As a Firefox user I definitely want to see better FF support here!
The first step is to get a good test suite. Currently our tests only run on Chrome. So after we get tests running on Firefox, we can move to better support it.
Only the "treemap" chart is broken for me, everything else seems to work ok (Firefox Developer Edition 111.0b6 64-bit Linux. Enhanced tracking protection turned on).
I'm having issues with it loading in Safari (14.1.2) on OS X, but it seems to be loading fine with Firefox (111.0.1) for me. Its pretty zippy too, and this computer is no spring chicken...
(my previous comment regarding this issue: https://news.ycombinator.com/item?id=35441337#35454074)