define(['leaflet'], function(L) {

	// GeoJSON feature grouping
	function returnMarker(feature, latlng) {
		var marker = new L.marker(latlng);
		// bindTooltip was introduced in LeafletJS 1.0.
		try {
			marker.bindTooltip(
				feature.properties.name,
				{permanent: true });
		} catch (e) {
			if (console) {
				console.warn('tooltip skipped (using an old Leaflet?)');
			}
		};
		return marker;
	};

	var place = L.geoJson([], {
		pointToLayer: returnMarker
	});

	return function(data) {
		place.addData(data);
		return L.layerGroup().addLayer(place);
	};
});