text: import React from 'react';
  import ReactDOM from 'react-dom';
  import '@livechat/design-system/dist/design-system.css';
  import './index.css';
  import App from './App';
  
  if (process.env.REACT_APP_CLIENT_ID) {
      ReactDOM.render(<App />, document.getElementById('root'));
  } else {
      throw new Error('Missing CLIENT_ID value');
  }
  