Examine source code of YouTube RSS Finder

{
  "manifest_version": 3,
  "name": "YouTube RSS Finder",
  "version": "1.0",
  "description": "Extracts the RSS feed URL from the current YouTube channel page.",
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Get YouTube RSS",
    "default_icon": "icon.svg"
  },
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@youtube_rss",
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": []
      }
    }
  }
}