import { DateTime } from "../datetime.js";
import { DayOfWeek, StringUnitLength, UnitLength, WeekUnitLengths } from "../types/common.js";
import { LocaleOptions, NumberingSystem, CalendarSystem, WeekSettings } from "../types/locale.js";
/**
 * @private
 */
declare class PolyNumberFormatter {
    private readonly _floor;
    private _inf?;
    private readonly _padTo;
    constructor(intl: string, forceSimple: boolean, opts: Intl.NumberFormatOptions & {
        padTo?: number;
        floor?: boolean;
    });
    format(i: number): string;
}
/**
 * @private
 */
export declare class PolyDateFormatter {
    get dtf(): Intl.DateTimeFormat;
    private _dt;
    private _dtf;
    private _opts;
    private _originalZone?;
    constructor(dt: DateTime, intl: string, opts: Intl.DateTimeFormatOptions);
    format(): string;
    formatToParts(): Intl.DateTimeFormatPart[];
    resolvedOptions(): Intl.ResolvedDateTimeFormatOptions;
}
/**
 * @private
 */
declare class PolyRelFormatter {
    private _opts;
    private _rtf?;
    constructor(locale: Intl.UnicodeBCP47LocaleIdentifier, isEnglish: boolean, opts: Intl.RelativeTimeFormatOptions);
    format(count: number, unit: Intl.RelativeTimeFormatUnit): string;
    formatToParts(count: number, unit: Intl.RelativeTimeFormatUnit): Intl.RelativeTimeFormatPart[];
}
/**
 * @private
 */
export declare class Locale {
    private static _weekInfoCache;
    get fastNumbers(): boolean;
    readonly locale: string;
    numberingSystem?: Readonly<NumberingSystem>;
    outputCalendar?: Readonly<CalendarSystem>;
    private _eraCache;
    private _fastNumbersCached?;
    private readonly _intl;
    private _meridiemCache?;
    private _monthsCache;
    private readonly _specifiedLocale?;
    private _weekSettings;
    private _weekdaysCache;
    private constructor();
    static create(locale?: string, numberingSystem?: NumberingSystem, outputCalendar?: CalendarSystem, weekSettings?: WeekSettings | void, defaultToEN?: boolean): Locale;
    static fromObject({ locale, numberingSystem, outputCalendar, weekSettings }?: LocaleOptions): Locale;
    static fromOpts(opts: LocaleOptions): Locale;
    static resetCache(): void;
    clone(alts?: LocaleOptions): Locale;
    dtFormatter(dt: DateTime, intlOptions?: Intl.DateTimeFormatOptions): PolyDateFormatter;
    equals(other: Locale): boolean;
    eras(length: StringUnitLength): string[];
    extract(dt: DateTime, intlOptions: Intl.DateTimeFormatOptions, field: Intl.DateTimeFormatPartTypes): string;
    getMinDaysInFirstWeek(): number;
    getStartOfWeek(): number;
    getWeekSettings(): WeekSettings;
    getWeekendDays(): [DayOfWeek, DayOfWeek];
    isEnglish(): boolean;
    listFormatter(opts?: Intl.ListFormatOptions): Intl.ListFormat;
    listingMode(): "en" | "intl";
    meridiems(): string[];
    months(length: UnitLength, format?: boolean): string[];
    numberFormatter(options?: Intl.NumberFormatOptions & {
        padTo?: number;
        floor?: boolean;
    }): PolyNumberFormatter;
    redefaultToEN(alts?: LocaleOptions): Locale;
    redefaultToSystem(alts?: LocaleOptions): Locale;
    relFormatter(options?: Intl.RelativeTimeFormatOptions): PolyRelFormatter;
    toString(): string;
    weekdays(length: WeekUnitLengths, format?: boolean): string[];
    private _getCachedWeekInfo;
    private _supportsFastNumbers;
}
export {};