pos) === 48;

    var start = this.pos, total = 0, lastCode = 0;
    for (var i = 0, e = len == null ? Infinity : len; i < e; ++i, ++this.pos) {
      var code = this.input.charCodeAt(this.pos), val = (void 0);

      if (allowSeparators && code === 95) {
        if (isLegacyOctalNumericLiteral) { this.raiseRecoverable(this.pos, "Numeric separator is not allowed in legacy octal numeric literals"); }
        if (lastCode === 95) { this.raiseRecoverable(this.pos, "Numeric separator must be exactly one underscore"); }
        if (i === 0) { this.raiseRecoverable(this.pos, "Numeric separator is not allowed at the first of digits"); }
        lastCode = code;
        continue
      }

      if (code >= 97) { val = code - 97 + 10; } // a
      else if (code >= 65) { val = code - 65 + 10; } // A
      else if (code >= 48 && code <= 57) { val = code - 48; } // 0-9
      else { val = Infinity; }
      if (val >= radix) { break }
      lastCode = code;
      total = total * radix + val;
    }

    if (allowSeparators && lastCode === 95) { this.raiseRecoverable(this.pos - 1, "Numeric separator is not allowed at the last of digits"); }
    if (this.pos === start || len != null && this.pos - start !== len) { return null }

    return total
  };

  function stringToNumber(str, isLegacyOctalNumericLiteral) {
    if (isLegacyOctalNumericLiteral) {
      return parseInt(str, 8)
    }

    // `parseFloat(value)` stops parsing at the first numeric separator then returns a wrong value.
    return parseFloat(str.replace(/_/g, ""))
  }

  function stringToBigInt(str) {
    if (typeof BigInt !== "function") {
      return null
    }

    // `BigInt(value)` throws syntax error if the string contains numeric separators.
    return BigInt(str.replace(/_/g, ""))
  }

  pp.readRadixNumber = function(radix) {
    var start = this.pos;
    this.pos += 2; // 0x
    var val = this.readInt(radix);
    if (val == null) { this.raise(this.start + 2, "Expected number in radix " + radix); }
    if (this.options.ecmaVersion >= 11 && this.input.charCodeAt(this.pos) === 110) {
      val = stringToBigInt(this.input.slice(start, this.pos));
      ++this.pos;
    } else if (isIdentifierStart(this.fullCharCodeAtPos())) { this.raise(this.pos, "Identifier directly after number"); }
    return this.finishToken(types$1.num, val)
  };

  // Read an integer, octal integer, or floating-point number.

  pp.readNumber = function(startsWithDot) {
    var start = this.pos;
    if (!startsWithDot && this.readInt(10, undefined, true) === null) { this.raise(start, "Invalid number"); }
    var octal = this.pos - start >= 2 && this.input.charCodeAt(start) === 48;
    if (octal && this.strict) { this.raise(start, "Invalid number"); }
    var next = this.input.charCodeAt(this.pos);
    if (!octal && !startsWithDot && this.options.ecmaVersion >= 11 && next === 110) {
      var val$1 = stringToBigInt(this.input.slice(start, this.pos));
      ++this.pos;
      if (isIdentifierStart(this.fullCharCodeAtPos())) { this.raise(this.pos, "Identifier directly after number"); }
      return this.finishToken(types$1.num, val$1)
    }
    if (octal && /[89]/.test(this.input.slice(start, this.pos))) { octal = false; }
    if (next === 46 && !octal) { // '.'
      ++this.pos;
      this.readInt(10);
      next = this.input.charCodeAt(this.pos);
    }
    if ((next === 69 || next === 101) && !octal) { // 'eE'
      next = this.input.charCodeAt(++this.pos);
      if (next === 43 || next === 45) { ++this.pos; } // '+-'
      if (this.readInt(10) === null) { this.raise(start, "Invalid number"); }
    }
    if (isIdentifierStart(this.fullCharCodeAtPos())) { this.raise(this.pos, "Identifier directly after number"); }

    var val = stringToNumber(this.input.slice(start, this.pos), octal);
    return this.finishToken(types$1.num, val)
  };

  // Read a string value, interpreting backslash-escapes.

  pp.readCodePoint = function() {
    var ch = this.input.charCodeAt(this.pos), code;

    if (ch === 123) { // '{'
      if (this.options.ecmaVersion < 6) { this.unexpected(); }
      var codePos = ++this.pos;
      code = this.readHexChar(this.input.indexOf("}", this.pos) - this.pos);
      ++this.pos;
      if (code > 0x10FFFF) { this.invalidStringToken(codePos, "Code point out of bounds"); }
    } else {
      code = this.readHexChar(4);
    }
    return code
  };

  pp.readString = function(quote) {
    var out = "", chunkStart = ++this.pos;
    for (;;) {
      if (this.pos >= this.input.length) { this.raise(this.start, "Unterminated string constant"); }
      var ch = this.input.charCodeAt(this.pos);
      if (ch === quote) { break }
      if (ch === 92) { // '\'
        out += this.input.slice(chunkStart, this.pos);
        out += this.readEscapedChar(false);
        chunkStart = this.pos;
      } else if (ch === 0x2028 || ch === 0x2029) {
        if (this.options.ecmaVersion < 10) { this.raise(this.start, "Unterminated string constant"); }
        ++this.pos;
        if (this.options.locations) {
          this.curLine++;
          this.lineStart = this.pos;
        }
      } else {
        if (isNewLine(ch)) { this.raise(this.start, "Unterminated string constant"); }
        ++this.pos;
      }
    }
    out += this.input.slice(chunkStart, this.pos++);
    return this.finishToken(types$1.string, out)
  };

  // Reads template string tokens.

  var INVALID_TEMPLATE_ESCAPE_ERROR = {};

  pp.tryReadTemplateToken = function() {
    this.inTemplateElement = true;
    try {
      this.readTmplToken();
    } catch (err) {
      if (err === INVALID_TEMPLATE_ESCAPE_ERROR) {
        this.readInvalidTemplateToken();
      } else {
        throw err
      }
    }

    this.inTemplateElement = false;
  };

  pp.invalidStringToken = function(position, message) {
    if (this.inTemplateElement && this.options.ecmaVersion >= 9) {
      throw INVALID_TEMPLATE_ESCAPE_ERROR
    } else {
      this.raise(position, message);
    }
  };

  pp.readTmplToken = function() {
    var out = "", chunkStart = this.pos;
    for (;;) {
      if (this.pos >= this.input.length) { this.raise(this.start, "Unterminated template"); }
      var ch = this.input.charCodeAt(this.pos);
      if (ch === 96 || ch === 36 && this.input.charCodeAt(this.pos + 1) === 123) { // '`', '${'
        if (this.pos === this.start && (this.type === types$1.template || this.type === types$1.invalidTemplate)) {
          if (ch === 36) {
            this.pos += 2;
            return this.finishToken(types$1.dollarBraceL)
          } else {
            ++this.pos;
            return this.finishToken(types$1.backQuote)
          }
        }
        out += this.input.slice(chunkStart, this.pos);
        return this.finishToken(types$1.template, out)
      }
      if (ch === 92) { // '\'
        out += this.input.slice(chunkStart, this.pos);
        out += this.readEscapedChar(true);
        chunkStart = this.pos;
      } else if (isNewLine(ch)) {
        out += this.input.slice(chunkStart, this.pos);
        ++this.pos;
        switch (ch) {
        case 13:
          if (this.input.charCodeAt(this.pos) === 10) { ++this.pos; }
        case 10:
          out += "\n";
          break
        default:
          out += String.fromCharCode(ch);
          break
        }
        if (this.options.locations) {
          ++this.curLine;
          this.lineStart = this.pos;
        }
        chunkStart = this.pos;
      } else {
        ++this.pos;
      }
    }
  };

  // Reads a template token to search for the end, without validating any escape sequences
  pp.readInvalidTemplateToken = function() {
    for (; this.pos < this.input.length; this.pos++) {
      switch (this.input[this.pos]) {
      case "\\":
        ++this.pos;
        break

      case "$":
        if (this.input[this.pos + 1] !== "{") { break }
        // fall through
      case "`":
        return this.finishToken(types$1.invalidTemplate, this.input.slice(this.start, this.pos))

      case "\r":
        if (this.input[this.pos + 1] === "\n") { ++this.pos; }
        // fall through
      case "\n": case "\u2028": case "\u2029":
        ++this.curLine;
        this.lineStart = this.pos + 1;
        break
      }
    }
    this.raise(this.start, "Unterminated template");
  };

  // Used to read escaped characters

  pp.readEscapedChar = function(inTemplate) {
    var ch = this.input.charCodeAt(++this.pos);
    ++this.pos;
    switch (ch) {
    case 110: return "\n" // 'n' -> '\n'
    case 114: return "\r" // 'r' -> '\r'
    case 120: return String.fromCharCode(this.readHexChar(2)) // 'x'
    case 117: return codePointToString(this.readCodePoint()) // 'u'
    case 116: return "\t" // 't' -> '\t'
    case 98: return "\b" // 'b' -> '\b'
    case 118: return "\u000b" // 'v' -> '\u000b'
    case 102: return "\f" // 'f' -> '\f'
    case 13: if (this.input.charCodeAt(this.pos) === 10) { ++this.pos; } // '\r\n'
    case 10: // ' \n'
      if (this.options.locations) { this.lineStart = this.pos; ++this.curLine; }
      return ""
    case 56:
    case 57:
      if (this.strict) {
        this.invalidStringToken(
          this.pos - 1,
          "Invalid escape sequence"
        );
      }
      if (inTemplate) {
        var codePos = this.pos - 1;

        this.invalidStringToken(
          codePos,
          "Invalid escape sequence in template string"
        );
      }
    default:
      if (ch >= 48 && ch <= 55) {
        var octalStr = this.input.substr(this.pos - 1, 3).match(/^[0-7]+/)[0];
        var octal = parseInt(octalStr, 8);
        if (octal > 255) {
          octalStr = octalStr.slice(0, -1);
          octal = parseInt(octalStr, 8);
        }
        this.pos += octalStr.length - 1;
        ch = this.input.charCodeAt(this.pos);
        if ((octalStr !== "0" || ch === 56 || ch === 57) && (this.strict || inTemplate)) {
          this.invalidStringToken(
            this.pos - 1 - octalStr.length,
            inTemplate
              ? "Octal literal in template string"
              : "Octal literal in strict mode"
          );
        }
        return String.fromCharCode(octal)
      }
      if (isNewLine(ch)) {
        // Unicode new line characters after \ get removed from output in both
        // template literals and strings
        if (this.options.locations) { this.lineStart = this.pos; ++this.curLine; }
        return ""
      }
      return String.fromCharCode(ch)
    }
  };

  // Used to read character escape sequences ('\x', '\u', '\U').

  pp.readHexChar = function(len) {
    var codePos = this.pos;
    var n = this.readInt(16, len);
    if (n === null) { this.invalidStringToken(codePos, "Bad character escape sequence"); }
    return n
  };

  // Read an identifier, and return it as a string. Sets `this.containsEsc`
  // to whether the word contained a '\u' escape.
  //
  // Incrementally adds only escaped chars, adding other chunks as-is
  // as a micro-optimization.

  pp.readWord1 = function() {
    this.containsEsc = false;
    var word = "", first = true, chunkStart = this.pos;
    var astral = this.options.ecmaVersion >= 6;
    while (this.pos < this.input.length) {
      var ch = this.fullCharCodeAtPos();
      if (isIdentifierChar(ch, astral)) {
        this.pos += ch <= 0xffff ? 1 : 2;
      } else if (ch === 92) { // "\"
        this.containsEsc = true;
        word += this.input.slice(chunkStart, this.pos);
        var escStart = this.pos;
        if (this.input.charCodeAt(++this.pos) !== 117) // "u"
          { this.invalidStringToken(this.pos, "Expecting Unicode escape sequence \\uXXXX"); }
        ++this.pos;
        var esc = this.readCodePoint();
        if (!(first ? isIdentifierStart : isIdentifierChar)(esc, astral))
          { this.invalidStringToken(escStart, "Invalid Unicode escape"); }
        word += codePointToString(esc);
        chunkStart = this.pos;
      } else {
        break
      }
      first = false;
    }
    return word + this.input.slice(chunkStart, this.pos)
  };

  // Read an identifier or keyword token. Will check for reserved
  // words when necessary.

  pp.readWord = function() {
    var word = this.readWord1();
    var type = types$1.name;
    if (this.keywords.test(word)) {
      type = keywords[word];
    }
    return this.finishToken(type, word)
  };

  // Acorn is a tiny, fast JavaScript parser written in JavaScript.
  //
  // Acorn was written by Marijn Haverbeke, Ingvar Stepanyan, and
  // various contributors and released under an MIT license.
  //
  // Git repositories for Acorn are available at
  //
  //     http://marijnhaverbeke.nl/git/acorn
  //     https://github.com/acornjs/acorn.git
  //
  // Please use the [github bug tracker][ghbt] to report issues.
  //
  // [ghbt]: https://github.com/acornjs/acorn/issues
  //
  // [walk]: util/walk.js


  var version = "8.12.0";

  Parser.acorn = {
    Parser: Parser,
    version: version,
    defaultOptions: defaultOptions,
    Position: Position,
    SourceLocation: SourceLocation,
    getLineInfo: getLineInfo,
    Node: Node,
    TokenType: TokenType,
    tokTypes: types$1,
    keywordTypes: keywords,
    TokContext: TokContext,
    tokContexts: types,
    isIdentifierChar: isIdentifierChar,
    isIdentifierStart: isIdentifierStart,
    Token: Token,
    isNewLine: isNewLine,
    lineBreak: lineBreak,
    lineBreakG: lineBreakG,
    nonASCIIwhitespace: nonASCIIwhitespace
  };

  // The main exported interface (under `self.acorn` when in the
  // browser) is a `parse` function that takes a code string and returns
  // an abstract syntax tree as specified by the [ESTree spec][estree].
  //
  // [estree]: https://github.com/estree/estree

  function parse(input, options) {
    return Parser.parse(input, options)
  }

  // This function tries to parse a single expression at a given
  // offset in a string. Useful for parsing mixed-language formats
  // that embed JavaScript expressions.

  function parseExpressionAt(input, pos, options) {
    return Parser.parseExpressionAt(input, pos, options)
  }

  // Acorn is organized as a tokenizer and a recursive-descent parser.
  // The `tokenizer` export provides an interface to the tokenizer.

  function tokenizer(input, options) {
    return Parser.tokenizer(input, options)
  }

  exports.Node = Node;
  exports.Parser = Parser;
  exports.Position = Position;
  exports.SourceLocation = SourceLocation;
  exports.TokContext = TokContext;
  exports.Token = Token;
  exports.TokenType = TokenType;
  exports.defaultOptions = defaultOptions;
  exports.getLineInfo = getLineInfo;
  exports.isIdentifierChar = isIdentifierChar;
  exports.isIdentifierStart = isIdentifierStart;
  exports.isNewLine = isNewLine;
  exports.keywordTypes = keywords;
  exports.lineBreak = lineBreak;
  exports.lineBreakG = lineBreakG;
  exports.nonASCIIwhitespace = nonASCIIwhitespace;
  exports.parse = parse;
  exports.parseExpressionAt = parseExpressionAt;
  exports.tokContexts = types;
  exports.tokTypes = types$1;
  exports.tokenizer = tokenizer;
  exports.version = version;

}));
/* --------------------------------------------------------------
         js/libs/acorn/acorn_loose.js
   -------------------------------------------------------------- */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('acorn')) :
  typeof define === 'function' && define.amd ? define(['exports', 'acorn'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory((global.acorn = global.acorn || {}, global.acorn.loose = {}), global.acorn));
})(this, (function (exports, acorn) { 'use strict';

  var dummyValue = "✖";

  function isDummy(node) { return node.name === dummyValue }

  function noop() {}

  var LooseParser = function LooseParser(input, options) {
    if ( options === void 0 ) options = {};

    this.toks = this.constructor.BaseParser.tokenizer(input, options);
    this.options = this.toks.options;
    this.input = this.toks.input;
    this.tok = this.last = {type: acorn.tokTypes.eof, start: 0, end: 0};
    this.tok.validateRegExpFlags = noop;
    this.tok.validateRegExpPattern = noop;
    if (this.options.locations) {
      var here = this.toks.curPosition();
      this.tok.loc = new acorn.SourceLocation(this.toks, here, here);
    }
    this.ahead = []; // Tokens ahead
    this.context = []; // Indentation contexted
    this.curIndent = 0;
    this.curLineStart = 0;
    this.nextLineStart = this.lineEnd(this.curLineStart) + 1;
    this.inAsync = false;
    this.inGenerator = false;
    this.inFunction = false;
  };

  LooseParser.prototype.startNode = function startNode () {
    return new acorn.Node(this.toks, this.tok.start, this.options.locations ? this.tok.loc.start : null)
  };

  LooseParser.prototype.storeCurrentPos = function storeCurrentPos () {
    return this.options.locations ? [this.tok.start, this.tok.loc.start] : this.tok.start
  };

  LooseParser.prototype.startNodeAt = function startNodeAt (pos) {
    if (this.options.locations) {
      return new acorn.Node(this.toks, pos[0], pos[1])
    } else {
      return new acorn.Node(this.toks, pos)
    }
  };

  LooseParser.prototype.finishNode = function finishNode (node, type) {
    node.type = type;
    node.end = this.last.end;
    if (this.options.locations)
      { node.loc.end = this.last.loc.end; }
    if (this.options.ranges)
      { node.range[1] = this.last.end; }
    return node
  };

  LooseParser.prototype.dummyNode = function dummyNode (type) {
    var dummy = this.startNode();
    dummy.type = type;
    dummy.end = dummy.start;
    if (this.options.locations)
      { dummy.loc.end = dummy.loc.start; }
    if (this.options.ranges)
      { dummy.range[1] = dummy.start; }
    this.last = {type: acorn.tokTypes.name, start: dummy.start, end: dummy.start, loc: dummy.loc};
    return dummy
  };

  LooseParser.prototype.dummyIdent = function dummyIdent () {
    var dummy = this.dummyNode("Identifier");
    dummy.name = dummyValue;
    return dummy
  };

  LooseParser.prototype.dummyString = function dummyString () {
    var dummy = this.dummyNode("Literal");
    dummy.value = dummy.raw = dummyValue;
    return dummy
  };

  LooseParser.prototype.eat = function eat (type) {
    if (this.tok.type === type) {
      this.next();
      return true
    } else {
      return false
    }
  };

  LooseParser.prototype.isContextual = function isContextual (name) {
    return this.tok.type === acorn.tokTypes.name && this.tok.value === name
  };

  LooseParser.prototype.eatContextual = function eatContextual (name) {
    return this.tok.value === name && this.eat(acorn.tokTypes.name)
  };

  LooseParser.prototype.canInsertSemicolon = function canInsertSemicolon () {
    return this.tok.type === acorn.tokTypes.eof || this.tok.type === acorn.tokTypes.braceR ||
      acorn.lineBreak.test(this.input.slice(this.last.end, this.tok.start))
  };

  LooseParser.prototype.semicolon = function semicolon () {
    return this.eat(acorn.tokTypes.semi)
  };

  LooseParser.prototype.expect = function expect (type) {
    if (this.eat(type)) { return true }
    for (var i = 1; i <= 2; i++) {
      if (this.lookAhead(i).type === type) {
        for (var j = 0; j < i; j++) { this.next(); }
        return true
      }
    }
  };

  LooseParser.prototype.pushCx = function pushCx () {
    this.context.push(this.curIndent);
  };

  LooseParser.prototype.popCx = function popCx () {
    this.curIndent = this.context.pop();
  };

  LooseParser.prototype.lineEnd = function lineEnd (pos) {
    while (pos < this.input.length && !acorn.isNewLine(this.input.charCodeAt(pos))) { ++pos; }
    return pos
  };

  LooseParser.prototype.indentationAfter = function indentationAfter (pos) {
    for (var count = 0;; ++pos) {
      var ch = this.input.charCodeAt(pos);
      if (ch === 32) { ++count; }
      else if (ch === 9) { count += this.options.tabSize; }
      else { return count }
    }
  };

  LooseParser.prototype.closes = function closes (closeTok, indent, line, blockHeuristic) {
    if (this.tok.type === closeTok || this.tok.type === acorn.tokTypes.eof) { return true }
    return line !== this.curLineStart && this.curIndent < indent && this.tokenStartsLine() &&
      (!blockHeuristic || this.nextLineStart >= this.input.length ||
       this.indentationAfter(this.nextLineStart) < indent)
  };

  LooseParser.prototype.tokenStartsLine = function tokenStartsLine () {
    for (var p = this.tok.start - 1; p >= this.curLineStart; --p) {
      var ch = this.input.charCodeAt(p);
      if (ch !== 9 && ch !== 32) { return false }
    }
    return true
  };

  LooseParser.prototype.extend = function extend (name, f) {
    this[name] = f(this[name]);
  };

  LooseParser.prototype.parse = function parse () {
    this.next();
    return this.parseTopLevel()
  };

  LooseParser.extend = function extend () {
      var plugins = [], len = arguments.length;
      while ( len-- ) plugins[ len ] = arguments[ len ];

    var cls = this;
    for (var i = 0; i < plugins.length; i++) { cls = plugins[i](cls); }
    return cls
  };

  LooseParser.parse = function parse (input, options) {
    return new this(input, options).parse()
  };

  // Allows plugins to extend the base parser / tokenizer used
  LooseParser.BaseParser = acorn.Parser;

  var lp$2 = LooseParser.prototype;

  function isSpace(ch) {
    return (ch < 14 && ch > 8) || ch === 32 || ch === 160 || acorn.isNewLine(ch)
  }

  lp$2.next = function() {
    this.last = this.tok;
    if (this.ahead.length)
      { this.tok = this.ahead.shift(); }
    else
      { this.tok = this.readToken(); }

    if (this.tok.start >= this.nextLineStart) {
      while (this.tok.start >= this.nextLineStart) {
        this.curLineStart = this.nextLineStart;
        this.nextLineStart = this.lineEnd(this.curLineStart) + 1;
      }
      this.curIndent = this.indentationAfter(this.curLineStart);
    }
  };

  lp$2.readToken = function() {
    for (;;) {
      try {
        this.toks.next();
        if (this.toks.type === acorn.tokTypes.dot &&
            this.input.substr(this.toks.end, 1) === "." &&
            this.options.ecmaVersion >= 6) {
          this.toks.end++;
          this.toks.type = acorn.tokTypes.ellipsis;
        }
        return new acorn.Token(this.toks)
      } catch (e) {
        if (!(e instanceof SyntaxError)) { throw e }

        // Try to skip some text, based on the error message, and then continue
        var msg = e.message, pos = e.raisedAt, replace = true;
        if (/unterminated/i.test(msg)) {
          pos = this.lineEnd(e.pos + 1);
          if (/string/.test(msg)) {
            replace = {start: e.pos, end: pos, type: acorn.tokTypes.string, value: this.input.slice(e.pos + 1, pos)};
          } else if (/regular expr/i.test(msg)) {
            var re = this.input.slice(e.pos, pos);
            try { re = new RegExp(re); } catch (e$1) { /* ignore compilation error due to new syntax */ }
            replace = {start: e.pos, end: pos, type: acorn.tokTypes.regexp, value: re};
          } else if (/template/.test(msg)) {
            replace = {
              start: e.pos,
              end: pos,
              type: acorn.tokTypes.template,
              value: this.input.slice(e.pos, pos)
            };
          } else {
            replace = false;
          }
        } else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix/i.test(msg)) {
          while (pos < this.input.length && !isSpace(this.input.charCodeAt(pos))) { ++pos; }
        } else if (/character escape|expected hexadecimal/i.test(msg)) {
          while (pos < this.input.length) {
            var ch = this.input.charCodeAt(pos++);
            if (ch === 34 || ch === 39 || acorn.isNewLine(ch)) { break }
          }
        } else if (/unexpected character/i.test(msg)) {
          pos++;
          replace = false;
        } else if (/regular expression/i.test(msg)) {
          replace = true;
        } else {
          throw e
        }
        this.resetTo(pos);
        if (replace === true) { replace = {start: pos, end: pos, type: acorn.tokTypes.name, value: dummyValue}; }
        if (replace) {
          if (this.options.locations)
            { replace.loc = new acorn.SourceLocation(
              this.toks,
              acorn.getLineInfo(this.input, replace.start),
              acorn.getLineInfo(this.input, replace.end)); }
          return replace
        }
      }
    }
  };

  lp$2.resetTo = function(pos) {
    this.toks.pos = pos;
    this.toks.containsEsc = false;
    var ch = this.input.charAt(pos - 1);
    this.toks.exprAllowed = !ch || /[[{(,;:?/*=+\-~!|&%^<>]/.test(ch) ||
      /[enwfd]/.test(ch) &&
      /\b(case|else|return|throw|new|in|(instance|type)?of|delete|void)$/.test(this.input.slice(pos - 10, pos));

    if (this.options.locations) {
      this.toks.curLine = 1;
      this.toks.lineStart = acorn.lineBreakG.lastIndex = 0;
      var match;
      while ((match = acorn.lineBreakG.exec(this.input)) && match.index < pos) {
        ++this.toks.curLine;
        this.toks.lineStart = match.index + match[0].length;
      }
    }
  };

  lp$2.lookAhead = function(n) {
    while (n > this.ahead.length)
      { this.ahead.push(this.readToken()); }
    return this.ahead[n - 1]
  };

  var lp$1 = LooseParser.prototype;

  lp$1.parseTopLevel = function() {
    var node = this.startNodeAt(this.options.locations ? [0, acorn.getLineInfo(this.input, 0)] : 0);
    node.body = [];
    while (this.tok.type !== acorn.tokTypes.eof) { node.body.push(this.parseStatement()); }
    this.toks.adaptDirectivePrologue(node.body);
    this.last = this.tok;
    node.sourceType = this.options.sourceType;
    return this.finishNode(node, "Program")
  };

  lp$1.parseStatement = function() {
    var starttype = this.tok.type, node = this.startNode(), kind;

    if (this.toks.isLet()) {
      starttype = acorn.tokTypes._var;
      kind = "let";
    }

    switch (starttype) {
    case acorn.tokTypes._break: case acorn.tokTypes._continue:
      this.next();
      var isBreak = starttype === acorn.tokTypes._break;
      if (this.semicolon() || this.canInsertSemicolon()) {
        node.label = null;
      } else {
        node.label = this.tok.type === acorn.tokTypes.name ? this.parseIdent() : null;
        this.semicolon();
      }
      return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")

    case acorn.tokTypes._debugger:
      this.next();
      this.semicolon();
      return this.finishNode(node, "DebuggerStatement")

    case acorn.tokTypes._do:
      this.next();
      node.body = this.parseStatement();
      node.test = this.eat(acorn.tokTypes._while) ? this.parseParenExpression() : this.dummyIdent();
      this.semicolon();
      return this.finishNode(node, "DoWhileStatement")

    case acorn.tokTypes._for:
      this.next(); // `for` keyword
      var isAwait = this.options.ecmaVersion >= 9 && this.eatContextual("await");

      this.pushCx();
      this.expect(acorn.tokTypes.parenL);
      if (this.tok.type === acorn.tokTypes.semi) { return this.parseFor(node, null) }
      var isLet = this.toks.isLet();
      if (isLet || this.tok.type === acorn.tokTypes._var || this.tok.type === acorn.tokTypes._const) {
        var init$1 = this.parseVar(this.startNode(), true, isLet ? "let" : this.tok.value);
        if (init$1.declarations.length === 1 && (this.tok.type === acorn.tokTypes._in || this.isContextual("of"))) {
          if (this.options.ecmaVersion >= 9 && this.tok.type !== acorn.tokTypes._in) {
            node.await = isAwait;
          }
          return this.parseForIn(node, init$1)
        }
        return this.parseFor(node, init$1)
      }
      var init = this.parseExpression(true);
      if (this.tok.type === acorn.tokTypes._in || this.isContextual("of")) {
        if (this.options.ecmaVersion >= 9 && this.tok.type !== acorn.tokTypes._in) {
          node.await = isAwait;
        }
        return this.parseForIn(node, this.toAssignable(init))
      }
      return this.parseFor(node, init)

    case acorn.tokTypes._function:
      this.next();
      return this.parseFunction(node, true)

    case acorn.tokTypes._if:
      this.next();
      node.test = this.parseParenExpression();
      node.consequent = this.parseStatement();
      node.alternate = this.eat(acorn.tokTypes._else) ? this.parseStatement() : null;
      return this.finishNode(node, "IfStatement")

    case acorn.tokTypes._return:
      this.next();
      if (this.eat(acorn.tokTypes.semi) || this.canInsertSemicolon()) { node.argument = null; }
      else { node.argument = this.parseExpression(); this.semicolon(); }
      return this.finishNode(node, "ReturnStatement")

    case acorn.tokTypes._switch:
      var blockIndent = this.curIndent, line = this.curLineStart;
      this.next();
      node.discriminant = this.parseParenExpression();
      node.cases = [];
      this.pushCx();
      this.expect(acorn.tokTypes.braceL);

      var cur;
      while (!this.closes(acorn.tokTypes.braceR, blockIndent, line, true)) {
        if (this.tok.type === acorn.tokTypes._case || this.tok.type === acorn.tokTypes._default) {
          var isCase = this.tok.type === acorn.tokTypes._case;
          if (cur) { this.finishNode(cur, "SwitchCase"); }
          node.cases.push(cur = this.startNode());
          cur.consequent = [];
          this.next();
          if (isCase) { cur.test = this.parseExpression(); }
          else { cur.test = null; }
          this.expect(acorn.tokTypes.colon);
        } else {
          if (!cur) {
            node.cases.push(cur = this.startNode());
            cur.consequent = [];
            cur.test = null;
          }
          cur.consequent.push(this.parseStatement());
        }
      }
      if (cur) { this.finishNode(cur, "SwitchCase"); }
      this.popCx();
      this.eat(acorn.tokTypes.braceR);
      return this.finishNode(node, "SwitchStatement")

    case acorn.tokTypes._throw:
      this.next();
      node.argument = this.parseExpression();
      this.semicolon();
      return this.finishNode(node, "ThrowStatement")

    case acorn.tokTypes._try:
      this.next();
      node.block = this.parseBlock();
      node.handler = null;
      if (this.tok.type === acorn.tokTypes._catch) {
        var clause = this.startNode();
        this.next();
        if (this.eat(acorn.tokTypes.parenL)) {
          clause.param = this.toAssignable(this.parseExprAtom(), true);
          this.expect(acorn.tokTypes.parenR);
        } else {
          clause.param = null;
        }
        clause.body = this.parseBlock();
        node.handler = this.finishNode(clause, "CatchClause");
      }
      node.finalizer = this.eat(acorn.tokTypes._finally) ? this.parseBlock() : null;
      if (!node.handler && !node.finalizer) { return node.block }
      return this.finishNode(node, "TryStatement")

    case acorn.tokTypes._var:
    case acorn.tokTypes._const:
      return this.parseVar(node, false, kind || this.tok.value)

    case acorn.tokTypes._while:
      this.next();
      node.test = this.parseParenExpression();
      node.body = this.parseStatement();
      return this.finishNode(node, "WhileStatement")

    case acorn.tokTypes._with:
      this.next();
      node.object = this.parseParenExpression();
      node.body = this.parseStatement();
      return this.finishNode(node, "WithStatement")

    case acorn.tokTypes.braceL:
      return this.parseBlock()

    case acorn.tokTypes.semi:
      this.next();
      return this.finishNode(node, "EmptyStatement")

    case acorn.tokTypes._class:
      return this.parseClass(true)

    case acorn.tokTypes._import:
      if (this.options.ecmaVersion > 10) {
        var nextType = this.lookAhead(1).type;
        if (nextType === acorn.tokTypes.parenL || nextType === acorn.tokTypes.dot) {
          node.expression = this.parseExpression();
          this.semicolon();
          return this.finishNode(node, "ExpressionStatement")
        }
      }

      return this.parseImport()

    case acorn.tokTypes._export:
      return this.parseExport()

    default:
      if (this.toks.isAsyncFunction()) {
        this.next();
        this.next();
        return this.parseFunction(node, true, true)
      }
      var expr = this.parseExpression();
      if (isDummy(expr)) {
        this.next();
        if (this.tok.type === acorn.tokTypes.eof) { return this.finishNode(node, "EmptyStatement") }
        return this.parseStatement()
      } else if (starttype === acorn.tokTypes.name && expr.type === "Identifier" && this.eat(acorn.tokTypes.colon)) {
        node.body = this.parseStatement();
        node.label = expr;
        return this.finishNode(node, "LabeledStatement")
      } else {
        node.expression = expr;
        this.semicolon();
        return this.finishNode(node, "ExpressionStatement")
      }
    }
  };

  lp$1.parseBlock = function() {
    var node = this.startNode();
    this.pushCx();
    this.expect(acorn.tokTypes.braceL);
    var blockIndent = this.curIndent, line = this.curLineStart;
    node.body = [];
    while (!this.closes(acorn.tokTypes.braceR, blockIndent, line, true))
      { node.body.push(this.parseStatement()); }
    this.popCx();
    this.eat(acorn.tokTypes.braceR);
    return this.finishNode(node, "BlockStatement")
  };

  lp$1.parseFor = function(node, init) {
    node.init = init;
    node.test = node.update = null;
    if (this.eat(acorn.tokTypes.semi) && this.tok.type !== acorn.tokTypes.semi) { node.test = this.parseExpression(); }
    if (this.eat(acorn.tokTypes.semi) && this.tok.type !== acorn.tokTypes.parenR) { node.update = this.parseExpression(); }
    this.popCx();
    this.expect(acorn.tokTypes.parenR);
    node.body = this.parseStatement();
    return this.finishNode(node, "ForStatement")
  };

  lp$1.parseForIn = function(node, init) {
    var type = this.tok.type === acorn.tokTypes._in ? "ForInStatement" : "ForOfStatement";
    this.next();
    node.left = init;
    node.right = this.parseExpression();
    this.popCx();
    this.expect(acorn.tokTypes.parenR);
    node.body = this.parseStatement();
    return this.finishNode(node, type)
  };

  lp$1.parseVar = function(node, noIn, kind) {
    node.kind = kind;
    this.next();
    node.declarations = [];
    do {
      var decl = this.startNode();
      decl.id = this.options.ecmaVersion >= 6 ? this.toAssignable(this.parseExprAtom(), true) : this.parseIdent();
      decl.init = this.eat(acorn.tokTypes.eq) ? this.parseMaybeAssign(noIn) : null;
      node.declarations.push(this.finishNode(decl, "VariableDeclarator"));
    } while (this.eat(acorn.tokTypes.comma))
    if (!node.declarations.length) {
      var decl$1 = this.startNode();
      decl$1.id = this.dummyIdent();
      node.declarations.push(this.finishNode(decl$1, "VariableDeclarator"));
    }
    if (!noIn) { this.semicolon(); }
    return this.finishNode(node, "VariableDeclaration")
  };

  lp$1.parseClass = function(isStatement) {
    var node = this.startNode();
    this.next();
    if (this.tok.type === acorn.tokTypes.name) { node.id = this.parseIdent(); }
    else if (isStatement === true) { node.id = this.dummyIdent(); }
    else { node.id = null; }
    node.superClass = this.eat(acorn.tokTypes._extends) ? this.parseExpression() : null;
    node.body = this.startNode();
    node.body.body = [];
    this.pushCx();
    var indent = this.curIndent + 1, line = this.curLineStart;
    this.eat(acorn.tokTypes.braceL);
    if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart; }
    while (!this.closes(acorn.tokTypes.braceR, indent, line)) {
      var element = this.parseClassElement();
      if (element) { node.body.body.push(element); }
    }
    this.popCx();
    if (!this.eat(acorn.tokTypes.braceR)) {
      // If there is no closing brace, make the node span to the start
      // of the next token (this is useful for Tern)
      this.last.end = this.tok.start;
      if (this.options.locations) { this.last.loc.end = this.tok.loc.start; }
    }
    this.semicolon();
    this.finishNode(node.body, "ClassBody");
    return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")
  };

  lp$1.parseClassElement = function() {
    if (this.eat(acorn.tokTypes.semi)) { return null }

    var ref = this.options;
    var ecmaVersion = ref.ecmaVersion;
    var locations = ref.locations;
    var indent = this.curIndent;
    var line = this.curLineStart;
    var node = this.startNode();
    var keyName = "";
    var isGenerator = false;
    var isAsync = false;
    var kind = "method";
    var isStatic = false;

    if (this.eatContextual("static")) {
      // Parse static init block
      if (ecmaVersion >= 13 && this.eat(acorn.tokTypes.braceL)) {
        this.parseClassStaticBlock(node);
        return node
      }
      if (this.isClassElementNameStart() || this.toks.type === acorn.tokTypes.star) {
        isStatic = true;
      } else {
        keyName = "static";
      }
    }
    node.static = isStatic;
    if (!keyName && ecmaVersion >= 8 && this.eatContextual("async")) {
      if ((this.isClassElementNameStart() || this.toks.type === acorn.tokTypes.star) && !this.canInsertSemicolon()) {
        isAsync = true;
      } else {
        keyName = "async";
      }
    }
    if (!keyName) {
      isGenerator = this.eat(acorn.tokTypes.star);
      var lastValue = this.toks.value;
      if (this.eatContextual("get") || this.eatContextual("set")) {
        if (this.isClassElementNameStart()) {
          kind = lastValue;
        } else {
          keyName = lastValue;
        }
      }
    }

    // Parse element name
    if (keyName) {
      // 'async', 'get', 'set', or 'static' were not a keyword contextually.
      // The last token is any of those. Make it the element name.
      node.computed = false;
      node.key = this.startNodeAt(locations ? [this.toks.lastTokStart, this.toks.lastTokStartLoc] : this.toks.lastTokStart);
      node.key.name = keyName;
      this.finishNode(node.key, "Identifier");
    } else {
      this.parseClassElementName(node);

      // From https://github.com/acornjs/acorn/blob/7deba41118d6384a2c498c61176b3cf434f69590/acorn-loose/src/statement.js#L291
      // Skip broken stuff.
      if (isDummy(node.key)) {
        if (isDummy(this.parseMaybeAssign())) { this.next(); }
        this.eat(acorn.tokTypes.comma);
        return null
      }
    }

    // Parse element value
    if (ecmaVersion < 13 || this.toks.type === acorn.tokTypes.parenL || kind !== "method" || isGenerator || isAsync) {
      // Method
      var isConstructor =
        !node.computed &&
        !node.static &&
        !isGenerator &&
        !isAsync &&
        kind === "method" && (
          node.key.type === "Identifier" && node.key.name === "constructor" ||
          node.key.type === "Literal" && node.key.value === "constructor"
        );
      node.kind = isConstructor ? "constructor" : kind;
      node.value = this.parseMethod(isGenerator, isAsync);
      this.finishNode(node, "MethodDefinition");
    } else {
      // Field
      if (this.eat(acorn.tokTypes.eq)) {
        if (this.curLineStart !== line && this.curIndent <= indent && this.tokenStartsLine()) {
          // Estimated the next line is the next class element by indentations.
          node.value = null;
        } else {
          var oldInAsync = this.inAsync;
          var oldInGenerator = this.inGenerator;
          this.inAsync = false;
          this.inGenerator = false;
          node.value = this.parseMaybeAssign();
          this.inAsync = oldInAsync;
          this.inGenerator = oldInGenerator;
        }
      } else {
        node.value = null;
      }
      this.semicolon();
      this.finishNode(node, "PropertyDefinition");
    }

    return node
  };

  lp$1.parseClassStaticBlock = function(node) {
    var blockIndent = this.curIndent, line = this.curLineStart;
    node.body = [];
    this.pushCx();
    while (!this.closes(acorn.tokTypes.braceR, blockIndent, line, true))
      { node.body.push(this.parseStatement()); }
    this.popCx();
    this.eat(acorn.tokTypes.braceR);

    return this.finishNode(node, "StaticBlock")
  };

  lp$1.isClassElementNameStart = function() {
    return this.toks.isClassElementNameStart()
  };

  lp$1.parseClassElementName = function(element) {
    if (this.toks.type === acorn.tokTypes.privateId) {
      element.computed = false;
      element.key = this.parsePrivateIdent();
    } else {
      this.parsePropertyName(element);
    }
  };

  lp$1.parseFunction = function(node, isStatement, isAsync) {
    var oldInAsync = this.inAsync, oldInGenerator = this.inGenerator, oldInFunction = this.inFunction;
    this.initFunction(node);
    if (this.options.ecmaVersion >= 6) {
      node.generator = this.eat(acorn.tokTypes.star);
    }
    if (this.options.ecmaVersion >= 8) {
      node.async = !!isAsync;
    }
    if (this.tok.type === acorn.tokTypes.name) { node.id = this.parseIdent(); }
    else if (isStatement === true) { node.id = this.dummyIdent(); }
    this.inAsync = node.async;
    this.inGenerator = node.generator;
    this.inFunction = true;
    node.params = this.parseFunctionParams();
    node.body = this.parseBlock();
    this.toks.adaptDirectivePrologue(node.body.body);
    this.inAsync = oldInAsync;
    this.inGenerator = oldInGenerator;
    this.inFunction = oldInFunction;
    return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression")
  };

  lp$1.parseExport = function() {
    var node = this.startNode();
    this.next();
    if (this.eat(acorn.tokTypes.star)) {
      if (this.options.ecmaVersion >= 11) {
        if (this.eatContextual("as")) {
          node.exported = this.parseExprAtom();
        } else {
          node.exported = null;
        }
      }
      node.source = this.eatContextual("from") ? this.parseExprAtom() : this.dummyString();
      this.semicolon();
      return this.finishNode(node, "ExportAllDeclaration")
    }
    if (this.eat(acorn.tokTypes._default)) {
      // export default (function foo() {}) // This is FunctionExpression.
      var isAsync;
      if (this.tok.type === acorn.tokTypes._function || (isAsync = this.toks.isAsyncFunction())) {
        var fNode = this.startNode();
        this.next();
        if (isAsync) { this.next(); }
        node.declaration = this.parseFunction(fNode, "nullableID", isAsync);
      } else if (this.tok.type === acorn.tokTypes._class) {
        node.declaration = this.parseClass("nullableID");
      } else {
        node.declaration = this.parseMaybeAssign();
        this.semicolon();
      }
      return this.finishNode(node, "ExportDefaultDeclaration")
    }
    if (this.tok.type.keyword || this.toks.isLet() || this.toks.isAsyncFunction()) {
      node.declaration = this.parseStatement();
      node.specifiers = [];
      node.source = null;
    } else {
      node.declaration = null;
      node.specifiers = this.parseExportSpecifierList();
      node.source = this.eatContextual("from") ? this.parseExprAtom() : null;
      this.semicolon();
    }
    return this.finishNode(node, "ExportNamedDeclaration")
  };

  lp$1.parseImport = function() {
    var node = this.startNode();
    this.next();
    if (this.tok.type === acorn.tokTypes.string) {
      node.specifiers = [];
      node.source = this.parseExprAtom();
    } else {
      var elt;
      if (this.tok.type === acorn.tokTypes.name && this.tok.value !== "from") {
        elt = this.startNode();
        elt.local = this.parseIdent();
        this.finishNode(elt, "ImportDefaultSpecifier");
        this.eat(acorn.tokTypes.comma);
      }
      node.specifiers = this.parseImportSpecifiers();
      node.source = this.eatContextual("from") && this.tok.type === acorn.tokTypes.string ? this.parseExprAtom() : this.dummyString();
      if (elt) { node.specifiers.unshift(elt); }
    }
    this.semicolon();
    return this.finishNode(node, "ImportDeclaration")
  };

  lp$1.parseImportSpecifiers = function() {
    var elts = [];
    if (this.tok.type === acorn.tokTypes.star) {
      var elt = this.startNode();
      this.next();
      elt.local = this.eatContextual("as") ? this.parseIdent() : this.dummyIdent();
      elts.push(this.finishNode(elt, "ImportNamespaceSpecifier"));
    } else {
      var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart;
      this.pushCx();
      this.eat(acorn.tokTypes.braceL);
      if (this.curLineStart > continuedLine) { continuedLine = this.curLineStart; }
      while (!this.closes(acorn.tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
        var elt$1 = this.startNode();
        if (this.eat(acorn.tokTypes.star)) {
          elt$1.local = this.eatContextual("as") ? this.parseModuleExportName() : this.dummyIdent();
          this.finishNode(elt$1, "ImportNamespaceSpecifier");
        } else {
          if (this.isContextual("from")) { break }
          elt$1.imported = this.parseModuleExportName();
          if (isDummy(elt$1.imported)) { break }
          elt$1.local = this.eatContextual("as") ? this.parseModuleExportName() : elt$1.imported;
          this.finishNode(elt$1, "ImportSpecifier");
        }
        elts.push(elt$1);
        this.eat(acorn.tokTypes.comma);
      }
      this.eat(acorn.tokTypes.braceR);
      this.popCx();
    }
    return elts
  };

  lp$1.parseExportSpecifierList = function() {
    var elts = [];
    var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart;
    this.pushCx();
    this.eat(acorn.tokTypes.braceL);
    if (this.curLineStart > continuedLine) { continuedLine = this.curLineStart; }
    while (!this.closes(acorn.tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
      if (this.isContextual("from")) { break }
      var elt = this.startNode();
      elt.local = this.parseModuleExportName();
      if (isDummy(elt.local)) { break }
      elt.exported = this.eatContextual("as") ? this.parseModuleExportName() : elt.local;
      this.finishNode(elt, "ExportSpecifier");
      elts.push(elt);
      this.eat(acorn.tokTypes.comma);
    }
    this.eat(acorn.tokTypes.braceR);
    this.popCx();
    return elts
  };

  lp$1.parseModuleExportName = function() {
    return this.options.ecmaVersion >= 13 && this.tok.type === acorn.tokTypes.string
      ? this.parseExprAtom()
      : this.parseIdent()
  };

  var lp = LooseParser.prototype;

  lp.checkLVal = function(expr) {
    if (!expr) { return expr }
    switch (expr.type) {
    case "Identifier":
    case "MemberExpression":
      return expr

    case "ParenthesizedExpression":
      expr.expression = this.checkLVal(expr.expression);
      return expr

    default:
      return this.dummyIdent()
    }
  };

  lp.parseExpression = function(noIn) {
    var start = this.storeCurrentPos();
    var expr = this.parseMaybeAssign(noIn);
    if (this.tok.type === acorn.tokTypes.comma) {
      var node = this.startNodeAt(start);
      node.expressions = [expr];
      while (this.eat(acorn.tokTypes.comma)) { node.expressions.push(this.parseMaybeAssign(noIn)); }
      return this.finishNode(node, "SequenceExpression")
    }
    return expr
  };

  lp.parseParenExpression = function() {
    this.pushCx();
    this.expect(acorn.tokTypes.parenL);
    var val = this.parseExpression();
    this.popCx();
    this.expect(acorn.tokTypes.parenR);
    return val
  };

  lp.parseMaybeAssign = function(noIn) {
    // `yield` should be an identifier reference if it's not in generator functions.
    if (this.inGenerator && this.toks.isContextual("yield")) {
      var node = this.startNode();
      this.next();
      if (this.semicolon() || this.canInsertSemicolon() || (this.tok.type !== acorn.tokTypes.star && !this.tok.type.startsExpr)) {
        node.delegate = false;
        node.argument = null;
      } else {
        node.delegate = this.eat(acorn.tokTypes.star);
        node.argument = this.parseMaybeAssign();
      }
      return this.finishNode(node, "YieldExpression")
    }

    var start = this.storeCurrentPos();
    var left = this.parseMaybeConditional(noIn);
    if (this.tok.type.isAssign) {
      var node$1 = this.startNodeAt(start);
      node$1.operator = this.tok.value;
      node$1.left = this.tok.type === acorn.tokTypes.eq ? this.toAssignable(left) : this.checkLVal(left);
      this.next();
      node$1.right = this.parseMaybeAssign(noIn);
      return this.finishNode(node$1, "AssignmentExpression")
    }
    return left
  };

  lp.parseMaybeConditional = function(noIn) {
    var start = this.storeCurrentPos();
    var expr = this.parseExprOps(noIn);
    if (this.eat(acorn.tokTypes.question)) {
      var node = this.startNodeAt(start);
      node.test = expr;
      node.consequent = this.parseMaybeAssign();
      node.alternate = this.expect(acorn.tokTypes.colon) ? this.parseMaybeAssign(noIn) : this.dummyIdent();
      return this.finishNode(node, "ConditionalExpression")
    }
    return expr
  };

  lp.parseExprOps = function(noIn) {
    var start = this.storeCurrentPos();
    var indent = this.curIndent, line = this.curLineStart;
    return this.parseExprOp(this.parseMaybeUnary(false), start, -1, noIn, indent, line)
  };

  lp.parseExprOp = function(left, start, minPrec, noIn, indent, line) {
    if (this.curLineStart !== line && this.curIndent < indent && this.tokenStartsLine()) { return left }
    var prec = this.tok.type.binop;
    if (prec != null && (!noIn || this.tok.type !== acorn.tokTypes._in)) {
      if (prec > minPrec) {
        var node = this.startNodeAt(start);
        node.left = left;
        node.operator = this.tok.value;
        this.next();
        if (this.curLineStart !== line && this.curIndent < indent && this.tokenStartsLine()) {
          node.right = this.dummyIdent();
        } else {
          var rightStart = this.storeCurrentPos();
          node.right = this.parseExprOp(this.parseMaybeUnary(false), rightStart, prec, noIn, indent, line);
        }
        this.finishNode(node, /&&|\|\||\?\?/.test(node.operator) ? "LogicalExpression" : "BinaryExpression");
        return this.parseExprOp(node, start, minPrec, noIn, indent, line)
      }
    }
    return left
  };

  lp.parseMaybeUnary = function(sawUnary) {
    var start = this.storeCurrentPos(), expr;
    if (this.options.ecmaVersion >= 8 && this.toks.isContextual("await") &&
        (this.inAsync || (this.toks.inModule && this.options.ecmaVersion >= 13) ||
         (!this.inFunction && this.options.allowAwaitOutsideFunction))) {
      expr = this.parseAwait();
      sawUnary = true;
    } else if (this.tok.type.prefix) {
      var node = this.startNode(), update = this.tok.type === acorn.tokTypes.incDec;
      if (!update) { sawUnary = true; }
      node.operator = this.tok.value;
      node.prefix = true;
      this.next();
      node.argument = this.parseMaybeUnary(true);
      if (update) { node.argument = this.checkLVal(node.argument); }
      expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
    } else if (this.tok.type === acorn.tokTypes.ellipsis) {
      var node$1 = this.startNode();
      this.next();
      node$1.argument = this.parseMaybeUnary(sawUnary);
      expr = this.finishNode(node$1, "SpreadElement");
    } else if (!sawUnary && this.tok.type === acorn.tokTypes.privateId) {
      expr = this.parsePrivateIdent();
    } else {
      expr = this.parseExprSubscripts();
      while (this.tok.type.postfix && !this.canInsertSemicolon()) {
        var node$2 = this.startNodeAt(start);
        node$2.operator = this.tok.value;
        node$2.prefix = false;
        node$2.argument = this.checkLVal(expr);
        this.next();
        expr = this.finishNode(node$2, "UpdateExpression");
      }
    }

    if (!sawUnary && this.eat(acorn.tokTypes.starstar)) {
      var node$3 = this.startNodeAt(start);
      node$3.operator = "**";
      node$3.left = expr;
      node$3.right = this.parseMaybeUnary(false);
      return this.finishNode(node$3, "BinaryExpression")
    }

    return expr
  };

  lp.parseExprSubscripts = function() {
    var start = this.storeCurrentPos();
    return this.parseSubscripts(this.parseExprAtom(), start, false, this.curIndent, this.curLineStart)
  };

  lp.parseSubscripts = function(base, start, noCalls, startIndent, line) {
    var optionalSupported = this.options.ecmaVersion >= 11;
    var optionalChained = false;
    for (;;) {
      if (this.curLineStart !== line && this.curIndent <= startIndent && this.tokenStartsLine()) {
        if (this.tok.type === acorn.tokTypes.dot && this.curIndent === startIndent)
          { --startIndent; }
        else
          { break }
      }

      var maybeAsyncArrow = base.type === "Identifier" && base.name === "async" && !this.canInsertSemicolon();
      var optional = optionalSupported && this.eat(acorn.tokTypes.questionDot);
      if (optional) {
        optionalChained = true;
      }

      if ((optional && this.tok.type !== acorn.tokTypes.parenL && this.tok.type !== acorn.tokTypes.bracketL && this.tok.type !== acorn.tokTypes.backQuote) || this.eat(acorn.tokTypes.dot)) {
        var node = this.startNodeAt(start);
        node.object = base;
        if (this.curLineStart !== line && this.curIndent <= startIndent && this.tokenStartsLine())
          { node.property = this.dummyIdent(); }
        else
          { node.property = this.parsePropertyAccessor() || this.dummyIdent(); }
        node.computed = false;
        if (optionalSupported) {
          node.optional = optional;
        }
        base = this.finishNode(node, "MemberExpression");
      } else if (this.tok.type === acorn.tokTypes.bracketL) {
        this.pushCx();
        this.next();
        var node$1 = this.startNodeAt(start);
        node$1.object = base;
        node$1.property = this.parseExpression();
        node$1.computed = true;
        if (optionalSupported) {
          node$1.optional = optional;
        }
        this.popCx();
        this.expect(acorn.tokTypes.bracketR);
        base = this.finishNode(node$1, "MemberExpression");
      } else if (!noCalls && this.tok.type === acorn.tokTypes.parenL) {
        var exprList = this.parseExprList(acorn.tokTypes.parenR);
        if (maybeAsyncArrow && this.eat(acorn.tokTypes.arrow))
          { return this.parseArrowExpression(this.startNodeAt(start), exprList, true) }
        var node$2 = this.startNodeAt(start);
        node$2.callee = base;
        node$2.arguments = exprList;
        if (optionalSupported) {
          node$2.optional = optional;
        }
        base = this.finishNode(node$2, "CallExpression");
      } else if (this.tok.type === acorn.tokTypes.backQuote) {
        var node$3 = this.startNodeAt(start);
        node$3.tag = base;
        node$3.quasi = this.parseTemplate();
        base = this.finishNode(node$3, "TaggedTemplateExpression");
      } else {
        break
      }
    }

    if (optionalChained) {
      var chainNode = this.startNodeAt(start);
      chainNode.expression = base;
      base = this.finishNode(chainNode, "ChainExpression");
    }
    return base
  };

  lp.parseExprAtom = function() {
    var node;
    switch (this.tok.type) {
    case acorn.tokTypes._this:
    case acorn.tokTypes._super:
      var type = this.tok.type === acorn.tokTypes._this ? "ThisExpression" : "Super";
      node = this.startNode();
      this.next();
      return this.finishNode(node, type)

    case acorn.tokTypes.name:
      var start = this.storeCurrentPos();
      var id = this.parseIdent();
      var isAsync = false;
      if (id.name === "async" && !this.canInsertSemicolon()) {
        if (this.eat(acorn.tokTypes._function)) {
          this.toks.overrideContext(acorn.tokContexts.f_expr);
          return this.parseFunction(this.startNodeAt(start), false, true)
        }
        if (this.tok.type === acorn.tokTypes.name) {
          id = this.parseIdent();
          isAsync = true;
        }
      }
      return this.eat(acorn.tokTypes.arrow) ? this.parseArrowExpression(this.startNodeAt(start), [id], isAsync) : id

    case acorn.tokTypes.regexp:
      node = this.startNode();
      var val = this.tok.value;
      node.regex = {pattern: val.pattern, flags: val.flags};
      node.value = val.value;
      node.raw = this.input.slice(this.tok.start, this.tok.end);
      this.next();
      return this.finishNode(node, "Literal")

    case acorn.tokTypes.num: case acorn.tokTypes.string:
      node = this.startNode();
      node.value = this.tok.value;
      node.raw = this.input.slice(this.tok.start, this.tok.end);
      if (this.tok.type === acorn.tokTypes.num && node.raw.charCodeAt(node.raw.length - 1) === 110) { node.bigint = node.raw.slice(0, -1).replace(/_/g, ""); }
      this.next();
      return this.finishNode(node, "Literal")

    case acorn.tokTypes._null: case acorn.tokTypes._true: case acorn.tokTypes._false:
      node = this.startNode();
      node.value = this.tok.type === acorn.tokTypes._null ? null : this.tok.type === acorn.tokTypes._true;
      node.raw = this.tok.type.keyword;
      this.next();
      return this.finishNode(node, "Literal")

    case acorn.tokTypes.parenL:
      var parenStart = this.storeCurrentPos();
      this.next();
      var inner = this.parseExpression();
      this.expect(acorn.tokTypes.parenR);
      if (this.eat(acorn.tokTypes.arrow)) {
        // (a,)=>a // SequenceExpression makes dummy in the last hole. Drop the dummy.
        var params = inner.expressions || [inner];
        if (params.length && isDummy(params[params.length - 1]))
          { params.pop(); }
        return this.parseArrowExpression(this.startNodeAt(parenStart), params)
      }
      if (this.options.preserveParens) {
        var par = this.startNodeAt(parenStart);
        par.expression = inner;
        inner = this.finishNode(par, "ParenthesizedExpression");
      }
      return inner

    case acorn.tokTypes.bracketL:
      node = this.startNode();
      node.elements = this.parseExprList(acorn.tokTypes.bracketR, true);
      return this.finishNode(node, "ArrayExpression")

    case acorn.tokTypes.braceL:
      this.toks.overrideContext(acorn.tokContexts.b_expr);
      return this.parseObj()

    case acorn.tokTypes._class:
      return this.parseClass(false)

    case acorn.tokTypes._function:
      node = this.startNode();
      this.next();
      return this.parseFunction(node, false)

    case acorn.tokTypes._new:
      return this.parseNew()

    case acorn.tokTypes.backQuote:
      return this.parseTemplate()

    case acorn.tokTypes._import:
      if (this.options.ecmaVersion >= 11) {
        return this.parseExprImport()
      } else {
        return this.dummyIdent()
      }

    default:
      return this.dummyIdent()
    }
  };

  lp.parseExprImport = function() {
    var node = this.startNode();
    var meta = this.parseIdent(true);
    switch (this.tok.type) {
    case acorn.tokTypes.parenL:
      return this.parseDynamicImport(node)
    case acorn.tokTypes.dot:
      node.meta = meta;
      return this.parseImportMeta(node)
    default:
      node.name = "import";
      return this.finishNode(node, "Identifier")
    }
  };

  lp.parseDynamicImport = function(node) {
    node.source = this.parseExprList(acorn.tokTypes.parenR)[0] || this.dummyString();
    return this.finishNode(node, "ImportExpression")
  };

  lp.parseImportMeta = function(node) {
    this.next(); // skip '.'
    node.property = this.parseIdent(true);
    return this.finishNode(node, "MetaProperty")
  };

  lp.parseNew = function() {
    var node = this.startNode(), startIndent = this.curIndent, line = this.curLineStart;
    var meta = this.parseIdent(true);
    if (this.options.ecmaVersion >= 6 && this.eat(acorn.tokTypes.dot)) {
      node.meta = meta;
      node.property = this.parseIdent(true);
      return this.finishNode(node, "MetaProperty")
    }
    var start = this.storeCurrentPos();
    node.callee = this.parseSubscripts(this.parseExprAtom(), start, true, startIndent, line);
    if (this.tok.type === acorn.tokTypes.parenL) {
      node.arguments = this.parseExprList(acorn.tokTypes.parenR);
    } else {
      node.arguments = [];
    }
    return this.finishNode(node, "NewExpression")
  };

  lp.parseTemplateElement = function() {
    var elem = this.startNode();

    // The loose parser accepts invalid unicode escapes even in untagged templates.
    if (this.tok.type === acorn.tokTypes.invalidTemplate) {
      elem.value = {
        raw: this.tok.value,
        cooked: null
      };
    } else {
      elem.value = {
        raw: this.input.slice(this.tok.start, this.tok.end).replace(/\r\n?/g, "\n"),
        cooked: this.tok.value
      };
    }
    this.next();
    elem.tail = this.tok.type === acorn.tokTypes.backQuote;
    return this.finishNode(elem, "TemplateElement")
  };

  lp.parseTemplate = function() {
    var node = this.startNode();
    this.next();
    node.expressions = [];
    var curElt = this.parseTemplateElement();
    node.quasis = [curElt];
    while (!curElt.tail) {
      this.next();
      node.expressions.push(this.parseExpression());
      if (this.expect(acorn.tokTypes.braceR)) {
        curElt = this.parseTemplateElement();
      } else {
        curElt = this.startNode();
        curElt.value = {cooked: "", raw: ""};
        curElt.tail = true;
        this.finishNode(curElt, "TemplateElement");
      }
      node.quasis.push(curElt);
    }
    this.expect(acorn.tokTypes.backQuote);
    return this.finishNode(node, "TemplateLiteral")
  };

  lp.parseObj = function() {
    var node = this.startNode();
    node.properties = [];
    this.pushCx();
    var indent = this.curIndent + 1, line = this.curLineStart;
    this.eat(acorn.tokTypes.braceL);
    if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart; }
    while (!this.closes(acorn.tokTypes.braceR, indent, line)) {
      var prop = this.startNode(), isGenerator = (void 0), isAsync = (void 0), start = (void 0);
      if (this.options.ecmaVersion >= 9 && this.eat(acorn.tokTypes.ellipsis)) {
        prop.argument = this.parseMaybeAssign();
        node.properties.push(this.finishNode(prop, "SpreadElement"));
        this.eat(acorn.tokTypes.comma);
        continue
      }
      if (this.options.ecmaVersion >= 6) {
        start = this.storeCurrentPos();
        prop.method = false;
        prop.shorthand = false;
        isGenerator = this.eat(acorn.tokTypes.star);
      }
      this.parsePropertyName(prop);
      if (this.toks.isAsyncProp(prop)) {
        isAsync = true;
        isGenerator = this.options.ecmaVersion >= 9 && this.eat(acorn.tokTypes.star);
        this.parsePropertyName(prop);
      } else {
        isAsync = false;
      }
      if (isDummy(prop.key)) { if (isDummy(this.parseMaybeAssign())) { this.next(); } this.eat(acorn.tokTypes.comma); continue }
      if (this.eat(acorn.tokTypes.colon)) {
        prop.kind = "init";
        prop.value = this.parseMaybeAssign();
      } else if (this.options.ecmaVersion >= 6 && (this.tok.type === acorn.tokTypes.parenL || this.tok.type === acorn.tokTypes.braceL)) {
        prop.kind = "init";
        prop.method = true;
        prop.value = this.parseMethod(isGenerator, isAsync);
      } else if (this.options.ecmaVersion >= 5 && prop.key.type === "Identifier" &&
                 !prop.computed && (prop.key.name === "get" || prop.key.name === "set") &&
                 (this.tok.type !== acorn.tokTypes.comma && this.tok.type !== acorn.tokTypes.braceR && this.tok.type !== acorn.tokTypes.eq)) {
        prop.kind = prop.key.name;
        this.parsePropertyName(prop);
        prop.value = this.parseMethod(false);
      } else {
        prop.kind = "init";
        if (this.options.ecmaVersion >= 6) {
          if (this.eat(acorn.tokTypes.eq)) {
            var assign = this.startNodeAt(start);
            assign.operator = "=";
            assign.left = prop.key;
            assign.right = this.parseMaybeAssign();
            prop.value = this.finishNode(assign, "AssignmentExpression");
          } else {
            prop.value = prop.key;
          }
        } else {
          prop.value = this.dummyIdent();
        }
        prop.shorthand = true;
      }
      node.properties.push(this.finishNode(prop, "Property"));
      this.eat(acorn.tokTypes.comma);
    }
    this.popCx();
    if (!this.eat(acorn.tokTypes.braceR)) {
      // If there is no closing brace, make the node span to the start
      // of the next token (this is useful for Tern)
      this.last.end = this.tok.start;
      if (this.options.locations) { this.last.loc.end = this.tok.loc.start; }
    }
    return this.finishNode(node, "ObjectExpression")
  };

  lp.parsePropertyName = function(prop) {
    if (this.options.ecmaVersion >= 6) {
      if (this.eat(acorn.tokTypes.bracketL)) {
        prop.computed = true;
        prop.key = this.parseExpression();
        this.expect(acorn.tokTypes.bracketR);
        return
      } else {
        prop.computed = false;
      }
    }
    var key = (this.tok.type === acorn.tokTypes.num || this.tok.type === acorn.tokTypes.string) ? this.parseExprAtom() : this.parseIdent();
    prop.key = key || this.dummyIdent();
  };

  lp.parsePropertyAccessor = function() {
    if (this.tok.type === acorn.tokTypes.name || this.tok.type.keyword) { return this.parseIdent() }
    if (this.tok.type === acorn.tokTypes.privateId) { return this.parsePrivateIdent() }
  };

  lp.parseIdent = function() {
    var name = this.tok.type === acorn.tokTypes.name ? this.tok.value : this.tok.type.keyword;
    if (!name) { return this.dummyIdent() }
    if (this.tok.type.keyword) { this.toks.type = acorn.tokTypes.name; }
    var node = this.startNode();
    this.next();
    node.name = name;
    return this.finishNode(node, "Identifier")
  };

  lp.parsePrivateIdent = function() {
    var node = this.startNode();
    node.name = this.tok.value;
    this.next();
    return this.finishNode(node, "PrivateIdentifier")
  };

  lp.initFunction = function(node) {
    node.id = null;
    node.params = [];
    if (this.options.ecmaVersion >= 6) {
      node.generator = false;
      node.expression = false;
    }
    if (this.options.ecmaVersion >= 8)
      { node.async = false; }
  };

  // Convert existing expression atom to assignable pattern
  // if possible.

  lp.toAssignable = function(node, binding) {
    if (!node || node.type === "Identifier" || (node.type === "MemberExpression" && !binding)) ; else if (node.type === "ParenthesizedExpression") {
      this.toAssignable(node.expression, binding);
    } else if (this.options.ecmaVersion < 6) {
      return this.dummyIdent()
    } else if (node.type === "ObjectExpression") {
      node.type = "ObjectPattern";
      for (var i = 0, list = node.properties; i < list.length; i += 1)
        {
        var prop = list[i];

        this.toAssignable(prop, binding);
      }
    } else if (node.type === "ArrayExpression") {
      node.type = "ArrayPattern";
      this.toAssignableList(node.elements, binding);
    } else if (node.type === "Property") {
      this.toAssignable(node.value, binding);
    } else if (node.type === "SpreadElement") {
      node.type = "RestElement";
      this.toAssignable(node.argument, binding);
    } else if (node.type === "AssignmentExpression") {
      node.type = "AssignmentPattern";
      delete node.operator;
    } else {
      return this.dummyIdent()
    }
    return node
  };

  lp.toAssignableList = function(exprList, binding) {
    for (var i = 0, list = exprList; i < list.length; i += 1)
      {
      var expr = list[i];

      this.toAssignable(expr, binding);
    }
    return exprList
  };

  lp.parseFunctionParams = function(params) {
    params = this.parseExprList(acorn.tokTypes.parenR);
    return this.toAssignableList(params, true)
  };

  lp.parseMethod = function(isGenerator, isAsync) {
    var node = this.startNode(), oldInAsync = this.inAsync, oldInGenerator = this.inGenerator, oldInFunction = this.inFunction;
    this.initFunction(node);
    if (this.options.ecmaVersion >= 6)
      { node.generator = !!isGenerator; }
    if (this.options.ecmaVersion >= 8)
      { node.async = !!isAsync; }
    this.inAsync = node.async;
    this.inGenerator = node.generator;
    this.inFunction = true;
    node.params = this.parseFunctionParams();
    node.body = this.parseBlock();
    this.toks.adaptDirectivePrologue(node.body.body);
    this.inAsync = oldInAsync;
    this.inGenerator = oldInGenerator;
    this.inFunction = oldInFunction;
    return this.finishNode(node, "FunctionExpression")
  };

  lp.parseArrowExpression = function(node, params, isAsync) {
    var oldInAsync = this.inAsync, oldInGenerator = this.inGenerator, oldInFunction = this.inFunction;
    this.initFunction(node);
    if (this.options.ecmaVersion >= 8)
      { node.async = !!isAsync; }
    this.inAsync = node.async;
    this.inGenerator = false;
    this.inFunction = true;
    node.params = this.toAssignableList(params, true);
    node.expression = this.tok.type !== acorn.tokTypes.braceL;
    if (node.expression) {
      node.body = this.parseMaybeAssign();
    } else {
      node.body = this.parseBlock();
      this.toks.adaptDirectivePrologue(node.body.body);
    }
    this.inAsync = oldInAsync;
    this.inGenerator = oldInGenerator;
    this.inFunction = oldInFunction;
    return this.finishNode(node, "ArrowFunctionExpression")
  };

  lp.parseExprList = function(close, allowEmpty) {
    this.pushCx();
    var indent = this.curIndent, line = this.curLineStart, elts = [];
    this.next(); // Opening bracket
    while (!this.closes(close, indent + 1, line)) {
      if (this.eat(acorn.tokTypes.comma)) {
        elts.push(allowEmpty ? null : this.dummyIdent());
        continue
      }
      var elt = this.parseMaybeAssign();
      if (isDummy(elt)) {
        if (this.closes(close, indent, line)) { break }
        this.next();
      } else {
        elts.push(elt);
      }
      this.eat(acorn.tokTypes.comma);
    }
    this.popCx();
    if (!this.eat(close)) {
      // If there is no closing brace, make the node span to the start
      // of the next token (this is useful for Tern)
      this.last.end = this.tok.start;
      if (this.options.locations) { this.last.loc.end = this.tok.loc.start; }
    }
    return elts
  };

  lp.parseAwait = function() {
    var node = this.startNode();
    this.next();
    node.argument = this.parseMaybeUnary();
    return this.finishNode(node, "AwaitExpression")
  };

  // Acorn: Loose parser
  //
  // This module provides an alternative parser that exposes that same
  // interface as the main module's `parse` function, but will try to
  // parse anything as JavaScript, repairing syntax error the best it
  // can. There are circumstances in which it will raise an error and
  // give up, but they are very rare. The resulting AST will be a mostly
  // valid JavaScript AST (as per the [Mozilla parser API][api], except
  // that:
  //
  // - Return outside functions is allowed
  //
  // - Label consistency (no conflicts, break only to existing labels)
  //   is not enforced.
  //
  // - Bogus Identifier nodes with a name of `"✖"` are inserted whenever
  //   the parser got too confused to return anything meaningful.
  //
  // [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API
  //
  // The expected use for this is to *first* try `acorn.parse`, and only
  // if that fails switch to the loose parser. The loose parser might
  // parse badly indented code incorrectly, so **don't** use it as your
  // default parser.
  //
  // Quite a lot of acorn.js is duplicated here. The alternative was to
  // add a *lot* of extra cruft to that file, making it less readable
  // and slower. Copying and editing the code allowed me to make
  // invasive changes and simplifications without creating a complicated
  // tangle.


  acorn.defaultOptions.tabSize = 4;

  function parse(input, options) {
    return LooseParser.parse(input, options)
  }

  exports.LooseParser = LooseParser;
  exports.isDummy = isDummy;
  exports.parse = parse;

}));
/* --------------------------------------------------------------
         js/libs/acorn/walk.js
   -------------------------------------------------------------- */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory((global.acorn = global.acorn || {}, global.acorn.walk = {})));
})(this, (function (exports) { 'use strict';

  // AST walker module for ESTree compatible trees

  // A simple walk is one where you simply specify callbacks to be
  // called on specific nodes. The last two arguments are optional. A
  // simple use would be
  //
  //     walk.simple(myTree, {
  //         Expression: function(node) { ... }
  //     });
  //
  // to do something with all expressions. All ESTree node types
  // can be used to identify node types, as well as Expression and
  // Statement, which denote categories of nodes.
  //
  // The base argument can be used to pass a custom (recursive)
  // walker, and state can be used to give this walked an initial
  // state.

  function simple(node, visitors, baseVisitor, state, override) {
    if (!baseVisitor) { baseVisitor = base
    ; }(function c(node, st, override) {
      var type = override || node.type;
      baseVisitor[type](node, st, c);
      if (visitors[type]) { visitors[type](node, st); }
    })(node, state, override);
  }

  // An ancestor walk keeps an array of ancestor nodes (including the
  // current node) and passes them to the callback as third parameter
  // (and also as state parameter when no other state is present).
  function ancestor(node, visitors, baseVisitor, state, override) {
    var ancestors = [];
    if (!baseVisitor) { baseVisitor = base
    ; }(function c(node, st, override) {
      var type = override || node.type;
      var isNew = node !== ancestors[ancestors.length - 1];
      if (isNew) { ancestors.push(node); }
      baseVisitor[type](node, st, c);
      if (visitors[type]) { visitors[type](node, st || ancestors, ancestors); }
      if (isNew) { ancestors.pop(); }
    })(node, state, override);
  }

  // A recursive walk is one where your functions override the default
  // walkers. They can modify and replace the state parameter that's
  // threaded through the walk, and can opt how and whether to walk
  // their child nodes (by calling their third argument on these
  // nodes).
  function recursive(node, state, funcs, baseVisitor, override) {
    var visitor = funcs ? make(funcs, baseVisitor || undefined) : baseVisitor
    ;(function c(node, st, override) {
      visitor[override || node.type](node, st, c);
    })(node, state, override);
  }

  function makeTest(test) {
    if (typeof test === "string")
      { return function (type) { return type === test; } }
    else if (!test)
      { return function () { return true; } }
    else
      { return test }
  }

  var Found = function Found(node, state) { this.node = node; this.state = state; };

  // A full walk triggers the callback on each node
  function full(node, callback, baseVisitor, state, override) {
    if (!baseVisitor) { baseVisitor = base; }
    var last
    ;(function c(node, st, override) {
      var type = override || node.type;
      baseVisitor[type](node, st, c);
      if (last !== node) {
        callback(node, st, type);
        last = node;
      }
    })(node, state, override);
  }

  // An fullAncestor walk is like an ancestor walk, but triggers
  // the callback on each node
  function fullAncestor(node, callback, baseVisitor, state) {
    if (!baseVisitor) { baseVisitor = base; }
    var ancestors = [], last
    ;(function c(node, st, override) {
      var type = override || node.type;
      var isNew = node !== ancestors[ancestors.length - 1];
      if (isNew) { ancestors.push(node); }
      baseVisitor[type](node, st, c);
      if (last !== node) {
        callback(node, st || ancestors, ancestors, type);
        last = node;
      }
      if (isNew) { ancestors.pop(); }
    })(node, state);
  }

  // Find a node with a given start, end, and type (all are optional,
  // null can be used as wildcard). Returns a {node, state} object, or
  // undefined when it doesn't find a matching node.
  function findNodeAt(node, start, end, test, baseVisitor, state) {
    if (!baseVisitor) { baseVisitor = base; }
    test = makeTest(test);
    try {
      (function c(node, st, override) {
        var type = override || node.type;
        if ((start == null || node.start <= start) &&
            (end == null || node.end >= end))
          { baseVisitor[type](node, st, c); }
        if ((start == null || node.start === start) &&
            (end == null || node.end === end) &&
            test(type, node))
          { throw new Found(node, st) }
      })(node, state);
    } catch (e) {
      if (e instanceof Found) { return e }
      throw e
    }
  }

  // Find the innermost node of a given type that contains the given
  // position. Interface similar to findNodeAt.
  function findNodeAround(node, pos, test, baseVisitor, state) {
    test = makeTest(test);
    if (!baseVisitor) { baseVisitor = base; }
    try {
      (function c(node, st, override) {
        var type = override || node.type;
        if (node.start > pos || node.end < pos) { return }
        baseVisitor[type](node, st, c);
        if (test(type, node)) { throw new Found(node, st) }
      })(node, state);
    } catch (e) {
      if (e instanceof Found) { return e }
      throw e
    }
  }

  // Find the outermost matching node after a given position.
  function findNodeAfter(node, pos, test, baseVisitor, state) {
    test = makeTest(test);
    if (!baseVisitor) { baseVisitor = base; }
    try {
      (function c(node, st, override) {
        if (node.end < pos) { return }
        var type = override || node.type;
        if (node.start >= pos && test(type, node)) { throw new Found(node, st) }
        baseVisitor[type](node, st, c);
      })(node, state);
    } catch (e) {
      if (e instanceof Found) { return e }
      throw e
    }
  }

  // Find the outermost matching node before a given position.
  function findNodeBefore(node, pos, test, baseVisitor, state) {
    test = makeTest(test);
    if (!baseVisitor) { baseVisitor = base; }
    var max
    ;(function c(node, st, override) {
      if (node.start > pos) { return }
      var type = override || node.type;
      if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node))
        { max = new Found(node, st); }
      baseVisitor[type](node, st, c);
    })(node, state);
    return max
  }

  // Used to create a custom walker. Will fill in all missing node
  // type properties with the defaults.
  function make(funcs, baseVisitor) {
    var visitor = Object.create(baseVisitor || base);
    for (var type in funcs) { visitor[type] = funcs[type]; }
    return visitor
  }

  function skipThrough(node, st, c) { c(node, st); }
  function ignore(_node, _st, _c) {}

  // Node walkers.

  var base = {};

  base.Program = base.BlockStatement = base.StaticBlock = function (node, st, c) {
    for (var i = 0, list = node.body; i < list.length; i += 1)
      {
      var stmt = list[i];

      c(stmt, st, "Statement");
    }
  };
  base.Statement = skipThrough;
  base.EmptyStatement = ignore;
  base.ExpressionStatement = base.ParenthesizedExpression = base.ChainExpression =
    function (node, st, c) { return c(node.expression, st, "Expression"); };
  base.IfStatement = function (node, st, c) {
    c(node.test, st, "Expression");
    c(node.consequent, st, "Statement");
    if (node.alternate) { c(node.alternate, st, "Statement"); }
  };
  base.LabeledStatement = function (node, st, c) { return c(node.body, st, "Statement"); };
  base.BreakStatement = base.ContinueStatement = ignore;
  base.WithStatement = function (node, st, c) {
    c(node.object, st, "Expression");
    c(node.body, st, "Statement");
  };
  base.SwitchStatement = function (node, st, c) {
    c(node.discriminant, st, "Expression");
    for (var i$1 = 0, list$1 = node.cases; i$1 < list$1.length; i$1 += 1) {
      var cs = list$1[i$1];

      if (cs.test) { c(cs.test, st, "Expression"); }
      for (var i = 0, list = cs.consequent; i < list.length; i += 1)
        {
        var cons = list[i];

        c(cons, st, "Statement");
      }
    }
  };
  base.SwitchCase = function (node, st, c) {
    if (node.test) { c(node.test, st, "Expression"); }
    for (var i = 0, list = node.consequent; i < list.length; i += 1)
      {
      var cons = list[i];

      c(cons, st, "Statement");
    }
  };
  base.ReturnStatement = base.YieldExpression = base.AwaitExpression = function (node, st, c) {
    if (node.argument) { c(node.argument, st, "Expression"); }
  };
  base.ThrowStatement = base.SpreadElement =
    function (node, st, c) { return c(node.argument, st, "Expression"); };
  base.TryStatement = function (node, st, c) {
    c(node.block, st, "Statement");
    if (node.handler) { c(node.handler, st); }
    if (node.finalizer) { c(node.finalizer, st, "Statement"); }
  };
  base.CatchClause = function (node, st, c) {
    if (node.param) { c(node.param, st, "Pattern"); }
    c(node.body, st, "Statement");
  };
  base.WhileStatement = base.DoWhileStatement = function (node, st, c) {
    c(node.test, st, "Expression");
    c(node.body, st, "Statement");
  };
  base.ForStatement = function (node, st, c) {
    if (node.init) { c(node.init, st, "ForInit"); }
    if (node.test) { c(node.test, st, "Expression"); }
    if (node.update) { c(node.update, st, "Expression"); }
    c(node.body, st, "Statement");
  };
  base.ForInStatement = base.ForOfStatement = function (node, st, c) {
    c(node.left, st, "ForInit");
    c(node.right, st, "Expression");
    c(node.body, st, "Statement");
  };
  base.ForInit = function (node, st, c) {
    if (node.type === "VariableDeclaration") { c(node, st); }
    else { c(node, st, "Expression"); }
  };
  base.DebuggerStatement = ignore;

  base.FunctionDeclaration = function (node, st, c) { return c(node, st, "Function"); };
  base.VariableDeclaration = function (node, st, c) {
    for (var i = 0, list = node.declarations; i < list.length; i += 1)
      {
      var decl = list[i];

      c(decl, st);
    }
  };
  base.VariableDeclarator = function (node, st, c) {
    c(node.id, st, "Pattern");
    if (node.init) { c(node.init, st, "Expression"); }
  };

  base.Function = function (node, st, c) {
    if (node.id) { c(node.id, st, "Pattern"); }
    for (var i = 0, list = node.params; i < list.length; i += 1)
      {
      var param = list[i];

      c(param, st, "Pattern");
    }
    c(node.body, st, node.expression ? "Expression" : "Statement");
  };

  base.Pattern = function (node, st, c) {
    if (node.type === "Identifier")
      { c(node, st, "VariablePattern"); }
    else if (node.type === "MemberExpression")
      { c(node, st, "MemberPattern"); }
    else
      { c(node, st); }
  };
  base.VariablePattern = ignore;
  base.MemberPattern = skipThrough;
  base.RestElement = function (node, st, c) { return c(node.argument, st, "Pattern"); };
  base.ArrayPattern = function (node, st, c) {
    for (var i = 0, list = node.elements; i < list.length; i += 1) {
      var elt = list[i];

      if (elt) { c(elt, st, "Pattern"); }
    }
  };
  base.ObjectPattern = function (node, st, c) {
    for (var i = 0, list = node.properties; i < list.length; i += 1) {
      var prop = list[i];

      if (prop.type === "Property") {
        if (prop.computed) { c(prop.key, st, "Expression"); }
        c(prop.value, st, "Pattern");
      } else if (prop.type === "RestElement") {
        c(prop.argument, st, "Pattern");
      }
    }
  };

  base.Expression = skipThrough;
  base.ThisExpression = base.Super = base.MetaProperty = ignore;
  base.ArrayExpression = function (node, st, c) {
    for (var i = 0, list = node.elements; i < list.length; i += 1) {
      var elt = list[i];

      if (elt) { c(elt, st, "Expression"); }
    }
  };
  base.ObjectExpression = function (node, st, c) {
    for (var i = 0, list = node.properties; i < list.length; i += 1)
      {
      var prop = list[i];

      c(prop, st);
    }
  };
  base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration;
  base.SequenceExpression = function (node, st, c) {
    for (var i = 0, list = node.expressions; i < list.length; i += 1)
      {
      var expr = list[i];

      c(expr, st, "Expression");
    }
  };
  base.TemplateLiteral = function (node, st, c) {
    for (var i = 0, list = node.quasis; i < list.length; i += 1)
      {
      var quasi = list[i];

      c(quasi, st);
    }

    for (var i$1 = 0, list$1 = node.expressions; i$1 < list$1.length; i$1 += 1)
      {
      var expr = list$1[i$1];

      c(expr, st, "Expression");
    }
  };
  base.TemplateElement = ignore;
  base.UnaryExpression = base.UpdateExpression = function (node, st, c) {
    c(node.argument, st, "Expression");
  };
  base.BinaryExpression = base.LogicalExpression = function (node, st, c) {
    c(node.left, st, "Expression");
    c(node.right, st, "Expression");
  };
  base.AssignmentExpression = base.AssignmentPattern = function (node, st, c) {
    c(node.left, st, "Pattern");
    c(node.right, st, "Expression");
  };
  base.ConditionalExpression = function (node, st, c) {
    c(node.test, st, "Expression");
    c(node.consequent, st, "Expression");
    c(node.alternate, st, "Expression");
  };
  base.NewExpression = base.CallExpression = function (node, st, c) {
    c(node.callee, st, "Expression");
    if (node.arguments)
      { for (var i = 0, list = node.arguments; i < list.length; i += 1)
        {
          var arg = list[i];

          c(arg, st, "Expression");
        } }
  };
  base.MemberExpression = function (node, st, c) {
    c(node.object, st, "Expression");
    if (node.computed) { c(node.property, st, "Expression"); }
  };
  base.ExportNamedDeclaration = base.ExportDefaultDeclaration = function (node, st, c) {
    if (node.declaration)
      { c(node.declaration, st, node.type === "ExportNamedDeclaration" || node.declaration.id ? "Statement" : "Expression"); }
    if (node.source) { c(node.source, st, "Expression"); }
  };
  base.ExportAllDeclaration = function (node, st, c) {
    if (node.exported)
      { c(node.exported, st); }
    c(node.source, st, "Expression");
  };
  base.ImportDeclaration = function (node, st, c) {
    for (var i = 0, list = node.specifiers; i < list.length; i += 1)
      {
      var spec = list[i];

      c(spec, st);
    }
    c(node.source, st, "Expression");
  };
  base.ImportExpression = function (node, st, c) {
    c(node.source, st, "Expression");
  };
  base.ImportSpecifier = base.ImportDefaultSpecifier = base.ImportNamespaceSpecifier = base.Identifier = base.PrivateIdentifier = base.Literal = ignore;

  base.TaggedTemplateExpression = function (node, st, c) {
    c(node.tag, st, "Expression");
    c(node.quasi, st, "Expression");
  };
  base.ClassDeclaration = base.ClassExpression = function (node, st, c) { return c(node, st, "Class"); };
  base.Class = function (node, st, c) {
    if (node.id) { c(node.id, st, "Pattern"); }
    if (node.superClass) { c(node.superClass, st, "Expression"); }
    c(node.body, st);
  };
  base.ClassBody = function (node, st, c) {
    for (var i = 0, list = node.body; i < list.length; i += 1)
      {
      var elt = list[i];

      c(elt, st);
    }
  };
  base.MethodDefinition = base.PropertyDefinition = base.Property = function (node, st, c) {
    if (node.computed) { c(node.key, st, "Expression"); }
    if (node.value) { c(node.value, st, "Expression"); }
  };

  exports.ancestor = ancestor;
  exports.base = base;
  exports.findNodeAfter = findNodeAfter;
  exports.findNodeAround = findNodeAround;
  exports.findNodeAt = findNodeAt;
  exports.findNodeBefore = findNodeBefore;
  exports.full = full;
  exports.fullAncestor = fullAncestor;
  exports.make = make;
  exports.recursive = recursive;
  exports.simple = simple;

}));
/* --------------------------------------------------------------
         js/libs/acorn/signal.js
   -------------------------------------------------------------- */
(function(root, mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    return mod(exports);
  if (typeof define == "function" && define.amd) // AMD
    return define(["exports"], mod);
  mod((root.tern || (root.tern = {})).signal = {}); // Plain browser env
})(this, function(exports) {

  function on(type, f) {
    var handlers = this._handlers || (this._handlers = Object.create(null));
    (handlers[type] || (handlers[type] = [])).push(f);
  }

  function off(type, f) {
    var arr = this._handlers && this._handlers[type];
    if (arr) for (var i = 0; i < arr.length; ++i)
      if (arr[i] == f) { arr.splice(i, 1); break; }
  }

  var noHandlers = [];
  function getHandlers(emitter, type) {
    var arr = emitter._handlers && emitter._handlers[type];
    return arr && arr.length ? arr.slice() : noHandlers;
  }

  function signal(type, a1, a2, a3, a4) {
    var arr = getHandlers(this, type);
    for (var i = 0; i < arr.length; ++i) arr[i].call(this, a1, a2, a3, a4);
  }

  function signalReturnFirst(type, a1, a2, a3, a4) {
    var arr = getHandlers(this, type);
    for (var i = 0; i < arr.length; ++i) {
      var result = arr[i].call(this, a1, a2, a3, a4);
      if (result) return result;
    }
  }

  function hasHandler(type) {
    var arr = this._handlers && this._handlers[type];
    return arr && arr.length > 0 && arr;
  }

  exports.mixin = function(obj) {
    obj.on = on; obj.off = off;
    obj.signal = signal;
    obj.signalReturnFirst = signalReturnFirst;
    obj.hasHandler = hasHandler;
    return obj;
  };
});
/* --------------------------------------------------------------
         js/libs/acorn/tern.js
   -------------------------------------------------------------- */
// The Tern server object

// A server is a stateful object that manages the analysis for a
// project, and defines an interface for querying the code in the
// project.

(function(root, mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    return mod(exports, require("./infer"), require("./signal"),
               require("acorn"), require("acorn-walk"));
  if (typeof define == "function" && define.amd) // AMD
    return define(["exports", "./infer", "./signal", "acorn/dist/acorn", "acorn-walk/dist/walk"], mod);
  mod(root.tern || (root.tern = {}), tern, tern.signal, acorn, acorn.walk); // Plain browser env
})(this, function(exports, infer, signal, acorn, walk) {
  "use strict";

  var plugins = Object.create(null);
  exports.registerPlugin = function(name, init) { plugins[name] = init; };

  var defaultOptions = exports.defaultOptions = {
    debug: false,
    async: false,
    getFile: function(_f, c) { if (this.async) c(null, null); },
    normalizeFilename: function(name) { return name },
    defs: [],
    plugins: {},
    fetchTimeout: 1000,
    dependencyBudget: 20000,
    reuseInstances: true,
    stripCRs: false,
    ecmaVersion: 9,
    projectDir: "/",
    parent: null
  };

  var queryTypes = {
    completions: {
      takesFile: true,
      run: findCompletions
    },
    properties: {
      run: findProperties
    },
    type: {
      takesFile: true,
      run: findTypeAt
    },
    documentation: {
      takesFile: true,
      run: findDocs
    },
    definition: {
      takesFile: true,
      run: findDef
    },
    refs: {
      takesFile: true,
      fullFile: true,
      run: findRefs
    },
    rename: {
      takesFile: true,
      fullFile: true,
      run: buildRename
    },
    files: {
      run: listFiles
    }
  };

  exports.defineQueryType = function(name, desc) { queryTypes[name] = desc; };

  function File(name, parent) {
    this.name = name;
    this.parent = parent;
    this.scope = this.text = this.ast = this.lineOffsets = null;
  }
  File.prototype.asLineChar = function(pos) { return asLineChar(this, pos); };

  function parseFile(srv, file) {
    var options = {
      directSourceFile: file,
      allowReturnOutsideFunction: true,
      allowImportExportEverywhere: true,
      ecmaVersion: srv.options.ecmaVersion,
      allowHashBang: true
    };
    var text = srv.signalReturnFirst("preParse", file.text, options) || file.text;
    var ast = infer.parse(text, options);
    srv.signal("postParse", ast, text);
    return ast;
  }

  var astral = /[\uD800-\uDBFF]/g;

  function updateText(file, text, srv) {
    file.text = srv.options.stripCRs ? text.replace(/\r\n/g, "\n") : text;
    file.hasAstral = astral.test(file.text);
    infer.withContext(srv.cx, function() {
      file.ast = parseFile(srv, file);
    });
    file.lineOffsets = null;
  }

  var Server = exports.Server = function(options) {
    this.cx = null;
    this.options = options || {};
    for (var o in defaultOptions) if (!options.hasOwnProperty(o))
      options[o] = defaultOptions[o];

    this.projectDir = options.projectDir.replace(/\\/g, "/");
    if (!/\/$/.test(this.projectDir)) this.projectDir += "/";

    this.parent = options.parent;
    this.handlers = Object.create(null);
    this.files = [];
    this.fileMap = Object.create(null);
    this.needsPurge = [];
    this.budgets = Object.create(null);
    this.uses = 0;
    this.pending = 0;
    this.asyncError = null;
    this.mod = {};

    this.defs = options.defs.slice(0);
    this.plugins = Object.create(null);
    for (var plugin in options.plugins) if (options.plugins.hasOwnProperty(plugin))
      this.loadPlugin(plugin, options.plugins[plugin]);

    this.reset();
  };
  Server.prototype = signal.mixin({
    addFile: function(name, /*optional*/ text, parent) {
      // Don't crash when sloppy plugins pass non-existent parent ids
      if (parent && !(parent in this.fileMap)) parent = null;
      if (!(name in this.fileMap))
        name = this.normalizeFilename(name);
      ensureFile(this, name, parent, text);
    },
    delFile: function(name) {
      var file = this.findFile(name);
      if (file) {
        this.needsPurge.push(file.name);
        for (var i = 0; i < this.files.length; i++) {
          if (this.files[i] == file) this.files.splice(i--, 1);
          else if (this.files[i].parent == name) this.files[i].parent = null;
        }
        delete this.fileMap[file.name];
      }
    },
    reset: function() {
      this.signal("reset");
      this.cx = new infer.Context(this.defs, this);
      this.uses = 0;
      this.budgets = Object.create(null);
      for (var i = 0; i < this.files.length; ++i) {
        var file = this.files[i];
        if (file.scope) {
          infer.clearScopes(file.ast);
          file.scope = null;
        }
      }
      this.signal("postReset");
    },

    request: function(doc, c) {
      var inv = invalidDoc(doc);
      if (inv) return c(inv);

      var self = this;
      doRequest(this, doc, function(err, data) {
        c(err, data);
        if (self.uses > 40) {
          self.reset();
          analyzeAll(self, null, function(){});
        }
      });
    },

    findFile: function(name) {
      return this.fileMap[this.normalizeFilename(name)];
    },

    flush: function(c) {
      var cx = this.cx;
      analyzeAll(this, null, function(err) {
        if (err) return c(err);
        infer.withContext(cx, c);
      });
    },

    startAsyncAction: function() {
      ++this.pending;
    },
    finishAsyncAction: function(err) {
      if (err) this.asyncError = err;
      if (--this.pending === 0) this.signal("everythingFetched");
    },

    addDefs: function(defs, toFront) {
      if (toFront) this.defs.unshift(defs);
      else this.defs.push(defs);

      if (this.cx) this.reset();
    },

    deleteDefs: function(name) {
      for (var i = 0; i < this.defs.length; i++) if (this.defs[i]["!name"] == name) {
        this.defs.splice(i, 1);
        if (this.cx) this.reset();
        return;
      }
    },

    loadPlugin: function(name, options) {
      if (arguments.length == 1) options = this.options.plugins[name] || true;
      if (name in this.plugins || !(name in plugins) || !options) return;
      this.plugins[name] = true;
      var init = plugins[name](this, options);

      // This is for backwards-compatibilty. Don't rely on it -- use addDef and on directly
      if (!init) return;
      if (init.defs) this.addDefs(init.defs, init.loadFirst);
      if (init.passes) for (var type in init.passes) if (init.passes.hasOwnProperty(type))
        this.on(type, init.passes[type]);
    },

    normalizeFilename: function(name) {
      var norm = this.options.normalizeFilename(name).replace(/\\/g, "/");
      if (norm.indexOf(this.projectDir) == 0) norm = norm.slice(this.projectDir.length);
      return norm;
    }
  });

  function doRequest(srv, doc, c) {
    if (doc.query && !queryTypes.hasOwnProperty(doc.query.type))
      return c("No query type '" + doc.query.type + "' defined");

    var query = doc.query;
    // Respond as soon as possible when this just uploads files
    if (!query) c(null, {});

    var files = doc.files || [];
    if (files.length) ++srv.uses;
    for (var i = 0; i < files.length; ++i) {
      var file = files[i];
      file.name = srv.normalizeFilename(file.name);
      if (file.type == "delete")
        srv.delFile(file.name);
      else
        ensureFile(srv, file.name, null, file.type == "full" ? file.text : null);
    }

    var timeBudget = typeof doc.timeout == "number" ? [doc.timeout] : null;
    if (!query) {
      analyzeAll(srv, timeBudget, function(){});
      return;
    }

    var queryType = queryTypes[query.type];
    if (queryType.takesFile) {
      if (typeof query.file != "string") return c(".query.file must be a string");
      if (!/^#/.test(query.file)) ensureFile(srv, query.file, null);
    }

    analyzeAll(srv, timeBudget, function(err) {
      if (err) return c(err);
      var file = queryType.takesFile && resolveFile(srv, files, query.file);
      if (queryType.fullFile && file.type == "part")
        return c("Can't run a " + query.type + " query on a file fragment");

      infer.resetGuessing();
      infer.withContext(srv.cx, function() {
        var result, run = function() { result = queryType.run(srv, query, file); };
        try {
          if (timeBudget) infer.withTimeout(timeBudget[0], run);
          else run();
        } catch (e) {
          if (srv.options.debug && e.name != "TernError") console.error(e.stack);
          return c(e);
        }
        c(null, result);
      });
    });
  }

  function analyzeFile(srv, file) {
    infer.withContext(srv.cx, function() {
      file.scope = srv.cx.topScope;
      srv.signal("beforeLoad", file);
      infer.analyze(file.ast, file.name, file.scope);
      srv.signal("afterLoad", file);
    });
    return file;
  }

  function ensureFile(srv, name, parent, text) {
    var known = srv.findFile(name);
    if (known) {
      if (text != null) {
        if (known.scope) {
          srv.needsPurge.push(name);
          infer.clearScopes(known.ast);
          known.scope = null;
        }
        updateText(known, text, srv);
      }
      if (parentDepth(srv, known.parent) > parentDepth(srv, parent)) {
        known.parent = parent;
        if (known.excluded) known.excluded = null;
      }
      return;
    }

    var file = new File(name, parent);
    srv.files.push(file);
    srv.fileMap[name] = file;
    if (text != null) {
      updateText(file, text, srv);
    } else if (srv.options.async) {
      srv.startAsyncAction();
      srv.options.getFile(name, function(err, text) {
        updateText(file, text || "", srv);
        srv.finishAsyncAction(err);
      });
    } else {
      updateText(file, srv.options.getFile(name) || "", srv);
    }
  }

  function fetchAll(srv, c) {
    var done = true, returned = false;
    srv.files.forEach(function(file) {
      if (file.text != null) return;
      if (srv.options.async) {
        done = false;
        srv.options.getFile(file.name, function(err, text) {
          if (err && !returned) { returned = true; return c(err); }
          updateText(file, text || "", srv);
          fetchAll(srv, c);
        });
      } else {
        try {
          updateText(file, srv.options.getFile(file.name) || "", srv);
        } catch (e) { return c(e); }
      }
    });
    if (done) c();
  }

  function waitOnFetch(srv, timeBudget, c) {
    var done = function() {
      srv.off("everythingFetched", done);
      clearTimeout(timeout);
      analyzeAll(srv, timeBudget, c);
    };
    srv.on("everythingFetched", done);
    var timeout = setTimeout(done, srv.options.fetchTimeout);
  }

  function analyzeAll(srv, timeBudget, c) {
    if (srv.pending) return waitOnFetch(srv, timeBudget, c);

    var e = srv.fetchError;
    if (e) { srv.fetchError = null; return c(e); }

    if (srv.needsPurge.length > 0) infer.withContext(srv.cx, function() {
      infer.purge(srv.needsPurge);
      srv.needsPurge.length = 0;
    });

    var done = true;
    // The second inner loop might add new files. The outer loop keeps
    // repeating both inner loops until all files have been looked at.
    for (var i = 0; i < srv.files.length;) {
      var toAnalyze = [];
      for (; i < srv.files.length; ++i) {
        var file = srv.files[i];
        if (file.text == null) done = false;
        else if (file.scope == null && !file.excluded) toAnalyze.push(file);
      }
      toAnalyze.sort(function(a, b) {
        return parentDepth(srv, a.parent) - parentDepth(srv, b.parent);
      });
      for (var j = 0; j < toAnalyze.length; j++) {
        var file = toAnalyze[j];
        if (file.parent && !chargeOnBudget(srv, file)) {
          file.excluded = true;
        } else if (timeBudget) {
          var startTime = +new Date;
          try {
            infer.withTimeout(timeBudget[0], function() { analyzeFile(srv, file); });
          } catch(e) {
            if (e instanceof infer.TimedOut) return c(e);
            else throw e;
          }
          timeBudget[0] -= +new Date - startTime;
        } else {
          analyzeFile(srv, file);
        }
      }
    }
    if (done) c();
    else waitOnFetch(srv, timeBudget, c);
  }

  function firstLine(str) {
    var end = str.indexOf("\n");
    if (end < 0) return str;
    return str.slice(0, end);
  }

  function findMatchingPosition(line, file, near) {
    var pos = Math.max(0, near - 500), closest = null;
    if (!/^\s*$/.test(line)) for (;;) {
      var found = file.indexOf(line, pos);
      if (found < 0 || found > near + 500) break;
      if (closest == null || Math.abs(closest - near) > Math.abs(found - near))
        closest = found;
      pos = found + line.length;
    }
    return closest;
  }

  function scopeDepth(s) {
    for (var i = 0; s; ++i, s = s.prev) {}
    return i;
  }

  function ternError(msg) {
    var err = new Error(msg);
    err.name = "TernError";
    return err;
  }

  function resolveFile(srv, localFiles, name) {
    var isRef = name.match(/^#(\d+)$/);
    if (!isRef) return srv.findFile(name);

    var file = localFiles[isRef[1]];
    if (!file || file.type == "delete") throw ternError("Reference to unknown file " + name);
    if (file.type == "full") return srv.fileMap[file.name];

    // This is a partial file

    var realFile = file.backing = srv.fileMap[file.name];
    var offset = resolvePos(realFile, file.offsetLines == null ? file.offset : {line: file.offsetLines, ch: 0}, true);
    var line = firstLine(file.text);
    var foundPos = findMatchingPosition(line, realFile.text, offset);
    var pos = foundPos == null ? Math.max(0, realFile.text.lastIndexOf("\n", offset)) : foundPos;
    var inObject, atFunction;

    infer.withContext(srv.cx, function() {
      infer.purge(file.name, pos, pos + file.text.length);

      var text = file.text, m;
      if (m = text.match(/(?:"([^"]*)"|([\w$]+))\s*:\s*function\b/)) {
        var objNode = walk.findNodeAround(file.backing.ast, pos, "ObjectExpression");
        if (objNode && objNode.node.objType)
          inObject = {type: objNode.node.objType, prop: m[2] || m[1]};
      }
      if (foundPos && (m = line.match(/^(.*?)\bfunction\b/))) {
        var cut = m[1].length, white = "";
        for (var i = 0; i < cut; ++i) white += " ";
        file.text = white + text.slice(cut);
        atFunction = true;
      }

      var scopeStart = infer.scopeAt(realFile.ast, pos, realFile.scope);
      var scopeEnd = infer.scopeAt(realFile.ast, pos + text.length, realFile.scope);
      var scope = file.scope = scopeDepth(scopeStart) < scopeDepth(scopeEnd) ? scopeEnd : scopeStart;
      file.ast = parseFile(srv, file);
      infer.analyze(file.ast, file.name, scope);

      // This is a kludge to tie together the function types (if any)
      // outside and inside of the fragment, so that arguments and
      // return values have some information known about them.
      tieTogether: {
        if (inObject || atFunction) {
          var newInner = infer.scopeAt(file.ast, line.length, scopeStart);
          if (!newInner.fnType) break tieTogether;
          if (inObject) {
            var prop = inObject.type.getProp(inObject.prop);
            prop.addType(newInner.fnType);
          } else if (atFunction) {
            var inner = infer.scopeAt(realFile.ast, pos + line.length, realFile.scope);
            if (inner == scopeStart || !inner.fnType) break tieTogether;
            var fOld = inner.fnType, fNew = newInner.fnType;
            if (!fNew || (fNew.name != fOld.name && fOld.name)) break tieTogether;
            for (var i = 0, e = Math.min(fOld.args.length, fNew.args.length); i < e; ++i)
              fOld.args[i].propagate(fNew.args[i]);
            fOld.self.propagate(fNew.self);
            fNew.retval.propagate(fOld.retval);
          }
        }
      }
    });
    return file;
  }

  // Budget management

  function astSize(node) {
    var size = 0;
    walk.simple(node, {Expression: function() { ++size; }});
    return size;
  }

  function parentDepth(srv, parent) {
    var depth = 0;
    while (parent) {
      parent = srv.fileMap[parent].parent;
      ++depth;
    }
    return depth;
  }

  function budgetName(srv, file) {
    for (;;) {
      var parent = srv.fileMap[file.parent];
      if (!parent.parent) break;
      file = parent;
    }
    return file.name;
  }

  function chargeOnBudget(srv, file) {
    var bName = budgetName(srv, file);
    var size = astSize(file.ast);
    var known = srv.budgets[bName];
    if (known == null)
      known = srv.budgets[bName] = srv.options.dependencyBudget;
    if (known < size) return false;
    srv.budgets[bName] = known - size;
    return true;
  }

  // Query helpers

  function isPosition(val) {
    return typeof val == "number" || typeof val == "object" &&
      typeof val.line == "number" && typeof val.ch == "number";
  }

  // Baseline query document validation
  function invalidDoc(doc) {
    if (doc.query) {
      if (typeof doc.query.type != "string") return ".query.type must be a string";
      if (doc.query.start && !isPosition(doc.query.start)) return ".query.start must be a position";
      if (doc.query.end && !isPosition(doc.query.end)) return ".query.end must be a position";
    }
    if (doc.files) {
      if (!Array.isArray(doc.files)) return "Files property must be an array";
      for (var i = 0; i < doc.files.length; ++i) {
        var file = doc.files[i];
        if (typeof file != "object") return ".files[n] must be objects";
        else if (typeof file.name != "string") return ".files[n].name must be a string";
        else if (file.type == "delete") continue;
        else if (typeof file.text != "string") return ".files[n].text must be a string";
        else if (file.type == "part") {
          if (!isPosition(file.offset) && typeof file.offsetLines != "number")
            return ".files[n].offset must be a position";
        } else if (file.type != "full") return ".files[n].type must be \"full\" or \"part\"";
      }
    }
  }

  var offsetSkipLines = 25;

  function forwardCharacters(file, start, chars) {
    var pos = start + chars, m;
    if (file.hasAstral) {
      astral.lastIndex = start;
      while ((m = astral.exec(file.text)) && m.index < pos) pos++;
    }
    return pos;
  }

  function findLineStart(file, line) {
    var text = file.text, offsets = file.lineOffsets || (file.lineOffsets = [0]);
    var pos = 0, curLine = 0;
    var storePos = Math.min(Math.floor(line / offsetSkipLines), offsets.length - 1);
    var pos = offsets[storePos], curLine = storePos * offsetSkipLines;

    while (curLine < line) {
      ++curLine;
      pos = text.indexOf("\n", pos) + 1;
      if (pos === 0) return null;
      if (curLine % offsetSkipLines === 0) offsets.push(pos);
    }
    return pos;
  }

  var resolvePos = exports.resolvePos = function(file, pos, tolerant) {
    if (typeof pos != "number") {
      var lineStart = findLineStart(file, pos.line);
      if (lineStart == null) {
        if (tolerant) pos = file.text.length;
        else throw ternError("File doesn't contain a line " + pos.line);
      } else {
        pos = forwardCharacters(file, lineStart, pos.ch);
      }
    } else {
      pos = forwardCharacters(file, 0, pos);
    }
    if (pos > file.text.length) {
      if (tolerant) pos = file.text.length;
      else throw ternError("Position " + pos + " is outside of file.");
    }
    return pos;
  };

  function charDistanceBetween(file, start, end) {
    var diff = end - start, m;
    if (file.hasAstral) {
      astral.lastIndex = start;
      while ((m = astral.exec(file.text)) && m.index < end) diff--;
    }
    return diff;
  }

  function asLineChar(file, pos) {
    if (!file) return {line: 0, ch: 0};
    var offsets = file.lineOffsets || (file.lineOffsets = [0]);
    var text = file.text, line, lineStart;
    for (var i = offsets.length - 1; i >= 0; --i) if (offsets[i] <= pos) {
      line = i * offsetSkipLines;
      lineStart = offsets[i];
    }
    for (;;) {
      var eol = text.indexOf("\n", lineStart);
      if (eol >= pos || eol < 0) break;
      lineStart = eol + 1;
      ++line;
    }
    return {line: line, ch: charDistanceBetween(file, lineStart, pos)};
  }

  var outputPos = exports.outputPos = function(query, file, pos) {
    if (query.lineCharPositions) {
      var out = asLineChar(file, pos);
      if (file.type == "part")
        out.line += file.offsetLines != null ? file.offsetLines : asLineChar(file.backing, file.offset).line;
      return out;
    } else {
      return charDistanceBetween(file, 0, pos) + (file.type == "part" ? file.offset : 0);
    }
  };

  // Delete empty fields from result objects
  function clean(obj) {
    for (var prop in obj) if (obj[prop] == null) delete obj[prop];
    return obj;
  }
  function maybeSet(obj, prop, val) {
    if (val != null) obj[prop] = val;
  }

  // Built-in query types

  function compareCompletions(a, b) {
    if (typeof a != "string") { a = a.name; b = b.name; }
    var aUp = /^[A-Z]/.test(a), bUp = /^[A-Z]/.test(b);
    if (aUp == bUp) return a < b ? -1 : a == b ? 0 : 1;
    else return aUp ? 1 : -1;
  }

  function isStringAround(node, start, end) {
    return node.type == "Literal" && typeof node.value == "string" &&
      node.start == start - 1 && node.end <= end + 1;
  }

  function pointInProp(objNode, point) {
    for (var i = 0; i < objNode.properties.length; i++) {
      var curProp = objNode.properties[i];
      if (curProp.key && curProp.key.start <= point && curProp.key.end >= point)
        return curProp;
    }
  }

  var jsKeywords = ("break do instanceof typeof case else new var " +
    "catch finally return void continue for switch while debugger " +
    "function this with default if throw delete in try").split(" ");
  var jsKeywordsES6 = jsKeywords.concat("export class extends const super yield import let static".split(" "));

  var addCompletion = exports.addCompletion = function(query, completions, name, aval, depth) {
    var typeInfo = query.types || query.docs || query.urls || query.origins;
    var wrapAsObjs = typeInfo || query.depths;

    for (var i = 0; i < completions.length; ++i) {
      var c = completions[i];
      if ((wrapAsObjs ? c.name : c) == name) return;
    }
    var rec = wrapAsObjs ? {name: name} : name;
    completions.push(rec);

    if (aval && typeInfo) {
      infer.resetGuessing();
      var type = aval.getType();
      rec.guess = infer.didGuess();
      if (query.types)
        rec.type = infer.toString(aval);
      if (query.docs)
        maybeSet(rec, "doc", parseDoc(query, aval.doc || type && type.doc));
      if (query.urls)
        maybeSet(rec, "url", aval.url || type && type.url);
      if (query.origins)
        maybeSet(rec, "origin", aval.origin || type && type.origin);
    }
    if (query.depths) rec.depth = depth || 0;
    return rec;
  };

  function findCompletions(srv, query, file) {
    if (query.end == null) throw ternError("missing .query.end field");
    var fromPlugin = srv.signalReturnFirst("completion", file, query);
    if (fromPlugin) return fromPlugin;

    var wordStart = resolvePos(file, query.end), wordEnd = wordStart, text = file.text;
    while (wordStart && acorn.isIdentifierChar(text.charCodeAt(wordStart - 1))) --wordStart;
    if (query.expandWordForward !== false)
      while (wordEnd < text.length && acorn.isIdentifierChar(text.charCodeAt(wordEnd))) ++wordEnd;
    var word = text.slice(wordStart, wordEnd), completions = [], ignoreObj;
    if (query.caseInsensitive) word = word.toLowerCase();

    function gather(prop, obj, depth, addInfo) {
      // 'hasOwnProperty' and such are usually just noise, leave them
      // out when no prefix is provided.
      if ((objLit || query.omitObjectPrototype !== false) && obj == srv.cx.protos.Object && !word) return;
      if (query.filter !== false && word &&
          (query.caseInsensitive ? prop.toLowerCase() : prop).indexOf(word) !== 0) return;
      if (ignoreObj && ignoreObj.props[prop]) return;
      var result = addCompletion(query, completions, prop, obj && obj.props[prop], depth);
      if (addInfo && result && typeof result != "string") addInfo(result);
    }

    var hookname, prop, objType, isKey;

    var exprAt = infer.findExpressionAround(file.ast, null, wordStart, file.scope);
    var memberExpr, objLit;
    // Decide whether this is an object property, either in a member
    // expression or an object literal.
    if (exprAt) {
      var exprNode = exprAt.node;

      if (query.inLiteral === false && exprNode.type === "Literal" &&
          (typeof exprNode.value === 'string' || exprNode.regex))
        return {
          start: outputPos(query, file, wordStart),
          end: outputPos(query, file, wordEnd),
          completions: []
        };

      if (exprNode.type == "MemberExpression" && exprNode.object.end < wordStart) {
        memberExpr = exprAt;
      } else if (isStringAround(exprNode, wordStart, wordEnd)) {
        var parent = infer.parentNode(exprNode, file.ast);
        if (parent.type == "MemberExpression" && parent.property == exprNode)
          memberExpr = {node: parent, state: exprAt.state};
      } else if (exprNode.type == "ObjectExpression") {
        var objProp = pointInProp(exprNode, wordEnd);
        if (objProp) {
          objLit = exprAt;
          prop = isKey = objProp.key.name || objProp.key.value;
        } else if (!word && !/:\s*$/.test(file.text.slice(0, wordStart))) {
          objLit = exprAt;
          prop = isKey = true;
        }
      }
    }

    if (objLit) {
      // Since we can't use the type of the literal itself to complete
      // its properties (it doesn't contain the information we need),
      // we have to try asking the surrounding expression for type info.
      objType = infer.typeFromContext(file.ast, objLit);
      ignoreObj = objLit.node.objType;
    } else if (memberExpr) {
      prop = memberExpr.node.property;
      prop = prop.type == "Literal" ? prop.value.slice(1) : prop.name;
      memberExpr.node = memberExpr.node.object;
      objType = infer.expressionType(memberExpr);
    } else if (text.charAt(wordStart - 1) == ".") {
      var pathStart = wordStart - 1;
      while (pathStart && (text.charAt(pathStart - 1) == "." || acorn.isIdentifierChar(text.charCodeAt(pathStart - 1)))) pathStart--;
      var path = text.slice(pathStart, wordStart - 1);
      if (path) {
        objType = infer.def.parsePath(path, file.scope).getObjType();
        prop = word;
      }
    }

    if (prop != null) {
      srv.cx.completingProperty = prop;

      if (objType) infer.forAllPropertiesOf(objType, gather);

      if (!completions.length && query.guess !== false && objType && objType.guessProperties)
        objType.guessProperties(function(p, o, d) {if (p != prop && p != "✖" && p != "<i>") gather(p, o, d);});
      if (!completions.length && word.length >= 2 && query.guess !== false)
        for (var prop in srv.cx.props) gather(prop, srv.cx.props[prop][0], 0);
      hookname = "memberCompletion";
    } else {
      infer.forAllLocalsAt(file.ast, wordStart, file.scope, gather);
      if (query.includeKeywords) {
        (srv.options.ecmaVersion >= 6 ? jsKeywordsES6 : jsKeywords).forEach(function(kw) {
          gather(kw, null, 0, function(rec) { rec.isKeyword = true; });
        });
      }
      hookname = "variableCompletion";
    }
    srv.signal(hookname, file, wordStart, wordEnd, gather);

    if (query.sort !== false) completions.sort(compareCompletions);
    srv.cx.completingProperty = null;

    return {start: outputPos(query, file, wordStart),
            end: outputPos(query, file, wordEnd),
            isProperty: !!prop,
            isObjectKey: !!isKey,
            completions: completions};
  }

  function findProperties(srv, query) {
    var prefix = query.prefix, found = [];
    for (var prop in srv.cx.props)
      if (prop != "<i>" && (!prefix || prop.indexOf(prefix) === 0)) found.push(prop);
    if (query.sort !== false) found.sort(compareCompletions);
    return {completions: found};
  }

  function inBody(node, pos) {
    var body = node.body, start, end;
    if (!body) return false;
    if (Array.isArray(body)) {
      start = body[0].start;
      end = body[body.length - 1].end;
    } else {
      start = body.start;
      end = body.end;
    }
    return start <= pos && end >= pos;
  }

  var findExpr = exports.findQueryExpr = function(file, query, wide) {
    if (query.end == null) throw ternError("missing .query.end field");

    if (query.variable) {
      var scope = infer.scopeAt(file.ast, resolvePos(file, query.end), file.scope);
      return {node: {type: "Identifier", name: query.variable, start: query.end, end: query.end + 1},
              state: scope};
    } else {
      var start = query.start && resolvePos(file, query.start), end = resolvePos(file, query.end);
      var expr = infer.findExpressionAt(file.ast, start, end, file.scope);
      if (!expr) {
        var span = infer.findClosestExpression(file.ast, start, end, file.scope);
        if (span && !inBody(span.node, end) &&
            (wide || (start == null ? end : start) - span.node.start < 20 || span.node.end - end < 20))
          expr = span;
      }
      if (!expr) {
        var around = infer.findExpressionAround(file.ast, start, end, file.scope);
        if (around && !inBody(around.node, end) &&
            (around.node.type == "ObjectExpression" || wide ||
             (start == null ? end : start) - around.node.start < 20 || around.node.end - end < 20))
          expr = around;
      }
      return expr;
    }
  };

  function findExprAround(file, query, wide) {
    var start = query.start && resolvePos(file, query.start), end = resolvePos(file, query.end);
    var expr = null;
    var around = infer.findExpressionAround(file.ast, start, end, file.scope);
    if (around && !inBody(around.node, end) &&
        (around.node.type == "ObjectExpression" || wide ||
         (start == null ? end : start) - around.node.start < 20 || around.node.end - end < 20))
      expr = around;
    return expr;
  }

  function findExprOrThrow(file, query, wide) {
    var expr = findExpr(file, query, wide);
    if (expr) return expr;
    throw ternError("No expression at the given position.");
  }

  function ensureObj(tp) {
    if (!tp || !(tp = tp.getType()) || !(tp instanceof infer.Obj)) return null;
    return tp;
  }

  function findExprType(srv, query, file, expr) {
    var type;
    if (expr) {
      infer.resetGuessing();
      type = infer.expressionType(expr);
    }
    var typeHandlers = srv.hasHandler("typeAt");
    if (typeHandlers) {
      var pos = resolvePos(file, query.end);
      for (var i = 0; i < typeHandlers.length; i++)
        type = typeHandlers[i](file, pos, expr, type);
    }
    if (!type) throw ternError("No type found at the given position.");

    var objProp;
    if (expr.node.type == "ObjectExpression" && query.end != null &&
        (objProp = pointInProp(expr.node, resolvePos(file, query.end)))) {
      var name = objProp.key.name;
      var fromCx = ensureObj(infer.typeFromContext(file.ast, expr));
      if (fromCx && fromCx.hasProp(name)) {
        type = fromCx.hasProp(name);
      } else {
        var fromLocal = ensureObj(type);
        if (fromLocal && fromLocal.hasProp(name))
          type = fromLocal.hasProp(name);
      }
    }
    return type;
  }

  function findTypeAtExpr(srv, query, file, expr) {
    var exprName, exprType;
    var type = findExprType(srv, query, file, expr), exprType = type;
    if (query.preferFunction)
      type = type.getFunctionType() || type.getType();
    else
      type = type.getType();

    if (expr) {
      if (expr.node.type == "Identifier")
        exprName = expr.node.name;
      else if (expr.node.type == "MemberExpression" && !expr.node.computed)
        exprName = expr.node.property.name;
      else if (expr.node.type == "MethodDefinition" && !expr.node.computed)
        exprName = expr.node.key.name;
    }

    if (query.depth != null && typeof query.depth != "number")
      throw ternError(".query.depth must be a number");

    return [type, exprName, exprType];
  }

  function findTypeAt(srv, query, file) {
    var type, exprName, exprType;
    var expr = findExpr(file, query);
    var typeResult = findTypeAtExpr(srv, query, file, expr);
    type = typeResult[0];
    if (!type) {
      expr = findExprAround(file, query);
      typeResult = findTypeAtExpr(srv, query, file, expr);
      type = typeResult[0];
    }
    exprName = typeResult[1];
    exprType = typeResult[2];

    var result = {guess: infer.didGuess(),
                  type: infer.toString(exprType, query.depth),
                  name: type && type.name,
                  exprName: exprName,
                  doc: exprType.doc,
                  url: exprType.url};
    if (type) storeTypeDocs(query, type, result);

    return clean(result);
  }

  function parseDoc(query, doc) {
    if (!doc) return null;
    if (query.docFormat == "full") return doc;
    var parabreak = /.\n[\s@\n]/.exec(doc);
    if (parabreak) doc = doc.slice(0, parabreak.index + 1);
    doc = doc.replace(/\n\s*/g, " ");
    if (doc.length < 100) return doc;
    var sentenceEnd = /[\.!?] [A-Z]/g;
    sentenceEnd.lastIndex = 80;
    var found = sentenceEnd.exec(doc);
    if (found) doc = doc.slice(0, found.index + 1);
    return doc;
  }

  function findDocs(srv, query, file) {
    var expr = findExpr(file, query);
    var type = findExprType(srv, query, file, expr);
    var inner = type.getType();
    if (!inner) {
      expr = findExprAround(file, query);
      type = findExprType(srv, query, file, expr);
      inner = type.getType();
    }
    var result = {url: type.url, doc: parseDoc(query, type.doc), type: infer.toString(type)};
    if (inner) storeTypeDocs(query, inner, result);
    return clean(result);
  }

  function storeTypeDocs(query, type, out) {
    if (!out.url) out.url = type.url;
    if (!out.doc) out.doc = parseDoc(query, type.doc);
    if (!out.origin) out.origin = type.origin;
    var ctor, boring = infer.cx().protos;
    if (!out.url && !out.doc && type.proto && (ctor = type.proto.hasCtor) &&
        type.proto != boring.Object && type.proto != boring.Function && type.proto != boring.Array) {
      out.url = ctor.url;
      out.doc = parseDoc(query, ctor.doc);
    }
  }

  var getSpan = exports.getSpan = function(obj) {
    if (!obj.origin) return;
    if (obj.originNode) {
      var node = obj.originNode;
      if (/^Function/.test(node.type) && node.id) node = node.id;
      return {origin: obj.origin, node: node};
    }
    if (obj.span) return {origin: obj.origin, span: obj.span};
  };

  var storeSpan = exports.storeSpan = function(srv, query, span, target) {
    target.origin = span.origin;
    if (span.span) {
      var m = /^(\d+)\[(\d+):(\d+)\]-(\d+)\[(\d+):(\d+)\]$/.exec(span.span);
      target.start = query.lineCharPositions ? {line: Number(m[2]), ch: Number(m[3])} : Number(m[1]);
      target.end = query.lineCharPositions ? {line: Number(m[5]), ch: Number(m[6])} : Number(m[4]);
    } else {
      var file = srv.fileMap[span.origin];
      target.start = outputPos(query, file, span.node.start);
      target.end = outputPos(query, file, span.node.end);
    }
  };

  function findDef(srv, query, file) {
    var expr = findExpr(file, query);
    var type = findExprType(srv, query, file, expr);
    if (infer.didGuess()) return {};

    var span = getSpan(type);
    var result = {url: type.url, doc: parseDoc(query, type.doc), origin: type.origin};

    if (type.types) for (var i = type.types.length - 1; i >= 0; --i) {
      var tp = type.types[i];
      storeTypeDocs(query, tp, result);
      if (!span) span = getSpan(tp);
    }

    if (span && span.node) { // refers to a loaded file
      var spanFile = span.node.sourceFile || srv.fileMap[span.origin];
      var start = outputPos(query, spanFile, span.node.start), end = outputPos(query, spanFile, span.node.end);
      result.start = start; result.end = end;
      result.file = span.origin;
      var cxStart = Math.max(0, span.node.start - 50);
      result.contextOffset = span.node.start - cxStart;
      result.context = spanFile.text.slice(cxStart, cxStart + 50);
    } else if (span) { // external
      result.file = span.origin;
      storeSpan(srv, query, span, result);
    }
    return clean(result);
  }

  function findRefsToVariable(srv, query, file, expr, isRename) {
    var name = expr.node.name;

    for (var scope = expr.state; scope && !(name in scope.props); scope = scope.prev) {}
    if (!scope) throw ternError("Could not find a definition for " + name);

    var type, refs = [];
    function storeRef(file) {
      return function(node, scopeHere, ancestors) {
        var value = {file: file.name,
                     start: outputPos(query, file, node.start),
                     end: outputPos(query, file, node.end)};
        if (isRename) {
          for (var s = scopeHere; s != scope; s = s.prev) {
            var exists = s.hasProp(isRename);
            if (exists)
              throw ternError("Renaming `" + name + "` to `" + isRename + "` would make a variable at line " +
                              (asLineChar(file, node.start).line + 1) + " point to the definition at line " +
                              (asLineChar(file, exists.name.start).line + 1));
          }
          var parent = ancestors[ancestors.length - 2];
          if (parent && parent.type == "Property" && parent.key == parent.value)
            value.isShorthand = true;
        }
        refs.push(value);
      };
    }

    if (scope.originNode) {
      type = "local";
      if (isRename) {
        for (var prev = scope.prev; prev; prev = prev.prev)
          if (isRename in prev.props) break;
        if (prev) infer.findRefs(scope.originNode, scope, isRename, prev, function(node) {
          throw ternError("Renaming `" + name + "` to `" + isRename + "` would shadow the definition used at line " +
                          (asLineChar(file, node.start).line + 1));
        });
      }
      infer.findRefs(scope.originNode, scope, name, scope, storeRef(file));
    } else {
      type = "global";
      if (query.onlySourceFile) {
        infer.findRefs(file.ast, file.scope, name, scope, storeRef(file));
      } else {
        for (var i = 0; i < srv.files.length; ++i) {
          var cur = srv.files[i];
          infer.findRefs(cur.ast, cur.scope, name, scope, storeRef(cur));
        }
      }
    }

    return {refs: refs, type: type, name: name};
  }

  function findRefsToProperty(srv, query, sourceFile, expr, prop) {
    var exprType = infer.expressionType(expr);
    if (expr.node.type == "MethodDefinition") {
      exprType = exprType.propertyOf;
    }
    var objType = exprType.getObjType();
    if (!objType) throw ternError("Couldn't determine type of base object.");

    var refs = [];
    function storeRef(file) {
      return function(node) {
        refs.push({file: file.name,
                   start: outputPos(query, file, node.start),
                   end: outputPos(query, file, node.end)});
      };
    }

    if (query.onlySourceFile) {
        infer.findPropRefs(sourceFile.ast, sourceFile.scope, objType, prop.name, storeRef(sourceFile));
    } else {
      for (var i = 0; i < srv.files.length; ++i) {
        var cur = srv.files[i];
        infer.findPropRefs(cur.ast, cur.scope, objType, prop.name, storeRef(cur));
      }
    }

    return {refs: refs, name: prop.name};
  }

  function findRefs(srv, query, file) {
    var expr = findExprOrThrow(file, query, true);
    if (expr && expr.node.type == "Identifier") {
      return findRefsToVariable(srv, query, file, expr);
    } else if (expr && expr.node.type == "MemberExpression" && !expr.node.computed) {
      var p = expr.node.property;
      expr.node = expr.node.object;
      return findRefsToProperty(srv, query, file, expr, p);
    } else if (expr && expr.node.type == "ObjectExpression") {
      var pos = resolvePos(file, query.end);
      for (var i = 0; i < expr.node.properties.length; ++i) {
        var k = expr.node.properties[i].key;
        if (k.start <= pos && k.end >= pos)
          return findRefsToProperty(srv, query, file, expr, k);
      }
    } else if (expr && expr.node.type == "MethodDefinition") {
      var p = expr.node.key;
      return findRefsToProperty(srv, query, file, expr, p);
    }
    throw ternError("Not at a variable or property name.");
  }

  function buildRename(srv, query, file) {
    if (typeof query.newName != "string") throw ternError(".query.newName should be a string");
    var expr = findExprOrThrow(file, query);
    if (!expr || expr.node.type != "Identifier") throw ternError("Not at a variable.");

    var data = findRefsToVariable(srv, query, file, expr, query.newName), refs = data.refs;
    delete data.refs;
    data.files = srv.files.map(function(f){return f.name;});

    var changes = data.changes = [];
    for (var i = 0; i < refs.length; ++i) {
      var use = refs[i];
      if (use.isShorthand) use.text = expr.node.name + ": " + query.newName;
      else use.text = query.newName;
      changes.push(use);
    }

    return data;
  }

  function listFiles(srv) {
    return {files: srv.files.map(function(f){return f.name;})};
  }

  exports.version = "0.24.3";
});
/* --------------------------------------------------------------
         js/libs/acorn/def.js
   -------------------------------------------------------------- */
// Type description parser
//
// Type description JSON files (such as ecmascript.json and browser.json)
// are used to
//
// A) describe types that come from native code
//
// B) to cheaply load the types for big libraries, or libraries that
//    can't be inferred well

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    return exports.init = mod;
  if (typeof define == "function" && define.amd) // AMD
    return define({init: mod});
  tern.def = {init: mod};
})(function(exports, infer) {
  "use strict";

  function hop(obj, prop) {
    return Object.prototype.hasOwnProperty.call(obj, prop);
  }

  var TypeParser = exports.TypeParser = function(spec, start, base, forceNew) {
    this.pos = start || 0;
    this.spec = spec;
    this.base = base;
    this.forceNew = forceNew;
  };

  function unwrapType(type, self, args) {
    return type.call ? type(self, args) : type;
  }

  function extractProp(type, prop) {
    if (prop == "!ret") {
      if (type.retval) return type.retval;
      var rv = new infer.AVal;
      type.propagate(new infer.IsCallee(infer.ANull, [], null, rv));
      return rv;
    } else {
      return type.getProp(prop);
    }
  }

  function computedFunc(name, args, retType, generator) {
    return function(self, cArgs) {
      var realArgs = [];
      for (var i = 0; i < args.length; i++) realArgs.push(unwrapType(args[i], self, cArgs));
      return new infer.Fn(name, infer.ANull, realArgs, unwrapType(retType, self, cArgs), generator);
    };
  }
  function computedUnion(types) {
    return function(self, args) {
      var union = new infer.AVal;
      for (var i = 0; i < types.length; i++) unwrapType(types[i], self, args).propagate(union);
      union.maxWeight = 1e5;
      return union;
    };
  }
  function computedArray(inner) {
    return function(self, args) {
      return new infer.Arr(inner(self, args));
    };
  }
  function computedTuple(types) {
    return function(self, args) {
      return new infer.Arr(types.map(function(tp) { return unwrapType(tp, self, args) }));
    };
  }
  function computedObject(names, types) {
    return function(self, args) {
      var obj = new infer.Obj;
      names.forEach(function (prop, i) {
        obj.defProp(prop).addType(unwrapType(types[i], self, args));
      });
      return obj;
    };
  }

  TypeParser.prototype = {
    eat: function(str) {
      if (str.length == 1 ? this.spec.charAt(this.pos) == str : this.spec.indexOf(str, this.pos) == this.pos) {
        this.pos += str.length;
        return true;
      }
    },
    word: function(re) {
      var word = "", ch, re = re || /[\w$]/;
      while ((ch = this.spec.charAt(this.pos)) && re.test(ch)) { word += ch; ++this.pos; }
      return word;
    },
    error: function() {
      throw new Error("Unrecognized type spec: " + this.spec + " (at " + this.pos + ")");
    },
    parseFnType: function(comp, name, top, generator) {
      var args = [], names = [], computed = false;
      if (!this.eat(")")) for (var i = 0; ; ++i) {
        var colon = this.spec.indexOf(": ", this.pos), argname;
        if (colon != -1) {
          argname = this.spec.slice(this.pos, colon);
          if (/^(\.\.\.)?[$\w?]+$/.test(argname))
            this.pos = colon + 2;
          else
            argname = null;
        }
        names.push(argname);
        var argType = this.parseType(comp);
        if (argType.call) computed = true;
        args.push(argType);
        if (!this.eat(", ")) {
          this.eat(")") || this.error();
          break;
        }
      }
      var retType, computeRet, computeRetStart, fn;
      if (this.eat(" -> ")) {
        var retStart = this.pos;
        retType = this.parseType(true);
        if (retType.call && !computed) {
          computeRet = retType;
          retType = infer.ANull;
          computeRetStart = retStart;
        }
      } else {
        retType = infer.ANull;
      }
      if (computed) return computedFunc(name, args, retType, generator);

      if (top && (fn = this.base))
        infer.Fn.call(this.base, name, infer.ANull, args, names, retType, generator);
      else
        fn = new infer.Fn(name, infer.ANull, args, names, retType, generator);
      if (computeRet) fn.computeRet = computeRet;
      if (computeRetStart != null) fn.computeRetSource = this.spec.slice(computeRetStart, this.pos);
      return fn;
    },
    parseType: function(comp, name, top) {
      var main = this.parseTypeMaybeProp(comp, name, top);
      if (!this.eat("|")) return main;
      var types = [main], computed = main.call;
      for (;;) {
        var next = this.parseTypeMaybeProp(comp, name, top);
        types.push(next);
        if (next.call) computed = true;
        if (!this.eat("|")) break;
      }
      if (computed) return computedUnion(types);
      var union = new infer.AVal;
      for (var i = 0; i < types.length; i++) types[i].propagate(union);
      union.maxWeight = 1e5;
      return union;
    },
    parseTypeMaybeProp: function(comp, name, top) {
      var result = this.parseTypeInner(comp, name, top);
      while (comp && this.eat(".")) result = this.extendWithProp(result);
      return result;
    },
    extendWithProp: function(base) {
      var propName = this.word(/[\w<>$!:]/) || this.error();
      if (base.apply) return function(self, args) {
        return extractProp(base(self, args), propName);
      };
      return extractProp(base, propName);
    },
    parseTypeInner: function(comp, name, top) {
      var gen;
      if (this.eat("fn(") || (gen = this.eat("fn*("))) {
        return this.parseFnType(comp, name, top, gen);
      } else if (this.eat("[")) {
        var inner = this.parseType(comp), types, computed = inner.call;
        while (this.eat(", ")) {
          if (!types) types = [inner];
          var next = this.parseType(comp);
          types.push(next);
          computed = computed || next.call;
        }
        this.eat("]") || this.error();
        if (computed) return types ? computedTuple(types) : computedArray(inner);
        if (top && this.base) {
          infer.Arr.call(this.base, types || inner);
          return this.base;
        }
        return new infer.Arr(types || inner);
      } else if (this.eat("{")) {
        var types = [], names = [], computed = false;
        if (!this.eat("}")) {
          for (var i = 0; ; ++i) {
            var colon = this.spec.indexOf(": ", this.pos), propName;
            if (colon != -1) {
              propName = this.spec.slice(this.pos, colon);
              if (/^[$\w?]+$/.test(propName))
                this.pos = colon + 2;
              else
                propName = null;
            }
            var propType = this.parseType(comp);
            if (propType.call) computed = true;
            names.push(propName);
            types.push(propType);
            if (!this.eat(", ")) {
              this.eat("}") || this.error();
              break;
            }
          }
        }
        if (computed) return computedObject(names, types);
        var obj = new infer.Obj;
        names.forEach(function (prop, i) {
          obj.defProp(prop).addType(types[i]);
        });
        return obj;
      } else if (this.eat("+")) {
        var path = this.word(/[\w$<>\.:!]/);
        var base = infer.cx().localDefs[path + ".prototype"];
        if (!base) {
          var base = parsePath(path);
          if (!(base instanceof infer.Obj)) return base;
          var proto = descendProps(base, ["prototype"]);
          if (proto && (proto = proto.getObjType()))
            base = proto;
        }
        if (comp && this.eat("[")) return this.parsePoly(base);
        if (top && this.base) {
          this.base.proto = base;
          var name = base.hasCtor && base.hasCtor.name || base.name;
          if (name) this.base.name = name;
          return this.base;
        }
        if (top && this.forceNew) return new infer.Obj(base);
        return infer.getInstance(base);
      } else if (this.eat(":")) {
        var name = this.word(/[\w$\.]/);
        return infer.getSymbol(name);
      } else if (comp && this.eat("!")) {
        var arg = this.word(/\d/);
        if (arg) {
          arg = Number(arg);
          return function(_self, args) {return args[arg] || infer.ANull;};
        } else if (this.eat("this")) {
          return function(self) {return self;};
        } else if (this.eat("custom:")) {
          var fname = this.word(/[\w$]/);
          return customFunctions[fname] || function() { return infer.ANull; };
        } else {
          return this.fromWord("!" + this.word(/[\w$<>\.!:]/));
        }
      } else if (this.eat("?")) {
        return infer.ANull;
      } else {
        return this.fromWord(this.word(/[\w$<>\.!:`]/));
      }
    },
    fromWord: function(spec) {
      var cx = infer.cx();
      switch (spec) {
      case "number": return cx.num;
      case "string": return cx.str;
      case "bool": return cx.bool;
      case "<top>": return cx.topScope;
      }
      if (cx.localDefs && spec in cx.localDefs) return cx.localDefs[spec];
      return parsePath(spec);
    },
    parsePoly: function(base) {
      var propName = "<i>", match;
      if (match = this.spec.slice(this.pos).match(/^\s*([\w$:]+)\s*=\s*/)) {
        propName = match[1];
        this.pos += match[0].length;
      }
      var value = this.parseType(true);
      if (!this.eat("]")) this.error();
      if (value.call) return function(self, args) {
        var instance = new infer.Obj(base);
        value(self, args).propagate(instance.defProp(propName));
        return instance;
      };
      var instance = new infer.Obj(base);
      value.propagate(instance.defProp(propName));
      return instance;
    }
  };

  function addArgCallEffects(type) {
    if (type instanceof infer.Fn && type.args) for (var i = 0; i < type.args.length; ++i) {
      var arg = type.args[i];
      if (arg instanceof infer.Fn && arg.args && arg.args.length) addArgCallEffect(type, i);
    }
  }

  function addArgCallEffect(type, argNum) {
    addEffect(type, function(_self, args) {
      if (args[argNum]) args[argNum].propagate(
        new infer.IsCallee(infer.cx().topScope, type.args[argNum].args, null, infer.ANull));
    });
  }

  function parseType(spec, name, base, forceNew) {
    var type = new TypeParser(spec, null, base, forceNew).parseType(false, name, true);
    if (type instanceof infer.AVal) type.types.forEach(addArgCallEffects);
    else addArgCallEffects(type);
    return type;
  }

  function addEffect(fn, handler, replaceRet) {
    var oldCmp = fn.computeRet, rv = fn.retval;
    fn.computeRet = function(self, args, argNodes) {
      var handled = handler(self, args, argNodes);
      var old = oldCmp ? oldCmp(self, args, argNodes) : rv;
      return replaceRet ? handled : old;
    };
  }

  var parseEffect = exports.parseEffect = function(effect, fn) {
    var m;
    if (effect.indexOf("propagate ") == 0) {
      var p = new TypeParser(effect, 10);
      var origin = p.parseType(true);
      if (!p.eat(" ")) p.error();
      var target = p.parseType(true);
      addEffect(fn, function(self, args) {
        unwrapType(origin, self, args).propagate(unwrapType(target, self, args));
      });
    } else if (effect.indexOf("call ") == 0) {
      var andRet = effect.indexOf("and return ", 5) == 5;
      var p = new TypeParser(effect, andRet ? 16 : 5);
      var getCallee = p.parseType(true), getSelf = null, getArgs = [];
      if (p.eat(" this=")) getSelf = p.parseType(true);
      while (p.eat(" ")) getArgs.push(p.parseType(true));
      addEffect(fn, function(self, args) {
        var callee = unwrapType(getCallee, self, args);
        var slf = getSelf ? unwrapType(getSelf, self, args) : infer.ANull, as = [];
        for (var i = 0; i < getArgs.length; ++i) as.push(unwrapType(getArgs[i], self, args));
        var result = andRet ? new infer.AVal : infer.ANull;
        callee.propagate(new infer.IsCallee(slf, as, null, result));
        return result;
      }, andRet);
    } else if (m = effect.match(/^custom (\S+)\s*(.*)/)) {
      var customFunc = customFunctions[m[1]];
      if (customFunc) addEffect(fn, m[2] ? customFunc(m[2]) : customFunc);
    } else if (effect.indexOf("copy ") == 0) {
      var p = new TypeParser(effect, 5);
      var getFrom = p.parseType(true);
      p.eat(" ");
      var getTo = p.parseType(true);
      addEffect(fn, function(self, args) {
        var from = unwrapType(getFrom, self, args), to = unwrapType(getTo, self, args);
        from.forAllProps(function(prop, val, local) {
          if (local && prop != "<i>")
            to.propagate(new infer.DefProp(prop, val));
        });
      });
    } else {
      throw new Error("Unknown effect type: " + effect);
    }
  };

  var currentTopScope;

  var parsePath = exports.parsePath = function(path, scope) {
    var cx = infer.cx(), cached = cx.paths[path], origPath = path;
    if (cached != null) return cached;
    cx.paths[path] = infer.ANull;

    var base = scope || currentTopScope || cx.topScope;

    if (cx.localDefs) for (var name in cx.localDefs) {
      if (path.indexOf(name) == 0) {
        if (path == name) return cx.paths[path] = cx.localDefs[path];
        if (path.charAt(name.length) == ".") {
          base = cx.localDefs[name];
          path = path.slice(name.length + 1);
          break;
        }
      }
    }

    var result = descendProps(base, path.split("."));
    // Uncomment this to get feedback on your poorly written .json files
    // if (result == infer.ANull) console.error("bad path: " + origPath + " (" + cx.curOrigin + ")")
    cx.paths[origPath] = result == infer.ANull ? null : result;
    return result;
  };

  function descendProps(base, parts) {
    for (var i = 0; i < parts.length && base != infer.ANull; ++i) {
      var prop = parts[i];
      if (prop.charAt(0) == "!") {
        if (prop == "!proto") {
          base = (base instanceof infer.Obj && base.proto) || infer.ANull;
        } else {
          var fn = base.getFunctionType();
          if (!fn) {
            base = infer.ANull;
          } else if (prop == "!ret") {
            base = fn.retval && fn.retval.getType(false) || infer.ANull;
          } else {
            var arg = fn.args && fn.args[Number(prop.slice(1))];
            base = (arg && arg.getType(false)) || infer.ANull;
          }
        }
      } else if (base instanceof infer.Obj &&
                 (prop == "prototype" && base instanceof infer.Fn || base.hasProp(prop))) {
        var propVal = base.getProp(prop);
        if (!propVal || propVal.isEmpty())
          base = infer.ANull;
        else
          base = propVal.types[0];
      } else {
        base = infer.ANull;
      }
    }
    return base;
  }

  function emptyObj(ctor) {
    var empty = Object.create(ctor.prototype);
    empty.props = Object.create(null);
    empty.isShell = true;
    return empty;
  }

  function isSimpleAnnotation(spec) {
    if (!spec["!type"] || /^(fn\(|\[|\+)/.test(spec["!type"])) return false;
    for (var prop in spec)
      if (prop != "!type" && prop != "!doc" && prop != "!url" && prop != "!span" && prop != "!data")
        return false;
    return true;
  }

  function passOne(base, spec, path) {
    if (!base) {
      var tp = spec["!type"];
      if (tp) {
        if (/^fn\(/.test(tp)) base = emptyObj(infer.Fn);
        else if (tp.charAt(0) == "[") base = emptyObj(infer.Arr);
        else if (tp.charAt(0) == "+") base = emptyObj(infer.Obj);
        else throw new Error("Invalid !type spec: " + tp);
      } else if (spec["!stdProto"]) {
        base = infer.cx().protos[spec["!stdProto"]];
      } else {
        base = emptyObj(infer.Obj);
      }
      base.name = path;
    }

    for (var name in spec) if (hop(spec, name) && name.charCodeAt(0) != 33) {
      var inner = spec[name];
      if (typeof inner == "string" || isSimpleAnnotation(inner)) continue;
      var prop = base.defProp(name);
      passOne(prop.getObjType(), inner, path ? path + "." + name : name).propagate(prop);
    }
    return base;
  }

  function passTwo(base, spec, path) {
    if (base.isShell) {
      delete base.isShell;
      var tp = spec["!type"];
      if (tp) {
        parseType(tp, path, base);
      } else {
        var proto = spec["!proto"] && parseType(spec["!proto"]);
        infer.Obj.call(base, proto instanceof infer.Obj ? proto : true, path);
      }
    }

    var effects = spec["!effects"];
    if (effects && base instanceof infer.Fn) for (var i = 0; i < effects.length; ++i)
      parseEffect(effects[i], base);
    copyInfo(spec, base);

    for (var name in spec) if (hop(spec, name) && name.charCodeAt(0) != 33) {
      var inner = spec[name], known = base.defProp(name), innerPath = path ? path + "." + name : name;
      if (typeof inner == "string") {
        if (known.isEmpty()) parseType(inner, innerPath).propagate(known);
      } else {
        if (!isSimpleAnnotation(inner))
          passTwo(known.getObjType(), inner, innerPath);
        else if (known.isEmpty())
          parseType(inner["!type"], innerPath, null, true).propagate(known);
        else
          continue;
        if (inner["!doc"]) known.doc = inner["!doc"];
        if (inner["!url"]) known.url = inner["!url"];
        if (inner["!span"]) known.span = inner["!span"];
      }
    }
    return base;
  }

  function copyInfo(spec, type) {
    if (spec["!doc"]) type.doc = spec["!doc"];
    if (spec["!url"]) type.url = spec["!url"];
    if (spec["!span"]) type.span = spec["!span"];
    if (spec["!data"]) type.metaData = spec["!data"];
  }

  function doLoadEnvironment(data, scope) {
    var cx = infer.cx(), server = cx.parent;

    infer.addOrigin(cx.curOrigin = data["!name"] || "env#" + cx.origins.length);
    cx.localDefs = cx.definitions[cx.curOrigin] = Object.create(null);

    if (server) server.signal("preLoadDef", data);

    passOne(scope, data);

    var def = data["!define"];
    if (def) {
      for (var name in def) {
        var spec = def[name];
        cx.localDefs[name] = typeof spec == "string" ? parsePath(spec) : passOne(null, spec, name);
      }
      for (var name in def) {
        var spec = def[name];
        if (typeof spec != "string") passTwo(cx.localDefs[name], def[name], name);
      }
    }

    passTwo(scope, data);

    if (server) server.signal("postLoadDef", data);

    cx.curOrigin = cx.localDefs = null;
  }

  exports.load = function(data, scope) {
    if (!scope) scope = infer.cx().topScope;
    var oldScope = currentTopScope;
    currentTopScope = scope;
    try {
      doLoadEnvironment(data, scope);
    } finally {
      currentTopScope = oldScope;
    }
  };

  exports.parse = function(data, origin, path) {
    var cx = infer.cx();
    if (origin) {
      cx.origin = origin;
      cx.localDefs = cx.definitions[origin];
    }

    try {
      if (typeof data == "string")
        return parseType(data, path);
      else
        return passTwo(passOne(null, data, path), data, path);
    } finally {
      if (origin) cx.origin = cx.localDefs = null;
    }
  };

  // Used to register custom logic for more involved effect or type
  // computation.
  var customFunctions = Object.create(null);
  infer.registerFunction = function(name, f) { customFunctions[name] = f; };

  var IsCreated = infer.constraint({
    construct: function(created, target, spec) {
      this.created = created;
      this.target = target;
      this.spec = spec;
    },
    addType: function(tp) {
      if (tp instanceof infer.Obj && this.created++ < 5) {
        var derived = new infer.Obj(tp), spec = this.spec;
        if (spec instanceof infer.AVal) spec = spec.getObjType(false);
        if (spec instanceof infer.Obj) for (var prop in spec.props) {
          var cur = spec.props[prop].types[0];
          var p = derived.defProp(prop);
          if (cur && cur instanceof infer.Obj && cur.props.value) {
            var vtp = cur.props.value.getType(false);
            if (vtp) p.addType(vtp);
          }
        }
        this.target.addType(derived);
      }
    }
  });

  infer.registerFunction("Object_create", function(_self, args, argNodes) {
    if (argNodes && argNodes.length && argNodes[0].type == "Literal" && argNodes[0].value == null)
      return new infer.Obj();

    var result = new infer.AVal;
    if (args[0]) args[0].propagate(new IsCreated(0, result, args[1]));
    return result;
  });

  var PropSpec = infer.constraint({
    construct: function(target) { this.target = target; },
    addType: function(tp) {
      if (!(tp instanceof infer.Obj)) return;
      if (tp.hasProp("value"))
        tp.getProp("value").propagate(this.target);
      else if (tp.hasProp("get"))
        tp.getProp("get").propagate(new infer.IsCallee(infer.ANull, [], null, this.target));
    }
  });

  infer.registerFunction("Object_defineProperty", function(_self, args, argNodes) {
    if (argNodes && argNodes.length >= 3 && argNodes[1].type == "Literal" &&
        typeof argNodes[1].value == "string") {
      var obj = args[0], connect = new infer.AVal;
      obj.propagate(new infer.DefProp(argNodes[1].value, connect, argNodes[1]));
      args[2].propagate(new PropSpec(connect));
    }
    return infer.ANull;
  });

  infer.registerFunction("Object_defineProperties", function(_self, args, argNodes) {
    if (args.length >= 2) {
      var obj = args[0];
      args[1].forAllProps(function(prop, val, local) {
        if (!local) return;
        var connect = new infer.AVal;
        obj.propagate(new infer.DefProp(prop, connect, argNodes && argNodes[1]));
        val.propagate(new PropSpec(connect));
      });
    }
    return infer.ANull;
  });

  var IsBound = infer.constraint({
    construct: function(self, args, target) {
      this.self = self; this.args = args; this.target = target;
    },
    addType: function(tp) {
      if (!(tp instanceof infer.Fn)) return;
      this.target.addType(new infer.Fn(tp.name, infer.ANull, tp.args.slice(this.args.length),
                                       tp.argNames.slice(this.args.length), tp.retval, tp.generator));
      this.self.propagate(tp.self);
      for (var i = 0; i < Math.min(tp.args.length, this.args.length); ++i)
        this.args[i].propagate(tp.args[i]);
    }
  });

  infer.registerFunction("Function_bind", function(self, args) {
    if (!args.length) return infer.ANull;
    var result = new infer.AVal;
    self.propagate(new IsBound(args[0], args.slice(1), result));
    return result;
  });

  infer.registerFunction("Array_ctor", function(_self, args) {
    var arr = new infer.Arr;
    if (args.length != 1 || !args[0].hasType(infer.cx().num)) {
      var content = arr.getProp("<i>");
      for (var i = 0; i < args.length; ++i) args[i].propagate(content);
    }
    return arr;
  });

  function makePromise() {
    var defs = infer.cx().definitions.ecmascript;
    return defs && new infer.Obj(defs["Promise.prototype"]);
  }

  infer.registerFunction("Promise_ctor", function(_self, args, argNodes) {
    var self = makePromise();
    if (!self || args.length < 1) return infer.ANull;
    var valProp = self.defProp(":t", argNodes && argNodes[0]);
    var valArg = new infer.AVal;
    valArg.propagate(valProp);
    var exec = new infer.Fn("execute", infer.ANull, [valArg], ["value"], infer.ANull);
    var reject = infer.cx().definitions.ecmascript.Promise_reject;
    args[0].propagate(new infer.IsCallee(infer.ANull, [exec, reject], null, infer.ANull));
    return self;
  });

  // Definition for Promise.resolve()
  // The behavior is different for Promise and non-Promise arguments, so we
  // need a custom definition to handle the different cases properly.
  infer.registerFunction("Promise_resolve", function(_self, args, argNodes) {
    var self = makePromise();
    if (!self) return infer.ANull;
    if (args.length) {
      var valProp = self.defProp(":t", argNodes && argNodes[0]);
      var valArg = new infer.AVal;
      valArg.propagate(valProp);
      args[0].propagate(new PromiseResolvesTo(valArg));
    }
    return self;
  });

  var PromiseResolvesTo = infer.constraint({
    construct: function(output) { this.output = output; },
    addType: function(tp) {
      if (tp.constructor == infer.Obj && tp.name == "Promise" && tp.hasProp(":t"))
        tp.getProp(":t").propagate(this.output);
      else
        tp.propagate(this.output);
    }
  });

  var WG_PROMISE_KEEP_VALUE = 50;

  infer.registerFunction("Promise_then", function(self, args, argNodes) {
    var fn = args.length && args[0].getFunctionType();
    var defs = infer.cx().definitions.ecmascript;
    if (!fn || !defs) return self;

    var result = new infer.Obj(defs["Promise.prototype"]);
    var value = result.defProp(":t", argNodes && argNodes[0]), ty;
    if (fn.retval.isEmpty() && (ty = self.getType()) instanceof infer.Obj && ty.hasProp(":t"))
      ty.getProp(":t").propagate(value, WG_PROMISE_KEEP_VALUE);
    fn.retval.propagate(new PromiseResolvesTo(value));
    return result;
  });

  infer.registerFunction("getOwnPropertySymbols", function(_self, args) {
    if (!args.length) return infer.ANull;
    var result = new infer.AVal;
    args[0].forAllProps(function(prop, _val, local) {
      if (local && prop.charAt(0) == ":") result.addType(infer.getSymbol(prop.slice(1)));
    });
    return result;
  });

  infer.registerFunction("getSymbol", function(_self, _args, argNodes) {
    if (argNodes && argNodes.length && argNodes[0].type == "Literal" && typeof argNodes[0].value == "string")
      return infer.getSymbol(argNodes[0].value);
    else
      return infer.ANull;
  });

  return exports;
});
/* --------------------------------------------------------------
         js/libs/acorn/comment.js
   -------------------------------------------------------------- */
(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    return mod(exports);
  if (typeof define == "function" && define.amd) // AMD
    return define(["exports"], mod);
  mod(tern.comment || (tern.comment = {}));
})(function(exports) {
  function isSpace(ch) {
    return (ch < 14 && ch > 8) || ch === 32 || ch === 160;
  }

  function onOwnLine(text, pos) {
    for (; pos > 0; --pos) {
      var ch = text.charCodeAt(pos - 1);
      if (ch == 10) break;
      if (!isSpace(ch)) return false;
    }
    return true;
  }

  // Gather comments directly before a function
  exports.commentsBefore = function(text, pos) {
    var found = null, emptyLines = 0, topIsLineComment;
    out: while (pos > 0) {
      var prev = text.charCodeAt(pos - 1);
      if (prev == 10) {
        for (var scan = --pos, sawNonWS = false; scan > 0; --scan) {
          prev = text.charCodeAt(scan - 1);
          if (prev == 47 && text.charCodeAt(scan - 2) == 47) {
            if (!onOwnLine(text, scan - 2)) break out;
            var content = text.slice(scan, pos);
            if (!emptyLines && topIsLineComment) found[0] = content + "\n" + found[0];
            else (found || (found = [])).unshift(content);
            topIsLineComment = true;
            emptyLines = 0;
            pos = scan - 2;
            break;
          } else if (prev == 10) {
            if (!sawNonWS && ++emptyLines > 1) break out;
            break;
          } else if (!sawNonWS && !isSpace(prev)) {
            sawNonWS = true;
          }
        }
      } else if (prev == 47 && text.charCodeAt(pos - 2) == 42) {
        for (var scan = pos - 2; scan > 1; --scan) {
          if (text.charCodeAt(scan - 1) == 42 && text.charCodeAt(scan - 2) == 47) {
            if (!onOwnLine(text, scan - 2)) break out;
            (found || (found = [])).unshift(text.slice(scan, pos - 2));
            topIsLineComment = false;
            emptyLines = 0;
            break;
          }
        }
        pos = scan - 2;
      } else if (isSpace(prev)) {
        --pos;
      } else {
        break;
      }
    }
    return found;
  };

  exports.commentAfter = function(text, pos) {
    while (pos < text.length) {
      var next = text.charCodeAt(pos);
      if (next == 47) {
        var after = text.charCodeAt(pos + 1), end;
        if (after == 47) // line comment
          end = text.indexOf("\n", pos + 2);
        else if (after == 42) // block comment
          end = text.indexOf("*/", pos + 2);
        else
          return;
        return text.slice(pos + 2, end < 0 ? text.length : end);
      } else if (isSpace(next)) {
        ++pos;
      }
    }
  };

  exports.ensureCommentsBefore = function(text, node) {
    if (node.hasOwnProperty("commentsBefore")) return node.commentsBefore;
    return node.commentsBefore = exports.commentsBefore(text, node.start);
  };
});
/* --------------------------------------------------------------
         js/libs/acorn/infer.js
   -------------------------------------------------------------- */
// Main type inference engine

// Walks an AST, building up a graph of abstract values and constraints
// that cause types to flow from one node to another. Also defines a
// number of utilities for accessing ASTs and scopes.

// Analysis is done in a context, which is tracked by the dynamically
// bound cx variable. Use withContext to set the current context.

// For memory-saving reasons, individual types export an interface
// similar to abstract values (which can hold multiple types), and can
// thus be used in place abstract values that only ever contain a
// single type.

(function(root, mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    return mod(exports, require("acorn"), require("acorn-loose"), require("acorn-walk"),
               require("./def"), require("./signal"));
  if (typeof define == "function" && define.amd) // AMD
    return define(["exports", "acorn/dist/acorn", "acorn-loose/dist/acorn-loose", "acorn-walk/dist/walk", "./def", "./signal"], mod);
  mod(root.tern || (root.tern = {}), acorn, acorn.loose, acorn.walk, tern.def, tern.signal); // Plain browser env
})(this, function(exports, acorn, acorn_loose, walk, def, signal) {
  "use strict";

  var toString = exports.toString = function(type, maxDepth, parent) {
    if (!type || type == parent || maxDepth && maxDepth < -3) return "?";
    return type.toString(maxDepth, parent);
  };

  // A variant of AVal used for unknown, dead-end values. Also serves
  // as prototype for AVals, Types, and Constraints because it
  // implements 'empty' versions of all the methods that the code
  // expects.
  var ANull = exports.ANull = signal.mixin({
    addType: function() {},
    propagate: function() {},
    getProp: function() { return ANull; },
    forAllProps: function() {},
    hasType: function() { return false; },
    isEmpty: function() { return true; },
    getFunctionType: function() {},
    getObjType: function() {},
    getSymbolType: function() {},
    getType: function() {},
    gatherProperties: function() {},
    propagatesTo: function() {},
    typeHint: function() {},
    propHint: function() {},
    toString: function() { return "?"; }
  });

  function extend(proto, props) {
    var obj = Object.create(proto);
    if (props) for (var prop in props) obj[prop] = props[prop];
    return obj;
  }

  // ABSTRACT VALUES

  var WG_DEFAULT = 100, WG_NEW_INSTANCE = 90, WG_MADEUP_PROTO = 10,
      WG_MULTI_MEMBER = 6, WG_CATCH_ERROR = 6,
      WG_PHANTOM_OBJ = 1,
      WG_GLOBAL_THIS = 90, WG_SPECULATIVE_THIS = 2, WG_SPECULATIVE_PROTO_THIS = 4;

  var AVal = exports.AVal = function() {
    this.types = [];
    this.forward = null;
    this.maxWeight = 0;
  };
  AVal.prototype = extend(ANull, {
    addType: function(type, weight) {
      weight = weight || WG_DEFAULT;
      if (this.maxWeight < weight) {
        this.maxWeight = weight;
        if (this.types.length == 1 && this.types[0] == type) return;
        this.types.length = 0;
      } else if (this.maxWeight > weight || this.types.indexOf(type) > -1) {
        return;
      }

      this.signal("addType", type);
      this.types.push(type);
      var forward = this.forward;
      if (forward) withWorklist(function(add) {
        for (var i = 0; i < forward.length; ++i) add(type, forward[i], weight);
      });
    },

    propagate: function(target, weight) {
      if (target == ANull || (target instanceof Type && this.forward && this.forward.length > 2)) return;
      if (weight && weight != WG_DEFAULT) target = new Muffle(target, weight);
      (this.forward || (this.forward = [])).push(target);
      var types = this.types;
      if (types.length) withWorklist(function(add) {
        for (var i = 0; i < types.length; ++i) add(types[i], target, weight);
      });
    },

    getProp: function(prop) {
      if (ignoredProp(prop)) return ANull;
      var found = (this.props || (this.props = Object.create(null)))[prop];
      if (!found) {
        found = this.props[prop] = new AVal;
        this.propagate(new GetProp(prop, found));
      }
      return found;
    },

    forAllProps: function(c) {
      this.propagate(new ForAllProps(c));
    },

    hasType: function(type) {
      return this.types.indexOf(type) > -1;
    },
    isEmpty: function() { return this.types.length === 0; },
    getFunctionType: function() {
      for (var i = this.types.length - 1; i >= 0; --i)
        if (this.types[i] instanceof Fn) return this.types[i];
    },
    getObjType: function() {
      var seen = null;
      for (var i = this.types.length - 1; i >= 0; --i) {
        var type = this.types[i];
        if (!(type instanceof Obj)) continue;
        if (type.name) return type;
        if (!seen) seen = type;
      }
      return seen;
    },

    getSymbolType: function() {
      for (var i = this.types.length - 1; i >= 0; --i)
        if (this.types[i] instanceof Sym) return this.types[i];
    },

    getType: function(guess) {
      if (this.types.length === 0 && guess !== false) return this.makeupType();
      if (this.types.length === 1) return this.types[0];
      return canonicalType(this.types);
    },

    toString: function(maxDepth, parent) {
      if (this.types.length == 0) return toString(this.makeupType(), maxDepth, parent);
      if (this.types.length == 1) return toString(this.types[0], maxDepth, parent);
      var simplified = simplifyTypes(this.types);
      if (simplified.length > 2) return "?";
      return simplified.map(function(tp) { return toString(tp, maxDepth, parent); }).join("|");
    },

    makeupPropType: function(obj) {
      var propName = this.propertyName;

      var protoProp = obj.proto && obj.proto.hasProp(propName);
      if (protoProp) {
        var fromProto = protoProp.getType();
        if (fromProto) return fromProto;
      }

      if (propName != "<i>") {
        var computedProp = obj.hasProp("<i>");
        if (computedProp) return computedProp.getType();
      } else if (obj.props["<i>"] != this) {
        for (var prop in obj.props) {
          var val = obj.props[prop];
          if (!val.isEmpty()) return val.getType();
        }
      }
    },

    makeupType: function() {
      var computed = this.propertyOf && this.makeupPropType(this.propertyOf);
      if (computed) return computed;

      if (!this.forward) return null;
      for (var i = this.forward.length - 1; i >= 0; --i) {
        var hint = this.forward[i].typeHint();
        if (hint && !hint.isEmpty()) {guessing = true; return hint;}
      }

      var props = Object.create(null), foundProp = null;
      for (var i = 0; i < this.forward.length; ++i) {
        var prop = this.forward[i].propHint();
        if (prop && prop != "length" && prop != "<i>" && prop != "✖" && prop != cx.completingProperty) {
          props[prop] = true;
          foundProp = prop;
        }
      }
      if (!foundProp) return null;

      var objs = objsWithProp(foundProp);
      if (objs) {
        var matches = [];
        search: for (var i = 0; i < objs.length; ++i) {
          var obj = objs[i];
          for (var prop in props) if (!obj.hasProp(prop)) continue search;
          if (obj.hasCtor) obj = getInstance(obj);
          matches.push(obj);
        }
        var canon = canonicalType(matches);
        if (canon) {guessing = true; return canon;}
      }
    },

    typeHint: function() { return this.types.length ? this.getType() : null; },
    propagatesTo: function() { return this; },

    gatherProperties: function(f, depth) {
      for (var i = 0; i < this.types.length; ++i)
        this.types[i].gatherProperties(f, depth);
    },

    guessProperties: function(f) {
      if (this.forward) for (var i = 0; i < this.forward.length; ++i) {
        var prop = this.forward[i].propHint();
        if (prop) f(prop, null, 0);
      }
      var guessed = this.makeupType();
      if (guessed) guessed.gatherProperties(f);
    }
  });

  function similarAVal(a, b, depth) {
    var typeA = a.getType(false), typeB = b.getType(false);
    if (!typeA || !typeB) return true;
    return similarType(typeA, typeB, depth);
  }

  function similarType(a, b, depth) {
    if (!a || depth >= 5) return b;
    if (!a || a == b) return a;
    if (!b) return a;
    if (a.constructor != b.constructor) return false;
    if (a.constructor == Arr) {
      var innerA = a.getProp("<i>").getType(false);
      if (!innerA) return b;
      var innerB = b.getProp("<i>").getType(false);
      if (!innerB || similarType(innerA, innerB, depth + 1)) return b;
    } else if (a.constructor == Obj) {
      var propsA = 0, propsB = 0, same = 0;
      for (var prop in a.props) {
        propsA++;
        if (prop in b.props && similarAVal(a.props[prop], b.props[prop], depth + 1))
          same++;
      }
      for (var prop in b.props) propsB++;
      if (propsA && propsB && same < Math.max(propsA, propsB) / 2) return false;
      return propsA > propsB ? a : b;
    } else if (a.constructor == Fn) {
      if (a.args.length != b.args.length ||
          !a.args.every(function(tp, i) { return similarAVal(tp, b.args[i], depth + 1); }) ||
          !similarAVal(a.retval, b.retval, depth + 1) || !similarAVal(a.self, b.self, depth + 1))
        return false;
      return a;
    } else {
      return false;
    }
  }

  var simplifyTypes = exports.simplifyTypes = function(types) {
    var found = [];
    outer: for (var i = 0; i < types.length; ++i) {
      var tp = types[i];
      for (var j = 0; j < found.length; j++) {
        var similar = similarType(tp, found[j], 0);
        if (similar) {
          found[j] = similar;
          continue outer;
        }
      }
      found.push(tp);
    }
    return found;
  };

  function canonicalType(types) {
    var arrays = 0, fns = 0, objs = 0, prim = null;
    for (var i = 0; i < types.length; ++i) {
      var tp = types[i];
      if (tp instanceof Arr) ++arrays;
      else if (tp instanceof Fn) ++fns;
      else if (tp instanceof Obj) ++objs;
      else if (tp instanceof Prim) {
        if (prim && tp.name != prim.name) return null;
        prim = tp;
      }
    }
    var kinds = (arrays && 1) + (fns && 1) + (objs && 1) + (prim && 1);
    if (kinds > 1) return null;
    if (prim) return prim;

    var maxScore = 0, maxTp = null;
    for (var i = 0; i < types.length; ++i) {
      var tp = types[i], score = 0;
      if (arrays) {
        score = tp.getProp("<i>").isEmpty() ? 1 : 2;
      } else if (fns) {
        score = 1;
        for (var j = 0; j < tp.args.length; ++j) if (!tp.args[j].isEmpty()) ++score;
        if (!tp.retval.isEmpty()) ++score;
      } else if (objs) {
        score = tp.name ? 100 : 2;
      }
      if (score >= maxScore) { maxScore = score; maxTp = tp; }
    }
    return maxTp;
  }

  // PROPAGATION STRATEGIES

  var constraint = exports.constraint = function(methods) {
    var ctor = function() {
      this.origin = cx.curOrigin;
      this.construct.apply(this, arguments);
    };
    ctor.prototype = Object.create(ANull);
    for (var m in methods) if (methods.hasOwnProperty(m)) ctor.prototype[m] = methods[m];
    return ctor;
  };

  var GetProp = constraint({
    construct: function(prop, target) {
      this.prop = prop; this.target = target;
    },
    addType: function(type, weight) {
      if (type.getProp)
        type.getProp(this.prop).propagate(this.target, weight);
    },
    propHint: function() { return this.prop; },
    propagatesTo: function() {
      if (this.prop == "<i>" || !/[^\w_]/.test(this.prop))
        return {target: this.target, pathExt: "." + this.prop};
    }
  });

  var DefProp = exports.PropHasSubset = exports.DefProp = constraint({
    construct: function(prop, type, originNode) {
      this.prop = prop; this.type = type; this.originNode = originNode;
    },
    addType: function(type, weight) {
      if (!(type instanceof Obj)) return;
      var prop = type.defProp(this.prop, this.originNode);
      if (!prop.origin) prop.origin = this.origin;
      this.type.propagate(prop, weight);
    },
    propHint: function() { return this.prop; }
  });

  var ForAllProps = constraint({
    construct: function(c) { this.c = c; },
    addType: function(type) {
      if (!(type instanceof Obj)) return;
      type.forAllProps(this.c);
    }
  });

  function withDisabledComputing(fn, body) {
    cx.disabledComputing = {fn: fn, prev: cx.disabledComputing};
    var result = body();
    cx.disabledComputing = cx.disabledComputing.prev;
    return result;
  }
  var IsCallee = exports.IsCallee = constraint({
    construct: function(self, args, argNodes, retval) {
      this.self = self; this.args = args; this.argNodes = argNodes; this.retval = retval;
      this.disabled = cx.disabledComputing;
    },
    addType: function(fn, weight) {
      if (!(fn instanceof Fn)) return;
      for (var i = 0; i < this.args.length; ++i) {
        if (i < fn.args.length) this.args[i].propagate(fn.args[i], weight);
        if (fn.arguments) this.args[i].propagate(fn.arguments, weight);
      }
      if (!fn.isArrowFn())
        this.self.propagate(fn.self, this.self == cx.topScope ? WG_GLOBAL_THIS : weight);
      var compute = fn.computeRet, result = fn.retval;
      if (compute) for (var d = this.disabled; d; d = d.prev)
        if (d.fn == fn || fn.originNode && d.fn.originNode == fn.originNode) compute = null;
      if (compute) {
        var old = cx.disabledComputing;
        cx.disabledComputing = this.disabled;
        result = compute(this.self, this.args, this.argNodes);
        cx.disabledComputing = old;
      }
      if (fn.async && !fn.generator) {
        var tp = result.getType();
        if (!(tp && tp.constructor == Obj && tp.name == "Promise")) {
          var defs = cx.definitions.ecmascript;
          var rtnval = defs && new Obj(defs["Promise.prototype"]);
          if (rtnval) {
            rtnval.getType().propagate(new DefProp(':t', result));
            result = rtnval;            
          }
        }
      }
      maybeIterator(fn, result).propagate(this.retval, weight);
    },
    typeHint: function() {
      var names = [];
      for (var i = 0; i < this.args.length; ++i) names.push("?");
      return new Fn(null, this.self, this.args, names, ANull);
    },
    propagatesTo: function() {
      return {target: this.retval, pathExt: ".!ret"};
    }
  });

  var HasMethodCall = constraint({
    construct: function(propName, args, argNodes, retval) {
      this.propName = propName; this.args = args; this.argNodes = argNodes; this.retval = retval;
      this.disabled = cx.disabledComputing;
    },
    addType: function(obj, weight) {
      var callee = new IsCallee(obj, this.args, this.argNodes, this.retval);
      callee.disabled = this.disabled;
      obj.getProp(this.propName).propagate(callee, weight);
    },
    propHint: function() { return this.propName; }
  });

  var IsCtor = exports.IsCtor = constraint({
    construct: function(target, noReuse) {
      this.target = target; this.noReuse = noReuse;
    },
    addType: function(f, weight) {
      if (!(f instanceof Fn)) return;
      if (cx.parent && !cx.parent.options.reuseInstances) this.noReuse = true;
      f.getProp("prototype").propagate(new IsProto(this.noReuse ? false : f, this.target), weight);
    }
  });

  var getInstance = exports.getInstance = function(obj, ctor) {
    if (ctor === false) return new Obj(obj);

    if (!ctor) ctor = obj.hasCtor;
    if (!obj.instances) obj.instances = [];
    for (var i = 0; i < obj.instances.length; ++i) {
      var cur = obj.instances[i];
      if (cur.ctor == ctor) return cur.instance;
    }
    var instance = new Obj(obj, ctor && ctor.name);
    instance.origin = obj.origin;
    obj.instances.push({ctor: ctor, instance: instance});
    return instance;
  };

  var IsProto = exports.IsProto = constraint({
    construct: function(ctor, target) {
      this.ctor = ctor; this.target = target;
    },
    addType: function(o, _weight) {
      if (!(o instanceof Obj)) return;
      if ((this.count = (this.count || 0) + 1) > 8) return;
      if (o == cx.protos.Array)
        this.target.addType(new Arr);
      else
        this.target.addType(getInstance(o, this.ctor));
    }
  });

  var FnPrototype = constraint({
    construct: function(fn) { this.fn = fn; },
    addType: function(o, _weight) {
      if (o instanceof Obj && !o.hasCtor) {
        o.hasCtor = this.fn;
        var adder = new SpeculativeThis(o, this.fn);
        adder.addType(this.fn);
        o.forAllProps(function(_prop, val, local) {
          if (local) val.propagate(adder);
        });
      }
    }
  });

  var IsAdded = constraint({
    construct: function(other, target) {
      this.other = other; this.target = target;
    },
    addType: function(type, weight) {
      if (type == cx.str)
        this.target.addType(cx.str, weight);
      else if (type == cx.num && this.other.hasType(cx.num))
        this.target.addType(cx.num, weight);
    },
    typeHint: function() { return this.other; }
  });

  var IfObj = exports.IfObj = constraint({
    construct: function(target) { this.target = target; },
    addType: function(t, weight) {
      if (t instanceof Obj) this.target.addType(t, weight);
    },
    propagatesTo: function() { return this.target; }
  });

  var SpeculativeThis = constraint({
    construct: function(obj, ctor) { this.obj = obj; this.ctor = ctor; },
    addType: function(tp) {
      if (tp instanceof Fn && tp.self)
        tp.self.addType(getInstance(this.obj, this.ctor), WG_SPECULATIVE_PROTO_THIS);
    }
  });

  var HasProto = constraint({
    construct: function(obj) { this.obj = obj },
    addType: function(tp) {
      if (tp instanceof Obj && this.obj.proto == cx.protos.Object)
        this.obj.replaceProto(tp);
    }
  });

  var Muffle = constraint({
    construct: function(inner, weight) {
      this.inner = inner; this.weight = weight;
    },
    addType: function(tp, weight) {
      this.inner.addType(tp, Math.min(weight, this.weight));
    },
    propagatesTo: function() { return this.inner.propagatesTo(); },
    typeHint: function() { return this.inner.typeHint(); },
    propHint: function() { return this.inner.propHint(); }
  });

  // TYPE OBJECTS

  var Type = exports.Type = function() {};
  Type.prototype = extend(ANull, {
    constructor: Type,
    propagate: function(c, w) { c.addType(this, w); },
    hasType: function(other) { return other == this; },
    isEmpty: function() { return false; },
    typeHint: function() { return this; },
    getType: function() { return this; }
  });

  var Prim = exports.Prim = function(proto, name) { this.name = name; this.proto = proto; };
  Prim.prototype = extend(Type.prototype, {
    constructor: Prim,
    toString: function() { return this.name; },
    getProp: function(prop) {return this.proto.hasProp(prop) || ANull;},
    gatherProperties: function(f, depth) {
      if (this.proto) this.proto.gatherProperties(f, depth);
    }
  });

  function isInteger(str) {
    var c0 = str.charCodeAt(0);
    if (c0 >= 48 && c0 <= 57) return !/\D/.test(str);
    else return false;
  }

  var Obj = exports.Obj = function(proto, name) {
    if (!this.props) this.props = Object.create(null);
    this.proto = proto === true ? cx.protos.Object : proto;
    if (proto && proto != cx.protos.Object && !name && proto.name && !(this instanceof Fn)) {
      var match = /^(.*)\.prototype$/.exec(this.proto.name);
      if (match) name = match[1];
    }
    this.name = name;
    this.maybeProps = null;
    this.origin = cx.curOrigin;
  };
  Obj.prototype = extend(Type.prototype, {
    constructor: Obj,
    toString: function(maxDepth) {
      if (maxDepth == null) maxDepth = 0;
      if (maxDepth <= 0 && this.name) return this.name;
      var props = [], etc = false;
      for (var prop in this.props) if (prop != "<i>") {
        if (props.length > 5) { etc = true; break; }
        if (maxDepth)
          props.push(prop + ": " + toString(this.props[prop], maxDepth - 1, this));
        else
          props.push(prop);
      }
      props.sort();
      if (etc) props.push("...");
      return "{" + props.join(", ") + "}";
    },
    hasProp: function(prop, searchProto) {
      if (isInteger(prop)) prop = this.normalizeIntegerProp(prop);
      var found = this.props[prop];
      if (searchProto !== false)
        for (var p = this.proto; p && !found; p = p.proto) found = p.props[prop];
      return found;
    },
    defProp: function(prop, originNode) {
      var found = this.hasProp(prop, false);
      if (found) {
        if (originNode && !found.originNode) found.originNode = originNode;
        return found;
      }
      if (ignoredProp(prop)) return ANull;
      if (isInteger(prop)) prop = this.normalizeIntegerProp(prop);

      var av = this.maybeProps && this.maybeProps[prop];
      if (av) {
        delete this.maybeProps[prop];
        this.maybeUnregProtoPropHandler();
      } else {
        av = new AVal;
        av.propertyOf = this;
        av.propertyName = prop;
      }

      this.props[prop] = av;
      av.originNode = originNode;
      av.origin = cx.curOrigin;
      this.broadcastProp(prop, av, true);
      return av;
    },
    getProp: function(prop) {
      var found = this.hasProp(prop, true) || (this.maybeProps && this.maybeProps[prop]);
      if (found) return found;
      if (ignoredProp(prop)) return ANull;
      if (isInteger(prop)) prop = this.normalizeIntegerProp(prop);
      var av = this.ensureMaybeProps()[prop] = new AVal;
      av.propertyOf = this;
      av.propertyName = prop;
      return av;
    },
    normalizeIntegerProp: function(_) { return "<i>" },
    broadcastProp: function(prop, val, local) {
      if (local) {
        this.signal("addProp", prop, val);
        // If this is a scope, it shouldn't be registered
        if (!(this instanceof Scope)) registerProp(prop, this);
      }

      if (this.onNewProp) for (var i = 0; i < this.onNewProp.length; ++i) {
        var h = this.onNewProp[i];
        h.onProtoProp ? h.onProtoProp(prop, val, local) : h(prop, val, local);
      }
    },
    onProtoProp: function(prop, val, _local) {
      var maybe = this.maybeProps && this.maybeProps[prop];
      if (maybe) {
        delete this.maybeProps[prop];
        this.maybeUnregProtoPropHandler();
        this.proto.getProp(prop).propagate(maybe);
      }
      this.broadcastProp(prop, val, false);
    },
    replaceProto: function(proto) {
      for (var o = proto; o; o = o.proto)
        if (o == this) return;
      if (this.proto && this.maybeProps)
        this.proto.unregPropHandler(this);
      this.proto = proto;
      if (this.maybeProps)
        this.proto.forAllProps(this);
    },
    ensureMaybeProps: function() {
      if (!this.maybeProps) {
        if (this.proto) this.proto.forAllProps(this);
        this.maybeProps = Object.create(null);
      }
      return this.maybeProps;
    },
    removeProp: function(prop) {
      var av = this.props[prop];
      delete this.props[prop];
      this.ensureMaybeProps()[prop] = av;
      av.types.length = 0;
    },
    forAllProps: function(c) {
      if (!this.onNewProp) {
        this.onNewProp = [];
        if (this.proto) this.proto.forAllProps(this);
      }
      this.onNewProp.push(c);
      for (var o = this; o; o = o.proto) for (var prop in o.props) {
        if (c.onProtoProp)
          c.onProtoProp(prop, o.props[prop], o == this);
        else
          c(prop, o.props[prop], o == this);
      }
    },
    maybeUnregProtoPropHandler: function() {
      if (this.maybeProps) {
        for (var _n in this.maybeProps) return;
        this.maybeProps = null;
      }
      if (!this.proto || this.onNewProp && this.onNewProp.length) return;
      this.proto.unregPropHandler(this);
    },
    unregPropHandler: function(handler) {
      for (var i = 0; i < this.onNewProp.length; ++i)
        if (this.onNewProp[i] == handler) { this.onNewProp.splice(i, 1); break; }
      this.maybeUnregProtoPropHandler();
    },
    gatherProperties: function(f, depth) {
      for (var prop in this.props) if (prop != "<i>" && prop.charAt(0) != ":")
        f(prop, this, depth);
      if (this.proto) this.proto.gatherProperties(f, depth + 1);
    },
    getObjType: function() { return this; }
  });

  var geckoIterators = typeof StopIteration != "undefined";
  function ignoredProp(name) {
    return name == "__proto__" || name == "✖" || geckoIterators && name == "__iterator__";
  }

  var Fn = exports.Fn = function(name, self, args, argNames, retval, generator, async) {
    Obj.call(this, cx.protos.Function, name);
    this.self = self;
    this.args = args;
    this.argNames = argNames;
    this.retval = retval;
    this.generator = generator;
    this.async = async;
  };
  Fn.prototype = extend(Obj.prototype, {
    constructor: Fn,
    toString: function(maxDepth) {
      if (maxDepth == null) maxDepth = 0;
      var str = this.generator ? "fn*(" : "fn(";
      for (var i = 0; i < this.args.length; ++i) {
        if (i) str += ", ";
        var name = this.argNames[i];
        if (name && name != "?") str += name + ": ";
        str += maxDepth > -3 ? toString(this.args[i], maxDepth - 1, this) : "?";
      }
      str += ")";
      if (!this.retval.isEmpty())
        str += " -> " + (maxDepth > -3 ? toString(this.retval, maxDepth - 1, this) : "?");
      return str;
    },
    getProp: function(prop) {
      if (prop == "prototype") {
        var known = this.hasProp(prop, false);
        if (!known) {
          known = this.defProp(prop);
          var proto = new Obj(true, this.name && this.name + ".prototype");
          proto.origin = this.origin;
          known.addType(proto, WG_MADEUP_PROTO);
        }
        return known;
      }
      return Obj.prototype.getProp.call(this, prop);
    },
    defProp: function(prop, originNode) {
      if (prop == "prototype") {
        var found = this.hasProp(prop, false);
        if (found) return found;
        found = Obj.prototype.defProp.call(this, prop, originNode);
        found.origin = this.origin;
        found.propagate(new FnPrototype(this));
        return found;
      }
      return Obj.prototype.defProp.call(this, prop, originNode);
    },
    getFunctionType: function() { return this; },
    isArrowFn: function() { return this.originNode && this.originNode.type == "ArrowFunctionExpression" }
  });

  var Arr = exports.Arr = function(contentType) {
    Obj.call(this, cx.protos.Array);
    var content = this.defProp("<i>");
    if (Array.isArray(contentType)) {
      this.tuple = contentType.length;
      for (var i = 0; i < contentType.length; i++) {
        var prop = this.defProp(String(i));
        contentType[i].propagate(prop);
        prop.propagate(content);
      }
    } else if (contentType) {
      this.tuple = 0;
      contentType.propagate(content);
    }
  };
  Arr.prototype = extend(Obj.prototype, {
    constructor: Arr,
    toString: function(maxDepth) {
      if (maxDepth == null) maxDepth = 0;
      if (maxDepth <= -3) return "[?]";
      var content = "";
      if (this.tuple) {
        var similar;
        for (var i = 0; i in this.props; i++) {
          var type = toString(this.getProp(String(i)), maxDepth - 1, this);
          if (similar == null)
            similar = type;
          else if (similar != type)
            similar = false;
          else
            similar = type;
          content += (content ? ", " : "") + type;
        }
        if (similar) content = similar;
      } else {
        content = toString(this.getProp("<i>"), maxDepth - 1, this);
      }
      return "[" + content + "]";
    },
    normalizeIntegerProp: function(prop) {
      if (+prop < this.tuple) return prop;
      else return "<i>";
    }
  });

  var Sym = exports.Sym = function(name, originNode) {
    Prim.call(this, cx.protos.Symbol, "Symbol");
    this.symName = name;
    this.originNode = originNode;
  };
  Sym.prototype = extend(Prim.prototype, {
    constructor: Sym,
    asPropName: function() { return ":" + this.symName },
    getSymbolType: function() { return this }
  });

  exports.getSymbol = function(name, originNode) {
    var cleanName = name.replace(/[^\w$\.]/g, "_");
    var known = cx.symbols[cleanName];
    if (known) {
      if (originNode && !known.originNode) known.originNode = originNode;
      return known;
    }
    return cx.symbols[cleanName] = new Sym(cleanName, originNode);
  };

  // THE PROPERTY REGISTRY

  function registerProp(prop, obj) {
    var data = cx.props[prop] || (cx.props[prop] = []);
    data.push(obj);
  }

  function objsWithProp(prop) {
    return cx.props[prop];
  }

  // INFERENCE CONTEXT

  exports.Context = function(defs, parent) {
    this.parent = parent;
    this.props = Object.create(null);
    this.protos = Object.create(null);
    this.origins = [];
    this.curOrigin = "ecmascript";
    this.paths = Object.create(null);
    this.definitions = Object.create(null);
    this.purgeGen = 0;
    this.workList = null;
    this.disabledComputing = null;
    this.curSuperCtor = this.curSuper = null;
    this.symbols = Object.create(null);

    exports.withContext(this, function() {
      cx.protos.Object = new Obj(null, "Object.prototype");
      cx.topScope = new Scope();
      cx.topScope.name = "<top>";
      cx.protos.Array = new Obj(true, "Array.prototype");
      cx.protos.Function = new Fn("Function.prototype", ANull, [], [], ANull);
      cx.protos.Function.proto = cx.protos.Object;
      cx.protos.RegExp = new Obj(true, "RegExp.prototype");
      cx.protos.String = new Obj(true, "String.prototype");
      cx.protos.Number = new Obj(true, "Number.prototype");
      cx.protos.Boolean = new Obj(true, "Boolean.prototype");
      cx.protos.Symbol = new Obj(true, "Symbol.prototype");
      cx.str = new Prim(cx.protos.String, "string");
      cx.bool = new Prim(cx.protos.Boolean, "bool");
      cx.num = new Prim(cx.protos.Number, "number");
      cx.curOrigin = null;

      if (defs) for (var i = 0; i < defs.length; ++i)
        def.load(defs[i]);
    });
  };

  exports.Context.prototype.startAnalysis = function() {
    this.disabledComputing = this.workList = this.curSuperCtor = this.curSuper = null;
  };

  var cx = null;
  exports.cx = function() { return cx; };

  exports.withContext = function(context, f) {
    var old = cx;
    cx = context;
    try { return f(); }
    finally { cx = old; }
  };

  exports.TimedOut = function() {
    this.message = "Timed out";
    this.stack = (new Error()).stack;
  };
  exports.TimedOut.prototype = Object.create(Error.prototype);
  exports.TimedOut.prototype.name = "infer.TimedOut";

  var timeout;
  exports.withTimeout = function(ms, f) {
    var end = +new Date + ms;
    var oldEnd = timeout;
    if (oldEnd && oldEnd < end) return f();
    timeout = end;
    try { return f(); }
    finally { timeout = oldEnd; }
  };

  exports.addOrigin = function(origin) {
    if (cx.origins.indexOf(origin) < 0) cx.origins.push(origin);
  };

  var baseMaxWorkDepth = 20, reduceMaxWorkDepth = 0.0001;
  function withWorklist(f) {
    if (cx.workList) return f(cx.workList);

    var list = [], depth = 0;
    var add = cx.workList = function(type, target, weight) {
      if (depth < baseMaxWorkDepth - reduceMaxWorkDepth * list.length)
        list.push(type, target, weight, depth);
    };
    var ret = f(add);
    for (var i = 0; i < list.length; i += 4) {
      if (timeout && +new Date >= timeout)
        throw new exports.TimedOut();
      depth = list[i + 3] + 1;
      list[i + 1].addType(list[i], list[i + 2]);
    }
    cx.workList = null;
    return ret;
  }

  function withSuper(ctor, obj, f) {
    var oldCtor = cx.curSuperCtor, oldObj = cx.curSuper;
    cx.curSuperCtor = ctor; cx.curSuper = obj;
    var result = f();
    cx.curSuperCtor = oldCtor; cx.curSuper = oldObj;
    return result;
  }

  // SCOPES

  var Scope = exports.Scope = function(prev, originNode, isBlock, isCatch) {
    Obj.call(this, prev || true);
    this.prev = prev;
    this.originNode = originNode;
    this.isBlock = !!isBlock;
    this.isCatch = !!isCatch;
  };
  Scope.prototype = extend(Obj.prototype, {
    constructor: Scope,
    defVar: function(name, originNode) {
      for (var s = this; ; s = s.proto) {
        var found = s.props[name];
        if (found) return found;
        if (!s.prev) return s.defProp(name, originNode);
      }
    }
  });

  function functionScope(scope, arrow) {
    while (scope.isBlock || scope.isCatch || (arrow === false && scope.fnType && scope.fnType.isArrowFn()))
      scope = scope.prev;
    return scope;
  }


  // RETVAL COMPUTATION HEURISTICS

  function maybeInstantiate(scope, score) {
    var fn = functionScope(scope).fnType;
    if (fn) fn.instantiateScore = (fn.instantiateScore || 0) + score;
  }

  var NotSmaller = {};
  function nodeSmallerThan(node, n) {
    try {
      walk.simple(node, {Expression: function() { if (--n <= 0) throw NotSmaller; }});
      return true;
    } catch(e) {
      if (e == NotSmaller) return false;
      throw e;
    }
  }

  function maybeTagAsInstantiated(node, fn) {
    var score = fn.instantiateScore;
    if (!cx.disabledComputing && score && fn.args.length && nodeSmallerThan(node, score * 5)) {
      maybeInstantiate(functionScope(fn.originNode.scope.prev), score / 2);
      setFunctionInstantiated(node, fn);
      return true;
    } else {
      fn.instantiateScore = null;
    }
  }

  function setFunctionInstantiated(node, fn) {
    // Disconnect the arg avals, so that we can add info to them without side effects
    var refScope = node.scope;
    for (var i = 0; i < fn.args.length; ++i) fn.args[i] = new AVal;
    fn.self = new AVal;
    fn.computeRet = function(self, args) {
      // Prevent recursion
      return withDisabledComputing(fn, function() {
        var oldOrigin = cx.curOrigin;
        cx.curOrigin = fn.origin;
        var scope = node.scope ? node.scope : refScope;
        var scopeCopy = new Scope(scope.prev, scope.originNode);
        for (var v in scope.props) {
          var local = scopeCopy.defProp(v, scope.props[v].originNode);
          for (var i = 0; i < args.length; ++i) if (fn.argNames[i] == v && i < args.length)
            args[i].propagate(local);
        }
        var argNames = fn.argNames.length != args.length ? fn.argNames.slice(0, args.length) : fn.argNames;
        while (argNames.length < args.length) argNames.push("?");
        scopeCopy.fnType = new Fn(fn.name, self, args, argNames, ANull, fn.generator, fn.async);
        scopeCopy.fnType.originNode = fn.originNode;
        if (fn.arguments) {
          var argset = scopeCopy.fnType.arguments = new AVal;
          scopeCopy.defProp("arguments").addType(new Arr(argset));
          for (var i = 0; i < args.length; ++i) args[i].propagate(argset);
        }
        node.scope = scopeCopy;
        walk.recursive(node.body, scopeCopy, null, scopeGatherer);
        walk.recursive(node.body, scopeCopy, null, inferWrapper);
        cx.curOrigin = oldOrigin;
        return scopeCopy.fnType.retval;
      });
    };
  }

  function maybeTagAsGeneric(fn) {
    var target = fn.retval;
    if (target == ANull || fn.isArrowFn()) return;
    var targetInner, asArray;
    if (!target.isEmpty() && (targetInner = target.getType()) instanceof Arr)
      target = asArray = targetInner.getProp("<i>");

    function explore(aval, path, depth) {
      if (depth > 3 || !aval.forward) return;
      for (var i = 0; i < aval.forward.length; ++i) {
        var prop = aval.forward[i].propagatesTo();
        if (!prop) continue;
        var newPath = path, dest;
        if (prop instanceof AVal) {
          dest = prop;
        } else if (prop.target instanceof AVal) {
          newPath += prop.pathExt;
          dest = prop.target;
        } else continue;
        if (dest == target) return newPath;
        var found = explore(dest, newPath, depth + 1);
        if (found) return found;
      }
    }

    var foundPath = explore(fn.self, "!this", 0);
    for (var i = 0; !foundPath && i < fn.args.length; ++i)
      foundPath = explore(fn.args[i], "!" + i, 0);

    if (foundPath) {
      if (asArray) foundPath = "[" + foundPath + "]";
      var p = new def.TypeParser(foundPath);
      var parsed = p.parseType(true);
      fn.computeRet = parsed.apply ? parsed : function() { return parsed; };
      fn.computeRetSource = foundPath;
      return true;
    }
  }

  // SCOPE GATHERING PASS

  function addVar(scope, nameNode) {
    return scope.defProp(nameNode.name, nameNode);
  }
  function patternName(node) {
    if (node.type == "Identifier") return node.name;
    if (node.type == "AssignmentPattern") return patternName(node.left);
    if (node.type == "ObjectPattern") return "{" + node.properties.map(function(e) { return patternName(e.type === 'RestElement' ? e : e.value) }).join(", ") + "}";
    if (node.type == "ArrayPattern") return "[" + node.elements.map(function(e) { return e ? patternName(e) : "" }).join(", ") + "]";
    if (node.type == "RestElement") return "..." + patternName(node.argument);
    return "_";
  }

  function isBlockScopedDecl(node) {
    return node.type == "VariableDeclaration" && node.kind != "var" ||
      node.type == "FunctionDeclaration" ||
      node.type == "ClassDeclaration";
  }

  function patternScopes(inner, outer) {
    return {inner: inner, outer: outer || inner};
  }

  var scopeGatherer = exports.scopeGatherer = walk.make({
    VariablePattern: function(node, scopes) {
      if (scopes.inner) addVar(scopes.inner, node);
    },
    AssignmentPattern: function(node, scopes, c) {
      c(node.left, scopes, "Pattern");
      c(node.right, scopes.outer, "Expression");
    },
    AssignmentExpression: function(node, scope, c) {
      if (node.left.type == "MemberExpression")
        c(node.left, scope, "Expression");
      else
        c(node.left, patternScopes(false, scope), "Pattern");
      c(node.right, scope, "Expression");
    },
    MemberPattern: function(node, scope, c) {
      c(node, scope.outer);
    },
    Function: function(node, scope, c) {
      var inner = node.scope = new Scope(scope, node);
      var argVals = [], argNames = [];
      for (var i = 0; i < node.params.length; ++i) {
        var param = node.params[i];
        argNames.push(patternName(param));
        if (param.type == "Identifier") {
          argVals.push(addVar(inner, param));
        } else {
          var arg = new AVal;
          argVals.push(arg);
          arg.originNode = param;
          c(param, patternScopes(inner), "Pattern");
        }
      }
      inner.fnType = new Fn(node.id && node.id.name, new AVal, argVals, argNames, ANull, node.generator, node.async);
      inner.fnType.originNode = node;
      if (node.id) {
        var decl = node.type == "FunctionDeclaration";
        addVar(decl ? scope : inner, node.id);
      }
      c(node.body, inner, node.expression ? "Expression" : "Statement");
    },
    BlockStatement: function(node, scope, c) {
      if (!node.scope && node.body.some(isBlockScopedDecl))
        scope = node.scope = new Scope(scope, node, true);
      walk.base.BlockStatement(node, scope, c);
    },
    CatchClause: function(node, scope, c) {
      if (!node.param) { return; }
      scope = node.scope = new Scope(scope, node, false, true);
      if (node.param.type == "Identifier") {
        var v = addVar(scope, node.param);
        c(node.body, scope, "Statement");
        var ecma = cx.definitions.ecmascript;
        if (ecma && v.isEmpty()) getInstance(ecma["Error.prototype"]).propagate(v, WG_CATCH_ERROR);
      } else {
        c(node.param, patternScopes(scope), "Pattern");
      }
    },
    VariableDeclaration: function(node, scope, c) {
      var targetScope = node.kind == "var" ? functionScope(scope) : scope;
      for (var i = 0; i < node.declarations.length; ++i) {
        var decl = node.declarations[i];
        c(decl.id, patternScopes(targetScope, scope), "Pattern");
        if (decl.init) c(decl.init, scope, "Expression");
      }
    },
    ClassDeclaration: function(node, scope, c) {
      if (node.id) addVar(scope, node.id);
      if (node.superClass) c(node.superClass, scope, "Expression");
      for (var i = 0; i < node.body.body.length; i++)
        c(node.body.body[i], scope);
    },
    ForInStatement: function(node, scope, c) {
      if (!node.scope && isBlockScopedDecl(node.left))
        scope = node.scope = new Scope(scope, node, true);
      walk.base.ForInStatement(node, scope, c);
    },
    ForStatement: function(node, scope, c) {
      if (!node.scope && node.init && isBlockScopedDecl(node.init))
        scope = node.scope = new Scope(scope, node, true);
      walk.base.ForStatement(node, scope, c);
    },
    ImportDeclaration: function(node, scope) {
      for (var i = 0; i < node.specifiers.length; i++)
        addVar(scope, node.specifiers[i].local);
    }
  });
  scopeGatherer.ForOfStatement = scopeGatherer.ForInStatement;

  function rmScope(node) { if (node.scope) node.scope = null }
  var scopeClearer = {BlockStatement: rmScope, Function: rmScope, CatchClause: rmScope,
                      ForInStateMent: rmScope, ForStatement: rmScope};
  exports.clearScopes = function(ast) {
    walk.simple(ast, scopeClearer);
  };

  // CONSTRAINT GATHERING PASS

  var propName = exports.propName = function(node, inferInScope) {
    var key = node.property || node.key;
    if (!node.computed && key.type == "Identifier") return key.name;
    if (key.type == "Literal") {
      if (typeof key.value == "string") return key.value;
      if (typeof key.value == "number") return String(key.value);
    }
    if (inferInScope) {
      var symName = symbolName(infer(key, inferInScope));
      if (symName) return node.propName = symName;
    } else if (node.propName) {
      return node.propName;
    }
    return "<i>";
  };
  function symbolName(val) {
    var sym = val.getSymbolType();
    if (sym) return sym.asPropName();
  }

  function unopResultType(op) {
    switch (op) {
    case "+": case "-": case "~": return cx.num;
    case "!": return cx.bool;
    case "typeof": return cx.str;
    case "void": case "delete": return ANull;
    }
  }
  function binopIsBoolean(op) {
    switch (op) {
    case "==": case "!=": case "===": case "!==": case "<": case ">": case ">=": case "<=":
    case "in": case "instanceof": return true;
    }
  }
  function literalType(node) {
    if (node.regex) return getInstance(cx.protos.RegExp);
    switch (typeof node.value) {
    case "boolean": return cx.bool;
    case "number": return cx.num;
    case "string": return cx.str;
    case "object":
    case "function":
      if (!node.value) return ANull;
      return getInstance(cx.protos.RegExp);
    }
  }

  function join(a, b) {
    if (a == b || b == ANull) return a;
    if (a == ANull) return b;
    var joined = new AVal;
    a.propagate(joined);
    b.propagate(joined);
    return joined;
  }

  function connectParams(node, scope) {
    for (var i = 0; i < node.params.length; i++) {
      var param = node.params[i];
      if (param.type == "Identifier") continue;
      connectPattern(param, scope, node.scope.fnType.args[i]);
    }
  }

  function ensureVar(node, scope) {
    return scope.hasProp(node.name) || cx.topScope.defProp(node.name, node);
  }

  var inferPatternVisitor = exports.inferPatternVisitor = {
    Identifier: function(node, scope, source) {
      source.propagate(ensureVar(node, scope));
    },
    MemberExpression: function(node, scope, source) {
      var obj = infer(node.object, scope);
      var pName = propName(node, scope);
      obj.propagate(new DefProp(pName, source, node.property));
    },
    RestElement: function(node, scope, source) {
      connectPattern(node.argument, scope, new Arr(source));
    },
    ObjectPattern: function(node, scope, source) {
      for (var i = 0; i < node.properties.length; ++i) {
        var prop = node.properties[i];
        if (prop.type == 'RestElement') { continue; }
        connectPattern(prop.value, scope, source.getProp(propName(prop)));
      }
    },
    ArrayPattern: function(node, scope, source) {
      for (var i = 0; i < node.elements.length; i++)
        if (node.elements[i])
          connectPattern(node.elements[i], scope, source.getProp(String(i)));
    },
    AssignmentPattern: function(node, scope, source) {
      connectPattern(node.left, scope, join(source, infer(node.right, scope)));
    }
  };

  function connectPattern(node, scope, source) {
    var connecter = inferPatternVisitor[node.type];
    if (connecter) connecter(node, scope, source);
  }

  function getThis(scope) {
    var fnScope = functionScope(scope);
    return fnScope.fnType ? fnScope.fnType.self : fnScope;
  }

  function maybeAddPhantomObj(obj) {
    if (!obj.isEmpty() || !obj.propertyOf) return;
    obj.propertyOf.getProp(obj.propertyName).addType(new Obj, WG_PHANTOM_OBJ);
    maybeAddPhantomObj(obj.propertyOf);
  }

  function inferClass(node, scope, name) {
    if (!name && node.id) name = node.id.name;

    var sup = cx.protos.Object, supCtor, delayed;
    if (node.superClass) {
      if (node.superClass.type == "Literal" && node.superClass.value == null) {
        sup = null;
      } else {
        var supVal = infer(node.superClass, scope), supProto;
        supCtor = supVal.getFunctionType();
        if (supCtor && (supProto = supCtor.getProp("prototype").getObjType())) {
          sup = supProto;
        } else {
          supCtor = supVal;
          delayed = supVal.getProp("prototype");
        }
      }
    }
    var proto = new Obj(sup, name && name + ".prototype");
    if (delayed) delayed.propagate(new HasProto(proto));

    return withSuper(supCtor, delayed || sup, function() {
      var ctor, body = node.body.body;
      for (var i = 0; i < body.length; i++)
        if (body[i].kind == "constructor") ctor = body[i].value;
      var fn = node.objType = ctor ? infer(ctor, scope) : new Fn(name, ANull, [], null, ANull);
      fn.originNode = node.id || ctor || node;

      var inst = getInstance(proto, fn);
      fn.self.addType(inst);
      fn.defProp("prototype", node).addType(proto);
      for (var i = 0; i < body.length; i++) {
        var method = body[i], target;
        if (method.kind == "constructor") continue;
        var pName = propName(method, scope);
        if (pName == "<i>" || method.kind == "set") {
          target = ANull;
        } else {
          target = (method.static ? fn : proto).defProp(pName, method.key);
          target.initializer = true;
          if (method.kind == "get") target = new IsCallee(inst, [], null, target);
        }
        infer(method.value, scope, target);
        var methodFn = target.getFunctionType();
        if (methodFn) methodFn.self.addType(inst);
      }
      return fn;
    });
  }

  function arrayLiteralType(elements, scope, inner) {
    var tuple = elements.length > 1 && elements.length < 6;
    if (tuple) {
      var homogenous = true, litType;
      for (var i = 0; i < elements.length; i++) {
        var elt = elements[i];
        if (!elt)
          tuple = false;
        else if (elt.type != "Literal" || (litType && litType != typeof elt.value))
          homogenous = false;
        else
          litType = typeof elt.value;
      }
      if (homogenous) tuple = false;
    }

    if (tuple) {
      var types = [];
      for (var i = 0; i < elements.length; ++i)
        types.push(inner(elements[i], scope));
      return new Arr(types);
    } else if (elements.length < 2) {
      return new Arr(elements[0] && inner(elements[0], scope));
    } else {
      var eltVal = new AVal;
      for (var i = 0; i < elements.length; i++)
        if (elements[i]) inner(elements[i], scope).propagate(eltVal);
      return new Arr(eltVal);
    }
  }

  function ret(f) {
    return function(node, scope, out, name) {
      var r = f(node, scope, name);
      if (out) r.propagate(out);
      return r;
    };
  }
  function fill(f) {
    return function(node, scope, out, name) {
      if (!out) out = new AVal;
      f(node, scope, out, name);
      return out;
    };
  }

  var inferExprVisitor = exports.inferExprVisitor = {
    ArrayExpression: ret(function(node, scope) {
      return arrayLiteralType(node.elements, scope, infer);
    }),
    ObjectExpression: ret(function(node, scope, name) {
      var proto = cx.protos.Object, waitForProto;
      for (var i = 0; i < node.properties.length; ++i) {
        var prop = node.properties[i];
        if (prop.type == 'SpreadElement') { continue; }
        if (prop.key.name == "__proto__") {
          if (prop.value.type == "Literal" && prop.value.value == null) {
            proto = null;
          } else {
            var protoVal = infer(prop.value, scope), known = protoVal.getObjType();
            if (known) proto = known;
            else waitForProto = protoVal;
          }
        }
      }

      var obj = node.objType = new Obj(proto, name);
      if (waitForProto) waitForProto.propagate(new HasProto(obj));
      obj.originNode = node;

      withSuper(null, waitForProto || proto, function() {
        for (var i = 0; i < node.properties.length; ++i) {
          var prop = node.properties[i], key = prop.key;
          if (prop.type == 'SpreadElement' || ignoredProp(prop.key.name)) continue;

          var name = propName(prop, scope), target;
          if (name == "<i>" || prop.kind == "set") {
            target = ANull;
          } else {
            target = obj.defProp(name, key);
            var val = target;
            val.initializer = true;
            if (prop.kind == "get")
              target = new IsCallee(obj, [], null, val);
          }
          infer(prop.value, scope, target, name);
          if (prop.value.type == "FunctionExpression")
            prop.value.scope.fnType.self.addType(obj, WG_SPECULATIVE_THIS);
        }
      });
      return obj;
    }),
    FunctionExpression: ret(function(node, scope, name) {
      var inner = node.scope, fn = inner.fnType;
      if (name && !fn.name) fn.name = name;
      connectParams(node, inner);
      if (node.expression)
        infer(node.body, inner, inner.fnType.retval = new AVal);
      else
        walk.recursive(node.body, inner, null, inferWrapper, "Statement");
      if (node.type == "ArrowFunctionExpression")
        getThis(scope).propagate(fn.self);
      maybeTagAsInstantiated(node, fn) || maybeTagAsGeneric(fn);
      if (node.id) inner.getProp(node.id.name).addType(fn);
      return fn;
    }),
    ClassExpression: ret(inferClass),
    SequenceExpression: ret(function(node, scope) {
      for (var i = 0, l = node.expressions.length - 1; i < l; ++i)
        infer(node.expressions[i], scope, ANull);
      return infer(node.expressions[l], scope);
    }),
    UnaryExpression: ret(function(node, scope) {
      infer(node.argument, scope, ANull);
      return unopResultType(node.operator);
    }),
    UpdateExpression: ret(function(node, scope) {
      infer(node.argument, scope, ANull);
      return cx.num;
    }),
    BinaryExpression: ret(function(node, scope) {
      if (node.operator == "+") {
        var lhs = infer(node.left, scope);
        var rhs = infer(node.right, scope);
        if (lhs.hasType(cx.str) || rhs.hasType(cx.str)) return cx.str;
        if (lhs.hasType(cx.num) && rhs.hasType(cx.num)) return cx.num;
        var result = new AVal;
        lhs.propagate(new IsAdded(rhs, result));
        rhs.propagate(new IsAdded(lhs, result));
        return result;
      } else {
        infer(node.left, scope, ANull);
        infer(node.right, scope, ANull);
        return binopIsBoolean(node.operator) ? cx.bool : cx.num;
      }
    }),
    AssignmentExpression: ret(function(node, scope, name) {
      var rhs, pName;
      if (node.left.type == "MemberExpression") {
        pName = propName(node.left, scope);
        if (!name)
          name = node.left.object.type == "Identifier" ? node.left.object.name + "." + pName : pName;
      } else if (!name && node.left.type == "Identifier") {
        name = node.left.name;
      }

      if (node.operator && node.operator != "=" && node.operator != "+=") {
        infer(node.right, scope, ANull);
        rhs = cx.num;
      } else {
        rhs = infer(node.right, scope, null, name);
      }

      if (node.left.type == "MemberExpression") {
        var obj = infer(node.left.object, scope);
        if (pName == "prototype") maybeInstantiate(scope, 20);
        if (pName == "<i>") {
          // This is a hack to recognize for/in loops that copy
          // properties, and do the copying ourselves, insofar as we
          // manage, because such loops tend to be relevant for type
          // information.
          var v = node.left.property.name, local = scope.props[v], over = local && local.iteratesOver;
          if (over) {
            maybeInstantiate(scope, 20);
            var fromRight = node.right.type == "MemberExpression" && node.right.computed && node.right.property.name == v;
            over.forAllProps(function(prop, val, local) {
              if (local && prop != "prototype" && prop != "<i>")
                obj.propagate(new DefProp(prop, fromRight ? val : ANull));
            });
            return rhs;
          }
        }

        obj.propagate(new DefProp(pName, rhs, node.left.property));
        maybeAddPhantomObj(obj);
        if (node.right.type == "FunctionExpression")
          obj.propagate(node.right.scope.fnType.self, WG_SPECULATIVE_THIS);
      } else {
        connectPattern(node.left, scope, rhs);
      }
      return rhs;
    }),
    LogicalExpression: fill(function(node, scope, out) {
      infer(node.left, scope, out);
      infer(node.right, scope, out);
    }),
    ConditionalExpression: fill(function(node, scope, out) {
      infer(node.test, scope, ANull);
      infer(node.consequent, scope, out);
      infer(node.alternate, scope, out);
    }),
    NewExpression: fill(function(node, scope, out, name) {
      if (node.callee.type == "Identifier" && node.callee.name in scope.props)
        maybeInstantiate(scope, 20);

      for (var i = 0, args = []; i < node.arguments.length; ++i)
        args.push(infer(node.arguments[i], scope));
      var callee = infer(node.callee, scope);
      var self = new AVal;
      callee.propagate(new IsCtor(self, name && /\.prototype$/.test(name)));
      self.propagate(out, WG_NEW_INSTANCE);
      callee.propagate(new IsCallee(self, args, node.arguments, new IfObj(out)));
    }),
    CallExpression: fill(function(node, scope, out) {
      for (var i = 0, args = []; i < node.arguments.length; ++i)
        args.push(infer(node.arguments[i], scope));
      var outerFn = functionScope(scope).fnType;
      if (node.callee.type == "MemberExpression") {
        var self = infer(node.callee.object, scope);
        var pName = propName(node.callee, scope);
        if (outerFn && (pName == "call" || pName == "apply") &&
            outerFn.args.indexOf(self) > -1)
          maybeInstantiate(scope, 30);
        self.propagate(new HasMethodCall(pName, args, node.arguments, out));
      } else if (node.callee.type == "Super" && cx.curSuperCtor) {
        node.callee.superType = cx.curSuperCtor;
        cx.curSuperCtor.propagate(new IsCallee(getThis(scope), args, node.arguments, out));
        getThis(scope).propagate(out, WG_NEW_INSTANCE);
      } else {
        var callee = infer(node.callee, scope);
        if (outerFn && outerFn.args.indexOf(callee) > -1)
          maybeInstantiate(scope, 30);
        var knownFn = callee.getFunctionType();
        if (knownFn && knownFn.instantiateScore && outerFn)
          maybeInstantiate(scope, knownFn.instantiateScore / 5);
        callee.propagate(new IsCallee(cx.topScope, args, node.arguments, out));
      }
    }),
    AwaitExpression: fill(function(node, scope, out, name) {
      var arg = infer(node.argument, scope, null, name);
      var tp = arg.getType();
      if (tp && tp.constructor == Obj && tp.name == "Promise") {
        if (tp.hasProp(":t")) {
          tp.getProp(":t").propagate(out);
        }
      } else {
        arg.propagate(out);
      }
    }),
    MemberExpression: fill(function(node, scope, out) {
      var name = propName(node), wg;
      if (name == "<i>") {
        var propType = infer(node.property, scope);
        var symName = symbolName(propType);
        if (symName)
          name = node.propName = symName;
        else if (!propType.hasType(cx.num))
          wg = WG_MULTI_MEMBER;
      }
      infer(node.object, scope).getProp(name).propagate(out, wg);
    }),
    Identifier: ret(function(node, scope) {
      if (node.name == "arguments") {
        var fnScope = functionScope(scope, false);
        if (fnScope.fnType && !(node.name in fnScope.props))
          fnScope.defProp(node.name, fnScope.fnType.originNode)
            .addType(new Arr(fnScope.fnType.arguments = new AVal));
      }
      return scope.getProp(node.name);
    }),
    ThisExpression: ret(function(_node, scope) {
      return getThis(scope);
    }),
    Super: ret(function(node) {
      return node.superType = cx.curSuper || ANull;
    }),
    Literal: ret(function(node) {
      return literalType(node);
    }),
    TemplateLiteral: ret(function(node, scope) {
      for (var i = 0; i < node.expressions.length; ++i)
        infer(node.expressions[i], scope, ANull);
      return cx.str;
    }),
    TaggedTemplateExpression: fill(function(node, scope, out) {
      var args = [new Arr(cx.str)];
      for (var i = 0; i < node.quasi.expressions.length; ++i)
        args.push(infer(node.quasi.expressions[i], scope));
      infer(node.tag, scope, new IsCallee(cx.topScope, args, node.quasi.expressions, out));
    }),
    YieldExpression: ret(function(node, scope) {
      var output = ANull, fn = functionScope(scope).fnType;
      if (fn) {
        if (fn.retval == ANull) fn.retval = new AVal;
        if (!fn.yieldval) fn.yieldval = new AVal;
        output = fn.retval;
      }
      if (node.argument) {
        if (node.delegate) {
          infer(node.argument, scope, new HasMethodCall("next", [], null,
                                                        new GetProp("value", output)));
        } else {
          infer(node.argument, scope, output);
        }
      }
      return fn ? fn.yieldval : ANull;
    })
  };
  inferExprVisitor.ArrowFunctionExpression = inferExprVisitor.FunctionExpression;

  function infer(node, scope, out, name) {
    var handler = inferExprVisitor[node.type];
    return handler ? handler(node, scope, out, name) : ANull;
  }

  function loopPattern(init) {
    return init.type == "VariableDeclaration" ? init.declarations[0].id : init;
  }

  var inferWrapper = exports.inferWrapper = walk.make({
    Expression: function(node, scope) {
      infer(node, node.scope || scope, ANull);
    },

    ObjectExpression: function(node, scope) {
      infer(node, node.scope || scope, ANull);
    },

    FunctionDeclaration: function(node, scope, c) {
      var inner = node.scope, fn = inner.fnType;
      connectParams(node, inner);
      c(node.body, inner, "Statement");
      maybeTagAsInstantiated(node, fn) || maybeTagAsGeneric(fn);
      if (node.id) scope.getProp(node.id.name).addType(fn);
    },

    Statement: function(node, scope, c) {
      c(node, node.scope || scope);
    },

    ExportDefaultDeclaration: function(node, scope, c) {
      c(node.declaration, node.scope || scope);
    },

    VariableDeclaration: function(node, scope) {
      for (var i = 0; i < node.declarations.length; ++i) {
        var decl = node.declarations[i];
        if (decl.id.type == "Identifier") {
          var prop = scope.getProp(decl.id.name);
          if (decl.init)
            infer(decl.init, scope, prop, decl.id.name);
        } else if (decl.init) {
          connectPattern(decl.id, scope, infer(decl.init, scope));
        }
      }
    },

    ClassDeclaration: function(node, scope) {
      if (!node.id) inferClass(node, scope);
      else scope.getProp(node.id.name).addType(inferClass(node, scope, node.id.name));
    },

    ReturnStatement: function(node, scope) {
      if (!node.argument) return;
      var output = ANull, fn = functionScope(scope).fnType;
      if (fn) {
        if (fn.retval == ANull) fn.retval = new AVal;
        output = fn.retval;
      }
      infer(node.argument, scope, output);
    },

    ForInStatement: function(node, scope, c) {
      var source = infer(node.right, scope);
      if ((node.right.type == "Identifier" && node.right.name in scope.props) ||
          (node.right.type == "MemberExpression" && node.right.property.name == "prototype")) {
        maybeInstantiate(scope, 5);
        var pattern = loopPattern(node.left);
        if (pattern.type == "Identifier") {
          if (pattern.name in scope.props)
            scope.getProp(pattern.name).iteratesOver = source;
          source.getProp("<i>").propagate(ensureVar(pattern, scope));
        } else {
          connectPattern(pattern, scope, source.getProp("<i>"));
        }
      }
      c(node.body, scope, "Statement");
    },

    ForOfStatement: function(node, scope, c) {
      var pattern = loopPattern(node.left), target;
      if (pattern.type == "Identifier")
        target = ensureVar(pattern, scope);
      else
        connectPattern(pattern, scope, target = new AVal);

      if (node.await) {
        infer(node.right, scope, new HasMethodCall(":Symbol.asyncIterator", [], null,
                                                   new HasMethodCall("next", [], null,
                                                                     new GetProp(":t",
                                                                                 new GetProp("value", target)))));
      } else {
        infer(node.right, scope, new HasMethodCall(":Symbol.iterator", [], null,
                                                   new HasMethodCall("next", [], null,
                                                                     new GetProp("value", target))));
      }
      c(node.body, scope, "Statement");
    }
  });

  // PARSING

  var parse = exports.parse = function(text, options, thirdArg) {
    if (!options || Array.isArray(options)) options = thirdArg;
    var ast;
    try { ast = acorn.parse(text, options); }
    catch(e) { ast = acorn_loose.parse(text, options); }
    return ast;
  };

  // ANALYSIS INTERFACE

  exports.analyze = function(ast, name, scope) {
    if (typeof ast == "string") ast = parse(ast);

    if (!name) name = "file#" + cx.origins.length;
    exports.addOrigin(cx.curOrigin = name);

    if (!scope) scope = cx.topScope;
    cx.startAnalysis();

    walk.recursive(ast, scope, null, scopeGatherer);
    if (cx.parent) cx.parent.signal("preInfer", ast, scope);
    walk.recursive(ast, scope, null, inferWrapper);
    if (cx.parent) cx.parent.signal("postInfer", ast, scope);

    cx.curOrigin = null;
  };

  // PURGING

  exports.purge = function(origins, start, end) {
    var test = makePredicate(origins, start, end);
    ++cx.purgeGen;
    cx.topScope.purge(test);
    for (var prop in cx.props) {
      var list = cx.props[prop];
      for (var i = 0; i < list.length; ++i) {
        var obj = list[i], av = obj.props[prop];
        if (!av || test(av, av.originNode)) list.splice(i--, 1);
      }
      if (!list.length) delete cx.props[prop];
    }
  };

  function makePredicate(origins, start, end) {
    var arr = Array.isArray(origins);
    if (arr && origins.length == 1) { origins = origins[0]; arr = false; }
    if (arr) {
      if (end == null) return function(n) { return origins.indexOf(n.origin) > -1; };
      return function(n, pos) { return pos && pos.start >= start && pos.end <= end && origins.indexOf(n.origin) > -1; };
    } else {
      if (end == null) return function(n) { return n.origin == origins; };
      return function(n, pos) { return pos && pos.start >= start && pos.end <= end && n.origin == origins; };
    }
  }

  AVal.prototype.purge = function(test) {
    if (this.purgeGen == cx.purgeGen) return;
    this.purgeGen = cx.purgeGen;
    for (var i = 0; i < this.types.length; ++i) {
      var type = this.types[i];
      if (test(type, type.originNode))
        this.types.splice(i--, 1);
      else
        type.purge(test);
    }
    if (!this.types.length) this.maxWeight = 0;

    if (this.forward) for (var i = 0; i < this.forward.length; ++i) {
      var f = this.forward[i];
      if (test(f)) {
        this.forward.splice(i--, 1);
        if (this.props) this.props = null;
      } else if (f.purge) {
        f.purge(test);
      }
    }
  };
  ANull.purge = function() {};
  Obj.prototype.purge = function(test) {
    if (this.purgeGen == cx.purgeGen) return true;
    this.purgeGen = cx.purgeGen;
    for (var p in this.props) {
      var av = this.props[p];
      if (test(av, av.originNode))
        this.removeProp(p);
      av.purge(test);
    }
  };
  Fn.prototype.purge = function(test) {
    if (Obj.prototype.purge.call(this, test)) return;
    this.self.purge(test);
    this.retval.purge(test);
    for (var i = 0; i < this.args.length; ++i) this.args[i].purge(test);
  };

  // EXPRESSION TYPE DETERMINATION

  function findByPropertyName(name) {
    guessing = true;
    var found = objsWithProp(name);
    if (found) for (var i = 0; i < found.length; ++i) {
      var val = found[i].getProp(name);
      if (!val.isEmpty()) return val;
    }
    return ANull;
  }

  function generatorResult(input, output, async) {
    var defs = cx.definitions.ecmascript;
    var valObj = new Obj(true);
    valObj.defProp("done").addType(cx.bool);
    output.propagate(valObj.defProp("value"));
    var retObj = valObj;
    if (async && defs) {
      retObj = new Obj(defs["Promise.prototype"]);
      retObj.getType().propagate(new DefProp(':t', valObj));
    }
    var method = new Fn(null, ANull, input ? [input] : [], input ? ["?"] : [], retObj);
    var result = new Obj(defs ? async ? defs.async_generator_prototype : defs.generator_prototype : true);
    result.defProp("next").addType(method);
    return result;
  }

  function maybeIterator(fn, output) {
    if (!fn.generator) return output;
    if (!fn.computeRet) { // Reuse iterator objects for non-computed return types
      if (fn.generator === true) fn.generator = generatorResult(fn.yieldval, output, fn.async);
      return fn.generator;
    }
    return generatorResult(fn.yieldval, output, fn.async);
  }

  function computeReturnType(funcNode, argNodes, scope) {
    var fn = findType(funcNode, scope).getFunctionType();
    if (!fn) return ANull;
    var result = fn.retval;
    if (fn.computeRet) {
      for (var i = 0, args = []; i < argNodes.length; ++i)
        args.push(findType(argNodes[i], scope));
      var self = ANull;
      if (funcNode.type == "MemberExpression")
        self = findType(funcNode.object, scope);
      result = fn.computeRet(self, args, argNodes);
    }
    return maybeIterator(fn, result);
  }

  var typeFinder = exports.typeFinder = {
    ArrayExpression: function(node, scope) {
      return arrayLiteralType(node.elements, scope, findType);
    },
    ObjectExpression: function(node) {
      return node.objType;
    },
    ClassDeclaration: function(node) {
      return node.objType;
    },
    ClassExpression: function(node) {
      return node.objType;
    },
    FunctionDeclaration: function(node) {
      return node.scope.fnType;
    },
    FunctionExpression: function(node) {
      return node.scope.fnType;
    },
    ArrowFunctionExpression: function(node) {
      return node.scope.fnType;
    },
    SequenceExpression: function(node, scope) {
      return findType(node.expressions[node.expressions.length-1], scope);
    },
    UnaryExpression: function(node) {
      return unopResultType(node.operator);
    },
    UpdateExpression: function() {
      return cx.num;
    },
    BinaryExpression: function(node, scope) {
      if (binopIsBoolean(node.operator)) return cx.bool;
      if (node.operator == "+") {
        var lhs = findType(node.left, scope);
        var rhs = findType(node.right, scope);
        if (lhs.hasType(cx.str) || rhs.hasType(cx.str)) return cx.str;
      }
      return cx.num;
    },
    AssignmentExpression: function(node, scope) {
      return findType(node.right, scope);
    },
    LogicalExpression: function(node, scope) {
      var lhs = findType(node.left, scope);
      return lhs.isEmpty() ? findType(node.right, scope) : lhs;
    },
    ConditionalExpression: function(node, scope) {
      var lhs = findType(node.consequent, scope);
      return lhs.isEmpty() ? findType(node.alternate, scope) : lhs;
    },
    NewExpression: function(node, scope) {
      var f = findType(node.callee, scope).getFunctionType();
      var proto = f && f.getProp("prototype").getObjType();
      if (!proto) return ANull;
      return getInstance(proto, f);
    },
    CallExpression: function(node, scope) {
      return computeReturnType(node.callee, node.arguments, scope);
    },
    MemberExpression: function(node, scope) {
      var propN = propName(node), obj = findType(node.object, scope).getType();
      if (obj) return obj.getProp(propN);
      if (propN == "<i>") return ANull;
      return findByPropertyName(propN);
    },
    MethodDefinition: function(node) {
      var propN = propName(node), obj = getThis(node.value.scope).getType();
      if (obj) return obj.getProp(propN);
      return ANull;
    },
    Identifier: function(node, scope) {
      return scope.hasProp(node.name) || ANull;
    },
    ThisExpression: function(_node, scope) {
      return getThis(scope);
    },
    Literal: function(node) {
      return literalType(node);
    },
    Super: ret(function(node) {
      return node.superType;
    }),
    TemplateLiteral: function() {
      return cx.str;
    },
    TaggedTemplateExpression: function(node, scope) {
      return computeReturnType(node.tag, node.quasi.expressions, scope);
    },
    YieldExpression: function(_node, scope) {
      var fn = functionScope(scope).fnType;
      return fn ? fn.yieldval : ANull;
    }
  };

  function findType(node, scope) {
    var finder = typeFinder[node.type];
    return finder ? finder(node, scope) : ANull;
  }

  var searchVisitor = exports.searchVisitor = walk.make({
    Function: function(node, _st, c) {
      walk.base.Function(node, node.scope, c);
    },
    CatchClause: function(node, _st, c) {
      walk.base.CatchClause(node, node.scope, c);
    },
    Property: function(node, st, c) {
      if (node.computed) c(node.key, st, "Expression");
      if (node.key != node.value) c(node.value, st, "Expression");
    },
    Statement: function(node, st, c) {
      c(node, node.scope || st);
    },
    ImportSpecifier: function(node, st, c) {
      c(node.local, st);
    },
    ImportDefaultSpecifier: function(node, st, c) {
      c(node.local, st);
    },
    ImportNamespaceSpecifier: function(node, st, c) {
      c(node.local, st);
    }
  });
  var searchExprVisitor = exports.searchExprVisitor = walk.make({
    MemberExpression: function(node, st, c) {
      c(node.object, st, "Expression");
      if (node.computed) { c(node.property, st, "Expression"); }
    },
    Property: function(node, st, c) {
      if (node.computed) c(node.key, st, "Expression");
      c(node.value, st, "Expression");
    }
  }, searchVisitor);
  exports.fullVisitor = walk.make({
    MemberExpression: function(node, st, c) {
      c(node.object, st, "Expression");
      c(node.property, st, node.computed ? "Expression" : null);
    },
    Property: function(node, st, c) {
      if (node.computed) c(node.key, st, "Expression");
      c(node.value, st, "Expression");
    }
  }, searchVisitor);

  exports.findExpressionAt = function(ast, start, end, defaultScope, filter) {
    var test = filter || function(_t, node) {
      if (node.type == "Identifier" && node.name == "✖") return false;
      return typeFinder.hasOwnProperty(node.type);
    };
    return walk.findNodeAt(ast, start, end, test, searchExprVisitor, defaultScope || cx.topScope);
  };
  exports.findClosestExpression = function(ast, start, end, defaultScope, filter) {
    var test = filter || function(_t, node) {
      if (start != null && node.start > start) return false;
      if (node.type == "Identifier" && node.name == "✖") return false;
      return typeFinder.hasOwnProperty(node.type);
    };
    return walk.findNodeAround(ast, end, test, searchExprVisitor, defaultScope || cx.topScope);
  };

  exports.findExpressionAround = function(ast, start, end, defaultScope, filter) {
    var test = filter || function(_t, node) {
      if (start != null && node.start > start) return false;
      if (node.type == "Identifier" && node.name == "✖") return false;
      return typeFinder.hasOwnProperty(node.type);
    };
    return walk.findNodeAround(ast, end, test, searchVisitor, defaultScope || cx.topScope);
  };

  exports.expressionType = function(found) {
    return findType(found.node, found.state);
  };

  // Finding the expected type of something, from context

  exports.parentNode = function(child, ast) {
    var stack = [];
    function c(node, st, override) {
      if (node.start <= child.start && node.end >= child.end) {
        var top = stack[stack.length - 1];
        if (node == child) throw {found: top};
        if (top != node) stack.push(node);
        walk.base[override || node.type](node, st, c);
        if (top != node) stack.pop();
      }
    }
    try {
      c(ast, null);
    } catch (e) {
      if (e.found) return e.found;
      throw e;
    }
  };

  var findTypeFromContext = exports.findTypeFromContext = {
    ArrayExpression: function(parent, _, get) { return get(parent, true).getProp("<i>"); },
    ObjectExpression: function(parent, node, get) {
      for (var i = 0; i < parent.properties.length; ++i) {
        var prop = node.properties[i];
        if (prop.value == node)
          return get(parent, true).getProp(propName(prop));
      }
    },
    UnaryExpression: function(parent) { return unopResultType(parent.operator); },
    UpdateExpression: function() { return cx.num; },
    BinaryExpression: function(parent) { return binopIsBoolean(parent.operator) ? cx.bool : cx.num; },
    AssignmentExpression: function(parent, _, get) { return get(parent.left); },
    LogicalExpression: function(parent, _, get) { return get(parent, true); },
    ConditionalExpression: function(parent, node, get) {
      if (parent.consequent == node || parent.alternate == node) return get(parent, true);
    },
    CallExpression: function(parent, node, get) {
      for (var i = 0; i < parent.arguments.length; i++) {
        var arg = parent.arguments[i];
        if (arg == node) {
          var calleeType = get(parent.callee).getFunctionType();
          if (calleeType instanceof Fn)
            return calleeType.args[i];
          break;
        }
      }
    },
    ReturnStatement: function(_parent, node, get) {
      // tweaking search position to avoid endless recursion
      // when looking for definition of key in fn ( return fn ( return object ) )
      // see ternjs/tern#777
      var fnNode = walk.findNodeAround(node.sourceFile.ast, node.start - 1, "Function");
      if (fnNode) {
        var fnType = fnNode.node.type != "FunctionDeclaration"
          ? get(fnNode.node, true).getFunctionType()
          : fnNode.node.scope.fnType;
        if (fnType) return fnType.retval.getType();
      }
    },
    VariableDeclarator: function(parent, node, get) {
      if (parent.init == node) return get(parent.id);
    }
  };
  findTypeFromContext.NewExpression = findTypeFromContext.CallExpression;

  exports.typeFromContext = function(ast, found) {
    var parent = exports.parentNode(found.node, ast);
    var type = null;
    if (findTypeFromContext.hasOwnProperty(parent.type)) {
      var finder = findTypeFromContext[parent.type];
      type = finder && finder(parent, found.node, function(node, fromContext) {
        var obj = {node: node, state: found.state};
        var tp = fromContext ? exports.typeFromContext(ast, obj) : exports.expressionType(obj);
        return tp || ANull;
      });
    }
    return type || exports.expressionType(found);
  };

  // Flag used to indicate that some wild guessing was used to produce
  // a type or set of completions.
  var guessing = false;

  exports.resetGuessing = function(val) { guessing = val; };
  exports.didGuess = function() { return guessing; };

  exports.forAllPropertiesOf = function(type, f) {
    type.gatherProperties(f, 0);
  };

  exports.findRefs = function(ast, baseScope, name, refScope, f) {
    function handleId(node, scope, ancestors) {
      var parent = ancestors[ancestors.length - 2];
      if (parent.type == "MemberExpression" && !parent.computed && !!node.object) return;
      if (node.name != name ||
          (node == ast.id && ast.type == "FunctionDeclaration")) return;
      if (parent.property === node) return;
      for (var s = scope; s; s = s.prev) {
        if (s == refScope) f(node, scope, ancestors);
        if (name in s.props) return;
      }
    }
    walk.ancestor(ast, {Identifier: handleId, VariablePattern: handleId},
                  exports.fullVisitor, baseScope);
  };

  var simpleWalker = walk.make({
    Function: function(node, _scope, c) {
      c(node.body, node.scope, node.expression ? "Expression" : "Statement");
    },
    Statement: function(node, scope, c) {
      c(node, node.scope || scope);
    }
  });

  exports.findPropRefs = function(ast, scope, objType, name, f) {
    // Find the type which owns the property in hierarchy
    while (objType && !objType.props[name] && !(objType.maybeProps && objType.maybeProps[name])) {
      objType = objType.proto;
    }
    if (!objType) throw new Error("Couldn't locate property in the base object type.");

    function isObjTypeProto(type) {
      // Check whether the found type has objType in its hierarchy
      while (type && type != objType) {
        // Ff property is overriden higher in the hierarchy, return false
        if (type.props[name] || (type.maybeProps && type.maybeProps[name])) {
          return false;
        }
        type = type.proto;
      }
      return type;
    }

    walk.simple(ast, {
      MemberExpression: function(node, scope) {
        if (node.computed || propName(node) != name) return;
        if (isObjTypeProto(findType(node.object, scope).getType())) f(node.property, scope);
      },
      ObjectExpression: function(node, scope) {
        if (findType(node, scope).getType() != objType) return;
        for (var i = 0; i < node.properties.length; ++i)
          if (propName(node.properties[i]) == name) f(node.properties[i].key, scope);
      },
      MethodDefinition: function(node) {
        if (propName(node) != name) return;
        if (node.value && isObjTypeProto(getThis(node.value.scope).getType())) f(node.key, node.value.scope);
      }
    }, simpleWalker, scope);
  };

  // LOCAL-VARIABLE QUERIES

  var scopeAt = exports.scopeAt = function(ast, pos, defaultScope) {
    var found = walk.findNodeAround(ast, pos, function(_, node) {
      return node.scope;
    });
    if (found) return found.node.scope;
    else return defaultScope || cx.topScope;
  };

  exports.forAllLocalsAt = function(ast, pos, defaultScope, f) {
    var scope = scopeAt(ast, pos, defaultScope);
    scope.gatherProperties(f, 0);
  };

  // INIT DEF MODULE

  // Delayed initialization because of cyclic dependencies.
  def = exports.def = def.init({}, exports);
});
/* --------------------------------------------------------------
         js/libs/acorn/doc_comment.js
   -------------------------------------------------------------- */
// Parses comments above variable declarations, function declarations,
// and object properties as docstrings and JSDoc-style type
// annotations.

