FunctionLikeToFirstClassCallableRector

Converts arrow function and closures to first class callable

-function ($parameter) {
-    return Call::to($parameter);
-}
+Call::to(...);

Configure your rector.php:

<?php

use Rector\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector;
use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withRules([
        FunctionLikeToFirstClassCallableRector::class,
    ]);
SETS:  PHP 8.1