Several "session_start" event are created on iOS 15

When the app is in background, Analytics receives a large numbers of "session-start" events for an user. This issue is caused by the life cycle inconsistency of Swift apps on iOS 15.

This issue is in the firebase-ios-sdk repository since August... More information:

https://github.com/firebase/firebase-ios-sdk/issues/6161

My company has contacted with Google and the solution we have received is this code has to implemented:

class AppDelegate: UIResponder, UIApplicationDelegate {
  static var isFirebaseAppConfigured = false

  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // Don't call FirebaseApp.configure() here.
    return true
  }

  // MARK: UISceneSession Lifecycle
  func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
    // Ensure FirebaseApp.configure() gets called only once.
    if (!AppDelegate.isFirebaseAppConfigured) {
      FirebaseApp.configure()
      AppDelegate.isFirebaseAppConfigured = true
    }
    ...
  }
...
}

Does the code have to be on nativescript-plugin-firebase or can it be implemented through a hook?

My configuration:

nativescript: 6.8.0
tns-core-modules: ^6.5.27
tns-ios: ^6.5.4
nativescript-plugin-firebase: ^10.6.3

EddyVerbruggen / nativescript-plugin-firebase

Several "session_start" event are created on iOS 15 #1869