Screensharing with audio from Mic

app.js

const publish = Promise.all([
  OT.getUserMedia({
    videoSource: 'screen'
  }),
  OT.getUserMedia({
    videoSource: null
  })
])
.then(([screenStream, micStream]) => {
  return OT.initPublisher(null, {
    videoSource: screenStream.getVideoTracks()[0],
    audioSource: micStream.getAudioTracks()[0]
  });
});