/**
 * SQLite FTS5 memory store. Full-text search with BM25 ranking.
 *
 * Interface (implements Memory store contract):
 *   store(content, metadata)   → id
 *   search(query, options)     → [{ id, content, metadata, score }]
 *   get(id)                    → { content, metadata }
 *   delete(id)                 → void
 *
 * Requires peer dep: better-sqlite3
 */
export type ChunkRow = {
    id: number;
    content: string;
    /**
     * - JSON-serialized metadata.
     */
    metadata: string;
    /**
     * - FTS5 rank (search rows only).
     */
    rank?: number | undefined;
};
/**
 * SQLite FTS5 memory store. Full-text search with BM25 ranking.
 *
 * Interface (implements Memory store contract):
 *   store(content, metadata)   → id
 *   search(query, options)     → [{ id, content, metadata, score }]
 *   get(id)                    → { content, metadata }
 *   delete(id)                 → void
 *
 * Requires peer dep: better-sqlite3
 *
 * @typedef {object} ChunkRow
 * @property {number} id
 * @property {string} content
 * @property {string} metadata - JSON-serialized metadata.
 * @property {number} [rank] - FTS5 rank (search rows only).
 */
export class SQLiteStore {
    /**
     * @param {{ path?: string }} [options]
     * @throws {Error} `[SQLiteStore] requires options.path` — when path is missing.
     * @throws {Error} `[SQLiteStore] requires better-sqlite3` — when peer dep is not installed.
     * @name SQLite
     * @when you want durable, queryable SQLite-backed storage for Memory (store/search/get/delete) persisted on disk
     * @fails throws on a missing path or an absent better-sqlite3 peer dep; implements the four-verb Store socket.
     * @example
     *   const store = new SQLite({ path: './agent.db' });
     */
    constructor(options?: {
        path?: string;
    });
    _db: any;
    _insertStmt: any;
    _getStmt: any;
    _deleteStmt: any;
    _searchStmt: any;
    _allStmt: any;
    /**
     * @param {any} content
     * @param {Record<string, any>} [metadata]
     * @returns {number} id
     */
    store(content: any, metadata?: Record<string, any>): number;
    /**
     * @param {string} query
     * @param {{ limit?: number }} [options]
     * @returns {Array<{ id: number, content: string, metadata: Record<string, any>, score: number }>}
     */
    search(query: string, options?: {
        limit?: number;
    }): Array<{
        id: number;
        content: string;
        metadata: Record<string, any>;
        score: number;
    }>;
    /**
     * @param {number} id
     * @returns {{ id: number, content: string, metadata: Record<string, any> } | null}
     */
    get(id: number): {
        id: number;
        content: string;
        metadata: Record<string, any>;
    } | null;
    /**
     * @param {number} id
     * @returns {void}
     */
    delete(id: number): void;
    close(): void;
}