import { Pool } from 'pg';
import { DatabaseConnectionOptions, DatabaseDriver, DatabaseQueryResult, DatabaseQueryTypes, Transaction } from '@riao/dbal';
export type PostgresConnectionOptions = DatabaseConnectionOptions;
export declare class PostgresDriver extends DatabaseDriver {
    conn: Pool;
    connect(options: PostgresConnectionOptions): Promise<this>;
    disconnect(): Promise<void>;
    query(options: DatabaseQueryTypes): Promise<DatabaseQueryResult>;
    getVersion(): Promise<string>;
    transaction<T>(fn: (transaction: Transaction) => Promise<T>, transaction: Transaction): Promise<T>;
}