React Native: What is the purpose of React Native's New Architecture?

New Architecture goals:

• Better performance
• Synchronous operations
• Type safety
• Lazy loading

Components:

1. JSI: JavaScript Interface

   • Replaces JSON bridge
   • Direct native calls

2. Fabric: New renderer

   • Synchronous layout
   • Concurrent rendering

3. TurboModules: Native modules

   • Lazy loading
   • Codegen types

4. Codegen: Type generation

   • C++ <-> JS type safety
   • Auto-generated interfaces

Migration:

• Gradual adoption supported
• Interop with old architecture
• Test with RCT_NEW_ARCH_ENABLED=1