fix: dimensions, use RCTMainWindow()

packages/react-native/Libraries/AppDelegate/RCTAppDelegate.h

@@ -159,7 +159,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (BOOL)bridgelessEnabled;
 
 /// Return the bundle URL for the main bundle.
-- (NSURL *)bundleURL;
+- (NSURL *__nullable)bundleURL;
 
 /// Don't use this method, it's going to be removed soon.
 - (UIView *)viewWithModuleName:(NSString *)moduleName initialProperties:(NSDictionary*)initialProperties launchOptions:(NSDictionary*)launchOptions;

packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm

@@ -312,6 +312,9 @@ - (Class)getModuleClassFromName:(const char *)name
 
 - (void)createReactHost
 {
+  if (_reactHost != nil) {
+    return;
+  }
   __weak __typeof(self) weakSelf = self;
   _reactHost = [[RCTHost alloc] initWithBundleURL:[self bundleURL]
                                      hostDelegate:nil

packages/react-native/Libraries/SwiftExtensions/RCTMainWindow.swift

@@ -0,0 +1,34 @@
+import SwiftUI
+
+/**
+ This SwiftUI struct returns main React Native scene. It should be used only once as it conains setup code.
+
+ Example:
+ ```swift
+ @main
+ struct YourApp: App {
+   @UIApplicationDelegateAdaptor var delegate: AppDelegate
+
+   var body: some Scene {
+     RCTMainWindow(moduleName: "YourApp")
+   }
+ }
+ ```
+
+ Note: If you want to create additional windows in your app, create a new `WindowGroup {}` and pass it a `RCTRootViewRepresentable`.
+*/
+public struct RCTMainWindow: Scene {
+  var moduleName: String
+  var initialProps: RCTRootViewRepresentable.InitialPropsType
+
+  public init(moduleName: String, initialProps: RCTRootViewRepresentable.InitialPropsType = nil) {
+    self.moduleName = moduleName
+    self.initialProps = initialProps
+  }
+
+  public var body: some Scene {
+    WindowGroup {
+      RCTRootViewRepresentable(moduleName: moduleName, initialProps: initialProps)
+    }
+  }
+}

packages/react-native/Libraries/SwiftExtensions/RCTReactViewController.h

@@ -1,9 +1,14 @@
 #import <UIKit/UIKit.h>
 
+/**
+  A `UIViewController` responsible for embeding `RCTRootView` inside. Uses Factory pattern to retrive new view instances.
+ 
+  Note: Used to in `RCTRootViewRepresentable` to display React views.
+ */
 @interface RCTReactViewController : UIViewController
 
-@property (nonatomic, strong) NSString *_Nonnull moduleName;
-@property (nonatomic, strong) NSDictionary *_Nullable initialProps;
+@property (nonatomic, strong, nonnull) NSString *moduleName;
+@property (nonatomic, strong, nullable) NSDictionary *initialProps;
 
 - (instancetype _Nonnull)initWithModuleName:(NSString *_Nonnull)moduleName
                                    initProps:(NSDictionary *_Nullable)initProps;

packages/react-native/Libraries/SwiftExtensions/RCTReactViewController.m

@@ -1,4 +1,5 @@
 #import "RCTReactViewController.h"
+#import <React/RCTConstants.h>
 
 @protocol RCTRootViewFactoryProtocol <NSObject>
 
@@ -16,6 +17,10 @@ - (instancetype)initWithModuleName:(NSString *)moduleName initProps:(NSDictionar
     return self;
 }
 
+- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator {
+  [[NSNotificationCenter defaultCenter] postNotificationName:RCTWindowFrameDidChangeNotification object:self];
+}
+
 // TODO: Temporary solution for creating RCTRootView on demand. This should be done through factory pattern, see here: https://github.com/facebook/react-native/pull/42263
 - (void)loadView {
     id<UIApplicationDelegate> appDelegate = [UIApplication sharedApplication].delegate;

packages/react-native/Libraries/SwiftExtensions/RCTRootViewRepresentable.swift

@@ -1,20 +1,23 @@
 import SwiftUI
 
-/*
- * Use this struct in SwiftUI context to present React Native rootView.
- *
- * Example:
- * ```
- *  WindowGroup {
- *    RCTRootViewRepresentable(moduleName: "RNTesterApp", initialProps: [:])
- *  }
- * ```
- */
+/**
+ SwiftUI view enclosing `RCTReactViewController`. Its main purpose is to display React Native views inside of SwiftUI lifecycle.
+
+ Use it create new windows in your app:
+ Example:
+ ```swift
+  WindowGroup {
+    RCTRootViewRepresentable(moduleName: "YourAppName", initialProps: [:])
+  }
+ ```
+*/
 public struct RCTRootViewRepresentable: UIViewControllerRepresentable {
+  public typealias InitialPropsType = [AnyHashable: Any]?
+
   var moduleName: String
-  var initialProps: [AnyHashable: Any]?
+  var initialProps: InitialPropsType
 
-  public init(moduleName: String, initialProps: [AnyHashable : Any]?) {
+  public init(moduleName: String, initialProps: InitialPropsType = nil) {
     self.moduleName = moduleName
     self.initialProps = initialProps
   }

packages/react-native/Libraries/SwiftExtensions/React-RCTSwiftExtensions.podspec

@@ -22,4 +22,6 @@ Pod::Spec.new do |s|
   s.source                 = source
   s.source_files           = "*.{swift,h,m}"
   s.frameworks = ["UIKit", "SwiftUI"]
+
+  s.dependency "React-Core"
 end

packages/react-native/React/Base/RCTBridgeDelegate.h

@@ -20,7 +20,7 @@ NS_ASSUME_NONNULL_BEGIN
  * When running from a locally bundled JS file, this should be a `file://` url
  * pointing to a path inside the app resources, e.g. `file://.../main.jsbundle`.
  */
-- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge;
+- (NSURL *__nullable)sourceURLForBridge:(RCTBridge *)bridge;
 
 @optional
 

packages/react-native/template/_gitignore

@@ -65,3 +65,4 @@ yarn-error.log
 
 # testing
 /coverage
+.yarn

packages/react-native/template/visionos/HelloWorld.xcodeproj/project.pbxproj

@@ -10,8 +10,8 @@
 		00E356F31AD99517003FC87E /* HelloWorldTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 00E356F21AD99517003FC87E /* HelloWorldTests.m */; };
 		0C80B921A6F3F58F76C31292 /* libPods-HelloWorld.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 5DCACB8F33CDC322A6C60F78 /* libPods-HelloWorld.a */; };
 		13B07FBF1A68108700A75B9A /* Images.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 13B07FB51A68108700A75B9A /* Images.xcassets */; };
-		767CEB962B56C0F3000139AD /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 767CEB952B56C0F3000139AD /* AppDelegate.swift */; };
-		767CEB982B56C0FA000139AD /* App.swift in Sources */ = {isa = PBXBuildFile; fileRef = 767CEB972B56C0FA000139AD /* App.swift */; };
+		767CEBBC2B582F6B000139AD /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 767CEBBB2B582F6B000139AD /* AppDelegate.swift */; };
+		767CEBBE2B582F78000139AD /* App.swift in Sources */ = {isa = PBXBuildFile; fileRef = 767CEBBD2B582F78000139AD /* App.swift */; };
 		7699B88040F8A987B510C191 /* libPods-HelloWorld-HelloWorldTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 19F6CBCC0A4E27FBF8BF4A61 /* libPods-HelloWorld-HelloWorldTests.a */; };
 /* End PBXBuildFile section */
 
