Examine source code of aliPrecioTotal

{
  "description": "Este addon suma el precio de envío al precio del producto de forma automática en aliexpress",
  "manifest_version": 2,
  "name": "aliPrecioTotal",
  "version": "1.4",
  "icons": {
    "48": "icons/logo.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.aliexpress.com/*",
        "*://es.aliexpress.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3819db8b-f240-43e9-b320-821629407c76}"
    }
  }
}