MutableLiveData has been updated and now it has a constructor that accepts an initial value 🙂
From what I can see, the constructor is available starting from this version:
implementation 'androidx.lifecycle:lifecycle-extensions:2.1.0-alpha01'
It’s a shame they haven’t updated MediatorLiveData to reflect that, though.
2.1.0 is finally stable, so now you can actually see the new constructor in the documentation.