Merge pull request #16 from samsonasik/increment

[Finder] Don't increment new key when preserveKey

Author: samsonasik

src/Finder.php

@@ -138,10 +138,10 @@ public static function rows(iterable $data, callable $filter, bool $preserveKey
                 continue;
             }
 
-            if (! is_numeric($key)) {
+            if ($preserveKey || ! is_numeric($key)) {
                 $rowKey = $key;
             } else {
-                $rowKey = $preserveKey ? $key : $newKey;
+                $rowKey = $newKey;
                 ++$newKey;
             }