[Feature Request] Add hasCache prop to Relay readyState?

[SatyaFariz]

Sorry this isn't an issue but rather a feature request

I'd like to programmatically check if there is a cache hit in the render prop so that i can pass has hasCache prop to my component. So this is my use case:
I want to increase perceived performance in my RN app without caching my screen. I thought I could just use QueryRenderer with caching enabled by default then pass hasCache prop to my component. Then I could just refetch the whole data when that component is mounted using relay modern createRefetchContainer only if there is a cache hit. That way I could drastically improve perceived performance of my app.

[robrichard]

@SatyaFariz, the official QueryRenderer bundled with Relay has a prop dataFrom=STORE_THEN_NETWORK. It sounds like this is pretty close to what you are trying to accomplish.