learn-elm Elm vs React/Redux?

Elm

Pros There are lots of very positive blog posts about Elm e.g. here

Beginner friendly
Quicker debugging due to very clear error messages e.g.
No null or undefined
Total immutability -> makes it easier to keep track of state
Purely functional -> code can be more easily refactored
No runtime exceptions
Reactive

In this blog post, the author explains

The strictness of the type system eliminates an enormous amount — if not the vast majority of — mundane errors. Furthermore, refactoring is incredibly nice. Daniel Bachler had a relatable talk in BerlinJS not long ago: Fearless refactoring with Elm. The refactoring experience most of the time is: Make changes, any changes. The compiler tells what you missed. Go to 1. When the code compiles, it will work. There will not be any crashes. The only things that can go wrong are application logic. Application logic is what we should be focused on at all times, but many languages don’t let us do that. And since Elm enforces immutability and functional style, it is in fact very hard to cause regressions that you don’t know about. I find that when coding Elm, I get to spend most of my time thinking about the actual problem that I am solving. Whereas when coding JavaScript, I spend my time debugging and only every once in a while get to think about the actual problem.

Cons