install nyc

package.json

@@ -44,10 +44,10 @@
     "async": "^2.5.0",
     "babel-core": "^6.25.0",
     "babel-loader": "^7.1.1",
-    "babel-polyfill": "^6.23.0",
     "babel-plugin-transform-es3-member-expression-literals": "^6.22.0",
     "babel-plugin-transform-es3-property-literals": "^6.22.0",
     "babel-plugin-transform-runtime": "^6.23.0",
+    "babel-polyfill": "^6.23.0",
     "babel-preset-es2015": "^6.24.1",
     "babel-runtime": "^6.23.0",
     "babelify": "^7.3.0",
@@ -55,9 +55,9 @@
     "clean-css": "^4.1.7",
     "eslint": "^4.3.0",
     "gulp": "^3.9.1",
-    "gulp-eslint": "^4.0.0",
     "gulp-clean-css": "^3.7.0",
     "gulp-concat": "^2.6.1",
+    "gulp-eslint": "^4.0.0",
     "gulp-rename": "^1.2.2",
     "gulp-util": "^3.0.8",
     "jsdom": "9.12.0",
@@ -65,6 +65,7 @@
     "merge-stream": "^1.0.1",
     "mocha": "^3.4.2",
     "mocha-jsdom": "^1.1.0",
+    "nyc": "^11.2.1",
     "rimraf": "^2.6.1",
     "test-console": "^1.0.0",
     "uglify-js": "^2.8.29",