coverage is not writing files

[sbonasu]

Hi, We have version 1.0.3 in big monorepo and its working fine. Our setup is simple, we have this package as devDep in some packages that opted for code coverage along with config/coverage.js.

When we update the version to 2.0.0 or even latest without any other changes, code coverage is not writing coverage files. There are no errors as well. I used javascript debugger to trace the calls and its hitting https://github.com/ember-cli-code-coverage/ember-cli-code-coverage/blob/master/packages/ember-cli-code-coverage/lib/attach-middleware.js#L254 and after tests are finished its not hitting https://github.com/ember-cli-code-coverage/ember-cli-code-coverage/blob/master/packages/ember-cli-code-coverage/lib/attach-middleware.js#L229

I'm not sure how to troubleshoot further. Can someone please help