/** @category Types */
import type { Maybe } from "../jsutils/Maybe.js";
import type { ObjMap } from "../jsutils/ObjMap.js";
import type { Path } from "../jsutils/Path.js";
import type { PromiseOrValue } from "../jsutils/PromiseOrValue.js";
import type { ConstValueNode, EnumTypeDefinitionNode, EnumTypeExtensionNode, EnumValueDefinitionNode, FieldDefinitionNode, FieldNode, FragmentDefinitionNode, InputObjectTypeDefinitionNode, InputObjectTypeExtensionNode, InputValueDefinitionNode, InterfaceTypeDefinitionNode, InterfaceTypeExtensionNode, ObjectTypeDefinitionNode, ObjectTypeExtensionNode, OperationDefinitionNode, ScalarTypeDefinitionNode, ScalarTypeExtensionNode, UnionTypeDefinitionNode, UnionTypeExtensionNode, ValueNode } from "../language/ast.js";
import type { GraphQLVariableSignature } from "../execution/getVariableSignature.js";
import type { VariableValues } from "../execution/values.js";
import type { GraphQLDirective } from "./directives.js";
import type { GraphQLSchema } from "./schema.js";
/** These are all of the possible kinds of types. */
export type GraphQLType = GraphQLNamedType | GraphQLWrappingType;
/**
 * Returns true when the value is any GraphQL type.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is any GraphQL type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { GraphQLList, GraphQLString, isType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   type Query {
 *     name: String
 *   }
 * `);
 *
 * isType(GraphQLString); // => true
 * isType(new GraphQLList(GraphQLString)); // => true
 * isType(schema.getType('Query')); // => true
 * isType('String'); // => false
 * ```
 */
export declare function isType(type: unknown): type is GraphQLType;
/**
 * Returns the value as a GraphQL type, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQL type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   type Query {
 *     name: String
 *   }
 * `);
 *
 * const queryType = assertType(schema.getType('Query'));
 *
 * queryType.toString(); // => 'Query'
 * assertType('Query'); // throws an error
 * ```
 */
export declare function assertType(type: unknown): GraphQLType;
/**
 * There are predicates for each kind of GraphQL type.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQLScalarType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isScalarType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   scalar DateTime
 *
 *   type Query {
 *     createdAt: DateTime
 *   }
 * `);
 *
 * isScalarType(schema.getType('DateTime')); // => true
 * isScalarType(schema.getType('Query')); // => false
 * ```
 */
export declare function isScalarType(type: unknown): type is GraphQLScalarType;
/**
 * Returns the value as a GraphQLScalarType, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQLScalarType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertScalarType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   scalar DateTime
 *
 *   type Query {
 *     createdAt: DateTime
 *   }
 * `);
 *
 * const dateTimeType = assertScalarType(schema.getType('DateTime'));
 *
 * dateTimeType.name; // => 'DateTime'
 * assertScalarType(schema.getType('Query')); // throws an error
 * ```
 */
export declare function assertScalarType(type: unknown): GraphQLScalarType;
/**
 * Returns true when the value is a GraphQLObjectType.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQLObjectType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isObjectType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   input ReviewInput {
 *     stars: Int!
 *   }
 *
 *   type User {
 *     name: String
 *   }
 *
 *   type Query {
 *     user: User
 *   }
 * `);
 *
 * isObjectType(schema.getType('User')); // => true
 * isObjectType(schema.getType('ReviewInput')); // => false
 * ```
 */
export declare function isObjectType(type: unknown): type is GraphQLObjectType;
/**
 * Returns the value as a GraphQLObjectType, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQLObjectType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertObjectType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   input ReviewInput {
 *     stars: Int!
 *   }
 *
 *   type User {
 *     name: String
 *   }
 *
 *   type Query {
 *     user: User
 *   }
 * `);
 *
 * const userType = assertObjectType(schema.getType('User'));
 *
 * Object.keys(userType.getFields()); // => ['name']
 * assertObjectType(schema.getType('ReviewInput')); // throws an error
 * ```
 */
export declare function assertObjectType(type: unknown): GraphQLObjectType;
/**
 * Returns true when the value is a resolved GraphQL field definition.
 * @param field - Value to inspect.
 * @returns True when the value is a GraphQLField.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isField } from 'graphql/type';
 *
 * const schema = buildSchema('type Query { greeting: String }');
 * const field = schema.getQueryType().getFields().greeting;
 *
 * isField(field); // => true
 * isField(schema.getQueryType()); // => false
 * ```
 */
export declare function isField(field: unknown): field is GraphQLField;
/**
 * Returns the value as a GraphQLField, or throws if it is not one.
 * @param field - Value to inspect.
 * @returns The value typed as a GraphQLField.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertField } from 'graphql/type';
 *
 * const schema = buildSchema('type Query { greeting: String }');
 * const field = assertField(schema.getQueryType().getFields().greeting);
 *
 * field.name; // => 'greeting'
 * assertField(schema.getQueryType()); // throws an error
 * ```
 */
export declare function assertField(field: unknown): GraphQLField;
/**
 * Returns true when the value is a resolved GraphQL argument definition.
 * @param arg - Value to inspect.
 * @returns True when the value is a GraphQLArgument.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isArgument } from 'graphql/type';
 *
 * const schema = buildSchema('type Query { greeting(name: String): String }');
 * const arg = schema.getQueryType().getFields().greeting.args[0];
 *
 * isArgument(arg); // => true
 * isArgument(schema.getQueryType()); // => false
 * ```
 */
export declare function isArgument(arg: unknown): arg is GraphQLArgument;
/**
 * Returns the value as a GraphQLArgument, or throws if it is not one.
 * @param arg - Value to inspect.
 * @returns The value typed as a GraphQLArgument.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertArgument } from 'graphql/type';
 *
 * const schema = buildSchema('type Query { greeting(name: String): String }');
 * const arg = assertArgument(schema.getQueryType().getFields().greeting.args[0]);
 *
 * arg.name; // => 'name'
 * assertArgument(schema.getQueryType()); // throws an error
 * ```
 */
export declare function assertArgument(arg: unknown): GraphQLArgument;
/**
 * Returns true when the value is a GraphQLInterfaceType.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQLInterfaceType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isInterfaceType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   interface Node {
 *     id: ID!
 *   }
 *
 *   type User implements Node {
 *     id: ID!
 *   }
 *
 *   type Query {
 *     node: Node
 *   }
 * `);
 *
 * isInterfaceType(schema.getType('Node')); // => true
 * isInterfaceType(schema.getType('User')); // => false
 * ```
 */
export declare function isInterfaceType(type: unknown): type is GraphQLInterfaceType;
/**
 * Returns the value as a GraphQLInterfaceType, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQLInterfaceType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertInterfaceType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   interface Node {
 *     id: ID!
 *   }
 *
 *   type User implements Node {
 *     id: ID!
 *   }
 *
 *   type Query {
 *     node: Node
 *   }
 * `);
 *
 * const nodeType = assertInterfaceType(schema.getType('Node'));
 *
 * nodeType.name; // => 'Node'
 * assertInterfaceType(schema.getType('User')); // throws an error
 * ```
 */
export declare function assertInterfaceType(type: unknown): GraphQLInterfaceType;
/**
 * Returns true when the value is a GraphQLUnionType.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQLUnionType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isUnionType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   type Photo {
 *     url: String!
 *   }
 *
 *   type Video {
 *     url: String!
 *   }
 *
 *   union Media = Photo | Video
 *
 *   type Query {
 *     media: [Media]
 *   }
 * `);
 *
 * isUnionType(schema.getType('Media')); // => true
 * isUnionType(schema.getType('Photo')); // => false
 * ```
 */
export declare function isUnionType(type: unknown): type is GraphQLUnionType;
/**
 * Returns the value as a GraphQLUnionType, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQLUnionType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertUnionType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   type Photo {
 *     url: String!
 *   }
 *
 *   type Video {
 *     url: String!
 *   }
 *
 *   union Media = Photo | Video
 *
 *   type Query {
 *     media: [Media]
 *   }
 * `);
 *
 * const mediaType = assertUnionType(schema.getType('Media'));
 *
 * mediaType.getTypes().map((type) => type.name); // => ['Photo', 'Video']
 * assertUnionType(schema.getType('Photo')); // throws an error
 * ```
 */
export declare function assertUnionType(type: unknown): GraphQLUnionType;
/**
 * Returns true when the value is a GraphQLEnumType.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQLEnumType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isEnumType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   enum Episode {
 *     NEW_HOPE
 *     EMPIRE
 *   }
 *
 *   type Query {
 *     favoriteEpisode: Episode
 *   }
 * `);
 *
 * isEnumType(schema.getType('Episode')); // => true
 * isEnumType(schema.getType('Query')); // => false
 * ```
 */
export declare function isEnumType(type: unknown): type is GraphQLEnumType;
/**
 * Returns the value as a GraphQLEnumType, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQLEnumType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertEnumType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   enum Episode {
 *     NEW_HOPE
 *     EMPIRE
 *   }
 *
 *   type Query {
 *     favoriteEpisode: Episode
 *   }
 * `);
 *
 * const episodeType = assertEnumType(schema.getType('Episode'));
 *
 * episodeType.getValues().map((value) => value.name); // => ['NEW_HOPE', 'EMPIRE']
 * assertEnumType(schema.getType('Query')); // throws an error
 * ```
 */
export declare function assertEnumType(type: unknown): GraphQLEnumType;
/**
 * Returns true when the value is a resolved GraphQL enum value definition.
 * @param value - Value to inspect.
 * @returns True when the value is a GraphQLEnumValue.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertEnumType, isEnumValue } from 'graphql/type';
 *
 * const schema = buildSchema(
 *   'enum Episode { NEW_HOPE } type Query { episode: Episode }',
 * );
 * const enumValue = assertEnumType(schema.getType('Episode')).getValues()[0];
 *
 * isEnumValue(enumValue); // => true
 * isEnumValue(schema.getType('Episode')); // => false
 * ```
 */
export declare function isEnumValue(value: unknown): value is GraphQLEnumValue;
/**
 * Returns the value as a GraphQLEnumValue, or throws if it is not one.
 * @param value - Value to inspect.
 * @returns The value typed as a GraphQLEnumValue.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertEnumType, assertEnumValue } from 'graphql/type';
 *
 * const schema = buildSchema(
 *   'enum Episode { NEW_HOPE } type Query { episode: Episode }',
 * );
 * const enumValue = assertEnumValue(
 *   assertEnumType(schema.getType('Episode')).getValues()[0],
 * );
 *
 * enumValue.name; // => 'NEW_HOPE'
 * assertEnumValue(schema.getType('Episode')); // throws an error
 * ```
 */
export declare function assertEnumValue(value: unknown): GraphQLEnumValue;
/**
 * Returns true when the value is a GraphQLInputObjectType.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQLInputObjectType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isInputObjectType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   input ReviewInput {
 *     stars: Int!
 *   }
 *
 *   type Review {
 *     stars: Int!
 *   }
 *
 *   type Query {
 *     review(input: ReviewInput): Review
 *   }
 * `);
 *
 * isInputObjectType(schema.getType('ReviewInput')); // => true
 * isInputObjectType(schema.getType('Review')); // => false
 * ```
 */
export declare function isInputObjectType(type: unknown): type is GraphQLInputObjectType;
/**
 * Returns the value as a GraphQLInputObjectType, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQLInputObjectType.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertInputObjectType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   input ReviewInput {
 *     stars: Int!
 *   }
 *
 *   type Review {
 *     stars: Int!
 *   }
 *
 *   type Query {
 *     review(input: ReviewInput): Review
 *   }
 * `);
 *
 * const inputType = assertInputObjectType(schema.getType('ReviewInput'));
 *
 * Object.keys(inputType.getFields()); // => ['stars']
 * assertInputObjectType(schema.getType('Review')); // throws an error
 * ```
 */
export declare function assertInputObjectType(type: unknown): GraphQLInputObjectType;
/**
 * Returns true when the value is a resolved GraphQL input field definition.
 * @param field - Value to inspect.
 * @returns True when the value is a GraphQLInputField.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertInputObjectType, isInputField } from 'graphql/type';
 *
 * const schema = buildSchema(
 *   'input ReviewInput { stars: Int } type Query { ok: Boolean }',
 * );
 * const inputField = assertInputObjectType(
 *   schema.getType('ReviewInput'),
 * ).getFields().stars;
 *
 * isInputField(inputField); // => true
 * isInputField(schema.getQueryType()); // => false
 * ```
 */
export declare function isInputField(field: unknown): field is GraphQLInputField;
/**
 * Returns the value as a GraphQLInputField, or throws if it is not one.
 * @param field - Value to inspect.
 * @returns The value typed as a GraphQLInputField.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertInputField, assertInputObjectType } from 'graphql/type';
 *
 * const schema = buildSchema(
 *   'input ReviewInput { stars: Int } type Query { ok: Boolean }',
 * );
 * const inputField = assertInputField(
 *   assertInputObjectType(schema.getType('ReviewInput')).getFields().stars,
 * );
 *
 * inputField.name; // => 'stars'
 * assertInputField(schema.getQueryType()); // throws an error
 * ```
 */
export declare function assertInputField(field: unknown): GraphQLInputField;
/**
 * Returns true when the value is a GraphQLList.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQLList.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { GraphQLList, GraphQLString, isListType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   type Query {
 *     tags: [String!]!
 *   }
 * `);
 *
 * const tagsField = schema.getQueryType()?.getFields().tags;
 *
 * isListType(new GraphQLList(GraphQLString)); // => true
 * isListType(GraphQLString); // => false
 * isListType(tagsField?.type); // => false
 * ```
 */
export declare function isListType(type: GraphQLInputType): type is GraphQLList<GraphQLInputType>;
/**
 * Returns true when the output type is a GraphQLList.
 * @param type - The GraphQL output type to inspect.
 * @returns True when the output type is a list type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { getNullableType, isListType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   type Query {
 *     tags: [String!]!
 *   }
 * `);
 *
 * const tagsField = schema.getQueryType()?.getFields().tags;
 * const nullableTagsType = getNullableType(tagsField?.type);
 *
 * isListType(nullableTagsType); // => true
 * ```
 */
export declare function isListType(type: GraphQLOutputType): type is GraphQLList<GraphQLOutputType>;
/**
 * Returns true when the value is a GraphQLList.
 * @param type - The value to inspect.
 * @returns True when the value is a list type.
 * @example
 * ```ts
 * import { isListType } from 'graphql/type';
 *
 * isListType('[String]'); // => false
 * isListType(null); // => false
 * ```
 */
export declare function isListType(type: unknown): type is GraphQLList<GraphQLType>;
/**
 * Returns the value as a GraphQLList, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQLList.
 * @example
 * ```ts
 * import { GraphQLList, GraphQLString, assertListType } from 'graphql/type';
 *
 * const listType = assertListType(new GraphQLList(GraphQLString));
 *
 * listType.ofType; // => GraphQLString
 * assertListType(GraphQLString); // throws an error
 * ```
 */
export declare function assertListType(type: unknown): GraphQLList<GraphQLType>;
/**
 * Returns true when the value is a GraphQLNonNull.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQLNonNull.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { GraphQLNonNull, GraphQLString, isNonNullType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   type Query {
 *     name: String!
 *     nickname: String
 *   }
 * `);
 *
 * const fields = schema.getQueryType()?.getFields();
 *
 * isNonNullType(new GraphQLNonNull(GraphQLString)); // => true
 * isNonNullType(fields?.name.type); // => true
 * isNonNullType(fields?.nickname.type); // => false
 * ```
 */
export declare function isNonNullType(type: GraphQLInputType): type is GraphQLNonNull<GraphQLNullableInputType>;
/**
 * Returns true when the output type is a GraphQLNonNull.
 * @param type - The GraphQL output type to inspect.
 * @returns True when the output type is a non-null type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isNonNullType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   type Query {
 *     name: String!
