Icon Transition · UIPKGE

Animated icon swap for click acknowledgements — copy → check, bookmark → bookmark-filled, follow → follower. Pass two icon components and an async `action`; clicking runs the action then springs the active icon in. Auto-reverts after `resetAfter` ms (default 1500), or pass `0` to keep the active icon and call the exposed `reset()` method to flip it back. Renders as a `<button>` by default; use `as="span"` plus the `active` prop when you want an externally controlled, non-interactive icon swap inside another control. Honors `prefers-reduced-motion`.