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node_modules/rx/dist/rx.async.compat.js

@@ -0,0 +1,532 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx.binding', 'exports'], function (Rx, exports) {
+      root.Rx = factory(root, exports, Rx);
+      return root.Rx;
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('./rx'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  // Aliases
+  var Observable = Rx.Observable,
+    observableFromPromise = Observable.fromPromise,
+    observableThrow = Observable.throwError,
+    AnonymousObservable = Rx.AnonymousObservable,
+    ObservableBase = Rx.ObservableBase,
+    AsyncSubject = Rx.AsyncSubject,
+    disposableCreate = Rx.Disposable.create,
+    CompositeDisposable = Rx.CompositeDisposable,
+    immediateScheduler = Rx.Scheduler.immediate,
+    defaultScheduler = Rx.Scheduler['default'],
+    inherits = Rx.internals.inherits,
+    isScheduler = Rx.Scheduler.isScheduler,
+    isPromise = Rx.helpers.isPromise,
+    isFunction = Rx.helpers.isFunction,
+    isIterable = Rx.helpers.isIterable,
+    isArrayLike = Rx.helpers.isArrayLike;
+
+  var errorObj = {e: {}};
+  
+  function tryCatcherGen(tryCatchTarget) {
+    return function tryCatcher() {
+      try {
+        return tryCatchTarget.apply(this, arguments);
+      } catch (e) {
+        errorObj.e = e;
+        return errorObj;
+      }
+    };
+  }
+
+  var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
+    if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
+    return tryCatcherGen(fn);
+  };
+
+  function thrower(e) {
+    throw e;
+  }
+
+  Observable.wrap = function (fn) {
+    function createObservable() {
+      return Observable.spawn.call(this, fn.apply(this, arguments));
+    }
+
+    createObservable.__generatorFunction__ = fn;
+    return createObservable;
+  };
+
+  var spawn = Observable.spawn = function () {
+    var gen = arguments[0], self = this, args = [];
+    for (var i = 1, len = arguments.length; i < len; i++) { args.push(arguments[i]); }
+
+    return new AnonymousObservable(function (o) {
+      var g = new CompositeDisposable();
+
+      if (isFunction(gen)) { gen = gen.apply(self, args); }
+      if (!gen || !isFunction(gen.next)) {
+        o.onNext(gen);
+        return o.onCompleted();
+      }
+
+      function processGenerator(res) {
+        var ret = tryCatch(gen.next).call(gen, res);
+        if (ret === errorObj) { return o.onError(ret.e); }
+        next(ret);
+      }
+
+      processGenerator();
+
+      function onError(err) {
+        var ret = tryCatch(gen.next).call(gen, err);
+        if (ret === errorObj) { return o.onError(ret.e); }
+        next(ret);
+      }
+
+      function next(ret) {
+        if (ret.done) {
+          o.onNext(ret.value);
+          o.onCompleted();
+          return;
+        }
+        var obs = toObservable.call(self, ret.value);
+        var value = null;
+        var hasValue = false;
+        if (Observable.isObservable(obs)) {
+          g.add(obs.subscribe(function(val) {
+            hasValue = true;
+            value = val;
+          }, onError, function() {
+            hasValue && processGenerator(value);
+          }));
+        } else {
+          onError(new TypeError('type not supported'));
+        }
+      }
+
+      return g;
+    });
+  };
+
+  function toObservable(obj) {
+    if (!obj) { return obj; }
+    if (Observable.isObservable(obj)) { return obj; }
+    if (isPromise(obj)) { return Observable.fromPromise(obj); }
+    if (isGeneratorFunction(obj) || isGenerator(obj)) { return spawn.call(this, obj); }
+    if (isFunction(obj)) { return thunkToObservable.call(this, obj); }
+    if (isArrayLike(obj) || isIterable(obj)) { return arrayToObservable.call(this, obj); }
+    if (isObject(obj)) {return objectToObservable.call(this, obj);}
+    return obj;
+  }
+
+  function arrayToObservable (obj) {
+    return Observable.from(obj).concatMap(function(o) {
+      if(Observable.isObservable(o) || isObject(o)) {
+        return toObservable.call(null, o);
+      } else {
+        return Rx.Observable.just(o);
+      }
+    }).toArray();
+  }
+
+  function objectToObservable (obj) {
+    var results = new obj.constructor(), keys = Object.keys(obj), observables = [];
+    for (var i = 0, len = keys.length; i < len; i++) {
+      var key = keys[i];
+      var observable = toObservable.call(this, obj[key]);
+
+      if(observable && Observable.isObservable(observable)) {
+        defer(observable, key);
+      } else {
+        results[key] = obj[key];
+      }
+    }
+
+    return Observable.forkJoin.apply(Observable, observables).map(function() {
+      return results;
+    });
+
+
+    function defer (observable, key) {
+      results[key] = undefined;
+      observables.push(observable.map(function (next) {
+        results[key] = next;
+      }));
+    }
+  }
+
+  function thunkToObservable(fn) {
+    var self = this;
+    return new AnonymousObservable(function (o) {
+      fn.call(self, function () {
+        var err = arguments[0], res = arguments[1];
+        if (err) { return o.onError(err); }
+        if (arguments.length > 2) {
+          var args = [];
+          for (var i = 1, len = arguments.length; i < len; i++) { args.push(arguments[i]); }
+          res = args;
+        }
+        o.onNext(res);
+        o.onCompleted();
+      });
+    });
+  }
+
+  function isGenerator(obj) {
+    return isFunction (obj.next) && isFunction (obj['throw']);
+  }
+
+  function isGeneratorFunction(obj) {
+    var ctor = obj.constructor;
+    if (!ctor) { return false; }
+    if (ctor.name === 'GeneratorFunction' || ctor.displayName === 'GeneratorFunction') { return true; }
+    return isGenerator(ctor.prototype);
+  }
+
+  function isObject(val) {
+    return Object == val.constructor;
+  }
+
+  /**
+   * Invokes the specified function asynchronously on the specified scheduler, surfacing the result through an observable sequence.
+   *
+   * @example
+   * var res = Rx.Observable.start(function () { console.log('hello'); });
+   * var res = Rx.Observable.start(function () { console.log('hello'); }, Rx.Scheduler.timeout);
+   * var res = Rx.Observable.start(function () { this.log('hello'); }, Rx.Scheduler.timeout, console);
+   *
+   * @param {Function} func Function to run asynchronously.
+   * @param {Scheduler} [scheduler]  Scheduler to run the function on. If not specified, defaults to Scheduler.timeout.
+   * @param [context]  The context for the func parameter to be executed.  If not specified, defaults to undefined.
+   * @returns {Observable} An observable sequence exposing the function's result value, or an exception.
+   *
+   * Remarks
+   * * The function is called immediately, not during the subscription of the resulting sequence.
+   * * Multiple subscriptions to the resulting sequence can observe the function's result.
+   */
+  Observable.start = function (func, context, scheduler) {
+    return observableToAsync(func, context, scheduler)();
+  };
+
+  /**
+   * Converts the function into an asynchronous function. Each invocation of the resulting asynchronous function causes an invocation of the original synchronous function on the specified scheduler.
+   * @param {Function} function Function to convert to an asynchronous function.
+   * @param {Scheduler} [scheduler] Scheduler to run the function on. If not specified, defaults to Scheduler.timeout.
+   * @param {Mixed} [context] The context for the func parameter to be executed.  If not specified, defaults to undefined.
+   * @returns {Function} Asynchronous function.
+   */
+  var observableToAsync = Observable.toAsync = function (func, context, scheduler) {
+    isScheduler(scheduler) || (scheduler = defaultScheduler);
+    return function () {
+      var args = arguments,
+        subject = new AsyncSubject();
+
+      scheduler.schedule(null, function () {
+        var result;
+        try {
+          result = func.apply(context, args);
+        } catch (e) {
+          subject.onError(e);
+          return;
+        }
+        subject.onNext(result);
+        subject.onCompleted();
+      });
+      return subject.asObservable();
+    };
+  };
+
+function createCbObservable(fn, ctx, selector, args) {
+  var o = new AsyncSubject();
+
+  args.push(createCbHandler(o, ctx, selector));
+  fn.apply(ctx, args);
+
+  return o.asObservable();
+}
+
+function createCbHandler(o, ctx, selector) {
+  return function handler () {
+    var len = arguments.length, results = new Array(len);
+    for(var i = 0; i < len; i++) { results[i] = arguments[i]; }
+
+    if (isFunction(selector)) {
+      results = tryCatch(selector).apply(ctx, results);
+      if (results === errorObj) { return o.onError(results.e); }
+      o.onNext(results);
+    } else {
+      if (results.length <= 1) {
+        o.onNext(results[0]);
+      } else {
+        o.onNext(results);
+      }
+    }
+
+    o.onCompleted();
+  };
+}
+
+/**
+ * Converts a callback function to an observable sequence.
+ *
+ * @param {Function} fn Function with a callback as the last parameter to convert to an Observable sequence.
+ * @param {Mixed} [ctx] The context for the func parameter to be executed.  If not specified, defaults to undefined.
+ * @param {Function} [selector] A selector which takes the arguments from the callback to produce a single item to yield on next.
+ * @returns {Function} A function, when executed with the required parameters minus the callback, produces an Observable sequence with a single value of the arguments to the callback as an array.
+ */
+Observable.fromCallback = function (fn, ctx, selector) {
+  return function () {
+    typeof ctx === 'undefined' && (ctx = this); 
+
+    var len = arguments.length, args = new Array(len)
+    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
+    return createCbObservable(fn, ctx, selector, args);
+  };
+};
+
+function createNodeObservable(fn, ctx, selector, args) {
+  var o = new AsyncSubject();
+
+  args.push(createNodeHandler(o, ctx, selector));
+  fn.apply(ctx, args);
+
+  return o.asObservable();
+}
+
+function createNodeHandler(o, ctx, selector) {
+  return function handler () {
+    var err = arguments[0];
+    if (err) { return o.onError(err); }
+
+    var len = arguments.length, results = [];
+    for(var i = 1; i < len; i++) { results[i - 1] = arguments[i]; }
+
+    if (isFunction(selector)) {
+      var results = tryCatch(selector).apply(ctx, results);
+      if (results === errorObj) { return o.onError(results.e); }
+      o.onNext(results);
+    } else {
+      if (results.length <= 1) {
+        o.onNext(results[0]);
+      } else {
+        o.onNext(results);
+      }
+    }
+
+    o.onCompleted();
+  };
+}
+
+/**
+ * Converts a Node.js callback style function to an observable sequence.  This must be in function (err, ...) format.
+ * @param {Function} fn The function to call
+ * @param {Mixed} [ctx] The context for the func parameter to be executed.  If not specified, defaults to undefined.
+ * @param {Function} [selector] A selector which takes the arguments from the callback minus the error to produce a single item to yield on next.
+ * @returns {Function} An async function which when applied, returns an observable sequence with the callback arguments as an array.
+ */
+Observable.fromNodeCallback = function (fn, ctx, selector) {
+  return function () {
+    typeof ctx === 'undefined' && (ctx = this); 
+    var len = arguments.length, args = new Array(len);
+    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
+    return createNodeObservable(fn, ctx, selector, args);
+  };
+};
+
+  function isNodeList(el) {
+    if (root.StaticNodeList) {
+      // IE8 Specific
+      // instanceof is slower than Object#toString, but Object#toString will not work as intended in IE8
+      return el instanceof root.StaticNodeList || el instanceof root.NodeList;
+    } else {
+      return Object.prototype.toString.call(el) === '[object NodeList]';
+    }
+  }
+
+  function ListenDisposable(e, n, fn) {
+    this._e = e;
+    this._n = n;
+    this._fn = fn;
+    this._e.addEventListener(this._n, this._fn, false);
+    this.isDisposed = false;
+  }
+  ListenDisposable.prototype.dispose = function () {
+    if (!this.isDisposed) {
+      this._e.removeEventListener(this._n, this._fn, false);
+      this.isDisposed = true;
+    }
+  };
+
+  function createEventListener (el, eventName, handler) {
+    var disposables = new CompositeDisposable();
+
+    // Asume NodeList or HTMLCollection
+    var elemToString = Object.prototype.toString.call(el);
+    if (isNodeList(el) || elemToString === '[object HTMLCollection]') {
+      for (var i = 0, len = el.length; i < len; i++) {
+        disposables.add(createEventListener(el.item(i), eventName, handler));
+      }
+    } else if (el) {
+      disposables.add(new ListenDisposable(el, eventName, handler));
+    }
+
+    return disposables;
+  }
+
+  /**
+   * Configuration option to determine whether to use native events only
+   */
+  Rx.config.useNativeEvents = false;
+
+  var EventObservable = (function(__super__) {
+    inherits(EventObservable, __super__);
+    function EventObservable(el, name, fn) {
+      this._el = el;
+      this._n = name;
+      this._fn = fn;
+      __super__.call(this);
+    }
+
+    function createHandler(o, fn) {
+      return function handler () {
+        var results = arguments[0];
+        if (isFunction(fn)) {
+          results = tryCatch(fn).apply(null, arguments);
+          if (results === errorObj) { return o.onError(results.e); }
+        }
+        o.onNext(results);
+      };
+    }
+
+    EventObservable.prototype.subscribeCore = function (o) {
+      return createEventListener(
+        this._el,
+        this._n,
+        createHandler(o, this._fn));
+    };
+
+    return EventObservable;
+  }(ObservableBase));
+
+  /**
+   * Creates an observable sequence by adding an event listener to the matching DOMElement or each item in the NodeList.
+   * @param {Object} element The DOMElement or NodeList to attach a listener.
+   * @param {String} eventName The event name to attach the observable sequence.
+   * @param {Function} [selector] A selector which takes the arguments from the event handler to produce a single item to yield on next.
+   * @returns {Observable} An observable sequence of events from the specified element and the specified event.
+   */
+  Observable.fromEvent = function (element, eventName, selector) {
+    // Node.js specific
+    if (element.addListener) {
+      return fromEventPattern(
+        function (h) { element.addListener(eventName, h); },
+        function (h) { element.removeListener(eventName, h); },
+        selector);
+    }
+
+    // Use only if non-native events are allowed
+    if (!Rx.config.useNativeEvents) {
+      // Handles jq, Angular.js, Zepto, Marionette, Ember.js
+      if (typeof element.on === 'function' && typeof element.off === 'function') {
+        return fromEventPattern(
+          function (h) { element.on(eventName, h); },
+          function (h) { element.off(eventName, h); },
+          selector);
+      }
+    }
+
+    return new EventObservable(element, eventName, selector).publish().refCount();
+  };
+
+  var EventPatternObservable = (function(__super__) {
+    inherits(EventPatternObservable, __super__);
+    function EventPatternObservable(add, del, fn) {
+      this._add = add;
+      this._del = del;
+      this._fn = fn;
+      __super__.call(this);
+    }
+
+    function createHandler(o, fn) {
+      return function handler () {
+        var results = arguments[0];
+        if (isFunction(fn)) {
+          results = tryCatch(fn).apply(null, arguments);
+          if (results === errorObj) { return o.onError(results.e); }
+        }
+        o.onNext(results);
+      };
+    }
+
+    EventPatternObservable.prototype.subscribeCore = function (o) {
+      var fn = createHandler(o, this._fn);
+      var returnValue = this._add(fn);
+      return new EventPatternDisposable(this._del, fn, returnValue);
+    };
+
+    function EventPatternDisposable(del, fn, ret) {
+      this._del = del;
+      this._fn = fn;
+      this._ret = ret;
+      this.isDisposed = false;
+    }
+
+    EventPatternDisposable.prototype.dispose = function () {
+      if(!this.isDisposed) {
+        isFunction(this._del) && this._del(this._fn, this._ret);
+        this.isDisposed = true;
+      }
+    };
+
+    return EventPatternObservable;
+  }(ObservableBase));
+
+  /**
+   * Creates an observable sequence from an event emitter via an addHandler/removeHandler pair.
+   * @param {Function} addHandler The function to add a handler to the emitter.
+   * @param {Function} [removeHandler] The optional function to remove a handler from an emitter.
+   * @param {Function} [selector] A selector which takes the arguments from the event handler to produce a single item to yield on next.
+   * @returns {Observable} An observable sequence which wraps an event from an event emitter
+   */
+  var fromEventPattern = Observable.fromEventPattern = function (addHandler, removeHandler, selector) {
+    return new EventPatternObservable(addHandler, removeHandler, selector).publish().refCount();
+  };
+
+  /**
+   * Invokes the asynchronous function, surfacing the result through an observable sequence.
+   * @param {Function} functionAsync Asynchronous function which returns a Promise to run.
+   * @returns {Observable} An observable sequence exposing the function's result value, or an exception.
+   */
+  Observable.startAsync = function (functionAsync) {
+    var promise = tryCatch(functionAsync)();
+    if (promise === errorObj) { return observableThrow(promise.e); }
+    return observableFromPromise(promise);
+  };
+
+  return Rx;
+}));

node_modules/rx/dist/rx.async.js

@@ -0,0 +1,532 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx.binding', 'exports'], function (Rx, exports) {
+      root.Rx = factory(root, exports, Rx);
+      return root.Rx;
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('./rx'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  // Aliases
+  var Observable = Rx.Observable,
+    observableFromPromise = Observable.fromPromise,
+    observableThrow = Observable.throwError,
+    AnonymousObservable = Rx.AnonymousObservable,
+    ObservableBase = Rx.ObservableBase,
+    AsyncSubject = Rx.AsyncSubject,
+    disposableCreate = Rx.Disposable.create,
+    CompositeDisposable = Rx.CompositeDisposable,
+    immediateScheduler = Rx.Scheduler.immediate,
+    defaultScheduler = Rx.Scheduler['default'],
+    inherits = Rx.internals.inherits,
+    isScheduler = Rx.Scheduler.isScheduler,
+    isPromise = Rx.helpers.isPromise,
+    isFunction = Rx.helpers.isFunction,
+    isIterable = Rx.helpers.isIterable,
+    isArrayLike = Rx.helpers.isArrayLike;
+
+  var errorObj = {e: {}};
+  
+  function tryCatcherGen(tryCatchTarget) {
+    return function tryCatcher() {
+      try {
+        return tryCatchTarget.apply(this, arguments);
+      } catch (e) {
+        errorObj.e = e;
+        return errorObj;
+      }
+    };
+  }
+
+  var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
+    if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
+    return tryCatcherGen(fn);
+  };
+
+  function thrower(e) {
+    throw e;
+  }
+
+  Observable.wrap = function (fn) {
+    function createObservable() {
+      return Observable.spawn.call(this, fn.apply(this, arguments));
+    }
+
+    createObservable.__generatorFunction__ = fn;
+    return createObservable;
+  };
+
+  var spawn = Observable.spawn = function () {
+    var gen = arguments[0], self = this, args = [];
+    for (var i = 1, len = arguments.length; i < len; i++) { args.push(arguments[i]); }
+
+    return new AnonymousObservable(function (o) {
+      var g = new CompositeDisposable();
+
+      if (isFunction(gen)) { gen = gen.apply(self, args); }
+      if (!gen || !isFunction(gen.next)) {
+        o.onNext(gen);
+        return o.onCompleted();
+      }
+
+      function processGenerator(res) {
+        var ret = tryCatch(gen.next).call(gen, res);
+        if (ret === errorObj) { return o.onError(ret.e); }
+        next(ret);
+      }
+
+      processGenerator();
+
+      function onError(err) {
+        var ret = tryCatch(gen.next).call(gen, err);
+        if (ret === errorObj) { return o.onError(ret.e); }
+        next(ret);
+      }
+
+      function next(ret) {
+        if (ret.done) {
+          o.onNext(ret.value);
+          o.onCompleted();
+          return;
+        }
+        var obs = toObservable.call(self, ret.value);
+        var value = null;
+        var hasValue = false;
+        if (Observable.isObservable(obs)) {
+          g.add(obs.subscribe(function(val) {
+            hasValue = true;
+            value = val;
+          }, onError, function() {
+            hasValue && processGenerator(value);
+          }));
+        } else {
+          onError(new TypeError('type not supported'));
+        }
+      }
+
+      return g;
+    });
+  };
+
+  function toObservable(obj) {
+    if (!obj) { return obj; }
+    if (Observable.isObservable(obj)) { return obj; }
+    if (isPromise(obj)) { return Observable.fromPromise(obj); }
+    if (isGeneratorFunction(obj) || isGenerator(obj)) { return spawn.call(this, obj); }
+    if (isFunction(obj)) { return thunkToObservable.call(this, obj); }
+    if (isArrayLike(obj) || isIterable(obj)) { return arrayToObservable.call(this, obj); }
+    if (isObject(obj)) {return objectToObservable.call(this, obj);}
+    return obj;
+  }
+
+  function arrayToObservable (obj) {
+    return Observable.from(obj).concatMap(function(o) {
+      if(Observable.isObservable(o) || isObject(o)) {
+        return toObservable.call(null, o);
+      } else {
+        return Rx.Observable.just(o);
+      }
+    }).toArray();
+  }
+
+  function objectToObservable (obj) {
+    var results = new obj.constructor(), keys = Object.keys(obj), observables = [];
+    for (var i = 0, len = keys.length; i < len; i++) {
+      var key = keys[i];
+      var observable = toObservable.call(this, obj[key]);
+
+      if(observable && Observable.isObservable(observable)) {
+        defer(observable, key);
+      } else {
+        results[key] = obj[key];
+      }
+    }
+
+    return Observable.forkJoin.apply(Observable, observables).map(function() {
+      return results;
+    });
+
+
+    function defer (observable, key) {
+      results[key] = undefined;
+      observables.push(observable.map(function (next) {
+        results[key] = next;
+      }));
+    }
+  }
+
+  function thunkToObservable(fn) {
+    var self = this;
+    return new AnonymousObservable(function (o) {
+      fn.call(self, function () {
+        var err = arguments[0], res = arguments[1];
+        if (err) { return o.onError(err); }
+        if (arguments.length > 2) {
+          var args = [];
+          for (var i = 1, len = arguments.length; i < len; i++) { args.push(arguments[i]); }
+          res = args;
+        }
+        o.onNext(res);
+        o.onCompleted();
+      });
+    });
+  }
+
+  function isGenerator(obj) {
+    return isFunction (obj.next) && isFunction (obj['throw']);
+  }
+
+  function isGeneratorFunction(obj) {
+    var ctor = obj.constructor;
+    if (!ctor) { return false; }
+    if (ctor.name === 'GeneratorFunction' || ctor.displayName === 'GeneratorFunction') { return true; }
+    return isGenerator(ctor.prototype);
+  }
+
+  function isObject(val) {
+    return Object == val.constructor;
+  }
+
+  /**
+   * Invokes the specified function asynchronously on the specified scheduler, surfacing the result through an observable sequence.
+   *
+   * @example
+   * var res = Rx.Observable.start(function () { console.log('hello'); });
+   * var res = Rx.Observable.start(function () { console.log('hello'); }, Rx.Scheduler.timeout);
+   * var res = Rx.Observable.start(function () { this.log('hello'); }, Rx.Scheduler.timeout, console);
+   *
+   * @param {Function} func Function to run asynchronously.
+   * @param {Scheduler} [scheduler]  Scheduler to run the function on. If not specified, defaults to Scheduler.timeout.
+   * @param [context]  The context for the func parameter to be executed.  If not specified, defaults to undefined.
+   * @returns {Observable} An observable sequence exposing the function's result value, or an exception.
+   *
+   * Remarks
+   * * The function is called immediately, not during the subscription of the resulting sequence.
+   * * Multiple subscriptions to the resulting sequence can observe the function's result.
+   */
+  Observable.start = function (func, context, scheduler) {
+    return observableToAsync(func, context, scheduler)();
+  };
+
+  /**
+   * Converts the function into an asynchronous function. Each invocation of the resulting asynchronous function causes an invocation of the original synchronous function on the specified scheduler.
+   * @param {Function} function Function to convert to an asynchronous function.
+   * @param {Scheduler} [scheduler] Scheduler to run the function on. If not specified, defaults to Scheduler.timeout.
+   * @param {Mixed} [context] The context for the func parameter to be executed.  If not specified, defaults to undefined.
+   * @returns {Function} Asynchronous function.
+   */
+  var observableToAsync = Observable.toAsync = function (func, context, scheduler) {
+    isScheduler(scheduler) || (scheduler = defaultScheduler);
+    return function () {
+      var args = arguments,
+        subject = new AsyncSubject();
+
+      scheduler.schedule(null, function () {
+        var result;
+        try {
+          result = func.apply(context, args);
+        } catch (e) {
+          subject.onError(e);
+          return;
+        }
+        subject.onNext(result);
+        subject.onCompleted();
+      });
+      return subject.asObservable();
+    };
+  };
+
+function createCbObservable(fn, ctx, selector, args) {
+  var o = new AsyncSubject();
+
+  args.push(createCbHandler(o, ctx, selector));
+  fn.apply(ctx, args);
+
+  return o.asObservable();
+}
+
+function createCbHandler(o, ctx, selector) {
+  return function handler () {
+    var len = arguments.length, results = new Array(len);
+    for(var i = 0; i < len; i++) { results[i] = arguments[i]; }
+
+    if (isFunction(selector)) {
+      results = tryCatch(selector).apply(ctx, results);
+      if (results === errorObj) { return o.onError(results.e); }
+      o.onNext(results);
+    } else {
+      if (results.length <= 1) {
+        o.onNext(results[0]);
+      } else {
+        o.onNext(results);
+      }
+    }
+
+    o.onCompleted();
+  };
+}
+
+/**
+ * Converts a callback function to an observable sequence.
+ *
+ * @param {Function} fn Function with a callback as the last parameter to convert to an Observable sequence.
+ * @param {Mixed} [ctx] The context for the func parameter to be executed.  If not specified, defaults to undefined.
+ * @param {Function} [selector] A selector which takes the arguments from the callback to produce a single item to yield on next.
+ * @returns {Function} A function, when executed with the required parameters minus the callback, produces an Observable sequence with a single value of the arguments to the callback as an array.
+ */
+Observable.fromCallback = function (fn, ctx, selector) {
+  return function () {
+    typeof ctx === 'undefined' && (ctx = this); 
+
+    var len = arguments.length, args = new Array(len)
+    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
+    return createCbObservable(fn, ctx, selector, args);
+  };
+};
+
+function createNodeObservable(fn, ctx, selector, args) {
+  var o = new AsyncSubject();
+
+  args.push(createNodeHandler(o, ctx, selector));
+  fn.apply(ctx, args);
+
+  return o.asObservable();
+}
+
+function createNodeHandler(o, ctx, selector) {
+  return function handler () {
+    var err = arguments[0];
+    if (err) { return o.onError(err); }
+
+    var len = arguments.length, results = [];
+    for(var i = 1; i < len; i++) { results[i - 1] = arguments[i]; }
+
+    if (isFunction(selector)) {
+      var results = tryCatch(selector).apply(ctx, results);
+      if (results === errorObj) { return o.onError(results.e); }
+      o.onNext(results);
+    } else {
+      if (results.length <= 1) {
+        o.onNext(results[0]);
+      } else {
+        o.onNext(results);
+      }
+    }
+
+    o.onCompleted();
+  };
+}
+
+/**
+ * Converts a Node.js callback style function to an observable sequence.  This must be in function (err, ...) format.
+ * @param {Function} fn The function to call
+ * @param {Mixed} [ctx] The context for the func parameter to be executed.  If not specified, defaults to undefined.
+ * @param {Function} [selector] A selector which takes the arguments from the callback minus the error to produce a single item to yield on next.
+ * @returns {Function} An async function which when applied, returns an observable sequence with the callback arguments as an array.
+ */
+Observable.fromNodeCallback = function (fn, ctx, selector) {
+  return function () {
+    typeof ctx === 'undefined' && (ctx = this); 
+    var len = arguments.length, args = new Array(len);
+    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
+    return createNodeObservable(fn, ctx, selector, args);
+  };
+};
+
+  function isNodeList(el) {
+    if (root.StaticNodeList) {
+      // IE8 Specific
+      // instanceof is slower than Object#toString, but Object#toString will not work as intended in IE8
+      return el instanceof root.StaticNodeList || el instanceof root.NodeList;
+    } else {
+      return Object.prototype.toString.call(el) === '[object NodeList]';
+    }
+  }
+
+  function ListenDisposable(e, n, fn) {
+    this._e = e;
+    this._n = n;
+    this._fn = fn;
+    this._e.addEventListener(this._n, this._fn, false);
+    this.isDisposed = false;
+  }
+  ListenDisposable.prototype.dispose = function () {
+    if (!this.isDisposed) {
+      this._e.removeEventListener(this._n, this._fn, false);
+      this.isDisposed = true;
+    }
+  };
+
+  function createEventListener (el, eventName, handler) {
+    var disposables = new CompositeDisposable();
+
+    // Asume NodeList or HTMLCollection
+    var elemToString = Object.prototype.toString.call(el);
+    if (isNodeList(el) || elemToString === '[object HTMLCollection]') {
+      for (var i = 0, len = el.length; i < len; i++) {
+        disposables.add(createEventListener(el.item(i), eventName, handler));
+      }
+    } else if (el) {
+      disposables.add(new ListenDisposable(el, eventName, handler));
+    }
+
+    return disposables;
+  }
+
+  /**
+   * Configuration option to determine whether to use native events only
+   */
+  Rx.config.useNativeEvents = false;
+
+  var EventObservable = (function(__super__) {
+    inherits(EventObservable, __super__);
+    function EventObservable(el, name, fn) {
+      this._el = el;
+      this._n = name;
+      this._fn = fn;
+      __super__.call(this);
+    }
+
+    function createHandler(o, fn) {
+      return function handler () {
+        var results = arguments[0];
+        if (isFunction(fn)) {
+          results = tryCatch(fn).apply(null, arguments);
+          if (results === errorObj) { return o.onError(results.e); }
+        }
+        o.onNext(results);
+      };
+    }
+
+    EventObservable.prototype.subscribeCore = function (o) {
+      return createEventListener(
+        this._el,
+        this._n,
+        createHandler(o, this._fn));
+    };
+
+    return EventObservable;
+  }(ObservableBase));
+
+  /**
+   * Creates an observable sequence by adding an event listener to the matching DOMElement or each item in the NodeList.
+   * @param {Object} element The DOMElement or NodeList to attach a listener.
+   * @param {String} eventName The event name to attach the observable sequence.
+   * @param {Function} [selector] A selector which takes the arguments from the event handler to produce a single item to yield on next.
+   * @returns {Observable} An observable sequence of events from the specified element and the specified event.
+   */
+  Observable.fromEvent = function (element, eventName, selector) {
+    // Node.js specific
+    if (element.addListener) {
+      return fromEventPattern(
+        function (h) { element.addListener(eventName, h); },
+        function (h) { element.removeListener(eventName, h); },
+        selector);
+    }
+
+    // Use only if non-native events are allowed
+    if (!Rx.config.useNativeEvents) {
+      // Handles jq, Angular.js, Zepto, Marionette, Ember.js
+      if (typeof element.on === 'function' && typeof element.off === 'function') {
+        return fromEventPattern(
+          function (h) { element.on(eventName, h); },
+          function (h) { element.off(eventName, h); },
+          selector);
+      }
+    }
+
+    return new EventObservable(element, eventName, selector).publish().refCount();
+  };
+
+  var EventPatternObservable = (function(__super__) {
+    inherits(EventPatternObservable, __super__);
+    function EventPatternObservable(add, del, fn) {
+      this._add = add;
+      this._del = del;
+      this._fn = fn;
+      __super__.call(this);
+    }
+
+    function createHandler(o, fn) {
+      return function handler () {
+        var results = arguments[0];
+        if (isFunction(fn)) {
+          results = tryCatch(fn).apply(null, arguments);
+          if (results === errorObj) { return o.onError(results.e); }
+        }
+        o.onNext(results);
+      };
+    }
+
+    EventPatternObservable.prototype.subscribeCore = function (o) {
+      var fn = createHandler(o, this._fn);
+      var returnValue = this._add(fn);
+      return new EventPatternDisposable(this._del, fn, returnValue);
+    };
+
+    function EventPatternDisposable(del, fn, ret) {
+      this._del = del;
+      this._fn = fn;
+      this._ret = ret;
+      this.isDisposed = false;
+    }
+
+    EventPatternDisposable.prototype.dispose = function () {
+      if(!this.isDisposed) {
+        isFunction(this._del) && this._del(this._fn, this._ret);
+        this.isDisposed = true;
+      }
+    };
+
+    return EventPatternObservable;
+  }(ObservableBase));
+
+  /**
+   * Creates an observable sequence from an event emitter via an addHandler/removeHandler pair.
+   * @param {Function} addHandler The function to add a handler to the emitter.
+   * @param {Function} [removeHandler] The optional function to remove a handler from an emitter.
+   * @param {Function} [selector] A selector which takes the arguments from the event handler to produce a single item to yield on next.
+   * @returns {Observable} An observable sequence which wraps an event from an event emitter
+   */
+  var fromEventPattern = Observable.fromEventPattern = function (addHandler, removeHandler, selector) {
+    return new EventPatternObservable(addHandler, removeHandler, selector).publish().refCount();
+  };
+
+  /**
+   * Invokes the asynchronous function, surfacing the result through an observable sequence.
+   * @param {Function} functionAsync Asynchronous function which returns a Promise to run.
+   * @returns {Observable} An observable sequence exposing the function's result value, or an exception.
+   */
+  Observable.startAsync = function (functionAsync) {
+    var promise = tryCatch(functionAsync)();
+    if (promise === errorObj) { return observableThrow(promise.e); }
+    return observableFromPromise(promise);
+  };
+
+  return Rx;
+}));

