import { InjectionKey, ComputedRef } from 'vue';
import { IWebchatButton } from '../types';
export interface ImageContext {
    onExpand: () => void;
    onClose: () => void;
    url: string;
    altText?: string;
    button?: IWebchatButton;
    isDownloadable: ComputedRef<boolean>;
}
export declare const ImageContextKey: InjectionKey<ImageContext>;
export declare function provideImageContext(context: ImageContext): void;
export declare function useImageContext(): ImageContext;