ReasonML

ReasonML is a syntax and toolchain powered by OCaml's type system that compiles to JavaScript or native binaries.

Installation

ReasonML can be installed via npm or using OPAM (OCaml Package Manager):

apt update
apt install -y nodejs npm opam

# Install Reason CLI tools via npm
npm install -g reason-cli

# Or via OPAM
opam init -a
opam install -y reason

Verification

Check that the Reason formatter and parser tool refmt is available:

refmt --version

Compilation & Execution

Create a hello.re file:

let () = print_endline("Hello, ReasonML in TIDE!");

Format and compile using refmt and ocamlopt:

refmt hello.re
ocamlopt -pp "refmt --print binary" -impl hello.re -o hello
./hello

Official Resources

• Official Website