Realtime User Presence with Firebase & Angular - Online | Offline | Away

Build a realtime user presence system with AngularFire that can set the public status of a user to online 💚, offline 🔴, or away 💤. https://fireship.io/lessons/realtime-presence-angular-firebase/

NgClass https://angular.io/api/common/NgClass Firebase Presence https://firebase.google.com/docs/firestore/solutions/presence ... https://www.youtube.com/watch?v=bL3I7Pls-1w