Frontend: React 19

React 19 eliminates manual hook orchestration with the React Compiler and introduces native support for Actions and Document Metadata.

React 19 marks a shift toward zero-config performance. The new React Compiler automates memoization (replacing useMemo and useCallback), while the Actions API simplifies asynchronous state transitions and form handling. Developers gain direct control over Document Metadata (title, meta tags) and Stylesheets through built-in component support. With the stable release of Server Components and the use API for resource loading, React 19 reduces boilerplate and optimizes the hydration process for modern web applications.

https://react.dev/blog/2024/12/05/react-19