import { Types } from '@graphql-codegen/plugin-helpers';
/**
 * Automatically adds `__typename` selections to every object type in your GraphQL document except the root node in subscriptions since a single root field is expected (https://spec.graphql.org/draft/#sec-Single-root-field).
 * This is useful for GraphQL Clients such as Apollo Client or urql that need typename information for their cache to function.
 */
export declare const addTypenameSelectionDocumentTransform: Types.DocumentTransformObject;