[jnbiche]

Please read my comment again, I said "many if not most" of the benefits. And I was referring specifically to the tire system, not the language as a whole.

Listen, I love pure functional languages, but the step up from JavaScript to flow in program correctness is greater than the step up from flow to elm (in my opinion). Flow even has sum types.

Have you actually tried flow?

[simplify]

I've tried to use flow three times now, but the tooling just isn't there yet. It might be better now, but Facebook doesn't seem to invest heavily in developer UX.

[jnbiche]

What problem did you have?? I've been using Flow.js for work for several years now, to great success. I feel very uncomfortable now writing plain JS.

[simplify]

For some reason I could never get flow's in-editor errors and type information to work. Personally I use TypeScript. Their sublime support is nice and fast.