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    return mod(require("../lib/infer"), require("../lib/tern"), require("../lib/comment"),
               require("acorn"), require("acorn-walk"));
  if (typeof define == "function" && define.amd) // AMD
    return define(["../lib/infer", "../lib/tern", "../lib/comment", "acorn/dist/acorn", "acorn-walk/dist/walk"], mod);
  mod(tern, tern, tern.comment, acorn, acorn.walk);
})(function(infer, tern, comment, acorn, walk) {
  "use strict";

  var WG_MADEUP = 1, WG_STRONG = 101;

  tern.registerPlugin("doc_comment", function(server, options) {
    server.mod.jsdocTypedefs = Object.create(null);
    server.on("reset", function() {
      server.mod.jsdocTypedefs = Object.create(null);
    });
    server.mod.docComment = {
      weight: options && options.strong ? WG_STRONG : undefined,
      fullDocs: options && options.fullDocs
    };

    server.on("postParse", postParse);
    server.on("postInfer", postInfer);
    server.on("postLoadDef", postLoadDef);
  });

  function postParse(ast, text) {
    function attachComments(node) { comment.ensureCommentsBefore(text, node); }

    walk.simple(ast, {
      VariableDeclaration: attachComments,
      FunctionDeclaration: attachComments,
      MethodDefinition: attachComments,
      Property: attachComments,
      AssignmentExpression: function(node) {
        if (node.operator == "=") attachComments(node);
      },
      CallExpression: function(node) {
        if (isDefinePropertyCall(node)) attachComments(node);
      },
      ExportNamedDeclaration: attachComments,
      ExportDefaultDeclaration: attachComments,
      ClassDeclaration: attachComments
    });
  }

  function isDefinePropertyCall(node) {
    return node.callee.type == "MemberExpression" &&
      node.callee.object.name == "Object" &&
      node.callee.property.name == "defineProperty" &&
      node.arguments.length >= 3 &&
      typeof node.arguments[1].value == "string";
  }

  function postInfer(ast, scope) {
    jsdocParseTypedefs(ast.sourceFile.text, scope);

    walk.simple(ast, {
      VariableDeclaration: function(node, scope) {
        var decl = node.declarations[0].id;
        if (node.commentsBefore && decl.type == "Identifier")
          interpretComments(node, node.commentsBefore, scope,
                            scope.getProp(node.declarations[0].id.name));
      },
      FunctionDeclaration: function(node, scope) {
        if (node.commentsBefore)
          interpretComments(node, node.commentsBefore, scope,
                            scope.getProp(node.id.name),
                            node.scope.fnType);
      },
      ClassDeclaration: function(node, scope) {
        if (node.commentsBefore)
          interpretComments(node, node.commentsBefore, scope,
                            scope.getProp(node.id.name),
                            node.objType);
      },
      AssignmentExpression: function(node, scope) {
        if (node.commentsBefore)
          interpretComments(node, node.commentsBefore, scope,
                            infer.expressionType({node: node.left, state: scope}));
      },
      ObjectExpression: function(node, scope) {
        for (var i = 0; i < node.properties.length; ++i) {
          var prop = node.properties[i];
          if (prop.type == 'SpreadElement') { continue; }
          var name = infer.propName(prop);
          if (name != "<i>" && prop.commentsBefore)
            interpretComments(prop, prop.commentsBefore, scope, node.objType.getProp(name));
        }
      },
      Class: function(node, scope) {
        if (!node.objType) return;
        var proto = node.objType.getProp("prototype").getObjType();
        if (!proto) return;
        for (var i = 0; i < node.body.body.length; i++) {
          var method = node.body.body[i], name;
          if (!method.commentsBefore) continue;
          if (method.kind == "constructor")
            interpretComments(method, method.commentsBefore, scope, node.objType);
          else if ((name = infer.propName(method)) != "<i>")
            interpretComments(method, method.commentsBefore, scope, proto.getProp(name));
        }
      },
      CallExpression: function(node, scope) {
        if (node.commentsBefore && isDefinePropertyCall(node)) {
          var type = infer.expressionType({node: node.arguments[0], state: scope}).getObjType();
          if (type && type instanceof infer.Obj) {
            var prop = type.props[node.arguments[1].value];
            if (prop) interpretComments(node, node.commentsBefore, scope, prop);
          }
        }
      },
      ExportNamedDeclaration: function(node, scope) {
        if (node.commentsBefore && node.declaration && node.declaration.type === 'FunctionDeclaration') {
          interpretComments(node.declaration, node.commentsBefore, scope,
                            scope.getProp(node.declaration.id.name),
                            node.declaration.scope.fnType);
        }
      },
      ExportDefaultDeclaration: function(node, scope) {
        if (node.commentsBefore && node.declaration && node.declaration.type === 'FunctionDeclaration') {
          interpretComments(node.declaration, node.commentsBefore, scope,
                            scope.getProp(node.declaration.id.name),
                            node.declaration.scope.fnType);
        }
      }
    }, infer.searchVisitor, scope);
  }

  function postLoadDef(data) {
    var defs = data["!typedef"];
    var cx = infer.cx(), orig = data["!name"];
    if (defs) for (var name in defs)
      cx.parent.mod.jsdocTypedefs[name] =
        maybeInstance(infer.def.parse(defs[name], orig, name), name);
  }

  // COMMENT INTERPRETATION

  function stripLeadingChars(lines) {
    for (var head, i = 1; i < lines.length; i++) {
      var line = lines[i], lineHead = line.match(/^[\s\*]*/)[0];
      if (lineHead != line) {
        if (head == null) {
          head = lineHead;
        } else {
          var same = 0;
          while (same < head.length && head.charCodeAt(same) == lineHead.charCodeAt(same)) ++same;
          if (same < head.length) head = head.slice(0, same);
        }
      }
    }
    lines = lines.map(function(line, i) {
      line = line.replace(/\s+$/, "");
      if (i == 0 && head != null) {
        for (var j = 0; j < head.length; j++) {
          var found = line.indexOf(head.slice(j));
          if (found == 0) return line.slice(head.length - j);
        }
      }
      if (head == null || i == 0) return line.replace(/^[\s\*]*/, "");
      if (line.length < head.length) return "";
      return line.slice(head.length);
    });
    while (lines.length && !lines[lines.length - 1]) lines.pop();
    while (lines.length && !lines[0]) lines.shift();
    return lines;
  }

  function interpretComments(node, comments, scope, aval, type) {
    jsdocInterpretComments(node, scope, aval, comments);
    var cx = infer.cx();

    if (!type && aval instanceof infer.AVal && aval.types.length) {
      type = aval.types[aval.types.length - 1];
      if (!(type instanceof infer.Obj) || type.origin != cx.curOrigin || type.doc)
        type = null;
    }

    for (var i = comments.length - 1; i >= 0; i--) {
      var text = stripLeadingChars(comments[i].split(/\r\n?|\n/)).join("\n");
      if (text) {
        if (aval instanceof infer.AVal) aval.doc = text;
        if (type) type.doc = text;
        break;
      }
    }
  }

  // Parses a subset of JSDoc-style comments in order to include the
  // explicitly defined types in the analysis.

  function skipSpace(str, pos) {
    while (/\s/.test(str.charAt(pos))) ++pos;
    return pos;
  }

  function isIdentifier(string) {
    if (!acorn.isIdentifierStart(string.charCodeAt(0))) return false;
    for (var i = 1; i < string.length; i++)
      if (!acorn.isIdentifierChar(string.charCodeAt(i))) return false;
    return true;
  }

  function parseLabelList(scope, str, pos, close) {
    var labels = [], types = [], madeUp = false;
    for (var first = true; ; first = false) {
      pos = skipSpace(str, pos);
      if (first && str.charAt(pos) == close) break;
      var colon = str.indexOf(":", pos);
      if (colon < 0) return null;
      var label = str.slice(pos, colon);
      if (!isIdentifier(label)) return null;
      labels.push(label);
      pos = colon + 1;
      var type = parseType(scope, str, pos);
      if (!type) return null;
      pos = type.end;
      madeUp = madeUp || type.madeUp;
      types.push(type.type);
      pos = skipSpace(str, pos);
      var next = str.charAt(pos);
      ++pos;
      if (next == close) break;
      if (next != ",") return null;
    }
    return {labels: labels, types: types, end: pos, madeUp: madeUp};
  }

  function parseTypeAtom(scope, str, pos) {
    var result = parseTypeInner(scope, str, pos);
    if (!result) return null;
    if (str.slice(result.end, result.end + 2) == "[]")
      return {madeUp: result.madeUp, end: result.end + 2, type: new infer.Arr(result.type)};
    else return result;
  }

  function parseType(scope, str, pos) {
    var type, union = false, madeUp = false;
    for (;;) {
      var inner = parseTypeAtom(scope, str, pos);
      if (!inner) return null;
      madeUp = madeUp || inner.madeUp;
      if (union) inner.type.propagate(union);
      else type = inner.type;
      pos = skipSpace(str, inner.end);
      if (str.charAt(pos) != "|") break;
      pos++;
      if (!union) {
        union = new infer.AVal;
        type.propagate(union);
        type = union;
      }
    }
    var isOptional = false;
    if (str.charAt(pos) == "=") {
      ++pos;
      isOptional = true;
    }
    return {type: type, end: pos, isOptional: isOptional, madeUp: madeUp};
  }

  function parseTypeInner(scope, str, pos) {
    pos = skipSpace(str, pos);
    if (/[?!]/.test(str.charAt(pos))) pos++;
    var type, madeUp = false;

    if (str.indexOf("function(", pos) == pos) {
      var args = parseLabelList(scope, str, pos + 9, ")"), ret = infer.ANull;
      if (!args) return null;
      pos = skipSpace(str, args.end);
      if (str.charAt(pos) == ":") {
        ++pos;
        var retType = parseType(scope, str, pos + 1);
        if (!retType) return null;
        pos = retType.end;
        ret = retType.type;
        madeUp = retType.madeUp;
      }
      type = new infer.Fn(null, infer.ANull, args.types, args.labels, ret);
    } else if (str.charAt(pos) == "[") {
      var inner = parseType(scope, str, pos + 1);
      if (!inner) return null;
      pos = skipSpace(str, inner.end);
      madeUp = inner.madeUp;
      if (str.charAt(pos) != "]") return null;
      ++pos;
      type = new infer.Arr(inner.type);
    } else if (str.charAt(pos) == "{") {
      var fields = parseLabelList(scope, str, pos + 1, "}");
      if (!fields) return null;
      type = new infer.Obj(true);
      for (var i = 0; i < fields.types.length; ++i) {
        var field = type.defProp(fields.labels[i]);
        field.initializer = true;
        fields.types[i].propagate(field);
      }
      pos = fields.end;
      madeUp = fields.madeUp;
    } else if (str.charAt(pos) == "(") {
      var inner = parseType(scope, str, pos + 1);
      if (!inner) return null;
      pos = skipSpace(str, inner.end);
      if (str.charAt(pos) != ")") return null;
      ++pos;
      type = inner.type;
    } else {
      var start = pos;
      if (!acorn.isIdentifierStart(str.charCodeAt(pos))) return null;
      while (acorn.isIdentifierChar(str.charCodeAt(pos))) ++pos;
      if (start == pos) return null;
      var word = str.slice(start, pos);
      if (/^(number|integer)$/i.test(word)) type = infer.cx().num;
      else if (/^bool(ean)?$/i.test(word)) type = infer.cx().bool;
      else if (/^string$/i.test(word)) type = infer.cx().str;
      else if (/^(null|undefined)$/i.test(word)) type = infer.ANull;
      else if (/^array$/i.test(word)) {
        var inner = null;
        if (str.charAt(pos) == "." && str.charAt(pos + 1) == "<") {
          var inAngles = parseType(scope, str, pos + 2);
          if (!inAngles) return null;
          pos = skipSpace(str, inAngles.end);
          madeUp = inAngles.madeUp;
          if (str.charAt(pos++) != ">") return null;
          inner = inAngles.type;
        }
        type = new infer.Arr(inner);
      } else if (/^object$/i.test(word)) {
        type = new infer.Obj(true);
        if (str.charAt(pos) == "." && str.charAt(pos + 1) == "<") {
          var key = parseType(scope, str, pos + 2);
          if (!key) return null;
          pos = skipSpace(str, key.end);
          if (str.charAt(pos++) != ",") return null;
          var val = parseType(scope, str, pos);
          if (!val) return null;
          pos = skipSpace(str, val.end);
          madeUp = key.madeUp || val.madeUp;
          if (str.charAt(pos++) != ">") return null;
          val.type.propagate(type.defProp("<i>"));
        }
      } else {
        while (str.charCodeAt(pos) == 46 ||
               acorn.isIdentifierChar(str.charCodeAt(pos))) ++pos;
        var path = str.slice(start, pos);
        var cx = infer.cx(), defs = cx.parent && cx.parent.mod.jsdocTypedefs, found;
        if (defs && (path in defs)) {
          type = defs[path];
        } else if (found = infer.def.parsePath(path, scope).getObjType()) {
          type = maybeInstance(found, path);
        } else {
          if (!cx.jsdocPlaceholders) cx.jsdocPlaceholders = Object.create(null);
          if (!(path in cx.jsdocPlaceholders))
            type = cx.jsdocPlaceholders[path] = new infer.Obj(null, path);
          else
            type = cx.jsdocPlaceholders[path];
          madeUp = true;
        }
      }
    }

    return {type: type, end: pos, madeUp: madeUp};
  }

  function maybeInstance(type, path) {
    if (type instanceof infer.Fn && /(?:^|\.)[A-Z][^\.]*$/.test(path)) {
      var proto = type.getProp("prototype").getObjType();
      if (proto instanceof infer.Obj) return infer.getInstance(proto);
    }
    return type;
  }

  function parseTypeOuter(scope, str, pos) {
    pos = skipSpace(str, pos || 0);
    if (str.charAt(pos) != "{") return null;
    var result = parseType(scope, str, pos + 1);
    if (!result) return null;
    var end = skipSpace(str, result.end);
    if (str.charAt(end) != "}") return null;
    result.end = end + 1;
    return result;
  }

  function jsdocInterpretComments(node, scope, aval, comments) {
    var type, args, ret, foundOne, self, parsed;

    for (var i = 0; i < comments.length; ++i) {
      var comment = comments[i];
      var decl = /(?:\n|\*)\s*@(type|param|arg(?:ument)?|returns?|this|class|constructor)(?:\s*?\n|\s+(.*))/g, m;
      while (m = decl.exec(comment)) {
        if (m[1] == "class" || m[1] == "constructor") {
          self = foundOne = true;
          continue;
        }

        if (m[2] === undefined) continue; // to avoid tags that require a type argument.

        if (m[1] == "this" && (parsed = parseType(scope, m[2], 0))) {
          self = parsed;
          foundOne = true;
          continue;
        }

        if (!(parsed = parseTypeOuter(scope, m[2]))) continue;
        foundOne = true;

        switch(m[1]) {
        case "returns": case "return":
          ret = parsed; break;
        case "type":
          type = parsed; break;
        case "param": case "arg": case "argument":
            // Possible jsdoc param name situations:
            // employee
            // [employee]
            // [employee=John Doe]
            // employee.name
            // employees[].name
            var name = m[2].slice(parsed.end).match(/^\s*(\[?)\s*([^\[\]\s=]+(\[\][^\[\]\s=]+)?)\s*(?:=[^\]]+\s*)?(\]?).*/);
            if (!name) continue;
            var argname = name[2] + (parsed.isOptional || (name[1] === '[' && name[4] === ']') ? "?" : "");

            // Check to see if the jsdoc is indicating a property of a previously documented parameter
            var isObjProp = false;
            var parts = argname.split('.');
            if (args && parts.length == 2) {
              var objname = parts[0];
              argname = parts[1];

              // Go through each of the previously found parameter to find the
              // object or array for which this new parameter should be a part
              // of
              var key, value;
              for (key in args) {
                value = args[key];

                if (key === objname && value.type instanceof infer.Obj) {
                  isObjProp = true;
                  parsed.type.propagate(value.type.defProp(argname));
                }
                else if (key + '[]' === objname && value.type instanceof infer.Arr) {
                  isObjProp = true;
                  parsed.type.propagate(value.type.getProp("<i>").getType().defProp(argname));
                }
              }
            }
            if (!isObjProp) {
              (args || (args = Object.create(null)))[argname] = parsed;
            }
          break;
        }
      }
    }

    if (foundOne) applyType(type, self, args, ret, node, aval);
  }

  function jsdocParseTypedefs(text, scope) {
    var cx = infer.cx();

    var re = /\s@typedef\s+(.*)/g, m;
    while (m = re.exec(text)) {
      var parsed = parseTypeOuter(scope, m[1]);
      var name = parsed && m[1].slice(parsed.end).match(/^\s*(\S+)/);
      if (name && parsed.type instanceof infer.Obj) {
        var rest = text.slice(m.index + m[0].length);
        while (m = /\s+@prop(?:erty)?\s+(.*)/.exec(rest)) {
          var propType = parseTypeOuter(scope, m[1]), propName;
          if (propType && (propName = m[1].slice(propType.end).match(/^\s*(\S+)/)))
            propType.type.propagate(parsed.type.defProp(propName[1]));
          rest = rest.slice(m[0].length);
        }
        cx.parent.mod.jsdocTypedefs[name[1]] = parsed.type;
      }
    }
  }

  function propagateWithWeight(type, target) {
    var weight = infer.cx().parent.mod.docComment.weight;
    type.type.propagate(target, weight || (type.madeUp ? WG_MADEUP : undefined));
  }

  function isFunExpr(node) { return node.type == "FunctionExpression" || node.type == "ArrowFunctionExpression" }

  function applyType(type, self, args, ret, node, aval) {
    var fn;
    if (node.type == "VariableDeclaration") {
      var decl = node.declarations[0];
      if (decl.init && isFunExpr(decl.init)) fn = decl.init.scope.fnType;
    } else if (node.type == "FunctionDeclaration") {
      fn = node.scope.fnType;
    } else if (node.type == "AssignmentExpression") {
      if (isFunExpr(node.right))
        fn = node.right.scope.fnType;
    } else if (node.type == "CallExpression" || node.type === "ClassDeclaration") {
    } else { // An object property
      if (isFunExpr(node.value)) fn = node.value.scope.fnType;
    }

    if (fn && (args || ret || self)) {
      if (args) for (var i = 0; i < fn.argNames.length; ++i) {
        var name = fn.argNames[i], known = args[name];
        if (!known && (known = args[name + "?"]))
          fn.argNames[i] += "?";
        if (known) propagateWithWeight(known, fn.args[i]);
      }
      if (ret) {
        if (fn.retval == infer.ANull) fn.retval = new infer.AVal;
        propagateWithWeight(ret, fn.retval);
      }
      if (self === true) {
        var proto = fn.getProp("prototype").getObjType();
        self = proto && {type: infer.getInstance(proto, fn)};
      }
      if (self) propagateWithWeight(self, fn.self);
    } else if (type) {
      propagateWithWeight(type, aval);
    }
  }
});
/* --------------------------------------------------------------
         EspruinoTools/espruino.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Initialisation code
 ------------------------------------------------------------------
**/
"use strict";

(function() {

  /** List of processors. These are functions that are called one
   * after the other with the data received from the last one.
   *
   * Common processors are:
   *
   *   jsCodeChanged        - called when the code in JS editor changes with {code, editor}
   *   xmlCodeChanged       - called when the code in the blockly editor changes with {code}
   *   sending              - sending code to Espruino (no data)
   *   sendModeChanged      - called when the send mode (RAM/Flash/Storage) changes
   *   transformForEspruino - transform code ready to be sent to Espruino
   *   transformModuleForEspruino({code,name})
   *           - transform module code before it's sent to Espruino with Modules.addCached (we only do this if we don't think it's been minified before)
   *   connected            - connected to Espruino (no data)
   *   disconnected         - disconnected from Espruino (no data)
   *   environmentVar       - Board's process.env loaded (object to be saved into Espruino.Env.environmentData)
   *   boardJSONLoaded      - Board's JSON was loaded into environmentVar
   *   getModule            - Called with data={moduleName:"foo", moduleCode:undefined} - moduleCode should be filled in if the module can be found
   *   getURL               - Called with data={url:"http://....", data:undefined) - data should be filled in if the URL is handled (See Espruino.Core.Utils.getURL to use this)
   *   terminalClear        - terminal has been cleared
   *   terminalPrompt       - we've received a '>' character (eg, `>` or `debug>`). The argument is the current line's contents.
   *   terminalNewLine      - When we get a new line on the terminal, this gets called with the last line's contents
   *   debugMode            - called with true or false when debug mode is entered or left
   *   editorHover          - called with { node : htmlNode, showTooltip : function(htmlNode) } when something is hovered over
   *   notification         - called with { mdg, type:"success","error"/"warning"/"info" }
   *   webcam               - called when webcam is visible or not {  visible : true , stream: MediaStream }
   **/
  var processors = {};

  function init() {

    Espruino.Core.Config.loadConfiguration(function() {
      // Initialise all modules
      function initModule(modName, mod) {
        console.log("Initialising "+modName);
        if (mod.init !== undefined) {
          try {
            mod.init();
          } catch (e) {
            console.warn("Module initialisation failed for "+modName, e);
          }
        }
      }

      var module;

      function initModules(moduleList) {
        var moduleNames = Object.keys(moduleList).sort(function(a,b) {
          return (0|moduleList[a].sortOrder) - (0|moduleList[b].sortOrder);
        });
        //console.log(moduleNames);
        moduleNames.forEach(function(module) {
          initModule(module, moduleList[module]);
        });
      }

      initModules(Espruino.Core);
      initModules(Espruino.Plugins);

      callProcessor("initialised", undefined, function() {
        // We need the delay because of background.js's url_handler...
        setTimeout(function() {
          Espruino.initialised = true;
        }, 1000);
      });
    });
  }

  // Automatically start up when all is loaded
  if (typeof document!=="undefined")
    document.addEventListener("DOMContentLoaded", init);

  /** Add a processor function of type function(data,callback) */
  function addProcessor(eventType, processor) {
    if (processors[eventType]===undefined)
      processors[eventType] = [];
    processors[eventType].push(processor);
  }

  /** Call a processor function */
  function callProcessor(eventType, data, callback) {
    var p = processors[eventType];
    // no processors
    if (p===undefined || p.length==0) {
      if (callback!==undefined) callback(data);
      return;
    }
    // now go through all processors
    var n = 0;
    var cbCalled = false;
    var cb = function(inData) {
      if (cbCalled) {
        console.error("Callback: ", cb);
        console.error("PREVIOUS CALL: ", cbCalled);
        console.error("CURRENT CALL: ", (new Error()).stack);
        throw new Error(`Internal error in '${eventType}' processor. Callback is called TWICE.`);
      }
      cbCalled = (new Error()).stack;
      if (n < p.length) {
        cbCalled = false;
        p[n++](inData, cb);
      } else {
        if (callback!==undefined) callback(inData);
      }
    };
    cb(data);
  }

  // -----------------------------------
  globalThis.Espruino = {
    Core : { },
    Plugins : { },
    addProcessor : addProcessor,
    callProcessor : callProcessor,
    initialised : false,
    init : init, // just in case we need to initialise this by hand
  };

  return Espruino;
})();
/* --------------------------------------------------------------
         js/core/settingsConsole.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  'Console' Settings Page showing console.log output
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var MAX_LINES = 100;
  var lines = [];
  var linesClipped = 0;
  function doLog(prefix, args, postfix) {
    var str = Array.prototype.slice.apply(args).join(' ');
    lines.push(prefix+Espruino.Core.Utils.escapeHTML(str)+postfix);
    if (lines.length > MAX_LINES) {
      linesClipped += lines.lenth-MAX_LINES;
      lines = lines.slice(-MAX_LINES);
    }
  }

  var oldConsoleLog = console.log;
  console.log = function() {
    doLog('<span>', arguments, '</span>');
    oldConsoleLog.apply(console, arguments);
  }
  var oldConsoleWarn = console.warn;
  console.warn = function() {
    doLog('<span style="color:#ff9900">WARNING: ', arguments, '</span>');
    oldConsoleWarn.apply(console, arguments);
  }
  var oldConsoleError = console.error;
  console.error = function() {
    doLog('<span style="color:red">ERROR: ', arguments, '</span>');
    oldConsoleError.apply(console, arguments);
  }

  function init() {
    Espruino.Core.Config.addSection("Console", {
      description : "The last "+MAX_LINES+" lines of log messages made by the Web IDE. This is only useful when trying to debug potential problems with the IDE or Espruino board itself.",
      sortOrder : 10000,
      getHTML : function(callback) {
        var html = '<div class="console">';
        if (linesClipped) html += '<span style="color:#808080">'+linesClipped+' lines not displayed...</span><br/>'
        html += lines.join('<br/>\n');
        html += '</div>';
        callback(html);
      }
    });
  }

  Espruino.Core.SettingsConsole = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/core/utils.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Utilities
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  /// Chunk size that files are uploaded/downloaded to Espruino in
  var CHUNKSIZE = 384;// or any multiple of 96 for atob/btoa

  function init() {

  }

  function isWindows() {
    return (typeof navigator!="undefined") && navigator.userAgent.indexOf("Windows")>=0;
  }

  function isLinux() {
    return (typeof navigator!="undefined") && navigator.userAgent.indexOf("Linux")>=0;
  }

  function isAppleDevice() {
    return (typeof navigator!="undefined") && (typeof window!="undefined") && /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
  }

  function isChrome(){
    return navigator.userAgent.indexOf("Chrome")>=0;
  }

  function isFirefox(){
    return navigator.userAgent.indexOf("Firefox")>=0;
  }

  function getChromeVersion(){
    return parseInt(window.navigator.appVersion.match(/Chrome\/(.*?) /)[1].split(".")[0]);
  }

  function isNWApp() {
    return (typeof require === "function") && (typeof require('nw.gui') !== "undefined");
  }

  function isChromeWebApp() {
    return ((typeof chrome === "object") && chrome.app && chrome.app.window);
  }

  function isProgressiveWebApp() {
    return !isNWApp() && !isChromeWebApp() && window && window.matchMedia && window.matchMedia('(display-mode: standalone)').matches;
  }

  function hasNativeTitleBar() {
    return !isNWApp() && !isChromeWebApp();
  }

  function isCrossOriginSubframe() {
    if (!window.parent) return false;
    try {
      return window.parent.location.host != window.location.host;
      // if actually cross origin, this will throw "Blocked a frame with origin ... from accessing a cross-origin frame."
    } catch (e) {
      return true;
    }
  }

  /** Does the currently connected board have an ARM processor that can execute Thumb code? */
  function isARMThumb() {
    var data = Espruino.Core.Env.getData();
    if (!data || !data.chip) return false;
    var family = data.chip.family;
    return ["NRF51","NRF52","STM32F1","STM32F3","STM32F4","STM32L4"].includes(family);
  }


  /**
   * Process text to produce a web safe string
   * @param {string} text Input text to be escaped
   * @param {boolean} escapeSpaces Should spaces be escaped to '&nbsp;'?
   * @returns {string}
   */
  function escapeHTML(text, escapeSpaces) {
    escapeSpaces = typeof escapeSpaces !== 'undefined' ? escapeSpaces : true;

    var chr = { '"': '&quot;', '&': '&amp;', '<': '&lt;', '>': '&gt;', ' ' : (escapeSpaces ? '&nbsp;' : ' ') };

    return text.toString().replace(/["&<> ]/g, function (a) { return chr[a]; });
  }

  /**
   * Google Docs, forums, etc tend to break code by replacing characters with fancy unicode versions.
   * Un-break the code by undoing these changes
   * @param {string} text
   * @returns {string}
   */
  function fixBrokenCode(text) {
    // make sure we ignore `&shy;` - which gets inserted
    // by the forum's code formatter
    text = text.replace(/\u00AD/g,'');
    // replace quotes that get auto-replaced by Google Docs and other editors
    text = text.replace(/[\u201c\u201d]/g,'"');
    text = text.replace(/[\u2018\u2019]/g,'\'');

    return text;
  }


  /**
   * Return a substring from a given input string of a given length and start position
   * @param {string} str Input string
   * @param {number} from First character position
   * @param {number} len Number of characters to return
   * @returns {string}
   */
  function getSubString(str, from, len) {
    if (len == undefined) {
      return str.substr(from, len);
    } else {
      var s = str.substr(from, len);
      while (s.length < len) s+=" ";
      return s;
    }
  }

  /**
   * Get a Lexer to parse JavaScript - this is really very nasty right now and it doesn't lex even remotely properly.
   * @param {string} str
   * @typedef {Object} LexerOutput
   * @property {string} type
   * @property {string} str Chars that were parsed
   * @property {string} value
   * @property {number} startIdx Index in string of the start
   * @property {number} endIdx Index in string of the end
   * @returns {LexerOutput} until EOF and then returns 'undefined'
   */
  function getLexer(str) {
    // Nasty lexer - no comments/etc
    var chAlpha="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_$";
    var chNum="0123456789";
    var chAlphaNum = chAlpha+chNum;
    var chWhiteSpace=" \t\n\r";
    // https://www-archive.mozilla.org/js/language/js20-2000-07/rationale/syntax.html#regular-expressions
    var allowedRegExIDs = ["abstract","break","case","catch","class","const","continue","debugger","default",
    "delete","do","else","enum","eval","export","extends","field","final","finally","for","function","goto",
    "if","implements","import","in","instanceof","native","new","package","private","protected","public",
    "return","static","switch","synchronized","throw","throws","transient","try","typeof","var","volatile","while","with"];
    var allowedRegExChars = ['!','%','&','*','+','-','/','<','=','>','?','[','{','}','(',',',';',':']; // based on Espruino jslex.c (may not match spec 100%)
    var ch;
    var idx = 0;
    var lineNumber = 1;
    var nextCh = function() {
      ch = str[idx++];
      if (ch=="\n") lineNumber++;
    };
    var backCh = function() {
      idx--;
      ch = str[idx-1];
    };
    nextCh();
    var isIn = function(s,c) { return s.indexOf(c)>=0; } ;
    var lastToken = {};
    var nextToken = function() {
      while (isIn(chWhiteSpace,ch)) {
        nextCh();
      }
      if (ch==undefined) return undefined;
      if (ch=="/") {
        nextCh();
        if (ch=="/") {
          // single line comment
          while (ch!==undefined && ch!="\n") nextCh();
          return nextToken();
        } else if (ch=="*") {
          nextCh();
          var last = ch;
          nextCh();
          // multiline comment
          while (ch!==undefined && !(last=="*" && ch=="/")) {
            last = ch;
            nextCh();
          }
          nextCh();
          return nextToken();
        } else {
          backCh(); // push the char back
        }
      }
      var s = "";
      var type, value;
      var startIdx = idx-1;
      if (isIn(chAlpha,ch)) { // ID
        type = "ID";
        do {
          s+=ch;
          nextCh();
        } while (isIn(chAlphaNum,ch));
      } else if (isIn(chNum,ch)) { // NUMBER
        type = "NUMBER";
        var chRange = chNum;
        if (ch=="0") { // Handle
          s+=ch;
          nextCh();
          if ("xXoObB".indexOf(ch)>=0) {
            if (ch=="b" || ch=="B") chRange="01";
            if (ch=="o" || ch=="O") chRange="01234567";
            if (ch=="x" || ch=="X") chRange="0123456789ABCDEFabcdef";
            s+=ch;
            nextCh();
          }
        }
        while (isIn(chRange,ch) || ch==".") {
          s+=ch;
          nextCh();
        }
      } else if (isIn("\"'`/",ch)) { // STRING or regex
        s+=ch;
        var q = ch;
        nextCh();
        // Handle case where '/' is just a divide character, not RegEx
        if (s=='/' && (lastToken.type=="STRING" || lastToken.type=="NUMBER" ||
                       (lastToken.type=="ID" && !allowedRegExIDs.includes(lastToken.str)) ||
                       (lastToken.type=="CHAR" && !allowedRegExChars.includes(lastToken.str))
                      )) {
          // https://www-archive.mozilla.org/js/language/js20-2000-07/rationale/syntax.html#regular-expressions
          type = "CHAR";
        } else {
          type = "STRING"; // should we report this as REGEX?
          value = "";

          while (ch!==undefined && ch!=q) {
            if (ch=="\\") { // handle escape characters
              nextCh();
              var escape = '\\'+ch;
              // var escapeExtra = 0;
              if (ch=="x") {
                nextCh();escape += ch;
                nextCh();escape += ch;
                value += String.fromCharCode(parseInt(escape.substr(2), 16));
              } else if (ch=="u") {
                nextCh();escape += ch;
                nextCh();escape += ch;
                nextCh();escape += ch;
                nextCh();escape += ch;
                value += String.fromCharCode(parseInt(escape.substr(2), 16));
              } else {
                try {
                  value += JSON.parse('"'+escape+'"');
                } catch (e) {
                  value += escape;
                }
              }
              s += escape;
            } else {
              s+=ch;
              value += ch;
            }
            nextCh();
          }
          if (ch!==undefined) s+=ch;
          nextCh();
        }
      } else {
        type = "CHAR";
        s+=ch;
        nextCh();
      }
      if (value===undefined) value=s;
      return lastToken={type:type, str:s, value:value, startIdx:startIdx, endIdx:idx-1, lineNumber:lineNumber};
    };

    return {
      next : nextToken
    };
  }

  /**
   * Count brackets in a string - will be 0 if all are closed
   * @param {string} str String to process
   * @returns {number}
   */
  function countBrackets(str) {
    var lex = getLexer(str);
    var brackets = 0;
    var tok = lex.next();
    while (tok!==undefined) {
      if (tok.str=="(" || tok.str=="{" || tok.str=="[") brackets++;
      if (tok.str==")" || tok.str=="}" || tok.str=="]") brackets--;
      tok = lex.next();
    }
    return brackets;
  }

  /**
   * Try and get a prompt from Espruino - if we don't see one, issue Ctrl-C
   * and hope it comes back. Calls callback with first argument true if it
   * had to Ctrl-C out
   * @param {(hadToBreak?: boolean) => void} callback
   */
  function getEspruinoPrompt(callback) {
    if (Espruino.Core.Terminal!==undefined &&
        Espruino.Core.Terminal.getTerminalLine()==">") {
      console.log("Found a prompt... great!");
      return callback();
    }

    var receivedData = "";
    var prevReader = Espruino.Core.Serial.startListening(function (readData) {
      var bufView = new Uint8Array(readData);
      for(var i = 0; i < bufView.length; i++) {
        receivedData += String.fromCharCode(bufView[i]);
      }
      if (receivedData[receivedData.length-1] == ">") {
        if (receivedData.substr(-6)=="debug>") {
          console.log("Got debug> - sending Ctrl-C to break out and we'll be good");
          Espruino.Core.Serial.write('\x03');
        } else {
          if (receivedData == "\r\n=undefined\r\n>")
            receivedData=""; // this was just what we expected - so ignore it

          console.log("Received a prompt after sending newline... good!");
          clearTimeout(timeout);
          nextStep();
        }
      }
    });
    // timeout in case something goes wrong...
    var hadToBreak = false;
    var timeout = setTimeout(function() {
      console.log("Got "+JSON.stringify(receivedData));
      // if we haven't had the prompt displayed for us, Ctrl-C to break out of what we had
      console.log("No Prompt found, got "+JSON.stringify(receivedData[receivedData.length-1])+" - issuing Ctrl-C to try and break out");
      Espruino.Core.Serial.write('\x03');
      hadToBreak = true;
      timeout = setTimeout(function() {
        console.log("Still no prompt - issuing another Ctrl-C");
        Espruino.Core.Serial.write('\x03');
        nextStep();
      },500);
    },500);
    // when we're done...
    var nextStep = function() {
      // send data to console anyway...
      if(prevReader) prevReader(receivedData);
      receivedData = "";
      // start the previous reader listening again
      Espruino.Core.Serial.startListening(prevReader);
      // call our callback
      if (callback) callback(hadToBreak);
    };
    // send a newline, and we hope we'll see '=undefined\r\n>'
    Espruino.Core.Serial.write('\n');
  }

  /**
   * Return the value of executing an expression on the board.
   * @param {string} expressionToExecute
   * @param {(result: string) => void} callback
   * @param {Object} options
   * @param {boolean} options.exprPrintsResult If 'true' whatever the expression prints to
   * the console is returned, otherwise the actual value returned by the expression is returned.
   * @param {number} options.maxTimeout (default 30) is how long we're willing to wait (in seconds)
   * for data if Espruino keeps transmitting.
   */
  function executeExpression(expressionToExecute, callback, options) {
    options = options||{};
    options.exprPrintsResult = !!options.exprPrintsResult;
    options.maxTimeout = options.maxTimeout||30;
    var receivedData = "";
    var hadDataSinceTimeout = false;
    var allDataSent = false;

    var progress = 100;
    function incrementProgress() {
      if (progress==100) {
        Espruino.Core.Status.setStatus("Receiving...",100);
        progress=0;
      } else {
        progress++;
        Espruino.Core.Status.incrementProgress(1);
      }
    }

    function getProcessInfo(expressionToExecute, callback) {
      var prevReader = Espruino.Core.Serial.startListening(function (readData) {
        var bufView = new Uint8Array(readData);
        for(var i = 0; i < bufView.length; i++) {
          receivedData += String.fromCharCode(bufView[i]);
        }
        if(allDataSent) incrementProgress();
        // check if we got what we wanted
        var startProcess = receivedData.indexOf("< <<");
        var endProcess = receivedData.indexOf(">> >", startProcess);
        if(startProcess >= 0 && endProcess > 0){
          // All good - get the data!
          var result = receivedData.substring(startProcess + 4,endProcess);
          console.log("Got "+JSON.stringify(receivedData));
          // strip out the text we found
          receivedData = receivedData.substr(0,startProcess) + receivedData.substr(endProcess+4);
          // Now stop time timeout
          if (timeout) clearInterval(timeout);
          timeout = "cancelled";
          // Do the next stuff
          nextStep(result);
        } else if (startProcess >= 0) {
          // we got some data - so keep waiting...
          hadDataSinceTimeout = true;
        }
      });

      // when we're done...
      var nextStep = function(result) {
        Espruino.Core.Status.setStatus("");
        // start the previous reader listing again
        Espruino.Core.Serial.startListening(prevReader);
        // forward the original text to the previous reader
        if(prevReader) prevReader(receivedData);
        // run the callback
        callback(result);
      };

      var timeout = undefined;
      // Don't Ctrl-C, as we've already got ourselves a prompt with Espruino.Core.Utils.getEspruinoPrompt
      var cmd;
      if (options.exprPrintsResult)
        cmd  = '\x10print("<","<<");'+expressionToExecute+';print(">>",">")\n';
      else
        cmd  = '\x10print("<","<<",JSON.stringify('+expressionToExecute+'),">>",">")\n';

      Espruino.Core.Serial.write(cmd,
                                 undefined, function() {
        allDataSent = true;
        // now it's sent, wait for data
        var minTimeout = options.minTimeout || 2; // seconds - how long we wait if we're not getting data
        var pollInterval = 200; // milliseconds
        var timeoutSeconds = 0;
        if (timeout != "cancelled") {
          timeout = setInterval(function onTimeout(){
            incrementProgress();
            timeoutSeconds += pollInterval/1000;
            // if we're still getting data, keep waiting for up to 10 secs
            if (hadDataSinceTimeout && timeoutSeconds<options.maxTimeout) {
              hadDataSinceTimeout = false;
            } else if (timeoutSeconds > minTimeout) {
              // No data yet...
              // OR we keep getting data for > options.maxTimeout seconds
              clearInterval(timeout);
              console.warn("No result found for "+JSON.stringify(expressionToExecute)+" - just got "+JSON.stringify(receivedData));
              nextStep(undefined);
            }
          }, pollInterval);
        }
      });
    }

    if(Espruino.Core.Serial.isConnected()){
      Espruino.Core.Utils.getEspruinoPrompt(function() {
        getProcessInfo(expressionToExecute, callback);
      });
    } else {
      console.error("executeExpression called when not connected!");
      callback(undefined);
    }
  }

  /**
   * Download a file - storageFile or normal file
   * @param {string} fileName Path to file to download
   * @param {(content?: string) => void} callback Call back with contents of file, or undefined if no content
   * @param {Object} options {fs:true} to download from SD card rather than Storage
   */
  function downloadFile(fileName, callback, options) {
    options = options||{};
    let exOptions = {exprPrintsResult:true, maxTimeout:600}; // ten minute timeout
    let cmd = options.fs ? /*SD card*/`(function(filename) {
var f = E.openFile(filename,"r"), d = f.read(${CHUNKSIZE});
while (d!==undefined) {console.log(btoa(d));d=f.read(${CHUNKSIZE});}
})(${JSON.stringify(fileName)});`: /*Storage*/`(function(filename) {
var s = require("Storage").read(filename);
if(s){ for (var i=0;i<s.length;i+=${CHUNKSIZE}) console.log(btoa(s.substr(i,${CHUNKSIZE}))); } else {
var f=require("Storage").open(filename,"r");var d=f.read(${CHUNKSIZE});
while (d!==undefined) {console.log(btoa(d));d=f.read(${CHUNKSIZE});}
}})(${JSON.stringify(fileName)});`
    executeExpression(cmd, function(contents) {
        if (contents===undefined) callback();
        else callback(atob(contents));
      }, exOptions);
  }

  /**
   * Get the JS needed to upload a file
   * @param {string} fileName Path to file to upload
   * @param {string} contents Contents of the file being uploaded
   * @param {Object} options {fs:true} to download from SD card rather than Storage
   * @returns {string} JS code needed to upload file
   */
  function getUploadFileCode(fileName, contents, options) {
    options = options||{};
    var js = [];
    if ("string" != typeof contents)
      throw new Error("Expecting a string for contents");
    if (fileName.length==0 || fileName.length>28)
      throw new Error("Invalid filename length");
    var fn = JSON.stringify(fileName);
    if (options.fs) { // upload to fs
      js.push(`var _ul = E.openFile(${fn},"w")`);
      for (var i=0;i<contents.length;i+=CHUNKSIZE) {
        var part = contents.substr(i,CHUNKSIZE);
        js.push(`_ul.write(atob(${JSON.stringify(btoa(part))}))`);
      }
      js.push(`_ul.close();delete _ul;`);
    } else { // upload to Storage
      for (var i=0;i<contents.length;i+=CHUNKSIZE) {
        var part = contents.substr(i,CHUNKSIZE);
        js.push(`require("Storage").write(${fn},atob(${JSON.stringify(btoa(part))}),${i}${(i==0)?","+contents.length:""})`);
      }
    }
    return js.join("\n");
  }

  /**
   * @param {string} fileName Path to file to upload
   * @param {string} contents Contents of the file being uploaded
   * @param {(result: string) => void} callback
   * @param {Object} options {fs:true} to download from SD card rather than Storage
   */
  function uploadFile(fileName, contents, callback, options) {
    var js = getUploadFileCode(fileName, contents, options).replace(/\n/g,"\n\x10");
    // executeStatement prepends other code onto the command, so don't add `\x10` at the start of line as then it just ends up in the middle of what's sent
    Espruino.Core.Utils.executeStatement(js, callback);
  }

  /**
   * Taking a standard semver type string, parse and convert to float
   * @param {string} version Version string eg. v1.2.3
   * @returns {number}
   */
  function versionToFloat(version) {
    return parseFloat(version.trim().replace("v","."));
  }

  /**
   * Perform an XHR request
   * @param {string} url
   * @param {(data?:string) => void} callback Returning data or 'undefined' on error.
   * @param {Object} options HTTP request options
   * @param {'GET'|'POST'} options.method HTTP method
   * @param {Object} options.data Object to be passed as form data
   */
  function getURL(url, callback, options) {
    if (options===undefined) options={};
    if (!options.method) options.method="GET";
    Espruino.callProcessor("getURL", { url : url, data : undefined, method : options.method }, function(result) {
      if (result.data!==undefined) {
        callback(result.data);
      } else {
        // encode data to send
        var formData = null;
        if (options.data)
          formData = Object.keys(options.data).map(key=> encodeURIComponent(key)+"="+encodeURIComponent(options.data[key])).join("&");
        // do the request
        var resultUrl = result.url ? result.url : url;
        if (typeof process === 'undefined') {
          // Web browser
          var xhr = new XMLHttpRequest();
          xhr.responseType = "text";
          xhr.addEventListener("load", function () {
            if (xhr.status === 200) {
              callback(xhr.response.toString());
            } else {
              console.error("getURL("+JSON.stringify(url)+") error : HTTP "+xhr.status);
              callback(undefined);
            }
          });
          xhr.addEventListener("error", function (e) {
            console.error("getURL("+JSON.stringify(url)+") error "+e);
            callback(undefined);
          });
          xhr.open(options.method, url, true);
          if (formData!==null)
            xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
          xhr.send(formData);
        } else {
          // Node.js
          if (resultUrl.substr(0,4)=="http") {
            var m = resultUrl[4]=="s"?"https":"http";

            var http_options;
            if (Espruino.Config.MODULE_PROXY_ENABLED) {
              http_options = {
                host: Espruino.Config.MODULE_PROXY_URL,
                port: Espruino.Config.MODULE_PROXY_PORT,
                path: resultUrl,
                method: options.method
              };
            } else {
              var p = require('url').parse(resultUrl);
              http_options = {
                host: p.host,
                port: p.port,
                path: p.path,
                method: options.method
              };
            }
            if (formData!==null)
              http_options.headers = { "Content-Type" : "application/x-www-form-urlencoded" };
            console.log(http_options);
            var req = require(m).request(http_options, function(res) {
              if (res.statusCode != 200) {
                console.log("Espruino.Core.Utils.getURL: got HTTP status code "+res.statusCode+" for "+url);
                return callback(undefined);
              }
              var data = "";
              res.on("data", function(d) { data += d; });
              res.on("end", function() {
                callback(data);
              });
            }).on('error', function(err) {
              console.error("getURL("+JSON.stringify(url)+") error : "+err);
              callback(undefined);
            });
            if (formData!==null)
              req.write(formData);
            req.end();
          } else {
            require("fs").readFile(resultUrl, function(err, d) {
              if (err) {
                console.error(err);
                callback(undefined);
              } else
                callback(d.toString());
            });
          }
        }
      }
    });
  }

  /**
   * GET's a URL as a Binary file
   * @param {string} url
   * @param {(err: string, data?: ArrayBuffer) => void} callback
   */
  function getBinaryURL(url, callback) {
    console.log("Downloading "+url);
    Espruino.Core.Status.setStatus("Downloading binary...");
    var xhr = new XMLHttpRequest();
    xhr.responseType = "arraybuffer";
    xhr.addEventListener("load", function () {
      if (xhr.status === 200) {
        Espruino.Core.Status.setStatus("Done.");
        var data = xhr.response;
        callback(undefined,data);
      } else
        callback("Error downloading file - HTTP "+xhr.status);
    });
    xhr.addEventListener("error", function () {
      callback("Error downloading file");
    });
    xhr.open("GET", url, true);
    xhr.send(null);
  }

  /**
   * @param {string} url
   * @param {(data?: any) => void} callback {data} will return 'undefined' on error
   */
  function getJSONURL(url, callback) {
    getURL(url, function(d) {
      if (!d) return callback(d);
      var j;
      try { j=JSON.parse(d); } catch (e) { console.error("Unable to parse JSON",d); }
      callback(j);
    });
  }

  /**
   * @param {string} text
   * @returns {boolean}
   */
  function isURL(text) {
    return (new RegExp( '(http|https)://' )).test(text);
  }

  /**
   * Are we served from a secure location so we're forced to use a secure get?
   * @returns {boolean}
   */
  function needsHTTPS() {
    if (typeof window==="undefined" || !window.location) return false;
    return window.location.protocol=="https:";
  }

  /**
   * @param {Object} options
   * @param {string} options.id ID to ensure that subsequent calls with the same ID remember the last used directory.
   * @param {'text' | 'arraybuffer'} options.type (default 'text') Callback with either 'text' or 'arraybuffer'
   * @param {string | undefined} options.mimeType Optional comma-separated list of accepted mime types for files or extensions (eg. ".js,application/javascript")
   * @param {(contents: ArrayBuffer | string, mimeType: string, fileName: string) => void} callback
   */
  function fileOpenDialog(options, callback) {
    function readerLoaded(e,files,i,options,fileLoader) {
    /* Doing reader.readAsText(file) interprets the file as UTF8
      which we don't want. */
      var result;
      if (options.type=="text") {
        var a = new Uint8Array(e.target.result);
        result = "";
        for (var j=0;j<a.length;j++)
          result += String.fromCharCode(a[j]);
      } else
        result = e.target.result;
      fileLoader.callback(result, files[i].type, files[i].name);


      // If there's a file left to load
      if (i < files.length - 1 && options.multi) {
        // Load the next file
        setupReader(files, i+1,options,fileLoader);
      } else {
        fileLoader.callback = undefined;
      }
    }

    function setupReader(files,i,options,fileLoader) {
      var reader = new FileReader();
      reader.onload = function(e) {
        readerLoaded(e,files,i,options,fileLoader)
      };
      if (options.type=="text" || options.type=="arraybuffer") reader.readAsArrayBuffer(files[i]);
      else throw new Error("fileOpenDialog: unknown type "+options.type);
    }

    options = options||{};
    options.type = options.type||"text";
    options.id = options.id||"default";
    var loaderId = options.id+"FileLoader";
    var fileLoader = document.getElementById(loaderId);
    if (!fileLoader) {
      fileLoader = document.createElement("input");
      fileLoader.setAttribute("id", loaderId);
      fileLoader.setAttribute("type", "file");
      fileLoader.setAttribute("style", "z-index:-2000;position:absolute;top:0px;left:0px;");
      if (options.multi)
        fileLoader.setAttribute("multiple","multiple");
      if (options.mimeType)
        fileLoader.setAttribute("accept",options.mimeType);
      fileLoader.addEventListener('click', function(e) {
        e.target.value = ''; // handle repeated upload of the same file
      });
      fileLoader.addEventListener('change', function(e) {
        if (!fileLoader.callback) return;

        var files = e.target.files;
        setupReader(files,0,options,fileLoader);

      }, false);
      document.body.appendChild(fileLoader);
    }
    fileLoader.callback = callback;
    fileLoader.click();
  }

  /**
   * Save a file with a save file dialog
   * @param {string} data
   * @param {string} filename
   * @param {(savedFileName: string) => void} callback only called in chrome app case when we know the filename
   */
  function fileSaveDialog(data, filename, callback) {
    function errorHandler() {
      Espruino.Core.Notifications.error("Error Saving", true);
    }

    var rawdata = new Uint8Array(data.length);
    for (var i=0;i<data.length;i++) rawdata[i]=data.charCodeAt(i);
    var fileBlob = new Blob([rawdata.buffer], {type: "text/plain"});

    if (typeof chrome !== 'undefined' && chrome.fileSystem) {
      // Chrome Web App / NW.js
      chrome.fileSystem.chooseEntry({type: 'saveFile', suggestedName:filename}, function(writableFileEntry) {
        if (!writableFileEntry) return; // cancelled
        writableFileEntry.createWriter(function(writer) {
          writer.onerror = errorHandler;
          // when truncation has finished, write
          writer.onwriteend = function(e) {
            writer.onwriteend = function(e) {
              console.log('FileWriter: complete');
              if (callback) callback(writableFileEntry.name);
            };
            console.log('FileWriter: writing');
            writer.write(fileBlob);
          };
          // truncate
          console.log('FileWriter: truncating');
          writer.truncate(fileBlob.size);
        }, errorHandler);
      });
    } else {
      var a = document.createElement("a");
      var url = URL.createObjectURL(fileBlob);
      a.href = url;
      a.download = filename;
      document.body.appendChild(a);
      a.click();
      setTimeout(function() {
          document.body.removeChild(a);
          window.URL.revokeObjectURL(url);
      }, 0);
    }
  }

  /** Bluetooth device names that we KNOW run Espruino */
  var recongisedDevices = [
    "Puck.js", "Pixl.js", "MDBT42Q", "Espruino", "Badge", "Thingy",
    "RuuviTag", "iTracker", "Smartibot", "Bangle.js", "Micro:bit"
  ];

  /** Returns a list of recognised bluetooth devices */
  function recognisedBluetoothDevices() {
    return recongisedDevices;
  }

  /**
   * Add a new device to the list of recognised devices
   * @param {string} name
   */
  function addRecognisedDeviceName(name){
    if (name) recongisedDevices.push(name);
  }

  /** List of recognised device addresses */
  var recognisedDeviceAddresses = [];

  /**
   * Add a new recognised device address to 'recognisedDeviceAddresses'
   * @param {string} address
   */
  function addRecognisedDeviceAddress(address){
    if (address) recognisedDeviceAddresses.push(address);
  }

  /**
   * If we can't find service info, add devices based only on their name/address
   * @param {string} name
   * @param {string} address
   * @returns {boolean} Returns true if there was a recognised device
   */
  function isRecognisedBluetoothDevice(name, address) {
    if (address && recognisedDeviceAddresses.includes(address)) return true;
    if (!name) return false;
    var devs = recognisedBluetoothDevices();
    for (var i=0;i<devs.length;i++)
      if (name.substr(0, devs[i].length) == devs[i])
        return true;
    return false;
  }

  /**
   * Get the version from the manifest.json
   * @param {(version: string) => void} callback
   */
  function getVersion(callback) {
    var xmlhttp = new XMLHttpRequest();
    var path = (window.location.pathname.indexOf("relay")>=0)?"../":"";
    xmlhttp.open('GET', path+'manifest.json');
    xmlhttp.onload = function (e) {
        var manifest = JSON.parse(xmlhttp.responseText);
        callback(manifest.version);
    };
    xmlhttp.send(null);
  }

  /** @param {(version: string) => void} callback */
  function getVersionInfo(callback) {
    getVersion(function(version) {
      var platform = "Web App";
      if (isNWApp())
        platform = "NW.js Native App";
      if (isChromeWebApp())
        platform = "Chrome App";

      callback(platform+", v"+version);
    });
  }

  /**
   * @param {string} str
   * @returns {ArrayBuffer}
   */
  function stringToArrayBuffer(str) {
    var buf=new Uint8Array(str.length);
    for (var i=0; i<str.length; i++) {
      var ch = str.charCodeAt(i);
      if (ch>=256) {
        console.warn("stringToArrayBuffer got non-8 bit character - code "+ch);
        ch = "?".charCodeAt(0);
      }
      buf[i] = ch;
    }
    return buf.buffer;
  }

  /**
   * @param {string} str
   * @returns {Buffer}
   */
  function stringToBuffer(str) {
    var buf = Buffer.alloc(str.length);
    for (var i = 0; i < buf.length; i++) {
      buf.writeUInt8(str.charCodeAt(i), i);
    }
    return buf;
  }

  /**
   * @param {string} dv
   * @returns {ArrayBuffer}
   */
  function dataViewToArrayBuffer(dv) {
    var bufView = new Uint8Array(dv.byteLength);
    for (var i = 0; i < bufView.length; i++) {
      bufView[i] = dv.getUint8(i);
    }
    return bufView.buffer;
  }

  /**
   * @param {ArrayBuffer} buf
   * @returns {string}
   */
  function arrayBufferToString(buf) {
    return String.fromCharCode.apply(null, new Uint8Array(buf));
  }

  /**
   * Parses a very relaxed version of a JSON string into JS, taking into account some of the
   * issues with Espruino's JSON from 2v04 and before
   * @param {string} str
   * @returns {any}
   */
  function parseRJSON(str) {
    let lex = getLexer(str);
    let tok = lex.next();
    function match(s) {
      if (tok.str!=s) throw new Error("Expecting "+s+" got "+JSON.stringify(tok.str));
      tok = lex.next();
    }

    function recurse() {
      while (tok!==undefined) {
        if (tok.type == "NUMBER") {
          let v = parseFloat(tok.str);
          tok = lex.next();
          return v;
        }
        if (tok.str == "-") {
          tok = lex.next();
          let v = -parseFloat(tok.str);
          tok = lex.next();
          return v;
        }
        if (tok.type == "STRING") {
          let v = tok.value;
          tok = lex.next();
          return v;
        }
        if (tok.type == "ID") switch (tok.str) {
          case "true" : tok = lex.next(); return true;
          case "false" : tok = lex.next(); return false;
          case "null" : tok = lex.next(); return null;
          case "NaN" : tok = lex.next(); return NaN;
        }
        if (tok.str == "[") {
          tok = lex.next();
          let arr = [];
          while (tok.str != ']') {
            arr.push(recurse());
            if (tok.str != ']') match(",");
          }
          match("]");
          return arr;
        }
        if (tok.str == "{") {
          tok = lex.next();
          let obj = {};
          while (tok.str != '}') {
            let key = tok.type=="STRING" ? tok.value : tok.str;
            tok = lex.next();
            match(":");
            obj[key] = recurse();
            if (tok.str != '}') match(",");
          }
          match("}");
          return obj;
        }
        match("EOF");
      }
    }

    let json = undefined;
    try {
      json = recurse();
    } catch (e) {
      console.log("RJSON parse error", e);
    }
    return json;
  }

  /**
   * Escape a string (like JSON.stringify) so that Espruino can understand it,
   * however use \0,\1,\x,etc escapes whenever possible to make the String as small
   * as it can be. On Espruino with UTF8 support, not using \u.... also allows it
   * to use non-UTF8 Strings which are more efficient.
   * @param {string} txt
   * @returns {string}
   */
  function toJSONishString(txt) {
    let js = "\"";
    for (let i=0;i<txt.length;i++) {
      let ch = txt.charCodeAt(i);
      let nextCh = (i+1<txt.length ? txt.charCodeAt(i+1) : 0); // 0..255
      if (ch<8) {
          // if the next character is a digit, it'd be interpreted
          // as a 2 digit octal character, so we can't use `\0` to escape it
          if (nextCh>='0'.charCodeAt() && nextCh<='7'.charCodeAt()) js += "\\x0"+ch;
          else js += "\\"+ch;
      } else if (ch==8) js += "\\b";
      else if (ch==9) js += "\\t";
      else if (ch==10) js += "\\n";
      else if (ch==11) js += "\\v";
      else if (ch==12) js += "\\f";
      else if (ch==34) js += "\\\""; // quote
      else if (ch==92) js += "\\\\"; // slash
      else if (ch<32 || ch==127 || ch==173 ||
               ((ch>=0xC2) && (ch<=0xF4))) // unicode start char range
          js += "\\x"+ ((ch & 255) | 256).toString(16).substring(1);
      else if (ch>255)
          js += "\\u"+ ((ch & 65535) | 65536).toString(16).substring(1);
      else js += txt[i];
    }
    js += "\"";
    //let b64 = "atob("+JSON.stringify(Espruino.Core.Utils.btoa(txt))+")";
    return js;
  }

  /**
   * Convert a normal JS string (one char per character) to a string of UTF8 bytes
   * (passes anything 0..255 straight through)
   * @param {string} str
   * @returns {string}
   */
  function asUTF8Bytes(str) {
    var result = "";
    var bytes = String.fromCharCode;
    for (var i=0; i < str.length; i++) {
      var charcode = str.charCodeAt(i);
      // checking below 128 would ensure better compatibility with UTF8 (but breaks pretokenised code)
      if (charcode < 256) result += bytes(charcode);
      else if (charcode < 0x800) {
        result += bytes(0xc0 | (charcode >> 6),
                        0x80 | (charcode & 0x3f));
      } else if (charcode < 0xd800 || charcode >= 0xe000) {
        result += bytes(0xe0 | (charcode >> 12),
                    0x80 | ((charcode>>6) & 0x3f),
                    0x80 | (charcode & 0x3f));
      } else { // surrogate pair
        i++;
        charcode = ((charcode&0x3ff)<<10)|(str.charCodeAt(i)&0x3ff)
        result += bytes(0xf0 | (charcode >>18),
                        0x80 | ((charcode>>12) & 0x3f),
                        0x80 | ((charcode>>6) & 0x3f),
                        0x80 | (charcode & 0x3f));
      }
    }
    return result;
  }

  /**
   * Does the given string contain only ASCII characters?
   * @param {string} str
   * @returns {boolean}
   */
  function isASCII(str) {
    for (var i=0;i<str.length;i++) {
      var c = str.charCodeAt(i);
      if ((c<32 || c>126) &&
          (c!=10) && (c!=13) && (c!=9)) return false;
    }
    return true;
  }

  /**
   * btoa (base64 encoder) that works on utf8
   * @param {string} input
   * @returns {string}
   */
  function btoa(input) {
    var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
    var out = "";
    var i=0;
    while (i<input.length) {
      var octet_a = 0|input.charCodeAt(i++);
      var octet_b = 0;
      var octet_c = 0;
      var padding = 0;
      if (i<input.length) {
        octet_b = 0|input.charCodeAt(i++);
        if (i<input.length) {
          octet_c = 0|input.charCodeAt(i++);
          padding = 0;
        } else
          padding = 1;
      } else
        padding = 2;
      var triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;
      out += b64[(triple >> 18) & 63] +
             b64[(triple >> 12) & 63] +
             ((padding>1)?'=':b64[(triple >> 6) & 63]) +
             ((padding>0)?'=':b64[triple & 63]);
    }
    return out;
  }

  /**
   * atob (base64 decoder)
   * @param {string} input
   * @returns {string}
   */
  function atob(input) {
    // Copied from https://github.com/strophe/strophejs/blob/e06d027/src/polyfills.js#L149
    // This code was written by Tyler Akins and has been placed in the
    // public domain.  It would be nice if you left this header intact.
    // Base64 code from Tyler Akins -- http://rumkin.com
    var keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';

    var output = '';
    var chr1, chr2, chr3;
    var enc1, enc2, enc3, enc4;
    var i = 0;
    // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
    input = input.replace(/[^A-Za-z0-9+/=]/g, '');
    while (i < input.length) {
      enc1 = keyStr.indexOf(input.charAt(i++));
      enc2 = keyStr.indexOf(input.charAt(i++));
      enc3 = keyStr.indexOf(input.charAt(i++));
      enc4 = keyStr.indexOf(input.charAt(i++));

      chr1 = (enc1 << 2) | (enc2 >> 4);
      chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
      chr3 = ((enc3 & 3) << 6) | enc4;

      output = output + String.fromCharCode(chr1);

      if (enc3 !== 64) {
        output = output + String.fromCharCode(chr2);
      }
      if (enc4 !== 64) {
        output = output + String.fromCharCode(chr3);
      }
    }
    return output;
  }

  Espruino.Core.Utils = {
      init : init,
      isWindows : isWindows,
      isLinux : isLinux,
      isAppleDevice : isAppleDevice,
      isChrome : isChrome,
      isFirefox : isFirefox,
      getChromeVersion : getChromeVersion,
      isNWApp : isNWApp,
      isChromeWebApp : isChromeWebApp,
      isProgressiveWebApp : isProgressiveWebApp,
      hasNativeTitleBar : hasNativeTitleBar,
      isCrossOriginSubframe : isCrossOriginSubframe,
      isARMThumb : isARMThumb,
      escapeHTML : escapeHTML,
      fixBrokenCode : fixBrokenCode,
      getSubString : getSubString,
      getLexer : getLexer,
      countBrackets : countBrackets,
      getEspruinoPrompt : getEspruinoPrompt,
      executeExpression : function(expr,callback,options) { executeExpression(expr, callback, Object.assign({exprPrintsResult:false},options)); },
      executeStatement : function(statement,callback,options) { executeExpression(statement, callback, Object.assign({exprPrintsResult:true},options)); },
      downloadFile : downloadFile, // (fileName, callback, options)
      getUploadFileCode : getUploadFileCode, //(fileName, contents, options);
      uploadFile : uploadFile, // (fileName, contents, callback, options)
      versionToFloat : versionToFloat,
      getURL : getURL,
      getBinaryURL : getBinaryURL,
      getJSONURL : getJSONURL,
      isURL : isURL,
      needsHTTPS : needsHTTPS,
      fileOpenDialog : fileOpenDialog,
      fileSaveDialog : fileSaveDialog,
      recognisedBluetoothDevices : recognisedBluetoothDevices,
      addRecognisedDeviceName : addRecognisedDeviceName,
      addRecognisedDeviceAddress : addRecognisedDeviceAddress,
      isRecognisedBluetoothDevice : isRecognisedBluetoothDevice,
      getVersion : getVersion,
      getVersionInfo : getVersionInfo,
      stringToArrayBuffer : stringToArrayBuffer,
      stringToBuffer : stringToBuffer,
      dataViewToArrayBuffer : dataViewToArrayBuffer,
      arrayBufferToString : arrayBufferToString,
      parseRJSON : parseRJSON,
      parseJSONish : parseRJSON, // deprecated
      toJSONishString : toJSONishString,
      asUTF8Bytes : asUTF8Bytes,
      isASCII : isASCII,
      btoa : btoa,
      atob : atob
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/core/config.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Central place to store and retrieve Options

  To use this, on your plugin's `init` function, do something like the
  following:

  Espruino.Core.Config.add("MAX_FOOBARS", {
    section : "Communications",           // Heading this will come under in the config screen
    name : "Foobars",                     // Nice name
    description : "How many foobars?",    // More detail about this
    type : "int"/"boolean"/"string"/{ value1:niceName, value2:niceName },
    defaultValue : 20,
    onChange : function(newValue) { ... }
  });

    * onChange will be called whenever the value changes from the default
      (including when it is loaded)

  Then use:

  Espruino.Config.MAX_FOOBARS in your code
 ------------------------------------------------------------------
**/
"use strict";
(function() {

  /** See addSection and getSections */
  var builtinSections = {};

  function _get(callback) {
    if (typeof chrome !== 'undefined' && chrome.storage) {
      chrome.storage.sync.get( "CONFIGS", function (data) {
        var value = data["CONFIGS"];
        console.log("GET chrome.storage.sync = "+JSON.stringify(value));
        callback(value);
      });
    } else if (typeof window !== 'undefined' && window.localStorage) {
      var data = {};
      var value = window.localStorage.getItem("CONFIG");
      console.log("GET window.localStorage = "+JSON.stringify(value));
      try {
        data = JSON.parse(value);
      } catch (e) {
        console.log("Invalid config data");
      }
      callback(data);
    } else if (typeof document != "undefined") {
      var data = {};
      var cookie = document.cookie;
      if (cookie!==undefined && cookie.indexOf("CONFIG=")>=0) {
        cookie = cookie.substring(cookie.indexOf("CONFIG=")+7);
        cookie = cookie.substring(0,cookie.indexOf(";"));
        try {
          var json = atob(cookie);
          data = JSON.parse(json);
        } catch (e) {
          console.log("Got ", e, " while reading info");
        }
      }
      callback(data);
    } else {
      callback({});
    }
  }

  function _set(data) {
    if (typeof chrome !== 'undefined' && chrome.storage) {
      console.log("SET chrome.storage.sync = "+JSON.stringify(data,null,2));
      chrome.storage.sync.set({ CONFIGS : data });
    } else if (typeof window !== 'undefined' && window.localStorage) {
      console.log("SET window.localStorage = "+JSON.stringify(data,null,2));
      window.localStorage.setItem("CONFIG",JSON.stringify(data));
    } else if (typeof document != "undefined") {
      document.cookie = "CONFIG="+btoa(JSON.stringify(data));
    }
  }

  function loadConfiguration(callback) {
    _get(function (value) {
      for (var key in value) {
        if (key=="set") continue;
        Espruino.Config[key] = value[key];
        if (Espruino.Core.Config.data[key] !== undefined &&
            Espruino.Core.Config.data[key].onChange !== undefined)
          Espruino.Core.Config.data[key].onChange(value[key]);
      }
      if (callback!==undefined)
        callback();
    });
  }

  function init() {
    addSection("General", { sortOrder:100, description: "General Web IDE Settings" });
    addSection("Communications", { sortOrder:200, description: "Settings for communicating with the Espruino Board" });
    addSection("Board", { sortOrder:300, description: "Settings for the Espruino Board itself" });
  }

  function add(name, options) {
    Espruino.Core.Config.data[name] = options;
    if (Espruino.Config[name] === undefined)
      Espruino.Config[name] = options.defaultValue;
  }

  /**
   * Add a section (or information on the page).
   * @param {string} name 
   * @param {Object} options 
   * @param {number} options.sortOrder a number used for sorting
   * @param {string} options.description
   * @param {() => void | undefined} options.getHTML
   */
  function addSection(name, options) {
    options.name = name;
    builtinSections[name] = options;
  }

  /** Get an object containing the information on a section used in configs */
  function getSection(name) {
    if (builtinSections[name]!==undefined)
      return builtinSections[name];
    // not found - but we warned about this in getSections
    return {
      name : name
    };
  }

  /** Get an object containing information on all 'sections' used in all the configs */
  function getSections() {
    var sections = [];
    // add sections we know about
    for (var name in builtinSections)
      sections.push(builtinSections[name]);
    // add other sections
    for (var i in Espruino.Core.Config.data) {
      var c = Espruino.Core.Config.data[i];

      var found = false;
      for (var s in sections)
        if (sections[s].name == c.section)
          found = true;

      if (!found) {
        console.warn("Section named "+c.section+" was not added with Config.addSection");
        sections[c.section] = {
            name : c.section,
            sortOrder : 0
        };
      }
    }
    // Now sort by sortOrder
    sections.sort(function (a,b) { return a.sortOrder - b.sortOrder; });

    return sections;
  }

  Espruino.Config = {};
  Espruino.Config.set = function (key, value) {
    if (Espruino.Config[key] != value) {
      Espruino.Config[key] = value;
      // Do the callback
      if (Espruino.Core.Config.data[key] !== undefined &&
          Espruino.Core.Config.data[key].onChange !== undefined)
        Espruino.Core.Config.data[key].onChange(value);
      // Save to synchronized storage...
      var data = {};
      for (var key in Espruino.Config)
        if (key != "set")
          data[key] = Espruino.Config[key];
      _set(data);
    }
  };

  /** Clear all settings */
  function clearAll() {
    _set({});
    for (var name in Espruino.Core.Config.data) {
      var options = Espruino.Core.Config.data[name];
      Espruino.Config[name] = options.defaultValue;
    }
  }

  Espruino.Core.Config = {
      /** special - called before init */
      loadConfiguration : loadConfiguration, 

      init : init,
      add : add,
      data : {},


      addSection : addSection,
      getSection : getSection,
      getSections : getSections,

      /** Clear all settings */
      clearAll : clearAll, 
  };

})();
/* --------------------------------------------------------------
         js/core/html.js
   -------------------------------------------------------------- */
/**
 Copyright 2020 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Utilities for HTML wrangling
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {

  }

  function markdownToHTML(markdown) {
    var html = markdown;
    //console.log(JSON.stringify(html));
    html = html.replace(/([^\n]*)\n=====*\n/g, "<h1>$1</h1>"); // heading 1
    html = html.replace(/([^\n]*)\n-----*\n/g, "<h2>$1</h2>"); // heading 2
    html = html.replace(/\n\s*\n/g, "\n<br/><br/>\n"); // newlines
    html = html.replace(/\*\*(.*)\*\*/g, "<strong>$1</strong>"); // bold
    html = html.replace(/```(.*)```/g, "<span class=\"code\">$1</span>"); // code
    //console.log(JSON.stringify(html));
    return html;
  };

  /** Make an HTML table out of a simple key/value object */
  function htmlTable(obj) {
    var html = '<table>';
    for (var key in obj) {
      html += '<tr><th>'+Espruino.Core.Utils.escapeHTML(key)+'</th><td>'+Espruino.Core.Utils.escapeHTML(obj[key])+'</td></tr>';
    }
    return html + '</table>';
  }

  /* Return the HTML to display a loading indicator */
  function htmlLoading() {
    // <span class="spin-animation">&#x21bb;</span>
    return '<h2 class="list__no-results">Loading...</h2>';
  }

  // Convert a HTML element list to an array
  function domToArray(collection) {
    return [].slice.call(collection);
  }

  // turn the HTML string into an HTML element
  function domElement(str) {
    var div = document.createElement('div');
    div.innerHTML = str.trim();
    return div.firstChild;
  }

  /* Return the HTML to display a list.
     items is an array of { icon, title, description(optional), callback(optional), right:[{icon,title,callback}] } */
  function domList(items, options) {
    var domList = Espruino.Core.HTML.domElement('<ul class="list"></ul>');

    var itemAttribs = 'style="margin-bottom: 4px;"';

    items.forEach(function(item) {
      var domItem = Espruino.Core.HTML.domElement('<li class="list__item" '+itemAttribs+'></li>');
      var html = item.right ?
        ('<span style="padding:0px;position: relative;display: inline-block;width: 100%;"'):
        ('<a class="button '+(item.icon?"button--icon":"")+' button--wide"');
      html += ' title="'+ item.title +'" >';
      if (item.icon)
        html += '<i class="'+item.icon+' lrg button__icon"></i>';
      html += '<div class="list__item__name">'+ item.title+'</div>';
      if (item.description)
        html += '<div class="list__item__desc">' + item.description + '</div>';
      html += '</div>' + (item.right ? '</span>':'</a>');
      var domBtn = Espruino.Core.HTML.domElement(html);
      if (item.right)
        item.right.forEach(i=>{
          var e = Espruino.Core.HTML.domElement(
            '<a title="'+i.title+'" class="'+i.icon+' sml button__icon button list__itemicon-right" style="float: right;"></a>'
          );
          if (i.callback) e.addEventListener("click",function(e) {
            e.stopPropagation();
            i.callback(e);
          });
          domBtn.prepend(e);
        });

      domBtn.addEventListener('click',function(e) {
        e.stopPropagation();
        if (item.callback)
          item.callback(e);
      });
      domItem.append(domBtn);
      domList.append(domItem);
    });
    return domList;
  }

  Espruino.Core.HTML = {
      markdownToHTML : markdownToHTML,

      htmlTable : htmlTable,
      htmlLoading : htmlLoading,

      domToArray : domToArray,
      domElement : domElement,
      domList: domList
  };
}());
/* --------------------------------------------------------------
         js/core/notifications.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Display Notifications
 ------------------------------------------------------------------
**/
"use strict";

(function() {

  function init()
  {
    toastr.options = {
      "closeButton": false,
      "debug": false,
      "positionClass": "toast-bottom-right",
      "onclick": null,
      "showDuration": "300",
      "hideDuration": "1000",
      "timeOut": "5000",
      "extendedTimeOut": "5000",
      "showEasing": "swing",
      "hideEasing": "linear",
      "showMethod": "fadeIn",
      "hideMethod": "fadeOut"
    }
  }

  Espruino.Core.Notifications = {
      init : init,
      success: function(msg, setStatus)
      {
        console.log("[success] "+msg);;
        toastr.success(msg);
        Espruino.callProcessor("notification",{type:"success",msg:msg},function(){});
        if(setStatus)
          Espruino.Core.Status.setStatus(msg);
      },
      error: function(msg, setStatus)
      {
        console.error("[notify_error] "+msg);;
        toastr.error(msg);
        Espruino.callProcessor("notification",{type:"error",msg:msg},function(){});
        if(setStatus)
          Espruino.Core.Status.setStatus(msg);
      },
      warning: function(msg, setStatus)
      {
        console.warn("[notify_warn] "+msg);;
        Espruino.callProcessor("notification",{type:"warning",msg:msg},function(){});
        toastr.warning(msg);
        if(setStatus)
          Espruino.Core.Status.setStatus(msg);
      },
      info: function(msg, setStatus)
      {
        console.log("[notify_info] "+msg);;
        Espruino.callProcessor("notification",{type:"info",msg:msg},function(){});
        toastr.info(msg);
        if(setStatus)
          Espruino.Core.Status.setStatus(msg);
      }
  };

})();
/* --------------------------------------------------------------
         js/core/status.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Status menu
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var progressAmt, progressMax = 0;
  var statusWindow;

  function init()
  {
    $("<h5 class='status__message'>Ready...</h5>").appendTo(".status__left");
    $("<h5 class='status__port'></h5>").appendTo(".status__right");
    $("<div class='status__progress'><div class='status__progress-bar' /></div>").appendTo(".status__right").hide();
    Espruino.addProcessor("connected", function(data, callback) {
      if (data) {
        var name = data.port;
        if (data.portName) name = data.portName;
        setConnectedPort(name);
      }
      callback(data);
    });

    Espruino.addProcessor("disconnected", function(data, callback) {
      setConnectedPort("");
      callback(data);
    });
  }

  function setStatus(text, progress) {
    console.log(">>> "+ text);
    //var progressBox = $(".progress");
    //var statusBox = $(".progress .status");
    //var progressIndicator = $(".progress .indicator");
    $(".status__message").html(text);

    if (progress === undefined) {
      $(".status__progress-bar").width(0);
      $(".status__progress").hide();
      progressMax = 0;
    } else {
      $(".status__progress").show();
      if (progress < 1) progress = 1;
      progressAmt = 0;
      progressMax = progress;
    }

    //if(Espruino.Core.Status.statusSoundOn) {Espruino.Core.Status.sendSound("status"); }
    //if(Espruino.Core.Status.statusSpeakOn) {Espruino.Core.Status.speak(text); }
  };

  function hasProgress() {
    return progressMax > 0;
  };

  function incrementProgress(amount) {
    if (!hasProgress()) return;
    progressAmt += amount;
    var progressPercent = (100 / progressMax) * progressAmt;
    $(".status__progress-bar").css("width", progressPercent + "%");
  };

  function setConnectedPort(port) {
    if (!port) port="";
    var idx = port.lastIndexOf("/");
    if (idx>=0 && idx<port.length-1)
      port = port.substr(idx+1);
    $(".status__port").html(port);
  };

  function showStatusWindow(title, message) {
    if (statusWindow) statusWindow.close();
    statusWindow = Espruino.Core.App.openPopup({
      title: title,
      padding: true,
      contents: '<div class="status__progress" style="width:100%;margin-top:10px;"><div class="status__progress-bar"></div></div>'+
                '<p><b>'+message+'</b>... <span class="status__message"></span></p>',
      position: "center",
    });
  }
  function hideStatusWindow() {
    if (statusWindow) {
      statusWindow.close();
      statusWindow = undefined;
    }
  }

  Espruino.Core.Status = {
      init : init,
      setStatus : setStatus,
      hasProgress : hasProgress,
      incrementProgress : incrementProgress, // an amount based on setStatus(.., progressMax)
      showStatusWindow : showStatusWindow,
      hideStatusWindow : hideStatusWindow
  };
}());
/* --------------------------------------------------------------
         js/core/app.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Main App Container
 ------------------------------------------------------------------
**/
"use strict";

(function() {

  var nwwindow = undefined;
  var nwmaximised = false;
  if ("undefined" != typeof require) {
    if (process.versions.electron) {
      // Thanks electon :(
      if (require('electron').remote)
        nwwindow = require('electron').remote.getCurrentWindow(); // new
      else
        nwwindow = require('remote').getCurrentWindow(); // old
    } else {
      nwwindow = require('nw.gui').Window.get();
      /* When new windows are loaded in nw.js they're loaded like the current
      frame - with no navigation or title bar. Stop this behaviour and load
      the system web browser instead (fix #187) */
      nwwindow.on('new-win-policy', function (frame, url, policy) {
        //policy.setNewWindowManifest({toolbar:true,frame:true}); // looks grim
        policy.ignore();
        require('nw.gui').Shell.openExternal( url );
      });
    }
  }

  var defaultIcon = {
    area: {
      name: "toolbar",
      position: "right"
    },
    menu: []
  };
  var initialised = false;
  var _idcounter = 1;

  /**
   * Initialize the window
   */
  function init() {
    // If we have no native title bar, make sure we remove it from the app
    if (Espruino.Core.Utils.hasNativeTitleBar()) {
      document.getElementsByClassName("title-bar")[0].remove();
      document.getElementsByClassName("window")[0].classList.remove("window--app");
    }
    // check again, just in case it's removed from the HTML
    if (document.getElementsByClassName("title-bar").length) {
      Espruino.Core.App.addIcon({
        id:'minimize',
        icon: 'minus',
        title: 'Minimize Window',
        order: 1000,
        cssClass: 'title-bar__button--minimize',
        area: {
          name: "titlebar",
          position: "right"
        },
        click: function(){
          if (nwwindow) {
            nwwindow.minimize();
          } else {
            chrome.app.window.current().minimize();
          }
        }
      });

      Espruino.Core.App.addIcon({
        id:'maximize',
        icon: 'window',
        title: 'Maximize / Restore Window',
        order: 1001,
        cssClass: 'title-bar__button--maximize',
        area: {
          name: "titlebar",
          position: "right"
        },
        click: function(){
          if (nwwindow) {
            if (nwmaximised) {
              nwmaximised = false;
              nwwindow.unmaximize();
            } else {
              nwmaximised = true;
              nwwindow.maximize();
            }
          } else {
            if(chrome.app.window.current().isMaximized()) {
              chrome.app.window.current().restore();
            } else {
              chrome.app.window.current().maximize();
            }
          }
        }
      });

      Espruino.Core.App.addIcon({
        id:'close',
        icon: 'cross',
        title: 'Close Window',
        order: 1002,
        cssClass: 'title-bar__button--close',
        area: {
          name: "titlebar",
          position: "right"
        },
        click: function(){
          if (nwwindow) {
            nwwindow.close();
          } else {
            chrome.app.window.current().close();
          }
        }
      });
    }

    // Setup splitter
    if (document.getElementsByClassName("split-pane").length) {
       var orientation = Espruino.Config.UI_VERTICAL ? "horizontal" : "vertical";

      $(".split-pane").splitster({
        orientation: orientation,
        barWidth: 0, // Don't show the bar when vertical,
        draggable: ".editor--code > .sidebar"
      });
      function updateSplitter() {
        $(".split-pane").splitster("orientation", orientation);
        $(".split-pane").splitster("barWidth", orientation == "vertical" ? 0 : 10);
        $(".split-pane").splitster("draggable", orientation == "vertical" ? ".editor--code > .sidebar" : false);
      }
      updateSplitter();
      // Setup orientation button
      var orientationBtn = Espruino.Core.App.addIcon({
        id: "orientation",
        icon: "split-" + orientation,
        title : "Toggle Orientation",
        order: -80,
        divider: "right",
        area: {
          name: "toolbar",
          position: "right"
        },
        click: function() {
          orientation = orientation == "vertical" ? "horizontal" : "vertical";
          Espruino.Config.set("UI_VERTICAL", orientation == "horizontal"); // splitter=horiz means vertical layout
          updateSplitter();
          orientationBtn.setIcon("split-" + orientation);
        }
      });
    }

    // layout after everything else has been added
    Espruino.addProcessor("initialised", function(data,callback) {
      sortIcons();
      callback(data);
      initialised = true;
    });
  }

  // sort all icons in a container according to their icon-order field (see addIcon)
  function sortIcons(container)
  {
    if (container === undefined) {
      sortIcons(".title-bar__buttons");
      sortIcons(".toolbar__buttons--left");
      sortIcons(".toolbar__buttons--right");
      sortIcons(".editor--terminal .sidebar__buttons--top");
      sortIcons(".editor--terminal .sidebar__buttons--bottom");
      sortIcons(".editor--code .sidebar__buttons--top");
      sortIcons(".editor--code .sidebar__buttons--bottom");
      return;
    }

    var mylist = typeof container === "string" ? document.querySelector(container) : container;
    if (!mylist) return;
    var listitems = Espruino.Core.HTML.domToArray(mylist.children);
    listitems.sort(function(a, b) {
       return parseFloat(a.getAttribute("data-icon-order")) - parseFloat(b.getAttribute("data-icon-order"));
    });
    listitems.forEach(function(itm) { mylist.append(itm); });
  }

  /**
   * Close a popup window if one was shown
   */
  function closePopup()
  {
    var win = document.querySelector(".window--modal");
    if (win) {
      var api = win.data_api;
      if(api) api.close();
    }
  }

/**
  * Open a popup window
  *
  * options = {
  *   id    : a unique ID for this window
  *   position  : "center" // middle of screen, small
                  "stretch" // across the screen
                  "auto"    // auto width, enough height to show all contents
  *   padding  : bool - add padding or not?
  *   width / height : set size in pixels
  *   title : title text
  *   contents : html contents
  *   buttons : [ {name, callback}, ... ] - add  button and call callback when clicked
  *   onClose : function - called when the window is closed
  *
  * returns : {
  *  setContents, // set window contents
  *  close, // close this window
  *  window  // the window's dom element
  * }
  */
  function openPopup(options)
  {
    if (!options.id) options.id = "_popup"+_idcounter++;
    // Declare API first, as we need to make sure the close button / overlay click
    // call the methods on the API object, rathert than a copy of the close method
    // so that the close method can be overridden with extra logic if needed.
    var api = {
      setContents : function(contents) {
        var viewport = winModal.querySelector(".window__viewport");
        if ("string" == typeof contents)
          viewport.innerHTML = contents;
        else {
          while (viewport.lastElementChild!==null)
            viewport.lastElementChild.remove();
          viewport.append(contents);
        }
      },
      close : function() {
        winOverlay.remove();
        if (options.onClose) options.onClose();
      }
    }


    // Append the modal overlay
    var winOverlay = Espruino.Core.HTML.domElement('<div class="window__overlay"><div class="window__overlay-inner"></div></div>');
    document.querySelector(".window > .window__viewport").append(winOverlay);
    winOverlay.addEventListener("mousedown", function(e) {
      e.stopPropagation();
      api.close()
    });

    // Append the popup window
    var domContents = typeof options.contents != "string";
    var winModal = Espruino.Core.HTML.domElement('<div class="window window--modal window--'+ options.position +'" id="' + options.id + '">'+
          '<div class="window__title-bar title-bar">'+
            '<h5 class="title-bar__title">'+ options.title +'</h5>'+
            '<div class="title-bar__buttons"></div>'+
          '</div>'+
          '<div class="window__viewport">'+ (domContents ? "" : (
            (options.padding ? '<div style="padding: 0px 10px 0px 10px;">':'')+
            options.contents +
            (options.padding ? '</div>':''))) +
          '</div>'+
        '</div>');
    if (domContents)
      winModal.querySelector(".window__viewport").append(options.contents);
    winModal.addEventListener("mousedown", function(e) {
      e.stopPropagation();
    });
    winOverlay.querySelector(".window__overlay-inner").append(winModal);

    // Append close button
    var winClose = Espruino.Core.HTML.domElement('<a class="icon-cross sml title-bar__button title-bar__button--close" title="Close"></a>');
    winClose.addEventListener("click", function(e) {
      api.close();
    });
    winModal.querySelector(".title-bar__buttons").append(winClose);

    // Append 'next'/'ok' button if we registered a callback

    var buttoncontainer;
    if (options.buttons) {
      var buttoncontainer = Espruino.Core.HTML.domElement(
        '<div class="guiders_buttons_container" style="padding: 10px 10px 10px 10px;bottom:10px;">');
      winModal.querySelector(".window__viewport").append(buttoncontainer);

      options.buttons.forEach(function(btn) {
        var domBtn = Espruino.Core.HTML.domElement('<a class="guiders_button" href="#">'+btn.name+'</a>');
        domBtn.addEventListener("click", btn.callback);
        buttoncontainer.prepend(domBtn);
      });
    }

    // Apply dimensions
    if(options.width)
      winModal.width(options.width);

    if(options.height)
      winModal.height(options.height);

    winModal.data_api = api;
    api.window = winModal;

    return api;
  }

  /**
   * Add an icon to the window in the specified area
   *
   * options = {
   *   id    : a unique ID for this icon
   *   icon  : the icon type to use (corresponds to icons.css)
   *   area  : {
   *             name : titlebar | toolbar | terminal | code,
   *             position : left | middle | right | top | bottom
   *           }
   *   title : nice title for tooltips
   *   order : integer specifying the order. After icons have been added they'll be sorted so this is ascending
   *   click : callback when icon clicked
   *   more  : add down-arrow in bottom right of icon and callback when clicked
   *   info  : info text at bottom of the button
   *
   * returns:
   *
   * {
   *   setIcon     // update the icon
   *   setInfo     // update the info text
   *   remove
   *   addMenuItem
   * }
   */
  function addIcon(options)
  {
    options = $.extend({}, defaultIcon, options);

    var selector = "";
    var iconSize = 'lrg';
    var additionalClasses = '';
    switch(options.area.name){
      case "titlebar":
        selector = ".window--app > .title-bar > .title-bar__buttons";
        iconSize = 'sml';
        additionalClasses = 'title-bar__button';
        break;
      case "toolbar":
        selector = ".toolbar__buttons--" + options.area.position
        break;
      case "terminal":
        selector = ".editor--terminal .sidebar__buttons--" + options.area.position
        break;
      case "code":
        selector = ".editor--code .sidebar__buttons--" + options.area.position
        break;
    }

    if(options.cssClass)
      additionalClasses += ' '+ options.cssClass;

    var container = document.querySelector(selector);
    if (!container) {
      console.warn("App.addIcon unknown area: "+ selector);
      return;
    }

    var order = 0;
    if (options.order !== undefined)
      order = options.order;

    var elementClass = 'icon-'+ options.icon;

    // remove old icon if there was one
    var c = container.querySelectorAll("."+elementClass);
    for (var i=0;i<c.length;i++) c[i].remove();

    if (options.info)
      additionalClasses += " icon--hasinfo";

    // add the element
    var element = Espruino.Core.HTML.domElement('<a id="icon-'+ options.id +'" class="icon '+ elementClass +' '+ iconSize +' '+ additionalClasses +'" title="'+ options.title +'" data-icon-order="'+ order +'"></a>');
    container.append(element);

    var info;
    if (options.info) {
      info = Espruino.Core.HTML.domElement('<span class="icon__info">'+options.info+'</span>');
      element.append(info);
    }

    if (options.more) {
      var more = Espruino.Core.HTML.domElement('<span class="icon__more">&#9660</span>');
      element.append(more);
      more.addEventListener("click", function(e) {
        e.stopPropagation();
        options.more(e)
      });
    }

    if(options.divider)
      element.classList.add("icon--divide-"+ options.divider);

    if(options.click)
      element.addEventListener("click", options.click);

    if (initialised)
      sortIcons(selector);

    var api = {
      setIcon : function(icon) {
        element.classList.remove(elementClass);
        elementClass = 'icon-'+ icon;
        element.classList.add(elementClass);
      },
      setInfo : function(text) {
        options.info = text;
        if (info) info.innerHTML = text;
      },
      remove : function() {
        // Is there a leak if we don't remove event handlers?
        element.remove();
      },
      addMenuItem: function(options) {
        var menuEl = element.querySelector(".menu");
        if(!menuEl) {
          menuEl = Espruino.Core.HTML.domElement('<div class="menu"></div>');
          element.append(menuEl);
        }

        var order = 0;
        if (options.order !== undefined)
          order = options.order;

        var menuItemHTML =
          `<a id="menu-${options.id}" title="${options.title}" data-icon-order="${order}">`;
        if (options.icon) menuItemHTML += `<i class="icon-${options.icon} sml"></i>`;
        menuItemHTML += `${options.title}</a>`;
        var menuItemEl = Espruino.Core.HTML.domElement(menuItemHTML);
        menuEl.append(menuItemEl);
        if(options.click)
          menuItemEl.addEventListener("click", function(e){
            e.stopPropagation();
            options.click(e);
          });

        sortIcons(menuEl);
      },
      removeMenuItem: function(id) {
        var menuItemEl = element.querySelector("#menu-"+id);
        if (menuItemEl) menuItemEl.remove();
      }
    };

    if(options.menu && options.menu.length > 0)
    {
      $.each(options.menu, function(idx, itm){
        api.addMenuItem(itm);
      });
    }

    element.data_api = api;

    return api;
  }

  /**
   * Add an icon to the window somewhere that'll alert the user
   *
   * options = {
   *   id    : a unique ID for this icon
   *   icon  : the icon type to use
   *   area  : { name : titlebar | toolbar | terminal | code,  position : left | middle | right | top | bottom }
   *   name  : icon name - corresponds to icons.css
   *   title : nice title for tooltips
   */
  function addAlertIcon(options)
  {
    options.icon = 'alert';
    options.order = 999;
    options.cssClass = 'icon-alert';
    if (Espruino.Core.Utils.hasNativeTitleBar()) {
      // Then we don't have a toolbar :(
      options.area = {
        name: "toolbar",
        position: "right"
      };
    } else {
      options.area = {
        name: "titlebar",
        position: "right"
      };
    }
    return addIcon(options);
  }

  function findIcon(id)
  {
    var icon = document.querySelector("#icon-"+ id);
    return icon ? icon.data_api : undefined;
  }

  Espruino.Core.App = {
      init : init,
      openPopup: openPopup,
      closePopup: closePopup,
      addIcon: addIcon,
      addAlertIcon : addAlertIcon,
      findIcon: findIcon
  };

})();
/* --------------------------------------------------------------
         js/core/file.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  File Load/Save
 ------------------------------------------------------------------

 FIXME:

  * setOpenFileMode should be per file?
  * Seatch for Espruino.Core.EditorJavaScript.get/set* and remove/change what we can get away with

 **/
"use strict";
(function(){

  // how many millisecs between checking a file for modification?
  const WATCH_INTERVAL = 1000;
  // types of file we accept
  const FILETYPES = {
    all : { // used when opening a file dialog
      name:"code.js",
      description:"All supported files",
      mimeTypes : {"application/javascript": [".js", ".js"], "text/plain": [".txt"],"text/xml": [".xml"]},
    },
    js : {
      name:"code.js",
      icon:"📄",
      description:"JavaScript files",
      mimeTypes : {"application/javascript": [".js", ".js"], "text/plain": [".txt"]},
    },
    xml : {
      name:"code_blocks.xml",
      icon:"🧩",
      description:"Blockly XML files",
      mimeTypes : {"text/xml": [".xml"]},
    }
  };


  var iconOpenFile;
  var iconSaveFile;
  var iconViewMode;
  // interval used when checking files for modification
  var watchInterval;
  // What we should do when clicking the 'openFile' button
  var openFileMode = "open"; // open, reload, watch, upload

  /* Files contains objects of this type:
      type :"js"/"xml"
      fileName : "Untitled.js"
      storageName : "", // file on Espruino device (Espruino.Config.SAVE_STORAGE_FILE)
      sendMode : 0,    // file on Espruino device (Espruino.Config.SAVE_ON_SEND)
      contents : "",   // the actual file contents
      handle           // file handle if loaded using file API
      editor           // if JS, this is from Espruino.Core.EditorJavaScript.createNewEditor
  */

  // List of currently open file tabs
  var files = [ ];
  var activeFile = 0; // index of active file in `files`

  /* options = {
    type : "js"/"xml"
    fileName : string
    isEmpty : bool
    contents : string
  }
  */
  function getDefaultFile(options) {
    options = options||{};
    if (!options.type) { // guess file type if not provided
      options.type="js";
      if (options.fileName && options.fileName.toLowerCase().endsWith(".xml"))
        options.type = "xml";
    }
    var file = {
      type : options.type, // "js"/"xml"
      fileName : "Untitled."+options.type, // file path in filesystem
      storageName : "", // file on Espruino device (Espruino.Config.SAVE_STORAGE_FILE)
      sendMode : Espruino.Core.Send.SEND_MODE_RAM,    // file on Espruino device (Espruino.Config.SAVE_ON_SEND)
      contents : "",    // the actual file contents
    };
    if (options.fileName) file.fileName = options.fileName;
    if (options.storageName) {
      file.storageName = options.storageName;
      file.sendMode = Espruino.Core.Send.SEND_MODE_STORAGE;
    }
    if (options.contents)
      file.contents = options.contents;
    else if (!options.isEmpty) {
      if (options.type=="js")
        file.contents = Espruino.Core.EditorJavaScript.DEFAULT_CODE;
      else if (options.type=="xml")
        file.contents = Espruino.Core.EditorBlockly.DEFAULT_CODE;
      else
        console.log("Espruino.Core.File unknown file type!");
    }

    return file;
  }

  // Sets the file and the editor up with the file's contents
  function setFileEditorContents(file, value, options) {
    options = options||{};
    file.contents = value;
    if (file.editor) {
      file.editor.setCode(value);

      // If `options.clearHistory`, then mark editor as clean with no
      // existing undo history. Using this for newly-created editors
      // will ensure that the first entry in the Undo history sets the
      // contents to `value` and not empty.
      if (options.clearHistory) file.editor.codeMirror.clearHistory();

    } else if (file.type=="xml") {
      Espruino.Core.EditorBlockly.setXML(value);
    }
  }

  function setActiveFile(idx) {
    if (idx<0 || idx>=files.length) throw new Error("File index out of range");
    // Old state should all be saved automatically...

    // Apply new state
    activeFile = -1; // so we don't try and update this file when things change
    if(typeof window !== 'undefined' && window.localStorage)
      window.localStorage.setItem(`FILE_ACTIVE`, idx);
    Espruino.Config.set("SAVE_ON_SEND", 0|files[idx].sendMode);
    Espruino.Config.set("SAVE_STORAGE_FILE", files[idx].storageName||"");
    setCurrentFileName(files[idx].fileName);
    Espruino.Core.EditorJavaScript.hideAll();
    if (files[idx].type == "js") {
      Espruino.Core.EditorBlockly.setVisible(false);
      if (files[idx].editor==undefined) {
        // if we didn't have an editor, make one
        files[idx].editor = Espruino.Core.EditorJavaScript.createNewEditor();
        setFileEditorContents(files[idx], files[idx].contents, {clearHistory: true});
      } else {
        files[idx].editor.setVisible(true);
      }
      iconViewMode.setIcon("code");
      files[idx].editor.codeMirror.focus();
    } else { // xml
      Espruino.Core.EditorBlockly.setVisible(true);
      Espruino.Core.EditorBlockly.setXML(files[idx].contents);
      iconViewMode.setIcon("block");
    }

    activeFile = idx; // now we're ok to set the active file
    saveFileConfig();
    // we need to change which tab is active
    updateFileTabs();
    // Change the state of the send icon
    Espruino.Core.Send.updateIconInfo();
  }

  function loadFileConfig() {
    if (typeof window == 'undefined' || !window.localStorage) return;
    var fileCount = 0|window.localStorage.getItem(`FILES`);
    files = [];
    for (var idx=0;idx<fileCount;idx++) {
      var file = {};
      file.contents = window.localStorage.getItem(`FILE${idx}_CODE`);
      try {
        var info = JSON.parse(window.localStorage.getItem(`FILE${idx}_INFO`));
        file.type = info.type;
        if (!file.type) file.type="js";
        file.fileName = info.fileName;
        file.storageName = info.storageName;
        file.sendMode = info.sendMode;
        files.push(file);
      } catch(e) {
      }
    }
    var newActiveFile = 0|window.localStorage.getItem(`FILE_ACTIVE`);
    if (files.length==0)
      files.push(getDefaultFile()); // add defualt file if no files
    if (newActiveFile<0 || newActiveFile>=files.length)
      newActiveFile = 0; // reset active file
    setActiveFile(newActiveFile)
  }

  function saveFileConfig() {
    if (typeof window == 'undefined' || !window.localStorage) return;
    window.localStorage.setItem(`FILES`, files.length);
    window.localStorage.setItem(`FILE_ACTIVE`, activeFile);
    files.forEach((file,idx) => {
      window.localStorage.setItem(`FILE${idx}_CODE`, file.contents);
      window.localStorage.setItem(`FILE${idx}_INFO`, JSON.stringify({
        type : file.type,
        fileName : file.fileName,
        storageName : file.storageName,
        sendMode : file.sendMode
      }));
    });
  }

  function createFileTabs() {
    var element = Espruino.Core.HTML.domElement('<div id="file_list"></div>');
    // add file tabs after left icons (so in the middle, before --right)
    document.querySelector(".toolbar__buttons--left").after(element);
  }

  function closeFileTab(idx) {
    // TODO: Check whether it needs saving?
    console.log(`File> Closing tab ${idx}: ${files[idx].fileName}`);
    if (activeFile==idx) {
      // Change to a new file
      if (activeFile>0) setActiveFile(activeFile-1);
      else {
        if (files.length<2) { // if not enough files, add a new file
          files.push(getDefaultFile());
        }
        setActiveFile(activeFile+1);
      }
    }
    // if we had an editor, remove the editor
    var file = files[idx];
    if (file.editor) {
      file.editor.remove();
      file.editor = undefined;
    }
    // remove the old one from the list
    files.splice(idx,1);
    if (activeFile>idx) activeFile--;
    // update the file list
    saveFileConfig();
    updateFileTabs();
  }

  // Create a new tab, see getDefaultFile for options
  function createNewTab(options) {
    options = options||{};
    var file = getDefaultFile(options);

    files.push(file);
    // Set active tab - this saves and updates the file tab list
    setActiveFile(files.length-1);
    return file;
  }

  function showNewFileDialog() {
    var popup = Espruino.Core.App.openPopup({
      title: "New file...",
      contents: Espruino.Core.HTML.domList([
        {
          icon : "icon-code",
          title : "JavaScript",
          callback : function() {
            popup.close();
            createNewTab({type:"js"});
          }
        },
        {
          icon : "icon-block",
          title : "Blockly",
          callback : function() {
            popup.close();
            createNewTab({type:"xml"});
          }
        }
      ]),
      position: "center",
    });
  }

  function updateFileTabs() {
    var fileList = document.querySelector("#file_list");
    fileList.innerHTML = files.map( (f,idx) => {
      let active = activeFile==idx;
      return `<span class="file_list-tab ${active?'active':'inactive'}" fileIndex="${idx}">${FILETYPES[f.type].icon} ${f.fileName||"Untitled"}${active?'&nbsp;<span class="close">&#10005;</span>':""}</span>`
    }).join("") + `<span class="file_list-new">+</span>`;
    var node = fileList.firstChild;
    while (node) {
      node.addEventListener("click", function(e) {
        e.preventDefault();
        if (e.target.classList.contains("close")) {
          closeFileTab(activeFile);
        } else if (e.target.classList.contains("file_list-new")) {
          showNewFileDialog();
        } else if (e.target.classList.contains("file_list-tab")) {
          setActiveFile(parseInt(e.target.getAttribute("fileIndex")));
        } else
          console.log("Unexpected element clicked", e.target);
      });
      node = node.nextSibling;
    }
  }


  function init() {
    // Open file icon
    var icon = {
      id: "openFile",
      icon: "folder-open",
      title : "Open File",
      order: 100,
      area: {
        name: "code",
        position: "top"
      },
      click: function() {
        loadFile([FILETYPES.all,FILETYPES.js,FILETYPES.xml]);
      }
    };
    // Only add extra options if showOpenFilePicker is available
    if ((typeof window.showOpenFilePicker === 'function') && !Espruino.Core.Utils.isCrossOriginSubframe()) {
      icon.more = function() {
        var popup = Espruino.Core.App.openPopup({
          id: "fileopenmodeselector",
          title: "Open File should...",
          contents: Espruino.Core.HTML.domList([{
              icon : "icon-folder-open", title : "Open File",
              description : "Load file from disk", callback : function() { setOpenFileMode("open");popup.close(); }
            },{
              icon : "icon-folder-open", title : "Reload File",
              description : "Reload the current file", callback : function() { setOpenFileMode("reload");popup.close(); }
            },{
              icon : "icon-refresh", title : "Watch File",
              description : "Watch for changes", callback : function() { setOpenFileMode("watch");popup.close(); }
            },{
              icon : "icon-refresh", title : "Watch and Upload",
              description : "Watch for changes and upload", callback : function() { setOpenFileMode("upload");popup.close(); }
            }
          ]),
          position: "center",
        });
      };
      icon.info = "open";
    }
    iconOpenFile = Espruino.Core.App.addIcon(icon);
    // Save file icon
    iconSaveFile = Espruino.Core.App.addIcon({
      id: "saveFile",
      icon: "save",
      title : "Save File",
      order: 200,
      area: {
        name: "code",
        position: "top"
      },
      click: function() {
        saveFile(files[activeFile]);
      }
    });
    // Setup code mode (js/blockly) button
    iconViewMode = Espruino.Core.App.addIcon({
      id: "code",
      icon: "code",
      title : "Switch between Code and Graphical Designer",
      order: 0,
      area: {
        name: "code",
        position: "bottom"
      },
      click: function() {
        var switchToType = (files[activeFile].type == "xml") ? "js" : "xml";
        var idx = files.findIndex(f => f.type==switchToType);
        if (idx>=0) {
          // we found one! switch
          setActiveFile(idx);
        } else {
          // else we didn't find one - make a new tab
          createNewTab({type:switchToType});
        }
      }
    });
    // Create the tabs showing what files we have
    createFileTabs();
    // Handle file send mode or JS changed
    Espruino.addProcessor("sendModeChanged", function(_, callback) {
      if (activeFile>=0 && activeFile<files.length) {
        var f = files[activeFile];
        f.storageName = Espruino.Config.SAVE_STORAGE_FILE;
        f.sendMode = Espruino.Config.SAVE_ON_SEND;
        if (f.storageName!="" && f.type=="js" && f.fileName=="Untitled.js") {
          f.fileName = f.storageName;
          if (!f.fileName.endsWith(".js"))
            f.fileName += ".js";
          updateFileTabs();
        }
        saveFileConfig();
      }
      callback(_);
    });
    Espruino.addProcessor("jsCodeChanged", function(data, callback) {
      var file = files.find(f=>f.editor == data.editor);
      if (file) {
        file.contents = data.code;
        if(typeof window !== 'undefined' && window.localStorage)
          window.localStorage.setItem(`FILE${activeFile}_CODE`, data.code);
      } else
        console.warn("Got jsCodeChanged but can't match it to an editor");
      callback(data);
    });
    Espruino.addProcessor("xmlCodeChanged", function(data, callback) {
      if (files[activeFile] && files[activeFile].type=="xml") {
        files[activeFile].contents = data.code;
        if(typeof window !== 'undefined' && window.localStorage)
          window.localStorage.setItem(`FILE${activeFile}_CODE`, data.code);
      }
      callback(data);
    });
    // get code from our config area at bootup
    Espruino.addProcessor("initialised", function(data,callback) {
      loadFileConfig();
      updateFileTabs();

      callback(data);
    });
  }

  function setOpenFileMode(mode) {
    iconOpenFile.setInfo(mode);
    openFileMode = mode;
    if (watchInterval) clearInterval(watchInterval);
    watchInterval = undefined;
    // if we're in
    if (openFileMode == "watch" || openFileMode == "upload") {
      watchInterval = setInterval(function() {
        files.forEach((file) => {readFileContents(file)});
      }, WATCH_INTERVAL);
    }
  }

  function setCurrentFileName(filename) {
    // we need to update the file list
    if (activeFile>=0 && activeFile<files.length) {
      files[activeFile].fileName = filename;
      updateFileTabs();
      saveFileConfig();
    }
  }

  /**  Handle newline conversions - Windows expects newlines as /r/n when we're saving/loading files */
  function convertFromOS(chars) {
   if (!Espruino.Core.Utils.isWindows()) return chars;
   return chars.replace(/\r\n/g,"\n");
  };

  /**  Handle newline conversions - Windows expects newlines as /r/n when we're saving/loading files */
  function convertToOS(chars) {
   if (!Espruino.Core.Utils.isWindows()) return chars;
   return chars.replace(/\r\n/g,"\n").replace(/\n/g,"\r\n");
  };

  function getFilePickerTypes(fileTypes) {
    return fileTypes.map(fileType => ({description:fileType.description, accept: fileType.mimeTypes}));
  }

  function loadFile(fileTypes) {
    /* if clicking the button should just reload the existing file, do that */
    if (openFileMode == "reload" && files[activeFile].handle) {
      readFileContents(files[activeFile]);
      return;
    }
    // Otherwise load a new file
    if ((typeof window.showOpenFilePicker === 'function')  && !Espruino.Core.Utils.isCrossOriginSubframe()) {
      window.showOpenFilePicker({types: getFilePickerTypes(fileTypes)}).
      then(function(fileHandles) {
        fileHandles.forEach(fileHandle => {
          if (!fileHandle.name) return;
          var file = createNewTab({fileName:fileHandle.name, isEmpty:true});
          file.handle = fileHandle;
          readFileContents(file, {clearHistory: true});
        });
      });
    } else if (("undefined"!=typeof chrome) && chrome.fileSystem) {
      // Chrome Web App / NW.js
      chrome.fileSystem.chooseEntry({type: 'openFile'}, function(fileEntry) {
        if (!fileEntry) return;
        fileEntry.file(function(file) {
          var reader = new FileReader();
          reader.onload = function(e) {
            var file = createNewTab({fileName:fileEntry.name, isEmpty:true});
            setFileEditorContents(file, convertFromOS(e.target.result), {clearHistory: true});
          };
          reader.onerror = function() {
            Espruino.Core.Notifications.error("Error Loading", true);
          };
          reader.readAsText(file);
        });
      });
    } else {
      var mimeTypes = { };
      fileTypes.forEach( fileType => {
        mimeTypes = Object.assign(mimeTypes, fileType.mimeTypes);
      });
      var mimeTypeList = Object.values(mimeTypes) + "," + Object.keys(mimeTypes);
      Espruino.Core.Utils.fileOpenDialog({id:"code",type:"text",mimeType:mimeTypeList}, function(data, mimeType, fileName) {
        var file = createNewTab({fileName:fileName, isEmpty:true});
        setFileEditorContents(file, convertFromOS(data), {clearHistory: true});
      });
    }
  }


  // read a file from window.showOpenFilePicker
  function readFileContents(fileToLoad, options) {
    options = options||{};
    if (options.clearHistory === undefined) options.clearHistory = false;

    if (!fileToLoad.handle) {
      return;
    }

    var file;
    fileToLoad.handle.getFile().then(function(f) {
      file = f;
      // if file is newer, proceed to load it
      if (!fileToLoad.lastModified ||
          file.lastModified > fileToLoad.lastModified)
        return file.text();
      else
        return undefined;
    }).then(function(contents) {
      if (!contents) return;
      // if loaded, update editor
      fileToLoad.lastModified = file.lastModified;
      setFileEditorContents(fileToLoad, convertFromOS(contents), {clearHistory: options.clearHistory});
      if (openFileMode == "upload") {
        Espruino.Core.Notifications.info(new Date().toLocaleTimeString() + ": " + fileToLoad.name+" changed, uploading...");
        Espruino.Plugins.KeyShortcuts.action("icon-deploy");
      }
    });
  }

  function saveFile(fileToSave) {
    /* TODO: if fileToSave.handle, we could write direct to this
    file without the dialog. But then what do we do for 'save as'? The down-arrow
    next to the icon? */
    if (window.showSaveFilePicker && !Espruino.Core.Utils.isCrossOriginSubframe()) {
      var writable, handle;
       window.showSaveFilePicker({
          suggestedName:fileToSave.fileName,
          types: getFilePickerTypes([FILETYPES[fileToSave.type||"js"]])
        }).
         then(h =>  {
          handle = h;
          return handle.createWritable()
         }).
         then(w => {
          writable = w;
          var fileBlob = new Blob([fileToSave.contents], {type: "text/plain"});
          return writable.write(fileBlob);
         }).
         then(() => writable.close()).
         then(() => {
           if (files[activeFile])
             files[activeFile].handle = handle;
           if (handle.name) setCurrentFileName(handle.name);
         });
       return
    }

    Espruino.Core.Utils.fileSaveDialog(convertToOS(fileToSave.contents), fileToSave.fileName, function(name) {
      setCurrentFileName(name);
    });
  }

  // Set the editor's JS code (and if it doesn't exist, make a new tab)
  function setJSCode(code, options) {
    options = options||{};
    if (!options.fileName)
      options.fileName = "code.js";
    var file = files.find(file => file.fileName==options.fileName);
    let newEditorOpened = false;
    if (!file) {
      file = createNewTab({
        type:"js",
        fileName:options.fileName,
        storageName:options.isStorageFile ? options.fileName : undefined,
        isEmpty:true,
        contents:code});
      newEditorOpened = true;
    } else {
      if (files[activeFile] != file)
        setActiveFile(files.indexOf(file));
      setFileEditorContents(file, code, {clearHistory: newEditorOpened});
    }
  }

  function getCurrentCode() {
    var file = files[activeFile];
    if (!file) return;
    if (file.type=="xml") // blockly code needs to be translated to JS first!
      return Espruino.Core.EditorBlockly.getCode();
    return file.contents;
  }

  function getEspruinoCode(callback) {
    Espruino.callProcessor("transformForEspruino", getCurrentCode(), callback);
  }

  function isInBlockly() {
    return files[activeFile] && files[activeFile].type=="xml";
  }

  function focus() {
    var file = files[activeFile];
    if (!file) return;
    if (file.type=="xml")
      document.querySelector("#divblockly").focus();
    else if (file.editor)
      file.editor.codeMirror.focus();
  }

  function switchTo(fileType) {
    var file = files.find(file => file.type==fileType);
    if (!file)
      file = createNewTab({type:fileType});
    if (files[activeFile] != file)
      setActiveFile(files.indexOf(file));
  }

  Espruino.Core.File = {
    init : init,
    getActiveFile : () => files[activeFile], // Get the object representing the currently active file
    showFile : file=> setActiveFile(files.indexOf(file)), // Given a file object (from getActiveFile), make sure it's showing
    getCurrentCode : getCurrentCode, // Get the code for the currently active tab
    getEspruinoCode : getEspruinoCode, // Get the current code in a form that is ready to send to Espruino
    setJSCode : setJSCode, // (code, {fileName...,}}) called when the contents of the code window is to be set (eg from a URL)
    isInBlockly : isInBlockly, // are we currently showing a Blockly window
    focus : focus, // give focus to the current editor
    switchToCode: () => switchTo("js"), // switch to show JS code - if it doesn't exist, make a tab
    switchToBlockly: () => switchTo("xml") // switch to show XML code - if it doesn't exist, make a tab
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/core/serial.js
   -------------------------------------------------------------- */
/*
Gordon Williams (gw@pur3.co.uk)

Common entrypoint for all communications from the IDE. This handles
all serial_*.js connection types and passes calls to the correct one.

To add a new serial device, you must add an object to
  Espruino.Core.Serial.devices:

  Espruino.Core.Serial.devices.push({
    "name" : "Test",               // Name, when initialising
    "init" : function()            // Gets called at startup
    "getStatus" : function(ignoreSettings)   // Optional - returns:
      // true - all ok
      // {error: error_string}
      // {warning: warning_string}
    "getPorts": function(callback) // calls 'callback' with an array of ports:
        callback([{path:"TEST",          // path passed to 'open' (and displayed to user)
                   description:"test",   // description displayed to user
                   type:"test",           // bluetooth|usb|socket - used to show icon in UI
                   // autoconnect : true  // automatically conect to this (without the connect menu)
                   // promptsUser : true  // this is set if we expect the Web Browser to prompt the user for this item
                 }], true); // instantPorts - will getPorts return all the ports on the first call, or does it need multiple calls (eg. Bluetooth)
    "open": function(path, openCallback, receiveCallback, disconnectCallback),
    "write": function(dataAsString, callbackWhenWritten)
    "close": function(),
    "maxWriteLength": 20, // optional - the maximum amount of characters that should be given to 'write' at a time
  });

*/
(function() {
  // List of ports and the devices they map to
  var portToDevice = undefined;
  // The current connected device (from Espruino.Core.Serial.devices)
  var currentDevice = undefined;
  // called when data received
  var readListener = undefined;
  // are we sending binary data? If so, don't automatically insert breaks for stuff like Ctrl-C
  var sendingBinary = false;
  // For throttled write
  var slowWrite = true;

  // filler to allow us to use EspruinoWebTools' Connection class
  var uart = {
    showProgress : false,
    writeProgress : function(chars, charsMax) {
    if (chars===undefined) {
      this.lastProgress = 0;
    } else {
      var diff = chars-this.lastProgress;
      if (chars==0) diff=0;
      this.lastProgress = chars;
      if (this.showProgress)
        Espruino.Core.Status.incrementProgress(diff);
    }
  } };

  // ---------------
  var logLevel = 2;
  function log(level, str) { if (level<=logLevel) console.log("serial:", str); }
  function ab2str(buf) { return String.fromCharCode.apply(null, new Uint8Array(buf)); }
  var parseRJSON = data => Espruino.Core.Utils.parseRJSON(data);
  // ---------------

  /// Base connection class - BLE/Serial add writeLowLevel/closeLowLevel/etc on top of this
  class Connection {
    endpoint = undefined; // Set to the endpoint used for this connection - eg maybe endpoint.name=="Web Bluetooth"
    // on/emit work for close/data/open/error/ack/nak/packet events
    on(evt,cb) { let e = "on"+evt; if (!this[e]) this[e]=[]; this[e].push(cb); } // on only works with a single handler
    emit(evt,data1,data2) { let e = "on"+evt;  if (this[e]) this[e].forEach(fn=>fn(data1,data2)); }
    removeListener(evt,callback) { let e = "on"+evt;  if (this[e]) this[e]=this[e].filter(fn=>fn!=callback); }
    removeAllListeners(evt) { let e = "on"+evt;  delete this[e]; }
    // on("open", () => ... ) connection opened
    // on("close", () => ... ) connection closed
    // on("data", (data) => ... ) when data is received (as string)
    // on("line", (line) => ... ) when a line of data is received (as string), uses /r OR /n for lines
    // on("packet", (type,data) => ... ) when a packet is received (if .parsePackets=true)
    // on("ack", () => ... ) when an ACK is received (if .parsePackets=true)
    // on("nak", () => ... ) when an ACK is received (if .parsePackets=true)
    // writeLowLevel(string)=>Promise to be provided by implementor
    // closeLowLevel() to be provided by implementor
    // cb(dataStr) called if defined
    isOpen = false;       // is the connection actually open?
    isOpening = true;     // in the process of opening a connection?
    txInProgress = false; // is transmission in progress?
    txDataQueue = [];     // queue of {data,callback,maxLength,resolve}
    chunkSize = 20;       // Default size of chunks to split transmits into (BLE = 20, Serial doesn't care)
    parsePackets = false; // If set we parse the input stream for Espruino packet data transfers
    received = "";        // The data we've received so far - this gets reset by .write/eval/etc
    hadData = false;      // used when waiting for a block of data to finish being received
    flowControlWait = 0;  // If this is nonzero, we should hold off sending for that number of milliseconds (wait and decrement each time)
    rxDataHandlerLastCh = 0; // used by rxDataHandler - last received character
    rxDataHandlerPacket = undefined; // used by rxDataHandler - used for parsing
    rxDataHandlerTimeout = undefined; // timeout for unfinished packet
    rxLine = "";          // current partial line for on("line" event
    progressAmt = 0;      // When sending a file, how many bytes through are we?
    progressMax = 0;      // When sending a file, how long is it in bytes? 0 if not sending a file

    /// Called when sending data, and we take this (along with progressAmt/progressMax) and create a more detailed progress report
    updateProgress(chars, charsMax) {
      if (chars===undefined) return uart.writeProgress();
      if (this.progressMax)
        uart.writeProgress(this.progressAmt+chars, this.progressMax);
      else
      uart.writeProgress(chars, charsMax);
    }

    /** Called when characters are received. This processes them and passes them on to event listeners */
    rxDataHandler(data) {
      if (!(data instanceof ArrayBuffer)) console.warn("Serial port implementation is not returning ArrayBuffers");
      data = ab2str(data); // now a string!
      log(3, "Received "+JSON.stringify(data));
      if (this.parsePackets) {
        for (var i=0;i<data.length;i++) {
          let ch = data[i];
          // handle packet reception
          if (this.rxDataHandlerPacket!==undefined) {
            this.rxDataHandlerPacket += ch;
            ch = undefined;
            let flags = (this.rxDataHandlerPacket.charCodeAt(0)<<8) | this.rxDataHandlerPacket.charCodeAt(1);
            let len = flags & 0x1FFF;
            let rxLen = this.rxDataHandlerPacket.length;
            if (rxLen>=2 && rxLen>=(len+2)) {
              log(3, "Got packet end");
              if (this.rxDataHandlerTimeout) {
                clearTimeout(this.rxDataHandlerTimeout);
                this.rxDataHandlerTimeout = undefined;
              }
              this.emit("packet", flags&0xE000, this.rxDataHandlerPacket.substring(2));
              this.rxDataHandlerPacket = undefined; // stop packet reception
            }
          } else if (ch=="\x06") { // handle individual control chars
            log(3, "Got ACK");
            this.emit("ack");
            ch = undefined;
          } else if (ch=="\x15") {
            log(3, "Got NAK");
            this.emit("nak");
            ch = undefined;
          } else if (uart.flowControl && ch=="\x11") { // 17 -> XON
            log(2,"XON received => resume upload");
            this.flowControlWait = 0;
          } else if (uart.flowControl && ch=="\x13") { // 19 -> XOFF
            log(2,"XOFF received => pause upload (10s)");
            this.flowControlWait = 10000;
          } else if (ch=="\x10") { // DLE - potential start of packet (ignore)
            this.rxDataHandlerLastCh = "\x10";
            ch = undefined;
          } else if (ch=="\x01" && this.rxDataHandlerLastCh=="\x10") { // SOH
            log(3, "Got packet start");
            this.rxDataHandlerPacket = "";
            this.rxDataHandlerTimeout = setTimeout(()=>{
              this.rxDataHandlerTimeout = undefined;
              log(0, "Packet timeout (2s)");
              this.rxDataHandlerPacket = undefined;
            }, 2000);
            ch = undefined;
          }
          if (ch===undefined) { // if we're supposed to remove the char, do it
            data = data.substring(0,i)+data.substring(i+1);
            i--;
          } else
            this.rxDataHandlerLastCh = ch;
        }
      }
      this.hadData = true;
      if (data.length>0) {
        // keep track of received data
        if (this.received.length < 100000) // ensure we're not creating a memory leak
          this.received += data;
        // forward any data
        if (this.cb) this.cb(data);
        this.emit('data', data);
        // look for newlines and send out a 'line' event
        let lines = (this.rxLine + data).split(/\r\n/);
        while (lines.length>1)
          this.emit('line', lines.shift());
        this.rxLine = lines[0];
        if (this.rxLine.length > 10000) // only store last 10k characters
          this.rxLine = this.rxLine.slice(-10000);
      }
    }

    /** Called when the connection is opened */
    openHandler() {
      log(1, "Connected");
      this.txInProgress = false;
      this.isOpen = true;
      this.isOpening = false;
      this.received = "";
      this.hadData = false;
      this.flowControlWait = 0;
      this.rxDataHandlerLastCh = 0;
      this.rxLine = "";
      if (!this.isOpen) {
        this.isOpen = true;
        this.emit("open");
      }
      // if we had any writes queued, do them now
      this.write();
    }

    /** Called when the connection is closed - resets any stored info/rejects promises */
    closeHandler() {
      this.isOpening = false;
      this.txInProgress = false;
      this.txDataQueue = [];
      this.hadData = false;
      if (this.isOpen) {
        log(1, "Disconnected");
        this.isOpen = false;
        this.emit("close");
      }
    }

    /** Called to close the connection */
    close() {
      this.closeLowLevel();
      this.closeHandler();
    }

    /** Call this to send data, this splits data, handles queuing and flow control, and calls writeLowLevel to actually write the data.
     * 'callback' can optionally return a promise, in which case writing only continues when the promise resolves
     * @param {string} data
     * @param {() => Promise|void} callback
     * @returns {Promise}
      */
    write(data, callback) {
      let connection = this;
      return new Promise((resolve,reject) => {
        if (data) connection.txDataQueue.push({data:data,callback:callback,maxLength:data.length,resolve:resolve});
        if (connection.isOpen && !connection.txInProgress) writeChunk();

        function writeChunk() {
          if (connection.flowControlWait) { // flow control - try again later
            if (connection.flowControlWait>50) connection.flowControlWait-=50;
            else {
              log(2,"Flow Control timeout");
              connection.flowControlWait=0;
            }
            setTimeout(writeChunk, 50);
            return;
          }
          if (!connection.txDataQueue.length) { // we're finished!
            connection.txInProgress = false;
            connection.updateProgress();
            return;
          }
          connection.txInProgress = true;
          var chunk, txItem = connection.txDataQueue[0];
          connection.updateProgress(txItem.maxLength - (txItem.data?txItem.data.length:0), txItem.maxLength);
          if (txItem.data.length <= connection.chunkSize) {
            chunk = txItem.data;
            txItem.data = undefined;
          } else {
            chunk = txItem.data.substr(0,connection.chunkSize);
            txItem.data = txItem.data.substr(connection.chunkSize);
          }
          log(2, "Sending "+ JSON.stringify(chunk));
          connection.writeLowLevel(chunk).then(function() {
            log(3, "Sent");
            let promise = undefined;
            if (!txItem.data) {
              connection.txDataQueue.shift(); // remove this element
              if (txItem.callback)
                promise = txItem.callback();
              if (txItem.resolve)
                txItem.resolve();
            }
            if (!(promise instanceof Promise))
              promise = Promise.resolve();
            promise.then(writeChunk); // if txItem.callback() returned a promise, wait until it completes before continuing
          }, function(error) {
            log(1, 'SEND ERROR: ' + error);
            connection.updateProgress();
            connection.txDataQueue = [];
            connection.close();
          });
        }
      });
    }

    /* Send a packet of type "RESPONSE/EVAL/EVENT/FILE_SEND/DATA" to Espruino
        options = {
          noACK : bool (don't wait to acknowledgement - default=false)
          timeout : int (optional, milliseconds, default=5000) if noACK=false
        }
    */
    espruinoSendPacket(pkType, data, options) {
      options = options || {};
      if (!options.timeout) options.timeout=5000;
      if ("string"!=typeof data) throw new Error("'data' must be a String");
      if (data.length>0x1FFF) throw new Error("'data' too long");
      const PKTYPES = {
        RESPONSE : 0, // Response to an EVAL packet
        EVAL : 0x2000,  // execute and return the result as RESPONSE packet
        EVENT : 0x4000, // parse as JSON and create `E.on('packet', ...)` event
        FILE_SEND : 0x6000, // called before DATA, with {fn:"filename",s:123}
        DATA : 0x8000, // Sent after FILE_SEND with blocks of data for the file
        FILE_RECV : 0xA000 // receive a file - returns a series of PT_TYPE_DATA packets, with a final zero length packet to end
      }
      if (!(pkType in PKTYPES)) throw new Error("'pkType' not one of "+Object.keys(PKTYPES));
      let connection = this;
      return new Promise((resolve,reject) => {
        let timeout;
        function tidy() {
          if (timeout) {
            clearTimeout(timeout);
            timeout = undefined;
          }
          connection.removeListener("ack",onACK);
          connection.removeListener("nak",onNAK);
        }
        function onACK(ok) {
          tidy();
          setTimeout(resolve,0);
        }
        function onNAK(ok) {
          tidy();
          setTimeout(reject,0,"NAK while sending packet");
        }
        if (!options.noACK) {
          connection.parsePackets = true;
          connection.on("ack",onACK);
          connection.on("nak",onNAK);
        }
        let flags = data.length | PKTYPES[pkType];
        connection.write(String.fromCharCode(/*DLE*/16,/*SOH*/1,(flags>>8)&0xFF,flags&0xFF)+data, function() {
          // write complete
          if (options.noACK) {
            setTimeout(resolve,0); // if not listening for acks, just resolve immediately
          } else {
            timeout = setTimeout(function() {
              timeout = undefined;
              tidy();
              reject(`Timeout (${options.timeout}ms) while sending packet`);
            }, options.timeout);
          }
        }, err => {
          tidy();
          reject(err);
        });
      });
    }
    /* Send a file to Espruino using 2v25 packets.
        options = { // mainly passed to Espruino
          fs : true // optional -> write using require("fs") (to SD card)
          noACK : bool // (don't wait to acknowledgements)
          chunkSize : int // size of chunks to send (default 1024) for safety this depends on how big your device's input buffer is if there isn't flow control
          progress : (chunkNo,chunkCount)=>{} // callback to report upload progress
          timeout : int (optional, milliseconds, default=1000)
    } */
    espruinoSendFile(filename, data, options) {
      if ("string"!=typeof data) throw new Error("'data' must be a String");
      let CHUNK = 1024;
      options = options||{};
      options.fn = filename;
      options.s = data.length;
      let packetOptions = {};
      let progressHandler =  (chunkNo,chunkCount)=>{};
      if (options.noACK !== undefined) {
        packetOptions.noACK = !!options.noACK;
        delete options.noACK;
      }
      if (options.chunkSize) {
        CHUNK = options.chunkSize;
        delete options.chunkSize;
      }
      if (options.progress) {
        progressHandler = options.progress;
        delete options.progress;
      }
      options.fs = options.fs?1:0; // .fs => use SD card
      if (!options.fs) delete options.fs; // default=0, so just remove if it's not set
      let connection = this;
      let packetCount = 0, packetTotal = Math.ceil(data.length/CHUNK)+1;
      connection.progressAmt = 0;
      connection.progressMax = 100 + data.length;
      // always ack the FILE_SEND
      progressHandler(0, packetTotal);
      return connection.espruinoSendPacket("FILE_SEND",JSON.stringify(options)).then(sendData, err=> {
        connection.progressAmt = 0;
        connection.progressMax = 0;
        throw err;
      });
      // but if noACK don't ack for data
      function sendData() {
        connection.progressAmt += connection.progressAmt?CHUNK:100;
        progressHandler(++packetCount, packetTotal);
        if (data.length==0) {
          connection.progressAmt = 0;
          connection.progressMax = 0;
          return Promise.resolve();
        }
        let packet = data.substring(0, CHUNK);
        data = data.substring(CHUNK);
        return connection.espruinoSendPacket("DATA", packet, packetOptions).then(sendData, err=> {
          connection.progressAmt = 0;
          connection.progressMax = 0;
          throw err;
        });
      }
    }
    /* Receive a file from Espruino using 2v25 packets.
        options = { // mainly passed to Espruino
          fs : true // optional -> write using require("fs") (to SD card)
          timeout : int // milliseconds timeout (default=2000)
          progress : (bytes)=>{} // callback to report upload progress
        }
    } */
    espruinoReceiveFile(filename, options) {
      options = options||{};
      options.fn = filename;
      if (!options.progress)
        options.progress =  (bytes)=>{};
      let connection = this;
      return new Promise((resolve,reject) => {
        let fileContents = "", timeout;
        function scheduleTimeout() {
          if (timeout) clearTimeout(timeout);
          timeout = setTimeout(() => {
            timeout = undefined;
            cleanup();
            reject("espruinoReceiveFile Timeout");
          }, options.timeout || 2000);
        }
        function cleanup() {
          connection.removeListener("packet", onPacket);
          if (timeout) {
            clearTimeout(timeout);
            timeout = undefined;
          }
        }
        function onPacket(type,data) {
          if (type!=0x8000) return; // ignore things that are not DATA packet
          if (data.length==0) { // 0 length packet = EOF
            cleanup();
            setTimeout(resolve,0,fileContents);
          } else {
            fileContents += data;
            options.progress(fileContents.length);
            scheduleTimeout();
          }
        }
        connection.parsePackets = true;
        connection.on("packet", onPacket);
        scheduleTimeout();
        options.progress(0);
        connection.espruinoSendPacket("FILE_RECV",JSON.stringify(options)).then(()=>{
          // now wait...
        }, err => {
          cleanup();
          reject(err);
        });
      });
    }
    /* Send a JS expression to be evaluated on Espruino using using 2v25 packets.
        options = {
            timeout : int // milliseconds timeout (default=1000)
            stmFix : bool // if set, this works around an issue in Espruino STM32 2v24 and earlier where USB could get in a state where it only sent small chunks of data at a time
        }*/
    espruinoEval(expr, options) {
      options = options || {};
      if ("string"!=typeof expr) throw new Error("'expr' must be a String");
      let connection = this;
      return new Promise((resolve,reject) => {
        let prodInterval;

        function cleanup() {
          connection.removeListener("packet", onPacket);
          if (timeout) {
            clearTimeout(timeout);
            timeout = undefined;
          }
          if (prodInterval) {
            clearInterval(prodInterval);
            prodInterval = undefined;
          }
        }
        function onPacket(type,data) {
          if (type!=0) return; // ignore things that are not a response
          cleanup();
          setTimeout(resolve,0, parseRJSON(data));
        }
        connection.parsePackets = true;
        connection.on("packet", onPacket);
        let timeout = setTimeout(() => {
          timeout = undefined;
          cleanup();
          reject("espruinoEval Timeout");
        }, options.timeout || 1000);
        connection.espruinoSendPacket("EVAL",expr,{noACK:options.stmFix}).then(()=>{
          // resolved/rejected with 'packet' event or timeout
          if (options.stmFix)
            prodInterval = setInterval(function() {
              connection.write(" \x08") // space+backspace
              .catch(err=>{
                console.error("Error sending STM fix:",err);
                cleanup();
              });
            }, 50);
        }, err => {
          cleanup();
          reject(err);
        });
      });
    }
  } // End of Connection class


  function init() {
    Espruino.Core.Config.add("BAUD_RATE", {
      section : "Communications",
      name : "Baud Rate",
      description : "When connecting over serial, this is the baud rate that is used. 9600 is the default for Espruino",
      type : {9600:9600,14400:14400,19200:19200,28800:28800,38400:38400,57600:57600,115200:115200},
      defaultValue : 9600,
    });
    Espruino.Core.Config.add("SERIAL_IGNORE", {
      section : "Communications",
      name : "Ignore Serial Ports",
      description : "A '|' separated list of serial port paths to ignore, eg `/dev/ttyS*|/dev/*.SOC`",
      type : "string",
      defaultValue : "/dev/ttyS*|/dev/*.SOC|/dev/*.MALS"
    });
    Espruino.Core.Config.add("SERIAL_FLOW_CONTROL", {
      section : "Communications",
      name : "Software Flow Control",
      description : "Respond to XON/XOFF flow control characters to throttle data uploads. By default Espruino sends XON/XOFF for USB and Bluetooth (on 2v05+).",
      type : "boolean",
      defaultValue : true
    });
    Espruino.Core.Config.add("STORAGE_UPLOAD_METHOD", {
      section : "Communications",
      name : "Storage Upload Strategy",
      description :
  "On some connections (Serial, >9600 baud) XON/XOFF flow control is too slow to reliably throttle data transfer when writing files, "+
  "and data can be lost. By default we add a delay after each write to Storage to help avoid this, but if your connection is stable "+
  "you can turn this off and greatly increase write speeds.",
      type : {
        0: "Delay Storage writes",
        1: "No delays"
      },
      defaultValue : 0
    });

    var connection = Espruino.Core.Serial.connection;
    connection.cb = (dataStr) => {
      if (readListener) readListener(Espruino.Core.Utils.stringToArrayBuffer(dataStr));
    };
    connection.writeLowLevel = (dataStr) => {
      return new Promise(resolve => currentDevice.write(dataStr, resolve));
    };


    var devices = Espruino.Core.Serial.devices;
    for (var i=0;i<devices.length;i++) {
      console.log("  - Initialising Serial "+devices[i].name);
      if (devices[i].init)
        devices[i].init();
    }
  }

  var startListening=function(callback) {
    var oldListener = readListener;
    readListener = callback;
    return oldListener;
  };

  /**
   * List ports available over all configured devices.
   * `shouldCallAgain` mean that more devices may appear later on (eg. Bluetooth LE)
   * @param {(ports, shouldCallAgain) => void} callback
   */
  var getPorts = function (callback) {
    var newPortToDevice = {};

    var devices = Espruino.Core.Serial.devices;
    if (!devices || devices.length == 0) {
      portToDevice = newPortToDevice;
      return callback(ports, false);
    }

    // Test to see if a given port path is ignore or not by configuration
    function isIgnored(path) {
      if (!Espruino.Config.SERIAL_IGNORE) return false;

      return Espruino.Config.SERIAL_IGNORE.split("|").some((wildcard) => {
        const regexp = new RegExp(
          `^${wildcard.replace(/\./g, "\\.").replace(/\*/g, ".*")}$`
        );

        return path.match(regexp);
      });
    }

    // Asynchronously call 'getPorts' on all devices and map results back as a series of promises
    Promise.all(
      devices.map((device) =>
        new Promise((resolve) => device.getPorts(resolve)).then(
          (devicePorts, instantPorts) => ({
            device: device,
            shouldCallAgain: !instantPorts, // If the ports are not present now (eg. BLE) then call again
            value: (devicePorts || [])
              .filter((port) => !isIgnored(port.path)) // Filter out all the ignored ports
              .map((port) => {
                // Map a description for this particular Product/Vendor
                if (port.usb && port.usb[0] == 0x0483 && port.usb[1] == 0x5740)
                  port.description = "Espruino board";
                return port;
              }),
          })
        )
      )
    ).then((results) => {
      portToDevice = results.reduce((acc, promise) => {
        promise.value.forEach((port) => (acc[port.path] = promise.device));
        return acc;
      }, {});

      callback(
        results
          .flatMap((result) => result.value)
          .sort((a, b) => {
            if (a.unimportant && !b.unimportant) return 1;
            if (b.unimportant && !a.unimportant) return -1;
            return 0;
          }),
        results.some((result) => result.shouldCallAgain),
      );
    });
  };

  var openSerial=function(serialPort, connectCallback, disconnectCallback) {
    Espruino.Core.Serial.setSlowWrite(true); // force slow write to ensure things work ok - we may disable this when versionChecker figures out what board/version we use
    return openSerialInternal(serialPort, connectCallback, disconnectCallback, 5);
  }

  var openSerialInternal=function(serialPort, connectCallback, disconnectCallback, attempts) {
    /* If openSerial is called, we need to have called getPorts first
    in order to figure out which one of the serial_ implementations
    we must call into. */
    if (portToDevice === undefined) {
      portToDevice = {}; // stop recursive calls if something errors
      return getPorts(function() {
        openSerialInternal(serialPort, connectCallback, disconnectCallback, attempts);
      });
    }

    if (!(serialPort in portToDevice)) {
      if (serialPort.toLowerCase() in portToDevice) {
        serialPort = serialPort.toLowerCase();
      } else {
        if (attempts>0) {
          console.log("serial: Port "+JSON.stringify(serialPort)+" not found - checking ports again ("+attempts+" attempts left)");
          setTimeout(function() {
            getPorts(function() {
              openSerialInternal(serialPort, connectCallback, disconnectCallback, attempts-1);
            });
          }, 500);
          return;
        } else {
          console.error("serial: Port "+JSON.stringify(serialPort)+" not found");
          return connectCallback(undefined);
        }
      }
    }

    Espruino.Core.Serial.connection.isOpen = false;
    Espruino.Core.Serial.connection.isOpening = true;
    var portInfo = { port:serialPort };
    var connectionInfo = undefined;
    currentDevice = portToDevice[serialPort];
    currentDevice.open(serialPort, function(cInfo) {  // CONNECT
      if (!cInfo) {
//        Espruino.Core.Notifications.error("Unable to connect");
        console.error("Unable to open device (connectionInfo="+cInfo+")");
        connectCallback(undefined);
        connectCallback = undefined;
        currentDevice = undefined;
      } else {
        connectionInfo = cInfo;
        Espruino.Core.Serial.connection.isOpen = true;
        Espruino.Core.Serial.connection.isOpening = false;
        console.log("serial: Connected", cInfo);
        if (connectionInfo.portName)
          portInfo.portName = connectionInfo.portName;
        Espruino.callProcessor("connected", portInfo, function() {
          connectCallback(cInfo);
          connectCallback = undefined;
        });
      }
    }, buf => Espruino.Core.Serial.connection.rxDataHandler(buf), // RECEIEVE DATA
    function(error) { // DISCONNECT
      currentDevice = undefined;
      Espruino.Core.Serial.connection.closeHandler();
      sendingBinary = false;
      if (connectCallback) {
        // we got a disconnect when we hadn't connected...
        // Just call connectCallback(undefined), don't bother sending disconnect
        connectCallback(error);
        connectCallback = undefined;
        connectionInfo = undefined;
        return;
      }
      Espruino.callProcessor("disconnected", portInfo, function() {
        if (disconnectCallback) disconnectCallback(portInfo);
        disconnectCallback = undefined;
      });
    });
  };

  var closeSerial=function() {
    if (currentDevice) {
      currentDevice.close();
      currentDevice = undefined;
    } else
      console.error("Close called, but serial port not open");
  };

  var isConnected = function() {
    return currentDevice!==undefined;
  };

  var findSplitIdx = function(data, prev, substr, delay, reason) {
    var match = data.match(substr);
    // not found
    if (match===null) return prev;
    // or previous find was earlier in str
    var end = match.index + match[0].length;
    if (end > prev.end) return prev;
    // found, and earlier
    prev.start = match.index;
    prev.end = end;
    prev.delay = delay;
    prev.match = match[0];
    prev.reason = reason;
    return prev;
  }

  var writeSerialWorker = function(writeData) {
    var blockSize = 512;
    if (currentDevice.maxWriteLength)
      blockSize = currentDevice.maxWriteLength;
    /* if we're throttling our writes we want to send small
      * blocks of data at once. We still limit the size of
      * sent blocks to 512 because on Mac we seem to lose
      * data otherwise (not on any other platforms!) */
    if (slowWrite) blockSize=19;

    writeData.showStatus &= writeData.data.length>blockSize;
    uart.showProgress = writeData.showStatus;
    if (writeData.showStatus) {
      Espruino.Core.Status.setStatus("Sending...", writeData.data.length);
      console.log("serial: ---> "+JSON.stringify(writeData.data));
    }

    while (writeData.data.length>0) {
      let d = undefined;
      let split = writeData.nextSplit || { start:0, end:writeData.data.length, delay:0 };
      // if we get something like Ctrl-C or `reset`, wait a bit for it to complete
      if (!sendingBinary) {
        split = findSplitIdx(writeData.data, split, /\x03/, 250, "Ctrl-C"); // Ctrl-C
        split = findSplitIdx(writeData.data, split, /reset\(\);?\n/, 250, "reset()"); // Reset
        split = findSplitIdx(writeData.data, split, /load\(\);?\n/, 250, "load()"); // Load
        split = findSplitIdx(writeData.data, split, /Modules.addCached\("[^\n]*"\);?\n/, 250, "Modules.addCached"); // Adding a module
        if ((0|Espruino.Config.STORAGE_UPLOAD_METHOD)==0) // only throttle writes if we haven't disabled it
          split = findSplitIdx(writeData.data, split, /require\("Storage"\).write\([^\n]*\);?\n/, 250, "Storage.write"); // Write chunk of data
      }
      if (split.match) console.log("serial: Splitting for "+split.reason+", delay "+split.delay);
      // Only send some of the data
      if (writeData.data.length>split.end) {
        if (slowWrite && split.delay==0) split.delay=50;
        d = writeData.data.substr(0,split.end);
        writeData.data = writeData.data.substr(split.end);
        if (writeData.nextSplit) {
          writeData.nextSplit.start -= split.end;
          writeData.nextSplit.end -= split.end;
          if (writeData.nextSplit.end<=0)
            writeData.nextSplit = undefined;
        }
      } else {
        d = writeData.data;
        writeData.data = "";
        writeData.nextSplit = undefined;
      }

      let isLast = writeData.data.length == 0;
      // actually write data
      //console.log("serial: Sending block "+JSON.stringify(d)+", wait "+split.delay+"ms");
      Espruino.Core.Serial.connection.chunkSize = blockSize;
      Espruino.Core.Serial.connection.write(d, function() { // write data, but the callback returns a promise that delays
        // update status
        /*if (writeData.showStatus)
          Espruino.Core.Status.incrementProgress(d.length);*/
        return new Promise(resolve => setTimeout(function() {
          if (isLast && writeData.showStatus) {
            uart.showProgress = false;
            Espruino.Core.Status.setStatus("Sent");
            if (writeData.callback)
              writeData.callback();
          }
          resolve();
        }, split.delay));
      });
    }
  }

   // Throttled serial write
  var writeSerial = function(data, showStatus, callback) {
    if (showStatus===undefined) showStatus=true;
    writeSerialWorker({data:data,callback:callback,showStatus:showStatus});
  };

  // ----------------------------------------------------------
  Espruino.Core.Serial = {
    "devices" : [], // List of devices that can provide a serial API
    "init" : init,
    "getPorts": getPorts,
    "open": openSerial,
    "isConnected": isConnected,
    "startListening": startListening,
    "write": writeSerial, // function(data, showStatus, callback)
    "close": closeSerial,
    "isSlowWrite": function() { return slowWrite; },
    "setSlowWrite": function(isOn, force) {
      var SERIAL_THROTTLE_SEND = 0|Espruino.Config.SERIAL_THROTTLE_SEND;
      var reason = "";
      if (force) {
        reason = "(forced)";
      } else if (SERIAL_THROTTLE_SEND==1) {
        reason = "('Throttle Send'='Always')";
        isOn = true;
      } else  if (SERIAL_THROTTLE_SEND==2) {
        reason = "('Throttle Send'='Never')";
        isOn = false;
      } else
        reason =  "('Throttle Send'='Auto')";
      console.log(`serial: Set Slow Write = ${isOn} ${reason}`);
      slowWrite = isOn;
    },
    "setBinary": function(isOn) {
      sendingBinary = isOn;
    },
    "connection": new Connection(),
    "debug": function() { logLevel = 3; } // output extra debug info
  };
})();
/* --------------------------------------------------------------
         EspruinoTools/core/serial_chrome_serial.js
   -------------------------------------------------------------- */
/**
Copyright 2012 Google Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Author: Renato Mangini (mangini@chromium.org)
Author: Luis Leao (luisleao@gmail.com)
Author: Gordon Williams (gw@pur3.co.uk)
**/

(function() {
  if (typeof chrome === 'undefined' || chrome.serial===undefined) {
    console.log("No chrome.serial - Chrome Serial disabled");
    return;
  }
  if (chrome.serial.getDevices===undefined) {
    // wrong chrome version
    console.log("Chrome does NOT have post-M33 serial API");
    return;
  }

  var connectionInfo;
  // var connectedPort; // unused?
  var connectionDisconnectCallback;
  var connectionReadCallback;

  var getPorts=function(callback) {
    chrome.serial.getDevices(function(devices) {

      var prefix = "";
      // Workaround for Chrome v34 bug - http://forum.espruino.com/conversations/1056/#comment16121
      // In this case, ports are reported as ttyACM0 - not /dev/ttyACM0
      if (navigator.userAgent.indexOf("Linux")>=0) {
        var hasSlashes = false;
        devices.forEach(function(device) { if (device.path.indexOf("/")>=0) hasSlashes=true; });
        if (!hasSlashes) prefix = "/dev/";
      }

      callback(devices.map(function(device) {
        return {
                path : prefix+device.path,
                description : device.displayName,
                usb : [device.vendorId, device.productId]};
      }), true/*instantPorts*/);
    });
  };

  var openSerial=function(serialPort, openCallback, receiveCallback, disconnectCallback) {
    connectionReadCallback = receiveCallback;
    connectionDisconnectCallback = disconnectCallback;
    chrome.serial.connect(serialPort, {bitrate: parseInt(Espruino.Config.BAUD_RATE)},
      function(cInfo) {
        if (!cInfo) {
          console.log("Unable to open device (connectionInfo="+cInfo+")");
          openCallback(undefined);
        } else {
          connectionInfo = cInfo;
          // connectedPort = serialPort;
          console.log(cInfo);
          openCallback(cInfo);
        }
    });
  };

  var closeSerial=function() {
    if (connectionInfo)
      chrome.serial.disconnect(connectionInfo.connectionId, connectionDisconnectCallback);
    connectionReadCallback = undefined;
    connectionDisconnectCallback = undefined;
    connectionInfo=null;
  };

  var writeSerial = function(data, callback) {
    chrome.serial.send(connectionInfo.connectionId, Espruino.Core.Utils.stringToArrayBuffer(data), callback);
  };

  // ----------------------------------------------------------
  chrome.serial.onReceive.addListener(function(receiveInfo) {
    if (connectionReadCallback!==undefined)
      connectionReadCallback(receiveInfo.data);
  });

  chrome.serial.onReceiveError.addListener(function(errorInfo) {
    console.error("RECEIVE ERROR:", JSON.stringify(errorInfo));
    closeSerial();
  });

  Espruino.Core.Serial.devices.push({
    "name" : "Chrome Serial",
    "getPorts": getPorts,
    "open": openSerial,
    "write": writeSerial,
    "close": closeSerial,
  });
})();
/* --------------------------------------------------------------
         EspruinoTools/core/serial_chrome_socket.js
   -------------------------------------------------------------- */
/**
Copyright (c) 2014 Espruino Project

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Author: Patrick Van Oosterwijck (patrick@silicognition.com)
**/

(function() {
  if (typeof chrome === 'undefined' || chrome.sockets===undefined) {
    console.log("No chrome.sockets - Chrome Socket disabled");
    return;
  }

  function init() {
    Espruino.Core.Config.add("SERIAL_TCPIP", {
      section : "Communications",
      name : "Connect over TCP Address",
      description : "When connecting, add a menu item to connect to a given TCP/IP address (eg. `192.168.1.2` or `192.168.1.2:23`). Leave blank to disable. Separate multiple ip addresses with a semi-colon.",
      type : "string",
      defaultValue : "",
    });
  }

  var connectionInfo;
  var readListener;
  var connectionDisconnectCallback;
  var connectionReadCallback;

  var getPorts = function(callback) {
    if (Espruino.Config.SERIAL_TCPIP.trim() != "") {
      var ips = Espruino.Config.SERIAL_TCPIP.trim().split(";");
      var portList = [];
      ips.forEach(function(s) {
        s = s.trim();
        if (s.length) portList.push({path:'TCP/IP: '+s, description:"Network connection", type:"socket"});
      })
      callback(portList, true/*instantPorts*/);
    } else
      callback(undefined, true/*instantPorts*/);
  };

  var openSerial=function(serialPort, openCallback, receiveCallback, disconnectCallback) {
    if (serialPort.substr(0,8)!='TCP/IP: ') {
      console.error("Invalid connection "+JSON.stringify(serialPort));
      return;
    }
    var host = serialPort.substr(8);
    var port = 23;
    if (host.indexOf(":") >= 0) {
      var i = host.indexOf(":");
      port = parseInt(host.substr(i+1).trim());
      host = host.substr(0,i).trim();
      if (host=="") host="localhost";
    }

    connectionReadCallback = receiveCallback;
    connectionDisconnectCallback = disconnectCallback;
    chrome.sockets.tcp.create({}, function(createInfo) {
      chrome.sockets.tcp.connect(createInfo.socketId,
          host, port, function (result) {
        if (result < 0) {
          console.log("Failed to open socket " + host+":"+port);
          openCallback(undefined);
        } else {
          connectionInfo = { socketId: createInfo.socketId };
          openCallback(connectionInfo);
        }
      });
    });
  };

  var closeSerial = function() {
    if (connectionInfo) {
      chrome.sockets.tcp.disconnect(connectionInfo.socketId,
        function () {
          connectionInfo=null;
          connectionDisconnectCallback();
          connectionDisconnectCallback = undefined;
      });
    }
  };

  var writeSerial = function(data, callback) {
    chrome.sockets.tcp.send(connectionInfo.socketId, Espruino.Core.Utils.stringToArrayBuffer(data), callback);
  };

  // ----------------------------------------------------------
  chrome.sockets.tcp.onReceive.addListener(function(info) {
    if (info.socketId != connectionInfo.socketId)
      return;
    if (connectionReadCallback!==undefined)
      connectionReadCallback(info.data);
  });

  chrome.sockets.tcp.onReceiveError.addListener(function(info) {
    if (info.socketId != connectionInfo.socketId)
      return;
    console.error("RECEIVE ERROR:", JSON.stringify(info));
    connectionDisconnectCallback();
  });

  Espruino.Core.Serial.devices.push({
    "name" : "Chrome Socket",
    "init" : init,
    "getPorts": getPorts,
    "open": openSerial,
    "write": writeSerial,
    "close": closeSerial,
  });
})();
/* --------------------------------------------------------------
         EspruinoTools/core/serial_node_serial.js
   -------------------------------------------------------------- */
/*
Gordon Williams (gw@pur3.co.uk)
*/
(function() {
  // Are we on nw.js with chrome.serial? No need for serialport then!
  if (typeof chrome !== 'undefined' && chrome.serial) {
    console.log("We have chrome.serial - not using 'serialport' module");
    return;
  }
  if (typeof process === 'undefined') return;
  var serialport;
  try {
    require.resolve('serialport');
  } catch (e) {
    console.log("No 'serialport' module found");
    return;
  }
  try {
    serialport = require('serialport').SerialPort;
  } catch (e) {
    console.log("Error initialising 'serialport':" + e.toString());
    return;
  }

  var connection = undefined;

  var getPorts=function(callback) {
    serialport.list().then(function(ports) {
      if (ports===undefined) return callback([], true/*instantPorts*/);
      // On Linux we get spammed with ttySx ports - remove these
      if (process.platform == 'linux')
        ports = ports.filter(function(port) { return !port.path.match(/^\/dev\/ttyS[0-9]*$/); });

        /**
         * Filter the available serial ports to find the one(s)
         * most likely to be an espruino (genuine, or at least STM32Fxxx based
         *
         * According to http://www.linux-usb.org/usb.ids
         * vendorId === '0x0483' -> STMicroelectronics
         * productId === '0x5740' -> STM32F407
         *
         * What is below works great for both Espruino boards, but fails for:
         *   * USB-TTL adaptors
         *   * Bluetooth Serial
         *   * BBC micro:bit, Nordic devkits, etc
         *
         * So can't be left in. TODO: return an object for each USB serial device
         * and have a `preferred : bool` field in it. Then if many devices are found
         * but only one is preferred, use that.
         */
//          .filter(function(e) {
//            return (e.vendorId === '0x0483' && e.productId === '0x5740');
//          })
      callback(ports.map(function(port) {
            // port.pnpId could be handy
            var vid = parseInt(port.vendorId);
            var pid = parseInt(port.productId);
            var d = { path : port.path };
            if (vid||pid) d.usb = [vid,pid];
            if (port.manufacturer) d.description = port.manufacturer;
            if (!port.vendorId || !port.productId) d.unimportant = true;
            return d;
          }), true/*instantPorts*/
      );
    }).catch(function(err) {
      console.log("serialport error: "+err.toString());
      return callback([], true/*instantPorts*/);
    });
  };

  var openSerial=function(serialPort, openCallback, receiveCallback, disconnectCallback) {
    // https://github.com/voodootikigod/node-serialport#reference-guide
    connection = new serialport({
        path : serialPort,
        baudRate: parseInt(Espruino.Config.BAUD_RATE)
    });
    connection.on('open', function() {
      openCallback("Ok");
    });
    connection.on('data', function(data) {
      if (receiveCallback !== undefined) {
        var a = new Uint8Array(data.length);
        for (var i=0;i<data.length;i++)
          a[i] = data[i];
        receiveCallback(a.buffer);
      }
    });
    connection.on('close', function() {
      disconnectCallback();
      connection = undefined;
    });
  };

  var closeSerial=function(callback) {
    connection.close(callback);
  };

  var writeSerial = function(data, callback) {
    // convert to an array - if we put a string into
    // a Buffer (expected by nodeserial) then I think
    // it gets interpreted as UTF8
    var a = Buffer.alloc(data.length);
    for (var i=0;i<data.length;i++)
      a[i] = data.charCodeAt(i);
    connection.write(a, callback);
  };

  // ----------------------------------------------------------
  Espruino.Core.Serial.devices.push({
    "name" : "Node Serial",
    "getPorts": getPorts,
    "open": openSerial,
    "write": writeSerial,
    "close": closeSerial,
  });
})();
/* --------------------------------------------------------------
         EspruinoTools/core/serial_web_audio.js
   -------------------------------------------------------------- */
(function() {

  var BAUD = 9600;

  /**
   * @param {boolean} ignoreSettings 
   * @returns {{warning?: string, error?: string} | boolean}
   */
  function getStatus(ignoreSettings) {
    if (typeof navigator == "undefined" || typeof window == "undefined") {
      return {warning:"Not running in a browser"};
    }
    // Fix up prefixing
    window.AudioContext = window.AudioContext || window.webkitAudioContext;
    if (!window.AudioContext) {
      return {error:"No window.AudioContext"};
    }
    navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
    if (!navigator.getUserMedia) {
      return {error:"No navigator.getUserMedia"};
    }
    if (!ignoreSettings && Espruino.Config.SERIAL_AUDIO == 0)
      return {warning:`"Connect over Audio" disabled in settings`};
    return true;
  }

  var OK = true;

  var dataToSend = "";
  var writtenCallback = undefined;
  var soundDebugFn = undefined;

  var soundInputPolarity = -1;
  var soundOutputPolarity = -1;

  var context;
  var userMediaStream;
  var inputNode;
  var bitTime;

  // Used when getting data from sound
  var inSamples = undefined; // data received
  var inSampleCounter = 0; // number of samples while value is the same (==bits)

  // Used when creating sounds from data
  var outSampleCounter = 0;
  var outSample = undefined;

  var lastBitValue = 1;
  var minValue = 0; // a running minimum value so we can take account of the capacitor


  var connected = false;
  var connectionDisconnectCallback;
  var connectionReadCallback;

  function init() {
    Espruino.Core.Config.add("SERIAL_AUDIO", {
      section : "Communications",
      name : "Connect over Audio",
      descriptionHTML : 'Allow connection to Espruino (at 9600 baud) using the headphone jack. See <a href="http://www.espruino.com/Headphone" target="_blank">espruino.com/Headphone</a>',
      type : { "0":"Disabled", "PP":"Normal Signal Polarity", "NN":"Fully Inverted", "NP":"Input Inverted", "PN":"Output Inverted" },
      defaultValue : "0",
    });

    OK = getStatus(true) === true;
  }

  var getPorts=function(callback) {
    if (OK && Espruino.Config.SERIAL_AUDIO != 0)
      callback([{path:'Audio',description:'Serial over Audio', type:"audio"}], true/*instantPorts*/);
    else
      callback(undefined, true/*instantPorts*/);
  };

  var openSerial=function(serialPort, openCallback, receiveCallback, disconnectCallback) {
    connectionReadCallback = receiveCallback;
    connectionDisconnectCallback = disconnectCallback;

    soundInputPolarity = (Espruino.Config.SERIAL_AUDIO[0]=="N") ? -1 : 1;
    soundOutputPolarity = (Espruino.Config.SERIAL_AUDIO[1]=="N") ? -1 : 1;

    if (!context) {
      context = new AudioContext();
      inputNode = context.createScriptProcessor(4096, 1/*in*/, 1/*out*/);
      window.dontGarbageCollectMePlease = inputNode;
      inputNode.onaudioprocess = audioProcessor;
      console.log("serial_audio: Audio Sample rate : "+context.sampleRate);

      bitTime = context.sampleRate / BAUD; // intentionally a float
      console.log("serial_audio: Audio Serial Baud", BAUD, "Bit time", bitTime);
    }

    navigator.getUserMedia({
        video:false,
        audio:{
          mandatory:[],
          optional:[{ echoCancellation:false },{sampleRate:44100}]
        }
      }, function(stream) {
        userMediaStream = stream;
        var inputStream = context.createMediaStreamSource(stream);
        inputStream.connect(inputNode);
        inputNode.connect(context.destination);
        connected = true;
        openCallback("Hello");
      }, function(e) {
        console.log('serial_audio: getUserMedia error', e);
        openCallback(undefined);
    });
  };

  var closeSerial=function() {
    connected = false;
    userMediaStream.stop();
    connectionDisconnectCallback();
  };

  // Throttled serial write
  var writeSerial = function(data, callback) {
    if (!connected) return; // throw data away
    dataToSend += data;
    writtenCallback = callback;
  };

  function audioProcessor(e) {
    var data = e.inputBuffer.getChannelData(0);
    var dataout = e.outputBuffer.getChannelData(0);

    var charactersRead = "";

    for (var i = 0; i < data.length; ++i) {
      // -------------------------------------------- Input
      var dataValue = data[i]*soundInputPolarity;
      // work out what our bit is...
      // keep track of the minimum (actually the max - sig is inverted)
      // then when signal is a bit above(below) that, it's a 1
      var value = dataValue < (minValue+0.1);
      minValue += 0.002;
      if (dataValue < minValue) minValue = dataValue;

      // if we've counted past a bit
       if (inSampleCounter >= bitTime ||
          ((value!=lastBitValue) && (inSamples===undefined || inSampleCounter>=bitTime/2))) {
        inSampleCounter -= bitTime;
        if (inSamples===undefined) {
          // detect start bit, else ignore
          if (!lastBitValue)
            inSamples="";
        } else {
          inSamples = (lastBitValue?"1":"0") + inSamples;
          if (inSamples.length>=9) {
            // STOP,D7,D6,D5,D4,D3,D2,D1,D0
            var byteData = inSamples.substr(-8); // extract D7..D0
            var byteVal = parseInt(byteData,2);
  //        console.log(byteData, byteVal, String.fromCharCode(byteVal));
            charactersRead += String.fromCharCode(byteVal);
            inSamples=undefined; // wait for next start bit
          }
        }
      }
      // if the value has changed, reset our sample counter
      if (value!=lastBitValue) {
        inSampleCounter = 0;
      }
      inSampleCounter++;
      lastBitValue = value;


      // ---------------------------------------------------------------------
      // -------------------------------------------- Output
      if (outSample===undefined && dataToSend.length && i>100) {
        outSample = (dataToSend.charCodeAt(0)<<1) | 512;
        // Start bit of 0, data, then stop bit of 1
        dataToSend = dataToSend.substr(1);
        outSampleCounter = 0;

        if (!dataToSend.length && writtenCallback) {
          writtenCallback();
          writtenCallback = undefined;
        }
      }
      if (outSample!==undefined) {
        dataout[i] = (outSample &(1<<Math.floor(outSampleCounter/bitTime))) ? soundOutputPolarity : -soundOutputPolarity;
        outSampleCounter++;
        if (outSampleCounter >= bitTime*10) {
          outSample = undefined; // stop output of byte
        }
      } else
        dataout[i] = soundOutputPolarity; // idle state = 1
    }

    // print debug information
    if (soundDebugFn) {
      var sum = 0;
      var bits = new Array(data.length);
      var mv = new Array(data.length);
      for (var i = 0; i < data.length; ++i) {
        // just what we do above
        var value = dataValue < (minValue+0.1);
        minValue += 0.002;
        if (dataValue < minValue) minValue = dataValue;
        bits[i] = value;
        mv[i] = minValue;
        sum += data[i]*data[i];
      }

      if (sum>0.01*data.length) {
        setTimeout(function() {
          soundDebugFn(data,mv);
        }, 10);
      }
    }

    // call our listener if we've got characters in
    if (charactersRead && connectionReadCallback) {
      setTimeout(function() {
        // send an arraybuffer, not a string
        var arr = new Uint8Array(charactersRead.length);
        for (var i=0;i<charactersRead.length;i++)
          arr[i] = charactersRead.charCodeAt(i);
        connectionReadCallback(arr.buffer);
      }, 10);
    }
  }

  // ----------------------------------------------------------

  Espruino.Core.Serial.devices.push({
    "name" : "Web Audio",
    "init" : init,
    "getStatus": getStatus,
    "getPorts": getPorts,
    "open": openSerial,
    "write": writeSerial,
    "close": closeSerial,
    "setSoundDebugFunction": function(fn) {
      soundDebugFn = fn;
    },
    "setSoundPolarity": function(rxPol, txPol) {  // either 1 or -1
      soundInputPolarity = rxPol;
      soundOutputPolarity = txPol;
    },
  });
})();
/* --------------------------------------------------------------
         EspruinoTools/core/serial_web_bluetooth.js
   -------------------------------------------------------------- */
(function() {

  var isSupportedByBrowser = false;
  if (typeof navigator != "undefined" &&
      navigator.bluetooth) {
    if (navigator.bluetooth.getAvailability)
      navigator.bluetooth.getAvailability().then(x=>isSupportedByBrowser=x);
    else
     isSupportedByBrowser=true;
  }

  /**
   * @param {boolean} ignoreSettings 
   * @returns {{warning?: string, error?: string} | boolean}
   */
  function getStatus(ignoreSettings) {
    /* If BLE is handled some other way (eg noble), then it can be disabled here */
    if (Espruino.Core.Serial.NO_WEB_BLUETOOTH) {
      OK = false;
      return {warning:`Disabled by another Serial service in Web IDE (Serial.NO_WEB_BLUETOOTH)`};
    }
    if (typeof navigator == "undefined") {
      return {warning:"Not running in a browser"};
    }
    if (!navigator.bluetooth) {
      if (Espruino.Core.Utils.isAppleDevice())
        return {error:`Safari on iOS has no Web Bluetooth support. You need <a href="https://itunes.apple.com/us/app/webble/id1193531073" target="_blank">to use the WebBLE app</a>`};
      else if (Espruino.Core.Utils.isChrome() && Espruino.Core.Utils.isLinux())
        return {error:`Chrome on Linux requires <code>chrome://flags/#enable-experimental-web-platform-features</code> to be enabled.`};
      else if (Espruino.Core.Utils.isFirefox())
        return {error:`Firefox doesn't support Web Bluetooth - try using Chrome`};
      else
        return {error:"No navigator.bluetooth. Do you have a supported browser?"};
    }
    if (navigator.bluetooth.requestDevice &&
        navigator.bluetooth.requestDevice.toString().indexOf('callExtension') >= 0) {
      status("info","Using Urish's Windows 10 Web Bluetooth Polyfill");
    } else if (navigator.platform.indexOf("Win")>=0 &&
        (navigator.userAgent.indexOf("Chrome/")>=0)) {
      var chromeVer = navigator.userAgent.match(/Chrome\/(\d+)/);
      if (chromeVer && chromeVer[1]<68) {
        return {error:"Web Bluetooth available, but Windows Web Bluetooth is broken in <68"};
      }
    }
    if (window && window.location && window.location.protocol=="http:" &&
        window.location.hostname!="localhost") {
      return {error:"Serving off HTTP (not HTTPS)"};
    }
    if (!isSupportedByBrowser) {
      return {error:"Web Bluetooth API available, but not supported by this Browser"};
    }
    if (!ignoreSettings && !Espruino.Config.WEB_BLUETOOTH)
      return {warning:`"Web Bluetooth" disabled in settings`};
    return true;
  }

  var OK = true;
  var NORDIC_SERVICE = "6e400001-b5a3-f393-e0a9-e50e24dcca9e";
  var NORDIC_TX = "6e400002-b5a3-f393-e0a9-e50e24dcca9e";
  var NORDIC_RX = "6e400003-b5a3-f393-e0a9-e50e24dcca9e";
  var NORDIC_DEFAULT_TX_LENGTH = 20; ///< default value for maxPacketLength
  var testedCompatibility = false;
  /// List of previously paired devices that we could reconnect to without the chooser
  var pairedDevices = [];

  var btServer = undefined;
  var connectionDisconnectCallback;

  var txCharacteristic;
  var rxCharacteristic;
  var maxPacketLength; ///< packet length (MTU-3) for the currently active connection
  var txInProgress = false;

  function init() {
    Espruino.Core.Config.add("WEB_BLUETOOTH", {
      section : "Communications",
      name : "Connect over Bluetooth LE (Web Bluetooth)",
      descriptionHTML : 'Allow connection to Espruino via BLE with the Nordic UART implementation',
      type : "boolean",
      defaultValue : true,
    });
    Espruino.Core.Config.add("WEB_BLUETOOTH_FILTER", {
      section : "Communications",
      name : "Bluetooth LE (Web Bluetooth) Filter",
      descriptionHTML : 'If non-empty, only Bluetooth devices with names that start with this value will be shown in the Web Bluetooth device list (otherwise any supported device is shown). For example entering <code>Puck.js</code> will return only Puck.js devices.',
      type : "string",
      defaultValue : "",
    });
    // If we're ok and have the getDevices extension, use it to remember previously paired devices
    if (getStatus(true)===true && navigator.bluetooth.getDevices) {
      console.log("BT> bluetooth.getDevices exists - grab known devices");
      navigator.bluetooth.getDevices().then(devices=>{
        pairedDevices = devices;
      });
    }
  }

  function getPorts(callback) {
    if (!testedCompatibility) {
      testedCompatibility = true;
      /* Check compatibility here - the Web Bluetooth Polyfill for windows
      loads after everything else, so we can't check when this page is
      parsed.*/
      if (getStatus(true)!==true)
        OK = false;
    }
    if (Espruino.Config.WEB_BLUETOOTH && OK) {
      var list = [{path:'Web Bluetooth', description:'Bluetooth Low Energy', type : "bluetooth", promptsUser:true}];
      pairedDevices.forEach(function(btDevice) {
        list.push({path:btDevice.name, description:'Web Bluetooth device', type : "bluetooth"});
      });
      callback(list, true/*instantPorts*/);
    } else
      callback(undefined, true/*instantPorts*/);
  }

  function setMaxPacketLength(n) {
    maxPacketLength = n;
    SerialDevice.maxWriteLength = n;
  }

  function openSerial(serialPort, openCallback, receiveCallback, disconnectCallback) {
    connectionDisconnectCallback = disconnectCallback;

    var btDevice;
    var btService;
    var promise;
    // Check for pre-paired devices
    btDevice = pairedDevices.find(dev=>dev.name == serialPort);
    if (btDevice) {
      console.log("BT> Pre-paired Web Bluetooth device already found");
      promise = Promise.resolve(btDevice);
    } else {
      var filters = [];
      if (Espruino.Config.WEB_BLUETOOTH_FILTER && Espruino.Config.WEB_BLUETOOTH_FILTER.trim().length) {
        filters.push({ namePrefix: Espruino.Config.WEB_BLUETOOTH_FILTER.trim() });
      } else {
        Espruino.Core.Utils.recognisedBluetoothDevices().forEach(function(namePrefix) {
          filters.push({ namePrefix: namePrefix });
        });
        filters.push({ services: [ NORDIC_SERVICE ] });
      }
      console.log("BT> Starting device chooser");
      promise = navigator.bluetooth.requestDevice({
          filters: filters,
          optionalServices: [ NORDIC_SERVICE ]});
    }
    promise.then(function(device) {
      btDevice = device;
      Espruino.Core.Status.setStatus("Connecting to "+btDevice.name);
      console.log('BT>  Device Name:       ' + btDevice.name);
      console.log('BT>  Device ID:         ' + btDevice.id);
      // Was deprecated: Should use getPrimaryServices for this in future
      //console.log('BT>  Device UUIDs:      ' + device.uuids.join('\n' + ' '.repeat(21)));
      btDevice.addEventListener('gattserverdisconnected', function() {
        console.log("BT> Disconnected (gattserverdisconnected)");
        closeSerial();
      }, {once:true});
      return btDevice.gatt.connect();
    }).then(function(server) {
      Espruino.Core.Status.setStatus("Connected to BLE");
      console.log("BT> Connected");
      btServer = server;
      return server.getPrimaryService(NORDIC_SERVICE);
    }).then(function(service) {
      Espruino.Core.Status.setStatus("Configuring BLE...");
      console.log("BT> Got service");
      btService = service;
      return btService.getCharacteristic(NORDIC_RX);
    }).then(function (characteristic) {
      Espruino.Core.Status.setStatus("Configuring BLE....");
      rxCharacteristic = characteristic;
      setMaxPacketLength(NORDIC_DEFAULT_TX_LENGTH); // set default packet length
      console.log("BT> RX characteristic:"+JSON.stringify(rxCharacteristic));
      rxCharacteristic.addEventListener('characteristicvaluechanged', function(event) {
        // In Chrome 50+, a DataView is returned instead of an ArrayBuffer.
        var value = event.target.value.buffer;
        if (value.byteLength > maxPacketLength) {
          console.log("BT> Received packet of length "+value.byteLength+" - assuming increased MTU");
          setMaxPacketLength(value.byteLength);
        }
        //console.log("BT> RX:"+JSON.stringify(Espruino.Core.Utils.arrayBufferToString(value)));
        receiveCallback(value);
      });
      return rxCharacteristic.startNotifications();
    }).then(function() {
      Espruino.Core.Status.setStatus("Configuring BLE....");
      return btService.getCharacteristic(NORDIC_TX);
    }).then(function (characteristic) {
      Espruino.Core.Status.setStatus("Configuring BLE.....");
      txCharacteristic = characteristic;
      console.log("BT> TX characteristic:"+JSON.stringify(txCharacteristic));
    }).then(function() {
      Espruino.Core.Status.setStatus("Configuring BLE.....");
      txInProgress = false;
      Espruino.Core.Serial.setSlowWrite(false, true); // hack - leave throttling up to this implementation
      if (!pairedDevices.includes(btDevice))
        pairedDevices.push(btDevice);
      setTimeout(function() {
        Espruino.Core.Status.setStatus("BLE configured. Receiving data...");
        openCallback({ portName : btDevice.name });
      }, 500);
    }).catch(function(error) {
      console.log('BT> ERROR: ' + error);
      closeSerial({error:error.toString()});
    });
  }

  function closeSerial(err) {
    if (btServer) {
      btServer.disconnect();
      btServer = undefined;
      txCharacteristic = undefined;
      rxCharacteristic = undefined;
      setMaxPacketLength(NORDIC_DEFAULT_TX_LENGTH); // set default
    }
    if (connectionDisconnectCallback) {
      connectionDisconnectCallback(err);
      connectionDisconnectCallback = undefined;
    }
  }

  // Throttled serial write
  function writeSerial(data, callback) {
    if (!txCharacteristic) return;

    if (data.length>maxPacketLength) {
      console.error("BT> TX length >"+maxPacketLength);
      return callback();
    }
    if (txInProgress) {
      console.error("BT> already sending!");
      return callback();
    }

    txInProgress = true;
    txCharacteristic.writeValue(Espruino.Core.Utils.stringToArrayBuffer(data)).then(function() {
      txInProgress = false;
      callback();
    }).catch(function(error) {
     console.log('BT> SEND ERROR: ' + error);
     closeSerial();
    });
  }

  // ----------------------------------------------------------
  var SerialDevice = {
    "name" : "Web Bluetooth",
    "init" : init,
    "getStatus": getStatus,
    "getPorts": getPorts,
    "open": openSerial,
    "write": writeSerial,
    "close": closeSerial,
    "maxWriteLength" : maxPacketLength,
  };
  Espruino.Core.Serial.devices.push(SerialDevice);
})();
/* --------------------------------------------------------------
         EspruinoTools/core/serial_web_serial.js
   -------------------------------------------------------------- */
(function() {

  // TODO: Pass USB vendor and product ID filter when supported by Chrome.
  //       - maybe not? We might want to connect to a non-official Espruino board
  // TODO: Use device name when/if supported

  function getStatus(ignoreSettings) {
    if (typeof navigator == "undefined") {
      return {warning:"Not running in a browser"};
    }
    if (getPortsErrorMessage!==undefined) {
      return {error:getPortsErrorMessage};
    }
    if (!navigator.serial) {
      if (Espruino.Core.Utils.isChrome())
        return {error:`Chrome currently requires <code>chrome://flags/#enable-experimental-web-platform-features</code> to be enabled.`};
      else if (Espruino.Core.Utils.isFirefox())
        return {error:`Firefox doesn't support Web Serial - try using Chrome`};
      else
        return {error:"No navigator.serial. Do you have a supported browser?"};
    }
    if (window && window.location && window.location.protocol=="http:" &&
        window.location.hostname!="localhost") {
      return {error:"Serving off HTTP (not HTTPS)"};
    }
    if (!ignoreSettings && !Espruino.Config.WEB_SERIAL)
      return {warning:`"Web Serial" disabled in settings`};
    return true;
  }

  var OK = true;
  var getPortsErrorMessage = undefined;
  var testedCompatibility = false;
  /// List of previously paired devices that we could reconnect to without the chooser
  var pairedDevices = [];

  var serialPort;
  var serialPortReader;

  function init() {
    Espruino.Core.Config.add("WEB_SERIAL", {
      section : "Communications",
      name : "Connect over Serial (Web Serial)",
      descriptionHTML : 'Allow connection to Espruino from the Web Browser via Serial. The API must currently be enabled by pasting <code>chrome://flags#enable-experimental-web-platform-features</code> into the address bar and clicking <code>Enable</code>',
      type : "boolean",
      defaultValue : true,
    });
    // If we're ok and have the getDevices extension, use it to remember previously paired devices
    if (getStatus(true)===true && navigator.serial.getPorts) {
      console.log("Serial> serial.getPorts exists - grab known devices");
      navigator.serial.getPorts().then(devices=>{
        pairedDevices = devices;
      }, err=>{
        getPortsErrorMessage = err.toString();
        console.log("Serial> "+err.toString());
      });
    }
  }

  function getSerialDeviceInfo(device) {
    var idx = pairedDevices.indexOf(device);
    var deviceInfo = { path : "webserial:"+(idx>=0?idx:""), type : "usb", description : "Previously connected device"};
    if (device.getInfo) {
      var info = device.getInfo();
      if (info.usbVendorId && info.usbProductId) {
        deviceInfo.path = "webserial:"+(63356+info.usbVendorId).toString(16).substr(-4)+":"+(63356+info.usbProductId).toString(16).substr(-4);
      }
    }
    return deviceInfo;
  }

  function getPorts(callback) {
    if (!testedCompatibility) {
      testedCompatibility = true;
      if (getStatus(true)!==true)
        OK = false;
    }
    if (Espruino.Config.WEB_SERIAL && OK) {
      var list = [{path:'Web Serial', description:'Serial', type : "serial", promptsUser:true}];
      pairedDevices.forEach(function(dev) {
        list.push(getSerialDeviceInfo(dev));
      });
      callback(list, true/*instantPorts*/);
    } else
      callback(undefined, true/*instantPorts*/);
  }

  function openSerial(path, openCallback, receiveCallback, disconnectCallback) {
    var promise;
    // Check for pre-paired devices
    serialPort = pairedDevices.find(dev=>getSerialDeviceInfo(dev).path == path);
    if (serialPort) {
      console.log("Serial> Pre-paired Web Serial device already found");
      promise = Promise.resolve(serialPort);
    } else {
      console.log("Serial> Starting device chooser");
      promise = navigator.serial.requestPort({});
    }
    promise.then(function(port) {
      Espruino.Core.Status.setStatus("Connecting to serial port");
      serialPort = port;
      var br = parseInt(Espruino.Config.BAUD_RATE);
      return port.open({
        baudrate: br/*old*/,
        baudRate: br/*new*/,
        dataBits: 8, databits: 8,
        stopBits: 1, stopbits: 8,
        parity: "none",
        flowControl: "none",
        rtscts: false });
    }).then(function () {
      var getReaderSuccess = false;
      function readLoop() {
        serialPortReader = serialPort.readable.getReader();
        serialPortReader.read().then(function ({ value, done }) {
          getReaderSuccess = true;
          serialPortReader.releaseLock();
          serialPortReader = undefined;
          if (value) {
            receiveCallback(value.buffer);
          }
          if (done) {
            console.log("Serial> serialPortReader done");
            if (serialPort) {
              console.log("Serial> serialPort.close()");
              serialPort.close();
              serialPort = undefined;
              if (disconnectCallback) disconnectCallback();
              disconnectCallback = undefined;
            }
          } else {
            readLoop();
          }
        }).catch(function(e) {
          if (getReaderSuccess == false && e == "BreakError: Break received") {
            // This fixes a longstanding issue (since 2017) that affected ESP32 devices.
            // Espruino Web IDE, sometimes did not connect to an ESP32 device, especially the first time you tried. 
            // The workaround was to use another tool to connect to the ESP32, like minicom or cutecom
            // and once connected using one of these tools, you tried again using Espruino Web IDE.
            console.log("Condition break received and ignored");
            console.log("Retrying the read loop...");
            getReaderSuccess = true;
            readLoop();
          } else {
            serialPortReader.releaseLock();
            console.log("Serial> serialPortReader rejected", e);
          }
        });
      }
      serialPort.addEventListener("disconnect", (event) => {
        console.log("Serial> Port disconnected", event);
        if (serialPort) {
          serialPort.close();
          serialPort = undefined;
        }
        if (disconnectCallback) disconnectCallback();
        disconnectCallback = undefined;
      });
      readLoop();
      Espruino.Core.Status.setStatus("Serial connected. Receiving data...");
      if (!pairedDevices.includes(serialPort))
        pairedDevices.push(serialPort);

      openCallback({ portName : getSerialDeviceInfo(serialPort).path });
    }).catch(function(error) {
      console.log('Serial> ERROR: ' + error);
      pairedDevices = pairedDevices.filter(dev=>getSerialDeviceInfo(dev).path != path); // error connecting, remove from paired devices
      if (disconnectCallback) disconnectCallback();
      disconnectCallback = undefined;
    });
  }

  function closeSerial() {
    if (serialPortReader)
      serialPortReader.cancel();
    /* serialPortReader will handle tidying up
    and calling disconnect */
  }

  function writeSerial(data, callback) {
    var writer = serialPort.writable.getWriter();
    writer.write(Espruino.Core.Utils.stringToArrayBuffer(data)).then(function() {
      writer.releaseLock();
      callback();
    }).catch(function(error) {
      writer.releaseLock();
      console.log('Serial> SEND ERROR: ' + error);
      closeSerial();
    });
  }

  // ----------------------------------------------------------

  Espruino.Core.Serial.devices.push({
    "name" : "Web Serial",
    "init" : init,
    "getStatus": getStatus,
    "getPorts": getPorts,
    "open": openSerial,
    "write": writeSerial,
    "close": closeSerial,
  });
})();
/* --------------------------------------------------------------
         EspruinoTools/core/serial_frame.js
   -------------------------------------------------------------- */
/*
Gordon Williams (gw@pur3.co.uk)

If we're running in an iframe, this gets enabled and allows the IDE
to work by passing messages using window.postMessage.

