Yep! As I said, not quite a 1.0 release but a bunch of people are using it in production. And yeah, I think if you want to use SvelteKit the endpoints need to

Yep! As I said, not quite a 1.0 release but a bunch of people are using it in production. And yeah, I think if you want to use SvelteKit the endpoints need to be in something that compiles to JS — not 100% sure. But it's quite possible to hook Svelte itself into any stack you want. SvelteKit is the bundling up of a bunch of nice defaults whereas Svelte is completely stack agnostic.