scrollTrigger doesnt work with gsap.matchMedia() using Next.js

[moosem1]

Hello, so im trying to use the matchmedia feature with ScrollTrigger in Next.js , the code runs perfectly when it's NOT inside the gsap matchmedia callback and starts it behaves strangely when it is. Below is a simple demostration referencing the main container and the target element to animate. Suggestions on why it's not working properly would greatly be appreciated. 

 

 if (typeof window !== "undefined") {
    gsap.registerPlugin(ScrollTrigger);
  }   

useEffect(() => {

let mm = gsap.matchMedia();

      mm.add("(min-width: 1080px)", () => { 
          const tl = gsap.timeline({ paused: false });
        
          const st = ScrollTrigger.create({
          trigger: containerRef.current,
          start: 'top top',
          end: `+=${containerRef.current.offsetHeight}`,
          pin: true,
          animation: tl,
          scrub: true,
          pinSpacing: true,
        });
        
        tl.to(textContainerRef.current, {y: -600,x: 0, duration:2 });
        
        return () => { 
           st.kill();
           tl.kill();
         };
      });
  }, []);

Thanks

[Rodrigo]

Hi @moosem1 and welcome to the GreenSock forums!

 

The cleanup section of the MatchMedia element is not the one you should use for cleanup in this particular setup, that has other uses that it might seem you don't need. Just revert the MatchMedia instance in the useEffect hook cleanup section and see how it goes:

const useIsomorphicLayoutEffect = typeof window !== "undefined" 
  ? useLayoutEffect 
  : useEffect;

gsap.registerPlugin(ScrollTrigger);

export default function Home () {
  useIsomorphicLayoutEffect(() => {
    const mm = gsap.matchMedia();
    mm.add(() => {});
    // React component cleanup, just revert GSAP MatchMedia
    return () => mm.revert();
  }, []);
  
  return (
    /* JSX */
  );
};

Hopefully this helps. If you keep having issues, please include a minimal demo in order to have a better look at what the issue could be. Here is a GSAP & ScrollTrigger starter template in NextJS that you can fork:
https://stackblitz.com/edit/nextjs-5cm4qn?file=pages%2Findex.js

 

Happy Tweening!

[moosem1]

Thanks for replaying @Rodrigo I will give this a whirl now and I will let you know how I get on. 

[moosem1]

Works like a charm @Rodrigo thanks again much appreciated