Examine source code of 豆瓣图书馆馆藏查询

{
  "update_url" : "https://clients2.google.com/service/update2/crx" ,
  "manifest_version" : 3 ,
  "name" : "豆瓣图书馆馆藏查询",
  "version" : "2.0",
  "description" : "在豆瓣图书详情页直接查询图书馆馆藏，支持多图书馆配置、主题色和本地查询记录。",
  "permissions" : [
    "storage" 
  ],
  "content_scripts" : [
    {
      "matches" : [
        "https://book.douban.com/subject/*" 
      ],
      "js" : [
        "content.js" 
      ],
      "css" : [
        "content.css" 
      ]
    }
  ],
  "background" : {
    "service_worker" : "background.js" 
  },
  "options_ui" : {
    "page": "options.html" ,
    "open_in_tab": true
  },
  "action" : {
    "default_title" : "豆瓣图书馆馆藏查询设置"
  }
}