Per #139, this happens because ResizeObserver does not exist in SSR mode.

I am making use of some SSR of a preview page in astro. Setting client:visible doesn't work in this case for the component that relies on the Carousel component.

The issue is that the ResizeObserver is being created on module load.

Instead, what can likely be done here is to move and create the resize observer INSIDE the onMount(), which should solve the issue.