What Does React 19 Bring?
React 19 offers many innovations that improve performance and developer experience.
Key Features
React Compiler
No more need to manually use useMemo and useCallback hooks. React Compiler does automatic optimization.
Server Components
Server Components are now stable! Components that are rendered on the server and not sent to the client.
Actions
A new API for form operations. useFormState and useFormStatus hooks are used for easier form management.
use() Hook
New hook that allows you to use Promises directly in components.
Migration Guide
2. Keep Strict Mode active
3. Review concurrent features usage
4. Update your test suite
Conclusion
React 19 is an important step for the future of the framework. New features significantly improve developer experience.