export declare const createMockDOMRect: (top: number, left: number, width: number, height: number) => DOMRect;
export declare const createStyledElement: (tagName?: string, styles?: Partial<CSSStyleDeclaration>) => HTMLElement;
export declare const createScrollableParent: (options?: Partial<CSSStyleDeclaration> & {
    contentHeight?: string;
    appendToBody?: boolean;
}) => {
    parent: HTMLElement;
    target: HTMLElement;
};
export declare const createNestedScrollableParents: (options?: {
    outer?: Partial<CSSStyleDeclaration> & {
        contentHeight?: string;
    };
    inner?: Partial<CSSStyleDeclaration> & {
        contentHeight?: string;
    };
}) => {
    outerParent: HTMLElement;
    innerParent: HTMLElement;
    target: HTMLElement;
};
export declare const setupWindowDimensions: () => void;