declare type storageType = 'localStorage' | 'sessionStorage';
declare type cacheNotValueType = false;
declare type typeStr = 'number' | 'null' | 'undefined' | 'boolean' | 'array' | 'string' | 'object' | 'bigint' | 'symbol' | 'function' | 'regexp';
declare type mergeType<T> = T;
declare type getType<T> = mergeType<T | cacheNotValueType | string | undefined>;
interface IglobalVariableData {
    [key: string]: ICacheData;
}
interface IcacheOptions {
    /**
     * @description  使用哪种方式进行数据存储, 默认值 localStorage
     * @type { string }
     */
    storageType?: storageType;
    /**
     * @description  储存数据的前缀
     * @params { string } iweb-cache
     */
    prefix?: string;
    /**
     * @description  全局过期时间
     * @params { number } 单位毫秒
     */
    expires?: number;
}
interface ICacheData {
    /**
     * @description 存储的数据
     * @params { string | number | object }
     */
    value: string;
    /**
     * @description 单个数据的过期时间
     * @params { number } 单位秒
     */
    expires?: number;
    /**
     * @description 储存数据的原始类型
     */
    valueType: typeStr;
}
interface IwebCache {
    appData: IglobalVariableData;
    /**
     * @description 设置缓存
     */
    save<T = any>(key: string, value: T, expires?: number): boolean;
    /**
     * @description  覆盖缓存数据，但不更新过期时间
     */
    cover(key: string, value: any): boolean;
    /**
     * @description 根据指定key获取缓存数据
     */
    get<T = any>(key: string): getType<T>;
    /**
     * @description  获取多条缓存数据
     * @example
     * const [ token,token1 ] = cache.getAll('token','token1')
     */
    getAll(...arg: string[]): [any];
    /**
     * @description  获取缓存内容的大小
     */
    getCacheSize(): number | boolean;
    /**
     * @description  根据key删除指定缓存数据
     */
    del(key: string): boolean;
    /**
     * @description  清空全部缓存数据
     */
    clear(): boolean;
}
interface IclientStore {
    storage: Storage;
    options: IcacheOptions;
    save(value: IglobalVariableData): void;
    get(key: string): string | null;
    del(key: string): void;
    clear(): void;
    getCacheData(): IglobalVariableData;
}

declare class WebCache implements IwebCache {
    appData: IglobalVariableData;
    private clientStore;
    constructor(clientStore: IclientStore);
    save(key: string, value: any, expires?: number): boolean;
    get<T = any>(key: string): getType<T>;
    getAll(...arg: string[]): [any];
    del(key: string): boolean;
    clear(): boolean;
    cover(key: string, value: any): boolean;
    getExpires(expires?: number): number;
    getCacheSize(): number | false;
}

declare function export_default(options?: IcacheOptions): WebCache;

export default export_default;