title: Save file in server - React.js
body: <p>I used <code>file-saver.saveAs(Blob,  filename)</code> to download a file to client's system, in React.js,</p>
  <p>I run the server, where the ip address is localhost:3000</p>
  <p>I have a doubt, Is it possible to save a file in public folder, when the client press the save button?</p>
  <p>Thanks</p>