text: import React from 'react';
  import ReactDOM from 'react-dom';
  import './index.css';
  import App from './App';
  import reportWebVitals from './reportWebVitals';
  import { BrowserRouter } from 'react-router-dom';
  import { Provider } from 'react-redux';
  import { createStore, applyMiddleware, compose, combineReducers } from 'redux';
  import burgerReducer from './store/reducers/burgerBuilder';
  import orderReducer from './store/reducers/order';
  import authReducer from './store/reducers/auth';
  import thunk from 'redux-thunk';
  
  const composeEnhancers = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ || compose;
  
  const rootReducer = combineReducers({
    burgerBuilder: burgerReducer,
    order: orderReducer,
    auth: authReducer
  });
  
  const store = createStore(rootReducer, composeEnhancers(
    applyMiddleware(thunk)
  ));
  
  const app = (
    <Provider store={store}>
      <BrowserRouter>
        <App />
      </BrowserRouter>
    </Provider>
  );
  
  ReactDOM.render(
    app,
    document.getElementById('root')
  );
  
  // If you want to start measuring performance in your app, pass a function
  // to log results (for example: reportWebVitals(console.log))
  // or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
  reportWebVitals();
  