If statements created inside the function to check for valid string of card rank and suits.

Author: russom

Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js

@@ -23,6 +23,41 @@
 
 function getCardValue(card) {
   // TODO: Implement this function
+
+  const validRanks = [ // An array of ranks are created here
+    "A",
+    "2",
+    "3",
+    "4",
+    "5",
+    "6",
+    "7",
+    "8",
+    "9",
+    "10",
+    "J",
+    "Q",
+    "K",
+  ];
+  const validSuits = ["♠", "♥", "♦", "♣"]; // An array of suits are created here.
+
+  if (typeof card !== "string") { // Here the type of values are checked whether they are string.
+    throw new Error("Invalid card: " + card);
+  }
+  const suit = card.slice(-1);
+  const rank = card.slice(0, -1);
+
+  if (!validRanks.includes(rank) || !validSuits.includes(suit)) { //Here the values that are stored in rank and suit are checked whether they are valid are inside the validRank and validSuits arrays.
+    throw new Error("Invalid card: " + card);
+  }
+
+  if (rank === "A") { // Here the code is testing wether the rank is an Ace.
+    return 11;
+  } else if (cards === "J" || rank === "Q" || rank === "K") { // Here the ranks are checked if they are J, Q or K and it returns 10
+    return 10;
+  } else { // Lastly any rank between 2 and 10 get checked and the same number of value returned.
+    return Number(rank);
+  }
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.