Modified builder-coffee which takes .coffee files directly from teh "scripts" directive of a component.json file.

index.coffee

fs           = require( 'fs' )
CoffeeScript = require( 'coffee-script' )

module.exports = ( builder )->

  builder.hook 'before scripts', ( pkg )->

    if scripts = pkg.conf.scripts
      ret_scripts = []
      scripts.forEach (file) ->
        name = file.match /^(.+)\.coffee$/i
        if name
          source = fs.readFileSync file, 'utf8'
          compiled = CoffeeScript.compile source, bare: yes
          file = name[1] + '.js'

          fs.writeFileSync file, compiled, 'utf-8'
        
        ret_scripts.push file

    pkg.conf.scripts = ret_scripts
    return pkg

index.js

// Generated by CoffeeScript 1.5.0
(function() {
  var CoffeeScript, fs;

  fs = require('fs');

  CoffeeScript = require('coffee-script');

  module.exports = function(builder) {
    return builder.hook('before scripts', function(pkg) {
      var ret_scripts, scripts;
      if (scripts = pkg.conf.scripts) {
        ret_scripts = [];
        scripts.forEach(function(file) {
          var compiled, name, source;
          name = file.match(/^(.+)\.coffee$/i);
          if (name) {
            source = fs.readFileSync(file, 'utf8');
            compiled = CoffeeScript.compile(source, {
              bare: true
            });
            file = name[1] + '.js';
            fs.writeFileSync(file, compiled, 'utf-8');
          }
          return ret_scripts.push(file);
        });
      }
      pkg.conf.scripts = ret_scripts;
      return pkg;
    });
  };

}).call(this);