Minor code cleanup

Author: rickclephas

KMPObservableViewModelCore/ObservableViewModelPublisher.swift

@@ -58,6 +58,16 @@ public final class ObservableViewModelPublisher: Combine.Publisher, KMPObservabl
     }
 }
 
+internal extension KMPObservableViewModelCoreObjC.Publisher {
+    /// Casts this `Publisher` to an `ObservableViewModelPublisher`.
+    func cast() -> ObservableViewModelPublisher {
+        guard let publisher = self as? ObservableViewModelPublisher else {
+            fatalError("Publisher must be an ObservableViewModelPublisher")
+        }
+        return publisher
+    }
+}
+
 /// Subscriber for `ObservableViewModelPublisher` that creates `ObservableViewModelSubscription`s.
 private class ObservableViewModelSubscriber<S>: Subscriber where S : Subscriber, Never == S.Failure, Void == S.Input {
     typealias Input = Void

KMPObservableViewModelCore/ViewModel.swift

@@ -22,7 +22,7 @@ public protocol ViewModel: ObservableObject where ObjectWillChangePublisher == O
 public extension ViewModel {
     var viewModelWillChange: ObservableViewModelPublisher {
         if let publisher = viewModelScope.publisher {
-            return publisher as! ObservableViewModelPublisher
+            return publisher.cast()
         }
         let publisher = ObservableViewModelPublisher(self)
         viewModelScope.publisher = publisher

kmp-observableviewmodel-core/src/androidxMain/kotlin/com/rickclephas/kmp/observableviewmodel/ViewModel.kt

@@ -8,7 +8,7 @@ import kotlinx.coroutines.CoroutineScope
 import kotlin.reflect.KClass
 
 /**
- * A Kotlin Multiplatform Mobile ViewModel.
+ * A Kotlin Multiplatform ViewModel.
  */
 public actual abstract class ViewModel: AndroidXViewModel {
 

kmp-observableviewmodel-core/src/appleMain/kotlin/com/rickclephas/kmp/observableviewmodel/NativeViewModelScope.kt

@@ -8,7 +8,7 @@ import platform.darwin.NSObject
  * Implementation of [ViewModelScope] for Apple platforms.
  * @property coroutineScope The [CoroutineScope] associated with the [ViewModel].
  */
-internal class NativeViewModelScope internal constructor(
+internal class NativeViewModelScope(
     val coroutineScope: CoroutineScope
 ): NSObject(), ViewModelScope {
 

kmp-observableviewmodel-core/src/commonMain/kotlin/com/rickclephas/kmp/observableviewmodel/ViewModel.kt

@@ -3,7 +3,7 @@ package com.rickclephas.kmp.observableviewmodel
 import kotlinx.coroutines.CoroutineScope
 
 /**
- * A Kotlin Multiplatform Mobile ViewModel.
+ * A Kotlin Multiplatform ViewModel.
  */
 public expect abstract class ViewModel {
 

kmp-observableviewmodel-core/src/nonAndroidxMain/kotlin/com/rickclephas/kmp/observableviewmodel/ViewModel.kt

@@ -4,7 +4,7 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.cancel
 
 /**
- * A Kotlin Multiplatform Mobile ViewModel.
+ * A Kotlin Multiplatform ViewModel.
  */
 public actual abstract class ViewModel {