graphql/type/definition.js

A Query Language and Runtime which can target any service.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isType = isType;
exports.assertType = assertType;
exports.isScalarType = isScalarType;
exports.assertScalarType = assertScalarType;
exports.isObjectType = isObjectType;
exports.assertObjectType = assertObjectType;
exports.isInterfaceType = isInterfaceType;
exports.assertInterfaceType = assertInterfaceType;
exports.isUnionType = isUnionType;
exports.assertUnionType = assertUnionType;
exports.isEnumType = isEnumType;
exports.assertEnumType = assertEnumType;
exports.isInputObjectType = isInputObjectType;
exports.assertInputObjectType = assertInputObjectType;
exports.isListType = isListType;
exports.assertListType = assertListType;
exports.isNonNullType = isNonNullType;
exports.assertNonNullType = assertNonNullType;
exports.isInputType = isInputType;
exports.assertInputType = assertInputType;
exports.isOutputType = isOutputType;
exports.assertOutputType = assertOutputType;
exports.isLeafType = isLeafType;
exports.assertLeafType = assertLeafType;
exports.isCompositeType = isCompositeType;
exports.assertCompositeType = assertCompositeType;
exports.isAbstractType = isAbstractType;
exports.assertAbstractType = assertAbstractType;
exports.GraphQLList = GraphQLList;
exports.GraphQLNonNull = GraphQLNonNull;
exports.isWrappingType = isWrappingType;
exports.assertWrappingType = assertWrappingType;
exports.isNullableType = isNullableType;
exports.assertNullableType = assertNullableType;
exports.getNullableType = getNullableType;
exports.isNamedType = isNamedType;
exports.assertNamedType = assertNamedType;
exports.getNamedType = getNamedType;
exports.isRequiredArgument = isRequiredArgument;
exports.isRequiredInputField = isRequiredInputField;
exports.GraphQLInputObjectType = exports.GraphQLEnumType = exports.GraphQLUnionType = exports.GraphQLInterfaceType = exports.GraphQLObjectType = exports.GraphQLScalarType = void 0;

var _defineToJSON = _interopRequireDefault(require("../jsutils/defineToJSON"));

var _defineToStringTag = _interopRequireDefault(require("../jsutils/defineToStringTag"));

var _instanceOf = _interopRequireDefault(require("../jsutils/instanceOf"));

var _inspect = _interopRequireDefault(require("../jsutils/inspect"));

var _invariant = _interopRequireDefault(require("../jsutils/invariant"));

var _keyMap = _interopRequireDefault(require("../jsutils/keyMap"));

var _kinds = require("../language/kinds");

var _valueFromASTUntyped = require("../utilities/valueFromASTUntyped");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function isType(type) {
  return isScalarType(type) || isObjectType(type) || isInterfaceType(type) || isUnionType(type) || isEnumType(type) || isInputObjectType(type) || isListType(type) || isNonNullType(type);
}

function assertType(type) {
  !isType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL type.")) : void 0;
  return type;
}
/**
 * There are predicates for each kind of GraphQL type.
 */


// eslint-disable-next-line no-redeclare
function isScalarType(type) {
  return (0, _instanceOf.default)(type, GraphQLScalarType);
}

function assertScalarType(type) {
  !isScalarType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL Scalar type.")) : void 0;
  return type;
}

// eslint-disable-next-line no-redeclare
function isObjectType(type) {
  return (0, _instanceOf.default)(type, GraphQLObjectType);
}

function assertObjectType(type) {
  !isObjectType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL Object type.")) : void 0;
  return type;
}

// eslint-disable-next-line no-redeclare
function isInterfaceType(type) {
  return (0, _instanceOf.default)(type, GraphQLInterfaceType);
}

function assertInterfaceType(type) {
  !isInterfaceType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL Interface type.")) : void 0;
  return type;
}

// eslint-disable-next-line no-redeclare
function isUnionType(type) {
  return (0, _instanceOf.default)(type, GraphQLUnionType);
}

function assertUnionType(type) {
  !isUnionType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL Union type.")) : void 0;
  return type;
}

