1884 lines
55 KiB
JavaScript
Executable File
1884 lines
55 KiB
JavaScript
Executable File
// ES6-shim 0.8.0 (c) 2013 Paul Miller (paulmillr.com)
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// ES6-shim may be freely distributed under the MIT license.
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// For more details and documentation:
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// https://github.com/paulmillr/es6-shim/
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webshim.register('es6', function($, webshim, window, document, undefined){
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'use strict';
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var isCallableWithoutNew = function(func) {
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try { func(); }
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catch (e) { return false; }
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return true;
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};
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var supportsSubclassing = function(C, f) {
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/* jshint proto:true */
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try {
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var Sub = function() { C.apply(this, arguments); };
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if (!Sub.__proto__) { return false; /* skip test on IE < 11 */ }
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Object.setPrototypeOf(Sub, C);
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Sub.prototype = Object.create(C.prototype, {
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constructor: { value: C }
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});
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return f(Sub);
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} catch (e) {
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return false;
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}
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};
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var arePropertyDescriptorsSupported = function() {
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try {
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Object.defineProperty({}, 'x', {});
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return true;
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} catch (e) { /* this is IE 8. */
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return false;
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}
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};
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var startsWithRejectsRegex = function() {
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var rejectsRegex = false;
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if (String.prototype.startsWith) {
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try {
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'/a/'.startsWith(/a/);
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} catch (e) { /* this is spec compliant */
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rejectsRegex = true;
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}
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}
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return rejectsRegex;
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};
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/*jshint evil: true */
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var getGlobal = new Function('return this;');
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/*jshint evil: false */
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var main = function() {
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var globals = getGlobal();
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var global_isFinite = globals.isFinite;
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var supportsDescriptors = !!Object.defineProperty && arePropertyDescriptorsSupported();
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var startsWithIsCompliant = startsWithRejectsRegex();
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var _slice = Array.prototype.slice;
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var _indexOf = String.prototype.indexOf;
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var _toString = Object.prototype.toString;
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var _hasOwnProperty = Object.prototype.hasOwnProperty;
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var ArrayIterator; // make our implementation private
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// Define configurable, writable and non-enumerable props
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// if they don’t exist.
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var defineProperties = function(object, map) {
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Object.keys(map).forEach(function(name) {
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var method = map[name];
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if (name in object) return;
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if (supportsDescriptors) {
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Object.defineProperty(object, name, {
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configurable: true,
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enumerable: false,
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writable: true,
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value: method
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});
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} else {
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object[name] = method;
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}
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});
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};
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// Simple shim for Object.create on ES3 browsers
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// (unlike real shim, no attempt to support `prototype === null`)
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var create = Object.create || function(prototype, properties) {
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function Type() {}
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Type.prototype = prototype;
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var object = new Type();
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if (typeof properties !== "undefined") {
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defineProperties(object, properties);
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}
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return object;
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};
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// This is a private name in the es6 spec, equal to '[Symbol.iterator]'
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// we're going to use an arbitrary _-prefixed name to make our shims
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// work properly with each other, even though we don't have full Iterator
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// support. That is, `Array.from(map.keys())` will work, but we don't
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// pretend to export a "real" Iterator interface.
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var $iterator$ = (typeof Symbol === 'object' && Symbol.iterator) ||
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'_es6shim_iterator_';
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// Firefox ships a partial implementation using the name @@iterator.
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// https://bugzilla.mozilla.org/show_bug.cgi?id=907077#c14
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// So use that name if we detect it.
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if (globals.Set && typeof new globals.Set()['@@iterator'] === 'function') {
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$iterator$ = '@@iterator';
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}
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var addIterator = function(prototype, impl) {
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if (!impl) { impl = function iterator() { return this; }; }
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var o = {};
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o[$iterator$] = impl;
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defineProperties(prototype, o);
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};
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// taken directly from https://github.com/ljharb/is-arguments/blob/master/index.js
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// can be replaced with require('is-arguments') if we ever use a build process instead
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var isArguments = function isArguments(value) {
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var str = _toString.call(value);
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var result = str === '[object Arguments]';
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if (!result) {
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result = str !== '[object Array]' &&
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value !== null &&
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typeof value === 'object' &&
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typeof value.length === 'number' &&
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value.length >= 0 &&
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_toString.call(value.callee) === '[object Function]';
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}
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return result;
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};
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var emulateES6construct = function(o) {
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if (!ES.TypeIsObject(o)) throw new TypeError('bad object');
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// es5 approximation to es6 subclass semantics: in es6, 'new Foo'
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// would invoke Foo.@@create to allocation/initialize the new object.
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// In es5 we just get the plain object. So if we detect an
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// uninitialized object, invoke o.constructor.@@create
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if (!o._es6construct) {
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if (o.constructor && ES.IsCallable(o.constructor['@@create'])) {
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o = o.constructor['@@create'](o);
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}
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defineProperties(o, { _es6construct: true });
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}
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return o;
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};
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var ES = {
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CheckObjectCoercible: function(x, optMessage) {
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/* jshint eqnull:true */
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if (x == null)
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throw new TypeError(optMessage || ('Cannot call method on ' + x));
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return x;
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},
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TypeIsObject: function(x) {
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/* jshint eqnull:true */
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// this is expensive when it returns false; use this function
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// when you expect it to return true in the common case.
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return x != null && Object(x) === x;
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},
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ToObject: function(o, optMessage) {
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return Object(ES.CheckObjectCoercible(o, optMessage));
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},
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IsCallable: function(x) {
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return typeof x === 'function' &&
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// some versions of IE say that typeof /abc/ === 'function'
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_toString.call(x) === '[object Function]';
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},
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ToInt32: function(x) {
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return x >> 0;
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},
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ToUint32: function(x) {
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return x >>> 0;
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},
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ToInteger: function(value) {
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var number = +value;
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if (Number.isNaN(number)) return 0;
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if (number === 0 || !Number.isFinite(number)) return number;
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return Math.sign(number) * Math.floor(Math.abs(number));
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},
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ToLength: function(value) {
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var len = ES.ToInteger(value);
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if (len <= 0) return 0; // includes converting -0 to +0
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if (len > Number.MAX_SAFE_INTEGER) return Number.MAX_SAFE_INTEGER;
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return len;
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},
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SameValue: function(a, b) {
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if (a === b) {
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// 0 === -0, but they are not identical.
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if (a === 0) return 1 / a === 1 / b;
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return true;
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}
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return Number.isNaN(a) && Number.isNaN(b);
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},
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SameValueZero: function(a, b) {
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// same as SameValue except for SameValueZero(+0, -0) == true
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return (a === b) || (Number.isNaN(a) && Number.isNaN(b));
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},
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IsIterable: function(o) {
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return ES.TypeIsObject(o) &&
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(o[$iterator$] !== undefined || isArguments(o));
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},
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GetIterator: function(o) {
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if (isArguments(o)) {
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// special case support for `arguments`
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return new ArrayIterator(o, "value");
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}
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var it = o[$iterator$]();
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if (!ES.TypeIsObject(it)) {
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throw new TypeError('bad iterator');
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}
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return it;
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},
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IteratorNext: function(it) {
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var result = (arguments.length > 1) ? it.next(arguments[1]) : it.next();
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if (!ES.TypeIsObject(result)) {
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throw new TypeError('bad iterator');
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}
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return result;
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},
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Construct: function(C, args) {
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// CreateFromConstructor
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var obj;
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if (ES.IsCallable(C['@@create'])) {
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obj = C['@@create']();
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} else {
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// OrdinaryCreateFromConstructor
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obj = create(C.prototype || null);
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}
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// Mark that we've used the es6 construct path
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// (see emulateES6construct)
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defineProperties(obj, { _es6construct: true });
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// Call the constructor.