node_modules/rx/dist/rx.backpressure.js

@@ -0,0 +1,616 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx'], function (Rx, exports) {
+      return factory(root, exports, Rx);
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('./rx'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  // References
+  var Observable = Rx.Observable,
+    observableProto = Observable.prototype,
+    AnonymousObservable = Rx.AnonymousObservable,
+    AbstractObserver = Rx.internals.AbstractObserver,
+    CompositeDisposable = Rx.CompositeDisposable,
+    BinaryDisposable = Rx.BinaryDisposable,
+    NAryDisposable = Rx.NAryDisposable,
+    Notification = Rx.Notification,
+    Subject = Rx.Subject,
+    Observer = Rx.Observer,
+    disposableEmpty = Rx.Disposable.empty,
+    disposableCreate = Rx.Disposable.create,
+    inherits = Rx.internals.inherits,
+    addProperties = Rx.internals.addProperties,
+    defaultScheduler = Rx.Scheduler['default'],
+    currentThreadScheduler = Rx.Scheduler.currentThread,
+    identity = Rx.helpers.identity,
+    isScheduler = Rx.Scheduler.isScheduler,
+    isFunction = Rx.helpers.isFunction,
+    checkDisposed = Rx.Disposable.checkDisposed;
+
+  var errorObj = {e: {}};
+  
+  function tryCatcherGen(tryCatchTarget) {
+    return function tryCatcher() {
+      try {
+        return tryCatchTarget.apply(this, arguments);
+      } catch (e) {
+        errorObj.e = e;
+        return errorObj;
+      }
+    };
+  }
+
+  var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
+    if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
+    return tryCatcherGen(fn);
+  };
+
+  function thrower(e) {
+    throw e;
+  }
+
+  /**
+  * Used to pause and resume streams.
+  */
+  Rx.Pauser = (function (__super__) {
+    inherits(Pauser, __super__);
+    function Pauser() {
+      __super__.call(this);
+    }
+
+    /**
+     * Pauses the underlying sequence.
+     */
+    Pauser.prototype.pause = function () { this.onNext(false); };
+
+    /**
+    * Resumes the underlying sequence.
+    */
+    Pauser.prototype.resume = function () { this.onNext(true); };
+
+    return Pauser;
+  }(Subject));
+
+  var PausableObservable = (function (__super__) {
+    inherits(PausableObservable, __super__);
+    function PausableObservable(source, pauser) {
+      this.source = source;
+      this.controller = new Subject();
+      this.paused = true;
+
+      if (pauser && pauser.subscribe) {
+        this.pauser = this.controller.merge(pauser);
+      } else {
+        this.pauser = this.controller;
+      }
+
+      __super__.call(this);
+    }
+
+    PausableObservable.prototype._subscribe = function (o) {
+      var conn = this.source.publish(),
+        subscription = conn.subscribe(o),
+        connection = disposableEmpty;
+
+      var pausable = this.pauser.startWith(!this.paused).distinctUntilChanged().subscribe(function (b) {
+        if (b) {
+          connection = conn.connect();
+        } else {
+          connection.dispose();
+          connection = disposableEmpty;
+        }
+      });
+
+      return new NAryDisposable([subscription, connection, pausable]);
+    };
+
+    PausableObservable.prototype.pause = function () {
+      this.paused = true;
+      this.controller.onNext(false);
+    };
+
+    PausableObservable.prototype.resume = function () {
+      this.paused = false;
+      this.controller.onNext(true);
+    };
+
+    return PausableObservable;
+
+  }(Observable));
+
+  /**
+   * Pauses the underlying observable sequence based upon the observable sequence which yields true/false.
+   * @example
+   * var pauser = new Rx.Subject();
+   * var source = Rx.Observable.interval(100).pausable(pauser);
+   * @param {Observable} pauser The observable sequence used to pause the underlying sequence.
+   * @returns {Observable} The observable sequence which is paused based upon the pauser.
+   */
+  observableProto.pausable = function (pauser) {
+    return new PausableObservable(this, pauser);
+  };
+
+  function combineLatestSource(source, subject, resultSelector) {
+    return new AnonymousObservable(function (o) {
+      var hasValue = [false, false],
+        hasValueAll = false,
+        isDone = false,
+        values = new Array(2),
+        err;
+
+      function next(x, i) {
+        values[i] = x;
+        hasValue[i] = true;
+        if (hasValueAll || (hasValueAll = hasValue.every(identity))) {
+          if (err) { return o.onError(err); }
+          var res = tryCatch(resultSelector).apply(null, values);
+          if (res === errorObj) { return o.onError(res.e); }
+          o.onNext(res);
+        }
+        isDone && values[1] && o.onCompleted();
+      }
+
+      return new BinaryDisposable(
+        source.subscribe(
+          function (x) {
+            next(x, 0);
+          },
+          function (e) {
+            if (values[1]) {
+              o.onError(e);
+            } else {
+              err = e;
+            }
+          },
+          function () {
+            isDone = true;
+            values[1] && o.onCompleted();
+          }),
+        subject.subscribe(
+          function (x) {
+            next(x, 1);
+          },
+          function (e) { o.onError(e); },
+          function () {
+            isDone = true;
+            next(true, 1);
+          })
+        );
+    }, source);
+  }
+
+  var PausableBufferedObservable = (function (__super__) {
+    inherits(PausableBufferedObservable, __super__);
+    function PausableBufferedObservable(source, pauser) {
+      this.source = source;
+      this.controller = new Subject();
+      this.paused = true;
+
+      if (pauser && pauser.subscribe) {
+        this.pauser = this.controller.merge(pauser);
+      } else {
+        this.pauser = this.controller;
+      }
+
+      __super__.call(this);
+    }
+
+    PausableBufferedObservable.prototype._subscribe = function (o) {
+      var q = [], previousShouldFire;
+
+      function drainQueue() { while (q.length > 0) { o.onNext(q.shift()); } }
+
+      var subscription =
+        combineLatestSource(
+          this.source,
+          this.pauser.startWith(!this.paused).distinctUntilChanged(),
+          function (data, shouldFire) {
+            return { data: data, shouldFire: shouldFire };
+          })
+          .subscribe(
+            function (results) {
+              if (previousShouldFire !== undefined && results.shouldFire !== previousShouldFire) {
+                previousShouldFire = results.shouldFire;
+                // change in shouldFire
+                if (results.shouldFire) { drainQueue(); }
+              } else {
+                previousShouldFire = results.shouldFire;
+                // new data
+                if (results.shouldFire) {
+                  o.onNext(results.data);
+                } else {
+                  q.push(results.data);
+                }
+              }
+            },
+            function (err) {
+              drainQueue();
+              o.onError(err);
+            },
+            function () {
+              drainQueue();
+              o.onCompleted();
+            }
+          );
+      return subscription;      
+    };
+
+    PausableBufferedObservable.prototype.pause = function () {
+      this.paused = true;
+      this.controller.onNext(false);
+    };
+
+    PausableBufferedObservable.prototype.resume = function () {
+      this.paused = false;
+      this.controller.onNext(true);
+    };
+
+    return PausableBufferedObservable;
+
+  }(Observable));
+
+  /**
+   * Pauses the underlying observable sequence based upon the observable sequence which yields true/false,
+   * and yields the values that were buffered while paused.
+   * @example
+   * var pauser = new Rx.Subject();
+   * var source = Rx.Observable.interval(100).pausableBuffered(pauser);
+   * @param {Observable} pauser The observable sequence used to pause the underlying sequence.
+   * @returns {Observable} The observable sequence which is paused based upon the pauser.
+   */
+  observableProto.pausableBuffered = function (pauser) {
+    return new PausableBufferedObservable(this, pauser);
+  };
+
+  var ControlledObservable = (function (__super__) {
+    inherits(ControlledObservable, __super__);
+    function ControlledObservable (source, enableQueue, scheduler) {
+      __super__.call(this);
+      this.subject = new ControlledSubject(enableQueue, scheduler);
+      this.source = source.multicast(this.subject).refCount();
+    }
+
+    ControlledObservable.prototype._subscribe = function (o) {
+      return this.source.subscribe(o);
+    };
+
+    ControlledObservable.prototype.request = function (numberOfItems) {
+      return this.subject.request(numberOfItems == null ? -1 : numberOfItems);
+    };
+
+    return ControlledObservable;
+
+  }(Observable));
+
+  var ControlledSubject = (function (__super__) {
+    inherits(ControlledSubject, __super__);
+    function ControlledSubject(enableQueue, scheduler) {
+      enableQueue == null && (enableQueue = true);
+
+      __super__.call(this);
+      this.subject = new Subject();
+      this.enableQueue = enableQueue;
+      this.queue = enableQueue ? [] : null;
+      this.requestedCount = 0;
+      this.requestedDisposable = null;
+      this.error = null;
+      this.hasFailed = false;
+      this.hasCompleted = false;
+      this.scheduler = scheduler || currentThreadScheduler;
+    }
+
+    addProperties(ControlledSubject.prototype, Observer, {
+      _subscribe: function (o) {
+        return this.subject.subscribe(o);
+      },
+      onCompleted: function () {
+        this.hasCompleted = true;
+        if (!this.enableQueue || this.queue.length === 0) {
+          this.subject.onCompleted();
+          this.disposeCurrentRequest();
+        } else {
+          this.queue.push(Notification.createOnCompleted());
+        }
+      },
+      onError: function (error) {
+        this.hasFailed = true;
+        this.error = error;
+        if (!this.enableQueue || this.queue.length === 0) {
+          this.subject.onError(error);
+          this.disposeCurrentRequest();
+        } else {
+          this.queue.push(Notification.createOnError(error));
+        }
+      },
+      onNext: function (value) {
+        if (this.requestedCount <= 0) {
+          this.enableQueue && this.queue.push(Notification.createOnNext(value));
+        } else {
+          (this.requestedCount-- === 0) && this.disposeCurrentRequest();
+          this.subject.onNext(value);
+        }
+      },
+      _processRequest: function (numberOfItems) {
+        if (this.enableQueue) {
+          while (this.queue.length > 0 && (numberOfItems > 0 || this.queue[0].kind !== 'N')) {
+            var first = this.queue.shift();
+            first.accept(this.subject);
+            if (first.kind === 'N') {
+              numberOfItems--;
+            } else {
+              this.disposeCurrentRequest();
+              this.queue = [];
+            }
+          }
+        }
+
+        return numberOfItems;
+      },
+      request: function (number) {
+        this.disposeCurrentRequest();
+        var self = this;
+
+        this.requestedDisposable = this.scheduler.schedule(number,
+        function(s, i) {
+          var remaining = self._processRequest(i);
+          var stopped = self.hasCompleted || self.hasFailed;
+          if (!stopped && remaining > 0) {
+            self.requestedCount = remaining;
+
+            return disposableCreate(function () {
+              self.requestedCount = 0;
+            });
+              // Scheduled item is still in progress. Return a new
+              // disposable to allow the request to be interrupted
+              // via dispose.
+          }
+        });
+
+        return this.requestedDisposable;
+      },
+      disposeCurrentRequest: function () {
+        if (this.requestedDisposable) {
+          this.requestedDisposable.dispose();
+          this.requestedDisposable = null;
+        }
+      }
+    });
+
+    return ControlledSubject;
+  }(Observable));
+
+  /**
+   * Attaches a controller to the observable sequence with the ability to queue.
+   * @example
+   * var source = Rx.Observable.interval(100).controlled();
+   * source.request(3); // Reads 3 values
+   * @param {bool} enableQueue truthy value to determine if values should be queued pending the next request
+   * @param {Scheduler} scheduler determines how the requests will be scheduled
+   * @returns {Observable} The observable sequence which only propagates values on request.
+   */
+  observableProto.controlled = function (enableQueue, scheduler) {
+
+    if (enableQueue && isScheduler(enableQueue)) {
+      scheduler = enableQueue;
+      enableQueue = true;
+    }
+
+    if (enableQueue == null) {  enableQueue = true; }
+    return new ControlledObservable(this, enableQueue, scheduler);
+  };
+
+  var StopAndWaitObservable = (function (__super__) {
+    inherits(StopAndWaitObservable, __super__);
+    function StopAndWaitObservable (source) {
+      __super__.call(this);
+      this.source = source;
+    }
+
+    function scheduleMethod(s, self) {
+      return self.source.request(1);
+    }
+
+    StopAndWaitObservable.prototype._subscribe = function (o) {
+      this.subscription = this.source.subscribe(new StopAndWaitObserver(o, this, this.subscription));
+      return new BinaryDisposable(
+        this.subscription,
+        defaultScheduler.schedule(this, scheduleMethod)
+      );
+    };
+
+    var StopAndWaitObserver = (function (__sub__) {
+      inherits(StopAndWaitObserver, __sub__);
+      function StopAndWaitObserver (observer, observable, cancel) {
+        __sub__.call(this);
+        this.observer = observer;
+        this.observable = observable;
+        this.cancel = cancel;
+        this.scheduleDisposable = null;
+      }
+
+      StopAndWaitObserver.prototype.completed = function () {
+        this.observer.onCompleted();
+        this.dispose();
+      };
+
+      StopAndWaitObserver.prototype.error = function (error) {
+        this.observer.onError(error);
+        this.dispose();
+      };
+
+      function innerScheduleMethod(s, self) {
+        return self.observable.source.request(1);
+      }
+
+      StopAndWaitObserver.prototype.next = function (value) {
+        this.observer.onNext(value);
+        this.scheduleDisposable = defaultScheduler.schedule(this, innerScheduleMethod);
+      };
+
+      StopAndWaitObserver.dispose = function () {
+        this.observer = null;
+        if (this.cancel) {
+          this.cancel.dispose();
+          this.cancel = null;
+        }
+        if (this.scheduleDisposable) {
+          this.scheduleDisposable.dispose();
+          this.scheduleDisposable = null;
+        }
+        __sub__.prototype.dispose.call(this);
+      };
+
+      return StopAndWaitObserver;
+    }(AbstractObserver));
+
+    return StopAndWaitObservable;
+  }(Observable));
+
+
+  /**
+   * Attaches a stop and wait observable to the current observable.
+   * @returns {Observable} A stop and wait observable.
+   */
+  ControlledObservable.prototype.stopAndWait = function () {
+    return new StopAndWaitObservable(this);
+  };
+
+  var WindowedObservable = (function (__super__) {
+    inherits(WindowedObservable, __super__);
+    function WindowedObservable(source, windowSize) {
+      __super__.call(this);
+      this.source = source;
+      this.windowSize = windowSize;
+    }
+
+    function scheduleMethod(s, self) {
+      return self.source.request(self.windowSize);
+    }
+
+    WindowedObservable.prototype._subscribe = function (o) {
+      this.subscription = this.source.subscribe(new WindowedObserver(o, this, this.subscription));
+      return new BinaryDisposable(
+        this.subscription,
+        defaultScheduler.schedule(this, scheduleMethod)
+      );
+    };
+
+    var WindowedObserver = (function (__sub__) {
+      inherits(WindowedObserver, __sub__);
+      function WindowedObserver(observer, observable, cancel) {
+        this.observer = observer;
+        this.observable = observable;
+        this.cancel = cancel;
+        this.received = 0;
+        this.scheduleDisposable = null;
+        __sub__.call(this);
+      }
+
+      WindowedObserver.prototype.completed = function () {
+        this.observer.onCompleted();
+        this.dispose();
+      };
+
+      WindowedObserver.prototype.error = function (error) {
+        this.observer.onError(error);
+        this.dispose();
+      };
+
+      function innerScheduleMethod(s, self) {
+        return self.observable.source.request(self.observable.windowSize);
+      }
+
+      WindowedObserver.prototype.next = function (value) {
+        this.observer.onNext(value);
+        this.received = ++this.received % this.observable.windowSize;
+        this.received === 0 && (this.scheduleDisposable = defaultScheduler.schedule(this, innerScheduleMethod));
+      };
+
+      WindowedObserver.prototype.dispose = function () {
+        this.observer = null;
+        if (this.cancel) {
+          this.cancel.dispose();
+          this.cancel = null;
+        }
+        if (this.scheduleDisposable) {
+          this.scheduleDisposable.dispose();
+          this.scheduleDisposable = null;
+        }
+        __sub__.prototype.dispose.call(this);
+      };
+
+      return WindowedObserver;
+    }(AbstractObserver));
+
+    return WindowedObservable;
+  }(Observable));
+
+  /**
+   * Creates a sliding windowed observable based upon the window size.
+   * @param {Number} windowSize The number of items in the window
+   * @returns {Observable} A windowed observable based upon the window size.
+   */
+  ControlledObservable.prototype.windowed = function (windowSize) {
+    return new WindowedObservable(this, windowSize);
+  };
+
+  /**
+   * Pipes the existing Observable sequence into a Node.js Stream.
+   * @param {Stream} dest The destination Node.js stream.
+   * @returns {Stream} The destination stream.
+   */
+  observableProto.pipe = function (dest) {
+    var source = this.pausableBuffered();
+
+    function onDrain() {
+      source.resume();
+    }
+
+    dest.addListener('drain', onDrain);
+
+    source.subscribe(
+      function (x) {
+        !dest.write(x) && source.pause();
+      },
+      function (err) {
+        dest.emit('error', err);
+      },
+      function () {
+        // Hack check because STDIO is not closable
+        !dest._isStdio && dest.end();
+        dest.removeListener('drain', onDrain);
+      });
+
+    source.resume();
+
+    return dest;
+  };
+
+  return Rx;
+}));

node_modules/rx/dist/rx.binding.js

@@ -0,0 +1,561 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx'], function (Rx, exports) {
+      return factory(root, exports, Rx);
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('./rx'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  var Observable = Rx.Observable,
+    observableProto = Observable.prototype,
+    AnonymousObservable = Rx.AnonymousObservable,
+    ObservableBase = Rx.ObservableBase,
+    Subject = Rx.Subject,
+    AsyncSubject = Rx.AsyncSubject,
+    Observer = Rx.Observer,
+    ScheduledObserver = Rx.internals.ScheduledObserver,
+    disposableCreate = Rx.Disposable.create,
+    disposableEmpty = Rx.Disposable.empty,
+    BinaryDisposable = Rx.BinaryDisposable,
+    currentThreadScheduler = Rx.Scheduler.currentThread,
+    isFunction = Rx.helpers.isFunction,
+    inherits = Rx.internals.inherits,
+    addProperties = Rx.internals.addProperties,
+    checkDisposed = Rx.Disposable.checkDisposed;
+
+  // Utilities
+  function cloneArray(arr) {
+    var len = arr.length, a = new Array(len);
+    for(var i = 0; i < len; i++) { a[i] = arr[i]; }
+    return a;
+  }
+
+  var MulticastObservable = (function (__super__) {
+    inherits(MulticastObservable, __super__);
+    function MulticastObservable(source, fn1, fn2) {
+      this.source = source;
+      this._fn1 = fn1;
+      this._fn2 = fn2;
+      __super__.call(this);
+    }
+
+    MulticastObservable.prototype.subscribeCore = function (o) {
+      var connectable = this.source.multicast(this._fn1());
+      return new BinaryDisposable(this._fn2(connectable).subscribe(o), connectable.connect());
+    };
+
+    return MulticastObservable;
+  }(ObservableBase));
+
+  /**
+   * Multicasts the source sequence notifications through an instantiated subject into all uses of the sequence within a selector function. Each
+   * subscription to the resulting sequence causes a separate multicast invocation, exposing the sequence resulting from the selector function's
+   * invocation. For specializations with fixed subject types, see Publish, PublishLast, and Replay.
+   *
+   * @example
+   * 1 - res = source.multicast(observable);
+   * 2 - res = source.multicast(function () { return new Subject(); }, function (x) { return x; });
+   *
+   * @param {Function|Subject} subjectOrSubjectSelector
+   * Factory function to create an intermediate subject through which the source sequence's elements will be multicast to the selector function.
+   * Or:
+   * Subject to push source elements into.
+   *
+   * @param {Function} [selector] Optional selector function which can use the multicasted source sequence subject to the policies enforced by the created subject. Specified only if <paramref name="subjectOrSubjectSelector" is a factory function.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.multicast = function (subjectOrSubjectSelector, selector) {
+    return isFunction(subjectOrSubjectSelector) ?
+      new MulticastObservable(this, subjectOrSubjectSelector, selector) :
+      new ConnectableObservable(this, subjectOrSubjectSelector);
+  };
+
+  /**
+   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence.
+   * This operator is a specialization of Multicast using a regular Subject.
+   *
+   * @example
+   * var resres = source.publish();
+   * var res = source.publish(function (x) { return x; });
+   *
+   * @param {Function} [selector] Selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will receive all notifications of the source from the time of the subscription on.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.publish = function (selector) {
+    return selector && isFunction(selector) ?
+      this.multicast(function () { return new Subject(); }, selector) :
+      this.multicast(new Subject());
+  };
+
+  /**
+   * Returns an observable sequence that shares a single subscription to the underlying sequence.
+   * This operator is a specialization of publish which creates a subscription when the number of observers goes from zero to one, then shares that subscription with all subsequent observers until the number of observers returns to zero, at which point the subscription is disposed.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence.
+   */
+  observableProto.share = function () {
+    return this.publish().refCount();
+  };
+
+  /**
+   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence containing only the last notification.
+   * This operator is a specialization of Multicast using a AsyncSubject.
+   *
+   * @example
+   * var res = source.publishLast();
+   * var res = source.publishLast(function (x) { return x; });
+   *
+   * @param selector [Optional] Selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will only receive the last notification of the source.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.publishLast = function (selector) {
+    return selector && isFunction(selector) ?
+      this.multicast(function () { return new AsyncSubject(); }, selector) :
+      this.multicast(new AsyncSubject());
+  };
+
+  /**
+   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence and starts with initialValue.
+   * This operator is a specialization of Multicast using a BehaviorSubject.
+   *
+   * @example
+   * var res = source.publishValue(42);
+   * var res = source.publishValue(function (x) { return x.select(function (y) { return y * y; }) }, 42);
+   *
+   * @param {Function} [selector] Optional selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will receive immediately receive the initial value, followed by all notifications of the source from the time of the subscription on.
+   * @param {Mixed} initialValue Initial value received by observers upon subscription.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.publishValue = function (initialValueOrSelector, initialValue) {
+    return arguments.length === 2 ?
+      this.multicast(function () {
+        return new BehaviorSubject(initialValue);
+      }, initialValueOrSelector) :
+      this.multicast(new BehaviorSubject(initialValueOrSelector));
+  };
+
+  /**
+   * Returns an observable sequence that shares a single subscription to the underlying sequence and starts with an initialValue.
+   * This operator is a specialization of publishValue which creates a subscription when the number of observers goes from zero to one, then shares that subscription with all subsequent observers until the number of observers returns to zero, at which point the subscription is disposed.
+   * @param {Mixed} initialValue Initial value received by observers upon subscription.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence.
+   */
+  observableProto.shareValue = function (initialValue) {
+    return this.publishValue(initialValue).refCount();
+  };
+
+  /**
+   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence replaying notifications subject to a maximum time length for the replay buffer.
+   * This operator is a specialization of Multicast using a ReplaySubject.
+   *
+   * @example
+   * var res = source.replay(null, 3);
+   * var res = source.replay(null, 3, 500);
+   * var res = source.replay(null, 3, 500, scheduler);
+   * var res = source.replay(function (x) { return x.take(6).repeat(); }, 3, 500, scheduler);
+   *
+   * @param selector [Optional] Selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will receive all the notifications of the source subject to the specified replay buffer trimming policy.
+   * @param bufferSize [Optional] Maximum element count of the replay buffer.
+   * @param windowSize [Optional] Maximum time length of the replay buffer.
+   * @param scheduler [Optional] Scheduler where connected observers within the selector function will be invoked on.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.replay = function (selector, bufferSize, windowSize, scheduler) {
+    return selector && isFunction(selector) ?
+      this.multicast(function () { return new ReplaySubject(bufferSize, windowSize, scheduler); }, selector) :
+      this.multicast(new ReplaySubject(bufferSize, windowSize, scheduler));
+  };
+
+  /**
+   * Returns an observable sequence that shares a single subscription to the underlying sequence replaying notifications subject to a maximum time length for the replay buffer.
+   * This operator is a specialization of replay which creates a subscription when the number of observers goes from zero to one, then shares that subscription with all subsequent observers until the number of observers returns to zero, at which point the subscription is disposed.
+   *
+   * @example
+   * var res = source.shareReplay(3);
+   * var res = source.shareReplay(3, 500);
+   * var res = source.shareReplay(3, 500, scheduler);
+   *
+
+   * @param bufferSize [Optional] Maximum element count of the replay buffer.
+   * @param window [Optional] Maximum time length of the replay buffer.
+   * @param scheduler [Optional] Scheduler where connected observers within the selector function will be invoked on.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence.
+   */
+  observableProto.shareReplay = function (bufferSize, windowSize, scheduler) {
+    return this.replay(null, bufferSize, windowSize, scheduler).refCount();
+  };
+
+  var InnerSubscription = function (s, o) {
+    this._s = s;
+    this._o = o;
+  };
+
+  InnerSubscription.prototype.dispose = function () {
+    if (!this._s.isDisposed && this._o !== null) {
+      var idx = this._s.observers.indexOf(this._o);
+      this._s.observers.splice(idx, 1);
+      this._o = null;
+    }
+  };
+
+  /**
+   *  Represents a value that changes over time.
+   *  Observers can subscribe to the subject to receive the last (or initial) value and all subsequent notifications.
+   */
+  var BehaviorSubject = Rx.BehaviorSubject = (function (__super__) {
+    inherits(BehaviorSubject, __super__);
+    function BehaviorSubject(value) {
+      __super__.call(this);
+      this.value = value;
+      this.observers = [];
+      this.isDisposed = false;
+      this.isStopped = false;
+      this.hasError = false;
+    }
+
+    addProperties(BehaviorSubject.prototype, Observer.prototype, {
+      _subscribe: function (o) {
+        checkDisposed(this);
+        if (!this.isStopped) {
+          this.observers.push(o);
+          o.onNext(this.value);
+          return new InnerSubscription(this, o);
+        }
+        if (this.hasError) {
+          o.onError(this.error);
+        } else {
+          o.onCompleted();
+        }
+        return disposableEmpty;
+      },
+      /**
+       * Gets the current value or throws an exception.
+       * Value is frozen after onCompleted is called.
+       * After onError is called always throws the specified exception.
+       * An exception is always thrown after dispose is called.
+       * @returns {Mixed} The initial value passed to the constructor until onNext is called; after which, the last value passed to onNext.
+       */
+      getValue: function () {
+        checkDisposed(this);
+        if (this.hasError) { thrower(this.error); }
+        return this.value;
+      },
+      /**
+       * Indicates whether the subject has observers subscribed to it.
+       * @returns {Boolean} Indicates whether the subject has observers subscribed to it.
+       */
+      hasObservers: function () { checkDisposed(this); return this.observers.length > 0; },
+      /**
+       * Notifies all subscribed observers about the end of the sequence.
+       */
+      onCompleted: function () {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.isStopped = true;
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          os[i].onCompleted();
+        }
+
+        this.observers.length = 0;
+      },
+      /**
+       * Notifies all subscribed observers about the exception.
+       * @param {Mixed} error The exception to send to all observers.
+       */
+      onError: function (error) {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.isStopped = true;
+        this.hasError = true;
+        this.error = error;
+
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          os[i].onError(error);
+        }
+
+        this.observers.length = 0;
+      },
+      /**
+       * Notifies all subscribed observers about the arrival of the specified element in the sequence.
+       * @param {Mixed} value The value to send to all observers.
+       */
+      onNext: function (value) {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.value = value;
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          os[i].onNext(value);
+        }
+      },
+      /**
+       * Unsubscribe all observers and release resources.
+       */
+      dispose: function () {
+        this.isDisposed = true;
+        this.observers = null;
+        this.value = null;
+        this.error = null;
+      }
+    });
+
+    return BehaviorSubject;
+  }(Observable));
+
+  /**
+   * Represents an object that is both an observable sequence as well as an observer.
+   * Each notification is broadcasted to all subscribed and future observers, subject to buffer trimming policies.
+   */
+  var ReplaySubject = Rx.ReplaySubject = (function (__super__) {
+
+    var maxSafeInteger = Math.pow(2, 53) - 1;
+
+    function createRemovableDisposable(subject, observer) {
+      return disposableCreate(function () {
+        observer.dispose();
+        !subject.isDisposed && subject.observers.splice(subject.observers.indexOf(observer), 1);
+      });
+    }
+
+    inherits(ReplaySubject, __super__);
+
+    /**
+     *  Initializes a new instance of the ReplaySubject class with the specified buffer size, window size and scheduler.
+     *  @param {Number} [bufferSize] Maximum element count of the replay buffer.
+     *  @param {Number} [windowSize] Maximum time length of the replay buffer.
+     *  @param {Scheduler} [scheduler] Scheduler the observers are invoked on.
+     */
+    function ReplaySubject(bufferSize, windowSize, scheduler) {
+      this.bufferSize = bufferSize == null ? maxSafeInteger : bufferSize;
+      this.windowSize = windowSize == null ? maxSafeInteger : windowSize;
+      this.scheduler = scheduler || currentThreadScheduler;
+      this.q = [];
+      this.observers = [];
+      this.isStopped = false;
+      this.isDisposed = false;
+      this.hasError = false;
+      this.error = null;
+      __super__.call(this);
+    }
+
+    addProperties(ReplaySubject.prototype, Observer.prototype, {
+      _subscribe: function (o) {
+        checkDisposed(this);
+        var so = new ScheduledObserver(this.scheduler, o), subscription = createRemovableDisposable(this, so);
+
+        this._trim(this.scheduler.now());
+        this.observers.push(so);
+
+        for (var i = 0, len = this.q.length; i < len; i++) {
+          so.onNext(this.q[i].value);
+        }
+
+        if (this.hasError) {
+          so.onError(this.error);
+        } else if (this.isStopped) {
+          so.onCompleted();
+        }
+
+        so.ensureActive();
+        return subscription;
+      },
+      /**
+       * Indicates whether the subject has observers subscribed to it.
+       * @returns {Boolean} Indicates whether the subject has observers subscribed to it.
+       */
+      hasObservers: function () { checkDisposed(this); return this.observers.length > 0; },
+      _trim: function (now) {
+        while (this.q.length > this.bufferSize) {
+          this.q.shift();
+        }
+        while (this.q.length > 0 && (now - this.q[0].interval) > this.windowSize) {
+          this.q.shift();
+        }
+      },
+      /**
+       * Notifies all subscribed observers about the arrival of the specified element in the sequence.
+       * @param {Mixed} value The value to send to all observers.
+       */
+      onNext: function (value) {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        var now = this.scheduler.now();
+        this.q.push({ interval: now, value: value });
+        this._trim(now);
+
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          var observer = os[i];
+          observer.onNext(value);
+          observer.ensureActive();
+        }
+      },
+      /**
+       * Notifies all subscribed observers about the exception.
+       * @param {Mixed} error The exception to send to all observers.
+       */
+      onError: function (error) {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.isStopped = true;
+        this.error = error;
+        this.hasError = true;
+        var now = this.scheduler.now();
+        this._trim(now);
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          var observer = os[i];
+          observer.onError(error);
+          observer.ensureActive();
+        }
+        this.observers.length = 0;
+      },
+      /**
+       * Notifies all subscribed observers about the end of the sequence.
+       */
+      onCompleted: function () {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.isStopped = true;
+        var now = this.scheduler.now();
+        this._trim(now);
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          var observer = os[i];
+          observer.onCompleted();
+          observer.ensureActive();
+        }
+        this.observers.length = 0;
+      },
+      /**
+       * Unsubscribe all observers and release resources.
+       */
+      dispose: function () {
+        this.isDisposed = true;
+        this.observers = null;
+      }
+    });
+
+    return ReplaySubject;
+  }(Observable));
+
+  var RefCountObservable = (function (__super__) {
+    inherits(RefCountObservable, __super__);
+    function RefCountObservable(source) {
+      this.source = source;
+      this._count = 0;
+      this._connectableSubscription = null;
+      __super__.call(this);
+    }
+
+    RefCountObservable.prototype.subscribeCore = function (o) {
+      var subscription = this.source.subscribe(o);
+      ++this._count === 1 && (this._connectableSubscription = this.source.connect());
+      return new RefCountDisposable(this, subscription);
+    };
+
+    function RefCountDisposable(p, s) {
+      this._p = p;
+      this._s = s;
+      this.isDisposed = false;
+    }
+
+    RefCountDisposable.prototype.dispose = function () {
+      if (!this.isDisposed) {
+        this.isDisposed = true;
+        this._s.dispose();
+        --this._p._count === 0 && this._p._connectableSubscription.dispose();
+      }
+    };
+
+    return RefCountObservable;
+  }(ObservableBase));
+
+  var ConnectableObservable = Rx.ConnectableObservable = (function (__super__) {
+    inherits(ConnectableObservable, __super__);
+    function ConnectableObservable(source, subject) {
+      this.source = source;
+      this._connection = null;
+      this._source = source.asObservable();
+      this._subject = subject;
+      __super__.call(this);
+    }
+
+    function ConnectDisposable(parent, subscription) {
+      this._p = parent;
+      this._s = subscription;
+    }
+
+    ConnectDisposable.prototype.dispose = function () {
+      if (this._s) {
+        this._s.dispose();
+        this._s = null;
+        this._p._connection = null;
+      }
+    };
+
+    ConnectableObservable.prototype.connect = function () {
+      if (!this._connection) {
+        if (this._subject.isStopped) {
+          return disposableEmpty;
+        }
+        var subscription = this._source.subscribe(this._subject);
+        this._connection = new ConnectDisposable(this, subscription);
+      }
+      return this._connection;
+    };
+
+    ConnectableObservable.prototype._subscribe = function (o) {
+      return this._subject.subscribe(o);
+    };
+
+    ConnectableObservable.prototype.refCount = function () {
+      return new RefCountObservable(this);
+    };
+
+    return ConnectableObservable;
+  }(Observable));
+
+  /**
+   * Returns an observable sequence that shares a single subscription to the underlying sequence. This observable sequence
+   * can be resubscribed to, even if all prior subscriptions have ended. (unlike `.publish().refCount()`)
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source.
+   */
+  observableProto.singleInstance = function() {
+    var source = this, hasObservable = false, observable;
+
+    function getObservable() {
+      if (!hasObservable) {
+        hasObservable = true;
+        observable = source['finally'](function() { hasObservable = false; }).publish().refCount();
+      }
+      return observable;
+    }
+
+    return new AnonymousObservable(function(o) {
+      return getObservable().subscribe(o);
+    });
+  };
+
+  return Rx;
+}));

