/**
 * Request Utilities
 *
 * Utility functions for request classification, monitoring path detection,
 * and timeout configuration.
 *
 * @module server/runtime-handler/request-utils
 */
import { HTTP_GATEWAY_TIMEOUT } from "../../utils/constants/http.js";
/** Check if host is a private/internal IP address */
export declare function isInternalHost(host: string): boolean;
/** Monitoring paths that should skip domain lookup */
export declare const MONITORING_PATHS: Set<string>;
/** Get request timeout in milliseconds (configurable via getRequestTimeout() env var) */
export declare function getRequestTimeout(): number;
export { HTTP_GATEWAY_TIMEOUT };
/** Sentinel value for timeout detection (avoids string comparison) */
export declare const TIMEOUT_SENTINEL: unique symbol;
/** Check if request path is a monitoring endpoint that should skip domain lookup */
export declare function isMonitoringPath(pathname: string): boolean;
/** Lightweight paths that should skip concurrency limiting (modules, static assets) */
export declare const LIGHTWEIGHT_PATH_PREFIXES: string[];
/** Check if path is a lightweight request that should skip concurrency limiting */
export declare function isLightweightPath(pathname: string): boolean;
/** Check if path is the WebSocket endpoint (long-lived, handled by HMR handler) */
export declare function isWebSocketPath(pathname: string): boolean;
/** Check whether a request is the exact HMR WebSocket upgrade that must retain native identity. */
export declare function isHMRWebSocketUpgrade(request: Request, pathname: string): boolean;
/**
 * Requests that do not need render-specific enriched context.
 *
 * These routes still receive the normal handler context, but they can skip
 * render cache prefix/content-source derivation and the enriched render payload.
 */
export declare function shouldSkipEnrichedContext(pathname: string): boolean;
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