feat(inventory-next, types): inventory module conversion (#6596)

* init * create new interface * prep integration tests * update denpencies * inventory service partial tests * finalize integration tests * add events * align events * adjust inventory level reservation levels * add test validating reserved quantity after reseration item update * fix nits * rename to inventory-next * update yarn.lock * remove changelog * remove fixtures * remove unused files * ready for review * Update packages/inventory-next/package.json Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com> * pr feedback * add tests and docs for partition-array util * remote decorators from private method * fix unit tests * add migrations * add foreign keys * fix build --------- Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>
2024-03-08 14:09:05 +01:00
parent 8406eb5a35
commit c19d276458
46 changed files with 4896 additions and 14 deletions
--- a/packages/inventory-next/.gitignore
+++ b/packages/inventory-next/.gitignore
@@ -0,0 +1,6 @@
+/dist
+node_modules
+.DS_store
+.env*
+.env
+*.sql
--- a/packages/inventory-next/integration-tests/tests/inventory-module-service.spec.ts
+++ b/packages/inventory-next/integration-tests/tests/inventory-module-service.spec.ts
@@ -0,0 +1,873 @@
+import { IInventoryServiceNext, InventoryItemDTO } from "@medusajs/types"
+import { SuiteOptions, moduleIntegrationTestRunner } from "medusa-test-utils"
+
+import { Modules } from "@medusajs/modules-sdk"
+
+jest.setTimeout(100000)
+
+moduleIntegrationTestRunner({
+  moduleName: Modules.INVENTORY,
+  resolve: "@medusajs/inventory-next",
+  testSuite: ({
+    MikroOrmWrapper,
+    service,
+  }: SuiteOptions<IInventoryServiceNext>) => {
+    describe("Inventory Module Service", () => {
+      describe("create", () => {
+        it("should create an inventory item", async () => {
+          const data = { sku: "test-sku", origin_country: "test-country" }
+          const inventoryItem = await service.create(data)
+
+          expect(inventoryItem).toEqual(
+            expect.objectContaining({ id: expect.any(String), ...data })
+          )
+        })
+
+        it("should create inventory items from array", async () => {
+          const data = [
+            { sku: "test-sku", origin_country: "test-country" },
+            { sku: "test-sku-1", origin_country: "test-country-1" },
+          ]
+          const inventoryItems = await service.create(data)
+
+          expect(inventoryItems).toEqual([
+            expect.objectContaining({ id: expect.any(String), ...data[0] }),
+            expect.objectContaining({ id: expect.any(String), ...data[1] }),
+          ])
+        })
+      })
+
+      describe("createReservationItem", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 2,
+            },
+          ])
+        })
+
+        it("should create a reservationItem", async () => {
+          const data = {
+            inventory_item_id: inventoryItem.id,
+            location_id: "location-1",
+            quantity: 2,
+          }
+
+          const reservationItem = await service.createReservationItems(data)
+
+          expect(reservationItem).toEqual(
+            expect.objectContaining({ id: expect.any(String), ...data })
+          )
+        })
+
+        it("should create adjust reserved_quantity of inventory level after creation", async () => {
+          await service.createReservationItems({
+            inventory_item_id: inventoryItem.id,
+            location_id: "location-1",
+            quantity: 2,
+          })
+
+          const inventoryLevel =
+            await service.retrieveInventoryLevelByItemAndLocation(
+              inventoryItem.id,
+              "location-1"
+            )
+
+          expect(inventoryLevel.reserved_quantity).toEqual(2)
+        })
+
+        it("should create reservationItems from array", async () => {
+          const data = [
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              quantity: 3,
+            },
+          ]
+          const reservationItems = await service.createReservationItems(data)
+
+          expect(reservationItems).toEqual([
+            expect.objectContaining({ id: expect.any(String), ...data[0] }),
+            expect.objectContaining({ id: expect.any(String), ...data[1] }),
+          ])
+        })
+
+        it("should fail to create a reservationItem for a non-existing location", async () => {
+          const data = [
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-3",
+              quantity: 2,
+            },
+          ]
+
+          const err = await service
+            .createReservationItems(data)
+            .catch((error) => error)
+
+          expect(err.message).toEqual(
+            `Item ${inventoryItem.id} is not stocked at location location-3`
+          )
+        })
+      })
+
+      describe("createInventoryLevel", () => {
+        let inventoryItem: InventoryItemDTO
+
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+        })
+
+        it("should create an inventoryLevel", async () => {
+          const data = {
+            inventory_item_id: inventoryItem.id,
+            location_id: "location-1",
+            stocked_quantity: 2,
+          }
+
+          const inventoryLevel = await service.createInventoryLevels(data)
+
+          expect(inventoryLevel).toEqual(
+            expect.objectContaining({ id: expect.any(String), ...data })
+          )
+        })
+
+        it("should create inventoryLevels from array", async () => {
+          const data = [
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 3,
+            },
+          ]
+          const inventoryLevels = await service.createInventoryLevels(data)
+
+          expect(inventoryLevels).toEqual([
+            expect.objectContaining({ id: expect.any(String), ...data[0] }),
+            expect.objectContaining({ id: expect.any(String), ...data[1] }),
+          ])
+        })
+      })
+
+      describe("update", () => {
+        let inventoryItem: InventoryItemDTO
+
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+        })
+
+        it("should update the inventory item", async () => {
+          const update = {
+            id: inventoryItem.id,
+            sku: "updated-sku",
+          }
+          const updated = await service.update(update)
+
+          expect(updated).toEqual(expect.objectContaining(update))
+        })
+
+        it("should update multiple inventory items", async () => {
+          const item2 = await service.create({
+            sku: "test-sku-1",
+          })
+
+          const updates = [
+            {
+              id: inventoryItem.id,
+              sku: "updated-sku",
+            },
+            {
+              id: item2.id,
+              sku: "updated-sku-2",
+            },
+          ]
+          const updated = await service.update(updates)
+
+          expect(updated).toEqual([
+            expect.objectContaining(updates[0]),
+            expect.objectContaining(updates[1]),
+          ])
+        })
+      })
+
+      describe("updateInventoryLevels", () => {
+        let inventoryLevel
+        let inventoryItem
+
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+
+          const data = {
+            inventory_item_id: inventoryItem.id,
+            location_id: "location-1",
+            stocked_quantity: 2,
+          }
+
+          inventoryLevel = await service.createInventoryLevels(data)
+        })
+
+        it("should update inventory level", async () => {
+          const updatedLevel = await service.updateInventoryLevels({
+            location_id: "location-1",
+            inventory_item_id: inventoryItem.id,
+            incoming_quantity: 4,
+          })
+
+          expect(updatedLevel.incoming_quantity).toEqual(4)
+        })
+
+        it("should fail to update inventory level for item in location that isn't stocked", async () => {
+          const error = await service
+            .updateInventoryLevels({
+              inventory_item_id: inventoryItem.id,
+              location_id: "does-not-exist",
+              stocked_quantity: 10,
+            })
+            .catch((error) => error)
+
+          expect(error.message).toEqual(
+            `Item ${inventoryItem.id} is not stocked at location does-not-exist`
+          )
+        })
+      })
+
+      describe("updateReservationItems", () => {
+        let reservationItem
+        beforeEach(async () => {
+          const inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 2,
+            },
+          ])
+
+          reservationItem = await service.createReservationItems({
+            inventory_item_id: inventoryItem.id,
+            location_id: "location-1",
+            quantity: 2,
+          })
+        })
+
+        it("should update a reservationItem", async () => {
+          const update = {
+            id: reservationItem.id,
+            quantity: 5,
+          }
+
+          const updated = await service.updateReservationItems(update)
+
+          expect(updated).toEqual(expect.objectContaining(update))
+        })
+
+        it("should adjust reserved_quantity of inventory level after updates increasing reserved quantity", async () => {
+          const update = {
+            id: reservationItem.id,
+            quantity: 5,
+          }
+
+          await service.updateReservationItems(update)
+
+          const inventoryLevel =
+            await service.retrieveInventoryLevelByItemAndLocation(
+              reservationItem.inventory_item_id,
+              "location-1"
+            )
+
+          expect(inventoryLevel.reserved_quantity).toEqual(update.quantity)
+        })
+
+        it("should adjust reserved_quantity of inventory level after updates decreasing reserved quantity", async () => {
+          const update = {
+            id: reservationItem.id,
+            quantity: 1,
+          }
+
+          await service.updateReservationItems(update)
+
+          const inventoryLevel =
+            await service.retrieveInventoryLevelByItemAndLocation(
+              reservationItem.inventory_item_id,
+              "location-1"
+            )
+
+          expect(inventoryLevel.reserved_quantity).toEqual(update.quantity)
+        })
+      })
+
+      describe("deleteReservationItemsByLineItem", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 2,
+            },
+          ])
+
+          await service.createReservationItems([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              quantity: 2,
+              line_item_id: "line-item-id",
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              quantity: 2,
+              line_item_id: "line-item-id",
+            },
+          ])
+        })
+
+        it("deleted reseravation items by line item", async () => {
+          const reservationsPreDeleted = await service.listReservationItems({
+            line_item_id: "line-item-id",
+          })
+
+          expect(reservationsPreDeleted).toEqual([
+            expect.objectContaining({
+              location_id: "location-1",
+              quantity: 2,
+              line_item_id: "line-item-id",
+            }),
+            expect.objectContaining({
+              location_id: "location-1",
+              quantity: 2,
+              line_item_id: "line-item-id",
+            }),
+          ])
+
+          await service.deleteReservationItemsByLineItem("line-item-id")
+
+          const reservationsPostDeleted = await service.listReservationItems({
+            line_item_id: "line-item-id",
+          })
+
+          expect(reservationsPostDeleted).toEqual([])
+        })
+
+        it("adjusts inventory levels accordingly when removing reservations by line item", async () => {
+          await service.deleteReservationItemsByLineItem("line-item-id")
+
+          const inventoryLevel =
+            await service.retrieveInventoryLevelByItemAndLocation(
+              inventoryItem.id,
+              "location-1"
+            )
+
+          expect(inventoryLevel).toEqual(
+            expect.objectContaining({ reserved_quantity: 2 })
+          )
+        })
+      })
+
+      describe("deleteReservationItemByLocationId", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 2,
+            },
+          ])
+
+          await service.createReservationItems([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              quantity: 2,
+              line_item_id: "line-item-id",
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              quantity: 2,
+              line_item_id: "line-item-id",
+            },
+          ])
+        })
+
+        it("deleted reservation items by line item", async () => {
+          const reservationsPreDeleted = await service.listReservationItems({
+            location_id: "location-1",
+          })
+
+          expect(reservationsPreDeleted).toEqual([
+            expect.objectContaining({
+              location_id: "location-1",
+              quantity: 2,
+            }),
+            expect.objectContaining({
+              location_id: "location-1",
+              quantity: 2,
+            }),
+          ])
+
+          await service.deleteReservationItemByLocationId("location-1")
+
+          const reservationsPostDeleted = await service.listReservationItems({
+            location_id: "location-1",
+          })
+
+          expect(reservationsPostDeleted).toEqual([])
+        })
+
+        it("adjusts inventory levels accordingly when removing reservations by line item", async () => {
+          const inventoryLevelPreDelete =
+            await service.retrieveInventoryLevelByItemAndLocation(
+              inventoryItem.id,
+              "location-1"
+            )
+
+          expect(inventoryLevelPreDelete).toEqual(
+            expect.objectContaining({ reserved_quantity: 4 })
+          )
+
+          await service.deleteReservationItemByLocationId("location-1")
+
+          const inventoryLevel =
+            await service.retrieveInventoryLevelByItemAndLocation(
+              inventoryItem.id,
+              "location-1"
+            )
+
+          expect(inventoryLevel).toEqual(
+            expect.objectContaining({ reserved_quantity: 0 })
+          )
+        })
+      })
+
+      describe("deleteInventoryItemLevelByLocationId", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 2,
+              reserved_quantity: 6,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 2,
+            },
+          ])
+        })
+
+        it("should remove inventory levels with given location id", async () => {
+          const inventoryLevelsPreDeletion = await service.listInventoryLevels(
+            {}
+          )
+
+          expect(inventoryLevelsPreDeletion).toEqual(
+            expect.arrayContaining([
+              expect.objectContaining({
+                stocked_quantity: 2,
+                location_id: "location-1",
+              }),
+              expect.objectContaining({
+                stocked_quantity: 2,
+                location_id: "location-2",
+              }),
+            ])
+          )
+
+          await service.deleteInventoryItemLevelByLocationId("location-1")
+
+          const inventoryLevelsPostDeletion = await service.listInventoryLevels(
+            {}
+          )
+
+          expect(inventoryLevelsPostDeletion).toEqual([
+            expect.objectContaining({
+              stocked_quantity: 2,
+              location_id: "location-2",
+            }),
+          ])
+        })
+      })
+
+      describe("deleteInventoryLevel", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 2,
+            },
+          ])
+        })
+
+        it("should remove inventory levels with given location id", async () => {
+          const inventoryLevelsPreDeletion = await service.listInventoryLevels(
+            {}
+          )
+
+          expect(inventoryLevelsPreDeletion).toEqual([
+            expect.objectContaining({
+              stocked_quantity: 2,
+              location_id: "location-1",
+            }),
+          ])
+
+          await service.deleteInventoryLevel(inventoryItem.id, "location-1")
+
+          const inventoryLevelsPostDeletion = await service.listInventoryLevels(
+            {}
+          )
+
+          expect(inventoryLevelsPostDeletion).toEqual([])
+        })
+      })
+
+      describe("adjustInventory", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 2,
+            },
+          ])
+        })
+
+        it("should updated inventory level stocked_quantity by quantity", async () => {
+          const updatedLevel = await service.adjustInventory(
+            inventoryItem.id,
+            "location-1",
+            2
+          )
+          expect(updatedLevel.stocked_quantity).toEqual(4)
+        })
+
+        it("should updated inventory level stocked_quantity by negative quantity", async () => {
+          const updatedLevel = await service.adjustInventory(
+            inventoryItem.id,
+            "location-1",
+            -1
+          )
+          expect(updatedLevel.stocked_quantity).toEqual(1!)
