viewof map = {
let container = html`<div style='height:400px;' />`;
yield container;
let map = new mapboxgl.Map({
container,
center: [4.352731704711914, 50.846272321172954],
zoom: 4,
style: "mapbox://styles/mapbox/dark-v9"
});
map.on('load', () => {
map.addSource('Light', {
type: 'geojson',
data: lightData
});
});
}