index.js for sever

index.js

const express = require('express');
const bodyParser = require('body-parser');
const app = express();

const userController = require('./userController');

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));

app.post('/user', userController.createOrAddUser);


app.use((err, req, res, next) => {
  res
    .status(err.status || 500)
    .send({ status: err.status ? `${err.status}` : 500, message: err.message });
});

app.listen(3000, () => {
  console.log('listening on port 3000');
})