可观察到的Angular2无法正常工作

Question

I am using peerjs library to build a chat. I'm trying to do an observable to trigger an event every time I get a new message.

this.data = new Observable(observer => {
                   this.peer.on('connection', (data) => {
                    alert("TRIGGER");
                    observer.next(data);   
                });
             })


             this.peerMessages = this.data.subscribe(message => {
                alert(message);
            });

I can see the first alert but the second one never triggers. I don't get any error from the browser console. What am I doing wrong?

Im trying to use an observer because instead of alert(message) I want to change a variable from the angular component.

Answer 1

The code looks good, but make sure you import everything you need. For example, if using rxjs :

import { Observable, ... } from 'rxjs/Observable';