Per-request headers

It is possible to setup headers at construction time, but not possible to set headers for a particular request.

It is possible to work around this by wrapping Genql with a function that creates an instance anew for each request, but obviously not ideal.

type EnhancedGenqlClient = {
  mutation<R extends Genql.MutationRequest>(
    request: R & { __name?: string },
    config?: { headers?: Record<string, string> }
  ): Promise<GenqlRuntime.FieldsSelection<Genql.Mutation, R>>
  query<R extends Genql.QueryRequest>(
    request: R & { __name?: string },
    config?: { headers?: Record<string, string> }
  ): Promise<GenqlRuntime.FieldsSelection<Genql.Query, R>>
}

  const enhancedGenql: EnhancedGenqlClient = {
    mutation(selectionSet, config) {
      const genql = Genql.createClient({
        url: `http://localhost:${serverPort}/api/graphql`,
        headers: {
          Authorization: `Bearer ${token}`,
          ...config?.headers,
        },
      })
      return genql.mutation(selectionSet)
    },
    query(selectionSet, config) {
      const genql = Genql.createClient({
        url: `http://localhost:${serverPort}/api/graphql`,
        headers: {
          Authorization: `Bearer ${token}`,
          ...config?.headers,
        },
      })
      return genql.query(selectionSet)
    },
  }

Open to a pull-request for this?

Thanks!

[jgoux]

Hey @GavinRay97, you must think about Hasura’s use case? We’re in the same boat, we need to send a x-hasura-role per request. We use the createClient() trick currently but it’s not that convenient.

[remorses]

This feature is currently not possible because the batching library i am using does not let me pass headers per request