[DeadCode] Handle crash on valid conditional type on RemoveUselessReturnTagRector

rules-tests/DeadCode/Rector/ClassMethod/RemoveUselessReturnTagRector/Fixture/skip_valid_conditional_return.php.inc

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Rector\Tests\DeadCode\Rector\ClassMethod\RemoveUselessReturnTagRector\Fixture;
+
+final readonly class SkipValidConditionalReturn
+{
+    /**
+     * Groups an array by a key returned by a callback.
+     *
+     * Example:
+     *
+     * return SkipValidConditionalReturn::groupBy(
+     *     $results,
+     *     fn ($ticket) => (string) $ticket->getFile()->getId(),
+     * );
+     *
+     * @template TValue of mixed
+     * @template TCallbackValue of mixed
+     * @template TKey of array-key
+     * @param array<TValue> $input
+     * @param callable(TValue): TKey $keyCallback
+     * @param null|callable(TValue): TCallbackValue $valueCallback
+     *
+     * @return ($valueCallback is null ? array<TKey, non-empty-list<TValue>> : array<TKey, non-empty-list<TCallbackValue>>)
+     */
+    public static function groupBy(array $input, callable $keyCallback, ?callable $valueCallback = null) : array
+    {
+        $output = [];
+        foreach ($input as $result) {
+            $output[$keyCallback($result)][] = $valueCallback !== null ? $valueCallback($result) : $result;
+        }
+
+        return $output;
+    }
+}

rules/CodingStyle/Rector/FuncCall/ArraySpreadInsteadOfArrayMergeRector.php

@@ -142,7 +142,7 @@ private function shouldSkipArrayForInvalidTypeOrKeys(Expr $expr): bool
         }
 
         $arrayStaticType = $this->getType($expr);
-        if (! $arrayStaticType->isArray()->yes()) {
+        if (! $arrayStaticType instanceof ArrayType && ! $arrayStaticType instanceof ConstantArrayType) {
             return true;
         }
 

rules/TypeDeclaration/Rector/ClassMethod/ReturnTypeFromStrictNewArrayRector.php

@@ -147,7 +147,7 @@ private function processAddArrayReturnType(
         ClassMethod|Function_|Closure $node,
         Type $returnType
     ): ClassMethod|Function_|Closure|null {
-        if (! $returnType->isArray()->yes()) {
+        if (! $returnType instanceof ArrayType && ! $returnType instanceof ConstantArrayType) {
             return null;
         }
 
@@ -174,8 +174,10 @@ private function shouldSkip(ClassMethod|Function_|Closure $node, Scope $scope):
         );
     }
 
-    private function changeReturnType(ClassMethod|Function_|Closure $node, ArrayType|ConstantArrayType $arrayType): void
-    {
+    private function changeReturnType(
+        ClassMethod|Function_|Closure $node,
+        ArrayType|ConstantArrayType $arrayType
+    ): void {
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($node);
 
         // skip already filled type, on purpose

rules/TypeDeclaration/TypeNormalizer.php

@@ -6,7 +6,6 @@
 
 use PHPStan\Type\ArrayType;
 use PHPStan\Type\Constant\ConstantArrayType;
-use PHPStan\Type\IntersectionType;
 use PHPStan\Type\MixedType;
 use PHPStan\Type\NeverType;
 use PHPStan\Type\Type;
@@ -40,15 +39,10 @@ public function __construct(
      */
     public function normalizeArrayOfUnionToUnionArray(Type $type, int $arrayNesting = 1): Type
     {
-        if (! $type->isArray()->yes()) {
+        if (! $type instanceof ArrayType && ! $type instanceof ConstantArrayType) {
             return $type;
         }
 
-        if ($type instanceof UnionType || $type instanceof IntersectionType) {
-            return $type;
-        }
-
-        /** @var ArrayType|ConstantArrayType $type */
         if ($type instanceof ConstantArrayType && $arrayNesting === 1) {
             return $type;
         }