I think there’s a general issue with design at startups— the actual products of most design departments are “jpgs”, and so most professional designers are really professional jpgers. This means designers are part of an upfront handoff process and not active participants in feature development.

I think the only recourse is to hire designers who understand how to interact with a UI component framework in code, and have design be a code stubbing process not a jpg producing process.

This does require for your design department to be built upfront to handle this kind of process, good luck trying to retrofit existing design departments codified around “jpg handoffs” to work with an implementation level source of truth.