'use strict';
var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
/**
 * @license Angular v<unknown>
 * (c) 2010-2022 Google LLC. https://angular.io/
 * License: MIT
 */
(function (factory) {
    typeof define === 'function' && define.amd ? define(factory) :
        factory();
})((function () {
    'use strict';
    ((function (global) {
        var _a;
        var performance = global['performance'];
        function mark(name) {
            performance && performance['mark'] && performance['mark'](name);
        }
        function performanceMeasure(name, label) {
            performance && performance['measure'] && performance['measure'](name, label);
        }
        mark('Zone');
        // 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.
        var symbolPrefix = global['__Zone_symbol_prefix'] || '__zone_symbol__';
        function __symbol__(name) {
            return symbolPrefix + name;
        }
        var 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'];
            }
        }
        var Zone = /** @class */ (function () {
            function Zone(parent, zoneSpec) {
                this._parent = parent;
                this._name = zoneSpec ? zoneSpec.name || 'unnamed' : '<root>';
                this._properties = zoneSpec && zoneSpec.properties || {};
                this._zoneDelegate =
                    new _ZoneDelegate(this, this._parent && this._parent._zoneDelegate, zoneSpec);
            }
            Zone.assertZonePatched = function () {
                if (global['Promise'] !== patches['ZoneAwarePromise']) {
                    throw new Error('Zone.js has detected that ZoneAwarePromise `(window|global).Promise` ' +
                        'has been overwritten.\n' +
                        'Most likely cause is that a Promise polyfill has been loaded ' +
                        'after Zone.js (Polyfilling Promise api is not necessary when zone.js is loaded. ' +
                        'If you must load one, do so before loading zone.js.)');
                }
            };
            Object.defineProperty(Zone, "root", {
                get: function () {
                    var zone = _a.current;
                    while (zone.parent) {
                        zone = zone.parent;
                    }
                    return zone;
                },
                enumerable: false,
                configurable: true
            });
            Object.defineProperty(Zone, "current", {
                get: function () {
                    return _currentZoneFrame.zone;
                },
                enumerable: false,
                configurable: true
            });
            Object.defineProperty(Zone, "currentTask", {
                get: function () {
                    return _currentTask;
                },
                enumerable: false,
                configurable: true
            });
            // tslint:disable-next-line:require-internal-with-underscore
            Zone.__load_patch = function (name, fn, ignoreDuplicate) {
                if (ignoreDuplicate === void 0) { 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]) {
                    var perfName = 'Zone:' + name;
                    mark(perfName);
                    patches[name] = fn(global, _a, _api);
                    performanceMeasure(perfName, perfName);
                }
            };
            Object.defineProperty(Zone.prototype, "parent", {
                get: function () {
                    return this._parent;
                },
                enumerable: false,
                configurable: true
            });
            Object.defineProperty(Zone.prototype, "name", {
                get: function () {
                    return this._name;
                },
                enumerable: false,
                configurable: true
            });
            Zone.prototype.get = function (key) {
                var zone = this.getZoneWith(key);
                if (zone)
                    return zone._properties[key];
            };
            Zone.prototype.getZoneWith = function (key) {
                var current = this;
                while (current) {
                    if (current._properties.hasOwnProperty(key)) {
                        return current;
                    }
                    current = current._parent;
                }
                return null;
            };
            Zone.prototype.fork = function (zoneSpec) {
                if (!zoneSpec)
                    throw new Error('ZoneSpec required!');
                return this._zoneDelegate.fork(this, zoneSpec);
            };
            Zone.prototype.wrap = function (callback, source) {
                if (typeof callback !== 'function') {
                    throw new Error('Expecting function got: ' + callback);
                }
                var _callback = this._zoneDelegate.intercept(this, callback, source);
                var zone = this;
                return function () {
                    return zone.runGuarded(_callback, this, arguments, source);
                };
            };
            Zone.prototype.run = function (callback, applyThis, applyArgs, source) {
                _currentZoneFrame = { parent: _currentZoneFrame, zone: this };
                try {
                    return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
                }
                finally {
                    _currentZoneFrame = _currentZoneFrame.parent;
                }
            };
            Zone.prototype.runGuarded = function (callback, applyThis, applyArgs, source) {
                if (applyThis === void 0) { applyThis = null; }
                _currentZoneFrame = { parent: _currentZoneFrame, zone: this };
                try {
                    try {
                        return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
                    }
                    catch (error) {
                        if (this._zoneDelegate.handleError(this, error)) {
                            throw error;
                        }
                    }
                }
                finally {
                    _currentZoneFrame = _currentZoneFrame.parent;
                }
            };
            Zone.prototype.runTask = function (task, applyThis, applyArgs) {
                if (task.zone != this) {
                    throw new Error('A task can only be run in the zone of creation! (Creation: ' +
                        (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');
                }
                // https://github.com/angular/zone.js/issues/778, sometimes eventTask
                // will run in notScheduled(canceled) state, we should not try to
                // run such kind of task but just return
                if (task.state === notScheduled && (task.type === eventTask || task.type === macroTask)) {
                    return;
                }
                var reEntryGuard = task.state != running;
                reEntryGuard && task._transitionTo(running, scheduled);
                task.runCount++;
                var previousTask = _currentTask;
                _currentTask = task;
                _currentZoneFrame = { parent: _currentZoneFrame, zone: this };
                try {
                    if (task.type == macroTask && task.data && !task.data.isPeriodic) {
                        task.cancelFn = undefined;
                    }
                    try {
                        return this._zoneDelegate.invokeTask(this, task, applyThis, applyArgs);
                    }
                    catch (error) {
                        if (this._zoneDelegate.handleError(this, error)) {
                            throw error;
                        }
                    }
                }
                finally {
                    // if the task's state is notScheduled or unknown, then it has already been cancelled
                    // we should not reset the state to scheduled
                    if (task.state !== notScheduled && task.state !== unknown) {
                        if (task.type == eventTask || (task.data && task.data.isPeriodic)) {
                            reEntryGuard && task._transitionTo(scheduled, running);
                        }
                        else {
                            task.runCount = 0;
                            this._updateTaskCount(task, -1);
                            reEntryGuard &&
                                task._transitionTo(notScheduled, running, notScheduled);
                        }
                    }
                    _currentZoneFrame = _currentZoneFrame.parent;
                    _currentTask = previousTask;
                }
            };
            Zone.prototype.scheduleTask = function (task) {
                if (task.zone && task.zone !== this) {
                    // check if the task was rescheduled, the newZone
                    // should not be the children of the original zone
                    var newZone = this;
                    while (newZone) {
                        if (newZone === task.zone) {
                            throw Error("can not reschedule task to ".concat(this.name, " which is descendants of the original zone ").concat(task.zone.name));
                        }
                        newZone = newZone.parent;
                    }
                }
                task._transitionTo(scheduling, notScheduled);
                var zoneDelegates = [];
                task._zoneDelegates = zoneDelegates;
                task._zone = this;
                try {
                    task = this._zoneDelegate.scheduleTask(this, task);
                }
                catch (err) {
                    // should set task's state to unknown when scheduleTask throw error
                    // because the err may from reschedule, so the fromState maybe notScheduled
                    task._transitionTo(unknown, scheduling, notScheduled);
                    // TODO: @JiaLiPassion, should we check the result from handleError?
                    this._zoneDelegate.handleError(this, err);
                    throw err;
                }
                if (task._zoneDelegates === zoneDelegates) {
                    // we have to check because internally the delegate can reschedule the task.
                    this._updateTaskCount(task, 1);
                }
                if (task.state == scheduling) {
                    task._transitionTo(scheduled, scheduling);
                }
                return task;
            };
            Zone.prototype.scheduleMicroTask = function (source, callback, data, customSchedule) {
                return this.scheduleTask(new ZoneTask(microTask, source, callback, data, customSchedule, undefined));
            };
            Zone.prototype.scheduleMacroTask = function (source, callback, data, customSchedule, customCancel) {
                return this.scheduleTask(new ZoneTask(macroTask, source, callback, data, customSchedule, customCancel));
            };
            Zone.prototype.scheduleEventTask = function (source, callback, data, customSchedule, customCancel) {
                return this.scheduleTask(new ZoneTask(eventTask, source, callback, data, customSchedule, customCancel));
            };
            Zone.prototype.cancelTask = function (task) {
                if (task.zone != this)
                    throw new Error('A task can only be cancelled in the zone of creation! (Creation: ' +
                        (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');
                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;
            };
            Zone.prototype._updateTaskCount = function (task, count) {
                var zoneDelegates = task._zoneDelegates;
                if (count == -1) {
                    task._zoneDelegates = null;
                }
                for (var i = 0; i < zoneDelegates.length; i++) {
                    zoneDelegates[i]._updateTaskCount(task.type, count);
                }
            };
            return Zone;
        }());
        _a = Zone;
        // tslint:disable-next-line:require-internal-with-underscore
        (function () {
            _a.__symbol__ = __symbol__;
        })();
        var DELEGATE_ZS = {
            name: '',
            onHasTask: function (delegate, _, target, hasTaskState) { return delegate.hasTask(target, hasTaskState); },
            onScheduleTask: function (delegate, _, target, task) { return delegate.scheduleTask(target, task); },
            onInvokeTask: function (delegate, _, target, task, applyThis, applyArgs) { return delegate.invokeTask(target, task, applyThis, applyArgs); },
            onCancelTask: function (delegate, _, target, task) { return delegate.cancelTask(target, task); }
        };
        var _ZoneDelegate = /** @class */ (function () {
            function _ZoneDelegate(zone, parentDelegate, zoneSpec) {
                this._taskCounts = { 'microTask': 0, 'macroTask': 0, 'eventTask': 0 };
                this.zone = zone;
                this._parentDelegate = parentDelegate;
                this._forkZS = zoneSpec && (zoneSpec && zoneSpec.onFork ? zoneSpec : parentDelegate._forkZS);
                this._forkDlgt = zoneSpec && (zoneSpec.onFork ? parentDelegate : parentDelegate._forkDlgt);
                this._forkCurrZone =
                    zoneSpec && (zoneSpec.onFork ? this.zone : parentDelegate._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;
                var zoneSpecHasTask = zoneSpec && zoneSpec.onHasTask;
                var parentHasTask = parentDelegate && parentDelegate._hasTaskZS;
                if (zoneSpecHasTask || parentHasTask) {
                    // If we need to report hasTask, than this ZS needs to do ref counting on tasks. In such
                    // a case all task related interceptors must go through this ZD. We can't short circuit it.
