import type { HttpMethod, Route } from "../types/index.js";
/**
 * Normalize HEAD requests to use GET route if no explicit HEAD route exists.
 * Returns the method to use for route matching.
 */
export declare function normalizeHeadMethod(method: HttpMethod, path: string, routes: Route[]): HttpMethod;
/**
 * Convert a response to HEAD format (empty body, preserve headers and status).
 */
export declare function toHeadResponse(response: Response): Response;
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