+        })
+      })
+
+      describe("retrieveInventoryLevelByItemAndLocation", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+          const inventoryItem1 = await service.create({
+            sku: "test-sku-1",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 3,
+            },
+            {
+              inventory_item_id: inventoryItem1.id,
+              location_id: "location-1",
+              stocked_quantity: 3,
+            },
+          ])
+        })
+
+        it("should retrieve inventory level with provided location_id and inventory_item", async () => {
+          const level = await service.retrieveInventoryLevelByItemAndLocation(
+            inventoryItem.id,
+            "location-1"
+          )
+          expect(level.stocked_quantity).toEqual(2)
+        })
+      })
+
+      describe("retrieveAvailableQuantity", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+          const inventoryItem1 = await service.create({
+            sku: "test-sku-1",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 4,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 4,
+              reserved_quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem1.id,
+              location_id: "location-1",
+              stocked_quantity: 3,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-3",
+              stocked_quantity: 3,
+            },
+          ])
+        })
+
+        it("should calculate current stocked quantity across locations", async () => {
+          const level = await service.retrieveAvailableQuantity(
+            inventoryItem.id,
+            ["location-1", "location-2"]
+          )
+          expect(level).toEqual(6)
+        })
+      })
+
+      describe("retrieveStockedQuantity", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+          const inventoryItem1 = await service.create({
+            sku: "test-sku-1",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 4,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 4,
+              reserved_quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem1.id,
+              location_id: "location-1",
+              stocked_quantity: 3,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-3",
+              stocked_quantity: 3,
+            },
+          ])
+        })
+
+        it("retrieves stocked location", async () => {
+          const stockedQuantity = await service.retrieveStockedQuantity(
+            inventoryItem.id,
+            ["location-1", "location-2"]
+          )
+
+          expect(stockedQuantity).toEqual(8)
+        })
+      })
+      describe("retrieveReservedQuantity", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+          const inventoryItem1 = await service.create({
+            sku: "test-sku-1",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 4,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 4,
+              reserved_quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem1.id,
+              location_id: "location-1",
+              stocked_quantity: 3,
+              reserved_quantity: 2,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-3",
+              stocked_quantity: 3,
+              reserved_quantity: 2,
+            },
+          ])
+        })
+
+        it("retrieves reserved quantity", async () => {
+          const reservedQuantity = await service.retrieveReservedQuantity(
+            inventoryItem.id,
+            ["location-1", "location-2"]
+          )
+
+          expect(reservedQuantity).toEqual(2)
+        })
+      })
+
+      describe("confirmInventory", () => {
+        let inventoryItem: InventoryItemDTO
+        beforeEach(async () => {
+          inventoryItem = await service.create({
+            sku: "test-sku",
+            origin_country: "test-country",
+          })
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-1",
+              stocked_quantity: 4,
+            },
+            {
+              inventory_item_id: inventoryItem.id,
+              location_id: "location-2",
+              stocked_quantity: 4,
+              reserved_quantity: 2,
+            },
+          ])
+        })
+
+        it("should return true if quantity is less than or equal to available quantity", async () => {
+          const reservedQuantity = await service.confirmInventory(
+            inventoryItem.id,
+            "location-1",
+            2
+          )
+
+          expect(reservedQuantity).toBeTruthy()
+        })
+
+        it("should return true if quantity is more than available quantity", async () => {
+          const reservedQuantity = await service.confirmInventory(
+            inventoryItem.id,
+            "location-1",
+            3
+          )
+
+          expect(reservedQuantity).toBeTruthy()
+        })
+      })
+    })
+  },
+})
--- a/packages/inventory-next/jest.config.js
+++ b/packages/inventory-next/jest.config.js
@@ -0,0 +1,13 @@
+module.exports = {
+  transform: {
+    "^.+\\.[jt]s?$": [
+      "ts-jest",
+      {
+        tsConfig: "tsconfig.json",
+        isolatedModules: true,
+      },
+    ],
+  },
+  testEnvironment: `node`,
+  moduleFileExtensions: [`js`, `ts`],
+}
--- a/packages/inventory-next/mikro-orm.config.dev.ts
+++ b/packages/inventory-next/mikro-orm.config.dev.ts
@@ -0,0 +1,13 @@
+import * as entities from "./src/models"
+
+import { TSMigrationGenerator } from "@medusajs/utils"
+
+module.exports = {
+  entities: Object.values(entities),
+  schema: "public",
+  clientUrl: "postgres://postgres@localhost/medusa-inventory",
+  type: "postgresql",
+  migrations: {
+    generator: TSMigrationGenerator,
+  },
+}
--- a/packages/inventory-next/package.json
+++ b/packages/inventory-next/package.json
@@ -0,0 +1,58 @@
+{
+  "name": "@medusajs/inventory-next",
+  "version": "0.0.1",
+  "description": "Inventory Module for Medusa",
+  "main": "dist/index.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/medusajs/medusa",
+    "directory": "packages/inventory-next"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "files": [
+    "dist"
+  ],
+  "engines": {
+    "node": ">=16"
+  },
+  "author": "Medusa",
+  "license": "MIT",
+  "devDependencies": {
+    "@medusajs/types": "^1.11.12",
+    "@mikro-orm/cli": "5.9.7",
+    "cross-env": "^5.2.1",
+    "jest": "^29.6.3",
+    "medusa-test-utils": "^1.1.40",
+    "rimraf": "^5.0.1",
+    "ts-jest": "^29.1.1",
+    "ts-node": "^10.9.1",
+    "tsc-alias": "^1.8.6",
+    "typescript": "^5.1.6"
+  },
+  "dependencies": {
+    "@medusajs/modules-sdk": "^1.12.4",
+    "@medusajs/types": "^1.11.8",
+    "@medusajs/utils": "^1.11.1",
+    "@mikro-orm/core": "5.9.7",
+    "@mikro-orm/migrations": "5.9.7",
+    "@mikro-orm/postgresql": "5.9.7",
+    "awilix": "^8.0.0",
+    "dotenv": "16.4.5",
+    "knex": "2.4.2"
+  },
+  "scripts": {
+    "watch": "tsc --build --watch",
+    "watch:test": "tsc --build tsconfig.spec.json --watch",
+    "prepublishOnly": "cross-env NODE_ENV=production tsc --build && tsc-alias -p tsconfig.json",
+    "build": "rimraf dist && tsc --build && tsc-alias -p tsconfig.json",
+    "test": "jest --runInBand --bail --forceExit -- src/**/__tests__/**/*.ts",
+    "test:integration": "jest --runInBand --forceExit -- integration-tests/**/__tests__/**/*.spec.ts",
+    "migration:generate": " MIKRO_ORM_CLI=./mikro-orm.config.dev.ts mikro-orm migration:generate",
+    "migration:initial": " MIKRO_ORM_CLI=./mikro-orm.config.dev.ts mikro-orm migration:create --initial -n InitialSetupMigration",
+    "migration:create": " MIKRO_ORM_CLI=./mikro-orm.config.dev.ts mikro-orm migration:create",
+    "migration:up": " MIKRO_ORM_CLI=./mikro-orm.config.dev.ts mikro-orm migration:up",
+    "orm:cache:clear": " MIKRO_ORM_CLI=./mikro-orm.config.dev.ts mikro-orm cache:clear"
+  }
+}
--- a/packages/inventory-next/src/index.ts
+++ b/packages/inventory-next/src/index.ts
@@ -0,0 +1,14 @@
+import { Modules, initializeFactory } from "@medusajs/modules-sdk"
+
+import { moduleDefinition } from "./module-definition"
+
+export * from "./models"
+export * from "./services"
+
+export const initialize = initializeFactory({
+  moduleName: Modules.INVENTORY,
+  moduleDefinition,
+})
+export const runMigrations = moduleDefinition.runMigrations
+export const revertMigration = moduleDefinition.revertMigration
+export default moduleDefinition
--- a/packages/inventory-next/src/joiner-config.ts
+++ b/packages/inventory-next/src/joiner-config.ts
@@ -0,0 +1,60 @@
+import { InventoryItem, InventoryLevel, ReservationItem } from "./models"
+
+import { MapToConfig } from "@medusajs/utils"
+import { ModuleJoinerConfig } from "@medusajs/types"
+import { Modules } from "@medusajs/modules-sdk"
+import moduleSchema from "./schema"
+
+export const LinkableKeys = {
+  inventory_item_id: InventoryItem.name,
+  inventory_level_id: InventoryLevel.name,
+  reservation_item_id: ReservationItem.name,
+}
+
+const entityLinkableKeysMap: MapToConfig = {}
+Object.entries(LinkableKeys).forEach(([key, value]) => {
+  entityLinkableKeysMap[value] ??= []
+  entityLinkableKeysMap[value].push({
+    mapTo: key,
+    valueFrom: key.split("_").pop()!,
+  })
+})
+export const entityNameToLinkableKeysMap: MapToConfig = entityLinkableKeysMap
+
+export const joinerConfig: ModuleJoinerConfig = {
+  serviceName: Modules.INVENTORY,
+  primaryKeys: ["id"],
+  linkableKeys: {
+    inventory_item_id: InventoryItem.name,
+    inventory_level_id: InventoryLevel.name,
+    reservation_item_id: ReservationItem.name,
+  },
+  schema: moduleSchema,
+  alias: [
+    {
+      name: ["inventory_items", "inventory"],
+      args: {
+        entity: "InventoryItem",
+      },
+    },
+    {
+      name: ["inventory_level", "inventory_levels"],
+      args: {
+        entity: "InventoryLevel",
+        methodSuffix: "InventoryLevels",
+      },
+    },
+    {
+      name: [
+        "reservation",
+        "reservations",
+        "reservation_item",
+        "reservation_items",
+      ],
+      args: {
+        entity: "ReservationItem",
+        methodSuffix: "ReservationItems",
+      },
+    },
+  ],
+}
--- a/packages/inventory-next/src/migrations/.snapshot-medusa-inventory.json
+++ b/packages/inventory-next/src/migrations/.snapshot-medusa-inventory.json
@@ -0,0 +1,570 @@
+{
+  "namespaces": [
+    "public"
+  ],
+  "name": "public",
+  "tables": [
+    {
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "length": 6,
+          "default": "now()",
+          "mappedType": "datetime"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "length": 6,
+          "default": "now()",
+          "mappedType": "datetime"
+        },
+        "deleted_at": {
+          "name": "deleted_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "length": 6,
+          "mappedType": "datetime"
+        },
+        "sku": {
+          "name": "sku",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "origin_country": {
+          "name": "origin_country",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "hs_code": {
+          "name": "hs_code",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "mid_code": {
+          "name": "mid_code",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "material": {
+          "name": "material",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "weight": {
+          "name": "weight",
+          "type": "int",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "integer"
+        },
+        "length": {
+          "name": "length",
+          "type": "int",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "integer"
+        },
+        "height": {
+          "name": "height",
+          "type": "int",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "integer"
+        },
+        "width": {
+          "name": "width",
+          "type": "int",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "integer"
+        },
+        "requires_shipping": {
+          "name": "requires_shipping",
+          "type": "boolean",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "default": "true",
+          "mappedType": "boolean"
+        },
+        "description": {
+          "name": "description",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "title": {
+          "name": "title",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "thumbnail": {
+          "name": "thumbnail",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "metadata": {
+          "name": "metadata",
+          "type": "jsonb",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "json"
+        }
+      },
+      "name": "inventory_item",
+      "schema": "public",
+      "indexes": [
+        {
+          "keyName": "IDX_inventory_item_deleted_at",
+          "columnNames": [
+            "deleted_at"
+          ],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE INDEX IF NOT EXISTS \"IDX_inventory_item_deleted_at\" ON \"inventory_item\" (deleted_at) WHERE deleted_at IS NOT NULL"
+        },
+        {
+          "keyName": "IDX_inventory_item_sku_unique",
+          "columnNames": [
+            "sku"
+          ],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE UNIQUE INDEX IF NOT EXISTS \"IDX_inventory_item_sku_unique\" ON \"inventory_item\" (sku)"
+        },
+        {
+          "keyName": "inventory_item_pkey",
+          "columnNames": [
+            "id"
+          ],
+          "composite": false,
+          "primary": true,
+          "unique": true
+        }
+      ],
+      "checks": [],
+      "foreignKeys": {}
+    },
+    {
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "length": 6,
+          "default": "now()",
+          "mappedType": "datetime"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "length": 6,
+          "default": "now()",
+          "mappedType": "datetime"
+        },
+        "deleted_at": {
+          "name": "deleted_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "length": 6,
+          "mappedType": "datetime"
+        },
+        "inventory_item_id": {
+          "name": "inventory_item_id",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        },
+        "location_id": {
+          "name": "location_id",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        },
+        "stocked_quantity": {
+          "name": "stocked_quantity",
+          "type": "int",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "default": "0",
+          "mappedType": "integer"
+        },
+        "reserved_quantity": {
+          "name": "reserved_quantity",
+          "type": "int",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "default": "0",
+          "mappedType": "integer"
+        },
+        "incoming_quantity": {
+          "name": "incoming_quantity",
+          "type": "int",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "default": "0",
+          "mappedType": "integer"
+        },
+        "metadata": {
+          "name": "metadata",
+          "type": "jsonb",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "json"
+        }
+      },
+      "name": "inventory_level",
+      "schema": "public",
+      "indexes": [
+        {
+          "keyName": "IDX_inventory_level_deleted_at",
+          "columnNames": [
+            "deleted_at"
+          ],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE INDEX IF NOT EXISTS \"IDX_inventory_level_deleted_at\" ON \"inventory_level\" (deleted_at) WHERE deleted_at IS NOT NULL"
+        },
+        {
+          "keyName": "IDX_inventory_level_inventory_item_id",
+          "columnNames": [
+            "inventory_item_id"
+          ],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE INDEX IF NOT EXISTS \"IDX_inventory_level_inventory_item_id\" ON \"inventory_level\" (inventory_item_id)"
+        },
+        {
+          "keyName": "IDX_inventory_level_location_id",
+          "columnNames": [
+            "location_id"
+          ],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE INDEX IF NOT EXISTS \"IDX_inventory_level_location_id\" ON \"inventory_level\" (location_id)"
+        },
+        {
+          "keyName": "IDX_inventory_level_location_id",
+          "columnNames": [],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE INDEX IF NOT EXISTS \"IDX_inventory_level_location_id\" ON \"inventory_level\" (location_id)"
+        },
+        {
+          "keyName": "inventory_level_pkey",
+          "columnNames": [
+            "id"
+          ],
+          "composite": false,
+          "primary": true,
+          "unique": true
+        }
+      ],
+      "checks": [],
+      "foreignKeys": {
+        "inventory_level_inventory_item_id_foreign": {
+          "constraintName": "inventory_level_inventory_item_id_foreign",
+          "columnNames": [
+            "inventory_item_id"
+          ],
+          "localTableName": "public.inventory_level",
+          "referencedColumnNames": [
+            "id"
+          ],
+          "referencedTableName": "public.inventory_item",
+          "deleteRule": "cascade",
+          "updateRule": "cascade"
+        }
+      }
+    },
+    {
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "length": 6,
+          "default": "now()",
+          "mappedType": "datetime"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "length": 6,
+          "default": "now()",
+          "mappedType": "datetime"
+        },
+        "deleted_at": {
+          "name": "deleted_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "length": 6,
+          "mappedType": "datetime"
+        },
+        "line_item_id": {
+          "name": "line_item_id",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "location_id": {
+          "name": "location_id",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        },
+        "quantity": {
+          "name": "quantity",
+          "type": "integer",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "integer"
+        },
+        "external_id": {
+          "name": "external_id",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "description": {
+          "name": "description",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "created_by": {
+          "name": "created_by",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "text"
+        },
+        "metadata": {
+          "name": "metadata",
+          "type": "jsonb",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "json"
+        },
+        "inventory_item_id": {
+          "name": "inventory_item_id",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        }
+      },
+      "name": "reservation_item",
+      "schema": "public",
+      "indexes": [
+        {
+          "keyName": "IDX_reservation_item_deleted_at",
+          "columnNames": [
+            "deleted_at"
+          ],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE INDEX IF NOT EXISTS \"IDX_reservation_item_deleted_at\" ON \"reservation_item\" (deleted_at) WHERE deleted_at IS NOT NULL"
+        },
+        {
+          "keyName": "IDX_reservation_item_line_item_id",
+          "columnNames": [
+            "line_item_id"
+          ],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE INDEX IF NOT EXISTS \"IDX_reservation_item_line_item_id\" ON \"reservation_item\" (line_item_id)"
+        },
+        {
+          "keyName": "IDX_reservation_item_location_id",
+          "columnNames": [
+            "location_id"
+          ],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE INDEX IF NOT EXISTS \"IDX_reservation_item_location_id\" ON \"reservation_item\" (location_id)"
+        },
+        {
+          "keyName": "IDX_reservation_item_inventory_item_id",
+          "columnNames": [
+            "inventory_item_id"
+          ],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE INDEX IF NOT EXISTS \"IDX_reservation_item_inventory_item_id\" ON \"reservation_item\" (inventory_item_id)"
+        },
+        {
+          "keyName": "reservation_item_pkey",
+          "columnNames": [
+            "id"
+          ],
+          "composite": false,
+          "primary": true,
+          "unique": true
+        }
+      ],
+      "checks": [],
+      "foreignKeys": {
+        "reservation_item_inventory_item_id_foreign": {
+          "constraintName": "reservation_item_inventory_item_id_foreign",
+          "columnNames": [
+            "inventory_item_id"
+          ],
+          "localTableName": "public.reservation_item",
+          "referencedColumnNames": [
+            "id"
+          ],
+          "referencedTableName": "public.inventory_item",
+          "deleteRule": "cascade",
+          "updateRule": "cascade"
+        }
+      }
+    }
+  ]
+}
--- a/packages/inventory-next/src/migrations/Migration20240307132720.ts
+++ b/packages/inventory-next/src/migrations/Migration20240307132720.ts
@@ -0,0 +1,39 @@
+import { Migration } from '@mikro-orm/migrations';
+
+export class Migration20240307132720 extends Migration {
+
+  async up(): Promise<void> {
+    this.addSql('create table if not exists "inventory_item" ("id" text not null, "created_at" timestamptz not null default now(), "updated_at" timestamptz not null default now(), "deleted_at" timestamptz null, "sku" text null, "origin_country" text null, "hs_code" text null, "mid_code" text null, "material" text null, "weight" int null, "length" int null, "height" int null, "width" int null, "requires_shipping" boolean not null default true, "description" text null, "title" text null, "thumbnail" text null, "metadata" jsonb null, constraint "inventory_item_pkey" primary key ("id"));');
+    this.addSql('CREATE INDEX IF NOT EXISTS "IDX_inventory_item_deleted_at" ON "inventory_item" (deleted_at) WHERE deleted_at IS NOT NULL;');
+    this.addSql('CREATE UNIQUE INDEX IF NOT EXISTS "IDX_inventory_item_sku_unique" ON "inventory_item" (sku);');
+
+    this.addSql('create table if not exists "inventory_level" ("id" text not null, "created_at" timestamptz not null default now(), "updated_at" timestamptz not null default now(), "deleted_at" timestamptz null, "inventory_item_id" text not null, "location_id" text not null, "stocked_quantity" int not null default 0, "reserved_quantity" int not null default 0, "incoming_quantity" int not null default 0, "metadata" jsonb null, constraint "inventory_level_pkey" primary key ("id"));');
+    this.addSql('CREATE INDEX IF NOT EXISTS "IDX_inventory_level_deleted_at" ON "inventory_level" (deleted_at) WHERE deleted_at IS NOT NULL;');
+    this.addSql('CREATE INDEX IF NOT EXISTS "IDX_inventory_level_inventory_item_id" ON "inventory_level" (inventory_item_id);');
+    this.addSql('CREATE INDEX IF NOT EXISTS "IDX_inventory_level_location_id" ON "inventory_level" (location_id);');
+    this.addSql('CREATE INDEX IF NOT EXISTS "IDX_inventory_level_location_id" ON "inventory_level" (location_id);');
+
+    this.addSql('create table if not exists "reservation_item" ("id" text not null, "created_at" timestamptz not null default now(), "updated_at" timestamptz not null default now(), "deleted_at" timestamptz null, "line_item_id" text null, "location_id" text not null, "quantity" integer not null, "external_id" text null, "description" text null, "created_by" text null, "metadata" jsonb null, "inventory_item_id" text not null, constraint "reservation_item_pkey" primary key ("id"));');
+    this.addSql('CREATE INDEX IF NOT EXISTS "IDX_reservation_item_deleted_at" ON "reservation_item" (deleted_at) WHERE deleted_at IS NOT NULL;');
+    this.addSql('CREATE INDEX IF NOT EXISTS "IDX_reservation_item_line_item_id" ON "reservation_item" (line_item_id);');
+    this.addSql('CREATE INDEX IF NOT EXISTS "IDX_reservation_item_location_id" ON "reservation_item" (location_id);');
+    this.addSql('CREATE INDEX IF NOT EXISTS "IDX_reservation_item_inventory_item_id" ON "reservation_item" (inventory_item_id);');
+
+    this.addSql('alter table if exists "inventory_level" add constraint "inventory_level_inventory_item_id_foreign" foreign key ("inventory_item_id") references "inventory_item" ("id") on update cascade on delete cascade;');
+
+    this.addSql('alter table if exists "reservation_item" add constraint "reservation_item_inventory_item_id_foreign" foreign key ("inventory_item_id") references "inventory_item" ("id") on update cascade on delete cascade;');
+  }
+
+  async down(): Promise<void> {
+    this.addSql('alter table if exists "inventory_level" drop constraint if exists "inventory_level_inventory_item_id_foreign";');
+
+    this.addSql('alter table if exists "reservation_item" drop constraint if exists "reservation_item_inventory_item_id_foreign";');
+
+    this.addSql('drop table if exists "inventory_item" cascade;');
+
+    this.addSql('drop table if exists "inventory_level" cascade;');
+
+    this.addSql('drop table if exists "reservation_item" cascade;');
+  }
+
+}
--- a/packages/inventory-next/src/models/index.ts
+++ b/packages/inventory-next/src/models/index.ts
@@ -0,0 +1,3 @@
+export * from "./reservation-item"
+export * from "./inventory-item"
+export * from "./inventory-level"
--- a/packages/inventory-next/src/models/inventory-item.ts
+++ b/packages/inventory-next/src/models/inventory-item.ts
@@ -0,0 +1,120 @@
+import {
+  BeforeCreate,
+  Collection,
+  Entity,
+  Filter,
+  OnInit,
+  OneToMany,
+  OptionalProps,
+  PrimaryKey,
+  Property,
+} from "@mikro-orm/core"
+import {
+  DALUtils,
+  createPsqlIndexStatementHelper,
+  generateEntityId,
+} from "@medusajs/utils"
+
+import { DAL } from "@medusajs/types"
+import { InventoryLevel } from "./inventory-level"
+
+const InventoryItemDeletedAtIndex = createPsqlIndexStatementHelper({
+  tableName: "inventory_item",
+  columns: "deleted_at",
+  where: "deleted_at IS NOT NULL",
+})
+
+const InventoryItemSkuIndex = createPsqlIndexStatementHelper({
