Examine source code of Codeforces Practice Tracker

{
  "manifest_version": 2,
  "name": "Codeforces Practice Tracker",
  "version": "1.2.0",
  "content_scripts": [
    {
      "matches": [
        "https://codeforces.com/profile/*"
      ],
      "css": [
        "css/style.css"
      ],
      "js": [
        "js/lib/jquery-3.5.1.min.js",
        "js/lib/Chart.min.js",
        "js/classes/section.js",
        "js/classes/sectionInfo.js",
        "js/classes/problemsList.js",
        "js/classes/sectionToggleButton.js",
        "js/classes/buttonsSection.js",
        "js/classes/header.js",
        "js/classes/dataList.js",
        "js/classes/submissionsChart.js",
        "js/classes/dataElement.js",
        "js/Util/dateHandlers.js",
        "js/Util/dataPopulation.js",
        "js/Util/apiDataHandlers.js",
        "js/addStaticsTabButton.js",
        "js/addLoadingMessage.js",
        "js/loadStaticsTab.js",
        "js/fetchAPIData.js",
        "js/index.js"
      ]
    }
  ],
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "browser_action": {
    "default_popup": "./html/popup.html"
  },
  "permissions": [
    "storage"
  ],
  "description": "Track your practice progress on Codeforces."
}