import type { ReadingDirection, ViewerState } from "../types";
export type AdjacentDirection = "previous" | "next";
export type PageGroupPlacement = AdjacentDirection | "current";
export type PageGroupSide = "left" | "center" | "right";
export interface PageGroup {
    indexes: number[];
    placement: PageGroupPlacement;
    offset: number;
}
export declare function getDisplayedPageIndexes(state: ViewerState, isMobile: boolean): number[];
export declare function getAdjacentPageIndexes(state: ViewerState, direction: AdjacentDirection, isMobile: boolean): number[];
export declare function getPreloadedPageGroups(state: ViewerState, isMobile: boolean): PageGroup[];
export declare function getPageGroupSide(state: ViewerState, placement: PageGroupPlacement): PageGroupSide;
export declare function isSwipeToNext(deltaX: number, direction: ReadingDirection): boolean;
export declare function getPageIndexesForPageIndex(state: ViewerState, pageIndex: number, isMobile: boolean): number[];
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