React, JS, Axios: Download blob file (PDF...)

handle-file-download-react-axios.js

import axios, { AxiosResponse } from 'axios';
import { get } from 'lodash-es';

const rest = axios.create({
  baseURL: 'some base URL goes here',
});

// this one send file as Blob type 
const getPdf = () => (
  rest.get(`/get-pdf`, {
    params: {
      cacheBustTimestamp: Date.now(), // prevents IE cache problems on re-download
    },
    responseType: 'blob',
    timeout: 120,
    headers: {
      Accept: 'application/octet-stream',
    },
  })
);

export const downloadFile = async (response/*: AxiosResponse*/, filename/*: string*/ = 'download') => {
  const data = get(response, 'payload.data', null) || getProp(response, 'data', null);
  if (!(data instanceof Blob)) return;

  const blob = new Blob([data], { type: 'application/pdf' });
  const link = document.createElement('a');
  link.href = window.URL.createObjectURL(blob);
  link.download = `${filename}-${+new Date()}.pdf`;
  link.click();
  window.URL.revokeObjectURL(link.href);
};

export const openFileInNewTab = async (response/*: AxiosResponse*/, filename/*: string*/ = 'download') => {
  const data = getProp(response, 'payload.data', null) || getProp(response, 'data', null);
  if (!(data instanceof Blob)) return;

  const blob = new Blob([data], { type: 'application/pdf' });

  // IE
  if (window.navigator && window.navigator.msSaveOrOpenBlob) {
    window.navigator.msSaveOrOpenBlob(data, filename);
    return;
  }

  // Chrome, FF
  const fileUrl = URL.createObjectURL(blob);
  const w = window.open(fileUrl, '_blank');
  w && w.focus();

  // if you want to support Safari & Opera iOS version
  // if (navigator.userAgent.indexOf('Chrome') != -1 || navigator.userAgent.indexOf('Firefox') != -1) {
  //   const w = window.open(fileUrl, '_blank');
  //   w && w.focus();
  // } else {
  //   // Safari & Opera iOS
  //   window.location.href = fileUrl;
  // }
};

where getProp plz, I am using react native

nice incorporation