import LRU from "lru-cache";
import { ICacheStorage } from "./storage-interface";
/**
 * LRU in memory cache storage (does not implement cache signatures)
 * All items are stored in memory and are immutable
 */
export declare class LruInMemoryStorage implements ICacheStorage {
    private cache;
    /**
     * Create a wrapper class for lru-cache package
     * @param options lru-cache cache options
     */
    constructor(options: LRU.Options<unknown, unknown>);
    /**
     * Retrieves cache key
     * @param key
     * @returns
     */
    get<T>(key: string, immutable?: boolean): Promise<T | undefined>;
    /**
     * Sets cache key
     * @param key key to be set
     * @param ttlMilliseconds milliseconds to keep in cache
     * @param value value to store
     */
    set<T>(key: string, ttlMilliseconds: number, value: T, immutable?: boolean): Promise<void>;
    /**
     *
     * @param key
     * @returns
     */
    evict(key: string): Promise<void>;
}
//# sourceMappingURL=lru-in-memory.d.ts.map