It's solid once you get everything set up, but that takes me a while. Of course I've only set it up for a couple of projects, using different build systems, and having tried other test libraries in between in order to minimize the chances of my remembering anything...
I think there's room for one or two test frameworks that Just Work. Surely you'll lose some configurability, but mostly you don't need it.
I have used Jasmine+Karma. It's good stuff. It doesn't have the the "awesome stuff baked in" feel that Jest gives but it also doesn't give you a headache when something baked in doesn't work as expected :).
I think there's room for one or two test frameworks that Just Work. Surely you'll lose some configurability, but mostly you don't need it.