// eslint-disable-next-line no-redeclare
function isEnumType(type) {
  return (0, _instanceOf.default)(type, GraphQLEnumType);
}

function assertEnumType(type) {
  !isEnumType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL Enum type.")) : void 0;
  return type;
}

// eslint-disable-next-line no-redeclare
function isInputObjectType(type) {
  return (0, _instanceOf.default)(type, GraphQLInputObjectType);
}

function assertInputObjectType(type) {
  !isInputObjectType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL Input Object type.")) : void 0;
  return type;
}

// eslint-disable-next-line no-redeclare
function isListType(type) {
  return (0, _instanceOf.default)(type, GraphQLList);
}

function assertListType(type) {
  !isListType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL List type.")) : void 0;
  return type;
}

// eslint-disable-next-line no-redeclare
function isNonNullType(type) {
  return (0, _instanceOf.default)(type, GraphQLNonNull);
}

function assertNonNullType(type) {
  !isNonNullType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL Non-Null type.")) : void 0;
  return type;
}
/**
 * These types may be used as input types for arguments and directives.
 */


function isInputType(type) {
  return isScalarType(type) || isEnumType(type) || isInputObjectType(type) || isWrappingType(type) && isInputType(type.ofType);
}

function assertInputType(type) {
  !isInputType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL input type.")) : void 0;
  return type;
}
/**
 * These types may be used as output types as the result of fields.
 */


function isOutputType(type) {
  return isScalarType(type) || isObjectType(type) || isInterfaceType(type) || isUnionType(type) || isEnumType(type) || isWrappingType(type) && isOutputType(type.ofType);
}

function assertOutputType(type) {
  !isOutputType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL output type.")) : void 0;
  return type;
}
/**
 * These types may describe types which may be leaf values.
 */


function isLeafType(type) {
  return isScalarType(type) || isEnumType(type);
}

function assertLeafType(type) {
  !isLeafType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL leaf type.")) : void 0;
  return type;
}
/**
 * These types may describe the parent context of a selection set.
 */


function isCompositeType(type) {
  return isObjectType(type) || isInterfaceType(type) || isUnionType(type);
}

function assertCompositeType(type) {
  !isCompositeType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL composite type.")) : void 0;
  return type;
}
/**
 * These types may describe the parent context of a selection set.
 */


function isAbstractType(type) {
  return isInterfaceType(type) || isUnionType(type);
}

function assertAbstractType(type) {
  !isAbstractType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL abstract type.")) : void 0;
  return type;
}
/**
 * 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.
 *
 * Example:
 *
 *     const PersonType = new GraphQLObjectType({
 *       name: 'Person',
 *       fields: () => ({
 *         parents: { type: GraphQLList(PersonType) },
 *         children: { type: GraphQLList(PersonType) },
 *       })
 *     })
 *
 */


// eslint-disable-next-line no-redeclare
function GraphQLList(ofType) {
  if (this instanceof GraphQLList) {
    this.ofType = assertType(ofType);
  } else {
    return new GraphQLList(ofType);
  }
} // Need to cast through any to alter the prototype.


GraphQLList.prototype.toString = function toString() {
  return '[' + String(this.ofType) + ']';
};

(0, _defineToJSON.default)(GraphQLList);
/**
 * 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.
 *
 * Example:
 *
 *     const RowType = new GraphQLObjectType({
 *       name: 'Row',
 *       fields: () => ({
 *         id: { type: GraphQLNonNull(GraphQLString) },
 *       })
 *     })
 *
 * Note: the enforcement of non-nullability occurs within the executor.
 */

// eslint-disable-next-line no-redeclare
function GraphQLNonNull(ofType) {
  if (this instanceof GraphQLNonNull) {
    this.ofType = assertNullableType(ofType);
  } else {
    return new GraphQLNonNull(ofType);
  }
} // Need to cast through any to alter the prototype.


