fix: Fix eslint warnings

.eslintrc.json

@@ -52,24 +52,25 @@
   },
   "overrides": [
     {
-      "files": "./**/*.html",
+      "files": ["cypress/**", "demos/**"],
-      "rules": {
-        "no-undef": "off",
-        "jsdoc/require-jsdoc": "off"
-      }
-    },
-    {
-      "files": ["./cypress/**", "./demos/**"],
       "rules": {
         "no-console": "off"
       }
     },
     {
-      "files": ["./**/*.spec.{ts,js}", "./cypress/**", "./demos/**", "./**/docs/**"],
+      "files": ["*.spec.{ts,js}", "cypress/**", "demos/**", "**/docs/**"],
       "rules": {
         "jsdoc/require-jsdoc": "off",
         "@typescript-eslint/no-unused-vars": "off"
       }
+    },
+    {
+      "files": ["*.html", "*.md", "**/*.md/*"],
+      "rules": {
+        "no-var": "error",
+        "no-undef": "off",
+        "@typescript-eslint/no-unused-vars": "off"
+      }
     }
   ]
 }

__mocks__/dagre-d3.ts

@@ -1,3 +1 @@
-import { vi } from 'vitest';
+// DO NOT delete this file. It is used by vitest to mock the dagre-d3 module.
-
-// export const render = vi.fn();

cypress/platform/xss10.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = 'classDiagram\n';
+      let diagram = 'classDiagram\n';
       diagram += 'class Square~<img/src';
       diagram += "='1'/onerror=xssAttack()>~{\n";
       diagram += 'id A\n';

cypress/platform/xss11.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = 'stateDiagram-v2\n';
+      let diagram = 'stateDiagram-v2\n';
       diagram += 's2 : This is a state description<img/src';
       diagram += "='1'/onerror=xssAttack()>";
 

cypress/platform/xss12.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = 'stateDiagram-v2\n';
+      let diagram = 'stateDiagram-v2\n';
       diagram += 's2 : A<img/src';
       diagram += "='1'/onerror=xssAttack()>";
 

cypress/platform/xss13.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = 'stateDiagram-v2\n';
+      let diagram = 'stateDiagram-v2\n';
       diagram += 'if_state --> False: if n < 0<img/src';
       diagram += "='1'/onerror=xssAttack()>";
 

cypress/platform/xss14.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = 'classDiagram\n';
+      let diagram = 'classDiagram\n';
       diagram += 'classA <-- classB : <ifr';
       diagram += "ame/srcdoc='<scr";
       diagram += 'ipt>parent.xssAttack(`XSS`)</';

cypress/platform/xss15.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = `sequenceDiagram
+      let diagram = `sequenceDiagram
     participant John
     links John: {"XSS": "javas`;
       diagram += `cript:alert('AudioParam')"}`;

cypress/platform/xss16.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = `sequenceDiagram
+      let diagram = `sequenceDiagram
     participant Alice
     links Alice: { "Click me!" : "javasjavascript:cript:alert('goose')" }`;
 

cypress/platform/xss17.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = `sequenceDiagram
+      let diagram = `sequenceDiagram
     participant Alice
     link Alice: Click Me!@javasjavascript:cript:alert("goose")`;
 

cypress/platform/xss18.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = `classDiagram
+      let diagram = `classDiagram
       Class "<img/src='x'/onerror=xssAttack(1)>" <--> "<img/src='x'/onerror=xssAttack(2)>" C2: Cool label`;
 
       // //   var diagram = "stateDiagram-v2\n";

cypress/platform/xss19.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = `classDiagram
+      let diagram = `classDiagram
 class Shape{
     <<<img/src='1'/`;
 

cypress/platform/xss2.html

@@ -54,9 +54,9 @@
         startOnLoad: true,
         useMaxWidth: true,
       });
-      var cnt = 0;
+      let cnt = 0;
-      var a;
+      let a;
-      var handler = setInterval(() => {
+      const handler = setInterval(() => {
         cnt++;
         a = {};
         if (typeof a.polluted !== 'undefined') {

