--- /dev/null
+'use strict';
+var LIBRARY = require('./_library')
+ , global = require('./_global')
+ , ctx = require('./_ctx')
+ , classof = require('./_classof')
+ , $export = require('./_export')
+ , isObject = require('./_is-object')
+ , aFunction = require('./_a-function')
+ , anInstance = require('./_an-instance')
+ , forOf = require('./_for-of')
+ , speciesConstructor = require('./_species-constructor')
+ , task = require('./_task').set
+ , microtask = require('./_microtask')()
+ , PROMISE = 'Promise'
+ , TypeError = global.TypeError
+ , process = global.process
+ , $Promise = global[PROMISE]
+ , process = global.process
+ , isNode = classof(process) == 'process'
+ , empty = function(){ /* empty */ }
+ , Internal, GenericPromiseCapability, Wrapper;
+
+var USE_NATIVE = !!function(){
+ try {
+ // correct subclassing with @@species support
+ var promise = $Promise.resolve(1)
+ , FakePromise = (promise.constructor = {})[require('./_wks')('species')] = function(exec){ exec(empty, empty); };
+ // unhandled rejections tracking support, NodeJS Promise without it fails @@species test
+ return (isNode || typeof PromiseRejectionEvent == 'function') && promise.then(empty) instanceof FakePromise;
+ } catch(e){ /* empty */ }
+}();
+
+// helpers
+var sameConstructor = function(a, b){
+ // with library wrapper special case
+ return a === b || a === $Promise && b === Wrapper;
+};
+var isThenable = function(it){
+ var then;
+ return isObject(it) && typeof (then = it.then) == 'function' ? then : false;
+};
+var newPromiseCapability = function(C){
+ return sameConstructor($Promise, C)
+ ? new PromiseCapability(C)
+ : new GenericPromiseCapability(C);
+};
+var PromiseCapability = GenericPromiseCapability = function(C){
+ var resolve, reject;
+ this.promise = new C(function($$resolve, $$reject){
+ if(resolve !== undefined || reject !== undefined)throw TypeError('Bad Promise constructor');
+ resolve = $$resolve;
+ reject = $$reject;
+ });
+ this.resolve = aFunction(resolve);
+ this.reject = aFunction(reject);
+};
+var perform = function(exec){
+ try {
+ exec();
+ } catch(e){
+ return {error: e};
+ }
+};
+var notify = function(promise, isReject){
+ if(promise._n)return;
+ promise._n = true;
+ var chain = promise._c;
+ microtask(function(){
+ var value = promise._v
+ , ok = promise._s == 1
+ , i = 0;
+ var run = function(reaction){
+ var handler = ok ? reaction.ok : reaction.fail
+ , resolve = reaction.resolve
+ , reject = reaction.reject
+ , domain = reaction.domain
+ , result, then;
+ try {
+ if(handler){
+ if(!ok){
+ if(promise._h == 2)onHandleUnhandled(promise);
+ promise._h = 1;
+ }
+ if(handler === true)result = value;
+ else {
+ if(domain)domain.enter();
+ result = handler(value);
+ if(domain)domain.exit();
+ }
+ if(result === reaction.promise){
+ reject(TypeError('Promise-chain cycle'));
+ } else if(then = isThenable(result)){
+ then.call(result, resolve, reject);
+ } else resolve(result);
+ } else reject(value);
+ } catch(e){
+ reject(e);
+ }
+ };
+ while(chain.length > i)run(chain[i++]); // variable length - can't use forEach
+ promise._c = [];
+ promise._n = false;
+ if(isReject && !promise._h)onUnhandled(promise);
+ });
+};
+var onUnhandled = function(promise){
+ task.call(global, function(){
+ var value = promise._v
+ , abrupt, handler, console;
+ if(isUnhandled(promise)){
+ abrupt = perform(function(){
+ if(isNode){
+ process.emit('unhandledRejection', value, promise);
+ } else if(handler = global.onunhandledrejection){
+ handler({promise: promise, reason: value});
+ } else if((console = global.console) && console.error){
+ console.error('Unhandled promise rejection', value);
+ }
+ });
+ // Browsers should not trigger `rejectionHandled` event if it was handled here, NodeJS - should
+ promise._h = isNode || isUnhandled(promise) ? 2 : 1;
+ } promise._a = undefined;
+ if(abrupt)throw abrupt.error;
+ });
+};
+var isUnhandled = function(promise){
+ if(promise._h == 1)return false;
+ var chain = promise._a || promise._c
+ , i = 0
+ , reaction;
+ while(chain.length > i){
+ reaction = chain[i++];
+ if(reaction.fail || !isUnhandled(reaction.promise))return false;
+ } return true;
+};
+var onHandleUnhandled = function(promise){
+ task.call(global, function(){
+ var handler;
+ if(isNode){
+ process.emit('rejectionHandled', promise);
+ } else if(handler = global.onrejectionhandled){
+ handler({promise: promise, reason: promise._v});
+ }
+ });
+};
+var $reject = function(value){
+ var promise = this;
+ if(promise._d)return;
+ promise._d = true;
+ promise = promise._w || promise; // unwrap
