feat: add method to deallocate reactNativeFactory instance for iOS

docs/OBJECTIVE_C.md

@@ -70,6 +70,16 @@ Examples:
 }, launchOptions];
 ```
 
+`stopReactNative`
+
+Stops React Native and releases the underlying runtime. Safe to call multiple times. Call it after all React Native views are dismissed.
+
+Examples:
+
+```objc
+[[ReactNativeBrownfield shared] stopReactNative];
+```
+
 `view`
 
 Creates a React Native view for the specified module name.

docs/SWIFT.md

@@ -70,6 +70,16 @@ ReactNativeBrownfield.shared.startReactNative(onBundleLoaded: {
 }, launchOptions: launchOptions)
 ```
 
+`stopReactNative`
+
+Stops React Native and releases the underlying runtime. Safe to call multiple times. Call it after all React Native views are dismissed.
+
+Examples:
+
+```swift
+ReactNativeBrownfield.shared.stopReactNative()
+```
+
 `view`
 
 Creates a React Native view for the specified module name.

example/swift/App.swift

@@ -24,11 +24,19 @@ struct ContentView: View {
           .font(.title)
           .bold()
           .padding()
+          .multilineTextAlignment(.center)
 
         NavigationLink("Push React Native Screen") {
           ReactNativeView(moduleName: "ReactNative")
             .navigationBarHidden(true)
         }
+
+        Button("Stop React Native") {
+          ReactNativeBrownfield.shared.stopReactNative()
+        }
+        .buttonStyle(PlainButtonStyle())
+        .padding(.top)
+        .foregroundColor(.red)
       }
     }
   }

ios/ReactNativeBrownfield.swift

@@ -32,6 +32,13 @@ class ReactNativeBrownfieldDelegate: RCTDefaultReactNativeFactoryDelegate {
   private var onBundleLoaded: (() -> Void)?
   private var delegate = ReactNativeBrownfieldDelegate()
 
+  private func checkFactoryInitialized(launchOptions: [AnyHashable: Any]? = nil) {
+    if reactNativeFactory == nil {
+      delegate.dependencyProvider = RCTAppDependencyProvider()
+      self.reactNativeFactory = RCTReactNativeFactory(delegate: delegate)
+    }
+  }
+
   /**
    * Path to JavaScript root.
    * Default value: "index"
@@ -88,7 +95,9 @@ class ReactNativeBrownfieldDelegate: RCTDefaultReactNativeFactoryDelegate {
     initialProps: [AnyHashable: Any]?,
     launchOptions: [AnyHashable: Any]? = nil
   ) -> UIView? {
-    reactNativeFactory?.rootViewFactory.view(
+      checkFactoryInitialized(launchOptions: launchOptions)
+
+      return reactNativeFactory?.rootViewFactory.view(
       withModuleName: moduleName,
       initialProperties: initialProps,
       launchOptions: launchOptions
@@ -112,9 +121,7 @@ class ReactNativeBrownfieldDelegate: RCTDefaultReactNativeFactoryDelegate {
    */
   @objc public func startReactNative(onBundleLoaded: (() -> Void)?, launchOptions: [AnyHashable: Any]?) {
     guard reactNativeFactory == nil else { return }
-
-    delegate.dependencyProvider = RCTAppDependencyProvider()
-    self.reactNativeFactory = RCTReactNativeFactory(delegate: delegate)
+      checkFactoryInitialized(launchOptions: launchOptions)
 
     if let onBundleLoaded {
       self.onBundleLoaded = onBundleLoaded
@@ -136,6 +143,25 @@ class ReactNativeBrownfieldDelegate: RCTDefaultReactNativeFactoryDelegate {
     }
   }
 
+  /**
+   * Stops React Native and releases the underlying factory instance.
+   */
+  @objc public func stopReactNative() {
+    if !Thread.isMainThread {
+      DispatchQueue.main.async { [weak self] in self?.stopReactNative() }
+      return
+    }
+
+    guard let factory = reactNativeFactory else { return }
+
+    factory.bridge?.invalidate()
+
+    NotificationCenter.default.removeObserver(self)
+    onBundleLoaded = nil
+
+    reactNativeFactory = nil
+  }
+
   @objc private func jsLoaded(_ notification: Notification) {
     onBundleLoaded?()
     onBundleLoaded = nil