import { Counter, Gauge, Histogram } from 'prom-client';
export { EventLoopMetricLabels, RequestsMetricLabels } from './MetricNames';
export declare const createTotalRequestsInstrument: () => Counter<import("./MetricNames").RequestsMetricLabels>;
export declare const createTotalAbortedRequestsInstrument: () => Counter<import("./MetricNames").RequestsMetricLabels>;
export declare const createRequestsTimingsInstrument: () => Histogram<import("./MetricNames").RequestsMetricLabels>;
export declare const createRequestsResponseSizesInstrument: () => Histogram<import("./MetricNames").RequestsMetricLabels>;
export declare const createConcurrentRequestsInstrument: () => Gauge<string>;
export declare const createEventLoopLagMaxInstrument: () => Gauge<string>;
export declare const createEventLoopLagPercentilesInstrument: () => Gauge<import("./MetricNames").EventLoopMetricLabels>;