[DowngradePhp81] Handle ArrowFunction in DowngradeNeverTypeDeclarationRector

rules-tests/DowngradePhp81/Rector/FunctionLike/DowngradeNeverTypeDeclarationRector/Fixture/arrow_function_never.php.inc

@@ -0,0 +1,15 @@
+<?php
+
+namespace Rector\Tests\DowngradePhp81\Rector\FunctionLike\DowngradeNeverTypeDeclarationRector\Fixture;
+
+$callable = fn (): never => throw new \RuntimeException();
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\DowngradePhp81\Rector\FunctionLike\DowngradeNeverTypeDeclarationRector\Fixture;
+
+$callable = fn () => throw new \RuntimeException();
+
+?>

rules/DowngradePhp81/Rector/FunctionLike/DowngradeNeverTypeDeclarationRector.php

@@ -5,6 +5,7 @@
 namespace Rector\DowngradePhp81\Rector\FunctionLike;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr\ArrowFunction;
 use PhpParser\Node\Expr\Closure;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Function_;
@@ -31,7 +32,7 @@ public function __construct(
      */
     public function getNodeTypes(): array
     {
-        return [Function_::class, ClassMethod::class, Closure::class];
+        return [Function_::class, ClassMethod::class, Closure::class, ArrowFunction::class];
     }
 
     public function getRuleDefinition(): RuleDefinition
@@ -60,7 +61,7 @@ function someFunction()
     }
 
     /**
-     * @param ClassMethod|Closure|Function_ $node
+     * @param ArrowFunction|ClassMethod|Closure|Function_ $node
      */
     public function refactor(Node $node): ?Node
     {