pptr.proxy.js

const puppeteer = require('puppeteer');

// PROXY and PORT
const proxy = 'zproxy.lum-superproxy.io';
const port = 22225;

// USER and PASS
let proxyUsername = 'username';
const proxyPassword = 'password';

// This is luminati specific thing and not required for you in most cases
const session_id = (1000000 * Math.random()) | 0;
proxyUsername = proxyUsername + '-session-' + session_id;

(async () => {
  const browser = await puppeteer.launch({
    defaultViewport: false,
    headless: false,
    args: [
      `--proxy-server=${proxy}:${port}`, // Or whatever the address is
    ],
  });

  // get the initial tab instead of creating a new one
  const page = (await browser.pages())[0];

  // authenticate the browser to use your proxy
  await page.authenticate({ username: proxyUsername, password: proxyPassword });

  // check the ip
  await page.goto('https://www.wtfismyip.com/');
})();