isCardValidNumber function
checks not only for a length and characters but also for card system code. If it's not found the succession of numbers will not be marked as a valid card number
Implementation
@Deprecated('Use isCardNumberValid() instead')
bool isCardValidNumber(
String cardNumber, {
bool checkLength = false,
}) {
return isCardNumberValid(
cardNumber: cardNumber,
checkLength: checkLength,
useLuhnAlgo: false,
);
}