RemoveRedundantTypeCheckRector

Find another rule

Remove is_() check that can never fail on already known type

 class SomeClass
 {
     public function run(?string $value, array $items)
     {
-        if ($value === null || ! is_string($value)) {
+        if ($value === null) {
             return;
         }

-        if ($items && is_array($items)) {
+        if ($items) {
             return;
         }
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\BinaryOp\RemoveRedundantTypeCheckRector;

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

SETS: Dead Code