I'm using react and like its functional approaches. I started implementing libraries such as immutablejs, recompose and ramda. I also make use of pure functional components exclusively. Then I had a look at Elm and I realized that, with all the libraries I have put together, I created my own crippled frankenstein'ish version of Elm. I think I really should give Elm a try!
Agree that Elm is a good all-in-one solution for SPAs.
You should also give ClojureScript with the simple React-wrapper Reagent a spin. All the functional stuff is built into the language, like Elm, albeit without the types, which both has its pros and cons.
