/*! * https://github.com/es-shims/es5-shim * @license es5-shim Copyright 2009-2014 by contributors, MIT License * see https://github.com/es-shims/es5-shim/blob/master/LICENSE */ // vim: ts=4 sts=4 sw=4 expandtab // UMD (Universal Module Definition) // see https://github.com/umdjs/umd/blob/master/returnExports.js // Add semicolon to prevent IIFE from being passed as argument to concatenated code. ;(function (root, factory) { 'use strict'; /*global define, exports, module */ if (typeof define === 'function' && define.amd) { // AMD. Register as an anonymous module. define(factory); } else if (typeof exports === 'object') { // Node. Does not work with strict CommonJS, but // only CommonJS-like enviroments that support module.exports, // like Node. module.exports = factory(); } else { // Browser globals (root is window) root.returnExports = factory(); } }(this, function () { /** * Brings an environment as close to ECMAScript 5 compliance * as is possible with the facilities of erstwhile engines. * * Annotated ES5: http://es5.github.com/ (specific links below) * ES5 Spec: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf * Required reading: http://javascriptweblog.wordpress.com/2011/12/05/extending-javascript-natives/ */ // Shortcut to an often accessed properties, in order to avoid multiple // dereference that costs universally. var ArrayPrototype = Array.prototype; var ObjectPrototype = Object.prototype; var FunctionPrototype = Function.prototype; var StringPrototype = String.prototype; var NumberPrototype = Number.prototype; var array_slice = ArrayPrototype.slice; var array_splice = ArrayPrototype.splice; var array_push = ArrayPrototype.push; var array_unshift = ArrayPrototype.unshift; var call = FunctionPrototype.call; // Having a toString local variable name breaks in Opera so use to_string. var to_string = ObjectPrototype.toString; var isFunction = function (val) { return to_string.call(val) === '[object Function]'; }; var isRegex = function (val) { return to_string.call(val) === '[object RegExp]'; }; var isArray = function isArray(obj) { return to_string.call(obj) === '[object Array]'; }; var isString = function isString(obj) { return to_string.call(obj) === '[object String]'; }; var isArguments = function isArguments(value) { var str = to_string.call(value); var isArgs = str === '[object Arguments]'; if (!isArgs) { isArgs = !isArray(value) && value !== null && typeof value === 'object' && typeof value.length === 'number' && value.length >= 0 && isFunction(value.callee); } return isArgs; }; var supportsDescriptors = Object.defineProperty && (function () { try { Object.defineProperty({}, 'x', {}); return true; } catch (e) { /* this is ES3 */ return false; } }()); // Define configurable, writable and non-enumerable props // if they don't exist. var defineProperty; if (supportsDescriptors) { defineProperty = function (object, name, method, forceAssign) { if (!forceAssign && (name in object)) { return; } Object.defineProperty(object, name, { configurable: true, enumerable: false, writable: true, value: method }); }; } else { defineProperty = function (object, name, method, forceAssign) { if (!forceAssign && (name in object)) { return; } object[name] = method; }; } var defineProperties = function (object, map, forceAssign) { for (var name in map) { if (ObjectPrototype.hasOwnProperty.call(map, name)) { defineProperty(object, name, map[name], forceAssign); } } }; // // Util // ====== // // ES5 9.4 // http://es5.github.com/#x9.4 // http://jsperf.com/to-integer function toInteger(num) { var n = +num; if (n !== n) { // isNaN n = 0; } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) { n = (n > 0 || -1) * Math.floor(Math.abs(n)); } return n; } function isPrimitive(input) { var type = typeof input; return input === null || type === 'undefined' || type === 'boolean' || type === 'number' || type === 'string'; } function toPrimitive(input) { var val, valueOf, toStr; if (isPrimitive(input)) { return input; } valueOf = input.valueOf; if (isFunction(valueOf)) { val = valueOf.call(input); if (isPrimitive(val)) { return val; } } toStr = input.toString; if (isFunction(toStr)) { val = toStr.call(input); if (isPrimitive(val)) { return val; } } throw new TypeError(); } var ES = { // ES5 9.9 // http://es5.github.com/#x9.9 ToObject: function (o) { /*jshint eqnull: true */ if (o == null) { // this matches both null and undefined throw new TypeError("can't convert " + o + ' to object'); } return Object(o); }, ToUint32: function ToUint32(x) { return x >>> 0; } }; // // Function // ======== // // ES-5 15.3.4.5 // http://es5.github.com/#x15.3.4.5 var Empty = function Empty() {}; defineProperties(FunctionPrototype, { bind: function bind(that) { // .length is 1 // 1. Let Target be the this value. var target = this; // 2. If IsCallable(Target) is false, throw a TypeError exception. if (!isFunction(target)) { throw new TypeError('Function.prototype.bind