import { AbortSignal } from 'abort-controller';
import { ImageInfo as info } from './imageInfo';
export type ImageInfo = info;
export declare function fetchImageUrls(albumSharedUrl: string, signal?: AbortSignal): Promise<info[] | null>;
export declare function extractAppended(before: ImageInfo[], after: ImageInfo[]): info[];
export declare function validityVerification(): Promise<boolean>;