Just came back to your “Build a PWA …” and have a problem with the browser. Never installed/used Chrome, I’m always on Firefox.
So is there also PWA dev support using FX and it’s DevTools box?
If yes, do you know a How-to page for it?
Sort of - Firefox supports debugging Service Worker code (https://hacks.mozilla.org/2016/03/debugging-service-workers-and-push-with-firefox-devtools/), but you don’t get much beyond that. With that said, you don’t need more PWA-specific functionality outside of the Service Worker debugging. The web application manifest visualizer is a nice-to-have, so you aren’t missing out by support for it not being there 