cypress/platform/xss20.html

@@ -96,7 +96,7 @@
       //       var diagram = `  graph TD
       // A --> B["<a href='javasc`;
       // diagram += `ript#colon;xssAttack()'>AAA</a>"]`;
-      var diagram = `  graph TD
+      let diagram = `  graph TD
 A --> B["<a href='javasc`;
       diagram += `ript#colon;xssAttack()'>AAA</a>"]`;
       // diagram += '//via.placeholder.com/64\' width=64 />"]';

cypress/platform/xss21.html

@@ -96,7 +96,7 @@
       //       var diagram = `  graph TD
       // A --> B["<a href='javasc`;
       // diagram += `ript#colon;xssAttack()'>AAA</a>"]`;
-      var diagram = `  graph TD
+      let diagram = `  graph TD
 A --> B["<a href='javasc`;
       diagram += `ript#9;t#colon;xssAttack()'>AAA</a>"]`;
       // diagram += '//via.placeholder.com/64\' width=64 />"]';

cypress/platform/xss3.html

@@ -42,9 +42,9 @@
         startOnLoad: true,
         useMaxWidth: true,
       });
-      var cnt = 0;
+      let cnt = 0;
-      var a;
+      let a;
-      var handler = setInterval(() => {
+      const handler = setInterval(() => {
         cnt++;
         a = {};
         if (typeof a.polluted !== 'undefined') {

cypress/platform/xss4.html

@@ -85,7 +85,7 @@
         alert('It worked');
       }
 
-      var diagram = '%%{init: {"flowchart": {"htmlLabels": "true"}} }%%\n';
+      let diagram = '%%{init: {"flowchart": {"htmlLabels": "true"}} }%%\n';
       diagram += 'flowchart\n';
       diagram += 'A["<ifra';
       diagram += "me srcdoc='<scrip";

cypress/platform/xss5.html

@@ -92,7 +92,7 @@
         document.getElementsByTagName('body')[0].appendChild(div);
         throw new Error('XSS Succeeded');
       }
-      var diagram = 'graph LR\n';
+      let diagram = 'graph LR\n';
       diagram += 'B-->D("<img onerror=location=`java';
       // diagram += "script\u003aalert\u0028document.domain\u0029\` src=x>\"\);\n";
       diagram += 'script\x3a;xssAttack\u0028\u0029` src=x>");\n';

cypress/platform/xss6.html

@@ -92,7 +92,7 @@
         document.getElementsByTagName('body')[0].appendChild(div);
         throw new Error('XSS Succeeded');
       }
-      var diagram = 'graph LR\n';
+      let diagram = 'graph LR\n';
       diagram += 'A(<img/src/onerror=xssAttack`1`>)';
       // diagram += "script\u003aalert\u0028document.domain\u0029\` src=x>\"\);\n";
       console.log(diagram);

cypress/platform/xss7.html

@@ -92,7 +92,7 @@
         document.getElementsByTagName('body')[0].appendChild(div);
         throw new Error('XSS Succeeded');
       }
-      var diagram = 'graph LR\n';
+      let diagram = 'graph LR\n';
       diagram += " B(<a href='<";
       diagram += 'script></';
       diagram += "script>Javascript:xssAttack`1`'>Click)";

cypress/platform/xss8.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = 'stateDiagram-v2\n';
+      let diagram = 'stateDiagram-v2\n';
       diagram += "<img/src='1'/onerror=xssAttack()> --> B";
       // diagram += "script\u003aalert\u0028document.domain\u0029\` src=x>\"\);\n";
       console.log(diagram);

cypress/platform/xss9.html

@@ -93,7 +93,7 @@
         throw new Error('XSS Succeeded');
       }
 
-      var diagram = 'stateDiagram-v2\n';
+      let diagram = 'stateDiagram-v2\n';
       diagram += "<img/src='1'/onerror=xssAttack()> --> B";
       // diagram += "script\u003aalert\u0028document.domain\u0029\` src=x>\"\);\n";
       console.log(diagram);

