Gist for my tutorial: Building a Gutenberg sidebar plugin Part 2: Adding structure and asset bundling https://vanaf1979.nl/building-a-gutenberg-sidebar-plugin-part-2-adding-structure-and-asset-bundling/

metagtags-package.json

{
  "name": "Metatags",
  "version": "1.0.0",
  "description": "Simple WordPress SEO plugin.",
  "author": "Vanaf1979.nl",
  "homepage": "https://github.com/vanaf1979/gb-plugin-tutorial",
  "license": "GPL-2.0",
  "main": "index.js",
  "scripts": {
    "dev": "NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "watch": "NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "production": "NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
  },
  "keywords": [
    "Seo",
    "Wordpress",
    "Plugin"
  ]
}