///
export default class ProxyUtil {
static env: NodeJS.ProcessEnv;
static readonly httpProxy: string | undefined;
static readonly httpsProxy: string | undefined;
static readonly noProxy: string | undefined;
static shouldDodgeProxy(host: string): boolean;
static usingProxy(host?: string): boolean;
static readonly sslCertDir: Array;
static readonly sslCertFile: Array;
static readonly certs: Array;
static agent(https: boolean, host?: string): any;
}