Update ModuleRegistry if there're new modules registered

Reviewed By: fkgozali

Differential Revision: D7638394

fbshipit-source-id: c1690da7977f0335bc661df5f19dc9f473150d41

React/CxxBridge/RCTCxxBridge.mm

@@ -310,7 +310,7 @@ - (void)start
 
   [self registerExtraModules];
   // Initialize all native modules that cannot be loaded lazily
-  [self _initModules:RCTGetModuleClasses() withDispatchGroup:prepareBridge lazilyDiscovered:NO];
+  (void)[self _initializeModules:RCTGetModuleClasses() withDispatchGroup:prepareBridge lazilyDiscovered:NO];
 
   [_performanceLogger markStopForTag:RCTPLNativeModuleInit];
 
@@ -623,9 +623,9 @@ - (void)registerExtraModules
   RCT_PROFILE_END_EVENT(RCTProfileTagAlways, @"");
 }
 
-- (void)_initModules:(NSArray<id<RCTBridgeModule>> *)modules
-   withDispatchGroup:(dispatch_group_t)dispatchGroup
-    lazilyDiscovered:(BOOL)lazilyDiscovered
+- (NSArray<RCTModuleData *> *)_initializeModules:(NSArray<id<RCTBridgeModule>> *)modules
+                               withDispatchGroup:(dispatch_group_t)dispatchGroup
+                                lazilyDiscovered:(BOOL)lazilyDiscovered
 {
   RCTAssert(!(RCTIsMainQueue() && lazilyDiscovered), @"Lazy discovery can only happen off the Main Queue");
 
@@ -676,11 +676,15 @@ - (void)_initModules:(NSArray<id<RCTBridgeModule>> *)modules
     RCTProfileHookModules(self);
   }
 #endif
+  return moduleDataById;
 }
 
 - (void)registerAdditionalModuleClasses:(NSArray<Class> *)modules
 {
-  [self _initModules:modules withDispatchGroup:NULL lazilyDiscovered:YES];
+  NSArray<RCTModuleData *> *newModules = [self _initializeModules:modules withDispatchGroup:NULL lazilyDiscovered:YES];
+  if (_reactInstance) {
+    _reactInstance->getModuleRegistry().registerModules(createNativeModules(newModules, self, _reactInstance));
+  }
 }
 
 - (void)_prepareModulesWithDispatchGroup:(dispatch_group_t)dispatchGroup