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    var leafletMapContainer = document.querySelector('[data-js="leafletMapContainer"]');
    var map = L.map(leafletMapContainer).setView([60, -70], 14);
    L.tileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png').addTo(map);

    // add a marker on the map
    L.marker([60, -70]).addTo(map);