import React, {useEffect, useState} from 'react'

export default function App({initialCount} : {initialCount: number}) {
 const [count, setCount] = useState<number>(initialCount)
 useEffect(() => {
  //print size
  const node = document.getElementById('root')
  console.log(node.offsetWidth)
 }, [])

 return (<div>
    <button onClick={() => setCount(v => ++v)}>
      Click Me({count})
    </button>
  </div>)
}