called on incompatible ' + target); } // 3. Let A be a new (possibly empty) internal list of all of the // argument values provided after thisArg (arg1, arg2 etc), in order. // XXX slicedArgs will stand in for "A" if used var args = array_slice.call(arguments, 1); // for normal call // 4. Let F be a new native ECMAScript object. // 11. Set the [[Prototype]] internal property of F to the standard // built-in Function prototype object as specified in 15.3.3.1. // 12. Set the [[Call]] internal property of F as described in // 15.3.4.5.1. // 13. Set the [[Construct]] internal property of F as described in // 15.3.4.5.2. // 14. Set the [[HasInstance]] internal property of F as described in // 15.3.4.5.3. var bound; var binder = function () { if (this instanceof bound) { // 15.3.4.5.2 [[Construct]] // When the [[Construct]] internal method of a function object, // F that was created using the bind function is called with a // list of arguments ExtraArgs, the following steps are taken: // 1. Let target be the value of F's [[TargetFunction]] // internal property. // 2. If target has no [[Construct]] internal method, a // TypeError exception is thrown. // 3. Let boundArgs be the value of F's [[BoundArgs]] internal // property. // 4. Let args be a new list containing the same values as the // list boundArgs in the same order followed by the same // values as the list ExtraArgs in the same order. // 5. Return the result of calling the [[Construct]] internal // method of target providing args as the arguments. var result = target.apply( this, args.concat(array_slice.call(arguments)) ); if (Object(result) === result) { return result; } return this; } else { // 15.3.4.5.1 [[Call]] // When the [[Call]] internal method of a function object, F, // which was created using the bind function is called with a // this value and a list of arguments ExtraArgs, the following // steps are taken: // 1. Let boundArgs be the value of F's [[BoundArgs]] internal // property. // 2. Let boundThis be the value of F's [[BoundThis]] internal // property. // 3. Let target be the value of F's [[TargetFunction]] internal // property. // 4. Let args be a new list containing the same values as the // list boundArgs in the same order followed by the same // values as the list ExtraArgs in the same order. // 5. Return the result of calling the [[Call]] internal method // of target providing boundThis as the this value and // providing args as the arguments. // equiv: target.call(this, ...boundArgs, ...args) return target.apply( that, args.concat(array_slice.call(arguments)) ); } }; // 15. If the [[Class]] internal property of Target is "Function", then // a. Let L be the length property of Target minus the length of A. // b. Set the length own property of F to either 0 or L, whichever is // larger. // 16. Else set the length own property of F to 0. var boundLength = Math.max(0, target.length - args.length); // 17. Set the attributes of the length own property of F to the values // specified in 15.3.5.1. var boundArgs = []; for (var i = 0; i < boundLength; i++) { boundArgs.push('$' + i); } // XXX Build a dynamic function with desired amount of arguments is the only // way to set the length property of a function. // In environments where Content Security Policies enabled (Chrome extensions, // for ex.) all use of eval or Function costructor throws an exception. // However in all of these environments Function.prototype.bind exists // and so this code will never be executed. bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this, arguments); }')(binder); if (target.prototype) { Empty.prototype = target.prototype; bound.prototype = new Empty(); // Clean up dangling references. Empty.prototype = null; } // TODO // 18. Set the [[Extensible]] internal property of F to true. // TODO // 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3). // 20. Call the [[DefineOwnProperty]] internal method of F with // arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]: // thrower, [[Enumerable]]: false, [[Configurable]]: false}, and // false. // 21. Call the [[DefineOwnProperty]] internal method of F with // arguments "arguments", PropertyDescriptor {[[Get]]: thrower, // [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false}, // and false. // TODO // NOTE Function objects created using Function.prototype.bind do not // have a prototype property or the [[Code]], [[FormalParameters]], and // [[Scope]] internal properties. // XXX can't delete prototype in pure-js. // 22. Return F. return bound; } }); // _Please note: Shortcuts are defined after `Function.prototype.bind` as we // us it in defining shortcuts. var owns = call.bind(ObjectPrototype.hasOwnProperty); // // Array // ===== // // ES5 15.4.4.12 // http://es5.github.com/#x15.4.4.12 var spliceNoopReturnsEmptyArray = (function () { var a = [1, 2]; var result = a.splice(); return a.length === 2 && isArray(result) && result.length === 0; }()); defineProperties(ArrayPrototype, { // Safari 5.0 bug where .splice() returns undefined splice: function splice(start, deleteCount) { if (arguments.length === 0) { return []; } else { return array_splice.apply(this, arguments); } } }, spliceNoopReturnsEmptyArray); var spliceWorksWithEmptyObject = (function () { var obj = {}; ArrayPrototype.splice.call(obj, 0, 0, 1); return obj.length === 1; }()); defineProperties(ArrayPrototype, { splice: function splice(start, deleteCount) { if (arguments.length === 0) { return []; } var args = arguments; this.length = Math.max(toInteger(this.length), 0); if (arguments.length > 0 && typeof deleteCount !