Returns this BigInt as an int.
If the number does not fit, clamps to the max (or min) integer.
Warning: the clamping behaves differently on dart2js, dev compiler, and the VM, due to the differences in integer precision.
int toInt();
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-core/BigInt/toInt.html