zone.js

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory() :
    typeof define === 'function' && define.amd ? define(factory) :
    (factory());
}(this, (function () { 'use strict';

var Zone$1 = (function (global) {
    if (global.Zone) {
        throw new Error('Zone already loaded.');
    }
    var Zone = (function () {
        function Zone(parent, zoneSpec) {
            this._properties = null;
            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 !== 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, "current", {
            get: function () { return _currentZone; },
            enumerable: true,
            configurable: true
        });
        
        Object.defineProperty(Zone, "currentTask", {
            get: function () { return _currentTask; },
            enumerable: true,
            configurable: true
        });
        
        Object.defineProperty(Zone.prototype, "parent", {
            get: function () { return this._parent; },
            enumerable: true,
            configurable: true
        });
        
        Object.defineProperty(Zone.prototype, "name", {
            get: function () { return this._name; },
            enumerable: true,
            configurable: true
        });
        
        Zone.prototype.get = function (key) {
            var zone = this.getZoneWith(key);
            if (zone)
                return zone._properties[key];
        };
        Zone.prototype.getZoneWith = function (key) {
            var current = this;
            while (current) {
                if (current._properties.hasOwnProperty(key)) {
                    return current;
                }
                current = current._parent;
            }
            return null;
        };
        Zone.prototype.fork = function (zoneSpec) {
            if (!zoneSpec)
                throw new Error('ZoneSpec required!');
            return this._zoneDelegate.fork(this, zoneSpec);
        };
        Zone.prototype.wrap = function (callback, source) {
            if (typeof callback !== 'function') {
                throw new Error('Expecting function got: ' + callback);
            }
            var _callback = this._zoneDelegate.intercept(this, callback, source);
            var zone = this;
            return function () {
                return zone.runGuarded(_callback, this, arguments, source);
            };
        };
        Zone.prototype.run = function (callback, applyThis, applyArgs, source) {
            if (applyThis === void 0) { applyThis = null; }
            if (applyArgs === void 0) { applyArgs = null; }
            if (source === void 0) { source = null; }
            var oldZone = _currentZone;
            _currentZone = this;
            try {
                return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
            }
            finally {
                _currentZone = oldZone;
            }
        };
        Zone.prototype.runGuarded = function (callback, applyThis, applyArgs, source) {
            if (applyThis === void 0) { applyThis = null; }
            if (applyArgs === void 0) { applyArgs = null; }
            if (source === void 0) { source = null; }
            var oldZone = _currentZone;
            _currentZone = this;
            try {
                try {
                    return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
                }
                catch (error) {
                    if (this._zoneDelegate.handleError(this, error)) {
                        throw error;
                    }
                }
            }
            finally {
                _currentZone = oldZone;
            }
        };
        Zone.prototype.runTask = function (task, applyThis, applyArgs) {
            task.runCount++;
            if (task.zone != this)
                throw new Error('A task can only be run in the zone which created it! (Creation: ' +
                    task.zone.name + '; Execution: ' + this.name + ')');
            var previousTask = _currentTask;
            _currentTask = task;
            var oldZone = _currentZone;
            _currentZone = this;
            try {
                if (task.type == 'macroTask' && task.data && !task.data.isPeriodic) {
                    task.cancelFn = null;
                }
                try {
                    return this._zoneDelegate.invokeTask(this, task, applyThis, applyArgs);
                }
                catch (error) {
                    if (this._zoneDelegate.handleError(this, error)) {
                        throw error;
                    }
                }
            }
            finally {
                _currentZone = oldZone;
                _currentTask = previousTask;
            }
        };
        Zone.prototype.scheduleMicroTask = function (source, callback, data, customSchedule) {
            return this._zoneDelegate.scheduleTask(this, new ZoneTask('microTask', this, source, callback, data, customSchedule, null));
        };
        Zone.prototype.scheduleMacroTask = function (source, callback, data, customSchedule, customCancel) {
            return this._zoneDelegate.scheduleTask(this, new ZoneTask('macroTask', this, source, callback, data, customSchedule, customCancel));
        };
        Zone.prototype.scheduleEventTask = function (source, callback, data, customSchedule, customCancel) {
            return this._zoneDelegate.scheduleTask(this, new ZoneTask('eventTask', this, source, callback, data, customSchedule, customCancel));
        };
        Zone.prototype.cancelTask = function (task) {
            var value = this._zoneDelegate.cancelTask(this, task);
            task.runCount = -1;
            task.cancelFn = null;
            return value;
        };
        Zone.__symbol__ = __symbol__;
        return Zone;
    }());
    
