import type { LiteralUnion } from 'type-fest';
declare class KeyValueCache<Keys = string> {
    #private;
    clear(): this;
    has(key: string): boolean;
    get(key?: LiteralUnion<Keys, string>): any;
    get(): Record<string, any>;
    set(key: LiteralUnion<Keys, string>, value: any): this;
    merge(obj: Record<string, any>): this;
    remove(key: LiteralUnion<Keys, string>): this;
}
export default KeyValueCache;