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 16/** 17 * Defines the basic callback. 18 * @since 6 19 */ 20export interface Callback<T> { 21 /** 22 * Defines the callback info. 23 * @since 6 24 */ 25 (data: T): void; 26} 27 28/** 29 * Defines the basic error callback. 30 * @since 6 31 */ 32export interface ErrorCallback<T extends Error = BusinessError> { 33 /** 34 * Defines the basic error callback. 35 * @since 6 36 */ 37 (err: T): void; 38} 39 40/** 41 * Defines the basic async callback. 42 * @since 6 43 */ 44export interface AsyncCallback<T, E = void> { 45 /** 46 * Defines the callback data. 47 * @since 6 48 */ 49 (err: BusinessError<E>, data: T): void; 50} 51 52/** 53 * Defines the error interface. 54 * @since 6 55 */ 56export interface BusinessError<T = void> extends Error { 57 /** 58 * Defines the basic error code. 59 * @since 6 60 */ 61 code: number; 62 /** 63 * Defines the additional information for business 64 * @type { ?T } 65 * @since 9 66 */ 67 data?: T; 68} 69