diff --git a/packages/bitcore-wallet-service/package-lock.json b/packages/bitcore-wallet-service/package-lock.json
index bd53d2988fc..86270eda885 100644
--- a/packages/bitcore-wallet-service/package-lock.json
+++ b/packages/bitcore-wallet-service/package-lock.json
@@ -950,9 +950,9 @@
       }
     },
     "errr": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/errr/-/errr-2.2.1.tgz",
-      "integrity": "sha1-H+eLb7KS0mXGJcBqfsmjsy4blt8="
+      "version": "2.6.1",
+      "resolved": "https://registry.npmjs.org/errr/-/errr-2.6.1.tgz",
+      "integrity": "sha512-h4SrH28BniB6zOZ/19ZOHdonCwLI7ljC8MyDabH+6dhz66Ws+Xy0MnHwf4dn55FRdZWdVVpbrSpI5YYOscV29A=="
     },
     "es6-promise": {
       "version": "3.2.1",
@@ -1968,19 +1968,12 @@
       "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns="
     },
     "preconditions": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/preconditions/-/preconditions-2.2.1.tgz",
-      "integrity": "sha1-o9JeRQoOrzLcb2tAEob5VWN4Ts4=",
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/preconditions/-/preconditions-2.2.3.tgz",
+      "integrity": "sha512-Yjr1+XK/4/L0zJyhNdsD2VNJIvd6ErFVJqXQ6mxRg+yvjfiNgLJ2uTeRXlmGuZ8AlcMFxkkKZZlckydHZe6AwA==",
       "requires": {
-        "errr": "2.2.1",
-        "lodash": "4.17.5"
-      },
-      "dependencies": {
-        "lodash": {
-          "version": "4.17.5",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.5.tgz",
-          "integrity": "sha512-svL3uiZf1RwhH+cWrfZn3A4+U58wbP0tGVTLQPbjplZxZ8ROD9VLuNgsRniTlLe7OlSqR79RUehXgpBW/s0IQw=="
-        }
+        "errr": "2.6.1",
+        "lodash": "4.17.11"
       }
     },
     "prelude-ls": {
diff --git a/packages/bitcore-wallet-service/package.json b/packages/bitcore-wallet-service/package.json
index a15f702f9c1..5a1f3cb5b46 100644
--- a/packages/bitcore-wallet-service/package.json
+++ b/packages/bitcore-wallet-service/package.json
@@ -37,7 +37,7 @@
     "morgan": "^1.9.1",
     "mustache": "^2.1.0",
     "npmlog": "^0.1.1",
-    "preconditions": "^2.2.1",
+    "preconditions": "^2.2.3",
     "read": "^1.0.5",
     "request": "^2.53.0",
     "request-promise-native": "^1.0.5",
diff --git a/packages/bitcore-wallet-service/src/lib/errors/clienterror.ts b/packages/bitcore-wallet-service/src/lib/errors/clienterror.ts
index 0c76150ce7d..ef17553df9c 100644
--- a/packages/bitcore-wallet-service/src/lib/errors/clienterror.ts
+++ b/packages/bitcore-wallet-service/src/lib/errors/clienterror.ts
@@ -1,9 +1,10 @@
 'use strict';
 
-export class ClientError {
+export class ClientError extends Error {
   code: string;
   message: string;
   constructor(...args) {
+    super()
     switch (args.length) {
       case 0:
         this.code = 'BADREQUEST';
diff --git a/packages/bitcore-wallet-service/src/lib/server.ts b/packages/bitcore-wallet-service/src/lib/server.ts
index 79c800afbc1..f61de1fbb2d 100644
--- a/packages/bitcore-wallet-service/src/lib/server.ts
+++ b/packages/bitcore-wallet-service/src/lib/server.ts
@@ -1,13 +1,14 @@
+import { ClientError } from "./errors/clienterror";
 import { IWallet } from './model/wallet';
 'use strict';
 
 import * as _ from 'lodash';
-import * as $ from 'preconditions';
 import * as async from 'async';
 import * as log from 'npmlog';
 import { ITxProposal, TxProposal } from './model/txproposal';
 import { Storage } from './storage';
 import { INotification } from './model/notification';
+const $ = require('preconditions').singleton();
 var serverMessages = require('../serverMessages');
 var BCHAddressTranslator = require('./bchaddresstranslator');
 
