Rector\TypeDeclaration\Rector\FunctionLike\AddClosureParamTypeForArrayMapRector

AddClosureParamTypeForArrayMapRector

Applies type hints to array_map closures

-array_map(function ($value, $key): string {
+array_map(function (string $value, int $key): bool {
     return $value . $key;
 }, $strings);

Configure your rector.php:

<?php

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

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