// Saves a downloaded file. Works on mobile browsers too: the link must be in the document and the
// object URL alive until the click ran.
export function saveBlob(blob: Blob, filename: string): void {
  const url = URL.createObjectURL(blob);
  const a = document.createElement('a');
  a.href = url;
  a.download = filename;
  document.body.appendChild(a);
  a.click();
  a.remove();
  window.setTimeout(() => URL.revokeObjectURL(url), 10000);
}

export const formatBytes = (n: number): string =>
  n < 1024 ? `${n} B` : n < 1024 * 1024 ? `${(n / 1024).toFixed(0)} KB` : `${(n / 1024 / 1024).toFixed(1)} MB`;