Sorry for the inconvenience. I know that there are some issues with performance - antialiasing isn't fast enough (there are around 300k vertices in zoom 16 for example). I'll try to do better, as this is my first library too. Anyway, it is in early stages and working on, so expect updates in near future.
https://cdn.rawgit.com/areknawo/ThreeMap/a76571ba/example/in...
However, doesn't look too impressive to me :-( (Firefox)