Use embed.js on the client side to link this in.
*/

(function() {
  if (typeof navigator == "undefined" || typeof window == "undefined") {
    console.log("serial_frame: Not running in a browser");
    return;
  }
  if ((typeof window.parent == "undefined") ||
      window.parent === window) {
    console.log("serial_frame: Not running inside an iframe");
    return;
  }

  var ERROR = "No 'init' message received";

  function getStatus(ignoreSettings) {
    if (ERROR)
      return {error:ERROR};
    return true;
  }

  var callbacks = {
    connected : undefined,
    receive : undefined,
    written : undefined,
    disconnected : undefined,
    ports : undefined
  };

  window.addEventListener('message', function(e) {
    var event = e.data;
    //console.log("IDE MESSAGE ---------------------------------------");
    //console.log(event);
    //console.log("-----------------------------------------------");
    if (typeof event!="object" || event.for!="ide") return;
    switch (event.type) {
      case "initialised": {
        ERROR = false;
      } break;
      case "ports": if (callbacks.ports) {
        callbacks.ports(event.data);
        callbacks.ports = undefined;
      } break;
      case "connect":
        if (Espruino.Core.Serial.isConnected())
          console.error("serial_frame: already connected");

        Espruino.Core.MenuPortSelector.connectToPort(event.data, function() {
          console.log("serial_frame: connected");
        });
        break;
      case "connected": if (callbacks.connected) {
        callbacks.connected({ok:true});
        callbacks.connected = undefined;
      } break;
      case "disconnected": if (callbacks.disconnected) {
        callbacks.disconnected();
        callbacks.disconnected = undefined;
      } break;
      case "written": if (callbacks.written) {
        callbacks.written();
        callbacks.written = undefined;
      } break;
      case "receive": if (callbacks.receive) {
        if (typeof event.data!="string")
          console.error("serial_frame: receive event expecting data string");
        callbacks.receive(Espruino.Core.Utils.stringToArrayBuffer(event.data));
      } break;
      case "setMaxWriteLength": {
        // Set the maximum amount of data we're allowed to write in one go
        device.maxWriteLength = parseInt(event.data);
      } break;
      default:
        console.error("Unknown event type ",event.type);
        break;
    }
  });

  function post(msg) {
    msg.from="ide";
    window.parent.postMessage(msg,"*");
  }

  var device = {
    "name" : "Embedded IDE",
    "init" : function() {
      post({type:"init"});
    },
    getStatus : getStatus,
    "getPorts": function(callback) {
      if (ERROR !== false) {
        callback([], true/*instantPorts*/);
        return;
      }
      post({type:"getPorts"});
      var timeout = setTimeout(function() {
        timeout = undefined;
        callbacks.ports = undefined;
        callback([], false/*instantPorts*/);
        ERROR = "getPorts timeout, disabling";
        console.error("serial_frame: "+ERROR);
      },100);
      callbacks.ports = function(d) {
        if (!timeout) {
          console.error("serial_frame: ports received after timeout");
          return;
        }
        clearTimeout(timeout);
        timeout = undefined;
        callback(d, false/*instantPorts*/);
      };
    },
    "open": function(path, openCallback, receiveCallback, disconnectCallback) {
      callbacks.connected = openCallback;
      callbacks.receive = receiveCallback;
      callbacks.disconnected = disconnectCallback;
      post({type:"connect",data:path});
    },
    "write": function(d, callback) {
      callbacks.written = callback;
      post({type:"write",data:d});
    },
    "close": function() {
      post({type:"disconnect"});
    },
  };
  Espruino.Core.Serial.devices.push(device);
})();
/* --------------------------------------------------------------
         js/libs/peerjs.min.js
   -------------------------------------------------------------- */
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Event("track");o.track=n,o.receiver=i,o.transceiver={receiver:i},o.streams=[r.stream],e.dispatchEvent(o)})},this.addEventListener("addstream",this._ontrackpoly)),r.apply(this,arguments)}}}function p(e){if("object"===s(e)&&e.RTCPeerConnection&&!("getSenders"in e.RTCPeerConnection.prototype)&&"createDTMFSender"in e.RTCPeerConnection.prototype){var t=function(e,t){return{track:t,get dtmf(){return void 0===this._dtmf&&("audio"===t.kind?this._dtmf=e.createDTMFSender(t):this._dtmf=null),this._dtmf},_pc:e}};if(!e.RTCPeerConnection.prototype.getSenders){e.RTCPeerConnection.prototype.getSenders=function(){return this._senders=this._senders||[],this._senders.slice()};var r=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addTrack=function(e,n){var i=r.apply(this,arguments);return i||(i=t(this,e),this._senders.push(i)),i};var n=e.RTCPeerConnection.prototype.removeTrack;e.RTCPeerConnection.prototype.removeTrack=function(e){n.apply(this,arguments);var t=this._senders.indexOf(e);-1!==t&&this._senders.splice(t,1)}}var i=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(e){var r=this;this._senders=this._senders||[],i.apply(this,[e]),e.getTracks().forEach(function(e){r._senders.push(t(r,e))})};var o=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){var t=this;this._senders=this._senders||[],o.apply(this,[e]),e.getTracks().forEach(function(e){var r=t._senders.find(function(t){return t.track===e});r&&t._senders.splice(t._senders.indexOf(r),1)})}}else if("object"===s(e)&&e.RTCPeerConnection&&"getSenders"in e.RTCPeerConnection.prototype&&"createDTMFSender"in e.RTCPeerConnection.prototype&&e.RTCRtpSender&&!("dtmf"in e.RTCRtpSender.prototype)){var a=e.RTCPeerConnection.prototype.getSenders;e.RTCPeerConnection.prototype.getSenders=function(){var e=this,t=a.apply(this,[]);return t.forEach(function(t){return t._pc=e}),t},Object.defineProperty(e.RTCRtpSender.prototype,"dtmf",{get:function(){return void 0===this._dtmf&&("audio"===this.track.kind?this._dtmf=this._pc.createDTMFSender(this.track):this._dtmf=null),this._dtmf}})}}function d(e){if(e.RTCPeerConnection){var t=e.RTCPeerConnection.prototype.getStats;e.RTCPeerConnection.prototype.getStats=function(){var e=this,[r,n,i]=arguments;if(arguments.length>0&&"function"==typeof r)return t.apply(this,arguments);if(0===t.length&&(0===arguments.length||"function"!=typeof r))return t.apply(this,[]);var o=function(e){var t={};return e.result().forEach(function(e){var r={id:e.id,timestamp:e.timestamp,type:{localcandidate:"local-candidate",remotecandidate:"remote-candidate"}[e.type]||e.type};e.names().forEach(function(t){r[t]=e.stat(t)}),t[r.id]=r}),t},s=function(e){return new Map(Object.keys(e).map(function(t){return[t,e[t]]}))};if(arguments.length>=2){return t.apply(this,[function(e){n(s(o(e)))},r])}return new Promise(function(r,n){t.apply(e,[function(e){r(s(o(e)))},n])}).then(n,i)}}}function h(t){if("object"===s(t)&&t.RTCPeerConnection&&t.RTCRtpSender&&t.RTCRtpReceiver){if(!("getStats"in t.RTCRtpSender.prototype)){var r=t.RTCPeerConnection.prototype.getSenders;r&&(t.RTCPeerConnection.prototype.getSenders=function(){var e=this,t=r.apply(this,[]);return t.forEach(function(t){return t._pc=e}),t});var n=t.RTCPeerConnection.prototype.addTrack;n&&(t.RTCPeerConnection.prototype.addTrack=function(){var e=n.apply(this,arguments);return e._pc=this,e}),t.RTCRtpSender.prototype.getStats=function(){var t=this;return this._pc.getStats().then(function(r){return e.filterStats(r,t.track,!0)})}}if(!("getStats"in t.RTCRtpReceiver.prototype)){var i=t.RTCPeerConnection.prototype.getReceivers;i&&(t.RTCPeerConnection.prototype.getReceivers=function(){var e=this,t=i.apply(this,[]);return t.forEach(function(t){return t._pc=e}),t}),e.wrapPeerConnectionEvent(t,"track",function(e){return e.receiver._pc=e.srcElement,e}),t.RTCRtpReceiver.prototype.getStats=function(){var t=this;return this._pc.getStats().then(function(r){return e.filterStats(r,t.track,!1)})}}if("getStats"in t.RTCRtpSender.prototype&&"getStats"in t.RTCRtpReceiver.prototype){var o=t.RTCPeerConnection.prototype.getStats;t.RTCPeerConnection.prototype.getStats=function(){if(arguments.length>0&&arguments[0]instanceof t.MediaStreamTrack){var e,r,n,i=arguments[0];return this.getSenders().forEach(function(t){t.track===i&&(e?n=!0:e=t)}),this.getReceivers().forEach(function(e){return e.track===i&&(r?n=!0:r=e),e.track===i}),n||e&&r?Promise.reject(new DOMException("There are more than one sender or receiver for the track.","InvalidAccessError")):e?e.getStats():r?r.getStats():Promise.reject(new DOMException("There is no sender or receiver for the track.","InvalidAccessError"))}return o.apply(this,arguments)}}}}function f(e){e.RTCPeerConnection.prototype.getLocalStreams=function(){var e=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},Object.keys(this._shimmedLocalStreams).map(function(t){return e._shimmedLocalStreams[t][0]})};var t=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addTrack=function(e,r){if(!r)return t.apply(this,arguments);this._shimmedLocalStreams=this._shimmedLocalStreams||{};var n=t.apply(this,arguments);return this._shimmedLocalStreams[r.id]?-1===this._shimmedLocalStreams[r.id].indexOf(n)&&this._shimmedLocalStreams[r.id].push(n):this._shimmedLocalStreams[r.id]=[r,n],n};var r=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(e){var t=this;this._shimmedLocalStreams=this._shimmedLocalStreams||{},e.getTracks().forEach(function(e){if(t.getSenders().find(function(t){return t.track===e}))throw new DOMException("Track already exists.","InvalidAccessError")});var n=this.getSenders();r.apply(this,arguments);var i=this.getSenders().filter(function(e){return-1===n.indexOf(e)});this._shimmedLocalStreams[e.id]=[e].concat(i)};var n=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){return this._shimmedLocalStreams=this._shimmedLocalStreams||{},delete this._shimmedLocalStreams[e.id],n.apply(this,arguments)};var i=e.RTCPeerConnection.prototype.removeTrack;e.RTCPeerConnection.prototype.removeTrack=function(e){var t=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},e&&Object.keys(this._shimmedLocalStreams).forEach(function(r){var n=t._shimmedLocalStreams[r].indexOf(e);-1!==n&&t._shimmedLocalStreams[r].splice(n,1),1===t._shimmedLocalStreams[r].length&&delete t._shimmedLocalStreams[r]}),i.apply(this,arguments)}}function m(e,t){if(e.RTCPeerConnection){if(e.RTCPeerConnection.prototype.addTrack&&t.version>=65)return f(e);var r=e.RTCPeerConnection.prototype.getLocalStreams;e.RTCPeerConnection.prototype.getLocalStreams=function(){var e=this,t=r.apply(this);return this._reverseStreams=this._reverseStreams||{},t.map(function(t){return e._reverseStreams[t.id]})};var n=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(t){var r=this;if(this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},t.getTracks().forEach(function(e){if(r.getSenders().find(function(t){return t.track===e}))throw new DOMException("Track already exists.","InvalidAccessError")}),!this._reverseStreams[t.id]){var i=new e.MediaStream(t.getTracks());this._streams[t.id]=i,this._reverseStreams[i.id]=t,t=i}n.apply(this,[t])};var i=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},i.apply(this,[this._streams[e.id]||e]),delete this._reverseStreams[this._streams[e.id]?this._streams[e.id].id:e.id],delete this._streams[e.id]},e.RTCPeerConnection.prototype.addTrack=function(t,r){var n=this;if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");var i=[].slice.call(arguments,1);if(1!==i.length||!i[0].getTracks().find(function(e){return e===t}))throw new DOMException("The adapter.js addTrack polyfill only supports a single  stream which is associated with the specified track.","NotSupportedError");if(this.getSenders().find(function(e){return e.track===t}))throw new DOMException("Track already exists.","InvalidAccessError");this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{};var o=this._streams[r.id];if(o)o.addTrack(t),Promise.resolve().then(function(){n.dispatchEvent(new Event("negotiationneeded"))});else{var s=new e.MediaStream([t]);this._streams[r.id]=s,this._reverseStreams[s.id]=r,this.addStream(s)}return this.getSenders().find(function(e){return e.track===t})},["createOffer","createAnswer"].forEach(function(t){var r=e.RTCPeerConnection.prototype[t],n=o({},t,function(){var e=this,t=arguments;return arguments.length&&"function"==typeof arguments[0]?r.apply(this,[function(r){var n=c(e,r);t[0].apply(null,[n])},function(e){t[1]&&t[1].apply(null,e)},arguments[2]]):r.apply(this,arguments).then(function(t){return c(e,t)})});e.RTCPeerConnection.prototype[t]=n[t]});var s=e.RTCPeerConnection.prototype.setLocalDescription;e.RTCPeerConnection.prototype.setLocalDescription=function(){return arguments.length&&arguments[0].type?(arguments[0]=(e=this,t=arguments[0],r=t.sdp,Object.keys(e._reverseStreams||[]).forEach(function(t){var n=e._reverseStreams[t],i=e._streams[n.id];r=r.replace(new RegExp(n.id,"g"),i.id)}),new RTCSessionDescription({type:t.type,sdp:r})),s.apply(this,arguments)):s.apply(this,arguments);var e,t,r};var a=Object.getOwnPropertyDescriptor(e.RTCPeerConnection.prototype,"localDescription");Object.defineProperty(e.RTCPeerConnection.prototype,"localDescription",{get:function(){var e=a.get.apply(this);return""===e.type?e:c(this,e)}}),e.RTCPeerConnection.prototype.removeTrack=function(e){var t,r=this;if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");if(!e._pc)throw new DOMException("Argument 1 of RTCPeerConnection.removeTrack does not implement interface RTCRtpSender.","TypeError");if(!(e._pc===this))throw new DOMException("Sender was not created by this connection.","InvalidAccessError");this._streams=this._streams||{},Object.keys(this._streams).forEach(function(n){r._streams[n].getTracks().find(function(t){return e.track===t})&&(t=r._streams[n])}),t&&(1===t.getTracks().length?this.removeStream(this._reverseStreams[t.id]):t.removeTrack(e.track),this.dispatchEvent(new Event("negotiationneeded")))}}function c(e,t){var r=t.sdp;return Object.keys(e._reverseStreams||[]).forEach(function(t){var n=e._reverseStreams[t],i=e._streams[n.id];r=r.replace(new RegExp(i.id,"g"),n.id)}),new RTCSessionDescription({type:t.type,sdp:r})}}function u(e,t){!e.RTCPeerConnection&&e.webkitRTCPeerConnection&&(e.RTCPeerConnection=e.webkitRTCPeerConnection),e.RTCPeerConnection&&t.version<53&&["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(t){var r=e.RTCPeerConnection.prototype[t],n=o({},t,function(){return arguments[0]=new("addIceCandidate"===t?e.RTCIceCandidate:e.RTCSessionDescription)(arguments[0]),r.apply(this,arguments)});e.RTCPeerConnection.prototype[t]=n[t]})}function l(t,r){e.wrapPeerConnectionEvent(t,"negotiationneeded",function(e){var t=e.target;if(!(r.version<72||t.getConfiguration&&"plan-b"===t.getConfiguration().sdpSemantics)||"stable"===t.signalingState)return e})}
},{"../utils.js":"iSxC","./getusermedia":"s6SN","./getdisplaymedia":"VHa8"}],"NZ1C":[function(require,module,exports) {
"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.filterIceServers=n;var r=t(require("../utils"));function e(){if("function"!=typeof WeakMap)return null;var r=new WeakMap;return e=function(){return r},r}function t(r){if(r&&r.__esModule)return r;if(null===r||"object"!=typeof r&&"function"!=typeof r)return{default:r};var t=e();if(t&&t.has(r))return t.get(r);var n={},u=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(var i in r)if(Object.prototype.hasOwnProperty.call(r,i)){var f=u?Object.getOwnPropertyDescriptor(r,i):null;f&&(f.get||f.set)?Object.defineProperty(n,i,f):n[i]=r[i]}return n.default=r,t&&t.set(r,n),n}function n(e,t){var n=!1;return(e=JSON.parse(JSON.stringify(e))).filter(function(e){if(e&&(e.urls||e.url)){var t=e.urls||e.url;e.url&&!e.urls&&r.deprecated("RTCIceServer.url","RTCIceServer.urls");var u="string"==typeof t;return u&&(t=[t]),t=t.filter(function(r){if(0===r.indexOf("stun:"))return!1;var e=r.startsWith("turn")&&!r.startsWith("turn:[")&&r.includes("transport=udp");return e&&!n?(n=!0,!0):e&&!n}),delete e.url,e.urls=u?t[0]:t,!!t.length}})}
},{"../utils":"iSxC"}],"YHvh":[function(require,module,exports) {
"use strict";var r={generateIdentifier:function(){return Math.random().toString(36).substr(2,10)}};r.localCName=r.generateIdentifier(),r.splitLines=function(r){return r.trim().split("\n").map(function(r){return r.trim()})},r.splitSections=function(r){return r.split("\nm=").map(function(r,e){return(e>0?"m="+r:r).trim()+"\r\n"})},r.getDescription=function(e){var t=r.splitSections(e);return t&&t[0]},r.getMediaSections=function(e){var t=r.splitSections(e);return t.shift(),t},r.matchPrefix=function(e,t){return r.splitLines(e).filter(function(r){return 0===r.indexOf(t)})},r.parseCandidate=function(r){for(var e,t={foundation:(e=0===r.indexOf("a=candidate:")?r.substring(12).split(" "):r.substring(10).split(" "))[0],component:parseInt(e[1],10),protocol:e[2].toLowerCase(),priority:parseInt(e[3],10),ip:e[4],address:e[4],port:parseInt(e[5],10),type:e[7]},a=8;a<e.length;a+=2)switch(e[a]){case"raddr":t.relatedAddress=e[a+1];break;case"rport":t.relatedPort=parseInt(e[a+1],10);break;case"tcptype":t.tcpType=e[a+1];break;case"ufrag":t.ufrag=e[a+1],t.usernameFragment=e[a+1];break;default:t[e[a]]=e[a+1]}return t},r.writeCandidate=function(r){var e=[];e.push(r.foundation),e.push(r.component),e.push(r.protocol.toUpperCase()),e.push(r.priority),e.push(r.address||r.ip),e.push(r.port);var t=r.type;return e.push("typ"),e.push(t),"host"!==t&&r.relatedAddress&&r.relatedPort&&(e.push("raddr"),e.push(r.relatedAddress),e.push("rport"),e.push(r.relatedPort)),r.tcpType&&"tcp"===r.protocol.toLowerCase()&&(e.push("tcptype"),e.push(r.tcpType)),(r.usernameFragment||r.ufrag)&&(e.push("ufrag"),e.push(r.usernameFragment||r.ufrag)),"candidate:"+e.join(" ")},r.parseIceOptions=function(r){return r.substr(14).split(" ")},r.parseRtpMap=function(r){var e=r.substr(9).split(" "),t={payloadType:parseInt(e.shift(),10)};return e=e[0].split("/"),t.name=e[0],t.clockRate=parseInt(e[1],10),t.channels=3===e.length?parseInt(e[2],10):1,t.numChannels=t.channels,t},r.writeRtpMap=function(r){var e=r.payloadType;void 0!==r.preferredPayloadType&&(e=r.preferredPayloadType);var t=r.channels||r.numChannels||1;return"a=rtpmap:"+e+" "+r.name+"/"+r.clockRate+(1!==t?"/"+t:"")+"\r\n"},r.parseExtmap=function(r){var e=r.substr(9).split(" ");return{id:parseInt(e[0],10),direction:e[0].indexOf("/")>0?e[0].split("/")[1]:"sendrecv",uri:e[1]}},r.writeExtmap=function(r){return"a=extmap:"+(r.id||r.preferredId)+(r.direction&&"sendrecv"!==r.direction?"/"+r.direction:"")+" "+r.uri+"\r\n"},r.parseFmtp=function(r){for(var e,t={},a=r.substr(r.indexOf(" ")+1).split(";"),n=0;n<a.length;n++)t[(e=a[n].trim().split("="))[0].trim()]=e[1];return t},r.writeFmtp=function(r){var e="",t=r.payloadType;if(void 0!==r.preferredPayloadType&&(t=r.preferredPayloadType),r.parameters&&Object.keys(r.parameters).length){var a=[];Object.keys(r.parameters).forEach(function(e){r.parameters[e]?a.push(e+"="+r.parameters[e]):a.push(e)}),e+="a=fmtp:"+t+" "+a.join(";")+"\r\n"}return e},r.parseRtcpFb=function(r){var e=r.substr(r.indexOf(" ")+1).split(" ");return{type:e.shift(),parameter:e.join(" ")}},r.writeRtcpFb=function(r){var e="",t=r.payloadType;return void 0!==r.preferredPayloadType&&(t=r.preferredPayloadType),r.rtcpFeedback&&r.rtcpFeedback.length&&r.rtcpFeedback.forEach(function(r){e+="a=rtcp-fb:"+t+" "+r.type+(r.parameter&&r.parameter.length?" "+r.parameter:"")+"\r\n"}),e},r.parseSsrcMedia=function(r){var e=r.indexOf(" "),t={ssrc:parseInt(r.substr(7,e-7),10)},a=r.indexOf(":",e);return a>-1?(t.attribute=r.substr(e+1,a-e-1),t.value=r.substr(a+1)):t.attribute=r.substr(e+1),t},r.parseSsrcGroup=function(r){var e=r.substr(13).split(" ");return{semantics:e.shift(),ssrcs:e.map(function(r){return parseInt(r,10)})}},r.getMid=function(e){var t=r.matchPrefix(e,"a=mid:")[0];if(t)return t.substr(6)},r.parseFingerprint=function(r){var e=r.substr(14).split(" ");return{algorithm:e[0].toLowerCase(),value:e[1]}},r.getDtlsParameters=function(e,t){return{role:"auto",fingerprints:r.matchPrefix(e+t,"a=fingerprint:").map(r.parseFingerprint)}},r.writeDtlsParameters=function(r,e){var t="a=setup:"+e+"\r\n";return r.fingerprints.forEach(function(r){t+="a=fingerprint:"+r.algorithm+" "+r.value+"\r\n"}),t},r.parseCryptoLine=function(r){var e=r.substr(9).split(" ");return{tag:parseInt(e[0],10),cryptoSuite:e[1],keyParams:e[2],sessionParams:e.slice(3)}},r.writeCryptoLine=function(e){return"a=crypto:"+e.tag+" "+e.cryptoSuite+" "+("object"==typeof e.keyParams?r.writeCryptoKeyParams(e.keyParams):e.keyParams)+(e.sessionParams?" "+e.sessionParams.join(" "):"")+"\r\n"},r.parseCryptoKeyParams=function(r){if(0!==r.indexOf("inline:"))return null;var e=r.substr(7).split("|");return{keyMethod:"inline",keySalt:e[0],lifeTime:e[1],mkiValue:e[2]?e[2].split(":")[0]:void 0,mkiLength:e[2]?e[2].split(":")[1]:void 0}},r.writeCryptoKeyParams=function(r){return r.keyMethod+":"+r.keySalt+(r.lifeTime?"|"+r.lifeTime:"")+(r.mkiValue&&r.mkiLength?"|"+r.mkiValue+":"+r.mkiLength:"")},r.getCryptoParameters=function(e,t){return r.matchPrefix(e+t,"a=crypto:").map(r.parseCryptoLine)},r.getIceParameters=function(e,t){var a=r.matchPrefix(e+t,"a=ice-ufrag:")[0],n=r.matchPrefix(e+t,"a=ice-pwd:")[0];return a&&n?{usernameFragment:a.substr(12),password:n.substr(10)}:null},r.writeIceParameters=function(r){return"a=ice-ufrag:"+r.usernameFragment+"\r\na=ice-pwd:"+r.password+"\r\n"},r.parseRtpParameters=function(e){for(var t={codecs:[],headerExtensions:[],fecMechanisms:[],rtcp:[]},a=r.splitLines(e)[0].split(" "),n=3;n<a.length;n++){var s=a[n],i=r.matchPrefix(e,"a=rtpmap:"+s+" ")[0];if(i){var p=r.parseRtpMap(i),c=r.matchPrefix(e,"a=fmtp:"+s+" ");switch(p.parameters=c.length?r.parseFmtp(c[0]):{},p.rtcpFeedback=r.matchPrefix(e,"a=rtcp-fb:"+s+" ").map(r.parseRtcpFb),t.codecs.push(p),p.name.toUpperCase()){case"RED":case"ULPFEC":t.fecMechanisms.push(p.name.toUpperCase())}}}return r.matchPrefix(e,"a=extmap:").forEach(function(e){t.headerExtensions.push(r.parseExtmap(e))}),t},r.writeRtpDescription=function(e,t){var a="";a+="m="+e+" ",a+=t.codecs.length>0?"9":"0",a+=" UDP/TLS/RTP/SAVPF ",a+=t.codecs.map(function(r){return void 0!==r.preferredPayloadType?r.preferredPayloadType:r.payloadType}).join(" ")+"\r\n",a+="c=IN IP4 0.0.0.0\r\n",a+="a=rtcp:9 IN IP4 0.0.0.0\r\n",t.codecs.forEach(function(e){a+=r.writeRtpMap(e),a+=r.writeFmtp(e),a+=r.writeRtcpFb(e)});var n=0;return t.codecs.forEach(function(r){r.maxptime>n&&(n=r.maxptime)}),n>0&&(a+="a=maxptime:"+n+"\r\n"),a+="a=rtcp-mux\r\n",t.headerExtensions&&t.headerExtensions.forEach(function(e){a+=r.writeExtmap(e)}),a},r.parseRtpEncodingParameters=function(e){var t,a=[],n=r.parseRtpParameters(e),s=-1!==n.fecMechanisms.indexOf("RED"),i=-1!==n.fecMechanisms.indexOf("ULPFEC"),p=r.matchPrefix(e,"a=ssrc:").map(function(e){return r.parseSsrcMedia(e)}).filter(function(r){return"cname"===r.attribute}),c=p.length>0&&p[0].ssrc,o=r.matchPrefix(e,"a=ssrc-group:FID").map(function(r){return r.substr(17).split(" ").map(function(r){return parseInt(r,10)})});o.length>0&&o[0].length>1&&o[0][0]===c&&(t=o[0][1]),n.codecs.forEach(function(r){if("RTX"===r.name.toUpperCase()&&r.parameters.apt){var e={ssrc:c,codecPayloadType:parseInt(r.parameters.apt,10)};c&&t&&(e.rtx={ssrc:t}),a.push(e),s&&((e=JSON.parse(JSON.stringify(e))).fec={ssrc:c,mechanism:i?"red+ulpfec":"red"},a.push(e))}}),0===a.length&&c&&a.push({ssrc:c});var u=r.matchPrefix(e,"b=");return u.length&&(u=0===u[0].indexOf("b=TIAS:")?parseInt(u[0].substr(7),10):0===u[0].indexOf("b=AS:")?1e3*parseInt(u[0].substr(5),10)*.95-16e3:void 0,a.forEach(function(r){r.maxBitrate=u})),a},r.parseRtcpParameters=function(e){var t={},a=r.matchPrefix(e,"a=ssrc:").map(function(e){return r.parseSsrcMedia(e)}).filter(function(r){return"cname"===r.attribute})[0];a&&(t.cname=a.value,t.ssrc=a.ssrc);var n=r.matchPrefix(e,"a=rtcp-rsize");t.reducedSize=n.length>0,t.compound=0===n.length;var s=r.matchPrefix(e,"a=rtcp-mux");return t.mux=s.length>0,t},r.parseMsid=function(e){var t,a=r.matchPrefix(e,"a=msid:");if(1===a.length)return{stream:(t=a[0].substr(7).split(" "))[0],track:t[1]};var n=r.matchPrefix(e,"a=ssrc:").map(function(e){return r.parseSsrcMedia(e)}).filter(function(r){return"msid"===r.attribute});return n.length>0?{stream:(t=n[0].value.split(" "))[0],track:t[1]}:void 0},r.parseSctpDescription=function(e){var t,a=r.parseMLine(e),n=r.matchPrefix(e,"a=max-message-size:");n.length>0&&(t=parseInt(n[0].substr(19),10)),isNaN(t)&&(t=65536);var s=r.matchPrefix(e,"a=sctp-port:");if(s.length>0)return{port:parseInt(s[0].substr(12),10),protocol:a.fmt,maxMessageSize:t};if(r.matchPrefix(e,"a=sctpmap:").length>0){var i=r.matchPrefix(e,"a=sctpmap:")[0].substr(10).split(" ");return{port:parseInt(i[0],10),protocol:i[1],maxMessageSize:t}}},r.writeSctpDescription=function(r,e){var t=[];return t="DTLS/SCTP"!==r.protocol?["m="+r.kind+" 9 "+r.protocol+" "+e.protocol+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctp-port:"+e.port+"\r\n"]:["m="+r.kind+" 9 "+r.protocol+" "+e.port+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctpmap:"+e.port+" "+e.protocol+" 65535\r\n"],void 0!==e.maxMessageSize&&t.push("a=max-message-size:"+e.maxMessageSize+"\r\n"),t.join("")},r.generateSessionId=function(){return Math.random().toString().substr(2,21)},r.writeSessionBoilerplate=function(e,t,a){var n=void 0!==t?t:2;return"v=0\r\no="+(a||"thisisadapterortc")+" "+(e||r.generateSessionId())+" "+n+" IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\n"},r.writeMediaSection=function(e,t,a,n){var s=r.writeRtpDescription(e.kind,t);if(s+=r.writeIceParameters(e.iceGatherer.getLocalParameters()),s+=r.writeDtlsParameters(e.dtlsTransport.getLocalParameters(),"offer"===a?"actpass":"active"),s+="a=mid:"+e.mid+"\r\n",e.direction?s+="a="+e.direction+"\r\n":e.rtpSender&&e.rtpReceiver?s+="a=sendrecv\r\n":e.rtpSender?s+="a=sendonly\r\n":e.rtpReceiver?s+="a=recvonly\r\n":s+="a=inactive\r\n",e.rtpSender){var i="msid:"+n.id+" "+e.rtpSender.track.id+"\r\n";s+="a="+i,s+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" "+i,e.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" "+i,s+="a=ssrc-group:FID "+e.sendEncodingParameters[0].ssrc+" "+e.sendEncodingParameters[0].rtx.ssrc+"\r\n")}return s+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" cname:"+r.localCName+"\r\n",e.rtpSender&&e.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" cname:"+r.localCName+"\r\n"),s},r.getDirection=function(e,t){for(var a=r.splitLines(e),n=0;n<a.length;n++)switch(a[n]){case"a=sendrecv":case"a=sendonly":case"a=recvonly":case"a=inactive":return a[n].substr(2)}return t?r.getDirection(t):"sendrecv"},r.getKind=function(e){return r.splitLines(e)[0].split(" ")[0].substr(2)},r.isRejected=function(r){return"0"===r.split(" ",2)[1]},r.parseMLine=function(e){var t=r.splitLines(e)[0].substr(2).split(" ");return{kind:t[0],port:parseInt(t[1],10),protocol:t[2],fmt:t.slice(3).join(" ")}},r.parseOLine=function(e){var t=r.matchPrefix(e,"o=")[0].substr(2).split(" ");return{username:t[0],sessionId:t[1],sessionVersion:parseInt(t[2],10),netType:t[3],addressType:t[4],address:t[5]}},r.isValidSDP=function(e){if("string"!=typeof e||0===e.length)return!1;for(var t=r.splitLines(e),a=0;a<t.length;a++)if(t[a].length<2||"="!==t[a].charAt(1))return!1;return!0},"object"==typeof module&&(module.exports=r);
},{}],"NJ2u":[function(require,module,exports) {
"use strict";var e=require("sdp");function t(e){return{inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"}[e.type]||e.type}function r(t,r,n,a,i){var s=e.writeRtpDescription(t.kind,r);if(s+=e.writeIceParameters(t.iceGatherer.getLocalParameters()),s+=e.writeDtlsParameters(t.dtlsTransport.getLocalParameters(),"offer"===n?"actpass":i||"active"),s+="a=mid:"+t.mid+"\r\n",t.rtpSender&&t.rtpReceiver?s+="a=sendrecv\r\n":t.rtpSender?s+="a=sendonly\r\n":t.rtpReceiver?s+="a=recvonly\r\n":s+="a=inactive\r\n",t.rtpSender){var o=t.rtpSender._initialTrackId||t.rtpSender.track.id;t.rtpSender._initialTrackId=o;var c="msid:"+(a?a.id:"-")+" "+o+"\r\n";s+="a="+c,s+="a=ssrc:"+t.sendEncodingParameters[0].ssrc+" "+c,t.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+t.sendEncodingParameters[0].rtx.ssrc+" "+c,s+="a=ssrc-group:FID "+t.sendEncodingParameters[0].ssrc+" "+t.sendEncodingParameters[0].rtx.ssrc+"\r\n")}return s+="a=ssrc:"+t.sendEncodingParameters[0].ssrc+" cname:"+e.localCName+"\r\n",t.rtpSender&&t.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+t.sendEncodingParameters[0].rtx.ssrc+" cname:"+e.localCName+"\r\n"),s}function n(e,t){var r=!1;return(e=JSON.parse(JSON.stringify(e))).filter(function(e){if(e&&(e.urls||e.url)){var n=e.urls||e.url;e.url&&!e.urls&&console.warn("RTCIceServer.url is deprecated! Use urls instead.");var a="string"==typeof n;return a&&(n=[n]),n=n.filter(function(e){return 0===e.indexOf("turn:")&&-1!==e.indexOf("transport=udp")&&-1===e.indexOf("turn:[")&&!r?(r=!0,!0):0===e.indexOf("stun:")&&t>=14393&&-1===e.indexOf("?transport=udp")}),delete e.url,e.urls=a?n[0]:n,!!n.length}})}function a(e,t){var r={codecs:[],headerExtensions:[],fecMechanisms:[]},n=function(e,t){e=parseInt(e,10);for(var r=0;r<t.length;r++)if(t[r].payloadType===e||t[r].preferredPayloadType===e)return t[r]},a=function(e,t,r,a){var i=n(e.parameters.apt,r),s=n(t.parameters.apt,a);return i&&s&&i.name.toLowerCase()===s.name.toLowerCase()};return e.codecs.forEach(function(n){for(var i=0;i<t.codecs.length;i++){var s=t.codecs[i];if(n.name.toLowerCase()===s.name.toLowerCase()&&n.clockRate===s.clockRate){if("rtx"===n.name.toLowerCase()&&n.parameters&&s.parameters.apt&&!a(n,s,e.codecs,t.codecs))continue;(s=JSON.parse(JSON.stringify(s))).numChannels=Math.min(n.numChannels,s.numChannels),r.codecs.push(s),s.rtcpFeedback=s.rtcpFeedback.filter(function(e){for(var t=0;t<n.rtcpFeedback.length;t++)if(n.rtcpFeedback[t].type===e.type&&n.rtcpFeedback[t].parameter===e.parameter)return!0;return!1});break}}}),e.headerExtensions.forEach(function(e){for(var n=0;n<t.headerExtensions.length;n++){var a=t.headerExtensions[n];if(e.uri===a.uri){r.headerExtensions.push(a);break}}}),r}function i(e,t,r){return-1!=={offer:{setLocalDescription:["stable","have-local-offer"],setRemoteDescription:["stable","have-remote-offer"]},answer:{setLocalDescription:["have-remote-offer","have-local-pranswer"],setRemoteDescription:["have-local-offer","have-remote-pranswer"]}}[t][e].indexOf(r)}function s(e,t){var r=e.getRemoteCandidates().find(function(e){return t.foundation===e.foundation&&t.ip===e.ip&&t.port===e.port&&t.priority===e.priority&&t.protocol===e.protocol&&t.type===e.type});return r||e.addRemoteCandidate(t),!r}function o(e,t){var r=new Error(t);return r.name=e,r.code={NotSupportedError:9,InvalidStateError:11,InvalidAccessError:15,TypeError:void 0,OperationError:void 0}[e],r}module.exports=function(c,d){function p(e,t){t.addTrack(e),t.dispatchEvent(new c.MediaStreamTrackEvent("addtrack",{track:e}))}function l(e,t,r,n){var a=new Event("track");a.track=t,a.receiver=r,a.transceiver={receiver:r},a.streams=n,c.setTimeout(function(){e._dispatchEvent("track",a)})}var f=function(t){var r=this,a=document.createDocumentFragment();if(["addEventListener","removeEventListener","dispatchEvent"].forEach(function(e){r[e]=a[e].bind(a)}),this.canTrickleIceCandidates=null,this.needNegotiation=!1,this.localStreams=[],this.remoteStreams=[],this._localDescription=null,this._remoteDescription=null,this.signalingState="stable",this.iceConnectionState="new",this.connectionState="new",this.iceGatheringState="new",t=JSON.parse(JSON.stringify(t||{})),this.usingBundle="max-bundle"===t.bundlePolicy,"negotiate"===t.rtcpMuxPolicy)throw o("NotSupportedError","rtcpMuxPolicy 'negotiate' is not supported");switch(t.rtcpMuxPolicy||(t.rtcpMuxPolicy="require"),t.iceTransportPolicy){case"all":case"relay":break;default:t.iceTransportPolicy="all"}switch(t.bundlePolicy){case"balanced":case"max-compat":case"max-bundle":break;default:t.bundlePolicy="balanced"}if(t.iceServers=n(t.iceServers||[],d),this._iceGatherers=[],t.iceCandidatePoolSize)for(var i=t.iceCandidatePoolSize;i>0;i--)this._iceGatherers.push(new c.RTCIceGatherer({iceServers:t.iceServers,gatherPolicy:t.iceTransportPolicy}));else t.iceCandidatePoolSize=0;this._config=t,this.transceivers=[],this._sdpSessionId=e.generateSessionId(),this._sdpSessionVersion=0,this._dtlsRole=void 0,this._isClosed=!1};Object.defineProperty(f.prototype,"localDescription",{configurable:!0,get:function(){return this._localDescription}}),Object.defineProperty(f.prototype,"remoteDescription",{configurable:!0,get:function(){return this._remoteDescription}}),f.prototype.onicecandidate=null,f.prototype.onaddstream=null,f.prototype.ontrack=null,f.prototype.onremovestream=null,f.prototype.onsignalingstatechange=null,f.prototype.oniceconnectionstatechange=null,f.prototype.onconnectionstatechange=null,f.prototype.onicegatheringstatechange=null,f.prototype.onnegotiationneeded=null,f.prototype.ondatachannel=null,f.prototype._dispatchEvent=function(e,t){this._isClosed||(this.dispatchEvent(t),"function"==typeof this["on"+e]&&this["on"+e](t))},f.prototype._emitGatheringStateChange=function(){var e=new Event("icegatheringstatechange");this._dispatchEvent("icegatheringstatechange",e)},f.prototype.getConfiguration=function(){return this._config},f.prototype.getLocalStreams=function(){return this.localStreams},f.prototype.getRemoteStreams=function(){return this.remoteStreams},f.prototype._createTransceiver=function(e,t){var r=this.transceivers.length>0,n={track:null,iceGatherer:null,iceTransport:null,dtlsTransport:null,localCapabilities:null,remoteCapabilities:null,rtpSender:null,rtpReceiver:null,kind:e,mid:null,sendEncodingParameters:null,recvEncodingParameters:null,stream:null,associatedRemoteMediaStreams:[],wantReceive:!0};if(this.usingBundle&&r)n.iceTransport=this.transceivers[0].iceTransport,n.dtlsTransport=this.transceivers[0].dtlsTransport;else{var a=this._createIceAndDtlsTransports();n.iceTransport=a.iceTransport,n.dtlsTransport=a.dtlsTransport}return t||this.transceivers.push(n),n},f.prototype.addTrack=function(e,t){if(this._isClosed)throw o("InvalidStateError","Attempted to call addTrack on a closed peerconnection.");var r;if(this.transceivers.find(function(t){return t.track===e}))throw o("InvalidAccessError","Track already exists.");for(var n=0;n<this.transceivers.length;n++)this.transceivers[n].track||this.transceivers[n].kind!==e.kind||(r=this.transceivers[n]);return r||(r=this._createTransceiver(e.kind)),this._maybeFireNegotiationNeeded(),-1===this.localStreams.indexOf(t)&&this.localStreams.push(t),r.track=e,r.stream=t,r.rtpSender=new c.RTCRtpSender(e,r.dtlsTransport),r.rtpSender},f.prototype.addStream=function(e){var t=this;if(d>=15025)e.getTracks().forEach(function(r){t.addTrack(r,e)});else{var r=e.clone();e.getTracks().forEach(function(e,t){var n=r.getTracks()[t];e.addEventListener("enabled",function(e){n.enabled=e.enabled})}),r.getTracks().forEach(function(e){t.addTrack(e,r)})}},f.prototype.removeTrack=function(e){if(this._isClosed)throw o("InvalidStateError","Attempted to call removeTrack on a closed peerconnection.");if(!(e instanceof c.RTCRtpSender))throw new TypeError("Argument 1 of RTCPeerConnection.removeTrack does not implement interface RTCRtpSender.");var t=this.transceivers.find(function(t){return t.rtpSender===e});if(!t)throw o("InvalidAccessError","Sender was not created by this connection.");var r=t.stream;t.rtpSender.stop(),t.rtpSender=null,t.track=null,t.stream=null,-1===this.transceivers.map(function(e){return e.stream}).indexOf(r)&&this.localStreams.indexOf(r)>-1&&this.localStreams.splice(this.localStreams.indexOf(r),1),this._maybeFireNegotiationNeeded()},f.prototype.removeStream=function(e){var t=this;e.getTracks().forEach(function(e){var r=t.getSenders().find(function(t){return t.track===e});r&&t.removeTrack(r)})},f.prototype.getSenders=function(){return this.transceivers.filter(function(e){return!!e.rtpSender}).map(function(e){return e.rtpSender})},f.prototype.getReceivers=function(){return this.transceivers.filter(function(e){return!!e.rtpReceiver}).map(function(e){return e.rtpReceiver})},f.prototype._createIceGatherer=function(e,t){var r=this;if(t&&e>0)return this.transceivers[0].iceGatherer;if(this._iceGatherers.length)return this._iceGatherers.shift();var n=new c.RTCIceGatherer({iceServers:this._config.iceServers,gatherPolicy:this._config.iceTransportPolicy});return Object.defineProperty(n,"state",{value:"new",writable:!0}),this.transceivers[e].bufferedCandidateEvents=[],this.transceivers[e].bufferCandidates=function(t){var a=!t.candidate||0===Object.keys(t.candidate).length;n.state=a?"completed":"gathering",null!==r.transceivers[e].bufferedCandidateEvents&&r.transceivers[e].bufferedCandidateEvents.push(t)},n.addEventListener("localcandidate",this.transceivers[e].bufferCandidates),n},f.prototype._gather=function(t,r){var n=this,a=this.transceivers[r].iceGatherer;if(!a.onlocalcandidate){var i=this.transceivers[r].bufferedCandidateEvents;this.transceivers[r].bufferedCandidateEvents=null,a.removeEventListener("localcandidate",this.transceivers[r].bufferCandidates),a.onlocalcandidate=function(i){if(!(n.usingBundle&&r>0)){var s=new Event("icecandidate");s.candidate={sdpMid:t,sdpMLineIndex:r};var o=i.candidate,c=!o||0===Object.keys(o).length;if(c)"new"!==a.state&&"gathering"!==a.state||(a.state="completed");else{"new"===a.state&&(a.state="gathering"),o.component=1,o.ufrag=a.getLocalParameters().usernameFragment;var d=e.writeCandidate(o);s.candidate=Object.assign(s.candidate,e.parseCandidate(d)),s.candidate.candidate=d,s.candidate.toJSON=function(){return{candidate:s.candidate.candidate,sdpMid:s.candidate.sdpMid,sdpMLineIndex:s.candidate.sdpMLineIndex,usernameFragment:s.candidate.usernameFragment}}}var p=e.getMediaSections(n._localDescription.sdp);p[s.candidate.sdpMLineIndex]+=c?"a=end-of-candidates\r\n":"a="+s.candidate.candidate+"\r\n",n._localDescription.sdp=e.getDescription(n._localDescription.sdp)+p.join("");var l=n.transceivers.every(function(e){return e.iceGatherer&&"completed"===e.iceGatherer.state});"gathering"!==n.iceGatheringState&&(n.iceGatheringState="gathering",n._emitGatheringStateChange()),c||n._dispatchEvent("icecandidate",s),l&&(n._dispatchEvent("icecandidate",new Event("icecandidate")),n.iceGatheringState="complete",n._emitGatheringStateChange())}},c.setTimeout(function(){i.forEach(function(e){a.onlocalcandidate(e)})},0)}},f.prototype._createIceAndDtlsTransports=function(){var e=this,t=new c.RTCIceTransport(null);t.onicestatechange=function(){e._updateIceConnectionState(),e._updateConnectionState()};var r=new c.RTCDtlsTransport(t);return r.ondtlsstatechange=function(){e._updateConnectionState()},r.onerror=function(){Object.defineProperty(r,"state",{value:"failed",writable:!0}),e._updateConnectionState()},{iceTransport:t,dtlsTransport:r}},f.prototype._disposeIceAndDtlsTransports=function(e){var t=this.transceivers[e].iceGatherer;t&&(delete t.onlocalcandidate,delete this.transceivers[e].iceGatherer);var r=this.transceivers[e].iceTransport;r&&(delete r.onicestatechange,delete this.transceivers[e].iceTransport);var n=this.transceivers[e].dtlsTransport;n&&(delete n.ondtlsstatechange,delete n.onerror,delete this.transceivers[e].dtlsTransport)},f.prototype._transceive=function(t,r,n){var i=a(t.localCapabilities,t.remoteCapabilities);r&&t.rtpSender&&(i.encodings=t.sendEncodingParameters,i.rtcp={cname:e.localCName,compound:t.rtcpParameters.compound},t.recvEncodingParameters.length&&(i.rtcp.ssrc=t.recvEncodingParameters[0].ssrc),t.rtpSender.send(i)),n&&t.rtpReceiver&&i.codecs.length>0&&("video"===t.kind&&t.recvEncodingParameters&&d<15019&&t.recvEncodingParameters.forEach(function(e){delete e.rtx}),t.recvEncodingParameters.length?i.encodings=t.recvEncodingParameters:i.encodings=[{}],i.rtcp={compound:t.rtcpParameters.compound},t.rtcpParameters.cname&&(i.rtcp.cname=t.rtcpParameters.cname),t.sendEncodingParameters.length&&(i.rtcp.ssrc=t.sendEncodingParameters[0].ssrc),t.rtpReceiver.receive(i))},f.prototype.setLocalDescription=function(t){var r,n,s=this;if(-1===["offer","answer"].indexOf(t.type))return Promise.reject(o("TypeError",'Unsupported type "'+t.type+'"'));if(!i("setLocalDescription",t.type,s.signalingState)||s._isClosed)return Promise.reject(o("InvalidStateError","Can not set local "+t.type+" in state "+s.signalingState));if("offer"===t.type)r=e.splitSections(t.sdp),n=r.shift(),r.forEach(function(t,r){var n=e.parseRtpParameters(t);s.transceivers[r].localCapabilities=n}),s.transceivers.forEach(function(e,t){s._gather(e.mid,t)});else if("answer"===t.type){r=e.splitSections(s._remoteDescription.sdp),n=r.shift();var c=e.matchPrefix(n,"a=ice-lite").length>0;r.forEach(function(t,r){var i=s.transceivers[r],o=i.iceGatherer,d=i.iceTransport,p=i.dtlsTransport,l=i.localCapabilities,f=i.remoteCapabilities;if(!(e.isRejected(t)&&0===e.matchPrefix(t,"a=bundle-only").length)&&!i.rejected){var u=e.getIceParameters(t,n),v=e.getDtlsParameters(t,n);c&&(v.role="server"),s.usingBundle&&0!==r||(s._gather(i.mid,r),"new"===d.state&&d.start(o,u,c?"controlling":"controlled"),"new"===p.state&&p.start(v));var h=a(l,f);s._transceive(i,h.codecs.length>0,!1)}})}return s._localDescription={type:t.type,sdp:t.sdp},"offer"===t.type?s._updateSignalingState("have-local-offer"):s._updateSignalingState("stable"),Promise.resolve()},f.prototype.setRemoteDescription=function(t){var r=this;if(-1===["offer","answer"].indexOf(t.type))return Promise.reject(o("TypeError",'Unsupported type "'+t.type+'"'));if(!i("setRemoteDescription",t.type,r.signalingState)||r._isClosed)return Promise.reject(o("InvalidStateError","Can not set remote "+t.type+" in state "+r.signalingState));var n={};r.remoteStreams.forEach(function(e){n[e.id]=e});var f=[],u=e.splitSections(t.sdp),v=u.shift(),h=e.matchPrefix(v,"a=ice-lite").length>0,m=e.matchPrefix(v,"a=group:BUNDLE ").length>0;r.usingBundle=m;var g=e.matchPrefix(v,"a=ice-options:")[0];return r.canTrickleIceCandidates=!!g&&g.substr(14).split(" ").indexOf("trickle")>=0,u.forEach(function(i,o){var l=e.splitLines(i),u=e.getKind(i),g=e.isRejected(i)&&0===e.matchPrefix(i,"a=bundle-only").length,y=l[0].substr(2).split(" ")[2],S=e.getDirection(i,v),T=e.parseMsid(i),E=e.getMid(i)||e.generateIdentifier();if(g||"application"===u&&("DTLS/SCTP"===y||"UDP/DTLS/SCTP"===y))r.transceivers[o]={mid:E,kind:u,protocol:y,rejected:!0};else{var C,P,w,R,_,k,b,x,D;!g&&r.transceivers[o]&&r.transceivers[o].rejected&&(r.transceivers[o]=r._createTransceiver(u,!0));var I,L,M=e.parseRtpParameters(i);g||(I=e.getIceParameters(i,v),(L=e.getDtlsParameters(i,v)).role="client"),b=e.parseRtpEncodingParameters(i);var O=e.parseRtcpParameters(i),G=e.matchPrefix(i,"a=end-of-candidates",v).length>0,j=e.matchPrefix(i,"a=candidate:").map(function(t){return e.parseCandidate(t)}).filter(function(e){return 1===e.component});if(("offer"===t.type||"answer"===t.type)&&!g&&m&&o>0&&r.transceivers[o]&&(r._disposeIceAndDtlsTransports(o),r.transceivers[o].iceGatherer=r.transceivers[0].iceGatherer,r.transceivers[o].iceTransport=r.transceivers[0].iceTransport,r.transceivers[o].dtlsTransport=r.transceivers[0].dtlsTransport,r.transceivers[o].rtpSender&&r.transceivers[o].rtpSender.setTransport(r.transceivers[0].dtlsTransport),r.transceivers[o].rtpReceiver&&r.transceivers[o].rtpReceiver.setTransport(r.transceivers[0].dtlsTransport)),"offer"!==t.type||g){if("answer"===t.type&&!g){P=(C=r.transceivers[o]).iceGatherer,w=C.iceTransport,R=C.dtlsTransport,_=C.rtpReceiver,k=C.sendEncodingParameters,x=C.localCapabilities,r.transceivers[o].recvEncodingParameters=b,r.transceivers[o].remoteCapabilities=M,r.transceivers[o].rtcpParameters=O,j.length&&"new"===w.state&&(!h&&!G||m&&0!==o?j.forEach(function(e){s(C.iceTransport,e)}):w.setRemoteCandidates(j)),m&&0!==o||("new"===w.state&&w.start(P,I,"controlling"),"new"===R.state&&R.start(L)),!a(C.localCapabilities,C.remoteCapabilities).codecs.filter(function(e){return"rtx"===e.name.toLowerCase()}).length&&C.sendEncodingParameters[0].rtx&&delete C.sendEncodingParameters[0].rtx,r._transceive(C,"sendrecv"===S||"recvonly"===S,"sendrecv"===S||"sendonly"===S),!_||"sendrecv"!==S&&"sendonly"!==S?delete C.rtpReceiver:(D=_.track,T?(n[T.stream]||(n[T.stream]=new c.MediaStream),p(D,n[T.stream]),f.push([D,_,n[T.stream]])):(n.default||(n.default=new c.MediaStream),p(D,n.default),f.push([D,_,n.default])))}}else{(C=r.transceivers[o]||r._createTransceiver(u)).mid=E,C.iceGatherer||(C.iceGatherer=r._createIceGatherer(o,m)),j.length&&"new"===C.iceTransport.state&&(!G||m&&0!==o?j.forEach(function(e){s(C.iceTransport,e)}):C.iceTransport.setRemoteCandidates(j)),x=c.RTCRtpReceiver.getCapabilities(u),d<15019&&(x.codecs=x.codecs.filter(function(e){return"rtx"!==e.name})),k=C.sendEncodingParameters||[{ssrc:1001*(2*o+2)}];var N,A=!1;if("sendrecv"===S||"sendonly"===S){if(A=!C.rtpReceiver,_=C.rtpReceiver||new c.RTCRtpReceiver(C.dtlsTransport,u),A)D=_.track,T&&"-"===T.stream||(T?(n[T.stream]||(n[T.stream]=new c.MediaStream,Object.defineProperty(n[T.stream],"id",{get:function(){return T.stream}})),Object.defineProperty(D,"id",{get:function(){return T.track}}),N=n[T.stream]):(n.default||(n.default=new c.MediaStream),N=n.default)),N&&(p(D,N),C.associatedRemoteMediaStreams.push(N)),f.push([D,_,N])}else C.rtpReceiver&&C.rtpReceiver.track&&(C.associatedRemoteMediaStreams.forEach(function(e){var t,r,n=e.getTracks().find(function(e){return e.id===C.rtpReceiver.track.id});n&&(t=n,(r=e).removeTrack(t),r.dispatchEvent(new c.MediaStreamTrackEvent("removetrack",{track:t})))}),C.associatedRemoteMediaStreams=[]);C.localCapabilities=x,C.remoteCapabilities=M,C.rtpReceiver=_,C.rtcpParameters=O,C.sendEncodingParameters=k,C.recvEncodingParameters=b,r._transceive(r.transceivers[o],!1,A)}}}),void 0===r._dtlsRole&&(r._dtlsRole="offer"===t.type?"active":"passive"),r._remoteDescription={type:t.type,sdp:t.sdp},"offer"===t.type?r._updateSignalingState("have-remote-offer"):r._updateSignalingState("stable"),Object.keys(n).forEach(function(e){var t=n[e];if(t.getTracks().length){if(-1===r.remoteStreams.indexOf(t)){r.remoteStreams.push(t);var a=new Event("addstream");a.stream=t,c.setTimeout(function(){r._dispatchEvent("addstream",a)})}f.forEach(function(e){var n=e[0],a=e[1];t.id===e[2].id&&l(r,n,a,[t])})}}),f.forEach(function(e){e[2]||l(r,e[0],e[1],[])}),c.setTimeout(function(){r&&r.transceivers&&r.transceivers.forEach(function(e){e.iceTransport&&"new"===e.iceTransport.state&&e.iceTransport.getRemoteCandidates().length>0&&(console.warn("Timeout for addRemoteCandidate. Consider sending an end-of-candidates notification"),e.iceTransport.addRemoteCandidate({}))})},4e3),Promise.resolve()},f.prototype.close=function(){this.transceivers.forEach(function(e){e.iceTransport&&e.iceTransport.stop(),e.dtlsTransport&&e.dtlsTransport.stop(),e.rtpSender&&e.rtpSender.stop(),e.rtpReceiver&&e.rtpReceiver.stop()}),this._isClosed=!0,this._updateSignalingState("closed")},f.prototype._updateSignalingState=function(e){this.signalingState=e;var t=new Event("signalingstatechange");this._dispatchEvent("signalingstatechange",t)},f.prototype._maybeFireNegotiationNeeded=function(){var e=this;"stable"===this.signalingState&&!0!==this.needNegotiation&&(this.needNegotiation=!0,c.setTimeout(function(){if(e.needNegotiation){e.needNegotiation=!1;var t=new Event("negotiationneeded");e._dispatchEvent("negotiationneeded",t)}},0))},f.prototype._updateIceConnectionState=function(){var e,t={new:0,closed:0,checking:0,connected:0,completed:0,disconnected:0,failed:0};if(this.transceivers.forEach(function(e){e.iceTransport&&!e.rejected&&t[e.iceTransport.state]++}),e="new",t.failed>0?e="failed":t.checking>0?e="checking":t.disconnected>0?e="disconnected":t.new>0?e="new":t.connected>0?e="connected":t.completed>0&&(e="completed"),e!==this.iceConnectionState){this.iceConnectionState=e;var r=new Event("iceconnectionstatechange");this._dispatchEvent("iceconnectionstatechange",r)}},f.prototype._updateConnectionState=function(){var e,t={new:0,closed:0,connecting:0,connected:0,completed:0,disconnected:0,failed:0};if(this.transceivers.forEach(function(e){e.iceTransport&&e.dtlsTransport&&!e.rejected&&(t[e.iceTransport.state]++,t[e.dtlsTransport.state]++)}),t.connected+=t.completed,e="new",t.failed>0?e="failed":t.connecting>0?e="connecting":t.disconnected>0?e="disconnected":t.new>0?e="new":t.connected>0&&(e="connected"),e!==this.connectionState){this.connectionState=e;var r=new Event("connectionstatechange");this._dispatchEvent("connectionstatechange",r)}},f.prototype.createOffer=function(){var t=this;if(t._isClosed)return Promise.reject(o("InvalidStateError","Can not call createOffer after close"));var n=t.transceivers.filter(function(e){return"audio"===e.kind}).length,a=t.transceivers.filter(function(e){return"video"===e.kind}).length,i=arguments[0];if(i){if(i.mandatory||i.optional)throw new TypeError("Legacy mandatory/optional constraints not supported.");void 0!==i.offerToReceiveAudio&&(n=!0===i.offerToReceiveAudio?1:!1===i.offerToReceiveAudio?0:i.offerToReceiveAudio),void 0!==i.offerToReceiveVideo&&(a=!0===i.offerToReceiveVideo?1:!1===i.offerToReceiveVideo?0:i.offerToReceiveVideo)}for(t.transceivers.forEach(function(e){"audio"===e.kind?--n<0&&(e.wantReceive=!1):"video"===e.kind&&--a<0&&(e.wantReceive=!1)});n>0||a>0;)n>0&&(t._createTransceiver("audio"),n--),a>0&&(t._createTransceiver("video"),a--);var s=e.writeSessionBoilerplate(t._sdpSessionId,t._sdpSessionVersion++);t.transceivers.forEach(function(r,n){var a=r.track,i=r.kind,s=r.mid||e.generateIdentifier();r.mid=s,r.iceGatherer||(r.iceGatherer=t._createIceGatherer(n,t.usingBundle));var o=c.RTCRtpSender.getCapabilities(i);d<15019&&(o.codecs=o.codecs.filter(function(e){return"rtx"!==e.name})),o.codecs.forEach(function(e){"H264"===e.name&&void 0===e.parameters["level-asymmetry-allowed"]&&(e.parameters["level-asymmetry-allowed"]="1"),r.remoteCapabilities&&r.remoteCapabilities.codecs&&r.remoteCapabilities.codecs.forEach(function(t){e.name.toLowerCase()===t.name.toLowerCase()&&e.clockRate===t.clockRate&&(e.preferredPayloadType=t.payloadType)})}),o.headerExtensions.forEach(function(e){(r.remoteCapabilities&&r.remoteCapabilities.headerExtensions||[]).forEach(function(t){e.uri===t.uri&&(e.id=t.id)})});var p=r.sendEncodingParameters||[{ssrc:1001*(2*n+1)}];a&&d>=15019&&"video"===i&&!p[0].rtx&&(p[0].rtx={ssrc:p[0].ssrc+1}),r.wantReceive&&(r.rtpReceiver=new c.RTCRtpReceiver(r.dtlsTransport,i)),r.localCapabilities=o,r.sendEncodingParameters=p}),"max-compat"!==t._config.bundlePolicy&&(s+="a=group:BUNDLE "+t.transceivers.map(function(e){return e.mid}).join(" ")+"\r\n"),s+="a=ice-options:trickle\r\n",t.transceivers.forEach(function(n,a){s+=r(n,n.localCapabilities,"offer",n.stream,t._dtlsRole),s+="a=rtcp-rsize\r\n",!n.iceGatherer||"new"===t.iceGatheringState||0!==a&&t.usingBundle||(n.iceGatherer.getLocalCandidates().forEach(function(t){t.component=1,s+="a="+e.writeCandidate(t)+"\r\n"}),"completed"===n.iceGatherer.state&&(s+="a=end-of-candidates\r\n"))});var p=new c.RTCSessionDescription({type:"offer",sdp:s});return Promise.resolve(p)},f.prototype.createAnswer=function(){var t=this;if(t._isClosed)return Promise.reject(o("InvalidStateError","Can not call createAnswer after close"));if("have-remote-offer"!==t.signalingState&&"have-local-pranswer"!==t.signalingState)return Promise.reject(o("InvalidStateError","Can not call createAnswer in signalingState "+t.signalingState));var n=e.writeSessionBoilerplate(t._sdpSessionId,t._sdpSessionVersion++);t.usingBundle&&(n+="a=group:BUNDLE "+t.transceivers.map(function(e){return e.mid}).join(" ")+"\r\n"),n+="a=ice-options:trickle\r\n";var i=e.getMediaSections(t._remoteDescription.sdp).length;t.transceivers.forEach(function(e,s){if(!(s+1>i)){if(e.rejected)return"application"===e.kind?"DTLS/SCTP"===e.protocol?n+="m=application 0 DTLS/SCTP 5000\r\n":n+="m=application 0 "+e.protocol+" webrtc-datachannel\r\n":"audio"===e.kind?n+="m=audio 0 UDP/TLS/RTP/SAVPF 0\r\na=rtpmap:0 PCMU/8000\r\n":"video"===e.kind&&(n+="m=video 0 UDP/TLS/RTP/SAVPF 120\r\na=rtpmap:120 VP8/90000\r\n"),void(n+="c=IN IP4 0.0.0.0\r\na=inactive\r\na=mid:"+e.mid+"\r\n");var o;if(e.stream)"audio"===e.kind?o=e.stream.getAudioTracks()[0]:"video"===e.kind&&(o=e.stream.getVideoTracks()[0]),o&&d>=15019&&"video"===e.kind&&!e.sendEncodingParameters[0].rtx&&(e.sendEncodingParameters[0].rtx={ssrc:e.sendEncodingParameters[0].ssrc+1});var c=a(e.localCapabilities,e.remoteCapabilities);!c.codecs.filter(function(e){return"rtx"===e.name.toLowerCase()}).length&&e.sendEncodingParameters[0].rtx&&delete e.sendEncodingParameters[0].rtx,n+=r(e,c,"answer",e.stream,t._dtlsRole),e.rtcpParameters&&e.rtcpParameters.reducedSize&&(n+="a=rtcp-rsize\r\n")}});var s=new c.RTCSessionDescription({type:"answer",sdp:n});return Promise.resolve(s)},f.prototype.addIceCandidate=function(t){var r,n=this;return t&&void 0===t.sdpMLineIndex&&!t.sdpMid?Promise.reject(new TypeError("sdpMLineIndex or sdpMid required")):new Promise(function(a,i){if(!n._remoteDescription)return i(o("InvalidStateError","Can not add ICE candidate without a remote description"));if(t&&""!==t.candidate){var c=t.sdpMLineIndex;if(t.sdpMid)for(var d=0;d<n.transceivers.length;d++)if(n.transceivers[d].mid===t.sdpMid){c=d;break}var p=n.transceivers[c];if(!p)return i(o("OperationError","Can not add ICE candidate"));if(p.rejected)return a();var l=Object.keys(t.candidate).length>0?e.parseCandidate(t.candidate):{};if("tcp"===l.protocol&&(0===l.port||9===l.port))return a();if(l.component&&1!==l.component)return a();if((0===c||c>0&&p.iceTransport!==n.transceivers[0].iceTransport)&&!s(p.iceTransport,l))return i(o("OperationError","Can not add ICE candidate"));var f=t.candidate.trim();0===f.indexOf("a=")&&(f=f.substr(2)),(r=e.getMediaSections(n._remoteDescription.sdp))[c]+="a="+(l.type?f:"end-of-candidates")+"\r\n",n._remoteDescription.sdp=e.getDescription(n._remoteDescription.sdp)+r.join("")}else for(var u=0;u<n.transceivers.length&&(n.transceivers[u].rejected||(n.transceivers[u].iceTransport.addRemoteCandidate({}),(r=e.getMediaSections(n._remoteDescription.sdp))[u]+="a=end-of-candidates\r\n",n._remoteDescription.sdp=e.getDescription(n._remoteDescription.sdp)+r.join(""),!n.usingBundle));u++);a()})},f.prototype.getStats=function(e){if(e&&e instanceof c.MediaStreamTrack){var t=null;if(this.transceivers.forEach(function(r){r.rtpSender&&r.rtpSender.track===e?t=r.rtpSender:r.rtpReceiver&&r.rtpReceiver.track===e&&(t=r.rtpReceiver)}),!t)throw o("InvalidAccessError","Invalid selector.");return t.getStats()}var r=[];return this.transceivers.forEach(function(e){["rtpSender","rtpReceiver","iceGatherer","iceTransport","dtlsTransport"].forEach(function(t){e[t]&&r.push(e[t].getStats())})}),Promise.all(r).then(function(e){var t=new Map;return e.forEach(function(e){e.forEach(function(e){t.set(e.id,e)})}),t})};["RTCRtpSender","RTCRtpReceiver","RTCIceGatherer","RTCIceTransport","RTCDtlsTransport"].forEach(function(e){var r=c[e];if(r&&r.prototype&&r.prototype.getStats){var n=r.prototype.getStats;r.prototype.getStats=function(){return n.apply(this).then(function(e){var r=new Map;return Object.keys(e).forEach(function(n){e[n].type=t(e[n]),r.set(n,e[n])}),r})}}});var u=["createOffer","createAnswer"];return u.forEach(function(e){var t=f.prototype[e];f.prototype[e]=function(){var e=arguments;return"function"==typeof e[0]||"function"==typeof e[1]?t.apply(this,[arguments[2]]).then(function(t){"function"==typeof e[0]&&e[0].apply(null,[t])},function(t){"function"==typeof e[1]&&e[1].apply(null,[t])}):t.apply(this,arguments)}}),(u=["setLocalDescription","setRemoteDescription","addIceCandidate"]).forEach(function(e){var t=f.prototype[e];f.prototype[e]=function(){var e=arguments;return"function"==typeof e[1]||"function"==typeof e[2]?t.apply(this,arguments).then(function(){"function"==typeof e[1]&&e[1].apply(null)},function(t){"function"==typeof e[2]&&e[2].apply(null,[t])}):t.apply(this,arguments)}}),["getStats"].forEach(function(e){var t=f.prototype[e];f.prototype[e]=function(){var e=arguments;return"function"==typeof e[1]?t.apply(this,arguments).then(function(){"function"==typeof e[1]&&e[1].apply(null)}):t.apply(this,arguments)}}),f};
},{"sdp":"YHvh"}],"YdKx":[function(require,module,exports) {
"use strict";function e(e){var r=e&&e.navigator,t=r.mediaDevices.getUserMedia.bind(r.mediaDevices);r.mediaDevices.getUserMedia=function(e){return t(e).catch(function(e){return Promise.reject(function(e){return{name:{PermissionDeniedError:"NotAllowedError"}[e.name]||e.name,message:e.message,constraint:e.constraint,toString:function(){return this.name}}}(e))})}}Object.defineProperty(exports,"__esModule",{value:!0}),exports.shimGetUserMedia=e;
},{}],"P3bV":[function(require,module,exports) {
"use strict";function e(e){"getDisplayMedia"in e.navigator&&e.navigator.mediaDevices&&(e.navigator.mediaDevices&&"getDisplayMedia"in e.navigator.mediaDevices||(e.navigator.mediaDevices.getDisplayMedia=e.navigator.getDisplayMedia.bind(e.navigator)))}Object.defineProperty(exports,"__esModule",{value:!0}),exports.shimGetDisplayMedia=e;
},{}],"XRic":[function(require,module,exports) {
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},{"../utils":"iSxC","./filtericeservers":"NZ1C","rtcpeerconnection-shim":"NJ2u","./getusermedia":"YdKx","./getdisplaymedia":"P3bV"}],"GzSv":[function(require,module,exports) {
"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.shimGetUserMedia=n;var e=o(require("../utils"));function t(){if("function"!=typeof WeakMap)return null;var e=new WeakMap;return t=function(){return e},e}function o(e){if(e&&e.__esModule)return e;if(null===e||"object"!=typeof e&&"function"!=typeof e)return{default:e};var o=t();if(o&&o.has(e))return o.get(e);var r={},n=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(var i in e)if(Object.prototype.hasOwnProperty.call(e,i)){var a=n?Object.getOwnPropertyDescriptor(e,i):null;a&&(a.get||a.set)?Object.defineProperty(r,i,a):r[i]=e[i]}return r.default=e,o&&o.set(e,r),r}function r(e){return(r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function n(t,o){var n=t&&t.navigator,i=t&&t.MediaStreamTrack;if(n.getUserMedia=function(t,o,r){e.deprecated("navigator.getUserMedia","navigator.mediaDevices.getUserMedia"),n.mediaDevices.getUserMedia(t).then(o,r)},!(o.version>55&&"autoGainControl"in n.mediaDevices.getSupportedConstraints())){var a=function(e,t,o){t in e&&!(o in e)&&(e[o]=e[t],delete e[t])},s=n.mediaDevices.getUserMedia.bind(n.mediaDevices);if(n.mediaDevices.getUserMedia=function(e){return"object"===r(e)&&"object"===r(e.audio)&&(e=JSON.parse(JSON.stringify(e)),a(e.audio,"autoGainControl","mozAutoGainControl"),a(e.audio,"noiseSuppression","mozNoiseSuppression")),s(e)},i&&i.prototype.getSettings){var p=i.prototype.getSettings;i.prototype.getSettings=function(){var e=p.apply(this,arguments);return a(e,"mozAutoGainControl","autoGainControl"),a(e,"mozNoiseSuppression","noiseSuppression"),e}}if(i&&i.prototype.applyConstraints){var u=i.prototype.applyConstraints;i.prototype.applyConstraints=function(e){return"audio"===this.kind&&"object"===r(e)&&(e=JSON.parse(JSON.stringify(e)),a(e,"autoGainControl","mozAutoGainControl"),a(e,"noiseSuppression","mozNoiseSuppression")),u.apply(this,[e])}}}}
},{"../utils":"iSxC"}],"UuGU":[function(require,module,exports) {
"use strict";function e(e,i){e.navigator.mediaDevices&&"getDisplayMedia"in e.navigator.mediaDevices||e.navigator.mediaDevices&&(e.navigator.mediaDevices.getDisplayMedia=function(a){if(!a||!a.video){var t=new DOMException("getDisplayMedia without video constraints is undefined");return t.name="NotFoundError",t.code=8,Promise.reject(t)}return!0===a.video?a.video={mediaSource:i}:a.video.mediaSource=i,e.navigator.mediaDevices.getUserMedia(a)})}Object.defineProperty(exports,"__esModule",{value:!0}),exports.shimGetDisplayMedia=e;
},{}],"Fzdr":[function(require,module,exports) {
"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.shimOnTrack=s,exports.shimPeerConnection=c,exports.shimSenderGetStats=p,exports.shimReceiverGetStats=u,exports.shimRemoveStream=f,exports.shimRTCDataChannel=d,exports.shimAddTransceiver=C,exports.shimGetParameters=y,exports.shimCreateOffer=l,exports.shimCreateAnswer=m,Object.defineProperty(exports,"shimGetUserMedia",{enumerable:!0,get:function(){return t.shimGetUserMedia}}),Object.defineProperty(exports,"shimGetDisplayMedia",{enumerable:!0,get:function(){return n.shimGetDisplayMedia}});var e=o(require("../utils")),t=require("./getusermedia"),n=require("./getdisplaymedia");function r(){if("function"!=typeof WeakMap)return null;var e=new WeakMap;return r=function(){return e},e}function o(e){if(e&&e.__esModule)return e;if(null===e||"object"!=typeof e&&"function"!=typeof e)return{default:e};var t=r();if(t&&t.has(e))return t.get(e);var n={},o=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(var i in e)if(Object.prototype.hasOwnProperty.call(e,i)){var a=o?Object.getOwnPropertyDescriptor(e,i):null;a&&(a.get||a.set)?Object.defineProperty(n,i,a):n[i]=e[i]}return n.default=e,t&&t.set(e,n),n}function i(e,t,n){return t in e?Object.defineProperty(e,t,{value:n,enumerable:!0,configurable:!0,writable:!0}):e[t]=n,e}function a(e){return(a="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function s(e){"object"===a(e)&&e.RTCTrackEvent&&"receiver"in e.RTCTrackEvent.prototype&&!("transceiver"in e.RTCTrackEvent.prototype)&&Object.defineProperty(e.RTCTrackEvent.prototype,"transceiver",{get:function(){return{receiver:this.receiver}}})}function c(e,t){if("object"===a(e)&&(e.RTCPeerConnection||e.mozRTCPeerConnection)){!e.RTCPeerConnection&&e.mozRTCPeerConnection&&(e.RTCPeerConnection=e.mozRTCPeerConnection),t.version<53&&["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(t){var n=e.RTCPeerConnection.prototype[t],r=i({},t,function(){return arguments[0]=new("addIceCandidate"===t?e.RTCIceCandidate:e.RTCSessionDescription)(arguments[0]),n.apply(this,arguments)});e.RTCPeerConnection.prototype[t]=r[t]});var n={inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"},r=e.RTCPeerConnection.prototype.getStats;e.RTCPeerConnection.prototype.getStats=function(){var[e,o,i]=arguments;return r.apply(this,[e||null]).then(function(e){if(t.version<53&&!o)try{e.forEach(function(e){e.type=n[e.type]||e.type})}catch(r){if("TypeError"!==r.name)throw r;e.forEach(function(t,r){e.set(r,Object.assign({},t,{type:n[t.type]||t.type}))})}return e}).then(o,i)}}}function p(e){if("object"===a(e)&&e.RTCPeerConnection&&e.RTCRtpSender&&!(e.RTCRtpSender&&"getStats"in e.RTCRtpSender.prototype)){var t=e.RTCPeerConnection.prototype.getSenders;t&&(e.RTCPeerConnection.prototype.getSenders=function(){var e=this,n=t.apply(this,[]);return n.forEach(function(t){return t._pc=e}),n});var n=e.RTCPeerConnection.prototype.addTrack;n&&(e.RTCPeerConnection.prototype.addTrack=function(){var e=n.apply(this,arguments);return e._pc=this,e}),e.RTCRtpSender.prototype.getStats=function(){return this.track?this._pc.getStats(this.track):Promise.resolve(new Map)}}}function u(t){if("object"===a(t)&&t.RTCPeerConnection&&t.RTCRtpSender&&!(t.RTCRtpSender&&"getStats"in t.RTCRtpReceiver.prototype)){var n=t.RTCPeerConnection.prototype.getReceivers;n&&(t.RTCPeerConnection.prototype.getReceivers=function(){var e=this,t=n.apply(this,[]);return t.forEach(function(t){return t._pc=e}),t}),e.wrapPeerConnectionEvent(t,"track",function(e){return e.receiver._pc=e.srcElement,e}),t.RTCRtpReceiver.prototype.getStats=function(){return this._pc.getStats(this.track)}}}function f(t){!t.RTCPeerConnection||"removeStream"in t.RTCPeerConnection.prototype||(t.RTCPeerConnection.prototype.removeStream=function(t){var n=this;e.deprecated("removeStream","removeTrack"),this.getSenders().forEach(function(e){e.track&&t.getTracks().includes(e.track)&&n.removeTrack(e)})})}function d(e){e.DataChannel&&!e.RTCDataChannel&&(e.RTCDataChannel=e.DataChannel)}function C(e){if("object"===a(e)&&e.RTCPeerConnection){var t=e.RTCPeerConnection.prototype.addTransceiver;t&&(e.RTCPeerConnection.prototype.addTransceiver=function(){this.setParametersPromises=[];var e=arguments[1],n=e&&"sendEncodings"in e;n&&e.sendEncodings.forEach(function(e){if("rid"in e){if(!/^[a-z0-9]{0,16}$/i.test(e.rid))throw new TypeError("Invalid RID value provided.")}if("scaleResolutionDownBy"in e&&!(parseFloat(e.scaleResolutionDownBy)>=1))throw new RangeError("scale_resolution_down_by must be >= 1.0");if("maxFramerate"in e&&!(parseFloat(e.maxFramerate)>=0))throw new RangeError("max_framerate must be >= 0.0")});var r=t.apply(this,arguments);if(n){var{sender:o}=r,i=o.getParameters();"encodings"in i&&(1!==i.encodings.length||0!==Object.keys(i.encodings[0]).length)||(i.encodings=e.sendEncodings,o.sendEncodings=e.sendEncodings,this.setParametersPromises.push(o.setParameters(i).then(function(){delete o.sendEncodings}).catch(function(){delete o.sendEncodings})))}return r})}}function y(e){if("object"===a(e)&&e.RTCRtpSender){var t=e.RTCRtpSender.prototype.getParameters;t&&(e.RTCRtpSender.prototype.getParameters=function(){var e=t.apply(this,arguments);return"encodings"in e||(e.encodings=[].concat(this.sendEncodings||[{}])),e})}}function l(e){if("object"===a(e)&&e.RTCPeerConnection){var t=e.RTCPeerConnection.prototype.createOffer;e.RTCPeerConnection.prototype.createOffer=function(){var e=arguments,n=this;return this.setParametersPromises&&this.setParametersPromises.length?Promise.all(this.setParametersPromises).then(function(){return t.apply(n,e)}).finally(function(){n.setParametersPromises=[]}):t.apply(this,arguments)}}}function m(e){if("object"===a(e)&&e.RTCPeerConnection){var t=e.RTCPeerConnection.prototype.createAnswer;e.RTCPeerConnection.prototype.createAnswer=function(){var e=arguments,n=this;return this.setParametersPromises&&this.setParametersPromises.length?Promise.all(this.setParametersPromises).then(function(){return t.apply(n,e)}).finally(function(){n.setParametersPromises=[]}):t.apply(this,arguments)}}}
},{"../utils":"iSxC","./getusermedia":"GzSv","./getdisplaymedia":"UuGU"}],"t1lL":[function(require,module,exports) {
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typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function n(e){if("object"===o(e)&&e.RTCPeerConnection){if("getLocalStreams"in e.RTCPeerConnection.prototype||(e.RTCPeerConnection.prototype.getLocalStreams=function(){return this._localStreams||(this._localStreams=[]),this._localStreams}),!("addStream"in e.RTCPeerConnection.prototype)){var t=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addStream=function(e){var r=this;this._localStreams||(this._localStreams=[]),this._localStreams.includes(e)||this._localStreams.push(e),e.getAudioTracks().forEach(function(o){return t.call(r,o,e)}),e.getVideoTracks().forEach(function(o){return t.call(r,o,e)})},e.RTCPeerConnection.prototype.addTrack=function(e){for(var r=this,o=arguments.length,n=new Array(o>1?o-1:0),i=1;i<o;i++)n[i-1]=arguments[i];return n&&n.forEach(function(e){r._localStreams?r._localStreams.includes(e)||r._localStreams.push(e):r._localStreams=[e]}),t.apply(this,arguments)}}"removeStream"in e.RTCPeerConnection.prototype||(e.RTCPeerConnection.prototype.removeStream=function(e){var t=this;this._localStreams||(this._localStreams=[]);var r=this._localStreams.indexOf(e);if(-1!==r){this._localStreams.splice(r,1);var o=e.getTracks();this.getSenders().forEach(function(e){o.includes(e.track)&&t.removeTrack(e)})}})}}function i(e){if("object"===o(e)&&e.RTCPeerConnection&&("getRemoteStreams"in e.RTCPeerConnection.prototype||(e.RTCPeerConnection.prototype.getRemoteStreams=function(){return this._remoteStreams?this._remoteStreams:[]}),!("onaddstream"in e.RTCPeerConnection.prototype))){Object.defineProperty(e.RTCPeerConnection.prototype,"onaddstream",{get:function(){return this._onaddstream},set:function(e){var t=this;this._onaddstream&&(this.removeEventListener("addstream",this._onaddstream),this.removeEventListener("track",this._onaddstreampoly)),this.addEventListener("addstream",this._onaddstream=e),this.addEventListener("track",this._onaddstreampoly=function(e){e.streams.forEach(function(e){if(t._remoteStreams||(t._remoteStreams=[]),!t._remoteStreams.includes(e)){t._remoteStreams.push(e);var r=new Event("addstream");r.stream=e,t.dispatchEvent(r)}})})}});var t=e.RTCPeerConnection.prototype.setRemoteDescription;e.RTCPeerConnection.prototype.setRemoteDescription=function(){var e=this;return this._onaddstreampoly||this.addEventListener("track",this._onaddstreampoly=function(t){t.streams.forEach(function(t){if(e._remoteStreams||(e._remoteStreams=[]),!(e._remoteStreams.indexOf(t)>=0)){e._remoteStreams.push(t);var r=new Event("addstream");r.stream=t,e.dispatchEvent(r)}})}),t.apply(e,arguments)}}}function a(e){if("object"===o(e)&&e.RTCPeerConnection){var t=e.RTCPeerConnection.prototype,r=t.createOffer,n=t.createAnswer,i=t.setLocalDescription,a=t.setRemoteDescription,c=t.addIceCandidate;t.createOffer=function(e,t){var o=arguments.length>=2?arguments[2]:arguments[0],n=r.apply(this,[o]);return t?(n.then(e,t),Promise.resolve()):n},t.createAnswer=function(e,t){var r=arguments.length>=2?arguments[2]:arguments[0],o=n.apply(this,[r]);return t?(o.then(e,t),Promise.resolve()):o};var s=function(e,t,r){var o=i.apply(this,[e]);return r?(o.then(t,r),Promise.resolve()):o};t.setLocalDescription=s,s=function(e,t,r){var o=a.apply(this,[e]);return r?(o.then(t,r),Promise.resolve()):o},t.setRemoteDescription=s,s=function(e,t,r){var o=c.apply(this,[e]);return r?(o.then(t,r),Promise.resolve()):o},t.addIceCandidate=s}}function c(e){var t=e&&e.navigator;if(t.mediaDevices&&t.mediaDevices.getUserMedia){var r=t.mediaDevices,o=r.getUserMedia.bind(r);t.mediaDevices.getUserMedia=function(e){return o(s(e))}}!t.getUserMedia&&t.mediaDevices&&t.mediaDevices.getUserMedia&&(t.getUserMedia=function(e,r,o){t.mediaDevices.getUserMedia(e).then(r,o)}.bind(t))}function s(t){return t&&void 0!==t.video?Object.assign({},t,{video:e.compactObject(t.video)}):t}function d(t){if(t.RTCPeerConnection){var r=t.RTCPeerConnection;t.RTCPeerConnection=function(t,o){if(t&&t.iceServers){for(var n=[],i=0;i<t.iceServers.length;i++){var a=t.iceServers[i];!a.hasOwnProperty("urls")&&a.hasOwnProperty("url")?(e.deprecated("RTCIceServer.url","RTCIceServer.urls"),(a=JSON.parse(JSON.stringify(a))).urls=a.url,delete a.url,n.push(a)):n.push(t.iceServers[i])}t.iceServers=n}return new r(t,o)},t.RTCPeerConnection.prototype=r.prototype,"generateCertificate"in r&&Object.defineProperty(t.RTCPeerConnection,"generateCertificate",{get:function(){return r.generateCertificate}})}}function f(e){"object"===o(e)&&e.RTCTrackEvent&&"receiver"in e.RTCTrackEvent.prototype&&!("transceiver"in e.RTCTrackEvent.prototype)&&Object.defineProperty(e.RTCTrackEvent.prototype,"transceiver",{get:function(){return{receiver:this.receiver}}})}function p(e){var t=e.RTCPeerConnection.prototype.createOffer;e.RTCPeerConnection.prototype.createOffer=function(e){if(e){void 0!==e.offerToReceiveAudio&&(e.offerToReceiveAudio=!!e.offerToReceiveAudio);var r=this.getTransceivers().find(function(e){return"audio"===e.receiver.track.kind});!1===e.offerToReceiveAudio&&r?"sendrecv"===r.direction?r.setDirection?r.setDirection("sendonly"):r.direction="sendonly":"recvonly"===r.direction&&(r.setDirection?r.setDirection("inactive"):r.direction="inactive"):!0!==e.offerToReceiveAudio||r||this.addTransceiver("audio"),void 0!==e.offerToReceiveVideo&&(e.offerToReceiveVideo=!!e.offerToReceiveVideo);var o=this.getTransceivers().find(function(e){return"video"===e.receiver.track.kind});!1===e.offerToReceiveVideo&&o?"sendrecv"===o.direction?o.setDirection?o.setDirection("sendonly"):o.direction="sendonly":"recvonly"===o.direction&&(o.setDirection?o.setDirection("inactive"):o.direction="inactive"):!0!==e.offerToReceiveVideo||o||this.addTransceiver("video")}return t.apply(this,arguments)}}function u(e){"object"!==o(e)||e.AudioContext||(e.AudioContext=e.webkitAudioContext)}
},{"../utils":"iSxC"}],"GOQK":[function(require,module,exports) {
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t.RTCPeerConnection.prototype||Object.defineProperty(t.RTCPeerConnection.prototype,"sctp",{get:function(){return void 0===this._sctp?null:this._sctp}});var o=t.RTCPeerConnection.prototype.setRemoteDescription;t.RTCPeerConnection.prototype.setRemoteDescription=function(){if(this._sctp=null,"chrome"===n.browser&&n.version>=76){var{sdpSemantics:t}=this.getConfiguration();"plan-b"===t&&Object.defineProperty(this,"sctp",{get:function(){return void 0===this._sctp?null:this._sctp},enumerable:!0,configurable:!0})}if(function(t){if(!t||!t.sdp)return!1;var n=e.default.splitSections(t.sdp);return n.shift(),n.some(function(t){var n=e.default.parseMLine(t);return n&&"application"===n.kind&&-1!==n.protocol.indexOf("SCTP")})}(arguments[0])){var r,i=function(e){var t=e.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);if(null===t||t.length<2)return-1;var n=parseInt(t[1],10);return n!=n?-1:n}(arguments[0]),a=(p=i,d=65536,"firefox"===n.browser&&(d=n.version<57?-1===p?16384:2147483637:n.version<60?57===n.version?65535:65536:2147483637),d),c=function(t,o){var r=65536;"firefox"===n.browser&&57===n.version&&(r=65535);var i=e.default.matchPrefix(t.sdp,"a=max-message-size:");return i.length>0?r=parseInt(i[0].substr(19),10):"firefox"===n.browser&&-1!==o&&(r=2147483637),r}(arguments[0],i);r=0===a&&0===c?Number.POSITIVE_INFINITY:0===a||0===c?Math.max(a,c):Math.min(a,c);var s={};Object.defineProperty(s,"maxMessageSize",{get:function(){return r}}),this._sctp=s}var p,d;return o.apply(this,arguments)}}}function s(e){if(e.RTCPeerConnection&&"createDataChannel"in e.RTCPeerConnection.prototype){var n=e.RTCPeerConnection.prototype.createDataChannel;e.RTCPeerConnection.prototype.createDataChannel=function(){var e=n.apply(this,arguments);return o(e,this),e},t.wrapPeerConnectionEvent(e,"datachannel",function(e){return o(e.channel,e.target),e})}function o(e,t){var n=e.send;e.send=function(){var o=arguments[0],r=o.length||o.size||o.byteLength;if("open"===e.readyState&&t.sctp&&r>t.sctp.maxMessageSize)throw new TypeError("Message too large (can send a maximum of "+t.sctp.maxMessageSize+" bytes)");return n.apply(e,arguments)}}}function p(e){if(e.RTCPeerConnection&&!("connectionState"in e.RTCPeerConnection.prototype)){var t=e.RTCPeerConnection.prototype;Object.defineProperty(t,"connectionState",{get:function(){return{completed:"connected",checking:"connecting"}[this.iceConnectionState]||this.iceConnectionState},enumerable:!0,configurable:!0}),Object.defineProperty(t,"onconnectionstatechange",{get:function(){return this._onconnectionstatechange||null},set:function(e){this._onconnectionstatechange&&(this.removeEventListener("connectionstatechange",this._onconnectionstatechange),delete this._onconnectionstatechange),e&&this.addEventListener("connectionstatechange",this._onconnectionstatechange=e)},enumerable:!0,configurable:!0}),["setLocalDescription","setRemoteDescription"].forEach(function(e){var n=t[e];t[e]=function(){return this._connectionstatechangepoly||(this._connectionstatechangepoly=function(e){var t=e.target;if(t._lastConnectionState!==t.connectionState){t._lastConnectionState=t.connectionState;var n=new Event("connectionstatechange",e);t.dispatchEvent(n)}return e},this.addEventListener("iceconnectionstatechange",this._connectionstatechangepoly)),n.apply(this,arguments)}})}}function d(e,t){if(e.RTCPeerConnection&&!("chrome"===t.browser&&t.version>=71||"safari"===t.browser&&t.version>=605)){var n=e.RTCPeerConnection.prototype.setRemoteDescription;e.RTCPeerConnection.prototype.setRemoteDescription=function(t){if(t&&t.sdp&&-1!==t.sdp.indexOf("\na=extmap-allow-mixed")){var o=t.sdp.split("\n").filter(function(e){return"a=extmap-allow-mixed"!==e.trim()}).join("\n");e.RTCSessionDescription&&t instanceof e.RTCSessionDescription?arguments[0]=new e.RTCSessionDescription({type:t.type,sdp:o}):t.sdp=o}return n.apply(this,arguments)}}}function u(e,t){if(e.RTCPeerConnection&&e.RTCPeerConnection.prototype){var n=e.RTCPeerConnection.prototype.addIceCandidate;n&&0!==n.length&&(e.RTCPeerConnection.prototype.addIceCandidate=function(){return arguments[0]?("chrome"===t.browser&&t.version<78||"firefox"===t.browser&&t.version<68||"safari"===t.browser)&&arguments[0]&&""===arguments[0].candidate?Promise.resolve():n.apply(this,arguments):(arguments[1]&&arguments[1].apply(null),Promise.resolve())})}}
},{"sdp":"YHvh","./utils":"iSxC"}],"KtlG":[function(require,module,exports) {
"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.adapterFactory=o;var e=m(require("./utils")),i=m(require("./chrome/chrome_shim")),r=m(require("./edge/edge_shim")),s=m(require("./firefox/firefox_shim")),t=m(require("./safari/safari_shim")),a=m(require("./common_shim"));function n(){if("function"!=typeof WeakMap)return null;var e=new WeakMap;return n=function(){return e},e}function m(e){if(e&&e.__esModule)return e;if(null===e||"object"!=typeof e&&"function"!=typeof e)return{default:e};var i=n();if(i&&i.has(e))return i.get(e);var r={},s=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(var t in e)if(Object.prototype.hasOwnProperty.call(e,t)){var a=s?Object.getOwnPropertyDescriptor(e,t):null;a&&(a.get||a.set)?Object.defineProperty(r,t,a):r[t]=e[t]}return r.default=e,i&&i.set(e,r),r}function o(){var{window:n}=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},m=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{shimChrome:!0,shimFirefox:!0,shimEdge:!0,shimSafari:!0},o=e.log,h=e.detectBrowser(n),d={browserDetails:h,commonShim:a,extractVersion:e.extractVersion,disableLog:e.disableLog,disableWarnings:e.disableWarnings};switch(h.browser){case"chrome":if(!i||!i.shimPeerConnection||!m.shimChrome)return o("Chrome shim is not included in this adapter release."),d;if(null===h.version)return o("Chrome shim can not determine version, not shimming."),d;o("adapter.js shimming chrome."),d.browserShim=i,a.shimAddIceCandidateNullOrEmpty(n,h),i.shimGetUserMedia(n,h),i.shimMediaStream(n,h),i.shimPeerConnection(n,h),i.shimOnTrack(n,h),i.shimAddTrackRemoveTrack(n,h),i.shimGetSendersWithDtmf(n,h),i.shimGetStats(n,h),i.shimSenderReceiverGetStats(n,h),i.fixNegotiationNeeded(n,h),a.shimRTCIceCandidate(n,h),a.shimConnectionState(n,h),a.shimMaxMessageSize(n,h),a.shimSendThrowTypeError(n,h),a.removeExtmapAllowMixed(n,h);break;case"firefox":if(!s||!s.shimPeerConnection||!m.shimFirefox)return o("Firefox shim is not included in this adapter release."),d;o("adapter.js shimming firefox."),d.browserShim=s,a.shimAddIceCandidateNullOrEmpty(n,h),s.shimGetUserMedia(n,h),s.shimPeerConnection(n,h),s.shimOnTrack(n,h),s.shimRemoveStream(n,h),s.shimSenderGetStats(n,h),s.shimReceiverGetStats(n,h),s.shimRTCDataChannel(n,h),s.shimAddTransceiver(n,h),s.shimGetParameters(n,h),s.shimCreateOffer(n,h),s.shimCreateAnswer(n,h),a.shimRTCIceCandidate(n,h),a.shimConnectionState(n,h),a.shimMaxMessageSize(n,h),a.shimSendThrowTypeError(n,h);break;case"edge":if(!r||!r.shimPeerConnection||!m.shimEdge)return o("MS edge shim is not included in this adapter release."),d;o("adapter.js shimming edge."),d.browserShim=r,r.shimGetUserMedia(n,h),r.shimGetDisplayMedia(n,h),r.shimPeerConnection(n,h),r.shimReplaceTrack(n,h),a.shimMaxMessageSize(n,h),a.shimSendThrowTypeError(n,h);break;case"safari":if(!t||!m.shimSafari)return o("Safari shim is not included in this adapter release."),d;o("adapter.js shimming safari."),d.browserShim=t,a.shimAddIceCandidateNullOrEmpty(n,h),t.shimRTCIceServerUrls(n,h),t.shimCreateOfferLegacy(n,h),t.shimCallbacksAPI(n,h),t.shimLocalStreamsAPI(n,h),t.shimRemoteStreamsAPI(n,h),t.shimTrackEventTransceiver(n,h),t.shimGetUserMedia(n,h),t.shimAudioContext(n,h),a.shimRTCIceCandidate(n,h),a.shimMaxMessageSize(n,h),a.shimSendThrowTypeError(n,h),a.removeExtmapAllowMixed(n,h);break;default:o("Unsupported browser!")}return d}
},{"./utils":"iSxC","./chrome/chrome_shim":"uI5X","./edge/edge_shim":"XRic","./firefox/firefox_shim":"Fzdr","./safari/safari_shim":"t1lL","./common_shim":"GOQK"}],"tI1X":[function(require,module,exports) {
"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.default=void 0;var e=require("./adapter_factory.js"),t=(0,e.adapterFactory)({window:"undefined"==typeof window?void 0:window}),d=t;exports.default=d;
},{"./adapter_factory.js":"KtlG"}],"sXtV":[function(require,module,exports) {
"use strict";var e=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.webRTCAdapter=void 0;var t=e(require("webrtc-adapter"));exports.webRTCAdapter=t.default;
},{"webrtc-adapter":"tI1X"}],"I31f":[function(require,module,exports) {
"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.Supports=void 0;var r=require("./adapter");exports.Supports=new(function(){function e(){this.isIOS=["iPad","iPhone","iPod"].includes(navigator.platform),this.supportedBrowsers=["firefox","chrome","safari"],this.minFirefoxVersion=59,this.minChromeVersion=72,this.minSafariVersion=605}return e.prototype.isWebRTCSupported=function(){return"undefined"!=typeof RTCPeerConnection},e.prototype.isBrowserSupported=function(){var r=this.getBrowser(),e=this.getVersion();return!!this.supportedBrowsers.includes(r)&&("chrome"===r?e>=this.minChromeVersion:"firefox"===r?e>=this.minFirefoxVersion:"safari"===r&&(!this.isIOS&&e>=this.minSafariVersion))},e.prototype.getBrowser=function(){return r.webRTCAdapter.browserDetails.browser},e.prototype.getVersion=function(){return r.webRTCAdapter.browserDetails.version||0},e.prototype.isUnifiedPlanSupported=function(){var e,i=this.getBrowser(),t=r.webRTCAdapter.browserDetails.version||0;if("chrome"===i&&t<72)return!1;if("firefox"===i&&t>=59)return!0;if(!(window.RTCRtpTransceiver&&"currentDirection"in RTCRtpTransceiver.prototype))return!1;var o=!1;try{(e=new RTCPeerConnection).addTransceiver("audio"),o=!0}catch(s){}finally{e&&e.close()}return o},e.prototype.toString=function(){return"Supports: \n    browser:"+this.getBrowser()+" \n    version:"+this.getVersion()+" \n    isIOS:"+this.isIOS+" \n    isWebRTCSupported:"+this.isWebRTCSupported()+" \n    isBrowserSupported:"+this.isBrowserSupported()+" \n    isUnifiedPlanSupported:"+this.isUnifiedPlanSupported()},e}());
},{"./adapter":"sXtV"}],"BHXf":[function(require,module,exports) {
"use strict";var e=this&&this.__createBinding||(Object.create?function(e,t,r,o){void 0===o&&(o=r),Object.defineProperty(e,o,{enumerable:!0,get:function(){return t[r]}})}:function(e,t,r,o){void 0===o&&(o=r),e[o]=t[r]}),t=this&&this.__setModuleDefault||(Object.create?function(e,t){Object.defineProperty(e,"default",{enumerable:!0,value:t})}:function(e,t){e.default=t}),r=this&&this.__importStar||function(r){if(r&&r.__esModule)return r;var o={};if(null!=r)for(var n in r)"default"!==n&&Object.prototype.hasOwnProperty.call(r,n)&&e(o,r,n);return t(o,r),o};Object.defineProperty(exports,"__esModule",{value:!0}),exports.util=void 0;var o=r(require("peerjs-js-binarypack")),n=require("./supports"),i={iceServers:[{urls:"stun:stun.l.google.com:19302"},{urls:"turn:0.peerjs.com:3478",username:"peerjs",credential:"peerjsp"}],sdpSemantics:"unified-plan"};exports.util=new(function(){function e(){this.CLOUD_HOST="0.peerjs.com",this.CLOUD_PORT=443,this.chunkedBrowsers={Chrome:1,chrome:1},this.chunkedMTU=16300,this.defaultConfig=i,this.browser=n.Supports.getBrowser(),this.browserVersion=n.Supports.getVersion(),this.supports=function(){var e,t={browser:n.Supports.isBrowserSupported(),webRTC:n.Supports.isWebRTCSupported(),audioVideo:!1,data:!1,binaryBlob:!1,reliable:!1};if(!t.webRTC)return t;try{e=new RTCPeerConnection(i),t.audioVideo=!0;var r=void 0;try{r=e.createDataChannel("_PEERJSTEST",{ordered:!0}),t.data=!0,t.reliable=!!r.ordered;try{r.binaryType="blob",t.binaryBlob=!n.Supports.isIOS}catch(o){}}catch(o){}finally{r&&r.close()}}catch(o){}finally{e&&e.close()}return t}(),this.pack=o.pack,this.unpack=o.unpack,this._dataCount=1}return e.prototype.noop=function(){},e.prototype.validateId=function(e){return!e||/^[A-Za-z0-9]+(?:[ _-][A-Za-z0-9]+)*$/.test(e)},e.prototype.chunk=function(e){for(var t=[],r=e.size,o=Math.ceil(r/exports.util.chunkedMTU),n=0,i=0;i<r;){var a=Math.min(r,i+exports.util.chunkedMTU),u=e.slice(i,a),s={__peerData:this._dataCount,n:n,data:u,total:o};t.push(s),i=a,n++}return this._dataCount++,t},e.prototype.blobToArrayBuffer=function(e,t){var r=new FileReader;return r.onload=function(e){e.target&&t(e.target.result)},r.readAsArrayBuffer(e),r},e.prototype.binaryStringToArrayBuffer=function(e){for(var t=new Uint8Array(e.length),r=0;r<e.length;r++)t[r]=255&e.charCodeAt(r);return t.buffer},e.prototype.randomToken=function(){return Math.random().toString(36).substr(2)},e.prototype.isSecure=function(){return"https:"===location.protocol},e}());
},{"peerjs-js-binarypack":"kdPp","./supports":"I31f"}],"JJlS":[function(require,module,exports) {
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},{}],"WOs9":[function(require,module,exports) {
"use strict";var r=this&&this.__read||function(r,e){var o="function"==typeof Symbol&&r[Symbol.iterator];if(!o)return r;var t,n,l=o.call(r),i=[];try{for(;(void 0===e||e-- >0)&&!(t=l.next()).done;)i.push(t.value)}catch(s){n={error:s}}finally{try{t&&!t.done&&(o=l.return)&&o.call(l)}finally{if(n)throw n.error}}return i},e=this&&this.__spreadArray||function(r,e){for(var o=0,t=e.length,n=r.length;o<t;o++,n++)r[n]=e[o];return r};Object.defineProperty(exports,"__esModule",{value:!0}),exports.LogLevel=void 0;var o,t="PeerJS: ";!function(r){r[r.Disabled=0]="Disabled",r[r.Errors=1]="Errors",r[r.Warnings=2]="Warnings",r[r.All=3]="All"}(o=exports.LogLevel||(exports.LogLevel={}));var n=function(){function n(){this._logLevel=o.Disabled}return Object.defineProperty(n.prototype,"logLevel",{get:function(){return this._logLevel},set:function(r){this._logLevel=r},enumerable:!1,configurable:!0}),n.prototype.log=function(){for(var t=[],n=0;n<arguments.length;n++)t[n]=arguments[n];this._logLevel>=o.All&&this._print.apply(this,e([o.All],r(t)))},n.prototype.warn=function(){for(var t=[],n=0;n<arguments.length;n++)t[n]=arguments[n];this._logLevel>=o.Warnings&&this._print.apply(this,e([o.Warnings],r(t)))},n.prototype.error=function(){for(var t=[],n=0;n<arguments.length;n++)t[n]=arguments[n];this._logLevel>=o.Errors&&this._print.apply(this,e([o.Errors],r(t)))},n.prototype.setLogFunction=function(r){this._print=r},n.prototype._print=function(n){for(var l=[],i=1;i<arguments.length;i++)l[i-1]=arguments[i];var s=e([t],r(l));for(var a in s)s[a]instanceof Error&&(s[a]="("+s[a].name+") "+s[a].message);n>=o.All?console.log.apply(console,e([],r(s))):n>=o.Warnings?console.warn.apply(console,e(["WARNING"],r(s))):n>=o.Errors&&console.error.apply(console,e(["ERROR"],r(s)))},n}();exports.default=new n;
},{}],"ZRYf":[function(require,module,exports) {
"use strict";var e,r,o,n,t,a,i;Object.defineProperty(exports,"__esModule",{value:!0}),exports.ServerMessageType=exports.SocketEventType=exports.SerializationType=exports.PeerErrorType=exports.PeerEventType=exports.ConnectionType=exports.ConnectionEventType=void 0,function(e){e.Open="open",e.Stream="stream",e.Data="data",e.Close="close",e.Error="error",e.IceStateChanged="iceStateChanged"}(e=exports.ConnectionEventType||(exports.ConnectionEventType={})),function(e){e.Data="data",e.Media="media"}(r=exports.ConnectionType||(exports.ConnectionType={})),function(e){e.Open="open",e.Close="close",e.Connection="connection",e.Call="call",e.Disconnected="disconnected",e.Error="error"}(o=exports.PeerEventType||(exports.PeerEventType={})),function(e){e.BrowserIncompatible="browser-incompatible",e.Disconnected="disconnected",e.InvalidID="invalid-id",e.InvalidKey="invalid-key",e.Network="network",e.PeerUnavailable="peer-unavailable",e.SslUnavailable="ssl-unavailable",e.ServerError="server-error",e.SocketError="socket-error",e.SocketClosed="socket-closed",e.UnavailableID="unavailable-id",e.WebRTC="webrtc"}(n=exports.PeerErrorType||(exports.PeerErrorType={})),function(e){e.Binary="binary",e.BinaryUTF8="binary-utf8",e.JSON="json"}(t=exports.SerializationType||(exports.SerializationType={})),function(e){e.Message="message",e.Disconnected="disconnected",e.Error="error",e.Close="close"}(a=exports.SocketEventType||(exports.SocketEventType={})),function(e){e.Heartbeat="HEARTBEAT",e.Candidate="CANDIDATE",e.Offer="OFFER",e.Answer="ANSWER",e.Open="OPEN",e.Error="ERROR",e.IdTaken="ID-TAKEN",e.InvalidKey="INVALID-KEY",e.Leave="LEAVE",e.Expire="EXPIRE"}(i=exports.ServerMessageType||(exports.ServerMessageType={}));
},{}],"wJlv":[function(require,module,exports) {
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},{"eventemitter3":"JJlS","./logger":"WOs9","./enums":"ZRYf"}],"HCdX":[function(require,module,exports) {
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o(e){this.connection=e}return o.prototype.startConnection=function(e){var n=this._startPeerConnection();if(this.connection.peerConnection=n,this.connection.type===c.ConnectionType.Media&&e._stream&&this._addTracksToConnection(e._stream,n),e.originator){if(this.connection.type===c.ConnectionType.Data){var t=this.connection,o={ordered:!!e.reliable},i=n.createDataChannel(t.label,o);t.initialize(i)}this._makeOffer()}else this.handleSDP("OFFER",e.sdp)},o.prototype._startPeerConnection=function(){r.default.log("Creating RTCPeerConnection.");var e=new RTCPeerConnection(this.connection.provider.options.config);return this._setupListeners(e),e},o.prototype._setupListeners=function(e){var n=this,t=this.connection.peer,o=this.connection.connectionId,a=this.connection.type,s=this.connection.provider;r.default.log("Listening for ICE candidates."),e.onicecandidate=function(e){e.candidate&&e.candidate.candidate&&(r.default.log("Received ICE candidates for "+t+":",e.candidate),s.socket.send({type:c.ServerMessageType.Candidate,payload:{candidate:e.candidate,type:a,connectionId:o},dst:t}))},e.oniceconnectionstatechange=function(){switch(e.iceConnectionState){case"failed":r.default.log("iceConnectionState is failed, closing connections to "+t),n.connection.emit(c.ConnectionEventType.Error,new Error("Negotiation of connection to "+t+" failed.")),n.connection.close();break;case"closed":r.default.log("iceConnectionState is closed, closing connections to "+t),n.connection.emit(c.ConnectionEventType.Error,new Error("Connection to "+t+" closed.")),n.connection.close();break;case"disconnected":r.default.log("iceConnectionState changed to disconnected on the connection with "+t);break;case"completed":e.onicecandidate=i.util.noop}n.connection.emit(c.ConnectionEventType.IceStateChanged,e.iceConnectionState)},r.default.log("Listening for data channel"),e.ondatachannel=function(e){r.default.log("Received data channel");var n=e.channel;s.getConnection(t,o).initialize(n)},r.default.log("Listening for remote stream"),e.ontrack=function(e){r.default.log("Received remote stream");var i=e.streams[0],a=s.getConnection(t,o);if(a.type===c.ConnectionType.Media){var d=a;n._addStreamToMediaConnection(i,d)}}},o.prototype.cleanup=function(){r.default.log("Cleaning up PeerConnection to "+this.connection.peer);var e=this.connection.peerConnection;if(e){this.connection.peerConnection=null,e.onicecandidate=e.oniceconnectionstatechange=e.ondatachannel=e.ontrack=function(){};var n="closed"!==e.signalingState,t=!1;if(this.connection.type===c.ConnectionType.Data){var o=this.connection.dataChannel;o&&(t=!!o.readyState&&"closed"!==o.readyState)}(n||t)&&e.close()}},o.prototype._makeOffer=function(){return n(this,void 0,Promise,function(){var n,o,a,s,d,l,u;return t(this,function(t){switch(t.label){case 0:n=this.connection.peerConnection,o=this.connection.provider,t.label=1;case 1:return t.trys.push([1,7,,8]),[4,n.createOffer(this.connection.options.constraints)];case 2:a=t.sent(),r.default.log("Created offer."),this.connection.options.sdpTransform&&"function"==typeof this.connection.options.sdpTransform&&(a.sdp=this.connection.options.sdpTransform(a.sdp)||a.sdp),t.label=3;case 3:return t.trys.push([3,5,,6]),[4,n.setLocalDescription(a)];case 4:return t.sent(),r.default.log("Set localDescription:",a,"for:"+this.connection.peer),s={sdp:a,type:this.connection.type,connectionId:this.connection.connectionId,metadata:this.connection.metadata,browser:i.util.browser},this.connection.type===c.ConnectionType.Data&&(d=this.connection,s=e(e({},s),{label:d.label,reliable:d.reliable,serialization:d.serialization})),o.socket.send({type:c.ServerMessageType.Offer,payload:s,dst:this.connection.peer}),[3,6];case 5:return"OperationError: Failed to set local offer sdp: Called in wrong state: kHaveRemoteOffer"!=(l=t.sent())&&(o.emitError(c.PeerErrorType.WebRTC,l),r.default.log("Failed to setLocalDescription, ",l)),[3,6];case 6:return[3,8];case 7:return u=t.sent(),o.emitError(c.PeerErrorType.WebRTC,u),r.default.log("Failed to createOffer, ",u),[3,8];case 8:return[2]}})})},o.prototype._makeAnswer=function(){return n(this,void 0,Promise,function(){var e,n,o,a,s;return t(this,function(t){switch(t.label){case 0:e=this.connection.peerConnection,n=this.connection.provider,t.label=1;case 1:return t.trys.push([1,7,,8]),[4,e.createAnswer()];case 2:o=t.sent(),r.default.log("Created answer."),this.connection.options.sdpTransform&&"function"==typeof this.connection.options.sdpTransform&&(o.sdp=this.connection.options.sdpTransform(o.sdp)||o.sdp),t.label=3;case 3:return t.trys.push([3,5,,6]),[4,e.setLocalDescription(o)];case 4:return t.sent(),r.default.log("Set localDescription:",o,"for:"+this.connection.peer),n.socket.send({type:c.ServerMessageType.Answer,payload:{sdp:o,type:this.connection.type,connectionId:this.connection.connectionId,browser:i.util.browser},dst:this.connection.peer}),[3,6];case 5:return a=t.sent(),n.emitError(c.PeerErrorType.WebRTC,a),r.default.log("Failed to setLocalDescription, ",a),[3,6];case 6:return[3,8];case 7:return s=t.sent(),n.emitError(c.PeerErrorType.WebRTC,s),r.default.log("Failed to create answer, ",s),[3,8];case 8:return[2]}})})},o.prototype.handleSDP=function(e,o){return n(this,void 0,Promise,function(){var n,i,a,s;return t(this,function(t){switch(t.label){case 0:o=new RTCSessionDescription(o),n=this.connection.peerConnection,i=this.connection.provider,r.default.log("Setting remote description",o),a=this,t.label=1;case 1:return t.trys.push([1,5,,6]),[4,n.setRemoteDescription(o)];case 2:return t.sent(),r.default.log("Set remoteDescription:"+e+" for:"+this.connection.peer),"OFFER"!==e?[3,4]:[4,a._makeAnswer()];case 3:t.sent(),t.label=4;case 4:return[3,6];case 5:return s=t.sent(),i.emitError(c.PeerErrorType.WebRTC,s),r.default.log("Failed to setRemoteDescription, ",s),[3,6];case 6:return[2]}})})},o.prototype.handleCandidate=function(e){return n(this,void 0,Promise,function(){var n,o,i,a,s,d;return t(this,function(t){switch(t.label){case 0:r.default.log("handleCandidate:",e),n=e.candidate,o=e.sdpMLineIndex,i=e.sdpMid,a=this.connection.peerConnection,s=this.connection.provider,t.label=1;case 1:return t.trys.push([1,3,,4]),[4,a.addIceCandidate(new RTCIceCandidate({sdpMid:i,sdpMLineIndex:o,candidate:n}))];case 2:return t.sent(),r.default.log("Added ICE candidate for:"+this.connection.peer),[3,4];case 3:return d=t.sent(),s.emitError(c.PeerErrorType.WebRTC,d),r.default.log("Failed to handleCandidate, ",d),[3,4];case 4:return[2]}})})},o.prototype._addTracksToConnection=function(e,n){if(r.default.log("add tracks from stream "+e.id+" to peer connection"),!n.addTrack)return r.default.error("Your browser does't support RTCPeerConnection#addTrack. Ignored.");e.getTracks().forEach(function(t){n.addTrack(t,e)})},o.prototype._addStreamToMediaConnection=function(e,n){r.default.log("add stream "+e.id+" to media connection "+n.connectionId),n.addStream(e)},o}();exports.Negotiator=a;
},{"./util":"BHXf","./logger":"WOs9","./enums":"ZRYf"}],"tQFK":[function(require,module,exports) {
"use strict";var t=this&&this.__extends||function(){var t=function(e,n){return(t=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var n in e)Object.prototype.hasOwnProperty.call(e,n)&&(t[n]=e[n])})(e,n)};return function(e,n){if("function"!=typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function o(){this.constructor=e}t(e,n),e.prototype=null===n?Object.create(n):(o.prototype=n.prototype,new o)}}();Object.defineProperty(exports,"__esModule",{value:!0}),exports.BaseConnection=void 0;var e=require("eventemitter3"),n=function(e){function n(t,n,o){var r=e.call(this)||this;return r.peer=t,r.provider=n,r.options=o,r._open=!1,r.metadata=o.metadata,r}return t(n,e),Object.defineProperty(n.prototype,"open",{get:function(){return this._open},enumerable:!1,configurable:!0}),n}(e.EventEmitter);exports.BaseConnection=n;
},{"eventemitter3":"JJlS"}],"dbHP":[function(require,module,exports) {
"use strict";var e=this&&this.__extends||function(){var e=function(t,o){return(e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var o in t)Object.prototype.hasOwnProperty.call(t,o)&&(e[o]=t[o])})(t,o)};return function(t,o){if("function"!=typeof o&&null!==o)throw new TypeError("Class extends value "+String(o)+" is not a constructor or null");function r(){this.constructor=t}e(t,o),t.prototype=null===o?Object.create(o):(r.prototype=o.prototype,new r)}}(),t=this&&this.__assign||function(){return(t=Object.assign||function(e){for(var t,o=1,r=arguments.length;o<r;o++)for(var n in t=arguments[o])Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n]);return e}).apply(this,arguments)},o=this&&this.__values||function(e){var t="function"==typeof Symbol&&Symbol.iterator,o=t&&e[t],r=0;if(o)return o.call(e);if(e&&"number"==typeof e.length)return{next:function(){return e&&r>=e.length&&(e=void 0),{value:e&&e[r++],done:!e}}};throw new TypeError(t?"Object is not iterable.":"Symbol.iterator is not defined.")},r=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.MediaConnection=void 0;var n=require("./util"),i=r(require("./logger")),a=require("./negotiator"),s=require("./enums"),l=require("./baseconnection"),c=function(r){function l(e,t,o){var i=r.call(this,e,t,o)||this;return i._localStream=i.options._stream,i.connectionId=i.options.connectionId||l.ID_PREFIX+n.util.randomToken(),i._negotiator=new a.Negotiator(i),i._localStream&&i._negotiator.startConnection({_stream:i._localStream,originator:!0}),i}return e(l,r),Object.defineProperty(l.prototype,"type",{get:function(){return s.ConnectionType.Media},enumerable:!1,configurable:!0}),Object.defineProperty(l.prototype,"localStream",{get:function(){return this._localStream},enumerable:!1,configurable:!0}),Object.defineProperty(l.prototype,"remoteStream",{get:function(){return this._remoteStream},enumerable:!1,configurable:!0}),l.prototype.addStream=function(e){i.default.log("Receiving stream",e),this._remoteStream=e,r.prototype.emit.call(this,s.ConnectionEventType.Stream,e)},l.prototype.handleMessage=function(e){var t=e.type,o=e.payload;switch(e.type){case s.ServerMessageType.Answer:this._negotiator.handleSDP(t,o.sdp),this._open=!0;break;case s.ServerMessageType.Candidate:this._negotiator.handleCandidate(o.candidate);break;default:i.default.warn("Unrecognized message type:"+t+" from peer:"+this.peer)}},l.prototype.answer=function(e,r){var n,a;if(void 0===r&&(r={}),this._localStream)i.default.warn("Local stream already exists on this MediaConnection. Are you answering a call twice?");else{this._localStream=e,r&&r.sdpTransform&&(this.options.sdpTransform=r.sdpTransform),this._negotiator.startConnection(t(t({},this.options._payload),{_stream:e}));var s=this.provider._getMessages(this.connectionId);try{for(var l=o(s),c=l.next();!c.done;c=l.next()){var p=c.value;this.handleMessage(p)}}catch(u){n={error:u}}finally{try{c&&!c.done&&(a=l.return)&&a.call(l)}finally{if(n)throw n.error}}this._open=!0}},l.prototype.close=function(){this._negotiator&&(this._negotiator.cleanup(),this._negotiator=null),this._localStream=null,this._remoteStream=null,this.provider&&(this.provider._removeConnection(this),this.provider=null),this.options&&this.options._stream&&(this.options._stream=null),this.open&&(this._open=!1,r.prototype.emit.call(this,s.ConnectionEventType.Close))},l.ID_PREFIX="mc_",l}(l.BaseConnection);exports.MediaConnection=c;
},{"./util":"BHXf","./logger":"WOs9","./negotiator":"HCdX","./enums":"ZRYf","./baseconnection":"tQFK"}],"GGp6":[function(require,module,exports) {
"use strict";var e=this&&this.__extends||function(){var e=function(t,r){return(e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var r in t)Object.prototype.hasOwnProperty.call(t,r)&&(e[r]=t[r])})(t,r)};return function(t,r){if("function"!=typeof r&&null!==r)throw new TypeError("Class extends value "+String(r)+" is not a constructor or null");function o(){this.constructor=t}e(t,r),t.prototype=null===r?Object.create(r):(o.prototype=r.prototype,new o)}}(),t=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.EncodingQueue=void 0;var r=require("eventemitter3"),o=t(require("./logger")),n=function(t){function r(){var e=t.call(this)||this;return e.fileReader=new FileReader,e._queue=[],e._processing=!1,e.fileReader.onload=function(t){e._processing=!1,t.target&&e.emit("done",t.target.result),e.doNextTask()},e.fileReader.onerror=function(t){o.default.error("EncodingQueue error:",t),e._processing=!1,e.destroy(),e.emit("error",t)},e}return e(r,t),Object.defineProperty(r.prototype,"queue",{get:function(){return this._queue},enumerable:!1,configurable:!0}),Object.defineProperty(r.prototype,"size",{get:function(){return this.queue.length},enumerable:!1,configurable:!0}),Object.defineProperty(r.prototype,"processing",{get:function(){return this._processing},enumerable:!1,configurable:!0}),r.prototype.enque=function(e){this.queue.push(e),this.processing||this.doNextTask()},r.prototype.destroy=function(){this.fileReader.abort(),this._queue=[]},r.prototype.doNextTask=function(){0!==this.size&&(this.processing||(this._processing=!0,this.fileReader.readAsArrayBuffer(this.queue.shift())))},r}(r.EventEmitter);exports.EncodingQueue=n;
},{"eventemitter3":"JJlS","./logger":"WOs9"}],"GBTQ":[function(require,module,exports) {
"use strict";var e=this&&this.__extends||function(){var e=function(t,n){return(e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n])})(t,n)};return function(t,n){if("function"!=typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function i(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(i.prototype=n.prototype,new i)}}(),t=this&&this.__values||function(e){var t="function"==typeof Symbol&&Symbol.iterator,n=t&&e[t],i=0;if(n)return n.call(e);if(e&&"number"==typeof e.length)return{next:function(){return e&&i>=e.length&&(e=void 0),{value:e&&e[i++],done:!e}}};throw new TypeError(t?"Object is not iterable.":"Symbol.iterator is not defined.")},n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.DataConnection=void 0;var i=require("./util"),o=n(require("./logger")),r=require("./negotiator"),a=require("./enums"),s=require("./baseconnection"),u=require("./encodingQueue"),l=function(n){function s(e,t,l){var f=n.call(this,e,t,l)||this;return f.stringify=JSON.stringify,f.parse=JSON.parse,f._buffer=[],f._bufferSize=0,f._buffering=!1,f._chunkedData={},f._encodingQueue=new u.EncodingQueue,f.connectionId=f.options.connectionId||s.ID_PREFIX+i.util.randomToken(),f.label=f.options.label||f.connectionId,f.serialization=f.options.serialization||a.SerializationType.Binary,f.reliable=!!f.options.reliable,f._encodingQueue.on("done",function(e){f._bufferedSend(e)}),f._encodingQueue.on("error",function(){o.default.error("DC#"+f.connectionId+": Error occured in encoding from blob to arraybuffer, close DC"),f.close()}),f._negotiator=new r.Negotiator(f),f._negotiator.startConnection(f.options._payload||{originator:!0}),f}return e(s,n),Object.defineProperty(s.prototype,"type",{get:function(){return a.ConnectionType.Data},enumerable:!1,configurable:!0}),Object.defineProperty(s.prototype,"dataChannel",{get:function(){return this._dc},enumerable:!1,configurable:!0}),Object.defineProperty(s.prototype,"bufferSize",{get:function(){return this._bufferSize},enumerable:!1,configurable:!0}),s.prototype.initialize=function(e){this._dc=e,this._configureDataChannel()},s.prototype._configureDataChannel=function(){var e=this;i.util.supports.binaryBlob&&!i.util.supports.reliable||(this.dataChannel.binaryType="arraybuffer"),this.dataChannel.onopen=function(){o.default.log("DC#"+e.connectionId+" dc connection success"),e._open=!0,e.emit(a.ConnectionEventType.Open)},this.dataChannel.onmessage=function(t){o.default.log("DC#"+e.connectionId+" dc onmessage:",t.data),e._handleDataMessage(t)},this.dataChannel.onclose=function(){o.default.log("DC#"+e.connectionId+" dc closed for:",e.peer),e.close()}},s.prototype._handleDataMessage=function(e){var t=this,o=e.data,r=o.constructor,s=o;if(this.serialization===a.SerializationType.Binary||this.serialization===a.SerializationType.BinaryUTF8){if(r===Blob)return void i.util.blobToArrayBuffer(o,function(e){var n=i.util.unpack(e);t.emit(a.ConnectionEventType.Data,n)});if(r===ArrayBuffer)s=i.util.unpack(o);else if(r===String){var u=i.util.binaryStringToArrayBuffer(o);s=i.util.unpack(u)}}else this.serialization===a.SerializationType.JSON&&(s=this.parse(o));s.__peerData?this._handleChunk(s):n.prototype.emit.call(this,a.ConnectionEventType.Data,s)},s.prototype._handleChunk=function(e){var t=e.__peerData,n=this._chunkedData[t]||{data:[],count:0,total:e.total};if(n.data[e.n]=e.data,n.count++,this._chunkedData[t]=n,n.total===n.count){delete this._chunkedData[t];var i=new Blob(n.data);this._handleDataMessage({data:i})}},s.prototype.close=function(){this._buffer=[],this._bufferSize=0,this._chunkedData={},this._negotiator&&(this._negotiator.cleanup(),this._negotiator=null),this.provider&&(this.provider._removeConnection(this),this.provider=null),this.dataChannel&&(this.dataChannel.onopen=null,this.dataChannel.onmessage=null,this.dataChannel.onclose=null,this._dc=null),this._encodingQueue&&(this._encodingQueue.destroy(),this._encodingQueue.removeAllListeners(),this._encodingQueue=null),this.open&&(this._open=!1,n.prototype.emit.call(this,a.ConnectionEventType.Close))},s.prototype.send=function(e,t){if(this.open)if(this.serialization===a.SerializationType.JSON)this._bufferedSend(this.stringify(e));else if(this.serialization===a.SerializationType.Binary||this.serialization===a.SerializationType.BinaryUTF8){var o=i.util.pack(e);if(!t&&o.size>i.util.chunkedMTU)return void this._sendChunks(o);i.util.supports.binaryBlob?this._bufferedSend(o):this._encodingQueue.enque(o)}else this._bufferedSend(e);else n.prototype.emit.call(this,a.ConnectionEventType.Error,new Error("Connection is not open. You should listen for the `open` event before sending messages."))},s.prototype._bufferedSend=function(e){!this._buffering&&this._trySend(e)||(this._buffer.push(e),this._bufferSize=this._buffer.length)},s.prototype._trySend=function(e){var t=this;if(!this.open)return!1;if(this.dataChannel.bufferedAmount>s.MAX_BUFFERED_AMOUNT)return this._buffering=!0,setTimeout(function(){t._buffering=!1,t._tryBuffer()},50),!1;try{this.dataChannel.send(e)}catch(n){return o.default.error("DC#:"+this.connectionId+" Error when sending:",n),this._buffering=!0,this.close(),!1}return!0},s.prototype._tryBuffer=function(){if(this.open&&0!==this._buffer.length){var e=this._buffer[0];this._trySend(e)&&(this._buffer.shift(),this._bufferSize=this._buffer.length,this._tryBuffer())}},s.prototype._sendChunks=function(e){var n,r,a=i.util.chunk(e);o.default.log("DC#"+this.connectionId+" Try to send "+a.length+" chunks...");try{for(var s=t(a),u=s.next();!u.done;u=s.next()){var l=u.value;this.send(l,!0)}}catch(f){n={error:f}}finally{try{u&&!u.done&&(r=s.return)&&r.call(s)}finally{if(n)throw n.error}}},s.prototype.handleMessage=function(e){var t=e.payload;switch(e.type){case a.ServerMessageType.Answer:this._negotiator.handleSDP(e.type,t.sdp);break;case a.ServerMessageType.Candidate:this._negotiator.handleCandidate(t.candidate);break;default:o.default.warn("Unrecognized message type:",e.type,"from peer:",this.peer)}},s.ID_PREFIX="dc_",s.MAX_BUFFERED_AMOUNT=8388608,s}(s.BaseConnection);exports.DataConnection=l;
},{"./util":"BHXf","./logger":"WOs9","./negotiator":"HCdX","./enums":"ZRYf","./baseconnection":"tQFK","./encodingQueue":"GGp6"}],"in7L":[function(require,module,exports) {
"use strict";var t=this&&this.__awaiter||function(t,e,r,o){return new(r||(r=Promise))(function(n,s){function i(t){try{a(o.next(t))}catch(e){s(e)}}function u(t){try{a(o.throw(t))}catch(e){s(e)}}function a(t){var e;t.done?n(t.value):(e=t.value,e instanceof r?e:new r(function(t){t(e)})).then(i,u)}a((o=o.apply(t,e||[])).next())})},e=this&&this.__generator||function(t,e){var r,o,n,s,i={label:0,sent:function(){if(1&n[0])throw n[1];return n[1]},trys:[],ops:[]};return s={next:u(0),throw:u(1),return:u(2)},"function"==typeof Symbol&&(s[Symbol.iterator]=function(){return this}),s;function u(s){return function(u){return function(s){if(r)throw new TypeError("Generator is already executing.");for(;i;)try{if(r=1,o&&(n=2&s[0]?o.return:s[0]?o.throw||((n=o.return)&&n.call(o),0):o.next)&&!(n=n.call(o,s[1])).done)return n;switch(o=0,n&&(s=[2&s[0],n.value]),s[0]){case 0:case 1:n=s;break;case 4:return i.label++,{value:s[1],done:!1};case 5:i.label++,o=s[1],s=[0];continue;case 7:s=i.ops.pop(),i.trys.pop();continue;default:if(!(n=(n=i.trys).length>0&&n[n.length-1])&&(6===s[0]||2===s[0])){i=0;continue}if(3===s[0]&&(!n||s[1]>n[0]&&s[1]<n[3])){i.label=s[1];break}if(6===s[0]&&i.label<n[1]){i.label=n[1],n=s;break}if(n&&i.label<n[2]){i.label=n[2],i.ops.push(s);break}n[2]&&i.ops.pop(),i.trys.pop();continue}s=e.call(t,i)}catch(u){s=[6,u],o=0}finally{r=n=0}if(5&s[0])throw s[1];return{value:s[0]?s[1]:void 0,done:!0}}([s,u])}}},r=this&&this.__importDefault||function(t){return t&&t.__esModule?t:{default:t}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.API=void 0;var o=require("./util"),n=r(require("./logger")),s=function(){function r(t){this._options=t}return r.prototype._buildUrl=function(t){var e=(this._options.secure?"https://":"http://")+this._options.host+":"+this._options.port+this._options.path+this._options.key+"/"+t;return e+="?ts="+(new Date).getTime()+Math.random()},r.prototype.retrieveId=function(){return t(this,void 0,Promise,function(){var t,r,s,i;return e(this,function(e){switch(e.label){case 0:t=this._buildUrl("id"),e.label=1;case 1:return e.trys.push([1,3,,4]),[4,fetch(t)];case 2:if(200!==(r=e.sent()).status)throw new Error("Error. Status:"+r.status);return[2,r.text()];case 3:throw s=e.sent(),n.default.error("Error retrieving ID",s),i="","/"===this._options.path&&this._options.host!==o.util.CLOUD_HOST&&(i=" If you passed in a `path` to your self-hosted PeerServer, you'll also need to pass in that same path when creating a new Peer."),new Error("Could not get an ID from the server."+i);case 4:return[2]}})})},r.prototype.listAllPeers=function(){return t(this,void 0,Promise,function(){var t,r,s,i;return e(this,function(e){switch(e.label){case 0:t=this._buildUrl("peers"),e.label=1;case 1:return e.trys.push([1,3,,4]),[4,fetch(t)];case 2:if(200!==(r=e.sent()).status){if(401===r.status)throw s="",s=this._options.host===o.util.CLOUD_HOST?"It looks like you're using the cloud server. You can email team@peerjs.com to enable peer listing for your API key.":"You need to enable `allow_discovery` on your self-hosted PeerServer to use this feature.",new Error("It doesn't look like you have permission to list peers IDs. "+s);throw new Error("Error. Status:"+r.status)}return[2,r.json()];case 3:throw i=e.sent(),n.default.error("Error retrieving list peers",i),new Error("Could not get list peers from the server."+i);case 4:return[2]}})})},r}();exports.API=s;
},{"./util":"BHXf","./logger":"WOs9"}],"Hxpd":[function(require,module,exports) {
"use strict";var e=this&&this.__extends||function(){var e=function(t,n){return(e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n])})(t,n)};return function(t,n){if("function"!=typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function r(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),t=this&&this.__assign||function(){return(t=Object.assign||function(e){for(var t,n=1,r=arguments.length;n<r;n++)for(var o in t=arguments[n])Object.prototype.hasOwnProperty.call(t,o)&&(e[o]=t[o]);return e}).apply(this,arguments)},n=this&&this.__values||function(e){var t="function"==typeof Symbol&&Symbol.iterator,n=t&&e[t],r=0;if(n)return n.call(e);if(e&&"number"==typeof e.length)return{next:function(){return e&&r>=e.length&&(e=void 0),{value:e&&e[r++],done:!e}}};throw new TypeError(t?"Object is not iterable.":"Symbol.iterator is not defined.")},r=this&&this.__read||function(e,t){var n="function"==typeof Symbol&&e[Symbol.iterator];if(!n)return e;var r,o,i=n.call(e),s=[];try{for(;(void 0===t||t-- >0)&&!(r=i.next()).done;)s.push(r.value)}catch(a){o={error:a}}finally{try{r&&!r.done&&(n=i.return)&&n.call(i)}finally{if(o)throw o.error}}return s},o=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.Peer=void 0;var i=require("eventemitter3"),s=require("./util"),a=o(require("./logger")),c=require("./socket"),l=require("./mediaconnection"),u=require("./dataconnection"),d=require("./enums"),p=require("./api"),h=function(){return function(){}}(),f=function(o){function i(e,n){var r,c=o.call(this)||this;return c._id=null,c._lastServerId=null,c._destroyed=!1,c._disconnected=!1,c._open=!1,c._connections=new Map,c._lostMessages=new Map,e&&e.constructor==Object?n=e:e&&(r=e.toString()),n=t({debug:0,host:s.util.CLOUD_HOST,port:s.util.CLOUD_PORT,path:"/",key:i.DEFAULT_KEY,token:s.util.randomToken(),config:s.util.defaultConfig},n),c._options=n,"/"===c._options.host&&(c._options.host=window.location.hostname),c._options.path&&("/"!==c._options.path[0]&&(c._options.path="/"+c._options.path),"/"!==c._options.path[c._options.path.length-1]&&(c._options.path+="/")),void 0===c._options.secure&&c._options.host!==s.util.CLOUD_HOST?c._options.secure=s.util.isSecure():c._options.host==s.util.CLOUD_HOST&&(c._options.secure=!0),c._options.logFunction&&a.default.setLogFunction(c._options.logFunction),a.default.logLevel=c._options.debug||0,c._api=new p.API(n),c._socket=c._createServerConnection(),s.util.supports.audioVideo||s.util.supports.data?r&&!s.util.validateId(r)?(c._delayedAbort(d.PeerErrorType.InvalidID,'ID "'+r+'" is invalid'),c):(r?c._initialize(r):c._api.retrieveId().then(function(e){return c._initialize(e)}).catch(function(e){return c._abort(d.PeerErrorType.ServerError,e)}),c):(c._delayedAbort(d.PeerErrorType.BrowserIncompatible,"The current browser does not support WebRTC"),c)}return e(i,o),Object.defineProperty(i.prototype,"id",{get:function(){return this._id},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"options",{get:function(){return this._options},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"open",{get:function(){return this._open},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"socket",{get:function(){return this._socket},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"connections",{get:function(){var e,t,o=Object.create(null);try{for(var i=n(this._connections),s=i.next();!s.done;s=i.next()){var a=r(s.value,2),c=a[0],l=a[1];o[c]=l}}catch(u){e={error:u}}finally{try{s&&!s.done&&(t=i.return)&&t.call(i)}finally{if(e)throw e.error}}return o},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"destroyed",{get:function(){return this._destroyed},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"disconnected",{get:function(){return this._disconnected},enumerable:!1,configurable:!0}),i.prototype._createServerConnection=function(){var e=this,t=new c.Socket(this._options.secure,this._options.host,this._options.port,this._options.path,this._options.key,this._options.pingInterval);return t.on(d.SocketEventType.Message,function(t){e._handleMessage(t)}),t.on(d.SocketEventType.Error,function(t){e._abort(d.PeerErrorType.SocketError,t)}),t.on(d.SocketEventType.Disconnected,function(){e.disconnected||(e.emitError(d.PeerErrorType.Network,"Lost connection to server."),e.disconnect())}),t.on(d.SocketEventType.Close,function(){e.disconnected||e._abort(d.PeerErrorType.SocketClosed,"Underlying socket is already closed.")}),t},i.prototype._initialize=function(e){this._id=e,this.socket.start(e,this._options.token)},i.prototype._handleMessage=function(e){var t,r,o=e.type,i=e.payload,s=e.src;switch(o){case d.ServerMessageType.Open:this._lastServerId=this.id,this._open=!0,this.emit(d.PeerEventType.Open,this.id);break;case d.ServerMessageType.Error:this._abort(d.PeerErrorType.ServerError,i.msg);break;case d.ServerMessageType.IdTaken:this._abort(d.PeerErrorType.UnavailableID,'ID "'+this.id+'" is taken');break;case d.ServerMessageType.InvalidKey:this._abort(d.PeerErrorType.InvalidKey,'API KEY "'+this._options.key+'" is invalid');break;case d.ServerMessageType.Leave:a.default.log("Received leave message from "+s),this._cleanupPeer(s),this._connections.delete(s);break;case d.ServerMessageType.Expire:this.emitError(d.PeerErrorType.PeerUnavailable,"Could not connect to peer "+s);break;case d.ServerMessageType.Offer:var c=i.connectionId;if((_=this.getConnection(s,c))&&(_.close(),a.default.warn("Offer received for existing Connection ID:"+c)),i.type===d.ConnectionType.Media)_=new l.MediaConnection(s,this,{connectionId:c,_payload:i,metadata:i.metadata}),this._addConnection(s,_),this.emit(d.PeerEventType.Call,_);else{if(i.type!==d.ConnectionType.Data)return void a.default.warn("Received malformed connection type:"+i.type);_=new u.DataConnection(s,this,{connectionId:c,_payload:i,metadata:i.metadata,label:i.label,serialization:i.serialization,reliable:i.reliable}),this._addConnection(s,_),this.emit(d.PeerEventType.Connection,_)}var p=this._getMessages(c);try{for(var h=n(p),f=h.next();!f.done;f=h.next()){var y=f.value;_.handleMessage(y)}}catch(v){t={error:v}}finally{try{f&&!f.done&&(r=h.return)&&r.call(h)}finally{if(t)throw t.error}}break;default:if(!i)return void a.default.warn("You received a malformed message from "+s+" of type "+o);var _;c=i.connectionId;(_=this.getConnection(s,c))&&_.peerConnection?_.handleMessage(e):c?this._storeMessage(c,e):a.default.warn("You received an unrecognized message:",e)}},i.prototype._storeMessage=function(e,t){this._lostMessages.has(e)||this._lostMessages.set(e,[]),this._lostMessages.get(e).push(t)},i.prototype._getMessages=function(e){var t=this._lostMessages.get(e);return t?(this._lostMessages.delete(e),t):[]},i.prototype.connect=function(e,t){if(void 0===t&&(t={}),this.disconnected)return a.default.warn("You cannot connect to a new Peer because you called .disconnect() on this Peer and ended your connection with the server. You can create a new Peer to reconnect, or call reconnect on this peer if you believe its ID to still be available."),void this.emitError(d.PeerErrorType.Disconnected,"Cannot connect to new Peer after disconnecting from server.");var n=new u.DataConnection(e,this,t);return this._addConnection(e,n),n},i.prototype.call=function(e,t,n){if(void 0===n&&(n={}),this.disconnected)return a.default.warn("You cannot connect to a new Peer because you called .disconnect() on this Peer and ended your connection with the server. You can create a new Peer to reconnect."),void this.emitError(d.PeerErrorType.Disconnected,"Cannot connect to new Peer after disconnecting from server.");if(t){n._stream=t;var r=new l.MediaConnection(e,this,n);return this._addConnection(e,r),r}a.default.error("To call a peer, you must provide a stream from your browser's `getUserMedia`.")},i.prototype._addConnection=function(e,t){a.default.log("add connection "+t.type+":"+t.connectionId+" to peerId:"+e),this._connections.has(e)||this._connections.set(e,[]),this._connections.get(e).push(t)},i.prototype._removeConnection=function(e){var t=this._connections.get(e.peer);if(t){var n=t.indexOf(e);-1!==n&&t.splice(n,1)}this._lostMessages.delete(e.connectionId)},i.prototype.getConnection=function(e,t){var r,o,i=this._connections.get(e);if(!i)return null;try{for(var s=n(i),a=s.next();!a.done;a=s.next()){var c=a.value;if(c.connectionId===t)return c}}catch(l){r={error:l}}finally{try{a&&!a.done&&(o=s.return)&&o.call(s)}finally{if(r)throw r.error}}return null},i.prototype._delayedAbort=function(e,t){var n=this;setTimeout(function(){n._abort(e,t)},0)},i.prototype._abort=function(e,t){a.default.error("Aborting!"),this.emitError(e,t),this._lastServerId?this.disconnect():this.destroy()},i.prototype.emitError=function(e,t){var n;a.default.error("Error:",t),(n="string"==typeof t?new Error(t):t).type=e,this.emit(d.PeerEventType.Error,n)},i.prototype.destroy=function(){this.destroyed||(a.default.log("Destroy peer with ID:"+this.id),this.disconnect(),this._cleanup(),this._destroyed=!0,this.emit(d.PeerEventType.Close))},i.prototype._cleanup=function(){var e,t;try{for(var r=n(this._connections.keys()),o=r.next();!o.done;o=r.next()){var i=o.value;this._cleanupPeer(i),this._connections.delete(i)}}catch(s){e={error:s}}finally{try{o&&!o.done&&(t=r.return)&&t.call(r)}finally{if(e)throw e.error}}this.socket.removeAllListeners()},i.prototype._cleanupPeer=function(e){var t,r,o=this._connections.get(e);if(o)try{for(var i=n(o),s=i.next();!s.done;s=i.next()){s.value.close()}}catch(a){t={error:a}}finally{try{s&&!s.done&&(r=i.return)&&r.call(i)}finally{if(t)throw t.error}}},i.prototype.disconnect=function(){if(!this.disconnected){var e=this.id;a.default.log("Disconnect peer with ID:"+e),this._disconnected=!0,this._open=!1,this.socket.close(),this._lastServerId=e,this._id=null,this.emit(d.PeerEventType.Disconnected,e)}},i.prototype.reconnect=function(){if(this.disconnected&&!this.destroyed)a.default.log("Attempting reconnection to server with ID "+this._lastServerId),this._disconnected=!1,this._initialize(this._lastServerId);else{if(this.destroyed)throw new Error("This peer cannot reconnect to the server. It has already been destroyed.");if(this.disconnected||this.open)throw new Error("Peer "+this.id+" cannot reconnect because it is not disconnected from the server!");a.default.error("In a hurry? We're still trying to make the initial connection!")}},i.prototype.listAllPeers=function(e){var t=this;void 0===e&&(e=function(e){}),this._api.listAllPeers().then(function(t){return e(t)}).catch(function(e){return t._abort(d.PeerErrorType.ServerError,e)})},i.DEFAULT_KEY="peerjs",i}(i.EventEmitter);exports.Peer=f;
},{"eventemitter3":"JJlS","./util":"BHXf","./logger":"WOs9","./socket":"wJlv","./mediaconnection":"dbHP","./dataconnection":"GBTQ","./enums":"ZRYf","./api":"in7L"}],"iTK6":[function(require,module,exports) {
"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.peerjs=void 0;var e=require("./util"),r=require("./peer");exports.peerjs={Peer:r.Peer,util:e.util},exports.default=r.Peer,window.peerjs=exports.peerjs,window.Peer=r.Peer;
},{"./util":"BHXf","./peer":"Hxpd"}]},{},["iTK6"], null)
//# sourceMappingURL=/peerjs.min.js.map
/* --------------------------------------------------------------
         js/libs/qrcode.min.js
   -------------------------------------------------------------- */
/* https://github.com/davidshimjs/qrcodejs */ var QRCode;!function(){function a(a){this.mode=c.MODE_8BIT_BYTE,this.data=a,this.parsedData=[];for(var b=[],d=0,e=this.data.length;e>d;d++){var f=this.data.charCodeAt(d);f>65536?(b[0]=240|(1835008&f)>>>18,b[1]=128|(258048&f)>>>12,b[2]=128|(4032&f)>>>6,b[3]=128|63&f):f>2048?(b[0]=224|(61440&f)>>>12,b[1]=128|(4032&f)>>>6,b[2]=128|63&f):f>128?(b[0]=192|(1984&f)>>>6,b[1]=128|63&f):b[0]=f,this.parsedData=this.parsedData.concat(b)}this.parsedData.length!=this.data.length&&(this.parsedData.unshift(191),this.parsedData.unshift(187),this.parsedData.unshift(239))}function b(a,b){this.typeNumber=a,this.errorCorrectLevel=b,this.modules=null,this.moduleCount=0,this.dataCache=null,this.dataList=[]}function i(a,b){if(void 0==a.length)throw new Error(a.length+"/"+b);for(var c=0;c<a.length&&0==a[c];)c++;this.num=new Array(a.length-c+b);for(var d=0;d<a.length-c;d++)this.num[d]=a[d+c]}function j(a,b){this.totalCount=a,this.dataCount=b}function k(){this.buffer=[],this.length=0}function m(){return"undefined"!=typeof CanvasRenderingContext2D}function n(){var a=!1,b=navigator.userAgent;return/android/i.test(b)&&(a=!0,aMat=b.toString().match(/android ([0-9]\.[0-9])/i),aMat&&aMat[1]&&(a=parseFloat(aMat[1]))),a}function r(a,b){for(var c=1,e=s(a),f=0,g=l.length;g>=f;f++){var h=0;switch(b){case d.L:h=l[f][0];break;case d.M:h=l[f][1];break;case d.Q:h=l[f][2];break;case d.H:h=l[f][3]}if(h>=e)break;c++}if(c>l.length)throw new Error("Too long data");return c}function s(a){var b=encodeURI(a).toString().replace(/\%[0-9a-fA-F]{2}/g,"a");return b.length+(b.length!=a?3:0)}a.prototype={getLength:function(){return this.parsedData.length},write:function(a){for(var b=0,c=this.parsedData.length;c>b;b++)a.put(this.parsedData[b],8)}},b.prototype={addData:function(b){var c=new a(b);this.dataList.push(c),this.dataCache=null},isDark:function(a,b){if(0>a||this.moduleCount<=a||0>b||this.moduleCount<=b)throw new Error(a+","+b);return this.modules[a][b]},getModuleCount:function(){return this.moduleCount},make:function(){this.makeImpl(!1,this.getBestMaskPattern())},makeImpl:function(a,c){this.moduleCount=4*this.typeNumber+17,this.modules=new Array(this.moduleCount);for(var d=0;d<this.moduleCount;d++){this.modules[d]=new Array(this.moduleCount);for(var e=0;e<this.moduleCount;e++)this.modules[d][e]=null}this.setupPositionProbePattern(0,0),this.setupPositionProbePattern(this.moduleCount-7,0),this.setupPositionProbePattern(0,this.moduleCount-7),this.setupPositionAdjustPattern(),this.setupTimingPattern(),this.setupTypeInfo(a,c),this.typeNumber>=7&&this.setupTypeNumber(a),null==this.dataCache&&(this.dataCache=b.createData(this.typeNumber,this.errorCorrectLevel,this.dataList)),this.mapData(this.dataCache,c)},setupPositionProbePattern:function(a,b){for(var c=-1;7>=c;c++)if(!(-1>=a+c||this.moduleCount<=a+c))for(var d=-1;7>=d;d++)-1>=b+d||this.moduleCount<=b+d||(this.modules[a+c][b+d]=c>=0&&6>=c&&(0==d||6==d)||d>=0&&6>=d&&(0==c||6==c)||c>=2&&4>=c&&d>=2&&4>=d?!0:!1)},getBestMaskPattern:function(){for(var a=0,b=0,c=0;8>c;c++){this.makeImpl(!0,c);var d=f.getLostPoint(this);(0==c||a>d)&&(a=d,b=c)}return b},createMovieClip:function(a,b,c){var d=a.createEmptyMovieClip(b,c),e=1;this.make();for(var f=0;f<this.modules.length;f++)for(var g=f*e,h=0;h<this.modules[f].length;h++){var i=h*e,j=this.modules[f][h];j&&(d.beginFill(0,100),d.moveTo(i,g),d.lineTo(i+e,g),d.lineTo(i+e,g+e),d.lineTo(i,g+e),d.endFill())}return d},setupTimingPattern:function(){for(var a=8;a<this.moduleCount-8;a++)null==this.modules[a][6]&&(this.modules[a][6]=0==a%2);for(var b=8;b<this.moduleCount-8;b++)null==this.modules[6][b]&&(this.modules[6][b]=0==b%2)},setupPositionAdjustPattern:function(){for(var a=f.getPatternPosition(this.typeNumber),b=0;b<a.length;b++)for(var c=0;c<a.length;c++){var d=a[b],e=a[c];if(null==this.modules[d][e])for(var g=-2;2>=g;g++)for(var h=-2;2>=h;h++)this.modules[d+g][e+h]=-2==g||2==g||-2==h||2==h||0==g&&0==h?!0:!1}},setupTypeNumber:function(a){for(var b=f.getBCHTypeNumber(this.typeNumber),c=0;18>c;c++){var d=!a&&1==(1&b>>c);this.modules[Math.floor(c/3)][c%3+this.moduleCount-8-3]=d}for(var c=0;18>c;c++){var d=!a&&1==(1&b>>c);this.modules[c%3+this.moduleCount-8-3][Math.floor(c/3)]=d}},setupTypeInfo:function(a,b){for(var c=this.errorCorrectLevel<<3|b,d=f.getBCHTypeInfo(c),e=0;15>e;e++){var g=!a&&1==(1&d>>e);6>e?this.modules[e][8]=g:8>e?this.modules[e+1][8]=g:this.modules[this.moduleCount-15+e][8]=g}for(var e=0;15>e;e++){var g=!a&&1==(1&d>>e);8>e?this.modules[8][this.moduleCount-e-1]=g:9>e?this.modules[8][15-e-1+1]=g:this.modules[8][15-e-1]=g}this.modules[this.moduleCount-8][8]=!a},mapData:function(a,b){for(var c=-1,d=this.moduleCount-1,e=7,g=0,h=this.moduleCount-1;h>0;h-=2)for(6==h&&h--;;){for(var i=0;2>i;i++)if(null==this.modules[d][h-i]){var j=!1;g<a.length&&(j=1==(1&a[g]>>>e));var k=f.getMask(b,d,h-i);k&&(j=!j),this.modules[d][h-i]=j,e--,-1==e&&(g++,e=7)}if(d+=c,0>d||this.moduleCount<=d){d-=c,c=-c;break}}}},b.PAD0=236,b.PAD1=17,b.createData=function(a,c,d){for(var e=j.getRSBlocks(a,c),g=new k,h=0;h<d.length;h++){var i=d[h];g.put(i.mode,4),g.put(i.getLength(),f.getLengthInBits(i.mode,a)),i.write(g)}for(var l=0,h=0;h<e.length;h++)l+=e[h].dataCount;if(g.getLengthInBits()>8*l)throw new Error("code length overflow. ("+g.getLengthInBits()+">"+8*l+")");for(g.getLengthInBits()+4<=8*l&&g.put(0,4);0!=g.getLengthInBits()%8;)g.putBit(!1);for(;;){if(g.getLengthInBits()>=8*l)break;if(g.put(b.PAD0,8),g.getLengthInBits()>=8*l)break;g.put(b.PAD1,8)}return b.createBytes(g,e)},b.createBytes=function(a,b){for(var c=0,d=0,e=0,g=new Array(b.length),h=new Array(b.length),j=0;j<b.length;j++){var k=b[j].dataCount,l=b[j].totalCount-k;d=Math.max(d,k),e=Math.max(e,l),g[j]=new Array(k);for(var m=0;m<g[j].length;m++)g[j][m]=255&a.buffer[m+c];c+=k;var n=f.getErrorCorrectPolynomial(l),o=new i(g[j],n.getLength()-1),p=o.mod(n);h[j]=new Array(n.getLength()-1);for(var m=0;m<h[j].length;m++){var q=m+p.getLength()-h[j].length;h[j][m]=q>=0?p.get(q):0}}for(var r=0,m=0;m<b.length;m++)r+=b[m].totalCount;for(var s=new Array(r),t=0,m=0;d>m;m++)for(var j=0;j<b.length;j++)m<g[j].length&&(s[t++]=g[j][m]);for(var m=0;e>m;m++)for(var j=0;j<b.length;j++)m<h[j].length&&(s[t++]=h[j][m]);return s};for(var c={MODE_NUMBER:1,MODE_ALPHA_NUM:2,MODE_8BIT_BYTE:4,MODE_KANJI:8},d={L:1,M:0,Q:3,H:2},e={PATTERN000:0,PATTERN001:1,PATTERN010:2,PATTERN011:3,PATTERN100:4,PATTERN101:5,PATTERN110:6,PATTERN111:7},f={PATTERN_POSITION_TABLE:[[],[6,18],[6,22],[6,26],[6,30],[6,34],[6,22,38],[6,24,42],[6,26,46],[6,28,50],[6,30,54],[6,32,58],[6,34,62],[6,26,46,66],[6,26,48,70],[6,26,50,74],[6,30,54,78],[6,30,56,82],[6,30,58,86],[6,34,62,90],[6,28,50,72,94],[6,26,50,74,98],[6,30,54,78,102],[6,28,54,80,106],[6,32,58,84,110],[6,30,58,86,114],[6,34,62,90,118],[6,26,50,74,98,122],[6,30,54,78,102,126],[6,26,52,78,104,130],[6,30,56,82,108,134],[6,34,60,86,112,138],[6,30,58,86,114,142],[6,34,62,90,118,146],[6,30,54,78,102,126,150],[6,24,50,76,102,128,154],[6,28,54,80,106,132,158],[6,32,58,84,110,136,162],[6,26,54,82,110,138,166],[6,30,58,86,114,142,170]],G15:1335,G18:7973,G15_MASK:21522,getBCHTypeInfo:function(a){for(var b=a<<10;f.getBCHDigit(b)-f.getBCHDigit(f.G15)>=0;)b^=f.G15<<f.getBCHDigit(b)-f.getBCHDigit(f.G15);return(a<<10|b)^f.G15_MASK},getBCHTypeNumber:function(a){for(var b=a<<12;f.getBCHDigit(b)-f.getBCHDigit(f.G18)>=0;)b^=f.G18<<f.getBCHDigit(b)-f.getBCHDigit(f.G18);return a<<12|b},getBCHDigit:function(a){for(var b=0;0!=a;)b++,a>>>=1;return b},getPatternPosition:function(a){return f.PATTERN_POSITION_TABLE[a-1]},getMask:function(a,b,c){switch(a){case e.PATTERN000:return 0==(b+c)%2;case e.PATTERN001:return 0==b%2;case e.PATTERN010:return 0==c%3;case e.PATTERN011:return 0==(b+c)%3;case e.PATTERN100:return 0==(Math.floor(b/2)+Math.floor(c/3))%2;case e.PATTERN101:return 0==b*c%2+b*c%3;case e.PATTERN110:return 0==(b*c%2+b*c%3)%2;case e.PATTERN111:return 0==(b*c%3+(b+c)%2)%2;default:throw new Error("bad maskPattern:"+a)}},getErrorCorrectPolynomial:function(a){for(var b=new i([1],0),c=0;a>c;c++)b=b.multiply(new i([1,g.gexp(c)],0));return b},getLengthInBits:function(a,b){if(b>=1&&10>b)switch(a){case c.MODE_NUMBER:return 10;case c.MODE_ALPHA_NUM:return 9;case c.MODE_8BIT_BYTE:return 8;case c.MODE_KANJI:return 8;default:throw new Error("mode:"+a)}else if(27>b)switch(a){case c.MODE_NUMBER:return 12;case c.MODE_ALPHA_NUM:return 11;case c.MODE_8BIT_BYTE:return 16;case c.MODE_KANJI:return 10;default:throw new Error("mode:"+a)}else{if(!(41>b))throw new Error("type:"+b);switch(a){case c.MODE_NUMBER:return 14;case c.MODE_ALPHA_NUM:return 13;case c.MODE_8BIT_BYTE:return 16;case c.MODE_KANJI:return 12;default:throw new Error("mode:"+a)}}},getLostPoint:function(a){for(var b=a.getModuleCount(),c=0,d=0;b>d;d++)for(var e=0;b>e;e++){for(var f=0,g=a.isDark(d,e),h=-1;1>=h;h++)if(!(0>d+h||d+h>=b))for(var i=-1;1>=i;i++)0>e+i||e+i>=b||(0!=h||0!=i)&&g==a.isDark(d+h,e+i)&&f++;f>5&&(c+=3+f-5)}for(var d=0;b-1>d;d++)for(var e=0;b-1>e;e++){var j=0;a.isDark(d,e)&&j++,a.isDark(d+1,e)&&j++,a.isDark(d,e+1)&&j++,a.isDark(d+1,e+1)&&j++,(0==j||4==j)&&(c+=3)}for(var d=0;b>d;d++)for(var e=0;b-6>e;e++)a.isDark(d,e)&&!a.isDark(d,e+1)&&a.isDark(d,e+2)&&a.isDark(d,e+3)&&a.isDark(d,e+4)&&!a.isDark(d,e+5)&&a.isDark(d,e+6)&&(c+=40);for(var e=0;b>e;e++)for(var d=0;b-6>d;d++)a.isDark(d,e)&&!a.isDark(d+1,e)&&a.isDark(d+2,e)&&a.isDark(d+3,e)&&a.isDark(d+4,e)&&!a.isDark(d+5,e)&&a.isDark(d+6,e)&&(c+=40);for(var k=0,e=0;b>e;e++)for(var d=0;b>d;d++)a.isDark(d,e)&&k++;var l=Math.abs(100*k/b/b-50)/5;return c+=10*l}},g={glog:function(a){if(1>a)throw new Error("glog("+a+")");return g.LOG_TABLE[a]},gexp:function(a){for(;0>a;)a+=255;for(;a>=256;)a-=255;return g.EXP_TABLE[a]},EXP_TABLE:new Array(256),LOG_TABLE:new Array(256)},h=0;8>h;h++)g.EXP_TABLE[h]=1<<h;for(var h=8;256>h;h++)g.EXP_TABLE[h]=g.EXP_TABLE[h-4]^g.EXP_TABLE[h-5]^g.EXP_TABLE[h-6]^g.EXP_TABLE[h-8];for(var h=0;255>h;h++)g.LOG_TABLE[g.EXP_TABLE[h]]=h;i.prototype={get:function(a){return this.num[a]},getLength:function(){return this.num.length},multiply:function(a){for(var b=new Array(this.getLength()+a.getLength()-1),c=0;c<this.getLength();c++)for(var d=0;d<a.getLength();d++)b[c+d]^=g.gexp(g.glog(this.get(c))+g.glog(a.get(d)));return new i(b,0)},mod:function(a){if(this.getLength()-a.getLength()<0)return this;for(var b=g.glog(this.get(0))-g.glog(a.get(0)),c=new Array(this.getLength()),d=0;d<this.getLength();d++)c[d]=this.get(d);for(var d=0;d<a.getLength();d++)c[d]^=g.gexp(g.glog(a.get(d))+b);return new i(c,0).mod(a)}},j.RS_BLOCK_TABLE=[[1,26,19],[1,26,16],[1,26,13],[1,26,9],[1,44,34],[1,44,28],[1,44,22],[1,44,16],[1,70,55],[1,70,44],[2,35,17],[2,35,13],[1,100,80],[2,50,32],[2,50,24],[4,25,9],[1,134,108],[2,67,43],[2,33,15,2,34,16],[2,33,11,2,34,12],[2,86,68],[4,43,27],[4,43,19],[4,43,15],[2,98,78],[4,49,31],[2,32,14,4,33,15],[4,39,13,1,40,14],[2,121,97],[2,60,38,2,61,39],[4,40,18,2,41,19],[4,40,14,2,41,15],[2,146,116],[3,58,36,2,59,37],[4,36,16,4,37,17],[4,36,12,4,37,13],[2,86,68,2,87,69],[4,69,43,1,70,44],[6,43,19,2,44,20],[6,43,15,2,44,16],[4,101,81],[1,80,50,4,81,51],[4,50,22,4,51,23],[3,36,12,8,37,13],[2,116,92,2,117,93],[6,58,36,2,59,37],[4,46,20,6,47,21],[7,42,14,4,43,15],[4,133,107],[8,59,37,1,60,38],[8,44,20,4,45,21],[12,33,11,4,34,12],[3,145,115,1,146,116],[4,64,40,5,65,41],[11,36,16,5,37,17],[11,36,12,5,37,13],[5,109,87,1,110,88],[5,65,41,5,66,42],[5,54,24,7,55,25],[11,36,12],[5,122,98,1,123,99],[7,73,45,3,74,46],[15,43,19,2,44,20],[3,45,15,13,46,16],[1,135,107,5,136,108],[10,74,46,1,75,47],[1,50,22,15,51,23],[2,42,14,17,43,15],[5,150,120,1,151,121],[9,69,43,4,70,44],[17,50,22,1,51,23],[2,42,14,19,43,15],[3,141,113,4,142,114],[3,70,44,11,71,45],[17,47,21,4,48,22],[9,39,13,16,40,14],[3,135,107,5,136,108],[3,67,41,13,68,42],[15,54,24,5,55,25],[15,43,15,10,44,16],[4,144,116,4,145,117],[17,68,42],[17,50,22,6,51,23],[19,46,16,6,47,17],[2,139,111,7,140,112],[17,74,46],[7,54,24,16,55,25],[34,37,13],[4,151,121,5,152,122],[4,75,47,14,76,48],[11,54,24,14,55,25],[16,45,15,14,46,16],[6,147,117,4,148,118],[6,73,45,14,74,46],[11,54,24,16,55,25],[30,46,16,2,47,17],[8,132,106,4,133,107],[8,75,47,13,76,48],[7,54,24,22,55,25],[22,45,15,13,46,16],[10,142,114,2,143,115],[19,74,46,4,75,47],[28,50,22,6,51,23],[33,46,16,4,47,17],[8,152,122,4,153,123],[22,73,45,3,74,46],[8,53,23,26,54,24],[12,45,15,28,46,16],[3,147,117,10,148,118],[3,73,45,23,74,46],[4,54,24,31,55,25],[11,45,15,31,46,16],[7,146,116,7,147,117],[21,73,45,7,74,46],[1,53,23,37,54,24],[19,45,15,26,46,16],[5,145,115,10,146,116],[19,75,47,10,76,48],[15,54,24,25,55,25],[23,45,15,25,46,16],[13,145,115,3,146,116],[2,74,46,29,75,47],[42,54,24,1,55,25],[23,45,15,28,46,16],[17,145,115],[10,74,46,23,75,47],[10,54,24,35,55,25],[19,45,15,35,46,16],[17,145,115,1,146,116],[14,74,46,21,75,47],[29,54,24,19,55,25],[11,45,15,46,46,16],[13,145,115,6,146,116],[14,74,46,23,75,47],[44,54,24,7,55,25],[59,46,16,1,47,17],[12,151,121,7,152,122],[12,75,47,26,76,48],[39,54,24,14,55,25],[22,45,15,41,46,16],[6,151,121,14,152,122],[6,75,47,34,76,48],[46,54,24,10,55,25],[2,45,15,64,46,16],[17,152,122,4,153,123],[29,74,46,14,75,47],[49,54,24,10,55,25],[24,45,15,46,46,16],[4,152,122,18,153,123],[13,74,46,32,75,47],[48,54,24,14,55,25],[42,45,15,32,46,16],[20,147,117,4,148,118],[40,75,47,7,76,48],[43,54,24,22,55,25],[10,45,15,67,46,16],[19,148,118,6,149,119],[18,75,47,31,76,48],[34,54,24,34,55,25],[20,45,15,61,46,16]],j.getRSBlocks=function(a,b){var c=j.getRsBlockTable(a,b);if(void 0==c)throw new Error("bad rs block @ typeNumber:"+a+"/errorCorrectLevel:"+b);for(var d=c.length/3,e=[],f=0;d>f;f++)for(var g=c[3*f+0],h=c[3*f+1],i=c[3*f+2],k=0;g>k;k++)e.push(new j(h,i));return e},j.getRsBlockTable=function(a,b){switch(b){case d.L:return j.RS_BLOCK_TABLE[4*(a-1)+0];case d.M:return j.RS_BLOCK_TABLE[4*(a-1)+1];case d.Q:return j.RS_BLOCK_TABLE[4*(a-1)+2];case d.H:return j.RS_BLOCK_TABLE[4*(a-1)+3];default:return void 0}},k.prototype={get:function(a){var b=Math.floor(a/8);return 1==(1&this.buffer[b]>>>7-a%8)},put:function(a,b){for(var c=0;b>c;c++)this.putBit(1==(1&a>>>b-c-1))},getLengthInBits:function(){return this.length},putBit:function(a){var b=Math.floor(this.length/8);this.buffer.length<=b&&this.buffer.push(0),a&&(this.buffer[b]|=128>>>this.length%8),this.length++}};var l=[[17,14,11,7],[32,26,20,14],[53,42,32,24],[78,62,46,34],[106,84,60,44],[134,106,74,58],[154,122,86,64],[192,152,108,84],[230,180,130,98],[271,213,151,119],[321,251,177,137],[367,287,203,155],[425,331,241,177],[458,362,258,194],[520,412,292,220],[586,450,322,250],[644,504,364,280],[718,560,394,310],[792,624,442,338],[858,666,482,382],[929,711,509,403],[1003,779,565,439],[1091,857,611,461],[1171,911,661,511],[1273,997,715,535],[1367,1059,751,593],[1465,1125,805,625],[1528,1190,868,658],[1628,1264,908,698],[1732,1370,982,742],[1840,1452,1030,790],[1952,1538,1112,842],[2068,1628,1168,898],[2188,1722,1228,958],[2303,1809,1283,983],[2431,1911,1351,1051],[2563,1989,1423,1093],[2699,2099,1499,1139],[2809,2213,1579,1219],[2953,2331,1663,1273]],o=function(){var a=function(a,b){this._el=a,this._htOption=b};return a.prototype.draw=function(a){function g(a,b){var c=document.createElementNS("http://www.w3.org/2000/svg",a);for(var d in b)b.hasOwnProperty(d)&&c.setAttribute(d,b[d]);return c}var 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/* --------------------------------------------------------------
         EspruinoTools/libs/webrtc-connection.js
   -------------------------------------------------------------- */
/* This is common code for handling connections with WebRTC using Peer.js
It handles both client and server.

This needs:

EspruinoWebIDE/js/libs/peerjs.min.js

* The 'Bridge' connects direct to Bluetooth/Bangle.js - it is the Client
* The 'Client' (Web IDE) is a server

Protocol:

* Both Bridge and Client have servers
* If the 'Bridge' connects to the 'Client', the Client is immediately sent a {t:"serverId",id:"..."} packet
  * The Client then closes and connects to the Bridge
* When the Client connects to the Bridge, things are working correctly

Packets Sent:

{ t : "getPorts" }
-> { t : "getPortsResponse", ports: [ {}, ...] }

{ t : "connect", port : port }
-> { t : "connectResponse" }

-> { t : "disconnected" } // device got disconnected
{ t : "disconnect" }
-> { t : "disconnectResponse" }

{ t : "write", data : data }
-> { t : "writeResponse" }

"ping"
-> If bridge doesn't get a ping in WEBRTC_INACTIVITY_TIMEOUT it closes the connection
   which we have to do because peer.js doesn't seem to tell us when a connection is closed

TODO:

* The Client (IDE) side needs to be able to remember the Bridge's ID and autoconnect
* We need to have repeated retries for the connection
* Clicking top-left in the bridge to pair should automatically disconnect
* When first connecting (eg localStorage/IDE config empty) it may not work correctly? After a refresh it does

*/

/* Create a connection:
options = {
  bridge : bool
     //  true = we're the one communicating with the Bangle
     //  false = we're communicating with the user
  connectToPeerID : string // if set, we connect to this peer as soon as we start
  onStatus : function(msg) // show status message
  onPeerID : function(id) // we have a peer ID now
  onBridgePeerID : function(id) // CLIENT: the bridge connected to us and gave us its peer ID
  onPeerConnected : function // a peer has connected
  onPeerDisconnected : function // a peer has disconnected
  onGetPorts : function(cb)      // BRIDGE: get port list
  onVideoStream : function(stream) // CLIENT: We have a video stream - display it!
  onPortConnect : function(port, cb) // BRIDGE: start connecting
  onPortDisconnect : function(cb)  // BRIDGE: close active connection
  onPortWrite   : function(data, cb) // BRIDGE: send data
  onPortReceived   : function(data) // CLIENT: Got data from device
  onPortDisconnected : function()   // CLIENT: Port disconnected
  connectVideo : function(stream)   // BRIDGE: Start a video connection with the given medias stream
}

Return options with extras added:

{
  connect : function(id) // connect to the given peer ID
  connectSendPeerId  : function(id) // BRIDGE: Connect to the client in order to tell it to connect back to us!
  getPorts : function(cb) // get current ports
  portConnect : function(port, cb) // CLIENT: Connect to a device
  portDisconnect : function(cb)    // CLIENT: Disconnect
  onPortDisconnected : function()  // BRIDGE: Signal client was disconnected
  portWrite : function(data, cb)   // CLIENT: Send data
  onPortReceived : function(data)    // BRIDGE: Got data from device

  peerId : "..."  // The peer ID of *this* peer
  connections : [] // list of open connections
  connection : undefined // the current open connection (since we are only supporting one connection right now)
}
*/

if (typeof Peer == "undefined") {
  try {
    if (typeof process != "undefined")
      Peer = require("peerjs-on-node").Peer;
    global.File = function() { }; // fix for `ReferenceError: File is not defined` in peerjs-on-node
  } catch (e) {
    console.log('webrtc-connection: require("peerjs-on-node") failed: ', e);
  }
}
if (typeof Peer == "undefined") {
  console.log("webrtc-connection: Peer.js not loaded - Remote Connection disabled");
  throw "No Peer.js implementation available";
}

var peer; // peer.js connection

function webrtcInit(options) {

  const WEBRTC_INACTIVITY_TIMEOUT = 10000; // how long before we kill a socket if no acitivity (because close eventys not getting fired!)
  const WEBRTC_PING_INTERVAL = 1000; // how often do we send out 'ping' messages?

  var callbacks = {}; // list of callbacks

  options = options||{};

  options.peerId = null;
  options.connections = [];
  options.connection = undefined; // active connection

  var localStorageName = options.bridge ? "WEBRTC_BRIDGE_PEER_ID" : "WEBRTC_CLIENT_PEER_ID";

  if ("undefined"!=typeof window &&
      window.localStorage &&
      window.localStorage.getItem(localStorageName))
    options.peerId = window.localStorage.getItem(localStorageName);

  peer = new Peer(options.peerId, {
    debug: 2
  });
  var conn;
  peer.on('open', function (id) {
    // Workaround for peer.reconnect deleting previous id
    if (peer.id === null) {
        console.log('[WebRTC] Received null id from peer open');
        peer.id = options.peerId;
    } else {
      options.peerId = peer.id;
      if ("undefined"!=typeof window &&
        window.localStorage &&
        window.localStorage.setItem(localStorageName, peer.id));
    }
    options.peerId = peer.id;

    console.log('[WebRTC] Peer ID: ' + peer.id);
    if (options.onPeerID)
      options.onPeerID(peer.id);
    if (options.connectToPeerID)
      conn = options.connect(options.connectToPeerID);
  });
  peer.on('disconnected', function () {
    options.onStatus("Connection lost. Reconnecting...");
    console.log('[WebRTC] Connection lost. Reconnecting....');

    // Workaround for peer.reconnect deleting previous id
    peer.id = options.peerId;
    peer._lastServerId = options.peerId;
    peer.reconnect();
  });
  peer.on('close', function() {
    options.onStatus("Connection destroyed. Please refresh");
    console.log('Connection destroyed');
  });
  peer.on('error', function (err) {
    console.log(err);
    options.onStatus("ERROR: "+err);
    // remove this from our active connections list
    if (conn) {
      webrtcRemoveConnection(conn);
      conn = undefined;
    }
  });
  peer.on('call', function(call) {
    if (options.onVideoStream) {
      call.on('stream', function(stream) {
        // `stream` is the MediaStream of the remote peer.
        options.onVideoStream(stream);
      });
      call.on('close', function() {
        // this seems broken https://github.com/peers/peerjs/issues/636
        options.onVideoStream(undefined);
      });
      call.answer(/*mediaStream*/); // answer - not sending a stream back...
    }
  });

  peer.on('connection', function (conn) {
    console.log("[WebRTC] Incoming connection");
    /* If we're a client, we just want to listen for connections
    which will tell us where *we* should connect */
    if (!options.bridge) {
      console.log("[WebRTC] ServerId: We're a client - wait for a serverId packet");
      conn.on('open', function () {
        console.log("[WebRTC] ServerId: Connected to: " + conn.peer);
      });
      conn.on('data', function (data) {
        if ("object" == typeof data &&
            data.t=="serverId" &&
            data.id) {
          console.log("[WebRTC] ServerId: Got server ID : "+data.id);
          if (options.onBridgePeerID)
            options.onBridgePeerID(data.id);
          options.connect(data.id);
        } else
          console.log("[WebRTC] ServerId: Unknown packet!",data);
      });
      conn.on('close', function () {
        console.log("[WebRTC] ServerId: Connection closed");
      });
      return;
    }
    // We're a bridge - handle this connection!
    console.log("[WebRTC] Connected to: " + conn.peer);
    options.onStatus("Connected to: " + conn.peer);
    if (options.onPeerConnected) options.onPeerConnected();
    webrtcAddHandlers(conn);
  });

  Object.assign(options, { // ============== COMMON
    connect : function(id) {
      console.log("[WebRTC] Connecting to "+id+"...");
      var conn = peer.connect(id, {
          reliable: true
      });
      webrtcAddHandlers(conn);
      return conn;
    }
  });

  function send(data) {
    options.connections.forEach(conn => conn.send(data));
  }

  if (options.bridge) {
    Object.assign(options, { // ============== BRIDGE
      getPorts : function(cb) { // CLIENT
        callbackAddWithTimeout("getPorts", cb, 2000);
        send({t:"getPorts"});
      },
      portConnect : function(port, cb) { // CLIENT
        callbackAddWithTimeout("connect", cb, 2000);
        send({t:"connect", port:port});
      },
      portDisconnect : function(cb) { // CLIENT
        callbackAddWithTimeout("disconnect", cb, 2000);
        send({t:"disconnect"});
      },
      onPortDisconnected : function() {
        send({t:"disconnected"});
      },
      onPortReceived : function(data) {
        send({t:"received", data});
      },
      portWrite : function(data, cb) { // CLIENT
        callbackAddWithTimeout("write", cb, 2000);
        send({t:"write", data:data});
      },
      connectVideo : function (stream) {
        if (!webrtc.connections.length) {
          console.log("[WebRTC].connectVideo no active connections");
          return;
        }
        webrtc.connections.forEach(c => {
          peer.call(c.peer, stream);
        });
      },
      connectSendPeerId : function(id) {
        console.log("[WebRTC] ServerId: Connecting to "+id+" send our ID...");
        var conn = peer.connect(id, {
            reliable: true
        });
        conn.on('open', function () {
          console.log("[WebRTC] ServerId: Connected - send our ID" );
          conn.send( {t:"serverId",id:options.peerId});
          setTimeout(function() {
            console.log("[WebRTC] ServerId: Closing");
            conn.close();
          }, 1000);
        });
      }
    });
  } else {
    Object.assign(options, { // ============== CLIENT
      getPorts : function(cb) { // CLIENT
        callbackAddWithTimeout("getPorts", cb, 1000);
        send({t:"getPorts"});
      },
      portConnect : function(port, cb) { // CLIENT
        callbackAddWithTimeout("connect", cb, 10000);
        send({t:"connect", port:port});
      },
      portDisconnect : function(cb) { // CLIENT
        callbackAddWithTimeout("disconnect", cb, 2000);
        send({t:"disconnect"});
      },
      portWrite : function(data, cb) { // CLIENT
        callbackAddWithTimeout("write", cb, 2000);
        send({t:"write", data:data});
      },
    });
  }

  // ---------------------------------

  function callbackAddWithTimeout(id, cb, timeout) {
    var o = { cb : cb };
    o.timeout = setTimeout(function() {
      console.log("[WebRTC] Timeout for "+id);
      o.timeout = undefined;
      if (o.cb) o.cb();
      o.cb = undefined;
    }, timeout);
    callbacks[id] = o;
  }
  function callbackCall(id, data) {
    if (!callbacks[id]) return; // no callback set
    if (callbacks[id].cb)
      callbacks[id].cb(data);
    callbacks[id].cb = undefined;
    if (callbacks[id].timeout)
      clearTimeout(callbacks[id].timeout);
    callbacks[id] = undefined;
  }

  function webrtcRemoveConnection(conn) {
    var idx = options.connections.indexOf(conn);
    if (idx>=0)
      options.connections.splice(idx,1);
  }

  function webrtcAddHandlers(conn) {
    options.connection = conn;
    options.connections.push(conn);
    function timeoutHandler() {
      conn.inactivityTimeout = undefined;
      console.log("[WebRTC] No activity on connection - closing "+conn.peer);
      conn.close();
    }
    conn.inactivityTimeout = setTimeout(timeoutHandler, WEBRTC_INACTIVITY_TIMEOUT);
    conn.on('open', function () {
      console.log("[WebRTC] Connected to: " + conn.peer);
      if (options.onPeerConnected) options.onPeerConnected(conn.peer);
      conn.keepAliveTimer = setInterval(function() {
        conn.send("ping"); // don't send anything useful so we won't have to decode it in webrtcDataHandler
      }, WEBRTC_PING_INTERVAL);
    });
    // Handle incoming data (messages only since this is the signal sender)
    conn.on('data', function (data) {
      webrtcDataHandler(conn, data, options);
      if (conn.inactivityTimeout) clearTimeout(conn.inactivityTimeout);
      conn.inactivityTimeout = setTimeout(timeoutHandler, WEBRTC_INACTIVITY_TIMEOUT);
    });
    conn.on('close', function () {
      console.log("[WebRTC] Connection closed on " + conn.peer);
      options.onStatus("Disconnected from: " + conn.peer);
      options.connection = undefined;
      webrtcRemoveConnection(conn);
      if (conn.keepAliveTimer) {
        clearInterval(conn.keepAliveTimer);
        conn.keepAliveTimer = undefined;
      }
      if (conn.inactivityTimeout) {
        clearTimeout(conn.inactivityTimeout);
        conn.inactivityTimeout = undefined;
      }
      if (options.onPeerDisconnected)
        options.onPeerDisconnected(conn.peer);
    });
  }

  function webrtcDataHandler(conn, data, options) {
    if ("object" != typeof data) return; // ignore ping/etc
    console.log("[WebRTC] data " + JSON.stringify(data));
    if (options.bridge) switch (data.t) { // ================= BRIDGE
      case "getPorts" : // BRIDGE
        options.onGetPorts(ports => {
          conn.send({t:"getPortsResponse", ports:ports});
        });
        break;
      case "connect" : // BRIDGE
        options.onPortConnect(data.port, () => {
          conn.send({t:"connectResponse"});
        });
        break;
      case "disconnect" : // BRIDGE
        options.onPortDisconnect(data.port, () => {
          conn.send({t:"disconnectResponse"});
        });
        break;
      case "write" : // BRIDGE
        options.onPortWrite(data.data, () => {
          conn.send({t:"writeResponse"});
        });
        break;
    } else switch (data.t) { // ======================CLIENT
      case "getPortsResponse" : // CLIENT
        data.ports.forEach(port => {
          // TODO set port.type so we get a different icon?
          if (port.description)
            port.description = "REMOTE: "+port.description;
        });
        callbackCall("getPorts", data.ports);
        break;
      case "connectResponse" : // CLIENT
        callbackCall("connect");
        break;
      case "disconnected" : // CLIENT
        options.onPortDisconnected();
        break;
      case "disconnectResponse" : // CLIENT
        callbackCall("disconnect");
        break;
      case "writeResponse" : // CLIENT
        callbackCall("write");
        break;
      case "received" : // CLIENT
        options.onPortReceived(data.data);
        break;
    }
  }

  // -----------------------------------------------------

  return options;
}

// Fix for running under Node.js
if (typeof global != "undefined")
  global.webrtcInit = webrtcInit;
/* --------------------------------------------------------------
         EspruinoTools/core/serial_webrtc.js
   -------------------------------------------------------------- */
/*
Gordon Williams (gw@pur3.co.uk)

Remote connections using Peer.js

Needs:

libs/webrtc-connection.js
EspruinoWebIDE/js/libs/qrcode.min.js

TODO:

Do we want a way to cancel the remote connection once it is set up?

*/
(function() {
  if (typeof webrtcInit == "undefined") {
    console.log("libs/webrtc-connection.js not loaded - Remote Connection disabled");
    return;
  }
  
  console.log("Remote Connection enabled");

  var webrtc; // Our WebRTC connection
  var webrtcLoading = false;
  var serialReceiveCallback;
  var serialDisconnectCallback;
  var popup; // popup window from showPairingPopup that goes away when the Bridge connects

  function init() {
    Espruino.Core.Config.add("WEBRTC_BRIDGE_ID", {
      section : "Communications",
      name : "Remote Connection Bridge Peer ID",
      descriptionHTML : 'The Bridge\'s Peer ID from  <a href="https://www.espruino.com/ide/remote" target="_blank">espruino.com/ide/remote</a> on another device, or Gadgetbridge. You\'ll then be able to use the Web IDE to communicate with a device via the Bridge. Leave blank to disable.',
      type : "string",
      defaultValue : ""
    });
  }

  function initWebRTC(callback) {
    webrtc = webrtcInit({
      bridge:false, 
      connectToPeerID : Espruino.Config.WEBRTC_BRIDGE_ID ? Espruino.Config.WEBRTC_BRIDGE_ID.trim() : undefined,
      onStatus : function(s) {
        console.log("[WebRTC Status] "+s);
        if (s.startsWith("ERROR"))
          if (callback) { // callback even if no ID because there was an error
            callback(undefined); 
            callback = undefined;
          }
        // we were using Espruino.Core.Terminal.outputDataHandler(s+"\n");
      },
      onPeerID : function(id) {      
        // we have our Peer ID
        if (!Espruino.Config.WEBRTC_BRIDGE_ID && callback) {
          callback(id);
          callback = undefined;
        }
      },
      onBridgePeerID : function(id) {      
        // We got the bridge's peer ID - save it
        Espruino.Config.set("WEBRTC_BRIDGE_ID", id); // force webcam icon
      },
      onVideoStream : function(stream) {
        console.log("[WebRTC onVideoStream] "+(stream?"enabled":"disabled"));
        if (stream) Espruino.Config.set("SHOW_WEBCAM_ICON", 1); // force webcam icon
        if (Espruino.Plugins.Webcam)
          Espruino.Plugins.Webcam.displayMediaStream(stream);
      },
      onPeerConnected : function() {
        if (Espruino.Config.WEBRTC_BRIDGE_ID && callback) {
          callback();
          callback = undefined;
        }
        // peer connected, remove the popup and show the port selector
        if (popup) {
          popup.close(); // popup.onClose will call openCallback(undefined);
          popup = undefined;
        } 
        setTimeout(() => {
          // we might be running as a CLI
          if (Espruino.Core.MenuPortSelector) 
            Espruino.Core.MenuPortSelector.showPortSelector()
        }, 100); // now open the port selector again and we should hopefully see some stuff!
      },
      onPeerDisconnected : function() {
        // peer disconnected so show connection dropped
        if (serialDisconnectCallback) serialDisconnectCallback();
        if (Espruino.Plugins.Webcam)
          Espruino.Plugins.Webcam.displayMediaStream(undefined);
      },
      onPortReceived : function(data) {
        if (serialReceiveCallback)
          serialReceiveCallback(Espruino.Core.Utils.stringToArrayBuffer(data));
      },
      onPortDisconnected : function() {
        if (serialDisconnectCallback) serialDisconnectCallback();
      }
    });  
  }

  var getPorts=function(callback) {
    if (webrtcLoading) {
      callback([], false);
    } else if (webrtc && webrtc.connections.length) {
      // If we have a connection, great - use it to get ports
      webrtc.getPorts(ports => {
        callback(ports, false/*not immediate*/)
      });
    } else if (!webrtc && Espruino.Config.WEBRTC_BRIDGE_ID) {
      webrtcLoading = true;
      initWebRTC(function(id) {
        // could be success or error, it's fine
        webrtcLoading = false;          
      });
      callback([], false);
    } else {
      callback([]); // peer connection failed - ignore this
    }
  };

  // called once we're sure we have a peer ID
  function showPairingPopupWithID() {
    var url = window.location.origin + window.location.pathname + "remote?id=" + webrtc.peerId;
    var qrDiv = document.getElementById("serial_peer_qrcode");
    if (qrDiv==null) {
      qrDiv = document.createElement("div");
      qrDiv.id = "serial_peer_qrcode";
      qrDiv.style = "display:none";
      document.body.append(qrDiv);
    }
    qrDiv.innerHTML = "";
    var qrcode = new QRCode(qrDiv, {
      text: url,
      colorDark : "#000000",
      colorLight : "#ffffff",
      correctLevel : QRCode.CorrectLevel.H
    });
    setTimeout(function() {
      // qrcode doesn't complete immediately and there is no callback
      popup = Espruino.Core.App.openPopup({
        title: "Remote Connection",
        contents: 
`<div style="padding:20px;text-align:center;">
Please scan the QR code below with your phone or copy/paste the URL to start a connection<br/>
<div style="padding:20px">${qrDiv.innerHTML}<br/></div><a href="${url}" target="_blank" style="word-break: break-all;">${url}</a>
</div>`,
        position: "center",
        onClose: function() {
          popup = undefined;
        }
      });   
    }, 200);
  }

  // Initialise WebRTC if needed, and show the popup window
  function showPairingPopup() {
    if (webrtc) showPairingPopupWithID();
    else initWebRTC(showPairingPopupWithID);
  }

  var openSerial=function(serialPort, openCallback, receiveCallback, disconnectCallback) {
    webrtc.portConnect(serialPort, function() {
      serialReceiveCallback = receiveCallback;
      serialDisconnectCallback = disconnectCallback;
      openCallback({});
    });
  };

  // ----------------------------------------------------------
  Espruino.Core.RemoteConnection = {
    init : init,
    showPairingPopup : showPairingPopup,
    initWebRTC : function(callback) {
      if (!webrtc) {
        webrtcLoading = true;
        initWebRTC(function(id) {
          webrtcLoading = false;
          if (callback) callback(id)
        });
      } else callback();
    }
  };
  Espruino.Core.Serial.devices.push({
    "name" : "Remote Connection",
    "getPorts": getPorts,
    "open": openSerial,
    "write": function(data, callback) {
      if (!webrtc) return callback();
      webrtc.portWrite(data, callback);
    },
    "close": function(callback) {
      if (webrtc)
        webrtc.portDisconnect(callback);
      else
        return callback();
    },
  });
})();
/* --------------------------------------------------------------
         EspruinoTools/core/terminal.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  VT100 terminal window
 ------------------------------------------------------------------
**/
"use strict";

(function(){
  if(typeof process !== "undefined" &&
     !process.versions.nw &&
     !process.versions.electron)
    return; // don't load this in std NodeJS

  // Don't load if there is no document or element to attach the terminal to
  if(typeof document === "undefined" ||
    document.querySelector(".editor--terminal .editor__canvas")===null) return;


  var onInputData = function(d){}; // the handler for character data from user

  /* we don't update the terminal as soon as new data arrives as that might block
  it, so instead we wait a while using displayTimeout */
  var displayTimeout = null;
  var displayData = [];

  /* If images are displayed inline, we want to convert them from BMP to
  PNG - but we don't want to do that as they are displayed because they
  keep being updated over and over as data arrives. Instead, update
  after a delay. */
  var imageTimeout = null;

  // Text to be displayed in the terminal
  var termText = [ "" ];
  // Map of terminal line number to text to display before it
  var termExtraText = {};
  // List of (jquerified) DOM elements for each line
  var elements = [];

  var termCursorX = 0;
  var termCursorY = 0;
  var termControlChars = [];

  // maximum lines on the terminal
  var MAX_LINES = 2048;

  function init() {
    // Add stuff we need
    document.querySelector(".editor--terminal .editor__canvas").innerHTML = '<textarea id="terminalfocus" class="terminal__focus" rows="1" cols="1" style="z-index:-100;position:absolute;left:0px;top:0px;"></textarea><div id="terminal" class="terminal"></div>';

    var terminal = document.getElementById("terminal");
    var terminalfocus = document.getElementById("terminalfocus");
    if (terminal === null) {
      console.log("Terminal: terminal element not found, aborting.");
      delete Espruino.Core.Terminal;
      return;
    }

    // Add buttons
    if (Espruino.Core.App) Espruino.Core.App.addIcon({
      id: "clearScreen",
      icon: "clear",
      title : "Clear Screen",
      order: -100,
      area: {
        name: "terminal",
        position: "top"
      },
      click: function(){
        clearTerminal();
        focus();
      }
    });

    var html;
    if (Espruino.Core.Terminal.OVERRIDE_CONTENTS) {
      html = Espruino.Core.Terminal.OVERRIDE_CONTENTS;
    } else {
      html = `
    <div style="max-width:400px;margin:auto;">
      <p><a href="http://www.espruino.com/Web+IDE" target="_blank"><img src="img/ide_logo.png" width="299" height="96" alt="Espruino IDE"/></a></p>
      <p id="versioninfo" style="text-align:right"></p>
      <p style="text-align:center;font-weight:bold">A Code Editor and Terminal for <a href="http://www.espruino.com" target="_blank">Espruino JavaScript Microcontrollers</a></p>
      <p>Try the <a class="tour_link" href="#">guided tour</a> and <a href="http://www.espruino.com/Quick+Start" target="_blank">getting started</a> guide for more information, tutorials and example projects.</p>
      <div id="terminalnews"></div>
      <p>Espruino is <a href="https://github.com/espruino" target="_blank">Open Source</a>.
    Please support us by <a href="http://www.espruino.com/Donate" target="_blank">donating</a> or
      <a href="http://www.espruino.com/Order" target="_blank">buying an official board</a>.</p>
      <p style="text-align:right">
        <a href="http://twitter.com/Espruino" target="_blank"><img src="img/icon_twitter.png" width="16" height="16" alt="Follow on Twitter"/></a>
        <a href="http://youtube.com/subscription_center?add_user=espruino" target="_blank"><img src="img/icon_youtube.png" width="44" height="16" alt="Subscribe on YouTube"/></a>
        <a href="https://www.patreon.com/espruino" target="_blank"><img src="img/icon_patreon.png" width="45" height="16" alt="Support on Patreon"/></a>
      </p>
    </div>`;
      Espruino.Core.Utils.getVersionInfo(function(v) {
        document.getElementById("versioninfo").innerHTML = v;

        var r = 0|(Math.random()*1000000);
        Espruino.Core.Utils.getURL("https://www.espruino.com/ide/news.html?v="+encodeURIComponent(v.replace(/[ ,]/g,"")+"&r="+r), function (data){
          document.getElementById("terminalnews").innerHTML = data;
        });
      });
    }
    terminal.innerHTML = html;

    var el = document.querySelector(".tour_link")
    if (el) el.addEventListener("click",function(e) {
      e.preventDefault();
      document.getElementById("menu-tour").click();
    });

    var mouseDownTime = Date.now();
    var mouseUpTime = Date.now();
    window.addEventListener("mousedown", function() {
      mouseDownTime = Date.now();
    });
    terminal.addEventListener("mouseup" , function(e) {
      var selection = window.getSelection();
      var shortClick = Date.now() < mouseDownTime+200;
      var doubleClick = Date.now() < mouseUpTime+600;
      mouseUpTime = Date.now();
      /* Maybe we basically just clicked (<200ms)
       in which case we don't want to copy but just
       move the cursor. DON'T move cursor
       for double-clicks */
      if (shortClick && !doubleClick) {
        // Move cursor, if we can...
        if (selection &&
            selection.baseNode &&
            selection.baseNode.parentNode &&
            selection.baseNode.parentNode.className=="termLine") {
          var cx = selection.baseOffset;
          var cy = selection.baseNode.parentNode.attributes.lineNumber.value;
          var prev = selection.baseNode.previousSibling;
          while (prev) {
            cx += prev.textContent.length;
            prev = prev.previousSibling;
          }
          //console.log("Click to ",cx,cy, termCursorX,termCursorY);
          var s = "";
          var tx = termCursorX;
          var ty = termCursorY;
          while (cx<tx) { tx--; s+=String.fromCharCode(27,91,68); } // left
          while (cy>ty && termText[ty+1] && ":>".indexOf(termText[ty+1][0])>=0) {
            ty++; s+=String.fromCharCode(27,91,66);
          }
          while (cy<ty && termText[ty-1] && ":>".indexOf(termText[ty-1][0])>=0) {
            ty--; s+=String.fromCharCode(27,91,65);
          }
          if (!termText[ty]) cx=0;
          else if (termText[ty].length<cx)
            cx = termText[ty].length;
          while (cx>tx) { tx++; s+=String.fromCharCode(27,91,67); } // right
          if (s.length) {
            if (termCursorY==termText.length-1 &&
                termCursorX==termText[termCursorY].length) {
              if (termCursorX<=1) {
                /* if we're right at the end, but there are no characters so
                we can't step back - don't try and move because we can't */
                s="";
              } else {
                /* if we're at the end of the last line, we need to step left
                then move, then right - or we could just end up going back in
                the command history */
                s = String.fromCharCode(27,91,68) + s + String.fromCharCode(27,91,67);
              }
            }
            if (s.length)
              onInputData(s);
          }
        }
        terminalfocus.focus();
        if (document.body.offsetHeight < window.innerHeight+50)
          window.scrollTo(0,0); // as terminalfocus is offscreen, just in case force us back onscreen (don't do if we're part of a big document)
        return;
      }

      /* this rather convoluted code checks to see if the selection
       * is actually part of the terminal. It may be that the user
       * clicked on the editor pane, dragged, and released over the
       * terminal in which case we DON'T want to copy. */
      if (selection.rangeCount > 0) {
        var node = selection.getRangeAt(0).startContainer;
        while (node && node!=terminal)
          node = node.parentNode;

        if (node==terminal) {
          // selection WAS part of terminal
          var selectedText = selection.toString();
          if (selectedText.trim().length > 0) {
            //console.log(selectedText);
            //console.log(selectedText.split("").map(function(c) { return c.charCodeAt(0); }));
            selectedText = selectedText.replace(/\xA0/g," "); // Convert nbsp chars to spaces
            //console.log(selectedText.split("").map(function(c) { return c.charCodeAt(0); }));

            /* Because Espruino prefixes multi-line code with ':' it makes
             it a nightmare to copy/paste. This hack gets around it. */
            var allColon = true, hasNewline = false;
            var trimmedSelectedText = selectedText.trim();
            for (var i=0;i<trimmedSelectedText.length-1;i++) {
              if (trimmedSelectedText[i]=="\n")
                hasNewline = true;
              if (trimmedSelectedText[i]=="\n" && trimmedSelectedText[i+1]!=":")
                allColon = false;
            }
            if (allColon && hasNewline) {
              selectedText = selectedText.replace(/\n:/g,"\n");
              if (selectedText[0]==">" ||
                  selectedText[1]==":")
                selectedText = selectedText.substr(1);
            }

            terminalfocus.value = selectedText;
            terminalfocus.select();
            document.execCommand('copy');
            terminalfocus.value = '';
            lastValue = '';
          }
        }
      }
      terminalfocus.focus();
    });
    terminalfocus.focus();
    terminalfocus.addEventListener("focus", function() {
      terminal.classList.add('focus');
    });
    terminalfocus.addEventListener("blur", function() {
      terminal.classList.remove('focus');
    });
    /* Super hack for Android. We can't just look at keypresses since
    it wants to do autocomplete. What we do is keep the current word
    (at least until someone presses a special char) in an input box
    and then try and send the characters needed to keep text on
    Espruino up to date with the text box. */
    var lastValue = terminalfocus.value;
    function changeListener() {
      var thisValue = terminalfocus.value;
      var commonChars = 0;
      while (commonChars<thisValue.length &&
             commonChars<lastValue.length &&
             thisValue[commonChars] == lastValue[commonChars])
        commonChars++;
      var text = "";
      for (var i=commonChars;i<lastValue.length;i++)
        text+="\x08"; // backspace
      text+=thisValue.substr(commonChars);
      lastValue = terminalfocus.value;
      if (text.length) {
        text = Espruino.Core.Utils.asUTF8Bytes(text); // convert UTF8 to constituent bytes
        onInputData(Espruino.Core.Utils.fixBrokenCode(text));
      }
    }
    terminalfocus.addEventListener("input", changeListener);
    terminalfocus.addEventListener("keydown", function(e) {
      var ch = undefined;
      if (e.keyCode == 13) ch = String.fromCharCode(13);
      if (e.ctrlKey) {
        if (e.keyCode == 'C'.charCodeAt(0)) ch = String.fromCharCode(3); // control C
        if (e.keyCode == 'F'.charCodeAt(0)) {
          // fullscreen
          e.preventDefault();
          var term = document.querySelector(".editor__canvas__terminal");
          if (term.classList.contains("editor__canvas__fullscreen")) {
            // was fullscreen - make windowed
            term.classList.remove("editor__canvas__fullscreen");
            document.querySelector(".editor--terminal").append(term)
          } else {
            term.classList.add("editor__canvas__fullscreen");
            document.body.append(term);
          }
          // if we have a webcam it seems we need to start it playing again
          // after moving it
          var vid = document.querySelector("video");
          if (vid) vid.play();
        }
      }
      if (e.altKey) {
        if (e.keyCode == 13) ch = String.fromCharCode(27,10); // Alt enter
      }
      if (e.keyCode == 8) ch = "\x08"; // backspace
      if (e.keyCode == 9) ch = "\x09"; // tab
      if (e.keyCode == 46) ch = String.fromCharCode(27,91,51,126); // delete
      if (e.keyCode == 38) ch = String.fromCharCode(27,91,65); // up
      if (e.keyCode == 40) ch = String.fromCharCode(27,91,66); // down
      if (e.keyCode == 39) ch = String.fromCharCode(27,91,67); // right
      if (e.keyCode == 37) ch = String.fromCharCode(27,91,68); // left
      if (e.keyCode == 36) ch = String.fromCharCode(27,79,72); // home
      if (e.keyCode == 35) ch = String.fromCharCode(27,79,70); // end
      if (e.keyCode == 33) ch = String.fromCharCode(27,91,53,126); // page up
      if (e.keyCode == 34) ch = String.fromCharCode(27,91,54,126); // page down

      if (ch!=undefined) {
        e.preventDefault();
        terminalfocus.value = "";
        lastValue = "";
        ch = Espruino.Core.Utils.asUTF8Bytes(ch); // convert UTF8 to constituent bytes
        onInputData(ch);
      }
    });
    terminalfocus.addEventListener("paste", function() {
      // nasty hack - wait for paste to complete, then get contents of input
      setTimeout(function () {
        changeListener();
        terminalfocus.value = "";
        lastValue = "";
      }, 100);
    });

    // Ensure that data from Espruino goes to this terminal
    Espruino.Core.Serial.startListening(Espruino.Core.Terminal.outputDataHandler);

    Espruino.addProcessor("connected", function(data, callback) {
      grabSerialPort();
      terminal.classList.add("terminal--connected");
      callback(data);
    });
    Espruino.addProcessor("disconnected", function(data, callback) {
      // carriage return, clear to right - remove prompt, add newline
-     outputDataHandler("\n");
      terminal.classList.remove("terminal--connected");
      callback(data);
    });
    Espruino.addProcessor("notification", function(data, callback) {
      var elementClass = "terminal-status-"+data.type;
      var line = termCursorY;
      if (!termExtraText[line]) termExtraText[line]="";
      termExtraText[line] += '<div class="terminal-status-container"><div class="terminal-status '+elementClass+'">'+data.msg+'</div></div>';
      updateTerminal();
      callback(data);
    });

  }

  /* check for any terminal-inline-image and if they are still BMP
  then convert them to PNG using canvas */
  function convertInlineImages() {
    imageTimeout = null;
    var images = document.getElementsByClassName("terminal-inline-image");
    for (var i=0;i<images.length;i++)
      (function(img) {
        if (img.src.startsWith("data:image/bmp;")) {
          // still a BMP
          var oImage = new Image();
          oImage.onload = function(){
            var oCanvas = document.createElement('canvas');
            oCanvas.width = oImage.width;
            oCanvas.height = oImage.height;
            var oCtx = oCanvas.getContext('2d');
            oCtx.drawImage(oImage, 0, 0);
            var url = oCanvas.toDataURL();
            img.src = url;
            img.parentElement.href = url;
          }
          oImage.src = img.src;
        }
      })(images[i]);
  }

  /// send the given characters as if they were typed
  var typeCharacters = function(s) {
    onInputData(s);
  }

  var clearTerminal = function() {
    // Get just the last entered line
    var currentLine = Espruino.Core.Terminal.getInputLine();
    if (currentLine==undefined)
      currentLine = { text : "", line : 0 };
    termText = currentLine.text.split("\n");
    // re-add > and : marks
    for (var l in termText)
      termText[l] = (l==0?">":":") + termText[l];
    // reset other stuff...
    termExtraText = {};
    // leave X cursor where it was...
    termCursorY -= currentLine.line; // move Y cursor back
    termControlChars = [];
    // finally update the HTML
    updateTerminal();
    // fire off a clear terminal processor
    Espruino.callProcessor("terminalClear");
  };

  var updateTerminal = function() {
    var terminal = document.getElementById("terminal");
    // gather a list of elements for each line
    elements = [];
    terminal.childNodes.forEach(n => {
      var ln;
      if (n.getAttribute && ((ln=n.getAttribute("lineNumber"))!==null) && !elements[ln]/*no dups*/) {
        elements[ln] = n;
      } else {
        n.remove(); // remove stuff that doesn't have a line number
      }
    });

    // remove extra lines if there are too many
    if (termText.length > MAX_LINES) {
      var removedLines = termText.length - MAX_LINES;
      termText = termText.slice(removedLines);
      termCursorY -= removedLines;
      var newTermExtraText = {};
      for (var i in termExtraText) {
        if (i>=removedLines)
          newTermExtraText[i-removedLines] = termExtraText[i];
      }
      termExtraText = newTermExtraText;

      // now renumber our elements (cycle them around)
      var newElements = [];
      for (i in elements) {
        var n = elements[0].getAttribute("lineNumber") - removedLines;
        if (n<0) { // if it's fallen off the bottom, delete it
          elements[i].remove();
        } else {
          elements[i].setAttribute("lineNumber", n);
          newElements[n] = elements[i];
        }
      }
      elements = newElements;
    }
    // remove elements if we have too many...
    for (i=termText.length;i<elements.length;i++)
      if (i in elements)
        elements[i].remove();
    // now write this to the screen
    // var t = [];
    for (var y in termText) {
      var line = termText[y];
      if (y == termCursorY) {
        var ch = Espruino.Core.Utils.getSubString(line,termCursorX,1);
        line = Espruino.Core.Utils.escapeHTML(
            Espruino.Core.Utils.getSubString(line,0,termCursorX)) +
            "<span class='terminal__cursor'>" + Espruino.Core.Utils.escapeHTML(ch) + "</span>" +
            Espruino.Core.Utils.escapeHTML(Espruino.Core.Utils.getSubString(line,termCursorX+1));
      } else {
        line = Espruino.Core.Utils.escapeHTML(line);
        // handle URLs
        line = line.replace(/(https?:\/\/[-a-zA-Z0-9@:%._+~#=/?]+)/g, '<a href="$1" target="_blank">$1</a>');
      }
      // detect inline images and link them in
      var m = line.match(/data:image\/\w+;base64,[\w+/=]+/);
      if (m) {
        var src = m[0];
        line = line.substr(0,m.index)+'<a href="'+src+'" download><img class="terminal-inline-image" src="'+src+'"/></a>'+line.substr(m.index+m[0].length);
        if (imageTimeout) clearTimeout(imageTimeout);
        imageTimeout = setTimeout(convertInlineImages, 1000);
      }

      // extra text is for stuff like tutorials
      if (termExtraText[y])
        line = termExtraText[y] + line;

      // Only update the elements if they need updating
      if (elements[y]===undefined) {
        var prev = y-1;
        while (prev>=0 && elements[prev]===undefined) prev--;
        var div = document.createElement("div");
        div.className = "termLine";
        div.setAttribute("lineNumber",y);
        div.innerHTML = line;
        elements[y] = div;
        if (prev<0) terminal.append(elements[y]);
        else elements[prev].insertAdjacentElement("afterend",elements[y]);
      } else if (elements[y].innerHTML!=line)
        elements[y].innerHTML = line;
    }
    // now show the line where the cursor is
    if (elements[termCursorY]!==undefined) {
      terminal.scrollTop = elements[termCursorY].offsetTop;
    }
    /* Move input box to the same place as the cursor, so Android devices
    keep that part of the screen in view */
    var cursor = document.getElementsByClassName("terminal__cursor");
    if (cursor.length) {
      var tPos = terminal.getBoundingClientRect();
      var pos = cursor[0].getBoundingClientRect();
      var terminalfocus = document.getElementById("terminalfocus");
      var x = Math.min(pos.left, terminal.offsetWidth);
      var y = Math.min(pos.top-tPos.top, terminal.height-terminalfocus.offsetHeight);
      terminalfocus.style.left=x+"px";
      terminalfocus.style.top=y+"px";
    }
  };

  function trimRight(str) {
    var s = str.length-1;
    while (s>0 && str[s]==" ") s--;
    return str.substr(0,s+1);
  }

  var handleReceivedCharacter = function (/*char*/ch) {
    function isUTF8StartChar(ch) {
      return (ch>=0xC2) && (ch<=0xF4);
    }
    function newCharacter(ch) {
      if (termText[termCursorY]===undefined) termText[termCursorY]="";
      termText[termCursorY] = trimRight(
          Espruino.Core.Utils.getSubString(termText[termCursorY],0,termCursorX) +
          String.fromCharCode(ch) +
          Espruino.Core.Utils.getSubString(termText[termCursorY],termCursorX+1));
      termCursorX++;
      // check for the 'prompt', eg '>' or 'debug>'
      // if we have it, send a 'terminalPrompt' message
      if (ch == ">".charCodeAt(0)) {
        var prompt = termText[termCursorY];
        if (prompt==">" || prompt=="debug>")
          Espruino.callProcessor("terminalPrompt", prompt);
      }
    }

    //console.log("IN = "+ch);
    if (termControlChars.length==0) {
      if (isUTF8StartChar(ch)) { // UTF8
        termControlChars = [ ch ];
      } else switch (ch) {
        case  8 : {
          if (termCursorX>0) termCursorX--;
        } break;
        case 10 : { // line feed
          Espruino.callProcessor("terminalNewLine", termText[termCursorY]);
          termCursorX = 0; termCursorY++;
          while (termCursorY >= termText.length) termText.push("");
        } break;
        case 13 : { // carriage return
          termCursorX = 0;
        } break;
        case 27 : {
          termControlChars = [ 27 ];
        } break;
        case 19 : break; // XOFF
        case 17 : break; // XON
        default : newCharacter(ch); // Else actually add character
      }
   } else if (isUTF8StartChar(termControlChars[0])) { // decode UTF8 chars
    termControlChars.push(ch);
    if ((ch&0xC0) == 0x80) { // it's valid
      var c = termControlChars[0], cp=c, ra=0;
      // work out first byte's value and how long this codepoint is
      if ((c&0xE0)==0xC0) { // 2-byte code starts with 0b110xxxxx
        cp=c&0x1F;ra=1;
      } else if ((c&0xF0)==0xE0) { // 3-byte code starts with 0b1110xxxx
        cp=c&0x0F;ra=2;
      } else if ((c&0xF8)==0xF0) { // 4-byte code starts with 0b11110xxx
        cp=c&0x07;ra=3;
      }
      // if we have enough data, decode it
      if (termControlChars.length >= ra) {
        for (var i=1;i<=ra;i++)
          cp = (cp<<6) | (termControlChars[i] & 0x3F);
        newCharacter(cp);
        termControlChars = [];
      }
    } else { // invalid!
      console.warn(`Invalid UTF8 sequence (${termControlChars.join(",")})`);
      termControlChars = [];
    }
   } else if (termControlChars[0]==27) { // Esc
     if (termControlChars[1]==91) { // Esc [
       if (termControlChars[2]==63) {
         if (termControlChars[3]==55) {
           if (ch!=108)
             console.log("Expected 27, 91, 63, 55, 108 - no line overflow sequence");
           termControlChars = [];
         } else {
           if (ch==55) {
             termControlChars = [27, 91, 63, 55];
           } else termControlChars = [];
         }
       } else {
         termControlChars = [];
         switch (ch) {
           case 63: termControlChars = [27, 91, 63]; break;
           case 65: if (termCursorY > 0) termCursorY--; break; // up  FIXME should add extra lines in...
           case 66: termCursorY++; while (termCursorY >= termText.length) termText.push(""); break;  // down FIXME should add extra lines in...
           case 67: termCursorX++; break; // right
           case 68: if (termCursorX > 0) termCursorX--; break; // left
           case 74: termText[termCursorY] = termText[termCursorY].substr(0,termCursorX); // Delete to right + down
                    termText = termText.slice(0,termCursorY+1);
                    break;
           case 75: termText[termCursorY] = termText[termCursorY].substr(0,termCursorX); break; // Delete to right
         }
       }
     } else {
       switch (ch) {
         case 91: {
           termControlChars = [27, 91];
         } break;
         default: {
           termControlChars = [];
         }
       }
     }
   } else termControlChars = [];
};


// ----------------------------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------------------------

  /// Set the callback(String) that gets called when the user presses a key. Returns the old one
  function setInputDataHandler( callback ) {
    var old = onInputData;
    onInputData = callback;
    return old;
  }

  /// Called when data comes OUT of Espruino INTO the terminal
  function outputDataHandler(readData) {
    if ("string" == typeof readData)
      readData = readData.split("").map(function(x) {return x.charCodeAt();});
    // Add data to our buffer
    var bufView=new Uint8Array(readData);
    searchData(bufView);
    for (var i=0;i<bufView.length;i++)
      displayData.push(bufView[i]);
    // If we haven't had data after 50ms, update the HTML
    if (displayTimeout == null)
      displayTimeout = window.setTimeout(function() {
        for (i in displayData)
          handleReceivedCharacter(displayData[i]);
        updateTerminal();
        displayData = [];
        displayTimeout = null;
      }, 50);
  }

  var receivedData = "";
  function searchData(bytes){
    var si,ei;
    for(var i = 0; i < bytes.length; i++) {
      receivedData += String.fromCharCode(bytes[i]);
    }
    si = receivedData.indexOf("<<<<<");
    if(si >= 0){
      receivedData = receivedData.substr(si);
      ei = receivedData.indexOf(">>>>>");
      if(ei > 0){
        receivedData = receivedData.substr(5,ei - 5);
        Espruino.callProcessor("getWatched",receivedData,function(){});
        receivedData = "";
      }
    } else{ receivedData = ""; }
  }

  /// Claim input and output of the Serial port
  function grabSerialPort() {
    // Ensure that keypresses go direct to the Espruino device
    Espruino.Core.Terminal.setInputDataHandler(function(d) {
      Espruino.Core.Serial.write(d);
    });
    // Ensure that data from Espruino goes to this terminal
    Espruino.Core.Serial.startListening(Espruino.Core.Terminal.outputDataHandler);
  }

  /// Get the current terminal line that we're on
  function getCurrentLine() {
    return termText.length-1;
  }

  /// Set extra text to display before a certain terminal line
  function setExtraText(line, text) {
    if (termExtraText[line] != text) {
      termExtraText[line] = text;
      updateTerminal();
    }
  }

  /// Clear all extra text that is to be displayed
  function clearExtraText() {
    termExtraText = {};
    updateTerminal();
  }

  /// Does the terminal have focus?
  function hasFocus() {
    return document.querySelector("#terminal").classList.contains("focus");
  }

  /// Give the terminal focus
  function focus() {
    document.getElementById("terminalfocus").focus();
  }

  // Is the terminal actually visible, or is it so small it can't be seen?
  function isVisible() {
    var terminal = document.getElementById("terminalfocus");
    return (terminal.offsetWidth > 20) && (terminal.offsetHeight > 20);
  }

  /** Get the Nth from latest terminal line (and the line number of it). 0=current line.
   * By terminal line we mean a line starting with '>' */
  function getInputLine(n) {
    if (n===undefined) n=0;
    var startLine = termText.length-1;
    while (startLine>=0 && !(n==0 && termText[startLine].substr(0,1)==">")) {
      if (termText[startLine].substr(0,1)==">") n--;
      startLine--;
    }
    if (startLine<0) return undefined;
    var line = startLine;
    var text = termText[line++].substr(1);
    while (line < termText.length && termText[line].substr(0,1)==":")
      text += "\n"+termText[line++].substr(1);
    return { line : startLine, text : text };
  }

  /** Get the Nth from latest line of text in the terminal (unlike getInputLine) */
  function getTerminalLine(n) {
    if (n===undefined) n=0;
    var line = termText.length-(1+n);
    if (line<0) return undefined;
    return termText[line];
  }

  /** Add a notification to the terminal (as HTML). If options.buttonclick is set
  then the first <button> inside the notification text
  will have a click handler registered

  options = {
      buttonclick // callback for if clicked
      noBorder // don't wrap in a green notification border
  }
  */
  function addNotification(text, options) {
    options = options||{};
    var line = getInputLine(0);
    line = (line===undefined)?0:line.line;
    if (!termExtraText[line]) termExtraText[line]="";
    if (!options.noBorder)
      text = '<div class="notification_text">'+text+'</div>';
    termExtraText[line] += text;
    updateTerminal();
    if (options.buttonclick) {
      var btn = elements[line].find("button");
      if (!btn.length) console.error("Espruino.Core.Terminal buttonclick set but no button");
      btn.on('click', options.buttonclick);
    }
  }

  Espruino.Core.Terminal = {
      init : init,

      getInputLine : getInputLine,
      getTerminalLine : getTerminalLine,
      getCurrentLine : getCurrentLine,
      isVisible : isVisible, // Is the terminal actually visible, or is it so small it can't be seen?
      hasFocus : hasFocus, // Does the termninal have focus?
      focus : focus, // Give this focus
      clearTerminal : clearTerminal, // Clear the contents of the terminal

      setExtraText : setExtraText,
      clearExtraText : clearExtraText,
      addNotification : addNotification, // wrapper around setExtraText to add advice to the terminal

      grabSerialPort : grabSerialPort,
      setInputDataHandler : setInputDataHandler,
      outputDataHandler : outputDataHandler,
      typeCharacters : typeCharacters
  };

})();
/* --------------------------------------------------------------
         EspruinoTools/core/codeWriter.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  The plugin that actually writes code out to Espruino
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    Espruino.Core.Config.add("RESET_BEFORE_SEND", {
      section : "Communications",
      name : "Reset before Send",
      description : "Reset Espruino before sending code from the editor pane?",
      type : "boolean",
      defaultValue : true
    });
    Espruino.Core.Config.add("STORE_LINE_NUMBERS", {
      section : "Communications",
      name : "Store line numbers",
      description : "Should Espruino store line numbers for each function? This uses one extra variable per function, but allows you to get source code debugging in the Web IDE",
      type : "boolean",
      defaultValue : true
    });

  }

  function writeToEspruino(code, callback) {
    /* hack around non-K&R code formatting that would have
    broken Espruino CLI's bracket counting */
    code = reformatCode(code);
    if (code === undefined) return; // it should already have errored

    // We want to make sure we've got a prompt before sending. If not,
    // this will issue a Ctrl+C
    Espruino.Core.Utils.getEspruinoPrompt(function() {
      // Make sure code ends in 2 newlines
      while (code[code.length-2]!="\n" || code[code.length-1]!="\n")
        code += "\n";

      // By sending an empty print, we remove the Espruino '>' prompt
      // which then allows us to see if upload has finished
      code = "\x10print()\n"+code;
      // If we're supposed to reset Espruino before sending...
      if (Espruino.Config.RESET_BEFORE_SEND) {
        // reset Espruino
        code = "\x10reset();\n"+code;
      }

      //console.log("Sending... "+data);
      Espruino.Core.Serial.write(code, true, function() {
        // give 5 seconds for sending with save and 2 seconds without save
        var count = Espruino.Config.SAVE_ON_SEND ? 50 : 20;
        setTimeout(function cb() {
          if (Espruino.Core.Terminal!==undefined &&
              !Espruino.Core.Terminal.getTerminalLine().startsWith(">")) {
            count--;
            if (count>0) {
              setTimeout(cb, 100);
            } else {
              Espruino.Core.Notifications.error("Prompt not detected - upload failed. Trying to recover...");
              Espruino.Core.Serial.write("\x03\x03echo(1)\n", false, callback);
            }
          } else {
            if (callback) callback();
          }
        }, 100);
      });
    });
  }

  /**
   * Parse and fix issues like `if (false)\n foo` in the root scope
   * @param {string} code 
   * @returns {string | undefined}
   */
  function reformatCode(code) {
    var APPLY_LINE_NUMBERS = false;
    var lineNumberOffset = 0;
    var ENV = Espruino.Core.Env.getData();
    if (ENV && ENV.VERSION_MAJOR && ENV.VERSION_MINOR) {
      if (ENV.VERSION_MAJOR>1 ||
          ENV.VERSION_MINOR>=81.086) {
        if (Espruino.Config.STORE_LINE_NUMBERS)
          APPLY_LINE_NUMBERS = true;
      }
    }
    /* There's only any point writing line numbers when we're saving to RAM. Otherwise we just
    end up applying line numbers to require("Storage").write lines. see https://github.com/espruino/EspruinoTools/pull/179 */
    if (Espruino.Config.SAVE_ON_SEND != 0) {
      APPLY_LINE_NUMBERS = false;
    }
    // Turn cr/lf into just lf (eg. windows -> unix)
    code = code.replace(/\r\n/g,"\n");
    // First off, try and fix funky characters
    for (let i=0;i<code.length;i++) {
      var ch = code.charCodeAt(i);
      if ((ch<32 || ch>255) && ch!=9/*Tab*/ && ch!=10/*LF*/ && ch!=13/*CR*/) {
        console.warn("codewriter> Unexpected character code "+ch+" at position "+i+". Replacing with ?");
        code = code.substr(0,i)+"?"+code.substr(i+1);
      }
    }

    /* Search for lines added to the start of the code by the module handler.
    Ideally there would be a better way of doing this so line numbers stayed correct,
    but this hack works for now. Fixes EspruinoWebIDE#140 */
    if (APPLY_LINE_NUMBERS) {
      var l = code.split("\n");
      let i = 0;
      while (l[i] && (l[i].substr(0,8)=="Modules." ||
                      l[i].substr(0,8)=="setTime(")) i++;
      lineNumberOffset = -i;
    }

    var resultCode = "\x10"; // 0x10 = echo off for line
    /** we're looking for:
     *   `a = \n b`
     *   `for (.....) \n X`
     *   `if (.....) \n X`
     *   `if (.....) { } \n else foo`
     *   `while (.....) \n X`
     *   `do \n X`
     *   `function (.....) \n X`
     *   `function N(.....) \n X`
     *   `var a \n , b`    `var a = 0 \n, b`
     *   `var a, \n b`     `var a = 0, \n b`
     *   `a \n . b`
     *   `foo() \n . b`
     *   `try { } \n catch \n () \n {}`
     *
     *   These are divided into two groups - where there are brackets
     *   after the keyword (statementBeforeBrackets) and where there aren't
     *   (statement)
     *
     *   We fix them by replacing \n with what you get when you press
     *   Alt+Enter (Ctrl + LF). This tells Espruino that it's a newline
     *   but NOT to execute.
     */
    var lex = Espruino.Core.Utils.getLexer(code);
    var brackets = 0;
    var curlyBrackets = 0;
    var statementBeforeBrackets = false;
    var statement = false;
    var varDeclaration = false;
    var lastIdx = 0;
    var lastTok = {str:""};
    var tok = lex.next();
    while (tok!==undefined) {
      var previousString = code.substring(lastIdx, tok.startIdx);
      var tokenString = code.substring(tok.startIdx, tok.endIdx);
      //console.log("codewriter> prev "+JSON.stringify(previousString)+"   next "+tokenString);

      /* Inserting Alt-Enter newline, which adds newline without trying
      to execute */
      if (brackets>0 || // we have brackets - sending the alt-enter special newline means Espruino doesn't have to do a search itself - faster.
          statement || // statement was before brackets - expecting something else
          statementBeforeBrackets ||  // we have an 'if'/etc
          varDeclaration || // variable declaration then newline
          tok.str=="," || // comma on newline - there was probably something before
          tok.str=="." || // dot on newline - there was probably something before
          tok.str=="+" || tok.str=="-" || // +/- on newline - there was probably something before
          tok.str=="=" || // equals on newline - there was probably something before
          tok.str=="else" || // else on newline
          lastTok.str=="else" || // else befgore newline
          tok.str=="catch" || // catch on newline - part of try..catch
          lastTok.str=="catch"
        ) {
        //console.log("codewriter> Possible"+JSON.stringify(previousString));
        previousString = previousString.replace(/\n/g, "\x1B\x0A");
      }

      var previousBrackets = brackets;
      if (tok.str=="(" || tok.str=="{" || tok.str=="[") brackets++;
      if (tok.str=="{") curlyBrackets++;
      if (tok.str==")" || tok.str=="}" || tok.str=="]") brackets--;
      if (tok.str=="}") curlyBrackets--;

      if (brackets==0) {
        if (tok.str=="for" || tok.str=="if" || tok.str=="while" || tok.str=="function" || tok.str=="throw") {
          statementBeforeBrackets = true;
          varDeclaration = false;
        } else if (tok.str=="var") {
          varDeclaration = true;
        } else if (tok.type=="ID" && lastTok.str=="function") {
          statementBeforeBrackets = true;
        } else if (tok.str=="try" || tok.str=="catch") {
          statementBeforeBrackets = true;
        } else if (tok.str==")" && statementBeforeBrackets) {
          statementBeforeBrackets = false;
          statement = true;
        } else if (["=","^","&&","||","+","+=","-","-=","*","*=","/","/=","%","%=","&","&=","|","|="].indexOf(tok.str)>=0) {
          statement = true;
        } else {
          if (tok.str==";") varDeclaration = false;
          statement = false;
          statementBeforeBrackets = false;
        }
      }
      /* If we're at root scope and had whitespace/comments between code,
      remove it all and replace it with a single newline and a
      0x10 (echo off for line) character. However DON'T do this if we had
      an alt-enter in the line, as it was there to stop us executing
      prematurely */
      if (previousBrackets==0 &&
          previousString.indexOf("\n")>=0 &&
          previousString.indexOf("\x1B\x0A")<0) {
        previousString = "\n\x10";
        // Apply line numbers to each new line sent, to aid debugger
        if (APPLY_LINE_NUMBERS && tok.lineNumber && (tok.lineNumber+lineNumberOffset)>0) {
          // Esc [ 1234 d
          // This is the 'set line number' command that we're abusing :)
          previousString += "\x1B\x5B"+(tok.lineNumber+lineNumberOffset)+"d";
        }
      }

