Exposes predefined Unicode normalization functions that are required by many protocols. This is just a binding to ICU, which is said to be fast.
# Debian
apt-get install libicu-dev
# Gentoo
emerge icu
# OSX using MacPorts
port install icu +devel
# OSX using Homebrew
brew install icu4c
ln -s /usr/local/Cellar/icu4c/<VERSION>/bin/icu-config /usr/local/bin/icu-config
npm install node-stringprep
var StringPrep = require('node-stringprep').StringPrep;
var prep = new StringPrep('nameprep');
prep.prepare('Äffchen') // => 'äffchen'
For a list of supported profiles, see node-stringprep.cc