Usage seems to us peculiarly a matter of ear. Everyone has his own set of rules, his own list of horribles.

Point being (again), definitions seem to differ, and what you call "full stack" is what I call "batteries-included framework". Full stack simply means (for me) that it gives you a way of building frontend and backend code, but implies nothing about what functionality is included in either part.

You particular circumstances may or may not warrant a way different from what lhunath (and other users) deem "best practices".

Remember that in the end, especially in scripting, there always are more than one way to skin a cat, but some ways are more portable, more reliable, make it simpler to handle error cases, parse the output, etc.

It would help greatly if you provided references for "articles online about what universal javascript is". But I think this is just too dependent on opinion.

We won’t go into all the details that make an application a PWA, because it all sort of depends on who you ask.