code: function moduleToCode(id, r) {
  		exports.module(id, options, done);
  		function done(err, result) {
  			if (err) {
  				next(err);
  				next = function(){}; // make sure you only call next(err) once
  				return;
  			}
  
  			if (result && (!modified || result.modified > modified)) {
  				modified = result.modified; // update latest last modified date
  			}
  
  			results[r] = result && result.code || '';
  			if (++doneCount >= ids.length) { alldone(); } // done with all of them
  
  		}
  	}
docs: convert a module