// How big something is, in words a person reads at a glance.

const UNITS = { MB: 1024 ** 2, GB: 1024 ** 3 } as const;

/**
 * `bytes` in `unit`, with one decimal below 10 and none above. Sizes sit in lists
 * where a 2.7 MB package and a 95 MB AppImage are compared, and "3 MB" next to
 * "95 MB" loses the only distinction that matters at the small end.
 */
export function roughSize(bytes: number, unit: keyof typeof UNITS): string {
  const n = bytes / UNITS[unit];
  return `${n < 10 ? n.toFixed(1) : n.toFixed(0)} ${unit}`;
}