graphql/lib/utils/isNullish.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.
 */

/**
 * Returns true if a value is null, undefined, or NaN.
 */
"use strict";

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

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

exports["default"] = isNullish;

function isNullish(value) {
  return value === null || value === undefined || value !== value;
}

module.exports = exports["default"];