Fixed case changed for arrays of strings

README.md

@@ -56,6 +56,9 @@ MIT
 
 ## Changelog
 2.0.0 Object values are no longer being transformed by default
+
 1.1.1 Stricter checking for code guideline  
+
 1.1.0 Add support for arrays and primitives  
+
 1.0.0 Initial version

index.js

@@ -8,7 +8,7 @@ var changeKeys = function changeKeys(transformer, obj) {
   if (Array.isArray(obj)) {
     return obj.map(function keysMap(key) {
       if (typeof key === 'string') {
-        return transformer(key);
+        return key;
       }
 
       return changeKeys(transformer, key);