create for invalid also

Author: gaireprakash20-ops

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

@@ -24,7 +24,19 @@
 // execute the code to ensure all tests pass.
 
 export function getCardValue(card) {
-  const value = card.slice(0, 1);
+  const errorMessage = `Expected a number followed by a suit, but got "${card}"`;
+
+  if (typeof card !== "string") {
+    throw new Error(errorMessage);
+  }
+
+  const value = card.slice(0, -1);
+  const suit = card.slice(-1);
+
+  if (!["♠", "♥", "♦", "♣"].includes(suit)) {
+    throw new Error(errorMessage);
+  }
+
   if (value === "A") {
     return 11;
   } else if (value === "J") {
@@ -33,10 +45,10 @@ export function getCardValue(card) {
     return 10;
   } else if (value === "K") {
     return 10;
-  } else if (Number(value) >= "2" && Number(value) <= "10") {
+  } else if (["2", "3", "4", "5", "6", "7", "8", "9", "10"].includes(value)) {
     return Number(value);
   } else {
-    return NaN;
+    throw new Error(errorMessage);
   }
 }
-// console.log(getCardValue("2♠"));
+console.log(getCardValue("10♠"));