Whether this big integer can be represented as an int
without losing precision.
Warning: this function may give a different result on dart2js, dev compiler, and the VM, due to the differences in integer precision.
bool get isValidInt;
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-core/BigInt/isValidInt.html