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zone.js
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zone.js
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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory() :
typeof define === 'function' && define.amd ? define(factory) :
(factory());
}(this, (function () { 'use strict';
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
var Zone$1 = (function (global) {
var performance = global['performance'];
function mark(name) {
performance && performance['mark'] && performance['mark'](name);
}
function performanceMeasure(name, label) {
performance && performance['measure'] && performance['measure'](name, label);
}
mark('Zone');
var checkDuplicate = global[('__zone_symbol__forceDuplicateZoneCheck')] === true;
if (global['Zone']) {
// if global['Zone'] already exists (maybe zone.js was already loaded or
// some other lib also registered a global object named Zone), we may need
// to throw an error, but sometimes user may not want this error.
// For example,
// we have two web pages, page1 includes zone.js, page2 doesn't.
// and the 1st time user load page1 and page2, everything work fine,
// but when user load page2 again, error occurs because global['Zone'] already exists.
// so we add a flag to let user choose whether to throw this error or not.
// By default, if existing Zone is from zone.js, we will not throw the error.
if (checkDuplicate || typeof global['Zone'].__symbol__ !== 'function') {
throw new Error('Zone already loaded.');
}
else {
return global['Zone'];
}
}
var Zone = /** @class */ (function () {
function Zone(parent, zoneSpec) {
this._parent = parent;
this._name = zoneSpec ? zoneSpec.name || 'unnamed' : '<root>';
this._properties = zoneSpec && zoneSpec.properties || {};
this._zoneDelegate =
new ZoneDelegate(this, this._parent && this._parent._zoneDelegate, zoneSpec);
}
Zone.assertZonePatched = function () {
if (global['Promise'] !== patches['ZoneAwarePromise']) {
throw new Error('Zone.js has detected that ZoneAwarePromise `(window|global).Promise` ' +
'has been overwritten.\n' +
'Most likely cause is that a Promise polyfill has been loaded ' +
'after Zone.js (Polyfilling Promise api is not necessary when zone.js is loaded. ' +
'If you must load one, do so before loading zone.js.)');
}
};
Object.defineProperty(Zone, "root", {
get: function () {
var zone = Zone.current;
while (zone.parent) {
zone = zone.parent;
}
return zone;
},
enumerable: true,
configurable: true
});
Object.defineProperty(Zone, "current", {
get: function () {
return _currentZoneFrame.zone;
},
enumerable: true,
configurable: true
});
Object.defineProperty(Zone, "currentTask", {
get: function () {
return _currentTask;
},
enumerable: true,
configurable: true
});
Zone.__load_patch = function (name, fn) {
if (patches.hasOwnProperty(name)) {
if (checkDuplicate) {
throw Error('Already loaded patch: ' + name);
}
}
else if (!global['__Zone_disable_' + name]) {
var perfName = 'Zone:' + name;
mark(perfName);
patches[name] = fn(global, Zone, _api);
performanceMeasure(perfName, perfName);
}
};
Object.defineProperty(Zone.prototype, "parent", {
get: function () {
return this._parent;
},
enumerable: true,
configurable: true
});
Object.defineProperty(Zone.prototype, "name", {
get: function () {
return this._name;
},
enumerable: true,
configurable: true
});
Zone.prototype.get = function (key) {
var zone = this.getZoneWith(key);
if (zone)
return zone._properties[key];
};
Zone.prototype.getZoneWith = function (key) {
var current = this;
while (current) {
if (current._properties.hasOwnProperty(key)) {
return current;
}
current = current._parent;
}
return null;
};
Zone.prototype.fork = function (zoneSpec) {
if (!zoneSpec)
throw new Error('ZoneSpec required!');
return this._zoneDelegate.fork(this, zoneSpec);
};
Zone.prototype.wrap = function (callback, source) {
if (typeof callback !== 'function') {
throw new Error('Expecting function got: ' + callback);
}
var _callback = this._zoneDelegate.intercept(this, callback, source);
var zone = this;
return function () {
return zone.runGuarded(_callback, this, arguments, source);
