Get credit/debit card type

getCardType.js

export const getCardType = (num) => {
  let type = 'unknow';
  if (num.match('^3[47]\\d{0,13}')) {
    type = 'amex';
  } else if (num.match('^(?:6011|65\\d{0,2}|64[4-9]\\d?)\\d{0,12}')) {
    type = 'discover';
  } else if (num.match('^3(?:0([0-5]|9)|[689]\\d?)\\d{0,11}')) {
    type = 'diners';
  } else if (num.match('^(5[1-5]\\d{0,2}|22[2-9]\\d{0,1}|2[3-7]\\d{0,2})\\d{0,12}')) {
    type = 'mastercard';
  } else if (num.match('^(?:2131|1800)\\d{0,11}') || num.match('^(?:35\\d{0,2})\\d{0,12}')) {
    type = 'jcb';
  } else if (num.match('^(?:5[0678]\\d{0,2}|6304|67\\d{0,2})\\d{0,12}')) {
    type = 'maestro';
  } else if (num.match('^4\\d{0,15}')) {
    type = 'visa';
  } else if (num.match('^62\\d{0,14}')) {
    type = 'unionpay';
  } else {
    type = 'unknow';
  }
  return type;
};