Creating download link that contains various ASCII codes (created by TypedArray)

index.js

function typedArrayToURL(typedArr, mimeType) {
  return URL.createObjectURL(new Blob([typedArr.buffer], {type: mimeType}));
}

const bytes = new  Uint8Array(59);
for(let i = 0; i < 59; i++) {
  bytes[i] = 32 + i;
}

const url = typedArrayToURL(bytes, 'application/octet-binary');
        
const a = document.createElement('a');
a.href = url;
a.textContent = 'Download file';

document.body.appendChild(a);