Describe the problem

We just upgraded the docs to use shiki-twoslash, which provides tooltips on js code blocks:

It would be cool if svelte blocks got the same treatment.

Describe the proposed solution

Honestly no idea, but @jasonlyu123 got a POC working previously: sveltejs/kit#3324 (comment)

Alternatives considered

No response

Importance

nice to have

Additional Information

No response