import pg, { QueryResult } from "pg";
declare const postgres: {
    query: <R extends pg.QueryResultRow = any>(statement: string, cb: (err: Error, result: pg.QueryResult<R>) => void) => void;
    close: () => void;
    connect: () => void;
    client: pg.Pool;
    config: {
        host: string | undefined;
        port: string | undefined;
        user: string | undefined;
        password: string | undefined;
        database: string | undefined;
        url: string | undefined;
    };
};
export default postgres;