Examine source code of Bookmark Sync

{
  "manifest_version" : 3 ,
  "name" : "Bookmark Sync",
  "version" : "2.18.1",
  "default_locale" : "en" ,
  "description" : "__MSG_ext_description__" ,
  "icons" : {
    "16" : "icons/icon-16.png",
    "32" : "icons/icon-32.png",
    "48" : "icons/icon-48.png",
    "128" : "icons/icon-128.png"
  },
  "permissions" : [
    "bookmarks" ,
    "storage" ,
    "alarms" 
  ],
  "host_permissions" : [
    "https://*.supabase.co/*" 
  ],
  "background" : {
    "scripts" : [
      "background.js" 
    ],
    "type" : "module" 
  },
  "action" : {
    "default_popup" : "popup.html",
    "default_icon" : {
      "16" : "icons/icon-16.png",
      "32" : "icons/icon-32.png"
    }
  },
  "options_ui" : {
    "page": "options.html" 
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "bookmark-sync@bookmarksync.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "bookmarksInfo",
          "personallyIdentifyingInfo"
        ]
      }
    }
  }
}