vercel__streamdown/apps/website/proxy.ts

import { isMarkdownPreferred, rewritePath } from "fumadocs-core/negotiation";
import { type NextRequest, NextResponse } from "next/server";

const { rewrite: rewriteLLM } = rewritePath("/docs/*path", "/llms.mdx/*path");

const proxy = (request: NextRequest) => {
  if (isMarkdownPreferred(request)) {
    const result = rewriteLLM(request.nextUrl.pathname);

    if (result) {
      return NextResponse.rewrite(new URL(result, request.nextUrl));
    }
  }

  return NextResponse.next();
};

export default proxy;