MutationObserver could handle this case instead of the animationstart hack yeah. Here's one impl I found: https://github.com/azu/wait-for-element.js/blob/master

MutationObserver could handle this case instead of the animationstart hack yeah. Here's one impl I found: https://github.com/azu/wait-for-element.js/blob/master/lib/wait-by-observer.js https://github.com/azu/wait-for-element.js/blob/master/lib/w... (also rstacruz's referenced onmount lib also uses MutationObserver/matches()) (Mutation events deprecated since ~5 years ago, yes. )