AngularFire2 4.0.0-rc.0 new AuthAPI - direct access to Firebase

[Jorg Janke]

In 4.0.0-rc.0 a new Auth API was introduced.

Unfortunately, we currently require some features, which are only available in the underlying Firebase js code.

In the previous release, we could get it via 

    constructor(@Inject(FirebaseApp) fa: any, ...) {}

this does not work in the new release. How can we get a reference to the 

    firebase.auth()...

functionality so that it is compatible with the AngularFire2 functionality?

Cheers,

Jorg