asynchronous "rm -rf" for Node.js

gistfile1.js

  function rmrf(dir, callback) {
    fs.stat(dir, function(err, stats) {
      if (err) {
        return callback(err);
      }

      if (!stats.isDirectory()) {
        return fs.unlink(dir, callback);
      }

      var count = 0;
      fs.readdir(dir, function(err, files) {
        if (err) {
          return callback(err);
        }

        if (files.length < 1) {
          return fs.rmdir(dir, callback);
        }

        files.forEach(function(file) {
          var sub = path.join(dir, file);

          rmrf(sub, function(err) {
            if (err) {
              return callback(err);
            }

            if (++count == files.length) {
              fs.rmdir(dir, callback);
            }
          });
        });
      });
    });
  }

Does not work for me...