controller_user.js

const makeValidation = require('@withvoid/make-validation');
const UserModel, { USER_TYPES } = require('../models/user.js');

module.exports = {
  onGetAllUsers: async (req, res) => {
    try {
      const users = await UserModel.getUsers();
      return res.status(200).json({ success: true, users });
    } catch (error) {
      return res.status(500).json({ success: false, error: error })
    }
    
  },
  onGetUserById: async (req, res) => {
    try {
      const user = await UserModel.getUserById(req.params.id);
      return res.status(200).json({ success: true, user });
    } catch (error) {
      return res.status(500).json({ success: false, error: error })
    }
  },
  onCreateUser: async (req, res) => {
    try {
      const validation = makeValidation(types =>({
        payload: req.body,
        checks: {
          firstName: { type: types.string },
          lastName: { type: types.string },
          type: { type: types.enum, options: { enum: USER_TYPES } },
        }
        }));

        if (!validation.success) return res.status(400).json(validation);

      const { firstName, lastName, type } = req.body;
      const user = await UserModel.createUser(firstName, lastName, type);
      return res.status(200).json({ success: true, user });
    } catch (error) {
      return res.status(500).json({ success: false, error: error })
    }
  },
  onDeleteUserById: async (req, res) => {
    try {
      const user = await UserModel.deleteByUserById(req.params.id);
      return res.status(200).json({
        success: true,
        message: `Deleted a count of ${user.deletedCount} user.`
      });
    } catch (error) {
      return res.status(500).json({ success: false, error: error })
    }
  },
};

error o n visual studio

C:\Users\SAMUEL\Documents\codes\chatapp\chatapp\controllers\user.js:2
const UserModel, { USER_TYPES } = require('../models/user.js');
      ^^^^^^^^^

SyntaxError: Missing initializer in const declaration
    at wrapSafe (internal/modules/cjs/loader.js:1054:16)
    at Module._compile (internal/modules/cjs/loader.js:1102:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)
    at Module.load (internal/modules/cjs/loader.js:986:32)
    at Function.Module._load (internal/modules/cjs/loader.js:879:14)
    at Module.require (internal/modules/cjs/loader.js:1026:19)
    at require (internal/modules/cjs/helpers.js:72:18)
    at Object.<anonymous> (C:\Users\SAMUEL\Documents\codes\chatapp\chatapp\routes\user.js:7:14)
    at Module._compile (internal/modules/cjs/loader.js:1138:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)
    at Module.load (internal/modules/cjs/loader.js:986:32)
    at Function.Module._load (internal/modules/cjs/loader.js:879:14)
    at Module.require (internal/modules/cjs/loader.js:1026:19)
    at require (internal/modules/cjs/helpers.js:72:18)
    at Object.<anonymous> (C:\Users\SAMUEL\Documents\codes\chatapp\chatapp\server\index.js:11:20)
    at Module._compile (internal/modules/cjs/loader.js:1138:30)
[nodemon] app crashed - waiting for file changes before starting...

routes_user.js

const express = require('express');

const router = express.Router();


//controllers
const user = require('../controllers/user.js');

router
    .get('/', user.onGetAllUsers)
    .post('/', user.onCreateUser)
    .get('/:id', user.onGetUserById)
    .delete('/:id', user.onDeleteUserById)


module.exports = router;

server_index.js

const http = require('http');
const express = require('express');
const logger = require('morgan');
const cors =require('cors');

// mongo connection
require('../config/mongo.js');

//routes

const userRouter = require('../routes/user.js');
/*
const indexRouter = require('../routes/index.js');

const chatRoomRouter = require('../routes/chatRoom.js');
const deleteRouter = require('../routes/delete.js');
*/
//middlewares
const { decode } = require('../middlewares/jwt.js')

const app = express();


const port = process.env.PORT || "3000";
app.set("port", port);

app.use(logger("dev"));
app.use(express.json());
app.use(express.urlencoded({ extended: false }))

app.use("/", indexRouter);
app.use("/users", userRouter);
/*
app.use("/room", decode, chatRoomRouter);
app.use("/delete", deleteRouter);
*/
// catching errors/error handling 
app.use('*', (req,res) => {
    return res.status(404).json({
        success:false,
        message: ' API endpoint doesnt exist'
    })

});

// creating http server 
 const server = http.createServer(app);
 server.listen(port);
 server.on("listening", () =>{
    console.log(`Listening on port :: http:/localhost:${port}/`)
 });

This is a similar issue to the one you were facing over the weekend. Because you're using commonjs (require syntax) you're unable to use the conveniences of import. The error you're facing is that const UserModel, breaks node's expectation that an = will follow it.

Try changing https://gist.github.com/Cool-sami12/c0f4a6f0aef8b64a1a78145096b588ce#file-controller_user-js-L2 to:

const UserModel = require('../models/user.js');
const { USER_TYPES } = UserModel;