import type { IsoTimeStamp } from '../../domain.objects/IsoTimeStamp';
import { castInputToDate } from '../../domain.operations/casts/castInputToDate';
/**
 * .what = casts input to IsoTimeStamp format in UTC
 * .why = converts various input types to strict ISO timestamp
 * .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)
 *
 * @example
 * asIsoTimeStamp(new Date()) // auto-detect: includes ms if non-zero
 * asIsoTimeStamp(date, { precision: 'milli.x10^-3' }) // always include milliseconds
 * asIsoTimeStamp(date, { precision: 'whole.x10^0' }) // always strip milliseconds
 */
export declare const asIsoTimeStamp: (input: Parameters<typeof castInputToDate>[0], 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;
/**
 * .what = validates string is IsoTimeStamp format
 * .why = runtime validation for external input
 * .accepts = yyyy-MM-ddTHH:mm:ssZ or yyyy-MM-ddTHH:mm:ss.SSSZ
 */
export declare const isIsoTimeStamp: import("type-fns").AssessWithAssure<string, string & import("domain-glossaries").OfGlossary<"iso-time.IsoTimeStamp">>;