import type { LRUCacheOptions } from "./cache/stores/memory/types.js";
interface LRUOptions<K, V> {
    maxEntries?: number;
    /** Byte cap for stored values. Defaults to the adapter's 50 MiB limit. */
    maxSizeBytes?: number;
    ttlMs?: number;
    cleanupIntervalMs?: number;
    /** Called whenever an entry leaves the cache, including delete/clear/expiry. */
    onEvict?: LRUCacheOptions["onEvict"];
    /** Compute the retained byte size used for memory-bound eviction. */
    estimateSizeOf?: (value: V) => number;
}
export declare class LRUCache<K, V> {
    private adapter;
    private cleanupTimer?;
    private cleanupIntervalMs;
    private ttlMs?;
    constructor(options?: LRUOptions<K, V>);
    private startPeriodicCleanup;
    private stopCleanupTimer;
    private toStringKey;
    get size(): number;
    has(key: K): boolean;
    get(key: K): V | undefined;
    set(key: K, value: V): void;
    delete(key: K): boolean;
    clear(): void;
    cleanup(): void;
    destroy(): void;
    keys(): IterableIterator<K>;
    entries(): IterableIterator<[K, V]>;
}
export {};
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