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1/*
2 * Licensed under the Apache License, Version 2.0 (the "License");
3 * you may not use this file except in compliance with the License.
4 * You may obtain a copy of the License at
5 *
6 * http://www.apache.org/licenses/LICENSE-2.0
7 *
8 * Unless required by applicable law or agreed to in writing, software
9 * distributed under the License is distributed on an "AS IS" BASIS,
10 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 * See the License for the specific language governing permissions and
12 * limitations under the License.
13 */
14
15'use strict';
16
17/**
18 * Internal Utility Class
19 * <p><a href="./diagrams-private/util.svg"><img src="./diagrams-private/util.svg" style="height:100%;"/></a></p>
20 * @private
21 * @class
22 * @memberof module:concerto-core
23 */
24class Util {
25
26 /**
27 * Returns true if the typeof the object === 'undefined' or
28 * the object === null.
29 * @param {Object} obj - the object to be tested
30 * @returns {boolean} true if the object is null or undefined
31 */
32 static isNull(obj) {
33 return(typeof(obj) === 'undefined' || obj === null);
34 }
35}
36
37module.exports = Util;