[phpstan] Add type-perfect extension

composer.json

@@ -12,6 +12,7 @@
         "phpstan/phpstan-webmozart-assert": "^2.0",
         "phpunit/phpunit": "^11.5",
         "rector/rector-src": "dev-main",
+        "rector/type-perfect": "^2.1",
         "symplify/easy-coding-standard": "^12.3",
         "symplify/phpstan-extensions": "^12.0",
         "symplify/phpstan-rules": "^14.9",

phpstan.neon

@@ -6,7 +6,7 @@ parameters:
     level: 8
     errorFormat: symplify
 
-    reportUnmatchedIgnoredErrors: false
+    # reportUnmatchedIgnoredErrors: false
 
     # see https://phpstan.org/writing-php-code/phpdoc-types#global-type-aliases
     typeAliases:
@@ -31,12 +31,11 @@ parameters:
         - '*/Source/*'
 
     # see https://github.com/rectorphp/type-perfect/
-# to be enabled later once rector upgraded to use phpstan v2
-#    type_perfect:
-#        no_mixed: true
-#        null_over_false: true
-#        narrow_param: true
-#        narrow_return: true
+    type_perfect:
+        no_mixed: true
+        null_over_false: true
+        narrow_param: true
+        narrow_return: true
 
     ignoreErrors:
         # php enum value minus

rules/DowngradePhp85/Rector/StmtsAwareInterface/DowngradePipeOperatorRector.php

@@ -5,6 +5,7 @@
 namespace Rector\DowngradePhp85\Rector\StmtsAwareInterface;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\ArrowFunction;
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\BinaryOp\Pipe;
@@ -104,14 +105,14 @@ public function refactor(Node $node): ?Node
         return $hasChanged ? $node : null;
     }
 
-    private function findPipeNode(Node $node): ?Pipe
+    private function findPipeNode(Expr $expr): ?Pipe
     {
-        if ($node instanceof Pipe) {
-            return $node;
+        if ($expr instanceof Pipe) {
+            return $expr;
         }
 
-        if ($node instanceof Assign && $node->expr instanceof Pipe) {
-            return $node->expr;
+        if ($expr instanceof Assign && $expr->expr instanceof Pipe) {
+            return $expr->expr;
         }
 
         return null;