/// <reference types="lodash" />
import { MappedDataSource } from "./MappedDataSource";
import * as t from "io-ts";
import { GraphQLObjectType, GraphQLFieldConfigMap, GraphQLInputObjectType, GraphQLInputFieldConfigMap, GraphQLOutputType } from "graphql";
import { MappedField } from "./MappedField";
/**
 * Utilities to create GraphQL type descriptors from various GRelDAL specific inputs
 */
/**
 * GraphQL type representing information about current page in a paginated query
 */
export declare const pageInfoType: (() => GraphQLObjectType<any, any>) & import("lodash").MemoizedFunction;
/**
 * Derive default GraphQL output type for specified data source
 */
export declare const deriveDefaultOutputType: <TSrc extends MappedDataSource<any>>(mappedDataSource: TSrc) => GraphQLObjectType<any, any>;
/**
 * Derive output type for a paginated query
 *
 * @param pageContainerName Name of page container type
 * @param pageName Name of page type
 * @param wrappedType GraphQL output type of the entity being queried
 */
export declare const derivePaginatedOutputType: (pageContainerName: string, pageName: string, wrappedType: GraphQLOutputType) => GraphQLObjectType<any, any>;
/**
 * Derive the default GraphQL input type for specified data source excluding associations
 */
export declare const deriveDefaultShallowInputType: <TSrc extends MappedDataSource<any>>(mappedDataSource: TSrc) => GraphQLInputObjectType;
/**
 * Derive the GraphQL Input type for union of fields from multiple specified data sources
 */
export declare const deriveDefaultShallowUnionInputType: <TSrc extends MappedDataSource<any>>(mappedDataSources: TSrc[]) => GraphQLInputObjectType;
/**
 * Derive the GraphQL output type for a data source including only the (primary and computed) fields and not the associations
 */
export declare const deriveDefaultShallowOutputType: <TSrc extends MappedDataSource<any>>(mappedDataSource: TSrc) => GraphQLObjectType<any, any>;
export declare const deriveDefaultIdOutputType: <TSrc extends MappedDataSource<any>>(source: TSrc) => GraphQLObjectType<any, any>;
/**
 * Build GraphQLInputFieldConfig dictionary from field definitions of a data source
 *
 * This is primarily useful for deriving GraphQL input type for a data source.
 */
export declare const mapInputFields: (dataSource: MappedDataSource<any>, result?: GraphQLInputFieldConfigMap) => GraphQLInputFieldConfigMap;
/**
 * Build GraphQLFieldConfig dictionary from field definitions of a data source.
 *
 * This is primarily useful for deriving GraphQL output type for a data source.
 */
export declare const mapOutputFields: (dataSource: MappedDataSource<any>, result?: GraphQLFieldConfigMap<any, any>, predicate?: (field: MappedField<MappedDataSource<any>, any>) => boolean) => GraphQLFieldConfigMap<any, any>;
/**
 * Build GraphQLFieldConfig dictionary from association definitions of a data source.
 *
 * This is primarily useful for deriving GraphQL output type for a data source.
 */
export declare const mapOutputAssociationFields: (dataSource: MappedDataSource<any>, result?: GraphQLFieldConfigMap<any, any>) => GraphQLFieldConfigMap<any, any>;
/**
 * Check if one io-ts type is a refinement of another
 */
export declare const isOrRefinedFrom: (type: t.Type<any, any, unknown>) => (targetType: t.Type<any, any, unknown>) => boolean;
/**
 * For singular operations, unwraps first result if result set is a collection
 * For non-singular operations, wraps result set into a collection (if not already)
 *
 * This utility liberates resolver authors from worrying about whether or not an operation is singular
 * when returning the results.
 */
export declare function normalizeResultsForSingularity(result: any, singular: boolean, paginated: boolean): any;