import { Client, QueryResult } from 'pg';
import { PgConfig } from 'pg-env';
import { AuthOptions, PgTestConnectionOptions } from '@launchql/types';
export type PgTestClientOpts = {
    deferConnect?: boolean;
    trackConnect?: (p: Promise<any>) => void;
} & Partial<PgTestConnectionOptions>;
export declare class PgTestClient {
    config: PgConfig;
    client: Client;
    private opts;
    private ctxStmts;
    private contextSettings;
    private _ended;
    private connectPromise;
    constructor(config: PgConfig, opts?: PgTestClientOpts);
    private ensureConnected;
    close(): Promise<void>;
    begin(): Promise<void>;
    savepoint(name?: string): Promise<void>;
    rollback(name?: string): Promise<void>;
    commit(): Promise<void>;
    beforeEach(): Promise<void>;
    afterEach(): Promise<void>;
    setContext(ctx: Record<string, string | null>): void;
    /**
     * Set authentication context for the current session.
     * Configures role and user ID using cascading defaults from options → opts.auth → RoleMapping.
     */
    auth(options?: AuthOptions): void;
    /**
     * Commit current transaction to make data visible to other connections, then start fresh transaction.
     * Maintains test isolation by creating a savepoint and reapplying session context.
     */
    publish(): Promise<void>;
    /**
     * Clear all session context variables and reset to default anonymous role.
     */
    clearContext(): void;
    any<T = any>(query: string, values?: any[]): Promise<T[]>;
    one<T = any>(query: string, values?: any[]): Promise<T>;
    oneOrNone<T = any>(query: string, values?: any[]): Promise<T | null>;
    many<T = any>(query: string, values?: any[]): Promise<T[]>;
    manyOrNone<T = any>(query: string, values?: any[]): Promise<T[]>;
    none(query: string, values?: any[]): Promise<void>;
    result(query: string, values?: any[]): Promise<import('pg').QueryResult>;
    query<T = any>(query: string, values?: any[]): Promise<QueryResult<T>>;
    ctxQuery(): Promise<void>;
}