import { type ScrollEntry } from "./scrollMemory.ts";
/**
 * Remember where this history entry was scrolled to, and put it back
 * when the reader returns to it.
 *
 * `scrollMemory.ts` says why the browser will not, and what an entry
 * that has never been seen should do. This is the part that has to
 * survive the two things a real page does:
 *
 *  1. **The content arrives late.** An offset applied against a
 *     600px skeleton clamps to `0` and looks like it did nothing. A
 *     `ResizeObserver` on the scrollport and on its content column
 *     re-applies the offset every time either grows, until the
 *     offset lands or the window closes.
 *  2. **The reader scrolls during all that.** Any wheel, touch, key
 *     or pointer press ends the restore immediately. The alternative
 *     is a page that jumps out from under somebody who has already
 *     started reading.
 *
 * The save is a passive `scroll` listener, suppressed while a
 * restore is in flight. Without that suppression the feature eats
 * itself: writing `scrollTop` on a still-short page clamps to `0`
 * and fires a `scroll` event reading `0`, which would be saved over
 * the very offset being restored.
 *
 * @param entry The history entry and the page it belongs to.
 *   `null` turns the memory off, which is what an app that renders
 *   no `ScrollMemoryProvider` gets.
 */
export declare const useScrollMemory: (entry: ScrollEntry | null | undefined) => (node: unknown) => void;
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