I'm trying to return Errors from my resolvers when something is going wrong. An example below. But I'm getting errors from the Typescript compiler.

0]   Types of property 'me' are incompatible.
[0]     Type '(_: {}, __: {}, context: ExtendedContext) => Promise<AuthenticationError | User>' is not assignable to type 'ResolverFn<Maybe<ResolverTypeWrapper<User>>, {}, ExtendedContext, {}> | ResolverWithResolve<Maybe<ResolverTypeWrapper<User>>, {}, ExtendedContext, {}> | undefined'.
[0]       Type '(_: {}, __: {}, context: ExtendedContext) => Promise<AuthenticationError | User>' is not assignable to type 'ResolverFn<Maybe<ResolverTypeWrapper<User>>, {}, ExtendedContext, {}>'.
[0]         Type 'Promise<AuthenticationError | User>' is not assignable to type 'User | Promise<User> | Promise<Maybe<ResolverTypeWrapper<User>>> | null'.
[0]           Type 'Promise<AuthenticationError | User>' is not assignable to type 'Promise<User>'.
[0]             Type 'AuthenticationError | User' is not assignable to type 'User'.
[0]               Type 'AuthenticationError' has no properties in common with type 'User'.

What is the correct way to extend these generated resolver types from graphql-codegen in order to be able return errors that I'm recieving.

export const resolvers: Resolvers<ExtendedContext> = {
  Query: {
    me: async (_, __, context) => {
      if (!tokenIsvalid(context.userData)) {
        return new AuthenticationError("Invalid token"); <---- This is causing errors
      }
      const user = await getRepository(User).findOneOrFail(
        context.userData.userId
      );
      return user;
    },
  },
}