blob: f94b4334fbb600d93c9f7ee2811e3eb155190502 [file] [log] [blame]
Zsolt Haraszti9ceb1b82016-10-01 15:15:18 -07001/*!
2 * https://github.com/es-shims/es5-shim
3 * @license es5-shim Copyright 2009-2015 by contributors, MIT License
4 * see https://github.com/es-shims/es5-shim/blob/master/LICENSE
5 */
6
7// vim: ts=4 sts=4 sw=4 expandtab
8
9// Add semicolon to prevent IIFE from being passed as argument to concatenated code.
10;
11
12// UMD (Universal Module Definition)
13// see https://github.com/umdjs/umd/blob/master/templates/returnExports.js
14(function (root, factory) {
15 'use strict';
16
17 /* global define, exports, module */
18 if (typeof define === 'function' && define.amd) {
19 // AMD. Register as an anonymous module.
20 define(factory);
21 } else if (typeof exports === 'object') {
22 // Node. Does not work with strict CommonJS, but
23 // only CommonJS-like enviroments that support module.exports,
24 // like Node.
25 module.exports = factory();
26 } else {
27 // Browser globals (root is window)
28 root.returnExports = factory();
29 }
30}(this, function () {
31 /**
32 * Brings an environment as close to ECMAScript 5 compliance
33 * as is possible with the facilities of erstwhile engines.
34 *
35 * Annotated ES5: http://es5.github.com/ (specific links below)
36 * ES5 Spec: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf
37 * Required reading: http://javascriptweblog.wordpress.com/2011/12/05/extending-javascript-natives/
38 */
39
40 // Shortcut to an often accessed properties, in order to avoid multiple
41 // dereference that costs universally. This also holds a reference to known-good
42 // functions.
43 var $Array = Array;
44 var ArrayPrototype = $Array.prototype;
45 var $Object = Object;
46 var ObjectPrototype = $Object.prototype;
47 var $Function = Function;
48 var FunctionPrototype = $Function.prototype;
49 var $String = String;
50 var StringPrototype = $String.prototype;
51 var $Number = Number;
52 var NumberPrototype = $Number.prototype;
53 var array_slice = ArrayPrototype.slice;
54 var array_splice = ArrayPrototype.splice;
55 var array_push = ArrayPrototype.push;
56 var array_unshift = ArrayPrototype.unshift;
57 var array_concat = ArrayPrototype.concat;
58 var array_join = ArrayPrototype.join;
59 var call = FunctionPrototype.call;
60 var apply = FunctionPrototype.apply;
61 var max = Math.max;
62 var min = Math.min;
63
64 // Having a toString local variable name breaks in Opera so use to_string.
65 var to_string = ObjectPrototype.toString;
66
67 /* global Symbol */
68 /* eslint-disable one-var-declaration-per-line, no-redeclare, max-statements-per-line */
69 var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';
70 var isCallable; /* inlined from https://npmjs.com/is-callable */ var fnToStr = Function.prototype.toString, constructorRegex = /^\s*class /, isES6ClassFn = function isES6ClassFn(value) { try { var fnStr = fnToStr.call(value); var singleStripped = fnStr.replace(/\/\/.*\n/g, ''); var multiStripped = singleStripped.replace(/\/\*[.\s\S]*\*\//g, ''); var spaceStripped = multiStripped.replace(/\n/mg, ' ').replace(/ {2}/g, ' '); return constructorRegex.test(spaceStripped); } catch (e) { return false; /* not a function */ } }, tryFunctionObject = function tryFunctionObject(value) { try { if (isES6ClassFn(value)) { return false; } fnToStr.call(value); return true; } catch (e) { return false; } }, fnClass = '[object Function]', genClass = '[object GeneratorFunction]', isCallable = function isCallable(value) { if (!value) { return false; } if (typeof value !== 'function' && typeof value !== 'object') { return false; } if (hasToStringTag) { return tryFunctionObject(value); } if (isES6ClassFn(value)) { return false; } var strClass = to_string.call(value); return strClass === fnClass || strClass === genClass; };
71
72 var isRegex; /* inlined from https://npmjs.com/is-regex */ var regexExec = RegExp.prototype.exec, tryRegexExec = function tryRegexExec(value) { try { regexExec.call(value); return true; } catch (e) { return false; } }, regexClass = '[object RegExp]'; isRegex = function isRegex(value) { if (typeof value !== 'object') { return false; } return hasToStringTag ? tryRegexExec(value) : to_string.call(value) === regexClass; };
73 var isString; /* inlined from https://npmjs.com/is-string */ var strValue = String.prototype.valueOf, tryStringObject = function tryStringObject(value) { try { strValue.call(value); return true; } catch (e) { return false; } }, stringClass = '[object String]'; isString = function isString(value) { if (typeof value === 'string') { return true; } if (typeof value !== 'object') { return false; } return hasToStringTag ? tryStringObject(value) : to_string.call(value) === stringClass; };
74 /* eslint-enable one-var-declaration-per-line, no-redeclare, max-statements-per-line */
75
76 /* inlined from http://npmjs.com/define-properties */
77 var supportsDescriptors = $Object.defineProperty && (function () {
78 try {
79 var obj = {};
80 $Object.defineProperty(obj, 'x', { enumerable: false, value: obj });
81 for (var _ in obj) { // jscs:ignore disallowUnusedVariables
82 return false;
83 }
84 return obj.x === obj;
85 } catch (e) { /* this is ES3 */
86 return false;
87 }
88 }());
89 var defineProperties = (function (has) {
90 // Define configurable, writable, and non-enumerable props
91 // if they don't exist.
92 var defineProperty;
93 if (supportsDescriptors) {
94 defineProperty = function (object, name, method, forceAssign) {
95 if (!forceAssign && (name in object)) {
96 return;
97 }
98 $Object.defineProperty(object, name, {
99 configurable: true,
100 enumerable: false,
101 writable: true,
102 value: method
103 });
104 };
105 } else {
106 defineProperty = function (object, name, method, forceAssign) {
107 if (!forceAssign && (name in object)) {
108 return;
109 }
110 object[name] = method;
111 };
112 }
113 return function defineProperties(object, map, forceAssign) {
114 for (var name in map) {
115 if (has.call(map, name)) {
116 defineProperty(object, name, map[name], forceAssign);
117 }
118 }
119 };
120 }(ObjectPrototype.hasOwnProperty));
121
122 //
123 // Util
124 // ======
125 //
126
127 /* replaceable with https://npmjs.com/package/es-abstract /helpers/isPrimitive */
128 var isPrimitive = function isPrimitive(input) {
129 var type = typeof input;
130 return input === null || (type !== 'object' && type !== 'function');
131 };
132
133 var isActualNaN = $Number.isNaN || function isActualNaN(x) {
134 return x !== x;
135 };
136
137 var ES = {
138 // ES5 9.4
139 // http://es5.github.com/#x9.4
140 // http://jsperf.com/to-integer
141 /* replaceable with https://npmjs.com/package/es-abstract ES5.ToInteger */
142 ToInteger: function ToInteger(num) {
143 var n = +num;
144 if (isActualNaN(n)) {
145 n = 0;
146 } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {
147 n = (n > 0 || -1) * Math.floor(Math.abs(n));
148 }
149 return n;
150 },
151
152 /* replaceable with https://npmjs.com/package/es-abstract ES5.ToPrimitive */
153 ToPrimitive: function ToPrimitive(input) {
154 var val, valueOf, toStr;
155 if (isPrimitive(input)) {
156 return input;
157 }
158 valueOf = input.valueOf;
159 if (isCallable(valueOf)) {
160 val = valueOf.call(input);
161 if (isPrimitive(val)) {
162 return val;
163 }
164 }
165 toStr = input.toString;
166 if (isCallable(toStr)) {
167 val = toStr.call(input);
168 if (isPrimitive(val)) {
169 return val;
170 }
171 }
172 throw new TypeError();
173 },
174
175 // ES5 9.9
176 // http://es5.github.com/#x9.9
177 /* replaceable with https://npmjs.com/package/es-abstract ES5.ToObject */
178 ToObject: function (o) {
179 if (o == null) { // this matches both null and undefined
180 throw new TypeError("can't convert " + o + ' to object');
181 }
182 return $Object(o);
183 },
184
185 /* replaceable with https://npmjs.com/package/es-abstract ES5.ToUint32 */
186 ToUint32: function ToUint32(x) {
187 return x >>> 0;
188 }
189 };
190
191 //
192 // Function
193 // ========
194 //
195
196 // ES-5 15.3.4.5
197 // http://es5.github.com/#x15.3.4.5
198
199 var Empty = function Empty() {};
200
201 defineProperties(FunctionPrototype, {
202 bind: function bind(that) { // .length is 1
203 // 1. Let Target be the this value.
204 var target = this;
205 // 2. If IsCallable(Target) is false, throw a TypeError exception.
206 if (!isCallable(target)) {
207 throw new TypeError('Function.prototype.bind called on incompatible ' + target);
208 }
209 // 3. Let A be a new (possibly empty) internal list of all of the
210 // argument values provided after thisArg (arg1, arg2 etc), in order.
211 // XXX slicedArgs will stand in for "A" if used
212 var args = array_slice.call(arguments, 1); // for normal call
213 // 4. Let F be a new native ECMAScript object.
214 // 11. Set the [[Prototype]] internal property of F to the standard
215 // built-in Function prototype object as specified in 15.3.3.1.
216 // 12. Set the [[Call]] internal property of F as described in
217 // 15.3.4.5.1.
218 // 13. Set the [[Construct]] internal property of F as described in
219 // 15.3.4.5.2.
220 // 14. Set the [[HasInstance]] internal property of F as described in
221 // 15.3.4.5.3.
222 var bound;
223 var binder = function () {
224
225 if (this instanceof bound) {
226 // 15.3.4.5.2 [[Construct]]
227 // When the [[Construct]] internal method of a function object,
228 // F that was created using the bind function is called with a
229 // list of arguments ExtraArgs, the following steps are taken:
230 // 1. Let target be the value of F's [[TargetFunction]]
231 // internal property.
