wmde/Diff — pull request #16 by thiemowmde (2014-10-21 14:39:47+00:00)
Title: Fix multiple code style warnings

* `assertHasKey` is used in a subclass. Obviously this bit of code was never executed (would have been failed horribly). But I don't think I can remove it.
* Some of the `@var` hints did the opposite and created extra warnings. Relying on the `typeof` checks is fine.