/**
 * Copyright 2025 Vybestack LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @plan PLAN-20251125-LOCALAUTH.P01
 * @requirement REQ-LOCAL-001
 *
 * Utility to detect local/private network endpoints that don't require authentication.
 * Used to fix Issue #598 where Ollama and other local AI servers were incorrectly
 * requiring authentication.
 */
/**
 * Checks if a URL points to a local or private network endpoint.
 *
 * Local endpoints include:
 * - localhost
 * - 127.0.0.0/8 (IPv4 loopback range - 127.0.0.0 - 127.255.255.255)
 * - [::1] (IPv6 loopback)
 * - Private IP ranges (RFC 1918):
 *   - 10.0.0.0/8 (10.0.0.0 - 10.255.255.255)
 *   - 172.16.0.0/12 (172.16.0.0 - 172.31.255.255)
 *   - 192.168.0.0/16 (192.168.0.0 - 192.168.255.255)
 *
 * @param url - The URL to check (can be undefined or empty)
 * @returns true if the URL points to a local/private endpoint, false otherwise
 */
export declare function isLocalEndpoint(url: string | undefined): boolean;