                    this._hasTaskZS = zoneSpecHasTask ? zoneSpec : DELEGATE_ZS;
                    this._hasTaskDlgt = parentDelegate;
                    this._hasTaskDlgtOwner = this;
                    this._hasTaskCurrZone = zone;
                    if (!zoneSpec.onScheduleTask) {
                        this._scheduleTaskZS = DELEGATE_ZS;
                        this._scheduleTaskDlgt = parentDelegate;
                        this._scheduleTaskCurrZone = this.zone;
                    }
                    if (!zoneSpec.onInvokeTask) {
                        this._invokeTaskZS = DELEGATE_ZS;
                        this._invokeTaskDlgt = parentDelegate;
                        this._invokeTaskCurrZone = this.zone;
                    }
                    if (!zoneSpec.onCancelTask) {
                        this._cancelTaskZS = DELEGATE_ZS;
                        this._cancelTaskDlgt = parentDelegate;
                        this._cancelTaskCurrZone = this.zone;
                    }
                }
            }
            _ZoneDelegate.prototype.fork = function (targetZone, zoneSpec) {
                return this._forkZS ? this._forkZS.onFork(this._forkDlgt, this.zone, targetZone, zoneSpec) :
                    new Zone(targetZone, zoneSpec);
            };
            _ZoneDelegate.prototype.intercept = function (targetZone, callback, source) {
                return this._interceptZS ?
                    this._interceptZS.onIntercept(this._interceptDlgt, this._interceptCurrZone, targetZone, callback, source) :
                    callback;
            };
            _ZoneDelegate.prototype.invoke = function (targetZone, callback, applyThis, applyArgs, source) {
                return this._invokeZS ? this._invokeZS.onInvoke(this._invokeDlgt, this._invokeCurrZone, targetZone, callback, applyThis, applyArgs, source) :
                    callback.apply(applyThis, applyArgs);
            };
            _ZoneDelegate.prototype.handleError = function (targetZone, error) {
                return this._handleErrorZS ?
                    this._handleErrorZS.onHandleError(this._handleErrorDlgt, this._handleErrorCurrZone, targetZone, error) :
                    true;
            };
            _ZoneDelegate.prototype.scheduleTask = function (targetZone, task) {
                var returnTask = task;
                if (this._scheduleTaskZS) {
                    if (this._hasTaskZS) {
                        returnTask._zoneDelegates.push(this._hasTaskDlgtOwner);
                    }
                    // 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;
            };
            _ZoneDelegate.prototype.invokeTask = function (targetZone, task, applyThis, applyArgs) {
                return this._invokeTaskZS ? this._invokeTaskZS.onInvokeTask(this._invokeTaskDlgt, this._invokeTaskCurrZone, targetZone, task, applyThis, applyArgs) :
                    task.callback.apply(applyThis, applyArgs);
            };
            _ZoneDelegate.prototype.cancelTask = function (targetZone, task) {
                var value;
                if (this._cancelTaskZS) {
                    value = this._cancelTaskZS.onCancelTask(this._cancelTaskDlgt, this._cancelTaskCurrZone, targetZone, task);
                }
                else {
                    if (!task.cancelFn) {
                        throw Error('Task is not cancelable');
                    }
                    value = task.cancelFn(task);
                }
                return value;
            };
            _ZoneDelegate.prototype.hasTask = function (targetZone, isEmpty) {
                // hasTask should not throw error so other ZoneDelegate
                // can still trigger hasTask callback
                try {
                    this._hasTaskZS &&
                        this._hasTaskZS.onHasTask(this._hasTaskDlgt, this._hasTaskCurrZone, targetZone, isEmpty);
                }
                catch (err) {
                    this.handleError(targetZone, err);
                }
            };
            // tslint:disable-next-line:require-internal-with-underscore
            _ZoneDelegate.prototype._updateTaskCount = function (type, count) {
                var counts = this._taskCounts;
                var prev = counts[type];
                var next = counts[type] = prev + count;
                if (next < 0) {
                    throw new Error('More tasks executed then were scheduled.');
                }
                if (prev == 0 || next == 0) {
                    var isEmpty = {
                        microTask: counts['microTask'] > 0,
                        macroTask: counts['macroTask'] > 0,
                        eventTask: counts['eventTask'] > 0,
                        change: type
                    };
                    this.hasTask(this.zone, isEmpty);
                }
            };
            return _ZoneDelegate;
        }());
        var ZoneTask = /** @class */ (function () {
            function ZoneTask(type, source, callback, options, scheduleFn, cancelFn) {
                // 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;
                var self = this;
                // TODO: @JiaLiPassion options should have interface
                if (type === eventTask && options && options.useG) {
                    this.invoke = ZoneTask.invokeTask;
                }
                else {
                    this.invoke = function () {
                        return ZoneTask.invokeTask.call(global, self, this, arguments);
                    };
                }
            }
            ZoneTask.invokeTask = function (task, target, args) {
                if (!task) {
                    task = this;
                }
                _numberOfNestedTaskFrames++;
                try {
                    task.runCount++;
                    return task.zone.runTask(task, target, args);
                }
                finally {
                    if (_numberOfNestedTaskFrames == 1) {
                        drainMicroTaskQueue();
                    }
                    _numberOfNestedTaskFrames--;
                }
            };
            Object.defineProperty(ZoneTask.prototype, "zone", {
                get: function () {
                    return this._zone;
                },
                enumerable: false,
                configurable: true
            });
            Object.defineProperty(ZoneTask.prototype, "state", {
                get: function () {
                    return this._state;
                },
                enumerable: false,
                configurable: true
            });
            ZoneTask.prototype.cancelScheduleRequest = function () {
                this._transitionTo(notScheduled, scheduling);
            };
            // tslint:disable-next-line:require-internal-with-underscore
            ZoneTask.prototype._transitionTo = function (toState, fromState1, fromState2) {
                if (this._state === fromState1 || this._state === fromState2) {
                    this._state = toState;
                    if (toState == notScheduled) {
                        this._zoneDelegates = null;
                    }
                }
                else {
                    throw new Error("".concat(this.type, " '").concat(this.source, "': can not transition to '").concat(toState, "', expecting state '").concat(fromState1, "'").concat(fromState2 ? ' or \'' + fromState2 + '\'' : '', ", was '").concat(this._state, "'."));
                }
            };
            ZoneTask.prototype.toString = function () {
                if (this.data && typeof this.data.handleId !== 'undefined') {
                    return this.data.handleId.toString();
                }
                else {
                    return Object.prototype.toString.call(this);
                }
            };
            // add toJSON method to prevent cyclic error when
            // call JSON.stringify(zoneTask)
            ZoneTask.prototype.toJSON = function () {
                return {
                    type: this.type,
                    state: this.state,
                    source: this.source,
                    zone: this.zone.name,
                    runCount: this.runCount
                };
            };
            return ZoneTask;
        }());
        //////////////////////////////////////////////////////
        //////////////////////////////////////////////////////
        ///  MICROTASK QUEUE
        //////////////////////////////////////////////////////
        //////////////////////////////////////////////////////
        var symbolSetTimeout = __symbol__('setTimeout');
        var symbolPromise = __symbol__('Promise');
        var symbolThen = __symbol__('then');
        var _microTaskQueue = [];
        var _isDrainingMicrotaskQueue = false;
        var nativeMicroTaskQueuePromise;
        function nativeScheduleMicroTask(func) {
            if (!nativeMicroTaskQueuePromise) {
                if (global[symbolPromise]) {
                    nativeMicroTaskQueuePromise = global[symbolPromise].resolve(0);
                }
            }
            if (nativeMicroTaskQueuePromise) {
                var nativeThen = nativeMicroTaskQueuePromise[symbolThen];
                if (!nativeThen) {
                    // native Promise is not patchable, we need to use `then` directly
                    // issue 1078
                    nativeThen = nativeMicroTaskQueuePromise['then'];
                }
                nativeThen.call(nativeMicroTaskQueuePromise, 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) {
                    var queue = _microTaskQueue;
                    _microTaskQueue = [];
                    for (var i = 0; i < queue.length; i++) {
                        var task = queue[i];
                        try {
                            task.zone.runTask(task, null, null);
                        }
                        catch (error) {
                            _api.onUnhandledError(error);
                        }
                    }
                }
                _api.microtaskDrainDone();
                _isDrainingMicrotaskQueue = false;
            }
        }
        //////////////////////////////////////////////////////
        //////////////////////////////////////////////////////
        ///  BOOTSTRAP
        //////////////////////////////////////////////////////
        //////////////////////////////////////////////////////
        var NO_ZONE = { name: 'NO ZONE' };
        var notScheduled = 'notScheduled', scheduling = 'scheduling', scheduled = 'scheduled', running = 'running', canceling = 'canceling', unknown = 'unknown';
        var microTask = 'microTask', macroTask = 'macroTask', eventTask = 'eventTask';
        var patches = {};
        var _api = {
            symbol: __symbol__,
            currentZoneFrame: function () { return _currentZoneFrame; },
            onUnhandledError: noop,
            microtaskDrainDone: noop,
            scheduleMicroTask: scheduleMicroTask,
            showUncaughtError: function () { return !Zone[__symbol__('ignoreConsoleErrorUncaughtError')]; },
            patchEventTarget: function () { return []; },
            patchOnProperties: noop,
            patchMethod: function () { return noop; },
            bindArguments: function () { return []; },
            patchThen: function () { return noop; },
            patchMacroTask: function () { return noop; },
            patchEventPrototype: function () { return noop; },
            isIEOrEdge: function () { return false; },
            getGlobalObjects: function () { return undefined; },
            ObjectDefineProperty: function () { return noop; },
            ObjectGetOwnPropertyDescriptor: function () { return undefined; },
            ObjectCreate: function () { return undefined; },
            ArraySlice: function () { return []; },
            patchClass: function () { return noop; },
            wrapWithCurrentZone: function () { return noop; },
            filterProperties: function () { return []; },
            attachOriginToPatched: function () { return noop; },
            _redefineProperty: function () { return noop; },
            patchCallbacks: function () { return noop; },
            nativeScheduleMicroTask: nativeScheduleMicroTask
        };
        var _currentZoneFrame = { parent: null, zone: new Zone(null, null) };
        var _currentTask = null;
        var _numberOfNestedTaskFrames = 0;
        function noop() { }
        performanceMeasure('Zone', 'Zone');
        return global['Zone'] = Zone;
    }))(typeof window !== 'undefined' && window || typeof self !== 'undefined' && self || global);
    /**
     * 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 */
    var ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
    /** Object.defineProperty */
    var ObjectDefineProperty = Object.defineProperty;
    /** Object.getPrototypeOf */
    var ObjectGetPrototypeOf = Object.getPrototypeOf;
    /** Object.create */
    var ObjectCreate = Object.create;
    /** Array.prototype.slice */
    var ArraySlice = Array.prototype.slice;
    /** addEventListener string const */
    var ADD_EVENT_LISTENER_STR = 'addEventListener';
    /** removeEventListener string const */
    var REMOVE_EVENT_LISTENER_STR = 'removeEventListener';
    /** zoneSymbol addEventListener */
    var ZONE_SYMBOL_ADD_EVENT_LISTENER = Zone.__symbol__(ADD_EVENT_LISTENER_STR);
    /** zoneSymbol removeEventListener */
    var ZONE_SYMBOL_REMOVE_EVENT_LISTENER = Zone.__symbol__(REMOVE_EVENT_LISTENER_STR);
    /** true string const */
    var TRUE_STR = 'true';
    /** false string const */
    var FALSE_STR = 'false';
    /** Zone symbol prefix string const. */
    var 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);
    }
    var zoneSymbol = Zone.__symbol__;
    var isWindowExists = typeof window !== 'undefined';
    var internalWindow = isWindowExists ? window : undefined;
    var _global = isWindowExists && internalWindow || typeof self === 'object' && self || global;
    var REMOVE_ATTRIBUTE = 'removeAttribute';
    function bindArguments(args, source) {
        for (var i = args.length - 1; i >= 0; i--) {
            if (typeof args[i] === 'function') {
                args[i] = wrapWithCurrentZone(args[i], source + '_' + i);
            }
        }
        return args;
    }
    function patchPrototype(prototype, fnNames) {
        var source = prototype.constructor['name'];
        var _loop_1 = function (i) {
            var name_1 = fnNames[i];
            var delegate = prototype[name_1];
            if (delegate) {
                var prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, name_1);
                if (!isPropertyWritable(prototypeDesc)) {
                    return "continue";
                }
                prototype[name_1] = (function (delegate) {
                    var patched = function () {
                        return delegate.apply(this, bindArguments(arguments, source + '.' + name_1));
                    };
                    attachOriginToPatched(patched, delegate);
                    return patched;
                })(delegate);
            }
        };
        for (var i = 0; i < fnNames.length; i++) {
            _loop_1(i);
        }
    }
    function isPropertyWritable(propertyDesc) {
        if (!propertyDesc) {
            return true;
        }
        if (propertyDesc.writable === false) {
            return false;
        }
        return !(typeof propertyDesc.get === 'function' && typeof propertyDesc.set === 'undefined');
    }
    var isWebWorker = (typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope);
    // Make sure to access `process` through `_global` so that WebPack does not accidentally browserify
    // this code.
    var isNode = (!('nw' in _global) && typeof _global.process !== 'undefined' &&
        {}.toString.call(_global.process) === '[object process]');
    var 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.
    var isMix = typeof _global.process !== 'undefined' &&
        {}.toString.call(_global.process) === '[object process]' && !isWebWorker &&
        !!(isWindowExists && internalWindow['HTMLElement']);
    var zoneSymbolEventNames$1 = {};
    var 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;
        }
        var eventNameSymbol = zoneSymbolEventNames$1[event.type];
        if (!eventNameSymbol) {
            eventNameSymbol = zoneSymbolEventNames$1[event.type] = zoneSymbol('ON_PROPERTY' + event.type);
        }
        var target = this || event.target || _global;
        var listener = target[eventNameSymbol];
        var 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
            var 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) {
        var desc = ObjectGetOwnPropertyDescriptor(obj, prop);
        if (!desc && prototype) {
            // when patch window object, use prototype to check prop exist or not
            var 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;
        }
        var 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;
        var originalDescGet = desc.get;
        var originalDescSet = desc.set;
        // slice(2) cuz 'onclick' -> 'click', etc
        var eventName = prop.slice(2);
        var 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
            var target = this;
            if (!target && obj === _global) {
                target = _global;
            }
            if (!target) {
                return;
            }
            var 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
            var target = this;
            if (!target && obj === _global) {
                target = _global;
            }
            if (!target) {
                return null;
            }
            var 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
                var 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 (var i = 0; i < properties.length; i++) {
                patchProperty(obj, 'on' + properties[i], prototype);
            }
        }
        else {
            var onProperties = [];
            for (var prop in obj) {
                if (prop.slice(0, 2) == 'on') {
                    onProperties.push(prop);
                }
            }
            for (var j = 0; j < onProperties.length; j++) {
                patchProperty(obj, onProperties[j], prototype);
            }
        }
    }
    var originalInstanceKey = zoneSymbol('originalInstance');
    // wrap some native API on `window`
    function patchClass(className) {
        var OriginalClass = _global[className];
        if (!OriginalClass)
            return;
        // keep original class in global
        _global[zoneSymbol(className)] = OriginalClass;
        _global[className] = function () {
            var a = bindArguments(arguments, className);
            switch (a.length) {
                case 0:
                    this[originalInstanceKey] = new OriginalClass();
                    break;
                case 1:
                    this[originalInstanceKey] = new OriginalClass(a[0]);
                    break;
                case 2:
                    this[originalInstanceKey] = new OriginalClass(a[0], a[1]);
                    break;
                case 3:
                    this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2]);
                    break;
                case 4:
                    this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2], a[3]);
                    break;
                default:
                    throw new Error('Arg list too long.');
            }
        };
        // attach original delegate to patched function
        attachOriginToPatched(_global[className], OriginalClass);
        var instance = new OriginalClass(function () { });
        var prop;
        for (prop in instance) {
            // https://bugs.webkit.org/show_bug.cgi?id=44721
            if (className === 'XMLHttpRequest' && prop === 'responseBlob')
                continue;
            (function (prop) {
                if (typeof instance[prop] === 'function') {
                    _global[className].prototype[prop] = function () {
                        return this[originalInstanceKey][prop].apply(this[originalInstanceKey], arguments);
                    };
                }
                else {
                    ObjectDefineProperty(_global[className].prototype, prop, {
                        set: function (fn) {
                            if (typeof fn === 'function') {
                                this[originalInstanceKey][prop] = wrapWithCurrentZone(fn, className + '.' + prop);
                                // keep callback in wrapped function so we can
                                // use it in Function.prototype.toString to return
                                // the native one.
                                attachOriginToPatched(this[originalInstanceKey][prop], fn);
                            }
                            else {
                                this[originalInstanceKey][prop] = fn;
                            }
                        },
                        get: function () {
                            return this[originalInstanceKey][prop];
                        }
                    });
                }
            }(prop));
        }
        for (prop in OriginalClass) {
            if (prop !== 'prototype' && OriginalClass.hasOwnProperty(prop)) {
                _global[className][prop] = OriginalClass[prop];
            }
        }
    }
    function patchMethod(target, name, patchFn) {
        var 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;
        }
        var delegateName = zoneSymbol(name);
        var 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
            var desc = proto && ObjectGetOwnPropertyDescriptor(proto, name);
            if (isPropertyWritable(desc)) {
                var patchDelegate_1 = patchFn(delegate, delegateName, name);
                proto[name] = function () {
                    return patchDelegate_1(this, arguments);
                };
                attachOriginToPatched(proto[name], delegate);
            }
        }
        return delegate;
    }
    // TODO: @JiaLiPassion, support cancel task later if necessary
    function patchMacroTask(obj, funcName, metaCreator) {
        var setNative = null;
        function scheduleTask(task) {
            var 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, function (delegate) { return function (self, args) {
            var 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 attachOriginToPatched(patched, original) {
        patched[zoneSymbol('OriginalDelegate')] = original;
    }
    var isDetectedIEOrEdge = false;
    var ieOrEdge = false;
    function isIE() {
        try {
            var ua = internalWindow.navigator.userAgent;
            if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1) {
                return true;
            }
        }
        catch (error) {
        }
        return false;
    }
    function isIEOrEdge() {
        if (isDetectedIEOrEdge) {
            return ieOrEdge;
        }
        isDetectedIEOrEdge = true;
        try {
            var ua = internalWindow.navigator.userAgent;
            if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1 || ua.indexOf('Edge/') !== -1) {
                ieOrEdge = true;
            }
        }
        catch (error) {
        }
        return ieOrEdge;
    }
    Zone.__load_patch('ZoneAwarePromise', function (global, Zone, api) {
        var ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
        var ObjectDefineProperty = Object.defineProperty;
        function readableObjectToString(obj) {
            if (obj && obj.toString === Object.prototype.toString) {
                var className = obj.constructor && obj.constructor.name;
                return (className ? className : '') + ': ' + JSON.stringify(obj);
            }
            return obj ? obj.toString() : Object.prototype.toString.call(obj);
        }
        var __symbol__ = api.symbol;
        var _uncaughtPromiseErrors = [];
        var isDisableWrappingUncaughtPromiseRejection = global[__symbol__('DISABLE_WRAPPING_UNCAUGHT_PROMISE_REJECTION')] === true;
        var symbolPromise = __symbol__('Promise');
        var symbolThen = __symbol__('then');
        var creationTrace = '__creationTrace__';
        api.onUnhandledError = function (e) {
            if (api.showUncaughtError()) {
                var rejection = e && e.rejection;
                if (rejection) {
                    console.error('Unhandled Promise rejection:', rejection instanceof Error ? rejection.message : rejection, '; Zone:', e.zone.name, '; Task:', e.task && e.task.source, '; Value:', rejection, rejection instanceof Error ? rejection.stack : undefined);
                }
                else {
                    console.error(e);
                }
            }
        };
        api.microtaskDrainDone = function () {
            var _loop_2 = function () {
                var uncaughtPromiseError = _uncaughtPromiseErrors.shift();
                try {
                    uncaughtPromiseError.zone.runGuarded(function () {
                        if (uncaughtPromiseError.throwOriginal) {
                            throw uncaughtPromiseError.rejection;
                        }
                        throw uncaughtPromiseError;
                    });
                }
                catch (error) {
                    handleUnhandledRejection(error);
                }
            };
            while (_uncaughtPromiseErrors.length) {
                _loop_2();
            }
        };
        var UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL = __symbol__('unhandledPromiseRejectionHandler');
        function handleUnhandledRejection(e) {
            api.onUnhandledError(e);
            try {
                var 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);
        }
        var symbolState = __symbol__('state');
        var symbolValue = __symbol__('value');
        var symbolFinally = __symbol__('finally');
        var symbolParentPromiseValue = __symbol__('parentPromiseValue');
        var symbolParentPromiseState = __symbol__('parentPromiseState');
        var source = 'Promise.then';
        var UNRESOLVED = null;
        var RESOLVED = true;
        var REJECTED = false;
        var REJECTED_NO_CATCH = 0;
        function makeResolver(promise, state) {
            return function (v) {
                try {
                    resolvePromise(promise, state, v);
                }
                catch (err) {
                    resolvePromise(promise, false, err);
                }
                // Do not return value or you will break the Promise spec.
