Angular2 RxJS getting 'Observable_1.Observable.fromEvent is not a function' error

Question

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 Obse

Answer 1

The problem seemed to be that the import statement should look like this:

import {Observable} from 'rxjs/Rx';

Note that Observable is being brought in from rxjs/Rx instead of from rxjs/Observable. As @EricMartinez mentions, pulling it in this way will automagically get you all of the operators (like .map()).

Answer 2

Its definitly not needed to import all operators at once! You just imported fromEvent wrong. You could do it like this:

import {Observable} from 'rxjs/Observable';
import 'rxjs/add/observable/fromEvent';

EDIT: In addititon to what I already wrote: tree-shaking with the AoT-Compiler of angular removes unused code, based on what you import. If you just import some objects or functions from rxjs/rx, the compiler can't remove anything. Always import just, what you need!