@kgdev just to qualify, can you describe some intended behavior? do you want to be able to automatically add __typename to every selection set when using graphql-tag?

yes. at least with a option like import 'some.graphql?typename=true'. And we can enable this by default.

Taking a queue from existing options I guess it should be implemented to be used like this?

import gql, { enableTypenameInsertion } from 'graphql-tag'

enableTypenameInsertion()

👋 I'd like to take this on. My approach was just to use the apollo-utils library to do the heavy lifting and add typename appropriately