Is it possible to delay rendering until some kind of async task is done on the page?
Like waitFor in puppeteer https://github.com/GoogleChrome/puppeteer/blob/master/docs/api.md#pagewaitforselectororfunctionortimeout-options-args
Like waitFor in puppeteer https://github.com/GoogleChrome/puppeteer/blob/master/docs/api.md#pagewaitforselectororfunctionortimeout-options-args