App.vue

<template>
  <div id="app">
    <div id="map" style="height: 500px;"></div>
  </div>
</template>

<script>
import L from 'leaflet';

export default {
  name: 'App',
  mounted() {
    this.initMap();
  },
  methods: {
    initMap() {
      const map = L.map('map').setView([51.505, -0.09], 13);
      L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
        attribution: '© OpenStreetMap contributors'
      }).addTo(map);
    }
  }
}
</script>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}

/* Ensure you import Leaflet CSS */
@import "~leaflet/dist/leaflet.css";
</style>