232 // 2. If target has no [[Construct]] internal method, a
233 // TypeError exception is thrown.
234 // 3. Let boundArgs be the value of F's [[BoundArgs]] internal
235 // property.
236 // 4. Let args be a new list containing the same values as the
237 // list boundArgs in the same order followed by the same
238 // values as the list ExtraArgs in the same order.
239 // 5. Return the result of calling the [[Construct]] internal
240 // method of target providing args as the arguments.
241
242 var result = apply.call(
243 target,
244 this,
245 array_concat.call(args, array_slice.call(arguments))
246 );
247 if ($Object(result) === result) {
248 return result;
249 }
250 return this;
251
252 } else {
253 // 15.3.4.5.1 [[Call]]
254 // When the [[Call]] internal method of a function object, F,
255 // which was created using the bind function is called with a
256 // this value and a list of arguments ExtraArgs, the following
257 // steps are taken:
258 // 1. Let boundArgs be the value of F's [[BoundArgs]] internal
259 // property.
260 // 2. Let boundThis be the value of F's [[BoundThis]] internal
261 // property.
262 // 3. Let target be the value of F's [[TargetFunction]] internal
263 // property.
264 // 4. Let args be a new list containing the same values as the
265 // list boundArgs in the same order followed by the same
266 // values as the list ExtraArgs in the same order.
267 // 5. Return the result of calling the [[Call]] internal method
268 // of target providing boundThis as the this value and
269 // providing args as the arguments.
270
271 // equiv: target.call(this, ...boundArgs, ...args)
272 return apply.call(
273 target,
274 that,
275 array_concat.call(args, array_slice.call(arguments))
276 );
277
278 }
279
280 };
281
282 // 15. If the [[Class]] internal property of Target is "Function", then
283 // a. Let L be the length property of Target minus the length of A.
284 // b. Set the length own property of F to either 0 or L, whichever is
285 // larger.
286 // 16. Else set the length own property of F to 0.
287
288 var boundLength = max(0, target.length - args.length);
289
290 // 17. Set the attributes of the length own property of F to the values
291 // specified in 15.3.5.1.
292 var boundArgs = [];
293 for (var i = 0; i < boundLength; i++) {
294 array_push.call(boundArgs, '$' + i);
295 }
296
297 // XXX Build a dynamic function with desired amount of arguments is the only
298 // way to set the length property of a function.
299 // In environments where Content Security Policies enabled (Chrome extensions,
300 // for ex.) all use of eval or Function costructor throws an exception.
301 // However in all of these environments Function.prototype.bind exists
302 // and so this code will never be executed.
303 bound = $Function('binder', 'return function (' + array_join.call(boundArgs, ',') + '){ return binder.apply(this, arguments); }')(binder);
304
305 if (target.prototype) {
306 Empty.prototype = target.prototype;
307 bound.prototype = new Empty();
308 // Clean up dangling references.
309 Empty.prototype = null;
310 }
311
312 // TODO
313 // 18. Set the [[Extensible]] internal property of F to true.
314
315 // TODO
316 // 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
317 // 20. Call the [[DefineOwnProperty]] internal method of F with
318 // arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
319 // thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
320 // false.
321 // 21. Call the [[DefineOwnProperty]] internal method of F with
322 // arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
323 // [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
324 // and false.
325
326 // TODO
327 // NOTE Function objects created using Function.prototype.bind do not
328 // have a prototype property or the [[Code]], [[FormalParameters]], and
329 // [[Scope]] internal properties.
330 // XXX can't delete prototype in pure-js.
331
332 // 22. Return F.
333 return bound;
334 }
335 });
336
337 // _Please note: Shortcuts are defined after `Function.prototype.bind` as we
338 // use it in defining shortcuts.
339 var owns = call.bind(ObjectPrototype.hasOwnProperty);
340 var toStr = call.bind(ObjectPrototype.toString);
341 var arraySlice = call.bind(array_slice);
342 var arraySliceApply = apply.bind(array_slice);
343 var strSlice = call.bind(StringPrototype.slice);
344 var strSplit = call.bind(StringPrototype.split);
345 var strIndexOf = call.bind(StringPrototype.indexOf);
346 var pushCall = call.bind(array_push);
347 var isEnum = call.bind(ObjectPrototype.propertyIsEnumerable);
348 var arraySort = call.bind(ArrayPrototype.sort);
349
350 //
351 // Array
352 // =====
353 //
354
355 var isArray = $Array.isArray || function isArray(obj) {
356 return toStr(obj) === '[object Array]';
357 };
358
359 // ES5 15.4.4.12
360 // http://es5.github.com/#x15.4.4.13
361 // Return len+argCount.
362 // [bugfix, ielt8]
363 // IE < 8 bug: [].unshift(0) === undefined but should be "1"
364 var hasUnshiftReturnValueBug = [].unshift(0) !== 1;
365 defineProperties(ArrayPrototype, {
366 unshift: function () {
367 array_unshift.apply(this, arguments);
368 return this.length;
369 }
370 }, hasUnshiftReturnValueBug);
371
372 // ES5 15.4.3.2
373 // http://es5.github.com/#x15.4.3.2
374 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
375 defineProperties($Array, { isArray: isArray });
376
377 // The IsCallable() check in the Array functions
378 // has been replaced with a strict check on the
379 // internal class of the object to trap cases where
380 // the provided function was actually a regular
381 // expression literal, which in V8 and
382 // JavaScriptCore is a typeof "function". Only in
383 // V8 are regular expression literals permitted as
384 // reduce parameters, so it is desirable in the
385 // general case for the shim to match the more
386 // strict and common behavior of rejecting regular
387 // expressions.
388
389 // ES5 15.4.4.18
390 // http://es5.github.com/#x15.4.4.18
391 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/forEach
392
393 // Check failure of by-index access of string characters (IE < 9)
394 // and failure of `0 in boxedString` (Rhino)
395 var boxedString = $Object('a');
396 var splitString = boxedString[0] !== 'a' || !(0 in boxedString);
397
398 var properlyBoxesContext = function properlyBoxed(method) {
399 // Check node 0.6.21 bug where third parameter is not boxed
400 var properlyBoxesNonStrict = true;
401 var properlyBoxesStrict = true;
402 var threwException = false;
403 if (method) {
404 try {
405 method.call('foo', function (_, __, context) {
406 if (typeof context !== 'object') {
407 properlyBoxesNonStrict = false;
408 }
409 });
410
411 method.call([1], function () {
412 'use strict';
413
414 properlyBoxesStrict = typeof this === 'string';
415 }, 'x');
416 } catch (e) {
417 threwException = true;
418 }
419 }
420 return !!method && !threwException && properlyBoxesNonStrict && properlyBoxesStrict;
421 };
422
423 defineProperties(ArrayPrototype, {
424 forEach: function forEach(callbackfn/*, thisArg*/) {
425 var object = ES.ToObject(this);
426 var self = splitString && isString(this) ? strSplit(this, '') : object;
427 var i = -1;
428 var length = ES.ToUint32(self.length);
429 var T;
430 if (arguments.length > 1) {
431 T = arguments[1];
432 }
433
434 // If no callback function or if callback is not a callable function
435 if (!isCallable(callbackfn)) {
436 throw new TypeError('Array.prototype.forEach callback must be a function');
437 }
438
439 while (++i < length) {
440 if (i in self) {
441 // Invoke the callback function with call, passing arguments:
442 // context, property value, property key, thisArg object
443 if (typeof T === 'undefined') {
444 callbackfn(self[i], i, object);
445 } else {
446 callbackfn.call(T, self[i], i, object);
447 }
448 }
449 }
450 }
451 }, !properlyBoxesContext(ArrayPrototype.forEach));
452
453 // ES5 15.4.4.19
454 // http://es5.github.com/#x15.4.4.19
455 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map
456 defineProperties(ArrayPrototype, {
457 map: function map(callbackfn/*, thisArg*/) {
458 var object = ES.ToObject(this);
459 var self = splitString && isString(this) ? strSplit(this, '') : object;
460 var length = ES.ToUint32(self.length);
461 var result = $Array(length);
462 var T;
463 if (arguments.length > 1) {
464 T = arguments[1];
465 }
466
467 // If no callback function or if callback is not a callable function
468 if (!isCallable(callbackfn)) {
469 throw new TypeError('Array.prototype.map callback must be a function');
470 }
471
472 for (var i = 0; i < length; i++) {
473 if (i in self) {
474 if (typeof T === 'undefined') {
475 result[i] = callbackfn(self[i], i, object);
476 } else {
477 result[i] = callbackfn.call(T, self[i], i, object);
478 }
479 }
480 }
481 return result;
482 }
483 }, !properlyBoxesContext(ArrayPrototype.map));
484
485 // ES5 15.4.4.20
486 // http://es5.github.com/#x15.4.4.20
487 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/filter
488 defineProperties(ArrayPrototype, {
489 filter: function filter(callbackfn/*, thisArg*/) {
490 var object = ES.ToObject(this);
491 var self = splitString && isString(this) ? strSplit(this, '') : object;
492 var length = ES.ToUint32(self.length);
