'use strict';
/**
 * @license Angular v15.1.0-next.0
 * (c) 2010-2022 Google LLC. https://angular.io/
 * License: MIT
 */
/**
 * @license
 * Copyright Google LLC 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) {
    const 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');
    // Initialize before it's accessed below.
    // __Zone_symbol_prefix global can be used to override the default zone
    // symbol prefix with a custom one if needed.
    const symbolPrefix = global['__Zone_symbol_prefix'] || '__zone_symbol__';
    function __symbol__(name) {
        return symbolPrefix + name;
    }
    const checkDuplicate = global[__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'];
        }
    }
    class Zone {
        constructor(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);
        }
        static assertZonePatched() {
            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.)');
            }
        }
        static get root() {
            let zone = Zone.current;
            while (zone.parent) {
                zone = zone.parent;
            }
            return zone;
        }
        static get current() {
            return _currentZoneFrame.zone;
        }
        static get currentTask() {
            return _currentTask;
        }
        // tslint:disable-next-line:require-internal-with-underscore
        static __load_patch(name, fn, ignoreDuplicate = false) {
            if (patches.hasOwnProperty(name)) {
                // `checkDuplicate` option is defined from global variable
                // so it works for all modules.
                // `ignoreDuplicate` can work for the specified module
                if (!ignoreDuplicate && checkDuplicate) {
                    throw Error('Already loaded patch: ' + name);
                }
            }
            else if (!global['__Zone_disable_' + name]) {
                const perfName = 'Zone:' + name;
                mark(perfName);
                patches[name] = fn(global, Zone, _api);
                performanceMeasure(perfName, perfName);
            }
        }
        get parent() {
            return this._parent;
        }
        get name() {
            return this._name;
        }
        get(key) {
            const zone = this.getZoneWith(key);
            if (zone)
                return zone._properties[key];
        }
        getZoneWith(key) {
            let current = this;
            while (current) {
                if (current._properties.hasOwnProperty(key)) {
                    return current;
                }
                current = current._parent;
            }
            return null;
        }
        fork(zoneSpec) {
            if (!zoneSpec)
                throw new Error('ZoneSpec required!');
            return this._zoneDelegate.fork(this, zoneSpec);
        }
        wrap(callback, source) {
            if (typeof callback !== 'function') {
                throw new Error('Expecting function got: ' + callback);
            }
            const _callback = this._zoneDelegate.intercept(this, callback, source);
            const zone = this;
            return function () {
                return zone.runGuarded(_callback, this, arguments, source);
            };
        }
        run(callback, applyThis, applyArgs, source) {
            _currentZoneFrame = { parent: _currentZoneFrame, zone: this };
            try {
                return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
            }
            finally {
                _currentZoneFrame = _currentZoneFrame.parent;
            }
        }
        runGuarded(callback, applyThis = null, applyArgs, source) {
            _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;
            }
        }
        runTask(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;
            }
            const reEntryGuard = task.state != running;
            reEntryGuard && task._transitionTo(running, scheduled);
            task.runCount++;
            const 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;
            }
        }
        scheduleTask(task) {
            if (task.zone && task.zone !== this) {
                // check if the task was rescheduled, the newZone
                // should not be the children of the original zone
                let 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);
            const 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;
        }
        scheduleMicroTask(source, callback, data, customSchedule) {
            return this.scheduleTask(new ZoneTask(microTask, source, callback, data, customSchedule, undefined));
        }
        scheduleMacroTask(source, callback, data, customSchedule, customCancel) {
            return this.scheduleTask(new ZoneTask(macroTask, source, callback, data, customSchedule, customCancel));
        }
        scheduleEventTask(source, callback, data, customSchedule, customCancel) {
            return this.scheduleTask(new ZoneTask(eventTask, source, callback, data, customSchedule, customCancel));
        }
        cancelTask(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 + ')');
            if (task.state !== scheduled && task.state !== running) {
                return;
            }
            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;
        }
        _updateTaskCount(task, count) {
            const zoneDelegates = task._zoneDelegates;
            if (count == -1) {
                task._zoneDelegates = null;
            }
            for (let i = 0; i < zoneDelegates.length; i++) {
                zoneDelegates[i]._updateTaskCount(task.type, count);
            }
        }
    }
    // tslint:disable-next-line:require-internal-with-underscore
    Zone.__symbol__ = __symbol__;
    const DELEGATE_ZS = {
        name: '',
        onHasTask: (delegate, _, target, hasTaskState) => delegate.hasTask(target, hasTaskState),
        onScheduleTask: (delegate, _, target, task) => delegate.scheduleTask(target, task),
        onInvokeTask: (delegate, _, target, task, applyThis, applyArgs) => delegate.invokeTask(target, task, applyThis, applyArgs),
        onCancelTask: (delegate, _, target, task) => delegate.cancelTask(target, task)
    };
    class _ZoneDelegate {
        constructor(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._forkCurrZone);
            this._interceptZS =
                zoneSpec && (zoneSpec.onIntercept ? zoneSpec : parentDelegate._interceptZS);
            this._interceptDlgt =
                zoneSpec && (zoneSpec.onIntercept ? parentDelegate : parentDelegate._interceptDlgt);
            this._interceptCurrZone =
                zoneSpec && (zoneSpec.onIntercept ? this.zone : parentDelegate._interceptCurrZone);
            this._invokeZS = zoneSpec && (zoneSpec.onInvoke ? zoneSpec : parentDelegate._invokeZS);
            this._invokeDlgt =
                zoneSpec && (zoneSpec.onInvoke ? parentDelegate : parentDelegate._invokeDlgt);
            this._invokeCurrZone =
                zoneSpec && (zoneSpec.onInvoke ? this.zone : parentDelegate._invokeCurrZone);
            this._handleErrorZS =
                zoneSpec && (zoneSpec.onHandleError ? zoneSpec : parentDelegate._handleErrorZS);
            this._handleErrorDlgt =
                zoneSpec && (zoneSpec.onHandleError ? parentDelegate : parentDelegate._handleErrorDlgt);
            this._handleErrorCurrZone =
                zoneSpec && (zoneSpec.onHandleError ? this.zone : parentDelegate._handleErrorCurrZone);
            this._scheduleTaskZS =
                zoneSpec && (zoneSpec.onScheduleTask ? zoneSpec : parentDelegate._scheduleTaskZS);
            this._scheduleTaskDlgt = zoneSpec &&
                (zoneSpec.onScheduleTask ? parentDelegate : parentDelegate._scheduleTaskDlgt);
            this._scheduleTaskCurrZone =
                zoneSpec && (zoneSpec.onScheduleTask ? this.zone : parentDelegate._scheduleTaskCurrZone);
            this._invokeTaskZS =
                zoneSpec && (zoneSpec.onInvokeTask ? zoneSpec : parentDelegate._invokeTaskZS);
            this._invokeTaskDlgt =
                zoneSpec && (zoneSpec.onInvokeTask ? parentDelegate : parentDelegate._invokeTaskDlgt);
            this._invokeTaskCurrZone =
                zoneSpec && (zoneSpec.onInvokeTask ? this.zone : parentDelegate._invokeTaskCurrZone);
            this._cancelTaskZS =
                zoneSpec && (zoneSpec.onCancelTask ? zoneSpec : parentDelegate._cancelTaskZS);
            this._cancelTaskDlgt =
                zoneSpec && (zoneSpec.onCancelTask ? parentDelegate : parentDelegate._cancelTaskDlgt);
            this._cancelTaskCurrZone =
                zoneSpec && (zoneSpec.onCancelTask ? this.zone : parentDelegate._cancelTaskCurrZone);
            this._hasTaskZS = null;
            this._hasTaskDlgt = null;
            this._hasTaskDlgtOwner = null;
            this._hasTaskCurrZone = null;
            const zoneSpecHasTask = zoneSpec && zoneSpec.onHasTask;
            const 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;
                }
            }
        }
        fork(targetZone, zoneSpec) {
            return this._forkZS ? this._forkZS.onFork(this._forkDlgt, this.zone, targetZone, zoneSpec) :
                new Zone(targetZone, zoneSpec);
        }
        intercept(targetZone, callback, source) {
            return this._interceptZS ?
                this._interceptZS.onIntercept(this._interceptDlgt, this._interceptCurrZone, targetZone, callback, source) :
                callback;
        }
        invoke(targetZone, callback, applyThis, applyArgs, source) {
            return this._invokeZS ? this._invokeZS.onInvoke(this._invokeDlgt, this._invokeCurrZone, targetZone, callback, applyThis, applyArgs, source) :
                callback.apply(applyThis, applyArgs);
        }
        handleError(targetZone, error) {
            return this._handleErrorZS ?
                this._handleErrorZS.onHandleError(this._handleErrorDlgt, this._handleErrorCurrZone, targetZone, error) :
                true;
        }
        scheduleTask(targetZone, task) {
            let returnTask = task;
            if (this._scheduleTaskZS) {
                if (this._hasTaskZS) {
                    returnTask._zoneDelegates.push(this._hasTaskDlgtOwner);
                }
                // clang-format off
                returnTask = this._scheduleTaskZS.onScheduleTask(this._scheduleTaskDlgt, this._scheduleTaskCurrZone, targetZone, task);
                // clang-format on
                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;
        }
        invokeTask(targetZone, task, applyThis, applyArgs) {
            return this._invokeTaskZS ? this._invokeTaskZS.onInvokeTask(this._invokeTaskDlgt, this._invokeTaskCurrZone, targetZone, task, applyThis, applyArgs) :
                task.callback.apply(applyThis, applyArgs);
        }
        cancelTask(targetZone, task) {
            let 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;
        }
        hasTask(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);
            }
        }
        // tslint:disable-next-line:require-internal-with-underscore
        _updateTaskCount(type, count) {
            const counts = this._taskCounts;
            const prev = counts[type];
            const next = counts[type] = prev + count;
            if (next < 0) {
                throw new Error('More tasks executed then were scheduled.');
            }
            if (prev == 0 || next == 0) {
                const isEmpty = {
                    microTask: counts['microTask'] > 0,
                    macroTask: counts['macroTask'] > 0,
                    eventTask: counts['eventTask'] > 0,
                    change: type
                };
                this.hasTask(this.zone, isEmpty);
            }
        }
    }
    class ZoneTask {
        constructor(type, source, callback, options, scheduleFn, cancelFn) {
            // tslint:disable-next-line:require-internal-with-underscore
            this._zone = null;
            this.runCount = 0;
            // tslint:disable-next-line:require-internal-with-underscore
            this._zoneDelegates = null;
            // tslint:disable-next-line:require-internal-with-underscore
            this._state = 'notScheduled';
            this.type = type;
            this.source = source;
            this.data = options;
            this.scheduleFn = scheduleFn;
            this.cancelFn = cancelFn;
            if (!callback) {
                throw new Error('callback is not defined');
            }
            this.callback = callback;
            const 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);
                };
            }
        }
        static invokeTask(task, target, args) {
            if (!task) {
                task = this;
            }
            _numberOfNestedTaskFrames++;
            try {
                task.runCount++;
                return task.zone.runTask(task, target, args);
            }
            finally {
                if (_numberOfNestedTaskFrames == 1) {
                    drainMicroTaskQueue();
                }
                _numberOfNestedTaskFrames--;
            }
        }
        get zone() {
            return this._zone;
        }
        get state() {
            return this._state;
        }
        cancelScheduleRequest() {
            this._transitionTo(notScheduled, scheduling);
        }
        // tslint:disable-next-line:require-internal-with-underscore
        _transitionTo(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}'.`);
            }
        }
        toString() {
            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)
        toJSON() {
            return {
                type: this.type,
                state: this.state,
                source: this.source,
                zone: this.zone.name,
                runCount: this.runCount
            };
        }
    }
    //////////////////////////////////////////////////////
    //////////////////////////////////////////////////////
    ///  MICROTASK QUEUE
    //////////////////////////////////////////////////////
    //////////////////////////////////////////////////////
    const symbolSetTimeout = __symbol__('setTimeout');
    const symbolPromise = __symbol__('Promise');
    const symbolThen = __symbol__('then');
    let _microTaskQueue = [];
    let _isDrainingMicrotaskQueue = false;
    let nativeMicroTaskQueuePromise;
    function nativeScheduleMicroTask(func) {
        if (!nativeMicroTaskQueuePromise) {
            if (global[symbolPromise]) {
                nativeMicroTaskQueuePromise = global[symbolPromise].resolve(0);
            }
        }
        if (nativeMicroTaskQueuePromise) {
            let nativeThen = nativeMicroTaskQueuePromise[symbolThen];
            if (!nativeThen) {
                // native Promise is not patchable, we need to use `then` directly
                // issue 1078
                nativeThen = nativeMicroTaskQueuePromise['then'];
            }
            nativeThen.call(nativeMicroTaskQueuePromise, func);
        }
        else {
            global[symbolSetTimeout](func, 0);
        }
    }
    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.
            nativeScheduleMicroTask(drainMicroTaskQueue);
        }
        task && _microTaskQueue.push(task);
    }
    function drainMicroTaskQueue() {
        if (!_isDrainingMicrotaskQueue) {
            _isDrainingMicrotaskQueue = true;
            while (_microTaskQueue.length) {
                const queue = _microTaskQueue;
                _microTaskQueue = [];
                for (let i = 0; i < queue.length; i++) {
                    const task = queue[i];
                    try {
                        task.zone.runTask(task, null, null);
                    }
                    catch (error) {
                        _api.onUnhandledError(error);
                    }
                }
            }
            _api.microtaskDrainDone();
            _isDrainingMicrotaskQueue = false;
        }
    }
    //////////////////////////////////////////////////////
    //////////////////////////////////////////////////////
    ///  BOOTSTRAP
    //////////////////////////////////////////////////////
    //////////////////////////////////////////////////////
    const NO_ZONE = { name: 'NO ZONE' };
    const notScheduled = 'notScheduled', scheduling = 'scheduling', scheduled = 'scheduled', running = 'running', canceling = 'canceling', unknown = 'unknown';
    const microTask = 'microTask', macroTask = 'macroTask', eventTask = 'eventTask';
    const patches = {};
    const _api = {
        symbol: __symbol__,
        currentZoneFrame: () => _currentZoneFrame,
        onUnhandledError: noop,
        microtaskDrainDone: noop,
        scheduleMicroTask: scheduleMicroTask,
        showUncaughtError: () => !Zone[__symbol__('ignoreConsoleErrorUncaughtError')],
        patchEventTarget: () => [],
        patchOnProperties: noop,
        patchMethod: () => noop,
        bindArguments: () => [],
        patchThen: () => noop,
        patchMacroTask: () => noop,
        patchEventPrototype: () => noop,
        isIEOrEdge: () => false,
        getGlobalObjects: () => undefined,
        ObjectDefineProperty: () => noop,
        ObjectGetOwnPropertyDescriptor: () => undefined,
        ObjectCreate: () => undefined,
        ArraySlice: () => [],
        patchClass: () => noop,
        wrapWithCurrentZone: () => noop,
        filterProperties: () => [],
        attachOriginToPatched: () => noop,
        _redefineProperty: () => noop,
        patchCallbacks: () => noop,
        nativeScheduleMicroTask: nativeScheduleMicroTask
    };
    let _currentZoneFrame = { parent: null, zone: new Zone(null, null) };
    let _currentTask = null;
    let _numberOfNestedTaskFrames = 0;
    function noop() { }
    performanceMeasure('Zone', 'Zone');
    return global['Zone'] = Zone;
}))(typeof window !== 'undefined' && window || typeof self !== 'undefined' && self || global);