    var ZoneDelegate = (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._interceptZS = zoneSpec && (zoneSpec.onIntercept ? zoneSpec : parentDelegate._interceptZS);
            this._interceptDlgt = zoneSpec && (zoneSpec.onIntercept ? parentDelegate : parentDelegate._interceptDlgt);
            this._invokeZS = zoneSpec && (zoneSpec.onInvoke ? zoneSpec : parentDelegate._invokeZS);
            this._invokeDlgt = zoneSpec && (zoneSpec.onInvoke ? parentDelegate : parentDelegate._invokeDlgt);
            this._handleErrorZS = zoneSpec && (zoneSpec.onHandleError ? zoneSpec : parentDelegate._handleErrorZS);
            this._handleErrorDlgt = zoneSpec && (zoneSpec.onHandleError ? parentDelegate : parentDelegate._handleErrorDlgt);
            this._scheduleTaskZS = zoneSpec && (zoneSpec.onScheduleTask ? zoneSpec : parentDelegate._scheduleTaskZS);
            this._scheduleTaskDlgt = zoneSpec && (zoneSpec.onScheduleTask ? parentDelegate : parentDelegate._scheduleTaskDlgt);
            this._invokeTaskZS = zoneSpec && (zoneSpec.onInvokeTask ? zoneSpec : parentDelegate._invokeTaskZS);
            this._invokeTaskDlgt = zoneSpec && (zoneSpec.onInvokeTask ? parentDelegate : parentDelegate._invokeTaskDlgt);
            this._cancelTaskZS = zoneSpec && (zoneSpec.onCancelTask ? zoneSpec : parentDelegate._cancelTaskZS);
            this._cancelTaskDlgt = zoneSpec && (zoneSpec.onCancelTask ? parentDelegate : parentDelegate._cancelTaskDlgt);
            this._hasTaskZS = zoneSpec && (zoneSpec.onHasTask ? zoneSpec : parentDelegate._hasTaskZS);
            this._hasTaskDlgt = zoneSpec && (zoneSpec.onHasTask ? parentDelegate : parentDelegate._hasTaskDlgt);
        }
        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.zone, targetZone, callback, source)
                : callback;
        };
        ZoneDelegate.prototype.invoke = function (targetZone, callback, applyThis, applyArgs, source) {
            return this._invokeZS
                ? this._invokeZS.onInvoke(this._invokeDlgt, this.zone, targetZone, callback, applyThis, applyArgs, source)
                : callback.apply(applyThis, applyArgs);
        };
        ZoneDelegate.prototype.handleError = function (targetZone, error) {
            return this._handleErrorZS
                ? this._handleErrorZS.onHandleError(this._handleErrorDlgt, this.zone, targetZone, error)
                : true;
        };
        ZoneDelegate.prototype.scheduleTask = function (targetZone, task) {
            try {
                if (this._scheduleTaskZS) {
                    return this._scheduleTaskZS.onScheduleTask(this._scheduleTaskDlgt, this.zone, targetZone, task);
                }
                else if (task.scheduleFn) {
                    task.scheduleFn(task);
                }
                else if (task.type == 'microTask') {
                    scheduleMicroTask(task);
                }
                else {
                    throw new Error('Task is missing scheduleFn.');
                }
                return task;
            }
            finally {
                if (targetZone == this.zone) {
                    this._updateTaskCount(task.type, 1);
                }
            }
        };
        ZoneDelegate.prototype.invokeTask = function (targetZone, task, applyThis, applyArgs) {
            try {
                return this._invokeTaskZS
                    ? this._invokeTaskZS.onInvokeTask(this._invokeTaskDlgt, this.zone, targetZone, task, applyThis, applyArgs)
                    : task.callback.apply(applyThis, applyArgs);
            }
            finally {
                if (targetZone == this.zone && (task.type != 'eventTask') && !(task.data && task.data.isPeriodic)) {
                    this._updateTaskCount(task.type, -1);
                }
            }
        };
        ZoneDelegate.prototype.cancelTask = function (targetZone, task) {
            var value;
            if (this._cancelTaskZS) {
                value = this._cancelTaskZS.onCancelTask(this._cancelTaskDlgt, this.zone, targetZone, task);
            }
            else if (!task.cancelFn) {
                throw new Error('Task does not support cancellation, or is already canceled.');
            }
            else {
                value = task.cancelFn(task);
            }
            if (targetZone == this.zone) {
                // this should not be in the finally block, because exceptions assume not canceled.
                this._updateTaskCount(task.type, -1);
            }
            return value;
        };
        ZoneDelegate.prototype.hasTask = function (targetZone, isEmpty) {
            return this._hasTaskZS && this._hasTaskZS.onHasTask(this._hasTaskDlgt, this.zone, targetZone, isEmpty);
        };
        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
                };
                try {
                    this.hasTask(this.zone, isEmpty);
                }
                finally {
                    if (this._parentDelegate) {
                        this._parentDelegate._updateTaskCount(type, count);
                    }
                }
            }
        };
        return ZoneDelegate;
    }());
    var ZoneTask = (function () {
        function ZoneTask(type, zone, source, callback, options, scheduleFn, cancelFn) {
            this.runCount = 0;
            this.type = type;
            this.zone = zone;
            this.source = source;
            this.data = options;
            this.scheduleFn = scheduleFn;
            this.cancelFn = cancelFn;
            this.callback = callback;
            var self = this;
            this.invoke = function () {
                _numberOfNestedTaskFrames++;
                try {
                    return zone.runTask(self, this, arguments);
                }
                finally {
                    if (_numberOfNestedTaskFrames == 1) {
                        drainMicroTaskQueue();
                    }
                    _numberOfNestedTaskFrames--;
                }
            };
        }
        ZoneTask.prototype.toString = function () {
            if (this.data && typeof this.data.handleId !== 'undefined') {
                return this.data.handleId;
            }
            else {
                return this.toString();
            }
        };
        return ZoneTask;
    }());
    function __symbol__(name) { return '__zone_symbol__' + name; }
    