== 'number') { args = array_slice.call(arguments); if (args.length < 2) { args.push(this.length - start); } else { args[1] = toInteger(deleteCount); } } return array_splice.apply(this, args); } }, !spliceWorksWithEmptyObject); // ES5 15.4.4.12 // http://es5.github.com/#x15.4.4.13 // Return len+argCount. // [bugfix, ielt8] // IE < 8 bug: [].unshift(0) === undefined but should be "1" var hasUnshiftReturnValueBug = [].unshift(0) !== 1; defineProperties(ArrayPrototype, { unshift: function () { array_unshift.apply(this, arguments); return this.length; } }, hasUnshiftReturnValueBug); // ES5 15.4.3.2 // http://es5.github.com/#x15.4.3.2 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray defineProperties(Array, { isArray: isArray }); // The IsCallable() check in the Array functions // has been replaced with a strict check on the // internal class of the object to trap cases where // the provided function was actually a regular // expression literal, which in V8 and // JavaScriptCore is a typeof "function". Only in // V8 are regular expression literals permitted as // reduce parameters, so it is desirable in the // general case for the shim to match the more // strict and common behavior of rejecting regular // expressions. // ES5 15.4.4.18 // http://es5.github.com/#x15.4.4.18 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/forEach // Check failure of by-index access of string characters (IE < 9) // and failure of `0 in boxedString` (Rhino) var boxedString = Object('a'); var splitString = boxedString[0] !== 'a' || !(0 in boxedString); var properlyBoxesContext = function properlyBoxed(method) { // Check node 0.6.21 bug where third parameter is not boxed var properlyBoxesNonStrict = true; var properlyBoxesStrict = true; if (method) { method.call('foo', function (_, __, context) { if (typeof context !== 'object') { properlyBoxesNonStrict = false; } }); method.call([1], function () { 'use strict'; properlyBoxesStrict = typeof this === 'string'; }, 'x'); } return !!method && properlyBoxesNonStrict && properlyBoxesStrict; }; defineProperties(ArrayPrototype, { forEach: function forEach(fun /*, thisp*/) { var object = ES.ToObject(this), self = splitString && isString(this) ? this.split('') : object, thisp = arguments[1], i = -1, length = self.length >>> 0; // If no callback function or if callback is not a callable function if (!isFunction(fun)) { throw new TypeError(); // TODO message } while (++i < length) { if (i in self) { // Invoke the callback function with call, passing arguments: // context, property value, property key, thisArg object // context fun.call(thisp, self[i], i, object); } } } }, !properlyBoxesContext(ArrayPrototype.forEach)); // ES5 15.4.4.19 // http://es5.github.com/#x15.4.4.19 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map defineProperties(ArrayPrototype, { map: function map(fun /*, thisp*/) { var object = ES.ToObject(this), self = splitString && isString(this) ? this.split('') : object, length = self.length >>> 0, result = Array(length), thisp = arguments[1]; // If no callback function or if callback is not a callable function if (!isFunction(fun)) { throw new TypeError(fun + ' is not a function'); } for (var i = 0; i < length; i++) { if (i in self) { result[i] = fun.call(thisp, self[i], i, object); } } return result; } }, !properlyBoxesContext(ArrayPrototype.map)); // ES5 15.4.4.20 // http://es5.github.com/#x15.4.4.20 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/filter defineProperties(ArrayPrototype, { filter: function filter(fun /*, thisp */) { var object = ES.ToObject(this), self = splitString && isString(this) ? this.split('') : object, length = self.length >>> 0, result = [], value, thisp = arguments[1]; // If no callback function or if callback is not a callable function if (!isFunction(fun)) { throw new TypeError(fun + ' is not a function'); } for (var i = 0; i < length; i++) { if (i in self) { value = self[i]; if (fun.call(thisp, value, i, object)) { result.push(value); } } } return result; } }, !properlyBoxesContext(ArrayPrototype.filter)); // ES5 15.4.4.16 // http://es5.github.com/#x15.4.4.16 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every defineProperties(ArrayPrototype, { every: function every(fun /*, thisp */) { var