Federation for existing schemas: graphql-transform-federation

[0xR]

Sometimes a rebuild to use graphql federation is not possible / desirable. I'm working on a schema transform that allows you to add federation to any existing schema: graphql-transform-federation. The idea is that you add the information required for federation and the transform will ensure the schema conforms to the federation API.

I was wondering whether this approach aligns to with your ideas.

1. Are you interested in adding something like this to buildFederatedSchema? buildFederationSchema(schema, config?: FederationConfig)
2. What do you think of this approach compared to Build Federated Schemas From Existing Schema apollo-server#3013 that relies on adding non-standard functions to GraphQL types

Other issues that could be solved with this:
prisma-labs/graphql-framework-experiment#148
MichalLytek/type-graphql#351

[mengqing]

Also looking into a solution for this

[luijar]

Can someone please help out here? I need to federate to an existing schema that does not use federation. It's not even an Apollo Server and a rebuild is out of the question since it's just a big project. Existing libraries are not working at the moment with latest releases of the @apollo/* libs.