    var symbolSetTimeout = __symbol__('setTimeout');
    var symbolPromise = __symbol__('Promise');
    var symbolThen = __symbol__('then');
    var _currentZone = new Zone(null, null);
    var _currentTask = null;
    var _microTaskQueue = [];
    var _isDrainingMicrotaskQueue = false;
    var _uncaughtPromiseErrors = [];
    var _numberOfNestedTaskFrames = 0;
    function scheduleQueueDrain() {
        // if we are not running in any task, and there has not been anything scheduled
        // we must bootstrap the initial task creation by manually scheduling the drain
        if (_numberOfNestedTaskFrames == 0 && _microTaskQueue.length == 0) {
            // We are not running in Task, so we need to kickstart the microtask queue.
            if (global[symbolPromise]) {
                global[symbolPromise].resolve(0)[symbolThen](drainMicroTaskQueue);
            }
            else {
                global[symbolSetTimeout](drainMicroTaskQueue, 0);
            }
        }
    }
    function scheduleMicroTask(task) {
        scheduleQueueDrain();
        _microTaskQueue.push(task);
    }
    function consoleError(e) {
        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);
        }
        console.error(e);
    }
    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 (e) {
                        consoleError(e);
                    }
                }
            }
            while (_uncaughtPromiseErrors.length) {
                var _loop_1 = function() {
                    var uncaughtPromiseError = _uncaughtPromiseErrors.shift();
                    try {
                        uncaughtPromiseError.zone.runGuarded(function () { throw uncaughtPromiseError; });
                    }
                    catch (e) {
                        consoleError(e);
                    }
                };
                while (_uncaughtPromiseErrors.length) {
                    _loop_1();
                }
            }
            _isDrainingMicrotaskQueue = false;
        }
    }
    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 source = 'Promise.then';
    var UNRESOLVED = null;
    var RESOLVED = true;
    var REJECTED = false;
    var REJECTED_NO_CATCH = 0;
    function makeResolver(promise, state) {
        return function (v) {
            resolvePromise(promise, state, v);
            // Do not return value or you will break the Promise spec.
        };
    }
    function resolvePromise(promise, state, value) {
        if (promise[symbolState] === UNRESOLVED) {
            if (value instanceof ZoneAwarePromise && value[symbolState] !== UNRESOLVED) {
                clearRejectedNoCatch(value);
                resolvePromise(promise, value[symbolState], value[symbolValue]);
            }
            else if (isThenable(value)) {
                value.then(makeResolver(promise, state), makeResolver(promise, false));
            }
            else {
                promise[symbolState] = state;
                var queue = promise[symbolValue];
                promise[symbolValue] = value;
                for (var i = 0; i < queue.length;) {
                    scheduleResolveOrReject(promise, queue[i++], queue[i++], queue[i++], queue[i++]);
                }
                if (queue.length == 0 && state == REJECTED) {
                    promise[symbolState] = REJECTED_NO_CATCH;
                    try {
                        throw new Error("Uncaught (in promise): " + value);
                    }
                    catch (e) {
                        var error_1 = e;
                        error_1.rejection = value;
                        error_1.promise = promise;
                        error_1.zone = Zone.current;
                        error_1.task = Zone.currentTask;
                        _uncaughtPromiseErrors.push(error_1);
                        scheduleQueueDrain();
                    }
                }
            }
        }
        // Resolving an already resolved promise is a noop.
        return promise;
    }
    function clearRejectedNoCatch(promise) {
        if (promise[symbolState] === REJECTED_NO_CATCH) {
            promise[symbolState] = REJECTED;
            for (var i = 0; i < _uncaughtPromiseErrors.length; i++) {
                if (promise === _uncaughtPromiseErrors[i].promise) {
                    _uncaughtPromiseErrors.splice(i, 1);
                    break;
                }
            }
        }
    }
    function scheduleResolveOrReject(promise, zone, chainPromise, onFulfilled, onRejected) {
        clearRejectedNoCatch(promise);
        var delegate = promise[symbolState] ? onFulfilled || forwardResolution : onRejected || forwardRejection;
        zone.scheduleMicroTask(source, function () {
            try {
                resolvePromise(chainPromise, true, zone.run(delegate, null, [promise[symbolValue]]));
            }
            catch (error) {
                resolvePromise(chainPromise, false, error);
            }
        });
    }
    var ZoneAwarePromise = (function () {
        function ZoneAwarePromise(executor) {
            var promise = this;
            if (!(promise instanceof ZoneAwarePromise)) {
                throw new Error('Must be an instanceof Promise.');
            }
            promise[symbolState] = UNRESOLVED;
            promise[symbolValue] = []; // queue;
            try {
                executor && executor(makeResolver(promise, RESOLVED), makeResolver(promise, REJECTED));
            }
            catch (e) {
                resolvePromise(promise, false, e);
            }
        }
        ZoneAwarePromise.resolve = function (value) {
            return resolvePromise(new this(null), RESOLVED, value);
        };
        ZoneAwarePromise.reject = function (error) {
            return resolvePromise(new this(null), REJECTED, error);
        };
        ZoneAwarePromise.race = function (values) {
            var resolve;
            var reject;
            var promise = new this(function (res, rej) { resolve = res; reject = rej; });
            function onResolve(value) { promise && (promise = null || resolve(value)); }
            function onReject(error) { promise && (promise = null || reject(error)); }
            for (var _i = 0, values_1 = values; _i < values_1.length; _i++) {
                var value = values_1[_i];
                if (!isThenable(value)) {
                    value = this.resolve(value);
                }
                value.then(onResolve, onReject);
            }
            return promise;
        };
        ZoneAwarePromise.all = function (values) {
            var resolve;
            var reject;
            var promise = new this(function (res, rej) { resolve = res; reject = rej; });
            var count = 0;
            var resolvedValues = [];
            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((function (index) { return function (value) {
                    resolvedValues[index] = value;
                    count--;
                    if (!count) {
                        resolve(resolvedValues);
                    }
                }; })(count), reject);
                count++;
            }
            if (!count)
                resolve(resolvedValues);
            return promise;
        };
        ZoneAwarePromise.prototype.then = function (onFulfilled, onRejected) {
            var chainPromise = new this.constructor(null);
            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);
        };
        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[__symbol__('Promise')] = global.Promise;
    global.Promise = ZoneAwarePromise;
    function patchThen(NativePromise) {
        var NativePromiseProtototype = NativePromise.prototype;
        var NativePromiseThen = NativePromiseProtototype[__symbol__('then')]
            = NativePromiseProtototype.then;
        NativePromiseProtototype.then = function (onResolve, onReject) {
            var nativePromise = this;
            return new ZoneAwarePromise(function (resolve, reject) {
                NativePromiseThen.call(nativePromise, resolve, reject);
            }).then(onResolve, onReject);
        };
    }
    if (NativePromise) {
        patchThen(NativePromise);
        if (typeof global['fetch'] !== 'undefined') {
            var fetchPromise = void 0;
            try {
                // In MS Edge this throws
                fetchPromise = global['fetch']();
            }
            catch (e) {
                // In Chrome this throws instead.
                fetchPromise = global['fetch']('about:blank');
            }
            // ignore output to prevent error;
            fetchPromise.then(function () { return null; }, function () { return null; });
            if (fetchPromise.constructor != NativePromise) {
                patchThen(fetchPromise.constructor);
            }
        }
    }
    // This is not part of public API, but it is usefull for tests, so we expose it.
    Promise[Zone.__symbol__('uncaughtPromiseErrors')] = _uncaughtPromiseErrors;
    return global.Zone = Zone;
})(typeof window === 'object' && window || typeof self === 'object' && self || global);

