import type { NullableCacheDataGeneratorAsync } from './types';
import { CacheData } from './base/CacheData';
import { CacheBranchAsync } from './CacheBranchAsync';
export declare class CacheDataAsync<T extends Record<string, any>, K extends keyof T> extends CacheData<T, K> {
    static readonly EmptyDataGenerator: () => Promise<undefined>;
    static Update<T extends Record<string, any>, K extends keyof T>(branch: CacheBranchAsync<T>, data: CacheDataAsync<T, K>, generator: NullableCacheDataGeneratorAsync<T, K>): Promise<CacheDataAsync<T, K>>;
    static Cache<T extends Record<string, any>, K extends keyof T>(branch: CacheBranchAsync<T>, data: CacheDataAsync<T, K>): Promise<CacheDataAsync<T, K>>;
    protected generator: NullableCacheDataGeneratorAsync<T, K>;
}