import { type GTFS_Binary } from './common.js';
import { OperationalDate } from '@tmlmobilidade/go-types-shared';
/**
 * Represents a calendar in the GTFS (General Transit Feed Specification) format.
 * A calendar defines the days of the week on which a particular service is available,
 * along with the start and end dates of the service period.
 */
export interface GTFS_Calendar {
    end_date: OperationalDate;
    friday: GTFS_Binary;
    monday: GTFS_Binary;
    saturday: GTFS_Binary;
    service_id: string;
    start_date: OperationalDate;
    sunday: GTFS_Binary;
    thursday: GTFS_Binary;
    tuesday: GTFS_Binary;
    wednesday: GTFS_Binary;
}
/**
 * Represents a raw calendar in the GTFS format.
 * This interface is used to parse raw data from GTFS files, where fields may be optional
 * or represented as strings. It is typically used for data ingestion before validation
 * and transformation into the `GTFS_Calendar` format.
 */
export interface GTFS_Calendar_Raw {
    end_date?: string;
    friday?: string;
    monday?: string;
    saturday?: string;
    service_id?: string;
    start_date?: string;
    sunday?: string;
    thursday?: string;
    tuesday?: string;
    wednesday?: string;
}
/**
 * Validates and transforms a raw GTFS calendar into the GTFS_Calendar format.
 * This function checks the types of fields, converts boolean strings to boolean values,
 * and ensures that required fields are present.
 * @param rawData The raw calendar data to validate and transform.
 * @returns A validated GTFS_Calendar object.
 */
export declare function validateGtfsCalendar(rawData: GTFS_Calendar_Raw): GTFS_Calendar;