@jeremyckahn/farmhand/src/utils/isItemSoldInShop.ts

A farming game

import cowShopInventory from '../data/shop-inventory-cow.js'
import shopInventory from '../data/shop-inventory.js'

const purchasableItemMap = [...cowShopInventory, ...shopInventory].reduce(
  (acc: Record<string, farmhand.item>, item) => {
    acc[item.id] = item
    return acc
  },
  {}
)

export const isItemSoldInShop = ({ id }: farmhand.item): boolean =>
  Boolean(purchasableItemMap[id])