React Native Version 0.81 Release
Article Summary
React Native 0.81 just dropped with a game-changing performance boost: iOS builds up to 10x faster. But there's a catch that'll affect every Android developer.
The React Native team at Meta released version 0.81, bringing mandatory Android 16 edge-to-edge support and experimental precompiled iOS builds developed in collaboration with Expo. This release includes over 1,110 commits from 110 contributors and marks a significant shift in how the framework handles platform-specific UI constraints.
Key Takeaways
- Experimental precompiled iOS builds cut compile times by up to 10x
- Android 16 now mandatory with edge-to-edge display (no opt-out available)
- SafeAreaView officially deprecated, migrate to react-native-safe-area-context
- JavaScriptCore moved to community package (Hermes users unaffected)
- Requires Node.js 20+ and Xcode 16.1+ minimum
React Native 0.81 delivers dramatic iOS build speed improvements while forcing Android apps to adopt edge-to-edge layouts and deprecating legacy safe area handling.
About This Article
React Native library authors ran into compilation failures when their custom CMakeLists.txt files didn't include the RN_SERIALIZABLE_STATE macro. This macro is needed for New Architecture components that support serializable state.
Meta created the target_compile_reactnative_options CMake function. It automatically sets up the macro and all the required C++ flags, so library developers don't have to configure these manually.
Libraries that use codegen without custom CMake files work fine and don't need any changes. Libraries with custom CMake setups can now compile by calling a single CMake function in their build configuration.