import { DirectiveDefinitionNode, SchemaDefinitionNode, SchemaExtensionNode } from 'graphql';
import { Config } from './merge-typedefs.js';
export declare const DEFAULT_OPERATION_TYPE_NAME_MAP: {
    readonly query: 'Query';
    readonly mutation: 'Mutation';
    readonly subscription: 'Subscription';
};
export declare function mergeSchemaDefs(node: SchemaDefinitionNode | SchemaExtensionNode, existingNode: SchemaDefinitionNode | SchemaExtensionNode | undefined, config?: Config, directives?: Record<string, DirectiveDefinitionNode>): SchemaDefinitionNode | SchemaExtensionNode;