import type { TurningMode } from '../../types/slides';
/** Neighbors kept in the turning window (current ± 1). */
export declare const SCREEN_PRELOAD_RADIUS = 1;
/** Filmstrip / bottom-rail thumbs that keep a raster attached. */
export declare const SCREEN_THUMB_RADIUS = 6;
export declare const screenWindowRange: (current: number, length: number, radius?: number) => {
    start: number;
    end: number;
};
export declare const isInScreenWindow: (index: number, current: number, radius?: number) => boolean;
export declare const resolveTurningMode: (slideId: string, turningMode?: TurningMode) => TurningMode;