Examine source code of BUKMAK - Bookmark Manager

{
  "manifest_version": 3,
  "name": "BUKMAK - Bookmark Manager",
  "version": "1.0.0",
  "description": "Save, organize, and find your bookmarks with folders, tags, and search — synced across all your browsers via Google account.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://api.bukmak.com/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; connect-src https://api.bukmak.com"
  },
  "content_scripts": [
    {
      "matches": [
        "https://bukmak.com/*"
      ],
      "js": [
        "content/spaces-auth-bridge.js"
      ],
      "run_at": "document_end"
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "Open Bookmark Manager"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background/index.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "bukmak@bukmak.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "bookmarksInfo",
          "authenticationInfo"
        ]
      }
    }
  }
}