@@ -37,8 +37,8 @@
 		5709B34CF0A7D63546082F79 /* Pods-HelloWorld.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-HelloWorld.release.xcconfig"; path = "Target Support Files/Pods-HelloWorld/Pods-HelloWorld.release.xcconfig"; sourceTree = "<group>"; };
 		5B7EB9410499542E8C5724F5 /* Pods-HelloWorld-HelloWorldTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-HelloWorld-HelloWorldTests.debug.xcconfig"; path = "Target Support Files/Pods-HelloWorld-HelloWorldTests/Pods-HelloWorld-HelloWorldTests.debug.xcconfig"; sourceTree = "<group>"; };
 		5DCACB8F33CDC322A6C60F78 /* libPods-HelloWorld.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-HelloWorld.a"; sourceTree = BUILT_PRODUCTS_DIR; };
-		767CEB952B56C0F3000139AD /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = AppDelegate.swift; path = VisionAppTestSUI/AppDelegate.swift; sourceTree = "<group>"; };
-		767CEB972B56C0FA000139AD /* App.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = App.swift; path = VisionAppTestSUI/App.swift; sourceTree = "<group>"; };
+		767CEBBB2B582F6B000139AD /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = AppDelegate.swift; path = HelloWorld/AppDelegate.swift; sourceTree = "<group>"; };
+		767CEBBD2B582F78000139AD /* App.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = App.swift; path = HelloWorld/App.swift; sourceTree = "<group>"; };
 		89C6BE57DB24E9ADA2F236DE /* Pods-HelloWorld-HelloWorldTests.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-HelloWorld-HelloWorldTests.release.xcconfig"; path = "Target Support Files/Pods-HelloWorld-HelloWorldTests/Pods-HelloWorld-HelloWorldTests.release.xcconfig"; sourceTree = "<group>"; };
 		ED297162215061F000B7C4FE /* JavaScriptCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = JavaScriptCore.framework; path = System/Library/Frameworks/JavaScriptCore.framework; sourceTree = SDKROOT; };
 /* End PBXFileReference section */
@@ -83,8 +83,8 @@
 		13B07FAE1A68108700A75B9A /* HelloWorld */ = {
 			isa = PBXGroup;
 			children = (
-				767CEB952B56C0F3000139AD /* AppDelegate.swift */,
-				767CEB972B56C0FA000139AD /* App.swift */,
+				767CEBBB2B582F6B000139AD /* AppDelegate.swift */,
+				767CEBBD2B582F78000139AD /* App.swift */,
 				13B07FB51A68108700A75B9A /* Images.xcassets */,
 				13B07FB61A68108700A75B9A /* Info.plist */,
 			);
@@ -386,8 +386,8 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				767CEB962B56C0F3000139AD /* AppDelegate.swift in Sources */,
-				767CEB982B56C0FA000139AD /* App.swift in Sources */,
+				767CEBBC2B582F6B000139AD /* AppDelegate.swift in Sources */,
+				767CEBBE2B582F78000139AD /* App.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

packages/react-native/template/visionos/HelloWorld/App.swift

@@ -7,8 +7,6 @@ struct HelloWorldApp: App {
   @UIApplicationDelegateAdaptor var delegate: AppDelegate
 
   var body: some Scene {
-    WindowGroup {
-      RCTRootViewRepresentable(moduleName: "HelloWorld", initialProps: nil)
-    }
+    RCTMainWindow(moduleName: "HelloWorld")
   }
 }

packages/react-native/template/visionos/HelloWorld/AppDelegate.swift

@@ -9,7 +9,7 @@ class AppDelegate: RCTAppDelegate {
 
   override func bundleURL() -> URL? {
 #if DEBUG
-    RCTBundleURLProvider.sharedSettings().jsBundleURL(forBundleRoot: "index")
+    RCTBundleURLProvider.sharedSettings()?.jsBundleURL(forBundleRoot: "index")
 #else
     Bundle.main.url(forResource: "main", withExtension: "jsbundle")
 #endif

