The graphql GraphQLError constructor. options is undefined (not a
modeled object) so the real typeof GraphQLError — whose constructor is
new (message: string, options?: GraphQLErrorOptions) — stays assignable:
contravariance requires the facade's options to be assignable to
GraphQLErrorOptions | undefined, and undefined is.
Usage
import { type GraphqlModuleLike } from "graphql-plugin/src/index.ts";