and this is my code (index.js), (auth.js)

const express = require("express");
const dotenv = require("dotenv");
const mongoose = require("mongoose");
const authRoute = require("./routes/auth");
const app = express();

dotenv.config();
app.use(express.json());


mongoose.connect(process.env.MONGO_URL, {
    useNewUrlParser: true,
    useUnifiedTopology: true,
    useCreateIndex: true,
  }).then(console.log("Connected to MongoDB"))
  .catch((err) => console.log("err"));
app.use("/api/auth",authRoute );

app.use("/api/auth",authRoute);


app.listen("3000", () => {
  console.log("Backend is running.");
});

const router = require("express").Router();
const User = require("../models/User");

//REGISTER
router.post("/register", async (req, res) => {
  try {
    const newUser = new User({
      username: req.body.username,
      email: req.body.email,
      password: req.body.password,
    });

    const user = await newUser.save();
    res.status(200).json(user);
  } catch (err) {
    res.status(500).json(err);
  }
});

//LOGIN


module.exports = router;
and image of the postman result 

when I send the request postman posts empty curly brackets. I want to get the post data on the down of the body at the postman

screenshot of the postman

and this is what terminal logs result on the terminal

CodePudding user response：

You should check what receives in user object at const user = await newUser.save();

data would be in user.data

or use json instead,

 const user = await newUser.save();
    res.status(200).jsonp(user);

CodePudding user response：

.env file must be inside the root folder, not the outside