I'm using AngularJS 2 Beta 0 and I'm trying to create an RxJS Observable from an event on a window object. I believe I know the formula for capturing the event as an Observable in my service:

var observ = Observable.fromEvent(this.windowHandle, 'hashchange');

The problem is that every time I try run this code, I get an error stating that 'fromEvent' is not a function.

Uncaught EXCEPTION: Error during evaluation of click

ORIGINAL EXCEPTION: TypeError: Observable_1.Observable.fromEvent is not a function

This seems to imply to me that I'm not handling my import correctly now that RxJS is not included in the build of Angular 2, though the rest of my application functions properly, which to me means that RxJS is where it is supposed to be.

My import in the service looks like this:

import {Observable} from 'rxjs/Observable';

Though I have also tried to use this instead (with the appropriate changes to the code), with the same results:

import {FromEventObservable} from 'rxjs/observable/fromEvent';

I have the following configuration in my Index.html:

<script>

    System.config({

        map: {

            rxjs: 'node_modules/rxjs'

        },

        packages: {

            'app': {defaultExtension: 'js'},

            'rxjs': {defaultExtension: 'js'}

        }

    });

    System.import('app/app');

</script>

Can somebody tell me what I'm doing incorrectly?