/**
 * Copyright (c) 2026 Oracle and/or its affiliates.  All rights reserved.
 * This software is dual-licensed to you under the Universal Permissive License (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl or Apache License 2.0. You may choose either license.
 */
/**
 * Node's native Fetch implementation does not support the `agent` option.
 * Requests with an agent must therefore use node-fetch.
 */
export declare function hasNodeHttpAgent(options: unknown): boolean;
/**
 * Loads node-fetch only for requests that provide a Node HTTP(S) agent.
 */
export declare function getNodeFetch(): any;
/**
 * Normalizes the request URI using the URL serializer of the selected Fetch
 * transport. The signer uses this URI so the signed request target matches the
 * request target sent to the server.
 */
export declare function getFetchRequestUri(uri: string, options: unknown): string;
/**
 * Executes a request with the selected Fetch implementation.
 */
export declare function fetchWithSelectedTransport(uri: string, options: RequestInit | undefined): Promise<any>;