No, there's nothing which obfuscates it. There has always been this warning in exported HTML files:
<!-- Note: Construct 2 does not currently employ any obfuscation techniques. As a result, you should assume that any game you publish can be reverse engineered to its editable Construct 2 project. -->
Obfuscation can be done to better protect your exported projects. It's something on the todo list. There aren't any known decompilers, but if somebody made one, we'd immediately add some obfuscation techniques, which would make it wasted effort for the decompilers :)
By the nature of HTML5 it's very difficult to completely protect projects. Unfortunately, it's the nature of the platform that it's much easier to edit existing exported projects. We'll definitely do our best on obfuscation, though, we've got some neat tricks we can pull.