<?php
  
use RoachPHP\Support\DroppableInterface;
  
interface ItemInterface extends DroppableInterface, ArrayAccess
{
    /**
     * Returns the underlying data array.
     */
    public function all(): array;
  
    /**
     * Set a value on the item for the provided `$key`.
     */
    public function set(string $key, mixed $value): self;
  
    /**
     * Retrieve the value for `$key` or return `$default` instead.
     */
    public function get(string $key, mixed $default = null): mixed;
  
    /**
     * Checks if `$key` exists on the item. Note that this checks
     * if `$key` exists on the underlying data array, not if the
     * value is truthy.
     */
    public function has(string $key): bool;
}