/*!
 * Copyright (c) Microsoft Corporation and contributors. All rights reserved.
 * Licensed under the MIT License.
 */
import { ITelemetryContextProperties } from "@fluidframework/server-services-telemetry";
import type { RequestHandler, Request, Response } from "express";
/**
 * TelemetryContext helper that checks HTTP request and response for {@link TelemetryContextHeaderName} header
 * and returns global telemetry context properties with those request context properties included if they exist.
 * @internal
 */
export declare function getTelemetryContextPropertiesWithHttpInfo(req: Request, res: Response): Partial<ITelemetryContextProperties>;
/**
 * Express.js Middleware that binds the global telemetry context to the request for its lifetime.
 *
 * Specific telemetry context properties will be set in the response headers.
 * - {@link CorrelationIdHeaderName}: correlationId
 *
 * Requests from the Fluid client may not include a correlationId, so one is generated when unavailable.
 * @internal
 */
export declare const bindTelemetryContext: (serviceName: string) => RequestHandler;
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