From 30bc87c1dac3a2d370d2cbacdc2c241fcdfef40c Mon Sep 17 00:00:00 2001
From: Leon Feng <leon@lisiumi.com>
Date: Tue, 31 Jan 2017 05:30:23 +0400
Subject: [PATCH] Disable loopProtect for non-JavaScript code

---
 client/rechallenge/transformers.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/client/rechallenge/transformers.js b/client/rechallenge/transformers.js
index bf2f4741d24..bb9938a01e3 100644
--- a/client/rechallenge/transformers.js
+++ b/client/rechallenge/transformers.js
@@ -24,6 +24,11 @@ const transformersForHtmlJS = {
     {
       name: 'add-loop-protect',
       transformer: function addLoopProtect(file) {
+        const _contents = file.contents.toLowerCase();
+        if (file.ext === 'html' && !_contents.includes('<script>')) {
+          // No JavaScript in user code, so no need for loopProtect
+          return updateContents(file.contents, file);
+        }
         return updateContents(loopProtect(file.contents), file);
       }
     },