Thank you for your reply, it is very helpful. I’m still working through the interesting examples, and learning alot. 
you are right, the versions are a bit tricky. Since I once looked for hours for a “bug”, that was only related to a wrong phaser version, I always double check if I’m using the correct/latest version.
Would you maybe know about unittesting phaser code also?
I just found some older threads like, but none have a template on how to unit test a phaser application: