/**
 * Proxy detection and configuration for network requests.
 *
 * Detects HTTP_PROXY / HTTPS_PROXY / ALL_PROXY environment variables
 * and configures undici's global dispatcher so that all fetch() calls
 * (including those made internally by giget) go through the proxy.
 */
/**
 * Mask credentials in a proxy URL for safe logging.
 *
 * Replaces username and password with "***" so that credentials
 * are never printed to the console or written to log files.
 */
export declare function maskProxyUrl(url: string): string;
/**
 * Set up a global proxy dispatcher if proxy environment variables are present.
 *
 * Uses undici's ProxyAgent and setGlobalDispatcher so that all fetch() calls
 * go through the proxy. The try/catch handles malformed proxy URLs (e.g.
 * socks5://, missing protocol) that would cause `new ProxyAgent()` to throw.
 *
 * @returns The proxy URL string if a proxy was configured, or null otherwise.
 */
export declare function setupProxy(): string | null;
//# sourceMappingURL=proxy.d.ts.map