/**
 * constants
 */
/** Whether the browser supports the Intl API. */
export declare const SUPPORTS_INTL_API: boolean;
/** The default month names to use if Intl API is not available. */
export declare const DEFAULT_MONTH_NAMES: {
    long: string[];
    short: string[];
    narrow: string[];
};
/** The default day of the week names to use if Intl API is not available. */
export declare const DEFAULT_DAY_OF_WEEK_NAMES: {
    long: string[];
    short: string[];
    narrow: string[];
};
/** The default date names to use if Intl API is not available. */
export declare const DEFAULT_DATE_NAMES: string[];