transform server.js into an es6 class

src/server.js

@@ -1,23 +1,20 @@
-var net = require('net')
+var net = require('net');
-  , EventEmitter = require('events').EventEmitter
+var EventEmitter = require('events').EventEmitter;
-  , util = require('util')
+var Client = require('./client');
-  , Client = require('./client')
+var states = require('./transforms/serializer').states;
-  , states = require('./transforms/serializer').states
-  ;
 
-module.exports = Server;
+class Server extends EventEmitter
-
+{
-function Server() {
+  constructor() {
-  EventEmitter.call(this);
+    super();
 
     this.socketServer = null;
     this.cipher = null;
     this.decipher = null;
     this.clients = {};
-}
+  }
-util.inherits(Server, EventEmitter);
 
-Server.prototype.listen = function(port, host) {
+  listen(port, host) {
     var self = this;
     var nextId = 0;
     self.socketServer = net.createServer();
@@ -51,9 +48,9 @@ Server.prototype.listen = function(port, host) {
       self.emit('listening');
     });
     self.socketServer.listen(port, host);
-};
+  }
 
-Server.prototype.close = function() {
+  close() {
     var client;
     for(var clientId in this.clients) {
       if(!this.clients.hasOwnProperty(clientId)) continue;
@@ -62,4 +59,7 @@ Server.prototype.close = function() {
       client.end('ServerShutdown');
     }
     this.socketServer.close();
-};
+  }
+}
+
+module.exports = Server;