That stack is based on xtool at its core (xtool.io). It's very cool, but still early for steady enterprise use IMO.

Also it doesn't have iOS Simulator, so automated testing is out of question. I doubt that porting the Simulator would be feasible, since it requires macOS kernel.

Well, maybe with XNU in a VM and reimplementing parts of macOS userland. Would love to see someone try.