From d874918b550e37f0e0ccbcf3355e7759fc8f27bb Mon Sep 17 00:00:00 2001
From: Nuno Maduro <enunomaduro@gmail.com>
Date: Fri, 22 Oct 2021 20:47:16 +0100
Subject: [PATCH] Fixes `Collection::unique` types

---
 src/Illuminate/Collections/Collection.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Illuminate/Collections/Collection.php b/src/Illuminate/Collections/Collection.php
index 0f6ff8859ea7..ce8a35601c79 100644
--- a/src/Illuminate/Collections/Collection.php
+++ b/src/Illuminate/Collections/Collection.php
@@ -1468,9 +1468,9 @@ public function transform(callable $callback)
     /**
      * Return only unique items from the collection array.
      *
-     * @param  string|callable|null  $key
+     * @param  (callable(TValue, TKey): bool)|string|null  $key
      * @param  bool  $strict
-     * @return static
+     * @return static<TKey, TValue>
      */
     public function unique($key = null, $strict = false)
     {