How do I detect if a user is already logged in Firebase?

Question

I\'m using the firebase node api in my javascript files for Google login.

firebase.initializeApp(config);
let provider = new firebase.auth.GoogleAuthProvide         


        

Answer 1

First import the following

import Firebase
import FirebaseAuth

Then

    // Check if logged in
    if (Auth.auth().currentUser != null) {
      // User is logged in   
    }else{
      // User is not logged in
    }