(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
    typeof define === 'function' && define.amd ? define('rxjs', ['exports'], factory) :
    (factory((global.rxjs = {})));
}(this, (function (exports) { 'use strict';

    /*! *****************************************************************************
    Copyright (c) Microsoft Corporation. All rights reserved.
    Licensed under the Apache License, Version 2.0 (the "License"); you may not use
    this file except in compliance with the License. You may obtain a copy of the
    License at http://www.apache.org/licenses/LICENSE-2.0

    THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
    WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
    MERCHANTABLITY OR NON-INFRINGEMENT.

    See the Apache Version 2.0 License for specific language governing permissions
    and limitations under the License.
    ***************************************************************************** */
    /* global Reflect, Promise */

    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };

    function __extends(d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    }

    var __assign = Object.assign || function __assign(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;
    };

    function __rest(s, e) {
        var t = {};
        for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
            t[p] = s[p];
        if (s != null && typeof Object.getOwnPropertySymbols === "function")
            for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
                t[p[i]] = s[p[i]];
        return t;
    }

    function isFunction(x) {
        return typeof x === 'function';
    }

    var _enable_super_gross_mode_that_will_cause_bad_things = false;
    var config = {
        Promise: undefined,
        set useDeprecatedSynchronousErrorHandling(value) {
            if (value) {
                var error = new Error();
                console.warn('DEPRECATED! RxJS was set to use deprecated synchronous error handling behavior by code at: \n' + error.stack);
            }
            else if (_enable_super_gross_mode_that_will_cause_bad_things) {
                console.log('RxJS: Back to a better error behavior. Thank you. <3');
            }
            _enable_super_gross_mode_that_will_cause_bad_things = value;
        },
        get useDeprecatedSynchronousErrorHandling() {
            return _enable_super_gross_mode_that_will_cause_bad_things;
        },
    };

    function hostReportError(err) {
        setTimeout(function () { throw err; }, 0);
    }

    var empty = {
        closed: true,
        next: function (value) { },
        error: function (err) {
            if (config.useDeprecatedSynchronousErrorHandling) {
                throw err;
            }
            else {
                hostReportError(err);
            }
        },
        complete: function () { }
    };

    var isArray = (function () { return Array.isArray || (function (x) { return x && typeof x.length === 'number'; }); })();

    function isObject(x) {
        return x !== null && typeof x === 'object';
    }

    var UnsubscriptionErrorImpl = (function () {
        function UnsubscriptionErrorImpl(errors) {
            Error.call(this);
            this.message = errors ?
                errors.length + " errors occurred during unsubscription:\n" + errors.map(function (err, i) { return i + 1 + ") " + err.toString(); }).join('\n  ') : '';
            this.name = 'UnsubscriptionError';
            this.errors = errors;
            return this;
        }
        UnsubscriptionErrorImpl.prototype = Object.create(Error.prototype);
        return UnsubscriptionErrorImpl;
    })();
    var UnsubscriptionError = UnsubscriptionErrorImpl;

    var Subscription = (function () {
        function Subscription(unsubscribe) {
            this.closed = false;
            this._parentOrParents = null;
            this._subscriptions = null;
            if (unsubscribe) {
                this._ctorUnsubscribe = true;
                this._unsubscribe = unsubscribe;
            }
        }
        Subscription.prototype.unsubscribe = function () {
            var errors;
            if (this.closed) {
                return;
            }
            var _a = this, _parentOrParents = _a._parentOrParents, _ctorUnsubscribe = _a._ctorUnsubscribe, _unsubscribe = _a._unsubscribe, _subscriptions = _a._subscriptions;
            this.closed = true;
            this._parentOrParents = null;
            this._subscriptions = null;
            if (_parentOrParents instanceof Subscription) {
                _parentOrParents.remove(this);
            }
            else if (_parentOrParents !== null) {
                for (var index = 0; index < _parentOrParents.length; ++index) {
                    var parent_1 = _parentOrParents[index];
                    parent_1.remove(this);
                }
            }
            if (isFunction(_unsubscribe)) {
                if (_ctorUnsubscribe) {
                    this._unsubscribe = undefined;
                }
                try {
                    _unsubscribe.call(this);
                }
                catch (e) {
                    errors = e instanceof UnsubscriptionError ? flattenUnsubscriptionErrors(e.errors) : [e];
                }
            }
            if (isArray(_subscriptions)) {
                var index = -1;
                var len = _subscriptions.length;
                while (++index < len) {
                    var sub = _subscriptions[index];
                    if (isObject(sub)) {
                        try {
                            sub.unsubscribe();
                        }
                        catch (e) {
                            errors = errors || [];
                            if (e instanceof UnsubscriptionError) {
                                errors = errors.concat(flattenUnsubscriptionErrors(e.errors));
                            }
                            else {
                                errors.push(e);
                            }
                        }
                    }
                }
            }
            if (errors) {
                throw new UnsubscriptionError(errors);
            }
        };
        Subscription.prototype.add = function (teardown) {
            var subscription = teardown;
            if (!teardown) {
                return Subscription.EMPTY;
            }
            switch (typeof teardown) {
                case 'function':
                    subscription = new Subscription(teardown);
                case 'object':
                    if (subscription === this || subscription.closed || typeof subscription.unsubscribe !== 'function') {
                        return subscription;
                    }
                    else if (this.closed) {
                        subscription.unsubscribe();
                        return subscription;
                    }
                    else if (!(subscription instanceof Subscription)) {
                        var tmp = subscription;
                        subscription = new Subscription();
                        subscription._subscriptions = [tmp];
                    }
                    break;
                default: {
                    throw new Error('unrecognized teardown ' + teardown + ' added to Subscription.');
                }
            }
            var _parentOrParents = subscription._parentOrParents;
            if (_parentOrParents === null) {
                subscription._parentOrParents = this;
            }
            else if (_parentOrParents instanceof Subscription) {
                if (_parentOrParents === this) {
                    return subscription;
                }
                subscription._parentOrParents = [_parentOrParents, this];
            }
            else if (_parentOrParents.indexOf(this) === -1) {
                _parentOrParents.push(this);
            }
            else {
                return subscription;
            }
            var subscriptions = this._subscriptions;
            if (subscriptions === null) {
                this._subscriptions = [subscription];
            }
            else {
                subscriptions.push(subscription);
            }
            return subscription;
        };
        Subscription.prototype.remove = function (subscription) {
            var subscriptions = this._subscriptions;
            if (subscriptions) {
                var subscriptionIndex = subscriptions.indexOf(subscription);
                if (subscriptionIndex !== -1) {
                    subscriptions.splice(subscriptionIndex, 1);
                }
            }
        };
        Subscription.EMPTY = (function (empty) {
            empty.closed = true;
            return empty;
        }(new Subscription()));
        return Subscription;
    }());
    function flattenUnsubscriptionErrors(errors) {
        return errors.reduce(function (errs, err) { return errs.concat((err instanceof UnsubscriptionError) ? err.errors : err); }, []);
    }

    var rxSubscriber = (function () {
        return typeof Symbol === 'function'
            ? Symbol('rxSubscriber')
            : '@@rxSubscriber_' + Math.random();
    })();

    var Subscriber = (function (_super) {
        __extends(Subscriber, _super);
        function Subscriber(destinationOrNext, error, complete) {
            var _this = _super.call(this) || this;
            _this.syncErrorValue = null;
            _this.syncErrorThrown = false;
            _this.syncErrorThrowable = false;
            _this.isStopped = false;
            switch (arguments.length) {
                case 0:
                    _this.destination = empty;
                    break;
                case 1:
                    if (!destinationOrNext) {
                        _this.destination = empty;
                        break;
                    }
                    if (typeof destinationOrNext === 'object') {
                        if (destinationOrNext instanceof Subscriber) {
                            _this.syncErrorThrowable = destinationOrNext.syncErrorThrowable;
                            _this.destination = destinationOrNext;
                            destinationOrNext.add(_this);
                        }
                        else {
                            _this.syncErrorThrowable = true;
                            _this.destination = new SafeSubscriber(_this, destinationOrNext);
                        }
                        break;
                    }
                default:
                    _this.syncErrorThrowable = true;
                    _this.destination = new SafeSubscriber(_this, destinationOrNext, error, complete);
                    break;
            }
            return _this;
        }
        Subscriber.prototype[rxSubscriber] = function () { return this; };
        Subscriber.create = function (next, error, complete) {
            var subscriber = new Subscriber(next, error, complete);
            subscriber.syncErrorThrowable = false;
            return subscriber;
        };
        Subscriber.prototype.next = function (value) {
            if (!this.isStopped) {
                this._next(value);
            }
        };
        Subscriber.prototype.error = function (err) {
            if (!this.isStopped) {
                this.isStopped = true;
                this._error(err);
            }
        };
        Subscriber.prototype.complete = function () {
            if (!this.isStopped) {
                this.isStopped = true;
                this._complete();
            }
        };
        Subscriber.prototype.unsubscribe = function () {
            if (this.closed) {
                return;
            }
            this.isStopped = true;
            _super.prototype.unsubscribe.call(this);
        };
        Subscriber.prototype._next = function (value) {
            this.destination.next(value);
        };
        Subscriber.prototype._error = function (err) {
            this.destination.error(err);
            this.unsubscribe();
        };
        Subscriber.prototype._complete = function () {
            this.destination.complete();
            this.unsubscribe();
        };
        Subscriber.prototype._unsubscribeAndRecycle = function () {
            var _parentOrParents = this._parentOrParents;
            this._parentOrParents = null;
            this.unsubscribe();
            this.closed = false;
            this.isStopped = false;
            this._parentOrParents = _parentOrParents;
            return this;
        };
        return Subscriber;
    }(Subscription));
    var SafeSubscriber = (function (_super) {
        __extends(SafeSubscriber, _super);
        function SafeSubscriber(_parentSubscriber, observerOrNext, error, complete) {
            var _this = _super.call(this) || this;
            _this._parentSubscriber = _parentSubscriber;
            var next;
            var context = _this;
            if (isFunction(observerOrNext)) {
                next = observerOrNext;
            }
            else if (observerOrNext) {
                next = observerOrNext.next;
                error = observerOrNext.error;
                complete = observerOrNext.complete;
                if (observerOrNext !== empty) {
                    context = Object.create(observerOrNext);
                    if (isFunction(context.unsubscribe)) {
                        _this.add(context.unsubscribe.bind(context));
                    }
                    context.unsubscribe = _this.unsubscribe.bind(_this);
                }
            }
            _this._context = context;
            _this._next = next;
            _this._error = error;
            _this._complete = complete;
            return _this;
        }
        SafeSubscriber.prototype.next = function (value) {
            if (!this.isStopped && this._next) {
                var _parentSubscriber = this._parentSubscriber;
                if (!config.useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {
                    this.__tryOrUnsub(this._next, value);
                }
                else if (this.__tryOrSetError(_parentSubscriber, this._next, value)) {
                    this.unsubscribe();
                }
            }
        };
        SafeSubscriber.prototype.error = function (err) {
            if (!this.isStopped) {
                var _parentSubscriber = this._parentSubscriber;
                var useDeprecatedSynchronousErrorHandling = config.useDeprecatedSynchronousErrorHandling;
                if (this._error) {
                    if (!useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {
                        this.__tryOrUnsub(this._error, err);
                        this.unsubscribe();
                    }
                    else {
                        this.__tryOrSetError(_parentSubscriber, this._error, err);
                        this.unsubscribe();
                    }
                }
                else if (!_parentSubscriber.syncErrorThrowable) {
                    this.unsubscribe();
                    if (useDeprecatedSynchronousErrorHandling) {
                        throw err;
                    }
                    hostReportError(err);
                }
                else {
                    if (useDeprecatedSynchronousErrorHandling) {
                        _parentSubscriber.syncErrorValue = err;
                        _parentSubscriber.syncErrorThrown = true;
                    }
                    else {
                        hostReportError(err);
                    }
                    this.unsubscribe();
                }
            }
        };
        SafeSubscriber.prototype.complete = function () {
            var _this = this;
            if (!this.isStopped) {
                var _parentSubscriber = this._parentSubscriber;
                if (this._complete) {
                    var wrappedComplete = function () { return _this._complete.call(_this._context); };
                    if (!config.useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {
                        this.__tryOrUnsub(wrappedComplete);
                        this.unsubscribe();
                    }
                    else {
                        this.__tryOrSetError(_parentSubscriber, wrappedComplete);
                        this.unsubscribe();
                    }
                }
                else {
                    this.unsubscribe();
                }
            }
        };
        SafeSubscriber.prototype.__tryOrUnsub = function (fn, value) {
            try {
                fn.call(this._context, value);
            }
            catch (err) {
                this.unsubscribe();
                if (config.useDeprecatedSynchronousErrorHandling) {
                    throw err;
                }
                else {
                    hostReportError(err);
                }
            }
        };
        SafeSubscriber.prototype.__tryOrSetError = function (parent, fn, value) {
            if (!config.useDeprecatedSynchronousErrorHandling) {
                throw new Error('bad call');
            }
            try {
                fn.call(this._context, value);
            }
            catch (err) {
                if (config.useDeprecatedSynchronousErrorHandling) {
                    parent.syncErrorValue = err;
                    parent.syncErrorThrown = true;
                    return true;
                }
                else {
                    hostReportError(err);
                    return true;
                }
            }
            return false;
        };
        SafeSubscriber.prototype._unsubscribe = function () {
            var _parentSubscriber = this._parentSubscriber;
            this._context = null;
            this._parentSubscriber = null;
            _parentSubscriber.unsubscribe();
        };
        return SafeSubscriber;
    }(Subscriber));

    function canReportError(observer) {
        while (observer) {
            var _a = observer, closed_1 = _a.closed, destination = _a.destination, isStopped = _a.isStopped;
            if (closed_1 || isStopped) {
                return false;
            }
            else if (destination && destination instanceof Subscriber) {
                observer = destination;
            }
            else {
                observer = null;
            }
        }
        return true;
    }

    function toSubscriber(nextOrObserver, error, complete) {
        if (nextOrObserver) {
            if (nextOrObserver instanceof Subscriber) {
                return nextOrObserver;
            }
            if (nextOrObserver[rxSubscriber]) {
                return nextOrObserver[rxSubscriber]();
            }
        }
        if (!nextOrObserver && !error && !complete) {
            return new Subscriber(empty);
        }
        return new Subscriber(nextOrObserver, error, complete);
    }

    var observable = (function () { return typeof Symbol === 'function' && Symbol.observable || '@@observable'; })();

    function identity(x) {
        return x;
    }

    function pipe() {
        var fns = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            fns[_i] = arguments[_i];
        }
        return pipeFromArray(fns);
    }
    function pipeFromArray(fns) {
        if (fns.length === 0) {
            return identity;
        }
        if (fns.length === 1) {
            return fns[0];
        }
        return function piped(input) {
            return fns.reduce(function (prev, fn) { return fn(prev); }, input);
        };
    }

    var Observable = (function () {
        function Observable(subscribe) {
            this._isScalar = false;
            if (subscribe) {
                this._subscribe = subscribe;
            }
        }
        Observable.prototype.lift = function (operator) {
            var observable$$1 = new Observable();
            observable$$1.source = this;
            observable$$1.operator = operator;
            return observable$$1;
        };
        Observable.prototype.subscribe = function (observerOrNext, error, complete) {
            var operator = this.operator;
            var sink = toSubscriber(observerOrNext, error, complete);
            if (operator) {
                sink.add(operator.call(sink, this.source));
            }
            else {
                sink.add(this.source || (config.useDeprecatedSynchronousErrorHandling && !sink.syncErrorThrowable) ?
                    this._subscribe(sink) :
                    this._trySubscribe(sink));
            }
            if (config.useDeprecatedSynchronousErrorHandling) {
                if (sink.syncErrorThrowable) {
                    sink.syncErrorThrowable = false;
                    if (sink.syncErrorThrown) {
                        throw sink.syncErrorValue;
                    }
                }
            }
            return sink;
        };
        Observable.prototype._trySubscribe = function (sink) {
            try {
                return this._subscribe(sink);
            }
            catch (err) {
                if (config.useDeprecatedSynchronousErrorHandling) {
                    sink.syncErrorThrown = true;
                    sink.syncErrorValue = err;
                }
                if (canReportError(sink)) {
                    sink.error(err);
                }
                else {
                    console.warn(err);
                }
            }
        };
        Observable.prototype.forEach = function (next, promiseCtor) {
            var _this = this;
            promiseCtor = getPromiseCtor(promiseCtor);
            return new promiseCtor(function (resolve, reject) {
                var subscription;
                subscription = _this.subscribe(function (value) {
                    try {
                        next(value);
                    }
                    catch (err) {
                        reject(err);
                        if (subscription) {
                            subscription.unsubscribe();
                        }
                    }
                }, reject, resolve);
            });
        };
        Observable.prototype._subscribe = function (subscriber) {
            var source = this.source;
            return source && source.subscribe(subscriber);
        };
        Observable.prototype[observable] = function () {
            return this;
        };
        Observable.prototype.pipe = function () {
            var operations = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                operations[_i] = arguments[_i];
            }
            if (operations.length === 0) {
                return this;
            }
            return pipeFromArray(operations)(this);
        };
        Observable.prototype.toPromise = function (promiseCtor) {
            var _this = this;
            promiseCtor = getPromiseCtor(promiseCtor);
            return new promiseCtor(function (resolve, reject) {
                var value;
                _this.subscribe(function (x) { return value = x; }, function (err) { return reject(err); }, function () { return resolve(value); });
            });
        };
        Observable.create = function (subscribe) {
            return new Observable(subscribe);
        };
        return Observable;
    }());
    function getPromiseCtor(promiseCtor) {
        if (!promiseCtor) {
            promiseCtor = config.Promise || Promise;
        }
        if (!promiseCtor) {
            throw new Error('no Promise impl found');
        }
        return promiseCtor;
    }

    var ObjectUnsubscribedErrorImpl = (function () {
        function ObjectUnsubscribedErrorImpl() {
            Error.call(this);
            this.message = 'object unsubscribed';
            this.name = 'ObjectUnsubscribedError';
            return this;
        }
        ObjectUnsubscribedErrorImpl.prototype = Object.create(Error.prototype);
        return ObjectUnsubscribedErrorImpl;
    })();
    var ObjectUnsubscribedError = ObjectUnsubscribedErrorImpl;

    var SubjectSubscription = (function (_super) {
        __extends(SubjectSubscription, _super);
        function SubjectSubscription(subject, subscriber) {
            var _this = _super.call(this) || this;
            _this.subject = subject;
            _this.subscriber = subscriber;
            _this.closed = false;
            return _this;
        }
        SubjectSubscription.prototype.unsubscribe = function () {
            if (this.closed) {
                return;
            }
            this.closed = true;
            var subject = this.subject;
            var observers = subject.observers;
            this.subject = null;
            if (!observers || observers.length === 0 || subject.isStopped || subject.closed) {
                return;
            }
            var subscriberIndex = observers.indexOf(this.subscriber);
            if (subscriberIndex !== -1) {
                observers.splice(subscriberIndex, 1);
            }
        };
        return SubjectSubscription;
    }(Subscription));

    var SubjectSubscriber = (function (_super) {
        __extends(SubjectSubscriber, _super);
        function SubjectSubscriber(destination) {
            var _this = _super.call(this, destination) || this;
            _this.destination = destination;
            return _this;
        }
        return SubjectSubscriber;
    }(Subscriber));
    var Subject = (function (_super) {
        __extends(Subject, _super);
        function Subject() {
            var _this = _super.call(this) || this;
            _this.observers = [];
            _this.closed = false;
            _this.isStopped = false;
            _this.hasError = false;
            _this.thrownError = null;
            return _this;
        }
        Subject.prototype[rxSubscriber] = function () {
            return new SubjectSubscriber(this);
        };
        Subject.prototype.lift = function (operator) {
            var subject = new AnonymousSubject(this, this);
            subject.operator = operator;
            return subject;
        };
        Subject.prototype.next = function (value) {
            if (this.closed) {
                throw new ObjectUnsubscribedError();
            }
            if (!this.isStopped) {
                var observers = this.observers;
                var len = observers.length;
                var copy = observers.slice();
                for (var i = 0; i < len; i++) {
                    copy[i].next(value);
                }
            }
        };
        Subject.prototype.error = function (err) {
            if (this.closed) {
                throw new ObjectUnsubscribedError();
            }
            this.hasError = true;
            this.thrownError = err;
            this.isStopped = true;
            var observers = this.observers;
            var len = observers.length;
            var copy = observers.slice();
            for (var i = 0; i < len; i++) {
                copy[i].error(err);
            }
            this.observers.length = 0;
        };
        Subject.prototype.complete = function () {
            if (this.closed) {
                throw new ObjectUnsubscribedError();
            }
            this.isStopped = true;
            var observers = this.observers;
            var len = observers.length;
            var copy = observers.slice();
            for (var i = 0; i < len; i++) {
                copy[i].complete();
            }
            this.observers.length = 0;
        };
        Subject.prototype.unsubscribe = function () {
            this.isStopped = true;
            this.closed = true;
            this.observers = null;
        };
        Subject.prototype._trySubscribe = function (subscriber) {
            if (this.closed) {
                throw new ObjectUnsubscribedError();
            }
            else {
                return _super.prototype._trySubscribe.call(this, subscriber);
            }
        };
        Subject.prototype._subscribe = function (subscriber) {
            if (this.closed) {
                throw new ObjectUnsubscribedError();
            }
            else if (this.hasError) {
                subscriber.error(this.thrownError);
                return Subscription.EMPTY;
            }
            else if (this.isStopped) {
                subscriber.complete();
                return Subscription.EMPTY;
            }
            else {
                this.observers.push(subscriber);
                return new SubjectSubscription(this, subscriber);
            }
        };
        Subject.prototype.asObservable = function () {
            var observable = new Observable();
            observable.source = this;
            return observable;
        };
        Subject.create = function (destination, source) {
            return new AnonymousSubject(destination, source);
        };
        return Subject;
    }(Observable));
    var AnonymousSubject = (function (_super) {
        __extends(AnonymousSubject, _super);
        function AnonymousSubject(destination, source) {
            var _this = _super.call(this) || this;
            _this.destination = destination;
            _this.source = source;
            return _this;
        }
        AnonymousSubject.prototype.next = function (value) {
            var destination = this.destination;
            if (destination && destination.next) {
                destination.next(value);
            }
        };
        AnonymousSubject.prototype.error = function (err) {
            var destination = this.destination;
            if (destination && destination.error) {
                this.destination.error(err);
            }
        };
        AnonymousSubject.prototype.complete = function () {
            var destination = this.destination;
            if (destination && destination.complete) {
                this.destination.complete();
            }
        };
        AnonymousSubject.prototype._subscribe = function (subscriber) {
            var source = this.source;
            if (source) {
                return this.source.subscribe(subscriber);
            }
            else {
                return Subscription.EMPTY;
            }
        };
        return AnonymousSubject;
    }(Subject));

    function refCount() {
        return function refCountOperatorFunction(source) {
            return source.lift(new RefCountOperator(source));
        };
    }
    var RefCountOperator = (function () {
        function RefCountOperator(connectable) {
            this.connectable = connectable;
        }
        RefCountOperator.prototype.call = function (subscriber, source) {
            var connectable = this.connectable;
            connectable._refCount++;
            var refCounter = new RefCountSubscriber(subscriber, connectable);
            var subscription = source.subscribe(refCounter);
            if (!refCounter.closed) {
                refCounter.connection = connectable.connect();
            }
            return subscription;
        };
        return RefCountOperator;
    }());
    var RefCountSubscriber = (function (_super) {
        __extends(RefCountSubscriber, _super);
        function RefCountSubscriber(destination, connectable) {
            var _this = _super.call(this, destination) || this;
            _this.connectable = connectable;
            return _this;
        }
        RefCountSubscriber.prototype._unsubscribe = function () {
            var connectable = this.connectable;
            if (!connectable) {
                this.connection = null;
                return;
            }
            this.connectable = null;
            var refCount = connectable._refCount;
            if (refCount <= 0) {
                this.connection = null;
                return;
            }
            connectable._refCount = refCount - 1;
            if (refCount > 1) {
                this.connection = null;
                return;
            }
            var connection = this.connection;
            var sharedConnection = connectable._connection;
            this.connection = null;
            if (sharedConnection && (!connection || sharedConnection === connection)) {
                sharedConnection.unsubscribe();
            }
        };
        return RefCountSubscriber;
    }(Subscriber));

    var ConnectableObservable = (function (_super) {
        __extends(ConnectableObservable, _super);
        function ConnectableObservable(source, subjectFactory) {
            var _this = _super.call(this) || this;
            _this.source = source;
            _this.subjectFactory = subjectFactory;
            _this._refCount = 0;
            _this._isComplete = false;
            return _this;
        }
        ConnectableObservable.prototype._subscribe = function (subscriber) {
            return this.getSubject().subscribe(subscriber);
        };
        ConnectableObservable.prototype.getSubject = function () {
            var subject = this._subject;
            if (!subject || subject.isStopped) {
                this._subject = this.subjectFactory();
            }
            return this._subject;
        };
        ConnectableObservable.prototype.connect = function () {
            var connection = this._connection;
            if (!connection) {
                this._isComplete = false;
                connection = this._connection = new Subscription();
                connection.add(this.source
                    .subscribe(new ConnectableSubscriber(this.getSubject(), this)));
                if (connection.closed) {
                    this._connection = null;
                    connection = Subscription.EMPTY;
                }
            }
            return connection;
        };
        ConnectableObservable.prototype.refCount = function () {
            return refCount()(this);
        };
        return ConnectableObservable;
    }(Observable));
    var connectableObservableDescriptor = (function () {
        var connectableProto = ConnectableObservable.prototype;
        return {
            operator: { value: null },
            _refCount: { value: 0, writable: true },
            _subject: { value: null, writable: true },
            _connection: { value: null, writable: true },
            _subscribe: { value: connectableProto._subscribe },
            _isComplete: { value: connectableProto._isComplete, writable: true },
            getSubject: { value: connectableProto.getSubject },
            connect: { value: connectableProto.connect },
            refCount: { value: connectableProto.refCount }
        };
    })();
    var ConnectableSubscriber = (function (_super) {
        __extends(ConnectableSubscriber, _super);
        function ConnectableSubscriber(destination, connectable) {
            var _this = _super.call(this, destination) || this;
            _this.connectable = connectable;
            return _this;
        }
        ConnectableSubscriber.prototype._error = function (err) {
            this._unsubscribe();
            _super.prototype._error.call(this, err);
        };
        ConnectableSubscriber.prototype._complete = function () {
            this.connectable._isComplete = true;
            this._unsubscribe();
            _super.prototype._complete.call(this);
        };
        ConnectableSubscriber.prototype._unsubscribe = function () {
            var connectable = this.connectable;
            if (connectable) {
                this.connectable = null;
                var connection = connectable._connection;
                connectable._refCount = 0;
                connectable._subject = null;
                connectable._connection = null;
                if (connection) {
                    connection.unsubscribe();
                }
            }
        };
        return ConnectableSubscriber;
    }(SubjectSubscriber));
    var RefCountSubscriber$1 = (function (_super) {
        __extends(RefCountSubscriber, _super);
        function RefCountSubscriber(destination, connectable) {
            var _this = _super.call(this, destination) || this;
            _this.connectable = connectable;
            return _this;
        }
        RefCountSubscriber.prototype._unsubscribe = function () {
            var connectable = this.connectable;
            if (!connectable) {
                this.connection = null;
                return;
            }
            this.connectable = null;
            var refCount$$1 = connectable._refCount;
            if (refCount$$1 <= 0) {
                this.connection = null;
                return;
            }
            connectable._refCount = refCount$$1 - 1;
            if (refCount$$1 > 1) {
                this.connection = null;
                return;
            }
            var connection = this.connection;
            var sharedConnection = connectable._connection;
            this.connection = null;
            if (sharedConnection && (!connection || sharedConnection === connection)) {
                sharedConnection.unsubscribe();
            }
        };
        return RefCountSubscriber;
    }(Subscriber));

    function groupBy(keySelector, elementSelector, durationSelector, subjectSelector) {
        return function (source) {
            return source.lift(new GroupByOperator(keySelector, elementSelector, durationSelector, subjectSelector));
        };
    }
    var GroupByOperator = (function () {
        function GroupByOperator(keySelector, elementSelector, durationSelector, subjectSelector) {
            this.keySelector = keySelector;
            this.elementSelector = elementSelector;
            this.durationSelector = durationSelector;
            this.subjectSelector = subjectSelector;
        }
        GroupByOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new GroupBySubscriber(subscriber, this.keySelector, this.elementSelector, this.durationSelector, this.subjectSelector));
        };
        return GroupByOperator;
    }());
    var GroupBySubscriber = (function (_super) {
        __extends(GroupBySubscriber, _super);
        function GroupBySubscriber(destination, keySelector, elementSelector, durationSelector, subjectSelector) {
            var _this = _super.call(this, destination) || this;
            _this.keySelector = keySelector;
            _this.elementSelector = elementSelector;
            _this.durationSelector = durationSelector;
            _this.subjectSelector = subjectSelector;
            _this.groups = null;
            _this.attemptedToUnsubscribe = false;
            _this.count = 0;
            return _this;
        }
        GroupBySubscriber.prototype._next = function (value) {
            var key;
            try {
                key = this.keySelector(value);
            }
            catch (err) {
                this.error(err);
                return;
            }
            this._group(value, key);
        };
        GroupBySubscriber.prototype._group = function (value, key) {
            var groups = this.groups;
            if (!groups) {
                groups = this.groups = new Map();
            }
            var group = groups.get(key);
            var element;
            if (this.elementSelector) {
                try {
                    element = this.elementSelector(value);
                }
                catch (err) {
                    this.error(err);
                }
            }
            else {
                element = value;
            }
            if (!group) {
                group = (this.subjectSelector ? this.subjectSelector() : new Subject());
                groups.set(key, group);
                var groupedObservable = new GroupedObservable(key, group, this);
                this.destination.next(groupedObservable);
                if (this.durationSelector) {
                    var duration = void 0;
                    try {
                        duration = this.durationSelector(new GroupedObservable(key, group));
                    }
                    catch (err) {
                        this.error(err);
                        return;
                    }
                    this.add(duration.subscribe(new GroupDurationSubscriber(key, group, this)));
                }
            }
            if (!group.closed) {
                group.next(element);
            }
        };
        GroupBySubscriber.prototype._error = function (err) {
            var groups = this.groups;
            if (groups) {
                groups.forEach(function (group, key) {
                    group.error(err);
                });
                groups.clear();
            }
            this.destination.error(err);
        };
        GroupBySubscriber.prototype._complete = function () {
            var groups = this.groups;
            if (groups) {
                groups.forEach(function (group, key) {
                    group.complete();
                });
                groups.clear();
            }
            this.destination.complete();
        };
        GroupBySubscriber.prototype.removeGroup = function (key) {
            this.groups.delete(key);
        };
        GroupBySubscriber.prototype.unsubscribe = function () {
            if (!this.closed) {
                this.attemptedToUnsubscribe = true;
                if (this.count === 0) {
                    _super.prototype.unsubscribe.call(this);
                }
            }
        };
        return GroupBySubscriber;
    }(Subscriber));
    var GroupDurationSubscriber = (function (_super) {
        __extends(GroupDurationSubscriber, _super);
        function GroupDurationSubscriber(key, group, parent) {
            var _this = _super.call(this, group) || this;
            _this.key = key;
            _this.group = group;
            _this.parent = parent;
            return _this;
        }
        GroupDurationSubscriber.prototype._next = function (value) {
            this.complete();
        };
        GroupDurationSubscriber.prototype._unsubscribe = function () {
            var _a = this, parent = _a.parent, key = _a.key;
            this.key = this.parent = null;
            if (parent) {
                parent.removeGroup(key);
            }
        };
        return GroupDurationSubscriber;
    }(Subscriber));
    var GroupedObservable = (function (_super) {
        __extends(GroupedObservable, _super);
        function GroupedObservable(key, groupSubject, refCountSubscription) {
            var _this = _super.call(this) || this;
            _this.key = key;
            _this.groupSubject = groupSubject;
            _this.refCountSubscription = refCountSubscription;
            return _this;
        }
        GroupedObservable.prototype._subscribe = function (subscriber) {
            var subscription = new Subscription();
            var _a = this, refCountSubscription = _a.refCountSubscription, groupSubject = _a.groupSubject;
            if (refCountSubscription && !refCountSubscription.closed) {
                subscription.add(new InnerRefCountSubscription(refCountSubscription));
            }
            subscription.add(groupSubject.subscribe(subscriber));
            return subscription;
        };
        return GroupedObservable;
    }(Observable));
    var InnerRefCountSubscription = (function (_super) {
        __extends(InnerRefCountSubscription, _super);
        function InnerRefCountSubscription(parent) {
            var _this = _super.call(this) || this;
            _this.parent = parent;
            parent.count++;
            return _this;
        }
        InnerRefCountSubscription.prototype.unsubscribe = function () {
            var parent = this.parent;
            if (!parent.closed && !this.closed) {
                _super.prototype.unsubscribe.call(this);
                parent.count -= 1;
                if (parent.count === 0 && parent.attemptedToUnsubscribe) {
                    parent.unsubscribe();
                }
            }
        };
        return InnerRefCountSubscription;
    }(Subscription));

    var BehaviorSubject = (function (_super) {
        __extends(BehaviorSubject, _super);
        function BehaviorSubject(_value) {
            var _this = _super.call(this) || this;
            _this._value = _value;
            return _this;
        }
        Object.defineProperty(BehaviorSubject.prototype, "value", {
            get: function () {
                return this.getValue();
            },
            enumerable: true,
            configurable: true
        });
        BehaviorSubject.prototype._subscribe = function (subscriber) {
            var subscription = _super.prototype._subscribe.call(this, subscriber);
            if (subscription && !subscription.closed) {
                subscriber.next(this._value);
            }
            return subscription;
        };
        BehaviorSubject.prototype.getValue = function () {
            if (this.hasError) {
                throw this.thrownError;
            }
            else if (this.closed) {
                throw new ObjectUnsubscribedError();
            }
            else {
                return this._value;
            }
        };
        BehaviorSubject.prototype.next = function (value) {
            _super.prototype.next.call(this, this._value = value);
        };
        return BehaviorSubject;
    }(Subject));

