code: function(source, options) {
      try {
        return prettify(source, options);
      } catch (e) {
        console.error(e);
        console.warn('HTML beautification failed.');
      }
    }
docs: Format HTML with js-beautify, pass in options.
  @param   {String} source  [The un-prettified HTML.]
  @param   {Object} options [Object of options passed to js-beautify.]
  @returns {String}         [Stunning HTML.]