Rollup incorrectly merging ESM and CJS modules resulting in missing exports

[n8sabes]

Rollup Version

4.12.0

Operating System (or Browser)

macOS 14.3.1 23D60 arm64

Node Version (if applicable)

v20.11.1

Link To Reproduction

https://github.com/n8sabes/rollup-bug

Expected Behaviour

Correctly exporting both ESM and CJS modules.

Actual Behaviour

The symbol s_ITZElfFEBMI isn't exported correctly as it is wrapped inside of an ESM module proxy, and that proxy is exported instead. The correct export would look like, export {WebPlugin, s_ITZElfFEBMI}.

This happens only when those two modules end up together in the same chunk.

https://github.com/n8sabes/rollup-bug/blob/dd50ea990de6491592a2dead4f6694304aedeaa3/dist/assets/s_itzelffebmi-BBbRbRI_.js#L506C1-L511C19

const s_ITZElfFEBMI = async () => {
  const coordinates = await Geolocation.getCurrentPosition();
  console.log("Current position:", coordinates);
};
const s_itzelffebmi = /* @__PURE__ */ Object.freeze(/* @__PURE__ */ Object.defineProperty({
  __proto__: null,
  s_ITZElfFEBMI
}, Symbol.toStringTag, { value: "Module" }));
export {
  WebPlugin as W,
  s_itzelffebmi as s
};
};