    var Action = (function (_super) {
        __extends(Action, _super);
        function Action(scheduler, work) {
            return _super.call(this) || this;
        }
        Action.prototype.schedule = function (state, delay) {
            if (delay === void 0) { delay = 0; }
            return this;
        };
        return Action;
    }(Subscription));

    var AsyncAction = (function (_super) {
        __extends(AsyncAction, _super);
        function AsyncAction(scheduler, work) {
            var _this = _super.call(this, scheduler, work) || this;
            _this.scheduler = scheduler;
            _this.work = work;
            _this.pending = false;
            return _this;
        }
        AsyncAction.prototype.schedule = function (state, delay) {
            if (delay === void 0) { delay = 0; }
            if (this.closed) {
                return this;
            }
            this.state = state;
            var id = this.id;
            var scheduler = this.scheduler;
            if (id != null) {
                this.id = this.recycleAsyncId(scheduler, id, delay);
            }
            this.pending = true;
            this.delay = delay;
            this.id = this.id || this.requestAsyncId(scheduler, this.id, delay);
            return this;
        };
        AsyncAction.prototype.requestAsyncId = function (scheduler, id, delay) {
            if (delay === void 0) { delay = 0; }
            return setInterval(scheduler.flush.bind(scheduler, this), delay);
        };
        AsyncAction.prototype.recycleAsyncId = function (scheduler, id, delay) {
            if (delay === void 0) { delay = 0; }
            if (delay !== null && this.delay === delay && this.pending === false) {
                return id;
            }
            clearInterval(id);
            return undefined;
        };
        AsyncAction.prototype.execute = function (state, delay) {
            if (this.closed) {
                return new Error('executing a cancelled action');
            }
            this.pending = false;
            var error = this._execute(state, delay);
            if (error) {
                return error;
            }
            else if (this.pending === false && this.id != null) {
                this.id = this.recycleAsyncId(this.scheduler, this.id, null);
            }
        };
        AsyncAction.prototype._execute = function (state, delay) {
            var errored = false;
            var errorValue = undefined;
            try {
                this.work(state);
            }
            catch (e) {
                errored = true;
                errorValue = !!e && e || new Error(e);
            }
            if (errored) {
                this.unsubscribe();
                return errorValue;
            }
        };
        AsyncAction.prototype._unsubscribe = function () {
            var id = this.id;
            var scheduler = this.scheduler;
            var actions = scheduler.actions;
            var index = actions.indexOf(this);
            this.work = null;
            this.state = null;
            this.pending = false;
            this.scheduler = null;
            if (index !== -1) {
                actions.splice(index, 1);
            }
            if (id != null) {
                this.id = this.recycleAsyncId(scheduler, id, null);
            }
            this.delay = null;
        };
        return AsyncAction;
    }(Action));

    var QueueAction = (function (_super) {
        __extends(QueueAction, _super);
        function QueueAction(scheduler, work) {
            var _this = _super.call(this, scheduler, work) || this;
            _this.scheduler = scheduler;
            _this.work = work;
            return _this;
        }
        QueueAction.prototype.schedule = function (state, delay) {
            if (delay === void 0) { delay = 0; }
            if (delay > 0) {
                return _super.prototype.schedule.call(this, state, delay);
            }
            this.delay = delay;
            this.state = state;
            this.scheduler.flush(this);
            return this;
        };
        QueueAction.prototype.execute = function (state, delay) {
            return (delay > 0 || this.closed) ?
                _super.prototype.execute.call(this, state, delay) :
                this._execute(state, delay);
        };
        QueueAction.prototype.requestAsyncId = function (scheduler, id, delay) {
            if (delay === void 0) { delay = 0; }
            if ((delay !== null && delay > 0) || (delay === null && this.delay > 0)) {
                return _super.prototype.requestAsyncId.call(this, scheduler, id, delay);
            }
            return scheduler.flush(this);
        };
        return QueueAction;
    }(AsyncAction));

    var Scheduler = (function () {
        function Scheduler(SchedulerAction, now) {
            if (now === void 0) { now = Scheduler.now; }
            this.SchedulerAction = SchedulerAction;
            this.now = now;
        }
        Scheduler.prototype.schedule = function (work, delay, state) {
            if (delay === void 0) { delay = 0; }
            return new this.SchedulerAction(this, work).schedule(state, delay);
        };
        Scheduler.now = function () { return Date.now(); };
        return Scheduler;
    }());

    var AsyncScheduler = (function (_super) {
        __extends(AsyncScheduler, _super);
        function AsyncScheduler(SchedulerAction, now) {
            if (now === void 0) { now = Scheduler.now; }
            var _this = _super.call(this, SchedulerAction, function () {
                if (AsyncScheduler.delegate && AsyncScheduler.delegate !== _this) {
                    return AsyncScheduler.delegate.now();
                }
                else {
                    return now();
                }
            }) || this;
            _this.actions = [];
            _this.active = false;
            _this.scheduled = undefined;
            return _this;
        }
        AsyncScheduler.prototype.schedule = function (work, delay, state) {
            if (delay === void 0) { delay = 0; }
            if (AsyncScheduler.delegate && AsyncScheduler.delegate !== this) {
                return AsyncScheduler.delegate.schedule(work, delay, state);
            }
            else {
                return _super.prototype.schedule.call(this, work, delay, state);
            }
        };
        AsyncScheduler.prototype.flush = function (action) {
            var actions = this.actions;
            if (this.active) {
                actions.push(action);
                return;
            }
            var error;
            this.active = true;
            do {
                if (error = action.execute(action.state, action.delay)) {
                    break;
                }
            } while (action = actions.shift());
            this.active = false;
            if (error) {
                while (action = actions.shift()) {
                    action.unsubscribe();
                }
                throw error;
            }
        };
        return AsyncScheduler;
    }(Scheduler));

    var QueueScheduler = (function (_super) {
        __extends(QueueScheduler, _super);
        function QueueScheduler() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        return QueueScheduler;
    }(AsyncScheduler));

    var queueScheduler = new QueueScheduler(QueueAction);
    var queue = queueScheduler;

    var EMPTY = new Observable(function (subscriber) { return subscriber.complete(); });
    function empty$1(scheduler) {
        return scheduler ? emptyScheduled(scheduler) : EMPTY;
    }
    function emptyScheduled(scheduler) {
        return new Observable(function (subscriber) { return scheduler.schedule(function () { return subscriber.complete(); }); });
    }

    function isScheduler(value) {
        return value && typeof value.schedule === 'function';
    }

    var subscribeToArray = function (array) { return function (subscriber) {
        for (var i = 0, len = array.length; i < len && !subscriber.closed; i++) {
            subscriber.next(array[i]);
        }
        subscriber.complete();
    }; };

    function scheduleArray(input, scheduler) {
        return new Observable(function (subscriber) {
            var sub = new Subscription();
            var i = 0;
            sub.add(scheduler.schedule(function () {
                if (i === input.length) {
                    subscriber.complete();
                    return;
                }
                subscriber.next(input[i++]);
                if (!subscriber.closed) {
                    sub.add(this.schedule());
                }
            }));
            return sub;
        });
    }

    function fromArray(input, scheduler) {
        if (!scheduler) {
            return new Observable(subscribeToArray(input));
        }
        else {
            return scheduleArray(input, scheduler);
        }
    }

    function of() {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        var scheduler = args[args.length - 1];
        if (isScheduler(scheduler)) {
            args.pop();
            return scheduleArray(args, scheduler);
        }
        else {
            return fromArray(args);
        }
    }

    function throwError(error, scheduler) {
        if (!scheduler) {
            return new Observable(function (subscriber) { return subscriber.error(error); });
        }
        else {
            return new Observable(function (subscriber) { return scheduler.schedule(dispatch, 0, { error: error, subscriber: subscriber }); });
        }
    }
    function dispatch(_a) {
        var error = _a.error, subscriber = _a.subscriber;
        subscriber.error(error);
    }

    (function (NotificationKind) {
        NotificationKind["NEXT"] = "N";
        NotificationKind["ERROR"] = "E";
        NotificationKind["COMPLETE"] = "C";
    })(exports.NotificationKind || (exports.NotificationKind = {}));
    var Notification = (function () {
        function Notification(kind, value, error) {
            this.kind = kind;
            this.value = value;
            this.error = error;
            this.hasValue = kind === 'N';
        }
        Notification.prototype.observe = function (observer) {
            switch (this.kind) {
                case 'N':
                    return observer.next && observer.next(this.value);
                case 'E':
                    return observer.error && observer.error(this.error);
                case 'C':
                    return observer.complete && observer.complete();
            }
        };
        Notification.prototype.do = function (next, error, complete) {
            var kind = this.kind;
            switch (kind) {
                case 'N':
                    return next && next(this.value);
                case 'E':
                    return error && error(this.error);
                case 'C':
                    return complete && complete();
            }
        };
        Notification.prototype.accept = function (nextOrObserver, error, complete) {
            if (nextOrObserver && typeof nextOrObserver.next === 'function') {
                return this.observe(nextOrObserver);
            }
            else {
                return this.do(nextOrObserver, error, complete);
            }
        };
        Notification.prototype.toObservable = function () {
            var kind = this.kind;
            switch (kind) {
                case 'N':
                    return of(this.value);
                case 'E':
                    return throwError(this.error);
                case 'C':
                    return empty$1();
            }
            throw new Error('unexpected notification kind value');
        };
        Notification.createNext = function (value) {
            if (typeof value !== 'undefined') {
                return new Notification('N', value);
            }
            return Notification.undefinedValueNotification;
        };
        Notification.createError = function (err) {
            return new Notification('E', undefined, err);
        };
        Notification.createComplete = function () {
            return Notification.completeNotification;
        };
        Notification.completeNotification = new Notification('C');
        Notification.undefinedValueNotification = new Notification('N', undefined);
        return Notification;
    }());

    function observeOn(scheduler, delay) {
        if (delay === void 0) { delay = 0; }
        return function observeOnOperatorFunction(source) {
            return source.lift(new ObserveOnOperator(scheduler, delay));
        };
    }
    var ObserveOnOperator = (function () {
        function ObserveOnOperator(scheduler, delay) {
            if (delay === void 0) { delay = 0; }
            this.scheduler = scheduler;
            this.delay = delay;
        }
        ObserveOnOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new ObserveOnSubscriber(subscriber, this.scheduler, this.delay));
        };
        return ObserveOnOperator;
    }());
    var ObserveOnSubscriber = (function (_super) {
        __extends(ObserveOnSubscriber, _super);
        function ObserveOnSubscriber(destination, scheduler, delay) {
            if (delay === void 0) { delay = 0; }
            var _this = _super.call(this, destination) || this;
            _this.scheduler = scheduler;
            _this.delay = delay;
            return _this;
        }
        ObserveOnSubscriber.dispatch = function (arg) {
            var notification = arg.notification, destination = arg.destination;
            notification.observe(destination);
            this.unsubscribe();
        };
        ObserveOnSubscriber.prototype.scheduleMessage = function (notification) {
            var destination = this.destination;
            destination.add(this.scheduler.schedule(ObserveOnSubscriber.dispatch, this.delay, new ObserveOnMessage(notification, this.destination)));
        };
        ObserveOnSubscriber.prototype._next = function (value) {
            this.scheduleMessage(Notification.createNext(value));
        };
        ObserveOnSubscriber.prototype._error = function (err) {
            this.scheduleMessage(Notification.createError(err));
            this.unsubscribe();
        };
        ObserveOnSubscriber.prototype._complete = function () {
            this.scheduleMessage(Notification.createComplete());
            this.unsubscribe();
        };
        return ObserveOnSubscriber;
    }(Subscriber));
    var ObserveOnMessage = (function () {
        function ObserveOnMessage(notification, destination) {
            this.notification = notification;
            this.destination = destination;
        }
        return ObserveOnMessage;
    }());

    var ReplaySubject = (function (_super) {
        __extends(ReplaySubject, _super);
        function ReplaySubject(bufferSize, windowTime, scheduler) {
            if (bufferSize === void 0) { bufferSize = Number.POSITIVE_INFINITY; }
            if (windowTime === void 0) { windowTime = Number.POSITIVE_INFINITY; }
            var _this = _super.call(this) || this;
            _this.scheduler = scheduler;
            _this._events = [];
            _this._infiniteTimeWindow = false;
            _this._bufferSize = bufferSize < 1 ? 1 : bufferSize;
            _this._windowTime = windowTime < 1 ? 1 : windowTime;
            if (windowTime === Number.POSITIVE_INFINITY) {
                _this._infiniteTimeWindow = true;
                _this.next = _this.nextInfiniteTimeWindow;
            }
            else {
                _this.next = _this.nextTimeWindow;
            }
            return _this;
        }
        ReplaySubject.prototype.nextInfiniteTimeWindow = function (value) {
            if (!this.isStopped) {
                var _events = this._events;
                _events.push(value);
                if (_events.length > this._bufferSize) {
                    _events.shift();
                }
            }
            _super.prototype.next.call(this, value);
        };
        ReplaySubject.prototype.nextTimeWindow = function (value) {
            if (!this.isStopped) {
                this._events.push(new ReplayEvent(this._getNow(), value));
                this._trimBufferThenGetEvents();
            }
            _super.prototype.next.call(this, value);
        };
        ReplaySubject.prototype._subscribe = function (subscriber) {
            var _infiniteTimeWindow = this._infiniteTimeWindow;
            var _events = _infiniteTimeWindow ? this._events : this._trimBufferThenGetEvents();
            var scheduler = this.scheduler;
            var len = _events.length;
            var subscription;
            if (this.closed) {
                throw new ObjectUnsubscribedError();
            }
            else if (this.isStopped || this.hasError) {
                subscription = Subscription.EMPTY;
            }
            else {
                this.observers.push(subscriber);
                subscription = new SubjectSubscription(this, subscriber);
            }
            if (scheduler) {
                subscriber.add(subscriber = new ObserveOnSubscriber(subscriber, scheduler));
            }
            if (_infiniteTimeWindow) {
                for (var i = 0; i < len && !subscriber.closed; i++) {
                    subscriber.next(_events[i]);
                }
            }
            else {
                for (var i = 0; i < len && !subscriber.closed; i++) {
                    subscriber.next(_events[i].value);
                }
            }
            if (this.hasError) {
                subscriber.error(this.thrownError);
            }
            else if (this.isStopped) {
                subscriber.complete();
            }
            return subscription;
        };
        ReplaySubject.prototype._getNow = function () {
            return (this.scheduler || queue).now();
        };
        ReplaySubject.prototype._trimBufferThenGetEvents = function () {
            var now = this._getNow();
            var _bufferSize = this._bufferSize;
            var _windowTime = this._windowTime;
            var _events = this._events;
            var eventsCount = _events.length;
            var spliceCount = 0;
            while (spliceCount < eventsCount) {
                if ((now - _events[spliceCount].time) < _windowTime) {
                    break;
                }
                spliceCount++;
            }
            if (eventsCount > _bufferSize) {
                spliceCount = Math.max(spliceCount, eventsCount - _bufferSize);
            }
            if (spliceCount > 0) {
                _events.splice(0, spliceCount);
            }
            return _events;
        };
        return ReplaySubject;
    }(Subject));
    var ReplayEvent = (function () {
        function ReplayEvent(time, value) {
            this.time = time;
            this.value = value;
        }
        return ReplayEvent;
    }());

    var AsyncSubject = (function (_super) {
        __extends(AsyncSubject, _super);
        function AsyncSubject() {
            var _this = _super !== null && _super.apply(this, arguments) || this;
            _this.value = null;
            _this.hasNext = false;
            _this.hasCompleted = false;
            return _this;
        }
        AsyncSubject.prototype._subscribe = function (subscriber) {
            if (this.hasError) {
                subscriber.error(this.thrownError);
                return Subscription.EMPTY;
            }
            else if (this.hasCompleted && this.hasNext) {
                subscriber.next(this.value);
                subscriber.complete();
                return Subscription.EMPTY;
            }
            return _super.prototype._subscribe.call(this, subscriber);
        };
        AsyncSubject.prototype.next = function (value) {
            if (!this.hasCompleted) {
                this.value = value;
                this.hasNext = true;
            }
        };
        AsyncSubject.prototype.error = function (error) {
            if (!this.hasCompleted) {
                _super.prototype.error.call(this, error);
            }
        };
        AsyncSubject.prototype.complete = function () {
            this.hasCompleted = true;
            if (this.hasNext) {
                _super.prototype.next.call(this, this.value);
            }
            _super.prototype.complete.call(this);
        };
        return AsyncSubject;
    }(Subject));

    var nextHandle = 1;
    var RESOLVED = (function () { return Promise.resolve(); })();
    var activeHandles = {};
    function findAndClearHandle(handle) {
        if (handle in activeHandles) {
            delete activeHandles[handle];
            return true;
        }
        return false;
    }
    var Immediate = {
        setImmediate: function (cb) {
            var handle = nextHandle++;
            activeHandles[handle] = true;
            RESOLVED.then(function () { return findAndClearHandle(handle) && cb(); });
            return handle;
        },
        clearImmediate: function (handle) {
            findAndClearHandle(handle);
        },
    };

    var AsapAction = (function (_super) {
        __extends(AsapAction, _super);
        function AsapAction(scheduler, work) {
            var _this = _super.call(this, scheduler, work) || this;
            _this.scheduler = scheduler;
            _this.work = work;
            return _this;
        }
        AsapAction.prototype.requestAsyncId = function (scheduler, id, delay) {
            if (delay === void 0) { delay = 0; }
            if (delay !== null && delay > 0) {
                return _super.prototype.requestAsyncId.call(this, scheduler, id, delay);
            }
            scheduler.actions.push(this);
            return scheduler.scheduled || (scheduler.scheduled = Immediate.setImmediate(scheduler.flush.bind(scheduler, null)));
        };
        AsapAction.prototype.recycleAsyncId = function (scheduler, id, delay) {
            if (delay === void 0) { delay = 0; }
            if ((delay !== null && delay > 0) || (delay === null && this.delay > 0)) {
                return _super.prototype.recycleAsyncId.call(this, scheduler, id, delay);
            }
            if (scheduler.actions.length === 0) {
                Immediate.clearImmediate(id);
                scheduler.scheduled = undefined;
            }
            return undefined;
        };
        return AsapAction;
    }(AsyncAction));

    var AsapScheduler = (function (_super) {
        __extends(AsapScheduler, _super);
        function AsapScheduler() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        AsapScheduler.prototype.flush = function (action) {
            this.active = true;
            this.scheduled = undefined;
            var actions = this.actions;
            var error;
            var index = -1;
            var count = actions.length;
            action = action || actions.shift();
            do {
                if (error = action.execute(action.state, action.delay)) {
                    break;
                }
            } while (++index < count && (action = actions.shift()));
            this.active = false;
            if (error) {
                while (++index < count && (action = actions.shift())) {
                    action.unsubscribe();
                }
                throw error;
            }
        };
        return AsapScheduler;
    }(AsyncScheduler));

    var asapScheduler = new AsapScheduler(AsapAction);
    var asap = asapScheduler;

    var asyncScheduler = new AsyncScheduler(AsyncAction);
    var async = asyncScheduler;

    var AnimationFrameAction = (function (_super) {
        __extends(AnimationFrameAction, _super);
        function AnimationFrameAction(scheduler, work) {
            var _this = _super.call(this, scheduler, work) || this;
            _this.scheduler = scheduler;
            _this.work = work;
            return _this;
        }
        AnimationFrameAction.prototype.requestAsyncId = function (scheduler, id, delay) {
            if (delay === void 0) { delay = 0; }
            if (delay !== null && delay > 0) {
                return _super.prototype.requestAsyncId.call(this, scheduler, id, delay);
            }
            scheduler.actions.push(this);
            return scheduler.scheduled || (scheduler.scheduled = requestAnimationFrame(function () { return scheduler.flush(null); }));
        };
        AnimationFrameAction.prototype.recycleAsyncId = function (scheduler, id, delay) {
            if (delay === void 0) { delay = 0; }
            if ((delay !== null && delay > 0) || (delay === null && this.delay > 0)) {
                return _super.prototype.recycleAsyncId.call(this, scheduler, id, delay);
            }
            if (scheduler.actions.length === 0) {
                cancelAnimationFrame(id);
                scheduler.scheduled = undefined;
            }
            return undefined;
        };
        return AnimationFrameAction;
    }(AsyncAction));

    var AnimationFrameScheduler = (function (_super) {
        __extends(AnimationFrameScheduler, _super);
        function AnimationFrameScheduler() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        AnimationFrameScheduler.prototype.flush = function (action) {
            this.active = true;
            this.scheduled = undefined;
            var actions = this.actions;
            var error;
            var index = -1;
            var count = actions.length;
            action = action || actions.shift();
            do {
                if (error = action.execute(action.state, action.delay)) {
                    break;
                }
            } while (++index < count && (action = actions.shift()));
            this.active = false;
            if (error) {
                while (++index < count && (action = actions.shift())) {
                    action.unsubscribe();
                }
                throw error;
            }
        };
        return AnimationFrameScheduler;
    }(AsyncScheduler));

    var animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);
    var animationFrame = animationFrameScheduler;

    var VirtualTimeScheduler = (function (_super) {
        __extends(VirtualTimeScheduler, _super);
        function VirtualTimeScheduler(SchedulerAction, maxFrames) {
            if (SchedulerAction === void 0) { SchedulerAction = VirtualAction; }
            if (maxFrames === void 0) { maxFrames = Number.POSITIVE_INFINITY; }
            var _this = _super.call(this, SchedulerAction, function () { return _this.frame; }) || this;
            _this.maxFrames = maxFrames;
            _this.frame = 0;
            _this.index = -1;
            return _this;
        }
        VirtualTimeScheduler.prototype.flush = function () {
            var _a = this, actions = _a.actions, maxFrames = _a.maxFrames;
            var error, action;
            while ((action = actions[0]) && action.delay <= maxFrames) {
                actions.shift();
                this.frame = action.delay;
                if (error = action.execute(action.state, action.delay)) {
                    break;
                }
            }
            if (error) {
                while (action = actions.shift()) {
                    action.unsubscribe();
                }
                throw error;
            }
        };
        VirtualTimeScheduler.frameTimeFactor = 10;
        return VirtualTimeScheduler;
    }(AsyncScheduler));
    var VirtualAction = (function (_super) {
        __extends(VirtualAction, _super);
        function VirtualAction(scheduler, work, index) {
            if (index === void 0) { index = scheduler.index += 1; }
            var _this = _super.call(this, scheduler, work) || this;
            _this.scheduler = scheduler;
            _this.work = work;
            _this.index = index;
            _this.active = true;
            _this.index = scheduler.index = index;
            return _this;
        }
        VirtualAction.prototype.schedule = function (state, delay) {
            if (delay === void 0) { delay = 0; }
            if (!this.id) {
                return _super.prototype.schedule.call(this, state, delay);
            }
            this.active = false;
            var action = new VirtualAction(this.scheduler, this.work);
            this.add(action);
            return action.schedule(state, delay);
        };
        VirtualAction.prototype.requestAsyncId = function (scheduler, id, delay) {
            if (delay === void 0) { delay = 0; }
            this.delay = scheduler.frame + delay;
            var actions = scheduler.actions;
            actions.push(this);
            actions.sort(VirtualAction.sortActions);
            return true;
        };
        VirtualAction.prototype.recycleAsyncId = function (scheduler, id, delay) {
            if (delay === void 0) { delay = 0; }
            return undefined;
        };
        VirtualAction.prototype._execute = function (state, delay) {
            if (this.active === true) {
                return _super.prototype._execute.call(this, state, delay);
            }
        };
        VirtualAction.sortActions = function (a, b) {
            if (a.delay === b.delay) {
                if (a.index === b.index) {
                    return 0;
                }
                else if (a.index > b.index) {
                    return 1;
                }
                else {
                    return -1;
                }
            }
            else if (a.delay > b.delay) {
                return 1;
            }
            else {
                return -1;
            }
        };
        return VirtualAction;
    }(AsyncAction));

    function noop() { }

    function isObservable(obj) {
        return !!obj && (obj instanceof Observable || (typeof obj.lift === 'function' && typeof obj.subscribe === 'function'));
    }

    var ArgumentOutOfRangeErrorImpl = (function () {
        function ArgumentOutOfRangeErrorImpl() {
            Error.call(this);
            this.message = 'argument out of range';
            this.name = 'ArgumentOutOfRangeError';
            return this;
        }
        ArgumentOutOfRangeErrorImpl.prototype = Object.create(Error.prototype);
        return ArgumentOutOfRangeErrorImpl;
    })();
    var ArgumentOutOfRangeError = ArgumentOutOfRangeErrorImpl;

    var EmptyErrorImpl = (function () {
        function EmptyErrorImpl() {
            Error.call(this);
            this.message = 'no elements in sequence';
            this.name = 'EmptyError';
            return this;
        }
        EmptyErrorImpl.prototype = Object.create(Error.prototype);
        return EmptyErrorImpl;
    })();
    var EmptyError = EmptyErrorImpl;

    var TimeoutErrorImpl = (function () {
        function TimeoutErrorImpl() {
            Error.call(this);
            this.message = 'Timeout has occurred';
            this.name = 'TimeoutError';
            return this;
        }
        TimeoutErrorImpl.prototype = Object.create(Error.prototype);
        return TimeoutErrorImpl;
    })();
    var TimeoutError = TimeoutErrorImpl;

    function map(project, thisArg) {
        return function mapOperation(source) {
            if (typeof project !== 'function') {
                throw new TypeError('argument is not a function. Are you looking for `mapTo()`?');
            }
            return source.lift(new MapOperator(project, thisArg));
        };
    }
    var MapOperator = (function () {
        function MapOperator(project, thisArg) {
            this.project = project;
            this.thisArg = thisArg;
        }
        MapOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new MapSubscriber(subscriber, this.project, this.thisArg));
        };
        return MapOperator;
    }());
    var MapSubscriber = (function (_super) {
        __extends(MapSubscriber, _super);
        function MapSubscriber(destination, project, thisArg) {
            var _this = _super.call(this, destination) || this;
            _this.project = project;
            _this.count = 0;
            _this.thisArg = thisArg || _this;
            return _this;
        }
        MapSubscriber.prototype._next = function (value) {
            var result;
            try {
                result = this.project.call(this.thisArg, value, this.count++);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            this.destination.next(result);
        };
        return MapSubscriber;
    }(Subscriber));

    function bindCallback(callbackFunc, resultSelector, scheduler) {
        if (resultSelector) {
            if (isScheduler(resultSelector)) {
                scheduler = resultSelector;
            }
            else {
                return function () {
                    var args = [];
                    for (var _i = 0; _i < arguments.length; _i++) {
                        args[_i] = arguments[_i];
                    }
                    return bindCallback(callbackFunc, scheduler).apply(void 0, args).pipe(map(function (args) { return isArray(args) ? resultSelector.apply(void 0, args) : resultSelector(args); }));
                };
            }
        }
        return function () {
            var args = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                args[_i] = arguments[_i];
            }
            var context = this;
            var subject;
            var params = {
                context: context,
                subject: subject,
                callbackFunc: callbackFunc,
                scheduler: scheduler,
            };
            return new Observable(function (subscriber) {
                if (!scheduler) {
                    if (!subject) {
                        subject = new AsyncSubject();
                        var handler = function () {
                            var innerArgs = [];
                            for (var _i = 0; _i < arguments.length; _i++) {
                                innerArgs[_i] = arguments[_i];
                            }
                            subject.next(innerArgs.length <= 1 ? innerArgs[0] : innerArgs);
                            subject.complete();
                        };
                        try {
                            callbackFunc.apply(context, args.concat([handler]));
                        }
                        catch (err) {
                            if (canReportError(subject)) {
                                subject.error(err);
                            }
                            else {
                                console.warn(err);
                            }
                        }
                    }
                    return subject.subscribe(subscriber);
                }
                else {
                    var state = {
                        args: args, subscriber: subscriber, params: params,
                    };
                    return scheduler.schedule(dispatch$1, 0, state);
                }
            });
        };
    }
    function dispatch$1(state) {
        var _this = this;
        var args = state.args, subscriber = state.subscriber, params = state.params;
        var callbackFunc = params.callbackFunc, context = params.context, scheduler = params.scheduler;
        var subject = params.subject;
        if (!subject) {
            subject = params.subject = new AsyncSubject();
            var handler = function () {
                var innerArgs = [];
                for (var _i = 0; _i < arguments.length; _i++) {
                    innerArgs[_i] = arguments[_i];
                }
                var value = innerArgs.length <= 1 ? innerArgs[0] : innerArgs;
                _this.add(scheduler.schedule(dispatchNext, 0, { value: value, subject: subject }));
            };
            try {
                callbackFunc.apply(context, args.concat([handler]));
            }
            catch (err) {
                subject.error(err);
            }
        }
        this.add(subject.subscribe(subscriber));
    }
    function dispatchNext(state) {
        var value = state.value, subject = state.subject;
        subject.next(value);
        subject.complete();
    }

    function bindNodeCallback(callbackFunc, resultSelector, scheduler) {
        if (resultSelector) {
            if (isScheduler(resultSelector)) {
                scheduler = resultSelector;
            }
            else {
                return function () {
                    var args = [];
                    for (var _i = 0; _i < arguments.length; _i++) {
                        args[_i] = arguments[_i];
                    }
                    return bindNodeCallback(callbackFunc, scheduler).apply(void 0, args).pipe(map(function (args) { return isArray(args) ? resultSelector.apply(void 0, args) : resultSelector(args); }));
                };
            }
        }
        return function () {
            var args = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                args[_i] = arguments[_i];
            }
            var params = {
                subject: undefined,
                args: args,
                callbackFunc: callbackFunc,
                scheduler: scheduler,
                context: this,
            };
            return new Observable(function (subscriber) {
                var context = params.context;
                var subject = params.subject;
                if (!scheduler) {
                    if (!subject) {
                        subject = params.subject = new AsyncSubject();
                        var handler = function () {
                            var innerArgs = [];
                            for (var _i = 0; _i < arguments.length; _i++) {
                                innerArgs[_i] = arguments[_i];
                            }
                            var err = innerArgs.shift();
                            if (err) {
                                subject.error(err);
                                return;
                            }
                            subject.next(innerArgs.length <= 1 ? innerArgs[0] : innerArgs);
                            subject.complete();
                        };
                        try {
                            callbackFunc.apply(context, args.concat([handler]));
                        }
                        catch (err) {
                            if (canReportError(subject)) {
                                subject.error(err);
                            }
                            else {
                                console.warn(err);
                            }
                        }
                    }
                    return subject.subscribe(subscriber);
                }
                else {
                    return scheduler.schedule(dispatch$2, 0, { params: params, subscriber: subscriber, context: context });
                }
            });
        };
    }
    function dispatch$2(state) {
        var _this = this;
        var params = state.params, subscriber = state.subscriber, context = state.context;
        var callbackFunc = params.callbackFunc, args = params.args, scheduler = params.scheduler;
        var subject = params.subject;
        if (!subject) {
            subject = params.subject = new AsyncSubject();
            var handler = function () {
                var innerArgs = [];
                for (var _i = 0; _i < arguments.length; _i++) {
                    innerArgs[_i] = arguments[_i];
                }
                var err = innerArgs.shift();
                if (err) {
                    _this.add(scheduler.schedule(dispatchError$1, 0, { err: err, subject: subject }));
                }
                else {
                    var value = innerArgs.length <= 1 ? innerArgs[0] : innerArgs;
                    _this.add(scheduler.schedule(dispatchNext$1, 0, { value: value, subject: subject }));
                }
            };
            try {
                callbackFunc.apply(context, args.concat([handler]));
            }
            catch (err) {
                this.add(scheduler.schedule(dispatchError$1, 0, { err: err, subject: subject }));
            }
        }
        this.add(subject.subscribe(subscriber));
    }
    function dispatchNext$1(arg) {
        var value = arg.value, subject = arg.subject;
        subject.next(value);
        subject.complete();
    }
    function dispatchError$1(arg) {
        var err = arg.err, subject = arg.subject;
        subject.error(err);
    }

    var OuterSubscriber = (function (_super) {
        __extends(OuterSubscriber, _super);
        function OuterSubscriber() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        OuterSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
            this.destination.next(innerValue);
        };
        OuterSubscriber.prototype.notifyError = function (error, innerSub) {
            this.destination.error(error);
        };
        OuterSubscriber.prototype.notifyComplete = function (innerSub) {
            this.destination.complete();
        };
        return OuterSubscriber;
    }(Subscriber));

    var InnerSubscriber = (function (_super) {
        __extends(InnerSubscriber, _super);
        function InnerSubscriber(parent, outerValue, outerIndex) {
            var _this = _super.call(this) || this;
            _this.parent = parent;
            _this.outerValue = outerValue;
            _this.outerIndex = outerIndex;
            _this.index = 0;
            return _this;
        }
        InnerSubscriber.prototype._next = function (value) {
            this.parent.notifyNext(this.outerValue, value, this.outerIndex, this.index++, this);
        };
        InnerSubscriber.prototype._error = function (error) {
            this.parent.notifyError(error, this);
            this.unsubscribe();
        };
        InnerSubscriber.prototype._complete = function () {
            this.parent.notifyComplete(this);
            this.unsubscribe();
        };
        return InnerSubscriber;
    }(Subscriber));

    var subscribeToPromise = function (promise) { return function (subscriber) {
        promise.then(function (value) {
            if (!subscriber.closed) {
                subscriber.next(value);
                subscriber.complete();
            }
        }, function (err) { return subscriber.error(err); })
            .then(null, hostReportError);
        return subscriber;
    }; };

    function getSymbolIterator() {
        if (typeof Symbol !== 'function' || !Symbol.iterator) {
            return '@@iterator';
        }
        return Symbol.iterator;
    }
    var iterator = getSymbolIterator();

