Don't throw error / catch on 400-level responses

Instead, limit the error/catch to 500-level errors. 400-level responses can be completely valid, expected, desired, etc.

I have been following this pattern with my bunyan logging – logging 400-level responses as warnings, and 500-level responses as errors. The idea is that a successful npm test (which may expect 400-level responses) should show zero logging errors.

[mzabriskie]

This has been added as a feature in 0.11.0 by use of validateStatus config option.

[jonathanpmartins]

@carlojacobs you can access error.response.data

axios.post('/').then(response => {
    console.log(response.data);
}).catch(error => {
    console.log(error.response.data);
});