digitsToNumber method
Implementation
int? digitsToNumber(List<int> digits, [int? base]) {
base ??= maxBase;
var currBase = 1;
return JSShim.reduceRight<dynamic, int>(digits, (prev, curr, index, list) {
var ret = prev + curr * currBase;
currBase *= base!;
return ret;
}, 0) as int?;
}