A function which returns an object based on the credit card number with credit card issuer properties

getCreditCardIssuer.js

function getCreditCardIssuer(number) {
  number = number.toString();
  if (/^4[0-9]{12}(?:[0-9]{3})?$/.test(number)) { // Visa
    return {
      issuer : 'Visa',
      cidLength : 3,
      length : 16
    };
  } else if (/^5[1-5][0-9]{14}$/.test(number)) { // MasterCard
    return {
      issuer : 'MasterCard',
      cidLength : 3,
      length : 16
    };
  } else if (/^3[47][0-9]{13}$/.test(number)) { // American Express
    return {
      issuer    : 'American Express',
      cidLength : 4,
      length : 15
    };
  } else if (/^6(?:011|5[0-9]{2})[0-9]{12}$/.test(number)) { // Discover
    return {
      issuer    : 'Discover',
      cidLength : 3,
      length : 16
    };
  }
  return false;
}