$ sudo npm install valid-identifier
$ sudo npm install -g valid-identifier

If want to update the valid-identifier package execute the command as below,

$ sudo npm update valid-identifier

Update package globally,

$ npm install -g valid-identifier

Git clone:

$ sudo  git clone https://github.com/rektide/valid-identifier.git

$ sudo  npm install -g ./valid-identifier

valid-identifier@0.0.1 /usr/lib/node_modules/valid-identifier

How to remove valid-identifier package :

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

$ sudo npm uninstall valid-identifier

Basic Information of valid-identifier NPM Package: