From bd23666b45976f8bdd059b427fdd0a21419a63de Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Thu, 10 Apr 2014 00:54:27 -0700
Subject: [PATCH] Ensure `_.contains` works with a `fromIndex` for objects.

---
 lodash.js | 49 ++++++++++++++++++++++++++-----------------------
 1 file changed, 26 insertions(+), 23 deletions(-)

diff --git a/lodash.js b/lodash.js
index 3f17973b6..755ab6141 100644
--- a/lodash.js
+++ b/lodash.js
@@ -3645,31 +3645,34 @@
      */
     function contains(collection, target, fromIndex) {
       var length = collection ? collection.length : 0;
-      fromIndex = (typeof fromIndex == 'number' && fromIndex) || 0;
-
-      if (typeof length == 'number' && length > -1 && length <= maxSafeInteger) {
-        if (typeof collection == 'string' || !isArray(collection) && isString(collection)) {
-          if (fromIndex >= length) {
-            return false;
-          }
-          return nativeContains
-            ? nativeContains.call(collection, target, fromIndex)
-            : collection.indexOf(target, fromIndex) > -1;
-        }
-        var indexOf = getIndexOf();
-        fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : fromIndex;
-        return indexOf(collection, target, fromIndex) > -1;
+      if (!(typeof length == 'number' && length > -1 && length <= maxSafeInteger)) {
+        var props = keys(collection);
+        length = props.length;
       }
-      var index = -1,
-          result = false;
-
-      baseEach(collection, function(value) {
-        if (++index >= fromIndex) {
-          return !(result = value === target);
+      if (typeof fromIndex == 'number') {
+        fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : (fromIndex || 0);
+      } else {
+        fromIndex = 0;
+      }
+      if (props) {
+        while (fromIndex < length) {
+          var value = collection[props[fromIndex++]];
+          if (value === target) {
+            return true;
+          }
         }
-      });
-
-      return result;
+        return false;
+      }
+      if (typeof collection == 'string' || !isArray(collection) && isString(collection)) {
+        if (fromIndex >= length) {
+          return false;
+        }
+        return nativeContains
+          ? nativeContains.call(collection, target, fromIndex)
+          : collection.indexOf(target, fromIndex) > -1;
+      }
+      var indexOf = getIndexOf();
+      return indexOf(collection, target, fromIndex) > -1;
     }
 
     /**