node_modules/rx/dist/rx.coincidence.js

@@ -0,0 +1,623 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx'], function (Rx, exports) {
+      return factory(root, exports, Rx);
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('./rx'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  var Observable = Rx.Observable,
+    ObservableBase = Rx.ObservableBase,
+    AbstractObserver = Rx.internals.AbstractObserver,
+    CompositeDisposable = Rx.CompositeDisposable,
+    BinaryDisposable = Rx.BinaryDisposable,
+    RefCountDisposable = Rx.RefCountDisposable,
+    SingleAssignmentDisposable = Rx.SingleAssignmentDisposable,
+    SerialDisposable = Rx.SerialDisposable,
+    Subject = Rx.Subject,
+    observableProto = Observable.prototype,
+    observableEmpty = Observable.empty,
+    observableNever = Observable.never,
+    AnonymousObservable = Rx.AnonymousObservable,
+    addRef = Rx.internals.addRef,
+    inherits = Rx.internals.inherits,
+    bindCallback = Rx.internals.bindCallback,
+    noop = Rx.helpers.noop,
+    isPromise = Rx.helpers.isPromise,
+    isFunction = Rx.helpers.isFunction,
+    observableFromPromise = Observable.fromPromise;
+
+  var errorObj = {e: {}};
+  
+  function tryCatcherGen(tryCatchTarget) {
+    return function tryCatcher() {
+      try {
+        return tryCatchTarget.apply(this, arguments);
+      } catch (e) {
+        errorObj.e = e;
+        return errorObj;
+      }
+    };
+  }
+
+  var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
+    if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
+    return tryCatcherGen(fn);
+  };
+
+  function thrower(e) {
+    throw e;
+  }
+
+  var Map = root.Map || (function () {
+    function Map() {
+      this.size = 0;
+      this._values = [];
+      this._keys = [];
+    }
+
+    Map.prototype['delete'] = function (key) {
+      var i = this._keys.indexOf(key);
+      if (i === -1) { return false; }
+      this._values.splice(i, 1);
+      this._keys.splice(i, 1);
+      this.size--;
+      return true;
+    };
+
+    Map.prototype.get = function (key) {
+      var i = this._keys.indexOf(key);
+      return i === -1 ? undefined : this._values[i];
+    };
+
+    Map.prototype.set = function (key, value) {
+      var i = this._keys.indexOf(key);
+      if (i === -1) {
+        this._keys.push(key);
+        this._values.push(value);
+        this.size++;
+      } else {
+        this._values[i] = value;
+      }
+      return this;
+    };
+
+    Map.prototype.forEach = function (cb, thisArg) {
+      for (var i = 0; i < this.size; i++) {
+        cb.call(thisArg, this._values[i], this._keys[i]);
+      }
+    };
+
+    return Map;
+  }());
+
+  /**
+   *  Correlates the elements of two sequences based on overlapping durations.
+   *
+   *  @param {Observable} right The right observable sequence to join elements for.
+   *  @param {Function} leftDurationSelector A function to select the duration (expressed as an observable sequence) of each element of the left observable sequence, used to determine overlap.
+   *  @param {Function} rightDurationSelector A function to select the duration (expressed as an observable sequence) of each element of the right observable sequence, used to determine overlap.
+   *  @param {Function} resultSelector A function invoked to compute a result element for any two overlapping elements of the left and right observable sequences. The parameters passed to the function correspond with the elements from the left and right source sequences for which overlap occurs.
+   *  @returns {Observable} An observable sequence that contains result elements computed from source elements that have an overlapping duration.
+   */
+  observableProto.join = function (right, leftDurationSelector, rightDurationSelector, resultSelector) {
+    var left = this;
+    return new AnonymousObservable(function (o) {
+      var group = new CompositeDisposable();
+      var leftDone = false, rightDone = false;
+      var leftId = 0, rightId = 0;
+      var leftMap = new Map(), rightMap = new Map();
+      var handleError = function (e) { o.onError(e); };
+
+      group.add(left.subscribe(
+        function (value) {
+          var id = leftId++, md = new SingleAssignmentDisposable();
+
+          leftMap.set(id, value);
+          group.add(md);
+
+          var duration = tryCatch(leftDurationSelector)(value);
+          if (duration === errorObj) { return o.onError(duration.e); }
+
+          md.setDisposable(duration.take(1).subscribe(
+            noop,
+            handleError,
+            function () {
+              leftMap['delete'](id) && leftMap.size === 0 && leftDone && o.onCompleted();
+              group.remove(md);
+            }));
+
+          rightMap.forEach(function (v) {
+            var result = tryCatch(resultSelector)(value, v);
+            if (result === errorObj) { return o.onError(result.e); }
+            o.onNext(result);
+          });
+        },
+        handleError,
+        function () {
+          leftDone = true;
+          (rightDone || leftMap.size === 0) && o.onCompleted();
+        })
+      );
+
+      group.add(right.subscribe(
+        function (value) {
+          var id = rightId++, md = new SingleAssignmentDisposable();
+
+          rightMap.set(id, value);
+          group.add(md);
+
+          var duration = tryCatch(rightDurationSelector)(value);
+          if (duration === errorObj) { return o.onError(duration.e); }
+
+          md.setDisposable(duration.take(1).subscribe(
+            noop,
+            handleError,
+            function () {
+              rightMap['delete'](id) && rightMap.size === 0 && rightDone && o.onCompleted();
+              group.remove(md);
+            }));
+
+          leftMap.forEach(function (v) {
+            var result = tryCatch(resultSelector)(v, value);
+            if (result === errorObj) { return o.onError(result.e); }
+            o.onNext(result);
+          });
+        },
+        handleError,
+        function () {
+          rightDone = true;
+          (leftDone || rightMap.size === 0) && o.onCompleted();
+        })
+      );
+      return group;
+    }, left);
+  };
+
+  /**
+   *  Correlates the elements of two sequences based on overlapping durations, and groups the results.
+   *
+   *  @param {Observable} right The right observable sequence to join elements for.
+   *  @param {Function} leftDurationSelector A function to select the duration (expressed as an observable sequence) of each element of the left observable sequence, used to determine overlap.
+   *  @param {Function} rightDurationSelector A function to select the duration (expressed as an observable sequence) of each element of the right observable sequence, used to determine overlap.
+   *  @param {Function} resultSelector A function invoked to compute a result element for any element of the left sequence with overlapping elements from the right observable sequence. The first parameter passed to the function is an element of the left sequence. The second parameter passed to the function is an observable sequence with elements from the right sequence that overlap with the left sequence's element.
+   *  @returns {Observable} An observable sequence that contains result elements computed from source elements that have an overlapping duration.
+   */
+  observableProto.groupJoin = function (right, leftDurationSelector, rightDurationSelector, resultSelector) {
+    var left = this;
+    return new AnonymousObservable(function (o) {
+      var group = new CompositeDisposable();
+      var r = new RefCountDisposable(group);
+      var leftMap = new Map(), rightMap = new Map();
+      var leftId = 0, rightId = 0;
+      var handleError = function (e) { return function (v) { v.onError(e); }; };
+
+      function handleError(e) { };
+
+      group.add(left.subscribe(
+        function (value) {
+          var s = new Subject();
+          var id = leftId++;
+          leftMap.set(id, s);
+
+          var result = tryCatch(resultSelector)(value, addRef(s, r));
+          if (result === errorObj) {
+            leftMap.forEach(handleError(result.e));
+            return o.onError(result.e);
+          }
+          o.onNext(result);
+
+          rightMap.forEach(function (v) { s.onNext(v); });
+
+          var md = new SingleAssignmentDisposable();
+          group.add(md);
+
+          var duration = tryCatch(leftDurationSelector)(value);
+          if (duration === errorObj) {
+            leftMap.forEach(handleError(duration.e));
+            return o.onError(duration.e);
+          }
+
+          md.setDisposable(duration.take(1).subscribe(
+            noop,
+            function (e) {
+              leftMap.forEach(handleError(e));
+              o.onError(e);
+            },
+            function () {
+              leftMap['delete'](id) && s.onCompleted();
+              group.remove(md);
+            }));
+        },
+        function (e) {
+          leftMap.forEach(handleError(e));
+          o.onError(e);
+        },
+        function () { o.onCompleted(); })
+      );
+
+      group.add(right.subscribe(
+        function (value) {
+          var id = rightId++;
+          rightMap.set(id, value);
+
+          var md = new SingleAssignmentDisposable();
+          group.add(md);
+
+          var duration = tryCatch(rightDurationSelector)(value);
+          if (duration === errorObj) {
+            leftMap.forEach(handleError(duration.e));
+            return o.onError(duration.e);
+          }
+
+          md.setDisposable(duration.take(1).subscribe(
+            noop,
+            function (e) {
+              leftMap.forEach(handleError(e));
+              o.onError(e);
+            },
+            function () {
+              rightMap['delete'](id);
+              group.remove(md);
+            }));
+
+          leftMap.forEach(function (v) { v.onNext(value); });
+        },
+        function (e) {
+          leftMap.forEach(handleError(e));
+          o.onError(e);
+        })
+      );
+
+      return r;
+    }, left);
+  };
+
+  function toArray(x) { return x.toArray(); }
+
+  /**
+   *  Projects each element of an observable sequence into zero or more buffers.
+   *  @param {Mixed} bufferOpeningsOrClosingSelector Observable sequence whose elements denote the creation of new windows, or, a function invoked to define the boundaries of the produced windows (a new window is started when the previous one is closed, resulting in non-overlapping windows).
+   *  @param {Function} [bufferClosingSelector] A function invoked to define the closing of each produced window. If a closing selector function is specified for the first parameter, this parameter is ignored.
+   *  @returns {Observable} An observable sequence of windows.
+   */
+  observableProto.buffer = function () {
+    return this.window.apply(this, arguments)
+      .flatMap(toArray);
+  };
+
+  /**
+   *  Projects each element of an observable sequence into zero or more windows.
+   *
+   *  @param {Mixed} windowOpeningsOrClosingSelector Observable sequence whose elements denote the creation of new windows, or, a function invoked to define the boundaries of the produced windows (a new window is started when the previous one is closed, resulting in non-overlapping windows).
+   *  @param {Function} [windowClosingSelector] A function invoked to define the closing of each produced window. If a closing selector function is specified for the first parameter, this parameter is ignored.
+   *  @returns {Observable} An observable sequence of windows.
+   */
+  observableProto.window = function (windowOpeningsOrClosingSelector, windowClosingSelector) {
+    if (arguments.length === 1 && typeof arguments[0] !== 'function') {
+      return observableWindowWithBoundaries.call(this, windowOpeningsOrClosingSelector);
+    }
+    return typeof windowOpeningsOrClosingSelector === 'function' ?
+      observableWindowWithClosingSelector.call(this, windowOpeningsOrClosingSelector) :
+      observableWindowWithOpenings.call(this, windowOpeningsOrClosingSelector, windowClosingSelector);
+  };
+
+  function observableWindowWithOpenings(windowOpenings, windowClosingSelector) {
+    return windowOpenings.groupJoin(this, windowClosingSelector, observableEmpty, function (_, win) {
+      return win;
+    });
+  }
+
+  function observableWindowWithBoundaries(windowBoundaries) {
+    var source = this;
+    return new AnonymousObservable(function (observer) {
+      var win = new Subject(),
+        d = new CompositeDisposable(),
+        r = new RefCountDisposable(d);
+
+      observer.onNext(addRef(win, r));
+
+      d.add(source.subscribe(function (x) {
+        win.onNext(x);
+      }, function (err) {
+        win.onError(err);
+        observer.onError(err);
+      }, function () {
+        win.onCompleted();
+        observer.onCompleted();
+      }));
+
+      isPromise(windowBoundaries) && (windowBoundaries = observableFromPromise(windowBoundaries));
+
+      d.add(windowBoundaries.subscribe(function (w) {
+        win.onCompleted();
+        win = new Subject();
+        observer.onNext(addRef(win, r));
+      }, function (err) {
+        win.onError(err);
+        observer.onError(err);
+      }, function () {
+        win.onCompleted();
+        observer.onCompleted();
+      }));
+
+      return r;
+    }, source);
+  }
+
+  function observableWindowWithClosingSelector(windowClosingSelector) {
+    var source = this;
+    return new AnonymousObservable(function (observer) {
+      var m = new SerialDisposable(),
+        d = new CompositeDisposable(m),
+        r = new RefCountDisposable(d),
+        win = new Subject();
+      observer.onNext(addRef(win, r));
+      d.add(source.subscribe(function (x) {
+          win.onNext(x);
+      }, function (err) {
+          win.onError(err);
+          observer.onError(err);
+      }, function () {
+          win.onCompleted();
+          observer.onCompleted();
+      }));
+
+      function createWindowClose () {
+        var windowClose;
+        try {
+          windowClose = windowClosingSelector();
+        } catch (e) {
+          observer.onError(e);
+          return;
+        }
+
+        isPromise(windowClose) && (windowClose = observableFromPromise(windowClose));
+
+        var m1 = new SingleAssignmentDisposable();
+        m.setDisposable(m1);
+        m1.setDisposable(windowClose.take(1).subscribe(noop, function (err) {
+          win.onError(err);
+          observer.onError(err);
+        }, function () {
+          win.onCompleted();
+          win = new Subject();
+          observer.onNext(addRef(win, r));
+          createWindowClose();
+        }));
+      }
+
+      createWindowClose();
+      return r;
+    }, source);
+  }
+
+  var PairwiseObservable = (function (__super__) {
+    inherits(PairwiseObservable, __super__);
+    function PairwiseObservable(source) {
+      this.source = source;
+      __super__.call(this);
+    }
+
+    PairwiseObservable.prototype.subscribeCore = function (o) {
+      return this.source.subscribe(new PairwiseObserver(o));
+    };
+
+    return PairwiseObservable;
+  }(ObservableBase));
+
+  var PairwiseObserver = (function(__super__) {
+    inherits(PairwiseObserver, __super__);
+    function PairwiseObserver(o) {
+      this._o = o;
+      this._p = null;
+      this._hp = false;
+      __super__.call(this);
+    }
+
+    PairwiseObserver.prototype.next = function (x) {
+      if (this._hp) {
+        this._o.onNext([this._p, x]);
+      } else {
+        this._hp = true;
+      }
+      this._p = x;
+    };
+    PairwiseObserver.prototype.error = function (err) { this._o.onError(err); };
+    PairwiseObserver.prototype.completed = function () { this._o.onCompleted(); };
+
+    return PairwiseObserver;
+  }(AbstractObserver));
+
+  /**
+   * Returns a new observable that triggers on the second and subsequent triggerings of the input observable.
+   * The Nth triggering of the input observable passes the arguments from the N-1th and Nth triggering as a pair.
+   * The argument passed to the N-1th triggering is held in hidden internal state until the Nth triggering occurs.
+   * @returns {Observable} An observable that triggers on successive pairs of observations from the input observable as an array.
+   */
+  observableProto.pairwise = function () {
+    return new PairwiseObservable(this);
+  };
+
+  /**
+   * Returns two observables which partition the observations of the source by the given function.
+   * The first will trigger observations for those values for which the predicate returns true.
+   * The second will trigger observations for those values where the predicate returns false.
+   * The predicate is executed once for each subscribed observer.
+   * Both also propagate all error observations arising from the source and each completes
+   * when the source completes.
+   * @param {Function} predicate
+   *    The function to determine which output Observable will trigger a particular observation.
+   * @returns {Array}
+   *    An array of observables. The first triggers when the predicate returns true,
+   *    and the second triggers when the predicate returns false.
+  */
+  observableProto.partition = function(predicate, thisArg) {
+    var fn = bindCallback(predicate, thisArg, 3);
+    return [
+      this.filter(predicate, thisArg),
+      this.filter(function (x, i, o) { return !fn(x, i, o); })
+    ];
+  };
+
+  /**
+   *  Groups the elements of an observable sequence according to a specified key selector function and comparer and selects the resulting elements by using a specified function.
+   *
+   * @example
+   *  var res = observable.groupBy(function (x) { return x.id; });
+   *  2 - observable.groupBy(function (x) { return x.id; }), function (x) { return x.name; });
+   *  3 - observable.groupBy(function (x) { return x.id; }), function (x) { return x.name; }, function (x) { return x.toString(); });
+   * @param {Function} keySelector A function to extract the key for each element.
+   * @param {Function} [elementSelector]  A function to map each source element to an element in an observable group.
+   * @returns {Observable} A sequence of observable groups, each of which corresponds to a unique key value, containing all elements that share that same key value.
+   */
+  observableProto.groupBy = function (keySelector, elementSelector) {
+    return this.groupByUntil(keySelector, elementSelector, observableNever);
+  };
+
+    /**
+     *  Groups the elements of an observable sequence according to a specified key selector function.
+     *  A duration selector function is used to control the lifetime of groups. When a group expires, it receives an OnCompleted notification. When a new element with the same
+     *  key value as a reclaimed group occurs, the group will be reborn with a new lifetime request.
+     *
+     * @example
+     *  var res = observable.groupByUntil(function (x) { return x.id; }, null,  function () { return Rx.Observable.never(); });
+     *  2 - observable.groupBy(function (x) { return x.id; }), function (x) { return x.name; },  function () { return Rx.Observable.never(); });
+     *  3 - observable.groupBy(function (x) { return x.id; }), function (x) { return x.name; },  function () { return Rx.Observable.never(); }, function (x) { return x.toString(); });
+     * @param {Function} keySelector A function to extract the key for each element.
+     * @param {Function} durationSelector A function to signal the expiration of a group.
+     * @returns {Observable}
+     *  A sequence of observable groups, each of which corresponds to a unique key value, containing all elements that share that same key value.
+     *  If a group's lifetime expires, a new group with the same key value can be created once an element with such a key value is encoutered.
+     *
+     */
+    observableProto.groupByUntil = function (keySelector, elementSelector, durationSelector) {
+      var source = this;
+      return new AnonymousObservable(function (o) {
+        var map = new Map(),
+          groupDisposable = new CompositeDisposable(),
+          refCountDisposable = new RefCountDisposable(groupDisposable),
+          handleError = function (e) { return function (item) { item.onError(e); }; };
+
+        groupDisposable.add(
+          source.subscribe(function (x) {
+            var key = tryCatch(keySelector)(x);
+            if (key === errorObj) {
+              map.forEach(handleError(key.e));
+              return o.onError(key.e);
+            }
+
+            var fireNewMapEntry = false, writer = map.get(key);
+            if (writer === undefined) {
+              writer = new Subject();
+              map.set(key, writer);
+              fireNewMapEntry = true;
+            }
+
+            if (fireNewMapEntry) {
+              var group = new GroupedObservable(key, writer, refCountDisposable),
+                durationGroup = new GroupedObservable(key, writer);
+              var duration = tryCatch(durationSelector)(durationGroup);
+              if (duration === errorObj) {
+                map.forEach(handleError(duration.e));
+                return o.onError(duration.e);
+              }
+
+              o.onNext(group);
+
+              var md = new SingleAssignmentDisposable();
+              groupDisposable.add(md);
+
+              md.setDisposable(duration.take(1).subscribe(
+                noop,
+                function (e) {
+                  map.forEach(handleError(e));
+                  o.onError(e);
+                },
+                function () {
+                  if (map['delete'](key)) { writer.onCompleted(); }
+                  groupDisposable.remove(md);
+                }));
+            }
+
+            var element = x;
+            if (isFunction(elementSelector)) {
+              element = tryCatch(elementSelector)(x);
+              if (element === errorObj) {
+                map.forEach(handleError(element.e));
+                return o.onError(element.e);
+              }
+            }
+
+            writer.onNext(element);
+        }, function (e) {
+          map.forEach(handleError(e));
+          o.onError(e);
+        }, function () {
+          map.forEach(function (item) { item.onCompleted(); });
+          o.onCompleted();
+        }));
+
+      return refCountDisposable;
+    }, source);
+  };
+
+  var UnderlyingObservable = (function (__super__) {
+    inherits(UnderlyingObservable, __super__);
+    function UnderlyingObservable(m, u) {
+      this._m = m;
+      this._u = u;
+      __super__.call(this);
+    }
+
+    UnderlyingObservable.prototype.subscribeCore = function (o) {
+      return new BinaryDisposable(this._m.getDisposable(), this._u.subscribe(o));
+    };
+
+    return UnderlyingObservable;
+  }(ObservableBase));
+
+  var GroupedObservable = (function (__super__) {
+    inherits(GroupedObservable, __super__);
+    function GroupedObservable(key, underlyingObservable, mergedDisposable) {
+      __super__.call(this);
+      this.key = key;
+      this.underlyingObservable = !mergedDisposable ?
+        underlyingObservable :
+        new UnderlyingObservable(mergedDisposable, underlyingObservable);
+    }
+
+    GroupedObservable.prototype._subscribe = function (o) {
+      return this.underlyingObservable.subscribe(o);
+    };
+
+    return GroupedObservable;
+  }(Observable));
+
+  return Rx;
+}));