GraphQLNonNull.prototype.toString = function toString() {
  return String(this.ofType) + '!';
};

(0, _defineToJSON.default)(GraphQLNonNull);
/**
 * These types wrap and modify other types
 */

function isWrappingType(type) {
  return isListType(type) || isNonNullType(type);
}

function assertWrappingType(type) {
  !isWrappingType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL wrapping type.")) : void 0;
  return type;
}
/**
 * These types can all accept null as a value.
 */


function isNullableType(type) {
  return isType(type) && !isNonNullType(type);
}

function assertNullableType(type) {
  !isNullableType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL nullable type.")) : void 0;
  return type;
}
/* eslint-disable no-redeclare */


function getNullableType(type) {
  /* eslint-enable no-redeclare */
  if (type) {
    return isNonNullType(type) ? type.ofType : type;
  }
}
/**
 * These named types do not include modifiers like List or NonNull.
 */


function isNamedType(type) {
  return isScalarType(type) || isObjectType(type) || isInterfaceType(type) || isUnionType(type) || isEnumType(type) || isInputObjectType(type);
}

function assertNamedType(type) {
  !isNamedType(type) ? (0, _invariant.default)(0, "Expected ".concat((0, _inspect.default)(type), " to be a GraphQL named type.")) : void 0;
  return type;
}
/* eslint-disable no-redeclare */


function getNamedType(type) {
  /* eslint-enable no-redeclare */
  if (type) {
    var unwrappedType = type;

    while (isWrappingType(unwrappedType)) {
      unwrappedType = unwrappedType.ofType;
    }

    return unwrappedType;
  }
}
/**
 * Used while defining GraphQL types to allow for circular references in
 * otherwise immutable type definitions.
 */


function resolveThunk(thunk) {
  return typeof thunk === 'function' ? thunk() : thunk;
}
/**
 * Scalar Type Definition
 *
 * The leaf values of any request and input values to arguments are
 * Scalars (or Enums) and are defined with a name and a series of functions
 * used to parse input from ast or variables and to ensure validity.
 *
 * If a type's serialize function 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. If the serialize function returns `null`, then no error will
 * be included in the response.
 *
 * Example:
 *
 *     const OddType = new GraphQLScalarType({
 *       name: 'Odd',
 *       serialize(value) {
 *         if (value % 2 === 1) {
 *           return value;
 *         }
 *       }
 *     });
 *
 */


var GraphQLScalarType =
/*#__PURE__*/
function () {
  function GraphQLScalarType(config) {
    _defineProperty(this, "name", void 0);

    _defineProperty(this, "description", void 0);

    _defineProperty(this, "serialize", void 0);

    _defineProperty(this, "parseValue", void 0);

    _defineProperty(this, "parseLiteral", void 0);

    _defineProperty(this, "astNode", void 0);

    _defineProperty(this, "extensionASTNodes", void 0);

    this.name = config.name;
    this.description = config.description;
    this.serialize = config.serialize;

    this.parseValue = config.parseValue || function (value) {
      return value;
    };

    this.parseLiteral = config.parseLiteral || _valueFromASTUntyped.valueFromASTUntyped;
    this.astNode = config.astNode;
    this.extensionASTNodes = config.extensionASTNodes;
    !(typeof config.name === 'string') ? (0, _invariant.default)(0, 'Must provide name.') : void 0;
    !(typeof config.serialize === 'function') ? (0, _invariant.default)(0, "".concat(this.name, " must provide \"serialize\" function. If this custom Scalar ") + 'is also used as an input type, ensure "parseValue" and "parseLiteral" ' + 'functions are also provided.') : void 0;

    if (config.parseValue || config.parseLiteral) {
      !(typeof config.parseValue === 'function' && typeof config.parseLiteral === 'function') ? (0, _invariant.default)(0, "".concat(this.name, " must provide both \"parseValue\" and \"parseLiteral\" ") + 'functions.') : void 0;
    }
  }

  var _proto = GraphQLScalarType.prototype;

  _proto.toString = function toString() {
    return this.name;
  };

  return GraphQLScalarType;
}(); // Conditionally apply `[Symbol.toStringTag]` if `Symbol`s are supported


exports.GraphQLScalarType = GraphQLScalarType;
(0, _defineToStringTag.default)(GraphQLScalarType);
(0, _defineToJSON.default)(GraphQLScalarType);

