import { DoublyLinkedListNode } from '../../data-structures/list/doubly-linked';
import { CacheReplacementPolicy, EntryValidity, Deleter } from '../../contracts/cache-replacement-policy';
import { CacheEntry } from '../../contracts/commons';
import { CacheBackendElementsCount } from '../../contracts/cache-backend';
/**
 * @private
 */
interface EvictableCacheEntry<Key, Value> extends CacheEntry<Key, Value>, DoublyLinkedListNode<EvictableCacheEntry<Key, Value>> {
}
/**
 * [Least Recently Used](https://en.wikipedia.org/wiki/Cache_replacement_policies#Least_recently_used_(LRU) "Least recently used (LRU)") eviction policy.
 *
 * @template Key				Type of the key.
 * @template Value				Type of the value.
 * @template ArgumentsBundle	Type of the arguments bundle.
 */
declare class LRUEvictionPolicy<Key, Value, ArgumentsBundle> implements CacheReplacementPolicy<Key, Value, ArgumentsBundle> {
    private readonly cacheMaxCapacity;
    private readonly cacheBackendElementsCount;
    private deleteFromCache;
    private usageRecency;
    /**
     * @param cacheMaxCapacity				{@link Cache} maximum capacity.
     * @param cacheBackendElementsCount		Cache backend elements count.
     */
    constructor(cacheMaxCapacity: number, cacheBackendElementsCount: CacheBackendElementsCount);
    /**
     * @inheritDoc
     */
    onHit(entry: EvictableCacheEntry<Key, Value>): EntryValidity;
    /**
     * @inheritDoc
     */
    onMiss(): void;
    /**
     * @inheritDoc
     */
    onSet(entry: EvictableCacheEntry<Key, Value>): void;
    /**
     * @inheritDoc
     */
    onUpdate(): void;
    /**
     * @inheritDoc
     */
    onDelete(entry: EvictableCacheEntry<Key, Value>): void;
    /**
     * @inheritDoc
     */
    onClear(): void;
    /**
     * @inheritDoc
     */
    setDeleter(deleter: Deleter<Key, Value>): void;
}
export { LRUEvictionPolicy, EvictableCacheEntry };