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Re: [csswg-drafts] [web-animations-1] Object-form keyframe with offset: 1 (#5664)

From: Brian Birtles via GitHub <sysbot+gh@w3.org>
Date: Tue, 27 Oct 2020 12:13:25 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-717201973-1603800804-sysbot+gh@w3.org>
> I'm using only one offset value in my implementation as I'm still not sure why keeping both specified/computed offsets would be required.

Right, it's mostly so that authors can roundtrip `null` offsets. e.g.

const anim = elem.animate({ left: ['0px', '100px'] }, 2000);

Without distinguishing between specified and computed, the returned keyframes would have resolved computed offsets and you'd lose the auto-spacing behavior.

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