Maybe off-topic but the website is noticeably faster than the Svelte guide (https://svelte.technology/). Is it built on Sapper itself? Or is it just a static site?
Both sites are written in Sapper. The difference is that the Sapper site can take advantage of Sapper's `export` feature, which generates a static site from your codebase, Gatsby-style (except with much less JS). That's probably why it's faster for you (though there'd be less of a difference if I was better at devops)