npm install 失敗問題

npm ERR! The operation was rejected by your operating system.
npm ERR! It is likely you do not have the permissions to access this file as the current user
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.

發現是緩存問題導致。解決辦法：

1/刪除node modules中的全部文件。
2/清除npm緩存 , 命令 npm cache clean --force。