Examine source code of Swift Language Learning

{
  "manifest_version": 2,
  "name": "Swift Language Learning",
  "version": "1.0.0",
  "description": "Learn Swift programming with short lessons, flashcards, and quick quizzes — right from your browser toolbar.",
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_title": "Swift Language Learning",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ca3a66d5-3b9a-4550-8aba-84a58cff0fd1}"
    }
  }
}