React Native Multithreading with Worklets

Software Mansion's production multithreading patterns for React Native using react-native-worklets.

React Native Worklets lets you run JavaScript code in parallel across multiple threads and runtimes. It powers Reanimated, Gesture Handler, and Skia under the hood.

Version Check

Before answering any multithreading question, check that react-native-worklets is up to date:

1. Read the user's package.json to find the installed react-native-worklets version.
2. Run npm view react-native-worklets version to get the latest published version.
3. If the installed version is older than the latest, inform the user and recommend upgrading before proceeding with implementation advice.

Runtime Model

React Native apps have three kinds of runtimes. Picking the right target is the first decision: