export declare class I18nFormat {
    private static readonly DEFAULT_LOCALE;
    private static readonly DATETIME_FORMAT_EN;
    private static readonly DATETIME_FORMAT_ZH;
    private static readonly DATETIME_FORMAT_RU;
    private static readonly DATE_FORMAT_EN;
    private static readonly DATE_FORMAT_ZH;
    private static readonly DATE_FORMAT_RU;
    private static readonly localFormat;
    private static getLocaleAndLang;
    static formatDate(value: string | number | Date, format?: string, locale?: string, timezone?: string): string;
    static formatDateTime(value: string | number | Date, format?: string, locale?: string, timezone?: string): string;
    static formatDateTimeWithoutGMT(value: string | number | Date, format?: string, locale?: string, timezone?: string): string;
}