Nodejs ReferenceError: require is not defined in ES module scope

 ReferenceError: require is not defined in ES module scope, you can use import instead
This file is being treated as an ES module because it has a '.js' file extension and 'C:\Users\conta\source\repos\NodeJs\Demo1\package.json' contains "type": "module". To treat it as a CommonJS scr
ipt, rename it to use the '.cjs' file extension.
    at file:///C:/Users/conta/source/repos/NodeJs/Demo1/index.js:2:15
    at ModuleJob.run (node:internal/modules/esm/module_job:198:25)
    at async Promise.all (index 0)
    at async ESMLoader.import (node:internal/modules/esm/loader:385:24)
    at async loadESM (node:internal/process/esm_loader:88:5)
    at async handleMainPromise (node:internal/modules/run_main:61:12)

 import fetch from "node-fetch";
var express = require('express');
var app = express();

app.get('/', async (req, res) =>  {
        const result = await getUser();
        console.log(result);
});

var server = app.listen(5000, function () {
    console.log('Server is running..');
});


async function getUser() {
    try {
      const response = await fetch('https://randomuser.me/api/');
  
      if (!response.ok) {
        throw new Error(`Error! status: ${response.status}`);
      }
  
      const result = await response.json();
      return result;
    } catch (err) {
      console.log(err);
    }
}