node_modules/rx/dist/rx.core.binding.js

@@ -0,0 +1,863 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+    // Because of build optimizers
+    if (typeof define === 'function' && define.amd) {
+        define(['./rx.core'], function (Rx, exports) {
+            return factory(root, exports, Rx);
+        });
+    } else if (typeof module === 'object' && module && module.exports === freeExports) {
+        module.exports = factory(root, module.exports, require('./rx.core'));
+    } else {
+        root.Rx = factory(root, {}, root.Rx);
+    }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  var Observable = Rx.Observable,
+    observableProto = Observable.prototype,
+    AnonymousObservable = Rx.AnonymousObservable,
+    ObservableBase = Rx.ObservableBase,
+    Observer = Rx.Observer,
+    AbstractObserver = Rx.internals.AbstractObserver,
+    disposableCreate = Rx.Disposable.create,
+    disposableEmpty = Rx.Disposable.empty,
+    CompositeDisposable = Rx.CompositeDisposable,
+    BinaryDisposable = Rx.BinaryDisposable,
+    SerialDisposable = Rx.SerialDisposable,
+    currentThreadScheduler = Rx.Scheduler.currentThread,
+    isFunction = Rx.helpers.isFunction,
+    inherits = Rx.internals.inherits,
+    addProperties = Rx.internals.addProperties,
+    checkDisposed = Rx.Disposable.checkDisposed;
+
+  // Utilities
+  function cloneArray(arr) {
+    var len = arr.length, a = new Array(len);
+    for(var i = 0; i < len; i++) { a[i] = arr[i]; }
+    return a;
+  }
+
+  var errorObj = {e: {}};
+  
+  function tryCatcherGen(tryCatchTarget) {
+    return function tryCatcher() {
+      try {
+        return tryCatchTarget.apply(this, arguments);
+      } catch (e) {
+        errorObj.e = e;
+        return errorObj;
+      }
+    };
+  }
+
+  var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
+    if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
+    return tryCatcherGen(fn);
+  };
+
+  function thrower(e) {
+    throw e;
+  }
+
+  var MulticastObservable = (function (__super__) {
+    inherits(MulticastObservable, __super__);
+    function MulticastObservable(source, fn1, fn2) {
+      this.source = source;
+      this._fn1 = fn1;
+      this._fn2 = fn2;
+      __super__.call(this);
+    }
+
+    MulticastObservable.prototype.subscribeCore = function (o) {
+      var connectable = this.source.multicast(this._fn1());
+      return new BinaryDisposable(this._fn2(connectable).subscribe(o), connectable.connect());
+    };
+
+    return MulticastObservable;
+  }(ObservableBase));
+
+  /**
+   * Multicasts the source sequence notifications through an instantiated subject into all uses of the sequence within a selector function. Each
+   * subscription to the resulting sequence causes a separate multicast invocation, exposing the sequence resulting from the selector function's
+   * invocation. For specializations with fixed subject types, see Publish, PublishLast, and Replay.
+   *
+   * @example
+   * 1 - res = source.multicast(observable);
+   * 2 - res = source.multicast(function () { return new Subject(); }, function (x) { return x; });
+   *
+   * @param {Function|Subject} subjectOrSubjectSelector
+   * Factory function to create an intermediate subject through which the source sequence's elements will be multicast to the selector function.
+   * Or:
+   * Subject to push source elements into.
+   *
+   * @param {Function} [selector] Optional selector function which can use the multicasted source sequence subject to the policies enforced by the created subject. Specified only if <paramref name="subjectOrSubjectSelector" is a factory function.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.multicast = function (subjectOrSubjectSelector, selector) {
+    return isFunction(subjectOrSubjectSelector) ?
+      new MulticastObservable(this, subjectOrSubjectSelector, selector) :
+      new ConnectableObservable(this, subjectOrSubjectSelector);
+  };
+
+  /**
+   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence.
+   * This operator is a specialization of Multicast using a regular Subject.
+   *
+   * @example
+   * var resres = source.publish();
+   * var res = source.publish(function (x) { return x; });
+   *
+   * @param {Function} [selector] Selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will receive all notifications of the source from the time of the subscription on.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.publish = function (selector) {
+    return selector && isFunction(selector) ?
+      this.multicast(function () { return new Subject(); }, selector) :
+      this.multicast(new Subject());
+  };
+
+  /**
+   * Returns an observable sequence that shares a single subscription to the underlying sequence.
+   * This operator is a specialization of publish which creates a subscription when the number of observers goes from zero to one, then shares that subscription with all subsequent observers until the number of observers returns to zero, at which point the subscription is disposed.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence.
+   */
+  observableProto.share = function () {
+    return this.publish().refCount();
+  };
+
+  /**
+   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence containing only the last notification.
+   * This operator is a specialization of Multicast using a AsyncSubject.
+   *
+   * @example
+   * var res = source.publishLast();
+   * var res = source.publishLast(function (x) { return x; });
+   *
+   * @param selector [Optional] Selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will only receive the last notification of the source.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.publishLast = function (selector) {
+    return selector && isFunction(selector) ?
+      this.multicast(function () { return new AsyncSubject(); }, selector) :
+      this.multicast(new AsyncSubject());
+  };
+
+  /**
+   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence and starts with initialValue.
+   * This operator is a specialization of Multicast using a BehaviorSubject.
+   *
+   * @example
+   * var res = source.publishValue(42);
+   * var res = source.publishValue(function (x) { return x.select(function (y) { return y * y; }) }, 42);
+   *
+   * @param {Function} [selector] Optional selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will receive immediately receive the initial value, followed by all notifications of the source from the time of the subscription on.
+   * @param {Mixed} initialValue Initial value received by observers upon subscription.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.publishValue = function (initialValueOrSelector, initialValue) {
+    return arguments.length === 2 ?
+      this.multicast(function () {
+        return new BehaviorSubject(initialValue);
+      }, initialValueOrSelector) :
+      this.multicast(new BehaviorSubject(initialValueOrSelector));
+  };
+
+  /**
+   * Returns an observable sequence that shares a single subscription to the underlying sequence and starts with an initialValue.
+   * This operator is a specialization of publishValue which creates a subscription when the number of observers goes from zero to one, then shares that subscription with all subsequent observers until the number of observers returns to zero, at which point the subscription is disposed.
+   * @param {Mixed} initialValue Initial value received by observers upon subscription.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence.
+   */
+  observableProto.shareValue = function (initialValue) {
+    return this.publishValue(initialValue).refCount();
+  };
+
+  /**
+   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence replaying notifications subject to a maximum time length for the replay buffer.
+   * This operator is a specialization of Multicast using a ReplaySubject.
+   *
+   * @example
+   * var res = source.replay(null, 3);
+   * var res = source.replay(null, 3, 500);
+   * var res = source.replay(null, 3, 500, scheduler);
+   * var res = source.replay(function (x) { return x.take(6).repeat(); }, 3, 500, scheduler);
+   *
+   * @param selector [Optional] Selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will receive all the notifications of the source subject to the specified replay buffer trimming policy.
+   * @param bufferSize [Optional] Maximum element count of the replay buffer.
+   * @param windowSize [Optional] Maximum time length of the replay buffer.
+   * @param scheduler [Optional] Scheduler where connected observers within the selector function will be invoked on.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.replay = function (selector, bufferSize, windowSize, scheduler) {
+    return selector && isFunction(selector) ?
+      this.multicast(function () { return new ReplaySubject(bufferSize, windowSize, scheduler); }, selector) :
+      this.multicast(new ReplaySubject(bufferSize, windowSize, scheduler));
+  };
+
+  /**
+   * Returns an observable sequence that shares a single subscription to the underlying sequence replaying notifications subject to a maximum time length for the replay buffer.
+   * This operator is a specialization of replay which creates a subscription when the number of observers goes from zero to one, then shares that subscription with all subsequent observers until the number of observers returns to zero, at which point the subscription is disposed.
+   *
+   * @example
+   * var res = source.shareReplay(3);
+   * var res = source.shareReplay(3, 500);
+   * var res = source.shareReplay(3, 500, scheduler);
+   *
+
+   * @param bufferSize [Optional] Maximum element count of the replay buffer.
+   * @param window [Optional] Maximum time length of the replay buffer.
+   * @param scheduler [Optional] Scheduler where connected observers within the selector function will be invoked on.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence.
+   */
+  observableProto.shareReplay = function (bufferSize, windowSize, scheduler) {
+    return this.replay(null, bufferSize, windowSize, scheduler).refCount();
+  };
+
+  var ScheduledObserver = Rx.internals.ScheduledObserver = (function (__super__) {
+    inherits(ScheduledObserver, __super__);
+
+    function ScheduledObserver(scheduler, observer) {
+      __super__.call(this);
+      this.scheduler = scheduler;
+      this.observer = observer;
+      this.isAcquired = false;
+      this.hasFaulted = false;
+      this.queue = [];
+      this.disposable = new SerialDisposable();
+    }
+
+    function enqueueNext(observer, x) { return function () { observer.onNext(x); }; }
+    function enqueueError(observer, e) { return function () { observer.onError(e); }; }
+    function enqueueCompleted(observer) { return function () { observer.onCompleted(); }; }
+
+    ScheduledObserver.prototype.next = function (x) {
+      this.queue.push(enqueueNext(this.observer, x));
+    };
+
+    ScheduledObserver.prototype.error = function (e) {
+      this.queue.push(enqueueError(this.observer, e));
+    };
+
+    ScheduledObserver.prototype.completed = function () {
+      this.queue.push(enqueueCompleted(this.observer));
+    };
+
+
+    function scheduleMethod(state, recurse) {
+      var work;
+      if (state.queue.length > 0) {
+        work = state.queue.shift();
+      } else {
+        state.isAcquired = false;
+        return;
+      }
+      var res = tryCatch(work)();
+      if (res === errorObj) {
+        state.queue = [];
+        state.hasFaulted = true;
+        return thrower(res.e);
+      }
+      recurse(state);
+    }
+
+    ScheduledObserver.prototype.ensureActive = function () {
+      var isOwner = false;
+      if (!this.hasFaulted && this.queue.length > 0) {
+        isOwner = !this.isAcquired;
+        this.isAcquired = true;
+      }
+      isOwner &&
+        this.disposable.setDisposable(this.scheduler.scheduleRecursive(this, scheduleMethod));
+    };
+
+    ScheduledObserver.prototype.dispose = function () {
+      __super__.prototype.dispose.call(this);
+      this.disposable.dispose();
+    };
+
+    return ScheduledObserver;
+  }(AbstractObserver));
+
+  var InnerSubscription = function (s, o) {
+    this._s = s;
+    this._o = o;
+  };
+
+  InnerSubscription.prototype.dispose = function () {
+    if (!this._s.isDisposed && this._o !== null) {
+      var idx = this._s.observers.indexOf(this._o);
+      this._s.observers.splice(idx, 1);
+      this._o = null;
+    }
+  };
+
+  /**
+   *  Represents an object that is both an observable sequence as well as an observer.
+   *  Each notification is broadcasted to all subscribed observers.
+   */
+  var Subject = Rx.Subject = (function (__super__) {
+    inherits(Subject, __super__);
+    function Subject() {
+      __super__.call(this);
+      this.isDisposed = false;
+      this.isStopped = false;
+      this.observers = [];
+      this.hasError = false;
+    }
+
+    addProperties(Subject.prototype, Observer.prototype, {
+      _subscribe: function (o) {
+        checkDisposed(this);
+        if (!this.isStopped) {
+          this.observers.push(o);
+          return new InnerSubscription(this, o);
+        }
+        if (this.hasError) {
+          o.onError(this.error);
+          return disposableEmpty;
+        }
+        o.onCompleted();
+        return disposableEmpty;
+      },
+      /**
+       * Indicates whether the subject has observers subscribed to it.
+       * @returns {Boolean} Indicates whether the subject has observers subscribed to it.
+       */
+      hasObservers: function () { checkDisposed(this); return this.observers.length > 0; },
+      /**
+       * Notifies all subscribed observers about the end of the sequence.
+       */
+      onCompleted: function () {
+        checkDisposed(this);
+        if (!this.isStopped) {
+          this.isStopped = true;
+          for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+            os[i].onCompleted();
+          }
+
+          this.observers.length = 0;
+        }
+      },
+      /**
+       * Notifies all subscribed observers about the exception.
+       * @param {Mixed} error The exception to send to all observers.
+       */
+      onError: function (error) {
+        checkDisposed(this);
+        if (!this.isStopped) {
+          this.isStopped = true;
+          this.error = error;
+          this.hasError = true;
+          for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+            os[i].onError(error);
+          }
+
+          this.observers.length = 0;
+        }
+      },
+      /**
+       * Notifies all subscribed observers about the arrival of the specified element in the sequence.
+       * @param {Mixed} value The value to send to all observers.
+       */
+      onNext: function (value) {
+        checkDisposed(this);
+        if (!this.isStopped) {
+          for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+            os[i].onNext(value);
+          }
+        }
+      },
+      /**
+       * Unsubscribe all observers and release resources.
+       */
+      dispose: function () {
+        this.isDisposed = true;
+        this.observers = null;
+      }
+    });
+
+    /**
+     * Creates a subject from the specified observer and observable.
+     * @param {Observer} observer The observer used to send messages to the subject.
+     * @param {Observable} observable The observable used to subscribe to messages sent from the subject.
+     * @returns {Subject} Subject implemented using the given observer and observable.
+     */
+    Subject.create = function (observer, observable) {
+      return new AnonymousSubject(observer, observable);
+    };
+
+    return Subject;
+  }(Observable));
+
+  var AnonymousSubject = Rx.AnonymousSubject = (function (__super__) {
+    inherits(AnonymousSubject, __super__);
+    function AnonymousSubject(observer, observable) {
+      this.observer = observer;
+      this.observable = observable;
+      __super__.call(this);
+    }
+
+    addProperties(AnonymousSubject.prototype, Observer.prototype, {
+      _subscribe: function (o) {
+        return this.observable.subscribe(o);
+      },
+      onCompleted: function () {
+        this.observer.onCompleted();
+      },
+      onError: function (error) {
+        this.observer.onError(error);
+      },
+      onNext: function (value) {
+        this.observer.onNext(value);
+      }
+    });
+
+    return AnonymousSubject;
+  }(Observable));
+
+  /**
+   *  Represents the result of an asynchronous operation.
+   *  The last value before the OnCompleted notification, or the error received through OnError, is sent to all subscribed observers.
+   */
+  var AsyncSubject = Rx.AsyncSubject = (function (__super__) {
+    inherits(AsyncSubject, __super__);
+
+    /**
+     * Creates a subject that can only receive one value and that value is cached for all future observations.
+     * @constructor
+     */
+    function AsyncSubject() {
+      __super__.call(this);
+      this.isDisposed = false;
+      this.isStopped = false;
+      this.hasValue = false;
+      this.observers = [];
+      this.hasError = false;
+    }
+
+    addProperties(AsyncSubject.prototype, Observer.prototype, {
+      _subscribe: function (o) {
+        checkDisposed(this);
+
+        if (!this.isStopped) {
+          this.observers.push(o);
+          return new InnerSubscription(this, o);
+        }
+
+        if (this.hasError) {
+          o.onError(this.error);
+        } else if (this.hasValue) {
+          o.onNext(this.value);
+          o.onCompleted();
+        } else {
+          o.onCompleted();
+        }
+
+        return disposableEmpty;
+      },
+      /**
+       * Indicates whether the subject has observers subscribed to it.
+       * @returns {Boolean} Indicates whether the subject has observers subscribed to it.
+       */
+      hasObservers: function () { checkDisposed(this); return this.observers.length > 0; },
+      /**
+       * Notifies all subscribed observers about the end of the sequence, also causing the last received value to be sent out (if any).
+       */
+      onCompleted: function () {
+        var i, len;
+        checkDisposed(this);
+        if (!this.isStopped) {
+          this.isStopped = true;
+          var os = cloneArray(this.observers), len = os.length;
+
+          if (this.hasValue) {
+            for (i = 0; i < len; i++) {
+              var o = os[i];
+              o.onNext(this.value);
+              o.onCompleted();
+            }
+          } else {
+            for (i = 0; i < len; i++) {
+              os[i].onCompleted();
+            }
+          }
+
+          this.observers.length = 0;
+        }
+      },
+      /**
+       * Notifies all subscribed observers about the error.
+       * @param {Mixed} error The Error to send to all observers.
+       */
+      onError: function (error) {
+        checkDisposed(this);
+        if (!this.isStopped) {
+          this.isStopped = true;
+          this.hasError = true;
+          this.error = error;
+
+          for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+            os[i].onError(error);
+          }
+
+          this.observers.length = 0;
+        }
+      },
+      /**
+       * Sends a value to the subject. The last value received before successful termination will be sent to all subscribed and future observers.
+       * @param {Mixed} value The value to store in the subject.
+       */
+      onNext: function (value) {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.value = value;
+        this.hasValue = true;
+      },
+      /**
+       * Unsubscribe all observers and release resources.
+       */
+      dispose: function () {
+        this.isDisposed = true;
+        this.observers = null;
+        this.error = null;
+        this.value = null;
+      }
+    });
+
+    return AsyncSubject;
+  }(Observable));
+
+  /**
+   *  Represents a value that changes over time.
+   *  Observers can subscribe to the subject to receive the last (or initial) value and all subsequent notifications.
+   */
+  var BehaviorSubject = Rx.BehaviorSubject = (function (__super__) {
+    inherits(BehaviorSubject, __super__);
+    function BehaviorSubject(value) {
+      __super__.call(this);
+      this.value = value;
+      this.observers = [];
+      this.isDisposed = false;
+      this.isStopped = false;
+      this.hasError = false;
+    }
+
+    addProperties(BehaviorSubject.prototype, Observer.prototype, {
+      _subscribe: function (o) {
+        checkDisposed(this);
+        if (!this.isStopped) {
+          this.observers.push(o);
+          o.onNext(this.value);
+          return new InnerSubscription(this, o);
+        }
+        if (this.hasError) {
+          o.onError(this.error);
+        } else {
+          o.onCompleted();
+        }
+        return disposableEmpty;
+      },
+      /**
+       * Gets the current value or throws an exception.
+       * Value is frozen after onCompleted is called.
+       * After onError is called always throws the specified exception.
+       * An exception is always thrown after dispose is called.
+       * @returns {Mixed} The initial value passed to the constructor until onNext is called; after which, the last value passed to onNext.
+       */
+      getValue: function () {
+        checkDisposed(this);
+        if (this.hasError) { thrower(this.error); }
+        return this.value;
+      },
+      /**
+       * Indicates whether the subject has observers subscribed to it.
+       * @returns {Boolean} Indicates whether the subject has observers subscribed to it.
+       */
+      hasObservers: function () { checkDisposed(this); return this.observers.length > 0; },
+      /**
+       * Notifies all subscribed observers about the end of the sequence.
+       */
+      onCompleted: function () {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.isStopped = true;
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          os[i].onCompleted();
+        }
+
+        this.observers.length = 0;
+      },
+      /**
+       * Notifies all subscribed observers about the exception.
+       * @param {Mixed} error The exception to send to all observers.
+       */
+      onError: function (error) {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.isStopped = true;
+        this.hasError = true;
+        this.error = error;
+
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          os[i].onError(error);
+        }
+
+        this.observers.length = 0;
+      },
+      /**
+       * Notifies all subscribed observers about the arrival of the specified element in the sequence.
+       * @param {Mixed} value The value to send to all observers.
+       */
+      onNext: function (value) {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.value = value;
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          os[i].onNext(value);
+        }
+      },
+      /**
+       * Unsubscribe all observers and release resources.
+       */
+      dispose: function () {
+        this.isDisposed = true;
+        this.observers = null;
+        this.value = null;
+        this.error = null;
+      }
+    });
+
+    return BehaviorSubject;
+  }(Observable));
+
+  /**
+   * Represents an object that is both an observable sequence as well as an observer.
+   * Each notification is broadcasted to all subscribed and future observers, subject to buffer trimming policies.
+   */
+  var ReplaySubject = Rx.ReplaySubject = (function (__super__) {
+
+    var maxSafeInteger = Math.pow(2, 53) - 1;
+
+    function createRemovableDisposable(subject, observer) {
+      return disposableCreate(function () {
+        observer.dispose();
+        !subject.isDisposed && subject.observers.splice(subject.observers.indexOf(observer), 1);
+      });
+    }
+
+    inherits(ReplaySubject, __super__);
+
+    /**
+     *  Initializes a new instance of the ReplaySubject class with the specified buffer size, window size and scheduler.
+     *  @param {Number} [bufferSize] Maximum element count of the replay buffer.
+     *  @param {Number} [windowSize] Maximum time length of the replay buffer.
+     *  @param {Scheduler} [scheduler] Scheduler the observers are invoked on.
+     */
+    function ReplaySubject(bufferSize, windowSize, scheduler) {
+      this.bufferSize = bufferSize == null ? maxSafeInteger : bufferSize;
+      this.windowSize = windowSize == null ? maxSafeInteger : windowSize;
+      this.scheduler = scheduler || currentThreadScheduler;
+      this.q = [];
+      this.observers = [];
+      this.isStopped = false;
+      this.isDisposed = false;
+      this.hasError = false;
+      this.error = null;
+      __super__.call(this);
+    }
+
+    addProperties(ReplaySubject.prototype, Observer.prototype, {
+      _subscribe: function (o) {
+        checkDisposed(this);
+        var so = new ScheduledObserver(this.scheduler, o), subscription = createRemovableDisposable(this, so);
+
+        this._trim(this.scheduler.now());
+        this.observers.push(so);
+
+        for (var i = 0, len = this.q.length; i < len; i++) {
+          so.onNext(this.q[i].value);
+        }
+
+        if (this.hasError) {
+          so.onError(this.error);
+        } else if (this.isStopped) {
+          so.onCompleted();
+        }
+
+        so.ensureActive();
+        return subscription;
+      },
+      /**
+       * Indicates whether the subject has observers subscribed to it.
+       * @returns {Boolean} Indicates whether the subject has observers subscribed to it.
+       */
+      hasObservers: function () { checkDisposed(this); return this.observers.length > 0; },
+      _trim: function (now) {
+        while (this.q.length > this.bufferSize) {
+          this.q.shift();
+        }
+        while (this.q.length > 0 && (now - this.q[0].interval) > this.windowSize) {
+          this.q.shift();
+        }
+      },
+      /**
+       * Notifies all subscribed observers about the arrival of the specified element in the sequence.
+       * @param {Mixed} value The value to send to all observers.
+       */
+      onNext: function (value) {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        var now = this.scheduler.now();
+        this.q.push({ interval: now, value: value });
+        this._trim(now);
+
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          var observer = os[i];
+          observer.onNext(value);
+          observer.ensureActive();
+        }
+      },
+      /**
+       * Notifies all subscribed observers about the exception.
+       * @param {Mixed} error The exception to send to all observers.
+       */
+      onError: function (error) {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.isStopped = true;
+        this.error = error;
+        this.hasError = true;
+        var now = this.scheduler.now();
+        this._trim(now);
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          var observer = os[i];
+          observer.onError(error);
+          observer.ensureActive();
+        }
+        this.observers.length = 0;
+      },
+      /**
+       * Notifies all subscribed observers about the end of the sequence.
+       */
+      onCompleted: function () {
+        checkDisposed(this);
+        if (this.isStopped) { return; }
+        this.isStopped = true;
+        var now = this.scheduler.now();
+        this._trim(now);
+        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
+          var observer = os[i];
+          observer.onCompleted();
+          observer.ensureActive();
+        }
+        this.observers.length = 0;
+      },
+      /**
+       * Unsubscribe all observers and release resources.
+       */
+      dispose: function () {
+        this.isDisposed = true;
+        this.observers = null;
+      }
+    });
+
+    return ReplaySubject;
+  }(Observable));
+
+  var RefCountObservable = (function (__super__) {
+    inherits(RefCountObservable, __super__);
+    function RefCountObservable(source) {
+      this.source = source;
+      this._count = 0;
+      this._connectableSubscription = null;
+      __super__.call(this);
+    }
+
+    RefCountObservable.prototype.subscribeCore = function (o) {
+      var subscription = this.source.subscribe(o);
+      ++this._count === 1 && (this._connectableSubscription = this.source.connect());
+      return new RefCountDisposable(this, subscription);
+    };
+
+    function RefCountDisposable(p, s) {
+      this._p = p;
+      this._s = s;
+      this.isDisposed = false;
+    }
+
+    RefCountDisposable.prototype.dispose = function () {
+      if (!this.isDisposed) {
+        this.isDisposed = true;
+        this._s.dispose();
+        --this._p._count === 0 && this._p._connectableSubscription.dispose();
+      }
+    };
+
+    return RefCountObservable;
+  }(ObservableBase));
+
+  var ConnectableObservable = Rx.ConnectableObservable = (function (__super__) {
+    inherits(ConnectableObservable, __super__);
+    function ConnectableObservable(source, subject) {
+      this.source = source;
+      this._connection = null;
+      this._source = source.asObservable();
+      this._subject = subject;
+      __super__.call(this);
+    }
+
+    function ConnectDisposable(parent, subscription) {
+      this._p = parent;
+      this._s = subscription;
+    }
+
+    ConnectDisposable.prototype.dispose = function () {
+      if (this._s) {
+        this._s.dispose();
+        this._s = null;
+        this._p._connection = null;
+      }
+    };
+
+    ConnectableObservable.prototype.connect = function () {
+      if (!this._connection) {
+        if (this._subject.isStopped) {
+          return disposableEmpty;
+        }
+        var subscription = this._source.subscribe(this._subject);
+        this._connection = new ConnectDisposable(this, subscription);
+      }
+      return this._connection;
+    };
+
+    ConnectableObservable.prototype._subscribe = function (o) {
+      return this._subject.subscribe(o);
+    };
+
+    ConnectableObservable.prototype.refCount = function () {
+      return new RefCountObservable(this);
+    };
+
+    return ConnectableObservable;
+  }(Observable));
+
+  return Rx;
+}));

node_modules/rx/dist/rx.experimental.js

@@ -0,0 +1,590 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx'], function (Rx, exports) {
+      return factory(root, exports, Rx);
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('./rx'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  // Aliases
+  var Observable = Rx.Observable,
+    observableProto = Observable.prototype,
+    ObservableBase = Rx.ObservableBase,
+    AbstractObserver = Rx.internals.AbstractObserver,
+    FlatMapObservable = Rx.FlatMapObservable,
+    observableConcat = Observable.concat,
+    observableDefer = Observable.defer,
+    observableEmpty = Observable.empty,
+    disposableEmpty = Rx.Disposable.empty,
+    CompositeDisposable = Rx.CompositeDisposable,
+    SerialDisposable = Rx.SerialDisposable,
+    SingleAssignmentDisposable = Rx.SingleAssignmentDisposable,
+    Enumerable = Rx.internals.Enumerable,
+    enumerableOf = Enumerable.of,
+    currentThreadScheduler = Rx.Scheduler.currentThread,
+    AsyncSubject = Rx.AsyncSubject,
+    Observer = Rx.Observer,
+    inherits = Rx.internals.inherits,
+    addProperties = Rx.internals.addProperties,
+    helpers = Rx.helpers,
+    noop = helpers.noop,
+    isPromise = helpers.isPromise,
+    isFunction = helpers.isFunction,
+    isIterable = Rx.helpers.isIterable,
+    isArrayLike = Rx.helpers.isArrayLike,
+    isScheduler = Rx.Scheduler.isScheduler,
+    observableFromPromise = Observable.fromPromise;
+
+  var errorObj = {e: {}};
+  
+  function tryCatcherGen(tryCatchTarget) {
+    return function tryCatcher() {
+      try {
+        return tryCatchTarget.apply(this, arguments);
+      } catch (e) {
+        errorObj.e = e;
+        return errorObj;
+      }
+    };
+  }
+
+  var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
+    if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
+    return tryCatcherGen(fn);
+  };
+
+  function thrower(e) {
+    throw e;
+  }
+
+  // Shim in iterator support
+  var $iterator$ = (typeof Symbol === 'function' && Symbol.iterator) ||
+    '_es6shim_iterator_';
+  // Bug for mozilla version
+  if (root.Set && typeof new root.Set()['@@iterator'] === 'function') {
+    $iterator$ = '@@iterator';
+  }
+
+  var doneEnumerator = Rx.doneEnumerator = { done: true, value: undefined };
+
+  var isIterable = Rx.helpers.isIterable = function (o) {
+    return o && o[$iterator$] !== undefined;
+  };
+
+  var isArrayLike = Rx.helpers.isArrayLike = function (o) {
+    return o && o.length !== undefined;
+  };
+
+  Rx.helpers.iterator = $iterator$;
+
+  var WhileEnumerable = (function(__super__) {
+    inherits(WhileEnumerable, __super__);
+    function WhileEnumerable(c, s) {
+      this.c = c;
+      this.s = s;
+    }
+    WhileEnumerable.prototype[$iterator$] = function () {
+      var self = this;
+      return {
+        next: function () {
+          return self.c() ?
+           { done: false, value: self.s } :
+           { done: true, value: void 0 };
+        }
+      };
+    };
+    return WhileEnumerable;
+  }(Enumerable));
+  
+  function enumerableWhile(condition, source) {
+    return new WhileEnumerable(condition, source);
+  }  
+
+   /**
+   *  Returns an observable sequence that is the result of invoking the selector on the source sequence, without sharing subscriptions.
+   *  This operator allows for a fluent style of writing queries that use the same sequence multiple times.
+   *
+   * @param {Function} selector Selector function which can use the source sequence as many times as needed, without sharing subscriptions to the source sequence.
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
+   */
+  observableProto.letBind = observableProto['let'] = function (func) {
+    return func(this);
+  };
+
+   /**
+   *  Determines whether an observable collection contains values. 
+   *
+   * @example
+   *  1 - res = Rx.Observable.if(condition, obs1);
+   *  2 - res = Rx.Observable.if(condition, obs1, obs2);
+   *  3 - res = Rx.Observable.if(condition, obs1, scheduler);
+   * @param {Function} condition The condition which determines if the thenSource or elseSource will be run.
+   * @param {Observable} thenSource The observable sequence or Promise that will be run if the condition function returns true.
+   * @param {Observable} [elseSource] The observable sequence or Promise that will be run if the condition function returns false. If this is not provided, it defaults to Rx.Observabe.Empty with the specified scheduler.
+   * @returns {Observable} An observable sequence which is either the thenSource or elseSource.
+   */
+  Observable['if'] = function (condition, thenSource, elseSourceOrScheduler) {
+    return observableDefer(function () {
+      elseSourceOrScheduler || (elseSourceOrScheduler = observableEmpty());
+
+      isPromise(thenSource) && (thenSource = observableFromPromise(thenSource));
+      isPromise(elseSourceOrScheduler) && (elseSourceOrScheduler = observableFromPromise(elseSourceOrScheduler));
+
+      // Assume a scheduler for empty only
+      typeof elseSourceOrScheduler.now === 'function' && (elseSourceOrScheduler = observableEmpty(elseSourceOrScheduler));
+      return condition() ? thenSource : elseSourceOrScheduler;
+    });
+  };
+
+   /**
+   *  Concatenates the observable sequences obtained by running the specified result selector for each element in source.
+   * There is an alias for this method called 'forIn' for browsers <IE9
+   * @param {Array} sources An array of values to turn into an observable sequence.
+   * @param {Function} resultSelector A function to apply to each item in the sources array to turn it into an observable sequence.
+   * @returns {Observable} An observable sequence from the concatenated observable sequences.
+   */
+  Observable['for'] = Observable.forIn = function (sources, resultSelector, thisArg) {
+    return enumerableOf(sources, resultSelector, thisArg).concat();
+  };
+
+   /**
+   *  Repeats source as long as condition holds emulating a while loop.
+   * There is an alias for this method called 'whileDo' for browsers <IE9
+   *
+   * @param {Function} condition The condition which determines if the source will be repeated.
+   * @param {Observable} source The observable sequence that will be run if the condition function returns true.
+   * @returns {Observable} An observable sequence which is repeated as long as the condition holds.
+   */
+  var observableWhileDo = Observable['while'] = Observable.whileDo = function (condition, source) {
+    isPromise(source) && (source = observableFromPromise(source));
+    return enumerableWhile(condition, source).concat();
+  };
+
+   /**
+   *  Repeats source as long as condition holds emulating a do while loop.
+   *
+   * @param {Function} condition The condition which determines if the source will be repeated.
+   * @param {Observable} source The observable sequence that will be run if the condition function returns true.
+   * @returns {Observable} An observable sequence which is repeated as long as the condition holds.
+   */
+  observableProto.doWhile = function (condition) {
+    return observableConcat([this, observableWhileDo(condition, this)]);
+  };
+
+   /**
+   *  Uses selector to determine which source in sources to use.
+   * @param {Function} selector The function which extracts the value for to test in a case statement.
+   * @param {Array} sources A object which has keys which correspond to the case statement labels.
+   * @param {Observable} [elseSource] The observable sequence or Promise that will be run if the sources are not matched. If this is not provided, it defaults to Rx.Observabe.empty with the specified scheduler.
+   *
+   * @returns {Observable} An observable sequence which is determined by a case statement.
+   */
+  Observable['case'] = function (selector, sources, defaultSourceOrScheduler) {
+    return observableDefer(function () {
+      isPromise(defaultSourceOrScheduler) && (defaultSourceOrScheduler = observableFromPromise(defaultSourceOrScheduler));
+      defaultSourceOrScheduler || (defaultSourceOrScheduler = observableEmpty());
+
+      isScheduler(defaultSourceOrScheduler) && (defaultSourceOrScheduler = observableEmpty(defaultSourceOrScheduler));
+
+      var result = sources[selector()];
+      isPromise(result) && (result = observableFromPromise(result));
+
+      return result || defaultSourceOrScheduler;
+    });
+  };
+
+  var ExpandObservable = (function(__super__) {
+    inherits(ExpandObservable, __super__);
+    function ExpandObservable(source, fn, scheduler) {
+      this.source = source;
+      this._fn = fn;
+      this._scheduler = scheduler;
+      __super__.call(this);
+    }
+
+    function scheduleRecursive(args, recurse) {
+      var state = args[0], self = args[1];
+      var work;
+      if (state.q.length > 0) {
+        work = state.q.shift();
+      } else {
+        state.isAcquired = false;
+        return;
+      }
+      var m1 = new SingleAssignmentDisposable();
+      state.d.add(m1);
+      m1.setDisposable(work.subscribe(new ExpandObserver(state, self, m1)));
+      recurse([state, self]);
+    }
+
+    ExpandObservable.prototype._ensureActive = function (state) {
+      var isOwner = false;
+      if (state.q.length > 0) {
+        isOwner = !state.isAcquired;
+        state.isAcquired = true;
+      }
+      isOwner && state.m.setDisposable(this._scheduler.scheduleRecursive([state, this], scheduleRecursive));
+    };
+
+    ExpandObservable.prototype.subscribeCore = function (o) {
+      var m = new SerialDisposable(),
+        d = new CompositeDisposable(m),
+        state = {
+          q: [],
+          m: m,
+          d: d,
+          activeCount: 0,
+          isAcquired: false,
+          o: o
+        };
+
+      state.q.push(this.source);
+      state.activeCount++;
+      this._ensureActive(state);
+      return d;
+    };
+
+    return ExpandObservable;
+  }(ObservableBase));
+
+  var ExpandObserver = (function(__super__) {
+    inherits(ExpandObserver, __super__);
+    function ExpandObserver(state, parent, m1) {
+      this._s = state;
+      this._p = parent;
+      this._m1 = m1;
+      __super__.call(this);
+    }
+
+    ExpandObserver.prototype.next = function (x) {
+      this._s.o.onNext(x);
+      var result = tryCatch(this._p._fn)(x);
+      if (result === errorObj) { return this._s.o.onError(result.e); }
+      this._s.q.push(result);
+      this._s.activeCount++;
+      this._p._ensureActive(this._s);
+    };
+
+    ExpandObserver.prototype.error = function (e) {
+      this._s.o.onError(e);
+    };
+
+    ExpandObserver.prototype.completed = function () {
+      this._s.d.remove(this._m1);
+      this._s.activeCount--;
+      this._s.activeCount === 0 && this._s.o.onCompleted();
+    };
+
+    return ExpandObserver;
+  }(AbstractObserver));
+
+   /**
+   *  Expands an observable sequence by recursively invoking selector.
+   *
+   * @param {Function} selector Selector function to invoke for each produced element, resulting in another sequence to which the selector will be invoked recursively again.
+   * @param {Scheduler} [scheduler] Scheduler on which to perform the expansion. If not provided, this defaults to the current thread scheduler.
+   * @returns {Observable} An observable sequence containing all the elements produced by the recursive expansion.
+   */
+  observableProto.expand = function (selector, scheduler) {
+    isScheduler(scheduler) || (scheduler = currentThreadScheduler);
+    return new ExpandObservable(this, selector, scheduler);
+  };
+
+  function argumentsToArray() {
+    var len = arguments.length, args = new Array(len);
+    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
+    return args;
+  }
+
+  var ForkJoinObservable = (function (__super__) {
+    inherits(ForkJoinObservable, __super__);
+    function ForkJoinObservable(sources, cb) {
+      this._sources = sources;
+      this._cb = cb;
+      __super__.call(this);
+    }
+
+    ForkJoinObservable.prototype.subscribeCore = function (o) {
+      if (this._sources.length === 0) {
+        o.onCompleted();
+        return disposableEmpty;
+      }
+
+      var count = this._sources.length;
+      var state = {
+        finished: false,
+        hasResults: new Array(count),
+        hasCompleted: new Array(count),
+        results: new Array(count)
+      };
+
+      var subscriptions = new CompositeDisposable();
+      for (var i = 0, len = this._sources.length; i < len; i++) {
+        var source = this._sources[i];
+        isPromise(source) && (source = observableFromPromise(source));
+        subscriptions.add(source.subscribe(new ForkJoinObserver(o, state, i, this._cb, subscriptions)));
+      }
+
+      return subscriptions;
+    };
+
+    return ForkJoinObservable;
+  }(ObservableBase));
+
+  var ForkJoinObserver = (function(__super__) {
+    inherits(ForkJoinObserver, __super__);
+    function ForkJoinObserver(o, s, i, cb, subs) {
+      this._o = o;
+      this._s = s;
+      this._i = i;
+      this._cb = cb;
+      this._subs = subs;
+      __super__.call(this);
+    }
+
+    ForkJoinObserver.prototype.next = function (x) {
+      if (!this._s.finished) {
+        this._s.hasResults[this._i] = true;
+        this._s.results[this._i] = x;
+      }
+    };
+
+    ForkJoinObserver.prototype.error = function (e) {
+      this._s.finished = true;
+      this._o.onError(e);
+      this._subs.dispose();
+    };
+
+    ForkJoinObserver.prototype.completed = function () {
+      if (!this._s.finished) {
+        if (!this._s.hasResults[this._i]) {
+          return this._o.onCompleted();
+        }
+        this._s.hasCompleted[this._i] = true;
+        for (var i = 0; i < this._s.results.length; i++) {
+          if (!this._s.hasCompleted[i]) { return; }
+        }
+        this._s.finished = true;
+
+        var res = tryCatch(this._cb).apply(null, this._s.results);
+        if (res === errorObj) { return this._o.onError(res.e); }
+
+        this._o.onNext(res);
+        this._o.onCompleted();
+      }
+    };
+
+    return ForkJoinObserver;
+  }(AbstractObserver));
+
+   /**
+   *  Runs all observable sequences in parallel and collect their last elements.
+   *
+   * @example
+   *  1 - res = Rx.Observable.forkJoin([obs1, obs2]);
+   *  1 - res = Rx.Observable.forkJoin(obs1, obs2, ...);
+   * @returns {Observable} An observable sequence with an array collecting the last elements of all the input sequences.
+   */
+  Observable.forkJoin = function () {
+    var len = arguments.length, args = new Array(len);
+    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
+    var resultSelector = isFunction(args[len - 1]) ? args.pop() : argumentsToArray;
+    Array.isArray(args[0]) && (args = args[0]);
+    return new ForkJoinObservable(args, resultSelector);
+  };
+
+   /**
+   *  Runs two observable sequences in parallel and combines their last elemenets.
+   * @param {Observable} second Second observable sequence.
+   * @param {Function} resultSelector Result selector function to invoke with the last elements of both sequences.
+   * @returns {Observable} An observable sequence with the result of calling the selector function with the last elements of both input sequences.
+   */
+  observableProto.forkJoin = function () {
+    var len = arguments.length, args = new Array(len);
+    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
+    if (Array.isArray(args[0])) {
+      args[0].unshift(this);
+    } else {
+      args.unshift(this);
+    }
+    return Observable.forkJoin.apply(null, args);
+  };
+
+  /**
+   * Comonadic bind operator.
+   * @param {Function} selector A transform function to apply to each element.
+   * @param {Object} scheduler Scheduler used to execute the operation. If not specified, defaults to the ImmediateScheduler.
+   * @returns {Observable} An observable sequence which results from the comonadic bind operation.
+   */
+  observableProto.manySelect = observableProto.extend = function (selector, scheduler) {
+    isScheduler(scheduler) || (scheduler = Rx.Scheduler.immediate);
+    var source = this;
+    return observableDefer(function () {
+      var chain;
+
+      return source
+        .map(function (x) {
+          var curr = new ChainObservable(x);
+
+          chain && chain.onNext(x);
+          chain = curr;
+
+          return curr;
+        })
+        .tap(
+          noop,
+          function (e) { chain && chain.onError(e); },
+          function () { chain && chain.onCompleted(); }
+        )
+        .observeOn(scheduler)
+        .map(selector);
+    }, source);
+  };
+
+  var ChainObservable = (function (__super__) {
+    inherits(ChainObservable, __super__);
+    function ChainObservable(head) {
+      __super__.call(this);
+      this.head = head;
+      this.tail = new AsyncSubject();
+    }
+
+    addProperties(ChainObservable.prototype, Observer, {
+      _subscribe: function (o) {
+        var g = new CompositeDisposable();
+        g.add(currentThreadScheduler.schedule(this, function (_, self) {
+          o.onNext(self.head);
+          g.add(self.tail.mergeAll().subscribe(o));
+        }));
+
+        return g;
+      },
+      onCompleted: function () {
+        this.onNext(Observable.empty());
+      },
+      onError: function (e) {
+        this.onNext(Observable['throw'](e));
+      },
+      onNext: function (v) {
+        this.tail.onNext(v);
+        this.tail.onCompleted();
+      }
+    });
+
+    return ChainObservable;
+
+  }(Observable));
+
+  var SwitchFirstObservable = (function (__super__) {
+    inherits(SwitchFirstObservable, __super__);
+    function SwitchFirstObservable(source) {
+      this.source = source;
+      __super__.call(this);
+    }
+
+    SwitchFirstObservable.prototype.subscribeCore = function (o) {
+      var m = new SingleAssignmentDisposable(),
+        g = new CompositeDisposable(),
+        state = {
+          hasCurrent: false,
+          isStopped: false,
+          o: o,
+          g: g
+        };
+
+      g.add(m);
+      m.setDisposable(this.source.subscribe(new SwitchFirstObserver(state)));
+      return g;
+    };
+
+    return SwitchFirstObservable;
+  }(ObservableBase));
+
+  var SwitchFirstObserver = (function(__super__) {
+    inherits(SwitchFirstObserver, __super__);
+    function SwitchFirstObserver(state) {
+      this._s = state;
+      __super__.call(this);
+    }
+
+    SwitchFirstObserver.prototype.next = function (x) {
+      if (!this._s.hasCurrent) {
+        this._s.hasCurrent = true;
+        isPromise(x) && (x = observableFromPromise(x));
+        var inner = new SingleAssignmentDisposable();
+        this._s.g.add(inner);
+        inner.setDisposable(x.subscribe(new InnerObserver(this._s, inner)));
+      }
+    };
+
+    SwitchFirstObserver.prototype.error = function (e) {
+      this._s.o.onError(e);
+    };
+
+    SwitchFirstObserver.prototype.completed = function () {
+      this._s.isStopped = true;
+      !this._s.hasCurrent && this._s.g.length === 1 && this._s.o.onCompleted();
+    };
+
+    inherits(InnerObserver, __super__);
+    function InnerObserver(state, inner) {
+      this._s = state;
+      this._i = inner;
+      __super__.call(this);
+    }
+
+    InnerObserver.prototype.next = function (x) { this._s.o.onNext(x); };
+    InnerObserver.prototype.error = function (e) { this._s.o.onError(e); };
+    InnerObserver.prototype.completed = function () {
+      this._s.g.remove(this._i);
+      this._s.hasCurrent = false;
+      this._s.isStopped && this._s.g.length === 1 && this._s.o.onCompleted();
+    };
+
+    return SwitchFirstObserver;
+  }(AbstractObserver));
+
+  /**
+   * Performs a exclusive waiting for the first to finish before subscribing to another observable.
+   * Observables that come in between subscriptions will be dropped on the floor.
+   * @returns {Observable} A exclusive observable with only the results that happen when subscribed.
+   */
+  observableProto.switchFirst = function () {
+    return new SwitchFirstObservable(this);
+  };
+
+observableProto.flatMapFirst = observableProto.exhaustMap = function(selector, resultSelector, thisArg) {
+    return new FlatMapObservable(this, selector, resultSelector, thisArg).switchFirst();
+};
+
+observableProto.flatMapWithMaxConcurrent = observableProto.flatMapMaxConcurrent = function(limit, selector, resultSelector, thisArg) {
+    return new FlatMapObservable(this, selector, resultSelector, thisArg).merge(limit);
+};
+
+  return Rx;
+}));

node_modules/rx/dist/rx.joinpatterns.js

@@ -0,0 +1,343 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx'], function (Rx, exports) {
+      return factory(root, exports, Rx);
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('./rx'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  // Aliases
+  var Observable = Rx.Observable,
+    observableProto = Observable.prototype,
+    AnonymousObservable = Rx.AnonymousObservable,
+    observableThrow = Observable.throwError,
+    observerCreate = Rx.Observer.create,
+    SingleAssignmentDisposable = Rx.SingleAssignmentDisposable,
+    CompositeDisposable = Rx.CompositeDisposable,
+    AbstractObserver = Rx.internals.AbstractObserver,
+    noop = Rx.helpers.noop,
+    inherits = Rx.internals.inherits,
+    isFunction = Rx.helpers.isFunction;
+
+  var errorObj = {e: {}};
+  
+  function tryCatcherGen(tryCatchTarget) {
+    return function tryCatcher() {
+      try {
+        return tryCatchTarget.apply(this, arguments);
+      } catch (e) {
+        errorObj.e = e;
+        return errorObj;
+      }
+    };
+  }
+
+  var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
+    if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
+    return tryCatcherGen(fn);
+  };
+
+  function thrower(e) {
+    throw e;
+  }
+
+  var Map = root.Map || (function () {
+    function Map() {
+      this.size = 0;
+      this._values = [];
+      this._keys = [];
+    }
+
+    Map.prototype['delete'] = function (key) {
+      var i = this._keys.indexOf(key);
+      if (i === -1) { return false; }
+      this._values.splice(i, 1);
+      this._keys.splice(i, 1);
+      this.size--;
+      return true;
+    };
+
+    Map.prototype.get = function (key) {
+      var i = this._keys.indexOf(key);
+      return i === -1 ? undefined : this._values[i];
+    };
+
+    Map.prototype.set = function (key, value) {
+      var i = this._keys.indexOf(key);
+      if (i === -1) {
+        this._keys.push(key);
+        this._values.push(value);
+        this.size++;
+      } else {
+        this._values[i] = value;
+      }
+      return this;
+    };
+
+    Map.prototype.forEach = function (cb, thisArg) {
+      for (var i = 0; i < this.size; i++) {
+        cb.call(thisArg, this._values[i], this._keys[i]);
+      }
+    };
+
+    return Map;
+  }());
+
+  /**
+   * @constructor
+   * Represents a join pattern over observable sequences.
+   */
+  function Pattern(patterns) {
+    this.patterns = patterns;
+  }
+
+  /**
+   *  Creates a pattern that matches the current plan matches and when the specified observable sequences has an available value.
+   *  @param other Observable sequence to match in addition to the current pattern.
+   *  @return {Pattern} Pattern object that matches when all observable sequences in the pattern have an available value.
+   */
+  Pattern.prototype.and = function (other) {
+    return new Pattern(this.patterns.concat(other));
+  };
+
+  /**
+   *  Matches when all observable sequences in the pattern (specified using a chain of and operators) have an available value and projects the values.
+   *  @param {Function} selector Selector that will be invoked with available values from the source sequences, in the same order of the sequences in the pattern.
+   *  @return {Plan} Plan that produces the projected values, to be fed (with other plans) to the when operator.
+   */
+  Pattern.prototype.thenDo = function (selector) {
+    return new Plan(this, selector);
+  };
+
+  function Plan(expression, selector) {
+    this.expression = expression;
+    this.selector = selector;
+  }
+
+  function handleOnError(o) { return function (e) { o.onError(e); }; }
+  function handleOnNext(self, observer) {
+    return function onNext () {
+      var result = tryCatch(self.selector).apply(self, arguments);
+      if (result === errorObj) { return observer.onError(result.e); }
+      observer.onNext(result);
+    };
+  }
+
+  Plan.prototype.activate = function (externalSubscriptions, observer, deactivate) {
+    var joinObservers = [], errHandler = handleOnError(observer);
+    for (var i = 0, len = this.expression.patterns.length; i < len; i++) {
+      joinObservers.push(planCreateObserver(externalSubscriptions, this.expression.patterns[i], errHandler));
+    }
+    var activePlan = new ActivePlan(joinObservers, handleOnNext(this, observer), function () {
+      for (var j = 0, jlen = joinObservers.length; j < jlen; j++) {
+        joinObservers[j].removeActivePlan(activePlan);
+      }
+      deactivate(activePlan);
+    });
+    for (i = 0, len = joinObservers.length; i < len; i++) {
+      joinObservers[i].addActivePlan(activePlan);
+    }
+    return activePlan;
+  };
+
+  function planCreateObserver(externalSubscriptions, observable, onError) {
+    var entry = externalSubscriptions.get(observable);
+    if (!entry) {
+      var observer = new JoinObserver(observable, onError);
+      externalSubscriptions.set(observable, observer);
+      return observer;
+    }
+    return entry;
+  }
+
+  function ActivePlan(joinObserverArray, onNext, onCompleted) {
+    this.joinObserverArray = joinObserverArray;
+    this.onNext = onNext;
+    this.onCompleted = onCompleted;
+    this.joinObservers = new Map();
+    for (var i = 0, len = this.joinObserverArray.length; i < len; i++) {
+      var joinObserver = this.joinObserverArray[i];
+      this.joinObservers.set(joinObserver, joinObserver);
+    }
+  }
+
+  ActivePlan.prototype.dequeue = function () {
+    this.joinObservers.forEach(function (v) { v.queue.shift(); });
+  };
+
+  ActivePlan.prototype.match = function () {
+    var i, len, hasValues = true;
+    for (i = 0, len = this.joinObserverArray.length; i < len; i++) {
+      if (this.joinObserverArray[i].queue.length === 0) {
+        hasValues = false;
+        break;
+      }
+    }
+    if (hasValues) {
+      var firstValues = [],
+          isCompleted = false;
+      for (i = 0, len = this.joinObserverArray.length; i < len; i++) {
+        firstValues.push(this.joinObserverArray[i].queue[0]);
+        this.joinObserverArray[i].queue[0].kind === 'C' && (isCompleted = true);
+      }
+      if (isCompleted) {
+        this.onCompleted();
+      } else {
+        this.dequeue();
+        var values = [];
+        for (i = 0, len = firstValues.length; i < firstValues.length; i++) {
+          values.push(firstValues[i].value);
+        }
+        this.onNext.apply(this, values);
+      }
+    }
+  };
+
+  var JoinObserver = (function (__super__) {
+    inherits(JoinObserver, __super__);
+
+    function JoinObserver(source, onError) {
+      __super__.call(this);
+      this.source = source;
+      this.onError = onError;
+      this.queue = [];
+      this.activePlans = [];
+      this.subscription = new SingleAssignmentDisposable();
+      this.isDisposed = false;
+    }
+
+    var JoinObserverPrototype = JoinObserver.prototype;
+
+    JoinObserverPrototype.next = function (notification) {
+      if (!this.isDisposed) {
+        if (notification.kind === 'E') {
+          return this.onError(notification.error);
+        }
+        this.queue.push(notification);
+        var activePlans = this.activePlans.slice(0);
+        for (var i = 0, len = activePlans.length; i < len; i++) {
+          activePlans[i].match();
+        }
+      }
+    };
+
+    JoinObserverPrototype.error = noop;
+    JoinObserverPrototype.completed = noop;
+
+    JoinObserverPrototype.addActivePlan = function (activePlan) {
+      this.activePlans.push(activePlan);
+    };
+
+    JoinObserverPrototype.subscribe = function () {
+      this.subscription.setDisposable(this.source.materialize().subscribe(this));
+    };
+
+    JoinObserverPrototype.removeActivePlan = function (activePlan) {
+      this.activePlans.splice(this.activePlans.indexOf(activePlan), 1);
+      this.activePlans.length === 0 && this.dispose();
+    };
+
+    JoinObserverPrototype.dispose = function () {
+      __super__.prototype.dispose.call(this);
+      if (!this.isDisposed) {
+        this.isDisposed = true;
+        this.subscription.dispose();
+      }
+    };
+
+    return JoinObserver;
+  } (AbstractObserver));
+
+  /**
+   *  Creates a pattern that matches when both observable sequences have an available value.
+   *
+   *  @param right Observable sequence to match with the current sequence.
+   *  @return {Pattern} Pattern object that matches when both observable sequences have an available value.
+   */
+  observableProto.and = function (right) {
+    return new Pattern([this, right]);
+  };
+
+  /**
+   *  Matches when the observable sequence has an available value and projects the value.
+   *
+   *  @param {Function} selector Selector that will be invoked for values in the source sequence.
+   *  @returns {Plan} Plan that produces the projected values, to be fed (with other plans) to the when operator.
+   */
+  observableProto.thenDo = function (selector) {
+    return new Pattern([this]).thenDo(selector);
+  };
+
+  /**
+   *  Joins together the results from several patterns.
+   *
+   *  @param plans A series of plans (specified as an Array of as a series of arguments) created by use of the Then operator on patterns.
+   *  @returns {Observable} Observable sequence with the results form matching several patterns.
+   */
+  Observable.when = function () {
+    var len = arguments.length, plans;
+    if (Array.isArray(arguments[0])) {
+      plans = arguments[0];
+    } else {
+      plans = new Array(len);
+      for(var i = 0; i < len; i++) { plans[i] = arguments[i]; }
+    }
+    return new AnonymousObservable(function (o) {
+      var activePlans = [],
+          externalSubscriptions = new Map();
+      var outObserver = observerCreate(
+        function (x) { o.onNext(x); },
+        function (err) {
+          externalSubscriptions.forEach(function (v) { v.onError(err); });
+          o.onError(err);
+        },
+        function (x) { o.onCompleted(); }
+      );
+      try {
+        for (var i = 0, len = plans.length; i < len; i++) {
+          activePlans.push(plans[i].activate(externalSubscriptions, outObserver, function (activePlan) {
+            var idx = activePlans.indexOf(activePlan);
+            activePlans.splice(idx, 1);
+            activePlans.length === 0 && o.onCompleted();
+          }));
+        }
+      } catch (e) {
+        return observableThrow(e).subscribe(o);
+      }
+      var group = new CompositeDisposable();
+      externalSubscriptions.forEach(function (joinObserver) {
+        joinObserver.subscribe();
+        group.add(joinObserver);
+      });
+
+      return group;
+    });
+  };
+
+  return Rx;
+}));

node_modules/rx/dist/rx.joinpatterns.min.js

@@ -0,0 +1,3 @@
+/* Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.*/
+(function(a){function b(a){return a&&a.Object===Object?a:null}var c={"function":!0,object:!0},d=c[typeof exports]&&exports&&!exports.nodeType?exports:null,e=c[typeof module]&&module&&!module.nodeType?module:null,f=b(d&&e&&"object"==typeof global&&global),g=b(c[typeof self]&&self),h=b(c[typeof window]&&window),i=(e&&e.exports===d?d:null,b(c[typeof this]&&this)),j=f||h!==(i&&i.window)&&h||g||i||Function("return this")();"function"==typeof define&&define.amd?define(["./rx"],function(b,c){return a(j,c,b)}):"object"==typeof module&&module&&module.exports===d?module.exports=a(j,module.exports,require("./rx")):j.Rx=a(j,{},j.Rx)}).call(this,function(a,b,c,d){function e(a){return function(){try{return a.apply(this,arguments)}catch(b){return w.e=b,w}}}function f(a){this.patterns=a}function g(a,b){this.expression=a,this.selector=b}function h(a){return function(b){a.onError(b)}}function i(a,b){return function(){var c=x(a.selector).apply(a,arguments);return c===w?b.onError(c.e):void b.onNext(c)}}function j(a,b,c){var d=a.get(b);if(!d){var e=new z(b,c);return a.set(b,e),e}return d}function k(a,b,c){this.joinObserverArray=a,this.onNext=b,this.onCompleted=c,this.joinObservers=new y;for(var d=0,e=this.joinObserverArray.length;e>d;d++){var f=this.joinObserverArray[d];this.joinObservers.set(f,f)}}var l=c.Observable,m=l.prototype,n=c.AnonymousObservable,o=l.throwError,p=c.Observer.create,q=c.SingleAssignmentDisposable,r=c.CompositeDisposable,s=c.internals.AbstractObserver,t=c.helpers.noop,u=c.internals.inherits,v=c.helpers.isFunction,w={e:{}},x=c.internals.tryCatch=function(a){if(!v(a))throw new TypeError("fn must be a function");return e(a)},y=a.Map||function(){function a(){this.size=0,this._values=[],this._keys=[]}return a.prototype["delete"]=function(a){var b=this._keys.indexOf(a);return-1===b?!1:(this._values.splice(b,1),this._keys.splice(b,1),this.size--,!0)},a.prototype.get=function(a){var b=this._keys.indexOf(a);return-1===b?d:this._values[b]},a.prototype.set=function(a,b){var c=this._keys.indexOf(a);return-1===c?(this._keys.push(a),this._values.push(b),this.size++):this._values[c]=b,this},a.prototype.forEach=function(a,b){for(var c=0;c<this.size;c++)a.call(b,this._values[c],this._keys[c])},a}();f.prototype.and=function(a){return new f(this.patterns.concat(a))},f.prototype.thenDo=function(a){return new g(this,a)},g.prototype.activate=function(a,b,c){for(var d=[],e=h(b),f=0,g=this.expression.patterns.length;g>f;f++)d.push(j(a,this.expression.patterns[f],e));var l=new k(d,i(this,b),function(){for(var a=0,b=d.length;b>a;a++)d[a].removeActivePlan(l);c(l)});for(f=0,g=d.length;g>f;f++)d[f].addActivePlan(l);return l},k.prototype.dequeue=function(){this.joinObservers.forEach(function(a){a.queue.shift()})},k.prototype.match=function(){var a,b,c=!0;for(a=0,b=this.joinObserverArray.length;b>a;a++)if(0===this.joinObserverArray[a].queue.length){c=!1;break}if(c){var d=[],e=!1;for(a=0,b=this.joinObserverArray.length;b>a;a++)d.push(this.joinObserverArray[a].queue[0]),"C"===this.joinObserverArray[a].queue[0].kind&&(e=!0);if(e)this.onCompleted();else{this.dequeue();var f=[];for(a=0,b=d.length;a<d.length;a++)f.push(d[a].value);this.onNext.apply(this,f)}}};var z=function(a){function b(b,c){a.call(this),this.source=b,this.onError=c,this.queue=[],this.activePlans=[],this.subscription=new q,this.isDisposed=!1}u(b,a);var c=b.prototype;return c.next=function(a){if(!this.isDisposed){if("E"===a.kind)return this.onError(a.error);this.queue.push(a);for(var b=this.activePlans.slice(0),c=0,d=b.length;d>c;c++)b[c].match()}},c.error=t,c.completed=t,c.addActivePlan=function(a){this.activePlans.push(a)},c.subscribe=function(){this.subscription.setDisposable(this.source.materialize().subscribe(this))},c.removeActivePlan=function(a){this.activePlans.splice(this.activePlans.indexOf(a),1),0===this.activePlans.length&&this.dispose()},c.dispose=function(){a.prototype.dispose.call(this),this.isDisposed||(this.isDisposed=!0,this.subscription.dispose())},b}(s);return m.and=function(a){return new f([this,a])},m.thenDo=function(a){return new f([this]).thenDo(a)},l.when=function(){var a,b=arguments.length;if(Array.isArray(arguments[0]))a=arguments[0];else{a=new Array(b);for(var c=0;b>c;c++)a[c]=arguments[c]}return new n(function(b){var c=[],d=new y,e=p(function(a){b.onNext(a)},function(a){d.forEach(function(b){b.onError(a)}),b.onError(a)},function(a){b.onCompleted()});try{for(var f=0,g=a.length;g>f;f++)c.push(a[f].activate(d,e,function(a){var d=c.indexOf(a);c.splice(d,1),0===c.length&&b.onCompleted()}))}catch(h){return o(h).subscribe(b)}var i=new r;return d.forEach(function(a){a.subscribe(),i.add(a)}),i})},c});
+//# sourceMappingURL=rx.joinpatterns.map

