Added in a if for Number.isNaN to check if for word or symbol input instead of a number value or the J Q K A

Author: HM-127BTY

implement-and-rewrite-tests/implement/3-get-card-value.js

@@ -39,6 +39,8 @@ export function getCardValue(card) {
     return 10;
   } else if (cardNumber === "A") {
     return 11;
+  } else if (Number.isNaN(value)) {
+    throw new Error("Incorrect card number given");
   } else if (value >= 2 && value <= 10) {
     return value;
   } else if (value < 2 || value > 10) {