import { Dispatch, SetStateAction } from 'react';
export interface CNavGroupContextValue {
    /**
     * The id of the currently open child group at this level, or `undefined` when none is open.
     * Each `CNavGroup` keeps its own accordion state, so collapsing an ancestor never discards the
     * open/closed state of its descendants—reopening the ancestor restores them.
     */
    activeId: string | undefined;
    /**
     * Open (or, with `undefined`, close) a child group at this level. Opening a group collapses its
     * siblings, mirroring the vanilla `groupsAutoCollapse` behavior.
     */
    setActiveId: Dispatch<SetStateAction<string | undefined>>;
    /**
     * Open the whole branch from the parent group up to the root. Used by an active nav link to
     * reveal every ancestor group.
     */
    openBranch: () => void;
}
/**
 * Provides the per-level accordion state to the direct children (`CNavGroup`, `CNavLink`) of a
 * `CSidebarNav` or a parent `CNavGroup`. `null` means the consumer is rendered outside a sidebar
 * navigation, in which case groups fall back to their own local state.
 */
export declare const CNavGroupContext: import("react").Context<CNavGroupContextValue | null>;