            };
        }
        var once = function () {
            var wasCalled = false;
            return function wrapper(wrappedFunction) {
                return function () {
                    if (wasCalled) {
                        return;
                    }
                    wasCalled = true;
                    wrappedFunction.apply(null, arguments);
                };
            };
        };
        var TYPE_ERROR = 'Promise resolved with itself';
        var CURRENT_TASK_TRACE_SYMBOL = __symbol__('currentTaskTrace');
        // Promise Resolution
        function resolvePromise(promise, state, value) {
            var onceWrapper = once();
            if (promise === value) {
                throw new TypeError(TYPE_ERROR);
            }
            if (promise[symbolState] === UNRESOLVED) {
                // should only get value.then once based on promise spec.
                var then = null;
                try {
                    if (typeof value === 'object' || typeof value === 'function') {
                        then = value && value.then;
                    }
                }
                catch (err) {
                    onceWrapper(function () {
                        resolvePromise(promise, false, err);
                    })();
                    return promise;
                }
                // if (value instanceof ZoneAwarePromise) {
                if (state !== REJECTED && value instanceof ZoneAwarePromise &&
                    value.hasOwnProperty(symbolState) && value.hasOwnProperty(symbolValue) &&
                    value[symbolState] !== UNRESOLVED) {
                    clearRejectedNoCatch(value);
                    resolvePromise(promise, value[symbolState], value[symbolValue]);
                }
                else if (state !== REJECTED && typeof then === 'function') {
                    try {
                        then.call(value, onceWrapper(makeResolver(promise, state)), onceWrapper(makeResolver(promise, false)));
                    }
                    catch (err) {
                        onceWrapper(function () {
                            resolvePromise(promise, false, err);
                        })();
                    }
                }
                else {
                    promise[symbolState] = state;
                    var queue = promise[symbolValue];
                    promise[symbolValue] = value;
                    if (promise[symbolFinally] === symbolFinally) {
                        // the promise is generated by Promise.prototype.finally
                        if (state === RESOLVED) {
                            // the state is resolved, should ignore the value
                            // and use parent promise value
                            promise[symbolState] = promise[symbolParentPromiseState];
                            promise[symbolValue] = promise[symbolParentPromiseValue];
                        }
                    }
                    // record task information in value when error occurs, so we can
                    // do some additional work such as render longStackTrace
                    if (state === REJECTED && value instanceof Error) {
                        // check if longStackTraceZone is here
                        var trace = Zone.currentTask && Zone.currentTask.data &&
                            Zone.currentTask.data[creationTrace];
                        if (trace) {
                            // only keep the long stack trace into error when in longStackTraceZone
                            ObjectDefineProperty(value, CURRENT_TASK_TRACE_SYMBOL, { configurable: true, enumerable: false, writable: true, value: trace });
                        }
                    }
                    for (var i = 0; i < queue.length;) {
                        scheduleResolveOrReject(promise, queue[i++], queue[i++], queue[i++], queue[i++]);
                    }
                    if (queue.length == 0 && state == REJECTED) {
                        promise[symbolState] = REJECTED_NO_CATCH;
                        var 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;
        }
        var REJECTION_HANDLED_HANDLER = __symbol__('rejectionHandledHandler');
        function clearRejectedNoCatch(promise) {
            if (promise[symbolState] === REJECTED_NO_CATCH) {
                // if the promise is rejected no catch status
                // and queue.length > 0, means there is a error handler
                // here to handle the rejected promise, we should trigger
                // windows.rejectionhandled eventHandler or nodejs rejectionHandled
                // eventHandler
                try {
                    var handler = Zone[REJECTION_HANDLED_HANDLER];
                    if (handler && typeof handler === 'function') {
                        handler.call(this, { rejection: promise[symbolValue], promise: promise });
                    }
                }
                catch (err) {
                }
                promise[symbolState] = REJECTED;
                for (var i = 0; i < _uncaughtPromiseErrors.length; i++) {
                    if (promise === _uncaughtPromiseErrors[i].promise) {
                        _uncaughtPromiseErrors.splice(i, 1);
                    }
                }
            }
        }
        function scheduleResolveOrReject(promise, zone, chainPromise, onFulfilled, onRejected) {
            clearRejectedNoCatch(promise);
            var promiseState = promise[symbolState];
            var delegate = promiseState ?
                (typeof onFulfilled === 'function') ? onFulfilled : forwardResolution :
                (typeof onRejected === 'function') ? onRejected :
                    forwardRejection;
            zone.scheduleMicroTask(source, function () {
                try {
                    var parentPromiseValue = promise[symbolValue];
                    var isFinallyPromise = !!chainPromise && symbolFinally === chainPromise[symbolFinally];
                    if (isFinallyPromise) {
                        // if the promise is generated from finally call, keep parent promise's state and value
                        chainPromise[symbolParentPromiseValue] = parentPromiseValue;
                        chainPromise[symbolParentPromiseState] = promiseState;
                    }
                    // should not pass value to finally callback
                    var value = zone.run(delegate, undefined, isFinallyPromise && delegate !== forwardRejection && delegate !== forwardResolution ?
                        [] :
                        [parentPromiseValue]);
                    resolvePromise(chainPromise, true, value);
                }
                catch (error) {
                    // if error occurs, should always return this error
                    resolvePromise(chainPromise, false, error);
                }
            }, chainPromise);
        }
        var ZONE_AWARE_PROMISE_TO_STRING = 'function ZoneAwarePromise() { [native code] }';
        var noop = function () { };
        var AggregateError = global.AggregateError;
        var ZoneAwarePromise = /** @class */ (function () {
            function ZoneAwarePromise(executor) {
                var promise = this;
                if (!(promise instanceof ZoneAwarePromise)) {
                    throw new Error('Must be an instanceof Promise.');
                }
                promise[symbolState] = UNRESOLVED;
                promise[symbolValue] = []; // queue;
                try {
                    var onceWrapper = once();
                    executor &&
                        executor(onceWrapper(makeResolver(promise, RESOLVED)), onceWrapper(makeResolver(promise, REJECTED)));
                }
                catch (error) {
                    resolvePromise(promise, false, error);
                }
            }
            ZoneAwarePromise.toString = function () {
                return ZONE_AWARE_PROMISE_TO_STRING;
            };
            ZoneAwarePromise.resolve = function (value) {
                return resolvePromise(new this(null), RESOLVED, value);
            };
            ZoneAwarePromise.reject = function (error) {
                return resolvePromise(new this(null), REJECTED, error);
            };
            ZoneAwarePromise.any = function (values) {
                if (!values || typeof values[Symbol.iterator] !== 'function') {
                    return Promise.reject(new AggregateError([], 'All promises were rejected'));
                }
                var promises = [];
                var count = 0;
                try {
                    for (var _i = 0, values_1 = values; _i < values_1.length; _i++) {
                        var v = values_1[_i];
                        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'));
                }
                var finished = false;
                var errors = [];
                return new ZoneAwarePromise(function (resolve, reject) {
                    for (var i = 0; i < promises.length; i++) {
                        promises[i].then(function (v) {
                            if (finished) {
                                return;
                            }
                            finished = true;
                            resolve(v);
                        }, function (err) {
                            errors.push(err);
                            count--;
                            if (count === 0) {
                                finished = true;
                                reject(new AggregateError(errors, 'All promises were rejected'));
                            }
                        });
                    }
                });
            };
            ;
            ZoneAwarePromise.race = function (values) {
                var resolve;
                var reject;
                var promise = new this(function (res, rej) {
                    resolve = res;
                    reject = rej;
                });
                function onResolve(value) {
                    resolve(value);
                }
                function onReject(error) {
                    reject(error);
                }
                for (var _i = 0, values_2 = values; _i < values_2.length; _i++) {
                    var value = values_2[_i];
                    if (!isThenable(value)) {
                        value = this.resolve(value);
                    }
                    value.then(onResolve, onReject);
                }
                return promise;
            };
            ZoneAwarePromise.all = function (values) {
                return ZoneAwarePromise.allWithCallback(values);
            };
            ZoneAwarePromise.allSettled = function (values) {
                var P = this && this.prototype instanceof ZoneAwarePromise ? this : ZoneAwarePromise;
                return P.allWithCallback(values, {
                    thenCallback: function (value) { return ({ status: 'fulfilled', value: value }); },
                    errorCallback: function (err) { return ({ status: 'rejected', reason: err }); }
                });
            };
            ZoneAwarePromise.allWithCallback = function (values, callback) {
                var resolve;
                var reject;
                var promise = new this(function (res, rej) {
                    resolve = res;
                    reject = rej;
                });
                // Start at 2 to prevent prematurely resolving if .then is called immediately.
