ghostgram/submodules/TelegramUI/Components/RichTextEditor/Demo/Sources/SceneDelegate.swift

import UIKit

final class SceneDelegate: UIResponder, UIWindowSceneDelegate {
    var window: UIWindow?
    func scene(_ scene: UIScene, willConnectTo session: UISceneSession,
               options connectionOptions: UIScene.ConnectionOptions) {
        guard let windowScene = scene as? UIWindowScene else { return }
        let window = UIWindow(windowScene: windowScene)
        window.rootViewController = DemoViewController()
        self.window = window
        window.makeKeyAndVisible()
    }
}