import { StateCode } from '../_internals/constants/states';
/**
 * Returns a list of city names for a given Brazilian state, or all cities if no state is specified.
 *
 * If a state code is provided, the function returns its cities sorted alphabetically.
 * If no state is provided, it returns all cities from all states, sorted alphabetically.
 *
 * @param state - The code of the Brazilian state to filter cities by. Optional.
 * @returns An array of city names, sorted alphabetically. Returns an empty array if the state is not found.
 */
export declare const getCities: (state?: StateCode) => string[];