[2460] How use VueRouter instance in the plugin?

I try use vue-analytics. In plugin i need VueRouter instance like this:

import Vue from 'vue'
import VueRouter from 'vue-router'
import VueAnalytics from 'vue-analytics'

const router = new VueRouter({
  router: // your routes
})

Vue.use(VueAnalytics, {
  id: 'UA-XXX-X',
  router
})

Where can I import a router based on the folder structure?