      // add our stuff back together
      resultCode += previousString+tokenString;
      // next
      lastIdx = tok.endIdx;
      lastTok = tok;
      tok = lex.next();
    }
    //console.log(resultCode);
    if (brackets>0) {
      Espruino.Core.Notifications.error("You have more open brackets than close brackets. Please see the hints in the Editor window.");
      return undefined;
    }
    if (brackets<0) {
      Espruino.Core.Notifications.error("You have more close brackets than open brackets. Please see the hints in the Editor window.");
      return undefined;
    }
    return resultCode;
  }

  Espruino.Core.CodeWriter = {
    init : init,
    writeToEspruino : writeToEspruino, // call this to send to Espruino
    reformatCode : reformatCode  // Parse and fix issues like `if (false)\n foo` in the root scope
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/core/modules.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Automatically load any referenced modules
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    Espruino.Core.Config.add("MODULE_URL", {
      section : "Communications",
      name : "Module URL",
      description : "Where to search online for modules when `require()` is used. Can supply more than one URL, separated by '|'",
      type : "string",
      defaultValue : "https://www.espruino.com/modules|https://banglejs.com/apps/modules|./modules"
    });
    Espruino.Core.Config.add("MODULE_EXTENSIONS", {
      section : "Communications",
      name : "Module Extensions",
      description : "The file extensions to use for each module. These are checked in order and the first that exists is used. One or more file extensions (including the dot) separated by `|`",
      type : "string",
      defaultValue : ".min.js|.js"
    });
    Espruino.Core.Config.add("MODULE_AS_FUNCTION", {
      section : "Communications",
      name : "Modules uploaded as functions",
      description : "Espruino 1v90 and later ONLY. Upload modules as Functions, allowing any functions inside them to be loaded directly from flash when 'Save on Send' is enabled.",
      type : "boolean",
      defaultValue : true
    });

    Espruino.Core.Config.add("MODULE_PROXY_ENABLED", {
      section : "Communications",
      name : "Enable Proxy",
      description : "Enable Proxy for loading the modules when `require()` is used (only in native IDE)",
      type : "boolean",
      defaultValue : false
    });

    Espruino.Core.Config.add("MODULE_PROXY_URL", {
      section : "Communications",
      name : "Proxy URL",
      description : "Proxy URL for loading the modules when `require()` is used (only in native IDE)",
      type : "string",
      defaultValue : ""
    });

    Espruino.Core.Config.add("MODULE_PROXY_PORT", {
      section : "Communications",
      name : "Proxy Port",
      description : "Proxy Port for loading the modules when `require()` is used (only in native IDE)",
      type : "string",
      defaultValue : ""
    });

    // When code is sent to Espruino, search it for modules and add extra code required to load them
    Espruino.addProcessor("transformForEspruino", function(code, callback) {
      loadModules(code, callback);
    });

    // Append the 'getModule' processor as the last (plugins get initialized after Espruino.Core modules)
    Espruino.Plugins.CoreModules = {
      init: function() {
        Espruino.addProcessor("getModule", function(data, callback) {
          if (data.moduleCode!==undefined) { // already provided be previous getModule processor
            return callback(data);
          }

          fetchGetModule(data, callback);
        });
      }
    };
  }

  function isBuiltIn(module) {
    var d = Espruino.Core.Env.getData();
    // If we got data from the device itself, use that as the
    // definitive answer
    if ("string" == typeof d.MODULES)
      return d.MODULES.split(",").indexOf(module)>=0;
    // Otherwise try and figure it out from JSON
    if ("info" in d &&
        "builtin_modules" in d.info &&
        d.info.builtin_modules.indexOf(module)>=0)
      return true;
    // Otherwise assume we don't have it
    return false;
  }

  /** Find any instances of require(...) in the code string and return a list */
  var getModulesRequired = function(code) {
    var modules = [];

    var lex = Espruino.Core.Utils.getLexer(code);
    var tok = lex.next();
    var state = 0;
    while (tok!==undefined) {
      if (state==0 && tok.str=="require") {
        state=1;
      } else if (state==1 && tok.str=="(") {
        state=2;
      } else if (state==2 && (tok.type=="STRING")) {
        state=0;
        var module = tok.value;
        if (!isBuiltIn(module) && modules.indexOf(module)<0)
          modules.push(module);
      } else
        state = 0;
      tok = lex.next();
    }

    return modules;
  };

  /** Download modules from MODULE_URL/.. */
  function fetchGetModule(data, callback) {
    var fullModuleName = data.moduleName;

    // try and load the module the old way...
    console.log("loadModule("+fullModuleName+")");

    var urls = []; // Array of where to look for this module
    // var modName; // Simple name of the module
    if(Espruino.Core.Utils.isURL(fullModuleName)) {
      // modName = fullModuleName.substr(fullModuleName.lastIndexOf("/") + 1).split(".")[0];
      urls = [ fullModuleName ];
    } else {
      // modName = fullModuleName;
      Espruino.Config.MODULE_URL.split("|").forEach(function (url) {
        url = url.trim();
        if (url.length!=0)
        Espruino.Config.MODULE_EXTENSIONS.split("|").forEach(function (extension) {
          urls.push(url + "/" + fullModuleName + extension);
        })
      });
    }

    // Recursively go through all the urls
    (function download(urls) {
      if (urls.length==0) {
        return callback(data);
      }
      var dlUrl = urls[0];
      Espruino.Core.Utils.getURL(dlUrl, function (code) {
        if (code!==undefined) {
          // we got it!
          data.moduleCode = code;
          data.isMinified = dlUrl.substr(-7)==".min.js";
          return callback(data);
        } else {
          // else try next
          download(urls.slice(1));
        }
      });
    })(urls);
  }


  /** Called from loadModule when a module is loaded. Parse it for other modules it might use
   *  and resolve dfd after all submodules have been loaded */
  function moduleLoaded(resolve, requires, modName, data, loadedModuleData, alreadyMinified){
    // Check for any modules used from this module that we don't already have
    var newRequires = getModulesRequired(data);
    console.log(" - "+modName+" requires "+JSON.stringify(newRequires));
    // if we need new modules, set them to load and get their promises
    var newPromises = [];
    for (var i in newRequires) {
      if (requires.indexOf(newRequires[i])<0) {
        console.log("   Queueing "+newRequires[i]);
        requires.push(newRequires[i]);
        newPromises.push(loadModule(requires, newRequires[i], loadedModuleData));
      } else {
        console.log("   Already loading "+newRequires[i]);
      }
    }

    var loadProcessedModule = function (module) {
      // if we needed to load something, wait until it's loaded before resolving this
      Promise.all(newPromises).then(function(){
        // add the module to end of our array
        if (Espruino.Config.MODULE_AS_FUNCTION) // check for '//' is just in case, most minified modules shouldn't have it
          loadedModuleData.push("Modules.addCached(" + JSON.stringify(module.name) + ",function(){" + module.code.trim() + (module.code.includes("//")?"\n":"") + "});");
        else
          loadedModuleData.push("Modules.addCached(" + JSON.stringify(module.name) + "," + JSON.stringify(module.code) + ");");
        // We're done
        resolve();
      });
    }
    Espruino.callProcessor("transformModuleForEspruino", {code:data,name:modName,minified:alreadyMinified}, loadProcessedModule);
  }

  /** Given a module name (which could be a URL), try and find it. Return
   * a deferred thingybob which signals when we're done. */
  function loadModule(requires, fullModuleName, loadedModuleData) {
    return new Promise(function(resolve, reject) {
      // First off, try and find this module using callProcessor
      Espruino.callProcessor("getModule",
        { moduleName:fullModuleName, moduleCode:undefined, isMinified:false },
        function(data) {
          if (data.moduleCode===undefined) {
            Espruino.Core.Notifications.warning("Module "+fullModuleName+" not found");
            return resolve();
          }

          // great! it found something. Use it.
          moduleLoaded(resolve, requires, fullModuleName, data.moduleCode, loadedModuleData, data.isMinified);
        });
    });
  }

  /** Finds instances of 'require' and then ensures that
   those modules are loaded into the module cache beforehand
   (by inserting the relevant 'addCached' commands into 'code' */
  function loadModules(code, callback){
    var loadedModuleData = [];
    var requires = getModulesRequired(code);
    if (requires.length == 0) {
      // no modules needed - just return
      callback(code);
    } else {
      Espruino.Core.Status.setStatus("Loading modules");
      // Kick off the module loading (each returns a promise)
      var promises = requires.map(function (moduleName) {
        return loadModule(requires, moduleName, loadedModuleData);
      });
      // When all promises are complete
      Promise.all(promises).then(function(){
        callback(loadedModuleData.join("\n") + "\n" + code);
      });
    }
  }


  Espruino.Core.Modules = {
    init : init
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/core/env.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Board Environment variables (process.env) - queried when board connects
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var environmentData = {};
  var boardData = {};

  function init() {
    Espruino.Core.Config.add("ENV_ON_CONNECT", {
      section : "Communications",
      name : "Request board details on connect",
      description : 'Just after the board is connected, should we query `process.env` to find out which board we\'re connected to? '+
                    'This enables the Web IDE\'s code completion, compiler features, and firmware update notice.',
      type : "boolean",
      defaultValue : true,
    });

    Espruino.addProcessor("connected", function(data, callback) {
      // Give us some time for any stored data to come in
      setTimeout(queryBoardProcess, 200, data, callback);
    });
  }

  function setFirmwareVersion(v) {
    environmentData.VERSION = v;
    var vIdx = v.indexOf("v");
    if (vIdx>=0) {
      environmentData.VERSION_MAJOR = parseInt(v.substr(0,vIdx));
      var minor = v.substr(vIdx+1);
      var dot = minor.indexOf(".");
      if (dot>=0)
        environmentData.VERSION_MINOR = parseInt(minor.substr(0,dot)) + parseInt(minor.substr(dot+1))*0.001;
      else
        environmentData.VERSION_MINOR = parseFloat(minor);
    }
  }

  function queryBoardProcess(data, callback) {
    if ((!Espruino.Config.ENV_ON_CONNECT) ||
        (Espruino.Core.MenuFlasher && Espruino.Core.MenuFlasher.isFlashing())) {
      return callback(data);
    }

    Espruino.Core.Utils.executeExpression("process.env", function(result) {
      var json = {};
      if (result!==undefined) {
        try {
          json = JSON.parse(result);
        } catch (e) {
          console.log("JSON parse failed - " + e + " in " + JSON.stringify(result));
        }
      }
      if (Object.keys(json).length==0) {
        Espruino.Core.Notifications.error("Unable to retrieve board information.\nConnection Error?");
        // make sure we don't remember a previous board's info
        json = {
          VERSION : undefined,
          BOARD : undefined,
          MODULES : undefined,
          EXPTR : undefined
        };
      } else {
        if (json.BOARD && json.VERSION)
          Espruino.Core.Notifications.info("Found " +json.BOARD+", "+json.VERSION);
      }
      // now process the enviroment variables
      for (var k in json) {
        boardData[k] = json[k];
        environmentData[k] = json[k];
      }
      if (environmentData.VERSION)
        setFirmwareVersion(environmentData.VERSION);

      Espruino.callProcessor("environmentVar", environmentData, function(envData) {
        environmentData = envData;
        callback(data);
      });
    });
  }

  /** Get all data merged in from the board */
  function getData() {
    return environmentData;
  }

  /** Get just the board's environment data */
  function getBoardData() {
    return boardData;
  }

  /** Get a list of boards that we know about */
  function getBoardList(callback) {
    var jsonDir = Espruino.Config.BOARD_JSON_URL;

    // ensure jsonDir ends with slash
    if (jsonDir.indexOf('/', jsonDir.length - 1) === -1) {
      jsonDir += '/';
    }

    Espruino.Core.Utils.getJSONURL(jsonDir + "boards.json", function(boards){
      // now load all the individual JSON files
      var promises = [];
      for (var boardId in boards) {
        promises.push((function() {
          var id = boardId;
          return new Promise(function(resolve, reject) {
            Espruino.Core.Utils.getJSONURL(jsonDir + boards[boardId].json, function (data) {
              boards[id]["json"] = data;
              resolve();
            });
          });
        })());
      }

      // When all are loaded, load the callback
      Promise.all(promises).then(function() {
        callback(boards);
      });
    });
  }

  Espruino.Core.Env = {
    init : init,
    getData : getData,
    getBoardData : getBoardData,
    getBoardList : getBoardList,
    setFirmwareVersion : setFirmwareVersion
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/core/flasher.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Actual low-level code for flashing Espruino Devices
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var dataReceived = undefined; // listener for when data is received
  var bytesReceived = []; // list of characters for when no handler is specified

  var ACK = 0x79;
  var NACK = 0x1F;
  var DEFAULT_FLASH_OFFSET = 1024*10; /* Skip size of F1 bootloader by default */

  var setStatus = function() {};

  function init() {
  }

  var initialiseChip = function(callback, timeout) {
    setStatus("Initialising...");
    var iTimeout = setTimeout(function() {
      dataReceived = undefined;
      clearInterval(iPoll);
      //callback("Can't find STM32 bootloader. Make sure the chip is reset with BOOT0=1 and BOOT1=0");
      callback("Can't find STM32 bootloader. Make sure the chip is reset into bootloader mode by holding down BTN1 while pressing RST");
    }, (timeout==undefined)?10000:timeout);
    var iPoll = setInterval(function() {
      console.log("Sending... 0x7F");
      Espruino.Core.Serial.write("\x7f", false);
    }, 70);
    dataReceived = function (c) {
      console.log("got "+c);
      if (c==ACK || c==NACK) {
        clearTimeout(iTimeout);
        clearInterval(iPoll);
        setStatus("Initialised.");
        // wait for random extra data...
        dataReceived = function(c){
          console.log("Already ACKed but got "+c);
        };
        setTimeout(function() {
          dataReceived = undefined;
          // finally call callback
          bodgeClock(callback);
        }, 500);
      }
    };
  };

  var waitForACK = function(callback, timeout) {
    var ms = timeout?timeout:1000;
    var iTimeout = setTimeout(function() {
      dataReceived = undefined;
      callback("Timeout waiting for ACK - "+ms+"ms");
    }, ms);
    dataReceived = function (c) {
      //console.log("Got data "+JSON.stringify(c));
      dataReceived = undefined;
      if (c==ACK) {
        clearTimeout(iTimeout);
        callback(undefined);
      } else
        callback("Expected ACK but got "+c);
    };
  };

  var sendData = function(data, callback, timeout) {
    var s = "";
    var chksum = 0;
    for (var i in data) {
      chksum = chksum ^ data[i];
      s += String.fromCharCode(data[i]);
    }
    Espruino.Core.Serial.write(s + String.fromCharCode(chksum), false);
    /* wait for ACK *NOW* - not in the write callback, as by that time we
    may have already received the ACK we were looking for */
    waitForACK(callback, timeout);
  };

  var receiveData = function(count, callback, timeout) {
    var data = new Uint8Array(count);
    var dataCount = 0;
    var iTimeout = setTimeout(function() {
      dataReceived = undefined;
      callback("Timeout reading "+count+" bytes");
    }, timeout?timeout:2000);
    dataReceived = function (c) {
      data[dataCount++] = c;
      if (dataCount == count) {
        clearTimeout(iTimeout);
        dataReceived = undefined;
        callback(undefined,data);
      }
    };
  };

  var sendCommand = function(command, callback) {
    Espruino.Core.Serial.write(String.fromCharCode(command) + String.fromCharCode(0xFF ^ command), false);
    /* wait for ACK *NOW* - not in the write callback, as by that time we
    may have already received the ACK we were looking for */
    waitForACK(callback);
  };

  var eraseChip = function(callback) {
    Espruino.Core.Status.setStatus("Erasing...");
    // Extended erase
    sendCommand(0x44, function(err) {
      if (err) { callback(err); return; }
      console.log("We may be some time...");
      sendData([0xFF,0xFF], function(err) {
        if (err) { callback(err); return; }
        callback(undefined);
      }, 20000/*timeout*/);
    });
  };

  var readData = function(callback, addr, readBytes) {
    console.log("Reading "+readBytes+" bytes from 0x"+addr.toString(16)+"...");
    // send read command
    sendCommand(0x11, function(err) {
      if (err) {
        console.log("Error sending command ("+err+").");
        callback(err);
        return;
      }
      // send address
      sendData([(addr>>24)&0xFF,(addr>>16)&0xFF,(addr>>8)&0xFF,addr&0xFF], function(err) {
        if (err) {
          console.log("Error sending address. ("+err+")");
          callback(err);
          return;
        }
        // send amount of bytes we want
        sendData([readBytes-1], function(err) {
          if (err) {
            console.log("Error while reading. ("+err+")");
            callback(err);
            return;
          }
          receiveData(readBytes, /*function(err) {
            if (err) {
              console.log("Error while reading. retrying...");
              initialiseChip(function (err) {
                if (err) callback(err);
                else readData(callback, addr, readBytes);
              }, 10000);
              return;
            }
            callback(undefined, data);
          }*/callback, 1000);
        }, 2000/*timeout*/);
      });
    });
  };

  var bodgeClock = function(callback) {
    /* 1v43 bootloader ran APB1 at 9Mhz, which isn't enough for
    some STM32 silicon, which has a bug. Instead, set the APB1 clock
    using the bootloader write command, which will fix it up enough for
    flashing.   */
    var RCC_CFGR = 0x40021004;
    readData(function(err, data) {
      if (err) return callback(err);
      var word = (data[3]<<24) | (data[2]<<16) | (data[1]<<8) | data[0];
      console.log("RCC->CFGR = "+word);
      var newword = (word&0xFFFFF8FF) | 0x00000400;
      if (newword==word) {
        console.log("RCC->CFGR is correct");
        callback(undefined);
      } else {
        console.log("Setting RCC->CFGR to "+newword);
        writeData(callback, RCC_CFGR, [newword&0xFF, (newword>>8)&0xFF, (newword>>16)&0xFF, (newword>>24)&0xFF]);
      }
    }, RCC_CFGR, 4);
  };

  var writeData = function(callback, addr, data) {
    if (data.length>256) callback("Writing too much data");
    console.log("Writing "+data.length+" bytes at 0x"+addr.toString(16)+"...");
    // send write command
    sendCommand(0x31, function(err) {
      if (err) {
        console.log("Error sending command ("+err+"). retrying...");
        initialiseChip(function (err) {
          if (err) callback(err);
          else writeData(callback, addr, data);
        }, 30000);
        return;
      }
      // send address
      sendData([(addr>>24)&0xFF,(addr>>16)&0xFF,(addr>>8)&0xFF,addr&0xFF], function(err) {
        if (err) {
          console.log("Error sending address ("+err+"). retrying...");
          initialiseChip(function (err) {
            if (err) callback(err);
            else writeData(callback, addr, data);
          }, 30000);
          return;
        }
        // work out data to send
        var sData = [ data.length-1 ];
        // for (var i in data) doesn't just do 0..data.length-1 in node!
        for (var i=0;i<data.length;i++) sData.push(data[i]&0xFF);
        // send data
        sendData(sData, function(err) {
          if (err) {
            console.log("Error while writing ("+err+"). retrying...");
            initialiseChip(function (err) {
              if (err) callback(err);
              else writeData(callback, addr, data);
            }, 30000);
            return;
          }
          callback(undefined); // done
        }, 2000/*timeout*/);
      });
    });
  };

  var writeAllData = function(binary, flashOffset, callback) {
    var chunkSize = 256;
    console.log("Writing "+binary.byteLength+" bytes");
    Espruino.Core.Status.setStatus("Writing flash...",  binary.byteLength);
    var writer = function(offset) {
      if (offset>=binary.byteLength) {
        Espruino.Core.Status.setStatus("Write complete!");
        callback(undefined); // done
        return;
      }
      var len = binary.byteLength - offset;
      if (len > chunkSize) len = chunkSize;
      var data = new Uint8Array(binary, offset, len);
      writeData(function(err) {
        if (err) { callback(err); return; }
        Espruino.Core.Status.incrementProgress(chunkSize);
        writer(offset + chunkSize);
      }, 0x08000000 + offset, data);
    };
    writer(flashOffset);
  };

  var readAllData = function(binaryLength, flashOffset, callback) {
    var data = new Uint8Array(flashOffset);
    var chunkSize = 256;
    console.log("Reading "+binaryLength+" bytes");
    Espruino.Core.Status.setStatus("Reading flash...",  binaryLength);
    var reader = function(offset) {
      if (offset>=binaryLength) {
        Espruino.Core.Status.setStatus("Read complete!");
        callback(undefined, data); // done
        return;
      }
      var len = binaryLength - offset;
      if (len > chunkSize) len = chunkSize;
      readData(function(err, dataChunk) {
        if (err) { callback(err); return; }
        for (var i in dataChunk)
          data[offset+i] = dataChunk[i];
        Espruino.Core.Status.incrementProgress(chunkSize);
        reader(offset + chunkSize);
      }, 0x08000000 + offset, chunkSize);
    };
    reader(flashOffset);
  };

  function flashBinaryToDevice(binary, flashOffset, callback, statusCallback) {
    setStatus = function(x) {
      if (!Espruino.Core.Status.hasProgress())
        Espruino.Core.Status.setStatus(x);
      if (statusCallback) statusCallback(x);
    }
    if (typeof flashOffset === 'function') {
      // backward compatibility if flashOffset is missed
      callback = flashOffset;
      flashOffset = null;
    }

    if (!flashOffset && flashOffset !== 0) {
      flashOffset = DEFAULT_FLASH_OFFSET;
    }

    if (typeof binary == "string") {
      var buf = new ArrayBuffer(binary.length);
      var a = new Uint8Array(buf);
      for (var i=0;i<binary.length;i++)
        a[i] = binary.charCodeAt(i);
      binary = buf;
    }
    // add serial listener
    dataReceived = undefined;
    Espruino.Core.Serial.startListening(function (readData) {
      var bufView=new Uint8Array(readData);
      //console.log("Got "+bufView.length+" bytes");
      for (var i=0;i<bufView.length;i++) bytesReceived.push(bufView[i]);
      if (dataReceived!==undefined) {
        for (var i=0;i<bytesReceived.length;i++) {
          if (dataReceived===undefined) console.log("OH NO!");
          dataReceived(bytesReceived[i]);
        }
        bytesReceived = [];
      }
    });
    Espruino.Core.Serial.setBinary(true);
    var hadSlowWrite = Espruino.Core.Serial.isSlowWrite();
    Espruino.Core.Serial.setSlowWrite(false, true/*force*/);
    var oldHandler;
    if (Espruino.Core.Terminal) {
      oldHandler = Espruino.Core.Terminal.setInputDataHandler(function() {
        // ignore keyPress from terminal during flashing
      });
    }
    var finish = function(err) {
      Espruino.Core.Serial.setSlowWrite(hadSlowWrite);
      Espruino.Core.Serial.setBinary(false);
      if (Espruino.Core.Terminal)
        Espruino.Core.Terminal.setInputDataHandler(oldHandler);
      callback(err);
    };
    // initialise
    initialiseChip(function (err) {
      if (err) { finish(err); return; }
      setStatus("Erasing...");
      eraseChip(function (err) {
        if (err) { finish(err); return; }
        setStatus("Writing Firmware...");
        writeAllData(binary, flashOffset, function (err) {
          if (err) { finish(err); return; }
          finish();
        });
      });
      /*readAllData(binary.byteLength, function(err,chipData) {
        if (err) {
          finish(err);
          return;
        }
        var errors = 0;
        var needsErase = false;
        var binaryData = new Uint8Array(binary, 0, binary.byteLength);
        for (var i=FLASH_OFFSET;i<binary.byteLength;i++) {
          if (binaryData[i]!=chipData[i]) {
            if (chipData[i]!=0xFF) needsErase = true;
            console.log(binaryData[i]+" vs "+data[i]);
            errors++;
          }
        }
        console.log(errors+" differences, "+(needsErase?"needs erase":"doesn't need erase"));
      });*/
    });
  }

  function flashDevice(url, flashOffset, callback, statusCallback) {
    Espruino.Core.Utils.getBinaryURL(url, function (err, binary) {
      if (err) { callback(err); return; }
      console.log("Downloaded "+binary.byteLength+" bytes");
      flashBinaryToDevice(binary, flashOffset, callback, statusCallback);
    });
  }


  function resetDevice(callback) {
    // add serial listener
    dataReceived = undefined;
    Espruino.Core.Serial.startListening(function (readData) {
      var bufView=new Uint8Array(readData);
      //console.log("Got "+bufView.length+" bytes");
      for (var i=0;i<bufView.length;i++) bytesReceived.push(bufView[i]);
      if (dataReceived!==undefined) {
        for (var i=0;i<bytesReceived.length;i++) {
          if (dataReceived===undefined) console.log("OH NO!");
          dataReceived(bytesReceived[i]);
        }
        bytesReceived = [];
      }
    });
    Espruino.Core.Serial.setBinary(true);
    var hadSlowWrite = Espruino.Core.Serial.isSlowWrite();
    Espruino.Core.Serial.setSlowWrite(false, true/*force*/);
    var oldHandler = Espruino.Core.Terminal.setInputDataHandler(function() {
      // ignore keyPress from terminal during flashing
    });
    var finish = function(err) {
      Espruino.Core.Serial.setSlowWrite(hadSlowWrite);
      Espruino.Core.Serial.setBinary(false);
      Espruino.Core.Terminal.setInputDataHandler(oldHandler);
      callback(err);
    };

    // initialise
    initialiseChip(function (err) {
      if (err) return finish(err);
      var data = new Uint8Array([0x04,0x00,0xFA,0x05]);
      var addr = 0xE000ED0C;
      console.log("Writing "+data.length+" bytes at 0x"+addr.toString(16)+"...");
      // send write command
      sendCommand(0x31, function(err) {
        if (err) return finish(err);
        // send address
        sendData([(addr>>24)&0xFF,(addr>>16)&0xFF,(addr>>8)&0xFF,addr&0xFF], function(err) {
          if (err) return finish(err);
          // work out data to send
          // for (var i in data) doesn't just do 0..data.length-1 in node!
          for (var i=0;i<data.length;i++) sData.push(data[i]&0xFF);
          var s = "";
          var chksum = 0;
          for (var i in sData) {
            chksum = chksum ^ sData[i];
            s += String.fromCharCode(sData[i]);
          }
          Espruino.Core.Serial.write(s + String.fromCharCode(chksum), false, finish);
        }, 2000/*timeout*/);
      });
    });
  }

  Espruino.Core.Flasher = {
    init : init,
    flashDevice : flashDevice,
    flashBinaryToDevice : flashBinaryToDevice,
    resetDevice : resetDevice
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/core/flasherESP8266.js
   -------------------------------------------------------------- */
/**
 Copyright 2020 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Firmware updater for ESP8266 in Espruino WiFi
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  const BLOCK_SIZE = 0x400;
  // var uart;
  var uartLine = "";
  var packetHandler;


  function init() {
  }

  /**
   * @typedef {Object} FlasherOptions
   * @property {ArrayBuffer} binary
   * @property {(status: string) => void} cbStatus
   * @property {(err: Error) => void} cbDone
   * @property {string} serialDevice Serial2
   * @property {string} serialRx A3
   * @property {string} serialTx A2
   * @property {string} chBoot A14
   * @property {string} chPD A13
   */

  /**
   * @param {FlasherOptions} options
   * @returns {FlasherOptions}
   */
  function defaultOptions(options) {
    options.serialDevice = options.serialDevice||"Serial2";
    options.serialRx = options.serialRx||"A3";
    options.serialTx = options.serialTx||"A2";
  }

  /** @param {FlasherOptions} options  */
  function flashDevice(options) {
    if (!options.binary) throw new Error("Needs binary");
    defaultOptions(options);

    var prevReader = Espruino.Core.Serial.startListening(function (buffer) {
      var bufView = new Uint8Array(buffer);
      for (var i=0;i<bufView.length;i++)
        uartLine += String.fromCharCode(bufView[i]);
      var l = uartLine.split("\n");
        while(l.length>1) {
          var a = l.shift();
          console.log(">>>",a);
          try {
          if (packetHandler) packetHandler(Espruino.Core.Utils.parseRJSON(a));
          } catch(e) { console.log("Unable to decode"); }
        }
        uartLine = l[0];
    });
    Espruino.Core.Serial.setBinary(true);
    var hadSlowWrite = Espruino.Core.Serial.isSlowWrite();
    Espruino.Core.Serial.setSlowWrite(false, true/*force*/);
    var oldHandler = Espruino.Core.Terminal.setInputDataHandler(function() {
      // ignore keyPress from terminal during flashing
    });
    function finish() {
      Espruino.Core.Serial.startListening(prevReader);
      Espruino.Core.Serial.setSlowWrite(hadSlowWrite);
      Espruino.Core.Serial.setBinary(false);
      Espruino.Core.Terminal.setInputDataHandler(oldHandler);
      Espruino.Core.Serial.close();
    }

    setupEspruino(options).
    then(()=>cmdSync(options)).
    then(() => cmdFlash(options)).
    then(() => unsetupEspruino(options)).
    then(function() {
      console.log("Complete!");
      finish();
      if (options.cbDone) options.cbDone();
    }).catch(function(error) {
      console.log("Error!", error);
      finish();
      if (options.cbDone) options.cbDone(error);
    });
  }

/**
 * @param {FlasherOptions} options
 * @param {number} cmd
 * @param {ArrayBuffer} data
 */
function wr(options,cmd,data) {
  //console.log("Write",cmd,data.length,data);
  if (typeof data !== "string")
    data = String.fromCharCode.apply(null,data);
  // calculate crc
  var crc = 0xEF;
  for (var i=(cmd==3)?16:0;i<data.length;i++) crc^=data.charCodeAt(i);
  // do packet
  var pk = String.fromCharCode(0,cmd, data.length&255, data.length>>8, crc,0,0,0) + data;
  pk = pk.replace(/\xDB/g,"\xDB\xDD").replace(/\xC0/g,"\xDB\xDC");
  pk = "\xC0"+pk+"\xC0";
  //console.log("OUT: ",pk.length,pk.split("").map(x=>x.charCodeAt().toString(16).padStart(2,'0')).join(" "));
  Espruino.Core.Serial.write(`\x10n="${Espruino.Core.Utils.btoa(pk)}";${options.serialDevice}.write(atob(n))\n`, false);
}

function sendCmd(options, cmd, data) {
  return new Promise((resolve,reject)=>{
    wr(options, cmd, data);
    packetHandler = function(d) {
      //console.log(d);
      packetHandler = undefined;
      if (d.cmd==cmd && d.data.charCodeAt(0)==0) resolve();
      else reject("Unexpected response "+JSON.stringify(d));
    };
  });
}

/** @param {FlasherOptions} options  */
function setupEspruino(options) {
  if (options.cbStatus) options.cbStatus("Configuring Espruino...");
  return new Promise((resolve,reject)=>{
    Espruino.Core.Serial.write('\x03\x10reset()\n', false, function() {
      setTimeout(function() {
          console.log("Start Wifi, add handler");
          Espruino.Core.Serial.write(`\x10${options.serialDevice}.setup(115200, { rx: ${options.serialRx}, tx : ${options.serialTx} });
\x10var packetHandler, packetData="", OUT=eval(process.env.CONSOLE);
\x10${options.serialDevice}.on('data', function(d) {
  packetData+=d;
  if (packetData[0]!="\\xc0") {
    var i = packetData.indexOf("\\xc0");
    if (i>0) packetData=packetData.substr(i);
  }
  while (packetData[0]=="\\xc0") {
    var e = packetData.indexOf("\\xc0",1);
    if (e<0) break;
    var packet = packetData.substr(1,e-1);
    var len = packet.charCodeAt(2)|(packet.charCodeAt(3)<<8);
    OUT.println(JSON.stringify({
      dir : packet.charCodeAt(0),
      cmd : packet.charCodeAt(1),
      len: len,
      data: packet.substr(8, len)
    }));
    packetData=packetData.substr(e+1);
  }
});
\x10${options.chPD?`digitalWrite(${options.chPD}, 0);`:``/*make sure WiFi starts off*/}
\x10${options.chBoot?`digitalWrite(${options.chBoot}, 0);`:`` /* into of boot mode */}
\x10${options.chPD?`digitalWrite(${options.chPD}, 1);`:`` /* turn on wifi */}
`, false, function() {
            console.log("Handler added");
            resolve();
          });
        }, 1000);
    });
  });
}

/** @param {FlasherOptions} options  */
function unsetupEspruino(options) {
  if (options.cbStatus) options.cbStatus("Resetting Espruino...");
  return new Promise((resolve,reject)=>{
    Espruino.Core.Serial.write('\x03\x10reset()\n', false, function() {
      setTimeout(function() {
        resolve();
      }, 1000);
    });
  });
}

/** @param {FlasherOptions} options  */
function cmdSync(options) {
  console.log("Syncing...");
  return new Promise((resolve,reject)=>{
    // var success = false;
    var interval;
    packetHandler = function(d) {
      if (d.cmd==8) {
        if (interval) {
          clearInterval(interval);
          interval = undefined;
        }
        packetHandler = undefined;
        console.log("Sync complete!");
        setTimeout(function() {
          // allow time for other responses
          resolve();
        }, 500);
      }
    }
    var tries = 20;
    interval = setInterval(function() {
      if (tries-- <= 0) {
        clearInterval(interval);
        return reject("No response to sync");
      }
      if (options.cbStatus) options.cbStatus("Syncing...");
      var d = new Uint8Array(36);
      d.fill(0x55);
      d.set([0x07,0x07,0x12,0x20]);
      wr(options, 8 /* SYNC */, d);
    }, 500);
  });
}

/** @param {FlasherOptions} options  */
function cmdFlash(options) {
  var binary = new Uint8Array(options.binary);
  var blockCount = Math.floor((binary.length + (BLOCK_SIZE-1)) / BLOCK_SIZE);
  console.log(`Start Flashing, ${blockCount} blocks of ${BLOCK_SIZE} bytes`);
  var d = new Uint32Array([
    blockCount*BLOCK_SIZE, // erase size
    blockCount, // # packets
    BLOCK_SIZE, // bytes per packet
    0 // flash offset
  ]);
  var idx = 0;
  return sendCmd(options, 2 /* FLASH_BEGIN */, new Uint8Array(d.buffer)).then(function flash() {
    console.log("Block "+idx);
    if (options.cbStatus) options.cbStatus(`Writing Block ${idx} / ${blockCount}`, idx / blockCount);
    if (idx>=blockCount) return true;
    d = new Uint8Array(16 + BLOCK_SIZE);
    d.fill(255);
    (new Uint32Array(d.buffer)).set([
      BLOCK_SIZE, // data size
      idx, // sequence
      0,0
    ]);
    d.set(new Uint8Array(binary.buffer, BLOCK_SIZE*idx, BLOCK_SIZE), 16);
    idx++;
    return sendCmd(options, 3 /* FLASH_DATA */, d).then(flash);
  });
}

/**
 * @param {FlasherOptions} options
 * @param {(version: string) => void} callback
 */
function getFirmwareVersion(options, callback) {
  defaultOptions(options);
  Espruino.Core.Serial.write('\x03\x10reset()\n', false, function() {
    setTimeout(function() {
      var cmd = "\x10\n";
      if (options.chPD && options.chBoot)
        cmd = `\x10digitalWrite(${options.chPD}, 0);/*WiFi off*/digitalWrite(${options.chBoot}, 1);/*no boot*/digitalWrite(${options.chPD}, 1);/*WiFi On*/\n`;
      else if (options.chPD)
        cmd = `\x10digitalWrite(${options.chPD}, 1);/*WiFi On*/\n`;

      Espruino.Core.Serial.write(cmd, false, function() {
        setTimeout(function() {
          var result = "";
          var prevReader = Espruino.Core.Serial.startListening(function (buffer) {
            var bufView = new Uint8Array(buffer);
            for (var i=0;i<bufView.length;i++)
              result += String.fromCharCode(bufView[i]);
          });
          Espruino.Core.Serial.write(`\x10${options.serialDevice}.pipe(eval(process.env.CONSOLE));${options.serialDevice}.setup(115200, { rx: ${options.serialRx}, tx : ${options.serialTx} });${options.serialDevice}.print("AT+GMR\\r\\n");\n`, false, function() {
            setTimeout(function() {
              Espruino.Core.Serial.write('\x03\x10reset()\n', false, function() {
                Espruino.Core.Serial.startListening(prevReader);
                callback(result.trim());
              });
            }, 1500);
          });
        }, 500);
      });
    }, 500);
  });
}

  Espruino.Core.FlasherESP8266 = {
    init : init,
    flashDevice : flashDevice,
    getFirmwareVersion : getFirmwareVersion,
  };
}());
/* --------------------------------------------------------------
         js/libs/secure-dfu.js
   -------------------------------------------------------------- */
!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).SecureDfu=e()}}(function(){return function o(s,a,c){function u(t,e){if(!a[t]){if(!s[t]){var n="function"==typeof require&&require;if(!e&&n)return n(t,!0);if(f)return f(t,!0);var r=new Error("Cannot find module '"+t+"'");throw r.code="MODULE_NOT_FOUND",r}var i=a[t]={exports:{}};s[t][0].call(i.exports,function(e){return u(s[t][1][e]||e)},i,i.exports,o,s,a,c)}return a[t].exports}for(var f="function"==typeof require&&require,e=0;e<c.length;e++)u(c[e]);return u}({1:[function(e,t,n){"use strict";var r,i=this&&this.__extends||(r=function(e,t){return(r=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n])})(e,t)},function(e,t){function n(){this.constructor=e}r(e,t),e.prototype=null===t?Object.create(t):(n.prototype=t.prototype,new n)});Object.defineProperty(n,"__esModule",{value:!0});var o,s=e("events"),a=(o=s.EventEmitter,i(c,o),c.prototype.addEventListener=function(e,t){return o.prototype.addListener.call(this,e,t)},c.prototype.removeEventListener=function(e,t){return o.prototype.removeListener.call(this,e,t)},c.prototype.dispatchEvent=function(e,t){return o.prototype.emit.call(this,e,t)},c);function c(){return null!==o&&o.apply(this,arguments)||this}n.EventDispatcher=a},{events:4}],2:[function(e,t,n){"use strict";var r,i=this&&this.__extends||(r=function(e,t){return(r=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n])})(e,t)},function(e,t){function n(){this.constructor=e}r(e,t),e.prototype=null===t?Object.create(t):(n.prototype=t.prototype,new n)}),a=this&&this.__assign||function(){return(a=Object.assign||function(e){for(var t,n=1,r=arguments.length;n<r;n++)for(var i in t=arguments[n])Object.prototype.hasOwnProperty.call(t,i)&&(e[i]=t[i]);return e}).apply(this,arguments)};Object.defineProperty(n,"__esModule",{value:!0});var o,s=e("./dispatcher"),c="8ec90001-f315-4f60-9fb8-838830daea50",u="8ec90002-f315-4f60-9fb8-838830daea50",f=!0,h={BUTTON_COMMAND:[1],CREATE_COMMAND:[1,1],CREATE_DATA:[1,2],RECEIPT_NOTIFICATIONS:[2],CACULATE_CHECKSUM:[3],EXECUTE:[4],SELECT_COMMAND:[6,1],SELECT_DATA:[6,2],RESPONSE:[96,32]},l={0:"Invalid opcode",1:"Operation successful",2:"Opcode not supported",3:"Missing or invalid parameter value",4:"Not enough memory for the data object",5:"Data object does not match the firmware and hardware requirements, the signature is wrong, or parsing the command failed",7:"Not a valid object type for a Create request",8:"The state of the DFU process does not allow this operation",10:"Operation failed",11:"Extended error"},p={0:"No extended error code has been set. This error indicates an implementation problem",1:"Invalid error code. This error code should never be used outside of development",2:"The format of the command was incorrect",3:"The command was successfully parsed, but it is not supported or unknown",4:"The init command is invalid. The init packet either has an invalid update type or it is missing required fields for the update type",5:"The firmware version is too low. For an application, the version must be greater than the current application. For a bootloader, it must be greater than or equal to the current version",6:"The hardware version of the device does not match the required hardware version for the update",7:"The array of supported SoftDevices for the update does not contain the FWID of the current SoftDevice",8:"The init packet does not contain a signature",9:"The hash type that is specified by the init packet is not supported by the DFU bootloader",10:"The hash of the firmware image cannot be calculated",11:"The type of the signature is unknown or not supported by the DFU bootloader",12:"The hash of the received firmware image does not match the hash in the init packet",13:"The available space on the device is insufficient to hold the firmware"},d=(o=s.EventDispatcher,i(v,o),v.prototype.log=function(e){this.dispatchEvent(v.EVENT_LOG,{message:e})},v.prototype.progress=function(e){this.dispatchEvent(v.EVENT_PROGRESS,{object:"unknown",totalBytes:0,currentBytes:e})},v.prototype.connect=function(e){var t=this;return e.addEventListener("gattserverdisconnected",function(){t.notifyFns={},t.controlChar=null,t.packetChar=null}),this.gattConnect(e).then(function(e){if(t.log("found "+e.length+" characteristic(s)"),t.packetChar=e.find(function(e){return e.uuid===u}),!t.packetChar)throw new Error("Unable to find packet characteristic");if(t.log("found packet characteristic"),t.controlChar=e.find(function(e){return e.uuid===c}),!t.controlChar)throw new Error("Unable to find control characteristic");if(t.log("found control characteristic"),!t.controlChar.properties.notify&&!t.controlChar.properties.indicate)throw new Error("Control characteristic does not allow notifications");return t.controlChar.startNotifications()}).then(function(){return t.controlChar.addEventListener("characteristicvaluechanged",t.handleNotification.bind(t)),t.log("enabled control notifications"),e})},v.prototype.gattConnect=function(e,t){var n=this;return void 0===t&&(t=v.SERVICE_UUID),Promise.resolve().then(function(){return e.gatt.connected?e.gatt:e.gatt.connect()}).then(function(e){return n.log("connected to gatt server"),e.getPrimaryService(t).catch(function(){throw new Error("Unable to find DFU service")})}).then(function(e){return n.log("found DFU service"),e.getCharacteristics()})},v.prototype.handleNotification=function(e){var t=e.target.value;if(h.RESPONSE.indexOf(t.getUint8(0))<0)throw new Error("Unrecognised control characteristic response notification");var n=t.getUint8(1);if(this.notifyFns[n]){var r=t.getUint8(2),i=null;if(1===r){var o=new DataView(t.buffer,3);this.notifyFns[n].resolve(o)}else if(11===r){var s=t.getUint8(3);i="Error: "+p[s]}else i="Error: "+l[r];i&&(this.log("notify: "+i),this.notifyFns[n].reject(i)),delete this.notifyFns[n]}},v.prototype.sendOperation=function(o,s,a){var c=this;return new Promise(function(e,t){var n=s.length;a&&(n+=a.byteLength);var r=new Uint8Array(n);if(r.set(s),a){var i=new Uint8Array(a);r.set(i,s.length)}c.notifyFns[s[0]]={resolve:e,reject:t},o.writeValue(r).catch(function(e){return c.log(e),Promise.resolve().then(function(){return c.delayPromise(500)}).then(function(){return o.writeValue(r)})})})},v.prototype.sendControl=function(e,r){var i=this;return new Promise(function(t,n){i.sendOperation(i.controlChar,e,r).then(function(e){setTimeout(function(){return t(e)},i.delay)}).catch(function(e){n(e)})})},v.prototype.transferInit=function(e){return this.transfer(e,"init",h.SELECT_COMMAND,h.CREATE_COMMAND)},v.prototype.transferFirmware=function(e){return this.transfer(e,"firmware",h.SELECT_DATA,h.CREATE_DATA)},v.prototype.transfer=function(i,o,e,s){var a=this;return this.sendControl(e).then(function(e){var t=e.getUint32(0,f),n=e.getUint32(4,f),r=e.getInt32(8,f);if("init"!==o||n!==i.byteLength||!a.checkCrc(i,r))return a.progress=function(e){a.dispatchEvent(v.EVENT_PROGRESS,{object:o,totalBytes:i.byteLength,currentBytes:e})},a.progress(0),a.transferObject(i,s,t,n);a.log("init packet already available, skipping transfer")})},v.prototype.transferObject=function(i,e,t,o){var s=this,n=o-o%t,r=Math.min(n+t,i.byteLength),a=new DataView(new ArrayBuffer(4));return a.setUint32(0,r-n,f),this.sendControl(e,a.buffer).then(function(){var e=i.slice(n,r);return s.transferData(e,n)}).then(function(){return s.sendControl(h.CACULATE_CHECKSUM)}).then(function(e){var t=e.getInt32(4,f),n=e.getUint32(0,f),r=i.slice(0,n);if(s.checkCrc(r,t))return s.log("written "+n+" bytes"),o=n,s.sendControl(h.EXECUTE);s.log("object failed to validate")}).then(function(){if(r<i.byteLength)return s.transferObject(i,e,t,o);s.log("transfer complete")})},v.prototype.transferData=function(e,t,n){var r=this;n=n||0;var i=Math.min(n+20,e.byteLength),o=e.slice(n,i);return this.packetChar.writeValue(o).then(function(){return r.delayPromise(r.delay)}).then(function(){if(r.progress(t+i),i<e.byteLength)return r.transferData(e,t,i)})},v.prototype.checkCrc=function(e,t){return this.crc32?t===this.crc32(new Uint8Array(e)):(this.log("crc32 not found, skipping CRC check"),!0)},v.prototype.delayPromise=function(t){return new Promise(function(e){setTimeout(e,t)})},v.prototype.requestDevice=function(t,e,n){var r=this;void 0===n&&(n=this.DEFAULT_UUIDS),n=a(a({},this.DEFAULT_UUIDS),n),t||e||(e=[{services:[n.service]}]);var i={optionalServices:[n.service]};return e?i.filters=e:i.acceptAllDevices=!0,this.bluetooth.requestDevice(i).then(function(e){return t?r.setDfuMode(e,n):e})},v.prototype.setDfuMode=function(i,o){var s=this;return void 0===o&&(o=this.DEFAULT_UUIDS),o=a(a({},this.DEFAULT_UUIDS),o),this.gattConnect(i,o.service).then(function(e){s.log("found "+e.length+" characteristic(s)");var t=e.find(function(e){return e.uuid===o.control}),n=e.find(function(e){return e.uuid===o.packet});if(t&&n)return i;var r=e.find(function(e){return e.uuid===o.button});if(!r)throw new Error("Unsupported device");if(s.log("found buttonless characteristic"),!r.properties.notify&&!r.properties.indicate)throw new Error("Buttonless characteristic does not allow notifications");return new Promise(function(e,t){function n(){this.notifyFns={},e(null)}r.startNotifications().then(function(){return s.log("enabled buttonless notifications"),i.addEventListener("gattserverdisconnected",n.bind(s)),r.addEventListener("characteristicvaluechanged",s.handleNotification.bind(s)),s.sendOperation(r,h.BUTTON_COMMAND)}).then(function(){s.log("sent DFU mode"),n.call(s)})})})},v.prototype.update=function(n,r,i){var o=this;return new Promise(function(e,t){return n?r?i?void o.connect(n).then(function(){return o.log("transferring init"),o.transferInit(r)}).then(function(){return o.log("transferring firmware"),o.transferFirmware(i)}).then(function(){o.log("complete, disconnecting..."),n.addEventListener("gattserverdisconnected",function(){o.log("disconnected"),e(n)})}).catch(function(e){if(0===o.delay)return o.log("DFU update failed, but delay=0. Trying again with delay=10..."),o.delay=10,o.update(n,r,i);t(e)}):t("Firmware not specified"):t("Init not specified"):t("Device not specified")})},v.SERVICE_UUID=65113,v.EVENT_LOG="log",v.EVENT_PROGRESS="progress",v);function v(e,t,n){void 0===n&&(n=0);var r=o.call(this)||this;return r.crc32=e,r.bluetooth=t,r.delay=n,r.DEFAULT_UUIDS={service:v.SERVICE_UUID,button:"8ec90003-f315-4f60-9fb8-838830daea50",control:c,packet:u},r.notifyFns={},r.controlChar=null,r.packetChar=null,!r.bluetooth&&window&&window.navigator&&window.navigator.bluetooth&&(r.bluetooth=navigator.bluetooth),r}n.SecureDfu=d},{"./dispatcher":1}],3:[function(e,t,n){"use strict";var r=e("./secure-dfu");t.exports=r.SecureDfu},{"./secure-dfu":2}],4:[function(e,t,n){var c=Object.create||function(e){function t(){}return t.prototype=e,new t},s=Object.keys||function(e){var t=[];for(var n in e)Object.prototype.hasOwnProperty.call(e,n)&&t.push(n);return n},o=Function.prototype.bind||function(e){var t=this;return function(){return t.apply(e,arguments)}};function r(){this._events&&Object.prototype.hasOwnProperty.call(this,"_events")||(this._events=c(null),this._eventsCount=0),this._maxListeners=this._maxListeners||void 0}((t.exports=r).EventEmitter=r).prototype._events=void 0,r.prototype._maxListeners=void 0;var i,a=10;try{var u={};Object.defineProperty&&Object.defineProperty(u,"x",{value:0}),i=0===u.x}catch(e){i=!1}function f(e){return void 0===e._maxListeners?r.defaultMaxListeners:e._maxListeners}function h(e,t,n,r){var i,o,s;if("function"!=typeof n)throw new TypeError('"listener" argument must be a function');if((o=e._events)?(o.newListener&&(e.emit("newListener",t,n.listener?n.listener:n),o=e._events),s=o[t]):(o=e._events=c(null),e._eventsCount=0),s){if("function"==typeof s?s=o[t]=r?[n,s]:[s,n]:r?s.unshift(n):s.push(n),!s.warned&&(i=f(e))&&0<i&&s.length>i){s.warned=!0;var a=new Error("Possible EventEmitter memory leak detected. "+s.length+' "'+String(t)+'" listeners added. Use emitter.setMaxListeners() to increase limit.');a.name="MaxListenersExceededWarning",a.emitter=e,a.type=t,a.count=s.length,"object"==typeof console&&console.warn&&console.warn("%s: %s",a.name,a.message)}}else s=o[t]=n,++e._eventsCount;return e}function l(){if(!this.fired)switch(this.target.removeListener(this.type,this.wrapFn),this.fired=!0,arguments.length){case 0:return this.listener.call(this.target);case 1:return this.listener.call(this.target,arguments[0]);case 2:return this.listener.call(this.target,arguments[0],arguments[1]);case 3:return this.listener.call(this.target,arguments[0],arguments[1],arguments[2]);default:for(var e=new Array(arguments.length),t=0;t<e.length;++t)e[t]=arguments[t];this.listener.apply(this.target,e)}}function p(e,t,n){var r={fired:!1,wrapFn:void 0,target:e,type:t,listener:n},i=o.call(l,r);return i.listener=n,r.wrapFn=i}function d(e,t,n){var r=e._events;if(!r)return[];var i=r[t];return i?"function"==typeof i?n?[i.listener||i]:[i]:n?function(e){for(var t=new Array(e.length),n=0;n<t.length;++n)t[n]=e[n].listener||e[n];return t}(i):y(i,i.length):[]}function v(e){var t=this._events;if(t){var n=t[e];if("function"==typeof n)return 1;if(n)return n.length}return 0}function y(e,t){for(var n=new Array(t),r=0;r<t;++r)n[r]=e[r];return n}i?Object.defineProperty(r,"defaultMaxListeners",{enumerable:!0,get:function(){return a},set:function(e){if("number"!=typeof e||e<0||e!=e)throw new TypeError('"defaultMaxListeners" must be a positive number');a=e}}):r.defaultMaxListeners=a,r.prototype.setMaxListeners=function(e){if("number"!=typeof e||e<0||isNaN(e))throw new TypeError('"n" argument must be a positive number');return this._maxListeners=e,this},r.prototype.getMaxListeners=function(){return f(this)},r.prototype.emit=function(e){var t,n,r,i,o,s,a="error"===e;if(s=this._events)a=a&&null==s.error;else if(!a)return!1;if(a){if(1<arguments.length&&(t=arguments[1]),t instanceof Error)throw t;var c=new Error('Unhandled "error" event. 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//# sourceMappingURL=secure-dfu.js.map
/* --------------------------------------------------------------
         js/core/editorBlockly.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Handle The Blockly view!
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var Blockly;
  var whenInitialised = {}; // If this is called before Blockly was initialised...

  window.blocklyLoaded = function(blockly, blocklyWindow) { // see blockly/blockly.html
    Blockly = blockly;
    if (blocklyWindow) {
      blocklyWindow.Blockly.prompt = function(title,value,callback) {
        var popup = Espruino.Core.App.openPopup({
          title: "Graphical Editor:",
          padding: true,
          contents: '<p>'+Espruino.Core.Utils.escapeHTML(title)+'</p>'+
                     '<input id="promptinput" value="'+Espruino.Core.Utils.escapeHTML(value)+'" style="width:100%"/>' ,
          position: "center",
          buttons : [
            { name:"Next", callback : function() {
              var value = $('#promptinput').val();
              popup.close();
              callback(value);
            }}]
        });
        $('#promptinput').focus();
      };
    }
    setTimeout(function() {
      if (whenInitialised.show) {
        $("#divblockly").hide(); // not sure why this is required, but it is!
        $("#divblockly").show();
        Blockly.setVisible();
      }
      if (whenInitialised.setXML)
        setXML(whenInitialised.setXML);
      whenInitialised = {};
    }, 10);
  };

  window.blocklyChanged = function(contents) { // see blockly/blockly.html
    Espruino.callProcessor("xmlCodeChanged", { code : contents } );
  };

  function init() {
    // Config
    Espruino.Core.Config.add("BLOCKLY_TO_JS", {
      section : "General",
      name : "Create JavaScript from Graphical Editor",
      description : "When you click 'Send to Espruino', should the code from the Graphical Editor create a tab containing JavaScript?",
      type : "boolean",
      defaultValue : false,
    });

    Espruino.Core.Config.add("BLOCKLY_LANGUAGE", {
      section : "General",
      name : "Graphical Editor Language",
      description : "The language to use for blocks in the graphical editor. Modifying this will restart Blockly and lose any changes.",
      type : { "en": "English", "ru":"Russian", "de": "German" },
      defaultValue : "en",
      onChange : updateBlocklyURL
    });
    Espruino.Core.Config.add("BLOCKLY_EXTENSIONS", {
      section : "General",
      name : "Graphical Editor Extensions",
      description : "Which extra types of blocks to display in the graphical editor. Modifying this will restart Blockly and lose any changes." ,
      type : { "multi_select":true,
       "bluetooth":"Bluetooth LE (Puck.js)",
       "robot":"Espruino Pico Robot",
       "nordic_thingy":"Nordic Thingy:52",
       "smartibot":"Smartibot"
      },
      defaultValue : "|bluetooth|robot|",
      onChange : updateBlocklyURL
    });
    // Add the HTML we need
    Espruino.addProcessor("initialised", function(data,callback) {
      updateBlocklyURL();
      callback();
    });

    // Handle the 'sending' processor so we can update the JS if we need to...
    Espruino.addProcessor("sending", function(data, callback) {
      if(Espruino.Config.BLOCKLY_TO_JS && Espruino.Core.File.isInBlockly()) {
        var activeFile = Espruino.Core.File.getActiveFile();
        Espruino.Core.File.setJSCode( "// Code from Graphical Editor\n"+Espruino.Core.EditorBlockly.getCode() , {fileName:"blockly.js"});
        Espruino.Core.File.showFile(activeFile); // ensure even if we created tab, we go back to blockly
      }
      callback(data);
    });
    // when we get JSON for the board, pass it to blockly
    Espruino.addProcessor("boardJSONLoaded", function (data, callback) {
      if (Blockly!==undefined && Blockly.setBoardJSON!==undefined)
        Blockly.setBoardJSON(data);
      callback(data);
    });
    // When we connect, see what board we're connected to
    Espruino.addProcessor("environmentVar", function(env, callback) {
      callback(env);
      if (env && env.BOARD=="SMARTIBOT" && Espruino.Config.BLOCKLY_EXTENSIONS.indexOf("|smartibot|")==-1) {
        Espruino.Core.Terminal.addNotification('Looks like you\'re using <a href="https://www.espruino.com/Smartibot" target="_blank">Smartibot</a>!<br>'+
                                               '<button>Click here</button> to enable Smartibot Blockly blocks.',
                                               { buttonclick : function() {
                                                   Espruino.Core.EditorBlockly.addBlocksFor('smartibot');
                                                 }
                                               });
      }
    });
  }

  function updateBlocklyURL() {
    var blocklyUrl = "blockly/blockly.html?lang="+Espruino.Config.BLOCKLY_LANGUAGE;
    blocklyUrl += "&Enable="+encodeURIComponent(Espruino.Config.BLOCKLY_EXTENSIONS);
    if ($("#divblockly").length) {
      /* We have to hide Blockly while it refreshes for some reason or
      it comes up completely broken */
      var inBlockly = Espruino.Core.Code.isInBlockly();
      if (inBlockly) setVisible(false);
      $("#divblockly")[0].contentWindow.location = blocklyUrl;
      if (inBlockly) setTimeout(function() {
        setVisible(true);
      }, 500);
    } else {
      // Otherwise we just have the iframe
      $('<iframe id="divblockly" class="blocky" style="border:none;" src="'+blocklyUrl+'"></iframe>').appendTo(".editor--code .editor__canvas");
      // doing display:none; here breaks new Blockly as of our update in Nov 2023, and it appears not to be needed now
    }
  }

  function getCode() {
    return Blockly.JavaScript.workspaceToCode(Blockly.mainWorkspace);
  }

  function getXML() {
    return Blockly.Xml.domToText(Blockly.utils.xml.workspaceToDom(Blockly.mainWorkspace));
  }

  function setXML(xml) {
    if (Blockly) {
      var dom = undefined;
      try {
        dom = Blockly.utils.xml.textToDom(xml);
      } catch (e) {
        console.error(e);
        Espruino.Core.Notifications.error("Error while loading Blockly XML");
        return false;
      }
      Blockly.mainWorkspace.clear();
      Blockly.Xml.domToWorkspace(dom, Blockly.mainWorkspace);
    } else
      whenInitialised.setXML = xml;
    return true;
  }

  // Hack around issues Blockly have if we initialise when the window isn't visible
  function setVisible(isVisible) {
    if (isVisible) {
      $("#divblockly").show();
      if (Blockly)
        Blockly.setVisible();
      else
        whenInitialised.show = true; // when Blockly is set, we make sure we make it visible!
    } else {
      $("#divblockly").hide();
    }
  }

  // Add blocks for something specific to BLOCKLY_EXTENSIONS
  function addBlocksFor(id) {
    if (Espruino.Config.BLOCKLY_EXTENSIONS.indexOf("|"+id+"|")==-1) {
      var e = Espruino.Config.BLOCKLY_EXTENSIONS;
      if (!e.length) e="|"+id+"|";
      else e += id+"|";
      Espruino.Config.set("BLOCKLY_EXTENSIONS", e);
    }
  }

  Espruino.Core.EditorBlockly = {
    init : init,
    getCode : getCode,
    getXML : getXML,
    setXML : setXML,
    setVisible : setVisible,
    addBlocksFor : addBlocksFor,
    DEFAULT_CODE : `<xml id="blocklyInitial" style="display: none">
    <block type="espruino_watch" inline="true"  ><title name="EDGE">rising</title><value name="PIN"><block type="espruino_pin"><title name="PIN">BTN1</title></block></value><statement name="DO"><block type="espruino_digitalWrite" inline="true"><value name="PIN"><block type="espruino_pin"><title name="PIN">LED1</title></block></value><value name="VAL"><block type="logic_boolean"><title name="BOOL">TRUE</title></block></value><next><block type="espruino_timeout" inline="true"><value name="SECONDS"><block type="math_number"><title name="NUM">1</title></block></value><statement name="DO"><block type="espruino_digitalWrite" inline="true"><value name="PIN"><block type="espruino_pin"><title name="PIN">LED1</title></block></value><value name="VAL"><block type="logic_boolean"><title name="BOOL">FALSE</title></block></value></block></statement></block></next></block></statement></block>
  </xml>`
  };
}());
/* --------------------------------------------------------------
         js/core/editorJavaScript.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  CodeMirror JavaScript editor
 ------------------------------------------------------------------
**/
"use strict";
(function(){
  var editors = [];
  var id = 0; // auto-incrementing ID used for codeMirror elements
  var defaultLintFlags = { // https://jshint.com/docs/options/
    esversion   : 6,    // Enable ES6 for literals, arrow fns, binary
    evil        : true, // don't warn on use of strings in setInterval
    laxbreak    : true,  // don't warn about newlines in expressions
    laxcomma    : true  // don't warn about commas at the start of the line
  };

  function init() {
    // Options
    Espruino.Core.Config.add("KEYMAP", {
      section : "General",
      name : "JavaScript Editor Keymap",
      description : "Changes the keymap for the JavaScript editor.",
      type : { "emacs": "Emacs", "vim": "Vim", "sublime": "Sublime" },
      defaultValue : "sublime",
      onChange : function(newValue) {
        for (const ed of Espruino.Core.EditorJavaScript.getEditors()) {
          ed.codeMirror.setOption('keyMap', Espruino.Config.KEYMAP);
        }
      }
    });
    Espruino.Core.Config.add("THEME", {
      section : "General",
      name : "JavaScript Editor Theme",
      description : "Changes the colour scheme for the JavaScript editor.",
      type : { "default": "default", "3024-day": "3024-day", "3024-night": "3024-night", "abcdef": "abcdef", "ambiance": "ambiance", "ayu-dark": "ayu-dark", "ayu-mirage": "ayu-mirage", "base16-dark": "base16-dark", "base16-light": "base16-light", "bespin": "bespin", "blackboard": "blackboard", "cobalt": "cobalt", "colorforth": "colorforth", "darcula": "darcula", "dracula": "dracula", "duotone-dark": "duotone-dark", "duotone-light": "duotone-light", "eclipse": "eclipse", "elegant": "elegant", "espruino": "espruino", "erlang-dark": "erlang-dark", "gruvbox-dark": "gruvbox-dark", "hopscotch": "hopscotch", "icecoder": "icecoder", "idea": "idea", "isotope": "isotope", "lesser-dark": "lesser-dark", "liquibyte": "liquibyte", "lucario": "lucario", "material": "material", "material-darker": "material-darker", "material-palenight": "material-palenight", "material-ocean": "material-ocean", "mbo": "mbo", "mdn-like": "mdn-like", "midnight": "midnight", "monokai": "monokai", "moxer": "moxer", "neat": "neat", "neo": "neo", "night": "night", "nord": "nord", "oceanic-next": "oceanic-next", "panda-syntax": "panda-syntax", "paraiso-dark": "paraiso-dark", "paraiso-light": "paraiso-light", "pastel-on-dark": "pastel-on-dark", "railscasts": "railscasts", "rubyblue": "rubyblue", "seti": "seti", "shadowfox": "shadowfox", "solarized dark": "solarized dark", "solarized light": "solarized light", "the-matrix": "the-matrix", "tomorrow-night-bright": "tomorrow-night-bright", "tomorrow-night-eighties": "tomorrow-night-eighties", "ttcn": "ttcn", "twilight": "twilight", "vibrant-ink": "vibrant-ink", "xq-dark": "xq-dark", "xq-light": "xq-light", "yeti": "yeti", "yonce": "yonce", "zenburn": "zenburn" },
      defaultValue : "default",
      onChange : function(newValue) {
        loadThemeCSS(Espruino.Config.THEME);
        for (const ed of Espruino.Core.EditorJavaScript.getEditors()) {
          ed.codeMirror.setOption('theme', Espruino.Config.THEME);
        }
      }
    });
    Espruino.Core.Config.add("INDENTATION_TYPE", {
      section : "General",
      name : "Indentation Type",
      description : "Whether to indent using spaces or tab characters",
      type : { "spaces": "Spaces", "tabs": "Tabs" },
      defaultValue : "spaces",
      onChange : function(newValue) {
        for (const ed of Espruino.Core.EditorJavaScript.getEditors()) {
          ed.codeMirror.setOption('indentWithTabs', !!(Espruino.Config.INDENTATION_TYPE == "tabs"));
        }
      }
    });
    Espruino.Core.Config.add("TAB_SIZE", {
      section : "General",
      name : "Indentation Size",
      description : "The number of space characters an indentation should take up",
      type : {1:1,2:2,4:4,8:8},
      defaultValue : 2,
      onChange : function(newValue) {
        for (const ed of Espruino.Core.EditorJavaScript.getEditors()) {
          ed.codeMirror.setOption('tabSize', Number(Espruino.Config.TAB_SIZE));
          ed.codeMirror.setOption('indentUnit', Number(Espruino.Config.TAB_SIZE));
        }
      }
    });
    Espruino.Core.Config.add("DISABLE_CODE_HINTS", {
      section : "General",
      name : "Disable Code Hints",
      description : "Disable code hints in the editor. BE CAREFUL - they're there "+
      "for a reason. If your code is creating warnings then it may well not work "+
      "on Espruino! (needs a restart to take effect)",
      type : "boolean",
      defaultValue : false,
      onChange: function(newValue) {
        for (const ed of Espruino.Core.EditorJavaScript.getEditors()) {
          ed.codeMirror.setOption('lint', (Espruino.Config.DISABLE_CODE_HINTS) ? false : defaultLintFlags);
        }
      }
    });
    CodeMirror.defineExtension('beautify', function () {
      if (js_beautify) {
        var cm = this;
        cm.setValue(js_beautify(cm.getValue(), {
          indent_size: Number(Espruino.Config.TAB_SIZE),
        }));
      }
    });
    loadThemeCSS(Espruino.Config.THEME);
  }

  /* Returns:
  {
    id : string // id of the code element
    textarea : DOM element of textarea
    div : DOM element of outer div
    codeMirror : codemirror instance
    visible : bool
    remove : function to remove
    setVisible : function(bool)
    setCode
  }
  */
  function createNewEditor() {
    var editor = {
      id : "code" + (id++),
      visible : true
    };

    $(`<div id="div${editor.id}" style="width:100%;height:100%;"><textarea id="${editor.id}"></textarea></div>`).appendTo(".editor--code .editor__canvas");
    // The code editor
    editor.textarea = document.getElementById(editor.id);
    editor.div = document.getElementById("div"+editor.id);
    editor.codeMirror = CodeMirror.fromTextArea(editor.textarea, {
      width: "100%",
      height: "100%",
      lineNumbers: true,
      matchBrackets: true,
      mode: {name: "javascript", globalVars: false},
      lineWrapping: true,
      showTrailingSpace: true,
      lint: ((Espruino.Config.DISABLE_CODE_HINTS) ? false : defaultLintFlags),
      highlightSelectionMatches: {showToken: /\w/},
      foldGutter: {rangeFinder: new CodeMirror.fold.combine(CodeMirror.fold.brace, CodeMirror.fold.comment, CodeMirror.fold.indent)},
      gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter", "CodeMirror-lint-markers"],
      keyMap: Espruino.Config.KEYMAP,
      theme: Espruino.Config.THEME,
      indentWithTabs: !!(Espruino.Config.INDENTATION_TYPE == "tabs"),
      tabSize: Number(Espruino.Config.TAB_SIZE),
      indentUnit: Number(Espruino.Config.TAB_SIZE),
      extraKeys: {
        "Tab" : function(cm) {
          if (cm.somethingSelected()) {
            // `cm.indentSelection("add");` has been replaced due to issues when
            // indenting using 4 spaces rather than 2. Instead, this for loop
            // will iterate each line and indent that line. For lines where
            // there's spaces that don't match an indentation level, the line
            // will be snapped to the next tab stop.
            // Also works with indentations that use the tab character!
            for (var line = cm.getCursor(true).line; line <= cm.getCursor(false).line; line++) {
              var spacesAlreadyIndented = cm.getLine(line).search(/\S|\t|$/) % cm.getOption("indentUnit");

              cm.indentLine(line, cm.getOption("indentUnit") - spacesAlreadyIndented);
            }
          } else { // make sure the tab key indents with spaces
            cm.replaceSelection(cm.getOption("indentWithTabs")? "\t":
              " ".repeat(cm.getOption("indentUnit")), "end", "+input");
          }
        },
        "Ctrl-B": function(cm) {
          cm.beautify();
        }
      }
    });
    // When things have changed...
    editor.codeMirror.on("change", function(cm, changeObj) {
      // If pasting, make sure text gets pasted in the right format
      if (changeObj.origin == "paste") {
        var c = cm.getCursor();
        var code = cm.getValue();
        var newcode = Espruino.Core.Utils.fixBrokenCode(code);
        if (newcode!=code) {
          // Only set if code has changed, as it moves the scrollbar location :(
          cm.setValue(newcode);
          cm.setCursor(c);
        }
      }
      // Send an event for code changed
      Espruino.callProcessor("jsCodeChanged", { code : cm.getValue(), editor : editor } );
    });
    // Handle hovering
    CodeMirror.on(editor.codeMirror.getWrapperElement(), "mouseover", function(e) {
      var node = e.target || e.srcElement;
      if (node) {
        var stillInNode = true;
        CodeMirror.on(node, "mouseout", function mo() {
          CodeMirror.off(node, "mouseout", mo);
          stillInNode = false;
        });
        Espruino.callProcessor("editorHover", {
          node : node,
          showTooltip : function(htmlNode) {
            if (stillInNode) showTooltipFor(e, htmlNode, node);
          }
        });
      }
    });
    CodeMirror.on(editor.codeMirror.getWrapperElement(), "mouseout", function(e) {
      var tooltips = document.getElementsByClassName('CodeMirror-Tern-tooltip');
        while(tooltips.length)
          tooltips[0].parentNode.removeChild(tooltips[0]);
    });
    if (Espruino.Plugins.Tern)
      Espruino.Plugins.Tern.applyToEditor(editor);

    // Add extra functions to return object
    editor.remove = function() {
      editor.HAS_BEEN_REMOVED = true;
      editor.codeMirror.toTextArea();
      editor.div.remove();
      var idx = editors.indexOf(editor);
      editors.splice(idx, idx !== -1 ? 1 : 0);
    };
    editor.setVisible = function(isVisible) {
      editor.visible = isVisible;
      if (isVisible) {
        editors.forEach(e => {
          if (e!=editor) {
            $(e.div).hide();
            e.visible = false;
          }
        });
        $(editor.div).show();
        setTimeout(function () {
          editor.codeMirror.refresh();
        }, 1);
      } else
        $(editor.div).hide();
    };
    editor.setCode = function(code) {
      editor.codeMirror.setValue(code);
    };
    editor.getCode = function() {
      var code = editor.codeMirror.getValue();
      // replace the Non-breaking space character with space. This seems to be an odd Android thing
      return code.replace(/\xA0/g," ");
    };
    editor.getSelectedCode = function() {
      var code = editor.codeMirror.getSelection();
      // replace the Non-breaking space character with space. This seems to be an odd Android thing
      return code.replace(/\xA0/g," ");
    };
    editors.push(editor);
    return editor;
  }

  function getVisibleEditor() {
    return editors.find(cm => cm.visible);
  }

  function loadThemeCSS(selectedTheme) {
    var codeMirrorMainCSS = document.querySelector('link[href$="codemirror.css"]');
    if (codeMirrorMainCSS===null) // for when serving up file-compacted IDE
      codeMirrorMainCSS = document.querySelector('link[href="index.css"]');
    var codeMirrorThemeCSS = document.querySelector('link[href^="js/libs/codemirror/theme/"]');

    // default theme css lives in main css and doesn't need an extra sheet loaded
    if (selectedTheme === 'default') {
      if (codeMirrorThemeCSS) {
        codeMirrorThemeCSS.remove(); // remove previous theme css sheet
      }
    }else{
      selectedTheme = selectedTheme.replace(/solarized\s(dark|light)/, 'solarized'); // edge case for solarized theme: 1 sheet for both themes

      var newThemeCSS = 'js/libs/codemirror/theme/' + selectedTheme + '.css';

      if (!codeMirrorThemeCSS) {
        codeMirrorThemeCSS = document.createElement('link');
        codeMirrorThemeCSS.href = newThemeCSS;
        codeMirrorThemeCSS.setAttribute('rel', 'stylesheet');

        if (codeMirrorMainCSS) {
          codeMirrorMainCSS.parentNode.insertBefore(codeMirrorThemeCSS, codeMirrorMainCSS.nextSibling);
        }

      } else if (newThemeCSS !== codeMirrorThemeCSS.href) {
        codeMirrorThemeCSS.href = newThemeCSS;
      }
    }
  }

  // --------------------------------------------------------------------------
  // Stolen from codemirror's lint.js (not exported :( )
  // --------------------------------------------------------------------------

  function showTooltip(e, content) {
    var tt = document.createElement("div");
    tt.className = "CodeMirror-lint-tooltip";
    tt.appendChild(content.cloneNode(true));
    document.body.appendChild(tt);

    function position(e) {
      if (!tt.parentNode) return CodeMirror.off(document, "mousemove", position);
      tt.style.top = Math.max(0, e.clientY - tt.offsetHeight - 5) + "px";
      tt.style.left = (e.clientX + 5) + "px";
    }
    CodeMirror.on(document, "mousemove", position);
    position(e);
    if (tt.style.opacity != null) tt.style.opacity = 1;
    return tt;
  }
  function rm(elt) {
    if (elt.parentNode) elt.parentNode.removeChild(elt);
  }
  function hideTooltip(tt) {
    if (!tt.parentNode) return;
    if (tt.style.opacity == null) rm(tt);
    tt.style.opacity = 0;
    setTimeout(function() { rm(tt); }, 600);
  }

  function showTooltipFor(e, content, node) {
    // remove any existing codemirror tooltips
    var tooltips = document.getElementsByClassName('CodeMirror-Tern-tooltip');
    while(tooltips.length)
      tooltips[0].parentNode.removeChild(tooltips[0]);

    var tooltip = showTooltip(e, content);
    function hide() {
      CodeMirror.off(node, "mouseout", hide);
      if (tooltip) { hideTooltip(tooltip); tooltip = null; }
    }
    var poll = setInterval(function() {
      if (tooltip) for (var n = node;; n = n.parentNode) {
        if (n == document.body) return;
        if (!n) { hide(); break; }
      }
      if (!tooltip) return clearInterval(poll);
    }, 400);
    CodeMirror.on(node, "mouseout", hide);
  }

  //--------------------------------------------------------------------------
  //--------------------------------------------------------------------------
  //--------------------------------------------------------------------------

  Espruino.Core.EditorJavaScript = {
    init : init,
    createNewEditor : createNewEditor, // see createNewEditor - returns an object. used by file.js
    getCode : () => { // get the code in the currently visible editor
      var ed = getVisibleEditor();
      return ed ? ed.getCode() : "";
    },
    getSelectedCode : () => { // get the currently highlighted bit of code
      var ed = getVisibleEditor();
      return ed ? ed.getSelectedCode() : "";
    },
    getCodeMirror : () => {
      console.warn("Using Espruino.Core.EditorJavaScript.getCodeMirror - deprecated");
      var ed = getVisibleEditor();
      if (!ed) return undefined;
      return ed.codeMirror
    },
    hideAll : () => {
      editors.forEach(editor => { if (editor.visible) editor.setVisible(false); });
    },
    getEditors : () => editors, // return list of current editors created with createNewEditor
    DEFAULT_CODE : "var  on = false;\nsetInterval(function() {\n  on = !on;\n  LED1.write(on);\n}, 500);"
  };
}());
/* --------------------------------------------------------------
         js/core/send.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  "Send to Espruino" implementation
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var sendIcon;
  var NAMES = [
    "RAM",
    "Flash",
    "&#9888;Flash",
    "", // Storage
    ""  // SD Card
  ];

  function updateIconInfo() {
    var n = Espruino.Config.SAVE_ON_SEND | Espruino.Core.Send.SEND_MODE_RAM;
    var txt = NAMES[n];
    if (n==Espruino.Core.Send.SEND_MODE_STORAGE)
      txt = /*"&#x1f5ce;"+*/Espruino.Config.SAVE_STORAGE_FILE;
    if (n==Espruino.Core.Send.SEND_MODE_SDCARD)
      txt = "&#x1f5ce;"+Espruino.Config.SAVE_STORAGE_FILE;
    sendIcon.setInfo(txt);
  }

  function init() {
    // Add stuff we need
    sendIcon = Espruino.Core.App.addIcon({
      id: "deploy",
      icon: "deploy",
      title : "Send to Espruino",
      order: 400,
      area: {
        name: "code",
        position: "top"
      },
      click: function() {
        Espruino.Core.MenuPortSelector.ensureConnected(function() {
          if (Espruino.Core.Terminal.isVisible())
            Espruino.Core.Terminal.focus(); // give the terminal focus
          Espruino.callProcessor("sending");
          Espruino.Core.File.getEspruinoCode(Espruino.Core.CodeWriter.writeToEspruino);
        });
      },
      more: function() {
        chooseSendMethod();
      },
      info : "---"
    });
    updateIconInfo();

    Espruino.addProcessor("connected", function(data, callback) {
      $(".send").button( "option", "disabled", false);
      callback(data);
    });
    Espruino.addProcessor("disconnected", function(data, callback) {
      $(".send").button( "option", "disabled", true);
      callback(data);
    });
  }

  function sendMethodChanged(sendMode, sendFile) {
    Espruino.Config.set("SAVE_ON_SEND",sendMode | Espruino.Core.Send.SEND_MODE_RAM);
    Espruino.Config.set("SAVE_STORAGE_FILE",sendFile);
    Espruino.callProcessor("sendModeChanged", null, function() {
      updateIconInfo();
    });
  }

  function chooseSendMethod() {
    // see saveOnSend.js
    var items = [{
      title: "RAM",
      description : "Lost after power down unless `save()` used",
      callback : function() {
        popup.close();
        sendMethodChanged(Espruino.Core.Send.SEND_MODE_RAM, "");
      }
    },{
      title: "Flash",
      description : "Executed even after power-down",
      callback : function() {
        popup.close();
        sendMethodChanged(Espruino.Core.Send.SEND_MODE_FLASH, "");
      }
    }];
    if (Espruino.Plugins.Storage) {
      items.push({
        title: "Storage",
        description : "Choose a file in Storage to save to",
        callback : function() {
          popup.close();
          Espruino.Core.MenuPortSelector.ensureConnected(function() {
            Espruino.Plugins.Storage.showFileChooser({title:"Choose Storage file...", allowNew:true}, function(filename) {
              sendMethodChanged(Espruino.Core.Send.SEND_MODE_STORAGE, filename);
            });
          });
        }
      });
      if (Espruino.Config.SHOW_SDCARD_ICON)
        items.push({
          title: "SD Card",
          description : "Choose a file on an SD card to save to (if available)",
          callback : function() {
            popup.close();
            Espruino.Core.MenuPortSelector.ensureConnected(function() {
              Espruino.Plugins.Storage.showFileChooser({title:"Choose SD card file...", allowNew:true, fs:1}, function(filename) {
                sendMethodChanged(Espruino.Core.Send.SEND_MODE_SDCARD, filename);
              });
            });
          }
        });
    }
    var popup = Espruino.Core.App.openPopup({
      id: "sendmethod",
      title: "Upload Destination",
      padding: true,
      contents: Espruino.Core.HTML.domList(items),
      position: "auto",
    });
  }

  Espruino.Core.Send = {
    init : init,
    updateIconInfo : updateIconInfo, // update the status
    SEND_MODE_RAM : 0,
    SEND_MODE_FLASH : 1,
    SEND_MODE_STORAGE : 3,
    SEND_MODE_SDCARD : 4
  };
}());
/* --------------------------------------------------------------
         js/core/menuPortSelector.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  List of Serial Ports, and handles connection and disconnection
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var connectButton;
  var lastContents = undefined;
  var popup;

  function init()
  {
    connectButton = Espruino.Core.App.addIcon({
      id: "connection",
      icon: "connect",
      title : "Connect / Disconnect",
      order: -1000,
      area: document.getElementsByClassName("toolbar").length ? {
        name: "toolbar",
        position: "left"
      } : {
        name: "terminal",
        position: "top"
      },
      click: toggleConnection
    });

    Espruino.addProcessor("connected", function(data, callback) {
      connectButton.setIcon("disconnect");
      callback(data);
    });

    Espruino.addProcessor("disconnected", function(data, callback) {
      connectButton.setIcon("connect");
      callback(data);
    });
  }

  function toggleConnection() {
    if (Espruino.Core.Serial.isConnected()) {
      disconnect();
    } else {
      showPortSelector();
    }
  }

  function showPortSelector(callback) {
    var checkInt;

    function selectPortInternal(port) {
      if (checkInt) clearInterval(checkInt);
      checkInt = undefined;
      popup.setContents('<h2 class="list__no-results">Connecting...</h2>');
      function connect() {
        connectToPort(port, function(success){
          if (popup) popup.close();
          if(success){
            if (callback!==undefined) callback();
          }
        });
      }
      connect();
    }

    var searchHtml = `<h2 class="list__no-results">Searching...</h2>
    <div class="list__no-results-help"><a href="#" onclick="Espruino.Core.MenuPortSelector.showPortStatus()">Show status</a>`;

    function getPorts() {
      Espruino.Core.Serial.getPorts(function(items) {
        if (items.toString() == lastContents)
          return; // same... don't update
        lastContents = items.toString();


        if(items && items.length > 0) {
          // if autoconnect is set on this, just automatically connect, without displaying the window
          var autoconnect = items.find(port=>port.autoconnect);
          if (autoconnect)
            return selectPortInternal(autoconnect.path);
          //  work out list of items
          var listItems = items.map(function(port) {
            var icon = "icon-usb";
            if (port.type=="bluetooth") icon = "icon-bluetooth";
            if (port.type=="socket") icon = "icon-network";
            if (port.type=="audio") icon = "icon-headphone";

            return {
              icon : icon,
              title : port.path,
              description : port.description,
              callback : function() {
                selectPortInternal(port.path);
              }
            }
          });
          var domList = Espruino.Core.HTML.domList(listItems);
          var footerHtml = "";
          if (Espruino.Core.RemoteConnection) // serial_webrtc.js
            footerHtml = '<span><a href="#" onclick="Espruino.Core.MenuPortSelector.showRemoteConnectionPopup()">🌐 Remote Connection</a></span>';
          footerHtml += '<span style="float: right;"><a href="#" onclick="Espruino.Core.MenuPortSelector.showPortStatus()">status</a></span>'
          domList.append(Espruino.Core.HTML.domElement('<li>'+footerHtml+'</li>'));
          popup.setContents(domList);
        } else {
          var html = '<h2 class="list__no-results">Searching... No ports found</h2>';
          html += `<div class="list__no-results-help"><a href="#" onclick="Espruino.Core.MenuPortSelector.showPortStatus()">Show status</a><br/>
                   Have you tried <a href="http://www.espruino.com/Troubleshooting" target="_blank">Troubleshooting</a>?</div>`;
          popup.setContents(html);
        }
      });
    }

    // force update
    lastContents = undefined;
    // Launch the popup
    popup = Espruino.Core.App.openPopup({
      id: "portselector",
      title: "Select a port...",
      contents: searchHtml,
      position: "center",
      onClose: function() {
        // Make sure any calls to close popup, also clear
        // the port check interval
        if (checkInt) clearInterval(checkInt);
        checkInt = undefined;
        popup = undefined;
      }
    });

    // Setup checker interval
    checkInt = setInterval(getPorts, 2000);
    getPorts();
  }

  function connectToPort(serialPort, callback) {
    if (!serialPort) {
      Espruino.Core.Notifications.error("Invalid Serial Port ");
      return;
    }
    function nameFromConInfo(cInfo) {
      var name = serialPort;
      if (cInfo.portName && name!=cInfo.portName) name+=", "+cInfo.portName;
      return name;
    }

    Espruino.Core.Status.setStatus("Connecting...");
    Espruino.Core.Serial.open(serialPort, function(cInfo) {
      if (cInfo!==undefined && cInfo.error===undefined) {
        console.log("Device found "+JSON.stringify(cInfo));
        var name = nameFromConInfo(cInfo);
        if (Espruino.Core.Env) {
          var boardData = Espruino.Core.Env.getBoardData();
          if (!boardData.BOARD || !boardData.VERSION)
            name += " (No response from board)";
        }
        Espruino.Core.Notifications.success("Connected to "+name, true);
        callback(true);
      } else {
        // fail
        var msg = ".";
        if (cInfo!==undefined && cInfo.error!==undefined)
          msg = ": "+cInfo.error;
        Espruino.Core.Notifications.error("Connection Failed"+msg, true);
        callback(false);
      }
    }, function (cInfo) {
      console.log("Disconnect callback... "+JSON.stringify(cInfo));
      Espruino.Core.Notifications.warning("Disconnected from "+nameFromConInfo(cInfo), true);
    });

  };

  /** If we're connected, call callback, otherwise put up a connection dialog.
   * If connection succeeds, call callback - otherwise don't */
  function ensureConnected(callback) {
    if (Espruino.Core.Serial.isConnected()) {
      callback(); // great - we're done!
    } else {
      showPortSelector(callback);
    }
  }

  function disconnect() {
    if (Espruino.Core.Serial.isConnected())
      Espruino.Core.Serial.close();
  }

  function showPortStatus() {
    var html = `<table style="padding-top: 8px;padding-bottom: 8px;">`;
    Espruino.Core.Serial.devices.forEach(device => {
      var deviceText = "";
      var deviceIcon = "&nbsp;";
      var color = "black";
      if (device.getStatus) {
        var s = device.getStatus();
        if (s===true) { deviceIcon=`&#10003;`; deviceText = "Ok"; color="green"; }
        else if (s.warning) { deviceIcon=`&#9888;`; deviceText = s.warning; color="orange"; }
        else if (s.error) { deviceIcon=`&#10006;`; deviceText = s.error; color="red"; }
        else deviceText = "Unknown Status";
      } else {
        deviceText = "Unknown Status";
      }
      html += `<tr><td><span style="color:${color};font-size:200%;">${deviceIcon}</span></td><td style="font-weight:bold">${device.name}</td><td>${deviceText}</td></tr>\n`;
    });
    html += `</table>`;

    Espruino.Core.App.openPopup({
      id: "portstatus",
      title: "Port Status",
      contents: html,
      position: "auto", padding: true
    });
  }

  function showRemoteConnectionPopup() {
    if (popup) popup.close();
    Espruino.Core.RemoteConnection.showPairingPopup();
  }

  Espruino.Core.MenuPortSelector = {
      init : init,

      ensureConnected : ensureConnected,
      connectToPort : connectToPort,
      disconnect : disconnect,
      showPortSelector: showPortSelector,
      showPortStatus : showPortStatus,
      showRemoteConnectionPopup : showRemoteConnectionPopup
  };

}());
/* --------------------------------------------------------------
         js/core/menuSettings.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Settings Menu
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var currentSection;

  function init() {
    Espruino.Core.App.addIcon({
      id: "settings",
      icon: "settings",
      title : "Settings",
      order: -100,
      area: {
        name: "toolbar",
        position: "right"
      },
      click: function() {
        createSettingsWindow();
      }
    });
  }

  function createSettingsWindow(initialSection) {
    if (initialSection==undefined)
      initialSection = "About";
    // Get sections
    var sections = Espruino.Core.Config.getSections();
    // Write list of sections
    var html =
      '<div class="settings">'+
        '<div class="sections">';
    for (var i in sections) {
      var sectionHasEntries = sections[i].getHTML!==undefined;
      var sectionName = sections[i].name;
      var configItems = Espruino.Core.Config.data;
      for (var configName in configItems) {
        var configItem = configItems[configName];
        if (configItem.section == sectionName) {
          sectionHasEntries = true;
          break;
        }
      }
      if (sectionHasEntries || sections[i].alwaysShow)
        html += '<a name="'+sectionName+'" title="'+ sections[i].description +'"><div class="icon-forward sml"></div><span>'+sectionName+'</span></a>';
    }
    html +=
        '</div>'+
        '<div class="currentsection">'+
        '</div>'+
      '</div>';
    // Create the window
    Espruino.Core.App.openPopup({
      title: "Settings",
      contents: html,
      position: "stretch",
    });
    // Handle section changes
    $(".settings .sections a").click(function() {
      showSettingsSection($(this).attr("name"));
    });
    // Show initial section
    showSettingsSection(initialSection);
  }

  function showSettingsSection(sectionName) {
    currentSection = sectionName;
    $(".settings .sections a").removeClass("current");
    getSettingsSection(sectionName, function(data) {
      $(".settings .currentsection").html(data);
      $(".settings .sections a[name='"+sectionName+"']").addClass("current");
      $(".tour_link").click(function(e) {
        e.preventDefault();
        Espruino.Core.App.closePopup();
        Espruino.Plugins.Tour.runTour("/data/tours/"+$(this).attr("tour_name"));
      });
    });
  }

  function getSettingsSection(sectionName, callback) {
    var section = Espruino.Core.Config.getSection(sectionName);
    if (section===undefined) {
      console.warn("No section named "+sectionName+" found");
      callback("");
      return;
    }

    var html = "<h1>"+sectionName+"</h1>";
    if (section.descriptionHTML!==undefined)
      html += "<p>"+section.descriptionHTML+"<p>";
    if (section.description!==undefined)
      html += "<p>"+Espruino.Core.Utils.escapeHTML(section.description, false).replace("\n","</p><p>") +"<p>";
    if (section.tours!==undefined) {
      html += "<p>See the ";
      var tours = [];
      for (var tourName in section.tours)
        tours.push('<a href="#" class="tour_link" tour_name="'+section.tours[tourName]+'">'+tourName+'</a>');

      if (tours.length==1)
        html += tours[0];
      else
        html += tours.slice(0,-1).join(", ") + " and "+tours[tours.length-1];
      html += " for more information.</p>";
    }

    var configItems = Espruino.Core.Config.data;
    for (var configName in configItems) {
      var configItem = configItems[configName];
      if (configItem.section == sectionName) {
        html += getHtmlForConfigItem(configName, configItem);
      }
    }

    if (section.getHTML!==undefined) {
      section.getHTML(function (data) {
        callback(html + data);
      });
    } else {
      callback(html);
    }

   $(".settings .currentsection input,select").change(function() {
     // First, check for multi_select
     var configGroup = $(this).attr("configGroup");
     if (configGroup && configItems[configGroup] !== undefined) {
       var checked = [];
       $(this).parent().children().each(function() {
         if ($(this).is(':checked')) checked.push($(this).val());
       });
      Espruino.Config.set(configGroup, "|"+checked.join("|")+"|");
      return;
     }
     // Then simple one-off checkboxes
     var configName = $(this).attr("name");
     if (configName && configItems[configName] !== undefined) {
       if (configItems[configName].type == "boolean")
         Espruino.Config.set(configName, $(this).is(':checked'));
       else
         Espruino.Config.set(configName, $(this).val());
       console.log("Config."+configName+" => "+Espruino.Config[configName]);
     } else
       console.warn("Config named '"+configName+"' not found");
   });
   $(".settings .currentsection button").click(function() {
     var key = $(this).attr("name");
     if (Espruino.Core.Config.data[key] !== undefined &&
         Espruino.Core.Config.data[key].onClick !== undefined)
       Espruino.Core.Config.data[key].onClick();
   });
  }

  function getHtmlForConfigItem(configName, config) {
    var value = Espruino.Config[configName];
    var html =
      '<h3 style="clear:both">'+Espruino.Core.Utils.escapeHTML(config.name)+'</h3>';
    var desc = "";
    if (config.descriptionHTML!==undefined)
      desc += "<p>"+config.descriptionHTML+"<p>";
    if (config.getDescriptionHTML!==undefined)
      html += "<p>"+config.getDescriptionHTML()+"<p>";
    if (config.description!==undefined)
      desc += '<p>'+Espruino.Core.Utils.escapeHTML(config.description, false).replace("\n","</p><p>")+'</p>';
    // type : "int"/"boolean"/"string"/{ value1:niceName, value2:niceName },
    if (config.type == "none" || config.type===undefined) {
      html += desc;
    } else if (config.type == "boolean") {
      html += '<input name="'+configName+'" type="checkbox" style="float: right;" '+(value?"checked":"")+'/>';
      html += desc;
    } else if (config.type == "string") {
      html += desc;
      html += '<input name="'+configName+'" type="text" size="80" value="'+Espruino.Core.Utils.escapeHTML(value)+'"/>';
    } else if ((typeof config.type) == "object") {
      if (config.type.multi_select==true) {
        html += '<div name="'+configName+'" style="float: right;">';
        for (var key in config.type) {
          if (key=="multi_select") continue;
          var checked = value.indexOf("|"+key+"|")>=0;
          var id = configName+"_"+key;
          html += '<input type="checkbox" id="'+id+'" configGroup="'+configName+'" name="'+id+'" value="'+key+'" '+(checked?"checked":"")+'>'+
                  '<label for="'+id+'">'+Espruino.Core.Utils.escapeHTML(config.type[key])+'</label><br/>';
        }
        html += '</div>';
      } else {
        html += '<select name="'+configName+'" style="float: right;">';
        for (var key in config.type)
          html += '<option value="'+Espruino.Core.Utils.escapeHTML(key, false)+'" '+(key==value?"selected":"")+'>'+
                    Espruino.Core.Utils.escapeHTML(config.type[key])+
                  '</option>';
        html += '</select>';
      }
      html += desc;
    } else if (config.type == "button") {
      var label = config.label || "Go";
      html += '<button name="'+configName+'" style="float: right;" '+(value?"checked":"")+'>'+label+'</button>';
      html += desc;
    } else {
      console.warn("Unknown config type '"+config.type+"' for Config."+configName);
    }
    return html;
  }

  function refresh() {
    showSettingsSection(currentSection);
  }

  Espruino.Core.MenuSettings = {
    init : init,
    show : createSettingsWindow,
    refresh : refresh,
  };
}());
/* --------------------------------------------------------------
         js/core/menuFlasher.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Step by step flasher
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var isFlashing = false; // are we currently trying to update flash?

  var BLE_DEVICES = ["PUCKJS","PIXLJS","JOLTJS","MDBT42Q","SMARTIBOT","BANGLEJS","BANGLEJS2"];

  function init() {
  }

  function showFlasher(urlOrNothing, binaryOrNothing) {
    if (urlOrNothing) urlOrNothing = urlOrNothing.trim();
    if (urlOrNothing=="") urlOrNothing=undefined;

    if (!urlOrNothing && !binaryOrNothing) {
      var env = Espruino.Core.Env.getData();
      if (env!==undefined &&
          env.info!==undefined &&
          env.info.binary_url!==undefined) {
        var flashFn = getBoardFlashingFunction(env.BOARD);
        if (!flashFn) return;
        var flashInfo = {
              binary_url : urlOrNothing,
              board_id : env.BOARD,
              board_info : env.info,
              board_chip : env.chip,
              flashFn : flashFn,
            };
        stepSelectBinary(flashInfo);
        return;
      }
    }

    stepSelectBoard(urlOrNothing, binaryOrNothing);
  }

  function getBoardFlashingFunction(boardId) {
    var msg;
    if (BLE_DEVICES.indexOf(boardId)>=0) {
      if (navigator && navigator.bluetooth &&
          !(window && window.location && window.location.protocol=="http:")) {

        return stepFlashNordicDFU;
      } else {
        msg = '<p>The firmware for this device can only be written via Web Bluetooth (or a phone app). Please see you device\'s reference page for more information on firmware updates.</p>';
      }
    } else if (["PICO_R1_3","ESPRUINOBOARD","ESPRUINOWIFI"].indexOf(boardId)>=0) {
      return stepFlashSTM32;
    } else {
      msg = '<p>The firmware for this device can\'t be updated from the IDE at the moment.</p>';
    }
    var popup = Espruino.Core.App.openPopup({
      title: "Firmware Update",
      padding: true,
      contents: msg,
      position: "center",
      buttons : [{ name:"Ok", callback : function() {
        popup.close();
      }}]
    });
    return undefined;
  }

  function stepSelectBoard( urlOrNothing, binaryOrNothing) {
    var boardList;

    var popup = Espruino.Core.App.openPopup({
      title: "Firmware Update",
      padding: true,
      contents: '<p>We need to find out which board you have. Please select from the list below and click next...</p>'+
                '<div class="board_list">Loading...</div>'+
                '<p>If you don\'t see your board here, you can\'t update the firmware on it from the IDE. Please click outside this window to close it, and <a href="http://www.espruino.com/Download" target="_blank">see the download page</a> for more instructions.</p>' ,
      position: "center",
      buttons : [{ name:"Next", callback : function() {
        var boardId = $('.board_list option:selected').attr("name");
        popup.close();
        if (boardId===undefined || boardList[boardId]===undefined)
          console.error("No board ID found! Looks like no option selected");
        else {
          var flashFn = getBoardFlashingFunction(boardId);
          if (flashFn) {
            var boardJson = boardList[boardId]["json"];
            var flashInfo = {
              binary_url : urlOrNothing,
              binary : binaryOrNothing,
              board_id : boardId,
              board_info : boardJson.info,
              board_chip : boardJson.chip,
              flashFn : flashFn };
            if (urlOrNothing || binaryOrNothing)
              stepDownload( flashInfo );
            else
              stepSelectBinary( flashInfo );
          }
      }}}]
    });

    Espruino.Core.Env.getBoardList(function(data) {
      var html = "<red>Error loading boards...</red>";
      if (data) {
        boardList = data;
        html = "<select>";
        for (var boardId in data) {
          var boardJson = data[boardId]["json"];
          if (boardJson.info.bootloader) {
            //html += '<img src="data:image/png;base64,'+data[boardId]["thumb_b64"]+'" alt="'+boardId+'"/>';
            try {
              html += '  <option name="'+boardId+'">'+boardJson.info.name+'</option>';
            } catch (e) {
              console.warn(e);
            }
          }
        }
        html += "</select>";
      }

      $(".board_list").html(html);
    });

  }

  // flashInfo = { binary_url, board_id, board_info, board_chip, flashFn }
  function stepSelectBinary(flashInfo) {
    var binaries = flashInfo.board_info.binaries;
    var base_url = flashInfo.board_info.binary_url;
    // Old-style, and just one firmware image - go to next!
    if (binaries===undefined) {
      flashInfo.binary_url = base_url;
      stepDownload( flashInfo );
      return;
    }
    // New style
    base_url = base_url.substr(0,base_url.lastIndexOf("/")+1);
    // Just one...
    if (binaries.length==1) {
      flashInfo.binary_url = base_url+binaries[0]["filename"].replace("%v", flashInfo.board_info["binary_version"]);
      stepDownload( flashInfo );
      return;
    }
    // More than one...
    // Make a list
    var html = "<select class=\"fw_list\">";
    for (var i in binaries) {
      try {
        html += '  <option name="'+i+'" filename="'+binaries[i]["filename"]+'">'+binaries[i]["description"]+'</option>';
      } catch (e) {
        console.warn(e);
      }
    }
    html += "</select>";
    // Create popup
    var popup = Espruino.Core.App.openPopup({
      title: "Firmware Update",
      padding: true,
      contents: '<p>Your board has multiple options for firmware. Please select from the list below and click next...</p>'+
                '<p><b>Note:</b> If you don\'t need any of the features listed, you can choose any firmware.</p>'+
                html,
      position: "auto",
      buttons : [{ name:"Next", callback : function() {
        var binary_filename = $('.fw_list option:selected').attr("filename");
        popup.close();
        if (binary_filename===undefined)
          console.error("No binary filename found! Looks like no option selected");
        else {
          flashInfo.binary_url = base_url+binary_filename.replace("%v", flashInfo.board_info.binary_version);
          console.log("Choosing "+flashInfo.binary_url);
          stepDownload( flashInfo );
        }
      }}]
    });

  }

  // data = { binary_url, board_id, board_info, board_chip, flashFn }
  function stepDownload(data) {
    if (window && window.location && data.binary_url &&
        window.location.protocol=="https:" &&
        data.binary_url.substr(0,5)=="http:")
      data.binary_url = "https:"+data.binary_url.substr(5);
    data.flashFn(data);
  }

  function setStatus(x) {
    Espruino.Core.Notifications.success(x, true);
    if (!Espruino.Core.Status.hasProgress())
      Espruino.Core.Status.setStatus(x);
  }

  // ===========================================================================
  // data = { binary_url, board_id, board_info, board_chip, flashFn }
  function stepFlashSTM32(data) {
    if (data.binary)
      return doFlash();
    Espruino.Core.Utils.getBinaryURL(data.binary_url, function (err, binary) {
      if (err) return stepError("Unable to download "+data.binary_url);
      data.binary = binary;
      doFlash();
    });

    function doFlash() {
      Espruino.Core.MenuPortSelector.disconnect();
      var popup = Espruino.Core.App.openPopup({
        title: "Firmware Update",
        padding: true,
        contents: "<p>Firmware downloaded successfully.</p>"+getDocs(data, "reset"),
        position: "center",
        buttons : [{ name:"Next", callback : function() {
          popup.close();
          stepFlashSTM32_2(data);
        }}]
      });
    }
  }

  // data = { binary, binary_url, board_id, board_info, board_chip, flashFn }
  function stepFlashSTM32_2(data) {
    isFlashing = true;
    Espruino.Core.MenuPortSelector.ensureConnected(function() {
      console.log("stepFlashSTM32: ",data);
      var flashOffset = data.board_chip.place_text_section;
      Espruino.Core.Status.showStatusWindow("Firmware Update","Your firmware is now being updated");

      Espruino.Core.Flasher.flashBinaryToDevice(data.binary, flashOffset, function (err) {
        isFlashing = false;
        Espruino.Core.Terminal.grabSerialPort();
        Espruino.Core.MenuPortSelector.disconnect();
        Espruino.Core.Status.hideStatusWindow();
        if (err) {
          Espruino.Core.Notifications.error("Error Flashing: "+ err, true);
          console.log(err);
          stepError(err);
        } else {
          setStatus("Flashing Complete");
          Espruino.callProcessor("flashComplete");
          stepSuccess(data);
        }
      }, function(status) {
        setStatus(status);
      });
    });
  }
  // ===========================================================================
  function SecureDfuPackage(buffer) {
      this.buffer = buffer;
      this.zipFile = null;
      this.manifest = null;
  };

  SecureDfuPackage.prototype.load = function() {
    var that = this;
    return JSZip.loadAsync(this.buffer)
    .then(function(zipFile) {
        that.zipFile = zipFile;
        try {
            return that.zipFile.file("manifest.json").async("string");
        } catch(e) {
            throw new Error("Unable to find manifest, is this a proper DFU package?");
        }
    })
    .then(function(content) {
        that.manifest = JSON.parse(content).manifest;
        return that;
    });
  };

  SecureDfuPackage.prototype.getImage = function(types) {
    var that = this;
    for (var type of types) {
      if (this.manifest[type]) {
        var entry = this.manifest[type];
        var result = {
            type: type,
            initFile: entry.dat_file,
            imageFile: entry.bin_file
        };

        return this.zipFile.file(result.initFile).async("arraybuffer")
        .then(function(data) {
            result.initData = data;
            return that.zipFile.file(result.imageFile).async("arraybuffer")
        }).then(function(data) {
            result.imageData = data;
            return result;
        });
      }
    }
  };

  SecureDfuPackage.prototype.getBaseImage = function() {
      return this.getImage(["softdevice", "bootloader", "softdevice_bootloader"]);
  };

  SecureDfuPackage.prototype.getAppImage = function() {
      return this.getImage(["application"]);
  };


  // data = { binary_url, board_id, board_info, board_chip, flashFn }
  function stepFlashNordicDFU(data) {
    if (data.binary)
      return doFlash();
    /* Hack because we have different binaries - hex and zip - depending
    on how firmware is written. We need zips for Nordic DFU */
    data.binary_url = data.binary_url.replace(/\.hex$/,".zip");
    Espruino.Core.Utils.getBinaryURL(data.binary_url, function (err, binary) {
      if (err) return stepError("Unable to download "+data.binary_url);
      data.binary = binary;
      doFlash();
    });

    function doFlash() {
      data.firmwarePackage = new SecureDfuPackage(data.binary);
      data.firmwarePackage.load().then(function() {
        Espruino.Core.MenuPortSelector.disconnect();
        var popup = Espruino.Core.App.openPopup({
          title: "Firmware Update",
          padding: true,
          contents: "<p>Firmware downloaded successfully.</p>"+getDocs(data, "reset"),
          position: "center",
          buttons : [{ name:"Next", callback : function() {
              popup.close();
              stepFlashNordicDFU_2(data);
          }}]
        });
      }).catch(function(error) {
        stepError(error);
      });
    }
  }

  // data = { binary, binary_url, board_id, board_info, board_chip, flashFn }
  function stepFlashNordicDFU_2(data) {
    console.log("stepFlashNordicDFU: ",data);

    // Actually start DFU
   const dfu = new SecureDfu(/* no CRC32 - no validation */);
   Espruino.Core.Status.showStatusWindow("Firmware Update","Your firmware is now being updated");
   setStatus("Initialising...");

   dfu.addEventListener("log", function(event) {
       console.log(event.message);
   });
   var lastProgress;
   dfu.addEventListener("progress", function(state) {
     var progress = state.currentBytes / state.totalBytes;
     if (lastProgress===undefined) {
       Espruino.Core.Status.setStatus("Uploading...", 1);
     } else {
       Espruino.Core.Status.incrementProgress(progress - lastProgress)
     }
     lastProgress = progress;
   });
   dfu.requestDevice(true).then(function(device) {
       if (!device) {
           setStatus("DFU mode set, select device again");
           return;
       }
       return Promise.resolve().then(function() {
         return data.firmwarePackage.getBaseImage();
       }).then(function(image) {
           if (image) {
               setStatus(`Updating ${image.type}: ${image.imageFile}...`);
               return dfu.update(device, image.initData, image.imageData);
           }
       }).then(function() {
         return data.firmwarePackage.getAppImage();
       }).then(function(image) {
           if (image) {
               setStatus(`Updating ${image.type}: ${image.imageFile}...`);
               return dfu.update(device, image.initData, image.imageData);
           }
       })
   }).then(function() {
     setStatus("Flashing Complete");
     Espruino.Core.Status.hideStatusWindow();
     stepSuccess(data);
   }).catch(function(error) {
     Espruino.Core.Status.hideStatusWindow();
     stepError(error);
   });
  }

  // ===========================================================================
  // ===========================================================================
  function stepShowProgress() {
    var popup = Espruino.Core.App.openPopup({
      title: "Firmware Update",
      padding: true,
      contents: '<div class="status__progress" style="width:100%;margin-top:10px;"><div class="status__progress-bar"></div></div>'+
                '<p><b>Your firmware is now being updated</b>... <span class="flash_status"></span></p>',
      position: "center",
    });
    popup.setStatus = function(x) {
      var s = document.getElementsByClassName("flash_status");
      if (s.length) s[0].innerHTML = Espruino.Core.Utils.escapeHTML(x);
    };
    return popup;
  }

  function stepSuccess(data) {
    var popup = Espruino.Core.App.openPopup({
      title: "Firmware Update",
      padding: true,
      contents: '<p><b>The Firmware was updated successfully!</b><p>'+
                getDocs(data, "success"),
      position: "center",
      buttons : [{ name:"Next", callback : function() {
        popup.close();
      }}]
    });
  }

  function stepError(err) {
    var popup = Espruino.Core.App.openPopup({
      title: "Firmware Update",
      padding: true,
      contents: '<p><b>Sorry, the firmware update has failed.</b></p>'+
                '<p>The error was: <i>'+err+'</i></p>'+
                '<p>Please try again, or check out the <a href="http://www.espruino.com/Troubleshooting" target="_blank">Troubleshooting page</a> for what to do next.</p>',
      position: "center",
      buttons : [{ name:"Next", callback : function() {
        popup.close();
      }}]
    });
  }

  function getDocs(data, doc) {
    var html = undefined;
    if (doc=="reset") {
      if (data.board_id.substr(0,4)=="PICO" ||
          data.board_id=="ESPRUINOWIFI") {
        html =
          '<p><b>Please put your board into bootloader mode.</b> Hold down the button, plug into USB, and then immediately release it.</p>'+
          '<p>When the red and green LEDs start pulsing on and off, click <b>Next</b>...</p>'+
          '<p>If the LEDs are not pulsing, please see the <a href="http://www.espruino.com/Troubleshooting" target="_blank">Troubleshooting page</a></p>';
      } else if (data.board_id=="ESPRUINOBOARD") {
        html =
          '<p><b>Please put your board into bootloader mode.</b> Hold down BTN1, press and release RST, then release BTN1.</p>'+
          '<p>When the blue LED starts pulsing on and off, click <b>Next</b>...</p>'+
          '<p>If the blue LED is not pulsing, please see the <a href="http://www.espruino.com/Troubleshooting" target="_blank">Troubleshooting page</a></p>';
      } else if (data.board_id=="PIXLJS") {
        html =
          '<p><b>Please put your Pixl.js into bootloader mode.</b> Hold down BTN1(top left) and apply power</p>'+
          '<p>While ===== is moving across the screen release the button. Now click <b>Next</b> and connect to the Bluetooth device named <b>DfuTarg</b>...</p>'+
          '<p>If you cannot find a device named DfuTarg, see the <a href="http://www.espruino.com/Troubleshooting+BLE" target="_blank">Troubleshooting page</a></p>';
      } else if (data.board_id=="BANGLEJS") {
        html =
          '<p><b>Please put your Bangle.js into bootloader mode.</b> Hold down BTN1(top) and BTN2(middle) for ~10 sec until the watch reboots to a screen of black and white text.</p>'+
          '<p>While ===== is moving across the screen release both buttons. Now click <b>Next</b> and connect to the Bluetooth device named <b>DfuTarg</b>...</p>'+
          '<p>If you cannot find a device named DfuTarg, see the <a href="http://www.espruino.com/Troubleshooting+Bangle.js" target="_blank">Troubleshooting page</a></p>';
      } else if (data.board_id=="BANGLEJS2") {
        html =
          '<p style="color:red"><b>PLEASE UPDATE WITH <a href="https://banglejs.com/apps/?id=fwupdate" target="_blank">THE APP LOADER</a>.</b> Only use this method if the App Loader\'s Firmware Updater isn\'t working for you.</p>'+
          '<p><b>Please put your Bangle.js into bootloader mode.</b> Hold down the button for ~10 sec until the watch reboots to a screen of black and white text.</p>'+
          '<p>While ===== is moving across the screen release the button. Now click <b>Next</b> and connect to the Bluetooth device named <b>DfuTarg</b>...</p>'+
          '<p>If you cannot find a device named DfuTarg, see the <a href="http://www.espruino.com/Troubleshooting+Bangle.js" target="_blank">Troubleshooting page</a></p>';
      } else if (BLE_DEVICES.indexOf(data.board_id)>=0) {
        html =
          '<p><b>Please put your board into bootloader mode.</b> Hold down BTN1 while powering it on, and then release BTN1 immediately.</p>'+
          '<p>A LED should light to indicate bootloader mode - Now click <b>Next</b> and connect to the Bluetooth device named <b>DfuTarg</b>...</p>'+
          '<p>If you cannot find a device named DfuTarg, see the <a href="https://www.espruino.com/Troubleshooting+BLE" target="_blank">Troubleshooting page</a>.</p>';

      } else {  // General instructions
        html =
          '<p><b>Please put your board into bootloader mode.</b> Hold down BTN1 while powering it on, and then release BTN1 immediately.</p>'+
          '<p>A LED should light to indicate bootloader mode - click <b>Next</b>...</p>'+
          '<p>If a LED is not lighting, please see the <a href="https://www.espruino.com/Troubleshooting" target="_blank">Troubleshooting page</a>.</p>';
      }
    } else if (doc=="success") {
      if (data.board_id.substr(0,4)=="PICO"  ||
          data.board_id=="ESPRUINOWIFI") {
        html =
          '<p>Please unplug the board and plug it back in to exit bootloader mode, then click <b>Next</b> to start using it!</p>';
      } else if (data.board_id=="ESPRUINOBOARD") {
        html =
          '<p>Please press the RST button to reset the Espruino out of bootloader mode, then click <b>Next</b> to start using it!</p>';
      } else { // General instructions
        html =
          '<p>Please power cycle your board to exit bootloader mode, then click <b>Next</b> to start using it!</p>';
      }
    }
    if (!html) {
      html = "Couldn't find documentation"
      console.warn("Unknown doc type '"+doc+"' for board '"+data.board_id+"'");
    }
    return html;
  }

  Espruino.Core.MenuFlasher = {
      init : init,
      showFlasher : showFlasher,
      isFlashing : function() { return isFlashing; } // are we currently trying to update flash?
  };

}());
/* --------------------------------------------------------------
         js/core/settingsAbout.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  'About' Settings Page
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    Espruino.Core.Utils.getVersion(function(version){
      Espruino.Core.Config.addSection("About", {
        description : undefined,
        sortOrder : -1000,
        getHTML : function(callback) {
          $.get("data/settings_about.html", function(data) {
            // set contents
            callback(data);
            // IDE version
            $(".webide_version").html("Web IDE version "+version);
            // Board info
            var html;
            var strData = {};
            if (Object.keys(Espruino.Core.Env.getBoardData()).length > 0) {
              var d = Espruino.Core.Env.getBoardData();
              for (var k in d) {
                var v = d[k];
                if ("string" != typeof v)
                  v = ""+JSON.stringify(v);
                if (v.length>80) v=v.substr(0,77)+" ...";
                strData[k] = v;
              }
              html = Espruino.Core.HTML.htmlTable(strData);
            } else
              html = "<p>No board information available. Please connect to an Espruino board first.</p>";
            $('.board_info').html( html );
            // Patreon
            $.get("PATREON.md", function(data) {
              $(".patreon").html(Espruino.Core.HTML.markdownToHTML(data));
            });
            // Key Shortcuts
            var keyShortcuts = Espruino.Plugins.KeyShortcuts.getShortcutDescriptions();
            html = "<dl>";
            Object.keys(keyShortcuts).forEach(function(key) {
              html += "<dt>"+Espruino.Core.Utils.escapeHTML(key)+"</dt><dd>"+
                            Espruino.Core.Utils.escapeHTML(keyShortcuts[key])+"</dd>\n";
            });
            html += "</dl>";
            $('.shorcut_info').html( html );
          });          
        }
      });
    });
  }

  Espruino.Core.SettingsAbout = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         js/core/settingsFlasher.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Settings Page for the Espruino Flasher
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    Espruino.Core.Config.addSection("Flasher", {
      description : "This allows you to update the Espruino Firmware that is on your board",
      sortOrder : 10000,
      getHTML : function(callback) {
        $.get("data/settings_flasher.html", function(data) {
          callback(data);

          // Set up warning
          var chromeVer = navigator.userAgent.replace(/.*Chrome\/([0-9]*).*/,"$1");
          if (chromeVer < 32) {
            // 32 should work, but if they're going to upgrade let's suggest 33 :)
            var info = "Your Chrome version is "+chromeVer+". Please upgrade it to 33 or newer before trying to flash your Espruino board."
            $(".flash_info").css("color","red").html(info);
          }

          // Start button
          $('.flash_start').click( function() {
            Espruino.Core.App.closePopup();
            Espruino.Core.MenuFlasher.showFlasher();
          });
          // Advanced start
          $('.flash_start_url').click( function() {
            var url = $('.flash_url').val();
            if (url!="") {
              Espruino.Core.App.closePopup();
              Espruino.Core.MenuFlasher.showFlasher( url );
            }
          });
          $('.flash_start_file').click( function() {
            Espruino.Core.Utils.fileOpenDialog({
                id:"flasher",
                type:"arraybuffer",
                mimeType:".bin,.zip,application/zip"},function(buffer) {
              Espruino.Core.App.closePopup();
              Espruino.Core.MenuFlasher.showFlasher( undefined, buffer );
            });
          });
          // Espruino WiFi flash
          $('.esp8266_fw_check').click( checkESP8266Firmware );
          $('.esp8266_fw_start').click( flashESP8266Firmware );
        });
      }
    });
  }

  const ESP8266_CONFIGS = {
    espruinowifi : {serialDevice:"Serial2",serialRx:"A3",serialTx:"A2",chPD:"A13",chBoot:"A14"},
    espruinopicoshim : {serialDevice:"Serial2",serialRx:"A3",serialTx:"A2",chPD:"B9",chBoot:"A1"},
    pixljs : {serialDevice:"Serial1",serialRx:"D0",serialTx:"D1",note:"You will need to manually connect GPIO0/BOOT pin to GND to flash firmware (by setting SW3 to ON)"},
    pixljsmulti : {serialDevice:"Serial1",serialRx:"D0",serialTx:"D1",chPD:"D9",note:"You will need to manually connect GPIO0/BOOT pin to GND to flash firmware" }
  };
  function getESP8266Config() {
    var options = ESP8266_CONFIGS[document.querySelector('input[name=esp8266_type]:checked').value];
    if (!options) throw new Error("Unknown config type!");
    return options;
  }

  function checkESP8266Firmware() {
    var options = getESP8266Config();
    Espruino.Core.MenuPortSelector.ensureConnected(function() {
      Espruino.Core.Status.showStatusWindow("Espruino WiFi","Checking firmware version...");
      Espruino.Core.FlasherESP8266.getFirmwareVersion(options, version => {
        Espruino.Core.Status.hideStatusWindow();
        var popup = Espruino.Core.App.openPopup({
          title: "Espruino WiFi",
          padding: true,
          contents: version ? `<p><b>The WiFi firmware reported:</b></p><p><pre>${Espruino.Core.Utils.escapeHTML(version)}</pre></p>`:
                            `<p><b>The ESP8266 did not respond to the version request</b></p>`,
          position: "center",
          buttons : [{ name:"Ok", callback : function() {
            popup.close();
          }}]
        });
      });
    });
  }

  function flashESP8266Firmware() {
    var options = getESP8266Config();
    var BIN = "ESP8266_AT1.3.0.0-512k";
    var URL = "https://www.espruino.com/binaries/"+BIN+".bin";
    Espruino.Core.App.closePopup();
    var popup = Espruino.Core.App.openPopup({
      title: "Espruino WiFi ESP8266 Firmware Update",
      padding: true,
      contents: `<p>This option will update your Espruino WiFi's ESP8266 WiFi
    module to the latest version (${BIN}). This will take several minutes, and should not be stopped
    halfway. <b>Espruino WiFi should not be in bootloader mode when you connect.</b></p>${options.note?`<p><b>NOTE: ${options.note}</b></p>`:``}`,
      position: "auto",
      buttons : [{ name:"Next", callback : function() {
        popup.close();
        Espruino.Core.Status.showStatusWindow("Firmware Update","ESP8266 firmware is now being updated...");
        Espruino.Core.Status.setStatus("Downloading binary...");
        Espruino.Core.Utils.getBinaryURL(URL, function (err, binary) {
          if (err) {
            Espruino.Core.Status.hideStatusWindow();
            Espruino.Core.Notifications.error("Unable to download binary: "+ err, true);
            return;
          }
          console.log("Downloaded "+binary.byteLength+" bytes");
          Espruino.Core.MenuPortSelector.ensureConnected(function() {
            options.binary = binary;
            options.cbStatus = function(txt,progress) {
              Espruino.Core.Status.setStatus(txt);
            };
            options.cbDone = function(err) {
              Espruino.Core.Status.hideStatusWindow();
              var popup = Espruino.Core.App.openPopup({
                title: "Firmware Update",
                padding: true,
                contents: err ? '<p><b>The Firmware update failed: '+Espruino.Core.Utils.escapeHTML(err)+'</b><p>'
                              : '<p><b>The Firmware was updated successfully!</b><p>',
                position: "center",
                buttons : [{ name:"Next", callback : function() {
                  popup.close();
                }}]
              });
            };
            Espruino.Core.FlasherESP8266.flashDevice(options);
          });
        });
      }},{ name:"Close", callback : function() {
        popup.close();
      }}]
    });

  }

  Espruino.Core.SettingsFlasher = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/plugins/boardJSON.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 ------------------------------------------------------------------
  Handle loading of Board's JSON files (containing things like binary URLs)
 ------------------------------------------------------------------
**/
"use strict";
(function(){
  
  function init() {
    Espruino.Core.Config.add("BOARD_JSON_URL", {
      section : "Board",
      name : "Board JSON URL",
      description : "Where to search online for board JSON files - these contain links to up to date firmware as well as detailed information about the board's hardware",
      type : "string",
      defaultValue : (Espruino.Core.Utils.needsHTTPS()?"https":"http")+"://www.espruino.com/json"
    });
    
    
    Espruino.addProcessor("environmentVar", function(env, callback) {
      if (env!==undefined && env.BOARD!==undefined) {
        var jsonPath = env.JSON_URL || Espruino.Config.BOARD_JSON_URL+"/"+env.BOARD+".json";
        loadJSON(env, jsonPath, callback);
      } else
        callback(env);
    }); 
  }
  
  function loadJSON(env, jsonPath, callback) {    
    console.log("Loading "+jsonPath);
    Espruino.Core.Utils.getJSONURL(jsonPath, function(data){
      console.log("Board JSON loaded");
      for (var key in data)
        env[key] = data[key];
      Espruino.callProcessor("boardJSONLoaded", env, callback);          
    });
  }
  
  Espruino.Plugins.BoardJSON = {
    init : init,
    loadJSON : loadJSON     
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/plugins/versionChecker.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
   Check for the latest version of the board's software
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    // Configuration
    Espruino.Core.Config.add("SERIAL_THROTTLE_SEND", {
      section : "Communications",
      name : "Throttle Send",
      description : "Throttle code when sending to Espruino? If you are experiencing lost characters when sending code from the Code Editor pane, this may help.",
      type : {0:"Auto",1:"Always",2:"Never"},
      defaultValue : 0,
      onChange : function() {
        checkEnv(Espruino.Core.Env.getData());
      }
    });

    // must be AFTER boardJSON
    Espruino.addProcessor("environmentVar", function(env, callback) {
      checkEnv(env);
      callback(env);
    });

    Espruino.addProcessor("flashComplete", function(env, callback) {
      if (Espruino.Core.App) {
        var icon = Espruino.Core.App.findIcon("update");
        if(icon) icon.remove();
      }

      callback(env);
    });

    Espruino.addProcessor("disconnected", function(env, callback) {
      if (Espruino.Core.App) {
        var icon = Espruino.Core.App.findIcon("update");
        if(icon) icon.remove();
      }

      callback(env);
    });
  }

  function checkEnv(env) {
    if (env!==undefined &&
        env.VERSION!==undefined) {
      var tCurrent = env.VERSION;
      var vCurrent = Espruino.Core.Utils.versionToFloat(tCurrent);

      if (vCurrent > 1.43 &&
          (env.CONSOLE=="USB"||env.CONSOLE=="Bluetooth"||env.CONSOLE=="Telnet")) {
        console.log("Firmware >1.43 supports faster writes over USB");
        Espruino.Core.Serial.setSlowWrite(false);
      } else {
        // setSlowWrite(true) called in Serial.open so is the default
        if ( Espruino.Core.Serial.isSlowWrite()) // not disabled already?
          console.log(`Note: Uploads may be slow. Use SERIAL_THROTTLE_SEND/'Throttle Send' option to disable throttling at the expense of unreliable uploads on some boards.`);
      }

      if (env.info!==undefined &&
          env.info.binary_version!==undefined) {
        var tAvailable = env.info.binary_version;
        var vAvailable = Espruino.Core.Utils.versionToFloat(tAvailable);

        console.log("FIRMWARE: Current "+tCurrent+", Available "+tAvailable);

        if (vAvailable > vCurrent &&
          (env.BOARD=="ESPRUINOBOARD" ||
           env.BOARD.substr(0,4)=="PICO" ||
           env.BOARD=="ESPRUINOWIFI" ||
           env.BOARD=="PUCKJS" ||
           env.BOARD=="PIXLJS" ||
           env.BOARD=="JOLTJS" ||
           env.BOARD=="MDBT42Q" ||
           env.BOARD=="BANGLEJS" ||
           env.BOARD=="BANGLEJS2")) {
          console.log("New Firmware "+tAvailable+" available");
          Espruino.Core.Notifications.info("New Firmware available ("+vCurrent+" installed, "+tAvailable+" available)");

          if (Espruino.Core.App) Espruino.Core.App.addAlertIcon({
            id:'update',
            title: 'New Firmware '+ tAvailable +' available. Click to update.',
            click: function(){
              if (env.BOARD=="BANGLEJS2")
                window.open("https://banglejs.com/apps/?id=fwupdate");
              else
                Espruino.Core.MenuSettings.show("Flasher");
            }
          });
        }
      }
    }
  }

  Espruino.Plugins.VersionChecker = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/plugins/compiler.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ----------------------------------------------------------49--------
  An Compiler that converts any bit of JavaScript tagged with
  "compiled" into native code.

  function foo(a,b) {
    "compiled";
    return a+b;
  }
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    Espruino.Core.Config.add("COMPILATION", {
      section : "Communications",
      name : "JavaScript Compiler",
      descriptionHTML : 'Compile JavaScript functions prefixed with &quot;compiled&quot; into Native code. (<a href="http://www.espruino.com/Compilation" target="_blank">More Info</a>)',
      type : "boolean",
      defaultValue : true
    });
    Espruino.Core.Config.add("COMPILATION_URL", {
      section : "Communications",
      name : "JavaScript Compiler URL",
      description : "When JavaScript Compilation is enabled, this is the URL of the JavaScript compiler",
      type : "string",
      defaultValue : "https://www.espruino.com/service/compiler"
    });
    if (Espruino.Config.COMPILATION_URL == "http://www.espruino.com:32766")
      Espruino.Config.COMPILATION_URL = "https://www.espruino.com/service/compiler";

    // When code is sent to Espruino, search it for compiled js/inline c
    Espruino.addProcessor("transformForEspruino", function(code, callback) {
      compileCode(code, "", callback);
    });
    // When a module is sent to Espruino...
    Espruino.addProcessor("transformModuleForEspruino", function(module, callback) {
      compileCode(module.code, " in "+module.name, function(code) {
        module.code = code;
        callback(module);
      });
    });
  }

  /** Given a string containing code, this parses it using acorn
   * then attempts to find functions with the string "compiled"
   * in them and sends them off to the compiler.
   */
  function compileCode(code, description, callback) {
    var tasks = [];

    /* Replace this node with the given text, and
    update node start/end positions of other nodes
    we're interested in */
    function replaceNode(node, newCode) {
      code = code.substr(0,node.start) + newCode + code.substr(node.end);
      var offs = newCode.length - (node.end-node.start); // offset for future code snippets
      for (var i in tasks)
        if (tasks[i].node.start > node.start) {
          tasks[i].node.start += offs;
          tasks[i].node.end += offs;
        }
    }

    if (!Espruino.Config.COMPILATION)
      return callback(code);

    var board = Espruino.Core.Env.getBoardData();
    try {
      var ast = acorn.parse(code, {ecmaVersion: 2020});
      tasks = [];
      // function xyz() { "compiled" ... }
      ast.body.forEach(function(node) {
        if (node.type=="FunctionDeclaration") {
          if (node.body.type=="BlockStatement" &&
              node.body.body.length>0 &&
              node.body.body[0].type=="ExpressionStatement" &&
              node.body.body[0].expression.type=="Literal" &&
              node.body.body[0].expression.value=="compiled") {
            tasks.push({
              type:"js",
              node:node,
              source: code.substring(node.start, node.end),
            });
          }
        }
        // 'var xyz = E.compiledC(`templateliteral`)'
        if (node.type=="VariableDeclaration" && node.declarations.length==1) {
          var d = node.declarations[0];
          if (d.type=="VariableDeclarator" &&
              d.init &&
              d.init.type=="CallExpression" &&
              d.init.callee.type=="MemberExpression" &&
              d.init.callee.object.name=="E" &&
              d.init.callee.property.name=="compiledC" &&
              d.init.arguments &&
              d.init.arguments.length==1) {
            if (d.init.arguments[0].type=="TemplateLiteral") {
              tasks.push({
                type:"c",
                node:d.init,
                source: d.init.arguments[0].quasis[0].value.raw,
              });
            }
            if (d.init.arguments[0].type=="Literal") {
              tasks.push({
                type:"c",
                node:d.init,
                source: d.init.arguments[0].value,
              });
            }
          }
        }
      });
      if (tasks.length) {
        if (!board ||
            typeof board.EXPORTS != "object" &&
            typeof board.EXPTR != "number"  ) {
          Espruino.Core.Notifications.error("Compiler not active as no process.env.EXPORTS/EXPTR available.<br/>Is your board supported and firmware up to date?");
          return callback(code);
        }
      }

      var taskCount = 0;
      tasks.forEach(function (task) {
        taskCount++;
        var compileData = {
          board : board.BOARD,
          version : board.VERSION,
          git : board.GIT_COMMIT,
        };
        if (task.type=="js") {
          compileData.js = task.source;
        } else if (task.type == "c") {
          compileData.c = task.source;
        } else throw new Error("Unknown Node type");
        if (board.EXPORTS)
          compileData.exports = JSON.stringify(board.EXPORTS);
        if (board.EXPTR)
          compileData.exptr = JSON.stringify(board.EXPTR);

        Espruino.Core.Utils.getURL(Espruino.Config.COMPILATION_URL, function(newCode) {
          if (newCode===undefined) {
            Espruino.Core.Notifications.error("Error contacting server. Unable to compile code"+description+" right now.");
            taskCount--;
            if (taskCount==0) callback(code);
            return;
          }
          if (newCode) {
            replaceNode(task.node, newCode);
          }
          taskCount--;
          if (taskCount==0)
            callback(code);
        }, { method:"POST", data:compileData });
      });

    } catch (err) {
      console.log(err);
      Espruino.Core.Notifications.error("Error parsing JavaScript"+description+", but uploading anyway.<br/>"+err.toString());
    }
    if (tasks==0)
      callback(code);
  }

  Espruino.Plugins.Compiler = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/plugins/assembler.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Automatically run an assembler on inline assembler statements
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var base64_encode;
  if (typeof btoa == "undefined")
    base64_encode = function(s) { return Buffer.from(s).toString('base64'); };
  else
    base64_encode = btoa;

/*  Thumb reference :
    http://ece.uwaterloo.ca/~ece222/ARM/ARM7-TDMI-manual-pt3.pdf

    ARM reference
    https://web.eecs.umich.edu/~prabal/teaching/eecs373-f11/readings/ARMv7-M_ARM.pdf
*/

  // list of registers (for push/pop type commands)
  function rlist_lr(value) {
   var regs = value.split(",");
   var vals = { r0:1,r1:2,r2:4,r3:8,r4:16,r5:32,r6:64,r7:128,lr:256 };
   var bits = 0;
   for (var i in regs) {
     var reg = regs[i].trim();
     if (!(reg in vals))  throw "Unknown register name "+reg;
     bits |= vals[reg];
   }
   return bits;
  }

  function reg(reg_offset) {
    return function(reg) {
      var vals = { r0:0,r1:1,r2:2,r3:3,r4:4,r5:5,r6:6,r7:7 };
      if (!(reg in vals)) throw "Unknown register name "+reg;
      return vals[reg]<<reg_offset;
    };
  }
  function reg4(reg_offset) { // 4 bit register
    return function(reg) {
      var vals = { r0:0,r1:1,r2:2,r3:3,r4:4,r5:5,r6:6,r7:7,
                   r8:8,r9:9,r10:10,r11:11,r12:12,r13:13,r14:14,r15:15,
                   lr:14, pc:15 };
      if (!(reg in vals)) throw "Unknown register name "+reg;
      return vals[reg]<<reg_offset;
    };
  }


  function reg_or_immediate(reg_offset, immediate_bit) {
    return function(reg) {
      var regVal = parseInt(reg);
      if (regVal>=0 && regVal<8)
        return ((regVal&7)<<reg_offset) | (1<<immediate_bit);
      var vals = { r0:0,r1:1,r2:2,r3:3,r4:4,r5:5,r6:6,r7:7 };
      if (!(reg in vals)) throw "Unknown register name, or immediate out of range 0..7 "+reg;
      return vals[reg]<<reg_offset;
    };
  }

  function reg_base_offset(base_offset, offset_offset) {
   return function(value) {
     var parms = value.split(",");
     return reg(base_offset)(parms[0]) | reg(offset_offset)(parms[0]);
   };
  }

  function thumb2_immediate_t3(value) {
    if (value[0]!="#")
      throw new "Expecting '#' before number";
    var v = parseInt(value.substr(1));
    if (v>=0 && v<65536) {
      // https://web.eecs.umich.edu/~prabal/teaching/eecs373-f11/readings/ARMv7-M_ARM.pdf page 347
      var imm4,i,imm3,imm8; // what the...?
      imm4 = (v>>12)&15;
      i = (v>>11)&1;
      imm3 = (v>>8)&7;
      imm8 = v&255;
      return (i<<26) | (imm4<<16) | (imm3<<12) | imm8;
    }
    throw "Invalid number '"+value+"' - must be between 0 and 65535";
  }

  function _int(offset, bits, shift, signed) {
    return function(value, labels) {
      var maxValue = ((1<<bits)-1) << shift;
      var minValue = 0;
      if (signed) {
        minValue = -(1<<(bits-1));
        maxValue += minValue;
      }

      var binValue = undefined;
      if (value[0]=="#") {
        binValue = parseInt(value.substr(1));
      } else {
        var addValue = 0;
        var maths = value.indexOf("+");
        if (maths >= 0) {
          addValue = parseInt(value.substr(maths));
          value = value.substr(0,maths);
        }
        if (value in labels)
          binValue = labels[value] + addValue - labels["PC"];
        else
          throw "Unknown label '"+value+"'";
      }


      //console.log("VALUE----------- "+binValue+" PC "+labels["PC"]+" L "+labels[value]);

      if (binValue>=minValue && binValue<=maxValue && (binValue&((1<<shift)-1))==0)
        return ((binValue >> shift) & ((1<<bits)-1)) << offset;

      var msg = "Invalid number '"+value+"' ("+binValue+") - must be between 0 and "+maxValue;
      if (shift!=0) msg += " and a multiple of "+(1<<shift);
      throw msg;
    };
  }

  function uint(offset, bits, shift) {
    return _int(offset, bits, shift, false);
  }

  function sint(offset, bits, shift) {
    return _int(offset, bits, shift, true);
  }

  // special 23-bit address (bottom bit ignored) split into two halves
  function bl_addr() {
    var normal = sint(0, 22, 1); // un-split address
    return function(value, labels) {
      var v = normal(value, labels);
      return ((v>>11)&0x7FF)<<16 | (v&0x7FF);
    };
  }

  var ops = {
    // Format 1: move shifted register
    "lsl"  :[{ base:"00000-----___---", regex : /(r[0-7]),(r[0-7]),(#[0-9]+)$/, args:[reg(0),reg(3),uint(6,5,0)] },
             { base:"0100000010___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // 5.4 d = d << s
    "lsr"  :[{ base:"00001-----___---", regex : /(r[0-7]),(r[0-7]),(#[0-9]+)$/, args:[reg(0),reg(3),uint(6,5,0)] },
             { base:"0100000011___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // 5.4 d = d >> s
    "asr"  :[{ base:"00010-----___---", regex : /(r[0-7]),(r[0-7]),(#[0-9]+)$/, args:[reg(0),reg(3),uint(6,5,0)] },
             { base:"0100000100___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // 5.4 d = d >>> s
    // 5.2 Format 2: add/subtract
    // 00011
    // 5.3 Format 3: move/compare/add/subtract immediate
    "cmp"  :[{ base:"00101---________", regex : /(r[0-7]),(#[0-9]+)$/, args:[reg(8),uint(0,8,0)] }, // move/compare/subtract immediate
             { base:"0100001010___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // 5.4 test d-s
    // 5.4 Format 4: ALU operations
    "and"  :[{ base:"0100000000___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }],
    "eor"  :[{ base:"0100000001___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }],
    // lsl is above
    // lsr is above
    // asr is above
    "adc"  :[{ base:"0100000101___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // d + s + carry
    "sbc"  :[{ base:"0100000110___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // d - s - !carry
    "ror"  :[{ base:"0100000111___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // rotate right
    "tst"  :[{ base:"0100001000___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // test
    "neg"  :[{ base:"0100001001___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // - s
    // cmp is above
    "cmn"  :[{ base:"0100001011___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // test d+s
    "orr"  :[{ base:"0100001100___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // |
    "mul"  :[{ base:"0100001101___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // s*d
    "bic"  :[{ base:"0100001110___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // d & ~s
    "mvn"  :[{ base:"0100001111___---", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }], // ~s
    // 5.5 Format 5: Hi register operations/branch exchange
    // 5.6 Format 6: PC-relative load
    //  done (below)
    // 5.7 Format 7: load/store with register offset
    //  done (below)
    // 5.8 Format 8: load/store sign-extended byte/halfword
    // 5.9 Format 9: load/store with immediate offset
    //  done (below)
    // 5.10 Format 10: load/store halfword
    // 5.11 Format 11: SP-relative load/store
    // 5.12 Format 12: load address
    // done (below)
    // 5.13 Format 13: add offset to Stack Pointer
    // 5.14 Format 14: push/pop registers
    //  done (below)
    // 5.16 Format 16: conditional branch
    "beq" :[{ base:"11010000________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bne" :[{ base:"11010001________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bcs" :[{ base:"11010010________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bcc" :[{ base:"11010011________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bmi" :[{ base:"11010100________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bpl" :[{ base:"11010101________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bvs" :[{ base:"11010110________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bvc" :[{ base:"11010111________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bhi" :[{ base:"11011000________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bls" :[{ base:"11011001________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bge" :[{ base:"11011010________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "blt" :[{ base:"11011011________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "bgt" :[{ base:"11011100________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    "ble" :[{ base:"11011101________", regex : /^(.*)$/, args:[sint(0,8,1)] }], // 5.16 Format 16: conditional branch
    // 5.17 Format 17: software interrupt
    // 5.18 Format 18: unconditional branch
    "b"   :[{ base:"11100___________", regex : /^(.*)$/, args:[sint(0,11,1)] }],
    // 5.19 Format 19: long branch with link
    "bl"  :[{ base:"11110___________11111___________", regex : /^(.*)$/, args:[bl_addr()] }],
    "bx"   :[{ base:"010001110----000", regex : /(lr|r[0-9]+)$/, args:[reg4(3)] }],
    // ....


    "adr"  :[{ base:"10100---________", regex : /^(r[0-7]),([a-zA-Z_][0-9a-zA-Z_]*)$/,args:[reg(8),uint(0,8,2)] },  // ADR pseudo-instruction to save address (actually ADD PC)
             { base:"10100---________", regex : /^(r[0-7]),([a-zA-Z_][0-9a-zA-Z_]*\+[0-9]+)$/,args:[reg(8),uint(0,8,2)] }],
    "push" :[{ base:"1011010-________", regex : /^{(.*)}$/, args:[rlist_lr] }], // 5.14 Format 14: push/pop registers
    "pop"  :[{ base:"1011110-________", regex : /^{(.*)}$/, args:[rlist_lr] }], // 5.14 Format 14: push/pop registers
    "add"  :[{ base:"00110---________", regex : /(r[0-7]),(#[0-9]+)$/, args:[reg(8),uint(0,8,0)] }, // move/compare/subtract immediate
             { base:"10100---________", regex : /^(r[0-7]),pc,(#[0-9]+)$/,args:[reg(8),uint(0,8,2)] },
             { base:"10101---________", regex : /^(r[0-7]),sp,(#[0-9]+)$/, args:[reg(8),uint(0,8,2)] },
             { base:"101100000_______", regex : /^sp,(#[0-9]+)$/, args:[uint(0,7,2)] },
             { base:"00011-0___---___", regex : /^(r[0-7]),(r[0-7]),([^,]+)$/, args:[reg(0),reg(3),reg_or_immediate(6,10)] } ], // Format 2: add/subtract
    "adds" :[{ base:"00011-0___---___", regex : /^(r[0-7]),(r[0-7]),([^,]+)$/, args:[reg(0),reg(3),reg_or_immediate(6,10)] } ], //?
    "adc.w":[{ base:"111010110100----________--------", regex : /^(r[0-7]),(r[0-7]),(r[0-7])$/,args:[reg(16),reg(8),reg(0)] }], // made this up. probably wrong
    "add.w":[{ base:"11110001--------________--------", regex : /^(r[0-7]),(r[0-7]),(#[0-9]+)$/,args:[reg(16),reg(8),uint(0,8,0)] }], // made this up. probably wrong
    "sub"  :[{ base:"00111---________", regex : /(r[0-7]),(#[0-9]+)$/, args:[reg(8),uint(0,8,0)] }, // move/compare/subtract immediate
              /*{ base:"10100---________", regex : /^([^,]+),pc,(#[0-9]+)$/,args:[reg(8),uint(0,8,2)] },*/
             { base:"101100001_______", regex : /^sp,(#[0-9]+)$/, args:[uint(0,7,2)] },
             { base:"00011-1___---___", regex : /^([^,]+),([^,]+),([^,]+)$/, args:[reg(0),reg(3),reg_or_immediate(6,10)] } ],

    "str"  :[{ base:"0101000---___---", regex : /(r[0-7]),\[(r[0-7]),(r[0-7])\]$/, args:[reg(0),reg(3),reg(6)] }, // 5.7 Format 7: load/store with register offset
             { base:"10010---________", regex : /(r[0-7]),\[sp,(#[0-9]+)\]$/, args:[reg(8),uint(0,8,2)] }, // 5.11 SP-relative store
             { base:"0110000000___---", regex : /(r[0-7]),\[(r[0-7])\]$/, args:[reg(0),reg(3)] }, // 5.9 Format 9: load/store with no offset
             { base:"0110000---___---", regex : /(r[0-7]),\[(r[0-7]),(#[0-9]+)\]$/, args:[reg(0),reg(3), uint(6,5,2)] }], // 5.9 Format 9: load/store with immediate offset
    "strb" :[{ base:"0101010---___---", regex : /(r[0-7]),\[(r[0-7]),(r[0-7])\]$/, args:[reg(0),reg(3),reg(6)] }, // 5.7 Format 7: load/store with register offset
             { base:"01110-----___---", regex : /(r[0-7]),\[(r[0-7]),(#[0-9]+)\]$/, args:[reg(0),reg(3), uint(6,5,0)] }], // 5.9 Format 9: load/store with immediate offset
    "strh" :[{ base:"0101001---___---", regex : /(r[0-7]),\[(r[0-7]),(r[0-7])\]$/, args:[reg(0),reg(3),reg(6)] }, // 5.7 Format 7: load/store with register offset
             { base:"10000-----___---", regex : /(r[0-7]),\[(r[0-7]),(#[0-9]+)\]$/, args:[reg(0),reg(3), uint(6,5,1)] }], // 5.9 Format 9: load/store with immediate offset
    "ldr"  :[{ base:"01001---________", regex : /(r[0-7]),\[pc,(#[0-9]+)\]$/, args:[reg(8),uint(0,8,2)] }, // 5.6 Format 6: PC-relative load
             { base:"10011---________", regex : /(r[0-7]),\[sp,(#[0-9]+)\]$/, args:[reg(8),uint(0,8,2)] }, // 5.11 SP-relative load
             { base:"01001---________", regex : /(r[0-7]),([a-zA-Z_][0-9a-zA-Z_]*)$/, args:[reg(8),uint(0,8,2)] }, // 5.6 Format 6: PC-relative load (using label)
             { base:"01001---________", regex : /(r[0-7]),([a-zA-Z_][0-9a-zA-Z_]*\+[0-9]+)$/, args:[reg(8),uint(0,8,2)] }, // 5.6 Format 6: PC-relative load (using label and maths - huge hack)
             { base:"0101100---___---", regex : /(r[0-7]),\[(r[0-7]),(r[0-7])\]$/, args:[reg(0),reg(3),reg(6)] }, // 5.7 Format 7: load/store with register offset
             { base:"0110100000___---", regex : /(r[0-7]),\[(r[0-7])\]$/, args:[reg(0),reg(3)] }, // 5.9 Format 9: load/store with no offset
             { base:"0110100---___---", regex : /(r[0-7]),\[(r[0-7]),(#[0-9]+)\]$/, args:[reg(0),reg(3), uint(6,5,2)] }], // 5.9 Format 9: load/store with immediate offset

    "ldrb" :[{ base:"0101110---___---", regex : /(r[0-7]),\[(r[0-7]),(r[0-7])\]$/, args:[reg(0),reg(3),reg(6)] }, // 5.7 Format 7: load/store with register offset
             { base:"01111-----___---", regex : /(r[0-7]),\[(r[0-7]),(#[0-9]+)\]$/, args:[reg(0),reg(3), uint(6,5,0)] }], // 5.9 Format 9: load/store with immediate offset
    "ldrsb":[{ base:"0101011---___---", regex : /(r[0-7]),\[(r[0-7]),(r[0-7])\]$/, args:[reg(0),reg(3),reg(6)] }], // 5.7 Format 7: load/store with register offset
    "ldrh" :[{ base:"0101101---___---", regex : /(r[0-7]),\[(r[0-7]),(r[0-7])\]$/, args:[reg(0),reg(3),reg(6)] }, // 5.7 Format 7: load/store with register offset
             { base:"10001-----___---", regex : /(r[0-7]),\[(r[0-7]),(#[0-9]+)\]$/, args:[reg(0),reg(3), uint(6,5,1)] }], // 5.9 Format 9: load/store with immediate offset
    "ldrsh":[{ base:"0101111---___---", regex : /(r[0-7]),\[(r[0-7]),(r[0-7])\]$/, args:[reg(0),reg(3),reg(6)] }], // 5.7 Format 7: load/store with register offset
    "mov"  :[{ base:"00100---________", regex : /(r[0-7]),(#[0-9]+)$/, args:[reg(8),uint(0,8,0)] }, // move/compare/subtract immediate
             { base:"0001110000---___", regex : /(r[0-7]),(r[0-7])$/, args:[reg(0),reg(3)] }, // actually 'add Rd,Rs,#0'
             { base:"0100011010---101", regex : /sp,(r[0-7])$/, args:[reg(3)] }], // made up again
    "movs" :[{ base:"00100---________", regex : /(r[0-7]),(#[0-9]+)$/, args:[reg(8),uint(0,8,0)] }], // is this even in thumb?
    "movw" :[{ base:"11110-100100----0___----________", regex : /(r[0-7]),(#[0-9]+)$/, args:[reg4(8),thumb2_immediate_t3] }],

    ".word":[{ base:"--------------------------------", regex : /0x([0-9A-Fa-f]+)$/, args:[function(v){v=parseInt(v,16);return (v>>16)|(v<<16);}] },
             { base:"--------------------------------", regex : /([0-9]+)$/, args:[function(v){v=parseInt(v);return (v>>16)|(v<<16);}] }],
    "nop"  :[{ base:"0100011011000000", regex : "", args:[] }], // MOV R8,R8 (Format 5)
    "cpsie"  :[{ base:"1011011001100010", regex : /i/, args:[] }], // made up again
    "cpsid"  :[{ base:"1011011001110010", regex : /i/, args:[] }], // made up again
    "wfe"    :[{ base:"1011111100100000", regex : /i/, args:[] }],
    "wfi"    :[{ base:"1011111100110000", regex : /i/, args:[] }],

   // for this, uint needs to work without a hash
//    "swi"    :[{ base:"11011111--------", regex : /([0-9]+)$/, args:[uint(0,8,0)] }], // Format 17: software interrupt
  };


  function getOpCode(binary) {
   var base = "";
   for (var b in binary)
     if ("-_".indexOf(binary[b])>=0)
       base += "0";
     else
       base += binary[b];
   var opCode = parseInt(base,2);
   if (opCode<0) opCode = opCode + 2147483648.0;
   return opCode;
  }

  function assemble_internal(asmLines, wordCallback, labels) {
    var addr = 0;
    var newLabels = {};
    asmLines.forEach(function (line) {
      // setup labels
      if (labels!==undefined)
        labels["PC"] = addr+4;
      // handle line
      line = line.trim();
      if (line=="") return;
      if (line.substr(-1)==":") {
        // it's a label
        var labelName = line.substr(0,line.length-1);
        if (newLabels[labelName] !== undefined)
          throw "Label '"+labelName+"' was already defined";
        newLabels[labelName] = addr;
        return;
      }

      // parse instruction
      var firstArgEnd = line.indexOf("\t");
      if (firstArgEnd<0) firstArgEnd = line.indexOf(" ");
      if (firstArgEnd<0) firstArgEnd=line.length;
      var opName = line.substr(0,firstArgEnd);
      var args = line.substr(firstArgEnd).replace(/[ \t]/g,"").trim();
      if (!(opName in ops)) throw "Unknown Op '"+opName+"' in '"+line+"'";
      // search ops
      var found = false;
      for (var n in ops[opName]) {
        var op = ops[opName][n];
        var m;
        if ((m=args.match(op.regex))) {
          found = true;
          // work out the base opcode
          var opCode = getOpCode(op.base);

          if (labels!==undefined) {
            /* If we're properly generating code, parse each argument.
             Otherwise we're just working out the size in bytes of each line
             and we can skip this */
            for (var i in op.args) {
              //console.log(i,m[(i|0)+1]);
              var argFunction = op.args[i];
              var bits = argFunction(m[(i|0)+1], labels);
              //console.log("  ",bits)
              opCode |= bits;
            }
          }

          if (op.base.length > 16) {
            wordCallback((opCode>>>16));
            wordCallback(opCode&0xFFFF);
            addr += 4;
          } else {
            wordCallback(opCode);
            addr += 2;
          }
          break;
        }
      }
      // now parse args
      if (!found)
        throw "Unknown arg style '"+args+"' in '"+line+"'";
    });
    return newLabels;
  }

  function assemble(asmLines, wordCallback) {
    // remove line comments
    asmLines = asmLines.map(function(l) {
      var i;
      i = l.indexOf(";");
      if (i>=0) l = l.substr(0,i);
      i = l.indexOf("//");
      if (i>=0) l = l.substr(0,i);
      return l;
    });
    // process assembly to grab labels
    var labels = assemble_internal(asmLines, function() {}, undefined);
    console.log("Assembler Labels:",labels);
    // process again to actually get an output
    assemble_internal(asmLines, wordCallback, labels);
  }

//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------

  function init() {
    // When code is sent to Espruino, search it for bits of assembler and then assemble them
    Espruino.addProcessor("transformForEspruino", function(code, callback) {
      findASMBlocks(code, "", callback);
    });
    // When a module is sent to Espruino...
    Espruino.addProcessor("transformModuleForEspruino", function(module, callback) {
      findASMBlocks(module.code, " in "+module.name, function(code) {
        module.code = code;
        callback(module);
      });
    });
  }

  function assembleBlock(asmLines, description) {
    if (!Espruino.Core.Utils.isARMThumb()) {
      Espruino.Core.Notifications.error("E.asm() requires an ARM Thumb processor");
      return undefined; // fail
    }
    var machineCode = [];
    try {
      assemble(asmLines, function(word) { machineCode.push("0x"+word.toString(16)); });
    } catch (err) {
      console.log("Assembler failed: "+err+description);
      Espruino.Core.Notifications.error("Assembler failed: "+err+description);
      return undefined;
    }

    return machineCode;
  }

  /* Finds instances of 'E.asm' and replaces them */
  function findASMBlocks(code, description, callback){

    function match(str, type) {
      if (str!==undefined && tok.str!=str) {
        Espruino.Core.Notifications.error("Expecting '"+str+"' but got '"+tok.str+description+"'. Should have E.asm('arg spec', 'asmline1', ..., 'asmline2'");
        return false;
      }
      if (type!==undefined && tok.type!=type) {
        Espruino.Core.Notifications.error("Expecting a "+type+" but got "+tok.type+description+". Should have E.asm('arg spec', 'asmline1', ..., 'asmline2'");
        return false;
      }
      tok = lex.next();
      return true;
    }

    var foundAsm = true;
    var assembledCode = "";
    var asmBlockCount = 1;
    while (foundAsm) {
      foundAsm = false;
      var lex = Espruino.Core.Utils.getLexer(code);
      var tok = lex.next();
      var state = 0;
      var startIndex = -1;
      while (tok!==undefined) {
        if (state==0 && tok.str=="E") { state=1; startIndex = tok.startIdx; tok = lex.next();
        } else if (state==1 && tok.str==".") { state=2; tok = lex.next();
        } else if (state==2 && (tok.str=="asm")) { state=3; tok = lex.next();
        } else if (state==3 && (tok.str=="(")) {
          foundAsm = true;
          state=0;
          tok = lex.next(); // skip (
          var argSpec = tok.value;
          var asmLines = [];
          if (!match(undefined,"STRING")) return;
          if (!match(",",undefined)) return;
          while (tok && tok.str!=")") {
            var lines = tok.value.split("\n");
            lines.forEach(function(l) {
              asmLines.push(l);
            });
            if (!match(undefined,"STRING")) return;
            if (tok.str!=")")
              if (!match(",",undefined)) return;
          }
          if (!match(")",undefined)) return;
          var endIndex = tok.endIdx;

          var machineCode = assembleBlock(asmLines, description);
          //console.log(machineCode);
          if (machineCode===undefined) return; // There was an error - just leave and don't try to flash
          var raw = "";
          machineCode.forEach(function(short) {
            var v = parseInt(short,16);
            raw += String.fromCharCode(v&255,v>>8);
          });
          var base64 = base64_encode(raw);
          code = code.substr(0,startIndex) +
                 'E.nativeCall(1, '+JSON.stringify(argSpec)+', atob('+JSON.stringify(base64)+'))'+
                 code.substr(endIndex);
          asmBlockCount++;

          // Break out
          tok = undefined;
        } else {
          state = 0;
          tok = lex.next();
        }
      }
    }

    if (assembledCode!="") {
      code = "var ASM_BASE=process.memory().stackEndAddress;\n"+
             assembledCode+
             code;
    }
    callback(code);
  }


  Espruino.Plugins.Assembler = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/plugins/getGitHub.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Try and get any URLS that are from GitHub
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    Espruino.addProcessor("getURL", getGitHub);
  }

  function getGitHub(data, callback) {
    var match = data.url.match(/^https?:\/\/github.com\/([^/]+)\/([^/]+)\/blob\/([^/]+)\/(.*)$/);
    if (match) {
      var git = {
          owner : match[1],
          repo : match[2],
          branch : match[3],
          path : match[4]
          };

      var url = "https://raw.githubusercontent.com/"+git.owner+"/"+git.repo+"/"+git.branch+"/"+git.path;
      console.log("Found GitHub", JSON.stringify(git));
      callback({url: url});
    } else
      callback(data); // no match - continue as normal
  }

  Espruino.Plugins.GetGitHub = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/libs/utf8.js
   -------------------------------------------------------------- */
/*! https://mths.be/utf8js v2.0.0 by @mathias */
;(function(root) {

	// Detect free variables `exports`
	var freeExports = typeof exports == 'object' && exports;

	// Detect free variable `module`
	var freeModule = typeof module == 'object' && module &&
		module.exports == freeExports && module;

	// Detect free variable `global`, from Node.js or Browserified code,
	// and use it as `root`
	var freeGlobal = typeof global == 'object' && global;
	if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
		root = freeGlobal;
	}

	/*--------------------------------------------------------------------------*/

	var stringFromCharCode = String.fromCharCode;

	// Taken from https://mths.be/punycode
	function ucs2decode(string) {
		var output = [];
		var counter = 0;
		var length = string.length;
		var value;
		var extra;
		while (counter < length) {
			value = string.charCodeAt(counter++);
			if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
				// high surrogate, and there is a next character
				extra = string.charCodeAt(counter++);
				if ((extra & 0xFC00) == 0xDC00) { // low surrogate
					output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
				} else {
					// unmatched surrogate; only append this code unit, in case the next
					// code unit is the high surrogate of a surrogate pair
					output.push(value);
					counter--;
				}
			} else {
				output.push(value);
			}
		}
		return output;
	}

	// Taken from https://mths.be/punycode
	function ucs2encode(array) {
		var length = array.length;
		var index = -1;
		var value;
		var output = '';
		while (++index < length) {
			value = array[index];
			if (value > 0xFFFF) {
				value -= 0x10000;
				output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
				value = 0xDC00 | value & 0x3FF;
			}
			output += stringFromCharCode(value);
		}
		return output;
	}

	function checkScalarValue(codePoint) {
		if (codePoint >= 0xD800 && codePoint <= 0xDFFF) {
			throw Error(
				'Lone surrogate U+' + codePoint.toString(16).toUpperCase() +
				' is not a scalar value'
			);
		}
	}
	/*--------------------------------------------------------------------------*/

	function createByte(codePoint, shift) {
		return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
	}

	function encodeCodePoint(codePoint) {
		if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
			return stringFromCharCode(codePoint);
		}
		var symbol = '';
		if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
			symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);
		}
		else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
			checkScalarValue(codePoint);
			symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);
			symbol += createByte(codePoint, 6);
		}
		else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
			symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);
			symbol += createByte(codePoint, 12);
			symbol += createByte(codePoint, 6);
		}
		symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
		return symbol;
	}

	function utf8encode(string) {
		var codePoints = ucs2decode(string);
		var length = codePoints.length;
		var index = -1;
		var codePoint;
		var byteString = '';
		while (++index < length) {
			codePoint = codePoints[index];
			byteString += encodeCodePoint(codePoint);
		}
		return byteString;
	}

	/*--------------------------------------------------------------------------*/

	function readContinuationByte() {
		if (byteIndex >= byteCount) {
			throw Error('Invalid byte index');
		}

		var continuationByte = byteArray[byteIndex] & 0xFF;
		byteIndex++;

		if ((continuationByte & 0xC0) == 0x80) {
			return continuationByte & 0x3F;
		}

		// If we end up here, it’s not a continuation byte
		throw Error('Invalid continuation byte');
	}

	function decodeSymbol() {
		var byte1;
		var byte2;
		var byte3;
		var byte4;
		var codePoint;

		if (byteIndex > byteCount) {
			throw Error('Invalid byte index');
		}

		if (byteIndex == byteCount) {
			return false;
		}

		// Read first byte
		byte1 = byteArray[byteIndex] & 0xFF;
		byteIndex++;

		// 1-byte sequence (no continuation bytes)
		if ((byte1 & 0x80) == 0) {
			return byte1;
		}

		// 2-byte sequence
		if ((byte1 & 0xE0) == 0xC0) {
			var byte2 = readContinuationByte();
			codePoint = ((byte1 & 0x1F) << 6) | byte2;
			if (codePoint >= 0x80) {
				return codePoint;
			} else {
				throw Error('Invalid continuation byte');
			}
		}

		// 3-byte sequence (may include unpaired surrogates)
		if ((byte1 & 0xF0) == 0xE0) {
			byte2 = readContinuationByte();
			byte3 = readContinuationByte();
			codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
			if (codePoint >= 0x0800) {
				checkScalarValue(codePoint);
				return codePoint;
			} else {
				throw Error('Invalid continuation byte');
			}
		}

		// 4-byte sequence
		if ((byte1 & 0xF8) == 0xF0) {
			byte2 = readContinuationByte();
			byte3 = readContinuationByte();
			byte4 = readContinuationByte();
			codePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) |
				(byte3 << 0x06) | byte4;
			if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
				return codePoint;
			}
		}

		throw Error('Invalid UTF-8 detected');
	}

	var byteArray;
	var byteCount;
	var byteIndex;
	function utf8decode(byteString) {
		byteArray = ucs2decode(byteString);
		byteCount = byteArray.length;
		byteIndex = 0;
		var codePoints = [];
		var tmp;
		while ((tmp = decodeSymbol()) !== false) {
			codePoints.push(tmp);
		}
		return ucs2encode(codePoints);
	}

	/*--------------------------------------------------------------------------*/

	var utf8 = {
		'version': '2.0.0',
		'encode': utf8encode,
		'decode': utf8decode
	};

	// Some AMD build optimizers, like r.js, check for specific condition patterns
	// like the following:
	if (
		typeof define == 'function' &&
		typeof define.amd == 'object' &&
		define.amd
	) {
		define(function() {
			return utf8;
		});
	}	else if (freeExports && !freeExports.nodeType) {
		if (freeModule) { // in Node.js or RingoJS v0.8.0+
			freeModule.exports = utf8;
		} else { // in Narwhal or RingoJS v0.7.0-
			var object = {};
			var hasOwnProperty = object.hasOwnProperty;
			for (var key in utf8) {
				hasOwnProperty.call(utf8, key) && (freeExports[key] = utf8[key]);
			}
		}
	} else { // in Rhino or a web browser
		root.utf8 = utf8;
	}

}(this));
/* --------------------------------------------------------------
         EspruinoTools/plugins/unicode.js
   -------------------------------------------------------------- */
/**
 Copyright 2015 Gordon Williams (gw@pur3.co.uk),
                Victor Nakoryakov (victor@amperka.ru)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Escape non-ASCII characters into \xHH UTF-8 sequences before send
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  // Node.js doesn't have utf8 installed
  var utf8lib;
  if ("undefined"==typeof utf8) {
    if ("undefined"!=typeof require) {
      console.log("Loading UTF8 with require");
      utf8lib = require('utf8');
    } else {
      console.log("WARNING: Loading placeholder UTF8");
      utf8lib = { encode : function(c){return c} };
    }
  } else {
    console.log("UTF8 Library loaded successfully");
    utf8lib = utf8;
  }

  function init() {
    // Configuration
    Espruino.Core.Config.add("UNICODE", {
      section : "Communications",
      name : "Unicode transforms",
      description : "When encountering non-ASCII characters in strings, encode them into UTF-8 unicode",
      type : "boolean",
      defaultValue : false,
    });
    // code transforms
    Espruino.addProcessor("transformForEspruino", function(code, callback) {
      if (Espruino.Config.UNICODE)
        escapeUnicode(code, callback);
      else
        callback(code);
    });
  }

  function escapeUnicode(code, callback) {
    // Only correct unicode inside strings
    var newCode = "";
    var lex = Espruino.Core.Utils.getLexer(code);
    var lastIdx = 0;
    var tok = lex.next();
    while (tok!==undefined) {
      var previousString = code.substring(lastIdx, tok.startIdx);
      var tokenString = code.substring(tok.startIdx, tok.endIdx);
      if (tok.type=="STRING") {
        var newTokenString = "";
        for (var i=0;i<tokenString.length;i++) {
          var ch = tokenString.charCodeAt(i);
          if (ch >= 255)
            newTokenString += escapeChar(tokenString[i]);
          else
            newTokenString += tokenString[i];
        }
        tokenString = newTokenString;
      }
      newCode += previousString+tokenString;
      // next
      lastIdx = tok.endIdx;
      tok = lex.next();
    }
    newCode += code.substring(lastIdx);
    callback(newCode);
  }

  function escapeChar(c) {
    // encode char into UTF-8 sequence in form of \xHH codes
    var result = '';
    utf8lib.encode(c).split('').forEach(function(c) {
      var code = c.charCodeAt(0) & 0xFF;
      result += "\\x";
      if (code < 0x10) result += '0';
      result += code.toString(16).toUpperCase();
    });

    return result;
  }

  Espruino.Plugins.Unicode = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/libs/esprima/esprima.js
   -------------------------------------------------------------- */
(function webpackUniversalModuleDefinition(root, factory) {
/* istanbul ignore next */
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
	else if(typeof define === 'function' && define.amd)
		define([], factory);
/* istanbul ignore next */
	else if(typeof exports === 'object')
		exports["esprima"] = factory();
	else
		root["esprima"] = factory();
})(this, function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};

/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {

/******/ 		// Check if module is in cache
/* istanbul ignore if */
/******/ 		if(installedModules[moduleId])
/******/ 			return installedModules[moduleId].exports;

/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			exports: {},
/******/ 			id: moduleId,
/******/ 			loaded: false
/******/ 		};

/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);

/******/ 		// Flag the module as loaded
/******/ 		module.loaded = true;

/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}


/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;

/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;

/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";

/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	/*
	  Copyright JS Foundation and other contributors, https://js.foundation/

	  Redistribution and use in source and binary forms, with or without
	  modification, are permitted provided that the following conditions are met:

	    * Redistributions of source code must retain the above copyright
	      notice, this list of conditions and the following disclaimer.
	    * Redistributions in binary form must reproduce the above copyright
	      notice, this list of conditions and the following disclaimer in the
	      documentation and/or other materials provided with the distribution.

	  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
	  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/
	Object.defineProperty(exports, "__esModule", { value: true });
	var comment_handler_1 = __webpack_require__(1);
	var jsx_parser_1 = __webpack_require__(3);
	var parser_1 = __webpack_require__(8);
	var tokenizer_1 = __webpack_require__(15);
	function parse(code, options, delegate) {
	    var commentHandler = null;
	    var proxyDelegate = function (node, metadata) {
	        if (delegate) {
	            delegate(node, metadata);
	        }
	        if (commentHandler) {
	            commentHandler.visit(node, metadata);
	        }
	    };
	    var parserDelegate = (typeof delegate === 'function') ? proxyDelegate : null;
	    var collectComment = false;
	    if (options) {
	        collectComment = (typeof options.comment === 'boolean' && options.comment);
	        var attachComment = (typeof options.attachComment === 'boolean' && options.attachComment);
	        if (collectComment || attachComment) {
	            commentHandler = new comment_handler_1.CommentHandler();
	            commentHandler.attach = attachComment;
	            options.comment = true;
	            parserDelegate = proxyDelegate;
	        }
	    }
	    var isModule = false;
	    if (options && typeof options.sourceType === 'string') {
	        isModule = (options.sourceType === 'module');
	    }
	    var parser;
	    if (options && typeof options.jsx === 'boolean' && options.jsx) {
	        parser = new jsx_parser_1.JSXParser(code, options, parserDelegate);
	    }
	    else {
	        parser = new parser_1.Parser(code, options, parserDelegate);
	    }
	    var program = isModule ? parser.parseModule() : parser.parseScript();
	    var ast = program;
	    if (collectComment && commentHandler) {
	        ast.comments = commentHandler.comments;
	    }
	    if (parser.config.tokens) {
	        ast.tokens = parser.tokens;
	    }
	    if (parser.config.tolerant) {
	        ast.errors = parser.errorHandler.errors;
	    }
	    return ast;
	}
	exports.parse = parse;
	function parseModule(code, options, delegate) {
	    var parsingOptions = options || {};
	    parsingOptions.sourceType = 'module';
	    return parse(code, parsingOptions, delegate);
	}
	exports.parseModule = parseModule;
	function parseScript(code, options, delegate) {
	    var parsingOptions = options || {};
	    parsingOptions.sourceType = 'script';
	    return parse(code, parsingOptions, delegate);
	}
	exports.parseScript = parseScript;
	function tokenize(code, options, delegate) {
	    var tokenizer = new tokenizer_1.Tokenizer(code, options);
	    var tokens;
	    tokens = [];
	    try {
	        while (true) {
	            var token = tokenizer.getNextToken();
	            if (!token) {
	                break;
	            }
	            if (delegate) {
	                token = delegate(token);
	            }
	            tokens.push(token);
	        }
	    }
	    catch (e) {
	        tokenizer.errorHandler.tolerate(e);
	    }
	    if (tokenizer.errorHandler.tolerant) {
	        tokens.errors = tokenizer.errors();
	    }
	    return tokens;
	}
	exports.tokenize = tokenize;
	var syntax_1 = __webpack_require__(2);
	exports.Syntax = syntax_1.Syntax;
	// Sync with *.json manifests.
	exports.version = '4.0.1';


/***/ },
/* 1 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var syntax_1 = __webpack_require__(2);
	var CommentHandler = (function () {
	    function CommentHandler() {
	        this.attach = false;
	        this.comments = [];
	        this.stack = [];
	        this.leading = [];
	        this.trailing = [];
	    }
	    CommentHandler.prototype.insertInnerComments = function (node, metadata) {
	        //  innnerComments for properties empty block
	        //  `function a() {/** comments **\/}`
	        if (node.type === syntax_1.Syntax.BlockStatement && node.body.length === 0) {
	            var innerComments = [];
	            for (var i = this.leading.length - 1; i >= 0; --i) {
	                var entry = this.leading[i];
	                if (metadata.end.offset >= entry.start) {
	                    innerComments.unshift(entry.comment);
	                    this.leading.splice(i, 1);
	                    this.trailing.splice(i, 1);
	                }
	            }
	            if (innerComments.length) {
	                node.innerComments = innerComments;
	            }
	        }
	    };
	    CommentHandler.prototype.findTrailingComments = function (metadata) {
	        var trailingComments = [];
	        if (this.trailing.length > 0) {
	            for (var i = this.trailing.length - 1; i >= 0; --i) {
	                var entry_1 = this.trailing[i];
	                if (entry_1.start >= metadata.end.offset) {
	                    trailingComments.unshift(entry_1.comment);
	                }
	            }
	            this.trailing.length = 0;
	            return trailingComments;
	        }
	        var entry = this.stack[this.stack.length - 1];
	        if (entry && entry.node.trailingComments) {
	            var firstComment = entry.node.trailingComments[0];
	            if (firstComment && firstComment.range[0] >= metadata.end.offset) {
	                trailingComments = entry.node.trailingComments;
	                delete entry.node.trailingComments;
	            }
	        }
	        return trailingComments;
	    };
	    CommentHandler.prototype.findLeadingComments = function (metadata) {
	        var leadingComments = [];
	        var target;
	        while (this.stack.length > 0) {
	            var entry = this.stack[this.stack.length - 1];
	            if (entry && entry.start >= metadata.start.offset) {
	                target = entry.node;
	                this.stack.pop();
	            }
	            else {
	                break;
	            }
	        }
	        if (target) {
	            var count = target.leadingComments ? target.leadingComments.length : 0;
	            for (var i = count - 1; i >= 0; --i) {
	                var comment = target.leadingComments[i];
	                if (comment.range[1] <= metadata.start.offset) {
	                    leadingComments.unshift(comment);
	                    target.leadingComments.splice(i, 1);
	                }
	            }
	            if (target.leadingComments && target.leadingComments.length === 0) {
	                delete target.leadingComments;
	            }
	            return leadingComments;
	        }
	        for (var i = this.leading.length - 1; i >= 0; --i) {
	            var entry = this.leading[i];
	            if (entry.start <= metadata.start.offset) {
	                leadingComments.unshift(entry.comment);
	                this.leading.splice(i, 1);
	            }
	        }
	        return leadingComments;
	    };
	    CommentHandler.prototype.visitNode = function (node, metadata) {
	        if (node.type === syntax_1.Syntax.Program && node.body.length > 0) {
	            return;
	        }
	        this.insertInnerComments(node, metadata);
	        var trailingComments = this.findTrailingComments(metadata);
	        var leadingComments = this.findLeadingComments(metadata);
	        if (leadingComments.length > 0) {
	            node.leadingComments = leadingComments;
	        }
	        if (trailingComments.length > 0) {
	            node.trailingComments = trailingComments;
	        }
	        this.stack.push({
	            node: node,
	            start: metadata.start.offset
	        });
	    };
	    CommentHandler.prototype.visitComment = function (node, metadata) {
	        var type = (node.type[0] === 'L') ? 'Line' : 'Block';
	        var comment = {
	            type: type,
	            value: node.value
	        };
	        if (node.range) {
	            comment.range = node.range;
	        }
	        if (node.loc) {
	            comment.loc = node.loc;
	        }
	        this.comments.push(comment);
	        if (this.attach) {
	            var entry = {
	                comment: {
	                    type: type,
	                    value: node.value,
	                    range: [metadata.start.offset, metadata.end.offset]
	                },
	                start: metadata.start.offset
	            };
	            if (node.loc) {
	                entry.comment.loc = node.loc;
	            }
	            node.type = type;
	            this.leading.push(entry);
	            this.trailing.push(entry);
	        }
	    };
	    CommentHandler.prototype.visit = function (node, metadata) {
	        if (node.type === 'LineComment') {
	            this.visitComment(node, metadata);
	        }
	        else if (node.type === 'BlockComment') {
	            this.visitComment(node, metadata);
	        }
	        else if (this.attach) {
	            this.visitNode(node, metadata);
	        }
	    };
	    return CommentHandler;
	}());
	exports.CommentHandler = CommentHandler;


/***/ },
/* 2 */
/***/ function(module, exports) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	exports.Syntax = {
	    AssignmentExpression: 'AssignmentExpression',
	    AssignmentPattern: 'AssignmentPattern',
	    ArrayExpression: 'ArrayExpression',
	    ArrayPattern: 'ArrayPattern',
	    ArrowFunctionExpression: 'ArrowFunctionExpression',
	    AwaitExpression: 'AwaitExpression',
	    BlockStatement: 'BlockStatement',
	    BinaryExpression: 'BinaryExpression',
	    BreakStatement: 'BreakStatement',
	    CallExpression: 'CallExpression',
	    CatchClause: 'CatchClause',
	    ClassBody: 'ClassBody',
	    ClassDeclaration: 'ClassDeclaration',
	    ClassExpression: 'ClassExpression',
	    ConditionalExpression: 'ConditionalExpression',
	    ContinueStatement: 'ContinueStatement',
	    DoWhileStatement: 'DoWhileStatement',
	    DebuggerStatement: 'DebuggerStatement',
	    EmptyStatement: 'EmptyStatement',
	    ExportAllDeclaration: 'ExportAllDeclaration',
	    ExportDefaultDeclaration: 'ExportDefaultDeclaration',
	    ExportNamedDeclaration: 'ExportNamedDeclaration',
	    ExportSpecifier: 'ExportSpecifier',
	    ExpressionStatement: 'ExpressionStatement',
	    ForStatement: 'ForStatement',
	    ForOfStatement: 'ForOfStatement',
	    ForInStatement: 'ForInStatement',
	    FunctionDeclaration: 'FunctionDeclaration',
	    FunctionExpression: 'FunctionExpression',
	    Identifier: 'Identifier',
	    IfStatement: 'IfStatement',
	    ImportDeclaration: 'ImportDeclaration',
	    ImportDefaultSpecifier: 'ImportDefaultSpecifier',
	    ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
	    ImportSpecifier: 'ImportSpecifier',
	    Literal: 'Literal',
	    LabeledStatement: 'LabeledStatement',
	    LogicalExpression: 'LogicalExpression',
	    MemberExpression: 'MemberExpression',
	    MetaProperty: 'MetaProperty',
	    MethodDefinition: 'MethodDefinition',
	    NewExpression: 'NewExpression',
	    ObjectExpression: 'ObjectExpression',
	    ObjectPattern: 'ObjectPattern',
	    Program: 'Program',
	    Property: 'Property',
	    RestElement: 'RestElement',
	    ReturnStatement: 'ReturnStatement',
	    SequenceExpression: 'SequenceExpression',
	    SpreadElement: 'SpreadElement',
	    Super: 'Super',
	    SwitchCase: 'SwitchCase',
	    SwitchStatement: 'SwitchStatement',
	    TaggedTemplateExpression: 'TaggedTemplateExpression',
	    TemplateElement: 'TemplateElement',
	    TemplateLiteral: 'TemplateLiteral',
	    ThisExpression: 'ThisExpression',
	    ThrowStatement: 'ThrowStatement',
	    TryStatement: 'TryStatement',
	    UnaryExpression: 'UnaryExpression',
	    UpdateExpression: 'UpdateExpression',
	    VariableDeclaration: 'VariableDeclaration',
	    VariableDeclarator: 'VariableDeclarator',
	    WhileStatement: 'WhileStatement',
	    WithStatement: 'WithStatement',
	    YieldExpression: 'YieldExpression'
	};


/***/ },
/* 3 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
/* istanbul ignore next */
	var __extends = (this && this.__extends) || (function () {
	    var extendStatics = Object.setPrototypeOf ||
	        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
	        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
	    return function (d, b) {
	        extendStatics(d, b);
	        function __() { this.constructor = d; }
	        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
	    };
	})();
	Object.defineProperty(exports, "__esModule", { value: true });
	var character_1 = __webpack_require__(4);
	var JSXNode = __webpack_require__(5);
	var jsx_syntax_1 = __webpack_require__(6);
	var Node = __webpack_require__(7);
	var parser_1 = __webpack_require__(8);
	var token_1 = __webpack_require__(13);
	var xhtml_entities_1 = __webpack_require__(14);
	token_1.TokenName[100 /* Identifier */] = 'JSXIdentifier';
	token_1.TokenName[101 /* Text */] = 'JSXText';
	// Fully qualified element name, e.g. <svg:path> returns "svg:path"
	function getQualifiedElementName(elementName) {
	    var qualifiedName;
	    switch (elementName.type) {
	        case jsx_syntax_1.JSXSyntax.JSXIdentifier:
	            var id = elementName;
	            qualifiedName = id.name;
	            break;
	        case jsx_syntax_1.JSXSyntax.JSXNamespacedName:
	            var ns = elementName;
	            qualifiedName = getQualifiedElementName(ns.namespace) + ':' +
	                getQualifiedElementName(ns.name);
	            break;
	        case jsx_syntax_1.JSXSyntax.JSXMemberExpression:
	            var expr = elementName;
	            qualifiedName = getQualifiedElementName(expr.object) + '.' +
	                getQualifiedElementName(expr.property);
	            break;
	        /* istanbul ignore next */
	        default:
	            break;
	    }
	    return qualifiedName;
	}
	var JSXParser = (function (_super) {
	    __extends(JSXParser, _super);
	    function JSXParser(code, options, delegate) {
	        return _super.call(this, code, options, delegate) || this;
	    }
	    JSXParser.prototype.parsePrimaryExpression = function () {
	        return this.match('<') ? this.parseJSXRoot() : _super.prototype.parsePrimaryExpression.call(this);
	    };
	    JSXParser.prototype.startJSX = function () {
	        // Unwind the scanner before the lookahead token.
	        this.scanner.index = this.startMarker.index;
	        this.scanner.lineNumber = this.startMarker.line;
	        this.scanner.lineStart = this.startMarker.index - this.startMarker.column;
	    };
	    JSXParser.prototype.finishJSX = function () {
	        // Prime the next lookahead.
	        this.nextToken();
	    };
	    JSXParser.prototype.reenterJSX = function () {
	        this.startJSX();
	        this.expectJSX('}');
	        // Pop the closing '}' added from the lookahead.
	        if (this.config.tokens) {
	            this.tokens.pop();
	        }
	    };
	    JSXParser.prototype.createJSXNode = function () {
	        this.collectComments();
	        return {
	            index: this.scanner.index,
	            line: this.scanner.lineNumber,
	            column: this.scanner.index - this.scanner.lineStart
	        };
	    };
	    JSXParser.prototype.createJSXChildNode = function () {
	        return {
	            index: this.scanner.index,
	            line: this.scanner.lineNumber,
	            column: this.scanner.index - this.scanner.lineStart
	        };
	    };
	    JSXParser.prototype.scanXHTMLEntity = function (quote) {
	        var result = '&';
	        var valid = true;
	        var terminated = false;
	        var numeric = false;
	        var hex = false;
	        while (!this.scanner.eof() && valid && !terminated) {
	            var ch = this.scanner.source[this.scanner.index];
	            if (ch === quote) {
	                break;
	            }
	            terminated = (ch === ';');
	            result += ch;
	            ++this.scanner.index;
	            if (!terminated) {
	                switch (result.length) {
	                    case 2:
	                        // e.g. '&#123;'
	                        numeric = (ch === '#');
	                        break;
	                    case 3:
	                        if (numeric) {
	                            // e.g. '&#x41;'
	                            hex = (ch === 'x');
	                            valid = hex || character_1.Character.isDecimalDigit(ch.charCodeAt(0));
	                            numeric = numeric && !hex;
	                        }
	                        break;
	                    default:
	                        valid = valid && !(numeric && !character_1.Character.isDecimalDigit(ch.charCodeAt(0)));
	                        valid = valid && !(hex && !character_1.Character.isHexDigit(ch.charCodeAt(0)));
	                        break;
	                }
	            }
	        }
	        if (valid && terminated && result.length > 2) {
	            // e.g. '&#x41;' becomes just '#x41'
	            var str = result.substr(1, result.length - 2);
	            if (numeric && str.length > 1) {
	                result = String.fromCharCode(parseInt(str.substr(1), 10));
	            }
	            else if (hex && str.length > 2) {
	                result = String.fromCharCode(parseInt('0' + str.substr(1), 16));
	            }
	            else if (!numeric && !hex && xhtml_entities_1.XHTMLEntities[str]) {
	                result = xhtml_entities_1.XHTMLEntities[str];
	            }
	        }
	        return result;
	    };
	    // Scan the next JSX token. This replaces Scanner#lex when in JSX mode.
	    JSXParser.prototype.lexJSX = function () {
	        var cp = this.scanner.source.charCodeAt(this.scanner.index);
	        // < > / : = { }
	        if (cp === 60 || cp === 62 || cp === 47 || cp === 58 || cp === 61 || cp === 123 || cp === 125) {
	            var value = this.scanner.source[this.scanner.index++];
	            return {
	                type: 7 /* Punctuator */,
	                value: value,
	                lineNumber: this.scanner.lineNumber,
	                lineStart: this.scanner.lineStart,
	                start: this.scanner.index - 1,
	                end: this.scanner.index
	            };
	        }
	        // " '
	        if (cp === 34 || cp === 39) {
	            var start = this.scanner.index;
	            var quote = this.scanner.source[this.scanner.index++];
	            var str = '';
	            while (!this.scanner.eof()) {
	                var ch = this.scanner.source[this.scanner.index++];
	                if (ch === quote) {
	                    break;
	                }
	                else if (ch === '&') {
	                    str += this.scanXHTMLEntity(quote);
	                }
	                else {
	                    str += ch;
	                }
	            }
	            return {
	                type: 8 /* StringLiteral */,
	                value: str,
	                lineNumber: this.scanner.lineNumber,
	                lineStart: this.scanner.lineStart,
	                start: start,
	                end: this.scanner.index
	            };
	        }
	        // ... or .
	        if (cp === 46) {
	            var n1 = this.scanner.source.charCodeAt(this.scanner.index + 1);
	            var n2 = this.scanner.source.charCodeAt(this.scanner.index + 2);
	            var value = (n1 === 46 && n2 === 46) ? '...' : '.';
	            var start = this.scanner.index;
	            this.scanner.index += value.length;
	            return {
	                type: 7 /* Punctuator */,
	                value: value,
	                lineNumber: this.scanner.lineNumber,
	                lineStart: this.scanner.lineStart,
	                start: start,
	                end: this.scanner.index
	            };
	        }
	        // `
	        if (cp === 96) {
	            // Only placeholder, since it will be rescanned as a real assignment expression.
	            return {
	                type: 10 /* Template */,
	                value: '',
	                lineNumber: this.scanner.lineNumber,
	                lineStart: this.scanner.lineStart,
	                start: this.scanner.index,
	                end: this.scanner.index
	            };
	        }
	        // Identifer can not contain backslash (char code 92).
	        if (character_1.Character.isIdentifierStart(cp) && (cp !== 92)) {
	            var start = this.scanner.index;
	            ++this.scanner.index;
	            while (!this.scanner.eof()) {
	                var ch = this.scanner.source.charCodeAt(this.scanner.index);
	                if (character_1.Character.isIdentifierPart(ch) && (ch !== 92)) {
	                    ++this.scanner.index;
	                }
	                else if (ch === 45) {
	                    // Hyphen (char code 45) can be part of an identifier.
	                    ++this.scanner.index;
	                }
	                else {
	                    break;
	                }
	            }
	            var id = this.scanner.source.slice(start, this.scanner.index);
	            return {
	                type: 100 /* Identifier */,
	                value: id,
	                lineNumber: this.scanner.lineNumber,
	                lineStart: this.scanner.lineStart,
	                start: start,
	                end: this.scanner.index
	            };
	        }
	        return this.scanner.lex();
	    };
	    JSXParser.prototype.nextJSXToken = function () {
	        this.collectComments();
	        this.startMarker.index = this.scanner.index;
	        this.startMarker.line = this.scanner.lineNumber;
	        this.startMarker.column = this.scanner.index - this.scanner.lineStart;
	        var token = this.lexJSX();
	        this.lastMarker.index = this.scanner.index;
	        this.lastMarker.line = this.scanner.lineNumber;
	        this.lastMarker.column = this.scanner.index - this.scanner.lineStart;
	        if (this.config.tokens) {
	            this.tokens.push(this.convertToken(token));
	        }
	        return token;
	    };
	    JSXParser.prototype.nextJSXText = function () {
	        this.startMarker.index = this.scanner.index;
	        this.startMarker.line = this.scanner.lineNumber;
	        this.startMarker.column = this.scanner.index - this.scanner.lineStart;
	        var start = this.scanner.index;
	        var text = '';
	        while (!this.scanner.eof()) {
	            var ch = this.scanner.source[this.scanner.index];
	            if (ch === '{' || ch === '<') {
	                break;
	            }
	            ++this.scanner.index;
	            text += ch;
	            if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                ++this.scanner.lineNumber;
	                if (ch === '\r' && this.scanner.source[this.scanner.index] === '\n') {
	                    ++this.scanner.index;
	                }
	                this.scanner.lineStart = this.scanner.index;
	            }
	        }
	        this.lastMarker.index = this.scanner.index;
	        this.lastMarker.line = this.scanner.lineNumber;
	        this.lastMarker.column = this.scanner.index - this.scanner.lineStart;
	        var token = {
	            type: 101 /* Text */,
	            value: text,
	            lineNumber: this.scanner.lineNumber,
	            lineStart: this.scanner.lineStart,
	            start: start,
	            end: this.scanner.index
	        };
	        if ((text.length > 0) && this.config.tokens) {
	            this.tokens.push(this.convertToken(token));
	        }
	        return token;
	    };
	    JSXParser.prototype.peekJSXToken = function () {
	        var state = this.scanner.saveState();
	        this.scanner.scanComments();
	        var next = this.lexJSX();
	        this.scanner.restoreState(state);
	        return next;
	    };
	    // Expect the next JSX token to match the specified punctuator.
	    // If not, an exception will be thrown.
	    JSXParser.prototype.expectJSX = function (value) {
	        var token = this.nextJSXToken();
	        if (token.type !== 7 /* Punctuator */ || token.value !== value) {
	            this.throwUnexpectedToken(token);
	        }
	    };
	    // Return true if the next JSX token matches the specified punctuator.
	    JSXParser.prototype.matchJSX = function (value) {
	        var next = this.peekJSXToken();
	        return next.type === 7 /* Punctuator */ && next.value === value;
	    };
	    JSXParser.prototype.parseJSXIdentifier = function () {
	        var node = this.createJSXNode();
	        var token = this.nextJSXToken();
	        if (token.type !== 100 /* Identifier */) {
	            this.throwUnexpectedToken(token);
	        }
	        return this.finalize(node, new JSXNode.JSXIdentifier(token.value));
	    };
	    JSXParser.prototype.parseJSXElementName = function () {
	        var node = this.createJSXNode();
	        var elementName = this.parseJSXIdentifier();
	        if (this.matchJSX(':')) {
	            var namespace = elementName;
	            this.expectJSX(':');
	            var name_1 = this.parseJSXIdentifier();
	            elementName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_1));
	        }
	        else if (this.matchJSX('.')) {
	            while (this.matchJSX('.')) {
	                var object = elementName;
	                this.expectJSX('.');
	                var property = this.parseJSXIdentifier();
	                elementName = this.finalize(node, new JSXNode.JSXMemberExpression(object, property));
	            }
	        }
	        return elementName;
	    };
	    JSXParser.prototype.parseJSXAttributeName = function () {
	        var node = this.createJSXNode();
	        var attributeName;
	        var identifier = this.parseJSXIdentifier();
	        if (this.matchJSX(':')) {
	            var namespace = identifier;
	            this.expectJSX(':');
	            var name_2 = this.parseJSXIdentifier();
	            attributeName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_2));
	        }
	        else {
	            attributeName = identifier;
	        }
	        return attributeName;
	    };
	    JSXParser.prototype.parseJSXStringLiteralAttribute = function () {
	        var node = this.createJSXNode();
	        var token = this.nextJSXToken();
	        if (token.type !== 8 /* StringLiteral */) {
	            this.throwUnexpectedToken(token);
	        }
	        var raw = this.getTokenRaw(token);
	        return this.finalize(node, new Node.Literal(token.value, raw));
	    };
	    JSXParser.prototype.parseJSXExpressionAttribute = function () {
	        var node = this.createJSXNode();
	        this.expectJSX('{');
	        this.finishJSX();
	        if (this.match('}')) {
	            this.tolerateError('JSX attributes must only be assigned a non-empty expression');
	        }
	        var expression = this.parseAssignmentExpression();
	        this.reenterJSX();
	        return this.finalize(node, new JSXNode.JSXExpressionContainer(expression));
	    };
	    JSXParser.prototype.parseJSXAttributeValue = function () {
	        return this.matchJSX('{') ? this.parseJSXExpressionAttribute() :
	            this.matchJSX('<') ? this.parseJSXElement() : this.parseJSXStringLiteralAttribute();
	    };
	    JSXParser.prototype.parseJSXNameValueAttribute = function () {
	        var node = this.createJSXNode();
	        var name = this.parseJSXAttributeName();
	        var value = null;
	        if (this.matchJSX('=')) {
	            this.expectJSX('=');
	            value = this.parseJSXAttributeValue();
	        }
	        return this.finalize(node, new JSXNode.JSXAttribute(name, value));
	    };
	    JSXParser.prototype.parseJSXSpreadAttribute = function () {
	        var node = this.createJSXNode();
	        this.expectJSX('{');
	        this.expectJSX('...');
	        this.finishJSX();
	        var argument = this.parseAssignmentExpression();
	        this.reenterJSX();
	        return this.finalize(node, new JSXNode.JSXSpreadAttribute(argument));
	    };
	    JSXParser.prototype.parseJSXAttributes = function () {
	        var attributes = [];
	        while (!this.matchJSX('/') && !this.matchJSX('>')) {
	            var attribute = this.matchJSX('{') ? this.parseJSXSpreadAttribute() :
	                this.parseJSXNameValueAttribute();
	            attributes.push(attribute);
	        }
	        return attributes;
	    };
	    JSXParser.prototype.parseJSXOpeningElement = function () {
	        var node = this.createJSXNode();
	        this.expectJSX('<');
	        var name = this.parseJSXElementName();
	        var attributes = this.parseJSXAttributes();
	        var selfClosing = this.matchJSX('/');
	        if (selfClosing) {
	            this.expectJSX('/');
	        }
	        this.expectJSX('>');
	        return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes));
	    };
	    JSXParser.prototype.parseJSXBoundaryElement = function () {
	        var node = this.createJSXNode();
	        this.expectJSX('<');
	        if (this.matchJSX('/')) {
	            this.expectJSX('/');
	            var name_3 = this.parseJSXElementName();
	            this.expectJSX('>');
	            return this.finalize(node, new JSXNode.JSXClosingElement(name_3));
	        }
	        var name = this.parseJSXElementName();
	        var attributes = this.parseJSXAttributes();
	        var selfClosing = this.matchJSX('/');
	        if (selfClosing) {
	            this.expectJSX('/');
	        }
	        this.expectJSX('>');
	        return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes));
	    };
	    JSXParser.prototype.parseJSXEmptyExpression = function () {
	        var node = this.createJSXChildNode();
	        this.collectComments();
	        this.lastMarker.index = this.scanner.index;
	        this.lastMarker.line = this.scanner.lineNumber;
	        this.lastMarker.column = this.scanner.index - this.scanner.lineStart;
	        return this.finalize(node, new JSXNode.JSXEmptyExpression());
	    };
	    JSXParser.prototype.parseJSXExpressionContainer = function () {
	        var node = this.createJSXNode();
	        this.expectJSX('{');
	        var expression;
	        if (this.matchJSX('}')) {
	            expression = this.parseJSXEmptyExpression();
	            this.expectJSX('}');
	        }
	        else {
	            this.finishJSX();
	            expression = this.parseAssignmentExpression();
	            this.reenterJSX();
	        }
	        return this.finalize(node, new JSXNode.JSXExpressionContainer(expression));
	    };
	    JSXParser.prototype.parseJSXChildren = function () {
	        var children = [];
	        while (!this.scanner.eof()) {
	            var node = this.createJSXChildNode();
	            var token = this.nextJSXText();
	            if (token.start < token.end) {
	                var raw = this.getTokenRaw(token);
	                var child = this.finalize(node, new JSXNode.JSXText(token.value, raw));
	                children.push(child);
	            }
	            if (this.scanner.source[this.scanner.index] === '{') {
	                var container = this.parseJSXExpressionContainer();
	                children.push(container);
	            }
	            else {
	                break;
	            }
	        }
	        return children;
	    };
	    JSXParser.prototype.parseComplexJSXElement = function (el) {
	        var stack = [];
	        while (!this.scanner.eof()) {
	            el.children = el.children.concat(this.parseJSXChildren());
	            var node = this.createJSXChildNode();
	            var element = this.parseJSXBoundaryElement();
	            if (element.type === jsx_syntax_1.JSXSyntax.JSXOpeningElement) {
	                var opening = element;
	                if (opening.selfClosing) {
	                    var child = this.finalize(node, new JSXNode.JSXElement(opening, [], null));
	                    el.children.push(child);
	                }
	                else {
	                    stack.push(el);
	                    el = { node: node, opening: opening, closing: null, children: [] };
	                }
	            }
	            if (element.type === jsx_syntax_1.JSXSyntax.JSXClosingElement) {
	                el.closing = element;
	                var open_1 = getQualifiedElementName(el.opening.name);
	                var close_1 = getQualifiedElementName(el.closing.name);
	                if (open_1 !== close_1) {
	                    this.tolerateError('Expected corresponding JSX closing tag for %0', open_1);
	                }
	                if (stack.length > 0) {
	                    var child = this.finalize(el.node, new JSXNode.JSXElement(el.opening, el.children, el.closing));
	                    el = stack[stack.length - 1];
	                    el.children.push(child);
	                    stack.pop();
	                }
	                else {
	                    break;
	                }
	            }
	        }
	        return el;
	    };
	    JSXParser.prototype.parseJSXElement = function () {
	        var node = this.createJSXNode();
	        var opening = this.parseJSXOpeningElement();
	        var children = [];
	        var closing = null;
	        if (!opening.selfClosing) {
	            var el = this.parseComplexJSXElement({ node: node, opening: opening, closing: closing, children: children });
	            children = el.children;
	            closing = el.closing;
	        }
	        return this.finalize(node, new JSXNode.JSXElement(opening, children, closing));
	    };
	    JSXParser.prototype.parseJSXRoot = function () {
	        // Pop the opening '<' added from the lookahead.
	        if (this.config.tokens) {
	            this.tokens.pop();
	        }
	        this.startJSX();
	        var element = this.parseJSXElement();
	        this.finishJSX();
	        return element;
	    };
	    JSXParser.prototype.isStartOfExpression = function () {
	        return _super.prototype.isStartOfExpression.call(this) || this.match('<');
	    };
	    return JSXParser;
	}(parser_1.Parser));
	exports.JSXParser = JSXParser;


/***/ },
/* 4 */
/***/ function(module, exports) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	// See also tools/generate-unicode-regex.js.
	var Regex = {
	    // Unicode v8.0.0 NonAsciiIdentifierStart:
	    NonAsciiIdentifierStart: /[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0-\u08B4\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0AF9\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58-\u0C5A\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D5F-\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2118-\u211D\u2124\u2126\u2128\u212A-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309B-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FD5\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA7AD\uA7B0-\uA7B7\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA8FD\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB65\uAB70-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDE80-\uDE9C\uDEA0-\uDED0\uDF00-\uDF1F\uDF30-\uDF4A\uDF50-\uDF75\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDCE0-\uDCF2\uDCF4\uDCF5\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00\uDE10-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE4\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48\uDC80-\uDCB2\uDCC0-\uDCF2]|\uD804[\uDC03-\uDC37\uDC83-\uDCAF\uDCD0-\uDCE8\uDD03-\uDD26\uDD50-\uDD72\uDD76\uDD83-\uDDB2\uDDC1-\uDDC4\uDDDA\uDDDC\uDE00-\uDE11\uDE13-\uDE2B\uDE80-\uDE86\uDE88\uDE8A-\uDE8D\uDE8F-\uDE9D\uDE9F-\uDEA8\uDEB0-\uDEDE\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3D\uDF50\uDF5D-\uDF61]|\uD805[\uDC80-\uDCAF\uDCC4\uDCC5\uDCC7\uDD80-\uDDAE\uDDD8-\uDDDB\uDE00-\uDE2F\uDE44\uDE80-\uDEAA\uDF00-\uDF19]|\uD806[\uDCA0-\uDCDF\uDCFF\uDEC0-\uDEF8]|\uD808[\uDC00-\uDF99]|\uD809[\uDC00-\uDC6E\uDC80-\uDD43]|[\uD80C\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD811[\uDC00-\uDE46]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDED0-\uDEED\uDF00-\uDF2F\uDF40-\uDF43\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDF00-\uDF44\uDF50\uDF93-\uDF9F]|\uD82C[\uDC00\uDC01]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB]|\uD83A[\uDC00-\uDCC4]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1]|\uD87E[\uDC00-\uDE1D]/,
	    // Unicode v8.0.0 NonAsciiIdentifierPart:
	    NonAsciiIdentifierPart: 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-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDDFD\uDE80-\uDE9C\uDEA0-\uDED0\uDEE0\uDF00-\uDF1F\uDF30-\uDF4A\uDF50-\uDF7A\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDCA0-\uDCA9\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDCE0-\uDCF2\uDCF4\uDCF5\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00-\uDE03\uDE05\uDE06\uDE0C-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE38-\uDE3A\uDE3F\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE6\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48\uDC80-\uDCB2\uDCC0-\uDCF2]|\uD804[\uDC00-\uDC46\uDC66-\uDC6F\uDC7F-\uDCBA\uDCD0-\uDCE8\uDCF0-\uDCF9\uDD00-\uDD34\uDD36-\uDD3F\uDD50-\uDD73\uDD76\uDD80-\uDDC4\uDDCA-\uDDCC\uDDD0-\uDDDA\uDDDC\uDE00-\uDE11\uDE13-\uDE37\uDE80-\uDE86\uDE88\uDE8A-\uDE8D\uDE8F-\uDE9D\uDE9F-\uDEA8\uDEB0-\uDEEA\uDEF0-\uDEF9\uDF00-\uDF03\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3C-\uDF44\uDF47\uDF48\uDF4B-\uDF4D\uDF50\uDF57\uDF5D-\uDF63\uDF66-\uDF6C\uDF70-\uDF74]|\uD805[\uDC80-\uDCC5\uDCC7\uDCD0-\uDCD9\uDD80-\uDDB5\uDDB8-\uDDC0\uDDD8-\uDDDD\uDE00-\uDE40\uDE44\uDE50-\uDE59\uDE80-\uDEB7\uDEC0-\uDEC9\uDF00-\uDF19\uDF1D-\uDF2B\uDF30-\uDF39]|\uD806[\uDCA0-\uDCE9\uDCFF\uDEC0-\uDEF8]|\uD808[\uDC00-\uDF99]|\uD809[\uDC00-\uDC6E\uDC80-\uDD43]|[\uD80C\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD811[\uDC00-\uDE46]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDE60-\uDE69\uDED0-\uDEED\uDEF0-\uDEF4\uDF00-\uDF36\uDF40-\uDF43\uDF50-\uDF59\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDF00-\uDF44\uDF50-\uDF7E\uDF8F-\uDF9F]|\uD82C[\uDC00\uDC01]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99\uDC9D\uDC9E]|\uD834[\uDD65-\uDD69\uDD6D-\uDD72\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB\uDFCE-\uDFFF]|\uD836[\uDE00-\uDE36\uDE3B-\uDE6C\uDE75\uDE84\uDE9B-\uDE9F\uDEA1-\uDEAF]|\uD83A[\uDC00-\uDCC4\uDCD0-\uDCD6]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1]|\uD87E[\uDC00-\uDE1D]|\uDB40[\uDD00-\uDDEF]/
	};
	exports.Character = {
	    /* tslint:disable:no-bitwise */
	    fromCodePoint: function (cp) {
	        return (cp < 0x10000) ? String.fromCharCode(cp) :
	            String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) +
	                String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023));
	    },
	    // https://tc39.github.io/ecma262/#sec-white-space
	    isWhiteSpace: function (cp) {
	        return (cp === 0x20) || (cp === 0x09) || (cp === 0x0B) || (cp === 0x0C) || (cp === 0xA0) ||
	            (cp >= 0x1680 && [0x1680, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(cp) >= 0);
	    },
	    // https://tc39.github.io/ecma262/#sec-line-terminators
	    isLineTerminator: function (cp) {
	        return (cp === 0x0A) || (cp === 0x0D) || (cp === 0x2028) || (cp === 0x2029);
	    },
	    // https://tc39.github.io/ecma262/#sec-names-and-keywords
	    isIdentifierStart: function (cp) {
	        return (cp === 0x24) || (cp === 0x5F) ||
	            (cp >= 0x41 && cp <= 0x5A) ||
	            (cp >= 0x61 && cp <= 0x7A) ||
	            (cp === 0x5C) ||
	            ((cp >= 0x80) && Regex.NonAsciiIdentifierStart.test(exports.Character.fromCodePoint(cp)));
	    },
	    isIdentifierPart: function (cp) {
	        return (cp === 0x24) || (cp === 0x5F) ||
	            (cp >= 0x41 && cp <= 0x5A) ||
	            (cp >= 0x61 && cp <= 0x7A) ||
	            (cp >= 0x30 && cp <= 0x39) ||
	            (cp === 0x5C) ||
	            ((cp >= 0x80) && Regex.NonAsciiIdentifierPart.test(exports.Character.fromCodePoint(cp)));
	    },
	    // https://tc39.github.io/ecma262/#sec-literals-numeric-literals
	    isDecimalDigit: function (cp) {
	        return (cp >= 0x30 && cp <= 0x39); // 0..9
	    },
	    isHexDigit: function (cp) {
	        return (cp >= 0x30 && cp <= 0x39) ||
	            (cp >= 0x41 && cp <= 0x46) ||
	            (cp >= 0x61 && cp <= 0x66); // a..f
	    },
	    isOctalDigit: function (cp) {
	        return (cp >= 0x30 && cp <= 0x37); // 0..7
	    }
	};


/***/ },
/* 5 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var jsx_syntax_1 = __webpack_require__(6);
	/* tslint:disable:max-classes-per-file */
	var JSXClosingElement = (function () {
	    function JSXClosingElement(name) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXClosingElement;
	        this.name = name;
	    }
	    return JSXClosingElement;
	}());
	exports.JSXClosingElement = JSXClosingElement;
	var JSXElement = (function () {
	    function JSXElement(openingElement, children, closingElement) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXElement;
	        this.openingElement = openingElement;
	        this.children = children;
	        this.closingElement = closingElement;
	    }
	    return JSXElement;
	}());
	exports.JSXElement = JSXElement;
	var JSXEmptyExpression = (function () {
	    function JSXEmptyExpression() {
	        this.type = jsx_syntax_1.JSXSyntax.JSXEmptyExpression;
	    }
	    return JSXEmptyExpression;
	}());
	exports.JSXEmptyExpression = JSXEmptyExpression;
	var JSXExpressionContainer = (function () {
	    function JSXExpressionContainer(expression) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXExpressionContainer;
	        this.expression = expression;
	    }
	    return JSXExpressionContainer;
	}());
	exports.JSXExpressionContainer = JSXExpressionContainer;
	var JSXIdentifier = (function () {
	    function JSXIdentifier(name) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXIdentifier;
	        this.name = name;
	    }
	    return JSXIdentifier;
	}());
	exports.JSXIdentifier = JSXIdentifier;
	var JSXMemberExpression = (function () {
	    function JSXMemberExpression(object, property) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXMemberExpression;
	        this.object = object;
	        this.property = property;
	    }
	    return JSXMemberExpression;
	}());
	exports.JSXMemberExpression = JSXMemberExpression;
	var JSXAttribute = (function () {
	    function JSXAttribute(name, value) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXAttribute;
	        this.name = name;
	        this.value = value;
	    }
	    return JSXAttribute;
	}());
	exports.JSXAttribute = JSXAttribute;
	var JSXNamespacedName = (function () {
	    function JSXNamespacedName(namespace, name) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXNamespacedName;
	        this.namespace = namespace;
	        this.name = name;
	    }
	    return JSXNamespacedName;
	}());
	exports.JSXNamespacedName = JSXNamespacedName;
	var JSXOpeningElement = (function () {
	    function JSXOpeningElement(name, selfClosing, attributes) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXOpeningElement;
	        this.name = name;
	        this.selfClosing = selfClosing;
	        this.attributes = attributes;
	    }
	    return JSXOpeningElement;
	}());
	exports.JSXOpeningElement = JSXOpeningElement;
	var JSXSpreadAttribute = (function () {
	    function JSXSpreadAttribute(argument) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXSpreadAttribute;
	        this.argument = argument;
	    }
	    return JSXSpreadAttribute;
	}());
	exports.JSXSpreadAttribute = JSXSpreadAttribute;
	var JSXText = (function () {
	    function JSXText(value, raw) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXText;
	        this.value = value;
	        this.raw = raw;
	    }
	    return JSXText;
	}());
	exports.JSXText = JSXText;


/***/ },
/* 6 */
/***/ function(module, exports) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	exports.JSXSyntax = {
	    JSXAttribute: 'JSXAttribute',
	    JSXClosingElement: 'JSXClosingElement',
	    JSXElement: 'JSXElement',
	    JSXEmptyExpression: 'JSXEmptyExpression',
	    JSXExpressionContainer: 'JSXExpressionContainer',
	    JSXIdentifier: 'JSXIdentifier',
	    JSXMemberExpression: 'JSXMemberExpression',
	    JSXNamespacedName: 'JSXNamespacedName',
	    JSXOpeningElement: 'JSXOpeningElement',
	    JSXSpreadAttribute: 'JSXSpreadAttribute',
	    JSXText: 'JSXText'
	};


