import { ICache } from "../cache";
/**
 * A simple LRU cache implementation.
 */
export declare class LRUCache<K, V> implements ICache<K, V> {
    private maxSize;
    private cache;
    constructor(maxSize?: number);
    get(key: K): V | undefined;
    set(key: K, value: V, ttl?: number): void;
    delete(key: K): void;
    clear(): void;
}