/**
 * Prometheus metrics exporter for Fastify. Based on
 * {@link https://github.com/siimon/prom-client | prom-client}. Also by default
 * it adds fastify route response time metrics (histogram and summary).
 *
 * @packageDocumentation
 */
import type { IFastifyMetrics, IMetricsPluginOptions, IMetricsRouteContextConfig } from './types';
declare module 'fastify' {
    interface FastifyInstance {
        /** Metrics interface */
        metrics: IFastifyMetrics;
    }
    interface FastifyContextConfig extends IMetricsRouteContextConfig {
        /** Override route definition */
        statsId?: string;
        /** Disables metric collection on this route */
        disableMetrics?: boolean;
    }
}
export type * from './types';
/**
 * Metric plugin
 *
 * @example
 *
 * ```typescript
 *     import fastify from 'fastify'
 *     import fastifyMetrics, { IMetricsPluginOptions } from fastify-metrics
 *
 *     const options: IMetricsPluginOptions = { endpoint: '/metrics' }
 *     fastify()
 *      .register(fastifyMetrics, options)
 *      .get('/foo', (request, reply) => {
 *         reply.code(200);
 *         const delay = Math.random() * 10000;
 *         setTimeout(() => {
 *           reply.send({ id, delay });
 *         }, delay);
 *      })
 *      .ready()
 *      .listen(3000)
 * ```
 */
declare const _default: import("fastify").FastifyPluginCallback<Partial<IMetricsPluginOptions>, import("fastify").RawServerDefault, import("fastify").FastifyTypeProviderDefault, import("fastify").FastifyBaseLogger>;
export default _default;
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