Use puppeteer to automatically generate code screenshots for social media

[prtksxna]

npm install puppeteer --save

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto('http://localhost:4567/blog/two-negatives-must-make-a-positive.html');
  const code = await page.$('code');
  await code.screenshot({path: 'code.png'});
  await browser.close();
})();