ran npm run tdd

test/isSorted/isSorted.js

@@ -1,6 +1,7 @@
-module.exports = isSorted = arr => {
+const isSorted = arr => {
 const direction = arr[0] > arr[1] ? -1 : 1;
 for (let [i, val] of arr.entries())
 if (i === arr.length - 1) return direction;
 else if ((val - arr[i + 1]) * direction > 0) return 0;
-};
+};
+ module.exports = isSorted