utils b64toBlob.js

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  /* Enabled JPEG images downloading on IE11. */
const b64toBlob = (b64Data, contentType = '', sliceSize = 512) => {
  const byteCharacters = atob(b64Data);
  const byteArrays = [];
 
  for (let offset = 0; offset < byteCharacters.length; offset += sliceSize) {
    const slice = byteCharacters.slice(offset, offset + sliceSize);
 
    const byteNumbers = new Array(slice.length);
    for (let i = 0; i < slice.length; i++) {
      byteNumbers[i] = slice.charCodeAt(i);
    }
 
    const byteArray = new Uint8Array(byteNumbers);
    byteArrays.push(byteArray);
  }
 
  const blob = new Blob(byteArrays, { type: contentType });
  return blob;
};
 
export default b64toBlob;