import { useState } from 'react'; import { AppShell, type PageKey } from './layout/AppShell'; import { Dashboard } from './pages/Dashboard'; import { History } from './pages/History'; import { Mileage } from './pages/Mileage'; import { Quality } from './pages/Quality'; import { Realtime } from './pages/Realtime'; import { VehicleDetail } from './pages/VehicleDetail'; import { Vehicles } from './pages/Vehicles'; const pages: Record = { dashboard: , vehicles: , realtime: , detail: , history: , mileage: , quality: }; export default function App() { const [activePage, setActivePage] = useState('dashboard'); return ( {pages[activePage]} ); }