vscode does not recognize .svelte files imported in .ts files

[DetachHead]

Describe the bug

i'm not quite sure it's even supposed to be allowed, but i stumbled across a project that has lots of .ts files importing .svelte files that seem to work at runtime, but not in vscode.

i suspect it's because it's using the typescript language server instead of the svelte one?

Reproduction

<!-- +page.svelte -->
<script lang="ts">
    export const a = 1
</script>

import { a } from './+page.svelte'

Expected behaviour

no error

System Info

• OS: [e.g. Windows]
• IDE: [e.g. VSCode, Atom]

Which package is the issue about?

Svelte for VS Code extension

Additional Information, eg. Screenshots

[dummdidumm]

Did you enable the Svelte TypeScript plugin? The vs code setting is called svelte.enable-ts-plugin

[DetachHead]

yeah that's set to true

[ngmunyong]

I had the same issue until I realised I didn't add that vs code setting json in the project.

1. create .vscode folder at project root
2. add the line mentioned above

Hope this works for you.

[DetachHead]

still doesn't seem to work. also how come your .vscode folder is inside your .svelte-kit folder?

[hangilc]

I have encountered the same problem, and changing the TypeScript version through Cmd-Shift-P "TypeScript: Select TypeScript version..." to version 4.9.3 ('Use Workspace version' in my case) solved the problem. Before changing it has been set to 5.0.0-dev20221217 ('Use VS Code's Version').

[DetachHead]

@hangilc doesn't fix it for me

[jasonlyu123]

I can reproduce what @hangilc is seeing. One of the TypeScript APIs we used in the TypeScript plugin no longer works the same in ts 5.0. @DetachHead if you follow what @hangilc said, what's the version you're seeing in the "Use VS Code's Version" option? If it's not TypeScript 5.x. We'll need a reproduction repository. I can't reproduce it with your steps.

[DetachHead]

hmm, now i can't get it to happen anymore. i'll close this issue for now and will re-open and try to provide a repro repo if it happens again. thanks

[dummdidumm]

@jasonlyu123 would you open a PR to fix the plugin for upcoming TS 5.x? Is it possible to do this in a backwards-compatible way?

[DetachHead]

if it doesn't work in 5.x, i'll reopen this

[dummdidumm]

I assume this was fixed, therefore closing.