How do you check if a user is authenticated in Firebase?

Verify ID tokens using the Firebase Admin SDK If the provided ID token has the correct format, is not expired, and is properly signed, the method returns the decoded ID token . You can grab the uid of the user or device from the decoded token.

“firebase auth check if user is logged in” Code Answer

Firebase Authentication provides backend services, easy-to-use SDKs, and ready-made UI libraries to authenticate users to your app . It supports authentication using passwords, phone numbers, popular federated identity providers like Google, Facebook and Twitter, and more.