export declare const highlightBlock: (clonedBlockDom: HTMLElement, boxRect: DOMRect) => void;
export declare const unhighlightBlock: () => void;
export declare const startScrollEndTracking: (dom: HTMLElement & {
    _prevRect?: DOMRect;
    _timer?: any;
}, callback: () => void) => void;
export declare const stopScrollEndTracking: (dom: HTMLElement & {
    _timer?: any;
}) => void;
