Angularfire: Document how to subscribe to authentication events

[mypark]

I'm just getting into angular2 so not sure how I would subscribe to the onAuth event using angularFire2. I see documentation on how to subscribe to the auth state in the template but maybe you can also add a javascript example that lets you subscribe to login and logout events? I'm not sure how to use the ReplaySubject class.

[davideast]

The auth property also works as an observable, so you can subscribe to changes:

constructor(af: AngularFire) {
  af.auth.subscribe(auth => {
    if(auth) {
      console.log('logged in');
    } else {
      console.log('not logged in');
    }
  });
}

There will be a big docs update in the near future so stay tuned :boom:

[mypark]

awesome... also is there a way I can find out if the current session or user is authenticated from the controller without a subscription?

[vargalas]

When will be this big documentation update? It still has no good docs, I think.
It's a pity, though.