import ws from 'ws';
import { WebsocketEventResponseBody, WebsocketMiddlewareContext } from './types';
import { Trigger } from '../../trigger';
export declare class WebsocketTrigger extends Trigger {
    private handlePipeline;
    constructor();
    response(ctx: WebsocketMiddlewareContext, body: WebsocketEventResponseBody): Promise<void>;
    send(socket: ws.WebSocket, body: WebsocketEventResponseBody): Promise<void>;
    setHandlePipeline(pipeline: WebsocketTrigger['handlePipeline']): void;
}