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var result = C.apply(obj, args);
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return ES.TypeIsObject(result) ? result : obj;
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}
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};
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var numberConversion = (function () {
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// from https://github.com/inexorabletash/polyfill/blob/master/typedarray.js#L176-L266
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// with permission and license, per https://twitter.com/inexorabletash/status/372206509540659200
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function roundToEven(n) {
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var w = Math.floor(n), f = n - w;
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if (f < 0.5) {
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return w;
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}
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if (f > 0.5) {
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return w + 1;
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}
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return w % 2 ? w + 1 : w;
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}
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function packIEEE754(v, ebits, fbits) {
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var bias = (1 << (ebits - 1)) - 1,
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s, e, f, ln,
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i, bits, str, bytes;
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// Compute sign, exponent, fraction
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if (v !== v) {
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// NaN
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// http://dev.w3.org/2006/webapi/WebIDL/#es-type-mapping
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e = (1 << ebits) - 1;
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f = Math.pow(2, fbits - 1);
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s = 0;
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} else if (v === Infinity || v === -Infinity) {
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e = (1 << ebits) - 1;
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f = 0;
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s = (v < 0) ? 1 : 0;
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} else if (v === 0) {
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e = 0;
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f = 0;
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s = (1 / v === -Infinity) ? 1 : 0;
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} else {
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s = v < 0;
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v = Math.abs(v);
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if (v >= Math.pow(2, 1 - bias)) {
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e = Math.min(Math.floor(Math.log(v) / Math.LN2), 1023);
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f = roundToEven(v / Math.pow(2, e) * Math.pow(2, fbits));
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if (f / Math.pow(2, fbits) >= 2) {
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e = e + 1;
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f = 1;
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}
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if (e > bias) {
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// Overflow
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e = (1 << ebits) - 1;
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f = 0;
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} else {
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// Normal
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e = e + bias;
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f = f - Math.pow(2, fbits);
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}
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} else {
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// Subnormal
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e = 0;
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f = roundToEven(v / Math.pow(2, 1 - bias - fbits));
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}
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}
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// Pack sign, exponent, fraction
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bits = [];
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for (i = fbits; i; i -= 1) {
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bits.push(f % 2 ? 1 : 0);
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f = Math.floor(f / 2);
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}
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for (i = ebits; i; i -= 1) {
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bits.push(e % 2 ? 1 : 0);
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e = Math.floor(e / 2);
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}
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bits.push(s ? 1 : 0);
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bits.reverse();
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str = bits.join('');
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// Bits to bytes
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bytes = [];
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while (str.length) {
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bytes.push(parseInt(str.substring(0, 8), 2));
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str = str.substring(8);
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}
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return bytes;
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}
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function unpackIEEE754(bytes, ebits, fbits) {
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// Bytes to bits
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var bits = [], i, j, b, str,
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bias, s, e, f;
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for (i = bytes.length; i; i -= 1) {
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b = bytes[i - 1];
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for (j = 8; j; j -= 1) {
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bits.push(b % 2 ? 1 : 0);
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b = b >> 1;
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}
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}
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bits.reverse();
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str = bits.join('');
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// Unpack sign, exponent, fraction
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bias = (1 << (ebits - 1)) - 1;
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s = parseInt(str.substring(0, 1), 2) ? -1 : 1;
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e = parseInt(str.substring(1, 1 + ebits), 2);
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f = parseInt(str.substring(1 + ebits), 2);
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|
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// Produce number
|
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if (e === (1 << ebits) - 1) {
|
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return f !== 0 ? NaN : s * Infinity;
|
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} else if (e > 0) {
|
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// Normalized
|
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return s * Math.pow(2, e - bias) * (1 + f / Math.pow(2, fbits));
|
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} else if (f !== 0) {
|
||
// Denormalized
|
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return s * Math.pow(2, -(bias - 1)) * (f / Math.pow(2, fbits));
|
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} else {
|
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return s < 0 ? -0 : 0;
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}
|
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}
|
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function unpackFloat64(b) { return unpackIEEE754(b, 11, 52); }
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function packFloat64(v) { return packIEEE754(v, 11, 52); }
|
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function unpackFloat32(b) { return unpackIEEE754(b, 8, 23); }
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function packFloat32(v) { return packIEEE754(v, 8, 23); }
|
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|
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var conversions = {
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toFloat32: function (num) { return unpackFloat32(packFloat32(num)); }
|
||
};
|
||
if (typeof Float32Array !== 'undefined') {
|
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var float32array = new Float32Array(1);
|
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conversions.toFloat32 = function (num) {
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float32array[0] = num;
|
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return float32array[0];
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};
|
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}
|
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return conversions;
|
||
}());
|
||
|
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defineProperties(String, {
|
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fromCodePoint: function() {
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var points = _slice.call(arguments, 0, arguments.length);
|
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var result = [];
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var next;
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for (var i = 0, length = points.length; i < length; i++) {
|
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next = Number(points[i]);
|
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if (!ES.SameValue(next, ES.ToInteger(next)) ||
|
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next < 0 || next > 0x10FFFF) {
|
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throw new RangeError('Invalid code point ' + next);
|
||
}
|
||
|
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if (next < 0x10000) {
|
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result.push(String.fromCharCode(next));
|
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} else {
|
||
next -= 0x10000;
|
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result.push(String.fromCharCode((next >> 10) + 0xD800));
|
||
result.push(String.fromCharCode((next % 0x400) + 0xDC00));
|
||
}
|
||
}
|
||
return result.join('');
|
||
},
|
||
|
||
raw: function(callSite) { // raw.length===1
|
||
var substitutions = _slice.call(arguments, 1, arguments.length);
|
||
var cooked = ES.ToObject(callSite, 'bad callSite');
|
||
var rawValue = cooked.raw;
|
||
var raw = ES.ToObject(rawValue, 'bad raw value');
|
||
var len = Object.keys(raw).length;
|
||
var literalsegments = ES.ToLength(len);
|
||
if (literalsegments === 0) {
|
||
return '';
|
||
}
|
||
|
||
var stringElements = [];
|
||
var nextIndex = 0;
|
||
var nextKey, next, nextSeg, nextSub;
|
||
while (nextIndex < literalsegments) {
|
||
nextKey = String(nextIndex);
|
||
next = raw[nextKey];
|
||
nextSeg = String(next);
|
||
stringElements.push(nextSeg);
|
||
if (nextIndex + 1 >= literalsegments) {
|
||
break;
|
||
}
|
||
next = substitutions[nextKey];
|
||
if (next === undefined) {
|
||
break;
|
||
}
|
||
nextSub = String(next);
|
||
stringElements.push(nextSub);
|
||
nextIndex++;
|
||
}
|
||
return stringElements.join('');
|
||
}
|
||
});
|
||
|
||
var StringShims = {
|
||
// Fast repeat, uses the `Exponentiation by squaring` algorithm.
|
||
// Perf: http://jsperf.com/string-repeat2/2
|
||
repeat: (function() {
|
||
var repeat = function(s, times) {
|
||
if (times < 1) return '';
|
||
if (times % 2) return repeat(s, times - 1) + s;
|
||
var half = repeat(s, times / 2);
|
||
return half + half;
|
||
};
|
||
|
||
return function(times) {
|
||
var thisStr = String(ES.CheckObjectCoercible(this));
|
||
times = ES.ToInteger(times);
|
||
if (times < 0 || times === Infinity) {
|
||
throw new RangeError('Invalid String#repeat value');
|
||
}
|
||
return repeat(thisStr, times);
|
||
};
|
||
})(),
|
||
|
||
startsWith: function(searchStr) {
|
||
var thisStr = String(ES.CheckObjectCoercible(this));
|
||
if (_toString.call(searchStr) === '[object RegExp]') throw new TypeError('Cannot call method "startsWith" with a regex');
|
||
searchStr = String(searchStr);
|
||
var startArg = arguments.length > 1 ? arguments[1] : undefined;
|
||
var start = Math.max(ES.ToInteger(startArg), 0);
|
||
return thisStr.slice(start, start + searchStr.length) === searchStr;
|
||
},
|
||
|
||
endsWith: function(searchStr) {
|
||
var thisStr = String(ES.CheckObjectCoercible(this));
|
||
if (_toString.call(searchStr) === '[object RegExp]') throw new TypeError('Cannot call method "endsWith" with a regex');
|
||
searchStr = String(searchStr);
|
||
var thisLen = thisStr.length;
|
||
var posArg = arguments.length > 1 ? arguments[1] : undefined;
|
||
var pos = posArg === undefined ? thisLen : ES.ToInteger(posArg);
|
||
var end = Math.min(Math.max(pos, 0), thisLen);
|
||
return thisStr.slice(end - searchStr.length, end) === searchStr;
|
||
},
|
||
|
||
contains: function(searchString) {
|
||
var position = arguments.length > 1 ? arguments[1] : undefined;
|
||
// Somehow this trick makes method 100% compat with the spec.