/**
 * 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.
 *
 * Example:
 *
 *     const AddressType = new GraphQLObjectType({
 *       name: 'Address',
 *       fields: {
 *         street: { type: GraphQLString },
 *         number: { type: GraphQLInt },
 *         formatted: {
 *           type: GraphQLString,
 *           resolve(obj) {
 *             return obj.number + ' ' + obj.street
 *           }
 *         }
 *       }
 *     });
 *
 * 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.
 *
 * Example:
 *
 *     const PersonType = new GraphQLObjectType({
 *       name: 'Person',
 *       fields: () => ({
 *         name: { type: GraphQLString },
 *         bestFriend: { type: PersonType },
 *       })
 *     });
 *
 */
var GraphQLObjectType =
/*#__PURE__*/
function () {
  function GraphQLObjectType(config) {
    _defineProperty(this, "name", void 0);

    _defineProperty(this, "description", void 0);

    _defineProperty(this, "astNode", void 0);

    _defineProperty(this, "extensionASTNodes", void 0);

    _defineProperty(this, "isTypeOf", void 0);

    _defineProperty(this, "_fields", void 0);

    _defineProperty(this, "_interfaces", void 0);

    this.name = config.name;
    this.description = config.description;
    this.astNode = config.astNode;
    this.extensionASTNodes = config.extensionASTNodes;
    this.isTypeOf = config.isTypeOf;
    this._fields = defineFieldMap.bind(undefined, config);
    this._interfaces = defineInterfaces.bind(undefined, config);
    !(typeof config.name === 'string') ? (0, _invariant.default)(0, 'Must provide name.') : void 0;
    !(config.isTypeOf == null || typeof config.isTypeOf === 'function') ? (0, _invariant.default)(0, "".concat(this.name, " must provide \"isTypeOf\" as a function, ") + "but got: ".concat((0, _inspect.default)(config.isTypeOf), ".")) : void 0;
  }

  var _proto2 = GraphQLObjectType.prototype;

  _proto2.getFields = function getFields() {
    if (typeof this._fields === 'function') {
      this._fields = this._fields();
    }

    return this._fields;
  };

  _proto2.getInterfaces = function getInterfaces() {
    if (typeof this._interfaces === 'function') {
      this._interfaces = this._interfaces();
    }

    return this._interfaces;
  };

  _proto2.toString = function toString() {
    return this.name;
  };

  return GraphQLObjectType;
}(); // Conditionally apply `[Symbol.toStringTag]` if `Symbol`s are supported


exports.GraphQLObjectType = GraphQLObjectType;
(0, _defineToStringTag.default)(GraphQLObjectType);
(0, _defineToJSON.default)(GraphQLObjectType);

function defineInterfaces(config) {
  var interfaces = resolveThunk(config.interfaces) || [];
  !Array.isArray(interfaces) ? (0, _invariant.default)(0, "".concat(config.name, " interfaces must be an Array or a function which returns ") + 'an Array.') : void 0;
  return interfaces;
}

function defineFieldMap(config) {
  var fieldMap = resolveThunk(config.fields) || {};
  !isPlainObj(fieldMap) ? (0, _invariant.default)(0, "".concat(config.name, " fields must be an object with field names as keys or a ") + 'function which returns such an object.') : void 0;
  var resultFieldMap = Object.create(null);

  var _arr = Object.keys(fieldMap);

  var _loop = function _loop() {
    var fieldName = _arr[_i];
    var fieldConfig = fieldMap[fieldName];
    !isPlainObj(fieldConfig) ? (0, _invariant.default)(0, "".concat(config.name, ".").concat(fieldName, " field config must be an object")) : void 0;
    !!fieldConfig.hasOwnProperty('isDeprecated') ? (0, _invariant.default)(0, "".concat(config.name, ".").concat(fieldName, " should provide \"deprecationReason\" ") + 'instead of "isDeprecated".') : void 0;

    var field = _objectSpread({}, fieldConfig, {
      isDeprecated: Boolean(fieldConfig.deprecationReason),
      name: fieldName
    });

