Deprecated.
This function will continue to work, but a newer version is available at
wix-ecom-backend.currentCart.updateCurrentCartLineItemQuantity().
If this function is already in your code, it will continue to work.
To stay compatible with future changes, migrate to
wix-ecom-backend.currentCart.updateCurrentCartLineItemQuantity().
To migrate to the new function:
Add the new import statement:
Look for any code that uses cart.updateLineItemQuantity(),
and replace it with currentCart.updateCurrentCartLineItemQuantity().
Update your code to work with the new currentCart.updateCurrentCartLineItemQuantity()
call and response properties.
Updates the quantity of a specified line item in the cart.
The updateLineItemQuantity() function returns a Promise that resolves to the current
site visitor's cart when the specified line item's quantity has been updated.
Note: When editing a site as a contributor, updateLineItemQuantity() will only work when viewing the live site.
ID of the cart line item to update.
Line item's new quantity.