From 34910d40cf3b74f78d0e198a9b15c180e841520f Mon Sep 17 00:00:00 2001
From: Aydin Hassan <aydin@hotmail.co.uk>
Date: Wed, 19 Oct 2022 11:20:01 +0200
Subject: [PATCH] Phpstan flatmap support

---
 src/Utils/ArrayObject.php | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Utils/ArrayObject.php b/src/Utils/ArrayObject.php
index 0d7b9549..c5d2fa5b 100644
--- a/src/Utils/ArrayObject.php
+++ b/src/Utils/ArrayObject.php
@@ -71,8 +71,10 @@ public function filter(callable $callback): self
      * Run a callable over each item in the array and flatten the results by one level returning a new instance of
      * `ArrayObject` with the flattened items.
      *
-     * @param callable $callback
-     * @return static
+     * @template TFlatMapReturn of array
+     *
+     * @param  callable(T): TFlatMapReturn $callback
+     * @return static<int|string, mixed>
      */
     public function flatMap(callable $callback): self
     {