From 1e8ac50ab59a1bb1072d97d11fc271213ba8b749 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Lipi=C5=84ski?= <mylith@gmail.com>
Date: Wed, 22 Feb 2017 22:28:42 +0100
Subject: [PATCH] Missing iteratee call in `countBy` (missed in 5baad4d).

---
 countBy.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/countBy.js b/countBy.js
index fb5d44752..f72ece75b 100644
--- a/countBy.js
+++ b/countBy.js
@@ -22,6 +22,7 @@ const hasOwnProperty = Object.prototype.hasOwnProperty
  */
 function countBy(collection, iteratee) {
   return reduce(collection, (result, value, key) => {
+    key = iteratee(value)
     if (hasOwnProperty.call(result, key)) {
       ++result[key]
     } else {