rector.php

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\ClassMethod\AddVoidReturnTypeWhereNoReturnRector;

return RectorConfig::configure()
    ->withPaths([
        __DIR__.'/config',
        __DIR__.'/src',
        __DIR__.'/tests',
    ])
    // uncomment to reach your current PHP version
    // ->withPhpSets()
    ->withRules([
        AddVoidReturnTypeWhereNoReturnRector::class,
    ]);