    var subscribeToIterable = function (iterable) { return function (subscriber) {
        var iterator$$1 = iterable[iterator]();
        do {
            var item = void 0;
            try {
                item = iterator$$1.next();
            }
            catch (err) {
                subscriber.error(err);
                return subscriber;
            }
            if (item.done) {
                subscriber.complete();
                break;
            }
            subscriber.next(item.value);
            if (subscriber.closed) {
                break;
            }
        } while (true);
        if (typeof iterator$$1.return === 'function') {
            subscriber.add(function () {
                if (iterator$$1.return) {
                    iterator$$1.return();
                }
            });
        }
        return subscriber;
    }; };

    var subscribeToObservable = function (obj) { return function (subscriber) {
        var obs = obj[observable]();
        if (typeof obs.subscribe !== 'function') {
            throw new TypeError('Provided object does not correctly implement Symbol.observable');
        }
        else {
            return obs.subscribe(subscriber);
        }
    }; };

    var isArrayLike = (function (x) { return x && typeof x.length === 'number' && typeof x !== 'function'; });

    function isPromise(value) {
        return !!value && typeof value.subscribe !== 'function' && typeof value.then === 'function';
    }

    var subscribeTo = function (result) {
        if (!!result && typeof result[observable] === 'function') {
            return subscribeToObservable(result);
        }
        else if (isArrayLike(result)) {
            return subscribeToArray(result);
        }
        else if (isPromise(result)) {
            return subscribeToPromise(result);
        }
        else if (!!result && typeof result[iterator] === 'function') {
            return subscribeToIterable(result);
        }
        else {
            var value = isObject(result) ? 'an invalid object' : "'" + result + "'";
            var msg = "You provided " + value + " where a stream was expected."
                + ' You can provide an Observable, Promise, Array, or Iterable.';
            throw new TypeError(msg);
        }
    };

    function subscribeToResult(outerSubscriber, result, outerValue, outerIndex, innerSubscriber) {
        if (innerSubscriber === void 0) { innerSubscriber = new InnerSubscriber(outerSubscriber, outerValue, outerIndex); }
        if (innerSubscriber.closed) {
            return undefined;
        }
        if (result instanceof Observable) {
            return result.subscribe(innerSubscriber);
        }
        return subscribeTo(result)(innerSubscriber);
    }

    var NONE = {};
    function combineLatest() {
        var observables = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            observables[_i] = arguments[_i];
        }
        var resultSelector = undefined;
        var scheduler = undefined;
        if (isScheduler(observables[observables.length - 1])) {
            scheduler = observables.pop();
        }
        if (typeof observables[observables.length - 1] === 'function') {
            resultSelector = observables.pop();
        }
        if (observables.length === 1 && isArray(observables[0])) {
            observables = observables[0];
        }
        return fromArray(observables, scheduler).lift(new CombineLatestOperator(resultSelector));
    }
    var CombineLatestOperator = (function () {
        function CombineLatestOperator(resultSelector) {
            this.resultSelector = resultSelector;
        }
        CombineLatestOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new CombineLatestSubscriber(subscriber, this.resultSelector));
        };
        return CombineLatestOperator;
    }());
    var CombineLatestSubscriber = (function (_super) {
        __extends(CombineLatestSubscriber, _super);
        function CombineLatestSubscriber(destination, resultSelector) {
            var _this = _super.call(this, destination) || this;
            _this.resultSelector = resultSelector;
            _this.active = 0;
            _this.values = [];
            _this.observables = [];
            return _this;
        }
        CombineLatestSubscriber.prototype._next = function (observable) {
            this.values.push(NONE);
            this.observables.push(observable);
        };
        CombineLatestSubscriber.prototype._complete = function () {
            var observables = this.observables;
            var len = observables.length;
            if (len === 0) {
                this.destination.complete();
            }
            else {
                this.active = len;
                this.toRespond = len;
                for (var i = 0; i < len; i++) {
                    var observable = observables[i];
                    this.add(subscribeToResult(this, observable, undefined, i));
                }
            }
        };
        CombineLatestSubscriber.prototype.notifyComplete = function (unused) {
            if ((this.active -= 1) === 0) {
                this.destination.complete();
            }
        };
        CombineLatestSubscriber.prototype.notifyNext = function (_outerValue, innerValue, outerIndex) {
            var values = this.values;
            var oldVal = values[outerIndex];
            var toRespond = !this.toRespond
                ? 0
                : oldVal === NONE ? --this.toRespond : this.toRespond;
            values[outerIndex] = innerValue;
            if (toRespond === 0) {
                if (this.resultSelector) {
                    this._tryResultSelector(values);
                }
                else {
                    this.destination.next(values.slice());
                }
            }
        };
        CombineLatestSubscriber.prototype._tryResultSelector = function (values) {
            var result;
            try {
                result = this.resultSelector.apply(this, values);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            this.destination.next(result);
        };
        return CombineLatestSubscriber;
    }(OuterSubscriber));

    function scheduleObservable(input, scheduler) {
        return new Observable(function (subscriber) {
            var sub = new Subscription();
            sub.add(scheduler.schedule(function () {
                var observable$$1 = input[observable]();
                sub.add(observable$$1.subscribe({
                    next: function (value) { sub.add(scheduler.schedule(function () { return subscriber.next(value); })); },
                    error: function (err) { sub.add(scheduler.schedule(function () { return subscriber.error(err); })); },
                    complete: function () { sub.add(scheduler.schedule(function () { return subscriber.complete(); })); },
                }));
            }));
            return sub;
        });
    }

    function schedulePromise(input, scheduler) {
        return new Observable(function (subscriber) {
            var sub = new Subscription();
            sub.add(scheduler.schedule(function () { return input.then(function (value) {
                sub.add(scheduler.schedule(function () {
                    subscriber.next(value);
                    sub.add(scheduler.schedule(function () { return subscriber.complete(); }));
                }));
            }, function (err) {
                sub.add(scheduler.schedule(function () { return subscriber.error(err); }));
            }); }));
            return sub;
        });
    }

    function scheduleIterable(input, scheduler) {
        if (!input) {
            throw new Error('Iterable cannot be null');
        }
        return new Observable(function (subscriber) {
            var sub = new Subscription();
            var iterator$$1;
            sub.add(function () {
                if (iterator$$1 && typeof iterator$$1.return === 'function') {
                    iterator$$1.return();
                }
            });
            sub.add(scheduler.schedule(function () {
                iterator$$1 = input[iterator]();
                sub.add(scheduler.schedule(function () {
                    if (subscriber.closed) {
                        return;
                    }
                    var value;
                    var done;
                    try {
                        var result = iterator$$1.next();
                        value = result.value;
                        done = result.done;
                    }
                    catch (err) {
                        subscriber.error(err);
                        return;
                    }
                    if (done) {
                        subscriber.complete();
                    }
                    else {
                        subscriber.next(value);
                        this.schedule();
                    }
                }));
            }));
            return sub;
        });
    }

    function isInteropObservable(input) {
        return input && typeof input[observable] === 'function';
    }

    function isIterable(input) {
        return input && typeof input[iterator] === 'function';
    }

    function scheduled(input, scheduler) {
        if (input != null) {
            if (isInteropObservable(input)) {
                return scheduleObservable(input, scheduler);
            }
            else if (isPromise(input)) {
                return schedulePromise(input, scheduler);
            }
            else if (isArrayLike(input)) {
                return scheduleArray(input, scheduler);
            }
            else if (isIterable(input) || typeof input === 'string') {
                return scheduleIterable(input, scheduler);
            }
        }
        throw new TypeError((input !== null && typeof input || input) + ' is not observable');
    }

    function from(input, scheduler) {
        if (!scheduler) {
            if (input instanceof Observable) {
                return input;
            }
            return new Observable(subscribeTo(input));
        }
        else {
            return scheduled(input, scheduler);
        }
    }

    var SimpleInnerSubscriber = (function (_super) {
        __extends(SimpleInnerSubscriber, _super);
        function SimpleInnerSubscriber(parent) {
            var _this = _super.call(this) || this;
            _this.parent = parent;
            return _this;
        }
        SimpleInnerSubscriber.prototype._next = function (value) {
            this.parent.notifyNext(value);
        };
        SimpleInnerSubscriber.prototype._error = function (error) {
            this.parent.notifyError(error);
            this.unsubscribe();
        };
        SimpleInnerSubscriber.prototype._complete = function () {
            this.parent.notifyComplete();
            this.unsubscribe();
        };
        return SimpleInnerSubscriber;
    }(Subscriber));
    var ComplexInnerSubscriber = (function (_super) {
        __extends(ComplexInnerSubscriber, _super);
        function ComplexInnerSubscriber(parent, outerValue, outerIndex) {
            var _this = _super.call(this) || this;
            _this.parent = parent;
            _this.outerValue = outerValue;
            _this.outerIndex = outerIndex;
            return _this;
        }
        ComplexInnerSubscriber.prototype._next = function (value) {
            this.parent.notifyNext(this.outerValue, value, this.outerIndex, this);
        };
        ComplexInnerSubscriber.prototype._error = function (error) {
            this.parent.notifyError(error);
            this.unsubscribe();
        };
        ComplexInnerSubscriber.prototype._complete = function () {
            this.parent.notifyComplete(this);
            this.unsubscribe();
        };
        return ComplexInnerSubscriber;
    }(Subscriber));
    var SimpleOuterSubscriber = (function (_super) {
        __extends(SimpleOuterSubscriber, _super);
        function SimpleOuterSubscriber() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        SimpleOuterSubscriber.prototype.notifyNext = function (innerValue) {
            this.destination.next(innerValue);
        };
        SimpleOuterSubscriber.prototype.notifyError = function (err) {
            this.destination.error(err);
        };
        SimpleOuterSubscriber.prototype.notifyComplete = function () {
            this.destination.complete();
        };
        return SimpleOuterSubscriber;
    }(Subscriber));
    var ComplexOuterSubscriber = (function (_super) {
        __extends(ComplexOuterSubscriber, _super);
        function ComplexOuterSubscriber() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        ComplexOuterSubscriber.prototype.notifyNext = function (_outerValue, innerValue, _outerIndex, _innerSub) {
            this.destination.next(innerValue);
        };
        ComplexOuterSubscriber.prototype.notifyError = function (error) {
            this.destination.error(error);
        };
        ComplexOuterSubscriber.prototype.notifyComplete = function (_innerSub) {
            this.destination.complete();
        };
        return ComplexOuterSubscriber;
    }(Subscriber));
    function innerSubscribe(result, innerSubscriber) {
        if (innerSubscriber.closed) {
            return undefined;
        }
        if (result instanceof Observable) {
            return result.subscribe(innerSubscriber);
        }
        return subscribeTo(result)(innerSubscriber);
    }

    function mergeMap(project, resultSelector, concurrent) {
        if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
        if (typeof resultSelector === 'function') {
            return function (source) { return source.pipe(mergeMap(function (a, i) { return from(project(a, i)).pipe(map(function (b, ii) { return resultSelector(a, b, i, ii); })); }, concurrent)); };
        }
        else if (typeof resultSelector === 'number') {
            concurrent = resultSelector;
        }
        return function (source) { return source.lift(new MergeMapOperator(project, concurrent)); };
    }
    var MergeMapOperator = (function () {
        function MergeMapOperator(project, concurrent) {
            if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
            this.project = project;
            this.concurrent = concurrent;
        }
        MergeMapOperator.prototype.call = function (observer, source) {
            return source.subscribe(new MergeMapSubscriber(observer, this.project, this.concurrent));
        };
        return MergeMapOperator;
    }());
    var MergeMapSubscriber = (function (_super) {
        __extends(MergeMapSubscriber, _super);
        function MergeMapSubscriber(destination, project, concurrent) {
            if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
            var _this = _super.call(this, destination) || this;
            _this.project = project;
            _this.concurrent = concurrent;
            _this.hasCompleted = false;
            _this.buffer = [];
            _this.active = 0;
            _this.index = 0;
            return _this;
        }
        MergeMapSubscriber.prototype._next = function (value) {
            if (this.active < this.concurrent) {
                this._tryNext(value);
            }
            else {
                this.buffer.push(value);
            }
        };
        MergeMapSubscriber.prototype._tryNext = function (value) {
            var result;
            var index = this.index++;
            try {
                result = this.project(value, index);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            this.active++;
            this._innerSub(result);
        };
        MergeMapSubscriber.prototype._innerSub = function (ish) {
            var innerSubscriber = new SimpleInnerSubscriber(this);
            var destination = this.destination;
            destination.add(innerSubscriber);
            var innerSubscription = innerSubscribe(ish, innerSubscriber);
            if (innerSubscription !== innerSubscriber) {
                destination.add(innerSubscription);
            }
        };
        MergeMapSubscriber.prototype._complete = function () {
            this.hasCompleted = true;
            if (this.active === 0 && this.buffer.length === 0) {
                this.destination.complete();
            }
            this.unsubscribe();
        };
        MergeMapSubscriber.prototype.notifyNext = function (innerValue) {
            this.destination.next(innerValue);
        };
        MergeMapSubscriber.prototype.notifyComplete = function () {
            var buffer = this.buffer;
            this.active--;
            if (buffer.length > 0) {
                this._next(buffer.shift());
            }
            else if (this.active === 0 && this.hasCompleted) {
                this.destination.complete();
            }
        };
        return MergeMapSubscriber;
    }(SimpleOuterSubscriber));
    var flatMap = mergeMap;

    function mergeAll(concurrent) {
        if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
        return mergeMap(identity, concurrent);
    }

    function concatAll() {
        return mergeAll(1);
    }

    function concat() {
        var observables = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            observables[_i] = arguments[_i];
        }
        return concatAll()(of.apply(void 0, observables));
    }

    function defer(observableFactory) {
        return new Observable(function (subscriber) {
            var input;
            try {
                input = observableFactory();
            }
            catch (err) {
                subscriber.error(err);
                return undefined;
            }
            var source = input ? from(input) : empty$1();
            return source.subscribe(subscriber);
        });
    }

    function forkJoin() {
        var sources = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            sources[_i] = arguments[_i];
        }
        if (sources.length === 1) {
            var first_1 = sources[0];
            if (isArray(first_1)) {
                return forkJoinInternal(first_1, null);
            }
            if (isObject(first_1) && Object.getPrototypeOf(first_1) === Object.prototype) {
                var keys = Object.keys(first_1);
                return forkJoinInternal(keys.map(function (key) { return first_1[key]; }), keys);
            }
        }
        if (typeof sources[sources.length - 1] === 'function') {
            var resultSelector_1 = sources.pop();
            sources = (sources.length === 1 && isArray(sources[0])) ? sources[0] : sources;
            return forkJoinInternal(sources, null).pipe(map(function (args) { return resultSelector_1.apply(void 0, args); }));
        }
        return forkJoinInternal(sources, null);
    }
    function forkJoinInternal(sources, keys) {
        return new Observable(function (subscriber) {
            var len = sources.length;
            if (len === 0) {
                subscriber.complete();
                return;
            }
            var values = new Array(len);
            var completed = 0;
            var emitted = 0;
            var _loop_1 = function (i) {
                var source = from(sources[i]);
                var hasValue = false;
                subscriber.add(source.subscribe({
                    next: function (value) {
                        if (!hasValue) {
                            hasValue = true;
                            emitted++;
                        }
                        values[i] = value;
                    },
                    error: function (err) { return subscriber.error(err); },
                    complete: function () {
                        completed++;
                        if (completed === len || !hasValue) {
                            if (emitted === len) {
                                subscriber.next(keys ?
                                    keys.reduce(function (result, key, i) { return (result[key] = values[i], result); }, {}) :
                                    values);
                            }
                            subscriber.complete();
                        }
                    }
                }));
            };
            for (var i = 0; i < len; i++) {
                _loop_1(i);
            }
        });
    }

    function fromEvent(target, eventName, options, resultSelector) {
        if (isFunction(options)) {
            resultSelector = options;
            options = undefined;
        }
        if (resultSelector) {
            return fromEvent(target, eventName, options).pipe(map(function (args) { return isArray(args) ? resultSelector.apply(void 0, args) : resultSelector(args); }));
        }
        return new Observable(function (subscriber) {
            function handler(e) {
                if (arguments.length > 1) {
                    subscriber.next(Array.prototype.slice.call(arguments));
                }
                else {
                    subscriber.next(e);
                }
            }
            setupSubscription(target, eventName, handler, subscriber, options);
        });
    }
    function setupSubscription(sourceObj, eventName, handler, subscriber, options) {
        var unsubscribe;
        if (isEventTarget(sourceObj)) {
            var source_1 = sourceObj;
            sourceObj.addEventListener(eventName, handler, options);
            unsubscribe = function () { return source_1.removeEventListener(eventName, handler, options); };
        }
        else if (isJQueryStyleEventEmitter(sourceObj)) {
            var source_2 = sourceObj;
            sourceObj.on(eventName, handler);
            unsubscribe = function () { return source_2.off(eventName, handler); };
        }
        else if (isNodeStyleEventEmitter(sourceObj)) {
            var source_3 = sourceObj;
            sourceObj.addListener(eventName, handler);
            unsubscribe = function () { return source_3.removeListener(eventName, handler); };
        }
        else if (sourceObj && sourceObj.length) {
            for (var i = 0, len = sourceObj.length; i < len; i++) {
                setupSubscription(sourceObj[i], eventName, handler, subscriber, options);
            }
        }
        else {
            throw new TypeError('Invalid event target');
        }
        subscriber.add(unsubscribe);
    }
    function isNodeStyleEventEmitter(sourceObj) {
        return sourceObj && typeof sourceObj.addListener === 'function' && typeof sourceObj.removeListener === 'function';
    }
    function isJQueryStyleEventEmitter(sourceObj) {
        return sourceObj && typeof sourceObj.on === 'function' && typeof sourceObj.off === 'function';
    }
    function isEventTarget(sourceObj) {
        return sourceObj && typeof sourceObj.addEventListener === 'function' && typeof sourceObj.removeEventListener === 'function';
    }

    function fromEventPattern(addHandler, removeHandler, resultSelector) {
        if (resultSelector) {
            return fromEventPattern(addHandler, removeHandler).pipe(map(function (args) { return isArray(args) ? resultSelector.apply(void 0, args) : resultSelector(args); }));
        }
        return new Observable(function (subscriber) {
            var handler = function () {
                var e = [];
                for (var _i = 0; _i < arguments.length; _i++) {
                    e[_i] = arguments[_i];
                }
                return subscriber.next(e.length === 1 ? e[0] : e);
            };
            var retValue;
            try {
                retValue = addHandler(handler);
            }
            catch (err) {
                subscriber.error(err);
                return undefined;
            }
            if (!isFunction(removeHandler)) {
                return undefined;
            }
            return function () { return removeHandler(handler, retValue); };
        });
    }

    function generate(initialStateOrOptions, condition, iterate, resultSelectorOrObservable, scheduler) {
        var resultSelector;
        var initialState;
        if (arguments.length == 1) {
            var options = initialStateOrOptions;
            initialState = options.initialState;
            condition = options.condition;
            iterate = options.iterate;
            resultSelector = options.resultSelector || identity;
            scheduler = options.scheduler;
        }
        else if (resultSelectorOrObservable === undefined || isScheduler(resultSelectorOrObservable)) {
            initialState = initialStateOrOptions;
            resultSelector = identity;
            scheduler = resultSelectorOrObservable;
        }
        else {
            initialState = initialStateOrOptions;
            resultSelector = resultSelectorOrObservable;
        }
        return new Observable(function (subscriber) {
            var state = initialState;
            if (scheduler) {
                return scheduler.schedule(dispatch$3, 0, {
                    subscriber: subscriber,
                    iterate: iterate,
                    condition: condition,
                    resultSelector: resultSelector,
                    state: state
                });
            }
            do {
                if (condition) {
                    var conditionResult = void 0;
                    try {
                        conditionResult = condition(state);
                    }
                    catch (err) {
                        subscriber.error(err);
                        return undefined;
                    }
                    if (!conditionResult) {
                        subscriber.complete();
                        break;
                    }
                }
                var value = void 0;
                try {
                    value = resultSelector(state);
                }
                catch (err) {
                    subscriber.error(err);
                    return undefined;
                }
                subscriber.next(value);
                if (subscriber.closed) {
                    break;
                }
                try {
                    state = iterate(state);
                }
                catch (err) {
                    subscriber.error(err);
                    return undefined;
                }
            } while (true);
            return undefined;
        });
    }
    function dispatch$3(state) {
        var subscriber = state.subscriber, condition = state.condition;
        if (subscriber.closed) {
            return undefined;
        }
        if (state.needIterate) {
            try {
                state.state = state.iterate(state.state);
            }
            catch (err) {
                subscriber.error(err);
                return undefined;
            }
        }
        else {
            state.needIterate = true;
        }
        if (condition) {
            var conditionResult = void 0;
            try {
                conditionResult = condition(state.state);
            }
            catch (err) {
                subscriber.error(err);
                return undefined;
            }
            if (!conditionResult) {
                subscriber.complete();
                return undefined;
            }
            if (subscriber.closed) {
                return undefined;
            }
        }
        var value;
        try {
            value = state.resultSelector(state.state);
        }
        catch (err) {
            subscriber.error(err);
            return undefined;
        }
        if (subscriber.closed) {
            return undefined;
        }
        subscriber.next(value);
        if (subscriber.closed) {
            return undefined;
        }
        return this.schedule(state);
    }

    function iif(condition, trueResult, falseResult) {
        if (trueResult === void 0) { trueResult = EMPTY; }
        if (falseResult === void 0) { falseResult = EMPTY; }
        return defer(function () { return condition() ? trueResult : falseResult; });
    }

    function isNumeric(val) {
        return !isArray(val) && (val - parseFloat(val) + 1) >= 0;
    }

    function interval(period, scheduler) {
        if (period === void 0) { period = 0; }
        if (scheduler === void 0) { scheduler = async; }
        if (!isNumeric(period) || period < 0) {
            period = 0;
        }
        if (!scheduler || typeof scheduler.schedule !== 'function') {
            scheduler = async;
        }
        return new Observable(function (subscriber) {
            subscriber.add(scheduler.schedule(dispatch$4, period, { subscriber: subscriber, counter: 0, period: period }));
            return subscriber;
        });
    }
    function dispatch$4(state) {
        var subscriber = state.subscriber, counter = state.counter, period = state.period;
        subscriber.next(counter);
        this.schedule({ subscriber: subscriber, counter: counter + 1, period: period }, period);
    }

    function merge() {
        var observables = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            observables[_i] = arguments[_i];
        }
        var concurrent = Number.POSITIVE_INFINITY;
        var scheduler = null;
        var last = observables[observables.length - 1];
        if (isScheduler(last)) {
            scheduler = observables.pop();
            if (observables.length > 1 && typeof observables[observables.length - 1] === 'number') {
                concurrent = observables.pop();
            }
        }
        else if (typeof last === 'number') {
            concurrent = observables.pop();
        }
        if (scheduler === null && observables.length === 1 && observables[0] instanceof Observable) {
            return observables[0];
        }
        return mergeAll(concurrent)(fromArray(observables, scheduler));
    }

    var NEVER = new Observable(noop);
    function never() {
        return NEVER;
    }

    function onErrorResumeNext() {
        var sources = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            sources[_i] = arguments[_i];
        }
        if (sources.length === 0) {
            return EMPTY;
        }
        var first = sources[0], remainder = sources.slice(1);
        if (sources.length === 1 && isArray(first)) {
            return onErrorResumeNext.apply(void 0, first);
        }
        return new Observable(function (subscriber) {
            var subNext = function () { return subscriber.add(onErrorResumeNext.apply(void 0, remainder).subscribe(subscriber)); };
            return from(first).subscribe({
                next: function (value) { subscriber.next(value); },
                error: subNext,
                complete: subNext,
            });
        });
    }

    function pairs(obj, scheduler) {
        if (!scheduler) {
            return new Observable(function (subscriber) {
                var keys = Object.keys(obj);
                for (var i = 0; i < keys.length && !subscriber.closed; i++) {
                    var key = keys[i];
                    if (obj.hasOwnProperty(key)) {
                        subscriber.next([key, obj[key]]);
                    }
                }
                subscriber.complete();
            });
        }
        else {
            return new Observable(function (subscriber) {
                var keys = Object.keys(obj);
                var subscription = new Subscription();
                subscription.add(scheduler.schedule(dispatch$5, 0, { keys: keys, index: 0, subscriber: subscriber, subscription: subscription, obj: obj }));
                return subscription;
            });
        }
    }
    function dispatch$5(state) {
        var keys = state.keys, index = state.index, subscriber = state.subscriber, subscription = state.subscription, obj = state.obj;
        if (!subscriber.closed) {
            if (index < keys.length) {
                var key = keys[index];
                subscriber.next([key, obj[key]]);
                subscription.add(this.schedule({ keys: keys, index: index + 1, subscriber: subscriber, subscription: subscription, obj: obj }));
            }
            else {
                subscriber.complete();
            }
        }
    }

    function not(pred, thisArg) {
        function notPred() {
            return !(notPred.pred.apply(notPred.thisArg, arguments));
        }
        notPred.pred = pred;
        notPred.thisArg = thisArg;
        return notPred;
    }

    function filter(predicate, thisArg) {
        return function filterOperatorFunction(source) {
            return source.lift(new FilterOperator(predicate, thisArg));
        };
    }
    var FilterOperator = (function () {
        function FilterOperator(predicate, thisArg) {
            this.predicate = predicate;
            this.thisArg = thisArg;
        }
        FilterOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new FilterSubscriber(subscriber, this.predicate, this.thisArg));
        };
        return FilterOperator;
    }());
    var FilterSubscriber = (function (_super) {
        __extends(FilterSubscriber, _super);
        function FilterSubscriber(destination, predicate, thisArg) {
            var _this = _super.call(this, destination) || this;
            _this.predicate = predicate;
            _this.thisArg = thisArg;
            _this.count = 0;
            return _this;
        }
        FilterSubscriber.prototype._next = function (value) {
            var result;
            try {
                result = this.predicate.call(this.thisArg, value, this.count++);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            if (result) {
                this.destination.next(value);
            }
        };
        return FilterSubscriber;
    }(Subscriber));

    function partition(source, predicate, thisArg) {
        return [
            filter(predicate, thisArg)(new Observable(subscribeTo(source))),
            filter(not(predicate, thisArg))(new Observable(subscribeTo(source)))
        ];
    }

    function race() {
        var observables = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            observables[_i] = arguments[_i];
        }
        if (observables.length === 1) {
            if (isArray(observables[0])) {
                observables = observables[0];
            }
            else {
                return observables[0];
            }
        }
        return fromArray(observables, undefined).lift(new RaceOperator());
    }
    var RaceOperator = (function () {
        function RaceOperator() {
        }
        RaceOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new RaceSubscriber(subscriber));
        };
        return RaceOperator;
    }());
    var RaceSubscriber = (function (_super) {
        __extends(RaceSubscriber, _super);
        function RaceSubscriber(destination) {
            var _this = _super.call(this, destination) || this;
            _this.hasFirst = false;
            _this.observables = [];
            _this.subscriptions = [];
            return _this;
        }
        RaceSubscriber.prototype._next = function (observable) {
            this.observables.push(observable);
        };
        RaceSubscriber.prototype._complete = function () {
            var observables = this.observables;
            var len = observables.length;
            if (len === 0) {
                this.destination.complete();
            }
            else {
                for (var i = 0; i < len && !this.hasFirst; i++) {
                    var observable = observables[i];
                    var subscription = subscribeToResult(this, observable, undefined, i);
                    if (this.subscriptions) {
                        this.subscriptions.push(subscription);
                    }
                    this.add(subscription);
                }
                this.observables = null;
            }
        };
        RaceSubscriber.prototype.notifyNext = function (_outerValue, innerValue, outerIndex) {
            if (!this.hasFirst) {
                this.hasFirst = true;
                for (var i = 0; i < this.subscriptions.length; i++) {
                    if (i !== outerIndex) {
                        var subscription = this.subscriptions[i];
                        subscription.unsubscribe();
                        this.remove(subscription);
                    }
                }
                this.subscriptions = null;
            }
            this.destination.next(innerValue);
        };
        return RaceSubscriber;
    }(OuterSubscriber));

    function range(start, count, scheduler) {
        if (start === void 0) { start = 0; }
        return new Observable(function (subscriber) {
            if (count === undefined) {
                count = start;
                start = 0;
            }
            var index = 0;
            var current = start;
            if (scheduler) {
                return scheduler.schedule(dispatch$6, 0, {
                    index: index, count: count, start: start, subscriber: subscriber
                });
            }
            else {
                do {
                    if (index++ >= count) {
                        subscriber.complete();
                        break;
                    }
                    subscriber.next(current++);
                    if (subscriber.closed) {
                        break;
                    }
                } while (true);
            }
            return undefined;
        });
    }
    function dispatch$6(state) {
        var start = state.start, index = state.index, count = state.count, subscriber = state.subscriber;
        if (index >= count) {
            subscriber.complete();
            return;
        }
        subscriber.next(start);
        if (subscriber.closed) {
            return;
        }
        state.index = index + 1;
        state.start = start + 1;
        this.schedule(state);
    }

    function timer(dueTime, periodOrScheduler, scheduler) {
        if (dueTime === void 0) { dueTime = 0; }
        var period = -1;
        if (isNumeric(periodOrScheduler)) {
            period = Number(periodOrScheduler) < 1 && 1 || Number(periodOrScheduler);
        }
        else if (isScheduler(periodOrScheduler)) {
            scheduler = periodOrScheduler;
        }
        if (!isScheduler(scheduler)) {
            scheduler = async;
        }
        return new Observable(function (subscriber) {
            var due = isNumeric(dueTime)
                ? dueTime
                : (+dueTime - scheduler.now());
            return scheduler.schedule(dispatch$7, due, {
                index: 0, period: period, subscriber: subscriber
            });
        });
    }
    function dispatch$7(state) {
        var index = state.index, period = state.period, subscriber = state.subscriber;
        subscriber.next(index);
        if (subscriber.closed) {
            return;
        }
        else if (period === -1) {
            return subscriber.complete();
        }
        state.index = index + 1;
        this.schedule(state, period);
    }

    function using(resourceFactory, observableFactory) {
        return new Observable(function (subscriber) {
            var resource;
            try {
                resource = resourceFactory();
            }
            catch (err) {
                subscriber.error(err);
                return undefined;
            }
            var result;
            try {
                result = observableFactory(resource);
            }
            catch (err) {
                subscriber.error(err);
                return undefined;
            }
            var source = result ? from(result) : EMPTY;
            var subscription = source.subscribe(subscriber);
            return function () {
                subscription.unsubscribe();
                if (resource) {
                    resource.unsubscribe();
                }
            };
        });
    }

    function zip() {
        var observables = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            observables[_i] = arguments[_i];
        }
        var resultSelector = observables[observables.length - 1];
        if (typeof resultSelector === 'function') {
            observables.pop();
        }
        return fromArray(observables, undefined).lift(new ZipOperator(resultSelector));
    }
    var ZipOperator = (function () {
        function ZipOperator(resultSelector) {
            this.resultSelector = resultSelector;
        }
        ZipOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new ZipSubscriber(subscriber, this.resultSelector));
        };
        return ZipOperator;
    }());
    var ZipSubscriber = (function (_super) {
        __extends(ZipSubscriber, _super);
        function ZipSubscriber(destination, resultSelector, values) {
            if (values === void 0) { values = Object.create(null); }
            var _this = _super.call(this, destination) || this;
            _this.resultSelector = resultSelector;
            _this.iterators = [];
            _this.active = 0;
            _this.resultSelector = (typeof resultSelector === 'function') ? resultSelector : undefined;
            return _this;
        }
        ZipSubscriber.prototype._next = function (value) {
            var iterators = this.iterators;
            if (isArray(value)) {
                iterators.push(new StaticArrayIterator(value));
            }
            else if (typeof value[iterator] === 'function') {
                iterators.push(new StaticIterator(value[iterator]()));
            }
            else {
                iterators.push(new ZipBufferIterator(this.destination, this, value));
            }
        };
        ZipSubscriber.prototype._complete = function () {
            var iterators = this.iterators;
            var len = iterators.length;
            this.unsubscribe();
            if (len === 0) {
                this.destination.complete();
                return;
            }
            this.active = len;
            for (var i = 0; i < len; i++) {
                var iterator$$1 = iterators[i];
                if (iterator$$1.stillUnsubscribed) {
                    var destination = this.destination;
                    destination.add(iterator$$1.subscribe());
                }
                else {
                    this.active--;
                }
            }
        };
        ZipSubscriber.prototype.notifyInactive = function () {
            this.active--;
            if (this.active === 0) {
                this.destination.complete();
            }
        };
        ZipSubscriber.prototype.checkIterators = function () {
            var iterators = this.iterators;
            var len = iterators.length;
            var destination = this.destination;
            for (var i = 0; i < len; i++) {
                var iterator$$1 = iterators[i];
                if (typeof iterator$$1.hasValue === 'function' && !iterator$$1.hasValue()) {
                    return;
                }
            }
            var shouldComplete = false;
            var args = [];
            for (var i = 0; i < len; i++) {
                var iterator$$1 = iterators[i];
                var result = iterator$$1.next();
                if (iterator$$1.hasCompleted()) {
                    shouldComplete = true;
                }
                if (result.done) {
                    destination.complete();
                    return;
                }
                args.push(result.value);
            }
            if (this.resultSelector) {
                this._tryresultSelector(args);
            }
            else {
                destination.next(args);
            }
            if (shouldComplete) {
                destination.complete();
            }
        };
        ZipSubscriber.prototype._tryresultSelector = function (args) {
            var result;
            try {
                result = this.resultSelector.apply(this, args);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            this.destination.next(result);
        };
        return ZipSubscriber;
    }(Subscriber));
    var StaticIterator = (function () {
        function StaticIterator(iterator$$1) {
            this.iterator = iterator$$1;
            this.nextResult = iterator$$1.next();
        }
        StaticIterator.prototype.hasValue = function () {
            return true;
        };
        StaticIterator.prototype.next = function () {
            var result = this.nextResult;
            this.nextResult = this.iterator.next();
            return result;
        };
        StaticIterator.prototype.hasCompleted = function () {
            var nextResult = this.nextResult;
            return Boolean(nextResult && nextResult.done);
        };
        return StaticIterator;
    }());
    var StaticArrayIterator = (function () {
        function StaticArrayIterator(array) {
            this.array = array;
            this.index = 0;
            this.length = 0;
            this.length = array.length;
        }
        StaticArrayIterator.prototype[iterator] = function () {
            return this;
        };
        StaticArrayIterator.prototype.next = function (value) {
            var i = this.index++;
            var array = this.array;
            return i < this.length ? { value: array[i], done: false } : { value: null, done: true };
        };
        StaticArrayIterator.prototype.hasValue = function () {
            return this.array.length > this.index;
        };
        StaticArrayIterator.prototype.hasCompleted = function () {
            return this.array.length === this.index;
        };
        return StaticArrayIterator;
    }());
    var ZipBufferIterator = (function (_super) {
        __extends(ZipBufferIterator, _super);
        function ZipBufferIterator(destination, parent, observable) {
            var _this = _super.call(this, destination) || this;
            _this.parent = parent;
            _this.observable = observable;
            _this.stillUnsubscribed = true;
            _this.buffer = [];
            _this.isComplete = false;
            return _this;
        }
        ZipBufferIterator.prototype[iterator] = function () {
            return this;
        };
        ZipBufferIterator.prototype.next = function () {
            var buffer = this.buffer;
            if (buffer.length === 0 && this.isComplete) {
                return { value: null, done: true };
            }
            else {
                return { value: buffer.shift(), done: false };
            }
        };
        ZipBufferIterator.prototype.hasValue = function () {
            return this.buffer.length > 0;
        };
        ZipBufferIterator.prototype.hasCompleted = function () {
            return this.buffer.length === 0 && this.isComplete;
        };
        ZipBufferIterator.prototype.notifyComplete = function () {
            if (this.buffer.length > 0) {
                this.isComplete = true;
                this.parent.notifyInactive();
            }
            else {
                this.destination.complete();
            }
        };
        ZipBufferIterator.prototype.notifyNext = function (innerValue) {
            this.buffer.push(innerValue);
            this.parent.checkIterators();
        };
        ZipBufferIterator.prototype.subscribe = function () {
            return innerSubscribe(this.observable, new SimpleInnerSubscriber(this));
        };
        return ZipBufferIterator;
    }(SimpleOuterSubscriber));

