Added multiplexer, update unban command.

commands/unban.js

 const errors = require('../errors.json');
+const multiplexer = require('../multiplexer/getuser');
 
 exports.run = async (client, message, args) => {
     if (!message.member.hasPermission('BAN_MEMBERS')) {
@@ -8,18 +9,6 @@ exports.run = async (client, message, args) => {
         return;
     };
 
-    function GetUser(user) {
-        if (user.length == 18) {
-            return user;
-        } else if (user.length == 22) {
-            return user.slice(3, 21);
-        } else if (user.length == 21) {
-            return user.slice(3, 20);
-        } else {
-            return user;
-        };
-    };
-
     const user = args[0]
     if (!user) {
         message.channel.send(errors.insufficient_args).catch(e => {
@@ -40,7 +29,7 @@ exports.run = async (client, message, args) => {
             });
             return;
         };
-        const ban = bans.find(b => b.user.id == GetUser(user));
+        const ban = bans.find(b => b.user.id == multiplexer.GetUser(user));
         if (!ban) {
             message.channel.send('Cannot find that user or that user is not banned.').catch(e => {
                 return;

multiplexer/getuser.js

+module.exports = {
+    GetUser: (user) => {
+        if (user.length == 18) {
+            return user;
+        } else if (user.length == 22) {
+            return user.slice(3, 21);
+        } else if (user.length == 21) {
+            return user.slice(3, 20);
+        } else {
+            return user;
+        };
+    }
+};
\ No newline at end of file