mxthevs / melange-opam-template

melange-opam-template

A simple project template using Melange with opam.

If you are looking for a template with esy, check melange-esy-template.

Quick Start

make init

# In separate terminals:
make watch
make serve

When running make init, you may encounter an error like this:

[ERROR] Could not determine which packages to install for this switch:
  * Missing dependency:
    - melange >= 1.0.0
    no matching version

To address this, first run opam update, then rerun make init.

React

React support is provided by reason-react. The entry point of the sample React app is src/ReactApp.re.

Commands

You can see all available commands by running make help or just make. Here are a few of the most useful ones:

• make init: set up opam local switch and download OCaml, Melange and JavaScript dependencies
• make install: install OCaml, Melange and JavaScript dependencies
• make watch: watch for the filesystem and have Melange rebuild on every change
• make serve: serve the application with a local HTTP server

JavaScript output

Since Melange just compiles source files into JavaScript files, it can be used for projects on any JavaScript platform - not just the browser.