/***/ },
/* 7 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var syntax_1 = __webpack_require__(2);
	/* tslint:disable:max-classes-per-file */
	var ArrayExpression = (function () {
	    function ArrayExpression(elements) {
	        this.type = syntax_1.Syntax.ArrayExpression;
	        this.elements = elements;
	    }
	    return ArrayExpression;
	}());
	exports.ArrayExpression = ArrayExpression;
	var ArrayPattern = (function () {
	    function ArrayPattern(elements) {
	        this.type = syntax_1.Syntax.ArrayPattern;
	        this.elements = elements;
	    }
	    return ArrayPattern;
	}());
	exports.ArrayPattern = ArrayPattern;
	var ArrowFunctionExpression = (function () {
	    function ArrowFunctionExpression(params, body, expression) {
	        this.type = syntax_1.Syntax.ArrowFunctionExpression;
	        this.id = null;
	        this.params = params;
	        this.body = body;
	        this.generator = false;
	        this.expression = expression;
	        this.async = false;
	    }
	    return ArrowFunctionExpression;
	}());
	exports.ArrowFunctionExpression = ArrowFunctionExpression;
	var AssignmentExpression = (function () {
	    function AssignmentExpression(operator, left, right) {
	        this.type = syntax_1.Syntax.AssignmentExpression;
	        this.operator = operator;
	        this.left = left;
	        this.right = right;
	    }
	    return AssignmentExpression;
	}());
	exports.AssignmentExpression = AssignmentExpression;
	var AssignmentPattern = (function () {
	    function AssignmentPattern(left, right) {
	        this.type = syntax_1.Syntax.AssignmentPattern;
	        this.left = left;
	        this.right = right;
	    }
	    return AssignmentPattern;
	}());
	exports.AssignmentPattern = AssignmentPattern;
	var AsyncArrowFunctionExpression = (function () {
	    function AsyncArrowFunctionExpression(params, body, expression) {
	        this.type = syntax_1.Syntax.ArrowFunctionExpression;
	        this.id = null;
	        this.params = params;
	        this.body = body;
	        this.generator = false;
	        this.expression = expression;
	        this.async = true;
	    }
	    return AsyncArrowFunctionExpression;
	}());
	exports.AsyncArrowFunctionExpression = AsyncArrowFunctionExpression;
	var AsyncFunctionDeclaration = (function () {
	    function AsyncFunctionDeclaration(id, params, body) {
	        this.type = syntax_1.Syntax.FunctionDeclaration;
	        this.id = id;
	        this.params = params;
	        this.body = body;
	        this.generator = false;
	        this.expression = false;
	        this.async = true;
	    }
	    return AsyncFunctionDeclaration;
	}());
	exports.AsyncFunctionDeclaration = AsyncFunctionDeclaration;
	var AsyncFunctionExpression = (function () {
	    function AsyncFunctionExpression(id, params, body) {
	        this.type = syntax_1.Syntax.FunctionExpression;
	        this.id = id;
	        this.params = params;
	        this.body = body;
	        this.generator = false;
	        this.expression = false;
	        this.async = true;
	    }
	    return AsyncFunctionExpression;
	}());
	exports.AsyncFunctionExpression = AsyncFunctionExpression;
	var AwaitExpression = (function () {
	    function AwaitExpression(argument) {
	        this.type = syntax_1.Syntax.AwaitExpression;
	        this.argument = argument;
	    }
	    return AwaitExpression;
	}());
	exports.AwaitExpression = AwaitExpression;
	var BinaryExpression = (function () {
	    function BinaryExpression(operator, left, right) {
	        var logical = (operator === '||' || operator === '&&');
	        this.type = logical ? syntax_1.Syntax.LogicalExpression : syntax_1.Syntax.BinaryExpression;
	        this.operator = operator;
	        this.left = left;
	        this.right = right;
	    }
	    return BinaryExpression;
	}());
	exports.BinaryExpression = BinaryExpression;
	var BlockStatement = (function () {
	    function BlockStatement(body) {
	        this.type = syntax_1.Syntax.BlockStatement;
	        this.body = body;
	    }
	    return BlockStatement;
	}());
	exports.BlockStatement = BlockStatement;
	var BreakStatement = (function () {
	    function BreakStatement(label) {
	        this.type = syntax_1.Syntax.BreakStatement;
	        this.label = label;
	    }
	    return BreakStatement;
	}());
	exports.BreakStatement = BreakStatement;
	var CallExpression = (function () {
	    function CallExpression(callee, args) {
	        this.type = syntax_1.Syntax.CallExpression;
	        this.callee = callee;
	        this.arguments = args;
	    }
	    return CallExpression;
	}());
	exports.CallExpression = CallExpression;
	var CatchClause = (function () {
	    function CatchClause(param, body) {
	        this.type = syntax_1.Syntax.CatchClause;
	        this.param = param;
	        this.body = body;
	    }
	    return CatchClause;
	}());
	exports.CatchClause = CatchClause;
	var ClassBody = (function () {
	    function ClassBody(body) {
	        this.type = syntax_1.Syntax.ClassBody;
	        this.body = body;
	    }
	    return ClassBody;
	}());
	exports.ClassBody = ClassBody;
	var ClassDeclaration = (function () {
	    function ClassDeclaration(id, superClass, body) {
	        this.type = syntax_1.Syntax.ClassDeclaration;
	        this.id = id;
	        this.superClass = superClass;
	        this.body = body;
	    }
	    return ClassDeclaration;
	}());
	exports.ClassDeclaration = ClassDeclaration;
	var ClassExpression = (function () {
	    function ClassExpression(id, superClass, body) {
	        this.type = syntax_1.Syntax.ClassExpression;
	        this.id = id;
	        this.superClass = superClass;
	        this.body = body;
	    }
	    return ClassExpression;
	}());
	exports.ClassExpression = ClassExpression;
	var ComputedMemberExpression = (function () {
	    function ComputedMemberExpression(object, property) {
	        this.type = syntax_1.Syntax.MemberExpression;
	        this.computed = true;
	        this.object = object;
	        this.property = property;
	    }
	    return ComputedMemberExpression;
	}());
	exports.ComputedMemberExpression = ComputedMemberExpression;
	var ConditionalExpression = (function () {
	    function ConditionalExpression(test, consequent, alternate) {
	        this.type = syntax_1.Syntax.ConditionalExpression;
	        this.test = test;
	        this.consequent = consequent;
	        this.alternate = alternate;
	    }
	    return ConditionalExpression;
	}());
	exports.ConditionalExpression = ConditionalExpression;
	var ContinueStatement = (function () {
	    function ContinueStatement(label) {
	        this.type = syntax_1.Syntax.ContinueStatement;
	        this.label = label;
	    }
	    return ContinueStatement;
	}());
	exports.ContinueStatement = ContinueStatement;
	var DebuggerStatement = (function () {
	    function DebuggerStatement() {
	        this.type = syntax_1.Syntax.DebuggerStatement;
	    }
	    return DebuggerStatement;
	}());
	exports.DebuggerStatement = DebuggerStatement;
	var Directive = (function () {
	    function Directive(expression, directive) {
	        this.type = syntax_1.Syntax.ExpressionStatement;
	        this.expression = expression;
	        this.directive = directive;
	    }
	    return Directive;
	}());
	exports.Directive = Directive;
	var DoWhileStatement = (function () {
	    function DoWhileStatement(body, test) {
	        this.type = syntax_1.Syntax.DoWhileStatement;
	        this.body = body;
	        this.test = test;
	    }
	    return DoWhileStatement;
	}());
	exports.DoWhileStatement = DoWhileStatement;
	var EmptyStatement = (function () {
	    function EmptyStatement() {
	        this.type = syntax_1.Syntax.EmptyStatement;
	    }
	    return EmptyStatement;
	}());
	exports.EmptyStatement = EmptyStatement;
	var ExportAllDeclaration = (function () {
	    function ExportAllDeclaration(source) {
	        this.type = syntax_1.Syntax.ExportAllDeclaration;
	        this.source = source;
	    }
	    return ExportAllDeclaration;
	}());
	exports.ExportAllDeclaration = ExportAllDeclaration;
	var ExportDefaultDeclaration = (function () {
	    function ExportDefaultDeclaration(declaration) {
	        this.type = syntax_1.Syntax.ExportDefaultDeclaration;
	        this.declaration = declaration;
	    }
	    return ExportDefaultDeclaration;
	}());
	exports.ExportDefaultDeclaration = ExportDefaultDeclaration;
	var ExportNamedDeclaration = (function () {
	    function ExportNamedDeclaration(declaration, specifiers, source) {
	        this.type = syntax_1.Syntax.ExportNamedDeclaration;
	        this.declaration = declaration;
	        this.specifiers = specifiers;
	        this.source = source;
	    }
	    return ExportNamedDeclaration;
	}());
	exports.ExportNamedDeclaration = ExportNamedDeclaration;
	var ExportSpecifier = (function () {
	    function ExportSpecifier(local, exported) {
	        this.type = syntax_1.Syntax.ExportSpecifier;
	        this.exported = exported;
	        this.local = local;
	    }
	    return ExportSpecifier;
	}());
	exports.ExportSpecifier = ExportSpecifier;
	var ExpressionStatement = (function () {
	    function ExpressionStatement(expression) {
	        this.type = syntax_1.Syntax.ExpressionStatement;
	        this.expression = expression;
	    }
	    return ExpressionStatement;
	}());
	exports.ExpressionStatement = ExpressionStatement;
	var ForInStatement = (function () {
	    function ForInStatement(left, right, body) {
	        this.type = syntax_1.Syntax.ForInStatement;
	        this.left = left;
	        this.right = right;
	        this.body = body;
	        this.each = false;
	    }
	    return ForInStatement;
	}());
	exports.ForInStatement = ForInStatement;
	var ForOfStatement = (function () {
	    function ForOfStatement(left, right, body) {
	        this.type = syntax_1.Syntax.ForOfStatement;
	        this.left = left;
	        this.right = right;
	        this.body = body;
	    }
	    return ForOfStatement;
	}());
	exports.ForOfStatement = ForOfStatement;
	var ForStatement = (function () {
	    function ForStatement(init, test, update, body) {
	        this.type = syntax_1.Syntax.ForStatement;
	        this.init = init;
	        this.test = test;
	        this.update = update;
	        this.body = body;
	    }
	    return ForStatement;
	}());
	exports.ForStatement = ForStatement;
	var FunctionDeclaration = (function () {
	    function FunctionDeclaration(id, params, body, generator) {
	        this.type = syntax_1.Syntax.FunctionDeclaration;
	        this.id = id;
	        this.params = params;
	        this.body = body;
	        this.generator = generator;
	        this.expression = false;
	        this.async = false;
	    }
	    return FunctionDeclaration;
	}());
	exports.FunctionDeclaration = FunctionDeclaration;
	var FunctionExpression = (function () {
	    function FunctionExpression(id, params, body, generator) {
	        this.type = syntax_1.Syntax.FunctionExpression;
	        this.id = id;
	        this.params = params;
	        this.body = body;
	        this.generator = generator;
	        this.expression = false;
	        this.async = false;
	    }
	    return FunctionExpression;
	}());
	exports.FunctionExpression = FunctionExpression;
	var Identifier = (function () {
	    function Identifier(name) {
	        this.type = syntax_1.Syntax.Identifier;
	        this.name = name;
	    }
	    return Identifier;
	}());
	exports.Identifier = Identifier;
	var IfStatement = (function () {
	    function IfStatement(test, consequent, alternate) {
	        this.type = syntax_1.Syntax.IfStatement;
	        this.test = test;
	        this.consequent = consequent;
	        this.alternate = alternate;
	    }
	    return IfStatement;
	}());
	exports.IfStatement = IfStatement;
	var ImportDeclaration = (function () {
	    function ImportDeclaration(specifiers, source) {
	        this.type = syntax_1.Syntax.ImportDeclaration;
	        this.specifiers = specifiers;
	        this.source = source;
	    }
	    return ImportDeclaration;
	}());
	exports.ImportDeclaration = ImportDeclaration;
	var ImportDefaultSpecifier = (function () {
	    function ImportDefaultSpecifier(local) {
	        this.type = syntax_1.Syntax.ImportDefaultSpecifier;
	        this.local = local;
	    }
	    return ImportDefaultSpecifier;
	}());
	exports.ImportDefaultSpecifier = ImportDefaultSpecifier;
	var ImportNamespaceSpecifier = (function () {
	    function ImportNamespaceSpecifier(local) {
	        this.type = syntax_1.Syntax.ImportNamespaceSpecifier;
	        this.local = local;
	    }
	    return ImportNamespaceSpecifier;
	}());
	exports.ImportNamespaceSpecifier = ImportNamespaceSpecifier;
	var ImportSpecifier = (function () {
	    function ImportSpecifier(local, imported) {
	        this.type = syntax_1.Syntax.ImportSpecifier;
	        this.local = local;
	        this.imported = imported;
	    }
	    return ImportSpecifier;
	}());
	exports.ImportSpecifier = ImportSpecifier;
	var LabeledStatement = (function () {
	    function LabeledStatement(label, body) {
	        this.type = syntax_1.Syntax.LabeledStatement;
	        this.label = label;
	        this.body = body;
	    }
	    return LabeledStatement;
	}());
	exports.LabeledStatement = LabeledStatement;
	var Literal = (function () {
	    function Literal(value, raw) {
	        this.type = syntax_1.Syntax.Literal;
	        this.value = value;
	        this.raw = raw;
	    }
	    return Literal;
	}());
	exports.Literal = Literal;
	var MetaProperty = (function () {
	    function MetaProperty(meta, property) {
	        this.type = syntax_1.Syntax.MetaProperty;
	        this.meta = meta;
	        this.property = property;
	    }
	    return MetaProperty;
	}());
	exports.MetaProperty = MetaProperty;
	var MethodDefinition = (function () {
	    function MethodDefinition(key, computed, value, kind, isStatic) {
	        this.type = syntax_1.Syntax.MethodDefinition;
	        this.key = key;
	        this.computed = computed;
	        this.value = value;
	        this.kind = kind;
	        this.static = isStatic;
	    }
	    return MethodDefinition;
	}());
	exports.MethodDefinition = MethodDefinition;
	var Module = (function () {
	    function Module(body) {
	        this.type = syntax_1.Syntax.Program;
	        this.body = body;
	        this.sourceType = 'module';
	    }
	    return Module;
	}());
	exports.Module = Module;
	var NewExpression = (function () {
	    function NewExpression(callee, args) {
	        this.type = syntax_1.Syntax.NewExpression;
	        this.callee = callee;
	        this.arguments = args;
	    }
	    return NewExpression;
	}());
	exports.NewExpression = NewExpression;
	var ObjectExpression = (function () {
	    function ObjectExpression(properties) {
	        this.type = syntax_1.Syntax.ObjectExpression;
	        this.properties = properties;
	    }
	    return ObjectExpression;
	}());
	exports.ObjectExpression = ObjectExpression;
	var ObjectPattern = (function () {
	    function ObjectPattern(properties) {
	        this.type = syntax_1.Syntax.ObjectPattern;
	        this.properties = properties;
	    }
	    return ObjectPattern;
	}());
	exports.ObjectPattern = ObjectPattern;
	var Property = (function () {
	    function Property(kind, key, computed, value, method, shorthand) {
	        this.type = syntax_1.Syntax.Property;
	        this.key = key;
	        this.computed = computed;
	        this.value = value;
	        this.kind = kind;
	        this.method = method;
	        this.shorthand = shorthand;
	    }
	    return Property;
	}());
	exports.Property = Property;
	var RegexLiteral = (function () {
	    function RegexLiteral(value, raw, pattern, flags) {
	        this.type = syntax_1.Syntax.Literal;
	        this.value = value;
	        this.raw = raw;
	        this.regex = { pattern: pattern, flags: flags };
	    }
	    return RegexLiteral;
	}());
	exports.RegexLiteral = RegexLiteral;
	var RestElement = (function () {
	    function RestElement(argument) {
	        this.type = syntax_1.Syntax.RestElement;
	        this.argument = argument;
	    }
	    return RestElement;
	}());
	exports.RestElement = RestElement;
	var ReturnStatement = (function () {
	    function ReturnStatement(argument) {
	        this.type = syntax_1.Syntax.ReturnStatement;
	        this.argument = argument;
	    }
	    return ReturnStatement;
	}());
	exports.ReturnStatement = ReturnStatement;
	var Script = (function () {
	    function Script(body) {
	        this.type = syntax_1.Syntax.Program;
	        this.body = body;
	        this.sourceType = 'script';
	    }
	    return Script;
	}());
	exports.Script = Script;
	var SequenceExpression = (function () {
	    function SequenceExpression(expressions) {
	        this.type = syntax_1.Syntax.SequenceExpression;
	        this.expressions = expressions;
	    }
	    return SequenceExpression;
	}());
	exports.SequenceExpression = SequenceExpression;
	var SpreadElement = (function () {
	    function SpreadElement(argument) {
	        this.type = syntax_1.Syntax.SpreadElement;
	        this.argument = argument;
	    }
	    return SpreadElement;
	}());
	exports.SpreadElement = SpreadElement;
	var StaticMemberExpression = (function () {
	    function StaticMemberExpression(object, property) {
	        this.type = syntax_1.Syntax.MemberExpression;
	        this.computed = false;
	        this.object = object;
	        this.property = property;
	    }
	    return StaticMemberExpression;
	}());
	exports.StaticMemberExpression = StaticMemberExpression;
	var Super = (function () {
	    function Super() {
	        this.type = syntax_1.Syntax.Super;
	    }
	    return Super;
	}());
	exports.Super = Super;
	var SwitchCase = (function () {
	    function SwitchCase(test, consequent) {
	        this.type = syntax_1.Syntax.SwitchCase;
	        this.test = test;
	        this.consequent = consequent;
	    }
	    return SwitchCase;
	}());
	exports.SwitchCase = SwitchCase;
	var SwitchStatement = (function () {
	    function SwitchStatement(discriminant, cases) {
	        this.type = syntax_1.Syntax.SwitchStatement;
	        this.discriminant = discriminant;
	        this.cases = cases;
	    }
	    return SwitchStatement;
	}());
	exports.SwitchStatement = SwitchStatement;
	var TaggedTemplateExpression = (function () {
	    function TaggedTemplateExpression(tag, quasi) {
	        this.type = syntax_1.Syntax.TaggedTemplateExpression;
	        this.tag = tag;
	        this.quasi = quasi;
	    }
	    return TaggedTemplateExpression;
	}());
	exports.TaggedTemplateExpression = TaggedTemplateExpression;
	var TemplateElement = (function () {
	    function TemplateElement(value, tail) {
	        this.type = syntax_1.Syntax.TemplateElement;
	        this.value = value;
	        this.tail = tail;
	    }
	    return TemplateElement;
	}());
	exports.TemplateElement = TemplateElement;
	var TemplateLiteral = (function () {
	    function TemplateLiteral(quasis, expressions) {
	        this.type = syntax_1.Syntax.TemplateLiteral;
	        this.quasis = quasis;
	        this.expressions = expressions;
	    }
	    return TemplateLiteral;
	}());
	exports.TemplateLiteral = TemplateLiteral;
	var ThisExpression = (function () {
	    function ThisExpression() {
	        this.type = syntax_1.Syntax.ThisExpression;
	    }
	    return ThisExpression;
	}());
	exports.ThisExpression = ThisExpression;
	var ThrowStatement = (function () {
	    function ThrowStatement(argument) {
	        this.type = syntax_1.Syntax.ThrowStatement;
	        this.argument = argument;
	    }
	    return ThrowStatement;
	}());
	exports.ThrowStatement = ThrowStatement;
	var TryStatement = (function () {
	    function TryStatement(block, handler, finalizer) {
	        this.type = syntax_1.Syntax.TryStatement;
	        this.block = block;
	        this.handler = handler;
	        this.finalizer = finalizer;
	    }
	    return TryStatement;
	}());
	exports.TryStatement = TryStatement;
	var UnaryExpression = (function () {
	    function UnaryExpression(operator, argument) {
	        this.type = syntax_1.Syntax.UnaryExpression;
	        this.operator = operator;
	        this.argument = argument;
	        this.prefix = true;
	    }
	    return UnaryExpression;
	}());
	exports.UnaryExpression = UnaryExpression;
	var UpdateExpression = (function () {
	    function UpdateExpression(operator, argument, prefix) {
	        this.type = syntax_1.Syntax.UpdateExpression;
	        this.operator = operator;
	        this.argument = argument;
	        this.prefix = prefix;
	    }
	    return UpdateExpression;
	}());
	exports.UpdateExpression = UpdateExpression;
	var VariableDeclaration = (function () {
	    function VariableDeclaration(declarations, kind) {
	        this.type = syntax_1.Syntax.VariableDeclaration;
	        this.declarations = declarations;
	        this.kind = kind;
	    }
	    return VariableDeclaration;
	}());
	exports.VariableDeclaration = VariableDeclaration;
	var VariableDeclarator = (function () {
	    function VariableDeclarator(id, init) {
	        this.type = syntax_1.Syntax.VariableDeclarator;
	        this.id = id;
	        this.init = init;
	    }
	    return VariableDeclarator;
	}());
	exports.VariableDeclarator = VariableDeclarator;
	var WhileStatement = (function () {
	    function WhileStatement(test, body) {
	        this.type = syntax_1.Syntax.WhileStatement;
	        this.test = test;
	        this.body = body;
	    }
	    return WhileStatement;
	}());
	exports.WhileStatement = WhileStatement;
	var WithStatement = (function () {
	    function WithStatement(object, body) {
	        this.type = syntax_1.Syntax.WithStatement;
	        this.object = object;
	        this.body = body;
	    }
	    return WithStatement;
	}());
	exports.WithStatement = WithStatement;
	var YieldExpression = (function () {
	    function YieldExpression(argument, delegate) {
	        this.type = syntax_1.Syntax.YieldExpression;
	        this.argument = argument;
	        this.delegate = delegate;
	    }
	    return YieldExpression;
	}());
	exports.YieldExpression = YieldExpression;


/***/ },
/* 8 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var assert_1 = __webpack_require__(9);
	var error_handler_1 = __webpack_require__(10);
	var messages_1 = __webpack_require__(11);
	var Node = __webpack_require__(7);
	var scanner_1 = __webpack_require__(12);
	var syntax_1 = __webpack_require__(2);
	var token_1 = __webpack_require__(13);
	var ArrowParameterPlaceHolder = 'ArrowParameterPlaceHolder';
	var Parser = (function () {
	    function Parser(code, options, delegate) {
	        if (options === void 0) { options = {}; }
	        this.config = {
	            range: (typeof options.range === 'boolean') && options.range,
	            loc: (typeof options.loc === 'boolean') && options.loc,
	            source: null,
	            tokens: (typeof options.tokens === 'boolean') && options.tokens,
	            comment: (typeof options.comment === 'boolean') && options.comment,
	            tolerant: (typeof options.tolerant === 'boolean') && options.tolerant
	        };
	        if (this.config.loc && options.source && options.source !== null) {
	            this.config.source = String(options.source);
	        }
	        this.delegate = delegate;
	        this.errorHandler = new error_handler_1.ErrorHandler();
	        this.errorHandler.tolerant = this.config.tolerant;
	        this.scanner = new scanner_1.Scanner(code, this.errorHandler);
	        this.scanner.trackComment = this.config.comment;
	        this.operatorPrecedence = {
	            ')': 0,
	            ';': 0,
	            ',': 0,
	            '=': 0,
	            ']': 0,
	            '||': 1,
	            '&&': 2,
	            '|': 3,
	            '^': 4,
	            '&': 5,
	            '==': 6,
	            '!=': 6,
	            '===': 6,
	            '!==': 6,
	            '<': 7,
	            '>': 7,
	            '<=': 7,
	            '>=': 7,
	            '<<': 8,
	            '>>': 8,
	            '>>>': 8,
	            '+': 9,
	            '-': 9,
	            '*': 11,
	            '/': 11,
	            '%': 11
	        };
	        this.lookahead = {
	            type: 2 /* EOF */,
	            value: '',
	            lineNumber: this.scanner.lineNumber,
	            lineStart: 0,
	            start: 0,
	            end: 0
	        };
	        this.hasLineTerminator = false;
	        this.context = {
	            isModule: false,
	            await: false,
	            allowIn: true,
	            allowStrictDirective: true,
	            allowYield: true,
	            firstCoverInitializedNameError: null,
	            isAssignmentTarget: false,
	            isBindingElement: false,
	            inFunctionBody: false,
	            inIteration: false,
	            inSwitch: false,
	            labelSet: {},
	            strict: false
	        };
	        this.tokens = [];
	        this.startMarker = {
	            index: 0,
	            line: this.scanner.lineNumber,
	            column: 0
	        };
	        this.lastMarker = {
	            index: 0,
	            line: this.scanner.lineNumber,
	            column: 0
	        };
	        this.nextToken();
	        this.lastMarker = {
	            index: this.scanner.index,
	            line: this.scanner.lineNumber,
	            column: this.scanner.index - this.scanner.lineStart
	        };
	    }
	    Parser.prototype.throwError = function (messageFormat) {
	        var values = [];
	        for (var _i = 1; _i < arguments.length; _i++) {
	            values[_i - 1] = arguments[_i];
	        }
	        var args = Array.prototype.slice.call(arguments, 1);
	        var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) {
	            assert_1.assert(idx < args.length, 'Message reference must be in range');
	            return args[idx];
	        });
	        var index = this.lastMarker.index;
	        var line = this.lastMarker.line;
	        var column = this.lastMarker.column + 1;
	        throw this.errorHandler.createError(index, line, column, msg);
	    };
	    Parser.prototype.tolerateError = function (messageFormat) {
	        var values = [];
	        for (var _i = 1; _i < arguments.length; _i++) {
	            values[_i - 1] = arguments[_i];
	        }
	        var args = Array.prototype.slice.call(arguments, 1);
	        var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) {
	            assert_1.assert(idx < args.length, 'Message reference must be in range');
	            return args[idx];
	        });
	        var index = this.lastMarker.index;
	        var line = this.scanner.lineNumber;
	        var column = this.lastMarker.column + 1;
	        this.errorHandler.tolerateError(index, line, column, msg);
	    };
	    // Throw an exception because of the token.
	    Parser.prototype.unexpectedTokenError = function (token, message) {
	        var msg = message || messages_1.Messages.UnexpectedToken;
	        var value;
	        if (token) {
	            if (!message) {
	                msg = (token.type === 2 /* EOF */) ? messages_1.Messages.UnexpectedEOS :
	                    (token.type === 3 /* Identifier */) ? messages_1.Messages.UnexpectedIdentifier :
	                        (token.type === 6 /* NumericLiteral */) ? messages_1.Messages.UnexpectedNumber :
	                            (token.type === 8 /* StringLiteral */) ? messages_1.Messages.UnexpectedString :
	                                (token.type === 10 /* Template */) ? messages_1.Messages.UnexpectedTemplate :
	                                    messages_1.Messages.UnexpectedToken;
	                if (token.type === 4 /* Keyword */) {
	                    if (this.scanner.isFutureReservedWord(token.value)) {
	                        msg = messages_1.Messages.UnexpectedReserved;
	                    }
	                    else if (this.context.strict && this.scanner.isStrictModeReservedWord(token.value)) {
	                        msg = messages_1.Messages.StrictReservedWord;
	                    }
	                }
	            }
	            value = token.value;
	        }
	        else {
	            value = 'ILLEGAL';
	        }
	        msg = msg.replace('%0', value);
	        if (token && typeof token.lineNumber === 'number') {
	            var index = token.start;
	            var line = token.lineNumber;
	            var lastMarkerLineStart = this.lastMarker.index - this.lastMarker.column;
	            var column = token.start - lastMarkerLineStart + 1;
	            return this.errorHandler.createError(index, line, column, msg);
	        }
	        else {
	            var index = this.lastMarker.index;
	            var line = this.lastMarker.line;
	            var column = this.lastMarker.column + 1;
	            return this.errorHandler.createError(index, line, column, msg);
	        }
	    };
	    Parser.prototype.throwUnexpectedToken = function (token, message) {
	        throw this.unexpectedTokenError(token, message);
	    };
	    Parser.prototype.tolerateUnexpectedToken = function (token, message) {
	        this.errorHandler.tolerate(this.unexpectedTokenError(token, message));
	    };
	    Parser.prototype.collectComments = function () {
	        if (!this.config.comment) {
	            this.scanner.scanComments();
	        }
	        else {
	            var comments = this.scanner.scanComments();
	            if (comments.length > 0 && this.delegate) {
	                for (var i = 0; i < comments.length; ++i) {
	                    var e = comments[i];
	                    var node = void 0;
	                    node = {
	                        type: e.multiLine ? 'BlockComment' : 'LineComment',
	                        value: this.scanner.source.slice(e.slice[0], e.slice[1])
	                    };
	                    if (this.config.range) {
	                        node.range = e.range;
	                    }
	                    if (this.config.loc) {
	                        node.loc = e.loc;
	                    }
	                    var metadata = {
	                        start: {
	                            line: e.loc.start.line,
	                            column: e.loc.start.column,
	                            offset: e.range[0]
	                        },
	                        end: {
	                            line: e.loc.end.line,
	                            column: e.loc.end.column,
	                            offset: e.range[1]
	                        }
	                    };
	                    this.delegate(node, metadata);
	                }
	            }
	        }
	    };
	    // From internal representation to an external structure
	    Parser.prototype.getTokenRaw = function (token) {
	        return this.scanner.source.slice(token.start, token.end);
	    };
	    Parser.prototype.convertToken = function (token) {
	        var t = {
	            type: token_1.TokenName[token.type],
	            value: this.getTokenRaw(token)
	        };
	        if (this.config.range) {
	            t.range = [token.start, token.end];
	        }
	        if (this.config.loc) {
	            t.loc = {
	                start: {
	                    line: this.startMarker.line,
	                    column: this.startMarker.column
	                },
	                end: {
	                    line: this.scanner.lineNumber,
	                    column: this.scanner.index - this.scanner.lineStart
	                }
	            };
	        }
	        if (token.type === 9 /* RegularExpression */) {
	            var pattern = token.pattern;
	            var flags = token.flags;
	            t.regex = { pattern: pattern, flags: flags };
	        }
	        return t;
	    };
	    Parser.prototype.nextToken = function () {
	        var token = this.lookahead;
	        this.lastMarker.index = this.scanner.index;
	        this.lastMarker.line = this.scanner.lineNumber;
	        this.lastMarker.column = this.scanner.index - this.scanner.lineStart;
	        this.collectComments();
	        if (this.scanner.index !== this.startMarker.index) {
	            this.startMarker.index = this.scanner.index;
	            this.startMarker.line = this.scanner.lineNumber;
	            this.startMarker.column = this.scanner.index - this.scanner.lineStart;
	        }
	        var next = this.scanner.lex();
	        this.hasLineTerminator = (token.lineNumber !== next.lineNumber);
	        if (next && this.context.strict && next.type === 3 /* Identifier */) {
	            if (this.scanner.isStrictModeReservedWord(next.value)) {
	                next.type = 4 /* Keyword */;
	            }
	        }
	        this.lookahead = next;
	        if (this.config.tokens && next.type !== 2 /* EOF */) {
	            this.tokens.push(this.convertToken(next));
	        }
	        return token;
	    };
	    Parser.prototype.nextRegexToken = function () {
	        this.collectComments();
	        var token = this.scanner.scanRegExp();
	        if (this.config.tokens) {
	            // Pop the previous token, '/' or '/='
	            // This is added from the lookahead token.
	            this.tokens.pop();
	            this.tokens.push(this.convertToken(token));
	        }
	        // Prime the next lookahead.
	        this.lookahead = token;
	        this.nextToken();
	        return token;
	    };
	    Parser.prototype.createNode = function () {
	        return {
	            index: this.startMarker.index,
	            line: this.startMarker.line,
	            column: this.startMarker.column
	        };
	    };
	    Parser.prototype.startNode = function (token, lastLineStart) {
	        if (lastLineStart === void 0) { lastLineStart = 0; }
	        var column = token.start - token.lineStart;
	        var line = token.lineNumber;
	        if (column < 0) {
	            column += lastLineStart;
	            line--;
	        }
	        return {
	            index: token.start,
	            line: line,
	            column: column
	        };
	    };
	    Parser.prototype.finalize = function (marker, node) {
	        if (this.config.range) {
	            node.range = [marker.index, this.lastMarker.index];
	        }
	        if (this.config.loc) {
	            node.loc = {
	                start: {
	                    line: marker.line,
	                    column: marker.column,
	                },
	                end: {
	                    line: this.lastMarker.line,
	                    column: this.lastMarker.column
	                }
	            };
	            if (this.config.source) {
	                node.loc.source = this.config.source;
	            }
	        }
	        if (this.delegate) {
	            var metadata = {
	                start: {
	                    line: marker.line,
	                    column: marker.column,
	                    offset: marker.index
	                },
	                end: {
	                    line: this.lastMarker.line,
	                    column: this.lastMarker.column,
	                    offset: this.lastMarker.index
	                }
	            };
	            this.delegate(node, metadata);
	        }
	        return node;
	    };
	    // Expect the next token to match the specified punctuator.
	    // If not, an exception will be thrown.
	    Parser.prototype.expect = function (value) {
	        var token = this.nextToken();
	        if (token.type !== 7 /* Punctuator */ || token.value !== value) {
	            this.throwUnexpectedToken(token);
	        }
	    };
	    // Quietly expect a comma when in tolerant mode, otherwise delegates to expect().
	    Parser.prototype.expectCommaSeparator = function () {
	        if (this.config.tolerant) {
	            var token = this.lookahead;
	            if (token.type === 7 /* Punctuator */ && token.value === ',') {
	                this.nextToken();
	            }
	            else if (token.type === 7 /* Punctuator */ && token.value === ';') {
	                this.nextToken();
	                this.tolerateUnexpectedToken(token);
	            }
	            else {
	                this.tolerateUnexpectedToken(token, messages_1.Messages.UnexpectedToken);
	            }
	        }
	        else {
	            this.expect(',');
	        }
	    };
	    // Expect the next token to match the specified keyword.
	    // If not, an exception will be thrown.
	    Parser.prototype.expectKeyword = function (keyword) {
	        var token = this.nextToken();
	        if (token.type !== 4 /* Keyword */ || token.value !== keyword) {
	            this.throwUnexpectedToken(token);
	        }
	    };
	    // Return true if the next token matches the specified punctuator.
	    Parser.prototype.match = function (value) {
	        return this.lookahead.type === 7 /* Punctuator */ && this.lookahead.value === value;
	    };
	    // Return true if the next token matches the specified keyword
	    Parser.prototype.matchKeyword = function (keyword) {
	        return this.lookahead.type === 4 /* Keyword */ && this.lookahead.value === keyword;
	    };
	    // Return true if the next token matches the specified contextual keyword
	    // (where an identifier is sometimes a keyword depending on the context)
	    Parser.prototype.matchContextualKeyword = function (keyword) {
	        return this.lookahead.type === 3 /* Identifier */ && this.lookahead.value === keyword;
	    };
	    // Return true if the next token is an assignment operator
	    Parser.prototype.matchAssign = function () {
	        if (this.lookahead.type !== 7 /* Punctuator */) {
	            return false;
	        }
	        var op = this.lookahead.value;
	        return op === '=' ||
	            op === '*=' ||
	            op === '**=' ||
	            op === '/=' ||
	            op === '%=' ||
	            op === '+=' ||
	            op === '-=' ||
	            op === '<<=' ||
	            op === '>>=' ||
	            op === '>>>=' ||
	            op === '&=' ||
	            op === '^=' ||
	            op === '|=';
	    };
	    // Cover grammar support.
	    //
	    // When an assignment expression position starts with an left parenthesis, the determination of the type
	    // of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead)
	    // or the first comma. This situation also defers the determination of all the expressions nested in the pair.
	    //
	    // There are three productions that can be parsed in a parentheses pair that needs to be determined
	    // after the outermost pair is closed. They are:
	    //
	    //   1. AssignmentExpression
	    //   2. BindingElements
	    //   3. AssignmentTargets
	    //
	    // In order to avoid exponential backtracking, we use two flags to denote if the production can be
	    // binding element or assignment target.
	    //
	    // The three productions have the relationship:
	    //
	    //   BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression
	    //
	    // with a single exception that CoverInitializedName when used directly in an Expression, generates
	    // an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the
	    // first usage of CoverInitializedName and report it when we reached the end of the parentheses pair.
	    //
	    // isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not
	    // effect the current flags. This means the production the parser parses is only used as an expression. Therefore
	    // the CoverInitializedName check is conducted.
	    //
	    // inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates
	    // the flags outside of the parser. This means the production the parser parses is used as a part of a potential
	    // pattern. The CoverInitializedName check is deferred.
	    Parser.prototype.isolateCoverGrammar = function (parseFunction) {
	        var previousIsBindingElement = this.context.isBindingElement;
	        var previousIsAssignmentTarget = this.context.isAssignmentTarget;
	        var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError;
	        this.context.isBindingElement = true;
	        this.context.isAssignmentTarget = true;
	        this.context.firstCoverInitializedNameError = null;
	        var result = parseFunction.call(this);
	        if (this.context.firstCoverInitializedNameError !== null) {
	            this.throwUnexpectedToken(this.context.firstCoverInitializedNameError);
	        }
	        this.context.isBindingElement = previousIsBindingElement;
	        this.context.isAssignmentTarget = previousIsAssignmentTarget;
	        this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError;
	        return result;
	    };
	    Parser.prototype.inheritCoverGrammar = function (parseFunction) {
	        var previousIsBindingElement = this.context.isBindingElement;
	        var previousIsAssignmentTarget = this.context.isAssignmentTarget;
	        var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError;
	        this.context.isBindingElement = true;
	        this.context.isAssignmentTarget = true;
	        this.context.firstCoverInitializedNameError = null;
	        var result = parseFunction.call(this);
	        this.context.isBindingElement = this.context.isBindingElement && previousIsBindingElement;
	        this.context.isAssignmentTarget = this.context.isAssignmentTarget && previousIsAssignmentTarget;
	        this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError || this.context.firstCoverInitializedNameError;
	        return result;
	    };
	    Parser.prototype.consumeSemicolon = function () {
	        if (this.match(';')) {
	            this.nextToken();
	        }
	        else if (!this.hasLineTerminator) {
	            if (this.lookahead.type !== 2 /* EOF */ && !this.match('}')) {
	                this.throwUnexpectedToken(this.lookahead);
	            }
	            this.lastMarker.index = this.startMarker.index;
	            this.lastMarker.line = this.startMarker.line;
	            this.lastMarker.column = this.startMarker.column;
	        }
	    };
	    // https://tc39.github.io/ecma262/#sec-primary-expression
	    Parser.prototype.parsePrimaryExpression = function () {
	        var node = this.createNode();
	        var expr;
	        var token, raw;
	        switch (this.lookahead.type) {
	            case 3 /* Identifier */:
	                if ((this.context.isModule || this.context.await) && this.lookahead.value === 'await') {
	                    this.tolerateUnexpectedToken(this.lookahead);
	                }
	                expr = this.matchAsyncFunction() ? this.parseFunctionExpression() : this.finalize(node, new Node.Identifier(this.nextToken().value));
	                break;
	            case 6 /* NumericLiteral */:
	            case 8 /* StringLiteral */:
	                if (this.context.strict && this.lookahead.octal) {
	                    this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.StrictOctalLiteral);
	                }
	                this.context.isAssignmentTarget = false;
	                this.context.isBindingElement = false;
	                token = this.nextToken();
	                raw = this.getTokenRaw(token);
	                expr = this.finalize(node, new Node.Literal(token.value, raw));
	                break;
	            case 1 /* BooleanLiteral */:
	                this.context.isAssignmentTarget = false;
	                this.context.isBindingElement = false;
	                token = this.nextToken();
	                raw = this.getTokenRaw(token);
	                expr = this.finalize(node, new Node.Literal(token.value === 'true', raw));
	                break;
	            case 5 /* NullLiteral */:
	                this.context.isAssignmentTarget = false;
	                this.context.isBindingElement = false;
	                token = this.nextToken();
	                raw = this.getTokenRaw(token);
	                expr = this.finalize(node, new Node.Literal(null, raw));
	                break;
	            case 10 /* Template */:
	                expr = this.parseTemplateLiteral();
	                break;
	            case 7 /* Punctuator */:
	                switch (this.lookahead.value) {
	                    case '(':
	                        this.context.isBindingElement = false;
	                        expr = this.inheritCoverGrammar(this.parseGroupExpression);
	                        break;
	                    case '[':
	                        expr = this.inheritCoverGrammar(this.parseArrayInitializer);
	                        break;
	                    case '{':
	                        expr = this.inheritCoverGrammar(this.parseObjectInitializer);
	                        break;
	                    case '/':
	                    case '/=':
	                        this.context.isAssignmentTarget = false;
	                        this.context.isBindingElement = false;
	                        this.scanner.index = this.startMarker.index;
	                        token = this.nextRegexToken();
	                        raw = this.getTokenRaw(token);
	                        expr = this.finalize(node, new Node.RegexLiteral(token.regex, raw, token.pattern, token.flags));
	                        break;
	                    default:
	                        expr = this.throwUnexpectedToken(this.nextToken());
	                }
	                break;
	            case 4 /* Keyword */:
	                if (!this.context.strict && this.context.allowYield && this.matchKeyword('yield')) {
	                    expr = this.parseIdentifierName();
	                }
	                else if (!this.context.strict && this.matchKeyword('let')) {
	                    expr = this.finalize(node, new Node.Identifier(this.nextToken().value));
	                }
	                else {
	                    this.context.isAssignmentTarget = false;
	                    this.context.isBindingElement = false;
	                    if (this.matchKeyword('function')) {
	                        expr = this.parseFunctionExpression();
	                    }
	                    else if (this.matchKeyword('this')) {
	                        this.nextToken();
	                        expr = this.finalize(node, new Node.ThisExpression());
	                    }
	                    else if (this.matchKeyword('class')) {
	                        expr = this.parseClassExpression();
	                    }
	                    else {
	                        expr = this.throwUnexpectedToken(this.nextToken());
	                    }
	                }
	                break;
	            default:
	                expr = this.throwUnexpectedToken(this.nextToken());
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-array-initializer
	    Parser.prototype.parseSpreadElement = function () {
	        var node = this.createNode();
	        this.expect('...');
	        var arg = this.inheritCoverGrammar(this.parseAssignmentExpression);
	        return this.finalize(node, new Node.SpreadElement(arg));
	    };
	    Parser.prototype.parseArrayInitializer = function () {
	        var node = this.createNode();
	        var elements = [];
	        this.expect('[');
	        while (!this.match(']')) {
	            if (this.match(',')) {
	                this.nextToken();
	                elements.push(null);
	            }
	            else if (this.match('...')) {
	                var element = this.parseSpreadElement();
	                if (!this.match(']')) {
	                    this.context.isAssignmentTarget = false;
	                    this.context.isBindingElement = false;
	                    this.expect(',');
	                }
	                elements.push(element);
	            }
	            else {
	                elements.push(this.inheritCoverGrammar(this.parseAssignmentExpression));
	                if (!this.match(']')) {
	                    this.expect(',');
	                }
	            }
	        }
	        this.expect(']');
	        return this.finalize(node, new Node.ArrayExpression(elements));
	    };
	    // https://tc39.github.io/ecma262/#sec-object-initializer
	    Parser.prototype.parsePropertyMethod = function (params) {
	        this.context.isAssignmentTarget = false;
	        this.context.isBindingElement = false;
	        var previousStrict = this.context.strict;
	        var previousAllowStrictDirective = this.context.allowStrictDirective;
	        this.context.allowStrictDirective = params.simple;
	        var body = this.isolateCoverGrammar(this.parseFunctionSourceElements);
	        if (this.context.strict && params.firstRestricted) {
	            this.tolerateUnexpectedToken(params.firstRestricted, params.message);
	        }
	        if (this.context.strict && params.stricted) {
	            this.tolerateUnexpectedToken(params.stricted, params.message);
	        }
	        this.context.strict = previousStrict;
	        this.context.allowStrictDirective = previousAllowStrictDirective;
	        return body;
	    };
	    Parser.prototype.parsePropertyMethodFunction = function () {
	        var isGenerator = false;
	        var node = this.createNode();
	        var previousAllowYield = this.context.allowYield;
	        this.context.allowYield = true;
	        var params = this.parseFormalParameters();
	        var method = this.parsePropertyMethod(params);
	        this.context.allowYield = previousAllowYield;
	        return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator));
	    };
	    Parser.prototype.parsePropertyMethodAsyncFunction = function () {
	        var node = this.createNode();
	        var previousAllowYield = this.context.allowYield;
	        var previousAwait = this.context.await;
	        this.context.allowYield = false;
	        this.context.await = true;
	        var params = this.parseFormalParameters();
	        var method = this.parsePropertyMethod(params);
	        this.context.allowYield = previousAllowYield;
	        this.context.await = previousAwait;
	        return this.finalize(node, new Node.AsyncFunctionExpression(null, params.params, method));
	    };
	    Parser.prototype.parseObjectPropertyKey = function () {
	        var node = this.createNode();
	        var token = this.nextToken();
	        var key;
	        switch (token.type) {
	            case 8 /* StringLiteral */:
	            case 6 /* NumericLiteral */:
	                if (this.context.strict && token.octal) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictOctalLiteral);
	                }
	                var raw = this.getTokenRaw(token);
	                key = this.finalize(node, new Node.Literal(token.value, raw));
	                break;
	            case 3 /* Identifier */:
	            case 1 /* BooleanLiteral */:
	            case 5 /* NullLiteral */:
	            case 4 /* Keyword */:
	                key = this.finalize(node, new Node.Identifier(token.value));
	                break;
	            case 7 /* Punctuator */:
	                if (token.value === '[') {
	                    key = this.isolateCoverGrammar(this.parseAssignmentExpression);
	                    this.expect(']');
	                }
	                else {
	                    key = this.throwUnexpectedToken(token);
	                }
	                break;
	            default:
	                key = this.throwUnexpectedToken(token);
	        }
	        return key;
	    };
	    Parser.prototype.isPropertyKey = function (key, value) {
	        return (key.type === syntax_1.Syntax.Identifier && key.name === value) ||
	            (key.type === syntax_1.Syntax.Literal && key.value === value);
	    };
	    Parser.prototype.parseObjectProperty = function (hasProto) {
	        var node = this.createNode();
	        var token = this.lookahead;
	        var kind;
	        var key = null;
	        var value = null;
	        var computed = false;
	        var method = false;
	        var shorthand = false;
	        var isAsync = false;
	        if (token.type === 3 /* Identifier */) {
	            var id = token.value;
	            this.nextToken();
	            computed = this.match('[');
	            isAsync = !this.hasLineTerminator && (id === 'async') &&
	                !this.match(':') && !this.match('(') && !this.match('*') && !this.match(',');
	            key = isAsync ? this.parseObjectPropertyKey() : this.finalize(node, new Node.Identifier(id));
	        }
	        else if (this.match('*')) {
	            this.nextToken();
	        }
	        else {
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	        }
	        var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead);
	        if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'get' && lookaheadPropertyKey) {
	            kind = 'get';
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            this.context.allowYield = false;
	            value = this.parseGetterMethod();
	        }
	        else if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'set' && lookaheadPropertyKey) {
	            kind = 'set';
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            value = this.parseSetterMethod();
	        }
	        else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) {
	            kind = 'init';
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            value = this.parseGeneratorMethod();
	            method = true;
	        }
	        else {
	            if (!key) {
	                this.throwUnexpectedToken(this.lookahead);
	            }
	            kind = 'init';
	            if (this.match(':') && !isAsync) {
	                if (!computed && this.isPropertyKey(key, '__proto__')) {
	                    if (hasProto.value) {
	                        this.tolerateError(messages_1.Messages.DuplicateProtoProperty);
	                    }
	                    hasProto.value = true;
	                }
	                this.nextToken();
	                value = this.inheritCoverGrammar(this.parseAssignmentExpression);
	            }
	            else if (this.match('(')) {
	                value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction();
	                method = true;
	            }
	            else if (token.type === 3 /* Identifier */) {
	                var id = this.finalize(node, new Node.Identifier(token.value));
	                if (this.match('=')) {
	                    this.context.firstCoverInitializedNameError = this.lookahead;
	                    this.nextToken();
	                    shorthand = true;
	                    var init = this.isolateCoverGrammar(this.parseAssignmentExpression);
	                    value = this.finalize(node, new Node.AssignmentPattern(id, init));
	                }
	                else {
	                    shorthand = true;
	                    value = id;
	                }
	            }
	            else {
	                this.throwUnexpectedToken(this.nextToken());
	            }
	        }
	        return this.finalize(node, new Node.Property(kind, key, computed, value, method, shorthand));
	    };
	    Parser.prototype.parseObjectInitializer = function () {
	        var node = this.createNode();
	        this.expect('{');
	        var properties = [];
	        var hasProto = { value: false };
	        while (!this.match('}')) {
	            properties.push(this.parseObjectProperty(hasProto));
	            if (!this.match('}')) {
	                this.expectCommaSeparator();
	            }
	        }
	        this.expect('}');
	        return this.finalize(node, new Node.ObjectExpression(properties));
	    };
	    // https://tc39.github.io/ecma262/#sec-template-literals
	    Parser.prototype.parseTemplateHead = function () {
	        assert_1.assert(this.lookahead.head, 'Template literal must start with a template head');
	        var node = this.createNode();
	        var token = this.nextToken();
	        var raw = token.value;
	        var cooked = token.cooked;
	        return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail));
	    };
	    Parser.prototype.parseTemplateElement = function () {
	        if (this.lookahead.type !== 10 /* Template */) {
	            this.throwUnexpectedToken();
	        }
	        var node = this.createNode();
	        var token = this.nextToken();
	        var raw = token.value;
	        var cooked = token.cooked;
	        return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail));
	    };
	    Parser.prototype.parseTemplateLiteral = function () {
	        var node = this.createNode();
	        var expressions = [];
	        var quasis = [];
	        var quasi = this.parseTemplateHead();
	        quasis.push(quasi);
	        while (!quasi.tail) {
	            expressions.push(this.parseExpression());
	            quasi = this.parseTemplateElement();
	            quasis.push(quasi);
	        }
	        return this.finalize(node, new Node.TemplateLiteral(quasis, expressions));
	    };
	    // https://tc39.github.io/ecma262/#sec-grouping-operator
	    Parser.prototype.reinterpretExpressionAsPattern = function (expr) {
	        switch (expr.type) {
	            case syntax_1.Syntax.Identifier:
	            case syntax_1.Syntax.MemberExpression:
	            case syntax_1.Syntax.RestElement:
	            case syntax_1.Syntax.AssignmentPattern:
	                break;
	            case syntax_1.Syntax.SpreadElement:
	                expr.type = syntax_1.Syntax.RestElement;
	                this.reinterpretExpressionAsPattern(expr.argument);
	                break;
	            case syntax_1.Syntax.ArrayExpression:
	                expr.type = syntax_1.Syntax.ArrayPattern;
	                for (var i = 0; i < expr.elements.length; i++) {
	                    if (expr.elements[i] !== null) {
	                        this.reinterpretExpressionAsPattern(expr.elements[i]);
	                    }
	                }
	                break;
	            case syntax_1.Syntax.ObjectExpression:
	                expr.type = syntax_1.Syntax.ObjectPattern;
	                for (var i = 0; i < expr.properties.length; i++) {
	                    this.reinterpretExpressionAsPattern(expr.properties[i].value);
	                }
	                break;
	            case syntax_1.Syntax.AssignmentExpression:
	                expr.type = syntax_1.Syntax.AssignmentPattern;
	                delete expr.operator;
	                this.reinterpretExpressionAsPattern(expr.left);
	                break;
	            default:
	                // Allow other node type for tolerant parsing.
	                break;
	        }
	    };
	    Parser.prototype.parseGroupExpression = function () {
	        var expr;
	        this.expect('(');
	        if (this.match(')')) {
	            this.nextToken();
	            if (!this.match('=>')) {
	                this.expect('=>');
	            }
	            expr = {
	                type: ArrowParameterPlaceHolder,
	                params: [],
	                async: false
	            };
	        }
	        else {
	            var startToken = this.lookahead;
	            var params = [];
	            if (this.match('...')) {
	                expr = this.parseRestElement(params);
	                this.expect(')');
	                if (!this.match('=>')) {
	                    this.expect('=>');
	                }
	                expr = {
	                    type: ArrowParameterPlaceHolder,
	                    params: [expr],
	                    async: false
	                };
	            }
	            else {
	                var arrow = false;
	                this.context.isBindingElement = true;
	                expr = this.inheritCoverGrammar(this.parseAssignmentExpression);
	                if (this.match(',')) {
	                    var expressions = [];
	                    this.context.isAssignmentTarget = false;
	                    expressions.push(expr);
	                    while (this.lookahead.type !== 2 /* EOF */) {
	                        if (!this.match(',')) {
	                            break;
	                        }
	                        this.nextToken();
	                        if (this.match(')')) {
	                            this.nextToken();
	                            for (var i = 0; i < expressions.length; i++) {
	                                this.reinterpretExpressionAsPattern(expressions[i]);
	                            }
	                            arrow = true;
	                            expr = {
	                                type: ArrowParameterPlaceHolder,
	                                params: expressions,
	                                async: false
	                            };
	                        }
	                        else if (this.match('...')) {
	                            if (!this.context.isBindingElement) {
	                                this.throwUnexpectedToken(this.lookahead);
	                            }
	                            expressions.push(this.parseRestElement(params));
	                            this.expect(')');
	                            if (!this.match('=>')) {
	                                this.expect('=>');
	                            }
	                            this.context.isBindingElement = false;
	                            for (var i = 0; i < expressions.length; i++) {
	                                this.reinterpretExpressionAsPattern(expressions[i]);
	                            }
	                            arrow = true;
	                            expr = {
	                                type: ArrowParameterPlaceHolder,
	                                params: expressions,
	                                async: false
	                            };
	                        }
	                        else {
	                            expressions.push(this.inheritCoverGrammar(this.parseAssignmentExpression));
	                        }
	                        if (arrow) {
	                            break;
	                        }
	                    }
	                    if (!arrow) {
	                        expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions));
	                    }
	                }
	                if (!arrow) {
	                    this.expect(')');
	                    if (this.match('=>')) {
	                        if (expr.type === syntax_1.Syntax.Identifier && expr.name === 'yield') {
	                            arrow = true;
	                            expr = {
	                                type: ArrowParameterPlaceHolder,
	                                params: [expr],
	                                async: false
	                            };
	                        }
	                        if (!arrow) {
	                            if (!this.context.isBindingElement) {
	                                this.throwUnexpectedToken(this.lookahead);
	                            }
	                            if (expr.type === syntax_1.Syntax.SequenceExpression) {
	                                for (var i = 0; i < expr.expressions.length; i++) {
	                                    this.reinterpretExpressionAsPattern(expr.expressions[i]);
	                                }
	                            }
	                            else {
	                                this.reinterpretExpressionAsPattern(expr);
	                            }
	                            var parameters = (expr.type === syntax_1.Syntax.SequenceExpression ? expr.expressions : [expr]);
	                            expr = {
	                                type: ArrowParameterPlaceHolder,
	                                params: parameters,
	                                async: false
	                            };
	                        }
	                    }
	                    this.context.isBindingElement = false;
	                }
	            }
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-left-hand-side-expressions
	    Parser.prototype.parseArguments = function () {
	        this.expect('(');
	        var args = [];
	        if (!this.match(')')) {
	            while (true) {
	                var expr = this.match('...') ? this.parseSpreadElement() :
	                    this.isolateCoverGrammar(this.parseAssignmentExpression);
	                args.push(expr);
	                if (this.match(')')) {
	                    break;
	                }
	                this.expectCommaSeparator();
	                if (this.match(')')) {
	                    break;
	                }
	            }
	        }
	        this.expect(')');
	        return args;
	    };
	    Parser.prototype.isIdentifierName = function (token) {
	        return token.type === 3 /* Identifier */ ||
	            token.type === 4 /* Keyword */ ||
	            token.type === 1 /* BooleanLiteral */ ||
	            token.type === 5 /* NullLiteral */;
	    };
	    Parser.prototype.parseIdentifierName = function () {
	        var node = this.createNode();
	        var token = this.nextToken();
	        if (!this.isIdentifierName(token)) {
	            this.throwUnexpectedToken(token);
	        }
	        return this.finalize(node, new Node.Identifier(token.value));
	    };
	    Parser.prototype.parseNewExpression = function () {
	        var node = this.createNode();
	        var id = this.parseIdentifierName();
	        assert_1.assert(id.name === 'new', 'New expression must start with `new`');
	        var expr;
	        if (this.match('.')) {
	            this.nextToken();
	            if (this.lookahead.type === 3 /* Identifier */ && this.context.inFunctionBody && this.lookahead.value === 'target') {
	                var property = this.parseIdentifierName();
	                expr = new Node.MetaProperty(id, property);
	            }
	            else {
	                this.throwUnexpectedToken(this.lookahead);
	            }
	        }
	        else {
	            var callee = this.isolateCoverGrammar(this.parseLeftHandSideExpression);
	            var args = this.match('(') ? this.parseArguments() : [];
	            expr = new Node.NewExpression(callee, args);
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	        }
	        return this.finalize(node, expr);
	    };
	    Parser.prototype.parseAsyncArgument = function () {
	        var arg = this.parseAssignmentExpression();
	        this.context.firstCoverInitializedNameError = null;
	        return arg;
	    };
	    Parser.prototype.parseAsyncArguments = function () {
	        this.expect('(');
	        var args = [];
	        if (!this.match(')')) {
	            while (true) {
	                var expr = this.match('...') ? this.parseSpreadElement() :
	                    this.isolateCoverGrammar(this.parseAsyncArgument);
	                args.push(expr);
	                if (this.match(')')) {
	                    break;
	                }
	                this.expectCommaSeparator();
	                if (this.match(')')) {
	                    break;
	                }
	            }
	        }
	        this.expect(')');
	        return args;
	    };
	    Parser.prototype.parseLeftHandSideExpressionAllowCall = function () {
	        var startToken = this.lookahead;
	        var maybeAsync = this.matchContextualKeyword('async');
	        var previousAllowIn = this.context.allowIn;
	        this.context.allowIn = true;
	        var expr;
	        if (this.matchKeyword('super') && this.context.inFunctionBody) {
	            expr = this.createNode();
	            this.nextToken();
	            expr = this.finalize(expr, new Node.Super());
	            if (!this.match('(') && !this.match('.') && !this.match('[')) {
	                this.throwUnexpectedToken(this.lookahead);
	            }
	        }
	        else {
	            expr = this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression);
	        }
	        while (true) {
	            if (this.match('.')) {
	                this.context.isBindingElement = false;
	                this.context.isAssignmentTarget = true;
	                this.expect('.');
	                var property = this.parseIdentifierName();
	                expr = this.finalize(this.startNode(startToken), new Node.StaticMemberExpression(expr, property));
	            }
	            else if (this.match('(')) {
	                var asyncArrow = maybeAsync && (startToken.lineNumber === this.lookahead.lineNumber);
	                this.context.isBindingElement = false;
	                this.context.isAssignmentTarget = false;
	                var args = asyncArrow ? this.parseAsyncArguments() : this.parseArguments();
	                expr = this.finalize(this.startNode(startToken), new Node.CallExpression(expr, args));
	                if (asyncArrow && this.match('=>')) {
	                    for (var i = 0; i < args.length; ++i) {
	                        this.reinterpretExpressionAsPattern(args[i]);
	                    }
	                    expr = {
	                        type: ArrowParameterPlaceHolder,
	                        params: args,
	                        async: true
	                    };
	                }
	            }
	            else if (this.match('[')) {
	                this.context.isBindingElement = false;
	                this.context.isAssignmentTarget = true;
	                this.expect('[');
	                var property = this.isolateCoverGrammar(this.parseExpression);
	                this.expect(']');
	                expr = this.finalize(this.startNode(startToken), new Node.ComputedMemberExpression(expr, property));
	            }
	            else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) {
	                var quasi = this.parseTemplateLiteral();
	                expr = this.finalize(this.startNode(startToken), new Node.TaggedTemplateExpression(expr, quasi));
	            }
	            else {
	                break;
	            }
	        }
	        this.context.allowIn = previousAllowIn;
	        return expr;
	    };
	    Parser.prototype.parseSuper = function () {
	        var node = this.createNode();
	        this.expectKeyword('super');
	        if (!this.match('[') && !this.match('.')) {
	            this.throwUnexpectedToken(this.lookahead);
	        }
	        return this.finalize(node, new Node.Super());
	    };
	    Parser.prototype.parseLeftHandSideExpression = function () {
	        assert_1.assert(this.context.allowIn, 'callee of new expression always allow in keyword.');
	        var node = this.startNode(this.lookahead);
	        var expr = (this.matchKeyword('super') && this.context.inFunctionBody) ? this.parseSuper() :
	            this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression);
	        while (true) {
	            if (this.match('[')) {
	                this.context.isBindingElement = false;
	                this.context.isAssignmentTarget = true;
	                this.expect('[');
	                var property = this.isolateCoverGrammar(this.parseExpression);
	                this.expect(']');
	                expr = this.finalize(node, new Node.ComputedMemberExpression(expr, property));
	            }
	            else if (this.match('.')) {
	                this.context.isBindingElement = false;
	                this.context.isAssignmentTarget = true;
	                this.expect('.');
	                var property = this.parseIdentifierName();
	                expr = this.finalize(node, new Node.StaticMemberExpression(expr, property));
	            }
	            else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) {
	                var quasi = this.parseTemplateLiteral();
	                expr = this.finalize(node, new Node.TaggedTemplateExpression(expr, quasi));
	            }
	            else {
	                break;
	            }
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-update-expressions
	    Parser.prototype.parseUpdateExpression = function () {
	        var expr;
	        var startToken = this.lookahead;
	        if (this.match('++') || this.match('--')) {
	            var node = this.startNode(startToken);
	            var token = this.nextToken();
	            expr = this.inheritCoverGrammar(this.parseUnaryExpression);
	            if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) {
	                this.tolerateError(messages_1.Messages.StrictLHSPrefix);
	            }
	            if (!this.context.isAssignmentTarget) {
	                this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);
	            }
	            var prefix = true;
	            expr = this.finalize(node, new Node.UpdateExpression(token.value, expr, prefix));
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	        }
	        else {
	            expr = this.inheritCoverGrammar(this.parseLeftHandSideExpressionAllowCall);
	            if (!this.hasLineTerminator && this.lookahead.type === 7 /* Punctuator */) {
	                if (this.match('++') || this.match('--')) {
	                    if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) {
	                        this.tolerateError(messages_1.Messages.StrictLHSPostfix);
	                    }
	                    if (!this.context.isAssignmentTarget) {
	                        this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);
	                    }
	                    this.context.isAssignmentTarget = false;
	                    this.context.isBindingElement = false;
	                    var operator = this.nextToken().value;
	                    var prefix = false;
	                    expr = this.finalize(this.startNode(startToken), new Node.UpdateExpression(operator, expr, prefix));
	                }
	            }
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-unary-operators
	    Parser.prototype.parseAwaitExpression = function () {
	        var node = this.createNode();
	        this.nextToken();
	        var argument = this.parseUnaryExpression();
	        return this.finalize(node, new Node.AwaitExpression(argument));
	    };
	    Parser.prototype.parseUnaryExpression = function () {
	        var expr;
	        if (this.match('+') || this.match('-') || this.match('~') || this.match('!') ||
	            this.matchKeyword('delete') || this.matchKeyword('void') || this.matchKeyword('typeof')) {
	            var node = this.startNode(this.lookahead);
	            var token = this.nextToken();
	            expr = this.inheritCoverGrammar(this.parseUnaryExpression);
	            expr = this.finalize(node, new Node.UnaryExpression(token.value, expr));
	            if (this.context.strict && expr.operator === 'delete' && expr.argument.type === syntax_1.Syntax.Identifier) {
	                this.tolerateError(messages_1.Messages.StrictDelete);
	            }
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	        }
	        else if (this.context.await && this.matchContextualKeyword('await')) {
	            expr = this.parseAwaitExpression();
	        }
	        else {
	            expr = this.parseUpdateExpression();
	        }
	        return expr;
	    };
	    Parser.prototype.parseExponentiationExpression = function () {
	        var startToken = this.lookahead;
	        var expr = this.inheritCoverGrammar(this.parseUnaryExpression);
	        if (expr.type !== syntax_1.Syntax.UnaryExpression && this.match('**')) {
	            this.nextToken();
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	            var left = expr;
	            var right = this.isolateCoverGrammar(this.parseExponentiationExpression);
	            expr = this.finalize(this.startNode(startToken), new Node.BinaryExpression('**', left, right));
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-exp-operator
	    // https://tc39.github.io/ecma262/#sec-multiplicative-operators
	    // https://tc39.github.io/ecma262/#sec-additive-operators
	    // https://tc39.github.io/ecma262/#sec-bitwise-shift-operators
	    // https://tc39.github.io/ecma262/#sec-relational-operators
	    // https://tc39.github.io/ecma262/#sec-equality-operators
	    // https://tc39.github.io/ecma262/#sec-binary-bitwise-operators
	    // https://tc39.github.io/ecma262/#sec-binary-logical-operators
	    Parser.prototype.binaryPrecedence = function (token) {
	        var op = token.value;
	        var precedence;
	        if (token.type === 7 /* Punctuator */) {
	            precedence = this.operatorPrecedence[op] || 0;
	        }
	        else if (token.type === 4 /* Keyword */) {
	            precedence = (op === 'instanceof' || (this.context.allowIn && op === 'in')) ? 7 : 0;
	        }
	        else {
	            precedence = 0;
	        }
	        return precedence;
	    };
	    Parser.prototype.parseBinaryExpression = function () {
	        var startToken = this.lookahead;
	        var expr = this.inheritCoverGrammar(this.parseExponentiationExpression);
	        var token = this.lookahead;
	        var prec = this.binaryPrecedence(token);
	        if (prec > 0) {
	            this.nextToken();
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	            var markers = [startToken, this.lookahead];
	            var left = expr;
	            var right = this.isolateCoverGrammar(this.parseExponentiationExpression);
	            var stack = [left, token.value, right];
	            var precedences = [prec];
	            while (true) {
	                prec = this.binaryPrecedence(this.lookahead);
	                if (prec <= 0) {
	                    break;
	                }
	                // Reduce: make a binary expression from the three topmost entries.
	                while ((stack.length > 2) && (prec <= precedences[precedences.length - 1])) {
	                    right = stack.pop();
	                    var operator = stack.pop();
	                    precedences.pop();
	                    left = stack.pop();
	                    markers.pop();
	                    var node = this.startNode(markers[markers.length - 1]);
	                    stack.push(this.finalize(node, new Node.BinaryExpression(operator, left, right)));
	                }
	                // Shift.
	                stack.push(this.nextToken().value);
	                precedences.push(prec);
	                markers.push(this.lookahead);
	                stack.push(this.isolateCoverGrammar(this.parseExponentiationExpression));
	            }
	            // Final reduce to clean-up the stack.
	            var i = stack.length - 1;
	            expr = stack[i];
	            var lastMarker = markers.pop();
	            while (i > 1) {
	                var marker = markers.pop();
	                var lastLineStart = lastMarker && lastMarker.lineStart;
	                var node = this.startNode(marker, lastLineStart);
	                var operator = stack[i - 1];
	                expr = this.finalize(node, new Node.BinaryExpression(operator, stack[i - 2], expr));
	                i -= 2;
	                lastMarker = marker;
	            }
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-conditional-operator
	    Parser.prototype.parseConditionalExpression = function () {
	        var startToken = this.lookahead;
	        var expr = this.inheritCoverGrammar(this.parseBinaryExpression);
	        if (this.match('?')) {
	            this.nextToken();
	            var previousAllowIn = this.context.allowIn;
	            this.context.allowIn = true;
	            var consequent = this.isolateCoverGrammar(this.parseAssignmentExpression);
	            this.context.allowIn = previousAllowIn;
	            this.expect(':');
	            var alternate = this.isolateCoverGrammar(this.parseAssignmentExpression);
	            expr = this.finalize(this.startNode(startToken), new Node.ConditionalExpression(expr, consequent, alternate));
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-assignment-operators
	    Parser.prototype.checkPatternParam = function (options, param) {
	        switch (param.type) {
	            case syntax_1.Syntax.Identifier:
	                this.validateParam(options, param, param.name);
	                break;
	            case syntax_1.Syntax.RestElement:
	                this.checkPatternParam(options, param.argument);
	                break;
	            case syntax_1.Syntax.AssignmentPattern:
	                this.checkPatternParam(options, param.left);
	                break;
	            case syntax_1.Syntax.ArrayPattern:
	                for (var i = 0; i < param.elements.length; i++) {
	                    if (param.elements[i] !== null) {
	                        this.checkPatternParam(options, param.elements[i]);
	                    }
	                }
	                break;
	            case syntax_1.Syntax.ObjectPattern:
	                for (var i = 0; i < param.properties.length; i++) {
	                    this.checkPatternParam(options, param.properties[i].value);
	                }
	                break;
	            default:
	                break;
	        }
	        options.simple = options.simple && (param instanceof Node.Identifier);
	    };
	    Parser.prototype.reinterpretAsCoverFormalsList = function (expr) {
	        var params = [expr];
	        var options;
	        var asyncArrow = false;
	        switch (expr.type) {
	            case syntax_1.Syntax.Identifier:
	                break;
	            case ArrowParameterPlaceHolder:
	                params = expr.params;
	                asyncArrow = expr.async;
	                break;
	            default:
	                return null;
	        }
	        options = {
	            simple: true,
	            paramSet: {}
	        };
	        for (var i = 0; i < params.length; ++i) {
	            var param = params[i];
	            if (param.type === syntax_1.Syntax.AssignmentPattern) {
	                if (param.right.type === syntax_1.Syntax.YieldExpression) {
	                    if (param.right.argument) {
	                        this.throwUnexpectedToken(this.lookahead);
	                    }
	                    param.right.type = syntax_1.Syntax.Identifier;
	                    param.right.name = 'yield';
	                    delete param.right.argument;
	                    delete param.right.delegate;
	                }
	            }
	            else if (asyncArrow && param.type === syntax_1.Syntax.Identifier && param.name === 'await') {
	                this.throwUnexpectedToken(this.lookahead);
	            }
	            this.checkPatternParam(options, param);
	            params[i] = param;
	        }
	        if (this.context.strict || !this.context.allowYield) {
	            for (var i = 0; i < params.length; ++i) {
	                var param = params[i];
	                if (param.type === syntax_1.Syntax.YieldExpression) {
	                    this.throwUnexpectedToken(this.lookahead);
	                }
	            }
	        }
	        if (options.message === messages_1.Messages.StrictParamDupe) {
	            var token = this.context.strict ? options.stricted : options.firstRestricted;
	            this.throwUnexpectedToken(token, options.message);
	        }
	        return {
	            simple: options.simple,
	            params: params,
	            stricted: options.stricted,
	            firstRestricted: options.firstRestricted,
	            message: options.message
	        };
	    };
	    Parser.prototype.parseAssignmentExpression = function () {
	        var expr;
	        if (!this.context.allowYield && this.matchKeyword('yield')) {
	            expr = this.parseYieldExpression();
	        }
	        else {
	            var startToken = this.lookahead;
	            var token = startToken;
	            expr = this.parseConditionalExpression();
	            if (token.type === 3 /* Identifier */ && (token.lineNumber === this.lookahead.lineNumber) && token.value === 'async') {
	                if (this.lookahead.type === 3 /* Identifier */ || this.matchKeyword('yield')) {
	                    var arg = this.parsePrimaryExpression();
	                    this.reinterpretExpressionAsPattern(arg);
	                    expr = {
	                        type: ArrowParameterPlaceHolder,
	                        params: [arg],
	                        async: true
	                    };
	                }
	            }
	            if (expr.type === ArrowParameterPlaceHolder || this.match('=>')) {
	                // https://tc39.github.io/ecma262/#sec-arrow-function-definitions
	                this.context.isAssignmentTarget = false;
	                this.context.isBindingElement = false;
	                var isAsync = expr.async;
	                var list = this.reinterpretAsCoverFormalsList(expr);
	                if (list) {
	                    if (this.hasLineTerminator) {
	                        this.tolerateUnexpectedToken(this.lookahead);
	                    }
	                    this.context.firstCoverInitializedNameError = null;
	                    var previousStrict = this.context.strict;
	                    var previousAllowStrictDirective = this.context.allowStrictDirective;
	                    this.context.allowStrictDirective = list.simple;
	                    var previousAllowYield = this.context.allowYield;
	                    var previousAwait = this.context.await;
	                    this.context.allowYield = true;
	                    this.context.await = isAsync;
	                    var node = this.startNode(startToken);
	                    this.expect('=>');
	                    var body = void 0;
	                    if (this.match('{')) {
	                        var previousAllowIn = this.context.allowIn;
	                        this.context.allowIn = true;
	                        body = this.parseFunctionSourceElements();
	                        this.context.allowIn = previousAllowIn;
	                    }
	                    else {
	                        body = this.isolateCoverGrammar(this.parseAssignmentExpression);
	                    }
	                    var expression = body.type !== syntax_1.Syntax.BlockStatement;
	                    if (this.context.strict && list.firstRestricted) {
	                        this.throwUnexpectedToken(list.firstRestricted, list.message);
	                    }
	                    if (this.context.strict && list.stricted) {
	                        this.tolerateUnexpectedToken(list.stricted, list.message);
	                    }
	                    expr = isAsync ? this.finalize(node, new Node.AsyncArrowFunctionExpression(list.params, body, expression)) :
	                        this.finalize(node, new Node.ArrowFunctionExpression(list.params, body, expression));
	                    this.context.strict = previousStrict;
	                    this.context.allowStrictDirective = previousAllowStrictDirective;
	                    this.context.allowYield = previousAllowYield;
	                    this.context.await = previousAwait;
	                }
	            }
	            else {
	                if (this.matchAssign()) {
	                    if (!this.context.isAssignmentTarget) {
	                        this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);
	                    }
	                    if (this.context.strict && expr.type === syntax_1.Syntax.Identifier) {
	                        var id = expr;
	                        if (this.scanner.isRestrictedWord(id.name)) {
	                            this.tolerateUnexpectedToken(token, messages_1.Messages.StrictLHSAssignment);
	                        }
	                        if (this.scanner.isStrictModeReservedWord(id.name)) {
	                            this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);
	                        }
	                    }
	                    if (!this.match('=')) {
	                        this.context.isAssignmentTarget = false;
	                        this.context.isBindingElement = false;
	                    }
	                    else {
	                        this.reinterpretExpressionAsPattern(expr);
	                    }
	                    token = this.nextToken();
	                    var operator = token.value;
	                    var right = this.isolateCoverGrammar(this.parseAssignmentExpression);
	                    expr = this.finalize(this.startNode(startToken), new Node.AssignmentExpression(operator, expr, right));
	                    this.context.firstCoverInitializedNameError = null;
	                }
	            }
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-comma-operator
	    Parser.prototype.parseExpression = function () {
	        var startToken = this.lookahead;
	        var expr = this.isolateCoverGrammar(this.parseAssignmentExpression);
	        if (this.match(',')) {
	            var expressions = [];
	            expressions.push(expr);
	            while (this.lookahead.type !== 2 /* EOF */) {
	                if (!this.match(',')) {
	                    break;
	                }
	                this.nextToken();
	                expressions.push(this.isolateCoverGrammar(this.parseAssignmentExpression));
	            }
	            expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions));
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-block
	    Parser.prototype.parseStatementListItem = function () {
	        var statement;
	        this.context.isAssignmentTarget = true;
	        this.context.isBindingElement = true;
	        if (this.lookahead.type === 4 /* Keyword */) {
	            switch (this.lookahead.value) {
	                case 'export':
	                    if (!this.context.isModule) {
	                        this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalExportDeclaration);
	                    }
	                    statement = this.parseExportDeclaration();
	                    break;
	                case 'import':
	                    if (!this.context.isModule) {
	                        this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalImportDeclaration);
	                    }
	                    statement = this.parseImportDeclaration();
	                    break;
	                case 'const':
	                    statement = this.parseLexicalDeclaration({ inFor: false });
	                    break;
	                case 'function':
	                    statement = this.parseFunctionDeclaration();
	                    break;
	                case 'class':
	                    statement = this.parseClassDeclaration();
	                    break;
	                case 'let':
	                    statement = this.isLexicalDeclaration() ? this.parseLexicalDeclaration({ inFor: false }) : this.parseStatement();
	                    break;
	                default:
	                    statement = this.parseStatement();
	                    break;
	            }
	        }
	        else {
	            statement = this.parseStatement();
	        }
	        return statement;
	    };
	    Parser.prototype.parseBlock = function () {
	        var node = this.createNode();
	        this.expect('{');
	        var block = [];
	        while (true) {
	            if (this.match('}')) {
	                break;
	            }
	            block.push(this.parseStatementListItem());
	        }
	        this.expect('}');
	        return this.finalize(node, new Node.BlockStatement(block));
	    };
	    // https://tc39.github.io/ecma262/#sec-let-and-const-declarations
	    Parser.prototype.parseLexicalBinding = function (kind, options) {
	        var node = this.createNode();
	        var params = [];
	        var id = this.parsePattern(params, kind);
	        if (this.context.strict && id.type === syntax_1.Syntax.Identifier) {
	            if (this.scanner.isRestrictedWord(id.name)) {
	                this.tolerateError(messages_1.Messages.StrictVarName);
	            }
	        }
	        var init = null;
	        if (kind === 'const') {
	            if (!this.matchKeyword('in') && !this.matchContextualKeyword('of')) {
	                if (this.match('=')) {
	                    this.nextToken();
	                    init = this.isolateCoverGrammar(this.parseAssignmentExpression);
	                }
	                else {
	                    this.throwError(messages_1.Messages.DeclarationMissingInitializer, 'const');
	                }
	            }
	        }
	        else if ((!options.inFor && id.type !== syntax_1.Syntax.Identifier) || this.match('=')) {
	            this.expect('=');
	            init = this.isolateCoverGrammar(this.parseAssignmentExpression);
	        }
	        return this.finalize(node, new Node.VariableDeclarator(id, init));
	    };
	    Parser.prototype.parseBindingList = function (kind, options) {
	        var list = [this.parseLexicalBinding(kind, options)];
	        while (this.match(',')) {
	            this.nextToken();
	            list.push(this.parseLexicalBinding(kind, options));
	        }
	        return list;
	    };
	    Parser.prototype.isLexicalDeclaration = function () {
	        var state = this.scanner.saveState();
	        this.scanner.scanComments();
	        var next = this.scanner.lex();
	        this.scanner.restoreState(state);
	        return (next.type === 3 /* Identifier */) ||
	            (next.type === 7 /* Punctuator */ && next.value === '[') ||
	            (next.type === 7 /* Punctuator */ && next.value === '{') ||
	            (next.type === 4 /* Keyword */ && next.value === 'let') ||
	            (next.type === 4 /* Keyword */ && next.value === 'yield');
	    };
	    Parser.prototype.parseLexicalDeclaration = function (options) {
	        var node = this.createNode();
	        var kind = this.nextToken().value;
	        assert_1.assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const');
	        var declarations = this.parseBindingList(kind, options);
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.VariableDeclaration(declarations, kind));
	    };
	    // https://tc39.github.io/ecma262/#sec-destructuring-binding-patterns
	    Parser.prototype.parseBindingRestElement = function (params, kind) {
	        var node = this.createNode();
	        this.expect('...');
	        var arg = this.parsePattern(params, kind);
	        return this.finalize(node, new Node.RestElement(arg));
	    };
	    Parser.prototype.parseArrayPattern = function (params, kind) {
	        var node = this.createNode();
	        this.expect('[');
	        var elements = [];
	        while (!this.match(']')) {
	            if (this.match(',')) {
	                this.nextToken();
	                elements.push(null);
	            }
	            else {
	                if (this.match('...')) {
	                    elements.push(this.parseBindingRestElement(params, kind));
	                    break;
	                }
	                else {
	                    elements.push(this.parsePatternWithDefault(params, kind));
	                }
	                if (!this.match(']')) {
	                    this.expect(',');
	                }
	            }
	        }
	        this.expect(']');
	        return this.finalize(node, new Node.ArrayPattern(elements));
	    };
	    Parser.prototype.parsePropertyPattern = function (params, kind) {
	        var node = this.createNode();
	        var computed = false;
	        var shorthand = false;
	        var method = false;
	        var key;
	        var value;
	        if (this.lookahead.type === 3 /* Identifier */) {
	            var keyToken = this.lookahead;
	            key = this.parseVariableIdentifier();
	            var init = this.finalize(node, new Node.Identifier(keyToken.value));
	            if (this.match('=')) {
	                params.push(keyToken);
	                shorthand = true;
	                this.nextToken();
	                var expr = this.parseAssignmentExpression();
	                value = this.finalize(this.startNode(keyToken), new Node.AssignmentPattern(init, expr));
	            }
	            else if (!this.match(':')) {
	                params.push(keyToken);
	                shorthand = true;
	                value = init;
	            }
	            else {
	                this.expect(':');
	                value = this.parsePatternWithDefault(params, kind);
	            }
	        }
	        else {
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            this.expect(':');
	            value = this.parsePatternWithDefault(params, kind);
	        }
	        return this.finalize(node, new Node.Property('init', key, computed, value, method, shorthand));
	    };
	    Parser.prototype.parseObjectPattern = function (params, kind) {
	        var node = this.createNode();
	        var properties = [];
	        this.expect('{');
	        while (!this.match('}')) {
	            properties.push(this.parsePropertyPattern(params, kind));
	            if (!this.match('}')) {
	                this.expect(',');
	            }
	        }
	        this.expect('}');
	        return this.finalize(node, new Node.ObjectPattern(properties));
	    };
	    Parser.prototype.parsePattern = function (params, kind) {
	        var pattern;
	        if (this.match('[')) {
	            pattern = this.parseArrayPattern(params, kind);
	        }
	        else if (this.match('{')) {
	            pattern = this.parseObjectPattern(params, kind);
	        }
	        else {
	            if (this.matchKeyword('let') && (kind === 'const' || kind === 'let')) {
	                this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.LetInLexicalBinding);
	            }
	            params.push(this.lookahead);
	            pattern = this.parseVariableIdentifier(kind);
	        }
	        return pattern;
	    };
	    Parser.prototype.parsePatternWithDefault = function (params, kind) {
	        var startToken = this.lookahead;
	        var pattern = this.parsePattern(params, kind);
	        if (this.match('=')) {
	            this.nextToken();
	            var previousAllowYield = this.context.allowYield;
	            this.context.allowYield = true;
	            var right = this.isolateCoverGrammar(this.parseAssignmentExpression);
	            this.context.allowYield = previousAllowYield;
	            pattern = this.finalize(this.startNode(startToken), new Node.AssignmentPattern(pattern, right));
	        }
	        return pattern;
	    };
	    // https://tc39.github.io/ecma262/#sec-variable-statement
	    Parser.prototype.parseVariableIdentifier = function (kind) {
	        var node = this.createNode();
	        var token = this.nextToken();
	        if (token.type === 4 /* Keyword */ && token.value === 'yield') {
	            if (this.context.strict) {
	                this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);
	            }
	            else if (!this.context.allowYield) {
	                this.throwUnexpectedToken(token);
	            }
	        }
	        else if (token.type !== 3 /* Identifier */) {
	            if (this.context.strict && token.type === 4 /* Keyword */ && this.scanner.isStrictModeReservedWord(token.value)) {
	                this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);
	            }
	            else {
	                if (this.context.strict || token.value !== 'let' || kind !== 'var') {
	                    this.throwUnexpectedToken(token);
	                }
	            }
	        }
	        else if ((this.context.isModule || this.context.await) && token.type === 3 /* Identifier */ && token.value === 'await') {
	            this.tolerateUnexpectedToken(token);
	        }
	        return this.finalize(node, new Node.Identifier(token.value));
	    };
	    Parser.prototype.parseVariableDeclaration = function (options) {
	        var node = this.createNode();
	        var params = [];
	        var id = this.parsePattern(params, 'var');
	        if (this.context.strict && id.type === syntax_1.Syntax.Identifier) {
	            if (this.scanner.isRestrictedWord(id.name)) {
	                this.tolerateError(messages_1.Messages.StrictVarName);
	            }
	        }
	        var init = null;
	        if (this.match('=')) {
	            this.nextToken();
	            init = this.isolateCoverGrammar(this.parseAssignmentExpression);
	        }
	        else if (id.type !== syntax_1.Syntax.Identifier && !options.inFor) {
	            this.expect('=');
	        }
	        return this.finalize(node, new Node.VariableDeclarator(id, init));
	    };
	    Parser.prototype.parseVariableDeclarationList = function (options) {
	        var opt = { inFor: options.inFor };
	        var list = [];
	        list.push(this.parseVariableDeclaration(opt));
	        while (this.match(',')) {
	            this.nextToken();
	            list.push(this.parseVariableDeclaration(opt));
	        }
	        return list;
	    };
	    Parser.prototype.parseVariableStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('var');
	        var declarations = this.parseVariableDeclarationList({ inFor: false });
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.VariableDeclaration(declarations, 'var'));
	    };
	    // https://tc39.github.io/ecma262/#sec-empty-statement
	    Parser.prototype.parseEmptyStatement = function () {
	        var node = this.createNode();
	        this.expect(';');
	        return this.finalize(node, new Node.EmptyStatement());
	    };
	    // https://tc39.github.io/ecma262/#sec-expression-statement
	    Parser.prototype.parseExpressionStatement = function () {
	        var node = this.createNode();
	        var expr = this.parseExpression();
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.ExpressionStatement(expr));
	    };
	    // https://tc39.github.io/ecma262/#sec-if-statement
	    Parser.prototype.parseIfClause = function () {
	        if (this.context.strict && this.matchKeyword('function')) {
	            this.tolerateError(messages_1.Messages.StrictFunction);
	        }
	        return this.parseStatement();
	    };
	    Parser.prototype.parseIfStatement = function () {
	        var node = this.createNode();
	        var consequent;
	        var alternate = null;
	        this.expectKeyword('if');
	        this.expect('(');
	        var test = this.parseExpression();
	        if (!this.match(')') && this.config.tolerant) {
	            this.tolerateUnexpectedToken(this.nextToken());
	            consequent = this.finalize(this.createNode(), new Node.EmptyStatement());
	        }
	        else {
	            this.expect(')');
	            consequent = this.parseIfClause();
	            if (this.matchKeyword('else')) {
	                this.nextToken();
	                alternate = this.parseIfClause();
	            }
	        }
	        return this.finalize(node, new Node.IfStatement(test, consequent, alternate));
	    };
	    // https://tc39.github.io/ecma262/#sec-do-while-statement
	    Parser.prototype.parseDoWhileStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('do');
	        var previousInIteration = this.context.inIteration;
	        this.context.inIteration = true;
	        var body = this.parseStatement();
	        this.context.inIteration = previousInIteration;
	        this.expectKeyword('while');
	        this.expect('(');
	        var test = this.parseExpression();
	        if (!this.match(')') && this.config.tolerant) {
	            this.tolerateUnexpectedToken(this.nextToken());
	        }
	        else {
	            this.expect(')');
	            if (this.match(';')) {
	                this.nextToken();
	            }
	        }
	        return this.finalize(node, new Node.DoWhileStatement(body, test));
	    };
	    // https://tc39.github.io/ecma262/#sec-while-statement
	    Parser.prototype.parseWhileStatement = function () {
	        var node = this.createNode();
	        var body;
	        this.expectKeyword('while');
	        this.expect('(');
	        var test = this.parseExpression();
	        if (!this.match(')') && this.config.tolerant) {
	            this.tolerateUnexpectedToken(this.nextToken());
	            body = this.finalize(this.createNode(), new Node.EmptyStatement());
	        }
	        else {
	            this.expect(')');
	            var previousInIteration = this.context.inIteration;
	            this.context.inIteration = true;
	            body = this.parseStatement();
	            this.context.inIteration = previousInIteration;
	        }
	        return this.finalize(node, new Node.WhileStatement(test, body));
	    };
	    // https://tc39.github.io/ecma262/#sec-for-statement
	    // https://tc39.github.io/ecma262/#sec-for-in-and-for-of-statements
	    Parser.prototype.parseForStatement = function () {
	        var init = null;
	        var test = null;
	        var update = null;
	        var forIn = true;
	        var left, right;
	        var node = this.createNode();
	        this.expectKeyword('for');
	        this.expect('(');
	        if (this.match(';')) {
	            this.nextToken();
	        }
	        else {
	            if (this.matchKeyword('var')) {
	                init = this.createNode();
	                this.nextToken();
	                var previousAllowIn = this.context.allowIn;
	                this.context.allowIn = false;
	                var declarations = this.parseVariableDeclarationList({ inFor: true });
	                this.context.allowIn = previousAllowIn;
	                if (declarations.length === 1 && this.matchKeyword('in')) {
	                    var decl = declarations[0];
	                    if (decl.init && (decl.id.type === syntax_1.Syntax.ArrayPattern || decl.id.type === syntax_1.Syntax.ObjectPattern || this.context.strict)) {
	                        this.tolerateError(messages_1.Messages.ForInOfLoopInitializer, 'for-in');
	                    }
	                    init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));
	                    this.nextToken();
	                    left = init;
	                    right = this.parseExpression();
	                    init = null;
	                }
	                else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) {
	                    init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));
	                    this.nextToken();
	                    left = init;
	                    right = this.parseAssignmentExpression();
	                    init = null;
	                    forIn = false;
	                }
	                else {
	                    init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));
	                    this.expect(';');
	                }
	            }
	            else if (this.matchKeyword('const') || this.matchKeyword('let')) {
	                init = this.createNode();
	                var kind = this.nextToken().value;
	                if (!this.context.strict && this.lookahead.value === 'in') {
	                    init = this.finalize(init, new Node.Identifier(kind));
	                    this.nextToken();
	                    left = init;
	                    right = this.parseExpression();
	                    init = null;
	                }
	                else {
	                    var previousAllowIn = this.context.allowIn;
	                    this.context.allowIn = false;
	                    var declarations = this.parseBindingList(kind, { inFor: true });
	                    this.context.allowIn = previousAllowIn;
	                    if (declarations.length === 1 && declarations[0].init === null && this.matchKeyword('in')) {
	                        init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));
	                        this.nextToken();
	                        left = init;
	                        right = this.parseExpression();
	                        init = null;
	                    }
	                    else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) {
	                        init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));
	                        this.nextToken();
	                        left = init;
	                        right = this.parseAssignmentExpression();
	                        init = null;
	                        forIn = false;
	                    }
	                    else {
	                        this.consumeSemicolon();
	                        init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));
	                    }
	                }
	            }
	            else {
	                var initStartToken = this.lookahead;
	                var previousAllowIn = this.context.allowIn;
	                this.context.allowIn = false;
	                init = this.inheritCoverGrammar(this.parseAssignmentExpression);
	                this.context.allowIn = previousAllowIn;
	                if (this.matchKeyword('in')) {
	                    if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) {
	                        this.tolerateError(messages_1.Messages.InvalidLHSInForIn);
	                    }
	                    this.nextToken();
	                    this.reinterpretExpressionAsPattern(init);
	                    left = init;
	                    right = this.parseExpression();
	                    init = null;
	                }
	                else if (this.matchContextualKeyword('of')) {
	                    if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) {
	                        this.tolerateError(messages_1.Messages.InvalidLHSInForLoop);
	                    }
	                    this.nextToken();
	                    this.reinterpretExpressionAsPattern(init);
	                    left = init;
	                    right = this.parseAssignmentExpression();
	                    init = null;
	                    forIn = false;
	                }
	                else {
	                    if (this.match(',')) {
	                        var initSeq = [init];
	                        while (this.match(',')) {
	                            this.nextToken();
	                            initSeq.push(this.isolateCoverGrammar(this.parseAssignmentExpression));
	                        }
	                        init = this.finalize(this.startNode(initStartToken), new Node.SequenceExpression(initSeq));
	                    }
	                    this.expect(';');
	                }
	            }
	        }
	        if (typeof left === 'undefined') {
	            if (!this.match(';')) {
	                test = this.parseExpression();
	            }
	            this.expect(';');
	            if (!this.match(')')) {
	                update = this.parseExpression();
	            }
	        }
	        var body;
	        if (!this.match(')') && this.config.tolerant) {
	            this.tolerateUnexpectedToken(this.nextToken());
	            body = this.finalize(this.createNode(), new Node.EmptyStatement());
	        }
	        else {
	            this.expect(')');
	            var previousInIteration = this.context.inIteration;
	            this.context.inIteration = true;
	            body = this.isolateCoverGrammar(this.parseStatement);
	            this.context.inIteration = previousInIteration;
	        }
	        return (typeof left === 'undefined') ?
	            this.finalize(node, new Node.ForStatement(init, test, update, body)) :
	            forIn ? this.finalize(node, new Node.ForInStatement(left, right, body)) :
	                this.finalize(node, new Node.ForOfStatement(left, right, body));
	    };
	    // https://tc39.github.io/ecma262/#sec-continue-statement
	    Parser.prototype.parseContinueStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('continue');
	        var label = null;
	        if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) {
	            var id = this.parseVariableIdentifier();
	            label = id;
	            var key = '$' + id.name;
	            if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {
	                this.throwError(messages_1.Messages.UnknownLabel, id.name);
	            }
	        }
	        this.consumeSemicolon();
	        if (label === null && !this.context.inIteration) {
	            this.throwError(messages_1.Messages.IllegalContinue);
	        }
	        return this.finalize(node, new Node.ContinueStatement(label));
	    };
	    // https://tc39.github.io/ecma262/#sec-break-statement
	    Parser.prototype.parseBreakStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('break');
	        var label = null;
	        if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) {
	            var id = this.parseVariableIdentifier();
	            var key = '$' + id.name;
	            if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {
	                this.throwError(messages_1.Messages.UnknownLabel, id.name);
	            }
	            label = id;
	        }
	        this.consumeSemicolon();
	        if (label === null && !this.context.inIteration && !this.context.inSwitch) {
	            this.throwError(messages_1.Messages.IllegalBreak);
	        }
	        return this.finalize(node, new Node.BreakStatement(label));
	    };
	    // https://tc39.github.io/ecma262/#sec-return-statement
	    Parser.prototype.parseReturnStatement = function () {
	        if (!this.context.inFunctionBody) {
	            this.tolerateError(messages_1.Messages.IllegalReturn);
	        }
	        var node = this.createNode();
	        this.expectKeyword('return');
	        var hasArgument = (!this.match(';') && !this.match('}') &&
	            !this.hasLineTerminator && this.lookahead.type !== 2 /* EOF */) ||
	            this.lookahead.type === 8 /* StringLiteral */ ||
	            this.lookahead.type === 10 /* Template */;
	        var argument = hasArgument ? this.parseExpression() : null;
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.ReturnStatement(argument));
	    };
	    // https://tc39.github.io/ecma262/#sec-with-statement
	    Parser.prototype.parseWithStatement = function () {
	        if (this.context.strict) {
	            this.tolerateError(messages_1.Messages.StrictModeWith);
	        }
	        var node = this.createNode();
	        var body;
	        this.expectKeyword('with');
	        this.expect('(');
	        var object = this.parseExpression();
	        if (!this.match(')') && this.config.tolerant) {
	            this.tolerateUnexpectedToken(this.nextToken());
	            body = this.finalize(this.createNode(), new Node.EmptyStatement());
	        }
	        else {
	            this.expect(')');
	            body = this.parseStatement();
	        }
	        return this.finalize(node, new Node.WithStatement(object, body));
	    };
	    // https://tc39.github.io/ecma262/#sec-switch-statement
	    Parser.prototype.parseSwitchCase = function () {
	        var node = this.createNode();
	        var test;
	        if (this.matchKeyword('default')) {
	            this.nextToken();
	            test = null;
	        }
	        else {
	            this.expectKeyword('case');
	            test = this.parseExpression();
	        }
	        this.expect(':');
	        var consequent = [];
	        while (true) {
	            if (this.match('}') || this.matchKeyword('default') || this.matchKeyword('case')) {
	                break;
	            }
	            consequent.push(this.parseStatementListItem());
	        }
	        return this.finalize(node, new Node.SwitchCase(test, consequent));
	    };
	    Parser.prototype.parseSwitchStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('switch');
	        this.expect('(');
	        var discriminant = this.parseExpression();
	        this.expect(')');
	        var previousInSwitch = this.context.inSwitch;
	        this.context.inSwitch = true;
	        var cases = [];
	        var defaultFound = false;
	        this.expect('{');
	        while (true) {
	            if (this.match('}')) {
	                break;
	            }
	            var clause = this.parseSwitchCase();
	            if (clause.test === null) {
	                if (defaultFound) {
	                    this.throwError(messages_1.Messages.MultipleDefaultsInSwitch);
	                }
	                defaultFound = true;
	            }
	            cases.push(clause);
	        }
	        this.expect('}');
	        this.context.inSwitch = previousInSwitch;
	        return this.finalize(node, new Node.SwitchStatement(discriminant, cases));
	    };
	    // https://tc39.github.io/ecma262/#sec-labelled-statements
	    Parser.prototype.parseLabelledStatement = function () {
	        var node = this.createNode();
	        var expr = this.parseExpression();
	        var statement;
	        if ((expr.type === syntax_1.Syntax.Identifier) && this.match(':')) {
	            this.nextToken();
	            var id = expr;
	            var key = '$' + id.name;
	            if (Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {
	                this.throwError(messages_1.Messages.Redeclaration, 'Label', id.name);
	            }
	            this.context.labelSet[key] = true;
	            var body = void 0;
	            if (this.matchKeyword('class')) {
	                this.tolerateUnexpectedToken(this.lookahead);
	                body = this.parseClassDeclaration();
	            }
	            else if (this.matchKeyword('function')) {
	                var token = this.lookahead;
	                var declaration = this.parseFunctionDeclaration();
	                if (this.context.strict) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunction);
	                }
	                else if (declaration.generator) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.GeneratorInLegacyContext);
	                }
	                body = declaration;
	            }
	            else {
	                body = this.parseStatement();
	            }
	            delete this.context.labelSet[key];
	            statement = new Node.LabeledStatement(id, body);
	        }
	        else {
	            this.consumeSemicolon();
	            statement = new Node.ExpressionStatement(expr);
	        }
	        return this.finalize(node, statement);
	    };
	    // https://tc39.github.io/ecma262/#sec-throw-statement
	    Parser.prototype.parseThrowStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('throw');
	        if (this.hasLineTerminator) {
	            this.throwError(messages_1.Messages.NewlineAfterThrow);
	        }
	        var argument = this.parseExpression();
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.ThrowStatement(argument));
	    };
	    // https://tc39.github.io/ecma262/#sec-try-statement
	    Parser.prototype.parseCatchClause = function () {
	        var node = this.createNode();
	        this.expectKeyword('catch');
	        this.expect('(');
	        if (this.match(')')) {
	            this.throwUnexpectedToken(this.lookahead);
	        }
	        var params = [];
	        var param = this.parsePattern(params);
	        var paramMap = {};
	        for (var i = 0; i < params.length; i++) {
	            var key = '$' + params[i].value;
	            if (Object.prototype.hasOwnProperty.call(paramMap, key)) {
	                this.tolerateError(messages_1.Messages.DuplicateBinding, params[i].value);
	            }
	            paramMap[key] = true;
	        }
	        if (this.context.strict && param.type === syntax_1.Syntax.Identifier) {
	            if (this.scanner.isRestrictedWord(param.name)) {
	                this.tolerateError(messages_1.Messages.StrictCatchVariable);
	            }
	        }
	        this.expect(')');
	        var body = this.parseBlock();
	        return this.finalize(node, new Node.CatchClause(param, body));
	    };
	    Parser.prototype.parseFinallyClause = function () {
	        this.expectKeyword('finally');
	        return this.parseBlock();
	    };
	    Parser.prototype.parseTryStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('try');
	        var block = this.parseBlock();
	        var handler = this.matchKeyword('catch') ? this.parseCatchClause() : null;
	        var finalizer = this.matchKeyword('finally') ? this.parseFinallyClause() : null;
	        if (!handler && !finalizer) {
	            this.throwError(messages_1.Messages.NoCatchOrFinally);
	        }
	        return this.finalize(node, new Node.TryStatement(block, handler, finalizer));
	    };
	    // https://tc39.github.io/ecma262/#sec-debugger-statement
	    Parser.prototype.parseDebuggerStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('debugger');
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.DebuggerStatement());
	    };
	    // https://tc39.github.io/ecma262/#sec-ecmascript-language-statements-and-declarations
	    Parser.prototype.parseStatement = function () {
	        var statement;
	        switch (this.lookahead.type) {
	            case 1 /* BooleanLiteral */:
	            case 5 /* NullLiteral */:
	            case 6 /* NumericLiteral */:
	            case 8 /* StringLiteral */:
	            case 10 /* Template */:
	            case 9 /* RegularExpression */:
	                statement = this.parseExpressionStatement();
	                break;
	            case 7 /* Punctuator */:
	                var value = this.lookahead.value;
	                if (value === '{') {
	                    statement = this.parseBlock();
	                }
	                else if (value === '(') {
	                    statement = this.parseExpressionStatement();
	                }
	                else if (value === ';') {
	                    statement = this.parseEmptyStatement();
	                }
	                else {
	                    statement = this.parseExpressionStatement();
	                }
	                break;
	            case 3 /* Identifier */:
	                statement = this.matchAsyncFunction() ? this.parseFunctionDeclaration() : this.parseLabelledStatement();
	                break;
	            case 4 /* Keyword */:
	                switch (this.lookahead.value) {
	                    case 'break':
	                        statement = this.parseBreakStatement();
	                        break;
	                    case 'continue':
	                        statement = this.parseContinueStatement();
	                        break;
	                    case 'debugger':
	                        statement = this.parseDebuggerStatement();
	                        break;
	                    case 'do':
	                        statement = this.parseDoWhileStatement();
	                        break;
	                    case 'for':
	                        statement = this.parseForStatement();
	                        break;
	                    case 'function':
	                        statement = this.parseFunctionDeclaration();
	                        break;
	                    case 'if':
	                        statement = this.parseIfStatement();
	                        break;
	                    case 'return':
	                        statement = this.parseReturnStatement();
	                        break;
	                    case 'switch':
	                        statement = this.parseSwitchStatement();
	                        break;
	                    case 'throw':
	                        statement = this.parseThrowStatement();
	                        break;
	                    case 'try':
	                        statement = this.parseTryStatement();
	                        break;
	                    case 'var':
	                        statement = this.parseVariableStatement();
	                        break;
	                    case 'while':
	                        statement = this.parseWhileStatement();
	                        break;
	                    case 'with':
	                        statement = this.parseWithStatement();
	                        break;
	                    default:
	                        statement = this.parseExpressionStatement();
	                        break;
	                }
	                break;
	            default:
	                statement = this.throwUnexpectedToken(this.lookahead);
	        }
	        return statement;
	    };
	    // https://tc39.github.io/ecma262/#sec-function-definitions
	    Parser.prototype.parseFunctionSourceElements = function () {
	        var node = this.createNode();
	        this.expect('{');
	        var body = this.parseDirectivePrologues();
	        var previousLabelSet = this.context.labelSet;
	        var previousInIteration = this.context.inIteration;
	        var previousInSwitch = this.context.inSwitch;
	        var previousInFunctionBody = this.context.inFunctionBody;
	        this.context.labelSet = {};
	        this.context.inIteration = false;
	        this.context.inSwitch = false;
	        this.context.inFunctionBody = true;
	        while (this.lookahead.type !== 2 /* EOF */) {
	            if (this.match('}')) {
	                break;
	            }
	            body.push(this.parseStatementListItem());
	        }
	        this.expect('}');
	        this.context.labelSet = previousLabelSet;
	        this.context.inIteration = previousInIteration;
	        this.context.inSwitch = previousInSwitch;
	        this.context.inFunctionBody = previousInFunctionBody;
	        return this.finalize(node, new Node.BlockStatement(body));
	    };
	    Parser.prototype.validateParam = function (options, param, name) {
	        var key = '$' + name;
	        if (this.context.strict) {
	            if (this.scanner.isRestrictedWord(name)) {
	                options.stricted = param;
	                options.message = messages_1.Messages.StrictParamName;
	            }
	            if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
	                options.stricted = param;
	                options.message = messages_1.Messages.StrictParamDupe;
	            }
	        }
	        else if (!options.firstRestricted) {
	            if (this.scanner.isRestrictedWord(name)) {
	                options.firstRestricted = param;
	                options.message = messages_1.Messages.StrictParamName;
	            }
	            else if (this.scanner.isStrictModeReservedWord(name)) {
	                options.firstRestricted = param;
	                options.message = messages_1.Messages.StrictReservedWord;
	            }
	            else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
	                options.stricted = param;
	                options.message = messages_1.Messages.StrictParamDupe;
	            }
	        }
	        /* istanbul ignore next */
	        if (typeof Object.defineProperty === 'function') {
	            Object.defineProperty(options.paramSet, key, { value: true, enumerable: true, writable: true, configurable: true });
	        }
	        else {
	            options.paramSet[key] = true;
	        }
	    };
	    Parser.prototype.parseRestElement = function (params) {
	        var node = this.createNode();
	        this.expect('...');
	        var arg = this.parsePattern(params);
	        if (this.match('=')) {
	            this.throwError(messages_1.Messages.DefaultRestParameter);
	        }
	        if (!this.match(')')) {
	            this.throwError(messages_1.Messages.ParameterAfterRestParameter);
	        }
	        return this.finalize(node, new Node.RestElement(arg));
	    };
	    Parser.prototype.parseFormalParameter = function (options) {
	        var params = [];
	        var param = this.match('...') ? this.parseRestElement(params) : this.parsePatternWithDefault(params);
	        for (var i = 0; i < params.length; i++) {
	            this.validateParam(options, params[i], params[i].value);
	        }
	        options.simple = options.simple && (param instanceof Node.Identifier);
	        options.params.push(param);
	    };
	    Parser.prototype.parseFormalParameters = function (firstRestricted) {
	        var options;
	        options = {
	            simple: true,
	            params: [],
	            firstRestricted: firstRestricted
	        };
	        this.expect('(');
	        if (!this.match(')')) {
	            options.paramSet = {};
	            while (this.lookahead.type !== 2 /* EOF */) {
	                this.parseFormalParameter(options);
	                if (this.match(')')) {
	                    break;
	                }
	                this.expect(',');
	                if (this.match(')')) {
	                    break;
	                }
	            }
	        }
	        this.expect(')');
	        return {
	            simple: options.simple,
	            params: options.params,
	            stricted: options.stricted,
	            firstRestricted: options.firstRestricted,
	            message: options.message
	        };
	    };
	    Parser.prototype.matchAsyncFunction = function () {
	        var match = this.matchContextualKeyword('async');
	        if (match) {
	            var state = this.scanner.saveState();
	            this.scanner.scanComments();
	            var next = this.scanner.lex();
	            this.scanner.restoreState(state);
	            match = (state.lineNumber === next.lineNumber) && (next.type === 4 /* Keyword */) && (next.value === 'function');
	        }
	        return match;
	    };
	    Parser.prototype.parseFunctionDeclaration = function (identifierIsOptional) {
	        var node = this.createNode();
	        var isAsync = this.matchContextualKeyword('async');
	        if (isAsync) {
	            this.nextToken();
	        }
	        this.expectKeyword('function');
	        var isGenerator = isAsync ? false : this.match('*');
	        if (isGenerator) {
	            this.nextToken();
	        }
	        var message;
	        var id = null;
	        var firstRestricted = null;
	        if (!identifierIsOptional || !this.match('(')) {
	            var token = this.lookahead;
	            id = this.parseVariableIdentifier();
	            if (this.context.strict) {
	                if (this.scanner.isRestrictedWord(token.value)) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName);
	                }
	            }
	            else {
	                if (this.scanner.isRestrictedWord(token.value)) {
	                    firstRestricted = token;
	                    message = messages_1.Messages.StrictFunctionName;
	                }
	                else if (this.scanner.isStrictModeReservedWord(token.value)) {
	                    firstRestricted = token;
	                    message = messages_1.Messages.StrictReservedWord;
	                }
	            }
	        }
	        var previousAllowAwait = this.context.await;
	        var previousAllowYield = this.context.allowYield;
	        this.context.await = isAsync;
	        this.context.allowYield = !isGenerator;
	        var formalParameters = this.parseFormalParameters(firstRestricted);
	        var params = formalParameters.params;
	        var stricted = formalParameters.stricted;
	        firstRestricted = formalParameters.firstRestricted;
	        if (formalParameters.message) {
	            message = formalParameters.message;
	        }
	        var previousStrict = this.context.strict;
	        var previousAllowStrictDirective = this.context.allowStrictDirective;
	        this.context.allowStrictDirective = formalParameters.simple;
	        var body = this.parseFunctionSourceElements();
	        if (this.context.strict && firstRestricted) {
	            this.throwUnexpectedToken(firstRestricted, message);
	        }
	        if (this.context.strict && stricted) {
	            this.tolerateUnexpectedToken(stricted, message);
	        }
	        this.context.strict = previousStrict;
	        this.context.allowStrictDirective = previousAllowStrictDirective;
	        this.context.await = previousAllowAwait;
	        this.context.allowYield = previousAllowYield;
	        return isAsync ? this.finalize(node, new Node.AsyncFunctionDeclaration(id, params, body)) :
	            this.finalize(node, new Node.FunctionDeclaration(id, params, body, isGenerator));
	    };
	    Parser.prototype.parseFunctionExpression = function () {
	        var node = this.createNode();
	        var isAsync = this.matchContextualKeyword('async');
	        if (isAsync) {
	            this.nextToken();
	        }
	        this.expectKeyword('function');
	        var isGenerator = isAsync ? false : this.match('*');
	        if (isGenerator) {
	            this.nextToken();
	        }
	        var message;
	        var id = null;
	        var firstRestricted;
	        var previousAllowAwait = this.context.await;
	        var previousAllowYield = this.context.allowYield;
	        this.context.await = isAsync;
	        this.context.allowYield = !isGenerator;
	        if (!this.match('(')) {
	            var token = this.lookahead;
	            id = (!this.context.strict && !isGenerator && this.matchKeyword('yield')) ? this.parseIdentifierName() : this.parseVariableIdentifier();
	            if (this.context.strict) {
	                if (this.scanner.isRestrictedWord(token.value)) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName);
	                }
	            }
	            else {
	                if (this.scanner.isRestrictedWord(token.value)) {
	                    firstRestricted = token;
	                    message = messages_1.Messages.StrictFunctionName;
	                }
	                else if (this.scanner.isStrictModeReservedWord(token.value)) {
	                    firstRestricted = token;
	                    message = messages_1.Messages.StrictReservedWord;
	                }
	            }
	        }
	        var formalParameters = this.parseFormalParameters(firstRestricted);
	        var params = formalParameters.params;
	        var stricted = formalParameters.stricted;
	        firstRestricted = formalParameters.firstRestricted;
	        if (formalParameters.message) {
	            message = formalParameters.message;
	        }
	        var previousStrict = this.context.strict;
	        var previousAllowStrictDirective = this.context.allowStrictDirective;
	        this.context.allowStrictDirective = formalParameters.simple;
	        var body = this.parseFunctionSourceElements();
	        if (this.context.strict && firstRestricted) {
	            this.throwUnexpectedToken(firstRestricted, message);
	        }
	        if (this.context.strict && stricted) {
	            this.tolerateUnexpectedToken(stricted, message);
	        }
	        this.context.strict = previousStrict;
	        this.context.allowStrictDirective = previousAllowStrictDirective;
	        this.context.await = previousAllowAwait;
	        this.context.allowYield = previousAllowYield;
	        return isAsync ? this.finalize(node, new Node.AsyncFunctionExpression(id, params, body)) :
	            this.finalize(node, new Node.FunctionExpression(id, params, body, isGenerator));
	    };
	    // https://tc39.github.io/ecma262/#sec-directive-prologues-and-the-use-strict-directive
	    Parser.prototype.parseDirective = function () {
	        var token = this.lookahead;
	        var node = this.createNode();
	        var expr = this.parseExpression();
	        var directive = (expr.type === syntax_1.Syntax.Literal) ? this.getTokenRaw(token).slice(1, -1) : null;
	        this.consumeSemicolon();
	        return this.finalize(node, directive ? new Node.Directive(expr, directive) : new Node.ExpressionStatement(expr));
	    };
	    Parser.prototype.parseDirectivePrologues = function () {
	        var firstRestricted = null;
	        var body = [];
	        while (true) {
	            var token = this.lookahead;
	            if (token.type !== 8 /* StringLiteral */) {
	                break;
	            }
	            var statement = this.parseDirective();
	            body.push(statement);
	            var directive = statement.directive;
	            if (typeof directive !== 'string') {
	                break;
	            }
	            if (directive === 'use strict') {
	                this.context.strict = true;
	                if (firstRestricted) {
	                    this.tolerateUnexpectedToken(firstRestricted, messages_1.Messages.StrictOctalLiteral);
	                }
	                if (!this.context.allowStrictDirective) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.IllegalLanguageModeDirective);
	                }
	            }
	            else {
	                if (!firstRestricted && token.octal) {
	                    firstRestricted = token;
	                }
	            }
	        }
	        return body;
	    };
	    // https://tc39.github.io/ecma262/#sec-method-definitions
	    Parser.prototype.qualifiedPropertyName = function (token) {
	        switch (token.type) {
	            case 3 /* Identifier */:
	            case 8 /* StringLiteral */:
	            case 1 /* BooleanLiteral */:
	            case 5 /* NullLiteral */:
	            case 6 /* NumericLiteral */:
	            case 4 /* Keyword */:
	                return true;
	            case 7 /* Punctuator */:
	                return token.value === '[';
	            default:
	                break;
	        }
	        return false;
	    };
	    Parser.prototype.parseGetterMethod = function () {
	        var node = this.createNode();
	        var isGenerator = false;
	        var previousAllowYield = this.context.allowYield;
	        this.context.allowYield = !isGenerator;
	        var formalParameters = this.parseFormalParameters();
	        if (formalParameters.params.length > 0) {
	            this.tolerateError(messages_1.Messages.BadGetterArity);
	        }
	        var method = this.parsePropertyMethod(formalParameters);
	        this.context.allowYield = previousAllowYield;
	        return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator));
	    };
	    Parser.prototype.parseSetterMethod = function () {
	        var node = this.createNode();
	        var isGenerator = false;
	        var previousAllowYield = this.context.allowYield;
	        this.context.allowYield = !isGenerator;
	        var formalParameters = this.parseFormalParameters();
	        if (formalParameters.params.length !== 1) {
	            this.tolerateError(messages_1.Messages.BadSetterArity);
	        }
	        else if (formalParameters.params[0] instanceof Node.RestElement) {
	            this.tolerateError(messages_1.Messages.BadSetterRestParameter);
	        }
	        var method = this.parsePropertyMethod(formalParameters);
	        this.context.allowYield = previousAllowYield;
	        return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator));
	    };
	    Parser.prototype.parseGeneratorMethod = function () {
	        var node = this.createNode();
	        var isGenerator = true;
	        var previousAllowYield = this.context.allowYield;
	        this.context.allowYield = true;
	        var params = this.parseFormalParameters();
	        this.context.allowYield = false;
	        var method = this.parsePropertyMethod(params);
	        this.context.allowYield = previousAllowYield;
	        return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator));
	    };
	    // https://tc39.github.io/ecma262/#sec-generator-function-definitions
	    Parser.prototype.isStartOfExpression = function () {
	        var start = true;
	        var value = this.lookahead.value;
	        switch (this.lookahead.type) {
	            case 7 /* Punctuator */:
	                start = (value === '[') || (value === '(') || (value === '{') ||
	                    (value === '+') || (value === '-') ||
	                    (value === '!') || (value === '~') ||
	                    (value === '++') || (value === '--') ||
	                    (value === '/') || (value === '/='); // regular expression literal
	                break;
	            case 4 /* Keyword */:
	                start = (value === 'class') || (value === 'delete') ||
	                    (value === 'function') || (value === 'let') || (value === 'new') ||
	                    (value === 'super') || (value === 'this') || (value === 'typeof') ||
	                    (value === 'void') || (value === 'yield');
	                break;
	            default:
	                break;
	        }
	        return start;
	    };
	    Parser.prototype.parseYieldExpression = function () {
	        var node = this.createNode();
	        this.expectKeyword('yield');
	        var argument = null;
	        var delegate = false;
	        if (!this.hasLineTerminator) {
	            var previousAllowYield = this.context.allowYield;
	            this.context.allowYield = false;
	            delegate = this.match('*');
	            if (delegate) {
	                this.nextToken();
	                argument = this.parseAssignmentExpression();
	            }
	            else if (this.isStartOfExpression()) {
	                argument = this.parseAssignmentExpression();
	            }
	            this.context.allowYield = previousAllowYield;
	        }
	        return this.finalize(node, new Node.YieldExpression(argument, delegate));
	    };
	    // https://tc39.github.io/ecma262/#sec-class-definitions
	    Parser.prototype.parseClassElement = function (hasConstructor) {
	        var token = this.lookahead;
	        var node = this.createNode();
	        var kind = '';
	        var key = null;
	        var value = null;
	        var computed = false;
	        var method = false;
	        var isStatic = false;
	        var isAsync = false;
	        if (this.match('*')) {
	            this.nextToken();
	        }
	        else {
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            var id = key;
	            if (id.name === 'static' && (this.qualifiedPropertyName(this.lookahead) || this.match('*'))) {
	                token = this.lookahead;
	                isStatic = true;
	                computed = this.match('[');
	                if (this.match('*')) {
	                    this.nextToken();
	                }
	                else {
	                    key = this.parseObjectPropertyKey();
	                }
	            }
	            if ((token.type === 3 /* Identifier */) && !this.hasLineTerminator && (token.value === 'async')) {
	                var punctuator = this.lookahead.value;
	                if (punctuator !== ':' && punctuator !== '(' && punctuator !== '*') {
	                    isAsync = true;
	                    token = this.lookahead;
	                    key = this.parseObjectPropertyKey();
	                    if (token.type === 3 /* Identifier */ && token.value === 'constructor') {
	                        this.tolerateUnexpectedToken(token, messages_1.Messages.ConstructorIsAsync);
	                    }
	                }
	            }
	        }
	        var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead);
	        if (token.type === 3 /* Identifier */) {
	            if (token.value === 'get' && lookaheadPropertyKey) {
	                kind = 'get';
	                computed = this.match('[');
	                key = this.parseObjectPropertyKey();
	                this.context.allowYield = false;
	                value = this.parseGetterMethod();
	            }
	            else if (token.value === 'set' && lookaheadPropertyKey) {
	                kind = 'set';
	                computed = this.match('[');
	                key = this.parseObjectPropertyKey();
	                value = this.parseSetterMethod();
	            }
	        }
	        else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) {
	            kind = 'init';
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            value = this.parseGeneratorMethod();
	            method = true;
	        }
	        if (!kind && key && this.match('(')) {
	            kind = 'init';
	            value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction();
	            method = true;
	        }
	        if (!kind) {
	            this.throwUnexpectedToken(this.lookahead);
	        }
	        if (kind === 'init') {
	            kind = 'method';
	        }
	        if (!computed) {
	            if (isStatic && this.isPropertyKey(key, 'prototype')) {
	                this.throwUnexpectedToken(token, messages_1.Messages.StaticPrototype);
	            }
	            if (!isStatic && this.isPropertyKey(key, 'constructor')) {
	                if (kind !== 'method' || !method || (value && value.generator)) {
	                    this.throwUnexpectedToken(token, messages_1.Messages.ConstructorSpecialMethod);
	                }
	                if (hasConstructor.value) {
	                    this.throwUnexpectedToken(token, messages_1.Messages.DuplicateConstructor);
	                }
	                else {
	                    hasConstructor.value = true;
	                }
	                kind = 'constructor';
	            }
	        }
	        return this.finalize(node, new Node.MethodDefinition(key, computed, value, kind, isStatic));
	    };
	    Parser.prototype.parseClassElementList = function () {
	        var body = [];
	        var hasConstructor = { value: false };
	        this.expect('{');
	        while (!this.match('}')) {
	            if (this.match(';')) {
	                this.nextToken();
	            }
	            else {
	                body.push(this.parseClassElement(hasConstructor));
	            }
	        }
	        this.expect('}');
	        return body;
	    };
	    Parser.prototype.parseClassBody = function () {
	        var node = this.createNode();
	        var elementList = this.parseClassElementList();
	        return this.finalize(node, new Node.ClassBody(elementList));
	    };
	    Parser.prototype.parseClassDeclaration = function (identifierIsOptional) {
	        var node = this.createNode();
	        var previousStrict = this.context.strict;
	        this.context.strict = true;
	        this.expectKeyword('class');
	        var id = (identifierIsOptional && (this.lookahead.type !== 3 /* Identifier */)) ? null : this.parseVariableIdentifier();
	        var superClass = null;
	        if (this.matchKeyword('extends')) {
	            this.nextToken();
	            superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);
	        }
	        var classBody = this.parseClassBody();
	        this.context.strict = previousStrict;
	        return this.finalize(node, new Node.ClassDeclaration(id, superClass, classBody));
	    };
	    Parser.prototype.parseClassExpression = function () {
	        var node = this.createNode();
	        var previousStrict = this.context.strict;
	        this.context.strict = true;
	        this.expectKeyword('class');
	        var id = (this.lookahead.type === 3 /* Identifier */) ? this.parseVariableIdentifier() : null;
	        var superClass = null;
	        if (this.matchKeyword('extends')) {
	            this.nextToken();
	            superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);
	        }
	        var classBody = this.parseClassBody();
	        this.context.strict = previousStrict;
	        return this.finalize(node, new Node.ClassExpression(id, superClass, classBody));
	    };
	    // https://tc39.github.io/ecma262/#sec-scripts
	    // https://tc39.github.io/ecma262/#sec-modules
	    Parser.prototype.parseModule = function () {
	        this.context.strict = true;
	        this.context.isModule = true;
	        this.scanner.isModule = true;
	        var node = this.createNode();
	        var body = this.parseDirectivePrologues();
	        while (this.lookahead.type !== 2 /* EOF */) {
	            body.push(this.parseStatementListItem());
	        }
	        return this.finalize(node, new Node.Module(body));
	    };
	    Parser.prototype.parseScript = function () {
	        var node = this.createNode();
	        var body = this.parseDirectivePrologues();
	        while (this.lookahead.type !== 2 /* EOF */) {
	            body.push(this.parseStatementListItem());
	        }
	        return this.finalize(node, new Node.Script(body));
	    };
	    // https://tc39.github.io/ecma262/#sec-imports
	    Parser.prototype.parseModuleSpecifier = function () {
	        var node = this.createNode();
	        if (this.lookahead.type !== 8 /* StringLiteral */) {
	            this.throwError(messages_1.Messages.InvalidModuleSpecifier);
	        }
	        var token = this.nextToken();
	        var raw = this.getTokenRaw(token);
	        return this.finalize(node, new Node.Literal(token.value, raw));
	    };
	    // import {<foo as bar>} ...;
	    Parser.prototype.parseImportSpecifier = function () {
	        var node = this.createNode();
	        var imported;
	        var local;
	        if (this.lookahead.type === 3 /* Identifier */) {
	            imported = this.parseVariableIdentifier();
	            local = imported;
	            if (this.matchContextualKeyword('as')) {
	                this.nextToken();
	                local = this.parseVariableIdentifier();
	            }
	        }
	        else {
	            imported = this.parseIdentifierName();
	            local = imported;
	            if (this.matchContextualKeyword('as')) {
	                this.nextToken();
	                local = this.parseVariableIdentifier();
	            }
	            else {
	                this.throwUnexpectedToken(this.nextToken());
	            }
	        }
	        return this.finalize(node, new Node.ImportSpecifier(local, imported));
	    };
	    // {foo, bar as bas}
	    Parser.prototype.parseNamedImports = function () {
	        this.expect('{');
	        var specifiers = [];
	        while (!this.match('}')) {
	            specifiers.push(this.parseImportSpecifier());
	            if (!this.match('}')) {
	                this.expect(',');
	            }
	        }
	        this.expect('}');
	        return specifiers;
	    };
	    // import <foo> ...;
	    Parser.prototype.parseImportDefaultSpecifier = function () {
	        var node = this.createNode();
	        var local = this.parseIdentifierName();
	        return this.finalize(node, new Node.ImportDefaultSpecifier(local));
	    };
	    // import <* as foo> ...;
	    Parser.prototype.parseImportNamespaceSpecifier = function () {
	        var node = this.createNode();
	        this.expect('*');
	        if (!this.matchContextualKeyword('as')) {
	            this.throwError(messages_1.Messages.NoAsAfterImportNamespace);
	        }
	        this.nextToken();
	        var local = this.parseIdentifierName();
	        return this.finalize(node, new Node.ImportNamespaceSpecifier(local));
	    };
	    Parser.prototype.parseImportDeclaration = function () {
	        if (this.context.inFunctionBody) {
	            this.throwError(messages_1.Messages.IllegalImportDeclaration);
	        }
	        var node = this.createNode();
	        this.expectKeyword('import');
	        var src;
	        var specifiers = [];
	        if (this.lookahead.type === 8 /* StringLiteral */) {
	            // import 'foo';
	            src = this.parseModuleSpecifier();
	        }
	        else {
	            if (this.match('{')) {
	                // import {bar}
	                specifiers = specifiers.concat(this.parseNamedImports());
	            }
	            else if (this.match('*')) {
	                // import * as foo
	                specifiers.push(this.parseImportNamespaceSpecifier());
	            }
	            else if (this.isIdentifierName(this.lookahead) && !this.matchKeyword('default')) {
	                // import foo
	                specifiers.push(this.parseImportDefaultSpecifier());
	                if (this.match(',')) {
	                    this.nextToken();
	                    if (this.match('*')) {
	                        // import foo, * as foo
	                        specifiers.push(this.parseImportNamespaceSpecifier());
	                    }
	                    else if (this.match('{')) {
	                        // import foo, {bar}
	                        specifiers = specifiers.concat(this.parseNamedImports());
	                    }
	                    else {
	                        this.throwUnexpectedToken(this.lookahead);
	                    }
	                }
	            }
	            else {
	                this.throwUnexpectedToken(this.nextToken());
	            }
	            if (!this.matchContextualKeyword('from')) {
	                var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;
	                this.throwError(message, this.lookahead.value);
	            }
	            this.nextToken();
	            src = this.parseModuleSpecifier();
	        }
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.ImportDeclaration(specifiers, src));
	    };
	    // https://tc39.github.io/ecma262/#sec-exports
	    Parser.prototype.parseExportSpecifier = function () {
	        var node = this.createNode();
	        var local = this.parseIdentifierName();
	        var exported = local;
	        if (this.matchContextualKeyword('as')) {
	            this.nextToken();
	            exported = this.parseIdentifierName();
	        }
	        return this.finalize(node, new Node.ExportSpecifier(local, exported));
	    };
	    Parser.prototype.parseExportDeclaration = function () {
	        if (this.context.inFunctionBody) {
	            this.throwError(messages_1.Messages.IllegalExportDeclaration);
	        }
	        var node = this.createNode();
	        this.expectKeyword('export');
	        var exportDeclaration;
	        if (this.matchKeyword('default')) {
	            // export default ...
	            this.nextToken();
	            if (this.matchKeyword('function')) {
	                // export default function foo () {}
	                // export default function () {}
	                var declaration = this.parseFunctionDeclaration(true);
	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
	            }
	            else if (this.matchKeyword('class')) {
	                // export default class foo {}
	                var declaration = this.parseClassDeclaration(true);
	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
	            }
	            else if (this.matchContextualKeyword('async')) {
	                // export default async function f () {}
	                // export default async function () {}
	                // export default async x => x
	                var declaration = this.matchAsyncFunction() ? this.parseFunctionDeclaration(true) : this.parseAssignmentExpression();
	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
	            }
	            else {
	                if (this.matchContextualKeyword('from')) {
	                    this.throwError(messages_1.Messages.UnexpectedToken, this.lookahead.value);
	                }
	                // export default {};
	                // export default [];
	                // export default (1 + 2);
	                var declaration = this.match('{') ? this.parseObjectInitializer() :
	                    this.match('[') ? this.parseArrayInitializer() : this.parseAssignmentExpression();
	                this.consumeSemicolon();
	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
	            }
	        }
	        else if (this.match('*')) {
	            // export * from 'foo';
	            this.nextToken();
	            if (!this.matchContextualKeyword('from')) {
	                var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;
	                this.throwError(message, this.lookahead.value);
	            }
	            this.nextToken();
	            var src = this.parseModuleSpecifier();
	            this.consumeSemicolon();
	            exportDeclaration = this.finalize(node, new Node.ExportAllDeclaration(src));
	        }
	        else if (this.lookahead.type === 4 /* Keyword */) {
	            // export var f = 1;
	            var declaration = void 0;
	            switch (this.lookahead.value) {
	                case 'let':
	                case 'const':
	                    declaration = this.parseLexicalDeclaration({ inFor: false });
	                    break;
	                case 'var':
	                case 'class':
	                case 'function':
	                    declaration = this.parseStatementListItem();
	                    break;
	                default:
	                    this.throwUnexpectedToken(this.lookahead);
	            }
	            exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null));
	        }
	        else if (this.matchAsyncFunction()) {
	            var declaration = this.parseFunctionDeclaration();
	            exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null));
	        }
	        else {
	            var specifiers = [];
	            var source = null;
	            var isExportFromIdentifier = false;
	            this.expect('{');
	            while (!this.match('}')) {
	                isExportFromIdentifier = isExportFromIdentifier || this.matchKeyword('default');
	                specifiers.push(this.parseExportSpecifier());
	                if (!this.match('}')) {
	                    this.expect(',');
	                }
	            }
	            this.expect('}');
	            if (this.matchContextualKeyword('from')) {
	                // export {default} from 'foo';
	                // export {foo} from 'foo';
	                this.nextToken();
	                source = this.parseModuleSpecifier();
	                this.consumeSemicolon();
	            }
	            else if (isExportFromIdentifier) {
	                // export {default}; // missing fromClause
	                var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;
	                this.throwError(message, this.lookahead.value);
	            }
	            else {
	                // export {foo};
	                this.consumeSemicolon();
	            }
	            exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(null, specifiers, source));
	        }
	        return exportDeclaration;
	    };
	    return Parser;
	}());
	exports.Parser = Parser;


/***/ },
/* 9 */
/***/ function(module, exports) {

	"use strict";
	// Ensure the condition is true, otherwise throw an error.
	// This is only to have a better contract semantic, i.e. another safety net
	// to catch a logic error. The condition shall be fulfilled in normal case.
	// Do NOT use this to enforce a certain condition on any user input.
	Object.defineProperty(exports, "__esModule", { value: true });
	function assert(condition, message) {
	    /* istanbul ignore if */
	    if (!condition) {
	        throw new Error('ASSERT: ' + message);
	    }
	}
	exports.assert = assert;


/***/ },
/* 10 */
/***/ function(module, exports) {

	"use strict";
	/* tslint:disable:max-classes-per-file */
	Object.defineProperty(exports, "__esModule", { value: true });
	var ErrorHandler = (function () {
	    function ErrorHandler() {
	        this.errors = [];
	        this.tolerant = false;
	    }
	    ErrorHandler.prototype.recordError = function (error) {
	        this.errors.push(error);
	    };
	    ErrorHandler.prototype.tolerate = function (error) {
	        if (this.tolerant) {
	            this.recordError(error);
	        }
	        else {
	            throw error;
	        }
	    };
	    ErrorHandler.prototype.constructError = function (msg, column) {
	        var error = new Error(msg);
	        try {
	            throw error;
	        }
	        catch (base) {
	            /* istanbul ignore else */
	            if (Object.create && Object.defineProperty) {
	                error = Object.create(base);
	                Object.defineProperty(error, 'column', { value: column });
	            }
	        }
	        /* istanbul ignore next */
	        return error;
	    };
	    ErrorHandler.prototype.createError = function (index, line, col, description) {
	        var msg = 'Line ' + line + ': ' + description;
	        var error = this.constructError(msg, col);
	        error.index = index;
	        error.lineNumber = line;
	        error.description = description;
	        return error;
	    };
	    ErrorHandler.prototype.throwError = function (index, line, col, description) {
	        throw this.createError(index, line, col, description);
	    };
	    ErrorHandler.prototype.tolerateError = function (index, line, col, description) {
	        var error = this.createError(index, line, col, description);
	        if (this.tolerant) {
	            this.recordError(error);
	        }
	        else {
	            throw error;
	        }
	    };
	    return ErrorHandler;
	}());
	exports.ErrorHandler = ErrorHandler;


/***/ },
/* 11 */
/***/ function(module, exports) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	// Error messages should be identical to V8.
	exports.Messages = {
	    BadGetterArity: 'Getter must not have any formal parameters',
	    BadSetterArity: 'Setter must have exactly one formal parameter',
	    BadSetterRestParameter: 'Setter function argument must not be a rest parameter',
	    ConstructorIsAsync: 'Class constructor may not be an async method',
	    ConstructorSpecialMethod: 'Class constructor may not be an accessor',
	    DeclarationMissingInitializer: 'Missing initializer in %0 declaration',
	    DefaultRestParameter: 'Unexpected token =',
	    DuplicateBinding: 'Duplicate binding %0',
	    DuplicateConstructor: 'A class may only have one constructor',
	    DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals',
	    ForInOfLoopInitializer: '%0 loop variable declaration may not have an initializer',
	    GeneratorInLegacyContext: 'Generator declarations are not allowed in legacy contexts',
	    IllegalBreak: 'Illegal break statement',
	    IllegalContinue: 'Illegal continue statement',
	    IllegalExportDeclaration: 'Unexpected token',
	    IllegalImportDeclaration: 'Unexpected token',
	    IllegalLanguageModeDirective: 'Illegal \'use strict\' directive in function with non-simple parameter list',
	    IllegalReturn: 'Illegal return statement',
	    InvalidEscapedReservedWord: 'Keyword must not contain escaped characters',
	    InvalidHexEscapeSequence: 'Invalid hexadecimal escape sequence',
	    InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
	    InvalidLHSInForIn: 'Invalid left-hand side in for-in',
	    InvalidLHSInForLoop: 'Invalid left-hand side in for-loop',
	    InvalidModuleSpecifier: 'Unexpected token',
	    InvalidRegExp: 'Invalid regular expression',
	    LetInLexicalBinding: 'let is disallowed as a lexically bound name',
	    MissingFromClause: 'Unexpected token',
	    MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
	    NewlineAfterThrow: 'Illegal newline after throw',
	    NoAsAfterImportNamespace: 'Unexpected token',
	    NoCatchOrFinally: 'Missing catch or finally after try',
	    ParameterAfterRestParameter: 'Rest parameter must be last formal parameter',
	    Redeclaration: '%0 \'%1\' has already been declared',
	    StaticPrototype: 'Classes may not have static property named prototype',
	    StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
	    StrictDelete: 'Delete of an unqualified identifier in strict mode.',
	    StrictFunction: 'In strict mode code, functions can only be declared at top level or inside a block',
	    StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
	    StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
	    StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
	    StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
	    StrictModeWith: 'Strict mode code may not include a with statement',
	    StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
	    StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
	    StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
	    StrictReservedWord: 'Use of future reserved word in strict mode',
	    StrictVarName: 'Variable name may not be eval or arguments in strict mode',
	    TemplateOctalLiteral: 'Octal literals are not allowed in template strings.',
	    UnexpectedEOS: 'Unexpected end of input',
	    UnexpectedIdentifier: 'Unexpected identifier',
	    UnexpectedNumber: 'Unexpected number',
	    UnexpectedReserved: 'Unexpected reserved word',
	    UnexpectedString: 'Unexpected string',
	    UnexpectedTemplate: 'Unexpected quasi %0',
	    UnexpectedToken: 'Unexpected token %0',
	    UnexpectedTokenIllegal: 'Unexpected token ILLEGAL',
	    UnknownLabel: 'Undefined label \'%0\'',
	    UnterminatedRegExp: 'Invalid regular expression: missing /'
	};


/***/ },
/* 12 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var assert_1 = __webpack_require__(9);
	var character_1 = __webpack_require__(4);
	var messages_1 = __webpack_require__(11);
	function hexValue(ch) {
	    return '0123456789abcdef'.indexOf(ch.toLowerCase());
	}
	function octalValue(ch) {
	    return '01234567'.indexOf(ch);
	}
	var Scanner = (function () {
	    function Scanner(code, handler) {
	        this.source = code;
	        this.errorHandler = handler;
	        this.trackComment = false;
	        this.isModule = false;
	        this.length = code.length;
	        this.index = 0;
	        this.lineNumber = (code.length > 0) ? 1 : 0;
	        this.lineStart = 0;
	        this.curlyStack = [];
	    }
	    Scanner.prototype.saveState = function () {
	        return {
	            index: this.index,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart
	        };
	    };
	    Scanner.prototype.restoreState = function (state) {
	        this.index = state.index;
	        this.lineNumber = state.lineNumber;
	        this.lineStart = state.lineStart;
	    };
	    Scanner.prototype.eof = function () {
	        return this.index >= this.length;
	    };
	    Scanner.prototype.throwUnexpectedToken = function (message) {
	        if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; }
	        return this.errorHandler.throwError(this.index, this.lineNumber, this.index - this.lineStart + 1, message);
	    };
	    Scanner.prototype.tolerateUnexpectedToken = function (message) {
	        if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; }
	        this.errorHandler.tolerateError(this.index, this.lineNumber, this.index - this.lineStart + 1, message);
	    };
	    // https://tc39.github.io/ecma262/#sec-comments
	    Scanner.prototype.skipSingleLineComment = function (offset) {
	        var comments = [];
	        var start, loc;
	        if (this.trackComment) {
	            comments = [];
	            start = this.index - offset;
	            loc = {
	                start: {
	                    line: this.lineNumber,
	                    column: this.index - this.lineStart - offset
	                },
	                end: {}
	            };
	        }
	        while (!this.eof()) {
	            var ch = this.source.charCodeAt(this.index);
	            ++this.index;
	            if (character_1.Character.isLineTerminator(ch)) {
	                if (this.trackComment) {
	                    loc.end = {
	                        line: this.lineNumber,
	                        column: this.index - this.lineStart - 1
	                    };
	                    var entry = {
	                        multiLine: false,
	                        slice: [start + offset, this.index - 1],
	                        range: [start, this.index - 1],
	                        loc: loc
	                    };
	                    comments.push(entry);
	                }
	                if (ch === 13 && this.source.charCodeAt(this.index) === 10) {
	                    ++this.index;
	                }
	                ++this.lineNumber;
	                this.lineStart = this.index;
	                return comments;
	            }
	        }
	        if (this.trackComment) {
	            loc.end = {
	                line: this.lineNumber,
	                column: this.index - this.lineStart
	            };
	            var entry = {
	                multiLine: false,
	                slice: [start + offset, this.index],
	                range: [start, this.index],
	                loc: loc
	            };
	            comments.push(entry);
	        }
	        return comments;
	    };
	    Scanner.prototype.skipMultiLineComment = function () {
	        var comments = [];
	        var start, loc;
	        if (this.trackComment) {
	            comments = [];
	            start = this.index - 2;
	            loc = {
	                start: {
	                    line: this.lineNumber,
	                    column: this.index - this.lineStart - 2
	                },
	                end: {}
	            };
	        }
	        while (!this.eof()) {
	            var ch = this.source.charCodeAt(this.index);
	            if (character_1.Character.isLineTerminator(ch)) {
	                if (ch === 0x0D && this.source.charCodeAt(this.index + 1) === 0x0A) {
	                    ++this.index;
	                }
	                ++this.lineNumber;
	                ++this.index;
	                this.lineStart = this.index;
	            }
	            else if (ch === 0x2A) {
	                // Block comment ends with '*/'.
	                if (this.source.charCodeAt(this.index + 1) === 0x2F) {
	                    this.index += 2;
	                    if (this.trackComment) {
	                        loc.end = {
	                            line: this.lineNumber,
	                            column: this.index - this.lineStart
	                        };
	                        var entry = {
	                            multiLine: true,
	                            slice: [start + 2, this.index - 2],
	                            range: [start, this.index],
	                            loc: loc
	                        };
	                        comments.push(entry);
	                    }
	                    return comments;
	                }
	                ++this.index;
	            }
	            else {
	                ++this.index;
	            }
	        }
	        // Ran off the end of the file - the whole thing is a comment
	        if (this.trackComment) {
	            loc.end = {
	                line: this.lineNumber,
	                column: this.index - this.lineStart
	            };
	            var entry = {
	                multiLine: true,
	                slice: [start + 2, this.index],
	                range: [start, this.index],
	                loc: loc
	            };
	            comments.push(entry);
	        }
	        this.tolerateUnexpectedToken();
	        return comments;
	    };
	    Scanner.prototype.scanComments = function () {
	        var comments;
	        if (this.trackComment) {
	            comments = [];
	        }
	        var start = (this.index === 0);
	        while (!this.eof()) {
	            var ch = this.source.charCodeAt(this.index);
	            if (character_1.Character.isWhiteSpace(ch)) {
	                ++this.index;
	            }
	            else if (character_1.Character.isLineTerminator(ch)) {
	                ++this.index;
	                if (ch === 0x0D && this.source.charCodeAt(this.index) === 0x0A) {
	                    ++this.index;
	                }
	                ++this.lineNumber;
	                this.lineStart = this.index;
	                start = true;
	            }
	            else if (ch === 0x2F) {
	                ch = this.source.charCodeAt(this.index + 1);
	                if (ch === 0x2F) {
	                    this.index += 2;
	                    var comment = this.skipSingleLineComment(2);
	                    if (this.trackComment) {
	                        comments = comments.concat(comment);
	                    }
	                    start = true;
	                }
	                else if (ch === 0x2A) {
	                    this.index += 2;
	                    var comment = this.skipMultiLineComment();
	                    if (this.trackComment) {
	                        comments = comments.concat(comment);
	                    }
	                }
	                else {
	                    break;
	                }
	            }
	            else if (start && ch === 0x2D) {
	                // U+003E is '>'
	                if ((this.source.charCodeAt(this.index + 1) === 0x2D) && (this.source.charCodeAt(this.index + 2) === 0x3E)) {
	                    // '-->' is a single-line comment
	                    this.index += 3;
	                    var comment = this.skipSingleLineComment(3);
	                    if (this.trackComment) {
	                        comments = comments.concat(comment);
	                    }
	                }
	                else {
	                    break;
	                }
	            }
	            else if (ch === 0x3C && !this.isModule) {
	                if (this.source.slice(this.index + 1, this.index + 4) === '!--') {
	                    this.index += 4; // `<!--`
	                    var comment = this.skipSingleLineComment(4);
	                    if (this.trackComment) {
	                        comments = comments.concat(comment);
	                    }
	                }
	                else {
	                    break;
	                }
	            }
	            else {
	                break;
	            }
	        }
	        return comments;
	    };
	    // https://tc39.github.io/ecma262/#sec-future-reserved-words
	    Scanner.prototype.isFutureReservedWord = function (id) {
	        switch (id) {
	            case 'enum':
	            case 'export':
	            case 'import':
	            case 'super':
	                return true;
	            default:
	                return false;
	        }
	    };
	    Scanner.prototype.isStrictModeReservedWord = function (id) {
	        switch (id) {
	            case 'implements':
	            case 'interface':
	            case 'package':
	            case 'private':
	            case 'protected':
	            case 'public':
	            case 'static':
	            case 'yield':
	            case 'let':
	                return true;
	            default:
	                return false;
	        }
	    };
	    Scanner.prototype.isRestrictedWord = function (id) {
	        return id === 'eval' || id === 'arguments';
	    };
	    // https://tc39.github.io/ecma262/#sec-keywords
	    Scanner.prototype.isKeyword = function (id) {
	        switch (id.length) {
	            case 2:
	                return (id === 'if') || (id === 'in') || (id === 'do');
	            case 3:
	                return (id === 'var') || (id === 'for') || (id === 'new') ||
	                    (id === 'try') || (id === 'let');
	            case 4:
	                return (id === 'this') || (id === 'else') || (id === 'case') ||
	                    (id === 'void') || (id === 'with') || (id === 'enum');
	            case 5:
	                return (id === 'while') || (id === 'break') || (id === 'catch') ||
	                    (id === 'throw') || (id === 'const') || (id === 'yield') ||
	                    (id === 'class') || (id === 'super');
	            case 6:
	                return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
	                    (id === 'switch') || (id === 'export') || (id === 'import');
	            case 7:
	                return (id === 'default') || (id === 'finally') || (id === 'extends');
	            case 8:
	                return (id === 'function') || (id === 'continue') || (id === 'debugger');
	            case 10:
	                return (id === 'instanceof');
	            default:
	                return false;
	        }
	    };
	    Scanner.prototype.codePointAt = function (i) {
	        var cp = this.source.charCodeAt(i);
	        if (cp >= 0xD800 && cp <= 0xDBFF) {
	            var second = this.source.charCodeAt(i + 1);
	            if (second >= 0xDC00 && second <= 0xDFFF) {
	                var first = cp;
	                cp = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
	            }
	        }
	        return cp;
	    };
	    Scanner.prototype.scanHexEscape = function (prefix) {
	        var len = (prefix === 'u') ? 4 : 2;
	        var code = 0;
	        for (var i = 0; i < len; ++i) {
	            if (!this.eof() && character_1.Character.isHexDigit(this.source.charCodeAt(this.index))) {
	                code = code * 16 + hexValue(this.source[this.index++]);
	            }
	            else {
	                return null;
	            }
	        }
	        return String.fromCharCode(code);
	    };
	    Scanner.prototype.scanUnicodeCodePointEscape = function () {
	        var ch = this.source[this.index];
	        var code = 0;
	        // At least, one hex digit is required.
	        if (ch === '}') {
	            this.throwUnexpectedToken();
	        }
	        while (!this.eof()) {
	            ch = this.source[this.index++];
	            if (!character_1.Character.isHexDigit(ch.charCodeAt(0))) {
	                break;
	            }
	            code = code * 16 + hexValue(ch);
	        }
	        if (code > 0x10FFFF || ch !== '}') {
	            this.throwUnexpectedToken();
	        }
	        return character_1.Character.fromCodePoint(code);
	    };
	    Scanner.prototype.getIdentifier = function () {
	        var start = this.index++;
	        while (!this.eof()) {
	            var ch = this.source.charCodeAt(this.index);
	            if (ch === 0x5C) {
	                // Blackslash (U+005C) marks Unicode escape sequence.
	                this.index = start;
	                return this.getComplexIdentifier();
	            }
	            else if (ch >= 0xD800 && ch < 0xDFFF) {
	                // Need to handle surrogate pairs.
	                this.index = start;
	                return this.getComplexIdentifier();
	            }
	            if (character_1.Character.isIdentifierPart(ch)) {
	                ++this.index;
	            }
	            else {
	                break;
	            }
	        }
	        return this.source.slice(start, this.index);
	    };
	    Scanner.prototype.getComplexIdentifier = function () {
	        var cp = this.codePointAt(this.index);
	        var id = character_1.Character.fromCodePoint(cp);
	        this.index += id.length;
	        // '\u' (U+005C, U+0075) denotes an escaped character.
	        var ch;
	        if (cp === 0x5C) {
	            if (this.source.charCodeAt(this.index) !== 0x75) {
	                this.throwUnexpectedToken();
	            }
	            ++this.index;
	            if (this.source[this.index] === '{') {
	                ++this.index;
	                ch = this.scanUnicodeCodePointEscape();
	            }
	            else {
	                ch = this.scanHexEscape('u');
	                if (ch === null || ch === '\\' || !character_1.Character.isIdentifierStart(ch.charCodeAt(0))) {
	                    this.throwUnexpectedToken();
	                }
	            }
	            id = ch;
	        }
	        while (!this.eof()) {
	            cp = this.codePointAt(this.index);
	            if (!character_1.Character.isIdentifierPart(cp)) {
	                break;
	            }
	            ch = character_1.Character.fromCodePoint(cp);
	            id += ch;
	            this.index += ch.length;
	            // '\u' (U+005C, U+0075) denotes an escaped character.
	            if (cp === 0x5C) {
	                id = id.substr(0, id.length - 1);
	                if (this.source.charCodeAt(this.index) !== 0x75) {
	                    this.throwUnexpectedToken();
	                }
	                ++this.index;
	                if (this.source[this.index] === '{') {
	                    ++this.index;
	                    ch = this.scanUnicodeCodePointEscape();
	                }
	                else {
	                    ch = this.scanHexEscape('u');
	                    if (ch === null || ch === '\\' || !character_1.Character.isIdentifierPart(ch.charCodeAt(0))) {
	                        this.throwUnexpectedToken();
	                    }
	                }
	                id += ch;
	            }
	        }
	        return id;
	    };
	    Scanner.prototype.octalToDecimal = function (ch) {
	        // \0 is not octal escape sequence
	        var octal = (ch !== '0');
	        var code = octalValue(ch);
	        if (!this.eof() && character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))) {
	            octal = true;
	            code = code * 8 + octalValue(this.source[this.index++]);
	            // 3 digits are only allowed when string starts
	            // with 0, 1, 2, 3
	            if ('0123'.indexOf(ch) >= 0 && !this.eof() && character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))) {
	                code = code * 8 + octalValue(this.source[this.index++]);
	            }
	        }
	        return {
	            code: code,
	            octal: octal
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-names-and-keywords
	    Scanner.prototype.scanIdentifier = function () {
	        var type;
	        var start = this.index;
	        // Backslash (U+005C) starts an escaped character.
	        var id = (this.source.charCodeAt(start) === 0x5C) ? this.getComplexIdentifier() : this.getIdentifier();
	        // There is no keyword or literal with only one character.
	        // Thus, it must be an identifier.
	        if (id.length === 1) {
	            type = 3 /* Identifier */;
	        }
	        else if (this.isKeyword(id)) {
	            type = 4 /* Keyword */;
	        }
	        else if (id === 'null') {
	            type = 5 /* NullLiteral */;
	        }
	        else if (id === 'true' || id === 'false') {
	            type = 1 /* BooleanLiteral */;
	        }
	        else {
	            type = 3 /* Identifier */;
	        }
	        if (type !== 3 /* Identifier */ && (start + id.length !== this.index)) {
	            var restore = this.index;
	            this.index = start;
	            this.tolerateUnexpectedToken(messages_1.Messages.InvalidEscapedReservedWord);
	            this.index = restore;
	        }
	        return {
	            type: type,
	            value: id,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-punctuators
	    Scanner.prototype.scanPunctuator = function () {
	        var start = this.index;
	        // Check for most common single-character punctuators.
	        var str = this.source[this.index];
	        switch (str) {
	            case '(':
	            case '{':
	                if (str === '{') {
	                    this.curlyStack.push('{');
	                }
	                ++this.index;
	                break;
	            case '.':
	                ++this.index;
	                if (this.source[this.index] === '.' && this.source[this.index + 1] === '.') {
	                    // Spread operator: ...
	                    this.index += 2;
	                    str = '...';
	                }
	                break;
	            case '}':
	                ++this.index;
	                this.curlyStack.pop();
	                break;
	            case ')':
	            case ';':
	            case ',':
	            case '[':
	            case ']':
	            case ':':
	            case '?':
	            case '~':
	                ++this.index;
	                break;
	            default:
	                // 4-character punctuator.
	                str = this.source.substr(this.index, 4);
	                if (str === '>>>=') {
	                    this.index += 4;
	                }
	                else {
	                    // 3-character punctuators.
	                    str = str.substr(0, 3);
	                    if (str === '===' || str === '!==' || str === '>>>' ||
	                        str === '<<=' || str === '>>=' || str === '**=') {
	                        this.index += 3;
	                    }
	                    else {
	                        // 2-character punctuators.
	                        str = str.substr(0, 2);
	                        if (str === '&&' || str === '||' || str === '==' || str === '!=' ||
	                            str === '+=' || str === '-=' || str === '*=' || str === '/=' ||
	                            str === '++' || str === '--' || str === '<<' || str === '>>' ||
	                            str === '&=' || str === '|=' || str === '^=' || str === '%=' ||
	                            str === '<=' || str === '>=' || str === '=>' || str === '**') {
	                            this.index += 2;
	                        }
	                        else {
	                            // 1-character punctuators.
	                            str = this.source[this.index];
	                            if ('<>=!+-*%&|^/'.indexOf(str) >= 0) {
	                                ++this.index;
	                            }
	                        }
	                    }
	                }
	        }
	        if (this.index === start) {
	            this.throwUnexpectedToken();
	        }
	        return {
	            type: 7 /* Punctuator */,
	            value: str,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-literals-numeric-literals
	    Scanner.prototype.scanHexLiteral = function (start) {
	        var num = '';
	        while (!this.eof()) {
	            if (!character_1.Character.isHexDigit(this.source.charCodeAt(this.index))) {
	                break;
	            }
	            num += this.source[this.index++];
	        }
	        if (num.length === 0) {
	            this.throwUnexpectedToken();
	        }
	        if (character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index))) {
	            this.throwUnexpectedToken();
	        }
	        return {
	            type: 6 /* NumericLiteral */,
	            value: parseInt('0x' + num, 16),
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    Scanner.prototype.scanBinaryLiteral = function (start) {
	        var num = '';
	        var ch;
	        while (!this.eof()) {
	            ch = this.source[this.index];
	            if (ch !== '0' && ch !== '1') {
	                break;
	            }
	            num += this.source[this.index++];
	        }
	        if (num.length === 0) {
	            // only 0b or 0B
	            this.throwUnexpectedToken();
	        }
	        if (!this.eof()) {
	            ch = this.source.charCodeAt(this.index);
	            /* istanbul ignore else */
	            if (character_1.Character.isIdentifierStart(ch) || character_1.Character.isDecimalDigit(ch)) {
	                this.throwUnexpectedToken();
	            }
	        }
	        return {
	            type: 6 /* NumericLiteral */,
	            value: parseInt(num, 2),
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    Scanner.prototype.scanOctalLiteral = function (prefix, start) {
	        var num = '';
	        var octal = false;
	        if (character_1.Character.isOctalDigit(prefix.charCodeAt(0))) {
	            octal = true;
	            num = '0' + this.source[this.index++];
	        }
	        else {
	            ++this.index;
	        }
	        while (!this.eof()) {
	            if (!character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))) {
	                break;
	            }
	            num += this.source[this.index++];
	        }
	        if (!octal && num.length === 0) {
	            // only 0o or 0O
	            this.throwUnexpectedToken();
	        }
	        if (character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index)) || character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	            this.throwUnexpectedToken();
	        }
	        return {
	            type: 6 /* NumericLiteral */,
	            value: parseInt(num, 8),
	            octal: octal,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    Scanner.prototype.isImplicitOctalLiteral = function () {
	        // Implicit octal, unless there is a non-octal digit.
	        // (Annex B.1.1 on Numeric Literals)
	        for (var i = this.index + 1; i < this.length; ++i) {
	            var ch = this.source[i];
	            if (ch === '8' || ch === '9') {
	                return false;
	            }
	            if (!character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
	                return true;
	            }
	        }
	        return true;
	    };
	    Scanner.prototype.scanNumericLiteral = function () {
	        var start = this.index;
	        var ch = this.source[start];
	        assert_1.assert(character_1.Character.isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'), 'Numeric literal must start with a decimal digit or a decimal point');
	        var num = '';
	        if (ch !== '.') {
	            num = this.source[this.index++];
	            ch = this.source[this.index];
	            // Hex number starts with '0x'.
	            // Octal number starts with '0'.
	            // Octal number in ES6 starts with '0o'.
	            // Binary number in ES6 starts with '0b'.
	            if (num === '0') {
	                if (ch === 'x' || ch === 'X') {
	                    ++this.index;
	                    return this.scanHexLiteral(start);
	                }
	                if (ch === 'b' || ch === 'B') {
	                    ++this.index;
	                    return this.scanBinaryLiteral(start);
	                }
	                if (ch === 'o' || ch === 'O') {
	                    return this.scanOctalLiteral(ch, start);
	                }
	                if (ch && character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
	                    if (this.isImplicitOctalLiteral()) {
	                        return this.scanOctalLiteral(ch, start);
	                    }
	                }
	            }
	            while (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	                num += this.source[this.index++];
	            }
	            ch = this.source[this.index];
	        }
	        if (ch === '.') {
	            num += this.source[this.index++];
	            while (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	                num += this.source[this.index++];
	            }
	            ch = this.source[this.index];
	        }
	        if (ch === 'e' || ch === 'E') {
	            num += this.source[this.index++];
	            ch = this.source[this.index];
	            if (ch === '+' || ch === '-') {
	                num += this.source[this.index++];
	            }
	            if (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	                while (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	                    num += this.source[this.index++];
	                }
	            }
	            else {
	                this.throwUnexpectedToken();
	            }
	        }
	        if (character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index))) {
	            this.throwUnexpectedToken();
	        }
	        return {
	            type: 6 /* NumericLiteral */,
	            value: parseFloat(num),
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-literals-string-literals
	    Scanner.prototype.scanStringLiteral = function () {
	        var start = this.index;
	        var quote = this.source[start];
	        assert_1.assert((quote === '\'' || quote === '"'), 'String literal must starts with a quote');
	        ++this.index;
	        var octal = false;
	        var str = '';
	        while (!this.eof()) {
	            var ch = this.source[this.index++];
	            if (ch === quote) {
	                quote = '';
	                break;
	            }
	            else if (ch === '\\') {
	                ch = this.source[this.index++];
	                if (!ch || !character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                    switch (ch) {
	                        case 'u':
	                            if (this.source[this.index] === '{') {
	                                ++this.index;
	                                str += this.scanUnicodeCodePointEscape();
	                            }
	                            else {
	                                var unescaped_1 = this.scanHexEscape(ch);
	                                if (unescaped_1 === null) {
	                                    this.throwUnexpectedToken();
	                                }
	                                str += unescaped_1;
	                            }
	                            break;
	                        case 'x':
	                            var unescaped = this.scanHexEscape(ch);
	                            if (unescaped === null) {
	                                this.throwUnexpectedToken(messages_1.Messages.InvalidHexEscapeSequence);
	                            }
	                            str += unescaped;
	                            break;
	                        case 'n':
	                            str += '\n';
	                            break;
	                        case 'r':
	                            str += '\r';
	                            break;
	                        case 't':
	                            str += '\t';
	                            break;
	                        case 'b':
	                            str += '\b';
	                            break;
	                        case 'f':
	                            str += '\f';
	                            break;
	                        case 'v':
	                            str += '\x0B';
	                            break;
	                        case '8':
	                        case '9':
	                            str += ch;
	                            this.tolerateUnexpectedToken();
	                            break;
	                        default:
	                            if (ch && character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
	                                var octToDec = this.octalToDecimal(ch);
	                                octal = octToDec.octal || octal;
	                                str += String.fromCharCode(octToDec.code);
	                            }
	                            else {
	                                str += ch;
	                            }
	                            break;
	                    }
	                }
	                else {
	                    ++this.lineNumber;
	                    if (ch === '\r' && this.source[this.index] === '\n') {
	                        ++this.index;
	                    }
	                    this.lineStart = this.index;
	                }
	            }
	            else if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                break;
	            }
	            else {
	                str += ch;
	            }
	        }
	        if (quote !== '') {
	            this.index = start;
	            this.throwUnexpectedToken();
	        }
	        return {
	            type: 8 /* StringLiteral */,
	            value: str,
	            octal: octal,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-template-literal-lexical-components
	    Scanner.prototype.scanTemplate = function () {
	        var cooked = '';
	        var terminated = false;
	        var start = this.index;
	        var head = (this.source[start] === '`');
	        var tail = false;
	        var rawOffset = 2;
	        ++this.index;
	        while (!this.eof()) {
	            var ch = this.source[this.index++];
	            if (ch === '`') {
	                rawOffset = 1;
	                tail = true;
	                terminated = true;
	                break;
	            }
	            else if (ch === '$') {
	                if (this.source[this.index] === '{') {
	                    this.curlyStack.push('${');
	                    ++this.index;
	                    terminated = true;
	                    break;
	                }
	                cooked += ch;
	            }
	            else if (ch === '\\') {
	                ch = this.source[this.index++];
	                if (!character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                    switch (ch) {
	                        case 'n':
	                            cooked += '\n';
	                            break;
	                        case 'r':
	                            cooked += '\r';
	                            break;
	                        case 't':
	                            cooked += '\t';
	                            break;
	                        case 'u':
	                            if (this.source[this.index] === '{') {
	                                ++this.index;
	                                cooked += this.scanUnicodeCodePointEscape();
	                            }
	                            else {
	                                var restore = this.index;
	                                var unescaped_2 = this.scanHexEscape(ch);
	                                if (unescaped_2 !== null) {
	                                    cooked += unescaped_2;
	                                }
	                                else {
	                                    this.index = restore;
	                                    cooked += ch;
	                                }
	                            }
	                            break;
	                        case 'x':
	                            var unescaped = this.scanHexEscape(ch);
	                            if (unescaped === null) {
	                                this.throwUnexpectedToken(messages_1.Messages.InvalidHexEscapeSequence);
	                            }
	                            cooked += unescaped;
	                            break;
	                        case 'b':
	                            cooked += '\b';
	                            break;
	                        case 'f':
	                            cooked += '\f';
	                            break;
	                        case 'v':
	                            cooked += '\v';
	                            break;
	                        default:
	                            if (ch === '0') {
	                                if (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	                                    // Illegal: \01 \02 and so on
	                                    this.throwUnexpectedToken(messages_1.Messages.TemplateOctalLiteral);
	                                }
	                                cooked += '\0';
	                            }
	                            else if (character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
	                                // Illegal: \1 \2
	                                this.throwUnexpectedToken(messages_1.Messages.TemplateOctalLiteral);
	                            }
	                            else {
	                                cooked += ch;
	                            }
	                            break;
	                    }
	                }
	                else {
	                    ++this.lineNumber;
	                    if (ch === '\r' && this.source[this.index] === '\n') {
	                        ++this.index;
	                    }
	                    this.lineStart = this.index;
	                }
	            }
	            else if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                ++this.lineNumber;
	                if (ch === '\r' && this.source[this.index] === '\n') {
	                    ++this.index;
	                }
	                this.lineStart = this.index;
	                cooked += '\n';
	            }
	            else {
	                cooked += ch;
	            }
	        }
	        if (!terminated) {
	            this.throwUnexpectedToken();
	        }
	        if (!head) {
	            this.curlyStack.pop();
	        }
	        return {
	            type: 10 /* Template */,
	            value: this.source.slice(start + 1, this.index - rawOffset),
	            cooked: cooked,
	            head: head,
	            tail: tail,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-literals-regular-expression-literals
	    Scanner.prototype.testRegExp = function (pattern, flags) {
	        // The BMP character to use as a replacement for astral symbols when
	        // translating an ES6 "u"-flagged pattern to an ES5-compatible
	        // approximation.
	        // Note: replacing with '\uFFFF' enables false positives in unlikely
	        // scenarios. For example, `[\u{1044f}-\u{10440}]` is an invalid
	        // pattern that would not be detected by this substitution.
	        var astralSubstitute = '\uFFFF';
	        var tmp = pattern;
	        var self = this;
	        if (flags.indexOf('u') >= 0) {
	            tmp = tmp
	                .replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, function ($0, $1, $2) {
	                var codePoint = parseInt($1 || $2, 16);
	                if (codePoint > 0x10FFFF) {
	                    self.throwUnexpectedToken(messages_1.Messages.InvalidRegExp);
	                }
	                if (codePoint <= 0xFFFF) {
	                    return String.fromCharCode(codePoint);
	                }
	                return astralSubstitute;
	            })
	                .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, astralSubstitute);
	        }
	        // First, detect invalid regular expressions.
	        try {
	            RegExp(tmp);
	        }
	        catch (e) {
	            this.throwUnexpectedToken(messages_1.Messages.InvalidRegExp);
	        }
	        // Return a regular expression object for this pattern-flag pair, or
	        // `null` in case the current environment doesn't support the flags it
	        // uses.
	        try {
	            return new RegExp(pattern, flags);
	        }
	        catch (exception) {
	            /* istanbul ignore next */
	            return null;
	        }
	    };
	    Scanner.prototype.scanRegExpBody = function () {
	        var ch = this.source[this.index];
	        assert_1.assert(ch === '/', 'Regular expression literal must start with a slash');
	        var str = this.source[this.index++];
	        var classMarker = false;
	        var terminated = false;
	        while (!this.eof()) {
	            ch = this.source[this.index++];
	            str += ch;
	            if (ch === '\\') {
	                ch = this.source[this.index++];
	                // https://tc39.github.io/ecma262/#sec-literals-regular-expression-literals
	                if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                    this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);
	                }
	                str += ch;
	            }
	            else if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);
	            }
	            else if (classMarker) {
	                if (ch === ']') {
	                    classMarker = false;
	                }
	            }
	            else {
	                if (ch === '/') {
	                    terminated = true;
	                    break;
	                }
	                else if (ch === '[') {
	                    classMarker = true;
	                }
	            }
	        }
	        if (!terminated) {
	            this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);
	        }
	        // Exclude leading and trailing slash.
	        return str.substr(1, str.length - 2);
	    };
	    Scanner.prototype.scanRegExpFlags = function () {
	        var str = '';
	        var flags = '';
	        while (!this.eof()) {
	            var ch = this.source[this.index];
	            if (!character_1.Character.isIdentifierPart(ch.charCodeAt(0))) {
	                break;
	            }
	            ++this.index;
	            if (ch === '\\' && !this.eof()) {
	                ch = this.source[this.index];
	                if (ch === 'u') {
	                    ++this.index;
	                    var restore = this.index;
	                    var char = this.scanHexEscape('u');
	                    if (char !== null) {
	                        flags += char;
	                        for (str += '\\u'; restore < this.index; ++restore) {
	                            str += this.source[restore];
	                        }
	                    }
	                    else {
	                        this.index = restore;
	                        flags += 'u';
	                        str += '\\u';
	                    }
	                    this.tolerateUnexpectedToken();
	                }
	                else {
	                    str += '\\';
	                    this.tolerateUnexpectedToken();
	                }
	            }
	            else {
	                flags += ch;
	                str += ch;
	            }
	        }
	        return flags;
	    };
	    Scanner.prototype.scanRegExp = function () {
	        var start = this.index;
	        var pattern = this.scanRegExpBody();
	        var flags = this.scanRegExpFlags();
	        var value = this.testRegExp(pattern, flags);
	        return {
	            type: 9 /* RegularExpression */,
	            value: '',
	            pattern: pattern,
	            flags: flags,
	            regex: value,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    Scanner.prototype.lex = function () {
	        if (this.eof()) {
	            return {
	                type: 2 /* EOF */,
	                value: '',
	                lineNumber: this.lineNumber,
	                lineStart: this.lineStart,
	                start: this.index,
	                end: this.index
	            };
	        }
	        var cp = this.source.charCodeAt(this.index);
	        if (character_1.Character.isIdentifierStart(cp)) {
	            return this.scanIdentifier();
	        }
	        // Very common: ( and ) and ;
	        if (cp === 0x28 || cp === 0x29 || cp === 0x3B) {
	            return this.scanPunctuator();
	        }
	        // String literal starts with single quote (U+0027) or double quote (U+0022).
	        if (cp === 0x27 || cp === 0x22) {
	            return this.scanStringLiteral();
	        }
	        // Dot (.) U+002E can also start a floating-point number, hence the need
	        // to check the next character.
	        if (cp === 0x2E) {
	            if (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index + 1))) {
	                return this.scanNumericLiteral();
	            }
	            return this.scanPunctuator();
	        }
	        if (character_1.Character.isDecimalDigit(cp)) {
	            return this.scanNumericLiteral();
	        }
	        // Template literals start with ` (U+0060) for template head
	        // or } (U+007D) for template middle or template tail.
	        if (cp === 0x60 || (cp === 0x7D && this.curlyStack[this.curlyStack.length - 1] === '${')) {
	            return this.scanTemplate();
	        }
	        // Possible identifier start in a surrogate pair.
	        if (cp >= 0xD800 && cp < 0xDFFF) {
	            if (character_1.Character.isIdentifierStart(this.codePointAt(this.index))) {
	                return this.scanIdentifier();
	            }
	        }
	        return this.scanPunctuator();
	    };
	    return Scanner;
	}());
	exports.Scanner = Scanner;


/***/ },
/* 13 */
/***/ function(module, exports) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	exports.TokenName = {};
	exports.TokenName[1 /* BooleanLiteral */] = 'Boolean';
	exports.TokenName[2 /* EOF */] = '<end>';
	exports.TokenName[3 /* Identifier */] = 'Identifier';
	exports.TokenName[4 /* Keyword */] = 'Keyword';
	exports.TokenName[5 /* NullLiteral */] = 'Null';
	exports.TokenName[6 /* NumericLiteral */] = 'Numeric';
	exports.TokenName[7 /* Punctuator */] = 'Punctuator';
	exports.TokenName[8 /* StringLiteral */] = 'String';
	exports.TokenName[9 /* RegularExpression */] = 'RegularExpression';
	exports.TokenName[10 /* Template */] = 'Template';


/***/ },
/* 14 */
/***/ function(module, exports) {

	"use strict";
	// Generated by generate-xhtml-entities.js. DO NOT MODIFY!
	Object.defineProperty(exports, "__esModule", { value: true });
	exports.XHTMLEntities = {
	    quot: '\u0022',
	    amp: '\u0026',
	    apos: '\u0027',
	    gt: '\u003E',
	    nbsp: '\u00A0',
	    iexcl: '\u00A1',
	    cent: '\u00A2',
	    pound: '\u00A3',
	    curren: '\u00A4',
	    yen: '\u00A5',
	    brvbar: '\u00A6',
	    sect: '\u00A7',
	    uml: '\u00A8',
	    copy: '\u00A9',
	    ordf: '\u00AA',
	    laquo: '\u00AB',
	    not: '\u00AC',
	    shy: '\u00AD',
	    reg: '\u00AE',
	    macr: '\u00AF',
	    deg: '\u00B0',
	    plusmn: '\u00B1',
	    sup2: '\u00B2',
	    sup3: '\u00B3',
	    acute: '\u00B4',
	    micro: '\u00B5',
	    para: '\u00B6',
	    middot: '\u00B7',
	    cedil: '\u00B8',
	    sup1: '\u00B9',
	    ordm: '\u00BA',
	    raquo: '\u00BB',
	    frac14: '\u00BC',
	    frac12: '\u00BD',
	    frac34: '\u00BE',
	    iquest: '\u00BF',
	    Agrave: '\u00C0',
	    Aacute: '\u00C1',
	    Acirc: '\u00C2',
	    Atilde: '\u00C3',
	    Auml: '\u00C4',
	    Aring: '\u00C5',
	    AElig: '\u00C6',
	    Ccedil: '\u00C7',
	    Egrave: '\u00C8',
	    Eacute: '\u00C9',
	    Ecirc: '\u00CA',
	    Euml: '\u00CB',
	    Igrave: '\u00CC',
	    Iacute: '\u00CD',
	    Icirc: '\u00CE',
	    Iuml: '\u00CF',
	    ETH: '\u00D0',
	    Ntilde: '\u00D1',
	    Ograve: '\u00D2',
	    Oacute: '\u00D3',
	    Ocirc: '\u00D4',
	    Otilde: '\u00D5',
	    Ouml: '\u00D6',
	    times: '\u00D7',
	    Oslash: '\u00D8',
	    Ugrave: '\u00D9',
	    Uacute: '\u00DA',
	    Ucirc: '\u00DB',
	    Uuml: '\u00DC',
	    Yacute: '\u00DD',
	    THORN: '\u00DE',
	    szlig: '\u00DF',
	    agrave: '\u00E0',
	    aacute: '\u00E1',
	    acirc: '\u00E2',
	    atilde: '\u00E3',
	    auml: '\u00E4',
	    aring: '\u00E5',
	    aelig: '\u00E6',
	    ccedil: '\u00E7',
	    egrave: '\u00E8',
	    eacute: '\u00E9',
	    ecirc: '\u00EA',
	    euml: '\u00EB',
	    igrave: '\u00EC',
	    iacute: '\u00ED',
	    icirc: '\u00EE',
	    iuml: '\u00EF',
	    eth: '\u00F0',
	    ntilde: '\u00F1',
	    ograve: '\u00F2',
	    oacute: '\u00F3',
	    ocirc: '\u00F4',
	    otilde: '\u00F5',
	    ouml: '\u00F6',
	    divide: '\u00F7',
	    oslash: '\u00F8',
	    ugrave: '\u00F9',
	    uacute: '\u00FA',
	    ucirc: '\u00FB',
	    uuml: '\u00FC',
	    yacute: '\u00FD',
	    thorn: '\u00FE',
	    yuml: '\u00FF',
	    OElig: '\u0152',
	    oelig: '\u0153',
	    Scaron: '\u0160',
	    scaron: '\u0161',
	    Yuml: '\u0178',
	    fnof: '\u0192',
	    circ: '\u02C6',
	    tilde: '\u02DC',
	    Alpha: '\u0391',
	    Beta: '\u0392',
	    Gamma: '\u0393',
	    Delta: '\u0394',
	    Epsilon: '\u0395',
	    Zeta: '\u0396',
	    Eta: '\u0397',
	    Theta: '\u0398',
	    Iota: '\u0399',
	    Kappa: '\u039A',
	    Lambda: '\u039B',
	    Mu: '\u039C',
	    Nu: '\u039D',
	    Xi: '\u039E',
	    Omicron: '\u039F',
	    Pi: '\u03A0',
	    Rho: '\u03A1',
	    Sigma: '\u03A3',
	    Tau: '\u03A4',
	    Upsilon: '\u03A5',
	    Phi: '\u03A6',
	    Chi: '\u03A7',
	    Psi: '\u03A8',
	    Omega: '\u03A9',
	    alpha: '\u03B1',
	    beta: '\u03B2',
	    gamma: '\u03B3',
	    delta: '\u03B4',
	    epsilon: '\u03B5',
	    zeta: '\u03B6',
	    eta: '\u03B7',
	    theta: '\u03B8',
	    iota: '\u03B9',
	    kappa: '\u03BA',
	    lambda: '\u03BB',
	    mu: '\u03BC',
	    nu: '\u03BD',
	    xi: '\u03BE',
	    omicron: '\u03BF',
	    pi: '\u03C0',
	    rho: '\u03C1',
	    sigmaf: '\u03C2',
	    sigma: '\u03C3',
	    tau: '\u03C4',
	    upsilon: '\u03C5',
	    phi: '\u03C6',
	    chi: '\u03C7',
	    psi: '\u03C8',
	    omega: '\u03C9',
	    thetasym: '\u03D1',
	    upsih: '\u03D2',
	    piv: '\u03D6',
	    ensp: '\u2002',
	    emsp: '\u2003',
	    thinsp: '\u2009',
	    zwnj: '\u200C',
	    zwj: '\u200D',
	    lrm: '\u200E',
	    rlm: '\u200F',
	    ndash: '\u2013',
	    mdash: '\u2014',
	    lsquo: '\u2018',
	    rsquo: '\u2019',
	    sbquo: '\u201A',
	    ldquo: '\u201C',
	    rdquo: '\u201D',
	    bdquo: '\u201E',
	    dagger: '\u2020',
	    Dagger: '\u2021',
	    bull: '\u2022',
	    hellip: '\u2026',
	    permil: '\u2030',
	    prime: '\u2032',
	    Prime: '\u2033',
	    lsaquo: '\u2039',
	    rsaquo: '\u203A',
	    oline: '\u203E',
	    frasl: '\u2044',
	    euro: '\u20AC',
	    image: '\u2111',
	    weierp: '\u2118',
	    real: '\u211C',
	    trade: '\u2122',
	    alefsym: '\u2135',
	    larr: '\u2190',
	    uarr: '\u2191',
	    rarr: '\u2192',
	    darr: '\u2193',
	    harr: '\u2194',
	    crarr: '\u21B5',
	    lArr: '\u21D0',
	    uArr: '\u21D1',
	    rArr: '\u21D2',
	    dArr: '\u21D3',
	    hArr: '\u21D4',
	    forall: '\u2200',
	    part: '\u2202',
	    exist: '\u2203',
	    empty: '\u2205',
	    nabla: '\u2207',
	    isin: '\u2208',
	    notin: '\u2209',
	    ni: '\u220B',
	    prod: '\u220F',
	    sum: '\u2211',
	    minus: '\u2212',
	    lowast: '\u2217',
	    radic: '\u221A',
	    prop: '\u221D',
	    infin: '\u221E',
	    ang: '\u2220',
	    and: '\u2227',
	    or: '\u2228',
	    cap: '\u2229',
	    cup: '\u222A',
	    int: '\u222B',
	    there4: '\u2234',
	    sim: '\u223C',
	    cong: '\u2245',
	    asymp: '\u2248',
	    ne: '\u2260',
	    equiv: '\u2261',
	    le: '\u2264',
	    ge: '\u2265',
	    sub: '\u2282',
	    sup: '\u2283',
	    nsub: '\u2284',
	    sube: '\u2286',
	    supe: '\u2287',
	    oplus: '\u2295',
	    otimes: '\u2297',
	    perp: '\u22A5',
	    sdot: '\u22C5',
	    lceil: '\u2308',
	    rceil: '\u2309',
	    lfloor: '\u230A',
	    rfloor: '\u230B',
	    loz: '\u25CA',
	    spades: '\u2660',
	    clubs: '\u2663',
	    hearts: '\u2665',
	    diams: '\u2666',
	    lang: '\u27E8',
	    rang: '\u27E9'
	};


/***/ },
/* 15 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var error_handler_1 = __webpack_require__(10);
	var scanner_1 = __webpack_require__(12);
	var token_1 = __webpack_require__(13);
	var Reader = (function () {
	    function Reader() {
	        this.values = [];
	        this.curly = this.paren = -1;
	    }
	    // A function following one of those tokens is an expression.
	    Reader.prototype.beforeFunctionExpression = function (t) {
	        return ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
	            'return', 'case', 'delete', 'throw', 'void',
	            // assignment operators
	            '=', '+=', '-=', '*=', '**=', '/=', '%=', '<<=', '>>=', '>>>=',
	            '&=', '|=', '^=', ',',
	            // binary/unary operators
	            '+', '-', '*', '**', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
	            '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
	            '<=', '<', '>', '!=', '!=='].indexOf(t) >= 0;
	    };
	    // Determine if forward slash (/) is an operator or part of a regular expression
	    // https://github.com/mozilla/sweet.js/wiki/design
	    Reader.prototype.isRegexStart = function () {
	        var previous = this.values[this.values.length - 1];
	        var regex = (previous !== null);
	        switch (previous) {
	            case 'this':
	            case ']':
	                regex = false;
	                break;
	            case ')':
	                var keyword = this.values[this.paren - 1];
	                regex = (keyword === 'if' || keyword === 'while' || keyword === 'for' || keyword === 'with');
	                break;
	            case '}':
	                // Dividing a function by anything makes little sense,
	                // but we have to check for that.
	                regex = false;
	                if (this.values[this.curly - 3] === 'function') {
	                    // Anonymous function, e.g. function(){} /42
	                    var check = this.values[this.curly - 4];
	                    regex = check ? !this.beforeFunctionExpression(check) : false;
	                }
	                else if (this.values[this.curly - 4] === 'function') {
	                    // Named function, e.g. function f(){} /42/
	                    var check = this.values[this.curly - 5];
	                    regex = check ? !this.beforeFunctionExpression(check) : true;
	                }
	                break;
	            default:
	                break;
	        }
	        return regex;
	    };
	    Reader.prototype.push = function (token) {
	        if (token.type === 7 /* Punctuator */ || token.type === 4 /* Keyword */) {
	            if (token.value === '{') {
	                this.curly = this.values.length;
	            }
	            else if (token.value === '(') {
	                this.paren = this.values.length;
	            }
	            this.values.push(token.value);
	        }
	        else {
	            this.values.push(null);
	        }
	    };
	    return Reader;
	}());
	var Tokenizer = (function () {
	    function Tokenizer(code, config) {
	        this.errorHandler = new error_handler_1.ErrorHandler();
	        this.errorHandler.tolerant = config ? (typeof config.tolerant === 'boolean' && config.tolerant) : false;
	        this.scanner = new scanner_1.Scanner(code, this.errorHandler);
	        this.scanner.trackComment = config ? (typeof config.comment === 'boolean' && config.comment) : false;
	        this.trackRange = config ? (typeof config.range === 'boolean' && config.range) : false;
	        this.trackLoc = config ? (typeof config.loc === 'boolean' && config.loc) : false;
	        this.buffer = [];
	        this.reader = new Reader();
	    }
	    Tokenizer.prototype.errors = function () {
	        return this.errorHandler.errors;
	    };
	    Tokenizer.prototype.getNextToken = function () {
	        if (this.buffer.length === 0) {
	            var comments = this.scanner.scanComments();
	            if (this.scanner.trackComment) {
	                for (var i = 0; i < comments.length; ++i) {
	                    var e = comments[i];
	                    var value = this.scanner.source.slice(e.slice[0], e.slice[1]);
	                    var comment = {
	                        type: e.multiLine ? 'BlockComment' : 'LineComment',
	                        value: value
	                    };
	                    if (this.trackRange) {
	                        comment.range = e.range;
	                    }
	                    if (this.trackLoc) {
	                        comment.loc = e.loc;
	                    }
	                    this.buffer.push(comment);
	                }
	            }
	            if (!this.scanner.eof()) {
	                var loc = void 0;
	                if (this.trackLoc) {
	                    loc = {
	                        start: {
	                            line: this.scanner.lineNumber,
	                            column: this.scanner.index - this.scanner.lineStart
	                        },
	                        end: {}
	                    };
	                }
	                var startRegex = (this.scanner.source[this.scanner.index] === '/') && this.reader.isRegexStart();
	                var token = startRegex ? this.scanner.scanRegExp() : this.scanner.lex();
	                this.reader.push(token);
	                var entry = {
	                    type: token_1.TokenName[token.type],
	                    value: this.scanner.source.slice(token.start, token.end)
	                };
	                if (this.trackRange) {
	                    entry.range = [token.start, token.end];
	                }
	                if (this.trackLoc) {
	                    loc.end = {
	                        line: this.scanner.lineNumber,
	                        column: this.scanner.index - this.scanner.lineStart
	                    };
	                    entry.loc = loc;
	                }
	                if (token.type === 9 /* RegularExpression */) {
	                    var pattern = token.pattern;
	                    var flags = token.flags;
	                    entry.regex = { pattern: pattern, flags: flags };
	                }
	                this.buffer.push(entry);
	            }
	        }
	        return this.buffer.shift();
	    };
	    return Tokenizer;
	}());
	exports.Tokenizer = Tokenizer;


/***/ }
/******/ ])
});
;
/* --------------------------------------------------------------
         EspruinoTools/libs/esprima/esmangle.js
   -------------------------------------------------------------- */
(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, estraverse, common;

    Name = 'annotate-directive';

    estraverse = require('estraverse');
    common = require('./common');
    Syntax = common.Syntax;

    function isDirective(stmt) {
        var expr;
        if (stmt.type === Syntax.ExpressionStatement) {
            expr = stmt.expression;
            if (expr.type === Syntax.Literal && typeof expr.value === 'string') {
                return true;
            }
        }
        return false;
    }

    function escapeAllowedCharacter(ch, next) {
        var code = ch.charCodeAt(0), hex = code.toString(16), result = '\\';

        switch (ch) {
        case '\b':
            result += 'b';
            break;
        case '\f':
            result += 'f';
            break;
        case '\t':
            result += 't';
            break;
        default:
            if (code > 0xff) {
                result += 'u' + '0000'.slice(hex.length) + hex;
            } else if (ch === '\u0000' && '0123456789'.indexOf(next) < 0) {
                result += '0';
            } else if (ch === '\v') {
                result += 'v';
            } else {
                result += 'x' + '00'.slice(hex.length) + hex;
            }
            break;
        }

        return result;
    }

    function escapeDisallowedCharacter(ch) {
        var result = '\\';
        switch (ch) {
        case '\\':
            result += '\\';
            break;
        case '\n':
            result += 'n';
            break;
        case '\r':
            result += 'r';
            break;
        case '\u2028':
            result += 'u2028';
            break;
        case '\u2029':
            result += 'u2029';
            break;
        default:
            throw new Error('Incorrectly classified character');
        }

        return result;
    }

    function escapeString(str) {
        var result = '', i, len, ch;

        if (typeof str[0] === 'undefined') {
            str = common.stringToArray(str);
        }

        for (i = 0, len = str.length; i < len; i += 1) {
            ch = str[i];
            if (ch === '\'') {
                result += '\\\'';
                continue;
            } else if ('\\\n\r\u2028\u2029'.indexOf(ch) >= 0) {
                result += escapeDisallowedCharacter(ch);
                continue;
            } else if (!(ch >= ' ' && ch <= '~')) {
                result += escapeAllowedCharacter(ch, str[i + 1]);
                continue;
            }
            result += ch;
        }

        return result;
    }

    function annotateDirective(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);

        estraverse.traverse(result, {
            enter: function enter(node, parent) {
                var stmt, i, iz;

                if (!(node.type === Syntax.Program ||
                        (node.type === Syntax.BlockStatement && (parent.type === Syntax.FunctionExpression || parent.type === Syntax.FunctionDeclaration)))) {
                    return;
                }

                for (i = 0, iz = node.body.length; i < iz; ++i) {
                    stmt = node.body[i];
                    if (isDirective(stmt)) {
                        stmt.type = Syntax.DirectiveStatement;
                        if (stmt.expression.raw) {
                            stmt.directive = stmt.expression.raw.substring(1, stmt.expression.raw.length - 1);
                            stmt.value = stmt.expression.value;
                            stmt.raw = stmt.expression.raw;
                        } else {
                            stmt.directive = escapeString(stmt.expression.value);
                            stmt.value = stmt.expression.value;
                            stmt.raw = '\'' + stmt.directive + '\'';
                        }
                        delete stmt.expression;
                    } else {
                        return;
                    }
                }
            }
        });

        return result;
    }

    annotateDirective.passName = Name;
    module.exports = annotateDirective;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./common":2,"estraverse":129}],2:[function(require,module,exports){
/*!
  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
(function () {
    'use strict';

    var Syntax,
        isArray,
        arrayFrom,
        arrayOf,
        has,
        sameValue,
        estraverse,
        escope,
        esutils;

    estraverse = require('estraverse');
    escope = require('escope');
    esutils = require('esutils');
    isArray = require('isarray');

    Syntax = estraverse.Syntax;

    function isObject(obj) {
        return typeof obj === 'object' && obj !== null;
    }

    has = (function () {
        var method = {}.hasOwnProperty;
        return function has(obj, prop) {
            return method.call(obj, prop);
        };
    }());

    // ES6 Array.from
    arrayFrom = (function () {
        var slice = Array.prototype.slice;
        return function arrayFrom(array) {
            return slice.call(array);
        };
    }());

    // ES6 Array.of
    arrayOf = (function () {
        var slice = Array.prototype.slice;
        return function arrayOf() {
            return slice.call(arguments);
        };
    }());

    function arrayLast(array) {
        return array[array.length - 1];
    }

    function arrayEmpty(array) {
        return array.length === 0;
    }

    function stringRepeat(str, num) {
        var result = '';

        for (num |= 0; num > 0; num >>>= 1, str += str) {
            if (num & 1) {
                result += str;
            }
        }

        return result;
    }

    // see http://wiki.ecmascript.org/doku.php?id=harmony:egal
    // ECMA262 SameValue algorithm
    if (Object.is) {
        sameValue = Object.is;
    } else {
        sameValue = function sameValue(x, y) {
            if (x === y) {
                // 0 === -0, but they are not identical
                return x !== 0 || 1 / x === 1 / y;
            }

            // NaN !== NaN, but they are identical.
            // NaNs are the only non-reflexive value, i.e., if x !== x,
            // then x is a NaN.
            // isNaN is broken: it converts its argument to number, so
            // isNaN("foo") => true
            return x !== x && y !== y;
        };
    }

    function deepCopy(obj) {
        function deepCopyInternal(obj, result) {
            var key, val;
            for (key in obj) {
                if (key.lastIndexOf('__', 0) === 0) {
                    continue;
                }
                if (obj.hasOwnProperty(key)) {
                    val = obj[key];
                    if (typeof val === 'object' && val !== null) {
                        if (val instanceof RegExp) {
                            val = new RegExp(val);
                        } else {
                            val = deepCopyInternal(val, isArray(val) ? [] : {});
                        }
                    }
                    result[key] = val;
                }
            }
            return result;
        }
        return deepCopyInternal(obj, isArray(obj) ? [] : {});
    }

    function assert(cond, text) {
        if (!cond) {
            throw new Error(text);
        }
    }

    function unreachable() {
        throw new Error('Unreachable point. logically broken.');
    }

    function isIdentifier(name) {
        // fallback for ES3
        if (esutils.keyword.isKeywordES5(name, true) || esutils.keyword.isRestrictedWord(name)) {
            return false;
        }

        return esutils.keyword.isIdentifierNameES5(name);
    }

    function mayBeCompletionValue(node, ancestors) {
        var i, ancestor;

        if (node.type !== Syntax.ExpressionStatement) {
            return true;
        }

        for (i = ancestors.length - 1; i >= 0; --i, node = ancestor) {
            ancestor = ancestors[i];

            switch (ancestor.type) {
            case Syntax.FunctionExpression:
            case Syntax.FunctionDeclaration:
                return false;

            case Syntax.BlockStatement:
            case Syntax.Program:
                if (arrayLast(ancestor.body) !== node) {
                    return false;
                }
                break;

            case Syntax.SwitchCase:
                if (arrayLast(ancestor.consequent) !== node) {
                    return false;
                }
                break;
            }
        }

        return true;
    }

    function moveLocation(from, to) {
        if (from.loc == null) {
            return to;
        }
        to.loc = deepCopy(from.loc);
        return to;
    }

    function deleteLocation(node) {
        if (node.hasOwnProperty('loc')) {
            return delete node.loc;
        }
        return false;
    }

    function convertToEmptyStatement(node) {
        var i, iz, keys;
        keys = estraverse.VisitorKeys[node.type];
        for (i = 0, iz = keys.length; i < iz; ++i) {
            delete node[keys[i]];
        }
        node.type = Syntax.EmptyStatement;
        return node;
    }

    function isNegative(value) {
        return value === value && (value < 0 || (value === 0 && 1 / value < 0));
    }

    function isFunctionBody(node, parent) {
        return node.type === Syntax.BlockStatement && (parent.type === Syntax.FunctionDeclaration || parent.type === Syntax.FunctionExpression);
    }

    function isNumberLiteral(node) {
        return node.type === Syntax.Literal && typeof node.value === 'number';
    }

    function isOptimizedArgument(argument) {
        return isNumberLiteral(argument) && String(argument.value).length === 1;
    }

    function generateNegativeNode(value, node) {
        var result;
        result = {
            type: Syntax.UnaryExpression,
            operator: '-',
            argument: {
                type: Syntax.Literal,
                value: -value
            }
        };
        return (node) ? moveLocation(node, result) : result;
    }

    function isNegativeNode(node) {
        return node.type === Syntax.UnaryExpression && node.operator === '-' && isNumberLiteral(node.argument);
    }

    function generateUndefined(node) {
        var result = {
            type: Syntax.UnaryExpression,
            operator: 'void',
            argument: {
                type: Syntax.Literal,
                value: 0
            }
        };
        return (node) ? moveLocation(node, result) : result;
    }

    function isUndefined(node) {
        return node.type === Syntax.UnaryExpression && node.operator === 'void' && isOptimizedArgument(node.argument);
    }

    function generateNaN(node) {
        var result = {
            type: Syntax.BinaryExpression,
            operator: '/',
            left: {
                type: Syntax.Literal,
                value: 0
            },
            right: {
                type: Syntax.Literal,
                value: 0
            }
        };
        return (node) ? moveLocation(node, result) : result;
    }

    function isNaNNode(node) {
        if (node.type === Syntax.BinaryExpression) {
            if (isOptimizedArgument(node.left) && isOptimizedArgument(node.right)) {
                return node.left.value === 0 && node.right.value === 0;
            }
        }
        return false;
    }

    function generateFromValue(value) {
        if (typeof value === 'number') {
            if (isNaN(value)) {
                return generateNaN();
            }
            if (isNegative(value)) {
                return generateNegativeNode(value);
            }
        }
        if (value === undefined) {
            return generateUndefined();
        }
        return {
            type: Syntax.Literal,
            value: value
        };
    }

    function isReference(node) {
        var type = node.type;
        return type === Syntax.Identifier || type === Syntax.MemberExpression;
    }

    // @param last last element of SequenceExpression
    // @param parent parent element of SequenceExpression
    // @param scope scope
    function canExtractSequence(last, parent, scope) {
        var ref;
        if (parent.type === Syntax.CallExpression) {
            if (last.type === Syntax.Identifier) {
                if (last.name === 'eval') {
                    // This becomes direct call to eval.
                    return false;
                }
                ref = scope.resolve(last);
                return ref && ref.isStatic();
            }
            return last.type !== Syntax.MemberExpression;
        } else if (parent.type === Syntax.UnaryExpression) {
            if (parent.operator === 'delete') {
                return !isReference(last);
            } else if (parent.operator === 'typeof') {
                if (last.type === Syntax.Identifier) {
                    ref = scope.resolve(last);
                    return ref && ref.isStatic();
                }
            }
        } else if (parent.type === Syntax.UpdateExpression) {
            return !isReference(last);
        }
        return true;
    }

    function isFunctionNode(node) {
        return node.type === Syntax.Program ||
            node.type === Syntax.FunctionDeclaration ||
            node.type === Syntax.FunctionExpression ||
            node.type === Syntax.ArrowFunctionExpression;
    }

    function delegateVariableDeclarations(stmt, func) {
        var decls, target;

        decls = [];

        estraverse.traverse(stmt, {
            enter: function (node) {
                var i, iz, decl;
                if (node.type === Syntax.VariableDeclaration) {
                    if (node.kind === 'let' || node.kind === 'const') {
                        return;
                    }
                    for (i = 0, iz = node.declarations.length; i < iz; ++i) {
                        decl = node.declarations[i];
                        delete decl.init;
                        decls.push(decl);
                    }
                    return this.skip();
                } else if (isFunctionNode(node)) {
                    return this.skip();
                }
            }
        });

        if (!decls.length) {
            return null;
        }

        target = null;

        estraverse.traverse(func.body, {
            enter: function (node, parent) {
                if (node === stmt) {
                    return this.skip();
                }

                if (isFunctionNode(node)) {
                    return this.skip();
                }

                if (node.type === Syntax.VariableDeclaration && node.kind === 'var') {
                    // list is not allowed
                    if (parent.type !== Syntax.ForInStatement) {
                        target = node;
                        return this['break']();
                    }
                }
            }
        });

        if (target) {
            target.declarations = target.declarations.concat(decls);
            return null;
        } else {
            return {
                type: Syntax.VariableDeclaration,
                kind: 'var',
                declarations: decls
            };
        }
    }

    function isScopedDeclaration(node) {
        if (node.type === Syntax.VariableDeclaration && (node.kind === 'let' || node.kind === 'const')) {
            return true;
        } else if (node.type === Syntax.FunctionDeclaration) {
            return true;
        }
        return false;
    }

    exports.deepCopy = deepCopy;
    exports.stringRepeat = stringRepeat;
    exports.sameValue = sameValue;

    exports.Array = {
        from: arrayFrom,
        of: arrayOf,
        last: arrayLast,
        empty: arrayEmpty
    };

    exports.Object = {
        isObject: isObject,
        has: has
    };

    exports.Syntax = Syntax;

    exports.assert = assert;
    exports.unreachable = unreachable;

    exports.isIdentifier = isIdentifier;

    exports.moveLocation = moveLocation;
    exports.deleteLocation = deleteLocation;
    exports.convertToEmptyStatement = convertToEmptyStatement;

    exports.mayBeCompletionValue = mayBeCompletionValue;

    exports.isNegative = isNegative;
    exports.isFunctionNode = isFunctionNode;

    exports.isFunctionBody = isFunctionBody;
    exports.SpecialNode = {
        generateNegative: generateNegativeNode,
        isNegative: isNegativeNode,
        generateUndefined: generateUndefined,
        isUndefined: isUndefined,
        generateNaN: generateNaN,
        isNaN: isNaNNode,
        isReference: isReference,
        canExtractSequence: canExtractSequence,
        generateFromValue: generateFromValue
    };

    exports.delegateVariableDeclarations = delegateVariableDeclarations;

    exports.isScopedDeclaration = isScopedDeclaration;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"escope":115,"estraverse":129,"esutils":134,"isarray":139}],3:[function(require,module,exports){
/*!
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global exports:true*/

(function () {
    'use strict';

    var camelCase,
        esshorten,
        estraverse,
        esutils,
        isArray,
        common,
        Options,
        Syntax,
        Pass,
        annotateDirective;

    camelCase = require('camel-case');
    esshorten = require('esshorten2');
    estraverse = require('estraverse');
    esutils = require('esutils');
    isArray = require('isarray');
    common = require('./common');
    Options = require('./options');
    Pass = require('./pass');
    annotateDirective = require('./annotate-directive');
    Syntax = common.Syntax;

    // recover some broken AST

    function recover(tree, useDirectiveStatement) {
        estraverse.traverse(tree, {
            leave: function leave(node) {
                if (esutils.ast.isProblematicIfStatement(node)) {
                    node.consequent = {
                        type: Syntax.BlockStatement,
                        body: [ node.consequent ]
                    };
                }
                if (!useDirectiveStatement && node.type === Syntax.DirectiveStatement) {
                    node.type = Syntax.ExpressionStatement;
                    node.expression = common.moveLocation(node, {
                        type: Syntax.Literal,
                        value: node.value,
                        raw: node.raw
                    });
                    delete node.directive;
                    delete node.value;
                    delete node.raw;
                }
            }
        });

        return tree;
    }

    function iteration(tree, p, options) {
        var i, iz, pass, res, changed, statuses, passes, result;

        function addPass(pass) {
            var name, camelCaseName;
            if (typeof pass !== 'function') {
                // automatic lookup pass (esmangle pass format)
                name = Object.keys(pass)[0];
                pass = pass[name];
            }
            if (pass.hasOwnProperty('passName')) {
                name = pass.passName;
            } else {
                name = pass.name;
            }
            camelCaseName = camelCase(name);
            if (typeof options.data.passes === 'undefined' ||
                    options.data.passes[camelCaseName]) {
                passes.push(pass);
                statuses.push(true);
            }
        }

        function fillStatuses(bool) {
            var i, iz;
            for (i = 0, iz = statuses.length; i < iz; ++i) {
                statuses[i] = bool;
            }
        }

        result = (options.get('destructive')) ? tree : common.deepCopy(tree);

        statuses = [];
        passes = [];


        for (i = 0, iz = p.length; i < iz; ++i) {
            addPass(p[i]);
        }

        do {
            changed = false;
            for (i = 0, iz = passes.length; i < iz; ++i) {
                pass = passes[i];
                if (statuses[i]) {
                    res = pass(result, options);
                    if (res.modified) {
                        changed = true;
                        fillStatuses(true);
                    } else {
                        statuses[i] = false;
                    }
                    result = res.result;
                }
            }
        } while (changed);

        return result;
    }

    function optimize(tree, pipeline, options) {
        var i, iz, j, jz, section, pass, passName;

        options = new Options(options);
        tree = annotateDirective(tree, new Options({ destructive: options.data.destructive }));

        if (null == pipeline) {
            pipeline = Pass.__defaultPipeline;
        }

        for (i = 0, iz = pipeline.length; i < iz; ++i) {
            section = pipeline[i];
            // simple iterative pass
            if (isArray(section)) {
                tree = iteration(tree, section, options);
            } else if (section.once) {
                pass = section.pass;
                for (j = 0, jz = pass.length; j < jz; ++j) {
                    passName = camelCase(pass[j].passName);
                    if (typeof options.data.passes === 'undefined' ||
                            options.data.passes[passName]) {
                        tree = pass[j](tree, options).result;
                    }
                }
            }
        }

        return recover(tree, options.get('directive'));
    }

    exports.version = require('../package.json').version;
    exports.mangle = esshorten.mangle;
    exports.optimize = optimize;
    exports.pass = Pass;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../package.json":159,"./annotate-directive":1,"./common":2,"./options":6,"./pass":7,"camel-case":44,"esshorten2":125,"estraverse":129,"esutils":134,"isarray":139}],4:[function(require,module,exports){
/*
  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jshint eqeqeq:false*/
(function () {
    'use strict';

    var Syntax, common;

    common = require('./common');
    Syntax = common.Syntax;

    // constant

    function isConstant(node, allowRegExp) {
        if (node.type === Syntax.Literal) {
            if (typeof node.value === 'object' && node.value !== null) {
                // This is RegExp
                return allowRegExp;
            }
            return true;
        }
        if (node.type === Syntax.UnaryExpression) {
            if (node.operator === 'void' || node.operator === 'delete' || node.operator === '!') {
                return isConstant(node.argument, true);
            }
            return isConstant(node.argument, false);
        }
        if (node.type === Syntax.BinaryExpression) {
            if (node.operator === 'in' || node.operator === 'instanceof') {
                return false;
            }
            return isConstant(node.left, false) && isConstant(node.right, false);
        }
        if (node.type === Syntax.LogicalExpression) {
            return isConstant(node.left, true) && isConstant(node.right, true);
        }
        return false;
    }

    function getConstant(node) {
        if (node.type === Syntax.Literal) {
            return node.value;
        }
        if (node.type === Syntax.UnaryExpression) {
            return doUnary(node.operator, getConstant(node.argument));
        }
        if (node.type === Syntax.BinaryExpression) {
            return doBinary(node.operator, getConstant(node.left), getConstant(node.right));
        }
        if (node.type === Syntax.LogicalExpression) {
            return doLogical(node.operator, getConstant(node.left), getConstant(node.right));
        }
        common.unreachable();
    }

    function doLogical(operator, left, right) {
        if (operator === '||') {
            return left || right;
        }
        if (operator === '&&') {
            return left && right;
        }
        common.unreachable();
    }

    function doUnary(operator, argument) {
        switch (operator) {
        case '+':
            return +argument;
        case '-':
            return -argument;
        case '~':
            return ~argument;
        case '!':
            return !argument;
        case 'delete':
            // do delete on constant value (not considering identifier in this tree based constant folding)
            return true;
        case 'void':
            return undefined;
        case 'typeof':
            return typeof argument;
        }
        common.unreachable();
    }

    function doBinary(operator, left, right) {
        switch (operator) {
        case '|':
            return left | right;
        case '^':
            return left ^ right;
        case '&':
            return left & right;
        case '==':
            return left == right;
        case '!=':
            return left != right;
        case '===':
            return left === right;
        case '!==':
            return left !== right;
        case '<':
            return left < right;
        case '>':
            return left > right;
        case '<=':
            return left <= right;
        case '>=':
            return left >= right;
        // case 'in':
        //    return left in right;
        // case 'instanceof':
        //    return left instanceof right;
        case '<<':
            return left << right;
        case '>>':
            return left >> right;
        case '>>>':
            return left >>> right;
        case '+':
            return left + right;
        case '-':
            return left - right;
        case '*':
            return left * right;
        case '/':
            return left / right;
        case '%':
            return left % right;
        }
        common.unreachable();
    }

    exports.constant = {
        doBinary: doBinary,
        doUnary: doUnary,
        doLogical: doLogical,
        evaluate: getConstant,
        isConstant: isConstant
    };

    // has side effect
    function hasSideEffect(expr, scope) {
        function visit(expr) {
            var i, iz, ref;
            switch (expr.type) {
            case Syntax.AssignmentExpression:
                return true;

            case Syntax.ArrayExpression:
                for (i = 0, iz = expr.elements.length; i < iz; ++i) {
                    if (expr.elements[i] !== null && visit(expr.elements[i])) {
                        return true;
                    }
                }
                return false;

            case Syntax.BinaryExpression:
                return !isConstant(expr);

            case Syntax.CallExpression:
                return true;

            case Syntax.ConditionalExpression:
                return visit(expr.test) || visit(expr.consequent) || visit(expr.alternate);

            case Syntax.FunctionExpression:
                return false;

            case Syntax.Identifier:
                ref = scope.resolve(expr);
                if (ref && ref.isStatic()) {
                    return false;
                }
                return true;

            case Syntax.Literal:
                return false;

            case Syntax.LogicalExpression:
                return visit(expr.left) || visit(expr.right);

            case Syntax.MemberExpression:
                return true;

            case Syntax.NewExpression:
                return true;

            case Syntax.ObjectExpression:
                for (i = 0, iz = expr.properties.length; i < iz; ++i) {
                    if (visit(expr.properties[i])) {
                        return true;
                    }
                }
                return false;

            case Syntax.Property:
                return visit(expr.value);

            case Syntax.SequenceExpression:
                for (i = 0, iz = expr.expressions.length; i < iz; ++i) {
                    if (visit(expr.expressions[i])) {
                        return true;
                    }
                }
                return false;

            case Syntax.ThisExpression:
                return false;

            case Syntax.UnaryExpression:
                if (expr.operator === 'void' || expr.operator === 'delete' || expr.operator === 'typeof' || expr.operator === '!') {
                    return visit(expr.argument);
                }
                return !isConstant(expr);

            case Syntax.UpdateExpression:
                return true;
            }
            return true;
        }

        return visit(expr);
    }

    exports.hasSideEffect = hasSideEffect;

    // boolean decision
    // @return {boolean|null} when indeterminate value comes, returns null
    function booleanCondition(expr) {
        var ret;
        switch (expr.type) {
        case Syntax.AssignmentExpression:
            return booleanCondition(expr.right);

        case Syntax.ArrayExpression:
            return true;

        case Syntax.BinaryExpression:
            if (isConstant(expr)) {
                return !!getConstant(expr);
            }
            return null;

        case Syntax.CallExpression:
            return null;

        case Syntax.ConditionalExpression:
            ret = booleanCondition(expr.test);
            if (ret === true) {
                return booleanCondition(expr.consequent);
            }
            if (ret === false) {
                return booleanCondition(expr.alternate);
            }
            ret = booleanCondition(expr.consequent);
            if (ret === booleanCondition(expr.alternate)) {
                return ret;
            }
            return null;

        case Syntax.FunctionExpression:
            return true;

        case Syntax.Identifier:
            return null;

        case Syntax.Literal:
            return !!getConstant(expr);

        case Syntax.LogicalExpression:
            if (expr.operator === '&&') {
                ret = booleanCondition(expr.left);
                if (ret === null) {
                    return null;
                }
                if (!ret) {
                    return false;
                }
                return booleanCondition(expr.right);
            } else {
                ret = booleanCondition(expr.left);
                if (ret === null) {
                    return null;
                }
                if (ret) {
                    return true;
                }
                return booleanCondition(expr.right);
            }
            return null;

        case Syntax.MemberExpression:
            return null;

        case Syntax.NewExpression:
            // always return object
            return true;

        case Syntax.ObjectExpression:
            return true;

        case Syntax.Property:
            common.unreachable();
            return null;

        case Syntax.SequenceExpression:
            return booleanCondition(common.Array.last(expr.expressions));

        case Syntax.ThisExpression:
            // in strict mode, this may be null / undefined
            return null;

        case Syntax.UnaryExpression:
            if (expr.operator === 'void') {
                return false;
            }
            if (expr.operator === 'typeof') {
                return true;
            }
            if (expr.operator === '!') {
                ret = booleanCondition(expr.argument);
                if (ret === null) {
                    return null;
                }
                return !ret;
            }
            if (isConstant(expr)) {
                return !!getConstant(expr);
            }
            return null;

        case Syntax.UpdateExpression:
            return null;
        }

        return null;
    }

    exports.booleanCondition = booleanCondition;
}());

},{"./common":2}],5:[function(require,module,exports){
(function (global){
/*
  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*global module:true*/
(function () {
    'use strict';

    var Map;

    if (typeof global.Map !== 'undefined') {
        // ES6 Map
        Map = global.Map;
    } else {
        Map = function Map() {
            this.__data = {};
        };

        Map.prototype.get = function MapGet(key) {
            key = '$' + key;
            if (this.__data.hasOwnProperty(key)) {
                return this.__data[key];
            }
        };

        Map.prototype.has = function MapHas(key) {
            key = '$' + key;
            return this.__data.hasOwnProperty(key);
        };

        Map.prototype.set = function MapSet(key, val) {
            key = '$' + key;
            this.__data[key] = val;
        };

        Map.prototype['delete'] = function MapDelete(key) {
            key = '$' + key;
            return delete this.__data[key];
        };

        Map.prototype.clear = function MapClear() {
            this.__data = {};
        };

        Map.prototype.forEach = function MapForEach(callback, thisArg) {
            var real, key;
            for (real in this.__data) {
                if (this.__data.hasOwnProperty(real)) {
                    key = real.substring(1);
                    callback.call(thisArg, this.__data[real], key, this);
                }
            }
        };

        Map.prototype.keys = function MapKeys() {
            var real, result;
            result = [];
            for (real in this.__data) {
                if (this.__data.hasOwnProperty(real)) {
                    result.push(real.substring(1));
                }
            }
            return result;
        };

        Map.prototype.values = function MapValues() {
            var real, result;
            result = [];
            for (real in this.__data) {
                if (this.__data.hasOwnProperty(real)) {
                    result.push(this.__data[real]);
                }
            }
            return result;
        };

        Map.prototype.items = function MapItems() {
            var real, result;
            result = [];
            for (real in this.__data) {
                if (this.__data.hasOwnProperty(real)) {
                    result.push([real.substring(1), this.__data[real]]);
                }
            }
            return result;
        };
    }

    module.exports = Map;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],6:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
(function () {
    'use strict';

    var common;

    common = require('./common');

    function extend(result, update) {
        var prop, lhs, rhs;

        for (prop in update) {
            if (!common.Object.has(update, prop)) {
                continue;
            }

            if (prop in result) {
                lhs = result[prop];
                rhs = update[prop];
                if (common.Object.isObject(rhs) && common.Object.isObject(lhs)) {
                    result[prop] = extend(lhs, rhs);
                } else {
                    result[prop] = update[prop];
                }
            } else {
                result[prop] = update[prop];
            }
        }

        return result;
    }

    function Options(override) {
        var defaults = {
            destructive: true,
            preserveCompletionValue: false,
            legacy: true,
            topLevelContext: 'global',  // Specifies 'global', 'module', 'function' etc.
            inStrictCode: false         // Top level is strict or not
        };

        if (override == null) {
            this.data = defaults;
            return;
        }

        this.data = extend(defaults, override);
    }

    // options.get(name, {
    //   pathName: pathName
    // });
    Options.prototype.get = function get(name, details) {
        var local;
        if (details != null) {
            if (common.Object.has(details, 'pathName')) {
                local = this.data[details.pathName];
                if (local != null && common.Object.has(local, name)) {
                    return local[name];
                }
            }
        }
        return this.data[name];
    };

    module.exports = Options;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./common":2}],7:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global exports:true*/

(function () {
    'use strict';

    var query, Registry, pass, post, common;

    common = require('./common');
    query = require('./query');

    Registry = {};
    Registry.__direct = {};

    // initialization

    function initialize(kind, passes) {
        var i, iz, pass;
        Registry[kind] = {};
        for (i = 0, iz = passes.length; i < iz; ++i) {
            pass = passes[i];
            common.assert(Registry[kind][pass.passName] == null, 'don\'t create duplicate pass names');
            Registry[kind][pass.passName] = pass;
        }
        common.assert(Registry.__direct[pass.passName] == null, 'don\'t create duplicate pass names');
        Registry.__direct[pass.passName] = pass;
    }

    pass = [
        require('./pass/hoist-variable-to-arguments'),
        require('./pass/transform-dynamic-to-static-property-access'),
        require('./pass/transform-dynamic-to-static-property-definition'),
        require('./pass/transform-immediate-function-call'),
        require('./pass/transform-logical-association'),
        require('./pass/reordering-function-declarations'),
        require('./pass/remove-unused-label'),
        require('./pass/remove-empty-statement'),
        require('./pass/remove-wasted-blocks'),
        require('./pass/transform-to-compound-assignment'),
        require('./pass/transform-to-sequence-expression'),
        require('./pass/transform-branch-to-expression'),
        require('./pass/transform-typeof-undefined'),
        require('./pass/reduce-sequence-expression'),
        require('./pass/reduce-branch-jump'),
        require('./pass/reduce-multiple-if-statements'),
        require('./pass/dead-code-elimination'),
        require('./pass/remove-side-effect-free-expressions'),
        require('./pass/remove-context-sensitive-expressions'),
        require('./pass/tree-based-constant-folding'),
        require('./pass/concatenate-variable-definition'),
        require('./pass/drop-variable-definition'),
        require('./pass/remove-unreachable-branch'),
        require('./pass/eliminate-duplicate-function-declarations'),
        require('./pass/typeof-prefix-comparison'),
        require('./pass/top-level-variable-declaration-to-assignment'),
    ];

    post = [
        require('./post/transform-static-to-dynamic-property-access'),
        require('./post/transform-infinity'),
        require('./post/rewrite-boolean'),
        require('./post/rewrite-conditional-expression'),
        require('./post/omit-parens-in-void-context-iife')
    ];

    initialize('pass', pass);
    initialize('post', post);

    function passRequire(name) {
        if (common.Object.has(Registry.__direct, name)) {
            return Registry.__direct[name];
        }
        return query.get(Registry, name.split('/'));
    }

    exports.require = passRequire;
    exports.Registry = Registry;

    // CAUTION:(Constellation)
    // This API would be changed
    exports.__defaultPipeline = [
        pass,
        {
            once: true,
            pass: post
        }
    ];
}());

},{"./common":2,"./pass/concatenate-variable-definition":8,"./pass/dead-code-elimination":9,"./pass/drop-variable-definition":10,"./pass/eliminate-duplicate-function-declarations":11,"./pass/hoist-variable-to-arguments":12,"./pass/reduce-branch-jump":13,"./pass/reduce-multiple-if-statements":14,"./pass/reduce-sequence-expression":15,"./pass/remove-context-sensitive-expressions":16,"./pass/remove-empty-statement":17,"./pass/remove-side-effect-free-expressions":18,"./pass/remove-unreachable-branch":19,"./pass/remove-unused-label":20,"./pass/remove-wasted-blocks":21,"./pass/reordering-function-declarations":22,"./pass/top-level-variable-declaration-to-assignment":23,"./pass/transform-branch-to-expression":24,"./pass/transform-dynamic-to-static-property-access":25,"./pass/transform-dynamic-to-static-property-definition":26,"./pass/transform-immediate-function-call":27,"./pass/transform-logical-association":28,"./pass/transform-to-compound-assignment":29,"./pass/transform-to-sequence-expression":30,"./pass/transform-typeof-undefined":31,"./pass/tree-based-constant-folding":32,"./pass/typeof-prefix-comparison":33,"./post/omit-parens-in-void-context-iife":34,"./post/rewrite-boolean":35,"./post/rewrite-conditional-expression":36,"./post/transform-infinity":37,"./post/transform-static-to-dynamic-property-access":38,"./query":39}],8:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, estraverse, common, modified;

    Name = 'concatenate-variable-definition';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function concatenateVariableDefinition(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        estraverse.traverse(result, {
            leave: function leave(node) {
                var i, iz, j, jz, stmt, decl, target, body;
                if (node.type !== Syntax.BlockStatement && node.type !== Syntax.Program) {
                    return;
                }

                // concat sequencial variable definition to one
                target = null;
                body = [];

                for (i = 0, iz = node.body.length; i < iz; ++i) {
                    stmt = node.body[i];
                    if (stmt.type === Syntax.VariableDeclaration && stmt.kind === 'var') {
                        if (!target) {
                            target = stmt;
                            body.push(stmt);
                            continue;
                        }

                        modified = true;
                        for (j = 0, jz = stmt.declarations.length; j < jz; ++j) {
                            decl = stmt.declarations[j];
                            target.declarations.push(decl);
                        }
                    } else {
                        target = null;
                        body.push(stmt);
                    }
                }

                node.body = body;
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    concatenateVariableDefinition.passName = Name;
    module.exports = concatenateVariableDefinition;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],9:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name,
        Syntax,
        estraverse,
        common,
        status,
        modified;

    Name = 'dead-code-elimination';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function JumpTarget(node, status, type) {
        this.node = node;
        this.type = type;
        this.labels = status.labels || [];
        status.labels = null;
    }

    JumpTarget.NAMED_ONLY = 0;  // (00)2
    JumpTarget.ITERATION = 2;   // (10)2
    JumpTarget.SWITCH = 3;      // (11)2

    JumpTarget.prototype.isIteration = function isIteration() {
        return this.type === JumpTarget.ITERATION;
    };

    JumpTarget.prototype.isAnonymous = function isAnonymous() {
        return this.type & 2;
    };

    JumpTarget.prototype.contains = function contains(label) {
        return this.labels.indexOf(label) !== -1;
    };

    function Jumps() {
        this.targets = [];
    }

    Jumps.prototype.lookupContinuableTarget = function lookupContinuableTarget(label) {
        var i, target;
        for (i = this.targets.length - 1; i >= 0; --i) {
            target = this.targets[i];
            if (target.isIteration() && (!label || target.contains(label.name))) {
                return target.node;
            }
        }
        common.unreachable();
    };