object = ES.ToObject(this), self = splitString && isString(this) ? this.split('') : object, length = self.length >>> 0, thisp = arguments[1]; // If no callback function or if callback is not a callable function if (!isFunction(fun)) { throw new TypeError(fun + ' is not a function'); } for (var i = 0; i < length; i++) { if (i in self && !fun.call(thisp, self[i], i, object)) { return false; } } return true; } }, !properlyBoxesContext(ArrayPrototype.every)); // ES5 15.4.4.17 // http://es5.github.com/#x15.4.4.17 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some defineProperties(ArrayPrototype, { some: function some(fun /*, thisp */) { var object = ES.ToObject(this), self = splitString && isString(this) ? this.split('') : object, length = self.length >>> 0, thisp = arguments[1]; // If no callback function or if callback is not a callable function if (!isFunction(fun)) { throw new TypeError(fun + ' is not a function'); } for (var i = 0; i < length; i++) { if (i in self && fun.call(thisp, self[i], i, object)) { return true; } } return false; } }, !properlyBoxesContext(ArrayPrototype.some)); // ES5 15.4.4.21 // http://es5.github.com/#x15.4.4.21 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce var reduceCoercesToObject = false; if (ArrayPrototype.reduce) { reduceCoercesToObject = typeof ArrayPrototype.reduce.call('es5', function (_, __, ___, list) { return list; }) === 'object'; } defineProperties(ArrayPrototype, { reduce: function reduce(fun /*, initial*/) { var object = ES.ToObject(this), self = splitString && isString(this) ? this.split('') : object, length = self.length >>> 0; // If no callback function or if callback is not a callable function if (!isFunction(fun)) { throw new TypeError(fun + ' is not a function'); } // no value to return if no initial value and an empty array if (!length && arguments.length === 1) { throw new TypeError('reduce of empty array with no initial value'); } var i = 0; var result; if (arguments.length >= 2) { result = arguments[1]; } else { do { if (i in self) { result = self[i++]; break; } // if array contains no values, no initial value to return if (++i >= length) { throw new TypeError('reduce of empty array with no initial value'); } } while (true); } for (; i < length; i++) { if (i in self) { result = fun.call(void 0, result, self[i], i, object); } } return result; } }, !reduceCoercesToObject); // ES5 15.4.4.22 // http://es5.github.com/#x15.4.4.22 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight var reduceRightCoercesToObject = false; if (ArrayPrototype.reduceRight) { reduceRightCoercesToObject = typeof ArrayPrototype.reduceRight.call('es5', function (_, __, ___, list) { return list; }) === 'object'; } defineProperties(ArrayPrototype, { reduceRight: function reduceRight(fun /*, initial*/) { var object = ES.ToObject(this), self = splitString && isString(this) ? this.split('') : object, length = self.length >>> 0; // If no callback function or if callback is not a callable function if (!isFunction(fun)) { throw new TypeError(fun + ' is not a function'); } // no value to return if no initial value, empty array if (!length && arguments.length === 1) { throw new TypeError('reduceRight of empty array with no initial value'); } var result, i = length - 1; if (arguments.length >= 2) { result = arguments[1]; } else { do { if (i in self) { result = self[i--]; break; } // if array contains no values, no initial value to return if (--i < 0) { throw new TypeError('reduceRight of empty array with no initial value'); } } while (true); } if (i < 0) { return result; } do { if (i in self) { result = fun.call(void 0, result, self[i], i, object); } } while (i--); return result; } }, !reduceRightCoercesToObject); // ES5 15.4.4.14 // http://es5.github.com/#x15.4.4.14 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf var hasFirefox2IndexOfBug = Array.prototype.indexOf && [0, 1].indexOf(1, 2) !== -1; defineProperties(ArrayPrototype, { indexOf: function indexOf(sought /*, fromIndex */) { var self = splitString && isString(this) ? this.split('') : ES.ToObject(this), length = self.length >>> 0; if (!length) { return -1; } var i = 0; if (arguments.length > 1) { i = toInteger(arguments[1]); } // handle negative indices i = i >= 0 ? i : Math.max(0, length + i); for (; i < length; i++) { if (i in self && self[i] === sought) { return i; } } return -1; } }, hasFirefox2IndexOfBug); // ES5 15.4.4.15 // http://es5.github.com/#x15.4.4.15 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf var hasFirefox2LastIndexOfBug = Array.prototype.lastIndexOf && [0, 1].lastIndexOf(0, -3) !