usePrevious.js 210 B

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  1. import { useEffect, useRef } from 'react';
  2. const usePrevious = value => {
  3. const ref = useRef(undefined);
  4. useEffect(() => {
  5. ref.current = value;
  6. });
  7. return ref.current;
  8. };
  9. export default usePrevious;