Local SoundCloud Downloader - TypeError: s.WritableStream is not a constructor

[infeeeee]

Hello, thank you for your scripts!

Local SoundCloud Downloader is not working on Firefox 72, Tampermonkey v4.10.

The script loads correctly, but following error shows up in developer console if I click on the download button:

TypeError: s.WritableStream is not a constructor

Than nothing happens

[maple3142]

Because it uses features that Firefox doesn't support