over
JavaScript function overloading framework.
subscript
Fast and tiny expression evaluator with minimal syntax.
ofn
Overloads a function. Makes parameters optional.
overload2
Elegant solution for function overloading in JavaScript
node-proxy
A module for node implementing __noSuchMethod__-type handlers, such as object overloading, as part of the Harmony Catch-All Proxies specification found at http://wiki.ecmascript.org/doku.php?id=harmony:proxies