import { Editor } from "../../interface";
declare type ObserverCallback = (entry: IntersectionObserverEntry) => void;
export declare class EditorScrollTopObserver {
    private intersectionObserver?;
    private entriesMap;
    observe(target: Element, callback: ObserverCallback): void;
    unobserve(target: Element): void;
    private callback;
    init(editor: Editor): void;
    destroy(editor: Editor): void;
}
export declare const editorScrollTopObserver: EditorScrollTopObserver;
export {};