};
};
Zone.prototype.run = function (callback, applyThis, applyArgs, source) {
_currentZoneFrame = { parent: _currentZoneFrame, zone: this };
try {
return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
}
finally {
_currentZoneFrame = _currentZoneFrame.parent;
}
};
Zone.prototype.runGuarded = function (callback, applyThis, applyArgs, source) {
if (applyThis === void 0) { applyThis = null; }
_currentZoneFrame = { parent: _currentZoneFrame, zone: this };
try {
try {
return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
}
catch (error) {
if (this._zoneDelegate.handleError(this, error)) {
throw error;
}
}
}
finally {
_currentZoneFrame = _currentZoneFrame.parent;
}
};
Zone.prototype.runTask = function (task, applyThis, applyArgs) {
if (task.zone != this) {
throw new Error('A task can only be run in the zone of creation! (Creation: ' +
(task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');
}
// https://github.com/angular/zone.js/issues/778, sometimes eventTask
// will run in notScheduled(canceled) state, we should not try to
// run such kind of task but just return
if (task.state === notScheduled && (task.type === eventTask || task.type === macroTask)) {
return;
}
var reEntryGuard = task.state != running;
reEntryGuard && task._transitionTo(running, scheduled);
task.runCount++;
var previousTask = _currentTask;
_currentTask = task;
_currentZoneFrame = { parent: _currentZoneFrame, zone: this };
try {
if (task.type == macroTask && task.data && !task.data.isPeriodic) {
task.cancelFn = undefined;
}
try {
return this._zoneDelegate.invokeTask(this, task, applyThis, applyArgs);
}
catch (error) {
if (this._zoneDelegate.handleError(this, error)) {
throw error;
}
}
}
finally {
// if the task's state is notScheduled or unknown, then it has already been cancelled
// we should not reset the state to scheduled
if (task.state !== notScheduled && task.state !== unknown) {
if (task.type == eventTask || (task.data && task.data.isPeriodic)) {
reEntryGuard && task._transitionTo(scheduled, running);
}
else {
task.runCount = 0;
this._updateTaskCount(task, -1);
reEntryGuard &&
task._transitionTo(notScheduled, running, notScheduled);
}
}
_currentZoneFrame = _currentZoneFrame.parent;
_currentTask = previousTask;
}
};
Zone.prototype.scheduleTask = function (task) {
if (task.zone && task.zone !== this) {
// check if the task was rescheduled, the newZone
// should not be the children of the original zone
var newZone = this;
while (newZone) {
if (newZone === task.zone) {
throw Error("can not reschedule task to " + this.name + " which is descendants of the original zone " + task.zone.name);
}
newZone = newZone.parent;
}
}
task._transitionTo(scheduling, notScheduled);
var zoneDelegates = [];
task._zoneDelegates = zoneDelegates;
task._zone = this;
try {
task = this._zoneDelegate.scheduleTask(this, task);
}
catch (err) {
// should set task's state to unknown when scheduleTask throw error
// because the err may from reschedule, so the fromState maybe notScheduled
task._transitionTo(unknown, scheduling, notScheduled);
// TODO: @JiaLiPassion, should we check the result from handleError?
this._zoneDelegate.handleError(this, err);
throw err;
}
if (task._zoneDelegates === zoneDelegates) {
// we have to check because internally the delegate can reschedule the task.
this._updateTaskCount(task, 1);
}
if (task.state == scheduling) {
task._transitionTo(scheduled, scheduling);
}
return task;
};
Zone.prototype.scheduleMicroTask = function (source, callback, data, customSchedule) {
return this.scheduleTask(new ZoneTask(microTask, source, callback, data, customSchedule, undefined));
};
Zone.prototype.scheduleMacroTask = function (source, callback, data, customSchedule, customCancel) {
return this.scheduleTask(new ZoneTask(macroTask, source, callback, data, customSchedule, customCancel));
};
Zone.prototype.scheduleEventTask = function (source, callback, data, customSchedule, customCancel) {
return this.scheduleTask(new ZoneTask(eventTask, source, callback, data, customSchedule, customCancel));
};
Zone.prototype.cancelTask = function (task) {
if (task.zone != this)
