bigIntToString static method
Implementation
static String bigIntToString(BigInt? value, {bool withComma = false}) {
if (value == null) return '';
final str = value.toString();
if (!withComma) return str;
final buffer = StringBuffer();
int count = 0;
for (int i = str.length - 1; i >= 0; i--) {
buffer.write(str[i]);
count++;
if (count % 3 == 0 && i != 0) buffer.write(',');
}
return buffer.toString().split('').reversed.join('');
}