import type { IncomingMessage } from 'http';
import type { ParsedUrlQuery } from 'querystring';
import type { UrlWithParsedQuery } from 'url';
import type { BaseNextRequest } from './base-http';
import type { CloneableBody } from './body-streams';
import type { RouteMatch } from './route-matches/route-match';
import type { NEXT_RSC_UNION_QUERY } from '../client/components/app-router-headers';
import type { ResponseCacheEntry, ServerComponentsHmrCache } from './response-cache';
import type { PagesDevOverlayBridgeType } from '../next-devtools/userspace/pages/pages-dev-overlay-setup';
import type { OpaqueFallbackRouteParams } from './request/fallback-params';
import type { IncrementalCache } from './lib/incremental-cache';
export declare const NEXT_REQUEST_META: unique symbol;
export type NextIncomingMessage = (BaseNextRequest | IncomingMessage) & {
    [NEXT_REQUEST_META]?: RequestMeta;
};
/**
 * The callback function to call when a response cache entry was generated or
 * looked up in the cache. When it returns true, the server assumes that the
 * handler has already responded to the request and will not do so itself.
 */
export type OnCacheEntryHandler = (
/**
 * The response cache entry that was generated or looked up in the cache.
 */
cacheEntry: ResponseCacheEntry, 
/**
 * The request metadata.
 */
requestMeta: {
    /**
     * The URL that was used to make the request.
     */
    url: string | undefined;
}) => Promise<boolean | void> | boolean | void;
export interface RequestMeta {
    /**
     * The query that was used to make the request.
     */
    initQuery?: ParsedUrlQuery;
    /**
     * The URL that was used to make the request.
     */
    initURL?: string;
    /**
     * The protocol that was used to make the request.
     */
    initProtocol?: string;
    /**
     * The body that was read from the request. This is used to allow the body to
     * be read multiple times.
     */
    clonableBody?: CloneableBody;
    /**
     * True when the request matched a locale domain that was configured in the
     * next.config.js file.
     */
    isLocaleDomain?: boolean;
    /**
     * True when the request had locale information stripped from the pathname
     * part of the URL.
     */
    didStripLocale?: boolean;
    /**
     * If the request had it's URL rewritten, this is the URL it was rewritten to.
     */
    rewroteURL?: string;
    /**
     * The cookies that were added by middleware and were added to the response.
     */
    middlewareCookie?: string[];
    /**
     * The match on the request for a given route.
     */
    match?: RouteMatch;
    /**
     * The incremental cache to use for the request.
     */
    incrementalCache?: IncrementalCache;
    /**
     * The server components HMR cache, only for dev.
     */
    serverComponentsHmrCache?: ServerComponentsHmrCache;
    /**
     * Equals the segment path that was used for the prefetch RSC request.
     */
    segmentPrefetchRSCRequest?: string;
    /**
     * True when the request is for the prefetch flight data.
     */
    isPrefetchRSCRequest?: true;
    /**
     * True when the request is for the flight data.
     */
    isRSCRequest?: true;
    /**
     * A search param set by the Next.js client when performing RSC requests.
     * Because some CDNs do not vary their cache entries on our custom headers,
     * this search param represents a hash of the header values. For any cached
     * RSC request, we should verify that the hash matches before responding.
     * Otherwise this can lead to cache poisoning.
     * TODO: Consider not using custom request headers at all, and instead encode
     * everything into the search param.
     */
    cacheBustingSearchParam?: string;
    /**
     * True when the request is for the `/_next/data` route using the pages
     * router.
     */
    isNextDataReq?: true;
    /**
     * Postponed state to use for resumption. If present it's assumed that the
     * request is for a page that has postponed (there are no guarantees that the
     * page actually has postponed though as it would incur an additional cache
     * lookup).
     */
    postponed?: string;
    /**
     * If provided, this will be called when a response cache entry was generated
     * or looked up in the cache.
     *
     * @deprecated Use `onCacheEntryV2` instead.
     */
    onCacheEntry?: OnCacheEntryHandler;
    /**
     * If provided, this will be called when a response cache entry was generated
     * or looked up in the cache.
     */
    onCacheEntryV2?: OnCacheEntryHandler;
    /**
     * The previous revalidate before rendering 404 page for notFound: true
     */
    notFoundRevalidate?: number | false;
    /**
     * In development, the original source page that returned a 404.
