interface MetricsSnapshot {
    readonly counters: Record<string, number>;
    readonly histograms: Record<string, {
        p50: number;
        p95: number;
        p99: number;
        count: number;
    }>;
    readonly gauges: Record<string, number>;
}
interface Metrics {
    increment(name: string, by?: number): void;
    record(name: string, value: number): void;
    gauge(name: string, value: number): void;
    snapshot(): MetricsSnapshot;
    newOperationId(): string;
}
declare function createMetrics(): Metrics;

export { type Metrics, type MetricsSnapshot, createMetrics };