import { SignatureV4 as BaseSignatureV4 } from "@smithy/signature-v4";
import {
  HttpRequest as IHttpRequest,
  RequestPresigner,
  RequestPresigningArguments,
  RequestSigner,
  RequestSigningArguments,
} from "@smithy/types";
export declare class WebsocketSignatureV4
  implements RequestSigner, RequestPresigner
{
  private readonly signer;
  constructor(options: { signer: BaseSignatureV4 });
  presign(
    originalRequest: IHttpRequest,
    options?: RequestPresigningArguments
  ): Promise<IHttpRequest>;
  sign(
    toSign: IHttpRequest,
    options?: RequestSigningArguments
  ): Promise<IHttpRequest>;
}