493 var result = [];
494 var value;
495 var T;
496 if (arguments.length > 1) {
497 T = arguments[1];
498 }
499
500 // If no callback function or if callback is not a callable function
501 if (!isCallable(callbackfn)) {
502 throw new TypeError('Array.prototype.filter callback must be a function');
503 }
504
505 for (var i = 0; i < length; i++) {
506 if (i in self) {
507 value = self[i];
508 if (typeof T === 'undefined' ? callbackfn(value, i, object) : callbackfn.call(T, value, i, object)) {
509 pushCall(result, value);
510 }
511 }
512 }
513 return result;
514 }
515 }, !properlyBoxesContext(ArrayPrototype.filter));
516
517 // ES5 15.4.4.16
518 // http://es5.github.com/#x15.4.4.16
519 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every
520 defineProperties(ArrayPrototype, {
521 every: function every(callbackfn/*, thisArg*/) {
522 var object = ES.ToObject(this);
523 var self = splitString && isString(this) ? strSplit(this, '') : object;
524 var length = ES.ToUint32(self.length);
525 var T;
526 if (arguments.length > 1) {
527 T = arguments[1];
528 }
529
530 // If no callback function or if callback is not a callable function
531 if (!isCallable(callbackfn)) {
532 throw new TypeError('Array.prototype.every callback must be a function');
533 }
534
535 for (var i = 0; i < length; i++) {
536 if (i in self && !(typeof T === 'undefined' ? callbackfn(self[i], i, object) : callbackfn.call(T, self[i], i, object))) {
537 return false;
538 }
539 }
540 return true;
541 }
542 }, !properlyBoxesContext(ArrayPrototype.every));
543
544 // ES5 15.4.4.17
545 // http://es5.github.com/#x15.4.4.17
546 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some
547 defineProperties(ArrayPrototype, {
548 some: function some(callbackfn/*, thisArg */) {
549 var object = ES.ToObject(this);
550 var self = splitString && isString(this) ? strSplit(this, '') : object;
551 var length = ES.ToUint32(self.length);
552 var T;
553 if (arguments.length > 1) {
554 T = arguments[1];
555 }
556
557 // If no callback function or if callback is not a callable function
558 if (!isCallable(callbackfn)) {
559 throw new TypeError('Array.prototype.some callback must be a function');
560 }
561
562 for (var i = 0; i < length; i++) {
563 if (i in self && (typeof T === 'undefined' ? callbackfn(self[i], i, object) : callbackfn.call(T, self[i], i, object))) {
564 return true;
565 }
566 }
567 return false;
568 }
569 }, !properlyBoxesContext(ArrayPrototype.some));
570
571 // ES5 15.4.4.21
572 // http://es5.github.com/#x15.4.4.21
573 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce
574 var reduceCoercesToObject = false;
575 if (ArrayPrototype.reduce) {
576 reduceCoercesToObject = typeof ArrayPrototype.reduce.call('es5', function (_, __, ___, list) {
577 return list;
578 }) === 'object';
579 }
580 defineProperties(ArrayPrototype, {
581 reduce: function reduce(callbackfn/*, initialValue*/) {
582 var object = ES.ToObject(this);
583 var self = splitString && isString(this) ? strSplit(this, '') : object;
584 var length = ES.ToUint32(self.length);
585
586 // If no callback function or if callback is not a callable function
587 if (!isCallable(callbackfn)) {
588 throw new TypeError('Array.prototype.reduce callback must be a function');
589 }
590
591 // no value to return if no initial value and an empty array
592 if (length === 0 && arguments.length === 1) {
593 throw new TypeError('reduce of empty array with no initial value');
594 }
595
596 var i = 0;
597 var result;
598 if (arguments.length >= 2) {
599 result = arguments[1];
600 } else {
601 do {
602 if (i in self) {
603 result = self[i++];
604 break;
605 }
606
607 // if array contains no values, no initial value to return
608 if (++i >= length) {
609 throw new TypeError('reduce of empty array with no initial value');
610 }
611 } while (true);
612 }
613
614 for (; i < length; i++) {
615 if (i in self) {
616 result = callbackfn(result, self[i], i, object);
617 }
618 }
619
620 return result;
621 }
622 }, !reduceCoercesToObject);
623
624 // ES5 15.4.4.22
625 // http://es5.github.com/#x15.4.4.22
626 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight
627 var reduceRightCoercesToObject = false;
628 if (ArrayPrototype.reduceRight) {
629 reduceRightCoercesToObject = typeof ArrayPrototype.reduceRight.call('es5', function (_, __, ___, list) {
630 return list;
631 }) === 'object';
632 }
633 defineProperties(ArrayPrototype, {
634 reduceRight: function reduceRight(callbackfn/*, initial*/) {
635 var object = ES.ToObject(this);
636 var self = splitString && isString(this) ? strSplit(this, '') : object;
637 var length = ES.ToUint32(self.length);
638
639 // If no callback function or if callback is not a callable function
640 if (!isCallable(callbackfn)) {
641 throw new TypeError('Array.prototype.reduceRight callback must be a function');
642 }
643
644 // no value to return if no initial value, empty array
645 if (length === 0 && arguments.length === 1) {
646 throw new TypeError('reduceRight of empty array with no initial value');
647 }
648
649 var result;
650 var i = length - 1;
651 if (arguments.length >= 2) {
652 result = arguments[1];
653 } else {
654 do {
655 if (i in self) {
656 result = self[i--];
657 break;
658 }
659
660 // if array contains no values, no initial value to return
661 if (--i < 0) {
662 throw new TypeError('reduceRight of empty array with no initial value');
663 }
664 } while (true);
665 }
666
667 if (i < 0) {
668 return result;
669 }
670
671 do {
672 if (i in self) {
673 result = callbackfn(result, self[i], i, object);
674 }
675 } while (i--);
676
677 return result;
678 }
679 }, !reduceRightCoercesToObject);
680
681 // ES5 15.4.4.14
682 // http://es5.github.com/#x15.4.4.14
683 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
684 var hasFirefox2IndexOfBug = ArrayPrototype.indexOf && [0, 1].indexOf(1, 2) !== -1;
685 defineProperties(ArrayPrototype, {
686 indexOf: function indexOf(searchElement/*, fromIndex */) {
687 var self = splitString && isString(this) ? strSplit(this, '') : ES.ToObject(this);
688 var length = ES.ToUint32(self.length);
689
690 if (length === 0) {
691 return -1;
692 }
693
694 var i = 0;
695 if (arguments.length > 1) {
696 i = ES.ToInteger(arguments[1]);
697 }
698
699 // handle negative indices
700 i = i >= 0 ? i : max(0, length + i);
701 for (; i < length; i++) {
702 if (i in self && self[i] === searchElement) {
703 return i;
704 }
705 }
706 return -1;
707 }
708 }, hasFirefox2IndexOfBug);
709
710 // ES5 15.4.4.15
711 // http://es5.github.com/#x15.4.4.15
712 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf
713 var hasFirefox2LastIndexOfBug = ArrayPrototype.lastIndexOf && [0, 1].lastIndexOf(0, -3) !== -1;
714 defineProperties(ArrayPrototype, {
715 lastIndexOf: function lastIndexOf(searchElement/*, fromIndex */) {
716 var self = splitString && isString(this) ? strSplit(this, '') : ES.ToObject(this);
717 var length = ES.ToUint32(self.length);
718
719 if (length === 0) {
720 return -1;
721 }
722 var i = length - 1;
723 if (arguments.length > 1) {
724 i = min(i, ES.ToInteger(arguments[1]));
725 }
726 // handle negative indices
727 i = i >= 0 ? i : length - Math.abs(i);
728 for (; i >= 0; i--) {
729 if (i in self && searchElement === self[i]) {
730 return i;
731 }
732 }
733 return -1;
734 }
735 }, hasFirefox2LastIndexOfBug);
736
737 // ES5 15.4.4.12
738 // http://es5.github.com/#x15.4.4.12
739 var spliceNoopReturnsEmptyArray = (function () {
740 var a = [1, 2];
741 var result = a.splice();
742 return a.length === 2 && isArray(result) && result.length === 0;
743 }());
744 defineProperties(ArrayPrototype, {
745 // Safari 5.0 bug where .splice() returns undefined
746 splice: function splice(start, deleteCount) {
747 if (arguments.length === 0) {
748 return [];
749 } else {
750 return array_splice.apply(this, arguments);
751 }
752 }
753 }, !spliceNoopReturnsEmptyArray);
754
755 var spliceWorksWithEmptyObject = (function () {
756 var obj = {};
757 ArrayPrototype.splice.call(obj, 0, 0, 1);
758 return obj.length === 1;
759 }());
760 defineProperties(ArrayPrototype, {
761 splice: function splice(start, deleteCount) {
762 if (arguments.length === 0) {
763 return [];
764 }
765 var args = arguments;
766 this.length = max(ES.ToInteger(this.length), 0);
767 if (arguments.length > 0 && typeof deleteCount !== 'number') {
768 args = arraySlice(arguments);
769 if (args.length < 2) {
770 pushCall(args, this.length - start);
771 } else {
772 args[1] = ES.ToInteger(deleteCount);
773 }
774 }
775 return array_splice.apply(this, args);
776 }
777 }, !spliceWorksWithEmptyObject);
778 var spliceWorksWithLargeSparseArrays = (function () {
779 // Per https://github.com/es-shims/es5-shim/issues/295
780 // Safari 7/8 breaks with sparse arrays of size 1e5 or greater
781 var arr = new $Array(1e5);
782 // note: the index MUST be 8 or larger or the test will false pass
783 arr[8] = 'x';
784 arr.splice(1, 1);
785 // note: this test must be defined *after* the indexOf shim
786 // per https://github.com/es-shims/es5-shim/issues/313
787 return arr.indexOf('x') === 7;
788 }());
789 var spliceWorksWithSmallSparseArrays = (function () {
790 // Per https://github.com/es-shims/es5-shim/issues/295
791 // Opera 12.15 breaks on this, no idea why.
