Default export missing when using rollupTypes

[cdauth]

Describe the bug

Apologies if I'm misunderstanding something.

I'm trying to use rollupTypes: true to roll up my type declarations. However, the main export is missing from my bundle.

What seems to be happening is that the plugin generates an index.d.ts file that only contains an export * statement for my entry point, so it's not reexporting the default export. The reason seems to be here where it calls hasExportDefault. That checks whether the file contains a node of type SyntaxKind.ExportAssignment (277) or SyntaxKind.ExportDeclaration (278) with the export name default. This seems to work for a statement like export default test;, but my statement export default class Test { } has the node type SyntaxKind.ClassDeclaration (263).

As a workaround, I was able to declare as class Test { } and then exporting it in a separate statement as export default Test;.

Reproduction

https://stackblitz.com/edit/vitejs-vite-hspghz?file=vite.config.js

Steps to reproduce

Run npm run build and inspect the generated bundle in dist/test.d.mts.d.ts.

System Info

System:
    OS: Linux 6.8 Arch Linux
    CPU: (8) x64 Intel(R) Core(TM) i5-10310U CPU @ 1.70GHz
    Memory: 2.89 GB / 23.11 GB
    Container: Yes
    Shell: 5.2.26 - /bin/bash
  Binaries:
    Node: 21.7.2 - /usr/bin/node
    Yarn: 3.6.3 - /usr/bin/yarn
    npm: 10.5.2 - /usr/bin/npm
    pnpm: 8.15.2 - /usr/bin/pnpm
  Browsers:
    Brave Browser: 123.1.64.122
    Chromium: 124.0.6367.49

Validations

• Read the FAQ.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• The provided reproduction is a minimal reproducible example of the bug.