React Native 0.78 introduces support for React 19, featuring new hooks like useOptimistic and useActionState, which streamline asynchronous operations and maintain UI responsiveness. The update also reintroduces console log streaming via Metro, supports Android XML drawables for better asset management, and improves app startup times by disabling bundle compression on Android. Additionally, the new React Compiler automatically optimizes performance by memoizing repetitive calculations. Support for Expo has been included via a canary version, with wider compatibility expected in 2025.
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