hunk.code_window:         count: 9
         };
         dispatch.call({}, state);
         expect(state.subscriber.complete).have.been.called;
         expect(state.subscriber.next).not.have.been.called;
       });
  
hunk.labels: keep keep keep replace keep keep keep keep
hunk.after_edit:       dispatch.call({} as any, state);
  
hunk.file_path: spec/observables/range-spec.ts
hunk.type: replace
file: import { Observable } from '../Observable';
  import { isArray } from '../util/isArray';
  import { isFunction } from '../util/isFunction';
  import { Subscriber } from '../Subscriber';
  import { map } from '../operators/map';
  
  const toString: Function = (() => Object.prototype.toString)();
  
  export interface NodeStyleEventEmitter {
    addListener: (eventName: string | symbol, handler: NodeEventHandler) => this;
    removeListener: (eventName: string | symbol, handler: NodeEventHandler) => this;
  }
  
  export type NodeEventHandler = (...args: any[]) => void;
  
  // For APIs that implement `addListener` and `removeListener` methods that may
  // not use the same arguments or return EventEmitter values
  // such as React Native
  export interface NodeCompatibleEventEmitter {
    addListener: (eventName: string, handler: NodeEventHandler) => void | {};
    removeListener: (eventName: string, handler: NodeEventHandler) => void | {};
  }
  
  export interface JQueryStyleEventEmitter {
    on: (eventName: string, handler: Function) => void;
    off: (eventName: string, handler: Function) => void;
  }
  
  export interface HasEventTargetAddRemove<E> {
    addEventListener(type: string, listener: ((evt: E) => void) | null, options?: boolean | AddEventListenerOptions): void;
    removeEventListener(type: string, listener?: ((evt: E) => void) | null, options?: EventListenerOptions | boolean): void;
  }
  
  export type EventTargetLike<T> = HasEventTargetAddRemove<T> | NodeStyleEventEmitter | NodeCompatibleEventEmitter | JQueryStyleEventEmitter;
  
  export type FromEventTarget<T> = EventTargetLike<T> | ArrayLike<EventTargetLike<T>>;
  
  export interface EventListenerOptions {
    capture?: boolean;
    passive?: boolean;
    once?: boolean;
  }
  
  export interface AddEventListenerOptions extends EventListenerOptions {
    once?: boolean;
    passive?: boolean;
  }
  
  /* tslint:disable:max-line-length */
  export function fromEvent<T>(target: FromEventTarget<T>, eventName: string): Observable<T>;
  /** @deprecated resultSelector no longer supported, pipe to map instead */
  export function fromEvent<T>(target: FromEventTarget<T>, eventName: string, resultSelector: (...args: any[]) => T): Observable<T>;
  export function fromEvent<T>(target: FromEventTarget<T>, eventName: string, options: EventListenerOptions): Observable<T>;
  /** @deprecated resultSelector no longer supported, pipe to map instead */
  export function fromEvent<T>(target: FromEventTarget<T>, eventName: string, options: EventListenerOptions, resultSelector: (...args: any[]) => T): Observable<T>;
  /* tslint:enable:max-line-length */
  
