A requireJS plugin to load CoffeeScript

coffee.js

(function() {
  var origDefine = define;

  function redefine(name, definitions) {
    return function (prereqs, definition) {
      if (arguments.length > 2) {
        throw new Error('Cannot have more than two arguments to define in ' + name);
      } else if (arguments.length === 1) {
        definition = prereqs;
        prereqs = [];
      }

      definitions.push({
        prereqs: prereqs,
        definition: definition
      });
    };
  }

  function moduleLoader(definition, isOnlyDefinition, isLastDefinition, onLoad) {
    return function () {
      var result = definition;
      if (typeof definition === 'function') {
        result = definition.apply(this, arguments);
      }

      if (isOnlyDefinition) {
        onLoad(result);
      } else if (isLastDefinition) {
        onLoad();
      }
    };
  }

  define(['coffee-script'], {
    load: function (name, req, onLoad, config) {
      req(['text!' + name + '.coffee'], function (text) {
          var definitions = [];
          var i, definition;
          define = redefine(name, definitions);

        try {
          var node = document.createElement('script');
          node.innerHTML = CoffeeScript.compile(text);
          document.getElementsByTagName('head')[0].appendChild(node);
        } finally {
          define = origDefine;
        }

        if (definitions.length === 0) {
          onLoad();
          return;
        }

        for (i = 0; i < definitions.length; i++) {
          definition = definitions[i];
          req(definition.prereqs, moduleLoader(
            definition.definition,
            definitions.length === 1,
            i === definitions.length - 1,
            onLoad)
          );
        }
      });
    }
  });
}());