 *     nickname: String
 *   }
 * `);
 *
 * const fields = schema.getQueryType()?.getFields();
 *
 * isNonNullType(fields?.name.type); // => true
 * isNonNullType(fields?.nickname.type); // => false
 * ```
 */
export declare function isNonNullType(type: GraphQLOutputType): type is GraphQLNonNull<GraphQLNullableOutputType>;
/**
 * Returns true when the value is a GraphQLNonNull.
 * @param type - The value to inspect.
 * @returns True when the value is a non-null type.
 * @example
 * ```ts
 * import { isNonNullType } from 'graphql/type';
 *
 * isNonNullType('String!'); // => false
 * isNonNullType(null); // => false
 * ```
 */
export declare function isNonNullType(type: unknown): type is GraphQLNonNull<GraphQLNullableType>;
/**
 * Returns the value as a GraphQLNonNull, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQLNonNull.
 * @example
 * ```ts
 * import { GraphQLNonNull, GraphQLString, assertNonNullType } from 'graphql/type';
 *
 * const nonNullType = assertNonNullType(new GraphQLNonNull(GraphQLString));
 *
 * nonNullType.ofType; // => GraphQLString
 * assertNonNullType(GraphQLString); // throws an error
 * ```
 */
export declare function assertNonNullType(type: unknown): GraphQLNonNull<GraphQLNullableType>;
/** These types may be used as input types for arguments and directives. */
export type GraphQLNullableInputType = GraphQLNamedInputType | GraphQLList<GraphQLInputType>;
/** These types may be used as input types for arguments and directives. */
export type GraphQLInputType = GraphQLNullableInputType | GraphQLNonNull<GraphQLNullableInputType>;
/**
 * Returns true when the value can be used as a GraphQL input type.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value can be used as a GraphQL input type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isInputType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   input ReviewInput {
 *     stars: Int!
 *   }
 *
 *   type Review {
 *     stars: Int!
 *   }
 *
 *   type Query {
 *     review(input: ReviewInput): Review
 *   }
 * `);
 *
 * isInputType(schema.getType('ReviewInput')); // => true
 * isInputType(schema.getType('Review')); // => false
 * ```
 */
export declare function isInputType(type: unknown): type is GraphQLInputType;
/**
 * Returns the value as a GraphQL input type, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQL input type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertInputType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   input ReviewInput {
 *     stars: Int!
 *   }
 *
 *   type Review {
 *     stars: Int!
 *   }
 *
 *   type Query {
 *     review(input: ReviewInput): Review
 *   }
 * `);
 *
 * const inputType = assertInputType(schema.getType('ReviewInput'));
 *
 * inputType.toString(); // => 'ReviewInput'
 * assertInputType(schema.getType('Review')); // throws an error
 * ```
 */
export declare function assertInputType(type: unknown): GraphQLInputType;
/** These types may be used as output types as the result of fields. */
export type GraphQLNullableOutputType = GraphQLNamedOutputType | GraphQLList<GraphQLOutputType>;
/** These types may be used as output types as the result of fields. */
export type GraphQLOutputType = GraphQLNullableOutputType | GraphQLNonNull<GraphQLNullableOutputType>;
/**
 * Returns true when the value can be used as a GraphQL output type.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value can be used as a GraphQL output type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isOutputType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   input ReviewInput {
 *     stars: Int!
 *   }
 *
 *   type Review {
 *     stars: Int!
 *   }
 *
 *   type Query {
 *     review(input: ReviewInput): Review
 *   }
 * `);
 *
 * isOutputType(schema.getType('Review')); // => true
 * isOutputType(schema.getType('ReviewInput')); // => false
 * ```
 */
export declare function isOutputType(type: unknown): type is GraphQLOutputType;
/**
 * Returns the value as a GraphQL output type, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQL output type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertOutputType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   input ReviewInput {
 *     stars: Int!
 *   }
 *
 *   type Review {
 *     stars: Int!
 *   }
 *
 *   type Query {
 *     review(input: ReviewInput): Review
 *   }
 * `);
 *
 * const outputType = assertOutputType(schema.getType('Review'));
 *
 * outputType.toString(); // => 'Review'
 * assertOutputType(schema.getType('ReviewInput')); // throws an error
 * ```
 */
export declare function assertOutputType(type: unknown): GraphQLOutputType;
/** These types may describe types which may be leaf values. */
export type GraphQLLeafType = GraphQLScalarType | GraphQLEnumType;
/**
 * Returns true when the value is a GraphQL scalar or enum type.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQL scalar or enum type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isLeafType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   enum Episode {
 *     NEW_HOPE
 *   }
 *
 *   type Review {
 *     stars: Int!
 *   }
 *
 *   type Query {
 *     episode: Episode
 *     review: Review
 *   }
 * `);
 *
 * isLeafType(schema.getType('Episode')); // => true
 * isLeafType(schema.getType('String')); // => true
 * isLeafType(schema.getType('Review')); // => false
 * ```
 */
export declare function isLeafType(type: unknown): type is GraphQLLeafType;
/**
 * Returns the value as a GraphQL leaf type, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQL leaf type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertLeafType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   enum Episode {
 *     NEW_HOPE
 *   }
 *
 *   type Review {
 *     stars: Int!
 *   }
 *
 *   type Query {
 *     episode: Episode
 *     review: Review
 *   }
 * `);
 *
 * const episodeType = assertLeafType(schema.getType('Episode'));
 *
 * episodeType.toString(); // => 'Episode'
 * assertLeafType(schema.getType('Review')); // throws an error
 * ```
 */
export declare function assertLeafType(type: unknown): GraphQLLeafType;
/** These types may describe the parent context of a selection set. */
export type GraphQLCompositeType = GraphQLObjectType | GraphQLInterfaceType | GraphQLUnionType;
/**
 * Returns true when the value is a GraphQL object, interface, or union type.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQL object, interface, or union type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isCompositeType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   interface Node {
 *     id: ID!
 *   }
 *
 *   type User implements Node {
 *     id: ID!
 *   }
 *
 *   union SearchResult = User
 *
 *   type Query {
 *     node: Node
 *     search: [SearchResult]
 *   }
 * `);
 *
 * isCompositeType(schema.getType('User')); // => true
 * isCompositeType(schema.getType('Node')); // => true
 * isCompositeType(schema.getType('SearchResult')); // => true
 * isCompositeType(schema.getType('String')); // => false
 * ```
 */
export declare function isCompositeType(type: unknown): type is GraphQLCompositeType;
/**
 * Returns the value as a GraphQL composite type, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQL composite type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertCompositeType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   interface Node {
 *     id: ID!
 *   }
 *
 *   type User implements Node {
 *     id: ID!
 *   }
 *
 *   type Query {
 *     node: Node
 *   }
 * `);
 *
 * const userType = assertCompositeType(schema.getType('User'));
 *
 * userType.toString(); // => 'User'
 * assertCompositeType(schema.getType('String')); // throws an error
 * ```
 */
export declare function assertCompositeType(type: unknown): GraphQLCompositeType;
/** These types may describe the parent context of a selection set. */
export type GraphQLAbstractType = GraphQLInterfaceType | GraphQLUnionType;
/**
 * Returns true when the value is a GraphQL interface or union type.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQL interface or union type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { isAbstractType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   interface Node {
 *     id: ID!
 *   }
 *
 *   type User implements Node {
 *     id: ID!
 *   }
 *
 *   union SearchResult = User
 *
 *   type Query {
 *     node: Node
 *     search: [SearchResult]
 *   }
 * `);
 *
 * isAbstractType(schema.getType('Node')); // => true
 * isAbstractType(schema.getType('SearchResult')); // => true
 * isAbstractType(schema.getType('User')); // => false
 * ```
 */
export declare function isAbstractType(type: unknown): type is GraphQLAbstractType;
/**
 * Returns the value as a GraphQL abstract type, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQL abstract type.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { assertAbstractType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   interface Node {
 *     id: ID!
 *   }
 *
 *   type User implements Node {
 *     id: ID!
 *   }
 *
 *   type Query {
 *     node: Node
 *   }
 * `);
 *
 * const nodeType = assertAbstractType(schema.getType('Node'));
 *
 * nodeType.toString(); // => 'Node'
 * assertAbstractType(schema.getType('User')); // throws an error
 * ```
 */
export declare function assertAbstractType(type: unknown): GraphQLAbstractType;
/**
 * List Type Wrapper
 *
 * A list is a wrapping type which points to another type.
 * Lists are often created within the context of defining the fields of
 * an object type.
 * @typeParam T - The GraphQL type wrapped by this list type.
 * @example
 * ```ts
 * const PersonType = new GraphQLObjectType({
 *   name: 'Person',
 *   fields: () => ({
 *     parents: { type: new GraphQLList(PersonType) },
 *     children: { type: new GraphQLList(PersonType) },
 *   }),
 * });
 * ```
 */
export declare class GraphQLList<T extends GraphQLType> implements GraphQLSchemaElement {
    /** The type wrapped by this list or non-null type. */
    readonly ofType: T;
    private readonly __GraphQLListTypeBrand;
    /**
     * Creates a GraphQLList instance.
     * @param ofType - The type to wrap.
     * @example
     * ```ts
     * import { GraphQLList, GraphQLString } from 'graphql/type';
     *
     * const stringList = new GraphQLList(GraphQLString);
     *
     * stringList.ofType; // => GraphQLString
     * String(stringList); // => '[String]'
     * ```
     */
    constructor(ofType: T);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns this wrapping type as a GraphQL type-reference string.
     * @returns The GraphQL type-reference string.
     * @example
     * ```ts
     * import { GraphQLList, GraphQLNonNull, GraphQLString } from 'graphql/type';
     *
     * const stringList = new GraphQLList(GraphQLString);
     * const requiredStringList = new GraphQLList(new GraphQLNonNull(GraphQLString));
     *
     * stringList.toString(); // => '[String]'
     * requiredStringList.toString(); // => '[String!]'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The JSON-serializable representation.
     * @example
     * ```ts
     * import { GraphQLList, GraphQLString } from 'graphql/type';
     *
     * const stringList = new GraphQLList(GraphQLString);
     *
     * stringList.toJSON(); // => '[String]'
     * JSON.stringify({ type: stringList }); // => '{"type":"[String]"}'
     * ```
     */
    toJSON(): string;
}
/**
 * Non-Null Type Wrapper
 *
 * A non-null is a wrapping type which points to another type.
 * Non-null types enforce that their values are never null and can ensure
 * an error is raised if this ever occurs during a request. It is useful for
 * fields which you can make a strong guarantee on non-nullability, for example
 * usually the id field of a database row will never be null.
 * @typeParam T - The nullable GraphQL type wrapped by this non-null type.
 * @example
 * ```ts
 * const RowType = new GraphQLObjectType({
 *   name: 'Row',
 *   fields: () => ({
 *     id: { type: new GraphQLNonNull(GraphQLString) },
 *   }),
 * });
 * ```
 *
 * Note: the enforcement of non-nullability occurs within the executor.
 */
export declare class GraphQLNonNull<T extends GraphQLNullableType> implements GraphQLSchemaElement {
    /** The type wrapped by this list or non-null type. */
    readonly ofType: T;
    private readonly __GraphQLNonNullTypeBrand;
    /**
     * Creates a GraphQLNonNull instance.
     * @param ofType - The type to wrap.
     * @example
     * ```ts
     * import { GraphQLNonNull, GraphQLString } from 'graphql/type';
     *
     * const requiredString = new GraphQLNonNull(GraphQLString);
     *
     * requiredString.ofType; // => GraphQLString
     * String(requiredString); // => 'String!'
     * ```
     */
    constructor(ofType: T);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns this wrapping type as a GraphQL type-reference string.
     * @returns The GraphQL type-reference string.
     * @example
     * ```ts
     * import { GraphQLList, GraphQLNonNull, GraphQLString } from 'graphql/type';
     *
     * const requiredString = new GraphQLNonNull(GraphQLString);
     * const requiredStringList = new GraphQLNonNull(new GraphQLList(GraphQLString));
     *
     * requiredString.toString(); // => 'String!'
     * requiredStringList.toString(); // => '[String]!'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The JSON-serializable representation.
     * @example
     * ```ts
     * import { GraphQLNonNull, GraphQLString } from 'graphql/type';
     *
     * const requiredString = new GraphQLNonNull(GraphQLString);
     *
     * requiredString.toJSON(); // => 'String!'
     * JSON.stringify({ type: requiredString }); // => '{"type":"String!"}'
     * ```
     */
    toJSON(): string;
}
/** These types wrap and modify other types */
export type GraphQLWrappingType = GraphQLList<GraphQLType> | GraphQLNonNull<GraphQLNullableType>;
/**
 * Returns true when the value is a GraphQL list or non-null wrapper type.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQL list or non-null wrapper type.
 * @example
 * ```ts
 * import {
 *   GraphQLList,
 *   GraphQLNonNull,
 *   GraphQLString,
 *   isWrappingType,
 * } from 'graphql/type';
 *
 * isWrappingType(new GraphQLList(GraphQLString)); // => true
 * isWrappingType(new GraphQLNonNull(GraphQLString)); // => true
 * isWrappingType(GraphQLString); // => false
 * ```
 */
export declare function isWrappingType(type: unknown): type is GraphQLWrappingType;
/**
 * Returns the value as a GraphQL wrapping type, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQL wrapping type.
 * @example
 * ```ts
 * import { GraphQLList, GraphQLString, assertWrappingType } from 'graphql/type';
 *
 * const wrappingType = assertWrappingType(new GraphQLList(GraphQLString));
 *
 * wrappingType.toString(); // => '[String]'
 * assertWrappingType(GraphQLString); // throws an error
 * ```
 */
export declare function assertWrappingType(type: unknown): GraphQLWrappingType;
/** These types can all accept null as a value. */
export type GraphQLNullableType = GraphQLNamedType | GraphQLList<GraphQLType>;
/**
 * Returns true when the value is a GraphQL type that can accept null.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQL type that can accept null.
 * @example
 * ```ts
 * import { GraphQLNonNull, GraphQLString, isNullableType } from 'graphql/type';
 *
 * isNullableType(GraphQLString); // => true
 * isNullableType(new GraphQLNonNull(GraphQLString)); // => false
 * isNullableType(null); // => false
 * ```
 */
export declare function isNullableType(type: unknown): type is GraphQLNullableType;
/**
 * Returns the value as a nullable GraphQL type, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a nullable GraphQL type.
 * @example
 * ```ts
 * import {
 *   GraphQLNonNull,
 *   GraphQLString,
 *   assertNullableType,
 * } from 'graphql/type';
 *
 * const nullableType = assertNullableType(GraphQLString);
 *
 * nullableType; // => GraphQLString
 * assertNullableType(new GraphQLNonNull(GraphQLString)); // throws an error
 * ```
 */
export declare function assertNullableType(type: unknown): GraphQLNullableType;
/**
 * Returns the nullable type.
 * @param type - The GraphQL type to inspect.
 * @returns The nullable type after removing one non-null wrapper, if present.
 * @example
 * ```ts
 * import { getNullableType } from 'graphql/type';
 *
 * getNullableType(null); // => undefined
 * getNullableType(undefined); // => undefined
 * ```
 */
export declare function getNullableType(type: undefined | null): void;
/**
 * Returns the nullable type after removing one non-null wrapper.
 * @param type - A nullable type or non-null wrapper.
 * @returns The nullable type after removing one non-null wrapper, if present.
 * @typeParam T - The nullable GraphQL type returned after removing one non-null wrapper.
 * @example
 * ```ts
 * import {
 *   GraphQLList,
 *   GraphQLNonNull,
 *   GraphQLString,
 *   getNullableType,
 * } from 'graphql/type';
 *
 * const requiredString = new GraphQLNonNull(GraphQLString);
 * const stringList = new GraphQLList(GraphQLString);
 *
 * getNullableType(requiredString); // => GraphQLString
 * getNullableType(stringList); // => stringList
 * ```
 */
export declare function getNullableType<T extends GraphQLNullableType>(type: T | GraphQLNonNull<T>): T;
/**
 * Returns the nullable type after removing one non-null wrapper.
