import {
  BuildMiddleware,
  RelativeMiddlewareOptions,
  RequestHandler,
} from "@smithy/types";
export declare const websocketEndpointMiddleware: (
  config: {
    requestHandler: RequestHandler<any, any>;
  },
  options: {
    headerPrefix: string;
  }
) => BuildMiddleware<any, any>;
export declare const websocketEndpointMiddlewareOptions: RelativeMiddlewareOptions;