First Committ
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Paolo Arena
368
public/js/promise.js
Executable file
368
public/js/promise.js
Executable file
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/**
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* setImmediate polyfill v1.0.1, supports IE9+
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* © 2014–2015 Dmitry Korobkin
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* Released under the MIT license
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* github.com/Octane/setImmediate
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*/
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window.setImmediate || (function () {
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let uid = 0;
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const storage = {};
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let firstCall = true;
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const { slice } = Array.prototype;
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const message = 'setImmediatePolyfillMessage';
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function fastApply(args) {
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const func = args[0];
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switch (args.length) {
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case 1:
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return func();
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case 2:
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return func(args[1]);
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case 3:
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return func(args[1], args[2]);
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}
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return func.apply(window, slice.call(args, 1));
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}
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function callback(event) {
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const key = event.data;
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let data;
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if (typeof key === 'string' && key.indexOf(message) == 0) {
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data = storage[key];
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if (data) {
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delete storage[key];
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fastApply(data);
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}
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}
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}
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window.setImmediate = function setImmediate() {
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const id = uid++;
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const key = message + id;
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let i = arguments.length;
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const args = new Array(i);
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while (i--) {
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args[i] = arguments[i];
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}
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storage[key] = args;
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if (firstCall) {
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firstCall = false;
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window.addEventListener('message', callback);
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}
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window.postMessage(key, '*');
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return id;
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};
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window.clearImmediate = function clearImmediate(id) {
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delete storage[message + id];
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};
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}());
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/**
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* Promise polyfill v1.0.10
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* requires setImmediate
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*
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* © 2014–2015 Dmitry Korobkin
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* Released under the MIT license
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* github.com/Octane/Promise
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*/
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(function (global) {
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const STATUS = '[[PromiseStatus]]';
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const VALUE = '[[PromiseValue]]';
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const ON_FUlFILLED = '[[OnFulfilled]]';
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const ON_REJECTED = '[[OnRejected]]';
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const ORIGINAL_ERROR = '[[OriginalError]]';
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const PENDING = 'pending';
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const INTERNAL_PENDING = 'internal pending';
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const FULFILLED = 'fulfilled';
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const REJECTED = 'rejected';
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const NOT_ARRAY = 'not an array.';
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const REQUIRES_NEW = 'constructor Promise requires "new".';
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const CHAINING_CYCLE = 'then() cannot return same Promise that it resolves.';
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const setImmediate = global.setImmediate || require('timers').setImmediate;
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const isArray = Array.isArray || function (anything) {
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return Object.prototype.toString.call(anything) == '[object Array]';
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};
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function InternalError(originalError) {
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this[ORIGINAL_ERROR] = originalError;
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}
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function isInternalError(anything) {
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return anything instanceof InternalError;
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}
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function isObject(anything) {
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// Object.create(null) instanceof Object → false
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return Object(anything) === anything;
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}
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function isCallable(anything) {
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return typeof anything === 'function';
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}
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function isPromise(anything) {
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return anything instanceof Promise;
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}
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function identity(value) {
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return value;
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}
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function thrower(reason) {
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throw reason;
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}
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function enqueue(promise, onFulfilled, onRejected) {
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if (!promise[ON_FUlFILLED]) {
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promise[ON_FUlFILLED] = [];
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promise[ON_REJECTED] = [];
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}
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promise[ON_FUlFILLED].push(onFulfilled);
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promise[ON_REJECTED].push(onRejected);
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}
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function clearAllQueues(promise) {
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delete promise[ON_FUlFILLED];
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delete promise[ON_REJECTED];
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}
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function callEach(queue) {
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let i;
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const { length } = queue;
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for (i = 0; i < length; i++) {
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queue[i]();
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}
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}
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function call(resolve, reject, value) {
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const anything = toPromise(value);
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if (isPromise(anything)) {
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anything.then(resolve, reject);
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} else if (isInternalError(anything)) {
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reject(anything[ORIGINAL_ERROR]);
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} else {
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resolve(value);
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}
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}
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function toPromise(anything) {
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let then;
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if (isPromise(anything)) {
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return anything;
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}
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if (isObject(anything)) {
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try {
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then = anything.then;
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} catch (error) {
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return new InternalError(error);
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}
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if (isCallable(then)) {
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return new Promise((resolve, reject) => {
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setImmediate(() => {
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try {
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then.call(anything, resolve, reject);
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} catch (error) {
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reject(error);
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}
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});
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});
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}
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}
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return null;
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}
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function resolvePromise(promise, resolver) {
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function resolve(value) {
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if (promise[STATUS] == PENDING) {
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fulfillPromise(promise, value);
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}
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}
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function reject(reason) {
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if (promise[STATUS] == PENDING) {
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rejectPromise(promise, reason);
