Vue.js 未捕获的错误：[vuecompositionapi] 必须在使用任何函数之前调用 Vue.use(plugin)

考虑下面的合成函数:

import { computed, ref } from '@vue/composition-api'
import { isInternetExplorer } from 'src/services/utils/utilsService'
import { Screen } from 'quasar'
import { auth, getAllScopes } from 'src/services/auth/authService'

const isLoginPopup = Screen.lt.sm || isInternetExplorer ? false : true
const accountID = ref('')

export const setAccountID = () => {
  const account = auth.getAccount()

  if (account) { accountID.value = account.idTokenClaims.oid } 
  else { accountID.value = '' }
}

export const useAccount = () => {
  const loading = ref(false)
  const disabled = ref(false)

  const login = async () => {
    loading.value = true
    disabled.value = true

    const allScopes = getAllScopes()

    if (isLoginPopup) {
      try {
        await auth.loginPopup(allScopes)
      } finally {
        setAccountID()
        disabled.value = false
        loading.value = false
      }
    } else {
      auth.loginRedirect(allScopes)
    }
  }

  const logout = () => { auth.logout() }

  return {
    accountID: computed(() => accountID.value),
    isAuthenticated: computed(() => Boolean(accountID.value)),
    loading: computed(() => loading.value),
    disabled: computed(() => disabled.value),
    login, logout,
  }
}

Now when I want to use the isAuthenticated computed property within /router/index.js Vue throws the error "Uncaught Error: [vue-composition-api] must call Vue.use(plugin) before using any function.":

import { route } from 'quasar/wrappers'
import VueRouter from 'vue-router'
import routes from './routes'

import { useAccount } from 'src/comp-functions/useAccount'

export default route(function ({ Vue }) {
  Vue.use(VueRouter)

  const Router = new VueRouter({
    scrollBehavior: () => ({ x: 0, y: 0 }),
    routes,

    mode: process.env.VUE_ROUTER_MODE,
    base: process.env.VUE_ROUTER_BASE,
  })

  Router.beforeEach((to, from, next) => {
    const { isAuthenticated } = useAccount()

    if (isAuthenticated || to.path === '/' || to.path === '/login') {
      next()
    } else {
      next('/login')
    }
  })

  return Router
})

组件API由文件"/boot/auth"中的Quasar Framework boot file实例化.js':

import VueCompositionApi from '@vue/composition-api'
import { boot } from 'quasar/wrappers'

export default boot(({ Vue }) => {
  Vue.use(VueCompositionApi)
})

有没有办法在组件之外使用导出的计算(computed)属性？

根据this example，它是一个使用相同合成API的库，当isAuthenticated在Router对象中实例化时，它应该可以工作.有more people人在努力解决这个问题，但我似乎无法正确处理.