/**
 * A direction can be `LEFT` or `RIGHT`, or if you're
 * at the end of a hallway, it can be `FRONT`.
 *
 * You can refer to these directions as `Direction.LEFT` or
 * `Direction.RIGHT`, for example, but it may be easier to do
 * this if you're using them a lot:
 * ```ts
 * const { LEFT, RIGHT, FRONT } = Direction;
 * console.log(LEFT);
 * console.log(RIGHT);
 * ```
 */
declare enum Direction {
    LEFT = -1,
    RIGHT = 1,
    FRONT = 2
}
/**
 * @param dir - A direction (LEFT,RIGHT,FRONT)
 * @returns "left", "right", "front", or "back"
 */
declare function dirToString(dir: Direction): string;
/**
 * @param dir - A direction (LEFT,RIGHT,FRONT)
 * @param lowercase - Should the result start with a lowercase letter?
 * @returns "Go straight", "Turn left", or "Turn right"
 */
declare function dirToTurnString(dir: Direction): string;
declare function isLeftOrRight(dir: Direction): boolean;
export { Direction, dirToString, dirToTurnString, isLeftOrRight };