Try Rector Online | Rector - Automated Way to Instantly Upgrade and Refactor any PHP code

Rector run Failed:

{ "totals": { "changed_files": 0, "errors": 1 }, "errors": [ { "message": "System error: \"Typed property PHPStan\\Type\\StaticType::$classReflection must not be accessed before initialization\"\nRun Rector with \"--debug\" option and post the report here: https://github.com/rectorphp/rector/issues/new", "file": "/var/www/storage/demo/mcpbk8ww2d7hx921rnd6/rector_analyzed_file.php", "line": 71 } ] }

Run Rector on your code to see what it can do for you:

PHP snippet to change

<?php

class DemoFile
{   
    /**
     * @inheritDoc
     */
    public function mymethod(string $name): static
    {
        assert(
            str_contains($name, ' ') && !str_starts_with($name, ' '),
            "The name '{$name}' is missing a space. Names should look like `cake routes`",
        );
        $this->name = $name;

        return $this;
    }
}

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\ClassMethod\AddReturnTypeDeclarationRector;
use Rector\TypeDeclaration\ValueObject\AddReturnTypeDeclaration;
use Rector\StaticTypeMapper\ValueObject\Type\SimpleStaticType;

return RectorConfig::configure()
    ->withConfiguredRule(AddReturnTypeDeclarationRector::class, [
        new AddReturnTypeDeclaration('DemoFile', 'mymethod', new SimpleStaticType('DemoFile')),
    ]);

Rector version: 0594c1 - released at 2026-05-08 19:57