    Jumps.prototype.lookupBreakableTarget = function lookupBreakableTarget(label) {
        var i, target;
        for (i = this.targets.length - 1; i >= 0; --i) {
            target = this.targets[i];
            if (label) {
                if (target.contains(label.name)) {
                    return target.node;
                }
            } else {
                if (target.isAnonymous()) {
                    return target.node;
                }
            }
        }
        common.unreachable();
    };

    Jumps.prototype.push = function push(target) {
        this.targets.push(target);
    };

    Jumps.prototype.pop = function pop() {
        this.targets.pop();
    };

    // Status implementation
    //
    // This is based on Constellation/iv lv5 railgun compiler continuation_status.h

    function Status(upper) {
        this.current = [];
        this.upper = upper;
        this.jumps = new Jumps();
        this.labels = null;
        this.next();
    }

    Status.NEXT = {};

    Status.prototype.insert = function insert(stmt) {
        this.current.push(stmt);
    };

    Status.prototype.erase = function erase(stmt) {
        var index = this.current.indexOf(stmt);
        if (index === -1) {
            return false;
        }
        this.current.splice(index, 1);
        return true;
    };

    Status.prototype.kill = function kill() {
        return this.erase(Status.NEXT);
    };

    Status.prototype.has = function has(stmt) {
        return this.current.indexOf(stmt) !== -1;
    };

    Status.prototype.jumpTo = function jumpTo(stmt) {
        this.kill();
        this.insert(stmt);
    };

    Status.prototype.resolveJump = function resolveJump(stmt) {
        var index = this.current.indexOf(stmt);
        if (index !== -1) {
            this.current.splice(index, 1);
            this.insert(Status.NEXT);
        }
    };

    Status.prototype.clear = function clear() {
        this.current.length = 0;
    };

    Status.prototype.next = function next() {
        this.insert(Status.NEXT);
    };

    Status.prototype.isDead = function isDead() {
        return !this.has(Status.NEXT);
    };

    Status.prototype.revive = function revive() {
        if (this.isDead()) {
            this.next();
            return true;
        }
        return false;
    };

    Status.prototype.register = function register(node) {
        if (!this.labels) {
            this.labels = [];
        }
        this.labels.push(node.label.name);
    };

    Status.prototype.unregister = function unregister() {
        this.labels = null;
    };

    Status.isRequired = function isRequired(node) {
        var type = node.type;
        common.assert(node, 'should be node');
        return type === Syntax.Program ||
            type === Syntax.FunctionExpression ||
            type === Syntax.FunctionDeclaration ||
            type === Syntax.ArrowFunctionExpression;
    };

    function Context(node) {
        node.__$context = this;
        this.node = node;
    }

    Context.prototype.detach = function detach() {
        delete this.node.__$context;
    };

    Context.lookup = function lookup(node) {
        return node.__$context;
    };

    function getForwardLastNode(node) {
        while (true) {
            switch (node.type) {
            case Syntax.IfStatement:
                if (node.alternate) {
                    return null;
                }
                node = node.consequent;
                continue;

            case Syntax.WithStatement:
            case Syntax.LabeledStatement:
                node = node.body;
                continue;
            case Syntax.BlockStatement:
                if (node.body.length) {
                    node = common.Array.last(node.body);
                    continue;
                }
                break;
            }
            return node;
        }
    }

    function visitLoopBody(loop, body) {
        var jump, last;
        last = getForwardLastNode(body);
        if (last) {
            if (last.type === Syntax.ContinueStatement) {
                jump = status.jumps.lookupContinuableTarget(last.label);
                if (jump === loop) {
                    // this continue is dead code
                    modified = true;
                    common.convertToEmptyStatement(last);
                }
            }
        }
        return visit(body);
    }

    function visit(target) {
        var live = false;

        if (!target) {
            return !status.isDead();
        }

        function eliminate(node, array) {
            var i, iz, stmt, ret, info, result;
            result = [];
            for (i = 0, iz = array.length; i < iz; ++i) {
                stmt = array[i];
                if (stmt.type === Syntax.IfStatement) {
                    info = new Context(stmt);
                    ret = visit(stmt);
                    info.detach();
                } else {
                    ret = visit(stmt);
                }
                if (ret) {
                    live |= 1;
                    result.push(stmt);

                    // we transform
                    //     if (cond) {
                    //         #1
                    //         return;
                    //     } else
                    //         #2;
                    //     #3
                    //  to
                    //     if (cond) {
                    //         #1
                    //         return;
                    //     }
                    //     #2
                    //     #3
                    //
                    // and
                    //
                    //     if (cond)
                    //         #1;
                    //     else {
                    //         #2
                    //         return;
                    //     }
                    //     #3
                    //  to
                    //     if (!cond) {
                    //         #2
                    //         return;
                    //     }
                    //     #1
                    //     #3
                    if (stmt.type === Syntax.IfStatement && stmt.alternate) {
                        if ((!info.consequent || !info.alternate) && info.consequent !== info.alternate) {
                            modified = true;
                            if (info.consequent) {
                                stmt.test = common.moveLocation(stmt.test, {
                                    type: Syntax.UnaryExpression,
                                    operator: '!',
                                    argument: stmt.test
                                });
                                result.push(stmt.consequent);
                                stmt.consequent = stmt.alternate;
                                stmt.alternate = null;
                            } else {  // info.alternate
                                result.push(stmt.alternate);
                                stmt.alternate = null;
                            }
                        }
                    }
                } else {
                    // deleted
                    modified = true;
                }
            }
            return result;
        }

        estraverse.traverse(target, {
            enter: function enter(node) {
                var i, iz, stmt, consequent, alternate, ctx, hasDefaultClause, handlers;
                if (Status.isRequired(node)) {
                    status = new Status(status);
                }

                live |= !status.isDead();

                switch (node.type) {
                case Syntax.Program:
                    node.body = eliminate(node, node.body);
                    return this.skip();

                case Syntax.BlockStatement:
                    status.jumps.push(new JumpTarget(node, status, JumpTarget.NAMED_ONLY));
                    node.body = eliminate(node, node.body);
                    status.jumps.pop();

                    status.resolveJump(node);
                    return this.skip();

                case Syntax.BreakStatement:
                    // like
                    //   label: break label;
                    // we treat as like empty statement
                    if (node.label && status.labels && status.labels.indexOf(node.label)) {
                        // change this statement to empty statement
                        modified = true;
                        common.convertToEmptyStatement(node);
                    } else {
                        status.jumpTo(status.jumps.lookupBreakableTarget(node.label));
                    }
                    return this.skip();

                case Syntax.CatchClause:
                    live |= visit(node.body);
                    return this.skip();

                case Syntax.ContinueStatement:
                    status.jumpTo(status.jumps.lookupContinuableTarget(node.label));
                    return this.skip();

                case Syntax.DoWhileStatement:
                    status.jumps.push(new JumpTarget(node, status, JumpTarget.ITERATION));
                    live |= visitLoopBody(node, node.body);
                    status.jumps.pop();

                    live |= visit(node.test);
                    status.resolveJump(node);
                    status.revive();
                    return this.skip();

                case Syntax.DebuggerStatement:
                    return this.skip();

                case Syntax.EmptyStatement:
                    return this.skip();

                case Syntax.ExpressionStatement:
                    break;

                case Syntax.ForStatement:
                    live |= visit(node.init);
                    live |= visit(node.test);

                    status.jumps.push(new JumpTarget(node, status, JumpTarget.ITERATION));
                    live |= visitLoopBody(node, node.body);
                    status.jumps.pop();

                    live |= visit(node.update);
                    status.resolveJump(node);
                    status.revive();
                    return this.skip();

                case Syntax.ForInStatement:
                    live |= visit(node.left);
                    live |= visit(node.right);

                    status.jumps.push(new JumpTarget(node, status, JumpTarget.ITERATION));
                    live |= visitLoopBody(node, node.body);
                    status.jumps.pop();

                    status.resolveJump(node);
                    status.revive();
                    return this.skip();

                case Syntax.IfStatement:
                    live |= visit(node.test);
                    live |= visit(node.consequent);
                    if (!node.alternate) {
                        status.revive();
                        return this.skip();
                    }

                    consequent = !status.isDead();
                    if (!status.revive()) {
                        status.insert(node);
                    }

                    live |= visit(node.alternate);
                    alternate = !status.isDead();
                    if (status.erase(node)) {
                        status.revive();
                    }
                    if ((ctx = Context.lookup(node))) {
                        ctx.consequent = consequent;
                        ctx.alternate = alternate;
                    }
                    return this.skip();

                case Syntax.LabeledStatement:
                    status.register(node);
                    break;

                case Syntax.ReturnStatement:
                    live |= visit(node.argument);
                    status.kill();
                    return this.skip();

                case Syntax.SwitchStatement:
                    visit(node.discriminant);

                    status.jumps.push(new JumpTarget(node, status, JumpTarget.SWITCH));
                    for (i = 0, iz = node.cases.length; i < iz; ++i) {
                        stmt = node.cases[i];
                        live |= visit(stmt);
                        if (!stmt.test) {
                            hasDefaultClause = true;
                        }
                        if (status.isDead() && (i + 1) < iz) {
                            status.next();
                        }
                    }
                    status.jumps.pop();

                    status.resolveJump(node);
                    if (status.isDead() && !hasDefaultClause) {
                        status.next();
                    }
                    return this.skip();

                case Syntax.SwitchCase:
                    if (node.test) {
                        live |= visit(node.test);
                    }
                    node.consequent = eliminate(node, node.consequent);
                    return this.skip();

                case Syntax.ThrowStatement:
                    live |= visit(node.argument);
                    status.kill();
                    return this.skip();

                case Syntax.TryStatement:
                    live |= visit(node.block);

                    // NOTE: TryStatement interface changed from {handlers: [CatchClause]} to {handler: CatchClause}; we support both
                    handlers = node.handlers || (node.handler ? [node.handler] : []);
                    if (handlers && handlers.length) {
                        if (!status.revive()) {
                            status.insert(node);
                        }
                        handlers = eliminate(node, handlers);
                        node.handler = handlers.shift();
                        delete node.handlers;
                        if (status.erase(node)) {
                            status.revive();
                        }
                    }

                    if (node.finalizer) {
                        if (!status.revive()) {
                            status.insert(node);
                        }
                        live |= visit(node.finalizer);
                        if (!status.erase(node)) {
                            status.kill();
                        }
                    }
                    return this.skip();

                case Syntax.WhileStatement:
                    live |= visit(node.test);

                    status.jumps.push(new JumpTarget(node, status, JumpTarget.ITERATION));
                    live |= visitLoopBody(node, node.body);
                    status.jumps.pop();

                    status.resolveJump(node);
                    status.revive();
                    return this.skip();

                case Syntax.WithStatement:
                    break;

                case Syntax.VariableDeclaration:
                case Syntax.FunctionDeclaration:
                    live = true;
                    break;
                }
            },

            leave: function leave(node) {
                if (Status.isRequired(node)) {
                    status = status.upper;
                    return;
                }

                if (node.type === Syntax.LabeledStatement) {
                    status.unregister();
                }
            }
        });

        return live;
    }

    // This is iv / lv5 / railgun bytecode compiler dead code elimination algorithm
    function deadCodeElimination(tree, options) {
        var result;

        result = (options.get('destructive', { pathName: Name })) ? tree : common.deepCopy(tree);

        status = null;
        modified = false;

        visit(result);

        common.assert(status === null, 'status should be null');

        return {
            result: result,
            modified: modified
        };
    }

    deadCodeElimination.passName = Name;
    module.exports = deadCodeElimination;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],10:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, modified, estraverse, escope, evaluator;

    Name = 'drop-variable-definition';

    estraverse = require('estraverse');
    escope = require('escope');
    common = require('../common');
    evaluator = require('../evaluator');
    Syntax = common.Syntax;

    function getCandidates(scope) {
        var i, iz, j, jz, identifiers, slots, v;

        if (!scope.candidates) {
            slots = [];
            identifiers = [];
            for (i = 0, iz = scope.variables.length; i < iz; ++i) {
                v = scope.variables[i];
                for (j = 0, jz = v.identifiers.length; j < jz; ++j) {
                    identifiers.push(v.identifiers[j]);
                    slots.push(v);
                }
            }

            scope.candidates = {
                slots: slots,
                identifiers: identifiers
            };
        }

        return scope.candidates;
    }

    function isRemovableDefinition(slot) {
        var i, iz, ref, parent;
        if (slot.identifiers.length !== 1) {
            return false;
        }

        if (slot.references.length === 0) {
            return true;
        }

        for (i = 0, iz = slot.references.length; i < iz; ++i) {
            ref = slot.references[i];
            if (ref.isRead()) {
                return false;
            }
            if (ref.isWrite()) {
                if (!ref.writeExpr) {
                    return false;
                }
                parent = ref.writeExpr.__$parent$__;
                if (!parent) {
                    return false;
                }
                if (parent.type !== Syntax.AssignmentExpression &&
                    parent.type !== Syntax.VariableDeclarator) {
                    return false;
                }
                if (evaluator.hasSideEffect(ref.writeExpr, ref.from)) {
                    return false;
                }
            }
        }

        return true;
    }

    function overrideExpression(from, to) {
        var key;
        for (key in from) {
            delete from[key];
        }
        for (key in to) {
            from[key] = to[key];
        }
        return from;
    }

    function removeDefinition(node, index, slot) {
        var i, iz, ref, parent;

        // remove from declaration list
        node.declarations.splice(index, 1);
        for (i = 0, iz = slot.references.length; i < iz; ++i) {
            ref = slot.references[i];
            common.assert(!ref.isRead());
            if (ref.isWrite()) {
                parent = ref.writeExpr.__$parent$__;
                if (parent.type === Syntax.AssignmentExpression) {
                    overrideExpression(ref.writeExpr.__$parent$__, ref.writeExpr);
                }
            }
        }
    }

    function attachParent(tree) {
        return estraverse.traverse(tree, {
            enter: function (node, parent) {
                node.__$parent$__ = parent;
            }
        });
    }

    function removeParent(tree) {
        return estraverse.traverse(tree, {
            enter: function (node) {
                delete node.__$parent$__;
                delete node.__$escope$__;
            }
        });
    }

    function dropVariableDefinition(tree, options) {
        var result, manager, scope;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;
        scope = null;

        manager = escope.analyze(result, { directive: true });
        manager.attach();
        attachParent(result);

        result = estraverse.replace(result, {
            enter: function enter(node, parent) {
                var i, decl, cand, index, slot, ret;
                ret = node;
                if (scope) {
                    if (scope.variableScope.isStatic()) {
                        cand = getCandidates(scope.variableScope);

                        // remove unused variable
                        if (node.type === Syntax.VariableDeclaration && node.kind === 'var') {
                            i = node.declarations.length;
                            while (i--) {
                                decl = node.declarations[i];
                                index = cand.identifiers.indexOf(decl.id);
                                if (index !== -1) {
                                    slot = cand.slots[index];
                                    if (isRemovableDefinition(slot)) {
                                        // ok, remove this variable
                                        modified = true;
                                        removeDefinition(node, i, slot);
                                        continue;
                                    }
                                }
                            }
                            if (node.declarations.length === 0) {
                                if (parent.type === Syntax.ForStatement) {
                                    ret = null;
                                } else {
                                    ret = common.moveLocation(node, {
                                        type: Syntax.EmptyStatement
                                    });
                                }
                            }
                        }

                        // remove unused function declaration
                        if (node.type === Syntax.FunctionDeclaration) {
                            index = cand.identifiers.indexOf(node.id);
                            if (index !== -1) {
                                slot = cand.slots[index];
                                if (slot.identifiers.length === 1 && slot.references.length === 0) {
                                    // ok, remove this function declaration
                                    modified = true;
                                    ret = common.moveLocation(node, {
                                        type: Syntax.EmptyStatement
                                    });
                                    return ret;
                                }
                            }
                        }
                    }
                }

                scope = manager.acquire(node) || scope;
                return ret;
            },
            leave: function leave(node) {
                scope = manager.release(node) || scope;
            }
        });

        manager.detach();
        removeParent(result);

        return {
            result: result,
            modified: modified
        };
    }

    dropVariableDefinition.passName = Name;
    module.exports = dropVariableDefinition;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"../evaluator":4,"escope":115,"estraverse":129}],11:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, Map, common, estraverse, modified;

    Name = 'eliminate-duplicate-function-declarations';

    estraverse = require('estraverse');
    common = require('../common');
    Map = require ('../map');

    Syntax = common.Syntax;

    function unique(map, root) {
        return estraverse.replace(root, {
            enter: function (node) {
                var name, info;
                if (node.type === Syntax.FunctionDeclaration) {
                    name = node.id.name;
                    info = map.get(name);
                    --info.count;
                    if (info.count !== 0) {
                        // Duplicate function declaration.
                        modified = true;
                        return common.moveLocation(node, { type: Syntax.EmptyStatement });
                    }
                }

                if (node !== root && node.type === Syntax.BlockStatement) {
                    return this.skip();
                }
            }
        });
    }

    function uniqueInGlobal(map, root) {
        return estraverse.replace(root, {
            enter: function (node) {
                var name, info, first;
                if (node.type === Syntax.FunctionDeclaration) {
                    name = node.id.name;
                    info = map.get(name);
                    first = info.count === info.declarations.length;
                    --info.count;
                    if (info.declarations.length > 1) {
                        if (first) {
                            // replace the first declaration with the last declaration
                            modified = true;
                            return common.Array.last(info.declarations);
                        } else {
                            modified = true;
                            return common.moveLocation(node, { type: Syntax.EmptyStatement });
                        }
                    }
                }

                if (node !== root && node.type === Syntax.BlockStatement) {
                    return this.skip();
                }
            }
        });
    }

    function main(tree, options) {
        var result, stack, functionDepth, globalBlockFound;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;
        functionDepth = 0;
        globalBlockFound = false;

        stack = [ new Map() ];

        result = estraverse.replace(result, {
            enter: function enter(node) {
                var map, name, info;
                if (node.type === Syntax.FunctionDeclaration) {
                    name = node.id.name;
                    map = common.Array.last(stack);
                    if (map.has(name)) {
                        info = map.get(name);
                        info.declarations.push(node);
                        ++info.count;
                    } else {
                        info = {
                            declarations: [ node ],
                            count: 1
                        };
                        map.set(name, info);
                    }
                }

                // To support Block scoped FunctionDeclaration (ES6)
                // Syntax.FunctionExpression and Syntax.FunctionDeclaration also hold block.
                if (node.type === Syntax.BlockStatement) {
                    stack.push(new Map());
                }
                if (node.type === Syntax.FunctionDeclaration || node.type === Syntax.FunctionExpression) {
                    ++functionDepth;
                }
            },
            leave: function leave(node) {
                var map, ret;
                if (node.type === Syntax.BlockStatement) {
                    map = stack.pop();
                    if (functionDepth === 0) {
                        if (map.keys().length !== 0) {
                            globalBlockFound = true;
                        }
                    } else {
                        ret = unique(map, node);
                    }
                }
                if (node.type === Syntax.FunctionDeclaration || node.type === Syntax.FunctionExpression) {
                    --functionDepth;
                }
                return ret;
            }
        });

        // If we had global block that contains function declaration, we
        // suppress this optimization on global code.
        common.assert(stack.length === 1, 'global map remains');
        if (!globalBlockFound) {
            result = uniqueInGlobal(stack[0], result);
        }

        return {
            result: result,
            modified: modified
        };
    }

    main.passName = Name;
    module.exports = main;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"../map":5,"estraverse":129}],12:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, escope, modified;

    Name = 'hoist-variable-to-arguments';

    escope = require('escope');
    estraverse = require('estraverse');
    common = require('../common');

    Syntax = common.Syntax;

    function hoist(callee) {
        function hoisting(ident) {
            var hoisted, i, iz;
            hoisted = false;
            for (i = 0, iz = callee.params.length; i < iz; ++i) {
                if (ident.name === callee.params[i].name) {
                    // already hoisted name
                    hoisted = true;
                    break;
                }
            }
            if (!hoisted) {
                callee.params.push(ident);
            }
        }

        callee.body = estraverse.replace(callee.body, {
            enter: function (node, parent) {
                var i, iz, expressions, declaration, forstmt, expr;

                if (node.type === Syntax.FunctionExpression || node.type === Syntax.FunctionDeclaration) {
                    this.skip();
                    return;
                }

                if (node.type === Syntax.VariableDeclaration && node.kind === 'var') {
                    // We should consider following pattern
                    //
                    //   for (var i = 0;;);
                    // or
                    //   for (var i in []);
                    // specialize pass for `for-in`
                    if (parent.type === Syntax.ForInStatement) {
                        common.assert(node.declarations.length === 1, 'for-in declaration length should be 1');
                        declaration = node.declarations[0];
                        // not optimize
                        //   for (var i = 1 in []);
                        if (declaration.init) {
                            return;
                        }

                        // TODO(Constellation)
                        // in the future, destructuring pattern may come
                        if (declaration.id.type !== Syntax.Identifier) {
                            return;
                        }
                        hoisting(declaration.id);
                        modified = true;
                        return declaration.id;
                    }

                    forstmt = parent.type === Syntax.ForStatement;

                    expressions = [];
                    for (i = 0, iz = node.declarations.length; i < iz; ++i) {
                        declaration = node.declarations[i];

                        // TODO(Constellation)
                        // in the future, destructuring pattern may come
                        if (declaration.id.type !== Syntax.Identifier) {
                            return;
                        }
                        hoisting(declaration.id);
                        if (declaration.init) {
                            expressions.push(common.moveLocation(declaration, {
                                type: Syntax.AssignmentExpression,
                                operator: '=',
                                left: declaration.id,
                                right: declaration.init
                            }));
                        }
                    }

                    modified = true;
                    if (expressions.length === 0) {
                        if (forstmt) {
                            return null;
                        }
                        return common.moveLocation(node, {
                            type: Syntax.EmptyStatement
                        });
                    }

                    if (expressions.length === 1) {
                        expr = expressions[0];
                    } else {
                        expr = common.moveLocation(node, {
                            type: Syntax.SequenceExpression,
                            expressions: expressions
                        });
                    }

                    if (forstmt) {
                        return expr;
                    }

                    return common.moveLocation(node, {
                        type: Syntax.ExpressionStatement,
                        expression: expr
                    });
                }
            }
        });
    }

    function hoistVariableToArguments(tree, options) {
        var result, scope, manager;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;
        scope = null;

        manager = escope.analyze(result, { directive: true });
        manager.attach();

        estraverse.traverse(result, {
            enter: function enter(node) {
                var callee;
                if (node.type === Syntax.CallExpression || node.type === Syntax.NewExpression) {
                    callee = node.callee;
                    if (callee.type === Syntax.FunctionExpression && !callee.id) {
                        if (callee.params.length === node['arguments'].length) {
                            scope = manager.acquire(callee);
                            if (!scope.isArgumentsMaterialized() && (node.type !== Syntax.NewExpression || !scope.isThisMaterialized())) {
                                // ok, arguments is not used
                                hoist(callee);
                            }
                        }
                    }
                }
            }
        });

        manager.detach();

        return {
            result: result,
            modified: modified
        };
    }

    hoistVariableToArguments.passName = Name;
    module.exports = hoistVariableToArguments;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"escope":115,"estraverse":129}],13:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, modified;

    Name = 'reduce-branch-jump';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function reduceLast(ary, index) {
        var node, left;
        node = ary[index];
        if (node.type === Syntax.IfStatement) {
            if (!node.alternate) {
                if (node.consequent.type === Syntax.ReturnStatement) {
                    modified = true;
                    left = node.consequent.argument;
                    if (!left) {
                        ary[index] = common.moveLocation(node, {
                            type: Syntax.ReturnStatement,
                            argument: {
                                type: Syntax.SequenceExpression,
                                expressions: [
                                    node.test,
                                    common.SpecialNode.generateUndefined()
                                ]
                            }
                        });
                        return true;
                    }
                    ary[index] = common.moveLocation(node, {
                        type: Syntax.ReturnStatement,
                        argument: {
                            type: Syntax.ConditionalExpression,
                            test: node.test,
                            consequent: left,
                            alternate: common.SpecialNode.generateUndefined()
                        }
                    });
                    return true;
                }
            }
        }
    }

    function reduce(ary, index) {
        var node, sibling, left, right;
        node = ary[index];
        sibling = ary[index + 1];
        if (node.type === Syntax.IfStatement) {
            if (!node.alternate) {
                if (node.consequent.type === Syntax.ReturnStatement && sibling.type === Syntax.ReturnStatement) {
                    // pattern:
                    //     if (cond) return v;
                    //     return v2;
                    modified = true;
                    ary.splice(index, 1);
                    left = node.consequent.argument;
                    right = sibling.argument;
                    if (!left && !right) {
                        ary[index] = common.moveLocation(node, {
                            type: Syntax.ReturnStatement,
                            argument: {
                                type: Syntax.SequenceExpression,
                                expressions: [
                                    node.test,
                                    common.SpecialNode.generateUndefined()
                                ]
                            }
                        });
                        return true;
                    }
                    if (!left) {
                        left = common.SpecialNode.generateUndefined();
                    }
                    if (!right) {
                        right = common.SpecialNode.generateUndefined();
                    }
                    ary[index] = common.moveLocation(node, {
                        type: Syntax.ReturnStatement,
                        argument: {
                            type: Syntax.ConditionalExpression,
                            test: node.test,
                            consequent: left,
                            alternate: right
                        }
                    });
                    return true;
                }
            }
        }
        return false;
    }

    function reduceBranchJump(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        estraverse.traverse(result, {
            leave: function leave(node, parent) {
                var i;
                switch (node.type) {
                case Syntax.BlockStatement:
                case Syntax.Program:
                    i = 0;
                    while (i < (node.body.length - 1)) {
                        if (!reduce(node.body, i)) {
                            ++i;
                        }
                    }

                    if (common.isFunctionBody(node, parent)) {
                        if (node.body.length > 0) {
                            i = node.body.length - 1;
                            reduceLast(node.body, i);
                        }
                    }
                    break;

                case Syntax.SwitchCase:
                    i = 0;
                    while (i < (node.consequent.length - 1)) {
                        if (!reduce(node.consequent, i)) {
                            ++i;
                        }
                    }
                    break;
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    reduceBranchJump.passName = Name;
    module.exports = reduceBranchJump;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],14:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, estraverse, common, modified;

    Name = 'reduce-multiple-if-statements';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function reduceMultipleIfStatements(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        estraverse.traverse(result, {
            leave: function leave(node) {
                // reduce
                //     if (cond) {
                //         if (cond2) {
                //             ...
                //         }
                //     }
                // to
                //     if (cond && cond2) {
                //         ...
                //     }
                if (node.type === Syntax.IfStatement && !node.alternate &&
                    node.consequent.type === Syntax.IfStatement && !node.consequent.alternate) {
                    modified = true;
                    node.test = {
                        type: Syntax.LogicalExpression,
                        operator: '&&',
                        left: node.test,
                        right: node.consequent.test
                    };
                    node.consequent = node.consequent.consequent;
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    reduceMultipleIfStatements.passName = Name;
    module.exports = reduceMultipleIfStatements;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],15:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, evaluator, estraverse, escope, modified;

    Name = 'reduce-sequence-expression';

    estraverse = require('estraverse');
    escope = require('escope');
    common = require('../common');
    evaluator = require('../evaluator');
    Syntax = common.Syntax;

    function reduce(node) {
        var i, iz, j, jz, expr, result;
        result = [];
        for (i = 0, iz = node.expressions.length; i < iz; ++i) {
            expr = node.expressions[i];
            if (expr.type === Syntax.SequenceExpression) {
                modified = true;
                // delete SequenceExpression location information,
                // because information of SequenceExpression is not used effectively in source-map.
                common.deleteLocation(node);
                for (j = 0, jz = expr.expressions.length; j < jz; ++j) {
                    result.push(expr.expressions[j]);
                }
            } else {
                result.push(expr);
            }
        }
        node.expressions = result;
    }

    function isLoadSideEffectFree(node, scope) {
        var ref, value;
        if (evaluator.constant.isConstant(node)) {
            value = evaluator.constant.evaluate(node);
            if (value === null || typeof value !== 'object') {
                return true;
            }
        }
        if (node.type === Syntax.Identifier) {
            ref = scope.resolve(node);
            return ref && ref.isStatic();
        }
        return false;
    }

    function isStoreSideEffectFree(node, scope) {
        if (!evaluator.hasSideEffect(node, scope)) {
            return true;
        }
        if (node.type === Syntax.Identifier) {
            return true;
        }
        if (node.type === Syntax.MemberExpression) {
            if (!evaluator.hasSideEffect(node.object, scope)) {
                // Because of toString operation
                if (!node.computed || isLoadSideEffectFree(node.property, scope)) {
                    return true;
                }
            }
            return false;
        }
        return false;
    }

    function reduceSequenceExpression(tree, options) {
        var result, scope, manager;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;
        scope = null;

        manager = escope.analyze(result, { directive: true });
        manager.attach();

        result = estraverse.replace(result, {
            enter: function enter(node) {
                scope = manager.acquire(node) || scope;
            },
            leave: function leave(node) {
                var result, last;
                switch (node.type) {
                case Syntax.SequenceExpression:
                    reduce(node);
                    break;

                case Syntax.ConditionalExpression:
                    if (node.test.type === Syntax.SequenceExpression) {
                        modified = true;
                        result = node.test;
                        node.test = common.Array.last(result.expressions);
                        result.expressions[result.expressions.length - 1] = node;
                    }
                    break;

                case Syntax.LogicalExpression:
                    if (node.left.type === Syntax.SequenceExpression) {
                        modified = true;
                        result = node.left;
                        node.left = common.Array.last(result.expressions);
                        result.expressions[result.expressions.length - 1] = node;
                    }
                    break;

                case Syntax.BinaryExpression:
                    if (node.left.type === Syntax.SequenceExpression) {
                        modified = true;
                        result = node.left;
                        node.left = common.Array.last(result.expressions);
                        result.expressions[result.expressions.length - 1] = node;
                    } else if (node.right.type === Syntax.SequenceExpression && !evaluator.hasSideEffect(node.left, scope)) {
                        modified = true;
                        result = node.right;
                        node.right = common.Array.last(result.expressions);
                        result.expressions[result.expressions.length - 1] = node;
                    }
                    break;

                case Syntax.UpdateExpression:
                case Syntax.UnaryExpression:
                    if (node.argument.type === Syntax.SequenceExpression) {
                        // Don't transform
                        //   typeof (0, ident)
                        // to
                        //   0, typeof ident
                        //
                        //   delete (0, 1, t.t)
                        // to
                        //   delete t.t
                        last = common.Array.last(node.argument.expressions);
                        if (!common.SpecialNode.canExtractSequence(last, node, scope)) {
                            break;
                        }
                        modified = true;
                        result = node.argument;
                        node.argument = common.Array.last(result.expressions);
                        result.expressions[result.expressions.length - 1] = node;
                    }
                    break;

                case Syntax.AssignmentExpression:
                    if (node.operator === '=' && node.right.type === Syntax.SequenceExpression && isStoreSideEffectFree(node.left, scope)) {
                        modified = true;
                        result = node.right;
                        node.right = common.Array.last(result.expressions);
                        result.expressions[result.expressions.length - 1] = node;
                    }
                    break;
                }
                scope = manager.release(node) || scope;
                return result;
            }
        });

        manager.detach();

        return {
            result: result,
            modified: modified
        };
    }

    reduceSequenceExpression.passName = Name;
    module.exports = reduceSequenceExpression;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"../evaluator":4,"escope":115,"estraverse":129}],16:[function(require,module,exports){
/*
  Copyright (C) 2012 Mihai Bazon <mihai.bazon@gmail.com>
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, evaluator, escope, estraverse, modified;

    Name = 'remove-context-sensitive-expressions';

    estraverse = require('estraverse');
    escope = require('escope');
    common = require('../common');
    evaluator = require('../evaluator');
    Syntax = common.Syntax;


    function Transformer(trans, booleanFunction, voidFunction, scope) {
        this.transform = trans;
        this.booleanFunction = booleanFunction;
        this.voidFunction = voidFunction;
        this.scope = scope;
    }

    Transformer.prototype.booleanTransformation = function (expr) {
        var consequent;
        do {
            if (expr.type === Syntax.UnaryExpression) {
                if (expr.operator === '!' &&
                    expr.argument.type === Syntax.UnaryExpression && expr.argument.operator === '!') {
                    modified = true;
                    expr = expr.argument.argument;
                    continue;
                }
            } else if (expr.type === Syntax.LogicalExpression) {
                if (expr.left.type === Syntax.UnaryExpression && expr.left.operator === '!' &&
                    expr.right.type === Syntax.UnaryExpression && expr.right.operator === '!') {
                    // !cond && !ok() => !(cond || ok())
                    // this introduces more optimizations
                    modified = true;
                    expr.left = expr.left.argument;
                    expr.right = expr.right.argument;
                    expr.operator = (expr.operator === '||') ? '&&' : '||';
                    expr = common.moveLocation(expr, {
                        type: Syntax.UnaryExpression,
                        operator: '!',
                        argument: expr
                    });
                    continue;
                }
            } else if (expr.type === Syntax.ConditionalExpression) {
                if (expr.test.type === Syntax.UnaryExpression && expr.test.operator === '!') {
                    modified = true;
                    expr.test = expr.test.argument;
                    consequent = expr.consequent;
                    expr.consequent = expr.alternate;
                    expr.alternate = consequent;
                }
            }
            break;
        } while (true);
        return expr;
    };

    Transformer.prototype.voidTransformation = function (expr) {
        var leftHasSideEffect, rightHasSideEffect;
        do {
            expr = this.booleanTransformation(expr);
            if (expr.type === Syntax.UnaryExpression) {
                if (expr.operator === '!' || expr.operator === 'void') {
                    modified = true;
                    expr = expr.argument;
                    continue;
                }
            } else if (expr.type === Syntax.LogicalExpression) {
                if (expr.left.type === Syntax.UnaryExpression && expr.left.operator === '!') {
                    // !cond && ok() => cond || ok()
                    modified = true;
                    expr.left = expr.left.argument;
                    expr.operator = (expr.operator === '||') ? '&&' : '||';
                }
            } else if (expr.type === Syntax.ConditionalExpression) {
                // a?0:1 => a
                // a?0:b => a||b
                // a?b:0 => a&&b
                leftHasSideEffect = evaluator.hasSideEffect(expr.consequent, this.scope);
                rightHasSideEffect = evaluator.hasSideEffect(expr.alternate, this.scope);
                if (!leftHasSideEffect && !rightHasSideEffect) {
                    modified = true;
                    expr = expr.test;
                } else if (!leftHasSideEffect) {
                    modified = true;
                    expr = common.moveLocation(expr, {
                        type: Syntax.LogicalExpression,
                        operator: '||',
                        left: expr.test,
                        right: expr.alternate
                    });
                } else if (!rightHasSideEffect) {
                    modified = true;
                    expr = common.moveLocation(expr, {
                        type: Syntax.LogicalExpression,
                        operator: '&&',
                        left: expr.test,
                        right: expr.consequent
                    });
                }
            }
            break;
        } while (true);
        return expr;
    };

    Transformer.prototype.apply = function (expr) {
        var prev;
        do {
            prev = expr;
            expr = this.transform(expr);
            if (prev !== expr) {
                continue;
            }

            if (expr.type === Syntax.LogicalExpression) {
                expr.left = this.booleanFunction(expr.left, this.scope);
                expr.right = this.voidFunction(expr.right, this.scope);
            } else if (expr.type === Syntax.ConditionalExpression) {
                expr.consequent = this.voidFunction(expr.consequent, this.scope);
                expr.alternate = this.voidFunction(expr.alternate, this.scope);
            } else if (expr.type === Syntax.SequenceExpression) {
                expr.expressions[expr.expressions.length - 1] = this.voidFunction(common.Array.last(expr.expressions), this.scope);
            }
            break;
        } while (true);
        return expr;
    };

    function voidContext(expr, scope) {
        var trans = new Transformer(Transformer.prototype.voidTransformation, booleanContext, voidContext, scope);
        return trans.apply(expr);
    }

    function booleanContext(expr, scope) {
        var trans = new Transformer(Transformer.prototype.booleanTransformation, booleanContext, booleanContext, scope);
        return trans.apply(expr);
    }

    function removeContextSensitiveExpressions(tree, options) {
        var result, stackCount, preserveCompletionValue, scope, manager;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;
        stackCount = 0;
        preserveCompletionValue = options.get('preserveCompletionValue', { pathName: Name });

        scope = null;
        manager = escope.analyze(result, { directive: true });
        manager.attach();

        result = estraverse.replace(result, {
            enter: function enter(node) {
                var i, iz;

                scope = manager.acquire(node) || scope;

                if (node.type === Syntax.FunctionExpression || node.type === Syntax.FunctionDeclaration) {
                    ++stackCount;
                }

                switch (node.type) {
                case Syntax.AssignmentExpression:
                    break;

                case Syntax.ArrayExpression:
                    break;

                case Syntax.BlockStatement:
                    break;

                case Syntax.BinaryExpression:
                    break;

                case Syntax.BreakStatement:
                    break;

                case Syntax.CallExpression:
                    break;

                case Syntax.CatchClause:
                    break;

                case Syntax.ConditionalExpression:
                    node.test = booleanContext(node.test, scope);
                    break;

                case Syntax.ContinueStatement:
                    break;

                case Syntax.DoWhileStatement:
                    node.test = booleanContext(node.test, scope);
                    break;

                case Syntax.DebuggerStatement:
                    break;

                case Syntax.EmptyStatement:
                    break;

                case Syntax.ExpressionStatement:
                    if (!preserveCompletionValue || stackCount !== 0) {
                        // not global context
                        node.expression = voidContext(node.expression, scope);
                    }
                    break;

                case Syntax.FunctionExpression:
                    break;

                case Syntax.ForInStatement:
                    break;

                case Syntax.FunctionDeclaration:
                    break;

                case Syntax.ForStatement:
                    if (node.init && node.init.type !== Syntax.VariableDeclaration) {
                        node.init = voidContext(node.init, scope);
                    }
                    if (node.test) {
                        node.test = booleanContext(node.test, scope);
                    }
                    if (node.update) {
                        node.update = voidContext(node.update, scope);
                    }
                    break;

                case Syntax.Identifier:
                    break;

                case Syntax.IfStatement:
                    node.test = booleanContext(node.test, scope);
                    break;

                case Syntax.Literal:
                    break;

                case Syntax.LabeledStatement:
                    break;

                case Syntax.LogicalExpression:
                    break;

                case Syntax.MemberExpression:
                    break;

                case Syntax.NewExpression:
                    break;

                case Syntax.ObjectExpression:
                    break;

                case Syntax.Program:
                    break;

                case Syntax.Property:
                    break;

                case Syntax.ReturnStatement:
                    break;

                case Syntax.SequenceExpression:
                    for (i = 0, iz = node.expressions.length - 1; i < iz; ++i) {
                        node.expressions[i] = voidContext(node.expressions[i], scope);
                    }
                    break;

                case Syntax.SwitchStatement:
                    break;

                case Syntax.SwitchCase:
                    break;

                case Syntax.ThisExpression:
                    break;

                case Syntax.ThrowStatement:
                    break;

                case Syntax.TryStatement:
                    break;

                case Syntax.UnaryExpression:
                    if (node.operator === '!') {
                        node.argument = booleanContext(node.argument, scope);
                    } else if (node.operator === 'void') {
                        node.argument = voidContext(node.argument, scope);
                    }
                    break;

                case Syntax.UpdateExpression:
                    break;

                case Syntax.VariableDeclaration:
                    break;

                case Syntax.VariableDeclarator:
                    break;

                case Syntax.WhileStatement:
                    node.test = booleanContext(node.test, scope);
                    break;

                case Syntax.WithStatement:
                    break;

                }
            },

            leave: function leave(node) {
                scope = manager.release(node) || scope;
                if (node.type === Syntax.FunctionExpression || node.type === Syntax.FunctionDeclaration) {
                    --stackCount;
                }
            }
        });

        manager.detach();

        return {
            result: result,
            modified: modified
        };
    }

    removeContextSensitiveExpressions.passName = Name;
    module.exports = removeContextSensitiveExpressions;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"../evaluator":4,"escope":115,"estraverse":129}],17:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, estraverse, common, modified;

    Name = 'remove-empty-statement';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function remove(array) {
        var i, iz, node, result;
        result = [];
        for (i = 0, iz = array.length; i < iz; ++i) {
            node = array[i];
            if (node.type === Syntax.EmptyStatement) {
                modified = true;
            } else {
                result.push(node);
            }
        }
        return result;
    }

    function removeAlternate(node) {
        if (node.alternate) {
            if (node.alternate.type === Syntax.EmptyStatement) {
                modified = true;
                node.alternate = null;
            } else if (node.consequent.type === Syntax.EmptyStatement) {
                modified = true;
                node.consequent = node.alternate;
                node.alternate = null;
                node.test = common.moveLocation(node.test, {
                    type: Syntax.UnaryExpression,
                    operator: '!',
                    argument: node.test
                });
            }
        }
    }

    function removeEmptyStatement(tree, options) {
        var result;

        modified = false;
        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);

        estraverse.traverse(result, {
            enter: function enter(node) {
                var clause;
                switch (node.type) {
                case Syntax.BlockStatement:
                case Syntax.Program:
                    node.body = remove(node.body);
                    break;

                case Syntax.SwitchCase:
                    node.consequent = remove(node.consequent);
                    break;

                case Syntax.IfStatement:
                    removeAlternate(node);
                    break;

                // drop unused default block
                case Syntax.SwitchStatement:
                    if (node.cases.length) {
                        clause = common.Array.last(node.cases);
                        if (!clause.test && common.Array.empty(clause.consequent)) {
                            // this is wasted default case
                            modified = true;
                            node.cases.pop();
                        }
                    }
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    removeEmptyStatement.passName = Name;
    module.exports = removeEmptyStatement;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],18:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, escope, evaluator, modified;

    Name = 'remove-side-effect-free-expressions';

    estraverse = require('estraverse');
    escope = require('escope');
    common = require('../common');
    evaluator = require('../evaluator');
    Syntax = common.Syntax;

    function reduce(node, scope, parent, isResultNeeded) {
        var i, iz, expr, result, prev;

        common.assert(node.expressions.length > 1, 'expressions should be more than one');

        result = [];
        for (i = 0, iz = node.expressions.length; i < iz; ++i) {
            prev = expr;
            expr = node.expressions[i];
            if (((i + 1) !== iz) || !isResultNeeded) {
                if (!evaluator.hasSideEffect(expr, scope)) {
                    continue;
                }
            }
            result.push(expr);
        }

        if (!isResultNeeded && result.length === 0) {
            modified = true;
            return expr;
        }

        common.assert(result.length > 0, 'result should be more than zero');

        // not changed
        do {
            if (iz === result.length) {
                return node;
            }

            if (result.length === 1) {
                if (!common.SpecialNode.canExtractSequence(result[0], parent, scope)) {
                    result.unshift(prev);
                    continue;
                }
                modified = true;
                return result[0];
            }
            modified = true;
            node.expressions = result;
            return node;
        } while (true);
    }

    function removeSideEffectFreeExpressions(tree, options) {
        var result, scope, manager, preserveCompletionValue;

        function isResultNeeded(parent, scope) {
            if (parent.type === Syntax.ExpressionStatement && (!preserveCompletionValue || scope.type !== 'global')) {
                return false;
            }
            return true;
        }

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        preserveCompletionValue = options.get('preserveCompletionValue', { pathName: Name });
        modified = false;
        scope = null;
        manager = escope.analyze(result, { directive: true });
        manager.attach();

        result = estraverse.replace(result, {
            enter: function enter(node, parent) {
                var res, unary, trans;

                res = node;
                scope = manager.acquire(node) || scope;
                if (res.type === Syntax.SequenceExpression) {
                    res = reduce(res, scope, parent, isResultNeeded(parent, scope));
                }

                if (res.type === Syntax.SequenceExpression) {
                    common.assert(res.expressions.length > 1, 'sequences\' length should be more than 1');
                    unary = common.Array.last(res.expressions);
                    if (unary.type === Syntax.UnaryExpression && unary.operator === 'void' && !evaluator.hasSideEffect(unary.argument, scope)) {
                        // (x, void sideEffectFree) => (void x)
                        modified = true;
                        res.expressions.pop();
                        trans = common.moveLocation(unary, {
                            type: Syntax.UnaryExpression,
                            operator: 'void',
                            argument: common.Array.last(res.expressions)
                        });
                        if (res.expressions.length === 1) {
                            res = trans;
                        } else {
                            res.expressions[res.expressions.length - 1] = trans;
                        }
                    }
                }

                // Because eval code should return last evaluated value in
                // ExpressionStatement, we should not remove.
                if (!isResultNeeded(res, scope)) {
                    if (!evaluator.hasSideEffect(res.expression, scope)) {
                        modified = true;
                        res = common.moveLocation(res, {
                            type: Syntax.EmptyStatement
                        });
                    }
                }
                return res;
            },
            leave: function leave(node) {
                scope = manager.release(node) || scope;
            }
        });

        manager.detach();

        return {
            result: result,
            modified: modified
        };
    }

    removeSideEffectFreeExpressions.passName = Name;
    module.exports = removeSideEffectFreeExpressions;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"../evaluator":4,"escope":115,"estraverse":129}],19:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, escope, evaluator, modified;

    Name = 'remove-unreachable-branch';

    estraverse = require('estraverse');
    escope = require('escope');
    common = require('../common');
    evaluator = require('../evaluator');
    Syntax = common.Syntax;

    function handleIfStatement(func, node) {
        var test, body, decl;
        test = evaluator.booleanCondition(node.test);
        if (!node.alternate) {
            if (typeof test === 'boolean') {
                modified = true;
                body = [];

                if (test) {
                    body.push(common.moveLocation(node.test, {
                        type: Syntax.ExpressionStatement,
                        expression: node.test
                    }), node.consequent);
                    return {
                        type: Syntax.BlockStatement,
                        body: body
                    };
                } else {
                    decl = common.delegateVariableDeclarations(node.consequent, func);
                    if (decl) {
                        body.push(decl);
                    }
                    body.push(common.moveLocation(node.test, {
                        type: Syntax.ExpressionStatement,
                        expression: node.test
                    }));
                    return {
                        type: Syntax.BlockStatement,
                        body: body
                    };
                }
            }
        } else {
            if (typeof test === 'boolean') {
                modified = true;
                body = [];

                if (test) {
                    decl = common.delegateVariableDeclarations(node.alternate, func);
                    if (decl) {
                        body.push(decl);
                    }
                    body.push(common.moveLocation(node.test, {
                        type: Syntax.ExpressionStatement,
                        expression: node.test
                    }), node.consequent);
                    return {
                        type: Syntax.BlockStatement,
                        body: body
                    };
                } else {
                    decl = common.delegateVariableDeclarations(node.consequent, func);
                    if (decl) {
                        body.push(decl);
                    }
                    body.push(common.moveLocation(node.test, {
                        type: Syntax.ExpressionStatement,
                        expression: node.test
                    }), node.alternate);
                    return {
                        type: Syntax.BlockStatement,
                        body: body
                    };
                }
            }
        }
    }

    function handleLogicalExpression(func, node) {
        var test;
        test = evaluator.booleanCondition(node.left);
        if (typeof test === 'boolean') {
            modified = true;
            if (test) {
                if (node.operator === '&&') {
                    return common.moveLocation(node, {
                        type: Syntax.SequenceExpression,
                        expressions: [ node.left, node.right ]
                    });
                } else {
                    return node.left;
                }
            } else {
                if (node.operator === '&&') {
                    return node.left;
                } else {
                    return common.moveLocation(node, {
                        type: Syntax.SequenceExpression,
                        expressions: [ node.left, node.right ]
                    });
                }
            }
        }
    }

    function handleConditionalExpression(func, node) {
        var test;
        test = evaluator.booleanCondition(node.test);
        if (typeof test === 'boolean') {
            modified = true;
            if (test) {
                return common.moveLocation(node, {
                    type: Syntax.SequenceExpression,
                    expressions: [ node.test, node.consequent ]
                });
            } else {
                return common.moveLocation(node, {
                    type: Syntax.SequenceExpression,
                    expressions: [ node.test, node.alternate ]
                });
            }
        }
    }

    function handleForOrWhileStatement(func, node) {
      var test = node.test;
      if (test) {
        test = evaluator.booleanCondition(test);
        if (typeof test === 'boolean') {
          if (!test) {
            modified = true;
            return {
              type: Syntax.EmptyStatement
            };
          }
        }
      }
    }

    function handleDoWhileStatement(func, node) {
      var test = node.test;
      if (test) {
        test = evaluator.booleanCondition(test);
        if (typeof test === 'boolean') {
          if (!test) {
            modified = true;
            return node.body;
          }
        }
      }
    }

    function removeUnreachableBranch(tree, options) {
        var result, stack;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;
        stack = [];

        result = estraverse.replace(result, {
            enter: function enter(node) {
                var func;

                if (common.isFunctionNode(node)) {
                    stack.push(node);
                    return;
                }
                func = common.Array.last(stack);

                switch (node.type) {
                case Syntax.IfStatement:
                    return handleIfStatement(func, node);

                case Syntax.LogicalExpression:
                    return handleLogicalExpression(func, node);

                case Syntax.ConditionalExpression:
                    return handleConditionalExpression(func, node);

                case Syntax.WhileStatement:
                case Syntax.ForStatement:
                    return handleForOrWhileStatement(func, node);

                case Syntax.DoWhileStatement:
                    return handleDoWhileStatement(func, node);
                }
            },
            leave: function leave(node) {
                if (common.isFunctionNode(node)) {
                    stack.pop();
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    removeUnreachableBranch.passName = Name;
    module.exports = removeUnreachableBranch;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"../evaluator":4,"escope":115,"estraverse":129}],20:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, Map, common, estraverse, scope, modified;

    Name = 'remove-unused-label';

    estraverse = require('estraverse');
    common = require('../common');
    Map = require('../map');
    Syntax = common.Syntax;

    function Scope(upper) {
        this.set = new Map();
        this.unused = [];
        this.upper = upper;
    }

    Scope.prototype.register = function register(node) {
        var name;

        common.assert(node.type === Syntax.LabeledStatement);

        name = node.label.name;
        common.assert(!this.set.has(name), 'duplicate label is found');
        this.set.set(name, {
            used: false,
            stmt: node
        });
    };

    Scope.prototype.unregister = function unregister(node) {
        var name, ref;
        if (node.type === Syntax.LabeledStatement) {
            name = node.label.name;
            ref = this.set.get(name);
            this.set['delete'](name);
            if (!ref.used) {
                modified = true;
                return node.body;
            }
        }
        return node;
    };

    Scope.prototype.resolve = function resolve(node) {
        var name;
        if (node.label) {
            name = node.label.name;
            common.assert(this.set.has(name), 'unresolved label');
            this.set.get(name).used = true;
        }
    };

    Scope.prototype.close = function close() {
        return this.upper;
    };

    function removeUnusedLabel(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        scope = null;
        modified = false;

        result = estraverse.replace(result, {
            enter: function enter(node) {
                switch (node.type) {
                case Syntax.Program:
                case Syntax.FunctionDeclaration:
                case Syntax.FunctionExpression:
                    scope = new Scope(scope);
                    break;

                case Syntax.LabeledStatement:
                    scope.register(node);
                    break;

                case Syntax.BreakStatement:
                case Syntax.ContinueStatement:
                    scope.resolve(node);
                    break;
                }
            },
            leave: function leave(node) {
                var ret;
                ret = scope.unregister(node);
                if (node.type === Syntax.Program || node.type === Syntax.FunctionDeclaration || node.type === Syntax.FunctionExpression) {
                    scope = scope.close();
                }
                return ret;
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    removeUnusedLabel.passName = Name;
    module.exports = removeUnusedLabel;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"../map":5,"estraverse":129}],21:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, modified;

    Name = 'remove-wasted-blocks';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function flattenBlockStatement(body) {
        var i, iz, j, jz, result, stmt, inner, ok;
        result = [];
        for (i = 0, iz = body.length; i < iz; ++i) {
            stmt = body[i];
            if (stmt.type === Syntax.BlockStatement) {
                ok = true;
                for (j = 0, jz = stmt.body.length; j < jz; ++j) {
                    inner = stmt.body[j];
                    if (common.isScopedDeclaration(inner)) {
                        // we cannot remove this block
                        ok = false;
                    }
                }
                if (ok) {
                    modified = true;
                    result = result.concat(stmt.body);
                } else {
                    result.push(stmt);
                }
            } else {
                result.push(stmt);
            }
        }
        return result;
    }

    function removeWastedBlocks(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        result = estraverse.replace(result, {
            leave: function leave(node, parent) {
                var i, iz, stmt;

                if (
                    node.type === Syntax.BlockStatement &&
                    parent.type === Syntax.ArrowFunctionExpression
                ) {
                    if (!node.body.length){
                        return;
                    } else if (
                        node.body[0].type === Syntax.ReturnStatement &&
                        /Expression$/.test(node.body[0].argument.type) &&
                        node.body[0].argument && node.body[0].argument.type !== Syntax.ObjectExpression
                    ) {
                        node.body[0] = node.body[0].argument;
                    } else {
                        return;
                    }
                }
                // remove nested blocks
                if (node.type === Syntax.BlockStatement || node.type === Syntax.Program) {
                    for (i = 0, iz = node.body.length; i < iz; ++i) {
                        stmt = node.body[i];
                        if (stmt.type === Syntax.BlockStatement) {
                            node.body = flattenBlockStatement(node.body);
                            break;
                        }
                    }
                }

                // These type needs BlockStatement
                if (parent.type === Syntax.FunctionDeclaration || parent.type === Syntax.FunctionExpression || parent.type === Syntax.TryStatement || parent.type === Syntax.CatchClause) {
                    return;
                }

                while (node.type === Syntax.BlockStatement && node.body.length === 1 && !common.isScopedDeclaration(node.body[0])) {
                    modified = true;
                    node = node.body[0];
                }
                // empty body
                if (node.type === Syntax.BlockStatement && node.body.length === 0) {
                    modified = true;
                    return {
                        type: Syntax.EmptyStatement
                    };
                }
                return node;
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    removeWastedBlocks.passName = Name;
    module.exports = removeWastedBlocks;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],22:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, estraverse, common, modified;

    Name = 'reordering-function-declarations';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function reordering(array) {
        var i, iz, node, directives, declarations, others;
        directives = [];
        declarations = [];
        others = [];
        for (i = 0, iz = array.length; i < iz; ++i) {
            node = array[i];
            if (node.type === Syntax.FunctionDeclaration) {
                if ((declarations.length + directives.length) !== i) {
                    modified = true;
                }
                declarations.push(node);
            } else if (node.type === Syntax.DirectiveStatement) {
                directives.push(node);
            } else {
                others.push(node);
            }
        }
        return directives.concat(declarations, others);
    }

    function reorderingFunctionDeclarations(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        estraverse.traverse(result, {
            leave: function leave(node) {
                switch (node.type) {
                case Syntax.Program:
                    node.body = reordering(node.body);
                    break;

                case Syntax.FunctionDeclaration:
                case Syntax.FunctionExpression:
                    node.body.body = reordering(node.body.body);
                    break;
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    reorderingFunctionDeclarations.passName = Name;
    module.exports = reorderingFunctionDeclarations;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],23:[function(require,module,exports){
/*
  Copyright (C) 2014 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, estraverse, escope, common, modified;

    Name = 'top-level-variable-declaration-to-assignment';

    estraverse = require('estraverse');
    escope = require('escope');
    common = require('../common');
    Syntax = common.Syntax;

    function isStrictProgram(program) {
        var i, iz;
        if (!program.body.length) {
            return false;
        }
        for (i = 0, iz = program.body.length; i < iz; ++i) {
            if (program.body[i].type !== Syntax.DirectiveStatement) {
                return false;
            }
            if (program.body[i].value === 'use strict') {
                return true;
            }
        }
        return false;
    }

    function nothingChanged(result) {
        return {
            result: result,
            modified: false
        };
    }

    function topLevelVariableDeclarationToAssignment(tree, options) {
        var result, inNormalTopLevelCode;

        modified = false;

        if (options.get('topLevelContext', { pathName: Name }) !== 'global') {
            return nothingChanged(tree);
        }

        // If the top level code is strict code, this pass has no effect.
        if (options.get('inStrictCode', { pathName: Name })) {
            return nothingChanged(tree);
        }

        inNormalTopLevelCode = false;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);

        result = estraverse.replace(result, {
            enter: function enter(node, parent) {
                var i, iz, decl, assigns, declarations, expr;
                if (node.type === Syntax.Program) {
                    if (isStrictProgram(node)) {
                        return this.break();
                    }
                    inNormalTopLevelCode = true;
                    return;
                }

                if (!inNormalTopLevelCode) {
                    return this.break();
                }

                if (common.isFunctionNode(node) || node.type === Syntax.CatchClause || node.type === Syntax.WithStatement) {
                    return this.skip();
                }

                if (node.type !== Syntax.VariableDeclaration) {
                    return;
                }

                if (node.kind !== 'var') {
                    return;
                }

                // FIXME: We don't support `for (var i = 20;  ...) ...` case.
                if (parent && parent.type === Syntax.ForStatement || parent.type === Syntax.ForInStatement || parent.type === Syntax.ForOfStatement) {
                    return;
                }

                assigns = [];
                declarations = [];
                for (i = 0, iz = node.declarations.length; i < iz; ++i) {
                    decl = node.declarations[i];
                    if (decl.init) {
                        assigns.push(common.moveLocation(decl, {
                            type: Syntax.AssignmentExpression,
                            operator: '=',
                            left: decl.id,
                            right: decl.init
                        }));
                    } else {
                        declarations.push(decl);
                    }
                }

                if (assigns.length) {
                    modified = true;
                    if (assigns.length === 1) {
                        expr = assigns[0];
                    } else {
                        expr = {
                            type: Syntax.SequenceExpression,
                            expressions: assigns
                        };
                    }
                    if (declarations.length === 0) {
                        return {
                            type: Syntax.ExpressionStatement,
                            expression: expr
                        };
                    }
                    node.declarations = declarations;
                    return {
                        type: Syntax.BlockStatement,
                        body: [
                            node,
                            {
                                type: Syntax.ExpressionStatement,
                                expression: expr
                            }
                        ]
                    };
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    topLevelVariableDeclarationToAssignment.passName = Name;
    module.exports = topLevelVariableDeclarationToAssignment;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"escope":115,"estraverse":129}],24:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, modified;

    Name = 'transform-branch-to-expression';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function transformBranchToExpression(tree, options) {
        var result, preserveCompletionValue;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        preserveCompletionValue = options.get('preserveCompletionValue', { pathName: Name });
        modified = false;

        result = estraverse.replace(result, {
            leave: function leave(node) {
                var consequent, alternate, ancestors;
                if (node.type === Syntax.IfStatement) {
                    ancestors = this.parents();
                    if (preserveCompletionValue && common.mayBeCompletionValue(node, ancestors)) {
                        return;
                    }

                    if (node.alternate) {
                        if (node.consequent.type === Syntax.ExpressionStatement && node.alternate.type === Syntax.ExpressionStatement) {
                            // ok, we can reconstruct this to ConditionalExpression
                            modified = true;
                            return common.moveLocation(node, {
                                type: Syntax.ExpressionStatement,
                                expression: common.moveLocation(node, {
                                    type: Syntax.ConditionalExpression,
                                    test: node.test,
                                    consequent: node.consequent.expression,
                                    alternate: node.alternate.expression
                                })
                            });
                        }
                        if (node.consequent.type === Syntax.ReturnStatement && node.alternate.type === Syntax.ReturnStatement) {
                            // pattern:
                            //   if (cond) return a;
                            //   else return b;
                            modified = true;

                            if (!node.consequent.argument && !node.alternate.argument) {
                                // if (cond) return;
                                // else return;
                                return common.moveLocation(node, {
                                    type: Syntax.ReturnStatement,
                                    argument: common.moveLocation(node, {
                                        type: Syntax.SequenceExpression,
                                        expressions: [node.test, common.SpecialNode.generateUndefined() ]
                                    })
                                });
                            }
                            consequent = node.consequent.argument || common.SpecialNode.generateUndefined();
                            alternate = node.alternate.argument || common.SpecialNode.generateUndefined();

                            return common.moveLocation(node, {
                                type: Syntax.ReturnStatement,
                                argument: common.moveLocation(node, {
                                    type: Syntax.ConditionalExpression,
                                    test: node.test,
                                    consequent: consequent,
                                    alternate: alternate
                                })
                            });
                        }
                        if (node.consequent.type === Syntax.ThrowStatement && node.alternate.type === Syntax.ThrowStatement) {
                            // pattern:
                            //   if (cond) throw a;
                            //   else throw b;
                            modified = true;
                            return common.moveLocation(node, {
                                type: Syntax.ThrowStatement,
                                argument: common.moveLocation(node, {
                                    type: Syntax.ConditionalExpression,
                                    test: node.test,
                                    consequent: node.consequent.argument,
                                    alternate: node.alternate.argument
                                })
                            });
                        }
                    } else {
                        if (node.consequent.type === Syntax.ExpressionStatement) {
                            // ok, we can reconstruct this to LogicalExpression
                            modified = true;
                            return common.moveLocation(node, {
                                type: Syntax.ExpressionStatement,
                                expression: common.moveLocation(node, {
                                    type: Syntax.LogicalExpression,
                                    operator: '&&',
                                    left: node.test,
                                    right: node.consequent.expression
                                })
                            });
                        } else if (node.consequent.type === Syntax.EmptyStatement) {
                            // ok, we can reconstruct this to expression statement
                            modified = true;
                            return common.moveLocation(node, {
                                type: Syntax.ExpressionStatement,
                                expression: node.test
                            });
                        }
                    }
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    transformBranchToExpression.passName = Name;
    module.exports = transformBranchToExpression;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],25:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, estraverse, common, modified;

    Name = 'transform-dynamic-to-static-property-access';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function transformDynamicToStaticPropertyAccess(tree, options) {
        var result;

        modified = false;
        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);

        estraverse.traverse(result, {
            enter: function enter(node) {
                var property;
                if (node.type === Syntax.MemberExpression && node.computed) {
                    property = node.property;
                    if (property.type === Syntax.Literal && typeof property.value === 'string') {
                        if (common.isIdentifier(property.value)) {
                            modified = true;
                            node.computed = false;
                            node.property = common.moveLocation(property, {
                                type: Syntax.Identifier,
                                name: property.value
                            });
                        } else if (property.value === Number(property.value).toString()) {
                            modified = true;
                            node.computed = true;
                            node.property = common.moveLocation(node.property, common.SpecialNode.generateFromValue(Number(node.property.value)));
                        }
                    }
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    transformDynamicToStaticPropertyAccess.passName = Name;
    module.exports = transformDynamicToStaticPropertyAccess;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],26:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, estraverse, common, modified;

    Name = 'transform-dynamic-to-static-property-definition';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function transformDynamicToStaticPropertyDefinition(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        estraverse.traverse(result, {
            enter: function enter(node) {
                var generated;
                if (node.type === Syntax.Property) {
                    if (node.key.type === Syntax.Literal && typeof node.key.value === 'string') {
                        if (common.isIdentifier(node.key.value)) {
                            modified = true;
                            node.key = common.moveLocation(node.key, {
                                type: Syntax.Identifier,
                                name: node.key.value
                            });
                        } else if (node.key.value === Number(node.key.value).toString()) {
                            // we should not generate
                            // var obj = {
                            //   -20: 20
                            // };
                            generated = common.SpecialNode.generateFromValue(Number(node.key.value));
                            if (generated.type === Syntax.Literal) {
                                modified = true;
                                node.key = common.moveLocation(node.key, generated);
                            }
                        }
                    }
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    transformDynamicToStaticPropertyDefinition.passName = Name;
    module.exports = transformDynamicToStaticPropertyDefinition;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],27:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, modified;

    Name = 'transform-immediate-function-call';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function isEmptyFunctionCall(call) {
        var callee, i, iz, stmt;
        if (call.type !== Syntax.CallExpression) {
            return false;
        }

        callee = call.callee;

        if (callee.type !== Syntax.FunctionExpression) {
            return false;
        }

        if (callee.body.type !== Syntax.BlockStatement) {
            return false;
        }

        // see side effect
        if (callee.body.body.length === 0) {
            return true;
        }

        for (i = 0, iz = callee.body.body.length; i < iz; ++i) {
            stmt = callee.body.body[i];
            if (stmt.type !== Syntax.FunctionDeclaration) {
                return false;
            }
        }

        return true;
    }

    function callToSequence(call) {
        var expressions;
        expressions = common.Array.from(call['arguments']);

        if (expressions.length === 0) {
            return common.SpecialNode.generateUndefined(call);
        }

        expressions.push(common.SpecialNode.generateUndefined());
        return common.moveLocation(call, {
            type: Syntax.SequenceExpression,
            expressions: expressions
        });
    }

    function transformImmediateFunctionCall(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        result = estraverse.replace(result, {
            leave: function leave(node) {
                if (isEmptyFunctionCall(node)) {
                    modified = true;
                    return callToSequence(node);
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    transformImmediateFunctionCall.passName = Name;
    module.exports = transformImmediateFunctionCall;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],28:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, estraverse, common, modified;

    Name = 'transform-logical-association';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function transformLogicalAssociation(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        estraverse.traverse(result, {
            enter: function enter(node) {
                if (node.type === Syntax.LogicalExpression) {
                    // transform
                    // a && (b && c) => (a && b) && c
                    // a || (b || c) => (a || b) || c
                    if (node.right.type === Syntax.LogicalExpression && node.operator === node.right.operator) {
                        modified = true;
                        node.left = {
                            type: Syntax.LogicalExpression,
                            operator: node.operator,
                            left: node.left,
                            right: node.right.left
                        };
                        node.right = node.right.right;
                    }
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    transformLogicalAssociation.passName = Name;
    module.exports = transformLogicalAssociation;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],29:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, escope, modified;

    Name = 'transform-to-compound-assignment';

    estraverse = require('estraverse');
    escope = require('escope');
    common = require('../common');
    Syntax = common.Syntax;

    function equals(lhs, rhs) {
        if (lhs.type !== rhs.type) {
            return false;
        }
        if (lhs.type === Syntax.Identifier) {
            return lhs.name === rhs.name;
        }
        return false;
    }

    function compound(operator) {
        switch (operator) {
        case '*':
        case '/':
        case '%':
        case '+':
        case '-':
        case '<<':
        case '>>':
        case '>>>':
        case '&':
        case '^':
        case '|':
            return operator + '=';
        }
        return null;
    }

    function observableCompound(operator) {
        switch (operator) {
        case '*=':
        case '/=':
        case '%=':
        case '+=':
        case '-=':
        case '<<=':
        case '>>=':
        case '>>>=':
        case '&=':
        case '^=':
        case '|=':
            return operator;
        }
        return null;
    }

    function transformToCompoundAssignment(tree, options) {
        var result, scope, manager;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;
        scope = null;

        manager = escope.analyze(result, { directive: true });
        manager.attach();

        estraverse.traverse(result, {
            enter: function enter(node) {
                var left, right, operator, ref;
                scope = manager.acquire(node) || scope;
                if (node.type === Syntax.AssignmentExpression && node.operator === '=') {
                    left = node.left;
                    right = node.right;
                    if (right.type === Syntax.BinaryExpression && equals(right.left, left)) {
                        operator = compound(right.operator);
                        if (operator) {
                            modified = true;
                            node.operator = operator;
                            node.right = right.right;
                        }
                    } else if (right.type === Syntax.AssignmentExpression && equals(right.left, left)) {
                        if (observableCompound(right.operator)) {
                            ref = scope.resolve(node.left);
                            if (ref.isStatic()) {
                                modified = true;
                                node.operator = right.operator;
                                node.right = right.right;
                            }
                        }
                    }
                }
            },
            leave: function leave(node) {
                scope = manager.release(node) || scope;
            }
        });

        manager.detach();

        return {
            result: result,
            modified: modified
        };
    }

    transformToCompoundAssignment.passName = Name;
    module.exports = transformToCompoundAssignment;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"escope":115,"estraverse":129}],30:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, modified;

    Name = 'transform-to-sequence-expression';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function transform(node) {
        var i, iz, expressions, stmt, prev, body;

        function constructSeq(expressions, stmt) {
            var seq;

            if (expressions.length !== 1) {
                modified = true;
                seq = {
                    type: Syntax.SequenceExpression,
                    expressions: expressions
                };

                if (stmt.type === Syntax.ExpressionStatement) {
                    stmt.expression = seq;
                } else {
                    stmt.argument = seq;
                }
            }

            return stmt;
        }

        body = [];
        expressions = [];

        for (i = 0, iz = node.body.length; i < iz; ++i) {
            prev = stmt;
            stmt = node.body[i];

            if (stmt.type === Syntax.ExpressionStatement) {
                expressions.push(stmt.expression);
            } else if ((stmt.type === Syntax.ReturnStatement && stmt.argument != null) || stmt.type === Syntax.ThrowStatement) {
                // Not distinguishing between null or undefined in argument
                expressions.push(stmt.argument);
                body.push(constructSeq(expressions, stmt));
                expressions = [];
            } else if (stmt.type === Syntax.ForStatement && (!stmt.init || stmt.init.type !== Syntax.VariableDeclaration)) {
                // insert expressions to for (<init>;;);
                if (expressions.length) {
                    modified = true;
                    if (stmt.init) {
                        expressions.push(stmt.init);
                    }
                    if (expressions.length === 1) {
                        stmt.init = expressions[0];
                    } else {
                        stmt.init = {
                            type: Syntax.SequenceExpression,
                            expressions: expressions
                        };
                    }
                    expressions = [];
                }
                body.push(stmt);
            } else if (stmt.type === Syntax.IfStatement) {
                if (expressions.length) {
                    modified = true;
                    expressions.push(stmt.test);
                    stmt.test = {
                        type: Syntax.SequenceExpression,
                        expressions: expressions
                    };
                    expressions = [];
                }
                body.push(stmt);
            } else {
                if (expressions.length) {
                    body.push(constructSeq(expressions, prev));
                    expressions = [];
                }
                body.push(stmt);
            }
        }

        if (expressions.length) {
            body.push(constructSeq(expressions, stmt));
        }

        node.body = body;
    }

    function transformToSequenceExpression(tree, options) {
        var result;

        modified = false;
        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);

        estraverse.traverse(result, {
            enter: function enter(node) {
                switch (node.type) {
                case Syntax.BlockStatement:
                case Syntax.Program:
                    transform(node);
                    break;
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    transformToSequenceExpression.passName = Name;
    module.exports = transformToSequenceExpression;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],31:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, escope, estraverse, modified;

    Name = 'transform-typeof-undefined';

    estraverse = require('estraverse');
    escope = require('escope');
    common = require('../common');
    Syntax = common.Syntax;

    function isUndefinedStringLiteral(node) {
        return node.type === Syntax.Literal && node.value === 'undefined';
    }

    function transformTypeofUndefined(tree, options) {
        var result, manager, scope;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;
        scope = null;

        manager = escope.analyze(result, { directive: true });
        manager.attach();

        estraverse.traverse(result, {
            enter: function enter(node) {
                var target, undef, argument, ref;
                scope = manager.acquire(node) || scope;
                if (node.type === Syntax.BinaryExpression &&
                    (node.operator === '===' || node.operator === '!==' || node.operator === '==' || node.operator === '!=')) {
                    if (isUndefinedStringLiteral(node.left)) {
                        undef = 'left';
                        target = 'right';
                    } else if (isUndefinedStringLiteral(node.right)) {
                        undef = 'right';
                        target = 'left';
                    } else {
                        return;
                    }

                    if (node[target].type === Syntax.UnaryExpression && node[target].operator === 'typeof') {
                        argument = node[target].argument;
                        if (argument.type === Syntax.Identifier) {
                            ref = scope.resolve(argument);
                            if (!ref || !ref.isStatic() || !ref.resolved) {
                                // may raise ReferenceError
                                return;
                            }
                        }
                        modified = true;
                        node[undef] = common.SpecialNode.generateUndefined();
                        node[target] = argument;
                        node.operator = node.operator.charAt(0) === '!' ? '!==' : '===';
                    }
                }
            },
            leave: function leave(node) {
                scope = manager.release(node) || scope;
            }
        });

        manager.detach();

        return {
            result: result,
            modified: modified
        };
    }

    transformTypeofUndefined.passName = Name;
    module.exports = transformTypeofUndefined;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"escope":115,"estraverse":129}],32:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, evaluator, estraverse, modified;

    Name = 'tree-based-constant-folding';

    estraverse = require('estraverse');
    common = require('../common');
    evaluator = require('../evaluator');
    Syntax = common.Syntax;


    function isModifiedConstant(node) {
        // consider
        //   (undefined) `void 0`
        //   (negative value) `-1`,
        //   (NaN) `0/0`
        if (common.SpecialNode.isUndefined(node)) {
            return false;
        }
        if (common.SpecialNode.isNegative(node)) {
            return false;
        }
        if (common.SpecialNode.isNaN(node)) {
            return false;
        }
        return evaluator.constant.isConstant(node, false);
    }

    function isFoldableConditional(node) {
        if (node.type !== Syntax.ConditionalExpression) {
            return false;
        }
        return evaluator.constant.isConstant(node.consequent) || evaluator.constant.isConstant(node.alternate);
    }

    function foldConditional(node) {
        var binary, unary, operator, left, right;
        switch (node.type) {
        case Syntax.BinaryExpression:
            if (node.operator === 'in' || node.operator === 'instanceof') {
                // cannot fold this
                return node;
            }

            if (evaluator.constant.isConstant(node.left) && isFoldableConditional(node.right)) {
                modified = true;
                binary = node;
                operator = binary.operator;
                left = evaluator.constant.evaluate(binary.left);

                node = node.right;
                if (evaluator.constant.isConstant(node.consequent)) {
                    node.consequent = common.SpecialNode.generateFromValue(evaluator.constant.doBinary(operator, left, evaluator.constant.evaluate(node.consequent)));
                } else {
                    // cannot fold left
                    binary.right = node.consequent;
                    node.consequent = binary;
                }
                if (evaluator.constant.isConstant(node.alternate)) {
                    node.alternate = common.SpecialNode.generateFromValue(evaluator.constant.doBinary(operator, left, evaluator.constant.evaluate(node.alternate)));
                } else {
                    // cannot fold right
                    binary.right = node.alternate;
                    node.alternate = binary;
                }
            } else if (evaluator.constant.isConstant(node.right) && isFoldableConditional(node.left)) {
                modified = true;
                binary = node;
                operator = binary.operator;
                right = evaluator.constant.evaluate(binary.right);

                node = node.left;
                if (evaluator.constant.isConstant(node.consequent)) {
                    node.consequent = common.SpecialNode.generateFromValue(evaluator.constant.doBinary(operator, evaluator.constant.evaluate(node.consequent), right));
                } else {
                    // cannot fold left
                    binary.left = node.consequent;
                    node.consequent = binary;
                }
                if (evaluator.constant.isConstant(node.alternate)) {
                    node.alternate = common.SpecialNode.generateFromValue(evaluator.constant.doBinary(operator, evaluator.constant.evaluate(node.alternate), right));
                } else {
                    // cannot fold right
                    binary.left = node.alternate;
                    node.alternate = binary;
                }
            }
            break;

        case Syntax.LogicalExpression:
            break;

        case Syntax.UnaryExpression:
            if (isFoldableConditional(node.argument)) {
                modified = true;
                unary = node;
                operator = unary.operator;
                node = unary.argument;
                if (evaluator.constant.isConstant(node.consequent)) {
                    node.consequent = common.SpecialNode.generateFromValue(evaluator.constant.doUnary(operator, evaluator.constant.evaluate(node.consequent)));
                } else {
                    // cannot fold left
                    unary.argument = node.consequent;
                    node.consequent = unary;
                }
                if (evaluator.constant.isConstant(node.alternate)) {
                    node.alternate = common.SpecialNode.generateFromValue(evaluator.constant.doUnary(operator, evaluator.constant.evaluate(node.alternate)));
                } else {
                    // cannot fold right
                    unary.argument = node.alternate;
                    node.alternate = unary;
                }
            }
            break;
        }

        return node;
    }

    function treeBasedConstantFolding(tree, options) {
        var result;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        result = estraverse.replace(result, {
            leave: function leave(node) {
                var con, alt;
                switch (node.type) {
                case Syntax.BinaryExpression:
                case Syntax.LogicalExpression:
                case Syntax.UnaryExpression:
                    if (isModifiedConstant(node)) {
                        modified = true;
                        return common.moveLocation(node, common.SpecialNode.generateFromValue(evaluator.constant.evaluate(node)));
                    }
                    return foldConditional(node);

                case Syntax.ConditionalExpression:
                    if (evaluator.constant.isConstant(node.consequent) && evaluator.constant.isConstant(node.alternate)) {
                        con = evaluator.constant.evaluate(node.consequent);
                        alt = evaluator.constant.evaluate(node.alternate);
                        if (common.sameValue(con, alt)) {
                            modified = true;
                            return common.moveLocation(node, {
                                type: Syntax.SequenceExpression,
                                expressions: [
                                    node.test,
                                    common.SpecialNode.generateFromValue(con)
                                ]
                            });
                        }
                    }
                    break;
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    treeBasedConstantFolding.passName = Name;
    module.exports = treeBasedConstantFolding;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"../evaluator":4,"estraverse":129}],33:[function(require,module,exports){
/*
  Copyright (C) 2014 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, modified;

    Name = 'typeof-prefix-comparison';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function isTypeof(node) {
        return node.type === 'UnaryExpression' && node.operator === 'typeof';
    }

    function extractLiteral(node) {
        // http://people.mozilla.org/~jorendorff/es6-draft.html#sec-typeof-operator
        var index,
            literalMap = {
                'undefined': 0,
                'object': 0,
                'boolean': 0,
                'number': 0,
                'string': 1,
                'function': 0,
                'symbol': 1      // ES6 Symbol
            };
        if (node.type !== Syntax.Literal) {
            return false;
        }
        if (typeof node.value !== 'string') {
            return false;
        }
        if (!common.Object.has(literalMap, node.value)) {
            return false;
        }
        index = literalMap[node.value];
        return {
            value: node.value.charAt(index),
            index: index,
        };
    }

    function optimize(parentNode, leftIsTypeof, typeofNode, literalNode, info) {
        var wrapped, literal;

        wrapped = {
            type: 'MemberExpression',
            computed: true,
            object: typeofNode,
            property: {
                type: 'Literal',
                value: info.index
            }
        };

        literal = common.moveLocation(literalNode, {
            type: 'Literal',
            value: info.value
        });

        if (leftIsTypeof) {
            parentNode.left = wrapped;
            parentNode.right = literal;
        } else {
            parentNode.right = wrapped;
            parentNode.left = literal;
        }

        if (parentNode.operator === '===' || parentNode.operator === '==') {
            parentNode.operator = '==';
        } else {
            parentNode.operator = '!=';
        }

        modified = true;

        return parentNode;
    }

    function main(tree, options) {
        var result, legacy;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        legacy = options.get('legacy', { pathName: Name });

        if (legacy) {
            return {
                result: result,
                modified: false
            };
        }

        modified = false;

        result = estraverse.replace(result, {
            leave: function leave(node) {
                var info;
                if (node.type !== Syntax.BinaryExpression) {
                    return;
                }

                if (node.operator !== '===' && node.operator !== '==' &&
                    node.operator !== '!==' && node.operator !== '!=') {
                    return;
                }

                if (isTypeof(node.left)) {
                    info = extractLiteral(node.right);
                    if (info) {
                        return optimize(node, true, node.left, node.right, info);
                    }
                } else if (isTypeof(node.right)) {
                    info = extractLiteral(node.left);
                    if (info) {
                        return optimize(node, false, node.right, node.left, info);
                    }
                }
                return;
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    main.passName = Name;
    module.exports = main;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],34:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    var Name, Syntax, common, estraverse, modified;

    Name = 'omit-parens-in-void-context-iife';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function isIIFE(node) {
        var callee;

        if (node.type !== Syntax.CallExpression) {
            return false;
        }

        callee = node.callee;
        return callee.type === Syntax.FunctionExpression;
    }

    function main(tree, options) {
        var result, stackCount, preserveCompletionValue;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        preserveCompletionValue = options.get('preserveCompletionValue', { pathName: Name });
        modified = false;

        result = estraverse.replace(result, {
            enter: function enter(node, parent) {
                var ancestors, target;

                if (!isIIFE(node)) {
                    return;
                }

                target = parent;
                if (target.type === Syntax.ExpressionStatement) {
                    ancestors = this.parents();
                    ancestors.pop();  // remove parent: ExpressionStatement
                    if (preserveCompletionValue && common.mayBeCompletionValue(target, ancestors)) {
                        return;
                    }
                } else if (target.type === Syntax.SequenceExpression && target.expressions.length >= 2 && target.expressions[0] === node) {
                    ancestors = this.parents();
                    ancestors.pop();  // remove parent: SequenceExpression
                    target = ancestors.pop();  // remove parent: ExpressionStatement
                    if (target.type !== Syntax.ExpressionStatement) {
                        return;
                    }
                } else {
                    return;
                }

                // transform it
                modified = true;
                return {
                    type: Syntax.UnaryExpression,
                    operator: '!',
                    argument: node
                };
            },
            leave: function leave(node) {
                if (node.type === Syntax.FunctionExpression || node.type === Syntax.FunctionDeclaration) {
                    --stackCount;
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    main.passName = Name;
    module.exports = main;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],35:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, modified;

    Name = 'rewrite-boolean';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function isBooleanLiteral(node) {
        return node.type === Syntax.Literal && typeof node.value === 'boolean';
    }

    function rewrite(node) {
        if (isBooleanLiteral(node)) {
            modified = true;
            return common.moveLocation(node, {
                type: Syntax.UnaryExpression,
                operator: '!',
                argument: common.moveLocation(node, {
                    type: Syntax.Literal,
                    value: +!node.value
                })
            });
        }

        if (node.type === Syntax.BinaryExpression && node.operator === '==' || node.operator === '!=') {
            if (isBooleanLiteral(node.left)) {
                modified = true;
                node.left = common.moveLocation(node.left, {
                    type: Syntax.Literal,
                    value: +node.left.value
                });
                return node;
            }
            if (isBooleanLiteral(node.right)) {
                modified = true;
                node.right = common.moveLocation(node.right, {
                    type: Syntax.Literal,
                    value: +node.right.value
                });
                return node;
            }
        }

        return node;
    }

    function rewriteBoolean(tree, options) {
        var result;

        modified = false;
        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);

        result = estraverse.replace(result, {
            enter: rewrite
        });

        return {
            result: result,
            modified: modified
        };
    }

    rewriteBoolean.passName = Name;
    module.exports = rewriteBoolean;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],36:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse, modified;

    Name = 'rewrite-conditional-expression';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function rewrite(node) {
        var test, consequent, alternate;
        test = node.test;
        consequent = node.consequent;
        alternate = node.alternate;
        if (test.type === Syntax.UnaryExpression && test.operator === '!') {
            modified = true;
            node.consequent = alternate;
            node.alternate = consequent;
            node.test = test.argument;
        }
    }

    function rewriteConditionalExpression(tree, options) {
        var result;

        modified = false;
        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);

        estraverse.traverse(result, {
            enter: function enter(node) {
                if (node.type === Syntax.ConditionalExpression) {
                    rewrite(node);
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    rewriteConditionalExpression.passName = Name;
    module.exports = rewriteConditionalExpression;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],37:[function(require,module,exports){
/*
  Copyright (C) 2012 Michael Ficarra <esmangle.copyright@michael.ficarra.me>
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse;

    Name = 'transform-infinity';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function transformInfinity(tree, options) {
        var result, modified;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        result = estraverse.replace(result, {
            enter: function enter(node) {
                if (node.type === Syntax.Literal && typeof node.value === 'number') {
                    if (node.value === Infinity) {
                        modified = true;
                        return common.moveLocation(node, {
                            type: Syntax.BinaryExpression,
                            operator: '/',
                            left: {type: Syntax.Literal, value: 1},
                            right: {type: Syntax.Literal, value: 0}
                        });
                    }
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    transformInfinity.passName = Name;
    module.exports = transformInfinity;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],38:[function(require,module,exports){
/*
  Copyright (C) 2012 Michael Ficarra <esmangle.copyright@michael.ficarra.me>
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global module:true, require:true*/
(function () {
    'use strict';

    var Name, Syntax, common, estraverse;

    Name = 'transform-static-to-dynamic-property-access';

    estraverse = require('estraverse');
    common = require('../common');
    Syntax = common.Syntax;

    function transformStaticToDynamicPropertyAccess(tree, options) {
        var result, modified;

        result = options.get('destructive', { pathName: Name }) ? tree : common.deepCopy(tree);
        modified = false;

        estraverse.traverse(result, {
            enter: function enter(node) {
                var property;

                if (node.type !== Syntax.MemberExpression || node.computed || node.property.type !== Syntax.Identifier) {
                    return;
                }

                property = node.property;
                switch (property.name) {
                case 'undefined':
                    modified = true;
                    node.computed = true;
                    node.property = common.moveLocation(property, {
                        type: Syntax.UnaryExpression,
                        operator: 'void',
                        argument: {type: Syntax.Literal, value: 0}
                    });
                    break;
                case 'true':
                case 'false':
                    modified = true;
                    node.computed = true;
                    node.property = common.moveLocation(property, {
                        type: Syntax.Literal,
                        value: property.name === 'true'
                    });
                    break;
                case 'Infinity':
                    modified = true;
                    node.computed = true;
                    node.property = common.moveLocation(property, {
                        type: Syntax.BinaryExpression,
                        operator: '/',
                        left: {type: Syntax.Literal, value: 1},
                        right: {type: Syntax.Literal, value: 0}
                    });
                    break;
                }
            }
        });

        return {
            result: result,
            modified: modified
        };
    }

    transformStaticToDynamicPropertyAccess.passName = Name;
    module.exports = transformStaticToDynamicPropertyAccess;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../common":2,"estraverse":129}],39:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true */
/*global require:true*/
(function () {
    'use strict';

    var common;

    common = require('./common');

    exports.get = function get(root, query) {
        var i, iz, name, node;
        node = root;
        for (i = 0, iz = query.length; i < iz; ++i) {
            name = query[i];
            node = node[name];
        }
        return node;
    };

    exports.set = function set(root, query, value) {
        var i, iz, name, node;
        common.assert(query.length > 0);
        node = root;
        for (i = 0, iz = query.length - 1; i < iz; ++i) {
            name = query[i];
            node = node[name];
        }
        name = query[i];
        node[name] = value;
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./common":2}],40:[function(require,module,exports){
(function (global){
'use strict';

var objectAssign = require('object-assign');

// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js
// original notice:

/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */
function compare(a, b) {
  if (a === b) {
    return 0;
  }

  var x = a.length;
  var y = b.length;

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i];
      y = b[i];
      break;
    }
  }

  if (x < y) {
    return -1;
  }
  if (y < x) {
    return 1;
  }
  return 0;
}
function isBuffer(b) {
  if (global.Buffer && typeof global.Buffer.isBuffer === 'function') {
    return global.Buffer.isBuffer(b);
  }
  return !!(b != null && b._isBuffer);
}

// based on node assert, original notice:
// NB: The URL to the CommonJS spec is kept just for tradition.
//     node-assert has evolved a lot since then, both in API and behavior.

// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

var util = require('util/');
var hasOwn = Object.prototype.hasOwnProperty;
var pSlice = Array.prototype.slice;
var functionsHaveNames = (function () {
  return function foo() {}.name === 'foo';
}());
function pToString (obj) {
  return Object.prototype.toString.call(obj);
}
function isView(arrbuf) {
  if (isBuffer(arrbuf)) {
    return false;
  }
  if (typeof global.ArrayBuffer !== 'function') {
    return false;
  }
  if (typeof ArrayBuffer.isView === 'function') {
    return ArrayBuffer.isView(arrbuf);
  }
  if (!arrbuf) {
    return false;
  }
  if (arrbuf instanceof DataView) {
    return true;
  }
  if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) {
    return true;
  }
  return false;
}
// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

var regex = /\s*function\s+([^\(\s]*)\s*/;
// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js
function getName(func) {
  if (!util.isFunction(func)) {
    return;
  }
  if (functionsHaveNames) {
    return func.name;
  }
  var str = func.toString();
  var match = str.match(regex);
  return match && match[1];
}
assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  if (options.message) {
    this.message = options.message;
    this.generatedMessage = false;
  } else {
    this.message = getMessage(this);
    this.generatedMessage = true;
  }
  var stackStartFunction = options.stackStartFunction || fail;
  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, stackStartFunction);
  } else {
    // non v8 browsers so we can have a stacktrace
    var err = new Error();
    if (err.stack) {
      var out = err.stack;

      // try to strip useless frames
      var fn_name = getName(stackStartFunction);
      var idx = out.indexOf('\n' + fn_name);
      if (idx >= 0) {
        // once we have located the function frame
        // we need to strip out everything before it (and its line)
        var next_line = out.indexOf('\n', idx + 1);
        out = out.substring(next_line + 1);
      }

      this.stack = out;
    }
  }
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function truncate(s, n) {
  if (typeof s === 'string') {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}
function inspect(something) {
  if (functionsHaveNames || !util.isFunction(something)) {
    return util.inspect(something);
  }
  var rawname = getName(something);
  var name = rawname ? ': ' + rawname : '';
  return '[Function' +  name + ']';
}
function getMessage(self) {
  return truncate(inspect(self.actual), 128) + ' ' +
         self.operator + ' ' +
         truncate(inspect(self.expected), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected, false)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected, true)) {
    fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
  }
};

function _deepEqual(actual, expected, strict, memos) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;
  } else if (isBuffer(actual) && isBuffer(expected)) {
    return compare(actual, expected) === 0;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if ((actual === null || typeof actual !== 'object') &&
             (expected === null || typeof expected !== 'object')) {
    return strict ? actual === expected : actual == expected;

  // If both values are instances of typed arrays, wrap their underlying
  // ArrayBuffers in a Buffer each to increase performance
  // This optimization requires the arrays to have the same type as checked by
  // Object.prototype.toString (aka pToString). Never perform binary
  // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their
  // bit patterns are not identical.
  } else if (isView(actual) && isView(expected) &&
             pToString(actual) === pToString(expected) &&
             !(actual instanceof Float32Array ||
               actual instanceof Float64Array)) {
    return compare(new Uint8Array(actual.buffer),
                   new Uint8Array(expected.buffer)) === 0;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else if (isBuffer(actual) !== isBuffer(expected)) {
    return false;
  } else {
    memos = memos || {actual: [], expected: []};

    var actualIndex = memos.actual.indexOf(actual);
    if (actualIndex !== -1) {
      if (actualIndex === memos.expected.indexOf(expected)) {
        return true;
      }
    }

    memos.actual.push(actual);
    memos.expected.push(expected);

    return objEquiv(actual, expected, strict, memos);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b, strict, actualVisitedObjects) {
  if (a === null || a === undefined || b === null || b === undefined)
    return false;
  // if one is a primitive, the other must be same
  if (util.isPrimitive(a) || util.isPrimitive(b))
    return a === b;
  if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
    return false;
  var aIsArgs = isArguments(a);
  var bIsArgs = isArguments(b);
  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
    return false;
  if (aIsArgs) {
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b, strict);
  }
  var ka = objectKeys(a);
  var kb = objectKeys(b);
  var key, i;
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length !== kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] !== kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects))
      return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected, false)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

assert.notDeepStrictEqual = notDeepStrictEqual;
function notDeepStrictEqual(actual, expected, message) {
  if (_deepEqual(actual, expected, true)) {
    fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
  }
}


// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  }

  try {
    if (actual instanceof expected) {
      return true;
    }
  } catch (e) {
    // Ignore.  The instanceof check doesn't work for arrow functions.
  }

  if (Error.isPrototypeOf(expected)) {
    return false;
  }

  return expected.call({}, actual) === true;
}

function _tryBlock(block) {
  var error;
  try {
    block();
  } catch (e) {
    error = e;
  }
  return error;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (typeof block !== 'function') {
    throw new TypeError('"block" argument must be a function');
  }

  if (typeof expected === 'string') {
    message = expected;
    expected = null;
  }

  actual = _tryBlock(block);

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  var userProvidedMessage = typeof message === 'string';
  var isUnwantedException = !shouldThrow && util.isError(actual);
  var isUnexpectedException = !shouldThrow && actual && !expected;

  if ((isUnwantedException &&
      userProvidedMessage &&
      expectedException(actual, expected)) ||
      isUnexpectedException) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws(true, block, error, message);
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
  _throws(false, block, error, message);
};

assert.ifError = function(err) { if (err) throw err; };

// Expose a strict only variant of assert
function strict(value, message) {
  if (!value) fail(value, true, message, '==', strict);
}
assert.strict = objectAssign(strict, assert, {
  equal: assert.strictEqual,
  deepEqual: assert.deepStrictEqual,
  notEqual: assert.notStrictEqual,
  notDeepEqual: assert.notDeepStrictEqual
});
assert.strict.strict = assert.strict;

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    if (hasOwn.call(obj, key)) keys.push(key);
  }
  return keys;
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"object-assign":141,"util/":43}],41:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],42:[function(require,module,exports){
module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}
},{}],43:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = require('inherits');

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":42,"_process":142,"inherits":41}],44:[function(require,module,exports){
var upperCase = require('upper-case')
var sentenceCase = require('sentence-case')

/**
 * Camel case a string.
 *
 * @param  {String} string
 * @param  {String} [locale]
 * @return {String}
 */
module.exports = function (string, locale, mergeNumbers) {
  var result = sentenceCase(string, locale)

  // Replace periods between numeric entities with an underscore.
  if (!mergeNumbers) {
    result = result.replace(/(\d) (?=\d)/g, '$1_')
  }

  // Replace spaces between words with an upper cased character.
  return result.replace(/ (.)/g, function (m, $1) {
    return upperCase($1, locale)
  })
}

},{"sentence-case":143,"upper-case":158}],45:[function(require,module,exports){
"use strict";

var isValue             = require("type/value/is")
  , ensureValue         = require("type/value/ensure")
  , ensurePlainFunction = require("type/plain-function/ensure")
  , copy                = require("es5-ext/object/copy")
  , normalizeOptions    = require("es5-ext/object/normalize-options")
  , map                 = require("es5-ext/object/map");

var bind = Function.prototype.bind
  , defineProperty = Object.defineProperty
  , hasOwnProperty = Object.prototype.hasOwnProperty
  , define;

define = function (name, desc, options) {
	var value = ensureValue(desc) && ensurePlainFunction(desc.value), dgs;
	dgs = copy(desc);
	delete dgs.writable;
	delete dgs.value;
	dgs.get = function () {
		if (!options.overwriteDefinition && hasOwnProperty.call(this, name)) return value;
		desc.value = bind.call(value, options.resolveContext ? options.resolveContext(this) : this);
		defineProperty(this, name, desc);
		return this[name];
	};
	return dgs;
};

module.exports = function (props/*, options*/) {
	var options = normalizeOptions(arguments[1]);
	if (isValue(options.resolveContext)) ensurePlainFunction(options.resolveContext);
	return map(props, function (desc, name) { return define(name, desc, options); });
};

},{"es5-ext/object/copy":67,"es5-ext/object/map":75,"es5-ext/object/normalize-options":76,"type/plain-function/ensure":152,"type/value/ensure":156,"type/value/is":157}],46:[function(require,module,exports){
"use strict";

var isValue         = require("type/value/is")
  , isPlainFunction = require("type/plain-function/is")
  , assign          = require("es5-ext/object/assign")
  , normalizeOpts   = require("es5-ext/object/normalize-options")
  , contains        = require("es5-ext/string/#/contains");

var d = (module.exports = function (dscr, value/*, options*/) {
	var c, e, w, options, desc;
	if (arguments.length < 2 || typeof dscr !== "string") {
		options = value;
		value = dscr;
		dscr = null;
	} else {
		options = arguments[2];
	}
	if (isValue(dscr)) {
		c = contains.call(dscr, "c");
		e = contains.call(dscr, "e");
		w = contains.call(dscr, "w");
	} else {
		c = w = true;
		e = false;
	}

	desc = { value: value, configurable: c, enumerable: e, writable: w };
	return !options ? desc : assign(normalizeOpts(options), desc);
});

d.gs = function (dscr, get, set/*, options*/) {
	var c, e, options, desc;
	if (typeof dscr !== "string") {
		options = set;
		set = get;
		get = dscr;
		dscr = null;
	} else {
		options = arguments[3];
	}
	if (!isValue(get)) {
		get = undefined;
	} else if (!isPlainFunction(get)) {
		options = get;
		get = set = undefined;
	} else if (!isValue(set)) {
		set = undefined;
	} else if (!isPlainFunction(set)) {
		options = set;
		set = undefined;
	}
	if (isValue(dscr)) {
		c = contains.call(dscr, "c");
		e = contains.call(dscr, "e");
	} else {
		c = true;
		e = false;
	}

	desc = { get: get, set: set, configurable: c, enumerable: e };
	return !options ? desc : assign(normalizeOpts(options), desc);
};

},{"es5-ext/object/assign":64,"es5-ext/object/normalize-options":76,"es5-ext/string/#/contains":84,"type/plain-function/is":153,"type/value/is":157}],47:[function(require,module,exports){
// Inspired by Google Closure:
// http://closure-library.googlecode.com/svn/docs/
// closure_goog_array_array.js.html#goog.array.clear

"use strict";

var value = require("../../object/valid-value");

module.exports = function () {
	value(this).length = 0;
	return this;
};

},{"../../object/valid-value":83}],48:[function(require,module,exports){
"use strict";

var numberIsNaN       = require("../../number/is-nan")
  , toPosInt          = require("../../number/to-pos-integer")
  , value             = require("../../object/valid-value")
  , indexOf           = Array.prototype.indexOf
  , objHasOwnProperty = Object.prototype.hasOwnProperty
  , abs               = Math.abs
  , floor             = Math.floor;

module.exports = function (searchElement/*, fromIndex*/) {
	var i, length, fromIndex, val;
	if (!numberIsNaN(searchElement)) return indexOf.apply(this, arguments);

	length = toPosInt(value(this).length);
	fromIndex = arguments[1];
	if (isNaN(fromIndex)) fromIndex = 0;
	else if (fromIndex >= 0) fromIndex = floor(fromIndex);
	else fromIndex = toPosInt(this.length) - floor(abs(fromIndex));

	for (i = fromIndex; i < length; ++i) {
		if (objHasOwnProperty.call(this, i)) {
			val = this[i];
			if (numberIsNaN(val)) return i; // Jslint: ignore
		}
	}
	return -1;
};

},{"../../number/is-nan":58,"../../number/to-pos-integer":62,"../../object/valid-value":83}],49:[function(require,module,exports){
"use strict";

module.exports = require("./is-implemented")() ? Array.from : require("./shim");

},{"./is-implemented":50,"./shim":51}],50:[function(require,module,exports){
"use strict";

module.exports = function () {
	var from = Array.from, arr, result;
	if (typeof from !== "function") return false;
	arr = ["raz", "dwa"];
	result = from(arr);
	return Boolean(result && result !== arr && result[1] === "dwa");
};

},{}],51:[function(require,module,exports){
"use strict";

var iteratorSymbol = require("es6-symbol").iterator
  , isArguments    = require("../../function/is-arguments")
  , isFunction     = require("../../function/is-function")
  , toPosInt       = require("../../number/to-pos-integer")
  , callable       = require("../../object/valid-callable")
  , validValue     = require("../../object/valid-value")
  , isValue        = require("../../object/is-value")
  , isString       = require("../../string/is-string")
  , isArray        = Array.isArray
  , call           = Function.prototype.call
  , desc           = { configurable: true, enumerable: true, writable: true, value: null }
  , defineProperty = Object.defineProperty;

// eslint-disable-next-line complexity, max-lines-per-function
module.exports = function (arrayLike/*, mapFn, thisArg*/) {
	var mapFn = arguments[1]
	  , thisArg = arguments[2]
	  , Context
	  , i
	  , j
	  , arr
	  , length
	  , code
	  , iterator
	  , result
	  , getIterator
	  , value;

	arrayLike = Object(validValue(arrayLike));

	if (isValue(mapFn)) callable(mapFn);
	if (!this || this === Array || !isFunction(this)) {
		// Result: Plain array
		if (!mapFn) {
			if (isArguments(arrayLike)) {
				// Source: Arguments
				length = arrayLike.length;
				if (length !== 1) return Array.apply(null, arrayLike);
				arr = new Array(1);
				arr[0] = arrayLike[0];
				return arr;
			}
			if (isArray(arrayLike)) {
				// Source: Array
				arr = new Array((length = arrayLike.length));
				for (i = 0; i < length; ++i) arr[i] = arrayLike[i];
				return arr;
			}
		}
		arr = [];
	} else {
		// Result: Non plain array
		Context = this;
	}

	if (!isArray(arrayLike)) {
		if ((getIterator = arrayLike[iteratorSymbol]) !== undefined) {
			// Source: Iterator
			iterator = callable(getIterator).call(arrayLike);
			if (Context) arr = new Context();
			result = iterator.next();
			i = 0;
			while (!result.done) {
				value = mapFn ? call.call(mapFn, thisArg, result.value, i) : result.value;
				if (Context) {
					desc.value = value;
					defineProperty(arr, i, desc);
				} else {
					arr[i] = value;
				}
				result = iterator.next();
				++i;
			}
			length = i;
		} else if (isString(arrayLike)) {
			// Source: String
			length = arrayLike.length;
			if (Context) arr = new Context();
			for (i = 0, j = 0; i < length; ++i) {
				value = arrayLike[i];
				if (i + 1 < length) {
					code = value.charCodeAt(0);
					// eslint-disable-next-line max-depth
					if (code >= 0xd800 && code <= 0xdbff) value += arrayLike[++i];
				}
				value = mapFn ? call.call(mapFn, thisArg, value, j) : value;
				if (Context) {
					desc.value = value;
					defineProperty(arr, j, desc);
				} else {
					arr[j] = value;
				}
				++j;
			}
			length = j;
		}
	}
	if (length === undefined) {
		// Source: array or array-like
		length = toPosInt(arrayLike.length);
		if (Context) arr = new Context(length);
		for (i = 0; i < length; ++i) {
			value = mapFn ? call.call(mapFn, thisArg, arrayLike[i], i) : arrayLike[i];
			if (Context) {
				desc.value = value;
				defineProperty(arr, i, desc);
			} else {
				arr[i] = value;
			}
		}
	}
	if (Context) {
		desc.value = null;
		arr.length = length;
	}
	return arr;
};

},{"../../function/is-arguments":52,"../../function/is-function":53,"../../number/to-pos-integer":62,"../../object/is-value":71,"../../object/valid-callable":81,"../../object/valid-value":83,"../../string/is-string":87,"es6-symbol":102}],52:[function(require,module,exports){
"use strict";

var objToString = Object.prototype.toString
  , id = objToString.call((function () { return arguments; })());

module.exports = function (value) { return objToString.call(value) === id; };

},{}],53:[function(require,module,exports){
"use strict";

var objToString = Object.prototype.toString
  , isFunctionStringTag = RegExp.prototype.test.bind(/^[object [A-Za-z0-9]*Function]$/);

module.exports = function (value) {
	return typeof value === "function" && isFunctionStringTag(objToString.call(value));
};

},{}],54:[function(require,module,exports){
"use strict";

// eslint-disable-next-line no-empty-function
module.exports = function () {};

},{}],55:[function(require,module,exports){
"use strict";

module.exports = require("./is-implemented")() ? Math.sign : require("./shim");

},{"./is-implemented":56,"./shim":57}],56:[function(require,module,exports){
"use strict";

module.exports = function () {
	var sign = Math.sign;
	if (typeof sign !== "function") return false;
	return sign(10) === 1 && sign(-20) === -1;
};

},{}],57:[function(require,module,exports){
"use strict";

module.exports = function (value) {
	value = Number(value);
	if (isNaN(value) || value === 0) return value;
	return value > 0 ? 1 : -1;
};

},{}],58:[function(require,module,exports){
"use strict";

module.exports = require("./is-implemented")() ? Number.isNaN : require("./shim");

},{"./is-implemented":59,"./shim":60}],59:[function(require,module,exports){
"use strict";

module.exports = function () {
	var numberIsNaN = Number.isNaN;
	if (typeof numberIsNaN !== "function") return false;
	return !numberIsNaN({}) && numberIsNaN(NaN) && !numberIsNaN(34);
};

},{}],60:[function(require,module,exports){
"use strict";

module.exports = function (value) {
	// eslint-disable-next-line no-self-compare
	return value !== value;
};

},{}],61:[function(require,module,exports){
"use strict";

var sign  = require("../math/sign")
  , abs   = Math.abs
  , floor = Math.floor;

module.exports = function (value) {
	if (isNaN(value)) return 0;
	value = Number(value);
	if (value === 0 || !isFinite(value)) return value;
	return sign(value) * floor(abs(value));
};

},{"../math/sign":55}],62:[function(require,module,exports){
"use strict";

var toInteger = require("./to-integer")
  , max       = Math.max;

module.exports = function (value) { return max(0, toInteger(value)); };

},{"./to-integer":61}],63:[function(require,module,exports){
// Internal method, used by iteration functions.
// Calls a function for each key-value pair found in object
// Optionally takes compareFn to iterate object in specific order

"use strict";

var callable                = require("./valid-callable")
  , value                   = require("./valid-value")
  , bind                    = Function.prototype.bind
  , call                    = Function.prototype.call
  , keys                    = Object.keys
  , objPropertyIsEnumerable = Object.prototype.propertyIsEnumerable;

module.exports = function (method, defVal) {
	return function (obj, cb/*, thisArg, compareFn*/) {
		var list, thisArg = arguments[2], compareFn = arguments[3];
		obj = Object(value(obj));
		callable(cb);

		list = keys(obj);
		if (compareFn) {
			list.sort(typeof compareFn === "function" ? bind.call(compareFn, obj) : undefined);
		}
		if (typeof method !== "function") method = list[method];
		return call.call(method, list, function (key, index) {
			if (!objPropertyIsEnumerable.call(obj, key)) return defVal;
			return call.call(cb, thisArg, obj[key], key, obj, index);
		});
	};
};

},{"./valid-callable":81,"./valid-value":83}],64:[function(require,module,exports){
"use strict";

module.exports = require("./is-implemented")() ? Object.assign : require("./shim");

},{"./is-implemented":65,"./shim":66}],65:[function(require,module,exports){
"use strict";

module.exports = function () {
	var assign = Object.assign, obj;
	if (typeof assign !== "function") return false;
	obj = { foo: "raz" };
	assign(obj, { bar: "dwa" }, { trzy: "trzy" });
	return obj.foo + obj.bar + obj.trzy === "razdwatrzy";
};

},{}],66:[function(require,module,exports){
"use strict";

var keys  = require("../keys")
  , value = require("../valid-value")
  , max   = Math.max;

module.exports = function (dest, src/*, …srcn*/) {
	var error, i, length = max(arguments.length, 2), assign;
	dest = Object(value(dest));
	assign = function (key) {
		try {
			dest[key] = src[key];
		} catch (e) {
			if (!error) error = e;
		}
	};
	for (i = 1; i < length; ++i) {
		src = arguments[i];
		keys(src).forEach(assign);
	}
	if (error !== undefined) throw error;
	return dest;
};

},{"../keys":72,"../valid-value":83}],67:[function(require,module,exports){
"use strict";

var aFrom  = require("../array/from")
  , assign = require("./assign")
  , value  = require("./valid-value");

module.exports = function (obj/*, propertyNames, options*/) {
	var copy = Object(value(obj)), propertyNames = arguments[1], options = Object(arguments[2]);
	if (copy !== obj && !propertyNames) return copy;
	var result = {};
	if (propertyNames) {
		aFrom(propertyNames, function (propertyName) {
			if (options.ensure || propertyName in obj) result[propertyName] = obj[propertyName];
		});
	} else {
		assign(result, obj);
	}
	return result;
};

},{"../array/from":49,"./assign":64,"./valid-value":83}],68:[function(require,module,exports){
// Workaround for http://code.google.com/p/v8/issues/detail?id=2804

"use strict";

var create = Object.create, shim;

if (!require("./set-prototype-of/is-implemented")()) {
	shim = require("./set-prototype-of/shim");
}

module.exports = (function () {
	var nullObject, polyProps, desc;
	if (!shim) return create;
	if (shim.level !== 1) return create;

	nullObject = {};
	polyProps = {};
	desc = { configurable: false, enumerable: false, writable: true, value: undefined };
	Object.getOwnPropertyNames(Object.prototype).forEach(function (name) {
		if (name === "__proto__") {
			polyProps[name] = {
				configurable: true,
				enumerable: false,
				writable: true,
				value: undefined
			};
			return;
		}
		polyProps[name] = desc;
	});
	Object.defineProperties(nullObject, polyProps);

	Object.defineProperty(shim, "nullPolyfill", {
		configurable: false,
		enumerable: false,
		writable: false,
		value: nullObject
	});

	return function (prototype, props) {
		return create(prototype === null ? nullObject : prototype, props);
	};
})();

},{"./set-prototype-of/is-implemented":79,"./set-prototype-of/shim":80}],69:[function(require,module,exports){
"use strict";

module.exports = require("./_iterate")("forEach");

},{"./_iterate":63}],70:[function(require,module,exports){
"use strict";

var isValue = require("./is-value");

var map = { function: true, object: true };

module.exports = function (value) { return (isValue(value) && map[typeof value]) || false; };

},{"./is-value":71}],71:[function(require,module,exports){
"use strict";

var _undefined = require("../function/noop")(); // Support ES3 engines

module.exports = function (val) { return val !== _undefined && val !== null; };

},{"../function/noop":54}],72:[function(require,module,exports){
"use strict";

module.exports = require("./is-implemented")() ? Object.keys : require("./shim");

},{"./is-implemented":73,"./shim":74}],73:[function(require,module,exports){
"use strict";

module.exports = function () {
	try {
		Object.keys("primitive");
		return true;
	} catch (e) {
		return false;
	}
};

},{}],74:[function(require,module,exports){
"use strict";

var isValue = require("../is-value");

var keys = Object.keys;

module.exports = function (object) { return keys(isValue(object) ? Object(object) : object); };

},{"../is-value":71}],75:[function(require,module,exports){
"use strict";

var callable = require("./valid-callable")
  , forEach  = require("./for-each")
  , call     = Function.prototype.call;

module.exports = function (obj, cb/*, thisArg*/) {
	var result = {}, thisArg = arguments[2];
	callable(cb);
	forEach(obj, function (value, key, targetObj, index) {
		result[key] = call.call(cb, thisArg, value, key, targetObj, index);
	});
	return result;
};

},{"./for-each":69,"./valid-callable":81}],76:[function(require,module,exports){
"use strict";

var isValue = require("./is-value");

var forEach = Array.prototype.forEach, create = Object.create;

var process = function (src, obj) {
	var key;
	for (key in src) obj[key] = src[key];
};

// eslint-disable-next-line no-unused-vars
module.exports = function (opts1/*, …options*/) {
	var result = create(null);
	forEach.call(arguments, function (options) {
		if (!isValue(options)) return;
		process(Object(options), result);
	});
	return result;
};

},{"./is-value":71}],77:[function(require,module,exports){
"use strict";

var forEach = Array.prototype.forEach, create = Object.create;

// eslint-disable-next-line no-unused-vars
module.exports = function (arg/*, …args*/) {
	var set = create(null);
	forEach.call(arguments, function (name) { set[name] = true; });
	return set;
};

},{}],78:[function(require,module,exports){
"use strict";

module.exports = require("./is-implemented")() ? Object.setPrototypeOf : require("./shim");

},{"./is-implemented":79,"./shim":80}],79:[function(require,module,exports){
"use strict";

var create = Object.create, getPrototypeOf = Object.getPrototypeOf, plainObject = {};

module.exports = function (/* CustomCreate*/) {
	var setPrototypeOf = Object.setPrototypeOf, customCreate = arguments[0] || create;
	if (typeof setPrototypeOf !== "function") return false;
	return getPrototypeOf(setPrototypeOf(customCreate(null), plainObject)) === plainObject;
};

},{}],80:[function(require,module,exports){
/* eslint no-proto: "off" */

// Big thanks to @WebReflection for sorting this out
// https://gist.github.com/WebReflection/5593554

"use strict";

var isObject         = require("../is-object")
  , value            = require("../valid-value")
  , objIsPrototypeOf = Object.prototype.isPrototypeOf
  , defineProperty   = Object.defineProperty
  , nullDesc         = { configurable: true, enumerable: false, writable: true, value: undefined }
  , validate;

validate = function (obj, prototype) {
	value(obj);
	if (prototype === null || isObject(prototype)) return obj;
	throw new TypeError("Prototype must be null or an object");
};

module.exports = (function (status) {
	var fn, set;
	if (!status) return null;
	if (status.level === 2) {
		if (status.set) {
			set = status.set;
			fn = function (obj, prototype) {
				set.call(validate(obj, prototype), prototype);
				return obj;
			};
		} else {
			fn = function (obj, prototype) {
				validate(obj, prototype).__proto__ = prototype;
				return obj;
			};
		}
	} else {
		fn = function self(obj, prototype) {
			var isNullBase;
			validate(obj, prototype);
			isNullBase = objIsPrototypeOf.call(self.nullPolyfill, obj);
			if (isNullBase) delete self.nullPolyfill.__proto__;
			if (prototype === null) prototype = self.nullPolyfill;
			obj.__proto__ = prototype;
			if (isNullBase) defineProperty(self.nullPolyfill, "__proto__", nullDesc);
			return obj;
		};
	}
	return Object.defineProperty(fn, "level", {
		configurable: false,
		enumerable: false,
		writable: false,
		value: status.level
	});
})(
	(function () {
		var tmpObj1 = Object.create(null)
		  , tmpObj2 = {}
		  , set
		  , desc = Object.getOwnPropertyDescriptor(Object.prototype, "__proto__");

		if (desc) {
			try {
				set = desc.set; // Opera crashes at this point
				set.call(tmpObj1, tmpObj2);
			} catch (ignore) {}
			if (Object.getPrototypeOf(tmpObj1) === tmpObj2) return { set: set, level: 2 };
		}

		tmpObj1.__proto__ = tmpObj2;
		if (Object.getPrototypeOf(tmpObj1) === tmpObj2) return { level: 2 };

		tmpObj1 = {};
		tmpObj1.__proto__ = tmpObj2;
		if (Object.getPrototypeOf(tmpObj1) === tmpObj2) return { level: 1 };

		return false;
	})()
);

require("../create");

},{"../create":68,"../is-object":70,"../valid-value":83}],81:[function(require,module,exports){
"use strict";

module.exports = function (fn) {
	if (typeof fn !== "function") throw new TypeError(fn + " is not a function");
	return fn;
};

},{}],82:[function(require,module,exports){
"use strict";

var isObject = require("./is-object");

module.exports = function (value) {
	if (!isObject(value)) throw new TypeError(value + " is not an Object");
	return value;
};

},{"./is-object":70}],83:[function(require,module,exports){
"use strict";

var isValue = require("./is-value");

module.exports = function (value) {
	if (!isValue(value)) throw new TypeError("Cannot use null or undefined");
	return value;
};

},{"./is-value":71}],84:[function(require,module,exports){
"use strict";

module.exports = require("./is-implemented")() ? String.prototype.contains : require("./shim");

},{"./is-implemented":85,"./shim":86}],85:[function(require,module,exports){
"use strict";

var str = "razdwatrzy";

module.exports = function () {
	if (typeof str.contains !== "function") return false;
	return str.contains("dwa") === true && str.contains("foo") === false;
};

},{}],86:[function(require,module,exports){
"use strict";

var indexOf = String.prototype.indexOf;

module.exports = function (searchString/*, position*/) {
	return indexOf.call(this, searchString, arguments[1]) > -1;
};

},{}],87:[function(require,module,exports){
"use strict";

var objToString = Object.prototype.toString, id = objToString.call("");

module.exports = function (value) {
	return (
		typeof value === "string" ||
		(value &&
			typeof value === "object" &&
			(value instanceof String || objToString.call(value) === id)) ||
		false
	);
};

},{}],88:[function(require,module,exports){
"use strict";

var generated = Object.create(null), random = Math.random;

module.exports = function () {
	var str;
	do {
		str = random().toString(36).slice(2);
	} while (generated[str]);
	return str;
};

},{}],89:[function(require,module,exports){
"use strict";

var setPrototypeOf = require("es5-ext/object/set-prototype-of")
  , contains       = require("es5-ext/string/#/contains")
  , d              = require("d")
  , Symbol         = require("es6-symbol")
  , Iterator       = require("./");

var defineProperty = Object.defineProperty, ArrayIterator;

ArrayIterator = module.exports = function (arr, kind) {
	if (!(this instanceof ArrayIterator)) throw new TypeError("Constructor requires 'new'");
	Iterator.call(this, arr);
	if (!kind) kind = "value";
	else if (contains.call(kind, "key+value")) kind = "key+value";
	else if (contains.call(kind, "key")) kind = "key";
	else kind = "value";
	defineProperty(this, "__kind__", d("", kind));
};
if (setPrototypeOf) setPrototypeOf(ArrayIterator, Iterator);

// Internal %ArrayIteratorPrototype% doesn't expose its constructor
delete ArrayIterator.prototype.constructor;

ArrayIterator.prototype = Object.create(Iterator.prototype, {
	_resolve: d(function (i) {
		if (this.__kind__ === "value") return this.__list__[i];
		if (this.__kind__ === "key+value") return [i, this.__list__[i]];
		return i;
	})
});
defineProperty(ArrayIterator.prototype, Symbol.toStringTag, d("c", "Array Iterator"));

},{"./":92,"d":46,"es5-ext/object/set-prototype-of":78,"es5-ext/string/#/contains":84,"es6-symbol":102}],90:[function(require,module,exports){
"use strict";

var isArguments = require("es5-ext/function/is-arguments")
  , callable    = require("es5-ext/object/valid-callable")
  , isString    = require("es5-ext/string/is-string")
  , get         = require("./get");

var isArray = Array.isArray, call = Function.prototype.call, some = Array.prototype.some;

module.exports = function (iterable, cb /*, thisArg*/) {
	var mode, thisArg = arguments[2], result, doBreak, broken, i, length, char, code;
	if (isArray(iterable) || isArguments(iterable)) mode = "array";
	else if (isString(iterable)) mode = "string";
	else iterable = get(iterable);

	callable(cb);
	doBreak = function () {
		broken = true;
	};
	if (mode === "array") {
		some.call(iterable, function (value) {
			call.call(cb, thisArg, value, doBreak);
			return broken;
		});
		return;
	}
	if (mode === "string") {
		length = iterable.length;
		for (i = 0; i < length; ++i) {
			char = iterable[i];
			if (i + 1 < length) {
				code = char.charCodeAt(0);
				if (code >= 0xd800 && code <= 0xdbff) char += iterable[++i];
			}
			call.call(cb, thisArg, char, doBreak);
			if (broken) break;
		}
		return;
	}
	result = iterable.next();

	while (!result.done) {
		call.call(cb, thisArg, result.value, doBreak);
		if (broken) return;
		result = iterable.next();
	}
};

},{"./get":91,"es5-ext/function/is-arguments":52,"es5-ext/object/valid-callable":81,"es5-ext/string/is-string":87}],91:[function(require,module,exports){
"use strict";

var isArguments    = require("es5-ext/function/is-arguments")
  , isString       = require("es5-ext/string/is-string")
  , ArrayIterator  = require("./array")
  , StringIterator = require("./string")
  , iterable       = require("./valid-iterable")
  , iteratorSymbol = require("es6-symbol").iterator;

module.exports = function (obj) {
	if (typeof iterable(obj)[iteratorSymbol] === "function") return obj[iteratorSymbol]();
	if (isArguments(obj)) return new ArrayIterator(obj);
	if (isString(obj)) return new StringIterator(obj);
	return new ArrayIterator(obj);
};

},{"./array":89,"./string":94,"./valid-iterable":95,"es5-ext/function/is-arguments":52,"es5-ext/string/is-string":87,"es6-symbol":102}],92:[function(require,module,exports){
"use strict";

var clear    = require("es5-ext/array/#/clear")
  , assign   = require("es5-ext/object/assign")
  , callable = require("es5-ext/object/valid-callable")
  , value    = require("es5-ext/object/valid-value")
  , d        = require("d")
  , autoBind = require("d/auto-bind")
  , Symbol   = require("es6-symbol");

var defineProperty = Object.defineProperty, defineProperties = Object.defineProperties, Iterator;

module.exports = Iterator = function (list, context) {
	if (!(this instanceof Iterator)) throw new TypeError("Constructor requires 'new'");
	defineProperties(this, {
		__list__: d("w", value(list)),
		__context__: d("w", context),
		__nextIndex__: d("w", 0)
	});
	if (!context) return;
	callable(context.on);
	context.on("_add", this._onAdd);
	context.on("_delete", this._onDelete);
	context.on("_clear", this._onClear);
};

// Internal %IteratorPrototype% doesn't expose its constructor
delete Iterator.prototype.constructor;

defineProperties(
	Iterator.prototype,
	assign(
		{
			_next: d(function () {
				var i;
				if (!this.__list__) return undefined;
				if (this.__redo__) {
					i = this.__redo__.shift();
					if (i !== undefined) return i;
				}
				if (this.__nextIndex__ < this.__list__.length) return this.__nextIndex__++;
				this._unBind();
				return undefined;
			}),
			next: d(function () {
				return this._createResult(this._next());
			}),
			_createResult: d(function (i) {
				if (i === undefined) return { done: true, value: undefined };
				return { done: false, value: this._resolve(i) };
			}),
			_resolve: d(function (i) {
				return this.__list__[i];
			}),
			_unBind: d(function () {
				this.__list__ = null;
				delete this.__redo__;
				if (!this.__context__) return;
				this.__context__.off("_add", this._onAdd);
				this.__context__.off("_delete", this._onDelete);
				this.__context__.off("_clear", this._onClear);
				this.__context__ = null;
			}),
			toString: d(function () {
				return "[object " + (this[Symbol.toStringTag] || "Object") + "]";
			})
		},
		autoBind({
			_onAdd: d(function (index) {
				if (index >= this.__nextIndex__) return;
				++this.__nextIndex__;
				if (!this.__redo__) {
					defineProperty(this, "__redo__", d("c", [index]));
					return;
				}
				this.__redo__.forEach(function (redo, i) {
					if (redo >= index) this.__redo__[i] = ++redo;
				}, this);
				this.__redo__.push(index);
			}),
			_onDelete: d(function (index) {
				var i;
				if (index >= this.__nextIndex__) return;
				--this.__nextIndex__;
				if (!this.__redo__) return;
				i = this.__redo__.indexOf(index);
				if (i !== -1) this.__redo__.splice(i, 1);
				this.__redo__.forEach(function (redo, j) {
					if (redo > index) this.__redo__[j] = --redo;
				}, this);
			}),
			_onClear: d(function () {
				if (this.__redo__) clear.call(this.__redo__);
				this.__nextIndex__ = 0;
			})
		})
	)
);

defineProperty(
	Iterator.prototype,
	Symbol.iterator,
	d(function () {
		return this;
	})
);

},{"d":46,"d/auto-bind":45,"es5-ext/array/#/clear":47,"es5-ext/object/assign":64,"es5-ext/object/valid-callable":81,"es5-ext/object/valid-value":83,"es6-symbol":102}],93:[function(require,module,exports){
"use strict";

var isArguments = require("es5-ext/function/is-arguments")
  , isValue     = require("es5-ext/object/is-value")
  , isString    = require("es5-ext/string/is-string");

var iteratorSymbol = require("es6-symbol").iterator
  , isArray        = Array.isArray;

module.exports = function (value) {
	if (!isValue(value)) return false;
	if (isArray(value)) return true;
	if (isString(value)) return true;
	if (isArguments(value)) return true;
	return typeof value[iteratorSymbol] === "function";
};

},{"es5-ext/function/is-arguments":52,"es5-ext/object/is-value":71,"es5-ext/string/is-string":87,"es6-symbol":102}],94:[function(require,module,exports){
// Thanks @mathiasbynens
// http://mathiasbynens.be/notes/javascript-unicode#iterating-over-symbols

"use strict";

var setPrototypeOf = require("es5-ext/object/set-prototype-of")
  , d              = require("d")
  , Symbol         = require("es6-symbol")
  , Iterator       = require("./");

var defineProperty = Object.defineProperty, StringIterator;

StringIterator = module.exports = function (str) {
	if (!(this instanceof StringIterator)) throw new TypeError("Constructor requires 'new'");
	str = String(str);
	Iterator.call(this, str);
	defineProperty(this, "__length__", d("", str.length));
};
if (setPrototypeOf) setPrototypeOf(StringIterator, Iterator);

// Internal %ArrayIteratorPrototype% doesn't expose its constructor
delete StringIterator.prototype.constructor;

StringIterator.prototype = Object.create(Iterator.prototype, {
	_next: d(function () {
		if (!this.__list__) return undefined;
		if (this.__nextIndex__ < this.__length__) return this.__nextIndex__++;
		this._unBind();
		return undefined;
	}),
	_resolve: d(function (i) {
		var char = this.__list__[i], code;
		if (this.__nextIndex__ === this.__length__) return char;
		code = char.charCodeAt(0);
		if (code >= 0xd800 && code <= 0xdbff) return char + this.__list__[this.__nextIndex__++];
		return char;
	})
});
defineProperty(StringIterator.prototype, Symbol.toStringTag, d("c", "String Iterator"));

},{"./":92,"d":46,"es5-ext/object/set-prototype-of":78,"es6-symbol":102}],95:[function(require,module,exports){
"use strict";

var isIterable = require("./is-iterable");

module.exports = function (value) {
	if (!isIterable(value)) throw new TypeError(value + " is not iterable");
	return value;
};

},{"./is-iterable":93}],96:[function(require,module,exports){
'use strict';

module.exports = require('./is-implemented')() ? Map : require('./polyfill');

},{"./is-implemented":97,"./polyfill":101}],97:[function(require,module,exports){
'use strict';

module.exports = function () {
	var map, iterator, result;
	if (typeof Map !== 'function') return false;
	try {
		// WebKit doesn't support arguments and crashes
		map = new Map([['raz', 'one'], ['dwa', 'two'], ['trzy', 'three']]);
	} catch (e) {
		return false;
	}
	if (String(map) !== '[object Map]') return false;
	if (map.size !== 3) return false;
	if (typeof map.clear !== 'function') return false;
	if (typeof map.delete !== 'function') return false;
	if (typeof map.entries !== 'function') return false;
	if (typeof map.forEach !== 'function') return false;
	if (typeof map.get !== 'function') return false;
	if (typeof map.has !== 'function') return false;
	if (typeof map.keys !== 'function') return false;
	if (typeof map.set !== 'function') return false;
	if (typeof map.values !== 'function') return false;

	iterator = map.entries();
	result = iterator.next();
	if (result.done !== false) return false;
	if (!result.value) return false;
	if (result.value[0] !== 'raz') return false;
	if (result.value[1] !== 'one') return false;

	return true;
};

},{}],98:[function(require,module,exports){
// Exports true if environment provides native `Map` implementation,
// whatever that is.

'use strict';

module.exports = (function () {
	if (typeof Map === 'undefined') return false;
	return (Object.prototype.toString.call(new Map()) === '[object Map]');
}());

},{}],99:[function(require,module,exports){
'use strict';

module.exports = require('es5-ext/object/primitive-set')('key',
	'value', 'key+value');

},{"es5-ext/object/primitive-set":77}],100:[function(require,module,exports){
'use strict';

var setPrototypeOf    = require('es5-ext/object/set-prototype-of')
  , d                 = require('d')
  , Iterator          = require('es6-iterator')
  , toStringTagSymbol = require('es6-symbol').toStringTag
  , kinds             = require('./iterator-kinds')

  , defineProperties = Object.defineProperties
  , unBind = Iterator.prototype._unBind
  , MapIterator;

MapIterator = module.exports = function (map, kind) {
	if (!(this instanceof MapIterator)) return new MapIterator(map, kind);
	Iterator.call(this, map.__mapKeysData__, map);
	if (!kind || !kinds[kind]) kind = 'key+value';
	defineProperties(this, {
		__kind__: d('', kind),
		__values__: d('w', map.__mapValuesData__)
	});
};
if (setPrototypeOf) setPrototypeOf(MapIterator, Iterator);

MapIterator.prototype = Object.create(Iterator.prototype, {
	constructor: d(MapIterator),
	_resolve: d(function (i) {
		if (this.__kind__ === 'value') return this.__values__[i];
		if (this.__kind__ === 'key') return this.__list__[i];
		return [this.__list__[i], this.__values__[i]];
	}),
	_unBind: d(function () {
		this.__values__ = null;
		unBind.call(this);
	}),
	toString: d(function () { return '[object Map Iterator]'; })
});
Object.defineProperty(MapIterator.prototype, toStringTagSymbol,
	d('c', 'Map Iterator'));

},{"./iterator-kinds":99,"d":46,"es5-ext/object/set-prototype-of":78,"es6-iterator":92,"es6-symbol":102}],101:[function(require,module,exports){
'use strict';

var clear          = require('es5-ext/array/#/clear')
  , eIndexOf       = require('es5-ext/array/#/e-index-of')
  , setPrototypeOf = require('es5-ext/object/set-prototype-of')
  , callable       = require('es5-ext/object/valid-callable')
  , validValue     = require('es5-ext/object/valid-value')
  , d              = require('d')
  , ee             = require('event-emitter')
  , Symbol         = require('es6-symbol')
  , iterator       = require('es6-iterator/valid-iterable')
  , forOf          = require('es6-iterator/for-of')
  , Iterator       = require('./lib/iterator')
  , isNative       = require('./is-native-implemented')

  , call = Function.prototype.call
  , defineProperties = Object.defineProperties, getPrototypeOf = Object.getPrototypeOf
  , MapPoly;

module.exports = MapPoly = function (/*iterable*/) {
	var iterable = arguments[0], keys, values, self;
	if (!(this instanceof MapPoly)) throw new TypeError('Constructor requires \'new\'');
	if (isNative && setPrototypeOf && (Map !== MapPoly)) {
		self = setPrototypeOf(new Map(), getPrototypeOf(this));
	} else {
		self = this;
	}
	if (iterable != null) iterator(iterable);
	defineProperties(self, {
		__mapKeysData__: d('c', keys = []),
		__mapValuesData__: d('c', values = [])
	});
	if (!iterable) return self;
	forOf(iterable, function (value) {
		var key = validValue(value)[0];
		value = value[1];
		if (eIndexOf.call(keys, key) !== -1) return;
		keys.push(key);
		values.push(value);
	}, self);
	return self;
};

if (isNative) {
	if (setPrototypeOf) setPrototypeOf(MapPoly, Map);
	MapPoly.prototype = Object.create(Map.prototype, {
		constructor: d(MapPoly)
	});
}

ee(defineProperties(MapPoly.prototype, {
	clear: d(function () {
		if (!this.__mapKeysData__.length) return;
		clear.call(this.__mapKeysData__);
		clear.call(this.__mapValuesData__);
		this.emit('_clear');
	}),
	delete: d(function (key) {
		var index = eIndexOf.call(this.__mapKeysData__, key);
		if (index === -1) return false;
		this.__mapKeysData__.splice(index, 1);
		this.__mapValuesData__.splice(index, 1);
		this.emit('_delete', index, key);
		return true;
	}),
	entries: d(function () { return new Iterator(this, 'key+value'); }),
	forEach: d(function (cb/*, thisArg*/) {
		var thisArg = arguments[1], iterator, result;
		callable(cb);
		iterator = this.entries();
		result = iterator._next();
		while (result !== undefined) {
			call.call(cb, thisArg, this.__mapValuesData__[result],
				this.__mapKeysData__[result], this);
			result = iterator._next();
		}
	}),
	get: d(function (key) {
		var index = eIndexOf.call(this.__mapKeysData__, key);
		if (index === -1) return;
		return this.__mapValuesData__[index];
	}),
	has: d(function (key) {
		return (eIndexOf.call(this.__mapKeysData__, key) !== -1);
	}),
	keys: d(function () { return new Iterator(this, 'key'); }),
	set: d(function (key, value) {
		var index = eIndexOf.call(this.__mapKeysData__, key), emit;
		if (index === -1) {
			index = this.__mapKeysData__.push(key) - 1;
			emit = true;
		}
		this.__mapValuesData__[index] = value;
		if (emit) this.emit('_add', index, key);
		return this;
	}),
	size: d.gs(function () { return this.__mapKeysData__.length; }),
	values: d(function () { return new Iterator(this, 'value'); }),
	toString: d(function () { return '[object Map]'; })
}));
Object.defineProperty(MapPoly.prototype, Symbol.iterator, d(function () {
	return this.entries();
}));
Object.defineProperty(MapPoly.prototype, Symbol.toStringTag, d('c', 'Map'));

},{"./is-native-implemented":98,"./lib/iterator":100,"d":46,"es5-ext/array/#/clear":47,"es5-ext/array/#/e-index-of":48,"es5-ext/object/set-prototype-of":78,"es5-ext/object/valid-callable":81,"es5-ext/object/valid-value":83,"es6-iterator/for-of":90,"es6-iterator/valid-iterable":95,"es6-symbol":102,"event-emitter":135}],102:[function(require,module,exports){
"use strict";

module.exports = require("./is-implemented")()
	? require("ext/global-this").Symbol
	: require("./polyfill");

},{"./is-implemented":103,"./polyfill":108,"ext/global-this":137}],103:[function(require,module,exports){
"use strict";

var global     = require("ext/global-this")
  , validTypes = { object: true, symbol: true };

module.exports = function () {
	var Symbol = global.Symbol;
	var symbol;
	if (typeof Symbol !== "function") return false;
	symbol = Symbol("test symbol");
	try { String(symbol); }
	catch (e) { return false; }

	// Return 'true' also for polyfills
	if (!validTypes[typeof Symbol.iterator]) return false;
	if (!validTypes[typeof Symbol.toPrimitive]) return false;
	if (!validTypes[typeof Symbol.toStringTag]) return false;

	return true;
};

},{"ext/global-this":137}],104:[function(require,module,exports){
"use strict";

module.exports = function (value) {
	if (!value) return false;
	if (typeof value === "symbol") return true;
	if (!value.constructor) return false;
	if (value.constructor.name !== "Symbol") return false;
	return value[value.constructor.toStringTag] === "Symbol";
};

},{}],105:[function(require,module,exports){
"use strict";

var d = require("d");

var create = Object.create, defineProperty = Object.defineProperty, objPrototype = Object.prototype;

var created = create(null);
module.exports = function (desc) {
	var postfix = 0, name, ie11BugWorkaround;
	while (created[desc + (postfix || "")]) ++postfix;
	desc += postfix || "";
	created[desc] = true;
	name = "@@" + desc;
	defineProperty(
		objPrototype,
		name,
		d.gs(null, function (value) {
			// For IE11 issue see:
			// https://connect.microsoft.com/IE/feedbackdetail/view/1928508/
			//    ie11-broken-getters-on-dom-objects
			// https://github.com/medikoo/es6-symbol/issues/12
			if (ie11BugWorkaround) return;
			ie11BugWorkaround = true;
			defineProperty(this, name, d(value));
			ie11BugWorkaround = false;
		})
	);
	return name;
};

},{"d":46}],106:[function(require,module,exports){
"use strict";

var d            = require("d")
  , NativeSymbol = require("ext/global-this").Symbol;

module.exports = function (SymbolPolyfill) {
	return Object.defineProperties(SymbolPolyfill, {
		// To ensure proper interoperability with other native functions (e.g. Array.from)
		// fallback to eventual native implementation of given symbol
		hasInstance: d(
			"", (NativeSymbol && NativeSymbol.hasInstance) || SymbolPolyfill("hasInstance")
		),
		isConcatSpreadable: d(
			"",
			(NativeSymbol && NativeSymbol.isConcatSpreadable) ||
				SymbolPolyfill("isConcatSpreadable")
		),
		iterator: d("", (NativeSymbol && NativeSymbol.iterator) || SymbolPolyfill("iterator")),
		match: d("", (NativeSymbol && NativeSymbol.match) || SymbolPolyfill("match")),
		replace: d("", (NativeSymbol && NativeSymbol.replace) || SymbolPolyfill("replace")),
		search: d("", (NativeSymbol && NativeSymbol.search) || SymbolPolyfill("search")),
		species: d("", (NativeSymbol && NativeSymbol.species) || SymbolPolyfill("species")),
		split: d("", (NativeSymbol && NativeSymbol.split) || SymbolPolyfill("split")),
		toPrimitive: d(
			"", (NativeSymbol && NativeSymbol.toPrimitive) || SymbolPolyfill("toPrimitive")
		),
		toStringTag: d(
			"", (NativeSymbol && NativeSymbol.toStringTag) || SymbolPolyfill("toStringTag")
		),
		unscopables: d(
			"", (NativeSymbol && NativeSymbol.unscopables) || SymbolPolyfill("unscopables")
		)
	});
};

},{"d":46,"ext/global-this":137}],107:[function(require,module,exports){
"use strict";

var d              = require("d")
  , validateSymbol = require("../../../validate-symbol");

var registry = Object.create(null);

module.exports = function (SymbolPolyfill) {
	return Object.defineProperties(SymbolPolyfill, {
		for: d(function (key) {
			if (registry[key]) return registry[key];
			return (registry[key] = SymbolPolyfill(String(key)));
		}),
		keyFor: d(function (symbol) {
			var key;
			validateSymbol(symbol);
			for (key in registry) {
				if (registry[key] === symbol) return key;
			}
			return undefined;
		})
	});
};

},{"../../../validate-symbol":109,"d":46}],108:[function(require,module,exports){
// ES2015 Symbol polyfill for environments that do not (or partially) support it

"use strict";

var d                    = require("d")
  , validateSymbol       = require("./validate-symbol")
  , NativeSymbol         = require("ext/global-this").Symbol
  , generateName         = require("./lib/private/generate-name")
  , setupStandardSymbols = require("./lib/private/setup/standard-symbols")
  , setupSymbolRegistry  = require("./lib/private/setup/symbol-registry");

var create = Object.create
  , defineProperties = Object.defineProperties
  , defineProperty = Object.defineProperty;

var SymbolPolyfill, HiddenSymbol, isNativeSafe;

if (typeof NativeSymbol === "function") {
	try {
		String(NativeSymbol());
		isNativeSafe = true;
	} catch (ignore) {}
} else {
	NativeSymbol = null;
}

// Internal constructor (not one exposed) for creating Symbol instances.
// This one is used to ensure that `someSymbol instanceof Symbol` always return false
HiddenSymbol = function Symbol(description) {
	if (this instanceof HiddenSymbol) throw new TypeError("Symbol is not a constructor");
	return SymbolPolyfill(description);
};

// Exposed `Symbol` constructor
// (returns instances of HiddenSymbol)
module.exports = SymbolPolyfill = function Symbol(description) {
	var symbol;
	if (this instanceof Symbol) throw new TypeError("Symbol is not a constructor");
	if (isNativeSafe) return NativeSymbol(description);
	symbol = create(HiddenSymbol.prototype);
	description = description === undefined ? "" : String(description);
	return defineProperties(symbol, {
		__description__: d("", description),
		__name__: d("", generateName(description))
	});
};

setupStandardSymbols(SymbolPolyfill);
setupSymbolRegistry(SymbolPolyfill);

// Internal tweaks for real symbol producer
defineProperties(HiddenSymbol.prototype, {
	constructor: d(SymbolPolyfill),
	toString: d("", function () { return this.__name__; })
});

// Proper implementation of methods exposed on Symbol.prototype
// They won't be accessible on produced symbol instances as they derive from HiddenSymbol.prototype
defineProperties(SymbolPolyfill.prototype, {
	toString: d(function () { return "Symbol (" + validateSymbol(this).__description__ + ")"; }),
	valueOf: d(function () { return validateSymbol(this); })
});
defineProperty(
	SymbolPolyfill.prototype,
	SymbolPolyfill.toPrimitive,
	d("", function () {
		var symbol = validateSymbol(this);
		if (typeof symbol === "symbol") return symbol;
		return symbol.toString();
	})
);
defineProperty(SymbolPolyfill.prototype, SymbolPolyfill.toStringTag, d("c", "Symbol"));

// Proper implementaton of toPrimitive and toStringTag for returned symbol instances
defineProperty(
	HiddenSymbol.prototype, SymbolPolyfill.toStringTag,
	d("c", SymbolPolyfill.prototype[SymbolPolyfill.toStringTag])
);

// Note: It's important to define `toPrimitive` as last one, as some implementations
// implement `toPrimitive` natively without implementing `toStringTag` (or other specified symbols)
// And that may invoke error in definition flow:
// See: https://github.com/medikoo/es6-symbol/issues/13#issuecomment-164146149
defineProperty(
	HiddenSymbol.prototype, SymbolPolyfill.toPrimitive,
	d("c", SymbolPolyfill.prototype[SymbolPolyfill.toPrimitive])
);

},{"./lib/private/generate-name":105,"./lib/private/setup/standard-symbols":106,"./lib/private/setup/symbol-registry":107,"./validate-symbol":109,"d":46,"ext/global-this":137}],109:[function(require,module,exports){
"use strict";

var isSymbol = require("./is-symbol");

module.exports = function (value) {
	if (!isSymbol(value)) throw new TypeError(value + " is not a symbol");
	return value;
};

},{"./is-symbol":104}],110:[function(require,module,exports){
"use strict";

module.exports = require("./is-implemented")() ? WeakMap : require("./polyfill");

},{"./is-implemented":111,"./polyfill":113}],111:[function(require,module,exports){
"use strict";

module.exports = function () {
	var weakMap, obj;

	if (typeof WeakMap !== "function") return false;
	try {
		// WebKit doesn't support arguments and crashes
		weakMap = new WeakMap([[obj = {}, "one"], [{}, "two"], [{}, "three"]]);
	} catch (e) {
		return false;
	}
	if (String(weakMap) !== "[object WeakMap]") return false;
	if (typeof weakMap.set !== "function") return false;
	if (weakMap.set({}, 1) !== weakMap) return false;
	if (typeof weakMap.delete !== "function") return false;
	if (typeof weakMap.has !== "function") return false;
	if (weakMap.get(obj) !== "one") return false;

	return true;
};

},{}],112:[function(require,module,exports){
// Exports true if environment provides native `WeakMap` implementation, whatever that is.

"use strict";

module.exports = (function () {
	if (typeof WeakMap !== "function") return false;
	return Object.prototype.toString.call(new WeakMap()) === "[object WeakMap]";
}());

},{}],113:[function(require,module,exports){
"use strict";

var isValue           = require("es5-ext/object/is-value")
  , setPrototypeOf    = require("es5-ext/object/set-prototype-of")
  , object            = require("es5-ext/object/valid-object")
  , ensureValue       = require("es5-ext/object/valid-value")
  , randomUniq        = require("es5-ext/string/random-uniq")
  , d                 = require("d")
  , getIterator       = require("es6-iterator/get")
  , forOf             = require("es6-iterator/for-of")
  , toStringTagSymbol = require("es6-symbol").toStringTag
  , isNative          = require("./is-native-implemented")

  , isArray = Array.isArray, defineProperty = Object.defineProperty
  , objHasOwnProperty = Object.prototype.hasOwnProperty, getPrototypeOf = Object.getPrototypeOf
  , WeakMapPoly;

module.exports = WeakMapPoly = function (/* Iterable*/) {
	var iterable = arguments[0], self;

	if (!(this instanceof WeakMapPoly)) throw new TypeError("Constructor requires 'new'");
	self = isNative && setPrototypeOf && (WeakMap !== WeakMapPoly)
		? setPrototypeOf(new WeakMap(), getPrototypeOf(this)) : this;

	if (isValue(iterable)) {
		if (!isArray(iterable)) iterable = getIterator(iterable);
	}
	defineProperty(self, "__weakMapData__", d("c", "$weakMap$" + randomUniq()));
	if (!iterable) return self;
	forOf(iterable, function (val) {
		ensureValue(val);
		self.set(val[0], val[1]);
	});
	return self;
};

if (isNative) {
	if (setPrototypeOf) setPrototypeOf(WeakMapPoly, WeakMap);
	WeakMapPoly.prototype = Object.create(WeakMap.prototype, { constructor: d(WeakMapPoly) });
}

Object.defineProperties(WeakMapPoly.prototype, {
	delete: d(function (key) {
		if (objHasOwnProperty.call(object(key), this.__weakMapData__)) {
			delete key[this.__weakMapData__];
			return true;
		}
		return false;
	}),
	get: d(function (key) {
		if (!objHasOwnProperty.call(object(key), this.__weakMapData__)) return undefined;
		return key[this.__weakMapData__];
	}),
	has: d(function (key) {
		return objHasOwnProperty.call(object(key), this.__weakMapData__);
	}),
	set: d(function (key, value) {
		defineProperty(object(key), this.__weakMapData__, d("c", value));
		return this;
	}),
	toString: d(function () {
		return "[object WeakMap]";
	})
});
defineProperty(WeakMapPoly.prototype, toStringTagSymbol, d("c", "WeakMap"));

},{"./is-native-implemented":112,"d":46,"es5-ext/object/is-value":71,"es5-ext/object/set-prototype-of":78,"es5-ext/object/valid-object":82,"es5-ext/object/valid-value":83,"es5-ext/string/random-uniq":88,"es6-iterator/for-of":90,"es6-iterator/get":91,"es6-symbol":102}],114:[function(require,module,exports){
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.Definition = exports.ParameterDefinition = undefined;

var _variable = require('./variable');

var _variable2 = _interopRequireDefault(_variable);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } /*
                                                                                                                                                            Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
                                                                                                                                                          
                                                                                                                                                            Redistribution and use in source and binary forms, with or without
                                                                                                                                                            modification, are permitted provided that the following conditions are met:
                                                                                                                                                          
                                                                                                                                                              * Redistributions of source code must retain the above copyright
                                                                                                                                                                notice, this list of conditions and the following disclaimer.
                                                                                                                                                              * Redistributions in binary form must reproduce the above copyright
                                                                                                                                                                notice, this list of conditions and the following disclaimer in the
                                                                                                                                                                documentation and/or other materials provided with the distribution.
                                                                                                                                                          
                                                                                                                                                            THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
                                                                                                                                                            AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                                                                                                                                                            IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                                                                                                                                                            ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
                                                                                                                                                            DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                                                                                                                                                            (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
                                                                                                                                                            LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
                                                                                                                                                            ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                                                                                                                                                            (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                                                                                                                                                            THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                                                                                                                                                          */

/**
 * @class Definition
 */

var Definition = function Definition(type, name, node, parent, index, kind) {
  _classCallCheck(this, Definition);

  /**
   * @member {String} Definition#type - type of the occurrence (e.g. "Parameter", "Variable", ...).
   */
  this.type = type;
  /**
   * @member {esprima.Identifier} Definition#name - the identifier AST node of the occurrence.
   */
  this.name = name;
  /**
   * @member {esprima.Node} Definition#node - the enclosing node of the identifier.
   */
  this.node = node;
  /**
   * @member {esprima.Node?} Definition#parent - the enclosing statement node of the identifier.
   */
  this.parent = parent;
  /**
   * @member {Number?} Definition#index - the index in the declaration statement.
   */
  this.index = index;
  /**
   * @member {String?} Definition#kind - the kind of the declaration statement.
   */
  this.kind = kind;
};

/**
 * @class ParameterDefinition
 */


exports.default = Definition;

var ParameterDefinition = function (_Definition) {
  _inherits(ParameterDefinition, _Definition);

  function ParameterDefinition(name, node, index, rest) {
    _classCallCheck(this, ParameterDefinition);

    /**
     * Whether the parameter definition is a part of a rest parameter.
     * @member {boolean} ParameterDefinition#rest
     */

    var _this = _possibleConstructorReturn(this, Object.getPrototypeOf(ParameterDefinition).call(this, _variable2.default.Parameter, name, node, null, index, null));

    _this.rest = rest;
    return _this;
  }

  return ParameterDefinition;
}(Definition);

exports.ParameterDefinition = ParameterDefinition;
exports.Definition = Definition;

/* vim: set sw=4 ts=4 et tw=80 : */


},{"./variable":121}],115:[function(require,module,exports){
'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.ScopeManager = exports.Scope = exports.Variable = exports.Reference = exports.version = undefined;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; }; /*
                                                                                                                                                                                                                                                    Copyright (C) 2012-2014 Yusuke Suzuki <utatane.tea@gmail.com>
                                                                                                                                                                                                                                                    Copyright (C) 2013 Alex Seville <hi@alexanderseville.com>
                                                                                                                                                                                                                                                    Copyright (C) 2014 Thiago de Arruda <tpadilha84@gmail.com>
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                    Redistribution and use in source and binary forms, with or without
                                                                                                                                                                                                                                                    modification, are permitted provided that the following conditions are met:
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                      * Redistributions of source code must retain the above copyright
                                                                                                                                                                                                                                                        notice, this list of conditions and the following disclaimer.
                                                                                                                                                                                                                                                      * Redistributions in binary form must reproduce the above copyright
                                                                                                                                                                                                                                                        notice, this list of conditions and the following disclaimer in the
                                                                                                                                                                                                                                                        documentation and/or other materials provided with the distribution.
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
                                                                                                                                                                                                                                                    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                                                                                                                                                                                                                                                    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                                                                                                                                                                                                                                                    ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
                                                                                                                                                                                                                                                    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                                                                                                                                                                                                                                                    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
                                                                                                                                                                                                                                                    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
                                                                                                                                                                                                                                                    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                                                                                                                                                                                                                                                    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                                                                                                                                                                                                                                                    THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                                                                                                                                                                                                                                                  */

/**
 * Escope (<a href="http://github.com/estools/escope">escope</a>) is an <a
 * href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">ECMAScript</a>
 * scope analyzer extracted from the <a
 * href="http://github.com/estools/esmangle">esmangle project</a/>.
 * <p>
 * <em>escope</em> finds lexical scopes in a source program, i.e. areas of that
 * program where different occurrences of the same identifier refer to the same
 * variable. With each scope the contained variables are collected, and each
 * identifier reference in code is linked to its corresponding variable (if
 * possible).
 * <p>
 * <em>escope</em> works on a syntax tree of the parsed source code which has
 * to adhere to the <a
 * href="https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API">
 * Mozilla Parser API</a>. E.g. <a href="http://esprima.org">esprima</a> is a parser
 * that produces such syntax trees.
 * <p>
 * The main interface is the {@link analyze} function.
 * @module escope
 */

/*jslint bitwise:true */

exports.analyze = analyze;

var _assert = require('assert');

var _assert2 = _interopRequireDefault(_assert);

var _scopeManager = require('./scope-manager');

var _scopeManager2 = _interopRequireDefault(_scopeManager);

var _referencer = require('./referencer');

var _referencer2 = _interopRequireDefault(_referencer);

var _reference = require('./reference');

var _reference2 = _interopRequireDefault(_reference);

var _variable = require('./variable');

var _variable2 = _interopRequireDefault(_variable);

var _scope = require('./scope');

var _scope2 = _interopRequireDefault(_scope);

var _package = require('../package.json');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function defaultOptions() {
    return {
        optimistic: false,
        directive: false,
        nodejsScope: false,
        impliedStrict: false,
        sourceType: 'script', // one of ['script', 'module']
        ecmaVersion: 5,
        childVisitorKeys: null,
        fallback: 'iteration'
    };
}

function updateDeeply(target, override) {
    var key, val;

    function isHashObject(target) {
        return (typeof target === 'undefined' ? 'undefined' : _typeof(target)) === 'object' && target instanceof Object && !(target instanceof Array) && !(target instanceof RegExp);
    }

    for (key in override) {
        if (override.hasOwnProperty(key)) {
            val = override[key];
            if (isHashObject(val)) {
                if (isHashObject(target[key])) {
                    updateDeeply(target[key], val);
                } else {
                    target[key] = updateDeeply({}, val);
                }
            } else {
                target[key] = val;
            }
        }
    }
    return target;
}

/**
 * Main interface function. Takes an Esprima syntax tree and returns the
 * analyzed scopes.
 * @function analyze
 * @param {esprima.Tree} tree
 * @param {Object} providedOptions - Options that tailor the scope analysis
 * @param {boolean} [providedOptions.optimistic=false] - the optimistic flag
 * @param {boolean} [providedOptions.directive=false]- the directive flag
 * @param {boolean} [providedOptions.ignoreEval=false]- whether to check 'eval()' calls
 * @param {boolean} [providedOptions.nodejsScope=false]- whether the whole
 * script is executed under node.js environment. When enabled, escope adds
 * a function scope immediately following the global scope.
 * @param {boolean} [providedOptions.impliedStrict=false]- implied strict mode
 * (if ecmaVersion >= 5).
 * @param {string} [providedOptions.sourceType='script']- the source type of the script. one of 'script' and 'module'
 * @param {number} [providedOptions.ecmaVersion=5]- which ECMAScript version is considered
 * @param {Object} [providedOptions.childVisitorKeys=null] - Additional known visitor keys. See [esrecurse](https://github.com/estools/esrecurse)'s the `childVisitorKeys` option.
 * @param {string} [providedOptions.fallback='iteration'] - A kind of the fallback in order to encounter with unknown node. See [esrecurse](https://github.com/estools/esrecurse)'s the `fallback` option.
 * @return {ScopeManager}
 */
function analyze(tree, providedOptions) {
    var scopeManager, referencer, options;

    options = updateDeeply(defaultOptions(), providedOptions);

    scopeManager = new _scopeManager2.default(options);

    referencer = new _referencer2.default(options, scopeManager);
    referencer.visit(tree);

    (0, _assert2.default)(scopeManager.__currentScope === null, 'currentScope should be null.');

    return scopeManager;
}

exports.
/** @name module:escope.version */
version = _package.version;
exports.
/** @name module:escope.Reference */
Reference = _reference2.default;
exports.
/** @name module:escope.Variable */
Variable = _variable2.default;
exports.
/** @name module:escope.Scope */
Scope = _scope2.default;
exports.
/** @name module:escope.ScopeManager */
ScopeManager = _scopeManager2.default;

/* vim: set sw=4 ts=4 et tw=80 : */


},{"../package.json":122,"./reference":117,"./referencer":118,"./scope":120,"./scope-manager":119,"./variable":121,"assert":40}],116:[function(require,module,exports){
'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _estraverse = require('estraverse');

var _esrecurse = require('esrecurse');

var _esrecurse2 = _interopRequireDefault(_esrecurse);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Redistribution and use in source and binary forms, with or without
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 modification, are permitted provided that the following conditions are met:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   * Redistributions of source code must retain the above copyright
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     notice, this list of conditions and the following disclaimer.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   * Redistributions in binary form must reproduce the above copyright
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     notice, this list of conditions and the following disclaimer in the
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     documentation and/or other materials provided with the distribution.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               */

function getLast(xs) {
    return xs[xs.length - 1] || null;
}

var PatternVisitor = function (_esrecurse$Visitor) {
    _inherits(PatternVisitor, _esrecurse$Visitor);

    _createClass(PatternVisitor, null, [{
        key: 'isPattern',
        value: function isPattern(node) {
            var nodeType = node.type;
            return nodeType === _estraverse.Syntax.Identifier || nodeType === _estraverse.Syntax.ObjectPattern || nodeType === _estraverse.Syntax.ArrayPattern || nodeType === _estraverse.Syntax.SpreadElement || nodeType === _estraverse.Syntax.RestElement || nodeType === _estraverse.Syntax.AssignmentPattern;
        }
    }]);

    function PatternVisitor(options, rootPattern, callback) {
        _classCallCheck(this, PatternVisitor);

        var _this = _possibleConstructorReturn(this, Object.getPrototypeOf(PatternVisitor).call(this, null, options));

        _this.rootPattern = rootPattern;
        _this.callback = callback;
        _this.assignments = [];
        _this.rightHandNodes = [];
        _this.restElements = [];
        return _this;
    }

    _createClass(PatternVisitor, [{
        key: 'Identifier',
        value: function Identifier(pattern) {
            var lastRestElement = getLast(this.restElements);
            this.callback(pattern, {
                topLevel: pattern === this.rootPattern,
                rest: lastRestElement != null && lastRestElement.argument === pattern,
                assignments: this.assignments
            });
        }
    }, {
        key: 'Property',
        value: function Property(property) {
            // Computed property's key is a right hand node.
            if (property.computed) {
                this.rightHandNodes.push(property.key);
            }

            // If it's shorthand, its key is same as its value.
            // If it's shorthand and has its default value, its key is same as its value.left (the value is AssignmentPattern).
            // If it's not shorthand, the name of new variable is its value's.
            this.visit(property.value);
        }
    }, {
        key: 'ArrayPattern',
        value: function ArrayPattern(pattern) {
            var i, iz, element;
            for (i = 0, iz = pattern.elements.length; i < iz; ++i) {
                element = pattern.elements[i];
                this.visit(element);
            }
        }
    }, {
        key: 'AssignmentPattern',
        value: function AssignmentPattern(pattern) {
            this.assignments.push(pattern);
            this.visit(pattern.left);
            this.rightHandNodes.push(pattern.right);
            this.assignments.pop();
        }
    }, {
        key: 'RestElement',
        value: function RestElement(pattern) {
            this.restElements.push(pattern);
            this.visit(pattern.argument);
            this.restElements.pop();
        }
    }, {
        key: 'MemberExpression',
        value: function MemberExpression(node) {
            // Computed property's key is a right hand node.
            if (node.computed) {
                this.rightHandNodes.push(node.property);
            }
            // the object is only read, write to its property.
            this.rightHandNodes.push(node.object);
        }

        //
        // ForInStatement.left and AssignmentExpression.left are LeftHandSideExpression.
        // By spec, LeftHandSideExpression is Pattern or MemberExpression.
        //   (see also: https://github.com/estree/estree/pull/20#issuecomment-74584758)
        // But espree 2.0 and esprima 2.0 parse to ArrayExpression, ObjectExpression, etc...
        //

    }, {
        key: 'SpreadElement',
        value: function SpreadElement(node) {
            this.visit(node.argument);
        }
    }, {
        key: 'ArrayExpression',
        value: function ArrayExpression(node) {
            node.elements.forEach(this.visit, this);
        }
    }, {
        key: 'AssignmentExpression',
        value: function AssignmentExpression(node) {
            this.assignments.push(node);
            this.visit(node.left);
            this.rightHandNodes.push(node.right);
            this.assignments.pop();
        }
    }, {
        key: 'CallExpression',
        value: function CallExpression(node) {
            var _this2 = this;

            // arguments are right hand nodes.
            node.arguments.forEach(function (a) {
                _this2.rightHandNodes.push(a);
            });
            this.visit(node.callee);
        }
    }]);

    return PatternVisitor;
}(_esrecurse2.default.Visitor);

/* vim: set sw=4 ts=4 et tw=80 : */


exports.default = PatternVisitor;


},{"esrecurse":123,"estraverse":129}],117:[function(require,module,exports){
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

/*
  Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

var READ = 0x1;
var WRITE = 0x2;
var RW = READ | WRITE;

/**
 * A Reference represents a single occurrence of an identifier in code.
 * @class Reference
 */

var Reference = function () {
  function Reference(ident, scope, flag, writeExpr, maybeImplicitGlobal, partial, init) {
    _classCallCheck(this, Reference);

    /**
     * Identifier syntax node.
     * @member {esprima#Identifier} Reference#identifier
     */
    this.identifier = ident;
    /**
     * Reference to the enclosing Scope.
     * @member {Scope} Reference#from
     */
    this.from = scope;
    /**
     * Whether the reference comes from a dynamic scope (such as 'eval',
     * 'with', etc.), and may be trapped by dynamic scopes.
     * @member {boolean} Reference#tainted
     */
    this.tainted = false;
    /**
     * The variable this reference is resolved with.
     * @member {Variable} Reference#resolved
     */
    this.resolved = null;
    /**
     * The read-write mode of the reference. (Value is one of {@link
     * Reference.READ}, {@link Reference.RW}, {@link Reference.WRITE}).
     * @member {number} Reference#flag
     * @private
     */
    this.flag = flag;
    if (this.isWrite()) {
      /**
       * If reference is writeable, this is the tree being written to it.
       * @member {esprima#Node} Reference#writeExpr
       */
      this.writeExpr = writeExpr;
      /**
       * Whether the Reference might refer to a partial value of writeExpr.
       * @member {boolean} Reference#partial
       */
      this.partial = partial;
      /**
       * Whether the Reference is to write of initialization.
       * @member {boolean} Reference#init
       */
      this.init = init;
    }
    this.__maybeImplicitGlobal = maybeImplicitGlobal;
  }

  /**
   * Whether the reference is static.
   * @method Reference#isStatic
   * @return {boolean}
   */


  _createClass(Reference, [{
    key: "isStatic",
    value: function isStatic() {
      return !this.tainted && this.resolved && this.resolved.scope.isStatic();
    }

    /**
     * Whether the reference is writeable.
     * @method Reference#isWrite
     * @return {boolean}
     */

  }, {
    key: "isWrite",
    value: function isWrite() {
      return !!(this.flag & Reference.WRITE);
    }

    /**
     * Whether the reference is readable.
     * @method Reference#isRead
     * @return {boolean}
     */

  }, {
    key: "isRead",
    value: function isRead() {
      return !!(this.flag & Reference.READ);
    }

    /**
     * Whether the reference is read-only.
     * @method Reference#isReadOnly
     * @return {boolean}
     */

  }, {
    key: "isReadOnly",
    value: function isReadOnly() {
      return this.flag === Reference.READ;
    }

    /**
     * Whether the reference is write-only.
     * @method Reference#isWriteOnly
     * @return {boolean}
     */

  }, {
    key: "isWriteOnly",
    value: function isWriteOnly() {
      return this.flag === Reference.WRITE;
    }

    /**
     * Whether the reference is read-write.
     * @method Reference#isReadWrite
     * @return {boolean}
     */

  }, {
    key: "isReadWrite",
    value: function isReadWrite() {
      return this.flag === Reference.RW;
    }
  }]);

  return Reference;
}();

/**
 * @constant Reference.READ
 * @private
 */


exports.default = Reference;
Reference.READ = READ;
/**
 * @constant Reference.WRITE
 * @private
 */
Reference.WRITE = WRITE;
/**
 * @constant Reference.RW
 * @private
 */
Reference.RW = RW;

/* vim: set sw=4 ts=4 et tw=80 : */


},{}],118:[function(require,module,exports){
'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _estraverse = require('estraverse');

var _esrecurse = require('esrecurse');

var _esrecurse2 = _interopRequireDefault(_esrecurse);

var _reference = require('./reference');

var _reference2 = _interopRequireDefault(_reference);

var _variable = require('./variable');

var _variable2 = _interopRequireDefault(_variable);

var _patternVisitor = require('./pattern-visitor');

var _patternVisitor2 = _interopRequireDefault(_patternVisitor);

var _definition = require('./definition');

var _assert = require('assert');

var _assert2 = _interopRequireDefault(_assert);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Redistribution and use in source and binary forms, with or without
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 modification, are permitted provided that the following conditions are met:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   * Redistributions of source code must retain the above copyright
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     notice, this list of conditions and the following disclaimer.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   * Redistributions in binary form must reproduce the above copyright
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     notice, this list of conditions and the following disclaimer in the
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     documentation and/or other materials provided with the distribution.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               */


function traverseIdentifierInPattern(options, rootPattern, referencer, callback) {
    // Call the callback at left hand identifier nodes, and Collect right hand nodes.
    var visitor = new _patternVisitor2.default(options, rootPattern, callback);
    visitor.visit(rootPattern);

    // Process the right hand nodes recursively.
    if (referencer != null) {
        visitor.rightHandNodes.forEach(referencer.visit, referencer);
    }
}

// Importing ImportDeclaration.
// http://people.mozilla.org/~jorendorff/es6-draft.html#sec-moduledeclarationinstantiation
// https://github.com/estree/estree/blob/master/es6.md#importdeclaration
// FIXME: Now, we don't create module environment, because the context is
// implementation dependent.

var Importer = function (_esrecurse$Visitor) {
    _inherits(Importer, _esrecurse$Visitor);

    function Importer(declaration, referencer) {
        _classCallCheck(this, Importer);

        var _this = _possibleConstructorReturn(this, Object.getPrototypeOf(Importer).call(this, null, referencer.options));

        _this.declaration = declaration;
        _this.referencer = referencer;
        return _this;
    }

    _createClass(Importer, [{
        key: 'visitImport',
        value: function visitImport(id, specifier) {
            var _this2 = this;

            this.referencer.visitPattern(id, function (pattern) {
                _this2.referencer.currentScope().__define(pattern, new _definition.Definition(_variable2.default.ImportBinding, pattern, specifier, _this2.declaration, null, null));
            });
        }
    }, {
        key: 'ImportNamespaceSpecifier',
        value: function ImportNamespaceSpecifier(node) {
            var local = node.local || node.id;
            if (local) {
                this.visitImport(local, node);
            }
        }
    }, {
        key: 'ImportDefaultSpecifier',
        value: function ImportDefaultSpecifier(node) {
            var local = node.local || node.id;
            this.visitImport(local, node);
        }
    }, {
        key: 'ImportSpecifier',
        value: function ImportSpecifier(node) {
            var local = node.local || node.id;
            if (node.name) {
                this.visitImport(node.name, node);
            } else {
                this.visitImport(local, node);
            }
        }
    }]);

    return Importer;
}(_esrecurse2.default.Visitor);

// Referencing variables and creating bindings.


var Referencer = function (_esrecurse$Visitor2) {
    _inherits(Referencer, _esrecurse$Visitor2);

    function Referencer(options, scopeManager) {
        _classCallCheck(this, Referencer);

        var _this3 = _possibleConstructorReturn(this, Object.getPrototypeOf(Referencer).call(this, null, options));

        _this3.options = options;
        _this3.scopeManager = scopeManager;
        _this3.parent = null;
        _this3.isInnerMethodDefinition = false;
        return _this3;
    }

    _createClass(Referencer, [{
        key: 'currentScope',
        value: function currentScope() {
            return this.scopeManager.__currentScope;
        }
    }, {
        key: 'close',
        value: function close(node) {
            while (this.currentScope() && node === this.currentScope().block) {
                this.scopeManager.__currentScope = this.currentScope().__close(this.scopeManager);
            }
        }
    }, {
        key: 'pushInnerMethodDefinition',
        value: function pushInnerMethodDefinition(isInnerMethodDefinition) {
            var previous = this.isInnerMethodDefinition;
            this.isInnerMethodDefinition = isInnerMethodDefinition;
            return previous;
        }
    }, {
        key: 'popInnerMethodDefinition',
        value: function popInnerMethodDefinition(isInnerMethodDefinition) {
            this.isInnerMethodDefinition = isInnerMethodDefinition;
        }
    }, {
        key: 'materializeTDZScope',
        value: function materializeTDZScope(node, iterationNode) {
            // http://people.mozilla.org/~jorendorff/es6-draft.html#sec-runtime-semantics-forin-div-ofexpressionevaluation-abstract-operation
            // TDZ scope hides the declaration's names.
            this.scopeManager.__nestTDZScope(node, iterationNode);
            this.visitVariableDeclaration(this.currentScope(), _variable2.default.TDZ, iterationNode.left, 0, true);
        }
    }, {
        key: 'materializeIterationScope',
        value: function materializeIterationScope(node) {
            var _this4 = this;

            // Generate iteration scope for upper ForIn/ForOf Statements.
            var letOrConstDecl;
            this.scopeManager.__nestForScope(node);
            letOrConstDecl = node.left;
            this.visitVariableDeclaration(this.currentScope(), _variable2.default.Variable, letOrConstDecl, 0);
            this.visitPattern(letOrConstDecl.declarations[0].id, function (pattern) {
                _this4.currentScope().__referencing(pattern, _reference2.default.WRITE, node.right, null, true, true);
            });
        }
    }, {
        key: 'referencingDefaultValue',
        value: function referencingDefaultValue(pattern, assignments, maybeImplicitGlobal, init) {
            var scope = this.currentScope();
            assignments.forEach(function (assignment) {
                scope.__referencing(pattern, _reference2.default.WRITE, assignment.right, maybeImplicitGlobal, pattern !== assignment.left, init);
            });
        }
    }, {
        key: 'visitPattern',
        value: function visitPattern(node, options, callback) {
            if (typeof options === 'function') {
                callback = options;
                options = { processRightHandNodes: false };
            }
            traverseIdentifierInPattern(this.options, node, options.processRightHandNodes ? this : null, callback);
        }
    }, {
        key: 'visitFunction',
        value: function visitFunction(node) {
            var _this5 = this;

            var i, iz;
            // FunctionDeclaration name is defined in upper scope
            // NOTE: Not referring variableScope. It is intended.
            // Since
            //  in ES5, FunctionDeclaration should be in FunctionBody.
            //  in ES6, FunctionDeclaration should be block scoped.
            if (node.type === _estraverse.Syntax.FunctionDeclaration) {
                // id is defined in upper scope
                this.currentScope().__define(node.id, new _definition.Definition(_variable2.default.FunctionName, node.id, node, null, null, null));
            }

            // FunctionExpression with name creates its special scope;
            // FunctionExpressionNameScope.
            if (node.type === _estraverse.Syntax.FunctionExpression && node.id) {
                this.scopeManager.__nestFunctionExpressionNameScope(node);
            }

            // Consider this function is in the MethodDefinition.
            this.scopeManager.__nestFunctionScope(node, this.isInnerMethodDefinition);

            // Process parameter declarations.
            for (i = 0, iz = node.params.length; i < iz; ++i) {
                this.visitPattern(node.params[i], { processRightHandNodes: true }, function (pattern, info) {
                    _this5.currentScope().__define(pattern, new _definition.ParameterDefinition(pattern, node, i, info.rest));

                    _this5.referencingDefaultValue(pattern, info.assignments, null, true);
                });
            }

            // if there's a rest argument, add that
            if (node.rest) {
                this.visitPattern({
                    type: 'RestElement',
                    argument: node.rest
                }, function (pattern) {
                    _this5.currentScope().__define(pattern, new _definition.ParameterDefinition(pattern, node, node.params.length, true));
                });
            }

            // Skip BlockStatement to prevent creating BlockStatement scope.
            if (node.body.type === _estraverse.Syntax.BlockStatement) {
                this.visitChildren(node.body);
            } else {
                this.visit(node.body);
            }

            this.close(node);
        }
    }, {
        key: 'visitClass',
        value: function visitClass(node) {
            if (node.type === _estraverse.Syntax.ClassDeclaration) {
                this.currentScope().__define(node.id, new _definition.Definition(_variable2.default.ClassName, node.id, node, null, null, null));
            }

            // FIXME: Maybe consider TDZ.
            this.visit(node.superClass);

            this.scopeManager.__nestClassScope(node);

            if (node.id) {
                this.currentScope().__define(node.id, new _definition.Definition(_variable2.default.ClassName, node.id, node));
            }
            this.visit(node.body);

            this.close(node);
        }
    }, {
        key: 'visitProperty',
        value: function visitProperty(node) {
            var previous, isMethodDefinition;
            if (node.computed) {
                this.visit(node.key);
            }

            isMethodDefinition = node.type === _estraverse.Syntax.MethodDefinition;
            if (isMethodDefinition) {
                previous = this.pushInnerMethodDefinition(true);
            }
            this.visit(node.value);
            if (isMethodDefinition) {
                this.popInnerMethodDefinition(previous);
            }
        }
    }, {
        key: 'visitForIn',
        value: function visitForIn(node) {
            var _this6 = this;

            if (node.left.type === _estraverse.Syntax.VariableDeclaration && node.left.kind !== 'var') {
                this.materializeTDZScope(node.right, node);
                this.visit(node.right);
                this.close(node.right);

                this.materializeIterationScope(node);
                this.visit(node.body);
                this.close(node);
            } else {
                if (node.left.type === _estraverse.Syntax.VariableDeclaration) {
                    this.visit(node.left);
                    this.visitPattern(node.left.declarations[0].id, function (pattern) {
                        _this6.currentScope().__referencing(pattern, _reference2.default.WRITE, node.right, null, true, true);
                    });
                } else {
                    this.visitPattern(node.left, { processRightHandNodes: true }, function (pattern, info) {
                        var maybeImplicitGlobal = null;
                        if (!_this6.currentScope().isStrict) {
                            maybeImplicitGlobal = {
                                pattern: pattern,
                                node: node
                            };
                        }
                        _this6.referencingDefaultValue(pattern, info.assignments, maybeImplicitGlobal, false);
                        _this6.currentScope().__referencing(pattern, _reference2.default.WRITE, node.right, maybeImplicitGlobal, true, false);
                    });
                }
                this.visit(node.right);
                this.visit(node.body);
            }
        }
    }, {
        key: 'visitVariableDeclaration',
        value: function visitVariableDeclaration(variableTargetScope, type, node, index, fromTDZ) {
            var _this7 = this;

            // If this was called to initialize a TDZ scope, this needs to make definitions, but doesn't make references.
            var decl, init;

            decl = node.declarations[index];
            init = decl.init;
            this.visitPattern(decl.id, { processRightHandNodes: !fromTDZ }, function (pattern, info) {
                variableTargetScope.__define(pattern, new _definition.Definition(type, pattern, decl, node, index, node.kind));

                if (!fromTDZ) {
                    _this7.referencingDefaultValue(pattern, info.assignments, null, true);
                }
                if (init) {
                    _this7.currentScope().__referencing(pattern, _reference2.default.WRITE, init, null, !info.topLevel, true);
                }
            });
        }
    }, {
        key: 'AssignmentExpression',
        value: function AssignmentExpression(node) {
            var _this8 = this;

            if (_patternVisitor2.default.isPattern(node.left)) {
                if (node.operator === '=') {
                    this.visitPattern(node.left, { processRightHandNodes: true }, function (pattern, info) {
                        var maybeImplicitGlobal = null;
                        if (!_this8.currentScope().isStrict) {
                            maybeImplicitGlobal = {
                                pattern: pattern,
                                node: node
                            };
                        }
                        _this8.referencingDefaultValue(pattern, info.assignments, maybeImplicitGlobal, false);
                        _this8.currentScope().__referencing(pattern, _reference2.default.WRITE, node.right, maybeImplicitGlobal, !info.topLevel, false);
                    });
                } else {
                    this.currentScope().__referencing(node.left, _reference2.default.RW, node.right);
                }
            } else {
                this.visit(node.left);
            }
            this.visit(node.right);
        }
    }, {
        key: 'CatchClause',
        value: function CatchClause(node) {
            var _this9 = this;

            this.scopeManager.__nestCatchScope(node);

            this.visitPattern(node.param, { processRightHandNodes: true }, function (pattern, info) {
                _this9.currentScope().__define(pattern, new _definition.Definition(_variable2.default.CatchClause, node.param, node, null, null, null));
                _this9.referencingDefaultValue(pattern, info.assignments, null, true);
            });
            this.visit(node.body);

            this.close(node);
        }
    }, {
        key: 'Program',
        value: function Program(node) {
            this.scopeManager.__nestGlobalScope(node);

            if (this.scopeManager.__isNodejsScope()) {
                // Force strictness of GlobalScope to false when using node.js scope.
                this.currentScope().isStrict = false;
                this.scopeManager.__nestFunctionScope(node, false);
            }

            if (this.scopeManager.__isES6() && this.scopeManager.isModule()) {
                this.scopeManager.__nestModuleScope(node);
            }

            if (this.scopeManager.isStrictModeSupported() && this.scopeManager.isImpliedStrict()) {
                this.currentScope().isStrict = true;
            }

            this.visitChildren(node);
            this.close(node);
        }
    }, {
        key: 'Identifier',
        value: function Identifier(node) {
            this.currentScope().__referencing(node);
        }
    }, {
        key: 'UpdateExpression',
        value: function UpdateExpression(node) {
            if (_patternVisitor2.default.isPattern(node.argument)) {
                this.currentScope().__referencing(node.argument, _reference2.default.RW, null);
            } else {
                this.visitChildren(node);
            }
        }
    }, {
        key: 'MemberExpression',
        value: function MemberExpression(node) {
            this.visit(node.object);
            if (node.computed) {
                this.visit(node.property);
            }
        }
    }, {
        key: 'Property',
        value: function Property(node) {
            this.visitProperty(node);
        }
    }, {
        key: 'MethodDefinition',
        value: function MethodDefinition(node) {
            this.visitProperty(node);
        }
    }, {
        key: 'BreakStatement',
        value: function BreakStatement() {}
    }, {
        key: 'ContinueStatement',
        value: function ContinueStatement() {}
    }, {
        key: 'LabeledStatement',
        value: function LabeledStatement(node) {
            this.visit(node.body);
        }
    }, {
        key: 'ForStatement',
        value: function ForStatement(node) {
            // Create ForStatement declaration.
            // NOTE: In ES6, ForStatement dynamically generates
            // per iteration environment. However, escope is
            // a static analyzer, we only generate one scope for ForStatement.
            if (node.init && node.init.type === _estraverse.Syntax.VariableDeclaration && node.init.kind !== 'var') {
                this.scopeManager.__nestForScope(node);
            }

            this.visitChildren(node);

            this.close(node);
        }
    }, {
        key: 'ClassExpression',
        value: function ClassExpression(node) {
            this.visitClass(node);
        }
    }, {
        key: 'ClassDeclaration',
        value: function ClassDeclaration(node) {
            this.visitClass(node);
        }
    }, {
        key: 'CallExpression',
        value: function CallExpression(node) {
            // Check this is direct call to eval
            if (!this.scopeManager.__ignoreEval() && node.callee.type === _estraverse.Syntax.Identifier && node.callee.name === 'eval') {
                // NOTE: This should be `variableScope`. Since direct eval call always creates Lexical environment and
                // let / const should be enclosed into it. Only VariableDeclaration affects on the caller's environment.
                this.currentScope().variableScope.__detectEval();
            }
            this.visitChildren(node);
        }
    }, {
        key: 'BlockStatement',
        value: function BlockStatement(node) {
            if (this.scopeManager.__isES6()) {
                this.scopeManager.__nestBlockScope(node);
            }

            this.visitChildren(node);

            this.close(node);
        }
    }, {
        key: 'ThisExpression',
        value: function ThisExpression() {
            this.currentScope().variableScope.__detectThis();
        }
    }, {
        key: 'WithStatement',
        value: function WithStatement(node) {
            this.visit(node.object);
            // Then nest scope for WithStatement.
            this.scopeManager.__nestWithScope(node);

            this.visit(node.body);

            this.close(node);
        }
    }, {
        key: 'VariableDeclaration',
        value: function VariableDeclaration(node) {
            var variableTargetScope, i, iz, decl;
            variableTargetScope = node.kind === 'var' ? this.currentScope().variableScope : this.currentScope();
            for (i = 0, iz = node.declarations.length; i < iz; ++i) {
                decl = node.declarations[i];
                this.visitVariableDeclaration(variableTargetScope, _variable2.default.Variable, node, i);
                if (decl.init) {
                    this.visit(decl.init);
                }
            }
        }

        // sec 13.11.8

    }, {
        key: 'SwitchStatement',
        value: function SwitchStatement(node) {
            var i, iz;

            this.visit(node.discriminant);

            if (this.scopeManager.__isES6()) {
                this.scopeManager.__nestSwitchScope(node);
            }

            for (i = 0, iz = node.cases.length; i < iz; ++i) {
                this.visit(node.cases[i]);
            }

            this.close(node);
        }
    }, {
        key: 'FunctionDeclaration',
        value: function FunctionDeclaration(node) {
            this.visitFunction(node);
        }
    }, {
        key: 'FunctionExpression',
        value: function FunctionExpression(node) {
            this.visitFunction(node);
        }
    }, {
        key: 'ForOfStatement',
        value: function ForOfStatement(node) {
            this.visitForIn(node);
        }
    }, {
        key: 'ForInStatement',
        value: function ForInStatement(node) {
            this.visitForIn(node);
        }
    }, {
        key: 'ArrowFunctionExpression',
        value: function ArrowFunctionExpression(node) {
            this.visitFunction(node);
        }
    }, {
        key: 'ImportDeclaration',
        value: function ImportDeclaration(node) {
            var importer;

            (0, _assert2.default)(this.scopeManager.__isES6() && this.scopeManager.isModule(), 'ImportDeclaration should appear when the mode is ES6 and in the module context.');

            importer = new Importer(node, this);
            importer.visit(node);
        }
    }, {
        key: 'visitExportDeclaration',
        value: function visitExportDeclaration(node) {
            if (node.source) {
                return;
            }
            if (node.declaration) {
                this.visit(node.declaration);
                return;
            }

            this.visitChildren(node);
        }
    }, {
        key: 'ExportDeclaration',
        value: function ExportDeclaration(node) {
            this.visitExportDeclaration(node);
        }
    }, {
        key: 'ExportNamedDeclaration',
        value: function ExportNamedDeclaration(node) {
            this.visitExportDeclaration(node);
        }
    }, {
        key: 'ExportSpecifier',
        value: function ExportSpecifier(node) {
            var local = node.id || node.local;
            this.visit(local);
        }
    }, {
        key: 'MetaProperty',
        value: function MetaProperty() {
            // do nothing.
        }
    }]);

    return Referencer;
}(_esrecurse2.default.Visitor);

/* vim: set sw=4 ts=4 et tw=80 : */


exports.default = Referencer;


},{"./definition":114,"./pattern-visitor":116,"./reference":117,"./variable":121,"assert":40,"esrecurse":123,"estraverse":129}],119:[function(require,module,exports){
'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /*
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Redistribution and use in source and binary forms, with or without
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       modification, are permitted provided that the following conditions are met:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         * Redistributions of source code must retain the above copyright
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           notice, this list of conditions and the following disclaimer.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         * Redistributions in binary form must reproduce the above copyright
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           notice, this list of conditions and the following disclaimer in the
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           documentation and/or other materials provided with the distribution.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     */

var _es6WeakMap = require('es6-weak-map');

var _es6WeakMap2 = _interopRequireDefault(_es6WeakMap);

var _scope = require('./scope');

var _scope2 = _interopRequireDefault(_scope);

var _assert = require('assert');

var _assert2 = _interopRequireDefault(_assert);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

/**
 * @class ScopeManager
 */

var ScopeManager = function () {
    function ScopeManager(options) {
        _classCallCheck(this, ScopeManager);

        this.scopes = [];
        this.globalScope = null;
        this.__nodeToScope = new _es6WeakMap2.default();
        this.__currentScope = null;
        this.__options = options;
        this.__declaredVariables = new _es6WeakMap2.default();
    }

    _createClass(ScopeManager, [{
        key: '__useDirective',
        value: function __useDirective() {
            return this.__options.directive;
        }
    }, {
        key: '__isOptimistic',
        value: function __isOptimistic() {
            return this.__options.optimistic;
        }
    }, {
        key: '__ignoreEval',
        value: function __ignoreEval() {
            return this.__options.ignoreEval;
        }
    }, {
        key: '__isNodejsScope',
        value: function __isNodejsScope() {
            return this.__options.nodejsScope;
        }
    }, {
        key: 'isModule',
        value: function isModule() {
            return this.__options.sourceType === 'module';
        }
    }, {
        key: 'isImpliedStrict',
        value: function isImpliedStrict() {
            return this.__options.impliedStrict;
        }
    }, {
        key: 'isStrictModeSupported',
        value: function isStrictModeSupported() {
            return this.__options.ecmaVersion >= 5;
        }

        // Returns appropriate scope for this node.