+  tableName: "inventory_item",
+  columns: "sku",
+  unique: true,
+})
+
+type InventoryItemOptionalProps = DAL.SoftDeletableEntityDateColumns
+
+@Entity()
+@Filter(DALUtils.mikroOrmSoftDeletableFilterOptions)
+export class InventoryItem {
+  [OptionalProps]: InventoryItemOptionalProps
+
+  @PrimaryKey({ columnType: "text" })
+  id: string
+
+  @Property({
+    onCreate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  created_at: Date
+
+  @Property({
+    onCreate: () => new Date(),
+    onUpdate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  updated_at: Date
+
+  @InventoryItemDeletedAtIndex.MikroORMIndex()
+  @Property({ columnType: "timestamptz", nullable: true })
+  deleted_at: Date | null = null
+
+  @InventoryItemSkuIndex.MikroORMIndex()
+  @Property({ columnType: "text", nullable: true })
+  sku: string | null = null
+
+  @Property({ columnType: "text", nullable: true })
+  origin_country: string | null = null
+
+  @Property({ columnType: "text", nullable: true })
+  hs_code: string | null = null
+
+  @Property({ columnType: "text", nullable: true })
+  mid_code: string | null = null
+
+  @Property({ columnType: "text", nullable: true })
+  material: string | null = null
+
+  @Property({ type: "int", nullable: true })
+  weight: number | null = null
+
+  @Property({ type: "int", nullable: true })
+  length: number | null = null
+
+  @Property({ type: "int", nullable: true })
+  height: number | null = null
+
+  @Property({ type: "int", nullable: true })
+  width: number | null = null
+
+  @Property({ columnType: "boolean" })
+  requires_shipping: boolean = true
+
+  @Property({ columnType: "text", nullable: true })
+  description: string | null = null
+
+  @Property({ columnType: "text", nullable: true })
+  title: string | null = null
+
+  @Property({ columnType: "text", nullable: true })
+  thumbnail: string | null = null
+
+  @Property({ columnType: "jsonb", nullable: true })
+  metadata: Record<string, unknown> | null = null
+
+  @OneToMany(
+    () => InventoryLevel,
+    (inventoryLevel) => inventoryLevel.inventory_item
+  )
+  inventory_levels = new Collection<InventoryLevel>(this)
+
+  @BeforeCreate()
+  private beforeCreate(): void {
+    this.id = generateEntityId(this.id, "iitem")
+  }
+
+  @OnInit()
+  private onInit(): void {
+    this.id = generateEntityId(this.id, "iitem")
+  }
+}
--- a/packages/inventory-next/src/models/inventory-level.ts
+++ b/packages/inventory-next/src/models/inventory-level.ts
@@ -0,0 +1,104 @@
+import {
+  BeforeCreate,
+  Entity,
+  Filter,
+  ManyToOne,
+  OnInit,
+  PrimaryKey,
+  Property,
+} from "@mikro-orm/core"
+
+import { DALUtils } from "@medusajs/utils"
+import { InventoryItem } from "./inventory-item"
+import { createPsqlIndexStatementHelper } from "@medusajs/utils"
+import { generateEntityId } from "@medusajs/utils"
+
+const InventoryLevelDeletedAtIndex = createPsqlIndexStatementHelper({
+  tableName: "inventory_level",
+  columns: "deleted_at",
+  where: "deleted_at IS NOT NULL",
+})
+
+const InventoryLevelInventoryItemIdIndex = createPsqlIndexStatementHelper({
+  tableName: "inventory_level",
+  columns: "inventory_item_id",
+})
+
+const InventoryLevelLocationIdIndex = createPsqlIndexStatementHelper({
+  tableName: "inventory_level",
+  columns: "location_id",
+})
+
+const InventoryLevelLocationIdInventoryItemIdIndex =
+  createPsqlIndexStatementHelper({
+    tableName: "inventory_level",
+    columns: "location_id",
+  })
+
+@Entity()
+@InventoryLevelLocationIdInventoryItemIdIndex.MikroORMIndex()
+@Filter(DALUtils.mikroOrmSoftDeletableFilterOptions)
+export class InventoryLevel {
+  @PrimaryKey({ columnType: "text" })
+  id: string
+
+  @Property({
+    onCreate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  created_at: Date
+
+  @Property({
+    onCreate: () => new Date(),
+    onUpdate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  updated_at: Date
+
+  @InventoryLevelDeletedAtIndex.MikroORMIndex()
+  @Property({ columnType: "timestamptz", nullable: true })
+  deleted_at: Date | null = null
+
+  @ManyToOne(() => InventoryItem, {
+    fieldName: "inventory_item_id",
+    type: "text",
+    mapToPk: true,
+    onDelete: "cascade",
+  })
+  @InventoryLevelInventoryItemIdIndex.MikroORMIndex()
+  inventory_item_id: string
+
+  @InventoryLevelLocationIdIndex.MikroORMIndex()
+  @Property({ type: "text" })
+  location_id: string
+
+  @Property({ type: "int" })
+  stocked_quantity: number = 0
+
+  @Property({ type: "int" })
+  reserved_quantity: number = 0
+
+  @Property({ type: "int" })
+  incoming_quantity: number = 0
+
+  @Property({ columnType: "jsonb", nullable: true })
+  metadata: Record<string, unknown> | null
+
+  @ManyToOne(() => InventoryItem, {
+    persist: false,
+  })
+  inventory_item: InventoryItem
+
+  @BeforeCreate()
+  private beforeCreate(): void {
+    this.id = generateEntityId(this.id, "ilev")
+    this.inventory_item_id ??= this.inventory_item?.id
+  }
+
+  @OnInit()
+  private onInit(): void {
+    this.id = generateEntityId(this.id, "ilev")
+  }
+}
--- a/packages/inventory-next/src/models/reservation-item.ts
+++ b/packages/inventory-next/src/models/reservation-item.ts
@@ -0,0 +1,107 @@
+import {
+  BeforeCreate,
+  Entity,
+  Filter,
+  ManyToOne,
+  OnInit,
+  PrimaryKey,
+  Property,
+} from "@mikro-orm/core"
+
+import { DALUtils } from "@medusajs/utils"
+import { InventoryItem } from "./inventory-item"
+import { createPsqlIndexStatementHelper } from "@medusajs/utils"
+import { generateEntityId } from "@medusajs/utils"
+
+const ReservationItemDeletedAtIndex = createPsqlIndexStatementHelper({
+  tableName: "reservation_item",
+  columns: "deleted_at",
+  where: "deleted_at IS NOT NULL",
+})
+const ReservationItemLineItemIdIndex = createPsqlIndexStatementHelper({
+  tableName: "reservation_item",
+  columns: "line_item_id",
+})
+
+const ReservationItemInventoryItemIdIndex = createPsqlIndexStatementHelper({
+  tableName: "reservation_item",
+  columns: "inventory_item_id",
+})
+
+const ReservationItemLocationIdIndex = createPsqlIndexStatementHelper({
+  tableName: "reservation_item",
+  columns: "location_id",
+})
+
+@Entity()
+@Filter(DALUtils.mikroOrmSoftDeletableFilterOptions)
+export class ReservationItem {
+  @PrimaryKey({ columnType: "text" })
+  id: string
+
+  @Property({
+    onCreate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  created_at: Date
+
+  @Property({
+    onCreate: () => new Date(),
+    onUpdate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  updated_at: Date
+
+  @ReservationItemDeletedAtIndex.MikroORMIndex()
+  @Property({ columnType: "timestamptz", nullable: true })
+  deleted_at: Date | null = null
+
+  @ReservationItemLineItemIdIndex.MikroORMIndex()
+  @Property({ type: "text", nullable: true })
+  line_item_id: string | null = null
+
+  @ReservationItemLocationIdIndex.MikroORMIndex()
+  @Property({ type: "text" })
+  location_id: string
+
+  @Property({ columnType: "integer" })
+  quantity: number
+
+  @Property({ type: "text", nullable: true })
+  external_id: string | null = null
+
+  @Property({ type: "text", nullable: true })
+  description: string | null = null
+
+  @Property({ type: "text", nullable: true })
+  created_by: string | null = null
+
+  @Property({ type: "jsonb", nullable: true })
+  metadata: Record<string, unknown> | null = null
+
+  @ReservationItemInventoryItemIdIndex.MikroORMIndex()
+  @ManyToOne(() => InventoryItem, {
+    fieldName: "inventory_item_id",
+    type: "text",
+    mapToPk: true,
+    onDelete: "cascade",
+  })
+  inventory_item_id: string
+
+  @ManyToOne(() => InventoryItem, {
+    persist: false,
+  })
+  inventory_item: InventoryItem
+
+  @BeforeCreate()
+  private beforeCreate(): void {
+    this.id = generateEntityId(this.id, "ilev")
+  }
+
+  @OnInit()
+  private onInit(): void {
+    this.id = generateEntityId(this.id, "ilev")
+  }
+}
--- a/packages/inventory-next/src/module-definition.ts
+++ b/packages/inventory-next/src/module-definition.ts
@@ -0,0 +1,44 @@
+import * as InventoryModels from "@models"
+import * as InventoryRepositories from "@repositories"
+import * as InventoryServices from "@services"
+
+import InventoryService from "./services/inventory"
+import { ModuleExports } from "@medusajs/types"
+import { Modules } from "@medusajs/modules-sdk"
+import { ModulesSdkUtils } from "@medusajs/utils"
+
+const migrationScriptOptions = {
+  moduleName: Modules.INVENTORY,
+  models: InventoryModels,
+  pathToMigrations: __dirname + "/migrations",
+}
+
+const runMigrations = ModulesSdkUtils.buildMigrationScript(
+  migrationScriptOptions
+)
+
+const revertMigration = ModulesSdkUtils.buildRevertMigrationScript(
+  migrationScriptOptions
+)
+
+const containerLoader = ModulesSdkUtils.moduleContainerLoaderFactory({
+  moduleModels: InventoryModels,
+  moduleRepositories: InventoryRepositories,
+  moduleServices: InventoryServices,
+})
+
+const connectionLoader = ModulesSdkUtils.mikroOrmConnectionLoaderFactory({
+  moduleName: Modules.INVENTORY,
+  moduleModels: Object.values(InventoryModels),
+  migrationsPath: __dirname + "/migrations",
+})
+
+const service = InventoryService
+const loaders = [containerLoader, connectionLoader]
+
+export const moduleDefinition: ModuleExports = {
+  service,
+  loaders,
+  revertMigration,
+  runMigrations,
+}
--- a/packages/inventory-next/src/repositories/index.ts
+++ b/packages/inventory-next/src/repositories/index.ts
@@ -0,0 +1,2 @@
+export * from "./inventory-level"
+export { MikroOrmBaseRepository as BaseRepository } from "@medusajs/utils"
--- a/packages/inventory-next/src/repositories/inventory-level.ts
+++ b/packages/inventory-next/src/repositories/inventory-level.ts
@@ -0,0 +1,72 @@
+import { Context } from "@medusajs/types"
+import { InventoryLevel } from "@models"
+import { SqlEntityManager } from "@mikro-orm/postgresql"
+import { mikroOrmBaseRepositoryFactory } from "@medusajs/utils"
+
+export class InventoryLevelRepository extends mikroOrmBaseRepositoryFactory(
+  InventoryLevel
+) {
+  async getReservedQuantity(
+    inventoryItemId: string,
+    locationIds: string[],
+    context: Context = {}
+  ): Promise<number> {
+    const manager = super.getActiveManager<SqlEntityManager>(context)
+
+    const [result] = (await manager
+      .getKnex()({ il: "inventory_level" })
+      .sum("reserved_quantity")
+      .whereIn("location_id", locationIds)
+      .andWhere("inventory_item_id", inventoryItemId)) as {
+      sum: string
+    }[]
+
+    return parseInt(result.sum)
+  }
+
+  async getAvailableQuantity(
+    inventoryItemId: string,
+    locationIds: string[],
+    context: Context = {}
+  ): Promise<number> {
+    const knex = super.getActiveManager<SqlEntityManager>(context).getKnex()
+
+    const [result] = (await knex({
+      il: "inventory_level",
+    })
+      .sum({
+        stocked_quantity: "stocked_quantity",
+        reserved_quantity: "reserved_quantity",
+      })
+      .whereIn("location_id", locationIds)
+      .andWhere("inventory_item_id", inventoryItemId)) as {
+      reserved_quantity: string
+      stocked_quantity: string
+    }[]
+
+    return (
+      parseInt(result.stocked_quantity) - parseInt(result.reserved_quantity)
+    )
+  }
+
+  async getStockedQuantity(
+    inventoryItemId: string,
+    locationIds: string[],
+    context: Context = {}
+  ): Promise<number> {
+    const knex = super.getActiveManager<SqlEntityManager>(context).getKnex()
+
+    const [result] = (await knex({
+      il: "inventory_level",
+    })
+      .sum({
+        stocked_quantity: "stocked_quantity",
+      })
+      .whereIn("location_id", locationIds)
+      .andWhere("inventory_item_id", inventoryItemId)) as {
+      stocked_quantity: string
+    }[]
+
+    return parseInt(result.stocked_quantity)
+  }
+}
--- a/packages/inventory-next/src/schema/index.ts
+++ b/packages/inventory-next/src/schema/index.ts
@@ -0,0 +1,55 @@
+export default `
+scalar DateTime
+scalar JSON
+
+type InventoryItem {
+  id: ID!
+  created_at: DateTime!
+  updated_at: DateTime!
+  deleted_at: DateTime
+  sku: String
+  origin_country: String
+  hs_code: String
+  mid_code: String
+  material: String
+  weight: Int
+  length: Int
+  height: Int
+  width: Int
+  requires_shipping: Boolean!
+  description: String
+  title: String
+  thumbnail: String
+  metadata: JSON
+  
+  inventory_levels: [InventoryLevel]
+}
+
+type InventoryLevel {
+  id: ID!
+  created_at: DateTime!
+  updated_at: DateTime!
+  deleted_at: DateTime
+  inventory_item_id: String!
+  location_id: String!
+  stocked_quantity: Int!
+  reserved_quantity: Int!
+  incoming_quantity: Int!
+  metadata: JSON
+}
+
+type ReservationItem {
+  id: ID!
+  created_at: DateTime!
+  updated_at: DateTime!
+  deleted_at: DateTime
+  line_item_id: String
+  inventory_item_id: String!
+  location_id: String!
+  quantity: Int!
