Refactor repeat function to return early for invalid input and remove redundant code

Author: Iswanna

Sprint-3/2-practice-tdd/repeat.js

@@ -1,16 +1,29 @@
 function repeat(valueToRepeat, numOfTimes) {
+  // Validate count
+  if (!Number.isInteger(numOfTimes)) {
+    return "Invalid count: count should be an integer";
+  }
+  if (numOfTimes < 0) {
+    return "Negative number invalid";
+  }
+  if (numOfTimes === 0) {
+    return "";
+  }
+
+  // Convert arrays to empty string
+  if (Array.isArray(valueToRepeat)) {
+    valueToRepeat = "";
+  }
+
+  // Convert other types to string
+  const strValue = String(valueToRepeat);
+
+  // Repeat the string
   let repeatedValue = "";
-  if (numOfTimes > 0 && Number.isInteger(numOfTimes)) {
-    for (let i = 0; i < numOfTimes; i++) {
-      repeatedValue += valueToRepeat;
-    }
-  } else if (numOfTimes === 0) {
-    repeatedValue = "";
-  } else if(numOfTimes < 0) {
-    repeatedValue = "Negative number invalid";
-  } else if(!Number.isInteger(numOfTimes)) {
-    repeatedValue = "Invalid count: count should be an integer"
+  for (let i = 0; i < numOfTimes; i++) {
+    repeatedValue += strValue;
   }
+
   return repeatedValue;
 }