code: function node(n) {
          if (!LiveDevelopment.config.experimental) {
              return;
          }
  
          if (!Inspector.config.highlight) {
              return;
          }
  
          // go to the parent of a text node
          if (n && n.type === 3) {
              n = n.parent;
          }
  
          // node cannot be highlighted
          if (!n || !n.nodeId || n.type !== 1) {
              return hide();
          }
  
          // node is already highlighted
          if (_highlight.type === "node" && _highlight.ref === n.nodeId) {
              return;
          }
  
          // highlight the node
          _highlight = {type: "node", ref: n.nodeId};
          Inspector.DOM.highlightNode(n.nodeId, Inspector.config.highlightConfig);
      }
docs: Highlight a single node using DOM.highlightNode
  @param {DOMNode} node