Implement repeat str function

Author: bytesandroses

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

@@ -1,5 +1,13 @@
-function repeatStr() {
-  return "hellohellohello";
+function repeatStr(str, count) {
+  if (typeof str !== "string")
+    throw new Error("Please use a string i.e. 'Hello World'");
+
+  if (!Number.isInteger(count))
+    throw new Error("Please set count to an integer");
+
+  if (count < 0) throw new Error("Please use a count of 0 or greater");
+
+  return str.repeat(count);
 }
 
 module.exports = repeatStr;