Fix CI tests

Author: ehmicky

package.json

@@ -8,8 +8,8 @@
     "!*~"
   ],
   "scripts": {
-    "test": "gulp test",
-    "ci-test": "nyc npm test && coveralls <coverage/lcov.info",
+    "test": "gulp build && gulp test",
+    "ci-test": "gulp build && nyc npm test && coveralls <coverage/lcov.info",
     "release": "release-it"
   },
   "description": "Log all process errors: uncaught exceptions, warnings and improperly handled promises",