title: react typescript image resizing and download
body: <p>I was implement image resize and image download.
  But I see an error in 73line..</p>
  <p><a href="https://codesandbox.io/s/serene-monad-sc6imu?file=/src/App.tsx" rel="nofollow noreferrer">https://codesandbox.io/s/serene-monad-sc6imu?file=/src/App.tsx</a></p>
  <p>I see an reference, but I can't solve the problem...</p>