import type { Database } from 'better-sqlite3';
import { KVStore, KVStoreTransaction, ScanOptions } from '../types.js';
import { Tuple } from '../codec.js';
/**
 * Performance notes:
 * - WITHOUT ROWID makes our range scans pretty fast in SQLite
 * - With large data / scans, the bottleneck becomes getting data into javascript in the correct format
 *  - stmt.pluck(true) the `value` column in the scan query (if you dont need the key value) to just get a string array right off the bat
 *  - patch better-sqlite3 to parse JSON values directly (seems possible, could add some api to know which strings should be parsed that way)
 *    - Saves us the cost of SQLite -> string -> JSON.parse()
 */
export declare class SQLiteKVStore implements KVStore {
    private db;
    prefix: Tuple;
    private getStatement;
    private setStatement;
    private deleteStatement;
    private deleteRangeStatement;
    private scanStatement;
    private countStatement;
    private writeFactsQuery;
    constructor(db: Database, prefix?: Tuple);
    get(key: Tuple, prefix?: Tuple): any;
    set(key: Tuple, value: any, prefix?: Tuple): Promise<void>;
    delete(key: Tuple, prefix?: Tuple): Promise<void>;
    scan(options: ScanOptions): AsyncIterable<[Tuple, any]>;
    count(prefix: Tuple): Promise<number>;
    clear(): Promise<void>;
    scope(prefix: Tuple): KVStore;
    transact(): KVStoreTransaction;
    applyEdits(sets: AsyncIterable<[Tuple, any]> | Iterable<[Tuple, any]>, deletes: AsyncIterable<Tuple> | Iterable<Tuple>): Promise<void>;
}