/** return date format as yyyy-MM-ddTHH:mm:ssZ
 * Optionally: remove Z, remove seconds, or set time to zero
 */
export declare function toIsoDateFormat(date: Date, options?: {
    zeroTime?: boolean;
    /** remove trailing Z (add do not add local time offset) */
    omitZ?: boolean;
    omitSeconds?: boolean;
    addLocalTimezoneOffset?: boolean;
}): string;
export declare function dateFormat(date: Date, format: string): string;