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- // https://github.com/kriskowal/es5-shim
- // Copyright 2009-2012 by contributors, MIT License
- define(function(require, exports, module) {
- /*
- * 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/
- */
- //
- // Function
- // ========
- //
- // ES-5 15.3.4.5
- // http://es5.github.com/#x15.3.4.5
- function Empty() {}
- if (!Function.prototype.bind) {
- Function.prototype.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 (typeof target != "function") {
- 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 = 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 = 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(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(slice.call(arguments))
- );
- }
- };
- if(target.prototype) {
- Empty.prototype = target.prototype;
- bound.prototype = new Empty();
- // Clean up dangling references.
- Empty.prototype = null;
- }
- // XXX bound.length is never writable, so don't even try
- //
- // 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.
- // 17. Set the attributes of the length own property of F to the values
- // specified in 15.3.5.1.
- // 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;
- };
- }
- // Shortcut to an often accessed properties, in order to avoid multiple
- // dereference that costs universally.
- // _Please note: Shortcuts are defined after `Function.prototype.bind` as we
- // us it in defining shortcuts.
- var call = Function.prototype.call;
- var prototypeOfArray = Array.prototype;
- var prototypeOfObject = Object.prototype;
- var slice = prototypeOfArray.slice;
- // Having a toString local variable name breaks in Opera so use _toString.
- var _toString = call.bind(prototypeOfObject.toString);
- var owns = call.bind(prototypeOfObject.hasOwnProperty);
- // If JS engine supports accessors creating shortcuts.
- var defineGetter;
- var defineSetter;
- var lookupGetter;
- var lookupSetter;
- var supportsAccessors;
- if ((supportsAccessors = owns(prototypeOfObject, "__defineGetter__"))) {
- defineGetter = call.bind(prototypeOfObject.__defineGetter__);
- defineSetter = call.bind(prototypeOfObject.__defineSetter__);
- lookupGetter = call.bind(prototypeOfObject.__lookupGetter__);
- lookupSetter = call.bind(prototypeOfObject.__lookupSetter__);
- }
- //
- // Array
- // =====
- //
- // ES5 15.4.4.12
- // http://es5.github.com/#x15.4.4.12
- // Default value for second param
- // [bugfix, ielt9, old browsers]
- // IE < 9 bug: [1,2].splice(0).join("") == "" but should be "12"
- if ([1,2].splice(0).length != 2) {
- if(function() { // test IE < 9 to splice bug - see issue #138
- function makeArray(l) {
- var a = new Array(l+2);
- a[0] = a[1] = 0;
- return a;
- }
- var array = [], lengthBefore;
-
- array.splice.apply(array, makeArray(20));
- array.splice.apply(array, makeArray(26));
- lengthBefore = array.length; //46
- array.splice(5, 0, "XXX"); // add one element
- lengthBefore + 1 == array.length
- if (lengthBefore + 1 == array.length) {
- return true;// has right splice implementation without bugs
- }
- // else {
- // IE8 bug
- // }
- }()) {//IE 6/7
- var array_splice = Array.prototype.splice;
- Array.prototype.splice = function(start, deleteCount) {
- if (!arguments.length) {
- return [];
- } else {
- return array_splice.apply(this, [
- start === void 0 ? 0 : start,
- deleteCount === void 0 ? (this.length - start) : deleteCount
- ].concat(slice.call(arguments, 2)))
- }
- };
- } else {//IE8
- // taken from http://docs.sencha.com/ext-js/4-1/source/Array2.html
- Array.prototype.splice = function(pos, removeCount){
- var length = this.length;
- if (pos > 0) {
- if (pos > length)
- pos = length;
- } else if (pos == void 0) {
- pos = 0;
- } else if (pos < 0) {
- pos = Math.max(length + pos, 0);
- }
- if (!(pos+removeCount < length))
- removeCount = length - pos;
- var removed = this.slice(pos, pos+removeCount);
- var insert = slice.call(arguments, 2);
- var add = insert.length;
- // we try to use Array.push when we can for efficiency...