 * @param type - The GraphQL type to inspect.
 * @returns The nullable type after removing one non-null wrapper, if present.
 * @example
 * ```ts
 * import {
 *   GraphQLList,
 *   GraphQLNonNull,
 *   GraphQLString,
 *   getNullableType,
 * } from 'graphql/type';
 *
 * const requiredStringList = new GraphQLNonNull(new GraphQLList(GraphQLString));
 *
 * getNullableType(requiredStringList).toString(); // => '[String]'
 * getNullableType(GraphQLString); // => GraphQLString
 * ```
 */
export declare function getNullableType(type: Maybe<GraphQLType>): GraphQLNullableType | undefined;
/** These named types do not include modifiers like List or NonNull. */
export type GraphQLNamedType = GraphQLNamedInputType | GraphQLNamedOutputType;
/** A named GraphQL type that can be used as an input type. */
export type GraphQLNamedInputType = GraphQLScalarType | GraphQLEnumType | GraphQLInputObjectType;
/** A named GraphQL type that can be used as an output type. */
export type GraphQLNamedOutputType = GraphQLScalarType | GraphQLObjectType | GraphQLInterfaceType | GraphQLUnionType | GraphQLEnumType;
/**
 * Returns true when the value is a GraphQL named type.
 * @param type - The GraphQL type to inspect.
 * @returns True when the value is a GraphQL named type.
 * @example
 * ```ts
 * import { GraphQLList, GraphQLString, isNamedType } from 'graphql/type';
 *
 * isNamedType(GraphQLString); // => true
 * isNamedType(new GraphQLList(GraphQLString)); // => false
 * isNamedType(null); // => false
 * ```
 */
export declare function isNamedType(type: unknown): type is GraphQLNamedType;
/**
 * Returns the value as a GraphQL named type, or throws if it is not one.
 * @param type - The GraphQL type to inspect.
 * @returns The value typed as a GraphQL named type.
 * @example
 * ```ts
 * import { GraphQLList, GraphQLString, assertNamedType } from 'graphql/type';
 *
 * const namedType = assertNamedType(GraphQLString);
 *
 * namedType.name; // => 'String'
 * assertNamedType(new GraphQLList(GraphQLString)); // throws an error
 * ```
 */
export declare function assertNamedType(type: unknown): GraphQLNamedType;
/**
 * Returns the named type.
 * @param type - The GraphQL type to inspect.
 * @returns The named type after unwrapping all list and non-null wrappers.
 * @example
 * ```ts
 * import { getNamedType } from 'graphql/type';
 *
 * getNamedType(null); // => undefined
 * getNamedType(undefined); // => undefined
 * ```
 */
export declare function getNamedType(type: undefined | null): void;
/**
 * Returns the named input type after unwrapping all list and non-null wrappers.
 * @param type - The GraphQL input type to inspect.
 * @returns The named input type after unwrapping all wrappers.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { getNamedType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   input ReviewInput {
 *     stars: Int!
 *   }
 *
 *   type Query {
 *     review(input: [ReviewInput!]!): Boolean
 *   }
 * `);
 *
 * const inputArg = schema.getQueryType()?.getFields().review.args[0];
 *
 * getNamedType(inputArg?.type).toString(); // => 'ReviewInput'
 * ```
 */
export declare function getNamedType(type: GraphQLInputType): GraphQLNamedInputType;
/**
 * Returns the named output type after unwrapping all list and non-null wrappers.
 * @param type - The GraphQL output type to inspect.
 * @returns The named output type after unwrapping all wrappers.
 * @example
 * ```ts
 * import { buildSchema } from 'graphql/utilities';
 * import { getNamedType } from 'graphql/type';
 *
 * const schema = buildSchema(`
 *   type User {
 *     name: String
 *   }
 *
 *   type Query {
 *     users: [User!]!
 *   }
 * `);
 *
 * const usersField = schema.getQueryType()?.getFields().users;
 *
 * getNamedType(usersField?.type).toString(); // => 'User'
 * ```
 */
export declare function getNamedType(type: GraphQLOutputType): GraphQLNamedOutputType;
/**
 * Returns the named type after unwrapping all list and non-null wrappers.
 * @param type - The GraphQL type to inspect.
 * @returns The named type after unwrapping all wrappers.
 * @example
 * ```ts
 * import {
 *   GraphQLList,
 *   GraphQLNonNull,
 *   GraphQLString,
 *   getNamedType,
 * } from 'graphql/type';
 *
 * const nestedType = new GraphQLNonNull(
 *   new GraphQLList(new GraphQLNonNull(GraphQLString)),
 * );
 *
 * getNamedType(nestedType); // => GraphQLString
 * ```
 */
export declare function getNamedType(type: GraphQLType): GraphQLNamedType;
/**
 * Returns the named type after unwrapping all list and non-null wrappers.
 * @param type - The GraphQL type to inspect.
 * @returns The named type after unwrapping all wrappers, or undefined for nullish input.
 * @example
 * ```ts
 * import { GraphQLList, GraphQLString, getNamedType } from 'graphql/type';
 *
 * getNamedType(new GraphQLList(GraphQLString)); // => GraphQLString
 * getNamedType(undefined); // => undefined
 * ```
 */
export declare function getNamedType(type: Maybe<GraphQLType>): GraphQLNamedType | undefined;
/**
 * An interface for all Schema Elements.
 *
 * @internal
 */
export interface GraphQLSchemaElement {
    toString: () => string;
    toJSON: () => string;
}
/**
 * Used while defining GraphQL types to allow for circular references in
 * otherwise immutable type definitions.
 * @typeParam T - The element type returned by the thunk or array.
 */
export type ThunkReadonlyArray<T> = (() => ReadonlyArray<T>) | ReadonlyArray<T>;
/**
 * A thunk that resolves to an object map.
 * @typeParam T - Value type stored in the object map.
 */
export type ThunkObjMap<T> = (() => ObjMap<T>) | ObjMap<T>;
/**
 * Resolves a thunked readonly array.
 * @param thunk - The thunk or value to resolve.
 * @returns The resolved readonly array.
 * @typeParam T - The element type resolved from the thunk or array.
 * @example
 * ```ts
 * import { GraphQLString, resolveReadonlyArrayThunk } from 'graphql/type';
 *
 * const lazyFields = resolveReadonlyArrayThunk(() => [GraphQLString]);
 * const fields = resolveReadonlyArrayThunk([GraphQLString]);
 *
 * lazyFields; // => [GraphQLString]
 * fields; // => [GraphQLString]
 * ```
 */
export declare function resolveReadonlyArrayThunk<T>(thunk: ThunkReadonlyArray<T>): ReadonlyArray<T>;
/**
 * Resolves a thunked object map.
 * @param thunk - The thunk or value to resolve.
 * @returns The resolved object map.
 * @typeParam T - The object-map value type resolved from the thunk or map.
 * @example
 * ```ts
 * import { GraphQLString, resolveObjMapThunk } from 'graphql/type';
 *
 * const lazyFields = resolveObjMapThunk(() => ({ name: GraphQLString }));
 * const fields = resolveObjMapThunk({ name: GraphQLString });
 *
 * lazyFields.name; // => GraphQLString
 * fields.name; // => GraphQLString
 * ```
 */
export declare function resolveObjMapThunk<T>(thunk: ThunkObjMap<T>): ObjMap<T>;
/**
 * Custom extensions
 * @remarks
 * Use a unique identifier name for your extension, for example the name of
 * your library or project. Do not use a shortened identifier as this increases
 * the risk of conflicts. We recommend you add at most one extension field,
 * an object which can contain all the values you need.
 */
export interface GraphQLScalarTypeExtensions {
    [attributeName: string | symbol]: unknown;
}
/**
 * Scalar Type Definition
 *
 * Scalar types define the leaf values of a GraphQL response and the input
 * values accepted by arguments and input object fields. A scalar type has a
 * name and coercion functions that validate and convert runtime values and
 * GraphQL literals.
 *
 * If a type's coerceOutputValue function returns `null` or does not return a
 * value (i.e. it returns `undefined`) then an error will be raised and a
 * `null` value will be returned in the response. Prefer validating inputs
 * before execution so clients receive input diagnostics before result coercion
 * fails.
 * Custom scalar behavior is defined via the following functions:
 *
 *  - coerceOutputValue(value): Implements "Result Coercion". Given an internal value,
 *    produces an external value valid for this type. Returns undefined or
 *    throws an error to indicate invalid values.
 *
 *  - coerceInputValue(value): Implements "Input Coercion" for values. Given an
 *    external value (for example, variable values), produces an internal value
 *    valid for this type. Returns undefined or throws an error to indicate
 *    invalid values.
 *
 *  - coerceInputLiteral(ast): Implements "Input Coercion" for constant literals.
 *    Given a GraphQL literal (AST) (for example, an argument value), produces
 *    an internal value valid for this type. Returns undefined or throws an
 *    error to indicate invalid values.
 *
 *  - valueToLiteral(value): Converts an external value to a GraphQL
 *    literal (AST). Returns undefined or throws an error to indicate
 *    invalid values.
 *
 *  Deprecated, to be removed in v18:
 *
 *  - serialize(value): Implements "Result Coercion". Renamed to
 *    `coerceOutputValue()`.
 *
 *  - parseValue(value): Implements "Input Coercion" for values. Renamed to
 *    `coerceInputValue()`.
 *
 *  - parseLiteral(ast): Implements "Input Coercion" for literals including
 *    non-specified replacement of variables embedded within complex scalars.
 *    Replaced by the combination of the `replaceVariables()` utility and the
 *    `coerceInputLiteral()` method.
 * @typeParam TInternal - Internal runtime representation for this scalar.
 * @typeParam TExternal - External representation accepted from or returned to callers.
 * @example
 * ```ts
 * import { GraphQLScalarType, Kind } from 'graphql';
 *
 * const ensureOdd = (value) => {
 *   if (!Number.isFinite(value)) {
 *     throw new Error(
 *       `Scalar "Odd" cannot represent "${value}" since it is not a finite number.`,
 *     );
 *   }
 *
 *   if (value % 2 === 0) {
 *     throw new Error(
 *       `Scalar "Odd" cannot represent "${value}" since it is even.`,
 *     );
 *   }
 *
 *   return value;
 * };
 *
 * const OddType = new GraphQLScalarType({
 *   name: 'Odd',
 *   coerceOutputValue: (value) => {
 *     return ensureOdd(value);
 *   },
 *   coerceInputValue: (value) => {
 *     return ensureOdd(value);
 *   },
 *   valueToLiteral: (value) => {
 *     return { kind: Kind.INT, value: String(ensureOdd(value)) };
 *   },
 * });
 * ```
 */
export declare class GraphQLScalarType<TInternal = unknown, TExternal = TInternal> implements GraphQLSchemaElement {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description: Maybe<string>;
    /** URL identifying the behavior specified for this custom scalar. */
    specifiedByURL: Maybe<string>;
    /**
     * Deprecated legacy serializer used to convert internal values for response
     * output. Use `coerceOutputValue()` instead.
     * @deprecated use `coerceOutputValue()` instead, `serialize()` will be removed in v18
     */
    serialize: GraphQLScalarSerializer<TExternal>;
    /**
     * Deprecated legacy parser used to convert externally provided input values.
     * Use `coerceInputValue()` instead.
     * @deprecated use `coerceInputValue()` instead, `parseValue()` will be removed in v18
     */
    parseValue: GraphQLScalarValueParser<TInternal>;
    /**
     * Deprecated legacy parser used to convert externally provided input
     * literals. Use `replaceVariables()` and `coerceInputLiteral()` instead.
     * @deprecated use `replaceVariables()` and `coerceInputLiteral()` instead, `parseLiteral()` will be removed in v18
     */
    parseLiteral: GraphQLScalarLiteralParser<TInternal>;
    /** Coercer used to convert internal scalar values for response output. */
    coerceOutputValue: GraphQLScalarOutputValueCoercer<TExternal>;
    /** Coercer used to convert externally provided scalar input values. */
    coerceInputValue: GraphQLScalarInputValueCoercer<TInternal>;
    /** Coercer used to convert GraphQL scalar input literals. */
    coerceInputLiteral: GraphQLScalarInputLiteralCoercer<TInternal> | undefined;
    /** Converter used to produce GraphQL literals from runtime input values. */
    valueToLiteral: GraphQLScalarValueToLiteral | undefined;
    /** Custom extension fields reserved for users. */
    extensions: Readonly<GraphQLScalarTypeExtensions>;
    /** AST node from which this schema element was built, if available. */
    astNode: Maybe<ScalarTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes: ReadonlyArray<ScalarTypeExtensionNode>;
    /**
     * Creates a GraphQLScalarType instance.
     * @param config - Configuration describing this object.
     * @example
     * ```ts
     * import { Kind, parse } from 'graphql/language';
     * import { GraphQLScalarType } from 'graphql/type';
     *
     * const document = parse(`
     *   "Odd integer values."
     *   scalar Odd @specifiedBy(url: "https://example.com/odd")
     *
     *   extend scalar Odd @specifiedBy(url: "https://example.com/odd-v2")
     * `);
     *
     * const Odd = new GraphQLScalarType({
     *   name: 'Odd',
     *   description: 'Odd integer values.',
     *   specifiedByURL: 'https://example.com/odd',
     *   coerceOutputValue: (value) => {
     *     if (typeof value !== 'number' || value % 2 === 0) {
     *       throw new TypeError('Odd can only produce odd numbers.');
     *     }
     *     return value;
     *   },
     *   coerceInputValue: (value) => {
     *     if (typeof value !== 'number' || value % 2 === 0) {
     *       throw new TypeError('Odd can only accept odd numbers.');
     *     }
     *     return value;
     *   },
     *   coerceInputLiteral: (ast) => {
     *     if (ast.kind !== Kind.INT) {
     *       throw new TypeError('Odd can only accept integer literals.');
     *     }
     *     const value = Number(ast.value);
     *     if (value % 2 === 0) {
     *       throw new TypeError('Odd can only accept odd integer literals.');
     *     }
     *     return value;
     *   },
     *   valueToLiteral: (value) => {
     *     return { kind: Kind.INT, value: String(ensureOdd(value)) };
     *   },
     *   extensions: { numeric: true },
     *   astNode: document.definitions[0],
     *   extensionASTNodes: [document.definitions[1]],
     * });
     *
     * Odd.description; // => 'Odd integer values.'
     * Odd.specifiedByURL; // => 'https://example.com/odd'
     * Odd.coerceOutputValue(3); // => 3
     * Odd.coerceInputValue(5); // => 5
     * Odd.extensions; // => { numeric: true }
     * ```
     */
    constructor(config: Readonly<GraphQLScalarTypeConfig<TInternal, TExternal>>);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns a normalized configuration object for this object.
     * @returns A configuration object that can be used to recreate this object.
     * @example
     * ```ts
     * import { GraphQLScalarType } from 'graphql/type';
     *
     * const Url = new GraphQLScalarType({
     *   name: 'Url',
     *   description: 'An absolute URL string.',
     *   specifiedByURL: 'https://url.spec.whatwg.org/',
     * });
     *
     * const config = Url.toConfig();
     * const UrlCopy = new GraphQLScalarType(config);
     *
     * config.name; // => 'Url'
     * config.specifiedByURL; // => 'https://url.spec.whatwg.org/'
     * UrlCopy.name; // => Url.name
     * ```
     */
    toConfig(): GraphQLScalarTypeNormalizedConfig<TInternal, TExternal>;
    /**
     * Returns the schema coordinate identifying this scalar type.
     * @returns The schema coordinate for this scalar type.
     * @example
     * ```ts
     * import { GraphQLScalarType } from 'graphql/type';
     *
     * const DateTime = new GraphQLScalarType({ name: 'DateTime' });
     *
     * DateTime.toString(); // => 'DateTime'
     * String(DateTime); // => 'DateTime'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The JSON-serializable representation.
