From 45c317f83a70895d3fed399a2eaf85caec0c5b09 Mon Sep 17 00:00:00 2001
From: Alexey Kopytko <alexey@kopytko.com>
Date: Tue, 24 Oct 2023 09:34:47 +0900
Subject: [PATCH] Avoid array_merge()

---
 src/Standard.php | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/Standard.php b/src/Standard.php
index 69e15b2..4361466 100644
--- a/src/Standard.php
+++ b/src/Standard.php
@@ -32,7 +32,6 @@
 use function array_filter;
 use function array_flip;
 use function array_map;
-use function array_merge;
 use function array_reduce;
 use function array_shift;
 use function array_slice;
@@ -190,7 +189,15 @@ private function join(iterable $left, iterable $right): self
     {
         // We got two arrays, that's what we will use.
         if (is_array($left) && is_array($right)) {
-            $this->pipeline = array_merge($left, $right);
+            $this->pipeline = [];
+
+            foreach ($left as $key => $value) {
+                $this->pipeline[$key] = $value;
+            }
+
+            foreach ($right as $key => $value) {
+                $this->pipeline[$key] = $value;
+            }
 
             return $this;
         }