chore(medusa): rm default created at field (#8213)

**What**
To maintain the backward compatibility, we use to populate `created_at` no matter what. But since we can break things from v1, I ll remove it as we moved the default ordering to the repository layer

integration-tests/api/__tests__/store/products.js

@@ -13,7 +13,7 @@ const adminSeeder = require("../../../helpers/admin-seeder")
 const {
   allowedStoreProductsFields,
   defaultStoreProductsRelations,
-} = require("@medusajs/medusa/dist")
+} = require("@medusajs/medusa")
 
 const adminHeaders = {
   headers: {

integration-tests/http/__tests__/product/store/product.spec.ts

@@ -706,15 +706,10 @@ medusaIntegrationTestRunner({
       // TODO: This doesn't work currently, but worked in v1
       it.skip("returns a list of ordered products by variants prices ASC", async () => {})
 
-      // BREAKING: It seems `id` and `created_at` is always returned, even if not in the fields params
       it("products contain only fields defined with `fields` param", async () => {
         const response = await api.get("/store/products?fields=handle")
         expect(response.status).toEqual(200)
-        expect(Object.keys(response.data.products[0])).toEqual([
+        expect(Object.keys(response.data.products[0])).toEqual(["handle", "id"])
-          "handle",
-          "created_at",
-          "id",
-        ])
       })
 
       it("returns a list of products in collection", async () => {

packages/medusa/src/api/utils/__tests__/validate-query.spec.ts

@@ -195,7 +195,7 @@ describe("validateAndTransformQuery", () => {
 
     expect(mockRequest.listConfig).toEqual(
       expect.objectContaining({
-        select: ["id", "created_at"],
+        select: ["id"],
       })
     )
 
@@ -406,13 +406,13 @@ describe("validateAndTransformQuery", () => {
 
     expect(mockRequest.listConfig).toEqual(
       expect.objectContaining({
-        select: ["store.name", "created_at", "id"],
+        select: ["store.name", "id"],
         relations: ["store"],
       })
     )
     expect(mockRequest.remoteQueryConfig).toEqual(
       expect.objectContaining({
-        fields: ["store.name", "created_at", "id"],
+        fields: ["store.name", "id"],
       })
     )
   })

packages/medusa/src/utils/get-query-config.ts

@@ -1,10 +1,11 @@
 import {
   getSetDifference,
+  isDefined,
   isPresent,
+  MedusaError,
   stringToSelectRelationObject,
 } from "@medusajs/utils"
 import { pick } from "lodash"
-import { MedusaError, isDefined } from "@medusajs/utils"
 import { RequestQueryFields } from "@medusajs/types"
 import { FindConfig, QueryConfig } from "../types/common"
 
@@ -76,10 +77,6 @@ export function prepareListQuery<T extends RequestQueryFields, TEntity>(
       })
     }
 
-    // TODO: Maintain backward compatibility, remove in future. the created at was only added in the list query for default order
-    if (queryConfig.isList) {
-      allFields.add("created_at")
-    }
     allFields.add("id")
   }