     * @example
     * ```ts
     * import { GraphQLScalarType } from 'graphql/type';
     *
     * const DateTime = new GraphQLScalarType({ name: 'DateTime' });
     *
     * DateTime.toJSON(); // => 'DateTime'
     * JSON.stringify({ type: DateTime }); // => '{"type":"DateTime"}'
     * ```
     */
    toJSON(): string;
}
/**
 * Deprecated function type that serializes a runtime value as a scalar output
 * value. Use `GraphQLScalarOutputValueCoercer` instead.
 * @typeParam TExternal - External representation accepted from or returned to callers.
 * @deprecated Use GraphQLScalarOutputValueCoercer instead. Will be removed in v18.
 */
export type GraphQLScalarSerializer<TExternal> = (outputValue: unknown) => TExternal;
/**
 * Function used to coerce internal scalar values for response output.
 * @typeParam TExternal - External representation accepted from or returned to callers.
 */
export type GraphQLScalarOutputValueCoercer<TExternal> = (outputValue: unknown) => TExternal;
/**
 * Deprecated function type that parses a runtime input value as a scalar input
 * value. Use `GraphQLScalarInputValueCoercer` instead.
 * @typeParam TInternal - Internal runtime representation for this scalar.
 * @deprecated Use GraphQLScalarInputValueCoercer instead. Will be removed in v18.
 */
export type GraphQLScalarValueParser<TInternal> = (inputValue: unknown) => TInternal;
/**
 * Function used to coerce externally provided scalar input values.
 * @typeParam TInternal - Internal runtime representation for this scalar.
 */
export type GraphQLScalarInputValueCoercer<TInternal> = (inputValue: unknown) => TInternal;
/**
 * Deprecated function type that parses a GraphQL value literal as a scalar
 * input value. Use `GraphQLScalarInputLiteralCoercer` instead.
 * @typeParam TInternal - Internal runtime representation for this scalar.
 * @deprecated Use GraphQLScalarInputLiteralCoercer instead. Will be removed in v18.
 */
export type GraphQLScalarLiteralParser<TInternal> = (valueNode: ValueNode, variables: Maybe<ObjMap<unknown>>) => Maybe<TInternal>;
/**
 * Function used to coerce GraphQL scalar input literals.
 * @typeParam TInternal - Internal runtime representation for this scalar.
 */
export type GraphQLScalarInputLiteralCoercer<TInternal> = (valueNode: ConstValueNode) => Maybe<TInternal>;
/** @internal */
export type GraphQLScalarValueToLiteral = (inputValue: unknown) => ConstValueNode | undefined;
/**
 * Configuration used to construct a GraphQLScalarType.
 * @typeParam TInternal - Internal runtime representation for this scalar.
 * @typeParam TExternal - External representation accepted from or returned to callers.
 */
export interface GraphQLScalarTypeConfig<TInternal, TExternal> {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description?: Maybe<string>;
    /** URL identifying the behavior specified for this custom scalar. */
    specifiedByURL?: Maybe<string>;
    /**
     * Deprecated legacy serializer used to convert internal values for response
     * output. Use `coerceOutputValue()` instead.
     * @deprecated use `coerceOutputValue()` instead, `serialize()` will be removed in v18
     */
    serialize?: GraphQLScalarSerializer<TExternal> | undefined;
    /**
     * Deprecated legacy parser used to convert externally provided input values.
     * Use `coerceInputValue()` instead.
     * @deprecated use `coerceInputValue()` instead, `parseValue()` will be removed in v18
     */
    parseValue?: GraphQLScalarValueParser<TInternal> | undefined;
    /**
     * Deprecated legacy parser used to convert externally provided input
     * literals. Use `replaceVariables()` and `coerceInputLiteral()` instead.
     * @deprecated use `replaceVariables()` and `coerceInputLiteral()` instead, `parseLiteral()` will be removed in v18
     */
    parseLiteral?: GraphQLScalarLiteralParser<TInternal> | undefined;
    /** Coerces an internal value to include in a response. */
    coerceOutputValue?: GraphQLScalarOutputValueCoercer<TExternal> | undefined;
    /** Coerces an externally provided value to use as an input. */
    coerceInputValue?: GraphQLScalarInputValueCoercer<TInternal> | undefined;
    /** Coerces an externally provided const literal value to use as an input. */
    coerceInputLiteral?: GraphQLScalarInputLiteralCoercer<TInternal> | undefined;
    /** Translates an externally provided value to a literal (AST). */
    valueToLiteral?: GraphQLScalarValueToLiteral | undefined;
    /** Custom extension fields reserved for users. */
    extensions?: Maybe<Readonly<GraphQLScalarTypeExtensions>>;
    /** AST node from which this schema element was built, if available. */
    astNode?: Maybe<ScalarTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes?: Maybe<ReadonlyArray<ScalarTypeExtensionNode>>;
}
/** @internal */
export interface GraphQLScalarTypeNormalizedConfig<TInternal, TExternal> extends GraphQLScalarTypeConfig<TInternal, TExternal> {
    serialize: GraphQLScalarSerializer<TExternal>;
    parseValue: GraphQLScalarValueParser<TInternal>;
    parseLiteral: GraphQLScalarLiteralParser<TInternal>;
    coerceOutputValue: GraphQLScalarOutputValueCoercer<TExternal>;
    coerceInputValue: GraphQLScalarInputValueCoercer<TInternal>;
    coerceInputLiteral: GraphQLScalarInputLiteralCoercer<TInternal> | undefined;
    extensions: Readonly<GraphQLScalarTypeExtensions>;
    extensionASTNodes: ReadonlyArray<ScalarTypeExtensionNode>;
}
/**
 * Custom extensions
 * @remarks
 * Use a unique identifier name for your extension, for example the name of
 * your library or project. Do not use a shortened identifier as this increases
 * the risk of conflicts. We recommend you add at most one extension field,
 * an object which can contain all the values you need.
 * We've provided these template arguments because this is an open type and
 * you may find them useful.
 * @typeParam _TSource - Reserved source type parameter for extension typing.
 * @typeParam _TContext - Reserved context type parameter for extension typing.
 */
export interface GraphQLObjectTypeExtensions<_TSource = any, _TContext = any> {
    [attributeName: string | symbol]: unknown;
}
/**
 * Object Type Definition
 *
 * Almost all of the GraphQL types you define will be object types. Object types
 * have a name, but most importantly describe their fields.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 * @typeParam TAbstract - Runtime value type used for abstract type resolution.
 * @example
 * ```ts
 * const AddressType = new GraphQLObjectType({
 *   name: 'Address',
 *   fields: {
 *     street: { type: GraphQLString },
 *     number: { type: GraphQLInt },
 *     formatted: {
 *       type: GraphQLString,
 *       resolve: (obj) => {
 *         return obj.number + ' ' + obj.street;
 *       },
 *     },
 *   },
 * });
 * ```
 * @example
 * When two types need to refer to each other, or a type needs to refer to
 * itself in a field, you can use a function expression (aka a closure or a
 * thunk) to supply the fields lazily.
 *
 * ```ts
 * const PersonType = new GraphQLObjectType({
 *   name: 'Person',
 *   fields: () => ({
 *     name: { type: GraphQLString },
 *     bestFriend: { type: PersonType },
 *   }),
 * });
 * ```
 */
export declare class GraphQLObjectType<TSource = any, TContext = any, TAbstract = any> implements GraphQLSchemaElement {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description: Maybe<string>;
    /** Predicate used to determine whether a runtime value belongs to this object type. */
    isTypeOf: Maybe<GraphQLIsTypeOfFn<TAbstract, TContext>>;
    /** Custom extension fields reserved for users. */
    extensions: Readonly<GraphQLObjectTypeExtensions<TSource, TContext>>;
    /** AST node from which this schema element was built, if available. */
    astNode: Maybe<ObjectTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes: ReadonlyArray<ObjectTypeExtensionNode>;
    private _fields;
    private _interfaces;
    /**
     * Creates a GraphQLObjectType instance.
     * @param config - Configuration describing this object.
     * @example
     * ```ts
     * // Configure an object type with interfaces, fields, arguments, and metadata.
     * import { parse } from 'graphql/language';
     * import {
     *   GraphQLID,
     *   GraphQLInterfaceType,
     *   GraphQLNonNull,
     *   GraphQLObjectType,
     *   GraphQLString,
     * } from 'graphql/type';
     *
     * const document = parse(`
     *   type User implements Node {
     *     id: ID!
     *     name(format: String = "short"): String
     *   }
     *
     *   extend type User {
     *     displayName: String
     *   }
     * `);
     * const definition = document.definitions[0];
     * const nameField = definition.fields[1];
     * const formatArg = nameField.arguments[0];
     *
     * const Node = new GraphQLInterfaceType({
     *   name: 'Node',
     *   fields: {
     *     id: { type: new GraphQLNonNull(GraphQLID) },
     *   },
     * });
     *
     * const User = new GraphQLObjectType({
     *   name: 'User',
     *   description: 'A registered user.',
     *   interfaces: [Node],
     *   fields: {
     *     id: { type: new GraphQLNonNull(GraphQLID) },
     *     name: {
     *       description: 'The formatted user name.',
     *       type: GraphQLString,
     *       args: {
     *         format: {
     *           description: 'Controls the name format.',
     *           type: GraphQLString,
     *           default: { value: 'short' },
     *           deprecationReason: 'Use locale instead.',
     *           extensions: { public: true },
     *           astNode: formatArg,
     *         },
     *       },
     *       resolve: (user, { format }) => {
     *         return format === 'long' ? user.fullName : user.name;
     *       },
     *       deprecationReason: 'Use displayName.',
     *       extensions: { cacheSeconds: 60 },
     *       astNode: nameField,
     *     },
     *   },
     *   isTypeOf: (value) => {
     *     return typeof value === 'object' && value != null && 'id' in value;
     *   },
     *   extensions: { entity: 'User' },
     *   astNode: definition,
     *   extensionASTNodes: [document.definitions[1]],
     * });
     *
     * User.name; // => 'User'
     * User.getInterfaces(); // => [Node]
     * Object.keys(User.getFields()); // => ['id', 'name']
     * User.getFields().name.args[0].default.value; // => 'short'
     * User.extensions; // => { entity: 'User' }
     * ```
     * @example
     * ```ts
     * // This variant configures a subscription field with subscribe and resolve functions.
     * import { GraphQLObjectType, GraphQLString } from 'graphql/type';
     *
     * const Subscription = new GraphQLObjectType({
     *   name: 'Subscription',
     *   fields: {
     *     greeting: {
     *       type: GraphQLString,
     *       subscribe: async function* () {
     *         yield { greeting: 'Hello!' };
     *       },
     *       resolve: (event) => {
     *         return event.greeting;
     *       },
     *     },
     *   },
     * });
     *
     * typeof Subscription.getFields().greeting.subscribe; // => 'function'
     * ```
     */
    constructor(config: Readonly<GraphQLObjectTypeConfig<TSource, TContext, TAbstract>>);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns the fields defined by this type.
     * @returns The fields keyed by field name.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertObjectType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   type User {
     *     id: ID!
     *     name: String
     *   }
     *
     *   type Query {
     *     viewer: User
     *   }
     * `);
     *
     * const User = assertObjectType(schema.getType('User'));
     * const fields = User.getFields();
     *
     * Object.keys(fields); // => ['id', 'name']
     * String(fields.id.type); // => 'ID!'
     * ```
     */
    getFields(): GraphQLFieldMap<TSource, TContext>;
    /**
     * Returns the interfaces implemented by this type.
     * @returns The implemented interfaces.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertObjectType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   interface Node {
     *     id: ID!
     *   }
     *
     *   type User implements Node {
     *     id: ID!
     *   }
     *
     *   type Query {
     *     viewer: User
     *   }
     * `);
     *
     * const User = assertObjectType(schema.getType('User'));
     *
     * User.getInterfaces().map((type) => type.name); // => ['Node']
     * ```
     */
    getInterfaces(): ReadonlyArray<GraphQLInterfaceType>;
    /**
     * Returns a normalized configuration object for this object.
     * @returns A configuration object that can be used to recreate this object.
     * @example
     * ```ts
     * import { GraphQLObjectType, GraphQLString } from 'graphql/type';
     *
     * const User = new GraphQLObjectType({
     *   name: 'User',
     *   fields: {
     *     name: { type: GraphQLString },
     *   },
     * });
     *
     * const config = User.toConfig();
     * const UserCopy = new GraphQLObjectType(config);
     *
     * config.fields.name.type; // => GraphQLString
     * UserCopy.getFields().name.type; // => GraphQLString
     * ```
     */
    toConfig(): GraphQLObjectTypeNormalizedConfig<TSource, TContext, TAbstract>;
    /**
     * Returns the schema coordinate identifying this object type.
     * @returns The schema coordinate for this object type.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertObjectType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   type User {
     *     name: String
     *   }
     *
     *   type Query {
     *     viewer: User
     *   }
     * `);
     *
     * const User = assertObjectType(schema.getType('User'));
     *
     * User.toString(); // => 'User'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The JSON-serializable representation.
     * @example
     * ```ts
     * import { GraphQLObjectType, GraphQLString } from 'graphql/type';
     *
     * const User = new GraphQLObjectType({
     *   name: 'User',
     *   fields: { name: { type: GraphQLString } },
     * });
     *
     * User.toJSON(); // => 'User'
     * JSON.stringify({ type: User }); // => '{"type":"User"}'
     * ```
     */
    toJSON(): string;
}
/**
 * Configuration used to construct a GraphQLObjectType.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 * @typeParam TAbstract - Runtime value type used for abstract type resolution.
 */
export interface GraphQLObjectTypeConfig<TSource, TContext, TAbstract = unknown> {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description?: Maybe<string>;
    /** Interfaces implemented by this object or interface type. */
    interfaces?: ThunkReadonlyArray<GraphQLInterfaceType> | undefined;
    /** Fields declared by this object, interface, input object, or literal. */
    fields: ThunkObjMap<GraphQLFieldConfig<TSource, TContext>>;
    /** Predicate used to determine whether a runtime value belongs to this object type. */
    isTypeOf?: Maybe<GraphQLIsTypeOfFn<TAbstract, TContext>>;
    /** Custom extension fields reserved for users. */
    extensions?: Maybe<Readonly<GraphQLObjectTypeExtensions<TSource, TContext>>>;
    /** AST node from which this schema element was built, if available. */
    astNode?: Maybe<ObjectTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes?: Maybe<ReadonlyArray<ObjectTypeExtensionNode>>;
}
/** @internal */
export interface GraphQLObjectTypeNormalizedConfig<TSource, TContext, TAbstract = unknown> extends GraphQLObjectTypeConfig<TSource, TContext, TAbstract> {
    interfaces: ReadonlyArray<GraphQLInterfaceType>;
    fields: GraphQLFieldNormalizedConfigMap<TSource, TContext>;
    extensions: Readonly<GraphQLObjectTypeExtensions<TSource, TContext>>;
    extensionASTNodes: ReadonlyArray<ObjectTypeExtensionNode>;
}
/**
 * Resolves the concrete object type for an abstract GraphQL type.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 */
export type GraphQLTypeResolver<TSource, TContext> = (value: TSource, context: TContext, info: GraphQLResolveInfo, abstractType: GraphQLAbstractType) => PromiseOrValue<string | undefined>;
/**
 * Checks whether a runtime value belongs to a GraphQL object type.
 * @typeParam TAbstract - Runtime value type used for abstract type resolution.
 * @typeParam TContext - Context object type passed to resolvers.
 */
export type GraphQLIsTypeOfFn<TAbstract, TContext> = (value: TAbstract, context: TContext, info: GraphQLResolveInfo) => PromiseOrValue<boolean>;
/**
 * Resolves the runtime value for a GraphQL field.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 * @typeParam TArgs - Argument object type passed to resolvers.
 * @typeParam TResult - Result value type.
