puppeteer2.js

const puppeteer = require('puppeteer');

// IIFE async pattern (more below)
(async () => {
  // opens the chromium browser
  const browser = await puppeteer.launch({ 
    headless: false, // when debugging we prefer seeing the browser in action
    slowMo: 250      // slow down puppeteer actions so we can see what's going on (in ms)
  });
  
  // create a new tab, which is represented by a 'page' object
  const page = await browser.newPage();
  
  // ask that tab to navigate to a specific URL
  await page.goto('https://example.com');
  
  // take a screenshot of that page and save it as 'example.png' in current directory
  await page.screenshot({path: 'example.png'});

  // close browser and all of its open tabs
  await browser.close();
})();