laravel-macros/app/Providers/Macros/CollectionProvider.php

<?php

namespace App\Providers\Macros;

use Illuminate\Support\Collection;
use Illuminate\Support\ServiceProvider;

class CollectionProvider extends ServiceProvider
{
    /**
     * Register services.
     */
    public function register(): void
    {
        //
    }

    /**
     * Bootstrap services.
     */
    public function boot(): void
    {
        /**
         * Recursively convert array to collection
         */
        Collection::macro('recursive', function () {
            $this->whenNotEmpty($recursive = function ($collection) use (&$recursive) {
                if (is_array($collection)) {
                    return $recursive(new static($collection));
                } else if ($collection instanceof Collection) {
                    $collection->transform(fn ($value, $key) => $collection->{$key} = $recursive($value));
                } else if (is_object($collection)) {
                    foreach ($collection as $k => &$v) {
                        $collection->{$k} = $recursive($v);
                    }
                }

                return $collection;
            });
        });
    }
}