Examine source code of Wordless Game

{
  "manifest_version": 2,
  "name": "Wordless Game",
  "version": "1.0.0",
  "description": "Master the Ultimate Word Puzzle Challenge - A fun and challenging word guessing game to test your vocabulary and deduction skills.",
  "permissions": [
    "storage",
    "tabs"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Wordless Game",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'; style-src 'self' 'unsafe-inline'",
  "applications": {
    "gecko": {
      "id": "wordless-game@example.com",
      "strict_min_version": "58.0"
    }
  }
}