1/* 2 * Copyright (c) 2025 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 16export type AsyncCallback<T> = (err: T, data: T) => void; 17 18function getBundleInfo(userId?: number):void {} 19function getBundleInfo(callback: AsyncCallback<number>): void { 20 callback(666, 66); 21} 22 23getBundleInfo((err, data) => { 24 assertEQ(err, 666); 25 assertEQ(data, 66) 26}); 27