    function audit(durationSelector) {
        return function auditOperatorFunction(source) {
            return source.lift(new AuditOperator(durationSelector));
        };
    }
    var AuditOperator = (function () {
        function AuditOperator(durationSelector) {
            this.durationSelector = durationSelector;
        }
        AuditOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new AuditSubscriber(subscriber, this.durationSelector));
        };
        return AuditOperator;
    }());
    var AuditSubscriber = (function (_super) {
        __extends(AuditSubscriber, _super);
        function AuditSubscriber(destination, durationSelector) {
            var _this = _super.call(this, destination) || this;
            _this.durationSelector = durationSelector;
            _this.hasValue = false;
            return _this;
        }
        AuditSubscriber.prototype._next = function (value) {
            this.value = value;
            this.hasValue = true;
            if (!this.throttled) {
                var duration = void 0;
                try {
                    var durationSelector = this.durationSelector;
                    duration = durationSelector(value);
                }
                catch (err) {
                    return this.destination.error(err);
                }
                var innerSubscription = innerSubscribe(duration, new SimpleInnerSubscriber(this));
                if (!innerSubscription || innerSubscription.closed) {
                    this.clearThrottle();
                }
                else {
                    this.add(this.throttled = innerSubscription);
                }
            }
        };
        AuditSubscriber.prototype.clearThrottle = function () {
            var _a = this, value = _a.value, hasValue = _a.hasValue, throttled = _a.throttled;
            if (throttled) {
                this.remove(throttled);
                this.throttled = undefined;
                throttled.unsubscribe();
            }
            if (hasValue) {
                this.value = undefined;
                this.hasValue = false;
                this.destination.next(value);
            }
        };
        AuditSubscriber.prototype.notifyNext = function () {
            this.clearThrottle();
        };
        AuditSubscriber.prototype.notifyComplete = function () {
            this.clearThrottle();
        };
        return AuditSubscriber;
    }(SimpleOuterSubscriber));

    function auditTime(duration, scheduler) {
        if (scheduler === void 0) { scheduler = async; }
        return audit(function () { return timer(duration, scheduler); });
    }

    function buffer(closingNotifier) {
        return function bufferOperatorFunction(source) {
            return source.lift(new BufferOperator(closingNotifier));
        };
    }
    var BufferOperator = (function () {
        function BufferOperator(closingNotifier) {
            this.closingNotifier = closingNotifier;
        }
        BufferOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new BufferSubscriber(subscriber, this.closingNotifier));
        };
        return BufferOperator;
    }());
    var BufferSubscriber = (function (_super) {
        __extends(BufferSubscriber, _super);
        function BufferSubscriber(destination, closingNotifier) {
            var _this = _super.call(this, destination) || this;
            _this.buffer = [];
            _this.add(innerSubscribe(closingNotifier, new SimpleInnerSubscriber(_this)));
            return _this;
        }
        BufferSubscriber.prototype._next = function (value) {
            this.buffer.push(value);
        };
        BufferSubscriber.prototype.notifyNext = function () {
            var buffer = this.buffer;
            this.buffer = [];
            this.destination.next(buffer);
        };
        return BufferSubscriber;
    }(SimpleOuterSubscriber));

    function bufferCount(bufferSize, startBufferEvery) {
        if (startBufferEvery === void 0) { startBufferEvery = null; }
        return function bufferCountOperatorFunction(source) {
            return source.lift(new BufferCountOperator(bufferSize, startBufferEvery));
        };
    }
    var BufferCountOperator = (function () {
        function BufferCountOperator(bufferSize, startBufferEvery) {
            this.bufferSize = bufferSize;
            this.startBufferEvery = startBufferEvery;
            if (!startBufferEvery || bufferSize === startBufferEvery) {
                this.subscriberClass = BufferCountSubscriber;
            }
            else {
                this.subscriberClass = BufferSkipCountSubscriber;
            }
        }
        BufferCountOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new this.subscriberClass(subscriber, this.bufferSize, this.startBufferEvery));
        };
        return BufferCountOperator;
    }());
    var BufferCountSubscriber = (function (_super) {
        __extends(BufferCountSubscriber, _super);
        function BufferCountSubscriber(destination, bufferSize) {
            var _this = _super.call(this, destination) || this;
            _this.bufferSize = bufferSize;
            _this.buffer = [];
            return _this;
        }
        BufferCountSubscriber.prototype._next = function (value) {
            var buffer = this.buffer;
            buffer.push(value);
            if (buffer.length == this.bufferSize) {
                this.destination.next(buffer);
                this.buffer = [];
            }
        };
        BufferCountSubscriber.prototype._complete = function () {
            var buffer = this.buffer;
            if (buffer.length > 0) {
                this.destination.next(buffer);
            }
            _super.prototype._complete.call(this);
        };
        return BufferCountSubscriber;
    }(Subscriber));
    var BufferSkipCountSubscriber = (function (_super) {
        __extends(BufferSkipCountSubscriber, _super);
        function BufferSkipCountSubscriber(destination, bufferSize, startBufferEvery) {
            var _this = _super.call(this, destination) || this;
            _this.bufferSize = bufferSize;
            _this.startBufferEvery = startBufferEvery;
            _this.buffers = [];
            _this.count = 0;
            return _this;
        }
        BufferSkipCountSubscriber.prototype._next = function (value) {
            var _a = this, bufferSize = _a.bufferSize, startBufferEvery = _a.startBufferEvery, buffers = _a.buffers, count = _a.count;
            this.count++;
            if (count % startBufferEvery === 0) {
                buffers.push([]);
            }
            for (var i = buffers.length; i--;) {
                var buffer = buffers[i];
                buffer.push(value);
                if (buffer.length === bufferSize) {
                    buffers.splice(i, 1);
                    this.destination.next(buffer);
                }
            }
        };
        BufferSkipCountSubscriber.prototype._complete = function () {
            var _a = this, buffers = _a.buffers, destination = _a.destination;
            while (buffers.length > 0) {
                var buffer = buffers.shift();
                if (buffer.length > 0) {
                    destination.next(buffer);
                }
            }
            _super.prototype._complete.call(this);
        };
        return BufferSkipCountSubscriber;
    }(Subscriber));

    function bufferTime(bufferTimeSpan) {
        var length = arguments.length;
        var scheduler = async;
        if (isScheduler(arguments[arguments.length - 1])) {
            scheduler = arguments[arguments.length - 1];
            length--;
        }
        var bufferCreationInterval = null;
        if (length >= 2) {
            bufferCreationInterval = arguments[1];
        }
        var maxBufferSize = Number.POSITIVE_INFINITY;
        if (length >= 3) {
            maxBufferSize = arguments[2];
        }
        return function bufferTimeOperatorFunction(source) {
            return source.lift(new BufferTimeOperator(bufferTimeSpan, bufferCreationInterval, maxBufferSize, scheduler));
        };
    }
    var BufferTimeOperator = (function () {
        function BufferTimeOperator(bufferTimeSpan, bufferCreationInterval, maxBufferSize, scheduler) {
            this.bufferTimeSpan = bufferTimeSpan;
            this.bufferCreationInterval = bufferCreationInterval;
            this.maxBufferSize = maxBufferSize;
            this.scheduler = scheduler;
        }
        BufferTimeOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new BufferTimeSubscriber(subscriber, this.bufferTimeSpan, this.bufferCreationInterval, this.maxBufferSize, this.scheduler));
        };
        return BufferTimeOperator;
    }());
    var Context = (function () {
        function Context() {
            this.buffer = [];
        }
        return Context;
    }());
    var BufferTimeSubscriber = (function (_super) {
        __extends(BufferTimeSubscriber, _super);
        function BufferTimeSubscriber(destination, bufferTimeSpan, bufferCreationInterval, maxBufferSize, scheduler) {
            var _this = _super.call(this, destination) || this;
            _this.bufferTimeSpan = bufferTimeSpan;
            _this.bufferCreationInterval = bufferCreationInterval;
            _this.maxBufferSize = maxBufferSize;
            _this.scheduler = scheduler;
            _this.contexts = [];
            var context = _this.openContext();
            _this.timespanOnly = bufferCreationInterval == null || bufferCreationInterval < 0;
            if (_this.timespanOnly) {
                var timeSpanOnlyState = { subscriber: _this, context: context, bufferTimeSpan: bufferTimeSpan };
                _this.add(context.closeAction = scheduler.schedule(dispatchBufferTimeSpanOnly, bufferTimeSpan, timeSpanOnlyState));
            }
            else {
                var closeState = { subscriber: _this, context: context };
                var creationState = { bufferTimeSpan: bufferTimeSpan, bufferCreationInterval: bufferCreationInterval, subscriber: _this, scheduler: scheduler };
                _this.add(context.closeAction = scheduler.schedule(dispatchBufferClose, bufferTimeSpan, closeState));
                _this.add(scheduler.schedule(dispatchBufferCreation, bufferCreationInterval, creationState));
            }
            return _this;
        }
        BufferTimeSubscriber.prototype._next = function (value) {
            var contexts = this.contexts;
            var len = contexts.length;
            var filledBufferContext;
            for (var i = 0; i < len; i++) {
                var context_1 = contexts[i];
                var buffer = context_1.buffer;
                buffer.push(value);
                if (buffer.length == this.maxBufferSize) {
                    filledBufferContext = context_1;
                }
            }
            if (filledBufferContext) {
                this.onBufferFull(filledBufferContext);
            }
        };
        BufferTimeSubscriber.prototype._error = function (err) {
            this.contexts.length = 0;
            _super.prototype._error.call(this, err);
        };
        BufferTimeSubscriber.prototype._complete = function () {
            var _a = this, contexts = _a.contexts, destination = _a.destination;
            while (contexts.length > 0) {
                var context_2 = contexts.shift();
                destination.next(context_2.buffer);
            }
            _super.prototype._complete.call(this);
        };
        BufferTimeSubscriber.prototype._unsubscribe = function () {
            this.contexts = null;
        };
        BufferTimeSubscriber.prototype.onBufferFull = function (context) {
            this.closeContext(context);
            var closeAction = context.closeAction;
            closeAction.unsubscribe();
            this.remove(closeAction);
            if (!this.closed && this.timespanOnly) {
                context = this.openContext();
                var bufferTimeSpan = this.bufferTimeSpan;
                var timeSpanOnlyState = { subscriber: this, context: context, bufferTimeSpan: bufferTimeSpan };
                this.add(context.closeAction = this.scheduler.schedule(dispatchBufferTimeSpanOnly, bufferTimeSpan, timeSpanOnlyState));
            }
        };
        BufferTimeSubscriber.prototype.openContext = function () {
            var context = new Context();
            this.contexts.push(context);
            return context;
        };
        BufferTimeSubscriber.prototype.closeContext = function (context) {
            this.destination.next(context.buffer);
            var contexts = this.contexts;
            var spliceIndex = contexts ? contexts.indexOf(context) : -1;
            if (spliceIndex >= 0) {
                contexts.splice(contexts.indexOf(context), 1);
            }
        };
        return BufferTimeSubscriber;
    }(Subscriber));
    function dispatchBufferTimeSpanOnly(state) {
        var subscriber = state.subscriber;
        var prevContext = state.context;
        if (prevContext) {
            subscriber.closeContext(prevContext);
        }
        if (!subscriber.closed) {
            state.context = subscriber.openContext();
            state.context.closeAction = this.schedule(state, state.bufferTimeSpan);
        }
    }
    function dispatchBufferCreation(state) {
        var bufferCreationInterval = state.bufferCreationInterval, bufferTimeSpan = state.bufferTimeSpan, subscriber = state.subscriber, scheduler = state.scheduler;
        var context = subscriber.openContext();
        var action = this;
        if (!subscriber.closed) {
            subscriber.add(context.closeAction = scheduler.schedule(dispatchBufferClose, bufferTimeSpan, { subscriber: subscriber, context: context }));
            action.schedule(state, bufferCreationInterval);
        }
    }
    function dispatchBufferClose(arg) {
        var subscriber = arg.subscriber, context = arg.context;
        subscriber.closeContext(context);
    }

    function bufferToggle(openings, closingSelector) {
        return function bufferToggleOperatorFunction(source) {
            return source.lift(new BufferToggleOperator(openings, closingSelector));
        };
    }
    var BufferToggleOperator = (function () {
        function BufferToggleOperator(openings, closingSelector) {
            this.openings = openings;
            this.closingSelector = closingSelector;
        }
        BufferToggleOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new BufferToggleSubscriber(subscriber, this.openings, this.closingSelector));
        };
        return BufferToggleOperator;
    }());
    var BufferToggleSubscriber = (function (_super) {
        __extends(BufferToggleSubscriber, _super);
        function BufferToggleSubscriber(destination, openings, closingSelector) {
            var _this = _super.call(this, destination) || this;
            _this.closingSelector = closingSelector;
            _this.contexts = [];
            _this.add(subscribeToResult(_this, openings));
            return _this;
        }
        BufferToggleSubscriber.prototype._next = function (value) {
            var contexts = this.contexts;
            var len = contexts.length;
            for (var i = 0; i < len; i++) {
                contexts[i].buffer.push(value);
            }
        };
        BufferToggleSubscriber.prototype._error = function (err) {
            var contexts = this.contexts;
            while (contexts.length > 0) {
                var context_1 = contexts.shift();
                context_1.subscription.unsubscribe();
                context_1.buffer = null;
                context_1.subscription = null;
            }
            this.contexts = null;
            _super.prototype._error.call(this, err);
        };
        BufferToggleSubscriber.prototype._complete = function () {
            var contexts = this.contexts;
            while (contexts.length > 0) {
                var context_2 = contexts.shift();
                this.destination.next(context_2.buffer);
                context_2.subscription.unsubscribe();
                context_2.buffer = null;
                context_2.subscription = null;
            }
            this.contexts = null;
            _super.prototype._complete.call(this);
        };
        BufferToggleSubscriber.prototype.notifyNext = function (outerValue, innerValue) {
            outerValue ? this.closeBuffer(outerValue) : this.openBuffer(innerValue);
        };
        BufferToggleSubscriber.prototype.notifyComplete = function (innerSub) {
            this.closeBuffer(innerSub.context);
        };
        BufferToggleSubscriber.prototype.openBuffer = function (value) {
            try {
                var closingSelector = this.closingSelector;
                var closingNotifier = closingSelector.call(this, value);
                if (closingNotifier) {
                    this.trySubscribe(closingNotifier);
                }
            }
            catch (err) {
                this._error(err);
            }
        };
        BufferToggleSubscriber.prototype.closeBuffer = function (context) {
            var contexts = this.contexts;
            if (contexts && context) {
                var buffer = context.buffer, subscription = context.subscription;
                this.destination.next(buffer);
                contexts.splice(contexts.indexOf(context), 1);
                this.remove(subscription);
                subscription.unsubscribe();
            }
        };
        BufferToggleSubscriber.prototype.trySubscribe = function (closingNotifier) {
            var contexts = this.contexts;
            var buffer = [];
            var subscription = new Subscription();
            var context = { buffer: buffer, subscription: subscription };
            contexts.push(context);
            var innerSubscription = subscribeToResult(this, closingNotifier, context);
            if (!innerSubscription || innerSubscription.closed) {
                this.closeBuffer(context);
            }
            else {
                innerSubscription.context = context;
                this.add(innerSubscription);
                subscription.add(innerSubscription);
            }
        };
        return BufferToggleSubscriber;
    }(OuterSubscriber));

    function bufferWhen(closingSelector) {
        return function (source) {
            return source.lift(new BufferWhenOperator(closingSelector));
        };
    }
    var BufferWhenOperator = (function () {
        function BufferWhenOperator(closingSelector) {
            this.closingSelector = closingSelector;
        }
        BufferWhenOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new BufferWhenSubscriber(subscriber, this.closingSelector));
        };
        return BufferWhenOperator;
    }());
    var BufferWhenSubscriber = (function (_super) {
        __extends(BufferWhenSubscriber, _super);
        function BufferWhenSubscriber(destination, closingSelector) {
            var _this = _super.call(this, destination) || this;
            _this.closingSelector = closingSelector;
            _this.subscribing = false;
            _this.openBuffer();
            return _this;
        }
        BufferWhenSubscriber.prototype._next = function (value) {
            this.buffer.push(value);
        };
        BufferWhenSubscriber.prototype._complete = function () {
            var buffer = this.buffer;
            if (buffer) {
                this.destination.next(buffer);
            }
            _super.prototype._complete.call(this);
        };
        BufferWhenSubscriber.prototype._unsubscribe = function () {
            this.buffer = undefined;
            this.subscribing = false;
        };
        BufferWhenSubscriber.prototype.notifyNext = function () {
            this.openBuffer();
        };
        BufferWhenSubscriber.prototype.notifyComplete = function () {
            if (this.subscribing) {
                this.complete();
            }
            else {
                this.openBuffer();
            }
        };
        BufferWhenSubscriber.prototype.openBuffer = function () {
            var closingSubscription = this.closingSubscription;
            if (closingSubscription) {
                this.remove(closingSubscription);
                closingSubscription.unsubscribe();
            }
            var buffer = this.buffer;
            if (this.buffer) {
                this.destination.next(buffer);
            }
            this.buffer = [];
            var closingNotifier;
            try {
                var closingSelector = this.closingSelector;
                closingNotifier = closingSelector();
            }
            catch (err) {
                return this.error(err);
            }
            closingSubscription = new Subscription();
            this.closingSubscription = closingSubscription;
            this.add(closingSubscription);
            this.subscribing = true;
            closingSubscription.add(innerSubscribe(closingNotifier, new SimpleInnerSubscriber(this)));
            this.subscribing = false;
        };
        return BufferWhenSubscriber;
    }(SimpleOuterSubscriber));

    function catchError(selector) {
        return function catchErrorOperatorFunction(source) {
            var operator = new CatchOperator(selector);
            var caught = source.lift(operator);
            return (operator.caught = caught);
        };
    }
    var CatchOperator = (function () {
        function CatchOperator(selector) {
            this.selector = selector;
        }
        CatchOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new CatchSubscriber(subscriber, this.selector, this.caught));
        };
        return CatchOperator;
    }());
    var CatchSubscriber = (function (_super) {
        __extends(CatchSubscriber, _super);
        function CatchSubscriber(destination, selector, caught) {
            var _this = _super.call(this, destination) || this;
            _this.selector = selector;
            _this.caught = caught;
            return _this;
        }
        CatchSubscriber.prototype.error = function (err) {
            if (!this.isStopped) {
                var result = void 0;
                try {
                    result = this.selector(err, this.caught);
                }
                catch (err2) {
                    _super.prototype.error.call(this, err2);
                    return;
                }
                this._unsubscribeAndRecycle();
                var innerSubscriber = new SimpleInnerSubscriber(this);
                this.add(innerSubscriber);
                var innerSubscription = innerSubscribe(result, innerSubscriber);
                if (innerSubscription !== innerSubscriber) {
                    this.add(innerSubscription);
                }
            }
        };
        return CatchSubscriber;
    }(SimpleOuterSubscriber));

    function combineAll(project) {
        return function (source) { return source.lift(new CombineLatestOperator(project)); };
    }

    function combineLatest$1() {
        var observables = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            observables[_i] = arguments[_i];
        }
        var project = null;
        if (typeof observables[observables.length - 1] === 'function') {
            project = observables.pop();
        }
        if (observables.length === 1 && isArray(observables[0])) {
            observables = observables[0].slice();
        }
        return function (source) { return source.lift.call(from([source].concat(observables)), new CombineLatestOperator(project)); };
    }

    function concat$1() {
        var observables = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            observables[_i] = arguments[_i];
        }
        return function (source) { return source.lift.call(concat.apply(void 0, [source].concat(observables))); };
    }

    function concatMap(project, resultSelector) {
        return mergeMap(project, resultSelector, 1);
    }

    function concatMapTo(innerObservable, resultSelector) {
        return concatMap(function () { return innerObservable; }, resultSelector);
    }

    function count(predicate) {
        return function (source) { return source.lift(new CountOperator(predicate, source)); };
    }
    var CountOperator = (function () {
        function CountOperator(predicate, source) {
            this.predicate = predicate;
            this.source = source;
        }
        CountOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new CountSubscriber(subscriber, this.predicate, this.source));
        };
        return CountOperator;
    }());
    var CountSubscriber = (function (_super) {
        __extends(CountSubscriber, _super);
        function CountSubscriber(destination, predicate, source) {
            var _this = _super.call(this, destination) || this;
            _this.predicate = predicate;
            _this.source = source;
            _this.count = 0;
            _this.index = 0;
            return _this;
        }
        CountSubscriber.prototype._next = function (value) {
            if (this.predicate) {
                this._tryPredicate(value);
            }
            else {
                this.count++;
            }
        };
        CountSubscriber.prototype._tryPredicate = function (value) {
            var result;
            try {
                result = this.predicate(value, this.index++, this.source);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            if (result) {
                this.count++;
            }
        };
        CountSubscriber.prototype._complete = function () {
            this.destination.next(this.count);
            this.destination.complete();
        };
        return CountSubscriber;
    }(Subscriber));

    function debounce(durationSelector) {
        return function (source) { return source.lift(new DebounceOperator(durationSelector)); };
    }
    var DebounceOperator = (function () {
        function DebounceOperator(durationSelector) {
            this.durationSelector = durationSelector;
        }
        DebounceOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new DebounceSubscriber(subscriber, this.durationSelector));
        };
        return DebounceOperator;
    }());
    var DebounceSubscriber = (function (_super) {
        __extends(DebounceSubscriber, _super);
        function DebounceSubscriber(destination, durationSelector) {
            var _this = _super.call(this, destination) || this;
            _this.durationSelector = durationSelector;
            _this.hasValue = false;
            return _this;
        }
        DebounceSubscriber.prototype._next = function (value) {
            try {
                var result = this.durationSelector.call(this, value);
                if (result) {
                    this._tryNext(value, result);
                }
            }
            catch (err) {
                this.destination.error(err);
            }
        };
        DebounceSubscriber.prototype._complete = function () {
            this.emitValue();
            this.destination.complete();
        };
        DebounceSubscriber.prototype._tryNext = function (value, duration) {
            var subscription = this.durationSubscription;
            this.value = value;
            this.hasValue = true;
            if (subscription) {
                subscription.unsubscribe();
                this.remove(subscription);
            }
            subscription = innerSubscribe(duration, new SimpleInnerSubscriber(this));
            if (subscription && !subscription.closed) {
                this.add(this.durationSubscription = subscription);
            }
        };
        DebounceSubscriber.prototype.notifyNext = function () {
            this.emitValue();
        };
        DebounceSubscriber.prototype.notifyComplete = function () {
            this.emitValue();
        };
        DebounceSubscriber.prototype.emitValue = function () {
            if (this.hasValue) {
                var value = this.value;
                var subscription = this.durationSubscription;
                if (subscription) {
                    this.durationSubscription = undefined;
                    subscription.unsubscribe();
                    this.remove(subscription);
                }
                this.value = undefined;
                this.hasValue = false;
                _super.prototype._next.call(this, value);
            }
        };
        return DebounceSubscriber;
    }(SimpleOuterSubscriber));

    function debounceTime(dueTime, scheduler) {
        if (scheduler === void 0) { scheduler = async; }
        return function (source) { return source.lift(new DebounceTimeOperator(dueTime, scheduler)); };
    }
    var DebounceTimeOperator = (function () {
        function DebounceTimeOperator(dueTime, scheduler) {
            this.dueTime = dueTime;
            this.scheduler = scheduler;
        }
        DebounceTimeOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new DebounceTimeSubscriber(subscriber, this.dueTime, this.scheduler));
        };
        return DebounceTimeOperator;
    }());
    var DebounceTimeSubscriber = (function (_super) {
        __extends(DebounceTimeSubscriber, _super);
        function DebounceTimeSubscriber(destination, dueTime, scheduler) {
            var _this = _super.call(this, destination) || this;
            _this.dueTime = dueTime;
            _this.scheduler = scheduler;
            _this.debouncedSubscription = null;
            _this.lastValue = null;
            _this.hasValue = false;
            return _this;
        }
        DebounceTimeSubscriber.prototype._next = function (value) {
            this.clearDebounce();
            this.lastValue = value;
            this.hasValue = true;
            this.add(this.debouncedSubscription = this.scheduler.schedule(dispatchNext$2, this.dueTime, this));
        };
        DebounceTimeSubscriber.prototype._complete = function () {
            this.debouncedNext();
            this.destination.complete();
        };
        DebounceTimeSubscriber.prototype.debouncedNext = function () {
            this.clearDebounce();
            if (this.hasValue) {
                var lastValue = this.lastValue;
                this.lastValue = null;
                this.hasValue = false;
                this.destination.next(lastValue);
            }
        };
        DebounceTimeSubscriber.prototype.clearDebounce = function () {
            var debouncedSubscription = this.debouncedSubscription;
            if (debouncedSubscription !== null) {
                this.remove(debouncedSubscription);
                debouncedSubscription.unsubscribe();
                this.debouncedSubscription = null;
            }
        };
        return DebounceTimeSubscriber;
    }(Subscriber));
    function dispatchNext$2(subscriber) {
        subscriber.debouncedNext();
    }

    function defaultIfEmpty(defaultValue) {
        if (defaultValue === void 0) { defaultValue = null; }
        return function (source) { return source.lift(new DefaultIfEmptyOperator(defaultValue)); };
    }
    var DefaultIfEmptyOperator = (function () {
        function DefaultIfEmptyOperator(defaultValue) {
            this.defaultValue = defaultValue;
        }
        DefaultIfEmptyOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new DefaultIfEmptySubscriber(subscriber, this.defaultValue));
        };
        return DefaultIfEmptyOperator;
    }());
    var DefaultIfEmptySubscriber = (function (_super) {
        __extends(DefaultIfEmptySubscriber, _super);
        function DefaultIfEmptySubscriber(destination, defaultValue) {
            var _this = _super.call(this, destination) || this;
            _this.defaultValue = defaultValue;
            _this.isEmpty = true;
            return _this;
        }
        DefaultIfEmptySubscriber.prototype._next = function (value) {
            this.isEmpty = false;
            this.destination.next(value);
        };
        DefaultIfEmptySubscriber.prototype._complete = function () {
            if (this.isEmpty) {
                this.destination.next(this.defaultValue);
            }
            this.destination.complete();
        };
        return DefaultIfEmptySubscriber;
    }(Subscriber));

    function isDate(value) {
        return value instanceof Date && !isNaN(+value);
    }

    function delay(delay, scheduler) {
        if (scheduler === void 0) { scheduler = async; }
        var absoluteDelay = isDate(delay);
        var delayFor = absoluteDelay ? (+delay - scheduler.now()) : Math.abs(delay);
        return function (source) { return source.lift(new DelayOperator(delayFor, scheduler)); };
    }
    var DelayOperator = (function () {
        function DelayOperator(delay, scheduler) {
            this.delay = delay;
            this.scheduler = scheduler;
        }
        DelayOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new DelaySubscriber(subscriber, this.delay, this.scheduler));
        };
        return DelayOperator;
    }());
    var DelaySubscriber = (function (_super) {
        __extends(DelaySubscriber, _super);
        function DelaySubscriber(destination, delay, scheduler) {
            var _this = _super.call(this, destination) || this;
            _this.delay = delay;
            _this.scheduler = scheduler;
            _this.queue = [];
            _this.active = false;
            _this.errored = false;
            return _this;
        }
        DelaySubscriber.dispatch = function (state) {
            var source = state.source;
            var queue = source.queue;
            var scheduler = state.scheduler;
            var destination = state.destination;
            while (queue.length > 0 && (queue[0].time - scheduler.now()) <= 0) {
                queue.shift().notification.observe(destination);
            }
            if (queue.length > 0) {
                var delay_1 = Math.max(0, queue[0].time - scheduler.now());
                this.schedule(state, delay_1);
            }
            else {
                this.unsubscribe();
                source.active = false;
            }
        };
        DelaySubscriber.prototype._schedule = function (scheduler) {
            this.active = true;
            var destination = this.destination;
            destination.add(scheduler.schedule(DelaySubscriber.dispatch, this.delay, {
                source: this, destination: this.destination, scheduler: scheduler
            }));
        };
        DelaySubscriber.prototype.scheduleNotification = function (notification) {
            if (this.errored === true) {
                return;
            }
            var scheduler = this.scheduler;
            var message = new DelayMessage(scheduler.now() + this.delay, notification);
            this.queue.push(message);
            if (this.active === false) {
                this._schedule(scheduler);
            }
        };
        DelaySubscriber.prototype._next = function (value) {
            this.scheduleNotification(Notification.createNext(value));
        };
        DelaySubscriber.prototype._error = function (err) {
            this.errored = true;
            this.queue = [];
            this.destination.error(err);
            this.unsubscribe();
        };
        DelaySubscriber.prototype._complete = function () {
            this.scheduleNotification(Notification.createComplete());
            this.unsubscribe();
        };
        return DelaySubscriber;
    }(Subscriber));
    var DelayMessage = (function () {
        function DelayMessage(time, notification) {
            this.time = time;
            this.notification = notification;
        }
        return DelayMessage;
    }());

    function delayWhen(delayDurationSelector, subscriptionDelay) {
        if (subscriptionDelay) {
            return function (source) {
                return new SubscriptionDelayObservable(source, subscriptionDelay)
                    .lift(new DelayWhenOperator(delayDurationSelector));
            };
        }
        return function (source) { return source.lift(new DelayWhenOperator(delayDurationSelector)); };
    }
    var DelayWhenOperator = (function () {
        function DelayWhenOperator(delayDurationSelector) {
            this.delayDurationSelector = delayDurationSelector;
        }
        DelayWhenOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new DelayWhenSubscriber(subscriber, this.delayDurationSelector));
        };
        return DelayWhenOperator;
    }());
    var DelayWhenSubscriber = (function (_super) {
        __extends(DelayWhenSubscriber, _super);
        function DelayWhenSubscriber(destination, delayDurationSelector) {
            var _this = _super.call(this, destination) || this;
            _this.delayDurationSelector = delayDurationSelector;
            _this.completed = false;
            _this.delayNotifierSubscriptions = [];
            _this.index = 0;
            return _this;
        }
        DelayWhenSubscriber.prototype.notifyNext = function (outerValue, _innerValue, _outerIndex, _innerIndex, innerSub) {
            this.destination.next(outerValue);
            this.removeSubscription(innerSub);
            this.tryComplete();
        };
        DelayWhenSubscriber.prototype.notifyError = function (error, innerSub) {
            this._error(error);
        };
        DelayWhenSubscriber.prototype.notifyComplete = function (innerSub) {
            var value = this.removeSubscription(innerSub);
            if (value) {
                this.destination.next(value);
            }
            this.tryComplete();
        };
        DelayWhenSubscriber.prototype._next = function (value) {
            var index = this.index++;
            try {
                var delayNotifier = this.delayDurationSelector(value, index);
                if (delayNotifier) {
                    this.tryDelay(delayNotifier, value);
                }
            }
            catch (err) {
                this.destination.error(err);
            }
        };
        DelayWhenSubscriber.prototype._complete = function () {
            this.completed = true;
            this.tryComplete();
            this.unsubscribe();
        };
        DelayWhenSubscriber.prototype.removeSubscription = function (subscription) {
            subscription.unsubscribe();
            var subscriptionIdx = this.delayNotifierSubscriptions.indexOf(subscription);
            if (subscriptionIdx !== -1) {
                this.delayNotifierSubscriptions.splice(subscriptionIdx, 1);
            }
            return subscription.outerValue;
        };
        DelayWhenSubscriber.prototype.tryDelay = function (delayNotifier, value) {
            var notifierSubscription = subscribeToResult(this, delayNotifier, value);
            if (notifierSubscription && !notifierSubscription.closed) {
                var destination = this.destination;
                destination.add(notifierSubscription);
                this.delayNotifierSubscriptions.push(notifierSubscription);
            }
        };
        DelayWhenSubscriber.prototype.tryComplete = function () {
            if (this.completed && this.delayNotifierSubscriptions.length === 0) {
                this.destination.complete();
            }
        };
        return DelayWhenSubscriber;
    }(OuterSubscriber));
    var SubscriptionDelayObservable = (function (_super) {
        __extends(SubscriptionDelayObservable, _super);
        function SubscriptionDelayObservable(source, subscriptionDelay) {
            var _this = _super.call(this) || this;
            _this.source = source;
            _this.subscriptionDelay = subscriptionDelay;
            return _this;
        }
        SubscriptionDelayObservable.prototype._subscribe = function (subscriber) {
            this.subscriptionDelay.subscribe(new SubscriptionDelaySubscriber(subscriber, this.source));
        };
        return SubscriptionDelayObservable;
    }(Observable));
    var SubscriptionDelaySubscriber = (function (_super) {
        __extends(SubscriptionDelaySubscriber, _super);
        function SubscriptionDelaySubscriber(parent, source) {
            var _this = _super.call(this) || this;
            _this.parent = parent;
            _this.source = source;
            _this.sourceSubscribed = false;
            return _this;
        }
        SubscriptionDelaySubscriber.prototype._next = function (unused) {
            this.subscribeToSource();
        };
        SubscriptionDelaySubscriber.prototype._error = function (err) {
            this.unsubscribe();
            this.parent.error(err);
        };
        SubscriptionDelaySubscriber.prototype._complete = function () {
            this.unsubscribe();
            this.subscribeToSource();
        };
        SubscriptionDelaySubscriber.prototype.subscribeToSource = function () {
            if (!this.sourceSubscribed) {
                this.sourceSubscribed = true;
                this.unsubscribe();
                this.source.subscribe(this.parent);
            }
        };
        return SubscriptionDelaySubscriber;
    }(Subscriber));

