import { Pool } from 'pg';
import type { DatabaseAdapter } from '@momentumcms/core';
/**
 * PostgreSQL adapter options.
 */
export interface PostgresAdapterOptions {
    /**
     * PostgreSQL connection string.
     * Format: postgresql://user:password@host:port/database
     */
    connectionString: string;
    /**
     * Maximum number of clients in the pool.
     * @default 10
     */
    max?: number;
}
/**
 * Extended adapter interface that includes raw database access for Better Auth.
 */
export interface PostgresAdapterWithRaw extends DatabaseAdapter {
    /** Get the pg Pool instance for Better Auth integration */
    getPool(): Pool;
    /** Execute a raw SQL query */
    query<T extends Record<string, unknown>>(sql: string, params?: unknown[]): Promise<T[]>;
    /** Execute a raw SQL query and return a single row */
    queryOne<T extends Record<string, unknown>>(sql: string, params?: unknown[]): Promise<T | null>;
    /** Execute a raw SQL statement (INSERT, UPDATE, DELETE) */
    execute(sql: string, params?: unknown[]): Promise<number>;
}
/**
 * Creates a PostgreSQL database adapter.
 */
export declare function postgresAdapter(options: PostgresAdapterOptions): PostgresAdapterWithRaw;