import { TelemetryClient } from "applicationinsights";
import { Metrics, Properties } from "../../models";
export declare class ApplicationInsightsMetrics implements Metrics {
    private localMetricCache;
    private client;
    private defaultProperties?;
    constructor(client: TelemetryClient, defaultProperties?: Properties);
    getProperties(): Properties | undefined;
    /**
     * Emits a metric event, which sets the value of the metric to the value passed in. Useful for Gauge style metrics.
     *
     * @param {string} metricName  The target metric name.
     * @param {number} value The current value of the metric.
     * @param {Properties | undefined} properties A string/string map of additional properties to describe this metric series.
     */
    set(metricName: string, value: number, properties?: Properties): void;
    /**
     * Emits a metric event, which increments the value of the metric by 1. Useful for Counter style metrics.
     *
     * @param {string} metricName The target metric name.
     * @param {Properties | undefined} properties A string/string map of additional properties to describe this metric series.
     */
    increment(metricName: string, properties?: Properties): void;
    /**
     * Emits a metric event, which increments the value of the metric by N. Useful for Counter style metrics.
     *
     * @param {string} metricName The target metric name.
     * @param {number} value The amount you want to increment the specified metric
     * @param {Properties | undefined} properties A string/string map of additional properties to describe this metric series.
     */
    incrementBy(metricName: string, value: number, properties?: Properties): void;
    /**
     * Immediately sends any metrics that may not yet have been sent to Application Insights. Call this on program exit or
     * crash to ensure that all metrics have been remotely recorded.
     */
    flush(): void;
    addDefaultProperties(properties: Properties): void;
    private trackMetric;
    /**
     * Gets a key for the metric, for use in the in memory store.
     *
     * @param {string} metricName name of the metric
     * @param {Properties} properties key/value pairs of properties to further describe the metric.
     * @returns {string} the key for use in the memory storage.
     */
    private getKey;
}