Check out example codes for "swift pop to specific view controller". It will help you in understanding the concepts better.

Code Example 1

let viewControllers: [UIViewController] = self.navigationController!.viewControllers
for aViewController in viewControllers {
    if aViewController is YourViewController {
        self.navigationController!.popToViewController(aViewController, animated: true)
    }
}

Learn ReactJs, React Native from akashmittal.com