import { Schedule } from "../native/Schedule";
import { IdGenerator } from "../native/OverlayRecord";
/**
 * Loop through every schedule and replace any early morning services with a copy on the previous day.
 *
 * GTFS specification defines "time" as starting from noon minus 12 hours, which is normally midnight
 * but may be different by 1 hour on the day when the summer time zone changes, in order to avoid
 * a DST change happening inside a service day.
 *
 * Therefore, trains which depart before the change on changeover days should be recorded as on the
 * previous service day instead.
 */
export declare function addLateNightServices(schedules: Schedule[], idGenerator: IdGenerator): Schedule[];