|
||
return _indexOf.call(this, searchString, position) !== -1;
|
||
},
|
||
|
||
codePointAt: function(pos) {
|
||
var thisStr = String(ES.CheckObjectCoercible(this));
|
||
var position = ES.ToInteger(pos);
|
||
var length = thisStr.length;
|
||
if (position < 0 || position >= length) return undefined;
|
||
var first = thisStr.charCodeAt(position);
|
||
var isEnd = (position + 1 === length);
|
||
if (first < 0xD800 || first > 0xDBFF || isEnd) return first;
|
||
var second = thisStr.charCodeAt(position + 1);
|
||
if (second < 0xDC00 || second > 0xDFFF) return first;
|
||
return ((first - 0xD800) * 1024) + (second - 0xDC00) + 0x10000;
|
||
}
|
||
};
|
||
defineProperties(String.prototype, StringShims);
|
||
|
||
var hasStringTrimBug = '\u0085'.trim().length !== 1;
|
||
if (hasStringTrimBug) {
|
||
var originalStringTrim = String.prototype.trim;
|
||
delete String.prototype.trim;
|
||
// whitespace from: http://es5.github.io/#x15.5.4.20
|
||
// implementation from https://github.com/es-shims/es5-shim/blob/v3.4.0/es5-shim.js#L1304-L1324
|
||
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'
|
||
].join('');
|
||
var trimBeginRegexp = new RegExp('^[' + ws + '][' + ws + ']*');
|
||
var trimEndRegexp = new RegExp('[' + ws + '][' + ws + ']*$');
|
||
defineProperties(String.prototype, {
|
||
trim: function() {
|
||
if (this === undefined || this === null) {
|
||
throw new TypeError("can't convert " + this + " to object");
|
||
}
|
||
return String(this)
|
||
.replace(trimBeginRegexp, "")
|
||
.replace(trimEndRegexp, "");
|
||
}
|
||
});
|
||
}
|
||
|
||
// see https://people.mozilla.org/~jorendorff/es6-draft.html#sec-string.prototype-@@iterator
|
||
var StringIterator = function(s) {
|
||
this._s = String(ES.CheckObjectCoercible(s));
|
||
this._i = 0;
|
||
};
|
||
StringIterator.prototype.next = function() {
|
||
var s = this._s, i = this._i;
|
||
if (s === undefined || i >= s.length) {
|
||
this._s = undefined;
|
||
return { value: undefined, done: true };
|
||
}
|
||
var first = s.charCodeAt(i), second, len;
|
||
if (first < 0xD800 || first > 0xDBFF || (i+1) == s.length) {
|
||
len = 1;
|
||
} else {
|
||
second = s.charCodeAt(i+1);
|
||
len = (second < 0xDC00 || second > 0xDFFF) ? 1 : 2;
|
||
}
|
||
this._i = i + len;
|
||
return { value: s.substr(i, len), done: false };
|
||
};
|
||
addIterator(StringIterator.prototype);
|
||
addIterator(String.prototype, function() {
|
||
return new StringIterator(this);
|
||
});
|
||
|
||
if (!startsWithIsCompliant) {
|
||
// Firefox has a noncompliant startsWith implementation
|
||
String.prototype.startsWith = StringShims.startsWith;
|
||
String.prototype.endsWith = StringShims.endsWith;
|
||
}
|
||
|
||
defineProperties(Array, {
|
||
from: function(iterable) {
|
||
var mapFn = arguments.length > 1 ? arguments[1] : undefined;
|
||
var thisArg = arguments.length > 2 ? arguments[2] : undefined;
|
||
|
||
var list = ES.ToObject(iterable, 'bad iterable');
|
||
if (mapFn !== undefined && !ES.IsCallable(mapFn)) {
|
||
throw new TypeError('Array.from: when provided, the second argument must be a function');
|
||
}
|
||
|
||
var usingIterator = ES.IsIterable(list);
|
||
// does the spec really mean that Arrays should use ArrayIterator?
|
||
// https://bugs.ecmascript.org/show_bug.cgi?id=2416
|
||
//if (Array.isArray(list)) { usingIterator=false; }
|
||
var length = usingIterator ? 0 : ES.ToLength(list.length);
|
||
var result = ES.IsCallable(this) ? Object(usingIterator ? new this() : new this(length)) : new Array(length);
|
||
var it = usingIterator ? ES.GetIterator(list) : null;
|
||
var value;
|
||
|
||
for (var i = 0; usingIterator || (i < length); i++) {
|
||
if (usingIterator) {
|
||
value = ES.IteratorNext(it);
|
||
if (value.done) {
|
||
length = i;
|
||
break;
|
||
}
|
||
value = value.value;
|
||
} else {
|
||
value = list[i];
|
||
}
|
||
if (mapFn) {
|
||
result[i] = thisArg ? mapFn.call(thisArg, value, i) : mapFn(value, i);
|
||
} else {
|
||
result[i] = value;
|
||
}
|
||
}
|
||
|
||
result.length = length;
|
||
return result;
|
||
},
|
||
|
||
of: function() {
|
||
return Array.from(arguments);
|
||
}
|
||
});
|
||
|
||
// Our ArrayIterator is private; see
|
||
// https://github.com/paulmillr/es6-shim/issues/252
|
||
ArrayIterator = function(array, kind) {
|
||
this.i = 0;
|
||
this.array = array;
|
||
this.kind = kind;
|
||
};
|
||
|
||
defineProperties(ArrayIterator.prototype, {
|
||
next: function() {
|
||
var i = this.i, array = this.array;
|
||
if (i === undefined || this.kind === undefined) {
|
||
throw new TypeError('Not an ArrayIterator');
|
||
}
|
||
if (array!==undefined) {
|
||
var len = ES.ToLength(array.length);
|
||
for (; i < len; i++) {
|
||
var kind = this.kind;
|
||
var retval;
|
||
if (kind === "key") {
|
||
retval = i;
|
||
} else if (kind === "value") {
|
||
retval = array[i];
|
||
} else if (kind === "entry") {
|
||
retval = [i, array[i]];
|
||
}
|
||
this.i = i + 1;
|
||
return { value: retval, done: false };
|
||
}
|
||
}
|
||
this.array = undefined;
|
||
return { value: undefined, done: true };
|
||
}
|
||
});
|
||
addIterator(ArrayIterator.prototype);
|
||
|
||
defineProperties(Array.prototype, {
|
||
copyWithin: function(target, start) {
|
||
var end = arguments[2]; // copyWithin.length must be 2
|
||
var o = ES.ToObject(this);
|
||
var len = ES.ToLength(o.length);
|
||
target = ES.ToInteger(target);
|
||
start = ES.ToInteger(start);
|
||
var to = target < 0 ? Math.max(len + target, 0) : Math.min(target, len);
|
||
var from = start < 0 ? Math.max(len + start, 0) : Math.min(start, len);
|
||
end = (end===undefined) ? len : ES.ToInteger(end);
|
||
var fin = end < 0 ? Math.max(len + end, 0) : Math.min(end, len);
|
||
var count = Math.min(fin - from, len - to);
|
||
var direction = 1;
|
||
if (from < to && to < (from + count)) {
|
||
direction = -1;
|
||
from += count - 1;
|
||
to += count - 1;
|
||
}
|
||
while (count > 0) {
|
||
if (_hasOwnProperty.call(o, from)) {
|
||
o[to] = o[from];
|
||
} else {
|
||
delete o[from];
|
||
}
|
||
from += direction;
|
||
to += direction;
|
||
count -= 1;
|
||
}
|
||
return o;
|
||
},
|
||
|
||
fill: function(value) {
|
||
var start = arguments[1], end = arguments[2]; // fill.length===1
|
||
var O = ES.ToObject(this);
|
||
var len = ES.ToLength(O.length);
|
||
start = ES.ToInteger(start===undefined ? 0 : start);
|
||
end = ES.ToInteger(end===undefined ? len : end);
|
||
|
||
var relativeStart = start < 0 ? Math.max(len + start, 0) : Math.min(start, len);
|
||
|
||
for (var i = relativeStart; i < len && i < end; ++i) {
|
||
O[i] = value;
|
||
}
|
||
return O;
|
||
},
|
||
|
||
find: function(predicate) {
|
||
var list = ES.ToObject(this);
|
||
var length = ES.ToLength(list.length);
|
||
if (!ES.IsCallable(predicate)) {
|
||
throw new TypeError('Array#find: predicate must be a function');
|
||
}
|
||
var thisArg = arguments[1];
|
||
for (var i = 0, value; i < length; i++) {
|
||
if (i in list) {
|
||
value = list[i];
|
||
if (predicate.call(thisArg, value, i, list)) return value;
|
||
}
|
||
}
|
||
return undefined;
|
||
},
|
||
|
||
findIndex: function(predicate) {
|
||
var list = ES.ToObject(this);
|
||
var length = ES.ToLength(list.length);
|
||
if (!ES.IsCallable(predicate)) {
|
||
throw new TypeError('Array#findIndex: predicate must be a function');
|
||
}
|
||
var thisArg = arguments[1];
|
||
for (var i = 0; i < length; i++) {
|
||
if (i in list) {
|
||
if (predicate.call(thisArg, list[i], i, list)) return i;
|
||
}
|
||
}
|
||
return -1;
|
||
},
|
||
|
||
keys: function() {
|
||
return new ArrayIterator(this, "key");
|
||
},
|
||
|
||
values: function() {
|
||
return new ArrayIterator(this, "value");
|
||
},
|
||
|
||
entries: function() {
|
||
return new ArrayIterator(this, "entry");
|
||
}
|
||
});
|
||
addIterator(Array.prototype, function() { return this.values(); });
|
||
// Chrome defines keys/values/entries on Array, but doesn't give us
|
||
// any way to identify its iterator. So add our own shimmed field.
