Examine source code of Clockify Time Tracker

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "short_name": "Clockify",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "background": {
    "scripts": [
      "moment.js",
      "contentScripts/URLPatternHelper.js",
      "contentScripts/service-localstorage.js",
      "contentScripts/defaultProject.js",
      "contentScripts/service-background.js",
      "api-services/workspace-service.js",
      "api-services/token-service.js",
      "api-services/user-service.js",
      "api-services/project-task-service.js",
      "api-services/tag-service.js",
      "api-services/time-entry-service.js",
      "api-services/client-service.js",
      "api-services/auth-service.js",
      "api-services/analytics-service.js",
      "api-services/selectors-service.js",
      "api-services/onboardingSurvey.service.js",
      "contentScripts/integration-background.js",
      "contentScripts/custom-field-service-background.js",
      "contentScripts/clockifyLocales.js",
      "contentScripts/background.js",
      "api-services/analytics-service.js",
      "contentScripts/webSocket-background.js",
      "contentScripts/idle-detection-background.js",
      "contentScripts/context-menu.background.js",
      "contentScripts/notification-background.js",
      "contentScripts/stop-timer-at-background.js",
      "contentScripts/reminder-background.js",
      "contentScripts/pomodoro-background.js",
      "api-services/feedback-service.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1262fc44-5ec9-4088-a7a7-4cd42f3f548d}",
      "strict_min_version": "58.0"
    }
  },
  "version": "2.12.2",
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Clockify"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "vendors.bundle.js",
        "./global.content-script.bundle.js"
      ]
    }
  ],
  "options_ui": {
    "page": "settings.html",
    "open_in_tab": true
  },
  "commands": {
    "quick-start-stop-entry": {
      "suggested_key": {
        "default": "Ctrl+Shift+U"
      },
      "description": "Quick start/stop current entry"
    }
  },
  "icons": {
    "16": "assets/images/logo-16.png",
    "48": "assets/images/logo-48.png",
    "128": "assets/images/logo-128.png"
  },
  "web_accessible_resources": [
    "assets/images/*.png",
    "assets/images/*.svg",
    "assets/images/ui-icons/*.svg",
    "_locales/*/messages.json"
  ],
  "permissions": [
    "contextMenus",
    "*://*.clockify.me/*",
    "storage",
    "tabs",
    "*://*/",
    "activeTab",
    "identity",
    "idle",
    "notifications",
    "*://developer.mozilla.org/*",
    "webRequest",
    "alarms",
    "scripting"
  ],
  "optional_permissions": [
    "*://*/"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'"
}