Codemod: Give legacy cxx and ObjC-only NativeModules a getTurboModule: method

Summary:
We're making the getTurboModule: method required for all classes that conform to RCTTurboModule.

Many of our ObjC-only and Cxx NativeModules don't implement this method. This diff implements a getTurboModule: method on all those modules that returns nullptr.

**Question:** Why is it fine to make ObjC-only NativeModules return nullptr from their getTurboModule: method?
- Because they're only accessed from ObjC, and should appear as null on the JavaScript side. Longer term, these NativeModules will also go away.

**Question:** Why is it fine to make Cxx NativeModules return nullptr from getTurboModule: method?
- Because after D27316872, the TurboModuleManager checks if the module is a CxxModule first. If it is, we do an early return, and never call the module's getTurboModule: method.

Changelog: [Internal]

Reviewed By: JoshuaGross

Differential Revision: D27316871

fbshipit-source-id: bc693f2927ab3b0de24e6e9e7699390ec0f7d729

Libraries/Image/RCTGIFImageDecoder.mm

@@ -47,6 +47,12 @@ RCT_EXPORT_MODULE()
   return ^{};
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
+    (const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return nullptr;
+}
+
 @end
 
 Class RCTGIFImageDecoderCls() {

Libraries/Image/RCTImageStoreManager.mm

@@ -196,6 +196,11 @@ RCT_EXPORT_METHOD(addImageFromBase64:(NSString *)base64String
   }
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:(const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return std::make_shared<facebook::react::NativeImageStoreIOSSpecJSI>(params);
+}
+
 @end
 
 @implementation RCTImageStoreManager (Deprecated)
@@ -234,11 +239,6 @@ RCT_EXPORT_METHOD(addImageFromBase64:(NSString *)base64String
   });
 }
 
-- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:(const facebook::react::ObjCTurboModule::InitParams &)params
-{
-  return std::make_shared<facebook::react::NativeImageStoreIOSSpecJSI>(params);
-}
-
 @end
 
 @implementation RCTBridge (RCTImageStoreManager)

Libraries/Image/RCTLocalAssetImageLoader.mm

@@ -64,6 +64,11 @@ RCT_EXPORT_MODULE()
   return nil;
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:(const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return nullptr;
+}
+
 @end
 
 Class RCTLocalAssetImageLoaderCls(void) {

Libraries/Network/RCTDataRequestHandler.mm

@@ -76,6 +76,12 @@ RCT_EXPORT_MODULE()
   [op cancel];
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
+    (const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return nullptr;
+}
+
 @end
 
 Class RCTDataRequestHandlerCls(void) {

Libraries/Network/RCTFileRequestHandler.mm

@@ -93,6 +93,12 @@ RCT_EXPORT_MODULE()
   [op cancel];
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
+    (const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return nullptr;
+}
+
 @end
 
 Class RCTFileRequestHandlerCls(void) {

Libraries/Network/RCTHTTPRequestHandler.mm

@@ -174,6 +174,12 @@ didReceiveResponse:(NSURLResponse *)response
   [delegate URLRequest:task didCompleteWithError:error];
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
+    (const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return nullptr;
+}
+
 @end
 
 Class RCTHTTPRequestHandlerCls(void) {

React/CoreModules/RCTEventDispatcher.mm

@@ -224,6 +224,12 @@ RCT_EXPORT_MODULE()
   }
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
+    (const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return nullptr;
+}
+
 @end
 
 Class RCTEventDispatcherCls(void)

React/CoreModules/RCTPerfMonitor.mm

@@ -559,6 +559,12 @@ RCT_EXPORT_MODULE()
   return 20;
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
+    (const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return nullptr;
+}
+
 @end
 
 #endif

React/CoreModules/RCTWebSocketExecutor.mm

@@ -278,6 +278,12 @@ RCT_EXPORT_MODULE()
   RCTAssert(!self.valid, @"-invalidate must be called before -dealloc");
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
+    (const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return nullptr;
+}
+
 @end
 
 #endif

ReactCommon/react/nativemodule/samples/platform/ios/RCTSampleTurboCxxModule.mm

@@ -28,6 +28,12 @@ RCT_EXPORT_MODULE();
   return nullptr;
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
+    (const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return nullptr;
+}
+
 @end
 
 @implementation RCTSampleTurboCxxModule_v2
@@ -39,4 +45,10 @@ RCT_EXPORT_MODULE();
   return std::make_unique<react::SampleTurboCxxModuleLegacyImpl>();
 }
 
+- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
+    (const facebook::react::ObjCTurboModule::InitParams &)params
+{
+  return nullptr;
+}
+
 @end