Add declare(strict_types=1)
if missing
+declare(strict_types=1);
+
function someFunction()
{
}
Configure your rector.php
:
<?php
use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\StmtsAwareInterface\DeclareStrictTypesRector;
return RectorConfig::configure()
->withRules([
DeclareStrictTypesRector::class,
]);