Passed test 1

repeatString/repeatString.js

@@ -1,5 +1,18 @@
-const repeatString = function() {
+const repeatString = function(string, number) {
+
+    let result = '';
+
+    for (let i = 0; i < number; i++) {
+        if (number < 0) {
+            return 'ERROR';
+        } else {
+            result += string;
+        }
+
+    }
+
+    return result;
 
 }
 
-module.exports = repeatString
+module.exports = repeatString