Any way to generate non-nullable fields?

[carlpaten]

Consider the following GraphQL:

mutation InsertShippingManifest {
  insert_shipping_manifest(objects: {status: PENDING}) {
    returning {
      id
    }
  }
}

shipment_manifest is backed by a regular old Postgres table with two columns. This should never fail, and if it does I have no intelligent way of handling it in the client.

Exporting my Hasura instance's GraphQL metadata and feeding it through dotansimha/graphql-code-generator using the plugin typescript-graphql-request I get the following:

export type InsertShippingManifestMutation = {__typename?: 'mutation_root'} & {
  insert_shipping_manifest?: Maybe<
    {__typename?: 'shipping_manifest_mutation_response'} & {
      returning: Array<{__typename?: 'shipping_manifest'} & Pick<Shipping_Manifest, 'id'>>;
    }
  >;
};

Note that insert_shipping_manifest is both optional and a Maybe. I don't want this for a mutation that "can't possibly fail".

Do I need to address this at the use site or is there a way to prevent this issue?