Not the correct url value

[long-woo]

Describe the bug

After upgrading to 0.19.0, the url obtained in the request interceptor is missing baseURL. When I dropped to 0.16.1, the result was correct.

To Reproduce

Axios.defaults.baseURL = '/api'
Axios.interceptors.request.use(
  config => {
    console.log('config', config)
    console.log('config.url', config.url)

    return config
  },
  error => {
    Vue.nprogress.done()

    return error
  }
)

Expected behavior

Return correctly, bring baseURL.

Environment:

• Axios Version [0.19.0]
• OS: [OSX 10.13.4]
• Browser [Chrome]
• Browser Version [76]

Additional context/Screenshots

[Lenny-Hu]

我使用的v0.19.0也是这种情况，我在拦截器内基于url做了一些操作，发现config.url并不是以axios.defaults.baseURL开头的

[Alanscut]

This breaking changes due to PR #950 which fixed issue #949.
This commit is used to make the baseURL that rewriting in the interceptor take effect, and the full url should be merged during the request. So config.url must be a relative path in interceptor, otherwise we can‘t build the correct full url.

But I don't think this change will affect the operation you want to do, in interceptor, the full url you wanted is config.baseURL + config.url, so you can do whatever you want on the full url by manipulating the config.url and config.baseURL.

[Alanscut]

config.url without baseURL could avoid repeatedly adding baseURL to the front of requestURL when retry the request. Detailed description: #1628, #2391