Cannot read property 'connect' of undefined in env file - node.js

Question

const dotenv = require('dotenv');
const { mongoose } = require('mongoose');
// const bodyParser = require('body-parser');
const app = express();
app.use(express.json());
const DB = `mongodb+srv://${process.env.MONGO_DB_USER}:${process.env.MONGO_DB_PASSWORD}#cluster0.70g8h.mongodb.net/${process.env.MONGO_DB_DATABASE}?retryWrites=true&w=majority`
mongoose.connect( DB ,
{
useNewUrlParser: true,
useUnifiedTopology: true,
useFindAndModify: false,
useCreateIndex: true
})
.then( ()=>console.log('Connection Success ..'))
.catch( (err)=>console.log(' Not Connection Success'));
dotenv.config({path:'./config.env'});
app.get('/', (req, res,next) => {
res.status(200).json({
message:'Hello'
});
});
app.post('/data', (req, res,next) => {
res.status(200).json({
message: req.body
});
});
app.listen(process.env.PORT,()=>{
console.log(`Server is runing at the port : ${process.env.PORT}`);
})
Getting this error when using this code, I would like to know what is causing the error and any possible fixes. I am using atlas MongoDB
this is the output
D:\WebDevelopment.Ravi\Projects\mern_ecommerce\e-commerce-backend\src\index.server.js:9
mongoose.connect( DB ,
^
TypeError: Cannot read property 'connect' of undefined
at Object.<anonymous> (D:\WebDevelopment.Ravi\Projects\mern_ecommerce\e-commerce-backend\src\index.server.js:9:10)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
at internal/main/run_main_module.js:17:47
[nodemon] app crashed - waiting for file changes before starting..
Getting this error when using this code, I would like to know what is causing the error and any possible fixes. I am using atlas MongoDB

Answer 1

From ths docs Getting Started. It should be const mongoose = require('mongoose');

Answer 2

Try this, it should work:
const mongoose =require("mongoose");
require('dotenv').config();