define(['leaflet'], function(L) {
	// base config
	var attribOSM = '&copy; <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors';
	var attribCarto = '&copy; <a href="https://cartodb.com/attributions">CARTO</a>';
	var licenseODbL ='under the <a href="https://opendatacommons.org/licenses/odbl/1.0/">ODbL 1.0</a> license';
	var TileLayer = L.tileLayer('https://cartodb-basemaps-{s}.global.ssl.fastly.net/light_all/{z}/{x}/{y}.png', {
			attribution: 'Imagery ' + attribCarto + ' &mdash; Map data ' + attribOSM + ' ' + licenseODbL,
			subdomains: 'abcd',
			maxZoom: 19
		}),
		scale = L.control.scale({
			imperial: false
		});

	return function(id, bounds) {
		var map = L.map(id, {
				layers: [TileLayer]
			})
		if (bounds) {
			map.fitBounds(L.latLngBounds(bounds));
		} else {
			map.fitWorld().zoomIn();
		}
		map.attributionControl.setPrefix(false);

		scale.addTo(map);

		return map;
	};
});