import * as React from 'react';
import type { CarouselRailSlide } from './types.js';
export type CarouselRailIndicatorsAs = 'tabs' | 'buttons';
export interface CarouselRailContextValue {
    index: number;
    count: number;
    loop: boolean;
    /** Rotation is running right now (gate open, not stopped, not paused). */
    autoplayActive: boolean;
    /** The continuous gate: allowContinuous + motion=full + a
     * [data-ag-continuous="on"] ancestor (contract §9: every loop needs all three). */
    autoplayGate: boolean;
    autoplayStopped: boolean;
    setAutoplayStopped(v: boolean): void;
    overMedia: boolean;
    /** Resolved indicator variant (Indicators `semantics` wins over Root `indicatorsAs`). */
    indicatorsAs: CarouselRailIndicatorsAs;
    /** Lets an Indicators part nested below Root's direct children declare its variant. */
    registerIndicatorsAs(v: CarouselRailIndicatorsAs | undefined): void;
    slides: CarouselRailSlide[];
    /** Move to slide `i` (clamped) and scroll the viewport to it. */
    goTo(i: number): void;
    /** Move by `d` (wrapping when loop) and scroll; returns the new index. */
    step(d: number): number;
    viewportRef: React.RefObject<HTMLDivElement | null>;
    viewportId: string;
}
export declare const CarouselRailContext: React.Context<CarouselRailContextValue | null>;
export declare function useCarouselRail(part: string): CarouselRailContextValue;
export declare const useIsoLayoutEffect: typeof React.useEffect;
/** Logical direction of the carousel (arrows and scroll offsets flip in RTL). */
export declare function isRtl(el: Element | null): boolean;
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