// Minimal ambient Temporal declarations (no polyfill); extend as needed.

declare global {
	namespace Temporal {
		type TimeZoneId = string;
		type DurationLike = {
			days?: number;
			hours?: number;
			milliseconds?: number;
		};

		interface Duration {
			readonly days: number;
			total(options: { unit: 'millisecond' | 'day' }): number;
		}
		namespace Duration {
			function from(durationLike: DurationLike): Duration;
		}

		interface Instant {
			readonly epochMilliseconds: number;
			add(durationLike: { hours?: number; milliseconds?: number }): Instant;
			toString(options?: { smallestUnit?: 'millisecond' }): string;
			toZonedDateTimeISO(timeZone: TimeZoneId): ZonedDateTime;
			toLocaleString(
				locales?: string | string[],
				options?: Intl.DateTimeFormatOptions,
			): string;
		}
		namespace Instant {
			function compare(a: string | Instant, b: string | Instant): number;
			function from(iso: string): Instant;
			function fromEpochMilliseconds(ms: number): Instant;
		}

		interface ZonedDateTime {
			add(durationLike: DurationLike): ZonedDateTime;
			startOfDay(): ZonedDateTime;
			toInstant(): Instant;
			toPlainDate(): PlainDate;
			toLocaleString(
				locales?: string | string[],
				options?: Intl.DateTimeFormatOptions,
			): string;
		}
		interface PlainDate {
			/** ISO day of week: Monday = 1 … Sunday = 7. */
			readonly dayOfWeek: number;
			add(durationLike: DurationLike): PlainDate;
			subtract(durationLike: DurationLike): PlainDate;
			/** Difference to another date; largest unit defaults to days. */
			until(other: PlainDate): Duration;
			toZonedDateTime(timeZone: TimeZoneId): ZonedDateTime;
			toString(): string;
		}
		namespace PlainDate {
			function from(
				plainDateLike: { year: number; month: number; day: number } | string,
			): PlainDate;
		}
		namespace Now {
			function instant(): Instant;
			function timeZoneId(): TimeZoneId;
		}
	}
}

export {};