    }, {
        key: '__get',
        value: function __get(node) {
            return this.__nodeToScope.get(node);
        }

        /**
         * Get variables that are declared by the node.
         *
         * "are declared by the node" means the node is same as `Variable.defs[].node` or `Variable.defs[].parent`.
         * If the node declares nothing, this method returns an empty array.
         * CAUTION: This API is experimental. See https://github.com/estools/escope/pull/69 for more details.
         *
         * @param {Esprima.Node} node - a node to get.
         * @returns {Variable[]} variables that declared by the node.
         */

    }, {
        key: 'getDeclaredVariables',
        value: function getDeclaredVariables(node) {
            return this.__declaredVariables.get(node) || [];
        }

        /**
         * acquire scope from node.
         * @method ScopeManager#acquire
         * @param {Esprima.Node} node - node for the acquired scope.
         * @param {boolean=} inner - look up the most inner scope, default value is false.
         * @return {Scope?}
         */

    }, {
        key: 'acquire',
        value: function acquire(node, inner) {
            var scopes, scope, i, iz;

            function predicate(scope) {
                if (scope.type === 'function' && scope.functionExpressionScope) {
                    return false;
                }
                if (scope.type === 'TDZ') {
                    return false;
                }
                return true;
            }

            scopes = this.__get(node);
            if (!scopes || scopes.length === 0) {
                return null;
            }

            // Heuristic selection from all scopes.
            // If you would like to get all scopes, please use ScopeManager#acquireAll.
            if (scopes.length === 1) {
                return scopes[0];
            }

            if (inner) {
                for (i = scopes.length - 1; i >= 0; --i) {
                    scope = scopes[i];
                    if (predicate(scope)) {
                        return scope;
                    }
                }
            } else {
                for (i = 0, iz = scopes.length; i < iz; ++i) {
                    scope = scopes[i];
                    if (predicate(scope)) {
                        return scope;
                    }
                }
            }

            return null;
        }

        /**
         * acquire all scopes from node.
         * @method ScopeManager#acquireAll
         * @param {Esprima.Node} node - node for the acquired scope.
         * @return {Scope[]?}
         */

    }, {
        key: 'acquireAll',
        value: function acquireAll(node) {
            return this.__get(node);
        }

        /**
         * release the node.
         * @method ScopeManager#release
         * @param {Esprima.Node} node - releasing node.
         * @param {boolean=} inner - look up the most inner scope, default value is false.
         * @return {Scope?} upper scope for the node.
         */

    }, {
        key: 'release',
        value: function release(node, inner) {
            var scopes, scope;
            scopes = this.__get(node);
            if (scopes && scopes.length) {
                scope = scopes[0].upper;
                if (!scope) {
                    return null;
                }
                return this.acquire(scope.block, inner);
            }
            return null;
        }
    }, {
        key: 'attach',
        value: function attach() {}
    }, {
        key: 'detach',
        value: function detach() {}
    }, {
        key: '__nestScope',
        value: function __nestScope(scope) {
            if (scope instanceof _scope.GlobalScope) {
                (0, _assert2.default)(this.__currentScope === null);
                this.globalScope = scope;
            }
            this.__currentScope = scope;
            return scope;
        }
    }, {
        key: '__nestGlobalScope',
        value: function __nestGlobalScope(node) {
            return this.__nestScope(new _scope.GlobalScope(this, node));
        }
    }, {
        key: '__nestBlockScope',
        value: function __nestBlockScope(node, isMethodDefinition) {
            return this.__nestScope(new _scope.BlockScope(this, this.__currentScope, node));
        }
    }, {
        key: '__nestFunctionScope',
        value: function __nestFunctionScope(node, isMethodDefinition) {
            return this.__nestScope(new _scope.FunctionScope(this, this.__currentScope, node, isMethodDefinition));
        }
    }, {
        key: '__nestForScope',
        value: function __nestForScope(node) {
            return this.__nestScope(new _scope.ForScope(this, this.__currentScope, node));
        }
    }, {
        key: '__nestCatchScope',
        value: function __nestCatchScope(node) {
            return this.__nestScope(new _scope.CatchScope(this, this.__currentScope, node));
        }
    }, {
        key: '__nestWithScope',
        value: function __nestWithScope(node) {
            return this.__nestScope(new _scope.WithScope(this, this.__currentScope, node));
        }
    }, {
        key: '__nestClassScope',
        value: function __nestClassScope(node) {
            return this.__nestScope(new _scope.ClassScope(this, this.__currentScope, node));
        }
    }, {
        key: '__nestSwitchScope',
        value: function __nestSwitchScope(node) {
            return this.__nestScope(new _scope.SwitchScope(this, this.__currentScope, node));
        }
    }, {
        key: '__nestModuleScope',
        value: function __nestModuleScope(node) {
            return this.__nestScope(new _scope.ModuleScope(this, this.__currentScope, node));
        }
    }, {
        key: '__nestTDZScope',
        value: function __nestTDZScope(node) {
            return this.__nestScope(new _scope.TDZScope(this, this.__currentScope, node));
        }
    }, {
        key: '__nestFunctionExpressionNameScope',
        value: function __nestFunctionExpressionNameScope(node) {
            return this.__nestScope(new _scope.FunctionExpressionNameScope(this, this.__currentScope, node));
        }
    }, {
        key: '__isES6',
        value: function __isES6() {
            return this.__options.ecmaVersion >= 6;
        }
    }]);

    return ScopeManager;
}();

/* vim: set sw=4 ts=4 et tw=80 : */


exports.default = ScopeManager;


},{"./scope":120,"assert":40,"es6-weak-map":110}],120:[function(require,module,exports){
'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.ClassScope = exports.ForScope = exports.FunctionScope = exports.SwitchScope = exports.BlockScope = exports.TDZScope = exports.WithScope = exports.CatchScope = exports.FunctionExpressionNameScope = exports.ModuleScope = exports.GlobalScope = undefined;

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /*
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Redistribution and use in source and binary forms, with or without
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       modification, are permitted provided that the following conditions are met:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         * Redistributions of source code must retain the above copyright
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           notice, this list of conditions and the following disclaimer.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         * Redistributions in binary form must reproduce the above copyright
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           notice, this list of conditions and the following disclaimer in the
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           documentation and/or other materials provided with the distribution.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     */

var _estraverse = require('estraverse');

var _es6Map = require('es6-map');

var _es6Map2 = _interopRequireDefault(_es6Map);

var _reference = require('./reference');

var _reference2 = _interopRequireDefault(_reference);

var _variable = require('./variable');

var _variable2 = _interopRequireDefault(_variable);

var _definition = require('./definition');

var _definition2 = _interopRequireDefault(_definition);

var _assert = require('assert');

var _assert2 = _interopRequireDefault(_assert);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function isStrictScope(scope, block, isMethodDefinition, useDirective) {
    var body, i, iz, stmt, expr;

    // When upper scope is exists and strict, inner scope is also strict.
    if (scope.upper && scope.upper.isStrict) {
        return true;
    }

    // ArrowFunctionExpression's scope is always strict scope.
    if (block.type === _estraverse.Syntax.ArrowFunctionExpression) {
        return true;
    }

    if (isMethodDefinition) {
        return true;
    }

    if (scope.type === 'class' || scope.type === 'module') {
        return true;
    }

    if (scope.type === 'block' || scope.type === 'switch') {
        return false;
    }

    if (scope.type === 'function') {
        if (block.type === _estraverse.Syntax.Program) {
            body = block;
        } else {
            body = block.body;
        }
    } else if (scope.type === 'global') {
        body = block;
    } else {
        return false;
    }

    // Search 'use strict' directive.
    if (useDirective) {
        for (i = 0, iz = body.body.length; i < iz; ++i) {
            stmt = body.body[i];
            if (stmt.type !== _estraverse.Syntax.DirectiveStatement) {
                break;
            }
            if (stmt.raw === '"use strict"' || stmt.raw === '\'use strict\'') {
                return true;
            }
        }
    } else {
        for (i = 0, iz = body.body.length; i < iz; ++i) {
            stmt = body.body[i];
            if (stmt.type !== _estraverse.Syntax.ExpressionStatement) {
                break;
            }
            expr = stmt.expression;
            if (expr.type !== _estraverse.Syntax.Literal || typeof expr.value !== 'string') {
                break;
            }
            if (expr.raw != null) {
                if (expr.raw === '"use strict"' || expr.raw === '\'use strict\'') {
                    return true;
                }
            } else {
                if (expr.value === 'use strict') {
                    return true;
                }
            }
        }
    }
    return false;
}

function registerScope(scopeManager, scope) {
    var scopes;

    scopeManager.scopes.push(scope);

    scopes = scopeManager.__nodeToScope.get(scope.block);
    if (scopes) {
        scopes.push(scope);
    } else {
        scopeManager.__nodeToScope.set(scope.block, [scope]);
    }
}

function shouldBeStatically(def) {
    return def.type === _variable2.default.ClassName || def.type === _variable2.default.Variable && def.parent.kind !== 'var';
}

/**
 * @class Scope
 */

var Scope = function () {
    function Scope(scopeManager, type, upperScope, block, isMethodDefinition) {
        _classCallCheck(this, Scope);

        /**
         * One of 'TDZ', 'module', 'block', 'switch', 'function', 'catch', 'with', 'function', 'class', 'global'.
         * @member {String} Scope#type
         */
        this.type = type;
        /**
        * The scoped {@link Variable}s of this scope, as <code>{ Variable.name
        * : Variable }</code>.
        * @member {Map} Scope#set
        */
        this.set = new _es6Map2.default();
        /**
         * The tainted variables of this scope, as <code>{ Variable.name :
         * boolean }</code>.
         * @member {Map} Scope#taints */
        this.taints = new _es6Map2.default();
        /**
         * Generally, through the lexical scoping of JS you can always know
         * which variable an identifier in the source code refers to. There are
         * a few exceptions to this rule. With 'global' and 'with' scopes you
         * can only decide at runtime which variable a reference refers to.
         * Moreover, if 'eval()' is used in a scope, it might introduce new
         * bindings in this or its parent scopes.
         * All those scopes are considered 'dynamic'.
         * @member {boolean} Scope#dynamic
         */
        this.dynamic = this.type === 'global' || this.type === 'with';
        /**
         * A reference to the scope-defining syntax node.
         * @member {esprima.Node} Scope#block
         */
        this.block = block;
        /**
        * The {@link Reference|references} that are not resolved with this scope.
        * @member {Reference[]} Scope#through
        */
        this.through = [];
        /**
        * The scoped {@link Variable}s of this scope. In the case of a
        * 'function' scope this includes the automatic argument <em>arguments</em> as
        * its first element, as well as all further formal arguments.
        * @member {Variable[]} Scope#variables
        */
        this.variables = [];
        /**
        * Any variable {@link Reference|reference} found in this scope. This
        * includes occurrences of local variables as well as variables from
        * parent scopes (including the global scope). For local variables
        * this also includes defining occurrences (like in a 'var' statement).
        * In a 'function' scope this does not include the occurrences of the
        * formal parameter in the parameter list.
        * @member {Reference[]} Scope#references
        */
        this.references = [];

        /**
        * For 'global' and 'function' scopes, this is a self-reference. For
        * other scope types this is the <em>variableScope</em> value of the
        * parent scope.
        * @member {Scope} Scope#variableScope
        */
        this.variableScope = this.type === 'global' || this.type === 'function' || this.type === 'module' ? this : upperScope.variableScope;
        /**
        * Whether this scope is created by a FunctionExpression.
        * @member {boolean} Scope#functionExpressionScope
        */
        this.functionExpressionScope = false;
        /**
        * Whether this is a scope that contains an 'eval()' invocation.
        * @member {boolean} Scope#directCallToEvalScope
        */
        this.directCallToEvalScope = false;
        /**
        * @member {boolean} Scope#thisFound
        */
        this.thisFound = false;

        this.__left = [];

        /**
        * Reference to the parent {@link Scope|scope}.
        * @member {Scope} Scope#upper
        */
        this.upper = upperScope;
        /**
        * Whether 'use strict' is in effect in this scope.
        * @member {boolean} Scope#isStrict
        */
        this.isStrict = isStrictScope(this, block, isMethodDefinition, scopeManager.__useDirective());

        /**
        * List of nested {@link Scope}s.
        * @member {Scope[]} Scope#childScopes
        */
        this.childScopes = [];
        if (this.upper) {
            this.upper.childScopes.push(this);
        }

        this.__declaredVariables = scopeManager.__declaredVariables;

        registerScope(scopeManager, this);
    }

    _createClass(Scope, [{
        key: '__shouldStaticallyClose',
        value: function __shouldStaticallyClose(scopeManager) {
            return !this.dynamic || scopeManager.__isOptimistic();
        }
    }, {
        key: '__shouldStaticallyCloseForGlobal',
        value: function __shouldStaticallyCloseForGlobal(ref) {
            // On global scope, let/const/class declarations should be resolved statically.
            var name = ref.identifier.name;
            if (!this.set.has(name)) {
                return false;
            }

            var variable = this.set.get(name);
            var defs = variable.defs;
            return defs.length > 0 && defs.every(shouldBeStatically);
        }
    }, {
        key: '__staticCloseRef',
        value: function __staticCloseRef(ref) {
            if (!this.__resolve(ref)) {
                this.__delegateToUpperScope(ref);
            }
        }
    }, {
        key: '__dynamicCloseRef',
        value: function __dynamicCloseRef(ref) {
            // notify all names are through to global
            var current = this;
            do {
                current.through.push(ref);
                current = current.upper;
            } while (current);
        }
    }, {
        key: '__globalCloseRef',
        value: function __globalCloseRef(ref) {
            // let/const/class declarations should be resolved statically.
            // others should be resolved dynamically.
            if (this.__shouldStaticallyCloseForGlobal(ref)) {
                this.__staticCloseRef(ref);
            } else {
                this.__dynamicCloseRef(ref);
            }
        }
    }, {
        key: '__close',
        value: function __close(scopeManager) {
            var closeRef;
            if (this.__shouldStaticallyClose(scopeManager)) {
                closeRef = this.__staticCloseRef;
            } else if (this.type !== 'global') {
                closeRef = this.__dynamicCloseRef;
            } else {
                closeRef = this.__globalCloseRef;
            }

            // Try Resolving all references in this scope.
            for (var i = 0, iz = this.__left.length; i < iz; ++i) {
                var ref = this.__left[i];
                closeRef.call(this, ref);
            }
            this.__left = null;

            return this.upper;
        }
    }, {
        key: '__resolve',
        value: function __resolve(ref) {
            var variable, name;
            name = ref.identifier.name;
            if (this.set.has(name)) {
                variable = this.set.get(name);
                variable.references.push(ref);
                variable.stack = variable.stack && ref.from.variableScope === this.variableScope;
                if (ref.tainted) {
                    variable.tainted = true;
                    this.taints.set(variable.name, true);
                }
                ref.resolved = variable;
                return true;
            }
            return false;
        }
    }, {
        key: '__delegateToUpperScope',
        value: function __delegateToUpperScope(ref) {
            if (this.upper) {
                this.upper.__left.push(ref);
            }
            this.through.push(ref);
        }
    }, {
        key: '__addDeclaredVariablesOfNode',
        value: function __addDeclaredVariablesOfNode(variable, node) {
            if (node == null) {
                return;
            }

            var variables = this.__declaredVariables.get(node);
            if (variables == null) {
                variables = [];
                this.__declaredVariables.set(node, variables);
            }
            if (variables.indexOf(variable) === -1) {
                variables.push(variable);
            }
        }
    }, {
        key: '__defineGeneric',
        value: function __defineGeneric(name, set, variables, node, def) {
            var variable;

            variable = set.get(name);
            if (!variable) {
                variable = new _variable2.default(name, this);
                set.set(name, variable);
                variables.push(variable);
            }

            if (def) {
                variable.defs.push(def);
                if (def.type !== _variable2.default.TDZ) {
                    this.__addDeclaredVariablesOfNode(variable, def.node);
                    this.__addDeclaredVariablesOfNode(variable, def.parent);
                }
            }
            if (node) {
                variable.identifiers.push(node);
            }
        }
    }, {
        key: '__define',
        value: function __define(node, def) {
            if (node && node.type === _estraverse.Syntax.Identifier) {
                this.__defineGeneric(node.name, this.set, this.variables, node, def);
            }
        }
    }, {
        key: '__referencing',
        value: function __referencing(node, assign, writeExpr, maybeImplicitGlobal, partial, init) {
            // because Array element may be null
            if (!node || node.type !== _estraverse.Syntax.Identifier) {
                return;
            }

            // Specially handle like `this`.
            if (node.name === 'super') {
                return;
            }

            var ref = new _reference2.default(node, this, assign || _reference2.default.READ, writeExpr, maybeImplicitGlobal, !!partial, !!init);
            this.references.push(ref);
            this.__left.push(ref);
        }
    }, {
        key: '__detectEval',
        value: function __detectEval() {
            var current;
            current = this;
            this.directCallToEvalScope = true;
            do {
                current.dynamic = true;
                current = current.upper;
            } while (current);
        }
    }, {
        key: '__detectThis',
        value: function __detectThis() {
            this.thisFound = true;
        }
    }, {
        key: '__isClosed',
        value: function __isClosed() {
            return this.__left === null;
        }

        /**
         * returns resolved {Reference}
         * @method Scope#resolve
         * @param {Esprima.Identifier} ident - identifier to be resolved.
         * @return {Reference}
         */

    }, {
        key: 'resolve',
        value: function resolve(ident) {
            var ref, i, iz;
            (0, _assert2.default)(this.__isClosed(), 'Scope should be closed.');
            (0, _assert2.default)(ident.type === _estraverse.Syntax.Identifier, 'Target should be identifier.');
            for (i = 0, iz = this.references.length; i < iz; ++i) {
                ref = this.references[i];
                if (ref.identifier === ident) {
                    return ref;
                }
            }
            return null;
        }

        /**
         * returns this scope is static
         * @method Scope#isStatic
         * @return {boolean}
         */

    }, {
        key: 'isStatic',
        value: function isStatic() {
            return !this.dynamic;
        }

        /**
         * returns this scope has materialized arguments
         * @method Scope#isArgumentsMaterialized
         * @return {boolean}
         */

    }, {
        key: 'isArgumentsMaterialized',
        value: function isArgumentsMaterialized() {
            return true;
        }

        /**
         * returns this scope has materialized `this` reference
         * @method Scope#isThisMaterialized
         * @return {boolean}
         */

    }, {
        key: 'isThisMaterialized',
        value: function isThisMaterialized() {
            return true;
        }
    }, {
        key: 'isUsedName',
        value: function isUsedName(name) {
            if (this.set.has(name)) {
                return true;
            }
            for (var i = 0, iz = this.through.length; i < iz; ++i) {
                if (this.through[i].identifier.name === name) {
                    return true;
                }
            }
            return false;
        }
    }]);

    return Scope;
}();

exports.default = Scope;

var GlobalScope = exports.GlobalScope = function (_Scope) {
    _inherits(GlobalScope, _Scope);

    function GlobalScope(scopeManager, block) {
        _classCallCheck(this, GlobalScope);

        var _this = _possibleConstructorReturn(this, Object.getPrototypeOf(GlobalScope).call(this, scopeManager, 'global', null, block, false));

        _this.implicit = {
            set: new _es6Map2.default(),
            variables: [],
            /**
            * List of {@link Reference}s that are left to be resolved (i.e. which
            * need to be linked to the variable they refer to).
            * @member {Reference[]} Scope#implicit#left
            */
            left: []
        };
        return _this;
    }

    _createClass(GlobalScope, [{
        key: '__close',
        value: function __close(scopeManager) {
            var implicit = [];
            for (var i = 0, iz = this.__left.length; i < iz; ++i) {
                var ref = this.__left[i];
                if (ref.__maybeImplicitGlobal && !this.set.has(ref.identifier.name)) {
                    implicit.push(ref.__maybeImplicitGlobal);
                }
            }

            // create an implicit global variable from assignment expression
            for (var _i = 0, _iz = implicit.length; _i < _iz; ++_i) {
                var info = implicit[_i];
                this.__defineImplicit(info.pattern, new _definition2.default(_variable2.default.ImplicitGlobalVariable, info.pattern, info.node, null, null, null));
            }

            this.implicit.left = this.__left;

            return _get(Object.getPrototypeOf(GlobalScope.prototype), '__close', this).call(this, scopeManager);
        }
    }, {
        key: '__defineImplicit',
        value: function __defineImplicit(node, def) {
            if (node && node.type === _estraverse.Syntax.Identifier) {
                this.__defineGeneric(node.name, this.implicit.set, this.implicit.variables, node, def);
            }
        }
    }]);

    return GlobalScope;
}(Scope);

var ModuleScope = exports.ModuleScope = function (_Scope2) {
    _inherits(ModuleScope, _Scope2);

    function ModuleScope(scopeManager, upperScope, block) {
        _classCallCheck(this, ModuleScope);

        return _possibleConstructorReturn(this, Object.getPrototypeOf(ModuleScope).call(this, scopeManager, 'module', upperScope, block, false));
    }

    return ModuleScope;
}(Scope);

var FunctionExpressionNameScope = exports.FunctionExpressionNameScope = function (_Scope3) {
    _inherits(FunctionExpressionNameScope, _Scope3);

    function FunctionExpressionNameScope(scopeManager, upperScope, block) {
        _classCallCheck(this, FunctionExpressionNameScope);

        var _this3 = _possibleConstructorReturn(this, Object.getPrototypeOf(FunctionExpressionNameScope).call(this, scopeManager, 'function-expression-name', upperScope, block, false));

        _this3.__define(block.id, new _definition2.default(_variable2.default.FunctionName, block.id, block, null, null, null));
        _this3.functionExpressionScope = true;
        return _this3;
    }

    return FunctionExpressionNameScope;
}(Scope);

var CatchScope = exports.CatchScope = function (_Scope4) {
    _inherits(CatchScope, _Scope4);

    function CatchScope(scopeManager, upperScope, block) {
        _classCallCheck(this, CatchScope);

        return _possibleConstructorReturn(this, Object.getPrototypeOf(CatchScope).call(this, scopeManager, 'catch', upperScope, block, false));
    }

    return CatchScope;
}(Scope);

var WithScope = exports.WithScope = function (_Scope5) {
    _inherits(WithScope, _Scope5);

    function WithScope(scopeManager, upperScope, block) {
        _classCallCheck(this, WithScope);

        return _possibleConstructorReturn(this, Object.getPrototypeOf(WithScope).call(this, scopeManager, 'with', upperScope, block, false));
    }

    _createClass(WithScope, [{
        key: '__close',
        value: function __close(scopeManager) {
            if (this.__shouldStaticallyClose(scopeManager)) {
                return _get(Object.getPrototypeOf(WithScope.prototype), '__close', this).call(this, scopeManager);
            }

            for (var i = 0, iz = this.__left.length; i < iz; ++i) {
                var ref = this.__left[i];
                ref.tainted = true;
                this.__delegateToUpperScope(ref);
            }
            this.__left = null;

            return this.upper;
        }
    }]);

    return WithScope;
}(Scope);

var TDZScope = exports.TDZScope = function (_Scope6) {
    _inherits(TDZScope, _Scope6);

    function TDZScope(scopeManager, upperScope, block) {
        _classCallCheck(this, TDZScope);

        return _possibleConstructorReturn(this, Object.getPrototypeOf(TDZScope).call(this, scopeManager, 'TDZ', upperScope, block, false));
    }

    return TDZScope;
}(Scope);

var BlockScope = exports.BlockScope = function (_Scope7) {
    _inherits(BlockScope, _Scope7);

    function BlockScope(scopeManager, upperScope, block) {
        _classCallCheck(this, BlockScope);

        return _possibleConstructorReturn(this, Object.getPrototypeOf(BlockScope).call(this, scopeManager, 'block', upperScope, block, false));
    }

    return BlockScope;
}(Scope);

var SwitchScope = exports.SwitchScope = function (_Scope8) {
    _inherits(SwitchScope, _Scope8);

    function SwitchScope(scopeManager, upperScope, block) {
        _classCallCheck(this, SwitchScope);

        return _possibleConstructorReturn(this, Object.getPrototypeOf(SwitchScope).call(this, scopeManager, 'switch', upperScope, block, false));
    }

    return SwitchScope;
}(Scope);

var FunctionScope = exports.FunctionScope = function (_Scope9) {
    _inherits(FunctionScope, _Scope9);

    function FunctionScope(scopeManager, upperScope, block, isMethodDefinition) {
        _classCallCheck(this, FunctionScope);

        // section 9.2.13, FunctionDeclarationInstantiation.
        // NOTE Arrow functions never have an arguments objects.

        var _this9 = _possibleConstructorReturn(this, Object.getPrototypeOf(FunctionScope).call(this, scopeManager, 'function', upperScope, block, isMethodDefinition));

        if (_this9.block.type !== _estraverse.Syntax.ArrowFunctionExpression) {
            _this9.__defineArguments();
        }
        return _this9;
    }

    _createClass(FunctionScope, [{
        key: 'isArgumentsMaterialized',
        value: function isArgumentsMaterialized() {
            // TODO(Constellation)
            // We can more aggressive on this condition like this.
            //
            // function t() {
            //     // arguments of t is always hidden.
            //     function arguments() {
            //     }
            // }
            if (this.block.type === _estraverse.Syntax.ArrowFunctionExpression) {
                return false;
            }

            if (!this.isStatic()) {
                return true;
            }

            var variable = this.set.get('arguments');
            (0, _assert2.default)(variable, 'Always have arguments variable.');
            return variable.tainted || variable.references.length !== 0;
        }
    }, {
        key: 'isThisMaterialized',
        value: function isThisMaterialized() {
            if (!this.isStatic()) {
                return true;
            }
            return this.thisFound;
        }
    }, {
        key: '__defineArguments',
        value: function __defineArguments() {
            this.__defineGeneric('arguments', this.set, this.variables, null, null);
            this.taints.set('arguments', true);
        }
    }]);

    return FunctionScope;
}(Scope);

var ForScope = exports.ForScope = function (_Scope10) {
    _inherits(ForScope, _Scope10);

    function ForScope(scopeManager, upperScope, block) {
        _classCallCheck(this, ForScope);

        return _possibleConstructorReturn(this, Object.getPrototypeOf(ForScope).call(this, scopeManager, 'for', upperScope, block, false));
    }

    return ForScope;
}(Scope);

var ClassScope = exports.ClassScope = function (_Scope11) {
    _inherits(ClassScope, _Scope11);

    function ClassScope(scopeManager, upperScope, block) {
        _classCallCheck(this, ClassScope);

        return _possibleConstructorReturn(this, Object.getPrototypeOf(ClassScope).call(this, scopeManager, 'class', upperScope, block, false));
    }

    return ClassScope;
}(Scope);

/* vim: set sw=4 ts=4 et tw=80 : */


},{"./definition":114,"./reference":117,"./variable":121,"assert":40,"es6-map":96,"estraverse":129}],121:[function(require,module,exports){
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

/*
  Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**
 * A Variable represents a locally scoped identifier. These include arguments to
 * functions.
 * @class Variable
 */

var Variable = function Variable(name, scope) {
  _classCallCheck(this, Variable);

  /**
   * The variable name, as given in the source code.
   * @member {String} Variable#name
   */
  this.name = name;
  /**
   * List of defining occurrences of this variable (like in 'var ...'
   * statements or as parameter), as AST nodes.
   * @member {esprima.Identifier[]} Variable#identifiers
   */
  this.identifiers = [];
  /**
   * List of {@link Reference|references} of this variable (excluding parameter entries)
   * in its defining scope and all nested scopes. For defining
   * occurrences only see {@link Variable#defs}.
   * @member {Reference[]} Variable#references
   */
  this.references = [];

  /**
   * List of defining occurrences of this variable (like in 'var ...'
   * statements or as parameter), as custom objects.
   * @member {Definition[]} Variable#defs
   */
  this.defs = [];

  this.tainted = false;
  /**
   * Whether this is a stack variable.
   * @member {boolean} Variable#stack
   */
  this.stack = true;
  /**
   * Reference to the enclosing Scope.
   * @member {Scope} Variable#scope
   */
  this.scope = scope;
};

exports.default = Variable;


Variable.CatchClause = 'CatchClause';
Variable.Parameter = 'Parameter';
Variable.FunctionName = 'FunctionName';
Variable.ClassName = 'ClassName';
Variable.Variable = 'Variable';
Variable.ImportBinding = 'ImportBinding';
Variable.TDZ = 'TDZ';
Variable.ImplicitGlobalVariable = 'ImplicitGlobalVariable';

/* vim: set sw=4 ts=4 et tw=80 : */


},{}],122:[function(require,module,exports){
module.exports={
  "_from": "escope@~3.6.0",
  "_id": "escope@3.6.0",
  "_inBundle": false,
  "_integrity": "sha1-4Bl16BJ4GhY6ba392AOY3GTIicM=",
  "_location": "/escope",
  "_phantomChildren": {},
  "_requested": {
    "type": "range",
    "registry": true,
    "raw": "escope@~3.6.0",
    "name": "escope",
    "escapedName": "escope",
    "rawSpec": "~3.6.0",
    "saveSpec": null,
    "fetchSpec": "~3.6.0"
  },
  "_requiredBy": [
    "/",
    "/esshorten2"
  ],
  "_resolved": "https://registry.npmjs.org/escope/-/escope-3.6.0.tgz",
  "_shasum": "e01975e812781a163a6dadfdd80398dc64c889c3",
  "_spec": "escope@~3.6.0",
  "_where": "/home/gw/workspace/esmangle",
  "bugs": {
    "url": "https://github.com/estools/escope/issues"
  },
  "bundleDependencies": false,
  "dependencies": {
    "es6-map": "^0.1.3",
    "es6-weak-map": "^2.0.1",
    "esrecurse": "^4.1.0",
    "estraverse": "^4.1.1"
  },
  "deprecated": false,
  "description": "ECMAScript scope analyzer",
  "devDependencies": {
    "babel": "^6.3.26",
    "babel-preset-es2015": "^6.3.13",
    "babel-register": "^6.3.13",
    "browserify": "^13.0.0",
    "chai": "^3.4.1",
    "espree": "^3.1.1",
    "esprima": "^2.7.1",
    "gulp": "^3.9.0",
    "gulp-babel": "^6.1.1",
    "gulp-bump": "^1.0.0",
    "gulp-eslint": "^1.1.1",
    "gulp-espower": "^1.0.2",
    "gulp-filter": "^3.0.1",
    "gulp-git": "^1.6.1",
    "gulp-mocha": "^2.2.0",
    "gulp-plumber": "^1.0.1",
    "gulp-sourcemaps": "^1.6.0",
    "gulp-tag-version": "^1.3.0",
    "jsdoc": "^3.4.0",
    "lazypipe": "^1.0.1",
    "vinyl-source-stream": "^1.1.0"
  },
  "engines": {
    "node": ">=0.4.0"
  },
  "homepage": "http://github.com/estools/escope",
  "license": "BSD-2-Clause",
  "main": "lib/index.js",
  "maintainers": [
    {
      "name": "Yusuke Suzuki",
      "email": "utatane.tea@gmail.com",
      "url": "http://github.com/Constellation"
    }
  ],
  "name": "escope",
  "repository": {
    "type": "git",
    "url": "git+https://github.com/estools/escope.git"
  },
  "scripts": {
    "jsdoc": "jsdoc src/*.js README.md",
    "lint": "gulp lint",
    "test": "gulp travis",
    "unit-test": "gulp test"
  },
  "version": "3.6.0"
}

},{}],123:[function(require,module,exports){
/*
  Copyright (C) 2014 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
(function () {
    'use strict';

    var estraverse = require('estraverse');

    function isNode(node) {
        if (node == null) {
            return false;
        }
        return typeof node === 'object' && typeof node.type === 'string';
    }

    function isProperty(nodeType, key) {
        return (nodeType === estraverse.Syntax.ObjectExpression || nodeType === estraverse.Syntax.ObjectPattern) && key === 'properties';
    }

    function Visitor(visitor, options) {
        options = options || {};

        this.__visitor = visitor ||  this;
        this.__childVisitorKeys = options.childVisitorKeys
            ? Object.assign({}, estraverse.VisitorKeys, options.childVisitorKeys)
            : estraverse.VisitorKeys;
        if (options.fallback === 'iteration') {
            this.__fallback = Object.keys;
        } else if (typeof options.fallback === 'function') {
            this.__fallback = options.fallback;
        }
    }

    /* Default method for visiting children.
     * When you need to call default visiting operation inside custom visiting
     * operation, you can use it with `this.visitChildren(node)`.
     */
    Visitor.prototype.visitChildren = function (node) {
        var type, children, i, iz, j, jz, child;

        if (node == null) {
            return;
        }

        type = node.type || estraverse.Syntax.Property;

        children = this.__childVisitorKeys[type];
        if (!children) {
            if (this.__fallback) {
                children = this.__fallback(node);
            } else {
                throw new Error('Unknown node type ' + type + '.');
            }
        }

        for (i = 0, iz = children.length; i < iz; ++i) {
            child = node[children[i]];
            if (child) {
                if (Array.isArray(child)) {
                    for (j = 0, jz = child.length; j < jz; ++j) {
                        if (child[j]) {
                            if (isNode(child[j]) || isProperty(type, children[i])) {
                                this.visit(child[j]);
                            }
                        }
                    }
                } else if (isNode(child)) {
                    this.visit(child);
                }
            }
        }
    };

    /* Dispatching node. */
    Visitor.prototype.visit = function (node) {
        var type;

        if (node == null) {
            return;
        }

        type = node.type || estraverse.Syntax.Property;
        if (this.__visitor[type]) {
            this.__visitor[type].call(this, node);
            return;
        }
        this.visitChildren(node);
    };

    exports.version = require('./package.json').version;
    exports.Visitor = Visitor;
    exports.visit = function (node, visitor, options) {
        var v = new Visitor(visitor, options);
        v.visit(node);
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./package.json":124,"estraverse":129}],124:[function(require,module,exports){
module.exports={
  "_from": "esrecurse@^4.1.0",
  "_id": "esrecurse@4.2.1",
  "_inBundle": false,
  "_integrity": "sha512-64RBB++fIOAXPw3P9cy89qfMlvZEXZkqqJkjqqXIvzP5ezRZjW+lPWjw35UX/3EhUPFYbg5ER4JYgDw4007/DQ==",
  "_location": "/esrecurse",
  "_phantomChildren": {},
  "_requested": {
    "type": "range",
    "registry": true,
    "raw": "esrecurse@^4.1.0",
    "name": "esrecurse",
    "escapedName": "esrecurse",
    "rawSpec": "^4.1.0",
    "saveSpec": null,
    "fetchSpec": "^4.1.0"
  },
  "_requiredBy": [
    "/escope"
  ],
  "_resolved": "https://registry.npmjs.org/esrecurse/-/esrecurse-4.2.1.tgz",
  "_shasum": "007a3b9fdbc2b3bb87e4879ea19c92fdbd3942cf",
  "_spec": "esrecurse@^4.1.0",
  "_where": "/home/gw/workspace/esmangle/node_modules/escope",
  "babel": {
    "presets": [
      "es2015"
    ]
  },
  "bugs": {
    "url": "https://github.com/estools/esrecurse/issues"
  },
  "bundleDependencies": false,
  "dependencies": {
    "estraverse": "^4.1.0"
  },
  "deprecated": false,
  "description": "ECMAScript AST recursive visitor",
  "devDependencies": {
    "babel-cli": "^6.24.1",
    "babel-eslint": "^7.2.3",
    "babel-preset-es2015": "^6.24.1",
    "babel-register": "^6.24.1",
    "chai": "^4.0.2",
    "esprima": "^4.0.0",
    "gulp": "^3.9.0",
    "gulp-bump": "^2.7.0",
    "gulp-eslint": "^4.0.0",
    "gulp-filter": "^5.0.0",
    "gulp-git": "^2.4.1",
    "gulp-mocha": "^4.3.1",
    "gulp-tag-version": "^1.2.1",
    "jsdoc": "^3.3.0-alpha10",
    "minimist": "^1.1.0"
  },
  "engines": {
    "node": ">=4.0"
  },
  "homepage": "https://github.com/estools/esrecurse",
  "license": "BSD-2-Clause",
  "main": "esrecurse.js",
  "maintainers": [
    {
      "name": "Yusuke Suzuki",
      "email": "utatane.tea@gmail.com",
      "url": "https://github.com/Constellation"
    }
  ],
  "name": "esrecurse",
  "repository": {
    "type": "git",
    "url": "git+https://github.com/estools/esrecurse.git"
  },
  "scripts": {
    "lint": "gulp lint",
    "test": "gulp travis",
    "unit-test": "gulp test"
  },
  "version": "4.2.1"
}

},{}],125:[function(require,module,exports){
/*!
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*global exports:true*/

(function () {
    'use strict';

    var escope,
        estraverse,
        esutils,
        utility,
        version,
        assert,
        Syntax,
        Map;

    escope = require('escope');
    estraverse = require('estraverse');
    esutils = require('esutils');
    utility = require('./utility');
    Map = require('./map');
    version = require('../package.json').version;

    Syntax = estraverse.Syntax;

    assert = function assert(cond, message) {
        if (!cond) {
            throw new Error(message);
        }
    };

    if (version.indexOf('-dev', version.length - 4) === -1) {
        assert = function () { };
    }

    function NameGenerator(scope, options) {
        this._scope = scope;
        this._functionName = '';
        if (!options.distinguishFunctionExpressionScope &&
                this._scope.upper &&
                this._scope.upper.functionExpressionScope) {
            this._functionName = this._scope.upper.block.id.name;
        }
    }

    NameGenerator.prototype.passAsUnique = function passAsUnique(name) {
        var i, iz;
        if (this._functionName === name) {
            return false;
        }
        if (esutils.keyword.isKeywordES5(name, true) || esutils.keyword.isRestrictedWord(name)) {
            return false;
        }
        if (this._scope.taints.has(name)) {
            return false;
        }
        for (i = 0, iz = this._scope.through.length; i < iz; ++i) {
            if (this._scope.through[i].identifier.name === name) {
                return false;
            }
        }

        if (this._scope.type === 'for' &&
            this._scope.variableScope.__id_map__ &&
            this._scope.variableScope.__id_map__[name]
        ) {
            return false;
        }
        return true;
    };

    NameGenerator.prototype.generateName = function generateName(tip) {
        do {
            tip = utility.generateNextName(tip);
        } while (!this.passAsUnique(tip));
        return tip;
    };

    function run(scope, options) {
        var i, iz, j, jz, variable, name, def, ref, generator;
        var varMap = {};
        var idMap = {};

        generator = new NameGenerator(scope, options);

        if (scope.isStatic()) {
            // skip TDZ scope for now
            if (scope.type === 'TDZ') {
                return;
            }

            name = '9';

            scope.variables.sort(function (a, b) {
                if (a.tainted) {
                    return 1;
                }
                if (b.tainted) {
                    return -1;
                }
                return (b.identifiers.length + b.references.length) - (a.identifiers.length + a.references.length);
            });

            /**
             * fix through
             */
            scope.through.forEach(function (n) {
              var name = n.identifier.name;
              var upper = scope.upper;
              var map;
              if (n.identifier.__done__) {
                return;
              }
              while (upper) {
                map = upper.__var_map__;
                if (map && map[name]) {
                  n.identifier.name = map[name];
                  n.identifier.__done__ = true;
                  break;
                }
                upper = upper.upper;
              }
            });

            for (i = 0, iz = scope.variables.length; i < iz; ++i) {
                variable = scope.variables[i];

                if (variable.tainted) {
                    continue;
                }

                // Because `arguments` definition is nothing.
                // But if `var arguments` is defined, identifiers.length !== 0
                // and this doesn't indicate arguments.
                if (variable.identifiers.length === 0) {
                    // do not change names because this is special name
                    continue;
                }
                name = generator.generateName(name);

                for (j = 0, jz = variable.identifiers.length; j < jz; ++j) {
                    def = variable.identifiers[j];
                    if (def.__done__) {
                      continue;
                    }
                    varMap[variable.name] = name;
                    idMap[name] = variable.name;
                    // change definition's name
                    def.name = name;
                    def.__done__ = true;
                }

                for (j = 0, jz = variable.references.length; j < jz; ++j) {
                    ref = variable.references[j];
                    if (ref.identifier.__done__) {
                      continue;
                    }
                    // change reference's name
                    ref.identifier.name = name;
                    ref.identifier.__done__ = true;
                }
            }
            scope.__var_map__ = varMap;
            scope.__id_map__ = idMap;
            var scopeFrom;

            for (j = 0, jz = scope.references.length; j < jz; ++j) {
              ref = scope.references[j];
              if (ref.identifier.__done__) {
                continue;
              }
              scopeFrom = ref.from;
              while (scopeFrom) {
                varMap = scopeFrom.__var_map__;
                if (varMap && varMap[ref.identifier.name]) {
                  // change reference's name
                  ref.identifier.name = varMap[ref.identifier.name];
                  break;
                }
                scopeFrom = scopeFrom.upper;
              }
            }
        }
    }

    function Label(node, upper) {
        this.node = node;
        this.upper = upper;
        this.users = [];
        this.names = new Map();
        this.name = null;
    }

    Label.prototype.mangle = function () {
        var tip, current, i, iz;
        tip = '9';

        // merge already used names
        for (current = this.upper; current; current = current.upper) {
            if (current.name !== null) {
                this.names.set(current.name, true);
            }
        }

        do {
            tip = utility.generateNextName(tip);
        } while (this.names.has(tip));

        this.name = tip;

        for (current = this.upper; current; current = current.upper) {
            current.names.set(tip, true);
        }

        this.node.label.name = tip;
        for (i = 0, iz = this.users.length; i < iz; ++i) {
            this.users[i].label.name = tip;
        }
    };

    function LabelScope(upper) {
        this.map = new Map();
        this.upper = upper;
        this.label = null;
        this.labels = [];
    }

    LabelScope.prototype.register = function register(node) {
        var name;

        assert(node.type === Syntax.LabeledStatement, 'node should be LabeledStatement');

        this.label = new Label(node, this.label);
        this.labels.push(this.label);

        name = node.label.name;
        assert(!this.map.has(name), 'duplicate label is found');
        this.map.set(name, this.label);
    };

    LabelScope.prototype.unregister = function unregister(node) {
        var name, ref;
        if (node.type !== Syntax.LabeledStatement) {
            return;
        }

        name = node.label.name;
        ref = this.map.get(name);
        this.map['delete'](name);

        this.label = ref.upper;
    };

    LabelScope.prototype.resolve = function resolve(node) {
        var name;
        if (node.label) {
            name = node.label.name;
            assert(this.map.has(name), 'unresolved label');
            this.map.get(name).users.push(node);
        }
    };

    LabelScope.prototype.close = function close() {
        var i, iz, label;
        this.labels.sort(function (lhs, rhs) {
            return rhs.users.length - lhs.users.length;
        });

        for (i = 0, iz = this.labels.length; i < iz; ++i) {
            label = this.labels[i];
            label.mangle();
        }

        return this.upper;
    };

    function mangleLabels(tree) {
        var labelScope;
        var FuncOrProgram = [Syntax.Program, Syntax.FunctionExpression, Syntax.FunctionDeclaration];
        estraverse.traverse(tree, {
            enter: function (node) {
                if (FuncOrProgram.indexOf(node.type) >= 0) {
                    labelScope = new LabelScope(labelScope);
                    return;
                }

                switch (node.type) {
                case Syntax.LabeledStatement:
                    labelScope.register(node);
                    break;

                case Syntax.BreakStatement:
                case Syntax.ContinueStatement:
                    labelScope.resolve(node);
                    break;
                }
            },
            leave: function (node) {
                labelScope.unregister(node);
                if (FuncOrProgram.indexOf(node.type) >= 0) {
                    labelScope = labelScope.close();
                }
            }
        });

        return tree;
    }

    function mangle(tree, options) {
        var result, manager, i, iz;

        if (options == null) {
            options = { destructive: false };
        }

        result = (options.destructive == null || options.destructive) ? tree : utility.deepCopy(tree);
        manager = escope.analyze(result, {
            directive: true,
            ecmaVersion: options.esmaVersion || 6,
            sourceType: options.sourceType || 'script'
        });
        // mangling names
        for (i = 0, iz = manager.scopes.length; i < iz; ++i) {
            run(manager.scopes[i], options);
        }

        // mangling labels
        return mangleLabels(result);
    }

    exports.mangle = mangle;
    exports.version = version;
    exports.generateNextName = utility.generateNextName;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"../package.json":128,"./map":126,"./utility":127,"escope":115,"estraverse":129,"esutils":134}],126:[function(require,module,exports){
arguments[4][5][0].apply(exports,arguments)
},{"dup":5}],127:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*global exports:true*/

(function () {
    'use strict';

    var isArray, NameSequence, ZeroSequenceCache;

    isArray = Array.isArray;
    if (!isArray) {
        isArray = function isArray(array) {
            return Object.prototype.toString.call(array) === '[object Array]';
        };
    }

    function deepCopy(obj) {
        function deepCopyInternal(obj, result) {
            var key, val;
            for (key in obj) {
                if (key.lastIndexOf('__', 0) === 0) {
                    continue;
                }
                if (obj.hasOwnProperty(key)) {
                    val = obj[key];
                    if (typeof val === 'object' && val !== null) {
                        if (val instanceof RegExp) {
                            val = new RegExp(val);
                        } else {
                            val = deepCopyInternal(val, isArray(val) ? [] : {});
                        }
                    }
                    result[key] = val;
                }
            }
            return result;
        }
        return deepCopyInternal(obj, isArray(obj) ? [] : {});
    }

    function stringRepeat(str, num) {
        var result = '';

        for (num |= 0; num > 0; num >>>= 1, str += str) {
            if (num & 1) {
                result += str;
            }
        }

        return result;
    }

    // generateNextName

    ZeroSequenceCache = [];

    function zeroSequence(num) {
        var res = ZeroSequenceCache[num];
        if (res !== undefined) {
            return res;
        }
        res = stringRepeat('0', num);
        ZeroSequenceCache[num] = res;
        return res;
    }

    NameSequence = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_$'.split('');

    function generateNextName(name) {
        var ch, index, cur;

        cur = name.length - 1;
        do {
            ch = name.charAt(cur);
            index = NameSequence.indexOf(ch);
            if (index !== (NameSequence.length - 1)) {
                return name.substring(0, cur) + NameSequence[index + 1] + zeroSequence(name.length - (cur + 1));
            }
            --cur;
        } while (cur >= 0);
        return 'a' + zeroSequence(name.length);
    }

    exports.generateNextName = generateNextName;
    exports.deepCopy = deepCopy;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],128:[function(require,module,exports){
module.exports={
  "_from": "esshorten2@~1.1.20",
  "_id": "esshorten2@1.1.20",
  "_inBundle": false,
  "_integrity": "sha1-j/2kZFpeDztZNuzR/Zu8apo2DpU=",
  "_location": "/esshorten2",
  "_phantomChildren": {},
  "_requested": {
    "type": "range",
    "registry": true,
    "raw": "esshorten2@~1.1.20",
    "name": "esshorten2",
    "escapedName": "esshorten2",
    "rawSpec": "~1.1.20",
    "saveSpec": null,
    "fetchSpec": "~1.1.20"
  },
  "_requiredBy": [
    "/"
  ],
  "_resolved": "https://registry.npmjs.org/esshorten2/-/esshorten2-1.1.20.tgz",
  "_shasum": "8ffda4645a5e0f3b5936ecd1fd9bbc6a9a360e95",
  "_spec": "esshorten2@~1.1.20",
  "_where": "/home/gw/workspace/esmangle",
  "bugs": {
    "url": "https://github.com/estools/esshorten/issues"
  },
  "bundleDependencies": false,
  "dependencies": {
    "escope": "~3.6.0",
    "estraverse": "~4.1.1",
    "esutils": "~2.0.2"
  },
  "deprecated": false,
  "description": "Shorten (mangle) names in JavaScript code",
  "devDependencies": {
    "chai": "*",
    "coffee-script": "~1.10.0",
    "commonjs-everywhere": "~0.9.7",
    "gulp": "~3.9.0",
    "gulp-jshint": "~1.11.2",
    "gulp-mocha": "~2.1.3",
    "jshint-stylish": "~2.0.1"
  },
  "directories": {
    "lib": "./lib"
  },
  "engines": {
    "node": ">=0.6.0"
  },
  "homepage": "https://github.com/estools/esshorten#readme",
  "licenses": [
    {
      "type": "BSD",
      "url": "http://github.com/estools/esshorten/raw/master/LICENSE.BSD"
    }
  ],
  "main": "lib/esshorten.js",
  "maintainers": [
    {
      "name": "Yusuke Suzuki",
      "email": "utatane.tea@gmail.com",
      "url": "http://github.com/Constellation"
    }
  ],
  "name": "esshorten2",
  "repository": {
    "type": "git",
    "url": "git+ssh://git@github.com/estools/esshorten.git"
  },
  "scripts": {
    "lint": "gulp lint",
    "test": "gulp travis",
    "unit-test": "gulp test"
  },
  "version": "1.1.20"
}

},{}],129:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*jslint vars:false, bitwise:true*/
/*jshint indent:4*/
/*global exports:true*/
(function clone(exports) {
    'use strict';

    var Syntax,
        isArray,
        VisitorOption,
        VisitorKeys,
        objectCreate,
        objectKeys,
        BREAK,
        SKIP,
        REMOVE;

    function ignoreJSHintError() { }

    isArray = Array.isArray;
    if (!isArray) {
        isArray = function isArray(array) {
            return Object.prototype.toString.call(array) === '[object Array]';
        };
    }

    function deepCopy(obj) {
        var ret = {}, key, val;
        for (key in obj) {
            if (obj.hasOwnProperty(key)) {
                val = obj[key];
                if (typeof val === 'object' && val !== null) {
                    ret[key] = deepCopy(val);
                } else {
                    ret[key] = val;
                }
            }
        }
        return ret;
    }

    function shallowCopy(obj) {
        var ret = {}, key;
        for (key in obj) {
            if (obj.hasOwnProperty(key)) {
                ret[key] = obj[key];
            }
        }
        return ret;
    }
    ignoreJSHintError(shallowCopy);

    // based on LLVM libc++ upper_bound / lower_bound
    // MIT License

    function upperBound(array, func) {
        var diff, len, i, current;

        len = array.length;
        i = 0;

        while (len) {
            diff = len >>> 1;
            current = i + diff;
            if (func(array[current])) {
                len = diff;
            } else {
                i = current + 1;
                len -= diff + 1;
            }
        }
        return i;
    }

    function lowerBound(array, func) {
        var diff, len, i, current;

        len = array.length;
        i = 0;

        while (len) {
            diff = len >>> 1;
            current = i + diff;
            if (func(array[current])) {
                i = current + 1;
                len -= diff + 1;
            } else {
                len = diff;
            }
        }
        return i;
    }
    ignoreJSHintError(lowerBound);

    objectCreate = Object.create || (function () {
        function F() { }

        return function (o) {
            F.prototype = o;
            return new F();
        };
    })();

    objectKeys = Object.keys || function (o) {
        var keys = [], key;
        for (key in o) {
            keys.push(key);
        }
        return keys;
    };

    function extend(to, from) {
        var keys = objectKeys(from), key, i, len;
        for (i = 0, len = keys.length; i < len; i += 1) {
            key = keys[i];
            to[key] = from[key];
        }
        return to;
    }

    Syntax = {
        AssignmentExpression: 'AssignmentExpression',
        AssignmentPattern: 'AssignmentPattern',
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AwaitExpression: 'AwaitExpression', // CAUTION: It's deferred to ES7.
        BlockStatement: 'BlockStatement',
        BinaryExpression: 'BinaryExpression',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ComprehensionBlock: 'ComprehensionBlock',  // CAUTION: It's deferred to ES7.
        ComprehensionExpression: 'ComprehensionExpression',  // CAUTION: It's deferred to ES7.
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DirectiveStatement: 'DirectiveStatement',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportAllDeclaration: 'ExportAllDeclaration',
        ExportDefaultDeclaration: 'ExportDefaultDeclaration',
        ExportNamedDeclaration: 'ExportNamedDeclaration',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForStatement: 'ForStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        GeneratorExpression: 'GeneratorExpression',  // CAUTION: It's deferred to ES7.
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        Literal: 'Literal',
        LabeledStatement: 'LabeledStatement',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MetaProperty: 'MetaProperty',
        MethodDefinition: 'MethodDefinition',
        ModuleSpecifier: 'ModuleSpecifier',
        NewExpression: 'NewExpression',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        Program: 'Program',
        Property: 'Property',
        RestElement: 'RestElement',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        Super: 'Super',
        SwitchStatement: 'SwitchStatement',
        SwitchCase: 'SwitchCase',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TryStatement: 'TryStatement',
        UnaryExpression: 'UnaryExpression',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        YieldExpression: 'YieldExpression'
    };

    VisitorKeys = {
        AssignmentExpression: ['left', 'right'],
        AssignmentPattern: ['left', 'right'],
        ArrayExpression: ['elements'],
        ArrayPattern: ['elements'],
        ArrowFunctionExpression: ['params', 'body'],
        AwaitExpression: ['argument'], // CAUTION: It's deferred to ES7.
        BlockStatement: ['body'],
        BinaryExpression: ['left', 'right'],
        BreakStatement: ['label'],
        CallExpression: ['callee', 'arguments'],
        CatchClause: ['param', 'body'],
        ClassBody: ['body'],
        ClassDeclaration: ['id', 'superClass', 'body'],
        ClassExpression: ['id', 'superClass', 'body'],
        ComprehensionBlock: ['left', 'right'],  // CAUTION: It's deferred to ES7.
        ComprehensionExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
        ConditionalExpression: ['test', 'consequent', 'alternate'],
        ContinueStatement: ['label'],
        DebuggerStatement: [],
        DirectiveStatement: [],
        DoWhileStatement: ['body', 'test'],
        EmptyStatement: [],
        ExportAllDeclaration: ['source'],
        ExportDefaultDeclaration: ['declaration'],
        ExportNamedDeclaration: ['declaration', 'specifiers', 'source'],
        ExportSpecifier: ['exported', 'local'],
        ExpressionStatement: ['expression'],
        ForStatement: ['init', 'test', 'update', 'body'],
        ForInStatement: ['left', 'right', 'body'],
        ForOfStatement: ['left', 'right', 'body'],
        FunctionDeclaration: ['id', 'params', 'body'],
        FunctionExpression: ['id', 'params', 'body'],
        GeneratorExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
        Identifier: [],
        IfStatement: ['test', 'consequent', 'alternate'],
        ImportDeclaration: ['specifiers', 'source'],
        ImportDefaultSpecifier: ['local'],
        ImportNamespaceSpecifier: ['local'],
        ImportSpecifier: ['imported', 'local'],
        Literal: [],
        LabeledStatement: ['label', 'body'],
        LogicalExpression: ['left', 'right'],
        MemberExpression: ['object', 'property'],
        MetaProperty: ['meta', 'property'],
        MethodDefinition: ['key', 'value'],
        ModuleSpecifier: [],
        NewExpression: ['callee', 'arguments'],
        ObjectExpression: ['properties'],
        ObjectPattern: ['properties'],
        Program: ['body'],
        Property: ['key', 'value'],
        RestElement: [ 'argument' ],
        ReturnStatement: ['argument'],
        SequenceExpression: ['expressions'],
        SpreadElement: ['argument'],
        Super: [],
        SwitchStatement: ['discriminant', 'cases'],
        SwitchCase: ['test', 'consequent'],
        TaggedTemplateExpression: ['tag', 'quasi'],
        TemplateElement: [],
        TemplateLiteral: ['quasis', 'expressions'],
        ThisExpression: [],
        ThrowStatement: ['argument'],
        TryStatement: ['block', 'handler', 'finalizer'],
        UnaryExpression: ['argument'],
        UpdateExpression: ['argument'],
        VariableDeclaration: ['declarations'],
        VariableDeclarator: ['id', 'init'],
        WhileStatement: ['test', 'body'],
        WithStatement: ['object', 'body'],
        YieldExpression: ['argument']
    };

    // unique id
    BREAK = {};
    SKIP = {};
    REMOVE = {};

    VisitorOption = {
        Break: BREAK,
        Skip: SKIP,
        Remove: REMOVE
    };

    function Reference(parent, key) {
        this.parent = parent;
        this.key = key;
    }

    Reference.prototype.replace = function replace(node) {
        this.parent[this.key] = node;
    };

    Reference.prototype.remove = function remove() {
        if (isArray(this.parent)) {
            this.parent.splice(this.key, 1);
            return true;
        } else {
            this.replace(null);
            return false;
        }
    };

    function Element(node, path, wrap, ref) {
        this.node = node;
        this.path = path;
        this.wrap = wrap;
        this.ref = ref;
    }

    function Controller() { }

    // API:
    // return property path array from root to current node
    Controller.prototype.path = function path() {
        var i, iz, j, jz, result, element;

        function addToPath(result, path) {
            if (isArray(path)) {
                for (j = 0, jz = path.length; j < jz; ++j) {
                    result.push(path[j]);
                }
            } else {
                result.push(path);
            }
        }

        // root node
        if (!this.__current.path) {
            return null;
        }

        // first node is sentinel, second node is root element
        result = [];
        for (i = 2, iz = this.__leavelist.length; i < iz; ++i) {
            element = this.__leavelist[i];
            addToPath(result, element.path);
        }
        addToPath(result, this.__current.path);
        return result;
    };

    // API:
    // return type of current node
    Controller.prototype.type = function () {
        var node = this.current();
        return node.type || this.__current.wrap;
    };

    // API:
    // return array of parent elements
    Controller.prototype.parents = function parents() {
        var i, iz, result;

        // first node is sentinel
        result = [];
        for (i = 1, iz = this.__leavelist.length; i < iz; ++i) {
            result.push(this.__leavelist[i].node);
        }

        return result;
    };

    // API:
    // return current node
    Controller.prototype.current = function current() {
        return this.__current.node;
    };

    Controller.prototype.__execute = function __execute(callback, element) {
        var previous, result;

        result = undefined;

        previous  = this.__current;
        this.__current = element;
        this.__state = null;
        if (callback) {
            result = callback.call(this, element.node, this.__leavelist[this.__leavelist.length - 1].node);
        }
        this.__current = previous;

        return result;
    };

    // API:
    // notify control skip / break
    Controller.prototype.notify = function notify(flag) {
        this.__state = flag;
    };

    // API:
    // skip child nodes of current node
    Controller.prototype.skip = function () {
        this.notify(SKIP);
    };

    // API:
    // break traversals
    Controller.prototype['break'] = function () {
        this.notify(BREAK);
    };

    // API:
    // remove node
    Controller.prototype.remove = function () {
        this.notify(REMOVE);
    };

    Controller.prototype.__initialize = function(root, visitor) {
        this.visitor = visitor;
        this.root = root;
        this.__worklist = [];
        this.__leavelist = [];
        this.__current = null;
        this.__state = null;
        this.__fallback = visitor.fallback === 'iteration';
        this.__keys = VisitorKeys;
        if (visitor.keys) {
            this.__keys = extend(objectCreate(this.__keys), visitor.keys);
        }
    };

    function isNode(node) {
        if (node == null) {
            return false;
        }
        return typeof node === 'object' && typeof node.type === 'string';
    }

    function isProperty(nodeType, key) {
        return (nodeType === Syntax.ObjectExpression || nodeType === Syntax.ObjectPattern) && 'properties' === key;
    }

    Controller.prototype.traverse = function traverse(root, visitor) {
        var worklist,
            leavelist,
            element,
            node,
            nodeType,
            ret,
            key,
            current,
            current2,
            candidates,
            candidate,
            sentinel;

        this.__initialize(root, visitor);

        sentinel = {};

        // reference
        worklist = this.__worklist;
        leavelist = this.__leavelist;

        // initialize
        worklist.push(new Element(root, null, null, null));
        leavelist.push(new Element(null, null, null, null));

        while (worklist.length) {
            element = worklist.pop();

            if (element === sentinel) {
                element = leavelist.pop();

                ret = this.__execute(visitor.leave, element);

                if (this.__state === BREAK || ret === BREAK) {
                    return;
                }
                continue;
            }

            if (element.node) {

                ret = this.__execute(visitor.enter, element);

                if (this.__state === BREAK || ret === BREAK) {
                    return;
                }

                worklist.push(sentinel);
                leavelist.push(element);

                if (this.__state === SKIP || ret === SKIP) {
                    continue;
                }

                node = element.node;
                nodeType = node.type || element.wrap;
                candidates = this.__keys[nodeType];
                if (!candidates) {
                    if (this.__fallback) {
                        candidates = objectKeys(node);
                    } else {
                        throw new Error('Unknown node type ' + nodeType + '.');
                    }
                }

                current = candidates.length;
                while ((current -= 1) >= 0) {
                    key = candidates[current];
                    candidate = node[key];
                    if (!candidate) {
                        continue;
                    }

                    if (isArray(candidate)) {
                        current2 = candidate.length;
                        while ((current2 -= 1) >= 0) {
                            if (!candidate[current2]) {
                                continue;
                            }
                            if (isProperty(nodeType, candidates[current])) {
                                element = new Element(candidate[current2], [key, current2], 'Property', null);
                            } else if (isNode(candidate[current2])) {
                                element = new Element(candidate[current2], [key, current2], null, null);
                            } else {
                                continue;
                            }
                            worklist.push(element);
                        }
                    } else if (isNode(candidate)) {
                        worklist.push(new Element(candidate, key, null, null));
                    }
                }
            }
        }
    };

    Controller.prototype.replace = function replace(root, visitor) {
        function removeElem(element) {
            var i,
                key,
                nextElem,
                parent;

            if (element.ref.remove()) {
                // When the reference is an element of an array.
                key = element.ref.key;
                parent = element.ref.parent;

                // If removed from array, then decrease following items' keys.
                i = worklist.length;
                while (i--) {
                    nextElem = worklist[i];
                    if (nextElem.ref && nextElem.ref.parent === parent) {
                        if  (nextElem.ref.key < key) {
                            break;
                        }
                        --nextElem.ref.key;
                    }
                }
            }
        }

        var worklist,
            leavelist,
            node,
            nodeType,
            target,
            element,
            current,
            current2,
            candidates,
            candidate,
            sentinel,
            outer,
            key;

        this.__initialize(root, visitor);

        sentinel = {};

        // reference
        worklist = this.__worklist;
        leavelist = this.__leavelist;

        // initialize
        outer = {
            root: root
        };
        element = new Element(root, null, null, new Reference(outer, 'root'));
        worklist.push(element);
        leavelist.push(element);

        while (worklist.length) {
            element = worklist.pop();

            if (element === sentinel) {
                element = leavelist.pop();

                target = this.__execute(visitor.leave, element);

                // node may be replaced with null,
                // so distinguish between undefined and null in this place
                if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
                    // replace
                    element.ref.replace(target);
                }

                if (this.__state === REMOVE || target === REMOVE) {
                    removeElem(element);
                }

                if (this.__state === BREAK || target === BREAK) {
                    return outer.root;
                }
                continue;
            }

            target = this.__execute(visitor.enter, element);

            // node may be replaced with null,
            // so distinguish between undefined and null in this place
            if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
                // replace
                element.ref.replace(target);
                element.node = target;
            }

            if (this.__state === REMOVE || target === REMOVE) {
                removeElem(element);
                element.node = null;
            }

            if (this.__state === BREAK || target === BREAK) {
                return outer.root;
            }

            // node may be null
            node = element.node;
            if (!node) {
                continue;
            }

            worklist.push(sentinel);
            leavelist.push(element);

            if (this.__state === SKIP || target === SKIP) {
                continue;
            }

            nodeType = node.type || element.wrap;
            candidates = this.__keys[nodeType];
            if (!candidates) {
                if (this.__fallback) {
                    candidates = objectKeys(node);
                } else {
                    throw new Error('Unknown node type ' + nodeType + '.');
                }
            }

            current = candidates.length;
            while ((current -= 1) >= 0) {
                key = candidates[current];
                candidate = node[key];
                if (!candidate) {
                    continue;
                }

                if (isArray(candidate)) {
                    current2 = candidate.length;
                    while ((current2 -= 1) >= 0) {
                        if (!candidate[current2]) {
                            continue;
                        }
                        if (isProperty(nodeType, candidates[current])) {
                            element = new Element(candidate[current2], [key, current2], 'Property', new Reference(candidate, current2));
                        } else if (isNode(candidate[current2])) {
                            element = new Element(candidate[current2], [key, current2], null, new Reference(candidate, current2));
                        } else {
                            continue;
                        }
                        worklist.push(element);
                    }
                } else if (isNode(candidate)) {
                    worklist.push(new Element(candidate, key, null, new Reference(node, key)));
                }
            }
        }

        return outer.root;
    };

    function traverse(root, visitor) {
        var controller = new Controller();
        return controller.traverse(root, visitor);
    }

    function replace(root, visitor) {
        var controller = new Controller();
        return controller.replace(root, visitor);
    }

    function extendCommentRange(comment, tokens) {
        var target;

        target = upperBound(tokens, function search(token) {
            return token.range[0] > comment.range[0];
        });

        comment.extendedRange = [comment.range[0], comment.range[1]];

        if (target !== tokens.length) {
            comment.extendedRange[1] = tokens[target].range[0];
        }

        target -= 1;
        if (target >= 0) {
            comment.extendedRange[0] = tokens[target].range[1];
        }

        return comment;
    }

    function attachComments(tree, providedComments, tokens) {
        // At first, we should calculate extended comment ranges.
        var comments = [], comment, len, i, cursor;

        if (!tree.range) {
            throw new Error('attachComments needs range information');
        }

        // tokens array is empty, we attach comments to tree as 'leadingComments'
        if (!tokens.length) {
            if (providedComments.length) {
                for (i = 0, len = providedComments.length; i < len; i += 1) {
                    comment = deepCopy(providedComments[i]);
                    comment.extendedRange = [0, tree.range[0]];
                    comments.push(comment);
                }
                tree.leadingComments = comments;
            }
            return tree;
        }

        for (i = 0, len = providedComments.length; i < len; i += 1) {
            comments.push(extendCommentRange(deepCopy(providedComments[i]), tokens));
        }

        // This is based on John Freeman's implementation.
        cursor = 0;
        traverse(tree, {
            enter: function (node) {
                var comment;

                while (cursor < comments.length) {
                    comment = comments[cursor];
                    if (comment.extendedRange[1] > node.range[0]) {
                        break;
                    }

                    if (comment.extendedRange[1] === node.range[0]) {
                        if (!node.leadingComments) {
                            node.leadingComments = [];
                        }
                        node.leadingComments.push(comment);
                        comments.splice(cursor, 1);
                    } else {
                        cursor += 1;
                    }
                }

                // already out of owned node
                if (cursor === comments.length) {
                    return VisitorOption.Break;
                }

                if (comments[cursor].extendedRange[0] > node.range[1]) {
                    return VisitorOption.Skip;
                }
            }
        });

        cursor = 0;
        traverse(tree, {
            leave: function (node) {
                var comment;

                while (cursor < comments.length) {
                    comment = comments[cursor];
                    if (node.range[1] < comment.extendedRange[0]) {
                        break;
                    }

                    if (node.range[1] === comment.extendedRange[0]) {
                        if (!node.trailingComments) {
                            node.trailingComments = [];
                        }
                        node.trailingComments.push(comment);
                        comments.splice(cursor, 1);
                    } else {
                        cursor += 1;
                    }
                }

                // already out of owned node
                if (cursor === comments.length) {
                    return VisitorOption.Break;
                }

                if (comments[cursor].extendedRange[0] > node.range[1]) {
                    return VisitorOption.Skip;
                }
            }
        });

        return tree;
    }

    exports.version = require('./package.json').version;
    exports.Syntax = Syntax;
    exports.traverse = traverse;
    exports.replace = replace;
    exports.attachComments = attachComments;
    exports.VisitorKeys = VisitorKeys;
    exports.VisitorOption = VisitorOption;
    exports.Controller = Controller;
    exports.cloneEnvironment = function () { return clone({}); };

    return exports;
}(exports));
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./package.json":130}],130:[function(require,module,exports){
module.exports={
  "_from": "estraverse@~4.1.1",
  "_id": "estraverse@4.1.1",
  "_inBundle": false,
  "_integrity": "sha1-9srKcokzqFDvkGYdDheYK6RxEaI=",
  "_location": "/estraverse",
  "_phantomChildren": {},
  "_requested": {
    "type": "range",
    "registry": true,
    "raw": "estraverse@~4.1.1",
    "name": "estraverse",
    "escapedName": "estraverse",
    "rawSpec": "~4.1.1",
    "saveSpec": null,
    "fetchSpec": "~4.1.1"
  },
  "_requiredBy": [
    "/",
    "/escope",
    "/esrecurse",
    "/esshorten2"
  ],
  "_resolved": "https://registry.npmjs.org/estraverse/-/estraverse-4.1.1.tgz",
  "_shasum": "f6caca728933a850ef90661d0e17982ba47111a2",
  "_spec": "estraverse@~4.1.1",
  "_where": "/home/gw/workspace/esmangle",
  "bugs": {
    "url": "https://github.com/estools/estraverse/issues"
  },
  "bundleDependencies": false,
  "deprecated": false,
  "description": "ECMAScript JS AST traversal functions",
  "devDependencies": {
    "chai": "^2.1.1",
    "coffee-script": "^1.8.0",
    "espree": "^1.11.0",
    "gulp": "^3.8.10",
    "gulp-bump": "^0.2.2",
    "gulp-filter": "^2.0.0",
    "gulp-git": "^1.0.1",
    "gulp-tag-version": "^1.2.1",
    "jshint": "^2.5.6",
    "mocha": "^2.1.0"
  },
  "engines": {
    "node": ">=0.10.0"
  },
  "homepage": "https://github.com/estools/estraverse",
  "license": "BSD-2-Clause",
  "main": "estraverse.js",
  "maintainers": [
    {
      "name": "Yusuke Suzuki",
      "email": "utatane.tea@gmail.com",
      "url": "http://github.com/Constellation"
    }
  ],
  "name": "estraverse",
  "repository": {
    "type": "git",
    "url": "git+ssh://git@github.com/estools/estraverse.git"
  },
  "scripts": {
    "lint": "jshint estraverse.js",
    "test": "npm run-script lint && npm run-script unit-test",
    "unit-test": "mocha --compilers coffee:coffee-script/register"
  },
  "version": "4.1.1"
}

},{}],131:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    function isExpression(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'ArrayExpression':
            case 'AssignmentExpression':
            case 'BinaryExpression':
            case 'CallExpression':
            case 'ConditionalExpression':
            case 'FunctionExpression':
            case 'Identifier':
            case 'Literal':
            case 'LogicalExpression':
            case 'MemberExpression':
            case 'NewExpression':
            case 'ObjectExpression':
            case 'SequenceExpression':
            case 'ThisExpression':
            case 'UnaryExpression':
            case 'UpdateExpression':
                return true;
        }
        return false;
    }

    function isIterationStatement(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'DoWhileStatement':
            case 'ForInStatement':
            case 'ForStatement':
            case 'WhileStatement':
                return true;
        }
        return false;
    }

    function isStatement(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'BlockStatement':
            case 'BreakStatement':
            case 'ContinueStatement':
            case 'DebuggerStatement':
            case 'DoWhileStatement':
            case 'EmptyStatement':
            case 'ExpressionStatement':
            case 'ForInStatement':
            case 'ForStatement':
            case 'IfStatement':
            case 'LabeledStatement':
            case 'ReturnStatement':
            case 'SwitchStatement':
            case 'ThrowStatement':
            case 'TryStatement':
            case 'VariableDeclaration':
            case 'WhileStatement':
            case 'WithStatement':
                return true;
        }
        return false;
    }

    function isSourceElement(node) {
      return isStatement(node) || node != null && node.type === 'FunctionDeclaration';
    }

    function trailingStatement(node) {
        switch (node.type) {
        case 'IfStatement':
            if (node.alternate != null) {
                return node.alternate;
            }
            return node.consequent;

        case 'LabeledStatement':
        case 'ForStatement':
        case 'ForInStatement':
        case 'WhileStatement':
        case 'WithStatement':
            return node.body;
        }
        return null;
    }

    function isProblematicIfStatement(node) {
        var current;

        if (node.type !== 'IfStatement') {
            return false;
        }
        if (node.alternate == null) {
            return false;
        }
        current = node.consequent;
        do {
            if (current.type === 'IfStatement') {
                if (current.alternate == null)  {
                    return true;
                }
            }
            current = trailingStatement(current);
        } while (current);

        return false;
    }

    module.exports = {
        isExpression: isExpression,
        isStatement: isStatement,
        isIterationStatement: isIterationStatement,
        isSourceElement: isSourceElement,
        isProblematicIfStatement: isProblematicIfStatement,

        trailingStatement: trailingStatement
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],132:[function(require,module,exports){
/*
  Copyright (C) 2013-2014 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2014 Ivan Nikulin <ifaaan@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    var ES6Regex, ES5Regex, NON_ASCII_WHITESPACES, IDENTIFIER_START, IDENTIFIER_PART, ch;

    // See `tools/generate-identifier-regex.js`.
    ES5Regex = {
        // ECMAScript 5.1/Unicode v9.0.0 NonAsciiIdentifierStart:
        NonAsciiIdentifierStart: /[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0-\u08B4\u08B6-\u08BD\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0AF9\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58-\u0C5A\u0C60\u0C61\u0C80\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D54-\u0D56\u0D5F-\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u1884\u1887-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1C80-\u1C88\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FD5\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA7AE\uA7B0-\uA7B7\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA8FD\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB65\uAB70-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]/,
        // ECMAScript 5.1/Unicode v9.0.0 NonAsciiIdentifierPart:
        NonAsciiIdentifierPart: /[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0-\u08B4\u08B6-\u08BD\u08D4-\u08E1\u08E3-\u0963\u0966-\u096F\u0971-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0AF9\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C00-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58-\u0C5A\u0C60-\u0C63\u0C66-\u0C6F\u0C80-\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D01-\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D54-\u0D57\u0D5F-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DE6-\u0DEF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191E\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19D9\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1AB0-\u1ABD\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1C80-\u1C88\u1CD0-\u1CD2\u1CD4-\u1CF6\u1CF8\u1CF9\u1D00-\u1DF5\u1DFB-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u2E2F\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099\u309A\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FD5\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA7AE\uA7B0-\uA7B7\uA7F7-\uA827\uA840-\uA873\uA880-\uA8C5\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA8FD\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uA9E0-\uA9FE\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB65\uAB70-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE2F\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]/
    };

    ES6Regex = {
        // ECMAScript 6/Unicode v9.0.0 NonAsciiIdentifierStart:
        NonAsciiIdentifierStart: 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        // ECMAScript 6/Unicode v9.0.0 NonAsciiIdentifierPart:
        NonAsciiIdentifierPart: /[\xAA\xB5\xB7\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0-\u08B4\u08B6-\u08BD\u08D4-\u08E1\u08E3-\u0963\u0966-\u096F\u0971-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0AF9\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C00-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58-\u0C5A\u0C60-\u0C63\u0C66-\u0C6F\u0C80-\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D01-\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D54-\u0D57\u0D5F-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DE6-\u0DEF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1369-\u1371\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191E\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19DA\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1AB0-\u1ABD\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1C80-\u1C88\u1CD0-\u1CD2\u1CD4-\u1CF6\u1CF8\u1CF9\u1D00-\u1DF5\u1DFB-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2118-\u211D\u2124\u2126\u2128\u212A-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FD5\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA7AE\uA7B0-\uA7B7\uA7F7-\uA827\uA840-\uA873\uA880-\uA8C5\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA8FD\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uA9E0-\uA9FE\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB65\uAB70-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE2F\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDDFD\uDE80-\uDE9C\uDEA0-\uDED0\uDEE0\uDF00-\uDF1F\uDF30-\uDF4A\uDF50-\uDF7A\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDCA0-\uDCA9\uDCB0-\uDCD3\uDCD8-\uDCFB\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDCE0-\uDCF2\uDCF4\uDCF5\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00-\uDE03\uDE05\uDE06\uDE0C-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE38-\uDE3A\uDE3F\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE6\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48\uDC80-\uDCB2\uDCC0-\uDCF2]|\uD804[\uDC00-\uDC46\uDC66-\uDC6F\uDC7F-\uDCBA\uDCD0-\uDCE8\uDCF0-\uDCF9\uDD00-\uDD34\uDD36-\uDD3F\uDD50-\uDD73\uDD76\uDD80-\uDDC4\uDDCA-\uDDCC\uDDD0-\uDDDA\uDDDC\uDE00-\uDE11\uDE13-\uDE37\uDE3E\uDE80-\uDE86\uDE88\uDE8A-\uDE8D\uDE8F-\uDE9D\uDE9F-\uDEA8\uDEB0-\uDEEA\uDEF0-\uDEF9\uDF00-\uDF03\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3C-\uDF44\uDF47\uDF48\uDF4B-\uDF4D\uDF50\uDF57\uDF5D-\uDF63\uDF66-\uDF6C\uDF70-\uDF74]|\uD805[\uDC00-\uDC4A\uDC50-\uDC59\uDC80-\uDCC5\uDCC7\uDCD0-\uDCD9\uDD80-\uDDB5\uDDB8-\uDDC0\uDDD8-\uDDDD\uDE00-\uDE40\uDE44\uDE50-\uDE59\uDE80-\uDEB7\uDEC0-\uDEC9\uDF00-\uDF19\uDF1D-\uDF2B\uDF30-\uDF39]|\uD806[\uDCA0-\uDCE9\uDCFF\uDEC0-\uDEF8]|\uD807[\uDC00-\uDC08\uDC0A-\uDC36\uDC38-\uDC40\uDC50-\uDC59\uDC72-\uDC8F\uDC92-\uDCA7\uDCA9-\uDCB6]|\uD808[\uDC00-\uDF99]|\uD809[\uDC00-\uDC6E\uDC80-\uDD43]|[\uD80C\uD81C-\uD820\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD811[\uDC00-\uDE46]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDE60-\uDE69\uDED0-\uDEED\uDEF0-\uDEF4\uDF00-\uDF36\uDF40-\uDF43\uDF50-\uDF59\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDF00-\uDF44\uDF50-\uDF7E\uDF8F-\uDF9F\uDFE0]|\uD821[\uDC00-\uDFEC]|\uD822[\uDC00-\uDEF2]|\uD82C[\uDC00\uDC01]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99\uDC9D\uDC9E]|\uD834[\uDD65-\uDD69\uDD6D-\uDD72\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB\uDFCE-\uDFFF]|\uD836[\uDE00-\uDE36\uDE3B-\uDE6C\uDE75\uDE84\uDE9B-\uDE9F\uDEA1-\uDEAF]|\uD838[\uDC00-\uDC06\uDC08-\uDC18\uDC1B-\uDC21\uDC23\uDC24\uDC26-\uDC2A]|\uD83A[\uDC00-\uDCC4\uDCD0-\uDCD6\uDD00-\uDD4A\uDD50-\uDD59]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1]|\uD87E[\uDC00-\uDE1D]|\uDB40[\uDD00-\uDDEF]/
    };

    function isDecimalDigit(ch) {
        return 0x30 <= ch && ch <= 0x39;  // 0..9
    }

    function isHexDigit(ch) {
        return 0x30 <= ch && ch <= 0x39 ||  // 0..9
            0x61 <= ch && ch <= 0x66 ||     // a..f
            0x41 <= ch && ch <= 0x46;       // A..F
    }

    function isOctalDigit(ch) {
        return ch >= 0x30 && ch <= 0x37;  // 0..7
    }

    // 7.2 White Space

    NON_ASCII_WHITESPACES = [
        0x1680,
        0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A,
        0x202F, 0x205F,
        0x3000,
        0xFEFF
    ];

    function isWhiteSpace(ch) {
        return ch === 0x20 || ch === 0x09 || ch === 0x0B || ch === 0x0C || ch === 0xA0 ||
            ch >= 0x1680 && NON_ASCII_WHITESPACES.indexOf(ch) >= 0;
    }

    // 7.3 Line Terminators

    function isLineTerminator(ch) {
        return ch === 0x0A || ch === 0x0D || ch === 0x2028 || ch === 0x2029;
    }

    // 7.6 Identifier Names and Identifiers

    function fromCodePoint(cp) {
        if (cp <= 0xFFFF) { return String.fromCharCode(cp); }
        var cu1 = String.fromCharCode(Math.floor((cp - 0x10000) / 0x400) + 0xD800);
        var cu2 = String.fromCharCode(((cp - 0x10000) % 0x400) + 0xDC00);
        return cu1 + cu2;
    }

    IDENTIFIER_START = new Array(0x80);
    for(ch = 0; ch < 0x80; ++ch) {
        IDENTIFIER_START[ch] =
            ch >= 0x61 && ch <= 0x7A ||  // a..z
            ch >= 0x41 && ch <= 0x5A ||  // A..Z
            ch === 0x24 || ch === 0x5F;  // $ (dollar) and _ (underscore)
    }

    IDENTIFIER_PART = new Array(0x80);
    for(ch = 0; ch < 0x80; ++ch) {
        IDENTIFIER_PART[ch] =
            ch >= 0x61 && ch <= 0x7A ||  // a..z
            ch >= 0x41 && ch <= 0x5A ||  // A..Z
            ch >= 0x30 && ch <= 0x39 ||  // 0..9
            ch === 0x24 || ch === 0x5F;  // $ (dollar) and _ (underscore)
    }

    function isIdentifierStartES5(ch) {
        return ch < 0x80 ? IDENTIFIER_START[ch] : ES5Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
    }

    function isIdentifierPartES5(ch) {
        return ch < 0x80 ? IDENTIFIER_PART[ch] : ES5Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
    }

    function isIdentifierStartES6(ch) {
        return ch < 0x80 ? IDENTIFIER_START[ch] : ES6Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
    }

    function isIdentifierPartES6(ch) {
        return ch < 0x80 ? IDENTIFIER_PART[ch] : ES6Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
    }

    module.exports = {
        isDecimalDigit: isDecimalDigit,
        isHexDigit: isHexDigit,
        isOctalDigit: isOctalDigit,
        isWhiteSpace: isWhiteSpace,
        isLineTerminator: isLineTerminator,
        isIdentifierStartES5: isIdentifierStartES5,
        isIdentifierPartES5: isIdentifierPartES5,
        isIdentifierStartES6: isIdentifierStartES6,
        isIdentifierPartES6: isIdentifierPartES6
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],133:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    var code = require('./code');

    function isStrictModeReservedWordES6(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'let':
            return true;
        default:
            return false;
        }
    }

    function isKeywordES5(id, strict) {
        // yield should not be treated as keyword under non-strict mode.
        if (!strict && id === 'yield') {
            return false;
        }
        return isKeywordES6(id, strict);
    }

    function isKeywordES6(id, strict) {
        if (strict && isStrictModeReservedWordES6(id)) {
            return true;
        }

        switch (id.length) {
        case 2:
            return (id === 'if') || (id === 'in') || (id === 'do');
        case 3:
            return (id === 'var') || (id === 'for') || (id === 'new') || (id === 'try');
        case 4:
            return (id === 'this') || (id === 'else') || (id === 'case') ||
                (id === 'void') || (id === 'with') || (id === 'enum');
        case 5:
            return (id === 'while') || (id === 'break') || (id === 'catch') ||
                (id === 'throw') || (id === 'const') || (id === 'yield') ||
                (id === 'class') || (id === 'super');
        case 6:
            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
                (id === 'switch') || (id === 'export') || (id === 'import');
        case 7:
            return (id === 'default') || (id === 'finally') || (id === 'extends');
        case 8:
            return (id === 'function') || (id === 'continue') || (id === 'debugger');
        case 10:
            return (id === 'instanceof');
        default:
            return false;
        }
    }

    function isReservedWordES5(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES5(id, strict);
    }

    function isReservedWordES6(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES6(id, strict);
    }

    function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
    }

    function isIdentifierNameES5(id) {
        var i, iz, ch;

        if (id.length === 0) { return false; }

        ch = id.charCodeAt(0);
        if (!code.isIdentifierStartES5(ch)) {
            return false;
        }

        for (i = 1, iz = id.length; i < iz; ++i) {
            ch = id.charCodeAt(i);
            if (!code.isIdentifierPartES5(ch)) {
                return false;
            }
        }
        return true;
    }

    function decodeUtf16(lead, trail) {
        return (lead - 0xD800) * 0x400 + (trail - 0xDC00) + 0x10000;
    }

    function isIdentifierNameES6(id) {
        var i, iz, ch, lowCh, check;

        if (id.length === 0) { return false; }

        check = code.isIdentifierStartES6;
        for (i = 0, iz = id.length; i < iz; ++i) {
            ch = id.charCodeAt(i);
            if (0xD800 <= ch && ch <= 0xDBFF) {
                ++i;
                if (i >= iz) { return false; }
                lowCh = id.charCodeAt(i);
                if (!(0xDC00 <= lowCh && lowCh <= 0xDFFF)) {
                    return false;
                }
                ch = decodeUtf16(ch, lowCh);
            }
            if (!check(ch)) {
                return false;
            }
            check = code.isIdentifierPartES6;
        }
        return true;
    }

    function isIdentifierES5(id, strict) {
        return isIdentifierNameES5(id) && !isReservedWordES5(id, strict);
    }

    function isIdentifierES6(id, strict) {
        return isIdentifierNameES6(id) && !isReservedWordES6(id, strict);
    }

    module.exports = {
        isKeywordES5: isKeywordES5,
        isKeywordES6: isKeywordES6,
        isReservedWordES5: isReservedWordES5,
        isReservedWordES6: isReservedWordES6,
        isRestrictedWord: isRestrictedWord,
        isIdentifierNameES5: isIdentifierNameES5,
        isIdentifierNameES6: isIdentifierNameES6,
        isIdentifierES5: isIdentifierES5,
        isIdentifierES6: isIdentifierES6
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./code":132}],134:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/


(function () {
    'use strict';

    exports.ast = require('./ast');
    exports.code = require('./code');
    exports.keyword = require('./keyword');
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./ast":131,"./code":132,"./keyword":133}],135:[function(require,module,exports){
'use strict';

var d        = require('d')
  , callable = require('es5-ext/object/valid-callable')

  , apply = Function.prototype.apply, call = Function.prototype.call
  , create = Object.create, defineProperty = Object.defineProperty
  , defineProperties = Object.defineProperties
  , hasOwnProperty = Object.prototype.hasOwnProperty
  , descriptor = { configurable: true, enumerable: false, writable: true }

  , on, once, off, emit, methods, descriptors, base;

on = function (type, listener) {
	var data;

	callable(listener);

	if (!hasOwnProperty.call(this, '__ee__')) {
		data = descriptor.value = create(null);
		defineProperty(this, '__ee__', descriptor);
		descriptor.value = null;
	} else {
		data = this.__ee__;
	}
	if (!data[type]) data[type] = listener;
	else if (typeof data[type] === 'object') data[type].push(listener);
	else data[type] = [data[type], listener];

	return this;
};

once = function (type, listener) {
	var once, self;

	callable(listener);
	self = this;
	on.call(this, type, once = function () {
		off.call(self, type, once);
		apply.call(listener, this, arguments);
	});

	once.__eeOnceListener__ = listener;
	return this;
};

off = function (type, listener) {
	var data, listeners, candidate, i;

	callable(listener);

	if (!hasOwnProperty.call(this, '__ee__')) return this;
	data = this.__ee__;
	if (!data[type]) return this;
	listeners = data[type];

	if (typeof listeners === 'object') {
		for (i = 0; (candidate = listeners[i]); ++i) {
			if ((candidate === listener) ||
					(candidate.__eeOnceListener__ === listener)) {
				if (listeners.length === 2) data[type] = listeners[i ? 0 : 1];
				else listeners.splice(i, 1);
			}
		}
	} else {
		if ((listeners === listener) ||
				(listeners.__eeOnceListener__ === listener)) {
			delete data[type];
		}
	}

	return this;
};

emit = function (type) {
	var i, l, listener, listeners, args;

	if (!hasOwnProperty.call(this, '__ee__')) return;
	listeners = this.__ee__[type];
	if (!listeners) return;

	if (typeof listeners === 'object') {
		l = arguments.length;
		args = new Array(l - 1);
		for (i = 1; i < l; ++i) args[i - 1] = arguments[i];

		listeners = listeners.slice();
		for (i = 0; (listener = listeners[i]); ++i) {
			apply.call(listener, this, args);
		}
	} else {
		switch (arguments.length) {
		case 1:
			call.call(listeners, this);
			break;
		case 2:
			call.call(listeners, this, arguments[1]);
			break;
		case 3:
			call.call(listeners, this, arguments[1], arguments[2]);
			break;
		default:
			l = arguments.length;
			args = new Array(l - 1);
			for (i = 1; i < l; ++i) {
				args[i - 1] = arguments[i];
			}
			apply.call(listeners, this, args);
		}
	}
};

methods = {
	on: on,
	once: once,
	off: off,
	emit: emit
};

descriptors = {
	on: d(on),
	once: d(once),
	off: d(off),
	emit: d(emit)
};

base = defineProperties({}, descriptors);

module.exports = exports = function (o) {
	return (o == null) ? create(base) : defineProperties(Object(o), descriptors);
};
exports.methods = methods;

},{"d":46,"es5-ext/object/valid-callable":81}],136:[function(require,module,exports){
var naiveFallback = function () {
	if (typeof self === "object" && self) return self;
	if (typeof window === "object" && window) return window;
	throw new Error("Unable to resolve global `this`");
};

module.exports = (function () {
	if (this) return this;

	// Unexpected strict mode (may happen if e.g. bundled into ESM module)

	// Thanks @mathiasbynens -> https://mathiasbynens.be/notes/globalthis
	// In all ES5+ engines global object inherits from Object.prototype
	// (if you approached one that doesn't please report)
	try {
		Object.defineProperty(Object.prototype, "__global__", {
			get: function () { return this; },
			configurable: true
		});
	} catch (error) {
		// Unfortunate case of Object.prototype being sealed (via preventExtensions, seal or freeze)
		return naiveFallback();
	}
	try {
		// Safari case (window.__global__ is resolved with global context, but __global__ does not)
		if (!__global__) return naiveFallback();
		return __global__;
	} finally {
		delete Object.prototype.__global__;
	}
})();

},{}],137:[function(require,module,exports){
"use strict";

module.exports = require("./is-implemented")() ? globalThis : require("./implementation");

},{"./implementation":136,"./is-implemented":138}],138:[function(require,module,exports){
"use strict";

module.exports = function () {
	if (typeof globalThis !== "object") return false;
	if (!globalThis) return false;
	return globalThis.Array === Array;
};

},{}],139:[function(require,module,exports){
module.exports = Array.isArray || function (arr) {
  return Object.prototype.toString.call(arr) == '[object Array]';
};

},{}],140:[function(require,module,exports){
/**
 * Special language-specific overrides.
 *
 * Source: ftp://ftp.unicode.org/Public/UCD/latest/ucd/SpecialCasing.txt
 *
 * @type {Object}
 */
var LANGUAGES = {
  tr: {
    regexp: /\u0130|\u0049|\u0049\u0307/g,
    map: {
      '\u0130': '\u0069',
      '\u0049': '\u0131',
      '\u0049\u0307': '\u0069'
    }
  },
  az: {
    regexp: /[\u0130]/g,
    map: {
      '\u0130': '\u0069',
      '\u0049': '\u0131',
      '\u0049\u0307': '\u0069'
    }
  },
  lt: {
    regexp: /[\u0049\u004A\u012E\u00CC\u00CD\u0128]/g,
    map: {
      '\u0049': '\u0069\u0307',
      '\u004A': '\u006A\u0307',
      '\u012E': '\u012F\u0307',
      '\u00CC': '\u0069\u0307\u0300',
      '\u00CD': '\u0069\u0307\u0301',
      '\u0128': '\u0069\u0307\u0303'
    }
  }
}

/**
 * Lowercase a string.
 *
 * @param  {String} str
 * @return {String}
 */
module.exports = function (str, locale) {
  var lang = LANGUAGES[locale]

  str = str == null ? '' : String(str)

  if (lang) {
    str = str.replace(lang.regexp, function (m) { return lang.map[m] })
  }

  return str.toLowerCase()
}

},{}],141:[function(require,module,exports){
/*
object-assign
(c) Sindre Sorhus
@license MIT
*/

'use strict';
/* eslint-disable no-unused-vars */
var getOwnPropertySymbols = Object.getOwnPropertySymbols;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;

function toObject(val) {
	if (val === null || val === undefined) {
		throw new TypeError('Object.assign cannot be called with null or undefined');
	}

	return Object(val);
}

function shouldUseNative() {
	try {
		if (!Object.assign) {
			return false;
		}

		// Detect buggy property enumeration order in older V8 versions.

		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
		test1[5] = 'de';
		if (Object.getOwnPropertyNames(test1)[0] === '5') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test2 = {};
		for (var i = 0; i < 10; i++) {
			test2['_' + String.fromCharCode(i)] = i;
		}
		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
			return test2[n];
		});
		if (order2.join('') !== '0123456789') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test3 = {};
		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
			test3[letter] = letter;
		});
		if (Object.keys(Object.assign({}, test3)).join('') !==
				'abcdefghijklmnopqrst') {
			return false;
		}

		return true;
	} catch (err) {
		// We don't expect any of the above to throw, but better to be safe.
		return false;
	}
}

module.exports = shouldUseNative() ? Object.assign : function (target, source) {
	var from;
	var to = toObject(target);
	var symbols;

	for (var s = 1; s < arguments.length; s++) {
		from = Object(arguments[s]);

		for (var key in from) {
			if (hasOwnProperty.call(from, key)) {
				to[key] = from[key];
			}
		}

		if (getOwnPropertySymbols) {
			symbols = getOwnPropertySymbols(from);
			for (var i = 0; i < symbols.length; i++) {
				if (propIsEnumerable.call(from, symbols[i])) {
					to[symbols[i]] = from[symbols[i]];
				}
			}
		}
	}

	return to;
};

},{}],142:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],143:[function(require,module,exports){
var lowerCase = require('lower-case')

var NON_WORD_REGEXP = require('./vendor/non-word-regexp')
var CAMEL_CASE_REGEXP = require('./vendor/camel-case-regexp')
var TRAILING_DIGIT_REGEXP = require('./vendor/trailing-digit-regexp')

/**
 * Sentence case a string.
 *
 * @param  {String} str
 * @param  {String} locale
 * @param  {String} replacement
 * @return {String}
 */
module.exports = function (str, locale, replacement) {
  if (str == null) {
    return ''
  }

  replacement = replacement || ' '

  function replace (match, index, string) {
    if (index === 0 || index === (string.length - match.length)) {
      return ''
    }

    return replacement
  }

  str = String(str)
    // Support camel case ("camelCase" -> "camel Case").
    .replace(CAMEL_CASE_REGEXP, '$1 $2')
    // Support digit groups ("test2012" -> "test 2012").
    .replace(TRAILING_DIGIT_REGEXP, '$1 $2')
    // Remove all non-word characters and replace with a single space.
    .replace(NON_WORD_REGEXP, replace)

  // Lower case the entire string.
  return lowerCase(str, locale)
}

},{"./vendor/camel-case-regexp":144,"./vendor/non-word-regexp":145,"./vendor/trailing-digit-regexp":146,"lower-case":140}],144:[function(require,module,exports){
module.exports = 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},{}],145:[function(require,module,exports){
module.exports = 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F9\uFF10-\uFF19]+/g

},{}],146:[function(require,module,exports){
module.exports = /([\u0030-\u0039\u00B2\u00B3\u00B9\u00BC-\u00BE\u0660-\u0669\u06F0-\u06F9\u07C0-\u07C9\u0966-\u096F\u09E6-\u09EF\u09F4-\u09F9\u0A66-\u0A6F\u0AE6-\u0AEF\u0B66-\u0B6F\u0B72-\u0B77\u0BE6-\u0BF2\u0C66-\u0C6F\u0C78-\u0C7E\u0CE6-\u0CEF\u0D66-\u0D75\u0E50-\u0E59\u0ED0-\u0ED9\u0F20-\u0F33\u1040-\u1049\u1090-\u1099\u1369-\u137C\u16EE-\u16F0\u17E0-\u17E9\u17F0-\u17F9\u1810-\u1819\u1946-\u194F\u19D0-\u19DA\u1A80-\u1A89\u1A90-\u1A99\u1B50-\u1B59\u1BB0-\u1BB9\u1C40-\u1C49\u1C50-\u1C59\u2070\u2074-\u2079\u2080-\u2089\u2150-\u2182\u2185-\u2189\u2460-\u249B\u24EA-\u24FF\u2776-\u2793\u2CFD\u3007\u3021-\u3029\u3038-\u303A\u3192-\u3195\u3220-\u3229\u3248-\u324F\u3251-\u325F\u3280-\u3289\u32B1-\u32BF\uA620-\uA629\uA6E6-\uA6EF\uA830-\uA835\uA8D0-\uA8D9\uA900-\uA909\uA9D0-\uA9D9\uAA50-\uAA59\uABF0-\uABF9\uFF10-\uFF19])([^\u0030-\u0039\u00B2\u00B3\u00B9\u00BC-\u00BE\u0660-\u0669\u06F0-\u06F9\u07C0-\u07C9\u0966-\u096F\u09E6-\u09EF\u09F4-\u09F9\u0A66-\u0A6F\u0AE6-\u0AEF\u0B66-\u0B6F\u0B72-\u0B77\u0BE6-\u0BF2\u0C66-\u0C6F\u0C78-\u0C7E\u0CE6-\u0CEF\u0D66-\u0D75\u0E50-\u0E59\u0ED0-\u0ED9\u0F20-\u0F33\u1040-\u1049\u1090-\u1099\u1369-\u137C\u16EE-\u16F0\u17E0-\u17E9\u17F0-\u17F9\u1810-\u1819\u1946-\u194F\u19D0-\u19DA\u1A80-\u1A89\u1A90-\u1A99\u1B50-\u1B59\u1BB0-\u1BB9\u1C40-\u1C49\u1C50-\u1C59\u2070\u2074-\u2079\u2080-\u2089\u2150-\u2182\u2185-\u2189\u2460-\u249B\u24EA-\u24FF\u2776-\u2793\u2CFD\u3007\u3021-\u3029\u3038-\u303A\u3192-\u3195\u3220-\u3229\u3248-\u324F\u3251-\u325F\u3280-\u3289\u32B1-\u32BF\uA620-\uA629\uA6E6-\uA6EF\uA830-\uA835\uA8D0-\uA8D9\uA900-\uA909\uA9D0-\uA9D9\uAA50-\uAA59\uABF0-\uABF9\uFF10-\uFF19])/g

},{}],147:[function(require,module,exports){
"use strict";

var isPrototype = require("../prototype/is");

module.exports = function (value) {
	if (typeof value !== "function") return false;

	if (!hasOwnProperty.call(value, "length")) return false;

	try {
		if (typeof value.length !== "number") return false;
		if (typeof value.call !== "function") return false;
		if (typeof value.apply !== "function") return false;
	} catch (error) {
		return false;
	}

	return !isPrototype(value);
};

},{"../prototype/is":154}],148:[function(require,module,exports){
"use strict";

var isValue       = require("../value/is")
  , isObject      = require("../object/is")
  , stringCoerce  = require("../string/coerce")
  , toShortString = require("./to-short-string");

var resolveMessage = function (message, value) {
	return message.replace("%v", toShortString(value));
};

module.exports = function (value, defaultMessage, inputOptions) {
	if (!isObject(inputOptions)) throw new TypeError(resolveMessage(defaultMessage, value));
	if (!isValue(value)) {
		if ("default" in inputOptions) return inputOptions["default"];
		if (inputOptions.isOptional) return null;
	}
	var errorMessage = stringCoerce(inputOptions.errorMessage);
	if (!isValue(errorMessage)) errorMessage = defaultMessage;
	throw new TypeError(resolveMessage(errorMessage, value));
};

},{"../object/is":151,"../string/coerce":155,"../value/is":157,"./to-short-string":150}],149:[function(require,module,exports){
"use strict";

module.exports = function (value) {
	try {
		return value.toString();
	} catch (error) {
		try { return String(value); }
		catch (error2) { return null; }
	}
};

},{}],150:[function(require,module,exports){
"use strict";

var safeToString = require("./safe-to-string");

var reNewLine = /[\n\r\u2028\u2029]/g;

module.exports = function (value) {
	var string = safeToString(value);
	if (string === null) return "<Non-coercible to string value>";
	// Trim if too long
	if (string.length > 100) string = string.slice(0, 99) + "…";
	// Replace eventual new lines
	string = string.replace(reNewLine, function (char) {
		switch (char) {
			case "\n":
				return "\\n";
			case "\r":
				return "\\r";
			case "\u2028":
				return "\\u2028";
			case "\u2029":
				return "\\u2029";
			/* istanbul ignore next */
			default:
				throw new Error("Unexpected character");
		}
	});
	return string;
};

},{"./safe-to-string":149}],151:[function(require,module,exports){
"use strict";

var isValue = require("../value/is");

// prettier-ignore
var possibleTypes = { "object": true, "function": true, "undefined": true /* document.all */ };

module.exports = function (value) {
	if (!isValue(value)) return false;
	return hasOwnProperty.call(possibleTypes, typeof value);
};

},{"../value/is":157}],152:[function(require,module,exports){
"use strict";

var resolveException = require("../lib/resolve-exception")
  , is               = require("./is");

module.exports = function (value/*, options*/) {
	if (is(value)) return value;
	return resolveException(value, "%v is not a plain function", arguments[1]);
};

},{"../lib/resolve-exception":148,"./is":153}],153:[function(require,module,exports){
"use strict";

var isFunction = require("../function/is");

var classRe = /^\s*class[\s{/}]/, functionToString = Function.prototype.toString;

module.exports = function (value) {
	if (!isFunction(value)) return false;
	if (classRe.test(functionToString.call(value))) return false;
	return true;
};

},{"../function/is":147}],154:[function(require,module,exports){
"use strict";

var isObject = require("../object/is");

module.exports = function (value) {
	if (!isObject(value)) return false;
	try {
		if (!value.constructor) return false;
		return value.constructor.prototype === value;
	} catch (error) {
		return false;
	}
};

},{"../object/is":151}],155:[function(require,module,exports){
"use strict";

var isValue  = require("../value/is")
  , isObject = require("../object/is");

var objectToString = Object.prototype.toString;

module.exports = function (value) {
	if (!isValue(value)) return null;
	if (isObject(value)) {
		// Reject Object.prototype.toString coercion
		var valueToString = value.toString;
		if (typeof valueToString !== "function") return null;
		if (valueToString === objectToString) return null;
		// Note: It can be object coming from other realm, still as there's no ES3 and CSP compliant
		// way to resolve its realm's Object.prototype.toString it's left as not addressed edge case
	}
	try {
		return "" + value; // Ensure implicit coercion
	} catch (error) {
		return null;
	}
};

},{"../object/is":151,"../value/is":157}],156:[function(require,module,exports){
"use strict";

var resolveException = require("../lib/resolve-exception")
  , is               = require("./is");

module.exports = function (value/*, options*/) {
	if (is(value)) return value;
	return resolveException(value, "Cannot use %v", arguments[1]);
};

},{"../lib/resolve-exception":148,"./is":157}],157:[function(require,module,exports){
"use strict";

// ES3 safe
var _undefined = void 0;

module.exports = function (value) { return value !== _undefined && value !== null; };

},{}],158:[function(require,module,exports){
/**
 * Special language-specific overrides.
 *
 * Source: ftp://ftp.unicode.org/Public/UCD/latest/ucd/SpecialCasing.txt
 *
 * @type {Object}
 */
var LANGUAGES = {
  tr: {
    regexp: /[\u0069]/g,
    map: {
      '\u0069': '\u0130'
    }
  },
  az: {
    regexp: /[\u0069]/g,
    map: {
      '\u0069': '\u0130'
    }
  },
  lt: {
    regexp: /[\u0069\u006A\u012F]\u0307|\u0069\u0307[\u0300\u0301\u0303]/g,
    map: {
      '\u0069\u0307': '\u0049',
      '\u006A\u0307': '\u004A',
      '\u012F\u0307': '\u012E',
      '\u0069\u0307\u0300': '\u00CC',
      '\u0069\u0307\u0301': '\u00CD',
      '\u0069\u0307\u0303': '\u0128'
    }
  }
}

/**
 * Upper case a string.
 *
 * @param  {String} str
 * @return {String}
 */
module.exports = function (str, locale) {
  var lang = LANGUAGES[locale]

  str = str == null ? '' : String(str)

  if (lang) {
    str = str.replace(lang.regexp, function (m) { return lang.map[m] })
  }

  return str.toUpperCase()
}

},{}],159:[function(require,module,exports){
module.exports={
  "name": "esmangle2",
  "description": "ECMAScript code mangler / minifier",
  "homepage": "http://github.com/estools/esmangle.html",
  "main": "lib/esmangle.js",
  "bin": {
    "esmangle": "./bin/esmangle.js"
  },
  "version": "1.0.11",
  "engines": {
    "node": ">=0.10.0"
  },
  "directories": {
    "lib": "./lib"
  },
  "maintainers": [
    {
      "name": "Yusuke Suzuki",
      "email": "utatane.tea@gmail.com",
      "web": "http://github.com/Constellation"
    }
  ],
  "repository": {
    "type": "git",
    "url": "http://github.com/estools/esmangle.git"
  },
  "dependencies": {
    "browserify": "^16.5.0",
    "build": "^0.1.4",
    "camel-case": "^1.1.2",
    "escodegen": "~1.8.0",
    "escope": "~3.6.0",
    "esprima": "^2.7.2",
    "esshorten2": "~1.1.20",
    "estraverse": "~4.1.1",
    "esutils": "~2.0.2",
    "isarray": "0.0.1",
    "mocha": "^7.0.1",
    "optionator": "^0.5.0",
    "source-map": "^0.5.3"
  },
  "devDependencies": {
    "async": "~1.5.2",
    "chai": "*",
    "clone": "^1.0.0",
    "commonjs-everywhere": "~0.9.7",
    "grunt": "~0.4.5",
    "grunt-cli": "~0.1.13",
    "grunt-contrib-clean": "~0.6.0",
    "grunt-contrib-copy": "^0.8.0",
    "grunt-contrib-jshint": "^0.11.0",
    "grunt-mocha-test": "~0.12.4",
    "grunt-shell": "~1.1.1",
    "grunt-update-submodules": "~0.4.1",
    "q": "^1.2.0",
    "xyz": "^0.5.0"
  },
  "license": "BSD-2-Clause",
  "scripts": {
    "test": "grunt travis",
    "lint": "grunt lint",
    "regression-test": "grunt test:regression",
    "unit-test": "grunt test",
    "build": "grunt build"
  }
}

},{}],160:[function(require,module,exports){
(function (global){
global.esmangle = require('../lib/esmangle');
(function () {
    // entry points
    require('../lib/pass/tree-based-constant-folding');
    require('../lib/pass/hoist-variable-to-arguments');
    require('../lib/pass/transform-dynamic-to-static-property-access');
    require('../lib/pass/transform-dynamic-to-static-property-definition');
    require('../lib/pass/transform-immediate-function-call');
    require('../lib/pass/transform-logical-association');
    require('../lib/pass/reordering-function-declarations');
    require('../lib/pass/remove-unused-label');
    require('../lib/pass/remove-empty-statement');
    require('../lib/pass/remove-wasted-blocks');
    require('../lib/pass/transform-to-compound-assignment');
    require('../lib/pass/transform-to-sequence-expression');
    require('../lib/pass/transform-branch-to-expression');
    require('../lib/pass/transform-typeof-undefined');
    require('../lib/pass/reduce-sequence-expression');
    require('../lib/pass/reduce-branch-jump');
    require('../lib/pass/reduce-multiple-if-statements');
    require('../lib/pass/dead-code-elimination');
    require('../lib/pass/remove-side-effect-free-expressions');
    require('../lib/pass/remove-context-sensitive-expressions');
    require('../lib/pass/concatenate-variable-definition');
    require('../lib/pass/drop-variable-definition');
    require('../lib/pass/remove-unreachable-branch');

    require('../lib/post/transform-static-to-dynamic-property-access');
    require('../lib/post/transform-infinity');
    require('../lib/post/rewrite-boolean');
    require('../lib/post/rewrite-conditional-expression');
    require('../lib/post/omit-parens-in-void-context-iife');
});


}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../lib/esmangle":3,"../lib/pass/concatenate-variable-definition":8,"../lib/pass/dead-code-elimination":9,"../lib/pass/drop-variable-definition":10,"../lib/pass/hoist-variable-to-arguments":12,"../lib/pass/reduce-branch-jump":13,"../lib/pass/reduce-multiple-if-statements":14,"../lib/pass/reduce-sequence-expression":15,"../lib/pass/remove-context-sensitive-expressions":16,"../lib/pass/remove-empty-statement":17,"../lib/pass/remove-side-effect-free-expressions":18,"../lib/pass/remove-unreachable-branch":19,"../lib/pass/remove-unused-label":20,"../lib/pass/remove-wasted-blocks":21,"../lib/pass/reordering-function-declarations":22,"../lib/pass/transform-branch-to-expression":24,"../lib/pass/transform-dynamic-to-static-property-access":25,"../lib/pass/transform-dynamic-to-static-property-definition":26,"../lib/pass/transform-immediate-function-call":27,"../lib/pass/transform-logical-association":28,"../lib/pass/transform-to-compound-assignment":29,"../lib/pass/transform-to-sequence-expression":30,"../lib/pass/transform-typeof-undefined":31,"../lib/pass/tree-based-constant-folding":32,"../lib/post/omit-parens-in-void-context-iife":34,"../lib/post/rewrite-boolean":35,"../lib/post/rewrite-conditional-expression":36,"../lib/post/transform-infinity":37,"../lib/post/transform-static-to-dynamic-property-access":38}]},{},[160]);
/* --------------------------------------------------------------
         EspruinoTools/libs/esprima/escodegen.js
   -------------------------------------------------------------- */
// Generated by CommonJS Everywhere 0.9.7
(function (global) {
  function require(file, parentModule) {
    if ({}.hasOwnProperty.call(require.cache, file))
      return require.cache[file];
    var resolved = require.resolve(file);
    if (!resolved)
      throw new Error('Failed to resolve module ' + file);
    var module$ = {
        id: file,
        require: require,
        filename: file,
        exports: {},
        loaded: false,
        parent: parentModule,
        children: []
      };
    if (parentModule)
      parentModule.children.push(module$);
    var dirname = file.slice(0, file.lastIndexOf('/') + 1);
    require.cache[file] = module$.exports;
    resolved.call(module$.exports, module$, module$.exports, dirname, file);
    module$.loaded = true;
    return require.cache[file] = module$.exports;
  }
  require.modules = {};
  require.cache = {};
  require.resolve = function (file) {
    return {}.hasOwnProperty.call(require.modules, file) ? require.modules[file] : void 0;
  };
  require.define = function (file, fn) {
    require.modules[file] = fn;
  };
  var process = function () {
      var cwd = '/';
      return {
        title: 'browser',
        version: 'v4.2.2',
        browser: true,
        env: {},
        argv: [],
        nextTick: global.setImmediate || function (fn) {
          setTimeout(fn, 0);
        },
        cwd: function () {
          return cwd;
        },
        chdir: function (dir) {
          cwd = dir;
        }
      };
    }();
  require.define('/tools/entry-point.js', function (module, exports, __dirname, __filename) {
    (function () {
      'use strict';
      global.escodegen = require('/escodegen.js', module);
      escodegen.browser = true;
    }());
  });
  require.define('/escodegen.js', function (module, exports, __dirname, __filename) {
    (function () {
      'use strict';
      var Syntax, Precedence, BinaryPrecedence, SourceNode, estraverse, esutils, isArray, base, indent, json, renumber, hexadecimal, quotes, escapeless, newline, space, parentheses, semicolons, safeConcatenation, directive, extra, parse, sourceMap, sourceCode, preserveBlankLines, FORMAT_MINIFY, FORMAT_DEFAULTS;
      estraverse = require('/node_modules/estraverse/estraverse.js', module);
      esutils = require('/node_modules/esutils/lib/utils.js', module);
      Syntax = estraverse.Syntax;
      function isExpression(node) {
        return CodeGenerator.Expression.hasOwnProperty(node.type);
      }
      function isStatement(node) {
        return CodeGenerator.Statement.hasOwnProperty(node.type);
      }
      Precedence = {
        Sequence: 0,
        Yield: 1,
        Await: 1,
        Assignment: 1,
        Conditional: 2,
        ArrowFunction: 2,
        LogicalOR: 3,
        LogicalAND: 4,
        BitwiseOR: 5,
        BitwiseXOR: 6,
        BitwiseAND: 7,
        Equality: 8,
        Relational: 9,
        BitwiseSHIFT: 10,
        Additive: 11,
        Multiplicative: 12,
        Unary: 13,
        Postfix: 14,
        Call: 15,
        New: 16,
        TaggedTemplate: 17,
        Member: 18,
        Primary: 19
      };
      BinaryPrecedence = {
        '||': Precedence.LogicalOR,
        '&&': Precedence.LogicalAND,
        '|': Precedence.BitwiseOR,
        '^': Precedence.BitwiseXOR,
        '&': Precedence.BitwiseAND,
        '==': Precedence.Equality,
        '!=': Precedence.Equality,
        '===': Precedence.Equality,
        '!==': Precedence.Equality,
        'is': Precedence.Equality,
        'isnt': Precedence.Equality,
        '<': Precedence.Relational,
        '>': Precedence.Relational,
        '<=': Precedence.Relational,
        '>=': Precedence.Relational,
        'in': Precedence.Relational,
        'instanceof': Precedence.Relational,
        '<<': Precedence.BitwiseSHIFT,
        '>>': Precedence.BitwiseSHIFT,
        '>>>': Precedence.BitwiseSHIFT,
        '+': Precedence.Additive,
        '-': Precedence.Additive,
        '*': Precedence.Multiplicative,
        '%': Precedence.Multiplicative,
        '/': Precedence.Multiplicative
      };
      var F_ALLOW_IN = 1, F_ALLOW_CALL = 1 << 1, F_ALLOW_UNPARATH_NEW = 1 << 2, F_FUNC_BODY = 1 << 3, F_DIRECTIVE_CTX = 1 << 4, F_SEMICOLON_OPT = 1 << 5;
      var E_FTT = F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW, E_TTF = F_ALLOW_IN | F_ALLOW_CALL, E_TTT = F_ALLOW_IN | F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW, E_TFF = F_ALLOW_IN, E_FFT = F_ALLOW_UNPARATH_NEW, E_TFT = F_ALLOW_IN | F_ALLOW_UNPARATH_NEW;
      var S_TFFF = F_ALLOW_IN, S_TFFT = F_ALLOW_IN | F_SEMICOLON_OPT, S_FFFF = 0, S_TFTF = F_ALLOW_IN | F_DIRECTIVE_CTX, S_TTFF = F_ALLOW_IN | F_FUNC_BODY;
      function getDefaultOptions() {
        return {
          indent: null,
          base: null,
          parse: null,
          comment: false,
          format: {
            indent: {
              style: '    ',
              base: 0,
              adjustMultilineComment: false
            },
            newline: '\n',
            space: ' ',
            json: false,
            renumber: false,
            hexadecimal: false,
            quotes: 'single',
            escapeless: false,
            compact: false,
            parentheses: true,
            semicolons: true,
            safeConcatenation: false,
            preserveBlankLines: false
          },
          moz: {
            comprehensionExpressionStartsWithAssignment: false,
            starlessGenerator: false
          },
          sourceMap: null,
          sourceMapRoot: null,
          sourceMapWithCode: false,
          directive: false,
          raw: true,
          verbatim: null,
          sourceCode: null
        };
      }
      function stringRepeat(str, num) {
        var result = '';
        for (num |= 0; num > 0; num >>>= 1, str += str) {
          if (num & 1) {
            result += str;
          }
        }
        return result;
      }
      isArray = Array.isArray;
      if (!isArray) {
        isArray = function isArray(array) {
          return Object.prototype.toString.call(array) === '[object Array]';
        };
      }
      function hasLineTerminator(str) {
        return /[\r\n]/g.test(str);
      }
      function endsWithLineTerminator(str) {
        var len = str.length;
        return len && esutils.code.isLineTerminator(str.charCodeAt(len - 1));
      }
      function merge(target, override) {
        var key;
        for (key in override) {
          if (override.hasOwnProperty(key)) {
            target[key] = override[key];
          }
        }
        return target;
      }
      function updateDeeply(target, override) {
        var key, val;
        function isHashObject(target) {
          return typeof target === 'object' && target instanceof Object && !(target instanceof RegExp);
        }
        for (key in override) {
          if (override.hasOwnProperty(key)) {
            val = override[key];
            if (isHashObject(val)) {
              if (isHashObject(target[key])) {
                updateDeeply(target[key], val);
              } else {
                target[key] = updateDeeply({}, val);
              }
            } else {
              target[key] = val;
            }
          }
        }
        return target;
      }
      function generateNumber(value) {
        var result, point, temp, exponent, pos;
        if (value !== value) {
          throw new Error('Numeric literal whose value is NaN');
        }
        if (value < 0 || value === 0 && 1 / value < 0) {
          throw new Error('Numeric literal whose value is negative');
        }
        if (value === 1 / 0) {
          return json ? 'null' : renumber ? '1e400' : '1e+400';
        }
        result = '' + value;
        if (!renumber || result.length < 3) {
          return result;
        }
        point = result.indexOf('.');
        if (!json && result.charCodeAt(0) === 48 && point === 1) {
          point = 0;
          result = result.slice(1);
        }
        temp = result;
        result = result.replace('e+', 'e');
        exponent = 0;
        if ((pos = temp.indexOf('e')) > 0) {
          exponent = +temp.slice(pos + 1);
          temp = temp.slice(0, pos);
        }
        if (point >= 0) {
          exponent -= temp.length - point - 1;
          temp = +(temp.slice(0, point) + temp.slice(point + 1)) + '';
        }
        pos = 0;
        while (temp.charCodeAt(temp.length + pos - 1) === 48) {
          --pos;
        }
        if (pos !== 0) {
          exponent -= pos;
          temp = temp.slice(0, pos);
        }
        if (exponent !== 0) {
          temp += 'e' + exponent;
        }
        if ((temp.length < result.length || hexadecimal && value > 1e12 && Math.floor(value) === value && (temp = '0x' + value.toString(16)).length < result.length) && +temp === value) {
          result = temp;
        }
        return result;
      }
      function escapeRegExpCharacter(ch, previousIsBackslash) {
        if ((ch & ~1) === 8232) {
          return (previousIsBackslash ? 'u' : '\\u') + (ch === 8232 ? '2028' : '2029');
        } else if (ch === 10 || ch === 13) {
          return (previousIsBackslash ? '' : '\\') + (ch === 10 ? 'n' : 'r');
        }
        return String.fromCharCode(ch);
      }
      function generateRegExp(reg) {
        var match, result, flags, i, iz, ch, characterInBrack, previousIsBackslash;
        result = reg.toString();
        if (reg.source) {
          match = result.match(/\/([^\/]*)$/);
          if (!match) {
            return result;
          }
          flags = match[1];
          result = '';
          characterInBrack = false;
          previousIsBackslash = false;
          for (i = 0, iz = reg.source.length; i < iz; ++i) {
            ch = reg.source.charCodeAt(i);
            if (!previousIsBackslash) {
              if (characterInBrack) {
                if (ch === 93) {
                  characterInBrack = false;
                }
              } else {
                if (ch === 47) {
                  result += '\\';
                } else if (ch === 91) {
                  characterInBrack = true;
                }
              }
              result += escapeRegExpCharacter(ch, previousIsBackslash);
              previousIsBackslash = ch === 92;
            } else {
              result += escapeRegExpCharacter(ch, previousIsBackslash);
              previousIsBackslash = false;
            }
          }
          return '/' + result + '/' + flags;
        }
        return result;
      }
      function escapeAllowedCharacter(code, next) {
        var hex;
        if (code === 8) {
          return '\\b';
        }
        if (code === 12) {
          return '\\f';
        }
        if (code === 9) {
          return '\\t';
        }
        hex = code.toString(16).toUpperCase();
        if (json || code > 255) {
          return '\\u' + '0000'.slice(hex.length) + hex;
        } else if (code === 0 && !esutils.code.isDecimalDigit(next)) {
          return '\\0';
        } else if (code === 11) {
          return '\\x0B';
        } else {
          return '\\x' + '00'.slice(hex.length) + hex;
        }
      }
      function escapeDisallowedCharacter(code) {
        if (code === 92) {
          return '\\\\';
        }
        if (code === 10) {
          return '\\n';
        }
        if (code === 13) {
          return '\\r';
        }
        if (code === 8232) {
          return '\\u2028';
        }
        if (code === 8233) {
          return '\\u2029';
        }
        throw new Error('Incorrectly classified character');
      }
      function escapeDirective(str) {
        var i, iz, code, quote;
        quote = quotes === 'double' ? '"' : "'";
        for (i = 0, iz = str.length; i < iz; ++i) {
          code = str.charCodeAt(i);
          if (code === 39) {
            quote = '"';
            break;
          } else if (code === 34) {
            quote = "'";
            break;
          } else if (code === 92) {
            ++i;
          }
        }
        return quote + str + quote;
      }
      function escapeString(str) {
        var result = '', i, len, code, singleQuotes = 0, doubleQuotes = 0, single, quote;
        for (i = 0, len = str.length; i < len; ++i) {
          code = str.charCodeAt(i);
          if (code === 39) {
            ++singleQuotes;
          } else if (code === 34) {
            ++doubleQuotes;
          } else if (code === 47 && json) {
            result += '\\';
          } else if (esutils.code.isLineTerminator(code) || code === 92) {
            result += escapeDisallowedCharacter(code);
            continue;
          } else if (!esutils.code.isIdentifierPartES5(code) && (json && code < 32 || !json && !escapeless && (code < 32 || code > 126))) {
            result += escapeAllowedCharacter(code, str.charCodeAt(i + 1));
            continue;
          }
          result += String.fromCharCode(code);
        }
        single = !(quotes === 'double' || quotes === 'auto' && doubleQuotes < singleQuotes);
        quote = single ? "'" : '"';
        if (!(single ? singleQuotes : doubleQuotes)) {
          return quote + result + quote;
        }
        str = result;
        result = quote;
        for (i = 0, len = str.length; i < len; ++i) {
          code = str.charCodeAt(i);
          if (code === 39 && single || code === 34 && !single) {
            result += '\\';
          }
          result += String.fromCharCode(code);
        }
        return result + quote;
      }
      function flattenToString(arr) {
        var i, iz, elem, result = '';
        for (i = 0, iz = arr.length; i < iz; ++i) {
          elem = arr[i];
          result += isArray(elem) ? flattenToString(elem) : elem;
        }
        return result;
      }
      function toSourceNodeWhenNeeded(generated, node) {
        if (!sourceMap) {
          if (isArray(generated)) {
            return flattenToString(generated);
          } else {
            return generated;
          }
        }
        if (node == null) {
          if (generated instanceof SourceNode) {
            return generated;
          } else {
            node = {};
          }
        }
        if (node.loc == null) {
          return new SourceNode(null, null, sourceMap, generated, node.name || null);
        }
        return new SourceNode(node.loc.start.line, node.loc.start.column, sourceMap === true ? node.loc.source || null : sourceMap, generated, node.name || null);
      }
      function noEmptySpace() {
        return space ? space : ' ';
      }
      function join(left, right) {
        var leftSource, rightSource, leftCharCode, rightCharCode;
        leftSource = toSourceNodeWhenNeeded(left).toString();
        if (leftSource.length === 0) {
          return [right];
        }
        rightSource = toSourceNodeWhenNeeded(right).toString();
        if (rightSource.length === 0) {
          return [left];
        }
        leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
        rightCharCode = rightSource.charCodeAt(0);
        if ((leftCharCode === 43 || leftCharCode === 45) && leftCharCode === rightCharCode || esutils.code.isIdentifierPartES5(leftCharCode) && esutils.code.isIdentifierPartES5(rightCharCode) || leftCharCode === 47 && rightCharCode === 105) {
          return [
            left,
            noEmptySpace(),
            right
          ];
        } else if (esutils.code.isWhiteSpace(leftCharCode) || esutils.code.isLineTerminator(leftCharCode) || esutils.code.isWhiteSpace(rightCharCode) || esutils.code.isLineTerminator(rightCharCode)) {
          return [
            left,
            right
          ];
        }
        return [
          left,
          space,
          right
        ];
      }
      function addIndent(stmt) {
        return [
          base,
          stmt
        ];
      }
      function withIndent(fn) {
        var previousBase;
        previousBase = base;
        base += indent;
        fn(base);
        base = previousBase;
      }
      function calculateSpaces(str) {
        var i;
        for (i = str.length - 1; i >= 0; --i) {
          if (esutils.code.isLineTerminator(str.charCodeAt(i))) {
            break;
          }
        }
        return str.length - 1 - i;
      }
      function adjustMultilineComment(value, specialBase) {
        var array, i, len, line, j, spaces, previousBase, sn;
        array = value.split(/\r\n|[\r\n]/);
        spaces = Number.MAX_VALUE;
        for (i = 1, len = array.length; i < len; ++i) {
          line = array[i];
          j = 0;
          while (j < line.length && esutils.code.isWhiteSpace(line.charCodeAt(j))) {
            ++j;
          }
          if (spaces > j) {
            spaces = j;
          }
        }
        if (typeof specialBase !== 'undefined') {
          previousBase = base;
          if (array[1][spaces] === '*') {
            specialBase += ' ';
          }
          base = specialBase;
        } else {
          if (spaces & 1) {
            --spaces;
          }
          previousBase = base;
        }
        for (i = 1, len = array.length; i < len; ++i) {
          sn = toSourceNodeWhenNeeded(addIndent(array[i].slice(spaces)));
          array[i] = sourceMap ? sn.join('') : sn;
        }
        base = previousBase;
        return array.join('\n');
      }
      function generateComment(comment, specialBase) {
        if (comment.type === 'Line') {
          if (endsWithLineTerminator(comment.value)) {
            return '//' + comment.value;
          } else {
            var result = '//' + comment.value;
            if (!preserveBlankLines) {
              result += '\n';
            }
            return result;
          }
        }
        if (extra.format.indent.adjustMultilineComment && /[\n\r]/.test(comment.value)) {
          return adjustMultilineComment('/*' + comment.value + '*/', specialBase);
        }
        return '/*' + comment.value + '*/';
      }
      function addComments(stmt, result) {
        var i, len, comment, save, tailingToStatement, specialBase, fragment, extRange, range, prevRange, prefix, infix, suffix, count;
        if (stmt.leadingComments && stmt.leadingComments.length > 0) {
          save = result;
          if (preserveBlankLines) {
            comment = stmt.leadingComments[0];
            result = [];
            extRange = comment.extendedRange;
            range = comment.range;
            prefix = sourceCode.substring(extRange[0], range[0]);
            count = (prefix.match(/\n/g) || []).length;
            if (count > 0) {
              result.push(stringRepeat('\n', count));
              result.push(addIndent(generateComment(comment)));
            } else {
              result.push(prefix);
              result.push(generateComment(comment));
            }
            prevRange = range;
            for (i = 1, len = stmt.leadingComments.length; i < len; i++) {
              comment = stmt.leadingComments[i];
              range = comment.range;
              infix = sourceCode.substring(prevRange[1], range[0]);
              count = (infix.match(/\n/g) || []).length;
              result.push(stringRepeat('\n', count));
              result.push(addIndent(generateComment(comment)));
              prevRange = range;
            }
            suffix = sourceCode.substring(range[1], extRange[1]);
            count = (suffix.match(/\n/g) || []).length;
            result.push(stringRepeat('\n', count));
          } else {
            comment = stmt.leadingComments[0];
            result = [];
            if (safeConcatenation && stmt.type === Syntax.Program && stmt.body.length === 0) {
              result.push('\n');
            }
            result.push(generateComment(comment));
            if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
              result.push('\n');
            }
            for (i = 1, len = stmt.leadingComments.length; i < len; ++i) {
              comment = stmt.leadingComments[i];
              fragment = [generateComment(comment)];
              if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                fragment.push('\n');
              }
              result.push(addIndent(fragment));
            }
          }
          result.push(addIndent(save));
        }
        if (stmt.trailingComments) {
          if (preserveBlankLines) {
            comment = stmt.trailingComments[0];
            extRange = comment.extendedRange;
            range = comment.range;
            prefix = sourceCode.substring(extRange[0], range[0]);
            count = (prefix.match(/\n/g) || []).length;
            if (count > 0) {
              result.push(stringRepeat('\n', count));
              result.push(addIndent(generateComment(comment)));
            } else {
              result.push(prefix);
              result.push(generateComment(comment));
            }
          } else {
            tailingToStatement = !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
            specialBase = stringRepeat(' ', calculateSpaces(toSourceNodeWhenNeeded([
              base,
              result,
              indent
            ]).toString()));
            for (i = 0, len = stmt.trailingComments.length; i < len; ++i) {
              comment = stmt.trailingComments[i];
              if (tailingToStatement) {
                if (i === 0) {
                  result = [
                    result,
                    indent
                  ];
                } else {
                  result = [
                    result,
                    specialBase
                  ];
                }
                result.push(generateComment(comment, specialBase));
              } else {
                result = [
                  result,
                  addIndent(generateComment(comment))
                ];
              }
              if (i !== len - 1 && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result = [
                  result,
                  '\n'
                ];
              }
            }
          }
        }
        return result;
      }
      function generateBlankLines(start, end, result) {
        var j, newlineCount = 0;
        for (j = start; j < end; j++) {
          if (sourceCode[j] === '\n') {
            newlineCount++;
          }
        }
        for (j = 1; j < newlineCount; j++) {
          result.push(newline);
        }
      }
      function parenthesize(text, current, should) {
        if (current < should) {
          return [
            '(',
            text,
            ')'
          ];
        }
        return text;
      }
      function generateVerbatimString(string) {
        var i, iz, result;
        result = string.split(/\r\n|\n/);
        for (i = 1, iz = result.length; i < iz; i++) {
          result[i] = newline + base + result[i];
        }
        return result;
      }
      function generateVerbatim(expr, precedence) {
        var verbatim, result, prec;
        verbatim = expr[extra.verbatim];
        if (typeof verbatim === 'string') {
          result = parenthesize(generateVerbatimString(verbatim), Precedence.Sequence, precedence);
        } else {
          result = generateVerbatimString(verbatim.content);
          prec = verbatim.precedence != null ? verbatim.precedence : Precedence.Sequence;
          result = parenthesize(result, prec, precedence);
        }
        return toSourceNodeWhenNeeded(result, expr);
      }
      function CodeGenerator() {
      }
      CodeGenerator.prototype.maybeBlock = function (stmt, flags) {
        var result, noLeadingComment, that = this;
        noLeadingComment = !extra.comment || !stmt.leadingComments;
        if (stmt.type === Syntax.BlockStatement && noLeadingComment) {
          return [
            space,
            this.generateStatement(stmt, flags)
          ];
        }
        if (stmt.type === Syntax.EmptyStatement && noLeadingComment) {
          return ';';
        }
        withIndent(function () {
          result = [
            newline,
            addIndent(that.generateStatement(stmt, flags))
          ];
        });
        return result;
      };
      CodeGenerator.prototype.maybeBlockSuffix = function (stmt, result) {
        var ends = endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
        if (stmt.type === Syntax.BlockStatement && (!extra.comment || !stmt.leadingComments) && !ends) {
          return [
            result,
            space
          ];
        }
        if (ends) {
          return [
            result,
            base
          ];
        }
        return [
          result,
          newline,
          base
        ];
      };
      function generateIdentifier(node) {
        return toSourceNodeWhenNeeded(node.name, node);
      }
      function generateAsyncPrefix(node, spaceRequired) {
        return node.async ? 'async' + (spaceRequired ? noEmptySpace() : space) : '';
      }
      function generateStarSuffix(node) {
        var isGenerator = node.generator && !extra.moz.starlessGenerator;
        return isGenerator ? '*' + space : '';
      }
      function generateMethodPrefix(prop) {
        var func = prop.value;
        if (func.async) {
          return generateAsyncPrefix(func, !prop.computed);
        } else {
          return generateStarSuffix(func) ? '*' : '';
        }
      }
      CodeGenerator.prototype.generatePattern = function (node, precedence, flags) {
        if (node.type === Syntax.Identifier) {
          return generateIdentifier(node);
        }
        return this.generateExpression(node, precedence, flags);
      };
      CodeGenerator.prototype.generateFunctionParams = function (node) {
        var i, iz, result, hasDefault;
        hasDefault = false;
        if (node.type === Syntax.ArrowFunctionExpression && !node.rest && (!node.defaults || node.defaults.length === 0) && node.params.length === 1 && node.params[0].type === Syntax.Identifier) {
          result = [
            generateAsyncPrefix(node, true),
            generateIdentifier(node.params[0])
          ];
        } else {
          result = node.type === Syntax.ArrowFunctionExpression ? [generateAsyncPrefix(node, false)] : [];
          result.push('(');
          if (node.defaults) {
            hasDefault = true;
          }
          for (i = 0, iz = node.params.length; i < iz; ++i) {
            if (hasDefault && node.defaults[i]) {
              result.push(this.generateAssignment(node.params[i], node.defaults[i], '=', Precedence.Assignment, E_TTT));
            } else {
              result.push(this.generatePattern(node.params[i], Precedence.Assignment, E_TTT));
            }
            if (i + 1 < iz) {
              result.push(',' + space);
            }
          }
          if (node.rest) {
            if (node.params.length) {
              result.push(',' + space);
            }
            result.push('...');
            result.push(generateIdentifier(node.rest));
          }
          result.push(')');
        }
        return result;
      };
      CodeGenerator.prototype.generateFunctionBody = function (node) {
        var result, expr;
        result = this.generateFunctionParams(node);
        if (node.type === Syntax.ArrowFunctionExpression) {
          result.push(space);
          result.push('=>');
        }
        if (node.expression) {
          result.push(space);
          expr = this.generateExpression(node.body, Precedence.Assignment, E_TTT);
          if (expr.toString().charAt(0) === '{') {
            expr = [
              '(',
              expr,
              ')'
            ];
          }
          result.push(expr);
        } else {
          result.push(this.maybeBlock(node.body, S_TTFF));
        }
        return result;
      };
      CodeGenerator.prototype.generateIterationForStatement = function (operator, stmt, flags) {
        var result = ['for' + space + '('], that = this;
        withIndent(function () {
          if (stmt.left.type === Syntax.VariableDeclaration) {
            withIndent(function () {
              result.push(stmt.left.kind + noEmptySpace());
              result.push(that.generateStatement(stmt.left.declarations[0], S_FFFF));
            });
          } else {
            result.push(that.generateExpression(stmt.left, Precedence.Call, E_TTT));
          }
          result = join(result, operator);
          result = [
            join(result, that.generateExpression(stmt.right, Precedence.Sequence, E_TTT)),
            ')'
          ];
        });
        result.push(this.maybeBlock(stmt.body, flags));
        return result;
      };
      CodeGenerator.prototype.generatePropertyKey = function (expr, computed) {
        var result = [];
        if (computed) {
          result.push('[');
        }
        result.push(this.generateExpression(expr, Precedence.Sequence, E_TTT));
        if (computed) {
          result.push(']');
        }
        return result;
      };
      CodeGenerator.prototype.generateAssignment = function (left, right, operator, precedence, flags) {
        if (Precedence.Assignment < precedence) {
          flags |= F_ALLOW_IN;
        }
        return parenthesize([
          this.generateExpression(left, Precedence.Call, flags),
          space + operator + space,
          this.generateExpression(right, Precedence.Assignment, flags)
        ], Precedence.Assignment, precedence);
      };
      CodeGenerator.prototype.semicolon = function (flags) {
        if (!semicolons && flags & F_SEMICOLON_OPT) {
          return '';
        }
        return ';';
      };
      CodeGenerator.Statement = {
        BlockStatement: function (stmt, flags) {
          var range, content, result = [
              '{',
              newline
            ], that = this;
          withIndent(function () {
            if (stmt.body.length === 0 && preserveBlankLines) {
              range = stmt.range;
              if (range[1] - range[0] > 2) {
                content = sourceCode.substring(range[0] + 1, range[1] - 1);
                if (content[0] === '\n') {
                  result = ['{'];
                }
                result.push(content);
              }
            }
            var i, iz, fragment, bodyFlags;
            bodyFlags = S_TFFF;
            if (flags & F_FUNC_BODY) {
              bodyFlags |= F_DIRECTIVE_CTX;
            }
            for (i = 0, iz = stmt.body.length; i < iz; ++i) {
              if (preserveBlankLines) {
                if (i === 0) {
                  if (stmt.body[0].leadingComments) {
                    range = stmt.body[0].leadingComments[0].extendedRange;
                    content = sourceCode.substring(range[0], range[1]);
                    if (content[0] === '\n') {
                      result = ['{'];
                    }
                  }
                  if (!stmt.body[0].leadingComments) {
                    generateBlankLines(stmt.range[0], stmt.body[0].range[0], result);
                  }
                }
                if (i > 0) {
                  if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) {
                    generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
                  }
                }
              }
              if (i === iz - 1) {
                bodyFlags |= F_SEMICOLON_OPT;
              }
              if (stmt.body[i].leadingComments && preserveBlankLines) {
                fragment = that.generateStatement(stmt.body[i], bodyFlags);
              } else {
                fragment = addIndent(that.generateStatement(stmt.body[i], bodyFlags));
              }
              result.push(fragment);
              if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                if (preserveBlankLines && i < iz - 1) {
                  if (!stmt.body[i + 1].leadingComments) {
                    result.push(newline);
                  }
                } else {
                  result.push(newline);
                }
              }
              if (preserveBlankLines) {
                if (i === iz - 1) {
                  if (!stmt.body[i].trailingComments) {
                    generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
                  }
                }
              }
            }
          });
          result.push(addIndent('}'));
          return result;
        },
        BreakStatement: function (stmt, flags) {
          if (stmt.label) {
            return 'break ' + stmt.label.name + this.semicolon(flags);
          }
          return 'break' + this.semicolon(flags);
        },
        ContinueStatement: function (stmt, flags) {
          if (stmt.label) {
            return 'continue ' + stmt.label.name + this.semicolon(flags);
          }
          return 'continue' + this.semicolon(flags);
        },
        ClassBody: function (stmt, flags) {
          var result = [
              '{',
              newline
            ], that = this;
          withIndent(function (indent) {
            var i, iz;
            for (i = 0, iz = stmt.body.length; i < iz; ++i) {
              result.push(indent);
              result.push(that.generateExpression(stmt.body[i], Precedence.Sequence, E_TTT));
              if (i + 1 < iz) {
                result.push(newline);
              }
            }
          });
          if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
            result.push(newline);
          }
          result.push(base);
          result.push('}');
          return result;
        },
        ClassDeclaration: function (stmt, flags) {
          var result, fragment;
          result = ['class ' + stmt.id.name];
          if (stmt.superClass) {
            fragment = join('extends', this.generateExpression(stmt.superClass, Precedence.Assignment, E_TTT));
            result = join(result, fragment);
          }
          result.push(space);
          result.push(this.generateStatement(stmt.body, S_TFFT));
          return result;
        },
        DirectiveStatement: function (stmt, flags) {
          if (extra.raw && stmt.raw) {
            return stmt.raw + this.semicolon(flags);
          }
          return escapeDirective(stmt.directive) + this.semicolon(flags);
        },
        DoWhileStatement: function (stmt, flags) {
          var result = join('do', this.maybeBlock(stmt.body, S_TFFF));
          result = this.maybeBlockSuffix(stmt.body, result);
          return join(result, [
            'while' + space + '(',
            this.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
            ')' + this.semicolon(flags)
          ]);
        },
        CatchClause: function (stmt, flags) {
          var result, that = this;
          withIndent(function () {
            var guard;
            result = [
              'catch' + space + '(',
              that.generateExpression(stmt.param, Precedence.Sequence, E_TTT),
              ')'
            ];
            if (stmt.guard) {
              guard = that.generateExpression(stmt.guard, Precedence.Sequence, E_TTT);
              result.splice(2, 0, ' if ', guard);
            }
          });
          result.push(this.maybeBlock(stmt.body, S_TFFF));
          return result;
        },
        DebuggerStatement: function (stmt, flags) {
          return 'debugger' + this.semicolon(flags);
        },
        EmptyStatement: function (stmt, flags) {
          return ';';
        },
        ExportDefaultDeclaration: function (stmt, flags) {
          var result = ['export'], bodyFlags;
          bodyFlags = flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF;
          result = join(result, 'default');
          if (isStatement(stmt.declaration)) {
            result = join(result, this.generateStatement(stmt.declaration, bodyFlags));
          } else {
            result = join(result, this.generateExpression(stmt.declaration, Precedence.Assignment, E_TTT) + this.semicolon(flags));
          }
          return result;
        },
        ExportNamedDeclaration: function (stmt, flags) {
          var result = ['export'], bodyFlags, that = this;
          bodyFlags = flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF;
          if (stmt.declaration) {
            return join(result, this.generateStatement(stmt.declaration, bodyFlags));
          }
          if (stmt.specifiers) {
            if (stmt.specifiers.length === 0) {
              result = join(result, '{' + space + '}');
            } else if (stmt.specifiers[0].type === Syntax.ExportBatchSpecifier) {
              result = join(result, this.generateExpression(stmt.specifiers[0], Precedence.Sequence, E_TTT));
            } else {
              result = join(result, '{');
              withIndent(function (indent) {
                var i, iz;
                result.push(newline);
                for (i = 0, iz = stmt.specifiers.length; i < iz; ++i) {
                  result.push(indent);
                  result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
                  if (i + 1 < iz) {
                    result.push(',' + newline);
                  }
                }
              });
              if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
              }
              result.push(base + '}');
            }
            if (stmt.source) {
              result = join(result, [
                'from' + space,
                this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                this.semicolon(flags)
              ]);
            } else {
              result.push(this.semicolon(flags));
            }
          }
          return result;
        },
        ExportAllDeclaration: function (stmt, flags) {
          return [
            'export' + space,
            '*' + space,
            'from' + space,
            this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
            this.semicolon(flags)
          ];
        },
        ExpressionStatement: function (stmt, flags) {
          var result, fragment;
          function isClassPrefixed(fragment) {
            var code;
            if (fragment.slice(0, 5) !== 'class') {
              return false;
            }
            code = fragment.charCodeAt(5);
            return code === 123 || esutils.code.isWhiteSpace(code) || esutils.code.isLineTerminator(code);
          }
          function isFunctionPrefixed(fragment) {
            var code;
            if (fragment.slice(0, 8) !== 'function') {
              return false;
            }
            code = fragment.charCodeAt(8);
            return code === 40 || esutils.code.isWhiteSpace(code) || code === 42 || esutils.code.isLineTerminator(code);
          }
          function isAsyncPrefixed(fragment) {
            var code, i, iz;
            if (fragment.slice(0, 5) !== 'async') {
              return false;
            }
            if (!esutils.code.isWhiteSpace(fragment.charCodeAt(5))) {
              return false;
            }
            for (i = 6, iz = fragment.length; i < iz; ++i) {
              if (!esutils.code.isWhiteSpace(fragment.charCodeAt(i))) {
                break;
              }
            }
            if (i === iz) {
              return false;
            }
            if (fragment.slice(i, i + 8) !== 'function') {
              return false;
            }
            code = fragment.charCodeAt(i + 8);
            return code === 40 || esutils.code.isWhiteSpace(code) || code === 42 || esutils.code.isLineTerminator(code);
          }
          result = [this.generateExpression(stmt.expression, Precedence.Sequence, E_TTT)];
          fragment = toSourceNodeWhenNeeded(result).toString();
          if (fragment.charCodeAt(0) === 123 || isClassPrefixed(fragment) || isFunctionPrefixed(fragment) || isAsyncPrefixed(fragment) || directive && flags & F_DIRECTIVE_CTX && stmt.expression.type === Syntax.Literal && typeof stmt.expression.value === 'string') {
            result = [
              '(',
              result,
              ')' + this.semicolon(flags)
            ];
          } else {
            result.push(this.semicolon(flags));
          }
          return result;
        },
        ImportDeclaration: function (stmt, flags) {
          var result, cursor, that = this;
          if (stmt.specifiers.length === 0) {
            return [
              'import',
              space,
              this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
              this.semicolon(flags)
            ];
          }
          result = ['import'];
          cursor = 0;
          if (stmt.specifiers[cursor].type === Syntax.ImportDefaultSpecifier) {
            result = join(result, [this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)]);
            ++cursor;
          }
          if (stmt.specifiers[cursor]) {
            if (cursor !== 0) {
              result.push(',');
            }
            if (stmt.specifiers[cursor].type === Syntax.ImportNamespaceSpecifier) {
              result = join(result, [
                space,
                this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)
              ]);
            } else {
              result.push(space + '{');
              if (stmt.specifiers.length - cursor === 1) {
                result.push(space);
                result.push(this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT));
                result.push(space + '}' + space);
              } else {
                withIndent(function (indent) {
                  var i, iz;
                  result.push(newline);
                  for (i = cursor, iz = stmt.specifiers.length; i < iz; ++i) {
                    result.push(indent);
                    result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
                    if (i + 1 < iz) {
                      result.push(',' + newline);
                    }
                  }
                });
                if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                  result.push(newline);
                }
                result.push(base + '}' + space);
              }
            }
          }
          result = join(result, [
            'from' + space,
            this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
            this.semicolon(flags)
          ]);
          return result;
        },
        VariableDeclarator: function (stmt, flags) {
          var itemFlags = flags & F_ALLOW_IN ? E_TTT : E_FTT;
          if (stmt.init) {
            return [
              this.generateExpression(stmt.id, Precedence.Assignment, itemFlags),
              space,
              '=',
              space,
              this.generateExpression(stmt.init, Precedence.Assignment, itemFlags)
            ];
          }
          return this.generatePattern(stmt.id, Precedence.Assignment, itemFlags);
        },
        VariableDeclaration: function (stmt, flags) {
          var result, i, iz, node, bodyFlags, that = this;
          result = [stmt.kind];
          bodyFlags = flags & F_ALLOW_IN ? S_TFFF : S_FFFF;
          function block() {
            node = stmt.declarations[0];
            if (extra.comment && node.leadingComments) {
              result.push('\n');
              result.push(addIndent(that.generateStatement(node, bodyFlags)));
            } else {
              result.push(noEmptySpace());
              result.push(that.generateStatement(node, bodyFlags));
            }
            for (i = 1, iz = stmt.declarations.length; i < iz; ++i) {
              node = stmt.declarations[i];
              if (extra.comment && node.leadingComments) {
                result.push(',' + newline);
                result.push(addIndent(that.generateStatement(node, bodyFlags)));
              } else {
                result.push(',' + space);
                result.push(that.generateStatement(node, bodyFlags));
              }
            }
          }
          if (stmt.declarations.length > 1) {
            withIndent(block);
          } else {
            block();
          }
          result.push(this.semicolon(flags));
          return result;
        },
        ThrowStatement: function (stmt, flags) {
          return [
            join('throw', this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)),
            this.semicolon(flags)
          ];
        },
        TryStatement: function (stmt, flags) {
          var result, i, iz, guardedHandlers;
          result = [
            'try',
            this.maybeBlock(stmt.block, S_TFFF)
          ];
          result = this.maybeBlockSuffix(stmt.block, result);
          if (stmt.handlers) {
            for (i = 0, iz = stmt.handlers.length; i < iz; ++i) {
              result = join(result, this.generateStatement(stmt.handlers[i], S_TFFF));
              if (stmt.finalizer || i + 1 !== iz) {
                result = this.maybeBlockSuffix(stmt.handlers[i].body, result);
              }
            }
          } else {
            guardedHandlers = stmt.guardedHandlers || [];
            for (i = 0, iz = guardedHandlers.length; i < iz; ++i) {
              result = join(result, this.generateStatement(guardedHandlers[i], S_TFFF));
              if (stmt.finalizer || i + 1 !== iz) {
                result = this.maybeBlockSuffix(guardedHandlers[i].body, result);
              }
            }
            if (stmt.handler) {
              if (isArray(stmt.handler)) {
                for (i = 0, iz = stmt.handler.length; i < iz; ++i) {
                  result = join(result, this.generateStatement(stmt.handler[i], S_TFFF));
                  if (stmt.finalizer || i + 1 !== iz) {
                    result = this.maybeBlockSuffix(stmt.handler[i].body, result);
                  }
                }
              } else {
                result = join(result, this.generateStatement(stmt.handler, S_TFFF));
                if (stmt.finalizer) {
                  result = this.maybeBlockSuffix(stmt.handler.body, result);
                }
              }
            }
          }
          if (stmt.finalizer) {
            result = join(result, [
              'finally',
              this.maybeBlock(stmt.finalizer, S_TFFF)
            ]);
          }
          return result;
        },
        SwitchStatement: function (stmt, flags) {
          var result, fragment, i, iz, bodyFlags, that = this;
          withIndent(function () {
            result = [
              'switch' + space + '(',
              that.generateExpression(stmt.discriminant, Precedence.Sequence, E_TTT),
              ')' + space + '{' + newline
            ];
          });
          if (stmt.cases) {
            bodyFlags = S_TFFF;
            for (i = 0, iz = stmt.cases.length; i < iz; ++i) {
              if (i === iz - 1) {
                bodyFlags |= F_SEMICOLON_OPT;
              }
              fragment = addIndent(this.generateStatement(stmt.cases[i], bodyFlags));
              result.push(fragment);
              if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                result.push(newline);
              }
            }
          }
          result.push(addIndent('}'));
          return result;
        },
        SwitchCase: function (stmt, flags) {
          var result, fragment, i, iz, bodyFlags, that = this;
          withIndent(function () {
            if (stmt.test) {
              result = [
                join('case', that.generateExpression(stmt.test, Precedence.Sequence, E_TTT)),
                ':'
              ];
            } else {
              result = ['default:'];
            }
            i = 0;
            iz = stmt.consequent.length;
            if (iz && stmt.consequent[0].type === Syntax.BlockStatement) {
              fragment = that.maybeBlock(stmt.consequent[0], S_TFFF);
              result.push(fragment);
              i = 1;
            }
            if (i !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
              result.push(newline);
            }
            bodyFlags = S_TFFF;
            for (; i < iz; ++i) {
              if (i === iz - 1 && flags & F_SEMICOLON_OPT) {
                bodyFlags |= F_SEMICOLON_OPT;
              }
              fragment = addIndent(that.generateStatement(stmt.consequent[i], bodyFlags));
              result.push(fragment);
              if (i + 1 !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                result.push(newline);
              }
            }
          });
          return result;
        },
        IfStatement: function (stmt, flags) {
          var result, bodyFlags, semicolonOptional, that = this;
          withIndent(function () {
            result = [
              'if' + space + '(',
              that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
              ')'
            ];
          });
          semicolonOptional = flags & F_SEMICOLON_OPT;
          bodyFlags = S_TFFF;
          if (semicolonOptional) {
            bodyFlags |= F_SEMICOLON_OPT;
          }
          if (stmt.alternate) {
            result.push(this.maybeBlock(stmt.consequent, S_TFFF));
            result = this.maybeBlockSuffix(stmt.consequent, result);
            if (stmt.alternate.type === Syntax.IfStatement) {
              result = join(result, [
                'else ',
                this.generateStatement(stmt.alternate, bodyFlags)
              ]);
            } else {
              result = join(result, join('else', this.maybeBlock(stmt.alternate, bodyFlags)));
            }
          } else {
            result.push(this.maybeBlock(stmt.consequent, bodyFlags));
          }
          return result;
        },
        ForStatement: function (stmt, flags) {
          var result, that = this;
          withIndent(function () {
            result = ['for' + space + '('];
            if (stmt.init) {
              if (stmt.init.type === Syntax.VariableDeclaration) {
                result.push(that.generateStatement(stmt.init, S_FFFF));
              } else {
                result.push(that.generateExpression(stmt.init, Precedence.Sequence, E_FTT));
                result.push(';');
              }
            } else {
              result.push(';');
            }
            if (stmt.test) {
              result.push(space);
              result.push(that.generateExpression(stmt.test, Precedence.Sequence, E_TTT));
              result.push(';');
            } else {
              result.push(';');
            }
            if (stmt.update) {
              result.push(space);
              result.push(that.generateExpression(stmt.update, Precedence.Sequence, E_TTT));
              result.push(')');
            } else {
              result.push(')');
            }
          });
          result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
          return result;
        },
        ForInStatement: function (stmt, flags) {
          return this.generateIterationForStatement('in', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
        },
        ForOfStatement: function (stmt, flags) {
          return this.generateIterationForStatement('of', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
        },
        LabeledStatement: function (stmt, flags) {
          return [
            stmt.label.name + ':',
            this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF)
          ];
        },
        Program: function (stmt, flags) {
          var result, fragment, i, iz, bodyFlags;
          iz = stmt.body.length;
          result = [safeConcatenation && iz > 0 ? '\n' : ''];
          bodyFlags = S_TFTF;
          for (i = 0; i < iz; ++i) {
            if (!safeConcatenation && i === iz - 1) {
              bodyFlags |= F_SEMICOLON_OPT;
            }
            if (preserveBlankLines) {
              if (i === 0) {
                if (!stmt.body[0].leadingComments) {
                  generateBlankLines(stmt.range[0], stmt.body[i].range[0], result);
                }
              }
              if (i > 0) {
                if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) {
                  generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
                }
              }
            }
            fragment = addIndent(this.generateStatement(stmt.body[i], bodyFlags));
            result.push(fragment);
            if (i + 1 < iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
              if (preserveBlankLines) {
                if (!stmt.body[i + 1].leadingComments) {
                  result.push(newline);
                }
              } else {
                result.push(newline);
              }
            }
            if (preserveBlankLines) {
              if (i === iz - 1) {
                if (!stmt.body[i].trailingComments) {
                  generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
                }
              }
            }
          }
          return result;
        },
        FunctionDeclaration: function (stmt, flags) {
          return [
            generateAsyncPrefix(stmt, true),
            'function',
            generateStarSuffix(stmt) || noEmptySpace(),
            stmt.id ? generateIdentifier(stmt.id) : '',
            this.generateFunctionBody(stmt)
          ];
        },
        ReturnStatement: function (stmt, flags) {
          if (stmt.argument) {
            return [
              join('return', this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)),
              this.semicolon(flags)
            ];
          }
          return ['return' + this.semicolon(flags)];
        },
        WhileStatement: function (stmt, flags) {
          var result, that = this;
          withIndent(function () {
            result = [
              'while' + space + '(',
              that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
              ')'
            ];
          });
          result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
          return result;
        },
        WithStatement: function (stmt, flags) {
          var result, that = this;
          withIndent(function () {
            result = [
              'with' + space + '(',
              that.generateExpression(stmt.object, Precedence.Sequence, E_TTT),
              ')'
            ];
          });
          result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
          return result;
        }
      };
      merge(CodeGenerator.prototype, CodeGenerator.Statement);
      CodeGenerator.Expression = {
        SequenceExpression: function (expr, precedence, flags) {
          var result, i, iz;
          if (Precedence.Sequence < precedence) {
            flags |= F_ALLOW_IN;
          }
          result = [];
          for (i = 0, iz = expr.expressions.length; i < iz; ++i) {
            result.push(this.generateExpression(expr.expressions[i], Precedence.Assignment, flags));
            if (i + 1 < iz) {
              result.push(',' + space);
            }
          }
          return parenthesize(result, Precedence.Sequence, precedence);
        },
        AssignmentExpression: function (expr, precedence, flags) {
          return this.generateAssignment(expr.left, expr.right, expr.operator, precedence, flags);
        },
        ArrowFunctionExpression: function (expr, precedence, flags) {
          return parenthesize(this.generateFunctionBody(expr), Precedence.ArrowFunction, precedence);
        },
        ConditionalExpression: function (expr, precedence, flags) {
          if (Precedence.Conditional < precedence) {
            flags |= F_ALLOW_IN;
          }
          return parenthesize([
            this.generateExpression(expr.test, Precedence.LogicalOR, flags),
            space + '?' + space,
            this.generateExpression(expr.consequent, Precedence.Assignment, flags),
            space + ':' + space,
            this.generateExpression(expr.alternate, Precedence.Assignment, flags)
          ], Precedence.Conditional, precedence);
        },
        LogicalExpression: function (expr, precedence, flags) {
          return this.BinaryExpression(expr, precedence, flags);
        },
        BinaryExpression: function (expr, precedence, flags) {
          var result, currentPrecedence, fragment, leftSource;
          currentPrecedence = BinaryPrecedence[expr.operator];
          if (currentPrecedence < precedence) {
            flags |= F_ALLOW_IN;
          }
          fragment = this.generateExpression(expr.left, currentPrecedence, flags);
          leftSource = fragment.toString();
          if (leftSource.charCodeAt(leftSource.length - 1) === 47 && esutils.code.isIdentifierPartES5(expr.operator.charCodeAt(0))) {
            result = [
              fragment,
              noEmptySpace(),
              expr.operator
            ];
          } else {
            result = join(fragment, expr.operator);
          }
          fragment = this.generateExpression(expr.right, currentPrecedence + 1, flags);
          if (expr.operator === '/' && fragment.toString().charAt(0) === '/' || expr.operator.slice(-1) === '<' && fragment.toString().slice(0, 3) === '!--') {
            result.push(noEmptySpace());
            result.push(fragment);
          } else {
            result = join(result, fragment);
          }
          if (expr.operator === 'in' && !(flags & F_ALLOW_IN)) {
            return [
              '(',
              result,
              ')'
            ];
          }
          return parenthesize(result, currentPrecedence, precedence);
        },
        CallExpression: function (expr, precedence, flags) {
          var result, i, iz;
          result = [this.generateExpression(expr.callee, Precedence.Call, E_TTF)];
          result.push('(');
          for (i = 0, iz = expr['arguments'].length; i < iz; ++i) {
            result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
            if (i + 1 < iz) {
              result.push(',' + space);
            }
          }
          result.push(')');
          if (!(flags & F_ALLOW_CALL)) {
            return [
              '(',
              result,
              ')'
            ];
          }
          return parenthesize(result, Precedence.Call, precedence);
        },
        NewExpression: function (expr, precedence, flags) {
          var result, length, i, iz, itemFlags;
          length = expr['arguments'].length;
          itemFlags = flags & F_ALLOW_UNPARATH_NEW && !parentheses && length === 0 ? E_TFT : E_TFF;
          result = join('new', this.generateExpression(expr.callee, Precedence.New, itemFlags));
          if (!(flags & F_ALLOW_UNPARATH_NEW) || parentheses || length > 0) {
            result.push('(');
            for (i = 0, iz = length; i < iz; ++i) {
              result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
              if (i + 1 < iz) {
                result.push(',' + space);
              }
            }
            result.push(')');
          }
          return parenthesize(result, Precedence.New, precedence);
        },
        MemberExpression: function (expr, precedence, flags) {
          var result, fragment;
          result = [this.generateExpression(expr.object, Precedence.Call, flags & F_ALLOW_CALL ? E_TTF : E_TFF)];
          if (expr.computed) {
            result.push('[');
            result.push(this.generateExpression(expr.property, Precedence.Sequence, flags & F_ALLOW_CALL ? E_TTT : E_TFT));
            result.push(']');
          } else {
            if (expr.object.type === Syntax.Literal && typeof expr.object.value === 'number') {
              fragment = toSourceNodeWhenNeeded(result).toString();
              if (fragment.indexOf('.') < 0 && !/[eExX]/.test(fragment) && esutils.code.isDecimalDigit(fragment.charCodeAt(fragment.length - 1)) && !(fragment.length >= 2 && fragment.charCodeAt(0) === 48)) {
                result.push('.');
              }
            }
            result.push('.');
            result.push(generateIdentifier(expr.property));
          }
          return parenthesize(result, Precedence.Member, precedence);
        },
        MetaProperty: function (expr, precedence, flags) {
          var result;
          result = [];
          result.push(expr.meta);
          result.push('.');
          result.push(expr.property);
          return parenthesize(result, Precedence.Member, precedence);
        },
        UnaryExpression: function (expr, precedence, flags) {
          var result, fragment, rightCharCode, leftSource, leftCharCode;
          fragment = this.generateExpression(expr.argument, Precedence.Unary, E_TTT);
          if (space === '') {
            result = join(expr.operator, fragment);
          } else {
            result = [expr.operator];
            if (expr.operator.length > 2) {
              result = join(result, fragment);
            } else {
              leftSource = toSourceNodeWhenNeeded(result).toString();
              leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
              rightCharCode = fragment.toString().charCodeAt(0);
              if ((leftCharCode === 43 || leftCharCode === 45) && leftCharCode === rightCharCode || esutils.code.isIdentifierPartES5(leftCharCode) && esutils.code.isIdentifierPartES5(rightCharCode)) {
                result.push(noEmptySpace());
                result.push(fragment);
              } else {
                result.push(fragment);
              }
            }
          }
          return parenthesize(result, Precedence.Unary, precedence);
        },
        YieldExpression: function (expr, precedence, flags) {
          var result;
          if (expr.delegate) {
            result = 'yield*';
          } else {
            result = 'yield';
          }
          if (expr.argument) {
            result = join(result, this.generateExpression(expr.argument, Precedence.Yield, E_TTT));
          }
          return parenthesize(result, Precedence.Yield, precedence);
        },
        AwaitExpression: function (expr, precedence, flags) {
          var result = join(expr.all ? 'await*' : 'await', this.generateExpression(expr.argument, Precedence.Await, E_TTT));
          return parenthesize(result, Precedence.Await, precedence);
        },
        UpdateExpression: function (expr, precedence, flags) {
          if (expr.prefix) {
            return parenthesize([
              expr.operator,
              this.generateExpression(expr.argument, Precedence.Unary, E_TTT)
            ], Precedence.Unary, precedence);
          }
          return parenthesize([
            this.generateExpression(expr.argument, Precedence.Postfix, E_TTT),
            expr.operator
          ], Precedence.Postfix, precedence);
        },
        FunctionExpression: function (expr, precedence, flags) {
          var result = [
              generateAsyncPrefix(expr, true),
              'function'
            ];
          if (expr.id) {
            result.push(generateStarSuffix(expr) || noEmptySpace());
            result.push(generateIdentifier(expr.id));
          } else {
            result.push(generateStarSuffix(expr) || space);
          }
          result.push(this.generateFunctionBody(expr));
          return result;
        },
        ArrayPattern: function (expr, precedence, flags) {
          return this.ArrayExpression(expr, precedence, flags, true);
        },
        ArrayExpression: function (expr, precedence, flags, isPattern) {
          var result, multiline, that = this;
          if (!expr.elements.length) {
            return '[]';
          }
          multiline = isPattern ? false : expr.elements.length > 1;
          result = [
            '[',
            multiline ? newline : ''
          ];
          withIndent(function (indent) {
            var i, iz;
            for (i = 0, iz = expr.elements.length; i < iz; ++i) {
              if (!expr.elements[i]) {
                if (multiline) {
                  result.push(indent);
                }
                if (i + 1 === iz) {
                  result.push(',');
                }
              } else {
                result.push(multiline ? indent : '');
                result.push(that.generateExpression(expr.elements[i], Precedence.Assignment, E_TTT));
              }
              if (i + 1 < iz) {
                result.push(',' + (multiline ? newline : space));
              }
            }
          });
          if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
            result.push(newline);
          }
          result.push(multiline ? base : '');
          result.push(']');
          return result;
        },
        RestElement: function (expr, precedence, flags) {
          return '...' + this.generatePattern(expr.argument);
        },
        ClassExpression: function (expr, precedence, flags) {
          var result, fragment;
          result = ['class'];
          if (expr.id) {
            result = join(result, this.generateExpression(expr.id, Precedence.Sequence, E_TTT));
          }
          if (expr.superClass) {
            fragment = join('extends', this.generateExpression(expr.superClass, Precedence.Assignment, E_TTT));
            result = join(result, fragment);
          }
          result.push(space);
          result.push(this.generateStatement(expr.body, S_TFFT));
          return result;
        },
        MethodDefinition: function (expr, precedence, flags) {
          var result, fragment;
          if (expr['static']) {
            result = ['static' + space];
          } else {
            result = [];
          }
          if (expr.kind === 'get' || expr.kind === 'set') {
            fragment = [
              join(expr.kind, this.generatePropertyKey(expr.key, expr.computed)),
              this.generateFunctionBody(expr.value)
            ];
          } else {
            fragment = [
              generateMethodPrefix(expr),
              this.generatePropertyKey(expr.key, expr.computed),
              this.generateFunctionBody(expr.value)
            ];
          }
          return join(result, fragment);
        },
        Property: function (expr, precedence, flags) {
          if (expr.kind === 'get' || expr.kind === 'set') {
            return [
              expr.kind,
              noEmptySpace(),
              this.generatePropertyKey(expr.key, expr.computed),
              this.generateFunctionBody(expr.value)
            ];
          }
          if (expr.shorthand) {
            return this.generatePropertyKey(expr.key, expr.computed);
          }
          if (expr.method) {
            return [
              generateMethodPrefix(expr),
              this.generatePropertyKey(expr.key, expr.computed),
              this.generateFunctionBody(expr.value)
            ];
          }
          return [
            this.generatePropertyKey(expr.key, expr.computed),
            ':' + space,
            this.generateExpression(expr.value, Precedence.Assignment, E_TTT)
          ];
        },
        ObjectExpression: function (expr, precedence, flags) {
          var multiline, result, fragment, that = this;
          if (!expr.properties.length) {
            return '{}';
          }
          multiline = expr.properties.length > 1;
          withIndent(function () {
            fragment = that.generateExpression(expr.properties[0], Precedence.Sequence, E_TTT);
          });
          if (!multiline) {
            if (!hasLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
              return [
                '{',
                space,
                fragment,
                space,
                '}'
              ];
            }
          }
          withIndent(function (indent) {
            var i, iz;
            result = [
              '{',
              newline,
              indent,
              fragment
            ];
            if (multiline) {
              result.push(',' + newline);
              for (i = 1, iz = expr.properties.length; i < iz; ++i) {
                result.push(indent);
                result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
                if (i + 1 < iz) {
                  result.push(',' + newline);
                }
              }
            }
          });
          if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
            result.push(newline);
          }
          result.push(base);
          result.push('}');
          return result;
        },
        AssignmentPattern: function (expr, precedence, flags) {
          return this.generateAssignment(expr.left, expr.right, expr.operator, precedence, flags);
        },
        ObjectPattern: function (expr, precedence, flags) {
          var result, i, iz, multiline, property, that = this;
          if (!expr.properties.length) {
            return '{}';
          }
          multiline = false;
          if (expr.properties.length === 1) {
            property = expr.properties[0];
            if (property.value.type !== Syntax.Identifier) {
              multiline = true;
            }
          } else {
            for (i = 0, iz = expr.properties.length; i < iz; ++i) {
              property = expr.properties[i];
              if (!property.shorthand) {
                multiline = true;
                break;
              }
            }
          }
          result = [
            '{',
            multiline ? newline : ''
          ];
          withIndent(function (indent) {
            var i, iz;
            for (i = 0, iz = expr.properties.length; i < iz; ++i) {
              result.push(multiline ? indent : '');
              result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
              if (i + 1 < iz) {
                result.push(',' + (multiline ? newline : space));
              }
            }
          });
          if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
            result.push(newline);
          }
          result.push(multiline ? base : '');
          result.push('}');
          return result;
        },
        ThisExpression: function (expr, precedence, flags) {
          return 'this';
        },
        Super: function (expr, precedence, flags) {
          return 'super';
        },
        Identifier: function (expr, precedence, flags) {
          return generateIdentifier(expr);
        },
        ImportDefaultSpecifier: function (expr, precedence, flags) {
          return generateIdentifier(expr.id || expr.local);
        },
        ImportNamespaceSpecifier: function (expr, precedence, flags) {
          var result = ['*'];
          var id = expr.id || expr.local;
          if (id) {
            result.push(space + 'as' + noEmptySpace() + generateIdentifier(id));
          }
          return result;
        },
        ImportSpecifier: function (expr, precedence, flags) {
          var imported = expr.imported;
          var result = [imported.name];
          var local = expr.local;
          if (local && local.name !== imported.name) {
            result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(local));
          }
          return result;
        },
        ExportSpecifier: function (expr, precedence, flags) {
          var local = expr.local;
          var result = [local.name];
          var exported = expr.exported;
          if (exported && exported.name !== local.name) {
            result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(exported));
          }
          return result;
        },
        Literal: function (expr, precedence, flags) {
          var raw;
          if (expr.hasOwnProperty('raw') && parse && extra.raw) {
            try {
              raw = parse(expr.raw).body[0].expression;
              if (raw.type === Syntax.Literal) {
                if (raw.value === expr.value) {
                  return expr.raw;
                }
              }
            } catch (e) {
            }
          }
          if (expr.value === null) {
            return 'null';
          }
          if (typeof expr.value === 'string') {
            return escapeString(expr.value);
          }
          if (typeof expr.value === 'number') {
            return generateNumber(expr.value);
          }
          if (typeof expr.value === 'boolean') {
            return expr.value ? 'true' : 'false';
          }
          return generateRegExp(expr.value);
        },
        GeneratorExpression: function (expr, precedence, flags) {
          return this.ComprehensionExpression(expr, precedence, flags);
        },
        ComprehensionExpression: function (expr, precedence, flags) {
          var result, i, iz, fragment, that = this;
          result = expr.type === Syntax.GeneratorExpression ? ['('] : ['['];
          if (extra.moz.comprehensionExpressionStartsWithAssignment) {
            fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);
            result.push(fragment);
          }
          if (expr.blocks) {
            withIndent(function () {
              for (i = 0, iz = expr.blocks.length; i < iz; ++i) {
                fragment = that.generateExpression(expr.blocks[i], Precedence.Sequence, E_TTT);
                if (i > 0 || extra.moz.comprehensionExpressionStartsWithAssignment) {
                  result = join(result, fragment);
                } else {
                  result.push(fragment);
                }
              }
            });
          }
          if (expr.filter) {
            result = join(result, 'if' + space);
            fragment = this.generateExpression(expr.filter, Precedence.Sequence, E_TTT);
            result = join(result, [
              '(',
              fragment,
              ')'
            ]);
          }
          if (!extra.moz.comprehensionExpressionStartsWithAssignment) {
            fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);
            result = join(result, fragment);
          }
          result.push(expr.type === Syntax.GeneratorExpression ? ')' : ']');
          return result;
        },
        ComprehensionBlock: function (expr, precedence, flags) {
          var fragment;
          if (expr.left.type === Syntax.VariableDeclaration) {
            fragment = [
              expr.left.kind,
              noEmptySpace(),
              this.generateStatement(expr.left.declarations[0], S_FFFF)
            ];
          } else {
            fragment = this.generateExpression(expr.left, Precedence.Call, E_TTT);
          }
          fragment = join(fragment, expr.of ? 'of' : 'in');
          fragment = join(fragment, this.generateExpression(expr.right, Precedence.Sequence, E_TTT));
          return [
            'for' + space + '(',
            fragment,
            ')'
          ];
        },
        SpreadElement: function (expr, precedence, flags) {
          return [
            '...',
            this.generateExpression(expr.argument, Precedence.Assignment, E_TTT)
          ];
        },
        TaggedTemplateExpression: function (expr, precedence, flags) {
          var itemFlags = E_TTF;
          if (!(flags & F_ALLOW_CALL)) {
            itemFlags = E_TFF;
          }
          var result = [
              this.generateExpression(expr.tag, Precedence.Call, itemFlags),
              this.generateExpression(expr.quasi, Precedence.Primary, E_FFT)
            ];
          return parenthesize(result, Precedence.TaggedTemplate, precedence);
        },
        TemplateElement: function (expr, precedence, flags) {
          return expr.value.raw;
        },
        TemplateLiteral: function (expr, precedence, flags) {
          var result, i, iz;
          result = ['`'];
          for (i = 0, iz = expr.quasis.length; i < iz; ++i) {
            result.push(this.generateExpression(expr.quasis[i], Precedence.Primary, E_TTT));
            if (i + 1 < iz) {
              result.push('${' + space);
              result.push(this.generateExpression(expr.expressions[i], Precedence.Sequence, E_TTT));
              result.push(space + '}');
            }
          }
          result.push('`');
          return result;
        },
        ModuleSpecifier: function (expr, precedence, flags) {
          return this.Literal(expr, precedence, flags);
        }
      };
      merge(CodeGenerator.prototype, CodeGenerator.Expression);
      CodeGenerator.prototype.generateExpression = function (expr, precedence, flags) {
        var result, type;
        type = expr.type || Syntax.Property;
        if (extra.verbatim && expr.hasOwnProperty(extra.verbatim)) {
          return generateVerbatim(expr, precedence);
        }
        result = this[type](expr, precedence, flags);
        if (extra.comment) {
          result = addComments(expr, result);
        }
        return toSourceNodeWhenNeeded(result, expr);
      };
      CodeGenerator.prototype.generateStatement = function (stmt, flags) {
        var result, fragment;
        result = this[stmt.type](stmt, flags);
        if (extra.comment) {
          result = addComments(stmt, result);
        }
        fragment = toSourceNodeWhenNeeded(result).toString();
        if (stmt.type === Syntax.Program && !safeConcatenation && newline === '' && fragment.charAt(fragment.length - 1) === '\n') {
          result = sourceMap ? toSourceNodeWhenNeeded(result).replaceRight(/\s+$/, '') : fragment.replace(/\s+$/, '');
        }
        return toSourceNodeWhenNeeded(result, stmt);
      };
      function generateInternal(node) {
        var codegen;
        codegen = new CodeGenerator;
        if (isStatement(node)) {
          return codegen.generateStatement(node, S_TFFF);
        }
        if (isExpression(node)) {
          return codegen.generateExpression(node, Precedence.Sequence, E_TTT);
        }
        throw new Error('Unknown node type: ' + node.type);
      }
      function generate(node, options) {
        var defaultOptions = getDefaultOptions(), result, pair;
        if (options != null) {
          if (typeof options.indent === 'string') {
            defaultOptions.format.indent.style = options.indent;
          }
          if (typeof options.base === 'number') {
            defaultOptions.format.indent.base = options.base;
          }
          options = updateDeeply(defaultOptions, options);
          indent = options.format.indent.style;
          if (typeof options.base === 'string') {
            base = options.base;
          } else {
            base = stringRepeat(indent, options.format.indent.base);
          }
        } else {
          options = defaultOptions;
          indent = options.format.indent.style;
          base = stringRepeat(indent, options.format.indent.base);
        }
        json = options.format.json;
        renumber = options.format.renumber;
        hexadecimal = json ? false : options.format.hexadecimal;
        quotes = json ? 'double' : options.format.quotes;
        escapeless = options.format.escapeless;
        newline = options.format.newline;
        space = options.format.space;
        if (options.format.compact) {
          newline = space = indent = base = '';
        }
        parentheses = options.format.parentheses;
        semicolons = options.format.semicolons;
        safeConcatenation = options.format.safeConcatenation;
        directive = options.directive;
        parse = json ? null : options.parse;
        sourceMap = options.sourceMap;
        sourceCode = options.sourceCode;
        preserveBlankLines = options.format.preserveBlankLines && sourceCode !== null;
        extra = options;
        if (sourceMap) {
          if (!exports.browser) {
            SourceNode = require('/node_modules/source-map/lib/source-map.js', module).SourceNode;
          } else {
            SourceNode = global.sourceMap.SourceNode;
          }
        }
        result = generateInternal(node);
        if (!sourceMap) {
          pair = {
            code: result.toString(),
            map: null
          };
          return options.sourceMapWithCode ? pair : pair.code;
        }
        pair = result.toStringWithSourceMap({
          file: options.file,
          sourceRoot: options.sourceMapRoot
        });
        if (options.sourceContent) {
          pair.map.setSourceContent(options.sourceMap, options.sourceContent);
        }
        if (options.sourceMapWithCode) {
          return pair;
        }
        return pair.map.toString();
      }
      FORMAT_MINIFY = {
        indent: {
          style: '',
          base: 0
        },
        renumber: true,
        hexadecimal: true,
        quotes: 'auto',
        escapeless: true,
        compact: true,
        parentheses: false,
        semicolons: false
      };
      FORMAT_DEFAULTS = getDefaultOptions().format;
      exports.version = require('/package.json', module).version;
      exports.generate = generate;
      exports.attachComments = estraverse.attachComments;
      exports.Precedence = updateDeeply({}, Precedence);
      exports.browser = false;
      exports.FORMAT_MINIFY = FORMAT_MINIFY;
      exports.FORMAT_DEFAULTS = FORMAT_DEFAULTS;
    }());
  });
  require.define('/package.json', function (module, exports, __dirname, __filename) {
    module.exports = {
      'name': 'escodegen',
      'description': 'ECMAScript code generator',
      'homepage': 'http://github.com/estools/escodegen',
      'main': 'escodegen.js',
      'bin': {
        'esgenerate': './bin/esgenerate.js',
        'escodegen': './bin/escodegen.js'
      },
      'files': [
        'LICENSE.BSD',
        'LICENSE.source-map',
        'README.md',
        'bin',
        'escodegen.js',
        'package.json'
      ],
      'version': '1.8.0',
      'engines': { 'node': '>=0.12.0' },
      'maintainers': [{
          'name': 'Yusuke Suzuki',
          'email': 'utatane.tea@gmail.com',
          'web': 'http://github.com/Constellation'
        }],
      'repository': {
        'type': 'git',
        'url': 'http://github.com/estools/escodegen.git'
      },
      'dependencies': {
        'estraverse': '^1.9.1',
        'esutils': '^2.0.2',
        'esprima': '^2.7.1',
        'optionator': '^0.8.1'
      },
      'optionalDependencies': { 'source-map': '~0.2.0' },
      'devDependencies': {
        'acorn-6to5': '^0.11.1-25',
        'bluebird': '^2.3.11',
        'bower-registry-client': '^0.2.1',
        'chai': '^1.10.0',
        'commonjs-everywhere': '^0.9.7',
        'gulp': '^3.8.10',
        'gulp-eslint': '^0.2.0',
        'gulp-mocha': '^2.0.0',
        'semver': '^5.1.0'
      },
      'license': 'BSD-2-Clause',
      'scripts': {
        'test': 'gulp travis',
        'unit-test': 'gulp test',
        'lint': 'gulp lint',
        'release': 'node tools/release.js',
        'build-min': './node_modules/.bin/cjsify -ma path: tools/entry-point.js > escodegen.browser.min.js',
        'build': './node_modules/.bin/cjsify -a path: tools/entry-point.js > escodegen.browser.js'
      }
    };
  });
  require.define('/node_modules/source-map/lib/source-map.js', function (module, exports, __dirname, __filename) {
    exports.SourceMapGenerator = require('/node_modules/source-map/lib/source-map/source-map-generator.js', module).SourceMapGenerator;
    exports.SourceMapConsumer = require('/node_modules/source-map/lib/source-map/source-map-consumer.js', module).SourceMapConsumer;
    exports.SourceNode = require('/node_modules/source-map/lib/source-map/source-node.js', module).SourceNode;
  });
  require.define('/node_modules/source-map/lib/source-map/source-node.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      var SourceMapGenerator = require('/node_modules/source-map/lib/source-map/source-map-generator.js', module).SourceMapGenerator;
      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
      var REGEX_NEWLINE = /(\r?\n)/;
      var NEWLINE_CODE = 10;
      var isSourceNode = '$$$isSourceNode$$$';
      function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
        this.children = [];
        this.sourceContents = {};
        this.line = aLine == null ? null : aLine;
        this.column = aColumn == null ? null : aColumn;
        this.source = aSource == null ? null : aSource;
        this.name = aName == null ? null : aName;
        this[isSourceNode] = true;
        if (aChunks != null)
          this.add(aChunks);
      }
      SourceNode.fromStringWithSourceMap = function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
        var node = new SourceNode;
        var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
        var shiftNextLine = function () {
          var lineContents = remainingLines.shift();
          var newLine = remainingLines.shift() || '';
          return lineContents + newLine;
        };
        var lastGeneratedLine = 1, lastGeneratedColumn = 0;
        var lastMapping = null;
        aSourceMapConsumer.eachMapping(function (mapping) {
          if (lastMapping !== null) {
            if (lastGeneratedLine < mapping.generatedLine) {
              var code = '';
              addMappingWithCode(lastMapping, shiftNextLine());
              lastGeneratedLine++;
              lastGeneratedColumn = 0;
            } else {
              var nextLine = remainingLines[0];
              var code = nextLine.substr(0, mapping.generatedColumn - lastGeneratedColumn);
              remainingLines[0] = nextLine.substr(mapping.generatedColumn - lastGeneratedColumn);
              lastGeneratedColumn = mapping.generatedColumn;
              addMappingWithCode(lastMapping, code);
              lastMapping = mapping;
              return;
            }
          }
          while (lastGeneratedLine < mapping.generatedLine) {
            node.add(shiftNextLine());
            lastGeneratedLine++;
          }
          if (lastGeneratedColumn < mapping.generatedColumn) {
            var nextLine = remainingLines[0];
            node.add(nextLine.substr(0, mapping.generatedColumn));
            remainingLines[0] = nextLine.substr(mapping.generatedColumn);
            lastGeneratedColumn = mapping.generatedColumn;
          }
          lastMapping = mapping;
        }, this);
        if (remainingLines.length > 0) {
          if (lastMapping) {
            addMappingWithCode(lastMapping, shiftNextLine());
          }
          node.add(remainingLines.join(''));
        }
        aSourceMapConsumer.sources.forEach(function (sourceFile) {
          var content = aSourceMapConsumer.sourceContentFor(sourceFile);
          if (content != null) {
            if (aRelativePath != null) {
              sourceFile = util.join(aRelativePath, sourceFile);
            }
            node.setSourceContent(sourceFile, content);
          }
        });
        return node;
        function addMappingWithCode(mapping, code) {
          if (mapping === null || mapping.source === undefined) {
            node.add(code);
          } else {
            var source = aRelativePath ? util.join(aRelativePath, mapping.source) : mapping.source;
            node.add(new SourceNode(mapping.originalLine, mapping.originalColumn, source, code, mapping.name));
          }
        }
      };
      SourceNode.prototype.add = function SourceNode_add(aChunk) {
        if (Array.isArray(aChunk)) {
          aChunk.forEach(function (chunk) {
            this.add(chunk);
          }, this);
        } else if (aChunk[isSourceNode] || typeof aChunk === 'string') {
          if (aChunk) {
            this.children.push(aChunk);
          }
        } else {
          throw new TypeError('Expected a SourceNode, string, or an array of SourceNodes and strings. Got ' + aChunk);
        }
        return this;
      };
      SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
        if (Array.isArray(aChunk)) {
          for (var i = aChunk.length - 1; i >= 0; i--) {
            this.prepend(aChunk[i]);
          }
        } else if (aChunk[isSourceNode] || typeof aChunk === 'string') {
          this.children.unshift(aChunk);
        } else {
          throw new TypeError('Expected a SourceNode, string, or an array of SourceNodes and strings. Got ' + aChunk);
        }
        return this;
      };
      SourceNode.prototype.walk = function SourceNode_walk(aFn) {
        var chunk;
        for (var i = 0, len = this.children.length; i < len; i++) {
          chunk = this.children[i];
          if (chunk[isSourceNode]) {
            chunk.walk(aFn);
          } else {
            if (chunk !== '') {
              aFn(chunk, {
                source: this.source,
                line: this.line,
                column: this.column,
                name: this.name
              });
            }
          }
        }
      };
      SourceNode.prototype.join = function SourceNode_join(aSep) {
        var newChildren;
        var i;
        var len = this.children.length;
        if (len > 0) {
          newChildren = [];
          for (i = 0; i < len - 1; i++) {
            newChildren.push(this.children[i]);
            newChildren.push(aSep);
          }
          newChildren.push(this.children[i]);
          this.children = newChildren;
        }
        return this;
      };
      SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
        var lastChild = this.children[this.children.length - 1];
        if (lastChild[isSourceNode]) {
          lastChild.replaceRight(aPattern, aReplacement);
        } else if (typeof lastChild === 'string') {
          this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
        } else {
          this.children.push(''.replace(aPattern, aReplacement));
        }
        return this;
      };
      SourceNode.prototype.setSourceContent = function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
        this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
      };
      SourceNode.prototype.walkSourceContents = function SourceNode_walkSourceContents(aFn) {
        for (var i = 0, len = this.children.length; i < len; i++) {
          if (this.children[i][isSourceNode]) {
            this.children[i].walkSourceContents(aFn);
          }
        }
        var sources = Object.keys(this.sourceContents);
        for (var i = 0, len = sources.length; i < len; i++) {
          aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
        }
      };
      SourceNode.prototype.toString = function SourceNode_toString() {
        var str = '';
        this.walk(function (chunk) {
          str += chunk;
        });
        return str;
      };
      SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
        var generated = {
            code: '',
            line: 1,
            column: 0
          };
        var map = new SourceMapGenerator(aArgs);
        var sourceMappingActive = false;
        var lastOriginalSource = null;
        var lastOriginalLine = null;
        var lastOriginalColumn = null;
        var lastOriginalName = null;
        this.walk(function (chunk, original) {
          generated.code += chunk;
          if (original.source !== null && original.line !== null && original.column !== null) {
            if (lastOriginalSource !== original.source || lastOriginalLine !== original.line || lastOriginalColumn !== original.column || lastOriginalName !== original.name) {
              map.addMapping({
                source: original.source,
                original: {
                  line: original.line,
                  column: original.column
                },
                generated: {
                  line: generated.line,
                  column: generated.column
                },
                name: original.name
              });
            }
            lastOriginalSource = original.source;
            lastOriginalLine = original.line;
            lastOriginalColumn = original.column;
            lastOriginalName = original.name;
            sourceMappingActive = true;
          } else if (sourceMappingActive) {
            map.addMapping({
              generated: {
                line: generated.line,
                column: generated.column
              }
            });
            lastOriginalSource = null;
            sourceMappingActive = false;
          }
          for (var idx = 0, length = chunk.length; idx < length; idx++) {
            if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
              generated.line++;
              generated.column = 0;
              if (idx + 1 === length) {
                lastOriginalSource = null;
                sourceMappingActive = false;
              } else if (sourceMappingActive) {
                map.addMapping({
                  source: original.source,
                  original: {
                    line: original.line,
                    column: original.column
                  },
                  generated: {
                    line: generated.line,
                    column: generated.column
                  },
                  name: original.name
                });
              }
            } else {
              generated.column++;
            }
          }
        });
        this.walkSourceContents(function (sourceFile, sourceContent) {
          map.setSourceContent(sourceFile, sourceContent);
        });
        return {
          code: generated.code,
          map: map
        };
      };
      exports.SourceNode = SourceNode;
    });
  });
  require.define('/node_modules/source-map/lib/source-map/util.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      function getArg(aArgs, aName, aDefaultValue) {
        if (aName in aArgs) {
          return aArgs[aName];
        } else if (arguments.length === 3) {
          return aDefaultValue;
        } else {
          throw new Error('"' + aName + '" is a required argument.');
        }
      }
      exports.getArg = getArg;
      var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.]*)(?::(\d+))?(\S*)$/;
      var dataUrlRegexp = /^data:.+\,.+$/;
      function urlParse(aUrl) {
        var match = aUrl.match(urlRegexp);
        if (!match) {
          return null;
        }
        return {
          scheme: match[1],
          auth: match[2],
          host: match[3],
          port: match[4],
          path: match[5]
        };
      }
      exports.urlParse = urlParse;
      function urlGenerate(aParsedUrl) {
        var url = '';
        if (aParsedUrl.scheme) {
          url += aParsedUrl.scheme + ':';
        }
        url += '//';
        if (aParsedUrl.auth) {
          url += aParsedUrl.auth + '@';
        }
        if (aParsedUrl.host) {
          url += aParsedUrl.host;
        }
        if (aParsedUrl.port) {
          url += ':' + aParsedUrl.port;
        }
        if (aParsedUrl.path) {
          url += aParsedUrl.path;
        }
        return url;
      }
      exports.urlGenerate = urlGenerate;
      function normalize(aPath) {
        var path = aPath;
        var url = urlParse(aPath);
        if (url) {
          if (!url.path) {
            return aPath;
          }
          path = url.path;
        }
        var isAbsolute = path.charAt(0) === '/';
        var parts = path.split(/\/+/);
        for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
          part = parts[i];
          if (part === '.') {
            parts.splice(i, 1);
          } else if (part === '..') {
            up++;
          } else if (up > 0) {
            if (part === '') {
              parts.splice(i + 1, up);
              up = 0;
            } else {
              parts.splice(i, 2);
              up--;
            }
          }
        }
        path = parts.join('/');
        if (path === '') {
          path = isAbsolute ? '/' : '.';
        }
        if (url) {
          url.path = path;
          return urlGenerate(url);
        }
        return path;
      }
      exports.normalize = normalize;
      function join(aRoot, aPath) {
        if (aRoot === '') {
          aRoot = '.';
        }
        if (aPath === '') {
          aPath = '.';
        }
        var aPathUrl = urlParse(aPath);
        var aRootUrl = urlParse(aRoot);
        if (aRootUrl) {
          aRoot = aRootUrl.path || '/';
        }
        if (aPathUrl && !aPathUrl.scheme) {
          if (aRootUrl) {
            aPathUrl.scheme = aRootUrl.scheme;
          }
          return urlGenerate(aPathUrl);
        }
        if (aPathUrl || aPath.match(dataUrlRegexp)) {
          return aPath;
        }
        if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
          aRootUrl.host = aPath;
          return urlGenerate(aRootUrl);
        }
        var joined = aPath.charAt(0) === '/' ? aPath : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);
        if (aRootUrl) {
          aRootUrl.path = joined;
          return urlGenerate(aRootUrl);
        }
        return joined;
      }
      exports.join = join;
      function relative(aRoot, aPath) {
        if (aRoot === '') {
          aRoot = '.';
        }
        aRoot = aRoot.replace(/\/$/, '');
        var url = urlParse(aRoot);
        if (aPath.charAt(0) == '/' && url && url.path == '/') {
          return aPath.slice(1);
        }
        return aPath.indexOf(aRoot + '/') === 0 ? aPath.substr(aRoot.length + 1) : aPath;
      }
      exports.relative = relative;
      function toSetString(aStr) {
        return '$' + aStr;
      }
      exports.toSetString = toSetString;
      function fromSetString(aStr) {
        return aStr.substr(1);
      }
      exports.fromSetString = fromSetString;
      function strcmp(aStr1, aStr2) {
        var s1 = aStr1 || '';
        var s2 = aStr2 || '';
        return (s1 > s2) - (s1 < s2);
      }
      function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
        var cmp;
        cmp = strcmp(mappingA.source, mappingB.source);
        if (cmp) {
          return cmp;
        }
        cmp = mappingA.originalLine - mappingB.originalLine;
        if (cmp) {
          return cmp;
        }
        cmp = mappingA.originalColumn - mappingB.originalColumn;
        if (cmp || onlyCompareOriginal) {
          return cmp;
        }
        cmp = strcmp(mappingA.name, mappingB.name);
        if (cmp) {
          return cmp;
        }
        cmp = mappingA.generatedLine - mappingB.generatedLine;
        if (cmp) {
          return cmp;
        }
        return mappingA.generatedColumn - mappingB.generatedColumn;
      }
      ;
      exports.compareByOriginalPositions = compareByOriginalPositions;
      function compareByGeneratedPositions(mappingA, mappingB, onlyCompareGenerated) {
        var cmp;
        cmp = mappingA.generatedLine - mappingB.generatedLine;
        if (cmp) {
          return cmp;
        }
        cmp = mappingA.generatedColumn - mappingB.generatedColumn;
        if (cmp || onlyCompareGenerated) {
          return cmp;
        }
        cmp = strcmp(mappingA.source, mappingB.source);
        if (cmp) {
          return cmp;
        }
        cmp = mappingA.originalLine - mappingB.originalLine;
        if (cmp) {
          return cmp;
        }
        cmp = mappingA.originalColumn - mappingB.originalColumn;
        if (cmp) {
          return cmp;
        }
        return strcmp(mappingA.name, mappingB.name);
      }
      ;
      exports.compareByGeneratedPositions = compareByGeneratedPositions;
    });
  });
  require.define('/node_modules/source-map/node_modules/amdefine/amdefine.js', function (module, exports, __dirname, __filename) {
    'use strict';
    function amdefine(module, requireFn) {
      'use strict';
      var defineCache = {}, loaderCache = {}, alreadyCalled = false, path = require('path', module), makeRequire, stringRequire;
      function trimDots(ary) {
        var i, part;
        for (i = 0; ary[i]; i += 1) {
          part = ary[i];
          if (part === '.') {
            ary.splice(i, 1);
            i -= 1;
          } else if (part === '..') {
            if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
              break;
            } else if (i > 0) {
              ary.splice(i - 1, 2);
              i -= 2;
            }
          }
        }
      }
      function normalize(name, baseName) {
        var baseParts;
        if (name && name.charAt(0) === '.') {
          if (baseName) {
            baseParts = baseName.split('/');
            baseParts = baseParts.slice(0, baseParts.length - 1);
            baseParts = baseParts.concat(name.split('/'));
            trimDots(baseParts);
            name = baseParts.join('/');
          }
        }
        return name;
      }
      function makeNormalize(relName) {
        return function (name) {
          return normalize(name, relName);
        };
      }
      function makeLoad(id) {
        function load(value) {
          loaderCache[id] = value;
        }
        load.fromText = function (id, text) {
          throw new Error('amdefine does not implement load.fromText');
        };
        return load;
      }
      makeRequire = function (systemRequire, exports, module, relId) {
        function amdRequire(deps, callback) {
          if (typeof deps === 'string') {
            return stringRequire(systemRequire, exports, module, deps, relId);
          } else {
            deps = deps.map(function (depName) {
              return stringRequire(systemRequire, exports, module, depName, relId);
            });
            if (callback) {
              process.nextTick(function () {
                callback.apply(null, deps);
              });
            }
          }
        }
        amdRequire.toUrl = function (filePath) {
          if (filePath.indexOf('.') === 0) {
            return normalize(filePath, path.dirname(module.filename));
          } else {
            return filePath;
          }
        };
        return amdRequire;
      };
      requireFn = requireFn || function req() {
        return module.require.apply(module, arguments);
      };
      function runFactory(id, deps, factory) {
        var r, e, m, result;
        if (id) {
          e = loaderCache[id] = {};
          m = {
            id: id,
            uri: __filename,
            exports: e
          };
          r = makeRequire(requireFn, e, m, id);
        } else {
          if (alreadyCalled) {
            throw new Error('amdefine with no module ID cannot be called more than once per file.');
          }
          alreadyCalled = true;
          e = module.exports;
          m = module;
          r = makeRequire(requireFn, e, m, module.id);
        }
        if (deps) {
          deps = deps.map(function (depName) {
            return r(depName);
          });
        }
        if (typeof factory === 'function') {
          result = factory.apply(m.exports, deps);
        } else {
          result = factory;
        }
        if (result !== undefined) {
          m.exports = result;
          if (id) {
            loaderCache[id] = m.exports;
          }
        }
      }
      stringRequire = function (systemRequire, exports, module, id, relId) {
        var index = id.indexOf('!'), originalId = id, prefix, plugin;
        if (index === -1) {
          id = normalize(id, relId);
          if (id === 'require') {
            return makeRequire(systemRequire, exports, module, relId);
          } else if (id === 'exports') {
            return exports;
          } else if (id === 'module') {
            return module;
          } else if (loaderCache.hasOwnProperty(id)) {
            return loaderCache[id];
          } else if (defineCache[id]) {
            runFactory.apply(null, defineCache[id]);
            return loaderCache[id];
          } else {
            if (systemRequire) {
              return systemRequire(originalId);
            } else {
              throw new Error('No module with ID: ' + id);
            }
          }
        } else {
          prefix = id.substring(0, index);
          id = id.substring(index + 1, id.length);
          plugin = stringRequire(systemRequire, exports, module, prefix, relId);
          if (plugin.normalize) {
            id = plugin.normalize(id, makeNormalize(relId));
          } else {
            id = normalize(id, relId);
          }
          if (loaderCache[id]) {
            return loaderCache[id];
          } else {
            plugin.load(id, makeRequire(systemRequire, exports, module, relId), makeLoad(id), {});
            return loaderCache[id];
          }
        }
      };
      function define(id, deps, factory) {
        if (Array.isArray(id)) {
          factory = deps;
          deps = id;
          id = undefined;
        } else if (typeof id !== 'string') {
          factory = id;
          id = deps = undefined;
        }
        if (deps && !Array.isArray(deps)) {
          factory = deps;
          deps = undefined;
        }
        if (!deps) {
          deps = [
            'require',
            'exports',
            'module'
          ];
        }
        if (id) {
          defineCache[id] = [
            id,
            deps,
            factory
          ];
        } else {
          runFactory(id, deps, factory);
        }
      }
      define.require = function (id) {
        if (loaderCache[id]) {
          return loaderCache[id];
        }
        if (defineCache[id]) {
          runFactory.apply(null, defineCache[id]);
          return loaderCache[id];
        }
      };
      define.amd = {};
      return define;
    }
    module.exports = amdefine;
  });
  require.define('/node_modules/source-map/lib/source-map/source-map-generator.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      var base64VLQ = require('/node_modules/source-map/lib/source-map/base64-vlq.js', module);
      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
      var ArraySet = require('/node_modules/source-map/lib/source-map/array-set.js', module).ArraySet;
      var MappingList = require('/node_modules/source-map/lib/source-map/mapping-list.js', module).MappingList;
      function SourceMapGenerator(aArgs) {
        if (!aArgs) {
          aArgs = {};
        }
        this._file = util.getArg(aArgs, 'file', null);
        this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
        this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
        this._sources = new ArraySet;
        this._names = new ArraySet;
        this._mappings = new MappingList;
        this._sourcesContents = null;
      }
      SourceMapGenerator.prototype._version = 3;
      SourceMapGenerator.fromSourceMap = function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
        var sourceRoot = aSourceMapConsumer.sourceRoot;
        var generator = new SourceMapGenerator({
            file: aSourceMapConsumer.file,
            sourceRoot: sourceRoot
          });
        aSourceMapConsumer.eachMapping(function (mapping) {
          var newMapping = {
              generated: {
                line: mapping.generatedLine,
                column: mapping.generatedColumn
              }
            };
          if (mapping.source != null) {
            newMapping.source = mapping.source;
            if (sourceRoot != null) {
              newMapping.source = util.relative(sourceRoot, newMapping.source);
            }
            newMapping.original = {
              line: mapping.originalLine,
              column: mapping.originalColumn
            };
            if (mapping.name != null) {
              newMapping.name = mapping.name;
            }
          }
          generator.addMapping(newMapping);
        });
        aSourceMapConsumer.sources.forEach(function (sourceFile) {
          var content = aSourceMapConsumer.sourceContentFor(sourceFile);
          if (content != null) {
            generator.setSourceContent(sourceFile, content);
          }
        });
        return generator;
      };
      SourceMapGenerator.prototype.addMapping = function SourceMapGenerator_addMapping(aArgs) {
        var generated = util.getArg(aArgs, 'generated');
        var original = util.getArg(aArgs, 'original', null);
        var source = util.getArg(aArgs, 'source', null);
        var name = util.getArg(aArgs, 'name', null);
        if (!this._skipValidation) {
          this._validateMapping(generated, original, source, name);
        }
        if (source != null && !this._sources.has(source)) {
          this._sources.add(source);
        }
        if (name != null && !this._names.has(name)) {
          this._names.add(name);
        }
        this._mappings.add({
          generatedLine: generated.line,
          generatedColumn: generated.column,
          originalLine: original != null && original.line,
          originalColumn: original != null && original.column,
          source: source,
          name: name
        });
      };
      SourceMapGenerator.prototype.setSourceContent = function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
        var source = aSourceFile;
        if (this._sourceRoot != null) {
          source = util.relative(this._sourceRoot, source);
        }
        if (aSourceContent != null) {
          if (!this._sourcesContents) {
            this._sourcesContents = {};
          }
          this._sourcesContents[util.toSetString(source)] = aSourceContent;
        } else if (this._sourcesContents) {
          delete this._sourcesContents[util.toSetString(source)];
          if (Object.keys(this._sourcesContents).length === 0) {
            this._sourcesContents = null;
          }
        }
      };
      SourceMapGenerator.prototype.applySourceMap = function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
        var sourceFile = aSourceFile;
        if (aSourceFile == null) {
          if (aSourceMapConsumer.file == null) {
            throw new Error('SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' + 'or the source map\'s "file" property. Both were omitted.');
          }
          sourceFile = aSourceMapConsumer.file;
        }
        var sourceRoot = this._sourceRoot;
        if (sourceRoot != null) {
          sourceFile = util.relative(sourceRoot, sourceFile);
        }
        var newSources = new ArraySet;
        var newNames = new ArraySet;
        this._mappings.unsortedForEach(function (mapping) {
          if (mapping.source === sourceFile && mapping.originalLine != null) {
            var original = aSourceMapConsumer.originalPositionFor({
                line: mapping.originalLine,
                column: mapping.originalColumn
              });
            if (original.source != null) {
              mapping.source = original.source;
              if (aSourceMapPath != null) {
                mapping.source = util.join(aSourceMapPath, mapping.source);
              }
              if (sourceRoot != null) {
                mapping.source = util.relative(sourceRoot, mapping.source);
              }
              mapping.originalLine = original.line;
              mapping.originalColumn = original.column;
              if (original.name != null) {
                mapping.name = original.name;
              }
            }
          }
          var source = mapping.source;
          if (source != null && !newSources.has(source)) {
            newSources.add(source);
          }
          var name = mapping.name;
          if (name != null && !newNames.has(name)) {
            newNames.add(name);
          }
        }, this);
        this._sources = newSources;
        this._names = newNames;
        aSourceMapConsumer.sources.forEach(function (sourceFile) {
          var content = aSourceMapConsumer.sourceContentFor(sourceFile);
          if (content != null) {
            if (aSourceMapPath != null) {
              sourceFile = util.join(aSourceMapPath, sourceFile);
            }
            if (sourceRoot != null) {
              sourceFile = util.relative(sourceRoot, sourceFile);
            }
            this.setSourceContent(sourceFile, content);
          }
        }, this);
      };
      SourceMapGenerator.prototype._validateMapping = function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource, aName) {
        if (aGenerated && 'line' in aGenerated && 'column' in aGenerated && aGenerated.line > 0 && aGenerated.column >= 0 && !aOriginal && !aSource && !aName) {
          return;
        } else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated && aOriginal && 'line' in aOriginal && 'column' in aOriginal && aGenerated.line > 0 && aGenerated.column >= 0 && aOriginal.line > 0 && aOriginal.column >= 0 && aSource) {
          return;
        } else {
          throw new Error('Invalid mapping: ' + JSON.stringify({
            generated: aGenerated,
            source: aSource,
            original: aOriginal,
            name: aName
          }));
        }
      };
      SourceMapGenerator.prototype._serializeMappings = function SourceMapGenerator_serializeMappings() {
        var previousGeneratedColumn = 0;
        var previousGeneratedLine = 1;
        var previousOriginalColumn = 0;
        var previousOriginalLine = 0;
        var previousName = 0;
        var previousSource = 0;
        var result = '';
        var mapping;
        var mappings = this._mappings.toArray();
        for (var i = 0, len = mappings.length; i < len; i++) {
          mapping = mappings[i];
          if (mapping.generatedLine !== previousGeneratedLine) {
            previousGeneratedColumn = 0;
            while (mapping.generatedLine !== previousGeneratedLine) {
              result += ';';
              previousGeneratedLine++;
            }
          } else {
            if (i > 0) {
              if (!util.compareByGeneratedPositions(mapping, mappings[i - 1])) {
                continue;
              }
              result += ',';
            }
          }
          result += base64VLQ.encode(mapping.generatedColumn - previousGeneratedColumn);
          previousGeneratedColumn = mapping.generatedColumn;
          if (mapping.source != null) {
            result += base64VLQ.encode(this._sources.indexOf(mapping.source) - previousSource);
            previousSource = this._sources.indexOf(mapping.source);
            result += base64VLQ.encode(mapping.originalLine - 1 - previousOriginalLine);
            previousOriginalLine = mapping.originalLine - 1;
            result += base64VLQ.encode(mapping.originalColumn - previousOriginalColumn);
            previousOriginalColumn = mapping.originalColumn;
            if (mapping.name != null) {
              result += base64VLQ.encode(this._names.indexOf(mapping.name) - previousName);
              previousName = this._names.indexOf(mapping.name);
            }
          }
        }
        return result;
      };
      SourceMapGenerator.prototype._generateSourcesContent = function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
        return aSources.map(function (source) {
          if (!this._sourcesContents) {
            return null;
          }
          if (aSourceRoot != null) {
            source = util.relative(aSourceRoot, source);
          }
          var key = util.toSetString(source);
          return Object.prototype.hasOwnProperty.call(this._sourcesContents, key) ? this._sourcesContents[key] : null;
        }, this);
      };
      SourceMapGenerator.prototype.toJSON = function SourceMapGenerator_toJSON() {
        var map = {
            version: this._version,
            sources: this._sources.toArray(),
            names: this._names.toArray(),
            mappings: this._serializeMappings()
          };
        if (this._file != null) {
          map.file = this._file;
        }
        if (this._sourceRoot != null) {
          map.sourceRoot = this._sourceRoot;
        }
        if (this._sourcesContents) {
          map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
        }
        return map;
      };
      SourceMapGenerator.prototype.toString = function SourceMapGenerator_toString() {
        return JSON.stringify(this);
      };
      exports.SourceMapGenerator = SourceMapGenerator;
    });
  });
  require.define('/node_modules/source-map/lib/source-map/mapping-list.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
      function generatedPositionAfter(mappingA, mappingB) {
        var lineA = mappingA.generatedLine;
        var lineB = mappingB.generatedLine;
        var columnA = mappingA.generatedColumn;
        var columnB = mappingB.generatedColumn;
        return lineB > lineA || lineB == lineA && columnB >= columnA || util.compareByGeneratedPositions(mappingA, mappingB) <= 0;
      }
      function MappingList() {
        this._array = [];
        this._sorted = true;
        this._last = {
          generatedLine: -1,
          generatedColumn: 0
        };
      }
      MappingList.prototype.unsortedForEach = function MappingList_forEach(aCallback, aThisArg) {
        this._array.forEach(aCallback, aThisArg);
      };
      MappingList.prototype.add = function MappingList_add(aMapping) {
        var mapping;
        if (generatedPositionAfter(this._last, aMapping)) {
          this._last = aMapping;
          this._array.push(aMapping);
        } else {
          this._sorted = false;
          this._array.push(aMapping);
        }
      };
      MappingList.prototype.toArray = function MappingList_toArray() {
        if (!this._sorted) {
          this._array.sort(util.compareByGeneratedPositions);
          this._sorted = true;
        }
        return this._array;
      };
      exports.MappingList = MappingList;
    });
  });
  require.define('/node_modules/source-map/lib/source-map/array-set.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
      function ArraySet() {
        this._array = [];
        this._set = {};
      }
      ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
        var set = new ArraySet;
        for (var i = 0, len = aArray.length; i < len; i++) {
          set.add(aArray[i], aAllowDuplicates);
        }
        return set;
      };
      ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
        var isDuplicate = this.has(aStr);
        var idx = this._array.length;
        if (!isDuplicate || aAllowDuplicates) {
          this._array.push(aStr);
        }
        if (!isDuplicate) {
          this._set[util.toSetString(aStr)] = idx;
        }
      };
      ArraySet.prototype.has = function ArraySet_has(aStr) {
        return Object.prototype.hasOwnProperty.call(this._set, util.toSetString(aStr));
      };
      ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
        if (this.has(aStr)) {
          return this._set[util.toSetString(aStr)];
        }
        throw new Error('"' + aStr + '" is not in the set.');
      };
      ArraySet.prototype.at = function ArraySet_at(aIdx) {
        if (aIdx >= 0 && aIdx < this._array.length) {
          return this._array[aIdx];
        }
        throw new Error('No element indexed by ' + aIdx);
      };
      ArraySet.prototype.toArray = function ArraySet_toArray() {
        return this._array.slice();
      };
      exports.ArraySet = ArraySet;
    });
  });
  require.define('/node_modules/source-map/lib/source-map/base64-vlq.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      var base64 = require('/node_modules/source-map/lib/source-map/base64.js', module);
      var VLQ_BASE_SHIFT = 5;
      var VLQ_BASE = 1 << VLQ_BASE_SHIFT;
      var VLQ_BASE_MASK = VLQ_BASE - 1;
      var VLQ_CONTINUATION_BIT = VLQ_BASE;
      function toVLQSigned(aValue) {
        return aValue < 0 ? (-aValue << 1) + 1 : (aValue << 1) + 0;
      }
      function fromVLQSigned(aValue) {
        var isNegative = (aValue & 1) === 1;
        var shifted = aValue >> 1;
        return isNegative ? -shifted : shifted;
      }
      exports.encode = function base64VLQ_encode(aValue) {
        var encoded = '';
        var digit;
        var vlq = toVLQSigned(aValue);
        do {
          digit = vlq & VLQ_BASE_MASK;
          vlq >>>= VLQ_BASE_SHIFT;
          if (vlq > 0) {
            digit |= VLQ_CONTINUATION_BIT;
          }
          encoded += base64.encode(digit);
        } while (vlq > 0);
        return encoded;
      };
      exports.decode = function base64VLQ_decode(aStr, aOutParam) {
        var i = 0;
        var strLen = aStr.length;
        var result = 0;
        var shift = 0;
        var continuation, digit;
        do {
          if (i >= strLen) {
            throw new Error('Expected more digits in base 64 VLQ value.');
          }
          digit = base64.decode(aStr.charAt(i++));
          continuation = !!(digit & VLQ_CONTINUATION_BIT);
          digit &= VLQ_BASE_MASK;
          result = result + (digit << shift);
          shift += VLQ_BASE_SHIFT;
        } while (continuation);
        aOutParam.value = fromVLQSigned(result);
        aOutParam.rest = aStr.slice(i);
      };
    });
  });
  require.define('/node_modules/source-map/lib/source-map/base64.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      var charToIntMap = {};
      var intToCharMap = {};
      'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('').forEach(function (ch, index) {
        charToIntMap[ch] = index;
        intToCharMap[index] = ch;
      });
      exports.encode = function base64_encode(aNumber) {
        if (aNumber in intToCharMap) {
          return intToCharMap[aNumber];
        }
        throw new TypeError('Must be between 0 and 63: ' + aNumber);
      };
      exports.decode = function base64_decode(aChar) {
        if (aChar in charToIntMap) {
          return charToIntMap[aChar];
        }
        throw new TypeError('Not a valid base 64 digit: ' + aChar);
      };
    });
  });
  require.define('/node_modules/source-map/lib/source-map/source-map-consumer.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
      function SourceMapConsumer(aSourceMap) {
        var sourceMap = aSourceMap;
        if (typeof aSourceMap === 'string') {
          sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
        }
        if (sourceMap.sections != null) {
          var indexedSourceMapConsumer = require('/node_modules/source-map/lib/source-map/indexed-source-map-consumer.js', module);
          return new indexedSourceMapConsumer.IndexedSourceMapConsumer(sourceMap);
        } else {
          var basicSourceMapConsumer = require('/node_modules/source-map/lib/source-map/basic-source-map-consumer.js', module);
          return new basicSourceMapConsumer.BasicSourceMapConsumer(sourceMap);
        }
      }
      SourceMapConsumer.fromSourceMap = function (aSourceMap) {
        var basicSourceMapConsumer = require('/node_modules/source-map/lib/source-map/basic-source-map-consumer.js', module);
        return basicSourceMapConsumer.BasicSourceMapConsumer.fromSourceMap(aSourceMap);
      };
      SourceMapConsumer.prototype._version = 3;
      SourceMapConsumer.prototype.__generatedMappings = null;
      Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
        get: function () {
          if (!this.__generatedMappings) {
            this.__generatedMappings = [];
            this.__originalMappings = [];
            this._parseMappings(this._mappings, this.sourceRoot);
          }
          return this.__generatedMappings;
        }
      });
      SourceMapConsumer.prototype.__originalMappings = null;
      Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
        get: function () {
          if (!this.__originalMappings) {
            this.__generatedMappings = [];
            this.__originalMappings = [];
            this._parseMappings(this._mappings, this.sourceRoot);
          }
          return this.__originalMappings;
        }
      });
      SourceMapConsumer.prototype._nextCharIsMappingSeparator = function SourceMapConsumer_nextCharIsMappingSeparator(aStr) {
        var c = aStr.charAt(0);
        return c === ';' || c === ',';
      };
      SourceMapConsumer.prototype._parseMappings = function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
        throw new Error('Subclasses must implement _parseMappings');
      };
      SourceMapConsumer.GENERATED_ORDER = 1;
      SourceMapConsumer.ORIGINAL_ORDER = 2;
      SourceMapConsumer.prototype.eachMapping = function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
        var context = aContext || null;
        var order = aOrder || SourceMapConsumer.GENERATED_ORDER;
        var mappings;
        switch (order) {
        case SourceMapConsumer.GENERATED_ORDER:
          mappings = this._generatedMappings;
          break;
        case SourceMapConsumer.ORIGINAL_ORDER:
          mappings = this._originalMappings;
          break;
        default:
          throw new Error('Unknown order of iteration.');
        }
        var sourceRoot = this.sourceRoot;
        mappings.map(function (mapping) {
          var source = mapping.source;
          if (source != null && sourceRoot != null) {
            source = util.join(sourceRoot, source);
          }
          return {
            source: source,
            generatedLine: mapping.generatedLine,
            generatedColumn: mapping.generatedColumn,
            originalLine: mapping.originalLine,
            originalColumn: mapping.originalColumn,
            name: mapping.name
          };
        }).forEach(aCallback, context);
      };
      SourceMapConsumer.prototype.allGeneratedPositionsFor = function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
        var needle = {
            source: util.getArg(aArgs, 'source'),
            originalLine: util.getArg(aArgs, 'line'),
            originalColumn: Infinity
          };
        if (this.sourceRoot != null) {
          needle.source = util.relative(this.sourceRoot, needle.source);
        }
        var mappings = [];
        var index = this._findMapping(needle, this._originalMappings, 'originalLine', 'originalColumn', util.compareByOriginalPositions);
        if (index >= 0) {
          var mapping = this._originalMappings[index];
          while (mapping && mapping.originalLine === needle.originalLine) {
            mappings.push({
              line: util.getArg(mapping, 'generatedLine', null),
              column: util.getArg(mapping, 'generatedColumn', null),
              lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
            });
            mapping = this._originalMappings[--index];
          }
        }
        return mappings.reverse();
      };
      exports.SourceMapConsumer = SourceMapConsumer;
    });
  });
  require.define('/node_modules/source-map/lib/source-map/basic-source-map-consumer.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
      var binarySearch = require('/node_modules/source-map/lib/source-map/binary-search.js', module);
      var ArraySet = require('/node_modules/source-map/lib/source-map/array-set.js', module).ArraySet;
      var base64VLQ = require('/node_modules/source-map/lib/source-map/base64-vlq.js', module);
      var SourceMapConsumer = require('/node_modules/source-map/lib/source-map/source-map-consumer.js', module).SourceMapConsumer;
      function BasicSourceMapConsumer(aSourceMap) {
        var sourceMap = aSourceMap;
        if (typeof aSourceMap === 'string') {
          sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
        }
        var version = util.getArg(sourceMap, 'version');
        var sources = util.getArg(sourceMap, 'sources');
        var names = util.getArg(sourceMap, 'names', []);
        var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
        var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
        var mappings = util.getArg(sourceMap, 'mappings');
        var file = util.getArg(sourceMap, 'file', null);
        if (version != this._version) {
          throw new Error('Unsupported version: ' + version);
        }
        sources = sources.map(util.normalize);
        this._names = ArraySet.fromArray(names, true);
        this._sources = ArraySet.fromArray(sources, true);
        this.sourceRoot = sourceRoot;
        this.sourcesContent = sourcesContent;
        this._mappings = mappings;
        this.file = file;
      }
      BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
      BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;
      BasicSourceMapConsumer.fromSourceMap = function SourceMapConsumer_fromSourceMap(aSourceMap) {
        var smc = Object.create(BasicSourceMapConsumer.prototype);
        smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
        smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
        smc.sourceRoot = aSourceMap._sourceRoot;
        smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(), smc.sourceRoot);
        smc.file = aSourceMap._file;
        smc.__generatedMappings = aSourceMap._mappings.toArray().slice();
        smc.__originalMappings = aSourceMap._mappings.toArray().slice().sort(util.compareByOriginalPositions);
        return smc;
      };
      BasicSourceMapConsumer.prototype._version = 3;
      Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
        get: function () {
          return this._sources.toArray().map(function (s) {
            return this.sourceRoot != null ? util.join(this.sourceRoot, s) : s;
          }, this);
        }
      });
      BasicSourceMapConsumer.prototype._parseMappings = function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
        var generatedLine = 1;
        var previousGeneratedColumn = 0;
        var previousOriginalLine = 0;
        var previousOriginalColumn = 0;
        var previousSource = 0;
        var previousName = 0;
        var str = aStr;
        var temp = {};
        var mapping;
        while (str.length > 0) {
          if (str.charAt(0) === ';') {
            generatedLine++;
            str = str.slice(1);
            previousGeneratedColumn = 0;
          } else if (str.charAt(0) === ',') {
            str = str.slice(1);
          } else {
            mapping = {};
            mapping.generatedLine = generatedLine;
            base64VLQ.decode(str, temp);
            mapping.generatedColumn = previousGeneratedColumn + temp.value;
            previousGeneratedColumn = mapping.generatedColumn;
            str = temp.rest;
            if (str.length > 0 && !this._nextCharIsMappingSeparator(str)) {
              base64VLQ.decode(str, temp);
              mapping.source = this._sources.at(previousSource + temp.value);
              previousSource += temp.value;
              str = temp.rest;
              if (str.length === 0 || this._nextCharIsMappingSeparator(str)) {
                throw new Error('Found a source, but no line and column');
              }
              base64VLQ.decode(str, temp);
              mapping.originalLine = previousOriginalLine + temp.value;
              previousOriginalLine = mapping.originalLine;
              mapping.originalLine += 1;
              str = temp.rest;
              if (str.length === 0 || this._nextCharIsMappingSeparator(str)) {
                throw new Error('Found a source and line, but no column');
              }
              base64VLQ.decode(str, temp);
              mapping.originalColumn = previousOriginalColumn + temp.value;
              previousOriginalColumn = mapping.originalColumn;
              str = temp.rest;
              if (str.length > 0 && !this._nextCharIsMappingSeparator(str)) {
                base64VLQ.decode(str, temp);
                mapping.name = this._names.at(previousName + temp.value);
                previousName += temp.value;
                str = temp.rest;
              }
            }
            this.__generatedMappings.push(mapping);
            if (typeof mapping.originalLine === 'number') {
              this.__originalMappings.push(mapping);
            }
          }
        }
        this.__generatedMappings.sort(util.compareByGeneratedPositions);
        this.__originalMappings.sort(util.compareByOriginalPositions);
      };
      BasicSourceMapConsumer.prototype._findMapping = function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName, aColumnName, aComparator) {
        if (aNeedle[aLineName] <= 0) {
          throw new TypeError('Line must be greater than or equal to 1, got ' + aNeedle[aLineName]);
        }
        if (aNeedle[aColumnName] < 0) {
          throw new TypeError('Column must be greater than or equal to 0, got ' + aNeedle[aColumnName]);
        }
        return binarySearch.search(aNeedle, aMappings, aComparator);
      };
      BasicSourceMapConsumer.prototype.computeColumnSpans = function SourceMapConsumer_computeColumnSpans() {
        for (var index = 0; index < this._generatedMappings.length; ++index) {
          var mapping = this._generatedMappings[index];
          if (index + 1 < this._generatedMappings.length) {
            var nextMapping = this._generatedMappings[index + 1];
            if (mapping.generatedLine === nextMapping.generatedLine) {
              mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
              continue;
            }
          }
          mapping.lastGeneratedColumn = Infinity;
        }
      };
      BasicSourceMapConsumer.prototype.originalPositionFor = function SourceMapConsumer_originalPositionFor(aArgs) {
        var needle = {
            generatedLine: util.getArg(aArgs, 'line'),
            generatedColumn: util.getArg(aArgs, 'column')
          };
        var index = this._findMapping(needle, this._generatedMappings, 'generatedLine', 'generatedColumn', util.compareByGeneratedPositions);
        if (index >= 0) {
          var mapping = this._generatedMappings[index];
          if (mapping.generatedLine === needle.generatedLine) {
            var source = util.getArg(mapping, 'source', null);
            if (source != null && this.sourceRoot != null) {
              source = util.join(this.sourceRoot, source);
            }
            return {
              source: source,
              line: util.getArg(mapping, 'originalLine', null),
              column: util.getArg(mapping, 'originalColumn', null),
              name: util.getArg(mapping, 'name', null)
            };
          }
        }
        return {
          source: null,
          line: null,
          column: null,
          name: null
        };
      };
      BasicSourceMapConsumer.prototype.sourceContentFor = function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
        if (!this.sourcesContent) {
          return null;
        }
        if (this.sourceRoot != null) {
          aSource = util.relative(this.sourceRoot, aSource);
        }
        if (this._sources.has(aSource)) {
          return this.sourcesContent[this._sources.indexOf(aSource)];
        }
        var url;
        if (this.sourceRoot != null && (url = util.urlParse(this.sourceRoot))) {
          var fileUriAbsPath = aSource.replace(/^file:\/\//, '');
          if (url.scheme == 'file' && this._sources.has(fileUriAbsPath)) {
            return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)];
          }
          if ((!url.path || url.path == '/') && this._sources.has('/' + aSource)) {
            return this.sourcesContent[this._sources.indexOf('/' + aSource)];
          }
        }
        if (nullOnMissing) {
          return null;
        } else {
          throw new Error('"' + aSource + '" is not in the SourceMap.');
        }
      };
      BasicSourceMapConsumer.prototype.generatedPositionFor = function SourceMapConsumer_generatedPositionFor(aArgs) {
        var needle = {
            source: util.getArg(aArgs, 'source'),
            originalLine: util.getArg(aArgs, 'line'),
            originalColumn: util.getArg(aArgs, 'column')
          };
        if (this.sourceRoot != null) {
          needle.source = util.relative(this.sourceRoot, needle.source);
        }
        var index = this._findMapping(needle, this._originalMappings, 'originalLine', 'originalColumn', util.compareByOriginalPositions);
        if (index >= 0) {
          var mapping = this._originalMappings[index];
          return {
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          };
        }
        return {
          line: null,
          column: null,
          lastColumn: null
        };
      };
      exports.BasicSourceMapConsumer = BasicSourceMapConsumer;
    });
  });
  require.define('/node_modules/source-map/lib/source-map/binary-search.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare) {
        var mid = Math.floor((aHigh - aLow) / 2) + aLow;
        var cmp = aCompare(aNeedle, aHaystack[mid], true);
        if (cmp === 0) {
          return mid;
        } else if (cmp > 0) {
          if (aHigh - mid > 1) {
            return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare);
          }
          return mid;
        } else {
          if (mid - aLow > 1) {
            return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare);
          }
          return aLow < 0 ? -1 : aLow;
        }
      }
      exports.search = function search(aNeedle, aHaystack, aCompare) {
        if (aHaystack.length === 0) {
          return -1;
        }
        return recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack, aCompare);
      };
    });
  });
  require.define('/node_modules/source-map/lib/source-map/indexed-source-map-consumer.js', function (module, exports, __dirname, __filename) {
    if (typeof define !== 'function') {
      var define = require('/node_modules/source-map/node_modules/amdefine/amdefine.js', module)(module, require);
    }
    define(function (require, exports, module) {
      var util = require('/node_modules/source-map/lib/source-map/util.js', module);
      var binarySearch = require('/node_modules/source-map/lib/source-map/binary-search.js', module);
      var SourceMapConsumer = require('/node_modules/source-map/lib/source-map/source-map-consumer.js', module).SourceMapConsumer;
      var BasicSourceMapConsumer = require('/node_modules/source-map/lib/source-map/basic-source-map-consumer.js', module).BasicSourceMapConsumer;
      function IndexedSourceMapConsumer(aSourceMap) {
        var sourceMap = aSourceMap;
        if (typeof aSourceMap === 'string') {
          sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
        }
        var version = util.getArg(sourceMap, 'version');
        var sections = util.getArg(sourceMap, 'sections');
        if (version != this._version) {
          throw new Error('Unsupported version: ' + version);
        }
        var lastOffset = {
            line: -1,
            column: 0
          };
        this._sections = sections.map(function (s) {
          if (s.url) {
            throw new Error('Support for url field in sections not implemented.');
          }
          var offset = util.getArg(s, 'offset');
          var offsetLine = util.getArg(offset, 'line');
          var offsetColumn = util.getArg(offset, 'column');
          if (offsetLine < lastOffset.line || offsetLine === lastOffset.line && offsetColumn < lastOffset.column) {
            throw new Error('Section offsets must be ordered and non-overlapping.');
          }
          lastOffset = offset;
          return {
            generatedOffset: {
              generatedLine: offsetLine + 1,
              generatedColumn: offsetColumn + 1
            },
            consumer: new SourceMapConsumer(util.getArg(s, 'map'))
          };
        });
      }
      IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
      IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;
      IndexedSourceMapConsumer.prototype._version = 3;
      Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
        get: function () {
          var sources = [];
          for (var i = 0; i < this._sections.length; i++) {
            for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
              sources.push(this._sections[i].consumer.sources[j]);
            }
          }
          ;
          return sources;
        }
      });
      IndexedSourceMapConsumer.prototype.originalPositionFor = function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
        var needle = {
            generatedLine: util.getArg(aArgs, 'line'),
            generatedColumn: util.getArg(aArgs, 'column')
          };
        var sectionIndex = binarySearch.search(needle, this._sections, function (needle, section) {
            var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
            if (cmp) {
              return cmp;
            }
            return needle.generatedColumn - section.generatedOffset.generatedColumn;
          });
        var section = this._sections[sectionIndex];
        if (!section) {
          return {
            source: null,
            line: null,
            column: null,
            name: null
          };
        }
        return section.consumer.originalPositionFor({
          line: needle.generatedLine - (section.generatedOffset.generatedLine - 1),
          column: needle.generatedColumn - (section.generatedOffset.generatedLine === needle.generatedLine ? section.generatedOffset.generatedColumn - 1 : 0)
        });
      };
      IndexedSourceMapConsumer.prototype.sourceContentFor = function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
        for (var i = 0; i < this._sections.length; i++) {
          var section = this._sections[i];
          var content = section.consumer.sourceContentFor(aSource, true);
          if (content) {
            return content;
          }
        }
        if (nullOnMissing) {
          return null;
        } else {
          throw new Error('"' + aSource + '" is not in the SourceMap.');
        }
      };
      IndexedSourceMapConsumer.prototype.generatedPositionFor = function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
        for (var i = 0; i < this._sections.length; i++) {
          var section = this._sections[i];
          if (section.consumer.sources.indexOf(util.getArg(aArgs, 'source')) === -1) {
            continue;
          }
          var generatedPosition = section.consumer.generatedPositionFor(aArgs);
          if (generatedPosition) {
            var ret = {
                line: generatedPosition.line + (section.generatedOffset.generatedLine - 1),
                column: generatedPosition.column + (section.generatedOffset.generatedLine === generatedPosition.line ? section.generatedOffset.generatedColumn - 1 : 0)
              };
            return ret;
          }
        }
        return {
          line: null,
          column: null
        };
      };
      IndexedSourceMapConsumer.prototype._parseMappings = function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
        this.__generatedMappings = [];
        this.__originalMappings = [];
        for (var i = 0; i < this._sections.length; i++) {
          var section = this._sections[i];
          var sectionMappings = section.consumer._generatedMappings;
          for (var j = 0; j < sectionMappings.length; j++) {
            var mapping = sectionMappings[i];
            var source = mapping.source;
            var sourceRoot = section.consumer.sourceRoot;
            if (source != null && sourceRoot != null) {
              source = util.join(sourceRoot, source);
            }
            var adjustedMapping = {
                source: source,
                generatedLine: mapping.generatedLine + (section.generatedOffset.generatedLine - 1),
                generatedColumn: mapping.column + (section.generatedOffset.generatedLine === mapping.generatedLine) ? section.generatedOffset.generatedColumn - 1 : 0,
                originalLine: mapping.originalLine,
                originalColumn: mapping.originalColumn,
                name: mapping.name
              };
            this.__generatedMappings.push(adjustedMapping);
            if (typeof adjustedMapping.originalLine === 'number') {
              this.__originalMappings.push(adjustedMapping);
            }
          }
          ;
        }
        ;
        this.__generatedMappings.sort(util.compareByGeneratedPositions);
        this.__originalMappings.sort(util.compareByOriginalPositions);
      };
      exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer;
    });
  });
  require.define('/node_modules/esutils/lib/utils.js', function (module, exports, __dirname, __filename) {
    (function () {
      'use strict';
      exports.ast = require('/node_modules/esutils/lib/ast.js', module);
      exports.code = require('/node_modules/esutils/lib/code.js', module);
      exports.keyword = require('/node_modules/esutils/lib/keyword.js', module);
    }());
  });
  require.define('/node_modules/esutils/lib/keyword.js', function (module, exports, __dirname, __filename) {
    (function () {
      'use strict';
      var code = require('/node_modules/esutils/lib/code.js', module);
      function isStrictModeReservedWordES6(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'let':
          return true;
        default:
          return false;
        }
      }
      function isKeywordES5(id, strict) {
        if (!strict && id === 'yield') {
          return false;
        }
        return isKeywordES6(id, strict);
      }
      function isKeywordES6(id, strict) {
        if (strict && isStrictModeReservedWordES6(id)) {
          return true;
        }
        switch (id.length) {
        case 2:
          return id === 'if' || id === 'in' || id === 'do';
        case 3:
          return id === 'var' || id === 'for' || id === 'new' || id === 'try';
        case 4:
          return id === 'this' || id === 'else' || id === 'case' || id === 'void' || id === 'with' || id === 'enum';
        case 5:
          return id === 'while' || id === 'break' || id === 'catch' || id === 'throw' || id === 'const' || id === 'yield' || id === 'class' || id === 'super';
        case 6:
          return id === 'return' || id === 'typeof' || id === 'delete' || id === 'switch' || id === 'export' || id === 'import';
        case 7:
          return id === 'default' || id === 'finally' || id === 'extends';
        case 8:
          return id === 'function' || id === 'continue' || id === 'debugger';
        case 10:
          return id === 'instanceof';
        default:
          return false;
        }
      }
      function isReservedWordES5(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES5(id, strict);
      }
      function isReservedWordES6(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES6(id, strict);
      }
      function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
      }
      function isIdentifierNameES5(id) {
        var i, iz, ch;
        if (id.length === 0) {
          return false;
        }
        ch = id.charCodeAt(0);
        if (!code.isIdentifierStartES5(ch)) {
          return false;
        }
        for (i = 1, iz = id.length; i < iz; ++i) {
          ch = id.charCodeAt(i);
          if (!code.isIdentifierPartES5(ch)) {
            return false;
          }
        }
        return true;
      }
      function decodeUtf16(lead, trail) {
        return (lead - 55296) * 1024 + (trail - 56320) + 65536;
      }
      function isIdentifierNameES6(id) {
        var i, iz, ch, lowCh, check;
        if (id.length === 0) {
          return false;
        }
        check = code.isIdentifierStartES6;
        for (i = 0, iz = id.length; i < iz; ++i) {
          ch = id.charCodeAt(i);
          if (55296 <= ch && ch <= 56319) {
            ++i;
            if (i >= iz) {
              return false;
            }
            lowCh = id.charCodeAt(i);
            if (!(56320 <= lowCh && lowCh <= 57343)) {
              return false;
            }
            ch = decodeUtf16(ch, lowCh);
          }
          if (!check(ch)) {
            return false;
          }
          check = code.isIdentifierPartES6;
        }
        return true;
      }
      function isIdentifierES5(id, strict) {
        return isIdentifierNameES5(id) && !isReservedWordES5(id, strict);
      }
      function isIdentifierES6(id, strict) {
        return isIdentifierNameES6(id) && !isReservedWordES6(id, strict);
      }
      module.exports = {
        isKeywordES5: isKeywordES5,
        isKeywordES6: isKeywordES6,
        isReservedWordES5: isReservedWordES5,
        isReservedWordES6: isReservedWordES6,
        isRestrictedWord: isRestrictedWord,
        isIdentifierNameES5: isIdentifierNameES5,
        isIdentifierNameES6: isIdentifierNameES6,
        isIdentifierES5: isIdentifierES5,
        isIdentifierES6: isIdentifierES6
      };
    }());
  });
  require.define('/node_modules/esutils/lib/code.js', function (module, exports, __dirname, __filename) {
    (function () {
      'use strict';
      var ES6Regex, ES5Regex, NON_ASCII_WHITESPACES, IDENTIFIER_START, IDENTIFIER_PART, ch;
      ES5Regex = {
        NonAsciiIdentifierStart: /[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0-\u08B2\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]/,
        NonAsciiIdentifierPart: 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uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]/
      };
      ES6Regex = {
        NonAsciiIdentifierStart: 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      };
      function isDecimalDigit(ch) {
        return 48 <= ch && ch <= 57;
      }
      function isHexDigit(ch) {
        return 48 <= ch && ch <= 57 || 97 <= ch && ch <= 102 || 65 <= ch && ch <= 70;
      }
      function isOctalDigit(ch) {
        return ch >= 48 && ch <= 55;
      }
      NON_ASCII_WHITESPACES = [
        5760,
        6158,
        8192,
        8193,
        8194,
        8195,
        8196,
        8197,
        8198,
        8199,
        8200,
        8201,
        8202,
        8239,
        8287,
        12288,
        65279
      ];
      function isWhiteSpace(ch) {
        return ch === 32 || ch === 9 || ch === 11 || ch === 12 || ch === 160 || ch >= 5760 && NON_ASCII_WHITESPACES.indexOf(ch) >= 0;
      }
      function isLineTerminator(ch) {
        return ch === 10 || ch === 13 || ch === 8232 || ch === 8233;
      }
      function fromCodePoint(cp) {
        if (cp <= 65535) {
          return String.fromCharCode(cp);
        }
        var cu1 = String.fromCharCode(Math.floor((cp - 65536) / 1024) + 55296);
        var cu2 = String.fromCharCode((cp - 65536) % 1024 + 56320);
        return cu1 + cu2;
      }
      IDENTIFIER_START = new Array(128);
      for (ch = 0; ch < 128; ++ch) {
        IDENTIFIER_START[ch] = ch >= 97 && ch <= 122 || ch >= 65 && ch <= 90 || ch === 36 || ch === 95;
      }
      IDENTIFIER_PART = new Array(128);
      for (ch = 0; ch < 128; ++ch) {
        IDENTIFIER_PART[ch] = ch >= 97 && ch <= 122 || ch >= 65 && ch <= 90 || ch >= 48 && ch <= 57 || ch === 36 || ch === 95;
      }
      function isIdentifierStartES5(ch) {
        return ch < 128 ? IDENTIFIER_START[ch] : ES5Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
      }
      function isIdentifierPartES5(ch) {
        return ch < 128 ? IDENTIFIER_PART[ch] : ES5Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
      }
      function isIdentifierStartES6(ch) {
        return ch < 128 ? IDENTIFIER_START[ch] : ES6Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
      }
      function isIdentifierPartES6(ch) {
        return ch < 128 ? IDENTIFIER_PART[ch] : ES6Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
      }
      module.exports = {
        isDecimalDigit: isDecimalDigit,
        isHexDigit: isHexDigit,
        isOctalDigit: isOctalDigit,
        isWhiteSpace: isWhiteSpace,
        isLineTerminator: isLineTerminator,
        isIdentifierStartES5: isIdentifierStartES5,
        isIdentifierPartES5: isIdentifierPartES5,
        isIdentifierStartES6: isIdentifierStartES6,
        isIdentifierPartES6: isIdentifierPartES6
      };
    }());
  });
  require.define('/node_modules/esutils/lib/ast.js', function (module, exports, __dirname, __filename) {
    (function () {
      'use strict';
      function isExpression(node) {
        if (node == null) {
          return false;
        }
        switch (node.type) {
        case 'ArrayExpression':
        case 'AssignmentExpression':
        case 'BinaryExpression':
        case 'CallExpression':
        case 'ConditionalExpression':
        case 'FunctionExpression':
        case 'Identifier':
        case 'Literal':
        case 'LogicalExpression':
        case 'MemberExpression':
        case 'NewExpression':
        case 'ObjectExpression':
        case 'SequenceExpression':
        case 'ThisExpression':
        case 'UnaryExpression':
        case 'UpdateExpression':
          return true;
        }
        return false;
      }
      function isIterationStatement(node) {
        if (node == null) {
          return false;
        }
        switch (node.type) {
        case 'DoWhileStatement':
        case 'ForInStatement':
        case 'ForStatement':
        case 'WhileStatement':
          return true;
        }
        return false;
      }
      function isStatement(node) {
        if (node == null) {
          return false;
        }
        switch (node.type) {
        case 'BlockStatement':
        case 'BreakStatement':
        case 'ContinueStatement':
        case 'DebuggerStatement':
        case 'DoWhileStatement':
        case 'EmptyStatement':
        case 'ExpressionStatement':
        case 'ForInStatement':
        case 'ForStatement':
        case 'IfStatement':
        case 'LabeledStatement':
        case 'ReturnStatement':
        case 'SwitchStatement':
        case 'ThrowStatement':
        case 'TryStatement':
        case 'VariableDeclaration':
        case 'WhileStatement':
        case 'WithStatement':
          return true;
        }
        return false;
      }
      function isSourceElement(node) {
        return isStatement(node) || node != null && node.type === 'FunctionDeclaration';
      }
      function trailingStatement(node) {
        switch (node.type) {
        case 'IfStatement':
          if (node.alternate != null) {
            return node.alternate;
          }
          return node.consequent;
        case 'LabeledStatement':
        case 'ForStatement':
        case 'ForInStatement':
        case 'WhileStatement':
        case 'WithStatement':
          return node.body;
        }
        return null;
      }
      function isProblematicIfStatement(node) {
        var current;
        if (node.type !== 'IfStatement') {
          return false;
        }
        if (node.alternate == null) {
          return false;
        }
        current = node.consequent;
        do {
          if (current.type === 'IfStatement') {
            if (current.alternate == null) {
              return true;
            }
          }
          current = trailingStatement(current);
        } while (current);
        return false;
      }
      module.exports = {
        isExpression: isExpression,
        isStatement: isStatement,
        isIterationStatement: isIterationStatement,
        isSourceElement: isSourceElement,
        isProblematicIfStatement: isProblematicIfStatement,
        trailingStatement: trailingStatement
      };
    }());
  });
  require.define('/node_modules/estraverse/estraverse.js', function (module, exports, __dirname, __filename) {
    (function (root, factory) {
      'use strict';
      if (typeof define === 'function' && define.amd) {
        define(['exports'], factory);
      } else if (typeof exports !== 'undefined') {
        factory(exports);
      } else {
        factory(root.estraverse = {});
      }
    }(this, function clone(exports) {
      'use strict';
      var Syntax, isArray, VisitorOption, VisitorKeys, objectCreate, objectKeys, BREAK, SKIP, REMOVE;
      function ignoreJSHintError() {
      }
      isArray = Array.isArray;
      if (!isArray) {
        isArray = function isArray(array) {
          return Object.prototype.toString.call(array) === '[object Array]';
        };
      }
      function deepCopy(obj) {
        var ret = {}, key, val;
        for (key in obj) {
          if (obj.hasOwnProperty(key)) {
            val = obj[key];
            if (typeof val === 'object' && val !== null) {
              ret[key] = deepCopy(val);
            } else {
              ret[key] = val;
            }
          }
        }
        return ret;
      }
      function shallowCopy(obj) {
        var ret = {}, key;
        for (key in obj) {
          if (obj.hasOwnProperty(key)) {
            ret[key] = obj[key];
          }
        }
        return ret;
      }
      ignoreJSHintError(shallowCopy);
      function upperBound(array, func) {
        var diff, len, i, current;
        len = array.length;
        i = 0;
        while (len) {
          diff = len >>> 1;
          current = i + diff;
          if (func(array[current])) {
            len = diff;
          } else {
            i = current + 1;
            len -= diff + 1;
          }
        }
        return i;
      }
      function lowerBound(array, func) {
        var diff, len, i, current;
        len = array.length;
        i = 0;
        while (len) {
          diff = len >>> 1;
          current = i + diff;
          if (func(array[current])) {
            i = current + 1;
            len -= diff + 1;
          } else {
            len = diff;
          }
        }
        return i;
      }
      ignoreJSHintError(lowerBound);
      objectCreate = Object.create || function () {
        function F() {
        }
        return function (o) {
          F.prototype = o;
          return new F;
        };
      }();
      objectKeys = Object.keys || function (o) {
        var keys = [], key;
        for (key in o) {
          keys.push(key);
        }
        return keys;
      };
      function extend(to, from) {
        var keys = objectKeys(from), key, i, len;
        for (i = 0, len = keys.length; i < len; i += 1) {
          key = keys[i];
          to[key] = from[key];
        }
        return to;
      }
      Syntax = {
        AssignmentExpression: 'AssignmentExpression',
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AwaitExpression: 'AwaitExpression',
        BlockStatement: 'BlockStatement',
        BinaryExpression: 'BinaryExpression',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ComprehensionBlock: 'ComprehensionBlock',
        ComprehensionExpression: 'ComprehensionExpression',
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DirectiveStatement: 'DirectiveStatement',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportBatchSpecifier: 'ExportBatchSpecifier',
        ExportDeclaration: 'ExportDeclaration',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForStatement: 'ForStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        GeneratorExpression: 'GeneratorExpression',
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        Literal: 'Literal',
        LabeledStatement: 'LabeledStatement',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MethodDefinition: 'MethodDefinition',
        ModuleSpecifier: 'ModuleSpecifier',
        NewExpression: 'NewExpression',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        Program: 'Program',
        Property: 'Property',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        SwitchStatement: 'SwitchStatement',
        SwitchCase: 'SwitchCase',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TryStatement: 'TryStatement',
        UnaryExpression: 'UnaryExpression',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        YieldExpression: 'YieldExpression'
      };
      VisitorKeys = {
        AssignmentExpression: [
          'left',
          'right'
        ],
        ArrayExpression: ['elements'],
        ArrayPattern: ['elements'],
        ArrowFunctionExpression: [
          'params',
          'defaults',
          'rest',
          'body'
        ],
        AwaitExpression: ['argument'],
        BlockStatement: ['body'],
        BinaryExpression: [
          'left',
          'right'
        ],
        BreakStatement: ['label'],
        CallExpression: [
          'callee',
          'arguments'
        ],
        CatchClause: [
          'param',
          'body'
        ],
        ClassBody: ['body'],
        ClassDeclaration: [
          'id',
          'body',
          'superClass'
        ],
        ClassExpression: [
          'id',
          'body',
          'superClass'
        ],
        ComprehensionBlock: [
          'left',
          'right'
        ],
        ComprehensionExpression: [
          'blocks',
          'filter',
          'body'
        ],
        ConditionalExpression: [
          'test',
          'consequent',
          'alternate'
        ],
        ContinueStatement: ['label'],
        DebuggerStatement: [],
        DirectiveStatement: [],
        DoWhileStatement: [
          'body',
          'test'
        ],
        EmptyStatement: [],
        ExportBatchSpecifier: [],
        ExportDeclaration: [
          'declaration',
          'specifiers',
          'source'
        ],
        ExportSpecifier: [
          'id',
          'name'
        ],
        ExpressionStatement: ['expression'],
        ForStatement: [
          'init',
          'test',
          'update',
          'body'
        ],
        ForInStatement: [
          'left',
          'right',
          'body'
        ],
        ForOfStatement: [
          'left',
          'right',
          'body'
        ],
        FunctionDeclaration: [
          'id',
          'params',
          'defaults',
          'rest',
          'body'
        ],
        FunctionExpression: [
          'id',
          'params',
          'defaults',
          'rest',
          'body'
        ],
        GeneratorExpression: [
          'blocks',
          'filter',
          'body'
        ],
        Identifier: [],
        IfStatement: [
          'test',
          'consequent',
          'alternate'
        ],
        ImportDeclaration: [
          'specifiers',
          'source'
        ],
        ImportDefaultSpecifier: ['id'],
        ImportNamespaceSpecifier: ['id'],
        ImportSpecifier: [
          'id',
          'name'
        ],
        Literal: [],
        LabeledStatement: [
          'label',
          'body'
        ],
        LogicalExpression: [
          'left',
          'right'
        ],
        MemberExpression: [
          'object',
          'property'
        ],
        MethodDefinition: [
          'key',
          'value'
        ],
        ModuleSpecifier: [],
        NewExpression: [
          'callee',
          'arguments'
        ],
        ObjectExpression: ['properties'],
        ObjectPattern: ['properties'],
        Program: ['body'],
        Property: [
          'key',
          'value'
        ],
        ReturnStatement: ['argument'],
        SequenceExpression: ['expressions'],
        SpreadElement: ['argument'],
        SwitchStatement: [
          'discriminant',
          'cases'
        ],
        SwitchCase: [
          'test',
          'consequent'
        ],
        TaggedTemplateExpression: [
          'tag',
          'quasi'
        ],
        TemplateElement: [],
        TemplateLiteral: [
          'quasis',
          'expressions'
        ],
        ThisExpression: [],
        ThrowStatement: ['argument'],
        TryStatement: [
          'block',
          'handlers',
          'handler',
          'guardedHandlers',
          'finalizer'
        ],
        UnaryExpression: ['argument'],
        UpdateExpression: ['argument'],
        VariableDeclaration: ['declarations'],
        VariableDeclarator: [
          'id',
          'init'
        ],
        WhileStatement: [
          'test',
          'body'
        ],
        WithStatement: [
          'object',
          'body'
        ],
        YieldExpression: ['argument']
      };
      BREAK = {};
      SKIP = {};
      REMOVE = {};
      VisitorOption = {
        Break: BREAK,
        Skip: SKIP,
        Remove: REMOVE
      };
      function Reference(parent, key) {
        this.parent = parent;
        this.key = key;
      }
      Reference.prototype.replace = function replace(node) {
        this.parent[this.key] = node;
      };
      Reference.prototype.remove = function remove() {
        if (isArray(this.parent)) {
          this.parent.splice(this.key, 1);
          return true;
        } else {
          this.replace(null);
          return false;
        }
      };
      function Element(node, path, wrap, ref) {
        this.node = node;
        this.path = path;
        this.wrap = wrap;
        this.ref = ref;
      }
      function Controller() {
      }
      Controller.prototype.path = function path() {
        var i, iz, j, jz, result, element;
        function addToPath(result, path) {
          if (isArray(path)) {
            for (j = 0, jz = path.length; j < jz; ++j) {
              result.push(path[j]);
            }
          } else {
            result.push(path);
          }
        }
        if (!this.__current.path) {
          return null;
        }
        result = [];
        for (i = 2, iz = this.__leavelist.length; i < iz; ++i) {
          element = this.__leavelist[i];
          addToPath(result, element.path);
        }
        addToPath(result, this.__current.path);
        return result;
      };
      Controller.prototype.type = function () {
        var node = this.current();
        return node.type || this.__current.wrap;
      };
      Controller.prototype.parents = function parents() {
        var i, iz, result;
        result = [];
        for (i = 1, iz = this.__leavelist.length; i < iz; ++i) {
          result.push(this.__leavelist[i].node);
        }
        return result;
      };
      Controller.prototype.current = function current() {
        return this.__current.node;
      };
      Controller.prototype.__execute = function __execute(callback, element) {
        var previous, result;
        result = undefined;
        previous = this.__current;
        this.__current = element;
        this.__state = null;
        if (callback) {
          result = callback.call(this, element.node, this.__leavelist[this.__leavelist.length - 1].node);
        }
        this.__current = previous;
        return result;
      };
      Controller.prototype.notify = function notify(flag) {
        this.__state = flag;
      };
      Controller.prototype.skip = function () {
        this.notify(SKIP);
      };
      Controller.prototype['break'] = function () {
        this.notify(BREAK);
      };
      Controller.prototype.remove = function () {
        this.notify(REMOVE);
      };
      Controller.prototype.__initialize = function (root, visitor) {
        this.visitor = visitor;
        this.root = root;
        this.__worklist = [];
        this.__leavelist = [];
        this.__current = null;
        this.__state = null;
        this.__fallback = visitor.fallback === 'iteration';
        this.__keys = VisitorKeys;
        if (visitor.keys) {
          this.__keys = extend(objectCreate(this.__keys), visitor.keys);
        }
      };
      function isNode(node) {
        if (node == null) {
          return false;
        }
        return typeof node === 'object' && typeof node.type === 'string';
      }
      function isProperty(nodeType, key) {
        return (nodeType === Syntax.ObjectExpression || nodeType === Syntax.ObjectPattern) && 'properties' === key;
      }
      Controller.prototype.traverse = function traverse(root, visitor) {
        var worklist, leavelist, element, node, nodeType, ret, key, current, current2, candidates, candidate, sentinel;
        this.__initialize(root, visitor);
        sentinel = {};
        worklist = this.__worklist;
        leavelist = this.__leavelist;
        worklist.push(new Element(root, null, null, null));
        leavelist.push(new Element(null, null, null, null));
        while (worklist.length) {
          element = worklist.pop();
          if (element === sentinel) {
            element = leavelist.pop();
            ret = this.__execute(visitor.leave, element);
            if (this.__state === BREAK || ret === BREAK) {
              return;
            }
            continue;
          }
          if (element.node) {
            ret = this.__execute(visitor.enter, element);
            if (this.__state === BREAK || ret === BREAK) {
              return;
            }
            worklist.push(sentinel);
            leavelist.push(element);
            if (this.__state === SKIP || ret === SKIP) {
              continue;
            }
            node = element.node;
            nodeType = element.wrap || node.type;
            candidates = this.__keys[nodeType];
            if (!candidates) {
              if (this.__fallback) {
                candidates = objectKeys(node);
              } else {
                throw new Error('Unknown node type ' + nodeType + '.');
              }
            }
            current = candidates.length;
            while ((current -= 1) >= 0) {
              key = candidates[current];
              candidate = node[key];
              if (!candidate) {
                continue;
              }
              if (isArray(candidate)) {
                current2 = candidate.length;
                while ((current2 -= 1) >= 0) {
                  if (!candidate[current2]) {
                    continue;
                  }
                  if (isProperty(nodeType, candidates[current])) {
                    element = new Element(candidate[current2], [
                      key,
                      current2
                    ], 'Property', null);
                  } else if (isNode(candidate[current2])) {
                    element = new Element(candidate[current2], [
                      key,
                      current2
                    ], null, null);
                  } else {
                    continue;
                  }
                  worklist.push(element);
                }
              } else if (isNode(candidate)) {
                worklist.push(new Element(candidate, key, null, null));
              }
            }
          }
        }
      };
      Controller.prototype.replace = function replace(root, visitor) {
        function removeElem(element) {
          var i, key, nextElem, parent;
          if (element.ref.remove()) {
            key = element.ref.key;
            parent = element.ref.parent;
            i = worklist.length;
            while (i--) {
              nextElem = worklist[i];
              if (nextElem.ref && nextElem.ref.parent === parent) {
                if (nextElem.ref.key < key) {
                  break;
                }
                --nextElem.ref.key;
              }
            }
          }
        }
        var worklist, leavelist, node, nodeType, target, element, current, current2, candidates, candidate, sentinel, outer, key;
        this.__initialize(root, visitor);
        sentinel = {};
        worklist = this.__worklist;
        leavelist = this.__leavelist;
        outer = { root: root };
        element = new Element(root, null, null, new Reference(outer, 'root'));
        worklist.push(element);
        leavelist.push(element);
        while (worklist.length) {
          element = worklist.pop();
          if (element === sentinel) {
            element = leavelist.pop();
            target = this.__execute(visitor.leave, element);
            if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
              element.ref.replace(target);
            }
            if (this.__state === REMOVE || target === REMOVE) {
              removeElem(element);
            }
            if (this.__state === BREAK || target === BREAK) {
              return outer.root;
            }
            continue;
          }
          target = this.__execute(visitor.enter, element);
          if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
            element.ref.replace(target);
            element.node = target;
          }
          if (this.__state === REMOVE || target === REMOVE) {
            removeElem(element);
            element.node = null;
          }
          if (this.__state === BREAK || target === BREAK) {
            return outer.root;
          }
          node = element.node;
          if (!node) {
            continue;
          }
          worklist.push(sentinel);
          leavelist.push(element);
          if (this.__state === SKIP || target === SKIP) {
            continue;
          }
          nodeType = element.wrap || node.type;
          candidates = this.__keys[nodeType];
          if (!candidates) {
            if (this.__fallback) {
              candidates = objectKeys(node);
            } else {
              throw new Error('Unknown node type ' + nodeType + '.');
            }
          }
          current = candidates.length;
          while ((current -= 1) >= 0) {
            key = candidates[current];
            candidate = node[key];
            if (!candidate) {
              continue;
            }
            if (isArray(candidate)) {
              current2 = candidate.length;
              while ((current2 -= 1) >= 0) {
                if (!candidate[current2]) {
                  continue;
                }
                if (isProperty(nodeType, candidates[current])) {
                  element = new Element(candidate[current2], [
                    key,
                    current2
                  ], 'Property', new Reference(candidate, current2));
                } else if (isNode(candidate[current2])) {
                  element = new Element(candidate[current2], [
                    key,
                    current2
                  ], null, new Reference(candidate, current2));
                } else {
                  continue;
                }
                worklist.push(element);
              }
            } else if (isNode(candidate)) {
              worklist.push(new Element(candidate, key, null, new Reference(node, key)));
            }
          }
        }
        return outer.root;
      };
      function traverse(root, visitor) {
        var controller = new Controller;
        return controller.traverse(root, visitor);
      }
      function replace(root, visitor) {
        var controller = new Controller;
        return controller.replace(root, visitor);
      }
      function extendCommentRange(comment, tokens) {
        var target;
        target = upperBound(tokens, function search(token) {
          return token.range[0] > comment.range[0];
        });
        comment.extendedRange = [
          comment.range[0],
          comment.range[1]
        ];
        if (target !== tokens.length) {
          comment.extendedRange[1] = tokens[target].range[0];
        }
        target -= 1;
        if (target >= 0) {
          comment.extendedRange[0] = tokens[target].range[1];
        }
        return comment;
      }
      function attachComments(tree, providedComments, tokens) {
        var comments = [], comment, len, i, cursor;
        if (!tree.range) {
          throw new Error('attachComments needs range information');
        }
        if (!tokens.length) {
          if (providedComments.length) {
            for (i = 0, len = providedComments.length; i < len; i += 1) {
              comment = deepCopy(providedComments[i]);
              comment.extendedRange = [
                0,
                tree.range[0]
              ];
              comments.push(comment);
            }
            tree.leadingComments = comments;
          }
          return tree;
        }
        for (i = 0, len = providedComments.length; i < len; i += 1) {
          comments.push(extendCommentRange(deepCopy(providedComments[i]), tokens));
        }
        cursor = 0;
        traverse(tree, {
          enter: function (node) {
            var comment;
            while (cursor < comments.length) {
              comment = comments[cursor];
              if (comment.extendedRange[1] > node.range[0]) {
                break;
              }
              if (comment.extendedRange[1] === node.range[0]) {
                if (!node.leadingComments) {
                  node.leadingComments = [];
                }
                node.leadingComments.push(comment);
                comments.splice(cursor, 1);
              } else {
                cursor += 1;
              }
            }
            if (cursor === comments.length) {
              return VisitorOption.Break;
            }
            if (comments[cursor].extendedRange[0] > node.range[1]) {
              return VisitorOption.Skip;
            }
          }
        });
        cursor = 0;
        traverse(tree, {
          leave: function (node) {
            var comment;
            while (cursor < comments.length) {
              comment = comments[cursor];
              if (node.range[1] < comment.extendedRange[0]) {
                break;
              }
              if (node.range[1] === comment.extendedRange[0]) {
                if (!node.trailingComments) {
                  node.trailingComments = [];
                }
                node.trailingComments.push(comment);
                comments.splice(cursor, 1);
              } else {
                cursor += 1;
              }
            }
            if (cursor === comments.length) {
              return VisitorOption.Break;
            }
            if (comments[cursor].extendedRange[0] > node.range[1]) {
              return VisitorOption.Skip;
            }
          }
        });
        return tree;
      }
      exports.version = '1.8.1-dev';
      exports.Syntax = Syntax;
      exports.traverse = traverse;
      exports.replace = replace;
      exports.attachComments = attachComments;
      exports.VisitorKeys = VisitorKeys;
      exports.VisitorOption = VisitorOption;
      exports.Controller = Controller;
      exports.cloneEnvironment = function () {
        return clone({});
      };
      return exports;
    }));
  });
  require('/tools/entry-point.js');
}.call(this, this));
/* --------------------------------------------------------------
         EspruinoTools/plugins/minify.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Automatically minify code before it is sent to Espruino
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var minifyUrl = "https://closure-compiler.appspot.com/compile";
  var minifyCache = [];

  function init() {
    Espruino.Core.Config.addSection("Minification", {
      sortOrder:600,
      description: "Minification takes your JavaScript code and makes it smaller by removing comments and whitespace. "+
                   "It can make your code execute faster and will save memory, but it will also make it harder to debug.\n"+
                   "Esprima is a minifier built in to the Web IDE, so it can be used without an internet connection. "+
                   "The Closure Compiler is an online service offered by Google. It produces more efficient code, but you need an internet connection to use it."
    });

