Examine source code of XMR 2FA

{
  "manifest_version": 3,
  "name": "XMR 2FA",
  "version": "2.0",
  "description": "Simple, private, no-tracking browser 2FA authenticator",
  "homepage_url": "https://xmr2fa.com",
  "icons": {
    "128": "icon128.png",
    "256": "icon256.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "XMR 2FA"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d8f8e0e0-5e5e-4e5e-8e5e-5e5e5e5e5e5e}",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}