packages/rn-tester/Podfile.lock

@@ -1069,7 +1069,8 @@ PODS:
     - React-jsi
     - React-NativeModulesApple
     - ReactCommon
-  - React-RCTSwiftExtensions (1000.0.0)
+  - React-RCTSwiftExtensions (1000.0.0):
+    - React-Core
   - React-RCTTest (1000.0.0):
     - RCT-Folly (= 2024.01.01.00)
     - React-Core (= 1000.0.0)
@@ -1419,65 +1420,66 @@ CHECKOUT OPTIONS:
 SPEC CHECKSUMS:
   boost: 8f1e9b214fa11f71081fc8ecd5fad3daf221cf7f
   DoubleConversion: 71bf0761505a44e4dfddc0aa04afa049fdfb63b5
-  FBLazyVector: 5fdead7fff97d43aacf320bcccb748cf8527af07
+  FBLazyVector: e34ddc4948ab5a9f857262cf68a46d39d8c61ed1
   fmt: 5d9ffa7ccba126c08b730252123601d514652320
   glog: 4f05d17aa39a829fee878689fc9a41af587fabba
   hermes-engine: 3fed7e58e811ae8f795063cc6450714395c0276d
   MyNativeView: 534e99e9c5dfd0bae242bdb06bb72e11d720c9a2
   NativeCxxModuleExample: 107af3af8f5ce8802037937aabf1872ac891ad43
   OCMock: 267d92c078398b7ce11d99e811e3a402744c06bc
-  RCT-Folly: d8c13e288297f63c0db8f083cfedebdd2649a299
+  RCT-Folly: 70c792c856324d6a518af75b3a307c14c226343a
   RCTDeprecation: 3808e36294137f9ee5668f4df2e73dc079cd1dcf
-  RCTRequired: 6b32de28a5215a5990284d541bbdec8b5e3c78bf
-  RCTTypeSafety: 0e2bb3047d531a60b28b1d0d63e0c27a742a3019
-  React: a6f80cd5ba07887121f8b480991e17041a838f5c
-  React-callinvoker: d558dab7c4d987f1577838a50d59aeb069130d91
+  RCTRequired: 60c97b0b0cc33a209d33b3412eb1a218cbc1b82c
+  RCTTypeSafety: 2f597b431b910be1e49c6e6f40dd6879f6d1bdfd
+  React: dc827cd6966c06176ea9664cb4d74d63d1a4fcca
+  React-callinvoker: 3727946c98d5626aef39ac6a45b9d1be5db35527
   React-Codegen: 04a9ac6fd2f392534ed432102c6cbf117dcbf62b
-  React-Core: 6403b0d9390e408017e82dc7823e059c53186141
-  React-CoreModules: 6406001452f46e9234a2fac3861a60786285acc0
-  React-cxxreact: f917d87380150aaaf8053fb4280358aad33c9b71
-  React-debug: c12ba28faf2c0aace7cbc81d7ac7661075976460
-  React-Fabric: 1d2070e13efd26fa34bb67cf484794265402ac06
-  React-FabricImage: 238905c6db0cf533d562b52ae936bfd7ed5f00dc
-  React-graphics: c430227a30690a86be35a8fb8c4c36ff312ff4bc
-  React-hermes: f6b54c8b4553fc7a8926f3e46459923a834a99d4
-  React-ImageManager: 38795ba06968bbcb11343b9e1123557af34c6270
-  React-jserrorhandler: fba402f8090b05e29c57c7bb111413e12e89aebe
-  React-jsi: d5643763df3910249aac671c9b7d634e6e96af7b
-  React-jsiexecutor: 847a90333a8840846652833aa4e291e433277aec
-  React-jsinspector: c2abef5095276eeb09c4b871f3024851d2ac3e58
-  React-jsitracing: 3f24b1171cc7aa986555a84e1036d3a6ba98bc84
-  React-logger: 4b1ded6e5707b276ffd58505987aba8dd1c0c3e4
-  React-Mapbuffer: b562329b31a9a5e3f18a8b4632c4fa8945a504e8
