export type ViewerThresholds = {
    slowMs: number;
    fastMs: number;
    expensiveUsd: number;
};
export declare const DEFAULT_THRESHOLDS: ViewerThresholds;
export type Magnitude = "fast" | "normal" | "slow" | "cheap" | "expensive";
export declare function durationMagnitude(ms: number, t?: ViewerThresholds): Magnitude;
export declare function costMagnitude(usd: number, t?: ViewerThresholds): Magnitude;