import { Context, ContextManager, Event, Observable } from '@zcomponent/core';
import * as Zappar from '@zappar/zappar';
/** @zui */
export declare class ImageAnchorContext extends Context {
    anchor?: Zappar.ImageAnchor;
    onVisible: Event<[Zappar.ImageAnchor]>;
    onNotVisible: Event<[Zappar.ImageAnchor]>;
    /** @zui */
    visible: Observable<boolean, never>;
    /** @zui */
    anchorID: Observable<string, never>;
    constructor(contextManager: ContextManager, props: {});
}