filter and algorithm should be made optional.

[shixish]

I added the question marks (?) to the opts object. This was causing my code to throw errors since I was only using filter and not specifying the algorithm (using the default).

    /**
     * Find an object with the shortest path from the given position. Uses A* search algorithm and Dijkstra's algorithm.
     * @param type See Room.find
     * @param opts An object containing pathfinding options (see Room.findPath), or one of the following: filter, algorithm
     */
    findClosestByPath<T>(type: number, opts?: {
        filter?: any | string;
        algorithm?: string;
    }): T;
    /**
     * Find an object with the shortest path from the given position. Uses A* search algorithm and Dijkstra's algorithm.
     * @param objects An array of room's objects or RoomPosition objects that the search should be executed against.
     * @param opts An object containing pathfinding options (see Room.findPath), or one of the following: filter, algorithm
     */
    findClosestByPath<T>(objects: [T | RoomPosition], opts?: {
        filter?: any | string;
        algorithm?: string;
    }): T;

[MarkoSulamagi]

I also found some other methods where this was the case. Fixed it and released new version.
Thanks for your help!