Error response with application/json body throws InvalidStateError

When I return a validation error message from my server as with content type application/json with status code 400 this throws the following error:

Uncaught InvalidStateError: Failed to read the 'responseText' property from 'XMLHttpRequest': The value is only accessible if the object's 'responseType' is '' or 'text' (was 'json').

on this line: https://github.com/mzabriskie/axios/blob/f9c46c5c1da731c150febd347708f229e9bc74ab/lib/adapters/xhr.js#L75. Apparently it’s not allowed to access the responseText property if the responseType does not match ‘’ or ‘text’.

You seem to be aware of this since you are checking exactly this a few lines earlier (https://github.com/mzabriskie/axios/blob/f9c46c5c1da731c150febd347708f229e9bc74ab/lib/adapters/xhr.js#L62).

I’d submit a pull request, but I’m not entirely sure what case is meant by the (request.responseText && xDomain) code…

[GerryFudd]

I just encountered the same problem.

(Edit: I redact my request to reopen this. I was seeing an error from another package that was reported in such a way that it looked like there was an issue with the way axios was handling api responses.)

[qtttttttttting]

I encounter similar problem @0.16.2. ajaxInject.js:1 Uncaught DOMException: Failed to read the ‘responseText’ property from ‘XMLHttpRequest’: The value is only accessible if the object’s ‘responseType’ is ‘’ or ‘text’ (was ‘blob’). Thank you for your help~