    function dematerialize() {
        return function dematerializeOperatorFunction(source) {
            return source.lift(new DeMaterializeOperator());
        };
    }
    var DeMaterializeOperator = (function () {
        function DeMaterializeOperator() {
        }
        DeMaterializeOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new DeMaterializeSubscriber(subscriber));
        };
        return DeMaterializeOperator;
    }());
    var DeMaterializeSubscriber = (function (_super) {
        __extends(DeMaterializeSubscriber, _super);
        function DeMaterializeSubscriber(destination) {
            return _super.call(this, destination) || this;
        }
        DeMaterializeSubscriber.prototype._next = function (value) {
            value.observe(this.destination);
        };
        return DeMaterializeSubscriber;
    }(Subscriber));

    function distinct(keySelector, flushes) {
        return function (source) { return source.lift(new DistinctOperator(keySelector, flushes)); };
    }
    var DistinctOperator = (function () {
        function DistinctOperator(keySelector, flushes) {
            this.keySelector = keySelector;
            this.flushes = flushes;
        }
        DistinctOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new DistinctSubscriber(subscriber, this.keySelector, this.flushes));
        };
        return DistinctOperator;
    }());
    var DistinctSubscriber = (function (_super) {
        __extends(DistinctSubscriber, _super);
        function DistinctSubscriber(destination, keySelector, flushes) {
            var _this = _super.call(this, destination) || this;
            _this.keySelector = keySelector;
            _this.values = new Set();
            if (flushes) {
                _this.add(innerSubscribe(flushes, new SimpleInnerSubscriber(_this)));
            }
            return _this;
        }
        DistinctSubscriber.prototype.notifyNext = function () {
            this.values.clear();
        };
        DistinctSubscriber.prototype.notifyError = function (error) {
            this._error(error);
        };
        DistinctSubscriber.prototype._next = function (value) {
            if (this.keySelector) {
                this._useKeySelector(value);
            }
            else {
                this._finalizeNext(value, value);
            }
        };
        DistinctSubscriber.prototype._useKeySelector = function (value) {
            var key;
            var destination = this.destination;
            try {
                key = this.keySelector(value);
            }
            catch (err) {
                destination.error(err);
                return;
            }
            this._finalizeNext(key, value);
        };
        DistinctSubscriber.prototype._finalizeNext = function (key, value) {
            var values = this.values;
            if (!values.has(key)) {
                values.add(key);
                this.destination.next(value);
            }
        };
        return DistinctSubscriber;
    }(SimpleOuterSubscriber));

    function distinctUntilChanged(compare, keySelector) {
        return function (source) { return source.lift(new DistinctUntilChangedOperator(compare, keySelector)); };
    }
    var DistinctUntilChangedOperator = (function () {
        function DistinctUntilChangedOperator(compare, keySelector) {
            this.compare = compare;
            this.keySelector = keySelector;
        }
        DistinctUntilChangedOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new DistinctUntilChangedSubscriber(subscriber, this.compare, this.keySelector));
        };
        return DistinctUntilChangedOperator;
    }());
    var DistinctUntilChangedSubscriber = (function (_super) {
        __extends(DistinctUntilChangedSubscriber, _super);
        function DistinctUntilChangedSubscriber(destination, compare, keySelector) {
            var _this = _super.call(this, destination) || this;
            _this.keySelector = keySelector;
            _this.hasKey = false;
            if (typeof compare === 'function') {
                _this.compare = compare;
            }
            return _this;
        }
        DistinctUntilChangedSubscriber.prototype.compare = function (x, y) {
            return x === y;
        };
        DistinctUntilChangedSubscriber.prototype._next = function (value) {
            var key;
            try {
                var keySelector = this.keySelector;
                key = keySelector ? keySelector(value) : value;
            }
            catch (err) {
                return this.destination.error(err);
            }
            var result = false;
            if (this.hasKey) {
                try {
                    var compare = this.compare;
                    result = compare(this.key, key);
                }
                catch (err) {
                    return this.destination.error(err);
                }
            }
            else {
                this.hasKey = true;
            }
            if (!result) {
                this.key = key;
                this.destination.next(value);
            }
        };
        return DistinctUntilChangedSubscriber;
    }(Subscriber));

    function distinctUntilKeyChanged(key, compare) {
        return distinctUntilChanged(function (x, y) { return compare ? compare(x[key], y[key]) : x[key] === y[key]; });
    }

    function throwIfEmpty(errorFactory) {
        if (errorFactory === void 0) { errorFactory = defaultErrorFactory; }
        return function (source) {
            return source.lift(new ThrowIfEmptyOperator(errorFactory));
        };
    }
    var ThrowIfEmptyOperator = (function () {
        function ThrowIfEmptyOperator(errorFactory) {
            this.errorFactory = errorFactory;
        }
        ThrowIfEmptyOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new ThrowIfEmptySubscriber(subscriber, this.errorFactory));
        };
        return ThrowIfEmptyOperator;
    }());
    var ThrowIfEmptySubscriber = (function (_super) {
        __extends(ThrowIfEmptySubscriber, _super);
        function ThrowIfEmptySubscriber(destination, errorFactory) {
            var _this = _super.call(this, destination) || this;
            _this.errorFactory = errorFactory;
            _this.hasValue = false;
            return _this;
        }
        ThrowIfEmptySubscriber.prototype._next = function (value) {
            this.hasValue = true;
            this.destination.next(value);
        };
        ThrowIfEmptySubscriber.prototype._complete = function () {
            if (!this.hasValue) {
                var err = void 0;
                try {
                    err = this.errorFactory();
                }
                catch (e) {
                    err = e;
                }
                this.destination.error(err);
            }
            else {
                return this.destination.complete();
            }
        };
        return ThrowIfEmptySubscriber;
    }(Subscriber));
    function defaultErrorFactory() {
        return new EmptyError();
    }

    function take(count) {
        return function (source) {
            if (count === 0) {
                return empty$1();
            }
            else {
                return source.lift(new TakeOperator(count));
            }
        };
    }
    var TakeOperator = (function () {
        function TakeOperator(total) {
            this.total = total;
            if (this.total < 0) {
                throw new ArgumentOutOfRangeError;
            }
        }
        TakeOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new TakeSubscriber(subscriber, this.total));
        };
        return TakeOperator;
    }());
    var TakeSubscriber = (function (_super) {
        __extends(TakeSubscriber, _super);
        function TakeSubscriber(destination, total) {
            var _this = _super.call(this, destination) || this;
            _this.total = total;
            _this.count = 0;
            return _this;
        }
        TakeSubscriber.prototype._next = function (value) {
            var total = this.total;
            var count = ++this.count;
            if (count <= total) {
                this.destination.next(value);
                if (count === total) {
                    this.destination.complete();
                    this.unsubscribe();
                }
            }
        };
        return TakeSubscriber;
    }(Subscriber));

    function elementAt(index, defaultValue) {
        if (index < 0) {
            throw new ArgumentOutOfRangeError();
        }
        var hasDefaultValue = arguments.length >= 2;
        return function (source) { return source.pipe(filter(function (v, i) { return i === index; }), take(1), hasDefaultValue
            ? defaultIfEmpty(defaultValue)
            : throwIfEmpty(function () { return new ArgumentOutOfRangeError(); })); };
    }

    function endWith() {
        var array = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            array[_i] = arguments[_i];
        }
        return function (source) { return concat(source, of.apply(void 0, array)); };
    }

    function every(predicate, thisArg) {
        return function (source) { return source.lift(new EveryOperator(predicate, thisArg, source)); };
    }
    var EveryOperator = (function () {
        function EveryOperator(predicate, thisArg, source) {
            this.predicate = predicate;
            this.thisArg = thisArg;
            this.source = source;
        }
        EveryOperator.prototype.call = function (observer, source) {
            return source.subscribe(new EverySubscriber(observer, this.predicate, this.thisArg, this.source));
        };
        return EveryOperator;
    }());
    var EverySubscriber = (function (_super) {
        __extends(EverySubscriber, _super);
        function EverySubscriber(destination, predicate, thisArg, source) {
            var _this = _super.call(this, destination) || this;
            _this.predicate = predicate;
            _this.thisArg = thisArg;
            _this.source = source;
            _this.index = 0;
            _this.thisArg = thisArg || _this;
            return _this;
        }
        EverySubscriber.prototype.notifyComplete = function (everyValueMatch) {
            this.destination.next(everyValueMatch);
            this.destination.complete();
        };
        EverySubscriber.prototype._next = function (value) {
            var result = false;
            try {
                result = this.predicate.call(this.thisArg, value, this.index++, this.source);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            if (!result) {
                this.notifyComplete(false);
            }
        };
        EverySubscriber.prototype._complete = function () {
            this.notifyComplete(true);
        };
        return EverySubscriber;
    }(Subscriber));

    function exhaust() {
        return function (source) { return source.lift(new SwitchFirstOperator()); };
    }
    var SwitchFirstOperator = (function () {
        function SwitchFirstOperator() {
        }
        SwitchFirstOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new SwitchFirstSubscriber(subscriber));
        };
        return SwitchFirstOperator;
    }());
    var SwitchFirstSubscriber = (function (_super) {
        __extends(SwitchFirstSubscriber, _super);
        function SwitchFirstSubscriber(destination) {
            var _this = _super.call(this, destination) || this;
            _this.hasCompleted = false;
            _this.hasSubscription = false;
            return _this;
        }
        SwitchFirstSubscriber.prototype._next = function (value) {
            if (!this.hasSubscription) {
                this.hasSubscription = true;
                this.add(innerSubscribe(value, new SimpleInnerSubscriber(this)));
            }
        };
        SwitchFirstSubscriber.prototype._complete = function () {
            this.hasCompleted = true;
            if (!this.hasSubscription) {
                this.destination.complete();
            }
        };
        SwitchFirstSubscriber.prototype.notifyComplete = function () {
            this.hasSubscription = false;
            if (this.hasCompleted) {
                this.destination.complete();
            }
        };
        return SwitchFirstSubscriber;
    }(SimpleOuterSubscriber));

    function exhaustMap(project, resultSelector) {
        if (resultSelector) {
            return function (source) { return source.pipe(exhaustMap(function (a, i) { return from(project(a, i)).pipe(map(function (b, ii) { return resultSelector(a, b, i, ii); })); })); };
        }
        return function (source) {
            return source.lift(new ExhaustMapOperator(project));
        };
    }
    var ExhaustMapOperator = (function () {
        function ExhaustMapOperator(project) {
            this.project = project;
        }
        ExhaustMapOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new ExhaustMapSubscriber(subscriber, this.project));
        };
        return ExhaustMapOperator;
    }());
    var ExhaustMapSubscriber = (function (_super) {
        __extends(ExhaustMapSubscriber, _super);
        function ExhaustMapSubscriber(destination, project) {
            var _this = _super.call(this, destination) || this;
            _this.project = project;
            _this.hasSubscription = false;
            _this.hasCompleted = false;
            _this.index = 0;
            return _this;
        }
        ExhaustMapSubscriber.prototype._next = function (value) {
            if (!this.hasSubscription) {
                this.tryNext(value);
            }
        };
        ExhaustMapSubscriber.prototype.tryNext = function (value) {
            var result;
            var index = this.index++;
            try {
                result = this.project(value, index);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            this.hasSubscription = true;
            this._innerSub(result);
        };
        ExhaustMapSubscriber.prototype._innerSub = function (result) {
            var innerSubscriber = new SimpleInnerSubscriber(this);
            var destination = this.destination;
            destination.add(innerSubscriber);
            var innerSubscription = innerSubscribe(result, innerSubscriber);
            if (innerSubscription !== innerSubscriber) {
                destination.add(innerSubscription);
            }
        };
        ExhaustMapSubscriber.prototype._complete = function () {
            this.hasCompleted = true;
            if (!this.hasSubscription) {
                this.destination.complete();
            }
            this.unsubscribe();
        };
        ExhaustMapSubscriber.prototype.notifyNext = function (innerValue) {
            this.destination.next(innerValue);
        };
        ExhaustMapSubscriber.prototype.notifyError = function (err) {
            this.destination.error(err);
        };
        ExhaustMapSubscriber.prototype.notifyComplete = function () {
            this.hasSubscription = false;
            if (this.hasCompleted) {
                this.destination.complete();
            }
        };
        return ExhaustMapSubscriber;
    }(SimpleOuterSubscriber));

    function expand(project, concurrent, scheduler) {
        if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
        concurrent = (concurrent || 0) < 1 ? Number.POSITIVE_INFINITY : concurrent;
        return function (source) { return source.lift(new ExpandOperator(project, concurrent, scheduler)); };
    }
    var ExpandOperator = (function () {
        function ExpandOperator(project, concurrent, scheduler) {
            this.project = project;
            this.concurrent = concurrent;
            this.scheduler = scheduler;
        }
        ExpandOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new ExpandSubscriber(subscriber, this.project, this.concurrent, this.scheduler));
        };
        return ExpandOperator;
    }());
    var ExpandSubscriber = (function (_super) {
        __extends(ExpandSubscriber, _super);
        function ExpandSubscriber(destination, project, concurrent, scheduler) {
            var _this = _super.call(this, destination) || this;
            _this.project = project;
            _this.concurrent = concurrent;
            _this.scheduler = scheduler;
            _this.index = 0;
            _this.active = 0;
            _this.hasCompleted = false;
            if (concurrent < Number.POSITIVE_INFINITY) {
                _this.buffer = [];
            }
            return _this;
        }
        ExpandSubscriber.dispatch = function (arg) {
            var subscriber = arg.subscriber, result = arg.result, value = arg.value, index = arg.index;
            subscriber.subscribeToProjection(result, value, index);
        };
        ExpandSubscriber.prototype._next = function (value) {
            var destination = this.destination;
            if (destination.closed) {
                this._complete();
                return;
            }
            var index = this.index++;
            if (this.active < this.concurrent) {
                destination.next(value);
                try {
                    var project = this.project;
                    var result = project(value, index);
                    if (!this.scheduler) {
                        this.subscribeToProjection(result, value, index);
                    }
                    else {
                        var state = { subscriber: this, result: result, value: value, index: index };
                        var destination_1 = this.destination;
                        destination_1.add(this.scheduler.schedule(ExpandSubscriber.dispatch, 0, state));
                    }
                }
                catch (e) {
                    destination.error(e);
                }
            }
            else {
                this.buffer.push(value);
            }
        };
        ExpandSubscriber.prototype.subscribeToProjection = function (result, value, index) {
            this.active++;
            var destination = this.destination;
            destination.add(innerSubscribe(result, new SimpleInnerSubscriber(this)));
        };
        ExpandSubscriber.prototype._complete = function () {
            this.hasCompleted = true;
            if (this.hasCompleted && this.active === 0) {
                this.destination.complete();
            }
            this.unsubscribe();
        };
        ExpandSubscriber.prototype.notifyNext = function (innerValue) {
            this._next(innerValue);
        };
        ExpandSubscriber.prototype.notifyComplete = function () {
            var buffer = this.buffer;
            this.active--;
            if (buffer && buffer.length > 0) {
                this._next(buffer.shift());
            }
            if (this.hasCompleted && this.active === 0) {
                this.destination.complete();
            }
        };
        return ExpandSubscriber;
    }(SimpleOuterSubscriber));

    function finalize(callback) {
        return function (source) { return source.lift(new FinallyOperator(callback)); };
    }
    var FinallyOperator = (function () {
        function FinallyOperator(callback) {
            this.callback = callback;
        }
        FinallyOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new FinallySubscriber(subscriber, this.callback));
        };
        return FinallyOperator;
    }());
    var FinallySubscriber = (function (_super) {
        __extends(FinallySubscriber, _super);
        function FinallySubscriber(destination, callback) {
            var _this = _super.call(this, destination) || this;
            _this.add(new Subscription(callback));
            return _this;
        }
        return FinallySubscriber;
    }(Subscriber));

    function find(predicate, thisArg) {
        if (typeof predicate !== 'function') {
            throw new TypeError('predicate is not a function');
        }
        return function (source) { return source.lift(new FindValueOperator(predicate, source, false, thisArg)); };
    }
    var FindValueOperator = (function () {
        function FindValueOperator(predicate, source, yieldIndex, thisArg) {
            this.predicate = predicate;
            this.source = source;
            this.yieldIndex = yieldIndex;
            this.thisArg = thisArg;
        }
        FindValueOperator.prototype.call = function (observer, source) {
            return source.subscribe(new FindValueSubscriber(observer, this.predicate, this.source, this.yieldIndex, this.thisArg));
        };
        return FindValueOperator;
    }());
    var FindValueSubscriber = (function (_super) {
        __extends(FindValueSubscriber, _super);
        function FindValueSubscriber(destination, predicate, source, yieldIndex, thisArg) {
            var _this = _super.call(this, destination) || this;
            _this.predicate = predicate;
            _this.source = source;
            _this.yieldIndex = yieldIndex;
            _this.thisArg = thisArg;
            _this.index = 0;
            return _this;
        }
        FindValueSubscriber.prototype.notifyComplete = function (value) {
            var destination = this.destination;
            destination.next(value);
            destination.complete();
            this.unsubscribe();
        };
        FindValueSubscriber.prototype._next = function (value) {
            var _a = this, predicate = _a.predicate, thisArg = _a.thisArg;
            var index = this.index++;
            try {
                var result = predicate.call(thisArg || this, value, index, this.source);
                if (result) {
                    this.notifyComplete(this.yieldIndex ? index : value);
                }
            }
            catch (err) {
                this.destination.error(err);
            }
        };
        FindValueSubscriber.prototype._complete = function () {
            this.notifyComplete(this.yieldIndex ? -1 : undefined);
        };
        return FindValueSubscriber;
    }(Subscriber));

    function findIndex(predicate, thisArg) {
        return function (source) { return source.lift(new FindValueOperator(predicate, source, true, thisArg)); };
    }

    function first(predicate, defaultValue) {
        var hasDefaultValue = arguments.length >= 2;
        return function (source) { return source.pipe(predicate ? filter(function (v, i) { return predicate(v, i, source); }) : identity, take(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(function () { return new EmptyError(); })); };
    }

    function ignoreElements() {
        return function ignoreElementsOperatorFunction(source) {
            return source.lift(new IgnoreElementsOperator());
        };
    }
    var IgnoreElementsOperator = (function () {
        function IgnoreElementsOperator() {
        }
        IgnoreElementsOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new IgnoreElementsSubscriber(subscriber));
        };
        return IgnoreElementsOperator;
    }());
    var IgnoreElementsSubscriber = (function (_super) {
        __extends(IgnoreElementsSubscriber, _super);
        function IgnoreElementsSubscriber() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        IgnoreElementsSubscriber.prototype._next = function (unused) {
        };
        return IgnoreElementsSubscriber;
    }(Subscriber));

    function isEmpty() {
        return function (source) { return source.lift(new IsEmptyOperator()); };
    }
    var IsEmptyOperator = (function () {
        function IsEmptyOperator() {
        }
        IsEmptyOperator.prototype.call = function (observer, source) {
            return source.subscribe(new IsEmptySubscriber(observer));
        };
        return IsEmptyOperator;
    }());
    var IsEmptySubscriber = (function (_super) {
        __extends(IsEmptySubscriber, _super);
        function IsEmptySubscriber(destination) {
            return _super.call(this, destination) || this;
        }
        IsEmptySubscriber.prototype.notifyComplete = function (isEmpty) {
            var destination = this.destination;
            destination.next(isEmpty);
            destination.complete();
        };
        IsEmptySubscriber.prototype._next = function (value) {
            this.notifyComplete(false);
        };
        IsEmptySubscriber.prototype._complete = function () {
            this.notifyComplete(true);
        };
        return IsEmptySubscriber;
    }(Subscriber));

    function takeLast(count) {
        return function takeLastOperatorFunction(source) {
            if (count === 0) {
                return empty$1();
            }
            else {
                return source.lift(new TakeLastOperator(count));
            }
        };
    }
    var TakeLastOperator = (function () {
        function TakeLastOperator(total) {
            this.total = total;
            if (this.total < 0) {
                throw new ArgumentOutOfRangeError;
            }
        }
        TakeLastOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new TakeLastSubscriber(subscriber, this.total));
        };
        return TakeLastOperator;
    }());
    var TakeLastSubscriber = (function (_super) {
        __extends(TakeLastSubscriber, _super);
        function TakeLastSubscriber(destination, total) {
            var _this = _super.call(this, destination) || this;
            _this.total = total;
            _this.ring = new Array();
            _this.count = 0;
            return _this;
        }
        TakeLastSubscriber.prototype._next = function (value) {
            var ring = this.ring;
            var total = this.total;
            var count = this.count++;
            if (ring.length < total) {
                ring.push(value);
            }
            else {
                var index = count % total;
                ring[index] = value;
            }
        };
        TakeLastSubscriber.prototype._complete = function () {
            var destination = this.destination;
            var count = this.count;
            if (count > 0) {
                var total = this.count >= this.total ? this.total : this.count;
                var ring = this.ring;
                for (var i = 0; i < total; i++) {
                    var idx = (count++) % total;
                    destination.next(ring[idx]);
                }
            }
            destination.complete();
        };
        return TakeLastSubscriber;
    }(Subscriber));

    function last(predicate, defaultValue) {
        var hasDefaultValue = arguments.length >= 2;
        return function (source) { return source.pipe(predicate ? filter(function (v, i) { return predicate(v, i, source); }) : identity, takeLast(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(function () { return new EmptyError(); })); };
    }

    function mapTo(value) {
        return function (source) { return source.lift(new MapToOperator(value)); };
    }
    var MapToOperator = (function () {
        function MapToOperator(value) {
            this.value = value;
        }
        MapToOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new MapToSubscriber(subscriber, this.value));
        };
        return MapToOperator;
    }());
    var MapToSubscriber = (function (_super) {
        __extends(MapToSubscriber, _super);
        function MapToSubscriber(destination, value) {
            var _this = _super.call(this, destination) || this;
            _this.value = value;
            return _this;
        }
        MapToSubscriber.prototype._next = function (x) {
            this.destination.next(this.value);
        };
        return MapToSubscriber;
    }(Subscriber));

    function materialize() {
        return function materializeOperatorFunction(source) {
            return source.lift(new MaterializeOperator());
        };
    }
    var MaterializeOperator = (function () {
        function MaterializeOperator() {
        }
        MaterializeOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new MaterializeSubscriber(subscriber));
        };
        return MaterializeOperator;
    }());
    var MaterializeSubscriber = (function (_super) {
        __extends(MaterializeSubscriber, _super);
        function MaterializeSubscriber(destination) {
            return _super.call(this, destination) || this;
        }
        MaterializeSubscriber.prototype._next = function (value) {
            this.destination.next(Notification.createNext(value));
        };
        MaterializeSubscriber.prototype._error = function (err) {
            var destination = this.destination;
            destination.next(Notification.createError(err));
            destination.complete();
        };
        MaterializeSubscriber.prototype._complete = function () {
            var destination = this.destination;
            destination.next(Notification.createComplete());
            destination.complete();
        };
        return MaterializeSubscriber;
    }(Subscriber));

    function scan(accumulator, seed) {
        var hasSeed = false;
        if (arguments.length >= 2) {
            hasSeed = true;
        }
        return function scanOperatorFunction(source) {
            return source.lift(new ScanOperator(accumulator, seed, hasSeed));
        };
    }
    var ScanOperator = (function () {
        function ScanOperator(accumulator, seed, hasSeed) {
            if (hasSeed === void 0) { hasSeed = false; }
            this.accumulator = accumulator;
            this.seed = seed;
            this.hasSeed = hasSeed;
        }
        ScanOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new ScanSubscriber(subscriber, this.accumulator, this.seed, this.hasSeed));
        };
        return ScanOperator;
    }());
    var ScanSubscriber = (function (_super) {
        __extends(ScanSubscriber, _super);
        function ScanSubscriber(destination, accumulator, _seed, hasSeed) {
            var _this = _super.call(this, destination) || this;
            _this.accumulator = accumulator;
            _this._seed = _seed;
            _this.hasSeed = hasSeed;
            _this.index = 0;
            return _this;
        }
        Object.defineProperty(ScanSubscriber.prototype, "seed", {
            get: function () {
                return this._seed;
            },
            set: function (value) {
                this.hasSeed = true;
                this._seed = value;
            },
            enumerable: true,
            configurable: true
        });
        ScanSubscriber.prototype._next = function (value) {
            if (!this.hasSeed) {
                this.seed = value;
                this.destination.next(value);
            }
            else {
                return this._tryNext(value);
            }
        };
        ScanSubscriber.prototype._tryNext = function (value) {
            var index = this.index++;
            var result;
            try {
                result = this.accumulator(this.seed, value, index);
            }
            catch (err) {
                this.destination.error(err);
            }
            this.seed = result;
            this.destination.next(result);
        };
        return ScanSubscriber;
    }(Subscriber));

    function reduce(accumulator, seed) {
        if (arguments.length >= 2) {
            return function reduceOperatorFunctionWithSeed(source) {
                return pipe(scan(accumulator, seed), takeLast(1), defaultIfEmpty(seed))(source);
            };
        }
        return function reduceOperatorFunction(source) {
            return pipe(scan(function (acc, value, index) { return accumulator(acc, value, index + 1); }), takeLast(1))(source);
        };
    }

    function max(comparer) {
        var max = (typeof comparer === 'function')
            ? function (x, y) { return comparer(x, y) > 0 ? x : y; }
            : function (x, y) { return x > y ? x : y; };
        return reduce(max);
    }

    function merge$1() {
        var observables = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            observables[_i] = arguments[_i];
        }
        return function (source) { return source.lift.call(merge.apply(void 0, [source].concat(observables))); };
    }

    function mergeMapTo(innerObservable, resultSelector, concurrent) {
        if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
        if (typeof resultSelector === 'function') {
            return mergeMap(function () { return innerObservable; }, resultSelector, concurrent);
        }
        if (typeof resultSelector === 'number') {
            concurrent = resultSelector;
        }
        return mergeMap(function () { return innerObservable; }, concurrent);
    }

    function mergeScan(accumulator, seed, concurrent) {
        if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
        return function (source) { return source.lift(new MergeScanOperator(accumulator, seed, concurrent)); };
    }
    var MergeScanOperator = (function () {
        function MergeScanOperator(accumulator, seed, concurrent) {
            this.accumulator = accumulator;
            this.seed = seed;
            this.concurrent = concurrent;
        }
        MergeScanOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new MergeScanSubscriber(subscriber, this.accumulator, this.seed, this.concurrent));
        };
        return MergeScanOperator;
    }());
    var MergeScanSubscriber = (function (_super) {
        __extends(MergeScanSubscriber, _super);
        function MergeScanSubscriber(destination, accumulator, acc, concurrent) {
            var _this = _super.call(this, destination) || this;
            _this.accumulator = accumulator;
            _this.acc = acc;
            _this.concurrent = concurrent;
            _this.hasValue = false;
            _this.hasCompleted = false;
            _this.buffer = [];
            _this.active = 0;
            _this.index = 0;
            return _this;
        }
        MergeScanSubscriber.prototype._next = function (value) {
            if (this.active < this.concurrent) {
                var index = this.index++;
                var destination = this.destination;
                var ish = void 0;
                try {
                    var accumulator = this.accumulator;
                    ish = accumulator(this.acc, value, index);
                }
                catch (e) {
                    return destination.error(e);
                }
                this.active++;
                this._innerSub(ish);
            }
            else {
                this.buffer.push(value);
            }
        };
        MergeScanSubscriber.prototype._innerSub = function (ish) {
            var innerSubscriber = new SimpleInnerSubscriber(this);
            var destination = this.destination;
            destination.add(innerSubscriber);
            var innerSubscription = innerSubscribe(ish, innerSubscriber);
            if (innerSubscription !== innerSubscriber) {
                destination.add(innerSubscription);
            }
        };
        MergeScanSubscriber.prototype._complete = function () {
            this.hasCompleted = true;
            if (this.active === 0 && this.buffer.length === 0) {
                if (this.hasValue === false) {
                    this.destination.next(this.acc);
                }
                this.destination.complete();
            }
            this.unsubscribe();
        };
        MergeScanSubscriber.prototype.notifyNext = function (innerValue) {
            var destination = this.destination;
            this.acc = innerValue;
            this.hasValue = true;
            destination.next(innerValue);
        };
        MergeScanSubscriber.prototype.notifyComplete = function () {
            var buffer = this.buffer;
            this.active--;
            if (buffer.length > 0) {
                this._next(buffer.shift());
            }
            else if (this.active === 0 && this.hasCompleted) {
                if (this.hasValue === false) {
                    this.destination.next(this.acc);
                }
                this.destination.complete();
            }
        };
        return MergeScanSubscriber;
    }(SimpleOuterSubscriber));

    function min(comparer) {
        var min = (typeof comparer === 'function')
            ? function (x, y) { return comparer(x, y) < 0 ? x : y; }
            : function (x, y) { return x < y ? x : y; };
        return reduce(min);
    }

    function multicast(subjectOrSubjectFactory, selector) {
        return function multicastOperatorFunction(source) {
            var subjectFactory;
            if (typeof subjectOrSubjectFactory === 'function') {
                subjectFactory = subjectOrSubjectFactory;
            }
            else {
                subjectFactory = function subjectFactory() {
                    return subjectOrSubjectFactory;
                };
            }
            if (typeof selector === 'function') {
                return source.lift(new MulticastOperator(subjectFactory, selector));
            }
            var connectable = Object.create(source, connectableObservableDescriptor);
            connectable.source = source;
            connectable.subjectFactory = subjectFactory;
            return connectable;
        };
    }
    var MulticastOperator = (function () {
        function MulticastOperator(subjectFactory, selector) {
            this.subjectFactory = subjectFactory;
            this.selector = selector;
        }
        MulticastOperator.prototype.call = function (subscriber, source) {
            var selector = this.selector;
            var subject = this.subjectFactory();
            var subscription = selector(subject).subscribe(subscriber);
            subscription.add(source.subscribe(subject));
            return subscription;
        };
        return MulticastOperator;
    }());

    function onErrorResumeNext$1() {
        var nextSources = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            nextSources[_i] = arguments[_i];
        }
        if (nextSources.length === 1 && isArray(nextSources[0])) {
            nextSources = nextSources[0];
        }
        return function (source) { return source.lift(new OnErrorResumeNextOperator(nextSources)); };
    }
    var OnErrorResumeNextOperator = (function () {
        function OnErrorResumeNextOperator(nextSources) {
            this.nextSources = nextSources;
        }
        OnErrorResumeNextOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new OnErrorResumeNextSubscriber(subscriber, this.nextSources));
        };
        return OnErrorResumeNextOperator;
    }());
    var OnErrorResumeNextSubscriber = (function (_super) {
        __extends(OnErrorResumeNextSubscriber, _super);
        function OnErrorResumeNextSubscriber(destination, nextSources) {
            var _this = _super.call(this, destination) || this;
            _this.destination = destination;
            _this.nextSources = nextSources;
            return _this;
        }
        OnErrorResumeNextSubscriber.prototype.notifyError = function () {
            this.subscribeToNextSource();
        };
        OnErrorResumeNextSubscriber.prototype.notifyComplete = function () {
            this.subscribeToNextSource();
        };
        OnErrorResumeNextSubscriber.prototype._error = function (err) {
            this.subscribeToNextSource();
            this.unsubscribe();
        };
        OnErrorResumeNextSubscriber.prototype._complete = function () {
            this.subscribeToNextSource();
            this.unsubscribe();
        };
        OnErrorResumeNextSubscriber.prototype.subscribeToNextSource = function () {
            var next = this.nextSources.shift();
            if (!!next) {
                var innerSubscriber = new SimpleInnerSubscriber(this);
                var destination = this.destination;
                destination.add(innerSubscriber);
                var innerSubscription = innerSubscribe(next, innerSubscriber);
                if (innerSubscription !== innerSubscriber) {
                    destination.add(innerSubscription);
                }
            }
            else {
                this.destination.complete();
            }
        };
        return OnErrorResumeNextSubscriber;
    }(SimpleOuterSubscriber));

