Jest leave open ports when last test are done.

[fabrizzioalco]

Im trying to resolve the issue where the test should run without the "--forceExit" argument.
However when i run the tests, and they're done. Jest don't exit because there're process running even when every test is complete.

I tried to run each one of the integration tests and all of them uses killApp() and stopApp() to close everything.
But when i run yarm testheadless or any command to test everything and are done, there are process still running.

I've seen that uses selenium webdriver and in the teardown i see that the server started at the start, it close mentioned server.
Can anyone help me understand what is going on?
I've tried debugging and see that killApp along with tree-kill are not doing the job, however running it in the normal way killApp workds