feat(ios): expose RCTModuleRegistry to HybridObjects

packages/react-native-nitro-modules/ios/turbomodule/NativeNitroModules+NewArch.mm

@@ -23,6 +23,10 @@
 @interface NativeNitroModules () <RCTTurboModuleWithJSIBindings>
 @end
 
+// Captured once when RN decorates this module at startup; lets any Nitro
+// HybridObject reach sibling RN modules on iOS via +sharedModuleRegistry.
+static RCTModuleRegistry* gNitroSharedModuleRegistry = nil;
+
 /**
  * NativeNitroModules implementation for the new architecture.
  * This uses `installJSIBindingsWithRuntime:` to install the `global.NitroModulesProxy` into the JS Runtime.
@@ -31,9 +35,21 @@ @implementation NativeNitroModules {
   bool _didInstall;
   NSString* _Nullable _errorMessage;
   std::weak_ptr<react::CallInvoker> _callInvoker;
+  __weak RCTModuleRegistry* _moduleRegistry;
 }
 RCT_EXPORT_MODULE(NitroModules)
 
+- (RCTModuleRegistry*)moduleRegistry {
+  return _moduleRegistry;
+}
+- (void)setModuleRegistry:(RCTModuleRegistry*)moduleRegistry {
+  _moduleRegistry = moduleRegistry;
+  gNitroSharedModuleRegistry = moduleRegistry;
+}
++ (nullable RCTModuleRegistry*)sharedModuleRegistry {
+  return gNitroSharedModuleRegistry;
+}
+
 - (void)installJSIBindingsWithRuntime:(jsi::Runtime&)runtime {
   // 1. Get CallInvoker we cached statically
   std::shared_ptr<react::CallInvoker> callInvoker = _callInvoker.lock();

packages/react-native-nitro-modules/ios/turbomodule/NativeNitroModules+OldArch.mm

@@ -24,13 +24,30 @@ - (void*)runtime;
 - (std::shared_ptr<react::CallInvoker>)jsCallInvoker;
 @end
 
+// Captured when RN decorates this module; lets any Nitro HybridObject reach
+// sibling RN modules on iOS via +sharedModuleRegistry.
+static RCTModuleRegistry* gNitroSharedModuleRegistry = nil;
+
 /**
  * NativeNitroModules implementation for the old architecture.
  * This uses `RCTBridge` to grab the `jsi::Runtime` and `react::CallInvoker`.
  */
-@implementation NativeNitroModules
+@implementation NativeNitroModules {
+  __weak RCTModuleRegistry* _moduleRegistry;
+}
 RCT_EXPORT_MODULE(NitroModules)
 
+- (RCTModuleRegistry*)moduleRegistry {
+  return _moduleRegistry;
+}
+- (void)setModuleRegistry:(RCTModuleRegistry*)moduleRegistry {
+  _moduleRegistry = moduleRegistry;
+  gNitroSharedModuleRegistry = moduleRegistry;
+}
++ (nullable RCTModuleRegistry*)sharedModuleRegistry {
+  return gNitroSharedModuleRegistry;
+}
+
 RCT_EXPORT_BLOCKING_SYNCHRONOUS_METHOD(install) {
   try {
     // 1. Cast RCTBridge to a RCTCxxBridge (ObjC)

packages/react-native-nitro-modules/ios/turbomodule/NativeNitroModules.h

@@ -5,18 +5,27 @@
 //  Created by Marc Rousavy on 07.10.24.
 //
 
+// RCTModuleRegistry + the moduleRegistry property that RN injects into bridge modules.
+#import <React/RCTBridgeModule.h>
+
 #ifdef RCT_NEW_ARCH_ENABLED
 
 // New Architecture uses the Codegen'd Spec (TurboModule)
 #import <NitroModulesSpec/NitroModulesSpec.h>
 @interface NativeNitroModules : NSObject <NativeNitroModulesSpec>
+@property (nonatomic, weak) RCTModuleRegistry *moduleRegistry;
+/// The RCTModuleRegistry RN injected into this module, captured so any Nitro
+/// HybridObject can reach sibling RN modules on iOS (analog of Android's applicationContext).
++ (nullable RCTModuleRegistry *)sharedModuleRegistry;
 @end
 
 #else
 
 // Old Architecture is an untyped RCTBridgeModule
-#import <React/RCTBridgeModule.h>
 @interface NativeNitroModules : NSObject <RCTBridgeModule>
+@property (nonatomic, weak) RCTModuleRegistry *moduleRegistry;
+/// See above.
++ (nullable RCTModuleRegistry *)sharedModuleRegistry;
 @end
 
 #endif