graphql/lib/validator/rules/KnownArgumentNames.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'];

var _interopRequireDefault = require('babel-runtime/helpers/interop-require-default')['default'];

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

exports['default'] = KnownArgumentNames;

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

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

var _utilsInvariant = require('../../utils/invariant');

var _utilsInvariant2 = _interopRequireDefault(_utilsInvariant);

var _utilsFind = require('../../utils/find');

var _utilsFind2 = _interopRequireDefault(_utilsFind);

/**
 * Known argument names
 *
 * A GraphQL field is only valid if all supplied arguments are defined by
 * that field.
 */

function KnownArgumentNames(context) {
  return {
    Argument: function Argument(node) {
      var fieldDef = context.getFieldDef();
      if (fieldDef) {
        var argDef = (0, _utilsFind2['default'])(fieldDef.args, function (arg) {
          return arg.name === node.name.value;
        });
        if (!argDef) {
          var parentType = context.getParentType();
          (0, _utilsInvariant2['default'])(parentType);
          return new _error.GraphQLError((0, _errors.unknownArgMessage)(node.name.value, fieldDef.name, parentType.name), [node]);
        }
      }
    }
  };
}

module.exports = exports['default'];