import type { DocNode, DocContent } from '../../types/doc-source';
export interface UseDocumentTreeConfig {
    /** API endpoint for fetching the document tree structure */
    structureEndpoint: string;
    /** API endpoint for fetching document content */
    contentEndpoint: string;
    /** Base route path for URL navigation (e.g., '/knowledge-base', '/data-room') */
    baseRoute: string;
    /** Folder-index filename (defaults to 'README.md'). */
    folderIndexFile?: string;
}
/**
 * Generic hook for document tree navigation and content fetching.
 * Drives DocViewer across all doc-source consumers.
 *
 * Client-only: structure + content fetches run in parallel on first mount.
 * No SSR pre-population — the previous SSR path required a Supabase admin
 * client (service role key) and silently fell back to client fetches on
 * envs where the key wasn't set; the parallel client fetches keep behavior
 * uniform across local + prod (latency ~= max(structure, content), not sum).
 */
export declare function useDocumentTree(config: UseDocumentTreeConfig, initialPath?: string): {
    structure: DocNode[];
    selectedPath: string;
    setSelectedPath: import("react").Dispatch<import("react").SetStateAction<string>>;
    content: DocContent | null;
    isLoadingStructure: boolean;
    isLoadingContent: boolean;
    error: string | null;
    expandedNodes: Set<string>;
    toggleNode: (nodeId: string) => void;
    selectNode: (node: Pick<DocNode, "id" | "path" | "type" | "hasReadme">) => void;
    navigateToDoc: (path: string, options?: {
        expandFolder?: boolean;
        fromInternalLink?: boolean;
    }) => void;
    refetch: () => Promise<void>;
    setExpandedNodes: import("react").Dispatch<import("react").SetStateAction<Set<string>>>;
};
export type { DocNode, DocContent };
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