It's best to make it so easy for a designer to make responsive (and even adaptive) layouts (for both native mobile and web) that this AI-based contraption that is guaranteed to produce wrong outcomes some of the time becomes unnecessary, at least for any practical purpose (unless the goal is the automated copying of web pages which is a lot bigger problem than guessing the markup, given how much complex dynamic behavior is built into pages these days)
I've taken an attempt at simplifying the task of building responsive and adaptive React Native apps with the following little library.