ComponentReactregistry:ui1 dependency
HeaderStandIn
header-stand-in
Header copy of a field whose primary lives in a scroller: grows in while the primary is scrolled away, collapses when it returns.
Notes from the author
Wrap the header copy of a field whose primary instance scrolls away (pair with useStandInTarget). Animates max-width/opacity so the nav beside it never jumps; collapsed it is aria-hidden and click-through - pass shown to the child field's tabbable too. Owns only the animated wrapper: the responsive gate and the flex slot in the header row stay with the app. The built-in clip clearance keeps the focus ring unclipped inside the overflow-hidden the collapse needs.
@whiskeyjack