如何使用ant- path -leaflet显示最短路径？

npm install ant-path-leaflet leaflet

<link rel="stylesheet" href="https://unpkg.com/leaflet/dist/leaflet.css" />
<script src="https://unpkg.com/leaflet/dist/leaflet.js"></script>
<script src="https://unpkg.com/ant-path-leaflet"></script>

<div id="map"></div>

var map = L.map('map').setView([51.505, -0.09], 13);

L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
    attribution: 'Map data &copy; <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors',
}).addTo(map);

var path = L.polyline.antPath([[51.5, -0.09], [51.51, -0.1]], {
    color: '#FF0000',
    weight: 5,
    opacity: 0.6,
    dashArray: '10, 20',
    pulseColor: '#FFFFFF',
}).addTo(map);

var shortestPath = [[51.5, -0.09], [51.51, -0.1], [51.52, -0.11]]; // 最短路径的坐标点
path.setLatLngs(shortestPath);