npm run serve

> vue@0.1.0 serve      
> vue-cli-service serve

npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path D:\node\node_cache\_cacache
npm ERR! errno -4048
npm ERR! Error: EPERM: operation not permitted, mkdir 'D:\node\node_cache\_cacache'
npm ERR!  [Error: EPERM: operation not permitted, mkdir 'D:\node\node_cache\_cacache'] {
npm ERR!   errno: -4048,
npm ERR!   code: 'EPERM',
npm ERR!   syscall: 'mkdir',
npm ERR!   path: 'D:\\node\\node_cache\\_cacache'
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 the
npm ERR! permissions of the file and its containing directories, or try running
npm ERR! the command again as root/Administrator.

npm ERR! Log files were not written due to an error writing to the directory: D:\node\node_cache\_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal

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解决了，vscode 右键以管理员身份运行就OK了，虽然不知道为啥，之前cmd以管理员身份运行npm run serve就报错