$ sudo npm install doctrine
$ sudo npm install -g doctrine

If want to update the doctrine package execute the command as below,

$ sudo npm update doctrine

Update package globally,

$ npm install -g doctrine

Git clone:

$ sudo  git clone https://github.com/rektide/doctrine.git

$ sudo  npm install -g ./doctrine

doctrine@2.0.0 /usr/lib/node_modules/doctrine

How to remove doctrine package :

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

$ sudo npm uninstall doctrine

Basic Information of doctrine NPM Package: