//base64转Blob
export function  base64ToBlob(base64, type) {
    console.log(base64);
  const bstr = atob(base64.replace(/^[^,]+,/, ''))
  let n = bstr.length
  const u8arr = new Uint8Array(n)
  while (n--) {
    u8arr[n] = bstr.charCodeAt(n)
  }
  // return new Blob([u8arr], { type: type || '' })
  return new Blob([u8arr], { type: type || 'image/jpeg' })
}