there are even some frameworks that make it extra easy, like angular for example (just `ng add @angular/pwa` and you're basically done). while it is pretty eas

there are even some frameworks that make it extra easy, like angular for example (just `ng add @angular/pwa` and you're basically done). while it is pretty easy and doable in maybe 1-2 days, depending on how fluent you are with these kinds of things... it's not entirely in the authors best interest. if people start using it `offline`, he wont be able to get advertisement revenue after all ;)