fix #3757 : Remove dynamic imports for lazy load.

tests/webpack/src/index.js

@@ -1,6 +1,38 @@
 /* eslint-disable @typescript-eslint/no-var-requires */
 /* eslint-disable no-console */
 const mermaid = require('mermaid');
-// import mermaid from 'mermaid';
+import mindmap from '@mermaid-js/mermaid-mindmap';
 
-console.log(mermaid);
+const render = async (graph) => {
+  const svg = await mermaid.renderAsync('dummy', graph);
+  console.log(svg);
+  document.getElementById('graphDiv').innerHTML = svg;
+};
+
+const load = async () => {
+  await mermaid.registerExternalDiagrams([mindmap]);
+  await render('info');
+
+  setTimeout(async () => {
+    await render(`mindmap
+  root((mindmap))
+    Origins
+      Long history
+      ::icon(fa fa-book)
+      Popularisation
+        British popular psychology author Tony Buzan
+    Research
+      On effectivness<br/>and features
+      On Automatic creation
+        Uses
+            Creative techniques
+            Strategic planning
+            Argument mapping
+    Tools
+      Pen and paper
+      Mermaid
+			`);
+  }, 2500);
+};
+
+window.addEventListener('load', load, false);