Node.js 如何正确抛出错误？答案

【问题标题】：Node.js how to throw errors properly?Node.js 如何正确抛出错误？
【发布时间】：2019-01-03 09:47:30
【问题描述】：

给定的选项是好的做法还是需要改进？如果是这样，你能告诉我怎么做吗？

// Situation 1 - developer error
error: {
  name: "Unauthorized",
  message: "Authentication token was not found / incorrect",
  code: "401"
}

// Situation 2 - user's faults
error: {
  name: "Bad Request",
  message: {
    first_name: "Please fill first name 2-10 chars long",
    last_name: "Last name is not allowed to contain digits - letters only"
  },
  code: "400"
}

// Situation 3 - everything is okay.
data: {
  user: {
    first_name: "John",
    last_name: "Doe"
  },
  code: "200"
}

基本上我想返回多个错误或描述性错误，但new Error("error") 类仅针对一个错误。

我应该如何正确地做到这一点？

【问题讨论】：

标签： node.js rest api error-handling

【解决方案1】：

您可以使用以下标准进行 REST API 响应。

**Success Response:**
    {
     "code": 200,
     "success": true,
     "data": {},
     "message": "Vendor created successfully."
    }

**Internal Server Error Response:**
        {
           code: 500,
            success: false,
            message: "Internal Server Error",
            error: err
        }

**Process Error Response:**

        {
            success: false,
            message: msg,
            data:{},
            code: 409,
            process_code: process_code
        };

**Fields Validation Error Response:**

       {
            errors: errors,
            code: 400,
            success: false,
            message: "Fields validation failed."
        }


**404 Resource Not Found Response:**

{
    "code": 404,
    "success": false,
    "message": "Resource Not Found.",
    "error":err
}

【讨论】：