For others who are curious, this is about TypeScript support in Svelte - an issue created a year ago. The following comment by the author sounds hopeful, that

For others who are curious, this is about TypeScript support in Svelte - an issue created a year ago. The following comment by the author sounds hopeful, that they've been working in that direction, and eventually it will happen: https://github.com/sveltejs/svelte/issues/1639#issuecomment-442974572 https://github.com/sveltejs/svelte/issues/1639#issuecomment-...