Examine source code of Lovli

{
  "name": "Lovli",
  "description": "Make your URLs beautiful with Lovli, the lovable URL shortener",
  "version": "1.0.0",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "@lovli",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "assets/icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "assets/javascript/background.js"
    ],
    "type": "module"
  },
  "permissions": [
    "activeTab",
    "contextMenus"
  ],
  "icons": {
    "16": "assets/icons/icon-16.png",
    "32": "assets/icons/icon-32.png",
    "48": "assets/icons/icon-48.png",
    "128": "assets/icons/icon-128.png"
  }
}