Upgrade Guide

0.12.x -> 0.13.0

The 0.13.0 release contains several changes to custom adapters and error handling.

Error Handling

Previous to this release an error could either be a server response with bad status code or an actual Error. With this release Promise will always reject with an Error. In the case that a response was received, the Error will also include the response.

axios.get('/user/12345')
  .catch((error) => {
    console.log(error.message);
    console.log(error.code); // Not always specified
    console.log(error.config); // The config that was used to make the request
    console.log(error.response); // Only available if response was received from the server
  });

Request Adapters

This release changes a few things about how request adapters work. Please take note if you are using your own custom adapter.

Response transformer is now called outside of adapter.
Request adapter returns a Promise.

This means that you no longer need to invoke transformData on response data. You will also no longer receive resolve and reject as arguments in your adapter.

Previous code:

function myAdapter(resolve, reject, config) {
  var response = {
    data: transformData(
      responseData,
      responseHeaders,
      config.transformResponse
    ),
    status: request.status,
    statusText: request.statusText,
    headers: responseHeaders
  };
  settle(resolve, reject, response);
}

New code:

function myAdapter(config) {
  return new Promise(function (resolve, reject) {
    var response = {
      data: responseData,
      status: request.status,
      statusText: request.statusText,
      headers: responseHeaders
    };
    settle(resolve, reject, response);
  });
}

See the related commits for more details:

0.5.x -> 0.6.0

The 0.6.0 release contains mostly bug fixes, but there are a couple things to be aware of when upgrading.

ES6 Promise Polyfill

Up until the 0.6.0 release ES6 Promise was being polyfilled using es6-promise. With this release, the polyfill has been removed, and you will need to supply it yourself if your environment needs it.

require('es6-promise').polyfill();
var axios = require('axios');

This will polyfill the global environment, and only needs to be done once.

`axios.success`/`axios.error`

The success, and error aliases were deprectated in 0.4.0. As of this release they have been removed entirely. Instead please use axios.then, and axios.catch respectively.

axios.get('some/url')
  .then(function (res) {
    /* ... */
  })
  .catch(function (err) {
    /* ... */
  });

UMD

Previous versions of axios shipped with an AMD, CommonJS, and Global build. This has all been rolled into a single UMD build.

// AMD
require(['bower_components/axios/dist/axios'], function (axios) {
  /* ... */
});

// CommonJS
var axios = require('axios/dist/axios');

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