Improve regex detection

Fixes #249
Fixes #252
Fixes #253

Author: matthiasmullie

src/JS.php

@@ -238,7 +238,7 @@ protected function extractRegex()
         // closing the regex)
         // then also ignore bare `/` inside `[]`, where they don't need to be
         // escaped: anything inside `[]` can be ignored safely
-        $pattern = '\\/(?:[^\\[\\/\\\\\n\r]+|(?:\\\\.)+|(?:\\[(?:[^\\]\\\\\n\r]+|(?:\\\\.)+)+\\])+)++\\/[gimuy]*';
+        $pattern = '\\/(?!\*)(?:[^\\[\\/\\\\\n\r]++|(?:\\\\.)++|(?:\\[(?:[^\\]\\\\\n\r]++|(?:\\\\.)++)++\\])++)++\\/[gimuy]*';
 
         // a regular expression can only be followed by a few operators or some
         // of the RegExp methods (a `\` followed by a variable or value is