Svelte 5: Component Imports in TS files not behaving correctly

[abdel-17]

Describe the bug

If you try to import a Svelte component with a snippet in a TS file, the type is not inferred correctly.

Reproduction

// foo.ts
import Foo from "./Foo.svelte";

<!-- Foo.svelte -->
{#snippet foo()}
{/snippet}

Expected behaviour

The import should have the correct type.

Screen_Recording_2024-02-21_at_3.43.46_AM.mov

System Info

• OS: MacOS 14.2.1
• IDE: VSCode

Which package is the issue about?

No response

Additional Information, eg. Screenshots

No response

[dummdidumm]

It happens because the TS plugin uses the Svelte version that comes bundled with the extension, which is 3.x - so the parser thinks this is an invalid tag. We need to adjust the TS plugin to search for the user's Svelte version on a best-effort basis, similar to how we do it in the language server already.