datauri-to-blob.ts

export default (dataURI: string): Blob => {
  const byteString = dataURI.split(',')[0].indexOf('base64') >= 0
    ? atob(dataURI.split(',')[1])
    : decodeURIComponent(dataURI.split(',')[1]);
  const mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];
  const ia = new Uint8Array(byteString.length);
  for (let i = 0; i < byteString.length; i++) {
    ia[i] = byteString.charCodeAt(i);
  }

  return new Blob([ia], { type: mimeString });
};