    !(field.resolve == null || typeof field.resolve === 'function') ? (0, _invariant.default)(0, "".concat(config.name, ".").concat(fieldName, " field resolver must be a function if ") + "provided, but got: ".concat((0, _inspect.default)(field.resolve), ".")) : void 0;
    var argsConfig = fieldConfig.args;

    if (!argsConfig) {
      field.args = [];
    } else {
      !isPlainObj(argsConfig) ? (0, _invariant.default)(0, "".concat(config.name, ".").concat(fieldName, " args must be an object with argument ") + 'names as keys.') : void 0;
      field.args = Object.keys(argsConfig).map(function (argName) {
        var arg = argsConfig[argName];
        return {
          name: argName,
          description: arg.description === undefined ? null : arg.description,
          type: arg.type,
          defaultValue: arg.defaultValue,
          astNode: arg.astNode
        };
      });
    }

    resultFieldMap[fieldName] = field;
  };

  for (var _i = 0; _i < _arr.length; _i++) {
    _loop();
  }

  return resultFieldMap;
}

function isPlainObj(obj) {
  return obj && _typeof(obj) === 'object' && !Array.isArray(obj);
}

function isRequiredArgument(arg) {
  return isNonNullType(arg.type) && arg.defaultValue === undefined;
}

/**
 * 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.
 *
 * Example:
 *
 *     const EntityType = new GraphQLInterfaceType({
 *       name: 'Entity',
 *       fields: {
 *         name: { type: GraphQLString }
 *       }
 *     });
 *
 */
var GraphQLInterfaceType =
/*#__PURE__*/
function () {
  function GraphQLInterfaceType(config) {
    _defineProperty(this, "name", void 0);

    _defineProperty(this, "description", void 0);

    _defineProperty(this, "astNode", void 0);

    _defineProperty(this, "extensionASTNodes", void 0);

    _defineProperty(this, "resolveType", void 0);

    _defineProperty(this, "_fields", void 0);

    this.name = config.name;
    this.description = config.description;
    this.astNode = config.astNode;
    this.extensionASTNodes = config.extensionASTNodes;
    this.resolveType = config.resolveType;
    this._fields = defineFieldMap.bind(undefined, config);
    !(typeof config.name === 'string') ? (0, _invariant.default)(0, 'Must provide name.') : void 0;
    !(config.resolveType == null || typeof config.resolveType === 'function') ? (0, _invariant.default)(0, "".concat(this.name, " must provide \"resolveType\" as a function, ") + "but got: ".concat((0, _inspect.default)(config.resolveType), ".")) : void 0;
  }

  var _proto3 = GraphQLInterfaceType.prototype;

  _proto3.getFields = function getFields() {
    if (typeof this._fields === 'function') {
      this._fields = this._fields();
    }

    return this._fields;
  };

  _proto3.toString = function toString() {
    return this.name;
  };

  return GraphQLInterfaceType;
}(); // Conditionally apply `[Symbol.toStringTag]` if `Symbol`s are supported


exports.GraphQLInterfaceType = GraphQLInterfaceType;
(0, _defineToStringTag.default)(GraphQLInterfaceType);
(0, _defineToJSON.default)(GraphQLInterfaceType);

/**
 * 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.
 *
 * Example:
 *
 *     const PetType = new GraphQLUnionType({
 *       name: 'Pet',
 *       types: [ DogType, CatType ],
 *       resolveType(value) {
 *         if (value instanceof Dog) {
 *           return DogType;
 *         }
 *         if (value instanceof Cat) {
 *           return CatType;
 *         }
 *       }
 *     });
 *
 */
var GraphQLUnionType =
/*#__PURE__*/
function () {
  function GraphQLUnionType(config) {
    _defineProperty(this, "name", void 0);

    _defineProperty(this, "description", void 0);

    _defineProperty(this, "astNode", void 0);

    _defineProperty(this, "extensionASTNodes", void 0);

    _defineProperty(this, "resolveType", void 0);

