react-native-reanimated: Native side not loading with custom AppDelegate.swift

Description

I am receiving the following error after converting the AppDelegate.mm to AppDelegate.swift:

Error: [Reanimated] The native part of Reanimated doesn’t seem to be initialized.

AppDelegate.swift

import Foundation

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
  var window: UIWindow?
  var bridge: RCTBridge!

  func application(_ application:UIApplication, didFinishLaunchingWithOptions launchOptions:[UIApplication.LaunchOptionsKey : Any]?) -> Bool {
    let jsCodeLocation: URL
    
    jsCodeLocation = RCTBundleURLProvider.sharedSettings().jsBundleURL(forBundleRoot: "index")

    let rootView = RCTRootView(bundleURL: jsCodeLocation, moduleName: "DigitalFrontDoor", initialProperties: nil, launchOptions: launchOptions)

    let rootViewController = UIViewController()
    rootViewController.view = rootView
    self.window = UIWindow(frame: UIScreen.main.bounds)
    self.window?.rootViewController = rootViewController
    self.window?.makeKeyAndVisible()
    
    return true
    
  }


  /// This method controls whether the `concurrentRoot`feature of React18 is turned on or off.
  ///
  /// @see: https://reactjs.org/blog/2022/03/29/react-v18.html
  /// @note: This requires to be rendering on Fabric (i.e. on the New Architecture).
  /// @return: `true` if the `concurrentRoot` feature is enabled. Otherwise, it returns `false`.
  func concurrentRootEnabled() -> Bool {
    return true
  }
}

Notes:

• The iOS build is completing successfully
• Android is working as expected
• I have tried removing the Pods, node_modules, build folders and reinstalling everything.
• I have tried restarting my computer
• Converting the AppDelegate to swift works without Reanimated
• I have followed this post for the AppDelegate swift migration (https://ospfranco.com/post/2021/07/31/migrate-rn-appdelegate-to-swift/)

Steps to reproduce

I have two Branches as follows:

• Branch 1 (reanimated): Regular AppDelegate with Reanimated, In this branch everything works as expected in both platforms
• Branch 2 (swift-app-delegate): Swift AppDelegate without Reanimated, In this branch everything works as expected in both platforms

When both branches are merged (swift-appdelegate-reanimated), getting Swift AppDelegate With Reanimated, the iOS build works, but when the app is launched I get the error:

Snack or a link to a repository

https://github.com/danielRChildrens/SwiftReanimated/tree/swift-appdelegate-reanimated

Reanimated version

3.3.0

React Native version

0.71.6

Platforms

iOS

JavaScript runtime

Hermes

Workflow

React Native (without Expo)

Architecture

Paper (Old Architecture)

Build type

Debug mode

Device

iOS simulator

Device model

iOS 16 iphone 14

Acknowledgements

Yes