Examine source code of TT-Live Helper

{
  "browser_specific_settings": {
    "gecko": {
      "id": "{7b0142ee-8c51-4d03-92e8-566fe7a328fb}"
    }
  },
  "content_scripts": [
    {
      "css": [
        "main.css"
      ],
      "js": [
        "js/tooltip.js",
        "js/popup.js",
        "js/notes.js",
        "js/historie.js",
        "js/aufstellung.js"
      ],
      "matches": [
        "https://*.tischtennislive.de/*"
      ]
    }
  ],
  "description": "Helper for TT-Live",
  "icons": {
    "48": "/images/48.png",
    "128": "/images/128.png"
  },
  "manifest_version": 3,
  "name": "TT-Live Helper",
  "version": "1.0.7"
}