map = {
const container = html`<div style="height:600px;">`;
yield container;
const map = L.map(container).setView([39.73, -104.99], 10);
L.tileLayer("https://maps.wikimedia.org/osm-intl/{z}/{x}/{y}@2x.png", {
attribution: "Wikimedia maps beta | © <a href='http://osm.org/copyright'>OpenStreetMap</a> contributors"
}).addTo(map);
var overlays = {
"Cities": cities1,
"More Cities": cities2
};
L.control.layers(overlays).addTo(map);
}