chore(demo): update to react@18 and [email protected]

Author: bkrem

demo/package-lock.json

@@ -9,9 +9,9 @@
     "@testing-library/user-event": "^7.1.2",
     "clone": "^2.1.2",
     "gh-pages": "^3.1.0",
-    "react": "^17.0.1",
-    "react-d3-tree": "^3.1.0",
-    "react-dom": "^17.0.1",
+    "react": "^18.2.0",
+    "react-d3-tree": "^3.3.4",
+    "react-dom": "^18.2.0",
     "react-scripts": "^3.4.4"
   },
   "scripts": {

demo/package.json

@@ -1,9 +1,6 @@
 import React from 'react';
-import ReactDOM from 'react-dom';
+import { createRoot } from 'react-dom/client';
 import App from './App';
 import './index.css';
 
-ReactDOM.render(
-  <App />,
-  document.getElementById('root')
-);
+createRoot(document.getElementById('root')).render(<App />);