diff --git a/lib/config/blockchain.js b/lib/config/blockchain.js
index 7b872691e..ca2e0f080 100644
--- a/lib/config/blockchain.js
+++ b/lib/config/blockchain.js
@@ -9,12 +9,12 @@ BlockchainConfig.prototype.loadConfigFile = function(filename) {
     throw new Error("error reading " + filename);
   }
   return this;
-}
+};
 
 BlockchainConfig.prototype.loadConfig = function(config) {
   this.blockchainConfig = config;
   return this;
-}
+};
 
 BlockchainConfig.prototype.config = function(env) {
   if (this.blockchainConfig === null) {
@@ -25,10 +25,10 @@ BlockchainConfig.prototype.config = function(env) {
 
   var networkId;
   if (config.network_id === undefined) {
-    networkId = Math.floor((Math.random() * 100000) + 1000)
+    networkId = Math.floor((Math.random() * 100000) + 1000);
   }
   else {
-    networkId = config.network_id
+    networkId = config.network_id;
   }
 
   config = {
@@ -47,7 +47,7 @@ BlockchainConfig.prototype.config = function(env) {
   }
 
   return config;
-}
+};
 
-module.exports = BlockchainConfig
+module.exports = BlockchainConfig;
 
diff --git a/lib/config/contracts.js b/lib/config/contracts.js
index db7a76a5a..4ec407b16 100644
--- a/lib/config/contracts.js
+++ b/lib/config/contracts.js
@@ -1,7 +1,5 @@
-indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };
 var readYaml = require('read-yaml');
 var fs = require('fs');
-var Blockchain = require('./blockchain.js');
 var toposort = require('toposort');
 
 ContractsConfig = function(blockchainConfig, web3) {
@@ -39,16 +37,16 @@ ContractsConfig.prototype.loadConfigFile = function(filename) {
     throw new Error("error reading " + filename);
   }
   return this;
-}
+};
 
 ContractsConfig.prototype.loadConfig = function(config) {
   this.contractConfig = config;
   return this;
-}
+};
 
 ContractsConfig.prototype.config = function(env) {
   return this.contractConfig[env];
-}
+};
 
 ContractsConfig.prototype.compileContracts = function(env) {
   var contractFile, source, j;
@@ -86,7 +84,7 @@ ContractsConfig.prototype.compileContracts = function(env) {
   }
 
   this.sortContracts();
-}
+};
 
 ContractsConfig.prototype.sortContracts = function() {
   var converted_dependencies = [], i;
@@ -105,7 +103,7 @@ ContractsConfig.prototype.sortContracts = function() {
     var order_b = orderedDependencies.indexOf(b);
     return order_a - order_b;
   });;
-}
+};
 
-module.exports = ContractsConfig
+module.exports = ContractsConfig;
 
diff --git a/lib/deploy.js b/lib/deploy.js
index b1d4cfa04..e29204835 100644
--- a/lib/deploy.js
+++ b/lib/deploy.js
@@ -17,14 +17,12 @@ Deploy = function(env, contractFiles, blockchainConfig, contractsConfig) {
     web3.setProvider(new web3.providers.HttpProvider("http://" + this.blockchainConfig.rpcHost + ":" + this.blockchainConfig.rpcPort));
     primaryAddress = web3.eth.coinbase;
     web3.eth.defaultAccount = primaryAddress;
-  } catch (_error) {
-    e = _error;
-    console.log("==== can't connect to " + this.blockchainConfig.rpcHost + ":" + this.blockchainConfig.rpcPort + " check if an ethereum node is running");
-    exit;
+  } catch (e) {
+    throw new Error("==== can't connect to " + this.blockchainConfig.rpcHost + ":" + this.blockchainConfig.rpcPort + " check if an ethereum node is running");
   }
 
   console.log("address is : " + primaryAddress);
-}
+};
 
 Deploy.prototype.deploy_contracts = function(env) {
   this.contractsManager.compileContracts(env);
@@ -70,7 +68,7 @@ Deploy.prototype.deploy_contracts = function(env) {
     console.log("deployed " + className + " at " + contractAddress);
   }
 
-}
+};
 
 Deploy.prototype.generate_abi_file = function() {
   var result;
@@ -90,12 +88,12 @@ Deploy.prototype.generate_abi_file = function() {
   }
 
   return result;
-}
+};
 
 Deploy.prototype.generate_and_write_abi_file = function(destFile) {
   var result = this.generate_abi_file();
   grunt.file.write(destFile, result);
-}
+};
 
-module.exports = Deploy
+module.exports = Deploy;
 
diff --git a/lib/test.js b/lib/test.js
index 36df868f3..b8ed4600a 100644
--- a/lib/test.js
+++ b/lib/test.js
@@ -1,13 +1,10 @@
 var python = require('python').shell;
-var web3 = require('web3');
-var fs = require('fs');
 var mm = require('methodmissing');
 var sync = require('sync-me');
-var grunt = require('grunt');
 
 py_exec = function(cmd) {
   return sync(python, cmd)[1].trim();
-}
+};
 
 TestContractWrapper = (function() {
   function TestContractWrapper(contract, className, args) {
@@ -18,28 +15,28 @@ TestContractWrapper = (function() {
   }
 
   TestContractWrapper.prototype.initializeContract = function() {
-    example_abi = JSON.stringify(this.contract.info.abiDefinition)
-    example_binary = this.contract.code.slice(2)
+    example_abi = JSON.stringify(this.contract.info.abiDefinition);
+    example_binary = this.contract.code.slice(2);
 
-    py_exec("example_abi = '" + example_abi + "'")
-    py_exec("example_abi")
-    py_exec("example_binary = '" + example_binary + "'.decode('hex')")
-    py_exec("example_binary")
+    py_exec("example_abi = '" + example_abi + "'");
+    py_exec("example_abi");
+    py_exec("example_binary = '" + example_binary + "'.decode('hex')");
+    py_exec("example_binary");
 
-    if (this.args == undefined) {
-      py_exec(this.className + "_contract = EvmContract(example_abi, example_binary, '" + this.className + "')")
+    if (this.args === undefined) {
+      py_exec(this.className + "_contract = EvmContract(example_abi, example_binary, '" + this.className + "')");
     }
     else {
-      py_exec(this.className + "_contract = EvmContract(example_abi, example_binary, '" + this.className + "', [" + this.args.join(",") + "])")
+      py_exec(this.className + "_contract = EvmContract(example_abi, example_binary, '" + this.className + "', [" + this.args.join(",") + "])");
     }
 
-    this.contractVariable = this.className + "_contract"
+    this.contractVariable = this.className + "_contract";
   };
 
   TestContractWrapper.prototype.execCmd = function(method, args) {
-    arg_list = [];
-    for (key in args) {
-      value = args[key];
+    var arg_list = [];
+    for (var key in args) {
+      var value = args[key];
       arg_list.push(value);
     }
 
@@ -68,8 +65,8 @@ test = function(contractsConfig, contractFiles) {
 
 test.prototype.request = function(className, args) {
   var contract = this.contractDB[className];
-  py_exec("from ethertdd import EvmContract")
-  return TestContract(contract, className, args)
+  py_exec("from ethertdd import EvmContract");
+  return TestContract(contract, className, args);
 }
 
 module.exports = test;