diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 0000000..4335daa
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,20 @@
+ module.exports = {
+
+     "extends": "eslint:recommended",
+
+     "rules": {
+             "no-console": "off",
+             "no-unused-vars": ["error" ,{ "vars": "all", "args": "none" }],
+              "no-undef": 'error'
+                           },
+     "env": {
+               "es6": true,
+               "node": true
+                         },
+
+     "parserOptions": {
+             "ecmaVersion": 6
+                     }
+
+ };
+
diff --git a/main.js b/main.js
index b82becb..c94de67 100644
--- a/main.js
+++ b/main.js
@@ -12,8 +12,8 @@
 //    See the License for the specific language governing permissions and
 //    limitations under the License.
 
-var sys = require('util')
-  , fs = require('fs')
+
+  var fs = require('fs')
   , path = require('path')
   , events = require('events')
   ;
diff --git a/package.json b/package.json
index 833a558..c734a8b 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,8 @@
   "scripts": {
     "release:major": "bash scripts/release.sh major",
     "release:minor": "bash scripts/release.sh minor",
-    "release:patch": "bash scripts/release.sh patch"
+    "release:patch": "bash scripts/release.sh patch",
+    "lint": "eslint ."
   },
   "keywords": [
     "util",
@@ -36,5 +37,8 @@
   "dependencies": {
     "exec-sh": "^0.2.0",
     "minimist": "^1.2.0"
+  },
+  "devDependencies": {
+    "eslint": "4.18.2"
   }
 }
diff --git a/test/test_monitorRootDirectory.js b/test/test_monitorRootDirectory.js
index e3df595..78279a8 100644
--- a/test/test_monitorRootDirectory.js
+++ b/test/test_monitorRootDirectory.js
@@ -1,7 +1,7 @@
-var fs, watch, watch_original;
+var  watch, watch_original;
 watch = require('../main');
 watch_original = require('watch');
-fs = require('fs');
+
 
 watch.createMonitor(__dirname, function (monitor) {
     monitor.on("created", function (f, stat) {
@@ -25,4 +25,4 @@ watch_original.createMonitor(__dirname, function (monitor) {
     monitor.on("removed", function (f, stat) {
         console.log("ORIGINAL: " + f + " removed");
     });
-});
\ No newline at end of file
+});
diff --git a/test/test_watchTree.js b/test/test_watchTree.js
index 727b22d..404e7b8 100644
--- a/test/test_watchTree.js
+++ b/test/test_watchTree.js
@@ -1,5 +1,4 @@
-var fs = require('fs')
-  , watch = require('../main')
+var watch = require('../main')
   , assert = require('assert')
   ;