text: import React from 'react';
  import ReactDOM from 'react-dom';
  import { MuiThemeProvider} from '@material-ui/core/styles';
  import './index.css';
  import App from './App';
  import * as serviceWorker from './serviceWorker';
  
  import createTheme from '@iobroker/adapter-react/createTheme';
  
  let theme = 'light';
  
  function build() {
      return ReactDOM.render(<MuiThemeProvider theme={createTheme(theme)}>
          <App onThemeChange={_theme => {
              theme = _theme;
              build();
          }}/>
      </MuiThemeProvider>, document.getElementById('root'));
  }
  
  
  build();
  
  // If you want your app to work offline and load faster, you can change
  // unregister() to register() below. Note this comes with some pitfalls.
  // Learn more about service workers: http://bit.ly/CRA-PWA
  serviceWorker.unregister();
  