CI4 as backend for React.js and authentication

This isn't easy by any stretch of the imagination, which is probably why I see a resurgence of the regular PHP stack for small to medium sized apps

JWT does have advantages over cookie based auth see here ->

https://stackoverflow.com/questions/5054...ie-for-spa

As I said, expect to be overwhelmed, this is the nature of Javascript front ends, unless you're building a JIRA clone, codeigniter with vuejs from a cdn is fine and dandy for my liking which is precisely why I dreamt up ignitedCMS, no dependencies, no composer, no abstract OOP data paradigms, everything you could need baked in one

Practical guide to IgnitedCMS - Book coming soon, www.ignitedcms.com