For anyone struggling with grouping, aggregation, etc., I found this client-side library that adds the majority of lodash functions to your queries. Transformations are applied client-side, so it will only get you so far, but at least you can define your queries without any additional steps: https://github.com/APIs-guru/graphql-lodash

Interesting. So basically it's a pre and post processor for graphql requests that uses custom directives. I imagine that pattern could be used for other things as well.

Yes, I never even thought about it like that before, but it opens up a whole new world of possibilities

I can imagine a simple framework based on this idea that enables client side directives to be added as modules.