meteor/packages/coffeescript/package.js

Package.describe({
  summary: "Javascript dialect with fewer braces and semicolons"
});

var coffee = require('coffee-script');
var fs = require('fs');

Package.register_extension(
  "coffee", function (bundle, source_path, serve_path, where) {
    serve_path = serve_path + '.js';

    var contents = fs.readFileSync(source_path);
    var options = {bare: true, filename: source_path};
    try {
      contents = coffee.compile(contents.toString('utf8'), options);
    } catch (e) {
      return bundle.error(e.message);
    }

    contents = new Buffer(contents);
    bundle.add_resource({
      type: "js",
      path: serve_path,
      data: contents,
      where: where
    });
  }
);

Package.on_test(function (api) {
  api.add_files(['coffeescript_tests.coffee', 'coffeescript_tests.js'],
                ['client', 'server']);
});