Flutter Riverpod and Firebase Auth example

auth_providers.dart

import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

final firebaseAuthProvider = Provider<FirebaseAuth>((ref) {
  return FirebaseAuth.instance;
});

final authStateChangesProvider = StreamProvider<User>((ref) {
  return ref.watch(firebaseAuthProvider).authStateChanges();
});

career_center_app.dart

import 'package:flutter/material.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';

import 'auth/auth_providers.dart';
import 'auth/email_login_screen.dart';
import 'auth/login_screen.dart';
import 'home/home_screen.dart';

class CareerCenterApp extends ConsumerWidget {
  @override
  Widget build(BuildContext context, ScopedReader watch) {
    final user = watch(authStateChangesProvider).data?.value;

    return MaterialApp(
      title: 'Career Center',
      theme: ThemeData(
        primarySwatch: Colors.indigo,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: user != null ? HomeScreen() : LoginScreen(),
      routes: {
        EmailLoginScreen.route: (context) => EmailLoginScreen(),
      },
    );
  }
}

I tried with the same code and it didn't work for me.