When I saw "... using web technologies" I was curious if it uses Puppeteer. package.json confirms that is indeed the case.
https://github.com/GoogleChrome/puppeteer
(I work for Chrome DevTools team, creators of Puppeteer)
https://github.com/GoogleChrome/puppeteer
(I work for Chrome DevTools team, creators of Puppeteer)
Been pretty interesting seeing webtech handle these kinds of problems