TypeError in arrayUnset

Author: ThHareau

src/Helper.php

@@ -165,7 +165,7 @@ public static function arraySet(&$target, $key, $value, $overwrite = true): arra
      * @param  string|array $key
      * @return mixed
      */
-    public static function arrayUnset(&$target, $key): array
+    public static function arrayUnset(&$target, $key)
     {
         if (!is_array($target)) {
             return $target;

tests/ValidatorTest.php

@@ -803,6 +803,16 @@ public function testArrayAssocValidation()
         $this->assertNull($errors->first('user.name:required'));
     }
 
+    public function testEmptyArrayAssocValidation()
+    {
+        $validation = $this->validator->validate([], [
+            'user'=> 'required',
+            'user.email' => 'email',
+        ]);
+
+        $this->assertFalse($validation->passes());
+    }
+
     public function testArrayValidation()
     {
         $validation = $this->validator->validate([