package.json必须是实际的JSON,而不仅仅是JavaScript

我用 http://jsonlint.com/来检查这个package.json文件的语法

{
  "name": "hello-world","description": "hello world test app","version": "0.0.1","private": true,"dependencies": {
    "express": “4.6.1"
  }
}

它返回错误

Parse error on line 7:
...        "express": “4.6.1"  }}
----------------------^
Expecting 'STRING','NUMBER','NULL','TRUE','FALSE','{','['

不知道这是什么问题.终端抛出使用npm安装的错误

"Failed to parse package.json data.
npm ERR! package.json must be actual JSON,not just JavaScript."

解决方法

只需键入npm缓存清除提示符,所有的事情必须重新工作.