Meta has unveiled React Compiler, a React experimental project that helps optimize app performance by reducing the number of components to be re-rendered to the minimum possible. When a state change occurs.
The name React Compiler may seem confusing to some, as React is written in JavaScript, which is an interpreted language. However, React Compiler actually reads our code to automatically improve code performance, assisting in caching (memoization) tasks that programmers used to do manually, such as useMemo, useCallback, and React.memo.
Joe Savona, an engineer at Meta who developed this project, compares the functionality of React Compiler to TypeScript or JavaScript engines like V8 with similar compiler characteristics to further enhance code performance.
Meta has started using React Compiler in its own apps, such as the Instagram.com website and Meta Quest Store, resulting in code running twice as fast. The initial app call has also become 12% faster, which is considered highly beneficial for Meta’s user base.
The source code is open source on GitHub.
Source: React, The New Stack
TLDR: React Compiler from Meta optimizes app performance by minimizing component re-rendering and improving code speed, now being utilized in Meta-owned apps like Instagram.com with significant performance enhancements.
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