package.json

{
  "name": "react-app",
  "version": "1.0.0",
  "description": "",
  "private": true,
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "webpack --mode development & webpack-dev-server"
  },
  "author": "",
  "license": "ISC",
  "babel": {
    "presets": [
      "@babel/preset-env",
      "@babel/preset-react"
    ],
    "plugins": [
      "@babel/plugin-proposal-optional-chaining"
    ]
  },
  "devDependencies": {
    "@babel/core": "7.4.0",
    "@babel/plugin-proposal-optional-chaining": "7.2.0",
    "@babel/preset-env": "7.4.1",
    "@babel/preset-react": "7.0.0",
    "babel-loader": "8.0.5",
    "css-loader": "2.1.1",
    "mini-css-extract-plugin": "0.5.0",
    "node-sass": "4.12.0",
    "sass-loader": "7.1.0",
    "webpack": "4.29.6",
    "webpack-cli": "3.3.0",
    "webpack-dev-server": "3.2.1"
  },
  "dependencies": {
    "react": "16.8.4",
    "react-dom": "16.8.4",
    "react-router-dom": "5.0.0"
  }
}