Hono / GraphQL / Pothos integration issues

[armstrong-pv]

Full repro, including tests located here: https://github.com/armstrong-pv/hono-pothos-issue-repro

First of all, I'm really enjoying using Hono - great job on speed and simplicity 👏. I initially started with plain REST, but then moved on to using GraphQL using the middleware you provide. Pothos is a type safe GraphQL schema builder which I'd really like to use together with Hono, but I'm having some issues trying to get them to work together.

1. Context Propagation
   I can get the context from the pipeline to go to a root resolver, but not to go to individual resolvers, e.g. for mutations.
2. When I try to use authScopes for resolvers, the GraphQL processing returns this error: "Invalid value used as weak map key". I raised an issue in the Pothos repo here: Hono / Pothos scopes integration error hayes/pothos#1064, and the author thinks it's related to propagating the context object, so if 1 is solved, then this should be solved also.
3. It would be nice to opt out of the GraphQL error handling, e.g. by returning a plain old 401 http code, but everything gets wrapped in a GraphQL error. Not sure if there's anything that can be done about this.

I'm using Cloudflare Workers and it's not trivial to get everything up and running, so I have created a full repro of these issues, along with tests that demonstrate them at this repo: https://github.com/armstrong-pv/hono-pothos-issue-repro

There is a readme which covers setting everything up and running the tests: https://github.com/armstrong-pv/hono-pothos-issue-repro/blob/main/README.md.
It's pretty straightforward:

npm install
npm run tests

If you want to run in dev mode:

npm run dev

Many thanks!

[metrue]

Thanks @armstrong-pv , I will take a look at it.

Just created a pull request to fix the context propagation issue. #361