/**
 * memory-journal-mcp — HTTP Transport Handlers
 *
 * Standalone handler functions for utility endpoints and auth middleware.
 */
import type { Request, Response } from 'express';
import type { ServerRuntime } from '../../utils/maintenance-lock.js';
/**
 * Handle the /health endpoint
 */
export declare function handleHealthCheck(_req: Request, res: Response): void;
/**
 * Handle the /metrics endpoint (Prometheus format)
 */
export declare function handlePrometheusMetrics(runtime: ServerRuntime): (req: Request, res: Response) => void;
/**
 * Handle the / endpoint — helpful for browser visitors and debugging
 */
export declare function handleRootInfo(_req: Request, res: Response): void;
/**
 * Create a bearer token authentication middleware.
 * Bypasses /health and /metrics endpoints. Uses timing-safe comparison.
 */
export declare function createAuthMiddleware(authToken: string): (req: Request, res: Response, next: () => void) => void;
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