diff --git a/React/Base/RCTBridgeDelegate.h b/React/Base/RCTBridgeDelegate.h
index c237b9880..5133d6fb0 100644
--- a/React/Base/RCTBridgeDelegate.h
+++ b/React/Base/RCTBridgeDelegate.h
@@ -72,4 +72,9 @@
 - (void)loadSourceForBridge:(RCTBridge *)bridge
                   withBlock:(RCTSourceLoadBlock)loadCallback;
 
+/**
+ * Retrieve the list of lazy-native-modules names for the given bridge.
+ */
+- (NSDictionary<NSString *, Class> *)extraLazyModuleClassesForBridge:(RCTBridge *)bridge;
+
 @end
diff --git a/React/CxxBridge/RCTCxxBridge.mm b/React/CxxBridge/RCTCxxBridge.mm
index 9124fc185..29d5361bd 100644
--- a/React/CxxBridge/RCTCxxBridge.mm
+++ b/React/CxxBridge/RCTCxxBridge.mm
@@ -301,6 +301,7 @@ struct RCTInstanceCallback : public InstanceCallback {
   [self registerExtraModules];
   // Initialize all native modules that cannot be loaded lazily
   (void)[self _initializeModules:RCTGetModuleClasses() withDispatchGroup:prepareBridge lazilyDiscovered:NO];
+  [self registerExtraLazyModules];
 
   [_performanceLogger markStopForTag:RCTPLNativeModuleInit];
 
@@ -600,6 +601,57 @@ struct RCTInstanceCallback : public InstanceCallback {
   RCT_PROFILE_END_EVENT(RCTProfileTagAlways, @"");
 }
 
+- (void)registerExtraLazyModules
+{
+#if RCT_DEBUG
+  // This is debug-only and only when Chrome is attached, since it expects all modules to be already
+  // available on start up. Otherwise, we can let the lazy module discovery to load them on demand.
+  Class executorClass = [_parentBridge executorClass];
+  if (executorClass && [NSStringFromClass(executorClass) isEqualToString:@"RCTWebSocketExecutor"]) {
+    NSDictionary<NSString *, Class> *moduleClasses = nil;
+    if ([self.delegate respondsToSelector:@selector(extraLazyModuleClassesForBridge:)]) {
+      moduleClasses = [self.delegate extraLazyModuleClassesForBridge:_parentBridge];
+    }
+
+    if (!moduleClasses) {
+      return;
+    }
+
+    // This logic is mostly copied from `registerModulesForClasses:`, but with one difference:
+    // we must use the names provided by the delegate method here.
+    for (NSString *moduleName in moduleClasses) {
+      Class moduleClass = moduleClasses[moduleName];
+      if (RCTJSINativeModuleEnabled() && [moduleClass conformsToProtocol:@protocol(RCTJSINativeModule)]) {
+        continue;
+      }
+
+      // Check for module name collisions
+      RCTModuleData *moduleData = _moduleDataByName[moduleName];
+      if (moduleData) {
+        if (moduleData.hasInstance) {
+          // Existing module was preregistered, so it takes precedence
+          continue;
+        } else if ([moduleClass new] == nil) {
+          // The new module returned nil from init, so use the old module
+          continue;
+        } else if ([moduleData.moduleClass new] != nil) {
+          // Both modules were non-nil, so it's unclear which should take precedence
+          RCTLogError(@"Attempted to register RCTBridgeModule class %@ for the "
+                      "name '%@', but name was already registered by class %@",
+                      moduleClass, moduleName, moduleData.moduleClass);
+        }
+      }
+
+      moduleData = [[RCTModuleData alloc] initWithModuleClass:moduleClass bridge:self];
+
+      _moduleDataByName[moduleName] = moduleData;
+      [_moduleClassesByID addObject:moduleClass];
+      [_moduleDataByID addObject:moduleData];
+    }
+  }
+#endif
+}
+
 - (NSArray<RCTModuleData *> *)_initializeModules:(NSArray<id<RCTBridgeModule>> *)modules
                                withDispatchGroup:(dispatch_group_t)dispatchGroup
                                 lazilyDiscovered:(BOOL)lazilyDiscovered