export type Formats = Pick<Intl.DateTimeFormatOptions, "weekday" | "era" | "year" | "month" | "day" | "dayPeriod" | "hour" | "minute" | "second" | "timeZoneName"> & {
	fractionalSecondDigits?: 1 | 2 | 3;
	hour12?: boolean;
	pattern: string;
	pattern12: string;
	skeleton: string;
	rawPattern: string;
	rangePatterns: Record<TABLE_2 | "default", RangePatterns>;
	rangePatterns12: Record<TABLE_2 | "default", RangePatterns>;
};
export interface IntlDateTimeFormatInternal {
	locale: string;
	dataLocale: string;
	calendar?: string;
	dateStyle?: "full" | "long" | "medium" | "short";
	timeStyle?: "full" | "long" | "medium" | "short";
	weekday: "narrow" | "short" | "long";
	era: "narrow" | "short" | "long";
	year: "2-digit" | "numeric";
	month: "2-digit" | "numeric" | "narrow" | "short" | "long";
	day: "2-digit" | "numeric";
	dayPeriod: "narrow" | "short" | "long";
	hour: "2-digit" | "numeric";
	minute: "2-digit" | "numeric";
	second: "2-digit" | "numeric";
	timeZoneName: "short" | "long" | "shortOffset" | "longOffset" | "shortGeneric" | "longGeneric";
	fractionalSecondDigits?: 1 | 2 | 3;
	hourCycle: string;
	numberingSystem: string;
	timeZone: string;
	pattern: string;
	format: Formats;
	rangePatterns: Record<TABLE_2 | "default", RangePatterns>;
	boundFormat?: Intl.DateTimeFormat["format"];
}
export interface RangePatternPart<T extends RangePatternType = RangePatternType> {
	source: T;
	pattern: string;
}
export type RangePatterns = Pick<Intl.DateTimeFormatOptions, "weekday" | "era" | "year" | "month" | "day" | "hour" | "minute" | "second" | "timeZoneName"> & {
	hour12?: boolean;
	patternParts: Array<RangePatternPart>;
};
export declare enum RangePatternType {
	startRange = "startRange",
	shared = "shared",
	endRange = "endRange"
}
export type TABLE_6 = "weekday" | "era" | "year" | "month" | "day" | "dayPeriod" | "hour" | "minute" | "second" | "fractionalSecondDigits" | "timeZoneName";
export type TABLE_2 = "era" | "year" | "month" | "day" | "dayPeriod" | "ampm" | "hour" | "minute" | "second" | "fractionalSecondDigits";
export type TimeZoneNameData = Record<string, {
	long?: [string, string];
	short?: [string, string];
}>;
export interface EraData {
	BC: string;
	AD: string;
}
export interface DateTimeFormatLocaleInternalData {
	am: string;
	pm: string;
	weekday: {
		narrow: string[];
		long: string[];
		short: string[];
	};
	era: {
		narrow: EraData;
		long: EraData;
		short: EraData;
	};
	month: {
		narrow: string[];
		long: string[];
		short: string[];
	};
	/**
	* Stand-alone month names (used when month appears without other date fields)
	* Falls back to format month if not provided
	*/
	monthStandalone?: {
		narrow: string[];
		long: string[];
		short: string[];
	};
	timeZoneName: TimeZoneNameData;
	/**
	* So we can construct GMT+08:00
	*/
	gmtFormat: string;
	/**
	* So we can construct GMT+08:00
	*/
	hourFormat: string;
	hourCycle: string;
	dateFormat: {
		full: Formats;
		long: Formats;
		medium: Formats;
		short: Formats;
	};
	timeFormat: {
		full: Formats;
		long: Formats;
		medium: Formats;
		short: Formats;
	};
	dateTimeFormat: {
		full: string;
		long: string;
		medium: string;
		short: string;
	};
	/**
	* Interval format fallback pattern from CLDR (e.g., "{0} – {1}" for English, "{0}～{1}" for Japanese)
	* Used when no specific interval format is available for a given skeleton
	*/
	intervalFormatFallback: string;
	formats: Record<string, Formats[]>;
	nu: string[];
	hc: string[];
	ca: string[];
}
export type IntervalFormatsData = {
	intervalFormatFallback: string;
} & Record<string, Record<string, string>>;
export interface DateTimeFormat extends Omit<Intl.DateTimeFormat, "resolvedOptions" | "formatRange" | "formatRangeToParts" | "formatToParts"> {
	resolvedOptions(): ResolvedDateTimeFormatOptions;
	formatToParts(date?: Date | number): IntlDateTimeFormatPart[];
	formatRange(startDate: number | Date, endDate: number | Date): string;
	formatRangeToParts(startDate: number | Date, endDate: number | Date): IntlDateTimeFormatPart[];
}
export interface ResolvedDateTimeFormatOptions extends Intl.ResolvedDateTimeFormatOptions {
	dateStyle?: "full" | "long" | "medium" | "short";
	timeStyle?: "full" | "long" | "medium" | "short";
	numberingSystem: string;
}
export type UnpackedZoneData = [number, string, number, boolean];
export type IntlDateTimeFormatPartType = Intl.DateTimeFormatPartTypes | "ampm" | "relatedYear" | "yearName" | "unknown" | "fractionalSecondDigits";
export interface IntlDateTimeFormatPart {
	type: IntlDateTimeFormatPartType;
	value: string | undefined;
	source?: RangePatternType;
}