Exploring the impact of React Compiler on initial load and interaction performance. With numbers. Measured on a real app.

Nadia Makarevich

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React Compiler, a tool developed by the React core team, aims to improve app performance by handling memoization automatically. It can reduce the number of re-renders without the need for `useMemo` and `useCallback` hooks. This investigation measured its impact on both initial load performance and interaction performance, finding mostly positive results with minimal initial load impact and noticeable interaction improvements. It can’t catch all re-renders, but it could be 'good enough' for many apps. Advanced performance optimization may still require manual memoization.

How React Compiler Performs on Real Code

The problem of re-renders and memoization in React

Initial load performance and the React Compiler

Interactions performance and React Compiler

This tool is a game-changer, saving me a ton of time and sparing me the hassle of using useMemo and useCallback hooks everywhere.
If you get the chance, definitely give it a try, it’s worth it!

<a href="https://app.daily.dev/adevnadia" data-mention-id="oRkIBemvBMuNKb0hCPPAW" data-mention-username="adevnadia">@adevnadia</a> thanks for another great article!