    _defineProperty(this, "_types", void 0);

    this.name = config.name;
    this.description = config.description;
    this.astNode = config.astNode;
    this.extensionASTNodes = config.extensionASTNodes;
    this.resolveType = config.resolveType;
    this._types = defineTypes.bind(undefined, config);
    !(typeof config.name === 'string') ? (0, _invariant.default)(0, 'Must provide name.') : void 0;
    !(config.resolveType == null || typeof config.resolveType === 'function') ? (0, _invariant.default)(0, "".concat(this.name, " must provide \"resolveType\" as a function, ") + "but got: ".concat((0, _inspect.default)(config.resolveType), ".")) : void 0;
  }

  var _proto4 = GraphQLUnionType.prototype;

  _proto4.getTypes = function getTypes() {
    if (typeof this._types === 'function') {
      this._types = this._types();
    }

    return this._types;
  };

  _proto4.toString = function toString() {
    return this.name;
  };

  return GraphQLUnionType;
}(); // Conditionally apply `[Symbol.toStringTag]` if `Symbol`s are supported


exports.GraphQLUnionType = GraphQLUnionType;
(0, _defineToStringTag.default)(GraphQLUnionType);
(0, _defineToJSON.default)(GraphQLUnionType);

function defineTypes(config) {
  var types = resolveThunk(config.types) || [];
  !Array.isArray(types) ? (0, _invariant.default)(0, 'Must provide Array of types or a function which returns ' + "such an array for Union ".concat(config.name, ".")) : void 0;
  return types;
}

/**
 * Enum Type Definition
 *
 * Some leaf values of requests and input values are Enums. GraphQL serializes
 * Enum values as strings, however internally Enums can be represented by any
 * kind of type, often integers.
 *
 * Example:
 *
 *     const RGBType = new GraphQLEnumType({
 *       name: 'RGB',
 *       values: {
 *         RED: { value: 0 },
 *         GREEN: { value: 1 },
 *         BLUE: { value: 2 }
 *       }
 *     });
 *
 * Note: If a value is not provided in a definition, the name of the enum value
 * will be used as its internal value.
 */
var GraphQLEnumType
/* <T> */
=
/*#__PURE__*/
function () {
  function GraphQLEnumType(config
  /* <T> */
  ) {
    _defineProperty(this, "name", void 0);

    _defineProperty(this, "description", void 0);

    _defineProperty(this, "astNode", void 0);

    _defineProperty(this, "extensionASTNodes", void 0);

    _defineProperty(this, "_values", void 0);

    _defineProperty(this, "_valueLookup", void 0);

    _defineProperty(this, "_nameLookup", void 0);

    this.name = config.name;
    this.description = config.description;
    this.astNode = config.astNode;
    this.extensionASTNodes = config.extensionASTNodes;
    this._values = defineEnumValues(this, config.values);
    this._valueLookup = new Map(this._values.map(function (enumValue) {
      return [enumValue.value, enumValue];
    }));
    this._nameLookup = (0, _keyMap.default)(this._values, function (value) {
      return value.name;
    });
    !(typeof config.name === 'string') ? (0, _invariant.default)(0, 'Must provide name.') : void 0;
  }

  var _proto5 = GraphQLEnumType.prototype;

  _proto5.getValues = function getValues() {
    return this._values;
  };

  _proto5.getValue = function getValue(name) {
    return this._nameLookup[name];
  };

  _proto5.serialize = function serialize(value
  /* T */
  ) {
    var enumValue = this._valueLookup.get(value);

    if (enumValue) {
      return enumValue.name;
    }
  };

  _proto5.parseValue = function parseValue(value)
  /* T */
  {
    if (typeof value === 'string') {
      var enumValue = this.getValue(value);

      if (enumValue) {
        return enumValue.value;
      }
    }
  };

  _proto5.parseLiteral = function parseLiteral(valueNode, _variables)
  /* T */
  {
    // Note: variables will be resolved to a value before calling this function.
    if (valueNode.kind === _kinds.Kind.ENUM) {
      var enumValue = this.getValue(valueNode.value);

      if (enumValue) {
        return enumValue.value;
      }
    }
  };

