问Vue的$emit操作是异步的吗？

EN

methods: {
  emitEvent() {
    this.$emit('myEvent')
    console.log('emitted')
  },
},
mounted() {
  this.$on('myEvent', () => {
    console.log('triggered')
  })
}

"triggered"
"emitted"

Vue.component('child', {
  props: ['count'],
  methods: {
    emitEvent() {
      this.$emit('increment')
      console.log('after emit', this.count);
      Vue.nextTick(() => {
        console.log('next tick', this.count);
      })
    },
  },
  template: `<div>count {{count}}. <button @click="emitEvent()">emit</button></div>`
})

const example2 = new Vue({
  el: "#root",
  data: {
    count: 100,
  },
  methods: {
    increment() {
      this.count++;
    }
  },
  template: `<div id="example-2"><child :count="count" @increment="increment" /></div>`
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>

<div id="root"></div>