JavaScript Twilio screensharing on localhost in firefox?

Currently screensharing on localhost in firefox throws the following error: The request is not allowed by the user agent or the platform in the current context..

Here's my code:

navigator.mediaDevices.getUserMedia({ video: { mediaSource: 'screen' } })
      .then((stream) => {
            console.log('stream', stream)
      })
      .catch((err) => {
            console.log('err', err)
      })
Answer:1

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Trying to migrate from react 15.6.1 to 16.0.0. I have updated my package.json, to "react": "16.0.0","react-dom": "16.0.0", (only things I changed so far), and from what I've understood from the ...

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