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<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#scrolltimeline-interface">
<style>
.scroller {
overflow: auto;
height: 100px;
width: 100px;
will-change: transform;
}
.contents {
height: 1000px;
width: 100%;
}
</style>
<div class="scroller">
<div class="contents"></div>
</div>
<script>
// Test passes if it does not crash.
// Scroll timeline animations are progress-based and not compatible with
// delays specified in milliseconds.
const scroller = document.querySelector('.scroller');
const animation = new Animation();
const timeline = animation.timeline;
const duration = timeline.duration;
const options = {
source: scroller,
scrollOffsets: [new CSSMathInvert(duration)]
};
const scroll_timeline = new ScrollTimeline(options);
</script>
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