  /**
   * Creates an Observable that emits events of a specific type coming from the
   * given event target.
   *
   * <span class="informal">Creates an Observable from DOM events, or Node.js
   * EventEmitter events or others.</span>
   *
   * ![](fromEvent.png)
   *
   * `fromEvent` accepts as a first argument event target, which is an object with methods
   * for registering event handler functions. As a second argument it takes string that indicates
   * type of event we want to listen for. `fromEvent` supports selected types of event targets,
   * which are described in detail below. If your event target does not match any of the ones listed,
   * you should use {@link fromEventPattern}, which can be used on arbitrary APIs.
   * When it comes to APIs supported by `fromEvent`, their methods for adding and removing event
   * handler functions have different names, but they all accept a string describing event type
   * and function itself, which will be called whenever said event happens.
   *
   * Every time resulting Observable is subscribed, event handler function will be registered
   * to event target on given event type. When that event fires, value
   * passed as a first argument to registered function will be emitted by output Observable.
   * When Observable is unsubscribed, function will be unregistered from event target.
   *
   * Note that if event target calls registered function with more than one argument, second
   * and following arguments will not appear in resulting stream. In order to get access to them,
   * you can pass to `fromEvent` optional project function, which will be called with all arguments
   * passed to event handler. Output Observable will then emit value returned by project function,
   * instead of the usual value.
   *
   * Remember that event targets listed below are checked via duck typing. It means that
   * no matter what kind of object you have and no matter what environment you work in,
   * you can safely use `fromEvent` on that object if it exposes described methods (provided
   * of course they behave as was described above). So for example if Node.js library exposes
   * event target which has the same method names as DOM EventTarget, `fromEvent` is still
   * a good choice.
   *
   * If the API you use is more callback then event handler oriented (subscribed
   * callback function fires only once and thus there is no need to manually
   * unregister it), you should use {@link bindCallback} or {@link bindNodeCallback}
   * instead.
   *
   * `fromEvent` supports following types of event targets:
   *
   * **DOM EventTarget**
   *
   * This is an object with `addEventListener` and `removeEventListener` methods.
   *
   * In the browser, `addEventListener` accepts - apart from event type string and event
   * handler function arguments - optional third parameter, which is either an object or boolean,
   * both used for additional configuration how and when passed function will be called. When
   * `fromEvent` is used with event target of that type, you can provide this values
   * as third parameter as well.
   *
   * **Node.js EventEmitter**
   *
   * An object with `addListener` and `removeListener` methods.
   *
   * **JQuery-style event target**
   *
   * An object with `on` and `off` methods
   *
   * **DOM NodeList**
   *
   * List of DOM Nodes, returned for example by `document.querySelectorAll` or `Node.childNodes`.
   *
   * Although this collection is not event target in itself, `fromEvent` will iterate over all Nodes
   * it contains and install event handler function in every of them. When returned Observable
   * is unsubscribed, function will be removed from all Nodes.
   *
   * **DOM HtmlCollection**
   *
   * Just as in case of NodeList it is a collection of DOM nodes. Here as well event handler function is
   * installed and removed in each of elements.
   *
   *
   * ## Examples
   * ### Emits clicks happening on the DOM document
   * ```ts
   * import { fromEvent } from 'rxjs';
   *
   * const clicks = fromEvent(document, 'click');
   * clicks.subscribe(x => console.log(x));
   *
   * // Results in:
   * // MouseEvent object logged to console every time a click
   * // occurs on the document.
   * ```
   *
   * ### Use addEventListener with capture option
   * ```ts
   * import { fromEvent } from 'rxjs';
   *
   * const clicksInDocument = fromEvent(document, 'click', true); // note optional configuration parameter
   *                                                              // which will be passed to addEventListener
   * const clicksInDiv = fromEvent(someDivInDocument, 'click');
   *
   * clicksInDocument.subscribe(() => console.log('document'));
   * clicksInDiv.subscribe(() => console.log('div'));
   *
   * // By default events bubble UP in DOM tree, so normally
   * // when we would click on div in document
   * // "div" would be logged first and then "document".
   * // Since we specified optional `capture` option, document
   * // will catch event when it goes DOWN DOM tree, so console
   * // will log "document" and then "div".
   * ```
   *
   * @see {@link bindCallback}
   * @see {@link bindNodeCallback}
   * @see {@link fromEventPattern}
   *
   * @param {FromEventTarget<T>} target The DOM EventTarget, Node.js
   * EventEmitter, JQuery-like event target, NodeList or HTMLCollection to attach the event handler to.
   * @param {string} eventName The event name of interest, being emitted by the
   * `target`.
   * @param {EventListenerOptions} [options] Options to pass through to addEventListener
   * @return {Observable<T>}
   * @name fromEvent
   */
  export function fromEvent<T>(
    target: FromEventTarget<T>,
    eventName: string,
    options?: EventListenerOptions | ((...args: any[]) => T),
    resultSelector?: ((...args: any[]) => T)
  ): Observable<T> {
  
    if (isFunction(options)) {
      // DEPRECATED PATH
      resultSelector = options;
      options = undefined;
    }
    if (resultSelector) {
      // DEPRECATED PATH
      return fromEvent<T>(target, eventName, <EventListenerOptions | undefined>options).pipe(
        map(args => isArray(args) ? resultSelector(...args) : resultSelector(args))
      );
    }
  
    return new Observable<T>(subscriber => {
      function handler(e: T) {
        if (arguments.length > 1) {
          subscriber.next(Array.prototype.slice.call(arguments));
        } else {
          subscriber.next(e);
        }
      }
      setupSubscription(target, eventName, handler, subscriber, options as EventListenerOptions);
    });
  }
  
  function setupSubscription<T>(sourceObj: FromEventTarget<T>, eventName: string,
                                handler: (...args: any[]) => void, subscriber: Subscriber<T>,
                                options?: EventListenerOptions) {
    let unsubscribe: () => void;
    if (isEventTarget(sourceObj)) {
      const source = sourceObj;
      sourceObj.addEventListener(eventName, handler, options);
      unsubscribe = () => source.removeEventListener(eventName, handler, options);
    } else if (isJQueryStyleEventEmitter(sourceObj)) {
      const source = sourceObj;
      sourceObj.on(eventName, handler);
      unsubscribe = () => source.off(eventName, handler);
    } else if (isNodeStyleEventEmitter(sourceObj)) {
      const source = sourceObj;
      sourceObj.addListener(eventName, handler as NodeEventHandler);
      unsubscribe = () => source.removeListener(eventName, handler as NodeEventHandler);
    } else if (sourceObj && (sourceObj as any).length) {
      for (let i = 0, len = (sourceObj as any).length; i < len; i++) {
        setupSubscription(sourceObj[i], eventName, handler, subscriber, options);
      }
    } else {
      throw new TypeError('Invalid event target');
    }
  
    subscriber.add(unsubscribe);
  }
  
  function isNodeStyleEventEmitter(sourceObj: any): sourceObj is NodeStyleEventEmitter {
    return sourceObj && typeof sourceObj.addListener === 'function' && typeof sourceObj.removeListener === 'function';
  }
  
  function isJQueryStyleEventEmitter(sourceObj: any): sourceObj is JQueryStyleEventEmitter {
    return sourceObj && typeof sourceObj.on === 'function' && typeof sourceObj.off === 'function';
  }
  
  function isEventTarget(sourceObj: any): sourceObj is HasEventTargetAddRemove<any> {
    return sourceObj && typeof sourceObj.addEventListener === 'function' && typeof sourceObj.removeEventListener === 'function';
  }
  