792 var n = 256;
793 var arr = [];
794 arr[n] = 'a';
795 arr.splice(n + 1, 0, 'b');
796 return arr[n] === 'a';
797 }());
798 defineProperties(ArrayPrototype, {
799 splice: function splice(start, deleteCount) {
800 var O = ES.ToObject(this);
801 var A = [];
802 var len = ES.ToUint32(O.length);
803 var relativeStart = ES.ToInteger(start);
804 var actualStart = relativeStart < 0 ? max((len + relativeStart), 0) : min(relativeStart, len);
805 var actualDeleteCount = min(max(ES.ToInteger(deleteCount), 0), len - actualStart);
806
807 var k = 0;
808 var from;
809 while (k < actualDeleteCount) {
810 from = $String(actualStart + k);
811 if (owns(O, from)) {
812 A[k] = O[from];
813 }
814 k += 1;
815 }
816
817 var items = arraySlice(arguments, 2);
818 var itemCount = items.length;
819 var to;
820 if (itemCount < actualDeleteCount) {
821 k = actualStart;
822 var maxK = len - actualDeleteCount;
823 while (k < maxK) {
824 from = $String(k + actualDeleteCount);
825 to = $String(k + itemCount);
826 if (owns(O, from)) {
827 O[to] = O[from];
828 } else {
829 delete O[to];
830 }
831 k += 1;
832 }
833 k = len;
834 var minK = len - actualDeleteCount + itemCount;
835 while (k > minK) {
836 delete O[k - 1];
837 k -= 1;
838 }
839 } else if (itemCount > actualDeleteCount) {
840 k = len - actualDeleteCount;
841 while (k > actualStart) {
842 from = $String(k + actualDeleteCount - 1);
843 to = $String(k + itemCount - 1);
844 if (owns(O, from)) {
845 O[to] = O[from];
846 } else {
847 delete O[to];
848 }
849 k -= 1;
850 }
851 }
852 k = actualStart;
853 for (var i = 0; i < items.length; ++i) {
854 O[k] = items[i];
855 k += 1;
856 }
857 O.length = len - actualDeleteCount + itemCount;
858
859 return A;
860 }
861 }, !spliceWorksWithLargeSparseArrays || !spliceWorksWithSmallSparseArrays);
862
863 var originalJoin = ArrayPrototype.join;
864 var hasStringJoinBug;
865 try {
866 hasStringJoinBug = Array.prototype.join.call('123', ',') !== '1,2,3';
867 } catch (e) {
868 hasStringJoinBug = true;
869 }
870 if (hasStringJoinBug) {
871 defineProperties(ArrayPrototype, {
872 join: function join(separator) {
873 var sep = typeof separator === 'undefined' ? ',' : separator;
874 return originalJoin.call(isString(this) ? strSplit(this, '') : this, sep);
875 }
876 }, hasStringJoinBug);
877 }
878
879 var hasJoinUndefinedBug = [1, 2].join(undefined) !== '1,2';
880 if (hasJoinUndefinedBug) {
881 defineProperties(ArrayPrototype, {
882 join: function join(separator) {
883 var sep = typeof separator === 'undefined' ? ',' : separator;
884 return originalJoin.call(this, sep);
885 }
886 }, hasJoinUndefinedBug);
887 }
888
889 var pushShim = function push(item) {
890 var O = ES.ToObject(this);
891 var n = ES.ToUint32(O.length);
892 var i = 0;
893 while (i < arguments.length) {
894 O[n + i] = arguments[i];
895 i += 1;
896 }
897 O.length = n + i;
898 return n + i;
899 };
900
901 var pushIsNotGeneric = (function () {
902 var obj = {};
903 var result = Array.prototype.push.call(obj, undefined);
904 return result !== 1 || obj.length !== 1 || typeof obj[0] !== 'undefined' || !owns(obj, 0);
905 }());
906 defineProperties(ArrayPrototype, {
907 push: function push(item) {
908 if (isArray(this)) {
909 return array_push.apply(this, arguments);
910 }
911 return pushShim.apply(this, arguments);
912 }
913 }, pushIsNotGeneric);
914
915 // This fixes a very weird bug in Opera 10.6 when pushing `undefined
916 var pushUndefinedIsWeird = (function () {
917 var arr = [];
918 var result = arr.push(undefined);
919 return result !== 1 || arr.length !== 1 || typeof arr[0] !== 'undefined' || !owns(arr, 0);
920 }());
921 defineProperties(ArrayPrototype, { push: pushShim }, pushUndefinedIsWeird);
922
923 // ES5 15.2.3.14
924 // http://es5.github.io/#x15.4.4.10
925 // Fix boxed string bug
926 defineProperties(ArrayPrototype, {
927 slice: function (start, end) {
928 var arr = isString(this) ? strSplit(this, '') : this;
929 return arraySliceApply(arr, arguments);
930 }
931 }, splitString);
932
933 var sortIgnoresNonFunctions = (function () {
934 try {
935 [1, 2].sort(null);
936 [1, 2].sort({});
937 return true;
938 } catch (e) {}
939 return false;
940 }());
941 var sortThrowsOnRegex = (function () {
942 // this is a problem in Firefox 4, in which `typeof /a/ === 'function'`
943 try {
944 [1, 2].sort(/a/);
945 return false;
946 } catch (e) {}
947 return true;
948 }());
949 var sortIgnoresUndefined = (function () {
950 // applies in IE 8, for one.
951 try {
952 [1, 2].sort(undefined);
953 return true;
954 } catch (e) {}
955 return false;
956 }());
957 defineProperties(ArrayPrototype, {
958 sort: function sort(compareFn) {
959 if (typeof compareFn === 'undefined') {
960 return arraySort(this);
961 }
962 if (!isCallable(compareFn)) {
963 throw new TypeError('Array.prototype.sort callback must be a function');
964 }
965 return arraySort(this, compareFn);
966 }
967 }, sortIgnoresNonFunctions || !sortIgnoresUndefined || !sortThrowsOnRegex);
968
969 //
970 // Object
971 // ======
972 //
973
974 // ES5 15.2.3.14
975 // http://es5.github.com/#x15.2.3.14
976
977 // http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation
978 var hasDontEnumBug = !isEnum({ 'toString': null }, 'toString');
979 var hasProtoEnumBug = isEnum(function () {}, 'prototype');
980 var hasStringEnumBug = !owns('x', '0');
981 var equalsConstructorPrototype = function (o) {
982 var ctor = o.constructor;
983 return ctor && ctor.prototype === o;
984 };
985 var blacklistedKeys = {
986 $window: true,
987 $console: true,
988 $parent: true,
989 $self: true,
990 $frame: true,
991 $frames: true,
992 $frameElement: true,
993 $webkitIndexedDB: true,
994 $webkitStorageInfo: true,
995 $external: true
996 };
997 var hasAutomationEqualityBug = (function () {
998 /* globals window */
999 if (typeof window === 'undefined') {
1000 return false;
1001 }
1002 for (var k in window) {
1003 try {
1004 if (!blacklistedKeys['$' + k] && owns(window, k) && window[k] !== null && typeof window[k] === 'object') {
1005 equalsConstructorPrototype(window[k]);
1006 }
1007 } catch (e) {
1008 return true;
1009 }
1010 }
1011 return false;
1012 }());
1013 var equalsConstructorPrototypeIfNotBuggy = function (object) {
1014 if (typeof window === 'undefined' || !hasAutomationEqualityBug) {
1015 return equalsConstructorPrototype(object);
1016 }
1017 try {
1018 return equalsConstructorPrototype(object);
1019 } catch (e) {
1020 return false;
1021 }
1022 };
1023 var dontEnums = [
1024 'toString',
1025 'toLocaleString',
1026 'valueOf',
1027 'hasOwnProperty',
1028 'isPrototypeOf',
1029 'propertyIsEnumerable',
1030 'constructor'
1031 ];
1032 var dontEnumsLength = dontEnums.length;
1033
1034 // taken directly from https://github.com/ljharb/is-arguments/blob/master/index.js
1035 // can be replaced with require('is-arguments') if we ever use a build process instead
1036 var isStandardArguments = function isArguments(value) {
1037 return toStr(value) === '[object Arguments]';
1038 };
1039 var isLegacyArguments = function isArguments(value) {
1040 return value !== null &&
1041 typeof value === 'object' &&
1042 typeof value.length === 'number' &&
1043 value.length >= 0 &&
1044 !isArray(value) &&
1045 isCallable(value.callee);
1046 };
1047 var isArguments = isStandardArguments(arguments) ? isStandardArguments : isLegacyArguments;
1048
1049 defineProperties($Object, {
1050 keys: function keys(object) {
1051 var isFn = isCallable(object);
1052 var isArgs = isArguments(object);
1053 var isObject = object !== null && typeof object === 'object';
1054 var isStr = isObject && isString(object);
1055
1056 if (!isObject && !isFn && !isArgs) {
1057 throw new TypeError('Object.keys called on a non-object');
1058 }
1059
1060 var theKeys = [];
1061 var skipProto = hasProtoEnumBug && isFn;
1062 if ((isStr && hasStringEnumBug) || isArgs) {
1063 for (var i = 0; i < object.length; ++i) {
1064 pushCall(theKeys, $String(i));
1065 }
1066 }
1067
1068 if (!isArgs) {
1069 for (var name in object) {
1070 if (!(skipProto && name === 'prototype') && owns(object, name)) {
1071 pushCall(theKeys, $String(name));
1072 }
1073 }
1074 }
1075
1076 if (hasDontEnumBug) {
1077 var skipConstructor = equalsConstructorPrototypeIfNotBuggy(object);
1078 for (var j = 0; j < dontEnumsLength; j++) {
1079 var dontEnum = dontEnums[j];
1080 if (!(skipConstructor && dontEnum === 'constructor') && owns(object, dontEnum)) {
1081 pushCall(theKeys, dontEnum);
1082 }
1083 }
1084 }
1085 return theKeys;
1086 }
1087 });
1088
1089 var keysWorksWithArguments = $Object.keys && (function () {
1090 // Safari 5.0 bug
1091 return $Object.keys(arguments).length === 2;
1092 }(1, 2));
1093 var keysHasArgumentsLengthBug = $Object.keys && (function () {
1094 var argKeys = $Object.keys(arguments);
1095 return arguments.length !== 1 || argKeys.length !== 1 || argKeys[0] !== 1;
1096 }(1));
1097 var originalKeys = $Object.keys;
1098 defineProperties($Object, {
1099 keys: function keys(object) {
1100 if (isArguments(object)) {
1101 return originalKeys(arraySlice(object));
1102 } else {
1103 return originalKeys(object);
1104 }
1105 }
