BetaReadonlyinputReadonlyisReadonlyvalidThe zero-based input slot index.
The item stack in the input slot, or undefined if the slot is empty.
World mutationThe zero-based input slot index.
Optionalitem: ItemStackThe item stack to place in the slot, or undefined to clear the slot.
World mutationThe identifier of a valid recipe to select.
Provides access to the slots and recipe of a players active crafting UI ie. stonecutter.