node_modules/rx/dist/rx.lite.extras.compat.js

@@ -0,0 +1,806 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx.lite.compat'], function (Rx, exports) {
+      return factory(root, exports, Rx);
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('rx-lite-compat'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  // References
+  var Observable = Rx.Observable,
+    observableProto = Observable.prototype,
+    observableNever = Observable.never,
+    observableThrow = Observable['throw'],
+    AnonymousObservable = Rx.AnonymousObservable,
+    ObservableBase = Rx.ObservableBase,
+    AnonymousObserver = Rx.AnonymousObserver,
+    notificationCreateOnNext = Rx.Notification.createOnNext,
+    notificationCreateOnError = Rx.Notification.createOnError,
+    notificationCreateOnCompleted = Rx.Notification.createOnCompleted,
+    Observer = Rx.Observer,
+    observerCreate = Observer.create,
+    AbstractObserver = Rx.internals.AbstractObserver,
+    Subject = Rx.Subject,
+    internals = Rx.internals,
+    helpers = Rx.helpers,
+    ScheduledObserver = internals.ScheduledObserver,
+    SerialDisposable = Rx.SerialDisposable,
+    SingleAssignmentDisposable = Rx.SingleAssignmentDisposable,
+    CompositeDisposable = Rx.CompositeDisposable,
+    BinaryDisposable = Rx.BinaryDisposable,
+    RefCountDisposable = Rx.RefCountDisposable,
+    disposableEmpty = Rx.Disposable.empty,
+    immediateScheduler = Rx.Scheduler.immediate,
+    defaultKeySerializer = helpers.defaultKeySerializer,
+    addRef = Rx.internals.addRef,
+    identity = helpers.identity,
+    isPromise = helpers.isPromise,
+    isFunction = helpers.isFunction,
+    inherits = internals.inherits,
+    bindCallback = internals.bindCallback,
+    noop = helpers.noop,
+    isScheduler = Rx.Scheduler.isScheduler,
+    observableFromPromise = Observable.fromPromise,
+    ArgumentOutOfRangeError = Rx.ArgumentOutOfRangeError;
+
+  var errorObj = {e: {}};
+  
+  function tryCatcherGen(tryCatchTarget) {
+    return function tryCatcher() {
+      try {
+        return tryCatchTarget.apply(this, arguments);
+      } catch (e) {
+        errorObj.e = e;
+        return errorObj;
+      }
+    };
+  }
+
+  var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
+    if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
+    return tryCatcherGen(fn);
+  };
+
+  function thrower(e) {
+    throw e;
+  }
+
+  function ScheduledDisposable(scheduler, disposable) {
+    this.scheduler = scheduler;
+    this.disposable = disposable;
+    this.isDisposed = false;
+  }
+
+  function scheduleItem(s, self) {
+    if (!self.isDisposed) {
+      self.isDisposed = true;
+      self.disposable.dispose();
+    }
+  }
+
+  ScheduledDisposable.prototype.dispose = function () {
+    this.scheduler.schedule(this, scheduleItem);
+  };
+
+  var CheckedObserver = (function (__super__) {
+    inherits(CheckedObserver, __super__);
+
+    function CheckedObserver(observer) {
+      __super__.call(this);
+      this._observer = observer;
+      this._state = 0; // 0 - idle, 1 - busy, 2 - done
+    }
+
+    var CheckedObserverPrototype = CheckedObserver.prototype;
+
+    CheckedObserverPrototype.onNext = function (value) {
+      this.checkAccess();
+      var res = tryCatch(this._observer.onNext).call(this._observer, value);
+      this._state = 0;
+      res === errorObj && thrower(res.e);
+    };
+
+    CheckedObserverPrototype.onError = function (err) {
+      this.checkAccess();
+      var res = tryCatch(this._observer.onError).call(this._observer, err);
+      this._state = 2;
+      res === errorObj && thrower(res.e);
+    };
+
+    CheckedObserverPrototype.onCompleted = function () {
+      this.checkAccess();
+      var res = tryCatch(this._observer.onCompleted).call(this._observer);
+      this._state = 2;
+      res === errorObj && thrower(res.e);
+    };
+
+    CheckedObserverPrototype.checkAccess = function () {
+      if (this._state === 1) { throw new Error('Re-entrancy detected'); }
+      if (this._state === 2) { throw new Error('Observer completed'); }
+      if (this._state === 0) { this._state = 1; }
+    };
+
+    return CheckedObserver;
+  }(Observer));
+
+  var ObserveOnObserver = (function (__super__) {
+    inherits(ObserveOnObserver, __super__);
+
+    function ObserveOnObserver(scheduler, observer, cancel) {
+      __super__.call(this, scheduler, observer);
+      this._cancel = cancel;
+    }
+
+    ObserveOnObserver.prototype.next = function (value) {
+      __super__.prototype.next.call(this, value);
+      this.ensureActive();
+    };
+
+    ObserveOnObserver.prototype.error = function (e) {
+      __super__.prototype.error.call(this, e);
+      this.ensureActive();
+    };
+
+    ObserveOnObserver.prototype.completed = function () {
+      __super__.prototype.completed.call(this);
+      this.ensureActive();
+    };
+
+    ObserveOnObserver.prototype.dispose = function () {
+      __super__.prototype.dispose.call(this);
+      this._cancel && this._cancel.dispose();
+      this._cancel = null;
+    };
+
+    return ObserveOnObserver;
+  })(ScheduledObserver);
+
+  /**
+   *  Checks access to the observer for grammar violations. This includes checking for multiple OnError or OnCompleted calls, as well as reentrancy in any of the observer methods.
+   *  If a violation is detected, an Error is thrown from the offending observer method call.
+   *
+   * @returns An observer that checks callbacks invocations against the observer grammar and, if the checks pass, forwards those to the specified observer.
+   */
+  Observer.prototype.checked = function () { return new CheckedObserver(this); };
+
+  /**
+   * Schedules the invocation of observer methods on the given scheduler.
+   * @param {Scheduler} scheduler Scheduler to schedule observer messages on.
+   * @returns {Observer} Observer whose messages are scheduled on the given scheduler.
+   */
+  Observer.notifyOn = function (scheduler) {
+    return new ObserveOnObserver(scheduler, this);
+  };
+
+  /**
+  *  Creates an observer from a notification callback.
+  * @param {Function} handler Action that handles a notification.
+  * @returns The observer object that invokes the specified handler using a notification corresponding to each message it receives.
+  */
+  Observer.fromNotifier = function (handler, thisArg) {
+    var handlerFunc = bindCallback(handler, thisArg, 1);
+    return new AnonymousObserver(function (x) {
+      return handlerFunc(notificationCreateOnNext(x));
+    }, function (e) {
+      return handlerFunc(notificationCreateOnError(e));
+    }, function () {
+      return handlerFunc(notificationCreateOnCompleted());
+    });
+  };
+
+  /**
+  *  Creates a notification callback from an observer.
+  * @returns The action that forwards its input notification to the underlying observer.
+  */
+  Observer.prototype.toNotifier = function () {
+    var observer = this;
+    return function (n) { return n.accept(observer); };
+  };
+
+  /**
+  *  Hides the identity of an observer.
+  * @returns An observer that hides the identity of the specified observer.
+  */
+  Observer.prototype.asObserver = function () {
+    var source = this;
+    return new AnonymousObserver(
+      function (x) { source.onNext(x); },
+      function (e) { source.onError(e); },
+      function () { source.onCompleted(); }
+    );
+  };
+
+var ObserveOnObservable = (function (__super__) {
+  inherits(ObserveOnObservable, __super__);
+  function ObserveOnObservable(source, s) {
+    this.source = source;
+    this._s = s;
+    __super__.call(this);
+  }
+
+  ObserveOnObservable.prototype.subscribeCore = function (o) {
+    return this.source.subscribe(new ObserveOnObserver(this._s, o));
+  };
+
+  return ObserveOnObservable;
+}(ObservableBase));
+
+   /**
+   *  Wraps the source sequence in order to run its observer callbacks on the specified scheduler.
+   *
+   *  This only invokes observer callbacks on a scheduler. In case the subscription and/or unsubscription actions have side-effects
+   *  that require to be run on a scheduler, use subscribeOn.
+   *
+   *  @param {Scheduler} scheduler Scheduler to notify observers on.
+   *  @returns {Observable} The source sequence whose observations happen on the specified scheduler.
+   */
+  observableProto.observeOn = function (scheduler) {
+    return new ObserveOnObservable(this, scheduler);
+  };
+
+  var SubscribeOnObservable = (function (__super__) {
+    inherits(SubscribeOnObservable, __super__);
+    function SubscribeOnObservable(source, s) {
+      this.source = source;
+      this._s = s;
+      __super__.call(this);
+    }
+
+    function scheduleMethod(scheduler, state) {
+      var source = state[0], d = state[1], o = state[2];
+      d.setDisposable(new ScheduledDisposable(scheduler, source.subscribe(o)));
+    }
+
+    SubscribeOnObservable.prototype.subscribeCore = function (o) {
+      var m = new SingleAssignmentDisposable(), d = new SerialDisposable();
+      d.setDisposable(m);
+      m.setDisposable(this._s.schedule([this.source, d, o], scheduleMethod));
+      return d;
+    };
+
+    return SubscribeOnObservable;
+  }(ObservableBase));
+
+   /**
+   *  Wraps the source sequence in order to run its subscription and unsubscription logic on the specified scheduler. This operation is not commonly used;
+   *  see the remarks section for more information on the distinction between subscribeOn and observeOn.
+
+   *  This only performs the side-effects of subscription and unsubscription on the specified scheduler. In order to invoke observer
+   *  callbacks on a scheduler, use observeOn.
+
+   *  @param {Scheduler} scheduler Scheduler to perform subscription and unsubscription actions on.
+   *  @returns {Observable} The source sequence whose subscriptions and unsubscriptions happen on the specified scheduler.
+   */
+  observableProto.subscribeOn = function (scheduler) {
+    return new SubscribeOnObservable(this, scheduler);
+  };
+
+  var GenerateObservable = (function (__super__) {
+    inherits(GenerateObservable, __super__);
+    function GenerateObservable(state, cndFn, itrFn, resFn, s) {
+      this._initialState = state;
+      this._cndFn = cndFn;
+      this._itrFn = itrFn;
+      this._resFn = resFn;
+      this._s = s;
+      __super__.call(this);
+    }
+
+    function scheduleRecursive(state, recurse) {
+      if (state.first) {
+        state.first = false;
+      } else {
+        state.newState = tryCatch(state.self._itrFn)(state.newState);
+        if (state.newState === errorObj) { return state.o.onError(state.newState.e); }
+      }
+      var hasResult = tryCatch(state.self._cndFn)(state.newState);
+      if (hasResult === errorObj) { return state.o.onError(hasResult.e); }
+      if (hasResult) {
+        var result = tryCatch(state.self._resFn)(state.newState);
+        if (result === errorObj) { return state.o.onError(result.e); }
+        state.o.onNext(result);
+        recurse(state);
+      } else {
+        state.o.onCompleted();
+      }
+    }
+
+    GenerateObservable.prototype.subscribeCore = function (o) {
+      var state = {
+        o: o,
+        self: this,
+        first: true,
+        newState: this._initialState
+      };
+      return this._s.scheduleRecursive(state, scheduleRecursive);
+    };
+
+    return GenerateObservable;
+  }(ObservableBase));
+
+  /**
+   *  Generates an observable sequence by running a state-driven loop producing the sequence's elements, using the specified scheduler to send out observer messages.
+   *
+   * @example
+   *  var res = Rx.Observable.generate(0, function (x) { return x < 10; }, function (x) { return x + 1; }, function (x) { return x; });
+   *  var res = Rx.Observable.generate(0, function (x) { return x < 10; }, function (x) { return x + 1; }, function (x) { return x; }, Rx.Scheduler.timeout);
+   * @param {Mixed} initialState Initial state.
+   * @param {Function} condition Condition to terminate generation (upon returning false).
+   * @param {Function} iterate Iteration step function.
+   * @param {Function} resultSelector Selector function for results produced in the sequence.
+   * @param {Scheduler} [scheduler] Scheduler on which to run the generator loop. If not provided, defaults to Scheduler.currentThread.
+   * @returns {Observable} The generated sequence.
+   */
+  Observable.generate = function (initialState, condition, iterate, resultSelector, scheduler) {
+    isScheduler(scheduler) || (scheduler = currentThreadScheduler);
+    return new GenerateObservable(initialState, condition, iterate, resultSelector, scheduler);
+  };
+
+  var UsingObservable = (function (__super__) {
+    inherits(UsingObservable, __super__);
+    function UsingObservable(resFn, obsFn) {
+      this._resFn = resFn;
+      this._obsFn = obsFn;
+      __super__.call(this);
+    }
+
+    UsingObservable.prototype.subscribeCore = function (o) {
+      var disposable = disposableEmpty;
+      var resource = tryCatch(this._resFn)();
+      if (resource === errorObj) {
+        return new BinaryDisposable(observableThrow(resource.e).subscribe(o), disposable);
+      }
+      resource && (disposable = resource);
+      var source = tryCatch(this._obsFn)(resource);
+      if (source === errorObj) {
+        return new BinaryDisposable(observableThrow(source.e).subscribe(o), disposable);
+      }
+      return new BinaryDisposable(source.subscribe(o), disposable);
+    };
+
+    return UsingObservable;
+  }(ObservableBase));
+
+  /**
+   * Constructs an observable sequence that depends on a resource object, whose lifetime is tied to the resulting observable sequence's lifetime.
+   * @param {Function} resourceFactory Factory function to obtain a resource object.
+   * @param {Function} observableFactory Factory function to obtain an observable sequence that depends on the obtained resource.
+   * @returns {Observable} An observable sequence whose lifetime controls the lifetime of the dependent resource object.
+   */
+  Observable.using = function (resourceFactory, observableFactory) {
+    return new UsingObservable(resourceFactory, observableFactory);
+  };
+
+  /**
+   * Propagates the observable sequence or Promise that reacts first.
+   * @param {Observable} rightSource Second observable sequence or Promise.
+   * @returns {Observable} {Observable} An observable sequence that surfaces either of the given sequences, whichever reacted first.
+   */
+  observableProto.amb = function (rightSource) {
+    var leftSource = this;
+    return new AnonymousObservable(function (observer) {
+      var choice,
+        leftChoice = 'L', rightChoice = 'R',
+        leftSubscription = new SingleAssignmentDisposable(),
+        rightSubscription = new SingleAssignmentDisposable();
+
+      isPromise(rightSource) && (rightSource = observableFromPromise(rightSource));
+
+      function choiceL() {
+        if (!choice) {
+          choice = leftChoice;
+          rightSubscription.dispose();
+        }
+      }
+
+      function choiceR() {
+        if (!choice) {
+          choice = rightChoice;
+          leftSubscription.dispose();
+        }
+      }
+
+      var leftSubscribe = observerCreate(
+        function (left) {
+          choiceL();
+          choice === leftChoice && observer.onNext(left);
+        },
+        function (e) {
+          choiceL();
+          choice === leftChoice && observer.onError(e);
+        },
+        function () {
+          choiceL();
+          choice === leftChoice && observer.onCompleted();
+        }
+      );
+      var rightSubscribe = observerCreate(
+        function (right) {
+          choiceR();
+          choice === rightChoice && observer.onNext(right);
+        },
+        function (e) {
+          choiceR();
+          choice === rightChoice && observer.onError(e);
+        },
+        function () {
+          choiceR();
+          choice === rightChoice && observer.onCompleted();
+        }
+      );
+
+      leftSubscription.setDisposable(leftSource.subscribe(leftSubscribe));
+      rightSubscription.setDisposable(rightSource.subscribe(rightSubscribe));
+
+      return new BinaryDisposable(leftSubscription, rightSubscription);
+    });
+  };
+
+  function amb(p, c) { return p.amb(c); }
+
+  /**
+   * Propagates the observable sequence or Promise that reacts first.
+   * @returns {Observable} An observable sequence that surfaces any of the given sequences, whichever reacted first.
+   */
+  Observable.amb = function () {
+    var acc = observableNever(), items;
+    if (Array.isArray(arguments[0])) {
+      items = arguments[0];
+    } else {
+      var len = arguments.length;
+      items = new Array(items);
+      for(var i = 0; i < len; i++) { items[i] = arguments[i]; }
+    }
+    for (var i = 0, len = items.length; i < len; i++) {
+      acc = amb(acc, items[i]);
+    }
+    return acc;
+  };
+
+  /**
+   * Continues an observable sequence that is terminated normally or by an exception with the next observable sequence.
+   * @param {Observable} second Second observable sequence used to produce results after the first sequence terminates.
+   * @returns {Observable} An observable sequence that concatenates the first and second sequence, even if the first sequence terminates exceptionally.
+   */
+  observableProto.onErrorResumeNext = function (second) {
+    if (!second) { throw new Error('Second observable is required'); }
+    return onErrorResumeNext([this, second]);
+  };
+
+  var OnErrorResumeNextObservable = (function(__super__) {
+    inherits(OnErrorResumeNextObservable, __super__);
+    function OnErrorResumeNextObservable(sources) {
+      this.sources = sources;
+      __super__.call(this);
+    }
+
+    function scheduleMethod(state, recurse) {
+      if (state.pos < state.sources.length) {
+        var current = state.sources[state.pos++];
+        isPromise(current) && (current = observableFromPromise(current));
+        var d = new SingleAssignmentDisposable();
+        state.subscription.setDisposable(d);
+        d.setDisposable(current.subscribe(new OnErrorResumeNextObserver(state, recurse)));
+      } else {
+        state.o.onCompleted();
+      }
+    }
+
+    OnErrorResumeNextObservable.prototype.subscribeCore = function (o) {
+      var subscription = new SerialDisposable(),
+          state = {pos: 0, subscription: subscription, o: o, sources: this.sources },
+          cancellable = immediateScheduler.scheduleRecursive(state, scheduleMethod);
+
+      return new BinaryDisposable(subscription, cancellable);
+    };
+
+    return OnErrorResumeNextObservable;
+  }(ObservableBase));
+
+  var OnErrorResumeNextObserver = (function(__super__) {
+    inherits(OnErrorResumeNextObserver, __super__);
+    function OnErrorResumeNextObserver(state, recurse) {
+      this._state = state;
+      this._recurse = recurse;
+      __super__.call(this);
+    }
+
+    OnErrorResumeNextObserver.prototype.next = function (x) { this._state.o.onNext(x); };
+    OnErrorResumeNextObserver.prototype.error = function () { this._recurse(this._state); };
+    OnErrorResumeNextObserver.prototype.completed = function () { this._recurse(this._state); };
+
+    return OnErrorResumeNextObserver;
+  }(AbstractObserver));
+
+  /**
+   * Continues an observable sequence that is terminated normally or by an exception with the next observable sequence.
+   * @returns {Observable} An observable sequence that concatenates the source sequences, even if a sequence terminates exceptionally.
+   */
+  var onErrorResumeNext = Observable.onErrorResumeNext = function () {
+    var sources = [];
+    if (Array.isArray(arguments[0])) {
+      sources = arguments[0];
+    } else {
+      var len = arguments.length;
+      sources = new Array(len);
+      for(var i = 0; i < len; i++) { sources[i] = arguments[i]; }
+    }
+    return new OnErrorResumeNextObservable(sources);
+  };
+
+  function toArray(x) { return x.toArray(); }
+  function notEmpty(x) { return x.length > 0; }
+
+  /**
+   *  Projects each element of an observable sequence into zero or more buffers which are produced based on element count information.
+   * @param {Number} count Length of each buffer.
+   * @param {Number} [skip] Number of elements to skip between creation of consecutive buffers. If not provided, defaults to the count.
+   * @returns {Observable} An observable sequence of buffers.
+   */
+  observableProto.bufferWithCount = observableProto.bufferCount = function (count, skip) {
+    typeof skip !== 'number' && (skip = count);
+    return this.windowWithCount(count, skip)
+      .flatMap(toArray)
+      .filter(notEmpty);
+  };
+
+  /**
+   *  Projects each element of an observable sequence into zero or more windows which are produced based on element count information.
+   * @param {Number} count Length of each window.
+   * @param {Number} [skip] Number of elements to skip between creation of consecutive windows. If not specified, defaults to the count.
+   * @returns {Observable} An observable sequence of windows.
+   */
+  observableProto.windowWithCount = observableProto.windowCount = function (count, skip) {
+    var source = this;
+    +count || (count = 0);
+    Math.abs(count) === Infinity && (count = 0);
+    if (count <= 0) { throw new ArgumentOutOfRangeError(); }
+    skip == null && (skip = count);
+    +skip || (skip = 0);
+    Math.abs(skip) === Infinity && (skip = 0);
+
+    if (skip <= 0) { throw new ArgumentOutOfRangeError(); }
+    return new AnonymousObservable(function (observer) {
+      var m = new SingleAssignmentDisposable(),
+        refCountDisposable = new RefCountDisposable(m),
+        n = 0,
+        q = [];
+
+      function createWindow () {
+        var s = new Subject();
+        q.push(s);
+        observer.onNext(addRef(s, refCountDisposable));
+      }
+
+      createWindow();
+
+      m.setDisposable(source.subscribe(
+        function (x) {
+          for (var i = 0, len = q.length; i < len; i++) { q[i].onNext(x); }
+          var c = n - count + 1;
+          c >= 0 && c % skip === 0 && q.shift().onCompleted();
+          ++n % skip === 0 && createWindow();
+        },
+        function (e) {
+          while (q.length > 0) { q.shift().onError(e); }
+          observer.onError(e);
+        },
+        function () {
+          while (q.length > 0) { q.shift().onCompleted(); }
+          observer.onCompleted();
+        }
+      ));
+      return refCountDisposable;
+    }, source);
+  };
+
+  var TakeLastBufferObserver = (function (__super__) {
+    inherits(TakeLastBufferObserver, __super__);
+    function TakeLastBufferObserver(o, c) {
+      this._o = o;
+      this._c = c;
+      this._q = [];
+      __super__.call(this);
+    }
+
+    TakeLastBufferObserver.prototype.next = function (x) {
+      this._q.push(x);
+      this._q.length > this._c && this._q.shift();
+    };
+
+    TakeLastBufferObserver.prototype.error = function (e) {
+      this._o.onError(e);
+    };
+
+    TakeLastBufferObserver.prototype.completed = function () {
+      this._o.onNext(this._q);
+      this._o.onCompleted();
+    };
+
+    return TakeLastBufferObserver;
+  }(AbstractObserver));
+
+  /**
+   *  Returns an array with the specified number of contiguous elements from the end of an observable sequence.
+   *
+   * @description
+   *  This operator accumulates a buffer with a length enough to store count elements. Upon completion of the
+   *  source sequence, this buffer is produced on the result sequence.
+   * @param {Number} count Number of elements to take from the end of the source sequence.
+   * @returns {Observable} An observable sequence containing a single array with the specified number of elements from the end of the source sequence.
+   */
+  observableProto.takeLastBuffer = function (count) {
+    if (count < 0) { throw new ArgumentOutOfRangeError(); }
+    var source = this;
+    return new AnonymousObservable(function (o) {
+      return source.subscribe(new TakeLastBufferObserver(o, count));
+    }, source);
+  };
+
+  var DefaultIfEmptyObserver = (function (__super__) {
+    inherits(DefaultIfEmptyObserver, __super__);
+    function DefaultIfEmptyObserver(o, d) {
+      this._o = o;
+      this._d = d;
+      this._f = false;
+      __super__.call(this);
+    }
+
+    DefaultIfEmptyObserver.prototype.next = function (x) {
+      this._f = true;
+      this._o.onNext(x);
+    };
+
+    DefaultIfEmptyObserver.prototype.error = function (e) {
+      this._o.onError(e);
+    };
+
+    DefaultIfEmptyObserver.prototype.completed = function () {
+      !this._f && this._o.onNext(this._d);
+      this._o.onCompleted();
+    };
+
+    return DefaultIfEmptyObserver;
+  }(AbstractObserver));
+
+  /**
+   *  Returns the elements of the specified sequence or the specified value in a singleton sequence if the sequence is empty.
+   *
+   *  var res = obs = xs.defaultIfEmpty();
+   *  2 - obs = xs.defaultIfEmpty(false);
+   *
+   * @memberOf Observable#
+   * @param defaultValue The value to return if the sequence is empty. If not provided, this defaults to null.
+   * @returns {Observable} An observable sequence that contains the specified default value if the source is empty; otherwise, the elements of the source itself.
+   */
+    observableProto.defaultIfEmpty = function (defaultValue) {
+      var source = this;
+      defaultValue === undefined && (defaultValue = null);
+      return new AnonymousObservable(function (o) {
+        return source.subscribe(new DefaultIfEmptyObserver(o, defaultValue));
+      }, source);
+    };
+
+  // Swap out for Array.findIndex
+  function arrayIndexOfComparer(array, item, comparer) {
+    for (var i = 0, len = array.length; i < len; i++) {
+      if (comparer(array[i], item)) { return i; }
+    }
+    return -1;
+  }
+
+  function HashSet(comparer) {
+    this.comparer = comparer;
+    this.set = [];
+  }
+  HashSet.prototype.push = function(value) {
+    var retValue = arrayIndexOfComparer(this.set, value, this.comparer) === -1;
+    retValue && this.set.push(value);
+    return retValue;
+  };
+
+  var DistinctObservable = (function (__super__) {
+    inherits(DistinctObservable, __super__);
+    function DistinctObservable(source, keyFn, cmpFn) {
+      this.source = source;
+      this._keyFn = keyFn;
+      this._cmpFn = cmpFn;
+      __super__.call(this);
+    }
+
+    DistinctObservable.prototype.subscribeCore = function (o) {
+      return this.source.subscribe(new DistinctObserver(o, this._keyFn, this._cmpFn));
+    };
+
+    return DistinctObservable;
+  }(ObservableBase));
+
+  var DistinctObserver = (function (__super__) {
+    inherits(DistinctObserver, __super__);
+    function DistinctObserver(o, keyFn, cmpFn) {
+      this._o = o;
+      this._keyFn = keyFn;
+      this._h = new HashSet(cmpFn);
+      __super__.call(this);
+    }
+
+    DistinctObserver.prototype.next = function (x) {
+      var key = x;
+      if (isFunction(this._keyFn)) {
+        key = tryCatch(this._keyFn)(x);
+        if (key === errorObj) { return this._o.onError(key.e); }
+      }
+      this._h.push(key) && this._o.onNext(x);
+    };
+
+    DistinctObserver.prototype.error = function (e) { this._o.onError(e); };
+    DistinctObserver.prototype.completed = function () { this._o.onCompleted(); };
+
+    return DistinctObserver;
+  }(AbstractObserver));
+
+  /**
+   *  Returns an observable sequence that contains only distinct elements according to the keySelector and the comparer.
+   *  Usage of this operator should be considered carefully due to the maintenance of an internal lookup structure which can grow large.
+   *
+   * @example
+   *  var res = obs = xs.distinct();
+   *  2 - obs = xs.distinct(function (x) { return x.id; });
+   *  2 - obs = xs.distinct(function (x) { return x.id; }, function (a,b) { return a === b; });
+   * @param {Function} [keySelector]  A function to compute the comparison key for each element.
+   * @param {Function} [comparer]  Used to compare items in the collection.
+   * @returns {Observable} An observable sequence only containing the distinct elements, based on a computed key value, from the source sequence.
+   */
+  observableProto.distinct = function (keySelector, comparer) {
+    comparer || (comparer = defaultComparer);
+    return new DistinctObservable(this, keySelector, comparer);
+  };
+
+  /**
+   * Returns an observable sequence that shares a single subscription to the underlying sequence. This observable sequence
+   * can be resubscribed to, even if all prior subscriptions have ended. (unlike `.publish().refCount()`)
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source.
+   */
+  observableProto.singleInstance = function() {
+    var source = this, hasObservable = false, observable;
+
+    function getObservable() {
+      if (!hasObservable) {
+        hasObservable = true;
+        observable = source['finally'](function() { hasObservable = false; }).publish().refCount();
+      }
+      return observable;
+    }
+
+    return new AnonymousObservable(function(o) {
+      return getObservable().subscribe(o);
+    });
+  };
+
+  return Rx;
+}));

