ReadOnlyClassRector

Decorate read-only class with readonly attribute

-final class SomeClass
+final readonly class SomeClass
 {
     public function __construct(
-        private readonly string $name
+        private string $name
     ) {
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\Php82\Rector\Class_\ReadOnlyClassRector;

return RectorConfig::configure()
    ->withRules([
        ReadOnlyClassRector::class,
    ]);
SETS:  PHP 8.2