Take an early look at RxFire – an official library combining RxJS & Firebase for better control over realtime streams https://angularfirebase.com/lessons/introduction-to-rxfire-rxjs-for-firebase/
– RxFire https://www.npmjs.com/package/rxfire
– Stencil https://stenciljs.com/
– RxJS https://github.com/ReactiveX/rxjs