如何通过leaflet.pm使GeoJSON数据不可编辑

<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/leaflet.pm/dist/leaflet.pm.min.js"></script>

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

L.tileLayer('https://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineStreetPurplishBlue/MapServer/tile/{z}/{y}/{x}', {
    attribution: 'Map data © Tencent',
    maxZoom: 18
}).addTo(map);

var geojsonFeature = {
    "type": "Feature",
    "properties": {},
    "geometry": {
        "type": "Polygon",
        "coordinates": [
            [
                [0, 0],
                [0, 10],
                [10, 10],
                [10, 0],
                [0, 0]
            ]
        ]
    }
};

var geojsonLayer = L.geoJSON(geojsonFeature).addTo(map);

geojsonLayer.pm.disable();