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}
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}
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try {
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resolver(resolve, reject);
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} catch (error) {
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reject(error);
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}
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}
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function fulfillPromise(promise, value) {
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let queue;
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const anything = toPromise(value);
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if (isPromise(anything)) {
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promise[STATUS] = INTERNAL_PENDING;
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anything.then(
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(value) => {
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fulfillPromise(promise, value);
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},
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(reason) => {
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rejectPromise(promise, reason);
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},
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);
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} else if (isInternalError(anything)) {
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rejectPromise(promise, anything[ORIGINAL_ERROR]);
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} else {
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promise[STATUS] = FULFILLED;
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promise[VALUE] = value;
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queue = promise[ON_FUlFILLED];
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if (queue && queue.length) {
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clearAllQueues(promise);
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callEach(queue);
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}
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}
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}
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function rejectPromise(promise, reason) {
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const queue = promise[ON_REJECTED];
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promise[STATUS] = REJECTED;
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promise[VALUE] = reason;
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if (queue && queue.length) {
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clearAllQueues(promise);
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callEach(queue);
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}
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}
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function Promise(resolver) {
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const promise = this;
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if (!isPromise(promise)) {
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throw new TypeError(REQUIRES_NEW);
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}
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promise[STATUS] = PENDING;
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promise[VALUE] = undefined;
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resolvePromise(promise, resolver);
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}
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Promise.prototype.then = function (onFulfilled, onRejected) {
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const promise = this;
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let nextPromise;
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onFulfilled = isCallable(onFulfilled) ? onFulfilled : identity;
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onRejected = isCallable(onRejected) ? onRejected : thrower;
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nextPromise = new Promise((resolve, reject) => {
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function tryCall(func) {
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let value;
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try {
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value = func(promise[VALUE]);
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} catch (error) {
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reject(error);
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return;
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}
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if (value === nextPromise) {
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reject(new TypeError(CHAINING_CYCLE));
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} else {
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call(resolve, reject, value);
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}
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}
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function asyncOnFulfilled() {
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setImmediate(tryCall, onFulfilled);
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}
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function asyncOnRejected() {
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setImmediate(tryCall, onRejected);
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}
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switch (promise[STATUS]) {
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case FULFILLED:
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asyncOnFulfilled();
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break;
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case REJECTED:
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asyncOnRejected();
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break;
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default:
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enqueue(promise, asyncOnFulfilled, asyncOnRejected);
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}
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});
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return nextPromise;
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};
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Promise.prototype.catch = function (onRejected) {
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return this.then(identity, onRejected);
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};
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Promise.resolve = function (value) {
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const anything = toPromise(value);
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if (isPromise(anything)) {
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return anything;
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}
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return new Promise((resolve, reject) => {
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if (isInternalError(anything)) {
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reject(anything[ORIGINAL_ERROR]);
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} else {
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resolve(value);
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}
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});
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};
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Promise.reject = function (reason) {
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return new Promise((resolve, reject) => {
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reject(reason);
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});
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};
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Promise.race = function (values) {
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return new Promise((resolve, reject) => {
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let i;
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let length;
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if (isArray(values)) {
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length = values.length;
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for (i = 0; i < length; i++) {
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call(resolve, reject, values[i]);
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}
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} else {
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reject(new TypeError(NOT_ARRAY));
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}
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});
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};
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Promise.all = function (values) {
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return new Promise((resolve, reject) => {
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let fulfilledCount = 0;
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let promiseCount = 0;
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let anything;
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let length;
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let value;
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let i;
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if (isArray(values)) {
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values = values.slice(0);
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length = values.length;
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for (i = 0; i < length; i++) {
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value = values[i];
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anything = toPromise(value);
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if (isPromise(anything)) {
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promiseCount++;
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anything.then(
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(function (index) {
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return function (value) {
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values[index] = value;
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fulfilledCount++;
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if (fulfilledCount == promiseCount) {
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resolve(values);
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}
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};
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}(i)),
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reject,
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);
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} else if (isInternalError(anything)) {
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reject(anything[ORIGINAL_ERROR]);
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} else {
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// [1, , 3] → [1, undefined, 3]
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values[i] = value;
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}
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}
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if (!promiseCount) {
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resolve(values);
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}
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} else {
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reject(new TypeError(NOT_ARRAY));
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}
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});
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};
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if (typeof module !== 'undefined' && module.exports) {
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module.exports = global.Promise || Promise;
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} else if (!global.Promise) {
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global.Promise = Promise;
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}
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}(this));
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