jest-worker and typescript unexpected behavior

🐛 Bug Report

Jest tests fail with this error:

Call retries were exceeded

      at ChildProcessWorker.initialize (node_modules/jest-worker/build/workers/ChildProcessWorker.js:193:21)

...

Jest did not exit one second after the test run has completed.

This usually means that there are asynchronous operations that weren't stopped in your tests. Consider running Jest with `--detectOpenHandles` to troubleshoot this issue.

To Reproduce

Using jest and @babel/preset-typescript, and jest-worker, create a test which creates a new jest-worker which invokes a typescript definition.

Expected behavior

The typescript worker is run without error and the result returned to the test

Link to repl or repo (highly encouraged)

Repro is here: https://github.com/tedconn/worker-jest-ts

I was actually trying to repro a different issue but when trying to come up with a repro I would have expected this simple case to work!

envinfo

System:
    OS: macOS 10.14.6
    CPU: (12) x64 Intel(R) Core(TM) i7-8850H CPU @ 2.60GHz
  Binaries:
    Node: 12.9.0 - ~/.nvm/versions/node/v12.9.0/bin/node
    Yarn: 1.13.0 - /usr/local/bin/yarn
    npm: 6.10.2 - ~/.nvm/versions/node/v12.9.0/bin/npm
  npmPackages:
    jest: ^24.9.0 => 24.9.0 

[SimenB]

Could you add a readme to the reproduction with which commands to run in order to reproduce the bug, and describe what behaviour you expected?

[tedconn]

Thanks for the follow up.

I can contribute that.