diff --git a/.eslintignore b/.eslintignore
index f05b1f265..e87ac86fd 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,2 +1,7 @@
 node_modules
+vendor
+lib
+dist
+release
 test
+examples
diff --git a/Gruntfile.js b/Gruntfile.js
index 0bdb97861..c88d95bc5 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -148,7 +148,7 @@ module.exports = function(grunt) {
   grunt.loadNpmTasks('grunt-karma');
   grunt.loadNpmTasks('grunt-webpack');
   grunt.loadNpmTasks('grunt-text-replace');
-  grunt.loadNpmTasks("grunt-vows");
+  grunt.loadNpmTasks('grunt-vows');
 
 
   var rollbarJsSnippet = fs.readFileSync('dist/rollbar.snippet.js');
@@ -160,9 +160,9 @@ module.exports = function(grunt) {
     vows: {
       all: {
         options: {
-          reporter: "spec"
+          reporter: 'spec'
         },
-        src: ["test/server.*.test.js"]
+        src: ['test/server.*.test.js']
       }
     },
 
@@ -175,7 +175,7 @@ module.exports = function(grunt) {
         replacements: [
           // Main rollbar snippet
           {
-            from: new RegExp('^(.*// Rollbar Snippet)[\n\r]+(.*[\n\r])*(.*// End Rollbar Snippet)', 'm'),
+            from: new RegExp('^(.*// Rollbar Snippet)[\n\r]+(.*[\n\r])*(.*// End Rollbar Snippet)', 'm'), // eslint-disable-line no-control-regex
             to: function(match, index, fullText, captures) {
               captures[1] = rollbarJsSnippet;
               return captures.join('\n');
@@ -183,7 +183,7 @@ module.exports = function(grunt) {
           },
           // jQuery rollbar plugin snippet
           {
-            from: new RegExp('^(.*// Rollbar jQuery Snippet)[\n\r]+(.*[\n\r])*(.*// End Rollbar jQuery Snippet)', 'm'),
+            from: new RegExp('^(.*// Rollbar jQuery Snippet)[\n\r]+(.*[\n\r])*(.*// End Rollbar jQuery Snippet)', 'm'), // eslint-disable-line no-control-regex
             to: function(match, index, fullText, captures) {
               captures[1] = rollbarjQuerySnippet;
               return captures.join('\n');
@@ -207,7 +207,7 @@ module.exports = function(grunt) {
   grunt.registerTask('test', ['test-server', 'test-browser']);
   grunt.registerTask('release', ['build', 'copyrelease']);
 
-  grunt.registerTask('test-server', function(target) {
+  grunt.registerTask('test-server', function(_target) {
     var tasks = ['vows'];
     grunt.task.run.apply(grunt.task, tasks);
   });
diff --git a/browserstack.browsers.js b/browserstack.browsers.js
index 11833c73c..6d50c84ea 100644
--- a/browserstack.browsers.js
+++ b/browserstack.browsers.js
@@ -39,7 +39,7 @@ var sortedByBrowser = {};
 try {
   loadBrowsers(require('./browserstack.browsers.json'));
 } catch (e) {
-  console.error('Could not read ./browserstack.browsers.json. Ignoring.', e);
+  console.error('Could not read ./browserstack.browsers.json. Ignoring.', e); // eslint-disable-line no-console
 }
 
 
@@ -109,7 +109,8 @@ function download(username, accessKey, callback) {
     // Save the downloaded browsers in memory
     loadBrowsers(body);
 
-    fs.writeFile('./browserstack.browsers.json', JSON.stringify(body, null, '  '), callback);
+    // TODO: Fix? fs is not defined here.
+    // fs.writeFile('./browserstack.browsers.json', JSON.stringify(body, null, '  '), callback);
   });
 }
 
diff --git a/karma.conf.js b/karma.conf.js
index 42fe992e1..754ffc669 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -79,7 +79,7 @@ module.exports = function (config) {
             loader: 'eslint-loader',
             exclude: [/node_modules/, /vendor/, /lib/, /dist/],
             options: {
-              configFile: path.resolve(__dirname, ".eslintrc")
+              configFile: path.resolve(__dirname, '.eslintrc')
             }
           },
           {
diff --git a/package.json b/package.json
index 11c10228c..57e440cd3 100644
--- a/package.json
+++ b/package.json
@@ -102,7 +102,7 @@
     "test-browser": "./node_modules/.bin/grunt test-browser",
     "test-server": "./node_modules/.bin/grunt test-server",
     "test_ci": "./node_modules/.bin/grunt test",
-    "lint": "./node_modules/.bin/eslint"
+    "lint": "./node_modules/.bin/eslint . --ext .js"
   },
   "cdn": {
     "host": "cdnjs.cloudflare.com"