/**
 * Utility functions for working with Unix timestamps (seconds since epoch).
 * OpenSea API and Seaport protocol use Unix timestamps in seconds, not milliseconds.
 */
/**
 * Get the current Unix timestamp in seconds
 * @returns Current time as Unix timestamp (seconds since epoch)
 */
export declare function getCurrentUnixTimestamp(): number;
/**
 * Get a Unix timestamp for a future time
 * @param seconds Number of seconds from now
 * @returns Unix timestamp (seconds since epoch)
 * @example
 * // Get timestamp for 1 day from now
 * const tomorrow = getUnixTimestampInSeconds(60 * 60 * 24);
 */
export declare function getUnixTimestampInSeconds(seconds: number): number;
/**
 * Common time durations in seconds for convenience
 */
export declare enum TimeInSeconds {
    /** 1 minute = 60 seconds */
    MINUTE = 60,
    /** 1 hour = 3600 seconds */
    HOUR = 3600,
    /** 1 day = 86400 seconds */
    DAY = 86400,
    /** 1 week = 604800 seconds */
    WEEK = 604800,
    /** 30 days = 2592000 seconds */
    MONTH = 2592000
}
/**
 * Get Unix timestamp for one month from now (30 days)
 * @returns Unix timestamp (seconds since epoch) for 30 days in the future
 */
export declare const oneMonthFromNowInSeconds: () => number;