firebase create user email token rest code example
Example 1: firebase sign up with email and password
firebase.auth().createUserWithEmailAndPassword(email, password).catch(function(error) { // Handle Errors here. var errorCode = error.code; var errorMessage = error.message; // ...});email-password.html
Example 2: how to sign out user in flutter with firebase authentication
final FirebaseAuth _auth = FirebaseAuth.instance;
Future<void> _signOut() async {
await _auth.signOut();
await _googleSignIn.signOut();
}