UIKit deinit isolation implementation

DeinitIsolation.swift

import UIKit

class ParentViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        let childVC = ChildViewController()
        displayContentController(content: childVC)
    }
    
    func displayContentController(content: UIViewController) {
        addChild(content)
        self.view.addSubview(content.view)
        content.didMove(toParent: self)
    }
    
    deinit {
        // ❌ This will cause an error in Swift 6 strict concurrency mode
        children.forEach { child in
            child.willMove(toParent: nil)
            child.view.removeFromSuperview()
            child.removeFromParent()
        }
    }
}

class FixedParentViewController: UIViewController {
    
    private weak var childVC: ChildViewController?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        let childVC = ChildViewController()
        displayContentController(content: childVC)
        self.childVC = childVC
    }
    
    func displayContentController(content: UIViewController) {
        addChild(content)
        self.view.addSubview(content.view)
        content.didMove(toParent: self)
    }
    
    deinit {
        //MainActor isolation and no strong self capture
        Task { @MainActor [childVC] in
            childVC?.willMove(toParent: nil)
            childVC?.view.removeFromSuperview()
            childVC?.removeFromParent()
        }
    }
    
}

class ChildViewController: UIViewController {}