1.4.0: not_found, server-only response options, compression

- Server functions can return not_found: true to render the 404 page
  with status 404.
- Page components and window.__PAGE_PROPS__ (and HMR updates) only get
  props, query, url and error. response_options, redirect, cache settings
  and res_transform stay on the server, so cookies and private headers no
  longer end up in the HTML. BunextPageProps is narrowed to match
  (breaking for code that read server-only fields from component props).
- response_options headers go through a Headers object, so repeated
  headers such as several Set-Cookie survive.
- Redirects: status_code wins over permanent; response_options headers
  and res_transform apply to redirects too.
- Gzip for compressible text responses; compress: false to turn it off.
- Files the router matches but never bundles (.server.ts, __root,
  excluded paths and directories) return 404 instead of looping through
  dev rebuild retries.
- Missing public files return 404 rather than 403, so dotted page paths
  like /users/john.doe fall through to pages again.
- importFresh detects rewrites within the filesystem's mtime granularity.
- README: self-hosted React (not esm.sh), snake_case option names, static
  file serving, cache headers, the new options.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

dist/functions/server/web-pages/grab-page-component.js

@@ -12,15 +12,11 @@ import grabDirNames from "../../../utils/grab-dir-names";
 import grabRelativePath from "../../../utils/grab-relative-path";
 import { logBuildErrorsOnce } from "../../../utils/build-error-log";
 import { RequestBodyTooLargeError } from "../../../utils/read-request-body";
-const { BUNX_BUNDLER_ERROR_EXIT_FILE, ROOT_DIR } = grabDirNames();
-class NotFoundError extends Error {
-    status = 404;
-    constructor(message) {
-        super(message);
-        this.name = "NotFoundError";
-    }
-}
+import NotFoundError from "../../../utils/not-found-error";
+import isRoutablePage from "../../../utils/is-routable-page";
+const { ROOT_DIR } = grabDirNames();
 export default async function grabPageComponent(params) {
+    const { BUNX_BUNDLER_ERROR_EXIT_FILE } = grabDirNames();
     const { req, file_path: passed_file_path, debug, return_server_res_only, skip_server_res, is_hydration, no_retry, } = params;
     const url = req?.url ? new URL(req.url) : undefined;
     const router = global.BUNEXT_ROUTER;
@@ -46,6 +42,12 @@ export default async function grabPageComponent(params) {
         if (!match?.filePath && url?.pathname) {
             throw new NotFoundError(`Page ${url.pathname} not found`);
         }
+        // The router also matches files that are never bundled (.server.ts
+        // companions, __root, excluded paths). Without this they would sit
+        // in the dev rebuild/retry loop and never respond.
+        if (match?.filePath && !isRoutablePage(match.filePath)) {
+            throw new NotFoundError(`Page ${url?.pathname} not found`);
+        }
         const file_path = match?.filePath || passed_file_path;
         if (debug) {
             log.info(`file_path:`, file_path);