/**
 * Date & time utility functions to abstract the `aws-sdk` away from users.
 * (v2 => v3 modularization is a breaking change)
 *
 * @see https://github.com/aws/aws-sdk-js/blob/6edf586dcc1de7fe8fbfbbd9a0d2b1847921e6e1/lib/util.js#L262
 */
interface DateUtils {
    clockOffset: number;
    getDateWithClockOffset(): Date;
    getClockOffset(): number;
    getHeaderStringFromDate(date: Date): string;
    getDateFromHeaderString(header: string): Date;
    isClockSkewed(serverDate: Date): boolean;
    isClockSkewError(error: any): boolean;
    setClockOffset(offset: number): void;
}
/**
 * This utility is intended to be deprecated and replaced by `signRequest` and `presignUrl` functions from
 * `clients/middleware/signing/signer/signatureV4`.
 *
 * TODO: refactor the logics here into `signRequest` and `presignUrl` functions and remove this class.
 *
 * @internal
 * @deprecated
 */
export declare const DateUtils: DateUtils;
export {};