1106 }, !keysWorksWithArguments || keysHasArgumentsLengthBug);
1107
1108 //
1109 // Date
1110 // ====
1111 //
1112
1113 var hasNegativeMonthYearBug = new Date(-3509827329600292).getUTCMonth() !== 0;
1114 var aNegativeTestDate = new Date(-1509842289600292);
1115 var aPositiveTestDate = new Date(1449662400000);
1116 var hasToUTCStringFormatBug = aNegativeTestDate.toUTCString() !== 'Mon, 01 Jan -45875 11:59:59 GMT';
1117 var hasToDateStringFormatBug;
1118 var hasToStringFormatBug;
1119 var timeZoneOffset = aNegativeTestDate.getTimezoneOffset();
1120 if (timeZoneOffset < -720) {
1121 hasToDateStringFormatBug = aNegativeTestDate.toDateString() !== 'Tue Jan 02 -45875';
1122 hasToStringFormatBug = !(/^Thu Dec 10 2015 \d\d:\d\d:\d\d GMT[-\+]\d\d\d\d(?: |$)/).test(aPositiveTestDate.toString());
1123 } else {
1124 hasToDateStringFormatBug = aNegativeTestDate.toDateString() !== 'Mon Jan 01 -45875';
1125 hasToStringFormatBug = !(/^Wed Dec 09 2015 \d\d:\d\d:\d\d GMT[-\+]\d\d\d\d(?: |$)/).test(aPositiveTestDate.toString());
1126 }
1127
1128 var originalGetFullYear = call.bind(Date.prototype.getFullYear);
1129 var originalGetMonth = call.bind(Date.prototype.getMonth);
1130 var originalGetDate = call.bind(Date.prototype.getDate);
1131 var originalGetUTCFullYear = call.bind(Date.prototype.getUTCFullYear);
1132 var originalGetUTCMonth = call.bind(Date.prototype.getUTCMonth);
1133 var originalGetUTCDate = call.bind(Date.prototype.getUTCDate);
1134 var originalGetUTCDay = call.bind(Date.prototype.getUTCDay);
1135 var originalGetUTCHours = call.bind(Date.prototype.getUTCHours);
1136 var originalGetUTCMinutes = call.bind(Date.prototype.getUTCMinutes);
1137 var originalGetUTCSeconds = call.bind(Date.prototype.getUTCSeconds);
1138 var originalGetUTCMilliseconds = call.bind(Date.prototype.getUTCMilliseconds);
1139 var dayName = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
1140 var monthName = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
1141 var daysInMonth = function daysInMonth(month, year) {
1142 return originalGetDate(new Date(year, month, 0));
1143 };
1144
1145 defineProperties(Date.prototype, {
1146 getFullYear: function getFullYear() {
1147 if (!this || !(this instanceof Date)) {
1148 throw new TypeError('this is not a Date object.');
1149 }
1150 var year = originalGetFullYear(this);
1151 if (year < 0 && originalGetMonth(this) > 11) {
1152 return year + 1;
1153 }
1154 return year;
1155 },
1156 getMonth: function getMonth() {
1157 if (!this || !(this instanceof Date)) {
1158 throw new TypeError('this is not a Date object.');
1159 }
1160 var year = originalGetFullYear(this);
1161 var month = originalGetMonth(this);
1162 if (year < 0 && month > 11) {
1163 return 0;
1164 }
1165 return month;
1166 },
1167 getDate: function getDate() {
1168 if (!this || !(this instanceof Date)) {
1169 throw new TypeError('this is not a Date object.');
1170 }
1171 var year = originalGetFullYear(this);
1172 var month = originalGetMonth(this);
1173 var date = originalGetDate(this);
1174 if (year < 0 && month > 11) {
1175 if (month === 12) {
1176 return date;
1177 }
1178 var days = daysInMonth(0, year + 1);
1179 return (days - date) + 1;
1180 }
1181 return date;
1182 },
1183 getUTCFullYear: function getUTCFullYear() {
1184 if (!this || !(this instanceof Date)) {
1185 throw new TypeError('this is not a Date object.');
1186 }
1187 var year = originalGetUTCFullYear(this);
1188 if (year < 0 && originalGetUTCMonth(this) > 11) {
1189 return year + 1;
1190 }
1191 return year;
1192 },
1193 getUTCMonth: function getUTCMonth() {
1194 if (!this || !(this instanceof Date)) {
1195 throw new TypeError('this is not a Date object.');
1196 }
1197 var year = originalGetUTCFullYear(this);
1198 var month = originalGetUTCMonth(this);
1199 if (year < 0 && month > 11) {
1200 return 0;
1201 }
1202 return month;
1203 },
1204 getUTCDate: function getUTCDate() {
1205 if (!this || !(this instanceof Date)) {
1206 throw new TypeError('this is not a Date object.');
1207 }
1208 var year = originalGetUTCFullYear(this);
1209 var month = originalGetUTCMonth(this);
1210 var date = originalGetUTCDate(this);
1211 if (year < 0 && month > 11) {
1212 if (month === 12) {
1213 return date;
1214 }
1215 var days = daysInMonth(0, year + 1);
1216 return (days - date) + 1;
1217 }
1218 return date;
1219 }
1220 }, hasNegativeMonthYearBug);
1221
1222 defineProperties(Date.prototype, {
1223 toUTCString: function toUTCString() {
1224 if (!this || !(this instanceof Date)) {
1225 throw new TypeError('this is not a Date object.');
1226 }
1227 var day = originalGetUTCDay(this);
1228 var date = originalGetUTCDate(this);
1229 var month = originalGetUTCMonth(this);
1230 var year = originalGetUTCFullYear(this);
1231 var hour = originalGetUTCHours(this);
1232 var minute = originalGetUTCMinutes(this);
1233 var second = originalGetUTCSeconds(this);
1234 return dayName[day] + ', ' +
1235 (date < 10 ? '0' + date : date) + ' ' +
1236 monthName[month] + ' ' +
1237 year + ' ' +
1238 (hour < 10 ? '0' + hour : hour) + ':' +
1239 (minute < 10 ? '0' + minute : minute) + ':' +
1240 (second < 10 ? '0' + second : second) + ' GMT';
1241 }
1242 }, hasNegativeMonthYearBug || hasToUTCStringFormatBug);
1243
1244 // Opera 12 has `,`
1245 defineProperties(Date.prototype, {
1246 toDateString: function toDateString() {
1247 if (!this || !(this instanceof Date)) {
1248 throw new TypeError('this is not a Date object.');
1249 }
1250 var day = this.getDay();
1251 var date = this.getDate();
1252 var month = this.getMonth();
1253 var year = this.getFullYear();
1254 return dayName[day] + ' ' +
1255 monthName[month] + ' ' +
1256 (date < 10 ? '0' + date : date) + ' ' +
1257 year;
1258 }
1259 }, hasNegativeMonthYearBug || hasToDateStringFormatBug);
1260
1261 // can't use defineProperties here because of toString enumeration issue in IE <= 8
1262 if (hasNegativeMonthYearBug || hasToStringFormatBug) {
1263 Date.prototype.toString = function toString() {
1264 if (!this || !(this instanceof Date)) {
1265 throw new TypeError('this is not a Date object.');
1266 }
1267 var day = this.getDay();
1268 var date = this.getDate();
1269 var month = this.getMonth();
1270 var year = this.getFullYear();
1271 var hour = this.getHours();
1272 var minute = this.getMinutes();
1273 var second = this.getSeconds();
1274 var timezoneOffset = this.getTimezoneOffset();
1275 var hoursOffset = Math.floor(Math.abs(timezoneOffset) / 60);
1276 var minutesOffset = Math.floor(Math.abs(timezoneOffset) % 60);
1277 return dayName[day] + ' ' +
1278 monthName[month] + ' ' +
1279 (date < 10 ? '0' + date : date) + ' ' +
1280 year + ' ' +
1281 (hour < 10 ? '0' + hour : hour) + ':' +
1282 (minute < 10 ? '0' + minute : minute) + ':' +
1283 (second < 10 ? '0' + second : second) + ' GMT' +
1284 (timezoneOffset > 0 ? '-' : '+') +
1285 (hoursOffset < 10 ? '0' + hoursOffset : hoursOffset) +
1286 (minutesOffset < 10 ? '0' + minutesOffset : minutesOffset);
1287 };
1288 if (supportsDescriptors) {
1289 $Object.defineProperty(Date.prototype, 'toString', {
1290 configurable: true,
1291 enumerable: false,
1292 writable: true
1293 });
1294 }
1295 }
1296
1297 // ES5 15.9.5.43
1298 // http://es5.github.com/#x15.9.5.43
1299 // This function returns a String value represent the instance in time
1300 // represented by this Date object. The format of the String is the Date Time
1301 // string format defined in 15.9.1.15. All fields are present in the String.
1302 // The time zone is always UTC, denoted by the suffix Z. If the time value of
1303 // this object is not a finite Number a RangeError exception is thrown.
1304 var negativeDate = -62198755200000;
1305 var negativeYearString = '-000001';
1306 var hasNegativeDateBug = Date.prototype.toISOString && new Date(negativeDate).toISOString().indexOf(negativeYearString) === -1;
1307 var hasSafari51DateBug = Date.prototype.toISOString && new Date(-1).toISOString() !== '1969-12-31T23:59:59.999Z';
1308
1309 var getTime = call.bind(Date.prototype.getTime);
1310
1311 defineProperties(Date.prototype, {
1312 toISOString: function toISOString() {
1313 if (!isFinite(this) || !isFinite(getTime(this))) {
1314 // Adope Photoshop requires the second check.
1315 throw new RangeError('Date.prototype.toISOString called on non-finite value.');
1316 }
1317
1318 var year = originalGetUTCFullYear(this);
1319
1320 var month = originalGetUTCMonth(this);
1321 // see https://github.com/es-shims/es5-shim/issues/111
1322 year += Math.floor(month / 12);
1323 month = (month % 12 + 12) % 12;
1324
1325 // the date time string format is specified in 15.9.1.15.
1326 var result = [month + 1, originalGetUTCDate(this), originalGetUTCHours(this), originalGetUTCMinutes(this), originalGetUTCSeconds(this)];
1327 year = (
1328 (year < 0 ? '-' : (year > 9999 ? '+' : '')) +
1329 strSlice('00000' + Math.abs(year), (0 <= year && year <= 9999) ? -4 : -6)
1330 );
1331
1332 for (var i = 0; i < result.length; ++i) {
1333 // pad months, days, hours, minutes, and seconds to have two digits.
1334 result[i] = strSlice('00' + result[i], -2);
1335 }
1336 // pad milliseconds to have three digits.
