/**
 * SQLite-based Vector Store
 *
 * Provides vector similarity search using better-sqlite3 with:
 * - Vector embeddings stored as BLOBs
 * - Cosine similarity computed in JavaScript
 * - Full-text search using MiniSearch (replaces FTS5 for reliability)
 * - Hybrid search with RRF (Reciprocal Rank Fusion)
 * - Automatic disk persistence
 *
 * Zero external dependencies - works immediately after npm install.
 */
import { IVectorStore, VectorDocument, VectorSearchResult } from '../interfaces';
import { MiniSearchTextStore } from './minisearch-text-store';
export declare class SQLiteVectorStore implements IVectorStore {
    private flushIntervalSeconds;
    private db;
    private textStore;
    private isDirty;
    private flushTimer;
    private dataDir;
    constructor(dataDir: string, flushIntervalSeconds?: number);
    private initializeSchema;
    private startFlushTimer;
    private serializeEmbedding;
    private deserializeEmbedding;
    private cosineSimilarity;
    upsert(doc: Omit<VectorDocument, 'createdAt' | 'updatedAt'>): Promise<void>;
    upsertMany(docs: Array<Omit<VectorDocument, 'createdAt' | 'updatedAt'>>): Promise<void>;
    searchByVector(embedding: number[], projectId: string, limit?: number): Promise<VectorSearchResult[]>;
    searchByText(query: string, projectId: string, limit?: number): Promise<VectorSearchResult[]>;
    searchHybrid(query: string, embedding: number[], projectId: string, limit?: number): Promise<VectorSearchResult[]>;
    deleteByProject(projectId: string): Promise<number>;
    deleteByFiles(projectId: string, filePaths: string[]): Promise<number>;
    delete(id: string): Promise<boolean>;
    count(projectId: string): Promise<number>;
    countFiles(projectId: string): Promise<number>;
    getFileMetadata(projectId: string, filePath: string): Promise<{
        fileHash: string;
        indexedAt: string;
    } | null>;
    getFileHashes(projectId: string): Promise<Map<string, string>>;
    getById(id: string): Promise<import('../interfaces').VectorDocument | null>;
    getFileEmbeddings(projectId: string, filePaths: string[]): Promise<Map<string, number[][]>>;
    getFilePathsForDir(projectId: string, dirPath: string): Promise<string[]>;
    deleteByFilePathPrefix(projectId: string, prefix: string): Promise<number>;
    flush(): Promise<void>;
    close(): Promise<void>;
    /**
     * Get the underlying text store for synonym management
     */
    getTextStore(): MiniSearchTextStore;
}
//# sourceMappingURL=sqlite-vector-store.d.ts.map