Why restrict to 54-bit signed integers? Is there some common language I’m not thinking of that has this as its limit?

Edit: Found it myself, it’s the range where you can store an integer in a double precision float without error. I suppose that makes sense for maximum compatibility, but feels gross if we’re already identifying value types. I don’t come from a web-dev/js background, though, so maybe it makes more sense there.

I’ve used this for a while now, and it’s an excellent app. It’s genuinely refreshing to have apps that just do their job without fuss or feature creep.