npm Error: EACCES: permission denied, access ‘/usr/lib/node_modules’

You try to install a package with npm globally and you get this? npm install –global …

npm ERR! Linux 4.14.78-desktop-1.mga6
 npm ERR! argv "/usr/bin/node" "/usr/bin/npm" "install" "--global" "web-ext"
 npm ERR! node v6.10.3
 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.

Cause: Your user does not have write permission to the folder ‘/usr/lib/node_modules’.

Clean Solution: Relocate the the folder where npm stores globally installed packages to some folder in your home directory:

mkdir ~/.nodejs_global
npm config set prefix ~/.nodejs_global

And now you can run npm install -g … =)