    function pairwise() {
        return function (source) { return source.lift(new PairwiseOperator()); };
    }
    var PairwiseOperator = (function () {
        function PairwiseOperator() {
        }
        PairwiseOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new PairwiseSubscriber(subscriber));
        };
        return PairwiseOperator;
    }());
    var PairwiseSubscriber = (function (_super) {
        __extends(PairwiseSubscriber, _super);
        function PairwiseSubscriber(destination) {
            var _this = _super.call(this, destination) || this;
            _this.hasPrev = false;
            return _this;
        }
        PairwiseSubscriber.prototype._next = function (value) {
            var pair;
            if (this.hasPrev) {
                pair = [this.prev, value];
            }
            else {
                this.hasPrev = true;
            }
            this.prev = value;
            if (pair) {
                this.destination.next(pair);
            }
        };
        return PairwiseSubscriber;
    }(Subscriber));

    function partition$1(predicate, thisArg) {
        return function (source) { return [
            filter(predicate, thisArg)(source),
            filter(not(predicate, thisArg))(source)
        ]; };
    }

    function pluck() {
        var properties = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            properties[_i] = arguments[_i];
        }
        var length = properties.length;
        if (length === 0) {
            throw new Error('list of properties cannot be empty.');
        }
        return function (source) { return map(plucker(properties, length))(source); };
    }
    function plucker(props, length) {
        var mapper = function (x) {
            var currentProp = x;
            for (var i = 0; i < length; i++) {
                var p = currentProp != null ? currentProp[props[i]] : undefined;
                if (p !== void 0) {
                    currentProp = p;
                }
                else {
                    return undefined;
                }
            }
            return currentProp;
        };
        return mapper;
    }

    function publish(selector) {
        return selector ?
            multicast(function () { return new Subject(); }, selector) :
            multicast(new Subject());
    }

    function publishBehavior(value) {
        return function (source) { return multicast(new BehaviorSubject(value))(source); };
    }

    function publishLast() {
        return function (source) { return multicast(new AsyncSubject())(source); };
    }

    function publishReplay(bufferSize, windowTime, selectorOrScheduler, scheduler) {
        if (selectorOrScheduler && typeof selectorOrScheduler !== 'function') {
            scheduler = selectorOrScheduler;
        }
        var selector = typeof selectorOrScheduler === 'function' ? selectorOrScheduler : undefined;
        var subject = new ReplaySubject(bufferSize, windowTime, scheduler);
        return function (source) { return multicast(function () { return subject; }, selector)(source); };
    }

    function race$1() {
        var observables = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            observables[_i] = arguments[_i];
        }
        return function raceOperatorFunction(source) {
            if (observables.length === 1 && isArray(observables[0])) {
                observables = observables[0];
            }
            return source.lift.call(race.apply(void 0, [source].concat(observables)));
        };
    }

    function repeat(count) {
        if (count === void 0) { count = -1; }
        return function (source) {
            if (count === 0) {
                return empty$1();
            }
            else if (count < 0) {
                return source.lift(new RepeatOperator(-1, source));
            }
            else {
                return source.lift(new RepeatOperator(count - 1, source));
            }
        };
    }
    var RepeatOperator = (function () {
        function RepeatOperator(count, source) {
            this.count = count;
            this.source = source;
        }
        RepeatOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new RepeatSubscriber(subscriber, this.count, this.source));
        };
        return RepeatOperator;
    }());
    var RepeatSubscriber = (function (_super) {
        __extends(RepeatSubscriber, _super);
        function RepeatSubscriber(destination, count, source) {
            var _this = _super.call(this, destination) || this;
            _this.count = count;
            _this.source = source;
            return _this;
        }
        RepeatSubscriber.prototype.complete = function () {
            if (!this.isStopped) {
                var _a = this, source = _a.source, count = _a.count;
                if (count === 0) {
                    return _super.prototype.complete.call(this);
                }
                else if (count > -1) {
                    this.count = count - 1;
                }
                source.subscribe(this._unsubscribeAndRecycle());
            }
        };
        return RepeatSubscriber;
    }(Subscriber));

    function repeatWhen(notifier) {
        return function (source) { return source.lift(new RepeatWhenOperator(notifier)); };
    }
    var RepeatWhenOperator = (function () {
        function RepeatWhenOperator(notifier) {
            this.notifier = notifier;
        }
        RepeatWhenOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new RepeatWhenSubscriber(subscriber, this.notifier, source));
        };
        return RepeatWhenOperator;
    }());
    var RepeatWhenSubscriber = (function (_super) {
        __extends(RepeatWhenSubscriber, _super);
        function RepeatWhenSubscriber(destination, notifier, source) {
            var _this = _super.call(this, destination) || this;
            _this.notifier = notifier;
            _this.source = source;
            _this.sourceIsBeingSubscribedTo = true;
            return _this;
        }
        RepeatWhenSubscriber.prototype.notifyNext = function () {
            this.sourceIsBeingSubscribedTo = true;
            this.source.subscribe(this);
        };
        RepeatWhenSubscriber.prototype.notifyComplete = function () {
            if (this.sourceIsBeingSubscribedTo === false) {
                return _super.prototype.complete.call(this);
            }
        };
        RepeatWhenSubscriber.prototype.complete = function () {
            this.sourceIsBeingSubscribedTo = false;
            if (!this.isStopped) {
                if (!this.retries) {
                    this.subscribeToRetries();
                }
                if (!this.retriesSubscription || this.retriesSubscription.closed) {
                    return _super.prototype.complete.call(this);
                }
                this._unsubscribeAndRecycle();
                this.notifications.next(undefined);
            }
        };
        RepeatWhenSubscriber.prototype._unsubscribe = function () {
            var _a = this, notifications = _a.notifications, retriesSubscription = _a.retriesSubscription;
            if (notifications) {
                notifications.unsubscribe();
                this.notifications = undefined;
            }
            if (retriesSubscription) {
                retriesSubscription.unsubscribe();
                this.retriesSubscription = undefined;
            }
            this.retries = undefined;
        };
        RepeatWhenSubscriber.prototype._unsubscribeAndRecycle = function () {
            var _unsubscribe = this._unsubscribe;
            this._unsubscribe = null;
            _super.prototype._unsubscribeAndRecycle.call(this);
            this._unsubscribe = _unsubscribe;
            return this;
        };
        RepeatWhenSubscriber.prototype.subscribeToRetries = function () {
            this.notifications = new Subject();
            var retries;
            try {
                var notifier = this.notifier;
                retries = notifier(this.notifications);
            }
            catch (e) {
                return _super.prototype.complete.call(this);
            }
            this.retries = retries;
            this.retriesSubscription = innerSubscribe(retries, new SimpleInnerSubscriber(this));
        };
        return RepeatWhenSubscriber;
    }(SimpleOuterSubscriber));

    function retry(count) {
        if (count === void 0) { count = -1; }
        return function (source) { return source.lift(new RetryOperator(count, source)); };
    }
    var RetryOperator = (function () {
        function RetryOperator(count, source) {
            this.count = count;
            this.source = source;
        }
        RetryOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new RetrySubscriber(subscriber, this.count, this.source));
        };
        return RetryOperator;
    }());
    var RetrySubscriber = (function (_super) {
        __extends(RetrySubscriber, _super);
        function RetrySubscriber(destination, count, source) {
            var _this = _super.call(this, destination) || this;
            _this.count = count;
            _this.source = source;
            return _this;
        }
        RetrySubscriber.prototype.error = function (err) {
            if (!this.isStopped) {
                var _a = this, source = _a.source, count = _a.count;
                if (count === 0) {
                    return _super.prototype.error.call(this, err);
                }
                else if (count > -1) {
                    this.count = count - 1;
                }
                source.subscribe(this._unsubscribeAndRecycle());
            }
        };
        return RetrySubscriber;
    }(Subscriber));

    function retryWhen(notifier) {
        return function (source) { return source.lift(new RetryWhenOperator(notifier, source)); };
    }
    var RetryWhenOperator = (function () {
        function RetryWhenOperator(notifier, source) {
            this.notifier = notifier;
            this.source = source;
        }
        RetryWhenOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new RetryWhenSubscriber(subscriber, this.notifier, this.source));
        };
        return RetryWhenOperator;
    }());
    var RetryWhenSubscriber = (function (_super) {
        __extends(RetryWhenSubscriber, _super);
        function RetryWhenSubscriber(destination, notifier, source) {
            var _this = _super.call(this, destination) || this;
            _this.notifier = notifier;
            _this.source = source;
            return _this;
        }
        RetryWhenSubscriber.prototype.error = function (err) {
            if (!this.isStopped) {
                var errors = this.errors;
                var retries = this.retries;
                var retriesSubscription = this.retriesSubscription;
                if (!retries) {
                    errors = new Subject();
                    try {
                        var notifier = this.notifier;
                        retries = notifier(errors);
                    }
                    catch (e) {
                        return _super.prototype.error.call(this, e);
                    }
                    retriesSubscription = innerSubscribe(retries, new SimpleInnerSubscriber(this));
                }
                else {
                    this.errors = undefined;
                    this.retriesSubscription = undefined;
                }
                this._unsubscribeAndRecycle();
                this.errors = errors;
                this.retries = retries;
                this.retriesSubscription = retriesSubscription;
                errors.next(err);
            }
        };
        RetryWhenSubscriber.prototype._unsubscribe = function () {
            var _a = this, errors = _a.errors, retriesSubscription = _a.retriesSubscription;
            if (errors) {
                errors.unsubscribe();
                this.errors = undefined;
            }
            if (retriesSubscription) {
                retriesSubscription.unsubscribe();
                this.retriesSubscription = undefined;
            }
            this.retries = undefined;
        };
        RetryWhenSubscriber.prototype.notifyNext = function () {
            var _unsubscribe = this._unsubscribe;
            this._unsubscribe = null;
            this._unsubscribeAndRecycle();
            this._unsubscribe = _unsubscribe;
            this.source.subscribe(this);
        };
        return RetryWhenSubscriber;
    }(SimpleOuterSubscriber));

    function sample(notifier) {
        return function (source) { return source.lift(new SampleOperator(notifier)); };
    }
    var SampleOperator = (function () {
        function SampleOperator(notifier) {
            this.notifier = notifier;
        }
        SampleOperator.prototype.call = function (subscriber, source) {
            var sampleSubscriber = new SampleSubscriber(subscriber);
            var subscription = source.subscribe(sampleSubscriber);
            subscription.add(innerSubscribe(this.notifier, new SimpleInnerSubscriber(sampleSubscriber)));
            return subscription;
        };
        return SampleOperator;
    }());
    var SampleSubscriber = (function (_super) {
        __extends(SampleSubscriber, _super);
        function SampleSubscriber() {
            var _this = _super !== null && _super.apply(this, arguments) || this;
            _this.hasValue = false;
            return _this;
        }
        SampleSubscriber.prototype._next = function (value) {
            this.value = value;
            this.hasValue = true;
        };
        SampleSubscriber.prototype.notifyNext = function () {
            this.emitValue();
        };
        SampleSubscriber.prototype.notifyComplete = function () {
            this.emitValue();
        };
        SampleSubscriber.prototype.emitValue = function () {
            if (this.hasValue) {
                this.hasValue = false;
                this.destination.next(this.value);
            }
        };
        return SampleSubscriber;
    }(SimpleOuterSubscriber));

    function sampleTime(period, scheduler) {
        if (scheduler === void 0) { scheduler = async; }
        return function (source) { return source.lift(new SampleTimeOperator(period, scheduler)); };
    }
    var SampleTimeOperator = (function () {
        function SampleTimeOperator(period, scheduler) {
            this.period = period;
            this.scheduler = scheduler;
        }
        SampleTimeOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new SampleTimeSubscriber(subscriber, this.period, this.scheduler));
        };
        return SampleTimeOperator;
    }());
    var SampleTimeSubscriber = (function (_super) {
        __extends(SampleTimeSubscriber, _super);
        function SampleTimeSubscriber(destination, period, scheduler) {
            var _this = _super.call(this, destination) || this;
            _this.period = period;
            _this.scheduler = scheduler;
            _this.hasValue = false;
            _this.add(scheduler.schedule(dispatchNotification, period, { subscriber: _this, period: period }));
            return _this;
        }
        SampleTimeSubscriber.prototype._next = function (value) {
            this.lastValue = value;
            this.hasValue = true;
        };
        SampleTimeSubscriber.prototype.notifyNext = function () {
            if (this.hasValue) {
                this.hasValue = false;
                this.destination.next(this.lastValue);
            }
        };
        return SampleTimeSubscriber;
    }(Subscriber));
    function dispatchNotification(state) {
        var subscriber = state.subscriber, period = state.period;
        subscriber.notifyNext();
        this.schedule(state, period);
    }

    function sequenceEqual(compareTo, comparator) {
        return function (source) { return source.lift(new SequenceEqualOperator(compareTo, comparator)); };
    }
    var SequenceEqualOperator = (function () {
        function SequenceEqualOperator(compareTo, comparator) {
            this.compareTo = compareTo;
            this.comparator = comparator;
        }
        SequenceEqualOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new SequenceEqualSubscriber(subscriber, this.compareTo, this.comparator));
        };
        return SequenceEqualOperator;
    }());
    var SequenceEqualSubscriber = (function (_super) {
        __extends(SequenceEqualSubscriber, _super);
        function SequenceEqualSubscriber(destination, compareTo, comparator) {
            var _this = _super.call(this, destination) || this;
            _this.compareTo = compareTo;
            _this.comparator = comparator;
            _this._a = [];
            _this._b = [];
            _this._oneComplete = false;
            _this.destination.add(compareTo.subscribe(new SequenceEqualCompareToSubscriber(destination, _this)));
            return _this;
        }
        SequenceEqualSubscriber.prototype._next = function (value) {
            if (this._oneComplete && this._b.length === 0) {
                this.emit(false);
            }
            else {
                this._a.push(value);
                this.checkValues();
            }
        };
        SequenceEqualSubscriber.prototype._complete = function () {
            if (this._oneComplete) {
                this.emit(this._a.length === 0 && this._b.length === 0);
            }
            else {
                this._oneComplete = true;
            }
            this.unsubscribe();
        };
        SequenceEqualSubscriber.prototype.checkValues = function () {
            var _c = this, _a = _c._a, _b = _c._b, comparator = _c.comparator;
            while (_a.length > 0 && _b.length > 0) {
                var a = _a.shift();
                var b = _b.shift();
                var areEqual = false;
                try {
                    areEqual = comparator ? comparator(a, b) : a === b;
                }
                catch (e) {
                    this.destination.error(e);
                }
                if (!areEqual) {
                    this.emit(false);
                }
            }
        };
        SequenceEqualSubscriber.prototype.emit = function (value) {
            var destination = this.destination;
            destination.next(value);
            destination.complete();
        };
        SequenceEqualSubscriber.prototype.nextB = function (value) {
            if (this._oneComplete && this._a.length === 0) {
                this.emit(false);
            }
            else {
                this._b.push(value);
                this.checkValues();
            }
        };
        SequenceEqualSubscriber.prototype.completeB = function () {
            if (this._oneComplete) {
                this.emit(this._a.length === 0 && this._b.length === 0);
            }
            else {
                this._oneComplete = true;
            }
        };
        return SequenceEqualSubscriber;
    }(Subscriber));
    var SequenceEqualCompareToSubscriber = (function (_super) {
        __extends(SequenceEqualCompareToSubscriber, _super);
        function SequenceEqualCompareToSubscriber(destination, parent) {
            var _this = _super.call(this, destination) || this;
            _this.parent = parent;
            return _this;
        }
        SequenceEqualCompareToSubscriber.prototype._next = function (value) {
            this.parent.nextB(value);
        };
        SequenceEqualCompareToSubscriber.prototype._error = function (err) {
            this.parent.error(err);
            this.unsubscribe();
        };
        SequenceEqualCompareToSubscriber.prototype._complete = function () {
            this.parent.completeB();
            this.unsubscribe();
        };
        return SequenceEqualCompareToSubscriber;
    }(Subscriber));

    function shareSubjectFactory() {
        return new Subject();
    }
    function share() {
        return function (source) { return refCount()(multicast(shareSubjectFactory)(source)); };
    }

    function shareReplay(configOrBufferSize, windowTime, scheduler) {
        var config;
        if (configOrBufferSize && typeof configOrBufferSize === 'object') {
            config = configOrBufferSize;
        }
        else {
            config = {
                bufferSize: configOrBufferSize,
                windowTime: windowTime,
                refCount: false,
                scheduler: scheduler,
            };
        }
        return function (source) { return source.lift(shareReplayOperator(config)); };
    }
    function shareReplayOperator(_a) {
        var _b = _a.bufferSize, bufferSize = _b === void 0 ? Number.POSITIVE_INFINITY : _b, _c = _a.windowTime, windowTime = _c === void 0 ? Number.POSITIVE_INFINITY : _c, useRefCount = _a.refCount, scheduler = _a.scheduler;
        var subject;
        var refCount = 0;
        var subscription;
        var hasError = false;
        var isComplete = false;
        return function shareReplayOperation(source) {
            refCount++;
            var innerSub;
            if (!subject || hasError) {
                hasError = false;
                subject = new ReplaySubject(bufferSize, windowTime, scheduler);
                innerSub = subject.subscribe(this);
                subscription = source.subscribe({
                    next: function (value) {
                        subject.next(value);
                    },
                    error: function (err) {
                        hasError = true;
                        subject.error(err);
                    },
                    complete: function () {
                        isComplete = true;
                        subscription = undefined;
                        subject.complete();
                    },
                });
                if (isComplete) {
                    subscription = undefined;
                }
            }
            else {
                innerSub = subject.subscribe(this);
            }
            this.add(function () {
                refCount--;
                innerSub.unsubscribe();
                innerSub = undefined;
                if (subscription && !isComplete && useRefCount && refCount === 0) {
                    subscription.unsubscribe();
                    subscription = undefined;
                    subject = undefined;
                }
            });
        };
    }

    function single(predicate) {
        return function (source) { return source.lift(new SingleOperator(predicate, source)); };
    }
    var SingleOperator = (function () {
        function SingleOperator(predicate, source) {
            this.predicate = predicate;
            this.source = source;
        }
        SingleOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new SingleSubscriber(subscriber, this.predicate, this.source));
        };
        return SingleOperator;
    }());
    var SingleSubscriber = (function (_super) {
        __extends(SingleSubscriber, _super);
        function SingleSubscriber(destination, predicate, source) {
            var _this = _super.call(this, destination) || this;
            _this.predicate = predicate;
            _this.source = source;
            _this.seenValue = false;
            _this.index = 0;
            return _this;
        }
        SingleSubscriber.prototype.applySingleValue = function (value) {
            if (this.seenValue) {
                this.destination.error('Sequence contains more than one element');
            }
            else {
                this.seenValue = true;
                this.singleValue = value;
            }
        };
        SingleSubscriber.prototype._next = function (value) {
            var index = this.index++;
            if (this.predicate) {
                this.tryNext(value, index);
            }
            else {
                this.applySingleValue(value);
            }
        };
        SingleSubscriber.prototype.tryNext = function (value, index) {
            try {
                if (this.predicate(value, index, this.source)) {
                    this.applySingleValue(value);
                }
            }
            catch (err) {
                this.destination.error(err);
            }
        };
        SingleSubscriber.prototype._complete = function () {
            var destination = this.destination;
            if (this.index > 0) {
                destination.next(this.seenValue ? this.singleValue : undefined);
                destination.complete();
            }
            else {
                destination.error(new EmptyError);
            }
        };
        return SingleSubscriber;
    }(Subscriber));

    function skip(count) {
        return function (source) { return source.lift(new SkipOperator(count)); };
    }
    var SkipOperator = (function () {
        function SkipOperator(total) {
            this.total = total;
        }
        SkipOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new SkipSubscriber(subscriber, this.total));
        };
        return SkipOperator;
    }());
    var SkipSubscriber = (function (_super) {
        __extends(SkipSubscriber, _super);
        function SkipSubscriber(destination, total) {
            var _this = _super.call(this, destination) || this;
            _this.total = total;
            _this.count = 0;
            return _this;
        }
        SkipSubscriber.prototype._next = function (x) {
            if (++this.count > this.total) {
                this.destination.next(x);
            }
        };
        return SkipSubscriber;
    }(Subscriber));

    function skipLast(count) {
        return function (source) { return source.lift(new SkipLastOperator(count)); };
    }
    var SkipLastOperator = (function () {
        function SkipLastOperator(_skipCount) {
            this._skipCount = _skipCount;
            if (this._skipCount < 0) {
                throw new ArgumentOutOfRangeError;
            }
        }
        SkipLastOperator.prototype.call = function (subscriber, source) {
            if (this._skipCount === 0) {
                return source.subscribe(new Subscriber(subscriber));
            }
            else {
                return source.subscribe(new SkipLastSubscriber(subscriber, this._skipCount));
            }
        };
        return SkipLastOperator;
    }());
    var SkipLastSubscriber = (function (_super) {
        __extends(SkipLastSubscriber, _super);
        function SkipLastSubscriber(destination, _skipCount) {
            var _this = _super.call(this, destination) || this;
            _this._skipCount = _skipCount;
            _this._count = 0;
            _this._ring = new Array(_skipCount);
            return _this;
        }
        SkipLastSubscriber.prototype._next = function (value) {
            var skipCount = this._skipCount;
            var count = this._count++;
            if (count < skipCount) {
                this._ring[count] = value;
            }
            else {
                var currentIndex = count % skipCount;
                var ring = this._ring;
                var oldValue = ring[currentIndex];
                ring[currentIndex] = value;
                this.destination.next(oldValue);
            }
        };
        return SkipLastSubscriber;
    }(Subscriber));

    function skipUntil(notifier) {
        return function (source) { return source.lift(new SkipUntilOperator(notifier)); };
    }
    var SkipUntilOperator = (function () {
        function SkipUntilOperator(notifier) {
            this.notifier = notifier;
        }
        SkipUntilOperator.prototype.call = function (destination, source) {
            return source.subscribe(new SkipUntilSubscriber(destination, this.notifier));
        };
        return SkipUntilOperator;
    }());
    var SkipUntilSubscriber = (function (_super) {
        __extends(SkipUntilSubscriber, _super);
        function SkipUntilSubscriber(destination, notifier) {
            var _this = _super.call(this, destination) || this;
            _this.hasValue = false;
            var innerSubscriber = new SimpleInnerSubscriber(_this);
            _this.add(innerSubscriber);
            _this.innerSubscription = innerSubscriber;
            var innerSubscription = innerSubscribe(notifier, innerSubscriber);
            if (innerSubscription !== innerSubscriber) {
                _this.add(innerSubscription);
                _this.innerSubscription = innerSubscription;
            }
            return _this;
        }
        SkipUntilSubscriber.prototype._next = function (value) {
            if (this.hasValue) {
                _super.prototype._next.call(this, value);
            }
        };
        SkipUntilSubscriber.prototype.notifyNext = function () {
            this.hasValue = true;
            if (this.innerSubscription) {
                this.innerSubscription.unsubscribe();
            }
        };
        SkipUntilSubscriber.prototype.notifyComplete = function () {
        };
        return SkipUntilSubscriber;
    }(SimpleOuterSubscriber));

    function skipWhile(predicate) {
        return function (source) { return source.lift(new SkipWhileOperator(predicate)); };
    }
    var SkipWhileOperator = (function () {
        function SkipWhileOperator(predicate) {
            this.predicate = predicate;
        }
        SkipWhileOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new SkipWhileSubscriber(subscriber, this.predicate));
        };
        return SkipWhileOperator;
    }());
    var SkipWhileSubscriber = (function (_super) {
        __extends(SkipWhileSubscriber, _super);
        function SkipWhileSubscriber(destination, predicate) {
            var _this = _super.call(this, destination) || this;
            _this.predicate = predicate;
            _this.skipping = true;
            _this.index = 0;
            return _this;
        }
        SkipWhileSubscriber.prototype._next = function (value) {
            var destination = this.destination;
            if (this.skipping) {
                this.tryCallPredicate(value);
            }
            if (!this.skipping) {
                destination.next(value);
            }
        };
        SkipWhileSubscriber.prototype.tryCallPredicate = function (value) {
            try {
                var result = this.predicate(value, this.index++);
                this.skipping = Boolean(result);
            }
            catch (err) {
                this.destination.error(err);
            }
        };
        return SkipWhileSubscriber;
    }(Subscriber));

    function startWith() {
        var array = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            array[_i] = arguments[_i];
        }
        var scheduler = array[array.length - 1];
        if (isScheduler(scheduler)) {
            array.pop();
            return function (source) { return concat(array, source, scheduler); };
        }
        else {
            return function (source) { return concat(array, source); };
        }
    }

    var SubscribeOnObservable = (function (_super) {
        __extends(SubscribeOnObservable, _super);
        function SubscribeOnObservable(source, delayTime, scheduler) {
            if (delayTime === void 0) { delayTime = 0; }
            if (scheduler === void 0) { scheduler = asap; }
            var _this = _super.call(this) || this;
            _this.source = source;
            _this.delayTime = delayTime;
            _this.scheduler = scheduler;
            if (!isNumeric(delayTime) || delayTime < 0) {
                _this.delayTime = 0;
            }
            if (!scheduler || typeof scheduler.schedule !== 'function') {
                _this.scheduler = asap;
            }
            return _this;
        }
        SubscribeOnObservable.create = function (source, delay, scheduler) {
            if (delay === void 0) { delay = 0; }
            if (scheduler === void 0) { scheduler = asap; }
            return new SubscribeOnObservable(source, delay, scheduler);
        };
        SubscribeOnObservable.dispatch = function (arg) {
            var source = arg.source, subscriber = arg.subscriber;
            return this.add(source.subscribe(subscriber));
        };
        SubscribeOnObservable.prototype._subscribe = function (subscriber) {
            var delay = this.delayTime;
            var source = this.source;
            var scheduler = this.scheduler;
            return scheduler.schedule(SubscribeOnObservable.dispatch, delay, {
                source: source, subscriber: subscriber
            });
        };
        return SubscribeOnObservable;
    }(Observable));

    function subscribeOn(scheduler, delay) {
        if (delay === void 0) { delay = 0; }
        return function subscribeOnOperatorFunction(source) {
            return source.lift(new SubscribeOnOperator(scheduler, delay));
        };
    }
    var SubscribeOnOperator = (function () {
        function SubscribeOnOperator(scheduler, delay) {
            this.scheduler = scheduler;
            this.delay = delay;
        }
        SubscribeOnOperator.prototype.call = function (subscriber, source) {
            return new SubscribeOnObservable(source, this.delay, this.scheduler).subscribe(subscriber);
        };
        return SubscribeOnOperator;
    }());

    function switchMap(project, resultSelector) {
        if (typeof resultSelector === 'function') {
            return function (source) { return source.pipe(switchMap(function (a, i) { return from(project(a, i)).pipe(map(function (b, ii) { return resultSelector(a, b, i, ii); })); })); };
        }
        return function (source) { return source.lift(new SwitchMapOperator(project)); };
    }
    var SwitchMapOperator = (function () {
        function SwitchMapOperator(project) {
            this.project = project;
        }
        SwitchMapOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new SwitchMapSubscriber(subscriber, this.project));
        };
        return SwitchMapOperator;
    }());
    var SwitchMapSubscriber = (function (_super) {
        __extends(SwitchMapSubscriber, _super);
        function SwitchMapSubscriber(destination, project) {
            var _this = _super.call(this, destination) || this;
            _this.project = project;
            _this.index = 0;
            return _this;
        }
        SwitchMapSubscriber.prototype._next = function (value) {
            var result;
            var index = this.index++;
            try {
                result = this.project(value, index);
            }
            catch (error) {
                this.destination.error(error);
                return;
            }
            this._innerSub(result);
        };
        SwitchMapSubscriber.prototype._innerSub = function (result) {
            var innerSubscription = this.innerSubscription;
            if (innerSubscription) {
                innerSubscription.unsubscribe();
            }
            var innerSubscriber = new SimpleInnerSubscriber(this);
            var destination = this.destination;
            destination.add(innerSubscriber);
            this.innerSubscription = innerSubscribe(result, innerSubscriber);
            if (this.innerSubscription !== innerSubscriber) {
                destination.add(this.innerSubscription);
            }
        };
        SwitchMapSubscriber.prototype._complete = function () {
            var innerSubscription = this.innerSubscription;
            if (!innerSubscription || innerSubscription.closed) {
                _super.prototype._complete.call(this);
            }
            this.unsubscribe();
        };
        SwitchMapSubscriber.prototype._unsubscribe = function () {
            this.innerSubscription = undefined;
        };
        SwitchMapSubscriber.prototype.notifyComplete = function () {
            this.innerSubscription = undefined;
            if (this.isStopped) {
                _super.prototype._complete.call(this);
            }
        };
        SwitchMapSubscriber.prototype.notifyNext = function (innerValue) {
            this.destination.next(innerValue);
        };
        return SwitchMapSubscriber;
    }(SimpleOuterSubscriber));

    function switchAll() {
        return switchMap(identity);
    }

    function switchMapTo(innerObservable, resultSelector) {
        return resultSelector ? switchMap(function () { return innerObservable; }, resultSelector) : switchMap(function () { return innerObservable; });
    }

    function takeUntil(notifier) {
        return function (source) { return source.lift(new TakeUntilOperator(notifier)); };
    }
    var TakeUntilOperator = (function () {
        function TakeUntilOperator(notifier) {
            this.notifier = notifier;
        }
        TakeUntilOperator.prototype.call = function (subscriber, source) {
            var takeUntilSubscriber = new TakeUntilSubscriber(subscriber);
            var notifierSubscription = innerSubscribe(this.notifier, new SimpleInnerSubscriber(takeUntilSubscriber));
            if (notifierSubscription && !takeUntilSubscriber.seenValue) {
                takeUntilSubscriber.add(notifierSubscription);
                return source.subscribe(takeUntilSubscriber);
            }
            return takeUntilSubscriber;
        };
        return TakeUntilOperator;
    }());
    var TakeUntilSubscriber = (function (_super) {
        __extends(TakeUntilSubscriber, _super);
        function TakeUntilSubscriber(destination) {
            var _this = _super.call(this, destination) || this;
            _this.seenValue = false;
            return _this;
        }
        TakeUntilSubscriber.prototype.notifyNext = function () {
            this.seenValue = true;
            this.complete();
        };
        TakeUntilSubscriber.prototype.notifyComplete = function () {
        };
        return TakeUntilSubscriber;
    }(SimpleOuterSubscriber));

    function takeWhile(predicate, inclusive) {
        if (inclusive === void 0) { inclusive = false; }
        return function (source) {
            return source.lift(new TakeWhileOperator(predicate, inclusive));
        };
    }
    var TakeWhileOperator = (function () {
        function TakeWhileOperator(predicate, inclusive) {
            this.predicate = predicate;
            this.inclusive = inclusive;
        }
        TakeWhileOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new TakeWhileSubscriber(subscriber, this.predicate, this.inclusive));
        };
        return TakeWhileOperator;
    }());
    var TakeWhileSubscriber = (function (_super) {
        __extends(TakeWhileSubscriber, _super);
        function TakeWhileSubscriber(destination, predicate, inclusive) {
            var _this = _super.call(this, destination) || this;
            _this.predicate = predicate;
            _this.inclusive = inclusive;
            _this.index = 0;
            return _this;
        }
        TakeWhileSubscriber.prototype._next = function (value) {
            var destination = this.destination;
            var result;
            try {
                result = this.predicate(value, this.index++);
            }
            catch (err) {
                destination.error(err);
                return;
            }
            this.nextOrComplete(value, result);
        };
        TakeWhileSubscriber.prototype.nextOrComplete = function (value, predicateResult) {
            var destination = this.destination;
            if (Boolean(predicateResult)) {
                destination.next(value);
            }
            else {
                if (this.inclusive) {
                    destination.next(value);
                }
                destination.complete();
            }
        };
        return TakeWhileSubscriber;
    }(Subscriber));

    function tap(nextOrObserver, error, complete) {
        return function tapOperatorFunction(source) {
            return source.lift(new DoOperator(nextOrObserver, error, complete));
        };
    }
    var DoOperator = (function () {
        function DoOperator(nextOrObserver, error, complete) {
            this.nextOrObserver = nextOrObserver;
            this.error = error;
            this.complete = complete;
        }
        DoOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new TapSubscriber(subscriber, this.nextOrObserver, this.error, this.complete));
        };
        return DoOperator;
    }());
    var TapSubscriber = (function (_super) {
        __extends(TapSubscriber, _super);
        function TapSubscriber(destination, observerOrNext, error, complete) {
            var _this = _super.call(this, destination) || this;
            _this._tapNext = noop;
            _this._tapError = noop;
            _this._tapComplete = noop;
            _this._tapError = error || noop;
            _this._tapComplete = complete || noop;
            if (isFunction(observerOrNext)) {
                _this._context = _this;
                _this._tapNext = observerOrNext;
            }
            else if (observerOrNext) {
                _this._context = observerOrNext;
                _this._tapNext = observerOrNext.next || noop;
                _this._tapError = observerOrNext.error || noop;
                _this._tapComplete = observerOrNext.complete || noop;
            }
            return _this;
        }
        TapSubscriber.prototype._next = function (value) {
            try {
                this._tapNext.call(this._context, value);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            this.destination.next(value);
        };
        TapSubscriber.prototype._error = function (err) {
            try {
                this._tapError.call(this._context, err);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            this.destination.error(err);
        };
        TapSubscriber.prototype._complete = function () {
            try {
                this._tapComplete.call(this._context);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            return this.destination.complete();
        };
        return TapSubscriber;
    }(Subscriber));

