[onei]

I think the problem this is trying to solve is a poorly defined interface from the backend. It's not to everyone's taste but openapi/swagger solves that problem. The hypothetical conversation around the missing property is resolved simply by specifying what the API returns - if it's not in the spec then it's not going to come back.

Alternatively, it speaks of a dysfunctional dynamic between front-end and back-end developers, but no amount of technical solution fixes that.