Get public IP address (wan IP address) in node

publicip.js

const https = require('https');
const options = {
  hostname: 'httpbin.org',
  port: 443,
  path: '/ip',
  method: 'GET'
}

const req = https.request(options, res => {
  res.on('data', d => {
    let yourWanIP = JSON.parse(d).origin;
    // do what you want to do with the IP address
    // ... eg. log it to the console
    console.log(yourWanIP);
  });
})

req.on('error', error => {
  console.error(error);
})

req.end();