Rector\Php74\Rector\Closure\ClosureToArrowFunctionRector

ClosureToArrowFunctionRector

Change closure to arrow function

 class SomeClass
 {
     public function run($meetups)
     {
-        return array_filter($meetups, function (Meetup $meetup) {
-            return is_object($meetup);
-        });
+        return array_filter($meetups, fn(Meetup $meetup) => is_object($meetup));
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\Php74\Rector\Closure\ClosureToArrowFunctionRector;

return RectorConfig::configure()
    ->withRules([
        ClosureToArrowFunctionRector::class,
    ]);

SETS: PHP 7.4