                var unresolvedCount = 2;
                var valueIndex = 0;
                var resolvedValues = [];
                var _loop_3 = function (value) {
                    if (!isThenable(value)) {
                        value = this_1.resolve(value);
                    }
                    var curValueIndex = valueIndex;
                    try {
                        value.then(function (value) {
                            resolvedValues[curValueIndex] = callback ? callback.thenCallback(value) : value;
                            unresolvedCount--;
                            if (unresolvedCount === 0) {
                                resolve(resolvedValues);
                            }
                        }, function (err) {
                            if (!callback) {
                                reject(err);
                            }
                            else {
                                resolvedValues[curValueIndex] = callback.errorCallback(err);
                                unresolvedCount--;
                                if (unresolvedCount === 0) {
                                    resolve(resolvedValues);
                                }
                            }
                        });
                    }
                    catch (thenErr) {
                        reject(thenErr);
                    }
                    unresolvedCount++;
                    valueIndex++;
                };
                var this_1 = this;
                for (var _i = 0, values_3 = values; _i < values_3.length; _i++) {
                    var value = values_3[_i];
                    _loop_3(value);
                }
                // Make the unresolvedCount zero-based again.
                unresolvedCount -= 2;
                if (unresolvedCount === 0) {
                    resolve(resolvedValues);
                }
                return promise;
            };
            Object.defineProperty(ZoneAwarePromise.prototype, Symbol.toStringTag, {
                get: function () {
                    return 'Promise';
                },
                enumerable: false,
                configurable: true
            });
            Object.defineProperty(ZoneAwarePromise.prototype, Symbol.species, {
                get: function () {
                    return ZoneAwarePromise;
                },
                enumerable: false,
                configurable: true
            });
            ZoneAwarePromise.prototype.then = function (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)')`.
                var C = (_a = this.constructor) === null || _a === void 0 ? void 0 : _a[Symbol.species];
                if (!C || typeof C !== 'function') {
                    C = this.constructor || ZoneAwarePromise;
                }
                var chainPromise = new C(noop);
                var zone = Zone.current;
                if (this[symbolState] == UNRESOLVED) {
                    this[symbolValue].push(zone, chainPromise, onFulfilled, onRejected);
                }
                else {
                    scheduleResolveOrReject(this, zone, chainPromise, onFulfilled, onRejected);
                }
                return chainPromise;
            };
            ZoneAwarePromise.prototype.catch = function (onRejected) {
                return this.then(null, onRejected);
            };
            ZoneAwarePromise.prototype.finally = function (onFinally) {
                var _a;
                // See comment on the call to `then` about why thee `Symbol.species` is safely accessed.
                var C = (_a = this.constructor) === null || _a === void 0 ? void 0 : _a[Symbol.species];
                if (!C || typeof C !== 'function') {
                    C = ZoneAwarePromise;
                }
                var chainPromise = new C(noop);
                chainPromise[symbolFinally] = symbolFinally;
                var zone = Zone.current;
                if (this[symbolState] == UNRESOLVED) {
                    this[symbolValue].push(zone, chainPromise, onFinally, onFinally);
                }
                else {
                    scheduleResolveOrReject(this, zone, chainPromise, onFinally, onFinally);
                }
                return chainPromise;
            };
            return ZoneAwarePromise;
        }());
        // 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;
        var NativePromise = global[symbolPromise] = global['Promise'];
        global['Promise'] = ZoneAwarePromise;
        var symbolThenPatched = __symbol__('thenPatched');
        function patchThen(Ctor) {
            var proto = Ctor.prototype;
            var 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;
            }
            var originalThen = proto.then;
            // Keep a reference to the original method.
            proto[symbolThen] = originalThen;
            Ctor.prototype.then = function (onResolve, onReject) {
                var _this = this;
                var wrapped = new ZoneAwarePromise(function (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) {
                var resultPromise = fn.apply(self, args);
                if (resultPromise instanceof ZoneAwarePromise) {
                    return resultPromise;
                }
                var ctor = resultPromise.constructor;
                if (!ctor[symbolThenPatched]) {
                    patchThen(ctor);
                }
                return resultPromise;
            };
        }
        if (NativePromise) {
            patchThen(NativePromise);
            patchMethod(global, 'fetch', function (delegate) { return 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;
    });
    // override Function.prototype.toString to make zone.js patched function
    // look like native function
    Zone.__load_patch('toString', function (global) {
        // patch Func.prototype.toString to let them look like native
        var originalFunctionToString = Function.prototype.toString;
        var ORIGINAL_DELEGATE_SYMBOL = zoneSymbol('OriginalDelegate');
        var PROMISE_SYMBOL = zoneSymbol('Promise');
        var ERROR_SYMBOL = zoneSymbol('Error');
        var newFunctionToString = function toString() {
            if (typeof this === 'function') {
                var 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) {
                    var nativePromise = global[PROMISE_SYMBOL];
                    if (nativePromise) {
                        return originalFunctionToString.call(nativePromise);
                    }
                }
                if (this === Error) {
                    var 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
        var originalObjectToString = Object.prototype.toString;
        var 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);
        };
    });
    /**
     * @fileoverview
     * @suppress {missingRequire}
     */
    var passiveSupported = false;
    if (typeof window !== 'undefined') {
        try {
            var 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
    var OPTIMIZED_ZONE_EVENT_TASK_DATA = {
        useG: true
    };
    var zoneSymbolEventNames = {};
    var globalSources = {};
    var EVENT_NAME_SYMBOL_REGX = new RegExp('^' + ZONE_SYMBOL_PREFIX + '(\\w+)(true|false)$');
    var IMMEDIATE_PROPAGATION_SYMBOL = zoneSymbol('propagationStopped');
    function prepareEventNames(eventName, eventNameToString) {
        var falseEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + FALSE_STR;
        var trueEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + TRUE_STR;
        var symbol = ZONE_SYMBOL_PREFIX + falseEventName;
        var symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;
        zoneSymbolEventNames[eventName] = {};
        zoneSymbolEventNames[eventName][FALSE_STR] = symbol;
        zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;
    }
    function patchEventTarget(_global, api, apis, patchOptions) {
        var ADD_EVENT_LISTENER = (patchOptions && patchOptions.add) || ADD_EVENT_LISTENER_STR;
        var REMOVE_EVENT_LISTENER = (patchOptions && patchOptions.rm) || REMOVE_EVENT_LISTENER_STR;
        var LISTENERS_EVENT_LISTENER = (patchOptions && patchOptions.listeners) || 'eventListeners';
        var REMOVE_ALL_LISTENERS_EVENT_LISTENER = (patchOptions && patchOptions.rmAll) || 'removeAllListeners';
        var zoneSymbolAddEventListener = zoneSymbol(ADD_EVENT_LISTENER);
        var ADD_EVENT_LISTENER_SOURCE = '.' + ADD_EVENT_LISTENER + ':';
        var PREPEND_EVENT_LISTENER = 'prependListener';
        var PREPEND_EVENT_LISTENER_SOURCE = '.' + PREPEND_EVENT_LISTENER + ':';
        var invokeTask = function (task, target, event) {
            // for better performance, check isRemoved which is set
            // by removeEventListener
            if (task.isRemoved) {
                return;
            }
            var delegate = task.callback;
            if (typeof delegate === 'object' && delegate.handleEvent) {
                // create the bind version of handleEvent when invoke
                task.callback = function (event) { return 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.
