diff --git a/src/lib/isCreditCard.js b/src/lib/isCreditCard.js
index 938679d39..0890000ca 100644
--- a/src/lib/isCreditCard.js
+++ b/src/lib/isCreditCard.js
@@ -1,42 +1 @@
-import assertString from './util/assertString';
-import isLuhnValid from './isLuhnNumber';
-
-const cards = {
-  amex: /^3[47][0-9]{13}$/,
-  dinersclub: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
-  discover: /^6(?:011|5[0-9][0-9])[0-9]{12,15}$/,
-  jcb: /^(?:2131|1800|35\d{3})\d{11}$/,
-  mastercard: /^5[1-5][0-9]{2}|(222[1-9]|22[3-9][0-9]|2[3-6][0-9]{2}|27[01][0-9]|2720)[0-9]{12}$/, // /^[25][1-7][0-9]{14}$/;
-  unionpay: /^(6[27][0-9]{14}|^(81[0-9]{14,17}))$/,
-  visa: /^(?:4[0-9]{12})(?:[0-9]{3,6})?$/,
-};
-
-const allCards = (() => {
-  const tmpCardsArray = [];
-  for (const cardProvider in cards) {
-    // istanbul ignore else
-    if (cards.hasOwnProperty(cardProvider)) {
-      tmpCardsArray.push(cards[cardProvider]);
-    }
-  }
-  return tmpCardsArray;
-})();
-
-export default function isCreditCard(card, options = {}) {
-  assertString(card);
-  const { provider } = options;
-  const sanitized = card.replace(/[- ]+/g, '');
-  if (provider && provider.toLowerCase() in cards) {
-    // specific provider in the list
-    if (!(cards[provider.toLowerCase()].test(sanitized))) {
-      return false;
-    }
-  } else if (provider && !(provider.toLowerCase() in cards)) {
-    /* specific provider not in the list */
-    throw new Error(`${provider} is not a valid credit card provider.`);
-  } else if (!allCards.some(cardProvider => cardProvider.test(sanitized))) {
-    // no specific provider
-    return false;
-  }
-  return isLuhnValid(card);
-}
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\ No newline at end of file