VIP20/15_React/day-4/code/my-app/src/hooks/useStrorage.js

import { useState } from 'react';

function useStorage(key) {
  let [value, setValue] = useState(() => localStorage.getItem(key));

  function setStorage(newValue) {
    localStorage.setItem(key, newValue);
    setValue(newValue);
  }
  return [value, setStorage];
}

export default useStorage;