Are there any official recommendations on how to create progressive web apps (PWA) using Meteor?
No, there’s no “official” way of building PWAs with Meteor, because Meteor hasn’t yet implemented Service Worker support.
Unofficially, there are some boilerplates that claim to offer Meteor PWAs:
Hi Dan @dandv
Would this Google Chrome Labs library help?
Back in 2017 I’ve explained with demo repo how to use Service Workers and implement PWA — here.
Also you might be interested to read this thread.