I'll take that as a confirmation of feasibility. Among the languages who integer types default to unbounded, I can think of Python, Erlang, and Scheme (Others?

I'll take that as a confirmation of feasibility. Among the languages who integer types default to unbounded, I can think of Python, Erlang, and Scheme (Others? Haskell has both Int and Integer), but it doesn't appear that BBV has been tried outside of Higgs. I guess I could get close by changing something like https://github.com/peterolson/BigInteger.js https://github.com/peterolson/BigInteger.js to use native JavaScript numbers for small integers. One of these days.