-  React-nativeconfig: 86b0961752d6a00ccc30418bfb5bfb5ebda84149
-  React-NativeModulesApple: eb4d247f32f25df62d1e979721502203db3de17c
-  React-perflogger: 31792e118e9c4785739c1823a481d64ba3d512b9
-  React-RCTActionSheet: a79621f1907340e31a66a4ad5e89175ef13f4215
-  React-RCTAnimation: 1f6948befc38688ecd5e78b7afd7d356aafa79b3
-  React-RCTAppDelegate: 9b0ecae938c894f4678a5e4726c03a06e92b0d93
-  React-RCTBlob: afaf18b4618c4d71095dfae9fca7c548dbcf0da0
-  React-RCTFabric: 0e96635634399a9ccf6c3c7fb18d5bac8e2561d5
-  React-RCTImage: 280f6f62a88f13253013ab5709e7bc60259cc081
-  React-RCTLinking: 9757d922aaa9aea2baa6e6178a8b1f08c1a85add
-  React-RCTNetwork: 92e96ad358d83b5a809e6222987c77106f44691e
-  React-RCTPushNotification: 36ec0c6d3ab1195665c49c0cfd689864401cc111
-  React-RCTSettings: 758a24aefbee012d903ca4f80532e95edfe2b516
-  React-RCTTest: a30b88c8910a259ef769af7654b1812668019b22
-  React-RCTText: ff85a26056ca9a34198934774e0f75ac2305c2c0
-  React-RCTVibration: 5086b14f98c2255e71cc6a2213b6f67338dcdff4
-  React-rendererdebug: 6e0021971efb40a76f807b913fdba6ec3ecabbd0
-  React-rncore: 27b4d75d116e9ae44292dc26aecff5bbad9e6996
-  React-RuntimeApple: c18cc85bf03a322efd2a76fd48f4c693d6901e67
-  React-RuntimeCore: 631803674e2884b5d866aacac96850191a081e1a
-  React-runtimeexecutor: a6b1c771b522e49e6906c5354b0e8859a64e7b3e
-  React-RuntimeHermes: 1473abdead583d8ab788ebd31de9c8e81e19d0fc
-  React-runtimescheduler: 1b905cb65942a3bfdff3f003c9c778b6b46afca6
-  React-utils: a5c7207b3bd558fdbfc553ea7a7731fbfc7f3552
-  ReactCommon: 2c87b20987de3a37d3993e4c1cab34fb97c28899
-  ReactCommon-Samples: e95d8d284b23ed4eda37498eaa460b6468c24699
+  React-Core: eb5002d75c263aaa042b97853effd3b6e2f8668c
+  React-CoreModules: 1eb22960e980f9e0b80542da464c5935260fd180
+  React-cxxreact: eb5eb55bffe0ccff4cbf192a04c978e37f137e8f
+  React-debug: 1d5a869d405ca2410bfc95c7fe340220331696ef
+  React-Fabric: 555fc115322e9b37b8cc1d4ac0ab8d4a87718077
+  React-FabricImage: 657d05951f1a512496713d7c2d534d347915fe3b
+  React-graphics: 989577b97b4d5e8f3cd3ff86b275eb7e4c7ff657
+  React-hermes: 0003c9f0f623ed87224f4415c567f90f0d15737f
+  React-ImageManager: ec80ccfd373893be8c347a23a693438b41a86e2a
+  React-jserrorhandler: c4126c1c2fb42540cf64fdc80917214a0c6ca905
+  React-jsi: 81558ed18c4e91824280a3298d75d598ef4cf3fa
+  React-jsiexecutor: 139ad70390e61c6b00779d82c7d5f490cd3eb632
+  React-jsinspector: bd27899ffc61660559bfbc8872e8d8de05b2612d
+  React-jsitracing: 9639d0659449fa9a71f31e28d7dde349bcec3394
+  React-logger: 142bc8479d40940294428f652fb016b809335121
+  React-Mapbuffer: 2762ea21725665466ea54f09848886f5ba7e97f7
+  React-nativeconfig: f984aee5151a69d520ea830756b33c62acc5c269
