Converts bytes into a human-readable file size format.
Contributed by @itsbrunodev
function formatFileSize(bytes, decimalPlaces = 2) {
if (bytes === 0) return "0 B";
const k = 1024;
const sizes = ["B", "KB", "MB", "GB", "TB"];
const i = Math.floor(Math.log(bytes) / Math.log(k));
return `${(bytes / Math.pow(k, i)).toFixed(decimalPlaces)} ${sizes[i]}`;
}formatFileSize(1024); // "1.00 KB"
formatFileSize(1048576); // "1.00 MB"