            var error;
            try {
                task.invoke(task, target, [event]);
            }
            catch (err) {
                error = err;
            }
            var 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
                var delegate_1 = task.originalDelegate ? task.originalDelegate : task.callback;
                target[REMOVE_EVENT_LISTENER].call(target, event.type, delegate_1, 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
            var target = context || event.target || _global;
            var tasks = target[zoneSymbolEventNames[event.type][isCapture ? TRUE_STR : FALSE_STR]];
            if (tasks) {
                var 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) {
                    var 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
                    var copyTasks = tasks.slice();
                    for (var i = 0; i < copyTasks.length; i++) {
                        if (event && event[IMMEDIATE_PROPAGATION_SYMBOL] === true) {
                            break;
                        }
                        var 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 {
                    var _loop_4 = function (i) {
                        var err = errors[i];
                        api.nativeScheduleMicroTask(function () {
                            throw err;
                        });
                    };
                    for (var i = 0; i < errors.length; i++) {
                        _loop_4(i);
                    }
                }
            }
        }
        // global shared zoneAwareCallback to handle all event callback with capture = false
        var globalZoneAwareCallback = function (event) {
            return globalCallback(this, event, false);
        };
        // global shared zoneAwareCallback to handle all event callback with capture = true
        var globalZoneAwareCaptureCallback = function (event) {
            return globalCallback(this, event, true);
        };
        function patchEventTargetMethods(obj, patchOptions) {
            if (!obj) {
                return false;
            }
            var useGlobalCallback = true;
            if (patchOptions && patchOptions.useG !== undefined) {
                useGlobalCallback = patchOptions.useG;
            }
            var validateHandler = patchOptions && patchOptions.vh;
            var checkDuplicate = true;
            if (patchOptions && patchOptions.chkDup !== undefined) {
                checkDuplicate = patchOptions.chkDup;
            }
            var returnTarget = false;
            if (patchOptions && patchOptions.rt !== undefined) {
                returnTarget = patchOptions.rt;
            }
            var 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;
            }
            var 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
            var taskData = {};
            var nativeAddEventListener = proto[zoneSymbolAddEventListener] = proto[ADD_EVENT_LISTENER];
            var nativeRemoveEventListener = proto[zoneSymbol(REMOVE_EVENT_LISTENER)] =
                proto[REMOVE_EVENT_LISTENER];
            var nativeListeners = proto[zoneSymbol(LISTENERS_EVENT_LISTENER)] =
                proto[LISTENERS_EVENT_LISTENER];
            var nativeRemoveAllListeners = proto[zoneSymbol(REMOVE_ALL_LISTENERS_EVENT_LISTENER)] =
                proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER];
            var 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 __assign(__assign({}, options), { passive: true });
                }
                return options;
            }
            var 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);
            };
            var 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) {
                    var symbolEventNames = zoneSymbolEventNames[task.eventName];
                    var symbolEventName = void 0;
                    if (symbolEventNames) {
                        symbolEventName = symbolEventNames[task.capture ? TRUE_STR : FALSE_STR];
                    }
                    var existingTasks = symbolEventName && task.target[symbolEventName];
                    if (existingTasks) {
                        for (var i = 0; i < existingTasks.length; i++) {
                            var 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);
            };
            var customScheduleNonGlobal = function (task) {
                return nativeAddEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);
            };
            var customSchedulePrepend = function (task) {
                return nativePrependEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);
            };
            var customCancelNonGlobal = function (task) {
                return nativeRemoveEventListener.call(task.target, task.eventName, task.invoke, task.options);
            };
            var customSchedule = useGlobalCallback ? customScheduleGlobal : customScheduleNonGlobal;
            var customCancel = useGlobalCallback ? customCancelGlobal : customCancelNonGlobal;
            var compareTaskCallbackVsDelegate = function (task, delegate) {
                var typeOfDelegate = typeof delegate;
                return (typeOfDelegate === 'function' && task.callback === delegate) ||
                    (typeOfDelegate === 'object' && task.originalDelegate === delegate);
            };
            var compare = (patchOptions && patchOptions.diff) ? patchOptions.diff : compareTaskCallbackVsDelegate;
            var unpatchedEvents = Zone[zoneSymbol('UNPATCHED_EVENTS')];
            var passiveEvents = _global[zoneSymbol('PASSIVE_EVENTS')];
            var makeAddListener = function (nativeListener, addSource, customScheduleFn, customCancelFn, returnTarget, prepend) {
                if (returnTarget === void 0) { returnTarget = false; }
                if (prepend === void 0) { prepend = false; }
                return function () {
                    var target = this || _global;
                    var eventName = arguments[0];
                    if (patchOptions && patchOptions.transferEventName) {
                        eventName = patchOptions.transferEventName(eventName);
                    }
                    var 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
                    var isHandleEvent = false;
                    if (typeof delegate !== 'function') {
                        if (!delegate.handleEvent) {
                            return nativeListener.apply(this, arguments);
                        }
                        isHandleEvent = true;
                    }
                    if (validateHandler && !validateHandler(nativeListener, delegate, target, arguments)) {
                        return;
                    }
                    var passive = passiveSupported && !!passiveEvents && passiveEvents.indexOf(eventName) !== -1;
                    var options = buildEventListenerOptions(arguments[2], passive);
                    if (unpatchedEvents) {
                        // check unpatched list
                        for (var 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);
                                }
                            }
                        }
                    }
                    var capture = !options ? false : typeof options === 'boolean' ? true : options.capture;
                    var once = options && typeof options === 'object' ? options.once : false;
                    var zone = Zone.current;
                    var symbolEventNames = zoneSymbolEventNames[eventName];
                    if (!symbolEventNames) {
                        prepareEventNames(eventName, eventNameToString);
                        symbolEventNames = zoneSymbolEventNames[eventName];
                    }
                    var symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];
                    var existingTasks = target[symbolEventName];
                    var isExisting = false;
                    if (existingTasks) {
                        // already have task registered
                        isExisting = true;
                        if (checkDuplicate) {
                            for (var 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] = [];
                    }
                    var source;
                    var constructorName = target.constructor['name'];
                    var 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;
                    var 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;
                    }
                    var 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 () {
                var target = this || _global;
                var eventName = arguments[0];
                if (patchOptions && patchOptions.transferEventName) {
                    eventName = patchOptions.transferEventName(eventName);
                }
                var options = arguments[2];
                var capture = !options ? false : typeof options === 'boolean' ? true : options.capture;
                var delegate = arguments[1];
                if (!delegate) {
                    return nativeRemoveEventListener.apply(this, arguments);
                }
                if (validateHandler &&
                    !validateHandler(nativeRemoveEventListener, delegate, target, arguments)) {
                    return;
                }
                var symbolEventNames = zoneSymbolEventNames[eventName];
                var symbolEventName;
                if (symbolEventNames) {
                    symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];
                }
                var existingTasks = symbolEventName && target[symbolEventName];
                if (existingTasks) {
                    for (var i = 0; i < existingTasks.length; i++) {
                        var 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') {
                                    var 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 () {
                var target = this || _global;
                var eventName = arguments[0];
                if (patchOptions && patchOptions.transferEventName) {
                    eventName = patchOptions.transferEventName(eventName);
                }
                var listeners = [];
                var tasks = findEventTasks(target, eventNameToString ? eventNameToString(eventName) : eventName);
                for (var i = 0; i < tasks.length; i++) {
                    var task = tasks[i];
                    var delegate = task.originalDelegate ? task.originalDelegate : task.callback;
                    listeners.push(delegate);
                }
                return listeners;
            };
            proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER] = function () {
                var target = this || _global;
                var eventName = arguments[0];
                if (!eventName) {
                    var keys = Object.keys(target);
                    for (var i = 0; i < keys.length; i++) {
                        var prop = keys[i];
                        var match = EVENT_NAME_SYMBOL_REGX.exec(prop);
                        var 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);
                    }
                    var symbolEventNames = zoneSymbolEventNames[eventName];
                    if (symbolEventNames) {
                        var symbolEventName = symbolEventNames[FALSE_STR];
                        var symbolCaptureEventName = symbolEventNames[TRUE_STR];
                        var tasks = target[symbolEventName];
                        var captureTasks = target[symbolCaptureEventName];
                        if (tasks) {
                            var removeTasks = tasks.slice();
                            for (var i = 0; i < removeTasks.length; i++) {
                                var task = removeTasks[i];
                                var delegate = task.originalDelegate ? task.originalDelegate : task.callback;
                                this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);
                            }
                        }
                        if (captureTasks) {
                            var removeTasks = captureTasks.slice();
                            for (var i = 0; i < removeTasks.length; i++) {
                                var task = removeTasks[i];
                                var 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;
        }
        var results = [];
        for (var i = 0; i < apis.length; i++) {
            results[i] = patchEventTargetMethods(apis[i], patchOptions);
        }
        return results;
    }
    function findEventTasks(target, eventName) {
        if (!eventName) {
            var foundTasks = [];
            for (var prop in target) {
                var match = EVENT_NAME_SYMBOL_REGX.exec(prop);
                var evtName = match && match[1];
                if (evtName && (!eventName || evtName === eventName)) {
                    var tasks = target[prop];
                    if (tasks) {
                        for (var i = 0; i < tasks.length; i++) {
                            foundTasks.push(tasks[i]);
                        }
                    }
                }
            }
            return foundTasks;
        }
        var symbolEventName = zoneSymbolEventNames[eventName];
        if (!symbolEventName) {
            prepareEventNames(eventName);
            symbolEventName = zoneSymbolEventNames[eventName];
        }
        var captureFalseTasks = target[symbolEventName[FALSE_STR]];
        var captureTrueTasks = target[symbolEventName[TRUE_STR]];
        if (!captureFalseTasks) {
            return captureTrueTasks ? captureTrueTasks.slice() : [];
        }
        else {
            return captureTrueTasks ? captureFalseTasks.concat(captureTrueTasks) :
                captureFalseTasks.slice();
        }
    }
    function patchEventPrototype(global, api) {
        var Event = global['Event'];
        if (Event && Event.prototype) {
            api.patchMethod(Event.prototype, 'stopImmediatePropagation', function (delegate) { return function (self, args) {
                self[IMMEDIATE_PROPAGATION_SYMBOL] = true;
                // we need to call the native stopImmediatePropagation
                // in case in some hybrid application, some part of
                // application will be controlled by zone, some are not
                delegate && delegate.apply(self, args);
            }; });
        }
    }
    function patchCallbacks(api, target, targetName, method, callbacks) {
        var symbol = Zone.__symbol__(method);
        if (target[symbol]) {
            return;
        }
        var nativeDelegate = target[symbol] = target[method];
        target[method] = function (name, opts, options) {
            if (opts && opts.prototype) {
                callbacks.forEach(function (callback) {
                    var source = "".concat(targetName, ".").concat(method, "::") + callback;
                    var prototype = opts.prototype;
                    // Note: the `patchCallbacks` is used for patching the `document.registerElement` and
                    // `customElements.define`. We explicitly wrap the patching code into try-catch since
                    // callbacks may be already patched by other web components frameworks (e.g. LWC), and they
                    // make those properties non-writable. This means that patching callback will throw an error
                    // `cannot assign to read-only property`. See this code as an example:
                    // https://github.com/salesforce/lwc/blob/master/packages/@lwc/engine-core/src/framework/base-bridge-element.ts#L180-L186
                    // We don't want to stop the application rendering if we couldn't patch some
                    // callback, e.g. `attributeChangedCallback`.
                    try {
                        if (prototype.hasOwnProperty(callback)) {
                            var descriptor = api.ObjectGetOwnPropertyDescriptor(prototype, callback);
                            if (descriptor && descriptor.value) {
                                descriptor.value = api.wrapWithCurrentZone(descriptor.value, source);
                                api._redefineProperty(opts.prototype, callback, descriptor);
                            }
                            else if (prototype[callback]) {
                                prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);
                            }
                        }
                        else if (prototype[callback]) {
                            prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);
                        }
                    }
                    catch (_a) {
                        // Note: we leave the catch block empty since there's no way to handle the error related
                        // to non-writable property.