== -1; defineProperties(ArrayPrototype, { lastIndexOf: function lastIndexOf(sought /*, fromIndex */) { var self = splitString && isString(this) ? this.split('') : ES.ToObject(this), length = self.length >>> 0; if (!length) { return -1; } var i = length - 1; if (arguments.length > 1) { i = Math.min(i, toInteger(arguments[1])); } // handle negative indices i = i >= 0 ? i : length - Math.abs(i); for (; i >= 0; i--) { if (i in self && sought === self[i]) { return i; } } return -1; } }, hasFirefox2LastIndexOfBug); // // Object // ====== // // ES5 15.2.3.14 // http://es5.github.com/#x15.2.3.14 // http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation var hasDontEnumBug = !({'toString': null}).propertyIsEnumerable('toString'), hasProtoEnumBug = function () {}.propertyIsEnumerable('prototype'), dontEnums = [ 'toString', 'toLocaleString', 'valueOf', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'constructor' ], dontEnumsLength = dontEnums.length; defineProperties(Object, { keys: function keys(object) { var isFn = isFunction(object), isArgs = isArguments(object), isObject = object !== null && typeof object === 'object', isStr = isObject && isString(object); if (!isObject && !isFn && !isArgs) { throw new TypeError('Object.keys called on a non-object'); } var theKeys = []; var skipProto = hasProtoEnumBug && isFn; if (isStr || isArgs) { for (var i = 0; i < object.length; ++i) { theKeys.push(String(i)); } } else { for (var name in object) { if (!(skipProto && name === 'prototype') && owns(object, name)) { theKeys.push(String(name)); } } } if (hasDontEnumBug) { var ctor = object.constructor, skipConstructor = ctor && ctor.prototype === object; for (var j = 0; j < dontEnumsLength; j++) { var dontEnum = dontEnums[j]; if (!(skipConstructor && dontEnum === 'constructor') && owns(object, dontEnum)) { theKeys.push(dontEnum); } } } return theKeys; } }); var keysWorksWithArguments = Object.keys && (function () { // Safari 5.0 bug return Object.keys(arguments).length === 2; }(1, 2)); var originalKeys = Object.keys; defineProperties(Object, { keys: function keys(object) { if (isArguments(object)) { return originalKeys(ArrayPrototype.slice.call(object)); } else { return originalKeys(object); } } }, !keysWorksWithArguments); // // Date // ==== // // ES5 15.9.5.43 // http://es5.github.com/#x15.9.5.43 // This function returns a String value represent the instance in time // represented by this Date object. The format of the String is the Date Time // string format defined in 15.9.1.15. All fields are present in the String. // The time zone is always UTC, denoted by the suffix Z. If the time value of // this object is not a finite Number a RangeError exception is thrown. var negativeDate = -62198755200000; var negativeYearString = '-000001'; var hasNegativeDateBug = Date.prototype.toISOString && new Date(negativeDate).toISOString().indexOf(negativeYearString) === -1; defineProperties(Date.prototype, { toISOString: function toISOString() { var result, length, value, year, month; if (!isFinite(this)) { throw new RangeError('Date.prototype.toISOString called on non-finite value.'); } year = this.getUTCFullYear(); month = this.getUTCMonth(); // see https://github.com/es-shims/es5-shim/issues/111 year += Math.floor(month / 12); month = (month % 12 + 12) % 12; // the date time string format is specified in 15.9.1.15. result = [month + 1, this.getUTCDate(), this.getUTCHours(), this.getUTCMinutes(), this.getUTCSeconds()]; year = ( (year < 0 ? '-' : (year > 9999 ? '+' : '')) + ('00000' + Math.abs(year)).slice(0 <= year && year <= 9999 ? -4 : -6) ); length = result.length; while (length--) { value = result[length]; // pad months, days, hours, minutes, and seconds to have two // digits. if (value < 10) { result[length] = '0' + value; } } // pad milliseconds to have three digits. return ( year + '-' + result.slice(0, 2).join('-') + 'T' + result.slice(2).join(':') + '.' + ('000' + this.getUTCMilliseconds()).slice(-3) + 'Z' ); } }, hasNegativeDateBug); // ES5 15.9.5.44 // http://es5.github.com/#x15.9.5.44 // This function provides a String representation of a Date object for use by // JSON.stringify (15.12.3). var dateToJSONIsSupported = false; try { dateToJSONIsSupported = ( Date.prototype.toJSON && new Date(NaN).toJSON() === null && new Date(negativeDate).toJSON().indexOf(negativeYearString) !== -1 && Date.prototype.toJSON.call({ // generic toISOString: function () { return true; } }) ); } catch (e) { } if (!dateToJSONIsSupported) { Date.prototype.toJSON = function toJSON(key) { // When the toJSON method is called with argument key, the following // steps are taken: // 1. Let O be the result of calling ToObject, giving it the this // value as its argument. // 2. Let tv be toPrimitive(O, hint Number). var o = Object(this), tv = toPrimitive(o), toISO; // 3. If tv is a Number and is not finite, return null. if (typeof tv === 'number' && !isFinite(tv)) { return null; } // 4. Let toISO be the result of calling the [[Get]] internal method of // O with argument "toISOString". toISO = o.toISOString; // 5. If IsCallable(toISO) is false, throw a TypeError exception. if (typeof toISO !