1337 return (
1338 year + '-' + arraySlice(result, 0, 2).join('-') +
1339 'T' + arraySlice(result, 2).join(':') + '.' +
1340 strSlice('000' + originalGetUTCMilliseconds(this), -3) + 'Z'
1341 );
1342 }
1343 }, hasNegativeDateBug || hasSafari51DateBug);
1344
1345 // ES5 15.9.5.44
1346 // http://es5.github.com/#x15.9.5.44
1347 // This function provides a String representation of a Date object for use by
1348 // JSON.stringify (15.12.3).
1349 var dateToJSONIsSupported = (function () {
1350 try {
1351 return Date.prototype.toJSON &&
1352 new Date(NaN).toJSON() === null &&
1353 new Date(negativeDate).toJSON().indexOf(negativeYearString) !== -1 &&
1354 Date.prototype.toJSON.call({ // generic
1355 toISOString: function () { return true; }
1356 });
1357 } catch (e) {
1358 return false;
1359 }
1360 }());
1361 if (!dateToJSONIsSupported) {
1362 Date.prototype.toJSON = function toJSON(key) {
1363 // When the toJSON method is called with argument key, the following
1364 // steps are taken:
1365
1366 // 1. Let O be the result of calling ToObject, giving it the this
1367 // value as its argument.
1368 // 2. Let tv be ES.ToPrimitive(O, hint Number).
1369 var O = $Object(this);
1370 var tv = ES.ToPrimitive(O);
1371 // 3. If tv is a Number and is not finite, return null.
1372 if (typeof tv === 'number' && !isFinite(tv)) {
1373 return null;
1374 }
1375 // 4. Let toISO be the result of calling the [[Get]] internal method of
1376 // O with argument "toISOString".
1377 var toISO = O.toISOString;
1378 // 5. If IsCallable(toISO) is false, throw a TypeError exception.
1379 if (!isCallable(toISO)) {
1380 throw new TypeError('toISOString property is not callable');
1381 }
1382 // 6. Return the result of calling the [[Call]] internal method of
1383 // toISO with O as the this value and an empty argument list.
1384 return toISO.call(O);
1385
1386 // NOTE 1 The argument is ignored.
1387
1388 // NOTE 2 The toJSON function is intentionally generic; it does not
1389 // require that its this value be a Date object. Therefore, it can be
1390 // transferred to other kinds of objects for use as a method. However,
1391 // it does require that any such object have a toISOString method. An
1392 // object is free to use the argument key to filter its
1393 // stringification.
1394 };
1395 }
1396
1397 // ES5 15.9.4.2
1398 // http://es5.github.com/#x15.9.4.2
1399 // based on work shared by Daniel Friesen (dantman)
1400 // http://gist.github.com/303249
1401 var supportsExtendedYears = Date.parse('+033658-09-27T01:46:40.000Z') === 1e15;
1402 var acceptsInvalidDates = !isNaN(Date.parse('2012-04-04T24:00:00.500Z')) || !isNaN(Date.parse('2012-11-31T23:59:59.000Z')) || !isNaN(Date.parse('2012-12-31T23:59:60.000Z'));
1403 var doesNotParseY2KNewYear = isNaN(Date.parse('2000-01-01T00:00:00.000Z'));
1404 if (doesNotParseY2KNewYear || acceptsInvalidDates || !supportsExtendedYears) {
1405 // XXX global assignment won't work in embeddings that use
1406 // an alternate object for the context.
1407 /* global Date: true */
1408 /* eslint-disable no-undef */
1409 var maxSafeUnsigned32Bit = Math.pow(2, 31) - 1;
1410 var hasSafariSignedIntBug = isActualNaN(new Date(1970, 0, 1, 0, 0, 0, maxSafeUnsigned32Bit + 1).getTime());
1411 /* eslint-disable no-implicit-globals */
1412 Date = (function (NativeDate) {
1413 /* eslint-enable no-implicit-globals */
1414 /* eslint-enable no-undef */
1415 // Date.length === 7
1416 var DateShim = function Date(Y, M, D, h, m, s, ms) {
1417 var length = arguments.length;
1418 var date;
1419 if (this instanceof NativeDate) {
1420 var seconds = s;
1421 var millis = ms;
1422 if (hasSafariSignedIntBug && length >= 7 && ms > maxSafeUnsigned32Bit) {
1423 // work around a Safari 8/9 bug where it treats the seconds as signed
1424 var msToShift = Math.floor(ms / maxSafeUnsigned32Bit) * maxSafeUnsigned32Bit;
1425 var sToShift = Math.floor(msToShift / 1e3);
1426 seconds += sToShift;
1427 millis -= sToShift * 1e3;
1428 }
1429 date = length === 1 && $String(Y) === Y ? // isString(Y)
1430 // We explicitly pass it through parse:
1431 new NativeDate(DateShim.parse(Y)) :
1432 // We have to manually make calls depending on argument
1433 // length here
1434 length >= 7 ? new NativeDate(Y, M, D, h, m, seconds, millis) :
1435 length >= 6 ? new NativeDate(Y, M, D, h, m, seconds) :
1436 length >= 5 ? new NativeDate(Y, M, D, h, m) :
1437 length >= 4 ? new NativeDate(Y, M, D, h) :
1438 length >= 3 ? new NativeDate(Y, M, D) :
1439 length >= 2 ? new NativeDate(Y, M) :
1440 length >= 1 ? new NativeDate(Y instanceof NativeDate ? +Y : Y) :
1441 new NativeDate();
1442 } else {
1443 date = NativeDate.apply(this, arguments);
1444 }
1445 if (!isPrimitive(date)) {
1446 // Prevent mixups with unfixed Date object
1447 defineProperties(date, { constructor: DateShim }, true);
1448 }
1449 return date;
1450 };
1451
1452 // 15.9.1.15 Date Time String Format.
1453 var isoDateExpression = new RegExp('^' +
1454 '(\\d{4}|[+-]\\d{6})' + // four-digit year capture or sign +
1455 // 6-digit extended year
1456 '(?:-(\\d{2})' + // optional month capture
1457 '(?:-(\\d{2})' + // optional day capture
1458 '(?:' + // capture hours:minutes:seconds.milliseconds
1459 'T(\\d{2})' + // hours capture
1460 ':(\\d{2})' + // minutes capture
1461 '(?:' + // optional :seconds.milliseconds
1462 ':(\\d{2})' + // seconds capture
1463 '(?:(\\.\\d{1,}))?' + // milliseconds capture
1464 ')?' +
1465 '(' + // capture UTC offset component
1466 'Z|' + // UTC capture
1467 '(?:' + // offset specifier +/-hours:minutes
1468 '([-+])' + // sign capture
1469 '(\\d{2})' + // hours offset capture
1470 ':(\\d{2})' + // minutes offset capture
1471 ')' +
1472 ')?)?)?)?' +
1473 '$');
1474
1475 var months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365];
1476
1477 var dayFromMonth = function dayFromMonth(year, month) {
1478 var t = month > 1 ? 1 : 0;
1479 return (
1480 months[month] +
1481 Math.floor((year - 1969 + t) / 4) -
1482 Math.floor((year - 1901 + t) / 100) +
1483 Math.floor((year - 1601 + t) / 400) +
1484 365 * (year - 1970)
1485 );
1486 };
1487
1488 var toUTC = function toUTC(t) {
1489 var s = 0;
1490 var ms = t;
1491 if (hasSafariSignedIntBug && ms > maxSafeUnsigned32Bit) {
1492 // work around a Safari 8/9 bug where it treats the seconds as signed
1493 var msToShift = Math.floor(ms / maxSafeUnsigned32Bit) * maxSafeUnsigned32Bit;
1494 var sToShift = Math.floor(msToShift / 1e3);
1495 s += sToShift;
1496 ms -= sToShift * 1e3;
1497 }
1498 return $Number(new NativeDate(1970, 0, 1, 0, 0, s, ms));
1499 };
1500
1501 // Copy any custom methods a 3rd party library may have added
1502 for (var key in NativeDate) {
1503 if (owns(NativeDate, key)) {
1504 DateShim[key] = NativeDate[key];
1505 }
1506 }
1507
1508 // Copy "native" methods explicitly; they may be non-enumerable
1509 defineProperties(DateShim, {
1510 now: NativeDate.now,
1511 UTC: NativeDate.UTC
1512 }, true);
1513 DateShim.prototype = NativeDate.prototype;
1514 defineProperties(DateShim.prototype, {
1515 constructor: DateShim
1516 }, true);
1517
1518 // Upgrade Date.parse to handle simplified ISO 8601 strings
1519 var parseShim = function parse(string) {
1520 var match = isoDateExpression.exec(string);
1521 if (match) {
1522 // parse months, days, hours, minutes, seconds, and milliseconds
1523 // provide default values if necessary
1524 // parse the UTC offset component
1525 var year = $Number(match[1]),
1526 month = $Number(match[2] || 1) - 1,
1527 day = $Number(match[3] || 1) - 1,
1528 hour = $Number(match[4] || 0),
1529 minute = $Number(match[5] || 0),
1530 second = $Number(match[6] || 0),
1531 millisecond = Math.floor($Number(match[7] || 0) * 1000),
1532 // When time zone is missed, local offset should be used
1533 // (ES 5.1 bug)
1534 // see https://bugs.ecmascript.org/show_bug.cgi?id=112
1535 isLocalTime = Boolean(match[4] && !match[8]),
1536 signOffset = match[9] === '-' ? 1 : -1,
1537 hourOffset = $Number(match[10] || 0),
1538 minuteOffset = $Number(match[11] || 0),
1539 result;
1540 var hasMinutesOrSecondsOrMilliseconds = minute > 0 || second > 0 || millisecond > 0;
1541 if (
1542 hour < (hasMinutesOrSecondsOrMilliseconds ? 24 : 25) &&
1543 minute < 60 && second < 60 && millisecond < 1000 &&
1544 month > -1 && month < 12 && hourOffset < 24 &&
1545 minuteOffset < 60 && // detect invalid offsets
1546 day > -1 &&
1547 day < (dayFromMonth(year, month + 1) - dayFromMonth(year, month))
1548 ) {
1549 result = (
1550 (dayFromMonth(year, month) + day) * 24 +
1551 hour +
1552 hourOffset * signOffset
1553 ) * 60;
1554 result = (
1555 (result + minute + minuteOffset * signOffset) * 60 +
1556 second
1557 ) * 1000 + millisecond;
1558 if (isLocalTime) {
1559 result = toUTC(result);
1560 }
1561 if (-8.64e15 <= result && result <= 8.64e15) {
1562 return result;
1563 }
1564 }
1565 return NaN;
1566 }
1567 return NativeDate.parse.apply(this, arguments);
1568 };
1569 defineProperties(DateShim, { parse: parseShim });
