UINavigationController extension for pop to specific view controller type + completion after pop (For push to new VC).

UINavigationController+Extension.swift

extension UINavigationController {
    func popToViewControllerType<ViewControllerType: UIViewController>(_ type: ViewControllerType.Type,
                                                                       animated: Bool = false,
                                                                       completion: ((UINavigationController) -> Void)? = nil) {
        for eachVC in self.viewControllers {
            if eachVC.isKind(of: type.self) {
                self.popToViewController(eachVC, animated: animated)
                completion?(self)
                break
            }
        }
    }
}