demos/c4context.html

@@ -277,7 +277,7 @@
     <script>
       function testClick(nodeId) {
         console.log('clicked', nodeId);
-        var originalBgColor = document.querySelector('body').style.backgroundColor;
+        let originalBgColor = document.querySelector('body').style.backgroundColor;
         document.querySelector('body').style.backgroundColor = 'yellow';
         setTimeout(function () {
           document.querySelector('body').style.backgroundColor = originalBgColor;

demos/dataflowchart.html

@@ -46,7 +46,7 @@
     <script>
       function testClick(nodeId) {
         console.log('clicked', nodeId);
-        var originalBgColor = document.querySelector('body').style.backgroundColor;
+        let originalBgColor = document.querySelector('body').style.backgroundColor;
         document.querySelector('body').style.backgroundColor = 'yellow';
         setTimeout(function () {
           document.querySelector('body').style.backgroundColor = originalBgColor;

demos/flowchart.html

@@ -1513,7 +1513,7 @@
     <script>
       function testClick(nodeId) {
         console.log('clicked', nodeId);
-        var originalBgColor = document.querySelector('body').style.backgroundColor;
+        let originalBgColor = document.querySelector('body').style.backgroundColor;
         document.querySelector('body').style.backgroundColor = 'yellow';
         setTimeout(function () {
           document.querySelector('body').style.backgroundColor = originalBgColor;

demos/gantt.html

@@ -174,7 +174,7 @@
       }
       function testClick(nodeId) {
         console.log('clicked', nodeId);
-        var originalBgColor = document.querySelector('body').style.backgroundColor;
+        let originalBgColor = document.querySelector('body').style.backgroundColor;
         document.querySelector('body').style.backgroundColor = 'yellow';
         setTimeout(function () {
           document.querySelector('body').style.backgroundColor = originalBgColor;

docs/Setup.md

@@ -1561,7 +1561,7 @@ Returns **void**
 
 ```html
 <script>
-  var config = {
+  const config = {
     theme: 'default',
     logLevel: 'fatal',
     securityLevel: 'strict',

docs/classDiagram.md

@@ -589,7 +589,7 @@ click Shape2 call callbackFunction() "This is a tooltip for a callback"
 
 ```html
 <script>
-  var callbackFunction = function () {
+  const callbackFunction = function () {
     alert('A callback was triggered');
   };
 </script>
@@ -653,10 +653,10 @@ Beginner's tip—a full example using interactive links in an HTML page:
   </pre>
 
   <script>
-    var callback = function () {
+    const callback = function () {
       alert('A callback was triggered');
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       securityLevel: 'loose',
     };

docs/diagrams-and-syntax-and-examples/flowchart.md

@@ -649,7 +649,7 @@ A node can have click events bound that lead to either a JavaScript callback or
 
 ```html
 <script>
-  var callback = function (nodeId) {
+  const callback = function (nodeId) {
     alert('A callback was triggered on ' + nodeId);
   };
 </script>
@@ -727,10 +727,10 @@ Beginner's tip—here's a full example of using interactive links in HTML:
   </pre>
 
   <script>
-    var callback = function () {
+    const callback = function () {
       alert('A callback was triggered');
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       flowchart: {
         useMaxWidth: true,

docs/flowchart.md

@@ -695,7 +695,7 @@ Examples of tooltip usage below:
 
 ```html
 <script>
-  var callback = function () {
+  const callback = function () {
     alert('A callback was triggered');
   };
 </script>
@@ -771,10 +771,10 @@ Beginner's tip—a full example using interactive links in a html context:
   </pre>
 
   <script>
-    var callback = function () {
+    const callback = function () {
       alert('A callback was triggered');
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       flowchart: { useMaxWidth: true, htmlLabels: true, curve: 'cardinal' },
       securityLevel: 'loose',

docs/gantt.md

@@ -391,13 +391,13 @@ Beginner's tip—a full example using interactive links in an html context:
   </pre>
 
