What is it?
firebase-thermite-ng contains the Angular modules for
firebase-thermite - a library of RxJS observables for Firebase.
Why might you need it?
You might need it if the official Angular library for Firebase - AngularFire2 - does not suit your requirements.
How does it differ from AngularFire2?
The differencees between
firebase-thermite and AngularFire2 are listed here.
In addition to those,
firebase-thermite-ng differs from AngularFire2 in that it ensures subscribers execute within the Angular zone. With AngularFire2, subscribers execute within the zone in which the observable was created.
With the modules imported,
ThermiteDatabase are then available for injection into components, etc.
firebase.database.Database and both include additional methods that create observables. See