yarn add express && yarn add nodemon --dev

Author: hoatle

package.json

@@ -7,5 +7,11 @@
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "author": "Teracy",
-  "license": "MIT"
+  "license": "MIT",
+  "dependencies": {
+    "express": "^4.15.3"
+  },
+  "devDependencies": {
+    "nodemon": "^1.11.0"
+  }
 }