Is it possible to skip Fastify and just pass query and variables to Mercurius?

[thelinuxlich]

I'm using a library which autogenerates a nice API on top of a GraphQL schema, GenQL. I want to let the user create custom resolvers where they interact with the same API on the server-side, but skipping the HTTP layer, is it possible?

[mcollina]

I have used app.inject() in the past. It works great for this purpose. https://www.fastify.io/docs/latest/Testing/#benefits-of-using-fastifyinject