spa-js-api/app/Policies/UserPolicy.php

<?php

namespace App\Policies;

use App\Models\User;
use Illuminate\Auth\Access\HandlesAuthorization;

class UserPolicy
{
    use HandlesAuthorization;

    /**
     * Create a new policy instance.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    public function admin(User $user)
    {
        return $user->role->code === "admin";
    }

    public function user(User $user)
    {
        return $user->role->code === "user";
    }


}