- if (pos === length) {
- if (add) {
- this.push.apply(this, insert);
- }
- } else {
- var remove = Math.min(removeCount, length - pos);
- var tailOldPos = pos + remove;
- var tailNewPos = tailOldPos + add - remove;
- var tailCount = length - tailOldPos;
- var lengthAfterRemove = length - remove;
- if (tailNewPos < tailOldPos) { // case A
- for (var i = 0; i < tailCount; ++i) {
- this[tailNewPos+i] = this[tailOldPos+i];
- }
- } else if (tailNewPos > tailOldPos) { // case B
- for (i = tailCount; i--; ) {
- this[tailNewPos+i] = this[tailOldPos+i];
- }
- } // else, add == remove (nothing to do)
- if (add && pos === lengthAfterRemove) {
- this.length = lengthAfterRemove; // truncate array
- this.push.apply(this, insert);
- } else {
- this.length = lengthAfterRemove + add; // reserves space
- for (i = 0; i < add; ++i) {
- this[pos+i] = insert[i];
- }
- }
- }
- return removed;
- };
- }
- }
- // ES5 15.4.3.2
- // http://es5.github.com/#x15.4.3.2
- // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
- if (!Array.isArray) {
- Array.isArray = function isArray(obj) {
- return _toString(obj) == "[object Array]";
- };
- }
- // 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"),
- splitString = boxedString[0] != "a" || !(0 in boxedString);
- if (!Array.prototype.forEach) {
- Array.prototype.forEach = function forEach(fun /*, thisp*/) {
- var object = toObject(this),
- self = splitString && _toString(this) == "[object String]" ?
- 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 (_toString(fun) != "[object Function]") {
- 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);
- }
- }
- };
- }
- // 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
- if (!Array.prototype.map) {
- Array.prototype.map = function map(fun /*, thisp*/) {
- var object = toObject(this),
- self = splitString && _toString(this) == "[object String]" ?
- 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 (_toString(fun) != "[object Function]") {
- 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;
- };
- }
- // 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
- if (!Array.prototype.filter) {
- Array.prototype.filter = function filter(fun /*, thisp */) {
- var object = toObject(this),
- self = splitString && _toString(this) == "[object String]" ?
- 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 (_toString(fun) != "[object Function]") {
- 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;
- };
- }
- // ES5 15.4.4.16
- // http://es5.github.com/#x15.4.4.16
- // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every
- if (!Array.prototype.every) {
- Array.prototype.every = function every(fun /*, thisp */) {
- var object = toObject(this),
- self = splitString && _toString(this) == "[object String]" ?
- this.split("") :
- object,
- length = self.length >>> 0,
- thisp = arguments[1];
- // If no callback function or if callback is not a callable function
- if (_toString(fun) != "[object Function]") {
- 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;
- };
- }
- // ES5 15.4.4.17
- // http://es5.github.com/#x15.4.4.17
- // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some
- if (!Array.prototype.some) {
- Array.prototype.some = function some(fun /*, thisp */) {
- var object = toObject(this),
- self = splitString && _toString(this) == "[object String]" ?
- this.split("") :
- object,
- length = self.length >>> 0,
- thisp = arguments[1];
- // If no callback function or if callback is not a callable function
- if (_toString(fun) != "[object Function]") {
- 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;
- };
- }
- // 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
- if (!Array.prototype.reduce) {
- Array.prototype.reduce = function reduce(fun /*, initial*/) {
- var object = toObject(this),
- self = splitString && _toString(this) == "[object String]" ?
- this.split("") :
- object,
- length = self.length >>> 0;
- // If no callback function or if callback is not a callable function
- if (_toString(fun) != "[object Function]") {
- 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;
- };
- }
- // 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
- if (!Array.prototype.reduceRight) {
- Array.prototype.reduceRight = function reduceRight(fun /*, initial*/) {
- var object = toObject(this),
- self = splitString && _toString(this) == "[object String]" ?
- this.split("") :
- object,
- length = self.length >>> 0;
- // If no callback function or if callback is not a callable function
- if (_toString(fun) != "[object Function]") {
- 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);
- }
- do {
- if (i in this) {
- result = fun.call(void 0, result, self[i], i, object);
- }
- } while (i--);
- return result;
- };
- }
- // ES5 15.4.4.14
- // http://es5.github.com/#x15.4.4.14
- // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
- if (!Array.prototype.indexOf || ([0, 1].indexOf(1, 2) != -1)) {
- Array.prototype.indexOf = function indexOf(sought /*, fromIndex */ ) {
- var self = splitString && _toString(this) == "[object String]" ?
- this.split("") :
- 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;
- };
- }
- // ES5 15.4.4.15
- // http://es5.github.com/#x15.4.4.15
- // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf
- if (!Array.prototype.lastIndexOf || ([0, 1].lastIndexOf(0, -3) != -1)) {
- Array.prototype.lastIndexOf = function lastIndexOf(sought /*, fromIndex */) {
- var self = splitString && _toString(this) == "[object String]" ?
