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Optimize React hook patterns

getsentry/sentry
Based on 4 comments
TSX

Design React hooks with performance and maintainability in mind by following these key principles: 1. Minimize useEffect usage - Update values directly when possible instead of using effects. Effects should only be used for true side effects, not for derived state updates.

React TSX

Reviewer Prompt

Design React hooks with performance and maintainability in mind by following these key principles:

  1. Minimize useEffect usage - Update values directly when possible instead of using effects. Effects should only be used for true side effects, not for derived state updates.

  2. Use the latest ref pattern for hook options to avoid unnecessary re-renders and ensure proper memoization:

function useCustomHook(options: Options) {
  const optionsRef = useRef(options);
  useLayoutEffect(() => {
    optionsRef.current = options;
  });
  
  // Access latest options in callbacks
  const handleChange = useCallback(() => {
    const currentOptions = optionsRef.current;
    // ... use currentOptions
  }, []); // No options dependency needed
}
  1. Prefer useMemo for complex operations over useCallback when dealing with dependencies:
// Better approach
const handleSearchChange = useMemo(
  () => debounce((value: string) => {
    // Handle search
  }), 
  []
);

// Clean up on unmount
useEffect(() => {
  return () => handleSearchChange.cancel();
}, []);
  1. Consider state management alternatives before reaching for useEffect - often state updates can be handled directly in event handlers or through proper component composition.

These patterns help avoid common pitfalls like unnecessary re-renders, stale closures, and complex dependency arrays while maintaining clean, performant React code.

4
Comments Analyzed
TSX
Primary Language
React
Category

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