This program is irrelevant as of Node.js v0.8.1, see joyent/node@f2a9ed487369ab7222522e1097708550adbe165c.
Allow using require('sys') with Node.js v0.8.x
Just use npm to install it:
$> npm install sys-not-throw
And include one line on the top of your module:
require("sys-not-throw");
P.S. Note, tht this is a temporary hack. Fix your modules and help to fix all Node.js universe.