$ sudo npm install path-to-regexp
$ sudo npm install -g path-to-regexp

If want to update the path-to-regexp package execute the command as below,

$ sudo npm update path-to-regexp

Update package globally,

$ npm install -g path-to-regexp

Git clone:

$ sudo  git clone https://github.com/rektide/path-to-regexp.git

$ sudo  npm install -g ./path-to-regexp

path-to-regexp@2.1.0 /usr/lib/node_modules/path-to-regexp

How to remove path-to-regexp package :

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

$ sudo npm uninstall path-to-regexp

Basic Information of path-to-regexp NPM Package: