import type { IsoTimeStamp } from '../../domain.objects/IsoTimeStamp';
/**
 * .what = returns current UTC timestamp
 * .why = provides type-safe access to current time
 * .format = yyyy-MM-ddTHH:mm:ssZ or yyyy-MM-ddTHH:mm:ss.SSSZ
 *
 * timezone is always 'utc' (the Z suffix in ISO 8601)
 *
 * precision modulates the precision of seconds:
 * - 'whole.x10^0' = whole seconds (strip milliseconds)
 * - 'milli.x10^-3' = milliseconds (include .SSS)
 * - undefined = auto-detect (include ms if non-zero)
 */
export declare const now: (options?: {
    /** output timezone — always 'utc' (the Z suffix in ISO 8601) */
    timezone?: 'utc';
    /** modulates precision of seconds: 'whole.x10^0' (seconds) or 'milli.x10^-3' (milliseconds) */
    precision?: 'milli.x10^-3' | 'whole.x10^0';
}) => IsoTimeStamp;