We already know that we can show nodes, tooltips, popup and draw lines using our leaflet-vue3 wrapper. It was pointed out that there is one more feature we need to support, which is clustering the markers when there are many marker on the map in small area. Investigate if the wrapper we are using already support this feature, if yes, how much effort to implement it. If not, any solution. 

ps.  since we recently have a request to change javascript to typescript, so we need to count this in when we do the investigate