index.js

var http = require('http');
var request = require('request');

http.createServer(function (req, res) {
    request('https://ip.rootmos.io/ip', function (error, response, body) {
        res.write(body);
        res.end();
    });
}).listen(8080);

package.json

{
  "name": "node",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "dependencies": {
    "request": "^2.88.0"
  },
  "scripts": {
      "start": "node index.js"
  },
  "devDependencies": {},
  "author": "",
  "license": "ISC"
}