Coverage doesn't report on .ts files

[adrienharnay]

🐛 Bug Report

When testing .ts files, they don't appear in the coverage report

To Reproduce

Create a .ts file, test it, run jest --coverage

Expected behavior

Would expect the TS files to be covered by jest --coverage

Link to repl or repo (highly encouraged)

https://github.com/adrienharnay/ts-jest-bug-repro (steps to reproduce in README)

Run npx envinfo --preset jest

Paste the results here:

System:
    OS: macOS High Sierra 10.13.6
    CPU: x64 Intel(R) Core(TM) i7-7567U CPU @ 3.50GHz
  Binaries:
    Node: 10.5.0 - /usr/local/bin/node
    Yarn: 1.7.0 - /usr/local/bin/yarn
    npm: 6.1.0 - /usr/local/bin/npm

Thanks a lot in advance!

[flaviusone]

It looks like if you downgrade ts-jest to v22 it works as expected so this might be a bug in ts-jest.

[adrienharnay]

I just tested, works well with ts-jest@22.4.6 but breaks with ts-jest@23.0.0. Looking at the changelog, 23.0.0 only upgraded jest to v23: https://github.com/kulshekhar/ts-jest/pull/600/files

So maybe this is still related to Jest? I will open an issue in ts-jest repo as well.

[adrienharnay]

Fixed with latest jest/ts-jest

[github-actions]

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