Examine source code of iRacing Enhanced Profile

{
  "manifest_version": 2,
  "name": "iRacing Enhanced Profile",
  "version": "1.9",
  "description": "Presents enhanced stats for the iRacing service.",
  "permissions": [
    "activeTab"
  ],
  "icons": {
    "128": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://members.iracing.com/membersite/member/CareerStats.do*"
      ],
      "js": [
        "jquery-3.4.1.js",
        "getStats.js"
      ]
    },
    {
      "matches": [
        "*://members.iracing.com/membersite/member/EventResult.do*"
      ],
      "js": [
        "jquery-3.4.1.js",
        "results.js"
      ]
    }
  ]
}