/**
 * Saved Queries JSON Store
 *
 * SEARCH-019: Persistent storage for saved queries using JSON file
 *
 * Storage location: ~/.local/share/australian-history-mcp/saved-queries.json
 */
import type { SavedQuery, ListQueryOptions } from './types.js';
/**
 * Saved queries store with JSON persistence
 */
export declare class SavedQueriesStore {
    private data;
    /**
     * Get the queries file path
     */
    static getFilePath(): string;
    /**
     * Check if queries file exists
     */
    static exists(): boolean;
    /**
     * Load queries from disk
     */
    private load;
    /**
     * Save queries to disk
     */
    private save;
    /**
     * Clear cached data (for testing)
     */
    clearCache(): void;
    /**
     * Save a new query or update existing
     */
    saveQuery(query: Omit<SavedQuery, 'createdAt' | 'useCount'>): SavedQuery;
    /**
     * Get a query by name
     */
    getQuery(name: string): SavedQuery | null;
    /**
     * Delete a query by name
     */
    deleteQuery(name: string): boolean;
    /**
     * Mark a query as used (updates lastUsed and useCount)
     */
    markUsed(name: string): void;
    /**
     * List queries with optional filtering and sorting
     */
    listQueries(options?: ListQueryOptions): SavedQuery[];
    /**
     * Get count of saved queries
     */
    count(): number;
    /**
     * Get all unique tags
     */
    getTags(): string[];
    /**
     * Get all unique sources
     */
    getSources(): string[];
}
export declare const savedQueriesStore: SavedQueriesStore;
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