update

node_modules/bs-recipes/recipes/webpack.react-hot-loader/app/js/HelloWorld.jsx

@@ -0,0 +1,14 @@
+import React, { Component } from 'react';
+
+export default class HelloWorld extends Component {
+  render() {
+    // Play with it...
+    const name = 'World';
+
+    return (
+      <h2 className="hello-world">
+        <span className="hello-world__i">Hello, {name}</span>
+      </h2>
+    );
+  }
+}

node_modules/bs-recipes/recipes/webpack.react-hot-loader/app/js/main.js

@@ -0,0 +1,7 @@
+import React from 'react';
+import { render } from 'react-dom';
+// It's important to not define HelloWorld component right in this file
+// because in that case it will do full page reload on change
+import HelloWorld from './HelloWorld.jsx';
+
+render(<HelloWorld />, document.getElementById('react-root'));