iOS UIView Extension - Get the frame of view relative to the desired superview

UIView+.swift

import UIKit

extension UIView {
    
    func frameRelative(to targetSuperView: UIView) -> CGRect {
        var view = self
        var rect = view.frame
        
        while let sv = view.superview {
            if sv == targetSuperView {
                return rect
            }
            rect = view.convert(rect, to: sv)
            view = sv
        }
        
        return rect
    }
    
}