https://leafletjs.com/reference-1.0.0.html#mouseevent-originalevent

originalEvent	DOMEvent	The original DOM MouseEvent or DOM TouchEvent that triggered this Leaflet event.




https://leafletjs.com/reference-1.0.0.html#map-locationerror

locationerror	ErrorEvent	Fired when geolocation (using the locate method) failed.
locationfound	LocationEvent	Fired when geolocation (using the locate method) went successfully.