update

Author: saadshams

Sources/PureMVC/core/View.swift

@@ -195,7 +195,7 @@ open class View: IView {
         }
 
         // Create Observer referencing this mediator's handlNotification method
-        let observer = Observer(notifyMethod: mediator.handleNotification, notifyContext: mediator as! Mediator)
+        let observer = Observer(notifyMethod: mediator.handleNotification, notifyContext: mediator)
 
         let interests = mediator.listNotificationInterests()
 

Sources/PureMVC/interfaces/IController.swift

@@ -22,7 +22,7 @@ assumes these responsibilities:
 
 `@see org.puremvc.swift.multicore.interfaces ICommand`
 */
-public protocol IController {
+public protocol IController: AnyObject {
 
     /**
      Initialize the `Controller` instance.

Sources/PureMVC/interfaces/IModel.swift

@@ -17,7 +17,7 @@ An `IModel` assumes these responsibilities:
 * Maintain a cache of `IProxy` instances
 * Provide methods for registering, retrieving, and removing `IProxy` instances
 */
-public protocol IModel {
+public protocol IModel: AnyObject {
 
     /**
      Initialize the `Model` instance.

Sources/PureMVC/interfaces/INotification.swift

@@ -38,7 +38,7 @@ using `Notification`s.
 
 `@see org.puremvc.swift.multicore.interfaces.IObserver IObserver`
 */
-public protocol INotification {
+public protocol INotification: AnyObject {
 
     /// Get the name of the `INotification` instance.
     var name: String { get }

Sources/PureMVC/interfaces/INotifier.swift

@@ -27,7 +27,7 @@ access to the facade anyway.
 
 `@see org.puremvc.swift.multicore.interfaces.INotification INotification`
 */
-public protocol INotifier {
+public protocol INotifier: AnyObject {
 
     /**
     Send a `INotification`.

Sources/PureMVC/interfaces/IObserver.swift

@@ -40,7 +40,7 @@ as a subclass of `Notification`.
 
 `@see org.puremvc.swift.multicore.interfaces.INotification INotification`
 */
-public protocol IObserver {
+public protocol IObserver: AnyObject {
 
     /**
     Set the notification method.

Sources/PureMVC/interfaces/IView.swift

@@ -26,7 +26,7 @@ In PureMVC, the `View` class assumes these responsibilities:
 
 `@see org.puremvc.swift.multicore.interfaces.INotification INotification`
 */
-public protocol IView {
+public protocol IView: AnyObject {
 
     /**
      Initialize the  `View` instance.

Sources/PureMVC/patterns/observer/Notifier.swift

@@ -52,10 +52,12 @@ open class Notifier : INotifier {
 
     /// Reference to the Facade Multiton
     open lazy var facade: IFacade? = {
-        assert(multitonKey != nil, Notifier.MULTITON_MSG)
+        guard let key = multitonKey else {
+            fatalError(Notifier.MULTITON_MSG)
+        }
 
         // returns instance mapped to multitonKey if it exists otherwise defaults to Facade
-        return Facade.getInstance(multitonKey!) { key in Facade(key: key) }
+        return Facade.getInstance(key) { key in Facade(key: key) }
     }()
 
     /// Constructor