1570
1571 return DateShim;
1572 }(Date));
1573 /* global Date: false */
1574 }
1575
1576 // ES5 15.9.4.4
1577 // http://es5.github.com/#x15.9.4.4
1578 if (!Date.now) {
1579 Date.now = function now() {
1580 return new Date().getTime();
1581 };
1582 }
1583
1584 //
1585 // Number
1586 // ======
1587 //
1588
1589 // ES5.1 15.7.4.5
1590 // http://es5.github.com/#x15.7.4.5
1591 var hasToFixedBugs = NumberPrototype.toFixed && (
1592 (0.00008).toFixed(3) !== '0.000' ||
1593 (0.9).toFixed(0) !== '1' ||
1594 (1.255).toFixed(2) !== '1.25' ||
1595 (1000000000000000128).toFixed(0) !== '1000000000000000128'
1596 );
1597
1598 var toFixedHelpers = {
1599 base: 1e7,
1600 size: 6,
1601 data: [0, 0, 0, 0, 0, 0],
1602 multiply: function multiply(n, c) {
1603 var i = -1;
1604 var c2 = c;
1605 while (++i < toFixedHelpers.size) {
1606 c2 += n * toFixedHelpers.data[i];
1607 toFixedHelpers.data[i] = c2 % toFixedHelpers.base;
1608 c2 = Math.floor(c2 / toFixedHelpers.base);
1609 }
1610 },
1611 divide: function divide(n) {
1612 var i = toFixedHelpers.size;
1613 var c = 0;
1614 while (--i >= 0) {
1615 c += toFixedHelpers.data[i];
1616 toFixedHelpers.data[i] = Math.floor(c / n);
1617 c = (c % n) * toFixedHelpers.base;
1618 }
1619 },
1620 numToString: function numToString() {
1621 var i = toFixedHelpers.size;
1622 var s = '';
1623 while (--i >= 0) {
1624 if (s !== '' || i === 0 || toFixedHelpers.data[i] !== 0) {
1625 var t = $String(toFixedHelpers.data[i]);
1626 if (s === '') {
1627 s = t;
1628 } else {
1629 s += strSlice('0000000', 0, 7 - t.length) + t;
1630 }
1631 }
1632 }
1633 return s;
1634 },
1635 pow: function pow(x, n, acc) {
1636 return (n === 0 ? acc : (n % 2 === 1 ? pow(x, n - 1, acc * x) : pow(x * x, n / 2, acc)));
1637 },
1638 log: function log(x) {
1639 var n = 0;
1640 var x2 = x;
1641 while (x2 >= 4096) {
1642 n += 12;
1643 x2 /= 4096;
1644 }
1645 while (x2 >= 2) {
1646 n += 1;
1647 x2 /= 2;
1648 }
1649 return n;
1650 }
1651 };
1652
1653 var toFixedShim = function toFixed(fractionDigits) {
1654 var f, x, s, m, e, z, j, k;
1655
1656 // Test for NaN and round fractionDigits down
1657 f = $Number(fractionDigits);
1658 f = isActualNaN(f) ? 0 : Math.floor(f);
1659
1660 if (f < 0 || f > 20) {
1661 throw new RangeError('Number.toFixed called with invalid number of decimals');
1662 }
1663
1664 x = $Number(this);
1665
1666 if (isActualNaN(x)) {
1667 return 'NaN';
1668 }
1669
1670 // If it is too big or small, return the string value of the number
1671 if (x <= -1e21 || x >= 1e21) {
1672 return $String(x);
1673 }
1674
1675 s = '';
1676
1677 if (x < 0) {
1678 s = '-';
1679 x = -x;
1680 }
1681
1682 m = '0';
1683
1684 if (x > 1e-21) {
1685 // 1e-21 < x < 1e21
1686 // -70 < log2(x) < 70
1687 e = toFixedHelpers.log(x * toFixedHelpers.pow(2, 69, 1)) - 69;
1688 z = (e < 0 ? x * toFixedHelpers.pow(2, -e, 1) : x / toFixedHelpers.pow(2, e, 1));
1689 z *= 0x10000000000000; // Math.pow(2, 52);
1690 e = 52 - e;
1691
1692 // -18 < e < 122
1693 // x = z / 2 ^ e
1694 if (e > 0) {
1695 toFixedHelpers.multiply(0, z);
1696 j = f;
1697
1698 while (j >= 7) {
1699 toFixedHelpers.multiply(1e7, 0);
1700 j -= 7;
1701 }
1702
1703 toFixedHelpers.multiply(toFixedHelpers.pow(10, j, 1), 0);
1704 j = e - 1;
1705
1706 while (j >= 23) {
1707 toFixedHelpers.divide(1 << 23);
1708 j -= 23;
1709 }
1710
1711 toFixedHelpers.divide(1 << j);
1712 toFixedHelpers.multiply(1, 1);
1713 toFixedHelpers.divide(2);
1714 m = toFixedHelpers.numToString();
1715 } else {
1716 toFixedHelpers.multiply(0, z);
1717 toFixedHelpers.multiply(1 << (-e), 0);
1718 m = toFixedHelpers.numToString() + strSlice('0.00000000000000000000', 2, 2 + f);
1719 }
1720 }
1721
1722 if (f > 0) {
1723 k = m.length;
1724
1725 if (k <= f) {
1726 m = s + strSlice('0.0000000000000000000', 0, f - k + 2) + m;
1727 } else {
1728 m = s + strSlice(m, 0, k - f) + '.' + strSlice(m, k - f);
1729 }
1730 } else {
1731 m = s + m;
1732 }
1733
1734 return m;
1735 };
1736 defineProperties(NumberPrototype, { toFixed: toFixedShim }, hasToFixedBugs);
1737
1738 var hasToPrecisionUndefinedBug = (function () {
1739 try {
1740 return 1.0.toPrecision(undefined) === '1';
1741 } catch (e) {
1742 return true;
1743 }
1744 }());
1745 var originalToPrecision = NumberPrototype.toPrecision;
1746 defineProperties(NumberPrototype, {
1747 toPrecision: function toPrecision(precision) {
1748 return typeof precision === 'undefined' ? originalToPrecision.call(this) : originalToPrecision.call(this, precision);
1749 }
1750 }, hasToPrecisionUndefinedBug);
1751
1752 //
1753 // String
1754 // ======
1755 //
1756
1757 // ES5 15.5.4.14
1758 // http://es5.github.com/#x15.5.4.14
1759
1760 // [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]
1761 // Many browsers do not split properly with regular expressions or they
1762 // do not perform the split correctly under obscure conditions.
1763 // See http://blog.stevenlevithan.com/archives/cross-browser-split
1764 // I've tested in many browsers and this seems to cover the deviant ones:
1765 // 'ab'.split(/(?:ab)*/) should be ["", ""], not [""]
1766 // '.'.split(/(.?)(.?)/) should be ["", ".", "", ""], not ["", ""]
1767 // 'tesst'.split(/(s)*/) should be ["t", undefined, "e", "s", "t"], not
1768 // [undefined, "t", undefined, "e", ...]
1769 // ''.split(/.?/) should be [], not [""]
1770 // '.'.split(/()()/) should be ["."], not ["", "", "."]
1771
1772 if (
1773 'ab'.split(/(?:ab)*/).length !== 2 ||
1774 '.'.split(/(.?)(.?)/).length !== 4 ||
1775 'tesst'.split(/(s)*/)[1] === 't' ||
1776 'test'.split(/(?:)/, -1).length !== 4 ||
1777 ''.split(/.?/).length ||
1778 '.'.split(/()()/).length > 1
1779 ) {
1780 (function () {
1781 var compliantExecNpcg = typeof (/()??/).exec('')[1] === 'undefined'; // NPCG: nonparticipating capturing group
1782 var maxSafe32BitInt = Math.pow(2, 32) - 1;
1783
1784 StringPrototype.split = function (separator, limit) {
1785 var string = String(this);
1786 if (typeof separator === 'undefined' && limit === 0) {
1787 return [];
1788 }
1789
1790 // If `separator` is not a regex, use native split
1791 if (!isRegex(separator)) {
1792 return strSplit(this, separator, limit);
1793 }
1794
1795 var output = [];
1796 var flags = (separator.ignoreCase ? 'i' : '') +
1797 (separator.multiline ? 'm' : '') +
1798 (separator.unicode ? 'u' : '') + // in ES6
1799 (separator.sticky ? 'y' : ''), // Firefox 3+ and ES6
1800 lastLastIndex = 0,
1801 // Make `global` and avoid `lastIndex` issues by working with a copy
1802 separator2, match, lastIndex, lastLength;
1803 var separatorCopy = new RegExp(separator.source, flags + 'g');
1804 if (!compliantExecNpcg) {
1805 // Doesn't need flags gy, but they don't hurt
1806 separator2 = new RegExp('^' + separatorCopy.source + '$(?!\\s)', flags);
1807 }
1808 /* Values for `limit`, per the spec:
1809 * If undefined: 4294967295 // maxSafe32BitInt
1810 * If 0, Infinity, or NaN: 0
1811 * If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
1812 * If negative number: 4294967296 - Math.floor(Math.abs(limit))
1813 * If other: Type-convert, then use the above rules
1814 */
1815 var splitLimit = typeof limit === 'undefined' ? maxSafe32BitInt : ES.ToUint32(limit);
1816 match = separatorCopy.exec(string);
1817 while (match) {
1818 // `separatorCopy.lastIndex` is not reliable cross-browser
1819 lastIndex = match.index + match[0].length;
1820 if (lastIndex > lastLastIndex) {
1821 pushCall(output, strSlice(string, lastLastIndex, match.index));
1822 // Fix browsers whose `exec` methods don't consistently return `undefined` for
1823 // nonparticipating capturing groups
1824 if (!compliantExecNpcg && match.length > 1) {
1825 /* eslint-disable no-loop-func */
1826 match[0].replace(separator2, function () {
1827 for (var i = 1; i < arguments.length - 2; i++) {
1828 if (typeof arguments[i] === 'undefined') {
1829 match[i] = void 0;
1830 }
1831 }
1832 });
1833 /* eslint-enable no-loop-func */
1834 }
1835 if (match.length > 1 && match.index < string.length) {
1836 array_push.apply(output, arraySlice(match, 1));
1837 }
1838 lastLength = match[0].length;
1839 lastLastIndex = lastIndex;
1840 if (output.length >= splitLimit) {
1841 break;
1842 }
1843 }
1844 if (separatorCopy.lastIndex === match.index) {
1845 separatorCopy.lastIndex++; // Avoid an infinite loop
1846 }
1847 match = separatorCopy.exec(string);
1848 }
1849 if (lastLastIndex === string.length) {
1850 if (lastLength || !separatorCopy.test('')) {
1851 pushCall(output, '');
1852 }
1853 } else {
1854 pushCall(output, strSlice(string, lastLastIndex));
1855 }
1856 return output.length > splitLimit ? arraySlice(output, 0, splitLimit) : output;
1857 };
1858 }());
1859
1860 // [bugfix, chrome]
1861 // If separator is undefined, then the result array contains just one String,
1862 // which is the this value (converted to a String). If limit is not undefined,
1863 // then the output array is truncated so that it contains no more than limit
1864 // elements.
