diff --git a/packages/medusa/src/loaders/__tests__/plugins.spec.ts b/packages/medusa/src/loaders/__tests__/plugins.spec.ts
new file mode 100644
index 0000000000..e193a70d8c
--- /dev/null
+++ b/packages/medusa/src/loaders/__tests__/plugins.spec.ts
@@ -0,0 +1,61 @@
+import { createContainer, asValue } from "awilix"
+import { mkdirSync, rmSync, rmdirSync, writeFileSync } from "fs"
+import { resolve } from "path"
+import Logger from "../logger"
+import { registerServices } from "../plugins"
+import { MedusaContainer } from "../../types/global"
+
+const distTestTargetDirectorPath = resolve(__dirname, "__pluginsLoaderTest__")
+const servicesTestTargetDirectoryPath = resolve(distTestTargetDirectorPath, "services")
+const buildServiceTemplate = (name: string) => {
+  return `
+    import { BaseService } from "medusa-interfaces"
+    export default class ${name}Service extends BaseService {}
+  `
+}
+
+describe('plugins loader', () => {
+  const container = createContainer() as MedusaContainer
+  const pluginsDetails = {
+    resolve: resolve(__dirname, "__pluginsLoaderTest__"),
+    name: `project-plugin`,
+    id: "fakeId",
+    options: {},
+    version: '"fakeVersion',
+  }
+
+  describe("registerServices", function() {
+    beforeAll(() => {
+      container.register("logger", asValue(Logger))
+      mkdirSync(servicesTestTargetDirectoryPath, { mode: "777", recursive: true })
+      writeFileSync(resolve(servicesTestTargetDirectoryPath, "test.js"), buildServiceTemplate("test"))
+      writeFileSync(resolve(servicesTestTargetDirectoryPath, "test2.js"), buildServiceTemplate("test2"))
+      writeFileSync(resolve(servicesTestTargetDirectoryPath, "test2.js.map"), "map:file")
+      writeFileSync(resolve(servicesTestTargetDirectoryPath, "test2.d.ts"), "export interface Test {}")
+    })
+
+    afterAll(() => {
+      rmSync(distTestTargetDirectorPath, { recursive: true, force: true })
+      jest.clearAllMocks()
+    })
+
+    it('should load the services from the services directory but only js files', async () => {
+      let err;
+      try {
+        await registerServices(pluginsDetails, container)
+      } catch (e) {
+        err = e
+      }
+
+      expect(err).toBeFalsy()
+
+      const testService: (...args: unknown[]) => any = container.resolve("testService")
+      const test2Service: (...args: unknown[]) => any = container.resolve("test2Service")
+
+      expect(testService).toBeTruthy()
+      expect(testService.constructor.name).toBe("testService")
+      expect(test2Service).toBeTruthy()
+      expect(test2Service.constructor.name).toBe("test2Service")
+    })
+  })
+})
\ No newline at end of file
diff --git a/packages/medusa/src/loaders/plugins.ts b/packages/medusa/src/loaders/plugins.ts
index ae831ddbeb..7c24df9b17 100644
--- a/packages/medusa/src/loaders/plugins.ts
+++ b/packages/medusa/src/loaders/plugins.ts
@@ -245,8 +245,8 @@ function registerApi(
  *    registered
  * @return {void}
  */
-async function registerServices(pluginDetails: PluginDetails, container: MedusaContainer): Promise<void> {
-  const files = glob.sync(`${pluginDetails.resolve}/services/[!__]*`, {})
+export async function registerServices(pluginDetails: PluginDetails, container: MedusaContainer): Promise<void> {
+  const files = glob.sync(`${pluginDetails.resolve}/services/[!__]*.js`, {})
   await Promise.all(
     files.map(async (fn) => {
       const loaded = require(fn).default