Examine source code of PUPSIS Schedule Exporter

{
  "manifest_version": 2,
  "name": "PUPSIS Schedule Exporter",
  "version": "4.0.1",
  "description": "A web extension for converting PUPSIS schedule to ICalendar format (.ics), CSV, and JSON file",
  "author": "Kevin Christian Amparado, Anthony John Hinay (Firefox), & contributors",
  "icons": {
    "128": "web-icons/web-icon.png"
  },
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://sis2.pup.edu.ph/student/schedule",
        "https://sis1.pup.edu.ph/student/schedule",
        "https://sis7.pup.edu.ph/student/schedule",
        "https://sis8.pup.edu.ph/student/schedule"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "browser_action": {
    "default_title": "PUPSIS Schedule Exporter",
    "default_popup": "popup.html",
    "default_icon": {
      "128": "web-icons/web-icon.png"
    }
  },
  "web_accessible_resources": [
    "web-icons/*",
    "css/*",
    "utils/*",
    "popup.html",
    "contentScript.js",
    "editSched.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{96d168d0-4f26-4782-a016-23d916b7a0aa}"
    }
  }
}