let instance = null
function createServices (Comp) {
 // ...
 return new Vue({
 // ...
 }).$children[0]
}
function getInstance () {
 instance = instance || createServices(BubbleTransitionComponent)
 return instance
}
const BubbleTransition = {
 scaleIn: () => {
 return getInstance().animate('scaleIn')
 },
 fadeOut: () => {
 return getInstance().animate('fadeOut')
 }
}

<template>
 <div class="transition-bubble">
 <span v-show="animating" class="bubble" id="bubble">
 </span>
 </div>
</template>
<script>
import anime from 'animejs'
export default {
 name: 'transition-bubble',
 data () {
 return {
  animating: false,
  animeObjs: []
 }
 },
 methods: {
 scaleIn (selector = '#bubble', {duration = 800, easing = 'linear'} = {}) {
  // this.animeObjs.push(anime().finished)
 },
 fadeOut (selector = '#bubble', {duration = 300, easing = 'linear'} = {}) {
  // ...
 },
 resetAnimeObjs () {
  this.animeObjs.reset()
  this.animeObjs = []
 },
 animate (action, thenReset) {
  return this[action]().then(() => {
  this.resetAnimeObjs()
  })
 }
 }
}

<router-link class="router-link" to="/#__bubble__transition__">Home</router-link>
const BUBBLE_TRANSITION_IDENTIFIER = '__bubble__transition__'
router.beforeEach((to, from, next) => {
 if (to.hash.indexOf(BUBBLE_TRANSITION_IDENTIFIER) > 0) {
 const redirectTo = Object.assign({}, to)
 redirectTo.hash = ''
 BubbleTransition.scaleIn()
  .then(() => next(redirectTo))
 } else {
 next()
 }
})
router.afterEach((to, from) => {
 BubbleTransition.fadeOut()
})