[Vuejs]-Error for installing latest vue-cli npm ERR! code EACCES npm ERR! syscall mkdir npm ERR! path /usr/local/lib/node_modules/@vue

EACCES errors can occur on recent versions of MacOS because security has been tightened.

Try following the steps here to re-install npm with a node version manager which should stop these errors from happening:
https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally