React hook to get the reactive window size

useWindowSize.js

import { useState, useEffect } from 'react'

function useWindowSize() {
  const [windowSize, setWindowSize] = useState({
    width: null,
    height: null,
  })

  useEffect(() => {
    const updateSize = () => {
      setWindowSize({
        width: window.innerWidth,
        height: window.innerHeight,
      })
    }

    window.addEventListener("resize", updateSize)
    updateSize()

    return () => window.removeEventListener("resize", updateSize)
  }, [])

  return windowSize
}

export default useWindowSize