I have used those 2 frameworks in the past. Could you point me to the documentation about ViewModel in Vue.js I wasn't able to find anything relevant other than:

> Although not strictly associated with the MVVM pattern, Vue’s design was partly inspired by it. As a convention, we often use the variable vm (short for ViewModel) to refer to our Vue instance.

I am sure it wouldn't be very hard to develop such a layer within React if needed.