fileprivate extension UIWindow {

    func switchRootViewController(_ viewController: UIViewController, duration: TimeInterval = 0.5, options: UIViewAnimationOptions = .transitionFlipFromRight, completion: (() -> Void)? = nil) {

        let previousViewController = rootViewController

        UIView.transition(with: self, duration: duration, options: options, animations: {
            let oldState = UIView.areAnimationsEnabled
            UIView.setAnimationsEnabled(false)
            self.rootViewController = viewController
            UIView.setAnimationsEnabled(oldState)

        }) { _ in
            Workarounds.cleanupWindowAfterRootReplacement(window: self,
                                                          previousViewController: previousViewController)

            completion?()
        }

    }

}