Object blob ошибка

// Here is a hack, works well for me.
// You can put it into `transformResponse`, etc as well.
import fileDownload from 'js-file-download'

opts.responseType = 'blob' // <--- force blob at the beginning, anyway

res = await axios(opts)

let resBlob = res.data // <--- store the blob if it is
let resData = null

try {
  let resText = await new Promise((resolve, reject) => {
    let reader = new FileReader()
    reader.addEventListener('abort', reject)
    reader.addEventListener('error', reject)
    reader.addEventListener('loadend', () => {
      resolve(reader.result)
    })
    reader.readAsText(resBlob)
  })
  resData = JSON.parse(resText) // <--- try to parse as json evantually
} catch (err) {
  // ignore
}

// Now you have `resData` and `resBlob` at the same time.
// `resData` would be the normal data object,
// or the error object if `resBlob` is expected.

if (resData) {
  if (resData.error) {
    // handle error
  } else {
    // handle data
  }
} else {
  // handle blob
  fileDownload(resBlob, filename)
}

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const service = axios.create();

service.interceptors.response.use(
    response => {
        if (!/json$/gi.test(response.headers['content-type'])) {
            /** not json, like binary string */
            return response.data;
        }

        if (response.request.responseType === 'arraybuffer'
            && response.data.toString() === '[object ArrayBuffer]'
        ) {
            /** error response */
            const res = JSON.parse(Buffer.from(response.data).toString('utf8'));
        }
        
        /** handle res according to the JSON object */
        /** ... */
    },
    error => {/** handle error response status */}
);

const downloader = require('js-file-download');
server.post(url, params, {
    responseType: 'arraybuffer',
}).then(data => {
    downloader(data, 'xxx.csv');    
});

let axios = ...instantiate...;
axios.interceptors.response.use(
           response => { return response; },
           error => {
               if (
                 error.request.responseType === 'blob' &&
                 error.response.data instanceof Blob &&
                 error.response.data.type &&
                 error.response.data.type.toLowerCase().indexOf('json') != -1
               )
               {
                 return new Promise((resolve, reject) => {
                    let reader = new FileReader();
                    reader.onload = () => {
                        error.response.data = JSON.parse(reader.result);
                        resolve(Promise.reject(error));
                    };

                    reader.onerror = () => {
                        reject(error);
                    };

                    reader.readAsText(error.response.data);
                 });
               };

               return Promise.reject(error);
           }
       );

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