复制需要 debug 的 React development.js 源码至本地，替换引用即可。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Hello World</title>
<script src="https://unpkg.com/react@18/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"></script>
<!-- Don't use this in production: -->
<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
</head>
<body>
<div id="root"></div>
<script type="text/babel">
const { useEffect } = React;
function MyApp() {
useEffect(() => {
console.log('effect run');
}, []);
return <h1>Hello, world!</h1>;
}
const container = document.getElementById('root');
const root = ReactDOM.createRoot(container);
root.render(<MyApp />);
</script>
</body>
</html>