/**
 * @license
 * Copyright Google LLC 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
 */
/**
 * Suppress closure compiler errors about unknown 'Zone' variable
 * @fileoverview
 * @suppress {undefinedVars,globalThis,missingRequire}
 */
/// <reference types="node"/>
// issue #989, to reduce bundle size, use short name
/** Object.getOwnPropertyDescriptor */
const ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
/** Object.defineProperty */
const ObjectDefineProperty = Object.defineProperty;
/** Object.getPrototypeOf */
const ObjectGetPrototypeOf = Object.getPrototypeOf;
/** Array.prototype.slice */
const ArraySlice = Array.prototype.slice;
/** addEventListener string const */
const ADD_EVENT_LISTENER_STR = 'addEventListener';
/** removeEventListener string const */
const REMOVE_EVENT_LISTENER_STR = 'removeEventListener';
/** zoneSymbol addEventListener */
Zone.__symbol__(ADD_EVENT_LISTENER_STR);
/** zoneSymbol removeEventListener */
Zone.__symbol__(REMOVE_EVENT_LISTENER_STR);
/** true string const */
const TRUE_STR = 'true';
/** false string const */
const FALSE_STR = 'false';
/** Zone symbol prefix string const. */
const ZONE_SYMBOL_PREFIX = Zone.__symbol__('');
function wrapWithCurrentZone(callback, source) {
    return Zone.current.wrap(callback, source);
}
function scheduleMacroTaskWithCurrentZone(source, callback, data, customSchedule, customCancel) {
    return Zone.current.scheduleMacroTask(source, callback, data, customSchedule, customCancel);
}
const zoneSymbol = Zone.__symbol__;
const isWindowExists = typeof window !== 'undefined';
const internalWindow = isWindowExists ? window : undefined;
const _global = isWindowExists && internalWindow || typeof self === 'object' && self || global;
const REMOVE_ATTRIBUTE = 'removeAttribute';
function bindArguments(args, source) {
    for (let i = args.length - 1; i >= 0; i--) {
        if (typeof args[i] === 'function') {
            args[i] = wrapWithCurrentZone(args[i], source + '_' + i);
        }
    }
    return args;
}
function isPropertyWritable(propertyDesc) {
    if (!propertyDesc) {
        return true;
    }
    if (propertyDesc.writable === false) {
        return false;
    }
    return !(typeof propertyDesc.get === 'function' && typeof propertyDesc.set === 'undefined');
}
const isWebWorker = (typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope);
// Make sure to access `process` through `_global` so that WebPack does not accidentally browserify
// this code.
const isNode = (!('nw' in _global) && typeof _global.process !== 'undefined' &&
    {}.toString.call(_global.process) === '[object process]');
const isBrowser = !isNode && !isWebWorker && !!(isWindowExists && internalWindow['HTMLElement']);
// we are in electron of nw, so we are both browser and nodejs
// Make sure to access `process` through `_global` so that WebPack does not accidentally browserify
// this code.
const isMix = typeof _global.process !== 'undefined' &&
    {}.toString.call(_global.process) === '[object process]' && !isWebWorker &&
    !!(isWindowExists && internalWindow['HTMLElement']);
const zoneSymbolEventNames$1 = {};
const wrapFn = function (event) {
    // https://github.com/angular/zone.js/issues/911, in IE, sometimes
    // event will be undefined, so we need to use window.event
    event = event || _global.event;
    if (!event) {
        return;
    }
    let eventNameSymbol = zoneSymbolEventNames$1[event.type];
    if (!eventNameSymbol) {
        eventNameSymbol = zoneSymbolEventNames$1[event.type] = zoneSymbol('ON_PROPERTY' + event.type);
    }
    const target = this || event.target || _global;
    const listener = target[eventNameSymbol];
    let result;
    if (isBrowser && target === internalWindow && event.type === 'error') {
        // window.onerror have different signature
        // https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/onerror#window.onerror
        // and onerror callback will prevent default when callback return true
        const errorEvent = event;
        result = listener &&
            listener.call(this, errorEvent.message, errorEvent.filename, errorEvent.lineno, errorEvent.colno, errorEvent.error);
        if (result === true) {
            event.preventDefault();
        }
    }
    else {
        result = listener && listener.apply(this, arguments);
        if (result != undefined && !result) {
            event.preventDefault();
        }
    }
    return result;
};
function patchProperty(obj, prop, prototype) {
    let desc = ObjectGetOwnPropertyDescriptor(obj, prop);
    if (!desc && prototype) {
        // when patch window object, use prototype to check prop exist or not
        const prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, prop);
        if (prototypeDesc) {
            desc = { enumerable: true, configurable: true };
        }
    }
    // if the descriptor not exists or is not configurable
    // just return
    if (!desc || !desc.configurable) {
        return;
    }
    const onPropPatchedSymbol = zoneSymbol('on' + prop + 'patched');
    if (obj.hasOwnProperty(onPropPatchedSymbol) && obj[onPropPatchedSymbol]) {
        return;
    }
    // A property descriptor cannot have getter/setter and be writable
    // deleting the writable and value properties avoids this error:
    //
    // TypeError: property descriptors must not specify a value or be writable when a
    // getter or setter has been specified
    delete desc.writable;
    delete desc.value;
    const originalDescGet = desc.get;
    const originalDescSet = desc.set;
    // slice(2) cuz 'onclick' -> 'click', etc
    const eventName = prop.slice(2);
    let eventNameSymbol = zoneSymbolEventNames$1[eventName];
    if (!eventNameSymbol) {
        eventNameSymbol = zoneSymbolEventNames$1[eventName] = zoneSymbol('ON_PROPERTY' + eventName);
    }
    desc.set = function (newValue) {
        // in some of windows's onproperty callback, this is undefined
        // so we need to check it
        let target = this;
        if (!target && obj === _global) {
            target = _global;
        }
        if (!target) {
            return;
        }
        const previousValue = target[eventNameSymbol];
        if (typeof previousValue === 'function') {
            target.removeEventListener(eventName, wrapFn);
        }
        // issue #978, when onload handler was added before loading zone.js
        // we should remove it with originalDescSet
        originalDescSet && originalDescSet.call(target, null);
        target[eventNameSymbol] = newValue;
        if (typeof newValue === 'function') {
            target.addEventListener(eventName, wrapFn, false);
        }
    };
    // The getter would return undefined for unassigned properties but the default value of an
    // unassigned property is null
    desc.get = function () {
        // in some of windows's onproperty callback, this is undefined
        // so we need to check it
        let target = this;
        if (!target && obj === _global) {
            target = _global;
        }
        if (!target) {
            return null;
        }
        const listener = target[eventNameSymbol];
        if (listener) {
            return listener;
        }
        else if (originalDescGet) {
            // result will be null when use inline event attribute,
            // such as <button onclick="func();">OK</button>
            // because the onclick function is internal raw uncompiled handler
            // the onclick will be evaluated when first time event was triggered or
            // the property is accessed, https://github.com/angular/zone.js/issues/525
            // so we should use original native get to retrieve the handler
            let value = originalDescGet.call(this);
            if (value) {
                desc.set.call(this, value);
                if (typeof target[REMOVE_ATTRIBUTE] === 'function') {
                    target.removeAttribute(prop);
                }
                return value;
            }
        }
        return null;
    };
    ObjectDefineProperty(obj, prop, desc);
    obj[onPropPatchedSymbol] = true;
}
function patchOnProperties(obj, properties, prototype) {
    if (properties) {
        for (let i = 0; i < properties.length; i++) {
            patchProperty(obj, 'on' + properties[i], prototype);
        }
    }
    else {
        const onProperties = [];
        for (const prop in obj) {
            if (prop.slice(0, 2) == 'on') {
                onProperties.push(prop);
            }
        }
        for (let j = 0; j < onProperties.length; j++) {
            patchProperty(obj, onProperties[j], prototype);
        }
    }
}
zoneSymbol('originalInstance');
function copySymbolProperties(src, dest) {
    if (typeof Object.getOwnPropertySymbols !== 'function') {
        return;
    }
    const symbols = Object.getOwnPropertySymbols(src);
    symbols.forEach((symbol) => {
        const desc = Object.getOwnPropertyDescriptor(src, symbol);
        Object.defineProperty(dest, symbol, {
            get: function () {
                return src[symbol];
            },
            set: function (value) {
                if (desc && (!desc.writable || typeof desc.set !== 'function')) {
                    // if src[symbol] is not writable or not have a setter, just return
                    return;
                }
                src[symbol] = value;
            },
            enumerable: desc ? desc.enumerable : true,
            configurable: desc ? desc.configurable : true
        });
    });
}
let shouldCopySymbolProperties = false;
function setShouldCopySymbolProperties(flag) {
    shouldCopySymbolProperties = flag;
}
function patchMethod(target, name, patchFn) {
    let proto = target;
    while (proto && !proto.hasOwnProperty(name)) {
        proto = ObjectGetPrototypeOf(proto);
    }
    if (!proto && target[name]) {
        // somehow we did not find it, but we can see it. This happens on IE for Window properties.
        proto = target;
    }
    const delegateName = zoneSymbol(name);
    let delegate = null;
    if (proto && (!(delegate = proto[delegateName]) || !proto.hasOwnProperty(delegateName))) {
        delegate = proto[delegateName] = proto[name];
        // check whether proto[name] is writable
        // some property is readonly in safari, such as HtmlCanvasElement.prototype.toBlob
        const desc = proto && ObjectGetOwnPropertyDescriptor(proto, name);
        if (isPropertyWritable(desc)) {
            const patchDelegate = patchFn(delegate, delegateName, name);
            proto[name] = function () {
                return patchDelegate(this, arguments);
            };
            attachOriginToPatched(proto[name], delegate);
            if (shouldCopySymbolProperties) {
                copySymbolProperties(delegate, proto[name]);
            }
        }
    }
    return delegate;
}
// TODO: @JiaLiPassion, support cancel task later if necessary
function patchMacroTask(obj, funcName, metaCreator) {
    let setNative = null;
    function scheduleTask(task) {
        const data = task.data;
        data.args[data.cbIdx] = function () {
            task.invoke.apply(this, arguments);
        };
        setNative.apply(data.target, data.args);
        return task;
    }
    setNative = patchMethod(obj, funcName, (delegate) => function (self, args) {
        const meta = metaCreator(self, args);
        if (meta.cbIdx >= 0 && typeof args[meta.cbIdx] === 'function') {
            return scheduleMacroTaskWithCurrentZone(meta.name, args[meta.cbIdx], meta, scheduleTask);
        }
        else {
            // cause an error by calling it directly.
            return delegate.apply(self, args);
        }
    });
}
function patchMicroTask(obj, funcName, metaCreator) {
    let setNative = null;
    function scheduleTask(task) {
        const data = task.data;
        data.args[data.cbIdx] = function () {
            task.invoke.apply(this, arguments);
        };
        setNative.apply(data.target, data.args);
        return task;
    }
    setNative = patchMethod(obj, funcName, (delegate) => function (self, args) {
        const meta = metaCreator(self, args);
        if (meta.cbIdx >= 0 && typeof args[meta.cbIdx] === 'function') {
            return Zone.current.scheduleMicroTask(meta.name, args[meta.cbIdx], meta, scheduleTask);
        }
        else {
            // cause an error by calling it directly.
            return delegate.apply(self, args);
        }
    });
}
function attachOriginToPatched(patched, original) {
    patched[zoneSymbol('OriginalDelegate')] = original;
}

/**
 * @license
 * Copyright Google LLC 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', (global, Zone, api) => {
    const ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
    const ObjectDefineProperty = Object.defineProperty;
    function readableObjectToString(obj) {
        if (obj && obj.toString === Object.prototype.toString) {
            const className = obj.constructor && obj.constructor.name;
            return (className ? className : '') + ': ' + JSON.stringify(obj);
        }
        return obj ? obj.toString() : Object.prototype.toString.call(obj);
    }
    const __symbol__ = api.symbol;
    const _uncaughtPromiseErrors = [];
    const isDisableWrappingUncaughtPromiseRejection = global[__symbol__('DISABLE_WRAPPING_UNCAUGHT_PROMISE_REJECTION')] === true;
    const symbolPromise = __symbol__('Promise');
    const symbolThen = __symbol__('then');
    const creationTrace = '__creationTrace__';
    api.onUnhandledError = (e) => {
        if (api.showUncaughtError()) {
            const 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 = () => {
        while (_uncaughtPromiseErrors.length) {
            const uncaughtPromiseError = _uncaughtPromiseErrors.shift();
            try {
                uncaughtPromiseError.zone.runGuarded(() => {
                    if (uncaughtPromiseError.throwOriginal) {
                        throw uncaughtPromiseError.rejection;
                    }
                    throw uncaughtPromiseError;
                });
            }
            catch (error) {
                handleUnhandledRejection(error);
            }
        }
    };
    const UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL = __symbol__('unhandledPromiseRejectionHandler');
    function handleUnhandledRejection(e) {
        api.onUnhandledError(e);
        try {
            const handler = Zone[UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL];
            if (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);
    }
    const symbolState = __symbol__('state');
    const symbolValue = __symbol__('value');
    const symbolFinally = __symbol__('finally');
    const symbolParentPromiseValue = __symbol__('parentPromiseValue');
    const symbolParentPromiseState = __symbol__('parentPromiseState');
    const source = 'Promise.then';
    const UNRESOLVED = null;
    const RESOLVED = true;
    const REJECTED = false;
    const REJECTED_NO_CATCH = 0;
    function makeResolver(promise, state) {
        return (v) => {
            try {
                resolvePromise(promise, state, v);
            }
            catch (err) {
                resolvePromise(promise, false, err);
            }
            // Do not return value or you will break the Promise spec.
        };
    }
    const once = function () {
        let wasCalled = false;
        return function wrapper(wrappedFunction) {
            return function () {
                if (wasCalled) {
                    return;
                }
                wasCalled = true;
                wrappedFunction.apply(null, arguments);
            };
        };
    };
    const TYPE_ERROR = 'Promise resolved with itself';
    const CURRENT_TASK_TRACE_SYMBOL = __symbol__('currentTaskTrace');
    // Promise Resolution
    function resolvePromise(promise, state, value) {
        const onceWrapper = once();
        if (promise === value) {
            throw new TypeError(TYPE_ERROR);
        }
        if (promise[symbolState] === UNRESOLVED) {
            // should only get value.then once based on promise spec.
            let then = null;
            try {
                if (typeof value === 'object' || typeof value === 'function') {
                    then = value && value.then;
                }
            }
            catch (err) {
                onceWrapper(() => {
                    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(() => {
                        resolvePromise(promise, false, err);
                    })();
                }
            }
            else {
                promise[symbolState] = state;
                const 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
                    const 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 (let 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;
                    let uncaughtPromiseError = value;
                    try {
                        // Here we throws a new Error to print more readable error log
                        // and if the value is not an error, zone.js builds an `Error`
                        // Object here to attach the stack information.
                        throw new Error('Uncaught (in promise): ' + readableObjectToString(value) +
                            (value && value.stack ? '\n' + value.stack : ''));
                    }
                    catch (err) {
                        uncaughtPromiseError = err;
                    }
                    if (isDisableWrappingUncaughtPromiseRejection) {
                        // If disable wrapping uncaught promise reject
                        // use the value instead of wrapping it.
                        uncaughtPromiseError.throwOriginal = true;
                    }
                    uncaughtPromiseError.rejection = value;
                    uncaughtPromiseError.promise = promise;
                    uncaughtPromiseError.zone = Zone.current;
                    uncaughtPromiseError.task = Zone.currentTask;
                    _uncaughtPromiseErrors.push(uncaughtPromiseError);
                    api.scheduleMicroTask(); // to make sure that it is running
                }
            }
        }
        // Resolving an already resolved promise is a noop.
        return promise;
    }
    const 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 {
                const handler = Zone[REJECTION_HANDLED_HANDLER];
                if (handler && typeof handler === 'function') {
                    handler.call(this, { rejection: promise[symbolValue], promise: promise });
                }
            }
            catch (err) {
            }
            promise[symbolState] = REJECTED;
            for (let i = 0; i < _uncaughtPromiseErrors.length; i++) {
                if (promise === _uncaughtPromiseErrors[i].promise) {
                    _uncaughtPromiseErrors.splice(i, 1);
                }
            }
        }
    }
    function scheduleResolveOrReject(promise, zone, chainPromise, onFulfilled, onRejected) {
        clearRejectedNoCatch(promise);
        const promiseState = promise[symbolState];
        const delegate = promiseState ?
            (typeof onFulfilled === 'function') ? onFulfilled : forwardResolution :
            (typeof onRejected === 'function') ? onRejected :
                forwardRejection;
        zone.scheduleMicroTask(source, () => {
            try {
                const parentPromiseValue = promise[symbolValue];
                const 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
                const 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);
    }
    const ZONE_AWARE_PROMISE_TO_STRING = 'function ZoneAwarePromise() { [native code] }';
    const noop = function () { };
    const AggregateError = global.AggregateError;
    class ZoneAwarePromise {
        static toString() {
            return ZONE_AWARE_PROMISE_TO_STRING;
        }
        static resolve(value) {
            return resolvePromise(new this(null), RESOLVED, value);
        }
        static reject(error) {
            return resolvePromise(new this(null), REJECTED, error);
        }
        static any(values) {
            if (!values || typeof values[Symbol.iterator] !== 'function') {
                return Promise.reject(new AggregateError([], 'All promises were rejected'));
            }
            const promises = [];
            let count = 0;
            try {
                for (let v of values) {
                    count++;
                    promises.push(ZoneAwarePromise.resolve(v));
                }
            }
            catch (err) {
                return Promise.reject(new AggregateError([], 'All promises were rejected'));
            }
            if (count === 0) {
                return Promise.reject(new AggregateError([], 'All promises were rejected'));
            }
            let finished = false;
            const errors = [];
            return new ZoneAwarePromise((resolve, reject) => {
                for (let i = 0; i < promises.length; i++) {
                    promises[i].then(v => {
                        if (finished) {
                            return;
                        }
                        finished = true;
                        resolve(v);
                    }, err => {
                        errors.push(err);
                        count--;
                        if (count === 0) {
                            finished = true;
                            reject(new AggregateError(errors, 'All promises were rejected'));
                        }
                    });
                }
            });
        }
        ;
        static race(values) {
            let resolve;
            let reject;
            let promise = new this((res, rej) => {
                resolve = res;
                reject = rej;
            });
            function onResolve(value) {
                resolve(value);
            }
            function onReject(error) {
                reject(error);
            }
            for (let value of values) {
                if (!isThenable(value)) {
                    value = this.resolve(value);
                }
                value.then(onResolve, onReject);
            }
            return promise;
        }
        static all(values) {
            return ZoneAwarePromise.allWithCallback(values);
        }
        static allSettled(values) {
            const P = this && this.prototype instanceof ZoneAwarePromise ? this : ZoneAwarePromise;
            return P.allWithCallback(values, {
                thenCallback: (value) => ({ status: 'fulfilled', value }),
                errorCallback: (err) => ({ status: 'rejected', reason: err })
            });
        }
        static allWithCallback(values, callback) {
            let resolve;
            let reject;
            let promise = new this((res, rej) => {
                resolve = res;
                reject = rej;
            });
            // Start at 2 to prevent prematurely resolving if .then is called immediately.
            let unresolvedCount = 2;
            let valueIndex = 0;
            const resolvedValues = [];
            for (let value of values) {
                if (!isThenable(value)) {
                    value = this.resolve(value);
                }
                const curValueIndex = valueIndex;
                try {
                    value.then((value) => {
                        resolvedValues[curValueIndex] = callback ? callback.thenCallback(value) : value;
                        unresolvedCount--;
                        if (unresolvedCount === 0) {
                            resolve(resolvedValues);
                        }
                    }, (err) => {
                        if (!callback) {
                            reject(err);
                        }
                        else {
                            resolvedValues[curValueIndex] = callback.errorCallback(err);
                            unresolvedCount--;
                            if (unresolvedCount === 0) {
                                resolve(resolvedValues);
                            }
                        }
                    });
                }
                catch (thenErr) {
                    reject(thenErr);
                }
                unresolvedCount++;
                valueIndex++;
            }
            // Make the unresolvedCount zero-based again.
            unresolvedCount -= 2;
            if (unresolvedCount === 0) {
                resolve(resolvedValues);
            }
            return promise;
        }
        constructor(executor) {
            const promise = this;
            if (!(promise instanceof ZoneAwarePromise)) {
                throw new Error('Must be an instanceof Promise.');
            }
            promise[symbolState] = UNRESOLVED;
            promise[symbolValue] = []; // queue;
            try {
                const onceWrapper = once();
                executor &&
                    executor(onceWrapper(makeResolver(promise, RESOLVED)), onceWrapper(makeResolver(promise, REJECTED)));
            }
            catch (error) {
                resolvePromise(promise, false, error);
            }
        }
        get [Symbol.toStringTag]() {
            return 'Promise';
        }
        get [Symbol.species]() {
            return ZoneAwarePromise;
        }
        then(onFulfilled, onRejected) {
            var _a;
            // We must read `Symbol.species` safely because `this` may be anything. For instance, `this`
            // may be an object without a prototype (created through `Object.create(null)`); thus
            // `this.constructor` will be undefined. One of the use cases is SystemJS creating
            // prototype-less objects (modules) via `Object.create(null)`. The SystemJS creates an empty
            // object and copies promise properties into that object (within the `getOrCreateLoad`
            // function). The zone.js then checks if the resolved value has the `then` method and invokes
            // it with the `value` context. Otherwise, this will throw an error: `TypeError: Cannot read
            // properties of undefined (reading 'Symbol(Symbol.species)')`.
            let C = (_a = this.constructor) === null || _a === void 0 ? void 0 : _a[Symbol.species];
            if (!C || typeof C !== 'function') {
                C = this.constructor || ZoneAwarePromise;
            }
            const chainPromise = new C(noop);
            const zone = Zone.current;
            if (this[symbolState] == UNRESOLVED) {
                this[symbolValue].push(zone, chainPromise, onFulfilled, onRejected);
            }
            else {
                scheduleResolveOrReject(this, zone, chainPromise, onFulfilled, onRejected);
            }
            return chainPromise;
        }
        catch(onRejected) {
            return this.then(null, onRejected);
        }
        finally(onFinally) {
            var _a;
            // See comment on the call to `then` about why thee `Symbol.species` is safely accessed.
            let C = (_a = this.constructor) === null || _a === void 0 ? void 0 : _a[Symbol.species];
            if (!C || typeof C !== 'function') {
                C = ZoneAwarePromise;
            }
            const chainPromise = new C(noop);
            chainPromise[symbolFinally] = symbolFinally;
            const zone = Zone.current;
            if (this[symbolState] == UNRESOLVED) {
                this[symbolValue].push(zone, chainPromise, onFinally, onFinally);
            }
            else {
                scheduleResolveOrReject(this, zone, chainPromise, onFinally, onFinally);
            }
            return chainPromise;
        }
    }
    // Protect against aggressive optimizers dropping seemingly unused properties.
    // E.g. Closure Compiler in advanced mode.
    ZoneAwarePromise['resolve'] = ZoneAwarePromise.resolve;
    ZoneAwarePromise['reject'] = ZoneAwarePromise.reject;
    ZoneAwarePromise['race'] = ZoneAwarePromise.race;
    ZoneAwarePromise['all'] = ZoneAwarePromise.all;
    const NativePromise = global[symbolPromise] = global['Promise'];
    global['Promise'] = ZoneAwarePromise;
    const symbolThenPatched = __symbol__('thenPatched');
    function patchThen(Ctor) {
        const proto = Ctor.prototype;
        const prop = ObjectGetOwnPropertyDescriptor(proto, 'then');
        if (prop && (prop.writable === false || !prop.configurable)) {
            // check Ctor.prototype.then propertyDescriptor is writable or not
            // in meteor env, writable is false, we should ignore such case
            return;
        }
        const originalThen = proto.then;
        // Keep a reference to the original method.
        proto[symbolThen] = originalThen;
        Ctor.prototype.then = function (onResolve, onReject) {
            const wrapped = new ZoneAwarePromise((resolve, reject) => {
                originalThen.call(this, resolve, reject);
            });
            return wrapped.then(onResolve, onReject);
        };
        Ctor[symbolThenPatched] = true;
    }
    api.patchThen = patchThen;
    function zoneify(fn) {
        return function (self, args) {
            let resultPromise = fn.apply(self, args);
            if (resultPromise instanceof ZoneAwarePromise) {
                return resultPromise;
            }
            let ctor = resultPromise.constructor;
            if (!ctor[symbolThenPatched]) {
                patchThen(ctor);
            }
            return resultPromise;
        };
    }
    if (NativePromise) {
        patchThen(NativePromise);
        patchMethod(global, 'fetch', delegate => zoneify(delegate));
    }
    // This is not part of public API, but it is useful for tests, so we expose it.
    Promise[Zone.__symbol__('uncaughtPromiseErrors')] = _uncaughtPromiseErrors;
    return ZoneAwarePromise;
});

