[xfer]

There is no hot reloading in the toolchain, but the compiler is very fast. I am not sure what you mean by xcode plugin, this is a js application, Reason is syntax for ocaml using bucklescript backend.

[thangngoc89]

This is both a native (as in binary) and js application. It compiles down to binary and uses OpenGL for native targets and WebGL for the web

[michaelsbradley]

Reason code can indeed be compiled to JavaScript using the Bucklescript backend (as can regular OCaml), but it can also be compiled to native since it's just a dialect of OCaml. In the latter case, the programmer would need to avoid JS interop or employ conditional compilation.