throw new Error('A task can only be cancelled in the zone of creation! (Creation: ' +
(task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');
task._transitionTo(canceling, scheduled, running);
try {
this._zoneDelegate.cancelTask(this, task);
}
catch (err) {
// if error occurs when cancelTask, transit the state to unknown
task._transitionTo(unknown, canceling);
this._zoneDelegate.handleError(this, err);
throw err;
}
this._updateTaskCount(task, -1);
task._transitionTo(notScheduled, canceling);
task.runCount = 0;
return task;
};
Zone.prototype._updateTaskCount = function (task, count) {
var zoneDelegates = task._zoneDelegates;
if (count == -1) {
task._zoneDelegates = null;
}
for (var i = 0; i < zoneDelegates.length; i++) {
zoneDelegates[i]._updateTaskCount(task.type, count);
}
};
Zone.__symbol__ = __symbol__;
return Zone;
}());
var DELEGATE_ZS = {
name: '',
onHasTask: function (delegate, _, target, hasTaskState) { return delegate.hasTask(target, hasTaskState); },
onScheduleTask: function (delegate, _, target, task) {
return delegate.scheduleTask(target, task);
},
onInvokeTask: function (delegate, _, target, task, applyThis, applyArgs) {
return delegate.invokeTask(target, task, applyThis, applyArgs);
},
onCancelTask: function (delegate, _, target, task) { return delegate.cancelTask(target, task); }
};
var ZoneDelegate = /** @class */ (function () {
function ZoneDelegate(zone, parentDelegate, zoneSpec) {
this._taskCounts = { 'microTask': 0, 'macroTask': 0, 'eventTask': 0 };
this.zone = zone;
this._parentDelegate = parentDelegate;
this._forkZS = zoneSpec && (zoneSpec && zoneSpec.onFork ? zoneSpec : parentDelegate._forkZS);
this._forkDlgt = zoneSpec && (zoneSpec.onFork ? parentDelegate : parentDelegate._forkDlgt);
this._forkCurrZone = zoneSpec && (zoneSpec.onFork ? this.zone : parentDelegate.zone);
this._interceptZS =
zoneSpec && (zoneSpec.onIntercept ? zoneSpec : parentDelegate._interceptZS);
this._interceptDlgt =
zoneSpec && (zoneSpec.onIntercept ? parentDelegate : parentDelegate._interceptDlgt);
this._interceptCurrZone =
zoneSpec && (zoneSpec.onIntercept ? this.zone : parentDelegate.zone);
this._invokeZS = zoneSpec && (zoneSpec.onInvoke ? zoneSpec : parentDelegate._invokeZS);
this._invokeDlgt =
zoneSpec && (zoneSpec.onInvoke ? parentDelegate : parentDelegate._invokeDlgt);
this._invokeCurrZone = zoneSpec && (zoneSpec.onInvoke ? this.zone : parentDelegate.zone);
this._handleErrorZS =
zoneSpec && (zoneSpec.onHandleError ? zoneSpec : parentDelegate._handleErrorZS);
this._handleErrorDlgt =
zoneSpec && (zoneSpec.onHandleError ? parentDelegate : parentDelegate._handleErrorDlgt);
this._handleErrorCurrZone =
zoneSpec && (zoneSpec.onHandleError ? this.zone : parentDelegate.zone);
this._scheduleTaskZS =
zoneSpec && (zoneSpec.onScheduleTask ? zoneSpec : parentDelegate._scheduleTaskZS);
this._scheduleTaskDlgt = zoneSpec &&
(zoneSpec.onScheduleTask ? parentDelegate : parentDelegate._scheduleTaskDlgt);
this._scheduleTaskCurrZone =
zoneSpec && (zoneSpec.onScheduleTask ? this.zone : parentDelegate.zone);
this._invokeTaskZS =
zoneSpec && (zoneSpec.onInvokeTask ? zoneSpec : parentDelegate._invokeTaskZS);
this._invokeTaskDlgt =
zoneSpec && (zoneSpec.onInvokeTask ? parentDelegate : parentDelegate._invokeTaskDlgt);
this._invokeTaskCurrZone =
zoneSpec && (zoneSpec.onInvokeTask ? this.zone : parentDelegate.zone);
this._cancelTaskZS =
zoneSpec && (zoneSpec.onCancelTask ? zoneSpec : parentDelegate._cancelTaskZS);
this._cancelTaskDlgt =
zoneSpec && (zoneSpec.onCancelTask ? parentDelegate : parentDelegate._cancelTaskDlgt);
this._cancelTaskCurrZone =
zoneSpec && (zoneSpec.onCancelTask ? this.zone : parentDelegate.zone);
this._hasTaskZS = null;
this._hasTaskDlgt = null;
this._hasTaskDlgtOwner = null;
this._hasTaskCurrZone = null;
var zoneSpecHasTask = zoneSpec && zoneSpec.onHasTask;
var parentHasTask = parentDelegate && parentDelegate._hasTaskZS;
if (zoneSpecHasTask || parentHasTask) {
// If we need to report hasTask, than this ZS needs to do ref counting on tasks. In such
// a case all task related interceptors must go through this ZD. We can't short circuit it.
