Error: EACCES: permission denied, mkdir '/usr/local/lib/node_modules/node-sass/build'

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Error: EACCES: permission denied, mkdir '/usr/local/lib/node_modules/node-sass/build'
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Solution :-

You need to change ownership of node_modules, because you use sudo npm install -g node-sass so its ownership set to root,

To change ownership to current user as group -

sudo chown -R root:YOUR_USERNAME /usr/local/lib/node_modules/

sudo chmod -R 775 /usr/local/lib/node_modules/

And never use sudo for npm related query.

Try this

sudo npm install -g --unsafe-perm node-sass

Or this

sudo npm install -g --unsafe-perm --verbose @angular/cli

Run this command

sudo npm install -g <ModuleName> --unsafe-perm=true --allow-root

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