refactor(react-graph): use func comp

example/build/index.js

@@ -212,7 +212,7 @@ var parent = module.bundle.parent;
 if ((!parent || !parent.isParcelRequire) && typeof WebSocket !== 'undefined') {
   var hostname = "" || location.hostname;
   var protocol = location.protocol === 'https:' ? 'wss' : 'ws';
-  var ws = new WebSocket(protocol + '://' + hostname + ':' + "61901" + '/');
+  var ws = new WebSocket(protocol + '://' + hostname + ':' + "56024" + '/');
 
   ws.onmessage = function (event) {
     checkedAssets = {};

example/index.js

@@ -1,9 +1,9 @@
 import React from 'react';
-import ReactDOM from 'react-dom';
+import { render } from 'react-dom';
+import { unstable_trace as trace } from "scheduler/tracing";
 
 import SimpleGraph from './SimpleGraph';
 
-ReactDOM.render(
-  <SimpleGraph />,
-  document.getElementById('root')
+trace('initial render', performance.now(), () =>
+  render(<SimpleGraph />, document.getElementById('root'))
 );