Author here. I'm running this in "production" (kinda, on laptop, looking at data from my own servers), and works for me. There are some annoying shortcomings, though, which I will fix, eventually.

Among them is error reporting and handling: there's pretty much none. If the network dies, potential-happiness will not be too happy: it will cry and crash.

Bug reports, feature requests and whatnot are of course appreciated. I wrote this mostly for my own use, so it isn't exactly friendly just yet. (That, and my JavaScript is terrible.)