diff --git a/src/index.ts b/src/index.ts
index 1361a1f..143b53b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,22 +1,25 @@
-import * as creditCardType from "credit-card-type";
+import * as creditCardTypeFunction from "credit-card-type";
 
 import { cardholderName } from "./cardholder-name";
-import { cardNumber as number } from "./card-number";
+import { cardNumber } from "./card-number";
 import { expirationDate } from "./expiration-date";
 import { expirationMonth } from "./expiration-month";
 import { expirationYear } from "./expiration-year";
 import { cvv } from "./cvv";
 import { postalCode } from "./postal-code";
+import { CreditCardType } from "credit-card-type/dist/types";
 
-const cardValidator = {
+const number = cardNumber;
+const creditCardType: (number: string) => Array<CreditCardType> =
+  creditCardTypeFunction.default;
+export {
   creditCardType,
   cardholderName,
   number,
+  cardNumber,
   expirationDate,
   expirationMonth,
   expirationYear,
   cvv,
   postalCode,
 };
-
-export = cardValidator;