Error: EACCES: permission denied

I have same issue with webpack server installation on globally, Use steps from this Url Solved my issue, my be work for you.

Steps mention above There: Back-up your computer before you start.

Make a directory for global installations:

1. mkdir ~/.npm-global

Configure npm to use the new directory path:

2.npm config set prefix '~/.npm-global'

Open or create a ~/.profile file and add this line:

3.export PATH=~/.npm-global/bin:$PATH

Back on the command line, update your system variables:

4.source ~/.profile

Test: Download a package globally without using sudo.

npm install -g jshint

Instead of steps 2-4, you can use the corresponding ENV variable (e.g. if you don't want to modify ~/.profile):

NPM_CONFIG_PREFIX=~/.npm-global

Try to give all permission to your project folder with below command

sudo chmod -R 777 /yourProjectDirectoryName

run with

sudo npm install lodash

I had problem on Linux. I wrote

chown -R myUserName /home/myusername/myfolder

in my project folder.

WARNING: this is NOT the right way to fix it; DO NOT RUN IT, if you aren't sure of what could be the consequences.

This command fix the issue. It worked for me:

sudo npm install -g --unsafe-perm=true --allow-root