tsserver getSemanticDiagnostics always return global diagnostics with no associated locat

[neon igloo]

https://stackblitz.com/edit/vitejs-vite-ccwqlo?file=src%2Fexample.ts
Why do the diagnostic results from getSemanticDiagnostics not differentiate between files, is this a bug?
If it's not a bug, I would like to obtain diagnostics that do not include information about duplicate definitions. How should I proceed to use getSemanticDiagnostics properly?

[neon igloo]

!helpers

[sleek geyser]

im pretty sure its cached

like

you are logging index.ts twice

[neon igloo]

like this?

console.log(env.languageService.getSemanticDiagnostics('/index.ts'));
console.log(env.languageService.getSemanticDiagnostics('/index.ts'));

When I checked the console, I saw that this was not progressing

[sleek geyser]

im pretty sure its cached

[neon igloo]

Do you know how to avoid caching

[sleek geyser]

@neon igloo i think from that question you can look into docs

i woulnd't even pass in a file name