@@ -28,7 +29,6 @@ var Utils = Common.Utils;
 var Constants = Common.Constants;
 var Defaults = Common.Defaults;
 
-var ClientError = require('./errors/clienterror');
 var Errors = require('./errors/errordefinitions');
 
 var Lock = require('./lock');
diff --git a/packages/bitcore-wallet-service/src/lib/storage.ts b/packages/bitcore-wallet-service/src/lib/storage.ts
index 3e0b2be2ac7..d756c9501f1 100644
--- a/packages/bitcore-wallet-service/src/lib/storage.ts
+++ b/packages/bitcore-wallet-service/src/lib/storage.ts
@@ -1571,5 +1571,3 @@ export class Storage {
     );
   }
 }
-
-module.exports = Storage;
diff --git a/packages/bitcore-wallet-service/src/messagebroker/messagebroker.js b/packages/bitcore-wallet-service/src/messagebroker/messagebroker.ts
similarity index 85%
rename from packages/bitcore-wallet-service/src/messagebroker/messagebroker.js
rename to packages/bitcore-wallet-service/src/messagebroker/messagebroker.ts
index d48dc637b5e..080149efe26 100644
--- a/packages/bitcore-wallet-service/src/messagebroker/messagebroker.js
+++ b/packages/bitcore-wallet-service/src/messagebroker/messagebroker.ts
@@ -2,8 +2,8 @@
 
 'use strict';
 
+import io = require('socket.io');
 var $ = require('preconditions').singleton();
-var io = require('socket.io');
 var log = require('npmlog');
 log.debug = log.verbose;
 
@@ -13,7 +13,7 @@ var opts = {
   port: parseInt(process.argv[2]) || DEFAULT_PORT,
 };
 
-var server = io(opts.port);
+var server = io(opts.port.toString());
 server.on('connection', function(socket) {
   socket.on('msg', function(data) {
     server.emit('msg', data);
diff --git a/packages/bitcore-wallet-service/start.sh b/packages/bitcore-wallet-service/start.sh
index ea7afb7ceff..8cd13fd0a0d 100755
--- a/packages/bitcore-wallet-service/start.sh
+++ b/packages/bitcore-wallet-service/start.sh
@@ -29,10 +29,10 @@ run_program ()
   fi
 }
 
-run_program messagebroker/messagebroker.js pids/messagebroker.pid logs/messagebroker.log
-run_program bcmonitor/bcmonitor.js pids/bcmonitor.pid logs/bcmonitor.log
-run_program emailservice/emailservice.js pids/emailservice.pid logs/emailservice.log
-run_program pushnotificationsservice/pushnotificationsservice.js pids/pushnotificationsservice.pid logs/pushnotificationsservice.log
-run_program fiatrateservice/fiatrateservice.js pids/fiatrateservice.pid logs/fiatrateservice.log
-run_program bws.js pids/bws.pid logs/bws.log
+run_program ./ts_build/messagebroker/messagebroker.js pids/messagebroker.pid logs/messagebroker.log
+run_program ./ts_build/bcmonitor/bcmonitor.js pids/bcmonitor.pid logs/bcmonitor.log
+run_program ./ts_build/emailservice/emailservice.js pids/emailservice.pid logs/emailservice.log
+run_program ./ts_build/pushnotificationsservice/pushnotificationsservice.js pids/pushnotificationsservice.pid logs/pushnotificationsservice.log
+run_program ./ts_build/fiatrateservice/fiatrateservice.js pids/fiatrateservice.pid logs/fiatrateservice.log
+run_program ./ts_build/bws.js pids/bws.pid logs/bws.log