node_modules/rx/dist/rx.lite.extras.js

@@ -0,0 +1,806 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx.lite'], function (Rx, exports) {
+      return factory(root, exports, Rx);
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('rx-lite'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  // References
+  var Observable = Rx.Observable,
+    observableProto = Observable.prototype,
+    observableNever = Observable.never,
+    observableThrow = Observable['throw'],
+    AnonymousObservable = Rx.AnonymousObservable,
+    ObservableBase = Rx.ObservableBase,
+    AnonymousObserver = Rx.AnonymousObserver,
+    notificationCreateOnNext = Rx.Notification.createOnNext,
+    notificationCreateOnError = Rx.Notification.createOnError,
+    notificationCreateOnCompleted = Rx.Notification.createOnCompleted,
+    Observer = Rx.Observer,
+    observerCreate = Observer.create,
+    AbstractObserver = Rx.internals.AbstractObserver,
+    Subject = Rx.Subject,
+    internals = Rx.internals,
+    helpers = Rx.helpers,
+    ScheduledObserver = internals.ScheduledObserver,
+    SerialDisposable = Rx.SerialDisposable,
+    SingleAssignmentDisposable = Rx.SingleAssignmentDisposable,
+    CompositeDisposable = Rx.CompositeDisposable,
+    BinaryDisposable = Rx.BinaryDisposable,
+    RefCountDisposable = Rx.RefCountDisposable,
+    disposableEmpty = Rx.Disposable.empty,
+    immediateScheduler = Rx.Scheduler.immediate,
+    defaultKeySerializer = helpers.defaultKeySerializer,
+    addRef = Rx.internals.addRef,
+    identity = helpers.identity,
+    isPromise = helpers.isPromise,
+    isFunction = helpers.isFunction,
+    inherits = internals.inherits,
+    bindCallback = internals.bindCallback,
+    noop = helpers.noop,
+    isScheduler = Rx.Scheduler.isScheduler,
+    observableFromPromise = Observable.fromPromise,
+    ArgumentOutOfRangeError = Rx.ArgumentOutOfRangeError;
+
+  var errorObj = {e: {}};
+  
+  function tryCatcherGen(tryCatchTarget) {
+    return function tryCatcher() {
+      try {
+        return tryCatchTarget.apply(this, arguments);
+      } catch (e) {
+        errorObj.e = e;
+        return errorObj;
+      }
+    };
+  }
+
+  var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
+    if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
+    return tryCatcherGen(fn);
+  };
+
+  function thrower(e) {
+    throw e;
+  }
+
+  function ScheduledDisposable(scheduler, disposable) {
+    this.scheduler = scheduler;
+    this.disposable = disposable;
+    this.isDisposed = false;
+  }
+
+  function scheduleItem(s, self) {
+    if (!self.isDisposed) {
+      self.isDisposed = true;
+      self.disposable.dispose();
+    }
+  }
+
+  ScheduledDisposable.prototype.dispose = function () {
+    this.scheduler.schedule(this, scheduleItem);
+  };
+
+  var CheckedObserver = (function (__super__) {
+    inherits(CheckedObserver, __super__);
+
+    function CheckedObserver(observer) {
+      __super__.call(this);
+      this._observer = observer;
+      this._state = 0; // 0 - idle, 1 - busy, 2 - done
+    }
+
+    var CheckedObserverPrototype = CheckedObserver.prototype;
+
+    CheckedObserverPrototype.onNext = function (value) {
+      this.checkAccess();
+      var res = tryCatch(this._observer.onNext).call(this._observer, value);
+      this._state = 0;
+      res === errorObj && thrower(res.e);
+    };
+
+    CheckedObserverPrototype.onError = function (err) {
+      this.checkAccess();
+      var res = tryCatch(this._observer.onError).call(this._observer, err);
+      this._state = 2;
+      res === errorObj && thrower(res.e);
+    };
+
+    CheckedObserverPrototype.onCompleted = function () {
+      this.checkAccess();
+      var res = tryCatch(this._observer.onCompleted).call(this._observer);
+      this._state = 2;
+      res === errorObj && thrower(res.e);
+    };
+
+    CheckedObserverPrototype.checkAccess = function () {
+      if (this._state === 1) { throw new Error('Re-entrancy detected'); }
+      if (this._state === 2) { throw new Error('Observer completed'); }
+      if (this._state === 0) { this._state = 1; }
+    };
+
+    return CheckedObserver;
+  }(Observer));
+
+  var ObserveOnObserver = (function (__super__) {
+    inherits(ObserveOnObserver, __super__);
+
+    function ObserveOnObserver(scheduler, observer, cancel) {
+      __super__.call(this, scheduler, observer);
+      this._cancel = cancel;
+    }
+
+    ObserveOnObserver.prototype.next = function (value) {
+      __super__.prototype.next.call(this, value);
+      this.ensureActive();
+    };
+
+    ObserveOnObserver.prototype.error = function (e) {
+      __super__.prototype.error.call(this, e);
+      this.ensureActive();
+    };
+
+    ObserveOnObserver.prototype.completed = function () {
+      __super__.prototype.completed.call(this);
+      this.ensureActive();
+    };
+
+    ObserveOnObserver.prototype.dispose = function () {
+      __super__.prototype.dispose.call(this);
+      this._cancel && this._cancel.dispose();
+      this._cancel = null;
+    };
+
+    return ObserveOnObserver;
+  })(ScheduledObserver);
+
+  /**
+   *  Checks access to the observer for grammar violations. This includes checking for multiple OnError or OnCompleted calls, as well as reentrancy in any of the observer methods.
+   *  If a violation is detected, an Error is thrown from the offending observer method call.
+   *
+   * @returns An observer that checks callbacks invocations against the observer grammar and, if the checks pass, forwards those to the specified observer.
+   */
+  Observer.prototype.checked = function () { return new CheckedObserver(this); };
+
+  /**
+   * Schedules the invocation of observer methods on the given scheduler.
+   * @param {Scheduler} scheduler Scheduler to schedule observer messages on.
+   * @returns {Observer} Observer whose messages are scheduled on the given scheduler.
+   */
+  Observer.notifyOn = function (scheduler) {
+    return new ObserveOnObserver(scheduler, this);
+  };
+
+  /**
+  *  Creates an observer from a notification callback.
+  * @param {Function} handler Action that handles a notification.
+  * @returns The observer object that invokes the specified handler using a notification corresponding to each message it receives.
+  */
+  Observer.fromNotifier = function (handler, thisArg) {
+    var handlerFunc = bindCallback(handler, thisArg, 1);
+    return new AnonymousObserver(function (x) {
+      return handlerFunc(notificationCreateOnNext(x));
+    }, function (e) {
+      return handlerFunc(notificationCreateOnError(e));
+    }, function () {
+      return handlerFunc(notificationCreateOnCompleted());
+    });
+  };
+
+  /**
+  *  Creates a notification callback from an observer.
+  * @returns The action that forwards its input notification to the underlying observer.
+  */
+  Observer.prototype.toNotifier = function () {
+    var observer = this;
+    return function (n) { return n.accept(observer); };
+  };
+
+  /**
+  *  Hides the identity of an observer.
+  * @returns An observer that hides the identity of the specified observer.
+  */
+  Observer.prototype.asObserver = function () {
+    var source = this;
+    return new AnonymousObserver(
+      function (x) { source.onNext(x); },
+      function (e) { source.onError(e); },
+      function () { source.onCompleted(); }
+    );
+  };
+
+var ObserveOnObservable = (function (__super__) {
+  inherits(ObserveOnObservable, __super__);
+  function ObserveOnObservable(source, s) {
+    this.source = source;
+    this._s = s;
+    __super__.call(this);
+  }
+
+  ObserveOnObservable.prototype.subscribeCore = function (o) {
+    return this.source.subscribe(new ObserveOnObserver(this._s, o));
+  };
+
+  return ObserveOnObservable;
+}(ObservableBase));
+
+   /**
+   *  Wraps the source sequence in order to run its observer callbacks on the specified scheduler.
+   *
+   *  This only invokes observer callbacks on a scheduler. In case the subscription and/or unsubscription actions have side-effects
+   *  that require to be run on a scheduler, use subscribeOn.
+   *
+   *  @param {Scheduler} scheduler Scheduler to notify observers on.
+   *  @returns {Observable} The source sequence whose observations happen on the specified scheduler.
+   */
+  observableProto.observeOn = function (scheduler) {
+    return new ObserveOnObservable(this, scheduler);
+  };
+
+  var SubscribeOnObservable = (function (__super__) {
+    inherits(SubscribeOnObservable, __super__);
+    function SubscribeOnObservable(source, s) {
+      this.source = source;
+      this._s = s;
+      __super__.call(this);
+    }
+
+    function scheduleMethod(scheduler, state) {
+      var source = state[0], d = state[1], o = state[2];
+      d.setDisposable(new ScheduledDisposable(scheduler, source.subscribe(o)));
+    }
+
+    SubscribeOnObservable.prototype.subscribeCore = function (o) {
+      var m = new SingleAssignmentDisposable(), d = new SerialDisposable();
+      d.setDisposable(m);
+      m.setDisposable(this._s.schedule([this.source, d, o], scheduleMethod));
+      return d;
+    };
+
+    return SubscribeOnObservable;
+  }(ObservableBase));
+
+   /**
+   *  Wraps the source sequence in order to run its subscription and unsubscription logic on the specified scheduler. This operation is not commonly used;
+   *  see the remarks section for more information on the distinction between subscribeOn and observeOn.
+
+   *  This only performs the side-effects of subscription and unsubscription on the specified scheduler. In order to invoke observer
+   *  callbacks on a scheduler, use observeOn.
+
+   *  @param {Scheduler} scheduler Scheduler to perform subscription and unsubscription actions on.
+   *  @returns {Observable} The source sequence whose subscriptions and unsubscriptions happen on the specified scheduler.
+   */
+  observableProto.subscribeOn = function (scheduler) {
+    return new SubscribeOnObservable(this, scheduler);
+  };
+
+  var GenerateObservable = (function (__super__) {
+    inherits(GenerateObservable, __super__);
+    function GenerateObservable(state, cndFn, itrFn, resFn, s) {
+      this._initialState = state;
+      this._cndFn = cndFn;
+      this._itrFn = itrFn;
+      this._resFn = resFn;
+      this._s = s;
+      __super__.call(this);
+    }
+
+    function scheduleRecursive(state, recurse) {
+      if (state.first) {
+        state.first = false;
+      } else {
+        state.newState = tryCatch(state.self._itrFn)(state.newState);
+        if (state.newState === errorObj) { return state.o.onError(state.newState.e); }
+      }
+      var hasResult = tryCatch(state.self._cndFn)(state.newState);
+      if (hasResult === errorObj) { return state.o.onError(hasResult.e); }
+      if (hasResult) {
+        var result = tryCatch(state.self._resFn)(state.newState);
+        if (result === errorObj) { return state.o.onError(result.e); }
+        state.o.onNext(result);
+        recurse(state);
+      } else {
+        state.o.onCompleted();
+      }
+    }
+
+    GenerateObservable.prototype.subscribeCore = function (o) {
+      var state = {
+        o: o,
+        self: this,
+        first: true,
+        newState: this._initialState
+      };
+      return this._s.scheduleRecursive(state, scheduleRecursive);
+    };
+
+    return GenerateObservable;
+  }(ObservableBase));
+
+  /**
+   *  Generates an observable sequence by running a state-driven loop producing the sequence's elements, using the specified scheduler to send out observer messages.
+   *
+   * @example
+   *  var res = Rx.Observable.generate(0, function (x) { return x < 10; }, function (x) { return x + 1; }, function (x) { return x; });
+   *  var res = Rx.Observable.generate(0, function (x) { return x < 10; }, function (x) { return x + 1; }, function (x) { return x; }, Rx.Scheduler.timeout);
+   * @param {Mixed} initialState Initial state.
+   * @param {Function} condition Condition to terminate generation (upon returning false).
+   * @param {Function} iterate Iteration step function.
+   * @param {Function} resultSelector Selector function for results produced in the sequence.
+   * @param {Scheduler} [scheduler] Scheduler on which to run the generator loop. If not provided, defaults to Scheduler.currentThread.
+   * @returns {Observable} The generated sequence.
+   */
+  Observable.generate = function (initialState, condition, iterate, resultSelector, scheduler) {
+    isScheduler(scheduler) || (scheduler = currentThreadScheduler);
+    return new GenerateObservable(initialState, condition, iterate, resultSelector, scheduler);
+  };
+
+  var UsingObservable = (function (__super__) {
+    inherits(UsingObservable, __super__);
+    function UsingObservable(resFn, obsFn) {
+      this._resFn = resFn;
+      this._obsFn = obsFn;
+      __super__.call(this);
+    }
+
+    UsingObservable.prototype.subscribeCore = function (o) {
+      var disposable = disposableEmpty;
+      var resource = tryCatch(this._resFn)();
+      if (resource === errorObj) {
+        return new BinaryDisposable(observableThrow(resource.e).subscribe(o), disposable);
+      }
+      resource && (disposable = resource);
+      var source = tryCatch(this._obsFn)(resource);
+      if (source === errorObj) {
+        return new BinaryDisposable(observableThrow(source.e).subscribe(o), disposable);
+      }
+      return new BinaryDisposable(source.subscribe(o), disposable);
+    };
+
+    return UsingObservable;
+  }(ObservableBase));
+
+  /**
+   * Constructs an observable sequence that depends on a resource object, whose lifetime is tied to the resulting observable sequence's lifetime.
+   * @param {Function} resourceFactory Factory function to obtain a resource object.
+   * @param {Function} observableFactory Factory function to obtain an observable sequence that depends on the obtained resource.
+   * @returns {Observable} An observable sequence whose lifetime controls the lifetime of the dependent resource object.
+   */
+  Observable.using = function (resourceFactory, observableFactory) {
+    return new UsingObservable(resourceFactory, observableFactory);
+  };
+
+  /**
+   * Propagates the observable sequence or Promise that reacts first.
+   * @param {Observable} rightSource Second observable sequence or Promise.
+   * @returns {Observable} {Observable} An observable sequence that surfaces either of the given sequences, whichever reacted first.
+   */
+  observableProto.amb = function (rightSource) {
+    var leftSource = this;
+    return new AnonymousObservable(function (observer) {
+      var choice,
+        leftChoice = 'L', rightChoice = 'R',
+        leftSubscription = new SingleAssignmentDisposable(),
+        rightSubscription = new SingleAssignmentDisposable();
+
+      isPromise(rightSource) && (rightSource = observableFromPromise(rightSource));
+
+      function choiceL() {
+        if (!choice) {
+          choice = leftChoice;
+          rightSubscription.dispose();
+        }
+      }
+
+      function choiceR() {
+        if (!choice) {
+          choice = rightChoice;
+          leftSubscription.dispose();
+        }
+      }
+
+      var leftSubscribe = observerCreate(
+        function (left) {
+          choiceL();
+          choice === leftChoice && observer.onNext(left);
+        },
+        function (e) {
+          choiceL();
+          choice === leftChoice && observer.onError(e);
+        },
+        function () {
+          choiceL();
+          choice === leftChoice && observer.onCompleted();
+        }
+      );
+      var rightSubscribe = observerCreate(
+        function (right) {
+          choiceR();
+          choice === rightChoice && observer.onNext(right);
+        },
+        function (e) {
+          choiceR();
+          choice === rightChoice && observer.onError(e);
+        },
+        function () {
+          choiceR();
+          choice === rightChoice && observer.onCompleted();
+        }
+      );
+
+      leftSubscription.setDisposable(leftSource.subscribe(leftSubscribe));
+      rightSubscription.setDisposable(rightSource.subscribe(rightSubscribe));
+
+      return new BinaryDisposable(leftSubscription, rightSubscription);
+    });
+  };
+
+  function amb(p, c) { return p.amb(c); }
+
+  /**
+   * Propagates the observable sequence or Promise that reacts first.
+   * @returns {Observable} An observable sequence that surfaces any of the given sequences, whichever reacted first.
+   */
+  Observable.amb = function () {
+    var acc = observableNever(), items;
+    if (Array.isArray(arguments[0])) {
+      items = arguments[0];
+    } else {
+      var len = arguments.length;
+      items = new Array(items);
+      for(var i = 0; i < len; i++) { items[i] = arguments[i]; }
+    }
+    for (var i = 0, len = items.length; i < len; i++) {
+      acc = amb(acc, items[i]);
+    }
+    return acc;
+  };
+
+  /**
+   * Continues an observable sequence that is terminated normally or by an exception with the next observable sequence.
+   * @param {Observable} second Second observable sequence used to produce results after the first sequence terminates.
+   * @returns {Observable} An observable sequence that concatenates the first and second sequence, even if the first sequence terminates exceptionally.
+   */
+  observableProto.onErrorResumeNext = function (second) {
+    if (!second) { throw new Error('Second observable is required'); }
+    return onErrorResumeNext([this, second]);
+  };
+
+  var OnErrorResumeNextObservable = (function(__super__) {
+    inherits(OnErrorResumeNextObservable, __super__);
+    function OnErrorResumeNextObservable(sources) {
+      this.sources = sources;
+      __super__.call(this);
+    }
+
+    function scheduleMethod(state, recurse) {
+      if (state.pos < state.sources.length) {
+        var current = state.sources[state.pos++];
+        isPromise(current) && (current = observableFromPromise(current));
+        var d = new SingleAssignmentDisposable();
+        state.subscription.setDisposable(d);
+        d.setDisposable(current.subscribe(new OnErrorResumeNextObserver(state, recurse)));
+      } else {
+        state.o.onCompleted();
+      }
+    }
+
+    OnErrorResumeNextObservable.prototype.subscribeCore = function (o) {
+      var subscription = new SerialDisposable(),
+          state = {pos: 0, subscription: subscription, o: o, sources: this.sources },
+          cancellable = immediateScheduler.scheduleRecursive(state, scheduleMethod);
+
+      return new BinaryDisposable(subscription, cancellable);
+    };
+
+    return OnErrorResumeNextObservable;
+  }(ObservableBase));
+
+  var OnErrorResumeNextObserver = (function(__super__) {
+    inherits(OnErrorResumeNextObserver, __super__);
+    function OnErrorResumeNextObserver(state, recurse) {
+      this._state = state;
+      this._recurse = recurse;
+      __super__.call(this);
+    }
+
+    OnErrorResumeNextObserver.prototype.next = function (x) { this._state.o.onNext(x); };
+    OnErrorResumeNextObserver.prototype.error = function () { this._recurse(this._state); };
+    OnErrorResumeNextObserver.prototype.completed = function () { this._recurse(this._state); };
+
+    return OnErrorResumeNextObserver;
+  }(AbstractObserver));
+
+  /**
+   * Continues an observable sequence that is terminated normally or by an exception with the next observable sequence.
+   * @returns {Observable} An observable sequence that concatenates the source sequences, even if a sequence terminates exceptionally.
+   */
+  var onErrorResumeNext = Observable.onErrorResumeNext = function () {
+    var sources = [];
+    if (Array.isArray(arguments[0])) {
+      sources = arguments[0];
+    } else {
+      var len = arguments.length;
+      sources = new Array(len);
+      for(var i = 0; i < len; i++) { sources[i] = arguments[i]; }
+    }
+    return new OnErrorResumeNextObservable(sources);
+  };
+
+  function toArray(x) { return x.toArray(); }
+  function notEmpty(x) { return x.length > 0; }
+
+  /**
+   *  Projects each element of an observable sequence into zero or more buffers which are produced based on element count information.
+   * @param {Number} count Length of each buffer.
+   * @param {Number} [skip] Number of elements to skip between creation of consecutive buffers. If not provided, defaults to the count.
+   * @returns {Observable} An observable sequence of buffers.
+   */
+  observableProto.bufferWithCount = observableProto.bufferCount = function (count, skip) {
+    typeof skip !== 'number' && (skip = count);
+    return this.windowWithCount(count, skip)
+      .flatMap(toArray)
+      .filter(notEmpty);
+  };
+
+  /**
+   *  Projects each element of an observable sequence into zero or more windows which are produced based on element count information.
+   * @param {Number} count Length of each window.
+   * @param {Number} [skip] Number of elements to skip between creation of consecutive windows. If not specified, defaults to the count.
+   * @returns {Observable} An observable sequence of windows.
+   */
+  observableProto.windowWithCount = observableProto.windowCount = function (count, skip) {
+    var source = this;
+    +count || (count = 0);
+    Math.abs(count) === Infinity && (count = 0);
+    if (count <= 0) { throw new ArgumentOutOfRangeError(); }
+    skip == null && (skip = count);
+    +skip || (skip = 0);
+    Math.abs(skip) === Infinity && (skip = 0);
+
+    if (skip <= 0) { throw new ArgumentOutOfRangeError(); }
+    return new AnonymousObservable(function (observer) {
+      var m = new SingleAssignmentDisposable(),
+        refCountDisposable = new RefCountDisposable(m),
+        n = 0,
+        q = [];
+
+      function createWindow () {
+        var s = new Subject();
+        q.push(s);
+        observer.onNext(addRef(s, refCountDisposable));
+      }
+
+      createWindow();
+
+      m.setDisposable(source.subscribe(
+        function (x) {
+          for (var i = 0, len = q.length; i < len; i++) { q[i].onNext(x); }
+          var c = n - count + 1;
+          c >= 0 && c % skip === 0 && q.shift().onCompleted();
+          ++n % skip === 0 && createWindow();
+        },
+        function (e) {
+          while (q.length > 0) { q.shift().onError(e); }
+          observer.onError(e);
+        },
+        function () {
+          while (q.length > 0) { q.shift().onCompleted(); }
+          observer.onCompleted();
+        }
+      ));
+      return refCountDisposable;
+    }, source);
+  };
+
+  var TakeLastBufferObserver = (function (__super__) {
+    inherits(TakeLastBufferObserver, __super__);
+    function TakeLastBufferObserver(o, c) {
+      this._o = o;
+      this._c = c;
+      this._q = [];
+      __super__.call(this);
+    }
+
+    TakeLastBufferObserver.prototype.next = function (x) {
+      this._q.push(x);
+      this._q.length > this._c && this._q.shift();
+    };
+
+    TakeLastBufferObserver.prototype.error = function (e) {
+      this._o.onError(e);
+    };
+
+    TakeLastBufferObserver.prototype.completed = function () {
+      this._o.onNext(this._q);
+      this._o.onCompleted();
+    };
+
+    return TakeLastBufferObserver;
+  }(AbstractObserver));
+
+  /**
+   *  Returns an array with the specified number of contiguous elements from the end of an observable sequence.
+   *
+   * @description
+   *  This operator accumulates a buffer with a length enough to store count elements. Upon completion of the
+   *  source sequence, this buffer is produced on the result sequence.
+   * @param {Number} count Number of elements to take from the end of the source sequence.
+   * @returns {Observable} An observable sequence containing a single array with the specified number of elements from the end of the source sequence.
+   */
+  observableProto.takeLastBuffer = function (count) {
+    if (count < 0) { throw new ArgumentOutOfRangeError(); }
+    var source = this;
+    return new AnonymousObservable(function (o) {
+      return source.subscribe(new TakeLastBufferObserver(o, count));
+    }, source);
+  };
+
+  var DefaultIfEmptyObserver = (function (__super__) {
+    inherits(DefaultIfEmptyObserver, __super__);
+    function DefaultIfEmptyObserver(o, d) {
+      this._o = o;
+      this._d = d;
+      this._f = false;
+      __super__.call(this);
+    }
+
+    DefaultIfEmptyObserver.prototype.next = function (x) {
+      this._f = true;
+      this._o.onNext(x);
+    };
+
+    DefaultIfEmptyObserver.prototype.error = function (e) {
+      this._o.onError(e);
+    };
+
+    DefaultIfEmptyObserver.prototype.completed = function () {
+      !this._f && this._o.onNext(this._d);
+      this._o.onCompleted();
+    };
+
+    return DefaultIfEmptyObserver;
+  }(AbstractObserver));
+
+  /**
+   *  Returns the elements of the specified sequence or the specified value in a singleton sequence if the sequence is empty.
+   *
+   *  var res = obs = xs.defaultIfEmpty();
+   *  2 - obs = xs.defaultIfEmpty(false);
+   *
+   * @memberOf Observable#
+   * @param defaultValue The value to return if the sequence is empty. If not provided, this defaults to null.
+   * @returns {Observable} An observable sequence that contains the specified default value if the source is empty; otherwise, the elements of the source itself.
+   */
+    observableProto.defaultIfEmpty = function (defaultValue) {
+      var source = this;
+      defaultValue === undefined && (defaultValue = null);
+      return new AnonymousObservable(function (o) {
+        return source.subscribe(new DefaultIfEmptyObserver(o, defaultValue));
+      }, source);
+    };
+
+  // Swap out for Array.findIndex
+  function arrayIndexOfComparer(array, item, comparer) {
+    for (var i = 0, len = array.length; i < len; i++) {
+      if (comparer(array[i], item)) { return i; }
+    }
+    return -1;
+  }
+
+  function HashSet(comparer) {
+    this.comparer = comparer;
+    this.set = [];
+  }
+  HashSet.prototype.push = function(value) {
+    var retValue = arrayIndexOfComparer(this.set, value, this.comparer) === -1;
+    retValue && this.set.push(value);
+    return retValue;
+  };
+
+  var DistinctObservable = (function (__super__) {
+    inherits(DistinctObservable, __super__);
+    function DistinctObservable(source, keyFn, cmpFn) {
+      this.source = source;
+      this._keyFn = keyFn;
+      this._cmpFn = cmpFn;
+      __super__.call(this);
+    }
+
+    DistinctObservable.prototype.subscribeCore = function (o) {
+      return this.source.subscribe(new DistinctObserver(o, this._keyFn, this._cmpFn));
+    };
+
+    return DistinctObservable;
+  }(ObservableBase));
+
+  var DistinctObserver = (function (__super__) {
+    inherits(DistinctObserver, __super__);
+    function DistinctObserver(o, keyFn, cmpFn) {
+      this._o = o;
+      this._keyFn = keyFn;
+      this._h = new HashSet(cmpFn);
+      __super__.call(this);
+    }
+
+    DistinctObserver.prototype.next = function (x) {
+      var key = x;
+      if (isFunction(this._keyFn)) {
+        key = tryCatch(this._keyFn)(x);
+        if (key === errorObj) { return this._o.onError(key.e); }
+      }
+      this._h.push(key) && this._o.onNext(x);
+    };
+
+    DistinctObserver.prototype.error = function (e) { this._o.onError(e); };
+    DistinctObserver.prototype.completed = function () { this._o.onCompleted(); };
+
+    return DistinctObserver;
+  }(AbstractObserver));
+
+  /**
+   *  Returns an observable sequence that contains only distinct elements according to the keySelector and the comparer.
+   *  Usage of this operator should be considered carefully due to the maintenance of an internal lookup structure which can grow large.
+   *
+   * @example
+   *  var res = obs = xs.distinct();
+   *  2 - obs = xs.distinct(function (x) { return x.id; });
+   *  2 - obs = xs.distinct(function (x) { return x.id; }, function (a,b) { return a === b; });
+   * @param {Function} [keySelector]  A function to compute the comparison key for each element.
+   * @param {Function} [comparer]  Used to compare items in the collection.
+   * @returns {Observable} An observable sequence only containing the distinct elements, based on a computed key value, from the source sequence.
+   */
+  observableProto.distinct = function (keySelector, comparer) {
+    comparer || (comparer = defaultComparer);
+    return new DistinctObservable(this, keySelector, comparer);
+  };
+
+  /**
+   * Returns an observable sequence that shares a single subscription to the underlying sequence. This observable sequence
+   * can be resubscribed to, even if all prior subscriptions have ended. (unlike `.publish().refCount()`)
+   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source.
+   */
+  observableProto.singleInstance = function() {
+    var source = this, hasObservable = false, observable;
+
+    function getObservable() {
+      if (!hasObservable) {
+        hasObservable = true;
+        observable = source['finally'](function() { hasObservable = false; }).publish().refCount();
+      }
+      return observable;
+    }
+
+    return new AnonymousObservable(function(o) {
+      return getObservable().subscribe(o);
+    });
+  };
+
+  return Rx;
+}));

node_modules/rx/dist/rx.sorting.js

@@ -0,0 +1,71 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx'], function (Rx, exports) {
+      return factory(root, exports, Rx);
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('./rx'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  var Observable = Rx.Observable,
+    observableProto = Observable.prototype,
+    AnonymousObservable = Rx.AnonymousObservable,
+    observableNever = Observable.never,
+    isEqual = Rx.internals.isEqual,
+    defaultSubComparer = Rx.helpers.defaultSubComparer;
+
+  /**
+   * jortSort checks if your inputs are sorted.  Note that this is only for a sequence with an end.
+   * See http://jort.technology/ for full details.
+   * @returns {Observable} An observable which has a single value of true if sorted, else false.
+   */
+  observableProto.jortSort = function () {
+    return this.jortSortUntil(observableNever());
+  };
+
+  /**
+   * jortSort checks if your inputs are sorted until another Observable sequence fires.
+   * See http://jort.technology/ for full details.
+   * @returns {Observable} An observable which has a single value of true if sorted, else false.
+   */
+  observableProto.jortSortUntil = function (other) {
+    var source = this;
+    return new AnonymousObservable(function (observer) {
+      var arr = [];
+      return source.takeUntil(other).subscribe(
+        arr.push.bind(arr),
+        observer.onError.bind(observer),
+        function () {
+          var sorted = arr.slice(0).sort(defaultSubComparer);
+          observer.onNext(isEqual(arr, sorted));
+          observer.onCompleted();
+        });
+    }, source);
+  };
+
+  return Rx;
+}));

node_modules/rx/dist/rx.sorting.map

@@ -0,0 +1 @@
+{"version":3,"file":"rx.sorting.min.js","sources":["rx.sorting.js"],"names":["factory","checkGlobal","value","Object","objectTypes","function","object","freeExports","exports","nodeType","freeModule","module","freeGlobal","global","freeSelf","self","freeWindow","window","thisGlobal","this","root","Function","define","amd","Rx","require","call","exp","undefined","Observable","observableProto","prototype","AnonymousObservable","observableNever","never","isEqual","internals","defaultSubComparer","helpers","jortSort","jortSortUntil","other","source","observer","arr","takeUntil","subscribe","push","bind","onError","sorted","slice","sort","onNext","onCompleted"],"mappings":";CAEE,SAAUA,GAMV,QAASC,GAAYC,GACnB,MAAQA,IAASA,EAAMC,SAAWA,OAAUD,EAAQ,KANtD,GAAIE,IACFC,YAAY,EACZC,QAAU,GAORC,EAAeH,QAAmBI,WAAYA,UAAYA,QAAQC,SAAYD,QAAU,KACxFE,EAAcN,QAAmBO,UAAWA,SAAWA,OAAOF,SAAYE,OAAS,KACnFC,EAAaX,EAAYM,GAAeG,GAAgC,gBAAXG,SAAuBA,QACpFC,EAAWb,EAAYG,QAAmBW,QAASA,MACnDC,EAAaf,EAAYG,QAAmBa,UAAWA,QAEvDC,GADiBR,GAAcA,EAAWF,UAAYD,EAAeA,EAAc,KACtEN,EAAYG,QAAmBe,QAASA,OACrDC,EAAOR,GAAgBI,KAAgBE,GAAcA,EAAWD,SAAYD,GAAeF,GAAYI,GAAcG,SAAS,gBAG5G,mBAAXC,SAAyBA,OAAOC,IACzCD,QAAQ,QAAS,SAAUE,EAAIhB,GAC7B,MAAOR,GAAQoB,EAAMZ,EAASgB,KAEL,gBAAXb,SAAuBA,QAAUA,OAAOH,UAAYD,EACpEI,OAAOH,QAAUR,EAAQoB,EAAMT,OAAOH,QAASiB,QAAQ,SAEvDL,EAAKI,GAAKxB,EAAQoB,KAAUA,EAAKI,MAEnCE,KAAKP,KAAM,SAAUC,EAAMO,EAAKH,EAAII,GAEpC,GAAIC,GAAaL,EAAGK,WAClBC,EAAkBD,EAAWE,UAC7BC,EAAsBR,EAAGQ,oBACzBC,EAAkBJ,EAAWK,MAC7BC,EAAUX,EAAGY,UAAUD,QACvBE,EAAqBb,EAAGc,QAAQD,kBA+BlC,OAxBAP,GAAgBS,SAAW,WACzB,MAAOpB,MAAKqB,cAAcP,MAQ5BH,EAAgBU,cAAgB,SAAUC,GACxC,GAAIC,GAASvB,IACb,OAAO,IAAIa,GAAoB,SAAUW,GACvC,GAAIC,KACJ,OAAOF,GAAOG,UAAUJ,GAAOK,UAC7BF,EAAIG,KAAKC,KAAKJ,GACdD,EAASM,QAAQD,KAAKL,GACtB,WACE,GAAIO,GAASN,EAAIO,MAAM,GAAGC,KAAKf,EAC/BM,GAASU,OAAOlB,EAAQS,EAAKM,IAC7BP,EAASW,iBAEZZ,IAGElB"}

node_modules/rx/dist/rx.sorting.min.js

@@ -0,0 +1,3 @@
+/* Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.*/
+(function(a){function b(a){return a&&a.Object===Object?a:null}var c={"function":!0,object:!0},d=c[typeof exports]&&exports&&!exports.nodeType?exports:null,e=c[typeof module]&&module&&!module.nodeType?module:null,f=b(d&&e&&"object"==typeof global&&global),g=b(c[typeof self]&&self),h=b(c[typeof window]&&window),i=(e&&e.exports===d?d:null,b(c[typeof this]&&this)),j=f||h!==(i&&i.window)&&h||g||i||Function("return this")();"function"==typeof define&&define.amd?define(["./rx"],function(b,c){return a(j,c,b)}):"object"==typeof module&&module&&module.exports===d?module.exports=a(j,module.exports,require("./rx")):j.Rx=a(j,{},j.Rx)}).call(this,function(a,b,c,d){var e=c.Observable,f=e.prototype,g=c.AnonymousObservable,h=e.never,i=c.internals.isEqual,j=c.helpers.defaultSubComparer;return f.jortSort=function(){return this.jortSortUntil(h())},f.jortSortUntil=function(a){var b=this;return new g(function(c){var d=[];return b.takeUntil(a).subscribe(d.push.bind(d),c.onError.bind(c),function(){var a=d.slice(0).sort(j);c.onNext(i(d,a)),c.onCompleted()})},b)},c});
+//# sourceMappingURL=rx.sorting.map

