format with a cb

cb.js

var cb = log.format({
  message: 'this\nis\na\ntest\n',
  indent: 1,
  format: function(line, pad) {
    return util.format($.cyan('info') + $.gray(' %s') + '%s', pad, line) + (Array(20 - line.length).join('~'));
  }
});
console.log(cb);