Unified error handling

描述

贡献者指南

技术栈

javascriptnodejsexpress

领域

backendapi

议题类型

refactor

难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。

3

预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。

1-3 hours

活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。

stale

清晰度议题是否清楚说明期望改动、验收标准和下一步。

clear

前置要求

Basic knowledge of ExpressJavaScript

新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。

70

研究方向

The issue requests implementing centralized error handling using Express error middleware and the `.catch(next)` pattern. Relevant files are the Express server setup (likely `server.js` or `app.js`) and any existing route handlers. First, create a custom error class and an error handling middleware with signature `(err, req, res, next)`. Then, modify route handlers to use `catch(next)` to forward errors. Refer to Express error handling documentation for details. Since the issue is from 2015 and the project may be outdated, check if the current codebase still uses Express and if there are any existing error handling approaches.