From d571b235c0c079ef971965a5a540eec5d68b531c Mon Sep 17 00:00:00 2001
From: Josh Goebel <me@joshgoebel.com>
Date: Wed, 18 Nov 2020 11:43:55 -0500
Subject: [PATCH] add warning

---
 src/highlight.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/highlight.js b/src/highlight.js
index ddc1eba27e..94c2e6ad10 100644
--- a/src/highlight.js
+++ b/src/highlight.js
@@ -28,6 +28,11 @@ https://highlightjs.org/
   }
 
 }(function(hljs) {
+
+  var warn = console.warn || console.log;
+  warn("Verion 9 of Highlight.js has reached EOL and is no longer supported. Please upgrade to version 10.");
+
+
   // Convenience variables for build-in objects
   var ArrayProto = [],
       objectKeys = Object.keys;