Examine source code of Kolnovel Toolkit

{
  "manifest_version": 2,
  "name": "Kolnovel Toolkit",
  "version": "1.3",
  "description": "اعدادات اضافية لموقع ملوك الروايات بالاضافة لبضعة مواقع اخرى",
  "web_accessible_resources": [
    "kolnovel/css/Fun.css",
    "/kolnovel/js/chapter.js",
    "/kolnovel/js/novelpage.js"
  ],
  "content_scripts": [
    {
      "run_at": "document_start",
      "css": [
        "/kolnovel/css/chapter.css"
      ],
      "js": [
        "/kolnovel/cotroller.js"
      ],
      "matches": [
        "*://*.kolnovel.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "Toolkit@kolnovel.com",
      "strict_min_version": "48.0"
    }
  }
}