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Rector version: dev-main@656565 released at 2022-10-04 10:31:39

Input Code

<?php

final class DemoFile
{
    public function run()
    {
        return 5;

        // we never get here
        return 10;
    }
}

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\Php74\Rector\Property\TypedPropertyRector;
use Rector\Set\ValueObject\SetList;

return static function (RectorConfig $rectorConfig): void {
    // A. run whole set
    $rectorConfig->sets([
        SetList::DEAD_CODE,
    ]);

    // B. or single rule
    $rectorConfig->rule(TypedPropertyRector::class);
};