Thanks, this was helpful as someone who's interested in this set of tools but hasn't been following closely enough to understand how they all fit together (e.g. why there's both js_of_ocaml and Bucklescript, and how ReasonML fits into this).

For my own needs, it still seems unclear which way I should go though. The attractive thing about the tools to me is that you can write code that compiles to native and web, in a more or less MLish way (which I like). But it seems like either route works for that. I could just write OCaml, using the regular native toolchain for native compilation, and either Bucklescript or js_of_ocaml to compile to web. Or, I could use the ReasonML toolchain instead. If I'm not primarily a JS dev, is there a reason to pick one or the other? The syntax differences so far don't jump out at me as exciting enough to be decisive. I guess I could try a small side project in each and see how it goes.