Node-extjs-express is a project mainly written in JavaScript, it's free.
Extension to node-extjs module for ExpressJS support
An extension to node-extjs to support the ExpressJS Node web framework.
This is a work in progress and perhaps a work of insanity as well!
npm install node-extjs-express
This will load all the necessary dependencies.
Check the examples for full usage. Will update this more over time.
require("node-extjs-express");
console.log(Ext.getVersion().version);