AddReturnDocblockForDimFetchArrayFromAssignsRector

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Add @return docblock for methods returning array from dim fetch of assigned arrays

 final class SomeClass
 {
-    public function toArray(): array
+    /**
+     * @return array<string, string>
+     */
+    public function toArray()
     {
         $items = [];

         if (mt_rand(0, 1)) {
             $items['key'] = 'value';
         }

         if (mt_rand(0, 1)) {
             $items['another_key'] = 'another_value';
         }

         return $items;
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclarationDocblocks\Rector\ClassMethod\AddReturnDocblockForDimFetchArrayFromAssignsRector;

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