   <script>
-    var printArguments = function (arg1, arg2, arg3) {
+    const printArguments = function (arg1, arg2, arg3) {
       alert('printArguments called with arguments: ' + arg1 + ', ' + arg2 + ', ' + arg3);
     };
-    var printTask = function (taskId) {
+    const printTask = function (taskId) {
       alert('taskId: ' + taskId);
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       securityLevel: 'loose',
     };

docs/index.html

@@ -29,7 +29,7 @@
       src="https://plausible.io/js/plausible.js"
     ></script>
     <script>
-      var require = {
+      const require = {
         paths: { vs: 'https://cdnjs.cloudflare.com/ajax/libs/monaco-editor/0.29.1/min/vs' },
       };
     </script>
@@ -51,16 +51,16 @@
   <body>
     <div id="app"></div>
     <script>
-      var initEditor = exports.default;
+      let initEditor = exports.default;
-      var parser = new DOMParser();
+      let parser = new DOMParser();
-      var currentCodeExample = 0;
+      let currentCodeExample = 0;
-      var colorize = [];
+      let colorize = [];
 
       function colorizeEverything(html) {
         initEditor(monaco);
         return new Promise((resolve, reject) => {
           monaco.editor.setTheme('mermaid');
-          var parsed = parser.parseFromString(html, 'text/html').body;
+          let parsed = parser.parseFromString(html, 'text/html').body;
           Promise.all(
             [...parsed.querySelectorAll('pre[id*="code"]')].map((codeBlock) =>
               monaco.editor.colorize(codeBlock.innerText, 'mermaid')
@@ -117,7 +117,7 @@
           function (hook, vm) {
             hook.beforeEach(function (html) {
               url = 'https://github.com/mermaid-js/mermaid/blob/develop/src/docs/' + vm.route.file;
-              var editHtml = '[:memo: Edit this Page](' + url + ')\n';
+              let editHtml = '[:memo: Edit this Page](' + url + ')\n';
               return editHtml + html;
             });
 
@@ -136,7 +136,6 @@
         ],
       };
 
-      var num = 0;
       const isDarkMode = window.matchMedia('(prefers-color-scheme: dark)').matches;
 
       const conf = {

docs/usage.md

@@ -208,14 +208,14 @@ The example below show an outline of how this could be used. The example just lo
 
 <script>
   mermaid.mermaidAPI.initialize({ startOnLoad: false });
-  $(function () {
+  $(async function () {
     // Example of using the API var
     element = document.querySelector('#graphDiv');
-    var insertSvg = function (svgCode, bindFunctions) {
+    const insertSvg = function (svgCode, bindFunctions) {
       element.innerHTML = svgCode;
     };
-    var graphDefinition = 'graph TB\na-->b';
+    const graphDefinition = 'graph TB\na-->b';
-    var graph = mermaid.mermaidAPI.render('graphDiv', graphDefinition, insertSvg);
+    const graph = await mermaid.mermaidAPI.render('graphDiv', graphDefinition, insertSvg);
   });
 </script>
 ```
@@ -339,7 +339,7 @@ on what kind of integration you use.
 ```html
 <script src="../dist/mermaid.js"></script>
 <script>
-  var config = { startOnLoad: true, flowchart: { useMaxWidth: false, htmlLabels: true } };
+  let config = { startOnLoad: true, flowchart: { useMaxWidth: false, htmlLabels: true } };
   mermaid.initialize(config);
 </script>
 ```

packages/mermaid/src/docs/Setup.md

@@ -1559,7 +1559,7 @@ Returns **void**
 
 ```html
 <script>
-  var config = {
+  const config = {
     theme: 'default',
     logLevel: 'fatal',
     securityLevel: 'strict',

packages/mermaid/src/docs/classDiagram.md

@@ -399,7 +399,7 @@ click Shape2 call callbackFunction() "This is a tooltip for a callback"
 
 ```html
 <script>
-  var callbackFunction = function () {
+  const callbackFunction = function () {
     alert('A callback was triggered');
   };
 </script>
@@ -451,10 +451,10 @@ Beginner's tip—a full example using interactive links in an HTML page:
   </pre>
 
   <script>
-    var callback = function () {
+    const callback = function () {
       alert('A callback was triggered');
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       securityLevel: 'loose',
     };

packages/mermaid/src/docs/diagrams-and-syntax-and-examples/flowchart.md

@@ -416,7 +416,7 @@ click nodeId call callback()
 
