[carbonica]

Not having int64/uint64 is kind of a deal-breaker for any such library. Which means, in JavaScript, a big integer library. I don't see one.

[vjeux]

I haven't see much int64 in the binary files I've been working on so far. Do you have any examples?

It is possible to make an Integer64 class, the downside is the lack of ability to overload default operators such as +, *, < ... That is annoying but not deal-breaking