Adhere to all-caps constants and remove constants which get mutated

shared/util/formatUtil.js

@@ -1,18 +1,18 @@
 'use strict';
 let moment = require('moment');
 
-var FormatUtil = {
+const FORMAT_UTIL = {
   minToHumanReadable: min => {
     return moment.duration(min * 60 * 1000).humanize();
   },
 
   parsePeers: (string) => {
-    var markerPosition = string.indexOf('@!@');
+    let markerPosition = string.indexOf('@!@');
     return string.substr(0, markerPosition);
   },
 
   status: (isHashChecking, isComplete, isOpen, uploadRate, downloadRate, state, message) => {
-    var torrentStatus = [];
+    let torrentStatus = [];
 
     if (isHashChecking === '1') {
       torrentStatus.push('ch'); // checking
@@ -44,4 +44,4 @@ var FormatUtil = {
   }
 }
 
-module.exports = FormatUtil;
+module.exports = FORMAT_UTIL;

shared/util/objectUtil.js

@@ -1,6 +1,6 @@
 'use strict';
 
-let objectUtil = {
+const OBJECT_UTIL = {
   reflect: (hash) => {
     return Object.keys(hash).reduce((memo, key) => {
       memo[key] = hash[key];
@@ -10,4 +10,4 @@ let objectUtil = {
   }
 }
 
-module.exports = objectUtil;
+module.exports = OBJECT_UTIL;

shared/util/regEx.js

@@ -1,8 +1,8 @@
 'use strict';
 
-const regEx = {
+const REG_EX = {
   url: /^(?:https?|ftp):\/\/.{1,}\.{1}.{1,}/,
   domainName: /https?:\/\/(?:www\.)?([-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,18}\b)*(\/[\/\d\w\.-]*)*(?:[\?])*(.+)*/i
 };
 
-module.exports = regEx;
+module.exports = REG_EX;

shared/util/stringUtil.js

@@ -1,6 +1,6 @@
 'use strict';
 
-let stringUtil = {
+const STRING_UTIL = {
   capitalize: (string) => {
     return string.charAt(0).toUpperCase() + string.slice(1);
   },
@@ -18,4 +18,4 @@ let stringUtil = {
   }
 }
 
-module.exports = stringUtil;
+module.exports = STRING_UTIL;