Setup React App - Organizing React Application Part 1

package.json

{
  "name": "react-application",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "webpack-dev-server --open --config webpack.dev.js",
    "build": "webpack --config webpack.prod.js"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "react": "^16.4.1",
    "react-dom": "^16.4.1"
  },
  "devDependencies": {
    "babel-core": "^6.26.3",
    "babel-loader": "^7.1.5",
    "babel-preset-env": "^1.7.0",
    "babel-preset-react": "^6.24.1",
    "clean-webpack-plugin": "^0.1.19",
    "html-webpack-plugin": "^3.2.0",
    "uglifyjs-webpack-plugin": "^1.2.7",
    "webpack": "^4.16.1",
    "webpack-cli": "^3.1.0",
    "webpack-dev-server": "^3.1.4",
    "webpack-merge": "^4.1.3"
  }
}