- this.split("") :
- 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;
- };
- }
- //
- // Object
- // ======
- //
- // ES5 15.2.3.2
- // http://es5.github.com/#x15.2.3.2
- if (!Object.getPrototypeOf) {
- // https://github.com/kriskowal/es5-shim/issues#issue/2
- // http://ejohn.org/blog/objectgetprototypeof/
- // recommended by fschaefer on github
- Object.getPrototypeOf = function getPrototypeOf(object) {
- return object.__proto__ || (
- object.constructor ?
- object.constructor.prototype :
- prototypeOfObject
- );
- };
- }
- // ES5 15.2.3.3
- // http://es5.github.com/#x15.2.3.3
- if (!Object.getOwnPropertyDescriptor) {
- var ERR_NON_OBJECT = "Object.getOwnPropertyDescriptor called on a " +
- "non-object: ";
- Object.getOwnPropertyDescriptor = function getOwnPropertyDescriptor(object, property) {
- if ((typeof object != "object" && typeof object != "function") || object === null)
- throw new TypeError(ERR_NON_OBJECT + object);
- // If object does not owns property return undefined immediately.
- if (!owns(object, property))
- return;
- var descriptor, getter, setter;
- // If object has a property then it's for sure both `enumerable` and
- // `configurable`.
- descriptor = { enumerable: true, configurable: true };
- // If JS engine supports accessor properties then property may be a
- // getter or setter.
- if (supportsAccessors) {
- // Unfortunately `__lookupGetter__` will return a getter even
- // if object has own non getter property along with a same named
- // inherited getter. To avoid misbehavior we temporary remove
- // `__proto__` so that `__lookupGetter__` will return getter only
- // if it's owned by an object.
- var prototype = object.__proto__;
- object.__proto__ = prototypeOfObject;
- var getter = lookupGetter(object, property);
- var setter = lookupSetter(object, property);
- // Once we have getter and setter we can put values back.
- object.__proto__ = prototype;
- if (getter || setter) {
- if (getter) descriptor.get = getter;
- if (setter) descriptor.set = setter;
- // If it was accessor property we're done and return here
- // in order to avoid adding `value` to the descriptor.
- return descriptor;
- }
- }
- // If we got this far we know that object has an own property that is
- // not an accessor so we set it as a value and return descriptor.
- descriptor.value = object[property];
- return descriptor;
- };
- }
- // ES5 15.2.3.4
- // http://es5.github.com/#x15.2.3.4
- if (!Object.getOwnPropertyNames) {
- Object.getOwnPropertyNames = function getOwnPropertyNames(object) {
- return Object.keys(object);
- };
- }
- // ES5 15.2.3.5
- // http://es5.github.com/#x15.2.3.5
- if (!Object.create) {
- var createEmpty;
- if (Object.prototype.__proto__ === null) {
- createEmpty = function () {
- return { "__proto__": null };
- };
- } else {
- // In old IE __proto__ can't be used to manually set `null`
- createEmpty = function () {
- var empty = {};
- for (var i in empty)
- empty[i] = null;
- empty.constructor =
- empty.hasOwnProperty =
- empty.propertyIsEnumerable =
- empty.isPrototypeOf =
- empty.toLocaleString =
- empty.toString =
- empty.valueOf =
- empty.__proto__ = null;
- return empty;
- }
- }
- Object.create = function create(prototype, properties) {
- var object;
- if (prototype === null) {
- object = createEmpty();
- } else {
- if (typeof prototype != "object")
- throw new TypeError("typeof prototype["+(typeof prototype)+"] != 'object'");
- var Type = function () {};
- Type.prototype = prototype;
- object = new Type();
- // IE has no built-in implementation of `Object.getPrototypeOf`
- // neither `__proto__`, but this manually setting `__proto__` will
- // guarantee that `Object.getPrototypeOf` will work as expected with
- // objects created using `Object.create`
- object.__proto__ = prototype;
- }
- if (properties !== void 0)
- Object.defineProperties(object, properties);
- return object;
- };
- }
- // ES5 15.2.3.6
- // http://es5.github.com/#x15.2.3.6
- // Patch for WebKit and IE8 standard mode
- // Designed by hax <hax.github.com>
- // related issue: https://github.com/kriskowal/es5-shim/issues#issue/5
- // IE8 Reference:
- // http://msdn.microsoft.com/en-us/library/dd282900.aspx
- // http://msdn.microsoft.com/en-us/library/dd229916.aspx
- // WebKit Bugs:
- // https://bugs.webkit.org/show_bug.cgi?id=36423
- function doesDefinePropertyWork(object) {
- try {
- Object.defineProperty(object, "sentinel", {});
- return "sentinel" in object;
- } catch (exception) {
- // returns falsy
- }
- }
- // check whether defineProperty works if it's given. Otherwise,
- // shim partially.