 ```html
 <script>
-  var callback = function (nodeId) {
+  const callback = function (nodeId) {
     alert('A callback was triggered on ' + nodeId);
   };
 </script>
@@ -471,10 +471,10 @@ Beginner's tip—here's a full example of using interactive links in HTML:
   </pre>
 
   <script>
-    var callback = function () {
+    const callback = function () {
       alert('A callback was triggered');
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       flowchart: {
         useMaxWidth: true,

packages/mermaid/src/docs/flowchart.md

@@ -442,7 +442,7 @@ Examples of tooltip usage below:
 
 ```html
 <script>
-  var callback = function () {
+  const callback = function () {
     alert('A callback was triggered');
   };
 </script>
@@ -495,10 +495,10 @@ Beginner's tip—a full example using interactive links in a html context:
   </pre>
 
   <script>
-    var callback = function () {
+    const callback = function () {
       alert('A callback was triggered');
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       flowchart: { useMaxWidth: true, htmlLabels: true, curve: 'cardinal' },
       securityLevel: 'loose',

packages/mermaid/src/docs/gantt.md

@@ -327,13 +327,13 @@ Beginner's tip—a full example using interactive links in an html context:
   </pre>
 
   <script>
-    var printArguments = function (arg1, arg2, arg3) {
+    const printArguments = function (arg1, arg2, arg3) {
       alert('printArguments called with arguments: ' + arg1 + ', ' + arg2 + ', ' + arg3);
     };
-    var printTask = function (taskId) {
+    const printTask = function (taskId) {
       alert('taskId: ' + taskId);
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       securityLevel: 'loose',
     };

packages/mermaid/src/docs/index.html

@@ -29,7 +29,7 @@
       src="https://plausible.io/js/plausible.js"
     ></script>
     <script>
-      var require = {
+      const require = {
         paths: { vs: 'https://cdnjs.cloudflare.com/ajax/libs/monaco-editor/0.29.1/min/vs' },
       };
     </script>
@@ -51,16 +51,16 @@
   <body>
     <div id="app"></div>
     <script>
-      var initEditor = exports.default;
+      let initEditor = exports.default;
-      var parser = new DOMParser();
+      let parser = new DOMParser();
-      var currentCodeExample = 0;
+      let currentCodeExample = 0;
-      var colorize = [];
+      let colorize = [];
 
       function colorizeEverything(html) {
         initEditor(monaco);
         return new Promise((resolve, reject) => {
           monaco.editor.setTheme('mermaid');
-          var parsed = parser.parseFromString(html, 'text/html').body;
+          let parsed = parser.parseFromString(html, 'text/html').body;
           Promise.all(
             [...parsed.querySelectorAll('pre[id*="code"]')].map((codeBlock) =>
               monaco.editor.colorize(codeBlock.innerText, 'mermaid')
@@ -117,7 +117,7 @@
           function (hook, vm) {
             hook.beforeEach(function (html) {
               url = 'https://github.com/mermaid-js/mermaid/blob/develop/src/docs/' + vm.route.file;
-              var editHtml = '[:memo: Edit this Page](' + url + ')\n';
+              let editHtml = '[:memo: Edit this Page](' + url + ')\n';
               return editHtml + html;
             });
 
@@ -136,7 +136,6 @@
         ],
       };
 
-      var num = 0;
       const isDarkMode = window.matchMedia('(prefers-color-scheme: dark)').matches;
 
       const conf = {

packages/mermaid/src/docs/usage.md

@@ -208,14 +208,14 @@ The example below show an outline of how this could be used. The example just lo
 
 <script>
   mermaid.mermaidAPI.initialize({ startOnLoad: false });
-  $(function () {
+  $(async function () {
     // Example of using the API var
     element = document.querySelector('#graphDiv');
-    var insertSvg = function (svgCode, bindFunctions) {
+    const insertSvg = function (svgCode, bindFunctions) {
       element.innerHTML = svgCode;
     };
-    var graphDefinition = 'graph TB\na-->b';
+    const graphDefinition = 'graph TB\na-->b';
-    var graph = mermaid.mermaidAPI.render('graphDiv', graphDefinition, insertSvg);
+    const graph = await mermaid.mermaidAPI.render('graphDiv', graphDefinition, insertSvg);
   });
 </script>
 ```
@@ -339,7 +339,7 @@ on what kind of integration you use.
 ```html
 <script src="../dist/mermaid.js"></script>
 <script>
-  var config = { startOnLoad: true, flowchart: { useMaxWidth: false, htmlLabels: true } };
+  let config = { startOnLoad: true, flowchart: { useMaxWidth: false, htmlLabels: true } };
   mermaid.initialize(config);
 </script>
 ```

