airboardgame/src/components/hooks/usePrevious.jsx

import { useEffect, useRef } from "react";

const usePrevious = (value) => {
  // The ref object is a generic container whose current property is mutable ...
  // ... and can hold any value, similar to an instance property on a class

  const ref = useRef();
  // Store current value in ref

  useEffect(() => {
    ref.current = value;
  }, [value]); // Only re-run if value changes

  // Return previous value (happens before update in useEffect above)

  return ref.current;
};

export default usePrevious;