Issue 5079 - Turn elemHideEmulation into a CommonJS module

lib/content/elemHideEmulation.js

Index: lib/content/elemHideEmulation.js
===================================================================
rename from chrome/content/elemHideEmulation.js
rename to lib/content/elemHideEmulation.js
--- a/chrome/content/elemHideEmulation.js
+++ b/lib/content/elemHideEmulation.js
@@ -10,19 +10,19 @@
  * 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/>.
  */
 
-/* globals filterToRegExp */
+"use strict";
 
-"use strict";
+const {filterToRegExp} = require("common");
 
 const MIN_INVOCATION_INTERVAL = 3000;
 const abpSelectorRegexp = /:-abp-([\w-]+)\(/i;
 
 function splitSelector(selector)
 {
   if (selector.indexOf(",") == -1)
     return [selector];
@@ -519,8 +519,11 @@
       {
         let {document} = this.window;
         this.addSelectors();
         document.addEventListener("load", this.onLoad.bind(this), true);
       }
     });
   }
 };
+
+exports.ElemHideEmulation = ElemHideEmulation;
+exports.splitSelector = splitSelector;