export declare const DEFAULT_LOCALE = "en";
/**
 * Return the user locale based on browser's language.
 *
 * @returns The user locale.
 */
export declare const getUserLocale: () => string;
/**
 * Returns month in short format with the first capital letter based on browser's language.
 * EN: short format: Jan
 * PT-BR: short format: Jan.
 *
 * @param date
 * @param formatter?: (date: Date, month: Intl.DateTimeFormat) => string, to change the formatting pattern
 * @return an array with month names in short and long format.
 */
export declare const getMonthShortFormat: (date: Date, formatter?: (date: Date, month: Intl.DateTimeFormat) => string, locale?: string) => string;
/**
 * Returns month names in short and long format with the first capital letter based on browser's language.
 * EN: short format: Jan | long format: January
 * PT-BR: short format: Jan. | long format: Janeiro
 *
 * @param locale
 * @param formatter?: (date: Date, month: Intl.DateTimeFormat) => string, to change the formatting pattern
 * @return an array with month names in short and long format.
 */
export declare function getMonthNames(locale: string, formatter?: (date: Date, month: Intl.DateTimeFormat) => string): {
    short: string;
    long: string;
}[];