<ltng: require styles = "/ resource / leaflet / leaflet.css"
      scripts = "{! join (',', '/resource/leaflet/leaflet.js',
      '/resource/routing/leaflet-routing/src/control.js')}"
       afterScriptsLoaded = "{! c.jsLoaded}" />

L.Routing.control ({
waypoints: [L.latLng (57.74, 11.94), L.latLng (57.6792, 11.949)]
}). addTo (map);