import { SqlResult } from '../models/SqlResult';
import { SqlDriver, DriverTransaction } from './SqlDriver';
import { DriverConfig } from '../models/SqlEngine';
export declare class PostgresDriver implements SqlDriver {
    private pool;
    constructor(config: DriverConfig);
    query<T = Record<string, unknown>>(sql: string, params?: unknown[]): Promise<SqlResult<T>>;
    execute(sql: string, params?: unknown[]): Promise<SqlResult>;
    transaction<R>(fn: (tx: DriverTransaction) => Promise<R>): Promise<R>;
    end(): Promise<void>;
}