[arxpoetica]

I think you should consider disassociating the TypeScript requirement in the compiler. You'll alienate developers (like me) who prefer Vanilla™ JavaScript. It's one of the things I love about Svelte (which you claim heritage to), in that they really try to conform to vanilla everything, i.e., HTML, CSS, JS.

Everything else sounds terrific, though, especially the ability to do SSR.

[tobr]

It isn't really true that Svelte is just "vanilla" Javascript. For example, the compiler looks at the argument names of your computed properties to determine which data they depend on, which breaks with the semantics of Javascript. This means that Svelte only allows you to use function literals for computed properties.