REACT NATIVE RUNTIMES

Summary from the TLDR Dev newsletter

React Native Runtimes allows for executing components and functions across multiple JavaScript threads in React Native to prevent the main UI from lagging during heavy tasks. The platform uses two core libraries to manage runtime composition and maintain a synchronized, native-backed shared state across all environments. Performance is improved by offloading complex operations like chat screens, large lists, and background logic to dedicated secondary runtimes.