+  external_id: String
+  description: String
+  created_by: String
+  metadata: JSON
+}
+`
--- a/packages/inventory-next/src/services/tests/noop.ts
+++ b/packages/inventory-next/src/services/tests/noop.ts
@@ -0,0 +1,5 @@
+describe("noop", function () {
+  it("should run", function () {
+    expect(true).toBe(true)
+  })
+})
--- a/packages/inventory-next/src/services/index.ts
+++ b/packages/inventory-next/src/services/index.ts
@@ -0,0 +1,2 @@
+export { default as InventoryModuleService } from "./inventory"
+export { default as InventoryLevelService } from "./inventory-level"
--- a/packages/inventory-next/src/services/inventory-level.ts
+++ b/packages/inventory-next/src/services/inventory-level.ts
@@ -0,0 +1,79 @@
+import {
+  Context,
+  CreateInventoryLevelInput,
+  DAL,
+  SharedContext,
+} from "@medusajs/types"
+import {
+  InjectTransactionManager,
+  MedusaContext,
+  ModulesSdkUtils,
+} from "@medusajs/utils"
+
+import { InventoryLevel } from "../models/inventory-level"
+import { InventoryLevelRepository } from "@repositories"
+
+type InjectedDependencies = {
+  inventoryLevelRepository: InventoryLevelRepository
+}
+
+export default class InventoryLevelService<
+  TEntity extends InventoryLevel = InventoryLevel
+> extends ModulesSdkUtils.internalModuleServiceFactory<InjectedDependencies>(
+  InventoryLevel
+)<TEntity> {
+  protected readonly inventoryLevelRepository: InventoryLevelRepository
+
+  constructor(container: InjectedDependencies) {
+    super(container)
+    this.inventoryLevelRepository = container.inventoryLevelRepository
+  }
+
+  async retrieveStockedQuantity(
+    inventoryItemId: string,
+    locationIds: string[] | string,
+    context: Context = {}
+  ): Promise<number> {
+    const locationIdArray = Array.isArray(locationIds)
+      ? locationIds
+      : [locationIds]
+
+    return await this.inventoryLevelRepository.getStockedQuantity(
+      inventoryItemId,
+      locationIdArray,
+      context
+    )
+  }
+
+  async getAvailableQuantity(
+    inventoryItemId: string,
+    locationIds: string[] | string,
+    context: Context = {}
+  ): Promise<number> {
+    const locationIdArray = Array.isArray(locationIds)
+      ? locationIds
+      : [locationIds]
+
+    return await this.inventoryLevelRepository.getAvailableQuantity(
+      inventoryItemId,
+      locationIdArray,
+      context
+    )
+  }
+
+  async getReservedQuantity(
+    inventoryItemId: string,
+    locationIds: string[] | string,
+    context: Context = {}
+  ) {
+    if (!Array.isArray(locationIds)) {
+      locationIds = [locationIds]
+    }
+
+    return await this.inventoryLevelRepository.getReservedQuantity(
+      inventoryItemId,
+      locationIds,
+      context
+    )
+  }
+}
--- a/packages/inventory-next/src/services/inventory.ts
+++ b/packages/inventory-next/src/services/inventory.ts
--- a/packages/inventory-next/tsconfig.json
+++ b/packages/inventory-next/tsconfig.json
@@ -0,0 +1,38 @@
+{
+  "compilerOptions": {
+    "lib": ["es2020"],
+    "target": "es2020",
+    "outDir": "./dist",
+    "esModuleInterop": true,
+    "declaration": true,
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "sourceMap": false,
+    "noImplicitReturns": true,
+    "strictNullChecks": true,
+    "strictFunctionTypes": true,
+    "noImplicitThis": true,
+    "allowJs": true,
+    "skipLibCheck": true,
+    "downlevelIteration": true, // to use ES5 specific tooling
+    "baseUrl": ".",
+    "resolveJsonModule": true,
+    "paths": {
+      "@models": ["./src/models"],
+      "@services": ["./src/services"],
+      "@repositories": ["./src/repositories"],
+      "@types": ["./src/types"],
+      "@utils": ["./src/utils"]
+    }
+  },
+  "include": ["src"],
+  "exclude": [
+    "dist",
+    "./src/**/__tests__",
+    "./src/**/__mocks__",
+    "./src/**/__fixtures__",
+    "node_modules"
+  ]
+}
--- a/packages/inventory-next/tsconfig.spec.json
+++ b/packages/inventory-next/tsconfig.spec.json
@@ -0,0 +1,5 @@
+{
+  "extends": "./tsconfig.json",
+  "include": ["src"],
+  "exclude": ["node_modules"]
+}
--- a/packages/medusa-test-utils/src/module-test-runner.ts
+++ b/packages/medusa-test-utils/src/module-test-runner.ts
@@ -22,8 +22,8 @@ export function moduleIntegrationTestRunner({
  joinerConfig = [],
  schema = "public",
  debug = false,
-  resolve,
  testSuite,
+  resolve,
  injectedDependencies = {},
 }: {
  moduleName: string
@@ -32,8 +32,8 @@ export function moduleIntegrationTestRunner({
  joinerConfig?: any[]
  schema?: string
  dbName?: string
-  resolve?: string
  injectedDependencies?: Record<string, any>
+  resolve?: string
  debug?: boolean
  testSuite: <TService = unknown>(options: SuiteOptions<TService>) => () => void
 }) {
--- a/packages/types/src/inventory/bundle.ts
+++ b/packages/types/src/inventory/bundle.ts
@@ -0,0 +1,2 @@
+export * from "./common/index"
+export * from "./mutations"
--- a/packages/types/src/inventory/common.ts
+++ b/packages/types/src/inventory/common.ts
@@ -204,7 +204,7 @@ export type InventoryLevelDTO = {

 /**
 * @interface
- * 
+ *
 * The filters to apply on retrieved reservation items.
 */
 export type FilterableReservationItemProps = {
@@ -214,7 +214,7 @@ export type FilterableReservationItemProps = {
  id?: string | string[]
  /**
   * @ignore
-   * 
+   *
   * @privateRemark
   * This property is not used.
   */
@@ -247,7 +247,7 @@ export type FilterableReservationItemProps = {

 /**
 * @interface
- * 
+ *
 * The filters to apply on retrieved inventory items.
 */
 export type FilterableInventoryItemProps = {
@@ -281,12 +281,16 @@ export type FilterableInventoryItemProps = {
  requires_shipping?: boolean
 }

+export interface UpdateInventoryItemInput
+  extends Partial<CreateInventoryItemInput> {
+  id: string
+}
 /**
 * @interface
- * 
+ *
 * The details of the inventory item to be created.
 */
-export type CreateInventoryItemInput = {
+export interface CreateInventoryItemInput {
  /**
   * The SKU of the inventory item.
   */
@@ -347,7 +351,7 @@ export type CreateInventoryItemInput = {

 /**
 * @interface
- * 
+ *
 * The details of the reservation item to be created.
 */
 export type CreateReservationItemInput = {
@@ -387,7 +391,7 @@ export type CreateReservationItemInput = {

 /**
 * @interface
- * 
+ *
 * The filters to apply on retrieved inventory levels.
 */
 export type FilterableInventoryLevelProps = {
@@ -415,7 +419,7 @@ export type FilterableInventoryLevelProps = {

 /**
 * @interface
- * 
+ *
 * The details of the inventory level to be created.
 */
 export type CreateInventoryLevelInput = {
@@ -443,7 +447,7 @@ export type CreateInventoryLevelInput = {

 /**
 * @interface
- * 
+ *
 * The attributes to update in an inventory level.
 */
 export type UpdateInventoryLevelInput = {
@@ -459,7 +463,7 @@ export type UpdateInventoryLevelInput = {

 /**
 * @interface
- * 
+ *
 * The attributes to update in an inventory level. The inventory level is identified by the IDs of its associated inventory item and location.
 */
 export type BulkUpdateInventoryLevelInput = {
@@ -475,7 +479,7 @@ export type BulkUpdateInventoryLevelInput = {

 /**
 * @interface
- * 
+ *
 * The attributes to update in a reservation item.
 */
 export type UpdateReservationItemInput = {
--- a/packages/types/src/inventory/common/index.ts
+++ b/packages/types/src/inventory/common/index.ts
@@ -0,0 +1,3 @@
+export * from "./inventory-item"
+export * from "./inventory-level"
+export * from "./reservation-item"
--- a/packages/types/src/inventory/common/inventory-item.ts
+++ b/packages/types/src/inventory/common/inventory-item.ts
@@ -0,0 +1,124 @@
+import { StringComparisonOperator } from "../../common"
+
+/**
+ * @schema InventoryItemDTO
+ * type: object
+ * required:
+ *   - sku
+ * properties:
+ *   id:
+ *     description: The inventory item's ID.
+ *     type: string
+ *     example: "iitem_12334"
+ *   sku:
+ *     description: The Stock Keeping Unit (SKU) code of the Inventory Item.
+ *     type: string
+ *   hs_code:
+ *     description: The Harmonized System code of the Inventory Item. May be used by Fulfillment Providers to pass customs information to shipping carriers.
+ *     type: string
+ *   origin_country:
+ *     description: The country in which the Inventory Item was produced. May be used by Fulfillment Providers to pass customs information to shipping carriers.
+ *     type: string
+ *   mid_code:
+ *     description: The Manufacturers Identification code that identifies the manufacturer of the Inventory Item. May be used by Fulfillment Providers to pass customs information to shipping carriers.
+ *     type: string
+ *   title:
+ *     description: "Title of the inventory item"
+ *     type: string
+ *   description:
+ *     description: "Description of the inventory item"
+ *     type: string
+ *   thumbnail:
+ *     description: "Thumbnail for the inventory item"
+ *     type: string
+ *   material:
+ *     description: The material and composition that the Inventory Item is made of, May be used by Fulfillment Providers to pass customs information to shipping carriers.
+ *     type: string
+ *   weight:
+ *     description: The weight of the Inventory Item. May be used in shipping rate calculations.
+ *     type: number
+ *   height:
+ *     description: The height of the Inventory Item. May be used in shipping rate calculations.
+ *     type: number
+ *   width:
+ *     description: The width of the Inventory Item. May be used in shipping rate calculations.
+ *     type: number
+ *   length:
+ *     description: The length of the Inventory Item. May be used in shipping rate calculations.
+ *     type: number
+ *   requires_shipping:
+ *     description: Whether the item requires shipping.
+ *     type: boolean
+ *   metadata:
+ *     type: object
+ *     description: An optional key-value map with additional details
+ *     example: {car: "white"}
+ *   created_at:
+ *     type: string
+ *     description: "The date with timezone at which the resource was created."
+ *     format: date-time
+ *   updated_at:
+ *     type: string
+ *     description: "The date with timezone at which the resource was updated."
+ *     format: date-time
+ *   deleted_at:
+ *     type: string
+ *     description: "The date with timezone at which the resource was deleted."
+ *     format: date-time
+ */
+export interface InventoryItemDTO {
+  id: string
+  sku?: string | null
+  origin_country?: string | null
+  hs_code?: string | null
+  requires_shipping: boolean
+  mid_code?: string | null
+  material?: string | null
+  weight?: number | null
+  length?: number | null
+  height?: number | null
+  width?: number | null
+  title?: string | null
+  description?: string | null
+  thumbnail?: string | null
+  metadata?: Record<string, unknown> | null
+  created_at: string | Date
+  updated_at: string | Date
+  deleted_at: string | Date | null
+}
+
+/**
+ * @interface
+ *
+ * The filters to apply on retrieved inventory items.
+ */
+export interface FilterableInventoryItemProps {
+  /**
+   * The IDs to filter inventory items by.
+   */
+  id?: string | string[]
+  /**
+   * Filter inventory items by the ID of their associated location.
+   */
+  location_id?: string | string[]
+  /**
+   * Search term to search inventory items' attributes.
+   */
+  q?: string
+  /**
+   * The SKUs to filter inventory items by.
+   */
+  sku?: string | string[] | StringComparisonOperator
+  /**
+   * The origin country to filter inventory items by.
+   */
+  origin_country?: string | string[]
+  /**
+   * The HS Codes to filter inventory items by.
+   */
+  hs_code?: string | string[] | StringComparisonOperator
+  /**
+   * Filter inventory items by whether they require shipping.
+   */
+  requires_shipping?: boolean
+}
--- a/packages/types/src/inventory/common/inventory-level.ts
+++ b/packages/types/src/inventory/common/inventory-level.ts
@@ -0,0 +1,76 @@
+import { NumericalComparisonOperator } from "../../common"
+
+/**
+ * @schema InventoryLevelDTO
+ * type: object
+ * required:
+ *   - inventory_item_id
+ *   - location_id
+ *   - stocked_quantity
+ *   - reserved_quantity
+ *   - incoming_quantity
+ * properties:
+ *   location_id:
+ *     description: the item location ID
+ *     type: string
+ *   stocked_quantity:
+ *     description: the total stock quantity of an inventory item at the given location ID
+ *     type: number
+ *   reserved_quantity:
+ *     description: the reserved stock quantity of an inventory item at the given location ID
+ *     type: number
+ *   incoming_quantity:
+ *     description: the incoming stock quantity of an inventory item at the given location ID
+ *     type: number
+ *   metadata:
+ *     type: object
+ *     description: An optional key-value map with additional details
+ *     example: {car: "white"}
+ *   created_at:
+ *     type: string
+ *     description: "The date with timezone at which the resource was created."
+ *     format: date-time
+ *   updated_at:
+ *     type: string
+ *     description: "The date with timezone at which the resource was updated."
+ *     format: date-time
+ *   deleted_at:
+ *     type: string
+ *     description: "The date with timezone at which the resource was deleted."
+ *     format: date-time
+ */
+export interface InventoryLevelDTO {
+  id: string
+  inventory_item_id: string
+  location_id: string
+  stocked_quantity: number
+  reserved_quantity: number
+  incoming_quantity: number
+  metadata: Record<string, unknown> | null
+  created_at: string | Date
+  updated_at: string | Date
+  deleted_at: string | Date | null
+}
+
+export interface FilterableInventoryLevelProps {
+  /**
+   * Filter inventory levels by the ID of their associated inventory item.
+   */
+  inventory_item_id?: string | string[]
+  /**
+   * Filter inventory levels by the ID of their associated inventory location.
+   */
+  location_id?: string | string[]
+  /**
+   * Filters to apply on inventory levels' `stocked_quantity` attribute.
+   */
+  stocked_quantity?: number | NumericalComparisonOperator
+  /**
+   * Filters to apply on inventory levels' `reserved_quantity` attribute.
+   */
+  reserved_quantity?: number | NumericalComparisonOperator
+  /**
+   * Filters to apply on inventory levels' `incoming_quantity` attribute.
+   */
+  incoming_quantity?: number | NumericalComparisonOperator
+}
--- a/packages/types/src/inventory/common/reservation-item.ts
+++ b/packages/types/src/inventory/common/reservation-item.ts
@@ -0,0 +1,107 @@
+import {
+  NumericalComparisonOperator,
+  StringComparisonOperator,
+} from "../../common"
+
+/**
+ * @schema ReservationItemDTO
+ * title: "Reservation item"
+ * description: "Represents a reservation of an inventory item at a stock location"
+ * type: object
+ * required:
+ * - id
+ * - location_id
+ * - inventory_item_id
+ * - quantity
+ * properties:
+ *   id:
+ *     description: "The id of the reservation item"
+ *     type: string
+ *   location_id:
+ *     description: "The id of the location of the reservation"
+ *     type: string
+ *   inventory_item_id:
+ *     description: "The id of the inventory item the reservation relates to"
+ *     type: string
+ *   description:
+ *     description: "Description of the reservation item"
+ *     type: string
+ *   created_by:
+ *     description: "UserId of user who created the reservation item"
+ *     type: string
+ *   quantity:
+ *     description: "The id of the reservation item"
+ *     type: number
+ *   metadata:
+ *     type: object
+ *     description: An optional key-value map with additional details
+ *     example: {car: "white"}
+ *   created_at:
+ *     type: string
+ *     description: "The date with timezone at which the resource was created."
+ *     format: date-time
+ *   updated_at:
+ *     type: string
+ *     description: "The date with timezone at which the resource was updated."
+ *     format: date-time
+ *   deleted_at:
+ *     type: string
+ *     description: "The date with timezone at which the resource was deleted."
+ *     format: date-time
+ */
+export interface ReservationItemDTO {
+  id: string
+  location_id: string
+  inventory_item_id: string
+  quantity: number
+  line_item_id?: string | null
+  description?: string | null
+  created_by?: string | null
+  metadata: Record<string, unknown> | null
+  created_at: string | Date
+  updated_at: string | Date
+  deleted_at: string | Date | null
+}
+
+/**
+ * @interface
+ *
+ * The filters to apply on retrieved reservation items.
+ */
+export interface FilterableReservationItemProps {
+  /**
+   * The IDs to filter reservation items by.
+   */
+  id?: string | string[]
+  /**
+   * @ignore
+   *
+   * @privateRemark
+   * This property is not used.
+   */
+  type?: string | string[]
+  /**
+   * Filter reservation items by the ID of their associated line item.
+   */
+  line_item_id?: string | string[]
+  /**
+   * Filter reservation items by the ID of their associated inventory item.
+   */
+  inventory_item_id?: string | string[]
+  /**
+   * Filter reservation items by the ID of their associated location.
+   */
+  location_id?: string | string[]
+  /**
+   * Description filters to apply on the reservation items' `description` attribute.
+   */
+  description?: string | StringComparisonOperator
+  /**
+   * The "created by" values to filter reservation items by.
+   */
+  created_by?: string | string[]
+  /**
+   * Filters to apply on the reservation items' `quantity` attribute.
+   */
+  quantity?: number | NumericalComparisonOperator
+}
--- a/packages/types/src/inventory/index.ts
+++ b/packages/types/src/inventory/index.ts
@@ -1,2 +1,4 @@
+export * as InventoryNext from "./bundle"
 export * from "./common"
 export * from "./service"
+export * from "./service-next"
--- a/packages/types/src/inventory/mutations/index.ts
+++ b/packages/types/src/inventory/mutations/index.ts
@@ -0,0 +1,3 @@
+export * from "./inventory-item"
+export * from "./inventory-level"
+export * from "./reservation-item"
--- a/packages/types/src/inventory/mutations/inventory-item.ts
+++ b/packages/types/src/inventory/mutations/inventory-item.ts
@@ -0,0 +1,67 @@
+export interface UpdateInventoryItemInput
+  extends Partial<CreateInventoryItemInput> {
+  id: string
+}
+/**
+ * @interface
+ *
+ * The details of the inventory item to be created.
+ */
+export interface CreateInventoryItemInput {
+  /**
+   * The SKU of the inventory item.
+   */
+  sku?: string | null
+  /**
+   * The origin country of the inventory item.
+   */
+  origin_country?: string | null
+  /**
+   * The MID code of the inventory item.
+   */
+  mid_code?: string | null
+  /**
+   * The material of the inventory item.
+   */
+  material?: string | null
+  /**
+   * The weight of the inventory item.
+   */
+  weight?: number | null
+  /**
+   * The length of the inventory item.
+   */
+  length?: number | null
+  /**
+   * The height of the inventory item.
+   */
+  height?: number | null
+  /**
+   * The width of the inventory item.
+   */
+  width?: number | null
+  /**
+   * The title of the inventory item.
+   */
+  title?: string | null
+  /**
+   * The description of the inventory item.
+   */
+  description?: string | null
+  /**
+   * The thumbnail of the inventory item.
+   */
+  thumbnail?: string | null
+  /**
+   * Holds custom data in key-value pairs.
+   */
+  metadata?: Record<string, unknown> | null
+  /**
+   * The HS code of the inventory item.
+   */
+  hs_code?: string | null
+  /**
+   * Whether the inventory item requires shipping.
+   */
+  requires_shipping?: boolean
+}
--- a/packages/types/src/inventory/mutations/inventory-level.ts
+++ b/packages/types/src/inventory/mutations/inventory-level.ts
@@ -0,0 +1,58 @@
+export interface CreateInventoryLevelInput {
+  /**
+   * The ID of the associated inventory item.
+   */
+  inventory_item_id: string
+  /**
+   * The ID of the associated location.
+   */
+  location_id: string
+  /**
+   * The stocked quantity of the associated inventory item in the associated location.
+   */
+  stocked_quantity: number
+  /**
+   * The reserved quantity of the associated inventory item in the associated location.
+   */
+  reserved_quantity?: number
+  /**
+   * The incoming quantity of the associated inventory item in the associated location.
+   */
+  incoming_quantity?: number
+}
+
+/**
+ * @interface
+ *
+ * The attributes to update in an inventory level.
+ */
+export interface UpdateInventoryLevelInput {
+  /**
+   * id of the inventory level to update
+   */
+  id: string
+  /**
+   * The stocked quantity of the associated inventory item in the associated location.
+   */
+  stocked_quantity?: number
+  /**
+   * The incoming quantity of the associated inventory item in the associated location.
+   */
+  incoming_quantity?: number
+}
+
+/**
+ * @interface
+ *
+ * The attributes to update in an inventory level. The inventory level is identified by the IDs of its associated inventory item and location.
+ */
+export type BulkUpdateInventoryLevelInput = {
+  /**
+   * The ID of the associated inventory level.
+   */
+  inventory_item_id: string
+  /**
+   * The ID of the associated location.
+   */
+  location_id: string
+} & UpdateInventoryLevelInput
--- a/packages/types/src/inventory/mutations/reservation-item.ts
+++ b/packages/types/src/inventory/mutations/reservation-item.ts
@@ -0,0 +1,70 @@
+/**
+ * @interface
+ *
+ * The attributes to update in a reservation item.
+ */
+export interface UpdateReservationItemInput {
+  id: string
+  /**
+   * The reserved quantity.
+   */
+  quantity?: number
+  /**
+   * The ID of the associated location.
+   */
+  location_id?: string
+  /**
+   * The description of the reservation item.
+   */
+  description?: string
+  /**
+   * Holds custom data in key-value pairs.
+   */
+  metadata?: Record<string, unknown> | null
+}
+
+/**
+ * @interface
+ *
+ * The details of the reservation item to be created.
+ */
+export interface CreateReservationItemInput {
+  /**
+   * The ID of the associated line item.
+   */
+  line_item_id?: string
+  /**
+   * The ID of the associated inventory item.
+   */
+  inventory_item_id: string
+  /**
+   * The ID of the associated location.
+   */
+  location_id: string
+  /**
+   * The reserved quantity.
+   */
+  quantity: number
+  /**
+   * The description of the reservation.
+   */
+  description?: string
+  /**
+   * The user or system that created the reservation. Can be any form of identification string.
+   */
+  created_by?: string
+  /**
+   * An ID associated with an external third-party system that the reservation item is connected to.
+   */
+  external_id?: string
+  /**
+   * Holds custom data in key-value pairs.
+   */
+  metadata?: Record<string, unknown> | null
+}
+
+export interface ReserveQuantityContext {
+  locationId?: string
+  lineItemId?: string
+  salesChannelId?: string | null
+}
--- a/packages/types/src/inventory/service-next.ts
+++ b/packages/types/src/inventory/service-next.ts
@@ -0,0 +1,963 @@
+import { RestoreReturn, SoftDeleteReturn } from "../dal"
+
+import { Context } from "../shared-context"
+import { FindConfig } from "../common"
+import { IModuleService } from "../modules-sdk"
+import { InventoryNext } from "."
+
+/**
+ * The main service interface for the inventory module.
+ */
+export interface IInventoryServiceNext extends IModuleService {
+  /**
+   * This method is used to retrieve a paginated list of inventory items along with the total count of available inventory items satisfying the provided filters.
+   * @param {FilterableInventoryItemProps} selector - The filters to apply on the retrieved inventory items.
+   * @param {FindConfig<InventoryItemDTO>} config -
+   * The configurations determining how the inventory items are retrieved. Its properties, such as `select` or `relations`, accept the
+   * attributes or relations associated with a inventory item.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @return {Promise<[InventoryItemDTO[], number]>} The list of inventory items along with the total count.
+   *
+   * @example
+   * To retrieve a list of inventory items using their IDs:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveInventoryItems (ids: string[]) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const [inventoryItems, count] = await inventoryModule.listInventoryItems({
+   *     id: ids
+   *   })
+   *
+   *   // do something with the inventory items or return them
+   * }
+   * ```
+   *
+   * To specify relations that should be retrieved within the inventory items:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveInventoryItems (ids: string[]) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const [inventoryItems, count] = await inventoryModule.listInventoryItems({
+   *     id: ids
+   *   }, {
+   *     relations: ["inventory_level"]
+   *   })
+   *
+   *   // do something with the inventory items or return them
+   * }
+   * ```
+   *
+   * By default, only the first `10` records are retrieved. You can control pagination by specifying the `skip` and `take` properties of the `config` parameter:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveInventoryItems (ids: string[], skip: number, take: number) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const [inventoryItems, count] = await inventoryModule.listInventoryItems({
+   *     id: ids
+   *   }, {
+   *     relations: ["inventory_level"],
+   *     skip,
+   *     take
+   *   })
+   *
+   *   // do something with the inventory items or return them
+   * }
+   * ```
+   */
+  list(
+    selector: InventoryNext.FilterableInventoryItemProps,
+    config?: FindConfig<InventoryNext.InventoryItemDTO>,
+    context?: Context
+  ): Promise<InventoryNext.InventoryItemDTO[]>
+
+  listAndCount(
+    selector: InventoryNext.FilterableInventoryItemProps,
+    config?: FindConfig<InventoryNext.InventoryItemDTO>,
+    context?: Context
+  ): Promise<[InventoryNext.InventoryItemDTO[], number]>
+
+  /**
+   * This method is used to retrieve a paginated list of reservation items along with the total count of available reservation items satisfying the provided filters.
+   * @param {FilterableReservationItemProps} selector - The filters to apply on the retrieved reservation items.
+   * @param {FindConfig<ReservationItemDTO>} config -
+   * The configurations determining how the reservation items are retrieved. Its properties, such as `select` or `relations`, accept the
+   * attributes or relations associated with a reservation item.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @return {Promise<[ReservationItemDTO[], number]>} The list of reservation items along with the total count.
+   *
+   * @example
+   * To retrieve a list of reservation items using their IDs:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveReservationItems (ids: string[]) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const [reservationItems, count] = await inventoryModule.listReservationItems({
+   *     id: ids
+   *   })
+   *
+   *   // do something with the reservation items or return them
+   * }
+   * ```
+   *
+   * To specify relations that should be retrieved within the reservation items:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveReservationItems (ids: string[]) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const [reservationItems, count] = await inventoryModule.listReservationItems({
+   *     id: ids
+   *   }, {
+   *     relations: ["inventory_item"]
+   *   })
+   *
+   *   // do something with the reservation items or return them
+   * }
+   * ```
+   *
+   * By default, only the first `10` records are retrieved. You can control pagination by specifying the `skip` and `take` properties of the `config` parameter:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveReservationItems (ids: string[], skip: number, take: number) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const [reservationItems, count] = await inventoryModule.listReservationItems({
+   *     id: ids
+   *   }, {
+   *     relations: ["inventory_item"],
+   *     skip,
+   *     take
+   *   })
+   *
+   *   // do something with the reservation items or return them
+   * }
+   * ```
+   */
+  listReservationItems(
+    selector: InventoryNext.FilterableReservationItemProps,
+    config?: FindConfig<InventoryNext.ReservationItemDTO>,
+    context?: Context
+  ): Promise<InventoryNext.ReservationItemDTO[]>
+
+  listAndCountReservationItems(
+    selector: InventoryNext.FilterableReservationItemProps,
+    config?: FindConfig<InventoryNext.ReservationItemDTO>,
+    context?: Context
+  ): Promise<[InventoryNext.ReservationItemDTO[], number]>
+
+  /**
+   * This method is used to retrieve a paginated list of inventory levels along with the total count of available inventory levels satisfying the provided filters.
