fix: Remove undefined from events in update (#10170)

packages/modules/region/integration-tests/__tests__/region-module.spec.ts

@@ -1,7 +1,7 @@
 import { IRegionModuleService } from "@medusajs/framework/types"
 import { Module, Modules } from "@medusajs/framework/utils"
-import { RegionModuleService } from "@services"
 import { moduleIntegrationTestRunner } from "@medusajs/test-utils"
+import { RegionModuleService } from "@services"
 
 jest.setTimeout(30000)
 
@@ -403,6 +403,32 @@ moduleIntegrationTestRunner<IRegionModuleService>({
         expect(resp.countries).toHaveLength(2)
       })
 
+      it("should delete a region without countries", async () => {
+        const createdRegion = await service.createRegions({
+          name: "North America",
+          currency_code: "USD",
+          countries: [],
+        })
+
+        await service.softDeleteRegions([createdRegion.id])
+
+        const [deletedRegion] = await service.listRegions(
+          { id: createdRegion.id },
+          { withDeleted: true }
+        )
+
+        expect(deletedRegion).toEqual({
+          id: createdRegion.id,
+          name: createdRegion.name,
+          currency_code: createdRegion.currency_code,
+          metadata: null,
+          automatic_taxes: createdRegion.automatic_taxes,
+          created_at: expect.any(Date),
+          updated_at: expect.any(Date),
+          deleted_at: expect.any(Date),
+        })
+      })
+
       it("should unset the region ID on the country when soft deleting a region", async () => {
         const createdRegion = await service.createRegions({
           name: "North America",