import type { IsoMonthStamp } from '../../domain.objects/IsoTimeStamp';
import { castInputToDate } from '../../domain.operations/casts/castInputToDate';
/**
 * .what = casts input to IsoMonthStamp format in UTC
 * .why = converts various input types to strict ISO month
 * .format = yyyy-MM
 *
 * timezone is always 'utc' — months are extracted from UTC representation
 */
export declare const asIsoMonthStamp: (input: Parameters<typeof castInputToDate>[0], options?: {
    /** output timezone — always 'utc' */
    timezone?: 'utc';
}) => IsoMonthStamp;
/**
 * .what = validates string is IsoMonthStamp format
 * .why = runtime validation for external input
 */
export declare const isIsoMonthStamp: import("type-fns").AssessWithAssure<string, string & import("domain-glossaries").OfGlossary<"iso-time.IsoMonthStamp">>;