import { IAsynchronousCacheType, ISynchronousCacheType } from '../../types/cache.types.js';
export declare abstract class AbstractBaseStrategy implements IAsynchronousCacheType {
    protected storage: IAsynchronousCacheType | ISynchronousCacheType;
    constructor(storage: IAsynchronousCacheType | ISynchronousCacheType);
    abstract getItem<T>(key: string): Promise<T | undefined>;
    abstract setItem(key: string, content: any, options: any): Promise<void>;
    abstract clear(): Promise<void>;
}