Examine source code of Task Manage PRO

{
  "manifest_version": 2,
  "name": "Task Manager",
  "version": "1.0.0",
  "description": "A Todoist-like task management extension",
  "permissions": [
    "storage",
    "notifications",
    "scripting"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "jenzcore1@gmail.com",
      "strict_min_version": "102.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup.html"
  },
  "content_security_policy": "script-src 'self'; object-src 'self';"
}