in Sample/SwiftUI-MVVM/TicTacToe/Sources/AppDelegate.swift [26:37]
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
registerProviderFactories()
let window = UIWindow(frame: UIScreen.main.bounds)
self.window = window
let rootComponent = RootComponent()
window.rootViewController = UIHostingController(rootView: rootComponent.rootView)
window.makeKeyAndVisible()
return true
}