export const convert = (data: any) => {
  const block = data.split(';')
  const contentType = block[0].split(':')[1]
  const realData = block[1].split(',')[1]
  return b64toBlob(realData, contentType, '')
}

function b64toBlob(b64Data: any, contentType: any, sliceSize: any) {
  contentType = contentType || ''
  sliceSize = 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)
  }
  return new Blob(byteArrays, { type: contentType })
}