axios: Default Authorization header no longer working in 0.19.0

axios global defaults (axios.defaults.headers) seem to no longer affect prevoiusly-created axios client instances. Is this an intended change?

Example: 0.18 - header is sent https://codesandbox.io/s/axios018-8fg9d 0.19 - header is not sent https://codesandbox.io/s/axios019-5ddn8

@glebtv this seems to in fact be intended. The documentation might need a bit of adjustment for this, I will have a look at it, however, it seems you may need to implement this:

instance.defaults.headers.common['Authorization'] = AUTH_TOKEN;

This will change the instance defaults rather than the global default. This makes sense, especially in this example.

@vserpokryl I think I made a mistake when I explained the problem.

I set default headers AFTER adapter creation…

I cannot know Bearer when application is loaded and token is refreshed regularly so it is mandatory to put it after

It works for me (Node.JS v10.14.2)

const axios = require('axios');
const { version } = require('axios/package');

console.log(`Axios version: ${version}`);

axios.defaults.headers.common['Authorization'] = 'Bearer test';

axios.get('https://api.ipify.org?format=json')
  .then(({ data, config }) => {
    console.log({
      data,
      headers: config.headers,
    });
  });

axios.get('http://api.ipify.org?format=json')
  .then(({ data, config }) => {
    console.log({
      data,
      headers: config.headers,
    });
  });

Result:

Axios version: 0.19.0

{ data: { ip: '91.201.71.191' },
  headers:
   { Accept: 'application/json, text/plain, */*',
     Authorization: 'Bearer test',
     'User-Agent': 'axios/0.19.0' } }

{ data: { ip: '91.201.71.191' },
  headers:
   { Accept: 'application/json, text/plain, */*',
     Authorization: 'Bearer test',
     'User-Agent': 'axios/0.19.0' } }

Same issue not working for me also after updating to 0.19.0

This seems to be intended - https://github.com/axios/axios/pull/1395