bug: Broken exports for testing

[Tallyb]

Prerequisites

• [X] I have read the Contributing Guidelines.
• [X] I agree to follow the Code of Conduct.
• [X] I have searched for existing issues that already report this problem, without success.

Stencil Version

4.19.0

Current Behavior

Using in jest config file the following:

preset: @stencil/core/testing
transform: @stencil/core/testing/jest-preprocessor

Worked ok until 4.18.2 currently getting error:

  Preset @stencil/core/testing not found.

  Configuration Documentation:
  https://jestjs.io/docs/configuration

Expected Behavior

work as before quite likely as a result of this: https://github.com/ionic-team/stencil/commit/a2fa93b504d2ff2a3a3534ed5489af977552a273 Partial fix was only for mockDoc imports. https://github.com/ionic-team/stencil/issues/5860

System Info

node 20. 
npm 10.7

Steps to Reproduce

build a simple jest config with preset @stencil/core/testing Try to run jest.

Code Reproduction URL

n/a

Additional Information

No response

[christian-bromann]

@Tallyb thanks so much for reporting the bug and apologize for the regression. I have raised a PR with a bug fix. We were not aware that this was a use case for Stencil users. Moving on we have tests for this in place to ensure it won't break again.