/**
 * Suppress closure compiler errors about unknown 'process' variable
 * @fileoverview
 * @suppress {undefinedVars}
 */
var zoneSymbol = Zone['__symbol__'];
var _global$1 = typeof window === 'object' && window || typeof self === 'object' && self || global;
function bindArguments(args, source) {
    for (var i = args.length - 1; i >= 0; i--) {
        if (typeof args[i] === 'function') {
            args[i] = Zone.current.wrap(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) {
            prototype[name_1] = (function (delegate) {
                return function () {
                    return delegate.apply(this, bindArguments(arguments, source + '.' + name_1));
                };
            })(delegate);
        }
    };
    for (var i = 0; i < fnNames.length; i++) {
        _loop_1(i);
    }
}

var isWebWorker = (typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope);
var isNode = (typeof process !== 'undefined' && {}.toString.call(process) === '[object process]');
var isBrowser = !isNode && !isWebWorker && !!(typeof window !== 'undefined' && window['HTMLElement']);
function patchProperty(obj, prop) {
    var desc = Object.getOwnPropertyDescriptor(obj, prop) || {
        enumerable: true,
        configurable: true
    };
    // 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;
    // substr(2) cuz 'onclick' -> 'click', etc
    var eventName = prop.substr(2);
    var _prop = '_' + prop;
    desc.set = function (fn) {
        if (this[_prop]) {
            this.removeEventListener(eventName, this[_prop]);
        }
        if (typeof fn === 'function') {
            var wrapFn = function (event) {
                var result;
                result = fn.apply(this, arguments);
                if (result != undefined && !result)
                    event.preventDefault();
            };
            this[_prop] = wrapFn;
            this.addEventListener(eventName, wrapFn, false);
        }
        else {
            this[_prop] = null;
        }
    };
    // The getter would return undefined for unassigned properties but the default value of an unassigned property is null
    desc.get = function () {
        return this[_prop] || null;
    };
    Object.defineProperty(obj, prop, desc);
}

function patchOnProperties(obj, properties) {
    var onProperties = [];
    for (var prop in obj) {
        if (prop.substr(0, 2) == 'on') {
            onProperties.push(prop);
        }
    }
    for (var j = 0; j < onProperties.length; j++) {
        patchProperty(obj, onProperties[j]);
    }
    if (properties) {
        for (var i = 0; i < properties.length; i++) {
            patchProperty(obj, 'on' + properties[i]);
        }
    }
}

