kmagiera/react-native-reanimated
React Native Reanimated
This project is a cross-platform mobile animation library and UI thread animation engine designed to create high-performance animations by running JavaScript logic directly on the UI thread. It functions as a multi-threaded JavaScript runtime that allows code to execute across multiple threads to improve concurrency and prevent frame drops.
The library focuses on enabling fluid user interface interactions and high-frame-rate transitions that remain stable regardless of the main processing load. It provides a system for offloading animation logic from the main thread to ensure smooth motion and prevent visual stutters during user interactions.
The implementation covers multi-threaded JavaScript execution and a specialized animation engine for React Native UI development.
Features
- Native Thread Animation Engines - Provides a native-thread animation engine that processes frames independently of the JavaScript thread to maintain sixty FPS.
- Worklet Execution Environments - Executes small JavaScript functions called worklets directly on the UI thread to eliminate bridge overhead.
- Framework-Native Bridges - Implements a high-speed synchronous bridge to bypass asynchronous communication when updating the native layer.
- Multi-threaded Execution - Enables the execution of JavaScript code across multiple threads to improve concurrency and performance.
- Native Bindings - Provides high-performance native bindings via JSI to allow direct C++ function calls from JavaScript.
- JavaScript Runtimes - Functions as a multi-threaded JavaScript runtime environment to improve application concurrency.
- Mobile UI Frame Rate Optimization - Optimizes mobile animations to maintain a stable, high frame rate regardless of JavaScript thread load.
- Reactive Shared Values - Ships a shared-value system for synchronized, reactive state management between the JS and UI threads.
- Mobile Animation Libraries - Serves as a cross-platform mobile animation library that runs logic on the UI thread for high performance.
- Worklet Compilers - Implements a build-time process that transforms JavaScript functions into specialized worklets for native runtime execution.
- React Native UI Libraries - Provides high-performance animation primitives specifically designed for the React Native ecosystem.
- Interaction Smoothing - Ensures fluid, stutter-free animations by running interaction logic on the native UI thread.
- Interactive Interface Animations - Provides the foundation for animations that respond instantly to user gestures without visual stuttering.
- Animation - Reimplemented animation library for native performance.