this._hasTaskZS = zoneSpecHasTask ? zoneSpec : DELEGATE_ZS;
this._hasTaskDlgt = parentDelegate;
this._hasTaskDlgtOwner = this;
this._hasTaskCurrZone = zone;
if (!zoneSpec.onScheduleTask) {
this._scheduleTaskZS = DELEGATE_ZS;
this._scheduleTaskDlgt = parentDelegate;
this._scheduleTaskCurrZone = this.zone;
}
if (!zoneSpec.onInvokeTask) {
this._invokeTaskZS = DELEGATE_ZS;
this._invokeTaskDlgt = parentDelegate;
this._invokeTaskCurrZone = this.zone;
}
if (!zoneSpec.onCancelTask) {
this._cancelTaskZS = DELEGATE_ZS;
this._cancelTaskDlgt = parentDelegate;
this._cancelTaskCurrZone = this.zone;
}
}
}
ZoneDelegate.prototype.fork = function (targetZone, zoneSpec) {
return this._forkZS ? this._forkZS.onFork(this._forkDlgt, this.zone, targetZone, zoneSpec) :
new Zone(targetZone, zoneSpec);
};
ZoneDelegate.prototype.intercept = function (targetZone, callback, source) {
return this._interceptZS ?
this._interceptZS.onIntercept(this._interceptDlgt, this._interceptCurrZone, targetZone, callback, source) :
callback;
};
ZoneDelegate.prototype.invoke = function (targetZone, callback, applyThis, applyArgs, source) {
return this._invokeZS ? this._invokeZS.onInvoke(this._invokeDlgt, this._invokeCurrZone, targetZone, callback, applyThis, applyArgs, source) :
callback.apply(applyThis, applyArgs);
};
ZoneDelegate.prototype.handleError = function (targetZone, error) {
return this._handleErrorZS ?
this._handleErrorZS.onHandleError(this._handleErrorDlgt, this._handleErrorCurrZone, targetZone, error) :
true;
};
ZoneDelegate.prototype.scheduleTask = function (targetZone, task) {
var returnTask = task;
if (this._scheduleTaskZS) {
if (this._hasTaskZS) {
returnTask._zoneDelegates.push(this._hasTaskDlgtOwner);
}
returnTask = this._scheduleTaskZS.onScheduleTask(this._scheduleTaskDlgt, this._scheduleTaskCurrZone, targetZone, task);
if (!returnTask)
returnTask = task;
}
else {
if (task.scheduleFn) {
task.scheduleFn(task);
}
else if (task.type == microTask) {
scheduleMicroTask(task);
}
else {
throw new Error('Task is missing scheduleFn.');
}
}
return returnTask;
};
ZoneDelegate.prototype.invokeTask = function (targetZone, task, applyThis, applyArgs) {
return this._invokeTaskZS ? this._invokeTaskZS.onInvokeTask(this._invokeTaskDlgt, this._invokeTaskCurrZone, targetZone, task, applyThis, applyArgs) :
task.callback.apply(applyThis, applyArgs);
};
ZoneDelegate.prototype.cancelTask = function (targetZone, task) {
var value;
if (this._cancelTaskZS) {
value = this._cancelTaskZS.onCancelTask(this._cancelTaskDlgt, this._cancelTaskCurrZone, targetZone, task);
}
else {
if (!task.cancelFn) {
throw Error('Task is not cancelable');
}
value = task.cancelFn(task);
}
return value;
};
ZoneDelegate.prototype.hasTask = function (targetZone, isEmpty) {
// hasTask should not throw error so other ZoneDelegate
// can still trigger hasTask callback
try {
this._hasTaskZS &&
this._hasTaskZS.onHasTask(this._hasTaskDlgt, this._hasTaskCurrZone, targetZone, isEmpty);
}
catch (err) {
this.handleError(targetZone, err);
}
};
ZoneDelegate.prototype._updateTaskCount = function (type, count) {
var counts = this._taskCounts;
var prev = counts[type];
var next = counts[type] = prev + count;
if (next < 0) {
throw new Error('More tasks executed then were scheduled.');
}