node_modules/rx/dist/rx.testing.js

@@ -0,0 +1,509 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx.virtualtime', 'exports'], function (Rx, exports) {
+      root.Rx = factory(root, exports, Rx);
+      return root.Rx;
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('./rx'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  // Defaults
+  var Observer = Rx.Observer,
+    Observable = Rx.Observable,
+    Notification = Rx.Notification,
+    VirtualTimeScheduler = Rx.VirtualTimeScheduler,
+    Disposable = Rx.Disposable,
+    disposableEmpty = Disposable.empty,
+    disposableCreate = Disposable.create,
+    CompositeDisposable = Rx.CompositeDisposable,
+    inherits = Rx.internals.inherits,
+    defaultComparer = Rx.internals.isEqual;
+
+function OnNextPredicate(predicate) {
+    this.predicate = predicate;
+}
+
+OnNextPredicate.prototype.equals = function (other) {
+  if (other === this) { return true; }
+  if (other == null) { return false; }
+  if (other.kind !== 'N') { return false; }
+  return this.predicate(other.value);
+};
+
+function OnErrorPredicate(predicate) {
+  this.predicate = predicate;
+}
+
+OnErrorPredicate.prototype.equals = function (other) {
+  if (other === this) { return true; }
+  if (other == null) { return false; }
+  if (other.kind !== 'E') { return false; }
+  return this.predicate(other.error);
+};
+
+var ReactiveTest = Rx.ReactiveTest = {
+  /** Default virtual time used for creation of observable sequences in unit tests. */
+  created: 100,
+  /** Default virtual time used to subscribe to observable sequences in unit tests. */
+  subscribed: 200,
+  /** Default virtual time used to dispose subscriptions in unit tests. */
+  disposed: 1000,
+
+  /**
+   * Factory method for an OnNext notification record at a given time with a given value or a predicate function.
+   *
+   * 1 - ReactiveTest.onNext(200, 42);
+   * 2 - ReactiveTest.onNext(200, function (x) { return x.length == 2; });
+   *
+   * @param ticks Recorded virtual time the OnNext notification occurs.
+   * @param value Recorded value stored in the OnNext notification or a predicate.
+   * @return Recorded OnNext notification.
+   */
+  onNext: function (ticks, value) {
+    return typeof value === 'function' ?
+      new Recorded(ticks, new OnNextPredicate(value)) :
+      new Recorded(ticks, Notification.createOnNext(value));
+  },
+  /**
+   * Factory method for an OnError notification record at a given time with a given error.
+   *
+   * 1 - ReactiveTest.onNext(200, new Error('error'));
+   * 2 - ReactiveTest.onNext(200, function (e) { return e.message === 'error'; });
+   *
+   * @param ticks Recorded virtual time the OnError notification occurs.
+   * @param exception Recorded exception stored in the OnError notification.
+   * @return Recorded OnError notification.
+   */
+  onError: function (ticks, error) {
+    return typeof error === 'function' ?
+      new Recorded(ticks, new OnErrorPredicate(error)) :
+      new Recorded(ticks, Notification.createOnError(error));
+  },
+  /**
+   * Factory method for an OnCompleted notification record at a given time.
+   *
+   * @param ticks Recorded virtual time the OnCompleted notification occurs.
+   * @return Recorded OnCompleted notification.
+   */
+  onCompleted: function (ticks) {
+    return new Recorded(ticks, Notification.createOnCompleted());
+  },
+  /**
+   * Factory method for a subscription record based on a given subscription and disposal time.
+   *
+   * @param start Virtual time indicating when the subscription was created.
+   * @param end Virtual time indicating when the subscription was disposed.
+   * @return Subscription object.
+   */
+  subscribe: function (start, end) {
+    return new Subscription(start, end);
+  }
+};
+
+  /**
+   * Creates a new object recording the production of the specified value at the given virtual time.
+   *
+   * @constructor
+   * @param {Number} time Virtual time the value was produced on.
+   * @param {Mixed} value Value that was produced.
+   * @param {Function} comparer An optional comparer.
+   */
+  var Recorded = Rx.Recorded = function (time, value, comparer) {
+    this.time = time;
+    this.value = value;
+    this.comparer = comparer || defaultComparer;
+  };
+
+  /**
+   * Checks whether the given recorded object is equal to the current instance.
+   *
+   * @param {Recorded} other Recorded object to check for equality.
+   * @returns {Boolean} true if both objects are equal; false otherwise.
+   */
+  Recorded.prototype.equals = function (other) {
+    return this.time === other.time && this.comparer(this.value, other.value);
+  };
+
+  /**
+   * Returns a string representation of the current Recorded value.
+   *
+   * @returns {String} String representation of the current Recorded value.
+   */
+  Recorded.prototype.toString = function () {
+    return this.value.toString() + '@' + this.time;
+  };
+
+  /**
+   * Creates a new subscription object with the given virtual subscription and unsubscription time.
+   *
+   * @constructor
+   * @param {Number} subscribe Virtual time at which the subscription occurred.
+   * @param {Number} unsubscribe Virtual time at which the unsubscription occurred.
+   */
+  var Subscription = Rx.Subscription = function (start, end) {
+    this.subscribe = start;
+    this.unsubscribe = end || Number.MAX_VALUE;
+  };
+
+  /**
+   * Checks whether the given subscription is equal to the current instance.
+   * @param other Subscription object to check for equality.
+   * @returns {Boolean} true if both objects are equal; false otherwise.
+   */
+  Subscription.prototype.equals = function (other) {
+    return this.subscribe === other.subscribe && this.unsubscribe === other.unsubscribe;
+  };
+
+  /**
+   * Returns a string representation of the current Subscription value.
+   * @returns {String} String representation of the current Subscription value.
+   */
+  Subscription.prototype.toString = function () {
+    return '(' + this.subscribe + ', ' + (this.unsubscribe === Number.MAX_VALUE ? 'Infinite' : this.unsubscribe) + ')';
+  };
+
+  var MockDisposable = Rx.MockDisposable = function (scheduler) {
+    this.scheduler = scheduler;
+    this.disposes = [];
+    this.disposes.push(this.scheduler.clock);
+  };
+
+  MockDisposable.prototype.dispose = function () {
+    this.disposes.push(this.scheduler.clock);
+  };
+
+  var MockObserver = (function (__super__) {
+    inherits(MockObserver, __super__);
+
+    function MockObserver(scheduler) {
+      __super__.call(this);
+      this.scheduler = scheduler;
+      this.messages = [];
+    }
+
+    var MockObserverPrototype = MockObserver.prototype;
+
+    MockObserverPrototype.onNext = function (value) {
+      this.messages.push(new Recorded(this.scheduler.clock, Notification.createOnNext(value)));
+    };
+
+    MockObserverPrototype.onError = function (e) {
+      this.messages.push(new Recorded(this.scheduler.clock, Notification.createOnError(e)));
+    };
+
+    MockObserverPrototype.onCompleted = function () {
+      this.messages.push(new Recorded(this.scheduler.clock, Notification.createOnCompleted()));
+    };
+
+    return MockObserver;
+  })(Observer);
+
+  function MockPromise(scheduler, messages) {
+    var self = this;
+    this.scheduler = scheduler;
+    this.messages = messages;
+    this.subscriptions = [];
+    this.observers = [];
+    for (var i = 0, len = this.messages.length; i < len; i++) {
+      var message = this.messages[i],
+          notification = message.value;
+      (function (innerNotification) {
+        scheduler.scheduleAbsolute(null, message.time, function () {
+          var obs = self.observers.slice(0);
+
+          for (var j = 0, jLen = obs.length; j < jLen; j++) {
+            innerNotification.accept(obs[j]);
+          }
+          return disposableEmpty;
+        });
+      })(notification);
+    }
+  }
+
+  MockPromise.prototype.then = function (onResolved, onRejected) {
+    var self = this;
+
+    this.subscriptions.push(new Subscription(this.scheduler.clock));
+    var index = this.subscriptions.length - 1;
+
+    var newPromise;
+
+    var observer = Rx.Observer.create(
+      function (x) {
+        var retValue = onResolved(x);
+        if (retValue && typeof retValue.then === 'function') {
+          newPromise = retValue;
+        } else {
+          var ticks = self.scheduler.clock;
+          newPromise = new MockPromise(self.scheduler, [Rx.ReactiveTest.onNext(ticks, undefined), Rx.ReactiveTest.onCompleted(ticks)]);
+        }
+        var idx = self.observers.indexOf(observer);
+        self.observers.splice(idx, 1);
+        self.subscriptions[index] = new Subscription(self.subscriptions[index].subscribe, self.scheduler.clock);
+      },
+      function (err) {
+        onRejected(err);
+        var idx = self.observers.indexOf(observer);
+        self.observers.splice(idx, 1);
+        self.subscriptions[index] = new Subscription(self.subscriptions[index].subscribe, self.scheduler.clock);
+      }
+    );
+    this.observers.push(observer);
+
+    return newPromise || new MockPromise(this.scheduler, this.messages);
+  };
+
+  var HotObservable = (function (__super__) {
+    inherits(HotObservable, __super__);
+
+    function HotObservable(scheduler, messages) {
+      __super__.call(this);
+      var message, notification, observable = this;
+      this.scheduler = scheduler;
+      this.messages = messages;
+      this.subscriptions = [];
+      this.observers = [];
+      for (var i = 0, len = this.messages.length; i < len; i++) {
+        message = this.messages[i];
+        notification = message.value;
+        (function (innerNotification) {
+          scheduler.scheduleAbsolute(null, message.time, function () {
+            var obs = observable.observers.slice(0);
+
+            for (var j = 0, jLen = obs.length; j < jLen; j++) {
+              innerNotification.accept(obs[j]);
+            }
+            return disposableEmpty;
+          });
+        })(notification);
+      }
+    }
+
+    HotObservable.prototype._subscribe = function (o) {
+      var observable = this;
+      this.observers.push(o);
+      this.subscriptions.push(new Subscription(this.scheduler.clock));
+      var index = this.subscriptions.length - 1;
+      return disposableCreate(function () {
+        var idx = observable.observers.indexOf(o);
+        observable.observers.splice(idx, 1);
+        observable.subscriptions[index] = new Subscription(observable.subscriptions[index].subscribe, observable.scheduler.clock);
+      });
+    };
+
+    return HotObservable;
+  })(Observable);
+
+  var ColdObservable = (function (__super__) {
+    inherits(ColdObservable, __super__);
+
+    function ColdObservable(scheduler, messages) {
+      __super__.call(this);
+      this.scheduler = scheduler;
+      this.messages = messages;
+      this.subscriptions = [];
+    }
+
+    ColdObservable.prototype._subscribe = function (o) {
+      var message, notification, observable = this;
+      this.subscriptions.push(new Subscription(this.scheduler.clock));
+      var index = this.subscriptions.length - 1;
+      var d = new CompositeDisposable();
+      for (var i = 0, len = this.messages.length; i < len; i++) {
+        message = this.messages[i];
+        notification = message.value;
+        (function (innerNotification) {
+          d.add(observable.scheduler.scheduleRelative(null, message.time, function () {
+            innerNotification.accept(o);
+            return disposableEmpty;
+          }));
+        })(notification);
+      }
+      return disposableCreate(function () {
+        observable.subscriptions[index] = new Subscription(observable.subscriptions[index].subscribe, observable.scheduler.clock);
+        d.dispose();
+      });
+    };
+
+    return ColdObservable;
+  })(Observable);
+
+  /** Virtual time scheduler used for testing applications and libraries built using Reactive Extensions. */
+  Rx.TestScheduler = (function (__super__) {
+    inherits(TestScheduler, __super__);
+
+    function baseComparer(x, y) {
+      return x > y ? 1 : (x < y ? -1 : 0);
+    }
+
+    function TestScheduler() {
+      __super__.call(this, 0, baseComparer);
+    }
+
+    /**
+     * Schedules an action to be executed at the specified virtual time.
+     *
+     * @param state State passed to the action to be executed.
+     * @param dueTime Absolute virtual time at which to execute the action.
+     * @param action Action to be executed.
+     * @return Disposable object used to cancel the scheduled action (best effort).
+     */
+    TestScheduler.prototype.scheduleAbsolute = function (state, dueTime, action) {
+      dueTime <= this.clock && (dueTime = this.clock + 1);
+      return __super__.prototype.scheduleAbsolute.call(this, state, dueTime, action);
+    };
+    /**
+     * Adds a relative virtual time to an absolute virtual time value.
+     *
+     * @param absolute Absolute virtual time value.
+     * @param relative Relative virtual time value to add.
+     * @return Resulting absolute virtual time sum value.
+     */
+    TestScheduler.prototype.add = function (absolute, relative) {
+      return absolute + relative;
+    };
+    /**
+     * Converts the absolute virtual time value to a DateTimeOffset value.
+     *
+     * @param absolute Absolute virtual time value to convert.
+     * @return Corresponding DateTimeOffset value.
+     */
+    TestScheduler.prototype.toAbsoluteTime = function (absolute) {
+      return new Date(absolute).getTime();
+    };
+    /**
+     * Converts the TimeSpan value to a relative virtual time value.
+     *
+     * @param timeSpan TimeSpan value to convert.
+     * @return Corresponding relative virtual time value.
+     */
+    TestScheduler.prototype.toRelativeTime = function (timeSpan) {
+      return timeSpan;
+    };
+    /**
+     * Starts the test scheduler and uses the specified virtual times to invoke the factory function, subscribe to the resulting sequence, and dispose the subscription.
+     *
+     * @param create Factory method to create an observable sequence.
+     * @param created Virtual time at which to invoke the factory to create an observable sequence.
+     * @param subscribed Virtual time at which to subscribe to the created observable sequence.
+     * @param disposed Virtual time at which to dispose the subscription.
+     * @return Observer with timestamped recordings of notification messages that were received during the virtual time window when the subscription to the source sequence was active.
+     */
+    TestScheduler.prototype.startScheduler = function (createFn, settings) {
+      settings || (settings = {});
+      settings.created == null && (settings.created = ReactiveTest.created);
+      settings.subscribed == null && (settings.subscribed = ReactiveTest.subscribed);
+      settings.disposed == null && (settings.disposed = ReactiveTest.disposed);
+
+      var observer = this.createObserver(), source, subscription;
+
+      this.scheduleAbsolute(null, settings.created, function () {
+        source = createFn();
+        return disposableEmpty;
+      });
+
+      this.scheduleAbsolute(null, settings.subscribed, function () {
+        subscription = source.subscribe(observer);
+        return disposableEmpty;
+      });
+
+      this.scheduleAbsolute(null, settings.disposed, function () {
+        subscription.dispose();
+        return disposableEmpty;
+      });
+
+      this.start();
+
+      return observer;
+    };
+
+    /**
+     * Creates a hot observable using the specified timestamped notification messages either as an array or arguments.
+     * @param messages Notifications to surface through the created sequence at their specified absolute virtual times.
+     * @return Hot observable sequence that can be used to assert the timing of subscriptions and notifications.
+     */
+    TestScheduler.prototype.createHotObservable = function () {
+      var len = arguments.length, args;
+      if (Array.isArray(arguments[0])) {
+        args = arguments[0];
+      } else {
+        args = new Array(len);
+        for (var i = 0; i < len; i++) { args[i] = arguments[i]; }
+      }
+      return new HotObservable(this, args);
+    };
+
+    /**
+     * Creates a cold observable using the specified timestamped notification messages either as an array or arguments.
+     * @param messages Notifications to surface through the created sequence at their specified virtual time offsets from the sequence subscription time.
+     * @return Cold observable sequence that can be used to assert the timing of subscriptions and notifications.
+     */
+    TestScheduler.prototype.createColdObservable = function () {
+      var len = arguments.length, args;
+      if (Array.isArray(arguments[0])) {
+        args = arguments[0];
+      } else {
+        args = new Array(len);
+        for (var i = 0; i < len; i++) { args[i] = arguments[i]; }
+      }
+      return new ColdObservable(this, args);
+    };
+
+    /**
+     * Creates a resolved promise with the given value and ticks
+     * @param {Number} ticks The absolute time of the resolution.
+     * @param {Any} value The value to yield at the given tick.
+     * @returns {MockPromise} A mock Promise which fulfills with the given value.
+     */
+    TestScheduler.prototype.createResolvedPromise = function (ticks, value) {
+      return new MockPromise(this, [Rx.ReactiveTest.onNext(ticks, value), Rx.ReactiveTest.onCompleted(ticks)]);
+    };
+
+    /**
+     * Creates a rejected promise with the given reason and ticks
+     * @param {Number} ticks The absolute time of the resolution.
+     * @param {Any} reason The reason for rejection to yield at the given tick.
+     * @returns {MockPromise} A mock Promise which rejects with the given reason.
+     */
+    TestScheduler.prototype.createRejectedPromise = function (ticks, reason) {
+      return new MockPromise(this, [Rx.ReactiveTest.onError(ticks, reason)]);
+    };
+
+    /**
+     * Creates an observer that records received notification messages and timestamps those.
+     * @return Observer that can be used to assert the timing of received notifications.
+     */
+    TestScheduler.prototype.createObserver = function () {
+      return new MockObserver(this);
+    };
+
+    return TestScheduler;
+  })(VirtualTimeScheduler);
+
+  return Rx;
+}));

node_modules/rx/dist/rx.virtualtime.js

@@ -0,0 +1,284 @@
+// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.
+
+;(function (factory) {
+  var objectTypes = {
+    'function': true,
+    'object': true
+  };
+
+  function checkGlobal(value) {
+    return (value && value.Object === Object) ? value : null;
+  }
+
+  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
+  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+  // Because of build optimizers
+  if (typeof define === 'function' && define.amd) {
+    define(['./rx'], function (Rx, exports) {
+      return factory(root, exports, Rx);
+    });
+  } else if (typeof module === 'object' && module && module.exports === freeExports) {
+    module.exports = factory(root, module.exports, require('./rx'));
+  } else {
+    root.Rx = factory(root, {}, root.Rx);
+  }
+}.call(this, function (root, exp, Rx, undefined) {
+
+  // Aliases
+  var Scheduler = Rx.Scheduler,
+    ScheduledItem = Rx.internals.ScheduledItem,
+    SchedulePeriodicRecursive  = Rx.internals.SchedulePeriodicRecursive,
+    PriorityQueue = Rx.internals.PriorityQueue,
+    inherits = Rx.internals.inherits,
+    defaultSubComparer = Rx.helpers.defaultSubComparer,
+    notImplemented = Rx.helpers.notImplemented;
+
+  /** Provides a set of extension methods for virtual time scheduling. */
+  var VirtualTimeScheduler = Rx.VirtualTimeScheduler = (function (__super__) {
+    inherits(VirtualTimeScheduler, __super__);
+
+    /**
+     * Creates a new virtual time scheduler with the specified initial clock value and absolute time comparer.
+     *
+     * @constructor
+     * @param {Number} initialClock Initial value for the clock.
+     * @param {Function} comparer Comparer to determine causality of events based on absolute time.
+     */
+    function VirtualTimeScheduler(initialClock, comparer) {
+      this.clock = initialClock;
+      this.comparer = comparer;
+      this.isEnabled = false;
+      this.queue = new PriorityQueue(1024);
+      __super__.call(this);
+    }
+
+    var VirtualTimeSchedulerPrototype = VirtualTimeScheduler.prototype;
+
+    VirtualTimeSchedulerPrototype.now = function () {
+      return this.toAbsoluteTime(this.clock);
+    };
+
+    VirtualTimeSchedulerPrototype.schedule = function (state, action) {
+      return this.scheduleAbsolute(state, this.clock, action);
+    };
+
+    VirtualTimeSchedulerPrototype.scheduleFuture = function (state, dueTime, action) {
+      var dt = dueTime instanceof Date ?
+        this.toRelativeTime(dueTime - this.now()) :
+        this.toRelativeTime(dueTime);
+
+      return this.scheduleRelative(state, dt, action);
+    };
+
+    /**
+     * Adds a relative time value to an absolute time value.
+     * @param {Number} absolute Absolute virtual time value.
+     * @param {Number} relative Relative virtual time value to add.
+     * @return {Number} Resulting absolute virtual time sum value.
+     */
+    VirtualTimeSchedulerPrototype.add = notImplemented;
+
+    /**
+     * Converts an absolute time to a number
+     * @param {Any} The absolute time.
+     * @returns {Number} The absolute time in ms
+     */
+    VirtualTimeSchedulerPrototype.toAbsoluteTime = notImplemented;
+
+    /**
+     * Converts the TimeSpan value to a relative virtual time value.
+     * @param {Number} timeSpan TimeSpan value to convert.
+     * @return {Number} Corresponding relative virtual time value.
+     */
+    VirtualTimeSchedulerPrototype.toRelativeTime = notImplemented;
+
+    /**
+     * Schedules a periodic piece of work by dynamically discovering the scheduler's capabilities. The periodic task will be emulated using recursive scheduling.
+     * @param {Mixed} state Initial state passed to the action upon the first iteration.
+     * @param {Number} period Period for running the work periodically.
+     * @param {Function} action Action to be executed, potentially updating the state.
+     * @returns {Disposable} The disposable object used to cancel the scheduled recurring action (best effort).
+     */
+    VirtualTimeSchedulerPrototype.schedulePeriodic = function (state, period, action) {
+      var s = new SchedulePeriodicRecursive(this, state, period, action);
+      return s.start();
+    };
+
+    /**
+     * Schedules an action to be executed after dueTime.
+     * @param {Mixed} state State passed to the action to be executed.
+     * @param {Number} dueTime Relative time after which to execute the action.
+     * @param {Function} action Action to be executed.
+     * @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).
+     */
+    VirtualTimeSchedulerPrototype.scheduleRelative = function (state, dueTime, action) {
+      var runAt = this.add(this.clock, dueTime);
+      return this.scheduleAbsolute(state, runAt, action);
+    };
+
+    /**
+     * Starts the virtual time scheduler.
+     */
+    VirtualTimeSchedulerPrototype.start = function () {
+      if (!this.isEnabled) {
+        this.isEnabled = true;
+        do {
+          var next = this.getNext();
+          if (next !== null) {
+            this.comparer(next.dueTime, this.clock) > 0 && (this.clock = next.dueTime);
+            next.invoke();
+          } else {
+            this.isEnabled = false;
+          }
+        } while (this.isEnabled);
+      }
+    };
+
+    /**
+     * Stops the virtual time scheduler.
+     */
+    VirtualTimeSchedulerPrototype.stop = function () {
+      this.isEnabled = false;
+    };
+
+    /**
+     * Advances the scheduler's clock to the specified time, running all work till that point.
+     * @param {Number} time Absolute time to advance the scheduler's clock to.
+     */
+    VirtualTimeSchedulerPrototype.advanceTo = function (time) {
+      var dueToClock = this.comparer(this.clock, time);
+      if (this.comparer(this.clock, time) > 0) { throw new ArgumentOutOfRangeError(); }
+      if (dueToClock === 0) { return; }
+      if (!this.isEnabled) {
+        this.isEnabled = true;
+        do {
+          var next = this.getNext();
+          if (next !== null && this.comparer(next.dueTime, time) <= 0) {
+            this.comparer(next.dueTime, this.clock) > 0 && (this.clock = next.dueTime);
+            next.invoke();
+          } else {
+            this.isEnabled = false;
+          }
+        } while (this.isEnabled);
+        this.clock = time;
+      }
+    };
+
+    /**
+     * Advances the scheduler's clock by the specified relative time, running all work scheduled for that timespan.
+     * @param {Number} time Relative time to advance the scheduler's clock by.
+     */
+    VirtualTimeSchedulerPrototype.advanceBy = function (time) {
+      var dt = this.add(this.clock, time),
+          dueToClock = this.comparer(this.clock, dt);
+      if (dueToClock > 0) { throw new ArgumentOutOfRangeError(); }
+      if (dueToClock === 0) {  return; }
+
+      this.advanceTo(dt);
+    };
+
+    /**
+     * Advances the scheduler's clock by the specified relative time.
+     * @param {Number} time Relative time to advance the scheduler's clock by.
+     */
+    VirtualTimeSchedulerPrototype.sleep = function (time) {
+      var dt = this.add(this.clock, time);
+      if (this.comparer(this.clock, dt) >= 0) { throw new ArgumentOutOfRangeError(); }
+
+      this.clock = dt;
+    };
+
+    /**
+     * Gets the next scheduled item to be executed.
+     * @returns {ScheduledItem} The next scheduled item.
+     */
+    VirtualTimeSchedulerPrototype.getNext = function () {
+      while (this.queue.length > 0) {
+        var next = this.queue.peek();
+        if (next.isCancelled()) {
+          this.queue.dequeue();
+        } else {
+          return next;
+        }
+      }
+      return null;
+    };
+
+    /**
+     * Schedules an action to be executed at dueTime.
+     * @param {Mixed} state State passed to the action to be executed.
+     * @param {Number} dueTime Absolute time at which to execute the action.
+     * @param {Function} action Action to be executed.
+     * @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).
+     */
+    VirtualTimeSchedulerPrototype.scheduleAbsolute = function (state, dueTime, action) {
+      var self = this;
+
+      function run(scheduler, state1) {
+        self.queue.remove(si);
+        return action(scheduler, state1);
+      }
+
+      var si = new ScheduledItem(this, state, run, dueTime, this.comparer);
+      this.queue.enqueue(si);
+
+      return si.disposable;
+    };
+
+    return VirtualTimeScheduler;
+  }(Scheduler));
+
+  /** Provides a virtual time scheduler that uses Date for absolute time and number for relative time. */
+  Rx.HistoricalScheduler = (function (__super__) {
+    inherits(HistoricalScheduler, __super__);
+
+    /**
+     * Creates a new historical scheduler with the specified initial clock value.
+     * @constructor
+     * @param {Number} initialClock Initial value for the clock.
+     * @param {Function} comparer Comparer to determine causality of events based on absolute time.
+     */
+    function HistoricalScheduler(initialClock, comparer) {
+      var clock = initialClock == null ? 0 : initialClock;
+      var cmp = comparer || defaultSubComparer;
+      __super__.call(this, clock, cmp);
+    }
+
+    var HistoricalSchedulerProto = HistoricalScheduler.prototype;
+
+    /**
+     * Adds a relative time value to an absolute time value.
+     * @param {Number} absolute Absolute virtual time value.
+     * @param {Number} relative Relative virtual time value to add.
+     * @return {Number} Resulting absolute virtual time sum value.
+     */
+    HistoricalSchedulerProto.add = function (absolute, relative) {
+      return absolute + relative;
+    };
+
+    HistoricalSchedulerProto.toAbsoluteTime = function (absolute) {
+      return new Date(absolute).getTime();
+    };
+
+    /**
+     * Converts the TimeSpan value to a relative virtual time value.
+     * @memberOf HistoricalScheduler
+     * @param {Number} timeSpan TimeSpan value to convert.
+     * @return {Number} Corresponding relative virtual time value.
+     */
+    HistoricalSchedulerProto.toRelativeTime = function (timeSpan) {
+      return timeSpan;
+    };
+
+    return HistoricalScheduler;
+  }(Rx.VirtualTimeScheduler));
+
+  return Rx;
+}));

node_modules/rx/dist/rx.virtualtime.map

@@ -0,0 +1 @@
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node_modules/rx/dist/rx.virtualtime.min.js

@@ -0,0 +1,3 @@
+/* Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.*/
+(function(a){function b(a){return a&&a.Object===Object?a:null}var c={"function":!0,object:!0},d=c[typeof exports]&&exports&&!exports.nodeType?exports:null,e=c[typeof module]&&module&&!module.nodeType?module:null,f=b(d&&e&&"object"==typeof global&&global),g=b(c[typeof self]&&self),h=b(c[typeof window]&&window),i=(e&&e.exports===d?d:null,b(c[typeof this]&&this)),j=f||h!==(i&&i.window)&&h||g||i||Function("return this")();"function"==typeof define&&define.amd?define(["./rx"],function(b,c){return a(j,c,b)}):"object"==typeof module&&module&&module.exports===d?module.exports=a(j,module.exports,require("./rx")):j.Rx=a(j,{},j.Rx)}).call(this,function(a,b,c,d){var e=c.Scheduler,f=c.internals.ScheduledItem,g=c.internals.SchedulePeriodicRecursive,h=c.internals.PriorityQueue,i=c.internals.inherits,j=c.helpers.defaultSubComparer,k=c.helpers.notImplemented;c.VirtualTimeScheduler=function(a){function b(b,c){this.clock=b,this.comparer=c,this.isEnabled=!1,this.queue=new h(1024),a.call(this)}i(b,a);var c=b.prototype;return c.now=function(){return this.toAbsoluteTime(this.clock)},c.schedule=function(a,b){return this.scheduleAbsolute(a,this.clock,b)},c.scheduleFuture=function(a,b,c){var d=b instanceof Date?this.toRelativeTime(b-this.now()):this.toRelativeTime(b);return this.scheduleRelative(a,d,c)},c.add=k,c.toAbsoluteTime=k,c.toRelativeTime=k,c.schedulePeriodic=function(a,b,c){var d=new g(this,a,b,c);return d.start()},c.scheduleRelative=function(a,b,c){var d=this.add(this.clock,b);return this.scheduleAbsolute(a,d,c)},c.start=function(){if(!this.isEnabled){this.isEnabled=!0;do{var a=this.getNext();null!==a?(this.comparer(a.dueTime,this.clock)>0&&(this.clock=a.dueTime),a.invoke()):this.isEnabled=!1}while(this.isEnabled)}},c.stop=function(){this.isEnabled=!1},c.advanceTo=function(a){var b=this.comparer(this.clock,a);if(this.comparer(this.clock,a)>0)throw new ArgumentOutOfRangeError;if(0!==b&&!this.isEnabled){this.isEnabled=!0;do{var c=this.getNext();null!==c&&this.comparer(c.dueTime,a)<=0?(this.comparer(c.dueTime,this.clock)>0&&(this.clock=c.dueTime),c.invoke()):this.isEnabled=!1}while(this.isEnabled);this.clock=a}},c.advanceBy=function(a){var b=this.add(this.clock,a),c=this.comparer(this.clock,b);if(c>0)throw new ArgumentOutOfRangeError;0!==c&&this.advanceTo(b)},c.sleep=function(a){var b=this.add(this.clock,a);if(this.comparer(this.clock,b)>=0)throw new ArgumentOutOfRangeError;this.clock=b},c.getNext=function(){for(;this.queue.length>0;){var a=this.queue.peek();if(!a.isCancelled())return a;this.queue.dequeue()}return null},c.scheduleAbsolute=function(a,b,c){function d(a,b){return e.queue.remove(g),c(a,b)}var e=this,g=new f(this,a,d,b,this.comparer);return this.queue.enqueue(g),g.disposable},b}(e);return c.HistoricalScheduler=function(a){function b(b,c){var d=null==b?0:b,e=c||j;a.call(this,d,e)}i(b,a);var c=b.prototype;return c.add=function(a,b){return a+b},c.toAbsoluteTime=function(a){return new Date(a).getTime()},c.toRelativeTime=function(a){return a},b}(c.VirtualTimeScheduler),c});
+//# sourceMappingURL=rx.virtualtime.map