 */
export type GraphQLFieldResolver<TSource, TContext, TArgs = any, TResult = unknown> = (source: TSource, args: TArgs, context: TContext, info: GraphQLResolveInfo) => TResult;
/** Utilities available from resolver info for tracking asynchronous work. */
export interface GraphQLResolveInfoHelpers {
    /**
     * Promise.all wrapper that allows rejected branches to be tracked
     * as execution async work.
     *
     * Intended use: return or await this promise from resolver work.
     * Un-awaited async side effects are an anti-pattern:
     *
     *   const { promiseAll } = info.getAsyncHelpers();
     *   promiseAll([someAsyncWork(), someOtherAsyncWork()]).catch(() => undefined);
     *
     * In that anti-pattern, tracking starts only after rejection (on a
     * later microtask), so this work is not guaranteed to delay
     * `hooks.asyncWorkFinished`.
     *
     * Use `track(...)` for un-awaited async side effects:
     *
     *   const { track } = info.getAsyncHelpers();
     *   track([
     *     someAsyncWork().catch(() => undefined),
     *     someOtherAsyncWork().catch(() => undefined)
     *   ]);
     */
    readonly promiseAll: <T>(values: ReadonlyArray<PromiseLike<T> | T>) => Promise<Array<T>>;
    /** Tracks asynchronous work that should delay execution completion hooks. */
    readonly track: (maybePromises: ReadonlyArray<unknown>) => void;
}
/** Information about the currently executing GraphQL field. */
export interface GraphQLResolveInfo {
    /** The field name referenced by this schema coordinate. */
    readonly fieldName: string;
    /** AST field nodes that contributed to the current field execution. */
    readonly fieldNodes: ReadonlyArray<FieldNode>;
    /** GraphQL output type declared for the current field. */
    readonly returnType: GraphQLOutputType;
    /** Object type that owns the current field. */
    readonly parentType: GraphQLObjectType;
    /** Response path where this error occurred during execution. */
    readonly path: Path;
    /** The schema used for validation or execution. */
    readonly schema: GraphQLSchema;
    /** Fragment definitions in the operation document keyed by fragment name. */
    readonly fragments: ObjMap<FragmentDefinitionNode>;
    /** Initial root value passed to the operation. */
    readonly rootValue: unknown;
    /** The operation selected for execution. */
    readonly operation: OperationDefinitionNode;
    /**
     * Coerced variable values and source metadata for this operation. Resolver
     * code that needs runtime variable values should read `variableValues.coerced`.
     */
    readonly variableValues: VariableValues;
    /** Returns the AbortSignal supplied for this execution, if any. */
    readonly getAbortSignal: () => AbortSignal | undefined;
    /** Returns helper functions for tracking asynchronous resolver work. */
    readonly getAsyncHelpers: () => GraphQLResolveInfoHelpers;
}
/**
 * Custom extensions
 * @remarks
 * Use a unique identifier name for your extension, for example the name of
 * your library or project. Do not use a shortened identifier as this increases
 * the risk of conflicts. We recommend you add at most one extension field,
 * an object which can contain all the values you need.
 * We've provided these template arguments because this is an open type and
 * you may find them useful.
 * @typeParam _TSource - Reserved source type parameter for extension typing.
 * @typeParam _TContext - Reserved context type parameter for extension typing.
 * @typeParam _TArgs - Reserved argument type parameter for extension typing.
 */
export interface GraphQLFieldExtensions<_TSource, _TContext, _TArgs = any> {
    [attributeName: string | symbol]: unknown;
}
/**
 * Configuration used to define a GraphQL field.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 * @typeParam TArgs - Argument object type passed to resolvers.
 */
export interface GraphQLFieldConfig<TSource, TContext, TArgs = any> {
    /** Human-readable description for this schema element, if provided. */
    description?: Maybe<string>;
    /** The GraphQL type reference or runtime type for this element. */
    type: GraphQLOutputType;
    /** Arguments accepted by this field or directive. */
    args?: GraphQLFieldConfigArgumentMap | undefined;
    /** Resolver function used to produce this field value. */
    resolve?: GraphQLFieldResolver<TSource, TContext, TArgs> | undefined;
    /** Resolver function used to create a subscription event stream for this field. */
    subscribe?: GraphQLFieldResolver<TSource, TContext, TArgs> | undefined;
    /** Reason this element is deprecated, if one was provided. */
    deprecationReason?: Maybe<string>;
    /** Custom extension fields reserved for users. */
    extensions?: Maybe<Readonly<GraphQLFieldExtensions<TSource, TContext, TArgs>>>;
    /** AST node from which this schema element was built, if available. */
    astNode?: Maybe<FieldDefinitionNode>;
}
/** @internal */
export interface GraphQLFieldNormalizedConfig<TSource, TContext, TArgs = any> extends GraphQLFieldConfig<TSource, TContext, TArgs> {
    args: GraphQLFieldNormalizedConfigArgumentMap;
    extensions: Readonly<GraphQLFieldExtensions<TSource, TContext, TArgs>>;
}
/** A map of argument names to argument configuration objects. */
export type GraphQLFieldConfigArgumentMap = ObjMap<GraphQLArgumentConfig>;
/** @internal */
export type GraphQLFieldNormalizedConfigArgumentMap = ObjMap<GraphQLArgumentNormalizedConfig>;
/**
 * Custom extensions
 * @remarks
 * Use a unique identifier name for your extension, for example the name of
 * your library or project. Do not use a shortened identifier as this increases
 * the risk of conflicts. We recommend you add at most one extension field,
 * an object which can contain all the values you need.
 */
export interface GraphQLArgumentExtensions {
    [attributeName: string | symbol]: unknown;
}
/** Configuration used to define a GraphQL argument. */
export interface GraphQLArgumentConfig {
    /** Human-readable description for this schema element, if provided. */
    description?: Maybe<string>;
    /** The GraphQL type reference or runtime type for this element. */
    type: GraphQLInputType;
    /**
     * Deprecated legacy default value for this argument. Use `default` instead.
     * @deprecated use `default` instead, `defaultValue` will be removed in v18
     */
    defaultValue?: unknown;
    /** Default value represented as either a runtime value or a GraphQL literal. */
    default?: GraphQLDefaultInput | undefined;
    /** Reason this element is deprecated, if one was provided. */
    deprecationReason?: Maybe<string>;
    /** Custom extension fields reserved for users. */
    extensions?: Maybe<Readonly<GraphQLArgumentExtensions>>;
    /** AST node from which this schema element was built, if available. */
    astNode?: Maybe<InputValueDefinitionNode>;
}
/** @internal */
export interface GraphQLArgumentNormalizedConfig extends GraphQLArgumentConfig {
    default: GraphQLDefaultInput | undefined;
    extensions: Readonly<GraphQLArgumentExtensions>;
}
/**
 * A map of field names to field configuration objects.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 */
export type GraphQLFieldConfigMap<TSource, TContext> = ObjMap<GraphQLFieldConfig<TSource, TContext>>;
/** @internal */
export type GraphQLFieldNormalizedConfigMap<TSource, TContext> = ObjMap<GraphQLFieldNormalizedConfig<TSource, TContext>>;
/**
 * A resolved GraphQL field definition.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 * @typeParam TArgs - Argument object type passed to resolvers.
 */
export declare class GraphQLField<TSource = any, TContext = any, TArgs = any> implements GraphQLSchemaElement {
    /** Object or interface type that owns this field, if known. */
    parentType: GraphQLObjectType<TSource, TContext> | GraphQLInterfaceType<TSource, TContext> | undefined;
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description: Maybe<string>;
    /** The GraphQL type reference or runtime type for this element. */
    type: GraphQLOutputType;
    /** Arguments accepted by this field or directive. */
    args: ReadonlyArray<GraphQLArgument>;
    /** Resolver function used to produce this field value. */
    resolve?: GraphQLFieldResolver<TSource, TContext, TArgs> | undefined;
    /** Resolver function used to create a subscription event stream for this field. */
    subscribe?: GraphQLFieldResolver<TSource, TContext, TArgs> | undefined;
    /** Reason this element is deprecated, if one was provided. */
    deprecationReason: Maybe<string>;
    /** Custom extension fields reserved for users. */
    extensions: Readonly<GraphQLFieldExtensions<TSource, TContext, TArgs>>;
    /** AST node from which this schema element was built, if available. */
    astNode: Maybe<FieldDefinitionNode>;
    /**
     * Creates a resolved GraphQL field definition.
     * @param parentType - Object or interface type that owns this field, if known.
     * @param name - Field name.
     * @param config - Field configuration.
     * @example
     * ```ts
     * import { parse } from 'graphql/language';
     * import { GraphQLField, GraphQLObjectType, GraphQLString } from 'graphql/type';
     *
     * const Query = new GraphQLObjectType({ name: 'Query', fields: {} });
     * const document = parse('type Query { greeting: String }');
     * const fieldNode = document.definitions[0].fields[0];
     * const field = new GraphQLField(Query, 'greeting', {
     *   description: 'Greeting text.',
     *   type: GraphQLString,
     *   args: {
     *     name: { type: GraphQLString, default: { value: 'world' } },
     *   },
     *   resolve: (_source, { name }) => `Hello, ${name}!`,
     *   subscribe: async function* () {
     *     yield { greeting: 'Hello!' };
     *   },
     *   deprecationReason: 'Use hello.',
     *   extensions: { cacheSeconds: 60 },
     *   astNode: fieldNode,
     * });
     *
     * field.parentType; // => Query
     * field.name; // => 'greeting'
     * field.args[0].default.value; // => 'world'
     * typeof field.subscribe; // => 'function'
     * field.deprecationReason; // => 'Use hello.'
     * field.astNode; // => fieldNode
     * ```
     */
    constructor(parentType: GraphQLObjectType<TSource, TContext> | GraphQLInterfaceType<TSource, TContext> | undefined, name: string, config: GraphQLFieldConfig<TSource, TContext, TArgs>);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns a normalized configuration object for this field.
     * @returns A configuration object that can be used to recreate this field.
     * @example
     * ```ts
     * import { GraphQLField, GraphQLObjectType, GraphQLString } from 'graphql/type';
     *
     * const Query = new GraphQLObjectType({ name: 'Query', fields: {} });
     * const field = new GraphQLField(Query, 'greeting', {
     *   type: GraphQLString,
     *   extensions: { cacheSeconds: 60 },
     * });
     *
     * field.toConfig().type; // => GraphQLString
     * field.toConfig().extensions; // => { cacheSeconds: 60 }
     * ```
     */
    toConfig(): GraphQLFieldNormalizedConfig<TSource, TContext, TArgs>;
    /**
     * Returns this field as a schema coordinate string.
     * @returns The field coordinate.
     * @example
     * ```ts
     * import { GraphQLField, GraphQLObjectType, GraphQLString } from 'graphql/type';
     *
     * const Query = new GraphQLObjectType({ name: 'Query', fields: {} });
     * const field = new GraphQLField(Query, 'greeting', { type: GraphQLString });
     *
     * field.toString(); // => 'Query.greeting'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The field coordinate.
     * @example
     * ```ts
     * import { GraphQLField, GraphQLObjectType, GraphQLString } from 'graphql/type';
     *
     * const Query = new GraphQLObjectType({ name: 'Query', fields: {} });
     * const field = new GraphQLField(Query, 'greeting', { type: GraphQLString });
     *
     * JSON.stringify(field); // => '"Query.greeting"'
     * ```
     */
    toJSON(): string;
}
/** A resolved GraphQL argument definition. */
export declare class GraphQLArgument implements GraphQLSchemaElement {
    /** Field or directive that owns this argument. */
    parent: GraphQLField | GraphQLDirective;
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description: Maybe<string>;
    /** The GraphQL type reference or runtime type for this element. */
    type: GraphQLInputType;
    /**
     * Deprecated legacy default value used when no explicit value is supplied.
     * Use `default` instead.
     * @deprecated use `default` instead, `defaultValue` will be removed in v18
     */
    defaultValue: unknown;
    /** Default value represented as either a runtime value or a GraphQL literal. */
    default: GraphQLDefaultInput | undefined;
    /** Reason this element is deprecated, if one was provided. */
    deprecationReason: Maybe<string>;
    /** Custom extension fields reserved for users. */
    extensions: Readonly<GraphQLArgumentExtensions>;
    /** AST node from which this schema element was built, if available. */
    astNode: Maybe<InputValueDefinitionNode>;
    /**
     * Creates a resolved GraphQL argument definition.
     * @param parent - Field or directive that owns this argument.
     * @param name - Argument name.
     * @param config - Argument configuration.
     * @example
     * ```ts
     * import {
     *   GraphQLArgument,
     *   GraphQLField,
     *   GraphQLObjectType,
     *   GraphQLString,
     * } from 'graphql/type';
     *
     * const Query = new GraphQLObjectType({ name: 'Query', fields: {} });
     * const field = new GraphQLField(Query, 'greeting', { type: GraphQLString });
     * const arg = new GraphQLArgument(field, 'name', {
     *   type: GraphQLString,
     *   default: { value: 'world' },
     * });
     *
     * arg.parent; // => field
     * arg.name; // => 'name'
     * arg.default.value; // => 'world'
     * ```
     */
    constructor(parent: GraphQLField | GraphQLDirective, name: string, config: GraphQLArgumentConfig);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns a normalized configuration object for this argument.
     * @returns A configuration object that can be used to recreate this argument.
     * @example
     * ```ts
     * import {
     *   GraphQLArgument,
     *   GraphQLField,
     *   GraphQLObjectType,
     *   GraphQLString,
     * } from 'graphql/type';
     *
     * const Query = new GraphQLObjectType({ name: 'Query', fields: {} });
     * const field = new GraphQLField(Query, 'greeting', { type: GraphQLString });
     * const arg = new GraphQLArgument(field, 'name', {
     *   type: GraphQLString,
     *   default: { value: 'world' },
     * });
     *
     * arg.toConfig().default.value; // => 'world'
     * ```
     */
    toConfig(): GraphQLArgumentNormalizedConfig;
    /**
     * Returns this argument as a schema coordinate string.
     * @returns The argument coordinate.
     * @example
     * ```ts
     * import {
     *   GraphQLArgument,
     *   GraphQLField,
     *   GraphQLObjectType,
     *   GraphQLString,
     * } from 'graphql/type';
     *
     * const Query = new GraphQLObjectType({ name: 'Query', fields: {} });
     * const field = new GraphQLField(Query, 'greeting', { type: GraphQLString });
     * const arg = new GraphQLArgument(field, 'name', { type: GraphQLString });
     *
     * arg.toString(); // => 'Query.greeting(name:)'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The argument coordinate.
     * @example
     * ```ts
     * import {
     *   GraphQLArgument,
     *   GraphQLField,
     *   GraphQLObjectType,
     *   GraphQLString,
     * } from 'graphql/type';
     *
     * const Query = new GraphQLObjectType({ name: 'Query', fields: {} });
     * const field = new GraphQLField(Query, 'greeting', { type: GraphQLString });
     * const arg = new GraphQLArgument(field, 'name', { type: GraphQLString });
     *
     * JSON.stringify(arg); // => '"Query.greeting(name:)"'
     * ```
     */
    toJSON(): string;
}
/**
 * Returns true when the argument is non-null and has no default value.
 * @param arg - The argument definition to inspect.
 * @returns True when the argument is non-null and has no default value.
