Hem + Less Bug

gistfile1.js

var hem  = new (require('hem'));
var less = require('less');
var fs   = require('fs');
var argv = process.argv.slice(2);

hem.compilers.less = function(path) {
  var content, result;
  content = fs.readFileSync(path, 'utf8');
  result = '';
	less.render(content, function(err, css) {
		if (err) { throw err; }
		result = css;
		console.log("Bar");
	});
	console.log("Foo");
  return result;
};

require.extensions['.less'] = function(module, filename) {
  var source;
  source = JSON.stringify(hem.compilers.less(filename));
  return module._compile("module.exports = " + source, filename);
};

hem.exec(argv[0]);

// outputs Foo Bar