import Database from 'better-sqlite3';
import { VectorIndex } from './vector-index.js';
export interface PersistentVectorIndexOptions {
    db: Database.Database;
}
export declare class PersistentVectorIndex extends VectorIndex {
    private readonly db;
    constructor(options: PersistentVectorIndexOptions);
    private initSchema;
    private loadFromDb;
    addVector(id: string, vector: number[]): void;
    remove(id: string): boolean;
}
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