| Index: lib/common.js | 
| =================================================================== | 
| --- a/lib/common.js | 
| +++ b/lib/common.js | 
| @@ -10,18 +10,17 @@ | 
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | 
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
| * GNU General Public License for more details. | 
| * | 
| * You should have received a copy of the GNU General Public License | 
| * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>. | 
| */ | 
|  | 
| -// We are currently limited to ECMAScript 5 in this file, because it is being | 
| -// used in the browser tests. See https://issues.adblockplus.org/ticket/4796 | 
| +"use strict"; | 
|  | 
| /** | 
| * Converts filter text into regular expression string | 
| * @param {string} text as in Filter() | 
| * @return {string} regular expression representation of filter text | 
| */ | 
| function filterToRegExp(text) | 
| { | 
|  |