export default function dataURItoBlob(dataURI, opts, toFile) {
  // get the base64 data
  var data = dataURI.split(',')[1];

  // user may provide mime type, if not get it from data URI
  var mimeType = opts.mimeType || dataURI.split(',')[0].split(':')[1].split(';')[0];

  // default to plain/text if data URI has no mimeType
  if (mimeType == null) {
    mimeType = 'plain/text';
  }
  var binary = atob(data);
  var array = [];
  for (var i = 0; i < binary.length; i++) {
    array.push(binary.charCodeAt(i));
  }
  var bytes;
  try {
    bytes = new Uint8Array(array); // eslint-disable-line compat/compat
  } catch (err) {
    return null;
  }

  // Convert to a File?
  if (toFile) {
    return new File([bytes], opts.name || '', {
      type: mimeType
    });
  }
  return new Blob([bytes], {
    type: mimeType
  });
}