Comment by kolodny

Author here. Can you show an example of how Playwright would progress a timer on a page? For example, how would you make this component pass faster than 60 seconds?

    export const Countdown = () => {
      const [time, setTime] = React.useState(60);
      React.useEffect(() => {
        const interval = setInterval(() => {
          setTime(t => t - 1);
          if (t === 1) clearInterval(interval);
        }, 1000);

        return () => clearInterval(interval)
      }, []);

      return time > 0 ? <>Time left {time}</> : <>Done</>
    };

Short of using Playwright Component Tests, this isn't possible.

I also found an issue where the only solution was to inject sinon into the page which I wouldn't consider a great option: https://github.com/microsoft/playwright/issues/10230