    var defaultThrottleConfig = {
        leading: true,
        trailing: false
    };
    function throttle(durationSelector, config) {
        if (config === void 0) { config = defaultThrottleConfig; }
        return function (source) { return source.lift(new ThrottleOperator(durationSelector, !!config.leading, !!config.trailing)); };
    }
    var ThrottleOperator = (function () {
        function ThrottleOperator(durationSelector, leading, trailing) {
            this.durationSelector = durationSelector;
            this.leading = leading;
            this.trailing = trailing;
        }
        ThrottleOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new ThrottleSubscriber(subscriber, this.durationSelector, this.leading, this.trailing));
        };
        return ThrottleOperator;
    }());
    var ThrottleSubscriber = (function (_super) {
        __extends(ThrottleSubscriber, _super);
        function ThrottleSubscriber(destination, durationSelector, _leading, _trailing) {
            var _this = _super.call(this, destination) || this;
            _this.destination = destination;
            _this.durationSelector = durationSelector;
            _this._leading = _leading;
            _this._trailing = _trailing;
            _this._hasValue = false;
            return _this;
        }
        ThrottleSubscriber.prototype._next = function (value) {
            this._hasValue = true;
            this._sendValue = value;
            if (!this._throttled) {
                if (this._leading) {
                    this.send();
                }
                else {
                    this.throttle(value);
                }
            }
        };
        ThrottleSubscriber.prototype.send = function () {
            var _a = this, _hasValue = _a._hasValue, _sendValue = _a._sendValue;
            if (_hasValue) {
                this.destination.next(_sendValue);
                this.throttle(_sendValue);
            }
            this._hasValue = false;
            this._sendValue = undefined;
        };
        ThrottleSubscriber.prototype.throttle = function (value) {
            var duration = this.tryDurationSelector(value);
            if (!!duration) {
                this.add(this._throttled = innerSubscribe(duration, new SimpleInnerSubscriber(this)));
            }
        };
        ThrottleSubscriber.prototype.tryDurationSelector = function (value) {
            try {
                return this.durationSelector(value);
            }
            catch (err) {
                this.destination.error(err);
                return null;
            }
        };
        ThrottleSubscriber.prototype.throttlingDone = function () {
            var _a = this, _throttled = _a._throttled, _trailing = _a._trailing;
            if (_throttled) {
                _throttled.unsubscribe();
            }
            this._throttled = undefined;
            if (_trailing) {
                this.send();
            }
        };
        ThrottleSubscriber.prototype.notifyNext = function () {
            this.throttlingDone();
        };
        ThrottleSubscriber.prototype.notifyComplete = function () {
            this.throttlingDone();
        };
        return ThrottleSubscriber;
    }(SimpleOuterSubscriber));

    function throttleTime(duration, scheduler, config) {
        if (scheduler === void 0) { scheduler = async; }
        if (config === void 0) { config = defaultThrottleConfig; }
        return function (source) { return source.lift(new ThrottleTimeOperator(duration, scheduler, config.leading, config.trailing)); };
    }
    var ThrottleTimeOperator = (function () {
        function ThrottleTimeOperator(duration, scheduler, leading, trailing) {
            this.duration = duration;
            this.scheduler = scheduler;
            this.leading = leading;
            this.trailing = trailing;
        }
        ThrottleTimeOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new ThrottleTimeSubscriber(subscriber, this.duration, this.scheduler, this.leading, this.trailing));
        };
        return ThrottleTimeOperator;
    }());
    var ThrottleTimeSubscriber = (function (_super) {
        __extends(ThrottleTimeSubscriber, _super);
        function ThrottleTimeSubscriber(destination, duration, scheduler, leading, trailing) {
            var _this = _super.call(this, destination) || this;
            _this.duration = duration;
            _this.scheduler = scheduler;
            _this.leading = leading;
            _this.trailing = trailing;
            _this._hasTrailingValue = false;
            _this._trailingValue = null;
            return _this;
        }
        ThrottleTimeSubscriber.prototype._next = function (value) {
            if (this.throttled) {
                if (this.trailing) {
                    this._trailingValue = value;
                    this._hasTrailingValue = true;
                }
            }
            else {
                this.add(this.throttled = this.scheduler.schedule(dispatchNext$3, this.duration, { subscriber: this }));
                if (this.leading) {
                    this.destination.next(value);
                }
                else if (this.trailing) {
                    this._trailingValue = value;
                    this._hasTrailingValue = true;
                }
            }
        };
        ThrottleTimeSubscriber.prototype._complete = function () {
            if (this._hasTrailingValue) {
                this.destination.next(this._trailingValue);
                this.destination.complete();
            }
            else {
                this.destination.complete();
            }
        };
        ThrottleTimeSubscriber.prototype.clearThrottle = function () {
            var throttled = this.throttled;
            if (throttled) {
                if (this.trailing && this._hasTrailingValue) {
                    this.destination.next(this._trailingValue);
                    this._trailingValue = null;
                    this._hasTrailingValue = false;
                }
                throttled.unsubscribe();
                this.remove(throttled);
                this.throttled = null;
            }
        };
        return ThrottleTimeSubscriber;
    }(Subscriber));
    function dispatchNext$3(arg) {
        var subscriber = arg.subscriber;
        subscriber.clearThrottle();
    }

    function timeInterval(scheduler) {
        if (scheduler === void 0) { scheduler = async; }
        return function (source) { return defer(function () {
            return source.pipe(scan(function (_a, value) {
                var current = _a.current;
                return ({ value: value, current: scheduler.now(), last: current });
            }, { current: scheduler.now(), value: undefined, last: undefined }), map(function (_a) {
                var current = _a.current, last = _a.last, value = _a.value;
                return new TimeInterval(value, current - last);
            }));
        }); };
    }
    var TimeInterval = (function () {
        function TimeInterval(value, interval) {
            this.value = value;
            this.interval = interval;
        }
        return TimeInterval;
    }());

    function timeoutWith(due, withObservable, scheduler) {
        if (scheduler === void 0) { scheduler = async; }
        return function (source) {
            var absoluteTimeout = isDate(due);
            var waitFor = absoluteTimeout ? (+due - scheduler.now()) : Math.abs(due);
            return source.lift(new TimeoutWithOperator(waitFor, absoluteTimeout, withObservable, scheduler));
        };
    }
    var TimeoutWithOperator = (function () {
        function TimeoutWithOperator(waitFor, absoluteTimeout, withObservable, scheduler) {
            this.waitFor = waitFor;
            this.absoluteTimeout = absoluteTimeout;
            this.withObservable = withObservable;
            this.scheduler = scheduler;
        }
        TimeoutWithOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new TimeoutWithSubscriber(subscriber, this.absoluteTimeout, this.waitFor, this.withObservable, this.scheduler));
        };
        return TimeoutWithOperator;
    }());
    var TimeoutWithSubscriber = (function (_super) {
        __extends(TimeoutWithSubscriber, _super);
        function TimeoutWithSubscriber(destination, absoluteTimeout, waitFor, withObservable, scheduler) {
            var _this = _super.call(this, destination) || this;
            _this.absoluteTimeout = absoluteTimeout;
            _this.waitFor = waitFor;
            _this.withObservable = withObservable;
            _this.scheduler = scheduler;
            _this.scheduleTimeout();
            return _this;
        }
        TimeoutWithSubscriber.dispatchTimeout = function (subscriber) {
            var withObservable = subscriber.withObservable;
            subscriber._unsubscribeAndRecycle();
            subscriber.add(innerSubscribe(withObservable, new SimpleInnerSubscriber(subscriber)));
        };
        TimeoutWithSubscriber.prototype.scheduleTimeout = function () {
            var action = this.action;
            if (action) {
                this.action = action.schedule(this, this.waitFor);
            }
            else {
                this.add(this.action = this.scheduler.schedule(TimeoutWithSubscriber.dispatchTimeout, this.waitFor, this));
            }
        };
        TimeoutWithSubscriber.prototype._next = function (value) {
            if (!this.absoluteTimeout) {
                this.scheduleTimeout();
            }
            _super.prototype._next.call(this, value);
        };
        TimeoutWithSubscriber.prototype._unsubscribe = function () {
            this.action = undefined;
            this.scheduler = null;
            this.withObservable = null;
        };
        return TimeoutWithSubscriber;
    }(SimpleOuterSubscriber));

    function timeout(due, scheduler) {
        if (scheduler === void 0) { scheduler = async; }
        return timeoutWith(due, throwError(new TimeoutError()), scheduler);
    }

    function timestamp(scheduler) {
        if (scheduler === void 0) { scheduler = async; }
        return map(function (value) { return new Timestamp(value, scheduler.now()); });
    }
    var Timestamp = (function () {
        function Timestamp(value, timestamp) {
            this.value = value;
            this.timestamp = timestamp;
        }
        return Timestamp;
    }());

    function toArrayReducer(arr, item, index) {
        if (index === 0) {
            return [item];
        }
        arr.push(item);
        return arr;
    }
    function toArray() {
        return reduce(toArrayReducer, []);
    }

    function window$1(windowBoundaries) {
        return function windowOperatorFunction(source) {
            return source.lift(new WindowOperator(windowBoundaries));
        };
    }
    var WindowOperator = (function () {
        function WindowOperator(windowBoundaries) {
            this.windowBoundaries = windowBoundaries;
        }
        WindowOperator.prototype.call = function (subscriber, source) {
            var windowSubscriber = new WindowSubscriber(subscriber);
            var sourceSubscription = source.subscribe(windowSubscriber);
            if (!sourceSubscription.closed) {
                windowSubscriber.add(innerSubscribe(this.windowBoundaries, new SimpleInnerSubscriber(windowSubscriber)));
            }
            return sourceSubscription;
        };
        return WindowOperator;
    }());
    var WindowSubscriber = (function (_super) {
        __extends(WindowSubscriber, _super);
        function WindowSubscriber(destination) {
            var _this = _super.call(this, destination) || this;
            _this.window = new Subject();
            destination.next(_this.window);
            return _this;
        }
        WindowSubscriber.prototype.notifyNext = function () {
            this.openWindow();
        };
        WindowSubscriber.prototype.notifyError = function (error) {
            this._error(error);
        };
        WindowSubscriber.prototype.notifyComplete = function () {
            this._complete();
        };
        WindowSubscriber.prototype._next = function (value) {
            this.window.next(value);
        };
        WindowSubscriber.prototype._error = function (err) {
            this.window.error(err);
            this.destination.error(err);
        };
        WindowSubscriber.prototype._complete = function () {
            this.window.complete();
            this.destination.complete();
        };
        WindowSubscriber.prototype._unsubscribe = function () {
            this.window = null;
        };
        WindowSubscriber.prototype.openWindow = function () {
            var prevWindow = this.window;
            if (prevWindow) {
                prevWindow.complete();
            }
            var destination = this.destination;
            var newWindow = this.window = new Subject();
            destination.next(newWindow);
        };
        return WindowSubscriber;
    }(SimpleOuterSubscriber));

    function windowCount(windowSize, startWindowEvery) {
        if (startWindowEvery === void 0) { startWindowEvery = 0; }
        return function windowCountOperatorFunction(source) {
            return source.lift(new WindowCountOperator(windowSize, startWindowEvery));
        };
    }
    var WindowCountOperator = (function () {
        function WindowCountOperator(windowSize, startWindowEvery) {
            this.windowSize = windowSize;
            this.startWindowEvery = startWindowEvery;
        }
        WindowCountOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new WindowCountSubscriber(subscriber, this.windowSize, this.startWindowEvery));
        };
        return WindowCountOperator;
    }());
    var WindowCountSubscriber = (function (_super) {
        __extends(WindowCountSubscriber, _super);
        function WindowCountSubscriber(destination, windowSize, startWindowEvery) {
            var _this = _super.call(this, destination) || this;
            _this.destination = destination;
            _this.windowSize = windowSize;
            _this.startWindowEvery = startWindowEvery;
            _this.windows = [new Subject()];
            _this.count = 0;
            destination.next(_this.windows[0]);
            return _this;
        }
        WindowCountSubscriber.prototype._next = function (value) {
            var startWindowEvery = (this.startWindowEvery > 0) ? this.startWindowEvery : this.windowSize;
            var destination = this.destination;
            var windowSize = this.windowSize;
            var windows = this.windows;
            var len = windows.length;
            for (var i = 0; i < len && !this.closed; i++) {
                windows[i].next(value);
            }
            var c = this.count - windowSize + 1;
            if (c >= 0 && c % startWindowEvery === 0 && !this.closed) {
                windows.shift().complete();
            }
            if (++this.count % startWindowEvery === 0 && !this.closed) {
                var window_1 = new Subject();
                windows.push(window_1);
                destination.next(window_1);
            }
        };
        WindowCountSubscriber.prototype._error = function (err) {
            var windows = this.windows;
            if (windows) {
                while (windows.length > 0 && !this.closed) {
                    windows.shift().error(err);
                }
            }
            this.destination.error(err);
        };
        WindowCountSubscriber.prototype._complete = function () {
            var windows = this.windows;
            if (windows) {
                while (windows.length > 0 && !this.closed) {
                    windows.shift().complete();
                }
            }
            this.destination.complete();
        };
        WindowCountSubscriber.prototype._unsubscribe = function () {
            this.count = 0;
            this.windows = null;
        };
        return WindowCountSubscriber;
    }(Subscriber));

    function windowTime(windowTimeSpan) {
        var scheduler = async;
        var windowCreationInterval = null;
        var maxWindowSize = Number.POSITIVE_INFINITY;
        if (isScheduler(arguments[3])) {
            scheduler = arguments[3];
        }
        if (isScheduler(arguments[2])) {
            scheduler = arguments[2];
        }
        else if (isNumeric(arguments[2])) {
            maxWindowSize = Number(arguments[2]);
        }
        if (isScheduler(arguments[1])) {
            scheduler = arguments[1];
        }
        else if (isNumeric(arguments[1])) {
            windowCreationInterval = Number(arguments[1]);
        }
        return function windowTimeOperatorFunction(source) {
            return source.lift(new WindowTimeOperator(windowTimeSpan, windowCreationInterval, maxWindowSize, scheduler));
        };
    }
    var WindowTimeOperator = (function () {
        function WindowTimeOperator(windowTimeSpan, windowCreationInterval, maxWindowSize, scheduler) {
            this.windowTimeSpan = windowTimeSpan;
            this.windowCreationInterval = windowCreationInterval;
            this.maxWindowSize = maxWindowSize;
            this.scheduler = scheduler;
        }
        WindowTimeOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new WindowTimeSubscriber(subscriber, this.windowTimeSpan, this.windowCreationInterval, this.maxWindowSize, this.scheduler));
        };
        return WindowTimeOperator;
    }());
    var CountedSubject = (function (_super) {
        __extends(CountedSubject, _super);
        function CountedSubject() {
            var _this = _super !== null && _super.apply(this, arguments) || this;
            _this._numberOfNextedValues = 0;
            return _this;
        }
        CountedSubject.prototype.next = function (value) {
            this._numberOfNextedValues++;
            _super.prototype.next.call(this, value);
        };
        Object.defineProperty(CountedSubject.prototype, "numberOfNextedValues", {
            get: function () {
                return this._numberOfNextedValues;
            },
            enumerable: true,
            configurable: true
        });
        return CountedSubject;
    }(Subject));
    var WindowTimeSubscriber = (function (_super) {
        __extends(WindowTimeSubscriber, _super);
        function WindowTimeSubscriber(destination, windowTimeSpan, windowCreationInterval, maxWindowSize, scheduler) {
            var _this = _super.call(this, destination) || this;
            _this.destination = destination;
            _this.windowTimeSpan = windowTimeSpan;
            _this.windowCreationInterval = windowCreationInterval;
            _this.maxWindowSize = maxWindowSize;
            _this.scheduler = scheduler;
            _this.windows = [];
            var window = _this.openWindow();
            if (windowCreationInterval !== null && windowCreationInterval >= 0) {
                var closeState = { subscriber: _this, window: window, context: null };
                var creationState = { windowTimeSpan: windowTimeSpan, windowCreationInterval: windowCreationInterval, subscriber: _this, scheduler: scheduler };
                _this.add(scheduler.schedule(dispatchWindowClose, windowTimeSpan, closeState));
                _this.add(scheduler.schedule(dispatchWindowCreation, windowCreationInterval, creationState));
            }
            else {
                var timeSpanOnlyState = { subscriber: _this, window: window, windowTimeSpan: windowTimeSpan };
                _this.add(scheduler.schedule(dispatchWindowTimeSpanOnly, windowTimeSpan, timeSpanOnlyState));
            }
            return _this;
        }
        WindowTimeSubscriber.prototype._next = function (value) {
            var windows = this.windows;
            var len = windows.length;
            for (var i = 0; i < len; i++) {
                var window_1 = windows[i];
                if (!window_1.closed) {
                    window_1.next(value);
                    if (window_1.numberOfNextedValues >= this.maxWindowSize) {
                        this.closeWindow(window_1);
                    }
                }
            }
        };
        WindowTimeSubscriber.prototype._error = function (err) {
            var windows = this.windows;
            while (windows.length > 0) {
                windows.shift().error(err);
            }
            this.destination.error(err);
        };
        WindowTimeSubscriber.prototype._complete = function () {
            var windows = this.windows;
            while (windows.length > 0) {
                var window_2 = windows.shift();
                if (!window_2.closed) {
                    window_2.complete();
                }
            }
            this.destination.complete();
        };
        WindowTimeSubscriber.prototype.openWindow = function () {
            var window = new CountedSubject();
            this.windows.push(window);
            var destination = this.destination;
            destination.next(window);
            return window;
        };
        WindowTimeSubscriber.prototype.closeWindow = function (window) {
            window.complete();
            var windows = this.windows;
            windows.splice(windows.indexOf(window), 1);
        };
        return WindowTimeSubscriber;
    }(Subscriber));
    function dispatchWindowTimeSpanOnly(state) {
        var subscriber = state.subscriber, windowTimeSpan = state.windowTimeSpan, window = state.window;
        if (window) {
            subscriber.closeWindow(window);
        }
        state.window = subscriber.openWindow();
        this.schedule(state, windowTimeSpan);
    }
    function dispatchWindowCreation(state) {
        var windowTimeSpan = state.windowTimeSpan, subscriber = state.subscriber, scheduler = state.scheduler, windowCreationInterval = state.windowCreationInterval;
        var window = subscriber.openWindow();
        var action = this;
        var context = { action: action, subscription: null };
        var timeSpanState = { subscriber: subscriber, window: window, context: context };
        context.subscription = scheduler.schedule(dispatchWindowClose, windowTimeSpan, timeSpanState);
        action.add(context.subscription);
        action.schedule(state, windowCreationInterval);
    }
    function dispatchWindowClose(state) {
        var subscriber = state.subscriber, window = state.window, context = state.context;
        if (context && context.action && context.subscription) {
            context.action.remove(context.subscription);
        }
        subscriber.closeWindow(window);
    }

    function windowToggle(openings, closingSelector) {
        return function (source) { return source.lift(new WindowToggleOperator(openings, closingSelector)); };
    }
    var WindowToggleOperator = (function () {
        function WindowToggleOperator(openings, closingSelector) {
            this.openings = openings;
            this.closingSelector = closingSelector;
        }
        WindowToggleOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new WindowToggleSubscriber(subscriber, this.openings, this.closingSelector));
        };
        return WindowToggleOperator;
    }());
    var WindowToggleSubscriber = (function (_super) {
        __extends(WindowToggleSubscriber, _super);
        function WindowToggleSubscriber(destination, openings, closingSelector) {
            var _this = _super.call(this, destination) || this;
            _this.openings = openings;
            _this.closingSelector = closingSelector;
            _this.contexts = [];
            _this.add(_this.openSubscription = subscribeToResult(_this, openings, openings));
            return _this;
        }
        WindowToggleSubscriber.prototype._next = function (value) {
            var contexts = this.contexts;
            if (contexts) {
                var len = contexts.length;
                for (var i = 0; i < len; i++) {
                    contexts[i].window.next(value);
                }
            }
        };
        WindowToggleSubscriber.prototype._error = function (err) {
            var contexts = this.contexts;
            this.contexts = null;
            if (contexts) {
                var len = contexts.length;
                var index = -1;
                while (++index < len) {
                    var context_1 = contexts[index];
                    context_1.window.error(err);
                    context_1.subscription.unsubscribe();
                }
            }
            _super.prototype._error.call(this, err);
        };
        WindowToggleSubscriber.prototype._complete = function () {
            var contexts = this.contexts;
            this.contexts = null;
            if (contexts) {
                var len = contexts.length;
                var index = -1;
                while (++index < len) {
                    var context_2 = contexts[index];
                    context_2.window.complete();
                    context_2.subscription.unsubscribe();
                }
            }
            _super.prototype._complete.call(this);
        };
        WindowToggleSubscriber.prototype._unsubscribe = function () {
            var contexts = this.contexts;
            this.contexts = null;
            if (contexts) {
                var len = contexts.length;
                var index = -1;
                while (++index < len) {
                    var context_3 = contexts[index];
                    context_3.window.unsubscribe();
                    context_3.subscription.unsubscribe();
                }
            }
        };
        WindowToggleSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
            if (outerValue === this.openings) {
                var closingNotifier = void 0;
                try {
                    var closingSelector = this.closingSelector;
                    closingNotifier = closingSelector(innerValue);
                }
                catch (e) {
                    return this.error(e);
                }
                var window_1 = new Subject();
                var subscription = new Subscription();
                var context_4 = { window: window_1, subscription: subscription };
                this.contexts.push(context_4);
                var innerSubscription = subscribeToResult(this, closingNotifier, context_4);
                if (innerSubscription.closed) {
                    this.closeWindow(this.contexts.length - 1);
                }
                else {
                    innerSubscription.context = context_4;
                    subscription.add(innerSubscription);
                }
                this.destination.next(window_1);
            }
            else {
                this.closeWindow(this.contexts.indexOf(outerValue));
            }
        };
        WindowToggleSubscriber.prototype.notifyError = function (err) {
            this.error(err);
        };
        WindowToggleSubscriber.prototype.notifyComplete = function (inner) {
            if (inner !== this.openSubscription) {
                this.closeWindow(this.contexts.indexOf(inner.context));
            }
        };
        WindowToggleSubscriber.prototype.closeWindow = function (index) {
            if (index === -1) {
                return;
            }
            var contexts = this.contexts;
            var context = contexts[index];
            var window = context.window, subscription = context.subscription;
            contexts.splice(index, 1);
            window.complete();
            subscription.unsubscribe();
        };
        return WindowToggleSubscriber;
    }(OuterSubscriber));

    function windowWhen(closingSelector) {
        return function windowWhenOperatorFunction(source) {
            return source.lift(new WindowOperator$1(closingSelector));
        };
    }
    var WindowOperator$1 = (function () {
        function WindowOperator(closingSelector) {
            this.closingSelector = closingSelector;
        }
        WindowOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new WindowSubscriber$1(subscriber, this.closingSelector));
        };
        return WindowOperator;
    }());
    var WindowSubscriber$1 = (function (_super) {
        __extends(WindowSubscriber, _super);
        function WindowSubscriber(destination, closingSelector) {
            var _this = _super.call(this, destination) || this;
            _this.destination = destination;
            _this.closingSelector = closingSelector;
            _this.openWindow();
            return _this;
        }
        WindowSubscriber.prototype.notifyNext = function (_outerValue, _innerValue, _outerIndex, _innerIndex, innerSub) {
            this.openWindow(innerSub);
        };
        WindowSubscriber.prototype.notifyError = function (error) {
            this._error(error);
        };
        WindowSubscriber.prototype.notifyComplete = function (innerSub) {
            this.openWindow(innerSub);
        };
        WindowSubscriber.prototype._next = function (value) {
            this.window.next(value);
        };
        WindowSubscriber.prototype._error = function (err) {
            this.window.error(err);
            this.destination.error(err);
            this.unsubscribeClosingNotification();
        };
        WindowSubscriber.prototype._complete = function () {
            this.window.complete();
            this.destination.complete();
            this.unsubscribeClosingNotification();
        };
        WindowSubscriber.prototype.unsubscribeClosingNotification = function () {
            if (this.closingNotification) {
                this.closingNotification.unsubscribe();
            }
        };
        WindowSubscriber.prototype.openWindow = function (innerSub) {
            if (innerSub === void 0) { innerSub = null; }
            if (innerSub) {
                this.remove(innerSub);
                innerSub.unsubscribe();
            }
            var prevWindow = this.window;
            if (prevWindow) {
                prevWindow.complete();
            }
            var window = this.window = new Subject();
            this.destination.next(window);
            var closingNotifier;
            try {
                var closingSelector = this.closingSelector;
                closingNotifier = closingSelector();
            }
            catch (e) {
                this.destination.error(e);
                this.window.error(e);
                return;
            }
            this.add(this.closingNotification = subscribeToResult(this, closingNotifier));
        };
        return WindowSubscriber;
    }(OuterSubscriber));

    function withLatestFrom() {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        return function (source) {
            var project;
            if (typeof args[args.length - 1] === 'function') {
                project = args.pop();
            }
            var observables = args;
            return source.lift(new WithLatestFromOperator(observables, project));
        };
    }
    var WithLatestFromOperator = (function () {
        function WithLatestFromOperator(observables, project) {
            this.observables = observables;
            this.project = project;
        }
        WithLatestFromOperator.prototype.call = function (subscriber, source) {
            return source.subscribe(new WithLatestFromSubscriber(subscriber, this.observables, this.project));
        };
        return WithLatestFromOperator;
    }());
    var WithLatestFromSubscriber = (function (_super) {
        __extends(WithLatestFromSubscriber, _super);
        function WithLatestFromSubscriber(destination, observables, project) {
            var _this = _super.call(this, destination) || this;
            _this.observables = observables;
            _this.project = project;
            _this.toRespond = [];
            var len = observables.length;
            _this.values = new Array(len);
            for (var i = 0; i < len; i++) {
                _this.toRespond.push(i);
            }
            for (var i = 0; i < len; i++) {
                var observable = observables[i];
                _this.add(subscribeToResult(_this, observable, undefined, i));
            }
            return _this;
        }
        WithLatestFromSubscriber.prototype.notifyNext = function (_outerValue, innerValue, outerIndex) {
            this.values[outerIndex] = innerValue;
            var toRespond = this.toRespond;
            if (toRespond.length > 0) {
                var found = toRespond.indexOf(outerIndex);
                if (found !== -1) {
                    toRespond.splice(found, 1);
                }
            }
        };
        WithLatestFromSubscriber.prototype.notifyComplete = function () {
        };
        WithLatestFromSubscriber.prototype._next = function (value) {
            if (this.toRespond.length === 0) {
                var args = [value].concat(this.values);
                if (this.project) {
                    this._tryProject(args);
                }
                else {
                    this.destination.next(args);
                }
            }
        };
        WithLatestFromSubscriber.prototype._tryProject = function (args) {
            var result;
            try {
                result = this.project.apply(this, args);
            }
            catch (err) {
                this.destination.error(err);
                return;
            }
            this.destination.next(result);
        };
        return WithLatestFromSubscriber;
    }(OuterSubscriber));

    function zip$1() {
        var observables = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            observables[_i] = arguments[_i];
        }
        return function zipOperatorFunction(source) {
            return source.lift.call(zip.apply(void 0, [source].concat(observables)));
        };
    }

    function zipAll(project) {
        return function (source) { return source.lift(new ZipOperator(project)); };
    }



    var _operators = /*#__PURE__*/Object.freeze({
        audit: audit,
        auditTime: auditTime,
        buffer: buffer,
        bufferCount: bufferCount,
        bufferTime: bufferTime,
        bufferToggle: bufferToggle,
        bufferWhen: bufferWhen,
        catchError: catchError,
        combineAll: combineAll,
        combineLatest: combineLatest$1,
        concat: concat$1,
        concatAll: concatAll,
        concatMap: concatMap,
        concatMapTo: concatMapTo,
        count: count,
        debounce: debounce,
        debounceTime: debounceTime,
        defaultIfEmpty: defaultIfEmpty,
        delay: delay,
        delayWhen: delayWhen,
        dematerialize: dematerialize,
        distinct: distinct,
        distinctUntilChanged: distinctUntilChanged,
        distinctUntilKeyChanged: distinctUntilKeyChanged,
        elementAt: elementAt,
        endWith: endWith,
        every: every,
        exhaust: exhaust,
        exhaustMap: exhaustMap,
        expand: expand,
        filter: filter,
        finalize: finalize,
        find: find,
        findIndex: findIndex,
        first: first,
        groupBy: groupBy,
        ignoreElements: ignoreElements,
        isEmpty: isEmpty,
        last: last,
        map: map,
        mapTo: mapTo,
        materialize: materialize,
        max: max,
        merge: merge$1,
        mergeAll: mergeAll,
        mergeMap: mergeMap,
        flatMap: flatMap,
        mergeMapTo: mergeMapTo,
        mergeScan: mergeScan,
        min: min,
        multicast: multicast,
        observeOn: observeOn,
        onErrorResumeNext: onErrorResumeNext$1,
        pairwise: pairwise,
        partition: partition$1,
        pluck: pluck,
        publish: publish,
        publishBehavior: publishBehavior,
        publishLast: publishLast,
        publishReplay: publishReplay,
        race: race$1,
        reduce: reduce,
        repeat: repeat,
        repeatWhen: repeatWhen,
        retry: retry,
        retryWhen: retryWhen,
        refCount: refCount,
        sample: sample,
        sampleTime: sampleTime,
        scan: scan,
        sequenceEqual: sequenceEqual,
        share: share,
        shareReplay: shareReplay,
        single: single,
        skip: skip,
        skipLast: skipLast,
        skipUntil: skipUntil,
        skipWhile: skipWhile,
        startWith: startWith,
        subscribeOn: subscribeOn,
        switchAll: switchAll,
        switchMap: switchMap,
        switchMapTo: switchMapTo,
        take: take,
        takeLast: takeLast,
        takeUntil: takeUntil,
        takeWhile: takeWhile,
        tap: tap,
        throttle: throttle,
        throttleTime: throttleTime,
        throwIfEmpty: throwIfEmpty,
        timeInterval: timeInterval,
        timeout: timeout,
        timeoutWith: timeoutWith,
        timestamp: timestamp,
        toArray: toArray,
        window: window$1,
        windowCount: windowCount,
        windowTime: windowTime,
        windowToggle: windowToggle,
        windowWhen: windowWhen,
        withLatestFrom: withLatestFrom,
        zip: zip$1,
        zipAll: zipAll
    });

    var SubscriptionLog = (function () {
        function SubscriptionLog(subscribedFrame, unsubscribedFrame) {
            if (unsubscribedFrame === void 0) { unsubscribedFrame = Number.POSITIVE_INFINITY; }
            this.subscribedFrame = subscribedFrame;
            this.unsubscribedFrame = unsubscribedFrame;
        }
        return SubscriptionLog;
    }());

    var SubscriptionLoggable = (function () {
        function SubscriptionLoggable() {
            this.subscriptions = [];
        }
        SubscriptionLoggable.prototype.logSubscribedFrame = function () {
            this.subscriptions.push(new SubscriptionLog(this.scheduler.now()));
            return this.subscriptions.length - 1;
        };
        SubscriptionLoggable.prototype.logUnsubscribedFrame = function (index) {
            var subscriptionLogs = this.subscriptions;
            var oldSubscriptionLog = subscriptionLogs[index];
            subscriptionLogs[index] = new SubscriptionLog(oldSubscriptionLog.subscribedFrame, this.scheduler.now());
        };
        return SubscriptionLoggable;
    }());

    function applyMixins(derivedCtor, baseCtors) {
        for (var i = 0, len = baseCtors.length; i < len; i++) {
            var baseCtor = baseCtors[i];
            var propertyKeys = Object.getOwnPropertyNames(baseCtor.prototype);
            for (var j = 0, len2 = propertyKeys.length; j < len2; j++) {
                var name_1 = propertyKeys[j];
                derivedCtor.prototype[name_1] = baseCtor.prototype[name_1];
            }
        }
    }

    var ColdObservable = (function (_super) {
        __extends(ColdObservable, _super);
        function ColdObservable(messages, scheduler) {
            var _this = _super.call(this, function (subscriber) {
                var observable = this;
                var index = observable.logSubscribedFrame();
                var subscription = new Subscription();
                subscription.add(new Subscription(function () {
                    observable.logUnsubscribedFrame(index);
                }));
                observable.scheduleMessages(subscriber);
                return subscription;
            }) || this;
            _this.messages = messages;
            _this.subscriptions = [];
            _this.scheduler = scheduler;
            return _this;
        }
        ColdObservable.prototype.scheduleMessages = function (subscriber) {
            var messagesLength = this.messages.length;
            for (var i = 0; i < messagesLength; i++) {
                var message = this.messages[i];
                subscriber.add(this.scheduler.schedule(function (_a) {
                    var message = _a.message, subscriber = _a.subscriber;
                    message.notification.observe(subscriber);
                }, message.frame, { message: message, subscriber: subscriber }));
            }
        };
        return ColdObservable;
    }(Observable));
    applyMixins(ColdObservable, [SubscriptionLoggable]);

    var HotObservable = (function (_super) {
        __extends(HotObservable, _super);
        function HotObservable(messages, scheduler) {
            var _this = _super.call(this) || this;
            _this.messages = messages;
            _this.subscriptions = [];
            _this.scheduler = scheduler;
            return _this;
        }
        HotObservable.prototype._subscribe = function (subscriber) {
            var subject = this;
            var index = subject.logSubscribedFrame();
            var subscription = new Subscription();
            subscription.add(new Subscription(function () {
                subject.logUnsubscribedFrame(index);
            }));
            subscription.add(_super.prototype._subscribe.call(this, subscriber));
            return subscription;
        };
        HotObservable.prototype.setup = function () {
            var subject = this;
            var messagesLength = subject.messages.length;
            for (var i = 0; i < messagesLength; i++) {
                (function () {
                    var message = subject.messages[i];
                    subject.scheduler.schedule(function () { message.notification.observe(subject); }, message.frame);
                })();
            }
        };
        return HotObservable;
    }(Subject));
    applyMixins(HotObservable, [SubscriptionLoggable]);

