I was also confused when migrating from Sapper 0.27 to SvelteKit 1.0. The syntax changes were straightforward enough, but it left me with a project that didn't

I was also confused when migrating from Sapper 0.27 to SvelteKit 1.0. The syntax changes were straightforward enough, but it left me with a project that didn't compile. I started a new project and copied the source files there and it worked.