Pull query AST into separate library

I just realized that with very little work I could have my GHCJS front-end build up Project:M36 queries directly. It could then send them to a websocket on my server and get the results directly. All the serialization/deserialization would be done automatically. I know Project:M36 already has a websocket server, but this would allow me to do 2 key things:

1. Generate the AST *on the client directly*.
2. Rely on my application's authentication (which happens via JWT in a header).

However, GHCJS can't currently build Project:M36 because it has so many heavy server-side dependencies. If the AST types were in a separate library, I could share them between the back end and the front end.