From bbbd05cab7260f7db9ffcb4adb2e19bdf661bca9 Mon Sep 17 00:00:00 2001
From: Johannes Ewald <johannes.ewald@peerigon.com>
Date: Tue, 28 Apr 2015 00:46:50 +0200
Subject: Fix issue where the strict mode was not detected when a comment was
 before "strict mode";

Fixes #54
---
 lib/detectStrictMode.js | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

(limited to 'lib')

diff --git a/lib/detectStrictMode.js b/lib/detectStrictMode.js
index 35f27fb..57dc14d 100644
--- a/lib/detectStrictMode.js
+++ b/lib/detectStrictMode.js
@@ -1,3 +1,7 @@
+var multiLineComment = /^\s*\/\*.*?\*\//;
+var singleLineComment = /^\s*\/\/.*?[\r\n]/;
+var strictMode = /^\s*(?:"use strict"|'use strict')[ \t]*(?:[\r\n]|;)/;
+
 /**
  * Returns true if the source code is intended to run in strict mode. Does not detect
  * "use strict" if it occurs in a nested function.
@@ -6,7 +10,19 @@
  * @return {Boolean}
  */
 function detectStrictMode(src) {
-    return (/^\s*(?:"use strict"|'use strict')[ \t]*(?:[\r\n]|;)/g).test(src);
+    var singleLine;
+    var multiLine;
+
+    while ((singleLine = singleLineComment.test(src)) || (multiLine = multiLineComment.test(src))) {
+        if (singleLine) {
+            src = src.replace(singleLineComment, "");
+        }
+        if (multiLine) {
+            src = src.replace(multiLineComment, "");
+        }
+    }
+
+    return strictMode.test(src);
 }
 
-module.exports = detectStrictMode;
\ No newline at end of file
+module.exports = detectStrictMode;
-- 
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