import { Format } from './shared.js';
declare class Locale {
    /**
     * Construct Locale object from options
     * @param options Format options
     * @param [locales] Locale or the default locale
     * @returns Locale object
     */
    static fromOptions(options: Intl.DateTimeFormatOptions, locales?: string | string[]): Locale;
    /**
     * Locale `Intl.DateTimeFormat` object
     */
    readonly formatter: Intl.DateTimeFormat;
    /**
     * Locale `formatter` resolved options
     */
    readonly options: Intl.ResolvedDateTimeFormatOptions;
    private readonly hourCycle;
    private readonly fractionalSecondDigits;
    /**
     * Create the Locale object
     * @param formatter Date time format
     */
    constructor(formatter: Intl.DateTimeFormat);
    /**
     * Hour cycle is not supported in older browsers. Therefore keep the default
     * @param options Format options
     * @return hourCycle
     */
    private resolveHourCycle;
    /**
     * Get months names for the specified formatter
     * @returns names Month names
     */
    private formatMonthNames;
    /**
     * Get weekday names for the specified formatter
     * @returns names Weekday names
     */
    private formatWeekdayNames;
    /**
     * Get period names for the specified formatter
     * @returns names Period names
     */
    private formatPeriodNames;
    /**
     * Get period names for the specified formatter
     * @returns names Period names
     */
    private formatEraNames;
    private _regExp;
    /**
     * Get regular expression for the format
     */
    private get regExp();
    private get yearRegExp();
    private get monthRegExp();
    private get dayRegExp();
    private get hourRegExp();
    private get minuteRegExp();
    private get secondRegExp();
    private get fractionalSecondRegExp();
    private get weekdayRegExp();
    private get dayPeriodRegExp();
    private getLiteralRegExp;
    private get eraRegExp();
    private _monthNames;
    /**
     * Get month names
     */
    private get monthNames();
    private _weekdayNames;
    /**
     * Get weekday names
     */
    private get weekdayNames();
    private _periodNames;
    /**
     * Get period names
     */
    private get periodNames();
    private _eraNames;
    /**
     * Get era names
     */
    private get eraNames();
    private _parts;
    /**
     * Get parts for formatter
     */
    private get parts();
    private _resolvedFormat;
    /**
     * Get resolved ISO string format
     */
    get isoFormat(): Format;
    /**
     * Try to parse localised date string into ISO date/time/datetime string
     * Throw an error if value is invalid
     * @param value Localised date
     * @param [referenceDate=0] Reference UTC date or time to resolve ambiguous strings.
     * @returns ISO date/time/datetime string
     */
    parse(value: string, referenceDate?: string | number | Date): string;
}
export { Locale };