13af6ab5fSopenharmony_ci/*
23af6ab5fSopenharmony_ci * Copyright (c) 2023 Huawei Device Co., Ltd.
33af6ab5fSopenharmony_ci * Licensed under the Apache License, Version 2.0 (the "License");
43af6ab5fSopenharmony_ci * you may not use this file except in compliance with the License.
53af6ab5fSopenharmony_ci * You may obtain a copy of the License at
63af6ab5fSopenharmony_ci *
73af6ab5fSopenharmony_ci *     http://www.apache.org/licenses/LICENSE-2.0
83af6ab5fSopenharmony_ci *
93af6ab5fSopenharmony_ci * Unless required by applicable law or agreed to in writing, software
103af6ab5fSopenharmony_ci * distributed under the License is distributed on an "AS IS" BASIS,
113af6ab5fSopenharmony_ci * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
123af6ab5fSopenharmony_ci * See the License for the specific language governing permissions and
133af6ab5fSopenharmony_ci * limitations under the License.
143af6ab5fSopenharmony_ci */
153af6ab5fSopenharmony_cideclare class Utility {
163af6ab5fSopenharmony_ci    constructor();
173af6ab5fSopenharmony_ci    /**
183af6ab5fSopenharmony_ci     * Concatenates two strings.
193af6ab5fSopenharmony_ci     * @param {string} str1 - The first string.
203af6ab5fSopenharmony_ci     * @param {string} str2 - The second string.
213af6ab5fSopenharmony_ci     * @returns {string} The concatenated string.
223af6ab5fSopenharmony_ci     */
233af6ab5fSopenharmony_ci    concatenateStrings(str1: string, str2: string): string;
243af6ab5fSopenharmony_ci    /**
253af6ab5fSopenharmony_ci     * A method to check if a number is even.
263af6ab5fSopenharmony_ci     * @param {number} num - The number to check.
273af6ab5fSopenharmony_ci     * @returns {boolean} True if the number is even, false otherwise.
283af6ab5fSopenharmony_ci     */
293af6ab5fSopenharmony_ci    isEven(num: number): boolean;
303af6ab5fSopenharmony_ci}
313af6ab5fSopenharmony_cideclare interface UserProfile {
323af6ab5fSopenharmony_ci    username: string;
333af6ab5fSopenharmony_ci    age: number;
343af6ab5fSopenharmony_ci}
353af6ab5fSopenharmony_cideclare function greetUser(user: UserProfile): string;
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