Examine source code of X Top Auto Refresh

{
  "manifest_version": 3,
  "name": "X Top Auto Refresh",
  "version": "1.1.4",
  "description": "Automatically pulls new posts on X when you are at the top of the timeline.",
  "content_scripts": [
    {
      "matches": [
        "https://x.com/home*",
        "https://twitter.com/home*",
        "https://x.com/i/lists/*",
        "https://twitter.com/i/lists/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "x-top-auto-refresh@example.local",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}