"<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8">
<link href="./leaflet/leaflet.css" rel="stylesheet">
<script type="text/javascript" src="./leaflet/leaflet.js"></script>
<script type="text/javascript" src="./dist/leaflet/iclient-leaflet.js"></script>
</head>
<body>
<!-- 地图显示的div -->
<div id="map" style="position:absolute;left:0px;right:0px;width:800px;height:500px;"></div>
<script>
var map;
var url ="
https://iserver.supermap.io/iserver/services/map-world/rest/maps/World";
// 初始化地图信息
map = L.map('map', {
crs: L.CRS.EPSG4326,
center: [0, 0],
maxZoom: 18,
zoom: 1
});
new L.supermap.TiledMapLayer(url).addTo(map);
</script>
</body>
</html>
报错：Untitled-1.html:22 Uncaught TypeError: L.supermap.TiledMapLayer is not a constructor
at Untitled-1.html:22:5"
