export declare type WaypointState = {
    el: Element | undefined;
    going: Going | undefined;
    direction: Direction | undefined;
};
export declare enum Going {
    In = "IN",
    Out = "OUT"
}
export declare enum Direction {
    Up = "UP",
    Down = "DOWN",
    Left = "LEFT",
    Right = "RIGHT"
}
export declare const createObserver: (options: IntersectionObserverInit | undefined) => (callback: Function) => IntersectionObserver;