Infinitely click around page

puppeteer-random-page.js

# yarn add puppeteer
# node ./puppeteer-random-page.js

const puppeteer = require('puppeteer');
const initialUrl = process.env.url || 'http://localhost:8080';

async function init() {
  const browser = await puppeteer.launch({ headless: true });
  return browser.newPage();
}

function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

function sleepBetween(lower, upper) {
  return sleep(lower + Math.floor(Math.random() * upper));
}

function getRandomLink() {
  const links = document.querySelectorAll('a[href^="/"]');
  const link = links[Math.floor(Math.random() * links.length)];
  return link.href;
}

async function run(page, url) {
  console.log(`Opening ${url}`);

  await Promise.all([
    page.waitForNavigation({ waitUntil: 'networkidle0', timeout: 60000 }),
    page.goto(url)
  ]);

  const nextUrl = await page.evaluate(getRandomLink);
  await sleepBetween(5000, 10000);
  return run(page, nextUrl);
}

init()
  .then(page => run(page, initialUrl))
  .catch(e => console.error(e));