Can't parse JS modules exported from index files in TS project

[bromanazzi]

Steps to reproduce

https://codesandbox.io/p/github/bromanazzi/pigment-test/main

1. Open the preview

Current behavior

Shows the error Unexpected token, expected: ","

However, if you go to App.tsx and change the Button import to the component file (./Button/Button) it works normally.

Expected behavior

It should render the button normally

Context

We're trying to add pigment to a large project with both js and ts. On starting our server with the pigment plugin active, vite throws this kind of error for hundreds of .jsx files.
It seems like it's trying to parse the files as ts. On empty fragments <> for example, it says that Type parameter list cannot be empty.

Your environment

npx @mui/envinfo

  Don't forget to mention which browser you used.
  Output from `npx @mui/envinfo` goes here.

Search keywords: typescript modules export transform parse