diff --git a/framework/bigcommerce/api/cart/handlers/get-cart.ts b/framework/bigcommerce/api/cart/handlers/get-cart.ts
index 9fb42d730..031bbb63f 100644
--- a/framework/bigcommerce/api/cart/handlers/get-cart.ts
+++ b/framework/bigcommerce/api/cart/handlers/get-cart.ts
@@ -1,6 +1,7 @@
+import type { BigcommerceCart } from '../../../types'
 import { BigcommerceApiError } from '../../utils/errors'
 import getCartCookie from '../../utils/get-cart-cookie'
-import type { Cart, CartHandlers } from '..'
+import type { CartHandlers } from '../'
 
 // Return current cart info
 const getCart: CartHandlers['getCart'] = async ({
@@ -8,7 +9,7 @@ const getCart: CartHandlers['getCart'] = async ({
   body: { cartId },
   config,
 }) => {
-  let result: { data?: Cart } = {}
+  let result: { data?: BigcommerceCart } = {}
 
   if (cartId) {
     try {
diff --git a/framework/bigcommerce/api/cart/handlers/update-item.ts b/framework/bigcommerce/api/cart/handlers/update-item.ts
index b0ccc710b..df9ccaee8 100644
--- a/framework/bigcommerce/api/cart/handlers/update-item.ts
+++ b/framework/bigcommerce/api/cart/handlers/update-item.ts
@@ -14,9 +14,6 @@ const updateItem: CartHandlers['updateItem'] = async ({
     })
   }
 
-  console.log('ITEM', item)
-  console.log('AFTER', parseCartItem(item))
-
   const { data } = await config.storeApiFetch(
     `/v3/carts/${cartId}/items/${itemId}`,
     {
diff --git a/framework/bigcommerce/api/cart/index.ts b/framework/bigcommerce/api/cart/index.ts
index 0f0365cc3..7b5be31c3 100644
--- a/framework/bigcommerce/api/cart/index.ts
+++ b/framework/bigcommerce/api/cart/index.ts
@@ -8,7 +8,11 @@ import getCart from './handlers/get-cart'
 import addItem from './handlers/add-item'
 import updateItem from './handlers/update-item'
 import removeItem from './handlers/remove-item'
-import type { Cart, UpdateCartItemHandlerBody } from '../../types'
+import type {
+  BigcommerceCart,
+  GetCartHandlerBody,
+  UpdateCartItemHandlerBody,
+} from '../../types'
 
 type OptionSelections = {
   option_id: Number
@@ -27,11 +31,14 @@ export type AddItemBody = { item: ItemBody }
 export type RemoveItemBody = { itemId: string }
 
 export type CartHandlers = {
-  getCart: BigcommerceHandler<Cart, { cartId?: string }>
-  addItem: BigcommerceHandler<Cart, { cartId?: string } & Partial<AddItemBody>>
-  updateItem: BigcommerceHandler<Cart, UpdateCartItemHandlerBody>
+  getCart: BigcommerceHandler<BigcommerceCart, GetCartHandlerBody>
+  addItem: BigcommerceHandler<
+    BigcommerceCart,
+    { cartId?: string } & Partial<AddItemBody>
+  >
+  updateItem: BigcommerceHandler<BigcommerceCart, UpdateCartItemHandlerBody>
   removeItem: BigcommerceHandler<
-    Cart,
+    BigcommerceCart,
     { cartId?: string } & Partial<RemoveItemBody>
   >
 }
diff --git a/framework/bigcommerce/cart/use-cart.tsx b/framework/bigcommerce/cart/use-cart.tsx
index 8e008c65a..afa37ec98 100644
--- a/framework/bigcommerce/cart/use-cart.tsx
+++ b/framework/bigcommerce/cart/use-cart.tsx
@@ -3,7 +3,7 @@ import type { SwrOptions } from '@commerce/utils/use-data'
 import useResponse from '@commerce/utils/use-response'
 import useCommerceCart, { CartInput } from '@commerce/cart/use-cart'
 import { normalizeCart } from '../lib/normalize'
-import type { Cart as BigcommerceCart } from '../api/cart'
+import type { Cart, BigcommerceCart } from '../types'
 
 const defaultOpts = {
   url: '/api/bigcommerce/cart',
diff --git a/framework/bigcommerce/cart/use-update-item.tsx b/framework/bigcommerce/cart/use-update-item.tsx
index 6592b090f..d1870c818 100644
--- a/framework/bigcommerce/cart/use-update-item.tsx
+++ b/framework/bigcommerce/cart/use-update-item.tsx
@@ -2,11 +2,12 @@ import { useCallback } from 'react'
 import debounce from 'lodash.debounce'
 import type { HookFetcher } from '@commerce/utils/types'
 import { ValidationError } from '@commerce/utils/errors'
-import useCartUpdateItem from '@commerce/cart/use-update-item'
+import useCartUpdateItem, {
+  UpdateItemInput as UseUpdateItemInput,
+} from '@commerce/cart/use-update-item'
 import { normalizeCart } from '../lib/normalize'
 import type {
   UpdateCartItemBody,
-  UpdateCartItemInput,
   Cart,
   BigcommerceCart,
   LineItem,
@@ -19,6 +20,10 @@ const defaultOpts = {
   method: 'PUT',
 }
 
