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React Compiler Explained: Do We Still Need useMemo and useCallback?

React Compiler Explained: Do We Still Need useMemo and useCallback?

October 2026·10 min read·Updated October 2026

React Compiler is an official build-time optimization tool that automatically memoizes React components, values, and functions. Learn how it works, whether useMemo and useCallback are still necessary, how to configure it with Vite and Next.

  • React
  • React compiler
  • Performance
  • JavaScript
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