  _proto5.toString = function toString() {
    return this.name;
  };

  return GraphQLEnumType;
}(); // Conditionally apply `[Symbol.toStringTag]` if `Symbol`s are supported


exports.GraphQLEnumType = GraphQLEnumType;
(0, _defineToStringTag.default)(GraphQLEnumType);
(0, _defineToJSON.default)(GraphQLEnumType);

function defineEnumValues(type, valueMap
/* <T> */
) {
  !isPlainObj(valueMap) ? (0, _invariant.default)(0, "".concat(type.name, " values must be an object with value names as keys.")) : void 0;
  return Object.keys(valueMap).map(function (valueName) {
    var value = valueMap[valueName];
    !isPlainObj(value) ? (0, _invariant.default)(0, "".concat(type.name, ".").concat(valueName, " must refer to an object with a \"value\" key ") + "representing an internal value but got: ".concat((0, _inspect.default)(value), ".")) : void 0;
    !!value.hasOwnProperty('isDeprecated') ? (0, _invariant.default)(0, "".concat(type.name, ".").concat(valueName, " should provide \"deprecationReason\" instead ") + 'of "isDeprecated".') : void 0;
    return {
      name: valueName,
      description: value.description,
      isDeprecated: Boolean(value.deprecationReason),
      deprecationReason: value.deprecationReason,
      astNode: value.astNode,
      value: value.hasOwnProperty('value') ? value.value : valueName
    };
  });
}

/**
 * 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:
 *
 *     const GeoPoint = new GraphQLInputObjectType({
 *       name: 'GeoPoint',
 *       fields: {
 *         lat: { type: GraphQLNonNull(GraphQLFloat) },
 *         lon: { type: GraphQLNonNull(GraphQLFloat) },
 *         alt: { type: GraphQLFloat, defaultValue: 0 },
 *       }
 *     });
 *
 */
var GraphQLInputObjectType =
/*#__PURE__*/
function () {
  function GraphQLInputObjectType(config) {
    _defineProperty(this, "name", void 0);

    _defineProperty(this, "description", void 0);

    _defineProperty(this, "astNode", void 0);

    _defineProperty(this, "extensionASTNodes", void 0);

    _defineProperty(this, "_fields", void 0);

    this.name = config.name;
    this.description = config.description;
    this.astNode = config.astNode;
    this.extensionASTNodes = config.extensionASTNodes;
    this._fields = defineInputFieldMap.bind(undefined, config);
    !(typeof config.name === 'string') ? (0, _invariant.default)(0, 'Must provide name.') : void 0;
  }

  var _proto6 = GraphQLInputObjectType.prototype;

  _proto6.getFields = function getFields() {
    if (typeof this._fields === 'function') {
      this._fields = this._fields();
    }

    return this._fields;
  };

  _proto6.toString = function toString() {
    return this.name;
  };

  return GraphQLInputObjectType;
}(); // Conditionally apply `[Symbol.toStringTag]` if `Symbol`s are supported


exports.GraphQLInputObjectType = GraphQLInputObjectType;
(0, _defineToStringTag.default)(GraphQLInputObjectType);
(0, _defineToJSON.default)(GraphQLInputObjectType);

function defineInputFieldMap(config) {
  var fieldMap = resolveThunk(config.fields) || {};
  !isPlainObj(fieldMap) ? (0, _invariant.default)(0, "".concat(config.name, " fields must be an object with field names as keys or a ") + 'function which returns such an object.') : void 0;
  var resultFieldMap = Object.create(null);

  var _arr2 = Object.keys(fieldMap);

  for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
    var fieldName = _arr2[_i2];

    var field = _objectSpread({}, fieldMap[fieldName], {
      name: fieldName
    });

    !!field.hasOwnProperty('resolve') ? (0, _invariant.default)(0, "".concat(config.name, ".").concat(fieldName, " field has a resolve property, but ") + 'Input Types cannot define resolvers.') : void 0;
    resultFieldMap[fieldName] = field;
  }

  return resultFieldMap;
}

function isRequiredInputField(field) {
  return isNonNullType(field.type) && field.defaultValue === undefined;
}