jutsu-react-native:react-native-native-modules

Native modules bridge JavaScript and platform-specific code, letting you call Swift, Objective-C, Kotlin, or Java directly from React Native. You create a native module, wrap it with TypeScript, register it, and invoke it via promise-based calls or events from your JS code.

Turbo Modules are the modern approach, offering better performance and type safety compared to legacy native modules. Both bridge native code, but Turbo Modules use a more efficient bridge protocol and provide stricter type checking for safer cross-platform communication.

Yes. Native modules let you wrap third-party iOS and Android libraries with JavaScript bindings. You expose the library's functions through a custom native module, handle platform-specific linking, and access them from React Native without rewriting the native code.

Use promise-based calls for request-response patterns or event-driven communication for asynchronous updates. Native modules accept parameters, return values, and emit events that JavaScript listens to, creating bidirectional data flow between the native and JS layers.

You need Swift or Objective-C for iOS, Kotlin or Java for Android, TypeScript for JS wrappers, and knowledge of module registration and linking on each platform. The module must expose methods callable from JavaScript and handle serialization of data across the bridge.

Native modules unlock high-performance functionality, access platform-specific APIs, and integrate existing native libraries that JavaScript alone cannot reach. They're essential for features requiring direct OS access, camera hardware, sensors, or computationally intensive operations.