fix exports

website/common/script/libs/silver.js

@@ -4,11 +4,11 @@ Silver amount from their money
 
 // TODO move to client
 
-module.exports = function silver (num) {
+export default function silver (num) {
   if (num) {
     let centCount = Math.floor((num - Math.floor(num)) * 100);
     return `0${centCount}`.slice(-2);
   } else {
     return '00';
   }
-};
+}