Examine source code of NJIT Catalog Checker

{
  "description": "Modifies the NJIT Catalog Pages to show if a course is offered or not in the current semester.",
  "manifest_version": 3,
  "name": "NJIT Catalog Checker",
  "version": "1.0.1.0",
  "homepage_url": "https://github.com/Bytestorm5/NJIT-CourseChecker",
  "icons": {
    "48": "icons/border-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://catalog.njit.edu/*"
      ],
      "js": [
        "courseCheck.js"
      ]
    }
  ],
  "permissions": [
    "webRequest"
  ],
  "host_permissions": [
    "*://catalog.njit.edu/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "njit-course-checker@kamilarif.com"
    }
  }
}