Binance Book

Personal Expo app for a Binance spot order book. Expo SDK 58, React Native 0.88, React 19.3.

Store builds of Expo Go do not include SDK 58 yet. Use a development build.

yarn start

Scan the QR code with Expo Go on Android, or press a if an emulator is running.

Libraries

• Reactive Data Client for the Binance REST snapshot (/api/v3/depth).
• @reactive/silk-native for UI. Silk is not on npm yet; packed tarballs live in vendor/. Refresh them from a sibling ../silk checkout with yarn vendor:silk.

End-to-end tests

yarn test and yarn web are the routine checks. Maestro (.maestro/book.yml) runs on demand against an Android APK when a native module, navigation, gesture, or React Native layout needs a device: eas workflow:run .eas/workflows/e2e-test-android.yml.