ReasonML has two compilers -- a compiler that goes to JavaScript, and a compiler that goes to native code (the OCaml compiler, since Reason and OCaml share an A

ReasonML has two compilers -- a compiler that goes to JavaScript, and a compiler that goes to native code (the OCaml compiler, since Reason and OCaml share an AST/etc.) So if you want to use ReasonML with a web server, you have two options: 1) A native web server, or 2) NodeJS. Because Reason can compile to JS, you can use with Node just like any other compiles-to-JS language. The claim here (which I have no opinion on either way) is that using a particular native OCaml web server with ReasonML is faster than compiling ReasonML to JS and using it with Node.