/**
 * Gets the local IP address(es) of the machine.
 * @param family - The IP version family to use (IPv4 or IPv6). Default is 'IPv4'.
 * @param skipInternal - Whether to skip internal interfaces (like loopback). Default is true.
 * @returns An array of IP addresses.
 */
export declare function getLocalIPs(family?: "IPv4" | "IPv6", skipInternal?: boolean): string[];
/**
 * Gets the primary local IP address.
 * @param family - The IP version family to use (IPv4 or IPv6). Default is 'IPv4'.
 * @returns The primary IP address or undefined if not found.
 */
export declare function getPrimaryIP(family?: "IPv4" | "IPv6"): string | undefined;
/**
 * Formats a URL with the IP address instead of localhost.
 * @param port - The port number to use.
 * @param protocol - The protocol to use (http or https). Default is 'http'.
 * @param family - The IP version family to use (IPv4 or IPv6). Default is 'IPv4'.
 * @returns The formatted URL or undefined if IP not found.
 */
export declare function formatIPUrl(port: number, protocol?: "http" | "https", family?: "IPv4" | "IPv6"): string | undefined;