import { HttpsProxyAgent, HttpProxyAgent } from 'hpagent';
export declare function getPackageLatestNpmVersion(pkg: string): string;
export declare function getHttpProxyAgent(targetUrl: string, proxyUrl?: string): HttpProxyAgent | HttpsProxyAgent | undefined;
export declare function getCommonHttpHeaders(pkgName: string, targetUrl: string, proxyUrl?: string): {
    agent?: HttpProxyAgent | HttpsProxyAgent | undefined;
    headers: {
        'User-Agent': string;
    };
};