CartState

 1<?php ...
 2 
 3namespace Thunk\Verbs\Examples\Cart\States;
 4 
 5use Thunk\Verbs\State; 
 6 
 7class CartState extends State
 8{
 9    public array $items = [];
10 
11    public bool $checked_out = false;
12 
13    public function count(int $item_id): int
14    {
15        return $this->items[$item_id] ?? 0;
16    }
17}