Modern browsers all have a window.URL constructor that implements the URLUtils interface. It allows parsing and manipulating of URLs. This package offers a shim for Node to implement similar behaviour. It's based on the popular URIjs.
Command line:
npm install urlutils
var URL = require('urlutils');
new URL('http://example.com/foobar').pathname; // "/foobar"WHATWG URL Living Standard http://url.spec.whatwg.org/
MDN URL Documentation https://developer.mozilla.org/en-US/docs/Web/API/URL