// App Component // Main application component - handles authentication state and routing function App() { const [user, setUser] = useState(null); const [token, setToken] = useState(localStorage.getItem('token')); useEffect(() => { if (token) { const userData = JSON.parse(localStorage.getItem('user') || '{}'); setUser(userData); } }, []); const handleLogin = (userData, userToken) => { setUser(userData); setToken(userToken); localStorage.setItem('token', userToken); localStorage.setItem('user', JSON.stringify(userData)); }; const handleLogout = () => { setUser(null); setToken(null); localStorage.removeItem('token'); localStorage.removeItem('user'); }; return ( {user ? : } ); } // Export to global scope window.App = App;