Allow writing TypeScript in Script tags with @ts-check

[ivanjeremic]

Be able to write TypeScript in Script Tags inside .html files. (I'm not asking for compilation support for .html files only allow the usage and check of TS inside .html files Script Tag)

When we do this: we get the error Type annotations can only be used in TypeScript files. when hovering over the Type.

<script>
  let foo: number = 0;
  foo = "hello";
</script>

//@ts-check works and gives me checks and squiggly lines but still gets not rid of the error above.
A Solution would be if this would work.

<script>
 //@ts-check 
  import { mod } from "./this/should/give/autocomplete"
  let foo: number = 0;
  foo = "hello";

  mod();
</script>

The ideal would be if //@ts-check allows the use of TypeScript inside Script Tags.

[Heath123]

I’d like this too, with a way to specify a tsconfig.json

[Heath123]

If you go to this function
https://github.com/microsoft/vscode/blob/ce00cd7812aa1c8fa63cf5630f28fd3f9197fdc6/extensions/html-language-features/server/src/modes/javascriptMode.ts#L29-L34
and add
return ts.ScriptKind.TS;
at the start of the function then it works but it also causes errors because it checks things you might not want checked as well

[qrhfz]

usually //@ts-check is used with jsdoc for type annotation instead of typescript syntax