Is there a way to change the direction of the animation?

[codenprose]

For example, when changing the position of a notification to ["right", "top"] it would be sweet to have the animation fade in from left to right instead of the default right to left.

[itsdevdom]

So, in general animations are defined in the CSS file. For now there is no way to customize them for your use case. You may write your own CSS animation though, and overwrite the existing one.