There is an issue trying to execute npm install you will get the following error:
npm ERR! git fetch -a origin (git://github.com/squizlabs/HTML_CodeSniffer.git) fatal: remote error:
npm ERR! git fetch -a origin (git://github.com/squizlabs/HTML_CodeSniffer.git) The unauthenticated git protocol on port 9418 is no longer supported.
To solve this issue is needed to change the git:// to https:// or to github://