fix

package.json

@@ -1,7 +1,7 @@
 {
   "name": "matrix-backend",
   "version": "1.0.0",
-  "type": "module",
+  "type": "commonjs",
   "main": "dist/index.js",
   "scripts": {
     "start": "cross-env NODE_ENV=development ts-node-dev --respawn --transpile-only src/index.ts",

src/services/db/UserService.ts

@@ -1,4 +1,3 @@
-import { connectToDatabase } from "./database.service";
 import { UpdateQuery } from "mongoose";
 import { CreateUserPayload, IUser, SpotifyConfig, UserModel } from "../../db/models/user";
 
@@ -9,7 +8,6 @@ export class UserService {
 
     public static async create(): Promise<UserService> {
         if (!this._instance) {
-            await connectToDatabase();
             this._instance = new UserService();
         }
         return this._instance;

tests/services/db/UserService.test.ts

@@ -37,14 +37,6 @@ describe("UserService", () => {
 
             expect(instance1).toBe(instance2);
         });
-
-        it("should connect to database only on first creation", async () => {
-
-            await UserService.create();
-            await UserService.create();
-
-            expect(mockedConnectToDatabase).toHaveBeenCalledTimes(1);
-        });
     });
 
     describe("updateUserById", () => {
@@ -57,11 +49,7 @@ describe("UserService", () => {
 
             const result = await userService.updateUserById(userId, updateData);
 
-            expect(mockedUserModel.findByIdAndUpdate).toHaveBeenCalledWith(
-                userId,
-                updateData,
-                { new: true }
-            );
+            expect(mockedUserModel.findByIdAndUpdate).toHaveBeenCalledWith(userId, updateData, { new: true });
             expect(result).toEqual(updatedUser);
         });
 
@@ -177,7 +165,7 @@ describe("UserService", () => {
             };
             mockedUserModel.create.mockResolvedValue(createdUserDocument as any);
 
-            const result = await userService.createUser(userData as any)
+            const result = await userService.createUser(userData as any);
 
             expect(mockedUserModel.create).toHaveBeenCalledWith(userData);
             expect(result).not.toHaveProperty("password");