if (prev == 0 || next == 0) {
var isEmpty = {
microTask: counts['microTask'] > 0,
macroTask: counts['macroTask'] > 0,
eventTask: counts['eventTask'] > 0,
change: type
};
this.hasTask(this.zone, isEmpty);
}
};
return ZoneDelegate;
}());
var ZoneTask = /** @class */ (function () {
function ZoneTask(type, source, callback, options, scheduleFn, cancelFn) {
this._zone = null;
this.runCount = 0;
this._zoneDelegates = null;
this._state = 'notScheduled';
this.type = type;
this.source = source;
this.data = options;
this.scheduleFn = scheduleFn;
this.cancelFn = cancelFn;
this.callback = callback;
var self = this;
// TODO: @JiaLiPassion options should have interface
if (type === eventTask && options && options.useG) {
this.invoke = ZoneTask.invokeTask;
}
else {
this.invoke = function () {
return ZoneTask.invokeTask.call(global, self, this, arguments);
};
}
}
ZoneTask.invokeTask = function (task, target, args) {
if (!task) {
task = this;
}
_numberOfNestedTaskFrames++;
try {
task.runCount++;
return task.zone.runTask(task, target, args);
}
finally {
if (_numberOfNestedTaskFrames == 1) {
drainMicroTaskQueue();
}
_numberOfNestedTaskFrames--;
}
};
Object.defineProperty(ZoneTask.prototype, "zone", {
get: function () {
return this._zone;
},
enumerable: true,
configurable: true
});
Object.defineProperty(ZoneTask.prototype, "state", {
get: function () {
return this._state;
},
enumerable: true,
configurable: true
});
ZoneTask.prototype.cancelScheduleRequest = function () {
this._transitionTo(notScheduled, scheduling);
};
ZoneTask.prototype._transitionTo = function (toState, fromState1, fromState2) {
if (this._state === fromState1 || this._state === fromState2) {
this._state = toState;
if (toState == notScheduled) {
this._zoneDelegates = null;
}
}
else {
throw new Error(this.type + " '" + this.source + "': can not transition to '" + toState + "', expecting state '" + fromState1 + "'" + (fromState2 ? ' or \'' + fromState2 + '\'' : '') + ", was '" + this._state + "'.");
}
};
ZoneTask.prototype.toString = function () {
if (this.data && typeof this.data.handleId !== 'undefined') {
return this.data.handleId.toString();
}
else {
return Object.prototype.toString.call(this);
}
};
// add toJSON method to prevent cyclic error when
// call JSON.stringify(zoneTask)
ZoneTask.prototype.toJSON = function () {
return {
type: this.type,
state: this.state,
source: this.source,
zone: this.zone.name,
runCount: this.runCount
};
};
return ZoneTask;
}());
//////////////////////////////////////////////////////
//////////////////////////////////////////////////////
/// MICROTASK QUEUE
//////////////////////////////////////////////////////
//////////////////////////////////////////////////////
var symbolSetTimeout = __symbol__('setTimeout');
var symbolPromise = __symbol__('Promise');
var symbolThen = __symbol__('then');
var _microTaskQueue = [];
var _isDrainingMicrotaskQueue = false;
var nativeMicroTaskQueuePromise;
function scheduleMicroTask(task) {
// if we are not running in any task, and there has not been anything scheduled
// we must bootstrap the initial task creation by manually scheduling the drain
if (_numberOfNestedTaskFrames === 0 && _microTaskQueue.length === 0) {
// We are not running in Task, so we need to kickstart the microtask queue.
