SyntaxError: (node:3680) ExperimentalWarning: The ESM module loader is experimental

I am just trying to setup a crud on node.js with mongodb. I am new and kind of following a tutorial.

getting the below error that seems unsolvable

SyntaxError: Invalid or unexpected token
    at wrapSafe (internal/modules/cjs/loader.js:1053:16)
    at Module._compile (internal/modules/cjs/loader.js:1101:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1157:10)
    at Module.load (internal/modules/cjs/loader.js:985:32)
    at Function.Module._load (internal/modules/cjs/loader.js:878:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
    at internal/main/run_main_module.js:17:47

here is my index.js

var express = require('express');
var path = require('path');
var bodyParser = require('body-parser');
var mongodb = require('mongodb');
 

var app = express();
var port = 3000;
 
app.get('/',(req,res)=>{res.send('hi')});
app.listen(port,()=> {console.log('server live @ '+port)});

here is my package.json

{
  "name": "nodementor",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "type": "module",
  "author": "krishna",
  "license": "ISC",
  "dependencies": {
    "body-parser": "^1.19.0",
    "express": "^4.17.1",
    "mongodb": "^3.6.0"
  }
}

So far tried adding "type": "module", in package.json which again gives out another error

(node:3680) ExperimentalWarning: The ESM module loader is experimental.
file:///D:/MEAN/nodementor/index.js:1

SyntaxError: Invalid or unexpected token
    at Loader.moduleStrategy (internal/modules/esm/translators.js:122:18)
    at async link (internal/modules/esm/module_job.js:42:21)