declare class Viewport {
    private readonly maxRight;
    private readonly maxBottom;
    private readonly scrollX;
    private readonly scrollY;
    private readonly viewportWidth;
    private readonly viewportHeight;
    constructor(win: Window, doc: Document);
    canScrollIntoView({ x, y, width, height }: DOMRect): boolean;
    isInView({ x, y, width, height }: DOMRect): boolean;
}
export declare const clearViewportCache: () => null;
export declare const getViewport: (win: Window, doc: Document) => Viewport;
export type { Viewport };