From 54dc1e2e15c6fc466bd80b8747d1bcc34833b4f4 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Wed, 24 Sep 2014 11:12:14 -0700
Subject: [PATCH] Exit early from `_.contains` if `length` is `0` to avoid
 potentially mucking up `getIndexOf` by passing it an `undefined` collection.

---
 lodash.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lodash.js b/lodash.js
index ee9d0cdcd..ff32658d0 100644
--- a/lodash.js
+++ b/lodash.js
@@ -4712,6 +4712,9 @@
         collection = values(collection);
         length = collection.length;
       }
+      if (!length) {
+        return false;
+      }
       if (typeof fromIndex == 'number') {
         fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : (fromIndex || 0);
       } else {