package.json.diff

 {
   "name": "react-emails-example",
   "version": "0.1.0",
   "private": true,
+  "main": "./server/createEmail.js",
   "devDependencies": {
+    "babel-cli": "^6.24.1",
+    "babel-preset-react-app": "^2.2.0",
     "react-scripts": "0.9.5"
   },
   "dependencies": {
     "react": "^15.5.4",
     "react-dom": "^15.5.4"
   },
   "scripts": {
+    "install": "babel src --out-dir lib --presets=react-app",
-    "build": "react-scripts build",
+    "build": "babel src --out-dir lib --presets=react-app",
     "start": "react-scripts start",
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject"
   }
 }