Add a GeoJSON polygon

Style a polygon with the fill layer type.

Note
If you want to test this example, edit it in JSFiddle or CodePen and replace the "YOUR-OWN-API-KEY" and "YOUR-OWN-VPM-ID" placeholders with your actual api key and vpm id.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Add a GeoJSON polygon</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<script src="https://unpkg.com/unl-map-js@0.1.5/lib/unl-map-js.js"></script>
<link href="https://unpkg.com/unl-map-js@0.1.5/lib/unl-map-js.css" rel="stylesheet" />
<link
href="https://unpkg.com/maplibre-gl@2.1.9/dist/maplibre-gl.css"
rel="stylesheet"
/>
<style>
body { margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<div id="map"></div>
<script>
var map = new UnlSdk.Map({
container: "map",
apiKey: "YOUR-OWN-API-KEY",
vpmId: "YOUR-OWN-VPM-ID",
center: [-68.13734351262877, 45.137451890638886],
zoom: 5,
});
map.on("load", function () {
map.addSource("maine", {
type: "geojson",
data: {
type: "Feature",
geometry: {
type: "Polygon",
coordinates: [
[
[-67.13734351262877, 45.137451890638886],
[-66.96466, 44.8097],
[-68.03252, 44.3252],
[-69.06, 43.98],
[-70.11617, 43.68405],
[-70.64573401557249, 43.090083319667144],
[-70.75102474636725, 43.08003225358635],
[-70.79761105007827, 43.21973948828747],
[-70.98176001655037, 43.36789581966826],
[-70.94416541205806, 43.46633942318431],
[-71.08482, 45.3052400000002],
[-70.6600225491012, 45.46022288673396],
[-70.30495378282376, 45.914794623389355],
[-70.00014034695016, 46.69317088478567],
[-69.23708614772835, 47.44777598732787],
[-68.90478084987546, 47.184794623394396],
[-68.23430497910454, 47.35462921812177],
[-67.79035274928509, 47.066248887716995],
[-67.79141211614706, 45.702585354182816],
[-67.13734351262877, 45.137451890638886],
],
],
},
},
});
map.addLayer({
id: "maine",
type: "fill",
source: "maine",
layout: {},
paint: {
"fill-color": "#088",
"fill-opacity": 0.8,
},
});
});
</script>
</body>
</html>