Nico Jansen

Hi, sorry it took me a while to get back to you. Indeed, I overlooked the `--parallel` at first. Good you've found it! 🎉 I'm pretty sure your test command...

The `node --test` test runner is using `node-tap` under the hood. We are working on a `@stryker-mutator/tap-runner` that supports this as well. One of the design goals of node-tap is...

Btw, node-tap support got released last week: https://stryker-mutator.io/blog/announcing-stryker-js-7/ 🎉

We cannot support the official Angular jest working until https://github.com/angular/angular-cli/issues/25434 is implemented. Angular jest users, please upvote that issue 💪

Thanks for opening this issue @ppratapa . What does your `karma.conf.js` file look like?

Hi again @magwas 👋 This is very strange. The `@stryker-mutator/jest-runner` plugin should automatically pick up the `jest` config from your `package.json` file. It logs it on `debug` level here: https://github.com/stryker-mutator/stryker-js/blob/16c1edc6de10973881fff082e18a21f5b1118a7f/packages/jest-runner/src/config-loaders/custom-jest-config-loader.ts#L44-L53...

Do you mean a multi-project setup? We have a documented known issue for that: https://stryker-mutator.io/docs/stryker-js/troubleshooting/#jest-crashes-with-a-multi-project-configuration Reading through the issue in jest, we should be able to make it work. Could...

@vinylhero could you maybe provide a minimal reproduction project?

Would something like #3229 work for you? I had to dig, because stalebot closed it for us, but it's still very much on my mind.

Hi @regseb 👋 I think `mock-fs` might not be compatible with our default way of sandboxing the files. Could you try again using [`--inPlace`](https://stryker-mutator.io/docs/stryker-js/configuration/#inplace-boolean) mode?