- if (Object.defineProperty) {
- var definePropertyWorksOnObject = doesDefinePropertyWork({});
- var definePropertyWorksOnDom = typeof document == "undefined" ||
- doesDefinePropertyWork(document.createElement("div"));
- if (!definePropertyWorksOnObject || !definePropertyWorksOnDom) {
- var definePropertyFallback = Object.defineProperty;
- }
- }
- if (!Object.defineProperty || definePropertyFallback) {
- var ERR_NON_OBJECT_DESCRIPTOR = "Property description must be an object: ";
- var ERR_NON_OBJECT_TARGET = "Object.defineProperty called on non-object: "
- var ERR_ACCESSORS_NOT_SUPPORTED = "getters & setters can not be defined " +
- "on this javascript engine";
- Object.defineProperty = function defineProperty(object, property, descriptor) {
- if ((typeof object != "object" && typeof object != "function") || object === null)
- throw new TypeError(ERR_NON_OBJECT_TARGET + object);
- if ((typeof descriptor != "object" && typeof descriptor != "function") || descriptor === null)
- throw new TypeError(ERR_NON_OBJECT_DESCRIPTOR + descriptor);
- // make a valiant attempt to use the real defineProperty
- // for I8's DOM elements.
- if (definePropertyFallback) {
- try {
- return definePropertyFallback.call(Object, object, property, descriptor);
- } catch (exception) {
- // try the shim if the real one doesn't work
- }
- }
- // If it's a data property.
- if (owns(descriptor, "value")) {
- // fail silently if "writable", "enumerable", or "configurable"
- // are requested but not supported
- /*
- // alternate approach:
- if ( // can't implement these features; allow false but not true
- !(owns(descriptor, "writable") ? descriptor.writable : true) ||
- !(owns(descriptor, "enumerable") ? descriptor.enumerable : true) ||
- !(owns(descriptor, "configurable") ? descriptor.configurable : true)
- )
- throw new RangeError(
- "This implementation of Object.defineProperty does not " +
- "support configurable, enumerable, or writable."
- );
- */
- if (supportsAccessors && (lookupGetter(object, property) ||
- lookupSetter(object, property)))
- {
- // As accessors are supported only on engines implementing
- // `__proto__` we can safely override `__proto__` while defining
- // a property to make sure that we don't hit an inherited
- // accessor.
- var prototype = object.__proto__;
- object.__proto__ = prototypeOfObject;
- // Deleting a property anyway since getter / setter may be
- // defined on object itself.
- delete object[property];
- object[property] = descriptor.value;
- // Setting original `__proto__` back now.
- object.__proto__ = prototype;
- } else {
- object[property] = descriptor.value;
- }
- } else {
- if (!supportsAccessors)
- throw new TypeError(ERR_ACCESSORS_NOT_SUPPORTED);
- // If we got that far then getters and setters can be defined !!
- if (owns(descriptor, "get"))
- defineGetter(object, property, descriptor.get);
- if (owns(descriptor, "set"))
- defineSetter(object, property, descriptor.set);
- }
- return object;
- };
- }
- // ES5 15.2.3.7
- // http://es5.github.com/#x15.2.3.7
- if (!Object.defineProperties) {
- Object.defineProperties = function defineProperties(object, properties) {
- for (var property in properties) {
- if (owns(properties, property))
- Object.defineProperty(object, property, properties[property]);
- }
- return object;
- };
- }
- // ES5 15.2.3.8
- // http://es5.github.com/#x15.2.3.8
- if (!Object.seal) {
- Object.seal = function seal(object) {
- // this is misleading and breaks feature-detection, but
- // allows "securable" code to "gracefully" degrade to working
- // but insecure code.
- return object;
- };
- }
- // ES5 15.2.3.9
- // http://es5.github.com/#x15.2.3.9
- if (!Object.freeze) {
- Object.freeze = function freeze(object) {
- // this is misleading and breaks feature-detection, but
- // allows "securable" code to "gracefully" degrade to working
- // but insecure code.
