utils dataUrlToFile.ts

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  export const dataURLtoFile = (dataUrl: string, filename: string) => {
  const arr = dataUrl.split(',');
  const mimeType = arr[0].match(/:(.*?);/)?.[1];
  const decodedData = atob(arr[1]);
  let lengthOfDecodedData = decodedData.length;
  const u8array = new Uint8Array(lengthOfDecodedData);
  while (lengthOfDecodedData > -1) {
    u8array[lengthOfDecodedData] = decodedData.charCodeAt(lengthOfDecodedData);
    lengthOfDecodedData -= 1;
  }
  return new File([u8array], filename, { type: mimeType });
};