|
||
if (Object.getPrototypeOf) {
|
||
addIterator(Object.getPrototypeOf([].values()));
|
||
}
|
||
|
||
var maxSafeInteger = Math.pow(2, 53) - 1;
|
||
defineProperties(Number, {
|
||
MAX_SAFE_INTEGER: maxSafeInteger,
|
||
MIN_SAFE_INTEGER: -maxSafeInteger,
|
||
EPSILON: 2.220446049250313e-16,
|
||
|
||
parseInt: globals.parseInt,
|
||
parseFloat: globals.parseFloat,
|
||
|
||
isFinite: function(value) {
|
||
return typeof value === 'number' && global_isFinite(value);
|
||
},
|
||
|
||
isInteger: function(value) {
|
||
return typeof value === 'number' &&
|
||
!Number.isNaN(value) &&
|
||
Number.isFinite(value) &&
|
||
ES.ToInteger(value) === value;
|
||
},
|
||
|
||
isSafeInteger: function(value) {
|
||
return Number.isInteger(value) && Math.abs(value) <= Number.MAX_SAFE_INTEGER;
|
||
},
|
||
|
||
isNaN: function(value) {
|
||
// NaN !== NaN, but they are identical.
|
||
// NaNs are the only non-reflexive value, i.e., if x !== x,
|
||
// then x is NaN.
|
||
// isNaN is broken: it converts its argument to number, so
|
||
// isNaN('foo') => true
|
||
return value !== value;
|
||
}
|
||
|
||
});
|
||
|
||
if (supportsDescriptors) {
|
||
defineProperties(Object, {
|
||
getPropertyDescriptor: function(subject, name) {
|
||
var pd = Object.getOwnPropertyDescriptor(subject, name);
|
||
var proto = Object.getPrototypeOf(subject);
|
||
while (pd === undefined && proto !== null) {
|
||
pd = Object.getOwnPropertyDescriptor(proto, name);
|
||
proto = Object.getPrototypeOf(proto);
|
||
}
|
||
return pd;
|
||
},
|
||
|
||
getPropertyNames: function(subject) {
|
||
var result = Object.getOwnPropertyNames(subject);
|
||
var proto = Object.getPrototypeOf(subject);
|
||
|
||
var addProperty = function(property) {
|
||
if (result.indexOf(property) === -1) {
|
||
result.push(property);
|
||
}
|
||
};
|
||
|
||
while (proto !== null) {
|
||
Object.getOwnPropertyNames(proto).forEach(addProperty);
|
||
proto = Object.getPrototypeOf(proto);
|
||
}
|
||
return result;
|
||
}
|
||
});
|
||
|
||
defineProperties(Object, {
|
||
// 19.1.3.1
|
||
assign: function(target, source) {
|
||
if (!ES.TypeIsObject(target)) {
|
||
throw new TypeError('target must be an object');
|
||
}
|
||
return Array.prototype.reduce.call(arguments, function(target, source) {
|
||
if (!ES.TypeIsObject(source)) {
|
||
throw new TypeError('source must be an object');
|
||
}
|
||
return Object.keys(source).reduce(function(target, key) {
|
||
target[key] = source[key];
|
||
return target;
|
||
}, target);
|
||
});
|
||
},
|
||
|
||
getOwnPropertyKeys: function(subject) {
|
||
return Object.keys(subject);
|
||
},
|
||
|
||
is: function(a, b) {
|
||
return ES.SameValue(a, b);
|
||
},
|
||
|
||
// 19.1.3.9
|
||
// shim from https://gist.github.com/WebReflection/5593554
|
||
setPrototypeOf: (function(Object, magic) {
|
||
var set;
|
||
|
||
var checkArgs = function(O, proto) {
|
||
if (!ES.TypeIsObject(O)) {
|
||
throw new TypeError('cannot set prototype on a non-object');
|
||
}
|
||
if (!(proto===null || ES.TypeIsObject(proto))) {
|
||
throw new TypeError('can only set prototype to an object or null'+proto);
|
||
}
|
||
};
|
||
|
||
var setPrototypeOf = function(O, proto) {
|
||
checkArgs(O, proto);
|
||
set.call(O, proto);
|
||
return O;
|
||
};
|
||
|
||
try {
|
||
// this works already in Firefox and Safari
|
||
set = Object.getOwnPropertyDescriptor(Object.prototype, magic).set;
|
||
set.call({}, null);
|
||
} catch (e) {
|
||
if (Object.prototype !== {}[magic]) {
|
||
// IE < 11 cannot be shimmed
|
||
return;
|
||
}
|
||
// probably Chrome or some old Mobile stock browser
|
||
set = function(proto) {
|
||
this[magic] = proto;
|
||
};
|
||
// please note that this will **not** work
|
||
// in those browsers that do not inherit
|
||
// __proto__ by mistake from Object.prototype
|
||
// in these cases we should probably throw an error
|
||
// or at least be informed about the issue
|
||
setPrototypeOf.polyfill = setPrototypeOf(
|
||
setPrototypeOf({}, null),
|
||
Object.prototype
|
||
) instanceof Object;
|
||
// setPrototypeOf.polyfill === true means it works as meant
|
||
// setPrototypeOf.polyfill === false means it's not 100% reliable
|
||
// setPrototypeOf.polyfill === undefined
|
||
// or
|
||
// setPrototypeOf.polyfill == null means it's not a polyfill
|
||
// which means it works as expected
|
||
// we can even delete Object.prototype.__proto__;
|
||
}
|
||
return setPrototypeOf;
|
||
})(Object, '__proto__')
|
||
});
|
||
}
|
||
|
||
// Workaround bug in Opera 12 where setPrototypeOf(x, null) doesn't work,
|
||
// but Object.create(null) does.
