import type { ComparisonResult, ThresholdConfig } from "./types.js";
import type { MetricsBatch } from "./metrics-batch.js";
/**
 * Compare a current benchmark run against one or more baseline runs.
 *
 * Baseline values are averaged across the provided runs. For each
 * scenario+metric pair in `current`, the function computes a percentage
 * change and applies the threshold test to classify the result as
 * improved, stable, or regressed.
 *
 * Metrics present in `current` but absent from every baseline are
 * excluded — new metrics have no history to regress against.
 *
 * @param current - MetricsBatch for the current run.
 * @param baseline - One or more baseline MetricsBatch objects to compare against.
 * @param config - Threshold configuration (default: 5 % percentage).
 * @returns A `ComparisonResult` with per-metric entries and an overall regression flag.
 */
export declare function compareRuns(current: MetricsBatch, baseline: MetricsBatch[], config?: ThresholdConfig): ComparisonResult;
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