+  React-NativeModulesApple: 5fd38cf3bd4aca4adc9522a7a53681001f98f29d
+  React-perflogger: b19adeb816c255a04dff9528cf3f6bf209188d17
+  React-RCTActionSheet: c07c3924b6a94602f40effc130b776faa8b6bab1
+  React-RCTAnimation: 51f5a6be1479336b26d0cb282bd0e8f1feabf593
+  React-RCTAppDelegate: 3cac28ed63e10086624a2d965ce2c3359bbe04b0
+  React-RCTBlob: 0d6f17d4cacc18b6872b06b232186b176d4a8a18
+  React-RCTFabric: 8b955856519621a30a8425ac6c594abb66788839
+  React-RCTImage: c69ac72c257475c7860602ac11beaabd7862b99c
+  React-RCTLinking: c3f99ac575655569f5bc108ff13b816dcdf1dbfd
+  React-RCTNetwork: 39405b5687d5b16fdcc6466713930e71f8389cde
+  React-RCTPushNotification: 8b6b936f8e07096db581a446d4f9844ff8b35925
+  React-RCTSettings: 96dad99a283d67c573b8ba3709725901e8ac3108
+  React-RCTSwiftExtensions: b372ca0daf79796645c691841b470ad5d37bba64
+  React-RCTTest: 11be8ba66b91bc914d31f2b7c9abd0c39d47a3d7
+  React-RCTText: 8ca2156c782dc33ceb3fa80ce8c20cfcccbcc9d1
+  React-RCTVibration: 284a9575d09b5c5517d5d5b8b86d4e2d3c324b5e
+  React-rendererdebug: d664023e12af482bb3911ce547c522ddbbf01ac5
+  React-rncore: 5917d667ddd77e1938a9d1dabf5c503e427f9ec9
+  React-RuntimeApple: 31c6a97b53e53ea3e0d071ca45471b9152d22dc3
+  React-RuntimeCore: 25febc097f3f7d4043562fcf5c7bf406758ad1ce
+  React-runtimeexecutor: b66459278d0c6564b5d877107e0bb3ac953a8221
+  React-RuntimeHermes: 3f46517238fed32a04b36c6bc41a4ac8508baf6e
+  React-runtimescheduler: 04123aa94f0fa33398b9e58cd4345cac230eaee7
+  React-utils: bdfeb70a54b7b73533de6c8b679143f75c34c86a
+  ReactCommon: 8f6a345ebd9558892a83e1be6b83bdad4fd99078
+  ReactCommon-Samples: 090dcc2659d35c5577955d89efac618595a72e61
   ScreenshotManager: a5f596498de38f3cf3377df636ca67355503f190
   SocketRocket: 0ba3e799f983d2dfa878777017659ef6c866e5c6
-  Yoga: e4691eb7881cae15f847654cf06b0f7962707af0
+  Yoga: ac56a983bdf421a579c197143f79aa568f1c74a1
 
 PODFILE CHECKSUM: 7e999b8158f1055609ef4491bc35f1ad658fdd6c
 

packages/rn-tester/RNTester-visionOS/App.swift

@@ -7,8 +7,6 @@ struct RNTesterApp: App {
   @UIApplicationDelegateAdaptor var delegate: AppDelegate
 
   var body: some Scene {
-    WindowGroup {
-      RCTRootViewRepresentable(moduleName: "RNTesterApp", initialProps: nil)
-    }
+    RCTMainWindow(moduleName: "RNTesterApp")
   }
 }

packages/rn-tester/RNTester-visionOS/AppDelegate.swift

@@ -8,6 +8,6 @@ class AppDelegate: RCTAppDelegate {
   }
 
   override func bundleURL() -> URL? {
-    RCTBundleURLProvider.sharedSettings().jsBundleURL(forBundleRoot: "js/RNTesterApp.ios")
+    RCTBundleURLProvider.sharedSettings()?.jsBundleURL(forBundleRoot: "js/RNTesterApp.ios")
   }
 }