graphql/lib/validator/rules/KnownTypeNames.js

A Query Language and Runtime which can target any service.

/* @flow */
/**
 *  Copyright (c) 2015, Facebook, Inc.
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  LICENSE file in the root directory of this source tree. An additional grant
 *  of patent rights can be found in the PATENTS file in the same directory.
 */

'use strict';

var _Object$defineProperty = require('babel-runtime/core-js/object/define-property')['default'];

_Object$defineProperty(exports, '__esModule', {
  value: true
});

exports['default'] = KnownTypeNames;

var _error = require('../../error');

var _errors = require('../errors');

/**
 * Known type names
 *
 * A GraphQL document is only valid if referenced types (specifically
 * variable definitions and fragment conditions) are defined by the type schema.
 */

function KnownTypeNames(context) {
  return {
    Name: function Name(node, key) {
      if (key === 'type' || key === 'typeCondition') {
        var typeName = node.value;
        var type = context.getSchema().getType(typeName);
        if (!type) {
          return new _error.GraphQLError((0, _errors.unknownTypeMessage)(typeName), [node]);
        }
      }
    }
  };
}

module.exports = exports['default'];