Use schemaDirectives in ApolloClient

[FabHof]

I would like to use schemaDirectives in ApolloClient to be able to use schema directives in local schemas. (The same as it is possible with makeExecutableSchema).

new ApolloClient({
  cache: new InMemoryCache(),
  typeDevs,
  resolvers,
  schemaDirectives: {
    computed: computedDirective
  }
})

This would make it possible to use custom directive in local schemas.

Possible use:

  extend type User {
    fullName: String @computed(value: "$firstName $lastName")
  }

Is there any other way to use custom directives in local schemas?