import { Latitude, Longitude, Platform, SourceStopId, Stop, StopId, StopsMap } from '../stops/stops.js';
import { Maybe } from './utils.js';
export type GtfsLocationType = 0 | 1 | 2 | 3 | 4;
export type StopEntry = {
    stop_id: SourceStopId;
    stop_name: string;
    stop_lat?: Latitude;
    stop_lon?: Longitude;
    location_type?: GtfsLocationType;
    parent_station?: SourceStopId;
    platform_code?: Platform;
};
type ParsedStop = Stop & {
    parentSourceId?: SourceStopId;
};
export type ParsedStopsMap = Map<SourceStopId, ParsedStop>;
/**
 * Parses the stops.txt file from a GTFS feed.
 *
 * @param stopsStream The readable stream containing the stops data.
 * @return A mapping of stop IDs to corresponding stop details.
 */
export declare const parseStops: (stopsStream: NodeJS.ReadableStream, platformParser?: (stopEntry: StopEntry) => Maybe<Platform>) => Promise<ParsedStopsMap>;
/**
 * Builds the final stop map indexed by internal IDs.
 * Excludes all stops that do not have at least one valid stopId
 * as a child, a parent, or being valid itself.
 *
 * @param parsedStops - The map of parsed stops.
 * @param validStops - A set of valid stop IDs.
 * @returns A map of stops indexed by internal IDs.
 */
export declare const indexStops: (parsedStops: ParsedStopsMap, validStops?: Set<StopId>) => StopsMap;
export {};