Examine source code of BookingFor Gestione

{
  "name": "BookingFor Gestione",
  "description": "Estensione necessaria per poter gestire facilmente le stampanti fiscali EPSON e Custom 3° gen. con BookingFor.",
  "version": "1.0.0.1",
  "manifest_version": 3,
  "action": {
    "default_popup": "src/popup/index.html"
  },
  "background": {
    "scripts": [
      "service-worker-loader.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "js": [
        "assets/index.ts-loader-IV6S9K8P.js"
      ],
      "all_frames": true,
      "matches": [
        "http://localhost/*",
        "http://127.0.0.1/*",
        "https://*.bookingfor.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "storage",
    "tabs",
    "activeTab"
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "*://*/*"
      ],
      "resources": [
        "src/content-script/index.ts"
      ]
    },
    {
      "matches": [
        "http://127.0.0.1/*",
        "http://localhost/*",
        "https://*.bookingfor.com/*"
      ],
      "resources": [
        "assets/index.ts-Ne4eMxYM.js"
      ]
    }
  ],
  "icons": {
    "16": "src/assets/bf-16x16.png",
    "24": "src/assets/bf-24x24.png",
    "32": "src/assets/bf-32x32.png",
    "128": "src/assets/bf-128x128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e9cad271-3802-4ed0-8e38-ec56ca195c4b}"
    }
  }
}