~/Projects/js/learn $ npm install --save-dev stylelint-html-processor
npm ERR! Linux 4.7.2-1-ARCH
npm ERR! argv "/usr/bin/node" "/usr/bin/npm" "install" "--save-dev" "stylelint-html-processor"
npm ERR! node v6.5.0
npm ERR! npm v3.10.7
npm ERR! code E404
npm ERR! 404 Registry returned 404 for GET on https://registry.npmjs.org/stylelint-html-processor
npm ERR! 404
npm ERR! 404 'stylelint-html-processor' is not in the npm registry.
npm ERR! 404 You should bug the author to publish it (or use the name yourself!)
npm ERR! 404
npm ERR! 404 Note that you can also install from a
npm ERR! 404 tarball, folder, http url, or git url.
npm ERR! Please include the following file with any support request:
npm ERR! /home/alex/Projects/js/learn/npm-debug.log