text: import Vue from 'vue'
  import App from './App.vue'
  import store from './store'
  import router from './router'
  
  Vue.config.productionTip = false
  
  // 给$bus作为事件总线的方式
  Vue.prototype.$bus = new Vue();
  
  new Vue({
    store,
    router,
    render: h => h(App)
  }).$mount('#app')
  