$ sudo npm install sass-loader
$ sudo npm install -g sass-loader

If want to update the sass-loader package execute the command as below,

$ sudo npm update sass-loader

Update package globally,

$ npm install -g sass-loader

Git clone:

$ sudo  git clone https://github.com/rektide/sass-loader.git

$ sudo  npm install -g ./sass-loader

sass-loader@6.0.6 /usr/lib/node_modules/sass-loader

How to remove sass-loader package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall sass-loader

Basic Information of sass-loader NPM Package: