Update Vendure provider to latest API changes (#352)

Relates to #349

framework/vendure/cart/use-update-item.tsx

@@ -1,20 +1,24 @@
 import { useCallback } from 'react'
-import { HookFetcherContext, MutationHookContext } from '@commerce/utils/types'
+import {
+  HookFetcherContext,
+  MutationHook,
+  MutationHookContext,
+} from '@commerce/utils/types'
 import { CommerceError, ValidationError } from '@commerce/utils/errors'
 import useUpdateItem, { UseUpdateItem } from '@commerce/cart/use-update-item'
-import {
-  Cart,
-  CartItemBody,
-  LineItem,
-  UpdateCartItemBody,
-} from '@commerce/types'
+import { CartItemBody, LineItem } from '@commerce/types/cart'
 import useCart from './use-cart'
 import {
   AdjustOrderLineMutation,
   AdjustOrderLineMutationVariables,
 } from '../schema'
-import { normalizeCart } from '../lib/normalize'
-import { adjustOrderLineMutation } from '../lib/mutations/adjust-order-line-mutation'
+import { normalizeCart } from '../utils/normalize'
+import { adjustOrderLineMutation } from '../utils/mutations/adjust-order-line-mutation'
+import { UpdateItemHook } from '../types/cart'
+
+export type UpdateItemActionInput<T = any> = T extends LineItem
+  ? Partial<UpdateItemHook['actionInput']>
+  : UpdateItemHook['actionInput']
 
 export default useUpdateItem as UseUpdateItem<typeof handler>
 
@@ -22,7 +26,7 @@ export const handler = {
   fetchOptions: {
     query: adjustOrderLineMutation,
   },
-  async fetcher(context: HookFetcherContext<UpdateCartItemBody<CartItemBody>>) {
+  async fetcher(context: HookFetcherContext<UpdateItemHook>) {
     const { input, options, fetch } = context
     const variables: AdjustOrderLineMutationVariables = {
       quantity: input.item.quantity || 1,
@@ -38,9 +42,7 @@ export const handler = {
     }
     throw new CommerceError(adjustOrderLine)
   },
-  useHook: ({
-    fetch,
-  }: MutationHookContext<Cart | null, UpdateCartItemBody<CartItemBody>>) => (
+  useHook: ({ fetch }: MutationHookContext<UpdateItemHook>) => (
     ctx: {
       item?: LineItem
       wait?: number
@@ -50,7 +52,7 @@ export const handler = {
     const { mutate } = useCart()
 
     return useCallback(
-      async function addItem(input: Partial<CartItemBody>) {
+      async function addItem(input: UpdateItemActionInput) {
         const itemId = item?.id
         const productId = input.productId ?? item?.productId
         const variantId = input.productId ?? item?.variantId