Init with create-react-app

src/index.js

@@ -0,0 +1,10 @@
+/* eslint-disable react/jsx-filename-extension */
+
+import React from 'react';
+import ReactDOM from 'react-dom';
+import './index.css';
+import { PortfolioBuilderApp } from './Components/PortfolioBuilderApp';
+import registerServiceWorker from './registerServiceWorker';
+
+ReactDOM.render(<PortfolioBuilderApp />, document.getElementById('root'));
+registerServiceWorker();