fix(medusa): Plugin loader must also check for TransactionBaseService (#1601)

packages/medusa/src/loaders/__tests__/plugins.spec.ts

@@ -13,6 +13,12 @@ const buildServiceTemplate = (name: string) => {
     export default class ${name}Service extends BaseService {}
   `
 }
+const buildTransactionBaseServiceServiceTemplate = (name: string) => {
+  return `
+    import { TransactionBaseService } from "${resolve(__dirname, "../../interfaces")}"
+    export default class ${name}Service extends TransactionBaseService {}
+  `
+}
 
 describe('plugins loader', () => {
   const container = createContainer() as MedusaContainer
@@ -30,6 +36,7 @@ describe('plugins loader', () => {
       mkdirSync(servicesTestTargetDirectoryPath, { mode: "777", recursive: true })
       writeFileSync(resolve(servicesTestTargetDirectoryPath, "test.js"), buildServiceTemplate("test"))
       writeFileSync(resolve(servicesTestTargetDirectoryPath, "test2.js"), buildServiceTemplate("test2"))
+      writeFileSync(resolve(servicesTestTargetDirectoryPath, "test3.js"), buildTransactionBaseServiceServiceTemplate("test3"))
       writeFileSync(resolve(servicesTestTargetDirectoryPath, "test2.js.map"), "map:file")
       writeFileSync(resolve(servicesTestTargetDirectoryPath, "test2.d.ts"), "export interface Test {}")
     })
@@ -51,11 +58,14 @@ describe('plugins loader', () => {
 
       const testService: (...args: unknown[]) => any = container.resolve("testService")
       const test2Service: (...args: unknown[]) => any = container.resolve("test2Service")
+      const test3Service: (...args: unknown[]) => any = container.resolve("test3Service")
 
       expect(testService).toBeTruthy()
       expect(testService.constructor.name).toBe("testService")
       expect(test2Service).toBeTruthy()
       expect(test2Service.constructor.name).toBe("test2Service")
+      expect(test3Service).toBeTruthy()
+      expect(test3Service.constructor.name).toBe("test3Service")
     })
   })
 })

packages/medusa/src/loaders/plugins.ts

@@ -2,7 +2,7 @@ import glob from "glob"
 import { Express } from "express"
 import { EntitySchema } from "typeorm"
 import {
-  BaseService,
+  BaseService as LegacyBaseService,
   PaymentService,
   FulfillmentService,
   NotificationService,
@@ -10,18 +10,17 @@ import {
   OauthService,
   SearchService,
 } from "medusa-interfaces"
-import { getConfigFile, createRequireFromPath } from "medusa-core-utils"
+import { createRequireFromPath } from "medusa-core-utils"
 import _ from "lodash"
 import path from "path"
 import fs from "fs"
 import { asValue, asClass, asFunction, aliasTo } from "awilix"
 import { sync as existsSync } from "fs-exists-cached"
 import {
-  AbstractFileService,
   AbstractTaxService,
   isFileService,
   isTaxCalculationStrategy,
-  TransactionBaseService,
+  TransactionBaseService as BaseService,
 } from "../interfaces"
 import formatRegistrationName from "../utils/format-registration-name"
 import {
@@ -297,11 +296,11 @@ export async function registerServices(
       const name = formatRegistrationName(fn)
 
       if (
-        !(loaded.prototype instanceof BaseService) &&
-        !(loaded.prototype instanceof TransactionBaseService)
+        !(loaded.prototype instanceof LegacyBaseService) &&
+        !(loaded.prototype instanceof BaseService)
       ) {
         const logger = container.resolve<Logger>("logger")
-        const message = `File must be a valid service implementation, please check ${fn}`
+        const message = `The class must be a valid service implementation, please check ${fn}`
         logger.error(message)
         throw new Error(message)
       }