generate Checksum (Sha256) from a blob or a file (vanillajs)

getChecksumSha256.ts

async function getChecksumSha256(blob: Blob): Promise<string> {
  const uint8Array = new Uint8Array(await blob.arrayBuffer());
  const hashBuffer = await crypto.subtle.digest('SHA-256', uint8Array);
  const hashArray = Array.from(new Uint8Array(hashBuffer));

  return hashArray.map((h) => h.toString(16).padStart(2, '0')).join('');
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}