|
||
if (Object.setPrototypeOf && Object.getPrototypeOf &&
|
||
Object.getPrototypeOf(Object.setPrototypeOf({}, null)) !== null &&
|
||
Object.getPrototypeOf(Object.create(null)) === null) {
|
||
(function() {
|
||
var FAKENULL = Object.create(null);
|
||
var gpo = Object.getPrototypeOf, spo = Object.setPrototypeOf;
|
||
Object.getPrototypeOf = function(o) {
|
||
var result = gpo(o);
|
||
return result === FAKENULL ? null : result;
|
||
};
|
||
Object.setPrototypeOf = function(o, p) {
|
||
if (p === null) { p = FAKENULL; }
|
||
return spo(o, p);
|
||
};
|
||
Object.setPrototypeOf.polyfill = false;
|
||
})();
|
||
}
|
||
|
||
try {
|
||
Object.keys('foo');
|
||
} catch (e) {
|
||
var originalObjectKeys = Object.keys;
|
||
Object.keys = function (obj) {
|
||
return originalObjectKeys(ES.ToObject(obj));
|
||
};
|
||
}
|
||
|
||
var MathShims = {
|
||
acosh: function(value) {
|
||
value = Number(value);
|
||
if (Number.isNaN(value) || value < 1) return NaN;
|
||
if (value === 1) return 0;
|
||
if (value === Infinity) return value;
|
||
return Math.log(value + Math.sqrt(value * value - 1));
|
||
},
|
||
|
||
asinh: function(value) {
|
||
value = Number(value);
|
||
if (value === 0 || !global_isFinite(value)) {
|
||
return value;
|
||
}
|
||
return value < 0 ? -Math.asinh(-value) : Math.log(value + Math.sqrt(value * value + 1));
|
||
},
|
||
|
||
atanh: function(value) {
|
||
value = Number(value);
|
||
if (Number.isNaN(value) || value < -1 || value > 1) {
|
||
return NaN;
|
||
}
|
||
if (value === -1) return -Infinity;
|
||
if (value === 1) return Infinity;
|
||
if (value === 0) return value;
|
||
return 0.5 * Math.log((1 + value) / (1 - value));
|
||
},
|
||
|
||
cbrt: function(value) {
|
||
value = Number(value);
|
||
if (value === 0) return value;
|
||
var negate = value < 0, result;
|
||
if (negate) value = -value;
|
||
result = Math.pow(value, 1/3);
|
||
return negate ? -result : result;
|
||
},
|
||
|
||
clz32: function(value) {
|
||
// See https://bugs.ecmascript.org/show_bug.cgi?id=2465
|
||
value = Number(value);
|
||
if (Number.isNaN(value)) return NaN;
|
||
var number = ES.ToUint32(value);
|
||
if (number === 0) {
|
||
return 32;
|
||
}
|
||
return 32 - (number).toString(2).length;
|
||
},
|
||
|
||
cosh: function(value) {
|
||
value = Number(value);
|
||
if (value === 0) return 1; // +0 or -0
|
||
if (Number.isNaN(value)) return NaN;
|
||
if (!global_isFinite(value)) return Infinity;
|
||
if (value < 0) value = -value;
|
||
if (value > 21) return Math.exp(value) / 2;
|
||
return (Math.exp(value) + Math.exp(-value)) / 2;
|
||
},
|
||
|
||
expm1: function(value) {
|
||
value = Number(value);
|
||
if (value === -Infinity) return -1;
|
||
if (!global_isFinite(value) || value === 0) return value;
|
||
return Math.exp(value) - 1;
|
||
},
|
||
|
||
hypot: function(x, y) {
|
||
var anyNaN = false;
|
||
var allZero = true;
|
||
var anyInfinity = false;
|
||
var numbers = [];
|
||
Array.prototype.every.call(arguments, function(arg) {
|
||
var num = Number(arg);
|
||
if (Number.isNaN(num)) anyNaN = true;
|
||
else if (num === Infinity || num === -Infinity) anyInfinity = true;
|
||
else if (num !== 0) allZero = false;
|
||
if (anyInfinity) {
|
||
return false;
|
||
} else if (!anyNaN) {
|
||
numbers.push(Math.abs(num));
|
||
}
|
||
return true;
|
||
});
|
||
if (anyInfinity) return Infinity;
|
||
if (anyNaN) return NaN;
|
||
if (allZero) return 0;
|
||
|
||
numbers.sort(function (a, b) { return b - a; });
|
||
var largest = numbers[0];
|
||
var divided = numbers.map(function (number) { return number / largest; });
|
||
var sum = divided.reduce(function (sum, number) { return sum += number * number; }, 0);
|
||
return largest * Math.sqrt(sum);
|
||
},
|
||
|
||
log2: function(value) {
|
||
return Math.log(value) * Math.LOG2E;
|
||
},
|
||
|
||
log10: function(value) {
|
||
return Math.log(value) * Math.LOG10E;
|
||
},
|
||
|
||
log1p: function(value) {
|
||
value = Number(value);
|
||
if (value < -1 || Number.isNaN(value)) return NaN;
|
||
if (value === 0 || value === Infinity) return value;
|
||
if (value === -1) return -Infinity;
|
||
var result = 0;
|
||
var n = 50;
|
||
|
||
if (value < 0 || value > 1) return Math.log(1 + value);
|
||
for (var i = 1; i < n; i++) {
|
||
if ((i % 2) === 0) {
|
||
result -= Math.pow(value, i) / i;
|
||
} else {
|
||
result += Math.pow(value, i) / i;
|
||
}
|
||
}
|
||
|
||
return result;
|
||
},
|
||
|
||
sign: function(value) {
|
||
var number = +value;
|
||
if (number === 0) return number;
|
||
if (Number.isNaN(number)) return number;
|
||
return number < 0 ? -1 : 1;
|
||
},
|
||
|
||
sinh: function(value) {
|
||
value = Number(value);
|
||
if (!global_isFinite(value) || value === 0) return value;
|
||
return (Math.exp(value) - Math.exp(-value)) / 2;
|
||
},
|
||
|
||
tanh: function(value) {
|
||
value = Number(value);
|
||
if (Number.isNaN(value) || value === 0) return value;
|
||
if (value === Infinity) return 1;
|
||
if (value === -Infinity) return -1;
|
||
return (Math.exp(value) - Math.exp(-value)) / (Math.exp(value) + Math.exp(-value));
|
||
},
|
||
|
||
trunc: function(value) {
|
||
var number = Number(value);
|
||
return number < 0 ? -Math.floor(-number) : Math.floor(number);
|
||
},
|
||
|
||
imul: function(x, y) {
|
||
// taken from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/imul
|
||
var ah = (x >>> 16) & 0xffff;
|
||
var al = x & 0xffff;
|
||
var bh = (y >>> 16) & 0xffff;
|
||
var bl = y & 0xffff;
|
||
// the shift by 0 fixes the sign on the high part
|
||
// the final |0 converts the unsigned value into a signed value
|
||
return ((al * bl) + (((ah * bl + al * bh) << 16) >>> 0)|0);
|
||
},
|
||
|
||
fround: function(x) {
|
||
if (x === 0 || x === Infinity || x === -Infinity || Number.isNaN(x)) {
|
||
return x;
|
||
}
|
||
var num = Number(x);
|
||
return numberConversion.toFloat32(num);
|
||
}
|
||
};
|
||
defineProperties(Math, MathShims);
|
||
|
||
if (Math.imul(0xffffffff, 5) !== -5) {
|
||
// Safari 6.1, at least, reports "0" for this value
|
||
Math.imul = MathShims.imul;
|
||
}
|
||
|
||
// Promises
|
||
// Simplest possible implementation; use a 3rd-party library if you
|
||
// want the best possible speed and/or long stack traces.
|
||
var PromiseShim = (function() {
|
||
|
||
var Promise, Promise$prototype;
|
||
|
||
ES.IsPromise = function(promise) {
|
||
if (!ES.TypeIsObject(promise)) {
|
||
return false;
|
||
}
|
||
if (!promise._promiseConstructor) {
|
||
// _promiseConstructor is a bit more unique than _status, so we'll
|
||
// check that instead of the [[PromiseStatus]] internal field.
|
||
return false;
|
||
}
|
||
if (promise._status === undefined) {
|
||
return false; // uninitialized
|
||
}
|
||
return true;
|
||
};
|
||
|
||
// "PromiseCapability" in the spec is what most promise implementations
|
||
// call a "deferred".
|
||
var PromiseCapability = function(C) {
|
||
if (!ES.IsCallable(C)) {
|
||
throw new TypeError('bad promise constructor');
|
||
}
|
||
var capability = this;
|
||
var resolver = function(resolve, reject) {
|
||
capability.resolve = resolve;
|
||
capability.reject = reject;
|
||
};
|
||
capability.promise = ES.Construct(C, [resolver]);
|
||
// see https://bugs.ecmascript.org/show_bug.cgi?id=2478
|
||
if (!capability.promise._es6construct) {
|
||
throw new TypeError('bad promise constructor');
|
||
}
|
||
if (!(ES.IsCallable(capability.resolve) &&
|
||
ES.IsCallable(capability.reject))) {
|
||
throw new TypeError('bad promise constructor');
|
||
}
|
||
};
|
||
|
||
// find an appropriate setImmediate-alike
|
||
var setTimeout = globals.setTimeout;
|
||
var makeZeroTimeout;
|
||
if (typeof window !== 'undefined' && ES.IsCallable(window.postMessage)) {
|
||
makeZeroTimeout = function() {
|
||
// from http://dbaron.org/log/20100309-faster-timeouts
|
||
var timeouts = [];
|
||
var messageName = "zero-timeout-message";
|
||
var setZeroTimeout = function(fn) {
|
||
timeouts.push(fn);
|
||
window.postMessage(messageName, "*");
|
||
};
|
||
var handleMessage = function(event) {
|
||
if (event.source == window && event.data == messageName) {
|
||
event.stopPropagation();
|
||
if (timeouts.length === 0) { return; }
|
||
var fn = timeouts.shift();
|
||
fn();
|
||
}
|
||
};
|
||
window.addEventListener("message", handleMessage, true);
|
||
return setZeroTimeout;
|
||
};
|
||
}
|
||
var makePromiseAsap = function() {
|
||
// An efficient task-scheduler based on a pre-existing Promise
|
||
// implementation, which we can use even if we override the
|
||
// global Promise below (in order to workaround bugs)
|
||
// https://github.com/Raynos/observ-hash/issues/2#issuecomment-35857671
|
||
var P = globals.Promise;
|
||
return P && P.resolve && function(task) {
|
||
return P.resolve().then(task);
|
||
};
|
||
};
|
||
var enqueue = ES.IsCallable(globals.setImmediate) ?
