osb/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\Facades\Gate;
use Illuminate\Support\ServiceProvider;
use Leenooks\Traits\SingleOrFail;

class AppServiceProvider extends ServiceProvider
{
	use SingleOrFail;

    /**
     * Register any application services.
     */
    public function register(): void
    {

    }

    /**
     * Bootstrap any application services.
     */
    public function boot(): void
    {
		self::bootSingleOrfail();

		Gate::define('wholesaler', function ($user) {
			return $user->isWholesaler();
		});

		Gate::define('reseller', function ($user) {
			return $user->isReseller();
		});
    }
}