    var defaultMaxFrame = 750;
    var TestScheduler = (function (_super) {
        __extends(TestScheduler, _super);
        function TestScheduler(assertDeepEqual) {
            var _this = _super.call(this, VirtualAction, defaultMaxFrame) || this;
            _this.assertDeepEqual = assertDeepEqual;
            _this.hotObservables = [];
            _this.coldObservables = [];
            _this.flushTests = [];
            _this.runMode = false;
            return _this;
        }
        TestScheduler.prototype.createTime = function (marbles) {
            var indexOf = marbles.indexOf('|');
            if (indexOf === -1) {
                throw new Error('marble diagram for time should have a completion marker "|"');
            }
            return indexOf * TestScheduler.frameTimeFactor;
        };
        TestScheduler.prototype.createColdObservable = function (marbles, values, error) {
            if (marbles.indexOf('^') !== -1) {
                throw new Error('cold observable cannot have subscription offset "^"');
            }
            if (marbles.indexOf('!') !== -1) {
                throw new Error('cold observable cannot have unsubscription marker "!"');
            }
            var messages = TestScheduler.parseMarbles(marbles, values, error, undefined, this.runMode);
            var cold = new ColdObservable(messages, this);
            this.coldObservables.push(cold);
            return cold;
        };
        TestScheduler.prototype.createHotObservable = function (marbles, values, error) {
            if (marbles.indexOf('!') !== -1) {
                throw new Error('hot observable cannot have unsubscription marker "!"');
            }
            var messages = TestScheduler.parseMarbles(marbles, values, error, undefined, this.runMode);
            var subject = new HotObservable(messages, this);
            this.hotObservables.push(subject);
            return subject;
        };
        TestScheduler.prototype.materializeInnerObservable = function (observable, outerFrame) {
            var _this = this;
            var messages = [];
            observable.subscribe(function (value) {
                messages.push({ frame: _this.frame - outerFrame, notification: Notification.createNext(value) });
            }, function (err) {
                messages.push({ frame: _this.frame - outerFrame, notification: Notification.createError(err) });
            }, function () {
                messages.push({ frame: _this.frame - outerFrame, notification: Notification.createComplete() });
            });
            return messages;
        };
        TestScheduler.prototype.expectObservable = function (observable, subscriptionMarbles) {
            var _this = this;
            if (subscriptionMarbles === void 0) { subscriptionMarbles = null; }
            var actual = [];
            var flushTest = { actual: actual, ready: false };
            var subscriptionParsed = TestScheduler.parseMarblesAsSubscriptions(subscriptionMarbles, this.runMode);
            var subscriptionFrame = subscriptionParsed.subscribedFrame === Number.POSITIVE_INFINITY ?
                0 : subscriptionParsed.subscribedFrame;
            var unsubscriptionFrame = subscriptionParsed.unsubscribedFrame;
            var subscription;
            this.schedule(function () {
                subscription = observable.subscribe(function (x) {
                    var value = x;
                    if (x instanceof Observable) {
                        value = _this.materializeInnerObservable(value, _this.frame);
                    }
                    actual.push({ frame: _this.frame, notification: Notification.createNext(value) });
                }, function (err) {
                    actual.push({ frame: _this.frame, notification: Notification.createError(err) });
                }, function () {
                    actual.push({ frame: _this.frame, notification: Notification.createComplete() });
                });
            }, subscriptionFrame);
            if (unsubscriptionFrame !== Number.POSITIVE_INFINITY) {
                this.schedule(function () { return subscription.unsubscribe(); }, unsubscriptionFrame);
            }
            this.flushTests.push(flushTest);
            var runMode = this.runMode;
            return {
                toBe: function (marbles, values, errorValue) {
                    flushTest.ready = true;
                    flushTest.expected = TestScheduler.parseMarbles(marbles, values, errorValue, true, runMode);
                }
            };
        };
        TestScheduler.prototype.expectSubscriptions = function (actualSubscriptionLogs) {
            var flushTest = { actual: actualSubscriptionLogs, ready: false };
            this.flushTests.push(flushTest);
            var runMode = this.runMode;
            return {
                toBe: function (marbles) {
                    var marblesArray = (typeof marbles === 'string') ? [marbles] : marbles;
                    flushTest.ready = true;
                    flushTest.expected = marblesArray.map(function (marbles) {
                        return TestScheduler.parseMarblesAsSubscriptions(marbles, runMode);
                    });
                }
            };
        };
        TestScheduler.prototype.flush = function () {
            var _this = this;
            var hotObservables = this.hotObservables;
            while (hotObservables.length > 0) {
                hotObservables.shift().setup();
            }
            _super.prototype.flush.call(this);
            this.flushTests = this.flushTests.filter(function (test) {
                if (test.ready) {
                    _this.assertDeepEqual(test.actual, test.expected);
                    return false;
                }
                return true;
            });
        };
        TestScheduler.parseMarblesAsSubscriptions = function (marbles, runMode) {
            var _this = this;
            if (runMode === void 0) { runMode = false; }
            if (typeof marbles !== 'string') {
                return new SubscriptionLog(Number.POSITIVE_INFINITY);
            }
            var len = marbles.length;
            var groupStart = -1;
            var subscriptionFrame = Number.POSITIVE_INFINITY;
            var unsubscriptionFrame = Number.POSITIVE_INFINITY;
            var frame = 0;
            var _loop_1 = function (i) {
                var nextFrame = frame;
                var advanceFrameBy = function (count) {
                    nextFrame += count * _this.frameTimeFactor;
                };
                var c = marbles[i];
                switch (c) {
                    case ' ':
                        if (!runMode) {
                            advanceFrameBy(1);
                        }
                        break;
                    case '-':
                        advanceFrameBy(1);
                        break;
                    case '(':
                        groupStart = frame;
                        advanceFrameBy(1);
                        break;
                    case ')':
                        groupStart = -1;
                        advanceFrameBy(1);
                        break;
                    case '^':
                        if (subscriptionFrame !== Number.POSITIVE_INFINITY) {
                            throw new Error('found a second subscription point \'^\' in a ' +
                                'subscription marble diagram. There can only be one.');
                        }
                        subscriptionFrame = groupStart > -1 ? groupStart : frame;
                        advanceFrameBy(1);
                        break;
                    case '!':
                        if (unsubscriptionFrame !== Number.POSITIVE_INFINITY) {
                            throw new Error('found a second subscription point \'^\' in a ' +
                                'subscription marble diagram. There can only be one.');
                        }
                        unsubscriptionFrame = groupStart > -1 ? groupStart : frame;
                        break;
                    default:
                        if (runMode && c.match(/^[0-9]$/)) {
                            if (i === 0 || marbles[i - 1] === ' ') {
                                var buffer = marbles.slice(i);
                                var match = buffer.match(/^([0-9]+(?:\.[0-9]+)?)(ms|s|m) /);
                                if (match) {
                                    i += match[0].length - 1;
                                    var duration = parseFloat(match[1]);
                                    var unit = match[2];
                                    var durationInMs = void 0;
                                    switch (unit) {
                                        case 'ms':
                                            durationInMs = duration;
                                            break;
                                        case 's':
                                            durationInMs = duration * 1000;
                                            break;
                                        case 'm':
                                            durationInMs = duration * 1000 * 60;
                                            break;
                                        default:
                                            break;
                                    }
                                    advanceFrameBy(durationInMs / this_1.frameTimeFactor);
                                    break;
                                }
                            }
                        }
                        throw new Error('there can only be \'^\' and \'!\' markers in a ' +
                            'subscription marble diagram. Found instead \'' + c + '\'.');
                }
                frame = nextFrame;
                out_i_1 = i;
            };
            var this_1 = this, out_i_1;
            for (var i = 0; i < len; i++) {
                _loop_1(i);
                i = out_i_1;
            }
            if (unsubscriptionFrame < 0) {
                return new SubscriptionLog(subscriptionFrame);
            }
            else {
                return new SubscriptionLog(subscriptionFrame, unsubscriptionFrame);
            }
        };
        TestScheduler.parseMarbles = function (marbles, values, errorValue, materializeInnerObservables, runMode) {
            var _this = this;
            if (materializeInnerObservables === void 0) { materializeInnerObservables = false; }
            if (runMode === void 0) { runMode = false; }
            if (marbles.indexOf('!') !== -1) {
                throw new Error('conventional marble diagrams cannot have the ' +
                    'unsubscription marker "!"');
            }
            var len = marbles.length;
            var testMessages = [];
            var subIndex = runMode ? marbles.replace(/^[ ]+/, '').indexOf('^') : marbles.indexOf('^');
            var frame = subIndex === -1 ? 0 : (subIndex * -this.frameTimeFactor);
            var getValue = typeof values !== 'object' ?
                function (x) { return x; } :
                function (x) {
                    if (materializeInnerObservables && values[x] instanceof ColdObservable) {
                        return values[x].messages;
                    }
                    return values[x];
                };
            var groupStart = -1;
            var _loop_2 = function (i) {
                var nextFrame = frame;
                var advanceFrameBy = function (count) {
                    nextFrame += count * _this.frameTimeFactor;
                };
                var notification = void 0;
                var c = marbles[i];
                switch (c) {
                    case ' ':
                        if (!runMode) {
                            advanceFrameBy(1);
                        }
                        break;
                    case '-':
                        advanceFrameBy(1);
                        break;
                    case '(':
                        groupStart = frame;
                        advanceFrameBy(1);
                        break;
                    case ')':
                        groupStart = -1;
                        advanceFrameBy(1);
                        break;
                    case '|':
                        notification = Notification.createComplete();
                        advanceFrameBy(1);
                        break;
                    case '^':
                        advanceFrameBy(1);
                        break;
                    case '#':
                        notification = Notification.createError(errorValue || 'error');
                        advanceFrameBy(1);
                        break;
                    default:
                        if (runMode && c.match(/^[0-9]$/)) {
                            if (i === 0 || marbles[i - 1] === ' ') {
                                var buffer = marbles.slice(i);
                                var match = buffer.match(/^([0-9]+(?:\.[0-9]+)?)(ms|s|m) /);
                                if (match) {
                                    i += match[0].length - 1;
                                    var duration = parseFloat(match[1]);
                                    var unit = match[2];
                                    var durationInMs = void 0;
                                    switch (unit) {
                                        case 'ms':
                                            durationInMs = duration;
                                            break;
                                        case 's':
                                            durationInMs = duration * 1000;
                                            break;
                                        case 'm':
                                            durationInMs = duration * 1000 * 60;
                                            break;
                                        default:
                                            break;
                                    }
                                    advanceFrameBy(durationInMs / this_2.frameTimeFactor);
                                    break;
                                }
                            }
                        }
                        notification = Notification.createNext(getValue(c));
                        advanceFrameBy(1);
                        break;
                }
                if (notification) {
                    testMessages.push({ frame: groupStart > -1 ? groupStart : frame, notification: notification });
                }
                frame = nextFrame;
                out_i_2 = i;
            };
            var this_2 = this, out_i_2;
            for (var i = 0; i < len; i++) {
                _loop_2(i);
                i = out_i_2;
            }
            return testMessages;
        };
        TestScheduler.prototype.run = function (callback) {
            var prevFrameTimeFactor = TestScheduler.frameTimeFactor;
            var prevMaxFrames = this.maxFrames;
            TestScheduler.frameTimeFactor = 1;
            this.maxFrames = Number.POSITIVE_INFINITY;
            this.runMode = true;
            AsyncScheduler.delegate = this;
            var helpers = {
                cold: this.createColdObservable.bind(this),
                hot: this.createHotObservable.bind(this),
                flush: this.flush.bind(this),
                expectObservable: this.expectObservable.bind(this),
                expectSubscriptions: this.expectSubscriptions.bind(this),
            };
            try {
                var ret = callback(helpers);
                this.flush();
                return ret;
            }
            finally {
                TestScheduler.frameTimeFactor = prevFrameTimeFactor;
                this.maxFrames = prevMaxFrames;
                this.runMode = false;
                AsyncScheduler.delegate = undefined;
            }
        };
        return TestScheduler;
    }(VirtualTimeScheduler));



    var _testing = /*#__PURE__*/Object.freeze({
        TestScheduler: TestScheduler
    });

    var __window = typeof window !== 'undefined' && window;
    var __self = typeof self !== 'undefined' && typeof WorkerGlobalScope !== 'undefined' &&
        self instanceof WorkerGlobalScope && self;
    var __global = typeof global !== 'undefined' && global;
    var _root = __window || __global || __self;
    (function () {
        if (!_root) {
            throw new Error('RxJS could not find any global context (window, self, global)');
        }
    })();

    function getCORSRequest() {
        if (_root.XMLHttpRequest) {
            return new _root.XMLHttpRequest();
        }
        else if (!!_root.XDomainRequest) {
            return new _root.XDomainRequest();
        }
        else {
            throw new Error('CORS is not supported by your browser');
        }
    }
    function getXMLHttpRequest() {
        if (_root.XMLHttpRequest) {
            return new _root.XMLHttpRequest();
        }
        else {
            var progId = void 0;
            try {
                var progIds = ['Msxml2.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.4.0'];
                for (var i = 0; i < 3; i++) {
                    try {
                        progId = progIds[i];
                        if (new _root.ActiveXObject(progId)) {
                            break;
                        }
                    }
                    catch (e) {
                    }
                }
                return new _root.ActiveXObject(progId);
            }
            catch (e) {
                throw new Error('XMLHttpRequest is not supported by your browser');
            }
        }
    }
    function ajaxGet(url, headers) {
        if (headers === void 0) { headers = null; }
        return new AjaxObservable({ method: 'GET', url: url, headers: headers });
    }
    function ajaxPost(url, body, headers) {
        return new AjaxObservable({ method: 'POST', url: url, body: body, headers: headers });
    }
    function ajaxDelete(url, headers) {
        return new AjaxObservable({ method: 'DELETE', url: url, headers: headers });
    }
    function ajaxPut(url, body, headers) {
        return new AjaxObservable({ method: 'PUT', url: url, body: body, headers: headers });
    }
    function ajaxPatch(url, body, headers) {
        return new AjaxObservable({ method: 'PATCH', url: url, body: body, headers: headers });
    }
    var mapResponse = map(function (x, index) { return x.response; });
    function ajaxGetJSON(url, headers) {
        return mapResponse(new AjaxObservable({
            method: 'GET',
            url: url,
            responseType: 'json',
            headers: headers
        }));
    }
    var AjaxObservable = (function (_super) {
        __extends(AjaxObservable, _super);
        function AjaxObservable(urlOrRequest) {
            var _this = _super.call(this) || this;
            var request = {
                async: true,
                createXHR: function () {
                    return this.crossDomain ? getCORSRequest() : getXMLHttpRequest();
                },
                crossDomain: true,
                withCredentials: false,
                headers: {},
                method: 'GET',
                responseType: 'json',
                timeout: 0
            };
            if (typeof urlOrRequest === 'string') {
                request.url = urlOrRequest;
            }
            else {
                for (var prop in urlOrRequest) {
                    if (urlOrRequest.hasOwnProperty(prop)) {
                        request[prop] = urlOrRequest[prop];
                    }
                }
            }
            _this.request = request;
            return _this;
        }
        AjaxObservable.prototype._subscribe = function (subscriber) {
            return new AjaxSubscriber(subscriber, this.request);
        };
        AjaxObservable.create = (function () {
            var create = function (urlOrRequest) {
                return new AjaxObservable(urlOrRequest);
            };
            create.get = ajaxGet;
            create.post = ajaxPost;
            create.delete = ajaxDelete;
            create.put = ajaxPut;
            create.patch = ajaxPatch;
            create.getJSON = ajaxGetJSON;
            return create;
        })();
        return AjaxObservable;
    }(Observable));
    var AjaxSubscriber = (function (_super) {
        __extends(AjaxSubscriber, _super);
        function AjaxSubscriber(destination, request) {
            var _this = _super.call(this, destination) || this;
            _this.request = request;
            _this.done = false;
            var headers = request.headers = request.headers || {};
            if (!request.crossDomain && !_this.getHeader(headers, 'X-Requested-With')) {
                headers['X-Requested-With'] = 'XMLHttpRequest';
            }
            var contentTypeHeader = _this.getHeader(headers, 'Content-Type');
            if (!contentTypeHeader && !(_root.FormData && request.body instanceof _root.FormData) && typeof request.body !== 'undefined') {
                headers['Content-Type'] = 'application/x-www-form-urlencoded; charset=UTF-8';
            }
            request.body = _this.serializeBody(request.body, _this.getHeader(request.headers, 'Content-Type'));
            _this.send();
            return _this;
        }
        AjaxSubscriber.prototype.next = function (e) {
            this.done = true;
            var _a = this, xhr = _a.xhr, request = _a.request, destination = _a.destination;
            var result;
            try {
                result = new AjaxResponse(e, xhr, request);
            }
            catch (err) {
                return destination.error(err);
            }
            destination.next(result);
        };
        AjaxSubscriber.prototype.send = function () {
            var _a = this, request = _a.request, _b = _a.request, user = _b.user, method = _b.method, url = _b.url, async = _b.async, password = _b.password, headers = _b.headers, body = _b.body;
            try {
                var xhr = this.xhr = request.createXHR();
                this.setupEvents(xhr, request);
                if (user) {
                    xhr.open(method, url, async, user, password);
                }
                else {
                    xhr.open(method, url, async);
                }
                if (async) {
                    xhr.timeout = request.timeout;
                    xhr.responseType = request.responseType;
                }
                if ('withCredentials' in xhr) {
                    xhr.withCredentials = !!request.withCredentials;
                }
                this.setHeaders(xhr, headers);
                if (body) {
                    xhr.send(body);
                }
                else {
                    xhr.send();
                }
            }
            catch (err) {
                this.error(err);
            }
        };
        AjaxSubscriber.prototype.serializeBody = function (body, contentType) {
            if (!body || typeof body === 'string') {
                return body;
            }
            else if (_root.FormData && body instanceof _root.FormData) {
                return body;
            }
            if (contentType) {
                var splitIndex = contentType.indexOf(';');
                if (splitIndex !== -1) {
                    contentType = contentType.substring(0, splitIndex);
                }
            }
            switch (contentType) {
                case 'application/x-www-form-urlencoded':
                    return Object.keys(body).map(function (key) { return encodeURIComponent(key) + "=" + encodeURIComponent(body[key]); }).join('&');
                case 'application/json':
                    return JSON.stringify(body);
                default:
                    return body;
            }
        };
        AjaxSubscriber.prototype.setHeaders = function (xhr, headers) {
            for (var key in headers) {
                if (headers.hasOwnProperty(key)) {
                    xhr.setRequestHeader(key, headers[key]);
                }
            }
        };
        AjaxSubscriber.prototype.getHeader = function (headers, headerName) {
            for (var key in headers) {
                if (key.toLowerCase() === headerName.toLowerCase()) {
                    return headers[key];
                }
            }
            return undefined;
        };
        AjaxSubscriber.prototype.setupEvents = function (xhr, request) {
            var progressSubscriber = request.progressSubscriber;
            function xhrTimeout(e) {
                var _a = xhrTimeout, subscriber = _a.subscriber, progressSubscriber = _a.progressSubscriber, request = _a.request;
                if (progressSubscriber) {
                    progressSubscriber.error(e);
                }
                var error;
                try {
                    error = new AjaxTimeoutError(this, request);
                }
                catch (err) {
                    error = err;
                }
                subscriber.error(error);
            }
            xhr.ontimeout = xhrTimeout;
            xhrTimeout.request = request;
            xhrTimeout.subscriber = this;
            xhrTimeout.progressSubscriber = progressSubscriber;
            if (xhr.upload && 'withCredentials' in xhr) {
                if (progressSubscriber) {
                    var xhrProgress_1;
                    xhrProgress_1 = function (e) {
                        var progressSubscriber = xhrProgress_1.progressSubscriber;
                        progressSubscriber.next(e);
                    };
                    if (_root.XDomainRequest) {
                        xhr.onprogress = xhrProgress_1;
                    }
                    else {
                        xhr.upload.onprogress = xhrProgress_1;
                    }
                    xhrProgress_1.progressSubscriber = progressSubscriber;
                }
                var xhrError_1;
                xhrError_1 = function (e) {
                    var _a = xhrError_1, progressSubscriber = _a.progressSubscriber, subscriber = _a.subscriber, request = _a.request;
                    if (progressSubscriber) {
                        progressSubscriber.error(e);
                    }
                    var error;
                    try {
                        error = new AjaxError('ajax error', this, request);
                    }
                    catch (err) {
                        error = err;
                    }
                    subscriber.error(error);
                };
                xhr.onerror = xhrError_1;
                xhrError_1.request = request;
                xhrError_1.subscriber = this;
                xhrError_1.progressSubscriber = progressSubscriber;
            }
            function xhrReadyStateChange(e) {
                return;
            }
            xhr.onreadystatechange = xhrReadyStateChange;
            xhrReadyStateChange.subscriber = this;
            xhrReadyStateChange.progressSubscriber = progressSubscriber;
            xhrReadyStateChange.request = request;
            function xhrLoad(e) {
                var _a = xhrLoad, subscriber = _a.subscriber, progressSubscriber = _a.progressSubscriber, request = _a.request;
                if (this.readyState === 4) {
                    var status_1 = this.status === 1223 ? 204 : this.status;
                    var response = (this.responseType === 'text' ? (this.response || this.responseText) : this.response);
                    if (status_1 === 0) {
                        status_1 = response ? 200 : 0;
                    }
                    if (status_1 < 400) {
                        if (progressSubscriber) {
                            progressSubscriber.complete();
                        }
                        subscriber.next(e);
                        subscriber.complete();
                    }
                    else {
                        if (progressSubscriber) {
                            progressSubscriber.error(e);
                        }
                        var error = void 0;
                        try {
                            error = new AjaxError('ajax error ' + status_1, this, request);
                        }
                        catch (err) {
                            error = err;
                        }
                        subscriber.error(error);
                    }
                }
            }
            xhr.onload = xhrLoad;
            xhrLoad.subscriber = this;
            xhrLoad.progressSubscriber = progressSubscriber;
            xhrLoad.request = request;
        };
        AjaxSubscriber.prototype.unsubscribe = function () {
            var _a = this, done = _a.done, xhr = _a.xhr;
            if (!done && xhr && xhr.readyState !== 4 && typeof xhr.abort === 'function') {
                xhr.abort();
            }
            _super.prototype.unsubscribe.call(this);
        };
        return AjaxSubscriber;
    }(Subscriber));
    var AjaxResponse = (function () {
        function AjaxResponse(originalEvent, xhr, request) {
            this.originalEvent = originalEvent;
            this.xhr = xhr;
            this.request = request;
            this.status = xhr.status;
            this.responseType = xhr.responseType || request.responseType;
            this.response = parseXhrResponse(this.responseType, xhr);
        }
        return AjaxResponse;
    }());
    var AjaxErrorImpl = (function () {
        function AjaxErrorImpl(message, xhr, request) {
            Error.call(this);
            this.message = message;
            this.name = 'AjaxError';
            this.xhr = xhr;
            this.request = request;
            this.status = xhr.status;
            this.responseType = xhr.responseType || request.responseType;
            this.response = parseXhrResponse(this.responseType, xhr);
            return this;
        }
        AjaxErrorImpl.prototype = Object.create(Error.prototype);
        return AjaxErrorImpl;
    })();
    var AjaxError = AjaxErrorImpl;
    function parseJson(xhr) {
        if ('response' in xhr) {
            return xhr.responseType ? xhr.response : JSON.parse(xhr.response || xhr.responseText || 'null');
        }
        else {
            return JSON.parse(xhr.responseText || 'null');
        }
    }
    function parseXhrResponse(responseType, xhr) {
        switch (responseType) {
            case 'json':
                return parseJson(xhr);
            case 'xml':
                return xhr.responseXML;
            case 'text':
            default:
                return ('response' in xhr) ? xhr.response : xhr.responseText;
        }
    }
    function AjaxTimeoutErrorImpl(xhr, request) {
        AjaxError.call(this, 'ajax timeout', xhr, request);
        this.name = 'AjaxTimeoutError';
        return this;
    }
    var AjaxTimeoutError = AjaxTimeoutErrorImpl;

    var ajax = (function () { return AjaxObservable.create; })();



    var _ajax = /*#__PURE__*/Object.freeze({
        ajax: ajax,
        AjaxResponse: AjaxResponse,
        AjaxError: AjaxError,
        AjaxTimeoutError: AjaxTimeoutError
    });

    var DEFAULT_WEBSOCKET_CONFIG = {
        url: '',
        deserializer: function (e) { return JSON.parse(e.data); },
        serializer: function (value) { return JSON.stringify(value); },
    };
    var WEBSOCKETSUBJECT_INVALID_ERROR_OBJECT = 'WebSocketSubject.error must be called with an object with an error code, and an optional reason: { code: number, reason: string }';
    var WebSocketSubject = (function (_super) {
        __extends(WebSocketSubject, _super);
        function WebSocketSubject(urlConfigOrSource, destination) {
            var _this = _super.call(this) || this;
            if (urlConfigOrSource instanceof Observable) {
                _this.destination = destination;
                _this.source = urlConfigOrSource;
            }
            else {
                var config = _this._config = __assign({}, DEFAULT_WEBSOCKET_CONFIG);
                _this._output = new Subject();
                if (typeof urlConfigOrSource === 'string') {
                    config.url = urlConfigOrSource;
                }
                else {
                    for (var key in urlConfigOrSource) {
                        if (urlConfigOrSource.hasOwnProperty(key)) {
                            config[key] = urlConfigOrSource[key];
                        }
                    }
                }
                if (!config.WebSocketCtor && WebSocket) {
                    config.WebSocketCtor = WebSocket;
                }
                else if (!config.WebSocketCtor) {
                    throw new Error('no WebSocket constructor can be found');
                }
                _this.destination = new ReplaySubject();
            }
            return _this;
        }
        WebSocketSubject.prototype.lift = function (operator) {
            var sock = new WebSocketSubject(this._config, this.destination);
            sock.operator = operator;
            sock.source = this;
            return sock;
        };
        WebSocketSubject.prototype._resetState = function () {
            this._socket = null;
            if (!this.source) {
                this.destination = new ReplaySubject();
            }
            this._output = new Subject();
        };
        WebSocketSubject.prototype.multiplex = function (subMsg, unsubMsg, messageFilter) {
            var self = this;
            return new Observable(function (observer) {
                try {
                    self.next(subMsg());
                }
                catch (err) {
                    observer.error(err);
                }
                var subscription = self.subscribe(function (x) {
                    try {
                        if (messageFilter(x)) {
                            observer.next(x);
                        }
                    }
                    catch (err) {
                        observer.error(err);
                    }
                }, function (err) { return observer.error(err); }, function () { return observer.complete(); });
                return function () {
                    try {
                        self.next(unsubMsg());
                    }
                    catch (err) {
                        observer.error(err);
                    }
                    subscription.unsubscribe();
                };
            });
        };
        WebSocketSubject.prototype._connectSocket = function () {
            var _this = this;
            var _a = this._config, WebSocketCtor = _a.WebSocketCtor, protocol = _a.protocol, url = _a.url, binaryType = _a.binaryType;
            var observer = this._output;
            var socket = null;
            try {
                socket = protocol ?
                    new WebSocketCtor(url, protocol) :
                    new WebSocketCtor(url);
                this._socket = socket;
                if (binaryType) {
                    this._socket.binaryType = binaryType;
                }
            }
            catch (e) {
                observer.error(e);
                return;
            }
            var subscription = new Subscription(function () {
                _this._socket = null;
                if (socket && socket.readyState === 1) {
                    socket.close();
                }
            });
            socket.onopen = function (e) {
                var _socket = _this._socket;
                if (!_socket) {
                    socket.close();
                    _this._resetState();
                    return;
                }
                var openObserver = _this._config.openObserver;
                if (openObserver) {
                    openObserver.next(e);
                }
                var queue = _this.destination;
                _this.destination = Subscriber.create(function (x) {
                    if (socket.readyState === 1) {
                        try {
                            var serializer = _this._config.serializer;
                            socket.send(serializer(x));
                        }
                        catch (e) {
                            _this.destination.error(e);
                        }
                    }
                }, function (e) {
                    var closingObserver = _this._config.closingObserver;
                    if (closingObserver) {
                        closingObserver.next(undefined);
                    }
                    if (e && e.code) {
                        socket.close(e.code, e.reason);
                    }
                    else {
                        observer.error(new TypeError(WEBSOCKETSUBJECT_INVALID_ERROR_OBJECT));
                    }
                    _this._resetState();
                }, function () {
                    var closingObserver = _this._config.closingObserver;
                    if (closingObserver) {
                        closingObserver.next(undefined);
                    }
                    socket.close();
                    _this._resetState();
                });
                if (queue && queue instanceof ReplaySubject) {
                    subscription.add(queue.subscribe(_this.destination));
                }
            };
            socket.onerror = function (e) {
                _this._resetState();
                observer.error(e);
            };
            socket.onclose = function (e) {
                _this._resetState();
                var closeObserver = _this._config.closeObserver;
                if (closeObserver) {
                    closeObserver.next(e);
                }
                if (e.wasClean) {
                    observer.complete();
                }
                else {
                    observer.error(e);
                }
            };
            socket.onmessage = function (e) {
                try {
                    var deserializer = _this._config.deserializer;
                    observer.next(deserializer(e));
                }
                catch (err) {
                    observer.error(err);
                }
            };
        };
        WebSocketSubject.prototype._subscribe = function (subscriber) {
            var _this = this;
            var source = this.source;
            if (source) {
                return source.subscribe(subscriber);
            }
            if (!this._socket) {
                this._connectSocket();
            }
            this._output.subscribe(subscriber);
            subscriber.add(function () {
                var _socket = _this._socket;
                if (_this._output.observers.length === 0) {
                    if (_socket && _socket.readyState === 1) {
                        _socket.close();
                    }
                    _this._resetState();
                }
            });
            return subscriber;
        };
        WebSocketSubject.prototype.unsubscribe = function () {
            var _socket = this._socket;
            if (_socket && _socket.readyState === 1) {
                _socket.close();
            }
            this._resetState();
            _super.prototype.unsubscribe.call(this);
        };
        return WebSocketSubject;
    }(AnonymousSubject));

    function webSocket(urlConfigOrSource) {
        return new WebSocketSubject(urlConfigOrSource);
    }



    var _webSocket = /*#__PURE__*/Object.freeze({
        webSocket: webSocket,
        WebSocketSubject: WebSocketSubject
    });

    function fromFetch(input, initWithSelector) {
        if (initWithSelector === void 0) { initWithSelector = {}; }
        var selector = initWithSelector.selector, init = __rest(initWithSelector, ["selector"]);
        return new Observable(function (subscriber) {
            var controller = new AbortController();
            var signal = controller.signal;
            var abortable = true;
            var unsubscribed = false;
            var subscription = new Subscription();
            subscription.add(function () {
                unsubscribed = true;
                if (abortable) {
                    controller.abort();
                }
            });
            var perSubscriberInit;
            if (init) {
                if (init.signal) {
                    if (init.signal.aborted) {
                        controller.abort();
                    }
                    else {
                        var outerSignal_1 = init.signal;
                        var outerSignalHandler_1 = function () {
                            if (!signal.aborted) {
                                controller.abort();
                            }
                        };
                        outerSignal_1.addEventListener('abort', outerSignalHandler_1);
                        subscription.add(function () { return outerSignal_1.removeEventListener('abort', outerSignalHandler_1); });
                    }
                }
                perSubscriberInit = __assign({}, init, { signal: signal });
            }
            else {
                perSubscriberInit = { signal: signal };
            }
            fetch(input, perSubscriberInit).then(function (response) {
                if (selector) {
                    subscription.add(from(selector(response)).subscribe(function (value) { return subscriber.next(value); }, function (err) {
                        abortable = false;
                        if (!unsubscribed) {
                            subscriber.error(err);
                        }
                    }, function () {
                        abortable = false;
                        subscriber.complete();
                    }));
                }
                else {
                    abortable = false;
                    subscriber.next(response);
                    subscriber.complete();
                }
            }).catch(function (err) {
                abortable = false;
                if (!unsubscribed) {
                    subscriber.error(err);
                }
            });
            return subscription;
        });
    }



    var _fetch = /*#__PURE__*/Object.freeze({
        fromFetch: fromFetch
    });

    var operators = _operators;
    var testing = _testing;
    var ajax$1 = _ajax;
    var webSocket$1 = _webSocket;
    var fetch$1 = _fetch;

    exports.operators = operators;
    exports.testing = testing;
    exports.ajax = ajax$1;
    exports.webSocket = webSocket$1;
    exports.fetch = fetch$1;
    exports.Observable = Observable;
    exports.ConnectableObservable = ConnectableObservable;
    exports.GroupedObservable = GroupedObservable;
    exports.observable = observable;
    exports.Subject = Subject;
    exports.BehaviorSubject = BehaviorSubject;
    exports.ReplaySubject = ReplaySubject;
    exports.AsyncSubject = AsyncSubject;
    exports.asap = asap;
    exports.asapScheduler = asapScheduler;
    exports.async = async;
    exports.asyncScheduler = asyncScheduler;
    exports.queue = queue;
    exports.queueScheduler = queueScheduler;
    exports.animationFrame = animationFrame;
    exports.animationFrameScheduler = animationFrameScheduler;
    exports.VirtualTimeScheduler = VirtualTimeScheduler;
    exports.VirtualAction = VirtualAction;
    exports.Scheduler = Scheduler;
    exports.Subscription = Subscription;
    exports.Subscriber = Subscriber;
    exports.Notification = Notification;
    exports.pipe = pipe;
    exports.noop = noop;
    exports.identity = identity;
    exports.isObservable = isObservable;
    exports.ArgumentOutOfRangeError = ArgumentOutOfRangeError;
    exports.EmptyError = EmptyError;
    exports.ObjectUnsubscribedError = ObjectUnsubscribedError;
    exports.UnsubscriptionError = UnsubscriptionError;
    exports.TimeoutError = TimeoutError;
    exports.bindCallback = bindCallback;
    exports.bindNodeCallback = bindNodeCallback;
    exports.combineLatest = combineLatest;
    exports.concat = concat;
    exports.defer = defer;
    exports.empty = empty$1;
    exports.forkJoin = forkJoin;
    exports.from = from;
    exports.fromEvent = fromEvent;
    exports.fromEventPattern = fromEventPattern;
    exports.generate = generate;
    exports.iif = iif;
    exports.interval = interval;
    exports.merge = merge;
    exports.never = never;
    exports.of = of;
    exports.onErrorResumeNext = onErrorResumeNext;
    exports.pairs = pairs;
    exports.partition = partition;
    exports.race = race;
    exports.range = range;
    exports.throwError = throwError;
    exports.timer = timer;
    exports.using = using;
    exports.zip = zip;
    exports.scheduled = scheduled;
    exports.EMPTY = EMPTY;
    exports.NEVER = NEVER;
    exports.config = config;

    Object.defineProperty(exports, '__esModule', { value: true });

})));
