This has been possible for a long time with any browser using Selenium for example. It has APIs and client libraries for many languages. Also using a real brow

This has been possible for a long time with any browser using Selenium for example. It has APIs and client libraries for many languages. Also using a real browser brings a lot of problems: high resource consumption, hangs, it is unclear when the page has finished loading etc. You have to supervise all browser processes. And if you use promises, there is high chance that you will miss error messages because promises hide them by default.