 * @example
 * ```ts
 * import {
 *   GraphQLArgument,
 *   GraphQLField,
 *   GraphQLInt,
 *   GraphQLNonNull,
 *   GraphQLObjectType,
 *   GraphQLString,
 *   isRequiredArgument,
 * } from 'graphql/type';
 *
 * const Query = new GraphQLObjectType({ name: 'Query', fields: {} });
 * const field = new GraphQLField(Query, 'reviews', { type: GraphQLString });
 * const requiredArgument = new GraphQLArgument(field, 'id', {
 *   type: new GraphQLNonNull(GraphQLInt),
 * });
 * const optionalArgument = new GraphQLArgument(field, 'name', {
 *   type: GraphQLString,
 * });
 * const argumentWithDefault = new GraphQLArgument(field, 'limit', {
 *   type: new GraphQLNonNull(GraphQLInt),
 *   default: { value: 10 },
 * });
 *
 * isRequiredArgument(requiredArgument); // => true
 * isRequiredArgument(optionalArgument); // => false
 * isRequiredArgument(argumentWithDefault); // => false
 * ```
 */
export declare function isRequiredArgument(arg: GraphQLArgument | GraphQLVariableSignature): boolean;
/**
 * A map of field names to resolved field definitions.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 */
export type GraphQLFieldMap<TSource, TContext> = ObjMap<GraphQLField<TSource, TContext>>;
/** Default input represented as either a runtime value or a GraphQL literal. */
export type GraphQLDefaultInput = {
    /** Runtime default value. */
    value: unknown;
    /** GraphQL literal default value is not provided in this variant. */
    literal?: never;
} | {
    /** GraphQL literal default value. */
    literal: ConstValueNode;
    /** Runtime default value is not provided in this variant. */
    value?: never;
};
/**
 * Custom extensions
 * @remarks
 * Use a unique identifier name for your extension, for example the name of
 * your library or project. Do not use a shortened identifier as this increases
 * the risk of conflicts. We recommend you add at most one extension field,
 * an object which can contain all the values you need.
 */
export interface GraphQLInterfaceTypeExtensions {
    [attributeName: string | symbol]: unknown;
}
/**
 * Interface Type Definition
 *
 * When a field can return one of a heterogeneous set of types, a Interface type
 * is used to describe what types are possible, what fields are in common across
 * all types, as well as a function to determine which type is actually used
 * when the field is resolved.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 * @example
 * ```ts
 * const EntityType = new GraphQLInterfaceType({
 *   name: 'Entity',
 *   fields: {
 *     name: { type: GraphQLString },
 *   },
 * });
 * ```
 */
export declare class GraphQLInterfaceType<TSource = any, TContext = any> implements GraphQLSchemaElement {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description: Maybe<string>;
    /** Function that resolves the concrete object type for this abstract type. */
    resolveType: Maybe<GraphQLTypeResolver<TSource, TContext>>;
    /** Custom extension fields reserved for users. */
    extensions: Readonly<GraphQLInterfaceTypeExtensions>;
    /** AST node from which this schema element was built, if available. */
    astNode: Maybe<InterfaceTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes: ReadonlyArray<InterfaceTypeExtensionNode>;
    private _fields;
    private _interfaces;
    /**
     * Creates a GraphQLInterfaceType instance.
     * @param config - Configuration describing this object.
     * @example
     * ```ts
     * import { parse } from 'graphql/language';
     * import { GraphQLID, GraphQLInterfaceType, GraphQLNonNull } from 'graphql/type';
     *
     * const document = parse(`
     *   interface Node {
     *     id: ID!
     *   }
     *
     *   interface Resource implements Node {
     *     id: ID!
     *   }
     *
     *   extend interface Resource {
     *     url: String
     *   }
     * `);
     *
     * const Node = new GraphQLInterfaceType({
     *   name: 'Node',
     *   fields: {
     *     id: { type: new GraphQLNonNull(GraphQLID) },
     *   },
     * });
     *
     * const Resource = new GraphQLInterfaceType({
     *   name: 'Resource',
     *   description: 'An addressable resource.',
     *   interfaces: [Node],
     *   fields: {
     *     id: { type: new GraphQLNonNull(GraphQLID) },
     *   },
     *   resolveType: (value) => {
     *     return typeof value === 'object' && value != null && 'url' in value
     *       ? 'WebPage'
     *       : null;
     *   },
     *   extensions: { abstract: true },
     *   astNode: document.definitions[1],
     *   extensionASTNodes: [document.definitions[2]],
     * });
     *
     * Resource.name; // => 'Resource'
     * Resource.getInterfaces(); // => [Node]
     * Object.keys(Resource.getFields()); // => ['id']
     * Resource.extensions; // => { abstract: true }
     * ```
     */
    constructor(config: Readonly<GraphQLInterfaceTypeConfig<TSource, TContext>>);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns the fields defined by this type.
     * @returns The fields keyed by field name.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertInterfaceType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   interface Node {
     *     id: ID!
     *   }
     *
     *   type User implements Node {
     *     id: ID!
     *   }
     *
     *   type Query {
     *     node: Node
     *   }
     * `);
     *
     * const Node = assertInterfaceType(schema.getType('Node'));
     * const fields = Node.getFields();
     *
     * Object.keys(fields); // => ['id']
     * String(fields.id.type); // => 'ID!'
     * ```
     */
    getFields(): GraphQLFieldMap<TSource, TContext>;
    /**
     * Returns the interfaces implemented by this type.
     * @returns The implemented interfaces.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertInterfaceType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   interface Resource {
     *     url: String!
     *   }
     *
     *   interface Image implements Resource {
     *     url: String!
     *     width: Int
     *   }
     *
     *   type Photo implements Resource & Image {
     *     url: String!
     *     width: Int
     *   }
     *
     *   type Query {
     *     image: Image
     *   }
     * `);
     *
     * const Image = assertInterfaceType(schema.getType('Image'));
     *
     * Image.getInterfaces().map((type) => type.name); // => ['Resource']
     * ```
     */
    getInterfaces(): ReadonlyArray<GraphQLInterfaceType>;
    /**
     * Returns a normalized configuration object for this object.
     * @returns A configuration object that can be used to recreate this object.
     * @example
     * ```ts
     * import { GraphQLID, GraphQLInterfaceType, GraphQLNonNull } from 'graphql/type';
     *
     * const Node = new GraphQLInterfaceType({
     *   name: 'Node',
     *   fields: {
     *     id: { type: new GraphQLNonNull(GraphQLID) },
     *   },
     * });
     *
     * const config = Node.toConfig();
     * const NodeCopy = new GraphQLInterfaceType(config);
     *
     * String(config.fields.id.type); // => 'ID!'
     * String(NodeCopy.getFields().id.type); // => 'ID!'
     * ```
     */
    toConfig(): GraphQLInterfaceTypeNormalizedConfig<TSource, TContext>;
    /**
     * Returns the schema coordinate identifying this interface type.
     * @returns The schema coordinate for this interface type.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertInterfaceType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   interface Node {
     *     id: ID!
     *   }
     *
     *   type User implements Node {
     *     id: ID!
     *   }
     *
     *   type Query {
     *     node: Node
     *   }
     * `);
     *
     * const Node = assertInterfaceType(schema.getType('Node'));
     *
     * Node.toString(); // => 'Node'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The JSON-serializable representation.
     * @example
     * ```ts
     * import { GraphQLInterfaceType, GraphQLString } from 'graphql/type';
     *
     * const Named = new GraphQLInterfaceType({
     *   name: 'Named',
     *   fields: { name: { type: GraphQLString } },
     * });
     *
     * Named.toJSON(); // => 'Named'
     * JSON.stringify({ type: Named }); // => '{"type":"Named"}'
     * ```
     */
    toJSON(): string;
}
/**
 * Configuration used to construct a GraphQLInterfaceType.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 */
export interface GraphQLInterfaceTypeConfig<TSource, TContext> {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description?: Maybe<string>;
    /** Interfaces implemented by this object or interface type. */
    interfaces?: ThunkReadonlyArray<GraphQLInterfaceType> | undefined;
    /** Fields declared by this object, interface, input object, or literal. */
    fields: ThunkObjMap<GraphQLFieldConfig<TSource, TContext>>;
    /**
     * Optionally provide a custom type resolver function. If one is not provided,
     * the default implementation will call `isTypeOf` on each implementing
     * Object type.
     */
    resolveType?: Maybe<GraphQLTypeResolver<TSource, TContext>>;
    /** Custom extension fields reserved for users. */
    extensions?: Maybe<Readonly<GraphQLInterfaceTypeExtensions>>;
    /** AST node from which this schema element was built, if available. */
    astNode?: Maybe<InterfaceTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes?: Maybe<ReadonlyArray<InterfaceTypeExtensionNode>>;
}
/** @internal */
export interface GraphQLInterfaceTypeNormalizedConfig<TSource, TContext> extends GraphQLInterfaceTypeConfig<TSource, TContext> {
    interfaces: ReadonlyArray<GraphQLInterfaceType>;
    fields: GraphQLFieldNormalizedConfigMap<TSource, TContext>;
    extensions: Readonly<GraphQLInterfaceTypeExtensions>;
    extensionASTNodes: ReadonlyArray<InterfaceTypeExtensionNode>;
}
/**
 * Custom extensions
 * @remarks
 * Use a unique identifier name for your extension, for example the name of
 * your library or project. Do not use a shortened identifier as this increases
 * the risk of conflicts. We recommend you add at most one extension field,
 * an object which can contain all the values you need.
 */
export interface GraphQLUnionTypeExtensions {
    [attributeName: string | symbol]: unknown;
}
/**
 * Union Type Definition
 *
 * When a field can return one of a heterogeneous set of types, a Union type
 * is used to describe what types are possible as well as providing a function
 * to determine which type is actually used when the field is resolved.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 * @example
 * ```ts
 * const PetType = new GraphQLUnionType({
 *   name: 'Pet',
 *   types: [DogType, CatType],
 *   resolveType: (value) => {
 *     if (value instanceof Dog) {
 *       return DogType;
 *     }
 *     if (value instanceof Cat) {
 *       return CatType;
 *     }
 *   },
 * });
 * ```
 */
export declare class GraphQLUnionType<TSource = any, TContext = any> implements GraphQLSchemaElement {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description: Maybe<string>;
    /** Function that resolves the concrete object type for this abstract type. */
    resolveType: Maybe<GraphQLTypeResolver<TSource, TContext>>;
    /** Custom extension fields reserved for users. */
    extensions: Readonly<GraphQLUnionTypeExtensions>;
    /** AST node from which this schema element was built, if available. */
    astNode: Maybe<UnionTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes: ReadonlyArray<UnionTypeExtensionNode>;
    private _types;
    /**
     * Creates a GraphQLUnionType instance.
     * @param config - Configuration describing this object.
     * @example
     * ```ts
     * import { parse } from 'graphql/language';
     * import {
     *   GraphQLObjectType,
     *   GraphQLString,
     *   GraphQLUnionType,
     * } from 'graphql/type';
     *
     * const document = parse(`
     *   union Media = Photo | Video
     *
     *   extend union Media = Audio
     * `);
     *
     * const Photo = new GraphQLObjectType({
     *   name: 'Photo',
     *   fields: { url: { type: GraphQLString } },
     * });
     * const Video = new GraphQLObjectType({
     *   name: 'Video',
     *   fields: { url: { type: GraphQLString } },
     * });
     *
     * const Media = new GraphQLUnionType({
     *   name: 'Media',
     *   description: 'Media that can appear in a search result.',
     *   types: [Photo, Video],
     *   resolveType: (value) => {
     *     return typeof value === 'object' && value != null && 'duration' in value
     *       ? 'Video'
     *       : 'Photo';
     *   },
     *   extensions: { searchable: true },
     *   astNode: document.definitions[0],
     *   extensionASTNodes: [document.definitions[1]],
     * });
     *
     * Media.description; // => 'Media that can appear in a search result.'
     * Media.getTypes().map((type) => type.name); // => ['Photo', 'Video']
     * Media.extensions; // => { searchable: true }
     * ```
     */
    constructor(config: Readonly<GraphQLUnionTypeConfig<TSource, TContext>>);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns the object types included in this union.
     * @returns The union member object types.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertUnionType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   type Photo {
     *     url: String!
     *   }
     *
     *   type Video {
     *     url: String!
     *   }
     *
     *   union Media = Photo | Video
     *
     *   type Query {
     *     media: [Media]
     *   }
     * `);
     *
     * const Media = assertUnionType(schema.getType('Media'));
     *
     * Media.getTypes().map((type) => type.name); // => ['Photo', 'Video']
     * ```
     */
    getTypes(): ReadonlyArray<GraphQLObjectType>;
    /**
     * Returns a normalized configuration object for this object.
     * @returns A configuration object that can be used to recreate this object.
     * @example
     * ```ts
     * import {
     *   GraphQLObjectType,
     *   GraphQLString,
     *   GraphQLUnionType,
     * } from 'graphql/type';
     *
     * const Photo = new GraphQLObjectType({
     *   name: 'Photo',
     *   fields: { url: { type: GraphQLString } },
     * });
     * const Video = new GraphQLObjectType({
     *   name: 'Video',
     *   fields: { url: { type: GraphQLString } },
     * });
     * const Media = new GraphQLUnionType({
     *   name: 'Media',
     *   types: [Photo, Video],
     * });
     *
     * const config = Media.toConfig();
     * const MediaCopy = new GraphQLUnionType(config);
     *
     * MediaCopy.getTypes().map((type) => type.name); // => ['Photo', 'Video']
     * ```
     */
    toConfig(): GraphQLUnionTypeNormalizedConfig<TSource, TContext>;
    /**
     * Returns the schema coordinate identifying this union type.
     * @returns The schema coordinate for this union type.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertUnionType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   type Photo {
     *     url: String!
     *   }
     *
     *   union SearchResult = Photo
     *
     *   type Query {
     *     search: [SearchResult]
     *   }
     * `);
     *
     * const SearchResult = assertUnionType(schema.getType('SearchResult'));
     *
     * SearchResult.toString(); // => 'SearchResult'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The JSON-serializable representation.
     * @example
     * ```ts
     * import {
     *   GraphQLObjectType,
     *   GraphQLString,
     *   GraphQLUnionType,
     * } from 'graphql/type';
     *
     * const Photo = new GraphQLObjectType({
     *   name: 'Photo',
     *   fields: { url: { type: GraphQLString } },
     * });
     * const SearchResult = new GraphQLUnionType({
     *   name: 'SearchResult',
     *   types: [Photo],
     * });
     *
     * SearchResult.toJSON(); // => 'SearchResult'
     * JSON.stringify({ type: SearchResult }); // => '{"type":"SearchResult"}'
     * ```
     */
    toJSON(): string;
}
/**
 * Configuration used to construct a GraphQLUnionType.
 * @typeParam TSource - Source object type passed to resolvers.
 * @typeParam TContext - Context object type passed to resolvers.
 */
export interface GraphQLUnionTypeConfig<TSource, TContext> {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description?: Maybe<string>;
    /** Object types that belong to this union type. */
    types: ThunkReadonlyArray<GraphQLObjectType>;
    /**
     * Optionally provide a custom type resolver function. If one is not provided,
     * the default implementation will call `isTypeOf` on each implementing
     * Object type.
     */
    resolveType?: Maybe<GraphQLTypeResolver<TSource, TContext>>;
    /** Custom extension fields reserved for users. */
    extensions?: Maybe<Readonly<GraphQLUnionTypeExtensions>>;
    /** AST node from which this schema element was built, if available. */
    astNode?: Maybe<UnionTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes?: Maybe<ReadonlyArray<UnionTypeExtensionNode>>;
}
/** @internal */
export interface GraphQLUnionTypeNormalizedConfig<TSource, TContext> extends GraphQLUnionTypeConfig<TSource, TContext> {
    types: ReadonlyArray<GraphQLObjectType>;
    extensions: Readonly<GraphQLUnionTypeExtensions>;
    extensionASTNodes: ReadonlyArray<UnionTypeExtensionNode>;
}
/**
 * Custom extensions
 * @remarks
 * Use a unique identifier name for your extension, for example the name of
 * your library or project. Do not use a shortened identifier as this increases
 * the risk of conflicts. We recommend you add at most one extension field,
 * an object which can contain all the values you need.
 */
export interface GraphQLEnumTypeExtensions {
    [attributeName: string | symbol]: unknown;
}
/**
 * Enum Type Definition
 *
 * Enum types define leaf values whose serialized form is one of a fixed set
 * of GraphQL enum names. Internally, enum values can map to any runtime value,
 * often integers.
 * @example
 * ```ts
 * import { GraphQLEnumType } from 'graphql/type';
 *
 * const RGBType = new GraphQLEnumType({
 *   name: 'RGB',
 *   values: {
 *     RED: { value: 0 },
 *     GREEN: { value: 1 },
 *     BLUE: { value: 2 },
 *   },
 * });
 *
 * RGBType.getValue('GREEN')?.value; // => 1
 * ```
 *
 * Note: If a value is not provided in a definition, the name of the enum value
 * will be used as its internal value.
 */
export declare class GraphQLEnumType/* <T> */  implements GraphQLSchemaElement {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description: Maybe<string>;
    /** Custom extension fields reserved for users. */
    extensions: Readonly<GraphQLEnumTypeExtensions>;
    /** AST node from which this schema element was built, if available. */
    astNode: Maybe<EnumTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes: ReadonlyArray<EnumTypeExtensionNode>;
    private _values;
    private _valueLookup;
    private _nameLookup;
    /**
     * Creates a GraphQLEnumType instance.
     * @param config - Configuration describing this object.
     * @example
     * ```ts
     * import { parse } from 'graphql/language';
     * import { GraphQLEnumType } from 'graphql/type';
     *
     * const document = parse(`
     *   enum Episode {
     *     NEW_HOPE
     *     EMPIRE
     *     JEDI
     *   }
     *
     *   extend enum Episode {
     *     FORCE_AWAKENS
     *   }
     * `);
     * const definition = document.definitions[0];
     *
     * const Episode = new GraphQLEnumType({
     *   name: 'Episode',
     *   description: 'A Star Wars film episode.',
     *   values: {
     *     NEW_HOPE: {
     *       value: 4,
     *       description: 'Released in 1977.',
     *       extensions: { trilogy: 'original' },
     *       astNode: definition.values[0],
     *     },
     *     EMPIRE: { value: 5, astNode: definition.values[1] },
     *     JEDI: {
     *       value: 6,
     *       deprecationReason: 'Use RETURN_OF_THE_JEDI.',
     *       astNode: definition.values[2],
     *     },
     *   },
     *   extensions: { catalog: 'films' },
     *   astNode: definition,
     *   extensionASTNodes: [document.definitions[1]],
     * });
     *
     * Episode.description; // => 'A Star Wars film episode.'
     * Episode.coerceOutputValue(5); // => 'EMPIRE'
     * Episode.coerceInputValue('JEDI'); // => 6
     * Episode.getValue('JEDI').deprecationReason; // => 'Use RETURN_OF_THE_JEDI.'
     * Episode.extensions; // => { catalog: 'films' }
     * ```
     */
    constructor(config: Readonly<GraphQLEnumTypeConfig>);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns the values defined by this enum type.
     * @returns Enum value definitions in schema order.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertEnumType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   enum Episode {
     *     NEW_HOPE
     *     EMPIRE
     *     JEDI
     *   }
     *
     *   type Query {
     *     episode: Episode
     *   }
     * `);
     *
     * const Episode = assertEnumType(schema.getType('Episode'));
     *
     * Episode.getValues().map((value) => value.name); // => ['NEW_HOPE', 'EMPIRE', 'JEDI']
     * ```
     */
    getValues(): ReadonlyArray<GraphQLEnumValue>;
    /**
     * Returns the enum value definition for a value name.
     * @param name - The GraphQL name to look up.
     * @returns The matching enum value definition, if it exists.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertEnumType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   enum Episode {
     *     NEW_HOPE
     *     EMPIRE
     *   }
     *
     *   type Query {
     *     episode: Episode
     *   }
     * `);
     *
     * const Episode = assertEnumType(schema.getType('Episode'));
     *
     * Episode.getValue('EMPIRE')?.name; // => 'EMPIRE'
     * Episode.getValue('JEDI'); // => undefined
     * ```
     */
    getValue(name: string): Maybe<GraphQLEnumValue>;
    /**
     * Serializes a runtime enum value as a GraphQL enum name.
     * @param outputValue - Runtime enum value to serialize.
     * @returns The GraphQL enum name for the runtime value.
     *
     * This deprecated method delegates to `coerceOutputValue()`; call
     * `coerceOutputValue()` directly instead.
     * @example
     * ```ts
     * import { GraphQLEnumType } from 'graphql/type';
     *
     * const RGB = new GraphQLEnumType({
     *   name: 'RGB',
     *   values: {
     *     RED: { value: 0 },
     *     GREEN: { value: 1 },
     *     BLUE: { value: 2 },
     *   },
     * });
     *
     * RGB.serialize(1); // => 'GREEN'
     * RGB.serialize(3); // throws an error
     * ```
     * @deprecated use `coerceOutputValue()` instead, `serialize()` will be removed in v18
     */
    serialize(outputValue: unknown): Maybe<string>;
    /**
     * Coerces a runtime enum value to a GraphQL enum name.
     * @param outputValue - Runtime enum value to coerce.
     * @returns The GraphQL enum name for the runtime value.
     * @example
     * ```ts
     * import { GraphQLEnumType } from 'graphql/type';
     *
     * const RGB = new GraphQLEnumType({
     *   name: 'RGB',
     *   values: {
     *     RED: { value: 0 },
     *     GREEN: { value: 1 },
     *     BLUE: { value: 2 },
     *   },
     * });
     *
     * RGB.coerceOutputValue(1); // => 'GREEN'
     * RGB.coerceOutputValue(3); // throws an error
     * ```
     */
    coerceOutputValue(outputValue: unknown): Maybe<string>;
    /**
     * Deprecated legacy enum parser for externally provided input values. Use
     * `coerceInputValue()` instead.
     * @param inputValue - External enum name to parse.
     * @param hideSuggestions - Whether suggestion text should be omitted from errors.
     * @returns The internal runtime value for the enum name.
     * @example
     * ```ts
     * import { GraphQLEnumType } from 'graphql/type';
     *
     * const RGB = new GraphQLEnumType({
     *   name: 'RGB',
     *   values: {
     *     RED: { value: 0 },
     *     GREEN: { value: 1 },
     *     BLUE: { value: 2 },
     *   },
     * });
     *
     * RGB.parseValue('BLUE'); // => 2
     * RGB.parseValue('PURPLE', true); // throws an error
     * ```
     * @deprecated use `coerceInputValue()` instead, `parseValue()` will be removed in v18
     */
    parseValue(inputValue: unknown, hideSuggestions?: Maybe<boolean>): Maybe<any>;
    /**
     * Coerces an external enum name to its internal runtime value.
     * @param inputValue - External enum name to coerce.
     * @param hideSuggestions - Whether suggestion text should be omitted from errors.
     * @returns The internal runtime value for the enum name.
     * @example
     * ```ts
     * import { GraphQLEnumType } from 'graphql/type';
     *
     * const RGB = new GraphQLEnumType({
     *   name: 'RGB',
     *   values: {
     *     RED: { value: 0 },
     *     GREEN: { value: 1 },
     *     BLUE: { value: 2 },
     *   },
     * });
     *
     * RGB.coerceInputValue('BLUE'); // => 2
     * RGB.coerceInputValue('PURPLE'); // throws an error
     * RGB.coerceInputValue(2); // throws an error
     * ```
     */
    coerceInputValue(inputValue: unknown, hideSuggestions?: Maybe<boolean>): Maybe<any>;
    /**
     * Deprecated legacy enum parser for externally provided input literals. Use
     * `coerceInputLiteral()` instead.
     * @param valueNode - Enum value AST node to parse.
     * @param _variables - Deprecated variable values parameter that is no longer used.
     * @param hideSuggestions - Whether suggestion text should be omitted from errors.
     * @returns The internal runtime value for the enum literal.
     * @example
     * ```ts
     * import { parseValue } from 'graphql/language';
     * import { GraphQLEnumType } from 'graphql/type';
     *
     * const RGB = new GraphQLEnumType({
     *   name: 'RGB',
     *   values: {
     *     RED: { value: 0 },
     *     GREEN: { value: 1 },
     *     BLUE: { value: 2 },
     *   },
     * });
     *
     * RGB.parseLiteral(parseValue('RED')); // => 0
     * RGB.parseLiteral(parseValue('"RED"')); // throws an error
     * ```
     * @deprecated use `coerceInputLiteral()` instead, `parseLiteral()` will be removed in v18
     */
    parseLiteral(valueNode: ValueNode, _variables: Maybe<ObjMap<unknown>>, hideSuggestions?: Maybe<boolean>): Maybe<any>;
    /**
     * Coerces an enum value AST node to its internal runtime value.
     * @param valueNode - Enum value AST node to coerce.
     * @param hideSuggestions - Whether suggestion text should be omitted from errors.
     * @returns The internal runtime value for the enum literal.
     * @example
     * ```ts
     * import { parseConstValue } from 'graphql/language';
     * import { GraphQLEnumType } from 'graphql/type';
     *
     * const RGB = new GraphQLEnumType({
     *   name: 'RGB',
     *   values: {
     *     RED: { value: 0 },
     *     GREEN: { value: 1 },
     *     BLUE: { value: 2 },
     *   },
     * });
     *
     * RGB.coerceInputLiteral(parseConstValue('RED')); // => 0
     * RGB.coerceInputLiteral(parseConstValue('"RED"'), true); // throws an error
     * ```
     */
    coerceInputLiteral(valueNode: ConstValueNode, hideSuggestions?: Maybe<boolean>): Maybe<any>;
    /**
     * Converts a runtime enum value to a GraphQL enum value AST node.
     * @param value - Runtime enum value to convert.
     * @returns Enum value AST node, or undefined if the value is invalid.
     * @example
     * ```ts
     * import { print } from 'graphql/language';
     * import { GraphQLEnumType } from 'graphql/type';
     *
     * const RGB = new GraphQLEnumType({
     *   name: 'RGB',
     *   values: {
     *     RED: { value: 0 },
     *     GREEN: { value: 1 },
     *     BLUE: { value: 2 },
     *   },
     * });
     *
     * print(RGB.valueToLiteral(2)); // => 'BLUE'
     * RGB.valueToLiteral(3); // => undefined
     * ```
     */
    valueToLiteral(value: unknown): ConstValueNode | undefined;
    /**
     * Returns a normalized configuration object for this object.
     * @returns A configuration object that can be used to recreate this object.
     * @example
     * ```ts
     * import { GraphQLEnumType } from 'graphql/type';
     *
     * const RGB = new GraphQLEnumType({
     *   name: 'RGB',
     *   values: {
     *     RED: { value: 0 },
     *     GREEN: { value: 1 },
     *     BLUE: { value: 2 },
     *   },
     * });
     *
     * const config = RGB.toConfig();
     * const RGBCopy = new GraphQLEnumType(config);
     *
     * config.values.GREEN.value; // => 1
     * RGBCopy.coerceOutputValue(2); // => 'BLUE'
     * ```
     */
    toConfig(): GraphQLEnumTypeNormalizedConfig;
    /**
     * Returns the schema coordinate identifying this enum type.
     * @returns The schema coordinate for this enum type.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertEnumType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   enum Episode {
     *     NEW_HOPE
     *   }
     *
     *   type Query {
     *     episode: Episode
     *   }
     * `);
     *
     * const Episode = assertEnumType(schema.getType('Episode'));
     *
     * Episode.toString(); // => 'Episode'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The JSON-serializable representation.
     * @example
     * ```ts
     * import { GraphQLEnumType } from 'graphql/type';
     *
     * const Episode = new GraphQLEnumType({
     *   name: 'Episode',
     *   values: {
     *     NEW_HOPE: {},
     *   },
     * });
     *
     * Episode.toJSON(); // => 'Episode'
     * JSON.stringify({ type: Episode }); // => '{"type":"Episode"}'
     * ```
     */
    toJSON(): string;
}
/** Configuration used to construct a GraphQLEnumType. */
export interface GraphQLEnumTypeConfig {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description?: Maybe<string>;
    /** Values contained in this enum, list, or input-object definition. */
    values: ThunkObjMap<GraphQLEnumValueConfig>;
    /** Custom extension fields reserved for users. */
    extensions?: Maybe<Readonly<GraphQLEnumTypeExtensions>>;
    /** AST node from which this schema element was built, if available. */
    astNode?: Maybe<EnumTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes?: Maybe<ReadonlyArray<EnumTypeExtensionNode>>;
}
/** @internal */
export interface GraphQLEnumTypeNormalizedConfig extends GraphQLEnumTypeConfig {
    values: GraphQLEnumValueNormalizedConfigMap;
    extensions: Readonly<GraphQLEnumTypeExtensions>;
    extensionASTNodes: ReadonlyArray<EnumTypeExtensionNode>;
}
/** A map of enum value names to enum value configuration objects. */
export type GraphQLEnumValueConfigMap = ObjMap<GraphQLEnumValueConfig>;
/** @internal */
export type GraphQLEnumValueNormalizedConfigMap = ObjMap<GraphQLEnumValueNormalizedConfig>;
/**
 * Custom extensions
 * @remarks
 * Use a unique identifier name for your extension, for example the name of
 * your library or project. Do not use a shortened identifier as this increases
 * the risk of conflicts. We recommend you add at most one extension field,
 * an object which can contain all the values you need.
 */
export interface GraphQLEnumValueExtensions {
    [attributeName: string | symbol]: unknown;
}
/** Configuration used to define a GraphQL enum value. */
export interface GraphQLEnumValueConfig {
    /** Human-readable description for this schema element, if provided. */
    description?: Maybe<string>;
    /** Parsed value represented by this node. */
    value?: any;
    /** Reason this element is deprecated, if one was provided. */
    deprecationReason?: Maybe<string>;
    /** Custom extension fields reserved for users. */
    extensions?: Maybe<Readonly<GraphQLEnumValueExtensions>>;
    /** AST node from which this schema element was built, if available. */
    astNode?: Maybe<EnumValueDefinitionNode>;
}
/** @internal */
export interface GraphQLEnumValueNormalizedConfig extends GraphQLEnumValueConfig {
    extensions: Readonly<GraphQLEnumValueExtensions>;
}
/** A resolved GraphQL enum value definition. */
export declare class GraphQLEnumValue implements GraphQLSchemaElement {
    /** Enum type that owns this enum value. */
    parentEnum: GraphQLEnumType;
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description: Maybe<string>;
    /** Parsed value represented by this node. */
    value: any;
    /** Reason this element is deprecated, if one was provided. */
    deprecationReason: Maybe<string>;
    /** Custom extension fields reserved for users. */
    extensions: Readonly<GraphQLEnumValueExtensions>;
    /** AST node from which this schema element was built, if available. */
    astNode: Maybe<EnumValueDefinitionNode>;
    /**
     * Creates a resolved GraphQL enum value definition.
     * @param parentEnum - Enum type that owns this enum value.
     * @param name - Enum value name.
     * @param config - Enum value configuration.
     * @example
     * ```ts
     * import { GraphQLEnumType, GraphQLEnumValue } from 'graphql/type';
     *
     * const Episode = new GraphQLEnumType({
     *   name: 'Episode',
     *   values: { NEW_HOPE: { value: 4 } },
     * });
     * const enumValue = new GraphQLEnumValue(Episode, 'EMPIRE', {
     *   value: 5,
     *   description: 'Released in 1980.',
     * });
     *
     * enumValue.parentEnum; // => Episode
     * enumValue.name; // => 'EMPIRE'
     * enumValue.value; // => 5
     * ```
     */
    constructor(parentEnum: GraphQLEnumType, name: string, config: GraphQLEnumValueConfig);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns a normalized configuration object for this enum value.
     * @returns A configuration object that can be used to recreate this enum value.
     * @example
     * ```ts
     * import { GraphQLEnumType, GraphQLEnumValue } from 'graphql/type';
     *
     * const Episode = new GraphQLEnumType({
     *   name: 'Episode',
     *   values: { NEW_HOPE: { value: 4 } },
     * });
     * const enumValue = new GraphQLEnumValue(Episode, 'EMPIRE', {
     *   value: 5,
     *   extensions: { trilogy: 'original' },
     * });
     *
     * enumValue.toConfig(); // => { description: undefined, value: 5, deprecationReason: undefined, extensions: { trilogy: 'original' }, astNode: undefined }
     * ```
     */
    toConfig(): GraphQLEnumValueNormalizedConfig;
    /**
     * Returns this enum value as a schema coordinate string.
