reason : ocaml :: lfe : erlang might be an apter comparison. it adds a new syntax parser, but not a new language. from their docs: > The OCaml compiler is orga

reason : ocaml :: lfe : erlang might be an apter comparison. it adds a new syntax parser, but not a new language. from their docs: > The OCaml compiler is organized into several stages, which are exposed as libraries. Reason replaces part of the compiler toolchain with a completely new syntax parser that is more approachable, while still fully compatible with the rest of the compiler. Reason also implements a new source printer which integrates into your IDE and the new custom REPL.