/// <reference types="screeps" />
import { RoomName } from "../position/types";
export type FindRouteFn = (fromRoom: string, toRoom: string) => ReturnType<typeof Game.map.findRoute>;
/**
 * Provide a function like {@link Game.map.findRoute} but with cache.
 * It requires than routeCallback is deterministic
 * @param routeCallback optional function computing the cost to enter a room
 * @returns a function like findRoute
 */
export declare function findRouteCached(routeCallback?: (to: RoomName, from: RoomName) => number): FindRouteFn;
/**
 * Compute a distance lower bound from {@link Game.map.findRoute} path.
 * @param from start position
 * @param to destination position
 * @param findRoute optional replace the default route finder
 * @returns a distance between two points considering exit sides
 */
export declare function findRouteDist(from: RoomPosition, to: RoomPosition, findRoute?: FindRouteFn): number;