Examine source code of Aspire

{
  "manifest_version": 2,
  "name": "AspireBot ver 2",
  "version": "2",
  "description": "Snipe the snipe",
  "icons": {
    "128": "logo.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.ea.com/*/fifa/ultimate-team/web-app/*",
        "https://www.ea.com/fifa/ultimate-team/web-app/*"
      ],
      "js": [
        "autobuyer.js",
        "autobuyermenu.js"
      ]
    }
  ]
}