javascript - axios 请求拦截器错误处理程序中错误对象的形状是什么？

Question

技术说明: 由于 axios 针对 Node 和浏览器使用不同的库/机制，因此此问题仅涉及 Node.js axios@0.18 的用法.0.

我可以为 axios 库 ( https://github.com/axios/axios#interceptors ) 设置以下拦截器:

// Add a request interceptor
axios.interceptors.request.use(function (config) {
    // Do something before request is sent
    return config;
  }, function (error) {
    // Do something with request error
    //
    // I am asking about this error handler and this error object
    //
    return Promise.reject(error);
  });

// Add a response interceptor
axios.interceptors.response.use(function (response) {
    // Do something with response data
    return response;
  }, function (error) {
    // Do something with response error
    return Promise.reject(error);
  });

当请求拦截器的错误处理程序中描述的回调被触发时，该错误对象的形状是什么？

P.S. 我看到有 this code describing work with errors在 axios 中:

axios.get('/user/12345')
  .catch(function (error) {
    if (error.response) {
      // The request was made and the server responded with a status code
      // that falls out of the range of 2xx
      console.log(error.response.data);
      console.log(error.response.status);
      console.log(error.response.headers);
    } else if (error.request) {
      //
      //
      //  !!!! This is a request error handler !!!
      //
      //
      // The request was made but no response was received
      // `error.request` is an instance of XMLHttpRequest in the browser and an instance of
      // http.ClientRequest in node.js
      console.log(error.request);
    } else {
      // Something happened in setting up the request that triggered an Error
      console.log('Error', error.message);
    }
    console.log(error.config);
  });

request error handler中的error在后面的代码中代表什么？

Answer 1

我认为此源代码可能对您有所帮助:

createError.js

它看起来像 Error 的一个实例, 所以它有error.message, axios 增加了error.config, error.code, error.request 和 error.response，根据 enhanceError.js .