Addressing code style issues

src/diagrams/class/classDb.js

@@ -196,7 +196,7 @@ const setClickFunc = function(_id, functionName, tooltip) {
     funs.push(function() {
       const elem = document.querySelector(`[id="${elemId}"]`);
       if (elem !== null) {
-        
+
         elem.addEventListener(
           'click',
           function() {

src/diagrams/class/classRenderer.js

@@ -11,7 +11,6 @@ parser.yy = classDb;
 const MERMAID_DOM_ID_PREFIX = 'classid-';
 let idCache = {};
 
-let classCnt = 0;
 const conf = {
   dividerMargin: 10,
   padding: 5,
@@ -433,8 +432,7 @@ const drawClass = function(elem, classDef) {
   });
 
   if (classDef.tooltip) {
-    const tooltip = title
-    .insert('title')
+    title.insert('title')
     .text(classDef.tooltip);
   }
 
@@ -445,7 +443,6 @@ const drawClass = function(elem, classDef) {
   classInfo.height = classBox.height + conf.padding + 0.5 * conf.dividerMargin;
 
   idCache[id] = classInfo;
-  classCnt++;
   return classInfo;
 };
 

src/utils.js

@@ -95,13 +95,12 @@ export const sanitize = (text, config) => {
 };
 
 export const formatUrl = (linkStr, config) => {
-  let url = linkStr;
+  let url = linkStr.trim();
 
-  if (config.securityLevel !== 'loose') {
-    return sanitizeUrl(url);
-  } else {
-    url = url.trim();
-    if (!!url) {
+  if (url) {
+    if (config.securityLevel !== 'loose') {
+      return sanitizeUrl(url);
+    } else {
       if (!/^(https?:)?\/\//i.test(url)) {
         url = 'http://' + url;
       }
@@ -109,7 +108,7 @@ export const formatUrl = (linkStr, config) => {
 
     return url;
   }
-}
+};
 
 const distance = (p1, p2) =>
   p1 && p2 ? Math.sqrt(Math.pow(p2.x - p1.x, 2) + Math.pow(p2.y - p1.y, 2)) : 0;