code: function(name, nodes) {
            if (name !== 'declaration') {
              return false;
            }
  
            if (
                nodes.content[0] &&
                nodes.content[0].content &&
                nodes.content[0].content[0] &&
                nodes.content[0].content[0].type &&
                nodes.content[0].content[0].type === 'variable'
              ) {
              return true;
            }
  
          }
docs: Visitor for SASS, SCSS and plain CSS syntaxes