/**
 * @license
 * Copyright Google LLC 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
 */
// override Function.prototype.toString to make zone.js patched function
// look like native function
Zone.__load_patch('toString', (global) => {
    // patch Func.prototype.toString to let them look like native
    const originalFunctionToString = Function.prototype.toString;
    const ORIGINAL_DELEGATE_SYMBOL = zoneSymbol('OriginalDelegate');
    const PROMISE_SYMBOL = zoneSymbol('Promise');
    const ERROR_SYMBOL = zoneSymbol('Error');
    const newFunctionToString = function toString() {
        if (typeof this === 'function') {
            const originalDelegate = this[ORIGINAL_DELEGATE_SYMBOL];
            if (originalDelegate) {
                if (typeof originalDelegate === 'function') {
                    return originalFunctionToString.call(originalDelegate);
                }
                else {
                    return Object.prototype.toString.call(originalDelegate);
                }
            }
            if (this === Promise) {
                const nativePromise = global[PROMISE_SYMBOL];
                if (nativePromise) {
                    return originalFunctionToString.call(nativePromise);
                }
            }
            if (this === Error) {
                const nativeError = global[ERROR_SYMBOL];
                if (nativeError) {
                    return originalFunctionToString.call(nativeError);
                }
            }
        }
        return originalFunctionToString.call(this);
    };
    newFunctionToString[ORIGINAL_DELEGATE_SYMBOL] = originalFunctionToString;
    Function.prototype.toString = newFunctionToString;
    // patch Object.prototype.toString to let them look like native
    const originalObjectToString = Object.prototype.toString;
    const PROMISE_OBJECT_TO_STRING = '[object Promise]';
    Object.prototype.toString = function () {
        if (typeof Promise === 'function' && this instanceof Promise) {
            return PROMISE_OBJECT_TO_STRING;
        }
        return originalObjectToString.call(this);
    };
});

/**
 * @license
 * Copyright Google LLC 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('node_util', (global, Zone, api) => {
    api.patchOnProperties = patchOnProperties;
    api.patchMethod = patchMethod;
    api.bindArguments = bindArguments;
    api.patchMacroTask = patchMacroTask;
    setShouldCopySymbolProperties(true);
});

/**
 * @license
 * Copyright Google LLC 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
 */
let passiveSupported = false;
if (typeof window !== 'undefined') {
    try {
        const options = Object.defineProperty({}, 'passive', {
            get: function () {
                passiveSupported = true;
            }
        });
        // Note: We pass the `options` object as the event handler too. This is not compatible with the
        // signature of `addEventListener` or `removeEventListener` but enables us to remove the handler
        // without an actual handler.
        window.addEventListener('test', options, options);
        window.removeEventListener('test', options, options);
    }
    catch (err) {
        passiveSupported = false;
    }
}
// an identifier to tell ZoneTask do not create a new invoke closure
const OPTIMIZED_ZONE_EVENT_TASK_DATA = {
    useG: true
};
const zoneSymbolEventNames = {};
const globalSources = {};
const EVENT_NAME_SYMBOL_REGX = new RegExp('^' + ZONE_SYMBOL_PREFIX + '(\\w+)(true|false)$');
const IMMEDIATE_PROPAGATION_SYMBOL = zoneSymbol('propagationStopped');
function prepareEventNames(eventName, eventNameToString) {
    const falseEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + FALSE_STR;
    const trueEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + TRUE_STR;
    const symbol = ZONE_SYMBOL_PREFIX + falseEventName;
    const symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;
    zoneSymbolEventNames[eventName] = {};
    zoneSymbolEventNames[eventName][FALSE_STR] = symbol;
    zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;
}
function patchEventTarget(_global, api, apis, patchOptions) {
    const ADD_EVENT_LISTENER = (patchOptions && patchOptions.add) || ADD_EVENT_LISTENER_STR;
    const REMOVE_EVENT_LISTENER = (patchOptions && patchOptions.rm) || REMOVE_EVENT_LISTENER_STR;
    const LISTENERS_EVENT_LISTENER = (patchOptions && patchOptions.listeners) || 'eventListeners';
    const REMOVE_ALL_LISTENERS_EVENT_LISTENER = (patchOptions && patchOptions.rmAll) || 'removeAllListeners';
    const zoneSymbolAddEventListener = zoneSymbol(ADD_EVENT_LISTENER);
    const ADD_EVENT_LISTENER_SOURCE = '.' + ADD_EVENT_LISTENER + ':';
    const PREPEND_EVENT_LISTENER = 'prependListener';
    const PREPEND_EVENT_LISTENER_SOURCE = '.' + PREPEND_EVENT_LISTENER + ':';
    const invokeTask = function (task, target, event) {
        // for better performance, check isRemoved which is set
        // by removeEventListener
        if (task.isRemoved) {
            return;
        }
        const delegate = task.callback;
        if (typeof delegate === 'object' && delegate.handleEvent) {
            // create the bind version of handleEvent when invoke
            task.callback = (event) => delegate.handleEvent(event);
            task.originalDelegate = delegate;
        }
        // invoke static task.invoke
        // need to try/catch error here, otherwise, the error in one event listener
        // will break the executions of the other event listeners. Also error will
        // not remove the event listener when `once` options is true.
        let error;
        try {
            task.invoke(task, target, [event]);
        }
        catch (err) {
            error = err;
        }
        const options = task.options;
        if (options && typeof options === 'object' && options.once) {
            // if options.once is true, after invoke once remove listener here
            // only browser need to do this, nodejs eventEmitter will cal removeListener
            // inside EventEmitter.once
            const delegate = task.originalDelegate ? task.originalDelegate : task.callback;
            target[REMOVE_EVENT_LISTENER].call(target, event.type, delegate, options);
        }
        return error;
    };
    function globalCallback(context, event, isCapture) {
        // https://github.com/angular/zone.js/issues/911, in IE, sometimes
        // event will be undefined, so we need to use window.event
        event = event || _global.event;
        if (!event) {
            return;
        }
        // event.target is needed for Samsung TV and SourceBuffer
        // || global is needed https://github.com/angular/zone.js/issues/190
        const target = context || event.target || _global;
        const tasks = target[zoneSymbolEventNames[event.type][isCapture ? TRUE_STR : FALSE_STR]];
        if (tasks) {
            const errors = [];
            // invoke all tasks which attached to current target with given event.type and capture = false
            // for performance concern, if task.length === 1, just invoke
            if (tasks.length === 1) {
                const err = invokeTask(tasks[0], target, event);
                err && errors.push(err);
            }
            else {
                // https://github.com/angular/zone.js/issues/836
                // copy the tasks array before invoke, to avoid
                // the callback will remove itself or other listener
                const copyTasks = tasks.slice();
                for (let i = 0; i < copyTasks.length; i++) {
                    if (event && event[IMMEDIATE_PROPAGATION_SYMBOL] === true) {
                        break;
                    }
                    const err = invokeTask(copyTasks[i], target, event);
                    err && errors.push(err);
                }
            }
            // Since there is only one error, we don't need to schedule microTask
            // to throw the error.
            if (errors.length === 1) {
                throw errors[0];
            }
            else {
                for (let i = 0; i < errors.length; i++) {
                    const err = errors[i];
                    api.nativeScheduleMicroTask(() => {
                        throw err;
                    });
                }
            }
        }
    }
    // global shared zoneAwareCallback to handle all event callback with capture = false
    const globalZoneAwareCallback = function (event) {
        return globalCallback(this, event, false);
    };
    // global shared zoneAwareCallback to handle all event callback with capture = true
    const globalZoneAwareCaptureCallback = function (event) {
        return globalCallback(this, event, true);
    };
    function patchEventTargetMethods(obj, patchOptions) {
        if (!obj) {
            return false;
        }
        let useGlobalCallback = true;
        if (patchOptions && patchOptions.useG !== undefined) {
            useGlobalCallback = patchOptions.useG;
        }
        const validateHandler = patchOptions && patchOptions.vh;
        let checkDuplicate = true;
        if (patchOptions && patchOptions.chkDup !== undefined) {
            checkDuplicate = patchOptions.chkDup;
        }
        let returnTarget = false;
        if (patchOptions && patchOptions.rt !== undefined) {
            returnTarget = patchOptions.rt;
        }
        let proto = obj;
        while (proto && !proto.hasOwnProperty(ADD_EVENT_LISTENER)) {
            proto = ObjectGetPrototypeOf(proto);
        }
        if (!proto && obj[ADD_EVENT_LISTENER]) {
            // somehow we did not find it, but we can see it. This happens on IE for Window properties.
            proto = obj;
        }
        if (!proto) {
            return false;
        }
        if (proto[zoneSymbolAddEventListener]) {
            return false;
        }
        const eventNameToString = patchOptions && patchOptions.eventNameToString;
        // a shared global taskData to pass data for scheduleEventTask
        // so we do not need to create a new object just for pass some data
        const taskData = {};
        const nativeAddEventListener = proto[zoneSymbolAddEventListener] = proto[ADD_EVENT_LISTENER];
        const nativeRemoveEventListener = proto[zoneSymbol(REMOVE_EVENT_LISTENER)] =
            proto[REMOVE_EVENT_LISTENER];
        const nativeListeners = proto[zoneSymbol(LISTENERS_EVENT_LISTENER)] =
            proto[LISTENERS_EVENT_LISTENER];
        const nativeRemoveAllListeners = proto[zoneSymbol(REMOVE_ALL_LISTENERS_EVENT_LISTENER)] =
            proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER];
        let nativePrependEventListener;
        if (patchOptions && patchOptions.prepend) {
            nativePrependEventListener = proto[zoneSymbol(patchOptions.prepend)] =
                proto[patchOptions.prepend];
        }
        /**
         * This util function will build an option object with passive option
         * to handle all possible input from the user.
         */
        function buildEventListenerOptions(options, passive) {
            if (!passiveSupported && typeof options === 'object' && options) {
                // doesn't support passive but user want to pass an object as options.
                // this will not work on some old browser, so we just pass a boolean
                // as useCapture parameter
                return !!options.capture;
            }
            if (!passiveSupported || !passive) {
                return options;
            }
            if (typeof options === 'boolean') {
                return { capture: options, passive: true };
            }
            if (!options) {
                return { passive: true };
            }
            if (typeof options === 'object' && options.passive !== false) {
                return Object.assign(Object.assign({}, options), { passive: true });
            }
            return options;
        }
        const customScheduleGlobal = function (task) {
            // if there is already a task for the eventName + capture,
            // just return, because we use the shared globalZoneAwareCallback here.
            if (taskData.isExisting) {
                return;
            }
            return nativeAddEventListener.call(taskData.target, taskData.eventName, taskData.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, taskData.options);
        };
        const customCancelGlobal = function (task) {
            // if task is not marked as isRemoved, this call is directly
            // from Zone.prototype.cancelTask, we should remove the task
            // from tasksList of target first
            if (!task.isRemoved) {
                const symbolEventNames = zoneSymbolEventNames[task.eventName];
                let symbolEventName;
                if (symbolEventNames) {
                    symbolEventName = symbolEventNames[task.capture ? TRUE_STR : FALSE_STR];
                }
                const existingTasks = symbolEventName && task.target[symbolEventName];
                if (existingTasks) {
                    for (let i = 0; i < existingTasks.length; i++) {
                        const existingTask = existingTasks[i];
                        if (existingTask === task) {
                            existingTasks.splice(i, 1);
                            // set isRemoved to data for faster invokeTask check
                            task.isRemoved = true;
                            if (existingTasks.length === 0) {
                                // all tasks for the eventName + capture have gone,
                                // remove globalZoneAwareCallback and remove the task cache from target
                                task.allRemoved = true;
                                task.target[symbolEventName] = null;
                            }
                            break;
                        }
                    }
                }
            }
            // if all tasks for the eventName + capture have gone,
            // we will really remove the global event callback,
            // if not, return
            if (!task.allRemoved) {
                return;
            }
            return nativeRemoveEventListener.call(task.target, task.eventName, task.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, task.options);
        };
        const customScheduleNonGlobal = function (task) {
            return nativeAddEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);
        };
        const customSchedulePrepend = function (task) {
            return nativePrependEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);
        };
        const customCancelNonGlobal = function (task) {
            return nativeRemoveEventListener.call(task.target, task.eventName, task.invoke, task.options);
        };
        const customSchedule = useGlobalCallback ? customScheduleGlobal : customScheduleNonGlobal;
        const customCancel = useGlobalCallback ? customCancelGlobal : customCancelNonGlobal;
        const compareTaskCallbackVsDelegate = function (task, delegate) {
            const typeOfDelegate = typeof delegate;
            return (typeOfDelegate === 'function' && task.callback === delegate) ||
                (typeOfDelegate === 'object' && task.originalDelegate === delegate);
        };
        const compare = (patchOptions && patchOptions.diff) ? patchOptions.diff : compareTaskCallbackVsDelegate;
        const unpatchedEvents = Zone[zoneSymbol('UNPATCHED_EVENTS')];
        const passiveEvents = _global[zoneSymbol('PASSIVE_EVENTS')];
        const makeAddListener = function (nativeListener, addSource, customScheduleFn, customCancelFn, returnTarget = false, prepend = false) {
            return function () {
                const target = this || _global;
                let eventName = arguments[0];
                if (patchOptions && patchOptions.transferEventName) {
                    eventName = patchOptions.transferEventName(eventName);
                }
                let delegate = arguments[1];
                if (!delegate) {
                    return nativeListener.apply(this, arguments);
                }
                if (isNode && eventName === 'uncaughtException') {
                    // don't patch uncaughtException of nodejs to prevent endless loop
                    return nativeListener.apply(this, arguments);
                }
                // don't create the bind delegate function for handleEvent
                // case here to improve addEventListener performance
                // we will create the bind delegate when invoke
                let isHandleEvent = false;
                if (typeof delegate !== 'function') {
                    if (!delegate.handleEvent) {
                        return nativeListener.apply(this, arguments);
                    }
                    isHandleEvent = true;
                }
                if (validateHandler && !validateHandler(nativeListener, delegate, target, arguments)) {
                    return;
                }
                const passive = passiveSupported && !!passiveEvents && passiveEvents.indexOf(eventName) !== -1;
                const options = buildEventListenerOptions(arguments[2], passive);
                if (unpatchedEvents) {
                    // check unpatched list
                    for (let i = 0; i < unpatchedEvents.length; i++) {
                        if (eventName === unpatchedEvents[i]) {
                            if (passive) {
                                return nativeListener.call(target, eventName, delegate, options);
                            }
                            else {
                                return nativeListener.apply(this, arguments);
                            }
                        }
                    }
                }
                const capture = !options ? false : typeof options === 'boolean' ? true : options.capture;
                const once = options && typeof options === 'object' ? options.once : false;
                const zone = Zone.current;
                let symbolEventNames = zoneSymbolEventNames[eventName];
                if (!symbolEventNames) {
                    prepareEventNames(eventName, eventNameToString);
                    symbolEventNames = zoneSymbolEventNames[eventName];
                }
                const symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];
                let existingTasks = target[symbolEventName];
                let isExisting = false;
                if (existingTasks) {
                    // already have task registered
                    isExisting = true;
                    if (checkDuplicate) {
                        for (let i = 0; i < existingTasks.length; i++) {
                            if (compare(existingTasks[i], delegate)) {
                                // same callback, same capture, same event name, just return
                                return;
                            }
                        }
                    }
                }
                else {
                    existingTasks = target[symbolEventName] = [];
                }
                let source;
                const constructorName = target.constructor['name'];
                const targetSource = globalSources[constructorName];
                if (targetSource) {
                    source = targetSource[eventName];
                }
                if (!source) {
                    source = constructorName + addSource +
                        (eventNameToString ? eventNameToString(eventName) : eventName);
                }
                // do not create a new object as task.data to pass those things
                // just use the global shared one
                taskData.options = options;
                if (once) {
                    // if addEventListener with once options, we don't pass it to
                    // native addEventListener, instead we keep the once setting
                    // and handle ourselves.
                    taskData.options.once = false;
                }
                taskData.target = target;
                taskData.capture = capture;
                taskData.eventName = eventName;
                taskData.isExisting = isExisting;
                const data = useGlobalCallback ? OPTIMIZED_ZONE_EVENT_TASK_DATA : undefined;
                // keep taskData into data to allow onScheduleEventTask to access the task information
                if (data) {
                    data.taskData = taskData;
                }
                const task = zone.scheduleEventTask(source, delegate, data, customScheduleFn, customCancelFn);
                // should clear taskData.target to avoid memory leak
                // issue, https://github.com/angular/angular/issues/20442
                taskData.target = null;
                // need to clear up taskData because it is a global object
                if (data) {
                    data.taskData = null;
                }
                // have to save those information to task in case
                // application may call task.zone.cancelTask() directly
                if (once) {
                    options.once = true;
                }
                if (!(!passiveSupported && typeof task.options === 'boolean')) {
                    // if not support passive, and we pass an option object
                    // to addEventListener, we should save the options to task
                    task.options = options;
                }
                task.target = target;
                task.capture = capture;
                task.eventName = eventName;
                if (isHandleEvent) {
                    // save original delegate for compare to check duplicate
                    task.originalDelegate = delegate;
                }
                if (!prepend) {
                    existingTasks.push(task);
                }
                else {
                    existingTasks.unshift(task);
                }
                if (returnTarget) {
                    return target;
                }
            };
        };
        proto[ADD_EVENT_LISTENER] = makeAddListener(nativeAddEventListener, ADD_EVENT_LISTENER_SOURCE, customSchedule, customCancel, returnTarget);
        if (nativePrependEventListener) {
            proto[PREPEND_EVENT_LISTENER] = makeAddListener(nativePrependEventListener, PREPEND_EVENT_LISTENER_SOURCE, customSchedulePrepend, customCancel, returnTarget, true);
        }
        proto[REMOVE_EVENT_LISTENER] = function () {
            const target = this || _global;
            let eventName = arguments[0];
            if (patchOptions && patchOptions.transferEventName) {
                eventName = patchOptions.transferEventName(eventName);
            }
            const options = arguments[2];
            const capture = !options ? false : typeof options === 'boolean' ? true : options.capture;
            const delegate = arguments[1];
            if (!delegate) {
                return nativeRemoveEventListener.apply(this, arguments);
            }
            if (validateHandler &&
                !validateHandler(nativeRemoveEventListener, delegate, target, arguments)) {
                return;
            }
            const symbolEventNames = zoneSymbolEventNames[eventName];
            let symbolEventName;
            if (symbolEventNames) {
                symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];
            }
            const existingTasks = symbolEventName && target[symbolEventName];
            if (existingTasks) {
                for (let i = 0; i < existingTasks.length; i++) {
                    const existingTask = existingTasks[i];
                    if (compare(existingTask, delegate)) {
                        existingTasks.splice(i, 1);
                        // set isRemoved to data for faster invokeTask check
                        existingTask.isRemoved = true;
                        if (existingTasks.length === 0) {
                            // all tasks for the eventName + capture have gone,
                            // remove globalZoneAwareCallback and remove the task cache from target
                            existingTask.allRemoved = true;
                            target[symbolEventName] = null;
                            // in the target, we have an event listener which is added by on_property
                            // such as target.onclick = function() {}, so we need to clear this internal
                            // property too if all delegates all removed
                            if (typeof eventName === 'string') {
                                const onPropertySymbol = ZONE_SYMBOL_PREFIX + 'ON_PROPERTY' + eventName;
                                target[onPropertySymbol] = null;
                            }
                        }
                        existingTask.zone.cancelTask(existingTask);
                        if (returnTarget) {
                            return target;
                        }
                        return;
                    }
                }
            }
            // issue 930, didn't find the event name or callback
            // from zone kept existingTasks, the callback maybe
            // added outside of zone, we need to call native removeEventListener
            // to try to remove it.
            return nativeRemoveEventListener.apply(this, arguments);
        };
        proto[LISTENERS_EVENT_LISTENER] = function () {
            const target = this || _global;
            let eventName = arguments[0];
            if (patchOptions && patchOptions.transferEventName) {
                eventName = patchOptions.transferEventName(eventName);
            }
            const listeners = [];
            const tasks = findEventTasks(target, eventNameToString ? eventNameToString(eventName) : eventName);
            for (let i = 0; i < tasks.length; i++) {
                const task = tasks[i];
                let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
                listeners.push(delegate);
            }
            return listeners;
        };
        proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER] = function () {
            const target = this || _global;
            let eventName = arguments[0];
            if (!eventName) {
                const keys = Object.keys(target);
                for (let i = 0; i < keys.length; i++) {
                    const prop = keys[i];
                    const match = EVENT_NAME_SYMBOL_REGX.exec(prop);
                    let evtName = match && match[1];
                    // in nodejs EventEmitter, removeListener event is
                    // used for monitoring the removeListener call,
                    // so just keep removeListener eventListener until
                    // all other eventListeners are removed
                    if (evtName && evtName !== 'removeListener') {
                        this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, evtName);
                    }
                }
                // remove removeListener listener finally
                this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, 'removeListener');
            }
            else {
                if (patchOptions && patchOptions.transferEventName) {
                    eventName = patchOptions.transferEventName(eventName);
                }
                const symbolEventNames = zoneSymbolEventNames[eventName];
                if (symbolEventNames) {
                    const symbolEventName = symbolEventNames[FALSE_STR];
                    const symbolCaptureEventName = symbolEventNames[TRUE_STR];
                    const tasks = target[symbolEventName];
                    const captureTasks = target[symbolCaptureEventName];
                    if (tasks) {
                        const removeTasks = tasks.slice();
                        for (let i = 0; i < removeTasks.length; i++) {
                            const task = removeTasks[i];
                            let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
                            this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);
                        }
                    }
                    if (captureTasks) {
                        const removeTasks = captureTasks.slice();
                        for (let i = 0; i < removeTasks.length; i++) {
                            const task = removeTasks[i];
                            let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
                            this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);
                        }
                    }
                }
            }
            if (returnTarget) {
                return this;
            }
        };
        // for native toString patch
        attachOriginToPatched(proto[ADD_EVENT_LISTENER], nativeAddEventListener);
        attachOriginToPatched(proto[REMOVE_EVENT_LISTENER], nativeRemoveEventListener);
        if (nativeRemoveAllListeners) {
            attachOriginToPatched(proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER], nativeRemoveAllListeners);
        }
        if (nativeListeners) {
            attachOriginToPatched(proto[LISTENERS_EVENT_LISTENER], nativeListeners);
        }
        return true;
    }
    let results = [];
    for (let i = 0; i < apis.length; i++) {
        results[i] = patchEventTargetMethods(apis[i], patchOptions);
    }
    return results;
}
function findEventTasks(target, eventName) {
    if (!eventName) {
        const foundTasks = [];
        for (let prop in target) {
            const match = EVENT_NAME_SYMBOL_REGX.exec(prop);
            let evtName = match && match[1];
            if (evtName && (!eventName || evtName === eventName)) {
                const tasks = target[prop];
                if (tasks) {
                    for (let i = 0; i < tasks.length; i++) {
                        foundTasks.push(tasks[i]);
                    }
                }
            }
        }
        return foundTasks;
    }
    let symbolEventName = zoneSymbolEventNames[eventName];
    if (!symbolEventName) {
        prepareEventNames(eventName);
        symbolEventName = zoneSymbolEventNames[eventName];
    }
    const captureFalseTasks = target[symbolEventName[FALSE_STR]];
    const captureTrueTasks = target[symbolEventName[TRUE_STR]];
    if (!captureFalseTasks) {
        return captureTrueTasks ? captureTrueTasks.slice() : [];
    }
    else {
        return captureTrueTasks ? captureFalseTasks.concat(captureTrueTasks) :
            captureFalseTasks.slice();
    }
}

