Check for the existance of the 'mixed' key to detect untyped parameters

vimeo · Apr 20, 2023 · 9af8e41 · 9af8e41
1 parent 0a40286
commit 9af8e41
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/Psalm/Type/UnionTrait.php b/src/Psalm/Type/UnionTrait.php
@@ -800,11 +800,13 @@ public function isMixed(bool $check_templates = false): bool
         return count(
             array_filter(
                 $this->types,
-                static fn($type): bool => $type instanceof TMixed
+                static fn($type, $key): bool => $key == 'mixed'
+                    || $type instanceof TMixed
                     || ($check_templates
                         && $type instanceof TTemplateParam
                         && $type->as->isMixed()
                     )
+                , ARRAY_FILTER_USE_BOTH
             ),
         ) === count($this->types);
     }