Add TypedDocumentNode support

[ardatan]

Thank you for this great library!
This PR adds TypedDocumentNode support to graphql-jit. For example, generated TypedDocumentNode queries will have type safe signature with graphql-jit.
It also enables to use generics in CompiledQuery to have better type safety.
https://github.com/dotansimha/graphql-typed-document-node

[ardatan]

Is there anything I can do to get this merged?

[oporkka]

Is there anything I can do to get this merged?

We have to get two Zalando employees to review this PR. As the reviewers might not be familiar with TypedDocumentNode, my proposal would be to extend the PR description to extend why adding support for TypedDocumentNode is needed. I see it's about type safety, but how would the experience of users of GraphQL-jit improve? Do you have any code examples? Do the current users need to change their code somehow if this gets merged and they update GraphQL-jit?

[dotansimha]

Is there anything I can do to get this merged?

We have to get two Zalando employees to review this PR. As the reviewers might not be familiar with TypedDocumentNode, my proposal would be to extend the PR description to extend why adding support for TypedDocumentNode is needed. I see it's about type safety, but how would the experience of users of GraphQL-jit improve? Do you have any code examples? Do the current users need to change their code somehow if this gets merged and they update GraphQL-jit?

Sure.

GraphQL-Codegen generates a ready-to-use TypedDocumentNode (it's basically a DocumentNode with the response and variables types burned into the type).
When a user passes this TypedDocumentNode to GraphQL-JIT's execute function, it gets type-safety out of the box (because of TypeScript's type-inference):

const executionResult = await compiledQuery.query(root, context, variables);
// Now, executionResult is fully typed automatically, and variables is also checked. 

This way, developers don't need to specify types manually at all. TypedDocumentNode is now adopted by graphql-js, apollo-client, urql and many other popular libraries. This only modifies the types signature of graphql-jit and add support for TypedDocumentNode, without introducing any code change or a breaking change.

[ruiaraujo]

@ardatan please run the formatter. This PR lgtm!

[ardatan]

I think it is good now! @ruiaraujo

[ruiaraujo]

👍

[ruiaraujo]

@ardatan i believe you are pushing code to the wrong branch.

[ardatan]

@ruiaraujo Yes I realized that :) I cherrypicked those commits to the other PR

[ardatan]

Ok I fixed lint/format issue because of the new import.

[ruiaraujo]

👍

[ardatan]

I think it is ready to merge right? @ruiaraujo

[ruiaraujo]

Once a colleague from zalando approves, it will be merged.

[ardatan]

@boopathi Could you review please? :)

[addityasingh]

👍