Starting to look better: https://medium.com/@kensoh/chromeless-chrominator-chromy-navalia-lambdium-ghostjs-autogcd-ef34bcd26907 & https://medium.com/powtoon-engineering/a-complete-guide-to-testing-javascript-in-2017-a217b4cd5a2a – both navalia & nightmare are mentioned with jest in blogs, and the nightmare has a fabulous looking set of capabilities and add-ons.
Will advise soonest…