lodash

Index: package/fromPairs.js
===================================================================
--- package/fromPairs.js
+++ package/fromPairs.js
@@ -1,4 +1,6 @@
+var baseAssignValue = require('./_baseAssignValue');
+
 /**
  * The inverse of `_.toPairs`; this method returns an object composed
  * from key-value `pairs`.
  *
@@ -19,9 +21,9 @@
       result = {};
 
   while (++index < length) {
     var pair = pairs[index];
-    result[pair[0]] = pair[1];
+    baseAssignValue(result, pair[0], pair[1]);
   }
   return result;
 }