Problem:

Passing a flat into NumberInt() and NumberLong() has some inconsistent behavior.

Correct:
> r = NumberInt(-4.1);
NumberInt(-4)
> r = NumberLong(-4.1);
NumberLong(-4)

Incorrect:

> r = NumberLong(Number.MIN_VALUE);
NumberLong(0)
> r = NumberLong(Number.MAX_VALUE);
NumberLong("-9223372036854775808")

> r = NumberInt(Number.MIN_VALUE);
NumberInt(0)
> r = NumberInt(Number.MAX_VALUE);
NumberInt(0)