Types for MediaRecorder

[nVitius]

lib Update Request

I'm making this issue to track the request to add the types for the MediaStream Recording API into TypeScript.

Spec can be found here: #34728
MDN Docs here: https://developer.mozilla.org/en-US/docs/Web/API/MediaStream_Recording_API

There was an issue opened a few years ago about this, but was closed as "unactionable". It would be great to have these types available without needing to install a third-party lib as a dependency. Especially considering that this API is supported by all major browsers. Also, the interfaces for the MediaStream APIs, which this uses, already exist in TS.

I am creating a PR in the DOM-lib-generator and will update this issue.

[nVitius]

The previous issue I mentioned can be found here: #34728

[guiseek]

https://github.com/nVitius #34728 (comment)

[jakebailey]

This was fixed in #44684.