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javascript
2 years ago
475 B
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import { useEffect, useRef } from 'react';

export default function useInterval(callback, delay) {
  const savedCallback = useRef(null);

  useEffect(() => {
    savedCallback.current = callback;
  }, [callback]);

  useEffect(() => {
    function handleCallback() {
      savedCallback.current();
    }

    if (delay !== null) {
      const id = setInterval(handleCallback, delay);

      return () => {
        clearInterval(id);
      };
    }
  }, [callback, delay]);
}
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