Thank you for your feedback Maxim!
Well, not everybody is regularly reverse-engineering Angular :-)
I checked out your Medium profile, and it indeed seems like you have a lot of interesting articles. I wish I had something like this article back when I worked on this issue in angular2-moment, so I am sure it will be very valuable for others as well.
In my case, I had an opportunity to ask these questions during my Compiler workshop in ng-conf, you can actually hear me asking Tobias (who wrote the compiler) in the live stream recording.
Can you share with me the questions that you have? I will try to get the answers for you.