/**
 * @license
 * Copyright Google LLC 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('EventEmitter', (global, Zone, api) => {
    // For EventEmitter
    const EE_ADD_LISTENER = 'addListener';
    const EE_PREPEND_LISTENER = 'prependListener';
    const EE_REMOVE_LISTENER = 'removeListener';
    const EE_REMOVE_ALL_LISTENER = 'removeAllListeners';
    const EE_LISTENERS = 'listeners';
    const EE_ON = 'on';
    const EE_OFF = 'off';
    const compareTaskCallbackVsDelegate = function (task, delegate) {
        // same callback, same capture, same event name, just return
        return task.callback === delegate || task.callback.listener === delegate;
    };
    const eventNameToString = function (eventName) {
        if (typeof eventName === 'string') {
            return eventName;
        }
        if (!eventName) {
            return '';
        }
        return eventName.toString().replace('(', '_').replace(')', '_');
    };
    function patchEventEmitterMethods(obj) {
        const result = patchEventTarget(global, api, [obj], {
            useG: false,
            add: EE_ADD_LISTENER,
            rm: EE_REMOVE_LISTENER,
            prepend: EE_PREPEND_LISTENER,
            rmAll: EE_REMOVE_ALL_LISTENER,
            listeners: EE_LISTENERS,
            chkDup: false,
            rt: true,
            diff: compareTaskCallbackVsDelegate,
            eventNameToString: eventNameToString
        });
        if (result && result[0]) {
            obj[EE_ON] = obj[EE_ADD_LISTENER];
            obj[EE_OFF] = obj[EE_REMOVE_LISTENER];
        }
    }
    // EventEmitter
    let events;
    try {
        events = require('events');
    }
    catch (err) {
    }
    if (events && events.EventEmitter) {
        patchEventEmitterMethods(events.EventEmitter.prototype);
    }
});

/**
 * @license
 * Copyright Google LLC 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('fs', () => {
    let fs;
    try {
        fs = require('fs');
    }
    catch (err) {
    }
    // watch, watchFile, unwatchFile has been patched
    // because EventEmitter has been patched
    const TO_PATCH_MACROTASK_METHODS = [
        'access', 'appendFile', 'chmod', 'chown', 'close', 'exists', 'fchmod',
        'fchown', 'fdatasync', 'fstat', 'fsync', 'ftruncate', 'futimes', 'lchmod',
        'lchown', 'link', 'lstat', 'mkdir', 'mkdtemp', 'open', 'read',
        'readdir', 'readFile', 'readlink', 'realpath', 'rename', 'rmdir', 'stat',
        'symlink', 'truncate', 'unlink', 'utimes', 'write', 'writeFile',
    ];
    if (fs) {
        TO_PATCH_MACROTASK_METHODS.filter(name => !!fs[name] && typeof fs[name] === 'function')
            .forEach(name => {
            patchMacroTask(fs, name, (self, args) => {
                return {
                    name: 'fs.' + name,
                    args: args,
                    cbIdx: args.length > 0 ? args.length - 1 : -1,
                    target: self
                };
            });
        });
    }
});

/**
 * @license
 * Copyright Google LLC 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
 */
const taskSymbol = zoneSymbol('zoneTask');
function patchTimer(window, setName, cancelName, nameSuffix) {
    let setNative = null;
    let clearNative = null;
    setName += nameSuffix;
    cancelName += nameSuffix;
    const tasksByHandleId = {};
    function scheduleTask(task) {
        const data = task.data;
        data.args[0] = function () {
            return task.invoke.apply(this, arguments);
        };
        data.handleId = setNative.apply(window, data.args);
        return task;
    }
    function clearTask(task) {
        return clearNative.call(window, task.data.handleId);
    }
    setNative =
        patchMethod(window, setName, (delegate) => function (self, args) {
            if (typeof args[0] === 'function') {
                const options = {
                    isPeriodic: nameSuffix === 'Interval',
                    delay: (nameSuffix === 'Timeout' || nameSuffix === 'Interval') ? args[1] || 0 :
                        undefined,
                    args: args
                };
                const callback = args[0];
                args[0] = function timer() {
                    try {
                        return callback.apply(this, arguments);
                    }
                    finally {
                        // issue-934, task will be cancelled
                        // even it is a periodic task such as
                        // setInterval
                        // https://github.com/angular/angular/issues/40387
                        // Cleanup tasksByHandleId should be handled before scheduleTask
                        // Since some zoneSpec may intercept and doesn't trigger
                        // scheduleFn(scheduleTask) provided here.
                        if (!(options.isPeriodic)) {
                            if (typeof options.handleId === 'number') {
                                // in non-nodejs env, we remove timerId
                                // from local cache
                                delete tasksByHandleId[options.handleId];
                            }
                            else if (options.handleId) {
                                // Node returns complex objects as handleIds
                                // we remove task reference from timer object
                                options.handleId[taskSymbol] = null;
                            }
                        }
                    }
                };
                const task = scheduleMacroTaskWithCurrentZone(setName, args[0], options, scheduleTask, clearTask);
                if (!task) {
                    return task;
                }
                // Node.js must additionally support the ref and unref functions.
                const handle = task.data.handleId;
                if (typeof handle === 'number') {
                    // for non nodejs env, we save handleId: task
                    // mapping in local cache for clearTimeout
                    tasksByHandleId[handle] = task;
                }
                else if (handle) {
                    // for nodejs env, we save task
                    // reference in timerId Object for clearTimeout
                    handle[taskSymbol] = task;
                }
                // check whether handle is null, because some polyfill or browser
                // may return undefined from setTimeout/setInterval/setImmediate/requestAnimationFrame
                if (handle && handle.ref && handle.unref && typeof handle.ref === 'function' &&
                    typeof handle.unref === 'function') {
                    task.ref = handle.ref.bind(handle);
                    task.unref = handle.unref.bind(handle);
                }
                if (typeof handle === 'number' || handle) {
                    return handle;
                }
                return task;
            }
            else {
                // cause an error by calling it directly.
                return delegate.apply(window, args);
            }
        });
    clearNative =
        patchMethod(window, cancelName, (delegate) => function (self, args) {
            const id = args[0];
            let task;
            if (typeof id === 'number') {
                // non nodejs env.
                task = tasksByHandleId[id];
            }
            else {
                // nodejs env.
                task = id && id[taskSymbol];
                // other environments.
                if (!task) {
                    task = id;
                }
            }
            if (task && typeof task.type === 'string') {
                if (task.state !== 'notScheduled' &&
                    (task.cancelFn && task.data.isPeriodic || task.runCount === 0)) {
                    if (typeof id === 'number') {
                        delete tasksByHandleId[id];
                    }
                    else if (id) {
                        id[taskSymbol] = null;
                    }
                    // Do not cancel already canceled functions
                    task.zone.cancelTask(task);
                }
            }
            else {
                // cause an error by calling it directly.
                delegate.apply(window, args);
            }
        });
}

/**
 * @license
 * Copyright Google LLC 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
 */
const set = 'set';
const clear = 'clear';
Zone.__load_patch('node_timers', (global, Zone) => {
    // Timers
    let globalUseTimeoutFromTimer = false;
    try {
        const timers = require('timers');
        let globalEqualTimersTimeout = global.setTimeout === timers.setTimeout;
        if (!globalEqualTimersTimeout && !isMix) {
            // 1. if isMix, then we are in mix environment such as Electron
            // we should only patch timers.setTimeout because global.setTimeout
            // have been patched
            // 2. if global.setTimeout not equal timers.setTimeout, check
            // whether global.setTimeout use timers.setTimeout or not
            const originSetTimeout = timers.setTimeout;
            timers.setTimeout = function () {
                globalUseTimeoutFromTimer = true;
                return originSetTimeout.apply(this, arguments);
            };
            const detectTimeout = global.setTimeout(() => { }, 100);
            clearTimeout(detectTimeout);
            timers.setTimeout = originSetTimeout;
        }
        patchTimer(timers, set, clear, 'Timeout');
        patchTimer(timers, set, clear, 'Interval');
        patchTimer(timers, set, clear, 'Immediate');
    }
    catch (error) {
        // timers module not exists, for example, when we using nativeScript
        // timers is not available
    }
    if (isMix) {
        // if we are in mix environment, such as Electron,
        // the global.setTimeout has already been patched,
        // so we just patch timers.setTimeout
        return;
    }
    if (!globalUseTimeoutFromTimer) {
        // 1. global setTimeout equals timers setTimeout
        // 2. or global don't use timers setTimeout(maybe some other library patch setTimeout)
        // 3. or load timers module error happens, we should patch global setTimeout
        patchTimer(global, set, clear, 'Timeout');
        patchTimer(global, set, clear, 'Interval');
        patchTimer(global, set, clear, 'Immediate');
    }
    else {
        // global use timers setTimeout, but not equals
        // this happens when use nodejs v0.10.x, global setTimeout will
        // use a lazy load version of timers setTimeout
        // we should not double patch timer's setTimeout
        // so we only store the __symbol__ for consistency
        global[Zone.__symbol__('setTimeout')] = global.setTimeout;
        global[Zone.__symbol__('setInterval')] = global.setInterval;
        global[Zone.__symbol__('setImmediate')] = global.setImmediate;
    }
});
// patch process related methods
Zone.__load_patch('nextTick', () => {
    // patch nextTick as microTask
    patchMicroTask(process, 'nextTick', (self, args) => {
        return {
            name: 'process.nextTick',
            args: args,
            cbIdx: (args.length > 0 && typeof args[0] === 'function') ? 0 : -1,
            target: process
        };
    });
});
Zone.__load_patch('handleUnhandledPromiseRejection', (global, Zone, api) => {
    Zone[api.symbol('unhandledPromiseRejectionHandler')] =
        findProcessPromiseRejectionHandler('unhandledRejection');
    Zone[api.symbol('rejectionHandledHandler')] =
        findProcessPromiseRejectionHandler('rejectionHandled');
    // handle unhandled promise rejection
    function findProcessPromiseRejectionHandler(evtName) {
        return function (e) {
            const eventTasks = findEventTasks(process, evtName);
            eventTasks.forEach(eventTask => {
                // process has added unhandledrejection event listener
                // trigger the event listener
                if (evtName === 'unhandledRejection') {
                    eventTask.invoke(e.rejection, e.promise);
                }
                else if (evtName === 'rejectionHandled') {
                    eventTask.invoke(e.promise);
                }
            });
        };
    }
});
// Crypto
Zone.__load_patch('crypto', () => {
    let crypto;
    try {
        crypto = require('crypto');
    }
    catch (err) {
    }
    // use the generic patchMacroTask to patch crypto
    if (crypto) {
        const methodNames = ['randomBytes', 'pbkdf2'];
        methodNames.forEach(name => {
            patchMacroTask(crypto, name, (self, args) => {
                return {
                    name: 'crypto.' + name,
                    args: args,
                    cbIdx: (args.length > 0 && typeof args[args.length - 1] === 'function') ?
                        args.length - 1 :
                        -1,
                    target: crypto
                };
            });
        });
    }
});
Zone.__load_patch('console', (global, Zone) => {
    const consoleMethods = ['dir', 'log', 'info', 'error', 'warn', 'assert', 'debug', 'timeEnd', 'trace'];
    consoleMethods.forEach((m) => {
        const originalMethod = console[Zone.__symbol__(m)] = console[m];
        if (originalMethod) {
            console[m] = function () {
                const args = ArraySlice.call(arguments);
                if (Zone.current === Zone.root) {
                    return originalMethod.apply(this, args);
                }
                else {
                    return Zone.root.run(originalMethod, this, args);
                }
            };
        }
    });
});

/**
 * @license
 * Copyright Google LLC 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
 */
/**
 * @fileoverview
 * @suppress {globalThis}
 */
const NEWLINE = '\n';
const IGNORE_FRAMES = {};
const creationTrace = '__creationTrace__';
const ERROR_TAG = 'STACKTRACE TRACKING';
const SEP_TAG = '__SEP_TAG__';
let sepTemplate = SEP_TAG + '@[native]';
class LongStackTrace {
    constructor() {
        this.error = getStacktrace();
        this.timestamp = new Date();
    }
}
function getStacktraceWithUncaughtError() {
    return new Error(ERROR_TAG);
}
function getStacktraceWithCaughtError() {
    try {
        throw getStacktraceWithUncaughtError();
    }
    catch (err) {
        return err;
    }
}
// Some implementations of exception handling don't create a stack trace if the exception
// isn't thrown, however it's faster not to actually throw the exception.
const error = getStacktraceWithUncaughtError();
const caughtError = getStacktraceWithCaughtError();
const getStacktrace = error.stack ?
    getStacktraceWithUncaughtError :
    (caughtError.stack ? getStacktraceWithCaughtError : getStacktraceWithUncaughtError);
function getFrames(error) {
    return error.stack ? error.stack.split(NEWLINE) : [];
}
function addErrorStack(lines, error) {
    let trace = getFrames(error);
    for (let i = 0; i < trace.length; i++) {
        const frame = trace[i];
        // Filter out the Frames which are part of stack capturing.
        if (!IGNORE_FRAMES.hasOwnProperty(frame)) {
            lines.push(trace[i]);
        }
    }
}
function renderLongStackTrace(frames, stack) {
    const longTrace = [stack ? stack.trim() : ''];
    if (frames) {
        let timestamp = new Date().getTime();
        for (let i = 0; i < frames.length; i++) {
            const traceFrames = frames[i];
            const lastTime = traceFrames.timestamp;
            let separator = `____________________Elapsed ${timestamp - lastTime.getTime()} ms; At: ${lastTime}`;
            separator = separator.replace(/[^\w\d]/g, '_');
            longTrace.push(sepTemplate.replace(SEP_TAG, separator));
            addErrorStack(longTrace, traceFrames.error);
            timestamp = lastTime.getTime();
        }
    }
    return longTrace.join(NEWLINE);
}
// if Error.stackTraceLimit is 0, means stack trace
// is disabled, so we don't need to generate long stack trace
// this will improve performance in some test(some test will
// set stackTraceLimit to 0, https://github.com/angular/zone.js/issues/698
function stackTracesEnabled() {
    // Cast through any since this property only exists on Error in the nodejs
    // typings.
    return Error.stackTraceLimit > 0;
}
Zone['longStackTraceZoneSpec'] = {
    name: 'long-stack-trace',
    longStackTraceLimit: 10,
    // add a getLongStackTrace method in spec to
    // handle handled reject promise error.
    getLongStackTrace: function (error) {
        if (!error) {
            return undefined;
        }
        const trace = error[Zone.__symbol__('currentTaskTrace')];
        if (!trace) {
            return error.stack;
        }
        return renderLongStackTrace(trace, error.stack);
    },
    onScheduleTask: function (parentZoneDelegate, currentZone, targetZone, task) {
        if (stackTracesEnabled()) {
            const currentTask = Zone.currentTask;
            let trace = currentTask && currentTask.data && currentTask.data[creationTrace] || [];
            trace = [new LongStackTrace()].concat(trace);
            if (trace.length > this.longStackTraceLimit) {
                trace.length = this.longStackTraceLimit;
            }
            if (!task.data)
                task.data = {};
            if (task.type === 'eventTask') {
                // Fix issue https://github.com/angular/zone.js/issues/1195,
                // For event task of browser, by default, all task will share a
                // singleton instance of data object, we should create a new one here
                // The cast to `any` is required to workaround a closure bug which wrongly applies
                // URL sanitization rules to .data access.
                task.data = Object.assign({}, task.data);
            }
            task.data[creationTrace] = trace;
        }
        return parentZoneDelegate.scheduleTask(targetZone, task);
    },
    onHandleError: function (parentZoneDelegate, currentZone, targetZone, error) {
        if (stackTracesEnabled()) {
            const parentTask = Zone.currentTask || error.task;
            if (error instanceof Error && parentTask) {
                const longStack = renderLongStackTrace(parentTask.data && parentTask.data[creationTrace], error.stack);
                try {
                    error.stack = error.longStack = longStack;
                }
                catch (err) {
                }
            }
        }
        return parentZoneDelegate.handleError(targetZone, error);
    }
};
function captureStackTraces(stackTraces, count) {
    if (count > 0) {
        stackTraces.push(getFrames((new LongStackTrace()).error));
        captureStackTraces(stackTraces, count - 1);
    }
}
function computeIgnoreFrames() {
    if (!stackTracesEnabled()) {
        return;
    }
    const frames = [];
    captureStackTraces(frames, 2);
    const frames1 = frames[0];
    const frames2 = frames[1];
    for (let i = 0; i < frames1.length; i++) {
        const frame1 = frames1[i];
        if (frame1.indexOf(ERROR_TAG) == -1) {
            let match = frame1.match(/^\s*at\s+/);
            if (match) {
                sepTemplate = match[0] + SEP_TAG + ' (http://localhost)';
                break;
            }
        }
    }
    for (let i = 0; i < frames1.length; i++) {
        const frame1 = frames1[i];
        const frame2 = frames2[i];
        if (frame1 === frame2) {
            IGNORE_FRAMES[frame1] = true;
        }
        else {
            break;
        }
    }
}
computeIgnoreFrames();

/**
 * @license
 * Copyright Google LLC 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
 */
class ProxyZoneSpec {
    constructor(defaultSpecDelegate = null) {
        this.defaultSpecDelegate = defaultSpecDelegate;
        this.name = 'ProxyZone';
        this._delegateSpec = null;
        this.properties = { 'ProxyZoneSpec': this };
        this.propertyKeys = null;
        this.lastTaskState = null;
        this.isNeedToTriggerHasTask = false;
        this.tasks = [];
        this.setDelegate(defaultSpecDelegate);
    }
    static get() {
        return Zone.current.get('ProxyZoneSpec');
    }
    static isLoaded() {
        return ProxyZoneSpec.get() instanceof ProxyZoneSpec;
    }
    static assertPresent() {
        if (!ProxyZoneSpec.isLoaded()) {
            throw new Error(`Expected to be running in 'ProxyZone', but it was not found.`);
        }
        return ProxyZoneSpec.get();
    }
    setDelegate(delegateSpec) {
        const isNewDelegate = this._delegateSpec !== delegateSpec;
        this._delegateSpec = delegateSpec;
        this.propertyKeys && this.propertyKeys.forEach((key) => delete this.properties[key]);
        this.propertyKeys = null;
        if (delegateSpec && delegateSpec.properties) {
            this.propertyKeys = Object.keys(delegateSpec.properties);
            this.propertyKeys.forEach((k) => this.properties[k] = delegateSpec.properties[k]);
        }
        // if a new delegateSpec was set, check if we need to trigger hasTask
        if (isNewDelegate && this.lastTaskState &&
            (this.lastTaskState.macroTask || this.lastTaskState.microTask)) {
            this.isNeedToTriggerHasTask = true;
        }
    }
    getDelegate() {
        return this._delegateSpec;
    }
    resetDelegate() {
        this.getDelegate();
        this.setDelegate(this.defaultSpecDelegate);
    }
    tryTriggerHasTask(parentZoneDelegate, currentZone, targetZone) {
        if (this.isNeedToTriggerHasTask && this.lastTaskState) {
            // last delegateSpec has microTask or macroTask
            // should call onHasTask in current delegateSpec
            this.isNeedToTriggerHasTask = false;
            this.onHasTask(parentZoneDelegate, currentZone, targetZone, this.lastTaskState);
        }
    }
    removeFromTasks(task) {
        if (!this.tasks) {
            return;
        }
        for (let i = 0; i < this.tasks.length; i++) {
            if (this.tasks[i] === task) {
                this.tasks.splice(i, 1);
                return;
            }
        }
    }
    getAndClearPendingTasksInfo() {
        if (this.tasks.length === 0) {
            return '';
        }
        const taskInfo = this.tasks.map((task) => {
            const dataInfo = task.data &&
                Object.keys(task.data)
                    .map((key) => {
                    return key + ':' + task.data[key];
                })
                    .join(',');
            return `type: ${task.type}, source: ${task.source}, args: {${dataInfo}}`;
        });
        const pendingTasksInfo = '--Pending async tasks are: [' + taskInfo + ']';
        // clear tasks
        this.tasks = [];
        return pendingTasksInfo;
    }
    onFork(parentZoneDelegate, currentZone, targetZone, zoneSpec) {
        if (this._delegateSpec && this._delegateSpec.onFork) {
            return this._delegateSpec.onFork(parentZoneDelegate, currentZone, targetZone, zoneSpec);
        }
        else {
            return parentZoneDelegate.fork(targetZone, zoneSpec);
        }
    }
    onIntercept(parentZoneDelegate, currentZone, targetZone, delegate, source) {
        if (this._delegateSpec && this._delegateSpec.onIntercept) {
            return this._delegateSpec.onIntercept(parentZoneDelegate, currentZone, targetZone, delegate, source);
        }
        else {
            return parentZoneDelegate.intercept(targetZone, delegate, source);
        }
    }
    onInvoke(parentZoneDelegate, currentZone, targetZone, delegate, applyThis, applyArgs, source) {
        this.tryTriggerHasTask(parentZoneDelegate, currentZone, targetZone);
        if (this._delegateSpec && this._delegateSpec.onInvoke) {
            return this._delegateSpec.onInvoke(parentZoneDelegate, currentZone, targetZone, delegate, applyThis, applyArgs, source);
        }
        else {
            return parentZoneDelegate.invoke(targetZone, delegate, applyThis, applyArgs, source);
        }
    }
    onHandleError(parentZoneDelegate, currentZone, targetZone, error) {
        if (this._delegateSpec && this._delegateSpec.onHandleError) {
            return this._delegateSpec.onHandleError(parentZoneDelegate, currentZone, targetZone, error);
        }
        else {
            return parentZoneDelegate.handleError(targetZone, error);
        }
    }
    onScheduleTask(parentZoneDelegate, currentZone, targetZone, task) {
        if (task.type !== 'eventTask') {
            this.tasks.push(task);
        }
        if (this._delegateSpec && this._delegateSpec.onScheduleTask) {
            return this._delegateSpec.onScheduleTask(parentZoneDelegate, currentZone, targetZone, task);
        }
        else {
            return parentZoneDelegate.scheduleTask(targetZone, task);
        }
    }
    onInvokeTask(parentZoneDelegate, currentZone, targetZone, task, applyThis, applyArgs) {
        if (task.type !== 'eventTask') {
            this.removeFromTasks(task);
        }
        this.tryTriggerHasTask(parentZoneDelegate, currentZone, targetZone);
        if (this._delegateSpec && this._delegateSpec.onInvokeTask) {
            return this._delegateSpec.onInvokeTask(parentZoneDelegate, currentZone, targetZone, task, applyThis, applyArgs);
        }
        else {
            return parentZoneDelegate.invokeTask(targetZone, task, applyThis, applyArgs);
        }
    }
    onCancelTask(parentZoneDelegate, currentZone, targetZone, task) {
        if (task.type !== 'eventTask') {
            this.removeFromTasks(task);
        }
        this.tryTriggerHasTask(parentZoneDelegate, currentZone, targetZone);
        if (this._delegateSpec && this._delegateSpec.onCancelTask) {
            return this._delegateSpec.onCancelTask(parentZoneDelegate, currentZone, targetZone, task);
        }
        else {
            return parentZoneDelegate.cancelTask(targetZone, task);
        }
    }
    onHasTask(delegate, current, target, hasTaskState) {
        this.lastTaskState = hasTaskState;
        if (this._delegateSpec && this._delegateSpec.onHasTask) {
            this._delegateSpec.onHasTask(delegate, current, target, hasTaskState);
        }
        else {
            delegate.hasTask(target, hasTaskState);
        }
    }
}
// Export the class so that new instances can be created with proper
// constructor params.
Zone['ProxyZoneSpec'] = ProxyZoneSpec;

/**
 * @license
 * Copyright Google LLC 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
 */
class SyncTestZoneSpec {
    constructor(namePrefix) {
        this.runZone = Zone.current;
        this.name = 'syncTestZone for ' + namePrefix;
    }
    onScheduleTask(delegate, current, target, task) {
        switch (task.type) {
            case 'microTask':
            case 'macroTask':
                throw new Error(`Cannot call ${task.source} from within a sync test (${this.name}).`);
            case 'eventTask':
                task = delegate.scheduleTask(target, task);
                break;
        }
        return task;
    }
}
// Export the class so that new instances can be created with proper
// constructor params.
Zone['SyncTestZoneSpec'] = SyncTestZoneSpec;

/**
 * @license
 * Copyright Google LLC 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('jasmine', (global, Zone, api) => {
    const __extends = function (d, b) {
        for (const p in b)
            if (b.hasOwnProperty(p))
                d[p] = b[p];
        function __() {
            this.constructor = d;
        }
        d.prototype = b === null ? Object.create(b) : ((__.prototype = b.prototype), new __());
    };
    // Patch jasmine's describe/it/beforeEach/afterEach functions so test code always runs
    // in a testZone (ProxyZone). (See: angular/zone.js#91 & angular/angular#10503)
    if (!Zone)
        throw new Error('Missing: zone.js');
    if (typeof jest !== 'undefined') {
        // return if jasmine is a light implementation inside jest
        // in this case, we are running inside jest not jasmine
        return;
    }
    if (typeof jasmine == 'undefined' || jasmine['__zone_patch__']) {
        return;
    }
    jasmine['__zone_patch__'] = true;
    const SyncTestZoneSpec = Zone['SyncTestZoneSpec'];
    const ProxyZoneSpec = Zone['ProxyZoneSpec'];
    if (!SyncTestZoneSpec)
        throw new Error('Missing: SyncTestZoneSpec');
    if (!ProxyZoneSpec)
        throw new Error('Missing: ProxyZoneSpec');
    const ambientZone = Zone.current;
    const symbol = Zone.__symbol__;
    // whether patch jasmine clock when in fakeAsync
    const disablePatchingJasmineClock = global[symbol('fakeAsyncDisablePatchingClock')] === true;
    // the original variable name fakeAsyncPatchLock is not accurate, so the name will be
    // fakeAsyncAutoFakeAsyncWhenClockPatched and if this enablePatchingJasmineClock is false, we also
    // automatically disable the auto jump into fakeAsync feature
    const enableAutoFakeAsyncWhenClockPatched = !disablePatchingJasmineClock &&
        ((global[symbol('fakeAsyncPatchLock')] === true) ||
            (global[symbol('fakeAsyncAutoFakeAsyncWhenClockPatched')] === true));
    const ignoreUnhandledRejection = global[symbol('ignoreUnhandledRejection')] === true;
    if (!ignoreUnhandledRejection) {
        const globalErrors = jasmine.GlobalErrors;
        if (globalErrors && !jasmine[symbol('GlobalErrors')]) {
            jasmine[symbol('GlobalErrors')] = globalErrors;
            jasmine.GlobalErrors = function () {
                const instance = new globalErrors();
                const originalInstall = instance.install;
                if (originalInstall && !instance[symbol('install')]) {
                    instance[symbol('install')] = originalInstall;
                    instance.install = function () {
                        const isNode = typeof process !== 'undefined' && !!process.on;
                        // Note: Jasmine checks internally if `process` and `process.on` is defined. Otherwise,
                        // it installs the browser rejection handler through the `global.addEventListener`.
                        // This code may be run in the browser environment where `process` is not defined, and
                        // this will lead to a runtime exception since Webpack 5 removed automatic Node.js
                        // polyfills. Note, that events are named differently, it's `unhandledRejection` in
                        // Node.js and `unhandledrejection` in the browser.
                        const originalHandlers = isNode ? process.listeners('unhandledRejection') :
                            global.eventListeners('unhandledrejection');
                        const result = originalInstall.apply(this, arguments);
                        isNode ? process.removeAllListeners('unhandledRejection') :
                            global.removeAllListeners('unhandledrejection');
                        if (originalHandlers) {
                            originalHandlers.forEach(handler => {
                                if (isNode) {
                                    process.on('unhandledRejection', handler);
                                }
                                else {
                                    global.addEventListener('unhandledrejection', handler);
                                }
                            });
                        }
                        return result;
                    };
                }
                return instance;
            };
        }
    }
    // Monkey patch all of the jasmine DSL so that each function runs in appropriate zone.
    const jasmineEnv = jasmine.getEnv();
    ['describe', 'xdescribe', 'fdescribe'].forEach(methodName => {
        let originalJasmineFn = jasmineEnv[methodName];
        jasmineEnv[methodName] = function (description, specDefinitions) {
            return originalJasmineFn.call(this, description, wrapDescribeInZone(description, specDefinitions));
        };
    });
    ['it', 'xit', 'fit'].forEach(methodName => {
        let originalJasmineFn = jasmineEnv[methodName];
        jasmineEnv[symbol(methodName)] = originalJasmineFn;
        jasmineEnv[methodName] = function (description, specDefinitions, timeout) {
            arguments[1] = wrapTestInZone(specDefinitions);
            return originalJasmineFn.apply(this, arguments);
        };
    });
    ['beforeEach', 'afterEach', 'beforeAll', 'afterAll'].forEach(methodName => {
        let originalJasmineFn = jasmineEnv[methodName];
        jasmineEnv[symbol(methodName)] = originalJasmineFn;
        jasmineEnv[methodName] = function (specDefinitions, timeout) {
            arguments[0] = wrapTestInZone(specDefinitions);
            return originalJasmineFn.apply(this, arguments);
        };
    });
    if (!disablePatchingJasmineClock) {
        // need to patch jasmine.clock().mockDate and jasmine.clock().tick() so
        // they can work properly in FakeAsyncTest
        const originalClockFn = (jasmine[symbol('clock')] = jasmine['clock']);
        jasmine['clock'] = function () {
            const clock = originalClockFn.apply(this, arguments);
            if (!clock[symbol('patched')]) {
                clock[symbol('patched')] = symbol('patched');
                const originalTick = (clock[symbol('tick')] = clock.tick);
                clock.tick = function () {
                    const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                    if (fakeAsyncZoneSpec) {
                        return fakeAsyncZoneSpec.tick.apply(fakeAsyncZoneSpec, arguments);
                    }
                    return originalTick.apply(this, arguments);
                };
                const originalMockDate = (clock[symbol('mockDate')] = clock.mockDate);
                clock.mockDate = function () {
                    const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                    if (fakeAsyncZoneSpec) {
                        const dateTime = arguments.length > 0 ? arguments[0] : new Date();
                        return fakeAsyncZoneSpec.setFakeBaseSystemTime.apply(fakeAsyncZoneSpec, dateTime && typeof dateTime.getTime === 'function' ? [dateTime.getTime()] :
                            arguments);
                    }
                    return originalMockDate.apply(this, arguments);
                };
                // for auto go into fakeAsync feature, we need the flag to enable it
                if (enableAutoFakeAsyncWhenClockPatched) {
                    ['install', 'uninstall'].forEach(methodName => {
                        const originalClockFn = (clock[symbol(methodName)] = clock[methodName]);
                        clock[methodName] = function () {
                            const FakeAsyncTestZoneSpec = Zone['FakeAsyncTestZoneSpec'];
                            if (FakeAsyncTestZoneSpec) {
                                jasmine[symbol('clockInstalled')] = 'install' === methodName;
                                return;
                            }
                            return originalClockFn.apply(this, arguments);
                        };
                    });
                }
            }
            return clock;
        };
    }
    // monkey patch createSpyObj to make properties enumerable to true
    if (!jasmine[Zone.__symbol__('createSpyObj')]) {
        const originalCreateSpyObj = jasmine.createSpyObj;
        jasmine[Zone.__symbol__('createSpyObj')] = originalCreateSpyObj;
        jasmine.createSpyObj = function () {
            const args = Array.prototype.slice.call(arguments);
            const propertyNames = args.length >= 3 ? args[2] : null;
            let spyObj;
            if (propertyNames) {
                const defineProperty = Object.defineProperty;
                Object.defineProperty = function (obj, p, attributes) {
                    return defineProperty.call(this, obj, p, Object.assign(Object.assign({}, attributes), { configurable: true, enumerable: true }));
                };
                try {
                    spyObj = originalCreateSpyObj.apply(this, args);
                }
                finally {
                    Object.defineProperty = defineProperty;
                }
            }
            else {
                spyObj = originalCreateSpyObj.apply(this, args);
            }
            return spyObj;
        };
    }
    /**
     * Gets a function wrapping the body of a Jasmine `describe` block to execute in a
     * synchronous-only zone.
     */
    function wrapDescribeInZone(description, describeBody) {
        return function () {
            // Create a synchronous-only zone in which to run `describe` blocks in order to raise an
            // error if any asynchronous operations are attempted inside of a `describe`.
            const syncZone = ambientZone.fork(new SyncTestZoneSpec(`jasmine.describe#${description}`));
            return syncZone.run(describeBody, this, arguments);
        };
    }
    function runInTestZone(testBody, applyThis, queueRunner, done) {
        const isClockInstalled = !!jasmine[symbol('clockInstalled')];
        queueRunner.testProxyZoneSpec;
        const testProxyZone = queueRunner.testProxyZone;
        if (isClockInstalled && enableAutoFakeAsyncWhenClockPatched) {
            // auto run a fakeAsync
            const fakeAsyncModule = Zone[Zone.__symbol__('fakeAsyncTest')];
            if (fakeAsyncModule && typeof fakeAsyncModule.fakeAsync === 'function') {
                testBody = fakeAsyncModule.fakeAsync(testBody);
            }
        }
        if (done) {
            return testProxyZone.run(testBody, applyThis, [done]);
        }
        else {
            return testProxyZone.run(testBody, applyThis);
        }
    }
    /**
     * Gets a function wrapping the body of a Jasmine `it/beforeEach/afterEach` block to
     * execute in a ProxyZone zone.
     * This will run in `testProxyZone`. The `testProxyZone` will be reset by the `ZoneQueueRunner`
     */
    function wrapTestInZone(testBody) {
        // The `done` callback is only passed through if the function expects at least one argument.
        // Note we have to make a function with correct number of arguments, otherwise jasmine will
        // think that all functions are sync or async.
        return (testBody && (testBody.length ? function (done) {
            return runInTestZone(testBody, this, this.queueRunner, done);
        } : function () {
            return runInTestZone(testBody, this, this.queueRunner);
        }));
    }
    const QueueRunner = jasmine.QueueRunner;
    jasmine.QueueRunner = (function (_super) {
        __extends(ZoneQueueRunner, _super);
        function ZoneQueueRunner(attrs) {
            if (attrs.onComplete) {
                attrs.onComplete = (fn => () => {
                    // All functions are done, clear the test zone.
                    this.testProxyZone = null;
                    this.testProxyZoneSpec = null;
                    ambientZone.scheduleMicroTask('jasmine.onComplete', fn);
                })(attrs.onComplete);
            }
            const nativeSetTimeout = global[Zone.__symbol__('setTimeout')];
            const nativeClearTimeout = global[Zone.__symbol__('clearTimeout')];
            if (nativeSetTimeout) {
                // should run setTimeout inside jasmine outside of zone
                attrs.timeout = {
                    setTimeout: nativeSetTimeout ? nativeSetTimeout : global.setTimeout,
                    clearTimeout: nativeClearTimeout ? nativeClearTimeout : global.clearTimeout
                };
            }
            // create a userContext to hold the queueRunner itself
            // so we can access the testProxy in it/xit/beforeEach ...
            if (jasmine.UserContext) {
                if (!attrs.userContext) {
                    attrs.userContext = new jasmine.UserContext();
                }
                attrs.userContext.queueRunner = this;
            }
            else {
                if (!attrs.userContext) {
                    attrs.userContext = {};
                }
                attrs.userContext.queueRunner = this;
            }
            // patch attrs.onException
            const onException = attrs.onException;
            attrs.onException = function (error) {
                if (error &&
                    error.message ===
                        'Timeout - Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL.') {
                    // jasmine timeout, we can make the error message more
                    // reasonable to tell what tasks are pending
                    const proxyZoneSpec = this && this.testProxyZoneSpec;
                    if (proxyZoneSpec) {
                        const pendingTasksInfo = proxyZoneSpec.getAndClearPendingTasksInfo();
                        try {
                            // try catch here in case error.message is not writable
                            error.message += pendingTasksInfo;
                        }
                        catch (err) {
                        }
                    }
                }
                if (onException) {
                    onException.call(this, error);
                }
            };
            _super.call(this, attrs);
        }
        ZoneQueueRunner.prototype.execute = function () {
            let zone = Zone.current;
            let isChildOfAmbientZone = false;
            while (zone) {
                if (zone === ambientZone) {
                    isChildOfAmbientZone = true;
                    break;
                }
                zone = zone.parent;
            }
            if (!isChildOfAmbientZone)
                throw new Error('Unexpected Zone: ' + Zone.current.name);
            // This is the zone which will be used for running individual tests.
            // It will be a proxy zone, so that the tests function can retroactively install
            // different zones.
            // Example:
            //   - In beforeEach() do childZone = Zone.current.fork(...);
            //   - In it() try to do fakeAsync(). The issue is that because the beforeEach forked the
            //     zone outside of fakeAsync it will be able to escape the fakeAsync rules.
            //   - Because ProxyZone is parent fo `childZone` fakeAsync can retroactively add
            //     fakeAsync behavior to the childZone.
            this.testProxyZoneSpec = new ProxyZoneSpec();
            this.testProxyZone = ambientZone.fork(this.testProxyZoneSpec);
            if (!Zone.currentTask) {
                // if we are not running in a task then if someone would register a
                // element.addEventListener and then calling element.click() the
                // addEventListener callback would think that it is the top most task and would
                // drain the microtask queue on element.click() which would be incorrect.
                // For this reason we always force a task when running jasmine tests.
                Zone.current.scheduleMicroTask('jasmine.execute().forceTask', () => QueueRunner.prototype.execute.call(this));
            }
            else {
                _super.prototype.execute.call(this);
            }
        };
        return ZoneQueueRunner;
    })(QueueRunner);
});

