Examine source code of MarmoStats

{
  "name": "MarmoStats",
  "short_name": "MarmoStats",
  "description": "A Firefox Extension for visualizing Marmoset test results",
  "version": "1.2.1",
  "manifest_version": 3,
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "MarmoStats@example.com"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://marmoset.student.cs.uwaterloo.ca/view/instructor/*"
      ],
      "js": [
        "lib/jquery-3.4.1.min.js",
        "js/general.js"
      ],
      "css": [
        "css/general.css"
      ]
    },
    {
      "matches": [
        "https://marmoset.student.cs.uwaterloo.ca/view/instructor/course.jsp*"
      ],
      "js": [
        "lib/jquery-3.4.1.min.js",
        "lib/chart.js",
        "js/homepage.js"
      ],
      "css": [
        "css/marmostats.css",
        "css/toggle.css"
      ]
    },
    {
      "matches": [
        "https://marmoset.student.cs.uwaterloo.ca/view/instructor/projectTestResults.jsp*"
      ],
      "js": [
        "lib/jquery-3.4.1.min.js",
        "lib/chart.js",
        "js/test_details.js"
      ],
      "css": [
        "css/marmostats.css"
      ]
    },
    {
      "matches": [
        "https://marmoset.student.cs.uwaterloo.ca/view/instructor/project.jsp*"
      ],
      "js": [
        "lib/jquery-3.4.1.min.js",
        "lib/chart.js",
        "js/overview.js"
      ],
      "css": [
        "css/marmostats.css"
      ]
    },
    {
      "matches": [
        "https://marmoset.student.cs.uwaterloo.ca/view/instructor/studentProject.jsp?*"
      ],
      "js": [
        "lib/jquery-3.4.1.min.js",
        "js/submission.js"
      ],
      "css": [
        "css/marmostats.css"
      ]
    },
    {
      "matches": [
        "https://marmoset.student.cs.uwaterloo.ca/view/instructor/student.jsp?*"
      ],
      "js": [
        "lib/jquery-3.4.1.min.js",
        "js/student.js"
      ],
      "css": [
        "css/marmostats.css"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*"
      ],
      "matches": [
        "https://marmoset.student.cs.uwaterloo.ca/*"
      ]
    }
  ],
  "icons": {
    "16": "icons/marmostats-16.png",
    "32": "icons/marmostats-32.png",
    "48": "icons/marmostats-48.png",
    "64": "icons/marmostats-64.png",
    "128": "icons/marmostats-128.png"
  }
}