Fantastic visualization! Any idea about the tools used to achieve that result? Inspecting the code a bit I'd say regarding the viz it's based on leaflet.js+can

Fantastic visualization! Any idea about the tools used to achieve that result? Inspecting the code a bit I'd say regarding the viz it's based on leaflet.js+canvas(custom overlays)? No trace of d3js, threejs,etc. I'm happy to see riotjs so nicely used as well.