import type { IPoolItem, IPoolItemWithStats } from '../types';
import { AbstractPool } from './AbstractPool';
/**
 * Simple roundrobin
 */
export declare class RoundRobin<TKey, TValue extends IPoolItem> extends AbstractPool<TKey, TValue> implements IPoolItemWithStats {
    readonly agents: Map<TKey, TValue>;
    protected iterator: Iterator<TValue, TValue>;
    constructor(agents: Map<TKey, TValue>);
    getNextItem(): TValue;
    [Symbol.iterator](): Generator<TValue>;
}
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