import PromiseMerger from '../_util/PromiseMerger';
export declare class AttachmentStore {
    batchCallback: (uuids: string[]) => Promise<{
        [key: string]: number | undefined;
    }>;
    merger: PromiseMerger<number | undefined, []>;
    fetchCountInBatch(uuid: string): Promise<number | undefined>;
}
declare const _default: AttachmentStore;
export default _default;