vdocs/config/Setup.md

@@ -29,7 +29,7 @@ mermaid.initialize({ flowchart: { htmlLabels: false } });
 **Example 2:**
 
 ```js
-var config = {
+const config = {
   startOnLoad: true,
   flowchart: { useMaxWidth: true, htmlLabels: true, curve: 'cardinal' },
 
@@ -1560,7 +1560,7 @@ Returns **void**
 
 ```html
 <script>
-  var config = {
+  const config = {
     theme: 'default',
     logLevel: 'fatal',
     securityLevel: 'strict',

vdocs/config/usage.md

@@ -211,11 +211,11 @@ The example below show an outline of how this could be used. The example just lo
   $(function () {
     // Example of using the API var
     element = document.querySelector('#graphDiv');
-    var insertSvg = function (svgCode, bindFunctions) {
+    const insertSvg = function (svgCode, bindFunctions) {
       element.innerHTML = svgCode;
     };
-    var graphDefinition = 'graph TB\na-->b';
+    const graphDefinition = 'graph TB\na-->b';
-    var graph = mermaid.mermaidAPI.render('graphDiv', graphDefinition, insertSvg);
+    const graph = mermaid.mermaidAPI.render('graphDiv', graphDefinition, insertSvg);
   });
 </script>
 ```
@@ -339,7 +339,7 @@ on what kind of integration you use.
 ```html
 <script src="../dist/mermaid.js"></script>
 <script>
-  var config = { startOnLoad: true, flowchart: { useMaxWidth: false, htmlLabels: true } };
+  let config = { startOnLoad: true, flowchart: { useMaxWidth: false, htmlLabels: true } };
   mermaid.initialize(config);
 </script>
 ```

vdocs/syntax/classDiagram.md

@@ -399,7 +399,7 @@ click Shape2 call callbackFunction() "This is a tooltip for a callback"
 
 ```html
 <script>
-  var callbackFunction = function () {
+  const callbackFunction = function () {
     alert('A callback was triggered');
   };
 </script>
@@ -451,10 +451,10 @@ Beginner's tip—a full example using interactive links in an HTML page:
   </pre>
 
   <script>
-    var callback = function () {
+    const callback = function () {
       alert('A callback was triggered');
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       securityLevel: 'loose',
     };

vdocs/syntax/flowchart.md

@@ -449,7 +449,7 @@ Examples of tooltip usage below:
 
 ```html
 <script>
-  var callback = function () {
+  const callback = function () {
     alert('A callback was triggered');
   };
 </script>
@@ -502,10 +502,10 @@ Beginner's tip—a full example using interactive links in a html context:
   </pre>
 
   <script>
-    var callback = function () {
+    const callback = function () {
       alert('A callback was triggered');
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       flowchart: { useMaxWidth: true, htmlLabels: true, curve: 'cardinal' },
       securityLevel: 'loose',

vdocs/syntax/gantt.md

@@ -327,13 +327,13 @@ Beginner's tip—a full example using interactive links in an html context:
   </pre>
 
   <script>
-    var printArguments = function (arg1, arg2, arg3) {
+    const printArguments = function (arg1, arg2, arg3) {
       alert('printArguments called with arguments: ' + arg1 + ', ' + arg2 + ', ' + arg3);
     };
-    var printTask = function (taskId) {
+    const printTask = function (taskId) {
       alert('taskId: ' + taskId);
     };
-    var config = {
+    const config = {
       startOnLoad: true,
       securityLevel: 'loose',
     };