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'use strict';
/**
* Returns a Promise that is resolved after a CSS scroll timeline is created (as
* the result of a style change) and a snapshot has been taken, so that the
* animation style is correctly reflected by getComputedStyle().
* Technically, this only takes a full frame update. We implement this as two
* requestAnimationFrame callbacks because the result will be available at the
* beginning of the second frame.
*/
async function waitForCSSScrollTimelineStyle() {
await waitForNextFrame();
await waitForNextFrame();
}
function assert_implements_animation_timeline() {
assert_implements(CSS.supports('animation-timeline:--foo'),
'animation-timeline not supported');
}