+export type UpdateItemInput<T = any> = T extends LineItem
+  ? Partial<UseUpdateItemInput<LineItem>>
+  : UseUpdateItemInput<LineItem>
+
 export const fetcher: HookFetcher<Cart | null, UpdateCartItemBody> = async (
   options,
   { itemId, item },
@@ -55,31 +60,24 @@ function extendHook(customFetcher: typeof fetcher, cfg?: { wait?: number }) {
     )
 
     return useCallback(
-      debounce(
-        async (
-          input: T extends LineItem
-            ? Partial<UpdateCartItemInput>
-            : UpdateCartItemInput
-        ) => {
-          const itemId = input.id ?? item?.id
-          const productId = input.productId ?? item?.productId
-          const variantId = input.productId ?? item?.variantId
+      debounce(async (input: UpdateItemInput<T>) => {
+        const itemId = input.id ?? item?.id
+        const productId = input.productId ?? item?.productId
+        const variantId = input.productId ?? item?.variantId
 
-          if (!itemId || !productId || !variantId) {
-            throw new ValidationError({
-              message: 'Invalid input used for this operation',
-            })
-          }
-
-          const data = await fn({
-            itemId,
-            item: { productId, variantId, quantity: input.quantity },
+        if (!itemId || !productId || !variantId) {
+          throw new ValidationError({
+            message: 'Invalid input used for this operation',
           })
-          await mutate(data, false)
-          return data
-        },
-        cfg?.wait ?? 500
-      ),
+        }
+
+        const data = await fn({
+          itemId,
+          item: { productId, variantId, quantity: input.quantity },
+        })
+        await mutate(data, false)
+        return data
+      }, cfg?.wait ?? 500),
       [fn, mutate]
     )
   }
diff --git a/framework/bigcommerce/types.ts b/framework/bigcommerce/types.ts
index 766f2dbe9..26d093bfe 100644
--- a/framework/bigcommerce/types.ts
+++ b/framework/bigcommerce/types.ts
@@ -43,12 +43,10 @@ export interface CartItemBody extends Core.CartItemBody {
   optionSelections?: OptionSelections
 }
 
-export interface UpdateCartItemBody extends Core.UpdateCartItemBody {
-  item: CartItemBody
-}
+export interface GetCartHandlerBody extends Core.GetCartHandlerBody {}
 
-export interface UpdateCartItemInput
-  extends Core.UpdateCartItemInput<CartItemBody> {}
+export interface UpdateCartItemBody
+  extends Core.UpdateCartItemBody<CartItemBody> {}
 
 export interface UpdateCartItemHandlerBody
-  extends Core.UpdateCartItemHandlerBody {}
+  extends Core.UpdateCartItemHandlerBody<CartItemBody> {}
diff --git a/framework/commerce/cart/use-cart.tsx b/framework/commerce/cart/use-cart.tsx
index 94ccb73fc..0a7ba49ee 100644
--- a/framework/commerce/cart/use-cart.tsx
+++ b/framework/commerce/cart/use-cart.tsx
@@ -6,6 +6,7 @@ import { useCommerce } from '..'
 
 export type CartResponse<Data> = ResponseState<Data> & { isEmpty?: boolean }
 
+// Input expected by the `useCart` hook
 export type CartInput = {
   cartId?: Cart['id']
 }
diff --git a/framework/commerce/cart/use-update-item.tsx b/framework/commerce/cart/use-update-item.tsx
index 1c6261054..e1adcb5fb 100644
--- a/framework/commerce/cart/use-update-item.tsx
+++ b/framework/commerce/cart/use-update-item.tsx
@@ -1,4 +1,10 @@
 import useAction from '../utils/use-action'
+import type { CartItemBody } from '../types'
+
+// Input expected by the action returned by the `useUpdateItem` hook
+export type UpdateItemInput<T extends CartItemBody> = T & {
+  id: string
+}
 
 const useUpdateItem = useAction
 
diff --git a/framework/commerce/types.ts b/framework/commerce/types.ts
index c662077a1..61bf0d5e7 100644
--- a/framework/commerce/types.ts
+++ b/framework/commerce/types.ts
@@ -94,18 +94,19 @@ export interface CartItemBody {
   quantity?: number
 }
 
-// Body by the update operation
-export interface UpdateCartItemBody {
-  itemId: string
-  item: CartItemBody
+// Body used by the `getCart` operation handler
+export interface GetCartHandlerBody {
+  cartId?: string
 }
 
-// Input expected by the `useUpdateItem` hook
-export type UpdateCartItemInput<T extends CartItemBody> = T & {
-  id: string
+// Body used by the update operation
+export interface UpdateCartItemBody<T extends CartItemBody> {
+  itemId: string
+  item: T
 }
 
 // Body expected by the update operation handler
-export interface UpdateCartItemHandlerBody extends Partial<UpdateCartItemBody> {
+export interface UpdateCartItemHandlerBody<T extends CartItemBody>
+  extends Partial<UpdateCartItemBody<T>> {
   cartId?: string
 }