import { SourceStopId, Stop, StopId, StopsMap } from './stops.js';
/**
 * The StopMap class provides functionality to search for public transport stops
 * by name or geographic location. It leverages text search and geospatial indexing
 * to efficiently find stops based on user queries.
 */
export declare class StopsIndex {
    private readonly stopsMap;
    private readonly sourceStopsMap;
    private readonly textIndex;
    private readonly geoIndex;
    private readonly stopPoints;
    constructor(stopsMap: StopsMap);
    /**
     * Deserializes a binary representation of the stops.
     *
     * @param {Uint8Array} data - The binary data to deserialize.
     * @returns {StopsMap} - The deserialized StopFinder.
     */
    static fromData(data: Uint8Array): StopsIndex;
    /**
     * Serializes the stops into a binary protobuf.
     *
     * @returns {Uint8Array} - The serialized binary data.
     */
    serialize(): Uint8Array;
    /**
     * Returns the number of stops in the index.
     *
     * @returns The total number of stops.
     */
    size(): number;
    /**
     * Finds stops by their name using a text search.
     *
     * @param query - The name or partial name of the stop to search for.
     * @param maxResults - The maximum number of results to return (default is 5).
     * @returns An array of Stop objects that match the search query.
     */
    findStopsByName(query: string, maxResults?: number): Stop[];
    /**
     * Finds stops by their geographic location using latitude and longitude.
     *
     * @param lat - The latitude of the location to search near.
     * @param lon - The longitude of the location to search near.
     * @param maxResults - The maximum number of results to return (default is 10).
     * @param radius - The search radius in kilometers (default is 0.5).
     * @returns An array of Stop objects that are closest to the specified location.
     */
    findStopsByLocation(lat: number, lon: number, maxResults?: number, radius?: number): Stop[];
    /**
     * Finds a stop by its internal ID.
     *
     * @param id - The internal ID of the stop to search for.
     * @returns The Stop object that matches the specified ID, or undefined if not found.
     */
    findStopById(id: StopId): Stop | undefined;
    /**
     * Finds a stop by its ID in the transit data source (e.g. GTFS).
     *
     * @param id - The source ID of the stop to search for.
     * @returns The Stop object that matches the specified ID, or undefined if not found.
     */
    findStopBySourceStopId(sourceStopId: SourceStopId): Stop | undefined;
    /**
     * Find ids of all sibling stops.
     */
    equivalentStops(sourceId: SourceStopId): Stop[];
}