import type { RequestTiming } from './types.js';
export declare const createTiming: (highPrecision?: boolean) => RequestTiming;
export declare const calculateTiming: (timing: RequestTiming) => RequestTiming;
export declare const calculateDuration: (startTime: number, timing?: RequestTiming) => number;
export declare const roundDuration: (duration: number, decimals?: number) => number;
export declare const formatDuration: (duration: number) => string;
export declare class PerformanceTracker {
    private metrics;
    record(key: string, duration: number): void;
    getAverage(key: string): number | null;
    getPercentile(key: string, percentile: number): number | null;
    getSummary(key: string): {
        count: number;
        min: number;
        max: number;
        avg: number;
        p50: number;
        p95: number;
        p99: number;
    } | null;
    clear(): void;
}
export declare const globalPerformanceTracker: PerformanceTracker;
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