import { type RefObject } from 'react';
import type { SlotRegistry } from './slot-registry.js';
/** @internal */
export interface PageLayoutPortalContextValue {
    hosts: {
        header: HTMLDivElement;
        sidebar: HTMLDivElement;
        content: HTMLDivElement;
        details: HTMLDivElement;
    };
    /**
     * Stable refs to the two layout container elements. The slot components
     * measure these directly instead of receiving a width through the registry,
     * which would make them subscribers to the store they publish to.
     */
    containers: {
        sidebar: RefObject<HTMLDivElement | null>;
        details: RefObject<HTMLDivElement | null>;
    };
    registry: SlotRegistry;
}
/** @internal */
export declare const PageLayoutPortalContext: import("react").Context<PageLayoutPortalContextValue | null>;
/** @internal */
export declare function usePageLayoutPortalContext(): PageLayoutPortalContextValue;
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