Examine source code of CodeforcesSync

{
  "name": "CodeforcesSync",
  "version": "2.3.2",
  "description": "Automatically syncs your accepted Codeforces submissions to a GitHub repository and tracks your daily solving streak.",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "codeforcessync@codeforcessync.extension",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "alarms",
    "scripting",
    "identity"
  ],
  "host_permissions": [
    "https://api.github.com/*",
    "https://codeforces.com/*",
    "http://codeforces.com/*"
  ],
  "background": {
    "scripts": [
      "service-worker-loader.js"
    ],
    "type": "module"
  }
}