Examine source code of Mercado Libre USDT

{
  "manifest_version": 3,
  "name": "Mercado Libre",
  "description": "Precio mercadolibre en dolares.",
  "version": "1.1",
  "action": {
    "default_popup": "popup.html",
    "default_icon": "./icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.mercadolibre.com.ar/*"
      ],
      "js": [
        "contentScript.js",
        "product.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://listado.mercadolibre.com.ar/*"
      ],
      "js": [
        "list.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{123e4567-e89b-12d3-a456-426655440000}"
    }
  }
}