fix(newArch): fixes how the availability of Turbo Modules is being detected

CHANGELOG.md

@@ -14,6 +14,10 @@
 - Support New Hermes Runtime Access Pattern ([#5051](https://github.com/getsentry/sentry-react-native/pull/5051))
 - Support Metro 0.83 ([#5035](https://github.com/getsentry/sentry-react-native/pull/5035))
 
+### Fixes
+
+- Correct detection of whether turbo modules are available ([#5064](https://github.com/getsentry/sentry-react-native/pull/5064))
+
 ### Dependencies
 
 - Bump CLI from v2.50.2 to v2.51.1 ([#5053](https://github.com/getsentry/sentry-react-native/pull/5053), [#5058](https://github.com/getsentry/sentry-react-native/pull/5058))

packages/core/src/js/utils/environment.ts

@@ -11,7 +11,8 @@ export function isHermesEnabled(): boolean {
 
 /** Checks if the React Native TurboModules are enabled */
 export function isTurboModuleEnabled(): boolean {
-  return RN_GLOBAL_OBJ.__turboModuleProxy != null;
+  // Reference: https://github.com/facebook/react-native/blob/641a79dc5137b69a3c0813413b9fb82d0b9df783/packages/react-native/src/private/featureflags/ReactNativeFeatureFlagsBase.js#L110
+  return RN_GLOBAL_OBJ.RN$Bridgeless === true || RN_GLOBAL_OBJ.__turboModuleProxy != null;
 }
 
 /** Checks if the React Native Fabric renderer is running */

packages/core/src/js/utils/worldwide.ts

@@ -20,6 +20,7 @@ export interface ReactNativeInternalGlobal extends InternalGlobal {
   };
   Promise: unknown;
   __turboModuleProxy: unknown;
+  RN$Bridgeless: unknown;
   nativeFabricUIManager: unknown;
   ErrorUtils?: ErrorUtils;
   expo?: ExpoGlobalObject;