1.calling leaflet map: var map = maps().map(id, coordinate, zoomlevel) here id is mapid, coordinate to centre map, and zoomlevel
2.calling intrested base map: var satellite = maps().google('satellite').addTo(map) Here'satellite' can be changed with any other google basemaps like 'satellite','street', 'terrain','hybrid'. And also you can call osm, esri world imaginary, topography, cycleOSM, watercolor by .osm(), .esri(), .topo(), cycleOSM(), waterColor()