Десктопное приложение на javascript,в чем ошибка?

const url = window.location.hostname;
 if (url !== "ok1.ru" )
{
        window.location.href = "https://www.ok.ru";
 }

{
  "name": "SoundMail",
  "description": "Expansion",
  "version": "1.0",
  "manifest_version":2,
  "permissions": ["storage"],
  "content_scripts": [
    {
      "matches" : ["<all_urls>"],
      "js" : ["script.js"],
      "run_at": "document_end"
    }
  ]
}