== 'function') { throw new TypeError('toISOString property is not callable'); } // 6. Return the result of calling the [[Call]] internal method of // toISO with O as the this value and an empty argument list. return toISO.call(o); // NOTE 1 The argument is ignored. // NOTE 2 The toJSON function is intentionally generic; it does not // require that its this value be a Date object. Therefore, it can be // transferred to other kinds of objects for use as a method. However, // it does require that any such object have a toISOString method. An // object is free to use the argument key to filter its // stringification. }; } // ES5 15.9.4.2 // http://es5.github.com/#x15.9.4.2 // based on work shared by Daniel Friesen (dantman) // http://gist.github.com/303249 var supportsExtendedYears = Date.parse('+033658-09-27T01:46:40.000Z') === 1e15; var acceptsInvalidDates = !isNaN(Date.parse('2012-04-04T24:00:00.500Z')) || !isNaN(Date.parse('2012-11-31T23:59:59.000Z')); var doesNotParseY2KNewYear = isNaN(Date.parse('2000-01-01T00:00:00.000Z')); if (!Date.parse || doesNotParseY2KNewYear || acceptsInvalidDates || !supportsExtendedYears) { // XXX global assignment won't work in embeddings that use // an alternate object for the context. /*global Date: true */ Date = (function (NativeDate) { // Date.length === 7 function Date(Y, M, D, h, m, s, ms) { var length = arguments.length; if (this instanceof NativeDate) { var date = length === 1 && String(Y) === Y ? // isString(Y) // We explicitly pass it through parse: new NativeDate(Date.parse(Y)) : // We have to manually make calls depending on argument // length here length >= 7 ? new NativeDate(Y, M, D, h, m, s, ms) : length >= 6 ? new NativeDate(Y, M, D, h, m, s) : length >= 5 ? new NativeDate(Y, M, D, h, m) : length >= 4 ? new NativeDate(Y, M, D, h) : length >= 3 ? new NativeDate(Y, M, D) : length >= 2 ? new NativeDate(Y, M) : length >= 1 ? new NativeDate(Y) : new NativeDate(); // Prevent mixups with unfixed Date object date.constructor = Date; return date; } return NativeDate.apply(this, arguments); } // 15.9.1.15 Date Time String Format. var isoDateExpression = new RegExp('^' + '(\\d{4}|[+-]\\d{6})' + // four-digit year capture or sign + // 6-digit extended year '(?:-(\\d{2})' + // optional month capture '(?:-(\\d{2})' + // optional day capture '(?:' + // capture hours:minutes:seconds.milliseconds 'T(\\d{2})' + // hours capture ':(\\d{2})' + // minutes capture '(?:' + // optional :seconds.milliseconds ':(\\d{2})' + // seconds capture '(?:(\\.\\d{1,}))?' + // milliseconds capture ')?' + '(' + // capture UTC offset component 'Z|' + // UTC capture '(?:' + // offset specifier +/-hours:minutes '([-+])' + // sign capture '(\\d{2})' + // hours offset capture ':(\\d{2})' + // minutes offset capture ')' + ')?)?)?)?' + '$'); var months = [ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 ]; function dayFromMonth(year, month) { var t = month > 1 ? 1 : 0; return ( months[month] + Math.floor((year - 1969 + t) / 4) - Math.floor((year - 1901 + t) / 100) + Math.floor((year - 1601 + t) / 400) + 365 * (year - 1970) ); } function toUTC(t) { return Number(new NativeDate(1970, 0, 1, 0, 0, 0, t)); } // Copy any custom methods a 3rd party library may have added for (var key in NativeDate) { Date[key] = NativeDate[key]; } // Copy "native" methods explicitly; they may be non-enumerable Date.now = NativeDate.now; Date.UTC = NativeDate.UTC; Date.prototype = NativeDate.prototype; Date.prototype.constructor = Date; // Upgrade Date.parse to handle simplified ISO 8601 strings Date.parse = function parse(string) { var match = isoDateExpression.exec(string); if (match) { // parse months, days, hours, minutes, seconds, and milliseconds // provide default values if necessary // parse the UTC offset component var year = Number(match[1]), month = Number(match[2] || 1) - 1, day = Number(match[3] || 1) - 1, hour = Number(match[4] || 0), minute = Number(match[5] || 0), second = Number(match[6] || 0), millisecond = Math.floor(Number(match[7] || 0) * 1000), // When time zone is missed, local offset should be used // (ES 5.1 bug) // see https://bugs.ecmascript.org/show_bug.cgi?id=112 isLocalTime = Boolean(match[4] && !match[8]), signOffset = match[9] === '-' ? 1 : -1, hourOffset = Number(match[10] || 0), minuteOffset = Number(match[11] || 0), result; if ( hour < ( minute > 0 || second > 0 || millisecond > 0 ? 24 : 25 ) && minute < 60 && second < 60 && millisecond < 1000 && month > -1 && month < 12 && hourOffset < 24 && minuteOffset < 60 && // detect invalid offsets day > -1 && day < ( dayFromMonth(year, month + 1) - dayFromMonth(year, month) ) ) { result = ( (dayFromMonth(year, month) + day) * 24 + hour + hourOffset * signOffset ) * 60; result = ( (result + minute + minuteOffset * signOffset) * 60 + second ) * 1000 + millisecond; if (isLocalTime) { result = toUTC(result); } if (-8.64e15 <= result && result <= 8.64e15) { return result; } } return NaN; } return NativeDate.parse.apply(this, arguments); }; return Date; }(Date)); /*global Date: false */ } // ES5 15.9.4.4 // http://es5.github.com/#x15.9.4.4 if (!Date.now) { Date.now = function now() { return new Date().getTime(); }; } // // Number // ====== // // ES5.1 15.7.4.5 // http://es5.github.com/#x15.7.4.5 var hasToFixedBugs = NumberPrototype.toFixed && ( (0.00008).toFixed(3) !