                    }
                });
            }
            return nativeDelegate.call(target, name, opts, options);
        };
        api.attachOriginToPatched(target[method], nativeDelegate);
    }
    /**
     * @fileoverview
     * @suppress {globalThis}
     */
    function filterProperties(target, onProperties, ignoreProperties) {
        if (!ignoreProperties || ignoreProperties.length === 0) {
            return onProperties;
        }
        var tip = ignoreProperties.filter(function (ip) { return ip.target === target; });
        if (!tip || tip.length === 0) {
            return onProperties;
        }
        var targetIgnoreProperties = tip[0].ignoreProperties;
        return onProperties.filter(function (op) { return targetIgnoreProperties.indexOf(op) === -1; });
    }
    function patchFilteredProperties(target, onProperties, ignoreProperties, prototype) {
        // check whether target is available, sometimes target will be undefined
        // because different browser or some 3rd party plugin.
        if (!target) {
            return;
        }
        var filteredProperties = filterProperties(target, onProperties, ignoreProperties);
        patchOnProperties(target, filteredProperties, prototype);
    }
    /**
     * Get all event name properties which the event name startsWith `on`
     * from the target object itself, inherited properties are not considered.
     */
    function getOnEventNames(target) {
        return Object.getOwnPropertyNames(target)
            .filter(function (name) { return name.startsWith('on') && name.length > 2; })
            .map(function (name) { return name.substring(2); });
    }
    function propertyDescriptorPatch(api, _global) {
        if (isNode && !isMix) {
            return;
        }
        if (Zone[api.symbol('patchEvents')]) {
            // events are already been patched by legacy patch.
            return;
        }
        var ignoreProperties = _global['__Zone_ignore_on_properties'];
        // for browsers that we can patch the descriptor:  Chrome & Firefox
        var patchTargets = [];
        if (isBrowser) {
            var internalWindow_1 = window;
            patchTargets = patchTargets.concat([
                'Document', 'SVGElement', 'Element', 'HTMLElement', 'HTMLBodyElement', 'HTMLMediaElement',
                'HTMLFrameSetElement', 'HTMLFrameElement', 'HTMLIFrameElement', 'HTMLMarqueeElement', 'Worker'
            ]);
            var ignoreErrorProperties = isIE() ? [{ target: internalWindow_1, ignoreProperties: ['error'] }] : [];
            // in IE/Edge, onProp not exist in window object, but in WindowPrototype
            // so we need to pass WindowPrototype to check onProp exist or not
            patchFilteredProperties(internalWindow_1, getOnEventNames(internalWindow_1), ignoreProperties ? ignoreProperties.concat(ignoreErrorProperties) : ignoreProperties, ObjectGetPrototypeOf(internalWindow_1));
        }
        patchTargets = patchTargets.concat([
            'XMLHttpRequest', 'XMLHttpRequestEventTarget', 'IDBIndex', 'IDBRequest', 'IDBOpenDBRequest',
            'IDBDatabase', 'IDBTransaction', 'IDBCursor', 'WebSocket'
        ]);
        for (var i = 0; i < patchTargets.length; i++) {
            var target = _global[patchTargets[i]];
            target && target.prototype &&
                patchFilteredProperties(target.prototype, getOnEventNames(target.prototype), ignoreProperties);
        }
    }
    Zone.__load_patch('util', function (global, Zone, api) {
        // Collect native event names by looking at properties
        // on the global namespace, e.g. 'onclick'.
        var eventNames = getOnEventNames(global);
        api.patchOnProperties = patchOnProperties;
        api.patchMethod = patchMethod;
        api.bindArguments = bindArguments;
        api.patchMacroTask = patchMacroTask;
        // In earlier version of zone.js (<0.9.0), we use env name `__zone_symbol__BLACK_LISTED_EVENTS` to
        // define which events will not be patched by `Zone.js`.
        // In newer version (>=0.9.0), we change the env name to `__zone_symbol__UNPATCHED_EVENTS` to keep
        // the name consistent with angular repo.
        // The  `__zone_symbol__BLACK_LISTED_EVENTS` is deprecated, but it is still be supported for
        // backwards compatibility.
        var SYMBOL_BLACK_LISTED_EVENTS = Zone.__symbol__('BLACK_LISTED_EVENTS');
        var SYMBOL_UNPATCHED_EVENTS = Zone.__symbol__('UNPATCHED_EVENTS');
        if (global[SYMBOL_UNPATCHED_EVENTS]) {
            global[SYMBOL_BLACK_LISTED_EVENTS] = global[SYMBOL_UNPATCHED_EVENTS];
        }
        if (global[SYMBOL_BLACK_LISTED_EVENTS]) {
            Zone[SYMBOL_BLACK_LISTED_EVENTS] = Zone[SYMBOL_UNPATCHED_EVENTS] =
                global[SYMBOL_BLACK_LISTED_EVENTS];
        }
        api.patchEventPrototype = patchEventPrototype;
        api.patchEventTarget = patchEventTarget;
        api.isIEOrEdge = isIEOrEdge;
        api.ObjectDefineProperty = ObjectDefineProperty;
        api.ObjectGetOwnPropertyDescriptor = ObjectGetOwnPropertyDescriptor;
        api.ObjectCreate = ObjectCreate;
        api.ArraySlice = ArraySlice;
        api.patchClass = patchClass;
        api.wrapWithCurrentZone = wrapWithCurrentZone;
        api.filterProperties = filterProperties;
        api.attachOriginToPatched = attachOriginToPatched;
        api._redefineProperty = Object.defineProperty;
        api.patchCallbacks = patchCallbacks;
        api.getGlobalObjects = function () { return ({
            globalSources: globalSources,
            zoneSymbolEventNames: zoneSymbolEventNames,
            eventNames: eventNames,
            isBrowser: isBrowser,
            isMix: isMix,
            isNode: isNode,
            TRUE_STR: TRUE_STR,
            FALSE_STR: FALSE_STR,
            ZONE_SYMBOL_PREFIX: ZONE_SYMBOL_PREFIX,
            ADD_EVENT_LISTENER_STR: ADD_EVENT_LISTENER_STR,
            REMOVE_EVENT_LISTENER_STR: REMOVE_EVENT_LISTENER_STR
        }); };
    });
    /**
     * @fileoverview
     * @suppress {missingRequire}
     */
    function patchQueueMicrotask(global, api) {
        api.patchMethod(global, 'queueMicrotask', function (delegate) {
            return function (self, args) {
                Zone.current.scheduleMicroTask('queueMicrotask', args[0]);
            };
        });
    }
    /**
     * @fileoverview
     * @suppress {missingRequire}
     */
    var taskSymbol = zoneSymbol('zoneTask');
    function patchTimer(window, setName, cancelName, nameSuffix) {
        var setNative = null;
        var clearNative = null;
        setName += nameSuffix;
        cancelName += nameSuffix;
        var tasksByHandleId = {};
        function scheduleTask(task) {
            var 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, function (delegate) { return function (self, args) {
                if (typeof args[0] === 'function') {
                    var options_1 = {
                        isPeriodic: nameSuffix === 'Interval',
                        delay: (nameSuffix === 'Timeout' || nameSuffix === 'Interval') ? args[1] || 0 :
                            undefined,
                        args: args
                    };
                    var callback_1 = args[0];
                    args[0] = function timer() {
                        try {
                            return callback_1.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_1.isPeriodic)) {
                                if (typeof options_1.handleId === 'number') {
                                    // in non-nodejs env, we remove timerId
                                    // from local cache
                                    delete tasksByHandleId[options_1.handleId];
                                }
                                else if (options_1.handleId) {
                                    // Node returns complex objects as handleIds
                                    // we remove task reference from timer object
                                    options_1.handleId[taskSymbol] = null;
                                }
                            }
                        }
                    };
                    var task = scheduleMacroTaskWithCurrentZone(setName, args[0], options_1, scheduleTask, clearTask);
                    if (!task) {
                        return task;
                    }
                    // Node.js must additionally support the ref and unref functions.
                    var 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, function (delegate) { return function (self, args) {
                var id = args[0];
                var 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);
                }
            }; });
    }
    function patchCustomElements(_global, api) {
        var _a = api.getGlobalObjects(), isBrowser = _a.isBrowser, isMix = _a.isMix;
        if ((!isBrowser && !isMix) || !_global['customElements'] || !('customElements' in _global)) {
            return;
        }
        var callbacks = ['connectedCallback', 'disconnectedCallback', 'adoptedCallback', 'attributeChangedCallback'];
        api.patchCallbacks(api, _global.customElements, 'customElements', 'define', callbacks);
    }
    function eventTargetPatch(_global, api) {
        if (Zone[api.symbol('patchEventTarget')]) {
            // EventTarget is already patched.
