[.38] Returning an Observable from EventEmitter

[ericmdantas]

Looks like we've got a problem with EventEmitters now. Either that or I'm missing something.

Here is the plnkr with the situation: http://plnkr.co/edit/9w5nzAuMkE1BHoTo2GxN?p=preview

Basically, we can't return an observable anymore when using toRx() see the change here.

We can return an observable with _subject, though. But it just doesn't feel right.

Does anyone have any word on it? Should I still be using EventEmitter for that kind of situation or just switch to Rx's Observables?

Here's the full code:

import {Component, View, EventEmitter, OnInit, bootstrap} from 'angular2/angular2';

class SomethingService {
  _ee: EventEmitter = new EventEmitter();

  fireStuff() {
    setTimeout(() => {
      this._ee.next('fire!');
    }, 1000);

    //return this._ee.toRx(); - doesn't work anymore
    return this._ee._subject; // silly work around
  }
}

@Component({
    selector: 'hello',
    viewBindings: [SomethingService]
})
@View({
    template: `
      <h3>hello - uncomment line 11 and comment line 12 to see the error</h3>
      <button type="button"
            (click)="fire()">btn</button>
    <pre [text-content]="f"></pre>
    `
})
export class Hello implements OnInit {
  f: string;

  constructor(private _ss: SomethingService) {

  }

  onInit() {
    console.log('hello init');
  }

  fire() {
    this.f = "loading";

    this._ss
        .fireStuff()
        .subscribe((info) => {
          this.f = info;
        });
  }
}


bootstrap(Hello);

Old issue: #3580

cc: @ericmartinezr @robwormald @pkozlowski-opensource

[robwormald]

fixed in #4540

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