export interface NumericStats {
    mean: number;
    median: number;
    min: number;
    max: number;
    spread: number;
}
export interface MetricThreshold {
    medianMax: number;
    maxMax: number;
}
export interface U2PerformanceThresholds {
    metaIndexMs?: MetricThreshold;
    referenceResolveMs?: MetricThreshold;
    graphReferenceWriteMs?: MetricThreshold;
}
export interface U2ThresholdVerdict {
    pass: boolean;
    metrics: Record<string, {
        pass: boolean;
        actual: {
            median: number;
            max: number;
        };
        expected: MetricThreshold;
    }>;
}
export declare function computeNumericStats(values: number[]): NumericStats;
export declare function evaluateMetricsThresholds(metrics: {
    metaIndexMs: number[];
    referenceResolveMs: number[];
    graphReferenceWriteMs: number[];
}, thresholds: U2PerformanceThresholds): U2ThresholdVerdict;