import { Threshold } from '../types/config';
/**
 * Parse a threshold string such as ">500ms", ">=2s", ">1000" into a Threshold.
 * Defaults to ">500ms" if the string is unparseable.
 */
export declare function parseThreshold(raw: string): Threshold;
/**
 * Returns true if `duration` breaches the threshold.
 */
export declare function isAboveThreshold(duration: number, threshold: Threshold): boolean;
/**
 * Critical = at least 3× the threshold value.
 */
export declare function isCritical(duration: number, threshold: Threshold): boolean;
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