diff --git a/xos/core/xoslib/karma.conf.js b/xos/core/xoslib/karma.conf.js
index e991fe3..12f47f7 100644
--- a/xos/core/xoslib/karma.conf.js
+++ b/xos/core/xoslib/karma.conf.js
@@ -24,7 +24,7 @@
       'static/js/vendor/backbone.syphon.js',
       'static/js/xoslib/*.js',
 
-      'spec/*.test.js'
+      'spec/**/*.test.js'
     ],
 
 
@@ -36,6 +36,7 @@
     // preprocess matching files before serving them to the browser
     // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
     preprocessors: {
+      'spec/**/*.test.js': ['babel']
     },
 
 
diff --git a/xos/core/xoslib/package.json b/xos/core/xoslib/package.json
index 795c17f..bcfc27e 100644
--- a/xos/core/xoslib/package.json
+++ b/xos/core/xoslib/package.json
@@ -14,6 +14,7 @@
     "karma-jasmine": "~0.3.6",
     "phantomjs": "~1.9.18",
     "karma-phantomjs-launcher": "~0.2.1",
-    "karma-mocha-reporter": "~1.1.1"
+    "karma-mocha-reporter": "~1.1.1",
+    "karma-babel-preprocessor": "~5.2.2"
   }
 }
diff --git a/xos/core/xoslib/spec/.eslintrc b/xos/core/xoslib/spec/.eslintrc
new file mode 100644
index 0000000..1fbd34e
--- /dev/null
+++ b/xos/core/xoslib/spec/.eslintrc
@@ -0,0 +1,46 @@
+{
+  "ecmaFeatures": {
+    "blockBindings": true,
+    "forOf" : true,
+    "generators": true,
+    "destructuring": true,
+    "forOf": true,
+    "arrowFunctions": true,
+    "templateStrings": true,
+    "destructuring": true,
+    "forOf": true,
+    "arrowFunctions": true,
+    "templateStrings": true,
+    "generators": true
+  },
+  "env" : {
+    "browser": true,
+    "node": true,
+    "es6": true
+  },
+  "rules" : {
+    "quotes": [1, "single"],
+    "camelcase": [0],
+    "no-underscore-dangle": [0],
+    "eqeqeq": [1],
+    "no-alert": [1],
+    "no-unused-vars": [1],
+    "key-spacing": [2, {
+        "beforeColon": false,
+        "afterColon": true
+    }],
+    "indent": [2, 2]
+  },
+  "globals": {
+    "console": false,
+    "describe": false,
+    "xdescribe": false,
+    "it": false,
+    "xit": false,
+    "before": false,
+    "beforeEach": false,
+    "after": false,
+    "afterEach": false,
+    "expect": false
+  }
+}
diff --git a/xos/core/xoslib/spec/smoke.test.js b/xos/core/xoslib/spec/smoke.test.js
index 99bbef3..2c27544 100644
--- a/xos/core/xoslib/spec/smoke.test.js
+++ b/xos/core/xoslib/spec/smoke.test.js
@@ -1,5 +1,7 @@
-describe('The test environment', function() {
-  it('should correctly work', function(){
+'use strict';
+
+describe('The test environment', () => {
+  it('should correctly work', () => {
     expect(true).toBe(true);
   });
-});
\ No newline at end of file
+});