Skipping Optional Dependency

[Marsovski]

Linux Mint 18.1 Serena
npm 3.10.10

Try
npm install -g vue-cli

Response

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules/vue-cli/node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.0.17: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
npm ERR! Linux 4.4.0-62-generic
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "install" "-g" "vue-cli"
npm ERR! node v6.9.5
npm ERR! npm  v3.10.10
npm ERR! path /usr/lib/node_modules
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access

npm ERR! Error: EACCES: permission denied, access '/usr/lib/node_modules'
npm ERR!     at Error (native)
npm ERR!  { Error: EACCES: permission denied, access '/usr/lib/node_modules'
npm ERR!     at Error (native)
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   syscall: 'access',
npm ERR!   path: '/usr/lib/node_modules' }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! Please include the following file with any support request:
npm ERR!     /home/milos/npm-debug.log

[egoist]

The real error is EACCES: permission denied, access '/usr/lib/node_modules' maybe you need to run the command with sudo

[Marsovski]

sudo Solved problem, tnx.