import { UnixTimestamp } from '@thermopylae/core.declarations';
import { EntryExpiredCallback, ExpirableEntry, GarbageCollector } from './interface';
/**
 * {@link GarbageCollector} implementation which uses a map of buckets to keep entries that needs to be evicted. <br/>
 * Each timestamp has an according bucket with entries that need to be evicted at that time. <br/>
 * A timer is set to tick on each second and evicts all entries from the bucket corresponding to timestamp when timer fired.
 *
 * @template T	Type of the cache entry.
 */
declare class BucketGarbageCollector<T extends ExpirableEntry> implements GarbageCollector<T> {
    private static readonly EVICTION_TIMEOUT;
    private readonly buckets;
    private readonly evictionTimer;
    private entryExpiredCb;
    constructor(entryExpiredCb?: EntryExpiredCallback<T>);
    get idle(): boolean;
    get size(): number;
    manage(entry: T): void;
    update(oldExpiration: UnixTimestamp, entry: T): void;
    leave(entry: T): void;
    clear(): void;
    setEntryExpiredCallback(cb: EntryExpiredCallback<T>): void;
    private evictionTimerHandler;
    private static defaultEntryExpiredCallback;
}
export { BucketGarbageCollector };