export interface MetroStation {
    name: string;
    nameTranslit: string;
    lat: number;
    lon: number;
    lineColor: string;
    lineName: string;
    lineNameTranslit: string;
    order: number;
    nameTatar?: string;
}
export interface GeoPoint {
    latitude: number;
    longitude: number;
}
export declare function calculateDistance(start: GeoPoint, end: GeoPoint): number;
export interface BaseStation {
    Name: string;
    Line: string;
    LineColor: string;
    Order: number;
}
export interface StandardStation extends BaseStation {
    Lat: number;
    Lon: number;
}
export interface KazanStation extends StandardStation {
    NameTatar: string;
}
type InternalStation = StandardStation | KazanStation;
export declare function findClosestStations<T extends StandardStation>(stations: T[], lat: number, lon: number, n: number): [MetroStation, number][];
export declare function getStationNames(stations: BaseStation[]): string[];
export declare function getStationsByLineColor<T extends InternalStation>(stations: T[], lineColor: string): MetroStation[];
export declare function getStationNamesByLineColor<T extends InternalStation>(stations: T[], lineColor: string): string[];
export {};