/**
 * Copyright (c) 2026 AzerothJS.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
/**
 * The structural minimum {@link logRequests} writes through: an info line per request, an error
 * line per 5xx. `@azerothjs/logger`'s Logger satisfies it, and so does any logging library
 * behind a five-line adapter the application owns.
 */
export interface RequestLogger {
    info(message: string, fields?: Record<string, unknown>): void;
    error(message: string, fields?: Record<string, unknown>): void;
}
/**
 * The standard request-logging observer: one info line per completed request with method,
 * path, status, and wall time; 5xx log at error level. A correlation id assigned by the
 * `requestId` edge middleware rides along automatically. Wire it as `observe` on the App.
 */
export declare function logRequests(logger: RequestLogger): {
    onComplete(request: Request, response: Response, durationMs: number): void;
};