var EVENT_TASKS = zoneSymbol('eventTasks');
// For EventTarget
var ADD_EVENT_LISTENER = 'addEventListener';
var REMOVE_EVENT_LISTENER = 'removeEventListener';
function findExistingRegisteredTask(target, handler, name, capture, remove) {
    var eventTasks = target[EVENT_TASKS];
    if (eventTasks) {
        for (var i = 0; i < eventTasks.length; i++) {
            var eventTask = eventTasks[i];
            var data = eventTask.data;
            if (data.handler === handler
                && data.useCapturing === capture
                && data.eventName === name) {
                if (remove) {
                    eventTasks.splice(i, 1);
                }
                return eventTask;
            }
        }
    }
    return null;
}
function attachRegisteredEvent(target, eventTask) {
    var eventTasks = target[EVENT_TASKS];
    if (!eventTasks) {
        eventTasks = target[EVENT_TASKS] = [];
    }
    eventTasks.push(eventTask);
}
function makeZoneAwareAddListener(addFnName, removeFnName, useCapturingParam, allowDuplicates) {
    if (useCapturingParam === void 0) { useCapturingParam = true; }
    if (allowDuplicates === void 0) { allowDuplicates = false; }
    var addFnSymbol = zoneSymbol(addFnName);
    var removeFnSymbol = zoneSymbol(removeFnName);
    var defaultUseCapturing = useCapturingParam ? false : undefined;
    function scheduleEventListener(eventTask) {
        var meta = eventTask.data;
        attachRegisteredEvent(meta.target, eventTask);
        return meta.target[addFnSymbol](meta.eventName, eventTask.invoke, meta.useCapturing);
    }
    function cancelEventListener(eventTask) {
        var meta = eventTask.data;
        findExistingRegisteredTask(meta.target, eventTask.invoke, meta.eventName, meta.useCapturing, true);
        meta.target[removeFnSymbol](meta.eventName, eventTask.invoke, meta.useCapturing);
    }
    return function zoneAwareAddListener(self, args) {
        var eventName = args[0];
        var handler = args[1];
        var useCapturing = args[2] || defaultUseCapturing;
        // - Inside a Web Worker, `this` is undefined, the context is `global`
        // - When `addEventListener` is called on the global context in strict mode, `this` is undefined
        // see https://github.com/angular/zone.js/issues/190
        var target = self || _global$1;
        var delegate = null;
        if (typeof handler == 'function') {
            delegate = handler;
        }
        else if (handler && handler.handleEvent) {
            delegate = function (event) { return handler.handleEvent(event); };
        }
        var validZoneHandler = false;
        try {
            // In cross site contexts (such as WebDriver frameworks like Selenium),
            // accessing the handler object here will cause an exception to be thrown which
            // will fail tests prematurely.
            validZoneHandler = handler && handler.toString() === "[object FunctionWrapper]";
        }
        catch (e) {
            // Returning nothing here is fine, because objects in a cross-site context are unusable
            return;
        }
        // Ignore special listeners of IE11 & Edge dev tools, see https://github.com/angular/zone.js/issues/150
        if (!delegate || validZoneHandler) {
            return target[addFnSymbol](eventName, handler, useCapturing);
        }
        if (!allowDuplicates) {
            var eventTask = findExistingRegisteredTask(target, handler, eventName, useCapturing, false);
            if (eventTask) {
                // we already registered, so this will have noop.
                return target[addFnSymbol](eventName, eventTask.invoke, useCapturing);
            }
        }
        var zone = Zone.current;
        var source = target.constructor['name'] + '.' + addFnName + ':' + eventName;
        var data = {
            target: target,
            eventName: eventName,
            name: eventName,
            useCapturing: useCapturing,
            handler: handler
        };
        zone.scheduleEventTask(source, delegate, data, scheduleEventListener, cancelEventListener);
    };
}
function makeZoneAwareRemoveListener(fnName, useCapturingParam) {
    if (useCapturingParam === void 0) { useCapturingParam = true; }
    var symbol = zoneSymbol(fnName);
    var defaultUseCapturing = useCapturingParam ? false : undefined;
    return function zoneAwareRemoveListener(self, args) {
        var eventName = args[0];
        var handler = args[1];
        var useCapturing = args[2] || defaultUseCapturing;
        // - Inside a Web Worker, `this` is undefined, the context is `global`
        // - When `addEventListener` is called on the global context in strict mode, `this` is undefined
        // see https://github.com/angular/zone.js/issues/190
        var target = self || _global$1;
        var eventTask = findExistingRegisteredTask(target, handler, eventName, useCapturing, true);
        if (eventTask) {
            eventTask.zone.cancelTask(eventTask);
        }
        else {
            target[symbol](eventName, handler, useCapturing);
        }
    };
}

var zoneAwareAddEventListener = makeZoneAwareAddListener(ADD_EVENT_LISTENER, REMOVE_EVENT_LISTENER);
var zoneAwareRemoveEventListener = makeZoneAwareRemoveListener(REMOVE_EVENT_LISTENER);
function patchEventTargetMethods(obj) {
    if (obj && obj.addEventListener) {
        patchMethod(obj, ADD_EVENT_LISTENER, function () { return zoneAwareAddEventListener; });
        patchMethod(obj, REMOVE_EVENT_LISTENER, function () { return zoneAwareRemoveEventListener; });
        return true;
    }
    else {
        return false;
    }
}
var originalInstanceKey = zoneSymbol('originalInstance');
// wrap some native API on `window`
function patchClass(className) {
    var OriginalClass = _global$1[className];
    if (!OriginalClass)
        return;
    _global$1[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.');
        }
    };
    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$1[className].prototype[prop] = function () {
                    return this[originalInstanceKey][prop].apply(this[originalInstanceKey], arguments);
                };
            }
            else {
                Object.defineProperty(_global$1[className].prototype, prop, {
                    set: function (fn) {
                        if (typeof fn === 'function') {
                            this[originalInstanceKey][prop] = Zone.current.wrap(fn, className + '.' + prop);
                        }
                        else {
                            this[originalInstanceKey][prop] = fn;
                        }
                    },
                    get: function () {
                        return this[originalInstanceKey][prop];
                    }
                });
            }
        }(prop));
    }
    for (prop in OriginalClass) {
        if (prop !== 'prototype' && OriginalClass.hasOwnProperty(prop)) {
            _global$1[className][prop] = OriginalClass[prop];
        }
    }
}

