add jsStandard

package.json

@@ -27,12 +27,13 @@
   },
   "devDependencies": {
     "mocha": "3.1.2",
-    "should": "11.1.1"
+    "should": "11.1.1",
+    "standard": "8.5.0"
   },
   "optionalDependencies": {},
   "main": "./parser",
   "scripts": {
-    "test": "mocha"
+    "test": "mocha && standard"
   },
   "maintainers": [
     {

test/test.js

@@ -25,6 +25,7 @@ describe('Tests', function () {
       })
 
       parser.on('error', function (err) {
+        should(err).not.be.ok()
         done(err)
       })