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Comprehensive guide to using React 19's latest features with Clerk authentication. From automatic optimizations to new hooks and components, see how everything works together.
Automatic optimization that eliminates the need for manual memoization with useMemo, useCallback, and React.memo.
Built-in support for Server Actions, useActionState, and useFormStatus for seamless form handling and mutations.
Optimistically update the UI before the server confirms, providing instant feedback to users.
Read the value of promises and context in render, enabling new patterns for data fetching and state management.
Render <title>, <meta>, and <link> tags directly in components without external libraries.
Pass ref as a regular prop without forwardRef, simplifying component APIs.
Better error messages with component stacks and hydration mismatch details.
Improved Server Components with better streaming, async components, and performance.
Enhanced Suspense with better streaming, prerendering, and error handling.
Native support for the View Transitions API for smooth page and element transitions.
Hide background UI while preserving state and running cleanup when hidden.
Create stable event handlers that don't trigger effect re-runs, solving common Effect dependency issues.
This demo app uses all these features in production.