text: import 'react-app-polyfill/ie9'; // For IE 9-11 support
  import 'react-app-polyfill/ie11'; // For IE 11 support
  import './polyfill'
  import React from 'react';
  import ReactDOM from 'react-dom';
  import './index.css';
  import axioApi from './config/axioConfig';
  import App from './App';
  import * as serviceWorker from './serviceWorker';
  let token = localStorage.getItem('token');    
  if(token){
  	axioApi.defaults.headers.common['x-access-token'] = localStorage.getItem('token');       
  	axioApi.get('/api/auth/checkToken').then((res) => { 
          localStorage.setItem('user_id', res.data._id);
  	}).catch((err) => {
          localStorage.removeItem('token');
      });   
  }
  ReactDOM.render(<App />, document.getElementById('root'));
  
  // 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.register();
  