Examine source code of FunPay Drafts

{
  "manifest_version": 2,
  "name": "FunPay Drafts",
  "version": "1.0",
  "description": "Сохраняет черновики сообщений в чате FunPay, как в Telegram",
  "icons": {
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "*://funpay.com/chat/*",
        "*://funpay.com/*/chat/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "funpay-drafts@extension",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}