Clean up the oopsie. Rebuild the blank exercises.

node_modules/lodash/_baseSortedIndexBy.js

@@ -22,11 +22,14 @@ var nativeFloor = Math.floor,
  *  into `array`.
  */
 function baseSortedIndexBy(array, value, iteratee, retHighest) {
-  value = iteratee(value);
-
   var low = 0,
-      high = array == null ? 0 : array.length,
-      valIsNaN = value !== value,
+      high = array == null ? 0 : array.length;
+  if (high === 0) {
+    return 0;
+  }
+
+  value = iteratee(value);
+  var valIsNaN = value !== value,
       valIsNull = value === null,
       valIsSymbol = isSymbol(value),
       valIsUndefined = value === undefined;