+ promise._v = value;
+ promise._s = 2;
+ if(!promise._a)promise._a = promise._c.slice();
+ notify(promise, true);
+};
+var $resolve = function(value){
+ var promise = this
+ , then;
+ if(promise._d)return;
+ promise._d = true;
+ promise = promise._w || promise; // unwrap
+ try {
+ if(promise === value)throw TypeError("Promise can't be resolved itself");
+ if(then = isThenable(value)){
+ microtask(function(){
+ var wrapper = {_w: promise, _d: false}; // wrap
+ try {
+ then.call(value, ctx($resolve, wrapper, 1), ctx($reject, wrapper, 1));
+ } catch(e){
+ $reject.call(wrapper, e);
+ }
+ });
+ } else {
+ promise._v = value;
+ promise._s = 1;
+ notify(promise, false);
+ }
+ } catch(e){
+ $reject.call({_w: promise, _d: false}, e); // wrap
+ }
+};
+
+// constructor polyfill
+if(!USE_NATIVE){
+ // 25.4.3.1 Promise(executor)
+ $Promise = function Promise(executor){
+ anInstance(this, $Promise, PROMISE, '_h');
+ aFunction(executor);
+ Internal.call(this);
+ try {
+ executor(ctx($resolve, this, 1), ctx($reject, this, 1));
+ } catch(err){
+ $reject.call(this, err);
+ }
+ };
+ Internal = function Promise(executor){
+ this._c = []; // <- awaiting reactions
+ this._a = undefined; // <- checked in isUnhandled reactions
+ this._s = 0; // <- state
+ this._d = false; // <- done
+ this._v = undefined; // <- value
+ this._h = 0; // <- rejection state, 0 - default, 1 - handled, 2 - unhandled
+ this._n = false; // <- notify
+ };
+ Internal.prototype = require('./_redefine-all')($Promise.prototype, {
+ // 25.4.5.3 Promise.prototype.then(onFulfilled, onRejected)
+ then: function then(onFulfilled, onRejected){
+ var reaction = newPromiseCapability(speciesConstructor(this, $Promise));
+ reaction.ok = typeof onFulfilled == 'function' ? onFulfilled : true;
+ reaction.fail = typeof onRejected == 'function' && onRejected;
+ reaction.domain = isNode ? process.domain : undefined;
+ this._c.push(reaction);
+ if(this._a)this._a.push(reaction);
+ if(this._s)notify(this, false);
+ return reaction.promise;
+ },
+ // 25.4.5.1 Promise.prototype.catch(onRejected)
+ 'catch': function(onRejected){
+ return this.then(undefined, onRejected);
+ }
+ });
+ PromiseCapability = function(){
+ var promise = new Internal;
+ this.promise = promise;
+ this.resolve = ctx($resolve, promise, 1);
+ this.reject = ctx($reject, promise, 1);
+ };
+}
+
+$export($export.G + $export.W + $export.F * !USE_NATIVE, {Promise: $Promise});
+require('./_set-to-string-tag')($Promise, PROMISE);
+require('./_set-species')(PROMISE);
+Wrapper = require('./_core')[PROMISE];
+
+// statics
+$export($export.S + $export.F * !USE_NATIVE, PROMISE, {
+ // 25.4.4.5 Promise.reject(r)
+ reject: function reject(r){
+ var capability = newPromiseCapability(this)
+ , $$reject = capability.reject;
+ $$reject(r);
+ return capability.promise;
+ }
+});
+$export($export.S + $export.F * (LIBRARY || !USE_NATIVE), PROMISE, {
+ // 25.4.4.6 Promise.resolve(x)
+ resolve: function resolve(x){
+ // instanceof instead of internal slot check because we should fix it without replacement native Promise core
+ if(x instanceof $Promise && sameConstructor(x.constructor, this))return x;
+ var capability = newPromiseCapability(this)
+ , $$resolve = capability.resolve;
+ $$resolve(x);
+ return capability.promise;
+ }
+});
+$export($export.S + $export.F * !(USE_NATIVE && require('./_iter-detect')(function(iter){
+ $Promise.all(iter)['catch'](empty);
+})), PROMISE, {
+ // 25.4.4.1 Promise.all(iterable)
+ all: function all(iterable){
+ var C = this
+ , capability = newPromiseCapability(C)
+ , resolve = capability.resolve
+ , reject = capability.reject;
+ var abrupt = perform(function(){
+ var values = []
+ , index = 0
+ , remaining = 1;
+ forOf(iterable, false, function(promise){
+ var $index = index++
+ , alreadyCalled = false;
+ values.push(undefined);
+ remaining++;
+ C.resolve(promise).then(function(value){
+ if(alreadyCalled)return;
+ alreadyCalled = true;
+ values[$index] = value;
+ --remaining || resolve(values);
+ }, reject);
+ });
+ --remaining || resolve(values);
+ });
+ if(abrupt)reject(abrupt.error);
+ return capability.promise;
+ },
+ // 25.4.4.4 Promise.race(iterable)
+ race: function race(iterable){
+ var C = this
+ , capability = newPromiseCapability(C)
+ , reject = capability.reject;
+ var abrupt = perform(function(){
+ forOf(iterable, false, function(promise){
+ C.resolve(promise).then(capability.resolve, reject);
+ });
+ });
+ if(abrupt)reject(abrupt.error);
+ return capability.promise;
+ }
+});
\ No newline at end of file
projects / yaffs-website / blobdiff