frames/plugins/vue2-leaflet-markercluster.js

import Vue from 'vue'
import * as L from 'leaflet'
import Vue2LeafletMarkerCluster from 'vue2-leaflet-markercluster'
import 'leaflet/dist/leaflet.css'
import 'leaflet.markercluster/dist/MarkerCluster.css'
import 'leaflet.markercluster/dist/MarkerCluster.Default.css'

Vue.component('VMarkerCluster', Vue2LeafletMarkerCluster)

const LeafletPlugin = {
  install (Vue) {
    Vue.prototype.$L = L
  }
}

Vue.use(LeafletPlugin);