function createNamedFn(name, delegate) {
    try {
        return (Function('f', "return function " + name + "(){return f(this, arguments)}"))(delegate);
    }
    catch (e) {
        // if we fail, we must be CSP, just return delegate.
        return function () {
            return delegate(this, arguments);
        };
    }
}
function patchMethod(target, name, patchFn) {
    var proto = target;
    while (proto && !proto.hasOwnProperty(name)) {
        proto = Object.getPrototypeOf(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;
    if (proto && !(delegate = proto[delegateName])) {
        delegate = proto[delegateName] = proto[name];
        proto[name] = createNamedFn(name, patchFn(delegate, delegateName, name));
    }
    return delegate;
}

var WTF_ISSUE_555 = 'Anchor,Area,Audio,BR,Base,BaseFont,Body,Button,Canvas,Content,DList,Directory,Div,Embed,FieldSet,Font,Form,Frame,FrameSet,HR,Head,Heading,Html,IFrame,Image,Input,Keygen,LI,Label,Legend,Link,Map,Marquee,Media,Menu,Meta,Meter,Mod,OList,Object,OptGroup,Option,Output,Paragraph,Pre,Progress,Quote,Script,Select,Source,Span,Style,TableCaption,TableCell,TableCol,Table,TableRow,TableSection,TextArea,Title,Track,UList,Unknown,Video';
var NO_EVENT_TARGET = 'ApplicationCache,EventSource,FileReader,InputMethodContext,MediaController,MessagePort,Node,Performance,SVGElementInstance,SharedWorker,TextTrack,TextTrackCue,TextTrackList,WebKitNamedFlow,Window,Worker,WorkerGlobalScope,XMLHttpRequest,XMLHttpRequestEventTarget,XMLHttpRequestUpload,IDBRequest,IDBOpenDBRequest,IDBDatabase,IDBTransaction,IDBCursor,DBIndex'.split(',');
var EVENT_TARGET = 'EventTarget';
function eventTargetPatch(_global) {
    var apis = [];
    var isWtf = _global['wtf'];
    if (isWtf) {
        // Workaround for: https://github.com/google/tracing-framework/issues/555
        apis = WTF_ISSUE_555.split(',').map(function (v) { return 'HTML' + v + 'Element'; }).concat(NO_EVENT_TARGET);
    }
    else if (_global[EVENT_TARGET]) {
        apis.push(EVENT_TARGET);
    }
    else {
        // Note: EventTarget is not available in all browsers,
        // if it's not available, we instead patch the APIs in the IDL that inherit from EventTarget
        apis = NO_EVENT_TARGET;
    }
    for (var i = 0; i < apis.length; i++) {
        var type = _global[apis[i]];
        patchEventTargetMethods(type && type.prototype);
    }
}

/*
 * This is necessary for Chrome and Chrome mobile, to enable
 * things like redefining `createdCallback` on an element.
 */
var _defineProperty = Object[zoneSymbol('defineProperty')] = Object.defineProperty;
var _getOwnPropertyDescriptor = Object[zoneSymbol('getOwnPropertyDescriptor')] = Object.getOwnPropertyDescriptor;
var _create = Object.create;
var unconfigurablesKey = zoneSymbol('unconfigurables');
function propertyPatch() {
    Object.defineProperty = function (obj, prop, desc) {
        if (isUnconfigurable(obj, prop)) {
            throw new TypeError('Cannot assign to read only property \'' + prop + '\' of ' + obj);
        }
        var originalConfigurableFlag = desc.configurable;
        if (prop !== 'prototype') {
            desc = rewriteDescriptor(obj, prop, desc);
        }
        return _tryDefineProperty(obj, prop, desc, originalConfigurableFlag);
    };
    Object.defineProperties = function (obj, props) {
        Object.keys(props).forEach(function (prop) {
            Object.defineProperty(obj, prop, props[prop]);
        });
        return obj;
    };
    Object.create = function (obj, proto) {
        if (typeof proto === 'object' && !Object.isFrozen(proto)) {
            Object.keys(proto).forEach(function (prop) {
                proto[prop] = rewriteDescriptor(obj, prop, proto[prop]);
            });
        }
        return _create(obj, proto);
    };
    Object.getOwnPropertyDescriptor = function (obj, prop) {
        var desc = _getOwnPropertyDescriptor(obj, prop);
        if (isUnconfigurable(obj, prop)) {
            desc.configurable = false;
        }
        return desc;
    };
}

function _redefineProperty(obj, prop, desc) {
    var originalConfigurableFlag = desc.configurable;
    desc = rewriteDescriptor(obj, prop, desc);
    return _tryDefineProperty(obj, prop, desc, originalConfigurableFlag);
}

function isUnconfigurable(obj, prop) {
    return obj && obj[unconfigurablesKey] && obj[unconfigurablesKey][prop];
}
function rewriteDescriptor(obj, prop, desc) {
    desc.configurable = true;
    if (!desc.configurable) {
        if (!obj[unconfigurablesKey]) {
            _defineProperty(obj, unconfigurablesKey, { writable: true, value: {} });
        }
        obj[unconfigurablesKey][prop] = true;
    }
    return desc;
}
function _tryDefineProperty(obj, prop, desc, originalConfigurableFlag) {
    try {
        return _defineProperty(obj, prop, desc);
    }
    catch (e) {
        if (desc.configurable) {
            // In case of errors, when the configurable flag was likely set by rewriteDescriptor(), let's retry with the original flag value
            if (typeof originalConfigurableFlag == 'undefined') {
                delete desc.configurable;
            }
            else {
                desc.configurable = originalConfigurableFlag;
            }
            try {
                return _defineProperty(obj, prop, desc);
            }
            catch (e) {
                var descJson = null;
                try {
                    descJson = JSON.stringify(desc);
                }
                catch (e) {
                    descJson = descJson.toString();
                }
                console.log("Attempting to configure '" + prop + "' with descriptor '" + descJson + "' on object '" + obj + "' and got error, giving up: " + e);
            }
        }
        else {
            throw e;
        }
    }
}

