card-validator
Version:
A library for validating credit card fields
55 lines (54 loc) • 1.98 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.cardNumber = void 0;
var luhn10 = require("./luhn-10");
var getCardTypes = require("credit-card-type");
function verification(card, isPotentiallyValid, isValid) {
return {
card: card,
isPotentiallyValid: isPotentiallyValid,
isValid: isValid,
};
}
function cardNumber(value, options) {
if (options === void 0) { options = {}; }
var isPotentiallyValid, isValid, maxLength;
if (typeof value !== "string" && typeof value !== "number") {
return verification(null, false, false);
}
var testCardValue = String(value).replace(/-|\s/g, "");
if (!/^\d*$/.test(testCardValue)) {
return verification(null, false, false);
}
var potentialTypes = getCardTypes(testCardValue);
if (potentialTypes.length === 0) {
return verification(null, false, false);
}
else if (potentialTypes.length !== 1) {
return verification(null, true, false);
}
var cardType = potentialTypes[0];
if (options.maxLength && testCardValue.length > options.maxLength) {
return verification(cardType, false, false);
}
if (options.skipLuhnValidation === true ||
(cardType.type === getCardTypes.types.UNIONPAY &&
options.luhnValidateUnionPay !== true)) {
isValid = true;
}
else {
isValid = luhn10(testCardValue);
}
maxLength = Math.max.apply(null, cardType.lengths);
if (options.maxLength) {
maxLength = Math.min(options.maxLength, maxLength);
}
for (var i = 0; i < cardType.lengths.length; i++) {
if (cardType.lengths[i] === testCardValue.length) {
isPotentiallyValid = testCardValue.length < maxLength || isValid;
return verification(cardType, isPotentiallyValid, isValid);
}
}
return verification(cardType, testCardValue.length < maxLength, false);
}
exports.cardNumber = cardNumber;