+   * @param {FilterableInventoryLevelProps} selector - The filters to apply on the retrieved inventory levels.
+   * @param {FindConfig<InventoryLevelDTO>} config -
+   * The configurations determining how the inventory levels are retrieved. Its properties, such as `select` or `relations`, accept the
+   * attributes or relations associated with a inventory level.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @return {Promise<[InventoryLevelDTO[], number]>} The list of inventory levels along with the total count.
+   *
+   * @example
+   * To retrieve a list of inventory levels using their IDs:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveInventoryLevels (inventoryItemIds: string[]) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const [inventoryLevels, count] = await inventoryModule.listInventoryLevels({
+   *     inventory_item_id: inventoryItemIds
+   *   })
+   *
+   *   // do something with the inventory levels or return them
+   * }
+   * ```
+   *
+   * To specify relations that should be retrieved within the inventory levels:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveInventoryLevels (inventoryItemIds: string[]) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const [inventoryLevels, count] = await inventoryModule.listInventoryLevels({
+   *     inventory_item_id: inventoryItemIds
+   *   }, {
+   *     relations: ["inventory_item"]
+   *   })
+   *
+   *   // do something with the inventory levels or return them
+   * }
+   * ```
+   *
+   * By default, only the first `10` records are retrieved. You can control pagination by specifying the `skip` and `take` properties of the `config` parameter:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveInventoryLevels (inventoryItemIds: string[], skip: number, take: number) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const [inventoryLevels, count] = await inventoryModule.listInventoryLevels({
+   *     inventory_item_id: inventoryItemIds
+   *   }, {
+   *     relations: ["inventory_item"],
+   *     skip,
+   *     take
+   *   })
+   *
+   *   // do something with the inventory levels or return them
+   * }
+   * ```
+   */
+  listInventoryLevels(
+    selector: InventoryNext.FilterableInventoryLevelProps,
+    config?: FindConfig<InventoryNext.InventoryLevelDTO>,
+    context?: Context
+  ): Promise<InventoryNext.InventoryLevelDTO[]>
+
+  listAndCountInventoryLevels(
+    selector: InventoryNext.FilterableInventoryLevelProps,
+    config?: FindConfig<InventoryNext.InventoryLevelDTO>,
+    context?: Context
+  ): Promise<[InventoryNext.InventoryLevelDTO[], number]>
+
+  /**
+   * This method is used to retrieve an inventory item by its ID
+   *
+   * @param {string} inventoryItemId - The ID of the inventory item to retrieve.
+   * @param {FindConfig<InventoryItemDTO>} config -
+   * The configurations determining how the inventory item is retrieved. Its properties, such as `select` or `relations`, accept the
+   * attributes or relations associated with a inventory item.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<InventoryItemDTO>} The retrieved inventory item.
+   *
+   * @example
+   * A simple example that retrieves a inventory item by its ID:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveInventoryItem (id: string) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const inventoryItem = await inventoryModule.retrieveInventoryItem(id)
+   *
+   *   // do something with the inventory item or return it
+   * }
+   * ```
+   *
+   * To specify relations that should be retrieved:
+   *
+   * ```ts
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveInventoryItem (id: string) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const inventoryItem = await inventoryModule.retrieveInventoryItem(id, {
+   *     relations: ["inventory_level"]
+   *   })
+   *
+   *   // do something with the inventory item or return it
+   * }
+   * ```
+   */
+  retrieve(
+    inventoryItemId: string,
+    config?: FindConfig<InventoryNext.InventoryItemDTO>,
+    context?: Context
+  ): Promise<InventoryNext.InventoryItemDTO>
+
+  /**
+   * This method is used to retrieve an inventory level for an inventory item and a location.
+   *
+   * @param {string} inventoryItemId - The ID of the inventory item.
+   * @param {string} locationId - The ID of the location.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<InventoryLevelDTO>} The retrieved inventory level.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveInventoryLevel (
+   *   inventoryItemId: string,
+   *   locationId: string
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const inventoryLevel = await inventoryModule.retrieveInventoryLevel(
+   *     inventoryItemId,
+   *     locationId
+   *   )
+   *
+   *   // do something with the inventory level or return it
+   * }
+   */
+  retrieveInventoryLevelByItemAndLocation(
+    inventoryItemId: string,
+    locationId: string,
+    context?: Context
+  ): Promise<InventoryNext.InventoryLevelDTO>
+
+  retrieveInventoryLevel(
+    inventoryLevelId: string,
+    config?: FindConfig<InventoryNext.InventoryLevelDTO>,
+    context?: Context
+  ): Promise<InventoryNext.InventoryLevelDTO>
+
+  /**
+   * This method is used to retrieve a reservation item by its ID.
+   *
+   * @param {string} reservationId - The ID of the reservation item.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<ReservationItemDTO>} The retrieved reservation item.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveReservationItem (id: string) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const reservationItem = await inventoryModule.retrieveReservationItem(id)
+   *
+   *   // do something with the reservation item or return it
+   * }
+   */
+  retrieveReservationItem(
+    reservationId: string,
+    config?: FindConfig<InventoryNext.ReservationItemDTO>,
+    context?: Context
+  ): Promise<InventoryNext.ReservationItemDTO>
+
+  /**
+   * This method is used to create reservation items.
+   *
+   * @param {CreateReservationItemInput[]} input - The details of the reservation items to create.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns { Promise<ReservationItemDTO[]>} The created reservation items' details.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function createReservationItems (items: {
+   *   inventory_item_id: string,
+   *   location_id: string,
+   *   quantity: number
+   * }[]) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const reservationItems = await inventoryModule.createReservationItems(
+   *     items
+   *   )
+   *
+   *   // do something with the reservation items or return them
+   * }
+   */
+  createReservationItems(
+    input: InventoryNext.CreateReservationItemInput[],
+    context?: Context
+  ): Promise<InventoryNext.ReservationItemDTO[]>
+  createReservationItems(
+    input: InventoryNext.CreateReservationItemInput,
+    context?: Context
+  ): Promise<InventoryNext.ReservationItemDTO>
+
+  /**
+   * This method is used to create inventory items.
+   *
+   * @param {CreateInventoryItemInput[]} input - The details of the inventory items to create.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<InventoryItemDTO[]>} The created inventory items' details.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function createInventoryItems (items: {
+   *   sku: string,
+   *   requires_shipping: boolean
+   * }[]) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const inventoryItems = await inventoryModule.createInventoryItems(
+   *     items
+   *   )
+   *
+   *   // do something with the inventory items or return them
+   * }
+   */
+  create(
+    input: InventoryNext.CreateInventoryItemInput[],
+    context?: Context
+  ): Promise<InventoryNext.InventoryItemDTO[]>
+  create(
+    input: InventoryNext.CreateInventoryItemInput,
+    context?: Context
+  ): Promise<InventoryNext.InventoryItemDTO>
+
+  /**
+   * This method is used to create inventory levels.
+   *
+   * @param {CreateInventoryLevelInput[]} data - The details of the inventory levels to create.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<InventoryLevelDTO[]>} The created inventory levels' details.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function createInventoryLevels (items: {
+   *   inventory_item_id: string
+   *   location_id: string
+   *   stocked_quantity: number
+   * }[]) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const inventoryLevels = await inventoryModule.createInventoryLevels(
+   *     items
+   *   )
+   *
+   *   // do something with the inventory levels or return them
+   * }
+   */
+  createInventoryLevels(
+    data: InventoryNext.CreateInventoryLevelInput[],
+    context?: Context
+  ): Promise<InventoryNext.InventoryLevelDTO[]>
+  createInventoryLevels(
+    data: InventoryNext.CreateInventoryLevelInput,
+    context?: Context
+  ): Promise<InventoryNext.InventoryLevelDTO>
+
+  /**
+   * This method is used to update inventory levels. Each inventory level is identified by the IDs of its associated inventory item and location.
+   *
+   * @param {BulkUpdateInventoryLevelInput} updates - The attributes to update in each inventory level.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<InventoryLevelDTO[]>} The updated inventory levels' details.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function updateInventoryLevels (items: {
+   *   inventory_item_id: string,
+   *   location_id: string,
+   *   stocked_quantity: number
+   * }[]) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const inventoryLevels = await inventoryModule.updateInventoryLevels(
+   *     items
+   *   )
+   *
+   *   // do something with the inventory levels or return them
+   * }
+   */
+  updateInventoryLevels(
+    updates: InventoryNext.BulkUpdateInventoryLevelInput[],
+    context?: Context
+  ): Promise<InventoryNext.InventoryLevelDTO[]>
+  updateInventoryLevels(
+    updates: InventoryNext.BulkUpdateInventoryLevelInput,
+    context?: Context
+  ): Promise<InventoryNext.InventoryLevelDTO>
+
+  /**
+   * This method is used to update an inventory item.
+   *
+   * @param {string} inventoryItemId - The ID of the inventory item.
+   * @param {Partial<CreateInventoryItemInput>} input - The attributes to update in the inventory item.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<InventoryItemDTO>} The updated inventory item's details.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function updateInventoryItem (
+   *   inventoryItemId: string,
+   *   sku: string
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const inventoryItem = await inventoryModule.updateInventoryItem(
+   *     inventoryItemId,
+   *     {
+   *       sku
+   *     }
+   *   )
+   *
+   *   // do something with the inventory item or return it
+   * }
+   */
+  update(
+    input: InventoryNext.UpdateInventoryItemInput,
+    context?: Context
+  ): Promise<InventoryNext.InventoryItemDTO>
+  update(
+    input: InventoryNext.UpdateInventoryItemInput[],
+    context?: Context
+  ): Promise<InventoryNext.InventoryItemDTO[]>
+
+  /**
+   * This method is used to update a reservation item.
+   *
+   * @param {string} reservationItemId - The ID of the reservation item.
+   * @param {UpdateReservationItemInput} input - The attributes to update in the reservation item.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<ReservationItemDTO>} The updated reservation item.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function updateReservationItem (
+   *   reservationItemId: string,
+   *   quantity: number
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const reservationItem = await inventoryModule.updateReservationItem(
+   *     reservationItemId,
+   *     {
+   *       quantity
+   *     }
+   *   )
+   *
+   *   // do something with the reservation item or return it
+   * }
+   */
+  updateReservationItems(
+    input: InventoryNext.UpdateReservationItemInput,
+    context?: Context
+  ): Promise<InventoryNext.ReservationItemDTO>
+  updateReservationItems(
+    input: InventoryNext.UpdateReservationItemInput[],
+    context?: Context
+  ): Promise<InventoryNext.ReservationItemDTO[]>
+
+  /**
+   * This method is used to delete the reservation items associated with a line item or multiple line items.
+   *
+   * @param {string | string[]} lineItemId - The ID(s) of the line item(s).
+   * @param {Context} context - A context used to share re9sources, such as transaction manager, between the application and the module.
+   * @returns {Promise<void>} Resolves when the reservation items are successfully deleted.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function deleteReservationItemsByLineItem (
+   *   lineItemIds: string[]
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   await inventoryModule.deleteReservationItemsByLineItem(
+   *     lineItemIds
+   *   )
+   * }
+   */
+  deleteReservationItemsByLineItem(
+    lineItemId: string | string[],
+    context?: Context
+  ): Promise<void>
+
+  /**
+   * This method is used to delete a reservation item or multiple reservation items by their IDs.
+   *
+   * @param {string | string[]} reservationItemId - The ID(s) of the reservation item(s) to delete.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<void>} Resolves when the reservation item(s) are successfully deleted.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function deleteReservationItems (
+   *   reservationItemIds: string[]
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   await inventoryModule.deleteReservationItem(
+   *     reservationItemIds
+   *   )
+   * }
+   */
+  deleteReservationItems(
+    reservationItemId: string | string[],
+    context?: Context
+  ): Promise<void>
+
+  /**
+   * This method is used to delete an inventory item or multiple inventory items. The inventory items are only soft deleted and can be restored using the
+   * {@link restoreInventoryItem} method.
+   *
+   * @param {string | string[]} inventoryItemId - The ID(s) of the inventory item(s) to delete.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<void>} Resolves when the inventory item(s) are successfully deleted.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function deleteInventoryItem (
+   *   inventoryItems: string[]
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   await inventoryModule.deleteInventoryItem(
+   *     inventoryItems
+   *   )
+   * }
+   */
+  delete(inventoryItemId: string | string[], context?: Context): Promise<void>
+
+  /**
+   * Soft delete inventory items
+   * @param inventoryItemIds
+   * @param config
+   * @param sharedContext
+   */
+  softDelete<TReturnableLinkableKeys extends string = string>(
+    inventoryItemIds: string[],
+    config?: SoftDeleteReturn<TReturnableLinkableKeys>,
+    sharedContext?: Context
+  ): Promise<Record<string, string[]> | void>
+  /**
+   * This method is used to restore an inventory item or multiple inventory items that were previously deleted using the {@link deleteInventoryItem} method.
+   *
+   * @param {string[]} inventoryItemId - The ID(s) of the inventory item(s) to restore.