function registerElementPatch(_global) {
    if (!isBrowser || !('registerElement' in _global.document)) {
        return;
    }
    var _registerElement = document.registerElement;
    var callbacks = [
        'createdCallback',
        'attachedCallback',
        'detachedCallback',
        'attributeChangedCallback'
    ];
    document.registerElement = function (name, opts) {
        if (opts && opts.prototype) {
            callbacks.forEach(function (callback) {
                var source = 'Document.registerElement::' + callback;
                if (opts.prototype.hasOwnProperty(callback)) {
                    var descriptor = Object.getOwnPropertyDescriptor(opts.prototype, callback);
                    if (descriptor && descriptor.value) {
                        descriptor.value = Zone.current.wrap(descriptor.value, source);
                        _redefineProperty(opts.prototype, callback, descriptor);
                    }
                    else {
                        opts.prototype[callback] = Zone.current.wrap(opts.prototype[callback], source);
                    }
                }
                else if (opts.prototype[callback]) {
                    opts.prototype[callback] = Zone.current.wrap(opts.prototype[callback], source);
                }
            });
        }
        return _registerElement.apply(document, [name, opts]);
    };
}

// we have to patch the instance since the proto is non-configurable
function apply(_global) {
    var WS = _global.WebSocket;
    // On Safari window.EventTarget doesn't exist so need to patch WS add/removeEventListener
    // On older Chrome, no need since EventTarget was already patched
    if (!_global.EventTarget) {
        patchEventTargetMethods(WS.prototype);
    }
    _global.WebSocket = function (a, b) {
        var socket = arguments.length > 1 ? new WS(a, b) : new WS(a);
        var proxySocket;
        // Safari 7.0 has non-configurable own 'onmessage' and friends properties on the socket instance
        var onmessageDesc = Object.getOwnPropertyDescriptor(socket, 'onmessage');
        if (onmessageDesc && onmessageDesc.configurable === false) {
            proxySocket = Object.create(socket);
            ['addEventListener', 'removeEventListener', 'send', 'close'].forEach(function (propName) {
                proxySocket[propName] = function () {
                    return socket[propName].apply(socket, arguments);
                };
            });
        }
        else {
            // we can patch the real socket
            proxySocket = socket;
        }
        patchOnProperties(proxySocket, ['close', 'error', 'message', 'open']);
        return proxySocket;
    };
    for (var prop in WS) {
        _global.WebSocket[prop] = WS[prop];
    }
}

var eventNames = 'copy cut paste abort blur focus canplay canplaythrough change click contextmenu dblclick drag dragend dragenter dragleave dragover dragstart drop durationchange emptied ended input invalid keydown keypress keyup load loadeddata loadedmetadata loadstart message mousedown mouseenter mouseleave mousemove mouseout mouseover mouseup pause play playing progress ratechange reset scroll seeked seeking select show stalled submit suspend timeupdate volumechange waiting mozfullscreenchange mozfullscreenerror mozpointerlockchange mozpointerlockerror error webglcontextrestored webglcontextlost webglcontextcreationerror'.split(' ');
function propertyDescriptorPatch(_global) {
    if (isNode) {
        return;
    }
    var supportsWebSocket = typeof WebSocket !== 'undefined';
    if (canPatchViaPropertyDescriptor()) {
        // for browsers that we can patch the descriptor:  Chrome & Firefox
        if (isBrowser) {
            patchOnProperties(HTMLElement.prototype, eventNames);
        }
        patchOnProperties(XMLHttpRequest.prototype, null);
        if (typeof IDBIndex !== 'undefined') {
            patchOnProperties(IDBIndex.prototype, null);
            patchOnProperties(IDBRequest.prototype, null);
            patchOnProperties(IDBOpenDBRequest.prototype, null);
            patchOnProperties(IDBDatabase.prototype, null);
            patchOnProperties(IDBTransaction.prototype, null);
            patchOnProperties(IDBCursor.prototype, null);
        }
        if (supportsWebSocket) {
            patchOnProperties(WebSocket.prototype, null);
        }
    }
    else {
        // Safari, Android browsers (Jelly Bean)
        patchViaCapturingAllTheEvents();
        patchClass('XMLHttpRequest');
        if (supportsWebSocket) {
            apply(_global);
        }
    }
}
function canPatchViaPropertyDescriptor() {
    if (isBrowser && !Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'onclick')
        && typeof Element !== 'undefined') {
        // WebKit https://bugs.webkit.org/show_bug.cgi?id=134364
        // IDL interface attributes are not configurable
        var desc = Object.getOwnPropertyDescriptor(Element.prototype, 'onclick');
        if (desc && !desc.configurable)
            return false;
    }
    Object.defineProperty(XMLHttpRequest.prototype, 'onreadystatechange', {
        get: function () {
            return true;
        }
    });
    var req = new XMLHttpRequest();
    var result = !!req.onreadystatechange;
    Object.defineProperty(XMLHttpRequest.prototype, 'onreadystatechange', {});
    return result;
}

