* rework the quantity change generator action so the UI updates quick:
- work in progress - still need to figure out how to debounce API call
- add new action for updating quantity for an item
- don't set cart item as pending while quantity is updating
- this leaves QuantitySelector enabled so user can click more/less
- use receiveCartItemQuantity to update quantity in UI before sending request
* debounce line item quantity first cut:
- use local state for quantity, so ui allows multiple clicks up/down
- debounce store updates (and server/API call)
* correct comment on cart item quantity reducer
* remove recieveCartItemQuantity - no longer needed
* remove delegation for deleted RECEIVE_CART_ITEM_QUANTITY
* only update quantity in component sideffect if it has changed:
- reduces unnecessary renders
* factor out debounced quantity update into cartItem hook (hat tip @senadir)
* use quantity from store, instead of passing in to hook +
+ fix latent bug in useStoreCartItem - the cartItem value is now object:
- was previously single-item array
- (note no client code is using this at present)
* tidy/refactor cart item hook - separate dispatch from select
* remove dud reset of item pending flag (came back in rebase)
* add quantity to StoreCartItem hook return value typedef
* fix js error when adding cart block in editor – cartItem not found
* fix typedef
* fix logic for debouncing
* don’t update quantity on server unnecessarily
Co-authored-by: Darren Ethier <darren@roughsmootheng.in>
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