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Slide toasts in and out past the same edge - #188
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Need: a toast reads as one calm motion, arriving and leaving the same way. Problem: it rose from the bottom in 150ms with no fade, then slid out to the right. Solution: it fades while sliding past its viewport edge both ways, eases in over 400ms, and only fades under reduced motion. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Why
In Studio the toast felt abrupt and lopsided. It rose from the bottom in 150ms, fully opaque, then left by sliding out to the right. The right-hand exit is the shadcn default, borrowed from Radix's swipe-right gesture, so closing a toast normally reused the swipe-away motion.
What
Fixes (4.10.2)
One motion in and out. The toast now fades while it slides its full height from just past the viewport edge it sits on, and leaves the same way:
smup it sits bottom-right and moves to and from the bottom. Belowsmit sits at the top and moves to and from the top.cubic-bezier(0.16, 1, 0.3, 1), and closes over 250ms with an ease-in curve.prefers-reduced-motion, the toast only fades.The tw-animate utilities are now plain keyframes in the CSS module. As utilities, the swipe-end and close rules would compete for the same animation, and which one won would depend on how Tailwind sorts them.
These values were tuned in Studio with a temporary override. Studio will drop that override when it bumps to this release.
Not in this PR
When a new toast replaces the current one, the old one still vanishes without an exit.
ToastRootremounts the provider on each new toast to work around Radix's stuck pause timer. Fixing it means revisiting that workaround, which is a separate change.🤖 Generated with Claude Code