var unboundKey = zoneSymbol('unbound');
// Whenever any eventListener fires, we check the eventListener target and all parents
// for `onwhatever` properties and replace them with zone-bound functions
// - Chrome (for now)
function patchViaCapturingAllTheEvents() {
    var _loop_1 = function(i) {
        var property = eventNames[i];
        var onproperty = 'on' + property;
        document.addEventListener(property, function (event) {
            var elt = event.target, bound, source;
            if (elt) {
                source = elt.constructor['name'] + '.' + onproperty;
            }
            else {
                source = 'unknown.' + onproperty;
            }
            while (elt) {
                if (elt[onproperty] && !elt[onproperty][unboundKey]) {
                    bound = Zone.current.wrap(elt[onproperty], source);
                    bound[unboundKey] = elt[onproperty];
                    elt[onproperty] = bound;
                }
                elt = elt.parentElement;
            }
        }, true);
    };
    for (var i = 0; i < eventNames.length; i++) {
        _loop_1(i);
    }
    
}

function patchTimer(window, setName, cancelName, nameSuffix) {
    var setNative = null;
    var clearNative = null;
    setName += nameSuffix;
    cancelName += nameSuffix;
    function scheduleTask(task) {
        var data = task.data;
        data.args[0] = task.invoke;
        data.handleId = setNative.apply(window, data.args);
        return task;
    }
    function clearTask(task) {
        return clearNative(task.data.handleId);
    }
    setNative = patchMethod(window, setName, function (delegate) { return function (self, args) {
        if (typeof args[0] === 'function') {
            var zone = Zone.current;
            var options = {
                handleId: null,
                isPeriodic: nameSuffix === 'Interval',
                delay: (nameSuffix === 'Timeout' || nameSuffix === 'Interval') ? args[1] || 0 : null,
                args: args
            };
            var task = zone.scheduleMacroTask(setName, args[0], options, scheduleTask, clearTask);
            if (!task) {
                return task;
            }
            // Node.js must additionally support the ref and unref functions.
            var handle = task.data.handleId;
            if (handle.ref && handle.unref) {
                task.ref = handle.ref.bind(handle);
                task.unref = handle.unref.bind(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 task = args[0];
        if (task && typeof task.type === 'string') {
            if (task.cancelFn && task.data.isPeriodic || task.runCount === 0) {
                // Do not cancel already canceled functions
                task.zone.cancelTask(task);
            }
        }
        else {
            // cause an error by calling it directly.
            delegate.apply(window, args);
        }
    }; });
}

var set = 'set';
var clear = 'clear';
var blockingMethods = ['alert', 'prompt', 'confirm'];
var _global = typeof window === 'object' && window || typeof self === 'object' && self || global;
patchTimer(_global, set, clear, 'Timeout');
patchTimer(_global, set, clear, 'Interval');
patchTimer(_global, set, clear, 'Immediate');
patchTimer(_global, 'request', 'cancel', 'AnimationFrame');
patchTimer(_global, 'mozRequest', 'mozCancel', 'AnimationFrame');
patchTimer(_global, 'webkitRequest', 'webkitCancel', 'AnimationFrame');
for (var i = 0; i < blockingMethods.length; i++) {
    var name = blockingMethods[i];
    patchMethod(_global, name, function (delegate, symbol, name) {
        return function (s, args) {
            return Zone.current.run(delegate, _global, args, name);
        };
    });
}
eventTargetPatch(_global);
propertyDescriptorPatch(_global);
patchClass('MutationObserver');
patchClass('WebKitMutationObserver');
patchClass('FileReader');
propertyPatch();
registerElementPatch(_global);
// Treat XMLHTTPRequest as a macrotask.
patchXHR(_global);
var XHR_TASK = zoneSymbol('xhrTask');
var XHR_SYNC = zoneSymbol('xhrSync');
function patchXHR(window) {
    function findPendingTask(target) {
        var pendingTask = target[XHR_TASK];
        return pendingTask;
    }
    function scheduleTask(task) {
        var data = task.data;
        data.target.addEventListener('readystatechange', function () {
            if (data.target.readyState === data.target.DONE) {
                if (!data.aborted) {
                    task.invoke();
                }
            }
        });
        var storedTask = data.target[XHR_TASK];
        if (!storedTask) {
            data.target[XHR_TASK] = task;
        }
        sendNative.apply(data.target, data.args);
        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(window.XMLHttpRequest.prototype, 'open', function () { return function (self, args) {
        self[XHR_SYNC] = args[2] == false;
        return openNative.apply(self, args);
    }; });
    var sendNative = patchMethod(window.XMLHttpRequest.prototype, 'send', function () { return function (self, args) {
        var zone = Zone.current;
        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,
                isPeriodic: false,
                delay: null,
                args: args,
                aborted: false
            };
            return zone.scheduleMacroTask('XMLHttpRequest.send', placeholderCallback, options, scheduleTask, clearTask);
        }
    }; });
    var abortNative = patchMethod(window.XMLHttpRequest.prototype, 'abort', function (delegate) { return function (self, args) {
        var task = findPendingTask(self);
        if (task && typeof task.type == 'string') {
            // If the XHR has already completed, do nothing.
            if (task.cancelFn == null) {
                return;
            }
            task.zone.cancelTask(task);
        }
        // Otherwise, we are trying to abort an XHR which has not yet been sent, so there is no task to cancel. Do nothing.
    }; });
}
/// GEO_LOCATION
if (_global['navigator'] && _global['navigator'].geolocation) {
    patchPrototype(_global['navigator'].geolocation, [
        'getCurrentPosition',
        'watchPosition'
    ]);
}

})));