if (!nativeMicroTaskQueuePromise) {
if (global[symbolPromise]) {
nativeMicroTaskQueuePromise = global[symbolPromise].resolve(0);
}
}
if (nativeMicroTaskQueuePromise) {
var nativeThen = nativeMicroTaskQueuePromise[symbolThen];
if (!nativeThen) {
// native Promise is not patchable, we need to use `then` directly
// issue 1078
nativeThen = nativeMicroTaskQueuePromise['then'];
}
nativeThen.call(nativeMicroTaskQueuePromise, drainMicroTaskQueue);
}
else {
global[symbolSetTimeout](drainMicroTaskQueue, 0);
}
}
task && _microTaskQueue.push(task);
}
function drainMicroTaskQueue() {
if (!_isDrainingMicrotaskQueue) {
_isDrainingMicrotaskQueue = true;
while (_microTaskQueue.length) {
var queue = _microTaskQueue;
_microTaskQueue = [];
for (var i = 0; i < queue.length; i++) {
var task = queue[i];
try {
task.zone.runTask(task, null, null);
}
catch (error) {
_api.onUnhandledError(error);
}
}
}
_api.microtaskDrainDone();
_isDrainingMicrotaskQueue = false;
}
}
//////////////////////////////////////////////////////
//////////////////////////////////////////////////////
/// BOOTSTRAP
//////////////////////////////////////////////////////
//////////////////////////////////////////////////////
var NO_ZONE = { name: 'NO ZONE' };
var notScheduled = 'notScheduled', scheduling = 'scheduling', scheduled = 'scheduled', running = 'running', canceling = 'canceling', unknown = 'unknown';
var microTask = 'microTask', macroTask = 'macroTask', eventTask = 'eventTask';
var patches = {};
var _api = {
symbol: __symbol__,
currentZoneFrame: function () { return _currentZoneFrame; },
onUnhandledError: noop,
microtaskDrainDone: noop,
scheduleMicroTask: scheduleMicroTask,
showUncaughtError: function () { return !Zone[__symbol__('ignoreConsoleErrorUncaughtError')]; },
patchEventTarget: function () { return []; },
patchOnProperties: noop,
patchMethod: function () { return noop; },
bindArguments: function () { return []; },
patchThen: function () { return noop; },
patchMacroTask: function () { return noop; },
setNativePromise: function (NativePromise) {
// sometimes NativePromise.resolve static function
// is not ready yet, (such as core-js/es6.promise)
// so we need to check here.
if (NativePromise && typeof NativePromise.resolve === 'function') {
nativeMicroTaskQueuePromise = NativePromise.resolve(0);
}
},
patchEventPrototype: function () { return noop; },
isIEOrEdge: function () { return false; },
getGlobalObjects: function () { return undefined; },
ObjectDefineProperty: function () { return noop; },
ObjectGetOwnPropertyDescriptor: function () { return undefined; },
ObjectCreate: function () { return undefined; },
ArraySlice: function () { return []; },
patchClass: function () { return noop; },
wrapWithCurrentZone: function () { return noop; },
filterProperties: function () { return []; },
attachOriginToPatched: function () { return noop; },
_redefineProperty: function () { return noop; },
patchCallbacks: function () { return noop; }
};
var _currentZoneFrame = { parent: null, zone: new Zone(null, null) };
var _currentTask = null;
var _numberOfNestedTaskFrames = 0;
function noop() { }
function __symbol__(name) {
return '__zone_symbol__' + name;
}
performanceMeasure('Zone', 'Zone');
return global['Zone'] = Zone;
})(typeof window !== 'undefined' && window || typeof self !== 'undefined' && self || global);
var __values = (undefined && undefined.__values) || function (o) {
var m = typeof Symbol === "function" && o[Symbol.iterator], i = 0;
if (m) return m.call(o);
return {
next: function () {
if (o && i >= o.length) o = void 0;
return { value: o && o[i++], done: !o };
}
};
};
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
Zone.__load_patch('ZoneAwarePromise', function (global, Zone, api) {
var ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
var ObjectDefineProperty = Object.defineProperty;
function readableObjectToString(obj) {
if (obj && obj.toString === Object.prototype.toString) {
var className = obj.constructor && obj.constructor.name;
return (className ? className : '') + ': ' + JSON.stringify(obj);
}
return obj ? obj.toString() : Object.prototype.toString.call(obj);
}
var __symbol__ = api.symbol;
var _uncaughtPromiseErrors = [];
var symbolPromise = __symbol__('Promise');
var symbolThen = __symbol__('then');
var creationTrace = '__creationTrace__';
api.onUnhandledError = function (e) {
if (api.showUncaughtError()) {
var rejection = e && e.rejection;
if (rejection) {
console.error('Unhandled Promise rejection:', rejection instanceof Error ? rejection.message : rejection, '; Zone:', e.zone.name, '; Task:', e.task && e.task.source, '; Value:', rejection, rejection instanceof Error ? rejection.stack : undefined);
}
else {
console.error(e);
}
}
};
api.microtaskDrainDone = function () {
while (_uncaughtPromiseErrors.length) {
var _loop_1 = function () {
var uncaughtPromiseError = _uncaughtPromiseErrors.shift();
try {
uncaughtPromiseError.zone.runGuarded(function () {
throw uncaughtPromiseError;
});
}
catch (error) {
handleUnhandledRejection(error);
}
};
while (_uncaughtPromiseErrors.length) {
_loop_1();
}
}
};
var UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL = __symbol__('unhandledPromiseRejectionHandler');
function handleUnhandledRejection(e) {
api.onUnhandledError(e);
try {
var handler = Zone[UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL];
if (handler && typeof handler === 'function') {
handler.call(this, e);
}
}
catch (err) {
}
}
function isThenable(value) {
return value && value.then;
}
function forwardResolution(value) {
return value;
}
function forwardRejection(rejection) {
return ZoneAwarePromise.reject(rejection);
}
var symbolState = __symbol__('state');
var symbolValue = __symbol__('value');
var symbolFinally = __symbol__('finally');
var symbolParentPromiseValue = __symbol__('parentPromiseValue');
var symbolParentPromiseState = __symbol__('parentPromiseState');
var source = 'Promise.then';
var UNRESOLVED = null;
var RESOLVED = true;
var REJECTED = false;
var REJECTED_NO_CATCH = 0;
function makeResolver(promise, state) {
return function (v) {
try {
resolvePromise(promise, state, v);
}
catch (err) {
resolvePromise(promise, false, err);
}
// Do not return value or you will break the Promise spec.
