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