- return object;
- };
- }
- // detect a Rhino bug and patch it
- try {
- Object.freeze(function () {});
- } catch (exception) {
- Object.freeze = (function freeze(freezeObject) {
- return function freeze(object) {
- if (typeof object == "function") {
- return object;
- } else {
- return freezeObject(object);
- }
- };
- })(Object.freeze);
- }
- // ES5 15.2.3.10
- // http://es5.github.com/#x15.2.3.10
- if (!Object.preventExtensions) {
- Object.preventExtensions = function preventExtensions(object) {
- // this is misleading and breaks feature-detection, but
- // allows "securable" code to "gracefully" degrade to working
- // but insecure code.
- return object;
- };
- }
- // ES5 15.2.3.11
- // http://es5.github.com/#x15.2.3.11
- if (!Object.isSealed) {
- Object.isSealed = function isSealed(object) {
- return false;
- };
- }
- // ES5 15.2.3.12
- // http://es5.github.com/#x15.2.3.12
- if (!Object.isFrozen) {
- Object.isFrozen = function isFrozen(object) {
- return false;
- };
- }
- // ES5 15.2.3.13
- // http://es5.github.com/#x15.2.3.13
- if (!Object.isExtensible) {
- Object.isExtensible = function isExtensible(object) {
- // 1. If Type(O) is not Object throw a TypeError exception.
- if (Object(object) === object) {
- throw new TypeError(); // TODO message
- }
- // 2. Return the Boolean value of the [[Extensible]] internal property of O.
- var name = '';
- while (owns(object, name)) {
- name += '?';
- }
- object[name] = true;
- var returnValue = owns(object, name);
- delete object[name];
- return returnValue;
- };
- }
- // ES5 15.2.3.14
- // http://es5.github.com/#x15.2.3.14
- if (!Object.keys) {
- // http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation
- var hasDontEnumBug = true,
- dontEnums = [
- "toString",
- "toLocaleString",
- "valueOf",
- "hasOwnProperty",
- "isPrototypeOf",
- "propertyIsEnumerable",
- "constructor"
- ],
- dontEnumsLength = dontEnums.length;
- for (var key in {"toString": null}) {
- hasDontEnumBug = false;
- }
- Object.keys = function keys(object) {
- if (
- (typeof object != "object" && typeof object != "function") ||
- object === null
- ) {
- throw new TypeError("Object.keys called on a non-object");
- }
- var keys = [];
- for (var name in object) {
- if (owns(object, name)) {
- keys.push(name);
- }
- }
- if (hasDontEnumBug) {
- for (var i = 0, ii = dontEnumsLength; i < ii; i++) {
- var dontEnum = dontEnums[i];
- if (owns(object, dontEnum)) {
- keys.push(dontEnum);
- }
- }
- }
- return keys;
- };
- }
- //
- // most of es5-shim Date section is removed since ace doesn't need it, it is too intrusive and it causes problems for users
- // ====
- //
- // ES5 15.9.4.4
- // http://es5.github.com/#x15.9.4.4
- if (!Date.now) {
- Date.now = function now() {
- return new Date().getTime();
- };
- }
- //
- // String
- // ======
- //
- // ES5 15.5.4.20
- // http://es5.github.com/#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";
- if (!String.prototype.trim || ws.trim()) {
- // http://blog.stevenlevithan.com/archives/faster-trim-javascript
- // http://perfectionkills.com/whitespace-deviations/
- ws = "[" + ws + "]";
- var trimBeginRegexp = new RegExp("^" + ws + ws + "*"),
- trimEndRegexp = new RegExp(ws + ws + "*$");
- String.prototype.trim = function trim() {
- return String(this).replace(trimBeginRegexp, "").replace(trimEndRegexp, "");
- };
- }
- //
- // Util
- // ======
- //
- // ES5 9.4
- // http://es5.github.com/#x9.4
- // http://jsperf.com/to-integer
- function toInteger(n) {
- n = +n;
- 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, toString;
- if (isPrimitive(input)) {
- return input;
- }
- valueOf = input.valueOf;
- if (typeof valueOf === "function") {
- val = valueOf.call(input);
- if (isPrimitive(val)) {
- return val;
- }
- }
- toString = input.toString;
- if (typeof toString === "function") {
- val = toString.call(input);
- if (isPrimitive(val)) {
- return val;
- }
- }
- throw new TypeError();
- }
- // ES5 9.9
- // http://es5.github.com/#x9.9
- var toObject = function (o) {
- if (o == null) { // this matches both null and undefined
- throw new TypeError("can't convert "+o+" to object");
- }
- return Object(o);
- };
- });
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