react-native-performance
Installation
SKILL.md
React Native Performance
Deep performance reference. Canonical home for React Native performance — covers FlatList tuning, memoization, Hermes, expo-image, FPS measurement, bundle treemap analysis, Hermes mmap, R8 Android, 16 KB page-size alignment, view flattening, native threading, JNI memory patterns, and the profiling toolchain.
For Fabric/JSI/TurboModules architectural overview, see
react-native-core/features-new-architecture.md.
Core References
| Topic | Description | Reference |
|---|---|---|
| FPS & re-renders | FPS measurement, profile-react, React Compiler (Expo SDK 54+), atomic state, Concurrent React, Reanimated worklets (v3/v4) | core-fps-rerenders |
| Bundle size | App size and JS bundle reduction — Ruler, Emerge, source-map-explorer, Expo Atlas, tree shaking, barrel exports, R8, asset catalog, Hermes mmap, code splitting | core-bundle-size |