|
||
globals.setImmediate.bind(globals) :
|
||
typeof process === 'object' && process.nextTick ? process.nextTick :
|
||
makePromiseAsap() ||
|
||
(ES.IsCallable(makeZeroTimeout) ? makeZeroTimeout() :
|
||
function(task) { setTimeout(task, 0); }); // fallback
|
||
|
||
var triggerPromiseReactions = function(reactions, x) {
|
||
reactions.forEach(function(reaction) {
|
||
enqueue(function() {
|
||
// PromiseReactionTask
|
||
var handler = reaction.handler;
|
||
var capability = reaction.capability;
|
||
var resolve = capability.resolve;
|
||
var reject = capability.reject;
|
||
try {
|
||
var result = handler(x);
|
||
if (result === capability.promise) {
|
||
throw new TypeError('self resolution');
|
||
}
|
||
var updateResult =
|
||
updatePromiseFromPotentialThenable(result, capability);
|
||
if (!updateResult) {
|
||
resolve(result);
|
||
}
|
||
} catch (e) {
|
||
reject(e);
|
||
}
|
||
});
|
||
});
|
||
};
|
||
|
||
var updatePromiseFromPotentialThenable = function(x, capability) {
|
||
if (!ES.TypeIsObject(x)) {
|
||
return false;
|
||
}
|
||
var resolve = capability.resolve;
|
||
var reject = capability.reject;
|
||
try {
|
||
var then = x.then; // only one invocation of accessor
|
||
if (!ES.IsCallable(then)) { return false; }
|
||
then.call(x, resolve, reject);
|
||
} catch(e) {
|
||
reject(e);
|
||
}
|
||
return true;
|
||
};
|
||
|
||
var promiseResolutionHandler = function(promise, onFulfilled, onRejected){
|
||
return function(x) {
|
||
if (x === promise) {
|
||
return onRejected(new TypeError('self resolution'));
|
||
}
|
||
var C = promise._promiseConstructor;
|
||
var capability = new PromiseCapability(C);
|
||
var updateResult = updatePromiseFromPotentialThenable(x, capability);
|
||
if (updateResult) {
|
||
return capability.promise.then(onFulfilled, onRejected);
|
||
} else {
|
||
return onFulfilled(x);
|
||
}
|
||
};
|
||
};
|
||
|
||
Promise = function(resolver) {
|
||
var promise = this;
|
||
promise = emulateES6construct(promise);
|
||
if (!promise._promiseConstructor) {
|
||
// we use _promiseConstructor as a stand-in for the internal
|
||
// [[PromiseStatus]] field; it's a little more unique.
|
||
throw new TypeError('bad promise');
|
||
}
|
||
if (promise._status !== undefined) {
|
||
throw new TypeError('promise already initialized');
|
||
}
|
||
// see https://bugs.ecmascript.org/show_bug.cgi?id=2482
|
||
if (!ES.IsCallable(resolver)) {
|
||
throw new TypeError('not a valid resolver');
|
||
}
|
||
promise._status = 'unresolved';
|
||
promise._resolveReactions = [];
|
||
promise._rejectReactions = [];
|
||
|
||
var resolve = function(resolution) {
|
||
if (promise._status !== 'unresolved') { return; }
|
||
var reactions = promise._resolveReactions;
|
||
promise._result = resolution;
|
||
promise._resolveReactions = undefined;
|
||
promise._rejectReactions = undefined;
|
||
promise._status = 'has-resolution';
|
||
triggerPromiseReactions(reactions, resolution);
|
||
};
|
||
var reject = function(reason) {
|
||
if (promise._status !== 'unresolved') { return; }
|
||
var reactions = promise._rejectReactions;
|
||
promise._result = reason;
|
||
promise._resolveReactions = undefined;
|
||
promise._rejectReactions = undefined;
|
||
promise._status = 'has-rejection';
|
||
triggerPromiseReactions(reactions, reason);
|
||
};
|
||
try {
|
||
resolver(resolve, reject);
|
||
} catch (e) {
|
||
reject(e);
|
||
}
|
||
return promise;
|
||
};
|
||
Promise$prototype = Promise.prototype;
|
||
defineProperties(Promise, {
|
||
'@@create': function(obj) {
|
||
var constructor = this;
|
||
// AllocatePromise
|
||
// The `obj` parameter is a hack we use for es5
|
||
// compatibility.
|
||
var prototype = constructor.prototype || Promise$prototype;
|
||
obj = obj || create(prototype);
|
||
defineProperties(obj, {
|
||
_status: undefined,
|
||
_result: undefined,
|
||
_resolveReactions: undefined,
|
||
_rejectReactions: undefined,
|
||
_promiseConstructor: undefined
|
||
});
|
||
obj._promiseConstructor = constructor;
|
||
return obj;
|
||
}
|
||
});
|
||
|
||
var _promiseAllResolver = function(index, values, capability, remaining) {
|
||
var done = false;
|
||
return function(x) {
|
||
if (done) { return; } // protect against being called multiple times
|
||
done = true;
|
||
values[index] = x;
|
||
if ((--remaining.count) === 0) {
|
||
var resolve = capability.resolve;
|
||
resolve(values); // call w/ this===undefined
|
||
}
|
||
};
|
||
};
|
||
|
||
Promise.all = function(iterable) {
|
||
var C = this;
|
||
var capability = new PromiseCapability(C);
|
||
var resolve = capability.resolve;
|
||
var reject = capability.reject;
|
||
try {
|
||
if (!ES.IsIterable(iterable)) {
|
||
throw new TypeError('bad iterable');
|
||
}
|
||
var it = ES.GetIterator(iterable);
|
||
var values = [], remaining = { count: 1 };
|
||
for (var index = 0; ; index++) {
|
||
var next = ES.IteratorNext(it);
|
||
if (next.done) {
|
||
break;
|
||
}
|
||
var nextPromise = C.resolve(next.value);
|
||
var resolveElement = _promiseAllResolver(
|
||
index, values, capability, remaining
|
||
);
|
||
remaining.count++;
|
||
nextPromise.then(resolveElement, capability.reject);
|
||
}
|
||
if ((--remaining.count) === 0) {
|
||
resolve(values); // call w/ this===undefined
|
||
}
|
||
} catch (e) {
|
||
reject(e);
|
||
}
|
||
return capability.promise;
|
||
};
|
||
|
||
Promise.race = function(iterable) {
|
||
var C = this;
|
||
var capability = new PromiseCapability(C);
|
||
var resolve = capability.resolve;
|
||
var reject = capability.reject;
|
||
try {
|
||
if (!ES.IsIterable(iterable)) {
|
||
throw new TypeError('bad iterable');
|
||
}
|
||
var it = ES.GetIterator(iterable);
|
||
while (true) {
|
||
var next = ES.IteratorNext(it);
|
||
if (next.done) {
|
||
// If iterable has no items, resulting promise will never
|
||
// resolve; see:
|
||
// https://github.com/domenic/promises-unwrapping/issues/75
|
||
// https://bugs.ecmascript.org/show_bug.cgi?id=2515
|
||
break;
|
||
}
|
||
var nextPromise = C.resolve(next.value);
|
||
nextPromise.then(resolve, reject);
|
||
}
|
||
} catch (e) {
|
||
reject(e);
|
||
}
|
||
return capability.promise;
|
||
};
|
||
|
||
Promise.reject = function(reason) {
|
||
var C = this;
|
||
var capability = new PromiseCapability(C);
|
||
var reject = capability.reject;
|
||
reject(reason); // call with this===undefined
|
||
return capability.promise;
|
||
};
|
||
|
||
Promise.resolve = function(v) {
|
||
var C = this;
|
||
if (ES.IsPromise(v)) {
|
||
var constructor = v._promiseConstructor;
|
||
if (constructor === C) { return v; }
|
||
}
|
||
var capability = new PromiseCapability(C);
|
||
var resolve = capability.resolve;
|
||
resolve(v); // call with this===undefined
|
||
return capability.promise;
|
||
};
|
||
|
||
Promise.prototype['catch'] = function( onRejected ) {
|
||
return this.then(undefined, onRejected);
|
||
};
|
||
|
||
Promise.prototype.then = function( onFulfilled, onRejected ) {
|
||
var promise = this;
|
||
if (!ES.IsPromise(promise)) { throw new TypeError('not a promise'); }
|
||
// this.constructor not this._promiseConstructor; see
|
||
// https://bugs.ecmascript.org/show_bug.cgi?id=2513
|
||
var C = this.constructor;
|
||
var capability = new PromiseCapability(C);
|
||
if (!ES.IsCallable(onRejected)) {
|
||
onRejected = function(e) { throw e; };
|
||
}
|
||
if (!ES.IsCallable(onFulfilled)) {
|
||
onFulfilled = function(x) { return x; };
|
||
}
|
||
var resolutionHandler =
|
||
promiseResolutionHandler(promise, onFulfilled, onRejected);
|
||
var resolveReaction =
|
||
{ capability: capability, handler: resolutionHandler };
|
||
var rejectReaction =
|
||
{ capability: capability, handler: onRejected };
|
||
switch (promise._status) {
|
||
case 'unresolved':
|
||
promise._resolveReactions.push(resolveReaction);
|
||
promise._rejectReactions.push(rejectReaction);
|
||
break;
|
||
case 'has-resolution':
|
||
triggerPromiseReactions([resolveReaction], promise._result);
|
||
break;
|
||
case 'has-rejection':
|
||
triggerPromiseReactions([rejectReaction], promise._result);
|
||
break;
|
||
default:
|
||
throw new TypeError('unexpected');
|
||
}
|
||
return capability.promise;
|
||
};
|
||
|
||
return Promise;
|
||
})();
|
||
// export the Promise constructor.
