after

packages/user_repository/lib/src/repositories/firebase_user_repository.dart

@@ -42,6 +42,11 @@ class FirebaseUserRepository implements UserRepository {
     return _userStreamController.stream;
   }
 
+  @override
+  Stream<bool> isAuthenticated() {
+    return _firebaseAuth.userChanges().map((event) => null != event);
+  }
+
   // Sign up
   @override
   Future<MyUser> signUp(MyUser myUser, String password) async {

packages/user_repository/lib/src/repositories/user_repo.dart

@@ -3,6 +3,7 @@ import '../../user_repository.dart';
 abstract class UserRepository {
   // Stream<User?> get user;
   Stream<MyUser?> streamUser();
+  Stream<bool> isAuthenticated();
 
   Future<void> signIn(String email, String password);