Error while importing an enum

🐛 bug report

Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project
  adheres to.
• I have searched the issue tracker for an issue that matches the one I want
  to file, without success.

Description of the problem

I'm trying to reference a field of an object defined originally as a Typescript enum. The imported value is, however, undefined.

How has this issue affected you? What are you trying to accomplish?

The code fails to run just on Codesandbox. It does work well locally and on StackBlitz.

To Reproduce

See the linked sandbox.

The ActionTypes object is defined in types.ts and exported from index.ts.
When imported in the sandbox, the ActionTypes object is undefined. As mentioned above, this does work well when executed locally or on StackBlitz.

Additionally, the console shows: "Could not consume error: Error: Something is really wrong."

Link to sandbox: link

Your Environment

Open the linked CodeSandbox reproduction first and compare its behavior with the local and StackBlitz runs. Then inspect packages/mui-base/src/ListboxUnstyled/types.ts and index.ts, where ActionTypes is defined and exported; done means the imported ActionTypes is no longer undefined in CodeSandbox and the reported console error is resolved.