text: import Vue from 'vue';
  import firebase from 'firebase';
  import App from './App.vue';
  import router from './router';
  import store from './store';
  import './registerServiceWorker';
  
  import './index.css';
  
  
  Vue.config.productionTip = false;
  
  const app = '';
  
  firebase.auth().onAuthStateChanged((user) => { // eslint-disable-line no-unused-vars
    if (!app) {
      new Vue({
        router,
        store,
        firebase,
        render: h => h(App),
      }).$mount('#app');
    }
  });
  