1865 // "0".split(undefined, 0) -> []
1866 } else if ('0'.split(void 0, 0).length) {
1867 StringPrototype.split = function split(separator, limit) {
1868 if (typeof separator === 'undefined' && limit === 0) {
1869 return [];
1870 }
1871 return strSplit(this, separator, limit);
1872 };
1873 }
1874
1875 var str_replace = StringPrototype.replace;
1876 var replaceReportsGroupsCorrectly = (function () {
1877 var groups = [];
1878 'x'.replace(/x(.)?/g, function (match, group) {
1879 pushCall(groups, group);
1880 });
1881 return groups.length === 1 && typeof groups[0] === 'undefined';
1882 }());
1883
1884 if (!replaceReportsGroupsCorrectly) {
1885 StringPrototype.replace = function replace(searchValue, replaceValue) {
1886 var isFn = isCallable(replaceValue);
1887 var hasCapturingGroups = isRegex(searchValue) && (/\)[*?]/).test(searchValue.source);
1888 if (!isFn || !hasCapturingGroups) {
1889 return str_replace.call(this, searchValue, replaceValue);
1890 } else {
1891 var wrappedReplaceValue = function (match) {
1892 var length = arguments.length;
1893 var originalLastIndex = searchValue.lastIndex;
1894 searchValue.lastIndex = 0;
1895 var args = searchValue.exec(match) || [];
1896 searchValue.lastIndex = originalLastIndex;
1897 pushCall(args, arguments[length - 2], arguments[length - 1]);
1898 return replaceValue.apply(this, args);
1899 };
1900 return str_replace.call(this, searchValue, wrappedReplaceValue);
1901 }
1902 };
1903 }
1904
1905 // ECMA-262, 3rd B.2.3
1906 // Not an ECMAScript standard, although ECMAScript 3rd Edition has a
1907 // non-normative section suggesting uniform semantics and it should be
1908 // normalized across all browsers
1909 // [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE
1910 var string_substr = StringPrototype.substr;
1911 var hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b';
1912 defineProperties(StringPrototype, {
1913 substr: function substr(start, length) {
1914 var normalizedStart = start;
1915 if (start < 0) {
1916 normalizedStart = max(this.length + start, 0);
1917 }
1918 return string_substr.call(this, normalizedStart, length);
1919 }
1920 }, hasNegativeSubstrBug);
1921
1922 // ES5 15.5.4.20
1923 // whitespace from: http://es5.github.io/#x15.5.4.20
1924 var ws = '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003' +
1925 '\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028' +
1926 '\u2029\uFEFF';
1927 var zeroWidth = '\u200b';
1928 var wsRegexChars = '[' + ws + ']';
1929 var trimBeginRegexp = new RegExp('^' + wsRegexChars + wsRegexChars + '*');
1930 var trimEndRegexp = new RegExp(wsRegexChars + wsRegexChars + '*$');
1931 var hasTrimWhitespaceBug = StringPrototype.trim && (ws.trim() || !zeroWidth.trim());
1932 defineProperties(StringPrototype, {
1933 // http://blog.stevenlevithan.com/archives/faster-trim-javascript
1934 // http://perfectionkills.com/whitespace-deviations/
1935 trim: function trim() {
1936 if (typeof this === 'undefined' || this === null) {
1937 throw new TypeError("can't convert " + this + ' to object');
1938 }
1939 return $String(this).replace(trimBeginRegexp, '').replace(trimEndRegexp, '');
1940 }
1941 }, hasTrimWhitespaceBug);
1942 var trim = call.bind(String.prototype.trim);
1943
1944 var hasLastIndexBug = StringPrototype.lastIndexOf && 'abcあい'.lastIndexOf('あい', 2) !== -1;
1945 defineProperties(StringPrototype, {
1946 lastIndexOf: function lastIndexOf(searchString) {
1947 if (typeof this === 'undefined' || this === null) {
1948 throw new TypeError("can't convert " + this + ' to object');
1949 }
1950 var S = $String(this);
1951 var searchStr = $String(searchString);
1952 var numPos = arguments.length > 1 ? $Number(arguments[1]) : NaN;
1953 var pos = isActualNaN(numPos) ? Infinity : ES.ToInteger(numPos);
1954 var start = min(max(pos, 0), S.length);
1955 var searchLen = searchStr.length;
1956 var k = start + searchLen;
1957 while (k > 0) {
1958 k = max(0, k - searchLen);
1959 var index = strIndexOf(strSlice(S, k, start + searchLen), searchStr);
1960 if (index !== -1) {
1961 return k + index;
1962 }
1963 }
1964 return -1;
1965 }
1966 }, hasLastIndexBug);
1967
1968 var originalLastIndexOf = StringPrototype.lastIndexOf;
1969 defineProperties(StringPrototype, {
1970 lastIndexOf: function lastIndexOf(searchString) {
1971 return originalLastIndexOf.apply(this, arguments);
1972 }
1973 }, StringPrototype.lastIndexOf.length !== 1);
1974
1975 // ES-5 15.1.2.2
1976 /* eslint-disable radix */
1977 if (parseInt(ws + '08') !== 8 || parseInt(ws + '0x16') !== 22) {
1978 /* eslint-enable radix */
1979 /* global parseInt: true */
1980 parseInt = (function (origParseInt) {
1981 var hexRegex = /^[\-+]?0[xX]/;
1982 return function parseInt(str, radix) {
1983 var string = trim(String(str));
1984 var defaultedRadix = $Number(radix) || (hexRegex.test(string) ? 16 : 10);
1985 return origParseInt(string, defaultedRadix);
1986 };
1987 }(parseInt));
1988 }
1989
1990 // https://es5.github.io/#x15.1.2.3
1991 if (1 / parseFloat('-0') !== -Infinity) {
1992 /* global parseFloat: true */
1993 parseFloat = (function (origParseFloat) {
1994 return function parseFloat(string) {
1995 var inputString = trim(String(string));
1996 var result = origParseFloat(inputString);
1997 return result === 0 && strSlice(inputString, 0, 1) === '-' ? -0 : result;
1998 };
1999 }(parseFloat));
2000 }
2001
2002 if (String(new RangeError('test')) !== 'RangeError: test') {
2003 var errorToStringShim = function toString() {
2004 if (typeof this === 'undefined' || this === null) {
2005 throw new TypeError("can't convert " + this + ' to object');
2006 }
2007 var name = this.name;
2008 if (typeof name === 'undefined') {
2009 name = 'Error';
2010 } else if (typeof name !== 'string') {
2011 name = $String(name);
2012 }
2013 var msg = this.message;
2014 if (typeof msg === 'undefined') {
2015 msg = '';
2016 } else if (typeof msg !== 'string') {
2017 msg = $String(msg);
2018 }
2019 if (!name) {
2020 return msg;
2021 }
2022 if (!msg) {
2023 return name;
2024 }
2025 return name + ': ' + msg;
2026 };
2027 // can't use defineProperties here because of toString enumeration issue in IE <= 8
2028 Error.prototype.toString = errorToStringShim;
2029 }
2030
2031 if (supportsDescriptors) {
2032 var ensureNonEnumerable = function (obj, prop) {
2033 if (isEnum(obj, prop)) {
2034 var desc = Object.getOwnPropertyDescriptor(obj, prop);
2035 if (desc.configurable) {
2036 desc.enumerable = false;
2037 Object.defineProperty(obj, prop, desc);
2038 }
2039 }
2040 };
2041 ensureNonEnumerable(Error.prototype, 'message');
2042 if (Error.prototype.message !== '') {
2043 Error.prototype.message = '';
2044 }
2045 ensureNonEnumerable(Error.prototype, 'name');
2046 }
2047
2048 if (String(/a/mig) !== '/a/gim') {
2049 var regexToString = function toString() {
2050 var str = '/' + this.source + '/';
2051 if (this.global) {
2052 str += 'g';
2053 }
2054 if (this.ignoreCase) {
2055 str += 'i';
2056 }
2057 if (this.multiline) {
2058 str += 'm';
2059 }
2060 return str;
2061 };
2062 // can't use defineProperties here because of toString enumeration issue in IE <= 8
2063 RegExp.prototype.toString = regexToString;
2064 }
2065}));