I want to install something by npm, but it says 'error' and 'checkPermissions Missing'

Question

its my first post, so im not sure whether right way to answer im doing or not ..haha

Jongryului-MacBook-Pro:~ jongryulpark$ npm install uglify-js -g
npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules
npm ERR! path /usr/local/lib/node_modules
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access
npm ERR! Error: EACCES: permission denied, access '/usr/local/lib/node_modules'
npm ERR!  { Error: EACCES: permission denied, access '/usr/local/lib/node_modules'

as a title, i don't know why it makes error..

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 (though this is not recommended).

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/jongryulpark/.npm/_logs/2018-10-18T01_28_56_508Z-debug.log
Jongryului-MacBook-Pro:~ jongryulpark$ 

to fix this i googled, and heard about nvm.. but that doesnt work neither

Answer 1

Try running the command with sudo.

sudo npm install