import type { NullableCacheDataGeneratorSync, CacheDataGeneratorSync, CacheDirection } from './types';
import { CacheBranch } from './base/CacheBranch';
import { CacheDataSync } from './CacheDataSync';
export declare class CacheBranchSync<T extends Record<string, any> = Record<string, any>> extends CacheBranch<T> {
    protected readonly data: CacheDataSync<T, keyof T>;
    protected readonly branches: Map<string, CacheBranchSync<T>>;
    protected readonly root: CacheBranchSync<T>;
    constructor(generator?: NullableCacheDataGeneratorSync<T, keyof T>, root?: CacheBranchSync<T>);
    protected ensureBranch<K extends keyof T>(key: K, generator: NullableCacheDataGeneratorSync<T, K>): CacheBranchSync<T>;
    protected getBranch<K extends keyof T>(key: K): CacheBranchSync<T> | undefined;
    cache(key: keyof T, recursive?: CacheDirection): this;
    ensure<K extends keyof T>(key: K, generator: CacheDataGeneratorSync<T, K>): CacheDataSync<T, K>;
    get<K extends keyof T>(key: K): CacheDataSync<T, K> | undefined;
    set<K extends keyof T>(key: K, generator: CacheDataGeneratorSync<T, K>): this;
    delete(key: keyof T): this;
}