1.安装npm install -g npm-check-updates
可能会出现以下错误：
npm ERR! syscall mkdirnpm ERR! path D:\node\node_global\node_modules\npm-check-updatesnpm ERR! errno -4048npm ERR! Error: EPERM: operation not permitted, mkdir 'D:\node\node_global\node_modules\npm-check-updates'npm ERR! [Error: EPERM: operation not permitted, mkdir 'D:\node\node_global\node_modules\npm-check-updates'] {npm ERR! errno: -4048,npm ERR! code: 'EPERM',npm ERR! syscall: 'mkdir',npm ERR! path: 'D:\\node\\node_global\\node_modules\\npm-check-updates'npm ERR! }npm ERR! npm ERR! The operation was rejected by your operating system.npm ERR! It's possible that the file was already in use (by a text editor or antivirus),npm ERR! or that you lack permissions to access it.npm ERR! npm ERR! If you believe this might be a permissions issue, please double-check thenpm ERR! permissions of the file and its containing directories, or try runningnpm ERR! the command again as root/Administrator.npm ERR! A complete log of this run can be found in:npm ERR!D:\node\node_cache\_logs\-03-07T06_46_10_432Z-debug-0.log
以上错误的原因：
没有权限创建文件夹
解决方案：使用CMD命令，用管理员打开，在该目录下执行该命令
2.执行下面命令（显示当前目录下项目中所有新的依赖包）
ncu
3.更新项目package文件
ncu -u
以上操作完毕之后，查看package.json 文件，可以看到依赖包已经更新
关于npm-check-updates更多用法，请查看npm-check-updates - npm
