Would it be possible to use this to override the behaviour of the Unity editor (not for games built in Unity)?

[vinaysshenoy]

I am trying to build something that needs to load before the Unity editor starts importing assets on launching a project. The gist is that I want to intercept any file system API calls which the Unity editor makes and capture some information when it does. I could override the calls to the file system API via reflection, but the editor does not seem to way to hook into the editor launch pipeline.

Unity does have an [InitializeOnLoad] functionality, but that only starts executing after the asset database refresh completes, so it does not work for my use case. I am wondering if I could use this to run code before the editor starts importing the project.