import type { MiddlewareHandler } from "astro"; // PostHog reverse proxy — the browser SDK targets a build-randomized// first-party path and we forward to PostHog's ingest + asset hosts. Keeps// events flowing past adblockers that match *.posthog.com. See// https://posthog.com/docs/advanced/proxy/cloudflare const POSTHOG_INGEST_HOST = "us.i.posthog.com";const POSTHOG_ASSETS_HOST = "us-assets.i.posthog.com";const POSTHOG_PROXY_PATH = `/api/${(import.meta.env.PUBLIC_ANALYTICS_PATH ?? "a").replace(  /^\/+|\/+$/g,  "",)}`; export const onRequest: MiddlewareHandler = async (context, next) => {  const { pathname } = new URL(context.request.url);  if (pathname !== POSTHOG_PROXY_PATH && !pathname.startsWith(`${POSTHOG_PROXY_PATH}/`)) {    return next();  }   const url = new URL(context.request.url);  url.hostname = pathname.startsWith(`${POSTHOG_PROXY_PATH}/static/`)    ? POSTHOG_ASSETS_HOST    : POSTHOG_INGEST_HOST;  url.protocol = "https:";  url.port = "";  url.pathname = pathname.slice(POSTHOG_PROXY_PATH.length) || "/";   const upstream = new Request(url, context.request);  upstream.headers.delete("cookie");  return fetch(upstream);};