import type { StopID, StopTime, Trip } from "@gb-transit/gtfs-loader";
import type { Network } from "../network/Network.js";
import type { RouteIdx, StopIdx } from "../network/Timetable.js";
/**
 * A leg taken on a vehicle: the route, the trip on it, and the positions boarded and alighted at.
 * Four integers, because that is all the scan needs to record.
 */
export type Connection = [route: RouteIdx, trip: number, from: number, to: number];
/**
 * A leg taken on foot, as an index into Network.transfers
 */
export type TransferIdx = number;
/**
 * The connection that gave the best arrival at each stop in each round. Indexed by stop, then
 * sparsely by round, so a stop with no entries was never reached.
 */
export type ConnectionIndex = (Connection | TransferIdx)[][];
/**
 * A leg taken on foot is recorded as an index into the network's transfers, a leg taken on a
 * vehicle as a tuple.
 */
export declare function isTransfer(connection: Connection | TransferIdx): connection is TransferIdx;
/**
 * The rest turn a connection back into the feed's terms, which is only worth doing for a journey
 * that is actually returned.
 */
/**
 * The stop the connection was boarded at
 */
export declare function originIndexOf(network: Network, [route, , from]: Connection): StopIdx;
/**
 * The stop the connection was boarded at, as the feed names it
 */
export declare function originOf(network: Network, connection: Connection): StopID;
/**
 * The feed's trip the connection was made on
 */
export declare function tripOf(network: Network, [, trip]: Connection): Trip;
/**
 * The stop times the connection covers, from the call boarded at to the call alighted at,
 * including the passing points between them.
 */
export declare function stopTimesOf(network: Network, connection: Connection): StopTime[];