};
}
var once = function () {
var wasCalled = false;
return function wrapper(wrappedFunction) {
return function () {
if (wasCalled) {
return;
}
wasCalled = true;
wrappedFunction.apply(null, arguments);
};
};
};
var TYPE_ERROR = 'Promise resolved with itself';
var CURRENT_TASK_TRACE_SYMBOL = __symbol__('currentTaskTrace');
// Promise Resolution
function resolvePromise(promise, state, value) {
var onceWrapper = once();
if (promise === value) {
throw new TypeError(TYPE_ERROR);
}
if (promise[symbolState] === UNRESOLVED) {
// should only get value.then once based on promise spec.
var then = null;
try {
if (typeof value === 'object' || typeof value === 'function') {
then = value && value.then;
}
}
catch (err) {
onceWrapper(function () {
resolvePromise(promise, false, err);
})();
return promise;
}
// if (value instanceof ZoneAwarePromise) {
if (state !== REJECTED && value instanceof ZoneAwarePromise &&
value.hasOwnProperty(symbolState) && value.hasOwnProperty(symbolValue) &&
value[symbolState] !== UNRESOLVED) {
clearRejectedNoCatch(value);
resolvePromise(promise, value[symbolState], value[symbolValue]);
}
else if (state !== REJECTED && typeof then === 'function') {
try {
then.call(value, onceWrapper(makeResolver(promise, state)), onceWrapper(makeResolver(promise, false)));
}
catch (err) {
onceWrapper(function () {
resolvePromise(promise, false, err);
})();
}
}
else {
promise[symbolState] = state;
var queue = promise[symbolValue];
promise[symbolValue] = value;
if (promise[symbolFinally] === symbolFinally) {
// the promise is generated by Promise.prototype.finally
if (state === RESOLVED) {
// the state is resolved, should ignore the value
// and use parent promise value
promise[symbolState] = promise[symbolParentPromiseState];
promise[symbolValue] = promise[symbolParentPromiseValue];
}
}
// record task information in value when error occurs, so we can
// do some additional work such as render longStackTrace
if (state === REJECTED && value instanceof Error) {
// check if longStackTraceZone is here
var trace = Zone.currentTask && Zone.currentTask.data &&
Zone.currentTask.data[creationTrace];
if (trace) {
// only keep the long stack trace into error when in longStackTraceZone
ObjectDefineProperty(value, CURRENT_TASK_TRACE_SYMBOL, { configurable: true, enumerable: false, writable: true, value: trace });
}
}
for (var i = 0; i < queue.length;) {
scheduleResolveOrReject(promise, queue[i++], queue[i++], queue[i++], queue[i++]);
}
if (queue.length == 0 && state == REJECTED) {
promise[symbolState] = REJECTED_NO_CATCH;
try {
// try to print more readable error log
throw new Error('Uncaught (in promise): ' + readableObjectToString(value) +
(value && value.stack ? '\n' + value.stack : ''));
}
catch (err) {
var error_1 = err;
error_1.rejection = value;
error_1.promise = promise;
error_1.zone = Zone.current;
error_1.task = Zone.currentTask;
_uncaughtPromiseErrors.push(error_1);
api.scheduleMicroTask(); // to make sure that it is running
}
}
}
}
// Resolving an already resolved promise is a noop.
