yes it seems last update u can manage vectors and polygons over map.
• https://leafletjs.com/#features
Layers Out of the Box
Tile layers, WMS
Markers, Popups Vector layers: polylines, polygons, circles, rectangles
Image overlays
GeoJSON
Beacause when u switch OSM AREA vector become a standard POI.
This will be implemented, but I don’t have an ETA yet – I have a few other items ahead of it. Until then, you would need to use the Google drawing tools.