importing from the runtime

I see this in the

template-svelte-esm

template-svelte-esm

example:

  import { ApplicationShell }   from '#runtime/svelte/component/core';

  import { ApplicationShell }   from '#runtime/svelte/component/core';

I'm not familiar with this syntax – i.e. the

here in the path. What does it mean and what enables it? I looked in

vite.config.js

vite.config.js

and the

symbol doesn't appear in that file. I also couldn't find anything about that being standard sugar for ESM6 syntax.