strip-www

Remove a "www" subdomain from a hostname.

[!NOTE]

This library uses a rather complex algorithm for parsing hostnames, which can result in bundled file sizes that are larger than you might expect. If all you want is a simple RegExp, use a 1.x release; but first read about its edge cases.

Install

npm install strip-www

Usage

import stripWWW from 'strip-www';

stripWWW('www.domain.com'); //-> 'domain.com'
stripWWW('www.www.domain.com'); //-> 'www.www.domain.com'
stripWWW('www.unlisted-tld'); //-> 'www.unlisted-tld'

stripWWW('www.www.domain.com', true); //-> 'www.domain.com'

The hostname must be Punycode encoded, as provided by a URL:

stripWWW('www.ᄯᄯᄯ.com'); //-> 'www.ᄯᄯᄯ.com'

const url = new URL('http://www.ᄯᄯᄯ.com');
stripWWW(url.hostname); //-> 'xn--brdaa.com'

If necessary, you can decode after with punycode:

import { toUnicode } from 'punycode';

toUnicode('xn--brdaa.com'); //-> 'ᄯᄯᄯ.com'