Expo Modules JSI

The JavaScript Interface (JSI) for Expo Modules in React Native, providing a native-to-JS bridge with synchronous calls and low overhead. Current stable version is 0.56.0.7. Released alongside Expo SDK updates, with a monthly cadence. Differentiator: enables high-performance native module communication without the asynchronous bridge overhead of the standard React Native bridge. Used internally by Expo modules that require direct synchronous access to native APIs.