import tls from 'tls';
import { HttpCertificate } from '../../../models/ClientCertificate.js';
/**
 * Adds client certificate to the request configuration options.
 */
export declare function addClientCertificate(certificate: HttpCertificate | null, options: tls.ConnectionOptions): void;
/**
 * Checks certificate identity using TLS api.
 */
export declare function checkServerIdentity(host: string, cert: tls.PeerCertificate | null): Error | undefined;
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