code: function () {
                  var comment;
  
                  if (input.charAt(i) !== '/') return;
  
                  if (input.charAt(i + 1) === '/') {
                      return new(tree.Comment)($(/^\/\/.*/), true);
                  } else if (comment = $(/^\/\*(?:[^*]|\*+[^\/*])*\*+\/\n?/)) {
                      return new(tree.Comment)(comment);
                  }
              }
docs: We create a Comment node for CSS comments `/* */`, but keep the LeSS comments `//` silent, by just skipping over them.