/**
 * @license
 * Copyright Google LLC 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('jest', (context, Zone, api) => {
    if (typeof jest === 'undefined' || jest['__zone_patch__']) {
        return;
    }
    jest['__zone_patch__'] = true;
    const ProxyZoneSpec = Zone['ProxyZoneSpec'];
    const SyncTestZoneSpec = Zone['SyncTestZoneSpec'];
    if (!ProxyZoneSpec) {
        throw new Error('Missing ProxyZoneSpec');
    }
    const rootZone = Zone.current;
    const syncZone = rootZone.fork(new SyncTestZoneSpec('jest.describe'));
    const proxyZoneSpec = new ProxyZoneSpec();
    const proxyZone = rootZone.fork(proxyZoneSpec);
    function wrapDescribeFactoryInZone(originalJestFn) {
        return function (...tableArgs) {
            const originalDescribeFn = originalJestFn.apply(this, tableArgs);
            return function (...args) {
                args[1] = wrapDescribeInZone(args[1]);
                return originalDescribeFn.apply(this, args);
            };
        };
    }
    function wrapTestFactoryInZone(originalJestFn) {
        return function (...tableArgs) {
            return function (...args) {
                args[1] = wrapTestInZone(args[1]);
                return originalJestFn.apply(this, tableArgs).apply(this, args);
            };
        };
    }
    /**
     * Gets a function wrapping the body of a jest `describe` block to execute in a
     * synchronous-only zone.
     */
    function wrapDescribeInZone(describeBody) {
        return function (...args) {
            return syncZone.run(describeBody, this, args);
        };
    }
    /**
     * Gets a function wrapping the body of a jest `it/beforeEach/afterEach` block to
     * execute in a ProxyZone zone.
     * This will run in the `proxyZone`.
     */
    function wrapTestInZone(testBody, isTestFunc = false) {
        if (typeof testBody !== 'function') {
            return testBody;
        }
        const wrappedFunc = function () {
            if (Zone[api.symbol('useFakeTimersCalled')] === true && testBody &&
                !testBody.isFakeAsync) {
                // jest.useFakeTimers is called, run into fakeAsyncTest automatically.
                const fakeAsyncModule = Zone[Zone.__symbol__('fakeAsyncTest')];
                if (fakeAsyncModule && typeof fakeAsyncModule.fakeAsync === 'function') {
                    testBody = fakeAsyncModule.fakeAsync(testBody);
                }
            }
            proxyZoneSpec.isTestFunc = isTestFunc;
            return proxyZone.run(testBody, null, arguments);
        };
        // Update the length of wrappedFunc to be the same as the length of the testBody
        // So jest core can handle whether the test function has `done()` or not correctly
        Object.defineProperty(wrappedFunc, 'length', { configurable: true, writable: true, enumerable: false });
        wrappedFunc.length = testBody.length;
        return wrappedFunc;
    }
    ['describe', 'xdescribe', 'fdescribe'].forEach(methodName => {
        let originalJestFn = context[methodName];
        if (context[Zone.__symbol__(methodName)]) {
            return;
        }
        context[Zone.__symbol__(methodName)] = originalJestFn;
        context[methodName] = function (...args) {
            args[1] = wrapDescribeInZone(args[1]);
            return originalJestFn.apply(this, args);
        };
        context[methodName].each = wrapDescribeFactoryInZone(originalJestFn.each);
    });
    context.describe.only = context.fdescribe;
    context.describe.skip = context.xdescribe;
    ['it', 'xit', 'fit', 'test', 'xtest'].forEach(methodName => {
        let originalJestFn = context[methodName];
        if (context[Zone.__symbol__(methodName)]) {
            return;
        }
        context[Zone.__symbol__(methodName)] = originalJestFn;
        context[methodName] = function (...args) {
            args[1] = wrapTestInZone(args[1], true);
            return originalJestFn.apply(this, args);
        };
        context[methodName].each = wrapTestFactoryInZone(originalJestFn.each);
        context[methodName].todo = originalJestFn.todo;
    });
    context.it.only = context.fit;
    context.it.skip = context.xit;
    context.test.only = context.fit;
    context.test.skip = context.xit;
    ['beforeEach', 'afterEach', 'beforeAll', 'afterAll'].forEach(methodName => {
        let originalJestFn = context[methodName];
        if (context[Zone.__symbol__(methodName)]) {
            return;
        }
        context[Zone.__symbol__(methodName)] = originalJestFn;
        context[methodName] = function (...args) {
            args[0] = wrapTestInZone(args[0]);
            return originalJestFn.apply(this, args);
        };
    });
    Zone.patchJestObject = function patchJestObject(Timer, isModern = false) {
        // check whether currently the test is inside fakeAsync()
        function isPatchingFakeTimer() {
            const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
            return !!fakeAsyncZoneSpec;
        }
        // check whether the current function is inside `test/it` or other methods
        // such as `describe/beforeEach`
        function isInTestFunc() {
            const proxyZoneSpec = Zone.current.get('ProxyZoneSpec');
            return proxyZoneSpec && proxyZoneSpec.isTestFunc;
        }
        if (Timer[api.symbol('fakeTimers')]) {
            return;
        }
        Timer[api.symbol('fakeTimers')] = true;
        // patch jest fakeTimer internal method to make sure no console.warn print out
        api.patchMethod(Timer, '_checkFakeTimers', delegate => {
            return function (self, args) {
                if (isPatchingFakeTimer()) {
                    return true;
                }
                else {
                    return delegate.apply(self, args);
                }
            };
        });
        // patch useFakeTimers(), set useFakeTimersCalled flag, and make test auto run into fakeAsync
        api.patchMethod(Timer, 'useFakeTimers', delegate => {
            return function (self, args) {
                Zone[api.symbol('useFakeTimersCalled')] = true;
                if (isModern || isInTestFunc()) {
                    return delegate.apply(self, args);
                }
                return self;
            };
        });
        // patch useRealTimers(), unset useFakeTimers flag
        api.patchMethod(Timer, 'useRealTimers', delegate => {
            return function (self, args) {
                Zone[api.symbol('useFakeTimersCalled')] = false;
                if (isModern || isInTestFunc()) {
                    return delegate.apply(self, args);
                }
                return self;
            };
        });
        // patch setSystemTime(), call setCurrentRealTime() in the fakeAsyncTest
        api.patchMethod(Timer, 'setSystemTime', delegate => {
            return function (self, args) {
                const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                if (fakeAsyncZoneSpec && isPatchingFakeTimer()) {
                    fakeAsyncZoneSpec.setFakeBaseSystemTime(args[0]);
                }
                else {
                    return delegate.apply(self, args);
                }
            };
        });
        // patch getSystemTime(), call getCurrentRealTime() in the fakeAsyncTest
        api.patchMethod(Timer, 'getRealSystemTime', delegate => {
            return function (self, args) {
                const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                if (fakeAsyncZoneSpec && isPatchingFakeTimer()) {
                    return fakeAsyncZoneSpec.getRealSystemTime();
                }
                else {
                    return delegate.apply(self, args);
                }
            };
        });
        // patch runAllTicks(), run all microTasks inside fakeAsync
        api.patchMethod(Timer, 'runAllTicks', delegate => {
            return function (self, args) {
                const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                if (fakeAsyncZoneSpec) {
                    fakeAsyncZoneSpec.flushMicrotasks();
                }
                else {
                    return delegate.apply(self, args);
                }
            };
        });
        // patch runAllTimers(), run all macroTasks inside fakeAsync
        api.patchMethod(Timer, 'runAllTimers', delegate => {
            return function (self, args) {
                const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                if (fakeAsyncZoneSpec) {
                    fakeAsyncZoneSpec.flush(100, true);
                }
                else {
                    return delegate.apply(self, args);
                }
            };
        });
        // patch advanceTimersByTime(), call tick() in the fakeAsyncTest
        api.patchMethod(Timer, 'advanceTimersByTime', delegate => {
            return function (self, args) {
                const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                if (fakeAsyncZoneSpec) {
                    fakeAsyncZoneSpec.tick(args[0]);
                }
                else {
                    return delegate.apply(self, args);
                }
            };
        });
        // patch runOnlyPendingTimers(), call flushOnlyPendingTimers() in the fakeAsyncTest
        api.patchMethod(Timer, 'runOnlyPendingTimers', delegate => {
            return function (self, args) {
                const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                if (fakeAsyncZoneSpec) {
                    fakeAsyncZoneSpec.flushOnlyPendingTimers();
                }
                else {
                    return delegate.apply(self, args);
                }
            };
        });
        // patch advanceTimersToNextTimer(), call tickToNext() in the fakeAsyncTest
        api.patchMethod(Timer, 'advanceTimersToNextTimer', delegate => {
            return function (self, args) {
                const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                if (fakeAsyncZoneSpec) {
                    fakeAsyncZoneSpec.tickToNext(args[0]);
                }
                else {
                    return delegate.apply(self, args);
                }
            };
        });
        // patch clearAllTimers(), call removeAllTimers() in the fakeAsyncTest
        api.patchMethod(Timer, 'clearAllTimers', delegate => {
            return function (self, args) {
                const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                if (fakeAsyncZoneSpec) {
                    fakeAsyncZoneSpec.removeAllTimers();
                }
                else {
                    return delegate.apply(self, args);
                }
            };
        });
        // patch getTimerCount(), call getTimerCount() in the fakeAsyncTest
        api.patchMethod(Timer, 'getTimerCount', delegate => {
            return function (self, args) {
                const fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                if (fakeAsyncZoneSpec) {
                    return fakeAsyncZoneSpec.getTimerCount();
                }
                else {
                    return delegate.apply(self, args);
                }
            };
        });
    };
});

/**
 * @license
 * Copyright Google LLC 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('mocha', (global, Zone) => {
    const Mocha = global.Mocha;
    if (typeof Mocha === 'undefined') {
        // return if Mocha is not available, because now zone-testing
        // will load mocha patch with jasmine/jest patch
        return;
    }
    if (typeof Zone === 'undefined') {
        throw new Error('Missing Zone.js');
    }
    const ProxyZoneSpec = Zone['ProxyZoneSpec'];
    const SyncTestZoneSpec = Zone['SyncTestZoneSpec'];
    if (!ProxyZoneSpec) {
        throw new Error('Missing ProxyZoneSpec');
    }
    if (Mocha['__zone_patch__']) {
        throw new Error('"Mocha" has already been patched with "Zone".');
    }
    Mocha['__zone_patch__'] = true;
    const rootZone = Zone.current;
    const syncZone = rootZone.fork(new SyncTestZoneSpec('Mocha.describe'));
    let testZone = null;
    const suiteZone = rootZone.fork(new ProxyZoneSpec());
    const mochaOriginal = {
        after: global.after,
        afterEach: global.afterEach,
        before: global.before,
        beforeEach: global.beforeEach,
        describe: global.describe,
        it: global.it
    };
    function modifyArguments(args, syncTest, asyncTest) {
        for (let i = 0; i < args.length; i++) {
            let arg = args[i];
            if (typeof arg === 'function') {
                // The `done` callback is only passed through if the function expects at
                // least one argument.
                // Note we have to make a function with correct number of arguments,
                // otherwise mocha will
                // think that all functions are sync or async.
                args[i] = (arg.length === 0) ? syncTest(arg) : asyncTest(arg);
                // Mocha uses toString to view the test body in the result list, make sure we return the
                // correct function body
                args[i].toString = function () {
                    return arg.toString();
                };
            }
        }
        return args;
    }
    function wrapDescribeInZone(args) {
        const syncTest = function (fn) {
            return function () {
                return syncZone.run(fn, this, arguments);
            };
        };
        return modifyArguments(args, syncTest);
    }
    function wrapTestInZone(args) {
        const asyncTest = function (fn) {
            return function (done) {
                return testZone.run(fn, this, [done]);
            };
        };
        const syncTest = function (fn) {
            return function () {
                return testZone.run(fn, this);
            };
        };
        return modifyArguments(args, syncTest, asyncTest);
    }
    function wrapSuiteInZone(args) {
        const asyncTest = function (fn) {
            return function (done) {
                return suiteZone.run(fn, this, [done]);
            };
        };
        const syncTest = function (fn) {
            return function () {
                return suiteZone.run(fn, this);
            };
        };
        return modifyArguments(args, syncTest, asyncTest);
    }
    global.describe = global.suite = function () {
        return mochaOriginal.describe.apply(this, wrapDescribeInZone(arguments));
    };
    global.xdescribe = global.suite.skip = function () {
        return mochaOriginal.describe.skip.apply(this, wrapDescribeInZone(arguments));
    };
    global.describe.only = global.suite.only = function () {
        return mochaOriginal.describe.only.apply(this, wrapDescribeInZone(arguments));
    };
    global.it = global.specify = global.test = function () {
        return mochaOriginal.it.apply(this, wrapTestInZone(arguments));
    };
    global.xit = global.xspecify = function () {
        return mochaOriginal.it.skip.apply(this, wrapTestInZone(arguments));
    };
    global.it.only = global.test.only = function () {
        return mochaOriginal.it.only.apply(this, wrapTestInZone(arguments));
    };
    global.after = global.suiteTeardown = function () {
        return mochaOriginal.after.apply(this, wrapSuiteInZone(arguments));
    };
    global.afterEach = global.teardown = function () {
        return mochaOriginal.afterEach.apply(this, wrapTestInZone(arguments));
    };
    global.before = global.suiteSetup = function () {
        return mochaOriginal.before.apply(this, wrapSuiteInZone(arguments));
    };
    global.beforeEach = global.setup = function () {
        return mochaOriginal.beforeEach.apply(this, wrapTestInZone(arguments));
    };
    ((originalRunTest, originalRun) => {
        Mocha.Runner.prototype.runTest = function (fn) {
            Zone.current.scheduleMicroTask('mocha.forceTask', () => {
                originalRunTest.call(this, fn);
            });
        };
        Mocha.Runner.prototype.run = function (fn) {
            this.on('test', (e) => {
                testZone = rootZone.fork(new ProxyZoneSpec());
            });
            this.on('fail', (test, err) => {
                const proxyZoneSpec = testZone && testZone.get('ProxyZoneSpec');
                if (proxyZoneSpec && err) {
                    try {
                        // try catch here in case err.message is not writable
                        err.message += proxyZoneSpec.getAndClearPendingTasksInfo();
                    }
                    catch (error) {
                    }
                }
            });
            return originalRun.call(this, fn);
        };
    })(Mocha.Runner.prototype.runTest, Mocha.Runner.prototype.run);
});