return promise;
}
var REJECTION_HANDLED_HANDLER = __symbol__('rejectionHandledHandler');
function clearRejectedNoCatch(promise) {
if (promise[symbolState] === REJECTED_NO_CATCH) {
// if the promise is rejected no catch status
// and queue.length > 0, means there is a error handler
// here to handle the rejected promise, we should trigger
// windows.rejectionhandled eventHandler or nodejs rejectionHandled
// eventHandler
try {
var handler = Zone[REJECTION_HANDLED_HANDLER];
if (handler && typeof handler === 'function') {
handler.call(this, { rejection: promise[symbolValue], promise: promise });
}
}
catch (err) {
}
promise[symbolState] = REJECTED;
for (var i = 0; i < _uncaughtPromiseErrors.length; i++) {
if (promise === _uncaughtPromiseErrors[i].promise) {
_uncaughtPromiseErrors.splice(i, 1);
}
}
}
}
function scheduleResolveOrReject(promise, zone, chainPromise, onFulfilled, onRejected) {
clearRejectedNoCatch(promise);
var promiseState = promise[symbolState];
var delegate = promiseState ?
(typeof onFulfilled === 'function') ? onFulfilled : forwardResolution :
(typeof onRejected === 'function') ? onRejected : forwardRejection;
zone.scheduleMicroTask(source, function () {
try {
var parentPromiseValue = promise[symbolValue];
var isFinallyPromise = chainPromise && symbolFinally === chainPromise[symbolFinally];
if (isFinallyPromise) {
// if the promise is generated from finally call, keep parent promise's state and value
chainPromise[symbolParentPromiseValue] = parentPromiseValue;
chainPromise[symbolParentPromiseState] = promiseState;
}
// should not pass value to finally callback
var value = zone.run(delegate, undefined, isFinallyPromise && delegate !== forwardRejection && delegate !== forwardResolution ?
[] :
[parentPromiseValue]);
resolvePromise(chainPromise, true, value);
}
catch (error) {
// if error occurs, should always return this error
resolvePromise(chainPromise, false, error);
}
}, chainPromise);
}
var ZONE_AWARE_PROMISE_TO_STRING = 'function ZoneAwarePromise() { [native code] }';
var ZoneAwarePromise = /** @class */ (function () {
function ZoneAwarePromise(executor) {
var promise = this;
if (!(promise instanceof ZoneAwarePromise)) {
throw new Error('Must be an instanceof Promise.');
}
promise[symbolState] = UNRESOLVED;
promise[symbolValue] = []; // queue;
try {
executor && executor(makeResolver(promise, RESOLVED), makeResolver(promise, REJECTED));
}
catch (error) {
resolvePromise(promise, false, error);
}
}
ZoneAwarePromise.toString = function () {
return ZONE_AWARE_PROMISE_TO_STRING;
};
ZoneAwarePromise.resolve = function (value) {
return resolvePromise(new this(null), RESOLVED, value);
};
ZoneAwarePromise.reject = function (error) {
return resolvePromise(new this(null), REJECTED, error);
};
ZoneAwarePromise.race = function (values) {
var e_1, _a;
var resolve;
var reject;
var promise = new this(function (res, rej) {
resolve = res;
reject = rej;
});
function onResolve(value) {
resolve(value);
}
function onReject(error) {
reject(error);
}
try {
for (var values_1 = __values(values), values_1_1 = values_1.next(); !values_1_1.done; values_1_1 = values_1.next()) {
var value = values_1_1.value;
if (!isThenable(value)) {
value = this.resolve(value);
}
value.then(onResolve, onReject);
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (values_1_1 && !values_1_1.done && (_a = values_1.return)) _a.call(values_1);
}
finally { if (e_1) throw e_1.error; }
}
return promise;
};
ZoneAwarePromise.all = function (values) {
var e_2, _a;
var resolve;
var reject;
var promise = new this(function (res, rej) {
resolve = res;
reject = rej;
});
// Start at 2 to prevent prematurely resolving if .then is called immediately.
var unresolvedCount = 2;
var valueIndex = 0;
var resolvedValues = [];
var _loop_2 = function (value) {
if (!isThenable(value)) {
value = this_1.resolve(value);
}
var curValueIndex = valueIndex;
value.then(function (value) {
resolvedValues[curValueIndex] = value;
unresolvedCount--;
if (unresolvedCount === 0) {
resolve(resolvedValues);
}