isn't that fairly irrelevant if Deno dies out? Does anything else use JSR?

I tried using JSR for about a week, but the restrictions were so tight I gave up.

It’s immutable npm, you can’t unpublish I believe but yeah it’s trick of allowing one to publish typescript packages rather than compiled js only applies to deno.

JSR packages can run on Node.js, Bun, Cloudflare Workers, etc. The maintainer uploading the package decides which runtimes are supported.

Ah, fair enough, makes the whole situation a bit more lame