$ sudo npm install pg-promise
$ sudo npm install -g pg-promise

If want to update the pg-promise package execute the command as below,

$ sudo npm update pg-promise

Update package globally,

$ npm install -g pg-promise

Git clone:

$ sudo  git clone https://github.com/rektide/pg-promise.git

$ sudo  npm install -g ./pg-promise

pg-promise@7.3.2 /usr/lib/node_modules/pg-promise

How to remove pg-promise package :

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

$ sudo npm uninstall pg-promise

Basic Information of pg-promise NPM Package: