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/**
 * Copyright (c) 2015-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow strict
 */

/**
 * GraphQL.js provides a reference implementation for the GraphQL specification
 * but is also a useful utility for operating on GraphQL files and building
 * sophisticated tools.
 *
 * This primary module exports a general purpose function for fulfilling all
 * steps of the GraphQL specification in a single operation, but also includes
 * utilities for every part of the GraphQL specification:
 *
 *   - Parsing the GraphQL language.
 *   - Building a GraphQL type schema.
 *   - Validating a GraphQL request against a type schema.
 *   - Executing a GraphQL request against a type schema.
 *
 * This also includes utility functions for operating on GraphQL types and
 * GraphQL documents to facilitate building tools.
 *
 * You may also import from each sub-directory directly. For example, the
 * following two import statements are equivalent:
 *
 *     import { parse } from 'graphql';
 *     import { parse } from 'graphql/language';
 */

// The primary entry point into fulfilling a GraphQL request.
export type { GraphQLArgs } from './graphql';
export { graphql, graphqlSync } from './graphql';

// Create and operate on GraphQL type definitions and schema.
export {
  GraphQLSchema,
  // Definitions
  GraphQLScalarType,
  GraphQLObjectType,
  GraphQLInterfaceType,
  GraphQLUnionType,
  GraphQLEnumType,
  GraphQLInputObjectType,
  GraphQLList,
  GraphQLNonNull,
  GraphQLDirective,
  // "Enum" of Type Kinds
  TypeKind,
  // Scalars
  specifiedScalarTypes,
  GraphQLInt,
  GraphQLFloat,
  GraphQLString,
  GraphQLBoolean,
  GraphQLID,
  // Built-in Directives defined by the Spec
  specifiedDirectives,
  GraphQLIncludeDirective,
  GraphQLSkipDirective,
  GraphQLDeprecatedDirective,
  // Constant Deprecation Reason
  DEFAULT_DEPRECATION_REASON,
  // Meta-field definitions.
  SchemaMetaFieldDef,
  TypeMetaFieldDef,
  TypeNameMetaFieldDef,
  // GraphQL Types for introspection.
  introspectionTypes,
  __Schema,
  __Directive,
  __DirectiveLocation,
  __Type,
  __Field,
  __InputValue,
  __EnumValue,
  __TypeKind,
  // Predicates
  isSchema,
  isDirective,
  isType,
  isScalarType,
  isObjectType,
  isInterfaceType,
  isUnionType,
  isEnumType,
  isInputObjectType,
  isListType,
  isNonNullType,
  isInputType,
  isOutputType,
  isLeafType,
  isCompositeType,
  isAbstractType,
  isWrappingType,
  isNullableType,
  isNamedType,
  isSpecifiedScalarType,
  isIntrospectionType,
  isSpecifiedDirective,
  // Assertions
  assertType,
  assertScalarType,
  assertObjectType,
  assertInterfaceType,
  assertUnionType,
  assertEnumType,
  assertInputObjectType,
  assertListType,
  assertNonNullType,
  assertInputType,
  assertOutputType,
  assertLeafType,
  assertCompositeType,
  assertAbstractType,
  assertWrappingType,
  assertNullableType,
  assertNamedType,
  // Un-modifiers
  getNullableType,
  getNamedType,
  // Validate GraphQL schema.
  validateSchema,
  assertValidSchema,
} from './type';

export type {
  GraphQLType,
  GraphQLInputType,
  GraphQLOutputType,
  GraphQLLeafType,
  GraphQLCompositeType,
  GraphQLAbstractType,
  GraphQLWrappingType,
  GraphQLNullableType,
  GraphQLNamedType,
  Thunk,
  GraphQLSchemaConfig,
  GraphQLArgument,
  GraphQLArgumentConfig,
  GraphQLEnumTypeConfig,
  GraphQLEnumValue,
  GraphQLEnumValueConfig,
  GraphQLEnumValueConfigMap,
  GraphQLField,
  GraphQLFieldConfig,
  GraphQLFieldConfigArgumentMap,
  GraphQLFieldConfigMap,
  GraphQLFieldMap,
  GraphQLFieldResolver,
  GraphQLInputField,
  GraphQLInputFieldConfig,
  GraphQLInputFieldConfigMap,
  GraphQLInputFieldMap,
  GraphQLInputObjectTypeConfig,
  GraphQLInterfaceTypeConfig,
  GraphQLIsTypeOfFn,
  GraphQLObjectTypeConfig,
  GraphQLResolveInfo,
  ResponsePath,
  GraphQLScalarTypeConfig,
  GraphQLTypeResolver,
  GraphQLUnionTypeConfig,
  GraphQLDirectiveConfig,
} from './type';

// Parse and operate on GraphQL language source files.
export {
  Source,
  getLocation,
  // Parse
  parse,
  parseValue,
  parseType,
  // Print
  print,
  // Visit
  visit,
  visitInParallel,
  visitWithTypeInfo,
  getVisitFn,
  Kind,
  TokenKind,
  DirectiveLocation,
  BREAK,
} from './language';

export type {
  Lexer,
  ParseOptions,
  SourceLocation,
  // Visitor utilities
  ASTVisitor,
  Visitor,
  VisitFn,
  VisitorKeyMap,
  // AST nodes
  Location,
  Token,
  ASTNode,
  ASTKindToNode,
  NameNode,
  DocumentNode,
  DefinitionNode,
  ExecutableDefinitionNode,
  OperationDefinitionNode,
  OperationTypeNode,
  VariableDefinitionNode,
  VariableNode,
  SelectionSetNode,
  SelectionNode,
  FieldNode,
  ArgumentNode,
  FragmentSpreadNode,
  InlineFragmentNode,
  FragmentDefinitionNode,
  ValueNode,
  IntValueNode,
  FloatValueNode,
  StringValueNode,
  BooleanValueNode,
  NullValueNode,
  EnumValueNode,
  ListValueNode,
  ObjectValueNode,
  ObjectFieldNode,
  DirectiveNode,
  TypeNode,
  NamedTypeNode,
  ListTypeNode,
  NonNullTypeNode,
  TypeSystemDefinitionNode,
  SchemaDefinitionNode,
  OperationTypeDefinitionNode,
  TypeDefinitionNode,
  ScalarTypeDefinitionNode,
  ObjectTypeDefinitionNode,
  FieldDefinitionNode,
  InputValueDefinitionNode,
  InterfaceTypeDefinitionNode,
  UnionTypeDefinitionNode,
  EnumTypeDefinitionNode,
  EnumValueDefinitionNode,
  InputObjectTypeDefinitionNode,
  TypeExtensionNode,
  ObjectTypeExtensionNode,
  DirectiveDefinitionNode,
  KindEnum,
  TokenKindEnum,
  DirectiveLocationEnum,
} from './language';

// Execute GraphQL queries.
export {
  execute,
  defaultFieldResolver,
  responsePathAsArray,
  getDirectiveValues,
} from './execution';

export type { ExecutionArgs, ExecutionResult } from './execution';

export { subscribe, createSourceEventStream } from './subscription';

// Validate GraphQL queries.
export {
  validate,
  ValidationContext,
  // All validation rules in the GraphQL Specification.
  specifiedRules,
  // Individual validation rules.
  FieldsOnCorrectTypeRule,
  FragmentsOnCompositeTypesRule,
  KnownArgumentNamesRule,
  KnownDirectivesRule,
  KnownFragmentNamesRule,
  KnownTypeNamesRule,
  LoneAnonymousOperationRule,
  NoFragmentCyclesRule,
  NoUndefinedVariablesRule,
  NoUnusedFragmentsRule,
  NoUnusedVariablesRule,
  OverlappingFieldsCanBeMergedRule,
  PossibleFragmentSpreadsRule,
  ProvidedNonNullArgumentsRule,
  ScalarLeafsRule,
  SingleFieldSubscriptionsRule,
  UniqueArgumentNamesRule,
  UniqueDirectivesPerLocationRule,
  UniqueFragmentNamesRule,
  UniqueInputFieldNamesRule,
  UniqueOperationNamesRule,
  UniqueVariableNamesRule,
  ValuesOfCorrectTypeRule,
  VariablesAreInputTypesRule,
  VariablesDefaultValueAllowedRule,
  VariablesInAllowedPositionRule,
} from './validation';

