import type { VerticalAlignment } from "../../types/alignment";
export declare function mapPageAlignment(alignment: VerticalAlignment): string;
export declare function clamp(value: number, min: number, max: number): number;
/**
 * Resolves the carousel's starting page. Out-of-range indexes (including a
 * missing `pages[i]` hole) fall back to 0. Uses index access rather than
 * `Array.prototype.at` so Chrome < 92 does not throw while mounting.
 */
export declare function getDefaultPageIndex<T>(pages: readonly T[], initialPageIndex: number): number;
/** Release speed (0.4 px/ms = 400 px/s) at or above which a swipe counts as a flick. */
export declare const FLICK_VELOCITY_PX_PER_MS = 0.4;
/**
 * Decides which page a swipe settles on when the pointer is released. Matches
 * the native (iOS and Android) SDK carousels:
 *
 * - A flick (release speed >= `FLICK_VELOCITY_PX_PER_MS`) moves in the
 *   direction the pointer was travelling when released. From a partial drag it
 *   lands on the next page boundary that way, so dragging forward then flicking
 *   back returns to the start page.
 * - A slower release settles on whichever page is nearest, i.e. the drag must
 *   pass `SLOW_DRAG_THRESHOLD` of a page's width to change page.
 * - The result is never more than one page from `startPage`.
 *
 * Non-loop carousels clamp at their first and last page; loop carousels may
 * return an index just outside `[0, pageCount)` so the caller can animate into
 * a clone before normalizing.
 *
 * @param startPage        Page the gesture started on.
 * @param dragDistance     Signed change in slider translation in px (negative =
 *                         pointer moved left / next page).
 * @param velocityPxPerMs  Signed pointer velocity at release, same sign
 *                         convention as `dragDistance`.
 * @param pageWidth        Width of a single page in px.
 * @param pageCount        Total number of real pages.
 * @param loop             Whether the carousel loops.
 */
export declare function getSwipeTargetPage({ startPage, dragDistance, velocityPxPerMs, pageWidth, pageCount, loop, }: {
    startPage: number;
    dragDistance: number;
    velocityPxPerMs: number;
    pageWidth: number;
    pageCount: number;
    loop: boolean;
}): number;
export declare function getTranslation(element: HTMLElement | null): number;