Adding Eslint for a better code quality

.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
+                     }
+
+ };
+

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')
   ;

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"
   }
 }

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");
     });
-});
+});

test/test_watchTree.js

@@ -1,5 +1,4 @@
-var fs = require('fs')
-  , watch = require('../main')
+var watch = require('../main')
   , assert = require('assert')
   ;