Examine source code of Timezone Tracker

{
  "manifest_version": 3,
  "name": "Timezone Tracker",
  "version": "1.5.2",
  "description": "Manage and compare times across locations with intuitive search and interactive time slider.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "permissions": [
    "storage",
    "alarms",
    "notifications"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; style-src 'self' 'unsafe-inline'; font-src 'self'; img-src 'self' data:;"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "timezonetracker@timezonetracker.app",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}