import type { ResourceTiming } from '../request/ResourceTiming.js';
import type { ThroughputEstimator } from './ThroughputEstimator.js';
/**
 * Zero-Lag Exponential Moving Average (ZLEMA) throughput estimator
 *
 * @group Throughput
 *
 * @beta
 */
export declare class ZlemaEstimator implements ThroughputEstimator {
    private samples;
    sample(sample: ResourceTiming): void;
    getEstimate(): number;
}
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