/**
 * @license
 * Copyright Google LLC 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) {
    class AsyncTestZoneSpec {
        constructor(finishCallback, failCallback, namePrefix) {
            this.finishCallback = finishCallback;
            this.failCallback = failCallback;
            this._pendingMicroTasks = false;
            this._pendingMacroTasks = false;
            this._alreadyErrored = false;
            this._isSync = false;
            this._existingFinishTimer = null;
            this.entryFunction = null;
            this.runZone = Zone.current;
            this.unresolvedChainedPromiseCount = 0;
            this.supportWaitUnresolvedChainedPromise = false;
            this.name = 'asyncTestZone for ' + namePrefix;
            this.properties = { 'AsyncTestZoneSpec': this };
            this.supportWaitUnresolvedChainedPromise =
                _global[Zone.__symbol__('supportWaitUnResolvedChainedPromise')] === true;
        }
        isUnresolvedChainedPromisePending() {
            return this.unresolvedChainedPromiseCount > 0;
        }
        _finishCallbackIfDone() {
            // NOTE: Technically the `onHasTask` could fire together with the initial synchronous
            // completion in `onInvoke`. `onHasTask` might call this method when it captured e.g.
            // microtasks in the proxy zone that now complete as part of this async zone run.
            // Consider the following scenario:
            //    1. A test `beforeEach` schedules a microtask in the ProxyZone.
            //    2. An actual empty `it` spec executes in the AsyncTestZone` (using e.g. `waitForAsync`).
            //    3. The `onInvoke` invokes `_finishCallbackIfDone` because the spec runs synchronously.
            //    4. We wait the scheduled timeout (see below) to account for unhandled promises.
            //    5. The microtask from (1) finishes and `onHasTask` is invoked.
            //    --> We register a second `_finishCallbackIfDone` even though we have scheduled a timeout.
            // If the finish timeout from below is already scheduled, terminate the existing scheduled
            // finish invocation, avoiding calling `jasmine` `done` multiple times. *Note* that we would
            // want to schedule a new finish callback in case the task state changes again.
            if (this._existingFinishTimer !== null) {
                clearTimeout(this._existingFinishTimer);
                this._existingFinishTimer = null;
            }
            if (!(this._pendingMicroTasks || this._pendingMacroTasks ||
                (this.supportWaitUnresolvedChainedPromise && this.isUnresolvedChainedPromisePending()))) {
                // We wait until the next tick because we would like to catch unhandled promises which could
                // cause test logic to be executed. In such cases we cannot finish with tasks pending then.
                this.runZone.run(() => {
                    this._existingFinishTimer = setTimeout(() => {
                        if (!this._alreadyErrored && !(this._pendingMicroTasks || this._pendingMacroTasks)) {
                            this.finishCallback();
                        }
                    }, 0);
                });
            }
        }
        patchPromiseForTest() {
            if (!this.supportWaitUnresolvedChainedPromise) {
                return;
            }
            const patchPromiseForTest = Promise[Zone.__symbol__('patchPromiseForTest')];
            if (patchPromiseForTest) {
                patchPromiseForTest();
            }
        }
        unPatchPromiseForTest() {
            if (!this.supportWaitUnresolvedChainedPromise) {
                return;
            }
            const unPatchPromiseForTest = Promise[Zone.__symbol__('unPatchPromiseForTest')];
            if (unPatchPromiseForTest) {
                unPatchPromiseForTest();
            }
        }
        onScheduleTask(delegate, current, target, task) {
            if (task.type !== 'eventTask') {
                this._isSync = false;
            }
            if (task.type === 'microTask' && task.data && task.data instanceof Promise) {
                // check whether the promise is a chained promise
                if (task.data[AsyncTestZoneSpec.symbolParentUnresolved] === true) {
                    // chained promise is being scheduled
                    this.unresolvedChainedPromiseCount--;
                }
            }
            return delegate.scheduleTask(target, task);
        }
        onInvokeTask(delegate, current, target, task, applyThis, applyArgs) {
            if (task.type !== 'eventTask') {
                this._isSync = false;
            }
            return delegate.invokeTask(target, task, applyThis, applyArgs);
        }
        onCancelTask(delegate, current, target, task) {
            if (task.type !== 'eventTask') {
                this._isSync = false;
            }
            return delegate.cancelTask(target, task);
        }
        // Note - we need to use onInvoke at the moment to call finish when a test is
        // fully synchronous. TODO(juliemr): remove this when the logic for
        // onHasTask changes and it calls whenever the task queues are dirty.
        // updated by(JiaLiPassion), only call finish callback when no task
        // was scheduled/invoked/canceled.
        onInvoke(parentZoneDelegate, currentZone, targetZone, delegate, applyThis, applyArgs, source) {
            if (!this.entryFunction) {
                this.entryFunction = delegate;
            }
            try {
                this._isSync = true;
                return parentZoneDelegate.invoke(targetZone, delegate, applyThis, applyArgs, source);
            }
            finally {
                // We need to check the delegate is the same as entryFunction or not.
                // Consider the following case.
                //
                // asyncTestZone.run(() => { // Here the delegate will be the entryFunction
                //   Zone.current.run(() => { // Here the delegate will not be the entryFunction
                //   });
                // });
                //
                // We only want to check whether there are async tasks scheduled
                // for the entry function.
                if (this._isSync && this.entryFunction === delegate) {
                    this._finishCallbackIfDone();
                }
            }
        }
        onHandleError(parentZoneDelegate, currentZone, targetZone, error) {
            // Let the parent try to handle the error.
            const result = parentZoneDelegate.handleError(targetZone, error);
            if (result) {
                this.failCallback(error);
                this._alreadyErrored = true;
            }
            return false;
        }
        onHasTask(delegate, current, target, hasTaskState) {
            delegate.hasTask(target, hasTaskState);
            // We should only trigger finishCallback when the target zone is the AsyncTestZone
            // Consider the following cases.
            //
            // const childZone = asyncTestZone.fork({
            //   name: 'child',
            //   onHasTask: ...
            // });
            //
            // So we have nested zones declared the onHasTask hook, in this case,
            // the onHasTask will be triggered twice, and cause the finishCallbackIfDone()
            // is also be invoked twice. So we need to only trigger the finishCallbackIfDone()
            // when the current zone is the same as the target zone.
            if (current !== target) {
                return;
            }
            if (hasTaskState.change == 'microTask') {
                this._pendingMicroTasks = hasTaskState.microTask;
                this._finishCallbackIfDone();
            }
            else if (hasTaskState.change == 'macroTask') {
                this._pendingMacroTasks = hasTaskState.macroTask;
                this._finishCallbackIfDone();
            }
        }
    }
    AsyncTestZoneSpec.symbolParentUnresolved = Zone.__symbol__('parentUnresolved');
    // Export the class so that new instances can be created with proper
    // constructor params.
    Zone['AsyncTestZoneSpec'] = AsyncTestZoneSpec;
})(typeof window !== 'undefined' && window || typeof self !== 'undefined' && self || global);
Zone.__load_patch('asynctest', (global, Zone, api) => {
    /**
     * Wraps a test function in an asynchronous test zone. The test will automatically
     * complete when all asynchronous calls within this zone are done.
     */
    Zone[api.symbol('asyncTest')] = function asyncTest(fn) {
        // If we're running using the Jasmine test framework, adapt to call the 'done'
        // function when asynchronous activity is finished.
        if (global.jasmine) {
            // Not using an arrow function to preserve context passed from call site
            return function (done) {
                if (!done) {
                    // if we run beforeEach in @angular/core/testing/testing_internal then we get no done
                    // fake it here and assume sync.
                    done = function () { };
                    done.fail = function (e) {
                        throw e;
                    };
                }
                runInTestZone(fn, this, done, (err) => {
                    if (typeof err === 'string') {
                        return done.fail(new Error(err));
                    }
                    else {
                        done.fail(err);
                    }
                });
            };
        }
        // Otherwise, return a promise which will resolve when asynchronous activity
        // is finished. This will be correctly consumed by the Mocha framework with
        // it('...', async(myFn)); or can be used in a custom framework.
        // Not using an arrow function to preserve context passed from call site
        return function () {
            return new Promise((finishCallback, failCallback) => {
                runInTestZone(fn, this, finishCallback, failCallback);
            });
        };
    };
    function runInTestZone(fn, context, finishCallback, failCallback) {
        const currentZone = Zone.current;
        const AsyncTestZoneSpec = Zone['AsyncTestZoneSpec'];
        if (AsyncTestZoneSpec === undefined) {
            throw new Error('AsyncTestZoneSpec is needed for the async() test helper but could not be found. ' +
                'Please make sure that your environment includes zone.js/plugins/async-test');
        }
        const ProxyZoneSpec = Zone['ProxyZoneSpec'];
        if (!ProxyZoneSpec) {
            throw new Error('ProxyZoneSpec is needed for the async() test helper but could not be found. ' +
                'Please make sure that your environment includes zone.js/plugins/proxy');
        }
        const proxyZoneSpec = ProxyZoneSpec.get();
        ProxyZoneSpec.assertPresent();
        // We need to create the AsyncTestZoneSpec outside the ProxyZone.
        // If we do it in ProxyZone then we will get to infinite recursion.
        const proxyZone = Zone.current.getZoneWith('ProxyZoneSpec');
        const previousDelegate = proxyZoneSpec.getDelegate();
        proxyZone.parent.run(() => {
            const testZoneSpec = new AsyncTestZoneSpec(() => {
                // Need to restore the original zone.
                if (proxyZoneSpec.getDelegate() == testZoneSpec) {
                    // Only reset the zone spec if it's
                    // still this one. Otherwise, assume
                    // it's OK.
                    proxyZoneSpec.setDelegate(previousDelegate);
                }
                testZoneSpec.unPatchPromiseForTest();
                currentZone.run(() => {
                    finishCallback();
                });
            }, (error) => {
                // Need to restore the original zone.
                if (proxyZoneSpec.getDelegate() == testZoneSpec) {
                    // Only reset the zone spec if it's sill this one. Otherwise, assume it's OK.
                    proxyZoneSpec.setDelegate(previousDelegate);
                }
                testZoneSpec.unPatchPromiseForTest();
                currentZone.run(() => {
                    failCallback(error);
                });
            }, 'test');
            proxyZoneSpec.setDelegate(testZoneSpec);
            testZoneSpec.patchPromiseForTest();
        });
        return Zone.current.runGuarded(fn, context);
    }
});

/**
 * @license
 * Copyright Google LLC 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) {
    const OriginalDate = global.Date;
    // Since when we compile this file to `es2015`, and if we define
    // this `FakeDate` as `class FakeDate`, and then set `FakeDate.prototype`
    // there will be an error which is `Cannot assign to read only property 'prototype'`
    // so we need to use function implementation here.
    function FakeDate() {
        if (arguments.length === 0) {
            const d = new OriginalDate();
            d.setTime(FakeDate.now());
            return d;
        }
        else {
            const args = Array.prototype.slice.call(arguments);
            return new OriginalDate(...args);
        }
    }
    FakeDate.now = function () {
        const fakeAsyncTestZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
        if (fakeAsyncTestZoneSpec) {
            return fakeAsyncTestZoneSpec.getFakeSystemTime();
        }
        return OriginalDate.now.apply(this, arguments);
    };
    FakeDate.UTC = OriginalDate.UTC;
    FakeDate.parse = OriginalDate.parse;
    // keep a reference for zone patched timer function
    const timers = {
        setTimeout: global.setTimeout,
        setInterval: global.setInterval,
        clearTimeout: global.clearTimeout,
        clearInterval: global.clearInterval
    };
    class Scheduler {
        constructor() {
            // Scheduler queue with the tuple of end time and callback function - sorted by end time.
            this._schedulerQueue = [];
            // Current simulated time in millis.
            this._currentTickTime = 0;
            // Current fake system base time in millis.
            this._currentFakeBaseSystemTime = OriginalDate.now();
            // track requeuePeriodicTimer
            this._currentTickRequeuePeriodicEntries = [];
        }
        getCurrentTickTime() {
            return this._currentTickTime;
        }
        getFakeSystemTime() {
            return this._currentFakeBaseSystemTime + this._currentTickTime;
        }
        setFakeBaseSystemTime(fakeBaseSystemTime) {
            this._currentFakeBaseSystemTime = fakeBaseSystemTime;
        }
        getRealSystemTime() {
            return OriginalDate.now();
        }
        scheduleFunction(cb, delay, options) {
            options = Object.assign({
                args: [],
                isPeriodic: false,
                isRequestAnimationFrame: false,
                id: -1,
                isRequeuePeriodic: false
            }, options);
            let currentId = options.id < 0 ? Scheduler.nextId++ : options.id;
            let endTime = this._currentTickTime + delay;
            // Insert so that scheduler queue remains sorted by end time.
            let newEntry = {
                endTime: endTime,
                id: currentId,
                func: cb,
                args: options.args,
                delay: delay,
                isPeriodic: options.isPeriodic,
                isRequestAnimationFrame: options.isRequestAnimationFrame
            };
            if (options.isRequeuePeriodic) {
                this._currentTickRequeuePeriodicEntries.push(newEntry);
            }
            let i = 0;
            for (; i < this._schedulerQueue.length; i++) {
                let currentEntry = this._schedulerQueue[i];
                if (newEntry.endTime < currentEntry.endTime) {
                    break;
                }
            }
            this._schedulerQueue.splice(i, 0, newEntry);
            return currentId;
        }
        removeScheduledFunctionWithId(id) {
            for (let i = 0; i < this._schedulerQueue.length; i++) {
                if (this._schedulerQueue[i].id == id) {
                    this._schedulerQueue.splice(i, 1);
                    break;
                }
            }
        }
        removeAll() {
            this._schedulerQueue = [];
        }
        getTimerCount() {
            return this._schedulerQueue.length;
        }
        tickToNext(step = 1, doTick, tickOptions) {
            if (this._schedulerQueue.length < step) {
                return;
            }
            // Find the last task currently queued in the scheduler queue and tick
            // till that time.
            const startTime = this._currentTickTime;
            const targetTask = this._schedulerQueue[step - 1];
            this.tick(targetTask.endTime - startTime, doTick, tickOptions);
        }
        tick(millis = 0, doTick, tickOptions) {
            let finalTime = this._currentTickTime + millis;
            let lastCurrentTime = 0;
            tickOptions = Object.assign({ processNewMacroTasksSynchronously: true }, tickOptions);
            // we need to copy the schedulerQueue so nested timeout
            // will not be wrongly called in the current tick
            // https://github.com/angular/angular/issues/33799
            const schedulerQueue = tickOptions.processNewMacroTasksSynchronously ?
                this._schedulerQueue :
                this._schedulerQueue.slice();
            if (schedulerQueue.length === 0 && doTick) {
                doTick(millis);
                return;
            }
            while (schedulerQueue.length > 0) {
                // clear requeueEntries before each loop
                this._currentTickRequeuePeriodicEntries = [];
                let current = schedulerQueue[0];
                if (finalTime < current.endTime) {
                    // Done processing the queue since it's sorted by endTime.
                    break;
                }
                else {
                    // Time to run scheduled function. Remove it from the head of queue.
                    let current = schedulerQueue.shift();
                    if (!tickOptions.processNewMacroTasksSynchronously) {
                        const idx = this._schedulerQueue.indexOf(current);
                        if (idx >= 0) {
                            this._schedulerQueue.splice(idx, 1);
                        }
                    }
                    lastCurrentTime = this._currentTickTime;
                    this._currentTickTime = current.endTime;
                    if (doTick) {
                        doTick(this._currentTickTime - lastCurrentTime);
                    }
                    let retval = current.func.apply(global, current.isRequestAnimationFrame ? [this._currentTickTime] : current.args);
                    if (!retval) {
                        // Uncaught exception in the current scheduled function. Stop processing the queue.
                        break;
                    }
                    // check is there any requeue periodic entry is added in
                    // current loop, if there is, we need to add to current loop
                    if (!tickOptions.processNewMacroTasksSynchronously) {
                        this._currentTickRequeuePeriodicEntries.forEach(newEntry => {
                            let i = 0;
                            for (; i < schedulerQueue.length; i++) {
                                const currentEntry = schedulerQueue[i];
                                if (newEntry.endTime < currentEntry.endTime) {
                                    break;
                                }
                            }
                            schedulerQueue.splice(i, 0, newEntry);
                        });
                    }
                }
            }
            lastCurrentTime = this._currentTickTime;
            this._currentTickTime = finalTime;
            if (doTick) {
                doTick(this._currentTickTime - lastCurrentTime);
            }
        }
        flushOnlyPendingTimers(doTick) {
            if (this._schedulerQueue.length === 0) {
                return 0;
            }
            // Find the last task currently queued in the scheduler queue and tick
            // till that time.
            const startTime = this._currentTickTime;
            const lastTask = this._schedulerQueue[this._schedulerQueue.length - 1];
            this.tick(lastTask.endTime - startTime, doTick, { processNewMacroTasksSynchronously: false });
            return this._currentTickTime - startTime;
        }
        flush(limit = 20, flushPeriodic = false, doTick) {
            if (flushPeriodic) {
                return this.flushPeriodic(doTick);
            }
            else {
                return this.flushNonPeriodic(limit, doTick);
            }
        }
        flushPeriodic(doTick) {
            if (this._schedulerQueue.length === 0) {
                return 0;
            }
            // Find the last task currently queued in the scheduler queue and tick
            // till that time.
            const startTime = this._currentTickTime;
            const lastTask = this._schedulerQueue[this._schedulerQueue.length - 1];
            this.tick(lastTask.endTime - startTime, doTick);
            return this._currentTickTime - startTime;
        }
        flushNonPeriodic(limit, doTick) {
            const startTime = this._currentTickTime;
            let lastCurrentTime = 0;
            let count = 0;
            while (this._schedulerQueue.length > 0) {
                count++;
                if (count > limit) {
                    throw new Error('flush failed after reaching the limit of ' + limit +
                        ' tasks. Does your code use a polling timeout?');
                }
                // flush only non-periodic timers.
                // If the only remaining tasks are periodic(or requestAnimationFrame), finish flushing.
                if (this._schedulerQueue.filter(task => !task.isPeriodic && !task.isRequestAnimationFrame)
                    .length === 0) {
                    break;
                }
                const current = this._schedulerQueue.shift();
                lastCurrentTime = this._currentTickTime;
                this._currentTickTime = current.endTime;
                if (doTick) {
                    // Update any secondary schedulers like Jasmine mock Date.
                    doTick(this._currentTickTime - lastCurrentTime);
                }
                const retval = current.func.apply(global, current.args);
                if (!retval) {
                    // Uncaught exception in the current scheduled function. Stop processing the queue.
                    break;
                }
            }
            return this._currentTickTime - startTime;
        }
    }
    // Next scheduler id.
    Scheduler.nextId = 1;
    class FakeAsyncTestZoneSpec {
        constructor(namePrefix, trackPendingRequestAnimationFrame = false, macroTaskOptions) {
            this.trackPendingRequestAnimationFrame = trackPendingRequestAnimationFrame;
            this.macroTaskOptions = macroTaskOptions;
            this._scheduler = new Scheduler();
            this._microtasks = [];
            this._lastError = null;
            this._uncaughtPromiseErrors = Promise[Zone.__symbol__('uncaughtPromiseErrors')];
            this.pendingPeriodicTimers = [];
            this.pendingTimers = [];
            this.patchDateLocked = false;
            this.properties = { 'FakeAsyncTestZoneSpec': this };
            this.name = 'fakeAsyncTestZone for ' + namePrefix;
            // in case user can't access the construction of FakeAsyncTestSpec
            // user can also define macroTaskOptions by define a global variable.
            if (!this.macroTaskOptions) {
                this.macroTaskOptions = global[Zone.__symbol__('FakeAsyncTestMacroTask')];
            }
        }
        static assertInZone() {
            if (Zone.current.get('FakeAsyncTestZoneSpec') == null) {
                throw new Error('The code should be running in the fakeAsync zone to call this function');
            }
        }
        _fnAndFlush(fn, completers) {
            return (...args) => {
                fn.apply(global, args);
                if (this._lastError === null) { // Success
                    if (completers.onSuccess != null) {
                        completers.onSuccess.apply(global);
                    }
                    // Flush microtasks only on success.
                    this.flushMicrotasks();
                }
                else { // Failure
                    if (completers.onError != null) {
                        completers.onError.apply(global);
                    }
                }
                // Return true if there were no errors, false otherwise.
                return this._lastError === null;
            };
        }
        static _removeTimer(timers, id) {
            let index = timers.indexOf(id);
            if (index > -1) {
                timers.splice(index, 1);
            }
        }
        _dequeueTimer(id) {
            return () => {
                FakeAsyncTestZoneSpec._removeTimer(this.pendingTimers, id);
            };
        }
        _requeuePeriodicTimer(fn, interval, args, id) {
            return () => {
                // Requeue the timer callback if it's not been canceled.
                if (this.pendingPeriodicTimers.indexOf(id) !== -1) {
                    this._scheduler.scheduleFunction(fn, interval, { args, isPeriodic: true, id, isRequeuePeriodic: true });
                }
            };
        }
        _dequeuePeriodicTimer(id) {
            return () => {
                FakeAsyncTestZoneSpec._removeTimer(this.pendingPeriodicTimers, id);
            };
        }
        _setTimeout(fn, delay, args, isTimer = true) {
            let removeTimerFn = this._dequeueTimer(Scheduler.nextId);
            // Queue the callback and dequeue the timer on success and error.
            let cb = this._fnAndFlush(fn, { onSuccess: removeTimerFn, onError: removeTimerFn });
            let id = this._scheduler.scheduleFunction(cb, delay, { args, isRequestAnimationFrame: !isTimer });
            if (isTimer) {
                this.pendingTimers.push(id);
            }
            return id;
        }
        _clearTimeout(id) {
            FakeAsyncTestZoneSpec._removeTimer(this.pendingTimers, id);
            this._scheduler.removeScheduledFunctionWithId(id);
        }
        _setInterval(fn, interval, args) {
            let id = Scheduler.nextId;
            let completers = { onSuccess: null, onError: this._dequeuePeriodicTimer(id) };
            let cb = this._fnAndFlush(fn, completers);
            // Use the callback created above to requeue on success.
            completers.onSuccess = this._requeuePeriodicTimer(cb, interval, args, id);
            // Queue the callback and dequeue the periodic timer only on error.
            this._scheduler.scheduleFunction(cb, interval, { args, isPeriodic: true });
            this.pendingPeriodicTimers.push(id);
            return id;
        }
        _clearInterval(id) {
            FakeAsyncTestZoneSpec._removeTimer(this.pendingPeriodicTimers, id);
            this._scheduler.removeScheduledFunctionWithId(id);
        }
        _resetLastErrorAndThrow() {
            let error = this._lastError || this._uncaughtPromiseErrors[0];
            this._uncaughtPromiseErrors.length = 0;
            this._lastError = null;
            throw error;
        }
        getCurrentTickTime() {
            return this._scheduler.getCurrentTickTime();
        }
        getFakeSystemTime() {
            return this._scheduler.getFakeSystemTime();
        }
        setFakeBaseSystemTime(realTime) {
            this._scheduler.setFakeBaseSystemTime(realTime);
        }
        getRealSystemTime() {
            return this._scheduler.getRealSystemTime();
        }
        static patchDate() {
            if (!!global[Zone.__symbol__('disableDatePatching')]) {
                // we don't want to patch global Date
                // because in some case, global Date
                // is already being patched, we need to provide
                // an option to let user still use their
                // own version of Date.
                return;
            }
            if (global['Date'] === FakeDate) {
                // already patched
                return;
            }
            global['Date'] = FakeDate;
            FakeDate.prototype = OriginalDate.prototype;
            // try check and reset timers
            // because jasmine.clock().install() may
            // have replaced the global timer
            FakeAsyncTestZoneSpec.checkTimerPatch();
        }
        static resetDate() {
            if (global['Date'] === FakeDate) {
                global['Date'] = OriginalDate;
            }
        }
        static checkTimerPatch() {
            if (global.setTimeout !== timers.setTimeout) {
                global.setTimeout = timers.setTimeout;
                global.clearTimeout = timers.clearTimeout;
            }
            if (global.setInterval !== timers.setInterval) {
                global.setInterval = timers.setInterval;
                global.clearInterval = timers.clearInterval;
            }
        }
        lockDatePatch() {
            this.patchDateLocked = true;
            FakeAsyncTestZoneSpec.patchDate();
        }
        unlockDatePatch() {
            this.patchDateLocked = false;
            FakeAsyncTestZoneSpec.resetDate();
        }
        tickToNext(steps = 1, doTick, tickOptions = { processNewMacroTasksSynchronously: true }) {
            if (steps <= 0) {
                return;
            }
            FakeAsyncTestZoneSpec.assertInZone();
            this.flushMicrotasks();
            this._scheduler.tickToNext(steps, doTick, tickOptions);
            if (this._lastError !== null) {
                this._resetLastErrorAndThrow();
            }
        }
        tick(millis = 0, doTick, tickOptions = { processNewMacroTasksSynchronously: true }) {
            FakeAsyncTestZoneSpec.assertInZone();
            this.flushMicrotasks();
            this._scheduler.tick(millis, doTick, tickOptions);
            if (this._lastError !== null) {
                this._resetLastErrorAndThrow();
            }
        }
        flushMicrotasks() {
            FakeAsyncTestZoneSpec.assertInZone();
            const flushErrors = () => {
                if (this._lastError !== null || this._uncaughtPromiseErrors.length) {
                    // If there is an error stop processing the microtask queue and rethrow the error.
                    this._resetLastErrorAndThrow();
                }
            };
            while (this._microtasks.length > 0) {
                let microtask = this._microtasks.shift();
                microtask.func.apply(microtask.target, microtask.args);
            }
            flushErrors();
        }
        flush(limit, flushPeriodic, doTick) {
            FakeAsyncTestZoneSpec.assertInZone();
            this.flushMicrotasks();
            const elapsed = this._scheduler.flush(limit, flushPeriodic, doTick);
            if (this._lastError !== null) {
                this._resetLastErrorAndThrow();
            }
            return elapsed;
        }
        flushOnlyPendingTimers(doTick) {
            FakeAsyncTestZoneSpec.assertInZone();
            this.flushMicrotasks();
            const elapsed = this._scheduler.flushOnlyPendingTimers(doTick);
            if (this._lastError !== null) {
                this._resetLastErrorAndThrow();
            }
            return elapsed;
        }
        removeAllTimers() {
            FakeAsyncTestZoneSpec.assertInZone();
            this._scheduler.removeAll();
            this.pendingPeriodicTimers = [];
            this.pendingTimers = [];
        }
        getTimerCount() {
            return this._scheduler.getTimerCount() + this._microtasks.length;
        }
        onScheduleTask(delegate, current, target, task) {
            switch (task.type) {
                case 'microTask':
                    let args = task.data && task.data.args;
                    // should pass additional arguments to callback if have any
                    // currently we know process.nextTick will have such additional
                    // arguments
                    let additionalArgs;
                    if (args) {
                        let callbackIndex = task.data.cbIdx;
                        if (typeof args.length === 'number' && args.length > callbackIndex + 1) {
                            additionalArgs = Array.prototype.slice.call(args, callbackIndex + 1);
                        }
                    }
                    this._microtasks.push({
                        func: task.invoke,
                        args: additionalArgs,
                        target: task.data && task.data.target
                    });
                    break;
                case 'macroTask':
                    switch (task.source) {
                        case 'setTimeout':
                            task.data['handleId'] = this._setTimeout(task.invoke, task.data['delay'], Array.prototype.slice.call(task.data['args'], 2));
                            break;
                        case 'setImmediate':
                            task.data['handleId'] = this._setTimeout(task.invoke, 0, Array.prototype.slice.call(task.data['args'], 1));
                            break;
                        case 'setInterval':
                            task.data['handleId'] = this._setInterval(task.invoke, task.data['delay'], Array.prototype.slice.call(task.data['args'], 2));
                            break;
                        case 'XMLHttpRequest.send':
                            throw new Error('Cannot make XHRs from within a fake async test. Request URL: ' +
                                task.data['url']);
                        case 'requestAnimationFrame':
                        case 'webkitRequestAnimationFrame':
                        case 'mozRequestAnimationFrame':
                            // Simulate a requestAnimationFrame by using a setTimeout with 16 ms.
                            // (60 frames per second)
                            task.data['handleId'] = this._setTimeout(task.invoke, 16, task.data['args'], this.trackPendingRequestAnimationFrame);
                            break;
                        default:
                            // user can define which macroTask they want to support by passing
                            // macroTaskOptions
                            const macroTaskOption = this.findMacroTaskOption(task);
                            if (macroTaskOption) {
                                const args = task.data && task.data['args'];
                                const delay = args && args.length > 1 ? args[1] : 0;
                                let callbackArgs = macroTaskOption.callbackArgs ? macroTaskOption.callbackArgs : args;
                                if (!!macroTaskOption.isPeriodic) {
                                    // periodic macroTask, use setInterval to simulate
                                    task.data['handleId'] = this._setInterval(task.invoke, delay, callbackArgs);
                                    task.data.isPeriodic = true;
                                }
                                else {
                                    // not periodic, use setTimeout to simulate
                                    task.data['handleId'] = this._setTimeout(task.invoke, delay, callbackArgs);
                                }
                                break;
                            }
                            throw new Error('Unknown macroTask scheduled in fake async test: ' + task.source);
                    }
                    break;
                case 'eventTask':
                    task = delegate.scheduleTask(target, task);
                    break;
            }
            return task;
        }
        onCancelTask(delegate, current, target, task) {
            switch (task.source) {
                case 'setTimeout':
                case 'requestAnimationFrame':
                case 'webkitRequestAnimationFrame':
                case 'mozRequestAnimationFrame':
                    return this._clearTimeout(task.data['handleId']);
                case 'setInterval':
                    return this._clearInterval(task.data['handleId']);
                default:
                    // user can define which macroTask they want to support by passing
                    // macroTaskOptions
                    const macroTaskOption = this.findMacroTaskOption(task);
                    if (macroTaskOption) {
                        const handleId = task.data['handleId'];
                        return macroTaskOption.isPeriodic ? this._clearInterval(handleId) :
                            this._clearTimeout(handleId);
                    }
                    return delegate.cancelTask(target, task);
            }
        }
        onInvoke(delegate, current, target, callback, applyThis, applyArgs, source) {
            try {
                FakeAsyncTestZoneSpec.patchDate();
                return delegate.invoke(target, callback, applyThis, applyArgs, source);
            }
            finally {
                if (!this.patchDateLocked) {
                    FakeAsyncTestZoneSpec.resetDate();
                }
            }
        }
        findMacroTaskOption(task) {
            if (!this.macroTaskOptions) {
                return null;
            }
            for (let i = 0; i < this.macroTaskOptions.length; i++) {
                const macroTaskOption = this.macroTaskOptions[i];
                if (macroTaskOption.source === task.source) {
                    return macroTaskOption;
                }
            }
            return null;
        }
        onHandleError(parentZoneDelegate, currentZone, targetZone, error) {
            this._lastError = error;
            return false; // Don't propagate error to parent zone.
        }
    }
    // Export the class so that new instances can be created with proper
    // constructor params.
    Zone['FakeAsyncTestZoneSpec'] = FakeAsyncTestZoneSpec;
})(typeof window === 'object' && window || typeof self === 'object' && self || global);
Zone.__load_patch('fakeasync', (global, Zone, api) => {
    const FakeAsyncTestZoneSpec = Zone && Zone['FakeAsyncTestZoneSpec'];
    function getProxyZoneSpec() {
        return Zone && Zone['ProxyZoneSpec'];
    }
    let _fakeAsyncTestZoneSpec = null;
    /**
     * Clears out the shared fake async zone for a test.
     * To be called in a global `beforeEach`.
     *
     * @experimental
     */
    function resetFakeAsyncZone() {
        if (_fakeAsyncTestZoneSpec) {
            _fakeAsyncTestZoneSpec.unlockDatePatch();
        }
        _fakeAsyncTestZoneSpec = null;
        // in node.js testing we may not have ProxyZoneSpec in which case there is nothing to reset.
        getProxyZoneSpec() && getProxyZoneSpec().assertPresent().resetDelegate();
    }
    /**
     * Wraps a function to be executed in the fakeAsync zone:
     * - microtasks are manually executed by calling `flushMicrotasks()`,
     * - timers are synchronous, `tick()` simulates the asynchronous passage of time.
     *
     * If there are any pending timers at the end of the function, an exception will be thrown.
     *
     * Can be used to wrap inject() calls.
     *
     * ## Example
     *
     * {@example core/testing/ts/fake_async.ts region='basic'}
     *
     * @param fn
     * @returns The function wrapped to be executed in the fakeAsync zone
     *
     * @experimental
     */
    function fakeAsync(fn) {
        // Not using an arrow function to preserve context passed from call site
        const fakeAsyncFn = function (...args) {
            const ProxyZoneSpec = getProxyZoneSpec();
            if (!ProxyZoneSpec) {
                throw new Error('ProxyZoneSpec is needed for the async() test helper but could not be found. ' +
                    'Please make sure that your environment includes zone.js/plugins/proxy');
            }
            const proxyZoneSpec = ProxyZoneSpec.assertPresent();
            if (Zone.current.get('FakeAsyncTestZoneSpec')) {
                throw new Error('fakeAsync() calls can not be nested');
            }
            try {
                // in case jasmine.clock init a fakeAsyncTestZoneSpec
                if (!_fakeAsyncTestZoneSpec) {
                    if (proxyZoneSpec.getDelegate() instanceof FakeAsyncTestZoneSpec) {
                        throw new Error('fakeAsync() calls can not be nested');
                    }
                    _fakeAsyncTestZoneSpec = new FakeAsyncTestZoneSpec();
                }
                let res;
                const lastProxyZoneSpec = proxyZoneSpec.getDelegate();
                proxyZoneSpec.setDelegate(_fakeAsyncTestZoneSpec);
                _fakeAsyncTestZoneSpec.lockDatePatch();
                try {
                    res = fn.apply(this, args);
                    flushMicrotasks();
                }
                finally {
                    proxyZoneSpec.setDelegate(lastProxyZoneSpec);
                }
                if (_fakeAsyncTestZoneSpec.pendingPeriodicTimers.length > 0) {
                    throw new Error(`${_fakeAsyncTestZoneSpec.pendingPeriodicTimers.length} ` +
                        `periodic timer(s) still in the queue.`);
                }
                if (_fakeAsyncTestZoneSpec.pendingTimers.length > 0) {
                    throw new Error(`${_fakeAsyncTestZoneSpec.pendingTimers.length} timer(s) still in the queue.`);
                }
                return res;
            }
            finally {
                resetFakeAsyncZone();
            }
        };
        fakeAsyncFn.isFakeAsync = true;
        return fakeAsyncFn;
    }
    function _getFakeAsyncZoneSpec() {
        if (_fakeAsyncTestZoneSpec == null) {
            _fakeAsyncTestZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
            if (_fakeAsyncTestZoneSpec == null) {
                throw new Error('The code should be running in the fakeAsync zone to call this function');
            }
        }
        return _fakeAsyncTestZoneSpec;
    }
    /**
     * Simulates the asynchronous passage of time for the timers in the fakeAsync zone.
     *
     * The microtasks queue is drained at the very start of this function and after any timer callback
     * has been executed.
     *
     * ## Example
     *
     * {@example core/testing/ts/fake_async.ts region='basic'}
     *
     * @experimental
     */
    function tick(millis = 0, ignoreNestedTimeout = false) {
        _getFakeAsyncZoneSpec().tick(millis, null, ignoreNestedTimeout);
    }
    /**
     * Simulates the asynchronous passage of time for the timers in the fakeAsync zone by
     * draining the macrotask queue until it is empty. The returned value is the milliseconds
     * of time that would have been elapsed.
     *
     * @param maxTurns
     * @returns The simulated time elapsed, in millis.
     *
     * @experimental
     */
    function flush(maxTurns) {
        return _getFakeAsyncZoneSpec().flush(maxTurns);
    }
    /**
     * Discard all remaining periodic tasks.
     *
     * @experimental
     */
    function discardPeriodicTasks() {
        const zoneSpec = _getFakeAsyncZoneSpec();
        zoneSpec.pendingPeriodicTimers;
        zoneSpec.pendingPeriodicTimers.length = 0;
    }
    /**
     * Flush any pending microtasks.
     *
     * @experimental
     */
    function flushMicrotasks() {
        _getFakeAsyncZoneSpec().flushMicrotasks();
    }
    Zone[api.symbol('fakeAsyncTest')] =
        { resetFakeAsyncZone, flushMicrotasks, discardPeriodicTasks, tick, flush, fakeAsync };
}, true);

/**
 * @license
 * Copyright Google LLC 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
 */
/**
 * Promise for async/fakeAsync zoneSpec test
 * can support async operation which not supported by zone.js
 * such as
 * it ('test jsonp in AsyncZone', async() => {
 *   new Promise(res => {
 *     jsonp(url, (data) => {
 *       // success callback
 *       res(data);
 *     });
 *   }).then((jsonpResult) => {
 *     // get jsonp result.
 *
 *     // user will expect AsyncZoneSpec wait for
 *     // then, but because jsonp is not zone aware
 *     // AsyncZone will finish before then is called.
 *   });
 * });
 */
Zone.__load_patch('promisefortest', (global, Zone, api) => {
    const symbolState = api.symbol('state');
    const UNRESOLVED = null;
    const symbolParentUnresolved = api.symbol('parentUnresolved');
    // patch Promise.prototype.then to keep an internal
    // number for tracking unresolved chained promise
    // we will decrease this number when the parent promise
    // being resolved/rejected and chained promise was
    // scheduled as a microTask.
    // so we can know such kind of chained promise still
    // not resolved in AsyncTestZone
    Promise[api.symbol('patchPromiseForTest')] = function patchPromiseForTest() {
        let oriThen = Promise[Zone.__symbol__('ZonePromiseThen')];
        if (oriThen) {
            return;
        }
        oriThen = Promise[Zone.__symbol__('ZonePromiseThen')] = Promise.prototype.then;
        Promise.prototype.then = function () {
            const chained = oriThen.apply(this, arguments);
            if (this[symbolState] === UNRESOLVED) {
                // parent promise is unresolved.
                const asyncTestZoneSpec = Zone.current.get('AsyncTestZoneSpec');
                if (asyncTestZoneSpec) {
                    asyncTestZoneSpec.unresolvedChainedPromiseCount++;
                    chained[symbolParentUnresolved] = true;
                }
            }
            return chained;
        };
    };
    Promise[api.symbol('unPatchPromiseForTest')] = function unpatchPromiseForTest() {
        // restore origin then
        const oriThen = Promise[Zone.__symbol__('ZonePromiseThen')];
        if (oriThen) {
            Promise.prototype.then = oriThen;
            Promise[Zone.__symbol__('ZonePromiseThen')] = undefined;
        }
    };
});
