CoffeeScript, GitHub, and Travis CI

It’s quite simple to setup Travis CI to build your CoffeeScript game into Javascript binaries, despite Travis-CI not natively supporting CoffeeScript (see their language-setup pages).

Step 1: .travis.yml

Add this configuration file to your repository:

language: node_js
node_js:
  - 0.8
before_script:
  coffee --compile -o lib src
before_install:
  - npm install coffee-script

Explanation:

• You’re using node_js to build your CoffeeScript code. v0.8.
• before_install installs the CoffeeScript command line for you to use in your build.
• before_script builds the actual Javascript (into lib from src)

Step 2: package.json

You also need to add a separate dependency list in package.json, like so:

{
  "devDependencies": {
    "coffee-script": "latest"
  }
}

Step 3: Done

Configure your project as usual in Travis-CI, and you’re done.

I still haven’t figured out how to extract the built binaries, though. It would be nice to auto-publish them to a gh-pages branch on GitHub for a continuous, daily/nightly build of my CoffeeScript game.