node-libidn
This library is intended to be a port of GNU Libidn to Javascript, for use in node.js. At the moment, however, only stringprep (rfc3454) is implemented. Punycode and IDNA are TBD.
Installation
npm install libidn
Usage
var stringprep = require('libidn').stringprep;
stringprep.nameprep("eXample.COM");
// other profiles, e.g.: stringprep.nodeprep, stringprep.resourceprep