            return;
        }
        var _a = api.getGlobalObjects(), eventNames = _a.eventNames, zoneSymbolEventNames = _a.zoneSymbolEventNames, TRUE_STR = _a.TRUE_STR, FALSE_STR = _a.FALSE_STR, ZONE_SYMBOL_PREFIX = _a.ZONE_SYMBOL_PREFIX;
        //  predefine all __zone_symbol__ + eventName + true/false string
        for (var i = 0; i < eventNames.length; i++) {
            var eventName = eventNames[i];
            var falseEventName = eventName + FALSE_STR;
            var trueEventName = eventName + TRUE_STR;
            var symbol = ZONE_SYMBOL_PREFIX + falseEventName;
            var symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;
            zoneSymbolEventNames[eventName] = {};
            zoneSymbolEventNames[eventName][FALSE_STR] = symbol;
            zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;
        }
        var EVENT_TARGET = _global['EventTarget'];
        if (!EVENT_TARGET || !EVENT_TARGET.prototype) {
            return;
        }
        api.patchEventTarget(_global, api, [EVENT_TARGET && EVENT_TARGET.prototype]);
        return true;
    }
    function patchEvent(global, api) {
        api.patchEventPrototype(global, api);
    }
    /**
     * @fileoverview
     * @suppress {missingRequire}
     */
    Zone.__load_patch('legacy', function (global) {
        var legacyPatch = global[Zone.__symbol__('legacyPatch')];
        if (legacyPatch) {
            legacyPatch();
        }
    });
    Zone.__load_patch('timers', function (global) {
        var set = 'set';
        var clear = 'clear';
        patchTimer(global, set, clear, 'Timeout');
        patchTimer(global, set, clear, 'Interval');
        patchTimer(global, set, clear, 'Immediate');
    });
    Zone.__load_patch('requestAnimationFrame', function (global) {
        patchTimer(global, 'request', 'cancel', 'AnimationFrame');
        patchTimer(global, 'mozRequest', 'mozCancel', 'AnimationFrame');
        patchTimer(global, 'webkitRequest', 'webkitCancel', 'AnimationFrame');
    });
    Zone.__load_patch('blocking', function (global, Zone) {
        var blockingMethods = ['alert', 'prompt', 'confirm'];
        for (var i = 0; i < blockingMethods.length; i++) {
            var name_2 = blockingMethods[i];
            patchMethod(global, name_2, function (delegate, symbol, name) {
                return function (s, args) {
                    return Zone.current.run(delegate, global, args, name);
                };
            });
        }
    });
    Zone.__load_patch('EventTarget', function (global, Zone, api) {
        patchEvent(global, api);
        eventTargetPatch(global, api);
        // patch XMLHttpRequestEventTarget's addEventListener/removeEventListener
        var XMLHttpRequestEventTarget = global['XMLHttpRequestEventTarget'];
        if (XMLHttpRequestEventTarget && XMLHttpRequestEventTarget.prototype) {
            api.patchEventTarget(global, api, [XMLHttpRequestEventTarget.prototype]);
        }
    });
    Zone.__load_patch('MutationObserver', function (global, Zone, api) {
        patchClass('MutationObserver');
        patchClass('WebKitMutationObserver');
    });
    Zone.__load_patch('IntersectionObserver', function (global, Zone, api) {
        patchClass('IntersectionObserver');
    });
    Zone.__load_patch('FileReader', function (global, Zone, api) {
        patchClass('FileReader');
    });
    Zone.__load_patch('on_property', function (global, Zone, api) {
        propertyDescriptorPatch(api, global);
    });
    Zone.__load_patch('customElements', function (global, Zone, api) {
        patchCustomElements(global, api);
    });
    Zone.__load_patch('XHR', function (global, Zone) {
        // Treat XMLHttpRequest as a macrotask.
        patchXHR(global);
        var XHR_TASK = zoneSymbol('xhrTask');
        var XHR_SYNC = zoneSymbol('xhrSync');
        var XHR_LISTENER = zoneSymbol('xhrListener');
        var XHR_SCHEDULED = zoneSymbol('xhrScheduled');
        var XHR_URL = zoneSymbol('xhrURL');
        var XHR_ERROR_BEFORE_SCHEDULED = zoneSymbol('xhrErrorBeforeScheduled');
        function patchXHR(window) {
            var XMLHttpRequest = window['XMLHttpRequest'];
            if (!XMLHttpRequest) {
                // XMLHttpRequest is not available in service worker
                return;
            }
            var XMLHttpRequestPrototype = XMLHttpRequest.prototype;
            function findPendingTask(target) {
                return target[XHR_TASK];
            }
            var oriAddListener = XMLHttpRequestPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];
            var oriRemoveListener = XMLHttpRequestPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];
            if (!oriAddListener) {
                var XMLHttpRequestEventTarget_1 = window['XMLHttpRequestEventTarget'];
                if (XMLHttpRequestEventTarget_1) {
                    var XMLHttpRequestEventTargetPrototype = XMLHttpRequestEventTarget_1.prototype;
                    oriAddListener = XMLHttpRequestEventTargetPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];
                    oriRemoveListener = XMLHttpRequestEventTargetPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];
                }
            }
            var READY_STATE_CHANGE = 'readystatechange';
            var SCHEDULED = 'scheduled';
            function scheduleTask(task) {
                var data = task.data;
                var target = data.target;
                target[XHR_SCHEDULED] = false;
                target[XHR_ERROR_BEFORE_SCHEDULED] = false;
                // remove existing event listener
                var listener = target[XHR_LISTENER];
                if (!oriAddListener) {
                    oriAddListener = target[ZONE_SYMBOL_ADD_EVENT_LISTENER];
                    oriRemoveListener = target[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];
                }
                if (listener) {
                    oriRemoveListener.call(target, READY_STATE_CHANGE, listener);
                }
                var newListener = target[XHR_LISTENER] = function () {
                    if (target.readyState === target.DONE) {
                        // sometimes on some browsers XMLHttpRequest will fire onreadystatechange with
                        // readyState=4 multiple times, so we need to check task state here
                        if (!data.aborted && target[XHR_SCHEDULED] && task.state === SCHEDULED) {
                            // check whether the xhr has registered onload listener
                            // if that is the case, the task should invoke after all
                            // onload listeners finish.
                            // Also if the request failed without response (status = 0), the load event handler
                            // will not be triggered, in that case, we should also invoke the placeholder callback
                            // to close the XMLHttpRequest::send macroTask.
                            // https://github.com/angular/angular/issues/38795
                            var loadTasks = target[Zone.__symbol__('loadfalse')];
                            if (target.status !== 0 && loadTasks && loadTasks.length > 0) {
                                var oriInvoke_1 = task.invoke;
                                task.invoke = function () {
                                    // need to load the tasks again, because in other
                                    // load listener, they may remove themselves
                                    var loadTasks = target[Zone.__symbol__('loadfalse')];
                                    for (var i = 0; i < loadTasks.length; i++) {
                                        if (loadTasks[i] === task) {
                                            loadTasks.splice(i, 1);
                                        }
                                    }
                                    if (!data.aborted && task.state === SCHEDULED) {
                                        oriInvoke_1.call(task);
                                    }
                                };
                                loadTasks.push(task);
                            }
                            else {
                                task.invoke();
                            }
                        }
                        else if (!data.aborted && target[XHR_SCHEDULED] === false) {
                            // error occurs when xhr.send()
                            target[XHR_ERROR_BEFORE_SCHEDULED] = true;
                        }
                    }
                };
                oriAddListener.call(target, READY_STATE_CHANGE, newListener);
                var storedTask = target[XHR_TASK];
                if (!storedTask) {
                    target[XHR_TASK] = task;
                }
                sendNative.apply(target, data.args);
                target[XHR_SCHEDULED] = true;
                return task;
            }
            function placeholderCallback() { }
            function clearTask(task) {
                var data = task.data;
                // Note - ideally, we would call data.target.removeEventListener here, but it's too late
                // to prevent it from firing. So instead, we store info for the event listener.
                data.aborted = true;
                return abortNative.apply(data.target, data.args);
            }
            var openNative = patchMethod(XMLHttpRequestPrototype, 'open', function () { return function (self, args) {
                self[XHR_SYNC] = args[2] == false;
                self[XHR_URL] = args[1];
                return openNative.apply(self, args);
            }; });
            var XMLHTTPREQUEST_SOURCE = 'XMLHttpRequest.send';
            var fetchTaskAborting = zoneSymbol('fetchTaskAborting');
            var fetchTaskScheduling = zoneSymbol('fetchTaskScheduling');
            var sendNative = patchMethod(XMLHttpRequestPrototype, 'send', function () { return function (self, args) {
                if (Zone.current[fetchTaskScheduling] === true) {
                    // a fetch is scheduling, so we are using xhr to polyfill fetch
                    // and because we already schedule macroTask for fetch, we should
                    // not schedule a macroTask for xhr again
                    return sendNative.apply(self, args);
                }
                if (self[XHR_SYNC]) {
                    // if the XHR is sync there is no task to schedule, just execute the code.
                    return sendNative.apply(self, args);
                }
                else {
                    var options = { target: self, url: self[XHR_URL], isPeriodic: false, args: args, aborted: false };
                    var task = scheduleMacroTaskWithCurrentZone(XMLHTTPREQUEST_SOURCE, placeholderCallback, options, scheduleTask, clearTask);
                    if (self && self[XHR_ERROR_BEFORE_SCHEDULED] === true && !options.aborted &&
                        task.state === SCHEDULED) {
                        // xhr request throw error when send
                        // we should invoke task instead of leaving a scheduled
                        // pending macroTask
                        task.invoke();
                    }
                }
            }; });
            var abortNative = patchMethod(XMLHttpRequestPrototype, 'abort', function () { return function (self, args) {
                var task = findPendingTask(self);
                if (task && typeof task.type == 'string') {
                    // If the XHR has already completed, do nothing.
                    // If the XHR has already been aborted, do nothing.
                    // Fix #569, call abort multiple times before done will cause
                    // macroTask task count be negative number
                    if (task.cancelFn == null || (task.data && task.data.aborted)) {
                        return;
                    }
                    task.zone.cancelTask(task);
                }
                else if (Zone.current[fetchTaskAborting] === true) {
                    // the abort is called from fetch polyfill, we need to call native abort of XHR.
                    return abortNative.apply(self, args);
                }
                // Otherwise, we are trying to abort an XHR which has not yet been sent, so there is no
                // task
                // to cancel. Do nothing.
            }; });
        }
    });
    Zone.__load_patch('geolocation', function (global) {
        /// GEO_LOCATION
        if (global['navigator'] && global['navigator'].geolocation) {
            patchPrototype(global['navigator'].geolocation, ['getCurrentPosition', 'watchPosition']);
        }
    });
    Zone.__load_patch('PromiseRejectionEvent', function (global, Zone) {
        // handle unhandled promise rejection
        function findPromiseRejectionHandler(evtName) {
            return function (e) {
                var eventTasks = findEventTasks(global, evtName);
                eventTasks.forEach(function (eventTask) {
                    // windows has added unhandledrejection event listener
                    // trigger the event listener
                    var PromiseRejectionEvent = global['PromiseRejectionEvent'];
                    if (PromiseRejectionEvent) {
                        var evt = new PromiseRejectionEvent(evtName, { promise: e.promise, reason: e.rejection });
                        eventTask.invoke(evt);
                    }
                });
            };
        }
        if (global['PromiseRejectionEvent']) {
            Zone[zoneSymbol('unhandledPromiseRejectionHandler')] =
                findPromiseRejectionHandler('unhandledrejection');
            Zone[zoneSymbol('rejectionHandledHandler')] =
                findPromiseRejectionHandler('rejectionhandled');
        }
    });
    Zone.__load_patch('queueMicrotask', function (global, Zone, api) {
        patchQueueMicrotask(global, api);
    });
}));