== '0.000' || (0.9).toFixed(0) !== '1' || (1.255).toFixed(2) !== '1.25' || (1000000000000000128).toFixed(0) !== '1000000000000000128' ); var toFixedHelpers = { base: 1e7, size: 6, data: [0, 0, 0, 0, 0, 0], multiply: function multiply(n, c) { var i = -1; while (++i < toFixedHelpers.size) { c += n * toFixedHelpers.data[i]; toFixedHelpers.data[i] = c % toFixedHelpers.base; c = Math.floor(c / toFixedHelpers.base); } }, divide: function divide(n) { var i = toFixedHelpers.size, c = 0; while (--i >= 0) { c += toFixedHelpers.data[i]; toFixedHelpers.data[i] = Math.floor(c / n); c = (c % n) * toFixedHelpers.base; } }, numToString: function numToString() { var i = toFixedHelpers.size; var s = ''; while (--i >= 0) { if (s !== '' || i === 0 || toFixedHelpers.data[i] !== 0) { var t = String(toFixedHelpers.data[i]); if (s === '') { s = t; } else { s += '0000000'.slice(0, 7 - t.length) + t; } } } return s; }, pow: function pow(x, n, acc) { return (n === 0 ? acc : (n % 2 === 1 ? pow(x, n - 1, acc * x) : pow(x * x, n / 2, acc))); }, log: function log(x) { var n = 0; while (x >= 4096) { n += 12; x /= 4096; } while (x >= 2) { n += 1; x /= 2; } return n; } }; defineProperties(NumberPrototype, { toFixed: function toFixed(fractionDigits) { var f, x, s, m, e, z, j, k; // Test for NaN and round fractionDigits down f = Number(fractionDigits); f = f !== f ? 0 : Math.floor(f); if (f < 0 || f > 20) { throw new RangeError('Number.toFixed called with invalid number of decimals'); } x = Number(this); // Test for NaN if (x !== x) { return 'NaN'; } // If it is too big or small, return the string value of the number if (x <= -1e21 || x >= 1e21) { return String(x); } s = ''; if (x < 0) { s = '-'; x = -x; } m = '0'; if (x > 1e-21) { // 1e-21 < x < 1e21 // -70 < log2(x) < 70 e = toFixedHelpers.log(x * toFixedHelpers.pow(2, 69, 1)) - 69; z = (e < 0 ? x * toFixedHelpers.pow(2, -e, 1) : x / toFixedHelpers.pow(2, e, 1)); z *= 0x10000000000000; // Math.pow(2, 52); e = 52 - e; // -18 < e < 122 // x = z / 2 ^ e if (e > 0) { toFixedHelpers.multiply(0, z); j = f; while (j >= 7) { toFixedHelpers.multiply(1e7, 0); j -= 7; } toFixedHelpers.multiply(toFixedHelpers.pow(10, j, 1), 0); j = e - 1; while (j >= 23) { toFixedHelpers.divide(1 << 23); j -= 23; } toFixedHelpers.divide(1 << j); toFixedHelpers.multiply(1, 1); toFixedHelpers.divide(2); m = toFixedHelpers.numToString(); } else { toFixedHelpers.multiply(0, z); toFixedHelpers.multiply(1 << (-e), 0); m = toFixedHelpers.numToString() + '0.00000000000000000000'.slice(2, 2 + f); } } if (f > 0) { k = m.length; if (k <= f) { m = s + '0.0000000000000000000'.slice(0, f - k + 2) + m; } else { m = s + m.slice(0, k - f) + '.' + m.slice(k - f); } } else { m = s + m; } return m; } }, hasToFixedBugs); // // String // ====== // // ES5 15.5.4.14 // http://es5.github.com/#x15.5.4.14 // [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers] // Many browsers do not split properly with regular expressions or they // do not perform the split correctly under obscure conditions. // See http://blog.stevenlevithan.com/archives/cross-browser-split // I've tested in many browsers and this seems to cover the deviant ones: // 'ab'.split(/(?:ab)*/) should be ["", ""], not [""] // '.'.split(/(.?)(.?)/) should be ["", ".", "", ""], not ["", ""] // 'tesst'.split(/(s)*/) should be ["t", undefined, "e", "s", "t"], not // [undefined, "t", undefined, "e", ...] // ''.split(/.?/) should be [], not [""] // '.'.split(/()()/) should be ["."], not ["", "", "."] var string_split = StringPrototype.split; if ( 'ab'.split(/(?:ab)*/).length !== 2 || '.'.split(/(.?)(.?)/).length !== 4 || 'tesst'.split(/(s)*/)[1] === 't' || 'test'.split(/(?:)/, -1).length !== 4 || ''.split(/.?/).length || '.'.split(/()()/).length > 1 ) { (function () { var compliantExecNpcg = typeof (/()??/).exec('')[1] === 'undefined'; // NPCG: nonparticipating capturing group StringPrototype.split = function (separator, limit) { var string = this; if (typeof separator === 'undefined' && limit === 0) { return []; } // If `separator` is not a regex, use native split if (to_string.call(separator) !== '[object RegExp]') { return string_split.call(this, separator, limit); } var output = [], flags = (separator.ignoreCase ? 'i' : '') + (separator.multiline ? 'm' : '') + (separator.extended ? 'x' : '') + // Proposed for ES6 (separator.sticky ? 'y' : ''), // Firefox 3+ lastLastIndex = 0, // Make `global` and avoid `lastIndex` issues by working with a copy separator2, match, lastIndex, lastLength; separator = new RegExp(separator.source, flags + 'g'); string += ''; // Type-convert if (!compliantExecNpcg) { // Doesn't need flags gy, but they don't hurt separator2 = new RegExp('^' + separator.source + '$(?!