{
  "name": "javascript",
  "version": "0.1.0",
  "private": true,
  "devDependencies": {
    "react-scripts": "0.8.5"
  },
  "dependencies": {
    "babel-polyfill": "^6.20.0",
    "immutable": "^3.8.1",
    "react": "^15.4.2",
    "react-dom": "^15.4.2",
    "react-redux": "^5.0.2",
    "react-router": "^3.0.2",
    "react-router-redux": "^4.0.7",
    "rebass": "^0.3.3",
    "redux": "^3.6.0",
    "redux-saga": "^0.14.3",
    "redux-saga-router": "^1.1.0",
    "reflexbox": "^2.2.3",
    "sockjs-client": "latest",
    "webstomp-client": "^1.0.3"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "proxy": "ws://localhost:8080"
}

{
  "name": "javascript",
  "version": "0.1.0",
  "private": true,
  "devDependencies": {
    "react-scripts": "0.8.5",
    "babel-polyfill": "^6.20.0"
  },
  "dependencies": {
    "immutable": "^3.8.1",
    "react": "^15.4.2",
    "react-dom": "^15.4.2",
    "react-redux": "^5.0.2",
    "react-router": "^3.0.2",
    "react-router-redux": "^4.0.7",
    "rebass": "^0.3.3",
    "redux": "^3.6.0",
    "redux-saga": "^0.14.3",
    "redux-saga-router": "^1.1.0",
    "reflexbox": "^2.2.3",
    "sockjs-client": "latest",
    "webstomp-client": "^1.0.3"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "proxy": "ws://localhost:8080"
}

Move babel polyfill to dev dependencies
Move babel polyfill to dev dependencies
