From edc38de3fa42a5d9071fb9f6dcf70f70d39031cb Mon Sep 17 00:00:00 2001
From: Tim Fischbach <tfischbach@codevise.de>
Date: Tue, 14 Jul 2026 12:52:53 +0200
Subject: [PATCH] Fix server-side rendering of scrolled entries

Targeting modern browsers stopped core-js from polyfilling URL,
but the server-side rendering runtime (ExecJS) has no native URL,
so prerendering crashed with "URL is not defined". Provide it from
core-js-pure, which the browser-targeted transforms leave intact.

REDMINE-21330
---
 entry_types/scrolled/package/package.json           | 1 +
 entry_types/scrolled/package/src/frontend/server.js | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/entry_types/scrolled/package/package.json b/entry_types/scrolled/package/package.json
index 2a07241541..a8ed87d87e 100644
--- a/entry_types/scrolled/package/package.json
+++ b/entry_types/scrolled/package/package.json
@@ -12,6 +12,7 @@
     "@headlessui/react": "^1.6.6",
     "classnames": "^2.3.2",
     "core-js": "^3.6.5",
+    "core-js-pure": "^3.0.0",
     "debounce": "^1.2.0",
     "deep-assign": "^3.0.0",
     "intersection-observer": "^0.7.0",
diff --git a/entry_types/scrolled/package/src/frontend/server.js b/entry_types/scrolled/package/src/frontend/server.js
index 42654c53dc..16d45af810 100644
--- a/entry_types/scrolled/package/src/frontend/server.js
+++ b/entry_types/scrolled/package/src/frontend/server.js
@@ -1,11 +1,20 @@
 import 'core-js/stable';
 import 'core-js/features/typed-array/uint16-array';
+import URLPolyfill from 'core-js-pure/features/url';
 
 import React from 'react';
 import ReactRailsUJS from 'react_ujs';
 
 import {Root, setupI18n} from 'pageflow-scrolled/frontend';
 
+// The server-side rendering environment (ExecJS) lacks Web APIs like URL,
+// which `core-js/stable` no longer polyfills now that we target modern
+// browsers. Install it from core-js-pure (which the browser-targeted
+// transforms do not strip) so prerendering can use `new URL(...)`.
+if (typeof global.URL === 'undefined') {
+  global.URL = URLPolyfill;
+}
+
 ReactRailsUJS.getConstructor = function() {
   // Normally this function receives the name of a component, but we
   // only need to render one type of component.