// Create, format, and print GraphQL errors.
export { GraphQLError, formatError, printError } from './error';

export type { GraphQLFormattedError } from './error';

// Utilities for operating on GraphQL type schema and parsed sources.
export {
  // Produce the GraphQL query recommended for a full schema introspection.
  // Accepts optional IntrospectionOptions.
  getIntrospectionQuery,
  // Deprecated: use getIntrospectionQuery
  introspectionQuery,
  // Gets the target Operation from a Document
  getOperationAST,
  // Convert a GraphQLSchema to an IntrospectionQuery
  introspectionFromSchema,
  // Build a GraphQLSchema from an introspection result.
  buildClientSchema,
  // Build a GraphQLSchema from a parsed GraphQL Schema language AST.
  buildASTSchema,
  // Build a GraphQLSchema from a GraphQL schema language document.
  buildSchema,
  // Get the description from a schema AST node.
  getDescription,
  // Extends an existing GraphQLSchema from a parsed GraphQL Schema
  // language AST.
  extendSchema,
  // Sort a GraphQLSchema.
  lexicographicSortSchema,
  // Print a GraphQLSchema to GraphQL Schema language.
  printSchema,
  // Prints the built-in introspection schema in the Schema Language
  // format.
  printIntrospectionSchema,
  // Print a GraphQLType to GraphQL Schema language.
  printType,
  // Create a GraphQLType from a GraphQL language AST.
  typeFromAST,
  // Create a JavaScript value from a GraphQL language AST with a Type.
  valueFromAST,
  // Create a JavaScript value from a GraphQL language AST without a Type.
  valueFromASTUntyped,
  // Create a GraphQL language AST from a JavaScript value.
  astFromValue,
  // A helper to use within recursive-descent visitors which need to be aware of
  // the GraphQL type system.
  TypeInfo,
  // Coerces a JavaScript value to a GraphQL type, or produces errors.
  coerceValue,
  // @deprecated use coerceValue
  isValidJSValue,
  // Determine if AST values adhere to a GraphQL type.
  isValidLiteralValue,
  // Concatenates multiple AST together.
  concatAST,
  // Separates an AST into an AST per Operation.
  separateOperations,
  // Comparators for types
  isEqualType,
  isTypeSubTypeOf,
  doTypesOverlap,
  // Asserts a string is a valid GraphQL name.
  assertValidName,
  // Determine if a string is a valid GraphQL name.
  isValidNameError,
  // Compares two GraphQLSchemas and detects breaking changes.
  findBreakingChanges,
  findDangerousChanges,
  BreakingChangeType,
  DangerousChangeType,
  // Report all deprecated usage within a GraphQL document.
  findDeprecatedUsages,
} from './utilities';

export type {
  BuildSchemaOptions,
  BreakingChange,
  DangerousChange,
  IntrospectionOptions,
  IntrospectionDirective,
  IntrospectionEnumType,
  IntrospectionEnumValue,
  IntrospectionField,
  IntrospectionInputObjectType,
  IntrospectionInputType,
  IntrospectionInputTypeRef,
  IntrospectionInputValue,
  IntrospectionInterfaceType,
  IntrospectionListTypeRef,
  IntrospectionNamedTypeRef,
  IntrospectionNonNullTypeRef,
  IntrospectionObjectType,
  IntrospectionOutputType,
  IntrospectionOutputTypeRef,
  IntrospectionQuery,
  IntrospectionScalarType,
  IntrospectionSchema,
  IntrospectionType,
  IntrospectionTypeRef,
  IntrospectionUnionType,
} from './utilities';




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