\\s)', flags); } /* Values for `limit`, per the spec: * If undefined: 4294967295 // Math.pow(2, 32) - 1 * If 0, Infinity, or NaN: 0 * If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296; * If negative number: 4294967296 - Math.floor(Math.abs(limit)) * If other: Type-convert, then use the above rules */ limit = typeof limit === 'undefined' ? -1 >>> 0 : // Math.pow(2, 32) - 1 ES.ToUint32(limit); while (match = separator.exec(string)) { // `separator.lastIndex` is not reliable cross-browser lastIndex = match.index + match[0].length; if (lastIndex > lastLastIndex) { output.push(string.slice(lastLastIndex, match.index)); // Fix browsers whose `exec` methods don't consistently return `undefined` for // nonparticipating capturing groups if (!compliantExecNpcg && match.length > 1) { match[0].replace(separator2, function () { for (var i = 1; i < arguments.length - 2; i++) { if (typeof arguments[i] === 'undefined') { match[i] = void 0; } } }); } if (match.length > 1 && match.index < string.length) { array_push.apply(output, match.slice(1)); } lastLength = match[0].length; lastLastIndex = lastIndex; if (output.length >= limit) { break; } } if (separator.lastIndex === match.index) { separator.lastIndex++; // Avoid an infinite loop } } if (lastLastIndex === string.length) { if (lastLength || !separator.test('')) { output.push(''); } } else { output.push(string.slice(lastLastIndex)); } return output.length > limit ? output.slice(0, limit) : output; }; }()); // [bugfix, chrome] // If separator is undefined, then the result array contains just one String, // which is the this value (converted to a String). If limit is not undefined, // then the output array is truncated so that it contains no more than limit // elements. // "0".split(undefined, 0) -> [] } else if ('0'.split(void 0, 0).length) { StringPrototype.split = function split(separator, limit) { if (typeof separator === 'undefined' && limit === 0) { return []; } return string_split.call(this, separator, limit); }; } var str_replace = StringPrototype.replace; var replaceReportsGroupsCorrectly = (function () { var groups = []; 'x'.replace(/x(.)?/g, function (match, group) { groups.push(group); }); return groups.length === 1 && typeof groups[0] === 'undefined'; }()); if (!replaceReportsGroupsCorrectly) { StringPrototype.replace = function replace(searchValue, replaceValue) { var isFn = isFunction(replaceValue); var hasCapturingGroups = isRegex(searchValue) && (/\)[*?]/).test(searchValue.source); if (!isFn || !hasCapturingGroups) { return str_replace.call(this, searchValue, replaceValue); } else { var wrappedReplaceValue = function (match) { var length = arguments.length; var originalLastIndex = searchValue.lastIndex; searchValue.lastIndex = 0; var args = searchValue.exec(match) || []; searchValue.lastIndex = originalLastIndex; args.push(arguments[length - 2], arguments[length - 1]); return replaceValue.apply(this, args); }; return str_replace.call(this, searchValue, wrappedReplaceValue); } }; } // ECMA-262, 3rd B.2.3 // Not an ECMAScript standard, although ECMAScript 3rd Edition has a // non-normative section suggesting uniform semantics and it should be // normalized across all browsers // [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE var string_substr = StringPrototype.substr; var hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b'; defineProperties(StringPrototype, { substr: function substr(start, length) { return string_substr.call( this, start < 0 ? ((start = this.length + start) < 0 ? 0 : start) : start, length ); } }, hasNegativeSubstrBug); // ES5 15.5.4.20 // whitespace from: http://es5.github.io/#x15.5.4.20 var ws = '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003' + '\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028' + '\u2029\uFEFF'; var zeroWidth = '\u200b'; var wsRegexChars = '[' + ws + ']'; var trimBeginRegexp = new RegExp('^' + wsRegexChars + wsRegexChars + '*'); var trimEndRegexp = new RegExp(wsRegexChars + wsRegexChars + '*$'); var hasTrimWhitespaceBug = StringPrototype.trim && (ws.trim() || !zeroWidth.trim()); defineProperties(StringPrototype, { // http://blog.stevenlevithan.com/archives/faster-trim-javascript // http://perfectionkills.com/whitespace-deviations/ trim: function trim() { if (typeof this === 'undefined' || this === null) { throw new TypeError("can't convert " + this + ' to object'); } return String(this).replace(trimBeginRegexp, '').replace(trimEndRegexp, ''); } }, hasTrimWhitespaceBug); // ES-5 15.1.2.2 if (parseInt(ws + '08') !== 8 || parseInt(ws + '0x16') !== 22) { /*global parseInt: true */ parseInt = (function (origParseInt) { var hexRegex = /^0[xX]/; return function parseIntES5(str, radix) { str = String(str).trim(); if (!Number(radix)) { radix = hexRegex.test(str) ? 16 : 10; } return origParseInt(str, radix); }; }(parseInt)); } }));