/** The two dismissals no overlay library performs, both for events its outside-press listener cannot see,
 *  and both anchored-only: a modal sheet covers the page. */
/** A press inside a cross-origin iframe never reaches this document, so focus is the signal; checking
 *  `activeElement` keeps it from firing on a tab switch, which also blurs the window. */
export declare function useIframeDismiss(active: boolean, dismiss: () => void): void;
/** A scroll that moves the anchor is the reader moving on, so the panel is dismissed rather than chased,
 *  as a native `<select>` does; Base UI's positioner tracks the anchor off-screen instead. The scroller
 *  must contain the anchor, which excludes the panel's list and deeper overlays. Capture, since a nested
 *  scroller's event does not bubble. `anchor` is read at scroll time because it is not always mounted when
 *  this arms. */
export declare function useAnchorScrollDismiss(active: boolean, anchor: () => Element | null, dismiss: () => void): void;