Removed no longer required cart mock

lib/bigcommerce/cart/index.tsx

@@ -18,6 +18,8 @@ export const CartProvider: FC = ({ children }) => {
 export function useCart() {
   const cart = useCommerceCart<Cart>()
 
+  // Uses a getter to only calculate the prop when required
+  // cart.data is also a getter and it's better to not trigger it early
   Object.defineProperty(cart, 'isEmpty', {
     get() {
       return Object.values(cart.data?.line_items ?? {}).every(

lib/cart.js

@@ -1,105 +0,0 @@
-import { useState, useCallback } from 'react'
-import useSWR, { mutate } from 'swr'
-
-async function getText(res) {
-  try {
-    return (await res.text()) || res.statusText
-  } catch (error) {
-    return res.statusText
-  }
-}
-
-async function getError(res) {
-  if (res.headers.get('Content-Type')?.includes('application/json')) {
-    const data = await res.json()
-    return data.errors[0]
-  }
-  return { message: await getText(res) }
-}
-
-async function fetcher(url) {
-  const res = await fetch(url)
-
-  if (res.status === 200) {
-    return res.json()
-  }
-  throw await getError(res)
-}
-
-export function useCart() {
-  return useSWR('/api/cart', fetcher)
-}
-
-export function useAddToCart() {
-  const [{ addingToCart, error }, setStatus] = useState({
-    addingToCart: false,
-  })
-  const addToCart = useCallback(async ({ product }) => {
-    setStatus({ addingToCart: true })
-
-    const res = await fetch('/api/cart', {
-      method: 'POST',
-      headers: {
-        'Content-Type': 'application/json',
-      },
-      body: JSON.stringify({ product }),
-    })
-
-    // Product added as expected
-    if (res.status === 200) {
-      setStatus({ addingToCart: false })
-      return mutate('/api/cart')
-    }
-
-    const error = await getError(res)
-
-    console.error('Adding product to cart failed with:', res.status, error)
-    setStatus({ addingToCart: false, error })
-  }, [])
-
-  return { addToCart, addingToCart, error }
-}
-
-export function useUpdateCart() {
-  const [{ updatingCart, error }, setStatus] = useState({
-    updatingCart: false,
-  })
-  const updateCart = useCallback(async ({ product, item }) => {
-    setStatus({ updatingCart: true })
-
-    const res = await fetch(
-      `/api/cart?itemId=${item.id}`,
-      product.quantity < 1
-        ? { method: 'DELETE' }
-        : {
-            method: 'PUT',
-            headers: {
-              'Content-Type': 'application/json',
-            },
-            body: JSON.stringify({ product }),
-          }
-    )
-
-    // Product updated as expected
-    if (res.status === 200) {
-      setStatus({ updatingCart: false })
-      return mutate('/api/cart')
-    }
-
-    const error = await getError(res)
-
-    console.error('Update to cart failed with:', res.status, error)
-    setStatus({ updatingCart: false, error })
-  }, [])
-
-  return { updateCart, updatingCart, error }
-}
-
-export function useRemoveFromCart() {
-  const { updateCart, updatingCart, error } = useUpdateCart()
-  const removeFromCart = async ({ item }) => {
-    updateCart({ item, product: { quantity: 0 } })
-  }
-
-  return { removeFromCart, removingFromCart: updatingCart, error }
-}