     */
    developmentNotFoundSourcePage?: string;
    /**
     * The path we routed to and should be invoked
     */
    invokePath?: string;
    /**
     * The specific page output we should be matching
     */
    invokeOutput?: string;
    /**
     * The status we are invoking the request with from routing
     */
    invokeStatus?: number;
    /**
     * The routing error we are invoking with
     */
    invokeError?: Error;
    /**
     * The query parsed for the invocation
     */
    invokeQuery?: Record<string, undefined | string | string[]>;
    /**
     * Whether the request is a middleware invocation
     */
    middlewareInvoke?: boolean;
    /**
     * Whether the request should render the fallback shell or not.
     */
    renderFallbackShell?: boolean;
    /**
     * Whether the request is for the custom error page.
     */
    customErrorRender?: true;
    /**
     * Whether to bubble up the NoFallbackError to the caller when a 404 is
     * returned.
     */
    bubbleNoFallback?: true;
    /**
     * True when the request had locale information inferred from the default
     * locale.
     */
    localeInferredFromDefault?: true;
    /**
     * The locale that was inferred or explicitly set for the request.
     */
    locale?: string;
    /**
     * The default locale that was inferred or explicitly set for the request.
     */
    defaultLocale?: string;
    /**
     * The relative project dir the server is running in from project root
     */
    relativeProjectDir?: string;
    /**
     * The dist directory the server is currently using
     */
    distDir?: string;
    /**
     * The query after resolving routes
     */
    query?: ParsedUrlQuery;
    /**
     * The params after resolving routes
     */
    params?: ParsedUrlQuery;
    /**
     * ErrorOverlay component to use in development for pages router
     */
    PagesErrorDebug?: PagesDevOverlayBridgeType;
    /**
     * Whether server is in minimal mode (this will be replaced with more
     * specific flags in future)
     */
    minimalMode?: boolean;
    /**
     * DEV only: The fallback params that should be used when validating prerenders during dev
     */
    devFallbackParams?: OpaqueFallbackRouteParams;
    /**
     * DEV only: Request timings in process.hrtime.bigint()
     */
    devRequestTimingStart?: bigint;
    devRequestTimingMiddlewareStart?: bigint;
    devRequestTimingMiddlewareEnd?: bigint;
    devRequestTimingInternalsEnd?: bigint;
    /**
     * DEV only: The duration of getStaticPaths/generateStaticParams in process.hrtime.bigint()
     */
    devGenerateStaticParamsDuration?: bigint;
}
/**
 * Gets the request metadata. If no key is provided, the entire metadata object
 * is returned.
 *
 * @param req the request to get the metadata from
 * @param key the key to get from the metadata (optional)
 * @returns the value for the key or the entire metadata object
 */
export declare function getRequestMeta(req: NextIncomingMessage, key?: undefined): RequestMeta;
export declare function getRequestMeta<K extends keyof RequestMeta>(req: NextIncomingMessage, key: K): RequestMeta[K];
/**
 * Sets the request metadata.
 *
 * @param req the request to set the metadata on
 * @param meta the metadata to set
 * @returns the mutated request metadata
 */
export declare function setRequestMeta(req: NextIncomingMessage, meta: RequestMeta): RequestMeta;
/**
 * Adds a value to the request metadata.
 *
 * @param request the request to mutate
 * @param key the key to set
 * @param value the value to set
 * @returns the mutated request metadata
 */
export declare function addRequestMeta<K extends keyof RequestMeta>(request: NextIncomingMessage, key: K, value: RequestMeta[K]): RequestMeta;
/**
 * Removes a key from the request metadata.
 *
 * @param request the request to mutate
 * @param key the key to remove
 * @returns the mutated request metadata
 */
export declare function removeRequestMeta<K extends keyof RequestMeta>(request: NextIncomingMessage, key: K): RequestMeta;
type NextQueryMetadata = {
    /**
     * The `_rsc` query parameter used for cache busting to ensure that the RSC
     * requests do not get cached by the browser explicitly.
     */
    [NEXT_RSC_UNION_QUERY]?: string;
};
export type NextParsedUrlQuery = ParsedUrlQuery & NextQueryMetadata;
export interface NextUrlWithParsedQuery extends UrlWithParsedQuery {
    query: NextParsedUrlQuery;
}
export {};