1/*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16/**
17 * A simple utility class.
18 */
19declare class Utility {
20  /**
21   * Constructor for Utility.
22   */
23  constructor();
24
25  /**
26   * Concatenates two strings.
27   * @param {string} str1 - The first string.
28   * @param {string} str2 - The second string.
29   * @returns {string} The concatenated string.
30   */
31  concatenateStrings(str1: string, str2: string): string;
32
33  /**
34   * A method to check if a number is even.
35   * @param {number} num - The number to check.
36   * @returns {boolean} True if the number is even, false otherwise.
37   */
38  isEven(num: number): boolean;
39}
40
41/**
42 * An interface representing a user profile.
43 * @interface
44 */
45declare interface UserProfile {
46  username: string;
47  age: number;
48}
49
50/**
51 * A function to greet a user.
52 * @param {UserProfile} user - The user profile.
53 * @returns {string} A personalized greeting.
54 */
55declare function greetUser(user: UserProfile): string;
56