React Navigation is a comprehensive navigation library for React Native applications, providing stack, tab, drawer, and other navigators with deep linking support. The monorepo architecture consists of specialized packages (@react-navigation/core, @react-navigation/stack, etc.) that implement navigation primitives, state management, and UI components. Key entry points include package-specific index files and the example application demonstrating usage patterns. The library manages navigation state through React context and handles actions via reducers, with external dependencies on React Native, gesture handlers, and screens. It demonstrates strong engineering practices through TypeScript generics, custom hooks, platform abstraction, and comprehensive testing.
This is a mature, cross-platform React Native bottom sheet library (`@lodev09/react-native-true-sheet`) that provides native-feeling sheets on iOS (UISheetPresentationController), Android (BottomSheetBehavior + CoordinatorLayout), and Web (forked Vaul drawer). It is built exclusively for React Native's New Architecture (Fabric) with shared C++ shadow nodes for synchronous per-detent layout. The library offers an imperative API via refs and a global static method registry, plus optional integrations with React Navigation (custom stack router and sheet navigator), Expo Router (Sheet layout), and Reanimated (worklet-driven position tracking). Key features include automatic detent sizing, peek detents, header/footer overlays, keyboard avoidance, stacked sheets, dimming, and a portal-based overlay for toasts/dialogs. The codebase demonstrates high craftsmanship with clean native delegates, extensive event handling, and thorough test mocks. It is actively maintained with multiple example apps, CI/CD, Maestro E2E tests, and a documentation site.