From b5eeaa352c82ee9f15cc658bf56fab53a5bebec7 Mon Sep 17 00:00:00 2001
From: Neil Fraser <fraser@google.com>
Date: Sun, 4 Dec 2022 20:30:36 +0100
Subject: [PATCH] docs: Add notice to use unpkg instead of demos. (#6667)

Logs show about a dozen orgs actively using Blockly instances that are hot-linked to blockly-demo.appspot.com

These files disappeared on 25 November 2022, breaking a bunch of people.  This alert should point developers in the right direction.
---
 appengine/blockly_compressed.js | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 appengine/blockly_compressed.js

diff --git a/appengine/blockly_compressed.js b/appengine/blockly_compressed.js
new file mode 100644
index 000000000..dc118dfbe
--- /dev/null
+++ b/appengine/blockly_compressed.js
@@ -0,0 +1,11 @@
+// Added November 2022 after discovering that a number of orgs were hot-linking
+// their Blockly applications to https://blockly-demo.appspot.com/
+// Delete this file in early 2024.
+var msg = 'Compiled Blockly files should be loaded from https://unpkg.com/blockly/\n' +
+    'For help, contact https://groups.google.com/g/blockly';
+console.log(msg);
+try {
+  alert(msg);
+} catch (_e) {
+  // Can't alert?  Probably node.js.
+}