import type { EntitySchema, OrmRequest, OrmResponse } from '@mostajs/orm';
import type { ITransport, TransportConfig, TransportInfo, TransportMiddleware, TransportContext } from '../core/types.js';
type OrmHandler = (req: OrmRequest, ctx: TransportContext) => Promise<OrmResponse>;
export declare class NatsTransport implements ITransport {
    readonly name = "nats";
    private config;
    private schemas;
    private middlewares;
    private ormHandler;
    private natsConnection;
    private subscriptions;
    private stats;
    setHandler(handler: OrmHandler): void;
    use(mw: TransportMiddleware): void;
    registerEntity(schema: EntitySchema): void;
    /**
     * Start NATS transport.
     * Connects to NATS server and subscribes to request-reply subjects.
     * Subject pattern: mostajs.{entity}.{operation}
     */
    start(config: TransportConfig): Promise<void>;
    private handleMessage;
    /**
     * Publish an event to NATS (for use by EntityService change events).
     */
    publish(subject: string, data: any): Promise<void>;
    /**
     * List all NATS subjects this transport subscribes to.
     */
    listSubjects(): string[];
    /**
     * Handle HTTP request for NATS info/proxy (when NATS server isn't available).
     */
    handleHttpProxy(op: string, entity: string, body: any): Promise<OrmResponse>;
    stop(): Promise<void>;
    getInfo(): TransportInfo;
    isConnected(): boolean;
    getSubjects(): string[];
}
/** Factory */
export declare function createTransport(): ITransport;
export {};