Wow. Slow week on the Javascript front. Fortunately there are at least a few people still hard at work out there, and here are some of the things they built:
Yeti
YUI already has one of the best automated javascript testing frameworks on offer. When you consider how easily and thoroughly it integrates with Selenium and Hudson, [...]

Diffable
Diffable is a new project from a scrappy little web firm called Google. Here’s the idea behind Diffable: If a user has a version of your page’s Javascripts cached, the next time that user visits your page, they’ll only have to download any changes to those scripts.
Diffable was initially developed by members of the [...]

Connect
Tim Caswell and TJ Holowaychuck, both of whom are members of the ExtJS team, have just released Connect: a middleware framework for NodeJS. In his blog post announcing Connect, Caswell cites Ruby’s Rack as an inspiration for the project.
A Connect server runs a set of middleware modules, each of which performs a specific action when [...]

AppengineJS
Yes, it’s true! You can now run Javascript applications on Google’s App Engine platform thanks to the new AppengineJS project. The project is based on Rhino, the Java-based Javascript runtime, which is why it can run on Google’s Java- and Python-only platform. Of course, since Rhino has been around forever, simply executing Javascript on App [...]