/*!
 * Copyright (c) Microsoft. All rights reserved.
 */
import { LogLevel } from "../core/LogLevel";
import { TelemetryClient, TelemetryProperties } from "./TelemetryClient";
export declare class ApplicationInsightsClient implements TelemetryClient {
    static init(appInsightsInstrumentationKey: string): TelemetryClient;
    private static _clientInstance;
    private _appInsightsImpl;
    private _appInsights;
    trackEvent(eventName: string, properties?: TelemetryProperties): void;
    startTrackEvent(eventName: string): void;
    stopTrackEvent(eventName: string, properties?: TelemetryProperties): void;
    trackError(errorMessage: string, properties?: TelemetryProperties): void;
    trackException(errorInfo: Error, properties?: TelemetryProperties, level?: LogLevel): void;
    trackTrace(messageString: string, properties?: TelemetryProperties, level?: LogLevel): void;
    flush(): void;
    private _logLevelToSeverityLevel;
}