AddParamTypeSplFixedArrayRector

Add exact fixed array type in known cases

+use PhpCsFixer\Tokenizer\Token;
 use PhpCsFixer\Tokenizer\Tokens;

 class SomeClass
 {
+    /**
+     * @param Tokens<Token>
+     */
     public function run(Tokens $tokens)
     {
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\FunctionLike\AddParamTypeSplFixedArrayRector;

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