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.
Design React hooks with performance and maintainability in mind by following these key principles:
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.
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
}
// Better approach
const handleSearchChange = useMemo(
() => debounce((value: string) => {
// Handle search
}),
[]
);
// Clean up on unmount
useEffect(() => {
return () => handleSearchChange.cancel();
}, []);
These patterns help avoid common pitfalls like unnecessary re-renders, stale closures, and complex dependency arrays while maintaining clean, performant React code.
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