|
||
defineProperties(globals, { Promise: PromiseShim });
|
||
// In Chrome 33 (and thereabouts) Promise is defined, but the
|
||
// implementation is buggy in a number of ways. Let's check subclassing
|
||
// support to see if we have a buggy implementation.
|
||
var promiseSupportsSubclassing = supportsSubclassing(globals.Promise, function(S) {
|
||
return S.resolve(42) instanceof S;
|
||
});
|
||
var promiseIgnoresNonFunctionThenCallbacks = (function () {
|
||
try {
|
||
globals.Promise.reject(42).then(null, 5).then(null, function () {});
|
||
return true;
|
||
} catch (ex) {
|
||
return false;
|
||
}
|
||
}());
|
||
if (!promiseSupportsSubclassing || !promiseIgnoresNonFunctionThenCallbacks) {
|
||
globals.Promise = PromiseShim;
|
||
}
|
||
|
||
// Map and Set require a true ES5 environment
|
||
if (supportsDescriptors) {
|
||
|
||
var fastkey = function fastkey(key) {
|
||
var type = typeof key;
|
||
if (type === 'string') {
|
||
return '$' + key;
|
||
} else if (type === 'number') {
|
||
// note that -0 will get coerced to "0" when used as a property key
|
||
return key;
|
||
}
|
||
return null;
|
||
};
|
||
|
||
var emptyObject = function emptyObject() {
|
||
// accomodate some older not-quite-ES5 browsers
|
||
return Object.create ? Object.create(null) : {};
|
||
};
|
||
|
||
var collectionShims = {
|
||
Map: (function() {
|
||
|
||
var empty = {};
|
||
|
||
function MapEntry(key, value) {
|
||
this.key = key;
|
||
this.value = value;
|
||
this.next = null;
|
||
this.prev = null;
|
||
}
|
||
|
||
MapEntry.prototype.isRemoved = function() {
|
||
return this.key === empty;
|
||
};
|
||
|
||
function MapIterator(map, kind) {
|
||
this.head = map._head;
|
||
this.i = this.head;
|
||
this.kind = kind;
|
||
}
|
||
|
||
MapIterator.prototype = {
|
||
next: function() {
|
||
var i = this.i, kind = this.kind, head = this.head, result;
|
||
if (this.i === undefined) {
|
||
return { value: undefined, done: true };
|
||
}
|
||
while (i.isRemoved() && i !== head) {
|
||
// back up off of removed entries
|
||
i = i.prev;
|
||
}
|
||
// advance to next unreturned element.
|
||
while (i.next !== head) {
|
||
i = i.next;
|
||
if (!i.isRemoved()) {
|
||
if (kind === "key") {
|
||
result = i.key;
|
||
} else if (kind === "value") {
|
||
result = i.value;
|
||
} else {
|
||
result = [i.key, i.value];
|
||
}
|
||
this.i = i;
|
||
return { value: result, done: false };
|
||
}
|
||
}
|
||
// once the iterator is done, it is done forever.
|
||
this.i = undefined;
|
||
return { value: undefined, done: true };
|
||
}
|
||
};
|
||
addIterator(MapIterator.prototype);
|
||
|
||
function Map() {
|
||
var map = this;
|
||
map = emulateES6construct(map);
|
||
if (!map._es6map) {
|
||
throw new TypeError('bad map');
|
||
}
|
||
|
||
var head = new MapEntry(null, null);
|
||
// circular doubly-linked list.
|
||
head.next = head.prev = head;
|
||
|
||
defineProperties(map, {
|
||
'_head': head,
|
||
'_storage': emptyObject(),
|
||
'_size': 0
|
||
});
|
||
|
||
// Optionally initialize map from iterable
|
||
var iterable = arguments[0];
|
||
if (iterable !== undefined && iterable !== null) {
|
||
var it = ES.GetIterator(iterable);
|
||
var adder = map.set;
|
||
if (!ES.IsCallable(adder)) { throw new TypeError('bad map'); }
|
||
while (true) {
|
||
var next = ES.IteratorNext(it);
|
||
if (next.done) { break; }
|
||
var nextItem = next.value;
|
||
if (!ES.TypeIsObject(nextItem)) {
|
||
throw new TypeError('expected iterable of pairs');
|
||
}
|
||
adder.call(map, nextItem[0], nextItem[1]);
|
||
}
|
||
}
|
||
return map;
|
||
}
|
||
var Map$prototype = Map.prototype;
|
||
defineProperties(Map, {
|
||
'@@create': function(obj) {
|
||
var constructor = this;
|
||
var prototype = constructor.prototype || Map$prototype;
|
||
obj = obj || create(prototype);
|
||
defineProperties(obj, { _es6map: true });
|
||
return obj;
|
||
}
|
||
});
|
||
|
||
Object.defineProperty(Map.prototype, 'size', {
|
||
configurable: true,
|
||
enumerable: false,
|
||
get: function() {
|
||
if (typeof this._size === 'undefined') {
|
||
throw new TypeError('size method called on incompatible Map');
|
||
}
|
||
return this._size;
|
||
}
|
||
});
|
||
|
||
defineProperties(Map.prototype, {
|
||
get: function(key) {
|
||
var fkey = fastkey(key);
|
||
if (fkey !== null) {
|
||
// fast O(1) path
|
||
var entry = this._storage[fkey];
|
||
return entry ? entry.value : undefined;
|
||
}
|
||
var head = this._head, i = head;
|
||
while ((i = i.next) !== head) {
|
||
if (ES.SameValueZero(i.key, key)) {
|
||
return i.value;
|
||
}
|
||
}
|
||
return undefined;
|
||
},
|
||
|
||
has: function(key) {
|
||
var fkey = fastkey(key);
|
||
if (fkey !== null) {
|
||
// fast O(1) path
|
||
return typeof this._storage[fkey] !== 'undefined';
|
||
}
|
||
var head = this._head, i = head;
|
||
while ((i = i.next) !== head) {
|
||
if (ES.SameValueZero(i.key, key)) {
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
},
|
||
|
||
set: function(key, value) {
|
||
var head = this._head, i = head, entry;
|
||
var fkey = fastkey(key);
|
||
if (fkey !== null) {
|
||
// fast O(1) path
|
||
if (typeof this._storage[fkey] !== 'undefined') {
|
||
this._storage[fkey].value = value;
|
||
return;
|
||
} else {
|
||
entry = this._storage[fkey] = new MapEntry(key, value);
|
||
i = head.prev;
|
||
// fall through
|
||
}
|
||
}
|
||
while ((i = i.next) !== head) {
|
||
if (ES.SameValueZero(i.key, key)) {
|
||
i.value = value;
|
||
return;
|
||
}
|
||
}
|
||
entry = entry || new MapEntry(key, value);
|
||
if (ES.SameValue(-0, key)) {
|
||
entry.key = +0; // coerce -0 to +0 in entry
|
||
}
|
||
entry.next = this._head;
|
||
entry.prev = this._head.prev;
|
||
entry.prev.next = entry;
|
||
entry.next.prev = entry;
|
||
this._size += 1;
|
||
},
|
||
|
||
'delete': function(key) {
|
||
var head = this._head, i = head;
|
||
var fkey = fastkey(key);
|
||
if (fkey !== null) {
|
||
// fast O(1) path
|
||
if (typeof this._storage[fkey] === 'undefined') {
|
||
return false;
|
||
}
|
||
i = this._storage[fkey].prev;
|
||
delete this._storage[fkey];
|
||
// fall through
|
||
}
|
||
while ((i = i.next) !== head) {
|
||
if (ES.SameValueZero(i.key, key)) {
|
||
i.key = i.value = empty;
|
||
i.prev.next = i.next;
|
||
i.next.prev = i.prev;
|
||
this._size -= 1;
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
},
|
||
|
||
clear: function() {
|
||
this._size = 0;
|
||
this._storage = emptyObject();
|
||
var head = this._head, i = head, p = i.next;
|
||
while ((i = p) !== head) {
|
||
i.key = i.value = empty;
|
||
p = i.next;
|
||
i.next = i.prev = head;
|
||
}
|
||
head.next = head.prev = head;
|
||
},
|
||
|
||
keys: function() {
|
||
return new MapIterator(this, "key");
|
||
},
|
||
|
||
values: function() {
|
||
return new MapIterator(this, "value");
|
||
},
|
||
|
||
entries: function() {
|
||
return new MapIterator(this, "key+value");
|
||
},
|
||
|
||
forEach: function(callback) {
|
||
var context = arguments.length > 1 ? arguments[1] : null;
|
||
var it = this.entries();
|
||
for (var entry = it.next(); !entry.done; entry = it.next()) {
|
||
callback.call(context, entry.value[1], entry.value[0], this);
|
||
}
|
||
}
|
||
});
|
||
addIterator(Map.prototype, function() { return this.entries(); });
|
||
|
||
return Map;
|
||
})(),
|
||
|
||
Set: (function() {
|
||
// Creating a Map is expensive. To speed up the common case of
|
||
// Sets containing only string or numeric keys, we use an object
|
||
// as backing storage and lazily create a full Map only when
|
||
// required.
