/**
 * Converts pattern extension metres to GTFS kilometres (shapes.txt, stop_times.txt).
 * Rounds to 3 decimal places (1 m precision), matching stop_times export.
 */
export declare function metersToGtfsKm(meters: number): number;
/**
 * Cumulative shape distance in metres at a shape point.
 * The last point (index pointCount - 1) equals extensionMeters.
 */
export declare function shapeDistTraveledMetersAtPoint(extensionMeters: number, pointIndex: number, pointCount: number): number;