import { type NextFetchEvent, type NextRequest } from "next/server";
import { type GeistdocsConfig } from "./config";
export type DetectionMethod = "ua-match" | "signature-agent" | "heuristic" | null;
export interface TrackMarkdownRequestEvent {
    acceptHeader: string | null;
    detectionMethod?: DetectionMethod;
    path: string;
    referer: string | null;
    requestType?: "md-url" | "header-negotiated" | "agent-rewrite";
    userAgent: string | null;
}
export interface GeistdocsProxyContext {
    context: NextFetchEvent;
    defaultLanguage: string;
    languages: string[];
    request: NextRequest;
}
type ProxyHookResult = Response | undefined | null;
export type GeistdocsProxyHook = (context: GeistdocsProxyContext) => Promise<ProxyHookResult> | ProxyHookResult;
export type GeistdocsRewriteTransform = (pathname: `/${string}`, context: GeistdocsProxyContext) => Promise<`/${string}`> | `/${string}`;
export interface GeistdocsMarkdownRoute {
    from: `/${string}`;
    to: `/${string}` | ((context: {
        defaultLanguage: string;
        language: string;
        path: string[];
        pathname: string;
    }) => `/${string}`);
}
export interface CreateProxyOptions {
    /** Prepend standalone Markdown mappings without replacing docs mappings. */
    additionalMarkdownRoutes?: GeistdocsMarkdownRoute[];
    after?: GeistdocsProxyHook | GeistdocsProxyHook[];
    before?: GeistdocsProxyHook | GeistdocsProxyHook[];
    config: Pick<GeistdocsConfig, "agent" | "basePath" | "content" | "defaultLanguage" | "translations">;
    /** Override automatic recovery for unmatched Markdown and detected-agent requests. */
    markdownNotFound?: boolean | ((context: {
        language: string;
        pathname: string;
    }) => boolean);
    markdownRoutes?: GeistdocsMarkdownRoute[];
    trackMarkdownRequest?: (event: TrackMarkdownRequestEvent) => Promise<void> | void;
    /** Transform Geistdocs' localized, app-local internal rewrite destination. */
    transformRewrite?: GeistdocsRewriteTransform;
}
export declare const createProxy: ({ additionalMarkdownRoutes, after, before, config, markdownNotFound, markdownRoutes, trackMarkdownRequest, transformRewrite, }: CreateProxyOptions) => (request: NextRequest, context: NextFetchEvent) => Promise<Response>;
export {};
//# sourceMappingURL=proxy.d.ts.map