sonar

src/module/cytoscapeMap.js

@@ -222,7 +222,7 @@ export default function cytoscapeMap(mapData, dataLayerType, dataLayerOption, cu
   // creat tippy.js
   let tip;
   cy.on('mouseover', 'node', function(event) {
-      var node = event.target
+      const node = event.target;
       let ref = node.popperRef()
       let dummyDomEle = document.createElement('div');
       let content = document.createElement('div');