+   * @param {RestoreReturn<TReturnableLinkableKeys>} config - Restore config
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<void>} Resolves when the inventory item(s) are successfully restored.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function restoreInventoryItem (
+   *   inventoryItems: string[]
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   await inventoryModule.restoreInventoryItem(
+   *     inventoryItems
+   *   )
+   * }
+   */
+  restore<TReturnableLinkableKeys extends string = string>(
+    inventoryItemIds: string[],
+    config?: RestoreReturn<TReturnableLinkableKeys>,
+    sharedContext?: Context
+  ): Promise<Record<string, string[]> | void>
+
+  /**
+   * This method deletes the inventory item level(s) for the ID(s) of associated location(s).
+   *
+   * @param {string | string[]} locationId - The ID(s) of the associated location(s).
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<void>} Resolves when the inventory item level(s) are successfully restored.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function deleteInventoryItemLevelByLocationId (
+   *   locationIds: string[]
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   await inventoryModule.deleteInventoryItemLevelByLocationId(
+   *     locationIds
+   *   )
+   * }
+   */
+  deleteInventoryItemLevelByLocationId(
+    locationId: string | string[],
+    context?: Context
+  ): Promise<[object[], Record<string, unknown[]>]>
+
+  /**
+   * This method deletes reservation item(s) by the ID(s) of associated location(s).
+   *
+   * @param {string | string[]} locationId - The ID(s) of the associated location(s).
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<void>} Resolves when the reservation item(s) are successfully restored.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function deleteReservationItemByLocationId (
+   *   locationIds: string[]
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   await inventoryModule.deleteReservationItemByLocationId(
+   *     locationIds
+   *   )
+   * }
+   */
+  deleteReservationItemByLocationId(
+    locationId: string | string[],
+    context?: Context
+  ): Promise<void>
+
+  /**
+   * This method is used to delete an inventory level. The inventory level is identified by the IDs of its associated inventory item and location.
+   *
+   * @param {string} inventoryItemId - The ID of the associated inventory item.
+   * @param {string} locationId - The ID of the associated location.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<void>} Resolves when the inventory level(s) are successfully restored.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function deleteInventoryLevel (
+   *   inventoryItemId: string,
+   *   locationId: string
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   await inventoryModule.deleteInventoryLevel(
+   *     inventoryItemId,
+   *     locationId
+   *   )
+   * }
+   */
+  deleteInventoryLevel(
+    inventoryItemId: string,
+    locationId: string,
+    context?: Context
+  ): Promise<void>
+
+  /**
+   * This method is used to adjust the inventory level's stocked quantity. The inventory level is identified by the IDs of its associated inventory item and location.
+   *
+   * @param {string} inventoryItemId - The ID of the associated inventory item.
+   * @param {string} locationId - The ID of the associated location.
+   * @param {number} adjustment - A positive or negative number used to adjust the inventory level's stocked quantity.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<InventoryLevelDTO>} The inventory level's details.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function adjustInventory (
+   *   inventoryItemId: string,
+   *   locationId: string,
+   *   adjustment: number
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const inventoryLevel = await inventoryModule.adjustInventory(
+   *     inventoryItemId,
+   *     locationId,
+   *     adjustment
+   *   )
+   *
+   *   // do something with the inventory level or return it.
+   * }
+   */
+  adjustInventory(
+    inventoryItemId: string,
+    locationId: string,
+    adjustment: number,
+    context?: Context
+  ): Promise<InventoryNext.InventoryLevelDTO>
+
+  /**
+   * This method is used to confirm whether the specified quantity of an inventory item is available in the specified locations.
+   *
+   * @param {string} inventoryItemId - The ID of the inventory item to check its availability.
+   * @param {string[]} locationIds - The IDs of the locations to check the quantity availability in.
+   * @param {number} quantity - The quantity to check if available for the inventory item in the specified locations.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<boolean>} Whether the specified quantity is available for the inventory item in the specified locations.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function confirmInventory (
+   *   inventoryItemId: string,
+   *   locationIds: string[],
+   *   quantity: number
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   return await inventoryModule.confirmInventory(
+   *     inventoryItemId,
+   *     locationIds,
+   *     quantity
+   *   )
+   * }
+   */
+  confirmInventory(
+    inventoryItemId: string,
+    locationIds: string[],
+    quantity: number,
+    context?: Context
+  ): Promise<boolean>
+
+  /**
+   * This method is used to retrieve the available quantity of an inventory item within the specified locations.
+   *
+   * @param {string} inventoryItemId - The ID of the inventory item to retrieve its quantity.
+   * @param {string[]} locationIds - The IDs of the locations to retrieve the available quantity from.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<number>} The available quantity of the inventory item in the specified locations.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveAvailableQuantity (
+   *   inventoryItemId: string,
+   *   locationIds: string[],
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const quantity = await inventoryModule.retrieveAvailableQuantity(
+   *     inventoryItemId,
+   *     locationIds,
+   *   )
+   *
+   *   // do something with the quantity or return it
+   * }
+   */
+  retrieveAvailableQuantity(
+    inventoryItemId: string,
+    locationIds: string[],
+    context?: Context
+  ): Promise<number>
+
+  /**
+   * This method is used to retrieve the stocked quantity of an inventory item within the specified locations.
+   *
+   * @param {string} inventoryItemId - The ID of the inventory item to retrieve its stocked quantity.
+   * @param {string[]} locationIds - The IDs of the locations to retrieve the stocked quantity from.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<number>} The stocked quantity of the inventory item in the specified locations.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveStockedQuantity (
+   *   inventoryItemId: string,
+   *   locationIds: string[],
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const quantity = await inventoryModule.retrieveStockedQuantity(
+   *     inventoryItemId,
+   *     locationIds,
+   *   )
+   *
+   *   // do something with the quantity or return it
+   * }
+   */
+  retrieveStockedQuantity(
+    inventoryItemId: string,
+    locationIds: string[],
+    context?: Context
+  ): Promise<number>
+
+  /**
+   * This method is used to retrieve the reserved quantity of an inventory item within the specified locations.
+   *
+   * @param {string} inventoryItemId - The ID of the inventory item to retrieve its reserved quantity.
+   * @param {string[]} locationIds - The IDs of the locations to retrieve the reserved quantity from.
+   * @param {Context} context - A context used to share resources, such as transaction manager, between the application and the module.
+   * @returns {Promise<number>} The reserved quantity of the inventory item in the specified locations.
+   *
+   * @example
+   * import {
+   *   initialize as initializeInventoryModule,
+   * } from "@medusajs/inventory"
+   *
+   * async function retrieveReservedQuantity (
+   *   inventoryItemId: string,
+   *   locationIds: string[],
+   * ) {
+   *   const inventoryModule = await initializeInventoryModule({})
+   *
+   *   const quantity = await inventoryModule.retrieveReservedQuantity(
+   *     inventoryItemId,
+   *     locationIds,
+   *   )
+   *
+   *   // do something with the quantity or return it
+   * }
+   */
+  retrieveReservedQuantity(
+    inventoryItemId: string,
+    locationIds: string[],
+    context?: Context
+  ): Promise<number>
+}
--- a/packages/utils/src/bundles.ts
+++ b/packages/utils/src/bundles.ts
@@ -12,4 +12,5 @@ export * as PromotionUtils from "./promotion"
 export * as SearchUtils from "./search"
 export * as ShippingProfileUtils from "./shipping"
 export * as UserUtils from "./user"
+export * as InventoryUtils from "./inventory"
 export * as ApiKeyUtils from "./api-key"
--- a/packages/utils/src/common/tests/partition-array.spec.ts
+++ b/packages/utils/src/common/tests/partition-array.spec.ts
@@ -0,0 +1,12 @@
+import { partitionArray } from "../../../dist"
+
+describe("partitionArray", function () {
+  it("should split array according to predicate", function () {
+    const res = partitionArray([1, 2, 3, 4, 5], (x) => x % 2 === 0)
+
+    expect(res).toEqual([
+      [2, 4],
+      [1, 3, 5],
+    ])
+  })
+})
--- a/packages/utils/src/common/index.ts
+++ b/packages/utils/src/common/index.ts
@@ -32,6 +32,7 @@ export * from "./medusa-container"
 export * from "./object-from-string-path"
 export * from "./object-to-string-path"
 export * from "./optional-numeric-serializer"
+export * from "./partition-array"
 export * from "./pick-deep"
 export * from "./pick-value-from-object"
 export * from "./plurailze"
--- a/packages/utils/src/common/partition-array.ts
+++ b/packages/utils/src/common/partition-array.ts
@@ -0,0 +1,30 @@
+/**
+ * Partitions an array into two arrays based on a predicate function
+
+ * @example
+ * const result = partitionArray([1, 2, 3, 4, 5], (x) => x % 2 === 0)
+ * 
+ * console.log(result)
+ * 
+ * // output: [[2, 4], [1, 3, 5]]
+ *
+ * @param {T} input input array of type T
+ * @param {(T) => boolean} predicate function to use when split array elements
+ */
+export const partitionArray = <T>(
+  input: T[],
+  predicate: (T) => boolean
+): [T[], T[]] => {
+  return input.reduce(
+    ([pos, neg], currentElement) => {
+      if (predicate(currentElement)) {
+        pos.push(currentElement)
+      } else {
+        neg.push(currentElement)
+      }
+
+      return [pos, neg]
+    },
+    [[], []] as [T[], T[]]
+  )
+}
--- a/packages/utils/src/event-bus/common-events.ts
+++ b/packages/utils/src/event-bus/common-events.ts
@@ -2,6 +2,7 @@ export enum CommonEvents {
  CREATED = "created",
  UPDATED = "updated",
  DELETED = "deleted",
+  RESTORED = "restored",
  ATTACHED = "attached",
  DETACHED = "detached",
 }
--- a/packages/utils/src/index.ts
+++ b/packages/utils/src/index.ts
@@ -8,6 +8,7 @@ export * from "./event-bus"
 export * from "./exceptions"
 export * from "./feature-flags"
 export * from "./fulfillment"
+export * from "./inventory"
 export * from "./modules-sdk"
 export * from "./orchestration"
 export * from "./order"
--- a/packages/utils/src/inventory/events.ts
+++ b/packages/utils/src/inventory/events.ts
@@ -0,0 +1,14 @@
+import { CommonEvents } from "../event-bus"
+
+export const InventoryEvents = {
+  created: "inventory-item." + CommonEvents.CREATED,
+  updated: "inventory-item." + CommonEvents.UPDATED,
+  deleted: "inventory-item." + CommonEvents.DELETED,
+  restored: "inventory-item." + CommonEvents.RESTORED,
+  reservation_item_created: "reservation-item." + CommonEvents.CREATED,
+  reservation_item_updated: "reservation-item." + CommonEvents.UPDATED,
+  reservation_item_deleted: "reservation-item." + CommonEvents.DELETED,
+  inventory_level_deleted: "inventory-level." + CommonEvents.DELETED,
+  inventory_level_created: "inventory-level." + CommonEvents.CREATED,
+  inventory_level_updated: "inventory-level." + CommonEvents.UPDATED,
+}
--- a/packages/utils/src/inventory/index.ts
+++ b/packages/utils/src/inventory/index.ts
@@ -0,0 +1 @@
+export * from "./events"
--- a/packages/utils/src/modules-sdk/loaders/container-loader-factory.ts
+++ b/packages/utils/src/modules-sdk/loaders/container-loader-factory.ts
@@ -6,10 +6,11 @@ import {
  ModuleServiceInitializeOptions,
  RepositoryService,
 } from "@medusajs/types"
+
 import { asClass } from "awilix"
+import { internalModuleServiceFactory } from "../internal-module-service-factory"
 import { lowerCaseFirst } from "../../common"
 import { mikroOrmBaseRepositoryFactory } from "../../dal"
-import { internalModuleServiceFactory } from "../internal-module-service-factory"

 type RepositoryLoaderOptions = {
  moduleModels: Record<string, any>
--- a/yarn.lock
+++ b/yarn.lock
@@ -8311,6 +8311,31 @@ __metadata:
  languageName: unknown
  linkType: soft

+"@medusajs/inventory-next@workspace:packages/inventory-next":
+  version: 0.0.0-use.local
+  resolution: "@medusajs/inventory-next@workspace:packages/inventory-next"
+  dependencies:
+    "@medusajs/modules-sdk": ^1.12.4
+    "@medusajs/types": ^1.11.12
+    "@medusajs/utils": ^1.11.1
+    "@mikro-orm/cli": 5.9.7
+    "@mikro-orm/core": 5.9.7
+    "@mikro-orm/migrations": 5.9.7
+    "@mikro-orm/postgresql": 5.9.7
+    awilix: ^8.0.0
+    cross-env: ^5.2.1
+    dotenv: 16.4.5
+    jest: ^29.6.3
+    knex: 2.4.2
+    medusa-test-utils: ^1.1.40
+    rimraf: ^5.0.1
+    ts-jest: ^29.1.1
+    ts-node: ^10.9.1
+    tsc-alias: ^1.8.6
+    typescript: ^5.1.6
+  languageName: unknown
+  linkType: soft
+
 "@medusajs/inventory@workspace:^, @medusajs/inventory@workspace:packages/inventory":
  version: 0.0.0-use.local
  resolution: "@medusajs/inventory@workspace:packages/inventory"