Examine source code of Telegram Web Tracker

{
  "manifest_version": 2,
  "name": "Telegram Web Tracker",
  "version": "0.1.0",
  "description": "Collect Telegram Web chat metadata and send it to local core.",
  "permissions": [
    "https://web.telegram.org/*",
    "http://127.0.0.1/*",
    "http://localhost/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://web.telegram.org/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "telegram-web-tracker-metricon@example.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "personalCommunications",
          "websiteContent",
          "browsingActivity"
        ]
      }
    }
  }
}