|
||
var SetShim = function Set() {
|
||
var set = this;
|
||
set = emulateES6construct(set);
|
||
if (!set._es6set) {
|
||
throw new TypeError('bad set');
|
||
}
|
||
|
||
defineProperties(set, {
|
||
'[[SetData]]': null,
|
||
'_storage': emptyObject()
|
||
});
|
||
|
||
// Optionally initialize map from iterable
|
||
var iterable = arguments[0];
|
||
if (iterable !== undefined && iterable !== null) {
|
||
var it = ES.GetIterator(iterable);
|
||
var adder = set.add;
|
||
if (!ES.IsCallable(adder)) { throw new TypeError('bad set'); }
|
||
while (true) {
|
||
var next = ES.IteratorNext(it);
|
||
if (next.done) { break; }
|
||
var nextItem = next.value;
|
||
adder.call(set, nextItem);
|
||
}
|
||
}
|
||
return set;
|
||
};
|
||
var Set$prototype = SetShim.prototype;
|
||
defineProperties(SetShim, {
|
||
'@@create': function(obj) {
|
||
var constructor = this;
|
||
var prototype = constructor.prototype || Set$prototype;
|
||
obj = obj || create(prototype);
|
||
defineProperties(obj, { _es6set: true });
|
||
return obj;
|
||
}
|
||
});
|
||
|
||
// Switch from the object backing storage to a full Map.
|
||
var ensureMap = function ensureMap(set) {
|
||
if (!set['[[SetData]]']) {
|
||
var m = set['[[SetData]]'] = new collectionShims.Map();
|
||
Object.keys(set._storage).forEach(function(k) {
|
||
// fast check for leading '$'
|
||
if (k.charCodeAt(0) === 36) {
|
||
k = k.substring(1);
|
||
} else {
|
||
k = +k;
|
||
}
|
||
m.set(k, k);
|
||
});
|
||
set._storage = null; // free old backing storage
|
||
}
|
||
};
|
||
|
||
Object.defineProperty(SetShim.prototype, 'size', {
|
||
configurable: true,
|
||
enumerable: false,
|
||
get: function() {
|
||
if (typeof this._storage === 'undefined') {
|
||
// https://github.com/paulmillr/es6-shim/issues/176
|
||
throw new TypeError('size method called on incompatible Set');
|
||
}
|
||
ensureMap(this);
|
||
return this['[[SetData]]'].size;
|
||
}
|
||
});
|
||
|
||
defineProperties(SetShim.prototype, {
|
||
has: function(key) {
|
||
var fkey;
|
||
if (this._storage && (fkey = fastkey(key)) !== null) {
|
||
return !!this._storage[fkey];
|
||
}
|
||
ensureMap(this);
|
||
return this['[[SetData]]'].has(key);
|
||
},
|
||
|
||
add: function(key) {
|
||
var fkey;
|
||
if (this._storage && (fkey = fastkey(key)) !== null) {
|
||
this._storage[fkey]=true;
|
||
return;
|
||
}
|
||
ensureMap(this);
|
||
return this['[[SetData]]'].set(key, key);
|
||
},
|
||
|
||
'delete': function(key) {
|
||
var fkey;
|
||
if (this._storage && (fkey = fastkey(key)) !== null) {
|
||
delete this._storage[fkey];
|
||
return;
|
||
}
|
||
ensureMap(this);
|
||
return this['[[SetData]]']['delete'](key);
|
||
},
|
||
|
||
clear: function() {
|
||
if (this._storage) {
|
||
this._storage = emptyObject();
|
||
return;
|
||
}
|
||
return this['[[SetData]]'].clear();
|
||
},
|
||
|
||
keys: function() {
|
||
ensureMap(this);
|
||
return this['[[SetData]]'].keys();
|
||
},
|
||
|
||
values: function() {
|
||
ensureMap(this);
|
||
return this['[[SetData]]'].values();
|
||
},
|
||
|
||
entries: function() {
|
||
ensureMap(this);
|
||
return this['[[SetData]]'].entries();
|
||
},
|
||
|
||
forEach: function(callback) {
|
||
var context = arguments.length > 1 ? arguments[1] : null;
|
||
var entireSet = this;
|
||
ensureMap(this);
|
||
this['[[SetData]]'].forEach(function(value, key) {
|
||
callback.call(context, key, key, entireSet);
|
||
});
|
||
}
|
||
});
|
||
addIterator(SetShim.prototype, function() { return this.values(); });
|
||
|
||
return SetShim;
|
||
})()
|
||
};
|
||
defineProperties(globals, collectionShims);
|
||
|
||
if (globals.Map || globals.Set) {
|
||
/*
|
||
- In Firefox < 23, Map#size is a function.
|
||
- In all current Firefox, Set#entries/keys/values & Map#clear do not exist
|
||
- https://bugzilla.mozilla.org/show_bug.cgi?id=869996
|
||
- In Firefox 24, Map and Set do not implement forEach
|
||
- In Firefox 25 at least, Map and Set are callable without "new"
|
||
*/
|
||
if (
|
||
typeof globals.Map.prototype.clear !== 'function' ||
|
||
new globals.Set().size !== 0 ||
|
||
new globals.Map().size !== 0 ||
|
||
typeof globals.Map.prototype.keys !== 'function' ||
|
||
typeof globals.Set.prototype.keys !== 'function' ||
|
||
typeof globals.Map.prototype.forEach !== 'function' ||
|
||
typeof globals.Set.prototype.forEach !== 'function' ||
|
||
isCallableWithoutNew(globals.Map) ||
|
||
isCallableWithoutNew(globals.Set) ||
|
||
!supportsSubclassing(globals.Map, function(M) {
|
||
return (new M([])) instanceof M;
|
||
})
|
||
) {
|
||
globals.Map = collectionShims.Map;
|
||
globals.Set = collectionShims.Set;
|
||
}
|
||
}
|
||
// Shim incomplete iterator implementations.
|
||
addIterator(Object.getPrototypeOf((new globals.Map()).keys()));
|
||
addIterator(Object.getPrototypeOf((new globals.Set()).keys()));
|
||
}
|
||
};
|
||
|
||
main(); // CommonJS and <script>
|
||
});
|
||
|