1/* 2* Copyright (C) 2021 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 interface AsyncCallback<T> { 17 (err: BusinessError, data: T): void; 18 } 19 20 export interface ErrorCallback<T extends Error> { 21 (err: T): void; 22 } 23 24 export interface Callback<T> { 25 (data: T): void; 26 } 27 28 export interface BusinessError extends Error { 29 code: string; 30 }