import { Client } from './client.js';
import { SampleRate } from '../types/sample-rate.js';
import type { TelemetryMeasurements, TelemetryProperties } from '../types/index.js';
/**
 *
 */
declare class ApplicationInsightClient extends Client {
    private readonly clients;
    /**
     *
     * @param applicationKey Application key to identify the Azure Application Insight resource
     * @param extensionName Unique name of the extension in the format of {publisher}.{extension}
     * @param extensionVersion Conventional version number of the extension
     */
    constructor(applicationKey: string, extensionName: string, extensionVersion: string);
    /**
     * Send a telemetry event to Azure Application Insights. This API makes sure the telemetry event
     * is flushed to Azure backend before executing the next statement. Since this API blocks
     * normal execution flow, please use this API cautiously. See `report()` method for non-blocking
     * usage.
     *
     * @param eventName Categorize the type of the event within the scope of an extension.
     * @param properties A set of string properties to be reported
     * @param measurements  A set of numeric measurements to be reported
     * @param sampleRate Sampling the event to be sent
     * @param ignoreSettings Ignore telemetryEnabled settings and skip submitting telemetry data
     * @returns Promise<void>
     */
    reportBlocking(eventName: string, properties: TelemetryProperties, measurements: TelemetryMeasurements, sampleRate: SampleRate | undefined, ignoreSettings?: boolean): Promise<void>;
    /**
     * Send a telemetry event to Azure Application Insights. The telemetry event sending is still non-blocking
     * in this API. To make sure telemetry event is sent to Azure backend before next statement, please see
     * `reportBlocking()`.
     *
     * @param eventName Categorize the type of the event within the scope of an extension.
     * @param properties A set of string properties to be reported
     * @param measurements  A set of numeric measurements to be reported
     * @param sampleRate Sampling the event to be sent
     * @param telemetryHelperProperties Properties that are passed to specific TelemetryClient for generating specific properties (E.g. ToolsSuiteTelemetryClient)
     * @param ignoreSettings Ignore telemetryEnabled settings and skip submitting telemetry data
     */
    report(eventName: string, properties: TelemetryProperties, measurements: TelemetryMeasurements, sampleRate: SampleRate | undefined, telemetryHelperProperties?: {
        [key: string]: string;
    }, ignoreSettings?: boolean): Promise<void>;
    /**
     * Provide specification of telemetry event to be sent.
     *
     * @param eventName Categorize the type of the event within the scope of an extension.
     * @param properties A set of string properties to be reported
     * @param measurements A set of numeric measurements to be reported
     * @param sampleRate  Sampling the event to be sent
     * @returns TelemetryClient instance and telemetry event
     */
    private prepareClientAndEvent;
    /**
     * Send telemetry event in blocking style. It blocks
     * the subsequent statements until telemetry event has been sent.
     *
     * @param client TelemetryClient instance
     * @param event Telemetry event
     * @returns Promise<void>
     */
    private trackEventBlocking;
    /**
     * Send teleemtry event in non-blocking fashion.
     *
     * @param client Telemetry client instance
     * @param event Telemetry event
     * @returns Send telemetry succeeded or not
     */
    private trackEvent;
    /**
     * Create telemetry client instance based on sample rate.
     *
     * @param sampleRate Sampling telemetry event
     * @returns Telemetry client instance
     */
    private createTelemetryClient;
}
export { ApplicationInsightClient };
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