$ sudo npm install array-flatten
$ sudo npm install -g array-flatten

If want to update the array-flatten package execute the command as below,

$ sudo npm update array-flatten

Update package globally,

$ npm install -g array-flatten

Git clone:

$ sudo  git clone https://github.com/rektide/array-flatten.git

$ sudo  npm install -g ./array-flatten

array-flatten@2.1.1 /usr/lib/node_modules/array-flatten

How to remove array-flatten package :

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

$ sudo npm uninstall array-flatten

Basic Information of array-flatten NPM Package: