Set declarationKind and useImplementingTypes on client preset

[avin-kavish]

I'd like to switch to interfaces and use implementing types with the client preset. I tried passing options like this, it didn't work,

    './gql/': {
      preset: 'client',
      config: {
        declarationKind: 'interface',
      },
    },

How do I set this?

[JoepLijnen]

I don't think this is currently supported (at least not for Vue, which I am using: https://the-guild.dev/graphql/codegen/docs/guides/react-vue#config-api ) . I desperately would like this functionality too; I now have to write very awkward code, seeing as the types that are generated are simply not compatible with calls to Typescript stuff such as instanceof.

This is actually supported when not using a client-preset (as per, for example: https://stackoverflow.com/a/64322143 ) .. and it's painful to be lacking this. I seriously don't see why anyone would want to use type instead of interface in Typescript, except for situations where you are explicitly generating code for compatibility with Javascript.