    Espruino.Core.Config.add("MINIFICATION_LEVEL", {
      section : "Minification",
      name : "Minification",
      description : "Automatically minify code from the Editor window?",
      type : { "":"No Minification",
               "ESPRIMA":"Esprima (offline)",
               "WHITESPACE_ONLY":"Closure (online) - Whitespace Only",
               "SIMPLE_OPTIMIZATIONS":"Closure (online) - Simple Optimizations",
               "ADVANCED_OPTIMIZATIONS":"Closure (online) - Advanced Optimizations (not recommended)"},
      defaultValue : ""
    });
    Espruino.Core.Config.add("MODULE_MINIFICATION_LEVEL", {
      section : "Minification",
      name : "Module Minification",
      description : "Automatically minify modules? Only modules with a .js extension will be minified - if a file with a .min.js extension exists then it will be used instead.",
      type : { "":"No Minification",
               "ESPRIMA":"Esprima (offline)",
               "WHITESPACE_ONLY":"Closure (online) - Whitespace Only",
               "SIMPLE_OPTIMIZATIONS":"Closure (online) - Simple Optimizations",
               "ADVANCED_OPTIMIZATIONS":"Closure (online) - Advanced Optimizations (not recommended)"},
      defaultValue : "ESPRIMA"
    });

    Espruino.Core.Config.add("MINIFICATION_Mangle",{
      section : "Minification",
      name : "Esprima: Mangle",
      description : "Shorten variable names",
      type : "boolean",
      defaultValue : true
    });

    // When code is sent to Espruino, search it for modules and add extra code required to load them
    Espruino.addProcessor("transformForEspruino", function(code, callback) {
      minify(code, callback, Espruino.Config.MINIFICATION_LEVEL, false, "");
    });
   // When code is sent to Espruino, search it for modules and add extra code required to load them
    Espruino.addProcessor("transformModuleForEspruino", function(module, callback) {
      if (module.minified) // don't minify if module already minified
        return callback(module);
      minify(module.code, function(code) {
        module.code = code;
        callback(module);
      }, Espruino.Config.MODULE_MINIFICATION_LEVEL, true, " in "+module.name);
    });
  }


  // Use the 'offline' Esprima compile
  function minifyCodeEsprima(code,callback,description) {
    if ((typeof esprima == "undefined") ||
        (typeof esmangle == "undefined") ||
        (typeof escodegen == "undefined")) {
      console.warn("esprima/esmangle/escodegen not defined - not minifying")
      return callback(code);
    }

    var code, syntax, option, str, before, after;
    var options = {};
    options["mangle"] = Espruino.Config.MINIFICATION_Mangle;
    option = {format: {
      renumber: true,
      hexadecimal: true,
      escapeless: false,
      indent: {style: ''},
      quotes: 'auto',
      compact: true,
      semicolons: false,
      parentheses: false
    }};
    str = '';
    try {
        before = code.length;
        syntax = esprima.parse(code, { raw: true, loc: true });
        syntax = obfuscate(syntax,options);
        code = escodegen.generate(syntax, option);
        after = code.length;
        if (before > after) {
          Espruino.Core.Notifications.info('No errors'+description+'. Minified ' + before + ' bytes to ' + after + ' bytes.');
        } else {
          Espruino.Core.Notifications.info('Can not minify further'+description+', code is already optimized.');
        }
        callback(code);
    } catch (e) {
      Espruino.Core.Notifications.error(e.toString()+description);
      console.error(e.stack);
      callback(code);
    }
  }
  function obfuscate(syntax,options) {
    // hack for random changes between version we have included for Web IDE and node.js version
    if (typeof esmangle.require == "undefined")
      esmangle.require = esmangle.pass.require;
    syntax = esmangle.optimize(syntax, null,{
        destructive: true,
        directive: true,
        preserveCompletionValue: false,
        legacy: false,
        topLevelContext: false,
        inStrictCode: false
    });
    if (options.mangle) syntax = esmangle.mangle(syntax);
    return syntax;
  }

  // Use the 'online' Closure compiler
  function minifyCodeGoogle(code, callback, minificationLevel, description){
    for (var i in minifyCache) {
      var item = minifyCache[i];
      if (item.code==code && item.level==minificationLevel) {
        console.log("Found code in minification cache - using that"+description);
        // move to front of cache
        minifyCache.splice(i,1); // remove old
        minifyCache.push(item); // add at front
        // callback
        callback(item.minified);
        return;
      }
    }
    closureCompilerGoogle(code,  minificationLevel, 'compiled_code', function(minified) {
      if (minified.trim()!="") {
        Espruino.Core.Notifications.info('No errors'+description+'. Minifying ' + code.length + ' bytes to ' + minified.length + ' bytes');
        if (minifyCache.length>100)
          minifyCache = minifyCache.slice(-100);
        minifyCache.push({ level : minificationLevel, code : code, minified : minified });
        callback(minified);
      } else {
        Espruino.Core.Notifications.warning("Errors while minifying"+description+" - sending unminified code.");
        callback(code);
        // get errors...
        closureCompilerGoogle(code,  minificationLevel, 'errors',function(errors) {
          errors.split("\n").forEach(function (err) {
            if (err.trim()!="")
              Espruino.Core.Notifications.error(err.trim()+description);
          });
        });
      }
    });
  }
  function closureCompilerGoogle(code, minificationLevel, output_info, callback){
    if(minificationLevel !== ""){
      var minifyObj = $.param({
        compilation_level: minificationLevel,
        output_format: "text",
        output_info: output_info,
        js_code: code,
        language : "ECMASCRIPT6", // so no need to mess with binary numbers now. \o/
        language_out : "ECMASCRIPT5" // ES6 output uses some now features now that Espruino doesn't like
      });
      $.post(minifyUrl, minifyObj, function(minifiedCode) {
        code = minifiedCode;
      },"text")
      .error(function() {
        Espruino.Core.Notifications.error("HTTP error while minifying");
      })
      .complete(function() {
        // ensure we call the callback even if minification failes
        callback(code);
      });
    }
  }

  function minify(code, callback, level, isModule, description) {
    (function() {
      Espruino.Core.Status.setStatus("Minifying"+(isModule?description.substr(4)/*module name*/:""));
      var _callback = callback;
      callback = function(code) {
        Espruino.Core.Status.setStatus("Minification complete");
        _callback(code);
      };
    })();

    switch(level){
      case "WHITESPACE_ONLY":
      case "SIMPLE_OPTIMIZATIONS":
      case "ADVANCED_OPTIMIZATIONS": minifyCodeGoogle(code, callback, level, description); break;
      case "ESPRIMA": minifyCodeEsprima(code, callback, description); break;
      default: callback(code); break;
    }
  }

  Espruino.Plugins.Minify = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/plugins/pretokenise.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Pretokenise code before it uploads
 ------------------------------------------------------------------
**/
"use strict";
(function(){
  if (typeof acorn == "undefined") {
    console.log("pretokenise: needs acorn, disabling.");
    return;
  }

  function init() {
    Espruino.Core.Config.add("PRETOKENISE", {
      section : "Minification",
      name : "Pretokenise code before upload",
      description : "All whitespace and comments are removed and all reserved words are converted to tokens before upload. This means a faster upload, less memory used, and increased performance (+10%) at the expense of code readability.",
      type : {
        0: "Never",
        1: "Auto (tokenise Strings on 2v20.48 or later)",
        2: "Yes (always tokenise everything, regardless of version)"
      },
      defaultValue : 0
    });

    // When code is sent to Espruino, search it for modules and add extra code required to load them
    Espruino.addProcessor("transformForEspruino", function(code, callback) {
      if (Espruino.Config.PRETOKENISE == 0) return callback(code); // disabled?
      if (Espruino.Config.SAVE_ON_SEND == 0) {
        console.log("pretokenise> Can't pretokenise code sent to REPL (RAM)");
        return callback(code);
      }
      pretokenise(code, callback);
    });
   // When code is sent to Espruino, search it for modules and add extra code required to load them
    Espruino.addProcessor("transformModuleForEspruino", function(module, callback) {
      if (Espruino.Config.PRETOKENISE == 0 || // disabled?
          Espruino.Config.MODULE_AS_FUNCTION) return callback(module);
      /* if MODULE_AS_FUNCTION is specified the module is uploaded inside a 'function'
      block, in which case it will be pretokenised anyway in a later step */
      pretokenise(module.code, function(code) {
        module.code = code;
        callback(module);
      });
    });
  }


  var LEX_OPERATOR_START = 138;
  var TOKENS =  [// plundered from jslex.c
/* LEX_EQUAL      :   */ "==",
/* LEX_TYPEEQUAL  :   */ "===",
/* LEX_NEQUAL     :   */ "!=",
/* LEX_NTYPEEQUAL :   */ "!==",
/* LEX_LEQUAL    :    */ "<=",
/* LEX_LSHIFT     :   */ "<<",
/* LEX_LSHIFTEQUAL :  */ "<<=",
/* LEX_GEQUAL      :  */ ">=",
/* LEX_RSHIFT      :  */ ">>",
/* LEX_RSHIFTUNSIGNED */ ">>>",
/* LEX_RSHIFTEQUAL :  */ ">>=",
/* LEX_RSHIFTUNSIGNEDEQUAL */ ">>>=",
/* LEX_PLUSEQUAL   :  */ "+=",
/* LEX_MINUSEQUAL  :  */ "-=",
/* LEX_PLUSPLUS :     */ "++",
/* LEX_MINUSMINUS     */ "--",
/* LEX_MULEQUAL :     */ "*=",
/* LEX_DIVEQUAL :     */ "/=",
/* LEX_MODEQUAL :     */ "%=",
/* LEX_ANDEQUAL :     */ "&=",
/* LEX_ANDAND :       */ "&&",
/* LEX_OREQUAL :      */ "|=",
/* LEX_OROR :         */ "||",
/* LEX_XOREQUAL :     */ "^=",
/* LEX_ARROW_FUNCTION */ "=>",
// reserved words
/*LEX_R_IF :       */ "if",
/*LEX_R_ELSE :     */ "else",
/*LEX_R_DO :       */ "do",
/*LEX_R_WHILE :    */ "while",
/*LEX_R_FOR :      */ "for",
/*LEX_R_BREAK :    */ "break",
/*LEX_R_CONTINUE   */ "continue",
/*LEX_R_FUNCTION   */ "function",
/*LEX_R_RETURN     */ "return",
/*LEX_R_VAR :      */ "var",
/*LEX_R_LET :      */ "let",
/*LEX_R_CONST :    */ "const",
/*LEX_R_THIS :     */ "this",
/*LEX_R_THROW :    */ "throw",
/*LEX_R_TRY :      */ "try",
/*LEX_R_CATCH :    */ "catch",
/*LEX_R_FINALLY :  */ "finally",
/*LEX_R_TRUE :     */ "true",
/*LEX_R_FALSE :    */ "false",
/*LEX_R_NULL :     */ "null",
/*LEX_R_UNDEFINED  */ "undefined",
/*LEX_R_NEW :      */ "new",
/*LEX_R_IN :       */ "in",
/*LEX_R_INSTANCEOF */ "instanceof",
/*LEX_R_SWITCH     */ "switch",
/*LEX_R_CASE       */ "case",
/*LEX_R_DEFAULT    */ "default",
/*LEX_R_DELETE     */ "delete",
/*LEX_R_TYPEOF :   */ "typeof",
/*LEX_R_VOID :     */ "void",
/*LEX_R_DEBUGGER : */ "debugger",
/*LEX_R_CLASS :    */ "class",
/*LEX_R_EXTENDS :  */ "extends",
/*LEX_R_SUPER :  */   "super",
/*LEX_R_STATIC :   */ "static",
/*LEX_R_OF    :   */  "of"
];

  const LEX_RAW_STRING8 = 0xD1;
  const LEX_RAW_STRING16 = 0xD2;
  const LEX_RAW_INT0 = 0xD3;
  const LEX_RAW_INT8 = 0xD4;
  const LEX_RAW_INT16 = 0xD5;

  function pretokenise(code, callback) {
    callback(tokenise(code));
  }

  function tokenise(code) {
    var pretokeniseStrings = false; // only works on 2v20.48 and later
    var pretokeniseInts = false; // only works on 2v25.396 and later
    var boardData = Espruino.Core.Env.getBoardData();
    if (Espruino.Config.PRETOKENISE==2) { // force all options always
      pretokeniseStrings = true;
      pretokeniseInts = true;
    } else if (boardData && boardData.VERSION) { // Espruino.Config.PRETOKENISE is nonzero or we wouldn't be called
      var v = parseFloat(boardData.VERSION.replace("v","0"));
      if (v >= 2020.48)
        pretokeniseStrings = true;
      if (v >= 2026)
        pretokeniseInts = true;
    }

    var lex = (function() {
      let t = acorn.tokenizer(code, { ecmaVersion : 2020 });
      return { next : function() {
        let tk = t.getToken();
        let tkStr = code.substring(tk.start, tk.end), tkValue = tk.value, tkEnd = tk.end;
        if (tk.type.label=="eof") return undefined;
        let tp = "?";
        if (tk.type.label=="`") { // template string
          // acorn splits these up into tokens, so we have to work through to the end, then just include the full text
          let tk2, hasTemplate = false, nesting=0;
          do {
            tk2 = t.getToken();
            if (tk2.type.label=="${") {
              hasTemplate = true;
              nesting++;
            }
            if (tk2.type.label=="{") nesting++;
            if (tk2.type.label=="}") nesting--;
          } while (nesting>0 || tk2.type.label!="`");
          tkEnd = tk2.end;
          tkStr = code.substring(tk.start, tkEnd);
          tp = hasTemplate ? "TEMPLATEDSTRING" : "STRING"; // if we don't have any templates, treat as a normal string (https://github.com/espruino/Espruino/issues/2577)
          tkValue = hasTemplate ? tkStr : eval(tkStr); // don't evaluate if it has templates as it must be done at runtime!
        } else if (tk.type.label=="string") tp="STRING";
        else if (tk.type.label=="num") tp="NUMBER";
        else if (tk.type.keyword || tk.type.label=="name") tp="ID";
        else if (tp=="?" && tk.start+1==tk.end) tp="CHAR";
        return {
          startIdx : tk.start,
          endIdx : tkEnd,
          str : tkStr,
          value : tkValue,
          type : tp
        };
      }};
    })();
    var brackets = 0;
    var resultCode = "";
    var lastIdx = 0;
    var lastTok = {str:""}, lastlastTok = {str:""};
    var tok = lex.next();
    while (tok!==undefined) {
      var previousString = code.substring(lastIdx, tok.startIdx);
      var tokenString = code.substring(tok.startIdx, tok.endIdx);
      var tokenId = LEX_OPERATOR_START + TOKENS.indexOf(tokenString);
      if (tokenId<LEX_OPERATOR_START) tokenId=undefined;
      // Workaround for https://github.com/espruino/Espruino/issues/1868
      if (tokenString=="catch") tokenId=undefined;
      //console.log("prev "+JSON.stringify(previousString)+"   next "+tokenString);

      if (tok.str=="(" || tok.str=="{" || tok.str=="[") brackets++;
      // TODO: check for eg. two IDs/similar which can't be merged without a space
      // preserve newlines at root scope to avoid us filling up the command buffer all at once
      if (brackets==0 && previousString.indexOf("\n")>=0)
        resultCode += "\n";
      if (tok.str==")" || tok.str=="}" || tok.str=="]") brackets--;
      // if we have a token for something, use that - else use the string
      if (pretokeniseStrings && tok.type == "STRING" &&
          tok.value.split("").reduce((r,ch) => r&&(ch.charCodeAt(0)<256), true)/*all 8 bit*/) {
        let str = tok.value;  // get string value
        lastIdx = tok.endIdx; // get next token
        lastlastTok = lastTok;
        lastTok = tok;
        tok = lex.next();
        let hadAtoB = resultCode.endsWith("atob(") && tok.str==")"; // were we surrounded by 'atob'?
        if (hadAtoB) {
          str = Espruino.Core.Utils.atob(str);
          resultCode = resultCode.substring(0, resultCode.length-5); // remove 'atob('
        }
        let length = str.length;
        if (length==0) { // it's shorter just to write quotes
          resultCode += tokenString;
        } else if (length<256)
          resultCode += String.fromCharCode(LEX_RAW_STRING8, length) + str;
        else if (length<65536)
          resultCode += String.fromCharCode(LEX_RAW_STRING16, length&255, (length>>8)&255)+str;
        if (!hadAtoB) continue; // if not atob, we already got the last token ready
      } else if (pretokeniseInts && tok.type == "NUMBER") {
        let val = tok.value;  // get string value
        if (val==Math.round(val)) { // ensure it's an integer
          // Was there a '-' in a place where it's not a subtraction?
          if (lastTok.str=="-" && [",","(",":","?","="].includes(lastlastTok.str)) {
            resultCode = resultCode.slice(0,-1); // remove -
            val = -val; // negate value
          }
          if (val==0) { // it's shorter just to write quotes
            resultCode += String.fromCharCode(LEX_RAW_INT0);
          } else if (val>=-128 && val<128)
            resultCode += String.fromCharCode(LEX_RAW_INT8, val&255);
          else if (val>=-32768 && val<32768)
            resultCode += String.fromCharCode(LEX_RAW_INT16, val&255, (val>>8)&255);
          else {
            if (val<0) resultCode += "-"; // re-add the '-' we took off
            resultCode += tokenString;
          }
        } else resultCode += tokenString;
      } else if (tokenId) {
        //console.log(JSON.stringify(tok.str)+" => "+tokenId);
        resultCode += String.fromCharCode(tokenId);
        tok.type = "TOKENISED";
      } else {
        if ((tok.type=="ID" || tok.type=="NUMBER") &&
            (lastTok.type=="ID" || lastTok.type=="NUMBER"))
          resultCode += " ";
        resultCode += tokenString;
      }
      // next
      lastIdx = tok.endIdx;
      lastlastTok = lastTok;
      lastTok = tok;
      tok = lex.next();
    }
    return resultCode;
  }

  function isTokenised(code) {
    for (var i=0;i<code.length;i++) {
      var ch = code.charCodeAt(i);
      // check for chars out of range
      if (ch>=LEX_OPERATOR_START+TOKENS.length) return false;
    }
    return true;
  }

  function untokenise(code) {
    function needSpaceBetween(lastch, ch) {
      var chAlphaNum="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_$0123456789";
      return (lastch>=LEX_OPERATOR_START || ch>=LEX_OPERATOR_START) &&
         (lastch>=LEX_OPERATOR_START || chAlphaNum.includes(String.fromCharCode(lastch))) &&
         (ch>=LEX_OPERATOR_START || chAlphaNum.includes(String.fromCharCode(ch)));
    }
    var resultCode = "";
    var lastCh = 0;
    for (var i=0;i<code.length;i++) {
      var ch = code.charCodeAt(i);
      if (needSpaceBetween(lastCh, ch))
        resultCode += " ";
      if (ch>=LEX_OPERATOR_START) {
        if (ch==LEX_RAW_STRING8) { // decode raw strings
          let len = code.charCodeAt(i+1);
          resultCode += Espruino.Core.Utils.toJSONishString(code.substring(i+2, i+2+len));
          i+=1+len;
        } else if (ch==LEX_RAW_STRING16) {
          let len = code.charCodeAt(i+1) | (code.charCodeAt(i+2)<<8);
          resultCode += Espruino.Core.Utils.toJSONishString(code.substring(i+3, i+3+len));
          i+=2+len;
        } else if (ch==LEX_RAW_INT0) { // decode raw strings
          resultCode += "0";
        } else if (ch==LEX_RAW_INT8) { // decode raw strings
          let val = code.charCodeAt(i+1);
          resultCode += val.toString();
          i+=1;
        } else if (ch==LEX_RAW_INT16) {
          let val = code.charCodeAt(i+1) | (code.charCodeAt(i+2)<<8);
          resultCode += val.toString();
          i+=2;
        } else if (ch<LEX_OPERATOR_START+TOKENS.length) // decoded other tokens
          resultCode += TOKENS[ch-LEX_OPERATOR_START];
        else {
          console.warn("Unexpected pretokenised string code:", ch);
          resultCode += code[i];
        }
      } else resultCode += code[i];
      lastCh = ch;
    }
    return resultCode;
  }

  Espruino.Plugins.Pretokenise = {
    init : init,
    sortOrder : 100, // after most plugins, before saveOnSend
    isTokenised : isTokenised, // could the given data be tokenised JS?
    untokenise : untokenise, // fn(code) convert a file containing tokens back into strings
    tokenise : tokenise // fn(code) convert a file containing tokens back into strings
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/plugins/saveOnSend.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk),
                Victor Nakoryakov (victor@amperka.ru)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Wrap whole code in `onInit` function before send and save() it
  after upload. Wrapping is necessary to avoid execution start
  before save() is executed
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    Espruino.Core.Config.add("SAVE_ON_SEND", {
      section : "Communications",
      name : "Save on Send",
      descriptionHTML : 'How should code be uploaded? See <a href="http://www.espruino.com/Saving" target="_blank">espruino.com/Saving</a> for more information.<br>'+
                        "<b>NOTE:</b> Avoid 'Direct to flash, even after <code>reset()</code>' for normal development - it can make it hard to recover if your code crashes the device.",
      type : {
    // -1: is used by the app loader to signify that we want the code as-is (app loader adds write statements). Allows pretokenise to correctly check if we're writing to RAM or not
        0: "To RAM (default) - execute code while uploading. Use 'save()' to save a RAM image to Flash",
        1: "Direct to Flash (execute code at boot)",
        2: "Direct to Flash (execute code at boot, even after 'reset()') - USE WITH CARE",
        3: "To Storage File (see 'File in Storage to send to')",
      },
      defaultValue : 0
    });
    Espruino.Core.Config.add("SAVE_STORAGE_FILE", {
      section : "Communications",
      name : "Send to File in Storage",
      descriptionHTML : "If <code>Save on Send</code> is set to <code>To Storage File</code>, this is the name of the file to write to.",
      type : "string",
      defaultValue : "myapp"
    });
    Espruino.Core.Config.add("LOAD_STORAGE_FILE", {
      section : "Communications",
      name : "Load after saving",
      descriptionHTML : "This applies only if saving to Flash (not RAM)",
      type : {
        0: "Don't load",
        1: "Load default application",
        2: "Load the Storage File just written to"
      },
      defaultValue : 2
    });
    Espruino.addProcessor("transformForEspruino", function(code, callback) {
      wrap(code, callback);
    });
  }

  function wrap(code, callback) {
    // convert any non-0..255 charcodes to UTF8 encoding
    code = Espruino.Core.Utils.asUTF8Bytes(code);
    // Depending on settings, choose how we package code for upload (see Espruino.Core.Send.SEND_MODE_* constants)
    var isFlashPersistent = Espruino.Config.SAVE_ON_SEND == 2;
    var isStorageUpload = Espruino.Config.SAVE_ON_SEND == 3;
    var isSDCardUpload = Espruino.Config.SAVE_ON_SEND == 4;
    var isFlashUpload = Espruino.Config.SAVE_ON_SEND == 1 || isFlashPersistent || isStorageUpload;
    if (!isFlashUpload && !isSDCardUpload) return callback(code);

    var asJS = Espruino.Core.Utils.toJSONishString;

    // Check environment vars
    var hasStorage = false;
    var ENV = Espruino.Core.Env.getData();
    if (ENV &&
        ENV.VERSION_MAJOR &&
        ENV.VERSION_MINOR!==undefined) {
      if (ENV.VERSION_MAJOR>1 ||
          ENV.VERSION_MINOR>=96) {
        hasStorage = true;
      }
    }
    const CHUNKSIZE = 1024;

     // Now create the commands to do the upload
    console.log("Uploading "+code.length+" bytes to flash");
    // FIXME: We should use Serial's Connection class packet stuff for file uploads
    if (!hasStorage) { // old style
      if (isStorageUpload || isSDCardUpload) {
        Espruino.Core.Notifications.error("You have pre-1v96 firmware - unable to upload to Storage");
        code = "";
      } else {
        Espruino.Core.Notifications.error("You have pre-1v96 firmware. Upload size is limited by available RAM");
        code = "E.setBootCode("+asJS(code)+(isFlashPersistent?",true":"")+");";
      }
    } else if (isSDCardUpload) {
      var filename = Espruino.Config.SAVE_STORAGE_FILE;;
      var newCode = [ `let _ul = E.openFile(${asJS(filename)},"w");` ];
        var len = code.length;
      for (var i=0;i<len;i+=CHUNKSIZE)
        newCode.push(`_ul.write(${asJS(code.substr(i,CHUNKSIZE))});`);
      newCode.push(`_ul.close();delete _ul;`);
      code = newCode.join("\n");
    } else { // new style
      var filename;
      if (isStorageUpload)
        filename = Espruino.Config.SAVE_STORAGE_FILE;
      else
        filename = isFlashPersistent ? ".bootrst" : ".bootcde";
      if (!filename || filename.length>28) {
        Espruino.Core.Notifications.error("Invalid Storage file name "+JSON.stringify(filename));
        code = "";
      } else {
        var newCode = [];
        var len = code.length;
        newCode.push('require("Storage").write('+asJS(filename)+','+asJS(code.substr(0,CHUNKSIZE))+',0,'+len+');');
        for (var i=CHUNKSIZE;i<len;i+=CHUNKSIZE)
          newCode.push('require("Storage").write('+asJS(filename)+','+asJS(code.substr(i,CHUNKSIZE))+','+i+');');
        code = newCode.join("\n");
      }
    }
    if (Espruino.Config.LOAD_STORAGE_FILE==2 && isStorageUpload)
      code += "\nload("+asJS(filename)+")\n";
    else if (Espruino.Config.LOAD_STORAGE_FILE!=0)
      code += "\nload()\n";
    else code += "\n";
    callback(code);
  }

  Espruino.Plugins.SaveOnSend = {
    init : init,
    sortOrder : 1000, // after most plugins, before setTime
  };
}());
/* --------------------------------------------------------------
         EspruinoTools/plugins/setTime.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Ability to set the current time in Espruino
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    Espruino.Core.Config.add("SET_TIME_ON_WRITE", {
      section : "Communications",
      name : "Set Current Time",
      description : "When sending code, set Espruino's clock to the current time",
      type : "boolean",
      defaultValue : true,
      onChange : function(newValue) {  }
    });

   // When code is sent to Espruino, append code to set the current time
   Espruino.addProcessor("transformForEspruino", function(code, callback) {
     if (Espruino.Config.SET_TIME_ON_WRITE) {
       var time = new Date();
       code = "setTime("+(time.getTime()/1000)+");E.setTimeZone("+(-time.getTimezoneOffset()/60)+")\n"+code;
     }
     callback(code);
   });
  }

  Espruino.Plugins.SetTime = {
    init : init,
    sortOrder : 1100, // after pretty much everything, speficically saveOnSend
  };
}());
/* --------------------------------------------------------------
         js/plugins/tutorial.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  The Espruino tutorial
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var TUTORIALS_DIR = "data/tutorials/";

  var tutorialData = [];
  var tutorialStep = 0;
  var tutorialLastInputLine = undefined;
  var tutorialWatcherInterval = undefined;

  function init() {
    Espruino.Core.App.addIcon({
      id: "help",
      icon: "help",
      title : "Help",
      order: -95,
      area: {
        name: "toolbar",
        position: "right"
      },
      menu: [{
        id: "tutorial",
        icon: "help",
        title: "Tutorial",
        order: 100,
        click: function(){
          if (!hasTutorial()) {
            Espruino.Core.MenuPortSelector.ensureConnected(function() {
              loadTutorialURL(TUTORIALS_DIR+"1.js");
            });
          } else {
            stopTutorial();
          }
        }
      }]
    });

    // if terminal was cleared this may have been to remove the tutorial, so do this if needed
    Espruino.addProcessor("terminalClear", function(data, callback) {
      if (hasTutorial())
        stopTutorial();
      callback(data);
    });
    // If disconnect, stop tutorial too
    Espruino.addProcessor("disconnected", function(data, callback) {
      if (hasTutorial())
        stopTutorial();
      callback(data);
    });
  }

  function loadTutorialText(text) {
    var step = { text : "", code : "" };
    tutorialData = [ ];
    var lines = text.split("\n");
    for (var i in lines) {
      var l = lines[i];
      if (l.substr(0,2)=="//") {
        step.text += l.substr(2).trim()+"\n";
      } else
        step.code += l+"\n";
      if (l=="" && step.text!="") {
        step.code = step.code.trim();
        step.text = step.text.trim();
        tutorialData.push(step);
        step = { text : "", code : "" };
      }
    }
    if (step.text!="")
      tutorialData.push(step);
    // first get a list of declarations
    var DECLS = [];
    var boardData = Espruino.Core.Env.getBoardData();
    if (boardData && boardData.BOARD)
      DECLS.push(boardData.BOARD);
    // detect comments like <PIXLJS>foo</PIXLJS> and <!PIXLJS>foo</!PIXLJS>
    // and crop them out if they don't match our board
    tutorialData.forEach(step => {
      var ifBoardRegex = /<(!?[A-Z]+)>(.*?)<\/\1>/s;
      var ifBoard = step.text.match(ifBoardRegex);
      while (ifBoard) {
        var decl = ifBoard[1];
        var txt = ifBoard[2];
        var negated = decl[0]=="!";
        if (negated) decl = decl.substring(1);
        if (DECLS.includes(decl) == negated) txt="";
        // replace text and try again
        step.text = step.text.substring(0,ifBoard.index) + txt + step.text.substring(ifBoard.index+ifBoard[0].length);
        ifBoard = step.text.match(ifBoardRegex);
      }
    });

    // test
    displayTutorialStep();
  }

  function loadTutorialURL(url) {
    Espruino.Core.Utils.getURL( url, function(data) {
      loadTutorialText(data);
      if (tutorialWatcherInterval===undefined)
        tutorialWatcherInterval = setInterval(tutorialWatcher, 1000);
    });
  }

  function hasTutorial() {
    return tutorialData.length != 0;
  }

  function stopTutorial() {
    tutorialData = [];
    tutorialStep = 0;
    tutorialLastInputLine = undefined;
    if (tutorialWatcherInterval) clearInterval(tutorialWatcherInterval);
    tutorialWatcherInterval = undefined;
    Espruino.Core.Terminal.clearExtraText();
   }

  function displayTutorialStep() {
    var inputLine = Espruino.Core.Terminal.getInputLine(0);
    var text = '<div class="tutorial_text">'+Espruino.Core.HTML.markdownToHTML(tutorialData[tutorialStep].text)+'<br/>';
    if (tutorialData[tutorialStep].code != "")
      text += '<div class="tutorial_code">'+Espruino.Core.Utils.escapeHTML(tutorialData[tutorialStep].code).replace(/\n/g,"<br/>")+'</div>';
    text += '</div>';
    Espruino.Core.Terminal.setExtraText((inputLine===undefined)?0:inputLine.line, text);
  }

  function isCodeEqual(a,b) {
    console.log("Compare");
    console.log("A> "+JSON.stringify(a));
    console.log("B> "+JSON.stringify(b));
    // now compare streams of tokens
    var la = Espruino.Core.Utils.getLexer(a);
    var tka = la.next();
    var lb = Espruino.Core.Utils.getLexer(b);
    var tkb = lb.next();
    while (tka!==undefined || tkb!==undefined) {
      if (tka==undefined || tkb==undefined || tka.str!=tkb.str) {
        return false;
      }
      tka = la.next();
      tkb = lb.next();
    }
    return true;
  }

  function tutorialWatcher() {
    if (tutorialStep >= tutorialData.length) return;

    // Find out if we've accidentally skipped some input lines
    var linesPast = 0;
    var line = Espruino.Core.Terminal.getInputLine(linesPast);
    if (line===undefined) return;
    var currentInputLine = line.line;
    if (tutorialLastInputLine===undefined) tutorialLastInputLine = line.line;
    while (line!==undefined && line.line>tutorialLastInputLine) {
      linesPast++;
      line = Espruino.Core.Terminal.getInputLine(linesPast);
    }
    tutorialLastInputLine = currentInputLine;
    // if we have, try and handle them
    while (linesPast>0) {
      console.log("Checking previous line "+linesPast);
      line = Espruino.Core.Terminal.getInputLine(linesPast);
      // user has entered the correct command - let's move to next
      if (line!==undefined && isCodeEqual(line.text,tutorialData[tutorialStep].code) &&
          tutorialStep+1 < tutorialData.length) {
        tutorialStep++;
        displayTutorialStep();
      }
      linesPast--;
    }
  }

  Espruino.Plugins.Tutorial = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         js/plugins/webcam.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  An Example Plugin
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  navigator.getUserMedia  = navigator.getUserMedia || navigator.webkitGetUserMedia ||
                      navigator.mozGetUserMedia || navigator.msGetUserMedia;


  var icon;
  var webCamStream;

  function init() {
    if (!navigator.getUserMedia) return;

    Espruino.Core.Config.add("SHOW_WEBCAM_ICON", {
      section : "General",
      name : "Webcam Icon",
      description : "Show an icon that allows the terminal to be overlaid on the view from a Webcam",
      type : { 0 : "No",
               1 : "Yes",
               2 : "Yes, add 50% brightness",
               3 : "Yes, add 100% brightness" },
      defaultValue : 0,
      onChange : function(newValue) { showIcon(newValue); }
    });
    showIcon(Espruino.Config.SHOW_WEBCAM_ICON);
    Espruino.Core.Config.add("WEBCAM_CONSTRAINTS", {
      section : "General",
      name : "Webcam Resolution",
      description : "When using the Webcam, should we request a specific resolution?",
      type : { 0 : "Default",
               1 : "Request 720p",
               2 : "Request 1080p",
               3 : "Force 720p (will fail if unsupported)",
               4 : "Force 1080p (will fail if unsupported)",
               5 : "Force 1080p25 (will fail if unsupported)" },
      defaultValue : 0,
      onChange : function(newValue) { showIcon(newValue); }
    });
  }

  var CONSTRAINTS = {
        0 : {},
        1 : { width: {ideal:1280}, height: {ideal:720} },
        2 : { width: {ideal:1920}, height: {ideal:1080} },
        3 : { width: {exact:1280}, height: {exact:720}, },
        4 : { width: {exact:1920}, height: {exact:1080}, },
        5 : { width: {exact:1920}, height: {exact:1080}, frameRate: {exact:25} },
  };

  function showIcon(show) {
    show = 0|show;
    var hadWebCam = hasWebCam();
    if (hadWebCam) toggleWebCam();
    var vid = document.getElementById("videotag");
    if (vid) vid.remove();
    if (show) {
      icon = Espruino.Core.App.addIcon({
        id: "webcam",
        icon: "webcam",
        title : "WebCam View",
        order: -90,
        area: {
          name: "terminal",
          position: "top"
        },
        click: toggleWebCam
      });
      var filters = "background-color:black;position:absolute;left:0;top:0;width:100%;height:100%;";
      filters += "object-fit:cover;";
      if (show==2) filters += "filter: brightness(150%);";
      if (show==3) filters += "filter: brightness(200%);";
      $('<video autoplay id="videotag" style="'+filters+'"></video>').prependTo(".editor--terminal .editor__canvas");
    } else {
      hadWebCam = false;
      if (icon!==undefined) {
        icon.remove();
        icon = undefined;
      }
    }
    if (hadWebCam) toggleWebCam();
  }

  function hasWebCam() {
    return $('#terminal').hasClass("terminal--webcam");
  }

  function displayMediaStream(mediaStream) {    
    webCamStream = mediaStream;    
    if (mediaStream===undefined) { // if nothing, remove the element
      $('video').attr('src', "");
      $("#terminal").removeClass("terminal--webcam");
      return;
    }
    // otherwise create video element
    var vid = document.getElementById("videotag");
    try {
      vid.srcObject = mediaStream;
    } catch (error) {
      vid.src = URL.createObjectURL(mediaStream);
    }
    setTimeout(function cb() {
      if (vid.videoWidth)
        console.log("Webcam video dimensions: "+vid.videoWidth+"x"+vid.videoHeight);
      else
        setTimeout(cb, 1000);
    }, 1000);
    $("#terminal").addClass("terminal--webcam");
  }

  function enableWebCam(constraints) {
    var window_url = window.URL || window.webkitURL;    
    console.log("Requesting WebCam ", constraints);
    navigator.getUserMedia(constraints, function(mediaSource) {
      console.log("Webcam started");
      displayMediaStream(mediaSource);
      Espruino.callProcessor("webcam", { visible : true, stream : mediaSource });
    }, function(e) {
      console.log('onError!', e);
      Espruino.Core.Notifications.error("Problem initialising WebCam");
    });
  }

  function getVideoConstraints() {
    var term = document.querySelector(".editor__canvas__terminal");
    if (term)
      CONSTRAINTS[0] =  { width: term.clientWidth, height: term.clientHeight };
    var i = 0|Espruino.Config.WEBCAM_CONSTRAINTS;
    if (i<0 || i>=CONSTRAINTS.length) i=0;
    return CONSTRAINTS[i];
  }

  function enableWebCamDeviceId(id) {
    var videoConstraints = getVideoConstraints();
    if (id!==undefined && id!="")
      videoConstraints.deviceId = { exact: id };
    enableWebCam({
        audio: false,
        video: videoConstraints
    });
  }

  function showWebCamChooser(sources) {
    var popup = Espruino.Core.App.openPopup({
      title: "Select a webcam...",
      contents: Espruino.Core.HTML.htmlLoading(),
      position: "center",
    });
    var items = sources.map(function(source) {
      return {
        icon : "icon-webcam",
        title : source.label,
        callback : function() {
          popup.close();
          enableWebCamDeviceId(source.id);
        }
      };
    });
    if (!items.length)
      items = [{
        icon : "icon-webcam",
        title : "No Webcams found",
        callback : function() {
          popup.close();
        }
      }];

    popup.setContents(Espruino.Core.HTML.domList(items));
  }

  function enableWebCamOrChoose(sources) {
    if (sources.length == 1) {
      enableWebCamDeviceId(sources[0].id);
    } else {
      showWebCamChooser(sources);
    }
  }

  function toggleWebCam() {
    if (!hasWebCam()) {
      navigator.mediaDevices.enumerateDevices().then(function(data){
        var sources = [];
        for (var i = 0; i < data.length; i++) {
          if (data[i].kind == "videoinput")
            sources.push({
              id : data[i].deviceId,
              label : data[i].label.length ? data[i].label : "Video Device "+(sources.length+1)
            });
        }
        enableWebCamOrChoose(sources);
      });
    } else {
      if (webCamStream.stop) // deprecated
        webCamStream.stop();
      if (webCamStream.getTracks) // new hotness
        webCamStream.getTracks().forEach(track => track.stop())
      displayMediaStream(undefined);
      Espruino.callProcessor("webcam", { visible : false });
    }
    Espruino.Core.Terminal.focus();
  };

  Espruino.Plugins.Webcam = {
    init : init,
    displayMediaStream : displayMediaStream,
  };
}());
/* --------------------------------------------------------------
         js/plugins/fontSize.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  An Example Plugin
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    Espruino.Core.Config.add("FONT_SIZE", {
      section : "General",
      name : "Font Size",
      description : "The size of font used in the Terminal and Code Editor windows",
      type : {8:8,10:10,12:12,14:14,18:18,24:24,32:32},
      defaultValue : 12,
      onChange : setFontSize
    });

    setFontSize(Espruino.Config.FONT_SIZE);
  }

  function setFontSize(size) {
    $("#terminal,.CodeMirror").css("font-size", size+"px");
    if (Espruino.Core.EditorJavaScript)
      Espruino.Core.EditorJavaScript.getEditors().forEach(editor => editor.codeMirror.refresh());
  }

  Espruino.Plugins.FontSize = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         js/plugins/uiMode.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 ------------------------------------------------------------------
  An Example Plugin
 ------------------------------------------------------------------
**/
"use strict";
(function(){
  
  function init() {
    Espruino.Core.Config.add("UI_MODE", {
      section : "General",
      name : "UI Mode",
      description : "Change the display density of the UI.",
      type : {"normal":"Normal", "compact":"Compact"},
      defaultValue : "Normal", 
      onChange :setUiMode
    });
    
    setUiMode(Espruino.Config.UI_MODE);
  }
  
  function setUiMode(mode) {
    if(mode == "compact")
      $("body").addClass("compact");
    else
      $("body").removeClass("compact");
  }
  
  Espruino.Plugins.UiMode = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         js/plugins/urlHandler.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Handle URLS of the form http://www.espruino.com/webide?...
  These are sent from background.js and are picked up by the Web IDE
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    // Try and automatically handle the URL if we're served from somewhere we know
    if (typeof window!=="undefined" &&
        window.location &&
        (window.location.origin=="https://localhost" ||
         window.location.origin=="https://espruino.github.io" ||
         window.location.origin=="https://www.espruino.com")) {
      setTimeout(function() {
        handle(window.location.href);
      }, 200);
    }
  }

  function handleQuery(key, val) {
    var promise = Promise.resolve();
    switch(key){
      case "code": // Passing "encodedURIcomponent code" within the URL
        Espruino.Core.File.setJSCode(val);
        break;
      case "codeurl": // Passing a URL for code within the URL
        promise = promise.then(new Promise(function(resolve,reject) {
          Espruino.Core.File.setJSCode("// Loading from "+val+"...");
          Espruino.Core.Utils.getURL(val, function(data) {
            if (data!==undefined) {
              Espruino.Core.File.setJSCode(data);
              resolve();
            } else {
              Espruino.Core.File.setJSCode("// Error loading "+val);
              reject();
            }
          });
        }));
        break;
      case "gist": // Get code from a gist number in the URL
        promise = promise.then(new Promise(function(resolve,reject) {
          Espruino.Core.File.setJSCode("// Loading Gist "+val+"...");
          Espruino.Core.Utils.getJSONURL("https://api.github.com/gists/"+ val, function(data){
            if(data && data.files){
              var keys = Object.keys(data.files);
              if(keys.length > 0){
                Espruino.Core.File.setJSCode(data.files[keys[0]].content);
                resolve();
              } else reject();
            } else {
              Espruino.Core.File.setJSCode("// Error loading Gist "+val);
              reject();
            }
          });
        }));
        break;
      case "upload": // Get "encodedURIcomponent code" from URL and upload it
        promise = promise.then(new Promise(function(resolve,reject) {
          Espruino.Core.MenuPortSelector.ensureConnected(function() {
            Espruino.Core.Terminal.focus(); // give the terminal focus
            Espruino.callProcessor("sending");
            Espruino.Core.File.getEspruinoCode(function(code) {
              Espruino.Core.CodeWriter.writeToEspruino(code, function() {
                resolve();
              });
            });
          });
        }));
        break;
      case "dev": // ?dev=BLE_devicename can restrict what we connect to
        Espruino.Config.WEB_SERIAL = false;
        Espruino.Config.WEB_BLUETOOTH_FILTER = val;
        break;
      case "settings":
        Espruino.Plugins.SettingsProfile.updateFromJson(val);
        break;
    }
  }

  function handle(url) {
    console.log("Handling URL "+JSON.stringify(url));
    url = (url);
    var h = url.indexOf("#");
    var q = url.indexOf("?");
    if (h>=0) {
      var hash = (q>h) ? url.substr(h+1,q) : url.substr(h+1);
      if (hash.substr(0,7)=="http://" ||
          hash.substr(0,8)=="https://") {
        handleQuery("codeurl",hash);
      }
    }
    if (q<0) return;
    var query = url.substr(q+1).split("&");
    for (var i in query) {
      var eq = query[i].split("=");
      if (eq.length==1)
        handleQuery(eq[0],undefined);
      else if (eq.length==2)
        handleQuery(decodeURIComponent(eq[0]),decodeURIComponent(eq[1]));
      else
        console.warn("Didn't understand query section "+JSON.stringify(query[i]));
    }
  }


  Espruino.Plugins.URLHandler = {
    init : init,

    handle : handle, // handle a URL
  };
}());
/* --------------------------------------------------------------
         js/plugins/codeLink.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 ------------------------------------------------------------------
  A button that copies a URL containign the code to the clipboard 
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var icon;
  var MAX_URL = 2000;
  
  function init() {
    Espruino.Core.Config.add("SHOW_CODE_LINK_ICON", {
      section : "General",
      name : "Show Copy URL Icon",
      description : "Show an icon that will create a URL containing the code from the Code Editor and will copy it to the clipboard. Great for sharing your code on Twitter/Websites/etc",
      type : "boolean",
      defaultValue : false, 
      onChange : function(newValue) { showIcon(newValue); }
    });    

    showIcon(Espruino.Config.SHOW_CODE_LINK_ICON);
  }

  function showIcon(show) {
    if (show) {
      icon = Espruino.Core.App.addIcon({ 
        id: "codeLink",
        icon: "star", 
        title : "Copy URL for this code to the clipboard", 
        order: 300, 
        area: { 
          name: "code", 
          position: "bottom"
        },
        click: copyCodeLink
      });    
    } else {
      if (icon!==undefined) icon.remove();
    }
  }
  
  function copyCodeLink() {
    var code = Espruino.Core.File.getCurrentCode();
    var url = "http://www.espruino.com/webide?code="+encodeURIComponent(code);
    if (url.length > MAX_URL) {
      Espruino.Core.Notifications.error("Your code is too large for a URL (greater than "+MAX_URL+" characters)");
      return;
    }
    
    
    var copier = $('<textarea rows="1" cols="1"></textarea>').appendTo(document.body);
    copier.val(url).select();
    document.execCommand('copy');
    copier.remove();
    
    Espruino.Core.Notifications.info("URL Copied to clipboard");
  };
  
  Espruino.Plugins.CodeLink = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         js/plugins/testing.js
   -------------------------------------------------------------- */
/**
 Copyright 2014,2015 Juergen Marsch (juergenmarsch@googlemail.com)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Testing Plugin
 ------------------------------------------------------------------
**/
"use strict";
( function(){
  var p // for temp prototype
    , icon
    , datapoints = []
    , actionpoints = []
    , imageUrl = ""
    , testingFile = ""
    , testMode = "Form" // Form | Image
    , overlay
    , frequency = 1
    , testDescription = ""
    , testProject = ""
    , intervalName = "getExpressionsPoll"
    , polling = false
    , activePoll = true
    , pollPnt
    , testDebug = true
    , testLogging = false
    , testLoggingName = ""
    , flotData = []
    , flotChart
    , flotOptions = {legend:{noColumns:5,container:"#flotlegendholder"},grid:{hoverable:true},
        xaxis:{mode:"time",ticks:5},yaxes:[{},{min:0,max:1.05,show:false}]
      }
    , flotDatasetOptions = {lines:{ show:true},clickable:false,hoverable:false}
    , flotDatasetOptionsText = {points:{ show:true},yaxis:2,clickable:false,hoverable:true}
    ;

  // ========== Action ==========

  function Actionpoint(newValue) { // constructor / state
    var i,cmd = "";
    for(i in newValue){this[i] = newValue[i];}
    this.type = (this.type === "text") ?"string" : this.type;
  };
  // Action behavior
  p = Actionpoint.prototype;
  p.getValueField = function(label) { return $("input[label='" + label + "']")[0];}
  p.setLocation = function(x,y) {this.x = x;this.y = y;};
  p.update = function(expression,type) {
    this.expression = expression;
    this.type = type;
  };
  p.assign = function() {
    var cmd = "";
    switch(this.type){
      case "number":
        cmd = this.expression + '=' + this.getValueField(this.label).value + ';';
        break;
      case "boolean":
        cmd = this.expression + '=' + this.getValueField(this.label).checked + ';';
        break;
      case "string":
        cmd = this.expression + '="' + this.getValueField(this.label).value + '";';
        break;
      case "command":
        cmd = this.expression + ';';
        break;
    }
    if (Espruino.Core.Serial.isConnected()) {
      Espruino.Core.Serial.write('\x03\x10' + cmd + '\n');
    } else {
      notification("E","nc");
    }
  };
  p.getHtmlEdit = function(i) {
	var html = "";
	html = "<tr>";
	html += '<th class="alterActionPoint" title="' + this.expression + '\n' + this.type + '">' + this.label + '</th>';
	html += '<th>';
	switch(this.type){
	  case "number":
	    html += '<input type="text" class="testing_input" label="' + this.label + '" size="10">';
		break;
	  case "boolean":
		html += '<input type="checkbox" class="testing_input" label"' + this.label + '">';
		break;
	  case "string":
		html += '<input type="text" class="testing_input" label="' + this.label + '" size="30">';
		break;
	  case "command":
		break;
	}
	html += '<button i="' + i + '" class="executeActionPoint"></th>';
	html += '<th><button class="dropActionPoint" i="' + i.toString() + '">Drop</button></th>';
	html += '</tr>';
	return html;
  };
  p.getSetxyHtml = function(i) {
    var html = "";
    html += '<tr><th class="ap_class" pnt="' + i + '">Assign</th>';
    html += '<td colspan="2" title="' + this.expression + '">' + this.label + '</td></tr>';
    return html;
  };
  // /Action

  // ========== Datapoint ==========

  function Datapoint(newValue) { // constructor / state
    var i;
    for(i in newValue){this[i] = newValue[i];}
    this.type = (this.type === "text") ? "string" : this.type;
    this.points = [];
  }
  // Datapoint behavior
  p = Datapoint.prototype;
  p.setLocation = function(x,y,display){this.x = x; this.y = y; this.display = display;};
  p.update = function(expression,type){ this.expression = expression; this.type = type;};
  p.addValue = function(Value){
    if(this.points.length>99){ this.points.shift(); }
    this.points.push(Value);
  };
  p.reset = function(){ this.points = []; };
  p.getHtmlEdit = function(i){
    var html = "";
    html += '<tr>';
    html += '<td class="alterDataPoint" title="' + this.expression + '\n' + this.type + '">' + this.label + '</td>';
    html += '<th><button class="dropDataPoint" i="' + i.toString() + '">Drop</button></th>';
    html += '<tr>';
    return html;
  };
  p.getSetxyHtml = function(i){
    var dpHtml,html = "";
    dpHtml = '<select id="DPid_"><option value="none">none<option value="T">String<option value="N">Number';
    dpHtml += '<option value="A">Alarm<option value="W">Warning<option value="S">Status<option value="B">Bar';
    dpHtml += '<option value="G">Gauge<option value="SP">Speech<option value="SW">Switch Testing</select>';
    html += '<tr><th class="dp_class" pnt="' + i + '" title="' + this.x + ',' + this.y + '"><u>Assign</u></th>';
    html += '<td title="' + this.expression + '">' + this.label  + '</td>';
    html += '<td>'+ dpHtml.replace(/DPid_/,"DPid_" + i) + '</td></tr>';
    return html;
  };

  function imageOverlay(id){
    var canvas,c,octx,scaleX,scaleY,p,me = this;
    canvas = $(id);
    c = canvas[0];
    p = $(c).parent();
    c.width = p.width();
    c.height = p.height();
    octx = c.getContext('2d');
    scaleX = c.width / 1000;
    scaleY = c.height / 1000;
    function calcX(x){ return x * scaleX;}
    function calcY(y){ return y * scaleY;}
    function action(x,y){
      var d,i,a;
      for(i = 0; i < actionpoints.length;i++){
        a = actionpoints[i];
        if(a.x !== 0){
          d = Math.sqrt((a.x-x)*(a.x-x) + (a.y-y)*(a.y-y));
          if(d<20){
            a.assign();
          }
        }
      }
    }
    this.drawPoints = function(dt){
      var d,v,i,j;
      overlay.clear();
      for(i in dt){
        v = dt[i];
        for(j = 0; j < datapoints.length; j++){
          d = datapoints[j];
          if(d.label === i){
            switch(d.display){
              case "A":this.drawAlarm(d,v); break;
              case "W":this.drawAlarm(d,v);break;
              case "S":this.drawAlarm(d,v);break;
              case "B":this.drawBar(d,v);break;
              case "N":this.drawText(d,parseFloat(v,2));break;
              case "T":this.drawText(d,v);break;
              case "SW":this.reload(v + '.json');break;
              case "SP":this.speak(v);break;
              case "G":this.drawGauge(d,v);break;
            }
          }
        }
      }
    }
    this.speak = function(t){ if(t !== "") Espruino.Plugins.Notification_Sound.speak(t);};
    this.clear = function(){ canvas.clearCanvas(); };
    this.drawAlarm = function(d,v){
      var s,c;
      switch(d.display){case "A":c="red";break;case "W":c = "orange";break;case "S":c = "green";break;}
      if(v > 0){
        s = {fillStyle:c,x:calcX(d.x),y:calcY(d.y),width:20,height:20};
        $.extend(s,(typeof(d.style) === "undefined")?{}:d.style);
        s.fillStyle = (typeof(s.color) === "undefined")?c:s.color;
      }
      else{
        s = {strokeStyle:c,strokeWidth:1,x:calcX(d.x),y:calcY(d.y),width:20,height:20};
        $.extend(s,(typeof(d.style) === "undefined")?{}:d.style);
        s.strokeStyle = (typeof(s.color) === "undefined")?c:s.color;
      }
      s.width = calcX(s.width); s.height = calcY(s.height);
      canvas.drawEllipse(s);
    };
    this.drawBar = function(d,v){
      var s;
      s = {strokeStyle:"#000",fromCenter: false, x: calcX(d.x), y: calcY(d.y),width: 20,height: 100};
      $.extend(s,(typeof(d.style)  === "undefined")?{}:d.style);
      s.width = calcX(s.width);s.height = -calcX(s.height);
      canvas.drawRect(s);
      s = {fillStyle:"blue",fromCenter: false, x: calcX(d.x), y: calcY(d.y),width: 20,height: 100};
      $.extend(s,(typeof(d.style)  === "undefined")?{}:d.style);
      s.width = calcX(s.width);s.height = -calcX(v / 100 * s.height);
      canvas.drawRect(s);
    };
    this.drawText = function(d,t){
      var s;
      s = {fillStyle: "black",x: calcX(d.x), y: calcY(d.y),fontSize: 14,fontFamily: "Arial",text: t};
      $.extend(s,(typeof(d.style)  === "undefined")?{}:d.style);
      canvas.drawText(s);
    };
    this.drawGauge = function(d,v){
      var s;
      s = {x:calcX(d.x),y:calcY(d.y),width:100,height:100,angle:270,
          strokeCase:"#000",strokeBackground:"#8f8",strokeValue:"#00f",strokePointer:"#f00"};
      $.extend(s,(typeof(d.style)  === "undefined")?{}:d.style);
      s.width = calcX(s.width); s.height = calcY(s.height);
      var aStep = Math.PI /180,
          ePX = s.x + (s.width / 2 * 0.8 * Math.cos(calcAngle(calcTargetA(v)))),
          ePY = s.y + (s.height / 2 * 0.6 * Math.sin(calcAngle(calcTargetA(v))));
      function calcTargetA(v){ return -s.angle/2 + s.angle/100 * v;}
      function calcAngle(a){ return (a + 270) * aStep; }
      canvas.drawEllipse({
        strokeStyle:s.strokeCase,strokeWidth:1,
        x:s.x,y:s.y,width:s.width,height:s.height
      }).drawArc({
        strokeStyle:s.strokeBackground,strokeWidth:9,
        x:s.x,y:s.y,radius:s.width / 2 * 0.8,
        start:-s.angle/2,end:s.angle/2
      }).drawArc({
        strokeStyle:s.strokeValue,strokeWidth:4,
        x:s.x,y:s.y,radius:s.width / 2 * 0.8,
        start:-s.angle/2,end:-s.angle/2 + v/100*s.angle
      }).drawEllipse({
        strokeStyle:s.strokePointer,strokeWidth:1,
        x:s.x,y:s.y,width:s.width / 20,height:s.height / 20
      }).drawLine({
        strokeStyle:s.strokePointer,strokeWidth: 2,
        rounded: true,endArrow: true,arrowRadius: 5,arrowAngle: 60,
        x1:s.x,y1:s.y,x2:ePX,y2:ePY
      });
    };
    this.bind = function(){
      $(c).unbind().click(function(e){
        var x,y;
        x = parseInt(e.offsetX * 1000 / p.width(),0);
        y = parseInt(e.offsetY * 1000 / p.height(),0);
        if(Espruino.Core.Serial.isConnected()){
          action(x,y);
        }
        else{
          assignImageXYtoTestingItem(x,y);
        }
      });
    };
    this.reload = function(fileName){
      if(fileName !== testingFile){
        stopGetExpression();
        setTimeout(function(){
          newTestingFile(fileName,function(){runGetExpression();});
        },100);
      }
    };
  }

  function notification(type,pnt){
    var t;
    switch(pnt){
      case "nrm": t = "Not available in running mode";break;
      case "orm": t = "Only available in running mode";break;
      case "nid": t = "Cannot switch mode, no Image defined";break;
      case "nc": t = "Not connected to board";break;
      case "nan": t = "Replaced non alphanumeric by underline";break;
      case "dpc": t = "Existing datapoint altered";break;
      case "apc": t = "existing actionpoint altered";break;
      case "nsl": t = "stop testing and restart to switch logging";break;
      default: t = "Sorry, unknown message (pnt="+pnt+")";break;
    }
    switch(type){
      case "E": Espruino.Core.Notifications.error(t);break;
      case "W": Espruino.Core.Notifications.warning(t);break;
      case "I": Espruino.Core.Notifications.info(t);break;
      default: Espruino.Core.Notifications.info(t);break;
    }
  }

  function replaceNonAlphaNumeric(v){
    var r = v;
    if(r.match(/\W+/g, "_")){
      notification("W","nan");
      r = r.replace(/\W+/g, "_");
    }
    return r;
  }

  function init() {
    Espruino.Core.Config.addSection("Testing", {
      sortOrder:600,
      description: "Displays a graph of values over time",
      getHTML: function(callback){
        var url,html;
        url = "https://www.youtube.com/playlist?list=PLWusBqvaPOec0RJ-_iqPkvCAeKYyIb6mH;";
        html = '<h3>Videos on youtube</h3>';
        html += 'Some videos are available on playlist for <a href="' + url + '" target="_blank">Espruino Testing</a>';
        callback(html);
      },
      tours: { "Testing Tour":"testing.json", "Extended Testing Tour":"testingExt.json" }
    });
    Espruino.Core.Config.add("ENABLE_Testing", {
      section : "Testing",
      name : "Enable Testing Plugin (BETA)",
      description : "This enables window to test application on Espruino",
      type : "boolean",
      defaultValue : false,
      onChange: function(newValue){showIcon(newValue);}
    });
    Espruino.addProcessor("getWatched", function (data, callback) {
      if(Espruino.Config.ENABLE_Testing){
        if(polling){setTestingValues(data);}
      }
      callback(data);
    });
    Espruino.addProcessor("disconnected",function(data, callback){
      if(polling){stopGetExpression();}
      callback(data);
    });
    $("<div id='flottooltip'></div>").css({
      position: "absolute",display: "none",border: "1px solid #fdd",
      padding: "2px","background-color": "#fee",opacity: 0.80
    }).appendTo("body");
    showIcon(Espruino.Config.ENABLE_Testing);
    $('<div id="divTesting" class="Testing" style="display:none;border:none;height:100%;width:100%;"></div>').appendTo(".editor--terminal .editor__canvas");
    loadInitial(resetForm);
    function resetForm(){ showDataPoints();showActionPoints(); }
  }

  function loadInitial(callback){
    $('<div id="divTesting" class="Testing" style="display:none;border:none;height:100%;width:100%;"></div>').appendTo(".editor--terminal .editor__canvas");
    $.get("data/testing_initial.html",function(data){
      $("#divTesting").html(data);
      setTimeout(function(){
        $("#saveTesting").button({ text:false, icons: { primary: "ui-icon-disk"} }).unbind().click(testingSaveAs);
        $("#loadTesting").button({ text:false, icons: { primary: "ui-icon-script"} }).unbind().click(loadTesting);
        $("#testingExpressionRun").button({ text:false, icons: { primary: "ui-icon-play"} }).unbind().click(runGetExpression);
        $("#testingExpressionStop").button({ text:false, icons: { primary: "ui-icon-stop"} }).unbind().click(stopGetExpression);
        $("#testingExpressionStop").button('option','disabled', true);
        $("#testingLog").unbind().click(switchLogging);
        $("#openTestingLog").button({ text:false, icons: { primary:"ui-icon-image"} }).unbind().click(openTestingLog);
        $("#testProperties").unbind().click(showTestingProperties);
        showDataChart();
      },50);
    },"html");
    if(callback){ callback(); }
  }

  function testingSaveAs(){
    resetAllDataPoints();
    if (polling) {
      notification("W","nrm");
    } else {
      var html
        = '<table width="100%">'
        +   '<tr><th>Name</th></tr>'
        +   '<tr><td><input id="saveTestingName" type="text" value="'
                + testingFile.split(".")[0]
                + '" size="20" maxlength="40"></td></tr>'
        +   '<tr><td><button class="saveTestingBtn">Save</button></td></tr>'
        + '</table>'
        ;
      Espruino.Core.App.openPopup({
        position: "relative",
        title: "Save Testing as",
        id: "savetestingTab",
        contents: html
      });
      setTimeout(function(){
        $(".saveTestingBtn").button({ text:true, icons: { primary: "ui-icon-disk"} }).click(testingSaveAsDo);
      },10);
    }
  } // /testingSaveAs

  function testingSaveAsDo() {
    var fileName = $("#saveTestingName").val();
    $("#testingName").html("(<i><b>" + fileName + "</b></i>)");
    var dt = {
      imageUrl:imageUrl,testMode:testMode,frequency:frequency,activePoll:activePoll,
      testDescription:testDescription,testProject:testProject,
      debug:testDebug,dataPoints:datapoints,actionPoints:actionpoints };
    Espruino.Plugins.Project.saveFile("testing/" + fileName + ".json",JSON.stringify(dt,null,2));
    Espruino.Core.App.closePopup();
  } // /testingSaveAsDo

  function loadTesting() {
    if (polling) {
      notification("W","nrm");
    } else {
      var header = '<table width="100%">';
      // uses loadDirHtml() aka getProjectTable() from projects.js - in a nutshell:
      // in list row template $name0 (display, without extension, $fileentry,
      // and $name are replaced for each *.json ext file found in directory.
      var row
        = '<tr"><th class="loadTestingEntry" title="load testing file" fileentry="$fileentry" filename="$name">'
        +     '<button class="loadTestingBtn"></button><span class="cursor:pointer; cursor:hand;"> $name0</span>'
        + '</th></tr>'
        ;
      var footer = '</table>';
      // loadDirHtml|getProjectTable(html,subDir,ext,header,row,footer,callback){...
      Espruino.Plugins.Project.loadDirHtml("","testing","JSON",header,row,footer,function(html){
        Espruino.Core.App.openPopup({
              position: "relative",
              title: "Load Testing",
              id: "loadtestingTab",
              contents: html
        });
        setTimeout(function(){
          $(".loadTestingBtn").button({ text:false, icons: { primary: "ui-icon-script"} });
          $(".loadTestingEntry").css({"cursor":"pointer"}).click(loadTestingFile);
        },10);
      });
    }
  }

  function loadTestingFile() {
    var fileName = $(this).attr("filename");
    newTestingFile(fileName,loadProject);
    Espruino.Core.App.closePopup();
  }

  function loadProject() {
    if(testProject !== ""){
      Espruino.Plugins.Project.loadFile("projects/" + testProject + ".js",function(data){
        Espruino.Core.File.setJSCode(data, {fileName:testProject + ".js"});
      });
    }
  }

  function newTestingFile(fileName,callback){
    Espruino.Plugins.Project.loadFile("testing/" + fileName,function(data){
      var i,dt = JSON.parse(data);
      datapoints = [];
      for(i = 0; i < dt.dataPoints.length; i++){ datapoints.push(new Datapoint(dt.dataPoints[i]));}
      actionpoints = [];
      for(i = 0; i < dt.actionPoints.length; i++){ actionpoints.push(new Actionpoint(dt.actionPoints[i]));}
      $("#testingName").html("(<i><b>" + fileName.split(".")[0] + "</b></i>)");
      if(typeof dt.imageUrl === "undefined") imageUrl = ""; else imageUrl = dt.imageUrl;
      if(typeof dt.frequency === "undefined") frequency = 1; else frequency = dt.frequency;
      if(typeof dt.activePoll === "undefined") activePoll = false; else activePoll = dt.activePoll;
      if(typeof dt.testMode ==="undefined") testMode = "Form"; else testMode = dt.testMode;
      if(typeof dt.Debug === "undefined") testDebug = true; else testDebug = dt.debug;
      if(typeof dt.testDescription === "undefined") testDescription = ""; else testDescription = dt.testDescription;
      if(typeof dt.testProject === "undefined") testProject = "";
      else{testProject = dt.testProject;}
      $("#testMode").val(testMode);
      testingFile = fileName;
      showTesting();
      if(callback) {callback();}
    });
  }

  function showTesting(){
    switch(testMode){
      case "Image": showDataImage(imageUrl); break;
      case "Form": showDataChart(); break;
    }
  }

  function showTestingProperties() {
    // #muet! needs styling - in general, need testing.css for styling in general
    var html = "";
    html +=     '<table id="testingPropertiesTab" width="100%" border="0" cellspacing="0" cellpadding="3">';
    html +=       '<tr><th width="25%">Description</th>';
    html +=         '<th width="75%"><textarea id="testDescription"';
    html +=           ' cols="35" rows="3"></textarea></th></tr>';
    html +=       '<tr><th title="optional .jpg file in testing folder">Image .jpg</th><th id="imageUrl">';
    html += Espruino.Plugins.Project.loadDirHtml(html,"testing","JPG",
                      '<select id="imageUrlList"><option>- none -</option>',
                      '<option>$name',
                      '</select>',
                    function(html){
      html +=       '</th></tr>';
      html +=     '<tr><th>Interval (secs)</th><th><input type="text" size="5" id="testingFrequency"></th></tr>';
      html +=     '<tr><th>Active Poll</th><th><input type="checkbox" id="testPollActive"></th></tr>';
      html +=     '<tr><th title="optional .js file in projects folder">Project .js</th><th id="projectUrl">';
      html += Espruino.Plugins.Project.loadDirHtml(html,"projects","JS",
                      '<select id="projectUrlList"><option>- none -</option>',
                      '<option>$name',
                      '</select>',
                    function(html){
        html +=     '</th></tr>';
        html +=     '<tr><th>Debug mode</th><th><input type="checkbox" id="testDebug"></th></tr>';
        if (!polling) {
          html +=   '<tr><th colspan="2" style="border-top:1px #CFCFCF solid;"><button id="hideAndStoreTestingPropertiesBtn">OK</button></th></tr>';
        }
        html += '</table>';
        Espruino.Core.App.openPopup({
          position: "relative",
          title: "Testing Properties" + ((polling) ? " (view only)" : ""),
          id: "testingPropertiesList",contents: html
        });
        setTimeout(function(){
          $("#testDescription").val(testDescription);
          $("#imageUrlList").val((imageUrl == "") ? "- none -" : imageUrl);
          $("#testingFrequency").val(frequency);
          $("#testPollActive")[0].checked = activePoll;
          $("#projectUrlList").val((testProject == "") ? "- none -" : testProject + ".js");
          $("#testDebug")[0].checked = testDebug;
          if (!polling) { $("#hideAndStoreTestingPropertiesBtn").unbind().click(hideAndStoreTestingProperties); }
        },100);
      }); // /loadDirHTML callback for .js for project
    }); // /loadDirHTML callback for .jpg for image
  }

  function hideAndStoreTestingProperties(){
    var val;
    testDescription = $("#testDescription").val();
    imageUrl = ((val = $("#imageUrlList").val()) == '- none -') ? "" : val;
    frequency = $("#testingFrequency").val();
    activePoll = $("#testPollActive")[0].checked;
    testProject = ((val = $("#projectUrlList").val()) == '- none -') ? "" : val.split(".")[0];
    testDebug = $("#testDebug")[0].checked;
    Espruino.Core.App.closePopup();
  }

  function switchLogging(){
    if(polling){notification("W","nsl");this.checked = testLogging;}
    else{testLogging = this.checked;}
  }

  function openTestingLog(){
    var url = "data/app/openTestingLog.html?entry=" + Espruino.Config.projectEntry.split(":")[0];
    url += "&directory=" + Espruino.Config.projectEntry.split(":")[1];
    chrome.app.window.create(url, {innerBounds: {width: 620,height: 430}});
  }

  function showActionPoints(){
    var i,html = "";
    html += '<table boder="1" id="actionTable">';
    for(i = 0; i < actionpoints.length; i++){
      html += actionpoints[i].getHtmlEdit(i);
    }
    html += '</table>';
    $("#testingAction").html(html);
    $(".alterActionPoint").click(copyAP2input);
    $(".dropActionPoint").button({ text:false, icons:{ primary: "ui-icon-minus"}}).unbind().click(dropActionPoint);
    $(".executeActionPoint").button({ text:false, icons: { primary: "ui-icon-play"} }).unbind().click(runActionPoint);
    $("#testingSetClear").button({ text:false, icons:{primary:"ui-icon-minusthick"}}).unbind().click(dropAllAction);
    $("#testingAddAction").button({ text:false, icons: { primary: "ui-icon-circle-plus"} }).unbind().click(addActionPoint);
  }

  function dropAllAction(){
    if(!polling){
      actionpoints = [];
      $("#testingAction").html("");
    }
    else {notification("W","nrm");}
  }

  function dropActionPoint(){
    if(!polling){
      actionpoints.splice($(this).attr("i"),1);
      showActionPoints();
    }
    else {notification("E","nrm");}
  }

  function runActionPoint(){
    // if (polling) { #jj? why restrict - #muet?
      actionpoints[$(this).attr("i")].assign();
    // } else {
    //  notification("W","orm");
    // }
  }

  function addActionPoint(){
    var i,label = replaceNonAlphaNumeric($("#actionName").val());
    if(!polling){
      i = actionPointExists(label);
      if(i){ notification("I","apc");actionpoints[i].update($("#actionExpression").val(),$("#actionType").val());}
      else{ actionpoints.push(new Actionpoint({label:label,expression:$("#actionExpression").val(),type:$("#actionType").val()}));}

      showActionPoints();
    }
    else {notification("W","nrm");}
  }

  function actionPointExists(label){
    var i;
    for(i = 0; i < actionpoints.length; i++){
      if(actionpoints[i].label === label) return i;
    }
    return false;
  }

  function copyAP2input(){
    var t = $(this)[0];
    $("#actionName").val(t.innerText);
    $("#actionExpression").val(t.title.split("\n")[0]);
    $("#actionType").val(t.title.split("\n")[1]);
  }

  function showDataPoints(){
    var i,html = "",ds;
    html += '<table border="1" id="detailsTable">';
    if(datapoints.length === 0){
      datapoints.push(new Datapoint({label:"Time",expression:"getTime()",type:"number"}));
      datapoints.push(new Datapoint({label:"FreeMemory",expression:"process.memory().free",type:"number"}));
    }
    for(i = 0;i < datapoints.length; i++){html += datapoints[i].getHtmlEdit(i);}
    html += '</table>';
    $("#testingTable").html(html);
    $(".alterDataPoint").click(copyDP2input);
    $(".dropDataPoint").button({ text:false, icons:{primary: "ui-icon-minus"}}).unbind().click(dropDataPoint);
    $("#testingExpressionClear").button({ text:false, icons:{primary:"ui-icon-minusthick"}}).unbind().click(dropAllDataPoints);
    $("#testingExpressionReset").button({ text:false, icons:{primary:"ui-icon-seek-first"}}).unbind().click(resetAllDataPoints);
    $("#testingAdd").button({ text:false, icons: { primary: "ui-icon-circle-plus"} }).unbind().click(addDataPoint);
  }

  function dropDataPoint(){
    if(!polling){
      datapoints.splice($(this).attr("i"),1);
      showDataPoints();
    }
    else{notification("W","nrm")}
  }

  function dropAllDataPoints(){
    if(!polling){
      datapoints = [];
      showDataPoints();
    }
    else{notification("W","nrm")}
  }

  function resetAllDataPoints(){
    if(!polling){
      for(var i = 0; i < datapoints.length; i++){
        datapoints[i].reset();
      }
      showFlotCharts();
    }
    else{notification("W","nrm")}
  }

  function addDataPoint(){
    var i,label = replaceNonAlphaNumeric($("#testingLabel").val());
    if(!polling){
      i = dataPointExists(label);
      if(i){ notification("I","dpc");datapoints[i].update($("#testingExpression").val(),$("#testingType").val()); }
      else { datapoints.push(new Datapoint({label:label,expression:$("#testingExpression").val(),type:$("#testingType").val()}));}
      showDataPoints();
    }
    else{notification("W","nrm")}
  }

  function dataPointExists(label){
    var i;
    for(i = 0; i < datapoints.length; i++){
      if(datapoints[i].label === label) return i;
    }
    return false;
  }

  function copyDP2input(){
    var t = $(this)[0];
    $("#testingLabel").val(t.innerText);
    $("#testingExpression").val(t.title.split("\n")[0]);
    $("#testingType").val(t.title.split("\n")[1]);
  }

  function showDataImage(url){
    var el,t,h,w;
    t = $("#testingForm");
    t.html("");
    $.get("data/testing_image.html",function(data){
      t.html(data);
      setTimeout(function(){
        h = t[0].clientHeight;w = t[0].clientWidth;
        $("#divImage").css({"height":h + "px","width":w + "px"});
        Espruino.Plugins.Project.loadDataUrl("testing/" + url,showImage);
      },50);
    },"html");
    function showImage(dataUrl){
      var c,img;
      img = $("#testingImage")[0];
      img.src = dataUrl;
      overlay = new imageOverlay('#overlayCanvas');
      overlay.clear();
      overlay.bind();
    }
  }

  function showDataChart(){
    $.get("data/testing_form.html",function(data){
      $("#testingForm").html(data);
      showDataPoints();
      showActionPoints();
      showFlotCharts();
      $("#testMode").unbind().change(function(){
        switch($("#testMode").val()){
          case "Image":
            if(imageUrl !== "" && imageUrl !== null){testMode = "Image";showTesting();}
            else{
              notification("W","nid");
              $("#testMode").val(testMode);
            }
            break;
          case "Form":
            testMode = "Form";
            showTesting();
            break;
        }
      });
    },"html");
  }

  function assignImageXYtoTestingItem(x,y){
    var i,html = "";
    html = "Please assign click to datapoint or action";
    html += '<table width="100%" border="1"><tr><th colspan="3" align="center">Datapoints</th></tr>';
    for(i = 0; i < datapoints.length;i++){ html += datapoints[i].getSetxyHtml(i); }
    html += '<tr><th colspan="3" align="center">Actions</th></tr>';
    for(i = 0; i < actionpoints.length;i++){ html += actionpoints[i].getSetxyHtml(i); }
    html += '</table>';
    Espruino.Core.App.openPopup({
      position: "relative",title: "Assign to Item",id: "pointList",contents: html
    });
    setTimeout(function(){
      var i;
      for(i = 0; i < datapoints.length;i++){
        if(datapoints[i].display){$("#DPid_" + i).val(datapoints[i].display);}
        else{$("#DPid_" + i).val("none");}
      }
      $(".dp_class").unbind().click(function(){
        i = parseInt($(this).attr("pnt"));
        datapoints[i]["x"] = x;
        datapoints[i]["y"] = y;
        datapoints[i]["display"] = $("#DPid_" + i).val();
        Espruino.Core.App.closePopup();
      });
      $(".ap_class").unbind().click(function(){
        i = parseInt($(this).attr("pnt"));
        actionpoints[i]["x"] = x;
        actionpoints[i]["y"] = y;
        Espruino.Core.App.closePopup();
      });
    },50);
  }

  function imageAction(x,y){
    var d,i,a;
    for(i = 0; i < actionpoints.length;i++){
      a = actionpoints[i];
      if(a.x !== 0){
        d = Math.sqrt((a.x-x)*(a.x-x) + (a.y-y)*(a.y-y));
        if(d<20){
          a.assign();
        }
      }
    }
  }

  function runGetExpression(){
    var s,d = new Date();
    if(Espruino.Core.Serial.isConnected()){
      $("#testingExpressionStop").button( "option", "disabled", false);
      $("#testingExpressionRun").button( "option", "disabled", true);
      Espruino.Core.Serial.write("echo(0);\n");
      if(activePoll){ pollData(); }
      polling = true;
      if(testLogging === true){
        testLoggingName = "testinglog/" + testingFile.split(".")[0] + "_" + d.getFullYear() + "_" + d.getMonth() + "_" + d.getDate();
        testLoggingName += "_" + d.getHours() + "_" + d.getMinutes() + "_" + d.getSeconds() + ".json";
        s = '[{"UTC":' + d.getTime() + ',"testing":"' + testingFile.split(".")[0] + '","dataPoints":[';
        for(var i = 0; i < datapoints.length; i++){
          if(i > 0) s += ',';
          s += '{"label":"' + datapoints[i].label + '","type":"' + datapoints[i].type + '"}';
        }
        s += ']}\n]';
        Espruino.Plugins.Project.appendFile(testLoggingName,s);
      }
    }
    else{notification("E","nc");}
  }

  function stopGetExpression(){
    if(activePoll){ clearInterval(pollPnt)};
    Espruino.Core.Serial.write("echo(1);\n");
    $("#testingExpressionStop").button( "option", "disabled", true);
    $("#testingExpressionRun").button( "option", "disabled", false);
    polling = false;
    Espruino.Core.Serial.write("echo(1);\n");
  }

  function showFlotCharts(){
    var d,dp,lastData;
    flotData = [];
    for(var i = 0; i < datapoints.length;i++){
      d = {label:datapoints[i].label,data:[]};
      switch(datapoints[i].type){
        case "number":
          for(var j = 0; j < datapoints[i].points.length; j++){
            d.data.push(datapoints[i].points[j]);
          }
          $.extend(true,d,flotDatasetOptions);
          break;
        case "string":
          lastData = "";
          for(var j = 0; j < datapoints[i].points.length; j++){
            dp = datapoints[i].points[j];
            if(dp[1] && (dp[1] != lastData)){
              d.data.push([dp[0],1,dp[1]]);
              lastData = dp[1];
            }
          }
          $.extend(true,d,flotDatasetOptionsText);
          break;
      }
      flotData.push(d);
    }
    setTimeout(function(){
      if($("#flotplaceholder")[0]){
        flotChart = $.plot($("#flotplaceholder"),flotData,flotOptions);
        $("#flotplaceholder").unbind().on("plothover",function(event,pos,item){
          if(item){
            $("#flottooltip").html(item.series.data[item.dataIndex][2])
            .css({top: item.pageY+5, left: item.pageX+5})
            .fadeIn(200);
          } else {$("#flottooltip").hide();}
        });
      }
    },100);
  }

  function setTestingValues(data){
    var i,j,dt,utc;
    utc = new Date().getTime();
    dt = JSON.parse(data);
    if(testLogging === true){
      Espruino.Plugins.Project.appendFile(testLoggingName,',{"UTC":' + utc + ',"data":' + data + "}\n]");
    }
    if(typeof dt === "object"){
      for(i in dt){
        for(j = 0; j < datapoints.length;j++){
          if(i === datapoints[j].label){
            datapoints[j].addValue([utc,dt[i]]);
          }
        }
      }
    }
    switch(testMode){
      case "Form":showFlotCharts();break;
      case "Image":overlay.drawPoints(dt);break;
    }
  }

  function pollData(){
    var cmd;
    cmd = "function " + intervalName + "(){"
    cmd += "var d={";
    for(var i = 0; i < datapoints.length; i++){
      if(i>0){ cmd += ","; }
      cmd += '"' + datapoints[i].label + '":' + datapoints[i].expression;
    }
    cmd += "};\n";
    cmd += "console.log(\"<<<<<\" + JSON.stringify(d) + \">>>>>\");\n";
    cmd += "}\n";
    Espruino.Core.Serial.write(cmd);
    if(pollPnt){clearInterval(pollPnt);}
    pollPnt = setInterval(function(){
      cmd = intervalName + "();\n";
      Espruino.Core.Serial.write(cmd);
    },frequency * 1000);
  }

  function showIcon(newValue){
    if(newValue){
      icon = Espruino.Core.App.addIcon({
        id:'terminalTesting',
        icon: 'code',
        title: 'Switch to testing page',
        order: 600,
        area: {
          name: "terminal",
          position: "bottom"
        },
        click: openTestingWindow
      });
    }
    else{
      if (icon!==undefined) icon.remove();
    }
  }

  function openTestingWindow(){
    if (isInTesting())
      switchToCode();
    else 
      switchToTesting();
  }

  function switchToTesting() {
    $("#terminal").hide();
    $("#divTesting").show();
    icon.setIcon("eye");
  }

  function switchToCode() {
    $("#divTesting").hide();
    $("#terminal").show();
    icon.setIcon("code");
  }

  function isInTesting() {
    return $("#divTesting").is(":visible");
  }

  Espruino.Plugins.Testing = {
    init : init
  };

}());
/* --------------------------------------------------------------
         js/plugins/notification_sound.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Juergen Marsch (juergenmarsch@googlemail.com)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 ------------------------------------------------------------------
  Testing Plugin
 ------------------------------------------------------------------
**/
"use strict";
(function(){
  var audioPlayer;
  function init() {
    audioPlayer = new Audio("");
    document.body.appendChild(audioPlayer);
    audioPlayer.addEventListener('canplay', function() { audioPlayer.play(); }, false);
    Espruino.Core.Config.addSection("Sound", {
      sortOrder:600, description: "Play notification sounds or speak for certain events"
    });
    
    var soundTypes = {
        "":"None",
        "doorbell2":"Doorbell",
        "trolley2":"Trolley",
        "sirens_x":"Siren",
        "truck_horn":"Truck horn",
        "car_horn_x":"Car horn",
        "warning_horn":"Warning horn",
        "boxing_bell":"Boxing Bell",
        "phone_ring_old":"Phone ring"
    };
    Espruino.Core.Config.add("Sound_Success",{
      section : "Sound",name: "Sound for Success",description: "Defines sound for Success",
      type : soundTypes, defaultValue : ""
    });
    Espruino.Core.Config.add("Sound_Warning",{
      section : "Sound",name: "Sound for Warnings",description: "Defines sound for Warnings",
      type : soundTypes, defaultValue : ""
    });
    Espruino.Core.Config.add("Sound_Error",{
      section : "Sound",name: "Sound for Errors",description: "Defines sound for Errors",
      type : soundTypes, defaultValue : ""
    });
    Espruino.Core.Config.add("Sound_Info",{
      section : "Sound",name: "Sound for Info",description: "Defines sound for Infos",
      type : soundTypes, defaultValue : ""
    });
    Espruino.Core.Config.add("Speak_Success",{
      section : "Sound",name:"Speak sucess",description: "Speak message for success",
      type: "boolean",defaultValue: false
    }); 
    Espruino.Core.Config.add("Speak_Warning",{
      section : "Sound",name: "Speak warning",description: "Speak message for warning",
      type: "boolean",defaultValue: false
    }); 
    Espruino.Core.Config.add("Speak_Error",{
      section : "Sound",name: "Speak error",description: "Speak message for sound",
      type: "boolean",defaultValue: false
    }); 
    Espruino.Core.Config.add("Speak_Info",{
      section : "Sound",name: "Speak info",description: "Speak message for info",
      type: "boolean",defaultValue: false
    }); 
    Espruino.addProcessor("notification", function (data, callback) {
      var snd;
      switch(data.type){
        case "success": snd = Espruino.Config.Sound_Success; break;
        case "error": snd = Espruino.Config.Sound_Error; break;
        case "warning": snd = Espruino.Config.Sound_Warning; break;
        case "info": snd = Espruino.Config.Sound_Info; break;
      }
      if(snd && snd !== ""){ sendSound(snd);}
      
      switch(data.type){
        case "success": if(Espruino.Config.Speak_Success){ speak(data.msg); } break;
        case "error": if(Espruino.Config.Speak_Error){ speak(data.msg); } break;
        case "warning": if(Espruino.Config.Speak_Warning){ speak(data.msg); } break;
        case "info": if(Espruino.Config.Speak_Info){ speak(data.msg); } break;
      }
      callback(data);
    });

  }
  function sendSound(sound){
    var snd = "";
    snd = "data/sounds/" + sound + ".wav";
    audioPlayer.src = snd;
  }
  function speak(text){
    if(Espruino.Core.Utils.getChromeVersion() >= 33){
      var msg = new SpeechSynthesisUtterance(text);
      window.speechSynthesis.speak(msg);
    }
  }   
    
  Espruino.Plugins.Notification_Sound = {
    init : init,
    sendSound : sendSound,
    speak : speak
  };
})();
/* --------------------------------------------------------------
         js/plugins/tern.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Awesome Tern Autocomplete code
 ------------------------------------------------------------------
**/
(function(){

  var server;
  var espruinoJSON;

  function init() {
    function getURL(url, c) {
      var xhr = new XMLHttpRequest();
      xhr.open("get", url, true);
      xhr.send();
      xhr.onreadystatechange = function() {
        if (xhr.readyState != 4) return;
        if (xhr.status < 400) return c(null, xhr.responseText);
        var e = new Error(xhr.responseText || "No response");
        e.status = xhr.status;
        c(e);
      };
    }

    getURL(/*"http://ternjs.net/defs/ecma5.json"*/"data/espruino.json", function(err, code) {
      if (err) throw new Error("Request for ecma5.json failed: " + err);
      espruinoJSON = code;
      server = new CodeMirror.TernServer({defs: [JSON.parse(espruinoJSON)]});

      Espruino.Core.EditorJavaScript.getEditors().forEach(applyToEditor);
    });

    /* Ideally espruino.json has:

      "require": {
         "!type": "fn(moduleName: ?) -> !custom:require_handler",

      .. and then this handler gets called and sets the correct return type
      when someone uses `require()`.

      The type is in espruino.json at the root level at the moment, so
      require("http") => "http" object. But what I'm doing below isn't working :(
     */
    /*var infer = tern;
    infer.registerFunction("require_handler", function(self, args, argNodes) {
      if (argNodes.length!=1 || argNodes[0].type!="Literal") return;
      var moduleName = argNodes[0].value;
      var moduleType = new infer.Obj(null, moduleName); // broken
      self.propagate(moduleType);
      return infer.ANull;
    });*/

    /* When we connect to a board and we load its description,
     go through an add all the pins as variables so Tern cal autocomplete */
    Espruino.addProcessor("boardJSONLoaded", function (data, callback) {
      if (espruinoJSON !== undefined) {
        var defs;
        try {
          defs = JSON.parse(espruinoJSON);
        } catch (e) {
          console.log("ERROR: boardJSONLoaded, ", e.toString());
          callback(data);
          return;
        }
        if ("pins" in data) {
          data.pins.forEach(function(pin) {
            var functions = [];
            for (var fn in pin.simplefunctions) {
              if (["PWM","USART","SPI","I2C","DEVICE"].indexOf(fn)>=0)
                functions = functions.concat(pin.simplefunctions[fn]);
              else
                functions.push(fn);
            }
            defs[pin["name"]] = {
              "!type": "+Pin",
              "!doc": functions.join(", "),
              "!url": "http://www.espruino.com/Reference"+data["BOARD"]+"#"+pin["name"],
            };
          });
        }
        if ("devices" in data) {
          var devices = ["LED1","LED2","LED3","LED4","LED5","LED6","LED7","LED8","BTN","BTN1","BTN2","BTN3","BTN4"];
          devices.forEach(function(device) {
            if (device in data.devices) {
              defs[device] = {
                  "!type": "+Pin",
                  "!doc": "A Pin"
                };
            }
          });
          if ("LCD" in data.devices)
            defs["g"] = {
                "!type": "+Graphics",
                "!doc": "Graphics instance for on-device LCD",
                "!url": "https://www.espruino.com/Reference#Graphics"
              };
        }

        // reload tern server with new defs
        server = new CodeMirror.TernServer({defs: [defs]});
      }

      callback(data);
    });
  }

  function applyToEditor(editor) {
    if (!server) return; // not loaded yet

    function hintHandler(cm, c) {
      /* Bodges Tern's handler so it can display HTML */
      return server.getHint(cm,function(data) {
        if (data.list)
          for (var i=0;i<data.list.length;i++) {
            var l = data.list[i];
            if (!l.data || !l.data.doc) continue;
            var div = document.createElement('div');
            div.innerHTML = l.data.doc;
            l.data.doc = div;
          }
        c(data);
      });
    }
    hintHandler.async = true;

    var k = editor.codeMirror.getOption("extraKeys");
    var nk = {
      "Ctrl-Space": function(cm) { editor.codeMirror.showHint({hint: hintHandler}); }, // server.complete(cm);
      "Ctrl-I": function(cm) { server.showType(cm); },
      "Alt-.": function(cm) { server.jumpToDef(cm); },
      "Alt-,": function(cm) { server.jumpBack(cm); },
      "Ctrl-Q": function(cm) { server.rename(cm); },
      "Ctrl-.": function(cm) { server.selectName(cm); }
    };
    for (var i in nk)
      k[i] = nk[i];
    editor.codeMirror.setOption("extraKeys", k);
    editor.codeMirror.on("cursorActivity", function(cm) { server.updateArgHints(cm); });
  }

  Espruino.Plugins.Tern = {
    init : init,
    applyToEditor : applyToEditor
  };
}());
/* --------------------------------------------------------------
         js/plugins/debugger.js
   -------------------------------------------------------------- */
/**
 Copyright 2015 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Graphical debugger that hooks into Espruino's internal debugger
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var CSS_BG_CLASS = "cm-DebugLineBg";

  var inDebugMode = false;
  var currentDebugLine = undefined;
  var callbackOnEqualsLine = undefined; // fn to call when we get `=xxx` - used for variable tooltips
  var equalsLineContents = ""; // for multiple line '=' data, this is what we have so far
  var knownValues = {};
  var icons = {};

  function init() {

    Espruino.addProcessor("terminalPrompt", onTerminalPrompt);
    Espruino.addProcessor("terminalNewLine", onTerminalNewLine);
    Espruino.addProcessor("editorHover", onEditorHover);
  }

  function debugCmd(cmd) {
    Espruino.Core.Serial.write(cmd+"\n");
  }

  function addIcons() {
    icons.go = Espruino.Core.App.addIcon({
      id: "debug-go",
      icon: "debug-go",
      title : "Continue Running",
      order: 2000,
      area: {
        name: "code",
        position: "top"
      },
      click: function() { debugCmd("continue"); }
    });
    icons.stop = Espruino.Core.App.addIcon({
      id: "debug-stop",
      icon: "debug-stop",
      title : "Stop Debugging",
      order: 2001,
      area: {
        name: "code",
        position: "top"
      },
      click: function() { debugCmd("quit"); }
    });
    icons.into = Espruino.Core.App.addIcon({
      id: "debug-into",
      icon: "debug-into",
      title : "Step Into Statement",
      order: 2002,
      area: {
        name: "code",
        position: "top"
      },
      click: function() { debugCmd("step"); }
    });
    icons.over = Espruino.Core.App.addIcon({
      id: "debug-over",
      icon: "debug-over",
      title : "Step Over (Next Statement)",
      order: 2003,
      area: {
        name: "code",
        position: "top"
      },
      click: function() { debugCmd("next"); }
    });
    icons.out = Espruino.Core.App.addIcon({
      id: "debug-out",
      icon: "debug-out",
      title : "Step Out (finish)",
      order: 2004,
      area: {
        name: "code",
        position: "top"
      },
      click: function() { debugCmd("finish"); }
    });
  }

  function removeIcons() {
    for (var i in icons) {
      if (icons[i]!==undefined) {
        icons[i].remove();
        icons[i] = undefined;
      }
    }
  }

  function setDebugMode(isDbg) {
    if (inDebugMode != isDbg) {
      inDebugMode = isDbg;
      knownValues = {};
      if (inDebugMode) {
        addIcons();
      } else {
        removeIcons();
        setDebugLine(undefined); // remove any marked lines
      }
      Espruino.callProcessor("debugMode", inDebugMode);
    }
  }

  function setDebugLine(line) {
    var cm = Espruino.Core.EditorJavaScript.getCodeMirror();
    if (!cm) return;
    if (currentDebugLine!==undefined) {
      knownValues = {};
      cm.removeLineClass(currentDebugLine, "background", CSS_BG_CLASS);
    }
    if (line!==undefined) {
      cm.addLineClass(line, "background", CSS_BG_CLASS);
      cm.scrollIntoView(line);
    }
    currentDebugLine = line;
  }

  function onEditorHover(info, callback) {
    function setTooltip(value) {
      knownValues[name] = value;
      var tip = document.createElement("div");
      tip.className = "CodeMirror-debug-tooltip";
      tip.appendChild(document.createTextNode(name + " = " + value));
      info.showTooltip(tip);
    };

    if (inDebugMode && // in debug mode
        !callbackOnEqualsLine && // we're not trying to do something already
        Espruino.Core.Terminal.getTerminalLine()=="debug>" // user is not currently typing on LHS
        ) {
      var name;
      if (info.node.className=="cm-variable" ||
          info.node.className=="cm-variable-2" ||
          info.node.className=="cm-def") {
        name = info.node.textContent;
      }
      if (info.node.className=="cm-property") {
        // get 'a.b' type stuff. There must be a better way :)
        if (info.node.previousSibling &&
            info.node.previousSibling.textContent=="." &&
            info.node.previousSibling.previousSibling &&
            info.node.previousSibling.previousSibling.className == "cm-variable") {
          name = info.node.previousSibling.previousSibling.textContent + "." + info.node.textContent;
        }
      }
      if (name) {
        if (name in knownValues) {
          setTooltip(knownValues[name]);
        } else {
          equalsLineContents = undefined;
          callbackOnEqualsLine = setTooltip;
          debugCmd("p "+name);
        }
      }
    }
    callback(info);
  }

  function onTerminalPrompt(prompt, callback) {
    if (prompt == "debug>") {
      setDebugMode(true);
      var lastLine = Espruino.Core.Terminal.getTerminalLine(1);
      if (lastLine && lastLine.indexOf("^")>0) {
        var codeLine = Espruino.Core.Terminal.getTerminalLine(2);
        if (codeLine) {
          var fileLineCol = codeLine.match(/([^:]*):(\d*):(\d*) /);
          if (fileLineCol!==null) {
            // 1=file, 2=line, 3=col
            setDebugLine(fileLineCol[2]-1);
          } else { // old style - just a line number
            var lineNumber = parseInt(codeLine.substr(0,8).trim());
            if (lineNumber) setDebugLine(lineNumber-1);
          }
          // TODO: could check if the part of the line shown matches the editor - maybe could add some jitter to it? Maybe even check against pretokenised source that might have been sent over?
        }
      }
    } else {
      setDebugMode(false);
    }

    callback(prompt);
  }

  function onTerminalNewLine(lastLine, callback) {
    if (inDebugMode) {
      if (callbackOnEqualsLine) {
        /** We might want to get the value of some expression in the debugger,
         * so we write `p myExpr\n` to Espruino, and wait for a result, which
         * should be `=foo`. Of course it might be multi-line */
        if (lastLine) {
          if (lastLine[0]=="=" && callbackOnEqualsLine) {
            equalsLineContents=lastLine.substr(1);
            if (Espruino.Core.Utils.countBrackets(equalsLineContents)<=0) {
              callbackOnEqualsLine(equalsLineContents);
              equalsLineContents = undefined;
              callbackOnEqualsLine = undefined;
            }
          } else if (equalsLineContents!==undefined && callbackOnEqualsLine) {
            equalsLineContents += lastLine;
            if (Espruino.Core.Utils.countBrackets(equalsLineContents)<=0) {
              callbackOnEqualsLine(equalsLineContents);
              equalsLineContents = undefined;
              callbackOnEqualsLine = undefined;
            }
          } else if (lastLine.substr(0,6)!="debug>") {
            // we had some error and couldn't dump the value
            equalsLineContents = undefined;
            callbackOnEqualsLine = undefined;
          }
        }
      } else {
        // we're not sure what's going on (an unexpected print, or an exception)
        // but let's keep the highlighted line anyway
        // setDebugLine(undefined); // remove highlighted line
      }
    }
    callback(lastLine);
  }

  Espruino.Plugins.Debugger = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         js/plugins/tour.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Guided tour
 ------------------------------------------------------------------
**/
"use strict";
(function(){
  // Reset guiders defaults
  $.guiders._buttonAttributes = { "href": "#" };
  $.guiders._arrowSize = 10;

  // Temp var to hold the blockly state so we can revert back
  var isInBlockly;

  // Define slides
  var slides = [
    {
      title: "Web IDE tour",
      description: "Click here for a quick tour of the new Web IDE",
      attachTo: "#icon-help",
      position: "bottomRight",
      buttons: []
    },
    // now we start the real tour
    {
      title: "Welcome to the Espruino Web IDE",
      description: "The Espruino Web IDE is designed for writing code on microcontrollers that use the <a href='http://www.espruino.com' target='_blank'>Espruino JavaScript interpreter</a><br /><br />"+
                   "To help you get up to speed quickly with the IDE, this tour will run you through some of the core features you'll need to know to get started. <br /><br />So when you are ready, click next to continue."
    },
    {
      title: "Connect to your Espruino",
      description: "The first thing you'll want to do is connect to your Espruino board by clicking the 'Connect' button.",
      attachTo: "#icon-connection",
      position: "bottomLeft"
    },
    {
      title: "Select your port",
      description: "Connect your Espruino to an available port and select the port from the list.",
      attachTo: ".window--modal",
      position: "bottom",
      onShow: function(){
        Espruino.Core.MenuPortSelector.showPortSelector();
      },
      onHide: function(){
        Espruino.Core.App.closePopup();
      }
    },
    {
      title: "Connected",
      description: "The 'Connect' button should then turn green and you are ready to go.",
      attachTo: "#icon-connection",
      position: "bottomLeft"
    },
    {
      title: "The terminal",
      description: "To send simple commands to the Espruino, simply type them in the terminal window and hit enter to send.",
      attachTo: "#terminal",
      position: "bottom",
      offset: {
        top: -300,
        left: null
      }
    },
    {
      title: "The code editor",
      description: "To send more complex blocks of javascript, write them in the code editor window...",
      attachTo: ".editor.editor--code",
      position: "left",
      offset: {
        top: -300,
        left: null
      },
      onShow: function(){
        isInBlockly = Espruino.Core.File.isInBlockly();
        if(isInBlockly)
          Espruino.Core.File.switchToCode();
      },
      onHide: function(){
        if(isInBlockly)
          Espruino.Core.File.switchToBlockly();
      }
    },
    {
      title: "The block editor",
      description: "...or switch to the block editor and use 'Scratch' like code blocks...",
      attachTo: ".file_list-new",
      position: "bottom",
      onShow: function(){
        isInBlockly = Espruino.Core.File.isInBlockly();
        if(!isInBlockly)
          Espruino.Core.File.switchToBlockly();
      },
      onHide: function(){
        if(!isInBlockly)
          Espruino.Core.File.switchToCode();
      }
    },
    {
      title: "Deploying your code",
      description: "...then when your are ready, upload it to your Espruino by clicking the 'Deploy' button.",
      attachTo: "#icon-deploy",
      position: "left"
    },
    {
      title: "Go wild!",
      description: "And those are the basics of the Espruino Web IDE.<br /><br />For more helpful guides and tutorials, be sure to check out the <a href='http://www.espruino.com/Tutorials' target='_blank'>Tutorials</a> section on the Espruino website, or if you have any questions, why not head on over to the <a href='http://forum.espruino.com/' target='_blank'>Forums</a>.<br /><br />We hope you enjoy your Espruino!"
    }
  ];

  function init() {

    // When finding an icon, you need to make sure your plugin
    // comes after the inital icon module.
    var icon = Espruino.Core.App.findIcon("help");
    if(icon) {
      icon.addMenuItem({
        id: "tour",
        icon: "compass",
        title: "Tour",
        order: 2,
        click: function(){
          startTour();
        }
      });
    }
    prepareSlides("g", slides);

    // Make sure clicking overlay hides the tour
    $("body").on("click", "#guiders_overlay", function(){
      guiders.hideAll();
    });

    // Start the tour
    function startTour()
    {
      // Check arrow offset
      $.guiders._arrowOffset = $("body").hasClass("compact") ? 5 : 20;

      // Start the tour
      guiders.show("g1");
    }


    // If this is our first run, prompt about the Tour
    Espruino.addProcessor("initialised", function(data, callback) {
      if (!Espruino.Config.NOT_FIRST_RUN) {
        Espruino.Config.set("NOT_FIRST_RUN", true);
        guiders.show("g0");
      }

      callback(data);
    });
  }
  function prepareSlides(slideId,slides){
    $.each(slides, function(idx, itm){
      switch(itm.onHide){
        case "clickAttached":
          itm.onHide = function(){$(itm.attachTo).click();};
          break;
        case "clickElement":
          itm.onHide = function(){$(itm.element).click();};
          break;
        case "closePopup":
          itm.onHide = function(){Espruino.Core.App.closePopup();};
          break;
        case "sendBoard":
          itm.onHide = function(){Espruino.Core.Serial.write(itm.source);};
          break;
        case "sendEditor":
          itm.onHide = function(){Espruino.Core.File.setJSCode(itm.source, {fileName:"tour.js"});};
          break;
        case "sendAttached":
          itm.onHide = function(){
            switch(getInputType($(itm.attachTo))){
              case "text":
                $(itm.attachTo).val(itm.source);
                break;
              case "checkbox":
                if($(itm.attachTo).prop("checked") != itm.source){
                  $(itm.attachTo).click();
                }
                break;
              case "select":
                $(itm.attachTo).val(itm.source);
                break;
              default:
                break;
            }
          }
          break;
      }
      var opts = $.extend({}, {
        id: slideId + idx,
        overlay: true,
        isHashable: false
      }, itm);
      if(idx < slides.length - 1){
        opts.next = slideId + (idx + 1);
        if(opts.buttons == undefined){
          opts.buttons = [{ name: "Next" }];
        }
      }
      if(!guiders.get(opts.id)) { guiders.createGuider(opts); }
    });
  }
  function runTour(tourUrl){
    $.getJSON(tourUrl,function(tour){
      if (tour.needsConnection && !Espruino.Core.Serial.isConnected()) {
        var popup = Espruino.Core.App.openPopup({
          title: "Tour can't run",
          padding: true,
          contents: '<p>This tour needs a connection to an Espruino board</p>'+
                    '<p>Please connect your board and then click the \'Connect\' icon in the top right</p>' ,
          position: "center",
          buttons : [{ name:"Ok", callback : function() { Espruino.Core.App.closePopup(); }}]
        });
      } else if (tour.needsProjectSetting && !Espruino.Config.projectEntry) {
        var popup = Espruino.Core.App.openPopup({
          title: "Tour can't run",
          padding: true,
          contents: '<p>This tour needs a Project directory to be defined.</p>'+
                    '<p>Please go to <b>Settings</b>, then <b>Project</b>, and follow the <b>Project Tour</b>.</p>' ,
          position: "center",
          buttons : [{ name:"Ok", callback : function() { Espruino.Core.App.closePopup(); }}]
        });
      } else if (tour.needsTestingSetting && !Espruino.Config.ENABLE_Testing) {
        var popup = Espruino.Core.App.openPopup({
          title: "Tour can't run",
          padding: true,
          contents: '<p>This tour needs Testing to be enabled.</p>'+
                    '<p>Please go to <b>Settings</b>, then <b>Testing</b>, and follow the <b>Testing Tour</b>.</p>' ,
          position: "center",
          buttons : [{ name:"Ok", callback : function() { Espruino.Core.App.closePopup(); }}]
        });
      } else {
        prepareSlides(tour.id, tour.slides);
        guiders.show(tour.id + "1");
      }
    });
  }
  function addTourButton(tourUrl){
    var icon = Espruino.Core.App.findIcon("help");
    if(icon) {
      $.getJSON(tourUrl,function(slide){
        icon.addMenuItem({
          id: slide.buttonid,
          icon: "compass",
          title: slide.title,
          order: 3,
          click: function(){
            runTour(tourUrl);
          }
        });
      });
    }
  }
  function getInputType(x) {
    return x[0].tagName.toString().toLowerCase() === "input" ?
      $(x).prop("type").toLowerCase() : x[0].tagName.toLowerCase();
  };
  Espruino.Plugins.Tour = {
    init : init,
    runTour : runTour,
    addTourButton : addTourButton
  };
}());
/* --------------------------------------------------------------
         js/plugins/settingsProfile.js
   -------------------------------------------------------------- */
/**
 Copyright 2016 Gordon Williams (gw@pur3.co.uk),
                Victor Nakoryakov (victor@amperka.ru)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Settings profile (mass options update) plugin
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
  }

  function updateFromJson(obj) {
    if (typeof obj === 'string') {
      obj = JSON.parse(obj);
    }

    confirmApply(obj, function() {
      Object.keys(obj).forEach(function(key) {
        Espruino.Config.set(key, obj[key]);
      });
    });
  }

  function confirmApply(obj, confirmCallback) {
    var $content = $('<div></div>');
    var $wrapper = $('<div class="settingsProfile__popup"></div>').appendTo($content);
    $wrapper.append('Following settings are about to be applied:');

    var $table = $([
      '<table>',
        '<thead>',
          '<tr>',
            '<th>Key</th>',
            '<th>Value</th>',
          '</tr>',
        '</thead>',
        '<tbody>',
        '</tbody>',
      '</table>'
    ].join('')).appendTo($wrapper);

    var $tbody = $('tbody', $table);

    var isAltered = false;
    Object.keys(obj).forEach(function(key) {
      if (Espruino.Config[key]!=obj[key])
        isAltered = true;
      $([
        '<tr>',
          '<td>', key, '</td>',
          '<td>', obj[key], '</td>',
        '</tr>'
      ].join('')).appendTo($tbody);
    });

    // Nothing has changed - don't bother prompting the user.
    if (!isAltered) return;

    var popup = Espruino.Core.App.openPopup({
      title: "Confirm setting update...",
      contents: $content.html(),
      position: "center",
      buttons : [{ name:"Ok", callback : function() {
        popup.close();
        confirmCallback();
      }}]
    });
  }

  Espruino.Plugins.SettingsProfile = {
    init : init,
    updateFromJson: updateFromJson
  };
}());
/* --------------------------------------------------------------
         js/plugins/helpLinks.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  The Espruino tutorial
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {

    var icon = Espruino.Core.App.findIcon("help");
    if(icon) {
      icon.addMenuItem({
        id: "forum",
        icon: "chat",
        title: "Forum",
        order: 100,
        click: function(){
          window.open("http://forum.espruino.com");
        }
      });
      icon.addMenuItem({
        id: "troubleshooting",
        icon: "book",
        title: "Troubleshooting",
        order: 100,
        click: function(){
          window.open("http://www.espruino.com/Troubleshooting");
        }
      });
    }
  }

  Espruino.Plugins.HelpLinks = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         js/plugins/arrows.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Plugin that adds arrow icons
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    if (Espruino.Core.Utils.isAppleDevice())
      addIcons();
  }

  function addIcons() {
    Espruino.Core.App.addIcon({
      id: "lastcommand",
      icon: "up",
      title : "Last Command",
      order: 300,
      area: {
        name: "terminal",
        position: "bottom"
      },
      click: function() { sendCommand(String.fromCharCode(27,91,65)); }
    });
    Espruino.Core.App.addIcon({
      id: "nextcommand",
      icon: "down",
      title : "Next Command",
      order: 400,
      area: {
        name: "terminal",
        position: "bottom"
      },
      click: function() { sendCommand(String.fromCharCode(27,91,66)); }
    });
  }

  function sendCommand(s) {
    Espruino.Core.Terminal.typeCharacters(s);
  }

  Espruino.Plugins.Arrows = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         js/plugins/offline.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Offline mode
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  if (typeof chrome=="undefined" || !chrome.storage || !chrome.storage.local) {
    console.log("No chrome.storage API - disabling Offline mode");
    return;
  }

  var OFFLINE_URL = "https://www.espruino.com/files/offline.zip"
  var DATA_SEPARATOR = "|";

  var OFFLINE_DATA;
  var OFFLINE_DATE;


  function init() {
    Espruino.addProcessor("getURL", getOffline);

    chrome.storage.local.get( "OFFLINE_DATA", function (data) {
      var dataHex = data["OFFLINE_DATA"];
      console.log("GET chrome.storage.local.OFFLINE_DATA = "+(dataHex?dataHex.length:0)+" bytes");
      if (dataHex) {
        var colon = dataHex.indexOf(DATA_SEPARATOR);
        if (colon>=0) OFFLINE_DATE = dataHex.substr(0,colon);
        dataHex = dataHex.substr(colon+1);
        var data = new Uint8Array(dataHex.length/2);
        for (var i=0;i<data.length;i++)
          data[i] = parseInt(dataHex.substr(i*2,2),16);
        OFFLINE_DATA = data.buffer;
      }
    });

    Espruino.Core.Config.addSection("Offline Mode", {
      sortOrder:500,
      description: "This allows you to download common files (modules, board "+
                   "description files) and then use them even when you're not "+
                   "connected to the internet",
    });
    Espruino.Core.Config.add("OFFLINE_ENABLED", {
      section : "Offline Mode",
      name : "Enable offline mode",
      description : "Check the button to the right to enable offline mode - if we have the required files (shown below)",
      type : "boolean",
      defaultValue : false,
      onChange : function(newValue) {
        if (newValue) {
          if (!OFFLINE_DATA) {
            getOfflineData();
          }
        }
      }
    });
    Espruino.Core.Config.add("OFFLINE_DATA", {
      section : "Offline Mode",
      name : "Offline Data",
      getDescriptionHTML : function() {
        if (OFFLINE_DATE)
          return "Offline data last downloaded "+OFFLINE_DATE
        else
          return "No Offline data"
      },
      type : "none",
      defaultValue : '',
    });
    Espruino.Core.Config.add("OFFLINE_DATA_DOWNLOAD", {
      section : "Offline Mode",
      name : "Download offline data",
      description : "Click this button to automatically download new offline data "+
                    "if you have an internet connection",
      type : "button",
      label : "Download offline data",
      defaultValue : '',
      onClick : getOfflineData
    });
    Espruino.Core.Config.add("OFFLINE_DATA_UPLOAD", {
      section : "Offline Mode",
      name : "Upload offline data from file",
      descriptionHTML : "If you're behind a firewall the Web IDE may be unable to "+
      "download files from the internet. If so, you'll need to manually download "+
      '<a href="http://www.espruino.com/files/offline.zip">http://www.espruino.com/files/offline.zip</a> to your computer, click this button '+
      "and select it from your local disk.",
      type : "button",
      label : "Upload offline data from local file",
      defaultValue : '',
      onClick : uploadOfflineData
    });
  }

  function offlineDataLoaded(data /*Uint8Array*/) {
    Espruino.Core.Status.setStatus("Downloaded "+data.length+" bytes. Saving to local storage");
    OFFLINE_DATE = (new Date()).toLocaleString("en-US");
    OFFLINE_DATA = data?data.buffer:undefined;

    var urlBase = Espruino.Config.BOARD_JSON_URL;
    if (urlBase[urlBase.length-1]!="/")
      urlBase += "/";

    // do a quick sanity test
    findOffline(urlBase+"espruino.json", function(d) {
      if (d===undefined) {
        OFFLINE_DATE = undefined;
        OFFLINE_DATA = undefined;
        var popup = Espruino.Core.App.openPopup({
          title: "Offline Mode",
          padding: true,
          contents: "<p><b>The offline file couldn't be found or was corrupt.</b><p>",
          position: "center",
          buttons : [{ name:"Ok", callback : function() {
            popup.close();
          }}]
        });
      } else {
        var dataHex = OFFLINE_DATE+DATA_SEPARATOR;
        for (var i=0;i<data.length;i++)
          dataHex += (256+data[i]).toString(16).substr(-2);
        console.log("SET chrome.storage.local.OFFLINE_DATA = "+(dataHex?dataHex.length:0)+" bytes");
        chrome.storage.local.set({ OFFLINE_DATA : dataHex });
        Espruino.Core.Status.setStatus("Done.");
        Espruino.Core.MenuSettings.refresh();
      }
    });
  }

  function getOfflineData() {
    Espruino.Core.Status.setStatus("Downloading offline data");
    /*Espruino.Core.Utils.getURL(OFFLINE_URL, function(data) {
      OFFLINE_DATA = data;
      Espruino.Core.Status.setStatus("Loaded data - "+data.length+" bytes");
      for (var i=0;i<16;i++)
        console.log(data.charCodeAt(i).toString(16));
    });*/
    var xhr = new XMLHttpRequest();
    xhr.responseType = "arraybuffer";
    xhr.addEventListener("load", function () {
      if (xhr.status === 200) {
        var data = new Uint8Array(xhr.response);
        offlineDataLoaded(data);
      } else
        Espruino.Core.Notifications.error("Error downloading file - HTTP "+xhr.status);
    });
    xhr.addEventListener("error", function () {
      callback("Error downloading file");
    });
    xhr.open("GET", OFFLINE_URL, true);
    xhr.send(null);
  }

  function uploadOfflineData() {
    Espruino.Core.Utils.fileOpenDialog({
        id:"offline",
        type:"arraybuffer",
        mimeType:".zip,application/zip"}, function(data) {
      if (data===undefined) return;
      offlineDataLoaded(new Uint8Array(data));
    });
  }

  function findOffline(url, callback) {
    // not something we can handle
    var fileName;
    // modules
    var urlBase = Espruino.Config.MODULE_URL;
    if (urlBase[urlBase.length-1]!="/")
      urlBase += "/";
    if (url.substr(0,urlBase.length)==urlBase)
      fileName = "modules/"+url.substr(urlBase.length);
    // board JSON
    urlBase = Espruino.Config.BOARD_JSON_URL;
    if (urlBase[urlBase.length-1]!="/")
      urlBase += "/";
    if (url.substr(0,urlBase.length)==urlBase)
      fileName = "json/"+url.substr(urlBase.length);
    console.log("Searching for "+fileName);
    var zip = new JSZip();
    zip.loadAsync(OFFLINE_DATA).then(function(zip) {
      var f = zip.file(fileName);
      if (f) {
        console.log(fileName+" found in offline archive");
        return f.async("string");
      } else {
        console.log(fileName+" not found in offline archive");
        return undefined; // no file found
      }
    }).then(function (data) {
      callback(data);
    }).catch(function(err) {
      console.log(err);
      callback();
    });
  }

  function getOffline(data, callback) {
    if (!Espruino.Config.OFFLINE_ENABLED ||
        !OFFLINE_DATA)
      return callback(data); // continue as normal

    findOffline(data.url, function(result) {
      if (result) callback({data: result});
      else callback(data); // continue as normal
    })
  }

  Espruino.Plugins.Offline = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         js/plugins/storage.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  A plugin to handle uploading and downloading files from storage
 ------------------------------------------------------------------
**/
"use strict";
(function(){
  /// Chunk size the files are downloaded in
  var CHUNKSIZE = 384;// or any multiple of 96 for atob/btoa
  var MAX_FILENAME_LEN = 28; // 28 on 2v05 and newer, 8 on 2v04 and older
  var STORAGEFILE_POSTFIX = " (StorageFile)";
  var iconSDCard;

  function init() {
    Espruino.Core.Config.add("SHOW_SDCARD_ICON", {
      section : "Communications",
      name : "SD Card (fs) Support",
      description : "Show an icon that allows you to access files on an SD Card (if your device supports it)",
      type : "boolean",
      defaultValue : false,
      onChange : function(newValue) { showSDCardIcon(newValue); }
    });
    Espruino.Core.App.addIcon({
      id: "storage",
      icon: "storage",
      title : "Access files in device's storage",
      order: 300,
      area: {
        name: "code",
        position: "top"
      },
      click: function() {
        Espruino.Core.MenuPortSelector.ensureConnected(function() {
          showStorage({});
        });
      }
    });
    showSDCardIcon(Espruino.Config.SHOW_SDCARD_ICON);
  }

  function showSDCardIcon(show) {
    if (show) {
      iconSDCard = Espruino.Core.App.addIcon({
        id: "storage",
        icon: "sdcard",
        title : "Access files on SD Card",
        order: 300,
        area: {
          name: "code",
          position: "top"
        },
        click: function() {
          Espruino.Core.MenuPortSelector.ensureConnected(function() {
            showStorage({fs:1});
          });
        }
      });
    } else {
      if (iconSDCard!==undefined) {
        iconSDCard.remove();
        iconSDCard = undefined;
      }
    }
  }

  function getTitle(options) {
    if (options && options.fs==1)
      return "SD Card";
    return "Device Storage";
  }

  function formatFilename(fileName) {
    if (!Espruino.Core.Utils.isASCII(fileName))
      return JSON.stringify(fileName);
    return fileName;
  }

  /// Get the file path when writing to fs
  function getFSFilePath(options, fileName) {
    if (options.dir && options.dir.length>0)
      return options.dir+"/"+fileName;
    return fileName;
  }

  function downloadFile(options, fileName, callback) {
    Espruino.Core.Status.showStatusWindow(getTitle(options), "Downloading "+JSON.stringify(getFSFilePath(options, fileName)));
    // if it was a storagefile, remove the last char - downloadFile will work it out automatically
    if (fileName.endsWith(STORAGEFILE_POSTFIX)) {
      fileName = fileName.substr(0, fileName.length-STORAGEFILE_POSTFIX.length);
    }
    Espruino.Core.Utils.downloadFile(getFSFilePath(options, fileName), function(contents) {
      Espruino.Core.Status.hideStatusWindow();
      if (contents===undefined)
        return Espruino.Core.Notifications.error("Timed out receiving file")
      callback(contents);
    }, {fs:options.fs});
  }

  function uploadFile(options, fileName, contents, callback) {
    Espruino.Core.Status.showStatusWindow(getTitle(options), "Uploading "+JSON.stringify(getFSFilePath(options, fileName)));
    Espruino.Core.Utils.uploadFile(getFSFilePath(options, fileName), contents, function() {
      Espruino.Core.Status.hideStatusWindow();
      callback();
    }, {fs:options.fs});
  }

  function deleteFile(options, fileName, callback) {
    if (options.fs) {
      Espruino.Core.Utils.executeStatement(`require("fs").unlink(${JSON.stringify(getFSFilePath(options, fileName))})\n`, callback);
    } else if (fileName.endsWith(STORAGEFILE_POSTFIX)) {
      fileName = fileName.substr(0, fileName.length-STORAGEFILE_POSTFIX.length);
      Espruino.Core.Utils.executeStatement(`require("Storage").open(${JSON.stringify(fileName)},"r").erase()\n`, callback);
    } else {
      Espruino.Core.Utils.executeStatement(`require("Storage").erase(${JSON.stringify(fileName)})\n`, callback);
    }
  }

  function getFileList(options, callback) {
    //callback([{fn:'"a"'},{fn:'"b"'},...]);
    // and d:0/1 for SD card if a directory
    let cmd = options.fs ?
      `require('fs').readdirSync(${options.dir?JSON.stringify(options.dir):""}).forEach(x=>{ if (x!="." && x!="..") print(JSON.stringify({fn:x,d:0|require("fs").statSync(${options.dir?JSON.stringify(options.dir+"/")+"+":""}x).dir}))});` :
      `require('Storage').list().forEach(x=>print(JSON.stringify({fn:x})));`
    Espruino.Core.Utils.executeStatement(cmd, function(files) {
      var fileList = [];
      try {
        fileList = Espruino.Core.Utils.parseJSONish("["+files.trim().replace(/\n/g,",")+"]");
        fileList.sort((a,b) => {
          if (a.d != b.d) return (0|b.d) - (0|a.d); // dirs first
          let afn = a.fn.toLowerCase();
          let bfn = b.fn.toLowerCase();
          if (afn<bfn) return -1;
          if (afn>bfn) return 1;
          return 0;
        });
        // fileList.sort(); // ideally should ignore first char for sorting
      } catch (e) {
        console.log("getFileList",e);
        fileList = [];
      }
      callback(fileList);
    });
  }

  /// Just dump the given data as hex
  function decodeHexDump(data) {
    var hexdump = "";
    var len = 16;
    for (var a=0;a<data.length;a+=len) {
      var s = data.substr(a,len);
      var line = ("00000000"+a.toString(16)).substr(-8)+": ";
      var i;
      for (i=0;i<s.length;i++)
        line +=  ("0"+s.charCodeAt(i).toString(16)).substr(-2)+" "
      for (;i<len;i++)
        line += "   ";
      for (i=0;i<s.length;i++) {
        var c = s.charCodeAt(i);
        if (c>=32 && c<128) line += s[i];
        else line += ".";
      }
      hexdump += line+"\n";
    }
    return hexdump;
  }

  function showUploadFileDialog(options) {
    Espruino.Core.Utils.fileOpenDialog({
        id:"storage",
        type:"text",
        multi:true
        // mineType : anything
      },function(contents, mimeType, fileName) {
      var contentsToUpload = contents;
      var imageTypes = ['image/gif', 'image/jpeg', 'image/png'];
      var audioTypes = ['audio/mpeg', 'audio/wav', 'audio/ogg', 'audio/aac'];
      var isImage = imageTypes.includes(mimeType);
      var isAudio = audioTypes.includes(mimeType);
      var html = `<div>
      <p>Uploading <span id="ressize">${contents.length}</span> bytes to Storage.</p>
      <label for="filename">Filename (max ${MAX_FILENAME_LEN} chars)</label><br/>
      <input name="filename" class="filenameinput" type="text" maxlength="${MAX_FILENAME_LEN}" style="border: 2px solid #ccc;" value="${Espruino.Core.Utils.escapeHTML(fileName.substr(0,MAX_FILENAME_LEN))}"></input>
      `;
      if (isImage) {
        html += `<p>The file you uploaded is an image...</p>
        <input type="checkbox" id="convert" checked>Convert for Espruino</input><br/>
        <div id="imageoptions">
        <input type="checkbox" id="transparent" checked>Transparency?</input><br/>
        <input type="checkbox" id="inverted">Inverted?</input><br/>
        <input type="checkbox" id="autoCrop">Crop?</input><br/>
        Colours: <select id="colorStyle"></select><br/>
        Diffusion: <select id="diffusion"></select><br/>
        Brightness:<input type="range" id="brightness" min="-127" max="127" value="0"></input><br/>
        Contrast:<input type="range" id="contrast" min="-255" max="255" value="0"></input><br/>

        <table width="100%">
        <tr><th>Original</th>
            <th>Converted</th></tr>
        <tr><td><canvas id="canvas1" style="display:none;"></canvas></td>
            <td><canvas id="canvas2" style="display:none;"></canvas></td>
        </tr></table>
        </div>
        `;
      } else if (isAudio) {
         html += `<p>The file you uploaded is audio...</p>
        <input type="checkbox" id="convert" checked>Convert for Espruino</input><br/>
        <div id="audiooptions">
        If converted, the file will be 8 bit, unsigned raw data that can be used with the <code>Waveform</code> class.<br/>
        Sample Rate: <input type="number" id="samplerate" min="1000" max="32000" value="4000"></input><br/>
        <br/>
        <div id="status"></div>
        </div>
        `;
      }
      html += `</div>`;

      var popup = Espruino.Core.App.openPopup({
        id: "storagefileupload",
        title: "Upload a file",
        padding: true,
        contents: html,
        position: "auto",
        buttons : [{ name:"Ok", callback : function() {
          var filename = popup.window.querySelector(".filenameinput").value;
          if (!filename.length) {
            Espruino.Core.Notifications.error("You must supply a filename")
            return;
          }
          if (filename.length>MAX_FILENAME_LEN) {
            Espruino.Core.Notifications.error("Filename greater than "+MAX_FILENAME_LEN+" characters")
            return;
          }
          console.log("Write file to Storage as "+JSON.stringify(filename));
          uploadFile(options, filename, contentsToUpload, function() {
            console.log("Upload complete!");
          });
          popup.close();
        }}, { name:"Cancel", callback : function() { popup.close(); }}]
      });
      popup.window.querySelector(".filenameinput").focus();
      if (isImage) {
        var controls = {
          convert : popup.window.querySelector("#convert"),
          optionsdiv : popup.window.querySelector("#imageoptions"),
          transparent : popup.window.querySelector("#transparent"),
          inverted : popup.window.querySelector("#inverted"),
          autoCrop : popup.window.querySelector("#autoCrop"),
          diffusion : popup.window.querySelector("#diffusion"),
          brightness : popup.window.querySelector("#brightness"),
          contrast : popup.window.querySelector("#contrast"),
          colorStyle : popup.window.querySelector("#colorStyle"),
          canvas1 : popup.window.querySelector("#canvas1"),
          canvas2 : popup.window.querySelector("#canvas2"),
          ressize : popup.window.querySelector("#ressize")
        };
        imageconverter.setFormatOptions(controls.colorStyle);
        imageconverter.setDiffusionOptions(controls.diffusion);
        controls.convert.addEventListener("change", recalculateImage);
        controls.transparent.addEventListener("change", recalculateImage);
        controls.inverted.addEventListener("change", recalculateImage);
        controls.autoCrop.addEventListener("change", recalculateImage);
        controls.diffusion.addEventListener("change", recalculateImage);
        controls.brightness.addEventListener("change", recalculateImage);
        controls.contrast.addEventListener("change", recalculateImage);
        controls.colorStyle.addEventListener("change", recalculateImage);

        var img;
        function recalculateImage() {
          var convert = controls.convert.checked;
          if (!convert || (img === undefined)) {
            contentsToUpload = contents;
            controls.optionsdiv.style = "display:none;";
          } else {
            controls.optionsdiv.style = "display:block;";

            var options = {};
            options.output = "raw";
            options.diffusion = controls.diffusion.options[controls.diffusion.selectedIndex].value;
            options.compression = false;
            options.transparent = controls.transparent.checked;
            options.inverted = document.getElementById("inverted").checked;
            options.autoCrop = controls.autoCrop.checked;
            options.brightness = 0|controls.brightness.value;
            options.contrast = 0|controls.contrast.value;
            options.mode = controls.colorStyle.options[controls.colorStyle.selectedIndex].value;

            controls.canvas1.width = img.width;
            controls.canvas1.height = img.height;
            controls.canvas1.style = "display:block;border:1px solid black;margin:8px;"
            var ctx1 = canvas1.getContext("2d");
            ctx1.drawImage(img,0,0);

            var imageData = ctx1.getImageData(0, 0, img.width, img.height);
            var rgba = imageData.data;
            options.rgbaOut = rgba;
            options.width = img.width;
            options.height = img.height;
            contentsToUpload = imageconverter.RGBAtoString(rgba, options);

            controls.canvas2.width = options.width;
            controls.canvas2.height = options.height;
            controls.canvas2.style = "display:block;border:1px solid black;margin:8px;"
            var ctx2 = canvas2.getContext("2d");
            ctx2.fillStyle = 'white';
            ctx2.fillRect(options.width, 0, options.width, options.height);
            var outputImageData = new ImageData(options.rgbaOut, options.width, options.height);
            ctx2.putImageData(outputImageData,0,0);

            // checkerboard for transparency on original image
            var imageData = ctx1.getImageData(0, 0, img.width, img.height);
            imageconverter.RGBAtoCheckerboard(imageData.data, {width:img.width,height:img.height});
            ctx1.putImageData(imageData,0,0);
          }

          controls.ressize.innerHTML = contentsToUpload.length+" Bytes";
        }
        img = new Image();
        img.onload = recalculateImage;
        img.src = "data:"+mimeType+";base64,"+Espruino.Core.Utils.btoa(contents);
      } else if (isAudio) {
        var controls = {
          convert : popup.window.querySelector("#convert"),
          optionsdiv : popup.window.querySelector("#audiooptions"),
          samplerate : popup.window.querySelector("#samplerate"),
          status : popup.window.querySelector("#status"),
          ressize : popup.window.querySelector("#ressize")
        }
        controls.convert.addEventListener("change", recalculateAudio);
        controls.samplerate.addEventListener("change", recalculateAudio);

        function recalculateAudio() {
          var convert = controls.convert.checked;
          if (!convert) {
            contentsToUpload = contents;
            controls.optionsdiv.style = "display:none;";
          } else {
            controls.optionsdiv.style = "display:block;";
            const SAMPLERATE = 0|controls.samplerate.value;
            const offlineAudioContext = new OfflineAudioContext(1, SAMPLERATE*10/*buffer length*/, SAMPLERATE);
            const wavArray = new Uint8Array(contents.length);
            for (let i = 0; i < contents.length; i++)
              wavArray[i] = contents.charCodeAt(i);
            offlineAudioContext.decodeAudioData(wavArray.buffer)
              .then(audioBuffer => {
                const bufferLength = audioBuffer.length;
                const numberOfChannels = audioBuffer.numberOfChannels;
                // Get the PCM data from the audio buffer
                const pcmData = new Float32Array(bufferLength);
                audioBuffer.copyFromChannel(pcmData, 0, 0); // copy from first channel only
                // TODO: could average channels?
                // convert it to 8 bit format and append
                let wavContents = "";
                let length = Math.min(pcmData.length, SAMPLERATE*30); // max 30 seconds!!
                let isTruncated = length!=pcmData.length;
                for (let i = 0; i < length; i++) {
                  var v = 128+Math.round(pcmData[i] * 127);
                  if (v<0) v=0;
                  if (v>255) v=255;
                  wavContents += String.fromCharCode(v);
                }
                contentsToUpload = wavContents;
                controls.ressize.innerHTML = contentsToUpload.length+" Bytes";
                controls.status.innerText = `Encoded to: ${(length/SAMPLERATE).toFixed(1)} sec, ${wavContents.length} bytes` + (isTruncated?" (TRUNCATED!)":"");
              }, error => {
                console.error('Error decoding audio data:', error);
              });
          }
        }
        recalculateAudio();
      }
    });
  }

  function showViewFileDialog(options, fileName, contents, wasDecoded) {
    console.log("View",fileName);
    var buttons = [{ name:"Ok", callback : function() { popup.close(); }}];
    var html;
    if (Espruino.Core.Utils.isASCII(contents) || wasDecoded) {
      html = '<div style="overflow-y:auto;font-family: monospace;">'+
        Espruino.Core.Utils.escapeHTML(contents).replace(/\n/g,"<br>")+'</div>';
        buttons.push({ name:"Copy to Editor", callback : function() {
          Espruino.Core.File.setJSCode(contents, {fileName: fileName, isStorageFile: true});
          popup.close();
        }});
    } else {
      var img = imageconverter.stringToImageHTML(contents,{transparent:false});
      if (img) { // it's a valid image
        html = '<div style="text-align:center;padding-top:10px;min-width:200px;">'+
                '<a href="'+imageconverter.stringToImageURL(contents,{transparent:true})+'" download="image.png">'+
                img+'</a></div>';
      } else {
        html = '<div style="overflow:auto;font-family: monospace;">'+
          Espruino.Core.Utils.escapeHTML(decodeHexDump(contents)).replace(/\n/g,"<br>")+'</div>';
        if (fileName.startsWith(".boot") || fileName.endsWith(".js") ||
            Espruino.Plugins.Pretokenise.isTokenised(contents)) {
          buttons.push({ name:"Decode JS", callback : function() {
            popup.close();
            showViewFileDialog(options, fileName, Espruino.Plugins.Pretokenise.untokenise(contents), true);
          }});
        }
      }
    }
    buttons.push({ name:"Save", callback : function() {
      popup.close();
      Espruino.Core.Utils.fileSaveDialog(contents, fileName);
    }});
    var popup = Espruino.Core.App.openPopup({
      id: "storagefileview",
      title: "Contents of "+formatFilename(fileName),
      padding: true,
      contents: html,
      position: "auto",
      buttons : buttons
    });
    }

  function showDeleteFileDialog(options, fileName) {
    var popup = Espruino.Core.App.openPopup({
      id: "storagefiledelete",
      title: "Really remove "+formatFilename(fileName)+"?",
      padding: true,
      contents: "Do you really want to remove this file?",
      position: "auto",
      buttons : [{ name:"Yes", callback : function() {
        deleteFile(options, fileName, function() {
          Espruino.Core.Status.setStatus("File deleted.");
          showStorage(options);
        });
        popup.close();
      }},{ name:"No", callback : function() { popup.close(); }}]
    });
  }

  function showStorage(options) {
    var popup = Espruino.Core.App.openPopup({
      id: "storage",
      title: getTitle(options),
      padding: false,
      contents: Espruino.Core.HTML.htmlLoading(),
      position: "auto",
    });
    getFileList(options, function(fileList) {
      var items = [{
        title: "Upload files",
        icon : "icon-folder-open",
        callback : function() {
          popup.close();
          showUploadFileDialog(options);
        }
      }];
      if (!options.fs) items.push({
        title : "Download from RAM",
        right: [{ title:"View", icon:"icon-eye",
          callback : function() { // view the file
            Espruino.Core.Utils.executeStatement(`dump();`, function(contents) {
              showViewFileDialog(options, "RAM", contents);
            });
          }
        },{ title:"Save", icon:"icon-save",
          callback : function() { // Save the file
            Espruino.Core.Utils.executeStatement(`dump();`, function(contents) {
              Espruino.Core.Utils.fileSaveDialog(contents, "espruino.js");
            });
          }
        }]
      });

      fileList.filter(file=>{
        return file.fn.endsWith("\u0001");
      }).forEach(file=>{
        var prefix = file.fn.slice(0,-1);
        console.log("Found StorageFile "+prefix);
        // filter out any files with the same name
        fileList = fileList.filter(f=>f.fn.slice(0,-1) != prefix);
        // Add our new file at the end
        fileList.push({fn:prefix+STORAGEFILE_POSTFIX});
      });

      fileList.forEach(function(file) {
        items.push({
          title : formatFilename(file.fn),
          right: file.d ? [{ title:"Enter Subfolder", icon:"icon-folder",
            callback : function() { // view the file
              var o = Object.assign({}, options);
              o.dir = (o.dir?o.dir+"/":"")+file.fn;
              showStorage(o);
            }
          }] : [{ title:"View", icon:"icon-eye",
            callback : function() { // view the file
              downloadFile(options, file.fn, function(contents) {
                showViewFileDialog(options, file.fn, contents);
              });
            }
          },{ title:"Run file", icon:"icon-debug-go",
            callback : function() { // Save the file
              popup.close();
              Espruino.Core.Serial.write(`\x03\x10load(${JSON.stringify(file.fn)})\n`, false, function() {
                Espruino.Core.Notifications.success(`${JSON.stringify(file.fn)} loaded`, true);
              });
            }
          },{ title:"Save", icon:"icon-save",
            callback : function() { // Save the file
              downloadFile(options, file.fn, function(contents) {
                Espruino.Core.Utils.fileSaveDialog(contents, file.fn);
              });
            }
          },{ title:"Delete", icon:"icon-bin",
            callback : function() { // Delete the file
              popup.close();
              showDeleteFileDialog(options, file.fn);
            }
          }]
        });
      });

      popup.setContents(Espruino.Core.HTML.domList(items));

    });
  }

  /** Pop up a file selector for files in Storage... Must be connected
  options = {
    title // title for window
    allowNew // add an option to type in a new filename
    fs // 0=Storage (default), 1=SD Card
    dir // if sd card, the directory
  }
  */
  function showFileChooser(options, callback) {
    var popup = Espruino.Core.App.openPopup({
      id: "storagefilechooser",
      title: options.title,
      padding: false,
      contents: Espruino.Core.HTML.htmlLoading(),
      position: "auto",
    });
    getFileList(options, function(fileList) {
      var items = [];

      if (options.allowNew) {
        items.push({
          title: "New file",
          icon : "icon-folder-open",
          callback : function() {
            popup.close();
            popup = Espruino.Core.App.openPopup({
              id: "storagefilenew",
              title: "New file",
              padding: true,
              contents: `<label for="filename">Filename (max ${MAX_FILENAME_LEN} chars)</label><br/>
              <input name="filename" class="filenameinput" type="text" maxlength="${MAX_FILENAME_LEN}" style="border: 2px solid #ccc;" value=""></input>`,
              position: "auto",
              buttons : [{ name:"Ok", callback : function() {
                var filename = popup.window.querySelector(".filenameinput").value;
                if (!filename.length) {
                  Espruino.Core.Notifications.error("You must supply a filename")
                  return;
                }
                if (filename.length>MAX_FILENAME_LEN) {
                  Espruino.Core.Notifications.error(`Filename greater than ${MAX_FILENAME_LEN} characters`)
                  return;
                }
                popup.close();
                callback(getFSFilePath(options, filename));
              }}, { name:"Cancel", callback : function() { popup.close(); }}]
            });
            popup.window.querySelector(".filenameinput").focus();
          }
        });
      }

      // filter out any 'StorageFile' files
      fileList.filter(file=>{
        return file.fn.endsWith("\u0001");
      }).forEach(file=>{
        var prefix = file.fn.slice(0,-1);
        fileList = fileList.filter(f=>f.fn.slice(0,-1) != prefix);
      });

      fileList.forEach(function(file) {
        items.push({
          title : formatFilename(file.fn),
          icon : file.d ? "icon-folder" : undefined,
          callback : function() {
            if (file.d) {
              popup.close();
              var o = Object.assign({}, options);
              o.dir = (o.dir?o.dir+"/":"")+file.fn;
              showFileChooser(o, callback);
            } else {
              popup.close();
              callback(getFSFilePath(options, file.fn));
            }
          }
        });
      });
      if (fileList.length==0) {
        items.push({
          title : "No files found",
          callback : function() {
            popup.close();
          }
        });
      }
      popup.setContents(Espruino.Core.HTML.domList(items));
    });
  }

  Espruino.Plugins.Storage = {
    init : init,
    showFileChooser : showFileChooser
  };
}());
/* --------------------------------------------------------------
         js/libs/imageconverter.js
   -------------------------------------------------------------- */
/* Copyright 2024 Gordon Williams, gw@pur3.co.uk
   https://github.com/espruino/EspruinoWebTools
*/
(function (root, factory) {
    if (typeof module === 'object' && module.exports) {
        // Node. Does not work with strict CommonJS, but
        // only CommonJS-like environments that support module.exports,
        // like Node.
        module.exports = factory(root.heatshrink);
    } else {
        // Browser globals (root is window)
        root.imageconverter = factory(root.heatshrink);
    }
}(typeof self !== 'undefined' ? self : this, function (heatshrink) {

  const PALETTE = {
   VGA: [0x000000, 0x0000a8, 0x00a800, 0x00a8a8, 0xa80000, 0xa800a8, 0xa85400, 0xa8a8a8, 0x545454, 0x5454fc, 0x54fc54, 0x54fcfc, 0xfc5454, 0xfc54fc, 0xfcfc54, 0xfcfcfc, 0x000000, 0x141414, 0x202020, 0x2c2c2c, 0x383838, 0x444444, 0x505050, 0x606060, 0x707070, 0x808080, 0x909090, 0xa0a0a0, 0xb4b4b4, 0xc8c8c8, 0xe0e0e0, 0xfcfcfc, 0x0000fc, 0x4000fc, 0x7c00fc, 0xbc00fc, 0xfc00fc, 0xfc00bc, 0xfc007c, 0xfc0040, 0xfc0000, 0xfc4000, 0xfc7c00, 0xfcbc00, 0xfcfc00, 0xbcfc00, 0x7cfc00, 0x40fc00, 0x00fc00, 0x00fc40, 0x00fc7c, 0x00fcbc, 0x00fcfc, 0x00bcfc, 0x007cfc, 0x0040fc, 0x7c7cfc, 0x9c7cfc, 0xbc7cfc, 0xdc7cfc, 0xfc7cfc, 0xfc7cdc, 0xfc7cbc, 0xfc7c9c, 0xfc7c7c, 0xfc9c7c, 0xfcbc7c, 0xfcdc7c, 0xfcfc7c, 0xdcfc7c, 0xbcfc7c, 0x9cfc7c, 0x7cfc7c, 0x7cfc9c, 0x7cfcbc, 0x7cfcdc, 0x7cfcfc, 0x7cdcfc, 0x7cbcfc, 0x7c9cfc, 0xb4b4fc, 0xc4b4fc, 0xd8b4fc, 0xe8b4fc, 0xfcb4fc, 0xfcb4e8, 0xfcb4d8, 0xfcb4c4, 0xfcb4b4, 0xfcc4b4, 0xfcd8b4, 0xfce8b4, 0xfcfcb4, 0xe8fcb4, 0xd8fcb4, 0xc4fcb4, 0xb4fcb4, 0xb4fcc4, 0xb4fcd8, 0xb4fce8, 0xb4fcfc, 0xb4e8fc, 0xb4d8fc, 0xb4c4fc, 0x000070, 0x1c0070, 0x380070, 0x540070, 0x700070, 0x700054, 0x700038, 0x70001c, 0x700000, 0x701c00, 0x703800, 0x705400, 0x707000, 0x547000, 0x387000, 0x1c7000, 0x007000, 0x00701c, 0x007038, 0x007054, 0x007070, 0x005470, 0x003870, 0x001c70, 0x383870, 0x443870, 0x543870, 0x603870, 0x703870, 0x703860, 0x703854, 0x703844, 0x703838, 0x704438, 0x705438, 0x706038, 0x707038, 0x607038, 0x547038, 0x447038, 0x387038, 0x387044, 0x387054, 0x387060, 0x387070, 0x386070, 0x385470, 0x384470, 0x505070, 0x585070, 0x605070, 0x685070, 0x705070, 0x705068, 0x705060, 0x705058, 0x705050, 0x705850, 0x706050, 0x706850, 0x707050, 0x687050, 0x607050, 0x587050, 0x507050, 0x507058, 0x507060, 0x507068, 0x507070, 0x506870, 0x506070, 0x505870, 0x000040, 0x100040, 0x200040, 0x300040, 0x400040, 0x400030, 0x400020, 0x400010, 0x400000, 0x401000, 0x402000, 0x403000, 0x404000, 0x304000, 0x204000, 0x104000, 0x004000, 0x004010, 0x004020, 0x004030, 0x004040, 0x003040, 0x002040, 0x001040, 0x202040, 0x282040, 0x302040, 0x382040, 0x402040, 0x402038, 0x402030, 0x402028, 0x402020, 0x402820, 0x403020, 0x403820, 0x404020, 0x384020, 0x304020, 0x284020, 0x204020, 0x204028, 0x204030, 0x204038, 0x204040, 0x203840, 0x203040, 0x202840, 0x2c2c40, 0x302c40, 0x342c40, 0x3c2c40, 0x402c40, 0x402c3c, 0x402c34, 0x402c30, 0x402c2c, 0x40302c, 0x40342c, 0x403c2c, 0x40402c, 0x3c402c, 0x34402c, 0x30402c, 0x2c402c, 0x2c4030, 0x2c4034, 0x2c403c, 0x2c4040, 0x2c3c40, 0x2c3440, 0x2c3040, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0xFFFFFF],
  WEB : [0x000000,0x000033,0x000066,0x000099,0x0000cc,0x0000ff,0x003300,0x003333,0x003366,0x003399,0x0033cc,0x0033ff,0x006600,0x006633,0x006666,0x006699,0x0066cc,0x0066ff,0x009900,0x009933,0x009966,0x009999,0x0099cc,0x0099ff,0x00cc00,0x00cc33,0x00cc66,0x00cc99,0x00cccc,0x00ccff,0x00ff00,0x00ff33,0x00ff66,0x00ff99,0x00ffcc,0x00ffff,0x330000,0x330033,0x330066,0x330099,0x3300cc,0x3300ff,0x333300,0x333333,0x333366,0x333399,0x3333cc,0x3333ff,0x336600,0x336633,0x336666,0x336699,0x3366cc,0x3366ff,0x339900,0x339933,0x339966,0x339999,0x3399cc,0x3399ff,0x33cc00,0x33cc33,0x33cc66,0x33cc99,0x33cccc,0x33ccff,0x33ff00,0x33ff33,0x33ff66,0x33ff99,0x33ffcc,0x33ffff,0x660000,0x660033,0x660066,0x660099,0x6600cc,0x6600ff,0x663300,0x663333,0x663366,0x663399,0x6633cc,0x6633ff,0x666600,0x666633,0x666666,0x666699,0x6666cc,0x6666ff,0x669900,0x669933,0x669966,0x669999,0x6699cc,0x6699ff,0x66cc00,0x66cc33,0x66cc66,0x66cc99,0x66cccc,0x66ccff,0x66ff00,0x66ff33,0x66ff66,0x66ff99,0x66ffcc,0x66ffff,0x990000,0x990033,0x990066,0x990099,0x9900cc,0x9900ff,0x993300,0x993333,0x993366,0x993399,0x9933cc,0x9933ff,0x996600,0x996633,0x996666,0x996699,0x9966cc,0x9966ff,0x999900,0x999933,0x999966,0x999999,0x9999cc,0x9999ff,0x99cc00,0x99cc33,0x99cc66,0x99cc99,0x99cccc,0x99ccff,0x99ff00,0x99ff33,0x99ff66,0x99ff99,0x99ffcc,0x99ffff,0xcc0000,0xcc0033,0xcc0066,0xcc0099,0xcc00cc,0xcc00ff,0xcc3300,0xcc3333,0xcc3366,0xcc3399,0xcc33cc,0xcc33ff,0xcc6600,0xcc6633,0xcc6666,0xcc6699,0xcc66cc,0xcc66ff,0xcc9900,0xcc9933,0xcc9966,0xcc9999,0xcc99cc,0xcc99ff,0xcccc00,0xcccc33,0xcccc66,0xcccc99,0xcccccc,0xccccff,0xccff00,0xccff33,0xccff66,0xccff99,0xccffcc,0xccffff,0xff0000,0xff0033,0xff0066,0xff0099,0xff00cc,0xff00ff,0xff3300,0xff3333,0xff3366,0xff3399,0xff33cc,0xff33ff,0xff6600,0xff6633,0xff6666,0xff6699,0xff66cc,0xff66ff,0xff9900,0xff9933,0xff9966,0xff9999,0xff99cc,0xff99ff,0xffcc00,0xffcc33,0xffcc66,0xffcc99,0xffcccc,0xffccff,0xffff00,0xffff33,0xffff66,0xffff99,0xffffcc,0xffffff],
  MAC16 : [
  0x000000, 0x444444, 0x888888, 0xBBBBBB,
  0x996633, 0x663300, 0x006600, 0x00aa00,
  0x0099ff, 0x0000cc, 0x330099, 0xff0099,
  0xdd0000, 0xff6600, 0xffff00, 0xffffff],
  lookup : function(palette,r,g,b,a, transparentCol) {
    if (isFinite(transparentCol) && a<128) return transparentCol;
    var maxd = 0xFFFFFF;
    var c = 0;
    palette.forEach(function(p,n) {
      var pr=(p>>16)&255;
      var pg=(p>>8)&255;
      var pb=p&255;
      var pa=(p>>24)&255;
      if (transparentCol=="palette" && pa<128) {
        // if this is a transparent palette entry,
        // either use it or ignore it depending on pixel transparency
        if (a<128) {
          maxd = 0;
          c = n;
        }
        return;
      }
      var dr = r-pr;
      var dg = g-pg;
      var db = b-pb;
      var d = dr*dr + dg*dg + db*db;
      if (d<maxd) {
        c = n;
        maxd=d;
      }
    });
    return c;
  }
};
  var TRANSPARENT_8BIT = 254;

  var FORMATS = {
    "1bit":{
      bpp:1,name:"1 bit black/white",
      fromRGBA:function(r,g,b) {
        var c = (r+g+b) / 3;
        var thresh = 128;
        return c>thresh;
      },toRGBA:function(c) {
        return c ? 0xFFFFFFFF : 0xFF000000;
      }
    },
    "2bitbw":{
      bpp:2,name:"2 bit greyscale",
      fromRGBA:function(r,g,b) {
        var c = (r+g+b) / 3;
        c += 31; // rounding
        if (c>255)c=255;
        return c>>6;
      },toRGBA:function(c) {
        c = c&3;
        c = c | (c<<2) | (c<<4) | (c<<6);
        return 0xFF000000|(c<<16)|(c<<8)|c;
      }
    },
    "4bitbw":{
      bpp:4,name:"4 bit greyscale",
      fromRGBA:function(r,g,b) {
        var c = (r+g+b) / 3;
        c += 7; // rounding
        if (c>255)c=255;
        return c>>4;
      },toRGBA:function(c) {
        c = c&15;
        c = c | (c<<4);
        return 0xFF000000|(c<<16)|(c<<8)|c;
      }
    },
    "8bitbw":{
      bpp:8,name:"8 bit greyscale",
      fromRGBA:function(r,g,b) {
        var c = (r+g+b)/3;
        if (c>255) c=255;
        return c;
      },toRGBA:function(c) {
        c = c&255;
        return 0xFF000000|(c<<16)|(c<<8)|c;
      }
    },
    "3bit":{
      bpp:3,name:"3 bit RGB",
      fromRGBA:function(r,g,b) {
        var thresh = 128;
        return (
          ((r>thresh)?4:0) |
          ((g>thresh)?2:0) |
          ((b>thresh)?1:0));
      },toRGBA:function(c) {
        return ((c&1 ? 0x0000FF : 0x000000) |
                (c&2 ? 0x00FF00 : 0x000000) |
                (c&4 ? 0xFF0000 : 0x000000) |
                0xFF000000);
      }
    },
    "4bit":{
      bpp:4,name:"4 bit ABGR",
      fromRGBA:function(r,g,b,a) {
        var thresh = 128;
        return (
          ((r>thresh)?1:0) |
          ((g>thresh)?2:0) |
          ((b>thresh)?4:0) |
          ((a>thresh)?8:0));
      },toRGBA:function(c) {
        if (!(c&8)) return 0;
        return ((c&1 ? 0xFF0000 : 0x000000) |
                (c&2 ? 0x00FF00 : 0x000000) |
                (c&4 ? 0x0000FF : 0x000000) |
                0xFF000000);
      }
    },
    "4bitmac":{
      bpp:4,name:"4 bit Mac palette",
      fromRGBA:function(r,g,b,a) {
        return PALETTE.lookup(PALETTE.MAC16,r,g,b,a, undefined /* no transparency */);
      },toRGBA:function(c) {
        return 0xFF000000|PALETTE.MAC16[c];
      }
    },
    "vga":{
      bpp:8,name:"8 bit VGA palette",
      fromRGBA:function(r,g,b,a) {
        return PALETTE.lookup(PALETTE.VGA,r,g,b,a, TRANSPARENT_8BIT);
      },toRGBA:function(c) {
        if (c==TRANSPARENT_8BIT) return 0;
        return 0xFF000000|PALETTE.VGA[c];
      }
    },
    "web":{
      bpp:8,name:"8 bit Web palette",
      fromRGBA:function(r,g,b,a) {
        return PALETTE.lookup(PALETTE.WEB,r,g,b,a, TRANSPARENT_8BIT);
      },toRGBA:function(c) {
        if (c==TRANSPARENT_8BIT) return 0;
        return 0xFF000000|PALETTE.WEB[c];
      }
    },
    "rgb565":{
      bpp:16,name:"16 bit RGB565",
      fromRGBA:function(r,g,b,a) {
        return (
          ((r&0xF8)<<8) |
          ((g&0xFC)<<3) |
          ((b&0xF8)>>3));
      },toRGBA:function(c) {
        var r = (c>>8)&0xF8;
        var g = (c>>3)&0xFC;
        var b = (c<<3)&0xF8;
        return 0xFF000000|(r<<16)|(g<<8)|b;
      }
    },
    "opt1bit":{
      bpp:1, optimalPalette:true,name:"Optimal 1 bit",
      fromRGBA:function(r,g,b,a,palette) {
        return PALETTE.lookup(palette.rgb888,r,g,b,a, "palette");
      },toRGBA:function(c,palette) {
        return palette.rgb888[c];
      }
    },
    "opt2bit":{
      bpp:2, optimalPalette:true,name:"Optimal 2 bit",
      fromRGBA:function(r,g,b,a,palette) {
        return PALETTE.lookup(palette.rgb888,r,g,b,a, "palette");
      },toRGBA:function(c,palette) {
        return palette.rgb888[c];
      }
    },
    "opt3bit":{
      bpp:3, optimalPalette:true,name:"Optimal 3 bit",
      fromRGBA:function(r,g,b,a,palette) {
        return PALETTE.lookup(palette.rgb888,r,g,b,a, "palette");
      },toRGBA:function(c,palette) {
        return palette.rgb888[c];
      }
    },
    "opt4bit":{
      bpp:4, optimalPalette:true,name:"Optimal 4 bit",
      fromRGBA:function(r,g,b,a,palette) {
        return PALETTE.lookup(palette.rgb888,r,g,b,a, "palette");
      },toRGBA:function(c,palette) {
        return palette.rgb888[c];
      }
    }
  };
  // What Espruino uses by default
  const BPP_TO_COLOR_FORMAT = {
    1 : "1bit",
    2 : "2bitbw",
    3 : "3bit",
    4 : "4bitmac",
    8 : "web",
    16 : "rgb565"
  };

  const DIFFUSION_TYPES = {
    "none" : "Nearest color (flat)",
    "random1":"Random small",
    "random2":"Random large",
    "error":"Error Diffusion",
    "errorrandom":"Randomised Error Diffusion",
    "bayer2":"2x2 Bayer",
    "bayer4":"4x4 Bayer",
    "comic":"Comic book",
    "floyd":"Floyd-Steinberg"
  };

  const DITHER = {
    BAYER2 : [
      [ 0, 2 ],
      [ 3, 1 ]
    ],
    BAYER4 : [
      [ 0, 8, 2,10],
      [12, 4,14, 6],
      [ 3,11, 1, 9],
      [15, 7,13, 5]
    ],
    COMICR : [
      [-18,-16,-13,-15,-14,-9,-9,-15],
      [-12,-4,6,-4,-12,-4,6,-4],
      [-6,6,21,6,-6,6,21,6],
      [-11,0,13,0,-11,-4,6,-4],
      [-14,0,13,1,-10,-9,-9,-15],
      [-13,6,21,10,3,6,-4,-16],
      [-16,-4,6,3,10,21,6,-13],
      [-19,-16,-13,-12,-3,6,-4,-16]
    ],
    COMICG : [
      [6,-13,-16,-4,6,3,10,21],
      [-4,-16,-19,-16,-13,-12,-3,6],
      [-9,-15,-18,-16,-13,-15,-14,-9],
      [6,-4,-12,-4,6,-4,-12,-4],
      [21,6,-6,6,21,6,-6,6],
      [6,-4,-11,0,13,0,-11,-4],
      [-9,-15,-14,0,13,1,-10,-9],
      [-4,-16,-13,6,21,10,3,6]
    ],
    COMICB : [
      [-13,-20,-20,-16,3,32,37,10],
      [-16,-20,-20,-19,-12,3,10,-3],
      [-18,-16,-13,-16,-18,-16,-13,-16],
      [-12,3,10,-3,-16,-20,-20,-19],
      [3,32,37,10,-13,-20,-20,-16],
      [10,37,32,4,-12,-13,-16,-12],
      [-2,10,3,-8,-2,10,3,-8],
      [-12,-13,-16,-12,10,37,32,4]
    ],
  };

  /*
  // to make the COMIC dither pattern
  // the idea is this is a pattern of blobs a bit like
  // you might get in a newspaper - hexagonal-ish, and different patterns for R,G and B
  let G = [ // gaussian
    [ 1, 4, 7, 4, 1],
    [ 4,16,26,16, 4],
    [ 7,26,41,26, 7],
    [ 4,16,26,16, 4],
    [ 1, 4, 7, 4, 1],
  ];

  let NR = [], NG = [], NB = [];
  for (var i=0;i<8;i++) {
    NR[i] = [0,0,0,0,0,0,0,0];
    NG[i] = [0,0,0,0,0,0,0,0];
    NB[i] = [0,0,0,0,0,0,0,0];
  }
  function blob(x,y,ox,oy) {
    NR[(y+oy)&7][(x+ox)&7] += G[y][x];
    NG[(y+oy+2)&7][(x+ox+2)&7] += G[y][x];
    NB[(y+oy+10-ox)&7][(x+ox+oy)&7] += G[y][x];
  }
  for (var y=0;y<G.length;y++)
    for (var x=0;x<G.length;x++) {
      blob(x,y,0,0);
      blob(x,y,4,0);
      blob(x,y,0,3);
      blob(x,y,3,4);
    }
  let offset = 20;
  NR = NR.map(R=>R.map(n=>n-offset));
  NG = NG.map(R=>R.map(n=>n-offset));
  NB = NB.map(R=>R.map(n=>n-offset));
  console.log("  COMICR : [\n  "+JSON.stringify(NR).replaceAll("],[","],\n    [").substr(1)+",\n"+
  "  COMICG : [\n  "+JSON.stringify(NG).replaceAll("],[","],\n    [").substr(1)+",\n"+
  "  COMICB : [\n  "+JSON.stringify(NB).replaceAll("],[","],\n    [").substr(1)+",\n");
*/


  function clip(x) {
    if (x<0) return 0;
    if (x>255) return 255;
    return x;
  }

  // compare two RGB888 colors and give a squared distance value
  function compareRGBA8888(ca,cb) {
    var ar=(ca>>16)&255;
    var ag=(ca>>8)&255;
    var ab=ca&255;
    var aa=(ca>>24)&255;
    var br=(cb>>16)&255;
    var bg=(cb>>8)&255;
    var bb=cb&255;
    var ba=(cb>>24)&255;

    var dr = ar-br;
    var dg = ag-bg;
    var db = ab-bb;
    var da = aa-ba;
    return dr*dr + dg*dg + db*db + da*da;
  }

  // blend ca to cb, 0<=amt<=1
  function blendRGBA8888(ca,cb, amt) {
    var aa=(ca>>24)&255;
    var ar=(ca>>16)&255;
    var ag=(ca>>8)&255;
    var ab=ca&255;
    var ba=(cb>>24)&255;
    var br=(cb>>16)&255;
    var bg=(cb>>8)&255;
    var bb=cb&255;

    var namt = 1-amt;
    var da = Math.round(aa*namt + ba*amt);
    var dr = Math.round(ar*namt + br*amt);
    var dg = Math.round(ag*namt + bg*amt);
    var db = Math.round(ab*namt + bb*amt);
    return (da<<24)|(dr<<16)|(dg<<8)|db;
  }

  /*
  rgba = Uint8Array(width*height*4)
  See 'getOptions' for possible options
  */
  function RGBAtoString(rgba, options) {
    options = options||{};
    if (!rgba) throw new Error("No dataIn specified");
    if (!options.width) throw new Error("No Width specified");
    if (!options.height) throw new Error("No Height specified");

    if (options.scale && options.scale!=1)
      rgba = rescale(rgba, options);
    if (options.autoCrop || options.autoCropCenter)
      rgba = autoCrop(rgba, options);


    if ("string"!=typeof options.diffusion)
      options.diffusion = "none";
    options.compression = options.compression || false;
    options.brightness = options.brightness | 0;
    options.contrast = options.contrast | 0;
    options.mode = options.mode || "1bit";
    options.output = options.output || "object";
    options.inverted = options.inverted || false;
    options.transparent = !!options.transparent;
    var contrast =  (259 * (options.contrast + 255)) / (255 * (259 - options.contrast));

    var transparentCol = undefined;
    if (options.transparent) {
      if (options.mode=="4bit")
        transparentCol=0;
      if (options.mode=="vga" || options.mode=="web")
        transparentCol=TRANSPARENT_8BIT;
    }
    var fmt = FORMATS[options.mode];
    if (fmt===undefined) throw new Error("Unknown image mode");
    var bpp = fmt.bpp;
    var bitData = new Uint8Array(((options.width*options.height)*bpp+7)/8);
    var palette;
    if (fmt.optimalPalette) {
      let pixels = readImage(FORMATS["rgb565"]);
      palette = generatePalette(pixels, options);
      if (palette.transparentCol !== undefined)
        transparentCol = palette.transparentCol;
    }

    function readImage(fmt) {
      var pixels = new Int32Array(options.width*options.height);
      var n = 0;
      var er=0,eg=0,eb=0;
      // Floyd-Steinberg error diffusion buffers (current row / next row)
      var fs = (options.diffusion=="floyd");
      var fsErrRRow, fsErrGRow, fsErrBRow, fsErrRNext, fsErrGNext, fsErrBNext;
      if (fs) {
        fsErrRRow = new Float32Array(options.width+2);
        fsErrGRow = new Float32Array(options.width+2);
        fsErrBRow = new Float32Array(options.width+2);
        fsErrRNext = new Float32Array(options.width+2);
        fsErrGNext = new Float32Array(options.width+2);
        fsErrBNext = new Float32Array(options.width+2);
      }
      for (var y=0; y<options.height; y++) {
        if (fs) {
          // move next row errors into current row, clear next row
            var t;
            t = fsErrRRow; fsErrRRow = fsErrRNext; fsErrRNext = t; fsErrRNext.fill(0);
            t = fsErrGRow; fsErrGRow = fsErrGNext; fsErrGNext = t; fsErrGNext.fill(0);
            t = fsErrBRow; fsErrBRow = fsErrBNext; fsErrBNext = t; fsErrBNext.fill(0);
        }
        for (var x=0; x<options.width; x++) {
          var r = rgba[n*4];
          var g = rgba[n*4+1];
          var b = rgba[n*4+2];
          var a = rgba[n*4+3];
          if (options.alphaToColor) {
            r = g = b = a;
          }

          if (options.diffusion == "random1" ||
              options.diffusion == "errorrandom") {
            er += Math.random()*48 - 24;
            eg += Math.random()*48 - 24;
            eb += Math.random()*48 - 24;
          } else if (options.diffusion == "random2") {
            er += Math.random()*128 - 64;
            eg += Math.random()*128 - 64;
            eb += Math.random()*128 - 64;
          } else if (options.diffusion == "bayer2") {
            let th = DITHER.BAYER2[x&1][y&1]*64 - 96;
            er += th;
            eg += th;
            eb += th;
          } else if (options.diffusion == "bayer4") {
            let th = DITHER.BAYER4[x&3][y&3]*16 - 96;
            er += th;
            eg += th;
            eb += th;
          } if (options.diffusion == "comic") {
            er += DITHER.COMICR[x&7][y&7]*3 + Math.random()*24 - 12;
            eg += DITHER.COMICG[x&7][y&7]*3 + Math.random()*24 - 12;
            eb += DITHER.COMICB[x&7][y&7]*3 + Math.random()*24 - 12;
          }
          if (options.inverted) {
            r=255-r;
            g=255-g;
            b=255-b;
          }
          if (fs) {
            // Base adjust first, then add accumulated FS error from buffers
            r = ((r + options.brightness - 128)*contrast) + 128;
            g = ((g + options.brightness - 128)*contrast) + 128;
            b = ((b + options.brightness - 128)*contrast) + 128;
            var ix = x+1; // offset by 1 so we always have space at edges
            r = clip(r + fsErrRRow[ix]);
            g = clip(g + fsErrGRow[ix]);
            b = clip(b + fsErrBRow[ix]);
          } else {
            r = clip(((r + options.brightness - 128)*contrast) + 128 + er);
            g = clip(((g + options.brightness - 128)*contrast) + 128 + eg);
            b = clip(((b + options.brightness - 128)*contrast) + 128 + eb);
          }
          var isTransparent = a<128;

          var c = fmt.fromRGBA(r,g,b,a,palette);
          if (isTransparent && options.transparent && transparentCol===undefined) {
            c = -1;
            a = 0;
          }
          pixels[n] = c;
          // error diffusion
          var cr = fmt.toRGBA(c,palette);
          // var oa = cr>>>24; - no error diffusion on alpha channel
          var or = (cr>>16)&255;
          var og = (cr>>8)&255;
          var ob = cr&255;
          if (fs && a>128) {
            // Floyd-Steinberg distribution
            var eR = r-or;
            var eG = g-og;
            var eB = b-ob;
            // indexes with +1 offset
            var ix = x+1;
            // current row, pixel to the right
            fsErrRRow[ix+1] += eR * (7/16);
            fsErrGRow[ix+1] += eG * (7/16);
            fsErrBRow[ix+1] += eB * (7/16);
            // next row (below left, below, below right)
            fsErrRNext[ix-1] += eR * (3/16);
            fsErrGNext[ix-1] += eG * (3/16);
            fsErrBNext[ix-1] += eB * (3/16);
            fsErrRNext[ix]   += eR * (5/16);
            fsErrGNext[ix]   += eG * (5/16);
            fsErrBNext[ix]   += eB * (5/16);
            fsErrRNext[ix+1] += eR * (1/16);
            fsErrGNext[ix+1] += eG * (1/16);
            fsErrBNext[ix+1] += eB * (1/16);
            // no per-pixel carryover (er/eg/eb) used in FS mode
            er = eg = eb = 0;
          } else if (!fs && options.diffusion.startsWith("error") && a>128) {
            er = r-or;
            eg = g-og;
            eb = b-ob;
          } else {
            er = 0;
            eg = 0;
            eb = 0;
          }

          n++;
        }
      }
      return pixels;
    }
    function writeImage(pixels) {
      var n = 0;
      for (var y=0; y<options.height; y++) {
        for (var x=0; x<options.width; x++) {
          var c = pixels[n];
          // Write image data
          if (bpp==1) bitData[n>>3] |= c ? 128>>(n&7) : 0;
          else if (bpp==2) bitData[n>>2] |= c<<((3-(n&3))*2);
          else if (bpp==3) {
            c = c&7;
            var bitaddr = n*3;
            var a = bitaddr>>3;
            var shift = bitaddr&7;
            bitData[a] |= (c<<(8-shift)) >> 3;
            bitData[a+1] |= (c<<(16-shift)) >> 3;
          } else if (bpp==4) bitData[n>>1] |= c<<((n&1)?0:4);
          else if (bpp==8) bitData[n] = c;
          else if (bpp==16) {
            bitData[n<<1] = c>>8;
            bitData[1+(n<<1)] = c&0xFF;
          } else throw new Error("Unhandled BPP");
          // Write preview
          var cr = fmt.toRGBA(c, palette);
          if (c===transparentCol)
            cr = ((((x>>2)^(y>>2))&1)?0xCCCCCC:0x555555); // pixel pattern
          //var oa = cr>>>24; - ignore alpha
          var or = (cr>>16)&255;
          var og = (cr>>8)&255;
          var ob = cr&255;
          if (options.rgbaOut) {
            options.rgbaOut[n*4] = or;
            options.rgbaOut[n*4+1]= og;
            options.rgbaOut[n*4+2]= ob;
            options.rgbaOut[n*4+3]=255;
          }
          n++;
        }
      }
    }

    let pixels = readImage(fmt);
    if (options.transparent && transparentCol===undefined && bpp<=16) {
      // we have no fixed transparent colour - pick one that's unused
      var colors = new Uint32Array(1<<bpp);
      // how many colours?
      for (let i=0;i<pixels.length;i++)
        if (pixels[i]>=0)
          colors[pixels[i]]++;
      // find an empty one
      for (let i=0;i<colors.length;i++)
        if (colors[i]==0) {
          transparentCol = i;
          break;
        }
      if (transparentCol===undefined) {
        console.log("No unused colour found - using 0 for transparency");
        for (let i=0;i<pixels.length;i++)
          if (pixels[i]<0)
            pixels[i]=0;
      } else {
        for (let i=0;i<pixels.length;i++)
          if (pixels[i]<0)
            pixels[i]=transparentCol;
      }
    }
    writeImage(pixels);

    var strPrefix,strPostfix;
    if ((options.output=="string") || (options.output=="gfxstring") || (options.output=="raw")) {
      var transparent = transparentCol!==undefined;
      var header = [];
      header.push(options.width);
      header.push(options.height);
      header.push(bpp + (transparent?128:0) + (palette?64:0));
      if (transparent) header.push(transparentCol);
      if (palette) {
        var p = palette.rgb565;
        for (var i=0;i<p.length;i++) {
          header.push(p[i]&255);
          header.push(p[i]>>8);
        }
      }
      var imgData = new Uint8Array(header.length + bitData.length);
      imgData.set(header, 0);
      imgData.set(bitData, header.length);
      bitData = imgData;
    }
    if (options.compression) {
      bitData = heatshrink.compress(bitData);
      strPrefix = 'require("heatshrink").decompress(';
      strPostfix = ')';
    } else {
      strPrefix = '';
      strPostfix = '';
    }
    var str = "";
    for (let n=0; n<bitData.length; n++)
      str += String.fromCharCode(bitData[n]);
    var imgstr;
    if (options.output=="raw") {
      imgstr = str;
    } else if (options.output=="object") {
      imgstr = "{\n";
      imgstr += "  width : "+options.width+", height : "+options.height+", bpp : "+bpp+",\n";
      if (transparentCol!==undefined) imgstr += "  transparent : "+transparentCol+",\n";
      if (palette!==undefined) imgstr += "  palette : new Uint16Array(["+palette.rgb565.toString()+"]),\n";
      imgstr += '  buffer : '+strPrefix+'atob("'+btoa(str)+'")'+strPostfix+'\n';
      imgstr += "}";
    } else if (options.output=="string") {
      imgstr = strPrefix+'atob("'+btoa(str)+'")'+strPostfix;
    } else if (options.output=="gfxstring") {
      imgstr = strPrefix+'atob("'+btoa("\0"+str)+'")'+strPostfix;
    } else {
      throw new Error("Unknown output style");
    }
    return imgstr;
  }

  /* Add a checkerboard background to any transparent areas and
  make everything nontransparent. expects width/height in optuons */
  function RGBAtoCheckerboard(rgba, options) {
    var n=0;
    for (var y=0; y<options.height; y++) {
      for (var x=0; x<options.width; x++) {
        var na = rgba[n*4+3]/255;
        var a = 1-na;
        var chequerboard = ((((x>>2)^(y>>2))&1)?0xCC:0x55);
        rgba[n*4]   = rgba[n*4]*na + chequerboard*a;
        rgba[n*4+1] = rgba[n*4+1]*na + chequerboard*a;
        rgba[n*4+2] = rgba[n*4+2]*na + chequerboard*a;
        rgba[n*4+3] = 255;
        n++;
      }
    }
  }

  /* Given an image, try and work out a palette.
    Runs off a 32 bit array of pixels (actually just 1 bits) */
  function generatePalette(pixels, options) {
    var fmt = FORMATS[options.mode];
    var bpp = fmt.bpp;
    var bppRange = 1<<bpp;
    var colorUses = {};
    // count pixel colors - max 65535 so it's not going to kill us
    for (let n=0;n<pixels.length;n++) {
      var px = pixels[n];
      if (!colorUses[px]) colorUses[px]=1;
      else colorUses[px]++;
    }
    // now get as array
    var pixelCols = Object.keys(colorUses);
    var maxUses = 0;
    pixelCols.forEach(col => maxUses=Math.max(maxUses, colorUses[col]));
    // work out scores
    var scores = {};
    pixelCols.forEach(col => {
      // for each color...
      var uses = colorUses[col];
      // work out how close it is to other
      // colors that have more pixels used
      var nearestDiff = 0xFFFFFF;
      pixelCols.forEach(c => {
        if (c==col || colorUses[c]<=uses) return;
        var diff = compareRGBA8888(col,c);
        if (diff<nearestDiff)
          nearestDiff = diff;
      });
      // now our heuristic!
      // the number of pixels we have *plus* how far we are
      // away from an existing color times some number
      scores[col] = uses + (nearestDiff/128);
    });
    // sort based on score...
    pixelCols.sort((a,b)=>scores[b]-scores[a]);
    pixelCols = pixelCols.slice(0,31); // for sanity
    //console.log("All Colors",pixelCols.map(c=>({col:0|c, cnt:colorUses[c], score:scores[c], rgb:(FORMATS["rgb565"].toRGBA(c)&0xFFFFFF).toString(16).padStart(6,"0")})));
    // crop to how many palette items we're allowed
    pixelCols = pixelCols.slice(0,bppRange);

    //if the image has fewer colors than our palette we need to fill in the remaining entries
    while (pixelCols.length < bppRange) {
      pixelCols.push(0);
    }
    // debugging...
    //console.log("Palette",pixelCols.map(c=>({col:0|c, cnt:colorUses[c], score:scores[c], rgb:(FORMATS["rgb565"].toRGBA(c)&0xFFFFFF).toString(16).padStart(6,"0")})));
    // Return palettes
    return {
      "rgb565" : new Uint16Array(pixelCols),
      "rgb888" : new Uint32Array(pixelCols.map(c=>c>=0 ? FORMATS["rgb565"].toRGBA(c) : 0)),
      transparentCol : pixelCols.findIndex(c=>c==-1)
    };
  }

  /* Given an image attempt to automatically crop (use top left
  pixel color) */
  function autoCrop(rgba, options) {
    var buf = new Uint32Array(rgba.buffer);
    var stride = options.width;
    var cropCol = buf[0];
    var x1=options.width, x2=0, y1=options.height,y2=2;
    for (let y=0;y<options.height;y++) {
      for (let x=0;x<options.width;x++) {
        if (buf[x+y*stride]!=cropCol) {
          if (x<x1) x1=x;
          if (y<y1) y1=y;
          if (x>x2) x2=x;
          if (y>y2) y2=y;
        }
      }
    }
    // no data! might as well just send it all
    if (x1>x2 || y1>y2) return rgba;
    // if center, try and take the same off each side
    if (options.autoCropCenter) {
      x1 = Math.min(x1, (options.width-1)-x2);
      y1 = Math.min(y1, (options.height-1)-y2);
      x2 = (options.width-1)-x1;
      y2 = (options.height-1)-y1;
    }
    // ok, crop!
    var w = 1+x2-x1;
    var h = 1+y2-y1;
    var dst = new Uint32Array(w*h);
    for (let y=0;y<h;y++)
      for (let x=0;x<w;x++)
        dst[x+y*w] = buf[(x+x1)+(y+y1)*stride];
    options.width = w;
    options.height = h;
    var cropped = new Uint8ClampedArray(dst.buffer);
    if (options.rgbaOut) options.rgbaOut = cropped;
    return cropped;
  }

  /* attempt to rescale the image - use bilinear interpolation */
  function rescale(rgba, options) {
    let scale = options.scale;
    let dstw = Math.round(options.width*scale);
    let dsth = Math.round(options.height*scale);
    let src = new Uint32Array(rgba.buffer);
    let srcw = options.width;
    let dst = new Uint32Array(dstw*dsth);
    for (let y=0;y<dsth;y++)
      for (let x=0;x<dstw;x++) {
        let oldx = x / scale;
        let oldy = y / scale;
        let ix = Math.floor(oldx), ax=oldx-ix;
        let iy = Math.floor(oldy), ay=oldy-iy;
        let ca = blendRGBA8888(src[ix+(srcw*iy)], src[ix+1+(srcw*iy)], ax);
        let cb = blendRGBA8888(src[ix+(srcw*(iy+1))], src[ix+1+(srcw*(iy+1))], ax);
        dst[x+y*dstw] = blendRGBA8888(ca,cb,ay);
      }
    options.width = dstw;
    options.height = dsth;
    let cropped = new Uint8ClampedArray(dst.buffer);
    if (options.rgbaOut) options.rgbaOut = cropped;
    return cropped;
  }

  /* RGBAtoString options, PLUS:

  updateCanvas: update canvas with the quantized image
  */
  function canvastoString(canvas, options) {
    options = options||{};
    options.width = canvas.width;
    options.height = canvas.height;
    var ctx = canvas.getContext("2d");
    var imageData = ctx.getImageData(0, 0, options.width, options.height);
    var rgba = imageData.data;
    if (options.updateCanvas)
      options.rgbaOut = rgba;
    var str = RGBAtoString(rgba, options);
    if (options.updateCanvas)
      ctx.putImageData(imageData,0,0);
    return str;
  }

  /* RGBAtoString options, PLUS:

  */
  function imagetoString(img, options) {
    options = options||{};
    var canvas = document.createElement('canvas');
    canvas.width = img.width;
    canvas.height = img.height;
    var ctx = canvas.getContext("2d");
    ctx.drawImage(img,0,0);
    return canvastoString(canvas, options);
  }

  function getOptions() {
    return {
      width : "int",
      height : "int",
      scale : "float", // if specified, scale image size by some amount
      rgbaOut : "Uint8Array", //  to store quantised data
      diffusion : DIFFUSION_TYPES,
      compression : "bool",
      transparent : "bool",
      brightness : "int", // 0 default +/- 127
      contrast : "int", // 0 default, +/- 255
      mode : Object.keys(FORMATS),
      output : {
        "string" : { title : "Image String", userFacing : true, default : true},
        "gfxstring" : { title : "Image as Text (for drawString)", userFacing : true},
        "object" : { title : "Image Object", userFacing : true},
        "raw" : { title : "Raw data", userFacing : false}
      },
      inverted : "bool",
      alphaToColor : "bool",
      autoCrop : "bool", // whether to crop the image's borders or not
      autoCropCenter : "bool"
    }
  }

  /* Decode an Espruino image string into a URL, return undefined if it's not valid.
  options =  {
    transparent : bool // should the image be transparent, or just chequered where transparent?
  } */
  function stringToImageURL(data, options) {
    options = options||{};
    var p = 0;
    var width = 0|data.charCodeAt(p++);
    var height = 0|data.charCodeAt(p++);
    var bpp = 0|data.charCodeAt(p++);
    var transparentCol = -1;
    if (bpp&128) {
      bpp &= 127;
      transparentCol = 0|data.charCodeAt(p++);
    }
    // TODO: Palettes!
    var mode = BPP_TO_COLOR_FORMAT[bpp];
    if (!mode) {
      console.log("Couldn't guess format");
      return undefined; // unknown format
    }
    var fmt = FORMATS[mode];
    var bitmapSize = ((width*height*bpp)+7) >> 3;
    // If it's the wrong length, it's not a bitmap or it's corrupt!
    if (data.length != p+bitmapSize)
      return undefined;
    // Ok, build the picture
    var canvas = document.createElement('canvas');
    canvas.width = width;
    canvas.height = height;
    var ctx = canvas.getContext("2d");
    var imageData = ctx.getImageData(0, 0, width, height);
    var rgba = imageData.data;
    var no = 0;
    var nibits = 0;
    var nidata = 0;
    for (var i=0;i<width*height;i++) {
      while (nibits<bpp) {
        nidata = (nidata<<8) | data.charCodeAt(p++);
        nibits += 8;
      }
      var c = (nidata>>(nibits-bpp)) & ((1<<bpp)-1);
      nibits -= bpp;
      var cr = fmt.toRGBA(c);
      if (c == transparentCol)
        cr = cr & 0xFFFFFF;
      rgba[no++] = (cr>>16)&255; // r
      rgba[no++] = (cr>>8)&255; // g
      rgba[no++] = cr&255; // b
      rgba[no++] = cr>>>24; // a
    }
    if (!options.transparent)
      RGBAtoCheckerboard(rgba, {width:width, height:height});
    ctx.putImageData(imageData,0,0);
    return canvas.toDataURL();
  }

// decode an Espruino image string into an HTML string, return undefined if it's not valid. See stringToImageURL
  function stringToImageHTML(data, options) {
    var url = stringToImageURL(data, options);
    if (!url) return undefined;
    return '<img src="'+url+'"\\>';
  }

  function setFormatOptions(div) {
    div.innerHTML = Object.keys(FORMATS).map(id => `<option value="${id}">${FORMATS[id].name}</option>`).join("\n");
  }

  function setDiffusionOptions(div) {
    div.innerHTML = Object.keys(DIFFUSION_TYPES).map(id => `<option value="${id}">${DIFFUSION_TYPES[id]}</option>`).join("\n");
  }

  function setOutputOptions(div) {
    var outputStyles = getOptions().output;
    div.innerHTML = Object.keys(outputStyles).filter(id=>outputStyles[id].userFacing).map(id => `<option value="${id}"${outputStyles[id].default?" selected":""}>${outputStyles[id].title}</option>`).join("\n");
  }

  // =======================================================
  return {
    RGBAtoString : RGBAtoString,
    RGBAtoCheckerboard : RGBAtoCheckerboard,
    canvastoString : canvastoString,
    imagetoString : imagetoString,
    getOptions : getOptions,
    getFormats : function() { return FORMATS; },
    setFormatOptions : setFormatOptions,
    setDiffusionOptions : setDiffusionOptions,
    setOutputOptions : setOutputOptions,

    stringToImageHTML : stringToImageHTML,
    stringToImageURL : stringToImageURL,

    setHeatShrink : hs => heatshrink=hs,
  };
}));
/* --------------------------------------------------------------
         js/plugins/emulator.js
   -------------------------------------------------------------- */
/*
Gordon Williams (gw@pur3.co.uk)

If we're running in an iframe, this gets enabled and allows the IDE
to work by passing messages using window.postMessage.

Use embed.js on the client side to link this in.
*/

  var emu;

(function() {
  var callbacks = {};

  var EMULATORS = [
    {
      id : "BANGLEJS2",
      name : "Bangle.js 1",
      description : '240x240 16 bit, 3 buttons',
      link : "https://www.espruino.com/Bangle.js",
      emulatorURL : "/emu/emu_banglejs1.html",
      emulatorWin : "innerWidth=290,innerHeight=268,location=0"
    }, {
      id : "BANGLEJS2",
      name : "Bangle.js 2",
      description : '176x176 3 bit, 1 button, full touchscreen',
      link : "https://www.espruino.com/Bangle.js2",
      emulatorURL : "/emu/emu_banglejs2.html",
      emulatorWin : "innerWidth=290,innerHeight=268,location=0"
    }
  ];

  function post(msg) {
    if (!emu) return;
    msg.for="emu";
    emu.postMessage(msg,"*");
  }

  window.addEventListener('message', function(e) {
    // emu can be undefined when emu window closed OR refreshed.
    var event = e.data;
    //if (typeof event!="object" || event.from!="emu") return;
    console.log("EMU HOST MESSAGE", event);
    switch (event.type) {
      case "init":
        console.log("EMU frame initialised");
        emu.addEventListener('unload', function(e) {
          console.log("EMU frame closed");
          callbacks.disconnected();
          callbacks = {};
        });
        callbacks.open("success");
        break;
      case "tx": {
        var d = event.data;
        var a = new Uint8Array(d.length);
        for (var i=0;i<d.length;i++) a[i]=d.charCodeAt(i);
        callbacks.receive(a.buffer);
        break;
      }
    }
  });

  function chooseDevice(callback) {
    var selected = false;
    var popup = Espruino.Core.App.openPopup({
      id: "sendmethod",
      title: "Upload Destination",
      padding: true,
      contents: Espruino.Core.HTML.domList(EMULATORS.map(e=>({
        title: e.name,
        description : e.description,//+`<a href="${e.link}" target="_blank">more info</a>`,
        callback : function() {
          selected=true;
          popup.close();
          callback(e);
        }
      }))),
      position: "auto",
      onClose: () => {
        if (!selected) callback(undefined);
      }
    });
  }

  var device = {
    "name" : "Emulator",
    "init" : function() {
      Espruino.Core.Config.add("EMULATOR_BANGLEJS", {
        section : "Communications",
        name : "Enable Bangle.js Emulator",
        description : "The size of font used in the Terminal and Code Editor windows",
        type : "boolean",
        defaultValue : true
      });
    },
    "getStatus": function(ignoreSettings) {
      if (!Espruino.Config.EMULATOR_BANGLEJS && !ignoreSettings)
        return {warning:"Disabled in Communications Settings"};
      return true;
    },
    "getPorts": function(callback) {
      var emulatorRequested = window.location.search.substr(1).split("&").includes("emulator");
      if (emulatorRequested)
        Espruino.Config.set("EMULATOR_BANGLEJS", true);
      if (!Espruino.Config.EMULATOR_BANGLEJS)
        return callback([]);
      var port = {
        path:'Emulator',
        description:'Bangle.js Emulator',
        type:"emulator"};
      if (emulatorRequested)
        port.autoconnect = true;
      callback([port], true/*instantPorts*/);
    },
    "open": function(path, openCallback, receiveCallback, disconnectCallback) {
      chooseDevice(function(emuDevice) {
        if (!emuDevice) {
          openCallback(null); // flag error
          return;
        }
        callbacks.open = openCallback;
        callbacks.receive = receiveCallback;
        callbacks.disconnected = function() {
          emu = undefined;
          callbacks = {};
          disconnectCallback();
        }
        var url = window.location.pathname;
        if (url.includes("/"))
          url = url.substr(0,url.lastIndexOf("/"));
        url = window.location.origin + url + emuDevice.emulatorURL;
        emu = window.open(url, "banglewindow", emuDevice.emulatorWin);
        var inited = false;
        emu.addEventListener("load", function() {
          if (!inited) post({type:"init"});
          inited = true;
        }, false);
        window.addEventListener("unload", function() {
          // Ensure emulator window closes on page refresh, so that can be re-init.
          // Not fail-proof if emu windows was manual refreshed, as cant' post and emu window reference changes.
          // So: Emu window will close its-self if window.opener.emu is undefined.
          device.close()
        });
      });
    },
    "write": function(d, callback) {
      post({type:"rx",data:d});
      setTimeout(callback,10);
    },
    "close": function() {
      if (emu) emu.close();
      //callbacks.disconnected(); // called by emu.onunload
      emu = undefined;
    },
  };
  Espruino.Core.Serial.devices.push(device);
})();
/* --------------------------------------------------------------
         js/plugins/keyShortcuts.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Key shortcuts for IDE (the editor/etc often add their own)
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var SHORTCUTS = {
    // Map key combination to an ACTION (below)
    "Ctrl + `" : "TOGGLE_TERMINAL_EDITOR",
    "Ctrl + O" : "icon-openFile",
    "Ctrl + S" : "icon-saveFile",
    "Ctrl + U" : "icon-deploy",
    "Shift + ENTER" : "UPLOAD_SELECTED"
  };
/* ACTIONS:
     Are either implemented in `action` function.
     or `icon-` prefixed actions, eg `icon-deploy` will 'click' the relevant icon
*/

  var BUILTIN_SHORTCUTS = {
    "Ctrl + C / Cmd + C" : "Copy (simple drag and release copies from the Terminal Window)",
    "Ctrl + V / Cmd + V" : "Paste",
    "Alt + ENTER" : "(In REPL) Create new line without executing",

    "Ctrl + F / Cmd-F" : "Start searching (in editor), Fullscreen (in terminal)",
    "Ctrl + G / Cmd-G" : "Find next",
    "Shift + Ctrl + G / Shift + Cmd-G" : "Find previous",
    "Shift + Ctrl + F / Cmd + Option +F" : "Replace",
    "Shift + Ctrl + R / Shift + Cmd + Option + F" : "Replace all",

    "Ctrl + Space" : "Autocomplete",
    "Ctrl + B" : "Beautify (reformat) code",
    "Ctrl + I" : "Find type at cursor",
    "Ctrl + Q" : "Rename variable",
    "Ctrl + ." : "Select all occurrences of a variable",
    "Alt + ." : "Jump to definition (Alt-, to jump back)",
  }

  function init() {
    window.addEventListener("keydown",function(e) {
      var key = (""+e.key).toUpperCase();
      if (e.shiftKey) key = "Shift + "+key;
      if (e.altKey) key = "Alt + "+key;
      if (e.ctrlKey) key = "Ctrl + "+key;
      if (e.metaKey) key = "Cmd + "+key;
      //console.log(key);
      var actionName = SHORTCUTS[key];
      if (actionName!==undefined) {
        e.preventDefault();
        console.log("Key Shortcut "+key+" => "+actionName);
        action(actionName);
      }
    }, { capture : true }); // capture:true makes sure we get called first
  }

  function action(name, getDescription) {
    if (name.startsWith("icon-")) {
      var icon = document.getElementById(name);
      if (icon!==null) {
        if (getDescription) return icon.getAttribute("title");
        else icon.click();
        return;
      }
    }
    switch (name) {
      case "TOGGLE_TERMINAL_EDITOR":
        if(getDescription) return "Toggle between typing in the Terminal or Code Editor";
        if (Espruino.Core.Terminal.hasFocus())
          Espruino.Core.File.focus();
        else
          Espruino.Core.Terminal.focus();
        break;
      case "UPLOAD_SELECTED":
        if(getDescription) return "Upload just the text that is selected in the editor pane";
        if (Espruino.Core.File.isInBlockly()) return;
        var selectedCode = Espruino.Core.EditorJavaScript.getSelectedCode().trim();
        if (selectedCode) {
          Espruino.Core.MenuPortSelector.ensureConnected(function() {
            var old_RESET_BEFORE_SEND = Espruino.Config.RESET_BEFORE_SEND;
            /* No need to tweak SAVE_ON_SEND/etc because by calling
            writeToEspruino we skip the usual pipeline of code
            modifications. But maybe we shouldn't? Could then do
            compiled code/etc on demand too. */
            Espruino.Config.RESET_BEFORE_SEND = false;
            Espruino.Core.CodeWriter.writeToEspruino(selectedCode,function(){
              Espruino.Config.RESET_BEFORE_SEND = old_RESET_BEFORE_SEND;
            });
          });
        }
        break;
      default:
        console.log("keyShortcuts.js: Unknown Action "+JSON.stringify(name));
    }
  }

  function getShortcutDescriptions() {
    var desc = {};
    Object.keys(BUILTIN_SHORTCUTS).forEach(function(key) {
      desc[key] = BUILTIN_SHORTCUTS[key];
    });
    Object.keys(SHORTCUTS).forEach(function(key) {
      desc[key] = action(SHORTCUTS[key], true);
    });
    return desc;
  }

  Espruino.Plugins.KeyShortcuts = {
    init : init,
    action : action, // perform action, or using action("...",true) get the description
    getShortcutDescriptions : getShortcutDescriptions, // get a map of shortcut key -> description
    SHORTCUTS : SHORTCUTS, // public to allow shortcuts to be added easily
  };
}());
/* --------------------------------------------------------------
         js/plugins/terminalLogger.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  An Example Plugin
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  var icon;
  var log = [];
  var logStarted = false;

  function init() {
    Espruino.Core.Config.add("SHOW_TERMINAL_LOGGER_ICON", {
      section : "General",
      name : "Terminal Log Icon",
      description : "Show an icon in the terminal window that allows you to record the contents of the terminal to a file",
      type : "boolean",
      defaultValue : false,
      onChange : function(newValue) { showIcon(newValue); }
    });
    Espruino.Core.Config.add("TERMINAL_LOGGER_SAVE_TO_LOCALSTORAGE", {
      section : "General",
      name : "Terminal Log - save to localstorage",
      description : "Save the terminal log to localstorage?",
      type : "boolean",
      defaultValue : false,
      onChange : function(newValue) { if(newValue && !window.localStorage) { Espruino.Core.Notifications.error("Can't access localStorage!"); Espruino.Config.set("TERMINAL_LOGGER_SAVE_TO_LOCALSTORAGE", false); } }
    });
    
    if (Espruino.Config.TERMINAL_LOGGER_SAVE_TO_LOCALSTORAGE && window.localStorage) {
      let logString = window.localStorage.getItem("TERMINAL_LOGGER_STORAGE");
      if (logString) {
        try {
          let parsed = JSON.parse(logString);
          if(Array.isArray(parsed)){
            log = parsed;
            logStarted = true;
          } else {
            // shouldn't happen, but...
            Espruino.Core.Notifications.error("Log from localStorage is not an array?!");
          }
        } catch (error) {
          Espruino.Core.Notifications.error("Couldn't parse log from localStorage! \n" + error);
          console.error("Couldn't parse log from localStorage!", error, logString);
        }
      }
    }
    showIcon(Espruino.Config.SHOW_TERMINAL_LOGGER_ICON);
    Espruino.addProcessor("terminalNewLine", function(line, callback) {
      if (logStarted) {
        log.push(line);
        if(Espruino.Config.TERMINAL_LOGGER_SAVE_TO_LOCALSTORAGE && window.localStorage) 
          window.localStorage.setItem("TERMINAL_LOGGER_STORAGE", JSON.stringify(log)); 
        icon.setInfo(getLogStateMessage());
      }
      callback(line);
    });
  }

  function getLogStateMessage() {
    if (logStarted) {
      return "&#x1F534; "+log.length;
    } else {
      if (log.length) return "&#x2B55; "+log.length;
      else return "&#x2B55; IDLE";
    }
  }

  function showIcon(show) {
    if (icon!==undefined) {
      icon.remove();
      icon = undefined;
    }
    if (show) {
      icon = Espruino.Core.App.addIcon({
        id: "termLog",
        icon: "log",
        title : "Terminal Logging",
        //order: -90,
        area: {
          name: "terminal",
          position: "top"
        },
        click: showMenu,
        info : getLogStateMessage()
      });
    }
  }

  function showMenu() {
    var buttons = [];
    if (logStarted) {
      buttons.push({ name:"Stop", callback : function() {
        logStarted = false;
        icon.setInfo(getLogStateMessage());
        popup.close();
      }});
    } else {
      buttons.push({ name:"Start", callback : function() {
        logStarted = true;
        icon.setInfo(getLogStateMessage());
        popup.close();
      }});
    }
    if (log.length) {
      buttons.push({ name:"Save", callback : function() {
        Espruino.Core.Utils.fileSaveDialog(log.join("\r\n"), "log.txt", function() {
          icon.setInfo(getLogStateMessage());
          popup.close();
        });
      }});
      buttons.push({ name:"Clear", callback : function() {
        log = [];
        if(Espruino.Config.TERMINAL_LOGGER_SAVE_TO_LOCALSTORAGE && window.localStorage)
          window.localStorage.removeItem("TERMINAL_LOGGER_STORAGE");
        icon.setInfo(getLogStateMessage());
        popup.close();
      }});
    }
    var popup = Espruino.Core.App.openPopup({
      title: "Terminal Logging",
      padding: true,
      contents: `<p>Logging allows you to store the data from the terminal into a file.</p>
<p>You currently have ${log.length} lines recorded</p>`,
      position: "center",
      buttons : buttons
    });
  }

  Espruino.Plugins.TerminalLogger = {
    init : init,
  };
}());
/* --------------------------------------------------------------
         js/plugins/android.js
   -------------------------------------------------------------- */
/**
 Copyright 2014 Gordon Williams (gw@pur3.co.uk)

 This Source Code is subject to the terms of the Mozilla Public
 License, v2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 ------------------------------------------------------------------
  Onscreen buttons for Android Phones/etc
 ------------------------------------------------------------------
**/
"use strict";
(function(){

  function init() {
    if (!/Android/i.test(navigator.userAgent)) return; // only run on Android

    Espruino.Core.App.addIcon({
      id: "uparrow",
      icon: "upkey",
      title : "Up Arrow",
      area: {
        name: "terminal",
        position: "bottom"
      },
      click: function(){
        Espruino.Core.Terminal.typeCharacters(String.fromCharCode(27,91,65));
        Espruino.Core.Terminal.focus(); // don't lose the onscreen keyboard
      }
    });
    Espruino.Core.App.addIcon({
      id: "downarrow",
      icon: "downkey",
      title : "Down Arrow",
      area: {
        name: "terminal",
        position: "bottom"
      },
      click: function(){
        Espruino.Core.Terminal.typeCharacters(String.fromCharCode(27,91,66));
        Espruino.Core.Terminal.focus(); // don't lose the onscreen keyboard
      }
    });
    Espruino.Core.App.addIcon({
      id: "tabkey",
      icon: "tabkey",
      title : "Tab Key",
      area: {
        name: "terminal",
        position: "bottom"
      },
      click: function(){
        Espruino.Core.Terminal.typeCharacters("\x09");
        Espruino.Core.Terminal.focus(); // don't lose the onscreen keyboard
      }
    });
  }

  Espruino.Plugins.Android = {
    init : init,
  };
}());