navigator.mediaDevices.enumerateDevices() will return an empty label

gistfile1.js

/**
navigator.mediaDevices.enumerateDevices() will return an empty label attribute value 
if the permission for accessing the mediadevice is not given. 
Try using it after getUserMedia.
**/

(async () => {   
  await navigator.mediaDevices.getUserMedia({audio: true, video: true});   
  let devices = await navigator.mediaDevices.enumerateDevices();   
  console.log(devices); 
})();