What are the additional requirements? Afaik valid JS is valid TS.

Good summary. For some people iterating over existing code is preferred.

For others writing new code (and not maintaining it) feels better.

Yes, the web as it was before giant social media.

See also https://indieweb.org/

How is it? Anyone have tried it yet?

It’s much better than the alternative, which is the .prototype. system thing that I still don’t fully get.