2 files changed, 6 insertions, 7 deletions
diff --git a/hesla.es b/hesla.es
index 6545537..5db02e6 100644
--- a/hesla.es
+++ b/hesla.es
@@ -1,15 +1,14 @@
 import {ActivePage} from "activePage";
 
 if (!Date.prototype.toISODateString) {
-  (function() {
+  Date.prototype.toISODateString = function() {
     function pad(n) {
       return n < 10 ? '0' + n : n;
     }
-    Date.prototype.toISODateString = function() {
-      return this.getFullYear() + '-' + pad(this.getMonth() + 1) +
-        '-' + pad(this.getDate());
-    };
-  }());
+
+    return this.getFullYear() + '-' + pad(this.getMonth() + 1) +
+      '-' + pad(this.getDate());
+  };
 }
 
 export class Hesla extends ActivePage {
diff --git a/sworker.js b/sworker.js
index 4d84107..7b64985 100644
--- a/sworker.js
+++ b/sworker.js
@@ -1,4 +1,4 @@
-var version = 'v38 - 2017-12-31';
+var version = 'v39 - 2017-01-07';
 var toCache = [
   '/',
   'index.html',