export declare type keyable = string | number | symbol;
export declare type KeyExtractor<T extends any[], R = keyable> = ((...args: T) => R) | R;
export declare type StoreDec<A extends any[]> = (key: KeyExtractor<A>) => MethodDecorator;
export declare type UpdateDec<A extends any[]> = (key: KeyExtractor<A>) => MethodDecorator;
export declare type RemoveDec<A extends any[]> = (key: KeyExtractor<A, keyable[]>) => MethodDecorator;
export interface Store<K extends keyable = string, R = any> {
    set(key: K, val: any): Promise<boolean>;
    get(key: K): Promise<R>;
    remove(key: K): Promise<boolean>;
}
export declare type PromiseFunc<A extends any[], R> = (...args: A) => Promise<R> | R;