ErrorKit

ErrorKit is initialized with singleton access to MobKit.setup function. It has a delegate for observing error events occurred in your application. You need to listen to its delegate when your application starts. Ideally, it's Scene Delegate's scene(_, willConnectTo:) (alternatively, App Delegate's didFinishLaunchingWithOptions) function.

import UIKit
import MobKitCore
import ErrorKit

class SceneDelegate: UIResponder, UIWindowSceneDelegate {
    ...
    func scene(_ scene: UIScene,
               willConnectTo session: UISceneSession,
               options connectionOptions: UIScene.ConnectionOptions) {
        guard let _ = (scene as? UIWindowScene) else { return }
        MobKit.setup(with: [ErrorKit.self])
        ErrorKit.shared().delegate = self
    }
    ...
}

Then you need to extend SceneDelegate (or alternatively, AppDelegate) with ErrorKitDelegate:

extension SceneDelegate: ErrorKitDelegate {
    func errorKitDidCatch(networkingError: NetworkingError) {
        // Network errors occured during making request or receiving response.
    }
    
    func errorKitDidCatch(serializationError: NetworkingError) {
        // JSON (de-)serialization error with type
        // NetworkingError.encodingError or NetworkingError.decodingError
    }
    
    func errorKitDidCatch(cryptographyError: Error) {
        // Cryptography errors occurred while secure network usage.
    }
}