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manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Default Notifications",
  "version": "8",
  "description": "Adds some common pages to the allowed extensions list.",
  "options_page": "options.html",
  "permissions": [
    "contentSettings",
    "storage"
  ],
  "icons": {
    "128": "icon128.png"
  },
  "background": {
    "service_worker": "worker.js",
    "type": "module"
  }
}