Exact input types?

[cdomigan]

Is there a way to get the typegen to wrap input object types in an Exact<>? It's not catching me passing unknown properties to mutation input objects - something I should be able to catch in the type system.

Thank you! :)

[vicary]

@graphql/codegen does not support this directly. You may use the transformSchema callback to update the generated schema, or simply type guard via satisfies in mutations:

import { useMutation, type Exact, type Variables } from "@/gqty";

const [mutate, mutationStates] = useMutation(({ updateSomething }) => {
  const foo = updateSomething(
    data satisfies Exact<Variables<typeof updateSomething>>
  );
  
  return foo.id;
});