     * @returns Enum value coordinate.
     * @example
     * ```ts
     * import { GraphQLEnumType, GraphQLEnumValue } from 'graphql/type';
     *
     * const Episode = new GraphQLEnumType({
     *   name: 'Episode',
     *   values: { NEW_HOPE: { value: 4 } },
     * });
     * const enumValue = new GraphQLEnumValue(Episode, 'EMPIRE', { value: 5 });
     *
     * enumValue.toString(); // => 'Episode.EMPIRE'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns Enum value coordinate.
     * @example
     * ```ts
     * import { GraphQLEnumType, GraphQLEnumValue } from 'graphql/type';
     *
     * const Episode = new GraphQLEnumType({
     *   name: 'Episode',
     *   values: { NEW_HOPE: { value: 4 } },
     * });
     * const enumValue = new GraphQLEnumValue(Episode, 'EMPIRE', { value: 5 });
     *
     * JSON.stringify(enumValue); // => '"Episode.EMPIRE"'
     * ```
     */
    toJSON(): string;
}
/**
 * Custom extensions
 * @remarks
 * Use a unique identifier name for your extension, for example the name of
 * your library or project. Do not use a shortened identifier as this increases
 * the risk of conflicts. We recommend you add at most one extension field,
 * an object which can contain all the values you need.
 */
export interface GraphQLInputObjectTypeExtensions {
    [attributeName: string | symbol]: unknown;
}
/**
 * Input Object Type Definition
 *
 * An input object defines a structured collection of fields which may be
 * supplied to a field argument.
 *
 * Using `NonNull` will ensure that a value must be provided by the query
 * @example
 * ```ts
 * const GeoPoint = new GraphQLInputObjectType({
 *   name: 'GeoPoint',
 *   fields: {
 *     lat: { type: new GraphQLNonNull(GraphQLFloat) },
 *     lon: { type: new GraphQLNonNull(GraphQLFloat) },
 *     alt: { type: GraphQLFloat, default: { value: 0 } },
 *   },
 * });
 * ```
 */
export declare class GraphQLInputObjectType implements GraphQLSchemaElement {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description: Maybe<string>;
    /** Custom extension fields reserved for users. */
    extensions: Readonly<GraphQLInputObjectTypeExtensions>;
    /** AST node from which this schema element was built, if available. */
    astNode: Maybe<InputObjectTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes: ReadonlyArray<InputObjectTypeExtensionNode>;
    /** Whether this input object uses the experimental OneOf input object semantics. */
    isOneOf: boolean;
    private _fields;
    /**
     * Creates a GraphQLInputObjectType instance.
     * @param config - Configuration describing this object.
     * @example
     * ```ts
     * import { parse } from 'graphql/language';
     * import {
     *   GraphQLID,
     *   GraphQLInputObjectType,
     *   GraphQLInt,
     *   GraphQLNonNull,
     *   GraphQLString,
     * } from 'graphql/type';
     *
     * const document = parse(`
     *   input ReviewInput {
     *     stars: Int!
     *     commentary: String
     *   }
     *
     *   extend input ReviewInput {
     *     body: String
     *   }
     * `);
     * const definition = document.definitions[0];
     *
     * const ReviewInput = new GraphQLInputObjectType({
     *   name: 'ReviewInput',
     *   description: 'Input collected when reviewing a product.',
     *   fields: {
     *     stars: {
     *       description: 'Star rating from one to five.',
     *       type: new GraphQLNonNull(GraphQLInt),
     *       extensions: { min: 1, max: 5 },
     *       astNode: definition.fields[0],
     *     },
     *     commentary: {
     *       type: GraphQLString,
     *       default: { value: '' },
     *       deprecationReason: 'Use body.',
     *       astNode: definition.fields[1],
     *     },
     *   },
     *   extensions: { form: 'review' },
     *   astNode: definition,
     *   extensionASTNodes: [document.definitions[1]],
     *   isOneOf: false,
     * });
     * const SearchBy = new GraphQLInputObjectType({
     *   name: 'SearchBy',
     *   fields: {
     *     id: { type: GraphQLID },
     *     slug: { type: GraphQLString },
     *   },
     *   isOneOf: true,
     * });
     *
     * const fields = ReviewInput.getFields();
     *
     * ReviewInput.description; // => 'Input collected when reviewing a product.'
     * String(fields.stars.type); // => 'Int!'
     * fields.stars.extensions; // => { min: 1, max: 5 }
     * fields.commentary.default.value; // => ''
     * fields.commentary.deprecationReason; // => 'Use body.'
     * ReviewInput.isOneOf; // => false
     * SearchBy.isOneOf; // => true
     * ```
     */
    constructor(config: Readonly<GraphQLInputObjectTypeConfig>);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns the fields defined by this type.
     * @returns The fields keyed by field name.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertInputObjectType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   input ReviewInput {
     *     stars: Int!
     *     commentary: String = ""
     *   }
     *
     *   type Query {
     *     reviews(filter: ReviewInput): [String]
     *   }
     * `);
     *
     * const ReviewInput = assertInputObjectType(schema.getType('ReviewInput'));
     * const fields = ReviewInput.getFields();
     *
     * Object.keys(fields); // => ['stars', 'commentary']
     * fields.commentary.default; // => { literal: { kind: 'StringValue', value: '' } }
     * ```
     */
    getFields(): GraphQLInputFieldMap;
    /**
     * Returns a normalized configuration object for this object.
     * @returns A configuration object that can be used to recreate this object.
     * @example
     * ```ts
     * import {
     *   GraphQLInputObjectType,
     *   GraphQLInt,
     *   GraphQLNonNull,
     * } from 'graphql/type';
     *
     * const ReviewInput = new GraphQLInputObjectType({
     *   name: 'ReviewInput',
     *   fields: {
     *     stars: { type: new GraphQLNonNull(GraphQLInt) },
     *   },
     * });
     *
     * const config = ReviewInput.toConfig();
     * const ReviewInputCopy = new GraphQLInputObjectType(config);
     *
     * String(config.fields.stars.type); // => 'Int!'
     * String(ReviewInputCopy.getFields().stars.type); // => 'Int!'
     * ```
     */
    toConfig(): GraphQLInputObjectTypeNormalizedConfig;
    /**
     * Returns the schema coordinate identifying this input object type.
     * @returns The schema coordinate for this input object type.
     * @example
     * ```ts
     * import { buildSchema } from 'graphql/utilities';
     * import { assertInputObjectType } from 'graphql/type';
     *
     * const schema = buildSchema(`
     *   input ReviewInput {
     *     stars: Int!
     *   }
     *
     *   type Query {
     *     reviews(filter: ReviewInput): [String]
     *   }
     * `);
     *
     * const ReviewInput = assertInputObjectType(schema.getType('ReviewInput'));
     *
     * ReviewInput.toString(); // => 'ReviewInput'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The JSON-serializable representation.
     * @example
     * ```ts
     * import { GraphQLInputObjectType, GraphQLString } from 'graphql/type';
     *
     * const ReviewInput = new GraphQLInputObjectType({
     *   name: 'ReviewInput',
     *   fields: {
     *     commentary: { type: GraphQLString },
     *   },
     * });
     *
     * ReviewInput.toJSON(); // => 'ReviewInput'
     * JSON.stringify({ type: ReviewInput }); // => '{"type":"ReviewInput"}'
     * ```
     */
    toJSON(): string;
}
/** Configuration used to construct a GraphQLInputObjectType. */
export interface GraphQLInputObjectTypeConfig {
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description?: Maybe<string>;
    /** Fields declared by this object, interface, input object, or literal. */
    fields: ThunkObjMap<GraphQLInputFieldConfig>;
    /** Custom extension fields reserved for users. */
    extensions?: Maybe<Readonly<GraphQLInputObjectTypeExtensions>>;
    /** AST node from which this schema element was built, if available. */
    astNode?: Maybe<InputObjectTypeDefinitionNode>;
    /** AST extension nodes applied to this schema element. */
    extensionASTNodes?: Maybe<ReadonlyArray<InputObjectTypeExtensionNode>>;
    /** Whether this input object uses the experimental OneOf input object semantics. */
    isOneOf?: boolean;
}
/** @internal */
export interface GraphQLInputObjectTypeNormalizedConfig extends GraphQLInputObjectTypeConfig {
    fields: GraphQLInputFieldNormalizedConfigMap;
    extensions: Readonly<GraphQLInputObjectTypeExtensions>;
    extensionASTNodes: ReadonlyArray<InputObjectTypeExtensionNode>;
}
/**
 * Custom extensions
 * @remarks
 * Use a unique identifier name for your extension, for example the name of
 * your library or project. Do not use a shortened identifier as this increases
 * the risk of conflicts. We recommend you add at most one extension field,
 * an object which can contain all the values you need.
 */
export interface GraphQLInputFieldExtensions {
    [attributeName: string | symbol]: unknown;
}
/** Configuration used to define a GraphQL input field. */
export interface GraphQLInputFieldConfig {
    /** Human-readable description for this schema element, if provided. */
    description?: Maybe<string>;
    /** The GraphQL type reference or runtime type for this element. */
    type: GraphQLInputType;
    /**
     * Deprecated legacy default value for this input field. Use `default`
     * instead.
     * @deprecated use `default` instead, `defaultValue` will be removed in v18
     */
    defaultValue?: unknown;
    /** Default value represented as either a runtime value or a GraphQL literal. */
    default?: GraphQLDefaultInput | undefined;
    /** Reason this element is deprecated, if one was provided. */
    deprecationReason?: Maybe<string>;
    /** Custom extension fields reserved for users. */
    extensions?: Maybe<Readonly<GraphQLInputFieldExtensions>>;
    /** AST node from which this schema element was built, if available. */
    astNode?: Maybe<InputValueDefinitionNode>;
}
/** A map of input field names to input field configuration objects. */
export type GraphQLInputFieldConfigMap = ObjMap<GraphQLInputFieldConfig>;
/** @internal */
export interface GraphQLInputFieldNormalizedConfig extends GraphQLInputFieldConfig {
    default: GraphQLDefaultInput | undefined;
    extensions: Readonly<GraphQLInputFieldExtensions>;
}
/** @internal */
export type GraphQLInputFieldNormalizedConfigMap = ObjMap<GraphQLInputFieldNormalizedConfig>;
/** A resolved GraphQL input field definition. */
export declare class GraphQLInputField implements GraphQLSchemaElement {
    /** Input object type that owns this input field. */
    parentType: GraphQLInputObjectType;
    /** The GraphQL name for this schema element. */
    name: string;
    /** Human-readable description for this schema element, if provided. */
    description: Maybe<string>;
    /** The GraphQL type reference or runtime type for this element. */
    type: GraphQLInputType;
    /**
     * Deprecated legacy default value used when no explicit value is supplied.
     * Use `default` instead.
     * @deprecated use `default` instead, `defaultValue` will be removed in v18
     */
    defaultValue: unknown;
    /** Default value represented as either a runtime value or a GraphQL literal. */
    default: GraphQLDefaultInput | undefined;
    /** Reason this element is deprecated, if one was provided. */
    deprecationReason: Maybe<string>;
    /** Custom extension fields reserved for users. */
    extensions: Readonly<GraphQLInputFieldExtensions>;
    /** AST node from which this schema element was built, if available. */
    astNode: Maybe<InputValueDefinitionNode>;
    /**
     * Creates a resolved GraphQL input field definition.
     * @param parentType - Input object type that owns this field.
     * @param name - Input field name.
     * @param config - Input field configuration.
     * @example
     * ```ts
     * import {
     *   GraphQLInputField,
     *   GraphQLInputObjectType,
     *   GraphQLString,
     * } from 'graphql/type';
     *
     * const ReviewInput = new GraphQLInputObjectType({
     *   name: 'ReviewInput',
     *   fields: {},
     * });
     * const field = new GraphQLInputField(ReviewInput, 'commentary', {
     *   type: GraphQLString,
     *   default: { value: '' },
     * });
     *
     * field.parentType; // => ReviewInput
     * field.name; // => 'commentary'
     * field.default.value; // => ''
     * ```
     */
    constructor(parentType: GraphQLInputObjectType, name: string, config: GraphQLInputFieldConfig);
    /**
     * Returns the value used by `Object.prototype.toString`.
     * @returns The built-in string tag for this object.
     */
    get [Symbol.toStringTag](): string;
    /**
     * Returns a normalized configuration object for this input field.
     * @returns A configuration object that can be used to recreate this input field.
     * @example
     * ```ts
     * import {
     *   GraphQLInputField,
     *   GraphQLInputObjectType,
     *   GraphQLString,
     * } from 'graphql/type';
     *
     * const ReviewInput = new GraphQLInputObjectType({
     *   name: 'ReviewInput',
     *   fields: {},
     * });
     * const field = new GraphQLInputField(ReviewInput, 'commentary', {
     *   type: GraphQLString,
     *   extensions: { form: 'review' },
     * });
     *
     * field.toConfig().extensions; // => { form: 'review' }
     * ```
     */
    toConfig(): GraphQLInputFieldNormalizedConfig;
    /**
     * Returns this input field as a schema coordinate string.
     * @returns The input field coordinate.
     * @example
     * ```ts
     * import {
     *   GraphQLInputField,
     *   GraphQLInputObjectType,
     *   GraphQLString,
     * } from 'graphql/type';
     *
     * const ReviewInput = new GraphQLInputObjectType({
     *   name: 'ReviewInput',
     *   fields: {},
     * });
     * const field = new GraphQLInputField(ReviewInput, 'commentary', {
     *   type: GraphQLString,
     * });
     *
     * field.toString(); // => 'ReviewInput.commentary'
     * ```
     */
    toString(): string;
    /**
     * Returns the JSON representation used when this object is serialized.
     * @returns The input field coordinate.
     * @example
     * ```ts
     * import {
     *   GraphQLInputField,
     *   GraphQLInputObjectType,
     *   GraphQLString,
     * } from 'graphql/type';
     *
     * const ReviewInput = new GraphQLInputObjectType({
     *   name: 'ReviewInput',
     *   fields: {},
     * });
     * const field = new GraphQLInputField(ReviewInput, 'commentary', {
     *   type: GraphQLString,
     * });
     *
     * JSON.stringify(field); // => '"ReviewInput.commentary"'
     * ```
     */
    toJSON(): string;
}
/**
 * Returns true when the input field is non-null and has no default value.
 * @param field - The input field definition to inspect.
 * @returns True when the input field is non-null and has no default value.
 * @example
 * ```ts
 * import {
 *   GraphQLInputField,
 *   GraphQLInputObjectType,
 *   GraphQLInt,
 *   GraphQLNonNull,
 *   GraphQLString,
 *   isRequiredInputField,
 * } from 'graphql/type';
 *
 * const ReviewInput = new GraphQLInputObjectType({
 *   name: 'ReviewInput',
 *   fields: {},
 * });
 * const requiredField = new GraphQLInputField(ReviewInput, 'id', {
 *   type: new GraphQLNonNull(GraphQLInt),
 * });
 * const optionalField = new GraphQLInputField(ReviewInput, 'name', {
 *   type: GraphQLString,
 * });
 * const fieldWithDefault = new GraphQLInputField(ReviewInput, 'limit', {
 *   type: new GraphQLNonNull(GraphQLInt),
 *   default: { value: 10 },
 * });
 *
 * isRequiredInputField(requiredField); // => true
 * isRequiredInputField(optionalField); // => false
 * isRequiredInputField(fieldWithDefault); // => false
 * ```
 */
export declare function isRequiredInputField(field: GraphQLInputField): boolean;
/** A map of input field names to resolved input field definitions. */
export type GraphQLInputFieldMap = ObjMap<GraphQLInputField>;
export {};