Remove a "www" sub-domain.
Note: this version uses a regular expression which cannot be aware of what the top-level domain should be, which could have multiple segments. As a result, "www.co.uk", for example, will be erroneously shortened to "co.uk".
>= 4 is required. To install, type this at the command line:
npm install strip-www
const stripWWW = require('strip-www'); stripWWW('www.domain.com'); //-> domain.com