From a681789b9b7cd0f7659e5807a2e5838276f5413e Mon Sep 17 00:00:00 2001
From: Simon Podlipsky <simon@podlipsky.net>
Date: Wed, 19 Aug 2020 08:59:17 +0200
Subject: [PATCH] Add getKey() return type as string

---
 src/Enum.php | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/Enum.php b/src/Enum.php
index 92a42a4..1d4f7ec 100644
--- a/src/Enum.php
+++ b/src/Enum.php
@@ -83,9 +83,8 @@ public function getValue()
      * Returns the enum key (i.e. the constant name).
      *
      * @psalm-pure
-     * @return mixed
      */
-    public function getKey()
+    public function getKey(): string
     {
         return static::search($this->value);
     }
@@ -200,11 +199,11 @@ public static function isValidKey($key)
     /**
      * Return key for value
      *
-     * @param $value
+     * @param mixed $value
      *
      * @psalm-param mixed $value
      * @psalm-pure
-     * @return mixed
+     * @return string|false
      */
     public static function search($value)
     {