dleitee/valid.js

const isVisa = creditCard => {
    const visaRegex = /^4[0-9]{12}(?:[0-9]{3})?$/;
    return visaRegex.test(creditCard);
};

const isElo = creditCard => {
    const eloRegex = /^(401178|401179|431274|438935|451416|457393|457631|457632|504175|627780|636297|636368|(506699|5067[0-6]\d|50677[0-8])|(50900\d|5090[1-9]\d|509[1-9]\d{2})|65003[1-3]|(65003[5-9]|65004\d|65005[0-1])|(65040[5-9]|6504[1-3]\d)|(65048[5-9]|65049\d|6505[0-2]\d|65053[0-8])|(65054[1-9]|6505[5-8]\d|65059[0-8])|(65070\d|65071[0-8])|65072[0-7]|(65090[1-9]|65091\d|650920)|(65165[2-9]|6516[6-7]\d)|(65500\d|65501\d)|(65502[1-9]|6550[3-4]\d|65505[0-8]))[0-9]{10,12}/;
    return eloRegex.test(creditCard);
};

const isHipercard = creditCard => {
    let hiperCard = /^(38[0-9]{17}|60[0-9]{14})$/;
    return hiperCard.test(creditCard);
};

const isMasterCard = creditCard => {
    let masterCardRegex = /^5[1-5][0-9]{14}$/;
    return masterCardRegex.test(creditCard);
};

const isDiners = creditCard => {
    let dinersRegex = /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/;
    return dinersRegex.test(creditCard);
};

const isAmex = creditCard => {
    let amexRegex = /^3[47][0-9]{13}$/;
    return amexRegex.test(creditCard);
};

const isCreditCard = creditCard =>
    isAmex(creditCard) || isDiners(creditCard) ||
    isMasterCard(creditCard) || isHipercard(creditCard) || isElo(creditCard) ||
    isVisa(creditCard) || false;

/*
 * Export constant creditCard
 */
export const creditCard = {
    isVisa: isVisa,
    isElo: isElo,
    isHipercard: isHipercard,
    isMasterCard: isMasterCard,
    isDiners: isDiners,
    isAmex: isAmex,
    isCreditCard: isCreditCard
};