When not to use the useMemo React Hook

The article explores the useMemo Hook in React, highlighting its role as a performance optimization tool that helps memoize expensive computations to prevent unnecessary re-renders. However, it warns against the excessive use of useMemo in scenarios where operations are inexpensive, or when trying to maintain referential integrity without significant computational cost, as this can introduce unnecessary overhead. The text suggests that in cases where the reference to a non-expensive value needs to remain consistent across re-renders, the useRef Hook may be more appropriate. By offering code examples, it demonstrates how improper use of useMemo can lead to inefficiencies and suggests using profiling to evaluate its necessity. It also addresses the issue of suppressing ESLint warnings and cautions against doing so, recommending alternative approaches for maintaining code quality and performance.

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