Reviewing AI-generated React Hooks code
AI-generated React hooks often look standard but hide subtle issues like deceptive useEffect dependencies, unstable callbacks, redundant derived state, and missing cleanup logic. This guide provides a five-point smell-test checklist for code reviews before merging AI-assisted branches.
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ReactuseEffectuseCallbackuseMemouseStateAbortController
Added 2026-10-31 · originally published Fri, 30 Oct 2026 14:29:41 +0000
Key points
- Check whether useEffect dependencies are deceptive: avoid incorrect empty dependency arrays or object identity thrashing caused by parent re-renders.
- Watch out for ineffective stability from useCallback: prevent callback functions from depending on rapidly changing props, which breaks the dependency chain.
- Refuse to stuff derived state into useState: do not use useState + useEffect to sync other props or state; compute values directly or use useMemo.
- Ensure proper cleanup logic is present: async requests, timers, or listeners must be paired with matching cleanup functions or AbortControllers, avoiding happy-path-only code.
- Prevent over-abstraction into custom Hooks: do not create unnecessary hooks for simple three-line snippets; custom hooks should encapsulate complex, non-obvious contracts.
Pitfalls
- Omitting actually changing values from useEffect dependencies or causing infinite triggers via object references
- Nesting useCallback while depending on real-time changing variables, leading to ineffective stability
- Using useState and useEffect to synchronize derived state
- Making fetch requests without an AbortController or missing cleanup logic for async operations
- Blindly creating custom hooks for simple three-line boolean states
.cursorrules
- Review AI-generated useEffect dependencies to eliminate false dependencies and stale closures - Prohibit using the `useState` + `useEffect` combination to sync pure derived state - Ensure all async effects, timers, and event listeners include proper cleanup logic (such as AbortController) - Avoid meaningless premature abstraction (reject unnecessary micro custom hooks)
Copy-ready prompt
When writing or refactoring React code, strictly review the implementation of the hooks: 1. Check useEffect dependencies to ensure stable primitive values or explicit IDs are used, preventing stale closures or object identity thrashing. 2. Avoid blind usage of useCallback to prevent re-binding thrash caused by dependencies on frequently changing props. 3. Do not use useState + useEffect to sync derived state; calculate it directly during rendering. 4. All effects involving asynchronous requests, timers, or event listeners must provide complete cleanup logic or an AbortController. 5. Avoid over-abstracting simple three-line code blocks, [specify the component or Hook name to refactor].
#React#Hooks#Code Review#Pitfalls
Related techniques
Summarized by AI from the original source - refer to the original post for details. Copyright belongs to the original author.