An example package.json for a Gutenberg block plugin

gutenberg-package.json

{
  "name": "ex6-events",
  "version": "1.0.0",
  "scripts": {
    "build": "cross-env BABEL_ENV=default NODE_ENV=production webpack",
    "dev": "cross-env BABEL_ENV=default webpack --watch"
  },
  "browserslist": [
    "extends @wordpress/browserslist-config"
  ],
  "dependencies": {
    "@wordpress/browserslist-config": "^2.1.0",
    "classnames": "^2.2.5"
  },
  "devDependencies": {
    "@wordpress/babel-preset-default": "^1.1.0",
    "autoprefixer": "^7.1.6",
    "babel-core": "^6.26.0",
    "babel-loader": "^7.1.2",
    "babel-plugin-transform-object-rest-spread": "^6.26.0",
    "babel-plugin-transform-react-jsx": "^6.24.1",
    "babel-plugin-transform-runtime": "^6.23.0",
    "cross-env": "^5.1.1",
    "extract-text-webpack-plugin": "^3.0.2",
    "node-sass": "^4.7.2",
    "postcss-loader": "^2.0.9",
    "raw-loader": "^0.5.1",
    "sass-loader": "^6.0.6",
    "webpack": "^3.8.1"
  }
}